919 files changed, 163114 insertions, 555 deletions

diff --git a/lib/libc/Makefile b/lib/libc/Makefile
new file mode 100644
index 0000000..c52d671
--- /dev/null
+++ b/lib/libc/Makefile
@@ -0,0 +1,64 @@
+#	@(#)Makefile	8.2 (Berkeley) 2/3/94
+#
+# All library objects contain rcsid strings by default; they may be
+# excluded as a space-saving measure.  To produce a library that does
+# not contain these strings, delete -DLIBC_RCS and -DSYSLIBC_RCS
+# from CFLAGS below.  To remove these strings from just the system call
+# stubs, remove just -DSYSLIBC_RCS from CFLAGS.
+LIB=c
+SHLIB_MAJOR= 2
+SHLIB_MINOR= 2
+CFLAGS+=-DLIBC_RCS -DSYSLIBC_RCS
+AINC=	-I${.CURDIR}/${MACHINE}
+CLEANFILES+=tags
+INSTALL_PIC_ARCHIVE=	yes
+PRECIOUSLIB=	yes
+
+.include "${.CURDIR}/db/Makefile.inc"
+.include "${.CURDIR}/compat-43/Makefile.inc"
+.include "${.CURDIR}/gen/Makefile.inc"
+.include "${.CURDIR}/gmon/Makefile.inc"
+.include "${.CURDIR}/locale/Makefile.inc"
+.include "${.CURDIR}/net/Makefile.inc"
+.include "${.CURDIR}/nls/Makefile.inc"
+.include "${.CURDIR}/quad/Makefile.inc"
+.include "${.CURDIR}/regex/Makefile.inc"
+.include "${.CURDIR}/stdio/Makefile.inc"
+.include "${.CURDIR}/stdlib/Makefile.inc"
+.include "${.CURDIR}/stdtime/Makefile.inc"
+.include "${.CURDIR}/string/Makefile.inc"
+.include "${.CURDIR}/sys/Makefile.inc"
+.include "${.CURDIR}/rpc/Makefile.inc"
+.include "${.CURDIR}/xdr/Makefile.inc"
+.if !defined(NO_YP_LIBC)
+CFLAGS+= -DYP
+.include "${.CURDIR}/yp/Makefile.inc"
+.endif
+.include "${.CURDIR}/${MACHINE}/sys/Makefile.inc"
+
+KQSRCS=	adddi3.c anddi3.c ashldi3.c ashrdi3.c cmpdi2.c divdi3.c iordi3.c \
+	lshldi3.c lshrdi3.c moddi3.c muldi3.c negdi2.c notdi2.c qdivrem.c \
+	subdi3.c ucmpdi2.c udivdi3.c umoddi3.c xordi3.c
+KSRCS=	bcmp.c ffs.c index.c mcount.c rindex.c strcat.c strcmp.c strcpy.c \
+	strlen.c strncpy.c
+
+libkern: libkern.gen libkern.${MACHINE}
+
+libkern.gen: ${KQSRCS} ${KSRCS}
+	cp -p ${.CURDIR}/quad/quad.h ${.ALLSRC} /sys/libkern
+
+libkern.${MACHINE}:: ${KMSRCS}
+.if defined(KMSRCS) && !empty(KMSRCS)
+	cp -p ${.ALLSRC} /sys/libkern/${MACHINE}
+.endif
+
+#beforeinstall: tags
+#	${INSTALL} ${COPY} -o bin -g bin -m 444 tags /var/db/libc.tags
+
+tags: ${SRCS}
+	ctags ${.ALLSRC:M*.c}
+	egrep -o "^ENTRY(.*)|^FUNC(.*)|^SYSCALL(.*)" ${.ALLSRC:M*.s} | \
+	    sed "s;\([^:]*\):\([^(]*\)(\([^, )]*\)\(.*\);\3 \1 /^\2(\3\4$$/;" \
+	    >> tags; sort -o tags tags
+
+.include <bsd.lib.mk>
diff --git a/lib/libc/amd64/SYS.h b/lib/libc/amd64/SYS.h
new file mode 100644
index 0000000..53837ab
--- /dev/null
+++ b/lib/libc/amd64/SYS.h
@@ -0,0 +1,73 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	from: @(#)SYS.h	5.5 (Berkeley) 5/7/91
+ *
+ *	$Id: SYS.h,v 1.3 1993/11/04 00:01:17 paul Exp $
+ */
+
+#include <sys/syscall.h>
+#include "DEFS.h"
+
+#ifdef PIC
+#define PIC_PROLOGUE    \
+        pushl   %ebx;   \
+        call    1f;     \
+1:                      \
+        popl    %ebx;   \
+        addl    $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
+#define PIC_EPILOGUE    \
+        popl    %ebx
+#define PIC_PLT(x)      x@PLT
+#define PIC_GOT(x)      x@GOT(%ebx)
+#define PIC_GOTOFF(x)   x@GOTOFF(%ebx)
+#else
+#define PIC_PROLOGUE
+#define PIC_EPILOGUE
+#define PIC_PLT(x)      x
+#define PIC_GOT(x)      x
+#define PIC_GOTOFF(x)   x
+#endif
+
+#define	SYSCALL(x)	2: jmp cerror; ENTRY(x); lea SYS_/**/x,%eax; LCALL(7,0); jb 2b
+#define	RSYSCALL(x)	SYSCALL(x); ret
+#define	PSEUDO(x,y)	ENTRY(x); lea SYS_/**/y, %eax; ; LCALL(7,0); ret
+#define	CALL(x,y)	call _/**/y; addl $4*x,%esp
+/* gas fucks up offset -- although we don't currently need it, do for BCS */
+#define	LCALL(x,y)	.byte 0x9a ; .long y; .word x
+
+#define	ASMSTR		.asciz
+
+	.globl	cerror
diff --git a/lib/libc/amd64/gen/Makefile.inc b/lib/libc/amd64/gen/Makefile.inc
new file mode 100644
index 0000000..387aebf
--- /dev/null
+++ b/lib/libc/amd64/gen/Makefile.inc
@@ -0,0 +1,5 @@
+#	@(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+#	$Id: Makefile.inc,v 1.5 1995/01/23 01:26:39 davidg Exp $
+
+SRCS+=	isinf.c infinity.c
+SRCS+=	_setjmp.S alloca.S fabs.S ldexp.c modf.S setjmp.S sigsetjmp.S
diff --git a/lib/libc/amd64/gen/_setjmp.S b/lib/libc/amd64/gen/_setjmp.S
new file mode 100644
index 0000000..abd2684
--- /dev/null
+++ b/lib/libc/amd64/gen/_setjmp.S
@@ -0,0 +1,84 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+/*
+ * C library -- _setjmp, _longjmp
+ *
+ *	_longjmp(a,v)
+ * will generate a "return(v)" from the last call to
+ *	_setjmp(a)
+ * by restoring registers from the environment 'a'.
+ * The previous signal state is NOT restored.
+ */
+
+#include "DEFS.h"
+
+ENTRY(_setjmp)
+	movl	4(%esp),%eax
+	movl	0(%esp),%edx
+	movl	%edx, 0(%eax)		/* rta */
+	movl	%ebx, 4(%eax)
+	movl	%esp, 8(%eax)
+	movl	%ebp,12(%eax)
+	movl	%esi,16(%eax)
+	movl	%edi,20(%eax)
+	fnstcw	28(%eax)
+	xorl	%eax,%eax
+	ret
+
+ENTRY(_longjmp)
+	movl	4(%esp),%edx
+	movl	8(%esp),%eax
+	movl	0(%edx),%ecx
+	movl	4(%edx),%ebx
+	movl	8(%edx),%esp
+	movl	12(%edx),%ebp
+	movl	16(%edx),%esi
+	movl	20(%edx),%edi
+	fninit
+	fldcw	28(%edx)
+	testl	%eax,%eax
+	jnz	1f
+	incl	%eax
+1:	movl	%ecx,0(%esp)
+	ret
diff --git a/lib/libc/amd64/gen/frexp.c b/lib/libc/amd64/gen/frexp.c
new file mode 100644
index 0000000..aba4802
--- /dev/null
+++ b/lib/libc/amd64/gen/frexp.c
@@ -0,0 +1,67 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+static const char rcsid[] = "$Id$";
+#endif /* LIBC_RCS and not lint */
+
+#include <sys/types.h>
+#include <math.h>
+
+double
+frexp(value, eptr)
+	double value;
+	int *eptr;
+{
+	union {
+                double v;
+                struct {
+			u_int u_mant2 : 32;
+			u_int u_mant1 : 20;
+			u_int   u_exp : 11;
+                        u_int  u_sign :  1;
+                } s;
+        } u;
+
+	if (value) {
+		u.v = value;
+		*eptr = u.s.u_exp - 1022;
+		u.s.u_exp = 1022;
+		return(u.v);
+	} else {
+		*eptr = 0;
+		return((double)0);
+	}
+}
diff --git a/lib/libc/amd64/gen/infinity.c b/lib/libc/amd64/gen/infinity.c
new file mode 100644
index 0000000..e46f676
--- /dev/null
+++ b/lib/libc/amd64/gen/infinity.c
@@ -0,0 +1,9 @@
+/*
+ * infinity.c
+ *	$Id$
+ */
+
+#include <math.h>
+
+/* bytes for +Infinity on a 387 */
+char __infinity[] = { 0, 0, 0, 0, 0, 0, 0xf0, 0x7f };
diff --git a/lib/libc/amd64/gen/isinf.c b/lib/libc/amd64/gen/isinf.c
new file mode 100644
index 0000000..c328449
--- /dev/null
+++ b/lib/libc/amd64/gen/isinf.c
@@ -0,0 +1,66 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+static const char rcsid[] = "$Id$";
+#endif /* LIBC_RCS and not lint */
+
+#include <sys/types.h>
+
+isnan(d)
+	double d;
+{
+	register struct IEEEdp {
+		u_int manl : 32;
+		u_int manh : 20;
+		u_int  exp : 11;
+		u_int sign :  1;
+	} *p = (struct IEEEdp *)&d;
+
+	return(p->exp == 2047 && (p->manh || p->manl));
+}
+
+isinf(d)
+	double d;
+{
+	register struct IEEEdp {
+		u_int manl : 32;
+		u_int manh : 20;
+		u_int  exp : 11;
+		u_int sign :  1;
+	} *p = (struct IEEEdp *)&d;
+
+	return(p->exp == 2047 && !p->manh && !p->manl);
+}
diff --git a/lib/libc/amd64/gen/ldexp.c b/lib/libc/amd64/gen/ldexp.c
new file mode 100644
index 0000000..8b63f52
--- /dev/null
+++ b/lib/libc/amd64/gen/ldexp.c
@@ -0,0 +1,74 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Sean Eric Fagan.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+static const char rcsid[] = "$Id$";
+#endif /* LIBC_RCS and not lint */
+
+/*
+ * ldexp(value, exp): return value * (2 ** exp).
+ *
+ * Written by Sean Eric Fagan (sef@kithrup.COM)
+ * Sun Mar 11 20:27:09 PST 1990
+ */
+
+/*
+ * We do the conversion in C to let gcc optimize it away, if possible.
+ * The "fxch ; fstp" stuff is because value is still on the stack
+ * (stupid 8087!).
+ */
+double
+ldexp (double value, int exp)
+{
+	double temp, texp, temp2;
+	texp = exp;
+#ifdef __GNUC__
+#if    __GNUC__ >= 2
+	asm ("fscale "
+		: "=u" (temp2), "=t" (temp)
+		: "0" (texp), "1" (value));
+#else
+	asm ("fscale ; fxch %%st(1) ; fstp%L1 %1 "
+		: "=f" (temp), "=0" (temp2)
+		: "0" (texp), "f" (value));
+#endif
+#else
+error unknown asm
+#endif
+	return (temp);
+}
diff --git a/lib/libc/amd64/gen/setjmp.S b/lib/libc/amd64/gen/setjmp.S
new file mode 100644
index 0000000..fa52b83
--- /dev/null
+++ b/lib/libc/amd64/gen/setjmp.S
@@ -0,0 +1,93 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+/*
+ * C library -- _setjmp, _longjmp
+ *
+ *	longjmp(a,v)
+ * will generate a "return(v)" from the last call to
+ *	setjmp(a)
+ * by restoring registers from the environment 'a'.
+ * The previous signal state is restored.
+ */
+
+#include "DEFS.h"
+#include "SYS.h"
+
+ENTRY(setjmp)
+	pushl	$0
+	call	PIC_PLT(_sigblock)
+	popl	%edx
+	movl	4(%esp),%ecx 
+	movl	0(%esp),%edx
+	movl	%edx, 0(%ecx)
+	movl	%ebx, 4(%ecx)
+	movl	%esp, 8(%ecx)
+	movl	%ebp,12(%ecx)
+	movl	%esi,16(%ecx)
+	movl	%edi,20(%ecx)
+	movl	%eax,24(%ecx)
+	fnstcw	28(%ecx)
+	xorl	%eax,%eax
+	ret
+
+ENTRY(longjmp)
+	movl	4(%esp),%edx
+	pushl	24(%edx)
+	call	PIC_PLT(_sigsetmask)	/* XXX this is not reentrant */
+	popl	%eax
+	movl	4(%esp),%edx
+	movl	8(%esp),%eax
+	movl	0(%edx),%ecx
+	movl	4(%edx),%ebx
+	movl	8(%edx),%esp
+	movl	12(%edx),%ebp
+	movl	16(%edx),%esi
+	movl	20(%edx),%edi
+	fninit
+	fldcw	28(%edx)
+	testl	%eax,%eax
+	jnz	1f
+	incl	%eax
+1:	movl	%ecx,0(%esp)
+	ret
diff --git a/lib/libc/amd64/gen/sigsetjmp.S b/lib/libc/amd64/gen/sigsetjmp.S
new file mode 100644
index 0000000..4f592a3
--- /dev/null
+++ b/lib/libc/amd64/gen/sigsetjmp.S
@@ -0,0 +1,105 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: sigsetjmp.S,v 1.3 1994/12/27 13:34:04 bde Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id: sigsetjmp.S,v 1.3 1994/12/27 13:34:04 bde Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+#include "SYS.h"
+
+/*-
+ * TODO:
+ *	Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp,
+ *	remove the other *jmp functions and define everything in terms
+ *	of the renamed functions.  This requires compiler support for
+ *	the renamed functions (introduced in gcc-2.5.3; previous versions
+ *	only supported *jmp with 0 or 1 leading underscores).
+ *
+ *	Use sigprocmask() instead of sigblock() and sigsetmask(), and
+ *	check for and handle errors.
+ *
+ *	Restore _all_ the registers and the signal mask atomically.  Can
+ *	use sigreturn() if sigreturn() works.
+ */
+
+ENTRY(sigsetjmp)
+	movl	8(%esp),%eax
+	movl	4(%esp),%ecx 
+	movl	%eax,32(%ecx)
+	testl	%eax,%eax
+	jz	1f
+	pushl	$0
+	call	PIC_PLT(_sigblock)
+	addl	$4,%esp
+	movl	4(%esp),%ecx 
+	movl	%eax,24(%ecx)
+1:	movl	0(%esp),%edx
+	movl	%edx, 0(%ecx)
+	movl	%ebx, 4(%ecx)
+	movl	%esp, 8(%ecx)
+	movl	%ebp,12(%ecx)
+	movl	%esi,16(%ecx)
+	movl	%edi,20(%ecx)
+	fnstcw	28(%ecx)
+	xorl	%eax,%eax
+	ret
+
+ENTRY(siglongjmp)
+	movl	4(%esp),%edx
+	cmpl	$0,32(%edx)
+	jz	1f
+	pushl	24(%edx)
+	call	PIC_PLT(_sigsetmask)
+	addl	$4,%esp
+1:	movl	4(%esp),%edx
+	movl	8(%esp),%eax
+	movl	0(%edx),%ecx
+	movl	4(%edx),%ebx
+	movl	8(%edx),%esp
+	movl	12(%edx),%ebp
+	movl	16(%edx),%esi
+	movl	20(%edx),%edi
+	fninit
+	fldcw	28(%edx)
+	testl	%eax,%eax
+	jnz	2f
+	incl	%eax
+2:	movl	%ecx,0(%esp)
+	ret
diff --git a/lib/libc/amd64/net/Makefile.inc b/lib/libc/amd64/net/Makefile.inc
new file mode 100644
index 0000000..dff7fd1
--- /dev/null
+++ b/lib/libc/amd64/net/Makefile.inc
@@ -0,0 +1,4 @@
+#	@(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+#	$Id$
+
+SRCS+=	htonl.S htons.S ntohl.S ntohs.S
diff --git a/lib/libc/amd64/net/htonl.S b/lib/libc/amd64/net/htonl.S
new file mode 100644
index 0000000..095c40a
--- /dev/null
+++ b/lib/libc/amd64/net/htonl.S
@@ -0,0 +1,53 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+/* netorder = htonl(hostorder) */
+
+#include "DEFS.h"
+
+ENTRY(htonl)
+	movl	4(%esp),%eax
+	xchgb	%al,%ah
+	roll	$16,%eax
+	xchgb	%al,%ah
+	ret
diff --git a/lib/libc/amd64/net/htons.S b/lib/libc/amd64/net/htons.S
new file mode 100644
index 0000000..238dfc2
--- /dev/null
+++ b/lib/libc/amd64/net/htons.S
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+/* netorder = htons(hostorder) */
+
+#include "DEFS.h"
+
+ENTRY(htons)
+	movzwl	4(%esp),%eax
+	xchgb	%al,%ah
+	ret
diff --git a/lib/libc/amd64/net/ntohl.S b/lib/libc/amd64/net/ntohl.S
new file mode 100644
index 0000000..5af5008
--- /dev/null
+++ b/lib/libc/amd64/net/ntohl.S
@@ -0,0 +1,53 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+/* hostorder = ntohl(netorder) */
+
+#include "DEFS.h"
+
+ENTRY(ntohl)
+	movl	4(%esp),%eax
+	xchgb	%al,%ah
+	roll	$16,%eax
+	xchgb	%al,%ah
+	ret
diff --git a/lib/libc/amd64/net/ntohs.S b/lib/libc/amd64/net/ntohs.S
new file mode 100644
index 0000000..4bed4a2
--- /dev/null
+++ b/lib/libc/amd64/net/ntohs.S
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+/* hostorder = ntohs(netorder) */
+
+#include "DEFS.h"
+
+ENTRY(ntohs)
+	movzwl	4(%esp),%eax
+	xchgb	%al,%ah
+	ret
diff --git a/lib/libc/amd64/sys/Makefile.inc b/lib/libc/amd64/sys/Makefile.inc
new file mode 100644
index 0000000..6774dd3
--- /dev/null
+++ b/lib/libc/amd64/sys/Makefile.inc
@@ -0,0 +1,10 @@
+#	from: Makefile.inc,v 1.1 1993/09/03 19:04:23 jtc Exp
+#	$Id$
+
+.PATH:	${.CURDIR}/${MACHINE}/sys
+
+SRCS+=	i386_get_ldt.c i386_set_ldt.c
+
+MAN2+=	i386/sys/i386_get_ldt.2
+
+MLINKS+=i386_get_ldt.2 i386_set_ldt.2
diff --git a/lib/libc/amd64/sys/brk.S b/lib/libc/amd64/sys/brk.S
new file mode 100644
index 0000000..c8311bb
--- /dev/null
+++ b/lib/libc/amd64/sys/brk.S
@@ -0,0 +1,92 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: brk.S,v 1.1 1994/08/05 01:18:39 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+#define	SYS_brk		17
+
+	.globl	curbrk
+	.globl	minbrk
+ENTRY(_brk)
+	jmp	ok
+
+ENTRY(brk)
+#ifdef PIC
+	movl	4(%esp),%eax
+	PIC_PROLOGUE
+	movl	PIC_GOT(curbrk),%edx	# set up GOT addressing
+	movl	PIC_GOT(minbrk),%ecx	#
+	cmpl	%eax,(%ecx)
+	PIC_EPILOGUE
+	jl	ok
+	movl	(%ecx),%eax
+	movl	%eax,4(%esp)
+ok:
+	lea	SYS_brk,%eax
+	LCALL(7,0)
+	jb	err
+	movl	4(%esp),%eax
+	movl	%eax,(%edx)
+	movl	$0,%eax
+	ret
+err:
+	jmp	PIC_PLT(cerror)
+
+#else
+
+	movl	4(%esp),%eax
+	cmpl	%eax,minbrk
+	jl	ok
+	movl	minbrk,%eax
+	movl	%eax,4(%esp)
+ok:
+	lea	SYS_brk,%eax
+	LCALL(7,0)
+	jb	err
+	movl	4(%esp),%eax
+	movl	%eax,curbrk
+	movl	$0,%eax
+	ret
+err:
+	jmp	cerror
+#endif
diff --git a/lib/libc/amd64/sys/cerror.S b/lib/libc/amd64/sys/cerror.S
new file mode 100644
index 0000000..875f6db
--- /dev/null
+++ b/lib/libc/amd64/sys/cerror.S
@@ -0,0 +1,58 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: cerror.S,v 1.2 1994/08/13 14:00:26 davidg Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+	.globl	_errno
+cerror:
+#ifdef PIC
+	PIC_PROLOGUE
+	movl	PIC_GOT(_errno),%ecx
+	movl	%eax,(%ecx)
+	PIC_EPILOGUE
+#else
+	movl	%eax,_errno
+#endif
+	movl	$-1,%eax
+	movl	$-1,%edx
+	ret
diff --git a/lib/libc/amd64/sys/exect.S b/lib/libc/amd64/sys/exect.S
new file mode 100644
index 0000000..74a055b
--- /dev/null
+++ b/lib/libc/amd64/sys/exect.S
@@ -0,0 +1,55 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: exect.S,v 1.1 1994/08/05 01:18:42 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+#include <machine/psl.h>
+
+ENTRY(exect)
+	lea	SYS_execve,%eax
+	pushf
+	popl	%edx
+	orl	$ PSL_T,%edx
+	pushl	%edx
+	popf
+	LCALL(7,0)
+	jmp	cerror		/* exect(file, argv, env); */
diff --git a/lib/libc/amd64/sys/pipe.S b/lib/libc/amd64/sys/pipe.S
new file mode 100644
index 0000000..cf3264c
--- /dev/null
+++ b/lib/libc/amd64/sys/pipe.S
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: pipe.S,v 1.1 1994/08/05 01:18:46 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+SYSCALL(pipe)
+	movl	4(%esp),%ecx
+	movl	%eax,(%ecx)
+	movl	%edx,4(%ecx)
+	movl	$0,%eax
+	ret
diff --git a/lib/libc/amd64/sys/ptrace.S b/lib/libc/amd64/sys/ptrace.S
new file mode 100644
index 0000000..e3ac3a5
--- /dev/null
+++ b/lib/libc/amd64/sys/ptrace.S
@@ -0,0 +1,61 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: ptrace.S,v 1.1 1994/08/05 01:18:47 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+ENTRY(ptrace)
+	xorl	%eax,%eax
+#ifdef PIC
+        PIC_PROLOGUE
+        movl    PIC_GOT(_errno),%edx
+        movl    %eax,(%edx)
+        PIC_EPILOGUE
+#else
+        movl    %eax,_errno
+#endif
+	lea	SYS_ptrace,%eax
+	LCALL(7,0)
+	jb	err
+	ret
+err:
+	jmp	cerror
diff --git a/lib/libc/amd64/sys/reboot.S b/lib/libc/amd64/sys/reboot.S
new file mode 100644
index 0000000..f90cca0
--- /dev/null
+++ b/lib/libc/amd64/sys/reboot.S
@@ -0,0 +1,47 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: reboot.S,v 1.1 1994/08/05 01:18:48 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+SYSCALL(reboot)
+	iret
diff --git a/lib/libc/amd64/sys/sbrk.S b/lib/libc/amd64/sys/sbrk.S
new file mode 100644
index 0000000..2d65b59
--- /dev/null
+++ b/lib/libc/amd64/sys/sbrk.S
@@ -0,0 +1,96 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: sbrk.S,v 1.2 1995/01/23 01:30:04 davidg Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id: sbrk.S,v 1.2 1995/01/23 01:30:04 davidg Exp $"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+#define	SYS_brk		17
+
+	.globl	_end
+	.globl	minbrk
+	.globl	curbrk
+
+	.data
+minbrk:	.long	_end
+curbrk:	.long	_end
+	.text
+
+ENTRY(sbrk)
+#ifdef PIC
+	movl	4(%esp),%ecx
+	PIC_PROLOGUE
+	movl	PIC_GOT(curbrk),%edx
+	movl	(%edx),%eax
+	PIC_EPILOGUE
+	testl	%ecx,%ecx
+	jz	back
+	addl	%eax,4(%esp)
+	lea	SYS_brk,%eax
+	LCALL(7,0)
+	jb	err
+	PIC_PROLOGUE
+	movl	PIC_GOT(curbrk),%edx
+	movl	(%edx),%eax
+	addl	%ecx,(%edx)
+	PIC_EPILOGUE
+back:
+	ret
+err:
+	jmp	PIC_PLT(cerror)
+
+#else /* !PIC */
+
+	movl	4(%esp),%ecx
+	movl	curbrk,%eax
+	testl	%ecx,%ecx
+	jz	back
+	addl	%eax,4(%esp)
+	lea	SYS_brk,%eax
+	LCALL(7,0)
+	jb	err
+	movl	curbrk,%eax
+	addl	%ecx,curbrk
+back:
+	ret
+err:
+	jmp	cerror
+#endif /* PIC */
diff --git a/lib/libc/amd64/sys/setlogin.S b/lib/libc/amd64/sys/setlogin.S
new file mode 100644
index 0000000..96c7886
--- /dev/null
+++ b/lib/libc/amd64/sys/setlogin.S
@@ -0,0 +1,59 @@
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: setlogin.S,v 1.1 1994/08/05 01:18:50 wollman Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+#include "SYS.h"
+
+.globl	__logname_valid		/* in getlogin() */
+
+SYSCALL(setlogin)
+#ifdef PIC
+	PIC_PROLOGUE
+	pushl	%eax
+	movl	PIC_GOT(__logname_valid),%eax
+	movl	$0,(%eax)
+	popl	%eax
+	PIC_EPILOGUE
+#else
+	movl	$0,__logname_valid
+#endif
+	ret				/* setlogin(name) */
diff --git a/lib/libc/amd64/sys/sigreturn.S b/lib/libc/amd64/sys/sigreturn.S
new file mode 100644
index 0000000..ac0ffd6
--- /dev/null
+++ b/lib/libc/amd64/sys/sigreturn.S
@@ -0,0 +1,57 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: sigreturn.S,v 1.1 1994/08/05 01:18:53 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+/*
+ * We must preserve the state of the registers as the user has set them up.
+ */
+#ifdef PROF
+#undef ENTRY
+#define	ENTRY(x) \
+	.globl _/**/x; .align 2; _/**/x:  pusha ; \
+	.data; 1:; .long 0; .text; movl $1b,%eax; call mcount; popa ; nop
+#endif /* PROF */
+
+SYSCALL(sigreturn)
+	ret
diff --git a/lib/libc/amd64/sys/vfork.S b/lib/libc/amd64/sys/vfork.S
new file mode 100644
index 0000000..06e3eb6
--- /dev/null
+++ b/lib/libc/amd64/sys/vfork.S
@@ -0,0 +1,81 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: Ovfork.S,v 1.1 1994/08/05 01:18:38 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+/*
+ * pid = vfork();
+ *
+ * %edx == 0 in parent process, %edx == 1 in child process.
+ * %eax == pid of child in parent, %eax == pid of parent in child.
+ *
+ */
+	.set	vfork,66
+.globl	_vfork
+.type	_vfork,@function
+
+_vfork:
+	popl	%ecx		/* my rta into ecx */
+	movl	$vfork, %eax
+	LCALL(7,0)
+	jb	verror
+vforkok:
+	cmpl	$0,%edx		/* child process? */
+	jne	child		/* yes */
+	jmp 	parent 
+.globl	_errno
+verror:
+#ifdef PIC
+	PIC_PROLOGUE
+	movl	PIC_GOT(_errno), %edx
+	movl	%eax,(%edx)
+	PIC_EPILOGUE
+#else
+	movl	%eax,_errno
+#endif
+	movl	$-1,%eax
+	jmp	%ecx
+child:
+	movl	$0,%eax
+parent:
+	jmp	%ecx
diff --git a/lib/libc/compat-43/Makefile.inc b/lib/libc/compat-43/Makefile.inc
new file mode 100644
index 0000000..1d06c57d
--- /dev/null
+++ b/lib/libc/compat-43/Makefile.inc
@@ -0,0 +1,16 @@
+#	@(#)Makefile.inc	8.1 (Berkeley) 6/2/93
+
+# compat-43 sources
+.PATH: ${.CURDIR}/${MACHINE}/compat-43 ${.CURDIR}/compat-43
+
+SRCS+=	creat.c gethostid.c getwd.c killpg.c sethostid.c setpgrp.c \
+	setrgid.c setruid.c sigcompat.c
+
+MAN2+=	compat-43/creat.2 compat-43/killpg.2 \
+	compat-43/sigblock.2 \
+	compat-43/sigpause.2 compat-43/sigsetmask.2 compat-43/sigvec.2
+
+MAN3+=  compat-43/gethostid.3 compat-43/setruid.3
+
+MLINKS+=setruid.3 setrgid.3
+MLINKS+=gethostid.3 sethostid.3
diff --git a/lib/libc/compat-43/creat.2 b/lib/libc/compat-43/creat.2
new file mode 100644
index 0000000..826909a
--- /dev/null
+++ b/lib/libc/compat-43/creat.2
@@ -0,0 +1,60 @@
+.\" Copyright (c) 1989, 1990, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)creat.2	8.1 (Berkeley) 6/2/93
+.\"
+.Dd June 2, 1993
+.Dt CREAT 2
+.Os BSD 4
+.Sh NAME
+.Nm creat
+.Nd create a new file
+.Sh SYNOPSIS
+.Fd #include <fcntl.h>
+.Ft int
+.Fn creat "char *path" "mode_t mode"
+.Sh DESCRIPTION
+.Bf -symbolic
+This interface is made obsolete by:
+.Ef
+.Xr open 2 .
+.Pp
+.Fn Creat
+is the same as:
+.Bd -literal -offset indent
+open(path, O_CREAT | O_TRUNC | O_WRONLY, mode);
+.Ed
+.Sh SEE ALSO
+.Xr open 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in Version 6 AT&T UNIX.
diff --git a/lib/libc/compat-43/creat.c b/lib/libc/compat-43/creat.c
new file mode 100644
index 0000000..31d60b8
--- /dev/null
+++ b/lib/libc/compat-43/creat.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)creat.c	8.1 (Berkeley) 6/2/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <fcntl.h>
+
+#if __STDC__
+creat(const char *path, mode_t mode)
+#else
+creat(path, mode)
+	char *path;
+	mode_t mode;
+#endif
+{
+	return(open(path, O_WRONLY|O_CREAT|O_TRUNC, mode));
+}
diff --git a/lib/libc/compat-43/gethostid.3 b/lib/libc/compat-43/gethostid.3
new file mode 100644
index 0000000..8f56a28
--- /dev/null
+++ b/lib/libc/compat-43/gethostid.3
@@ -0,0 +1,75 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)gethostid.3	8.1 (Berkeley) 6/2/93
+.\"
+.Dd June 2, 1993
+.Dt GETHOSTID 3
+.Os BSD 4.2
+.Sh NAME
+.Nm gethostid ,
+.Nm sethostid
+.Nd get/set unique identifier of current host
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft long
+.Fn gethostid void
+.Ft int
+.Fn sethostid "long hostid"
+.Sh DESCRIPTION
+.Fn Sethostid
+establishes a 32-bit identifier for the
+current processor that is intended to be unique among all
+UNIX systems in existence.  This is normally a DARPA Internet
+address for the local machine.  This call is allowed only to the
+super-user and is normally performed at boot time.
+.Pp
+.Fn Gethostid
+returns the 32-bit identifier for the current processor.
+.Pp
+This function has been deprecated.
+The hostid should be set or retrieved by use of
+.Xr sysctl 2 .
+.Sh SEE ALSO
+.Xr sysctl 2 ,
+.Xr gethostname 3 ,
+.Xr sysctl 8 .
+.Sh BUGS
+32 bits for the identifier is too small.
+.Sh HISTORY
+The
+.Fn gethostid
+and
+.Fn sethostid
+syscalls appeared in 
+.Bx 4.2
+and were dropped in
+.Bx 4.4 .
diff --git a/lib/libc/compat-43/gethostid.c b/lib/libc/compat-43/gethostid.c
new file mode 100644
index 0000000..c4caff6
--- /dev/null
+++ b/lib/libc/compat-43/gethostid.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)gethostid.c	8.1 (Berkeley) 6/2/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+#if __STDC__
+long
+gethostid(void)
+#else
+long
+gethostid()
+#endif
+{
+	int mib[2];
+	size_t size;
+	long value;
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_HOSTID;
+	size = sizeof value;
+	if (sysctl(mib, 2, &value, &size, NULL, 0) == -1)
+		return (-1);
+	return (value);
+}
diff --git a/lib/libc/compat-43/getwd.c b/lib/libc/compat-43/getwd.c
new file mode 100644
index 0000000..f105150e
--- /dev/null
+++ b/lib/libc/compat-43/getwd.c
@@ -0,0 +1,54 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getwd.c	8.1 (Berkeley) 6/2/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+char *
+getwd(buf)
+	char *buf;
+{
+	char *p;
+
+	if (p = getcwd(buf, MAXPATHLEN))
+		return(p);
+	(void)strcpy(buf, strerror(errno));
+	return((char *)NULL);
+}
diff --git a/lib/libc/compat-43/killpg.2 b/lib/libc/compat-43/killpg.2
new file mode 100644
index 0000000..b57e406
--- /dev/null
+++ b/lib/libc/compat-43/killpg.2
@@ -0,0 +1,95 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)killpg.2	8.1 (Berkeley) 6/2/93
+.\"
+.Dd June 2, 1993
+.Dt KILLPG 2
+.Os BSD 4
+.Sh NAME
+.Nm killpg
+.Nd send signal to a process group
+.Sh SYNOPSIS
+.Fd #include <signal.h>
+.Ft int
+.Fn killpg "pid_t pgrp" "int sig"
+.Sh DESCRIPTION
+.Fn Killpg
+sends the signal
+.Fa sig
+to the process group
+.Fa pgrp .
+See
+.Xr sigaction 2
+for a list of signals.
+If
+.Fa pgrp
+is 0,
+.Fn killpg
+sends the signal to the sending process's process group.
+.Pp
+The sending process and members of the process group must
+have the same effective user ID, or
+the sender must be the super-user.
+As a single special case the continue signal SIGCONT may be sent
+to any process that is a descendant of the current process.
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.  Otherwise,
+a value of -1 is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Killpg
+will fail and no signal will be sent if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+.Fa Sig
+is not a valid signal number.
+.It Bq Er ESRCH
+No process can be found in the process group specified by
+.Fa pgrp .
+.It Bq Er ESRCH
+The process group was given as 0
+but the sending process does not have a process group.
+.It Bq Er EPERM
+The sending process is not the super-user and one or more
+of the target processes has an effective user ID different from that
+of the sending process.
+.El
+.Sh SEE ALSO
+.Xr kill 2 ,
+.Xr getpgrp 2 ,
+.Xr sigaction 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.0 .
diff --git a/lib/libc/compat-43/killpg.c b/lib/libc/compat-43/killpg.c
new file mode 100644
index 0000000..f9b7901
--- /dev/null
+++ b/lib/libc/compat-43/killpg.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)killpg.c	8.1 (Berkeley) 6/2/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <signal.h>
+#include <errno.h>
+
+/*
+ * Backwards-compatible killpg().
+ */
+#if __STDC__
+killpg(pid_t pgid, int sig)
+#else
+killpg(pgid, sig)
+	pid_t pgid;
+	int sig;
+#endif
+{
+	if (pgid == 1) {
+		errno = ESRCH;
+		return (-1);
+	}
+	return (kill(-pgid, sig));
+}
diff --git a/lib/libc/compat-43/sethostid.c b/lib/libc/compat-43/sethostid.c
new file mode 100644
index 0000000..8122c81
--- /dev/null
+++ b/lib/libc/compat-43/sethostid.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)sethostid.c	8.1 (Berkeley) 6/2/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+#if __STDC__
+long
+sethostid(long hostid)
+#else
+long
+sethostid(hostid)
+	long hostid;
+#endif
+{
+	int mib[2];
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_HOSTID;
+	if (sysctl(mib, 2, NULL, NULL, &hostid, sizeof hostid) == -1)
+		return (-1);
+	return (0);
+}
diff --git a/lib/libc/compat-43/setpgrp.c b/lib/libc/compat-43/setpgrp.c
new file mode 100644
index 0000000..df63ebd
--- /dev/null
+++ b/lib/libc/compat-43/setpgrp.c
@@ -0,0 +1,49 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)setpgrp.c	8.1 (Berkeley) 6/2/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <unistd.h>
+
+#if __STDC__
+setpgrp(pid_t pid, pid_t pgid)
+#else
+setpgrp(pid, pgid)
+	pid_t pid, pgid;
+#endif
+{
+	return(setpgid(pid, pgid));
+}
diff --git a/lib/libc/compat-43/setrgid.c b/lib/libc/compat-43/setrgid.c
new file mode 100644
index 0000000..1d86642
--- /dev/null
+++ b/lib/libc/compat-43/setrgid.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)setrgid.c	8.1 (Berkeley) 6/2/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <unistd.h>
+
+int
+#ifdef __STDC__
+setrgid(gid_t rgid)
+#else
+setrgid(rgid)
+	int rgid;
+#endif
+{
+
+	return (setregid(rgid, -1));
+}
diff --git a/lib/libc/compat-43/setruid.3 b/lib/libc/compat-43/setruid.3
new file mode 100644
index 0000000..7342b21
--- /dev/null
+++ b/lib/libc/compat-43/setruid.3
@@ -0,0 +1,79 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)setruid.3	8.1 (Berkeley) 6/2/93
+.\"
+.Dd June 2, 1993
+.Dt SETRUID 3
+.Os BSD 4.2
+.Sh NAME
+.Nm setruid ,
+.Nm setrgid
+.Nd set user and group ID
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Ft int
+.Fn setruid "uid_t ruid"
+.Ft int
+.Fn setrgid "gid_t rgid"
+.Sh DESCRIPTION
+The
+.Fn setruid
+function
+.Pq Fn setrgid
+sets the real user ID (group ID) of the
+current process.
+.Sh RETURN VALUES
+Upon success, these functions return 0;
+otherwise \-1 is returned.
+.Pp
+If the user is not the super user, or the uid
+specified is not the real or effective ID, these
+functions return \-1.
+.Pp
+The use of these calls is not portable.
+Their use is discouraged; they will be removed in the future.
+.Sh SEE ALSO
+.Xr setuid 2 ,
+.Xr setgid 2 ,
+.Xr seteuid 2 ,
+.Xr setegid 2 ,
+.Xr getuid 2 ,
+.Xr getgid 2
+.Sh HISTORY
+The
+.Fn setruid
+and
+.Fn setrgid
+syscalls appeared in 
+.Bx 4.2
+and were dropped in
+.Bx 4.4 .
diff --git a/lib/libc/compat-43/setruid.c b/lib/libc/compat-43/setruid.c
new file mode 100644
index 0000000..1551abb
--- /dev/null
+++ b/lib/libc/compat-43/setruid.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)setruid.c	8.1 (Berkeley) 6/2/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <unistd.h>
+
+int
+#ifdef __STDC__
+setruid(uid_t ruid)
+#else
+setruid(ruid)
+	int ruid;
+#endif
+{
+
+	return (setreuid(ruid, -1));
+}
diff --git a/lib/libc/compat-43/sigblock.2 b/lib/libc/compat-43/sigblock.2
new file mode 100644
index 0000000..60e4251
--- /dev/null
+++ b/lib/libc/compat-43/sigblock.2
@@ -0,0 +1,84 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)sigblock.2	8.1 (Berkeley) 6/2/93
+.\"
+.Dd June 2, 1993
+.Dt SIGBLOCK 2
+.Os BSD 4.2
+.Sh NAME
+.Nm sigblock
+.Nd block signals
+.Sh SYNOPSIS
+.Fd #include <signal.h>
+.Ft int
+.Fn sigblock "int mask"
+.Ft int
+.Fn sigmask signum
+.Sh DESCRIPTION
+.Bf -symbolic
+This interface is made obsolete by:
+.Ef
+.Xr sigprocmask 2 .
+.Pp
+.Fn Sigblock
+adds the signals specified in
+.Fa mask
+to the set of signals currently
+being blocked from delivery.
+Signals are blocked if the
+corresponding bit in 
+.Fa mask
+is a 1; the macro
+.Fn sigmask
+is provided to construct the mask for a given
+.Fa signum .
+.Pp
+It is not possible to block
+.Dv SIGKILL
+or
+.Dv SIGSTOP ;
+this restriction is silently
+imposed by the system.
+.Sh RETURN VALUES
+The previous set of masked signals is returned.
+.Sh SEE ALSO
+.Xr kill 2 ,
+.Xr sigprocmask 2 ,
+.Xr sigaction 2 ,
+.Xr sigsetmask 2 ,
+.Xr sigsetops 3
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2
+and has been deprecated.
diff --git a/lib/libc/compat-43/sigcompat.c b/lib/libc/compat-43/sigcompat.c
new file mode 100644
index 0000000..69b1870
--- /dev/null
+++ b/lib/libc/compat-43/sigcompat.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)sigcompat.c	8.1 (Berkeley) 6/2/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <signal.h>
+
+sigvec(signo, sv, osv)
+	int signo;
+	struct sigvec *sv, *osv;
+{
+	int ret;
+
+	if (sv)
+		sv->sv_flags ^= SV_INTERRUPT;	/* !SA_INTERRUPT */
+	ret = sigaction(signo, (struct sigaction *)sv, (struct sigaction *)osv);
+	if (ret == 0 && osv)
+		osv->sv_flags ^= SV_INTERRUPT;	/* !SA_INTERRUPT */
+	return (ret);
+}
+
+sigsetmask(mask)
+	int mask;
+{
+	int omask, n;
+
+	n = sigprocmask(SIG_SETMASK, (sigset_t *) &mask, (sigset_t *) &omask);
+	if (n)
+		return (n);
+	return (omask);
+}
+
+sigblock(mask)
+	int mask;
+{
+	int omask, n;
+
+	n = sigprocmask(SIG_BLOCK, (sigset_t *) &mask, (sigset_t *) &omask);
+	if (n)
+		return (n);
+	return (omask);
+}
+
+sigpause(mask)
+	int mask;
+{
+	return (sigsuspend((sigset_t *)&mask));
+}
diff --git a/lib/libc/compat-43/sigpause.2 b/lib/libc/compat-43/sigpause.2
new file mode 100644
index 0000000..7c6c097
--- /dev/null
+++ b/lib/libc/compat-43/sigpause.2
@@ -0,0 +1,74 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)sigpause.2	8.1 (Berkeley) 6/2/93
+.\"
+.Dd June 2, 1993
+.Dt SIGPAUSE 2
+.Os BSD 4
+.Sh NAME
+.Nm sigpause
+.Nd atomically release blocked signals and wait for interrupt
+.Sh SYNOPSIS
+.Fd #include <signal.h>
+.Ft int
+.Fn sigpause "int sigmask"
+.Sh DESCRIPTION
+.Sy This interface is made obsolete by
+.Xr sigsuspend 2 .
+.Pp
+.Fn Sigpause
+assigns 
+.Fa sigmask
+to the set of masked signals
+and then waits for a signal to arrive;
+on return the set of masked signals is restored.
+.Fa Sigmask
+is usually 0 to indicate that no
+signals are to be blocked.
+.Fn Sigpause
+always terminates by being interrupted, returning -1 with
+.Va errno
+set to
+.Dv EINTR
+.Sh SEE ALSO
+.Xr sigsuspend 2 ,
+.Xr kill 2 ,
+.Xr sigaction 2 ,
+.Xr sigprocmask 2 ,
+.Xr sigblock 2 ,
+.Xr sigvec 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2
+and has been deprecated.
diff --git a/lib/libc/compat-43/sigsetmask.2 b/lib/libc/compat-43/sigsetmask.2
new file mode 100644
index 0000000..13b7c1a
--- /dev/null
+++ b/lib/libc/compat-43/sigsetmask.2
@@ -0,0 +1,82 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)sigsetmask.2	8.1 (Berkeley) 6/2/93
+.\"
+.Dd June 2, 1993
+.Dt SIGSETMASK 2
+.Os BSD 4.2
+.Sh NAME
+.Nm sigsetmask
+.Nd set current signal mask
+.Sh SYNOPSIS
+.Fd #include <signal.h>
+.Ft int
+.Fn sigsetmask "int mask"
+.Fn sigmask signum
+.Sh DESCRIPTION
+.Bf -symbolic
+This interface is made obsoleted by:
+.Ef
+.Xr sigprocmask 2 .
+.Pp
+.Fn Sigsetmask
+sets the current signal mask
+Signals are blocked from delivery if the
+corresponding bit in 
+.Fa mask
+is a 1; the macro
+.Fn sigmask
+is provided to construct the mask for a given
+.Fa signum .
+.Pp
+The system
+quietly disallows
+.Dv SIGKILL
+or
+.Dv SIGSTOP
+to be blocked.
+.Sh RETURN VALUES
+The previous set of masked signals is returned.
+.Sh SEE ALSO
+.Xr sigprocmask 2 ,
+.Xr kill 2 ,
+.Xr sigaction 2 ,
+.Xr sigsuspend 2 ,
+.Xr sigvec 2 ,
+.Xr sigblock 2 ,
+.Xr sigsetops 3
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2
+and has been deprecated.
diff --git a/lib/libc/compat-43/sigvec.2 b/lib/libc/compat-43/sigvec.2
new file mode 100644
index 0000000..1b5244f
--- /dev/null
+++ b/lib/libc/compat-43/sigvec.2
@@ -0,0 +1,325 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)sigvec.2	8.2 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt SIGVEC 2
+.Os BSD 4
+.Sh NAME
+.Nm sigvec
+.Nd software signal facilities
+.Sh SYNOPSIS
+.Fd #include <signal.h>
+.Bd -literal
+struct sigvec {
+        void     (*sv_handler)();
+	sigset_t sv_mask;
+	int      sv_flags;
+};
+.Ed
+.Fn sigvec "int sig" "struct sigvec *vec" "struct sigvec *ovec"
+.Sh DESCRIPTION
+.Bf -symbolic
+This interface is made obsolete by sigaction(2).
+.Ef
+.Pp
+The system defines a set of signals that may be delivered to a process.
+Signal delivery resembles the occurrence of a hardware interrupt:
+the signal is blocked from further occurrence, the current process 
+context is saved, and a new one is built.  A process may specify a
+.Em handler
+to which a signal is delivered, or specify that a signal is to be 
+.Em blocked
+or
+.Em ignored .
+A process may also specify that a default action is to be taken
+by the system when a signal occurs.
+Normally, signal handlers execute on the current stack
+of the process.  This may be changed, on a per-handler basis,
+so that signals are taken on a special
+.Em "signal stack" .
+.Pp
+All signals have the same
+.Em priority .
+Signal routines execute with the signal that caused their
+invocation
+.Em blocked ,
+but other signals may yet occur.
+A global 
+.Em "signal mask"
+defines the set of signals currently blocked from delivery
+to a process.  The signal mask for a process is initialized
+from that of its parent (normally 0).  It
+may be changed with a
+.Xr sigblock 2
+or
+.Xr sigsetmask 2
+call, or when a signal is delivered to the process.
+.Pp
+When a signal
+condition arises for a process, the signal is added to a set of
+signals pending for the process.  If the signal is not currently
+.Em blocked
+by the process then it is delivered to the process.  When a signal
+is delivered, the current state of the process is saved,
+a new signal mask is calculated (as described below), 
+and the signal handler is invoked.  The call to the handler
+is arranged so that if the signal handling routine returns
+normally the process will resume execution in the context
+from before the signal's delivery.
+If the process wishes to resume in a different context, then it
+must arrange to restore the previous context itself.
+.Pp
+When a signal is delivered to a process a new signal mask is
+installed for the duration of the process' signal handler
+(or until a
+.Xr sigblock
+or
+.Xr sigsetmask
+call is made).
+This mask is formed by taking the current signal mask,
+adding the signal to be delivered, and 
+.Em or Ns 'ing
+in the signal mask associated with the handler to be invoked.
+.Pp
+.Fn Sigvec
+assigns a handler for a specific signal.  If
+.Fa vec
+is non-zero, it
+specifies a handler routine and mask
+to be used when delivering the specified signal.
+Further, if the
+.Dv SV_ONSTACK
+bit is set in
+.Fa sv_flags ,
+the system will deliver the signal to the process on a
+.Em "signal stack" ,
+specified with
+.Xr sigaltstack 2 .
+If 
+.Fa ovec
+is non-zero, the previous handling information for the signal
+is returned to the user.
+.Pp
+The following is a list of all signals
+with names as in the include file
+.Aq Pa signal.h :
+.Bl -column SIGVTALARMXX "create core imagexxx"
+.It Sy "  NAME  " "	  Default Action  " "	              Description"
+.It Dv SIGHUP No "	terminate process" "	terminal line hangup"
+.It Dv SIGINT No "	terminate process" "	interrupt program"
+.It Dv SIGQUIT No "	create core image" "	quit program"
+.It Dv SIGILL No "	create core image" "	illegal instruction"
+.It Dv SIGTRAP No "	create core image" "	trace trap"
+.It Dv SIGABRT No "	create core image" Xr 	abort 2
+call (formerly
+.Dv SIGIOT )
+.It Dv SIGEMT No "	create core image" "	emulate instruction executed"
+.It Dv SIGFPE No "	create core image" "	floating-point exception"
+.It Dv SIGKILL No "	terminate process" "	kill program"
+.It Dv SIGBUS No "	create core image" "	bus error"
+.It Dv SIGSEGV No "	create core image" "	segmentation violation"
+.It Dv SIGSYS No "	create core image" "	system call given invalid argument"
+.It Dv SIGPIPE No "	terminate process" "	write on a pipe with no reader"
+.It Dv SIGALRM No "	terminate process" "	real-time timer expired"
+.It Dv SIGTERM No "	terminate process" "	software termination signal"
+.It Dv SIGURG No "	discard signal" "	urgent condition present on socket"
+.It Dv SIGSTOP No "	stop process" "	stop (cannot be caught or ignored)"
+.It Dv SIGTSTP No "	stop process" "	stop signal generated from keyboard"
+.It Dv SIGCONT No "	discard signal" "	continue after stop"
+.It Dv SIGCHLD No "	discard signal" "	child status has changed"
+.It Dv SIGTTIN No "	stop process" "	background read attempted from control terminal"
+.It Dv SIGTTOU No "	stop process" "	background write attempted to control terminal"
+.It Dv SIGIO No "	discard signal" Tn "	I/O"
+is possible on a descriptor (see
+.Xr fcntl 2 )
+.It Dv SIGXCPU No "	terminate process" "	cpu time limit exceeded (see"
+.Xr setrlimit 2 )
+.It Dv SIGXFSZ No "	terminate process" "	file size limit exceeded (see"
+.Xr setrlimit 2 )
+.It Dv SIGVTALRM No "	terminate process" "	virtual time alarm (see"
+.Xr setitimer 2 )
+.It Dv SIGPROF No "	terminate process" "	profiling timer alarm (see"
+.Xr setitimer 2 )
+.It Dv SIGWINCH No "	discard signal" "	Window size change"
+.It Dv SIGINFO No "	discard signal" "	status request from keyboard"
+.It Dv SIGUSR1 No "	terminate process" "	User defined signal 1"
+.It Dv SIGUSR2 No "	terminate process" "	User defined signal 2"
+.El
+.Pp
+Once a signal handler is installed, it remains installed
+until another
+.Fn sigvec
+call is made, or an
+.Xr execve 2
+is performed.
+A signal-specific default action may be reset by
+setting
+.Fa sv_handler
+to
+.Dv SIG_DFL .
+The defaults are process termination, possibly with core dump;
+no action; stopping the process; or continuing the process.
+See the above signal list for each signal's default action.
+If
+.Fa sv_handler
+is
+.Dv SIG_IGN
+current and pending instances
+of the signal are ignored and discarded.
+.Pp
+If a signal is caught during the system calls listed below,
+the call is normally restarted.
+The call can be forced to terminate prematurely with an
+.Dv EINTR
+error return by setting the
+.Dv SV_INTERRUPT
+bit in
+.Fa sv_flags .
+The affected system calls include
+.Xr read 2 ,
+.Xr write 2 ,
+.Xr sendto 2 ,
+.Xr recvfrom 2 ,
+.Xr sendmsg 2
+and
+.Xr recvmsg 2
+on a communications channel or a slow device (such as a terminal,
+but not a regular file)
+and during a
+.Xr wait 2
+or
+.Xr ioctl 2 .
+However, calls that have already committed are not restarted,
+but instead return a partial success (for example, a short read count).
+.Pp
+After a
+.Xr fork 2
+or
+.Xr vfork 2
+all signals, the signal mask, the signal stack,
+and the restart/interrupt flags are inherited by the child.
+.Pp
+.Xr Execve 2
+reinstates the default
+action for all signals which were caught and
+resets all signals to be caught on the user stack.
+Ignored signals remain ignored;
+the signal mask remains the same;
+signals that interrupt system calls continue to do so.
+.Sh NOTES
+The mask specified in 
+.Fa vec
+is not allowed to block
+.Dv SIGKILL
+or
+.Dv SIGSTOP .
+This is done silently by the system.
+.Pp
+The
+.Dv SV_INTERRUPT
+flag is not available in
+.Bx 4.2 ,
+hence it should not be used if backward compatibility is needed.
+.Sh RETURN VALUES
+A 0 value indicated that the call succeeded.  A \-1 return value
+indicates an error occurred and
+.Va errno
+is set to indicated the reason.
+.Sh ERRORS
+.Fn Sigvec
+will fail and no new signal handler will be installed if one
+of the following occurs:
+.Bl -tag -width [EINVAL]
+.It Bq Er EFAULT
+Either
+.Fa vec
+or 
+.Fa ovec
+points to memory that is not a valid part of the process
+address space.
+.It Bq Er EINVAL
+.Fa Sig
+is not a valid signal number.
+.It Bq Er EINVAL
+An attempt is made to ignore or supply a handler for
+.Dv SIGKILL
+or
+.Dv SIGSTOP .
+.El
+.Sh SEE ALSO
+.Xr kill 1 ,
+.Xr kill 2 ,
+.Xr ptrace 2 ,
+.Xr sigaction 2 ,
+.Xr sigaltstack 2 ,
+.Xr sigblock 2 ,
+.Xr sigpause 2 ,
+.Xr sigprocmask 2 ,
+.Xr sigsetmask 2 ,
+.Xr sigsuspend 2 ,
+.Xr setjmp 3 ,
+.Xr siginterrupt 3 ,
+.Xr signal 3,
+.Xr sigsetops 3 ,
+.Xr tty 4
+.Sh EXAMPLE
+On the
+.Tn VAX\-11
+The handler routine can be declared:
+.Bd -literal -offset indent
+void handler(sig, code, scp)
+int sig, code;
+struct sigcontext *scp;
+.Ed
+.Pp
+Here
+.Fa sig
+is the signal number, into which the hardware faults and traps are
+mapped as defined below. 
+.Fa Code
+is a parameter that is either a constant
+as given below or, for compatibility mode faults, the code provided by
+the hardware (Compatibility mode faults are distinguished from the
+other
+.Dv SIGILL
+traps by having
+.Dv PSL_CM
+set in the psl).
+.Fa Scp
+is a pointer to the
+.Fa sigcontext
+structure (defined in
+.Aq Pa signal.h ) ,
+used to restore the context from before the signal.
+.Sh BUGS
+This manual page is still confusing.
diff --git a/lib/libc/db/Makefile.inc b/lib/libc/db/Makefile.inc
new file mode 100644
index 0000000..77af9c5
--- /dev/null
+++ b/lib/libc/db/Makefile.inc
@@ -0,0 +1,10 @@
+#	@(#)Makefile.inc	8.2 (Berkeley) 2/21/94
+#
+CFLAGS+=-D__DBINTERFACE_PRIVATE
+
+.include "${.CURDIR}/db/btree/Makefile.inc"
+.include "${.CURDIR}/db/db/Makefile.inc"
+.include "${.CURDIR}/db/hash/Makefile.inc"
+.include "${.CURDIR}/db/man/Makefile.inc"
+.include "${.CURDIR}/db/mpool/Makefile.inc"
+.include "${.CURDIR}/db/recno/Makefile.inc"
diff --git a/lib/libc/db/VERSION b/lib/libc/db/VERSION
new file mode 100644
index 0000000..be08b78
--- /dev/null
+++ b/lib/libc/db/VERSION
@@ -0,0 +1,97 @@
+#	@(#)VERSION	8.9 (Berkeley) 4/2/94
+
+This is version 1.74 of the Berkeley DB code.
+
+If your version of the DB code doesn't have a copy
+of this version file, it's really old, please update it!
+
+New versions of this software are periodically made
+available by anonymous ftp from ftp.cs.berkeley.edu,
+in the file ucb/4bsd/db.tar.Z, or from ftp.uu.net.
+If you'd like to get announcements of future releases
+of this software, send email to the contact address
+below.
+
+Email questions may be addressed to Keith Bostic at
+bostic@cs.berkeley.edu.
+
+============================================
+Distribution contents:
+
+Makefile.inc	Ignore this, it's the 4.4BSD subsystem Makefile.
+PORT		The per OS/architecture directories to use to build
+		libdb.a, if you're not running 4.4BSD.  See the file
+		PORT/README for more information.
+README		This file.
+VERSION		This file.
+btree		B+tree routines.
+db		Dbopen(3) interface routine.
+doc		USENIX papers, formatted manual pages.
+hash		Extended linear hashing routines.
+man		Unformatted manual pages.
+mpool		Memory pool routines.
+recno		Fixed/variable length record routines.
+test		Test package.
+
+============================================
+1.73 -> 1.74
+	recno:	Don't put the record if rec_search fails, in rec_rdelete.
+		Create fixed-length intermediate records past "end" of DB
+		correctly.
+		Realloc bug when reading in fixed records.
+	all:	First cut at port to Alpha (64-bit architecture) using
+		4.4BSD basic integral types typedef's.
+		Cast allocation pointers to shut up old compilers.
+		Rework PORT directory into OS/machine directories.
+
+1.72 -> 1.73
+	btree:	If enough duplicate records were inserted and then deleted
+		that internal pages had references to empty pages of the
+		duplicate keys, the search function ended up on the wrong
+		page.
+
+1.7  -> 1.72	12 Oct 1993
+	hash:	Support NET/2 hash formats.
+		
+1.7  -> 1.71	16 Sep 1993
+	btree/recno:
+		Fix bug in internal search routines that caused
+		return of invalid pointers.
+
+1.6  -> 1.7	07 Sep 1993
+	hash:	Fixed big key overflow bugs.
+	test:	Portability hacks, rewrite test script, Makefile.
+	btree/recno:
+		Stop copying non-overflow key/data pairs.
+	PORT:	Break PORT directory up into per architecture/OS
+		subdirectories.
+
+1.5  -> 1.6	06 Jun 1993
+	hash:	In PAIRFITS, the first comparison should look at (P)[2].
+		The hash_realloc function was walking off the end of memory.
+		The overflow page number was wrong when bumping splitpoint.
+
+1.4  -> 1.5	23 May 1993
+	hash:	Set hash default fill factor dynamically.
+	recno:	Fixed bug in sorted page splits.
+		Add page size parameter support.
+		Allow recno to specify the name of the underlying btree;
+			used for vi recovery.
+	btree/recno:
+		Support 64K pages.
+	btree/hash/recno:
+		Provide access to an underlying file descriptor.
+		Change sync routines to take a flag argument, recno
+			uses this to sync out the underlying btree.
+
+1.3  -> 1.4	10 May 1993
+	recno:	Delete the R_CURSORLOG flag from the recno interface.
+		Zero-length record fix for non-mmap reads.
+		Try and make SIZE_T_MAX test in open portable.
+
+1.2  -> 1.3	01 May 1993
+	btree:	Ignore user byte-order setting when reading already
+		existing database.  Fixes to byte-order conversions.
+
+1.1  -> 1.2	15 Apr 1993
+		No bug fixes, only compatibility hacks.
diff --git a/lib/libc/db/btree/Makefile.inc b/lib/libc/db/btree/Makefile.inc
new file mode 100644
index 0000000..71f8dfc
--- /dev/null
+++ b/lib/libc/db/btree/Makefile.inc
@@ -0,0 +1,7 @@
+#	@(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+
+.PATH: ${.CURDIR}/db/btree
+
+SRCS+=	bt_close.c bt_conv.c bt_debug.c bt_delete.c bt_get.c bt_open.c \
+	bt_overflow.c bt_page.c bt_put.c bt_search.c bt_seq.c bt_split.c \
+	bt_stack.c bt_utils.c
diff --git a/lib/libc/db/btree/bt_close.c b/lib/libc/db/btree/bt_close.c
new file mode 100644
index 0000000..6269bd5
--- /dev/null
+++ b/lib/libc/db/btree/bt_close.c
@@ -0,0 +1,204 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_close.c	8.3 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <db.h>
+#include "btree.h"
+
+static int bt_meta __P((BTREE *));
+
+/*
+ * BT_CLOSE -- Close a btree.
+ *
+ * Parameters:
+ *	dbp:	pointer to access method
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+int
+__bt_close(dbp)
+	DB *dbp;
+{
+	BTREE *t;
+	int fd;
+
+	t = dbp->internal;
+
+	/* Toss any page pinned across calls. */
+	if (t->bt_pinned != NULL) {
+		mpool_put(t->bt_mp, t->bt_pinned, 0);
+		t->bt_pinned = NULL;
+	}
+
+	/*
+	 * Delete any already deleted record that we've been saving
+	 * because the cursor pointed to it.
+	 */
+	if (ISSET(t, B_DELCRSR) && __bt_crsrdel(t, &t->bt_bcursor))
+		return (RET_ERROR);
+
+	if (__bt_sync(dbp, 0) == RET_ERROR)
+		return (RET_ERROR);
+
+	if (mpool_close(t->bt_mp) == RET_ERROR)
+		return (RET_ERROR);
+
+	if (t->bt_stack)
+		free(t->bt_stack);
+	if (t->bt_kbuf)
+		free(t->bt_kbuf);
+	if (t->bt_dbuf)
+		free(t->bt_dbuf);
+
+	fd = t->bt_fd;
+	free(t);
+	free(dbp);
+	return (close(fd) ? RET_ERROR : RET_SUCCESS);
+}
+
+/*
+ * BT_SYNC -- sync the btree to disk.
+ *
+ * Parameters:
+ *	dbp:	pointer to access method
+ *
+ * Returns:
+ *	RET_SUCCESS, RET_ERROR.
+ */
+int
+__bt_sync(dbp, flags)
+	const DB *dbp;
+	u_int flags;
+{
+	BTREE *t;
+	int status;
+	PAGE *h;
+	void *p;
+
+	t = dbp->internal;
+
+	/* Toss any page pinned across calls. */
+	if (t->bt_pinned != NULL) {
+		mpool_put(t->bt_mp, t->bt_pinned, 0);
+		t->bt_pinned = NULL;
+	}
+
+	/* Sync doesn't currently take any flags. */
+	if (flags != 0) {
+		errno = EINVAL;
+		return (RET_ERROR);
+	}
+
+	if (ISSET(t, B_INMEM | B_RDONLY) || !ISSET(t, B_MODIFIED))
+		return (RET_SUCCESS);
+
+	if (ISSET(t, B_METADIRTY) && bt_meta(t) == RET_ERROR)
+		return (RET_ERROR);
+
+	/*
+	 * Nastiness.  If the cursor has been marked for deletion, but not
+	 * actually deleted, we have to make a copy of the page, delete the
+	 * key/data item, sync the file, and then restore the original page
+	 * contents.
+	 */
+	if (ISSET(t, B_DELCRSR)) {
+		if ((p = (void *)malloc(t->bt_psize)) == NULL)
+			return (RET_ERROR);
+		if ((h = mpool_get(t->bt_mp, t->bt_bcursor.pgno, 0)) == NULL)
+			return (RET_ERROR);
+		memmove(p, h, t->bt_psize);
+		if ((status =
+		    __bt_dleaf(t, h, t->bt_bcursor.index)) == RET_ERROR)
+			goto ecrsr;
+		mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+	}
+
+	if ((status = mpool_sync(t->bt_mp)) == RET_SUCCESS)
+		CLR(t, B_MODIFIED);
+
+ecrsr:	if (ISSET(t, B_DELCRSR)) {
+		if ((h = mpool_get(t->bt_mp, t->bt_bcursor.pgno, 0)) == NULL)
+			return (RET_ERROR);
+		memmove(h, p, t->bt_psize);
+		free(p);
+		mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+	}
+	return (status);
+}
+
+/*
+ * BT_META -- write the tree meta data to disk.
+ *
+ * Parameters:
+ *	t:	tree
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+static int
+bt_meta(t)
+	BTREE *t;
+{
+	BTMETA m;
+	void *p;
+
+	if ((p = mpool_get(t->bt_mp, P_META, 0)) == NULL)
+		return (RET_ERROR);
+
+	/* Fill in metadata. */
+	m.m_magic = BTREEMAGIC;
+	m.m_version = BTREEVERSION;
+	m.m_psize = t->bt_psize;
+	m.m_free = t->bt_free;
+	m.m_nrecs = t->bt_nrecs;
+	m.m_flags = t->bt_flags & SAVEMETA;
+
+	memmove(p, &m, sizeof(BTMETA));
+	mpool_put(t->bt_mp, p, MPOOL_DIRTY);
+	return (RET_SUCCESS);
+}
diff --git a/lib/libc/db/btree/bt_conv.c b/lib/libc/db/btree/bt_conv.c
new file mode 100644
index 0000000..eb49340
--- /dev/null
+++ b/lib/libc/db/btree/bt_conv.c
@@ -0,0 +1,221 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_conv.c	8.2 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+
+#include <stdio.h>
+
+#include <db.h>
+#include "btree.h"
+
+static void mswap __P((PAGE *));
+
+/*
+ * __BT_BPGIN, __BT_BPGOUT --
+ *	Convert host-specific number layout to/from the host-independent
+ *	format stored on disk.
+ *
+ * Parameters:
+ *	t:	tree
+ *	pg:	page number
+ *	h:	page to convert
+ */
+void
+__bt_pgin(t, pg, pp)
+	void *t;
+	pgno_t pg;
+	void *pp;
+{
+	PAGE *h;
+	indx_t i, top;
+	u_char flags;
+	char *p;
+
+	if (!ISSET(((BTREE *)t), B_NEEDSWAP))
+		return;
+	if (pg == P_META) {
+		mswap(pp);
+		return;
+	}
+
+	h = pp;
+	M_32_SWAP(h->pgno);
+	M_32_SWAP(h->prevpg);
+	M_32_SWAP(h->nextpg);
+	M_32_SWAP(h->flags);
+	M_16_SWAP(h->lower);
+	M_16_SWAP(h->upper);
+
+	top = NEXTINDEX(h);
+	if ((h->flags & P_TYPE) == P_BINTERNAL)
+		for (i = 0; i < top; i++) {
+			M_16_SWAP(h->linp[i]);
+			p = (char *)GETBINTERNAL(h, i);
+			P_32_SWAP(p);
+			p += sizeof(size_t);
+			P_32_SWAP(p);
+			p += sizeof(pgno_t);
+			if (*(u_char *)p & P_BIGKEY) {
+				p += sizeof(u_char);
+				P_32_SWAP(p);
+				p += sizeof(pgno_t);
+				P_32_SWAP(p);
+			}
+		}
+	else if ((h->flags & P_TYPE) == P_BLEAF)
+		for (i = 0; i < top; i++) {
+			M_16_SWAP(h->linp[i]);
+			p = (char *)GETBLEAF(h, i);
+			P_32_SWAP(p);
+			p += sizeof(size_t);
+			P_32_SWAP(p);
+			p += sizeof(size_t);
+			flags = *(u_char *)p;
+			if (flags & (P_BIGKEY | P_BIGDATA)) {
+				p += sizeof(u_char);
+				if (flags & P_BIGKEY) {
+					P_32_SWAP(p);
+					p += sizeof(pgno_t);
+					P_32_SWAP(p);
+				}
+				if (flags & P_BIGDATA) {
+					p += sizeof(size_t);
+					P_32_SWAP(p);
+					p += sizeof(pgno_t);
+					P_32_SWAP(p);
+				}
+			}
+		}
+}
+
+void
+__bt_pgout(t, pg, pp)
+	void *t;
+	pgno_t pg;
+	void *pp;
+{
+	PAGE *h;
+	indx_t i, top;
+	u_char flags;
+	char *p;
+
+	if (!ISSET(((BTREE *)t), B_NEEDSWAP))
+		return;
+	if (pg == P_META) {
+		mswap(pp);
+		return;
+	}
+
+	h = pp;
+	top = NEXTINDEX(h);
+	if ((h->flags & P_TYPE) == P_BINTERNAL)
+		for (i = 0; i < top; i++) {
+			p = (char *)GETBINTERNAL(h, i);
+			P_32_SWAP(p);
+			p += sizeof(size_t);
+			P_32_SWAP(p);
+			p += sizeof(pgno_t);
+			if (*(u_char *)p & P_BIGKEY) {
+				p += sizeof(u_char);
+				P_32_SWAP(p);
+				p += sizeof(pgno_t);
+				P_32_SWAP(p);
+			}
+			M_16_SWAP(h->linp[i]);
+		}
+	else if ((h->flags & P_TYPE) == P_BLEAF)
+		for (i = 0; i < top; i++) {
+			p = (char *)GETBLEAF(h, i);
+			P_32_SWAP(p);
+			p += sizeof(size_t);
+			P_32_SWAP(p);
+			p += sizeof(size_t);
+			flags = *(u_char *)p;
+			if (flags & (P_BIGKEY | P_BIGDATA)) {
+				p += sizeof(u_char);
+				if (flags & P_BIGKEY) {
+					P_32_SWAP(p);
+					p += sizeof(pgno_t);
+					P_32_SWAP(p);
+				}
+				if (flags & P_BIGDATA) {
+					p += sizeof(size_t);
+					P_32_SWAP(p);
+					p += sizeof(pgno_t);
+					P_32_SWAP(p);
+				}
+			}
+			M_16_SWAP(h->linp[i]);
+		}
+
+	M_32_SWAP(h->pgno);
+	M_32_SWAP(h->prevpg);
+	M_32_SWAP(h->nextpg);
+	M_32_SWAP(h->flags);
+	M_16_SWAP(h->lower);
+	M_16_SWAP(h->upper);
+}
+
+/*
+ * MSWAP -- Actually swap the bytes on the meta page.
+ *
+ * Parameters:
+ *	p:	page to convert
+ */
+static void
+mswap(pg)
+	PAGE *pg;
+{
+	char *p;
+
+	p = (char *)pg;
+	P_32_SWAP(p);		/* m_magic */
+	p += sizeof(u_int32_t);
+	P_32_SWAP(p);		/* m_version */
+	p += sizeof(u_int32_t);
+	P_32_SWAP(p);		/* m_psize */
+	p += sizeof(u_int32_t);
+	P_32_SWAP(p);		/* m_free */
+	p += sizeof(u_int32_t);
+	P_32_SWAP(p);		/* m_nrecs */
+	p += sizeof(u_int32_t);
+	P_32_SWAP(p);		/* m_flags */
+	p += sizeof(u_int32_t);
+}
diff --git a/lib/libc/db/btree/bt_debug.c b/lib/libc/db/btree/bt_debug.c
new file mode 100644
index 0000000..5f9ac1d
--- /dev/null
+++ b/lib/libc/db/btree/bt_debug.c
@@ -0,0 +1,331 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_debug.c	8.2 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <db.h>
+#include "btree.h"
+
+#ifdef DEBUG
+/*
+ * BT_DUMP -- Dump the tree
+ *
+ * Parameters:
+ *	dbp:	pointer to the DB
+ */
+void
+__bt_dump(dbp)
+	DB *dbp;
+{
+	BTREE *t;
+	PAGE *h;
+	pgno_t i;
+	char *sep;
+
+	t = dbp->internal;
+	(void)fprintf(stderr, "%s: pgsz %d",
+	    ISSET(t, B_INMEM) ? "memory" : "disk", t->bt_psize);
+	if (ISSET(t, R_RECNO))
+		(void)fprintf(stderr, " keys %lu", t->bt_nrecs);
+#undef X
+#define	X(flag, name) \
+	if (ISSET(t, flag)) { \
+		(void)fprintf(stderr, "%s%s", sep, name); \
+		sep = ", "; \
+	}
+	if (t->bt_flags) {
+		sep = " flags (";
+		X(B_DELCRSR,	"DELCRSR");
+		X(R_FIXLEN,	"FIXLEN");
+		X(B_INMEM,	"INMEM");
+		X(B_NODUPS,	"NODUPS");
+		X(B_RDONLY,	"RDONLY");
+		X(R_RECNO,	"RECNO");
+		X(B_SEQINIT,	"SEQINIT");
+		X(B_METADIRTY,"METADIRTY");
+		(void)fprintf(stderr, ")\n");
+	}
+#undef X
+
+	for (i = P_ROOT; (h = mpool_get(t->bt_mp, i, 0)) != NULL; ++i) {
+		__bt_dpage(h);
+		(void)mpool_put(t->bt_mp, h, 0);
+	}
+}
+
+/*
+ * BT_DMPAGE -- Dump the meta page
+ *
+ * Parameters:
+ *	h:	pointer to the PAGE
+ */
+void
+__bt_dmpage(h)
+	PAGE *h;
+{
+	BTMETA *m;
+	char *sep;
+
+	m = (BTMETA *)h;
+	(void)fprintf(stderr, "magic %lx\n", m->m_magic);
+	(void)fprintf(stderr, "version %lu\n", m->m_version);
+	(void)fprintf(stderr, "psize %lu\n", m->m_psize);
+	(void)fprintf(stderr, "free %lu\n", m->m_free);
+	(void)fprintf(stderr, "nrecs %lu\n", m->m_nrecs);
+	(void)fprintf(stderr, "flags %lu", m->m_flags);
+#undef X
+#define	X(flag, name) \
+	if (m->m_flags & flag) { \
+		(void)fprintf(stderr, "%s%s", sep, name); \
+		sep = ", "; \
+	}
+	if (m->m_flags) {
+		sep = " (";
+		X(B_NODUPS,	"NODUPS");
+		X(R_RECNO,	"RECNO");
+		(void)fprintf(stderr, ")");
+	}
+}
+
+/*
+ * BT_DNPAGE -- Dump the page
+ *
+ * Parameters:
+ *	n:	page number to dump.
+ */
+void
+__bt_dnpage(dbp, pgno)
+	DB *dbp;
+	pgno_t pgno;
+{
+	BTREE *t;
+	PAGE *h;
+
+	t = dbp->internal;
+	if ((h = mpool_get(t->bt_mp, pgno, 0)) != NULL) {
+		__bt_dpage(h);
+		(void)mpool_put(t->bt_mp, h, 0);
+	}
+}
+
+/*
+ * BT_DPAGE -- Dump the page
+ *
+ * Parameters:
+ *	h:	pointer to the PAGE
+ */
+void
+__bt_dpage(h)
+	PAGE *h;
+{
+	BINTERNAL *bi;
+	BLEAF *bl;
+	RINTERNAL *ri;
+	RLEAF *rl;
+	indx_t cur, top;
+	char *sep;
+
+	(void)fprintf(stderr, "    page %d: (", h->pgno);
+#undef X
+#define	X(flag, name) \
+	if (h->flags & flag) { \
+		(void)fprintf(stderr, "%s%s", sep, name); \
+		sep = ", "; \
+	}
+	sep = "";
+	X(P_BINTERNAL,	"BINTERNAL")		/* types */
+	X(P_BLEAF,	"BLEAF")
+	X(P_RINTERNAL,	"RINTERNAL")		/* types */
+	X(P_RLEAF,	"RLEAF")
+	X(P_OVERFLOW,	"OVERFLOW")
+	X(P_PRESERVE,	"PRESERVE");
+	(void)fprintf(stderr, ")\n");
+#undef X
+
+	(void)fprintf(stderr, "\tprev %2d next %2d", h->prevpg, h->nextpg);
+	if (h->flags & P_OVERFLOW)
+		return;
+
+	top = NEXTINDEX(h);
+	(void)fprintf(stderr, " lower %3d upper %3d nextind %d\n",
+	    h->lower, h->upper, top);
+	for (cur = 0; cur < top; cur++) {
+		(void)fprintf(stderr, "\t[%03d] %4d ", cur, h->linp[cur]);
+		switch(h->flags & P_TYPE) {
+		case P_BINTERNAL:
+			bi = GETBINTERNAL(h, cur);
+			(void)fprintf(stderr,
+			    "size %03d pgno %03d", bi->ksize, bi->pgno);
+			if (bi->flags & P_BIGKEY)
+				(void)fprintf(stderr, " (indirect)");
+			else if (bi->ksize)
+				(void)fprintf(stderr,
+				    " {%.*s}", (int)bi->ksize, bi->bytes);
+			break;
+		case P_RINTERNAL:
+			ri = GETRINTERNAL(h, cur);
+			(void)fprintf(stderr, "entries %03d pgno %03d",
+				ri->nrecs, ri->pgno);
+			break;
+		case P_BLEAF:
+			bl = GETBLEAF(h, cur);
+			if (bl->flags & P_BIGKEY)
+				(void)fprintf(stderr,
+				    "big key page %lu size %u/",
+				    *(pgno_t *)bl->bytes,
+				    *(size_t *)(bl->bytes + sizeof(pgno_t)));
+			else if (bl->ksize)
+				(void)fprintf(stderr, "%s/", bl->bytes);
+			if (bl->flags & P_BIGDATA)
+				(void)fprintf(stderr,
+				    "big data page %lu size %u",
+				    *(pgno_t *)(bl->bytes + bl->ksize),
+				    *(size_t *)(bl->bytes + bl->ksize +
+				    sizeof(pgno_t)));
+			else if (bl->dsize)
+				(void)fprintf(stderr, "%.*s",
+				    (int)bl->dsize, bl->bytes + bl->ksize);
+			break;
+		case P_RLEAF:
+			rl = GETRLEAF(h, cur);
+			if (rl->flags & P_BIGDATA)
+				(void)fprintf(stderr,
+				    "big data page %lu size %u",
+				    *(pgno_t *)rl->bytes,
+				    *(size_t *)(rl->bytes + sizeof(pgno_t)));
+			else if (rl->dsize)
+				(void)fprintf(stderr,
+				    "%.*s", (int)rl->dsize, rl->bytes);
+			break;
+		}
+		(void)fprintf(stderr, "\n");
+	}
+}
+#endif
+
+#ifdef STATISTICS
+/*
+ * BT_STAT -- Gather/print the tree statistics
+ *
+ * Parameters:
+ *	dbp:	pointer to the DB
+ */
+void
+__bt_stat(dbp)
+	DB *dbp;
+{
+	extern u_long bt_cache_hit, bt_cache_miss, bt_pfxsaved, bt_rootsplit;
+	extern u_long bt_sortsplit, bt_split;
+	BTREE *t;
+	PAGE *h;
+	pgno_t i, pcont, pinternal, pleaf;
+	u_long ifree, lfree, nkeys;
+	int levels;
+
+	t = dbp->internal;
+	pcont = pinternal = pleaf = 0;
+	nkeys = ifree = lfree = 0;
+	for (i = P_ROOT; (h = mpool_get(t->bt_mp, i, 0)) != NULL; ++i) {
+		switch(h->flags & P_TYPE) {
+		case P_BINTERNAL:
+		case P_RINTERNAL:
+			++pinternal;
+			ifree += h->upper - h->lower;
+			break;
+		case P_BLEAF:
+		case P_RLEAF:
+			++pleaf;
+			lfree += h->upper - h->lower;
+			nkeys += NEXTINDEX(h);
+			break;
+		case P_OVERFLOW:
+			++pcont;
+			break;
+		}
+		(void)mpool_put(t->bt_mp, h, 0);
+	}
+
+	/* Count the levels of the tree. */
+	for (i = P_ROOT, levels = 0 ;; ++levels) {
+		h = mpool_get(t->bt_mp, i, 0);
+		if (h->flags & (P_BLEAF|P_RLEAF)) {
+			if (levels == 0)
+				levels = 1;
+			(void)mpool_put(t->bt_mp, h, 0);
+			break;
+		}
+		i = ISSET(t, R_RECNO) ?
+		    GETRINTERNAL(h, 0)->pgno :
+		    GETBINTERNAL(h, 0)->pgno;
+		(void)mpool_put(t->bt_mp, h, 0);
+	}
+
+	(void)fprintf(stderr, "%d level%s with %ld keys",
+	    levels, levels == 1 ? "" : "s", nkeys);
+	if (ISSET(t, R_RECNO))
+		(void)fprintf(stderr, " (%ld header count)", t->bt_nrecs);
+	(void)fprintf(stderr,
+	    "\n%lu pages (leaf %ld, internal %ld, overflow %ld)\n",
+	    pinternal + pleaf + pcont, pleaf, pinternal, pcont);
+	(void)fprintf(stderr, "%ld cache hits, %ld cache misses\n",
+	    bt_cache_hit, bt_cache_miss);
+	(void)fprintf(stderr, "%ld splits (%ld root splits, %ld sort splits)\n",
+	    bt_split, bt_rootsplit, bt_sortsplit);
+	pleaf *= t->bt_psize - BTDATAOFF;
+	if (pleaf)
+		(void)fprintf(stderr,
+		    "%.0f%% leaf fill (%ld bytes used, %ld bytes free)\n",
+		    ((double)(pleaf - lfree) / pleaf) * 100,
+		    pleaf - lfree, lfree);
+	pinternal *= t->bt_psize - BTDATAOFF;
+	if (pinternal)
+		(void)fprintf(stderr,
+		    "%.0f%% internal fill (%ld bytes used, %ld bytes free\n",
+		    ((double)(pinternal - ifree) / pinternal) * 100,
+		    pinternal - ifree, ifree);
+	if (bt_pfxsaved)
+		(void)fprintf(stderr, "prefix checking removed %lu bytes.\n",
+		    bt_pfxsaved);
+}
+#endif
diff --git a/lib/libc/db/btree/bt_delete.c b/lib/libc/db/btree/bt_delete.c
new file mode 100644
index 0000000..5dba534
--- /dev/null
+++ b/lib/libc/db/btree/bt_delete.c
@@ -0,0 +1,324 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_delete.c	8.3 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <db.h>
+#include "btree.h"
+
+static int bt_bdelete __P((BTREE *, const DBT *));
+
+/*
+ * __BT_DELETE -- Delete the item(s) referenced by a key.
+ *
+ * Parameters:
+ *	dbp:	pointer to access method
+ *	key:	key to delete
+ *	flags:	R_CURSOR if deleting what the cursor references
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key not found.
+ */
+int
+__bt_delete(dbp, key, flags)
+	const DB *dbp;
+	const DBT *key;
+	u_int flags;
+{
+	BTREE *t;
+	int status;
+
+	t = dbp->internal;
+
+	/* Toss any page pinned across calls. */
+	if (t->bt_pinned != NULL) {
+		mpool_put(t->bt_mp, t->bt_pinned, 0);
+		t->bt_pinned = NULL;
+	}
+
+	if (ISSET(t, B_RDONLY)) {
+		errno = EPERM;
+		return (RET_ERROR);
+	}
+
+	switch(flags) {
+	case 0:
+		status = bt_bdelete(t, key);
+		break;
+	case R_CURSOR:
+		/*
+		 * If flags is R_CURSOR, delete the cursor; must already have
+		 * started a scan and not have already deleted the record.  For
+		 * the delete cursor bit to have been set requires that the
+		 * scan be initialized, so no reason to check.
+		 */
+		if (!ISSET(t, B_SEQINIT))
+                        goto einval;
+		status = ISSET(t, B_DELCRSR) ?
+		    RET_SPECIAL : __bt_crsrdel(t, &t->bt_bcursor);
+		break;
+	default:
+einval:		errno = EINVAL;
+		return (RET_ERROR);
+	}
+	if (status == RET_SUCCESS)
+		SET(t, B_MODIFIED);
+	return (status);
+}
+
+/*
+ * BT_BDELETE -- Delete all key/data pairs matching the specified key.
+ *
+ * Parameters:
+ *	tree:	tree
+ *	key:	key to delete
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key not found.
+ */
+static int
+bt_bdelete(t, key)
+	BTREE *t;
+	const DBT *key;
+{
+	EPG *e, save;
+	PAGE *h;
+	pgno_t cpgno, pg;
+	indx_t cindex;
+	int deleted, dirty1, dirty2, exact;
+
+	/* Find any matching record; __bt_search pins the page. */
+	if ((e = __bt_search(t, key, &exact)) == NULL)
+		return (RET_ERROR);
+	if (!exact) {
+		mpool_put(t->bt_mp, e->page, 0);
+		return (RET_SPECIAL);
+	}
+
+	/*
+	 * Delete forward, then delete backward, from the found key.  The
+	 * ordering is so that the deletions don't mess up the page refs.
+	 * The first loop deletes the key from the original page, the second
+	 * unpins the original page.  In the first loop, dirty1 is set if
+	 * the original page is modified, and dirty2 is set if any subsequent
+	 * pages are modified.  In the second loop, dirty1 starts off set if
+	 * the original page has been modified, and is set if any subsequent
+	 * pages are modified.
+	 *
+	 * If find the key referenced by the cursor, don't delete it, just
+	 * flag it for future deletion.  The cursor page number is P_INVALID
+	 * unless the sequential scan is initialized, so no reason to check.
+	 * A special case is when the already deleted cursor record was the
+	 * only record found.  If so, then the delete opertion fails as no
+	 * records were deleted.
+	 *
+	 * Cycle in place in the current page until the current record doesn't
+	 * match the key or the page is empty.  If the latter, walk forward,
+	 * skipping empty pages and repeating until a record doesn't match
+	 * the key or the end of the tree is reached.
+	 */
+	cpgno = t->bt_bcursor.pgno;
+	cindex = t->bt_bcursor.index;
+	save = *e;
+	dirty1 = 0;
+	for (h = e->page, deleted = 0;;) {
+		dirty2 = 0;
+		do {
+			if (h->pgno == cpgno && e->index == cindex) {
+				if (!ISSET(t, B_DELCRSR)) {
+					SET(t, B_DELCRSR);
+					deleted = 1;
+				}
+				++e->index;
+			} else {
+				if (__bt_dleaf(t, h, e->index)) {
+					if (h->pgno != save.page->pgno)
+						mpool_put(t->bt_mp, h, dirty2);
+					mpool_put(t->bt_mp, save.page, dirty1);
+					return (RET_ERROR);
+				}
+				if (h->pgno == save.page->pgno)
+					dirty1 = MPOOL_DIRTY;
+				else
+					dirty2 = MPOOL_DIRTY;
+				deleted = 1;
+			}
+		} while (e->index < NEXTINDEX(h) && __bt_cmp(t, key, e) == 0);
+
+		/*
+		 * Quit if didn't find a match, no next page, or first key on
+		 * the next page doesn't match.  Don't unpin the original page
+		 * unless an error occurs.
+		 */
+		if (e->index < NEXTINDEX(h))
+			break;
+		for (;;) {
+			if ((pg = h->nextpg) == P_INVALID)
+				goto done1;
+			if (h->pgno != save.page->pgno)
+				mpool_put(t->bt_mp, h, dirty2);
+			if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL) {
+				mpool_put(t->bt_mp, save.page, dirty1);
+				return (RET_ERROR);
+			}
+			if (NEXTINDEX(h) != 0) {
+				e->page = h;
+				e->index = 0;
+				break;
+			}
+		}
+
+		if (__bt_cmp(t, key, e) != 0)
+			break;
+	}
+
+	/*
+	 * Reach here with the original page and the last page referenced
+	 * pinned (they may be the same).  Release it if not the original.
+	 */
+done1:	if (h->pgno != save.page->pgno)
+		mpool_put(t->bt_mp, h, dirty2);
+
+	/*
+	 * Walk backwards from the record previous to the record returned by
+	 * __bt_search, skipping empty pages, until a record doesn't match
+	 * the key or reach the beginning of the tree.
+	 */
+	*e = save;
+	for (;;) {
+		if (e->index)
+			--e->index;
+		for (h = e->page; e->index; --e->index) {
+			if (__bt_cmp(t, key, e) != 0)
+				goto done2;
+			if (h->pgno == cpgno && e->index == cindex) {
+				if (!ISSET(t, B_DELCRSR)) {
+					SET(t, B_DELCRSR);
+					deleted = 1;
+				}
+			} else {
+				if (__bt_dleaf(t, h, e->index) == RET_ERROR) {
+					mpool_put(t->bt_mp, h, dirty1);
+					return (RET_ERROR);
+				}
+				if (h->pgno == save.page->pgno)
+					dirty1 = MPOOL_DIRTY;
+				deleted = 1;
+			}
+		}
+
+		if ((pg = h->prevpg) == P_INVALID)
+			goto done2;
+		mpool_put(t->bt_mp, h, dirty1);
+		dirty1 = 0;
+		if ((e->page = mpool_get(t->bt_mp, pg, 0)) == NULL)
+			return (RET_ERROR);
+		e->index = NEXTINDEX(e->page);
+	}
+
+	/*
+	 * Reach here with the last page that was looked at pinned.  Release
+	 * it.
+	 */
+done2:	mpool_put(t->bt_mp, h, dirty1);
+	return (deleted ? RET_SUCCESS : RET_SPECIAL);
+}
+
+/*
+ * __BT_DLEAF -- Delete a single record from a leaf page.
+ *
+ * Parameters:
+ *	t:	tree
+ *	index:	index on current page to delete
+ *
+ * Returns:
+ *	RET_SUCCESS, RET_ERROR.
+ */
+int
+__bt_dleaf(t, h, index)
+	BTREE *t;
+	PAGE *h;
+	indx_t index;
+{
+	register BLEAF *bl;
+	register indx_t cnt, *ip, offset;
+	register size_t nbytes;
+	char *from;
+	void *to;
+
+	/*
+	 * Delete a record from a btree leaf page.  Internal records are never
+	 * deleted from internal pages, regardless of the records that caused
+	 * them to be added being deleted.  Pages made empty by deletion are
+	 * not reclaimed.  They are, however, made available for reuse.
+	 *
+	 * Pack the remaining entries at the end of the page, shift the indices
+	 * down, overwriting the deleted record and its index.  If the record
+	 * uses overflow pages, make them available for reuse.
+	 */
+	to = bl = GETBLEAF(h, index);
+	if (bl->flags & P_BIGKEY && __ovfl_delete(t, bl->bytes) == RET_ERROR)
+		return (RET_ERROR);
+	if (bl->flags & P_BIGDATA &&
+	    __ovfl_delete(t, bl->bytes + bl->ksize) == RET_ERROR)
+		return (RET_ERROR);
+	nbytes = NBLEAF(bl);
+
+	/*
+	 * Compress the key/data pairs.  Compress and adjust the [BR]LEAF
+	 * offsets.  Reset the headers.
+	 */
+	from = (char *)h + h->upper;
+	memmove(from + nbytes, from, (char *)to - from);
+	h->upper += nbytes;
+
+	offset = h->linp[index];
+	for (cnt = index, ip = &h->linp[0]; cnt--; ++ip)
+		if (ip[0] < offset)
+			ip[0] += nbytes;
+	for (cnt = NEXTINDEX(h) - index; --cnt; ++ip)
+		ip[0] = ip[1] < offset ? ip[1] + nbytes : ip[1];
+	h->lower -= sizeof(indx_t);
+	return (RET_SUCCESS);
+}
diff --git a/lib/libc/db/btree/bt_get.c b/lib/libc/db/btree/bt_get.c
new file mode 100644
index 0000000..28b2d60
--- /dev/null
+++ b/lib/libc/db/btree/bt_get.c
@@ -0,0 +1,238 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_get.c	8.2 (Berkeley) 9/7/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+
+#include <db.h>
+#include "btree.h"
+
+/*
+ * __BT_GET -- Get a record from the btree.
+ *
+ * Parameters:
+ *	dbp:	pointer to access method
+ *	key:	key to find
+ *	data:	data to return
+ *	flag:	currently unused
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key not found.
+ */
+int
+__bt_get(dbp, key, data, flags)
+	const DB *dbp;
+	const DBT *key;
+	DBT *data;
+	u_int flags;
+{
+	BTREE *t;
+	EPG *e;
+	int exact, status;
+
+	t = dbp->internal;
+
+	/* Toss any page pinned across calls. */
+	if (t->bt_pinned != NULL) {
+		mpool_put(t->bt_mp, t->bt_pinned, 0);
+		t->bt_pinned = NULL;
+	}
+
+	/* Get currently doesn't take any flags. */
+	if (flags) {
+		errno = EINVAL;
+		return (RET_ERROR);
+	}
+
+	if ((e = __bt_search(t, key, &exact)) == NULL)
+		return (RET_ERROR);
+	if (!exact) {
+		mpool_put(t->bt_mp, e->page, 0);
+		return (RET_SPECIAL);
+	}
+
+	/*
+	 * A special case is if we found the record but it's flagged for
+	 * deletion.  In this case, we want to find another record with the
+	 * same key, if it exists.  Rather than look around the tree we call
+	 * __bt_first and have it redo the search, as __bt_first will not
+	 * return keys marked for deletion.  Slow, but should never happen.
+	 */
+	if (ISSET(t, B_DELCRSR) && e->page->pgno == t->bt_bcursor.pgno &&
+	    e->index == t->bt_bcursor.index) {
+		mpool_put(t->bt_mp, e->page, 0);
+		if ((e = __bt_first(t, key, &exact)) == NULL)
+			return (RET_ERROR);
+		if (!exact)
+			return (RET_SPECIAL);
+	}
+
+	status = __bt_ret(t, e, NULL, data);
+	/*
+	 * If the user is doing concurrent access, we copied the
+	 * key/data, toss the page.
+	 */
+	if (ISSET(t, B_DB_LOCK))
+		mpool_put(t->bt_mp, e->page, 0);
+	else
+		t->bt_pinned = e->page;
+	return (status);
+}
+
+/*
+ * __BT_FIRST -- Find the first entry.
+ *
+ * Parameters:
+ *	t:	the tree
+ *	key:	the key
+ *
+ * Returns:
+ *	The first entry in the tree greater than or equal to key.
+ */
+EPG *
+__bt_first(t, key, exactp)
+	BTREE *t;
+	const DBT *key;
+	int *exactp;
+{
+	register PAGE *h;
+	register EPG *e;
+	EPG save;
+	pgno_t cpgno, pg;
+	indx_t cindex;
+	int found;
+
+	/*
+	 * Find any matching record; __bt_search pins the page.  Only exact
+	 * matches are tricky, otherwise just return the location of the key
+	 * if it were to be inserted into the tree.
+	 */
+	if ((e = __bt_search(t, key, exactp)) == NULL)
+		return (NULL);
+	if (!*exactp)
+		return (e);
+
+	if (ISSET(t, B_DELCRSR)) {
+		cpgno = t->bt_bcursor.pgno;
+		cindex = t->bt_bcursor.index;
+	} else {
+		cpgno = P_INVALID;
+		cindex = 0;		/* GCC thinks it's uninitialized. */
+	}
+
+	/*
+	 * Walk backwards, skipping empty pages, as long as the entry matches
+	 * and there are keys left in the tree.  Save a copy of each match in
+	 * case we go too far.  A special case is that we don't return a match
+	 * on records that the cursor references that have already been flagged
+	 * for deletion.
+	 */
+	save = *e;
+	h = e->page;
+	found = 0;
+	do {
+		if (cpgno != h->pgno || cindex != e->index) {
+			if (save.page->pgno != e->page->pgno) {
+				mpool_put(t->bt_mp, save.page, 0);
+				save = *e;
+			} else
+				save.index = e->index;
+			found = 1;
+		}
+		/*
+		 * Make a special effort not to unpin the page the last (or
+		 * original) match was on, but also make sure it's unpinned
+		 * if an error occurs.
+		 */
+		while (e->index == 0) {
+			if (h->prevpg == P_INVALID)
+				goto done1;
+			if (h->pgno != save.page->pgno)
+				mpool_put(t->bt_mp, h, 0);
+			if ((h = mpool_get(t->bt_mp, h->prevpg, 0)) == NULL) {
+				if (h->pgno == save.page->pgno)
+					mpool_put(t->bt_mp, save.page, 0);
+				return (NULL);
+			}
+			e->page = h;
+			e->index = NEXTINDEX(h);
+		}
+		--e->index;
+	} while (__bt_cmp(t, key, e) == 0);
+
+	/*
+	 * Reach here with the last page that was looked at pinned, which may
+	 * or may not be the same as the last (or original) match page.  If
+	 * it's not useful, release it.
+	 */
+done1:	if (h->pgno != save.page->pgno)
+		mpool_put(t->bt_mp, h, 0);
+
+	/*
+	 * If still haven't found a record, the only possibility left is the
+	 * next one.  Move forward one slot, skipping empty pages and check.
+	 */
+	if (!found) {
+		h = save.page;
+		if (++save.index == NEXTINDEX(h)) {
+			do {
+				pg = h->nextpg;
+				mpool_put(t->bt_mp, h, 0);
+				if (pg == P_INVALID) {
+					*exactp = 0;
+					return (e);
+				}
+				if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+					return (NULL);
+			} while ((save.index = NEXTINDEX(h)) == 0);
+			save.page = h;
+		}
+		if (__bt_cmp(t, key, &save) != 0) {
+			*exactp = 0;
+			return (e);
+		}
+	}
+	*e = save;
+	*exactp = 1;
+	return (e);
+}
diff --git a/lib/libc/db/btree/bt_open.c b/lib/libc/db/btree/bt_open.c
new file mode 100644
index 0000000..f156745
--- /dev/null
+++ b/lib/libc/db/btree/bt_open.c
@@ -0,0 +1,440 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_open.c	8.5 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Implementation of btree access method for 4.4BSD.
+ *
+ * The design here was originally based on that of the btree access method
+ * used in the Postgres database system at UC Berkeley.  This implementation
+ * is wholly independent of the Postgres code.
+ */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <db.h>
+#include "btree.h"
+
+static int byteorder __P((void));
+static int nroot __P((BTREE *));
+static int tmp __P((void));
+
+/*
+ * __BT_OPEN -- Open a btree.
+ *
+ * Creates and fills a DB struct, and calls the routine that actually
+ * opens the btree.
+ *
+ * Parameters:
+ *	fname:	filename (NULL for in-memory trees)
+ *	flags:	open flag bits
+ *	mode:	open permission bits
+ *	b:	BTREEINFO pointer
+ *
+ * Returns:
+ *	NULL on failure, pointer to DB on success.
+ *
+ */
+DB *
+__bt_open(fname, flags, mode, openinfo, dflags)
+	const char *fname;
+	int flags, mode, dflags;
+	const BTREEINFO *openinfo;
+{
+	struct stat sb;
+	BTMETA m;
+	BTREE *t;
+	BTREEINFO b;
+	DB *dbp;
+	pgno_t ncache;
+	ssize_t nr;
+	int machine_lorder;
+
+	t = NULL;
+
+	/*
+	 * Intention is to make sure all of the user's selections are okay
+	 * here and then use them without checking.  Can't be complete, since
+	 * we don't know the right page size, lorder or flags until the backing
+	 * file is opened.  Also, the file's page size can cause the cachesize
+	 * to change.
+	 */
+	machine_lorder = byteorder();
+	if (openinfo) {
+		b = *openinfo;
+
+		/* Flags: R_DUP. */
+		if (b.flags & ~(R_DUP))
+			goto einval;
+
+		/*
+		 * Page size must be indx_t aligned and >= MINPSIZE.  Default
+		 * page size is set farther on, based on the underlying file
+		 * transfer size.
+		 */
+		if (b.psize &&
+		    (b.psize < MINPSIZE || b.psize > MAX_PAGE_OFFSET + 1 ||
+		    b.psize & sizeof(indx_t) - 1))
+			goto einval;
+
+		/* Minimum number of keys per page; absolute minimum is 2. */
+		if (b.minkeypage) {
+			if (b.minkeypage < 2)
+				goto einval;
+		} else
+			b.minkeypage = DEFMINKEYPAGE;
+
+		/* If no comparison, use default comparison and prefix. */
+		if (b.compare == NULL) {
+			b.compare = __bt_defcmp;
+			if (b.prefix == NULL)
+				b.prefix = __bt_defpfx;
+		}
+
+		if (b.lorder == 0)
+			b.lorder = machine_lorder;
+	} else {
+		b.compare = __bt_defcmp;
+		b.cachesize = 0;
+		b.flags = 0;
+		b.lorder = machine_lorder;
+		b.minkeypage = DEFMINKEYPAGE;
+		b.prefix = __bt_defpfx;
+		b.psize = 0;
+	}
+
+	/* Check for the ubiquitous PDP-11. */
+	if (b.lorder != BIG_ENDIAN && b.lorder != LITTLE_ENDIAN)
+		goto einval;
+
+	/* Allocate and initialize DB and BTREE structures. */
+	if ((t = (BTREE *)malloc(sizeof(BTREE))) == NULL)
+		goto err;
+	memset(t, 0, sizeof(BTREE));
+	t->bt_bcursor.pgno = P_INVALID;
+	t->bt_fd = -1;			/* Don't close unopened fd on error. */
+	t->bt_lorder = b.lorder;
+	t->bt_order = NOT;
+	t->bt_cmp = b.compare;
+	t->bt_pfx = b.prefix;
+	t->bt_rfd = -1;
+
+	if ((t->bt_dbp = dbp = (DB *)malloc(sizeof(DB))) == NULL)
+		goto err;
+	t->bt_flags = 0;
+	if (t->bt_lorder != machine_lorder)
+		SET(t, B_NEEDSWAP);
+
+	dbp->type = DB_BTREE;
+	dbp->internal = t;
+	dbp->close = __bt_close;
+	dbp->del = __bt_delete;
+	dbp->fd = __bt_fd;
+	dbp->get = __bt_get;
+	dbp->put = __bt_put;
+	dbp->seq = __bt_seq;
+	dbp->sync = __bt_sync;
+
+	/*
+	 * If no file name was supplied, this is an in-memory btree and we
+	 * open a backing temporary file.  Otherwise, it's a disk-based tree.
+	 */
+	if (fname) {
+		switch(flags & O_ACCMODE) {
+		case O_RDONLY:
+			SET(t, B_RDONLY);
+			break;
+		case O_RDWR:
+			break;
+		case O_WRONLY:
+		default:
+			goto einval;
+		}
+
+		if ((t->bt_fd = open(fname, flags, mode)) < 0)
+			goto err;
+
+	} else {
+		if ((flags & O_ACCMODE) != O_RDWR)
+			goto einval;
+		if ((t->bt_fd = tmp()) == -1)
+			goto err;
+		SET(t, B_INMEM);
+	}
+
+	if (fcntl(t->bt_fd, F_SETFD, 1) == -1)
+		goto err;
+
+	if (fstat(t->bt_fd, &sb))
+		goto err;
+	if (sb.st_size) {
+		nr = read(t->bt_fd, &m, sizeof(BTMETA));
+		if (nr < 0)
+			goto err;
+		if (nr != sizeof(BTMETA))
+			goto eftype;
+
+		/*
+		 * Read in the meta-data.  This can change the notion of what
+		 * the lorder, page size and flags are, and, when the page size
+		 * changes, the cachesize value can change too.  If the user
+		 * specified the wrong byte order for an existing database, we
+		 * don't bother to return an error, we just clear the NEEDSWAP
+		 * bit.
+		 */
+		if (m.m_magic == BTREEMAGIC)
+			CLR(t, B_NEEDSWAP);
+		else {
+			SET(t, B_NEEDSWAP);
+			M_32_SWAP(m.m_magic);
+			M_32_SWAP(m.m_version);
+			M_32_SWAP(m.m_psize);
+			M_32_SWAP(m.m_free);
+			M_32_SWAP(m.m_nrecs);
+			M_32_SWAP(m.m_flags);
+		}
+		if (m.m_magic != BTREEMAGIC || m.m_version != BTREEVERSION)
+			goto eftype;
+		if (m.m_psize < MINPSIZE || m.m_psize > MAX_PAGE_OFFSET + 1 ||
+		    m.m_psize & sizeof(indx_t) - 1)
+			goto eftype;
+		if (m.m_flags & ~SAVEMETA)
+			goto eftype;
+		b.psize = m.m_psize;
+		t->bt_flags |= m.m_flags;
+		t->bt_free = m.m_free;
+		t->bt_nrecs = m.m_nrecs;
+	} else {
+		/*
+		 * Set the page size to the best value for I/O to this file.
+		 * Don't overflow the page offset type.
+		 */
+		if (b.psize == 0) {
+			b.psize = sb.st_blksize;
+			if (b.psize < MINPSIZE)
+				b.psize = MINPSIZE;
+			if (b.psize > MAX_PAGE_OFFSET + 1)
+				b.psize = MAX_PAGE_OFFSET + 1;
+		}
+
+		/* Set flag if duplicates permitted. */
+		if (!(b.flags & R_DUP))
+			SET(t, B_NODUPS);
+
+		t->bt_free = P_INVALID;
+		t->bt_nrecs = 0;
+		SET(t, B_METADIRTY);
+	}
+
+	t->bt_psize = b.psize;
+
+	/* Set the cache size; must be a multiple of the page size. */
+	if (b.cachesize && b.cachesize & b.psize - 1)
+		b.cachesize += (~b.cachesize & b.psize - 1) + 1;
+	if (b.cachesize < b.psize * MINCACHE)
+		b.cachesize = b.psize * MINCACHE;
+
+	/* Calculate number of pages to cache. */
+	ncache = (b.cachesize + t->bt_psize - 1) / t->bt_psize;
+
+	/*
+	 * The btree data structure requires that at least two keys can fit on
+	 * a page, but other than that there's no fixed requirement.  The user
+	 * specified a minimum number per page, and we translated that into the
+	 * number of bytes a key/data pair can use before being placed on an
+	 * overflow page.  This calculation includes the page header, the size
+	 * of the index referencing the leaf item and the size of the leaf item
+	 * structure.  Also, don't let the user specify a minkeypage such that
+	 * a key/data pair won't fit even if both key and data are on overflow
+	 * pages.
+	 */
+	t->bt_ovflsize = (t->bt_psize - BTDATAOFF) / b.minkeypage -
+	    (sizeof(indx_t) + NBLEAFDBT(0, 0));
+	if (t->bt_ovflsize < NBLEAFDBT(NOVFLSIZE, NOVFLSIZE) + sizeof(indx_t))
+		t->bt_ovflsize =
+		    NBLEAFDBT(NOVFLSIZE, NOVFLSIZE) + sizeof(indx_t);
+
+	/* Initialize the buffer pool. */
+	if ((t->bt_mp =
+	    mpool_open(NULL, t->bt_fd, t->bt_psize, ncache)) == NULL)
+		goto err;
+	if (!ISSET(t, B_INMEM))
+		mpool_filter(t->bt_mp, __bt_pgin, __bt_pgout, t);
+
+	/* Create a root page if new tree. */
+	if (nroot(t) == RET_ERROR)
+		goto err;
+
+	/* Global flags. */
+	if (dflags & DB_LOCK)
+		SET(t, B_DB_LOCK);
+	if (dflags & DB_SHMEM)
+		SET(t, B_DB_SHMEM);
+	if (dflags & DB_TXN)
+		SET(t, B_DB_TXN);
+
+	return (dbp);
+
+einval:	errno = EINVAL;
+	goto err;
+
+eftype:	errno = EFTYPE;
+	goto err;
+
+err:	if (t) {
+		if (t->bt_dbp)
+			free(t->bt_dbp);
+		if (t->bt_fd != -1)
+			(void)close(t->bt_fd);
+		free(t);
+	}
+	return (NULL);
+}
+
+/*
+ * NROOT -- Create the root of a new tree.
+ *
+ * Parameters:
+ *	t:	tree
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+static int
+nroot(t)
+	BTREE *t;
+{
+	PAGE *meta, *root;
+	pgno_t npg;
+
+	if ((meta = mpool_get(t->bt_mp, 0, 0)) != NULL) {
+		mpool_put(t->bt_mp, meta, 0);
+		return (RET_SUCCESS);
+	}
+	if (errno != EINVAL)
+		return (RET_ERROR);
+
+	if ((meta = mpool_new(t->bt_mp, &npg)) == NULL)
+		return (RET_ERROR);
+
+	if ((root = mpool_new(t->bt_mp, &npg)) == NULL)
+		return (RET_ERROR);
+
+	if (npg != P_ROOT)
+		return (RET_ERROR);
+	root->pgno = npg;
+	root->prevpg = root->nextpg = P_INVALID;
+	root->lower = BTDATAOFF;
+	root->upper = t->bt_psize;
+	root->flags = P_BLEAF;
+	memset(meta, 0, t->bt_psize);
+	mpool_put(t->bt_mp, meta, MPOOL_DIRTY);
+	mpool_put(t->bt_mp, root, MPOOL_DIRTY);
+	return (RET_SUCCESS);
+}
+
+static int
+tmp()
+{
+	sigset_t set, oset;
+	int fd;
+	char *envtmp;
+	char path[MAXPATHLEN];
+
+	envtmp = getenv("TMPDIR");
+	(void)snprintf(path,
+	    sizeof(path), "%s/bt.XXXXXX", envtmp ? envtmp : "/tmp");
+
+	(void)sigfillset(&set);
+	(void)sigprocmask(SIG_BLOCK, &set, &oset);
+	if ((fd = mkstemp(path)) != -1)
+		(void)unlink(path);
+	(void)sigprocmask(SIG_SETMASK, &oset, NULL);
+	return(fd);
+}
+
+static int
+byteorder()
+{
+	u_int32_t x;
+	u_char *p;
+
+	x = 0x01020304;
+	p = (u_char *)&x;
+	switch (*p) {
+	case 1:
+		return (BIG_ENDIAN);
+	case 4:
+		return (LITTLE_ENDIAN);
+	default:
+		return (0);
+	}
+}
+
+int
+__bt_fd(dbp)
+        const DB *dbp;
+{
+	BTREE *t;
+
+	t = dbp->internal;
+
+	/* Toss any page pinned across calls. */
+	if (t->bt_pinned != NULL) {
+		mpool_put(t->bt_mp, t->bt_pinned, 0);
+		t->bt_pinned = NULL;
+	}
+
+	/* In-memory database can't have a file descriptor. */
+	if (ISSET(t, B_INMEM)) {
+		errno = ENOENT;
+		return (-1);
+	}
+	return (t->bt_fd);
+}
diff --git a/lib/libc/db/btree/bt_overflow.c b/lib/libc/db/btree/bt_overflow.c
new file mode 100644
index 0000000..0057a03
--- /dev/null
+++ b/lib/libc/db/btree/bt_overflow.c
@@ -0,0 +1,224 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_overflow.c	8.2 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <db.h>
+#include "btree.h"
+
+/*
+ * Big key/data code.
+ *
+ * Big key and data entries are stored on linked lists of pages.  The initial
+ * reference is byte string stored with the key or data and is the page number
+ * and size.  The actual record is stored in a chain of pages linked by the
+ * nextpg field of the PAGE header.
+ *
+ * The first page of the chain has a special property.  If the record is used
+ * by an internal page, it cannot be deleted and the P_PRESERVE bit will be set
+ * in the header.
+ *
+ * XXX
+ * A single DBT is written to each chain, so a lot of space on the last page
+ * is wasted.  This is a fairly major bug for some data sets.
+ */
+
+/*
+ * __OVFL_GET -- Get an overflow key/data item.
+ *
+ * Parameters:
+ *	t:	tree
+ *	p:	pointer to { pgno_t, size_t }
+ *	buf:	storage address
+ *	bufsz:	storage size
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+int
+__ovfl_get(t, p, ssz, buf, bufsz)
+	BTREE *t;
+	void *p;
+	size_t *ssz;
+	char **buf;
+	size_t *bufsz;
+{
+	PAGE *h;
+	pgno_t pg;
+	size_t nb, plen, sz;
+
+	memmove(&pg, p, sizeof(pgno_t));
+	memmove(&sz, (char *)p + sizeof(pgno_t), sizeof(size_t));
+	*ssz = sz;
+
+#ifdef DEBUG
+	if (pg == P_INVALID || sz == 0)
+		abort();
+#endif
+	/* Make the buffer bigger as necessary. */
+	if (*bufsz < sz) {
+		if ((*buf = (char *)realloc(*buf, sz)) == NULL)
+			return (RET_ERROR);
+		*bufsz = sz;
+	}
+
+	/*
+	 * Step through the linked list of pages, copying the data on each one
+	 * into the buffer.  Never copy more than the data's length.
+	 */
+	plen = t->bt_psize - BTDATAOFF;
+	for (p = *buf;; p = (char *)p + nb, pg = h->nextpg) {
+		if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+			return (RET_ERROR);
+
+		nb = MIN(sz, plen);
+		memmove(p, (char *)h + BTDATAOFF, nb);
+		mpool_put(t->bt_mp, h, 0);
+
+		if ((sz -= nb) == 0)
+			break;
+	}
+	return (RET_SUCCESS);
+}
+
+/*
+ * __OVFL_PUT -- Store an overflow key/data item.
+ *
+ * Parameters:
+ *	t:	tree
+ *	data:	DBT to store
+ *	pgno:	storage page number
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+int
+__ovfl_put(t, dbt, pg)
+	BTREE *t;
+	const DBT *dbt;
+	pgno_t *pg;
+{
+	PAGE *h, *last;
+	void *p;
+	pgno_t npg;
+	size_t nb, plen, sz;
+
+	/*
+	 * Allocate pages and copy the key/data record into them.  Store the
+	 * number of the first page in the chain.
+	 */
+	plen = t->bt_psize - BTDATAOFF;
+	for (last = NULL, p = dbt->data, sz = dbt->size;;
+	    p = (char *)p + plen, last = h) {
+		if ((h = __bt_new(t, &npg)) == NULL)
+			return (RET_ERROR);
+
+		h->pgno = npg;
+		h->nextpg = h->prevpg = P_INVALID;
+		h->flags = P_OVERFLOW;
+		h->lower = h->upper = 0;
+
+		nb = MIN(sz, plen);
+		memmove((char *)h + BTDATAOFF, p, nb);
+
+		if (last) {
+			last->nextpg = h->pgno;
+			mpool_put(t->bt_mp, last, MPOOL_DIRTY);
+		} else
+			*pg = h->pgno;
+
+		if ((sz -= nb) == 0) {
+			mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+			break;
+		}
+	}
+	return (RET_SUCCESS);
+}
+
+/*
+ * __OVFL_DELETE -- Delete an overflow chain.
+ *
+ * Parameters:
+ *	t:	tree
+ *	p:	pointer to { pgno_t, size_t }
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+int
+__ovfl_delete(t, p)
+	BTREE *t;
+	void *p;
+{
+	PAGE *h;
+	pgno_t pg;
+	size_t plen, sz;
+
+	memmove(&pg, p, sizeof(pgno_t));
+	memmove(&sz, (char *)p + sizeof(pgno_t), sizeof(size_t));
+
+#ifdef DEBUG
+	if (pg == P_INVALID || sz == 0)
+		abort();
+#endif
+	if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+		return (RET_ERROR);
+
+	/* Don't delete chains used by internal pages. */
+	if (h->flags & P_PRESERVE) {
+		mpool_put(t->bt_mp, h, 0);
+		return (RET_SUCCESS);
+	}
+
+	/* Step through the chain, calling the free routine for each page. */
+	for (plen = t->bt_psize - BTDATAOFF;; sz -= plen) {
+		pg = h->nextpg;
+		__bt_free(t, h);
+		if (sz <= plen)
+			break;
+		if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+			return (RET_ERROR);
+	}
+	return (RET_SUCCESS);
+}
diff --git a/lib/libc/db/btree/bt_page.c b/lib/libc/db/btree/bt_page.c
new file mode 100644
index 0000000..f71a40d
--- /dev/null
+++ b/lib/libc/db/btree/bt_page.c
@@ -0,0 +1,93 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_page.c	8.2 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <stdio.h>
+
+#include <db.h>
+#include "btree.h"
+
+/*
+ * __BT_FREE -- Put a page on the freelist.
+ *
+ * Parameters:
+ *	t:	tree
+ *	h:	page to free
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+int
+__bt_free(t, h)
+	BTREE *t;
+	PAGE *h;
+{
+	/* Insert the page at the start of the free list. */
+	h->prevpg = P_INVALID;
+	h->nextpg = t->bt_free;
+	t->bt_free = h->pgno;
+
+	/* Make sure the page gets written back. */
+	return (mpool_put(t->bt_mp, h, MPOOL_DIRTY));
+}
+
+/*
+ * __BT_NEW -- Get a new page, preferably from the freelist.
+ *
+ * Parameters:
+ *	t:	tree
+ *	npg:	storage for page number.
+ *
+ * Returns:
+ *	Pointer to a page, NULL on error.
+ */
+PAGE *
+__bt_new(t, npg)
+	BTREE *t;
+	pgno_t *npg;
+{
+	PAGE *h;
+
+	if (t->bt_free != P_INVALID &&
+	    (h = mpool_get(t->bt_mp, t->bt_free, 0)) != NULL) {
+			*npg = t->bt_free;
+			t->bt_free = h->nextpg;
+			return (h);
+	}
+	return (mpool_new(t->bt_mp, npg));
+}
diff --git a/lib/libc/db/btree/bt_put.c b/lib/libc/db/btree/bt_put.c
new file mode 100644
index 0000000..11a211b
--- /dev/null
+++ b/lib/libc/db/btree/bt_put.c
@@ -0,0 +1,318 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_put.c	8.3 (Berkeley) 9/16/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <db.h>
+#include "btree.h"
+
+static EPG *bt_fast __P((BTREE *, const DBT *, const DBT *, int *));
+
+/*
+ * __BT_PUT -- Add a btree item to the tree.
+ *
+ * Parameters:
+ *	dbp:	pointer to access method
+ *	key:	key
+ *	data:	data
+ *	flag:	R_NOOVERWRITE
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key is already in the
+ *	tree and R_NOOVERWRITE specified.
+ */
+int
+__bt_put(dbp, key, data, flags)
+	const DB *dbp;
+	DBT *key;
+	const DBT *data;
+	u_int flags;
+{
+	BTREE *t;
+	DBT tkey, tdata;
+	EPG *e;
+	PAGE *h;
+	indx_t index, nxtindex;
+	pgno_t pg;
+	size_t nbytes;
+	int dflags, exact, status;
+	char *dest, db[NOVFLSIZE], kb[NOVFLSIZE];
+
+	t = dbp->internal;
+
+	/* Toss any page pinned across calls. */
+	if (t->bt_pinned != NULL) {
+		mpool_put(t->bt_mp, t->bt_pinned, 0);
+		t->bt_pinned = NULL;
+	}
+
+	switch (flags) {
+	case R_CURSOR:
+		if (!ISSET(t, B_SEQINIT))
+			goto einval;
+		if (ISSET(t, B_DELCRSR))
+			goto einval;
+		break;
+	case 0:
+	case R_NOOVERWRITE:
+		break;
+	default:
+einval:		errno = EINVAL;
+		return (RET_ERROR);
+	}
+
+	if (ISSET(t, B_RDONLY)) {
+		errno = EPERM;
+		return (RET_ERROR);
+	}
+
+	/*
+	 * If the key/data won't fit on a page, store it on indirect pages.
+	 * Only store the key on the overflow page if it's too big after the
+	 * data is on an overflow page.
+	 *
+	 * XXX
+	 * If the insert fails later on, these pages aren't recovered.
+	 */
+	dflags = 0;
+	if (key->size + data->size > t->bt_ovflsize) {
+		if (key->size > t->bt_ovflsize) {
+storekey:		if (__ovfl_put(t, key, &pg) == RET_ERROR)
+				return (RET_ERROR);
+			tkey.data = kb;
+			tkey.size = NOVFLSIZE;
+			memmove(kb, &pg, sizeof(pgno_t));
+			memmove(kb + sizeof(pgno_t),
+			    &key->size, sizeof(size_t));
+			dflags |= P_BIGKEY;
+			key = &tkey;
+		}
+		if (key->size + data->size > t->bt_ovflsize) {
+			if (__ovfl_put(t, data, &pg) == RET_ERROR)
+				return (RET_ERROR);
+			tdata.data = db;
+			tdata.size = NOVFLSIZE;
+			memmove(db, &pg, sizeof(pgno_t));
+			memmove(db + sizeof(pgno_t),
+			    &data->size, sizeof(size_t));
+			dflags |= P_BIGDATA;
+			data = &tdata;
+		}
+		if (key->size + data->size > t->bt_ovflsize)
+			goto storekey;
+	}
+
+	/* Replace the cursor. */
+	if (flags == R_CURSOR) {
+		if ((h = mpool_get(t->bt_mp, t->bt_bcursor.pgno, 0)) == NULL)
+			return (RET_ERROR);
+		index = t->bt_bcursor.index;
+		goto delete;
+	}
+
+	/*
+	 * Find the key to delete, or, the location at which to insert.  Bt_fast
+	 * and __bt_search pin the returned page.
+	 */
+	if (t->bt_order == NOT || (e = bt_fast(t, key, data, &exact)) == NULL)
+		if ((e = __bt_search(t, key, &exact)) == NULL)
+			return (RET_ERROR);
+	h = e->page;
+	index = e->index;
+
+	/*
+	 * Add the specified key/data pair to the tree.  If an identical key
+	 * is already in the tree, and R_NOOVERWRITE is set, an error is
+	 * returned.  If R_NOOVERWRITE is not set, the key is either added (if
+	 * duplicates are permitted) or an error is returned.
+	 *
+	 * Pages are split as required.
+	 */
+	switch (flags) {
+	case R_NOOVERWRITE:
+		if (!exact)
+			break;
+		/*
+		 * One special case is if the cursor references the record and
+		 * it's been flagged for deletion.  Then, we delete the record,
+		 * leaving the cursor there -- this means that the inserted
+		 * record will not be seen in a cursor scan.
+		 */
+		if (ISSET(t, B_DELCRSR) && t->bt_bcursor.pgno == h->pgno &&
+		    t->bt_bcursor.index == index) {
+			CLR(t, B_DELCRSR);
+			goto delete;
+		}
+		mpool_put(t->bt_mp, h, 0);
+		return (RET_SPECIAL);
+	default:
+		if (!exact || !ISSET(t, B_NODUPS))
+			break;
+delete:		if (__bt_dleaf(t, h, index) == RET_ERROR) {
+			mpool_put(t->bt_mp, h, 0);
+			return (RET_ERROR);
+		}
+		break;
+	}
+
+	/*
+	 * If not enough room, or the user has put a ceiling on the number of
+	 * keys permitted in the page, split the page.  The split code will
+	 * insert the key and data and unpin the current page.  If inserting
+	 * into the offset array, shift the pointers up.
+	 */
+	nbytes = NBLEAFDBT(key->size, data->size);
+	if (h->upper - h->lower < nbytes + sizeof(indx_t)) {
+		if ((status = __bt_split(t, h, key,
+		    data, dflags, nbytes, index)) != RET_SUCCESS)
+			return (status);
+		goto success;
+	}
+
+	if (index < (nxtindex = NEXTINDEX(h)))
+		memmove(h->linp + index + 1, h->linp + index,
+		    (nxtindex - index) * sizeof(indx_t));
+	h->lower += sizeof(indx_t);
+
+	h->linp[index] = h->upper -= nbytes;
+	dest = (char *)h + h->upper;
+	WR_BLEAF(dest, key, data, dflags);
+
+	if (t->bt_order == NOT)
+		if (h->nextpg == P_INVALID) {
+			if (index == NEXTINDEX(h) - 1) {
+				t->bt_order = FORWARD;
+				t->bt_last.index = index;
+				t->bt_last.pgno = h->pgno;
+			}
+		} else if (h->prevpg == P_INVALID) {
+			if (index == 0) {
+				t->bt_order = BACK;
+				t->bt_last.index = 0;
+				t->bt_last.pgno = h->pgno;
+			}
+		}
+
+	mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+
+success:
+	if (flags == R_SETCURSOR) {
+		t->bt_bcursor.pgno = e->page->pgno;
+		t->bt_bcursor.index = e->index;
+	}
+	SET(t, B_MODIFIED);
+	return (RET_SUCCESS);
+}
+
+#ifdef STATISTICS
+u_long bt_cache_hit, bt_cache_miss;
+#endif
+
+/*
+ * BT_FAST -- Do a quick check for sorted data.
+ *
+ * Parameters:
+ *	t:	tree
+ *	key:	key to insert
+ *
+ * Returns:
+ * 	EPG for new record or NULL if not found.
+ */
+static EPG *
+bt_fast(t, key, data, exactp)
+	BTREE *t;
+	const DBT *key, *data;
+	int *exactp;
+{
+	PAGE *h;
+	size_t nbytes;
+	int cmp;
+
+	if ((h = mpool_get(t->bt_mp, t->bt_last.pgno, 0)) == NULL) {
+		t->bt_order = NOT;
+		return (NULL);
+	}
+	t->bt_cur.page = h;
+	t->bt_cur.index = t->bt_last.index;
+
+	/*
+	 * If won't fit in this page or have too many keys in this page, have
+	 * to search to get split stack.
+	 */
+	nbytes = NBLEAFDBT(key->size, data->size);
+	if (h->upper - h->lower < nbytes + sizeof(indx_t))
+		goto miss;
+
+	if (t->bt_order == FORWARD) {
+		if (t->bt_cur.page->nextpg != P_INVALID)
+			goto miss;
+		if (t->bt_cur.index != NEXTINDEX(h) - 1)
+			goto miss;
+		if ((cmp = __bt_cmp(t, key, &t->bt_cur)) < 0)
+			goto miss;
+		t->bt_last.index = cmp ? ++t->bt_cur.index : t->bt_cur.index;
+	} else {
+		if (t->bt_cur.page->prevpg != P_INVALID)
+			goto miss;
+		if (t->bt_cur.index != 0)
+			goto miss;
+		if ((cmp = __bt_cmp(t, key, &t->bt_cur)) > 0)
+			goto miss;
+		t->bt_last.index = 0;
+	}
+	*exactp = cmp == 0;
+#ifdef STATISTICS
+	++bt_cache_hit;
+#endif
+	return (&t->bt_cur);
+
+miss:
+#ifdef STATISTICS
+	++bt_cache_miss;
+#endif
+	t->bt_order = NOT;
+	mpool_put(t->bt_mp, h, 0);
+	return (NULL);
+}
diff --git a/lib/libc/db/btree/bt_search.c b/lib/libc/db/btree/bt_search.c
new file mode 100644
index 0000000..ff33421
--- /dev/null
+++ b/lib/libc/db/btree/bt_search.c
@@ -0,0 +1,235 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_search.c	8.6 (Berkeley) 3/15/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <stdio.h>
+
+#include <db.h>
+#include "btree.h"
+
+static int bt_snext __P((BTREE *, PAGE *, const DBT *, int *));
+static int bt_sprev __P((BTREE *, PAGE *, const DBT *, int *));
+
+/*
+ * __BT_SEARCH -- Search a btree for a key.
+ *
+ * Parameters:
+ *	t:	tree to search
+ *	key:	key to find
+ *	exactp:	pointer to exact match flag
+ *
+ * Returns:
+ *	The EPG for matching record, if any, or the EPG for the location
+ *	of the key, if it were inserted into the tree, is entered into
+ *	the bt_cur field of the tree.  A pointer to the field is returned.
+ */
+EPG *
+__bt_search(t, key, exactp)
+	BTREE *t;
+	const DBT *key;
+	int *exactp;
+{
+	PAGE *h;
+	indx_t base, index, lim;
+	pgno_t pg;
+	int cmp;
+
+	BT_CLR(t);
+	for (pg = P_ROOT;;) {
+		if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+			return (NULL);
+
+		/* Do a binary search on the current page. */
+		t->bt_cur.page = h;
+		for (base = 0, lim = NEXTINDEX(h); lim; lim >>= 1) {
+			t->bt_cur.index = index = base + (lim >> 1);
+			if ((cmp = __bt_cmp(t, key, &t->bt_cur)) == 0) {
+				if (h->flags & P_BLEAF) {
+					*exactp = 1;
+					return (&t->bt_cur);
+				}
+				goto next;
+			}
+			if (cmp > 0) {
+				base = index + 1;
+				--lim;
+			}
+		}
+
+		/*
+		 * If it's a leaf page, and duplicates aren't allowed, we're
+		 * done.  If duplicates are allowed, it's possible that there
+		 * were duplicate keys on duplicate pages, and they were later
+		 * deleted, so we could be on a page with no matches while
+		 * there are matches on other pages.  If we're at the start or
+		 * end of a page, check on both sides.
+		 */
+		if (h->flags & P_BLEAF) {
+			t->bt_cur.index = base;
+			*exactp = 0;
+			if (!ISSET(t, B_NODUPS)) {
+				if (base == 0 &&
+				    bt_sprev(t, h, key, exactp))
+					return (&t->bt_cur);
+				if (base == NEXTINDEX(h) &&
+				    bt_snext(t, h, key, exactp))
+					return (&t->bt_cur);
+			}
+			return (&t->bt_cur);
+		}
+
+		/*
+		 * No match found.  Base is the smallest index greater than
+		 * key and may be zero or a last + 1 index.  If it's non-zero,
+		 * decrement by one, and record the internal page which should
+		 * be a parent page for the key.  If a split later occurs, the
+		 * inserted page will be to the right of the saved page.
+		 */
+		index = base ? base - 1 : base;
+
+next:		if (__bt_push(t, h->pgno, index) == RET_ERROR)
+			return (NULL);
+		pg = GETBINTERNAL(h, index)->pgno;
+		mpool_put(t->bt_mp, h, 0);
+	}
+}
+
+/*
+ * BT_SNEXT -- Check for an exact match after the key.
+ *
+ * Parameters:
+ *	t:	tree to search
+ *	h:	current page.
+ *	key:	key to find
+ *	exactp:	pointer to exact match flag
+ *
+ * Returns:
+ *	If an exact match found.
+ */
+static int
+bt_snext(t, h, key, exactp)
+	BTREE *t;
+	PAGE *h;
+	const DBT *key;
+	int *exactp;
+{
+	EPG e;
+	PAGE *tp;
+	pgno_t pg;
+
+	/* Skip until reach the end of the tree or a key. */
+	for (pg = h->nextpg; pg != P_INVALID;) {
+		if ((tp = mpool_get(t->bt_mp, pg, 0)) == NULL) {
+			mpool_put(t->bt_mp, h, 0);
+			return (NULL);
+		}
+		if (NEXTINDEX(tp) != 0)
+			break;
+		pg = tp->prevpg;
+		mpool_put(t->bt_mp, tp, 0);
+	}
+	/*
+	 * The key is either an exact match, or not as good as
+	 * the one we already have.
+	 */
+	if (pg != P_INVALID) {
+		e.page = tp;
+		e.index = NEXTINDEX(tp) - 1;
+		if (__bt_cmp(t, key, &e) == 0) {
+			mpool_put(t->bt_mp, h, 0);
+			t->bt_cur = e;
+			*exactp = 1;
+			return (1);
+		}
+	}
+	return (0);
+}
+
+/*
+ * BT_SPREV -- Check for an exact match before the key.
+ *
+ * Parameters:
+ *	t:	tree to search
+ *	h:	current page.
+ *	key:	key to find
+ *	exactp:	pointer to exact match flag
+ *
+ * Returns:
+ *	If an exact match found.
+ */
+static int
+bt_sprev(t, h, key, exactp)
+	BTREE *t;
+	PAGE *h;
+	const DBT *key;
+	int *exactp;
+{
+	EPG e;
+	PAGE *tp;
+	pgno_t pg;
+
+	/* Skip until reach the beginning of the tree or a key. */
+	for (pg = h->prevpg; pg != P_INVALID;) {
+		if ((tp = mpool_get(t->bt_mp, pg, 0)) == NULL) {
+			mpool_put(t->bt_mp, h, 0);
+			return (NULL);
+		}
+		if (NEXTINDEX(tp) != 0)
+			break;
+		pg = tp->prevpg;
+		mpool_put(t->bt_mp, tp, 0);
+	}
+	/*
+	 * The key is either an exact match, or not as good as
+	 * the one we already have.
+	 */
+	if (pg != P_INVALID) {
+		e.page = tp;
+		e.index = NEXTINDEX(tp) - 1;
+		if (__bt_cmp(t, key, &e) == 0) {
+			mpool_put(t->bt_mp, h, 0);
+			t->bt_cur = e;
+			*exactp = 1;
+			return (1);
+		}
+	}
+	return (0);
+}
diff --git a/lib/libc/db/btree/bt_seq.c b/lib/libc/db/btree/bt_seq.c
new file mode 100644
index 0000000..182ef70
--- /dev/null
+++ b/lib/libc/db/btree/bt_seq.c
@@ -0,0 +1,380 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_seq.c	8.2 (Berkeley) 9/7/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <db.h>
+#include "btree.h"
+
+static int	 bt_seqadv __P((BTREE *, EPG *, int));
+static int	 bt_seqset __P((BTREE *, EPG *, DBT *, int));
+
+/*
+ * Sequential scan support.
+ *
+ * The tree can be scanned sequentially, starting from either end of the tree
+ * or from any specific key.  A scan request before any scanning is done is
+ * initialized as starting from the least node.
+ *
+ * Each tree has an EPGNO which has the current position of the cursor.  The
+ * cursor has to survive deletions/insertions in the tree without losing its
+ * position.  This is done by noting deletions without doing them, and then
+ * doing them when the cursor moves (or the tree is closed).
+ */
+
+/*
+ * __BT_SEQ -- Btree sequential scan interface.
+ *
+ * Parameters:
+ *	dbp:	pointer to access method
+ *	key:	key for positioning and return value
+ *	data:	data return value
+ *	flags:	R_CURSOR, R_FIRST, R_LAST, R_NEXT, R_PREV.
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS or RET_SPECIAL if there's no next key.
+ */
+int
+__bt_seq(dbp, key, data, flags)
+	const DB *dbp;
+	DBT *key, *data;
+	u_int flags;
+{
+	BTREE *t;
+	EPG e;
+	int status;
+
+	t = dbp->internal;
+
+	/* Toss any page pinned across calls. */
+	if (t->bt_pinned != NULL) {
+		mpool_put(t->bt_mp, t->bt_pinned, 0);
+		t->bt_pinned = NULL;
+	}
+
+	/*
+	 * If scan unitialized as yet, or starting at a specific record, set
+	 * the scan to a specific key.  Both bt_seqset and bt_seqadv pin the
+	 * page the cursor references if they're successful.
+	 */
+	switch(flags) {
+	case R_NEXT:
+	case R_PREV:
+		if (ISSET(t, B_SEQINIT)) {
+			status = bt_seqadv(t, &e, flags);
+			break;
+		}
+		/* FALLTHROUGH */
+	case R_CURSOR:
+	case R_FIRST:
+	case R_LAST:
+		status = bt_seqset(t, &e, key, flags);
+		break;
+	default:
+		errno = EINVAL;
+		return (RET_ERROR);
+	}
+
+	if (status == RET_SUCCESS) {
+		status = __bt_ret(t, &e, key, data);
+
+		/* Update the actual cursor. */
+		t->bt_bcursor.pgno = e.page->pgno;
+		t->bt_bcursor.index = e.index;
+
+		/*
+		 * If the user is doing concurrent access, we copied the
+		 * key/data, toss the page.
+		 */
+		if (ISSET(t, B_DB_LOCK))
+			mpool_put(t->bt_mp, e.page, 0);
+		else
+			t->bt_pinned = e.page;
+		SET(t, B_SEQINIT);
+	}
+	return (status);
+}
+
+/*
+ * BT_SEQSET -- Set the sequential scan to a specific key.
+ *
+ * Parameters:
+ *	t:	tree
+ *	ep:	storage for returned key
+ *	key:	key for initial scan position
+ *	flags:	R_CURSOR, R_FIRST, R_LAST, R_NEXT, R_PREV
+ *
+ * Side effects:
+ *	Pins the page the cursor references.
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS or RET_SPECIAL if there's no next key.
+ */
+static int
+bt_seqset(t, ep, key, flags)
+	BTREE *t;
+	EPG *ep;
+	DBT *key;
+	int flags;
+{
+	EPG *e;
+	PAGE *h;
+	pgno_t pg;
+	int exact;
+
+	/*
+	 * Delete any already deleted record that we've been saving because
+	 * the cursor pointed to it.  Since going to a specific key, should
+	 * delete any logically deleted records so they aren't found.
+	 */
+	if (ISSET(t, B_DELCRSR) && __bt_crsrdel(t, &t->bt_bcursor))
+		return (RET_ERROR);
+
+	/*
+	 * Find the first, last or specific key in the tree and point the cursor
+	 * at it.  The cursor may not be moved until a new key has been found.
+	 */
+	switch(flags) {
+	case R_CURSOR:				/* Keyed scan. */
+		/*
+		 * Find the first instance of the key or the smallest key which
+		 * is greater than or equal to the specified key.  If run out
+		 * of keys, return RET_SPECIAL.
+		 */
+		if (key->data == NULL || key->size == 0) {
+			errno = EINVAL;
+			return (RET_ERROR);
+		}
+		e = __bt_first(t, key, &exact);	/* Returns pinned page. */
+		if (e == NULL)
+			return (RET_ERROR);
+		/*
+		 * If at the end of a page, skip any empty pages and find the
+		 * next entry.
+		 */
+		if (e->index == NEXTINDEX(e->page)) {
+			h = e->page;
+			do {
+				pg = h->nextpg;
+				mpool_put(t->bt_mp, h, 0);
+				if (pg == P_INVALID)
+					return (RET_SPECIAL);
+				if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+					return (RET_ERROR);
+			} while (NEXTINDEX(h) == 0);
+			e->index = 0;
+			e->page = h;
+		}
+		*ep = *e;
+		break;
+	case R_FIRST:				/* First record. */
+	case R_NEXT:
+		/* Walk down the left-hand side of the tree. */
+		for (pg = P_ROOT;;) {
+			if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+				return (RET_ERROR);
+			if (h->flags & (P_BLEAF | P_RLEAF))
+				break;
+			pg = GETBINTERNAL(h, 0)->pgno;
+			mpool_put(t->bt_mp, h, 0);
+		}
+
+		/* Skip any empty pages. */
+		while (NEXTINDEX(h) == 0 && h->nextpg != P_INVALID) {
+			pg = h->nextpg;
+			mpool_put(t->bt_mp, h, 0);
+			if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+				return (RET_ERROR);
+		}
+
+		if (NEXTINDEX(h) == 0) {
+			mpool_put(t->bt_mp, h, 0);
+			return (RET_SPECIAL);
+		}
+
+		ep->page = h;
+		ep->index = 0;
+		break;
+	case R_LAST:				/* Last record. */
+	case R_PREV:
+		/* Walk down the right-hand side of the tree. */
+		for (pg = P_ROOT;;) {
+			if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+				return (RET_ERROR);
+			if (h->flags & (P_BLEAF | P_RLEAF))
+				break;
+			pg = GETBINTERNAL(h, NEXTINDEX(h) - 1)->pgno;
+			mpool_put(t->bt_mp, h, 0);
+		}
+
+		/* Skip any empty pages. */
+		while (NEXTINDEX(h) == 0 && h->prevpg != P_INVALID) {
+			pg = h->prevpg;
+			mpool_put(t->bt_mp, h, 0);
+			if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+				return (RET_ERROR);
+		}
+
+		if (NEXTINDEX(h) == 0) {
+			mpool_put(t->bt_mp, h, 0);
+			return (RET_SPECIAL);
+		}
+
+		ep->page = h;
+		ep->index = NEXTINDEX(h) - 1;
+		break;
+	}
+	return (RET_SUCCESS);
+}
+
+/*
+ * BT_SEQADVANCE -- Advance the sequential scan.
+ *
+ * Parameters:
+ *	t:	tree
+ *	flags:	R_NEXT, R_PREV
+ *
+ * Side effects:
+ *	Pins the page the new key/data record is on.
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS or RET_SPECIAL if there's no next key.
+ */
+static int
+bt_seqadv(t, e, flags)
+	BTREE *t;
+	EPG *e;
+	int flags;
+{
+	EPGNO *c, delc;
+	PAGE *h;
+	indx_t index;
+	pgno_t pg;
+
+	/* Save the current cursor if going to delete it. */
+	c = &t->bt_bcursor;
+	if (ISSET(t, B_DELCRSR))
+		delc = *c;
+
+	if ((h = mpool_get(t->bt_mp, c->pgno, 0)) == NULL)
+		return (RET_ERROR);
+
+	/*
+ 	 * Find the next/previous record in the tree and point the cursor at it.
+	 * The cursor may not be moved until a new key has been found.
+	 */
+	index = c->index;
+	switch(flags) {
+	case R_NEXT:			/* Next record. */
+		if (++index == NEXTINDEX(h)) {
+			do {
+				pg = h->nextpg;
+				mpool_put(t->bt_mp, h, 0);
+				if (pg == P_INVALID)
+					return (RET_SPECIAL);
+				if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+					return (RET_ERROR);
+			} while (NEXTINDEX(h) == 0);
+			index = 0;
+		}
+		break;
+	case R_PREV:			/* Previous record. */
+		if (index-- == 0) {
+			do {
+				pg = h->prevpg;
+				mpool_put(t->bt_mp, h, 0);
+				if (pg == P_INVALID)
+					return (RET_SPECIAL);
+				if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+					return (RET_ERROR);
+			} while (NEXTINDEX(h) == 0);
+			index = NEXTINDEX(h) - 1;
+		}
+		break;
+	}
+
+	e->page = h;
+	e->index = index;
+
+	/*
+	 * Delete any already deleted record that we've been saving because the
+	 * cursor pointed to it.  This could cause the new index to be shifted
+	 * down by one if the record we're deleting is on the same page and has
+	 * a larger index.
+	 */
+	if (ISSET(t, B_DELCRSR)) {
+		CLR(t, B_DELCRSR);			/* Don't try twice. */
+		if (c->pgno == delc.pgno && c->index > delc.index)
+			--c->index;
+		if (__bt_crsrdel(t, &delc))
+			return (RET_ERROR);
+	}
+	return (RET_SUCCESS);
+}
+
+/*
+ * __BT_CRSRDEL -- Delete the record referenced by the cursor.
+ *
+ * Parameters:
+ *	t:	tree
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+int
+__bt_crsrdel(t, c)
+	BTREE *t;
+	EPGNO *c;
+{
+	PAGE *h;
+	int status;
+
+	CLR(t, B_DELCRSR);			/* Don't try twice. */
+	if ((h = mpool_get(t->bt_mp, c->pgno, 0)) == NULL)
+		return (RET_ERROR);
+	status = __bt_dleaf(t, h, c->index);
+	mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+	return (status);
+}
diff --git a/lib/libc/db/btree/bt_split.c b/lib/libc/db/btree/bt_split.c
new file mode 100644
index 0000000..4a572c0
--- /dev/null
+++ b/lib/libc/db/btree/bt_split.c
@@ -0,0 +1,825 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_split.c	8.3 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <db.h>
+#include "btree.h"
+
+static int	 bt_broot __P((BTREE *, PAGE *, PAGE *, PAGE *));
+static PAGE	*bt_page
+		    __P((BTREE *, PAGE *, PAGE **, PAGE **, indx_t *, size_t));
+static int	 bt_preserve __P((BTREE *, pgno_t));
+static PAGE	*bt_psplit
+		    __P((BTREE *, PAGE *, PAGE *, PAGE *, indx_t *, size_t));
+static PAGE	*bt_root
+		    __P((BTREE *, PAGE *, PAGE **, PAGE **, indx_t *, size_t));
+static int	 bt_rroot __P((BTREE *, PAGE *, PAGE *, PAGE *));
+static recno_t	 rec_total __P((PAGE *));
+
+#ifdef STATISTICS
+u_long	bt_rootsplit, bt_split, bt_sortsplit, bt_pfxsaved;
+#endif
+
+/*
+ * __BT_SPLIT -- Split the tree.
+ *
+ * Parameters:
+ *	t:	tree
+ *	sp:	page to split
+ *	key:	key to insert
+ *	data:	data to insert
+ *	flags:	BIGKEY/BIGDATA flags
+ *	ilen:	insert length
+ *	skip:	index to leave open
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+int
+__bt_split(t, sp, key, data, flags, ilen, skip)
+	BTREE *t;
+	PAGE *sp;
+	const DBT *key, *data;
+	int flags;
+	size_t ilen;
+	indx_t skip;
+{
+	BINTERNAL *bi;
+	BLEAF *bl, *tbl;
+	DBT a, b;
+	EPGNO *parent;
+	PAGE *h, *l, *r, *lchild, *rchild;
+	indx_t nxtindex;
+	size_t n, nbytes, nksize;
+	int parentsplit;
+	char *dest;
+
+	/*
+	 * Split the page into two pages, l and r.  The split routines return
+	 * a pointer to the page into which the key should be inserted and with
+	 * skip set to the offset which should be used.  Additionally, l and r
+	 * are pinned.
+	 */
+	h = sp->pgno == P_ROOT ?
+	    bt_root(t, sp, &l, &r, &skip, ilen) :
+	    bt_page(t, sp, &l, &r, &skip, ilen);
+	if (h == NULL)
+		return (RET_ERROR);
+
+	/*
+	 * Insert the new key/data pair into the leaf page.  (Key inserts
+	 * always cause a leaf page to split first.)
+	 */
+	h->linp[skip] = h->upper -= ilen;
+	dest = (char *)h + h->upper;
+	if (ISSET(t, R_RECNO))
+		WR_RLEAF(dest, data, flags)
+	else
+		WR_BLEAF(dest, key, data, flags)
+
+	/* If the root page was split, make it look right. */
+	if (sp->pgno == P_ROOT &&
+	    (ISSET(t, R_RECNO) ?
+	    bt_rroot(t, sp, l, r) : bt_broot(t, sp, l, r)) == RET_ERROR)
+		goto err2;
+
+	/*
+	 * Now we walk the parent page stack -- a LIFO stack of the pages that
+	 * were traversed when we searched for the page that split.  Each stack
+	 * entry is a page number and a page index offset.  The offset is for
+	 * the page traversed on the search.  We've just split a page, so we
+	 * have to insert a new key into the parent page.
+	 *
+	 * If the insert into the parent page causes it to split, may have to
+	 * continue splitting all the way up the tree.  We stop if the root
+	 * splits or the page inserted into didn't have to split to hold the
+	 * new key.  Some algorithms replace the key for the old page as well
+	 * as the new page.  We don't, as there's no reason to believe that the
+	 * first key on the old page is any better than the key we have, and,
+	 * in the case of a key being placed at index 0 causing the split, the
+	 * key is unavailable.
+	 *
+	 * There are a maximum of 5 pages pinned at any time.  We keep the left
+	 * and right pages pinned while working on the parent.   The 5 are the
+	 * two children, left parent and right parent (when the parent splits)
+	 * and the root page or the overflow key page when calling bt_preserve.
+	 * This code must make sure that all pins are released other than the
+	 * root page or overflow page which is unlocked elsewhere.
+	 */
+	while ((parent = BT_POP(t)) != NULL) {
+		lchild = l;
+		rchild = r;
+
+		/* Get the parent page. */
+		if ((h = mpool_get(t->bt_mp, parent->pgno, 0)) == NULL)
+			goto err2;
+
+	 	/*
+		 * The new key goes ONE AFTER the index, because the split
+		 * was to the right.
+		 */
+		skip = parent->index + 1;
+
+		/*
+		 * Calculate the space needed on the parent page.
+		 *
+		 * Prefix trees: space hack when inserting into BINTERNAL
+		 * pages.  Retain only what's needed to distinguish between
+		 * the new entry and the LAST entry on the page to its left.
+		 * If the keys compare equal, retain the entire key.  Note,
+		 * we don't touch overflow keys, and the entire key must be
+		 * retained for the next-to-left most key on the leftmost
+		 * page of each level, or the search will fail.  Applicable
+		 * ONLY to internal pages that have leaf pages as children.
+		 * Further reduction of the key between pairs of internal
+		 * pages loses too much information.
+		 */
+		switch (rchild->flags & P_TYPE) {
+		case P_BINTERNAL:
+			bi = GETBINTERNAL(rchild, 0);
+			nbytes = NBINTERNAL(bi->ksize);
+			break;
+		case P_BLEAF:
+			bl = GETBLEAF(rchild, 0);
+			nbytes = NBINTERNAL(bl->ksize);
+			if (t->bt_pfx && !(bl->flags & P_BIGKEY) &&
+			    (h->prevpg != P_INVALID || skip > 1)) {
+				tbl = GETBLEAF(lchild, NEXTINDEX(lchild) - 1);
+				a.size = tbl->ksize;
+				a.data = tbl->bytes;
+				b.size = bl->ksize;
+				b.data = bl->bytes;
+				nksize = t->bt_pfx(&a, &b);
+				n = NBINTERNAL(nksize);
+				if (n < nbytes) {
+#ifdef STATISTICS
+					bt_pfxsaved += nbytes - n;
+#endif
+					nbytes = n;
+				} else
+					nksize = 0;
+			} else
+				nksize = 0;
+			break;
+		case P_RINTERNAL:
+		case P_RLEAF:
+			nbytes = NRINTERNAL;
+			break;
+		default:
+			abort();
+		}
+
+		/* Split the parent page if necessary or shift the indices. */
+		if (h->upper - h->lower < nbytes + sizeof(indx_t)) {
+			sp = h;
+			h = h->pgno == P_ROOT ?
+			    bt_root(t, h, &l, &r, &skip, nbytes) :
+			    bt_page(t, h, &l, &r, &skip, nbytes);
+			if (h == NULL)
+				goto err1;
+			parentsplit = 1;
+		} else {
+			if (skip < (nxtindex = NEXTINDEX(h)))
+				memmove(h->linp + skip + 1, h->linp + skip,
+				    (nxtindex - skip) * sizeof(indx_t));
+			h->lower += sizeof(indx_t);
+			parentsplit = 0;
+		}
+
+		/* Insert the key into the parent page. */
+		switch(rchild->flags & P_TYPE) {
+		case P_BINTERNAL:
+			h->linp[skip] = h->upper -= nbytes;
+			dest = (char *)h + h->linp[skip];
+			memmove(dest, bi, nbytes);
+			((BINTERNAL *)dest)->pgno = rchild->pgno;
+			break;
+		case P_BLEAF:
+			h->linp[skip] = h->upper -= nbytes;
+			dest = (char *)h + h->linp[skip];
+			WR_BINTERNAL(dest, nksize ? nksize : bl->ksize,
+			    rchild->pgno, bl->flags & P_BIGKEY);
+			memmove(dest, bl->bytes, nksize ? nksize : bl->ksize);
+			if (bl->flags & P_BIGKEY &&
+			    bt_preserve(t, *(pgno_t *)bl->bytes) == RET_ERROR)
+				goto err1;
+			break;
+		case P_RINTERNAL:
+			/*
+			 * Update the left page count.  If split
+			 * added at index 0, fix the correct page.
+			 */
+			if (skip > 0)
+				dest = (char *)h + h->linp[skip - 1];
+			else
+				dest = (char *)l + l->linp[NEXTINDEX(l) - 1];
+			((RINTERNAL *)dest)->nrecs = rec_total(lchild);
+			((RINTERNAL *)dest)->pgno = lchild->pgno;
+
+			/* Update the right page count. */
+			h->linp[skip] = h->upper -= nbytes;
+			dest = (char *)h + h->linp[skip];
+			((RINTERNAL *)dest)->nrecs = rec_total(rchild);
+			((RINTERNAL *)dest)->pgno = rchild->pgno;
+			break;
+		case P_RLEAF:
+			/*
+			 * Update the left page count.  If split
+			 * added at index 0, fix the correct page.
+			 */
+			if (skip > 0)
+				dest = (char *)h + h->linp[skip - 1];
+			else
+				dest = (char *)l + l->linp[NEXTINDEX(l) - 1];
+			((RINTERNAL *)dest)->nrecs = NEXTINDEX(lchild);
+			((RINTERNAL *)dest)->pgno = lchild->pgno;
+
+			/* Update the right page count. */
+			h->linp[skip] = h->upper -= nbytes;
+			dest = (char *)h + h->linp[skip];
+			((RINTERNAL *)dest)->nrecs = NEXTINDEX(rchild);
+			((RINTERNAL *)dest)->pgno = rchild->pgno;
+			break;
+		default:
+			abort();
+		}
+
+		/* Unpin the held pages. */
+		if (!parentsplit) {
+			mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+			break;
+		}
+
+		/* If the root page was split, make it look right. */
+		if (sp->pgno == P_ROOT &&
+		    (ISSET(t, R_RECNO) ?
+		    bt_rroot(t, sp, l, r) : bt_broot(t, sp, l, r)) == RET_ERROR)
+			goto err1;
+
+		mpool_put(t->bt_mp, lchild, MPOOL_DIRTY);
+		mpool_put(t->bt_mp, rchild, MPOOL_DIRTY);
+	}
+
+	/* Unpin the held pages. */
+	mpool_put(t->bt_mp, l, MPOOL_DIRTY);
+	mpool_put(t->bt_mp, r, MPOOL_DIRTY);
+
+	/* Clear any pages left on the stack. */
+	return (RET_SUCCESS);
+
+	/*
+	 * If something fails in the above loop we were already walking back
+	 * up the tree and the tree is now inconsistent.  Nothing much we can
+	 * do about it but release any memory we're holding.
+	 */
+err1:	mpool_put(t->bt_mp, lchild, MPOOL_DIRTY);
+	mpool_put(t->bt_mp, rchild, MPOOL_DIRTY);
+
+err2:	mpool_put(t->bt_mp, l, 0);
+	mpool_put(t->bt_mp, r, 0);
+	__dbpanic(t->bt_dbp);
+	return (RET_ERROR);
+}
+
+/*
+ * BT_PAGE -- Split a non-root page of a btree.
+ *
+ * Parameters:
+ *	t:	tree
+ *	h:	root page
+ *	lp:	pointer to left page pointer
+ *	rp:	pointer to right page pointer
+ *	skip:	pointer to index to leave open
+ *	ilen:	insert length
+ *
+ * Returns:
+ *	Pointer to page in which to insert or NULL on error.
+ */
+static PAGE *
+bt_page(t, h, lp, rp, skip, ilen)
+	BTREE *t;
+	PAGE *h, **lp, **rp;
+	indx_t *skip;
+	size_t ilen;
+{
+	PAGE *l, *r, *tp;
+	pgno_t npg;
+
+#ifdef STATISTICS
+	++bt_split;
+#endif
+	/* Put the new right page for the split into place. */
+	if ((r = __bt_new(t, &npg)) == NULL)
+		return (NULL);
+	r->pgno = npg;
+	r->lower = BTDATAOFF;
+	r->upper = t->bt_psize;
+	r->nextpg = h->nextpg;
+	r->prevpg = h->pgno;
+	r->flags = h->flags & P_TYPE;
+
+	/*
+	 * If we're splitting the last page on a level because we're appending
+	 * a key to it (skip is NEXTINDEX()), it's likely that the data is
+	 * sorted.  Adding an empty page on the side of the level is less work
+	 * and can push the fill factor much higher than normal.  If we're
+	 * wrong it's no big deal, we'll just do the split the right way next
+	 * time.  It may look like it's equally easy to do a similar hack for
+	 * reverse sorted data, that is, split the tree left, but it's not.
+	 * Don't even try.
+	 */
+	if (h->nextpg == P_INVALID && *skip == NEXTINDEX(h)) {
+#ifdef STATISTICS
+		++bt_sortsplit;
+#endif
+		h->nextpg = r->pgno;
+		r->lower = BTDATAOFF + sizeof(indx_t);
+		*skip = 0;
+		*lp = h;
+		*rp = r;
+		return (r);
+	}
+
+	/* Put the new left page for the split into place. */
+	if ((l = (PAGE *)malloc(t->bt_psize)) == NULL) {
+		mpool_put(t->bt_mp, r, 0);
+		return (NULL);
+	}
+	l->pgno = h->pgno;
+	l->nextpg = r->pgno;
+	l->prevpg = h->prevpg;
+	l->lower = BTDATAOFF;
+	l->upper = t->bt_psize;
+	l->flags = h->flags & P_TYPE;
+
+	/* Fix up the previous pointer of the page after the split page. */
+	if (h->nextpg != P_INVALID) {
+		if ((tp = mpool_get(t->bt_mp, h->nextpg, 0)) == NULL) {
+			free(l);
+			/* XXX mpool_free(t->bt_mp, r->pgno); */
+			return (NULL);
+		}
+		tp->prevpg = r->pgno;
+		mpool_put(t->bt_mp, tp, 0);
+	}
+
+	/*
+	 * Split right.  The key/data pairs aren't sorted in the btree page so
+	 * it's simpler to copy the data from the split page onto two new pages
+	 * instead of copying half the data to the right page and compacting
+	 * the left page in place.  Since the left page can't change, we have
+	 * to swap the original and the allocated left page after the split.
+	 */
+	tp = bt_psplit(t, h, l, r, skip, ilen);
+
+	/* Move the new left page onto the old left page. */
+	memmove(h, l, t->bt_psize);
+	if (tp == l)
+		tp = h;
+	free(l);
+
+	*lp = h;
+	*rp = r;
+	return (tp);
+}
+
+/*
+ * BT_ROOT -- Split the root page of a btree.
+ *
+ * Parameters:
+ *	t:	tree
+ *	h:	root page
+ *	lp:	pointer to left page pointer
+ *	rp:	pointer to right page pointer
+ *	skip:	pointer to index to leave open
+ *	ilen:	insert length
+ *
+ * Returns:
+ *	Pointer to page in which to insert or NULL on error.
+ */
+static PAGE *
+bt_root(t, h, lp, rp, skip, ilen)
+	BTREE *t;
+	PAGE *h, **lp, **rp;
+	indx_t *skip;
+	size_t ilen;
+{
+	PAGE *l, *r, *tp;
+	pgno_t lnpg, rnpg;
+
+#ifdef STATISTICS
+	++bt_split;
+	++bt_rootsplit;
+#endif
+	/* Put the new left and right pages for the split into place. */
+	if ((l = __bt_new(t, &lnpg)) == NULL ||
+	    (r = __bt_new(t, &rnpg)) == NULL)
+		return (NULL);
+	l->pgno = lnpg;
+	r->pgno = rnpg;
+	l->nextpg = r->pgno;
+	r->prevpg = l->pgno;
+	l->prevpg = r->nextpg = P_INVALID;
+	l->lower = r->lower = BTDATAOFF;
+	l->upper = r->upper = t->bt_psize;
+	l->flags = r->flags = h->flags & P_TYPE;
+
+	/* Split the root page. */
+	tp = bt_psplit(t, h, l, r, skip, ilen);
+
+	*lp = l;
+	*rp = r;
+	return (tp);
+}
+
+/*
+ * BT_RROOT -- Fix up the recno root page after it has been split.
+ *
+ * Parameters:
+ *	t:	tree
+ *	h:	root page
+ *	l:	left page
+ *	r:	right page
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+static int
+bt_rroot(t, h, l, r)
+	BTREE *t;
+	PAGE *h, *l, *r;
+{
+	char *dest;
+
+	/* Insert the left and right keys, set the header information. */
+	h->linp[0] = h->upper = t->bt_psize - NRINTERNAL;
+	dest = (char *)h + h->upper;
+	WR_RINTERNAL(dest,
+	    l->flags & P_RLEAF ? NEXTINDEX(l) : rec_total(l), l->pgno);
+
+	h->linp[1] = h->upper -= NRINTERNAL;
+	dest = (char *)h + h->upper;
+	WR_RINTERNAL(dest,
+	    r->flags & P_RLEAF ? NEXTINDEX(r) : rec_total(r), r->pgno);
+
+	h->lower = BTDATAOFF + 2 * sizeof(indx_t);
+
+	/* Unpin the root page, set to recno internal page. */
+	h->flags &= ~P_TYPE;
+	h->flags |= P_RINTERNAL;
+	mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+
+	return (RET_SUCCESS);
+}
+
+/*
+ * BT_BROOT -- Fix up the btree root page after it has been split.
+ *
+ * Parameters:
+ *	t:	tree
+ *	h:	root page
+ *	l:	left page
+ *	r:	right page
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+static int
+bt_broot(t, h, l, r)
+	BTREE *t;
+	PAGE *h, *l, *r;
+{
+	BINTERNAL *bi;
+	BLEAF *bl;
+	size_t nbytes;
+	char *dest;
+
+	/*
+	 * If the root page was a leaf page, change it into an internal page.
+	 * We copy the key we split on (but not the key's data, in the case of
+	 * a leaf page) to the new root page.
+	 *
+	 * The btree comparison code guarantees that the left-most key on any
+	 * level of the tree is never used, so it doesn't need to be filled in.
+	 */
+	nbytes = NBINTERNAL(0);
+	h->linp[0] = h->upper = t->bt_psize - nbytes;
+	dest = (char *)h + h->upper;
+	WR_BINTERNAL(dest, 0, l->pgno, 0);
+
+	switch(h->flags & P_TYPE) {
+	case P_BLEAF:
+		bl = GETBLEAF(r, 0);
+		nbytes = NBINTERNAL(bl->ksize);
+		h->linp[1] = h->upper -= nbytes;
+		dest = (char *)h + h->upper;
+		WR_BINTERNAL(dest, bl->ksize, r->pgno, 0);
+		memmove(dest, bl->bytes, bl->ksize);
+
+		/*
+		 * If the key is on an overflow page, mark the overflow chain
+		 * so it isn't deleted when the leaf copy of the key is deleted.
+		 */
+		if (bl->flags & P_BIGKEY &&
+		    bt_preserve(t, *(pgno_t *)bl->bytes) == RET_ERROR)
+			return (RET_ERROR);
+		break;
+	case P_BINTERNAL:
+		bi = GETBINTERNAL(r, 0);
+		nbytes = NBINTERNAL(bi->ksize);
+		h->linp[1] = h->upper -= nbytes;
+		dest = (char *)h + h->upper;
+		memmove(dest, bi, nbytes);
+		((BINTERNAL *)dest)->pgno = r->pgno;
+		break;
+	default:
+		abort();
+	}
+
+	/* There are two keys on the page. */
+	h->lower = BTDATAOFF + 2 * sizeof(indx_t);
+
+	/* Unpin the root page, set to btree internal page. */
+	h->flags &= ~P_TYPE;
+	h->flags |= P_BINTERNAL;
+	mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+
+	return (RET_SUCCESS);
+}
+
+/*
+ * BT_PSPLIT -- Do the real work of splitting the page.
+ *
+ * Parameters:
+ *	t:	tree
+ *	h:	page to be split
+ *	l:	page to put lower half of data
+ *	r:	page to put upper half of data
+ *	pskip:	pointer to index to leave open
+ *	ilen:	insert length
+ *
+ * Returns:
+ *	Pointer to page in which to insert.
+ */
+static PAGE *
+bt_psplit(t, h, l, r, pskip, ilen)
+	BTREE *t;
+	PAGE *h, *l, *r;
+	indx_t *pskip;
+	size_t ilen;
+{
+	BINTERNAL *bi;
+	BLEAF *bl;
+	RLEAF *rl;
+	EPGNO *c;
+	PAGE *rval;
+	void *src;
+	indx_t full, half, nxt, off, skip, top, used;
+	size_t nbytes;
+	int bigkeycnt, isbigkey;
+
+	/*
+	 * Split the data to the left and right pages.  Leave the skip index
+	 * open.  Additionally, make some effort not to split on an overflow
+	 * key.  This makes internal page processing faster and can save
+	 * space as overflow keys used by internal pages are never deleted.
+	 */
+	bigkeycnt = 0;
+	skip = *pskip;
+	full = t->bt_psize - BTDATAOFF;
+	half = full / 2;
+	used = 0;
+	for (nxt = off = 0, top = NEXTINDEX(h); nxt < top; ++off) {
+		if (skip == off) {
+			nbytes = ilen;
+			isbigkey = 0;		/* XXX: not really known. */
+		} else
+			switch (h->flags & P_TYPE) {
+			case P_BINTERNAL:
+				src = bi = GETBINTERNAL(h, nxt);
+				nbytes = NBINTERNAL(bi->ksize);
+				isbigkey = bi->flags & P_BIGKEY;
+				break;
+			case P_BLEAF:
+				src = bl = GETBLEAF(h, nxt);
+				nbytes = NBLEAF(bl);
+				isbigkey = bl->flags & P_BIGKEY;
+				break;
+			case P_RINTERNAL:
+				src = GETRINTERNAL(h, nxt);
+				nbytes = NRINTERNAL;
+				isbigkey = 0;
+				break;
+			case P_RLEAF:
+				src = rl = GETRLEAF(h, nxt);
+				nbytes = NRLEAF(rl);
+				isbigkey = 0;
+				break;
+			default:
+				abort();
+			}
+
+		/*
+		 * If the key/data pairs are substantial fractions of the max
+		 * possible size for the page, it's possible to get situations
+		 * where we decide to try and copy too much onto the left page.
+		 * Make sure that doesn't happen.
+		 */
+		if (skip <= off && used + nbytes >= full) {
+			--off;
+			break;
+		}
+
+		/* Copy the key/data pair, if not the skipped index. */
+		if (skip != off) {
+			++nxt;
+
+			l->linp[off] = l->upper -= nbytes;
+			memmove((char *)l + l->upper, src, nbytes);
+		}
+
+		used += nbytes;
+		if (used >= half) {
+			if (!isbigkey || bigkeycnt == 3)
+				break;
+			else
+				++bigkeycnt;
+		}
+	}
+
+	/*
+	 * Off is the last offset that's valid for the left page.
+	 * Nxt is the first offset to be placed on the right page.
+	 */
+	l->lower += (off + 1) * sizeof(indx_t);
+
+	/*
+	 * If splitting the page that the cursor was on, the cursor has to be
+	 * adjusted to point to the same record as before the split.  If the
+	 * cursor is at or past the skipped slot, the cursor is incremented by
+	 * one.  If the cursor is on the right page, it is decremented by the
+	 * number of records split to the left page.
+	 *
+	 * Don't bother checking for the B_SEQINIT flag, the page number will
+	 * be P_INVALID.
+	 */
+	c = &t->bt_bcursor;
+	if (c->pgno == h->pgno) {
+		if (c->index >= skip)
+			++c->index;
+		if (c->index < nxt)			/* Left page. */
+			c->pgno = l->pgno;
+		else {					/* Right page. */
+			c->pgno = r->pgno;
+			c->index -= nxt;
+		}
+	}
+
+	/*
+	 * If the skipped index was on the left page, just return that page.
+	 * Otherwise, adjust the skip index to reflect the new position on
+	 * the right page.
+	 */
+	if (skip <= off) {
+		skip = 0;
+		rval = l;
+	} else {
+		rval = r;
+		*pskip -= nxt;
+	}
+
+	for (off = 0; nxt < top; ++off) {
+		if (skip == nxt) {
+			++off;
+			skip = 0;
+		}
+		switch (h->flags & P_TYPE) {
+		case P_BINTERNAL:
+			src = bi = GETBINTERNAL(h, nxt);
+			nbytes = NBINTERNAL(bi->ksize);
+			break;
+		case P_BLEAF:
+			src = bl = GETBLEAF(h, nxt);
+			nbytes = NBLEAF(bl);
+			break;
+		case P_RINTERNAL:
+			src = GETRINTERNAL(h, nxt);
+			nbytes = NRINTERNAL;
+			break;
+		case P_RLEAF:
+			src = rl = GETRLEAF(h, nxt);
+			nbytes = NRLEAF(rl);
+			break;
+		default:
+			abort();
+		}
+		++nxt;
+		r->linp[off] = r->upper -= nbytes;
+		memmove((char *)r + r->upper, src, nbytes);
+	}
+	r->lower += off * sizeof(indx_t);
+
+	/* If the key is being appended to the page, adjust the index. */
+	if (skip == top)
+		r->lower += sizeof(indx_t);
+
+	return (rval);
+}
+
+/*
+ * BT_PRESERVE -- Mark a chain of pages as used by an internal node.
+ *
+ * Chains of indirect blocks pointed to by leaf nodes get reclaimed when the
+ * record that references them gets deleted.  Chains pointed to by internal
+ * pages never get deleted.  This routine marks a chain as pointed to by an
+ * internal page.
+ *
+ * Parameters:
+ *	t:	tree
+ *	pg:	page number of first page in the chain.
+ *
+ * Returns:
+ *	RET_SUCCESS, RET_ERROR.
+ */
+static int
+bt_preserve(t, pg)
+	BTREE *t;
+	pgno_t pg;
+{
+	PAGE *h;
+
+	if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+		return (RET_ERROR);
+	h->flags |= P_PRESERVE;
+	mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+	return (RET_SUCCESS);
+}
+
+/*
+ * REC_TOTAL -- Return the number of recno entries below a page.
+ *
+ * Parameters:
+ *	h:	page
+ *
+ * Returns:
+ *	The number of recno entries below a page.
+ *
+ * XXX
+ * These values could be set by the bt_psplit routine.  The problem is that the
+ * entry has to be popped off of the stack etc. or the values have to be passed
+ * all the way back to bt_split/bt_rroot and it's not very clean.
+ */
+static recno_t
+rec_total(h)
+	PAGE *h;
+{
+	recno_t recs;
+	indx_t nxt, top;
+
+	for (recs = 0, nxt = 0, top = NEXTINDEX(h); nxt < top; ++nxt)
+		recs += GETRINTERNAL(h, nxt)->nrecs;
+	return (recs);
+}
diff --git a/lib/libc/db/btree/bt_stack.c b/lib/libc/db/btree/bt_stack.c
new file mode 100644
index 0000000..5c7fab9
--- /dev/null
+++ b/lib/libc/db/btree/bt_stack.c
@@ -0,0 +1,92 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_stack.c	8.3 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <db.h>
+#include "btree.h"
+
+/*
+ * When a page splits, a new record has to be inserted into its parent page.
+ * This page may have to split as well, all the way up to the root.  Since
+ * parent pointers in each page would be expensive, we maintain a stack of
+ * parent pages as we descend the tree.
+ *
+ * XXX
+ * This is a concurrency problem -- if user a builds a stack, then user b
+ * splits the tree, then user a tries to split the tree, there's a new level
+ * in the tree that user a doesn't know about.
+ */
+
+/*
+ * __BT_PUSH -- Push parent page info onto the stack (LIFO).
+ *
+ * Parameters:
+ *	t:	tree
+ *	pgno:	page
+ *	index:	page index
+ *
+ * Returns:
+ * 	RET_ERROR, RET_SUCCESS
+ */
+int
+__bt_push(t, pgno, index)
+	BTREE *t;
+	pgno_t pgno;
+	indx_t index;
+{
+	if (t->bt_sp == t->bt_maxstack) {
+		t->bt_maxstack += 50;
+		if ((t->bt_stack = (EPGNO *)realloc(t->bt_stack,
+		    t->bt_maxstack * sizeof(EPGNO))) == NULL) {
+			t->bt_maxstack -= 50;
+			return (RET_ERROR);
+		}
+	}
+
+	t->bt_stack[t->bt_sp].pgno = pgno;
+	t->bt_stack[t->bt_sp].index = index;
+	++t->bt_sp;
+	return (RET_SUCCESS);
+}
diff --git a/lib/libc/db/btree/bt_utils.c b/lib/libc/db/btree/bt_utils.c
new file mode 100644
index 0000000..d2d1f73
--- /dev/null
+++ b/lib/libc/db/btree/bt_utils.c
@@ -0,0 +1,247 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_utils.c	8.4 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <db.h>
+#include "btree.h"
+
+/*
+ * __BT_RET -- Build return key/data pair as a result of search or scan.
+ *
+ * Parameters:
+ *	t:	tree
+ *	d:	LEAF to be returned to the user.
+ *	key:	user's key structure (NULL if not to be filled in)
+ *	data:	user's data structure
+ *
+ * Returns:
+ *	RET_SUCCESS, RET_ERROR.
+ */
+int
+__bt_ret(t, e, key, data)
+	BTREE *t;
+	EPG *e;
+	DBT *key, *data;
+{
+	register BLEAF *bl;
+	register void *p;
+
+	bl = GETBLEAF(e->page, e->index);
+
+	/*
+	 * We always copy big keys/data to make them contigous.  Otherwise,
+	 * we leave the page pinned and don't copy unless the user specified
+	 * concurrent access.
+	 */
+	if (bl->flags & P_BIGDATA) {
+		if (__ovfl_get(t, bl->bytes + bl->ksize,
+		    &data->size, &t->bt_dbuf, &t->bt_dbufsz))
+			return (RET_ERROR);
+		data->data = t->bt_dbuf;
+	} else if (ISSET(t, B_DB_LOCK)) {
+		/* Use +1 in case the first record retrieved is 0 length. */
+		if (bl->dsize + 1 > t->bt_dbufsz) {
+			if ((p =
+			    (void *)realloc(t->bt_dbuf, bl->dsize + 1)) == NULL)
+				return (RET_ERROR);
+			t->bt_dbuf = p;
+			t->bt_dbufsz = bl->dsize + 1;
+		}
+		memmove(t->bt_dbuf, bl->bytes + bl->ksize, bl->dsize);
+		data->size = bl->dsize;
+		data->data = t->bt_dbuf;
+	} else {
+		data->size = bl->dsize;
+		data->data = bl->bytes + bl->ksize;
+	}
+
+	if (key == NULL)
+		return (RET_SUCCESS);
+
+	if (bl->flags & P_BIGKEY) {
+		if (__ovfl_get(t, bl->bytes,
+		    &key->size, &t->bt_kbuf, &t->bt_kbufsz))
+			return (RET_ERROR);
+		key->data = t->bt_kbuf;
+	} else if (ISSET(t, B_DB_LOCK)) {
+		if (bl->ksize > t->bt_kbufsz) {
+			if ((p =
+			    (void *)realloc(t->bt_kbuf, bl->ksize)) == NULL)
+				return (RET_ERROR);
+			t->bt_kbuf = p;
+			t->bt_kbufsz = bl->ksize;
+		}
+		memmove(t->bt_kbuf, bl->bytes, bl->ksize);
+		key->size = bl->ksize;
+		key->data = t->bt_kbuf;
+	} else {
+		key->size = bl->ksize;
+		key->data = bl->bytes;
+	}
+	return (RET_SUCCESS);
+}
+
+/*
+ * __BT_CMP -- Compare a key to a given record.
+ *
+ * Parameters:
+ *	t:	tree
+ *	k1:	DBT pointer of first arg to comparison
+ *	e:	pointer to EPG for comparison
+ *
+ * Returns:
+ *	< 0 if k1 is < record
+ *	= 0 if k1 is = record
+ *	> 0 if k1 is > record
+ */
+int
+__bt_cmp(t, k1, e)
+	BTREE *t;
+	const DBT *k1;
+	EPG *e;
+{
+	BINTERNAL *bi;
+	BLEAF *bl;
+	DBT k2;
+	PAGE *h;
+	void *bigkey;
+
+	/*
+	 * The left-most key on internal pages, at any level of the tree, is
+	 * guaranteed by the following code to be less than any user key.
+	 * This saves us from having to update the leftmost key on an internal
+	 * page when the user inserts a new key in the tree smaller than
+	 * anything we've yet seen.
+	 */
+	h = e->page;
+	if (e->index == 0 && h->prevpg == P_INVALID && !(h->flags & P_BLEAF))
+		return (1);
+
+	bigkey = NULL;
+	if (h->flags & P_BLEAF) {
+		bl = GETBLEAF(h, e->index);
+		if (bl->flags & P_BIGKEY)
+			bigkey = bl->bytes;
+		else {
+			k2.data = bl->bytes;
+			k2.size = bl->ksize;
+		}
+	} else {
+		bi = GETBINTERNAL(h, e->index);
+		if (bi->flags & P_BIGKEY)
+			bigkey = bi->bytes;
+		else {
+			k2.data = bi->bytes;
+			k2.size = bi->ksize;
+		}
+	}
+
+	if (bigkey) {
+		if (__ovfl_get(t, bigkey,
+		    &k2.size, &t->bt_dbuf, &t->bt_dbufsz))
+			return (RET_ERROR);
+		k2.data = t->bt_dbuf;
+	}
+	return ((*t->bt_cmp)(k1, &k2));
+}
+
+/*
+ * __BT_DEFCMP -- Default comparison routine.
+ *
+ * Parameters:
+ *	a:	DBT #1
+ *	b: 	DBT #2
+ *
+ * Returns:
+ *	< 0 if a is < b
+ *	= 0 if a is = b
+ *	> 0 if a is > b
+ */
+int
+__bt_defcmp(a, b)
+	const DBT *a, *b;
+{
+	register size_t len;
+	register u_char *p1, *p2;
+
+	/*
+	 * XXX
+	 * If a size_t doesn't fit in an int, this routine can lose.
+	 * What we need is a integral type which is guaranteed to be
+	 * larger than a size_t, and there is no such thing.
+	 */
+	len = MIN(a->size, b->size);
+	for (p1 = a->data, p2 = b->data; len--; ++p1, ++p2)
+		if (*p1 != *p2)
+			return ((int)*p1 - (int)*p2);
+	return ((int)a->size - (int)b->size);
+}
+
+/*
+ * __BT_DEFPFX -- Default prefix routine.
+ *
+ * Parameters:
+ *	a:	DBT #1
+ *	b: 	DBT #2
+ *
+ * Returns:
+ *	Number of bytes needed to distinguish b from a.
+ */
+size_t
+__bt_defpfx(a, b)
+	const DBT *a, *b;
+{
+	register u_char *p1, *p2;
+	register size_t cnt, len;
+
+	cnt = 1;
+	len = MIN(a->size, b->size);
+	for (p1 = a->data, p2 = b->data; len--; ++p1, ++p2, ++cnt)
+		if (*p1 != *p2)
+			return (cnt);
+
+	/* a->size must be <= b->size, or they wouldn't be in this order. */
+	return (a->size < b->size ? a->size + 1 : a->size);
+}
diff --git a/lib/libc/db/btree/btree.h b/lib/libc/db/btree/btree.h
new file mode 100644
index 0000000..dd798ec
--- /dev/null
+++ b/lib/libc/db/btree/btree.h
@@ -0,0 +1,353 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)btree.h	8.5 (Berkeley) 2/21/94
+ */
+
+#include <mpool.h>
+
+#define	DEFMINKEYPAGE	(2)		/* Minimum keys per page */
+#define	MINCACHE	(5)		/* Minimum cached pages */
+#define	MINPSIZE	(512)		/* Minimum page size */
+
+/*
+ * Page 0 of a btree file contains a copy of the meta-data.  This page is also
+ * used as an out-of-band page, i.e. page pointers that point to nowhere point
+ * to page 0.  Page 1 is the root of the btree.
+ */
+#define	P_INVALID	 0		/* Invalid tree page number. */
+#define	P_META		 0		/* Tree metadata page number. */
+#define	P_ROOT		 1		/* Tree root page number. */
+
+/*
+ * There are five page layouts in the btree: btree internal pages (BINTERNAL),
+ * btree leaf pages (BLEAF), recno internal pages (RINTERNAL), recno leaf pages
+ * (RLEAF) and overflow pages.  All five page types have a page header (PAGE).
+ * This implementation requires that values within structures NOT be padded.
+ * (ANSI C permits random padding.)  If your compiler pads randomly you'll have
+ * to do some work to get this package to run.
+ */
+typedef struct _page {
+	pgno_t	pgno;			/* this page's page number */
+	pgno_t	prevpg;			/* left sibling */
+	pgno_t	nextpg;			/* right sibling */
+
+#define	P_BINTERNAL	0x01		/* btree internal page */
+#define	P_BLEAF		0x02		/* leaf page */
+#define	P_OVERFLOW	0x04		/* overflow page */
+#define	P_RINTERNAL	0x08		/* recno internal page */
+#define	P_RLEAF		0x10		/* leaf page */
+#define P_TYPE		0x1f		/* type mask */
+#define	P_PRESERVE	0x20		/* never delete this chain of pages */
+	u_int32_t flags;
+
+	indx_t	lower;			/* lower bound of free space on page */
+	indx_t	upper;			/* upper bound of free space on page */
+	indx_t	linp[1];		/* indx_t-aligned VAR. LENGTH DATA */
+} PAGE;
+
+/* First and next index. */
+#define	BTDATAOFF	(sizeof(pgno_t) + sizeof(pgno_t) + sizeof(pgno_t) + \
+			    sizeof(u_int32_t) + sizeof(indx_t) + sizeof(indx_t))
+#define	NEXTINDEX(p)	(((p)->lower - BTDATAOFF) / sizeof(indx_t))
+
+/*
+ * For pages other than overflow pages, there is an array of offsets into the
+ * rest of the page immediately following the page header.  Each offset is to
+ * an item which is unique to the type of page.  The h_lower offset is just
+ * past the last filled-in index.  The h_upper offset is the first item on the
+ * page.  Offsets are from the beginning of the page.
+ *
+ * If an item is too big to store on a single page, a flag is set and the item
+ * is a { page, size } pair such that the page is the first page of an overflow
+ * chain with size bytes of item.  Overflow pages are simply bytes without any
+ * external structure.
+ *
+ * The page number and size fields in the items are pgno_t-aligned so they can
+ * be manipulated without copying.  (This presumes that 32 bit items can be
+ * manipulated on this system.)
+ */
+#define	LALIGN(n) \
+	(((n) + sizeof(pgno_t) - 1) & ~(sizeof(pgno_t) - 1))
+#define	NOVFLSIZE	(sizeof(pgno_t) + sizeof(size_t))
+
+/*
+ * For the btree internal pages, the item is a key.  BINTERNALs are {key, pgno}
+ * pairs, such that the key compares less than or equal to all of the records
+ * on that page.  For a tree without duplicate keys, an internal page with two
+ * consecutive keys, a and b, will have all records greater than or equal to a
+ * and less than b stored on the page associated with a.  Duplicate keys are
+ * somewhat special and can cause duplicate internal and leaf page records and
+ * some minor modifications of the above rule.
+ */
+typedef struct _binternal {
+	size_t	ksize;			/* key size */
+	pgno_t	pgno;			/* page number stored on */
+#define	P_BIGDATA	0x01		/* overflow data */
+#define	P_BIGKEY	0x02		/* overflow key */
+	u_char	flags;
+	char	bytes[1];		/* data */
+} BINTERNAL;
+
+/* Get the page's BINTERNAL structure at index indx. */
+#define	GETBINTERNAL(pg, indx) \
+	((BINTERNAL *)((char *)(pg) + (pg)->linp[indx]))
+
+/* Get the number of bytes in the entry. */
+#define NBINTERNAL(len) \
+	LALIGN(sizeof(size_t) + sizeof(pgno_t) + sizeof(u_char) + (len))
+
+/* Copy a BINTERNAL entry to the page. */
+#define	WR_BINTERNAL(p, size, pgno, flags) { \
+	*(size_t *)p = size; \
+	p += sizeof(size_t); \
+	*(pgno_t *)p = pgno; \
+	p += sizeof(pgno_t); \
+	*(u_char *)p = flags; \
+	p += sizeof(u_char); \
+}
+
+/*
+ * For the recno internal pages, the item is a page number with the number of
+ * keys found on that page and below.
+ */
+typedef struct _rinternal {
+	recno_t	nrecs;			/* number of records */
+	pgno_t	pgno;			/* page number stored below */
+} RINTERNAL;
+
+/* Get the page's RINTERNAL structure at index indx. */
+#define	GETRINTERNAL(pg, indx) \
+	((RINTERNAL *)((char *)(pg) + (pg)->linp[indx]))
+
+/* Get the number of bytes in the entry. */
+#define NRINTERNAL \
+	LALIGN(sizeof(recno_t) + sizeof(pgno_t))
+
+/* Copy a RINTERAL entry to the page. */
+#define	WR_RINTERNAL(p, nrecs, pgno) { \
+	*(recno_t *)p = nrecs; \
+	p += sizeof(recno_t); \
+	*(pgno_t *)p = pgno; \
+}
+
+/* For the btree leaf pages, the item is a key and data pair. */
+typedef struct _bleaf {
+	size_t	ksize;			/* size of key */
+	size_t	dsize;			/* size of data */
+	u_char	flags;			/* P_BIGDATA, P_BIGKEY */
+	char	bytes[1];		/* data */
+} BLEAF;
+
+/* Get the page's BLEAF structure at index indx. */
+#define	GETBLEAF(pg, indx) \
+	((BLEAF *)((char *)(pg) + (pg)->linp[indx]))
+
+/* Get the number of bytes in the entry. */
+#define NBLEAF(p)	NBLEAFDBT((p)->ksize, (p)->dsize)
+
+/* Get the number of bytes in the user's key/data pair. */
+#define NBLEAFDBT(ksize, dsize) \
+	LALIGN(sizeof(size_t) + sizeof(size_t) + sizeof(u_char) + \
+	    (ksize) + (dsize))
+
+/* Copy a BLEAF entry to the page. */
+#define	WR_BLEAF(p, key, data, flags) { \
+	*(size_t *)p = key->size; \
+	p += sizeof(size_t); \
+	*(size_t *)p = data->size; \
+	p += sizeof(size_t); \
+	*(u_char *)p = flags; \
+	p += sizeof(u_char); \
+	memmove(p, key->data, key->size); \
+	p += key->size; \
+	memmove(p, data->data, data->size); \
+}
+
+/* For the recno leaf pages, the item is a data entry. */
+typedef struct _rleaf {
+	size_t	dsize;			/* size of data */
+	u_char	flags;			/* P_BIGDATA */
+	char	bytes[1];
+} RLEAF;
+
+/* Get the page's RLEAF structure at index indx. */
+#define	GETRLEAF(pg, indx) \
+	((RLEAF *)((char *)(pg) + (pg)->linp[indx]))
+
+/* Get the number of bytes in the entry. */
+#define NRLEAF(p)	NRLEAFDBT((p)->dsize)
+
+/* Get the number of bytes from the user's data. */
+#define	NRLEAFDBT(dsize) \
+	LALIGN(sizeof(size_t) + sizeof(u_char) + (dsize))
+
+/* Copy a RLEAF entry to the page. */
+#define	WR_RLEAF(p, data, flags) { \
+	*(size_t *)p = data->size; \
+	p += sizeof(size_t); \
+	*(u_char *)p = flags; \
+	p += sizeof(u_char); \
+	memmove(p, data->data, data->size); \
+}
+
+/*
+ * A record in the tree is either a pointer to a page and an index in the page
+ * or a page number and an index.  These structures are used as a cursor, stack
+ * entry and search returns as well as to pass records to other routines.
+ *
+ * One comment about searches.  Internal page searches must find the largest
+ * record less than key in the tree so that descents work.  Leaf page searches
+ * must find the smallest record greater than key so that the returned index
+ * is the record's correct position for insertion.
+ *
+ * One comment about cursors.  The cursor key is never removed from the tree,
+ * even if deleted.  This is because it is quite difficult to decide where the
+ * cursor should be when other keys have been inserted/deleted in the tree;
+ * duplicate keys make it impossible.  This scheme does require extra work
+ * though, to make sure that we don't perform an operation on a deleted key.
+ */
+typedef struct _epgno {
+	pgno_t	pgno;			/* the page number */
+	indx_t	index;			/* the index on the page */
+} EPGNO;
+
+typedef struct _epg {
+	PAGE	*page;			/* the (pinned) page */
+	indx_t	 index;			/* the index on the page */
+} EPG;
+
+/*
+ * The metadata of the tree.  The m_nrecs field is used only by the RECNO code.
+ * This is because the btree doesn't really need it and it requires that every
+ * put or delete call modify the metadata.
+ */
+typedef struct _btmeta {
+	u_int32_t	m_magic;	/* magic number */
+	u_int32_t	m_version;	/* version */
+	u_int32_t	m_psize;	/* page size */
+	u_int32_t	m_free;		/* page number of first free page */
+	u_int32_t	m_nrecs;	/* R: number of records */
+#define	SAVEMETA	(B_NODUPS | R_RECNO)
+	u_int32_t	m_flags;	/* bt_flags & SAVEMETA */
+	u_int32_t	m_unused;	/* unused */
+} BTMETA;
+
+/* The in-memory btree/recno data structure. */
+typedef struct _btree {
+	MPOOL	*bt_mp;			/* memory pool cookie */
+
+	DB	*bt_dbp;		/* pointer to enclosing DB */
+
+	EPG	bt_cur;			/* current (pinned) page */
+	PAGE	*bt_pinned;		/* page pinned across calls */
+
+	EPGNO	bt_bcursor;		/* B: btree cursor */
+	recno_t	bt_rcursor;		/* R: recno cursor (1-based) */
+
+#define	BT_POP(t)	(t->bt_sp ? t->bt_stack + --t->bt_sp : NULL)
+#define	BT_CLR(t)	(t->bt_sp = 0)
+	EPGNO	*bt_stack;		/* stack of parent pages */
+	u_int	bt_sp;			/* current stack pointer */
+	u_int	bt_maxstack;		/* largest stack */
+
+	char	*bt_kbuf;		/* key buffer */
+	size_t	bt_kbufsz;		/* key buffer size */
+	char	*bt_dbuf;		/* data buffer */
+	size_t	bt_dbufsz;		/* data buffer size */
+
+	int	bt_fd;			/* tree file descriptor */
+
+	pgno_t	bt_free;		/* next free page */
+	u_int32_t bt_psize;		/* page size */
+	indx_t	bt_ovflsize;		/* cut-off for key/data overflow */
+	int	bt_lorder;		/* byte order */
+					/* sorted order */
+	enum { NOT, BACK, FORWARD } bt_order;
+	EPGNO	bt_last;		/* last insert */
+
+					/* B: key comparison function */
+	int	(*bt_cmp) __P((const DBT *, const DBT *));
+					/* B: prefix comparison function */
+	size_t	(*bt_pfx) __P((const DBT *, const DBT *));
+					/* R: recno input function */
+	int	(*bt_irec) __P((struct _btree *, recno_t));
+
+	FILE	*bt_rfp;		/* R: record FILE pointer */
+	int	bt_rfd;			/* R: record file descriptor */
+
+	caddr_t	bt_cmap;		/* R: current point in mapped space */
+	caddr_t	bt_smap;		/* R: start of mapped space */
+	caddr_t bt_emap;		/* R: end of mapped space */
+	size_t	bt_msize;		/* R: size of mapped region. */
+
+	recno_t	bt_nrecs;		/* R: number of records */
+	size_t	bt_reclen;		/* R: fixed record length */
+	u_char	bt_bval;		/* R: delimiting byte/pad character */
+
+/*
+ * NB:
+ * B_NODUPS and R_RECNO are stored on disk, and may not be changed.
+ */
+#define	B_DELCRSR	0x00001		/* cursor has been deleted */
+#define	B_INMEM		0x00002		/* in-memory tree */
+#define	B_METADIRTY	0x00004		/* need to write metadata */
+#define	B_MODIFIED	0x00008		/* tree modified */
+#define	B_NEEDSWAP	0x00010		/* if byte order requires swapping */
+#define	B_NODUPS	0x00020		/* no duplicate keys permitted */
+#define	B_RDONLY	0x00040		/* read-only tree */
+#define	R_RECNO		0x00080		/* record oriented tree */
+#define	B_SEQINIT	0x00100		/* sequential scan initialized */
+
+#define	R_CLOSEFP	0x00200		/* opened a file pointer */
+#define	R_EOF		0x00400		/* end of input file reached. */
+#define	R_FIXLEN	0x00800		/* fixed length records */
+#define	R_MEMMAPPED	0x01000		/* memory mapped file. */
+#define	R_INMEM		0x02000		/* in-memory file */
+#define	R_MODIFIED	0x04000		/* modified file */
+#define	R_RDONLY	0x08000		/* read-only file */
+
+#define	B_DB_LOCK	0x10000		/* DB_LOCK specified. */
+#define	B_DB_SHMEM	0x20000		/* DB_SHMEM specified. */
+#define	B_DB_TXN	0x40000		/* DB_TXN specified. */
+
+	u_int32_t	bt_flags;	/* btree state */
+} BTREE;
+
+#define	SET(t, f)	((t)->bt_flags |= (f))
+#define	CLR(t, f)	((t)->bt_flags &= ~(f))
+#define	ISSET(t, f)	((t)->bt_flags & (f))
+
+#include "extern.h"
diff --git a/lib/libc/db/btree/extern.h b/lib/libc/db/btree/extern.h
new file mode 100644
index 0000000..4007bc7
--- /dev/null
+++ b/lib/libc/db/btree/extern.h
@@ -0,0 +1,70 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)extern.h	8.3 (Berkeley) 2/21/94
+ */
+
+int	 __bt_close __P((DB *));
+int	 __bt_cmp __P((BTREE *, const DBT *, EPG *));
+int	 __bt_crsrdel __P((BTREE *, EPGNO *));
+int	 __bt_defcmp __P((const DBT *, const DBT *));
+size_t	 __bt_defpfx __P((const DBT *, const DBT *));
+int	 __bt_delete __P((const DB *, const DBT *, u_int));
+int	 __bt_dleaf __P((BTREE *, PAGE *, int));
+int	 __bt_fd __P((const DB *));
+EPG	*__bt_first __P((BTREE *, const DBT *, int *));
+int	 __bt_free __P((BTREE *, PAGE *));
+int	 __bt_get __P((const DB *, const DBT *, DBT *, u_int));
+PAGE	*__bt_new __P((BTREE *, pgno_t *));
+void	 __bt_pgin __P((void *, pgno_t, void *));
+void	 __bt_pgout __P((void *, pgno_t, void *));
+int	 __bt_push __P((BTREE *, pgno_t, int));
+int	 __bt_put __P((const DB *dbp, DBT *, const DBT *, u_int));
+int	 __bt_ret __P((BTREE *, EPG *, DBT *, DBT *));
+EPG	*__bt_search __P((BTREE *, const DBT *, int *));
+int	 __bt_seq __P((const DB *, DBT *, DBT *, u_int));
+int	 __bt_split __P((BTREE *, PAGE *,
+	    const DBT *, const DBT *, int, size_t, indx_t));
+int	 __bt_sync __P((const DB *, u_int));
+
+int	 __ovfl_delete __P((BTREE *, void *));
+int	 __ovfl_get __P((BTREE *, void *, size_t *, char **, size_t *));
+int	 __ovfl_put __P((BTREE *, const DBT *, pgno_t *));
+
+#ifdef DEBUG
+void	 __bt_dnpage __P((DB *, pgno_t));
+void	 __bt_dpage __P((PAGE *));
+void	 __bt_dump __P((DB *));
+#endif
+#ifdef STATISTICS
+void	 __bt_stat __P((DB *));
+#endif
diff --git a/lib/libc/db/db/Makefile.inc b/lib/libc/db/db/Makefile.inc
new file mode 100644
index 0000000..59478ba1
--- /dev/null
+++ b/lib/libc/db/db/Makefile.inc
@@ -0,0 +1,5 @@
+#       @(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+
+.PATH: ${.CURDIR}/db/db
+
+SRCS+=	db.c
diff --git a/lib/libc/db/db/db.c b/lib/libc/db/db/db.c
new file mode 100644
index 0000000..a18f056
--- /dev/null
+++ b/lib/libc/db/db/db.c
@@ -0,0 +1,99 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)db.c	8.4 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <stdio.h>
+
+#include <db.h>
+
+DB *
+dbopen(fname, flags, mode, type, openinfo)
+	const char *fname;
+	int flags, mode;
+	DBTYPE type;
+	const void *openinfo;
+{
+
+#define	DB_FLAGS	(DB_LOCK | DB_SHMEM | DB_TXN)
+#define	USE_OPEN_FLAGS							\
+	(O_CREAT | O_EXCL | O_EXLOCK | O_NONBLOCK | O_RDONLY |		\
+	 O_RDWR | O_SHLOCK | O_TRUNC)
+
+	if ((flags & ~(USE_OPEN_FLAGS | DB_FLAGS)) == 0)
+		switch (type) {
+		case DB_BTREE:
+			return (__bt_open(fname, flags & USE_OPEN_FLAGS,
+			    mode, openinfo, flags & DB_FLAGS));
+		case DB_HASH:
+			return (__hash_open(fname, flags & USE_OPEN_FLAGS,
+			    mode, openinfo, flags & DB_FLAGS));
+		case DB_RECNO:
+			return (__rec_open(fname, flags & USE_OPEN_FLAGS,
+			    mode, openinfo, flags & DB_FLAGS));
+		}
+	errno = EINVAL;
+	return (NULL);
+}
+
+static int
+__dberr()
+{
+	return (RET_ERROR);
+}
+
+/*
+ * __DBPANIC -- Stop.
+ *
+ * Parameters:
+ *	dbp:	pointer to the DB structure.
+ */
+void
+__dbpanic(dbp)
+	DB *dbp;
+{
+	/* The only thing that can succeed is a close. */
+	dbp->del = (int (*)())__dberr;
+	dbp->fd = (int (*)())__dberr;
+	dbp->get = (int (*)())__dberr;
+	dbp->put = (int (*)())__dberr;
+	dbp->seq = (int (*)())__dberr;
+	dbp->sync = (int (*)())__dberr;
+}
diff --git a/lib/libc/db/doc/hash.usenix.ps b/lib/libc/db/doc/hash.usenix.ps
new file mode 100644
index 0000000..c884778
--- /dev/null
+++ b/lib/libc/db/doc/hash.usenix.ps
@@ -0,0 +1,12209 @@
+%!PS-Adobe-1.0
+%%Creator: utopia:margo (& Seltzer,608-13E,8072,)
+%%Title: stdin (ditroff)
+%%CreationDate: Tue Dec 11 15:06:45 1990
+%%EndComments
+%	@(#)psdit.pro	1.3 4/15/88
+% lib/psdit.pro -- prolog for psdit (ditroff) files
+% Copyright (c) 1984, 1985 Adobe Systems Incorporated. All Rights Reserved.
+% last edit: shore Sat Nov 23 20:28:03 1985
+% RCSID: $Header: psdit.pro,v 2.1 85/11/24 12:19:43 shore Rel $
+
+% Changed by Edward Wang (edward@ucbarpa.berkeley.edu) to handle graphics,
+% 17 Feb, 87.
+
+/$DITroff 140 dict def $DITroff begin
+/fontnum 1 def /fontsize 10 def /fontheight 10 def /fontslant 0 def
+/xi{0 72 11 mul translate 72 resolution div dup neg scale 0 0 moveto
+ /fontnum 1 def /fontsize 10 def /fontheight 10 def /fontslant 0 def F
+ /pagesave save def}def
+/PB{save /psv exch def currentpoint translate 
+ resolution 72 div dup neg scale 0 0 moveto}def
+/PE{psv restore}def
+/arctoobig 90 def /arctoosmall .05 def
+/m1 matrix def /m2 matrix def /m3 matrix def /oldmat matrix def
+/tan{dup sin exch cos div}def
+/point{resolution 72 div mul}def
+/dround	{transform round exch round exch itransform}def
+/xT{/devname exch def}def
+/xr{/mh exch def /my exch def /resolution exch def}def
+/xp{}def
+/xs{docsave restore end}def
+/xt{}def
+/xf{/fontname exch def /slotno exch def fontnames slotno get fontname eq not
+ {fonts slotno fontname findfont put fontnames slotno fontname put}if}def
+/xH{/fontheight exch def F}def
+/xS{/fontslant exch def F}def
+/s{/fontsize exch def /fontheight fontsize def F}def
+/f{/fontnum exch def F}def
+/F{fontheight 0 le{/fontheight fontsize def}if
+ fonts fontnum get fontsize point 0 0 fontheight point neg 0 0 m1 astore
+ fontslant 0 ne{1 0 fontslant tan 1 0 0 m2 astore m3 concatmatrix}if
+ makefont setfont .04 fontsize point mul 0 dround pop setlinewidth}def
+/X{exch currentpoint exch pop moveto show}def
+/N{3 1 roll moveto show}def
+/Y{exch currentpoint pop exch moveto show}def
+/S{show}def
+/ditpush{}def/ditpop{}def
+/AX{3 -1 roll currentpoint exch pop moveto 0 exch ashow}def
+/AN{4 2 roll moveto 0 exch ashow}def
+/AY{3 -1 roll currentpoint pop exch moveto 0 exch ashow}def
+/AS{0 exch ashow}def
+/MX{currentpoint exch pop moveto}def
+/MY{currentpoint pop exch moveto}def
+/MXY{moveto}def
+/cb{pop}def	% action on unknown char -- nothing for now
+/n{}def/w{}def
+/p{pop showpage pagesave restore /pagesave save def}def
+/Dt{/Dlinewidth exch def}def 1 Dt
+/Ds{/Ddash exch def}def -1 Ds
+/Di{/Dstipple exch def}def 1 Di
+/Dsetlinewidth{2 Dlinewidth mul setlinewidth}def
+/Dsetdash{Ddash 4 eq{[8 12]}{Ddash 16 eq{[32 36]}
+ {Ddash 20 eq{[32 12 8 12]}{[]}ifelse}ifelse}ifelse 0 setdash}def
+/Dstroke{gsave Dsetlinewidth Dsetdash 1 setlinecap stroke grestore
+ currentpoint newpath moveto}def
+/Dl{rlineto Dstroke}def
+/arcellipse{/diamv exch def /diamh exch def oldmat currentmatrix pop
+ currentpoint translate 1 diamv diamh div scale /rad diamh 2 div def
+ currentpoint exch rad add exch rad -180 180 arc oldmat setmatrix}def
+/Dc{dup arcellipse Dstroke}def
+/De{arcellipse Dstroke}def
+/Da{/endv exch def /endh exch def /centerv exch def /centerh exch def
+ /cradius centerv centerv mul centerh centerh mul add sqrt def
+ /eradius endv endv mul endh endh mul add sqrt def
+ /endang endv endh atan def
+ /startang centerv neg centerh neg atan def
+ /sweep startang endang sub dup 0 lt{360 add}if def
+ sweep arctoobig gt
+ {/midang startang sweep 2 div sub def /midrad cradius eradius add 2 div def
+  /midh midang cos midrad mul def /midv midang sin midrad mul def
+  midh neg midv neg endh endv centerh centerv midh midv Da
+  Da}
+ {sweep arctoosmall ge
+  {/controldelt 1 sweep 2 div cos sub 3 sweep 2 div sin mul div 4 mul def
+   centerv neg controldelt mul centerh controldelt mul
+   endv neg controldelt mul centerh add endh add
+   endh controldelt mul centerv add endv add
+   centerh endh add centerv endv add rcurveto Dstroke}
+  {centerh endh add centerv endv add rlineto Dstroke}
+  ifelse}
+ ifelse}def
+/Dpatterns[
+[%cf[widthbits]
+[8<0000000000000010>]
+[8<0411040040114000>]
+[8<0204081020408001>]
+[8<0000103810000000>]
+[8<6699996666999966>]
+[8<0000800100001008>]
+[8<81c36666c3810000>]
+[8<0f0e0c0800000000>]
+[8<0000000000000010>]
+[8<0411040040114000>]
+[8<0204081020408001>]
+[8<0000001038100000>]
+[8<6699996666999966>]
+[8<0000800100001008>]
+[8<81c36666c3810000>]
+[8<0f0e0c0800000000>]
+[8<0042660000246600>]
+[8<0000990000990000>]
+[8<0804020180402010>]
+[8<2418814242811824>]
+[8<6699996666999966>]
+[8<8000000008000000>]
+[8<00001c3e363e1c00>]
+[8<0000000000000000>]
+[32<00000040000000c00000004000000040000000e0000000000000000000000000>]
+[32<00000000000060000000900000002000000040000000f0000000000000000000>]
+[32<000000000000000000e0000000100000006000000010000000e0000000000000>]
+[32<00000000000000002000000060000000a0000000f00000002000000000000000>]
+[32<0000000e0000000000000000000000000000000f000000080000000e00000001>]
+[32<0000090000000600000000000000000000000000000007000000080000000e00>]
+[32<00010000000200000004000000040000000000000000000000000000000f0000>]
+[32<0900000006000000090000000600000000000000000000000000000006000000>]]
+[%ug
+[8<0000020000000000>]
+[8<0000020000002000>]
+[8<0004020000002000>]
+[8<0004020000402000>]
+[8<0004060000402000>]
+[8<0004060000406000>]
+[8<0006060000406000>]
+[8<0006060000606000>]
+[8<00060e0000606000>]
+[8<00060e000060e000>]
+[8<00070e000060e000>]
+[8<00070e000070e000>]
+[8<00070e020070e000>]
+[8<00070e020070e020>]
+[8<04070e020070e020>]
+[8<04070e024070e020>]
+[8<04070e064070e020>]
+[8<04070e064070e060>]
+[8<06070e064070e060>]
+[8<06070e066070e060>]
+[8<06070f066070e060>]
+[8<06070f066070f060>]
+[8<060f0f066070f060>]
+[8<060f0f0660f0f060>]
+[8<060f0f0760f0f060>]
+[8<060f0f0760f0f070>]
+[8<0e0f0f0760f0f070>]
+[8<0e0f0f07e0f0f070>]
+[8<0e0f0f0fe0f0f070>]
+[8<0e0f0f0fe0f0f0f0>]
+[8<0f0f0f0fe0f0f0f0>]
+[8<0f0f0f0ff0f0f0f0>]
+[8<1f0f0f0ff0f0f0f0>]
+[8<1f0f0f0ff1f0f0f0>]
+[8<1f0f0f8ff1f0f0f0>]
+[8<1f0f0f8ff1f0f0f8>]
+[8<9f0f0f8ff1f0f0f8>]
+[8<9f0f0f8ff9f0f0f8>]
+[8<9f0f0f9ff9f0f0f8>]
+[8<9f0f0f9ff9f0f0f9>]
+[8<9f8f0f9ff9f0f0f9>]
+[8<9f8f0f9ff9f8f0f9>]
+[8<9f8f1f9ff9f8f0f9>]
+[8<9f8f1f9ff9f8f1f9>]
+[8<bf8f1f9ff9f8f1f9>]
+[8<bf8f1f9ffbf8f1f9>]
+[8<bf8f1fdffbf8f1f9>]
+[8<bf8f1fdffbf8f1fd>]
+[8<ff8f1fdffbf8f1fd>]
+[8<ff8f1fdffff8f1fd>]
+[8<ff8f1ffffff8f1fd>]
+[8<ff8f1ffffff8f1ff>]
+[8<ff9f1ffffff8f1ff>]
+[8<ff9f1ffffff9f1ff>]
+[8<ff9f9ffffff9f1ff>]
+[8<ff9f9ffffff9f9ff>]
+[8<ffbf9ffffff9f9ff>]
+[8<ffbf9ffffffbf9ff>]
+[8<ffbfdffffffbf9ff>]
+[8<ffbfdffffffbfdff>]
+[8<ffffdffffffbfdff>]
+[8<ffffdffffffffdff>]
+[8<fffffffffffffdff>]
+[8<ffffffffffffffff>]]
+[%mg
+[8<8000000000000000>]
+[8<0822080080228000>]
+[8<0204081020408001>]
+[8<40e0400000000000>]
+[8<66999966>]
+[8<8001000010080000>]
+[8<81c36666c3810000>]
+[8<f0e0c08000000000>]
+[16<07c00f801f003e007c00f800f001e003c007800f001f003e007c00f801f003e0>]
+[16<1f000f8007c003e001f000f8007c003e001f800fc007e003f001f8007c003e00>]
+[8<c3c300000000c3c3>]
+[16<0040008001000200040008001000200040008000000100020004000800100020>]
+[16<0040002000100008000400020001800040002000100008000400020001000080>]
+[16<1fc03fe07df0f8f8f07de03fc01f800fc01fe03ff07df8f87df03fe01fc00f80>]
+[8<80>]
+[8<8040201000000000>]
+[8<84cc000048cc0000>]
+[8<9900009900000000>]
+[8<08040201804020100800020180002010>]
+[8<2418814242811824>]
+[8<66999966>]
+[8<8000000008000000>]
+[8<70f8d8f870000000>]
+[8<0814224180402010>]
+[8<aa00440a11a04400>]
+[8<018245aa45820100>]
+[8<221c224180808041>]
+[8<88000000>]
+[8<0855800080550800>]
+[8<2844004482440044>]
+[8<0810204080412214>]
+[8<00>]]]def
+/Dfill{
+ transform /maxy exch def /maxx exch def
+ transform /miny exch def /minx exch def
+ minx maxx gt{/minx maxx /maxx minx def def}if
+ miny maxy gt{/miny maxy /maxy miny def def}if
+ Dpatterns Dstipple 1 sub get exch 1 sub get
+ aload pop /stip exch def /stipw exch def /stiph 128 def
+ /imatrix[stipw 0 0 stiph 0 0]def
+ /tmatrix[stipw 0 0 stiph 0 0]def
+ /minx minx cvi stiph idiv stiph mul def
+ /miny miny cvi stipw idiv stipw mul def
+ gsave eoclip 0 setgray
+ miny stiph maxy{
+  tmatrix exch 5 exch put
+  minx stipw maxx{
+   tmatrix exch 4 exch put tmatrix setmatrix
+   stipw stiph true imatrix {stip} imagemask
+  }for
+ }for
+ grestore
+}def
+/Dp{Dfill Dstroke}def
+/DP{Dfill currentpoint newpath moveto}def
+end
+
+/ditstart{$DITroff begin
+ /nfonts 60 def			% NFONTS makedev/ditroff dependent!
+ /fonts[nfonts{0}repeat]def
+ /fontnames[nfonts{()}repeat]def
+/docsave save def
+}def
+
+% character outcalls
+/oc{
+ /pswid exch def /cc exch def /name exch def
+ /ditwid pswid fontsize mul resolution mul 72000 div def
+ /ditsiz fontsize resolution mul 72 div def
+ ocprocs name known{ocprocs name get exec}{name cb}ifelse
+}def
+/fractm [.65 0 0 .6 0 0] def
+/fraction{
+ /fden exch def /fnum exch def gsave /cf currentfont def
+ cf fractm makefont setfont 0 .3 dm 2 copy neg rmoveto
+ fnum show rmoveto currentfont cf setfont(\244)show setfont fden show 
+ grestore ditwid 0 rmoveto
+}def
+/oce{grestore ditwid 0 rmoveto}def
+/dm{ditsiz mul}def
+/ocprocs 50 dict def ocprocs begin
+(14){(1)(4)fraction}def
+(12){(1)(2)fraction}def
+(34){(3)(4)fraction}def
+(13){(1)(3)fraction}def
+(23){(2)(3)fraction}def
+(18){(1)(8)fraction}def
+(38){(3)(8)fraction}def
+(58){(5)(8)fraction}def
+(78){(7)(8)fraction}def
+(sr){gsave 0 .06 dm rmoveto(\326)show oce}def
+(is){gsave 0 .15 dm rmoveto(\362)show oce}def
+(->){gsave 0 .02 dm rmoveto(\256)show oce}def
+(<-){gsave 0 .02 dm rmoveto(\254)show oce}def
+(==){gsave 0 .05 dm rmoveto(\272)show oce}def
+(uc){gsave currentpoint 400 .009 dm mul add translate
+     8 -8 scale ucseal oce}def
+end
+
+% an attempt at a PostScript FONT to implement ditroff special chars
+% this will enable us to 
+%	cache the little buggers
+%	generate faster, more compact PS out of psdit
+%	confuse everyone (including myself)!
+50 dict dup begin
+/FontType 3 def
+/FontName /DIThacks def
+/FontMatrix [.001 0 0 .001 0 0] def
+/FontBBox [-260 -260 900 900] def% a lie but ...
+/Encoding 256 array def
+0 1 255{Encoding exch /.notdef put}for
+Encoding
+ dup 8#040/space put %space
+ dup 8#110/rc put %right ceil
+ dup 8#111/lt put %left  top curl
+ dup 8#112/bv put %bold vert
+ dup 8#113/lk put %left  mid curl
+ dup 8#114/lb put %left  bot curl
+ dup 8#115/rt put %right top curl
+ dup 8#116/rk put %right mid curl
+ dup 8#117/rb put %right bot curl
+ dup 8#120/rf put %right floor
+ dup 8#121/lf put %left  floor
+ dup 8#122/lc put %left  ceil
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+4065(TX)X
+
+14 p
+%%Trailer
+xt
+
+xs
diff --git a/lib/libc/db/doc/libtp.usenix.ps b/lib/libc/db/doc/libtp.usenix.ps
new file mode 100644
index 0000000..ea821a9
--- /dev/null
+++ b/lib/libc/db/doc/libtp.usenix.ps
@@ -0,0 +1,12340 @@
+%!PS-Adobe-1.0
+%%Creator: utopia:margo (& Seltzer,608-13E,8072,)
+%%Title: stdin (ditroff)
+%%CreationDate: Thu Dec 12 15:32:11 1991
+%%EndComments
+%	@(#)psdit.pro	1.3 4/15/88
+% lib/psdit.pro -- prolog for psdit (ditroff) files
+% Copyright (c) 1984, 1985 Adobe Systems Incorporated. All Rights Reserved.
+% last edit: shore Sat Nov 23 20:28:03 1985
+% RCSID: $Header: psdit.pro,v 2.1 85/11/24 12:19:43 shore Rel $
+
+% Changed by Edward Wang (edward@ucbarpa.berkeley.edu) to handle graphics,
+% 17 Feb, 87.
+
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+/PB{save /psv exch def currentpoint translate 
+ resolution 72 div dup neg scale 0 0 moveto}def
+/PE{psv restore}def
+/arctoobig 90 def /arctoosmall .05 def
+/m1 matrix def /m2 matrix def /m3 matrix def /oldmat matrix def
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+/point{resolution 72 div mul}def
+/dround	{transform round exch round exch itransform}def
+/xT{/devname exch def}def
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+/xp{}def
+/xs{docsave restore end}def
+/xt{}def
+/xf{/fontname exch def /slotno exch def fontnames slotno get fontname eq not
+ {fonts slotno fontname findfont put fontnames slotno fontname put}if}def
+/xH{/fontheight exch def F}def
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+/s{/fontsize exch def /fontheight fontsize def F}def
+/f{/fontnum exch def F}def
+/F{fontheight 0 le{/fontheight fontsize def}if
+ fonts fontnum get fontsize point 0 0 fontheight point neg 0 0 m1 astore
+ fontslant 0 ne{1 0 fontslant tan 1 0 0 m2 astore m3 concatmatrix}if
+ makefont setfont .04 fontsize point mul 0 dround pop setlinewidth}def
+/X{exch currentpoint exch pop moveto show}def
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+ sweep arctoobig gt
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+ {sweep arctoosmall ge
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+[8<00>]]]def
+/Dfill{
+ transform /maxy exch def /maxx exch def
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+ minx maxx gt{/minx maxx /maxx minx def def}if
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+ Dpatterns Dstipple 1 sub get exch 1 sub get
+ aload pop /stip exch def /stipw exch def /stiph 128 def
+ /imatrix[stipw 0 0 stiph 0 0]def
+ /tmatrix[stipw 0 0 stiph 0 0]def
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+ miny stiph maxy{
+  tmatrix exch 5 exch put
+  minx stipw maxx{
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+   stipw stiph true imatrix {stip} imagemask
+  }for
+ }for
+ grestore
+}def
+/Dp{Dfill Dstroke}def
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+
+/ditstart{$DITroff begin
+ /nfonts 60 def			% NFONTS makedev/ditroff dependent!
+ /fonts[nfonts{0}repeat]def
+ /fontnames[nfonts{()}repeat]def
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+}def
+
+% character outcalls
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+ /pswid exch def /cc exch def /name exch def
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+ ocprocs name known{ocprocs name get exec}{name cb}ifelse
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+ grestore ditwid 0 rmoveto
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+(==){gsave 0 .05 dm rmoveto(\272)show oce}def
+(uc){gsave currentpoint 400 .009 dm mul add translate
+     8 -8 scale ucseal oce}def
+end
+
+% an attempt at a PostScript FONT to implement ditroff special chars
+% this will enable us to 
+%	cache the little buggers
+%	generate faster, more compact PS out of psdit
+%	confuse everyone (including myself)!
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+ dup 8#110/rc put %right ceil
+ dup 8#111/lt put %left  top curl
+ dup 8#112/bv put %bold vert
+ dup 8#113/lk put %left  mid curl
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+ dup 8#115/rt put %right top curl
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+ dup 8#117/rb put %right bot curl
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+ dup 8#140/sq put %square
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+ dup 8#146/ob put %outline bullet
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+ pop
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+555 5532(time,)N
+742(he)X
+843(organizes)X
+1176(informal)X
+1477(Friday)X
+1711(afternoon)X
+2043(study)X
+2240(groups)X
+2482(to)X
+2568(discuss)X
+2823(recent)X
+3044(technical)X
+3358(and)X
+3498(economic)X
+3834(developments.)X
+555 5622(Among)N
+815(his)X
+928(hobbies)X
+1197(are)X
+1316(Charles)X
+1581(Dickens,)X
+1884(Red)X
+2033(Rock,)X
+2242(and)X
+2378(speaking)X
+2683(Dutch)X
+2899(to)X
+2981(anyone)X
+3233(who)X
+3391(will)X
+3535(permit)X
+3764(it.)X
+
+17 p
+%%Trailer
+xt
+
+xs
+
diff --git a/lib/libc/db/hash/Makefile.inc b/lib/libc/db/hash/Makefile.inc
new file mode 100644
index 0000000..cac96fe
--- /dev/null
+++ b/lib/libc/db/hash/Makefile.inc
@@ -0,0 +1,6 @@
+#       @(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+
+.PATH: ${.CURDIR}/db/hash
+
+SRCS+=	hash.c hash_bigkey.c hash_buf.c hash_func.c hash_log2.c \
+	hash_page.c hsearch.c ndbm.c
diff --git a/lib/libc/db/hash/README b/lib/libc/db/hash/README
new file mode 100644
index 0000000..f29ccf7
--- /dev/null
+++ b/lib/libc/db/hash/README
@@ -0,0 +1,72 @@
+#	@(#)README	8.1 (Berkeley) 6/4/93
+
+This package implements a superset of the hsearch and dbm/ndbm libraries.
+
+Test Programs:
+	All test programs which need key/data pairs expect them entered
+	with key and data on separate lines
+
+	tcreat3.c	
+		Takes 
+			bucketsize (bsize), 
+			fill factor (ffactor), and
+			initial number of elements (nelem).  
+		Creates a hash table named hashtest containing the 
+		keys/data pairs entered from standard in.
+	thash4.c
+		Takes
+			bucketsize (bsize), 
+			fill factor (ffactor), 
+			initial number of elements (nelem)
+			bytes of cache (ncached), and
+			file from which to read data  (fname)
+		Creates a table from the key/data pairs on standard in and
+		then does a read of each key/data in fname
+	tdel.c
+		Takes
+			bucketsize (bsize), and
+			fill factor (ffactor).
+			file from which to read data (fname)
+		Reads each key/data pair from fname and deletes the
+		key from the hash table hashtest
+	tseq.c
+		Reads the key/data pairs in the file hashtest and writes them
+		to standard out.
+	tread2.c
+		Takes
+			butes of cache (ncached).
+		Reads key/data pairs from standard in and looks them up
+		in the file hashtest.
+	tverify.c
+		Reads key/data pairs from standard in, looks them up
+		in the file hashtest, and verifies that the data is
+		correct.
+
+NOTES:
+
+The file search.h is provided for using the hsearch compatible interface
+on BSD systems.  On System V derived systems, search.h should appear in 
+/usr/include.
+
+The man page ../man/db.3 explains the interface to the hashing system.
+The file hash.ps is a postscript copy of a paper explaining
+the history, implementation, and performance of the hash package.
+
+"bugs" or idiosyncracies
+
+If you have a lot of overflows, it is possible to run out of overflow
+pages.  Currently, this will cause a message to be printed on stderr.
+Eventually, this will be indicated by a return error code.
+
+If you are using the ndbm interface and exit without flushing or closing the
+file, you may lose updates since the package buffers all writes.  Also,
+the db interface only creates a single database file.  To avoid overwriting
+the user's original file, the suffix ".db" is appended to the file name
+passed to dbm_open.  Additionally, if your code "knows" about the historic
+.dir and .pag files, it will break.  
+
+There is a fundamental difference between this package and the old hsearch.
+Hsearch requires the user to maintain the keys and data in the application's
+allocated memory while hash takes care of all storage management.  The down
+side is that the byte strings passed in the ENTRY structure must be null
+terminated (both the keys and the data).
diff --git a/lib/libc/db/hash/extern.h b/lib/libc/db/hash/extern.h
new file mode 100644
index 0000000..b7ef37a
--- /dev/null
+++ b/lib/libc/db/hash/extern.h
@@ -0,0 +1,65 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)extern.h	8.2 (Berkeley) 2/21/94
+ */
+
+BUFHEAD	*__add_ovflpage __P((HTAB *, BUFHEAD *));
+int	 __addel __P((HTAB *, BUFHEAD *, const DBT *, const DBT *));
+int	 __big_delete __P((HTAB *, BUFHEAD *));
+int	 __big_insert __P((HTAB *, BUFHEAD *, const DBT *, const DBT *));
+int	 __big_keydata __P((HTAB *, BUFHEAD *, DBT *, DBT *, int));
+int	 __big_return __P((HTAB *, BUFHEAD *, int, DBT *, int));
+int	 __big_split __P((HTAB *, BUFHEAD *, BUFHEAD *, BUFHEAD *,
+		int, u_int, SPLIT_RETURN *));
+int	 __buf_free __P((HTAB *, int, int));
+void	 __buf_init __P((HTAB *, int));
+u_int	 __call_hash __P((HTAB *, char *, int));
+int	 __delpair __P((HTAB *, BUFHEAD *, int));
+int	 __expand_table __P((HTAB *));
+int	 __find_bigpair __P((HTAB *, BUFHEAD *, int, char *, int));
+u_short	 __find_last_page __P((HTAB *, BUFHEAD **));
+void	 __free_ovflpage __P((HTAB *, BUFHEAD *));
+BUFHEAD	*__get_buf __P((HTAB *, u_int, BUFHEAD *, int));
+int	 __get_page __P((HTAB *, char *, u_int, int, int, int));
+int	 __init_bitmap __P((HTAB *, int, int, int));
+u_int	 __log2 __P((u_int));
+int	 __put_page __P((HTAB *, char *, u_int, int, int));
+void	 __reclaim_buf __P((HTAB *, BUFHEAD *));
+int	 __split_page __P((HTAB *, u_int, u_int));
+
+/* Default hash routine. */
+extern u_int32_t (*__default_hash) __P((const void *, size_t));
+
+#ifdef HASH_STATISTICS
+extern long hash_accesses, hash_collisions, hash_expansions, hash_overflows;
+#endif
diff --git a/lib/libc/db/hash/hash.c b/lib/libc/db/hash/hash.c
new file mode 100644
index 0000000..6a23f3d
--- /dev/null
+++ b/lib/libc/db/hash/hash.c
@@ -0,0 +1,994 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)hash.c	8.7 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#ifdef DEBUG
+#include <assert.h>
+#endif
+
+#include <db.h>
+#include "hash.h"
+#include "page.h"
+#include "extern.h"
+
+static int   alloc_segs __P((HTAB *, int));
+static int   flush_meta __P((HTAB *));
+static int   hash_access __P((HTAB *, ACTION, DBT *, DBT *));
+static int   hash_close __P((DB *));
+static int   hash_delete __P((const DB *, const DBT *, u_int));
+static int   hash_fd __P((const DB *));
+static int   hash_get __P((const DB *, const DBT *, DBT *, u_int));
+static int   hash_put __P((const DB *, DBT *, const DBT *, u_int));
+static void *hash_realloc __P((SEGMENT **, int, int));
+static int   hash_seq __P((const DB *, DBT *, DBT *, u_int));
+static int   hash_sync __P((const DB *, u_int));
+static int   hdestroy __P((HTAB *));
+static HTAB *init_hash __P((HTAB *, const char *, HASHINFO *));
+static int   init_htab __P((HTAB *, int));
+#if BYTE_ORDER == LITTLE_ENDIAN
+static void  swap_header __P((HTAB *));
+static void  swap_header_copy __P((HASHHDR *, HASHHDR *));
+#endif
+
+/* Fast arithmetic, relying on powers of 2, */
+#define MOD(x, y)		((x) & ((y) - 1))
+
+#define RETURN_ERROR(ERR, LOC)	{ save_errno = ERR; goto LOC; }
+
+/* Return values */
+#define	SUCCESS	 (0)
+#define	ERROR	(-1)
+#define	ABNORMAL (1)
+
+#ifdef HASH_STATISTICS
+long hash_accesses, hash_collisions, hash_expansions, hash_overflows;
+#endif
+
+/************************** INTERFACE ROUTINES ***************************/
+/* OPEN/CLOSE */
+
+extern DB *
+__hash_open(file, flags, mode, info, dflags)
+	const char *file;
+	int flags, mode, dflags;
+	const HASHINFO *info;	/* Special directives for create */
+{
+	HTAB *hashp;
+	struct stat statbuf;
+	DB *dbp;
+	int bpages, hdrsize, new_table, nsegs, save_errno;
+
+	if ((flags & O_ACCMODE) == O_WRONLY) {
+		errno = EINVAL;
+		return (NULL);
+	}
+
+	if (!(hashp = (HTAB *)calloc(1, sizeof(HTAB))))
+		return (NULL);
+	hashp->fp = -1;
+
+	/*
+	 * Even if user wants write only, we need to be able to read
+	 * the actual file, so we need to open it read/write. But, the
+	 * field in the hashp structure needs to be accurate so that
+	 * we can check accesses.
+	 */
+	hashp->flags = flags;
+
+	new_table = 0;
+	if (!file || (flags & O_TRUNC) ||
+	    (stat(file, &statbuf) && (errno == ENOENT))) {
+		if (errno == ENOENT)
+			errno = 0; /* Just in case someone looks at errno */
+		new_table = 1;
+	}
+	if (file) {
+		if ((hashp->fp = open(file, flags, mode)) == -1)
+			RETURN_ERROR(errno, error0);
+		(void)fcntl(hashp->fp, F_SETFD, 1);
+	}
+	if (new_table) {
+		if (!(hashp = init_hash(hashp, file, (HASHINFO *)info)))
+			RETURN_ERROR(errno, error1);
+	} else {
+		/* Table already exists */
+		if (info && info->hash)
+			hashp->hash = info->hash;
+		else
+			hashp->hash = __default_hash;
+
+		hdrsize = read(hashp->fp, &hashp->hdr, sizeof(HASHHDR));
+#if BYTE_ORDER == LITTLE_ENDIAN
+		swap_header(hashp);
+#endif
+		if (hdrsize == -1)
+			RETURN_ERROR(errno, error1);
+		if (hdrsize != sizeof(HASHHDR))
+			RETURN_ERROR(EFTYPE, error1);
+		/* Verify file type, versions and hash function */
+		if (hashp->MAGIC != HASHMAGIC)
+			RETURN_ERROR(EFTYPE, error1);
+#define	OLDHASHVERSION	1
+		if (hashp->VERSION != HASHVERSION &&
+		    hashp->VERSION != OLDHASHVERSION)
+			RETURN_ERROR(EFTYPE, error1);
+		if (hashp->hash(CHARKEY, sizeof(CHARKEY)) != hashp->H_CHARKEY)
+			RETURN_ERROR(EFTYPE, error1);
+		/*
+		 * Figure out how many segments we need.  Max_Bucket is the
+		 * maximum bucket number, so the number of buckets is
+		 * max_bucket + 1.
+		 */
+		nsegs = (hashp->MAX_BUCKET + 1 + hashp->SGSIZE - 1) /
+			 hashp->SGSIZE;
+		hashp->nsegs = 0;
+		if (alloc_segs(hashp, nsegs))
+			/*
+			 * If alloc_segs fails, table will have been destroyed
+			 * and errno will have been set.
+			 */
+			return (NULL);
+		/* Read in bitmaps */
+		bpages = (hashp->SPARES[hashp->OVFL_POINT] +
+		    (hashp->BSIZE << BYTE_SHIFT) - 1) >>
+		    (hashp->BSHIFT + BYTE_SHIFT);
+
+		hashp->nmaps = bpages;
+		(void)memset(&hashp->mapp[0], 0, bpages * sizeof(u_long *));
+	}
+
+	/* Initialize Buffer Manager */
+	if (info && info->cachesize)
+		__buf_init(hashp, info->cachesize);
+	else
+		__buf_init(hashp, DEF_BUFSIZE);
+
+	hashp->new_file = new_table;
+	hashp->save_file = file && (hashp->flags & O_RDWR);
+	hashp->cbucket = -1;
+	if (!(dbp = (DB *)malloc(sizeof(DB)))) {
+		save_errno = errno;
+		hdestroy(hashp);
+		errno = save_errno;
+		return (NULL);
+	}
+	dbp->internal = hashp;
+	dbp->close = hash_close;
+	dbp->del = hash_delete;
+	dbp->fd = hash_fd;
+	dbp->get = hash_get;
+	dbp->put = hash_put;
+	dbp->seq = hash_seq;
+	dbp->sync = hash_sync;
+	dbp->type = DB_HASH;
+
+#ifdef DEBUG
+	(void)fprintf(stderr,
+"%s\n%s%x\n%s%d\n%s%d\n%s%d\n%s%d\n%s%d\n%s%d\n%s%d\n%s%d\n%s%d\n%s%x\n%s%x\n%s%d\n%s%d\n",
+	    "init_htab:",
+	    "TABLE POINTER   ", hashp,
+	    "BUCKET SIZE     ", hashp->BSIZE,
+	    "BUCKET SHIFT    ", hashp->BSHIFT,
+	    "DIRECTORY SIZE  ", hashp->DSIZE,
+	    "SEGMENT SIZE    ", hashp->SGSIZE,
+	    "SEGMENT SHIFT   ", hashp->SSHIFT,
+	    "FILL FACTOR     ", hashp->FFACTOR,
+	    "MAX BUCKET      ", hashp->MAX_BUCKET,
+	    "OVFL POINT	     ", hashp->OVFL_POINT,
+	    "LAST FREED      ", hashp->LAST_FREED,
+	    "HIGH MASK       ", hashp->HIGH_MASK,
+	    "LOW  MASK       ", hashp->LOW_MASK,
+	    "NSEGS           ", hashp->nsegs,
+	    "NKEYS           ", hashp->NKEYS);
+#endif
+#ifdef HASH_STATISTICS
+	hash_overflows = hash_accesses = hash_collisions = hash_expansions = 0;
+#endif
+	return (dbp);
+
+error1:
+	if (hashp != NULL)
+		(void)close(hashp->fp);
+
+error0:
+	free(hashp);
+	errno = save_errno;
+	return (NULL);
+}
+
+static int
+hash_close(dbp)
+	DB *dbp;
+{
+	HTAB *hashp;
+	int retval;
+
+	if (!dbp)
+		return (ERROR);
+
+	hashp = (HTAB *)dbp->internal;
+	retval = hdestroy(hashp);
+	free(dbp);
+	return (retval);
+}
+
+static int
+hash_fd(dbp)
+	const DB *dbp;
+{
+	HTAB *hashp;
+
+	if (!dbp)
+		return (ERROR);
+
+	hashp = (HTAB *)dbp->internal;
+	if (hashp->fp == -1) {
+		errno = ENOENT;
+		return (-1);
+	}
+	return (hashp->fp);
+}
+
+/************************** LOCAL CREATION ROUTINES **********************/
+static HTAB *
+init_hash(hashp, file, info)
+	HTAB *hashp;
+	const char *file;
+	HASHINFO *info;
+{
+	struct stat statbuf;
+	int nelem;
+
+	nelem = 1;
+	hashp->NKEYS = 0;
+	hashp->LORDER = BYTE_ORDER;
+	hashp->BSIZE = DEF_BUCKET_SIZE;
+	hashp->BSHIFT = DEF_BUCKET_SHIFT;
+	hashp->SGSIZE = DEF_SEGSIZE;
+	hashp->SSHIFT = DEF_SEGSIZE_SHIFT;
+	hashp->DSIZE = DEF_DIRSIZE;
+	hashp->FFACTOR = DEF_FFACTOR;
+	hashp->hash = __default_hash;
+	memset(hashp->SPARES, 0, sizeof(hashp->SPARES));
+	memset(hashp->BITMAPS, 0, sizeof (hashp->BITMAPS));
+
+	/* Fix bucket size to be optimal for file system */
+	if (file != NULL) {
+		if (stat(file, &statbuf))
+			return (NULL);
+		hashp->BSIZE = statbuf.st_blksize;
+		hashp->BSHIFT = __log2(hashp->BSIZE);
+	}
+
+	if (info) {
+		if (info->bsize) {
+			/* Round pagesize up to power of 2 */
+			hashp->BSHIFT = __log2(info->bsize);
+			hashp->BSIZE = 1 << hashp->BSHIFT;
+			if (hashp->BSIZE > MAX_BSIZE) {
+				errno = EINVAL;
+				return (NULL);
+			}
+		}
+		if (info->ffactor)
+			hashp->FFACTOR = info->ffactor;
+		if (info->hash)
+			hashp->hash = info->hash;
+		if (info->nelem)
+			nelem = info->nelem;
+		if (info->lorder) {
+			if (info->lorder != BIG_ENDIAN &&
+			    info->lorder != LITTLE_ENDIAN) {
+				errno = EINVAL;
+				return (NULL);
+			}
+			hashp->LORDER = info->lorder;
+		}
+	}
+	/* init_htab should destroy the table and set errno if it fails */
+	if (init_htab(hashp, nelem))
+		return (NULL);
+	else
+		return (hashp);
+}
+/*
+ * This calls alloc_segs which may run out of memory.  Alloc_segs will destroy
+ * the table and set errno, so we just pass the error information along.
+ *
+ * Returns 0 on No Error
+ */
+static int
+init_htab(hashp, nelem)
+	HTAB *hashp;
+	int nelem;
+{
+	register int nbuckets, nsegs;
+	int l2;
+
+	/*
+	 * Divide number of elements by the fill factor and determine a
+	 * desired number of buckets.  Allocate space for the next greater
+	 * power of two number of buckets.
+	 */
+	nelem = (nelem - 1) / hashp->FFACTOR + 1;
+
+	l2 = __log2(MAX(nelem, 2));
+	nbuckets = 1 << l2;
+
+	hashp->SPARES[l2] = l2 + 1;
+	hashp->SPARES[l2 + 1] = l2 + 1;
+	hashp->OVFL_POINT = l2;
+	hashp->LAST_FREED = 2;
+
+	/* First bitmap page is at: splitpoint l2 page offset 1 */
+	if (__init_bitmap(hashp, OADDR_OF(l2, 1), l2 + 1, 0))
+		return (-1);
+
+	hashp->MAX_BUCKET = hashp->LOW_MASK = nbuckets - 1;
+	hashp->HIGH_MASK = (nbuckets << 1) - 1;
+	hashp->HDRPAGES = ((MAX(sizeof(HASHHDR), MINHDRSIZE) - 1) >>
+	    hashp->BSHIFT) + 1;
+
+	nsegs = (nbuckets - 1) / hashp->SGSIZE + 1;
+	nsegs = 1 << __log2(nsegs);
+
+	if (nsegs > hashp->DSIZE)
+		hashp->DSIZE = nsegs;
+	return (alloc_segs(hashp, nsegs));
+}
+
+/********************** DESTROY/CLOSE ROUTINES ************************/
+
+/*
+ * Flushes any changes to the file if necessary and destroys the hashp
+ * structure, freeing all allocated space.
+ */
+static int
+hdestroy(hashp)
+	HTAB *hashp;
+{
+	int i, save_errno;
+
+	save_errno = 0;
+
+#ifdef HASH_STATISTICS
+	(void)fprintf(stderr, "hdestroy: accesses %ld collisions %ld\n",
+	    hash_accesses, hash_collisions);
+	(void)fprintf(stderr, "hdestroy: expansions %ld\n",
+	    hash_expansions);
+	(void)fprintf(stderr, "hdestroy: overflows %ld\n",
+	    hash_overflows);
+	(void)fprintf(stderr, "keys %ld maxp %d segmentcount %d\n",
+	    hashp->NKEYS, hashp->MAX_BUCKET, hashp->nsegs);
+
+	for (i = 0; i < NCACHED; i++)
+		(void)fprintf(stderr,
+		    "spares[%d] = %d\n", i, hashp->SPARES[i]);
+#endif
+	/*
+	 * Call on buffer manager to free buffers, and if required,
+	 * write them to disk.
+	 */
+	if (__buf_free(hashp, 1, hashp->save_file))
+		save_errno = errno;
+	if (hashp->dir) {
+		free(*hashp->dir);	/* Free initial segments */
+		/* Free extra segments */
+		while (hashp->exsegs--)
+			free(hashp->dir[--hashp->nsegs]);
+		free(hashp->dir);
+	}
+	if (flush_meta(hashp) && !save_errno)
+		save_errno = errno;
+	/* Free Bigmaps */
+	for (i = 0; i < hashp->nmaps; i++)
+		if (hashp->mapp[i])
+			free(hashp->mapp[i]);
+
+	if (hashp->fp != -1)
+		(void)close(hashp->fp);
+
+	free(hashp);
+
+	if (save_errno) {
+		errno = save_errno;
+		return (ERROR);
+	}
+	return (SUCCESS);
+}
+/*
+ * Write modified pages to disk
+ *
+ * Returns:
+ *	 0 == OK
+ *	-1 ERROR
+ */
+static int
+hash_sync(dbp, flags)
+	const DB *dbp;
+	u_int flags;
+{
+	HTAB *hashp;
+
+	if (flags != 0) {
+		errno = EINVAL;
+		return (ERROR);
+	}
+
+	if (!dbp)
+		return (ERROR);
+
+	hashp = (HTAB *)dbp->internal;
+	if (!hashp->save_file)
+		return (0);
+	if (__buf_free(hashp, 0, 1) || flush_meta(hashp))
+		return (ERROR);
+	hashp->new_file = 0;
+	return (0);
+}
+
+/*
+ * Returns:
+ *	 0 == OK
+ *	-1 indicates that errno should be set
+ */
+static int
+flush_meta(hashp)
+	HTAB *hashp;
+{
+	HASHHDR *whdrp;
+#if BYTE_ORDER == LITTLE_ENDIAN
+	HASHHDR whdr;
+#endif
+	int fp, i, wsize;
+
+	if (!hashp->save_file)
+		return (0);
+	hashp->MAGIC = HASHMAGIC;
+	hashp->VERSION = HASHVERSION;
+	hashp->H_CHARKEY = hashp->hash(CHARKEY, sizeof(CHARKEY));
+
+	fp = hashp->fp;
+	whdrp = &hashp->hdr;
+#if BYTE_ORDER == LITTLE_ENDIAN
+	whdrp = &whdr;
+	swap_header_copy(&hashp->hdr, whdrp);
+#endif
+	if ((lseek(fp, (off_t)0, SEEK_SET) == -1) ||
+	    ((wsize = write(fp, whdrp, sizeof(HASHHDR))) == -1))
+		return (-1);
+	else
+		if (wsize != sizeof(HASHHDR)) {
+			errno = EFTYPE;
+			hashp->errno = errno;
+			return (-1);
+		}
+	for (i = 0; i < NCACHED; i++)
+		if (hashp->mapp[i])
+			if (__put_page(hashp, (char *)hashp->mapp[i],
+				hashp->BITMAPS[i], 0, 1))
+				return (-1);
+	return (0);
+}
+
+/*******************************SEARCH ROUTINES *****************************/
+/*
+ * All the access routines return
+ *
+ * Returns:
+ *	 0 on SUCCESS
+ *	 1 to indicate an external ERROR (i.e. key not found, etc)
+ *	-1 to indicate an internal ERROR (i.e. out of memory, etc)
+ */
+static int
+hash_get(dbp, key, data, flag)
+	const DB *dbp;
+	const DBT *key;
+	DBT *data;
+	u_int flag;
+{
+	HTAB *hashp;
+
+	hashp = (HTAB *)dbp->internal;
+	if (flag) {
+		hashp->errno = errno = EINVAL;
+		return (ERROR);
+	}
+	return (hash_access(hashp, HASH_GET, (DBT *)key, data));
+}
+
+static int
+hash_put(dbp, key, data, flag)
+	const DB *dbp;
+	DBT *key;
+	const DBT *data;
+	u_int flag;
+{
+	HTAB *hashp;
+
+	hashp = (HTAB *)dbp->internal;
+	if (flag && flag != R_NOOVERWRITE) {
+		hashp->errno = errno = EINVAL;
+		return (ERROR);
+	}
+	if ((hashp->flags & O_ACCMODE) == O_RDONLY) {
+		hashp->errno = errno = EPERM;
+		return (ERROR);
+	}
+	return (hash_access(hashp, flag == R_NOOVERWRITE ?
+	    HASH_PUTNEW : HASH_PUT, (DBT *)key, (DBT *)data));
+}
+
+static int
+hash_delete(dbp, key, flag)
+	const DB *dbp;
+	const DBT *key;
+	u_int flag;		/* Ignored */
+{
+	HTAB *hashp;
+
+	hashp = (HTAB *)dbp->internal;
+	if (flag && flag != R_CURSOR) {
+		hashp->errno = errno = EINVAL;
+		return (ERROR);
+	}
+	if ((hashp->flags & O_ACCMODE) == O_RDONLY) {
+		hashp->errno = errno = EPERM;
+		return (ERROR);
+	}
+	return (hash_access(hashp, HASH_DELETE, (DBT *)key, NULL));
+}
+
+/*
+ * Assume that hashp has been set in wrapper routine.
+ */
+static int
+hash_access(hashp, action, key, val)
+	HTAB *hashp;
+	ACTION action;
+	DBT *key, *val;
+{
+	register BUFHEAD *rbufp;
+	BUFHEAD *bufp, *save_bufp;
+	register u_short *bp;
+	register int n, ndx, off, size;
+	register char *kp;
+	u_short pageno;
+
+#ifdef HASH_STATISTICS
+	hash_accesses++;
+#endif
+
+	off = hashp->BSIZE;
+	size = key->size;
+	kp = (char *)key->data;
+	rbufp = __get_buf(hashp, __call_hash(hashp, kp, size), NULL, 0);
+	if (!rbufp)
+		return (ERROR);
+	save_bufp = rbufp;
+
+	/* Pin the bucket chain */
+	rbufp->flags |= BUF_PIN;
+	for (bp = (u_short *)rbufp->page, n = *bp++, ndx = 1; ndx < n;)
+		if (bp[1] >= REAL_KEY) {
+			/* Real key/data pair */
+			if (size == off - *bp &&
+			    memcmp(kp, rbufp->page + *bp, size) == 0)
+				goto found;
+			off = bp[1];
+#ifdef HASH_STATISTICS
+			hash_collisions++;
+#endif
+			bp += 2;
+			ndx += 2;
+		} else if (bp[1] == OVFLPAGE) {
+			rbufp = __get_buf(hashp, *bp, rbufp, 0);
+			if (!rbufp) {
+				save_bufp->flags &= ~BUF_PIN;
+				return (ERROR);
+			}
+			/* FOR LOOP INIT */
+			bp = (u_short *)rbufp->page;
+			n = *bp++;
+			ndx = 1;
+			off = hashp->BSIZE;
+		} else if (bp[1] < REAL_KEY) {
+			if ((ndx =
+			    __find_bigpair(hashp, rbufp, ndx, kp, size)) > 0)
+				goto found;
+			if (ndx == -2) {
+				bufp = rbufp;
+				if (!(pageno =
+				    __find_last_page(hashp, &bufp))) {
+					ndx = 0;
+					rbufp = bufp;
+					break;	/* FOR */
+				}
+				rbufp = __get_buf(hashp, pageno, bufp, 0);
+				if (!rbufp) {
+					save_bufp->flags &= ~BUF_PIN;
+					return (ERROR);
+				}
+				/* FOR LOOP INIT */
+				bp = (u_short *)rbufp->page;
+				n = *bp++;
+				ndx = 1;
+				off = hashp->BSIZE;
+			} else {
+				save_bufp->flags &= ~BUF_PIN;
+				return (ERROR);
+			}
+		}
+
+	/* Not found */
+	switch (action) {
+	case HASH_PUT:
+	case HASH_PUTNEW:
+		if (__addel(hashp, rbufp, key, val)) {
+			save_bufp->flags &= ~BUF_PIN;
+			return (ERROR);
+		} else {
+			save_bufp->flags &= ~BUF_PIN;
+			return (SUCCESS);
+		}
+	case HASH_GET:
+	case HASH_DELETE:
+	default:
+		save_bufp->flags &= ~BUF_PIN;
+		return (ABNORMAL);
+	}
+
+found:
+	switch (action) {
+	case HASH_PUTNEW:
+		save_bufp->flags &= ~BUF_PIN;
+		return (ABNORMAL);
+	case HASH_GET:
+		bp = (u_short *)rbufp->page;
+		if (bp[ndx + 1] < REAL_KEY) {
+			if (__big_return(hashp, rbufp, ndx, val, 0))
+				return (ERROR);
+		} else {
+			val->data = (u_char *)rbufp->page + (int)bp[ndx + 1];
+			val->size = bp[ndx] - bp[ndx + 1];
+		}
+		break;
+	case HASH_PUT:
+		if ((__delpair(hashp, rbufp, ndx)) ||
+		    (__addel(hashp, rbufp, key, val))) {
+			save_bufp->flags &= ~BUF_PIN;
+			return (ERROR);
+		}
+		break;
+	case HASH_DELETE:
+		if (__delpair(hashp, rbufp, ndx))
+			return (ERROR);
+		break;
+	default:
+		abort();
+	}
+	save_bufp->flags &= ~BUF_PIN;
+	return (SUCCESS);
+}
+
+static int
+hash_seq(dbp, key, data, flag)
+	const DB *dbp;
+	DBT *key, *data;
+	u_int flag;
+{
+	register u_int bucket;
+	register BUFHEAD *bufp;
+	HTAB *hashp;
+	u_short *bp, ndx;
+
+	hashp = (HTAB *)dbp->internal;
+	if (flag && flag != R_FIRST && flag != R_NEXT) {
+		hashp->errno = errno = EINVAL;
+		return (ERROR);
+	}
+#ifdef HASH_STATISTICS
+	hash_accesses++;
+#endif
+	if ((hashp->cbucket < 0) || (flag == R_FIRST)) {
+		hashp->cbucket = 0;
+		hashp->cndx = 1;
+		hashp->cpage = NULL;
+	}
+
+	for (bp = NULL; !bp || !bp[0]; ) {
+		if (!(bufp = hashp->cpage)) {
+			for (bucket = hashp->cbucket;
+			    bucket <= hashp->MAX_BUCKET;
+			    bucket++, hashp->cndx = 1) {
+				bufp = __get_buf(hashp, bucket, NULL, 0);
+				if (!bufp)
+					return (ERROR);
+				hashp->cpage = bufp;
+				bp = (u_short *)bufp->page;
+				if (bp[0])
+					break;
+			}
+			hashp->cbucket = bucket;
+			if (hashp->cbucket > hashp->MAX_BUCKET) {
+				hashp->cbucket = -1;
+				return (ABNORMAL);
+			}
+		} else
+			bp = (u_short *)hashp->cpage->page;
+
+#ifdef DEBUG
+		assert(bp);
+		assert(bufp);
+#endif
+		while (bp[hashp->cndx + 1] == OVFLPAGE) {
+			bufp = hashp->cpage =
+			    __get_buf(hashp, bp[hashp->cndx], bufp, 0);
+			if (!bufp)
+				return (ERROR);
+			bp = (u_short *)(bufp->page);
+			hashp->cndx = 1;
+		}
+		if (!bp[0]) {
+			hashp->cpage = NULL;
+			++hashp->cbucket;
+		}
+	}
+	ndx = hashp->cndx;
+	if (bp[ndx + 1] < REAL_KEY) {
+		if (__big_keydata(hashp, bufp, key, data, 1))
+			return (ERROR);
+	} else {
+		key->data = (u_char *)hashp->cpage->page + bp[ndx];
+		key->size = (ndx > 1 ? bp[ndx - 1] : hashp->BSIZE) - bp[ndx];
+		data->data = (u_char *)hashp->cpage->page + bp[ndx + 1];
+		data->size = bp[ndx] - bp[ndx + 1];
+		ndx += 2;
+		if (ndx > bp[0]) {
+			hashp->cpage = NULL;
+			hashp->cbucket++;
+			hashp->cndx = 1;
+		} else
+			hashp->cndx = ndx;
+	}
+	return (SUCCESS);
+}
+
+/********************************* UTILITIES ************************/
+
+/*
+ * Returns:
+ *	 0 ==> OK
+ *	-1 ==> Error
+ */
+extern int
+__expand_table(hashp)
+	HTAB *hashp;
+{
+	u_int old_bucket, new_bucket;
+	int dirsize, new_segnum, spare_ndx;
+
+#ifdef HASH_STATISTICS
+	hash_expansions++;
+#endif
+	new_bucket = ++hashp->MAX_BUCKET;
+	old_bucket = (hashp->MAX_BUCKET & hashp->LOW_MASK);
+
+	new_segnum = new_bucket >> hashp->SSHIFT;
+
+	/* Check if we need a new segment */
+	if (new_segnum >= hashp->nsegs) {
+		/* Check if we need to expand directory */
+		if (new_segnum >= hashp->DSIZE) {
+			/* Reallocate directory */
+			dirsize = hashp->DSIZE * sizeof(SEGMENT *);
+			if (!hash_realloc(&hashp->dir, dirsize, dirsize << 1))
+				return (-1);
+			hashp->DSIZE = dirsize << 1;
+		}
+		if ((hashp->dir[new_segnum] =
+		    (SEGMENT)calloc(hashp->SGSIZE, sizeof(SEGMENT))) == NULL)
+			return (-1);
+		hashp->exsegs++;
+		hashp->nsegs++;
+	}
+	/*
+	 * If the split point is increasing (MAX_BUCKET's log base 2
+	 * * increases), we need to copy the current contents of the spare
+	 * split bucket to the next bucket.
+	 */
+	spare_ndx = __log2(hashp->MAX_BUCKET + 1);
+	if (spare_ndx > hashp->OVFL_POINT) {
+		hashp->SPARES[spare_ndx] = hashp->SPARES[hashp->OVFL_POINT];
+		hashp->OVFL_POINT = spare_ndx;
+	}
+
+	if (new_bucket > hashp->HIGH_MASK) {
+		/* Starting a new doubling */
+		hashp->LOW_MASK = hashp->HIGH_MASK;
+		hashp->HIGH_MASK = new_bucket | hashp->LOW_MASK;
+	}
+	/* Relocate records to the new bucket */
+	return (__split_page(hashp, old_bucket, new_bucket));
+}
+
+/*
+ * If realloc guarantees that the pointer is not destroyed if the realloc
+ * fails, then this routine can go away.
+ */
+static void *
+hash_realloc(p_ptr, oldsize, newsize)
+	SEGMENT **p_ptr;
+	int oldsize, newsize;
+{
+	register void *p;
+
+	if (p = malloc(newsize)) {
+		memmove(p, *p_ptr, oldsize);
+		memset((char *)p + oldsize, 0, newsize - oldsize);
+		free(*p_ptr);
+		*p_ptr = p;
+	}
+	return (p);
+}
+
+extern u_int
+__call_hash(hashp, k, len)
+	HTAB *hashp;
+	char *k;
+	int len;
+{
+	int n, bucket;
+
+	n = hashp->hash(k, len);
+	bucket = n & hashp->HIGH_MASK;
+	if (bucket > hashp->MAX_BUCKET)
+		bucket = bucket & hashp->LOW_MASK;
+	return (bucket);
+}
+
+/*
+ * Allocate segment table.  On error, destroy the table and set errno.
+ *
+ * Returns 0 on success
+ */
+static int
+alloc_segs(hashp, nsegs)
+	HTAB *hashp;
+	int nsegs;
+{
+	register int i;
+	register SEGMENT store;
+
+	int save_errno;
+
+	if ((hashp->dir =
+	    (SEGMENT *)calloc(hashp->DSIZE, sizeof(SEGMENT *))) == NULL) {
+		save_errno = errno;
+		(void)hdestroy(hashp);
+		errno = save_errno;
+		return (-1);
+	}
+	/* Allocate segments */
+	if ((store =
+	    (SEGMENT)calloc(nsegs << hashp->SSHIFT, sizeof(SEGMENT))) == NULL) {
+		save_errno = errno;
+		(void)hdestroy(hashp);
+		errno = save_errno;
+		return (-1);
+	}
+	for (i = 0; i < nsegs; i++, hashp->nsegs++)
+		hashp->dir[i] = &store[i << hashp->SSHIFT];
+	return (0);
+}
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+/*
+ * Hashp->hdr needs to be byteswapped.
+ */
+static void
+swap_header_copy(srcp, destp)
+	HASHHDR *srcp, *destp;
+{
+	int i;
+
+	P_32_COPY(srcp->magic, destp->magic);
+	P_32_COPY(srcp->version, destp->version);
+	P_32_COPY(srcp->lorder, destp->lorder);
+	P_32_COPY(srcp->bsize, destp->bsize);
+	P_32_COPY(srcp->bshift, destp->bshift);
+	P_32_COPY(srcp->dsize, destp->dsize);
+	P_32_COPY(srcp->ssize, destp->ssize);
+	P_32_COPY(srcp->sshift, destp->sshift);
+	P_32_COPY(srcp->ovfl_point, destp->ovfl_point);
+	P_32_COPY(srcp->last_freed, destp->last_freed);
+	P_32_COPY(srcp->max_bucket, destp->max_bucket);
+	P_32_COPY(srcp->high_mask, destp->high_mask);
+	P_32_COPY(srcp->low_mask, destp->low_mask);
+	P_32_COPY(srcp->ffactor, destp->ffactor);
+	P_32_COPY(srcp->nkeys, destp->nkeys);
+	P_32_COPY(srcp->hdrpages, destp->hdrpages);
+	P_32_COPY(srcp->h_charkey, destp->h_charkey);
+	for (i = 0; i < NCACHED; i++) {
+		P_32_COPY(srcp->spares[i], destp->spares[i]);
+		P_16_COPY(srcp->bitmaps[i], destp->bitmaps[i]);
+	}
+}
+
+static void
+swap_header(hashp)
+	HTAB *hashp;
+{
+	HASHHDR *hdrp;
+	int i;
+
+	hdrp = &hashp->hdr;
+
+	M_32_SWAP(hdrp->magic);
+	M_32_SWAP(hdrp->version);
+	M_32_SWAP(hdrp->lorder);
+	M_32_SWAP(hdrp->bsize);
+	M_32_SWAP(hdrp->bshift);
+	M_32_SWAP(hdrp->dsize);
+	M_32_SWAP(hdrp->ssize);
+	M_32_SWAP(hdrp->sshift);
+	M_32_SWAP(hdrp->ovfl_point);
+	M_32_SWAP(hdrp->last_freed);
+	M_32_SWAP(hdrp->max_bucket);
+	M_32_SWAP(hdrp->high_mask);
+	M_32_SWAP(hdrp->low_mask);
+	M_32_SWAP(hdrp->ffactor);
+	M_32_SWAP(hdrp->nkeys);
+	M_32_SWAP(hdrp->hdrpages);
+	M_32_SWAP(hdrp->h_charkey);
+	for (i = 0; i < NCACHED; i++) {
+		M_32_SWAP(hdrp->spares[i]);
+		M_16_SWAP(hdrp->bitmaps[i]);
+	}
+}
+#endif
diff --git a/lib/libc/db/hash/hash.h b/lib/libc/db/hash/hash.h
new file mode 100644
index 0000000..1c80f83
--- /dev/null
+++ b/lib/libc/db/hash/hash.h
@@ -0,0 +1,284 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)hash.h	8.2 (Berkeley) 2/21/94
+ */
+
+/* Operations */
+typedef enum {
+	HASH_GET, HASH_PUT, HASH_PUTNEW, HASH_DELETE, HASH_FIRST, HASH_NEXT
+} ACTION;
+
+/* Buffer Management structures */
+typedef struct _bufhead BUFHEAD;
+
+struct _bufhead {
+	BUFHEAD	*prev;		/* LRU links */
+	BUFHEAD	*next;		/* LRU links */
+	BUFHEAD	*ovfl;		/* Overflow page buffer header */
+	u_int	 addr;		/* Address of this page */
+	char	*page;		/* Actual page data */
+	char	 flags;
+#define	BUF_MOD		0x0001
+#define BUF_DISK	0x0002
+#define	BUF_BUCKET	0x0004
+#define	BUF_PIN		0x0008
+};
+
+#define IS_BUCKET(X)	((X) & BUF_BUCKET)
+
+typedef BUFHEAD **SEGMENT;
+
+/* Hash Table Information */
+typedef struct hashhdr {	/* Disk resident portion */
+	int	magic;		/* Magic NO for hash tables */
+	int	version;	/* Version ID */
+	long	lorder;		/* Byte Order */
+	int	bsize;		/* Bucket/Page Size */
+	int	bshift;		/* Bucket shift */
+	int	dsize;		/* Directory Size */
+	int	ssize;		/* Segment Size */
+	int	sshift;		/* Segment shift */
+	int	ovfl_point;	/* Where overflow pages are being allocated */
+	int	last_freed;	/* Last overflow page freed */
+	int	max_bucket;	/* ID of Maximum bucket in use */
+	int	high_mask;	/* Mask to modulo into entire table */
+	int	low_mask;	/* Mask to modulo into lower half of table */
+	int	ffactor;	/* Fill factor */
+	int	nkeys;		/* Number of keys in hash table */
+	int	hdrpages;	/* Size of table header */
+	int	h_charkey;	/* value of hash(CHARKEY) */
+#define NCACHED	32		/* number of bit maps and spare points */
+	int	spares[NCACHED];/* spare pages for overflow */
+	u_short	bitmaps[NCACHED];	/* address of overflow page bitmaps */
+} HASHHDR;
+
+typedef struct htab {		/* Memory resident data structure */
+	HASHHDR hdr;		/* Header */
+	int	nsegs;		/* Number of allocated segments */
+	int	exsegs;		/* Number of extra allocated segments */
+	u_int32_t		/* Hash function */
+	    (*hash)__P((const void *, size_t));
+	int	flags;		/* Flag values */
+	int	fp;		/* File pointer */
+	char	*tmp_buf;	/* Temporary Buffer for BIG data */
+	char	*tmp_key;	/* Temporary Buffer for BIG keys */
+	BUFHEAD *cpage;		/* Current page */
+	int	cbucket;	/* Current bucket */
+	int	cndx;		/* Index of next item on cpage */
+	int	errno;		/* Error Number -- for DBM compatability */
+	int	new_file;	/* Indicates if fd is backing store or no */
+	int	save_file;	/* Indicates whether we need to flush file at
+				 * exit */
+	u_long *mapp[NCACHED];	/* Pointers to page maps */
+	int	nmaps;		/* Initial number of bitmaps */
+	int	nbufs;		/* Number of buffers left to allocate */
+	BUFHEAD bufhead;	/* Header of buffer lru list */
+	SEGMENT *dir;		/* Hash Bucket directory */
+} HTAB;
+
+/*
+ * Constants
+ */
+#define	MAX_BSIZE		65536		/* 2^16 */
+#define MIN_BUFFERS		6
+#define MINHDRSIZE		512
+#define DEF_BUFSIZE		65536		/* 64 K */
+#define DEF_BUCKET_SIZE		4096
+#define DEF_BUCKET_SHIFT	12		/* log2(BUCKET) */
+#define DEF_SEGSIZE		256
+#define DEF_SEGSIZE_SHIFT	8		/* log2(SEGSIZE)	 */
+#define DEF_DIRSIZE		256
+#define DEF_FFACTOR		65536
+#define MIN_FFACTOR		4
+#define SPLTMAX			8
+#define CHARKEY			"%$sniglet^&"
+#define NUMKEY			1038583
+#define BYTE_SHIFT		3
+#define INT_TO_BYTE		2
+#define INT_BYTE_SHIFT		5
+#define ALL_SET			((u_int)0xFFFFFFFF)
+#define ALL_CLEAR		0
+
+#define PTROF(X)	((BUFHEAD *)((u_int)(X)&~0x3))
+#define ISMOD(X)	((u_int)(X)&0x1)
+#define DOMOD(X)	((X) = (char *)((u_int)(X)|0x1))
+#define ISDISK(X)	((u_int)(X)&0x2)
+#define DODISK(X)	((X) = (char *)((u_int)(X)|0x2))
+
+#define BITS_PER_MAP	32
+
+/* Given the address of the beginning of a big map, clear/set the nth bit */
+#define CLRBIT(A, N)	((A)[(N)/BITS_PER_MAP] &= ~(1<<((N)%BITS_PER_MAP)))
+#define SETBIT(A, N)	((A)[(N)/BITS_PER_MAP] |= (1<<((N)%BITS_PER_MAP)))
+#define ISSET(A, N)	((A)[(N)/BITS_PER_MAP] & (1<<((N)%BITS_PER_MAP)))
+
+/* Overflow management */
+/*
+ * Overflow page numbers are allocated per split point.  At each doubling of
+ * the table, we can allocate extra pages.  So, an overflow page number has
+ * the top 5 bits indicate which split point and the lower 11 bits indicate
+ * which page at that split point is indicated (pages within split points are
+ * numberered starting with 1).
+ */
+
+#define SPLITSHIFT	11
+#define SPLITMASK	0x7FF
+#define SPLITNUM(N)	(((u_int)(N)) >> SPLITSHIFT)
+#define OPAGENUM(N)	((N) & SPLITMASK)
+#define	OADDR_OF(S,O)	((u_int)((u_int)(S) << SPLITSHIFT) + (O))
+
+#define BUCKET_TO_PAGE(B) \
+	(B) + hashp->HDRPAGES + ((B) ? hashp->SPARES[__log2((B)+1)-1] : 0)
+#define OADDR_TO_PAGE(B) 	\
+	BUCKET_TO_PAGE ( (1 << SPLITNUM((B))) -1 ) + OPAGENUM((B));
+
+/*
+ * page.h contains a detailed description of the page format.
+ *
+ * Normally, keys and data are accessed from offset tables in the top of
+ * each page which point to the beginning of the key and data.  There are
+ * four flag values which may be stored in these offset tables which indicate
+ * the following:
+ *
+ *
+ * OVFLPAGE	Rather than a key data pair, this pair contains
+ *		the address of an overflow page.  The format of
+ *		the pair is:
+ *		    OVERFLOW_PAGE_NUMBER OVFLPAGE
+ *
+ * PARTIAL_KEY	This must be the first key/data pair on a page
+ *		and implies that page contains only a partial key.
+ *		That is, the key is too big to fit on a single page
+ *		so it starts on this page and continues on the next.
+ *		The format of the page is:
+ *		    KEY_OFF PARTIAL_KEY OVFL_PAGENO OVFLPAGE
+ *
+ *		    KEY_OFF -- offset of the beginning of the key
+ *		    PARTIAL_KEY -- 1
+ *		    OVFL_PAGENO - page number of the next overflow page
+ *		    OVFLPAGE -- 0
+ *
+ * FULL_KEY	This must be the first key/data pair on the page.  It
+ *		is used in two cases.
+ *
+ *		Case 1:
+ *		    There is a complete key on the page but no data
+ *		    (because it wouldn't fit).  The next page contains
+ *		    the data.
+ *
+ *		    Page format it:
+ *		    KEY_OFF FULL_KEY OVFL_PAGENO OVFL_PAGE
+ *
+ *		    KEY_OFF -- offset of the beginning of the key
+ *		    FULL_KEY -- 2
+ *		    OVFL_PAGENO - page number of the next overflow page
+ *		    OVFLPAGE -- 0
+ *
+ *		Case 2:
+ *		    This page contains no key, but part of a large
+ *		    data field, which is continued on the next page.
+ *
+ *		    Page format it:
+ *		    DATA_OFF FULL_KEY OVFL_PAGENO OVFL_PAGE
+ *
+ *		    KEY_OFF -- offset of the beginning of the data on
+ *				this page
+ *		    FULL_KEY -- 2
+ *		    OVFL_PAGENO - page number of the next overflow page
+ *		    OVFLPAGE -- 0
+ *
+ * FULL_KEY_DATA
+ *		This must be the first key/data pair on the page.
+ *		There are two cases:
+ *
+ *		Case 1:
+ *		    This page contains a key and the beginning of the
+ *		    data field, but the data field is continued on the
+ *		    next page.
+ *
+ *		    Page format is:
+ *		    KEY_OFF FULL_KEY_DATA OVFL_PAGENO DATA_OFF
+ *
+ *		    KEY_OFF -- offset of the beginning of the key
+ *		    FULL_KEY_DATA -- 3
+ *		    OVFL_PAGENO - page number of the next overflow page
+ *		    DATA_OFF -- offset of the beginning of the data
+ *
+ *		Case 2:
+ *		    This page contains the last page of a big data pair.
+ *		    There is no key, only the  tail end of the data
+ *		    on this page.
+ *
+ *		    Page format is:
+ *		    DATA_OFF FULL_KEY_DATA <OVFL_PAGENO> <OVFLPAGE>
+ *
+ *		    DATA_OFF -- offset of the beginning of the data on
+ *				this page
+ *		    FULL_KEY_DATA -- 3
+ *		    OVFL_PAGENO - page number of the next overflow page
+ *		    OVFLPAGE -- 0
+ *
+ *		    OVFL_PAGENO and OVFLPAGE are optional (they are
+ *		    not present if there is no next page).
+ */
+
+#define OVFLPAGE	0
+#define PARTIAL_KEY	1
+#define FULL_KEY	2
+#define FULL_KEY_DATA	3
+#define	REAL_KEY	4
+
+/* Short hands for accessing structure */
+#define BSIZE		hdr.bsize
+#define BSHIFT		hdr.bshift
+#define DSIZE		hdr.dsize
+#define SGSIZE		hdr.ssize
+#define SSHIFT		hdr.sshift
+#define LORDER		hdr.lorder
+#define OVFL_POINT	hdr.ovfl_point
+#define	LAST_FREED	hdr.last_freed
+#define MAX_BUCKET	hdr.max_bucket
+#define FFACTOR		hdr.ffactor
+#define HIGH_MASK	hdr.high_mask
+#define LOW_MASK	hdr.low_mask
+#define NKEYS		hdr.nkeys
+#define HDRPAGES	hdr.hdrpages
+#define SPARES		hdr.spares
+#define BITMAPS		hdr.bitmaps
+#define VERSION		hdr.version
+#define MAGIC		hdr.magic
+#define NEXT_FREE	hdr.next_free
+#define H_CHARKEY	hdr.h_charkey
diff --git a/lib/libc/db/hash/hash_bigkey.c b/lib/libc/db/hash/hash_bigkey.c
new file mode 100644
index 0000000..b747fbc
--- /dev/null
+++ b/lib/libc/db/hash/hash_bigkey.c
@@ -0,0 +1,667 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)hash_bigkey.c	8.2 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * PACKAGE: hash
+ * DESCRIPTION:
+ *	Big key/data handling for the hashing package.
+ *
+ * ROUTINES:
+ * External
+ *	__big_keydata
+ *	__big_split
+ *	__big_insert
+ *	__big_return
+ *	__big_delete
+ *	__find_last_page
+ * Internal
+ *	collect_key
+ *	collect_data
+ */
+
+#include <sys/param.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef DEBUG
+#include <assert.h>
+#endif
+
+#include <db.h>
+#include "hash.h"
+#include "page.h"
+#include "extern.h"
+
+static int collect_key __P((HTAB *, BUFHEAD *, int, DBT *, int));
+static int collect_data __P((HTAB *, BUFHEAD *, int, int));
+
+/*
+ * Big_insert
+ *
+ * You need to do an insert and the key/data pair is too big
+ *
+ * Returns:
+ * 0 ==> OK
+ *-1 ==> ERROR
+ */
+extern int
+__big_insert(hashp, bufp, key, val)
+	HTAB *hashp;
+	BUFHEAD *bufp;
+	const DBT *key, *val;
+{
+	register u_short *p;
+	int key_size, n, val_size;
+	u_short space, move_bytes, off;
+	char *cp, *key_data, *val_data;
+
+	cp = bufp->page;		/* Character pointer of p. */
+	p = (u_short *)cp;
+
+	key_data = (char *)key->data;
+	key_size = key->size;
+	val_data = (char *)val->data;
+	val_size = val->size;
+
+	/* First move the Key */
+	for (space = FREESPACE(p) - BIGOVERHEAD; key_size;
+	    space = FREESPACE(p) - BIGOVERHEAD) {
+		move_bytes = MIN(space, key_size);
+		off = OFFSET(p) - move_bytes;
+		memmove(cp + off, key_data, move_bytes);
+		key_size -= move_bytes;
+		key_data += move_bytes;
+		n = p[0];
+		p[++n] = off;
+		p[0] = ++n;
+		FREESPACE(p) = off - PAGE_META(n);
+		OFFSET(p) = off;
+		p[n] = PARTIAL_KEY;
+		bufp = __add_ovflpage(hashp, bufp);
+		if (!bufp)
+			return (-1);
+		n = p[0];
+		if (!key_size)
+			if (FREESPACE(p)) {
+				move_bytes = MIN(FREESPACE(p), val_size);
+				off = OFFSET(p) - move_bytes;
+				p[n] = off;
+				memmove(cp + off, val_data, move_bytes);
+				val_data += move_bytes;
+				val_size -= move_bytes;
+				p[n - 2] = FULL_KEY_DATA;
+				FREESPACE(p) = FREESPACE(p) - move_bytes;
+				OFFSET(p) = off;
+			} else
+				p[n - 2] = FULL_KEY;
+		p = (u_short *)bufp->page;
+		cp = bufp->page;
+		bufp->flags |= BUF_MOD;
+	}
+
+	/* Now move the data */
+	for (space = FREESPACE(p) - BIGOVERHEAD; val_size;
+	    space = FREESPACE(p) - BIGOVERHEAD) {
+		move_bytes = MIN(space, val_size);
+		/*
+		 * Here's the hack to make sure that if the data ends on the
+		 * same page as the key ends, FREESPACE is at least one.
+		 */
+		if (space == val_size && val_size == val->size)
+			move_bytes--;
+		off = OFFSET(p) - move_bytes;
+		memmove(cp + off, val_data, move_bytes);
+		val_size -= move_bytes;
+		val_data += move_bytes;
+		n = p[0];
+		p[++n] = off;
+		p[0] = ++n;
+		FREESPACE(p) = off - PAGE_META(n);
+		OFFSET(p) = off;
+		if (val_size) {
+			p[n] = FULL_KEY;
+			bufp = __add_ovflpage(hashp, bufp);
+			if (!bufp)
+				return (-1);
+			cp = bufp->page;
+			p = (u_short *)cp;
+		} else
+			p[n] = FULL_KEY_DATA;
+		bufp->flags |= BUF_MOD;
+	}
+	return (0);
+}
+
+/*
+ * Called when bufp's page  contains a partial key (index should be 1)
+ *
+ * All pages in the big key/data pair except bufp are freed.  We cannot
+ * free bufp because the page pointing to it is lost and we can't get rid
+ * of its pointer.
+ *
+ * Returns:
+ * 0 => OK
+ *-1 => ERROR
+ */
+extern int
+__big_delete(hashp, bufp)
+	HTAB *hashp;
+	BUFHEAD *bufp;
+{
+	register BUFHEAD *last_bfp, *rbufp;
+	u_short *bp, pageno;
+	int key_done, n;
+
+	rbufp = bufp;
+	last_bfp = NULL;
+	bp = (u_short *)bufp->page;
+	pageno = 0;
+	key_done = 0;
+
+	while (!key_done || (bp[2] != FULL_KEY_DATA)) {
+		if (bp[2] == FULL_KEY || bp[2] == FULL_KEY_DATA)
+			key_done = 1;
+
+		/*
+		 * If there is freespace left on a FULL_KEY_DATA page, then
+		 * the data is short and fits entirely on this page, and this
+		 * is the last page.
+		 */
+		if (bp[2] == FULL_KEY_DATA && FREESPACE(bp))
+			break;
+		pageno = bp[bp[0] - 1];
+		rbufp->flags |= BUF_MOD;
+		rbufp = __get_buf(hashp, pageno, rbufp, 0);
+		if (last_bfp)
+			__free_ovflpage(hashp, last_bfp);
+		last_bfp = rbufp;
+		if (!rbufp)
+			return (-1);		/* Error. */
+		bp = (u_short *)rbufp->page;
+	}
+
+	/*
+	 * If we get here then rbufp points to the last page of the big
+	 * key/data pair.  Bufp points to the first one -- it should now be
+	 * empty pointing to the next page after this pair.  Can't free it
+	 * because we don't have the page pointing to it.
+	 */
+
+	/* This is information from the last page of the pair. */
+	n = bp[0];
+	pageno = bp[n - 1];
+
+	/* Now, bp is the first page of the pair. */
+	bp = (u_short *)bufp->page;
+	if (n > 2) {
+		/* There is an overflow page. */
+		bp[1] = pageno;
+		bp[2] = OVFLPAGE;
+		bufp->ovfl = rbufp->ovfl;
+	} else
+		/* This is the last page. */
+		bufp->ovfl = NULL;
+	n -= 2;
+	bp[0] = n;
+	FREESPACE(bp) = hashp->BSIZE - PAGE_META(n);
+	OFFSET(bp) = hashp->BSIZE - 1;
+
+	bufp->flags |= BUF_MOD;
+	if (rbufp)
+		__free_ovflpage(hashp, rbufp);
+	if (last_bfp != rbufp)
+		__free_ovflpage(hashp, last_bfp);
+
+	hashp->NKEYS--;
+	return (0);
+}
+/*
+ * Returns:
+ *  0 = key not found
+ * -1 = get next overflow page
+ * -2 means key not found and this is big key/data
+ * -3 error
+ */
+extern int
+__find_bigpair(hashp, bufp, ndx, key, size)
+	HTAB *hashp;
+	BUFHEAD *bufp;
+	int ndx;
+	char *key;
+	int size;
+{
+	register u_short *bp;
+	register char *p;
+	int ksize;
+	u_short bytes;
+	char *kkey;
+
+	bp = (u_short *)bufp->page;
+	p = bufp->page;
+	ksize = size;
+	kkey = key;
+
+	for (bytes = hashp->BSIZE - bp[ndx];
+	    bytes <= size && bp[ndx + 1] == PARTIAL_KEY;
+	    bytes = hashp->BSIZE - bp[ndx]) {
+		if (memcmp(p + bp[ndx], kkey, bytes))
+			return (-2);
+		kkey += bytes;
+		ksize -= bytes;
+		bufp = __get_buf(hashp, bp[ndx + 2], bufp, 0);
+		if (!bufp)
+			return (-3);
+		p = bufp->page;
+		bp = (u_short *)p;
+		ndx = 1;
+	}
+
+	if (bytes != ksize || memcmp(p + bp[ndx], kkey, bytes)) {
+#ifdef HASH_STATISTICS
+		++hash_collisions;
+#endif
+		return (-2);
+	} else
+		return (ndx);
+}
+
+/*
+ * Given the buffer pointer of the first overflow page of a big pair,
+ * find the end of the big pair
+ *
+ * This will set bpp to the buffer header of the last page of the big pair.
+ * It will return the pageno of the overflow page following the last page
+ * of the pair; 0 if there isn't any (i.e. big pair is the last key in the
+ * bucket)
+ */
+extern u_short
+__find_last_page(hashp, bpp)
+	HTAB *hashp;
+	BUFHEAD **bpp;
+{
+	BUFHEAD *bufp;
+	u_short *bp, pageno;
+	int n;
+
+	bufp = *bpp;
+	bp = (u_short *)bufp->page;
+	for (;;) {
+		n = bp[0];
+
+		/*
+		 * This is the last page if: the tag is FULL_KEY_DATA and
+		 * either only 2 entries OVFLPAGE marker is explicit there
+		 * is freespace on the page.
+		 */
+		if (bp[2] == FULL_KEY_DATA &&
+		    ((n == 2) || (bp[n] == OVFLPAGE) || (FREESPACE(bp))))
+			break;
+
+		pageno = bp[n - 1];
+		bufp = __get_buf(hashp, pageno, bufp, 0);
+		if (!bufp)
+			return (0);	/* Need to indicate an error! */
+		bp = (u_short *)bufp->page;
+	}
+
+	*bpp = bufp;
+	if (bp[0] > 2)
+		return (bp[3]);
+	else
+		return (0);
+}
+
+/*
+ * Return the data for the key/data pair that begins on this page at this
+ * index (index should always be 1).
+ */
+extern int
+__big_return(hashp, bufp, ndx, val, set_current)
+	HTAB *hashp;
+	BUFHEAD *bufp;
+	int ndx;
+	DBT *val;
+	int set_current;
+{
+	BUFHEAD *save_p;
+	u_short *bp, len, off, save_addr;
+	char *tp;
+
+	bp = (u_short *)bufp->page;
+	while (bp[ndx + 1] == PARTIAL_KEY) {
+		bufp = __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
+		if (!bufp)
+			return (-1);
+		bp = (u_short *)bufp->page;
+		ndx = 1;
+	}
+
+	if (bp[ndx + 1] == FULL_KEY) {
+		bufp = __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
+		if (!bufp)
+			return (-1);
+		bp = (u_short *)bufp->page;
+		save_p = bufp;
+		save_addr = save_p->addr;
+		off = bp[1];
+		len = 0;
+	} else
+		if (!FREESPACE(bp)) {
+			/*
+			 * This is a hack.  We can't distinguish between
+			 * FULL_KEY_DATA that contains complete data or
+			 * incomplete data, so we require that if the data
+			 * is complete, there is at least 1 byte of free
+			 * space left.
+			 */
+			off = bp[bp[0]];
+			len = bp[1] - off;
+			save_p = bufp;
+			save_addr = bufp->addr;
+			bufp = __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
+			if (!bufp)
+				return (-1);
+			bp = (u_short *)bufp->page;
+		} else {
+			/* The data is all on one page. */
+			tp = (char *)bp;
+			off = bp[bp[0]];
+			val->data = (u_char *)tp + off;
+			val->size = bp[1] - off;
+			if (set_current) {
+				if (bp[0] == 2) {	/* No more buckets in
+							 * chain */
+					hashp->cpage = NULL;
+					hashp->cbucket++;
+					hashp->cndx = 1;
+				} else {
+					hashp->cpage = __get_buf(hashp,
+					    bp[bp[0] - 1], bufp, 0);
+					if (!hashp->cpage)
+						return (-1);
+					hashp->cndx = 1;
+					if (!((u_short *)
+					    hashp->cpage->page)[0]) {
+						hashp->cbucket++;
+						hashp->cpage = NULL;
+					}
+				}
+			}
+			return (0);
+		}
+
+	val->size = collect_data(hashp, bufp, (int)len, set_current);
+	if (val->size == -1)
+		return (-1);
+	if (save_p->addr != save_addr) {
+		/* We are pretty short on buffers. */
+		errno = EINVAL;			/* OUT OF BUFFERS */
+		return (-1);
+	}
+	memmove(hashp->tmp_buf, (save_p->page) + off, len);
+	val->data = (u_char *)hashp->tmp_buf;
+	return (0);
+}
+/*
+ * Count how big the total datasize is by recursing through the pages.  Then
+ * allocate a buffer and copy the data as you recurse up.
+ */
+static int
+collect_data(hashp, bufp, len, set)
+	HTAB *hashp;
+	BUFHEAD *bufp;
+	int len, set;
+{
+	register u_short *bp;
+	register char *p;
+	BUFHEAD *xbp;
+	u_short save_addr;
+	int mylen, totlen;
+
+	p = bufp->page;
+	bp = (u_short *)p;
+	mylen = hashp->BSIZE - bp[1];
+	save_addr = bufp->addr;
+
+	if (bp[2] == FULL_KEY_DATA) {		/* End of Data */
+		totlen = len + mylen;
+		if (hashp->tmp_buf)
+			free(hashp->tmp_buf);
+		if ((hashp->tmp_buf = (char *)malloc(totlen)) == NULL)
+			return (-1);
+		if (set) {
+			hashp->cndx = 1;
+			if (bp[0] == 2) {	/* No more buckets in chain */
+				hashp->cpage = NULL;
+				hashp->cbucket++;
+			} else {
+				hashp->cpage =
+				    __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
+				if (!hashp->cpage)
+					return (-1);
+				else if (!((u_short *)hashp->cpage->page)[0]) {
+					hashp->cbucket++;
+					hashp->cpage = NULL;
+				}
+			}
+		}
+	} else {
+		xbp = __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
+		if (!xbp || ((totlen =
+		    collect_data(hashp, xbp, len + mylen, set)) < 1))
+			return (-1);
+	}
+	if (bufp->addr != save_addr) {
+		errno = EINVAL;			/* Out of buffers. */
+		return (-1);
+	}
+	memmove(&hashp->tmp_buf[len], (bufp->page) + bp[1], mylen);
+	return (totlen);
+}
+
+/*
+ * Fill in the key and data for this big pair.
+ */
+extern int
+__big_keydata(hashp, bufp, key, val, set)
+	HTAB *hashp;
+	BUFHEAD *bufp;
+	DBT *key, *val;
+	int set;
+{
+	key->size = collect_key(hashp, bufp, 0, val, set);
+	if (key->size == -1)
+		return (-1);
+	key->data = (u_char *)hashp->tmp_key;
+	return (0);
+}
+
+/*
+ * Count how big the total key size is by recursing through the pages.  Then
+ * collect the data, allocate a buffer and copy the key as you recurse up.
+ */
+static int
+collect_key(hashp, bufp, len, val, set)
+	HTAB *hashp;
+	BUFHEAD *bufp;
+	int len;
+	DBT *val;
+	int set;
+{
+	BUFHEAD *xbp;
+	char *p;
+	int mylen, totlen;
+	u_short *bp, save_addr;
+
+	p = bufp->page;
+	bp = (u_short *)p;
+	mylen = hashp->BSIZE - bp[1];
+
+	save_addr = bufp->addr;
+	totlen = len + mylen;
+	if (bp[2] == FULL_KEY || bp[2] == FULL_KEY_DATA) {    /* End of Key. */
+		if (hashp->tmp_key != NULL)
+			free(hashp->tmp_key);
+		if ((hashp->tmp_key = (char *)malloc(totlen)) == NULL)
+			return (-1);
+		if (__big_return(hashp, bufp, 1, val, set))
+			return (-1);
+	} else {
+		xbp = __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
+		if (!xbp || ((totlen =
+		    collect_key(hashp, xbp, totlen, val, set)) < 1))
+			return (-1);
+	}
+	if (bufp->addr != save_addr) {
+		errno = EINVAL;		/* MIS -- OUT OF BUFFERS */
+		return (-1);
+	}
+	memmove(&hashp->tmp_key[len], (bufp->page) + bp[1], mylen);
+	return (totlen);
+}
+
+/*
+ * Returns:
+ *  0 => OK
+ * -1 => error
+ */
+extern int
+__big_split(hashp, op, np, big_keyp, addr, obucket, ret)
+	HTAB *hashp;
+	BUFHEAD *op;	/* Pointer to where to put keys that go in old bucket */
+	BUFHEAD *np;	/* Pointer to new bucket page */
+			/* Pointer to first page containing the big key/data */
+	BUFHEAD *big_keyp;
+	int addr;	/* Address of big_keyp */
+	u_int   obucket;/* Old Bucket */
+	SPLIT_RETURN *ret;
+{
+	register BUFHEAD *tmpp;
+	register u_short *tp;
+	BUFHEAD *bp;
+	DBT key, val;
+	u_int change;
+	u_short free_space, n, off;
+
+	bp = big_keyp;
+
+	/* Now figure out where the big key/data goes */
+	if (__big_keydata(hashp, big_keyp, &key, &val, 0))
+		return (-1);
+	change = (__call_hash(hashp, key.data, key.size) != obucket);
+
+	if (ret->next_addr = __find_last_page(hashp, &big_keyp)) {
+		if (!(ret->nextp =
+		    __get_buf(hashp, ret->next_addr, big_keyp, 0)))
+			return (-1);;
+	} else
+		ret->nextp = NULL;
+
+	/* Now make one of np/op point to the big key/data pair */
+#ifdef DEBUG
+	assert(np->ovfl == NULL);
+#endif
+	if (change)
+		tmpp = np;
+	else
+		tmpp = op;
+
+	tmpp->flags |= BUF_MOD;
+#ifdef DEBUG1
+	(void)fprintf(stderr,
+	    "BIG_SPLIT: %d->ovfl was %d is now %d\n", tmpp->addr,
+	    (tmpp->ovfl ? tmpp->ovfl->addr : 0), (bp ? bp->addr : 0));
+#endif
+	tmpp->ovfl = bp;	/* one of op/np point to big_keyp */
+	tp = (u_short *)tmpp->page;
+#ifdef DEBUG
+	assert(FREESPACE(tp) >= OVFLSIZE);
+#endif
+	n = tp[0];
+	off = OFFSET(tp);
+	free_space = FREESPACE(tp);
+	tp[++n] = (u_short)addr;
+	tp[++n] = OVFLPAGE;
+	tp[0] = n;
+	OFFSET(tp) = off;
+	FREESPACE(tp) = free_space - OVFLSIZE;
+
+	/*
+	 * Finally, set the new and old return values. BIG_KEYP contains a
+	 * pointer to the last page of the big key_data pair. Make sure that
+	 * big_keyp has no following page (2 elements) or create an empty
+	 * following page.
+	 */
+
+	ret->newp = np;
+	ret->oldp = op;
+
+	tp = (u_short *)big_keyp->page;
+	big_keyp->flags |= BUF_MOD;
+	if (tp[0] > 2) {
+		/*
+		 * There may be either one or two offsets on this page.  If
+		 * there is one, then the overflow page is linked on normally
+		 * and tp[4] is OVFLPAGE.  If there are two, tp[4] contains
+		 * the second offset and needs to get stuffed in after the
+		 * next overflow page is added.
+		 */
+		n = tp[4];
+		free_space = FREESPACE(tp);
+		off = OFFSET(tp);
+		tp[0] -= 2;
+		FREESPACE(tp) = free_space + OVFLSIZE;
+		OFFSET(tp) = off;
+		tmpp = __add_ovflpage(hashp, big_keyp);
+		if (!tmpp)
+			return (-1);
+		tp[4] = n;
+	} else
+		tmpp = big_keyp;
+
+	if (change)
+		ret->newp = tmpp;
+	else
+		ret->oldp = tmpp;
+	return (0);
+}
diff --git a/lib/libc/db/hash/hash_buf.c b/lib/libc/db/hash/hash_buf.c
new file mode 100644
index 0000000..1362c83
--- /dev/null
+++ b/lib/libc/db/hash/hash_buf.c
@@ -0,0 +1,347 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)hash_buf.c	8.2 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * PACKAGE: hash
+ *
+ * DESCRIPTION:
+ *	Contains buffer management
+ *
+ * ROUTINES:
+ * External
+ *	__buf_init
+ *	__get_buf
+ *	__buf_free
+ *	__reclaim_buf
+ * Internal
+ *	newbuf
+ */
+
+#include <sys/param.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef DEBUG
+#include <assert.h>
+#endif
+
+#include <db.h>
+#include "hash.h"
+#include "page.h"
+#include "extern.h"
+
+static BUFHEAD *newbuf __P((HTAB *, u_int, BUFHEAD *));
+
+/* Unlink B from its place in the lru */
+#define BUF_REMOVE(B) { \
+	(B)->prev->next = (B)->next; \
+	(B)->next->prev = (B)->prev; \
+}
+
+/* Insert B after P */
+#define BUF_INSERT(B, P) { \
+	(B)->next = (P)->next; \
+	(B)->prev = (P); \
+	(P)->next = (B); \
+	(B)->next->prev = (B); \
+}
+
+#define	MRU	hashp->bufhead.next
+#define	LRU	hashp->bufhead.prev
+
+#define MRU_INSERT(B)	BUF_INSERT((B), &hashp->bufhead)
+#define LRU_INSERT(B)	BUF_INSERT((B), LRU)
+
+/*
+ * We are looking for a buffer with address "addr".  If prev_bp is NULL, then
+ * address is a bucket index.  If prev_bp is not NULL, then it points to the
+ * page previous to an overflow page that we are trying to find.
+ *
+ * CAVEAT:  The buffer header accessed via prev_bp's ovfl field may no longer
+ * be valid.  Therefore, you must always verify that its address matches the
+ * address you are seeking.
+ */
+extern BUFHEAD *
+__get_buf(hashp, addr, prev_bp, newpage)
+	HTAB *hashp;
+	u_int addr;
+	BUFHEAD *prev_bp;
+	int newpage;	/* If prev_bp set, indicates a new overflow page. */
+{
+	register BUFHEAD *bp;
+	register u_int is_disk_mask;
+	register int is_disk, segment_ndx;
+	SEGMENT segp;
+
+	is_disk = 0;
+	is_disk_mask = 0;
+	if (prev_bp) {
+		bp = prev_bp->ovfl;
+		if (!bp || (bp->addr != addr))
+			bp = NULL;
+		if (!newpage)
+			is_disk = BUF_DISK;
+	} else {
+		/* Grab buffer out of directory */
+		segment_ndx = addr & (hashp->SGSIZE - 1);
+
+		/* valid segment ensured by __call_hash() */
+		segp = hashp->dir[addr >> hashp->SSHIFT];
+#ifdef DEBUG
+		assert(segp != NULL);
+#endif
+		bp = PTROF(segp[segment_ndx]);
+		is_disk_mask = ISDISK(segp[segment_ndx]);
+		is_disk = is_disk_mask || !hashp->new_file;
+	}
+
+	if (!bp) {
+		bp = newbuf(hashp, addr, prev_bp);
+		if (!bp ||
+		    __get_page(hashp, bp->page, addr, !prev_bp, is_disk, 0))
+			return (NULL);
+		if (!prev_bp)
+			segp[segment_ndx] =
+			    (BUFHEAD *)((u_int)bp | is_disk_mask);
+	} else {
+		BUF_REMOVE(bp);
+		MRU_INSERT(bp);
+	}
+	return (bp);
+}
+
+/*
+ * We need a buffer for this page. Either allocate one, or evict a resident
+ * one (if we have as many buffers as we're allowed) and put this one in.
+ *
+ * If newbuf finds an error (returning NULL), it also sets errno.
+ */
+static BUFHEAD *
+newbuf(hashp, addr, prev_bp)
+	HTAB *hashp;
+	u_int addr;
+	BUFHEAD *prev_bp;
+{
+	register BUFHEAD *bp;		/* The buffer we're going to use */
+	register BUFHEAD *xbp;		/* Temp pointer */
+	register BUFHEAD *next_xbp;
+	SEGMENT segp;
+	int segment_ndx;
+	u_short oaddr, *shortp;
+
+	oaddr = 0;
+	bp = LRU;
+	/*
+	 * If LRU buffer is pinned, the buffer pool is too small. We need to
+	 * allocate more buffers.
+	 */
+	if (hashp->nbufs || (bp->flags & BUF_PIN)) {
+		/* Allocate a new one */
+		if ((bp = (BUFHEAD *)malloc(sizeof(BUFHEAD))) == NULL)
+			return (NULL);
+		if ((bp->page = (char *)malloc(hashp->BSIZE)) == NULL) {
+			free(bp);
+			return (NULL);
+		}
+		if (hashp->nbufs)
+			hashp->nbufs--;
+	} else {
+		/* Kick someone out */
+		BUF_REMOVE(bp);
+		/*
+		 * If this is an overflow page with addr 0, it's already been
+		 * flushed back in an overflow chain and initialized.
+		 */
+		if ((bp->addr != 0) || (bp->flags & BUF_BUCKET)) {
+			/*
+			 * Set oaddr before __put_page so that you get it
+			 * before bytes are swapped.
+			 */
+			shortp = (u_short *)bp->page;
+			if (shortp[0])
+				oaddr = shortp[shortp[0] - 1];
+			if ((bp->flags & BUF_MOD) && __put_page(hashp, bp->page,
+			    bp->addr, (int)IS_BUCKET(bp->flags), 0))
+				return (NULL);
+			/*
+			 * Update the pointer to this page (i.e. invalidate it).
+			 *
+			 * If this is a new file (i.e. we created it at open
+			 * time), make sure that we mark pages which have been
+			 * written to disk so we retrieve them from disk later,
+			 * rather than allocating new pages.
+			 */
+			if (IS_BUCKET(bp->flags)) {
+				segment_ndx = bp->addr & (hashp->SGSIZE - 1);
+				segp = hashp->dir[bp->addr >> hashp->SSHIFT];
+#ifdef DEBUG
+				assert(segp != NULL);
+#endif
+
+				if (hashp->new_file &&
+				    ((bp->flags & BUF_MOD) ||
+				    ISDISK(segp[segment_ndx])))
+					segp[segment_ndx] = (BUFHEAD *)BUF_DISK;
+				else
+					segp[segment_ndx] = NULL;
+			}
+			/*
+			 * Since overflow pages can only be access by means of
+			 * their bucket, free overflow pages associated with
+			 * this bucket.
+			 */
+			for (xbp = bp; xbp->ovfl;) {
+				next_xbp = xbp->ovfl;
+				xbp->ovfl = 0;
+				xbp = next_xbp;
+
+				/* Check that ovfl pointer is up date. */
+				if (IS_BUCKET(xbp->flags) ||
+				    (oaddr != xbp->addr))
+					break;
+
+				shortp = (u_short *)xbp->page;
+				if (shortp[0])
+					/* set before __put_page */
+					oaddr = shortp[shortp[0] - 1];
+				if ((xbp->flags & BUF_MOD) && __put_page(hashp,
+				    xbp->page, xbp->addr, 0, 0))
+					return (NULL);
+				xbp->addr = 0;
+				xbp->flags = 0;
+				BUF_REMOVE(xbp);
+				LRU_INSERT(xbp);
+			}
+		}
+	}
+
+	/* Now assign this buffer */
+	bp->addr = addr;
+#ifdef DEBUG1
+	(void)fprintf(stderr, "NEWBUF1: %d->ovfl was %d is now %d\n",
+	    bp->addr, (bp->ovfl ? bp->ovfl->addr : 0), 0);
+#endif
+	bp->ovfl = NULL;
+	if (prev_bp) {
+		/*
+		 * If prev_bp is set, this is an overflow page, hook it in to
+		 * the buffer overflow links.
+		 */
+#ifdef DEBUG1
+		(void)fprintf(stderr, "NEWBUF2: %d->ovfl was %d is now %d\n",
+		    prev_bp->addr, (prev_bp->ovfl ? bp->ovfl->addr : 0),
+		    (bp ? bp->addr : 0));
+#endif
+		prev_bp->ovfl = bp;
+		bp->flags = 0;
+	} else
+		bp->flags = BUF_BUCKET;
+	MRU_INSERT(bp);
+	return (bp);
+}
+
+extern void
+__buf_init(hashp, nbytes)
+	HTAB *hashp;
+	int nbytes;
+{
+	BUFHEAD *bfp;
+	int npages;
+
+	bfp = &(hashp->bufhead);
+	npages = (nbytes + hashp->BSIZE - 1) >> hashp->BSHIFT;
+	npages = MAX(npages, MIN_BUFFERS);
+
+	hashp->nbufs = npages;
+	bfp->next = bfp;
+	bfp->prev = bfp;
+	/*
+	 * This space is calloc'd so these are already null.
+	 *
+	 * bfp->ovfl = NULL;
+	 * bfp->flags = 0;
+	 * bfp->page = NULL;
+	 * bfp->addr = 0;
+	 */
+}
+
+extern int
+__buf_free(hashp, do_free, to_disk)
+	HTAB *hashp;
+	int do_free, to_disk;
+{
+	BUFHEAD *bp;
+
+	/* Need to make sure that buffer manager has been initialized */
+	if (!LRU)
+		return (0);
+	for (bp = LRU; bp != &hashp->bufhead;) {
+		/* Check that the buffer is valid */
+		if (bp->addr || IS_BUCKET(bp->flags)) {
+			if (to_disk && (bp->flags & BUF_MOD) &&
+			    __put_page(hashp, bp->page,
+			    bp->addr, IS_BUCKET(bp->flags), 0))
+				return (-1);
+		}
+		/* Check if we are freeing stuff */
+		if (do_free) {
+			if (bp->page)
+				free(bp->page);
+			BUF_REMOVE(bp);
+			free(bp);
+			bp = LRU;
+		} else
+			bp = bp->prev;
+	}
+	return (0);
+}
+
+extern void
+__reclaim_buf(hashp, bp)
+	HTAB *hashp;
+	BUFHEAD *bp;
+{
+	bp->ovfl = 0;
+	bp->addr = 0;
+	bp->flags = 0;
+	BUF_REMOVE(bp);
+	LRU_INSERT(bp);
+}
diff --git a/lib/libc/db/hash/hash_func.c b/lib/libc/db/hash/hash_func.c
new file mode 100644
index 0000000..a5ec434
--- /dev/null
+++ b/lib/libc/db/hash/hash_func.c
@@ -0,0 +1,212 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)hash_func.c	8.2 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <db.h>
+#include "hash.h"
+#include "page.h"
+#include "extern.h"
+
+static u_int32_t hash1 __P((const void *, size_t));
+static u_int32_t hash2 __P((const void *, size_t));
+static u_int32_t hash3 __P((const void *, size_t));
+static u_int32_t hash4 __P((const void *, size_t));
+
+/* Global default hash function */
+u_int32_t (*__default_hash) __P((const void *, size_t)) = hash4;
+
+/*
+ * HASH FUNCTIONS
+ *
+ * Assume that we've already split the bucket to which this key hashes,
+ * calculate that bucket, and check that in fact we did already split it.
+ *
+ * This came from ejb's hsearch.
+ */
+
+#define PRIME1		37
+#define PRIME2		1048583
+
+static u_int32_t
+hash1(keyarg, len)
+	const void *keyarg;
+	register size_t len;
+{
+	register const u_char *key;
+	register u_int32_t h;
+
+	/* Convert string to integer */
+	for (key = keyarg, h = 0; len--;)
+		h = h * PRIME1 ^ (*key++ - ' ');
+	h %= PRIME2;
+	return (h);
+}
+
+/*
+ * Phong's linear congruential hash
+ */
+#define dcharhash(h, c)	((h) = 0x63c63cd9*(h) + 0x9c39c33d + (c))
+
+static u_int32_t
+hash2(keyarg, len)
+	const void *keyarg;
+	size_t len;
+{
+	register const u_char *e, *key;
+	register u_int32_t h;
+	register u_char c;
+
+	key = keyarg;
+	e = key + len;
+	for (h = 0; key != e;) {
+		c = *key++;
+		if (!c && key > e)
+			break;
+		dcharhash(h, c);
+	}
+	return (h);
+}
+
+/*
+ * This is INCREDIBLY ugly, but fast.  We break the string up into 8 byte
+ * units.  On the first time through the loop we get the "leftover bytes"
+ * (strlen % 8).  On every other iteration, we perform 8 HASHC's so we handle
+ * all 8 bytes.  Essentially, this saves us 7 cmp & branch instructions.  If
+ * this routine is heavily used enough, it's worth the ugly coding.
+ *
+ * OZ's original sdbm hash
+ */
+static u_int32_t
+hash3(keyarg, len)
+	const void *keyarg;
+	register size_t len;
+{
+	register const u_char *key;
+	register size_t loop;
+	register u_int32_t h;
+
+#define HASHC   h = *key++ + 65599 * h
+
+	h = 0;
+	key = keyarg;
+	if (len > 0) {
+		loop = (len + 8 - 1) >> 3;
+
+		switch (len & (8 - 1)) {
+		case 0:
+			do {
+				HASHC;
+				/* FALLTHROUGH */
+		case 7:
+				HASHC;
+				/* FALLTHROUGH */
+		case 6:
+				HASHC;
+				/* FALLTHROUGH */
+		case 5:
+				HASHC;
+				/* FALLTHROUGH */
+		case 4:
+				HASHC;
+				/* FALLTHROUGH */
+		case 3:
+				HASHC;
+				/* FALLTHROUGH */
+		case 2:
+				HASHC;
+				/* FALLTHROUGH */
+		case 1:
+				HASHC;
+			} while (--loop);
+		}
+	}
+	return (h);
+}
+
+/* Hash function from Chris Torek. */
+static u_int32_t
+hash4(keyarg, len)
+	const void *keyarg;
+	register size_t len;
+{
+	register const u_char *key;
+	register size_t loop;
+	register u_int32_t h;
+
+#define HASH4a   h = (h << 5) - h + *key++;
+#define HASH4b   h = (h << 5) + h + *key++;
+#define HASH4 HASH4b
+
+	h = 0;
+	key = keyarg;
+	if (len > 0) {
+		loop = (len + 8 - 1) >> 3;
+
+		switch (len & (8 - 1)) {
+		case 0:
+			do {
+				HASH4;
+				/* FALLTHROUGH */
+		case 7:
+				HASH4;
+				/* FALLTHROUGH */
+		case 6:
+				HASH4;
+				/* FALLTHROUGH */
+		case 5:
+				HASH4;
+				/* FALLTHROUGH */
+		case 4:
+				HASH4;
+				/* FALLTHROUGH */
+		case 3:
+				HASH4;
+				/* FALLTHROUGH */
+		case 2:
+				HASH4;
+				/* FALLTHROUGH */
+		case 1:
+				HASH4;
+			} while (--loop);
+		}
+	}
+	return (h);
+}
diff --git a/lib/libc/db/hash/hash_log2.c b/lib/libc/db/hash/hash_log2.c
new file mode 100644
index 0000000..b773707
--- /dev/null
+++ b/lib/libc/db/hash/hash_log2.c
@@ -0,0 +1,52 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)hash_log2.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+u_int
+__log2(num)
+	u_int num;
+{
+	register u_int i, limit;
+
+	limit = 1;
+	for (i = 0; limit < num; limit = limit << 1, i++);
+	return (i);
+}
diff --git a/lib/libc/db/hash/hash_page.c b/lib/libc/db/hash/hash_page.c
new file mode 100644
index 0000000..7b018cb
--- /dev/null
+++ b/lib/libc/db/hash/hash_page.c
@@ -0,0 +1,944 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)hash_page.c	8.4 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * PACKAGE:  hashing
+ *
+ * DESCRIPTION:
+ *	Page manipulation for hashing package.
+ *
+ * ROUTINES:
+ *
+ * External
+ *	__get_page
+ *	__add_ovflpage
+ * Internal
+ *	overflow_page
+ *	open_temp
+ */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#ifdef DEBUG
+#include <assert.h>
+#endif
+
+#include <db.h>
+#include "hash.h"
+#include "page.h"
+#include "extern.h"
+
+static u_long	*fetch_bitmap __P((HTAB *, int));
+static u_long	 first_free __P((u_long));
+static int	 open_temp __P((HTAB *));
+static u_short	 overflow_page __P((HTAB *));
+static void	 putpair __P((char *, const DBT *, const DBT *));
+static void	 squeeze_key __P((u_short *, const DBT *, const DBT *));
+static int	 ugly_split
+		    __P((HTAB *, u_int, BUFHEAD *, BUFHEAD *, int, int));
+
+#define	PAGE_INIT(P) { \
+	((u_short *)(P))[0] = 0; \
+	((u_short *)(P))[1] = hashp->BSIZE - 3 * sizeof(u_short); \
+	((u_short *)(P))[2] = hashp->BSIZE; \
+}
+
+/*
+ * This is called AFTER we have verified that there is room on the page for
+ * the pair (PAIRFITS has returned true) so we go right ahead and start moving
+ * stuff on.
+ */
+static void
+putpair(p, key, val)
+	char *p;
+	const DBT *key, *val;
+{
+	register u_short *bp, n, off;
+
+	bp = (u_short *)p;
+
+	/* Enter the key first. */
+	n = bp[0];
+
+	off = OFFSET(bp) - key->size;
+	memmove(p + off, key->data, key->size);
+	bp[++n] = off;
+
+	/* Now the data. */
+	off -= val->size;
+	memmove(p + off, val->data, val->size);
+	bp[++n] = off;
+
+	/* Adjust page info. */
+	bp[0] = n;
+	bp[n + 1] = off - ((n + 3) * sizeof(u_short));
+	bp[n + 2] = off;
+}
+
+/*
+ * Returns:
+ *	 0 OK
+ *	-1 error
+ */
+extern int
+__delpair(hashp, bufp, ndx)
+	HTAB *hashp;
+	BUFHEAD *bufp;
+	register int ndx;
+{
+	register u_short *bp, newoff;
+	register int n;
+	u_short pairlen;
+
+	bp = (u_short *)bufp->page;
+	n = bp[0];
+
+	if (bp[ndx + 1] < REAL_KEY)
+		return (__big_delete(hashp, bufp));
+	if (ndx != 1)
+		newoff = bp[ndx - 1];
+	else
+		newoff = hashp->BSIZE;
+	pairlen = newoff - bp[ndx + 1];
+
+	if (ndx != (n - 1)) {
+		/* Hard Case -- need to shuffle keys */
+		register int i;
+		register char *src = bufp->page + (int)OFFSET(bp);
+		register char *dst = src + (int)pairlen;
+		memmove(dst, src, bp[ndx + 1] - OFFSET(bp));
+
+		/* Now adjust the pointers */
+		for (i = ndx + 2; i <= n; i += 2) {
+			if (bp[i + 1] == OVFLPAGE) {
+				bp[i - 2] = bp[i];
+				bp[i - 1] = bp[i + 1];
+			} else {
+				bp[i - 2] = bp[i] + pairlen;
+				bp[i - 1] = bp[i + 1] + pairlen;
+			}
+		}
+	}
+	/* Finally adjust the page data */
+	bp[n] = OFFSET(bp) + pairlen;
+	bp[n - 1] = bp[n + 1] + pairlen + 2 * sizeof(u_short);
+	bp[0] = n - 2;
+	hashp->NKEYS--;
+
+	bufp->flags |= BUF_MOD;
+	return (0);
+}
+/*
+ * Returns:
+ *	 0 ==> OK
+ *	-1 ==> Error
+ */
+extern int
+__split_page(hashp, obucket, nbucket)
+	HTAB *hashp;
+	u_int obucket, nbucket;
+{
+	register BUFHEAD *new_bufp, *old_bufp;
+	register u_short *ino;
+	register char *np;
+	DBT key, val;
+	int n, ndx, retval;
+	u_short copyto, diff, off, moved;
+	char *op;
+
+	copyto = (u_short)hashp->BSIZE;
+	off = (u_short)hashp->BSIZE;
+	old_bufp = __get_buf(hashp, obucket, NULL, 0);
+	if (old_bufp == NULL)
+		return (-1);
+	new_bufp = __get_buf(hashp, nbucket, NULL, 0);
+	if (new_bufp == NULL)
+		return (-1);
+
+	old_bufp->flags |= (BUF_MOD | BUF_PIN);
+	new_bufp->flags |= (BUF_MOD | BUF_PIN);
+
+	ino = (u_short *)(op = old_bufp->page);
+	np = new_bufp->page;
+
+	moved = 0;
+
+	for (n = 1, ndx = 1; n < ino[0]; n += 2) {
+		if (ino[n + 1] < REAL_KEY) {
+			retval = ugly_split(hashp, obucket, old_bufp, new_bufp,
+			    (int)copyto, (int)moved);
+			old_bufp->flags &= ~BUF_PIN;
+			new_bufp->flags &= ~BUF_PIN;
+			return (retval);
+
+		}
+		key.data = (u_char *)op + ino[n];
+		key.size = off - ino[n];
+
+		if (__call_hash(hashp, key.data, key.size) == obucket) {
+			/* Don't switch page */
+			diff = copyto - off;
+			if (diff) {
+				copyto = ino[n + 1] + diff;
+				memmove(op + copyto, op + ino[n + 1],
+				    off - ino[n + 1]);
+				ino[ndx] = copyto + ino[n] - ino[n + 1];
+				ino[ndx + 1] = copyto;
+			} else
+				copyto = ino[n + 1];
+			ndx += 2;
+		} else {
+			/* Switch page */
+			val.data = (u_char *)op + ino[n + 1];
+			val.size = ino[n] - ino[n + 1];
+			putpair(np, &key, &val);
+			moved += 2;
+		}
+
+		off = ino[n + 1];
+	}
+
+	/* Now clean up the page */
+	ino[0] -= moved;
+	FREESPACE(ino) = copyto - sizeof(u_short) * (ino[0] + 3);
+	OFFSET(ino) = copyto;
+
+#ifdef DEBUG3
+	(void)fprintf(stderr, "split %d/%d\n",
+	    ((u_short *)np)[0] / 2,
+	    ((u_short *)op)[0] / 2);
+#endif
+	/* unpin both pages */
+	old_bufp->flags &= ~BUF_PIN;
+	new_bufp->flags &= ~BUF_PIN;
+	return (0);
+}
+
+/*
+ * Called when we encounter an overflow or big key/data page during split
+ * handling.  This is special cased since we have to begin checking whether
+ * the key/data pairs fit on their respective pages and because we may need
+ * overflow pages for both the old and new pages.
+ *
+ * The first page might be a page with regular key/data pairs in which case
+ * we have a regular overflow condition and just need to go on to the next
+ * page or it might be a big key/data pair in which case we need to fix the
+ * big key/data pair.
+ *
+ * Returns:
+ *	 0 ==> success
+ *	-1 ==> failure
+ */
+static int
+ugly_split(hashp, obucket, old_bufp, new_bufp, copyto, moved)
+	HTAB *hashp;
+	u_int obucket;	/* Same as __split_page. */
+	BUFHEAD *old_bufp, *new_bufp;
+	int copyto;	/* First byte on page which contains key/data values. */
+	int moved;	/* Number of pairs moved to new page. */
+{
+	register BUFHEAD *bufp;	/* Buffer header for ino */
+	register u_short *ino;	/* Page keys come off of */
+	register u_short *np;	/* New page */
+	register u_short *op;	/* Page keys go on to if they aren't moving */
+
+	BUFHEAD *last_bfp;	/* Last buf header OVFL needing to be freed */
+	DBT key, val;
+	SPLIT_RETURN ret;
+	u_short n, off, ov_addr, scopyto;
+	char *cino;		/* Character value of ino */
+
+	bufp = old_bufp;
+	ino = (u_short *)old_bufp->page;
+	np = (u_short *)new_bufp->page;
+	op = (u_short *)old_bufp->page;
+	last_bfp = NULL;
+	scopyto = (u_short)copyto;	/* ANSI */
+
+	n = ino[0] - 1;
+	while (n < ino[0]) {
+		if (ino[2] < REAL_KEY && ino[2] != OVFLPAGE) {
+			if (__big_split(hashp, old_bufp,
+			    new_bufp, bufp, bufp->addr, obucket, &ret))
+				return (-1);
+			old_bufp = ret.oldp;
+			if (!old_bufp)
+				return (-1);
+			op = (u_short *)old_bufp->page;
+			new_bufp = ret.newp;
+			if (!new_bufp)
+				return (-1);
+			np = (u_short *)new_bufp->page;
+			bufp = ret.nextp;
+			if (!bufp)
+				return (0);
+			cino = (char *)bufp->page;
+			ino = (u_short *)cino;
+			last_bfp = ret.nextp;
+		} else if (ino[n + 1] == OVFLPAGE) {
+			ov_addr = ino[n];
+			/*
+			 * Fix up the old page -- the extra 2 are the fields
+			 * which contained the overflow information.
+			 */
+			ino[0] -= (moved + 2);
+			FREESPACE(ino) =
+			    scopyto - sizeof(u_short) * (ino[0] + 3);
+			OFFSET(ino) = scopyto;
+
+			bufp = __get_buf(hashp, ov_addr, bufp, 0);
+			if (!bufp)
+				return (-1);
+
+			ino = (u_short *)bufp->page;
+			n = 1;
+			scopyto = hashp->BSIZE;
+			moved = 0;
+
+			if (last_bfp)
+				__free_ovflpage(hashp, last_bfp);
+			last_bfp = bufp;
+		}
+		/* Move regular sized pairs of there are any */
+		off = hashp->BSIZE;
+		for (n = 1; (n < ino[0]) && (ino[n + 1] >= REAL_KEY); n += 2) {
+			cino = (char *)ino;
+			key.data = (u_char *)cino + ino[n];
+			key.size = off - ino[n];
+			val.data = (u_char *)cino + ino[n + 1];
+			val.size = ino[n] - ino[n + 1];
+			off = ino[n + 1];
+
+			if (__call_hash(hashp, key.data, key.size) == obucket) {
+				/* Keep on old page */
+				if (PAIRFITS(op, (&key), (&val)))
+					putpair((char *)op, &key, &val);
+				else {
+					old_bufp =
+					    __add_ovflpage(hashp, old_bufp);
+					if (!old_bufp)
+						return (-1);
+					op = (u_short *)old_bufp->page;
+					putpair((char *)op, &key, &val);
+				}
+				old_bufp->flags |= BUF_MOD;
+			} else {
+				/* Move to new page */
+				if (PAIRFITS(np, (&key), (&val)))
+					putpair((char *)np, &key, &val);
+				else {
+					new_bufp =
+					    __add_ovflpage(hashp, new_bufp);
+					if (!new_bufp)
+						return (-1);
+					np = (u_short *)new_bufp->page;
+					putpair((char *)np, &key, &val);
+				}
+				new_bufp->flags |= BUF_MOD;
+			}
+		}
+	}
+	if (last_bfp)
+		__free_ovflpage(hashp, last_bfp);
+	return (0);
+}
+
+/*
+ * Add the given pair to the page
+ *
+ * Returns:
+ *	0 ==> OK
+ *	1 ==> failure
+ */
+extern int
+__addel(hashp, bufp, key, val)
+	HTAB *hashp;
+	BUFHEAD *bufp;
+	const DBT *key, *val;
+{
+	register u_short *bp, *sop;
+	int do_expand;
+
+	bp = (u_short *)bufp->page;
+	do_expand = 0;
+	while (bp[0] && (bp[2] < REAL_KEY || bp[bp[0]] < REAL_KEY))
+		/* Exception case */
+		if (bp[2] == FULL_KEY_DATA && bp[0] == 2)
+			/* This is the last page of a big key/data pair
+			   and we need to add another page */
+			break;
+		else if (bp[2] < REAL_KEY && bp[bp[0]] != OVFLPAGE) {
+			bufp = __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
+			if (!bufp)
+				return (-1);
+			bp = (u_short *)bufp->page;
+		} else
+			/* Try to squeeze key on this page */
+			if (FREESPACE(bp) > PAIRSIZE(key, val)) {
+				squeeze_key(bp, key, val);
+				return (0);
+			} else {
+				bufp = __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
+				if (!bufp)
+					return (-1);
+				bp = (u_short *)bufp->page;
+			}
+
+	if (PAIRFITS(bp, key, val))
+		putpair(bufp->page, key, val);
+	else {
+		do_expand = 1;
+		bufp = __add_ovflpage(hashp, bufp);
+		if (!bufp)
+			return (-1);
+		sop = (u_short *)bufp->page;
+
+		if (PAIRFITS(sop, key, val))
+			putpair((char *)sop, key, val);
+		else
+			if (__big_insert(hashp, bufp, key, val))
+				return (-1);
+	}
+	bufp->flags |= BUF_MOD;
+	/*
+	 * If the average number of keys per bucket exceeds the fill factor,
+	 * expand the table.
+	 */
+	hashp->NKEYS++;
+	if (do_expand ||
+	    (hashp->NKEYS / (hashp->MAX_BUCKET + 1) > hashp->FFACTOR))
+		return (__expand_table(hashp));
+	return (0);
+}
+
+/*
+ *
+ * Returns:
+ *	pointer on success
+ *	NULL on error
+ */
+extern BUFHEAD *
+__add_ovflpage(hashp, bufp)
+	HTAB *hashp;
+	BUFHEAD *bufp;
+{
+	register u_short *sp;
+	u_short ndx, ovfl_num;
+#ifdef DEBUG1
+	int tmp1, tmp2;
+#endif
+	sp = (u_short *)bufp->page;
+
+	/* Check if we are dynamically determining the fill factor */
+	if (hashp->FFACTOR == DEF_FFACTOR) {
+		hashp->FFACTOR = sp[0] >> 1;
+		if (hashp->FFACTOR < MIN_FFACTOR)
+			hashp->FFACTOR = MIN_FFACTOR;
+	}
+	bufp->flags |= BUF_MOD;
+	ovfl_num = overflow_page(hashp);
+#ifdef DEBUG1
+	tmp1 = bufp->addr;
+	tmp2 = bufp->ovfl ? bufp->ovfl->addr : 0;
+#endif
+	if (!ovfl_num || !(bufp->ovfl = __get_buf(hashp, ovfl_num, bufp, 1)))
+		return (NULL);
+	bufp->ovfl->flags |= BUF_MOD;
+#ifdef DEBUG1
+	(void)fprintf(stderr, "ADDOVFLPAGE: %d->ovfl was %d is now %d\n",
+	    tmp1, tmp2, bufp->ovfl->addr);
+#endif
+	ndx = sp[0];
+	/*
+	 * Since a pair is allocated on a page only if there's room to add
+	 * an overflow page, we know that the OVFL information will fit on
+	 * the page.
+	 */
+	sp[ndx + 4] = OFFSET(sp);
+	sp[ndx + 3] = FREESPACE(sp) - OVFLSIZE;
+	sp[ndx + 1] = ovfl_num;
+	sp[ndx + 2] = OVFLPAGE;
+	sp[0] = ndx + 2;
+#ifdef HASH_STATISTICS
+	hash_overflows++;
+#endif
+	return (bufp->ovfl);
+}
+
+/*
+ * Returns:
+ *	 0 indicates SUCCESS
+ *	-1 indicates FAILURE
+ */
+extern int
+__get_page(hashp, p, bucket, is_bucket, is_disk, is_bitmap)
+	HTAB *hashp;
+	char *p;
+	u_int bucket;
+	int is_bucket, is_disk, is_bitmap;
+{
+	register int fd, page, size;
+	int rsize;
+	u_short *bp;
+
+	fd = hashp->fp;
+	size = hashp->BSIZE;
+
+	if ((fd == -1) || !is_disk) {
+		PAGE_INIT(p);
+		return (0);
+	}
+	if (is_bucket)
+		page = BUCKET_TO_PAGE(bucket);
+	else
+		page = OADDR_TO_PAGE(bucket);
+	if ((lseek(fd, (off_t)page << hashp->BSHIFT, SEEK_SET) == -1) ||
+	    ((rsize = read(fd, p, size)) == -1))
+		return (-1);
+	bp = (u_short *)p;
+	if (!rsize)
+		bp[0] = 0;	/* We hit the EOF, so initialize a new page */
+	else
+		if (rsize != size) {
+			errno = EFTYPE;
+			return (-1);
+		}
+	if (!is_bitmap && !bp[0]) {
+		PAGE_INIT(p);
+	} else
+		if (hashp->LORDER != BYTE_ORDER) {
+			register int i, max;
+
+			if (is_bitmap) {
+				max = hashp->BSIZE >> 2; /* divide by 4 */
+				for (i = 0; i < max; i++)
+					M_32_SWAP(((long *)p)[i]);
+			} else {
+				M_16_SWAP(bp[0]);
+				max = bp[0] + 2;
+				for (i = 1; i <= max; i++)
+					M_16_SWAP(bp[i]);
+			}
+		}
+	return (0);
+}
+
+/*
+ * Write page p to disk
+ *
+ * Returns:
+ *	 0 ==> OK
+ *	-1 ==>failure
+ */
+extern int
+__put_page(hashp, p, bucket, is_bucket, is_bitmap)
+	HTAB *hashp;
+	char *p;
+	u_int bucket;
+	int is_bucket, is_bitmap;
+{
+	register int fd, page, size;
+	int wsize;
+
+	size = hashp->BSIZE;
+	if ((hashp->fp == -1) && open_temp(hashp))
+		return (-1);
+	fd = hashp->fp;
+
+	if (hashp->LORDER != BYTE_ORDER) {
+		register int i;
+		register int max;
+
+		if (is_bitmap) {
+			max = hashp->BSIZE >> 2;	/* divide by 4 */
+			for (i = 0; i < max; i++)
+				M_32_SWAP(((long *)p)[i]);
+		} else {
+			max = ((u_short *)p)[0] + 2;
+			for (i = 0; i <= max; i++)
+				M_16_SWAP(((u_short *)p)[i]);
+		}
+	}
+	if (is_bucket)
+		page = BUCKET_TO_PAGE(bucket);
+	else
+		page = OADDR_TO_PAGE(bucket);
+	if ((lseek(fd, (off_t)page << hashp->BSHIFT, SEEK_SET) == -1) ||
+	    ((wsize = write(fd, p, size)) == -1))
+		/* Errno is set */
+		return (-1);
+	if (wsize != size) {
+		errno = EFTYPE;
+		return (-1);
+	}
+	return (0);
+}
+
+#define BYTE_MASK	((1 << INT_BYTE_SHIFT) -1)
+/*
+ * Initialize a new bitmap page.  Bitmap pages are left in memory
+ * once they are read in.
+ */
+extern int
+__init_bitmap(hashp, pnum, nbits, ndx)
+	HTAB *hashp;
+	int pnum, nbits, ndx;
+{
+	u_long *ip;
+	int clearbytes, clearints;
+
+	if ((ip = (u_long *)malloc(hashp->BSIZE)) == NULL)
+		return (1);
+	hashp->nmaps++;
+	clearints = ((nbits - 1) >> INT_BYTE_SHIFT) + 1;
+	clearbytes = clearints << INT_TO_BYTE;
+	(void)memset((char *)ip, 0, clearbytes);
+	(void)memset(((char *)ip) + clearbytes, 0xFF,
+	    hashp->BSIZE - clearbytes);
+	ip[clearints - 1] = ALL_SET << (nbits & BYTE_MASK);
+	SETBIT(ip, 0);
+	hashp->BITMAPS[ndx] = (u_short)pnum;
+	hashp->mapp[ndx] = ip;
+	return (0);
+}
+
+static u_long
+first_free(map)
+	u_long map;
+{
+	register u_long i, mask;
+
+	mask = 0x1;
+	for (i = 0; i < BITS_PER_MAP; i++) {
+		if (!(mask & map))
+			return (i);
+		mask = mask << 1;
+	}
+	return (i);
+}
+
+static u_short
+overflow_page(hashp)
+	HTAB *hashp;
+{
+	register u_long *freep;
+	register int max_free, offset, splitnum;
+	u_short addr;
+	int bit, first_page, free_bit, free_page, i, in_use_bits, j;
+#ifdef DEBUG2
+	int tmp1, tmp2;
+#endif
+	splitnum = hashp->OVFL_POINT;
+	max_free = hashp->SPARES[splitnum];
+
+	free_page = (max_free - 1) >> (hashp->BSHIFT + BYTE_SHIFT);
+	free_bit = (max_free - 1) & ((hashp->BSIZE << BYTE_SHIFT) - 1);
+
+	/* Look through all the free maps to find the first free block */
+	first_page = hashp->LAST_FREED >>(hashp->BSHIFT + BYTE_SHIFT);
+	for ( i = first_page; i <= free_page; i++ ) {
+		if (!(freep = (u_long *)hashp->mapp[i]) &&
+		    !(freep = fetch_bitmap(hashp, i)))
+			return (NULL);
+		if (i == free_page)
+			in_use_bits = free_bit;
+		else
+			in_use_bits = (hashp->BSIZE << BYTE_SHIFT) - 1;
+
+		if (i == first_page) {
+			bit = hashp->LAST_FREED &
+			    ((hashp->BSIZE << BYTE_SHIFT) - 1);
+			j = bit / BITS_PER_MAP;
+			bit = bit & ~(BITS_PER_MAP - 1);
+		} else {
+			bit = 0;
+			j = 0;
+		}
+		for (; bit <= in_use_bits; j++, bit += BITS_PER_MAP)
+			if (freep[j] != ALL_SET)
+				goto found;
+	}
+
+	/* No Free Page Found */
+	hashp->LAST_FREED = hashp->SPARES[splitnum];
+	hashp->SPARES[splitnum]++;
+	offset = hashp->SPARES[splitnum] -
+	    (splitnum ? hashp->SPARES[splitnum - 1] : 0);
+
+#define	OVMSG	"HASH: Out of overflow pages.  Increase page size\n"
+	if (offset > SPLITMASK) {
+		if (++splitnum >= NCACHED) {
+			(void)write(STDERR_FILENO, OVMSG, sizeof(OVMSG) - 1);
+			return (NULL);
+		}
+		hashp->OVFL_POINT = splitnum;
+		hashp->SPARES[splitnum] = hashp->SPARES[splitnum-1];
+		hashp->SPARES[splitnum-1]--;
+		offset = 1;
+	}
+
+	/* Check if we need to allocate a new bitmap page */
+	if (free_bit == (hashp->BSIZE << BYTE_SHIFT) - 1) {
+		free_page++;
+		if (free_page >= NCACHED) {
+			(void)write(STDERR_FILENO, OVMSG, sizeof(OVMSG) - 1);
+			return (NULL);
+		}
+		/*
+		 * This is tricky.  The 1 indicates that you want the new page
+		 * allocated with 1 clear bit.  Actually, you are going to
+		 * allocate 2 pages from this map.  The first is going to be
+		 * the map page, the second is the overflow page we were
+		 * looking for.  The init_bitmap routine automatically, sets
+		 * the first bit of itself to indicate that the bitmap itself
+		 * is in use.  We would explicitly set the second bit, but
+		 * don't have to if we tell init_bitmap not to leave it clear
+		 * in the first place.
+		 */
+		if (__init_bitmap(hashp, (int)OADDR_OF(splitnum, offset),
+		    1, free_page))
+			return (NULL);
+		hashp->SPARES[splitnum]++;
+#ifdef DEBUG2
+		free_bit = 2;
+#endif
+		offset++;
+		if (offset > SPLITMASK) {
+			if (++splitnum >= NCACHED) {
+				(void)write(STDERR_FILENO, OVMSG,
+				    sizeof(OVMSG) - 1);
+				return (NULL);
+			}
+			hashp->OVFL_POINT = splitnum;
+			hashp->SPARES[splitnum] = hashp->SPARES[splitnum-1];
+			hashp->SPARES[splitnum-1]--;
+			offset = 0;
+		}
+	} else {
+		/*
+		 * Free_bit addresses the last used bit.  Bump it to address
+		 * the first available bit.
+		 */
+		free_bit++;
+		SETBIT(freep, free_bit);
+	}
+
+	/* Calculate address of the new overflow page */
+	addr = OADDR_OF(splitnum, offset);
+#ifdef DEBUG2
+	(void)fprintf(stderr, "OVERFLOW_PAGE: ADDR: %d BIT: %d PAGE %d\n",
+	    addr, free_bit, free_page);
+#endif
+	return (addr);
+
+found:
+	bit = bit + first_free(freep[j]);
+	SETBIT(freep, bit);
+#ifdef DEBUG2
+	tmp1 = bit;
+	tmp2 = i;
+#endif
+	/*
+	 * Bits are addressed starting with 0, but overflow pages are addressed
+	 * beginning at 1. Bit is a bit addressnumber, so we need to increment
+	 * it to convert it to a page number.
+	 */
+	bit = 1 + bit + (i * (hashp->BSIZE << BYTE_SHIFT));
+	if (bit >= hashp->LAST_FREED)
+		hashp->LAST_FREED = bit - 1;
+
+	/* Calculate the split number for this page */
+	for (i = 0; (i < splitnum) && (bit > hashp->SPARES[i]); i++);
+	offset = (i ? bit - hashp->SPARES[i - 1] : bit);
+	if (offset >= SPLITMASK)
+		return (NULL);	/* Out of overflow pages */
+	addr = OADDR_OF(i, offset);
+#ifdef DEBUG2
+	(void)fprintf(stderr, "OVERFLOW_PAGE: ADDR: %d BIT: %d PAGE %d\n",
+	    addr, tmp1, tmp2);
+#endif
+
+	/* Allocate and return the overflow page */
+	return (addr);
+}
+
+/*
+ * Mark this overflow page as free.
+ */
+extern void
+__free_ovflpage(hashp, obufp)
+	HTAB *hashp;
+	BUFHEAD *obufp;
+{
+	register u_short addr;
+	u_long *freep;
+	int bit_address, free_page, free_bit;
+	u_short ndx;
+
+	addr = obufp->addr;
+#ifdef DEBUG1
+	(void)fprintf(stderr, "Freeing %d\n", addr);
+#endif
+	ndx = (((u_short)addr) >> SPLITSHIFT);
+	bit_address =
+	    (ndx ? hashp->SPARES[ndx - 1] : 0) + (addr & SPLITMASK) - 1;
+	 if (bit_address < hashp->LAST_FREED)
+		hashp->LAST_FREED = bit_address;
+	free_page = (bit_address >> (hashp->BSHIFT + BYTE_SHIFT));
+	free_bit = bit_address & ((hashp->BSIZE << BYTE_SHIFT) - 1);
+
+	if (!(freep = hashp->mapp[free_page]))
+		freep = fetch_bitmap(hashp, free_page);
+#ifdef DEBUG
+	/*
+	 * This had better never happen.  It means we tried to read a bitmap
+	 * that has already had overflow pages allocated off it, and we
+	 * failed to read it from the file.
+	 */
+	if (!freep)
+		assert(0);
+#endif
+	CLRBIT(freep, free_bit);
+#ifdef DEBUG2
+	(void)fprintf(stderr, "FREE_OVFLPAGE: ADDR: %d BIT: %d PAGE %d\n",
+	    obufp->addr, free_bit, free_page);
+#endif
+	__reclaim_buf(hashp, obufp);
+}
+
+/*
+ * Returns:
+ *	 0 success
+ *	-1 failure
+ */
+static int
+open_temp(hashp)
+	HTAB *hashp;
+{
+	sigset_t set, oset;
+	static char namestr[] = "_hashXXXXXX";
+
+	/* Block signals; make sure file goes away at process exit. */
+	(void)sigfillset(&set);
+	(void)sigprocmask(SIG_BLOCK, &set, &oset);
+	if ((hashp->fp = mkstemp(namestr)) != -1) {
+		(void)unlink(namestr);
+		(void)fcntl(hashp->fp, F_SETFD, 1);
+	}
+	(void)sigprocmask(SIG_SETMASK, &oset, (sigset_t *)NULL);
+	return (hashp->fp != -1 ? 0 : -1);
+}
+
+/*
+ * We have to know that the key will fit, but the last entry on the page is
+ * an overflow pair, so we need to shift things.
+ */
+static void
+squeeze_key(sp, key, val)
+	u_short *sp;
+	const DBT *key, *val;
+{
+	register char *p;
+	u_short free_space, n, off, pageno;
+
+	p = (char *)sp;
+	n = sp[0];
+	free_space = FREESPACE(sp);
+	off = OFFSET(sp);
+
+	pageno = sp[n - 1];
+	off -= key->size;
+	sp[n - 1] = off;
+	memmove(p + off, key->data, key->size);
+	off -= val->size;
+	sp[n] = off;
+	memmove(p + off, val->data, val->size);
+	sp[0] = n + 2;
+	sp[n + 1] = pageno;
+	sp[n + 2] = OVFLPAGE;
+	FREESPACE(sp) = free_space - PAIRSIZE(key, val);
+	OFFSET(sp) = off;
+}
+
+static u_long *
+fetch_bitmap(hashp, ndx)
+	HTAB *hashp;
+	int ndx;
+{
+	if (ndx >= hashp->nmaps)
+		return (NULL);
+	if ((hashp->mapp[ndx] = (u_long *)malloc(hashp->BSIZE)) == NULL)
+		return (NULL);
+	if (__get_page(hashp,
+	    (char *)hashp->mapp[ndx], hashp->BITMAPS[ndx], 0, 1, 1)) {
+		free(hashp->mapp[ndx]);
+		return (NULL);
+	}
+	return (hashp->mapp[ndx]);
+}
+
+#ifdef DEBUG4
+int
+print_chain(addr)
+	int addr;
+{
+	BUFHEAD *bufp;
+	short *bp, oaddr;
+
+	(void)fprintf(stderr, "%d ", addr);
+	bufp = __get_buf(hashp, addr, NULL, 0);
+	bp = (short *)bufp->page;
+	while (bp[0] && ((bp[bp[0]] == OVFLPAGE) ||
+		((bp[0] > 2) && bp[2] < REAL_KEY))) {
+		oaddr = bp[bp[0] - 1];
+		(void)fprintf(stderr, "%d ", (int)oaddr);
+		bufp = __get_buf(hashp, (int)oaddr, bufp, 0);
+		bp = (short *)bufp->page;
+	}
+	(void)fprintf(stderr, "\n");
+}
+#endif
diff --git a/lib/libc/db/hash/hsearch.c b/lib/libc/db/hash/hsearch.c
new file mode 100644
index 0000000..e4914b1
--- /dev/null
+++ b/lib/libc/db/hash/hsearch.c
@@ -0,0 +1,107 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)hsearch.c	8.3 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <fcntl.h>
+#include <string.h>
+
+#include <db.h>
+#include "search.h"
+
+static DB *dbp = NULL;
+static ENTRY retval;
+
+extern int
+hcreate(nel)
+	u_int nel;
+{
+	HASHINFO info;
+
+	info.nelem = nel;
+	info.bsize = 256;
+	info.ffactor = 8;
+	info.cachesize = NULL;
+	info.hash = NULL;
+	info.lorder = 0;
+	dbp = (DB *)__hash_open(NULL, O_CREAT | O_RDWR, 0600, &info, 0);
+	return ((int)dbp);
+}
+
+extern ENTRY *
+hsearch(item, action)
+	ENTRY item;
+	ACTION action;
+{
+	DBT key, val;
+	int status;
+
+	if (!dbp)
+		return (NULL);
+	key.data = (u_char *)item.key;
+	key.size = strlen(item.key) + 1;
+
+	if (action == ENTER) {
+		val.data = (u_char *)item.data;
+		val.size = strlen(item.data) + 1;
+		status = (dbp->put)(dbp, &key, &val, R_NOOVERWRITE);
+		if (status)
+			return (NULL);
+	} else {
+		/* FIND */
+		status = (dbp->get)(dbp, &key, &val, 0);
+		if (status)
+			return (NULL);
+		else
+			item.data = (char *)val.data;
+	}
+	retval.key = item.key;
+	retval.data = item.data;
+	return (&retval);
+}
+
+extern void
+hdestroy()
+{
+	if (dbp) {
+		(void)(dbp->close)(dbp);
+		dbp = NULL;
+	}
+}
diff --git a/lib/libc/db/hash/ndbm.c b/lib/libc/db/hash/ndbm.c
new file mode 100644
index 0000000..89b9916
--- /dev/null
+++ b/lib/libc/db/hash/ndbm.c
@@ -0,0 +1,202 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ndbm.c	8.2 (Berkeley) 9/11/93";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * This package provides a dbm compatible interface to the new hashing
+ * package described in db(3).
+ */
+
+#include <sys/param.h>
+
+#include <ndbm.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "hash.h"
+
+/*
+ * Returns:
+ * 	*DBM on success
+ *	 NULL on failure
+ */
+extern DBM *
+dbm_open(file, flags, mode)
+	const char *file;
+	int flags, mode;
+{
+	HASHINFO info;
+	char path[MAXPATHLEN];
+
+	info.bsize = 4096;
+	info.ffactor = 40;
+	info.nelem = 1;
+	info.cachesize = NULL;
+	info.hash = NULL;
+	info.lorder = 0;
+	(void)strcpy(path, file);
+	(void)strcat(path, DBM_SUFFIX);
+	return ((DBM *)__hash_open(path, flags, mode, &info, 0));
+}
+
+extern void
+dbm_close(db)
+	DBM *db;
+{
+	(void)(db->close)(db);
+}
+
+/*
+ * Returns:
+ *	DATUM on success
+ *	NULL on failure
+ */
+extern datum
+dbm_fetch(db, key)
+	DBM *db;
+	datum key;
+{
+	datum retval;
+	int status;
+
+	status = (db->get)(db, (DBT *)&key, (DBT *)&retval, 0);
+	if (status) {
+		retval.dptr = NULL;
+		retval.dsize = 0;
+	}
+	return (retval);
+}
+
+/*
+ * Returns:
+ *	DATUM on success
+ *	NULL on failure
+ */
+extern datum
+dbm_firstkey(db)
+	DBM *db;
+{
+	int status;
+	datum retdata, retkey;
+
+	status = (db->seq)(db, (DBT *)&retkey, (DBT *)&retdata, R_FIRST);
+	if (status)
+		retkey.dptr = NULL;
+	return (retkey);
+}
+
+/*
+ * Returns:
+ *	DATUM on success
+ *	NULL on failure
+ */
+extern datum
+dbm_nextkey(db)
+	DBM *db;
+{
+	int status;
+	datum retdata, retkey;
+
+	status = (db->seq)(db, (DBT *)&retkey, (DBT *)&retdata, R_NEXT);
+	if (status)
+		retkey.dptr = NULL;
+	return (retkey);
+}
+/*
+ * Returns:
+ *	 0 on success
+ *	<0 failure
+ */
+extern int
+dbm_delete(db, key)
+	DBM *db;
+	datum key;
+{
+	int status;
+
+	status = (db->del)(db, (DBT *)&key, 0);
+	if (status)
+		return (-1);
+	else
+		return (0);
+}
+
+/*
+ * Returns:
+ *	 0 on success
+ *	<0 failure
+ *	 1 if DBM_INSERT and entry exists
+ */
+extern int
+dbm_store(db, key, content, flags)
+	DBM *db;
+	datum key, content;
+	int flags;
+{
+	return ((db->put)(db, (DBT *)&key, (DBT *)&content,
+	    (flags == DBM_INSERT) ? R_NOOVERWRITE : 0));
+}
+
+extern int
+dbm_error(db)
+	DBM *db;
+{
+	HTAB *hp;
+
+	hp = (HTAB *)db->internal;
+	return (hp->errno);
+}
+
+extern int
+dbm_clearerr(db)
+	DBM *db;
+{
+	HTAB *hp;
+
+	hp = (HTAB *)db->internal;
+	hp->errno = 0;
+	return (0);
+}
+
+extern int
+dbm_dirfno(db)
+	DBM *db;
+{
+	return(((HTAB *)db->internal)->fp);
+}
diff --git a/lib/libc/db/hash/page.h b/lib/libc/db/hash/page.h
new file mode 100644
index 0000000..dae82ae
--- /dev/null
+++ b/lib/libc/db/hash/page.h
@@ -0,0 +1,92 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)page.h	8.1 (Berkeley) 6/6/93
+ */
+
+/*
+ * Definitions for hashing page file format.
+ */
+
+/*
+ * routines dealing with a data page
+ *
+ * page format:
+ *	+------------------------------+
+ * p	| n | keyoff | datoff | keyoff |
+ * 	+------------+--------+--------+
+ *	| datoff | free  |  ptr  | --> |
+ *	+--------+---------------------+
+ *	|	 F R E E A R E A       |
+ *	+--------------+---------------+
+ *	|  <---- - - - | data          |
+ *	+--------+-----+----+----------+
+ *	|  key   | data     | key      |
+ *	+--------+----------+----------+
+ *
+ * Pointer to the free space is always:  p[p[0] + 2]
+ * Amount of free space on the page is:  p[p[0] + 1]
+ */
+
+/*
+ * How many bytes required for this pair?
+ *	2 shorts in the table at the top of the page + room for the
+ *	key and room for the data
+ *
+ * We prohibit entering a pair on a page unless there is also room to append
+ * an overflow page. The reason for this it that you can get in a situation
+ * where a single key/data pair fits on a page, but you can't append an
+ * overflow page and later you'd have to split the key/data and handle like
+ * a big pair.
+ * You might as well do this up front.
+ */
+
+#define	PAIRSIZE(K,D)	(2*sizeof(u_short) + (K)->size + (D)->size)
+#define BIGOVERHEAD	(4*sizeof(u_short))
+#define KEYSIZE(K)	(4*sizeof(u_short) + (K)->size);
+#define OVFLSIZE	(2*sizeof(u_short))
+#define FREESPACE(P)	((P)[(P)[0]+1])
+#define	OFFSET(P)	((P)[(P)[0]+2])
+#define PAIRFITS(P,K,D) \
+	(((P)[2] >= REAL_KEY) && \
+	    (PAIRSIZE((K),(D)) + OVFLSIZE) <= FREESPACE((P)))
+#define PAGE_META(N)	(((N)+3) * sizeof(u_short))
+
+typedef struct {
+	BUFHEAD *newp;
+	BUFHEAD *oldp;
+	BUFHEAD *nextp;
+	u_short next_addr;
+}       SPLIT_RETURN;
diff --git a/lib/libc/db/hash/search.h b/lib/libc/db/hash/search.h
new file mode 100644
index 0000000..4d3b914
--- /dev/null
+++ b/lib/libc/db/hash/search.h
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)search.h	8.1 (Berkeley) 6/4/93
+ */
+
+/* Backward compatibility to hsearch interface. */
+typedef struct entry {
+	char *key;
+	char *data;
+} ENTRY;
+
+typedef enum {
+	FIND, ENTER
+} ACTION;
+
+int	 hcreate __P((unsigned int));
+void	 hdestroy __P((void));
+ENTRY	*hsearch __P((ENTRY, ACTION));
diff --git a/lib/libc/db/man/Makefile.inc b/lib/libc/db/man/Makefile.inc
new file mode 100644
index 0000000..f55b9f4
--- /dev/null
+++ b/lib/libc/db/man/Makefile.inc
@@ -0,0 +1,8 @@
+#       @(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+
+.PATH: ${.CURDIR}/db/man
+
+# mpool.3
+MAN3+=	db/man/btree.3 db/man/dbopen.3 db/man/hash.3 db/man/recno.3
+MAN3+=	db/man/mpool.3
+MLINKS+= dbopen.3 db.3
diff --git a/lib/libc/db/man/btree.3 b/lib/libc/db/man/btree.3
new file mode 100644
index 0000000..a51e1e5
--- /dev/null
+++ b/lib/libc/db/man/btree.3
@@ -0,0 +1,226 @@
+.\" Copyright (c) 1990, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)btree.3	8.3 (Berkeley) 2/21/94
+.\"
+.TH BTREE 3 "February 21, 1994"
+.\".UC 7
+.SH NAME
+btree \- btree database access method
+.SH SYNOPSIS
+.nf
+.ft B
+#include <sys/types.h>
+#include <db.h>
+.ft R
+.fi
+.SH DESCRIPTION
+The routine
+.IR dbopen
+is the library interface to database files.
+One of the supported file formats is btree files.
+The general description of the database access methods is in
+.IR dbopen (3),
+this manual page describes only the btree specific information.
+.PP
+The btree data structure is a sorted, balanced tree structure storing
+associated key/data pairs.
+.PP
+The btree access method specific data structure provided to
+.I dbopen
+is defined in the <db.h> include file as follows:
+.PP
+typedef struct {
+.RS
+u_long flags;
+.br
+u_int cachesize;
+.br
+int maxkeypage;
+.br
+int minkeypage;
+.br
+u_int psize;
+.br
+int (*compare)(const DBT *key1, const DBT *key2);
+.br
+size_t (*prefix)(const DBT *key1, const DBT *key2);
+.br
+int lorder;
+.RE
+} BTREEINFO;
+.PP
+The elements of this structure are as follows:
+.TP
+flags
+The flag value is specified by
+.IR or 'ing
+any of the following values:
+.RS
+.TP
+R_DUP
+Permit duplicate keys in the tree, i.e. permit insertion if the key to be
+inserted already exists in the tree.
+The default behavior, as described in
+.IR dbopen (3),
+is to overwrite a matching key when inserting a new key or to fail if
+the R_NOOVERWRITE flag is specified.
+The R_DUP flag is overridden by the R_NOOVERWRITE flag, and if the
+R_NOOVERWRITE flag is specified, attempts to insert duplicate keys into
+the tree will fail.
+.IP
+If the database contains duplicate keys, the order of retrieval of
+key/data pairs is undefined if the
+.I get
+routine is used, however,
+.I seq
+routine calls with the R_CURSOR flag set will always return the logical
+``first'' of any group of duplicate keys.
+.RE
+.TP
+cachesize
+A suggested maximum size (in bytes) of the memory cache.
+This value is
+.B only
+advisory, and the access method will allocate more memory rather than fail.
+Since every search examines the root page of the tree, caching the most
+recently used pages substantially improves access time.
+In addition, physical writes are delayed as long as possible, so a moderate
+cache can reduce the number of I/O operations significantly.
+Obviously, using a cache increases (but only increases) the likelihood of
+corruption or lost data if the system crashes while a tree is being modified.
+If
+.I cachesize
+is 0 (no size is specified) a default cache is used.
+.TP
+maxkeypage
+The maximum number of keys which will be stored on any single page.
+Not currently implemented.
+.\" The maximum number of keys which will be stored on any single page.
+.\" Because of the way the btree data structure works,
+.\" .I maxkeypage
+.\" must always be greater than or equal to 2.
+.\" If
+.\" .I maxkeypage
+.\" is 0 (no maximum number of keys is specified) the page fill factor is
+.\" made as large as possible (which is almost invariably what is wanted).
+.TP
+minkeypage
+The minimum number of keys which will be stored on any single page.
+This value is used to determine which keys will be stored on overflow
+pages, i.e. if a key or data item is longer than the pagesize divided
+by the minkeypage value, it will be stored on overflow pages instead
+of in the page itself.
+If
+.I minkeypage
+is 0 (no minimum number of keys is specified) a value of 2 is used.
+.TP
+psize
+Page size is the size (in bytes) of the pages used for nodes in the tree.
+The minimum page size is 512 bytes and the maximum page size is 64K.
+If
+.I psize
+is 0 (no page size is specified) a page size is chosen based on the
+underlying file system I/O block size.
+.TP
+compare
+Compare is the key comparison function.
+It must return an integer less than, equal to, or greater than zero if the
+first key argument is considered to be respectively less than, equal to,
+or greater than the second key argument.
+The same comparison function must be used on a given tree every time it
+is opened.
+If
+.I compare
+is NULL (no comparison function is specified), the keys are compared
+lexically, with shorter keys considered less than longer keys.
+.TP
+prefix
+Prefix is the prefix comparison function.
+If specified, this routine must return the number of bytes of the second key
+argument which are necessary to determine that it is greater than the first
+key argument.
+If the keys are equal, the key length should be returned.
+Note, the usefulness of this routine is very data dependent, but, in some
+data sets can produce significantly reduced tree sizes and search times.
+If
+.I prefix
+is NULL (no prefix function is specified),
+.B and
+no comparison function is specified, a default lexical comparison routine
+is used.
+If
+.I prefix
+is NULL and a comparison routine is specified, no prefix comparison is
+done.
+.TP
+lorder
+The byte order for integers in the stored database metadata.
+The number should represent the order as an integer; for example, 
+big endian order would be the number 4,321.
+If
+.I lorder
+is 0 (no order is specified) the current host order is used.
+.PP
+If the file already exists (and the O_TRUNC flag is not specified), the
+values specified for the parameters flags, lorder and psize are ignored
+in favor of the values used when the tree was created.
+.PP
+Forward sequential scans of a tree are from the least key to the greatest.
+.PP
+Space freed up by deleting key/data pairs from the tree is never reclaimed,
+although it is normally made available for reuse.
+This means that the btree storage structure is grow-only.
+The only solutions are to avoid excessive deletions, or to create a fresh
+tree periodically from a scan of an existing one.
+.PP
+Searches, insertions, and deletions in a btree will all complete in
+O lg base N where base is the average fill factor.
+Often, inserting ordered data into btrees results in a low fill factor.
+This implementation has been modified to make ordered insertion the best
+case, resulting in a much better than normal page fill factor.
+.SH "SEE ALSO"
+.IR dbopen (3),
+.IR hash (3),
+.IR mpool (3),
+.IR recno (3)
+.sp
+.IR "The Ubiquitous B-tree" ,
+Douglas Comer, ACM Comput. Surv. 11, 2 (June 1979), 121-138.
+.sp
+.IR "Prefix B-trees" ,
+Bayer and Unterauer, ACM Transactions on Database Systems, Vol. 2, 1
+(March 1977), 11-26.
+.sp
+.IR "The Art of Computer Programming Vol. 3: Sorting and Searching" , 
+D.E. Knuth, 1968, pp 471-480.
+.SH BUGS
+Only big and little endian byte order is supported.
diff --git a/lib/libc/db/man/dbopen.3 b/lib/libc/db/man/dbopen.3
new file mode 100644
index 0000000..f06a4ef
--- /dev/null
+++ b/lib/libc/db/man/dbopen.3
@@ -0,0 +1,476 @@
+.\" Copyright (c) 1990, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)dbopen.3	8.5 (Berkeley) 1/2/94
+.\"
+.TH DBOPEN 3 "January 2, 1994"
+.UC 7
+.SH NAME
+dbopen \- database access methods
+.SH SYNOPSIS
+.nf
+.ft B
+#include <sys/types.h>
+#include <limits.h>
+#include <db.h>
+
+DB *
+dbopen(const char *file, int flags, int mode, DBTYPE type,
+.ti +5
+const void *openinfo);
+.ft R
+.fi
+.SH DESCRIPTION
+.IR Dbopen
+is the library interface to database files.
+The supported file formats are btree, hashed and UNIX file oriented.
+The btree format is a representation of a sorted, balanced tree structure.
+The hashed format is an extensible, dynamic hashing scheme.
+The flat-file format is a byte stream file with fixed or variable length
+records.
+The formats and file format specific information are described in detail
+in their respective manual pages
+.IR btree (3),
+.IR hash (3)
+and
+.IR recno (3).
+.PP
+Dbopen opens
+.I file
+for reading and/or writing.
+Files never intended to be preserved on disk may be created by setting
+the file parameter to NULL.
+.PP
+The
+.I flags
+and
+.I mode arguments
+are as specified to the
+.IR open (2)
+routine, however, only the O_CREAT, O_EXCL, O_EXLOCK, O_NONBLOCK,
+O_RDONLY, O_RDWR, O_SHLOCK and O_TRUNC flags are meaningful.
+(Note, opening a database file O_WRONLY is not possible.)
+.\"Three additional options may be specified by
+.\".IR or 'ing
+.\"them into the
+.\".I flags
+.\"argument.
+.\".TP
+.\"DB_LOCK
+.\"Do the necessary locking in the database to support concurrent access.
+.\"If concurrent access isn't needed or the database is read-only this
+.\"flag should not be set, as it tends to have an associated performance
+.\"penalty.
+.\".TP
+.\"DB_SHMEM
+.\"Place the underlying memory pool used by the database in shared
+.\"memory.
+.\"Necessary for concurrent access.
+.\".TP
+.\"DB_TXN
+.\"Support transactions in the database.
+.\"The DB_LOCK and DB_SHMEM flags must be set as well.
+.PP
+The
+.I type
+argument is of type DBTYPE (as defined in the <db.h> include file) and
+may be set to DB_BTREE, DB_HASH or DB_RECNO.
+.PP
+The
+.I openinfo
+argument is a pointer to an access method specific structure described
+in the access method's manual page.
+If
+.I openinfo
+is NULL, each access method will use defaults appropriate for the system
+and the access method.
+.PP
+.I Dbopen
+returns a pointer to a DB structure on success and NULL on error.
+The DB structure is defined in the <db.h> include file, and contains at
+least the following fields:
+.sp
+.nf
+typedef struct {
+.RS
+DBTYPE type;
+int (*close)(const DB *db);
+int (*del)(const DB *db, const DBT *key, u_int flags);
+int (*fd)(const DB *db);
+int (*get)(const DB *db, DBT *key, DBT *data, u_int flags);
+int (*put)(const DB *db, DBT *key, const DBT *data,
+.ti +5
+u_int flags);
+int (*sync)(const DB *db, u_int flags);
+int (*seq)(const DB *db, DBT *key, DBT *data, u_int flags);
+.RE
+} DB;
+.fi
+.PP
+These elements describe a database type and a set of functions performing
+various actions.
+These functions take a pointer to a structure as returned by
+.IR dbopen ,
+and sometimes one or more pointers to key/data structures and a flag value.
+.TP
+type
+The type of the underlying access method (and file format).
+.TP
+close
+A pointer to a routine to flush any cached information to disk, free any
+allocated resources, and close the underlying file(s).
+Since key/data pairs may be cached in memory, failing to sync the file
+with a
+.I close
+or
+.I sync
+function may result in inconsistent or lost information.
+.I Close
+routines return -1 on error (setting
+.IR errno )
+and 0 on success.
+.TP
+del
+A pointer to a routine to remove key/data pairs from the database.
+.IP
+The parameter
+.I flag
+may be set to the following value:
+.RS
+.TP
+R_CURSOR
+Delete the record referenced by the cursor.
+The cursor must have previously been initialized.
+.RE
+.IP
+.I Delete
+routines return -1 on error (setting
+.IR errno ),
+0 on success, and 1 if the specified
+.I key
+was not in the file.
+.TP
+fd
+A pointer to a routine which returns a file descriptor representative
+of the underlying database.
+A file descriptor referencing the same file will be returned to all
+processes which call
+.I dbopen
+with the same
+.I file
+name.
+This file descriptor may be safely used as an argument to the
+.IR fcntl (2)
+and
+.IR flock (2)
+locking functions.
+The file descriptor is not necessarily associated with any of the
+underlying files used by the access method.
+No file descriptor is available for in memory databases.
+.I Fd
+routines return -1 on error (setting
+.IR errno ),
+and the file descriptor on success.
+.TP
+get
+A pointer to a routine which is the interface for keyed retrieval from
+the database.
+The address and length of the data associated with the specified
+.I key
+are returned in the structure referenced by
+.IR data .
+.I Get
+routines return -1 on error (setting
+.IR errno ),
+0 on success, and 1 if the
+.I key
+was not in the file.
+.TP
+put
+A pointer to a routine to store key/data pairs in the database.
+.IP
+The parameter
+.I flag
+may be set to one of the following values:
+.RS
+.TP
+R_CURSOR
+Replace the key/data pair referenced by the cursor.
+The cursor must have previously been initialized.
+.TP
+R_IAFTER
+Append the data immediately after the data referenced by
+.IR key ,
+creating a new key/data pair.
+The record number of the appended key/data pair is returned in the
+.I key
+structure.
+(Applicable only to the DB_RECNO access method.)
+.TP
+R_IBEFORE
+Insert the data immediately before the data referenced by
+.IR key ,
+creating a new key/data pair.
+The record number of the inserted key/data pair is returned in the
+.I key
+structure.
+(Applicable only to the DB_RECNO access method.)
+.TP
+R_NOOVERWRITE
+Enter the new key/data pair only if the key does not previously exist.
+.TP
+R_SETCURSOR
+Store the key/data pair, setting or initializing the position of the
+cursor to reference it.
+(Applicable only to the DB_BTREE and DB_RECNO access methods.)
+.RE
+.IP
+R_SETCURSOR is available only for the DB_BTREE and DB_RECNO access
+methods because it implies that the keys have an inherent order
+which does not change.
+.IP
+R_IAFTER and R_IBEFORE are available only for the DB_RECNO
+access method because they each imply that the access method is able to
+create new keys.
+This is only true if the keys are ordered and independent, record numbers
+for example.
+.IP
+The default behavior of the
+.I put
+routines is to enter the new key/data pair, replacing any previously
+existing key.
+.IP
+.I Put
+routines return -1 on error (setting
+.IR errno ),
+0 on success, and 1 if the R_NOOVERWRITE
+.I flag
+was set and the key already exists in the file.
+.TP
+seq
+A pointer to a routine which is the interface for sequential
+retrieval from the database.
+The address and length of the key are returned in the structure
+referenced by
+.IR key ,
+and the address and length of the data are returned in the
+structure referenced
+by
+.IR data .
+.IP
+Sequential key/data pair retrieval may begin at any time, and the
+position of the ``cursor'' is not affected by calls to the
+.IR del ,
+.IR get ,
+.IR put ,
+or
+.I sync
+routines.
+Modifications to the database during a sequential scan will be reflected
+in the scan, i.e. records inserted behind the cursor will not be returned
+while records inserted in front of the cursor will be returned.
+.IP
+The flag value
+.B must
+be set to one of the following values:
+.RS
+.TP
+R_CURSOR
+The data associated with the specified key is returned.
+This differs from the
+.I get
+routines in that it sets or initializes the cursor to the location of
+the key as well.
+(Note, for the DB_BTREE access method, the returned key is not necessarily an
+exact match for the specified key.
+The returned key is the smallest key greater than or equal to the specified
+key, permitting partial key matches and range searches.)
+.TP
+R_FIRST
+The first key/data pair of the database is returned, and the cursor
+is set or initialized to reference it.
+.TP
+R_LAST
+The last key/data pair of the database is returned, and the cursor
+is set or initialized to reference it.
+(Applicable only to the DB_BTREE and DB_RECNO access methods.)
+.TP
+R_NEXT
+Retrieve the key/data pair immediately after the cursor.
+If the cursor is not yet set, this is the same as the R_FIRST flag.
+.TP
+R_PREV
+Retrieve the key/data pair immediately before the cursor.
+If the cursor is not yet set, this is the same as the R_LAST flag.
+(Applicable only to the DB_BTREE and DB_RECNO access methods.)
+.RE
+.IP
+R_LAST and R_PREV are available only for the DB_BTREE and DB_RECNO
+access methods because they each imply that the keys have an inherent
+order which does not change.
+.IP
+.I Seq
+routines return -1 on error (setting
+.IR errno ),
+0 on success and 1 if there are no key/data pairs less than or greater
+than the specified or current key.
+If the DB_RECNO access method is being used, and if the database file
+is a character special file and no complete key/data pairs are currently
+available, the
+.I seq
+routines return 2.
+.TP
+sync
+A pointer to a routine to flush any cached information to disk.
+If the database is in memory only, the
+.I sync
+routine has no effect and will always succeed.
+.IP
+The flag value may be set to the following value:
+.RS
+.TP
+R_RECNOSYNC
+If the DB_RECNO access method is being used, this flag causes
+the sync routine to apply to the btree file which underlies the
+recno file, not the recno file itself.
+(See the
+.I bfname
+field of the
+.IR recno (3)
+manual page for more information.)
+.RE
+.IP
+.I Sync
+routines return -1 on error (setting
+.IR errno )
+and 0 on success.
+.SH "KEY/DATA PAIRS"
+Access to all file types is based on key/data pairs.
+Both keys and data are represented by the following data structure:
+.PP
+typedef struct {
+.RS
+void *data;
+.br
+size_t size;
+.RE
+} DBT;
+.PP
+The elements of the DBT structure are defined as follows:
+.TP
+data
+A pointer to a byte string.
+.TP
+size
+The length of the byte string.
+.PP
+Key and data byte strings may reference strings of essentially unlimited
+length although any two of them must fit into available memory at the same
+time.
+It should be noted that the access methods provide no guarantees about
+byte string alignment.
+.SH ERRORS
+The
+.I dbopen
+routine may fail and set
+.I errno
+for any of the errors specified for the library routines
+.IR open (2)
+and
+.IR malloc (3)
+or the following:
+.TP
+[EFTYPE]
+A file is incorrectly formatted.
+.TP
+[EINVAL]
+A parameter has been specified (hash function, pad byte etc.) that is
+incompatible with the current file specification or which is not
+meaningful for the function (for example, use of the cursor without
+prior initialization) or there is a mismatch between the version
+number of file and the software.
+.PP
+The
+.I close
+routines may fail and set
+.I errno
+for any of the errors specified for the library routines
+.IR close (2),
+.IR read (2),
+.IR write (2),
+.IR free (3),
+or
+.IR fsync (2).
+.PP
+The
+.IR del ,
+.IR get ,
+.I put
+and
+.I seq
+routines may fail and set
+.I errno
+for any of the errors specified for the library routines
+.IR read (2),
+.IR write (2),
+.IR free (3)
+or
+.IR malloc (3).
+.PP
+The
+.I fd
+routines will fail and set
+.I errno
+to ENOENT for in memory databases.
+.PP
+The
+.I sync
+routines may fail and set
+.I errno
+for any of the errors specified for the library routine
+.IR fsync (2).
+.SH "SEE ALSO"
+.IR btree (3),
+.IR hash (3),
+.IR mpool (3),
+.IR recno (3)
+.sp
+.IR "LIBTP: Portable, Modular Transactions for UNIX" ,
+Margo Seltzer, Michael Olson, USENIX proceedings, Winter 1992.
+.SH BUGS
+The typedef DBT is a mnemonic for ``data base thang'', and was used
+because noone could think of a reasonable name that wasn't already used.
+.PP
+The file descriptor interface is a kluge and will be deleted in a
+future version of the interface.
+.PP
+None of the access methods provide any form of concurrent access,
+locking, or transactions.
diff --git a/lib/libc/db/man/hash.3 b/lib/libc/db/man/hash.3
new file mode 100644
index 0000000..3ae00a2
--- /dev/null
+++ b/lib/libc/db/man/hash.3
@@ -0,0 +1,152 @@
+.\" Copyright (c) 1990, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)hash.3	8.5 (Berkeley) 2/21/94
+.\"
+.TH HASH 3 "February 21, 1994"
+.UC 7
+.SH NAME
+hash \- hash database access method
+.SH SYNOPSIS
+.nf
+.ft B
+#include <sys/types.h>
+#include <db.h>
+.ft R
+.fi
+.SH DESCRIPTION
+The routine
+.IR dbopen
+is the library interface to database files.
+One of the supported file formats is hash files.
+The general description of the database access methods is in
+.IR dbopen (3),
+this manual page describes only the hash specific information.
+.PP
+The hash data structure is an extensible, dynamic hashing scheme.
+.PP
+The access method specific data structure provided to
+.I dbopen
+is defined in the <db.h> include file as follows:
+.sp
+typedef struct {
+.RS
+u_int bsize;
+.br
+u_int ffactor;
+.br
+u_int nelem;
+.br
+u_int cachesize;
+.br
+u_int32_t (*hash)(const void *, size_t);
+.br
+int lorder;
+.RE
+} HASHINFO;
+.PP
+The elements of this structure are as follows:
+.TP
+bsize
+.I Bsize
+defines the hash table bucket size, and is, by default, 256 bytes.
+It may be preferable to increase the page size for disk-resident tables
+and tables with large data items.
+.TP
+ffactor
+.I Ffactor
+indicates a desired density within the hash table.
+It is an approximation of the number of keys allowed to accumulate in any
+one bucket, determining when the hash table grows or shrinks.
+The default value is 8.
+.TP
+nelem
+.I Nelem
+is an estimate of the final size of the hash table.
+If not set or set too low, hash tables will expand gracefully as keys
+are entered, although a slight performance degradation may be noticed.
+The default value is 1.
+.TP
+cachesize
+A suggested maximum size, in bytes, of the memory cache.
+This value is
+.B only
+advisory, and the access method will allocate more memory rather
+than fail.
+.TP
+hash
+.I Hash
+is a user defined hash function.
+Since no hash function performs equally well on all possible data, the
+user may find that the built-in hash function does poorly on a particular
+data set.
+User specified hash functions must take two arguments (a pointer to a byte
+string and a length) and return a 32-bit quantity to be used as the hash
+value.
+.TP
+lorder
+The byte order for integers in the stored database metadata.
+The number should represent the order as an integer; for example, 
+big endian order would be the number 4,321.
+If
+.I lorder
+is 0 (no order is specified) the current host order is used.
+If the  file already exists, the specified value is ignored and the
+value specified when the tree was created is used.
+.PP
+If the file already exists (and the O_TRUNC flag is not specified), the
+values specified for the parameters bsize, ffactor, lorder and nelem are
+ignored and the values specified when the tree was created are used.
+.PP
+If a hash function is specified,
+.I hash_open
+will attempt to determine if the hash function specified is the same as
+the one with which the database was created, and will fail if it is not.
+.PP
+Backward compatible interfaces to the routines described in
+.IR dbm (3),
+and
+.IR ndbm (3)
+are provided, however these interfaces are not compatible with
+previous file formats.
+.SH "SEE ALSO"
+.IR btree (3),
+.IR dbopen (3),
+.IR mpool (3),
+.IR recno (3)
+.sp
+.IR "Dynamic Hash Tables" ,
+Per-Ake Larson, Communications of the ACM, April 1988.
+.sp
+.IR "A New Hash Package for UNIX" ,
+Margo Seltzer, USENIX Proceedings, Winter 1991.
+.SH BUGS
+Only big and little endian byte order is supported.
diff --git a/lib/libc/db/man/mpool.3 b/lib/libc/db/man/mpool.3
new file mode 100644
index 0000000..c17606e
--- /dev/null
+++ b/lib/libc/db/man/mpool.3
@@ -0,0 +1,219 @@
+.\" Copyright (c) 1990, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)mpool.3	8.1 (Berkeley) 6/4/93
+.\"
+.TH MPOOL 3 "June 4, 1993"
+.UC 7
+.SH NAME
+mpool \- shared memory buffer pool
+.SH SYNOPSIS
+.nf
+.ft B
+#include <db.h>
+#include <mpool.h>
+
+MPOOL *
+mpool_open (DBT *key, int fd, pgno_t pagesize, pgno_t maxcache);
+
+void
+mpool_filter (MPOOL *mp, void (*pgin)(void *, pgno_t, void *),
+.ti +5
+void (*pgout)(void *, pgno_t, void *), void *pgcookie);
+
+void *
+mpool_new (MPOOL *mp, pgno_t *pgnoaddr);
+
+void *
+mpool_get (MPOOL *mp, pgno_t pgno, u_int flags);
+
+int
+mpool_put (MPOOL *mp, void *pgaddr, u_int flags);
+
+int
+mpool_sync (MPOOL *mp);
+
+int
+mpool_close (MPOOL *mp);
+.ft R
+.fi
+.SH DESCRIPTION
+.IR Mpool
+is the library interface intended to provide page oriented buffer management
+of files.
+The buffers may be shared between processes.
+.PP
+The function
+.I mpool_open
+initializes a memory pool.
+The
+.I key
+argument is the byte string used to negotiate between multiple
+processes wishing to share buffers.
+If the file buffers are mapped in shared memory, all processes using
+the same key will share the buffers.
+If
+.I key
+is NULL, the buffers are mapped into private memory.
+The
+.I fd
+argument is a file descriptor for the underlying file, which must be seekable.
+If
+.I key
+is non-NULL and matches a file already being mapped, the
+.I fd
+argument is ignored.
+.PP
+The
+.I pagesize
+argument is the size, in bytes, of the pages into which the file is broken up.
+The
+.I maxcache
+argument is the maximum number of pages from the underlying file to cache
+at any one time.
+This value is not relative to the number of processes which share a file's
+buffers, but will be the largest value specified by any of the processes
+sharing the file.
+.PP
+The
+.I mpool_filter
+function is intended to make transparent input and output processing of the
+pages possible.
+If the
+.I pgin
+function is specified, it is called each time a buffer is read into the memory
+pool from the backing file.
+If the
+.I pgout
+function is specified, it is called each time a buffer is written into the
+backing file.
+Both functions are are called with the
+.I pgcookie
+pointer, the page number and a pointer to the page to being read or written.
+.PP
+The function
+.I mpool_new
+takes an MPOOL pointer and an address as arguments.
+If a new page can be allocated, a pointer to the page is returned and
+the page number is stored into the
+.I pgnoaddr
+address.
+Otherwise, NULL is returned and errno is set.
+.PP
+The function
+.I mpool_get
+takes a MPOOL pointer and a page number as arguments.
+If the page exists, a pointer to the page is returned.
+Otherwise, NULL is returned and errno is set.
+The flags parameter is not currently used.
+.PP
+The function
+.I mpool_put
+unpins the page referenced by
+.IR pgaddr .
+.I Pgaddr
+must be an address previously returned by
+.I mpool_get
+or
+.IR mpool_new .
+The flag value is specified by
+.IR or 'ing
+any of the following values:
+.TP
+MPOOL_DIRTY
+The page has been modified and needs to be written to the backing file.
+.PP
+.I Mpool_put
+returns 0 on success and -1 if an error occurs.
+.PP
+The function
+.I mpool_sync
+writes all modified pages associated with the MPOOL pointer to the
+backing file.
+.I Mpool_sync
+returns 0 on success and -1 if an error occurs.
+.PP
+The
+.I mpool_close
+function free's up any allocated memory associated with the memory pool
+cookie.
+Modified pages are
+.B not
+written to the backing file.
+.I Mpool_close
+returns 0 on success and -1 if an error occurs.
+.SH ERRORS
+The
+.I mpool_open
+function may fail and set
+.I errno
+for any of the errors specified for the library routine
+.IR malloc (3).
+.PP
+The
+.I mpool_get
+function may fail and set
+.I errno
+for the following:
+.TP 15
+[EINVAL]
+The requested record doesn't exist.
+.PP
+The
+.I mpool_new
+and
+.I mpool_get
+functions may fail and set
+.I errno
+for any of the errors specified for the library routines
+.IR read (2) ,
+.IR write (2) ,
+and
+.IR malloc (3).
+.PP
+The
+.I mpool_sync
+function may fail and set
+.I errno
+for any of the errors specified for the library routine
+.IR write (2).
+.PP
+The
+.I mpool_close
+function may fail and set
+.I errno
+for any of the errors specified for the library routine
+.IR free (3).
+.SH "SEE ALSO"
+.IR dbopen (3),
+.IR btree (3),
+.IR hash (3),
+.IR recno (3)
diff --git a/lib/libc/db/man/recno.3 b/lib/libc/db/man/recno.3
new file mode 100644
index 0000000..a40e6c9
--- /dev/null
+++ b/lib/libc/db/man/recno.3
@@ -0,0 +1,196 @@
+.\" Copyright (c) 1990, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)recno.3	8.3 (Berkeley) 2/21/94
+.\"
+.TH RECNO 3 "February 21, 1994"
+.UC 7
+.SH NAME
+recno \- record number database access method
+.SH SYNOPSIS
+.nf
+.ft B
+#include <sys/types.h>
+#include <db.h>
+.ft R
+.fi
+.SH DESCRIPTION
+The routine
+.IR dbopen
+is the library interface to database files.
+One of the supported file formats is record number files.
+The general description of the database access methods is in
+.IR dbopen (3),
+this manual page describes only the recno specific information.
+.PP
+The record number data structure is either variable or fixed-length
+records stored in a flat-file format, accessed by the logical record
+number.
+The existence of record number five implies the existence of records
+one through four, and the deletion of record number one causes
+record number five to be renumbered to record number four, as well
+as the cursor, if positioned after record number one, to shift down
+one record.
+.PP
+The recno access method specific data structure provided to
+.I dbopen
+is defined in the <db.h> include file as follows:
+.PP
+typedef struct {
+.RS
+u_long flags;
+.br
+u_int cachesize;
+.br
+u_int psize;
+.br
+int lorder;
+.br
+size_t reclen;
+.br
+u_char bval;
+.br
+char *bfname;
+.RE
+} RECNOINFO;
+.PP
+The elements of this structure are defined as follows:
+.TP
+flags
+The flag value is specified by
+.IR or 'ing
+any of the following values:
+.RS
+.TP
+R_FIXEDLEN
+The records are fixed-length, not byte delimited.
+The structure element
+.I reclen
+specifies the length of the record, and the structure element
+.I bval
+is used as the pad character.
+.TP
+R_NOKEY
+In the interface specified by
+.IR dbopen ,
+the sequential record retrieval fills in both the caller's key and
+data structures.
+If the R_NOKEY flag is specified, the
+.I cursor
+routines are not required to fill in the key structure.
+This permits applications to retrieve records at the end of files without
+reading all of the intervening records.
+.TP
+R_SNAPSHOT
+This flag requires that a snapshot of the file be taken when
+.I dbopen
+is called, instead of permitting any unmodified records to be read from
+the original file.
+.RE
+.TP
+cachesize
+A suggested maximum size, in bytes, of the memory cache.
+This value is
+.B only
+advisory, and the access method will allocate more memory rather than fail.
+If
+.I cachesize
+is  0 (no size is specified) a default cache is used.
+.TP
+psize
+The recno access method stores the in-memory copies of its records
+in a btree.
+This value is the size (in bytes) of the pages used for nodes in that tree.
+If
+.I psize
+is 0 (no page size is specified) a page size is chosen based on the
+underlying file system I/O block size.
+See
+.IR btree (3)
+for more information.
+.TP
+lorder
+The byte order for integers in the stored database metadata.
+The number should represent the order as an integer; for example,
+big endian order would be the number 4,321.
+If
+.I lorder
+is 0 (no order is specified) the current host order is used.
+.TP
+reclen
+The length of a fixed-length record.
+.TP
+bval
+The delimiting byte to be used to mark the end of a record for
+variable-length records, and the pad character for fixed-length
+records.
+If no value is specified, newlines (``\en'') are used to mark the end
+of variable-length records and fixed-length records are padded with
+spaces.
+.TP
+bfname
+The recno access method stores the in-memory copies of its records
+in a btree.
+If bfname is non-NULL, it specifies the name of the btree file,
+as if specified as the file name for a dbopen of a btree file.
+.PP
+The data part of the key/data pair used by the recno access method
+is the same as other access methods.
+The key is different.
+The
+.I data
+field of the key should be a pointer to a memory location of type
+.IR recno_t ,
+as defined in the <db.h> include file.
+This type is normally the largest unsigned integral type available to
+the implementation.
+The
+.I size
+field of the key should be the size of that type.
+.PP
+In the interface specified by
+.IR dbopen ,
+using the
+.I put
+interface to create a new record will cause the creation of multiple,
+empty records if the record number is more than one greater than the
+largest record currently in the database.
+.SH "SEE ALSO"
+.IR dbopen (3),
+.IR hash (3),
+.IR mpool (3),
+.IR recno (3)
+.sp
+.IR "Document Processing in a Relational Database System" ,
+Michael Stonebraker, Heidi Stettner, Joseph Kalash, Antonin Guttman,
+Nadene Lynn, Memorandum No. UCB/ERL M82/32, May 1982.
+.SH BUGS
+Only big and little endian byte order is supported.
diff --git a/lib/libc/db/mpool/Makefile.inc b/lib/libc/db/mpool/Makefile.inc
new file mode 100644
index 0000000..93210c8
--- /dev/null
+++ b/lib/libc/db/mpool/Makefile.inc
@@ -0,0 +1,5 @@
+#	@(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+
+.PATH: ${.CURDIR}/db/mpool
+
+SRCS+=	mpool.c
diff --git a/lib/libc/db/mpool/README b/lib/libc/db/mpool/README
new file mode 100644
index 0000000..0f01fbc
--- /dev/null
+++ b/lib/libc/db/mpool/README
@@ -0,0 +1,7 @@
+#	@(#)README	8.1 (Berkeley) 6/4/93
+
+These are the current memory pool routines.
+They aren't ready for prime time, yet, and
+the interface is expected to change.
+
+--keith
diff --git a/lib/libc/db/mpool/mpool.c b/lib/libc/db/mpool/mpool.c
new file mode 100644
index 0000000..562c7f5
--- /dev/null
+++ b/lib/libc/db/mpool/mpool.c
@@ -0,0 +1,534 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)mpool.c	8.2 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <db.h>
+#define	__MPOOLINTERFACE_PRIVATE
+#include "mpool.h"
+
+static BKT *mpool_bkt __P((MPOOL *));
+static BKT *mpool_look __P((MPOOL *, pgno_t));
+static int  mpool_write __P((MPOOL *, BKT *));
+#ifdef DEBUG
+static void __mpoolerr __P((const char *fmt, ...));
+#endif
+
+/*
+ * MPOOL_OPEN -- initialize a memory pool.
+ *
+ * Parameters:
+ *	key:		Shared buffer key.
+ *	fd:		File descriptor.
+ *	pagesize:	File page size.
+ *	maxcache:	Max number of cached pages.
+ *
+ * Returns:
+ *	MPOOL pointer, NULL on error.
+ */
+MPOOL *
+mpool_open(key, fd, pagesize, maxcache)
+	DBT *key;
+	int fd;
+	pgno_t pagesize, maxcache;
+{
+	struct stat sb;
+	MPOOL *mp;
+	int entry;
+
+	if (fstat(fd, &sb))
+		return (NULL);
+	/* XXX
+	 * We should only set st_size to 0 for pipes -- 4.4BSD has the fix so
+	 * that stat(2) returns true for ISSOCK on pipes.  Until then, this is
+	 * fairly close.
+	 */
+	if (!S_ISREG(sb.st_mode)) {
+		errno = ESPIPE;
+		return (NULL);
+	}
+
+	if ((mp = (MPOOL *)malloc(sizeof(MPOOL))) == NULL)
+		return (NULL);
+	mp->free.cnext = mp->free.cprev = (BKT *)&mp->free;
+	mp->lru.cnext = mp->lru.cprev = (BKT *)&mp->lru;
+	for (entry = 0; entry < HASHSIZE; ++entry)
+		mp->hashtable[entry].hnext = mp->hashtable[entry].hprev =
+		    mp->hashtable[entry].cnext = mp->hashtable[entry].cprev =
+		    (BKT *)&mp->hashtable[entry];
+	mp->curcache = 0;
+	mp->maxcache = maxcache;
+	mp->pagesize = pagesize;
+	mp->npages = sb.st_size / pagesize;
+	mp->fd = fd;
+	mp->pgcookie = NULL;
+	mp->pgin = mp->pgout = NULL;
+
+#ifdef STATISTICS
+	mp->cachehit = mp->cachemiss = mp->pagealloc = mp->pageflush =
+	    mp->pageget = mp->pagenew = mp->pageput = mp->pageread =
+	    mp->pagewrite = 0;
+#endif
+	return (mp);
+}
+
+/*
+ * MPOOL_FILTER -- initialize input/output filters.
+ *
+ * Parameters:
+ *	pgin:		Page in conversion routine.
+ *	pgout:		Page out conversion routine.
+ *	pgcookie:	Cookie for page in/out routines.
+ */
+void
+mpool_filter(mp, pgin, pgout, pgcookie)
+	MPOOL *mp;
+	void (*pgin) __P((void *, pgno_t, void *));
+	void (*pgout) __P((void *, pgno_t, void *));
+	void *pgcookie;
+{
+	mp->pgin = pgin;
+	mp->pgout = pgout;
+	mp->pgcookie = pgcookie;
+}
+
+/*
+ * MPOOL_NEW -- get a new page
+ *
+ * Parameters:
+ *	mp:		mpool cookie
+ *	pgnoadddr:	place to store new page number
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+void *
+mpool_new(mp, pgnoaddr)
+	MPOOL *mp;
+	pgno_t *pgnoaddr;
+{
+	BKT *b;
+	BKTHDR *hp;
+
+#ifdef STATISTICS
+	++mp->pagenew;
+#endif
+	/*
+	 * Get a BKT from the cache.  Assign a new page number, attach it to
+	 * the hash and lru chains and return.
+	 */
+	if ((b = mpool_bkt(mp)) == NULL)
+		return (NULL);
+	*pgnoaddr = b->pgno = mp->npages++;
+	b->flags = MPOOL_PINNED;
+	inshash(b, b->pgno);
+	inschain(b, &mp->lru);
+	return (b->page);
+}
+
+/*
+ * MPOOL_GET -- get a page from the pool
+ *
+ * Parameters:
+ *	mp:	mpool cookie
+ *	pgno:	page number
+ *	flags:	not used
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+void *
+mpool_get(mp, pgno, flags)
+	MPOOL *mp;
+	pgno_t pgno;
+	u_int flags;		/* XXX not used? */
+{
+	BKT *b;
+	BKTHDR *hp;
+	off_t off;
+	int nr;
+
+	/*
+	 * If asking for a specific page that is already in the cache, find
+	 * it and return it.
+	 */
+	if (b = mpool_look(mp, pgno)) {
+#ifdef STATISTICS
+		++mp->pageget;
+#endif
+#ifdef DEBUG
+		if (b->flags & MPOOL_PINNED)
+			__mpoolerr("mpool_get: page %d already pinned",
+			    b->pgno);
+#endif
+		rmchain(b);
+		inschain(b, &mp->lru);
+		b->flags |= MPOOL_PINNED;
+		return (b->page);
+	}
+
+	/* Not allowed to retrieve a non-existent page. */
+	if (pgno >= mp->npages) {
+		errno = EINVAL;
+		return (NULL);
+	}
+
+	/* Get a page from the cache. */
+	if ((b = mpool_bkt(mp)) == NULL)
+		return (NULL);
+	b->pgno = pgno;
+	b->flags = MPOOL_PINNED;
+
+#ifdef STATISTICS
+	++mp->pageread;
+#endif
+	/* Read in the contents. */
+	off = mp->pagesize * pgno;
+	if (lseek(mp->fd, off, SEEK_SET) != off)
+		return (NULL);
+	if ((nr = read(mp->fd, b->page, mp->pagesize)) != mp->pagesize) {
+		if (nr >= 0)
+			errno = EFTYPE;
+		return (NULL);
+	}
+	if (mp->pgin)
+		(mp->pgin)(mp->pgcookie, b->pgno, b->page);
+
+	inshash(b, b->pgno);
+	inschain(b, &mp->lru);
+#ifdef STATISTICS
+	++mp->pageget;
+#endif
+	return (b->page);
+}
+
+/*
+ * MPOOL_PUT -- return a page to the pool
+ *
+ * Parameters:
+ *	mp:	mpool cookie
+ *	page:	page pointer
+ *	pgno:	page number
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+int
+mpool_put(mp, page, flags)
+	MPOOL *mp;
+	void *page;
+	u_int flags;
+{
+	BKT *baddr;
+#ifdef DEBUG
+	BKT *b;
+#endif
+
+#ifdef STATISTICS
+	++mp->pageput;
+#endif
+	baddr = (BKT *)((char *)page - sizeof(BKT));
+#ifdef DEBUG
+	if (!(baddr->flags & MPOOL_PINNED))
+		__mpoolerr("mpool_put: page %d not pinned", b->pgno);
+	for (b = mp->lru.cnext; b != (BKT *)&mp->lru; b = b->cnext) {
+		if (b == (BKT *)&mp->lru)
+			__mpoolerr("mpool_put: %0x: bad address", baddr);
+		if (b == baddr)
+			break;
+	}
+#endif
+	baddr->flags &= ~MPOOL_PINNED;
+	baddr->flags |= flags & MPOOL_DIRTY;
+	return (RET_SUCCESS);
+}
+
+/*
+ * MPOOL_CLOSE -- close the buffer pool
+ *
+ * Parameters:
+ *	mp:	mpool cookie
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+int
+mpool_close(mp)
+	MPOOL *mp;
+{
+	BKT *b, *next;
+
+	/* Free up any space allocated to the lru pages. */
+	for (b = mp->lru.cprev; b != (BKT *)&mp->lru; b = next) {
+		next = b->cprev;
+		free(b);
+	}
+	free(mp);
+	return (RET_SUCCESS);
+}
+
+/*
+ * MPOOL_SYNC -- sync the file to disk.
+ *
+ * Parameters:
+ *	mp:	mpool cookie
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+int
+mpool_sync(mp)
+	MPOOL *mp;
+{
+	BKT *b;
+
+	for (b = mp->lru.cprev; b != (BKT *)&mp->lru; b = b->cprev)
+		if (b->flags & MPOOL_DIRTY && mpool_write(mp, b) == RET_ERROR)
+			return (RET_ERROR);
+	return (fsync(mp->fd) ? RET_ERROR : RET_SUCCESS);
+}
+
+/*
+ * MPOOL_BKT -- get/create a BKT from the cache
+ *
+ * Parameters:
+ *	mp:	mpool cookie
+ *
+ * Returns:
+ *	NULL on failure and a pointer to the BKT on success
+ */
+static BKT *
+mpool_bkt(mp)
+	MPOOL *mp;
+{
+	BKT *b;
+
+	if (mp->curcache < mp->maxcache)
+		goto new;
+
+	/*
+	 * If the cache is maxxed out, search the lru list for a buffer we
+	 * can flush.  If we find one, write it if necessary and take it off
+	 * any lists.  If we don't find anything we grow the cache anyway.
+	 * The cache never shrinks.
+	 */
+	for (b = mp->lru.cprev; b != (BKT *)&mp->lru; b = b->cprev)
+		if (!(b->flags & MPOOL_PINNED)) {
+			if (b->flags & MPOOL_DIRTY &&
+			    mpool_write(mp, b) == RET_ERROR)
+				return (NULL);
+			rmhash(b);
+			rmchain(b);
+#ifdef STATISTICS
+			++mp->pageflush;
+#endif
+#ifdef DEBUG
+			{
+				void *spage;
+				spage = b->page;
+				memset(b, 0xff, sizeof(BKT) + mp->pagesize);
+				b->page = spage;
+			}
+#endif
+			return (b);
+		}
+
+new:	if ((b = (BKT *)malloc(sizeof(BKT) + mp->pagesize)) == NULL)
+		return (NULL);
+#ifdef STATISTICS
+	++mp->pagealloc;
+#endif
+#ifdef DEBUG
+	memset(b, 0xff, sizeof(BKT) + mp->pagesize);
+#endif
+	b->page = (char *)b + sizeof(BKT);
+	++mp->curcache;
+	return (b);
+}
+
+/*
+ * MPOOL_WRITE -- sync a page to disk
+ *
+ * Parameters:
+ *	mp:	mpool cookie
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+static int
+mpool_write(mp, b)
+	MPOOL *mp;
+	BKT *b;
+{
+	off_t off;
+
+	if (mp->pgout)
+		(mp->pgout)(mp->pgcookie, b->pgno, b->page);
+
+#ifdef STATISTICS
+	++mp->pagewrite;
+#endif
+	off = mp->pagesize * b->pgno;
+	if (lseek(mp->fd, off, SEEK_SET) != off)
+		return (RET_ERROR);
+	if (write(mp->fd, b->page, mp->pagesize) != mp->pagesize)
+		return (RET_ERROR);
+	b->flags &= ~MPOOL_DIRTY;
+	return (RET_SUCCESS);
+}
+
+/*
+ * MPOOL_LOOK -- lookup a page
+ *
+ * Parameters:
+ *	mp:	mpool cookie
+ *	pgno:	page number
+ *
+ * Returns:
+ *	NULL on failure and a pointer to the BKT on success
+ */
+static BKT *
+mpool_look(mp, pgno)
+	MPOOL *mp;
+	pgno_t pgno;
+{
+	register BKT *b;
+	register BKTHDR *tb;
+
+	/* XXX
+	 * If find the buffer, put it first on the hash chain so can
+	 * find it again quickly.
+	 */
+	tb = &mp->hashtable[HASHKEY(pgno)];
+	for (b = tb->hnext; b != (BKT *)tb; b = b->hnext)
+		if (b->pgno == pgno) {
+#ifdef STATISTICS
+			++mp->cachehit;
+#endif
+			return (b);
+		}
+#ifdef STATISTICS
+	++mp->cachemiss;
+#endif
+	return (NULL);
+}
+
+#ifdef STATISTICS
+/*
+ * MPOOL_STAT -- cache statistics
+ *
+ * Parameters:
+ *	mp:	mpool cookie
+ */
+void
+mpool_stat(mp)
+	MPOOL *mp;
+{
+	BKT *b;
+	int cnt;
+	char *sep;
+
+	(void)fprintf(stderr, "%lu pages in the file\n", mp->npages);
+	(void)fprintf(stderr,
+	    "page size %lu, cacheing %lu pages of %lu page max cache\n",
+	    mp->pagesize, mp->curcache, mp->maxcache);
+	(void)fprintf(stderr, "%lu page puts, %lu page gets, %lu page new\n",
+	    mp->pageput, mp->pageget, mp->pagenew);
+	(void)fprintf(stderr, "%lu page allocs, %lu page flushes\n",
+	    mp->pagealloc, mp->pageflush);
+	if (mp->cachehit + mp->cachemiss)
+		(void)fprintf(stderr,
+		    "%.0f%% cache hit rate (%lu hits, %lu misses)\n",
+		    ((double)mp->cachehit / (mp->cachehit + mp->cachemiss))
+		    * 100, mp->cachehit, mp->cachemiss);
+	(void)fprintf(stderr, "%lu page reads, %lu page writes\n",
+	    mp->pageread, mp->pagewrite);
+
+	sep = "";
+	cnt = 0;
+	for (b = mp->lru.cnext; b != (BKT *)&mp->lru; b = b->cnext) {
+		(void)fprintf(stderr, "%s%d", sep, b->pgno);
+		if (b->flags & MPOOL_DIRTY)
+			(void)fprintf(stderr, "d");
+		if (b->flags & MPOOL_PINNED)
+			(void)fprintf(stderr, "P");
+		if (++cnt == 10) {
+			sep = "\n";
+			cnt = 0;
+		} else
+			sep = ", ";
+
+	}
+	(void)fprintf(stderr, "\n");
+}
+#endif
+
+#ifdef DEBUG
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+static void
+#if __STDC__
+__mpoolerr(const char *fmt, ...)
+#else
+__mpoolerr(fmt, va_alist)
+	char *fmt;
+	va_dcl
+#endif
+{
+	va_list ap;
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	(void)vfprintf(stderr, fmt, ap);
+	va_end(ap);
+	(void)fprintf(stderr, "\n");
+	abort();
+	/* NOTREACHED */
+}
+#endif
diff --git a/lib/libc/db/recno/Makefile.inc b/lib/libc/db/recno/Makefile.inc
new file mode 100644
index 0000000..e49e225
--- /dev/null
+++ b/lib/libc/db/recno/Makefile.inc
@@ -0,0 +1,6 @@
+#       @(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+
+.PATH: ${.CURDIR}/db/recno
+
+SRCS+=	rec_close.c rec_delete.c rec_get.c rec_open.c rec_put.c rec_search.c \
+	rec_seq.c rec_utils.c
diff --git a/lib/libc/db/recno/extern.h b/lib/libc/db/recno/extern.h
new file mode 100644
index 0000000..2188131
--- /dev/null
+++ b/lib/libc/db/recno/extern.h
@@ -0,0 +1,54 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)extern.h	8.2 (Berkeley) 2/21/94
+ */
+
+#include "../btree/extern.h"
+
+int	 __rec_close __P((DB *));
+int	 __rec_delete __P((const DB *, const DBT *, u_int));
+int	 __rec_dleaf __P((BTREE *, PAGE *, indx_t));
+int	 __rec_fd __P((const DB *));
+int	 __rec_fmap __P((BTREE *, recno_t));
+int	 __rec_fout __P((BTREE *));
+int	 __rec_fpipe __P((BTREE *, recno_t));
+int	 __rec_get __P((const DB *, const DBT *, DBT *, u_int));
+int	 __rec_iput __P((BTREE *, recno_t, const DBT *, u_int));
+int	 __rec_put __P((const DB *dbp, DBT *, const DBT *, u_int));
+int	 __rec_ret __P((BTREE *, EPG *, recno_t, DBT *, DBT *));
+EPG	*__rec_search __P((BTREE *, recno_t, enum SRCHOP));
+int	 __rec_seq __P((const DB *, DBT *, DBT *, u_int));
+int	 __rec_sync __P((const DB *, u_int));
+int	 __rec_vmap __P((BTREE *, recno_t));
+int	 __rec_vout __P((BTREE *));
+int	 __rec_vpipe __P((BTREE *, recno_t));
diff --git a/lib/libc/db/recno/rec_close.c b/lib/libc/db/recno/rec_close.c
new file mode 100644
index 0000000..a96d4f1
--- /dev/null
+++ b/lib/libc/db/recno/rec_close.c
@@ -0,0 +1,163 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rec_close.c	8.3 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <sys/mman.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __REC_CLOSE -- Close a recno tree.
+ *
+ * Parameters:
+ *	dbp:	pointer to access method
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_close(dbp)
+	DB *dbp;
+{
+	BTREE *t;
+	int status;
+
+	t = dbp->internal;
+
+	/* Toss any page pinned across calls. */
+	if (t->bt_pinned != NULL) {
+		mpool_put(t->bt_mp, t->bt_pinned, 0);
+		t->bt_pinned = NULL;
+	}
+
+	if (__rec_sync(dbp, 0) == RET_ERROR)
+		return (RET_ERROR);
+
+	/* Committed to closing. */
+	status = RET_SUCCESS;
+	if (ISSET(t, R_MEMMAPPED) && munmap(t->bt_smap, t->bt_msize))
+		status = RET_ERROR;
+
+	if (!ISSET(t, R_INMEM))
+		if (ISSET(t, R_CLOSEFP)) {
+			if (fclose(t->bt_rfp))
+				status = RET_ERROR;
+		} else
+			if (close(t->bt_rfd))
+				status = RET_ERROR;
+
+	if (__bt_close(dbp) == RET_ERROR)
+		status = RET_ERROR;
+
+	return (status);
+}
+
+/*
+ * __REC_SYNC -- sync the recno tree to disk.
+ *
+ * Parameters:
+ *	dbp:	pointer to access method
+ *
+ * Returns:
+ *	RET_SUCCESS, RET_ERROR.
+ */
+int
+__rec_sync(dbp, flags)
+	const DB *dbp;
+	u_int flags;
+{
+	struct iovec iov[2];
+	BTREE *t;
+	DBT data, key;
+	off_t off;
+	recno_t scursor, trec;
+	int status;
+
+	t = dbp->internal;
+
+	/* Toss any page pinned across calls. */
+	if (t->bt_pinned != NULL) {
+		mpool_put(t->bt_mp, t->bt_pinned, 0);
+		t->bt_pinned = NULL;
+	}
+
+	if (flags == R_RECNOSYNC)
+		return (__bt_sync(dbp, 0));
+
+	if (ISSET(t, R_RDONLY | R_INMEM) || !ISSET(t, R_MODIFIED))
+		return (RET_SUCCESS);
+
+	/* Read any remaining records into the tree. */
+	if (!ISSET(t, R_EOF) && t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR)
+		return (RET_ERROR);
+
+	/* Rewind the file descriptor. */
+	if (lseek(t->bt_rfd, (off_t)0, SEEK_SET) != 0)
+		return (RET_ERROR);
+
+	iov[1].iov_base = "\n";
+	iov[1].iov_len = 1;
+	scursor = t->bt_rcursor;
+
+	key.size = sizeof(recno_t);
+	key.data = &trec;
+
+	status = (dbp->seq)(dbp, &key, &data, R_FIRST);
+        while (status == RET_SUCCESS) {
+		iov[0].iov_base = data.data;
+		iov[0].iov_len = data.size;
+		if (writev(t->bt_rfd, iov, 2) != data.size + 1)
+			return (RET_ERROR);
+                status = (dbp->seq)(dbp, &key, &data, R_NEXT);
+        }
+	t->bt_rcursor = scursor;
+	if (status == RET_ERROR)
+		return (RET_ERROR);
+	if ((off = lseek(t->bt_rfd, (off_t)0, SEEK_CUR)) == -1)
+		return (RET_ERROR);
+	if (ftruncate(t->bt_rfd, off))
+		return (RET_ERROR);
+	CLR(t, R_MODIFIED);
+	return (RET_SUCCESS);
+}
diff --git a/lib/libc/db/recno/rec_delete.c b/lib/libc/db/recno/rec_delete.c
new file mode 100644
index 0000000..35f56b9
--- /dev/null
+++ b/lib/libc/db/recno/rec_delete.c
@@ -0,0 +1,197 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rec_delete.c	8.4 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <db.h>
+#include "recno.h"
+
+static int rec_rdelete __P((BTREE *, recno_t));
+
+/*
+ * __REC_DELETE -- Delete the item(s) referenced by a key.
+ *
+ * Parameters:
+ *	dbp:	pointer to access method
+ *	key:	key to delete
+ *	flags:	R_CURSOR if deleting what the cursor references
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key not found.
+ */
+int
+__rec_delete(dbp, key, flags)
+	const DB *dbp;
+	const DBT *key;
+	u_int flags;
+{
+	BTREE *t;
+	recno_t nrec;
+	int status;
+
+	t = dbp->internal;
+
+	/* Toss any page pinned across calls. */
+	if (t->bt_pinned != NULL) {
+		mpool_put(t->bt_mp, t->bt_pinned, 0);
+		t->bt_pinned = NULL;
+	}
+
+	switch(flags) {
+	case 0:
+		if ((nrec = *(recno_t *)key->data) == 0)
+			goto einval;
+		if (nrec > t->bt_nrecs)
+			return (RET_SPECIAL);
+		--nrec;
+		status = rec_rdelete(t, nrec);
+		break;
+	case R_CURSOR:
+		if (!ISSET(t, B_SEQINIT))
+			goto einval;
+		if (t->bt_nrecs == 0)
+			return (RET_SPECIAL);
+		status = rec_rdelete(t, t->bt_rcursor - 1);
+		if (status == RET_SUCCESS)
+			--t->bt_rcursor;
+		break;
+	default:
+einval:		errno = EINVAL;
+		return (RET_ERROR);
+	}
+
+	if (status == RET_SUCCESS)
+		SET(t, B_MODIFIED | R_MODIFIED);
+	return (status);
+}
+
+/*
+ * REC_RDELETE -- Delete the data matching the specified key.
+ *
+ * Parameters:
+ *	tree:	tree
+ *	nrec:	record to delete
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key not found.
+ */
+static int
+rec_rdelete(t, nrec)
+	BTREE *t;
+	recno_t nrec;
+{
+	EPG *e;
+	PAGE *h;
+	int status;
+
+	/* Find the record; __rec_search pins the page. */
+	if ((e = __rec_search(t, nrec, SDELETE)) == NULL)
+		return (RET_ERROR);
+
+	/* Delete the record. */
+	h = e->page;
+	status = __rec_dleaf(t, h, e->index);
+	if (status != RET_SUCCESS) {
+		mpool_put(t->bt_mp, h, 0);
+		return (status);
+	}
+	mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+	return (RET_SUCCESS);
+}
+
+/*
+ * __REC_DLEAF -- Delete a single record from a recno leaf page.
+ *
+ * Parameters:
+ *	t:	tree
+ *	index:	index on current page to delete
+ *
+ * Returns:
+ *	RET_SUCCESS, RET_ERROR.
+ */
+int
+__rec_dleaf(t, h, index)
+	BTREE *t;
+	PAGE *h;
+	indx_t index;
+{
+	register RLEAF *rl;
+	register indx_t *ip, cnt, offset;
+	register size_t nbytes;
+	char *from;
+	void *to;
+
+	/*
+	 * Delete a record from a recno leaf page.  Internal records are never
+	 * deleted from internal pages, regardless of the records that caused
+	 * them to be added being deleted.  Pages made empty by deletion are
+	 * not reclaimed.  They are, however, made available for reuse.
+	 *
+	 * Pack the remaining entries at the end of the page, shift the indices
+	 * down, overwriting the deleted record and its index.  If the record
+	 * uses overflow pages, make them available for reuse.
+	 */
+	to = rl = GETRLEAF(h, index);
+	if (rl->flags & P_BIGDATA && __ovfl_delete(t, rl->bytes) == RET_ERROR)
+		return (RET_ERROR);
+	nbytes = NRLEAF(rl);
+
+	/*
+	 * Compress the key/data pairs.  Compress and adjust the [BR]LEAF
+	 * offsets.  Reset the headers.
+	 */
+	from = (char *)h + h->upper;
+	memmove(from + nbytes, from, (char *)to - from);
+	h->upper += nbytes;
+
+	offset = h->linp[index];
+	for (cnt = &h->linp[index] - (ip = &h->linp[0]); cnt--; ++ip)
+		if (ip[0] < offset)
+			ip[0] += nbytes;
+	for (cnt = &h->linp[NEXTINDEX(h)] - ip; --cnt; ++ip)
+		ip[0] = ip[1] < offset ? ip[1] + nbytes : ip[1];
+	h->lower -= sizeof(indx_t);
+	--t->bt_nrecs;
+	return (RET_SUCCESS);
+}
diff --git a/lib/libc/db/recno/rec_get.c b/lib/libc/db/recno/rec_get.c
new file mode 100644
index 0000000..3555575
--- /dev/null
+++ b/lib/libc/db/recno/rec_get.c
@@ -0,0 +1,298 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rec_get.c	8.4 (Berkeley) 3/1/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __REC_GET -- Get a record from the btree.
+ *
+ * Parameters:
+ *	dbp:	pointer to access method
+ *	key:	key to find
+ *	data:	data to return
+ *	flag:	currently unused
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key not found.
+ */
+int
+__rec_get(dbp, key, data, flags)
+	const DB *dbp;
+	const DBT *key;
+	DBT *data;
+	u_int flags;
+{
+	BTREE *t;
+	EPG *e;
+	recno_t nrec;
+	int status;
+
+	t = dbp->internal;
+
+	/* Toss any page pinned across calls. */
+	if (t->bt_pinned != NULL) {
+		mpool_put(t->bt_mp, t->bt_pinned, 0);
+		t->bt_pinned = NULL;
+	}
+
+	/* Get currently doesn't take any flags, and keys of 0 are illegal. */
+	if (flags || (nrec = *(recno_t *)key->data) == 0) {
+		errno = EINVAL;
+		return (RET_ERROR);
+	}
+
+	/*
+	 * If we haven't seen this record yet, try to find it in the
+	 * original file.
+	 */
+	if (nrec > t->bt_nrecs) {
+		if (ISSET(t, R_EOF | R_INMEM))
+			return (RET_SPECIAL);
+		if ((status = t->bt_irec(t, nrec)) != RET_SUCCESS)
+			return (status);
+	}
+
+	--nrec;
+	if ((e = __rec_search(t, nrec, SEARCH)) == NULL)
+		return (RET_ERROR);
+
+	status = __rec_ret(t, e, 0, NULL, data);
+	if (ISSET(t, B_DB_LOCK))
+		mpool_put(t->bt_mp, e->page, 0);
+	else
+		t->bt_pinned = e->page;
+	return (status);
+}
+
+/*
+ * __REC_FPIPE -- Get fixed length records from a pipe.
+ *
+ * Parameters:
+ *	t:	tree
+ *	cnt:	records to read
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_fpipe(t, top)
+	BTREE *t;
+	recno_t top;
+{
+	DBT data;
+	recno_t nrec;
+	size_t len;
+	int ch;
+	char *p;
+
+	if (t->bt_dbufsz < t->bt_reclen) {
+		if ((t->bt_dbuf =
+		    (char *)realloc(t->bt_dbuf, t->bt_reclen)) == NULL)
+			return (RET_ERROR);
+		t->bt_dbufsz = t->bt_reclen;
+	}
+	data.data = t->bt_dbuf;
+	data.size = t->bt_reclen;
+
+	for (nrec = t->bt_nrecs; nrec < top; ++nrec) {
+		len = t->bt_reclen;
+		for (p = t->bt_dbuf;; *p++ = ch)
+			if ((ch = getc(t->bt_rfp)) == EOF || !len--) {
+				if (__rec_iput(t, nrec, &data, 0)
+				    != RET_SUCCESS)
+					return (RET_ERROR);
+				break;
+			}
+		if (ch == EOF)
+			break;
+	}
+	if (nrec < top) {
+		SET(t, R_EOF);
+		return (RET_SPECIAL);
+	}
+	return (RET_SUCCESS);
+}
+
+/*
+ * __REC_VPIPE -- Get variable length records from a pipe.
+ *
+ * Parameters:
+ *	t:	tree
+ *	cnt:	records to read
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_vpipe(t, top)
+	BTREE *t;
+	recno_t top;
+{
+	DBT data;
+	recno_t nrec;
+	indx_t len;
+	size_t sz;
+	int bval, ch;
+	char *p;
+
+	bval = t->bt_bval;
+	for (nrec = t->bt_nrecs; nrec < top; ++nrec) {
+		for (p = t->bt_dbuf, sz = t->bt_dbufsz;; *p++ = ch, --sz) {
+			if ((ch = getc(t->bt_rfp)) == EOF || ch == bval) {
+				data.data = t->bt_dbuf;
+				data.size = p - t->bt_dbuf;
+				if (ch == EOF && data.size == 0)
+					break;
+				if (__rec_iput(t, nrec, &data, 0)
+				    != RET_SUCCESS)
+					return (RET_ERROR);
+				break;
+			}
+			if (sz == 0) {
+				len = p - t->bt_dbuf;
+				t->bt_dbufsz += (sz = 256);
+				if ((t->bt_dbuf = (char *)realloc(t->bt_dbuf,
+				    t->bt_dbufsz)) == NULL)
+					return (RET_ERROR);
+				p = t->bt_dbuf + len;
+			}
+		}
+		if (ch == EOF)
+			break;
+	}
+	if (nrec < top) {
+		SET(t, R_EOF);
+		return (RET_SPECIAL);
+	}
+	return (RET_SUCCESS);
+}
+
+/*
+ * __REC_FMAP -- Get fixed length records from a file.
+ *
+ * Parameters:
+ *	t:	tree
+ *	cnt:	records to read
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_fmap(t, top)
+	BTREE *t;
+	recno_t top;
+{
+	DBT data;
+	recno_t nrec;
+	caddr_t sp, ep;
+	size_t len;
+	char *p;
+
+	if (t->bt_dbufsz < t->bt_reclen) {
+		if ((t->bt_dbuf =
+		    (char *)realloc(t->bt_dbuf, t->bt_reclen)) == NULL)
+			return (RET_ERROR);
+		t->bt_dbufsz = t->bt_reclen;
+	}
+	data.data = t->bt_dbuf;
+	data.size = t->bt_reclen;
+
+	sp = t->bt_cmap;
+	ep = t->bt_emap;
+	for (nrec = t->bt_nrecs; nrec < top; ++nrec) {
+		if (sp >= ep) {
+			SET(t, R_EOF);
+			return (RET_SPECIAL);
+		}
+		len = t->bt_reclen;
+		for (p = t->bt_dbuf; sp < ep && len--; *p++ = *sp++);
+		memset(p, t->bt_bval, len);
+		if (__rec_iput(t, nrec, &data, 0) != RET_SUCCESS)
+			return (RET_ERROR);
+	}
+	t->bt_cmap = sp;
+	return (RET_SUCCESS);
+}
+
+/*
+ * __REC_VMAP -- Get variable length records from a file.
+ *
+ * Parameters:
+ *	t:	tree
+ *	cnt:	records to read
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_vmap(t, top)
+	BTREE *t;
+	recno_t top;
+{
+	DBT data;
+	caddr_t sp, ep;
+	recno_t nrec;
+	int bval;
+
+	sp = t->bt_cmap;
+	ep = t->bt_emap;
+	bval = t->bt_bval;
+
+	for (nrec = t->bt_nrecs; nrec < top; ++nrec) {
+		if (sp >= ep) {
+			SET(t, R_EOF);
+			return (RET_SPECIAL);
+		}
+		for (data.data = sp; sp < ep && *sp != bval; ++sp);
+		data.size = sp - (caddr_t)data.data;
+		if (__rec_iput(t, nrec, &data, 0) != RET_SUCCESS)
+			return (RET_ERROR);
+		++sp;
+	}
+	t->bt_cmap = sp;
+	return (RET_SUCCESS);
+}
diff --git a/lib/libc/db/recno/rec_open.c b/lib/libc/db/recno/rec_open.c
new file mode 100644
index 0000000..2a0f354
--- /dev/null
+++ b/lib/libc/db/recno/rec_open.c
@@ -0,0 +1,230 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rec_open.c	8.6 (Berkeley) 2/22/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <db.h>
+#include "recno.h"
+
+DB *
+__rec_open(fname, flags, mode, openinfo, dflags)
+	const char *fname;
+	int flags, mode, dflags;
+	const RECNOINFO *openinfo;
+{
+	BTREE *t;
+	BTREEINFO btopeninfo;
+	DB *dbp;
+	PAGE *h;
+	struct stat sb;
+	int rfd, sverrno;
+
+	/* Open the user's file -- if this fails, we're done. */
+	if (fname != NULL && (rfd = open(fname, flags, mode)) < 0)
+		return (NULL);
+
+	/* Create a btree in memory (backed by disk). */
+	dbp = NULL;
+	if (openinfo) {
+		if (openinfo->flags & ~(R_FIXEDLEN | R_NOKEY | R_SNAPSHOT))
+			goto einval;
+		btopeninfo.flags = 0;
+		btopeninfo.cachesize = openinfo->cachesize;
+		btopeninfo.maxkeypage = 0;
+		btopeninfo.minkeypage = 0;
+		btopeninfo.psize = openinfo->psize;
+		btopeninfo.compare = NULL;
+		btopeninfo.prefix = NULL;
+		btopeninfo.lorder = openinfo->lorder;
+		dbp = __bt_open(openinfo->bfname,
+		    O_RDWR, S_IRUSR | S_IWUSR, &btopeninfo, dflags);
+	} else
+		dbp = __bt_open(NULL, O_RDWR, S_IRUSR | S_IWUSR, NULL, dflags);
+	if (dbp == NULL)
+		goto err;
+
+	/*
+	 * Some fields in the tree structure are recno specific.  Fill them
+	 * in and make the btree structure look like a recno structure.  We
+	 * don't change the bt_ovflsize value, it's close enough and slightly
+	 * bigger.
+	 */
+	t = dbp->internal;
+	if (openinfo) {
+		if (openinfo->flags & R_FIXEDLEN) {
+			SET(t, R_FIXLEN);
+			t->bt_reclen = openinfo->reclen;
+			if (t->bt_reclen == 0)
+				goto einval;
+		}
+		t->bt_bval = openinfo->bval;
+	} else
+		t->bt_bval = '\n';
+
+	SET(t, R_RECNO);
+	if (fname == NULL)
+		SET(t, R_EOF | R_INMEM);
+	else
+		t->bt_rfd = rfd;
+	t->bt_rcursor = 0;
+
+	if (fname != NULL) {
+		/*
+		 * In 4.4BSD, stat(2) returns true for ISSOCK on pipes.
+		 * Unfortunately, that's not portable, so we use lseek
+		 * and check the errno values.
+		 */
+		errno = 0;
+		if (lseek(rfd, (off_t)0, SEEK_CUR) == -1 && errno == ESPIPE) {
+			switch (flags & O_ACCMODE) {
+			case O_RDONLY:
+				SET(t, R_RDONLY);
+				break;
+			default:
+				goto einval;
+			}
+slow:			if ((t->bt_rfp = fdopen(rfd, "r")) == NULL)
+				goto err;
+			SET(t, R_CLOSEFP);
+			t->bt_irec =
+			    ISSET(t, R_FIXLEN) ? __rec_fpipe : __rec_vpipe;
+		} else {
+			switch (flags & O_ACCMODE) {
+			case O_RDONLY:
+				SET(t, R_RDONLY);
+				break;
+			case O_RDWR:
+				break;
+			default:
+				goto einval;
+			}
+
+			if (fstat(rfd, &sb))
+				goto err;
+			/*
+			 * Kluge -- we'd like to test to see if the file is too
+			 * big to mmap.  Since, we don't know what size or type
+			 * off_t's or size_t's are, what the largest unsigned
+			 * integral type is, or what random insanity the local
+			 * C compiler will perpetrate, doing the comparison in
+			 * a portable way is flatly impossible.  Hope that mmap
+			 * fails if the file is too large.
+			 */
+			if (sb.st_size == 0)
+				SET(t, R_EOF);
+			else {
+				t->bt_msize = sb.st_size;
+				if ((t->bt_smap = mmap(NULL, t->bt_msize,
+				    PROT_READ, MAP_PRIVATE, rfd,
+				    (off_t)0)) == (caddr_t)-1)
+					goto slow;
+				t->bt_cmap = t->bt_smap;
+				t->bt_emap = t->bt_smap + sb.st_size;
+				t->bt_irec = ISSET(t, R_FIXLEN) ?
+				    __rec_fmap : __rec_vmap;
+				SET(t, R_MEMMAPPED);
+			}
+		}
+	}
+
+	/* Use the recno routines. */
+	dbp->close = __rec_close;
+	dbp->del = __rec_delete;
+	dbp->fd = __rec_fd;
+	dbp->get = __rec_get;
+	dbp->put = __rec_put;
+	dbp->seq = __rec_seq;
+	dbp->sync = __rec_sync;
+
+	/* If the root page was created, reset the flags. */
+	if ((h = mpool_get(t->bt_mp, P_ROOT, 0)) == NULL)
+		goto err;
+	if ((h->flags & P_TYPE) == P_BLEAF) {
+		h->flags = h->flags & ~P_TYPE | P_RLEAF;
+		mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+	} else
+		mpool_put(t->bt_mp, h, 0);
+
+	if (openinfo && openinfo->flags & R_SNAPSHOT &&
+	    !ISSET(t, R_EOF | R_INMEM) &&
+	    t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR)
+                goto err;
+	return (dbp);
+
+einval:	errno = EINVAL;
+err:	sverrno = errno;
+	if (dbp != NULL)
+		(void)__bt_close(dbp);
+	if (fname != NULL)
+		(void)close(rfd);
+	errno = sverrno;
+	return (NULL);
+}
+
+int
+__rec_fd(dbp)
+	const DB *dbp;
+{
+	BTREE *t;
+
+	t = dbp->internal;
+
+	/* Toss any page pinned across calls. */
+	if (t->bt_pinned != NULL) {
+		mpool_put(t->bt_mp, t->bt_pinned, 0);
+		t->bt_pinned = NULL;
+	}
+
+	/* In-memory database can't have a file descriptor. */
+	if (ISSET(t, R_INMEM)) {
+		errno = ENOENT;
+		return (-1);
+	}
+	return (t->bt_rfd);
+}
diff --git a/lib/libc/db/recno/rec_put.c b/lib/libc/db/recno/rec_put.c
new file mode 100644
index 0000000..590d45b
--- /dev/null
+++ b/lib/libc/db/recno/rec_put.c
@@ -0,0 +1,253 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rec_put.c	8.3 (Berkeley) 3/1/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __REC_PUT -- Add a recno item to the tree.
+ *
+ * Parameters:
+ *	dbp:	pointer to access method
+ *	key:	key
+ *	data:	data
+ *	flag:	R_CURSOR, R_IAFTER, R_IBEFORE, R_NOOVERWRITE
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key is
+ *	already in the tree and R_NOOVERWRITE specified.
+ */
+int
+__rec_put(dbp, key, data, flags)
+	const DB *dbp;
+	DBT *key;
+	const DBT *data;
+	u_int flags;
+{
+	BTREE *t;
+	DBT tdata;
+	recno_t nrec;
+	int status;
+
+	t = dbp->internal;
+
+	/* Toss any page pinned across calls. */
+	if (t->bt_pinned != NULL) {
+		mpool_put(t->bt_mp, t->bt_pinned, 0);
+		t->bt_pinned = NULL;
+	}
+
+	switch (flags) {
+	case R_CURSOR:
+		if (!ISSET(t, B_SEQINIT))
+			goto einval;
+		nrec = t->bt_rcursor;
+		break;
+	case R_SETCURSOR:
+		if ((nrec = *(recno_t *)key->data) == 0)
+			goto einval;
+		break;
+	case R_IAFTER:
+		if ((nrec = *(recno_t *)key->data) == 0) {
+			nrec = 1;
+			flags = R_IBEFORE;
+		}
+		break;
+	case 0:
+	case R_IBEFORE:
+		if ((nrec = *(recno_t *)key->data) == 0)
+			goto einval;
+		break;
+	case R_NOOVERWRITE:
+		if ((nrec = *(recno_t *)key->data) == 0)
+			goto einval;
+		if (nrec <= t->bt_nrecs)
+			return (RET_SPECIAL);
+		break;
+	default:
+einval:		errno = EINVAL;
+		return (RET_ERROR);
+	}
+
+	/*
+	 * Make sure that records up to and including the put record are
+	 * already in the database.  If skipping records, create empty ones.
+	 */
+	if (nrec > t->bt_nrecs) {
+		if (!ISSET(t, R_EOF | R_INMEM) &&
+		    t->bt_irec(t, nrec) == RET_ERROR)
+			return (RET_ERROR);
+		if (nrec > t->bt_nrecs + 1) {
+			if (ISSET(t, R_FIXLEN)) {
+				if ((tdata.data =
+				    (void *)malloc(t->bt_reclen)) == NULL)
+					return (RET_ERROR);
+				tdata.size = t->bt_reclen;
+				memset(tdata.data, t->bt_bval, tdata.size);
+			} else {
+				tdata.data = NULL;
+				tdata.size = 0;
+			}
+			while (nrec > t->bt_nrecs + 1)
+				if (__rec_iput(t,
+				    t->bt_nrecs, &tdata, 0) != RET_SUCCESS)
+					return (RET_ERROR);
+			if (ISSET(t, R_FIXLEN))
+				free(tdata.data);
+		}
+	}
+
+	if ((status = __rec_iput(t, nrec - 1, data, flags)) != RET_SUCCESS)
+		return (status);
+
+	if (flags == R_SETCURSOR)
+		t->bt_rcursor = nrec;
+
+	SET(t, R_MODIFIED);
+	return (__rec_ret(t, NULL, nrec, key, NULL));
+}
+
+/*
+ * __REC_IPUT -- Add a recno item to the tree.
+ *
+ * Parameters:
+ *	t:	tree
+ *	nrec:	record number
+ *	data:	data
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_iput(t, nrec, data, flags)
+	BTREE *t;
+	recno_t nrec;
+	const DBT *data;
+	u_int flags;
+{
+	DBT tdata;
+	EPG *e;
+	PAGE *h;
+	indx_t index, nxtindex;
+	pgno_t pg;
+	size_t nbytes;
+	int dflags, status;
+	char *dest, db[NOVFLSIZE];
+
+	/*
+	 * If the data won't fit on a page, store it on indirect pages.
+	 *
+	 * XXX
+	 * If the insert fails later on, these pages aren't recovered.
+	 */
+	if (data->size > t->bt_ovflsize) {
+		if (__ovfl_put(t, data, &pg) == RET_ERROR)
+			return (RET_ERROR);
+		tdata.data = db;
+		tdata.size = NOVFLSIZE;
+		*(pgno_t *)db = pg;
+		*(size_t *)(db + sizeof(pgno_t)) = data->size;
+		dflags = P_BIGDATA;
+		data = &tdata;
+	} else
+		dflags = 0;
+
+	/* __rec_search pins the returned page. */
+	if ((e = __rec_search(t, nrec,
+	    nrec > t->bt_nrecs || flags == R_IAFTER || flags == R_IBEFORE ?
+	    SINSERT : SEARCH)) == NULL)
+		return (RET_ERROR);
+
+	h = e->page;
+	index = e->index;
+
+	/*
+	 * Add the specified key/data pair to the tree.  The R_IAFTER and
+	 * R_IBEFORE flags insert the key after/before the specified key.
+	 *
+	 * Pages are split as required.
+	 */
+	switch (flags) {
+	case R_IAFTER:
+		++index;
+		break;
+	case R_IBEFORE:
+		break;
+	default:
+		if (nrec < t->bt_nrecs &&
+		    __rec_dleaf(t, h, index) == RET_ERROR) {
+			mpool_put(t->bt_mp, h, 0);
+			return (RET_ERROR);
+		}
+		break;
+	}
+
+	/*
+	 * If not enough room, split the page.  The split code will insert
+	 * the key and data and unpin the current page.  If inserting into
+	 * the offset array, shift the pointers up.
+	 */
+	nbytes = NRLEAFDBT(data->size);
+	if (h->upper - h->lower < nbytes + sizeof(indx_t)) {
+		status = __bt_split(t, h, NULL, data, dflags, nbytes, index);
+		if (status == RET_SUCCESS)
+			++t->bt_nrecs;
+		return (status);
+	}
+
+	if (index < (nxtindex = NEXTINDEX(h)))
+		memmove(h->linp + index + 1, h->linp + index,
+		    (nxtindex - index) * sizeof(indx_t));
+	h->lower += sizeof(indx_t);
+
+	h->linp[index] = h->upper -= nbytes;
+	dest = (char *)h + h->upper;
+	WR_RLEAF(dest, data, dflags);
+
+	++t->bt_nrecs;
+	SET(t, B_MODIFIED);
+	mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+
+	return (RET_SUCCESS);
+}
diff --git a/lib/libc/db/recno/rec_search.c b/lib/libc/db/recno/rec_search.c
new file mode 100644
index 0000000..a1feff8
--- /dev/null
+++ b/lib/libc/db/recno/rec_search.c
@@ -0,0 +1,127 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rec_search.c	8.3 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __REC_SEARCH -- Search a btree for a key.
+ *
+ * Parameters:
+ *	t:	tree to search
+ *	recno:	key to find
+ *	op: 	search operation
+ *
+ * Returns:
+ *	EPG for matching record, if any, or the EPG for the location of the
+ *	key, if it were inserted into the tree.
+ *
+ * Returns:
+ *	The EPG for matching record, if any, or the EPG for the location
+ *	of the key, if it were inserted into the tree, is entered into
+ *	the bt_cur field of the tree.  A pointer to the field is returned.
+ */
+EPG *
+__rec_search(t, recno, op)
+	BTREE *t;
+	recno_t recno;
+	enum SRCHOP op;
+{
+	register indx_t index;
+	register PAGE *h;
+	EPGNO *parent;
+	RINTERNAL *r;
+	pgno_t pg;
+	indx_t top;
+	recno_t total;
+	int sverrno;
+
+	BT_CLR(t);
+	for (pg = P_ROOT, total = 0;;) {
+		if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+			goto err;
+		if (h->flags & P_RLEAF) {
+			t->bt_cur.page = h;
+			t->bt_cur.index = recno - total;
+			return (&t->bt_cur);
+		}
+		for (index = 0, top = NEXTINDEX(h);;) {
+			r = GETRINTERNAL(h, index);
+			if (++index == top || total + r->nrecs > recno)
+				break;
+			total += r->nrecs;
+		}
+
+		if (__bt_push(t, pg, index - 1) == RET_ERROR)
+			return (NULL);
+
+		pg = r->pgno;
+		switch (op) {
+		case SDELETE:
+			--GETRINTERNAL(h, (index - 1))->nrecs;
+			mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+			break;
+		case SINSERT:
+			++GETRINTERNAL(h, (index - 1))->nrecs;
+			mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+			break;
+		case SEARCH:
+			mpool_put(t->bt_mp, h, 0);
+			break;
+		}
+
+	}
+	/* Try and recover the tree. */
+err:	sverrno = errno;
+	if (op != SEARCH)
+		while  ((parent = BT_POP(t)) != NULL) {
+			if ((h = mpool_get(t->bt_mp, parent->pgno, 0)) == NULL)
+				break;
+			if (op == SINSERT)
+				--GETRINTERNAL(h, parent->index)->nrecs;
+			else
+				++GETRINTERNAL(h, parent->index)->nrecs;
+                        mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+                }
+	errno = sverrno;
+	return (NULL);
+}
diff --git a/lib/libc/db/recno/rec_seq.c b/lib/libc/db/recno/rec_seq.c
new file mode 100644
index 0000000..56f78e7
--- /dev/null
+++ b/lib/libc/db/recno/rec_seq.c
@@ -0,0 +1,131 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)rec_seq.c	8.2 (Berkeley) 9/7/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __REC_SEQ -- Recno sequential scan interface.
+ *
+ * Parameters:
+ *	dbp:	pointer to access method
+ *	key:	key for positioning and return value
+ *	data:	data return value
+ *	flags:	R_CURSOR, R_FIRST, R_LAST, R_NEXT, R_PREV.
+ *
+ * Returns:
+ *	RET_ERROR, RET_SUCCESS or RET_SPECIAL if there's no next key.
+ */
+int
+__rec_seq(dbp, key, data, flags)
+	const DB *dbp;
+	DBT *key, *data;
+	u_int flags;
+{
+	BTREE *t;
+	EPG *e;
+	recno_t nrec;
+	int status;
+
+	t = dbp->internal;
+
+	/* Toss any page pinned across calls. */
+	if (t->bt_pinned != NULL) {
+		mpool_put(t->bt_mp, t->bt_pinned, 0);
+		t->bt_pinned = NULL;
+	}
+
+	switch(flags) {
+	case R_CURSOR:
+		if ((nrec = *(recno_t *)key->data) == 0)
+			goto einval;
+		break;
+	case R_NEXT:
+		if (ISSET(t, B_SEQINIT)) {
+			nrec = t->bt_rcursor + 1;
+			break;
+		}
+		/* FALLTHROUGH */
+	case R_FIRST:
+		nrec = 1;
+		break;
+	case R_PREV:
+		if (ISSET(t, B_SEQINIT)) {
+			if ((nrec = t->bt_rcursor - 1) == 0)
+				return (RET_SPECIAL);
+			break;
+		}
+		/* FALLTHROUGH */
+	case R_LAST:
+		if (!ISSET(t, R_EOF | R_INMEM) &&
+		    t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR)
+			return (RET_ERROR);
+		nrec = t->bt_nrecs;
+		break;
+	default:
+einval:		errno = EINVAL;
+		return (RET_ERROR);
+	}
+
+	if (t->bt_nrecs == 0 || nrec > t->bt_nrecs) {
+		if (!ISSET(t, R_EOF | R_INMEM) &&
+		    (status = t->bt_irec(t, nrec)) != RET_SUCCESS)
+			return (status);
+		if (t->bt_nrecs == 0 || nrec > t->bt_nrecs)
+			return (RET_SPECIAL);
+	}
+
+	if ((e = __rec_search(t, nrec - 1, SEARCH)) == NULL)
+		return (RET_ERROR);
+
+	SET(t, B_SEQINIT);
+	t->bt_rcursor = nrec;
+
+	status = __rec_ret(t, e, nrec, key, data);
+	if (ISSET(t, B_DB_LOCK))
+		mpool_put(t->bt_mp, e->page, 0);
+	else
+		t->bt_pinned = e->page;
+	return (status);
+}
diff --git a/lib/libc/db/recno/rec_utils.c b/lib/libc/db/recno/rec_utils.c
new file mode 100644
index 0000000..f7fb145
--- /dev/null
+++ b/lib/libc/db/recno/rec_utils.c
@@ -0,0 +1,114 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rec_utils.c	8.3 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __REC_RET -- Build return data as a result of search or scan.
+ *
+ * Parameters:
+ *	t:	tree
+ *	d:	LEAF to be returned to the user.
+ *	data:	user's data structure
+ *
+ * Returns:
+ *	RET_SUCCESS, RET_ERROR.
+ */
+int
+__rec_ret(t, e, nrec, key, data)
+	BTREE *t;
+	EPG *e;
+	recno_t nrec;
+	DBT *key, *data;
+{
+	register RLEAF *rl;
+	register void *p;
+
+	if (data == NULL)
+		goto retkey;
+
+	rl = GETRLEAF(e->page, e->index);
+
+	/*
+	 * We always copy big data to make it contigous.  Otherwise, we
+	 * leave the page pinned and don't copy unless the user specified
+	 * concurrent access.
+	 */
+	if (rl->flags & P_BIGDATA) {
+		if (__ovfl_get(t, rl->bytes,
+		    &data->size, &t->bt_dbuf, &t->bt_dbufsz))
+			return (RET_ERROR);
+		data->data = t->bt_dbuf;
+	} else if (ISSET(t, B_DB_LOCK)) {
+		/* Use +1 in case the first record retrieved is 0 length. */
+		if (rl->dsize + 1 > t->bt_dbufsz) {
+			if ((p =
+			    (void *)realloc(t->bt_dbuf, rl->dsize + 1)) == NULL)
+				return (RET_ERROR);
+			t->bt_dbuf = p;
+			t->bt_dbufsz = rl->dsize + 1;
+		}
+		memmove(t->bt_dbuf, rl->bytes, rl->dsize);
+		data->size = rl->dsize;
+		data->data = t->bt_dbuf;
+	} else {
+		data->size = rl->dsize;
+		data->data = rl->bytes;
+	}
+
+retkey:	if (key == NULL)
+		return (RET_SUCCESS);
+
+	/* We have to copy the key, it's not on the page. */
+	if (sizeof(recno_t) > t->bt_kbufsz) {
+		if ((p = (void *)realloc(t->bt_kbuf, sizeof(recno_t))) == NULL)
+			return (RET_ERROR);
+		t->bt_kbuf = p;
+		t->bt_kbufsz = sizeof(recno_t);
+	}
+	memmove(t->bt_kbuf, &nrec, sizeof(recno_t));
+	key->size = sizeof(recno_t);
+	key->data = t->bt_kbuf;
+	return (RET_SUCCESS);
+}
diff --git a/lib/libc/db/recno/recno.h b/lib/libc/db/recno/recno.h
new file mode 100644
index 0000000..bec772c
--- /dev/null
+++ b/lib/libc/db/recno/recno.h
@@ -0,0 +1,39 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)recno.h	8.1 (Berkeley) 6/4/93
+ */
+
+enum SRCHOP { SDELETE, SINSERT, SEARCH};	/* Rec_search operation. */
+
+#include "../btree/btree.h"
+#include "extern.h"
diff --git a/lib/libc/db/test/Makefile b/lib/libc/db/test/Makefile
new file mode 100644
index 0000000..c816432
--- /dev/null
+++ b/lib/libc/db/test/Makefile
@@ -0,0 +1,17 @@
+#	@(#)Makefile	8.9 (Berkeley) 2/21/94
+
+PROG=	dbtest
+OBJS=	dbtest.o strerror.o
+
+# Add -DSTATISTICS to CFLAGS to get btree statistical use info.
+# Note, the db library has to be compiled for statistics as well.
+CFLAGS=	-D__DBINTERFACE_PRIVATE -DDEBUG -O ${INC}
+
+dbtest: ${OBJS} ${LIB}
+	${CC} -o $@ ${OBJS} ${LIB}
+
+strerror.o: ../PORT/clib/strerror.c
+	${CC} -c ../PORT/clib/strerror.c
+
+clean:
+	rm -f gmon.out ${OBJS} ${PROG} t1 t2 t3
diff --git a/lib/libc/db/test/README b/lib/libc/db/test/README
new file mode 100644
index 0000000..8631c77
--- /dev/null
+++ b/lib/libc/db/test/README
@@ -0,0 +1,55 @@
+#	@(#)README	8.2 (Berkeley) 2/21/94
+
+To build this portably, try something like:
+
+    make INC="-I../PORT/MACH/ -I../PORT/MACH/include" LIB=../PORT/MACH/libdb.a
+
+where MACH is the machine, i.e. "sunos.4.1.1".
+
+To run the tests, enter "sh run.test".  If your system dictionary isn't
+in /usr/share/dict/words, edit run.test to reflect the correct place.
+
+=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+The script file consists of lines with a initial character which is
+the "command" for that line.  Legal characters are as follows:
+
+c: compare a record
+	+ must be followed by [kK][dD]; the data value in the database
+	  associated with the specified key is compared to the specified
+	  data value.
+e: echo a string
+	+ writes out the rest of the line into the output file; if the
+	  last character is not a carriage-return, a newline is appended.
+g: do a get command
+	+ must be followed by [kK]
+	+ writes out the retrieved data DBT.
+p: do a put command
+	+ must be followed by [kK][dD]
+r: do a del command
+	+ must be followed by [kK]
+s: do a seq command
+	+ writes out the retrieved data DBT.
+f: set the flags for the next command
+	+ no value zero's the flags
+D [file]: data file
+	+ set the current data value to the contents of the file
+d [data]:
+	+ set the current key value to the contents of the line.
+K [file]: key file
+	+ set the current key value to the contents of the file
+k [data]:
+	+ set the current key value to the contents of the line.
+o [r]: dump [reverse]
+	+ dump the database out, if 'r' is set, in reverse order.
+
+Options to dbtest are as follows:
+
+	-f: Use the file argument as the database file.
+	-i: Use the rest of the argument to set elements in the info
+	    structure.  If the type is btree, then "-i cachesize=10240"
+	    will set BTREEINFO.cachesize to 10240.
+	-o: The rest of the argument is the output file instead of
+	    using stdout.
+
+Dbtest requires two arguments, the type of access "hash", "recno" or
+"btree", and the script name.
diff --git a/lib/libc/db/test/btree.tests/main.c b/lib/libc/db/test/btree.tests/main.c
new file mode 100644
index 0000000..39c1da0
--- /dev/null
+++ b/lib/libc/db/test/btree.tests/main.c
@@ -0,0 +1,765 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)main.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <fcntl.h>
+#include <db.h>
+#include <errno.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include "btree.h"
+
+typedef struct cmd_table {
+	char *cmd;
+	int nargs;
+	int rconv;
+	void (*func) __P((DB *, char **));
+	char *usage, *descrip;
+} cmd_table;
+
+int stopstop;
+DB *globaldb;
+
+void append	__P((DB *, char **));
+void bstat	__P((DB *, char **));
+void cursor	__P((DB *, char **));
+void delcur	__P((DB *, char **));
+void delete	__P((DB *, char **));
+void dump	__P((DB *, char **));
+void first	__P((DB *, char **));
+void get	__P((DB *, char **));
+void help	__P((DB *, char **));
+void iafter	__P((DB *, char **));
+void ibefore	__P((DB *, char **));
+void icursor	__P((DB *, char **));
+void insert	__P((DB *, char **));
+void keydata	__P((DBT *, DBT *));
+void last	__P((DB *, char **));
+void list	__P((DB *, char **));
+void load	__P((DB *, char **));
+void mstat	__P((DB *, char **));
+void next	__P((DB *, char **));
+int  parse	__P((char *, char **, int));
+void previous	__P((DB *, char **));
+void show	__P((DB *, char **));
+void usage	__P((void));
+void user	__P((DB *));
+
+cmd_table commands[] = {
+	"?",	0, 0, help, "help", NULL,
+	"a",	2, 1, append, "append key def", "append key with data def",
+	"b",	0, 0, bstat, "bstat", "stat btree",
+	"c",	1, 1, cursor,  "cursor word", "move cursor to word",
+	"delc",	0, 0, delcur, "delcur", "delete key the cursor references",
+	"dele",	1, 1, delete, "delete word", "delete word",
+	"d",	0, 0, dump, "dump", "dump database",
+	"f",	0, 0, first, "first", "move cursor to first record",
+	"g",	1, 1, get, "get key", "locate key",
+	"h",	0, 0, help, "help", "print command summary",
+	"ia",	2, 1, iafter, "iafter key data", "insert data after key",
+	"ib",	2, 1, ibefore, "ibefore key data", "insert data before key",
+	"ic",	2, 1, icursor, "icursor key data", "replace cursor",
+	"in",	2, 1, insert, "insert key def", "insert key with data def",
+	"la",	0, 0, last, "last", "move cursor to last record",
+	"li",	1, 1, list, "list file", "list to a file",
+	"loa",	1, 0, load, "load file", NULL,
+	"loc",	1, 1, get, "get key", NULL,
+	"m",	0, 0, mstat, "mstat", "stat memory pool",
+	"n",	0, 0, next, "next", "move cursor forward one record",
+	"p",	0, 0, previous, "previous", "move cursor back one record",
+	"q",	0, 0, NULL, "quit", "quit",
+	"sh",	1, 0, show, "show page", "dump a page",
+	{ NULL },
+};
+
+int recno;					/* use record numbers */
+char *dict = "words";				/* default dictionary */
+char *progname;
+
+int
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	int c;
+	DB *db;
+	BTREEINFO b;
+
+	progname = *argv;
+
+	b.flags = 0;
+	b.cachesize = 0;
+	b.maxkeypage = 0;
+	b.minkeypage = 0;
+	b.psize = 0;
+	b.compare = NULL;
+	b.prefix = NULL;
+	b.lorder = 0;
+
+	while ((c = getopt(argc, argv, "bc:di:lp:ru")) != EOF) {
+		switch (c) {
+		case 'b':
+			b.lorder = BIG_ENDIAN;
+			break;
+		case 'c':
+			b.cachesize = atoi(optarg);
+			break;
+		case 'd':
+			b.flags |= R_DUP;
+			break;
+		case 'i':
+			dict = optarg;
+			break;
+		case 'l':
+			b.lorder = LITTLE_ENDIAN;
+			break;
+		case 'p':
+			b.psize = atoi(optarg);
+			break;
+		case 'r':
+			recno = 1;
+			break;
+		case 'u':
+			b.flags = 0;
+			break;
+		default:
+			usage();
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	if (recno)
+		db = dbopen(*argv == NULL ? NULL : *argv, O_RDWR,
+		    0, DB_RECNO, NULL);
+	else
+		db = dbopen(*argv == NULL ? NULL : *argv, O_CREAT|O_RDWR,
+		    0600, DB_BTREE, &b);
+
+	if (db == NULL) {
+		(void)fprintf(stderr, "dbopen: %s\n", strerror(errno));
+		exit(1);
+	}
+	globaldb = db;
+	user(db);
+	exit(0);
+	/* NOTREACHED */
+}
+
+void
+user(db)
+	DB *db;
+{
+	FILE *ifp;
+	int argc, i, last;
+	char *lbuf, *argv[4], buf[512];
+
+	if ((ifp = fopen("/dev/tty", "r")) == NULL) {
+		(void)fprintf(stderr,
+		    "/dev/tty: %s\n", strerror(errno));
+		exit(1);
+	}
+	for (last = 0;;) {
+		(void)printf("> ");
+		(void)fflush(stdout);
+		if ((lbuf = fgets(&buf[0], 512, ifp)) == NULL)
+			break;
+		if (lbuf[0] == '\n') {
+			i = last;
+			goto uselast;
+		}
+		lbuf[strlen(lbuf) - 1] = '\0';
+
+		if (lbuf[0] == 'q')
+			break;
+
+		argc = parse(lbuf, &argv[0], 3);
+		if (argc == 0)
+			continue;
+
+		for (i = 0; commands[i].cmd != NULL; i++)
+			if (strncmp(commands[i].cmd, argv[0],
+			    strlen(commands[i].cmd)) == 0)
+				break;
+
+		if (commands[i].cmd == NULL) {
+			(void)fprintf(stderr,
+			    "%s: command unknown ('help' for help)\n", lbuf);
+			continue;
+		}
+
+		if (commands[i].nargs != argc - 1) {
+			(void)fprintf(stderr, "usage: %s\n", commands[i].usage);
+			continue;
+		}
+
+		if (recno && commands[i].rconv) {
+			static recno_t nlong;
+			nlong = atoi(argv[1]);
+			argv[1] = (char *)&nlong;
+		}
+uselast:	last = i;
+		(*commands[i].func)(db, argv);
+	}
+	if ((db->sync)(db) == RET_ERROR)
+		perror("dbsync");
+	else if ((db->close)(db) == RET_ERROR)
+		perror("dbclose");
+}
+
+int
+parse(lbuf, argv, maxargc)
+	char *lbuf, **argv;
+	int maxargc;
+{
+	int argc = 0;
+	char *c;
+
+	c = lbuf;
+	while (isspace(*c))
+		c++;
+	while (*c != '\0' && argc < maxargc) {
+		*argv++ = c;
+		argc++;
+		while (!isspace(*c) && *c != '\0') {
+			c++;
+		}
+		while (isspace(*c))
+			*c++ = '\0';
+	}
+	return (argc);
+}
+
+void
+append(db, argv)
+	DB *db;
+	char **argv;
+{
+	DBT key, data;
+	int status;
+
+	if (!recno) {
+		(void)fprintf(stderr,
+		    "append only available for recno db's.\n");
+		return;
+	}
+	key.data = argv[1];
+	key.size = sizeof(recno_t);
+	data.data = argv[2];
+	data.size = strlen(data.data);
+	status = (db->put)(db, &key, &data, R_APPEND);
+	switch (status) {
+	case RET_ERROR:
+		perror("append/put");
+		break;
+	case RET_SPECIAL:
+		(void)printf("%s (duplicate key)\n", argv[1]);
+		break;
+	case RET_SUCCESS:
+		break;
+	}
+}
+
+void
+cursor(db, argv)
+	DB *db;
+	char **argv;
+{
+	DBT data, key;
+	int status;
+
+	key.data = argv[1];
+	if (recno)
+		key.size = sizeof(recno_t);
+	else
+		key.size = strlen(argv[1]) + 1;
+	status = (*db->seq)(db, &key, &data, R_CURSOR);
+	switch (status) {
+	case RET_ERROR:
+		perror("cursor/seq");
+		break;
+	case RET_SPECIAL:
+		(void)printf("key not found\n");
+		break;
+	case RET_SUCCESS:
+		keydata(&key, &data);
+		break;
+	}
+}
+
+void
+delcur(db, argv)
+	DB *db;
+	char **argv;
+{
+	int status;
+
+	status = (*db->del)(db, NULL, R_CURSOR);
+
+	if (status == RET_ERROR)
+		perror("delcur/del");
+}
+
+void
+delete(db, argv)
+	DB *db;
+	char **argv;
+{
+	DBT key;
+	int status;
+
+	key.data = argv[1];
+	if (recno)
+		key.size = sizeof(recno_t);
+	else
+		key.size = strlen(argv[1]) + 1;
+
+	status = (*db->del)(db, &key, 0);
+	switch (status) {
+	case RET_ERROR:
+		perror("delete/del");
+		break;
+	case RET_SPECIAL:
+		(void)printf("key not found\n");
+		break;
+	case RET_SUCCESS:
+		break;
+	}
+}
+
+void
+dump(db, argv)
+	DB *db;
+	char **argv;
+{
+	__bt_dump(db);
+}
+
+void
+first(db, argv)
+	DB *db;
+	char **argv;
+{
+	DBT data, key;
+	int status;
+
+	status = (*db->seq)(db, &key, &data, R_FIRST);
+
+	switch (status) {
+	case RET_ERROR:
+		perror("first/seq");
+		break;
+	case RET_SPECIAL:
+		(void)printf("no more keys\n");
+		break;
+	case RET_SUCCESS:
+		keydata(&key, &data);
+		break;
+	}
+}
+
+void
+get(db, argv)
+	DB *db;
+	char **argv;
+{
+	DBT data, key;
+	int status;
+
+	key.data = argv[1];
+	if (recno)
+		key.size = sizeof(recno_t);
+	else
+		key.size = strlen(argv[1]) + 1;
+
+	status = (*db->get)(db, &key, &data, 0);
+
+	switch (status) {
+	case RET_ERROR:
+		perror("get/get");
+		break;
+	case RET_SPECIAL:
+		(void)printf("key not found\n");
+		break;
+	case RET_SUCCESS:
+		keydata(&key, &data);
+		break;
+	}
+}
+
+void
+help(db, argv)
+	DB *db;
+	char **argv;
+{
+	int i;
+
+	for (i = 0; commands[i].cmd; i++)
+		if (commands[i].descrip)
+			(void)printf("%s: %s\n",
+			    commands[i].usage, commands[i].descrip);
+}
+
+void
+iafter(db, argv)
+	DB *db;
+	char **argv;
+{
+	DBT key, data;
+	int status;
+
+	if (!recno) {
+		(void)fprintf(stderr,
+		    "iafter only available for recno db's.\n");
+		return;
+	}
+	key.data = argv[1];
+	key.size = sizeof(recno_t);
+	data.data = argv[2];
+	data.size = strlen(data.data);
+	status = (db->put)(db, &key, &data, R_IAFTER);
+	switch (status) {
+	case RET_ERROR:
+		perror("iafter/put");
+		break;
+	case RET_SPECIAL:
+		(void)printf("%s (duplicate key)\n", argv[1]);
+		break;
+	case RET_SUCCESS:
+		break;
+	}
+}
+
+void
+ibefore(db, argv)
+	DB *db;
+	char **argv;
+{
+	DBT key, data;
+	int status;
+
+	if (!recno) {
+		(void)fprintf(stderr,
+		    "ibefore only available for recno db's.\n");
+		return;
+	}
+	key.data = argv[1];
+	key.size = sizeof(recno_t);
+	data.data = argv[2];
+	data.size = strlen(data.data);
+	status = (db->put)(db, &key, &data, R_IBEFORE);
+	switch (status) {
+	case RET_ERROR:
+		perror("ibefore/put");
+		break;
+	case RET_SPECIAL:
+		(void)printf("%s (duplicate key)\n", argv[1]);
+		break;
+	case RET_SUCCESS:
+		break;
+	}
+}
+
+void
+icursor(db, argv)
+	DB *db;
+	char **argv;
+{
+	int status;
+	DBT data, key;
+
+	key.data = argv[1];
+	if (recno)
+		key.size = sizeof(recno_t);
+	else
+		key.size = strlen(argv[1]) + 1;
+	data.data = argv[2];
+	data.size = strlen(argv[2]) + 1;
+
+	status = (*db->put)(db, &key, &data, R_CURSOR);
+	switch (status) {
+	case RET_ERROR:
+		perror("icursor/put");
+		break;
+	case RET_SPECIAL:
+		(void)printf("%s (duplicate key)\n", argv[1]);
+		break;
+	case RET_SUCCESS:
+		break;
+	}
+}
+
+void
+insert(db, argv)
+	DB *db;
+	char **argv;
+{
+	int status;
+	DBT data, key;
+
+	key.data = argv[1];
+	if (recno)
+		key.size = sizeof(recno_t);
+	else
+		key.size = strlen(argv[1]) + 1;
+	data.data = argv[2];
+	data.size = strlen(argv[2]) + 1;
+
+	status = (*db->put)(db, &key, &data, R_NOOVERWRITE);
+	switch (status) {
+	case RET_ERROR:
+		perror("insert/put");
+		break;
+	case RET_SPECIAL:
+		(void)printf("%s (duplicate key)\n", argv[1]);
+		break;
+	case RET_SUCCESS:
+		break;
+	}
+}
+
+void
+last(db, argv)
+	DB *db;
+	char **argv;
+{
+	DBT data, key;
+	int status;
+
+	status = (*db->seq)(db, &key, &data, R_LAST);
+
+	switch (status) {
+	case RET_ERROR:
+		perror("last/seq");
+		break;
+	case RET_SPECIAL:
+		(void)printf("no more keys\n");
+		break;
+	case RET_SUCCESS:
+		keydata(&key, &data);
+		break;
+	}
+}
+
+void
+list(db, argv)
+	DB *db;
+	char **argv;
+{
+	DBT data, key;
+	FILE *fp;
+	int status;
+
+	if ((fp = fopen(argv[1], "w")) == NULL) {
+		(void)fprintf(stderr, "%s: %s\n", argv[1], strerror(errno));
+		return;
+	}
+	status = (*db->seq)(db, &key, &data, R_FIRST);
+	while (status == RET_SUCCESS) {
+		(void)fprintf(fp, "%s\n", key.data);
+		status = (*db->seq)(db, &key, &data, R_NEXT);
+	}
+	if (status == RET_ERROR)
+		perror("list/seq");
+}
+
+DB *BUGdb;
+void
+load(db, argv)
+	DB *db;
+	char **argv;
+{
+	register char *p, *t;
+	FILE *fp;
+	DBT data, key;
+	recno_t cnt;
+	size_t len;
+	int status;
+	char *lp, buf[16 * 1024];
+
+	BUGdb = db;
+	if ((fp = fopen(argv[1], "r")) == NULL) {
+		(void)fprintf(stderr, "%s: %s\n", argv[1], strerror(errno));
+		return;
+	}
+	(void)printf("loading %s...\n", argv[1]);
+
+	for (cnt = 1; (lp = fgetline(fp, &len)) != NULL; ++cnt) {
+		if (recno) {
+			key.data = &cnt;
+			key.size = sizeof(recno_t);
+			data.data = lp;
+			data.size = len + 1;
+		} else {
+			key.data = lp;
+			key.size = len + 1;
+			for (p = lp + len - 1, t = buf; p >= lp; *t++ = *p--);
+			*t = '\0';
+			data.data = buf;
+			data.size = len + 1;
+		}
+
+		status = (*db->put)(db, &key, &data, R_NOOVERWRITE);
+		switch (status) {
+		case RET_ERROR:
+			perror("load/put");
+			exit(1);
+		case RET_SPECIAL:
+			if (recno)
+				(void)fprintf(stderr,
+				    "duplicate: %ld {%s}\n", cnt, data.data);
+			else
+				(void)fprintf(stderr,
+				    "duplicate: %ld {%s}\n", cnt, key.data);
+			exit(1);
+		case RET_SUCCESS:
+			break;
+		}
+	}
+	(void)fclose(fp);
+}
+
+void
+next(db, argv)
+	DB *db;
+	char **argv;
+{
+	DBT data, key;
+	int status;
+
+	status = (*db->seq)(db, &key, &data, R_NEXT);
+
+	switch (status) {
+	case RET_ERROR:
+		perror("next/seq");
+		break;
+	case RET_SPECIAL:
+		(void)printf("no more keys\n");
+		break;
+	case RET_SUCCESS:
+		keydata(&key, &data);
+		break;
+	}
+}
+
+void
+previous(db, argv)
+	DB *db;
+	char **argv;
+{
+	DBT data, key;
+	int status;
+
+	status = (*db->seq)(db, &key, &data, R_PREV);
+
+	switch (status) {
+	case RET_ERROR:
+		perror("previous/seq");
+		break;
+	case RET_SPECIAL:
+		(void)printf("no more keys\n");
+		break;
+	case RET_SUCCESS:
+		keydata(&key, &data);
+		break;
+	}
+}
+
+void
+show(db, argv)
+	DB *db;
+	char **argv;
+{
+	BTREE *t;
+	PAGE *h;
+	pgno_t pg;
+
+	pg = atoi(argv[1]);
+	t = db->internal;
+	if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL) {
+		(void)printf("getpage of %ld failed\n", pg);
+		return;
+	}
+	if (pg == 0)
+		__bt_dmpage(h);
+	else
+		__bt_dpage(h);
+	mpool_put(t->bt_mp, h, 0);
+}
+
+void
+bstat(db, argv)
+	DB *db;
+	char **argv;
+{
+	(void)printf("BTREE\n");
+	__bt_stat(db);
+}
+
+void
+mstat(db, argv)
+	DB *db;
+	char **argv;
+{
+	(void)printf("MPOOL\n");
+	mpool_stat(((BTREE *)db->internal)->bt_mp);
+}
+
+void
+keydata(key, data)
+	DBT *key, *data;
+{
+	if (!recno && key->size > 0)
+		(void)printf("%s/", key->data);
+	if (data->size > 0)
+		(void)printf("%s", data->data);
+	(void)printf("\n");
+}
+
+void
+usage()
+{
+	(void)fprintf(stderr,
+	    "usage: %s [-bdlu] [-c cache] [-i file] [-p page] [file]\n",
+	    progname);
+	exit (1);
+}
diff --git a/lib/libc/db/test/dbtest.c b/lib/libc/db/test/dbtest.c
new file mode 100644
index 0000000..c526415
--- /dev/null
+++ b/lib/libc/db/test/dbtest.c
@@ -0,0 +1,666 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1992, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)dbtest.c	8.8 (Berkeley) 2/21/94";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <db.h>
+
+enum S { COMMAND, COMPARE, GET, PUT, REMOVE, SEQ, SEQFLAG, KEY, DATA };
+
+void	 compare __P((DBT *, DBT *));
+DBTYPE	 dbtype __P((char *));
+void	 dump __P((DB *, int));
+void	 err __P((const char *, ...));
+void	 get __P((DB *, DBT *));
+void	 getdata __P((DB *, DBT *, DBT *));
+void	 put __P((DB *, DBT *, DBT *));
+void	 rem __P((DB *, DBT *));
+void	*rfile __P((char *, size_t *));
+void	 seq __P((DB *, DBT *));
+u_int	 setflags __P((char *));
+void	*setinfo __P((DBTYPE, char *));
+void	 usage __P((void));
+void	*xmalloc __P((char *, size_t));
+
+DBTYPE type;
+void *infop;
+u_long lineno;
+u_int flags;
+int ofd = STDOUT_FILENO;
+
+DB *XXdbp;				/* Global for gdb. */
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	extern int optind;
+	extern char *optarg;
+	enum S command, state;
+	DB *dbp;
+	DBT data, key, keydata;
+	size_t len;
+	int ch, oflags;
+	char *fname, *infoarg, *p, buf[8 * 1024];
+
+	infoarg = NULL;
+	fname = NULL;
+	oflags = O_CREAT | O_RDWR;
+	while ((ch = getopt(argc, argv, "f:i:lo:")) != EOF)
+		switch(ch) {
+		case 'f':
+			fname = optarg;
+			break;
+		case 'i':
+			infoarg = optarg;
+			break;
+		case 'l':
+			oflags |= DB_LOCK;
+			break;
+		case 'o':
+			if ((ofd = open(optarg,
+			    O_WRONLY|O_CREAT|O_TRUNC, 0666)) < 0)
+				err("%s: %s", optarg, strerror(errno));
+			break;
+		case '?':
+		default:
+			usage();
+		}
+	argc -= optind;
+	argv += optind;
+
+	if (argc != 2)
+		usage();
+
+	/* Set the type. */
+	type = dbtype(*argv++);
+
+	/* Open the descriptor file. */
+	if (freopen(*argv, "r", stdin) == NULL)
+		err("%s: %s", *argv, strerror(errno));
+
+	/* Set up the db structure as necessary. */
+	if (infoarg == NULL)
+		infop = NULL;
+	else
+		for (p = strtok(infoarg, ",\t "); p != NULL;
+		    p = strtok(0, ",\t "))
+			if (*p != '\0')
+				infop = setinfo(type, p);
+
+	/* Open the DB. */
+	if (fname == NULL) {
+		p = getenv("TMPDIR");
+		if (p == NULL)
+			p = "/var/tmp";
+		(void)sprintf(buf, "%s/__dbtest", p);
+		fname = buf;
+		(void)unlink(buf);
+	}
+	if ((dbp = dbopen(fname,
+	    oflags, S_IRUSR | S_IWUSR, type, infop)) == NULL)
+		err("dbopen: %s", strerror(errno));
+	XXdbp = dbp;
+
+	state = COMMAND;
+	for (lineno = 1;
+	    (p = fgets(buf, sizeof(buf), stdin)) != NULL; ++lineno) {
+		len = strlen(buf);
+		switch(*p) {
+		case 'c':			/* compare */
+			if (state != COMMAND)
+				err("line %lu: not expecting command", lineno);
+			state = KEY;
+			command = COMPARE;
+			break;
+		case 'e':			/* echo */
+			if (state != COMMAND)
+				err("line %lu: not expecting command", lineno);
+			/* Don't display the newline, if CR at EOL. */
+			if (p[len - 2] == '\r')
+				--len;
+			if (write(ofd, p + 1, len - 1) != len - 1)
+				err("write: %s", strerror(errno));
+			break;
+		case 'g':			/* get */
+			if (state != COMMAND)
+				err("line %lu: not expecting command", lineno);
+			state = KEY;
+			command = GET;
+			break;
+		case 'p':			/* put */
+			if (state != COMMAND)
+				err("line %lu: not expecting command", lineno);
+			state = KEY;
+			command = PUT;
+			break;
+		case 'r':			/* remove */
+			if (state != COMMAND)
+				err("line %lu: not expecting command", lineno);
+			state = KEY;
+			command = REMOVE;
+			break;
+		case 's':			/* seq */
+			if (state != COMMAND)
+				err("line %lu: not expecting command", lineno);
+			if (flags == R_CURSOR) {
+				state = KEY;
+				command = SEQ;
+			} else
+				seq(dbp, &key);
+			break;
+		case 'f':
+			flags = setflags(p + 1);
+			break;
+		case 'D':			/* data file */
+			if (state != DATA)
+				err("line %lu: not expecting data", lineno);
+			data.data = rfile(p + 1, &data.size);
+			goto ldata;
+		case 'd':			/* data */
+			if (state != DATA)
+				err("line %lu: not expecting data", lineno);
+			data.data = xmalloc(p + 1, len - 1);
+			data.size = len - 1;
+ldata:			switch(command) {
+			case COMPARE:
+				compare(&keydata, &data);
+				break;
+			case PUT:
+				put(dbp, &key, &data);
+				break;
+			default:
+				err("line %lu: command doesn't take data",
+				    lineno);
+			}
+			if (type != DB_RECNO)
+				free(key.data);
+			free(data.data);
+			state = COMMAND;
+			break;
+		case 'K':			/* key file */
+			if (state != KEY)
+				err("line %lu: not expecting a key", lineno);
+			if (type == DB_RECNO)
+				err("line %lu: 'K' not available for recno",
+				    lineno);
+			key.data = rfile(p + 1, &key.size);
+			goto lkey;
+		case 'k':			/* key */
+			if (state != KEY)
+				err("line %lu: not expecting a key", lineno);
+			if (type == DB_RECNO) {
+				static recno_t recno;
+				recno = atoi(p + 1);
+				key.data = &recno;
+				key.size = sizeof(recno);
+			} else {
+				key.data = xmalloc(p + 1, len - 1);
+				key.size = len - 1;
+			}
+lkey:			switch(command) {
+			case COMPARE:
+				getdata(dbp, &key, &keydata);
+				state = DATA;
+				break;
+			case GET:
+				get(dbp, &key);
+				if (type != DB_RECNO)
+					free(key.data);
+				state = COMMAND;
+				break;
+			case PUT:
+				state = DATA;
+				break;
+			case REMOVE:
+				rem(dbp, &key);
+				if (type != DB_RECNO)
+					free(key.data);
+				state = COMMAND;
+				break;
+			case SEQ:
+				seq(dbp, &key);
+				if (type != DB_RECNO)
+					free(key.data);
+				state = COMMAND;
+				break;
+			default:
+				err("line %lu: command doesn't take a key",
+				    lineno);
+			}
+			break;
+		case 'o':
+			dump(dbp, p[1] == 'r');
+			break;
+		default:
+			err("line %lu: %s: unknown command character",
+			    p, lineno);
+		}
+	}
+#ifdef STATISTICS
+	if (type == DB_BTREE)
+		__bt_stat(dbp);
+#endif
+	if (dbp->close(dbp))
+		err("db->close: %s", strerror(errno));
+	(void)close(ofd);
+	exit(0);
+}
+
+#define	NOOVERWRITE	"put failed, would overwrite key\n"
+#define	NOSUCHKEY	"get failed, no such key\n"
+
+void
+compare(db1, db2)
+	DBT *db1, *db2;
+{
+	register size_t len;
+	register u_char *p1, *p2;
+
+	if (db1->size != db2->size)
+		printf("compare failed: key->data len %lu != data len %lu\n",
+		    db1->size, db2->size);
+
+	len = MIN(db1->size, db2->size);
+	for (p1 = db1->data, p2 = db2->data; len--;)
+		if (*p1++ != *p2++) {
+			printf("compare failed at offset %d\n",
+			    p1 - (u_char *)db1->data);
+			break;
+		}
+}
+
+void
+get(dbp, kp)
+	DB *dbp;
+	DBT *kp;
+{
+	DBT data;
+
+	switch(dbp->get(dbp, kp, &data, flags)) {
+	case 0:
+		(void)write(ofd, data.data, data.size);
+		break;
+	case -1:
+		err("line %lu: get: %s", lineno, strerror(errno));
+		/* NOTREACHED */
+	case 1:
+		(void)write(ofd, NOSUCHKEY, sizeof(NOSUCHKEY) - 1);
+		(void)fprintf(stderr, "%d: %.*s: %s\n",
+		    lineno, kp->size, kp->data, NOSUCHKEY);
+		break;
+	}
+}
+
+void
+getdata(dbp, kp, dp)
+	DB *dbp;
+	DBT *kp, *dp;
+{
+	switch(dbp->get(dbp, kp, dp, flags)) {
+	case 0:
+		return;
+	case -1:
+		err("line %lu: getdata: %s", lineno, strerror(errno));
+		/* NOTREACHED */
+	case 1:
+		err("line %lu: get failed, no such key", lineno);
+		/* NOTREACHED */
+	}
+}
+
+void
+put(dbp, kp, dp)
+	DB *dbp;
+	DBT *kp, *dp;
+{
+	switch(dbp->put(dbp, kp, dp, flags)) {
+	case 0:
+		break;
+	case -1:
+		err("line %lu: put: %s", lineno, strerror(errno));
+		/* NOTREACHED */
+	case 1:
+		(void)write(ofd, NOOVERWRITE, sizeof(NOOVERWRITE) - 1);
+		break;
+	}
+}
+
+void
+rem(dbp, kp)
+	DB *dbp;
+	DBT *kp;
+{
+	switch(dbp->del(dbp, kp, flags)) {
+	case 0:
+		break;
+	case -1:
+		err("line %lu: get: %s", lineno, strerror(errno));
+		/* NOTREACHED */
+	case 1:
+		(void)write(ofd, NOSUCHKEY, sizeof(NOSUCHKEY) - 1);
+		break;
+	}
+}
+
+void
+seq(dbp, kp)
+	DB *dbp;
+	DBT *kp;
+{
+	DBT data;
+
+	switch(dbp->seq(dbp, kp, &data, flags)) {
+	case 0:
+		(void)write(ofd, data.data, data.size);
+		break;
+	case -1:
+		err("line %lu: seq: %s", lineno, strerror(errno));
+		/* NOTREACHED */
+	case 1:
+		(void)write(ofd, NOSUCHKEY, sizeof(NOSUCHKEY) - 1);
+		break;
+	}
+}
+
+void
+dump(dbp, rev)
+	DB *dbp;
+	int rev;
+{
+	DBT key, data;
+	int flags, nflags;
+
+	if (rev) {
+		flags = R_LAST;
+		nflags = R_PREV;
+	} else {
+		flags = R_FIRST;
+		nflags = R_NEXT;
+	}
+	for (;; flags = nflags)
+		switch(dbp->seq(dbp, &key, &data, flags)) {
+		case 0:
+			(void)write(ofd, data.data, data.size);
+			break;
+		case 1:
+			goto done;
+		case -1:
+			err("line %lu: (dump) seq: %s",
+			    lineno, strerror(errno));
+			/* NOTREACHED */
+		}
+done:	return;
+}
+
+u_int
+setflags(s)
+	char *s;
+{
+	char *p, *index();
+
+	for (; isspace(*s); ++s);
+	if (*s == '\n')
+		return (0);
+	if ((p = index(s, '\n')) != NULL)
+		*p = '\0';
+	if (!strcmp(s, "R_CURSOR"))
+		return (R_CURSOR);
+	if (!strcmp(s, "R_FIRST"))
+		return (R_FIRST);
+	if (!strcmp(s, "R_IAFTER"))
+		return (R_IAFTER);
+	if (!strcmp(s, "R_IBEFORE"))
+		return (R_IBEFORE);
+	if (!strcmp(s, "R_LAST"))
+		return (R_LAST);
+	if (!strcmp(s, "R_NEXT"))
+		return (R_NEXT);
+	if (!strcmp(s, "R_NOOVERWRITE"))
+		return (R_NOOVERWRITE);
+	if (!strcmp(s, "R_PREV"))
+		return (R_PREV);
+	if (!strcmp(s, "R_SETCURSOR"))
+		return (R_SETCURSOR);
+	err("line %lu: %s: unknown flag", lineno, s);
+	/* NOTREACHED */
+}
+
+DBTYPE
+dbtype(s)
+	char *s;
+{
+	if (!strcmp(s, "btree"))
+		return (DB_BTREE);
+	if (!strcmp(s, "hash"))
+		return (DB_HASH);
+	if (!strcmp(s, "recno"))
+		return (DB_RECNO);
+	err("%s: unknown type (use btree, hash or recno)", s);
+	/* NOTREACHED */
+}
+
+void *
+setinfo(type, s)
+	DBTYPE type;
+	char *s;
+{
+	static BTREEINFO ib;
+	static HASHINFO ih;
+	static RECNOINFO rh;
+	char *eq, *index();
+
+	if ((eq = index(s, '=')) == NULL)
+		err("%s: illegal structure set statement", s);
+	*eq++ = '\0';
+	if (!isdigit(*eq))
+		err("%s: structure set statement must be a number", s);
+
+	switch(type) {
+	case DB_BTREE:
+		if (!strcmp("flags", s)) {
+			ib.flags = atoi(eq);
+			return (&ib);
+		}
+		if (!strcmp("cachesize", s)) {
+			ib.cachesize = atoi(eq);
+			return (&ib);
+		}
+		if (!strcmp("maxkeypage", s)) {
+			ib.maxkeypage = atoi(eq);
+			return (&ib);
+		}
+		if (!strcmp("minkeypage", s)) {
+			ib.minkeypage = atoi(eq);
+			return (&ib);
+		}
+		if (!strcmp("lorder", s)) {
+			ib.lorder = atoi(eq);
+			return (&ib);
+		}
+		if (!strcmp("psize", s)) {
+			ib.psize = atoi(eq);
+			return (&ib);
+		}
+		break;
+	case DB_HASH:
+		if (!strcmp("bsize", s)) {
+			ih.bsize = atoi(eq);
+			return (&ih);
+		}
+		if (!strcmp("ffactor", s)) {
+			ih.ffactor = atoi(eq);
+			return (&ih);
+		}
+		if (!strcmp("nelem", s)) {
+			ih.nelem = atoi(eq);
+			return (&ih);
+		}
+		if (!strcmp("cachesize", s)) {
+			ih.cachesize = atoi(eq);
+			return (&ih);
+		}
+		if (!strcmp("lorder", s)) {
+			ih.lorder = atoi(eq);
+			return (&ih);
+		}
+		break;
+	case DB_RECNO:
+		if (!strcmp("flags", s)) {
+			rh.flags = atoi(eq);
+			return (&rh);
+		}
+		if (!strcmp("cachesize", s)) {
+			rh.cachesize = atoi(eq);
+			return (&rh);
+		}
+		if (!strcmp("lorder", s)) {
+			rh.lorder = atoi(eq);
+			return (&rh);
+		}
+		if (!strcmp("reclen", s)) {
+			rh.reclen = atoi(eq);
+			return (&rh);
+		}
+		if (!strcmp("bval", s)) {
+			rh.bval = atoi(eq);
+			return (&rh);
+		}
+		if (!strcmp("psize", s)) {
+			rh.psize = atoi(eq);
+			return (&rh);
+		}
+		break;
+	}
+	err("%s: unknown structure value", s);
+	/* NOTREACHED */
+}
+
+void *
+rfile(name, lenp)
+	char *name;
+	size_t *lenp;
+{
+	struct stat sb;
+	void *p;
+	int fd;
+	char *np, *index();
+
+	for (; isspace(*name); ++name);
+	if ((np = index(name, '\n')) != NULL)
+		*np = '\0';
+	if ((fd = open(name, O_RDONLY, 0)) < 0 ||
+	    fstat(fd, &sb))
+		err("%s: %s\n", name, strerror(errno));
+#ifdef NOT_PORTABLE
+	if (sb.st_size > (off_t)SIZE_T_MAX)
+		err("%s: %s\n", name, strerror(E2BIG));
+#endif
+	if ((p = (void *)malloc((u_int)sb.st_size)) == NULL)
+		err("%s", strerror(errno));
+	(void)read(fd, p, (int)sb.st_size);
+	*lenp = sb.st_size;
+	(void)close(fd);
+	return (p);
+}
+
+void *
+xmalloc(text, len)
+	char *text;
+	size_t len;
+{
+	void *p;
+
+	if ((p = (void *)malloc(len)) == NULL)
+		err("%s", strerror(errno));
+	memmove(p, text, len);
+	return (p);
+}
+
+void
+usage()
+{
+	(void)fprintf(stderr,
+	    "usage: dbtest [-l] [-f file] [-i info] [-o file] type script\n");
+	exit(1);
+}
+
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+void
+#if __STDC__
+err(const char *fmt, ...)
+#else
+err(fmt, va_alist)
+	char *fmt;
+        va_dcl
+#endif
+{
+	va_list ap;
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	(void)fprintf(stderr, "dbtest: ");
+	(void)vfprintf(stderr, fmt, ap);
+	va_end(ap);
+	(void)fprintf(stderr, "\n");
+	exit(1);
+	/* NOTREACHED */
+}
diff --git a/lib/libc/db/test/hash.tests/driver2.c b/lib/libc/db/test/hash.tests/driver2.c
new file mode 100644
index 0000000..896820c
--- /dev/null
+++ b/lib/libc/db/test/hash.tests/driver2.c
@@ -0,0 +1,114 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)driver2.c	8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+/*
+ * Test driver, to try to tackle the large ugly-split problem.
+ */
+
+#include <sys/file.h>
+#include <stdio.h>
+#include "ndbm.h"
+
+int my_hash(key, len)
+	char	*key;
+	int	len;
+{
+	return(17);		/* So I'm cruel... */
+}
+
+main(argc, argv)
+	int	argc;
+{
+	DB	*db;
+	DBT	key, content;
+	char	keybuf[2049];
+	char	contentbuf[2049];
+	char	buf[256];
+	int	i;
+	HASHINFO	info;
+
+	info.bsize = 1024;
+	info.ffactor = 5;
+	info.nelem = 1;
+	info.cachesize = NULL;
+#ifdef HASH_ID_PROGRAM_SPECIFIED
+	info.hash_id = HASH_ID_PROGRAM_SPECIFIED;
+	info.hash_func = my_hash;
+#else
+	info.hash = my_hash;
+#endif
+	info.lorder = 0;
+	if (!(db = dbopen("bigtest", O_RDWR | O_CREAT, 0644, DB_HASH, &info))) {
+		sprintf(buf, "dbopen: failed on file bigtest");
+		perror(buf);
+		exit(1);
+	}
+	srandom(17);
+	key.data = keybuf;
+	content.data = contentbuf;
+	bzero(keybuf, sizeof(keybuf));
+	bzero(contentbuf, sizeof(contentbuf));
+	for (i=1; i <= 500; i++) {
+		key.size = 128 + (random()&1023);
+		content.size = 128 + (random()&1023);
+/*		printf("%d: Key size %d, data size %d\n", i, key.size,
+		       content.size); */
+		sprintf(keybuf, "Key #%d", i);
+		sprintf(contentbuf, "Contents #%d", i);
+		if ((db->put)(db, &key, &content, R_NOOVERWRITE)) {
+			sprintf(buf, "dbm_store #%d", i);
+			perror(buf);
+		}
+	}
+	if ((db->close)(db)) {
+		perror("closing hash file");
+		exit(1);
+	}
+	exit(0);
+}
+
+
+
diff --git a/lib/libc/db/test/hash.tests/makedb.sh b/lib/libc/db/test/hash.tests/makedb.sh
new file mode 100644
index 0000000..f28e281
--- /dev/null
+++ b/lib/libc/db/test/hash.tests/makedb.sh
@@ -0,0 +1,13 @@
+#!/bin/sh
+#
+#	@(#)makedb.sh	8.1 (Berkeley) 6/4/93
+
+awk '{i++; print $0; print i;}' /usr/share/dict/words > WORDS
+ls /bin /usr/bin /usr/ucb /etc | egrep '^(...|....|.....|......)$' | \
+sort | uniq | \
+awk '{
+	printf "%s\n", $0
+	for (i = 0; i < 1000; i++)
+		printf "%s+", $0
+	printf "\n"
+}' > LONG.DATA
diff --git a/lib/libc/db/test/hash.tests/tcreat3.c b/lib/libc/db/test/hash.tests/tcreat3.c
new file mode 100644
index 0000000..31211c5
--- /dev/null
+++ b/lib/libc/db/test/hash.tests/tcreat3.c
@@ -0,0 +1,105 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)tcreat3.c	8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <stdio.h>
+#include <db.h>
+
+#define INITIAL	25000
+#define MAXWORDS    25000	       /* # of elements in search table */
+
+char	wp1[8192];
+char	wp2[8192];
+main(argc, argv)
+char **argv;
+{
+	DBT item, key;
+	DB	*dbp;
+	HASHINFO ctl;
+	FILE *fp;
+	int	trash;
+
+	int i = 0;
+
+	argv++;
+	ctl.hash = NULL;
+	ctl.bsize = atoi(*argv++);
+	ctl.ffactor = atoi(*argv++);
+	ctl.nelem = atoi(*argv++);
+	ctl.lorder = 0;
+	if (!(dbp = dbopen( "hashtest",
+	    O_CREAT|O_TRUNC|O_RDWR, 0600, DB_HASH, &ctl))){
+		/* create table */
+		fprintf(stderr, "cannot create: hash table (size %d)\n",
+			INITIAL);
+		exit(1);
+	}
+
+	key.data = wp1;
+	item.data = wp2;
+	while ( fgets(wp1, 8192, stdin) &&
+		fgets(wp2, 8192, stdin) &&
+		i++ < MAXWORDS) {
+/*
+* put info in structure, and structure in the item
+*/
+		key.size = strlen(wp1);
+		item.size = strlen(wp2);
+
+/*
+ * enter key/data pair into the table
+ */
+		if ((dbp->put)(dbp, &key, &item, R_NOOVERWRITE) != NULL) {
+			fprintf(stderr, "cannot enter: key %s\n",
+				item.data);
+			exit(1);
+		}
+	}
+
+	(dbp->close)(dbp);
+	exit(0);
+}
diff --git a/lib/libc/db/test/hash.tests/tdel.c b/lib/libc/db/test/hash.tests/tdel.c
new file mode 100644
index 0000000..fb99431
--- /dev/null
+++ b/lib/libc/db/test/hash.tests/tdel.c
@@ -0,0 +1,122 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)tdel.c	8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <db.h>
+#include <stdio.h>
+
+#define INITIAL	25000
+#define MAXWORDS    25000	       /* # of elements in search table */
+
+/* Usage: thash pagesize fillfactor file */
+char	wp1[8192];
+char	wp2[8192];
+main(argc, argv)
+char **argv;
+{
+	DBT item, key;
+	DB	*dbp;
+	HASHINFO ctl;
+	FILE *fp;
+	int	stat;
+
+	int i = 0;
+
+	argv++;
+	ctl.nelem = INITIAL;
+	ctl.hash = NULL;
+	ctl.bsize = atoi(*argv++);
+	ctl.ffactor = atoi(*argv++);
+	ctl.cachesize = 1024 * 1024;	/* 1 MEG */
+	ctl.lorder = 0;
+	argc -= 2;
+	if (!(dbp = dbopen( NULL, O_CREAT|O_RDWR, 0400, DB_HASH, &ctl))) {
+		/* create table */
+		fprintf(stderr, "cannot create: hash table size %d)\n",
+			INITIAL);
+		exit(1);
+	}
+
+	key.data = wp1;
+	item.data = wp2;
+	while ( fgets(wp1, 8192, stdin) &&
+		fgets(wp2, 8192, stdin) &&
+		i++ < MAXWORDS) {
+/*
+* put info in structure, and structure in the item
+*/
+		key.size = strlen(wp1);
+		item.size = strlen(wp2);
+
+/*
+ * enter key/data pair into the table
+ */
+		if ((dbp->put)(dbp, &key, &item, R_NOOVERWRITE) != NULL) {
+			fprintf(stderr, "cannot enter: key %s\n",
+				item.data);
+			exit(1);
+		}
+	}
+
+	if ( --argc ) {
+		fp = fopen ( argv[0], "r");
+		i = 0;
+		while ( fgets(wp1, 8192, fp) &&
+			fgets(wp2, 8192, fp) &&
+			i++ < MAXWORDS) {
+		    key.size = strlen(wp1);
+		    stat = (dbp->del)(dbp, &key, 0);
+		    if (stat) {
+			fprintf ( stderr, "Error retrieving %s\n", key.data );
+			exit(1);
+		    }
+		}
+		fclose(fp);
+	}
+	(dbp->close)(dbp);
+	exit(0);
+}
diff --git a/lib/libc/db/test/hash.tests/testit b/lib/libc/db/test/hash.tests/testit
new file mode 100644
index 0000000..039457a
--- /dev/null
+++ b/lib/libc/db/test/hash.tests/testit
@@ -0,0 +1,147 @@
+#!/bin/csh -f
+#
+#	@(#)testit	8.1 (Berkeley) 6/4/93
+#
+
+echo ""
+echo "PAGE FILL "
+set name=WORDS
+	set i = 256
+	foreach j ( 11 14 21 )
+	    thash4 $i $j 25000 65536 $name < $name
+	end
+	set i = 512
+	foreach j ( 21 28 43 )
+	    thash4 $i $j 25000 65536  $name < $name
+	end
+	set i = 1024
+	foreach j ( 43 57 85 )
+	    thash4 $i $j 25000 65536 $name < $name
+	end
+	set i = 2048
+	foreach j ( 85 114 171 )
+	    thash4 $i $j 25000 65536 $name < $name
+	end
+	set i = 4096
+	foreach j ( 171 228 341 )
+	    thash4 $i $j 25000 65536 $name < $name
+	end
+	set i = 8192
+	foreach j ( 341 455 683 )
+	    thash4 $i $j 25000 65536 $name < $name
+	end
+	echo "PAGE FILL "
+	set i = 256
+	foreach j ( 11 14 21 )
+	    echo "$i"_"$j"
+	    tcreat3 $i $j 25000 $name < $name
+	    tread2 65536 < $name
+	    tverify $name < $name
+	    tseq > /dev/null
+	    tdel $i $j  $name < $name
+	end
+	set i = 512
+	foreach j ( 21 28 43 )
+	    echo "$i"_"$j"
+	    tcreat3 $i $j 25000 $name < $name
+	    tread2 65536 < $name
+	    tverify $name < $name
+	    tseq > /dev/null
+	    tdel $i $j  $name < $name
+	end
+	set i = 1024
+	foreach j ( 43 57 85 )
+	    echo "$i"_"$j"
+	    tcreat3 $i $j 25000 $name < $name
+	    tread2 65536 < $name
+	    tverify $name < $name
+	    tseq > /dev/null
+	    tdel $i $j  $name < $name
+	end
+	set i = 2048
+	foreach j ( 85 114 171 )
+	    echo "$i"_"$j"
+	    tcreat3 $i $j 25000 $name < $name
+	    tread2 65536 < $name
+	    tverify $name < $name
+	    tseq > /dev/null
+	    tdel $i $j  $name < $name
+	end
+	set i = 4096
+	foreach j ( 171 228 341 )
+	    echo "$i"_"$j"
+	    tcreat3 $i $j 25000 $name < $name
+	    tread2 65536 < $name
+	    tverify $name < $name
+	    tseq > /dev/null
+	    tdel $i $j  $name < $name
+	end
+	set i = 8192
+	foreach j ( 341 455 683 )
+	    echo "$i"_"$j"
+	    tcreat3 $i $j 25000 $name < $name
+	    tread2 65536 < $name
+	    tverify $name < $name
+	    tseq > /dev/null
+	    tdel $i $j  $name < $name
+	end
+set name=LONG.DATA
+	set i = 1024
+	foreach j ( 1 2 4 )
+	    echo thash4 $i $j 600 65536 $name 
+	    thash4 $i $j 600 65536 $name < $name
+	end
+
+	set i = 2048
+	foreach j ( 1 2 4 )
+	    echo thash4 $i $j 600 65536 $name 
+	    thash4 $i $j 600 65536 $name < $name
+	end
+	set i = 4096
+	foreach j ( 1 2 4 )
+	    echo thash4 $i $j 600 65536 $name 
+	    thash4 $i $j 600 65536 $name < $name
+	end
+	set i = 8192
+	foreach j ( 2 4 8 )
+	    echo thash4 $i $j 600 65536 $name 
+	    thash4 $i $j 600 65536 $name < $name
+	end
+	echo "PAGE FILL "
+	set i = 1024
+	foreach j ( 1 2 4 )
+	    echo "$i"_"$j"
+	    tcreat3 $i $j 600 $name < $name
+	    tread2 65536 < $name
+	    tverify $name < $name
+	    tseq > /dev/null
+	    tdel $i $j  $name < $name
+	end
+	set i = 2048
+	foreach j ( 1 2 4 )
+	    echo "$i"_"$j"
+	    tcreat3 $i $j 600 $name < $name
+	    tread2 65536 < $name
+	    tverify $name < $name
+	    tseq > /dev/null
+	    tdel $i $j  $name < $name
+	end
+	set i = 4096
+	foreach j ( 1 2 4 )
+	    echo "$i"_"$j"
+	    tcreat3 $i $j 600 $name < $name
+	    tread2 65536 < $name
+	    tverify $name < $name
+	    tseq > /dev/null
+	    tdel $i $j  $name < $name
+	end
+	set i = 8192
+	foreach j ( 2 4 8 )
+	    echo "$i"_"$j"
+	    tcreat3 $i $j 600 $name < $name
+	    tread2 65536 < $name
+	    tverify $name < $name
+	    tseq > /dev/null
+	    tdel $i $j  $name < $name
+	end
+driver2
diff --git a/lib/libc/db/test/hash.tests/thash4.c b/lib/libc/db/test/hash.tests/thash4.c
new file mode 100644
index 0000000..952dccb
--- /dev/null
+++ b/lib/libc/db/test/hash.tests/thash4.c
@@ -0,0 +1,132 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)thash4.c	8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/timeb.h>
+#include <stdio.h>
+#include <errno.h>
+#include <db.h>
+
+#define INITIAL	25000
+#define MAXWORDS    25000	       /* # of elements in search table */
+
+/* Usage: thash pagesize fillfactor file */
+char	wp1[8192];
+char	wp2[8192];
+main(argc, argv)
+char **argv;
+{
+	DBT item, key, res;
+	DB *dbp;
+	HASHINFO ctl;
+	FILE *fp;
+	int	stat;
+	time_t	t;
+
+	int i = 0;
+
+	argv++;
+	ctl.hash = NULL;
+	ctl.bsize = atoi(*argv++);
+	ctl.ffactor = atoi(*argv++);
+	ctl.nelem = atoi(*argv++);
+	ctl.cachesize = atoi(*argv++);
+	ctl.lorder = 0;
+	if (!(dbp = dbopen( NULL, O_CREAT|O_RDWR, 0400, DB_HASH, &ctl))) {
+		/* create table */
+		fprintf(stderr, "cannot create: hash table size %d)\n",
+			INITIAL);
+		fprintf(stderr, "\terrno: %d\n", errno);
+		exit(1);
+	}
+
+	key.data = wp1;
+	item.data = wp2;
+	while ( fgets(wp1, 8192, stdin) &&
+		fgets(wp2, 8192, stdin) &&
+		i++ < MAXWORDS) {
+/*
+* put info in structure, and structure in the item
+*/
+		key.size = strlen(wp1);
+		item.size = strlen(wp2);
+
+/*
+ * enter key/data pair into the table
+ */
+		if ((dbp->put)(dbp, &key, &item, R_NOOVERWRITE) != NULL) {
+			fprintf(stderr, "cannot enter: key %s\n",
+				item.data);
+			fprintf(stderr, "\terrno: %d\n", errno);
+			exit(1);
+		}
+	}
+
+	if ( --argc ) {
+		fp = fopen ( argv[0], "r");
+		i = 0;
+		while ( fgets(wp1, 256, fp) &&
+			fgets(wp2, 8192, fp) &&
+			i++ < MAXWORDS) {
+
+		    key.size = strlen(wp1);
+		    stat = (dbp->get)(dbp, &key, &res, 0);
+		    if (stat < 0 ) {
+			fprintf ( stderr, "Error retrieving %s\n", key.data );
+			fprintf(stderr, "\terrno: %d\n", errno);
+			exit(1);
+		    } else if ( stat > 0 ) {
+			fprintf ( stderr, "%s not found\n", key.data );
+			fprintf(stderr, "\terrno: %d\n", errno);
+			exit(1);
+		    }
+		}
+		fclose(fp);
+	}
+	dbp->close(dbp);
+	exit(0);
+}
diff --git a/lib/libc/db/test/hash.tests/tread2.c b/lib/libc/db/test/hash.tests/tread2.c
new file mode 100644
index 0000000..8f01556
--- /dev/null
+++ b/lib/libc/db/test/hash.tests/tread2.c
@@ -0,0 +1,105 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)tread2.c	8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <stdio.h>
+#include <db.h>
+
+#define INITIAL	25000
+#define MAXWORDS    25000	       /* # of elements in search table */
+
+typedef struct {		       /* info to be stored */
+	int num, siz;
+} info;
+
+char	wp1[8192];
+char	wp2[8192];
+main(argc, argv)
+char **argv;
+{
+	DBT item, key, res;
+	DB	*dbp;
+	HASHINFO ctl;
+	int	stat;
+
+	int i = 0;
+
+	ctl.nelem = INITIAL;
+	ctl.hash = NULL;
+	ctl.bsize = 64;
+	ctl.ffactor = 1;
+	ctl.cachesize = atoi(*argv++);
+	ctl.lorder = 0;
+	if (!(dbp = dbopen( "hashtest", O_RDONLY, 0400, DB_HASH, &ctl))) {
+		/* create table */
+		fprintf(stderr, "cannot open: hash table\n" );
+		exit(1);
+	}
+
+	key.data = wp1;
+	item.data = wp2;
+	while ( fgets(wp1, 8192, stdin) &&
+		fgets(wp2, 8192, stdin) &&
+		i++ < MAXWORDS) {
+/*
+* put info in structure, and structure in the item
+*/
+		key.size = strlen(wp1);
+		item.size = strlen(wp2);
+
+		stat = (dbp->get)(dbp, &key, &res,0);
+		if (stat < 0) {
+		    fprintf ( stderr, "Error retrieving %s\n", key.data );
+		    exit(1);
+		} else if ( stat > 0 ) {
+		    fprintf ( stderr, "%s not found\n", key.data );
+		    exit(1);
+		}
+	}
+	(dbp->close)(dbp);
+	exit(0);
+}
diff --git a/lib/libc/db/test/hash.tests/tseq.c b/lib/libc/db/test/hash.tests/tseq.c
new file mode 100644
index 0000000..f41c172
--- /dev/null
+++ b/lib/libc/db/test/hash.tests/tseq.c
@@ -0,0 +1,88 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)tseq.c	8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <stdio.h>
+#include <db.h>
+
+#define INITIAL	25000
+#define MAXWORDS    25000	       /* # of elements in search table */
+
+
+char	wp[8192];
+char	cp[8192];
+main(argc, argv)
+char **argv;
+{
+	DBT item, key, res;
+	DB	*dbp;
+	FILE *fp;
+	int	stat;
+
+	if (!(dbp = dbopen( "hashtest", O_RDONLY, 0400, DB_HASH, NULL))) {
+		/* create table */
+		fprintf(stderr, "cannot open: hash table\n" );
+		exit(1);
+	}
+
+/*
+* put info in structure, and structure in the item
+*/
+	for ( stat = (dbp->seq) (dbp, &res, &item, 1 );
+	      stat == 0;
+	      stat = (dbp->seq) (dbp, &res, &item, 0 ) ) {
+
+	      bcopy ( res.data, wp, res.size );
+	      wp[res.size] = 0;
+	      bcopy ( item.data, cp, item.size );
+	      cp[item.size] = 0;
+
+	      printf ( "%s %s\n", wp, cp );
+	}
+	(dbp->close)(dbp);
+	exit(0);
+}
diff --git a/lib/libc/db/test/hash.tests/tverify.c b/lib/libc/db/test/hash.tests/tverify.c
new file mode 100644
index 0000000..ac5d2f9
--- /dev/null
+++ b/lib/libc/db/test/hash.tests/tverify.c
@@ -0,0 +1,107 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)tverify.c	8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <stdio.h>
+#include <db.h>
+
+#define INITIAL	25000
+#define MAXWORDS    25000	       /* # of elements in search table */
+
+typedef struct {		       /* info to be stored */
+	int num, siz;
+} info;
+
+char	wp1[8192];
+char	wp2[8192];
+main(argc, argv)
+char **argv;
+{
+	DBT key, res;
+	DB	*dbp;
+	HASHINFO ctl;
+	int	trash;
+	int	stat;
+
+	int i = 0;
+
+	ctl.nelem = INITIAL;
+	ctl.hash = NULL;
+	ctl.bsize = 64;
+	ctl.ffactor = 1;
+	ctl.cachesize = 1024 * 1024;	/* 1 MEG */
+	ctl.lorder = 0;
+	if (!(dbp = dbopen( "hashtest", O_RDONLY, 0400, DB_HASH, &ctl))) {
+		/* create table */
+		fprintf(stderr, "cannot open: hash table\n" );
+		exit(1);
+	}
+
+	key.data = wp1;
+	while ( fgets(wp1, 8192, stdin) &&
+		fgets(wp2, 8192, stdin) &&
+		i++ < MAXWORDS) {
+/*
+* put info in structure, and structure in the item
+*/
+		key.size = strlen(wp1);
+
+		stat = (dbp->get)(dbp, &key, &res,0);
+		if (stat < 0) {
+		    fprintf ( stderr, "Error retrieving %s\n", key.data );
+		    exit(1);
+		} else if ( stat > 0 ) {
+		    fprintf ( stderr, "%s not found\n", key.data );
+		    exit(1);
+		}
+		if ( memcmp ( res.data, wp2, res.size ) ) {
+		    fprintf ( stderr, "data for %s is incorrect.  Data was %s.  Should have been %s\n", key.data, res.data, wp2 );
+		}
+	}
+	(dbp->close)(dbp);
+	exit(0);
+}
diff --git a/lib/libc/db/test/run.test b/lib/libc/db/test/run.test
new file mode 100644
index 0000000..5eeaf74
--- /dev/null
+++ b/lib/libc/db/test/run.test
@@ -0,0 +1,699 @@
+#!/bin/sh -
+#
+#	@(#)run.test	8.7 (Berkeley) 9/16/93
+#
+
+# db regression tests
+main()
+{
+
+DICT=/usr/share/dict/words
+#DICT=/usr/dict/words
+PROG=./dbtest
+TMP1=t1
+TMP2=t2
+TMP3=t3
+
+	if [ $# -eq 0 ]; then
+		for t in 1 2 3 4 5 6 7 8 9 10 11 12 13 20; do
+			test$t
+		done
+	else
+		while [ $# -gt 0 ]
+			do case "$1" in
+			test*)
+				$1;;
+			[0-9]*)
+				test$1;;
+			btree)
+				for t in 1 2 3 7 8 9 10 12 13; do
+					test$t
+				done;;
+			hash)
+				for t in 1 2 3 8 13 20; do
+					test$t
+				done;;
+			recno)
+				for t in 1 2 3 4 5 6 7 10 11; do
+					test$t
+				done;;
+			*)
+				echo "run.test: unknown test $1"
+				echo "usage: run.test test# | type"
+				exit 1
+			esac
+			shift
+		done
+	fi
+	rm -f $TMP1 $TMP2 $TMP3
+	exit 0
+}
+
+# Take the first hundred entries in the dictionary, and make them
+# be key/data pairs.
+test1()
+{
+	echo "Test 1: btree, hash: small key, small data pairs"
+	sed 200q $DICT > $TMP1
+	for type in btree hash; do
+		rm -f $TMP2 $TMP3
+		for i in `sed 200q $DICT`; do
+			echo p
+			echo k$i
+			echo d$i
+			echo g
+			echo k$i
+		done > $TMP2
+		$PROG -o $TMP3 $type $TMP2
+		if (cmp -s $TMP1 $TMP3) ; then :
+		else
+			echo "test1: type $type: failed"
+			exit 1
+		fi
+	done
+	echo "Test 1: recno: small key, small data pairs"
+	rm -f $TMP2 $TMP3
+	sed 200q $DICT |
+	awk '{ 
+		++i;
+		printf("p\nk%d\nd%s\ng\nk%d\n", i, $0, i);
+	}' > $TMP2
+	$PROG -o $TMP3 recno $TMP2
+	if (cmp -s $TMP1 $TMP3) ; then :
+	else
+		echo "test1: type recno: failed"
+		exit 1
+	fi
+}
+
+# Take the first 200 entries in the dictionary, and give them
+# each a medium size data entry.
+test2()
+{
+	echo "Test 2: btree, hash: small key, medium data pairs"
+	mdata=abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz
+	echo $mdata |
+	awk '{ for (i = 1; i < 201; ++i) print $0 }' > $TMP1
+	for type in hash btree; do
+		rm -f $TMP2 $TMP3
+		for i in `sed 200q $DICT`; do
+			echo p
+			echo k$i
+			echo d$mdata
+			echo g
+			echo k$i
+		done > $TMP2
+		$PROG -o $TMP3 $type $TMP2
+		if (cmp -s $TMP1 $TMP3) ; then :
+		else
+			echo "test2: type $type: failed"
+			exit 1
+		fi
+	done
+	echo "Test 2: recno: small key, medium data pairs"
+	rm -f $TMP2 $TMP3
+	echo $mdata | 
+	awk '{  for (i = 1; i < 201; ++i)
+		printf("p\nk%d\nd%s\ng\nk%d\n", i, $0, i);
+	}' > $TMP2
+	$PROG -o $TMP3 recno $TMP2
+	if (cmp -s $TMP1 $TMP3) ; then :
+	else
+		echo "test2: type recno: failed"
+		exit 1
+	fi
+}
+
+# Insert the programs in /bin with their paths as their keys.
+test3()
+{
+	echo "Test 3: hash: small key, big data pairs"
+	rm -f $TMP1
+	(find /bin -type f -print | xargs cat) > $TMP1
+	for type in hash; do
+		rm -f $TMP2 $TMP3
+		for i in `find /bin -type f -print`; do
+			echo p
+			echo k$i
+			echo D$i
+			echo g
+			echo k$i
+		done > $TMP2
+		$PROG -o $TMP3 $type $TMP2
+		if (cmp -s $TMP1 $TMP3) ; then :
+		else
+			echo "test3: $type: failed"
+			exit 1
+		fi
+	done
+	echo "Test 3: btree: small key, big data pairs"
+	for psize in 512 16384 65536; do
+		echo "    page size $psize"
+		for type in btree; do
+			rm -f $TMP2 $TMP3
+			for i in `find /bin -type f -print`; do
+				echo p
+				echo k$i
+				echo D$i
+				echo g
+				echo k$i
+			done > $TMP2
+			$PROG -i psize=$psize -o $TMP3 $type $TMP2
+			if (cmp -s $TMP1 $TMP3) ; then :
+			else
+				echo "test3: $type: page size $psize: failed"
+				exit 1
+			fi
+		done
+	done
+	echo "Test 3: recno: big data pairs"
+	rm -f $TMP2 $TMP3
+	find /bin -type f -print | 
+	awk '{
+		++i;
+		printf("p\nk%d\nD%s\ng\nk%d\n", i, $0, i);
+	}' > $TMP2
+	for psize in 512 16384 65536; do
+		echo "    page size $psize"
+		$PROG -i psize=$psize -o $TMP3 recno $TMP2
+		if (cmp -s $TMP1 $TMP3) ; then :
+		else
+			echo "test3: recno: page size $psize: failed"
+			exit 1
+		fi
+	done
+}
+
+# Do random recno entries.
+test4()
+{
+	echo "Test 4: recno: random entries"
+	echo "abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg" |
+	awk '{
+		for (i = 37; i <= 37 + 88 * 17; i += 17) {
+			if (i % 41)
+				s = substr($0, 1, i % 41);
+			else
+				s = substr($0, 1);
+			printf("input key %d: %s\n", i, s);
+		}
+		for (i = 1; i <= 15; ++i) {
+			if (i % 41)
+				s = substr($0, 1, i % 41);
+			else
+				s = substr($0, 1);
+			printf("input key %d: %s\n", i, s);
+		}
+		for (i = 19234; i <= 19234 + 61 * 27; i += 27) {
+			if (i % 41)
+				s = substr($0, 1, i % 41);
+			else
+				s = substr($0, 1);
+			printf("input key %d: %s\n", i, s);
+		}
+		exit
+	}' > $TMP1
+	rm -f $TMP2 $TMP3
+	cat $TMP1 |
+	awk 'BEGIN {
+			i = 37;
+			incr = 17;
+		}
+		{
+			printf("p\nk%d\nd%s\n", i, $0);
+			if (i == 19234 + 61 * 27)
+				exit;
+			if (i == 37 + 88 * 17) {
+				i = 1;
+				incr = 1;
+			} else if (i == 15) {
+				i = 19234;
+				incr = 27;
+			} else
+				i += incr;
+		}
+		END {
+			for (i = 37; i <= 37 + 88 * 17; i += 17)
+				printf("g\nk%d\n", i);
+			for (i = 1; i <= 15; ++i)
+				printf("g\nk%d\n", i);
+			for (i = 19234; i <= 19234 + 61 * 27; i += 27)
+				printf("g\nk%d\n", i);
+		}' > $TMP2
+	$PROG -o $TMP3 recno $TMP2
+	if (cmp -s $TMP1 $TMP3) ; then :
+	else
+		echo "test4: type recno: failed"
+		exit 1
+	fi
+}
+
+# Do reverse order recno entries.
+test5()
+{
+	echo "Test 5: recno: reverse order entries"
+	echo "abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg" |
+	awk ' {
+		for (i = 1500; i; --i) {
+			if (i % 34)
+				s = substr($0, 1, i % 34);
+			else
+				s = substr($0, 1);
+			printf("input key %d: %s\n", i, s);
+		}
+		exit;
+	}' > $TMP1
+	rm -f $TMP2 $TMP3
+	cat $TMP1 |
+	awk 'BEGIN {
+			i = 1500;
+		}
+		{
+			printf("p\nk%d\nd%s\n", i, $0);
+			--i;
+		}
+		END {
+			for (i = 1500; i; --i) 
+				printf("g\nk%d\n", i);
+		}' > $TMP2
+	$PROG -o $TMP3 recno $TMP2
+	if (cmp -s $TMP1 $TMP3) ; then :
+	else
+		echo "test5: type recno: failed"
+		exit 1
+	fi
+}
+		
+# Do alternating order recno entries.
+test6()
+{
+	echo "Test 6: recno: alternating order entries"
+	echo "abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg" |
+	awk ' {
+		for (i = 1; i < 1200; i += 2) {
+			if (i % 34)
+				s = substr($0, 1, i % 34);
+			else
+				s = substr($0, 1);
+			printf("input key %d: %s\n", i, s);
+		}
+		for (i = 2; i < 1200; i += 2) {
+			if (i % 34)
+				s = substr($0, 1, i % 34);
+			else
+				s = substr($0, 1);
+			printf("input key %d: %s\n", i, s);
+		}
+		exit;
+	}' > $TMP1
+	rm -f $TMP2 $TMP3
+	cat $TMP1 |
+	awk 'BEGIN {
+			i = 1;
+			even = 0;
+		}
+		{
+			printf("p\nk%d\nd%s\n", i, $0);
+			i += 2;
+			if (i >= 1200) {
+				if (even == 1)
+					exit;
+				even = 1;
+				i = 2;
+			}
+		}
+		END {
+			for (i = 1; i < 1200; ++i) 
+				printf("g\nk%d\n", i);
+		}' > $TMP2
+	$PROG -o $TMP3 recno $TMP2
+	sort -o $TMP1 $TMP1
+	sort -o $TMP3 $TMP3
+	if (cmp -s $TMP1 $TMP3) ; then :
+	else
+		echo "test6: type recno: failed"
+		exit 1
+	fi
+}
+
+# Delete cursor record
+test7()
+{
+	echo "Test 7: btree, recno: delete cursor record"
+	echo "abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg" |
+	awk '{
+		for (i = 1; i <= 120; ++i)
+			printf("%05d: input key %d: %s\n", i, i, $0);
+		printf("%05d: input key %d: %s\n", 120, 120, $0);
+		printf("get failed, no such key\n");
+		printf("%05d: input key %d: %s\n", 1, 1, $0);
+		printf("%05d: input key %d: %s\n", 2, 2, $0);
+		exit;
+	}' > $TMP1
+	rm -f $TMP2 $TMP3
+
+	for type in btree recno; do
+		cat $TMP1 |
+		awk '{
+			if (i == 120)
+				exit;
+			printf("p\nk%d\nd%s\n", ++i, $0);
+		}
+		END {
+			printf("fR_NEXT\n");
+			for (i = 1; i <= 120; ++i)
+				printf("s\n");
+			printf("fR_CURSOR\ns\nk120\n");
+			printf("r\nk120\n");
+			printf("fR_NEXT\ns\n");
+			printf("fR_CURSOR\ns\nk1\n");
+			printf("r\nk1\n");
+			printf("fR_FIRST\ns\n");
+		}' > $TMP2
+		$PROG -o $TMP3 recno $TMP2
+		if (cmp -s $TMP1 $TMP3) ; then :
+		else
+			echo "test7: type $type: failed"
+			exit 1
+		fi
+	done
+}
+
+# Make sure that overflow pages are reused.
+test8()
+{
+	echo "Test 8: btree, hash: repeated small key, big data pairs"
+	rm -f $TMP1
+	echo "" | 
+	awk 'BEGIN {
+		for (i = 1; i <= 10; ++i) {
+			printf("p\nkkey1\nD/bin/sh\n");
+			printf("p\nkkey2\nD/bin/csh\n");
+			if (i % 8 == 0) {
+				printf("c\nkkey2\nD/bin/csh\n");
+				printf("c\nkkey1\nD/bin/sh\n");
+				printf("e\t%d of 10 (comparison)\r\n", i);
+			} else
+				printf("e\t%d of 10             \r\n", i);
+			printf("r\nkkey1\nr\nkkey2\n");
+		}
+		printf("e\n");
+		printf("eend of test8 run\n");
+	}' > $TMP1
+	$PROG btree $TMP1
+#	$PROG hash $TMP1
+	# No explicit test for success.
+}
+
+# Test btree duplicate keys
+test9()
+{
+	echo "Test 9: btree: duplicate keys"
+	echo "abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg" |
+	awk '{
+		for (i = 1; i <= 543; ++i)
+			printf("%05d: input key %d: %s\n", i, i, $0);
+		exit;
+	}' > $TMP1
+	rm -f $TMP2 $TMP3
+
+	for type in btree; do
+		cat $TMP1 | 
+		awk '{
+			if (i++ % 2)
+				printf("p\nkduplicatekey\nd%s\n", $0);
+			else
+				printf("p\nkunique%dkey\nd%s\n", i, $0);
+		}
+		END {
+				printf("o\n");
+		}' > $TMP2
+		$PROG -iflags=1 -o $TMP3 $type $TMP2
+		sort -o $TMP3 $TMP3
+		if (cmp -s $TMP1 $TMP3) ; then :
+		else
+			echo "test9: type $type: failed"
+			exit 1
+		fi
+	done
+}
+
+# Test use of cursor flags without initialization
+test10()
+{
+	echo "Test 10: btree, recno: test cursor flag use"
+	echo "abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg" |
+	awk '{
+		for (i = 1; i <= 20; ++i)
+			printf("%05d: input key %d: %s\n", i, i, $0);
+		exit;
+	}' > $TMP1
+	rm -f $TMP2 $TMP3
+
+	# Test that R_CURSOR doesn't succeed before cursor initialized
+	for type in btree recno; do
+		cat $TMP1 |
+		awk '{
+			if (i == 10)
+				exit;
+			printf("p\nk%d\nd%s\n", ++i, $0);
+		}
+		END {
+			printf("fR_CURSOR\nr\nk1\n");
+			printf("eR_CURSOR SHOULD HAVE FAILED\n");
+		}' > $TMP2
+		$PROG -o $TMP3 $type $TMP2 > /dev/null 2>&1
+		if [ -s $TMP3 ] ; then
+			echo "Test 10: delete: R_CURSOR SHOULD HAVE FAILED"
+			exit 1
+		fi
+	done
+	for type in btree recno; do
+		cat $TMP1 |
+		awk '{
+			if (i == 10)
+				exit;
+			printf("p\nk%d\nd%s\n", ++i, $0);
+		}
+		END {
+			printf("fR_CURSOR\np\nk1\ndsome data\n");
+			printf("eR_CURSOR SHOULD HAVE FAILED\n");
+		}' > $TMP2
+		$PROG -o $TMP3 $type $TMP2 > /dev/null 2>&1
+		if [ -s $TMP3 ] ; then
+			echo "Test 10: put: R_CURSOR SHOULD HAVE FAILED"
+			exit 1
+		fi
+	done
+}
+
+# Test insert in reverse order.
+test11()
+{
+	echo "Test 11: recno: reverse order insert"
+	echo "abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg" |
+	awk '{
+		for (i = 1; i <= 779; ++i)
+			printf("%05d: input key %d: %s\n", i, i, $0);
+		exit;
+	}' > $TMP1
+	rm -f $TMP2 $TMP3
+
+	for type in recno; do
+		cat $TMP1 |
+		awk '{
+			if (i == 0) {
+				i = 1;
+				printf("p\nk1\nd%s\n", $0);
+				printf("%s\n", "fR_IBEFORE");
+			} else
+				printf("p\nk1\nd%s\n", $0);
+		}
+		END {
+				printf("or\n");
+		}' > $TMP2
+		$PROG -o $TMP3 $type $TMP2
+		if (cmp -s $TMP1 $TMP3) ; then :
+		else
+			echo "test11: type $type: failed"
+			exit 1
+		fi
+	done
+}
+
+# Take the first 20000 entries in the dictionary, reverse them, and give
+# them each a small size data entry.  Use a small page size to make sure
+# the btree split code gets hammered.
+test12()
+{
+	echo "Test 12: btree: lots of keys, small page size"
+	mdata=abcdefghijklmnopqrstuvwxy
+	echo $mdata |
+	awk '{ for (i = 1; i < 20001; ++i) print $0 }' > $TMP1
+	for type in btree; do
+		rm -f $TMP2 $TMP3
+		for i in `sed 20000q $DICT | rev`; do
+			echo p
+			echo k$i
+			echo d$mdata
+			echo g
+			echo k$i
+		done > $TMP2
+		$PROG -i psize=512 -o $TMP3 $type $TMP2
+		if (cmp -s $TMP1 $TMP3) ; then :
+		else
+			echo "test12: type $type: failed"
+			exit 1
+		fi
+	done
+}
+
+# Test different byte orders.
+test13()
+{
+	echo "Test 13: btree, hash: differing byte orders"
+	sed 50q $DICT > $TMP1
+	for order in 1234 4321; do
+		for type in btree hash; do
+			rm -f byte.file $TMP2 $TMP3
+			for i in `sed 50q $DICT`; do
+				echo p
+				echo k$i
+				echo d$i
+				echo g
+				echo k$i
+			done > $TMP2
+			$PROG -ilorder=$order -f byte.file -o $TMP3 $type $TMP2
+			if (cmp -s $TMP1 $TMP3) ; then :
+			else
+				echo "test13: $type/$order put failed"
+				exit 1
+			fi
+			for i in `sed 50q $DICT`; do
+				echo g
+				echo k$i
+			done > $TMP2
+			$PROG -ilorder=$order -f byte.file -o $TMP3 $type $TMP2
+			if (cmp -s $TMP1 $TMP3) ; then :
+			else
+				echo "test13: $type/$order get failed"
+				exit 1
+			fi
+		done
+	done
+	rm -f byte.file
+}
+
+# Try a variety of bucketsizes and fill factors for hashing
+test20()
+{
+	echo\
+    "Test 20: hash: bucketsize, fill factor; nelem 25000 cachesize 65536"
+	echo "abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg" |
+	awk '{
+		for (i = 1; i <= 10000; ++i) {
+			if (i % 34)
+				s = substr($0, 1, i % 34);
+			else
+				s = substr($0, 1);
+			printf("%s\n", s);
+		}
+		exit;
+	}' > $TMP1
+	sed 10000q $DICT |
+	awk 'BEGIN {
+		ds="abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg"
+	}
+	{
+		if (++i % 34)
+			s = substr(ds, 1, i % 34);
+		else
+			s = substr(ds, 1);
+		printf("p\nk%s\nd%s\n", $0, s);
+	}' > $TMP2
+	sed 10000q $DICT |
+	awk '{
+		++i;
+		printf("g\nk%s\n", $0);
+	}' >> $TMP2
+	bsize=256
+	for ffactor in 11 14 21; do
+		echo "    bucketsize $bsize, fill factor $ffactor"
+		$PROG -o$TMP3 \
+		    -ibsize=$bsize,ffactor=$ffactor,nelem=25000,cachesize=65536\
+		    hash $TMP2
+		if (cmp -s $TMP1 $TMP3) ; then :
+		else
+			echo "test20: type hash:\
+bsize=$bsize ffactor=$ffactor nelem=25000 cachesize=65536 failed"
+			exit 1
+		fi
+	done
+	bsize=512
+	for ffactor in 21 28 43; do
+		echo "    bucketsize $bsize, fill factor $ffactor"
+		$PROG -o$TMP3 \
+		    -ibsize=$bsize,ffactor=$ffactor,nelem=25000,cachesize=65536\
+		    hash $TMP2
+		if (cmp -s $TMP1 $TMP3) ; then :
+		else
+			echo "test20: type hash:\
+bsize=$bsize ffactor=$ffactor nelem=25000 cachesize=65536 failed"
+			exit 1
+		fi
+	done
+	bsize=1024
+	for ffactor in 43 57 85; do
+		echo "    bucketsize $bsize, fill factor $ffactor"
+		$PROG -o$TMP3 \
+		    -ibsize=$bsize,ffactor=$ffactor,nelem=25000,cachesize=65536\
+		    hash $TMP2
+		if (cmp -s $TMP1 $TMP3) ; then :
+		else
+			echo "test20: type hash:\
+bsize=$bsize ffactor=$ffactor nelem=25000 cachesize=65536 failed"
+			exit 1
+		fi
+	done
+	bsize=2048
+	for ffactor in 85 114 171; do
+		echo "    bucketsize $bsize, fill factor $ffactor"
+		$PROG -o$TMP3 \
+		    -ibsize=$bsize,ffactor=$ffactor,nelem=25000,cachesize=65536\
+		    hash $TMP2
+		if (cmp -s $TMP1 $TMP3) ; then :
+		else
+			echo "test20: type hash:\
+bsize=$bsize ffactor=$ffactor nelem=25000 cachesize=65536 failed"
+			exit 1
+		fi
+	done
+	bsize=4096
+	for ffactor in 171 228 341; do
+		echo "    bucketsize $bsize, fill factor $ffactor"
+		$PROG -o$TMP3 \
+		    -ibsize=$bsize,ffactor=$ffactor,nelem=25000,cachesize=65536\
+		    hash $TMP2
+		if (cmp -s $TMP1 $TMP3) ; then :
+		else
+			echo "test20: type hash:\
+bsize=$bsize ffactor=$ffactor nelem=25000 cachesize=65536 failed"
+			exit 1
+		fi
+	done
+	bsize=8192
+	for ffactor in 341 455 683; do
+		echo "    bucketsize $bsize, fill factor $ffactor"
+		$PROG -o$TMP3 \
+		    -ibsize=$bsize,ffactor=$ffactor,nelem=25000,cachesize=65536\
+		    hash $TMP2
+		if (cmp -s $TMP1 $TMP3) ; then :
+		else
+			echo "test20: type hash:\
+bsize=$bsize ffactor=$ffactor nelem=25000 cachesize=65536 failed"
+			exit 1
+		fi
+	done
+}
+
+main $*
diff --git a/lib/libc/gen/Makefile.inc b/lib/libc/gen/Makefile.inc
new file mode 100644
index 0000000..69a434d
--- /dev/null
+++ b/lib/libc/gen/Makefile.inc
@@ -0,0 +1,114 @@
+#	From: @(#)Makefile.inc	8.3 (Berkeley) 4/16/94
+#	$Id: Makefile.inc,v 1.15 1994/12/18 14:06:38 guido Exp $
+
+# machine-independent gen sources
+.PATH: ${.CURDIR}/${MACHINE}/gen ${.CURDIR}/gen
+
+SRCS+=	alarm.c assert.c clock.c closedir.c config.c confstr.c crypt.c \
+	ctermid.c daemon.c devname.c disklabel.c err.c errlst.c \
+	exec.c fnmatch.c frexp.c fstab.c fts.c getbootfile.c getbsize.c \
+	getcap.c getcwd.c getdomainname.c getgrent.c getgrouplist.c \
+	gethostname.c getloadavg.c getlogin.c getmntinfo.c getnetgrent.c \
+	getosreldate.c getpagesize.c getpass.c getpwent.c getttyent.c \
+	getusershell.c getvfsent.c glob.c initgroups.c isatty.c msgctl.c \
+	msgget.c msgrcv.c msgsnd.c nice.c nlist.c ntp_gettime.c opendir.c \
+	pause.c popen.c psignal.c pwcache.c raise.c readdir.c rewinddir.c \
+	scandir.c seekdir.c semconfig.c semctl.c semget.c semop.c \
+	setdomainname.c sethostname.c setjmperr.c setmode.c shmat.c \
+	shmctl.c shmdt.c shmget.c siginterrupt.c siglist.c signal.c \
+	sigsetops.c sleep.c sysconf.c sysctl.c syslog.c \
+	telldir.c termios.c time.c times.c timezone.c ttyname.c ttyslot.c \
+	ualarm.c uname.c unvis.c usleep.c utime.c valloc.c vis.c wait.c \
+	wait3.c waitpid.c
+
+# *rand48 family, from 1.1.5
+SRCS+=	_rand48.c drand48.c erand48.c jrand48.c lcong48.c lrand48.c \
+	mrand48.c nrand48.c seed48.c srand48.c
+
+# machine-dependent gen sources
+.include "${.CURDIR}/${MACHINE}/gen/Makefile.inc"
+
+.if (${MACHINE} == "tahoe" || ${MACHINE} == "vax")
+errlst.o errlst.po:
+	${CC} -S ${CFLAGS} ${.IMPSRC}
+	ed - < ${.CURDIR}/${MACHINE}/:errfix errlst.s
+	${AS} -o ${.TARGET} errlst.s
+	rm -f errlst.s
+.endif
+
+MAN3+=	gen/alarm.3 gen/clock.3 gen/confstr.3 gen/config_open.3 \
+	gen/crypt.3 gen/ctermid.3 \
+	gen/daemon.3 gen/devname.3 gen/directory.3 gen/err.3 gen/exec.3 \
+	gen/fnmatch.3 gen/frexp.3 gen/fts.3 gen/getbsize.3 gen/getbootfile.3 \
+	gen/getcap.3 gen/getcwd.3 gen/getdiskbyname.3 gen/getdomainname.3 \
+	gen/getfsent.3 gen/getgrent.3 gen/getgrouplist.3 gen/gethostname.3 \
+	gen/getloadavg.3 \
+	gen/getmntinfo.3 gen/getnetgrent.3 gen/getpagesize.3 gen/getpass.3 \
+	gen/getpwent.3 gen/getttyent.3 gen/getvfsent.3 gen/getusershell.3 \
+	gen/glob.3 \
+	gen/initgroups.3 gen/isinf.3 gen/ldexp.3 gen/modf.3 gen/nice.3 \
+	gen/nlist.3 gen/pause.3 gen/popen.3 gen/psignal.3 gen/pwcache.3 \
+	gen/raise.3 gen/rand48.3 gen/scandir.3 gen/setjmp.3 gen/setmode.3 \
+	gen/siginterrupt.3 gen/signal.3 gen/sigsetops.3 gen/sleep.3 \
+	gen/sysconf.3 gen/sysctl.3 gen/syslog.3 gen/tcgetpgrp.3 \
+	gen/tcsendbreak.3 gen/tcsetattr.3 gen/tcsetpgrp.3 gen/time.3 \
+	gen/times.3 gen/timezone.3 gen/ttyname.3 gen/tzset.3 gen/ualarm.3 \
+	gen/uname.3 gen/unvis.3 gen/usleep.3 gen/utime.3 gen/valloc.3 gen/vis.3
+
+MLINKS+=config_open.3 config_next.3 config_open.3 config_close.3 \
+	config_open.3 config_skip.3
+MLINKS+=crypt.3 encrypt.3 crypt.3 setkey.3
+MLINKS+=directory.3 closedir.3 directory.3 dirfd.3 directory.3 opendir.3 \
+	directory.3 readdir.3 directory.3 rewinddir.3 directory.3 seekdir.3 \
+	directory.3 telldir.3
+MLINKS+=exec.3 execl.3 exec.3 execle.3 exec.3 execlp.3 exec.3 execv.3 \
+	exec.3 execvp.3
+MLINKS+=err.3 verr.3 err.3 errx.3 err.3 verrx.3 err.3 warn.3 err.3 vwarn.3 \
+	err.3 warnx.3 err.3 vwarnx.3
+MLINKS+=isinf.3 isnan.3
+MLINKS+=getcap.3 cgetcap.3 getcap.3 cgetclose.3 getcap.3 cgetent.3 \
+	getcap.3 cgetfirst.3 getcap.3 cgetmatch.3 getcap.3 cgetnext.3 \
+	getcap.3 cgetnum.3 getcap.3 cgetset.3 getcap.3 cgetstr.3 \
+	getcap.3 cgetustr.3
+MLINKS+=getcwd.3 getwd.3
+MLINKS+=getfsent.3 endfsent.3 getfsent.3 getfsfile.3 getfsent.3 getfsspec.3 \
+	getfsent.3 getfstype.3 getfsent.3 setfsent.3
+MLINKS+=getgrent.3 endgrent.3 getgrent.3 setgroupent.3 getgrent.3 getgrgid.3 \
+	getgrent.3 getgrnam.3 getgrent.3 setgrent.3 getgrent.3 setgrfile.3
+MLINKS+=gethostname.3 sethostname.3
+MLINKS+=getdomainname.3 setdomainname.3
+MLINKS+=getnetgrent.3 endnetgrent.3 getnetgrent.3 setnetgrent.3 \
+	getnetgrent.3 innetgr.3
+MLINKS+=getpwent.3 endpwent.3 getpwent.3 setpassent.3 getpwent.3 getpwnam.3 \
+	getpwent.3 getpwuid.3 getpwent.3 setpwent.3 getpwent.3 setpwfile.3
+MLINKS+=getttyent.3 endttyent.3 getttyent.3 getttynam.3 getttyent.3 setttyent.3
+MLINKS+=getvfsent.3 getvfsbyname.3 getvfsent.3 getvfsbytype.3 \
+	getvfsent.3 setvfsent.3 getvfsent.3 endvfsent.3 \
+	getvfsent.3 vfsisloadable.3 getvfsent.3 vfsload.3
+MLINKS+=getusershell.3 endusershell.3 getusershell.3 setusershell.3
+MLINKS+=glob.3 globfree.3
+MLINKS+=popen.3 pclose.3
+MLINKS+=psignal.3 sys_siglist.3
+MLINKS+=pwcache.3 user_from_uid.3 pwcache.3 group_from_gid.3
+MLINKS+=rand48.3 _rand48.3 rand48.3 drand48.3 rand48.3 erand48.3 \
+	rand48.3 jrand48.3 rand48.3 lcong48.3 rand48.3 lrand48.3 \
+	rand48.3 mrand48.3 rand48.3 nrand48.3 rand48.3 seed48.3 \
+	rand48.3 srand48.3
+MLINKS+=scandir.3 alphasort.3
+MLINKS+=setjmp.3 _longjmp.3 setjmp.3 _setjmp.3 setjmp.3 longjmp.3 \
+	setjmp.3 longjmperr.3 setjmp.3 longjmperror.3 \
+	setjmp.3 sigsetjmp.3 setjmp.3 siglongjmp.3
+MLINKS+=setmode.3 getmode.3
+MLINKS+=sigsetops.3 sigemptyset.3 sigsetops.3 sigfillset.3 \
+	sigsetops.3 sigaddset.3 sigsetops.3 sigdelset.3 \
+	sigsetops.3 sigismember.3
+MLINKS+=syslog.3 closelog.3 syslog.3 openlog.3 syslog.3 setlogmask.3 \
+	syslog.3 vsyslog.3
+MLINKS+=tcsendbreak.3 tcdrain.3 tcsendbreak.3 tcflush.3 tcsendbreak.3 tcflow.3
+MLINKS+=tcsetattr.3 tcgetattr.3 tcsetattr.3 cfsetospeed.3 \
+	tcsetattr.3 cfgetospeed.3 tcsetattr.3 cfgetispeed.3 \
+	tcsetattr.3 cfsetispeed.3 tcsetattr.3 cfsetspeed.3 \
+	tcsetattr.3 cfmakeraw.3
+MLINKS+=ttyname.3 isatty.3 ttyname.3 ttyslot.3
+MLINKS+=tzset.3 tzsetwall.3
+MLINKS+=vis.3 strvis.3 vis.3 strvisx.3
diff --git a/lib/libc/gen/__xuname.c b/lib/libc/gen/__xuname.c
new file mode 100644
index 0000000..93f659e
--- /dev/null
+++ b/lib/libc/gen/__xuname.c
@@ -0,0 +1,125 @@
+/*-
+ * Copyright (c) 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char sccsid[] = "From: @(#)uname.c	8.1 (Berkeley) 1/4/94";*/
+static const char rcsid[] =
+	"$Id: uname.c,v 1.3 1995/05/30 05:40:29 rgrimes Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/utsname.h>
+#include <errno.h>
+
+int
+uname(name)
+	struct utsname *name;
+{
+	int mib[2], rval;
+	size_t len;
+	char *p;
+	int oerrno;
+
+	rval = 0;
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_OSTYPE;
+	len = sizeof(name->sysname);
+	oerrno = errno;
+	if (sysctl(mib, 2, &name->sysname, &len, NULL, 0) == -1) {
+		if(errno == ENOMEM)
+			errno = oerrno;
+		else
+			rval = -1;
+	}
+	name->sysname[sizeof(name->sysname) - 1] = '\0';
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_HOSTNAME;
+	len = sizeof(name->nodename);
+	oerrno = errno;
+	if (sysctl(mib, 2, &name->nodename, &len, NULL, 0) == -1) {
+		if(errno == ENOMEM)
+			errno = oerrno;
+		else
+			rval = -1;
+	}
+	name->nodename[sizeof(name->nodename) - 1] = '\0';
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_OSRELEASE;
+	len = sizeof(name->release);
+	oerrno = errno;
+	if (sysctl(mib, 2, &name->release, &len, NULL, 0) == -1) {
+		if(errno == ENOMEM)
+			errno = oerrno;
+		else
+			rval = -1;
+	}
+	name->release[sizeof(name->release) - 1] = '\0';
+
+	/* The version may have newlines in it, turn them into spaces. */
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_VERSION;
+	len = sizeof(name->version);
+	oerrno = errno;
+	if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1) {
+		if (errno == ENOMEM)
+			errno = oerrno;
+		else
+			rval = -1;
+	}
+	name->version[sizeof(name->version) - 1] = '\0';
+	for (p = name->version; len--; ++p) {
+		if (*p == '\n' || *p == '\t') {
+			if (len > 1)
+				*p = ' ';
+			else
+				*p = '\0';
+		}
+	}
+
+	mib[0] = CTL_HW;
+	mib[1] = HW_MACHINE;
+	len = sizeof(name->machine);
+	oerrno = errno;
+	if (sysctl(mib, 2, &name->machine, &len, NULL, 0) == -1) {
+		if (errno == ENOMEM)
+			errno = oerrno;
+		else
+			rval = -1;
+	}
+	name->machine[sizeof(name->machine) - 1] = '\0';
+	return (rval);
+}
diff --git a/lib/libc/gen/_rand48.c b/lib/libc/gen/_rand48.c
new file mode 100644
index 0000000..990e2c8
--- /dev/null
+++ b/lib/libc/gen/_rand48.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 1993 Martin Birgmeier
+ * All rights reserved.
+ *
+ * You may redistribute unmodified or modified versions of this source
+ * code provided that the above copyright notice and this and the
+ * following conditions are retained.
+ *
+ * This software is provided ``as is'', and comes with no warranties
+ * of any kind. I shall in no event be liable for anything that happens
+ * to anyone/anything when using this software.
+ */
+
+#include "rand48.h"
+
+unsigned short _rand48_seed[3] = {
+	RAND48_SEED_0,
+	RAND48_SEED_1,
+	RAND48_SEED_2
+};
+unsigned short _rand48_mult[3] = {
+	RAND48_MULT_0,
+	RAND48_MULT_1,
+	RAND48_MULT_2
+};
+unsigned short _rand48_add = RAND48_ADD;
+
+void
+_dorand48(unsigned short xseed[3])
+{
+	unsigned long accu;
+	unsigned short temp[2];
+
+	accu = (unsigned long) _rand48_mult[0] * (unsigned long) xseed[0] +
+	 (unsigned long) _rand48_add;
+	temp[0] = (unsigned short) accu;	/* lower 16 bits */
+	accu >>= sizeof(unsigned short) * 8;
+	accu += (unsigned long) _rand48_mult[0] * (unsigned long) xseed[1] +
+	 (unsigned long) _rand48_mult[1] * (unsigned long) xseed[0];
+	temp[1] = (unsigned short) accu;	/* middle 16 bits */
+	accu >>= sizeof(unsigned short) * 8;
+	accu += _rand48_mult[0] * xseed[2] + _rand48_mult[1] * xseed[1] + _rand48_mult[2] * xseed[0];
+	xseed[0] = temp[0];
+	xseed[1] = temp[1];
+	xseed[2] = (unsigned short) accu;
+}
diff --git a/lib/libc/gen/alarm.3 b/lib/libc/gen/alarm.3
new file mode 100644
index 0000000..fb1893f
--- /dev/null
+++ b/lib/libc/gen/alarm.3
@@ -0,0 +1,86 @@
+.\" Copyright (c) 1980, 1991, 1993, 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)alarm.3	8.2 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt ALARM 3
+.Os BSD 4
+.Sh NAME
+.Nm alarm
+.Nd set signal timer alarm
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft u_int
+.Fn alarm "u_int seconds"
+.Sh DESCRIPTION
+.Bf -symbolic
+This interface is made obsolete by setitimer(2).
+.Ef
+.Pp
+The
+.Fn alarm
+function
+waits a count of
+.Ar seconds
+before asserting the terminating signal
+.Dv SIGALRM .
+When the signal has successfully been caught,
+.Fn alarm
+returns the amount of time left on the clock.
+The maximum number of
+.Ar seconds
+allowed
+is 2147483647.
+.Pp
+If an alarm has been set with
+.Fn alarm ,
+another call to
+.Fn alarm
+will supersede the prior call.
+The request
+.Fn alarm "0"
+voids the current
+alarm.
+.Sh SEE ALSO
+.Xr sigaction 2 ,
+.Xr setitimer 2 ,
+.Xr sigpause 2 ,
+.Xr sigvec 2 ,
+.Xr signal 3 ,
+.Xr sleep 3 ,
+.Xr ualarm 3 ,
+.Xr usleep 3
+.Sh HISTORY
+An
+.Fn alarm
+function appeared in 
+.At v7 .
diff --git a/lib/libc/gen/alarm.c b/lib/libc/gen/alarm.c
new file mode 100644
index 0000000..7a7dc68
--- /dev/null
+++ b/lib/libc/gen/alarm.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)alarm.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Backwards compatible alarm.
+ */
+#include <sys/time.h>
+#include <unistd.h>
+
+unsigned int
+alarm(secs)
+	unsigned int secs;
+{
+	struct itimerval it, oitv;
+	register struct itimerval *itp = &it;
+
+	timerclear(&itp->it_interval);
+	itp->it_value.tv_sec = secs;
+	itp->it_value.tv_usec = 0;
+	if (setitimer(ITIMER_REAL, itp, &oitv) < 0)
+		return (-1);
+	if (oitv.it_value.tv_usec)
+		oitv.it_value.tv_sec++;
+	return (oitv.it_value.tv_sec);
+}
diff --git a/lib/libc/gen/assert.c b/lib/libc/gen/assert.c
new file mode 100644
index 0000000..4914aca
--- /dev/null
+++ b/lib/libc/gen/assert.c
@@ -0,0 +1,53 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)assert.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+void
+__assert(file, line, failedexpr)
+	const char *file, *failedexpr;
+	int line;
+{
+	(void)fprintf(stderr,
+	    "assertion \"%s\" failed: file \"%s\", line %d\n",
+	    failedexpr, file, line);
+	abort();
+	/* NOTREACHED */
+}
diff --git a/lib/libc/gen/clock.3 b/lib/libc/gen/clock.3
new file mode 100644
index 0000000..739a7ea
--- /dev/null
+++ b/lib/libc/gen/clock.3
@@ -0,0 +1,67 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)clock.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt CLOCK 3
+.Os
+.Sh NAME
+.Nm clock
+.Nd determine processor time used
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Ft clock_t
+.Fn clock void
+.Sh DESCRIPTION
+The
+.Fn clock
+function
+determines the amount of processor time used since the invocation of the
+calling process, measured in
+.Dv CLOCKS_PER_SEC Ns 's
+of a second.
+.Sh RETURN VALUES
+The
+.Fn clock
+function returns the amount of time used unless an error occurs, in which
+case the return value is \-1.
+.Sh SEE ALSO
+.Xr getrusage 2
+.Sh STANDARDS
+The
+.Fn clock
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/gen/clock.c b/lib/libc/gen/clock.c
new file mode 100644
index 0000000..fe867c2
--- /dev/null
+++ b/lib/libc/gen/clock.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)clock.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+
+/*
+ * Convert usec to clock ticks; could do (usec * CLOCKS_PER_SEC) / 1000000,
+ * but this would overflow if we switch to nanosec.
+ */
+#define	CONVTCK(r)	((r).tv_sec * CLOCKS_PER_SEC \
+			 + (r).tv_usec / (1000000 / CLOCKS_PER_SEC))
+
+clock_t
+clock()
+{
+	struct rusage ru;
+
+	if (getrusage(RUSAGE_SELF, &ru))
+		return ((clock_t) -1);
+	return((clock_t)((CONVTCK(ru.ru_utime) + CONVTCK(ru.ru_stime))));
+}
diff --git a/lib/libc/gen/closedir.c b/lib/libc/gen/closedir.c
new file mode 100644
index 0000000..3a4fc9d
--- /dev/null
+++ b/lib/libc/gen/closedir.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)closedir.c	8.1 (Berkeley) 6/10/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <dirent.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+/*
+ * close a directory.
+ */
+int
+closedir(dirp)
+	register DIR *dirp;
+{
+	int fd;
+
+	seekdir(dirp, dirp->dd_rewind);	/* free seekdir storage */
+	fd = dirp->dd_fd;
+	dirp->dd_fd = -1;
+	dirp->dd_loc = 0;
+	free((void *)dirp->dd_buf);
+	free((void *)dirp);
+	_reclaim_telldir(dirp);
+	return(close(fd));
+}
diff --git a/lib/libc/gen/config.c b/lib/libc/gen/config.c
new file mode 100644
index 0000000..ffe2766
--- /dev/null
+++ b/lib/libc/gen/config.c
@@ -0,0 +1,187 @@
+/*
+ * ----------------------------------------------------------------------------
+ * "THE BEER-WARE LICENSE" (Revision 42):
+ * <phk@login.dknet.dk> wrote this file.  As long as you retain this notice you
+ * can do whatever you want with this stuff. If we meet some day, and you think
+ * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
+ * ----------------------------------------------------------------------------
+ *
+ * $Id: config.c,v 1.1 1994/11/13 20:47:43 phk Exp $
+ *
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char rcsid[] = "$Id: config.c,v 1.1 1994/11/13 20:47:43 phk Exp $";
+#endif				/* LIBC_SCCS and not lint */
+
+/*
+ * This file contains four procedures used to read config-files.
+ *
+ * char * config_open(const char *filename,int contlines)
+ *	Will open the named file, read it into a private malloc'ed area,
+ *	and close the file again.
+ *	All lines where the first !isspace() char is '#' are deleted.
+ *	If contlines are non-zero lines where the first char is isspace()
+ *	will be joined to the preceeding line.
+ *	In case of trouble the name of the offending system call will be
+ *	returned.  On success NULL is returned.
+ *
+ * void   config_close()
+ *	This will free the internal malloc'ed area.
+ *
+ * char * config_next()
+ *	This will return a pointer to the next entry in the area.  NULL is
+ *	returned at "end of file".  The return value is '\0' terminated, and
+ *	can be modified, but the contents must be copied somewhere else for
+ *	permanent use.
+ *
+ * char * config_skip(char **p)
+ *	This will pick out the next word from the string.  The return-value
+ *	points to the word found, and *p is advanced past the word.  NULL is
+ *	returned at "end of string".
+ *
+ * Many programs have a n*100 bytes config-file and N*1000 bytes of source
+ * to read it.  Doing pointer-aerobics on files that small is a waste of
+ * time, and bashing around with getchar/ungetc isn't much better.  These
+ * routines implement a simple algorithm and syntax.
+ *
+ * config_skip consider a contiguous string of !isspace() chars a word.
+ *
+ * 13nov1994 Poul-Henning Kamp  phk@login.dknet.dk
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <ctype.h>
+#include <string.h>
+
+static char *file_buf;
+static char *ptr;
+
+char   *
+config_open(const char *filename, int contlines)
+{
+	int     fd;
+	struct stat st;
+	char   *p, *q;
+
+	if ((fd = open(filename, O_RDONLY)) < 0)
+		return "open";
+	if (fstat(fd, &st) < 0) {
+		close(fd);
+		return "fstat";
+	}
+	if (file_buf)
+		free(file_buf);
+	file_buf = malloc(st.st_size + 2);
+	if (!file_buf) {
+		close(fd);
+		return "malloc";
+	}
+	if (st.st_size != read(fd, file_buf, st.st_size)) {
+		free(file_buf);
+		file_buf = (char *) 0;
+		close(fd);
+		return "read";
+	}
+	close(fd);
+	file_buf[st.st_size] = '\n';
+	file_buf[st.st_size + 1] = '\0';
+
+	/*
+         * /^[ \t]*#[^\n]*$/d
+	 *
+	 * Delete all lines where the first !isspace() char is '#'
+         */
+
+	ptr = file_buf;
+	for (p = ptr; *p;) {
+		for (q = p; *q != '\n' && isspace(*q); q++)
+			continue;
+		if (*q == '#') {
+			p = strchr(p, '\n');
+			if (p)
+				p++;
+		} else {
+			q = strchr(p, '\n');
+			q++;
+			memcpy(ptr, p, q - p);
+			ptr += q - p;
+			p = q;
+		}
+	}
+	*ptr = '\0';
+	ptr = file_buf;
+
+	if (!contlines)
+		return 0;
+
+	/* Join all lines starting with a isspace() char to the preceeding
+	 * line */
+
+	for (p = ptr; *p;) {
+		q = strchr(p, '\n');
+		if (isspace(*(q + 1)))
+			*q = ' ';
+		p = q + 1;
+	}
+
+	return 0;
+}
+
+void
+config_close(void)
+{
+	if (file_buf)
+		free(file_buf);
+	ptr = file_buf = 0;
+}
+
+/*
+ * Get next entry.  config_open did all the weird stuff, so just return
+ * the next line.
+ */
+
+char   *
+config_next(void)
+{
+	char   *p;
+
+	/* We might be done already ! */
+	if (!ptr || !*ptr)
+		return 0;
+
+	while (isspace(*ptr))
+	    ptr++;
+	p = ptr;
+	ptr = strchr(p, '\n');
+	if (ptr) {
+		*ptr = '\0';
+		ptr++;
+	}
+	return p;
+}
+
+/*
+ * Return next word
+ */
+
+char   *
+config_skip(char **p)
+{
+	char   *q, *r;
+
+	if (!*p || !**p)
+		return 0;
+	for (q = *p; isspace(*q); q++);
+	if (!*q)
+		return 0;
+	for (r = q; *r && !isspace(*r); r++);
+	if (*r)
+		*r++ = '\0';
+	*p = r;
+	return q;
+}
diff --git a/lib/libc/gen/config_open.3 b/lib/libc/gen/config_open.3
new file mode 100644
index 0000000..f51bc6c
--- /dev/null
+++ b/lib/libc/gen/config_open.3
@@ -0,0 +1,73 @@
+.\" ----------------------------------------------------------------------------
+.\" "THE BEER-WARE LICENSE" (Revision 42):
+.\" <phk@login.dknet.dk> wrote this file.  As long as you retain this notice you
+.\" can do whatever you want with this stuff. If we meet some day, and you think
+.\" this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
+.\" ----------------------------------------------------------------------------
+.\" 
+.\"  $Id$
+.\" 
+.Dd November 13, 1994
+.Dt config_open 3
+.Os FreeBSD
+.Sh NAME
+.Nm config_open ,
+.Nm config_close ,
+.Nm config_next ,
+.Nm config_skip
+.Nd read config files
+.Sh SYNOPSIS
+.Ft char *
+.Fn config_open "const char *filename" "int contlines"
+.Ft void
+.Fn config_close
+.Ft char *
+.Fn config_next
+.Ft char *
+.Fn config_skip "char **string"
+.Sh DESCRIPTION
+These functions are used to read config files with the following syntax:
+.Bl -bullet -compact
+.It
+All lines where the first
+.Sq !isspace()
+is '#' are comments which are discarded.
+.It
+If continuation-lines are enabled, any line starting with a 
+.Sq isspace()
+character is joined to the preceeding line and blank lines are discarded.
+.It
+An entry starts at the first 
+.Sq !isspace()
+character and ends at the first 
+.Sq Li \en
+.Li .
+.El
+.Pp
+.Fn config_open
+will open the specified
+.Fa filename
+and read it into a private malloced area, and close the file again. If
+.Fa contlines
+is non-zero, continuation lines will be allowed.
+In case of trouble, the name of the system-call causing the trouble will
+be returned. If successful,
+.Fn config_open
+returns NULL.
+.Pp
+.Fn config_close
+will free the malloced area.
+.Pp
+.Fn config_next
+returns the next entry in the area. NULL is returned to indicate End-of-file.
+The returned string is null-terminated.
+.Pp
+.Fn config_skip
+returns the next word from the string
+.Fa *string
+.Li .
+.Fa *string
+will be advanced to point to the next word.
+NULL is returned to indicate the end of the string.
+.Sh AUTHOR
+Poul-Henning Kamp <phk@login.dknet.dk>
diff --git a/lib/libc/gen/confstr.3 b/lib/libc/gen/confstr.3
new file mode 100644
index 0000000..8714452
--- /dev/null
+++ b/lib/libc/gen/confstr.3
@@ -0,0 +1,123 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)confstr.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt CONFSTR 3
+.Os BSD 4
+.Sh NAME
+.Nm confstr
+.Nd get string-valued configurable variables
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft size_t
+.Fn confstr "int name" "char *buf" "size_t len"
+.Sh DESCRIPTION
+.Bf -symbolic
+This interface is obsoleted by sysctl(3).
+.Ef
+.Pp
+The
+.Fn confstr
+function provides a method for applications to get configuration
+defined string values.
+.Pp
+The
+.Fa name
+argument specifies the system variable to be queried.
+Symbolic constants for each name value are found in the include file
+.Li <unistd.h> .
+The
+.Fa len
+argument specifies the size of the buffer referenced by the
+argument
+.Fa buf .
+If
+.Fa len
+is non-zero,
+.Fa buf
+is a non-null pointer, and
+.Fa name
+has a value, up to
+.Fa len
+\- 1 bytes of the value are copied into the buffer 
+.Fa buf .
+The copied value is always null terminated.
+.Pp
+The available values are as follows:
+.Pp
+.Bl -tag -width "123456"
+.Pp
+.It Li _CS_PATH
+Return a value for the
+.Ev PATH
+environment variable that finds all the standard utilities.
+.El
+.Sh RETURN VALUES
+If the call to
+.Nm confstr
+is not successful, \-1 is returned and
+.Va errno
+is set appropriately.
+Otherwise, if the variable does not have a configuration defined value,
+0 is returned and
+.Va errno
+is not modified.
+Otherwise, the buffer size needed to hold the entire configuration-defined
+value is returned.
+If this size is greater than the argument
+.Fa len ,
+the string in
+.Fa buf
+was truncated.
+.Sh ERRORS
+The
+.Nm confstr
+function may fail and set
+.Va error
+for any of the errors specified for the library functions
+.Xr malloc 3
+and
+.Xr sysctl 3 .
+.Pp
+In addition, the following errors may be reported:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value of the
+.Fa name
+argument is invalid.
+.Sh SEE ALSO
+.Xr sysctl 3
+.Sh HISTORY
+The
+.Nm confstr
+function first appeared in 4.4BSD.
diff --git a/lib/libc/gen/confstr.c b/lib/libc/gen/confstr.c
new file mode 100644
index 0000000..0a7078e
--- /dev/null
+++ b/lib/libc/gen/confstr.c
@@ -0,0 +1,86 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)confstr.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+#include <errno.h>
+#include <paths.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+size_t
+confstr(name, buf, len)
+	int name;
+	char *buf;
+	size_t len;
+{
+	size_t tlen;
+	int mib[2], sverrno;
+	char *p;
+
+	switch (name) {
+	case _CS_PATH:
+		mib[0] = CTL_USER;
+		mib[1] = USER_CS_PATH;
+		if (sysctl(mib, 2, NULL, &tlen, NULL, 0) == -1)
+			return (-1);
+		if (len != 0 && buf != NULL) {
+			if ((p = malloc(tlen)) == NULL)
+				return (-1);
+			if (sysctl(mib, 2, p, &tlen, NULL, 0) == -1) {
+				sverrno = errno;
+				free(p);
+				errno = sverrno;
+				return (-1);
+			}
+			/*
+			 * POSIX 1003.2 requires partial return of
+			 * the string -- that should be *real* useful.
+			 */
+			(void)strncpy(buf, p, len - 1);
+			buf[len - 1] = '\0';
+			free(p);
+		}
+		return (tlen + 1);
+	default:
+		errno = EINVAL;
+		return (0);
+	}
+	/* NOTREACHED */
+}
diff --git a/lib/libc/gen/crypt.3 b/lib/libc/gen/crypt.3
new file mode 100644
index 0000000..d95f704
--- /dev/null
+++ b/lib/libc/gen/crypt.3
@@ -0,0 +1,297 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)crypt.3	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt CRYPT 3
+.Os
+.Sh NAME
+.Nm crypt ,
+.Nm setkey ,
+.Nm encrypt ,
+.Nm des_setkey ,
+.Nm des_cipher
+.Nd DES encryption
+.Sh SYNOPSIS
+.Ft char
+.Fn *crypt "const char *key" "const char *setting"
+.Ft int
+.Fn setkey "char *key"
+.Ft int
+.Fn encrypt "char *block" "int flag"
+.Ft int
+.Fn des_setkey "const char *key"
+.Ft int
+.Fn des_cipher "const char *in" "char *out" "long salt" "int count"
+.Sh DESCRIPTION
+The
+.Xr crypt
+function
+performs password encryption.
+It is derived from the
+.Tn NBS
+Data Encryption Standard.
+Additional code has been added to deter
+key search attempts.
+The first argument to
+.Nm crypt
+is
+a
+.Dv NUL Ns -terminated
+string (normally a password typed by a user).
+The second is a character array, 9 bytes in length, consisting of an
+underscore (``_'') followed by 4 bytes of iteration count and 4 bytes
+of salt.
+Both the iteration
+.Fa count
+and the 
+.Fa salt
+are encoded with 6 bits per character, least significant bits first.
+The values 0 to 63 are encoded by the characters ``./0-9A-Za-z'',
+respectively.
+.Pp
+The
+.Fa salt
+is used to induce disorder in to the
+.Tn DES
+algorithm
+in one of 16777216
+possible ways
+(specifically, if bit
+.Em i
+of the
+.Ar salt
+is set then bits
+.Em i
+and
+.Em i+24
+are swapped in the
+.Tn DES
+``E'' box output).
+The
+.Ar key
+is divided into groups of 8 characters (a short final group is null-padded)
+and the low-order 7 bits of each character (56 bits per group) are
+used to form the DES key as follows: the first group of 56 bits becomes the
+initial DES key.
+For each additional group, the XOR of the group bits and the encryption of
+the DES key with itself becomes the next DES key.
+Then the final DES key is used to perform
+.Ar count
+cumulative encryptions of a 64-bit constant.
+The value returned is a
+.Dv NUL Ns -terminated
+string, 20 bytes in length, consisting
+of the
+.Ar setting
+followed by the encoded 64-bit encryption.
+.Pp
+For compatibility with historical versions of
+.Xr crypt 3 ,
+the
+.Ar setting
+may consist of 2 bytes of salt, encoded as above, in which case an
+iteration
+.Ar count
+of 25 is used, fewer perturbations of
+.Tn DES
+are available, at most 8
+characters of
+.Ar key
+are used, and the returned value is a
+.Dv NUL Ns -terminated
+string 13 bytes in length.
+.Pp
+The
+functions,
+.Fn encrypt ,
+.Fn setkey ,
+.Fn des_setkey
+and
+.Fn des_cipher
+allow limited access to the
+.Tn DES
+algorithm itself.
+The
+.Ar key
+argument to
+.Fn setkey
+is a 64 character array of
+binary values (numeric 0 or 1).
+A 56-bit key is derived from this array by dividing the array
+into groups of 8 and ignoring the last bit in each group.
+.Pp
+The
+.Fn encrypt
+argument
+.Fa block
+is also a 64 character array of
+binary values.
+If the value of
+.Fa flag
+is 0,
+the argument
+.Fa block
+is encrypted, otherwise it
+is decrypted.
+The encryption or decryption is returned in the original
+array
+.Fa block
+after using the
+key specified
+by
+.Fn setkey
+to process it.
+.Pp
+The
+.Fn des_setkey
+and
+.Fn des_cipher
+functions are faster but less portable than
+.Fn setkey
+and
+.Fn encrypt .
+The argument to
+.Fn des_setkey
+is a character array of length 8.
+The
+.Em least
+significant bit in each character is ignored and the next 7 bits of each
+character are concatenated to yield a 56-bit key.
+The function
+.Fn des_cipher
+encrypts (or decrypts if
+.Fa count
+is negative) the 64-bits stored in the 8 characters at
+.Fa in
+using
+.Xr abs 3
+of
+.Fa count
+iterations of
+.Tn DES
+and stores the 64-bit result in the 8 characters at
+.Fa out .
+The
+.Fa salt
+specifies perturbations to
+.Tn DES
+as described above.
+.Pp
+The function
+.Fn crypt
+returns a pointer to the encrypted value on success and NULL on failure.
+The functions
+.Fn setkey ,
+.Fn encrypt ,
+.Fn des_setkey ,
+and
+.Fn des_cipher
+return 0 on success and 1 on failure.
+Historically, the functions
+.Fn setkey
+and
+.Fn encrypt
+did not return any value.
+They have been provided return values primarily to distinguish
+implementations where hardware support is provided but not
+available or where the DES encryption is not available due to the
+usual political silliness.
+.Pp
+Use of
+.Fn crypt
+requires linking with the
+.Nm libcrypt
+library.  The 
+.Fn setkey ,
+.Fn encrypt ,
+.Fn des_setkey
+and
+.Fn des_cipher
+can be found in the
+.Nm libcipher
+library (the standard C library,
+.Nm libc ,
+only contains stubs to these routines).
+
+.Sh SEE ALSO
+.Xr login 1 ,
+.Xr passwd 1 ,
+.Xr getpass 3 ,
+.Xr passwd 5
+.sp
+.Rs
+.%T "Mathematical Cryptology for Computer Scientists and Mathematicians"
+.%A Wayne Patterson
+.%D 1987
+.%N ISBN 0-8476-7438-X
+.Re
+.Rs
+.%T "Password Security: A Case History"
+.%A R. Morris
+.%A Ken Thompson
+.%J "Communications of the ACM"
+.%V vol. 22
+.%P pp. 594-597
+.%D Nov. 1979
+.Re
+.Rs
+.%T "DES will be Totally Insecure within Ten Years"
+.%A M.E. Hellman
+.%J "IEEE Spectrum"
+.%V vol. 16
+.%P pp. 32-39
+.%D July 1979
+.Re
+.Sh HISTORY
+A rotor-based
+.Fn crypt
+function appeared in
+.At v6 .
+The current style
+.Fn crypt
+first appeared in
+.At v7 .
+.Sh BUGS
+Dropping the
+.Em least
+significant bit in each character of the argument to
+.Fn des_setkey
+is ridiculous.
+.Pp
+The
+.Fn crypt
+function leaves its result in an internal static object and returns
+a pointer to that object.
+Subsequent calls to
+.Fn crypt
+will modify the same object.
diff --git a/lib/libc/gen/crypt.c b/lib/libc/gen/crypt.c
new file mode 100644
index 0000000..c1417b8
--- /dev/null
+++ b/lib/libc/gen/crypt.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Tom Truscott.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/* from static char sccsid[] = "@(#)crypt.c	5.11 (Berkeley) 6/25/91"; */
+static char rcsid[] = "$Header: /home/ncvs/src/lib/libc/gen/crypt.c,v 1.3 1995/05/30 05:40:10 rgrimes Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+
+/*
+ * UNIX password, and DES, encryption.
+ *
+ * since this is non-exportable, this is just a dummy.  if you want real
+ * encryption, make sure you've got libcrypt.a around.
+ */
+
+__warn_references(des_setkey,
+	"WARNING!  des_setkey(3) not present in the system!");
+
+int
+des_setkey(key)
+	register const char *key;
+{
+	fprintf(stderr, "WARNING!  des_setkey(3) not present in the system!\n");
+	return (0);
+}
+
+__warn_references(des_cipher,
+	"WARNING!  des_cipher(3) not present in the system!");
+
+int
+des_cipher(in, out, salt, num_iter)
+	const char     *in;
+	char           *out;
+	long            salt;
+	int             num_iter;
+{
+	fprintf(stderr, "WARNING!  des_cipher(3) not present in the system!\n");
+	bcopy(in, out, 8);
+	return (0);
+}
+
+__warn_references(setkey,
+	"WARNING!  setkey(3) not present in the system!");
+
+int
+setkey(key)
+	register const char *key;
+{
+	fprintf(stderr, "WARNING!  setkey(3) not present in the system!\n");
+	return (0);
+}
+
+__warn_references(encrypt,
+	"WARNING!  encrypt(3) not present in the system!");
+
+int
+encrypt(block, flag)
+	register char  *block;
+	int             flag;
+{
+	fprintf(stderr, "WARNING!  encrypt(3) not present in the system!\n");
+	return (0);
+}
diff --git a/lib/libc/gen/ctermid.3 b/lib/libc/gen/ctermid.3
new file mode 100644
index 0000000..ff92420
--- /dev/null
+++ b/lib/libc/gen/ctermid.3
@@ -0,0 +1,93 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)ctermid.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt CTERMID 3
+.Os
+.Sh NAME
+.Nm ctermid
+.Nd generate terminal pathname
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft char *
+.Fn ctermid "char *buf"
+.Sh DESCRIPTION
+The
+.Fn ctermid
+function generates a string, that, when used as a pathname, refers to
+the current controlling terminal of the calling process.
+.Pp
+If
+.Ar buf
+is the
+.Dv NULL
+pointer, a pointer to a static area is returned.
+Otherwise, the pathname is copied into the memory referenced by
+.Ar buf .
+The argument
+.Ar buf
+is assumed to be at least
+.Dv L_ctermid
+(as defined in the include
+file
+.Aq Pa stdio.h )
+bytes long.
+.Pp
+The current implementation simply returns
+.Ql /dev/tty .
+.Sh RETURN VALUES
+Upon successful completion, a
+.Pf non- Dv NULL
+pointer is returned.
+Otherwise, a
+.Dv NULL
+pointer is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+The current implementation detects no error conditions.
+.Sh SEE ALSO
+.Xr ttyname 3
+.Sh STANDARDS
+The
+.Xr ctermid
+function conforms to
+.St -p1003.1-88 .
+.Sh BUGS
+By default the
+.Fn ctermid
+function
+writes all information to an internal static object.
+Subsequent calls to
+.Fn ctermid
+will modify the same object.
diff --git a/lib/libc/gen/ctermid.c b/lib/libc/gen/ctermid.c
new file mode 100644
index 0000000..262d6df
--- /dev/null
+++ b/lib/libc/gen/ctermid.c
@@ -0,0 +1,53 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ctermid.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <paths.h>
+#include <string.h>
+
+char *
+ctermid(s)
+	char *s;
+{
+	static char def[] = _PATH_TTY;
+
+	if (s) {
+		bcopy(def, s, sizeof(_PATH_TTY));
+		return(s);
+	}
+	return(def);
+}
diff --git a/lib/libc/gen/daemon.3 b/lib/libc/gen/daemon.3
new file mode 100644
index 0000000..1905923
--- /dev/null
+++ b/lib/libc/gen/daemon.3
@@ -0,0 +1,74 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)daemon.3	8.1 (Berkeley) 6/9/93
+.Dd June 9, 1993
+.Dt DAEMON 3
+.Os
+.Sh NAME
+.Nm daemon
+.Nd run in the background
+.Sh SYNOPSIS
+.Fn daemon "int nochdir" "int noclose"
+.Sh DESCRIPTION
+.Pp
+The
+.Fn daemon
+function is for programs wishing to detach themselves from the
+controlling terminal and run in the background as system daemons.
+.Pp
+Unless the argument
+.Fa nochdir
+is non-zero,
+.Fn daemon
+changes the current working directory to the root (``/'').
+.Pp
+Unless the argument
+.Fa noclose
+is non-zero,
+.Fn daemon
+will redirect standard input, standard output and standard error
+to ``/dev/null''.
+.Sh ERRORS
+The function
+.Fn daemon
+may fail and set
+.Va errno
+for any of the errors specified for the library functions
+.Xr fork 2
+and 
+.Xr setsid 2 .
+.Sh SEE ALSO
+.Xr setsid 2
+.Sh HISTORY
+The
+.Fn daemon
+function first appeared in 4.4BSD.
diff --git a/lib/libc/gen/daemon.c b/lib/libc/gen/daemon.c
new file mode 100644
index 0000000..6b3409c
--- /dev/null
+++ b/lib/libc/gen/daemon.c
@@ -0,0 +1,71 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)daemon.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <fcntl.h>
+#include <paths.h>
+#include <unistd.h>
+
+int
+daemon(nochdir, noclose)
+	int nochdir, noclose;
+{
+	int fd;
+
+	switch (fork()) {
+	case -1:
+		return (-1);
+	case 0:
+		break;
+	default:
+		_exit(0);
+	}
+
+	if (setsid() == -1)
+		return (-1);
+
+	if (!nochdir)
+		(void)chdir("/");
+
+	if (!noclose && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
+		(void)dup2(fd, STDIN_FILENO);
+		(void)dup2(fd, STDOUT_FILENO);
+		(void)dup2(fd, STDERR_FILENO);
+		if (fd > 2)
+			(void)close (fd);
+	}
+	return (0);
+}
diff --git a/lib/libc/gen/devname.3 b/lib/libc/gen/devname.3
new file mode 100644
index 0000000..7583bb4
--- /dev/null
+++ b/lib/libc/gen/devname.3
@@ -0,0 +1,66 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)devname.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt DEVNAME 3
+.Os BSD 4.4
+.Sh NAME
+.Nm devname
+.Nd get device name
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft char *
+.Fn devname "dev_t dev" "mode_t type"
+.Sh DESCRIPTION
+The
+.Fn devname
+function returns a pointer to the name of the block or character
+device in
+.Dq Pa /dev
+with a device number of
+.Fa dev ,
+and a file type matching the one encoded in
+.Fa type
+which must be one of S_IFBLK or S_IFCHR.
+If no device matches the specified values, or no information is
+available, the string
+.Dq ??
+is returned.
+.Sh SEE ALSO
+.Xr stat 2 ,
+.Xr dev_mkdb 8
+.Sh HISTORY
+The
+.Nm devname
+function call appeared in
+.Bx 4.4 .
diff --git a/lib/libc/gen/devname.c b/lib/libc/gen/devname.c
new file mode 100644
index 0000000..3929f92
--- /dev/null
+++ b/lib/libc/gen/devname.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)devname.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <db.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <paths.h>
+#include <stdio.h>
+#include <string.h>
+
+char *
+devname(dev, type)
+	dev_t dev;
+	mode_t type;
+{
+	struct {
+		mode_t type;
+		dev_t dev;
+	} bkey;
+	static DB *db;
+	static int failure;
+	DBT data, key;
+
+	if (!db && !failure &&
+	    !(db = dbopen(_PATH_DEVDB, O_RDONLY, 0, DB_HASH, NULL))) {
+		warn("warning: %s", _PATH_DEVDB);
+		failure = 1;
+	}
+	if (failure)
+		return ("??");
+
+	/*
+	 * Keys are a mode_t followed by a dev_t.  The former is the type of
+	 * the file (mode & S_IFMT), the latter is the st_rdev field.  Be
+	 * sure to clear any padding that may be found in bkey.
+	 */
+	memset(&bkey, 0, sizeof(bkey));
+	bkey.dev = dev;
+	bkey.type = type;
+	key.data = &bkey;
+	key.size = sizeof(bkey);
+	return ((db->get)(db, &key, &data, 0) ? "??" : (char *)data.data);
+}
diff --git a/lib/libc/gen/directory.3 b/lib/libc/gen/directory.3
new file mode 100644
index 0000000..0503989
--- /dev/null
+++ b/lib/libc/gen/directory.3
@@ -0,0 +1,183 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)directory.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt DIRECTORY 3
+.Os BSD 4.2
+.Sh NAME
+.Nm opendir ,
+.Nm readdir ,
+.Nm telldir ,
+.Nm seekdir ,
+.Nm rewinddir ,
+.Nm closedir ,
+.Nm dirfd
+.Nd directory operations
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <dirent.h>
+.Ft DIR *
+.Fn opendir "const char *filename"
+.Ft struct dirent *
+.Fn readdir "DIR *dirp"
+.Ft long
+.Fn telldir "const DIR *dirp"
+.Ft void
+.Fn seekdir "DIR *dirp" "long  loc"
+.Ft void
+.Fn rewinddir "DIR *dirp"
+.Ft int
+.Fn closedir "DIR *dirp"
+.Ft int
+.Fn dirfd "DIR *dirp"
+.Sh DESCRIPTION
+The
+.Fn opendir
+function
+opens the directory named by
+.Fa filename ,
+associates a
+.Em directory stream
+with it
+and
+returns a pointer to be used to identify the
+.Em directory stream
+in subsequent operations.  The pointer
+.Dv NULL
+is returned if
+.Fa filename
+cannot be accessed, or if it cannot
+.Xr malloc 3
+enough memory to hold the whole thing.
+.Pp
+The
+.Fn readdir
+function
+returns a pointer to the next directory entry.  It returns
+.Dv NULL
+upon reaching the end of the directory or detecting an invalid
+.Fn seekdir
+operation.
+.Pp
+The
+.Fn telldir
+function
+returns the current location associated with the named
+.Em directory stream .
+.Pp
+The
+.Fn seekdir
+function
+sets the position of the next
+.Fn readdir
+operation on the
+.Em directory stream .
+The new position reverts to the one associated with the
+.Em directory stream
+when the
+.Fn telldir
+operation was performed.  Values returned by
+.Fn telldir
+are good only for the lifetime of the
+.Dv DIR
+pointer,
+.Fa dirp ,
+from which they are derived.
+If the directory is closed and then reopened, the 
+.Fn telldir
+value may be invalidated due to undetected directory compaction.
+It is safe to use a previous
+.Fn telldir
+value immediately after a call to
+.Fn opendir
+and before any calls to
+.Fn readdir .
+.Pp
+The
+.Fn rewinddir
+function
+resets the position of the named
+.Em directory stream
+to the beginning of the directory.
+.Pp
+The
+.Fn closedir
+function
+closes the named
+.Em directory stream
+and frees the structure associated with the
+.Fa dirp
+pointer,
+returning 0 on success.
+On failure, \-1 is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Pp
+The
+.Fn dirfd
+function
+returns the integer file descriptor associated with the named
+.Em directory stream ,
+see
+.Xr open 2 .
+.Pp
+Sample code which searchs a directory for entry ``name'' is:
+.Bd -literal -offset indent
+len = strlen(name);
+dirp = opendir(".");
+while ((dp = readdir(dirp)) != NULL)
+	if (dp->d_namlen == len && !strcmp(dp->d_name, name)) {
+		(void)closedir(dirp);
+		return FOUND;
+	}
+(void)closedir(dirp);
+return NOT_FOUND;
+.Ed
+.Sh SEE ALSO
+.Xr open 2 ,
+.Xr close 2 ,
+.Xr read 2 ,
+.Xr lseek 2 ,
+.Xr dir 5
+.Sh HISTORY
+The
+.Fn opendir ,
+.Fn readdir ,
+.Fn telldir ,
+.Fn seekdir ,
+.Fn rewinddir ,
+.Fn closedir ,
+and
+.Fn dirfd
+functions appeared in
+.Bx 4.2 .
diff --git a/lib/libc/gen/disklabel.c b/lib/libc/gen/disklabel.c
new file mode 100644
index 0000000..883607b
--- /dev/null
+++ b/lib/libc/gen/disklabel.c
@@ -0,0 +1,169 @@
+/*
+ * Copyright (c) 1983, 1987, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)disklabel.c	8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <sys/param.h>
+#define DKTYPENAMES
+#include <sys/disklabel.h>
+#include <ufs/ffs/fs.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <ctype.h>
+
+static int	gettype __P((char *, char **));
+
+struct disklabel *
+getdiskbyname(name)
+	const char *name;
+{
+	static struct	disklabel disk;
+	register struct	disklabel *dp = &disk;
+	register struct partition *pp;
+	char	*buf;
+	char  	*db_array[2] = { _PATH_DISKTAB, 0 };
+	char	*cp, *cq;	/* can't be register */
+	char	p, max, psize[3], pbsize[3],
+		pfsize[3], poffset[3], ptype[3];
+	u_long	*dx;
+
+	if (cgetent(&buf, db_array, (char *) name) < 0)
+		return NULL;
+
+	bzero((char *)&disk, sizeof(disk));
+	/*
+	 * typename
+	 */
+	cq = dp->d_typename;
+	cp = buf;
+	while (cq < dp->d_typename + sizeof(dp->d_typename) - 1 &&
+	    (*cq = *cp) && *cq != '|' && *cq != ':')
+		cq++, cp++;
+	*cq = '\0';
+	/*
+	 * boot name (optional)  xxboot, bootxx
+	 */
+	cgetstr(buf, "b0", &dp->d_boot0);
+	cgetstr(buf, "b1", &dp->d_boot1);
+
+	if (cgetstr(buf, "ty", &cq) > 0 && strcmp(cq, "removable") == 0)
+		dp->d_flags |= D_REMOVABLE;
+	else  if (cq && strcmp(cq, "simulated") == 0)
+		dp->d_flags |= D_RAMDISK;
+	if (cgetcap(buf, "sf", ':') != NULL)
+		dp->d_flags |= D_BADSECT;
+
+#define getnumdflt(field, dname, dflt) \
+        { long f; (field) = (cgetnum(buf, dname, &f) == -1) ? (dflt) : f; }
+
+	getnumdflt(dp->d_secsize, "se", DEV_BSIZE);
+	cgetnum(buf, "nt",(long *) &dp->d_ntracks);
+	cgetnum(buf, "ns",(long *) &dp->d_nsectors);
+	cgetnum(buf, "nc",(long *) &dp->d_ncylinders);
+
+	if (cgetstr(buf, "dt", &cq) > 0)
+		dp->d_type = gettype(cq, dktypenames);
+	else
+		getnumdflt(dp->d_type, "dt", 0);
+	getnumdflt(dp->d_secpercyl, "sc", dp->d_nsectors * dp->d_ntracks);
+	getnumdflt(dp->d_secperunit, "su", dp->d_secpercyl * dp->d_ncylinders);
+	getnumdflt(dp->d_rpm, "rm", 3600);
+	getnumdflt(dp->d_interleave, "il", 1);
+	getnumdflt(dp->d_trackskew, "sk", 0);
+	getnumdflt(dp->d_cylskew, "cs", 0);
+	getnumdflt(dp->d_headswitch, "hs", 0);
+	getnumdflt(dp->d_trkseek, "ts", 0);
+	getnumdflt(dp->d_bbsize, "bs", BBSIZE);
+	getnumdflt(dp->d_sbsize, "sb", SBSIZE);
+	strcpy(psize, "px");
+	strcpy(pbsize, "bx");
+	strcpy(pfsize, "fx");
+	strcpy(poffset, "ox");
+	strcpy(ptype, "tx");
+	max = 'a' - 1;
+	pp = &dp->d_partitions[0];
+	for (p = 'a'; p < 'a' + MAXPARTITIONS; p++, pp++) {
+		psize[1] = pbsize[1] = pfsize[1] = poffset[1] = ptype[1] = p;
+		if (cgetnum(buf, psize,(long *) &pp->p_size) == -1)
+			pp->p_size = 0;
+		else {
+			cgetnum(buf, poffset, (long *) &pp->p_offset);
+			getnumdflt(pp->p_fsize, pfsize, 0);
+			if (pp->p_fsize) {
+				long bsize;
+
+				if (cgetnum(buf, pbsize, &bsize) == 0)
+					pp->p_frag = bsize / pp->p_fsize;
+				else
+					pp->p_frag = 8;
+			}
+			getnumdflt(pp->p_fstype, ptype, 0);
+			if (pp->p_fstype == 0 && cgetstr(buf, ptype, &cq) > 0)
+				pp->p_fstype = gettype(cq, fstypenames);
+			max = p;
+		}
+	}
+	dp->d_npartitions = max + 1 - 'a';
+	(void)strcpy(psize, "dx");
+	dx = dp->d_drivedata;
+	for (p = '0'; p < '0' + NDDATA; p++, dx++) {
+		psize[1] = p;
+		getnumdflt(*dx, psize, 0);
+	}
+	dp->d_magic = DISKMAGIC;
+	dp->d_magic2 = DISKMAGIC;
+	free(buf);
+	return (dp);
+}
+
+static int
+gettype(t, names)
+	char *t;
+	char **names;
+{
+	register char **nm;
+
+	for (nm = names; *nm; nm++)
+		if (strcasecmp(t, *nm) == 0)
+			return (nm - names);
+	if (isdigit(*t))
+		return (atoi(t));
+	return (0);
+}
diff --git a/lib/libc/gen/drand48.c b/lib/libc/gen/drand48.c
new file mode 100644
index 0000000..cec04a6
--- /dev/null
+++ b/lib/libc/gen/drand48.c
@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 1993 Martin Birgmeier
+ * All rights reserved.
+ *
+ * You may redistribute unmodified or modified versions of this source
+ * code provided that the above copyright notice and this and the
+ * following conditions are retained.
+ *
+ * This software is provided ``as is'', and comes with no warranties
+ * of any kind. I shall in no event be liable for anything that happens
+ * to anyone/anything when using this software.
+ */
+
+#include "rand48.h"
+
+extern unsigned short _rand48_seed[3];
+
+double
+drand48(void)
+{
+	return erand48(_rand48_seed);
+}
diff --git a/lib/libc/gen/erand48.c b/lib/libc/gen/erand48.c
new file mode 100644
index 0000000..286904c
--- /dev/null
+++ b/lib/libc/gen/erand48.c
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 1993 Martin Birgmeier
+ * All rights reserved.
+ *
+ * You may redistribute unmodified or modified versions of this source
+ * code provided that the above copyright notice and this and the
+ * following conditions are retained.
+ *
+ * This software is provided ``as is'', and comes with no warranties
+ * of any kind. I shall in no event be liable for anything that happens
+ * to anyone/anything when using this software.
+ */
+
+#include "rand48.h"
+
+double
+erand48(unsigned short xseed[3])
+{
+	_dorand48(xseed);
+	return ldexp((double) xseed[0], -48) +
+	       ldexp((double) xseed[1], -32) +
+	       ldexp((double) xseed[2], -16);
+}
diff --git a/lib/libc/gen/err.3 b/lib/libc/gen/err.3
new file mode 100644
index 0000000..a80edeb
--- /dev/null
+++ b/lib/libc/gen/err.3
@@ -0,0 +1,144 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	From: @(#)err.3	8.1 (Berkeley) 6/9/93
+.\"	$Id$
+.\"
+.Dd April 13, 1995
+.Dt ERR 3
+.Os BSD 4
+.Sh NAME
+.Nm err ,
+.Nm verr ,
+.Nm errx ,
+.Nm verrx ,
+.Nm warn ,
+.Nm vwarn ,
+.Nm warnx ,
+.Nm vwarnx ,
+.Nm err_set_file ,
+.Nm err_set_exit
+.Nd formatted error messages
+.Sh SYNOPSIS
+.Fd #include <err.h>
+.Ft void
+.Fn err "int eval" "const char *fmt" "..."
+.Ft void
+.Fn verr "int eval" "const char *fmt" "va_list args"
+.Ft void
+.Fn errx "int eval" "const char *fmt" "..."
+.Ft void
+.Fn verrx "int eval" "const char *fmt" "va_list args"
+.Ft void
+.Fn warn "const char *fmt" "..."
+.Ft void
+.Fn vwarn "const char *fmt" "va_list args"
+.Ft void
+.Fn warnx "const char *fmt" "..."
+.Ft void
+.Fn vwarnx "const char *fmt" "va_list args"
+.Ft void
+.Fn err_set_file "void *fp"
+.Ft void
+.Fn err_set_exit "void (*exitf)(int)"
+.Sh DESCRIPTION
+The
+.Fn err
+and
+.Fn warn
+family of functions display a formatted error message on the standard
+error output, or on another file specified using the
+.Fn err_set_file
+function.
+In all cases, the last component of the program name, a colon character,
+and a space are output.
+If the
+.Va fmt
+argument is not NULL, the formatted error message, a colon character,
+and a space are output.
+In the case of the
+.Fn err ,
+.Fn verr ,
+.Fn warn ,
+and
+.Fn vwarn
+functions, the error message string affiliated with the current value of
+the global variable
+.Va errno 
+is output.
+In all cases, the output is followed by a newline character.
+.Pp
+The
+.Fn err ,
+.Fn verr ,
+.Fn errx ,
+and
+.Fn verrx
+functions do not return, but exit with the value of the argument
+.Fa eval .
+The
+.Fn err_set_exit
+function can be used to specify a function which is called before
+.Xr exit 2
+to perform any necessary cleanup; passing a null function pointer for
+.Va exitf
+resets the hook to do nothing.
+.Sh EXAMPLES
+Display the current errno information string and exit:
+.Bd -literal -offset indent
+if ((p = malloc(size)) == NULL)
+	err(1, NULL);
+if ((fd = open(file_name, O_RDONLY, 0)) == -1)
+	err(1, "%s", file_name);
+.Ed
+.Pp
+Display an error message and exit:
+.Bd -literal -offset indent
+if (tm.tm_hour < START_TIME)
+	errx(1, "too early, wait until %s", start_time_string);
+.Ed
+.Pp
+Warn of an error:
+.Bd -literal -offset indent
+if ((fd = open(raw_device, O_RDONLY, 0)) == -1)
+	warnx("%s: %s: trying the block device",
+	    raw_device, strerror(errno));
+if ((fd = open(block_device, O_RDONLY, 0)) == -1)
+	err(1, "%s", block_device);
+.Ed
+.Sh SEE ALSO
+.Xr strerror 3
+.Sh HISTORY
+The
+.Fn err
+and
+.Fn warn
+functions first appeared in 4.4BSD.
diff --git a/lib/libc/gen/err.c b/lib/libc/gen/err.c
new file mode 100644
index 0000000..63ef8a4
--- /dev/null
+++ b/lib/libc/gen/err.c
@@ -0,0 +1,216 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)err.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <err.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+extern char *__progname;		/* Program name, from crt0. */
+
+static FILE *err_file; /* file to use for error output */
+static void (*err_exit)(int);
+
+void
+err_set_file(void *fp)
+{
+	if (fp)
+		err_file = fp;
+	else
+		err_file = stderr;
+}
+
+void
+err_set_exit(void (*ef)(int))
+{
+	err_exit = ef;
+}
+
+__dead void
+#ifdef __STDC__
+err(int eval, const char *fmt, ...)
+#else
+err(eval, fmt, va_alist)
+	int eval;
+	const char *fmt;
+	va_dcl
+#endif
+{
+	va_list ap;
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	verr(eval, fmt, ap);
+	va_end(ap);
+}
+
+__dead void
+verr(eval, fmt, ap)
+	int eval;
+	const char *fmt;
+	va_list ap;
+{
+	int sverrno;
+
+	sverrno = errno;
+	if (! err_file)
+		err_set_file((FILE *)0);
+	(void)fprintf(err_file, "%s: ", __progname);
+	if (fmt != NULL) {
+		(void)vfprintf(err_file, fmt, ap);
+		(void)fprintf(err_file, ": ");
+	}
+	(void)fprintf(err_file, "%s\n", strerror(sverrno));
+	if(err_exit)
+		err_exit(eval);
+	exit(eval);
+}
+
+__dead void
+#if __STDC__
+errx(int eval, const char *fmt, ...)
+#else
+errx(eval, fmt, va_alist)
+	int eval;
+	const char *fmt;
+	va_dcl
+#endif
+{
+	va_list ap;
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	verrx(eval, fmt, ap);
+	va_end(ap);
+}
+
+__dead void
+verrx(eval, fmt, ap)
+	int eval;
+	const char *fmt;
+	va_list ap;
+{
+	if (! err_file)
+		err_set_file((FILE *)0);
+	(void)fprintf(err_file, "%s: ", __progname);
+	if (fmt != NULL)
+		(void)vfprintf(err_file, fmt, ap);
+	(void)fprintf(err_file, "\n");
+	if (err_exit)
+		err_exit(eval);
+	exit(eval);
+}
+
+void
+#if __STDC__
+warn(const char *fmt, ...)
+#else
+warn(fmt, va_alist)
+	const char *fmt;
+	va_dcl
+#endif
+{
+	va_list ap;
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	vwarn(fmt, ap);
+	va_end(ap);
+}
+
+void
+vwarn(fmt, ap)
+	const char *fmt;
+	va_list ap;
+{
+	int sverrno;
+
+	sverrno = errno;
+	if (! err_file)
+		err_set_file((FILE *)0);
+	(void)fprintf(err_file, "%s: ", __progname);
+	if (fmt != NULL) {
+		(void)vfprintf(err_file, fmt, ap);
+		(void)fprintf(err_file, ": ");
+	}
+	(void)fprintf(err_file, "%s\n", strerror(sverrno));
+}
+
+void
+#ifdef __STDC__
+warnx(const char *fmt, ...)
+#else
+warnx(fmt, va_alist)
+	const char *fmt;
+	va_dcl
+#endif
+{
+	va_list ap;
+#ifdef __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	vwarnx(fmt, ap);
+	va_end(ap);
+}
+
+void
+vwarnx(fmt, ap)
+	const char *fmt;
+	va_list ap;
+{
+	if (! err_file)
+		err_set_file((FILE *)0);
+	(void)fprintf(err_file, "%s: ", __progname);
+	if (fmt != NULL)
+		(void)vfprintf(err_file, fmt, ap);
+	(void)fprintf(err_file, "\n");
+}
diff --git a/lib/libc/gen/errlst.c b/lib/libc/gen/errlst.c
new file mode 100644
index 0000000..cd7e719
--- /dev/null
+++ b/lib/libc/gen/errlst.c
@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 1982, 1985, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)errlst.c	8.2 (Berkeley) 11/16/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+const char *const sys_errlist[] = {
+	"Undefined error: 0",			/*  0 - ENOERROR */
+	"Operation not permitted",		/*  1 - EPERM */
+	"No such file or directory",		/*  2 - ENOENT */
+	"No such process",			/*  3 - ESRCH */
+	"Interrupted system call",		/*  4 - EINTR */
+	"Input/output error",			/*  5 - EIO */
+	"Device not configured",		/*  6 - ENXIO */
+	"Argument list too long",		/*  7 - E2BIG */
+	"Exec format error",			/*  8 - ENOEXEC */
+	"Bad file descriptor",			/*  9 - EBADF */
+	"No child processes",			/* 10 - ECHILD */
+	"Resource deadlock avoided",		/* 11 - EDEADLK */
+	"Cannot allocate memory",		/* 12 - ENOMEM */
+	"Permission denied",			/* 13 - EACCES */
+	"Bad address",				/* 14 - EFAULT */
+	"Block device required",		/* 15 - ENOTBLK */
+	"Device busy",				/* 16 - EBUSY */
+	"File exists",				/* 17 - EEXIST */
+	"Cross-device link",			/* 18 - EXDEV */
+	"Operation not supported by device",	/* 19 - ENODEV */
+	"Not a directory",			/* 20 - ENOTDIR */
+	"Is a directory",			/* 21 - EISDIR */
+	"Invalid argument",			/* 22 - EINVAL */
+	"Too many open files in system",	/* 23 - ENFILE */
+	"Too many open files",			/* 24 - EMFILE */
+	"Inappropriate ioctl for device",	/* 25 - ENOTTY */
+	"Text file busy",			/* 26 - ETXTBSY */
+	"File too large",			/* 27 - EFBIG */
+	"No space left on device",		/* 28 - ENOSPC */
+	"Illegal seek",				/* 29 - ESPIPE */
+	"Read-only file system",		/* 30 - EROFS */
+	"Too many links",			/* 31 - EMLINK */
+	"Broken pipe",				/* 32 - EPIPE */
+
+/* math software */
+	"Numerical argument out of domain",	/* 33 - EDOM */
+	"Result too large",			/* 34 - ERANGE */
+
+/* non-blocking and interrupt i/o */
+	"Resource temporarily unavailable",	/* 35 - EAGAIN */
+						/* 35 - EWOULDBLOCK */
+	"Operation now in progress",		/* 36 - EINPROGRESS */
+	"Operation already in progress",	/* 37 - EALREADY */
+
+/* ipc/network software -- argument errors */
+	"Socket operation on non-socket",	/* 38 - ENOTSOCK */
+	"Destination address required",		/* 39 - EDESTADDRREQ */
+	"Message too long",			/* 40 - EMSGSIZE */
+	"Protocol wrong type for socket",	/* 41 - EPROTOTYPE */
+	"Protocol not available",		/* 42 - ENOPROTOOPT */
+	"Protocol not supported",		/* 43 - EPROTONOSUPPORT */
+	"Socket type not supported",		/* 44 - ESOCKTNOSUPPORT */
+	"Operation not supported",		/* 45 - EOPNOTSUPP */
+	"Protocol family not supported",	/* 46 - EPFNOSUPPORT */
+						/* 47 - EAFNOSUPPORT */
+	"Address family not supported by protocol family",
+	"Address already in use",		/* 48 - EADDRINUSE */
+	"Can't assign requested address",	/* 49 - EADDRNOTAVAIL */
+
+/* ipc/network software -- operational errors */
+	"Network is down",			/* 50 - ENETDOWN */
+	"Network is unreachable",		/* 51 - ENETUNREACH */
+	"Network dropped connection on reset",	/* 52 - ENETRESET */
+	"Software caused connection abort",	/* 53 - ECONNABORTED */
+	"Connection reset by peer",		/* 54 - ECONNRESET */
+	"No buffer space available",		/* 55 - ENOBUFS */
+	"Socket is already connected",		/* 56 - EISCONN */
+	"Socket is not connected",		/* 57 - ENOTCONN */
+	"Can't send after socket shutdown",	/* 58 - ESHUTDOWN */
+	"Too many references: can't splice",	/* 59 - ETOOMANYREFS */
+	"Operation timed out",			/* 60 - ETIMEDOUT */
+	"Connection refused",			/* 61 - ECONNREFUSED */
+
+	"Too many levels of symbolic links",	/* 62 - ELOOP */
+	"File name too long",			/* 63 - ENAMETOOLONG */
+
+/* should be rearranged */
+	"Host is down",				/* 64 - EHOSTDOWN */
+	"No route to host",			/* 65 - EHOSTUNREACH */
+	"Directory not empty",			/* 66 - ENOTEMPTY */
+
+/* quotas & mush */
+	"Too many processes",			/* 67 - EPROCLIM */
+	"Too many users",			/* 68 - EUSERS */
+	"Disc quota exceeded",			/* 69 - EDQUOT */
+
+/* Network File System */
+	"Stale NFS file handle",		/* 70 - ESTALE */
+	"Too many levels of remote in path",	/* 71 - EREMOTE */
+	"RPC struct is bad",			/* 72 - EBADRPC */
+	"RPC version wrong",			/* 73 - ERPCMISMATCH */
+	"RPC prog. not avail",			/* 74 - EPROGUNAVAIL */
+	"Program version wrong",		/* 75 - EPROGMISMATCH */
+	"Bad procedure for program",		/* 76 - EPROCUNAVAIL */
+
+	"No locks available",			/* 77 - ENOLCK */
+	"Function not implemented",		/* 78 - ENOSYS */
+	"Inappropriate file type or format",	/* 79 - EFTYPE */
+};
+int errno;
+const int sys_nerr = sizeof(sys_errlist) / sizeof(sys_errlist[0]);
diff --git a/lib/libc/gen/exec.3 b/lib/libc/gen/exec.3
new file mode 100644
index 0000000..3438bec
--- /dev/null
+++ b/lib/libc/gen/exec.3
@@ -0,0 +1,258 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)exec.3	8.3 (Berkeley) 1/24/94
+.\"
+.Dd January 24, 1994
+.Dt EXEC 3
+.Os
+.Sh NAME
+.Nm execl ,
+.Nm execlp ,
+.Nm execle ,
+.Nm exect ,
+.Nm execv ,
+.Nm execvp
+.Nd execute a file
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Vt extern char **environ;
+.Ft int
+.Fn execl "const char *path" "const char *arg" ...
+.Ft int
+.Fn execlp "const char *file" "const char *arg" ...
+.Ft int
+.Fn execle "const char *path" "const char *arg" ... "char *const envp[]"
+.Ft int
+.Fn exect "const char *path" "char *const argv[]"  "char *const envp[]"
+.Ft int
+.Fn execv "const char *path" "char *const argv[]"
+.Ft int
+.Fn execvp "const char *file" "char *const argv[]"
+.Sh DESCRIPTION
+The
+.Nm exec
+family of functions replaces the current process image with a
+new process image.
+The functions described in this manual page are front-ends for the function
+.Xr execve 2 .
+(See the manual page for
+.Xr execve
+for detailed information about the replacement of the current process.)
+.Pp
+The initial argument for these functions is the pathname of a file which
+is to be executed.
+.Pp
+The
+.Fa "const char *arg"
+and subsequent ellipses in the
+.Fn execl ,
+.Fn execlp ,
+and
+.Fn execle
+functions can be thought of as
+.Em arg0 ,
+.Em arg1 ,
+\&...,
+.Em argn .
+Together they describe a list of one or more pointers to null-terminated
+strings that represent the argument list available to the executed program.
+The first argument, by convention, should point to the file name associated
+with the file being executed.
+The list of arguments
+.Em must
+be terminated by a
+.Dv NULL
+pointer.
+.Pp
+The
+.Fn exect ,
+.Fn execv ,
+and
+.Fn execvp
+functions provide an array of pointers to null-terminated strings that
+represent the argument list available to the new program.
+The first argument, by convention, should point to the file name associated
+with the file begin executed.
+The array of pointers
+.Sy must
+be terminated by a
+.Dv NULL
+pointer.
+.Pp
+The
+.Fn execle
+and
+.Fn exect
+functions also specify the environment of the executed process by following
+the
+.Dv NULL
+pointer that terminates the list of arguments in the parameter list
+or the pointer to the argv array with an additional parameter.
+This additional parameter is an array of pointers to null-terminated strings
+and
+.Em must
+be terminated by a
+.Dv NULL
+pointer.
+The other functions take the environment for the new process image from the
+external variable
+.Va environ
+in the current process.
+.Pp
+Some of these functions have special semantics.
+.Pp
+The functions
+.Fn execlp
+and
+.Fn execvp
+will duplicate the actions of the shell in searching for an executable file
+if the specified file name does not contain a slash
+.Dq Li /
+character.
+The search path is the path specified in the environment by
+.Dq Ev PATH
+variable.
+If this variable isn't specified, the default path
+.Dq Ev /bin:/usr/bin:
+is
+used.
+In addition, certain errors are treated specially.
+.Pp
+If permission is denied for a file (the attempted
+.Xr execve
+returned
+.Er EACCES ) ,
+these functions will continue searching the rest of
+the search path.
+If no other file is found, however, they will return with the global variable
+.Va errno
+set to
+.Er EACCES .
+.Pp
+If the header of a file isn't recognized (the attempted
+.Xr execve
+returned
+.Er ENOEXEC ) ,
+these functions will execute the shell with the path of
+the file as its first argument.
+(If this attempt fails, no further searching is done.)
+.Pp
+If the file is currently busy (the attempted
+.Xr execve
+returned
+.Er ETXTBUSY ) ,
+these functions will sleep for several seconds,
+periodically re-attempting to execute the file.
+.Pp
+The function
+.Fn exect
+executes a file with the program tracing facilities enabled (see
+.Xr ptrace 2 ) .
+.Sh RETURN VALUES
+If any of the
+.Xr exec
+functions returns, an error will have occurred.
+The return value is \-1, and the global variable
+.Va errno
+will be set to indicate the error.
+.Sh FILES
+.Bl -tag -width /bin/sh - compact
+.It Pa /bin/sh
+The shell.
+.El
+.Sh ERRORS
+.Fn Execl ,
+.Fn execle ,
+.Fn execlp
+and
+.Fn execvp
+may fail and set
+.Va errno
+for any of the errors specified for the library functions
+.Xr execve 2
+and
+.Xr malloc 3 .
+.Pp
+.Fn Exect
+and
+.Fn execv
+may fail and set
+.Va errno
+for any of the errors specified for the library function
+.Xr execve 2 .
+.Sh SEE ALSO
+.Xr sh 1 ,
+.Xr execve 2 ,
+.Xr fork 2 ,
+.Xr trace 2 ,
+.Xr environ 7 ,
+.Xr ptrace 2 ,
+.Xr environ 7 ,
+.Sh COMPATIBILITY
+Historically, the default path for the
+.Fn execlp
+and
+.Fn execvp
+functions was
+.Dq Pa :/bin:/usr/bin .
+This was changed to place the current directory last to enhance system
+security.
+.Pp
+The behavior of
+.Fn execlp
+and
+.Fn execvp
+when errors occur while attempting to execute the file is historic
+practice, but has not traditionally been documented and is not specified
+by the
+.Tn POSIX
+standard.
+.Pp
+Traditionally, the functions
+.Fn execlp
+and
+.Fn execvp
+ignored all errors except for the ones described above and
+.Er ENOMEM
+and
+.Er E2BIG ,
+upon which they returned.
+They now return if any error other than the ones described above occurs.
+.Sh STANDARDS
+.Fn Execl ,
+.Fn execv ,
+.Fn execle ,
+.Fn execlp
+and
+.Fn execvp
+conform to
+.St -p1003.1-88 .
diff --git a/lib/libc/gen/exec.c b/lib/libc/gen/exec.c
new file mode 100644
index 0000000..6af8868
--- /dev/null
+++ b/lib/libc/gen/exec.c
@@ -0,0 +1,269 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)exec.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <paths.h>
+
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+extern char **environ;
+
+static char **
+buildargv(ap, arg, envpp)
+	va_list ap;
+	const char *arg;
+	char ***envpp;
+{
+	register char **argv, **nargv;
+	register int memsize, off;
+
+	argv = NULL;
+	for (off = memsize = 0;; ++off) {
+		if (off >= memsize) {
+			memsize += 50;	/* Starts out at 0. */
+			memsize *= 2;	/* Ramp up fast. */
+			nargv = realloc(argv, memsize * sizeof(char *));
+			if (nargv == NULL) {
+				free(argv);
+				return (NULL);
+			}
+			argv = nargv;
+			if (off == 0) {
+				argv[0] = (char *)arg;
+				off = 1;
+			}
+		}
+		if (!(argv[off] = va_arg(ap, char *)))
+			break;
+	}
+	/* Get environment pointer if user supposed to provide one. */
+	if (envpp)
+		*envpp = va_arg(ap, char **);
+	return (argv);
+}
+
+int
+#if __STDC__
+execl(const char *name, const char *arg, ...)
+#else
+execl(name, arg, va_alist)
+	const char *name;
+	const char *arg;
+	va_dcl
+#endif
+{
+	va_list ap;
+	int sverrno;
+	char **argv;
+
+#if __STDC__
+	va_start(ap, arg);
+#else
+	va_start(ap);
+#endif
+	if (argv = buildargv(ap, arg, NULL))
+		(void)execve(name, argv, environ);
+	va_end(ap);
+	sverrno = errno;
+	free(argv);
+	errno = sverrno;
+	return (-1);
+}
+
+int
+#if __STDC__
+execle(const char *name, const char *arg, ...)
+#else
+execle(name, arg, va_alist)
+	const char *name;
+	const char *arg;
+	va_dcl
+#endif
+{
+	va_list ap;
+	int sverrno;
+	char **argv, **envp;
+
+#if __STDC__
+	va_start(ap, arg);
+#else
+	va_start(ap);
+#endif
+	if (argv = buildargv(ap, arg, &envp))
+		(void)execve(name, argv, envp);
+	va_end(ap);
+	sverrno = errno;
+	free(argv);
+	errno = sverrno;
+	return (-1);
+}
+
+int
+#if __STDC__
+execlp(const char *name, const char *arg, ...)
+#else
+execlp(name, arg, va_alist)
+	const char *name;
+	const char *arg;
+	va_dcl
+#endif
+{
+	va_list ap;
+	int sverrno;
+	char **argv;
+
+#if __STDC__
+	va_start(ap, arg);
+#else
+	va_start(ap);
+#endif
+	if (argv = buildargv(ap, arg, NULL))
+		(void)execvp(name, argv);
+	va_end(ap);
+	sverrno = errno;
+	free(argv);
+	errno = sverrno;
+	return (-1);
+}
+
+int
+execv(name, argv)
+	const char *name;
+	char * const *argv;
+{
+	(void)execve(name, argv, environ);
+	return (-1);
+}
+
+int
+execvp(name, argv)
+	const char *name;
+	char * const *argv;
+{
+	char **memp;
+	register int cnt, lp, ln;
+	register char *p;
+	int eacces, etxtbsy;
+	char *bp, *cur, *path, buf[MAXPATHLEN];
+
+	/* If it's an absolute or relative path name, it's easy. */
+	if (index(name, '/')) {
+		bp = (char *)name;
+		cur = path = NULL;
+		goto retry;
+	}
+	bp = buf;
+
+	/* Get the path we're searching. */
+	if (!(path = getenv("PATH")))
+		path = _PATH_DEFPATH;
+	cur = path = strdup(path);
+
+	eacces = etxtbsy = 0;
+	while (p = strsep(&cur, ":")) {
+		/*
+		 * It's a SHELL path -- double, leading and trailing colons
+		 * mean the current directory.
+		 */
+		if (!*p) {
+			p = ".";
+			lp = 1;
+		} else
+			lp = strlen(p);
+		ln = strlen(name);
+
+		/*
+		 * If the path is too long complain.  This is a possible
+		 * security issue; given a way to make the path too long
+		 * the user may execute the wrong program.
+		 */
+		if (lp + ln + 2 > sizeof(buf)) {
+			(void)write(STDERR_FILENO, "execvp: ", 8);
+			(void)write(STDERR_FILENO, p, lp);
+			(void)write(STDERR_FILENO, ": path too long\n", 16);
+			continue;
+		}
+		bcopy(p, buf, lp);
+		buf[lp] = '/';
+		bcopy(name, buf + lp + 1, ln);
+		buf[lp + ln + 1] = '\0';
+
+retry:		(void)execve(bp, argv, environ);
+		switch(errno) {
+		case EACCES:
+			eacces = 1;
+			break;
+		case ENOENT:
+			break;
+		case ENOEXEC:
+			for (cnt = 0; argv[cnt]; ++cnt)
+				;
+			memp = malloc((cnt + 2) * sizeof(char *));
+			if (memp == NULL)
+				goto done;
+			memp[0] = "sh";
+			memp[1] = bp;
+			bcopy(argv + 1, memp + 2, cnt * sizeof(char *));
+			(void)execve(_PATH_BSHELL, memp, environ);
+			free(memp);
+			goto done;
+		case ETXTBSY:
+			if (etxtbsy < 3)
+				(void)sleep(++etxtbsy);
+			goto retry;
+		default:
+			goto done;
+		}
+	}
+	if (eacces)
+		errno = EACCES;
+	else if (!errno)
+		errno = ENOENT;
+done:	if (path)
+		free(path);
+	return (-1);
+}
diff --git a/lib/libc/gen/fnmatch.3 b/lib/libc/gen/fnmatch.3
new file mode 100644
index 0000000..5d5dfd5
--- /dev/null
+++ b/lib/libc/gen/fnmatch.3
@@ -0,0 +1,127 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Guido van Rossum.
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)fnmatch.3	8.2 (Berkeley) 4/16/94
+.\"
+.Dd April 16, 1994
+.Dt FNMATCH 3
+.Os
+.Sh NAME
+.Nm fnmatch
+.Nd match filename or pathname
+.Sh SYNOPSIS
+.Fd #include <fnmatch.h>
+.Ft int
+.Fn fnmatch "const char *pattern" "const char *string" "int flags"
+.Sh DESCRIPTION
+The
+.Fn fnmatch
+function
+matches patterns according to the rules used by the shell.
+It checks the string specified by the
+.Fa string
+argument to see if it matches the pattern specified by the
+.Fa pattern
+argument.
+.Pp
+The
+.Fa flags
+argument modifies the interpretation of
+.Fa pattern
+and
+.Fa string .
+The value of
+.Fa flags
+is the bitwise inclusive
+.Tn OR
+of any of the following
+constants, which are defined in the include file
+.Pa fnmatch.h .
+.Bl -tag -width FNM_PATHNAME
+.It Dv FNM_NOESCAPE
+Normally, every occurrence of a backslash
+.Pq Ql \e
+followed by a character in
+.Fa pattern
+is replaced by that character.
+This is done to negate any special meaning for the character.
+If the
+.Dv FNM_NOESCAPE
+flag is set, a backslash character is treated as an ordinary character.
+.It Dv FNM_PATHNAME
+Slash characters in
+.Fa string
+must be explicitly matched by slashes in
+.Fa pattern .
+If this flag is not set, then slashes are treated as regular characters.
+.It Dv FNM_PERIOD
+Leading periods in strings match periods in patterns.
+The definition of ``leading'' is related to the specification of
+.Dv FNM_PATHNAME.
+A period is always ``leading'' if it is the first character in
+.Ar string .
+Additionally, if
+.Dv FNM_PATHNAME
+is set,
+a period is ``leading'' if it immediately follows a slash.
+.El
+.Sh RETURN VALUES
+The
+.Fn fnmatch
+function returns zero if
+.Fa string
+matches the pattern specified by
+.Fa pattern ,
+otherwise, it returns the value
+.Dv FNM_NOMATCH .
+.Sh SEE ALSO
+.Xr sh 1 ,
+.Xr glob 3 ,
+.Xr regex 3 ,
+.Xr wordexp 3
+.Sh STANDARDS
+The
+.Fn fnmatch
+function conforms to
+.St -p1003.2 .
+.Sh HISTORY
+The
+.Fn fnmatch
+function first appeared in 
+.Bx 4.4 .
+.Sh BUGS
+The pattern
+.Ql *
+matches the empty string, even if
+.Dv FNM_PATHNAME
+is specified.
diff --git a/lib/libc/gen/fnmatch.c b/lib/libc/gen/fnmatch.c
new file mode 100644
index 0000000..0c2ca13
--- /dev/null
+++ b/lib/libc/gen/fnmatch.c
@@ -0,0 +1,171 @@
+/*
+ * Copyright (c) 1989, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Guido van Rossum.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fnmatch.c	8.2 (Berkeley) 4/16/94";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Function fnmatch() as specified in POSIX 1003.2-1992, section B.6.
+ * Compares a filename or pathname to a pattern.
+ */
+
+#include <fnmatch.h>
+#include <string.h>
+
+#define	EOS	'\0'
+
+static const char *rangematch __P((const char *, int, int));
+
+int
+fnmatch(pattern, string, flags)
+	const char *pattern, *string;
+	int flags;
+{
+	const char *stringstart;
+	char c, test;
+
+	for (stringstart = string;;)
+		switch (c = *pattern++) {
+		case EOS:
+			return (*string == EOS ? 0 : FNM_NOMATCH);
+		case '?':
+			if (*string == EOS)
+				return (FNM_NOMATCH);
+			if (*string == '/' && (flags & FNM_PATHNAME))
+				return (FNM_NOMATCH);
+			if (*string == '.' && (flags & FNM_PERIOD) &&
+			    (string == stringstart ||
+			    ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
+				return (FNM_NOMATCH);
+			++string;
+			break;
+		case '*':
+			c = *pattern;
+			/* Collapse multiple stars. */
+			while (c == '*')
+				c = *++pattern;
+
+			if (*string == '.' && (flags & FNM_PERIOD) &&
+			    (string == stringstart ||
+			    ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
+				return (FNM_NOMATCH);
+
+			/* Optimize for pattern with * at end or before /. */
+			if (c == EOS)
+				if (flags & FNM_PATHNAME)
+					return (strchr(string, '/') == NULL ?
+					    0 : FNM_NOMATCH);
+				else
+					return (0);
+			else if (c == '/' && flags & FNM_PATHNAME) {
+				if ((string = strchr(string, '/')) == NULL)
+					return (FNM_NOMATCH);
+				break;
+			}
+
+			/* General case, use recursion. */
+			while ((test = *string) != EOS) {
+				if (!fnmatch(pattern, string, flags & ~FNM_PERIOD))
+					return (0);
+				if (test == '/' && flags & FNM_PATHNAME)
+					break;
+				++string;
+			}
+			return (FNM_NOMATCH);
+		case '[':
+			if (*string == EOS)
+				return (FNM_NOMATCH);
+			if (*string == '/' && flags & FNM_PATHNAME)
+				return (FNM_NOMATCH);
+			if ((pattern =
+			    rangematch(pattern, *string, flags)) == NULL)
+				return (FNM_NOMATCH);
+			++string;
+			break;
+		case '\\':
+			if (!(flags & FNM_NOESCAPE)) {
+				if ((c = *pattern++) == EOS) {
+					c = '\\';
+					--pattern;
+				}
+			}
+			/* FALLTHROUGH */
+		default:
+			if (c != *string++)
+				return (FNM_NOMATCH);
+			break;
+		}
+	/* NOTREACHED */
+}
+
+static const char *
+rangematch(pattern, test, flags)
+	const char *pattern;
+	int test, flags;
+{
+	int negate, ok;
+	char c, c2;
+
+	/*
+	 * A bracket expression starting with an unquoted circumflex
+	 * character produces unspecified results (IEEE 1003.2-1992,
+	 * 3.13.2).  This implementation treats it like '!', for
+	 * consistency with the regular expression syntax.
+	 * J.T. Conklin (conklin@ngai.kaleida.com)
+	 */
+	if (negate = (*pattern == '!' || *pattern == '^'))
+		++pattern;
+
+	for (ok = 0; (c = *pattern++) != ']';) {
+		if (c == '\\' && !(flags & FNM_NOESCAPE))
+			c = *pattern++;
+		if (c == EOS)
+			return (NULL);
+		if (*pattern == '-'
+		    && (c2 = *(pattern+1)) != EOS && c2 != ']') {
+			pattern += 2;
+			if (c2 == '\\' && !(flags & FNM_NOESCAPE))
+				c2 = *pattern++;
+			if (c2 == EOS)
+				return (NULL);
+			if (c <= test && test <= c2)
+				ok = 1;
+		} else if (c == test)
+			ok = 1;
+	}
+	return (ok == negate ? NULL : pattern);
+}
diff --git a/lib/libc/gen/frexp.3 b/lib/libc/gen/frexp.3
new file mode 100644
index 0000000..574efa3
--- /dev/null
+++ b/lib/libc/gen/frexp.3
@@ -0,0 +1,85 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)frexp.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt FREXP 3
+.Os
+.Sh NAME
+.Nm frexp
+.Nd convert floating-point number to fractional and integral components
+.Sh SYNOPSIS
+.Fd #include <math.h>
+.Ft double
+.Fn frexp "double value" "int *exp"
+.Sh DESCRIPTION
+The
+.Fn frexp
+function breaks a floating-point number into a normalized
+fraction and an integral power of 2.
+It stores the integer in the
+.Em int
+object pointed to by
+.Fa exp .
+.Sh RETURN VALUES
+The
+.Fn frexp
+function returns the value
+.Em x ,
+such that
+.Em x
+is a 
+.Em double
+with magnitude in the interval
+.Bq 1/2 , 1
+or zero, and
+.Fa value
+equals
+.Em x
+times 2 raised to the power
+.Fa *exp .
+If
+.Fa value
+is zero, both parts of the result are zero. 
+.Sh SEE ALSO
+.Xr ldexp 3 ,
+.Xr modf 3 ,
+.Xr math 3
+.Sh STANDARDS
+The
+.Fn frexp
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/gen/fstab.c b/lib/libc/gen/fstab.c
new file mode 100644
index 0000000..a526068
--- /dev/null
+++ b/lib/libc/gen/fstab.c
@@ -0,0 +1,227 @@
+/*
+ * Copyright (c) 1980, 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fstab.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <errno.h>
+#include <fstab.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static FILE *_fs_fp;
+static struct fstab _fs_fstab;
+static int LineNo = 0;
+
+static void error __P((int));
+static int fstabscan __P((void));
+
+static int
+fstabscan()
+{
+	char *cp, *p;
+#define	MAXLINELENGTH	1024
+	static char line[MAXLINELENGTH];
+	char subline[MAXLINELENGTH];
+	int typexx;
+
+	for (;;) {
+
+		if (!(p = fgets(line, sizeof(line), _fs_fp)))
+			return(0);
+/* OLD_STYLE_FSTAB */
+		++LineNo;
+		if (*line == '#' || *line == '\n')
+			continue;
+		if (!strpbrk(p, " \t")) {
+			_fs_fstab.fs_spec = strsep(&p, ":\n");
+			_fs_fstab.fs_file = strsep(&p, ":\n");
+			_fs_fstab.fs_type = strsep(&p, ":\n");
+			if (_fs_fstab.fs_type) {
+				if (!strcmp(_fs_fstab.fs_type, FSTAB_XX))
+					continue;
+				_fs_fstab.fs_mntops = _fs_fstab.fs_type;
+				_fs_fstab.fs_vfstype =
+				    strcmp(_fs_fstab.fs_type, FSTAB_SW) ?
+				    "ufs" : "swap";
+				if ((cp = strsep(&p, ":\n")) != NULL) {
+					_fs_fstab.fs_freq = atoi(cp);
+					if ((cp = strsep(&p, ":\n")) != NULL) {
+						_fs_fstab.fs_passno = atoi(cp);
+						return(1);
+					}
+				}
+			}
+			goto bad;
+		}
+/* OLD_STYLE_FSTAB */
+		while ((cp = strsep(&p, " \t\n")) != NULL && *cp == '\0')
+			;
+		_fs_fstab.fs_spec = cp;
+		if (!_fs_fstab.fs_spec || *_fs_fstab.fs_spec == '#')
+			continue;
+		while ((cp = strsep(&p, " \t\n")) != NULL && *cp == '\0')
+			;
+		_fs_fstab.fs_file = cp;
+		while ((cp = strsep(&p, " \t\n")) != NULL && *cp == '\0')
+			;
+		_fs_fstab.fs_vfstype = cp;
+		while ((cp = strsep(&p, " \t\n")) != NULL && *cp == '\0')
+			;
+		_fs_fstab.fs_mntops = cp;
+		if (_fs_fstab.fs_mntops == NULL)
+			goto bad;
+		_fs_fstab.fs_freq = 0;
+		_fs_fstab.fs_passno = 0;
+		while ((cp = strsep(&p, " \t\n")) != NULL && *cp == '\0')
+			;
+		if (cp != NULL) {
+			_fs_fstab.fs_freq = atoi(cp);
+			while ((cp = strsep(&p, " \t\n")) != NULL && *cp == '\0')
+				;
+			if (cp != NULL)
+				_fs_fstab.fs_passno = atoi(cp);
+		}
+		strcpy(subline, _fs_fstab.fs_mntops);
+		p = subline;
+		for (typexx = 0, cp = strsep(&p, ","); cp;
+		     cp = strsep(&p, ",")) {
+			if (strlen(cp) != 2)
+				continue;
+			if (!strcmp(cp, FSTAB_RW)) {
+				_fs_fstab.fs_type = FSTAB_RW;
+				break;
+			}
+			if (!strcmp(cp, FSTAB_RQ)) {
+				_fs_fstab.fs_type = FSTAB_RQ;
+				break;
+			}
+			if (!strcmp(cp, FSTAB_RO)) {
+				_fs_fstab.fs_type = FSTAB_RO;
+				break;
+			}
+			if (!strcmp(cp, FSTAB_SW)) {
+				_fs_fstab.fs_type = FSTAB_SW;
+				break;
+			}
+			if (!strcmp(cp, FSTAB_XX)) {
+				_fs_fstab.fs_type = FSTAB_XX;
+				typexx++;
+				break;
+			}
+		}
+		if (typexx)
+			continue;
+		if (cp != NULL)
+			return(1);
+
+bad:		/* no way to distinguish between EOF and syntax error */
+		error(EFTYPE);
+	}
+	/* NOTREACHED */
+}
+
+struct fstab *
+getfsent()
+{
+	if ((!_fs_fp && !setfsent()) || !fstabscan())
+		return((struct fstab *)NULL);
+	return(&_fs_fstab);
+}
+
+struct fstab *
+getfsspec(name)
+	register const char *name;
+{
+	if (setfsent())
+		while (fstabscan())
+			if (!strcmp(_fs_fstab.fs_spec, name))
+				return(&_fs_fstab);
+	return((struct fstab *)NULL);
+}
+
+struct fstab *
+getfsfile(name)
+	register const char *name;
+{
+	if (setfsent())
+		while (fstabscan())
+			if (!strcmp(_fs_fstab.fs_file, name))
+				return(&_fs_fstab);
+	return((struct fstab *)NULL);
+}
+
+int 
+setfsent()
+{
+	if (_fs_fp) {
+		rewind(_fs_fp);
+		LineNo = 0;
+		return(1);
+	}
+	if ((_fs_fp = fopen(_PATH_FSTAB, "r")) != NULL) {
+		LineNo = 0;
+		return(1);
+	}
+	error(errno);
+	return(0);
+}
+
+void
+endfsent()
+{
+	if (_fs_fp) {
+		(void)fclose(_fs_fp);
+		_fs_fp = NULL;
+	}
+}
+
+static void
+error(err)
+	int err;
+{
+	char *p;
+	char num[30];
+
+	(void)write(STDERR_FILENO, "fstab: ", 7);
+	(void)write(STDERR_FILENO, _PATH_FSTAB, sizeof(_PATH_FSTAB) - 1);
+	(void)write(STDERR_FILENO, ":", 1);
+	sprintf(num, "%d: ", LineNo);
+	(void)write(STDERR_FILENO, num, strlen(num));
+	p = strerror(err);
+	(void)write(STDERR_FILENO, p, strlen(p));
+	(void)write(STDERR_FILENO, "\n", 1);
+}
diff --git a/lib/libc/gen/ftok.3 b/lib/libc/gen/ftok.3
new file mode 100644
index 0000000..9b25bf2
--- /dev/null
+++ b/lib/libc/gen/ftok.3
@@ -0,0 +1,88 @@
+.\" Copyright (c) 1994 SigmaSoft, Th. Lockert <tholo@sigmasoft.com>
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. The name of the author may not be used to endorse or promote products
+.\"    derived from this software without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+.\" PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+.\" OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+.\" WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+.\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+.\" ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.\"	$Id: ftok.3,v 1.1 1994/06/26 16:24:57 jtc Exp $
+.Dd June 24, 1994
+.Os
+.Dt ftok 3
+.Sh NAME
+.Nm ftok
+.Nd create IPC indentifier from path name
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/ipc.h>
+.Ft key_t
+.Fn ftok "const char *path" "char id" ;
+.Sh DESCRIPTION
+.Bf -symbolic
+This function is available from the compatibility library, libcompat.
+.Ef
+The
+.Fn ftok
+function attempts to create a unique key suitable for use with the
+.Xr msgget 2 ,
+.Xr semget 2
+and
+.Xr shmget 2
+functions given the
+.Fa path
+of an existing file and a user-selectable
+.Fa id .
+.Pp
+The specified
+.Fa path
+must specify an existing file that is accessible to the calling process
+or the call will fail.  Also, note that links to files will return the
+same key, given the same
+.Fa id .
+.Sh RETURN VALUES
+The
+.Fn ftok
+function will return -1 if
+.Fa path
+does not exist or if it cannot be accessed by the calling process.
+.Sh SEE ALSO
+.Xr msgget 2 ,
+.Xr semget 2 ,
+.Xr shmget 2
+.Sh HISTORY
+The
+.Fn ftok
+function originate with System V and is typically used by programs
+that use the System V IPC routines.
+.Sh AUTHOR
+.Bl -tag
+Thorsten Lockert <tholo@sigmasoft.com>
+.El
+.Sh BUGS
+The returned key is computed based on the device and inode of the
+specified
+.Fa path
+in combination with the given
+.Fa id .
+Thus is is quite possible for the routine to return duplicate keys
+given that those fields are not 8- and 16-bit quantities like they
+were on System V based systems where this library routine's ancestor
+were originally created.
diff --git a/lib/libc/gen/ftok.c b/lib/libc/gen/ftok.c
new file mode 100644
index 0000000..8861509
--- /dev/null
+++ b/lib/libc/gen/ftok.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 1994 SigmaSoft, Th. Lockert <tholo@sigmasoft.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char *rcsid = "$Id: ftok.c,v 1.2 1994/06/26 16:27:34 jtc Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ipc.h>
+
+key_t
+ftok(path, id)
+	const char *path;
+	char id;
+{
+	struct stat st;
+
+	if (stat(path, &st) < 0)
+		return (key_t)-1;
+
+	return (key_t) (id << 24 | (st.st_dev & 0xff) << 16 | (st.st_ino & 0xffff));
+}
diff --git a/lib/libc/gen/fts-compat.c b/lib/libc/gen/fts-compat.c
new file mode 100644
index 0000000..3915b00
--- /dev/null
+++ b/lib/libc/gen/fts-compat.c
@@ -0,0 +1,971 @@
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fts.c	8.4 (Berkeley) 4/16/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <fts.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static FTSENT	*fts_alloc __P((FTS *, char *, int));
+static FTSENT	*fts_build __P((FTS *, int));
+static void	 fts_lfree __P((FTSENT *));
+static void	 fts_load __P((FTS *, FTSENT *));
+static size_t	 fts_maxarglen __P((char * const *));
+static void	 fts_padjust __P((FTS *, void *));
+static int	 fts_palloc __P((FTS *, size_t));
+static FTSENT	*fts_sort __P((FTS *, FTSENT *, int));
+static u_short	 fts_stat __P((FTS *, FTSENT *, int));
+
+#define	ISDOT(a)	(a[0] == '.' && (!a[1] || a[1] == '.' && !a[2]))
+
+#define	ISSET(opt)	(sp->fts_options & opt)
+#define	SET(opt)	(sp->fts_options |= opt)
+
+#define	CHDIR(sp, path)	(!ISSET(FTS_NOCHDIR) && chdir(path))
+#define	FCHDIR(sp, fd)	(!ISSET(FTS_NOCHDIR) && fchdir(fd))
+
+/* fts_build flags */
+#define	BCHILD		1		/* fts_children */
+#define	BNAMES		2		/* fts_children, names only */
+#define	BREAD		3		/* fts_read */
+
+FTS *
+fts_open(argv, options, compar)
+	char * const *argv;
+	register int options;
+	int (*compar)();
+{
+	register FTS *sp;
+	register FTSENT *p, *root;
+	register int nitems;
+	FTSENT *parent, *tmp;
+	int len;
+
+	/* Options check. */
+	if (options & ~FTS_OPTIONMASK) {
+		errno = EINVAL;
+		return (NULL);
+	}
+
+	/* Allocate/initialize the stream */
+	if ((sp = malloc((u_int)sizeof(FTS))) == NULL)
+		return (NULL);
+	memset(sp, 0, sizeof(FTS));
+	sp->fts_compar = compar;
+	sp->fts_options = options;
+
+	/* Logical walks turn on NOCHDIR; symbolic links are too hard. */
+	if (ISSET(FTS_LOGICAL))
+		SET(FTS_NOCHDIR);
+
+	/*
+	 * Start out with 1K of path space, and enough, in any case,
+	 * to hold the user's paths.
+	 */
+	if (fts_palloc(sp, MAX(fts_maxarglen(argv), MAXPATHLEN)))
+		goto mem1;
+
+	/* Allocate/initialize root's parent. */
+	if ((parent = fts_alloc(sp, "", 0)) == NULL)
+		goto mem2;
+	parent->fts_level = FTS_ROOTPARENTLEVEL;
+
+	/* Allocate/initialize root(s). */
+	for (root = NULL, nitems = 0; *argv; ++argv, ++nitems) {
+		/* Don't allow zero-length paths. */
+		if ((len = strlen(*argv)) == 0) {
+			errno = ENOENT;
+			goto mem3;
+		}
+
+		p = fts_alloc(sp, *argv, len);
+		p->fts_level = FTS_ROOTLEVEL;
+		p->fts_parent = parent;
+		p->fts_accpath = p->fts_name;
+		p->fts_info = fts_stat(sp, p, ISSET(FTS_COMFOLLOW));
+
+		/* Command-line "." and ".." are real directories. */
+		if (p->fts_info == FTS_DOT)
+			p->fts_info = FTS_D;
+
+		/*
+		 * If comparison routine supplied, traverse in sorted
+		 * order; otherwise traverse in the order specified.
+		 */
+		if (compar) {
+			p->fts_link = root;
+			root = p;
+		} else {
+			p->fts_link = NULL;
+			if (root == NULL)
+				tmp = root = p;
+			else {
+				tmp->fts_link = p;
+				tmp = p;
+			}
+		}
+	}
+	if (compar && nitems > 1)
+		root = fts_sort(sp, root, nitems);
+
+	/*
+	 * Allocate a dummy pointer and make fts_read think that we've just
+	 * finished the node before the root(s); set p->fts_info to FTS_INIT
+	 * so that everything about the "current" node is ignored.
+	 */
+	if ((sp->fts_cur = fts_alloc(sp, "", 0)) == NULL)
+		goto mem3;
+	sp->fts_cur->fts_link = root;
+	sp->fts_cur->fts_info = FTS_INIT;
+
+	/*
+	 * If using chdir(2), grab a file descriptor pointing to dot to insure
+	 * that we can get back here; this could be avoided for some paths,
+	 * but almost certainly not worth the effort.  Slashes, symbolic links,
+	 * and ".." are all fairly nasty problems.  Note, if we can't get the
+	 * descriptor we run anyway, just more slowly.
+	 */
+	if (!ISSET(FTS_NOCHDIR) && (sp->fts_rfd = open(".", O_RDONLY, 0)) < 0)
+		SET(FTS_NOCHDIR);
+
+	return (sp);
+
+mem3:	fts_lfree(root);
+	free(parent);
+mem2:	free(sp->fts_path);
+mem1:	free(sp);
+	return (NULL);
+}
+
+static void
+fts_load(sp, p)
+	FTS *sp;
+	register FTSENT *p;
+{
+	register int len;
+	register char *cp;
+
+	/*
+	 * Load the stream structure for the next traversal.  Since we don't
+	 * actually enter the directory until after the preorder visit, set
+	 * the fts_accpath field specially so the chdir gets done to the right
+	 * place and the user can access the first node.  From fts_open it's
+	 * known that the path will fit.
+	 */
+	len = p->fts_pathlen = p->fts_namelen;
+	memmove(sp->fts_path, p->fts_name, len + 1);
+	if ((cp = strrchr(p->fts_name, '/')) && (cp != p->fts_name || cp[1])) {
+		len = strlen(++cp);
+		memmove(p->fts_name, cp, len + 1);
+		p->fts_namelen = len;
+	}
+	p->fts_accpath = p->fts_path = sp->fts_path;
+	sp->fts_dev = p->fts_dev;
+}
+
+int
+fts_close(sp)
+	FTS *sp;
+{
+	register FTSENT *freep, *p;
+	int saved_errno;
+
+	/*
+	 * This still works if we haven't read anything -- the dummy structure
+	 * points to the root list, so we step through to the end of the root
+	 * list which has a valid parent pointer.
+	 */
+	if (sp->fts_cur) {
+		for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) {
+			freep = p;
+			p = p->fts_link ? p->fts_link : p->fts_parent;
+			free(freep);
+		}
+		free(p);
+	}
+
+	/* Free up child linked list, sort array, path buffer. */
+	if (sp->fts_child)
+		fts_lfree(sp->fts_child);
+	if (sp->fts_array)
+		free(sp->fts_array);
+	free(sp->fts_path);
+
+	/* Return to original directory, save errno if necessary. */
+	if (!ISSET(FTS_NOCHDIR)) {
+		saved_errno = fchdir(sp->fts_rfd) ? errno : 0;
+		(void)close(sp->fts_rfd);
+	}
+
+	/* Free up the stream pointer. */
+	free(sp);
+
+	/* Set errno and return. */
+	if (!ISSET(FTS_NOCHDIR) && saved_errno) {
+		errno = saved_errno;
+		return (-1);
+	}
+	return (0);
+}
+
+/*
+ * Special case a root of "/" so that slashes aren't appended which would
+ * cause paths to be written as "//foo".
+ */
+#define	NAPPEND(p)							\
+	(p->fts_level == FTS_ROOTLEVEL && p->fts_pathlen == 1 &&	\
+	    p->fts_path[0] == '/' ? 0 : p->fts_pathlen)
+
+FTSENT *
+fts_read(sp)
+	register FTS *sp;
+{
+	register FTSENT *p, *tmp;
+	register int instr;
+	register char *t;
+	int saved_errno;
+
+	/* If finished or unrecoverable error, return NULL. */
+	if (sp->fts_cur == NULL || ISSET(FTS_STOP))
+		return (NULL);
+
+	/* Set current node pointer. */
+	p = sp->fts_cur;
+
+	/* Save and zero out user instructions. */
+	instr = p->fts_instr;
+	p->fts_instr = FTS_NOINSTR;
+
+	/* Any type of file may be re-visited; re-stat and re-turn. */
+	if (instr == FTS_AGAIN) {
+		p->fts_info = fts_stat(sp, p, 0);
+		return (p);
+	}
+
+	/*
+	 * Following a symlink -- SLNONE test allows application to see
+	 * SLNONE and recover.  If indirecting through a symlink, have
+	 * keep a pointer to current location.  If unable to get that
+	 * pointer, follow fails.
+	 */
+	if (instr == FTS_FOLLOW &&
+	    (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE)) {
+		p->fts_info = fts_stat(sp, p, 1);
+		if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR))
+			if ((p->fts_symfd = open(".", O_RDONLY, 0)) < 0) {
+				p->fts_errno = errno;
+				p->fts_info = FTS_ERR;
+			} else
+				p->fts_flags |= FTS_SYMFOLLOW;
+		return (p);
+	}
+
+	/* Directory in pre-order. */
+	if (p->fts_info == FTS_D) {
+		/* If skipped or crossed mount point, do post-order visit. */
+		if (instr == FTS_SKIP ||
+		    ISSET(FTS_XDEV) && p->fts_dev != sp->fts_dev) {
+			if (p->fts_flags & FTS_SYMFOLLOW)
+				(void)close(p->fts_symfd);
+			if (sp->fts_child) {
+				fts_lfree(sp->fts_child);
+				sp->fts_child = NULL;
+			}
+			p->fts_info = FTS_DP;
+			return (p);
+		}
+
+		/* Rebuild if only read the names and now traversing. */
+		if (sp->fts_child && sp->fts_options & FTS_NAMEONLY) {
+			sp->fts_options &= ~FTS_NAMEONLY;
+			fts_lfree(sp->fts_child);
+			sp->fts_child = NULL;
+		}
+
+		/*
+		 * Cd to the subdirectory.
+		 *
+		 * If have already read and now fail to chdir, whack the list
+		 * to make the names come out right, and set the parent errno
+		 * so the application will eventually get an error condition.
+		 * Set the FTS_DONTCHDIR flag so that when we logically change
+		 * directories back to the parent we don't do a chdir.
+		 *
+		 * If haven't read do so.  If the read fails, fts_build sets
+		 * FTS_STOP or the fts_info field of the node.
+		 */
+		if (sp->fts_child) {
+			if (CHDIR(sp, p->fts_accpath)) {
+				p->fts_errno = errno;
+				p->fts_flags |= FTS_DONTCHDIR;
+				for (p = sp->fts_child; p; p = p->fts_link)
+					p->fts_accpath =
+					    p->fts_parent->fts_accpath;
+			}
+		} else if ((sp->fts_child = fts_build(sp, BREAD)) == NULL) {
+			if (ISSET(FTS_STOP))
+				return (NULL);
+			return (p);
+		}
+		p = sp->fts_child;
+		sp->fts_child = NULL;
+		goto name;
+	}
+
+	/* Move to the next node on this level. */
+next:	tmp = p;
+	if (p = p->fts_link) {
+		free(tmp);
+
+		/*
+		 * If reached the top, return to the original directory, and
+		 * load the paths for the next root.
+		 */
+		if (p->fts_level == FTS_ROOTLEVEL) {
+			if (!ISSET(FTS_NOCHDIR) && FCHDIR(sp, sp->fts_rfd)) {
+				SET(FTS_STOP);
+				return (NULL);
+			}
+			fts_load(sp, p);
+			return (sp->fts_cur = p);
+		}
+
+		/*
+		 * User may have called fts_set on the node.  If skipped,
+		 * ignore.  If followed, get a file descriptor so we can
+		 * get back if necessary.
+		 */
+		if (p->fts_instr == FTS_SKIP)
+			goto next;
+		if (p->fts_instr == FTS_FOLLOW) {
+			p->fts_info = fts_stat(sp, p, 1);
+			if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR))
+				if ((p->fts_symfd =
+				    open(".", O_RDONLY, 0)) < 0) {
+					p->fts_errno = errno;
+					p->fts_info = FTS_ERR;
+				} else
+					p->fts_flags |= FTS_SYMFOLLOW;
+			p->fts_instr = FTS_NOINSTR;
+		}
+
+name:		t = sp->fts_path + NAPPEND(p->fts_parent);
+		*t++ = '/';
+		memmove(t, p->fts_name, p->fts_namelen + 1);
+		return (sp->fts_cur = p);
+	}
+
+	/* Move up to the parent node. */
+	p = tmp->fts_parent;
+	free(tmp);
+
+	if (p->fts_level == FTS_ROOTPARENTLEVEL) {
+		/*
+		 * Done; free everything up and set errno to 0 so the user
+		 * can distinguish between error and EOF.
+		 */
+		free(p);
+		errno = 0;
+		return (sp->fts_cur = NULL);
+	}
+
+	/* Nul terminate the pathname. */
+	sp->fts_path[p->fts_pathlen] = '\0';
+
+	/*
+	 * Return to the parent directory.  If at a root node or came through
+	 * a symlink, go back through the file descriptor.  Otherwise, cd up
+	 * one directory.
+	 */
+	if (p->fts_level == FTS_ROOTLEVEL) {
+		if (!ISSET(FTS_NOCHDIR) && FCHDIR(sp, sp->fts_rfd)) {
+			SET(FTS_STOP);
+			return (NULL);
+		}
+	} else if (p->fts_flags & FTS_SYMFOLLOW) {
+		if (FCHDIR(sp, p->fts_symfd)) {
+			saved_errno = errno;
+			(void)close(p->fts_symfd);
+			errno = saved_errno;
+			SET(FTS_STOP);
+			return (NULL);
+		}
+		(void)close(p->fts_symfd);
+	} else if (!(p->fts_flags & FTS_DONTCHDIR)) {
+		if (CHDIR(sp, "..")) {
+			SET(FTS_STOP);
+			return (NULL);
+		}
+	}
+	p->fts_info = p->fts_errno ? FTS_ERR : FTS_DP;
+	return (sp->fts_cur = p);
+}
+
+/*
+ * Fts_set takes the stream as an argument although it's not used in this
+ * implementation; it would be necessary if anyone wanted to add global
+ * semantics to fts using fts_set.  An error return is allowed for similar
+ * reasons.
+ */
+/* ARGSUSED */
+int
+fts_set(sp, p, instr)
+	FTS *sp;
+	FTSENT *p;
+	int instr;
+{
+	if (instr && instr != FTS_AGAIN && instr != FTS_FOLLOW &&
+	    instr != FTS_NOINSTR && instr != FTS_SKIP) {
+		errno = EINVAL;
+		return (1);
+	}
+	p->fts_instr = instr;
+	return (0);
+}
+
+FTSENT *
+fts_children(sp, instr)
+	register FTS *sp;
+	int instr;
+{
+	register FTSENT *p;
+	int fd;
+
+	if (instr && instr != FTS_NAMEONLY) {
+		errno = EINVAL;
+		return (NULL);
+	}
+
+	/* Set current node pointer. */
+	p = sp->fts_cur;
+
+	/*
+	 * Errno set to 0 so user can distinguish empty directory from
+	 * an error.
+	 */
+	errno = 0;
+
+	/* Fatal errors stop here. */
+	if (ISSET(FTS_STOP))
+		return (NULL);
+
+	/* Return logical hierarchy of user's arguments. */
+	if (p->fts_info == FTS_INIT)
+		return (p->fts_link);
+
+	/*
+	 * If not a directory being visited in pre-order, stop here.  Could
+	 * allow FTS_DNR, assuming the user has fixed the problem, but the
+	 * same effect is available with FTS_AGAIN.
+	 */
+	if (p->fts_info != FTS_D /* && p->fts_info != FTS_DNR */)
+		return (NULL);
+
+	/* Free up any previous child list. */
+	if (sp->fts_child)
+		fts_lfree(sp->fts_child);
+
+	if (instr == FTS_NAMEONLY) {
+		sp->fts_options |= FTS_NAMEONLY;
+		instr = BNAMES;
+	} else
+		instr = BCHILD;
+
+	/*
+	 * If using chdir on a relative path and called BEFORE fts_read does
+	 * its chdir to the root of a traversal, we can lose -- we need to
+	 * chdir into the subdirectory, and we don't know where the current
+	 * directory is, so we can't get back so that the upcoming chdir by
+	 * fts_read will work.
+	 */
+	if (p->fts_level != FTS_ROOTLEVEL || p->fts_accpath[0] == '/' ||
+	    ISSET(FTS_NOCHDIR))
+		return (sp->fts_child = fts_build(sp, instr));
+
+	if ((fd = open(".", O_RDONLY, 0)) < 0)
+		return (NULL);
+	sp->fts_child = fts_build(sp, instr);
+	if (fchdir(fd))
+		return (NULL);
+	(void)close(fd);
+	return (sp->fts_child);
+}
+
+/*
+ * This is the tricky part -- do not casually change *anything* in here.  The
+ * idea is to build the linked list of entries that are used by fts_children
+ * and fts_read.  There are lots of special cases.
+ *
+ * The real slowdown in walking the tree is the stat calls.  If FTS_NOSTAT is
+ * set and it's a physical walk (so that symbolic links can't be directories),
+ * we can do things quickly.  First, if it's a 4.4BSD file system, the type
+ * of the file is in the directory entry.  Otherwise, we assume that the number
+ * of subdirectories in a node is equal to the number of links to the parent.
+ * The former skips all stat calls.  The latter skips stat calls in any leaf
+ * directories and for any files after the subdirectories in the directory have
+ * been found, cutting the stat calls by about 2/3.
+ */
+static FTSENT *
+fts_build(sp, type)
+	register FTS *sp;
+	int type;
+{
+	register struct dirent *dp;
+	register FTSENT *p, *head;
+	register int nitems;
+	FTSENT *cur, *tail;
+	DIR *dirp;
+	void *adjaddr;
+	int cderrno, descend, len, level, maxlen, nlinks, saved_errno;
+	char *cp;
+
+	/* Set current node pointer. */
+	cur = sp->fts_cur;
+
+	/*
+	 * Open the directory for reading.  If this fails, we're done.
+	 * If being called from fts_read, set the fts_info field.
+	 */
+	if ((dirp = opendir(cur->fts_accpath)) == NULL) {
+		if (type == BREAD) {
+			cur->fts_info = FTS_DNR;
+			cur->fts_errno = errno;
+		}
+		return (NULL);
+	}
+
+	/*
+	 * Nlinks is the number of possible entries of type directory in the
+	 * directory if we're cheating on stat calls, 0 if we're not doing
+	 * any stat calls at all, -1 if we're doing stats on everything.
+	 */
+	if (type == BNAMES)
+		nlinks = 0;
+	else if (ISSET(FTS_NOSTAT) && ISSET(FTS_PHYSICAL))
+		nlinks = cur->fts_nlink - (ISSET(FTS_SEEDOT) ? 0 : 2);
+	else
+		nlinks = -1;
+
+#ifdef notdef
+	(void)printf("nlinks == %d (cur: %d)\n", nlinks, cur->fts_nlink);
+	(void)printf("NOSTAT %d PHYSICAL %d SEEDOT %d\n",
+	    ISSET(FTS_NOSTAT), ISSET(FTS_PHYSICAL), ISSET(FTS_SEEDOT));
+#endif
+	/*
+	 * If we're going to need to stat anything or we want to descend
+	 * and stay in the directory, chdir.  If this fails we keep going,
+	 * but set a flag so we don't chdir after the post-order visit.
+	 * We won't be able to stat anything, but we can still return the
+	 * names themselves.  Note, that since fts_read won't be able to
+	 * chdir into the directory, it will have to return different path
+	 * names than before, i.e. "a/b" instead of "b".  Since the node
+	 * has already been visited in pre-order, have to wait until the
+	 * post-order visit to return the error.  There is a special case
+	 * here, if there was nothing to stat then it's not an error to
+	 * not be able to stat.  This is all fairly nasty.  If a program
+	 * needed sorted entries or stat information, they had better be
+	 * checking FTS_NS on the returned nodes.
+	 */
+	cderrno = 0;
+	if (nlinks || type == BREAD)
+		if (FCHDIR(sp, dirfd(dirp))) {
+			if (nlinks && type == BREAD)
+				cur->fts_errno = errno;
+			cur->fts_flags |= FTS_DONTCHDIR;
+			descend = 0;
+			cderrno = errno;
+		} else
+			descend = 1;
+	else
+		descend = 0;
+
+	/*
+	 * Figure out the max file name length that can be stored in the
+	 * current path -- the inner loop allocates more path as necessary.
+	 * We really wouldn't have to do the maxlen calculations here, we
+	 * could do them in fts_read before returning the path, but it's a
+	 * lot easier here since the length is part of the dirent structure.
+	 *
+	 * If not changing directories set a pointer so that can just append
+	 * each new name into the path.
+	 */
+	maxlen = sp->fts_pathlen - cur->fts_pathlen - 1;
+	len = NAPPEND(cur);
+	if (ISSET(FTS_NOCHDIR)) {
+		cp = sp->fts_path + len;
+		*cp++ = '/';
+	}
+
+	level = cur->fts_level + 1;
+
+	/* Read the directory, attaching each entry to the `link' pointer. */
+	adjaddr = NULL;
+	for (head = tail = NULL, nitems = 0; dp = readdir(dirp);) {
+		if (!ISSET(FTS_SEEDOT) && ISDOT(dp->d_name))
+			continue;
+
+		if ((p = fts_alloc(sp, dp->d_name, (int)dp->d_namlen)) == NULL)
+			goto mem1;
+		if (dp->d_namlen > maxlen) {
+			if (fts_palloc(sp, (size_t)dp->d_namlen)) {
+				/*
+				 * No more memory for path or structures.  Save
+				 * errno, free up the current structure and the
+				 * structures already allocated.
+				 */
+mem1:				saved_errno = errno;
+				if (p)
+					free(p);
+				fts_lfree(head);
+				(void)closedir(dirp);
+				errno = saved_errno;
+				cur->fts_info = FTS_ERR;
+				SET(FTS_STOP);
+				return (NULL);
+			}
+			adjaddr = sp->fts_path;
+			maxlen = sp->fts_pathlen - sp->fts_cur->fts_pathlen - 1;
+		}
+
+		p->fts_pathlen = len + dp->d_namlen + 1;
+		p->fts_parent = sp->fts_cur;
+		p->fts_level = level;
+
+		if (cderrno) {
+			if (nlinks) {
+				p->fts_info = FTS_NS;
+				p->fts_errno = cderrno;
+			} else
+				p->fts_info = FTS_NSOK;
+			p->fts_accpath = cur->fts_accpath;
+		} else if (nlinks == 0
+#ifdef DT_DIR
+		    || nlinks > 0 &&
+		    dp->d_type != DT_DIR && dp->d_type != DT_UNKNOWN
+#endif
+		    ) {
+			p->fts_accpath =
+			    ISSET(FTS_NOCHDIR) ? p->fts_path : p->fts_name;
+			p->fts_info = FTS_NSOK;
+		} else {
+			/* Build a file name for fts_stat to stat. */
+			if (ISSET(FTS_NOCHDIR)) {
+				p->fts_accpath = p->fts_path;
+				memmove(cp, p->fts_name, p->fts_namelen + 1);
+			} else
+				p->fts_accpath = p->fts_name;
+			/* Stat it. */
+			p->fts_info = fts_stat(sp, p, 0);
+
+			/* Decrement link count if applicable. */
+			if (nlinks > 0 && (p->fts_info == FTS_D ||
+			    p->fts_info == FTS_DC || p->fts_info == FTS_DOT))
+				--nlinks;
+		}
+
+		/* We walk in directory order so "ls -f" doesn't get upset. */
+		p->fts_link = NULL;
+		if (head == NULL)
+			head = tail = p;
+		else {
+			tail->fts_link = p;
+			tail = p;
+		}
+		++nitems;
+	}
+	(void)closedir(dirp);
+
+	/*
+	 * If had to realloc the path, adjust the addresses for the rest
+	 * of the tree.
+	 */
+	if (adjaddr)
+		fts_padjust(sp, adjaddr);
+
+	/*
+	 * If not changing directories, reset the path back to original
+	 * state.
+	 */
+	if (ISSET(FTS_NOCHDIR)) {
+		if (cp - 1 > sp->fts_path)
+			--cp;
+		*cp = '\0';
+	}
+
+	/*
+	 * If descended after called from fts_children or after called from
+	 * fts_read and nothing found, get back.  At the root level we use
+	 * the saved fd; if one of fts_open()'s arguments is a relative path
+	 * to an empty directory, we wind up here with no other way back.  If
+	 * can't get back, we're done.
+	 */
+	if (descend && (type == BCHILD || !nitems) &&
+	    (cur->fts_level == FTS_ROOTLEVEL ?
+	    FCHDIR(sp, sp->fts_rfd) : CHDIR(sp, ".."))) {
+		cur->fts_info = FTS_ERR;
+		SET(FTS_STOP);
+		return (NULL);
+	}
+
+	/* If didn't find anything, return NULL. */
+	if (!nitems) {
+		if (type == BREAD)
+			cur->fts_info = FTS_DP;
+		return (NULL);
+	}
+
+	/* Sort the entries. */
+	if (sp->fts_compar && nitems > 1)
+		head = fts_sort(sp, head, nitems);
+	return (head);
+}
+
+static u_short
+fts_stat(sp, p, follow)
+	FTS *sp;
+	register FTSENT *p;
+	int follow;
+{
+	register FTSENT *t;
+	register dev_t dev;
+	register ino_t ino;
+	struct stat *sbp, sb;
+	int saved_errno;
+
+	/* If user needs stat info, stat buffer already allocated. */
+	sbp = ISSET(FTS_NOSTAT) ? &sb : p->fts_statp;
+
+	/*
+	 * If doing a logical walk, or application requested FTS_FOLLOW, do
+	 * a stat(2).  If that fails, check for a non-existent symlink.  If
+	 * fail, set the errno from the stat call.
+	 */
+	if (ISSET(FTS_LOGICAL) || follow) {
+		if (stat(p->fts_accpath, sbp)) {
+			saved_errno = errno;
+			if (!lstat(p->fts_accpath, sbp)) {
+				errno = 0;
+				return (FTS_SLNONE);
+			}
+			p->fts_errno = saved_errno;
+			goto err;
+		}
+	} else if (lstat(p->fts_accpath, sbp)) {
+		p->fts_errno = errno;
+err:		memset(sbp, 0, sizeof(struct stat));
+		return (FTS_NS);
+	}
+
+	if (S_ISDIR(sbp->st_mode)) {
+		/*
+		 * Set the device/inode.  Used to find cycles and check for
+		 * crossing mount points.  Also remember the link count, used
+		 * in fts_build to limit the number of stat calls.  It is
+		 * understood that these fields are only referenced if fts_info
+		 * is set to FTS_D.
+		 */
+		dev = p->fts_dev = sbp->st_dev;
+		ino = p->fts_ino = sbp->st_ino;
+		p->fts_nlink = sbp->st_nlink;
+
+		if (ISDOT(p->fts_name))
+			return (FTS_DOT);
+
+		/*
+		 * Cycle detection is done by brute force when the directory
+		 * is first encountered.  If the tree gets deep enough or the
+		 * number of symbolic links to directories is high enough,
+		 * something faster might be worthwhile.
+		 */
+		for (t = p->fts_parent;
+		    t->fts_level >= FTS_ROOTLEVEL; t = t->fts_parent)
+			if (ino == t->fts_ino && dev == t->fts_dev) {
+				p->fts_cycle = t;
+				return (FTS_DC);
+			}
+		return (FTS_D);
+	}
+	if (S_ISLNK(sbp->st_mode))
+		return (FTS_SL);
+	if (S_ISREG(sbp->st_mode))
+		return (FTS_F);
+	return (FTS_DEFAULT);
+}
+
+static FTSENT *
+fts_sort(sp, head, nitems)
+	FTS *sp;
+	FTSENT *head;
+	register int nitems;
+{
+	register FTSENT **ap, *p;
+
+	/*
+	 * Construct an array of pointers to the structures and call qsort(3).
+	 * Reassemble the array in the order returned by qsort.  If unable to
+	 * sort for memory reasons, return the directory entries in their
+	 * current order.  Allocate enough space for the current needs plus
+	 * 40 so don't realloc one entry at a time.
+	 */
+	if (nitems > sp->fts_nitems) {
+		sp->fts_nitems = nitems + 40;
+		if ((sp->fts_array = realloc(sp->fts_array,
+		    (size_t)(sp->fts_nitems * sizeof(FTSENT *)))) == NULL) {
+			sp->fts_nitems = 0;
+			return (head);
+		}
+	}
+	for (ap = sp->fts_array, p = head; p; p = p->fts_link)
+		*ap++ = p;
+	qsort((void *)sp->fts_array, nitems, sizeof(FTSENT *), sp->fts_compar);
+	for (head = *(ap = sp->fts_array); --nitems; ++ap)
+		ap[0]->fts_link = ap[1];
+	ap[0]->fts_link = NULL;
+	return (head);
+}
+
+static FTSENT *
+fts_alloc(sp, name, namelen)
+	FTS *sp;
+	char *name;
+	register int namelen;
+{
+	register FTSENT *p;
+	size_t len;
+
+	/*
+	 * The file name is a variable length array and no stat structure is
+	 * necessary if the user has set the nostat bit.  Allocate the FTSENT
+	 * structure, the file name and the stat structure in one chunk, but
+	 * be careful that the stat structure is reasonably aligned.  Since the
+	 * fts_name field is declared to be of size 1, the fts_name pointer is
+	 * namelen + 2 before the first possible address of the stat structure.
+	 */
+	len = sizeof(FTSENT) + namelen;
+	if (!ISSET(FTS_NOSTAT))
+		len += sizeof(struct stat) + ALIGNBYTES;
+	if ((p = malloc(len)) == NULL)
+		return (NULL);
+
+	/* Copy the name plus the trailing NULL. */
+	memmove(p->fts_name, name, namelen + 1);
+
+	if (!ISSET(FTS_NOSTAT))
+		p->fts_statp = (struct stat *)ALIGN(p->fts_name + namelen + 2);
+	p->fts_namelen = namelen;
+	p->fts_path = sp->fts_path;
+	p->fts_errno = 0;
+	p->fts_flags = 0;
+	p->fts_instr = FTS_NOINSTR;
+	p->fts_number = 0;
+	p->fts_pointer = NULL;
+	return (p);
+}
+
+static void
+fts_lfree(head)
+	register FTSENT *head;
+{
+	register FTSENT *p;
+
+	/* Free a linked list of structures. */
+	while (p = head) {
+		head = head->fts_link;
+		free(p);
+	}
+}
+
+/*
+ * Allow essentially unlimited paths; find, rm, ls should all work on any tree.
+ * Most systems will allow creation of paths much longer than MAXPATHLEN, even
+ * though the kernel won't resolve them.  Add the size (not just what's needed)
+ * plus 256 bytes so don't realloc the path 2 bytes at a time.
+ */
+static int
+fts_palloc(sp, more)
+	FTS *sp;
+	size_t more;
+{
+	sp->fts_pathlen += more + 256;
+	sp->fts_path = realloc(sp->fts_path, (size_t)sp->fts_pathlen);
+	return (sp->fts_path == NULL);
+}
+
+/*
+ * When the path is realloc'd, have to fix all of the pointers in structures
+ * already returned.
+ */
+static void
+fts_padjust(sp, addr)
+	FTS *sp;
+	void *addr;
+{
+	FTSENT *p;
+
+#define	ADJUST(p) {							\
+	(p)->fts_accpath =						\
+	    (char *)addr + ((p)->fts_accpath - (p)->fts_path);		\
+	(p)->fts_path = addr;						\
+}
+	/* Adjust the current set of children. */
+	for (p = sp->fts_child; p; p = p->fts_link)
+		ADJUST(p);
+
+	/* Adjust the rest of the tree. */
+	for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) {
+		ADJUST(p);
+		p = p->fts_link ? p->fts_link : p->fts_parent;
+	}
+}
+
+static size_t
+fts_maxarglen(argv)
+	char * const *argv;
+{
+	size_t len, max;
+
+	for (max = 0; *argv; ++argv)
+		if ((len = strlen(*argv)) > max)
+			max = len;
+	return (max);
+}
diff --git a/lib/libc/gen/fts-compat.h b/lib/libc/gen/fts-compat.h
new file mode 100644
index 0000000..84dbe14
--- /dev/null
+++ b/lib/libc/gen/fts-compat.h
@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)fts.h	8.1 (Berkeley) 6/2/93
+ */
+
+#ifndef	_FTS_H_
+#define	_FTS_H_
+
+typedef struct {
+	struct _ftsent *fts_cur;	/* current node */
+	struct _ftsent *fts_child;	/* linked list of children */
+	struct _ftsent **fts_array;	/* sort array */
+	dev_t fts_dev;			/* starting device # */
+	char *fts_path;			/* path for this descent */
+	int fts_rfd;			/* fd for root */
+	int fts_pathlen;		/* sizeof(path) */
+	int fts_nitems;			/* elements in the sort array */
+	int (*fts_compar)();		/* compare function */
+
+#define	FTS_COMFOLLOW	0x001		/* follow command line symlinks */
+#define	FTS_LOGICAL	0x002		/* logical walk */
+#define	FTS_NOCHDIR	0x004		/* don't change directories */
+#define	FTS_NOSTAT	0x008		/* don't get stat info */
+#define	FTS_PHYSICAL	0x010		/* physical walk */
+#define	FTS_SEEDOT	0x020		/* return dot and dot-dot */
+#define	FTS_XDEV	0x040		/* don't cross devices */
+#define	FTS_OPTIONMASK	0x07f		/* valid user option mask */
+
+#define	FTS_NAMEONLY	0x080		/* (private) child names only */
+#define	FTS_STOP	0x100		/* (private) unrecoverable error */
+	int fts_options;		/* fts_open options, global flags */
+} FTS;
+
+typedef struct _ftsent {
+	struct _ftsent *fts_cycle;	/* cycle node */
+	struct _ftsent *fts_parent;	/* parent directory */
+	struct _ftsent *fts_link;	/* next file in directory */
+	long fts_number;	        /* local numeric value */
+	void *fts_pointer;	        /* local address value */
+	char *fts_accpath;		/* access path */
+	char *fts_path;			/* root path */
+	int fts_errno;			/* errno for this node */
+	int fts_symfd;			/* fd for symlink */
+	u_short fts_pathlen;		/* strlen(fts_path) */
+	u_short fts_namelen;		/* strlen(fts_name) */
+
+	ino_t fts_ino;			/* inode */
+	dev_t fts_dev;			/* device */
+	nlink_t fts_nlink;		/* link count */
+
+#define	FTS_ROOTPARENTLEVEL	-1
+#define	FTS_ROOTLEVEL		 0
+	short fts_level;		/* depth (-1 to N) */
+
+#define	FTS_D		 1		/* preorder directory */
+#define	FTS_DC		 2		/* directory that causes cycles */
+#define	FTS_DEFAULT	 3		/* none of the above */
+#define	FTS_DNR		 4		/* unreadable directory */
+#define	FTS_DOT		 5		/* dot or dot-dot */
+#define	FTS_DP		 6		/* postorder directory */
+#define	FTS_ERR		 7		/* error; errno is set */
+#define	FTS_F		 8		/* regular file */
+#define	FTS_INIT	 9		/* initialized only */
+#define	FTS_NS		10		/* stat(2) failed */
+#define	FTS_NSOK	11		/* no stat(2) requested */
+#define	FTS_SL		12		/* symbolic link */
+#define	FTS_SLNONE	13		/* symbolic link without target */
+	u_short fts_info;		/* user flags for FTSENT structure */
+
+#define	FTS_DONTCHDIR	 0x01		/* don't chdir .. to the parent */
+#define	FTS_SYMFOLLOW	 0x02		/* followed a symlink to get here */
+	u_short fts_flags;		/* private flags for FTSENT structure */
+
+#define	FTS_AGAIN	 1		/* read node again */
+#define	FTS_FOLLOW	 2		/* follow symbolic link */
+#define	FTS_NOINSTR	 3		/* no instructions */
+#define	FTS_SKIP	 4		/* discard node */
+	u_short fts_instr;		/* fts_set() instructions */
+
+	struct stat *fts_statp;		/* stat(2) information */
+	char fts_name[1];		/* file name */
+} FTSENT;
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+FTSENT	*fts_children __P((FTS *, int));
+int	 fts_close __P((FTS *));
+FTS	*fts_open __P((char * const *, int,
+	    int (*)(const FTSENT **, const FTSENT **)));
+FTSENT	*fts_read __P((FTS *));
+int	 fts_set __P((FTS *, FTSENT *, int));
+__END_DECLS
+
+#endif /* !_FTS_H_ */
diff --git a/lib/libc/gen/fts.3 b/lib/libc/gen/fts.3
new file mode 100644
index 0000000..dde076d
--- /dev/null
+++ b/lib/libc/gen/fts.3
@@ -0,0 +1,748 @@
+.\" Copyright (c) 1989, 1991, 1993, 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)fts.3	8.5 (Berkeley) 4/16/94
+.\"
+.Dd April 16, 1994
+.Dt FTS 3
+.Os
+.Sh NAME
+.Nm fts
+.Nd traverse a file hierarchy
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/stat.h>
+.Fd #include <fts.h>
+.Ft FTS *
+.Fn fts_open "char * const *path_argv" "int options" "int *compar(const FTSENT **, const FTSENT **)"
+.Ft FTSENT *
+.Fn fts_read "FTS *ftsp"
+.Ft FTSENT *
+.Fn fts_children "FTS *ftsp" "int options"
+.Ft int
+.Fn fts_set "FTS ftsp" "FTSENT *f" "int options"
+.Ft int
+.Fn fts_close "FTS *ftsp"
+.Sh DESCRIPTION
+The
+.Nm fts
+functions are provided for traversing
+.Tn UNIX
+file hierarchies.
+A simple overview is that the
+.Fn fts_open
+function returns a ``handle'' on a file hierarchy, which is then supplied to
+the other
+.Nm fts
+functions.
+The function
+.Fn fts_read
+returns a pointer to a structure describing one of the files in the file
+hierarchy.
+The function
+.Fn fts_children
+returns a pointer to a linked list of structures, each of which describes
+one of the files contained in a directory in the hierarchy.
+In general, directories are visited two distinguishable times; in pre-order
+(before any of their descendants are visited) and in post-order (after all
+of their descendants have been visited).
+Files are visited once.
+It is possible to walk the hierarchy ``logically'' (ignoring symbolic links)
+or physically (visiting symbolic links), order the walk of the hierarchy or
+prune and/or re-visit portions of the hierarchy.
+.Pp
+Two structures are defined (and typedef'd) in the include file
+.Aq Pa fts.h .
+The first is
+.Fa FTS ,
+the structure that represents the file hierarchy itself.
+The second is
+.Fa FTSENT ,
+the structure that represents a file in the file
+hierarchy.
+Normally, an
+.Fa FTSENT
+structure is returned for every file in the file
+hierarchy.
+In this manual page, ``file'' and
+.Dq Fa FTSENT No structure
+are generally
+interchangeable.
+The
+.Fa FTSENT
+structure contains at least the following fields, which are
+described in greater detail below:
+.Bd -literal
+typedef struct _ftsent {
+	u_short fts_info;		/* flags for FTSENT structure */
+	char *fts_accpath;		/* access path */
+	char *fts_path;			/* root path */
+	short fts_pathlen;		/* strlen(fts_path) */
+	char *fts_name;			/* file name */
+	short fts_namelen;		/* strlen(fts_name) */
+	short fts_level;		/* depth (\-1 to N) */
+	int fts_errno;			/* file errno */
+	long fts_number;		/* local numeric value */
+	void *fts_pointer;		/* local address value */
+	struct ftsent *fts_parent;	/* parent directory */
+	struct ftsent *fts_link;	/* next file structure */
+	struct ftsent *fts_cycle;	/* cycle structure */
+	struct stat *fts_statp;		/* stat(2) information */
+} FTSENT;
+.Ed
+.Pp
+These fields are defined as follows:
+.Bl -tag -width "fts_namelen"
+.It Fa fts_info
+One of the following flags describing the returned
+.Fa FTSENT
+structure and
+the file it represents.
+With the exception of directories without errors
+.Pq Dv FTS_D ,
+all of these
+entries are terminal, that is, they will not be revisited, nor will any
+of their descendants be visited.
+.Bl  -tag -width FTS_DEFAULT
+.It Dv FTS_D
+A directory being visited in pre-order.
+.It Dv FTS_DC
+A directory that causes a cycle in the tree.
+(The
+.Fa fts_cycle
+field of the
+.Fa FTSENT
+structure will be filled in as well.)
+.It Dv FTS_DEFAULT
+Any
+.Fa FTSENT
+structure that represents a file type not explicitly described
+by one of the other
+.Fa fts_info
+values.
+.It Dv FTS_DNR
+A directory which cannot be read.
+This is an error return, and the
+.Fa fts_errno
+field will be set to indicate what caused the error.
+.It Dv FTS_DOT
+A file named
+.Ql \&.
+or
+.Ql ..
+which was not specified as a file name to
+.Fn fts_open
+(see
+.Dv FTS_SEEDOT ) .
+.It Dv FTS_DP
+A directory being visited in post-order.
+The contents of the
+.Fa FTSENT
+structure will be unchanged from when
+it was returned in pre-order, i.e. with the
+.Fa fts_info
+field set to
+.Dv FTS_D .
+.It Dv FTS_ERR
+This is an error return, and the
+.Fa fts_errno
+field will be set to indicate what caused the error.
+.It Dv FTS_F
+A regular file.
+.It Dv FTS_NS
+A file for which no
+.Xr stat 2
+information was available.
+The contents of the
+.Fa fts_statp
+field are undefined.
+This is an error return, and the
+.Fa fts_errno
+field will be set to indicate what caused the error.
+.It Dv FTS_NSOK
+A file for which no
+.Xr stat 2
+information was requested.
+The contents of the
+.Fa fts_statp
+field are undefined.
+.It Dv FTS_SL
+A symbolic link.
+.It Dv FTS_SLNONE
+A symbolic link with a non-existent target.
+The contents of the
+.Fa fts_statp
+field reference the file characteristic information for the symbolic link
+itself.
+.El
+.It Fa fts_accpath
+A path for accessing the file from the current directory.
+.It Fa fts_path
+The path for the file relative to the root of the traversal.
+This path contains the path specified to
+.Fn fts_open
+as a prefix.
+.It Fa fts_pathlen
+The length of the string referenced by
+.Fa fts_path .
+.It Fa fts_name
+The name of the file.
+.It Fa fts_namelen
+The length of the string referenced by
+.Fa fts_name .
+.It Fa fts_level
+The depth of the traversal, numbered from \-1 to N, where this file
+was found.
+The
+.Fa FTSENT
+structure representing the parent of the starting point (or root)
+of the traversal is numbered \-1, and the
+.Fa FTSENT
+structure for the root
+itself is numbered 0.
+.It Fa fts_errno
+Upon return of a
+.Fa FTSENT
+structure from the
+.Fn fts_children
+or
+.Fn fts_read
+functions, with its
+.Fa fts_info
+field set to 
+.Dv FTS_DNR ,
+.Dv FTS_ERR
+or
+.Dv FTS_NS ,
+the
+.Fa fts_errno
+field contains the value of the external variable
+.Va errno
+specifying the cause of the error.
+Otherwise, the contents of the
+.Fa fts_errno
+field are undefined.
+.It Fa fts_number
+This field is provided for the use of the application program and is
+not modified by the
+.Nm fts
+functions.
+It is initialized to 0.
+.It Fa fts_pointer
+This field is provided for the use of the application program and is
+not modified by the
+.Nm fts
+functions.
+It is initialized to
+.Dv NULL .
+.It Fa fts_parent
+A pointer to the
+.Fa FTSENT
+structure referencing the file in the hierarchy
+immediately above the current file, i.e. the directory of which this
+file is a member.
+A parent structure for the initial entry point is provided as well,
+however, only the
+.Fa fts_level ,
+.Fa fts_number
+and
+.Fa fts_pointer
+fields are guaranteed to be initialized.
+.It Fa fts_link
+Upon return from the
+.Fn fts_children
+function, the
+.Fa fts_link
+field points to the next structure in the NULL-terminated linked list of
+directory members.
+Otherwise, the contents of the
+.Fa fts_link
+field are undefined.
+.It Fa fts_cycle
+If a directory causes a cycle in the hierarchy (see
+.Dv FTS_DC ) ,
+either because
+of a hard link between two directories, or a symbolic link pointing to a
+directory, the
+.Fa fts_cycle
+field of the structure will point to the
+.Fa FTSENT
+structure in the hierarchy that references the same file as the current
+.Fa FTSENT
+structure.
+Otherwise, the contents of the
+.Fa fts_cycle
+field are undefined.
+.It Fa fts_statp
+A pointer to
+.Xr stat 2
+information for the file.
+.El
+.Pp
+A single buffer is used for all of the paths of all of the files in the
+file hierarchy.
+Therefore, the
+.Fa fts_path
+and
+.Fa fts_accpath
+fields are guaranteed to be
+.Dv NULL Ns -terminated
+.Em only
+for the file most recently returned by
+.Fn fts_read .
+To use these fields to reference any files represented by other
+.Fa FTSENT
+structures will require that the path buffer be modified using the
+information contained in that
+.Fa FTSENT
+structure's
+.Fa fts_pathlen
+field.
+Any such modifications should be undone before further calls to
+.Fn fts_read
+are attempted.
+The
+.Fa fts_name
+field is always
+.Dv NULL Ns -terminated.
+.Sh FTS_OPEN
+The
+.Fn fts_open
+function takes a pointer to an array of character pointers naming one
+or more paths which make up a logical file hierarchy to be traversed.
+The array must be terminated by a
+.Dv NULL
+pointer.
+.Pp
+There are
+a number of options, at least one of which (either
+.Dv FTS_LOGICAL
+or
+.Dv FTS_PHYSICAL )
+must be specified.
+The options are selected by
+.Em or Ns 'ing
+the following values:
+.Bl -tag -width "FTS_PHYSICAL"
+.It Dv FTS_COMFOLLOW
+This option causes any symbolic link specified as a root path to be
+followed immediately whether or not
+.Dv FTS_LOGICAL
+is also specified.
+.It Dv FTS_LOGICAL
+This option causes the
+.Nm fts
+routines to return
+.Fa FTSENT
+structures for the targets of symbolic links
+instead of the symbolic links themselves.
+If this option is set, the only symbolic links for which
+.Fa FTSENT
+structures
+are returned to the application are those referencing non-existent files.
+Either
+.Dv FTS_LOGICAL
+or
+.Dv FTS_PHYSICAL
+.Em must
+be provided to the
+.Fn fts_open
+function.
+.It Dv FTS_NOCHDIR
+As a performance optimization, the
+.Nm fts
+functions change directories as they walk the file hierarchy.
+This has the side-effect that an application cannot rely on being
+in any particular directory during the traversal.
+The
+.Dv FTS_NOCHDIR
+option turns off this optimization, and the
+.Nm fts
+functions will not change the current directory.
+Note that applications should not themselves change their current directory
+and try to access files unless
+.Dv FTS_NOCHDIR
+is specified and absolute
+pathnames were provided as arguments to
+.Fn fts_open .
+.It Dv FTS_NOSTAT
+By default, returned
+.Fa FTSENT
+structures reference file characteristic information (the
+.Fa statp
+field) for each file visited.
+This option relaxes that requirement as a performance optimization,
+allowing the
+.Nm fts
+functions to set the
+.Fa fts_info
+field to
+.Dv FTS_NSOK
+and leave the contents of the
+.Fa statp
+field undefined.
+.It Dv FTS_PHYSICAL
+This option causes the
+.Nm fts
+routines to return
+.Fa FTSENT
+structures for symbolic links themselves instead
+of the target files they point to.
+If this option is set,
+.Fa FTSENT
+structures for all symbolic links in the
+hierarchy are returned to the application.
+Either
+.Dv FTS_LOGICAL
+or
+.Dv FTS_PHYSICAL
+.Em must
+be provided to the
+.Fn fts_open
+function.
+.It Dv FTS_SEEDOT
+By default, unless they are specified as path arguments to
+.Fn fts_open ,
+any files named
+.Ql \&.
+or
+.Ql ..
+encountered in the file hierarchy are ignored.
+This option causes the
+.Nm fts
+routines to return
+.Fa FTSENT
+structures for them.
+.It Dv FTS_XDEV
+This option prevents
+.Nm fts
+from descending into directories that have a different device number
+than the file from which the descent began.
+.El
+.Pp
+The argument
+.Fn compar
+specifies a user-defined function which may be used to order the traversal
+of the hierarchy.
+It
+takes two pointers to pointers to
+.Fa FTSENT
+structures as arguments and
+should return a negative value, zero, or a positive value to indicate
+if the file referenced by its first argument comes before, in any order
+with respect to, or after, the file referenced by its second argument.
+The
+.Fa fts_accpath ,
+.Fa fts_path
+and
+.Fa fts_pathlen
+fields of the
+.Fa FTSENT
+structures may
+.Em never
+be used in this comparison.
+If the 
+.Fa fts_info
+field is set to
+.Dv FTS_NS
+or
+.Dv FTS_NSOK ,
+the
+.Fa fts_statp
+field may not either.
+If the
+.Fn compar
+argument is
+.Dv NULL ,
+the directory traversal order is in the order listed in
+.Fa path_argv
+for the root paths, and in the order listed in the directory for
+everything else.
+.Sh FTS_READ
+The
+.Fn fts_read
+function returns a pointer to an
+.Fa FTSENT
+structure describing a file in
+the hierarchy.
+Directories (that are readable and do not cause cycles) are visited at
+least twice, once in pre-order and once in post-order.
+All other files are visited at least once.
+(Hard links between directories that do not cause cycles or symbolic
+links to symbolic links may cause files to be visited more than once,
+or directories more than twice.)
+.Pp
+If all the members of the hierarchy have been returned,
+.Fn fts_read
+returns
+.Dv NULL
+and sets the external variable
+.Va errno
+to 0.
+If an error unrelated to a file in the hierarchy occurs,
+.Fn fts_read
+returns
+.Dv NULL
+and sets
+.Va errno
+appropriately.
+If an error related to a returned file occurs, a pointer to an
+.Fa FTSENT
+structure is returned, and
+.Va errno
+may or may not have been set (see
+.Fa fts_info ) .
+.Pp
+The
+.Fa FTSENT
+structures returned by
+.Fn fts_read
+may be overwritten after a call to
+.Fn fts_close
+on the same file hierarchy stream, or, after a call to
+.Fn fts_read
+on the same file hierarchy stream unless they represent a file of type
+directory, in which case they will not be overwritten until after a call to
+.Fn fts_read
+after the
+.Fa FTSENT
+structure has been returned by the function
+.Fn fts_read
+in post-order.
+.Sh FTS_CHILDREN
+The
+.Fn fts_children
+function returns a pointer to an
+.Fa FTSENT
+structure describing the first entry in a NULL-terminated linked list of
+the files in the directory represented by the
+.Fa FTSENT
+structure most recently returned by
+.Fn fts_read .
+The list is linked through the
+.Fa fts_link
+field of the
+.Fa FTSENT
+structure, and is ordered by the user-specified comparison function, if any.
+Repeated calls to
+.Fn fts_children
+will recreate this linked list.
+.Pp
+As a special case, if
+.Fn fts_read
+has not yet been called for a hierarchy,
+.Fn fts_children
+will return a pointer to the files in the logical directory specified to
+.Fn fts_open ,
+i.e. the arguments specified to
+.Fn fts_open .
+Otherwise, if the
+.Fa FTSENT
+structure most recently returned by
+.Fn fts_read
+is not a directory being visited in pre-order,
+or the directory does not contain any files,
+.Fn fts_children
+returns
+.Dv NULL
+and sets
+.Va errno
+to zero.
+If an error occurs,
+.Fn fts_children
+returns
+.Dv NULL
+and sets
+.Va errno
+appropriately.
+.Pp
+The
+.Fa FTSENT
+structures returned by
+.Fn fts_children
+may be overwritten after a call to
+.Fn fts_children ,
+.Fn fts_close
+or
+.Fn fts_read
+on the same file hierarchy stream.
+.Pp
+.Em Option
+may be set to the following value:
+.Bl -tag -width FTS_NAMEONLY
+.It Dv FTS_NAMEONLY
+Only the names of the files are needed.
+The contents of all the fields in the returned linked list of structures
+are undefined with the exception of the
+.Fa fts_name
+and
+.Fa fts_namelen
+fields.
+.El
+.Sh FTS_SET
+The function
+.Fn fts_set
+allows the user application to determine further processing for the
+file
+.Fa f
+of the stream
+.Fa ftsp .
+The
+.Fn fts_set
+function
+returns 0 on success, and \-1 if an error occurs.
+.Em Option
+must be set to one of the following values:
+.Bl -tag -width FTS_PHYSICAL
+.It Dv FTS_AGAIN
+Re-visit the file; any file type may be re-visited.
+The next call to
+.Fn fts_read
+will return the referenced file.
+The
+.Fa fts_stat
+and
+.Fa fts_info
+fields of the structure will be reinitialized at that time,
+but no other fields will have been changed.
+This option is meaningful only for the most recently returned
+file from
+.Fn fts_read .
+Normal use is for post-order directory visits, where it causes the
+directory to be re-visited (in both pre and post-order) as well as all
+of its descendants.
+.It Dv FTS_FOLLOW
+The referenced file must be a symbolic link.
+If the referenced file is the one most recently returned by
+.Fn fts_read ,
+the next call to
+.Fn fts_read
+returns the file with the
+.Fa fts_info
+and
+.Fa fts_statp
+fields reinitialized to reflect the target of the symbolic link instead
+of the symbolic link itself.
+If the file is one of those most recently returned by
+.Fn fts_children ,
+the
+.Fa fts_info
+and
+.Fa fts_statp
+fields of the structure, when returned by
+.Fn fts_read ,
+will reflect the target of the symbolic link instead of the symbolic link
+itself.
+In either case, if the target of the symbolic link does not exist the
+fields of the returned structure will be unchanged and the
+.Fa fts_info
+field will be set to
+.Dv FTS_SLNONE .
+.Pp
+If the target of the link is a directory, the pre-order return, followed
+by the return of all of its descendants, followed by a post-order return,
+is done.
+.It Dv FTS_SKIP
+No descendants of this file are visited.
+The file may be one of those most recently returned by either
+.Fn fts_children
+or
+.Fn fts_read .
+.El
+.Sh FTS_CLOSE
+The
+.Fn fts_close
+function closes a file hierarchy stream
+.Fa ftsp
+and restores the current directory to the directory from which
+.Fn fts_open
+was called to open
+.Fa ftsp .
+The
+.Fn fts_close
+function
+returns 0 on success, and \-1 if an error occurs.
+.Sh ERRORS
+The function
+.Fn fts_open
+may fail and set
+.Va errno
+for any of the errors specified for the library functions
+.Xr open 2
+and
+.Xr malloc 3 .
+.Pp
+The function
+.Fn fts_close
+may fail and set
+.Va errno
+for any of the errors specified for the library functions
+.Xr chdir 2
+and
+.Xr close 2 .
+.Pp
+The functions
+.Fn fts_read
+and
+.Fn fts_children
+may fail and set
+.Va errno
+for any of the errors specified for the library functions
+.Xr chdir 2 ,
+.Xr malloc 3 ,
+.Xr opendir 3 ,
+.Xr readdir 3
+and
+.Xr stat 2 .
+.Pp
+In addition,
+.Fn fts_children ,
+.Fn fts_open
+and
+.Fn fts_set
+may fail and set
+.Va errno
+as follows:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The options were invalid.
+.El
+.Sh SEE ALSO
+.Xr find 1 ,
+.Xr chdir 2 ,
+.Xr stat 2 ,
+.Xr qsort 3
+.Sh STANDARDS
+The
+.Nm fts
+utility is expected to be included in a future
+.St -p1003.1-88
+revision.
diff --git a/lib/libc/gen/fts.c b/lib/libc/gen/fts.c
new file mode 100644
index 0000000..3915b00
--- /dev/null
+++ b/lib/libc/gen/fts.c
@@ -0,0 +1,971 @@
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fts.c	8.4 (Berkeley) 4/16/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <fts.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static FTSENT	*fts_alloc __P((FTS *, char *, int));
+static FTSENT	*fts_build __P((FTS *, int));
+static void	 fts_lfree __P((FTSENT *));
+static void	 fts_load __P((FTS *, FTSENT *));
+static size_t	 fts_maxarglen __P((char * const *));
+static void	 fts_padjust __P((FTS *, void *));
+static int	 fts_palloc __P((FTS *, size_t));
+static FTSENT	*fts_sort __P((FTS *, FTSENT *, int));
+static u_short	 fts_stat __P((FTS *, FTSENT *, int));
+
+#define	ISDOT(a)	(a[0] == '.' && (!a[1] || a[1] == '.' && !a[2]))
+
+#define	ISSET(opt)	(sp->fts_options & opt)
+#define	SET(opt)	(sp->fts_options |= opt)
+
+#define	CHDIR(sp, path)	(!ISSET(FTS_NOCHDIR) && chdir(path))
+#define	FCHDIR(sp, fd)	(!ISSET(FTS_NOCHDIR) && fchdir(fd))
+
+/* fts_build flags */
+#define	BCHILD		1		/* fts_children */
+#define	BNAMES		2		/* fts_children, names only */
+#define	BREAD		3		/* fts_read */
+
+FTS *
+fts_open(argv, options, compar)
+	char * const *argv;
+	register int options;
+	int (*compar)();
+{
+	register FTS *sp;
+	register FTSENT *p, *root;
+	register int nitems;
+	FTSENT *parent, *tmp;
+	int len;
+
+	/* Options check. */
+	if (options & ~FTS_OPTIONMASK) {
+		errno = EINVAL;
+		return (NULL);
+	}
+
+	/* Allocate/initialize the stream */
+	if ((sp = malloc((u_int)sizeof(FTS))) == NULL)
+		return (NULL);
+	memset(sp, 0, sizeof(FTS));
+	sp->fts_compar = compar;
+	sp->fts_options = options;
+
+	/* Logical walks turn on NOCHDIR; symbolic links are too hard. */
+	if (ISSET(FTS_LOGICAL))
+		SET(FTS_NOCHDIR);
+
+	/*
+	 * Start out with 1K of path space, and enough, in any case,
+	 * to hold the user's paths.
+	 */
+	if (fts_palloc(sp, MAX(fts_maxarglen(argv), MAXPATHLEN)))
+		goto mem1;
+
+	/* Allocate/initialize root's parent. */
+	if ((parent = fts_alloc(sp, "", 0)) == NULL)
+		goto mem2;
+	parent->fts_level = FTS_ROOTPARENTLEVEL;
+
+	/* Allocate/initialize root(s). */
+	for (root = NULL, nitems = 0; *argv; ++argv, ++nitems) {
+		/* Don't allow zero-length paths. */
+		if ((len = strlen(*argv)) == 0) {
+			errno = ENOENT;
+			goto mem3;
+		}
+
+		p = fts_alloc(sp, *argv, len);
+		p->fts_level = FTS_ROOTLEVEL;
+		p->fts_parent = parent;
+		p->fts_accpath = p->fts_name;
+		p->fts_info = fts_stat(sp, p, ISSET(FTS_COMFOLLOW));
+
+		/* Command-line "." and ".." are real directories. */
+		if (p->fts_info == FTS_DOT)
+			p->fts_info = FTS_D;
+
+		/*
+		 * If comparison routine supplied, traverse in sorted
+		 * order; otherwise traverse in the order specified.
+		 */
+		if (compar) {
+			p->fts_link = root;
+			root = p;
+		} else {
+			p->fts_link = NULL;
+			if (root == NULL)
+				tmp = root = p;
+			else {
+				tmp->fts_link = p;
+				tmp = p;
+			}
+		}
+	}
+	if (compar && nitems > 1)
+		root = fts_sort(sp, root, nitems);
+
+	/*
+	 * Allocate a dummy pointer and make fts_read think that we've just
+	 * finished the node before the root(s); set p->fts_info to FTS_INIT
+	 * so that everything about the "current" node is ignored.
+	 */
+	if ((sp->fts_cur = fts_alloc(sp, "", 0)) == NULL)
+		goto mem3;
+	sp->fts_cur->fts_link = root;
+	sp->fts_cur->fts_info = FTS_INIT;
+
+	/*
+	 * If using chdir(2), grab a file descriptor pointing to dot to insure
+	 * that we can get back here; this could be avoided for some paths,
+	 * but almost certainly not worth the effort.  Slashes, symbolic links,
+	 * and ".." are all fairly nasty problems.  Note, if we can't get the
+	 * descriptor we run anyway, just more slowly.
+	 */
+	if (!ISSET(FTS_NOCHDIR) && (sp->fts_rfd = open(".", O_RDONLY, 0)) < 0)
+		SET(FTS_NOCHDIR);
+
+	return (sp);
+
+mem3:	fts_lfree(root);
+	free(parent);
+mem2:	free(sp->fts_path);
+mem1:	free(sp);
+	return (NULL);
+}
+
+static void
+fts_load(sp, p)
+	FTS *sp;
+	register FTSENT *p;
+{
+	register int len;
+	register char *cp;
+
+	/*
+	 * Load the stream structure for the next traversal.  Since we don't
+	 * actually enter the directory until after the preorder visit, set
+	 * the fts_accpath field specially so the chdir gets done to the right
+	 * place and the user can access the first node.  From fts_open it's
+	 * known that the path will fit.
+	 */
+	len = p->fts_pathlen = p->fts_namelen;
+	memmove(sp->fts_path, p->fts_name, len + 1);
+	if ((cp = strrchr(p->fts_name, '/')) && (cp != p->fts_name || cp[1])) {
+		len = strlen(++cp);
+		memmove(p->fts_name, cp, len + 1);
+		p->fts_namelen = len;
+	}
+	p->fts_accpath = p->fts_path = sp->fts_path;
+	sp->fts_dev = p->fts_dev;
+}
+
+int
+fts_close(sp)
+	FTS *sp;
+{
+	register FTSENT *freep, *p;
+	int saved_errno;
+
+	/*
+	 * This still works if we haven't read anything -- the dummy structure
+	 * points to the root list, so we step through to the end of the root
+	 * list which has a valid parent pointer.
+	 */
+	if (sp->fts_cur) {
+		for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) {
+			freep = p;
+			p = p->fts_link ? p->fts_link : p->fts_parent;
+			free(freep);
+		}
+		free(p);
+	}
+
+	/* Free up child linked list, sort array, path buffer. */
+	if (sp->fts_child)
+		fts_lfree(sp->fts_child);
+	if (sp->fts_array)
+		free(sp->fts_array);
+	free(sp->fts_path);
+
+	/* Return to original directory, save errno if necessary. */
+	if (!ISSET(FTS_NOCHDIR)) {
+		saved_errno = fchdir(sp->fts_rfd) ? errno : 0;
+		(void)close(sp->fts_rfd);
+	}
+
+	/* Free up the stream pointer. */
+	free(sp);
+
+	/* Set errno and return. */
+	if (!ISSET(FTS_NOCHDIR) && saved_errno) {
+		errno = saved_errno;
+		return (-1);
+	}
+	return (0);
+}
+
+/*
+ * Special case a root of "/" so that slashes aren't appended which would
+ * cause paths to be written as "//foo".
+ */
+#define	NAPPEND(p)							\
+	(p->fts_level == FTS_ROOTLEVEL && p->fts_pathlen == 1 &&	\
+	    p->fts_path[0] == '/' ? 0 : p->fts_pathlen)
+
+FTSENT *
+fts_read(sp)
+	register FTS *sp;
+{
+	register FTSENT *p, *tmp;
+	register int instr;
+	register char *t;
+	int saved_errno;
+
+	/* If finished or unrecoverable error, return NULL. */
+	if (sp->fts_cur == NULL || ISSET(FTS_STOP))
+		return (NULL);
+
+	/* Set current node pointer. */
+	p = sp->fts_cur;
+
+	/* Save and zero out user instructions. */
+	instr = p->fts_instr;
+	p->fts_instr = FTS_NOINSTR;
+
+	/* Any type of file may be re-visited; re-stat and re-turn. */
+	if (instr == FTS_AGAIN) {
+		p->fts_info = fts_stat(sp, p, 0);
+		return (p);
+	}
+
+	/*
+	 * Following a symlink -- SLNONE test allows application to see
+	 * SLNONE and recover.  If indirecting through a symlink, have
+	 * keep a pointer to current location.  If unable to get that
+	 * pointer, follow fails.
+	 */
+	if (instr == FTS_FOLLOW &&
+	    (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE)) {
+		p->fts_info = fts_stat(sp, p, 1);
+		if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR))
+			if ((p->fts_symfd = open(".", O_RDONLY, 0)) < 0) {
+				p->fts_errno = errno;
+				p->fts_info = FTS_ERR;
+			} else
+				p->fts_flags |= FTS_SYMFOLLOW;
+		return (p);
+	}
+
+	/* Directory in pre-order. */
+	if (p->fts_info == FTS_D) {
+		/* If skipped or crossed mount point, do post-order visit. */
+		if (instr == FTS_SKIP ||
+		    ISSET(FTS_XDEV) && p->fts_dev != sp->fts_dev) {
+			if (p->fts_flags & FTS_SYMFOLLOW)
+				(void)close(p->fts_symfd);
+			if (sp->fts_child) {
+				fts_lfree(sp->fts_child);
+				sp->fts_child = NULL;
+			}
+			p->fts_info = FTS_DP;
+			return (p);
+		}
+
+		/* Rebuild if only read the names and now traversing. */
+		if (sp->fts_child && sp->fts_options & FTS_NAMEONLY) {
+			sp->fts_options &= ~FTS_NAMEONLY;
+			fts_lfree(sp->fts_child);
+			sp->fts_child = NULL;
+		}
+
+		/*
+		 * Cd to the subdirectory.
+		 *
+		 * If have already read and now fail to chdir, whack the list
+		 * to make the names come out right, and set the parent errno
+		 * so the application will eventually get an error condition.
+		 * Set the FTS_DONTCHDIR flag so that when we logically change
+		 * directories back to the parent we don't do a chdir.
+		 *
+		 * If haven't read do so.  If the read fails, fts_build sets
+		 * FTS_STOP or the fts_info field of the node.
+		 */
+		if (sp->fts_child) {
+			if (CHDIR(sp, p->fts_accpath)) {
+				p->fts_errno = errno;
+				p->fts_flags |= FTS_DONTCHDIR;
+				for (p = sp->fts_child; p; p = p->fts_link)
+					p->fts_accpath =
+					    p->fts_parent->fts_accpath;
+			}
+		} else if ((sp->fts_child = fts_build(sp, BREAD)) == NULL) {
+			if (ISSET(FTS_STOP))
+				return (NULL);
+			return (p);
+		}
+		p = sp->fts_child;
+		sp->fts_child = NULL;
+		goto name;
+	}
+
+	/* Move to the next node on this level. */
+next:	tmp = p;
+	if (p = p->fts_link) {
+		free(tmp);
+
+		/*
+		 * If reached the top, return to the original directory, and
+		 * load the paths for the next root.
+		 */
+		if (p->fts_level == FTS_ROOTLEVEL) {
+			if (!ISSET(FTS_NOCHDIR) && FCHDIR(sp, sp->fts_rfd)) {
+				SET(FTS_STOP);
+				return (NULL);
+			}
+			fts_load(sp, p);
+			return (sp->fts_cur = p);
+		}
+
+		/*
+		 * User may have called fts_set on the node.  If skipped,
+		 * ignore.  If followed, get a file descriptor so we can
+		 * get back if necessary.
+		 */
+		if (p->fts_instr == FTS_SKIP)
+			goto next;
+		if (p->fts_instr == FTS_FOLLOW) {
+			p->fts_info = fts_stat(sp, p, 1);
+			if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR))
+				if ((p->fts_symfd =
+				    open(".", O_RDONLY, 0)) < 0) {
+					p->fts_errno = errno;
+					p->fts_info = FTS_ERR;
+				} else
+					p->fts_flags |= FTS_SYMFOLLOW;
+			p->fts_instr = FTS_NOINSTR;
+		}
+
+name:		t = sp->fts_path + NAPPEND(p->fts_parent);
+		*t++ = '/';
+		memmove(t, p->fts_name, p->fts_namelen + 1);
+		return (sp->fts_cur = p);
+	}
+
+	/* Move up to the parent node. */
+	p = tmp->fts_parent;
+	free(tmp);
+
+	if (p->fts_level == FTS_ROOTPARENTLEVEL) {
+		/*
+		 * Done; free everything up and set errno to 0 so the user
+		 * can distinguish between error and EOF.
+		 */
+		free(p);
+		errno = 0;
+		return (sp->fts_cur = NULL);
+	}
+
+	/* Nul terminate the pathname. */
+	sp->fts_path[p->fts_pathlen] = '\0';
+
+	/*
+	 * Return to the parent directory.  If at a root node or came through
+	 * a symlink, go back through the file descriptor.  Otherwise, cd up
+	 * one directory.
+	 */
+	if (p->fts_level == FTS_ROOTLEVEL) {
+		if (!ISSET(FTS_NOCHDIR) && FCHDIR(sp, sp->fts_rfd)) {
+			SET(FTS_STOP);
+			return (NULL);
+		}
+	} else if (p->fts_flags & FTS_SYMFOLLOW) {
+		if (FCHDIR(sp, p->fts_symfd)) {
+			saved_errno = errno;
+			(void)close(p->fts_symfd);
+			errno = saved_errno;
+			SET(FTS_STOP);
+			return (NULL);
+		}
+		(void)close(p->fts_symfd);
+	} else if (!(p->fts_flags & FTS_DONTCHDIR)) {
+		if (CHDIR(sp, "..")) {
+			SET(FTS_STOP);
+			return (NULL);
+		}
+	}
+	p->fts_info = p->fts_errno ? FTS_ERR : FTS_DP;
+	return (sp->fts_cur = p);
+}
+
+/*
+ * Fts_set takes the stream as an argument although it's not used in this
+ * implementation; it would be necessary if anyone wanted to add global
+ * semantics to fts using fts_set.  An error return is allowed for similar
+ * reasons.
+ */
+/* ARGSUSED */
+int
+fts_set(sp, p, instr)
+	FTS *sp;
+	FTSENT *p;
+	int instr;
+{
+	if (instr && instr != FTS_AGAIN && instr != FTS_FOLLOW &&
+	    instr != FTS_NOINSTR && instr != FTS_SKIP) {
+		errno = EINVAL;
+		return (1);
+	}
+	p->fts_instr = instr;
+	return (0);
+}
+
+FTSENT *
+fts_children(sp, instr)
+	register FTS *sp;
+	int instr;
+{
+	register FTSENT *p;
+	int fd;
+
+	if (instr && instr != FTS_NAMEONLY) {
+		errno = EINVAL;
+		return (NULL);
+	}
+
+	/* Set current node pointer. */
+	p = sp->fts_cur;
+
+	/*
+	 * Errno set to 0 so user can distinguish empty directory from
+	 * an error.
+	 */
+	errno = 0;
+
+	/* Fatal errors stop here. */
+	if (ISSET(FTS_STOP))
+		return (NULL);
+
+	/* Return logical hierarchy of user's arguments. */
+	if (p->fts_info == FTS_INIT)
+		return (p->fts_link);
+
+	/*
+	 * If not a directory being visited in pre-order, stop here.  Could
+	 * allow FTS_DNR, assuming the user has fixed the problem, but the
+	 * same effect is available with FTS_AGAIN.
+	 */
+	if (p->fts_info != FTS_D /* && p->fts_info != FTS_DNR */)
+		return (NULL);
+
+	/* Free up any previous child list. */
+	if (sp->fts_child)
+		fts_lfree(sp->fts_child);
+
+	if (instr == FTS_NAMEONLY) {
+		sp->fts_options |= FTS_NAMEONLY;
+		instr = BNAMES;
+	} else
+		instr = BCHILD;
+
+	/*
+	 * If using chdir on a relative path and called BEFORE fts_read does
+	 * its chdir to the root of a traversal, we can lose -- we need to
+	 * chdir into the subdirectory, and we don't know where the current
+	 * directory is, so we can't get back so that the upcoming chdir by
+	 * fts_read will work.
+	 */
+	if (p->fts_level != FTS_ROOTLEVEL || p->fts_accpath[0] == '/' ||
+	    ISSET(FTS_NOCHDIR))
+		return (sp->fts_child = fts_build(sp, instr));
+
+	if ((fd = open(".", O_RDONLY, 0)) < 0)
+		return (NULL);
+	sp->fts_child = fts_build(sp, instr);
+	if (fchdir(fd))
+		return (NULL);
+	(void)close(fd);
+	return (sp->fts_child);
+}
+
+/*
+ * This is the tricky part -- do not casually change *anything* in here.  The
+ * idea is to build the linked list of entries that are used by fts_children
+ * and fts_read.  There are lots of special cases.
+ *
+ * The real slowdown in walking the tree is the stat calls.  If FTS_NOSTAT is
+ * set and it's a physical walk (so that symbolic links can't be directories),
+ * we can do things quickly.  First, if it's a 4.4BSD file system, the type
+ * of the file is in the directory entry.  Otherwise, we assume that the number
+ * of subdirectories in a node is equal to the number of links to the parent.
+ * The former skips all stat calls.  The latter skips stat calls in any leaf
+ * directories and for any files after the subdirectories in the directory have
+ * been found, cutting the stat calls by about 2/3.
+ */
+static FTSENT *
+fts_build(sp, type)
+	register FTS *sp;
+	int type;
+{
+	register struct dirent *dp;
+	register FTSENT *p, *head;
+	register int nitems;
+	FTSENT *cur, *tail;
+	DIR *dirp;
+	void *adjaddr;
+	int cderrno, descend, len, level, maxlen, nlinks, saved_errno;
+	char *cp;
+
+	/* Set current node pointer. */
+	cur = sp->fts_cur;
+
+	/*
+	 * Open the directory for reading.  If this fails, we're done.
+	 * If being called from fts_read, set the fts_info field.
+	 */
+	if ((dirp = opendir(cur->fts_accpath)) == NULL) {
+		if (type == BREAD) {
+			cur->fts_info = FTS_DNR;
+			cur->fts_errno = errno;
+		}
+		return (NULL);
+	}
+
+	/*
+	 * Nlinks is the number of possible entries of type directory in the
+	 * directory if we're cheating on stat calls, 0 if we're not doing
+	 * any stat calls at all, -1 if we're doing stats on everything.
+	 */
+	if (type == BNAMES)
+		nlinks = 0;
+	else if (ISSET(FTS_NOSTAT) && ISSET(FTS_PHYSICAL))
+		nlinks = cur->fts_nlink - (ISSET(FTS_SEEDOT) ? 0 : 2);
+	else
+		nlinks = -1;
+
+#ifdef notdef
+	(void)printf("nlinks == %d (cur: %d)\n", nlinks, cur->fts_nlink);
+	(void)printf("NOSTAT %d PHYSICAL %d SEEDOT %d\n",
+	    ISSET(FTS_NOSTAT), ISSET(FTS_PHYSICAL), ISSET(FTS_SEEDOT));
+#endif
+	/*
+	 * If we're going to need to stat anything or we want to descend
+	 * and stay in the directory, chdir.  If this fails we keep going,
+	 * but set a flag so we don't chdir after the post-order visit.
+	 * We won't be able to stat anything, but we can still return the
+	 * names themselves.  Note, that since fts_read won't be able to
+	 * chdir into the directory, it will have to return different path
+	 * names than before, i.e. "a/b" instead of "b".  Since the node
+	 * has already been visited in pre-order, have to wait until the
+	 * post-order visit to return the error.  There is a special case
+	 * here, if there was nothing to stat then it's not an error to
+	 * not be able to stat.  This is all fairly nasty.  If a program
+	 * needed sorted entries or stat information, they had better be
+	 * checking FTS_NS on the returned nodes.
+	 */
+	cderrno = 0;
+	if (nlinks || type == BREAD)
+		if (FCHDIR(sp, dirfd(dirp))) {
+			if (nlinks && type == BREAD)
+				cur->fts_errno = errno;
+			cur->fts_flags |= FTS_DONTCHDIR;
+			descend = 0;
+			cderrno = errno;
+		} else
+			descend = 1;
+	else
+		descend = 0;
+
+	/*
+	 * Figure out the max file name length that can be stored in the
+	 * current path -- the inner loop allocates more path as necessary.
+	 * We really wouldn't have to do the maxlen calculations here, we
+	 * could do them in fts_read before returning the path, but it's a
+	 * lot easier here since the length is part of the dirent structure.
+	 *
+	 * If not changing directories set a pointer so that can just append
+	 * each new name into the path.
+	 */
+	maxlen = sp->fts_pathlen - cur->fts_pathlen - 1;
+	len = NAPPEND(cur);
+	if (ISSET(FTS_NOCHDIR)) {
+		cp = sp->fts_path + len;
+		*cp++ = '/';
+	}
+
+	level = cur->fts_level + 1;
+
+	/* Read the directory, attaching each entry to the `link' pointer. */
+	adjaddr = NULL;
+	for (head = tail = NULL, nitems = 0; dp = readdir(dirp);) {
+		if (!ISSET(FTS_SEEDOT) && ISDOT(dp->d_name))
+			continue;
+
+		if ((p = fts_alloc(sp, dp->d_name, (int)dp->d_namlen)) == NULL)
+			goto mem1;
+		if (dp->d_namlen > maxlen) {
+			if (fts_palloc(sp, (size_t)dp->d_namlen)) {
+				/*
+				 * No more memory for path or structures.  Save
+				 * errno, free up the current structure and the
+				 * structures already allocated.
+				 */
+mem1:				saved_errno = errno;
+				if (p)
+					free(p);
+				fts_lfree(head);
+				(void)closedir(dirp);
+				errno = saved_errno;
+				cur->fts_info = FTS_ERR;
+				SET(FTS_STOP);
+				return (NULL);
+			}
+			adjaddr = sp->fts_path;
+			maxlen = sp->fts_pathlen - sp->fts_cur->fts_pathlen - 1;
+		}
+
+		p->fts_pathlen = len + dp->d_namlen + 1;
+		p->fts_parent = sp->fts_cur;
+		p->fts_level = level;
+
+		if (cderrno) {
+			if (nlinks) {
+				p->fts_info = FTS_NS;
+				p->fts_errno = cderrno;
+			} else
+				p->fts_info = FTS_NSOK;
+			p->fts_accpath = cur->fts_accpath;
+		} else if (nlinks == 0
+#ifdef DT_DIR
+		    || nlinks > 0 &&
+		    dp->d_type != DT_DIR && dp->d_type != DT_UNKNOWN
+#endif
+		    ) {
+			p->fts_accpath =
+			    ISSET(FTS_NOCHDIR) ? p->fts_path : p->fts_name;
+			p->fts_info = FTS_NSOK;
+		} else {
+			/* Build a file name for fts_stat to stat. */
+			if (ISSET(FTS_NOCHDIR)) {
+				p->fts_accpath = p->fts_path;
+				memmove(cp, p->fts_name, p->fts_namelen + 1);
+			} else
+				p->fts_accpath = p->fts_name;
+			/* Stat it. */
+			p->fts_info = fts_stat(sp, p, 0);
+
+			/* Decrement link count if applicable. */
+			if (nlinks > 0 && (p->fts_info == FTS_D ||
+			    p->fts_info == FTS_DC || p->fts_info == FTS_DOT))
+				--nlinks;
+		}
+
+		/* We walk in directory order so "ls -f" doesn't get upset. */
+		p->fts_link = NULL;
+		if (head == NULL)
+			head = tail = p;
+		else {
+			tail->fts_link = p;
+			tail = p;
+		}
+		++nitems;
+	}
+	(void)closedir(dirp);
+
+	/*
+	 * If had to realloc the path, adjust the addresses for the rest
+	 * of the tree.
+	 */
+	if (adjaddr)
+		fts_padjust(sp, adjaddr);
+
+	/*
+	 * If not changing directories, reset the path back to original
+	 * state.
+	 */
+	if (ISSET(FTS_NOCHDIR)) {
+		if (cp - 1 > sp->fts_path)
+			--cp;
+		*cp = '\0';
+	}
+
+	/*
+	 * If descended after called from fts_children or after called from
+	 * fts_read and nothing found, get back.  At the root level we use
+	 * the saved fd; if one of fts_open()'s arguments is a relative path
+	 * to an empty directory, we wind up here with no other way back.  If
+	 * can't get back, we're done.
+	 */
+	if (descend && (type == BCHILD || !nitems) &&
+	    (cur->fts_level == FTS_ROOTLEVEL ?
+	    FCHDIR(sp, sp->fts_rfd) : CHDIR(sp, ".."))) {
+		cur->fts_info = FTS_ERR;
+		SET(FTS_STOP);
+		return (NULL);
+	}
+
+	/* If didn't find anything, return NULL. */
+	if (!nitems) {
+		if (type == BREAD)
+			cur->fts_info = FTS_DP;
+		return (NULL);
+	}
+
+	/* Sort the entries. */
+	if (sp->fts_compar && nitems > 1)
+		head = fts_sort(sp, head, nitems);
+	return (head);
+}
+
+static u_short
+fts_stat(sp, p, follow)
+	FTS *sp;
+	register FTSENT *p;
+	int follow;
+{
+	register FTSENT *t;
+	register dev_t dev;
+	register ino_t ino;
+	struct stat *sbp, sb;
+	int saved_errno;
+
+	/* If user needs stat info, stat buffer already allocated. */
+	sbp = ISSET(FTS_NOSTAT) ? &sb : p->fts_statp;
+
+	/*
+	 * If doing a logical walk, or application requested FTS_FOLLOW, do
+	 * a stat(2).  If that fails, check for a non-existent symlink.  If
+	 * fail, set the errno from the stat call.
+	 */
+	if (ISSET(FTS_LOGICAL) || follow) {
+		if (stat(p->fts_accpath, sbp)) {
+			saved_errno = errno;
+			if (!lstat(p->fts_accpath, sbp)) {
+				errno = 0;
+				return (FTS_SLNONE);
+			}
+			p->fts_errno = saved_errno;
+			goto err;
+		}
+	} else if (lstat(p->fts_accpath, sbp)) {
+		p->fts_errno = errno;
+err:		memset(sbp, 0, sizeof(struct stat));
+		return (FTS_NS);
+	}
+
+	if (S_ISDIR(sbp->st_mode)) {
+		/*
+		 * Set the device/inode.  Used to find cycles and check for
+		 * crossing mount points.  Also remember the link count, used
+		 * in fts_build to limit the number of stat calls.  It is
+		 * understood that these fields are only referenced if fts_info
+		 * is set to FTS_D.
+		 */
+		dev = p->fts_dev = sbp->st_dev;
+		ino = p->fts_ino = sbp->st_ino;
+		p->fts_nlink = sbp->st_nlink;
+
+		if (ISDOT(p->fts_name))
+			return (FTS_DOT);
+
+		/*
+		 * Cycle detection is done by brute force when the directory
+		 * is first encountered.  If the tree gets deep enough or the
+		 * number of symbolic links to directories is high enough,
+		 * something faster might be worthwhile.
+		 */
+		for (t = p->fts_parent;
+		    t->fts_level >= FTS_ROOTLEVEL; t = t->fts_parent)
+			if (ino == t->fts_ino && dev == t->fts_dev) {
+				p->fts_cycle = t;
+				return (FTS_DC);
+			}
+		return (FTS_D);
+	}
+	if (S_ISLNK(sbp->st_mode))
+		return (FTS_SL);
+	if (S_ISREG(sbp->st_mode))
+		return (FTS_F);
+	return (FTS_DEFAULT);
+}
+
+static FTSENT *
+fts_sort(sp, head, nitems)
+	FTS *sp;
+	FTSENT *head;
+	register int nitems;
+{
+	register FTSENT **ap, *p;
+
+	/*
+	 * Construct an array of pointers to the structures and call qsort(3).
+	 * Reassemble the array in the order returned by qsort.  If unable to
+	 * sort for memory reasons, return the directory entries in their
+	 * current order.  Allocate enough space for the current needs plus
+	 * 40 so don't realloc one entry at a time.
+	 */
+	if (nitems > sp->fts_nitems) {
+		sp->fts_nitems = nitems + 40;
+		if ((sp->fts_array = realloc(sp->fts_array,
+		    (size_t)(sp->fts_nitems * sizeof(FTSENT *)))) == NULL) {
+			sp->fts_nitems = 0;
+			return (head);
+		}
+	}
+	for (ap = sp->fts_array, p = head; p; p = p->fts_link)
+		*ap++ = p;
+	qsort((void *)sp->fts_array, nitems, sizeof(FTSENT *), sp->fts_compar);
+	for (head = *(ap = sp->fts_array); --nitems; ++ap)
+		ap[0]->fts_link = ap[1];
+	ap[0]->fts_link = NULL;
+	return (head);
+}
+
+static FTSENT *
+fts_alloc(sp, name, namelen)
+	FTS *sp;
+	char *name;
+	register int namelen;
+{
+	register FTSENT *p;
+	size_t len;
+
+	/*
+	 * The file name is a variable length array and no stat structure is
+	 * necessary if the user has set the nostat bit.  Allocate the FTSENT
+	 * structure, the file name and the stat structure in one chunk, but
+	 * be careful that the stat structure is reasonably aligned.  Since the
+	 * fts_name field is declared to be of size 1, the fts_name pointer is
+	 * namelen + 2 before the first possible address of the stat structure.
+	 */
+	len = sizeof(FTSENT) + namelen;
+	if (!ISSET(FTS_NOSTAT))
+		len += sizeof(struct stat) + ALIGNBYTES;
+	if ((p = malloc(len)) == NULL)
+		return (NULL);
+
+	/* Copy the name plus the trailing NULL. */
+	memmove(p->fts_name, name, namelen + 1);
+
+	if (!ISSET(FTS_NOSTAT))
+		p->fts_statp = (struct stat *)ALIGN(p->fts_name + namelen + 2);
+	p->fts_namelen = namelen;
+	p->fts_path = sp->fts_path;
+	p->fts_errno = 0;
+	p->fts_flags = 0;
+	p->fts_instr = FTS_NOINSTR;
+	p->fts_number = 0;
+	p->fts_pointer = NULL;
+	return (p);
+}
+
+static void
+fts_lfree(head)
+	register FTSENT *head;
+{
+	register FTSENT *p;
+
+	/* Free a linked list of structures. */
+	while (p = head) {
+		head = head->fts_link;
+		free(p);
+	}
+}
+
+/*
+ * Allow essentially unlimited paths; find, rm, ls should all work on any tree.
+ * Most systems will allow creation of paths much longer than MAXPATHLEN, even
+ * though the kernel won't resolve them.  Add the size (not just what's needed)
+ * plus 256 bytes so don't realloc the path 2 bytes at a time.
+ */
+static int
+fts_palloc(sp, more)
+	FTS *sp;
+	size_t more;
+{
+	sp->fts_pathlen += more + 256;
+	sp->fts_path = realloc(sp->fts_path, (size_t)sp->fts_pathlen);
+	return (sp->fts_path == NULL);
+}
+
+/*
+ * When the path is realloc'd, have to fix all of the pointers in structures
+ * already returned.
+ */
+static void
+fts_padjust(sp, addr)
+	FTS *sp;
+	void *addr;
+{
+	FTSENT *p;
+
+#define	ADJUST(p) {							\
+	(p)->fts_accpath =						\
+	    (char *)addr + ((p)->fts_accpath - (p)->fts_path);		\
+	(p)->fts_path = addr;						\
+}
+	/* Adjust the current set of children. */
+	for (p = sp->fts_child; p; p = p->fts_link)
+		ADJUST(p);
+
+	/* Adjust the rest of the tree. */
+	for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) {
+		ADJUST(p);
+		p = p->fts_link ? p->fts_link : p->fts_parent;
+	}
+}
+
+static size_t
+fts_maxarglen(argv)
+	char * const *argv;
+{
+	size_t len, max;
+
+	for (max = 0; *argv; ++argv)
+		if ((len = strlen(*argv)) > max)
+			max = len;
+	return (max);
+}
diff --git a/lib/libc/gen/getbootfile.3 b/lib/libc/gen/getbootfile.3
new file mode 100644
index 0000000..cfab748
--- /dev/null
+++ b/lib/libc/gen/getbootfile.3
@@ -0,0 +1,71 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     From: @(#)gethostname.3	8.1 (Berkeley) 6/4/93
+.\"	$Id$
+.\"
+.Dd September 23, 1994
+.Dt GETBOOTFILE 3
+.Os
+.Sh NAME
+.Nm getbootfile
+.Nd get kernel boot file name
+.Sh SYNOPSIS
+.Fd #include <paths.h>
+.Ft const char *
+.Fn getbootfile void
+.Sh DESCRIPTION
+The
+.Nm getbootfile
+function retrieves the full pathname of the file from which the
+current kernel was loaded, and returns a static pointer to the name.
+A read/write interface to this information is available via the
+.Xr sysctl 2
+MIB variable
+.Dq Li kern.bootfile .
+.Sh RETURN VALUES
+If the call succeeds a string giving the pathname is returned.  If it
+fails, a a null pointer is returned and an error code is
+placed in the global location
+.Va errno .
+.Sh SEE ALSO
+.Xr sysctl 2
+.Sh BUGS
+If the boot blocks have not been modified to pass this information into
+the kernel at boot time, the static string
+.Dq Pa /kernel
+is returned instead of the real boot file.
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Tn FreeBSD
+2.0.
diff --git a/lib/libc/gen/getbootfile.c b/lib/libc/gen/getbootfile.c
new file mode 100644
index 0000000..3d03851
--- /dev/null
+++ b/lib/libc/gen/getbootfile.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char sccsid[] = "From: @(#)gethostname.c	8.1 (Berkeley) 6/4/93";*/
+static const char rcsid[] =
+	"$Id: getbootfile.c,v 1.1 1994/09/23 20:22:01 wollman Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+const char *
+getbootfile(void)
+{
+	static char name[MAXPATHLEN];
+	size_t size = sizeof name;
+	int mib[2];
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_BOOTFILE;
+	if (sysctl(mib, 2, name, &size, NULL, 0) == -1)
+		return ("/kernel");
+	return (name);
+}
diff --git a/lib/libc/gen/getbsize.3 b/lib/libc/gen/getbsize.3
new file mode 100644
index 0000000..0455573
--- /dev/null
+++ b/lib/libc/gen/getbsize.3
@@ -0,0 +1,79 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getbsize.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETBSIZE 3
+.Os BSD 4.4
+.Sh NAME
+.Nm getbsize
+.Nd get user block size
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft char *
+.Fn getbsize "int *headerlenp" "long *blocksizep"
+.Sh DESCRIPTION
+The
+.Nm getbsize
+function determines the user's preferred block size based on the value of the
+.Dq BLOCKSIZE
+environment variable; see
+.Xr environ 7
+for details on its use and format.
+.Pp
+The
+.Nm getbsize
+function returns a pointer to a null-terminated string describing
+the block size, something like
+.Dq 1K-blocks .
+The memory referenced by
+.Fa headerlenp
+is filled in with the length of the string (not including the
+terminating null).
+The memory referenced by
+.Fa blocksizep
+is filled in with block size, in bytes.
+.Pp
+If the user's block size is unreasonable, a warning message is
+written to standard error and the returned information reflects
+a block size of 512 bytes.
+.Sh SEE ALSO
+.Xr df 1 ,
+.Xr du 1 ,
+.Xr ls 1 ,
+.Xr systat 1 ,
+.Xr environ 7
+.Sh HISTORY
+The
+.Nm getbsize
+function call appeared in
+.Bx 4.4 .
diff --git a/lib/libc/gen/getbsize.c b/lib/libc/gen/getbsize.c
new file mode 100644
index 0000000..fc7b123
--- /dev/null
+++ b/lib/libc/gen/getbsize.c
@@ -0,0 +1,106 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)getbsize.c	8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+char *
+getbsize(headerlenp, blocksizep)
+	int *headerlenp;
+	long *blocksizep;
+{
+	static char header[20];
+	long n, max, mul, blocksize;
+	char *ep, *p, *form;
+
+#define	KB	(1024L)
+#define	MB	(1024L * 1024L)
+#define	GB	(1024L * 1024L * 1024L)
+#define	MAXB	GB		/* No tera, peta, nor exa. */
+	form = "";
+	if ((p = getenv("BLOCKSIZE")) != NULL && *p != '\0') {
+		if ((n = strtol(p, &ep, 10)) < 0)
+			goto underflow;
+		if (n == 0)
+			n = 1;
+		if (*ep && ep[1])
+			goto fmterr;
+		switch (*ep) {
+		case 'G': case 'g':
+			form = "G";
+			max = MAXB / GB;
+			mul = GB;
+			break;
+		case 'K': case 'k':
+			form = "K";
+			max = MAXB / KB;
+			mul = KB;
+			break;
+		case 'M': case 'm':
+			form = "M";
+			max = MAXB / MB;
+			mul = MB;
+			break;
+		case '\0':
+			max = MAXB;
+			mul = 1;
+			break;
+		default:
+fmterr:			warnx("%s: unknown blocksize", p);
+			n = 512;
+			mul = 1;
+			break;
+		}
+		if (n > max) {
+			warnx("maximum blocksize is %dG", MAXB / GB);
+			n = max;
+		}
+		if ((blocksize = n * mul) < 512) {
+underflow:		warnx("minimum blocksize is 512");
+			form = "";
+			blocksize = n = 512;
+		}
+	} else
+		blocksize = n = 512;
+
+	(void)snprintf(header, sizeof(header), "%d%s-blocks", n, form);
+	*headerlenp = strlen(header);
+	*blocksizep = blocksize;
+	return (header);
+}
diff --git a/lib/libc/gen/getcap.3 b/lib/libc/gen/getcap.3
new file mode 100644
index 0000000..c423a98
--- /dev/null
+++ b/lib/libc/gen/getcap.3
@@ -0,0 +1,511 @@
+.\" Copyright (c) 1992, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Casey Leedom of Lawrence Livermore National Laboratory.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)getcap.3	8.3 (Berkeley) 4/19/94
+.\"
+.Dd "April 19, 1994"
+.Dt GETCAP 3 
+.Os
+.Sh NAME
+.Nm cgetent ,
+.Nm cgetset ,
+.Nm cgetmatch ,
+.Nm cgetcap ,
+.Nm cgetnum ,
+.Nm cgetstr ,
+.Nm cgetustr ,
+.Nm cgetfirst ,
+.Nm cgetnext ,
+.Nm cgetclose
+.Nd capability database access routines
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft int
+.Fn cgetent "char **buf" "char **db_array" "char *name"
+.Ft int
+.Fn cgetset "char *ent"
+.Ft int
+.Fn cgetmatch "char *buf" "char *name"
+.Ft char *
+.Fn cgetcap "char *buf" "char *cap" "char type"
+.Ft int
+.Fn cgetnum "char *buf" "char *cap" "long *num"
+.Ft int
+.Fn cgetstr "char *buf" "char *cap" "char **str"
+.Ft int
+.Fn cgetustr "char *buf" "char *cap" "char **str"
+.Ft int
+.Fn cgetfirst "char **buf" "char **db_array"
+.Ft int
+.Fn cgetnext "char **buf" "char **db_array"
+.Ft int
+.Fn cgetclose "void"
+.Sh DESCRIPTION
+.Fn Cgetent
+extracts the capability rec
+.Fa name
+from the database specified by the
+.Dv NULL
+terminated file array
+.Fa db_array
+and returns a pointer to a
+.Xr malloc Ns \&'d
+copy of it in
+.Fa buf .  
+.Nm Cgetent
+will first look for files ending in 
+.Nm .db 
+(see
+.Xr cap_mkdb 1) 
+before accessing the ASCII file.
+.Fa Buf
+must be retained through all subsequent calls to
+.Fn cgetmatch ,
+.Fn cgetcap ,
+.Fn cgetnum ,
+.Fn cgetstr ,
+and
+.Fn cgetustr ,
+but may then be
+.Xr free Ns \&'d.
+On success 0 is returned, 1 if the returned
+record contains an unresolved 
+.Nm tc 
+expansion,
+\-1 if the requested record couldn't be found,
+\-2 if a system error was encountered (couldn't open/read a file, etc.) also
+setting
+.Va errno , 
+and \-3 if a potential reference loop is detected (see
+.Ic tc=
+comments below).
+.Pp
+.Nm Cgetset 
+enables the addition of a character buffer containing a single capability
+record entry
+to the capability database.  
+Conceptually, the entry is added as the first ``file'' in the database, and
+is therefore searched first on the call to 
+.Nm cgetent .
+The entry is passed in 
+.Fa ent .
+If 
+.Fa ent 
+is
+.Dv NULL ,
+the current entry is removed from the database.  
+.Nm Cgetset 
+must precede the database traversal.  It must be called before the 
+.Nm cgetent 
+call. If a sequential access is being performed (see below), it must be called
+before the first sequential access call (
+.Nm cgetfirst
+or
+.Nm cgetnext
+), or be directly preceded by a 
+.Nm cgetclose
+call.
+On success 0 is returned and \-1 on failure.
+.Pp
+.Nm Cgetmatch
+will return 0 if
+.Fa name
+is one of the names of the capability record
+.Fa buf ,
+\-1 if
+not.
+.Pp
+.Nm Cgetcap
+searches the capability record
+.Fa buf
+for the capability
+.Fa cap
+with type
+.Fa type .
+A
+.Fa type
+is specified using any single character.  If a colon (`:') is used, an
+untyped capability will be searched for (see below for explanation of
+types).  A pointer to the value of
+.Fa cap
+in
+.Fa buf
+is returned on success,
+.Dv NULL
+if the requested capability couldn't be
+found.  The end of the capability value is signaled by a `:' or
+.Tn ASCII
+.Dv NUL
+(see below for capability database syntax).
+.Pp
+.Nm Cgetnum
+retrieves the value of the numeric capability
+.Fa cap
+from the capability record pointed to by
+.Fa buf .
+The numeric value is returned in the
+.Ft long
+pointed to by
+.Fa num .
+0 is returned on success, \-1 if the requested numeric capability couldn't
+be found.
+.Pp
+.Nm Cgetstr
+retrieves the value of the string capability
+.Fa cap
+from the capability record pointed to by
+.Fa buf .
+A pointer to a decoded,
+.Dv NUL
+terminated,
+.Xr malloc Ns \&'d
+copy of the string is returned in the
+.Ft char *
+pointed to by
+.Fa str .
+The number of characters in the decoded string not including the trailing
+.Dv NUL
+is returned on success, \-1 if the requested string capability couldn't
+be found, \-2 if a system error was encountered (storage allocation
+failure).
+.Pp
+.Nm Cgetustr
+is identical to 
+.Nm cgetstr 
+except that it does not expand special characters, but rather returns each
+character of the capability string literally.
+.Pp
+.Nm Cgetfirst ,
+.Nm cgetnext , 
+comprise a function group that provides for sequential
+access of the
+.Dv NULL
+pointer terminated array of file names,
+.Fa db_array .
+.Nm Cgetfirst 
+returns the first record in the database and resets the access
+to the first record.
+.Nm Cgetnext 
+returns the next record in the database with respect to the
+record returned by the previous
+.Nm cgetfirst
+or
+.Nm cgetnext 
+call.  If there is no such previous call, the first record in the database is
+returned.
+Each record is returned in a
+.Xr malloc Ns \&'d 
+copy pointed to by 
+.Fa buf .  
+.Ic Tc
+expansion is done (see
+.Ic tc= 
+comments below).
+Upon completion of the database 0 is returned,  1 is returned upon successful
+return of record with possibly more remaining (we haven't reached the end of 
+the database yet), 2 is returned if the record contains an unresolved
+.Nm tc 
+expansion, \-1 is returned if an system error occurred, and \-2
+is returned if a potential reference loop is detected (see 
+.Ic tc=
+comments below).
+Upon completion of database (0 return) the database is closed.
+.Pp
+.Nm Cgetclose 
+closes the sequential access and frees any memory and file descriptors 
+being used.  Note that it does not erase the buffer pushed by a call to 
+.Nm cgetset .
+.Sh CAPABILITY DATABASE SYNTAX
+Capability databases are normally
+.Tn ASCII
+and may be edited with standard
+text editors.  Blank lines and lines beginning with a `#' are comments
+and are ignored.  Lines ending with a `\|\e' indicate that the next line
+is a continuation of the current line; the `\|\e' and following newline
+are ignored.  Long lines are usually continued onto several physical
+lines by ending each line except the last with a `\|\e'.
+.Pp
+Capability databases consist of a series of records, one per logical
+line.  Each record contains a variable number of `:'-separated fields
+(capabilities).  Empty fields consisting entirely of white space
+characters (spaces and tabs) are ignored.
+.Pp
+The first capability of each record specifies its names, separated by `|'
+characters.  These names are used to reference records in the database.
+By convention, the last name is usually a comment and is not intended as
+a lookup tag.  For example, the
+.Em vt100
+record from the
+.Nm termcap
+database begins:
+.Pp
+.Dl "d0\||\|vt100\||\|vt100-am\||\|vt100am\||\|dec vt100:"
+.Pp
+giving four names that can be used to access the record.
+.Pp
+The remaining non-empty capabilities describe a set of (name, value)
+bindings, consisting of a names optionally followed by a typed values:
+.Bl -column "nameTvalue"
+.It name Ta "typeless [boolean] capability"
+.Em name No "is present [true]"
+.It name Ns Em \&T Ns value Ta capability
+.Pq Em name , \&T
+has value
+.Em value
+.It name@ Ta "no capability" Em name No exists
+.It name Ns Em T Ns \&@ Ta capability
+.Pq Em name , T
+does not exist
+.El
+.Pp
+Names consist of one or more characters.  Names may contain any character
+except `:', but it's usually best to restrict them to the printable
+characters and avoid use of graphics like `#', `=', `%', `@', etc.  Types
+are single characters used to separate capability names from their
+associated typed values.  Types may be any character except a `:'.
+Typically, graphics like `#', `=', `%', etc. are used.  Values may be any
+number of characters and may contain any character except `:'.
+.Sh CAPABILITY DATABASE SEMANTICS
+Capability records describe a set of (name, value) bindings.  Names may
+have multiple values bound to them.  Different values for a name are
+distinguished by their
+.Fa types .
+.Nm Cgetcap
+will return a pointer to a value of a name given the capability name and
+the type of the value.
+.Pp
+The types `#' and `=' are conventionally used to denote numeric and
+string typed values, but no restriction on those types is enforced.  The
+functions
+.Nm cgetnum
+and
+.Nm cgetstr
+can be used to implement the traditional syntax and semantics of `#'
+and `='.
+Typeless capabilities are typically used to denote boolean objects with
+presence or absence indicating truth and false values respectively.
+This interpretation is conveniently represented by:
+.Pp
+.Dl "(getcap(buf, name, ':') != NULL)"
+.Pp
+A special capability,
+.Ic tc= name ,
+is used to indicate that the record specified by
+.Fa name
+should be substituted for the
+.Ic tc
+capability.
+.Ic Tc
+capabilities may interpolate records which also contain
+.Ic tc
+capabilities and more than one
+.Ic tc
+capability may be used in a record.  A
+.Ic tc
+expansion scope (i.e., where the argument is searched for) contains the
+file in which the
+.Ic tc
+is declared and all subsequent files in the file array.
+.Pp
+When a database is searched for a capability record, the first matching
+record in the search is returned.  When a record is scanned for a
+capability, the first matching capability is returned; the capability
+.Ic :nameT@:
+will hide any following definition of a value of type
+.Em T
+for
+.Fa name ;
+and the capability
+.Ic :name@:
+will prevent any following values of
+.Fa name
+from being seen.
+.Pp
+These features combined with
+.Ic tc
+capabilities can be used to generate variations of other databases and
+records by either adding new capabilities, overriding definitions with new
+definitions, or hiding following definitions via `@' capabilities.
+.Sh EXAMPLES
+.Bd -unfilled -offset indent
+example\||\|an example of binding multiple values to names:\e
+	:foo%bar:foo^blah:foo@:\e
+	:abc%xyz:abc^frap:abc$@:\e
+	:tc=more:
+.Ed
+.Pp
+The capability foo has two values bound to it (bar of type `%' and blah of
+type `^') and any other value bindings are hidden.  The capability abc
+also has two values bound but only a value of type `$' is prevented from
+being defined in the capability record more.
+.Pp
+.Bd -unfilled -offset indent
+file1:
+ 	new\||\|new_record\||\|a modification of "old":\e
+		:fript=bar:who-cares@:tc=old:blah:tc=extensions:
+file2:
+	old\||\|old_record\||\|an old database record:\e
+		:fript=foo:who-cares:glork#200:
+.Ed
+.Pp
+The records are extracted by calling
+.Nm cgetent
+with file1 preceding file2.
+In the capability record new in file1, fript=bar overrides the definition
+of fript=foo interpolated from the capability record old in file2,
+who-cares@ prevents the definition of any who-cares definitions in old
+from being seen, glork#200 is inherited from old, and blah and anything
+defined by the record extensions is added to those definitions in old.
+Note that the position of the fript=bar and who-cares@ definitions before
+tc=old is important here.  If they were after, the definitions in old
+would take precedence.
+.Sh CGETNUM AND CGETSTR SYNTAX AND SEMANTICS
+Two types are predefined by
+.Nm cgetnum
+and
+.Nm cgetstr :
+.Bl -column "nameXnumber"
+.Sm off
+.It Em name No \&# Em number Ta numeric
+capability
+.Em name
+has value
+.Em number
+.It Em name No = Em string Ta "string capability"
+.Em name
+has value 
+.Em string
+.It Em name No \&#@ Ta "the numeric capability"
+.Em name
+does not exist
+.It Em name No \&=@ Ta "the string capability"
+.Em name
+does not exist
+.El
+.Pp
+Numeric capability values may be given in one of three numeric bases.
+If the number starts with either
+.Ql 0x
+or
+.Ql 0X
+it is interpreted as a hexadecimal number (both upper and lower case a-f
+may be used to denote the extended hexadecimal digits).
+Otherwise, if the number starts with a
+.Ql 0
+it is interpreted as an octal number.
+Otherwise the number is interpreted as a decimal number.
+.Pp
+String capability values may contain any character.  Non-printable
+.Dv ASCII
+codes, new lines, and colons may be conveniently represented by the use
+of escape sequences:
+.Bl -column "\e\|X,X\e\|X" "(ASCII octal nnn)"
+^X	('\fIX\fP' & 037)	control-\fIX\fP
+\e\|b, \e\|B	(ASCII 010)	backspace
+\e\|t, \e\|T	(ASCII 011)	tab
+\e\|n, \e\|N	(ASCII 012)	line feed (newline)
+\e\|f, \e\|F	(ASCII 014)	form feed
+\e\|r, \e\|R	(ASCII 015)	carriage return
+\e\|e, \e\|E	(ASCII 027)	escape
+\e\|c, \e\|C	(:)	colon
+\e\|\e	(\e\|)	back slash
+\e\|^	(^)	caret
+\e\|\fInnn\fP	(ASCII octal \fInnn\fP)
+.El
+.Pp
+A `\|\e' may be followed by up to three octal digits directly specifies
+the numeric code for a character.  The use of
+.Tn ASCII
+.Dv NUL Ns s ,
+while easily
+encoded, causes all sorts of problems and must be used with care since
+.Dv NUL Ns s
+are typically used to denote the end of strings; many applications
+use `\e\|200' to represent a
+.Dv NUL .
+.Sh DIAGNOSTICS
+.Nm Cgetent ,
+.Nm cgetset ,
+.Nm cgetmatch ,
+.Nm cgetnum ,
+.Nm cgetstr ,
+.Nm cgetustr ,
+.Nm cgetfirst ,
+and
+.Nm cgetnext
+return a value greater than or equal to 0 on success and a value less
+than 0 on failure.
+.Nm Cgetcap
+returns a character pointer on success and a
+.Dv NULL
+on failure.
+.Pp
+.Nm Cgetent ,
+and 
+.Nm cgetseq
+may fail and set 
+.Va errno
+for any of the errors specified for the library functions:
+.Xr fopen 2 , 
+.Xr fclose 2 ,
+.Xr open 2 ,
+and 
+.Xr close 2 .
+.Pp
+.Nm Cgetent ,
+.Nm cgetset ,
+.Nm cgetstr ,
+and
+.Nm cgetustr 
+may fail and set 
+.Va errno 
+as follows:
+.Bl -tag -width Er
+.It Bq Er ENOMEM
+No memory to allocate.
+.El
+.Sh SEE ALSO
+.Xr cap_mkdb 1 ,
+.Xr malloc 3
+.Sh BUGS
+Colons (`:') can't be used in names, types, or values.
+.Pp
+There are no checks for
+.Ic tc= name
+loops in
+.Nm cgetent .
+.Pp
+The buffer added to the database by a call to 
+.Nm cgetset 
+is not unique to the database but is rather prepended to any database used.
diff --git a/lib/libc/gen/getcap.c b/lib/libc/gen/getcap.c
new file mode 100644
index 0000000..93d1952
--- /dev/null
+++ b/lib/libc/gen/getcap.c
@@ -0,0 +1,1049 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Casey Leedom of Lawrence Livermore National Laboratory.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getcap.c	8.3 (Berkeley) 3/25/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <db.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define	BFRAG		1024
+#define	BSIZE		1024
+#define	ESC		('[' & 037)	/* ASCII ESC */
+#define	MAX_RECURSION	32		/* maximum getent recursion */
+#define	SFRAG		100		/* cgetstr mallocs in SFRAG chunks */
+
+#define RECOK	(char)0
+#define TCERR	(char)1
+#define	SHADOW	(char)2
+
+static size_t	 topreclen;	/* toprec length */
+static char	*toprec;	/* Additional record specified by cgetset() */
+static int	 gottoprec;	/* Flag indicating retrieval of toprecord */
+
+static int	cdbget __P((DB *, char **, char *));
+static int 	getent __P((char **, u_int *, char **, int, char *, int, char *));
+static int	nfcmp __P((char *, char *));
+
+/*
+ * Cgetset() allows the addition of a user specified buffer to be added
+ * to the database array, in effect "pushing" the buffer on top of the
+ * virtual database. 0 is returned on success, -1 on failure.
+ */
+int
+cgetset(ent)
+	char *ent;
+{
+	if (ent == NULL) {
+		if (toprec)
+			free(toprec);
+                toprec = NULL;
+                topreclen = 0;
+                return (0);
+        }
+        topreclen = strlen(ent);
+        if ((toprec = malloc (topreclen + 1)) == NULL) {
+		errno = ENOMEM;
+                return (-1);
+	}
+	gottoprec = 0;
+        (void)strcpy(toprec, ent);
+        return (0);
+}
+
+/*
+ * Cgetcap searches the capability record buf for the capability cap with
+ * type `type'.  A pointer to the value of cap is returned on success, NULL
+ * if the requested capability couldn't be found.
+ *
+ * Specifying a type of ':' means that nothing should follow cap (:cap:).
+ * In this case a pointer to the terminating ':' or NUL will be returned if
+ * cap is found.
+ *
+ * If (cap, '@') or (cap, terminator, '@') is found before (cap, terminator)
+ * return NULL.
+ */
+char *
+cgetcap(buf, cap, type)
+	char *buf, *cap;
+	int type;
+{
+	register char *bp, *cp;
+
+	bp = buf;
+	for (;;) {
+		/*
+		 * Skip past the current capability field - it's either the
+		 * name field if this is the first time through the loop, or
+		 * the remainder of a field whose name failed to match cap.
+		 */
+		for (;;)
+			if (*bp == '\0')
+				return (NULL);
+			else
+				if (*bp++ == ':')
+					break;
+
+		/*
+		 * Try to match (cap, type) in buf.
+		 */
+		for (cp = cap; *cp == *bp && *bp != '\0'; cp++, bp++)
+			continue;
+		if (*cp != '\0')
+			continue;
+		if (*bp == '@')
+			return (NULL);
+		if (type == ':') {
+			if (*bp != '\0' && *bp != ':')
+				continue;
+			return(bp);
+		}
+		if (*bp != type)
+			continue;
+		bp++;
+		return (*bp == '@' ? NULL : bp);
+	}
+	/* NOTREACHED */
+}
+
+/*
+ * Cgetent extracts the capability record name from the NULL terminated file
+ * array db_array and returns a pointer to a malloc'd copy of it in buf.
+ * Buf must be retained through all subsequent calls to cgetcap, cgetnum,
+ * cgetflag, and cgetstr, but may then be free'd.  0 is returned on success,
+ * -1 if the requested record couldn't be found, -2 if a system error was
+ * encountered (couldn't open/read a file, etc.), and -3 if a potential
+ * reference loop is detected.
+ */
+int
+cgetent(buf, db_array, name)
+	char **buf, **db_array, *name;
+{
+	u_int dummy;
+
+	return (getent(buf, &dummy, db_array, -1, name, 0, NULL));
+}
+
+/*
+ * Getent implements the functions of cgetent.  If fd is non-negative,
+ * *db_array has already been opened and fd is the open file descriptor.  We
+ * do this to save time and avoid using up file descriptors for tc=
+ * recursions.
+ *
+ * Getent returns the same success/failure codes as cgetent.  On success, a
+ * pointer to a malloc'ed capability record with all tc= capabilities fully
+ * expanded and its length (not including trailing ASCII NUL) are left in
+ * *cap and *len.
+ *
+ * Basic algorithm:
+ *	+ Allocate memory incrementally as needed in chunks of size BFRAG
+ *	  for capability buffer.
+ *	+ Recurse for each tc=name and interpolate result.  Stop when all
+ *	  names interpolated, a name can't be found, or depth exceeds
+ *	  MAX_RECURSION.
+ */
+static int
+getent(cap, len, db_array, fd, name, depth, nfield)
+	char **cap, **db_array, *name, *nfield;
+	u_int *len;
+	int fd, depth;
+{
+	DB *capdbp;
+	register char *r_end, *rp, **db_p;
+	int myfd, eof, foundit, retval, clen;
+	char *record, *cbuf;
+	int tc_not_resolved;
+	char pbuf[_POSIX_PATH_MAX];
+
+	/*
+	 * Return with ``loop detected'' error if we've recursed more than
+	 * MAX_RECURSION times.
+	 */
+	if (depth > MAX_RECURSION)
+		return (-3);
+
+	/*
+	 * Check if we have a top record from cgetset().
+         */
+	if (depth == 0 && toprec != NULL && cgetmatch(toprec, name) == 0) {
+		if ((record = malloc (topreclen + BFRAG)) == NULL) {
+			errno = ENOMEM;
+			return (-2);
+		}
+		(void)strcpy(record, toprec);
+		myfd = 0;
+		db_p = db_array;
+		rp = record + topreclen + 1;
+		r_end = rp + BFRAG;
+		goto tc_exp;
+	}
+	/*
+	 * Allocate first chunk of memory.
+	 */
+	if ((record = malloc(BFRAG)) == NULL) {
+		errno = ENOMEM;
+		return (-2);
+	}
+	r_end = record + BFRAG;
+	foundit = 0;
+	/*
+	 * Loop through database array until finding the record.
+	 */
+
+	for (db_p = db_array; *db_p != NULL; db_p++) {
+		eof = 0;
+
+		/*
+		 * Open database if not already open.
+		 */
+
+		if (fd >= 0) {
+			(void)lseek(fd, (off_t)0, L_SET);
+			myfd = 0;
+		} else {
+			(void)snprintf(pbuf, sizeof(pbuf), "%s.db", *db_p);
+			if ((capdbp = dbopen(pbuf, O_RDONLY, 0, DB_HASH, 0))
+			     != NULL) {
+				free(record);
+				retval = cdbget(capdbp, &record, name);
+				if (retval < 0) {
+					/* no record available */
+					(void)capdbp->close(capdbp);
+					return (retval);
+				}
+				/* save the data; close frees it */
+				clen = strlen(record);
+				cbuf = malloc(clen + 1);
+				memcpy(cbuf, record, clen + 1);
+				if (capdbp->close(capdbp) < 0) {
+					free(cbuf);
+					return (-2);
+				}
+				*len = clen;
+				*cap = cbuf;
+				return (retval);
+			} else {
+				fd = open(*db_p, O_RDONLY, 0);
+				if (fd < 0) {
+					/* No error on unfound file. */
+					if (errno == ENOENT)
+						continue;
+					free(record);
+					return (-2);
+				}
+				myfd = 1;
+			}
+		}
+		/*
+		 * Find the requested capability record ...
+		 */
+		{
+		char buf[BUFSIZ];
+		register char *b_end, *bp;
+		register int c;
+
+		/*
+		 * Loop invariants:
+		 *	There is always room for one more character in record.
+		 *	R_end always points just past end of record.
+		 *	Rp always points just past last character in record.
+		 *	B_end always points just past last character in buf.
+		 *	Bp always points at next character in buf.
+		 */
+		b_end = buf;
+		bp = buf;
+		for (;;) {
+
+			/*
+			 * Read in a line implementing (\, newline)
+			 * line continuation.
+			 */
+			rp = record;
+			for (;;) {
+				if (bp >= b_end) {
+					int n;
+
+					n = read(fd, buf, sizeof(buf));
+					if (n <= 0) {
+						if (myfd)
+							(void)close(fd);
+						if (n < 0) {
+							free(record);
+							return (-2);
+						} else {
+							fd = -1;
+							eof = 1;
+							break;
+						}
+					}
+					b_end = buf+n;
+					bp = buf;
+				}
+
+				c = *bp++;
+				if (c == '\n') {
+					if (rp > record && *(rp-1) == '\\') {
+						rp--;
+						continue;
+					} else
+						break;
+				}
+				*rp++ = c;
+
+				/*
+				 * Enforce loop invariant: if no room
+				 * left in record buffer, try to get
+				 * some more.
+				 */
+				if (rp >= r_end) {
+					u_int pos;
+					size_t newsize;
+
+					pos = rp - record;
+					newsize = r_end - record + BFRAG;
+					record = realloc(record, newsize);
+					if (record == NULL) {
+						errno = ENOMEM;
+						if (myfd)
+							(void)close(fd);
+						return (-2);
+					}
+					r_end = record + newsize;
+					rp = record + pos;
+				}
+			}
+				/* loop invariant let's us do this */
+			*rp++ = '\0';
+
+			/*
+			 * If encountered eof check next file.
+			 */
+			if (eof)
+				break;
+
+			/*
+			 * Toss blank lines and comments.
+			 */
+			if (*record == '\0' || *record == '#')
+				continue;
+
+			/*
+			 * See if this is the record we want ...
+			 */
+			if (cgetmatch(record, name) == 0) {
+				if (nfield == NULL || !nfcmp(nfield, record)) {
+					foundit = 1;
+					break;	/* found it! */
+				}
+			}
+		}
+	}
+		if (foundit)
+			break;
+	}
+
+	if (!foundit)
+		return (-1);
+
+	/*
+	 * Got the capability record, but now we have to expand all tc=name
+	 * references in it ...
+	 */
+tc_exp:	{
+		register char *newicap, *s;
+		register int newilen;
+		u_int ilen;
+		int diff, iret, tclen;
+		char *icap, *scan, *tc, *tcstart, *tcend;
+
+		/*
+		 * Loop invariants:
+		 *	There is room for one more character in record.
+		 *	R_end points just past end of record.
+		 *	Rp points just past last character in record.
+		 *	Scan points at remainder of record that needs to be
+		 *	scanned for tc=name constructs.
+		 */
+		scan = record;
+		tc_not_resolved = 0;
+		for (;;) {
+			if ((tc = cgetcap(scan, "tc", '=')) == NULL)
+				break;
+
+			/*
+			 * Find end of tc=name and stomp on the trailing `:'
+			 * (if present) so we can use it to call ourselves.
+			 */
+			s = tc;
+			for (;;)
+				if (*s == '\0')
+					break;
+				else
+					if (*s++ == ':') {
+						*(s - 1) = '\0';
+						break;
+					}
+			tcstart = tc - 3;
+			tclen = s - tcstart;
+			tcend = s;
+
+			iret = getent(&icap, &ilen, db_p, fd, tc, depth+1,
+				      NULL);
+			newicap = icap;		/* Put into a register. */
+			newilen = ilen;
+			if (iret != 0) {
+				/* an error */
+				if (iret < -1) {
+					if (myfd)
+						(void)close(fd);
+					free(record);
+					return (iret);
+				}
+				if (iret == 1)
+					tc_not_resolved = 1;
+				/* couldn't resolve tc */
+				if (iret == -1) {
+					*(s - 1) = ':';
+					scan = s - 1;
+					tc_not_resolved = 1;
+					continue;
+
+				}
+			}
+			/* not interested in name field of tc'ed record */
+			s = newicap;
+			for (;;)
+				if (*s == '\0')
+					break;
+				else
+					if (*s++ == ':')
+						break;
+			newilen -= s - newicap;
+			newicap = s;
+
+			/* make sure interpolated record is `:'-terminated */
+			s += newilen;
+			if (*(s-1) != ':') {
+				*s = ':';	/* overwrite NUL with : */
+				newilen++;
+			}
+
+			/*
+			 * Make sure there's enough room to insert the
+			 * new record.
+			 */
+			diff = newilen - tclen;
+			if (diff >= r_end - rp) {
+				u_int pos, tcpos, tcposend;
+				size_t newsize;
+
+				pos = rp - record;
+				newsize = r_end - record + diff + BFRAG;
+				tcpos = tcstart - record;
+				tcposend = tcend - record;
+				record = realloc(record, newsize);
+				if (record == NULL) {
+					errno = ENOMEM;
+					if (myfd)
+						(void)close(fd);
+					free(icap);
+					return (-2);
+				}
+				r_end = record + newsize;
+				rp = record + pos;
+				tcstart = record + tcpos;
+				tcend = record + tcposend;
+			}
+
+			/*
+			 * Insert tc'ed record into our record.
+			 */
+			s = tcstart + newilen;
+			bcopy(tcend, s, rp - tcend);
+			bcopy(newicap, tcstart, newilen);
+			rp += diff;
+			free(icap);
+
+			/*
+			 * Start scan on `:' so next cgetcap works properly
+			 * (cgetcap always skips first field).
+			 */
+			scan = s-1;
+		}
+
+	}
+	/*
+	 * Close file (if we opened it), give back any extra memory, and
+	 * return capability, length and success.
+	 */
+	if (myfd)
+		(void)close(fd);
+	*len = rp - record - 1;	/* don't count NUL */
+	if (r_end > rp)
+		if ((record =
+		     realloc(record, (size_t)(rp - record))) == NULL) {
+			errno = ENOMEM;
+			return (-2);
+		}
+
+	*cap = record;
+	if (tc_not_resolved)
+		return (1);
+	return (0);
+}
+
+static int
+cdbget(capdbp, bp, name)
+	DB *capdbp;
+	char **bp, *name;
+{
+	DBT key, data;
+
+	key.data = name;
+	key.size = strlen(name);
+
+	for (;;) {
+		/* Get the reference. */
+		switch(capdbp->get(capdbp, &key, &data, 0)) {
+		case -1:
+			return (-2);
+		case 1:
+			return (-1);
+		}
+
+		/* If not an index to another record, leave. */
+		if (((char *)data.data)[0] != SHADOW)
+			break;
+
+		key.data = (char *)data.data + 1;
+		key.size = data.size - 1;
+	}
+
+	*bp = (char *)data.data + 1;
+	return (((char *)(data.data))[0] == TCERR ? 1 : 0);
+}
+
+/*
+ * Cgetmatch will return 0 if name is one of the names of the capability
+ * record buf, -1 if not.
+ */
+int
+cgetmatch(buf, name)
+	char *buf, *name;
+{
+	register char *np, *bp;
+
+	/*
+	 * Start search at beginning of record.
+	 */
+	bp = buf;
+	for (;;) {
+		/*
+		 * Try to match a record name.
+		 */
+		np = name;
+		for (;;)
+			if (*np == '\0')
+				if (*bp == '|' || *bp == ':' || *bp == '\0')
+					return (0);
+				else
+					break;
+			else
+				if (*bp++ != *np++)
+					break;
+
+		/*
+		 * Match failed, skip to next name in record.
+		 */
+		bp--;	/* a '|' or ':' may have stopped the match */
+		for (;;)
+			if (*bp == '\0' || *bp == ':')
+				return (-1);	/* match failed totally */
+			else
+				if (*bp++ == '|')
+					break;	/* found next name */
+	}
+}
+
+
+
+
+
+int
+cgetfirst(buf, db_array)
+	char **buf, **db_array;
+{
+	(void)cgetclose();
+	return (cgetnext(buf, db_array));
+}
+
+static FILE *pfp;
+static int slash;
+static char **dbp;
+
+int
+cgetclose()
+{
+	if (pfp != NULL) {
+		(void)fclose(pfp);
+		pfp = NULL;
+	}
+	dbp = NULL;
+	gottoprec = 0;
+	slash = 0;
+	return(0);
+}
+
+/*
+ * Cgetnext() gets either the first or next entry in the logical database
+ * specified by db_array.  It returns 0 upon completion of the database, 1
+ * upon returning an entry with more remaining, and -1 if an error occurs.
+ */
+int
+cgetnext(bp, db_array)
+        register char **bp;
+	char **db_array;
+{
+	size_t len;
+	int status, i, done;
+	char *cp, *line, *rp, *np, buf[BSIZE], nbuf[BSIZE];
+	u_int dummy;
+
+	if (dbp == NULL)
+		dbp = db_array;
+
+	if (pfp == NULL && (pfp = fopen(*dbp, "r")) == NULL) {
+		(void)cgetclose();
+		return (-1);
+	}
+	for(;;) {
+		if (toprec && !gottoprec) {
+			gottoprec = 1;
+			line = toprec;
+		} else {
+			line = fgetln(pfp, &len);
+			if (line == NULL && pfp) {
+				(void)fclose(pfp);
+				if (ferror(pfp)) {
+					(void)cgetclose();
+					return (-1);
+				} else {
+					if (*++dbp == NULL) {
+						(void)cgetclose();
+						return (0);
+					} else if ((pfp =
+					    fopen(*dbp, "r")) == NULL) {
+						(void)cgetclose();
+						return (-1);
+					} else
+						continue;
+				}
+			} else
+				line[len - 1] = '\0';
+			if (len == 1) {
+				slash = 0;
+				continue;
+			}
+			if (isspace(*line) ||
+			    *line == ':' || *line == '#' || slash) {
+				if (line[len - 2] == '\\')
+					slash = 1;
+				else
+					slash = 0;
+				continue;
+			}
+			if (line[len - 2] == '\\')
+				slash = 1;
+			else
+				slash = 0;
+		}
+
+
+		/*
+		 * Line points to a name line.
+		 */
+		i = 0;
+		done = 0;
+		np = nbuf;
+		for (;;) {
+			for (cp = line; *cp != '\0'; cp++) {
+				if (*cp == ':') {
+					*np++ = ':';
+					done = 1;
+					break;
+				}
+				if (*cp == '\\')
+					break;
+				*np++ = *cp;
+			}
+			if (done) {
+				*np = '\0';
+				break;
+			} else { /* name field extends beyond the line */
+				line = fgetln(pfp, &len);
+				if (line == NULL && pfp) {
+					(void)fclose(pfp);
+					if (ferror(pfp)) {
+						(void)cgetclose();
+						return (-1);
+					}
+				} else
+					line[len - 1] = '\0';
+			}
+		}
+		rp = buf;
+		for(cp = nbuf; *cp != NULL; cp++)
+			if (*cp == '|' || *cp == ':')
+				break;
+			else
+				*rp++ = *cp;
+
+		*rp = '\0';
+		/*
+		 * XXX
+		 * Last argument of getent here should be nbuf if we want true
+		 * sequential access in the case of duplicates.
+		 * With NULL, getent will return the first entry found
+		 * rather than the duplicate entry record.  This is a
+		 * matter of semantics that should be resolved.
+		 */
+		status = getent(bp, &dummy, db_array, -1, buf, 0, NULL);
+		if (status == -2 || status == -3)
+			(void)cgetclose();
+
+		return (status + 1);
+	}
+	/* NOTREACHED */
+}
+
+/*
+ * Cgetstr retrieves the value of the string capability cap from the
+ * capability record pointed to by buf.  A pointer to a decoded, NUL
+ * terminated, malloc'd copy of the string is returned in the char *
+ * pointed to by str.  The length of the string not including the trailing
+ * NUL is returned on success, -1 if the requested string capability
+ * couldn't be found, -2 if a system error was encountered (storage
+ * allocation failure).
+ */
+int
+cgetstr(buf, cap, str)
+	char *buf, *cap;
+	char **str;
+{
+	register u_int m_room;
+	register char *bp, *mp;
+	int len;
+	char *mem;
+
+	/*
+	 * Find string capability cap
+	 */
+	bp = cgetcap(buf, cap, '=');
+	if (bp == NULL)
+		return (-1);
+
+	/*
+	 * Conversion / storage allocation loop ...  Allocate memory in
+	 * chunks SFRAG in size.
+	 */
+	if ((mem = malloc(SFRAG)) == NULL) {
+		errno = ENOMEM;
+		return (-2);	/* couldn't even allocate the first fragment */
+	}
+	m_room = SFRAG;
+	mp = mem;
+
+	while (*bp != ':' && *bp != '\0') {
+		/*
+		 * Loop invariants:
+		 *	There is always room for one more character in mem.
+		 *	Mp always points just past last character in mem.
+		 *	Bp always points at next character in buf.
+		 */
+		if (*bp == '^') {
+			bp++;
+			if (*bp == ':' || *bp == '\0')
+				break;	/* drop unfinished escape */
+			if (*bp == '?') {
+				*mp++ = '\177';
+				bp++;
+			} else
+				*mp++ = *bp++ & 037;
+		} else if (*bp == '\\') {
+			bp++;
+			if (*bp == ':' || *bp == '\0')
+				break;	/* drop unfinished escape */
+			if ('0' <= *bp && *bp <= '7') {
+				register int n, i;
+
+				n = 0;
+				i = 3;	/* maximum of three octal digits */
+				do {
+					n = n * 8 + (*bp++ - '0');
+				} while (--i && '0' <= *bp && *bp <= '7');
+				*mp++ = n;
+			}
+			else switch (*bp++) {
+				case 'b': case 'B':
+					*mp++ = '\b';
+					break;
+				case 't': case 'T':
+					*mp++ = '\t';
+					break;
+				case 'n': case 'N':
+					*mp++ = '\n';
+					break;
+				case 'f': case 'F':
+					*mp++ = '\f';
+					break;
+				case 'r': case 'R':
+					*mp++ = '\r';
+					break;
+				case 'e': case 'E':
+					*mp++ = ESC;
+					break;
+				case 'c': case 'C':
+					*mp++ = ':';
+					break;
+				default:
+					/*
+					 * Catches '\', '^', and
+					 *  everything else.
+					 */
+					*mp++ = *(bp-1);
+					break;
+			}
+		} else
+			*mp++ = *bp++;
+		m_room--;
+
+		/*
+		 * Enforce loop invariant: if no room left in current
+		 * buffer, try to get some more.
+		 */
+		if (m_room == 0) {
+			size_t size = mp - mem;
+
+			if ((mem = realloc(mem, size + SFRAG)) == NULL)
+				return (-2);
+			m_room = SFRAG;
+			mp = mem + size;
+		}
+	}
+	*mp++ = '\0';	/* loop invariant let's us do this */
+	m_room--;
+	len = mp - mem - 1;
+
+	/*
+	 * Give back any extra memory and return value and success.
+	 */
+	if (m_room != 0)
+		if ((mem = realloc(mem, (size_t)(mp - mem))) == NULL)
+			return (-2);
+	*str = mem;
+	return (len);
+}
+
+/*
+ * Cgetustr retrieves the value of the string capability cap from the
+ * capability record pointed to by buf.  The difference between cgetustr()
+ * and cgetstr() is that cgetustr does not decode escapes but rather treats
+ * all characters literally.  A pointer to a  NUL terminated malloc'd
+ * copy of the string is returned in the char pointed to by str.  The
+ * length of the string not including the trailing NUL is returned on success,
+ * -1 if the requested string capability couldn't be found, -2 if a system
+ * error was encountered (storage allocation failure).
+ */
+int
+cgetustr(buf, cap, str)
+	char *buf, *cap, **str;
+{
+	register u_int m_room;
+	register char *bp, *mp;
+	int len;
+	char *mem;
+
+	/*
+	 * Find string capability cap
+	 */
+	if ((bp = cgetcap(buf, cap, '=')) == NULL)
+		return (-1);
+
+	/*
+	 * Conversion / storage allocation loop ...  Allocate memory in
+	 * chunks SFRAG in size.
+	 */
+	if ((mem = malloc(SFRAG)) == NULL) {
+		errno = ENOMEM;
+		return (-2);	/* couldn't even allocate the first fragment */
+	}
+	m_room = SFRAG;
+	mp = mem;
+
+	while (*bp != ':' && *bp != '\0') {
+		/*
+		 * Loop invariants:
+		 *	There is always room for one more character in mem.
+		 *	Mp always points just past last character in mem.
+		 *	Bp always points at next character in buf.
+		 */
+		*mp++ = *bp++;
+		m_room--;
+
+		/*
+		 * Enforce loop invariant: if no room left in current
+		 * buffer, try to get some more.
+		 */
+		if (m_room == 0) {
+			size_t size = mp - mem;
+
+			if ((mem = realloc(mem, size + SFRAG)) == NULL)
+				return (-2);
+			m_room = SFRAG;
+			mp = mem + size;
+		}
+	}
+	*mp++ = '\0';	/* loop invariant let's us do this */
+	m_room--;
+	len = mp - mem - 1;
+
+	/*
+	 * Give back any extra memory and return value and success.
+	 */
+	if (m_room != 0)
+		if ((mem = realloc(mem, (size_t)(mp - mem))) == NULL)
+			return (-2);
+	*str = mem;
+	return (len);
+}
+
+/*
+ * Cgetnum retrieves the value of the numeric capability cap from the
+ * capability record pointed to by buf.  The numeric value is returned in
+ * the long pointed to by num.  0 is returned on success, -1 if the requested
+ * numeric capability couldn't be found.
+ */
+int
+cgetnum(buf, cap, num)
+	char *buf, *cap;
+	long *num;
+{
+	register long n;
+	register int base, digit;
+	register char *bp;
+
+	/*
+	 * Find numeric capability cap
+	 */
+	bp = cgetcap(buf, cap, '#');
+	if (bp == NULL)
+		return (-1);
+
+	/*
+	 * Look at value and determine numeric base:
+	 *	0x... or 0X...	hexadecimal,
+	 * else	0...		octal,
+	 * else			decimal.
+	 */
+	if (*bp == '0') {
+		bp++;
+		if (*bp == 'x' || *bp == 'X') {
+			bp++;
+			base = 16;
+		} else
+			base = 8;
+	} else
+		base = 10;
+
+	/*
+	 * Conversion loop ...
+	 */
+	n = 0;
+	for (;;) {
+		if ('0' <= *bp && *bp <= '9')
+			digit = *bp - '0';
+		else if ('a' <= *bp && *bp <= 'f')
+			digit = 10 + *bp - 'a';
+		else if ('A' <= *bp && *bp <= 'F')
+			digit = 10 + *bp - 'A';
+		else
+			break;
+
+		if (digit >= base)
+			break;
+
+		n = n * base + digit;
+		bp++;
+	}
+
+	/*
+	 * Return value and success.
+	 */
+	*num = n;
+	return (0);
+}
+
+
+/*
+ * Compare name field of record.
+ */
+static int
+nfcmp(nf, rec)
+	char *nf, *rec;
+{
+	char *cp, tmp;
+	int ret;
+
+	for (cp = rec; *cp != ':'; cp++)
+		;
+
+	tmp = *(cp + 1);
+	*(cp + 1) = '\0';
+	ret = strcmp(nf, rec);
+	*(cp + 1) = tmp;
+
+	return (ret);
+}
diff --git a/lib/libc/gen/getcwd.3 b/lib/libc/gen/getcwd.3
new file mode 100644
index 0000000..8740a75
--- /dev/null
+++ b/lib/libc/gen/getcwd.3
@@ -0,0 +1,154 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getcwd.3	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt GETCWD 3
+.Os BSD 4.2
+.Sh NAME
+.Nm getcwd
+.Nd get working directory pathname
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft char *
+.Fn getcwd "char *buf" "size_t size"
+.Ft char *
+.Fn getwd "char *buf"
+.Sh DESCRIPTION
+The
+.Fn getcwd
+function copies the absolute pathname of the current working directory
+into the memory referenced by
+.Fa buf
+and returns a pointer to
+.Fa buf .
+The
+.Fa size
+argument is the size, in bytes, of the array referenced by
+.Fa buf .
+.Pp
+If
+.Fa buf
+is
+.Dv NULL ,
+space is allocated as necessary to store the pathname.
+This space may later be
+.Xr free 3 Ns 'd.
+.Pp
+The function
+.Fn getwd
+is a compatibility routine which calls
+.Fn getcwd
+with its
+.Fa buf
+argument and a size of
+.Dv MAXPATHLEN
+(as defined in the include
+file
+.Aq Pa sys/param.h ) .
+Obviously,
+.Fa buf
+should be at least
+.Dv MAXPATHLEN
+bytes in length.
+.Pp
+These routines have traditionally been used by programs to save the
+name of a working directory for the purpose of returning to it.
+A much faster and less error-prone method of accomplishing this is to
+open the current directory
+.Pq Ql \&.
+and use the
+.Xr fchdir 2
+function to return.
+.Sh RETURN VALUES
+Upon successful completion, a pointer to the pathname is returned.
+Otherwise a
+.Dv NULL
+pointer is returned and the global variable
+.Va errno
+is set to indicate the error.
+In addition,
+.Fn getwd
+copies the error message associated with
+.Va errno
+into the memory referenced by
+.Fa buf .
+.Sh ERRORS
+The
+.Fn getcwd
+function
+will fail if:
+.Bl -tag -width [EACCESS]
+.It Bq Er EACCESS
+Read or search permission was denied for a component of the pathname.
+.It Bq Er EINVAL
+The
+.Fa size
+argument is zero.
+.It Bq Er ENOENT
+A component of the pathname no longer exists.
+.It Bq Er ENOMEM
+Insufficient memory is available.
+.It Bq Er ERANGE
+The
+.Fa size
+argument is greater than zero but smaller than the length of the pathname
+plus 1.
+.El
+.Sh SEE ALSO
+.Xr chdir 2 ,
+.Xr fchdir 2 ,
+.Xr malloc 3 ,
+.Xr strerror 3
+.Sh STANDARDS
+The
+.Fn getcwd
+function
+conforms to
+.St -ansiC .
+The ability to specify a
+.Dv NULL
+pointer and have
+.Fn getcwd
+allocate memory as necessary is an extension.
+.Sh HISTORY
+The
+.Fn getwd
+function appeared in 
+.Bx 4.0 .
+.Sh BUGS
+The
+.Fn getwd
+function
+does not do sufficient error checking and is not able to return very
+long, but valid, paths.
+It is provided for compatibility.
diff --git a/lib/libc/gen/getcwd.c b/lib/libc/gen/getcwd.c
new file mode 100644
index 0000000..fbd445d
--- /dev/null
+++ b/lib/libc/gen/getcwd.c
@@ -0,0 +1,234 @@
+/*
+ * Copyright (c) 1989, 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getcwd.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <dirent.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define	ISDOT(dp) \
+	(dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || \
+	    dp->d_name[1] == '.' && dp->d_name[2] == '\0'))
+
+char *
+getcwd(pt, size)
+	char *pt;
+	size_t size;
+{
+	register struct dirent *dp;
+	register DIR *dir;
+	register dev_t dev;
+	register ino_t ino;
+	register int first;
+	register char *bpt, *bup;
+	struct stat s;
+	dev_t root_dev;
+	ino_t root_ino;
+	size_t ptsize, upsize;
+	int save_errno;
+	char *ept, *eup, *up;
+
+	/*
+	 * If no buffer specified by the user, allocate one as necessary.
+	 * If a buffer is specified, the size has to be non-zero.  The path
+	 * is built from the end of the buffer backwards.
+	 */
+	if (pt) {
+		ptsize = 0;
+		if (!size) {
+			errno = EINVAL;
+			return (NULL);
+		}
+		if (size == 1) {
+			errno = ERANGE;
+			return (NULL);
+		}
+		ept = pt + size;
+	} else {
+		if ((pt = malloc(ptsize = 1024 - 4)) == NULL)
+			return (NULL);
+		ept = pt + ptsize;
+	}
+	bpt = ept - 1;
+	*bpt = '\0';
+
+	/*
+	 * Allocate bytes (1024 - malloc space) for the string of "../"'s.
+	 * Should always be enough (it's 340 levels).  If it's not, allocate
+	 * as necessary.  Special * case the first stat, it's ".", not "..".
+	 */
+	if ((up = malloc(upsize = 1024 - 4)) == NULL)
+		goto err;
+	eup = up + MAXPATHLEN;
+	bup = up;
+	up[0] = '.';
+	up[1] = '\0';
+
+	/* Save root values, so know when to stop. */
+	if (stat("/", &s))
+		goto err;
+	root_dev = s.st_dev;
+	root_ino = s.st_ino;
+
+	errno = 0;			/* XXX readdir has no error return. */
+
+	for (first = 1;; first = 0) {
+		/* Stat the current level. */
+		if (lstat(up, &s))
+			goto err;
+
+		/* Save current node values. */
+		ino = s.st_ino;
+		dev = s.st_dev;
+
+		/* Check for reaching root. */
+		if (root_dev == dev && root_ino == ino) {
+			*--bpt = '/';
+			/*
+			 * It's unclear that it's a requirement to copy the
+			 * path to the beginning of the buffer, but it's always
+			 * been that way and stuff would probably break.
+			 */
+			bcopy(bpt, pt, ept - bpt);
+			free(up);
+			return (pt);
+		}
+
+		/*
+		 * Build pointer to the parent directory, allocating memory
+		 * as necessary.  Max length is 3 for "../", the largest
+		 * possible component name, plus a trailing NULL.
+		 */
+		if (bup + 3  + MAXNAMLEN + 1 >= eup) {
+			if ((up = realloc(up, upsize *= 2)) == NULL)
+				goto err;
+			bup = up;
+			eup = up + upsize;
+		}
+		*bup++ = '.';
+		*bup++ = '.';
+		*bup = '\0';
+
+		/* Open and stat parent directory. */
+		if (!(dir = opendir(up)) || fstat(dirfd(dir), &s))
+			goto err;
+
+		/* Add trailing slash for next directory. */
+		*bup++ = '/';
+
+		/*
+		 * If it's a mount point, have to stat each element because
+		 * the inode number in the directory is for the entry in the
+		 * parent directory, not the inode number of the mounted file.
+		 */
+		save_errno = 0;
+		if (s.st_dev == dev) {
+			for (;;) {
+				if (!(dp = readdir(dir)))
+					goto notfound;
+				if (dp->d_fileno == ino)
+					break;
+			}
+		} else
+			for (;;) {
+				if (!(dp = readdir(dir)))
+					goto notfound;
+				if (ISDOT(dp))
+					continue;
+				bcopy(dp->d_name, bup, dp->d_namlen + 1);
+
+				/* Save the first error for later. */
+				if (lstat(up, &s)) {
+					if (!save_errno)
+						save_errno = errno;
+					errno = 0;
+					continue;
+				}
+				if (s.st_dev == dev && s.st_ino == ino)
+					break;
+			}
+
+		/*
+		 * Check for length of the current name, preceding slash,
+		 * leading slash.
+		 */
+		if (bpt - pt < dp->d_namlen + (first ? 1 : 2)) {
+			size_t len, off;
+
+			if (!ptsize) {
+				errno = ERANGE;
+				goto err;
+			}
+			off = bpt - pt;
+			len = ept - bpt;
+			if ((pt = realloc(pt, ptsize *= 2)) == NULL)
+				goto err;
+			bpt = pt + off;
+			ept = pt + ptsize;
+			bcopy(bpt, ept - len, len);
+			bpt = ept - len;
+		}
+		if (!first)
+			*--bpt = '/';
+		bpt -= dp->d_namlen;
+		bcopy(dp->d_name, bpt, dp->d_namlen);
+		(void)closedir(dir);
+
+		/* Truncate any file name. */
+		*bup = '\0';
+	}
+
+notfound:
+	/*
+	 * If readdir set errno, use it, not any saved error; otherwise,
+	 * didn't find the current directory in its parent directory, set
+	 * errno to ENOENT.
+	 */
+	if (!errno)
+		errno = save_errno ? save_errno : ENOENT;
+	/* FALLTHROUGH */
+err:
+	if (ptsize)
+		free(pt);
+	free(up);
+	return (NULL);
+}
diff --git a/lib/libc/gen/getdiskbyname.3 b/lib/libc/gen/getdiskbyname.3
new file mode 100644
index 0000000..14841aa
--- /dev/null
+++ b/lib/libc/gen/getdiskbyname.3
@@ -0,0 +1,64 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getdiskbyname.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETDISKBYNAME 3
+.Os BSD 4.2
+.Sh NAME
+.Nm getdiskbyname
+.Nd get generic disk description by its name
+.Sh SYNOPSIS
+.Fd #include <sys/disklabel.h>
+.Ft struct disklabel *
+.Fn getdiskbyname "const char *name"
+.Sh DESCRIPTION
+The
+.Fn getdiskbyname
+function
+takes a disk name (e.g.
+.Ql rm03 )
+and returns a prototype disk label
+describing its geometry information and the standard
+disk partition tables.  All information is obtained from
+the 
+.Xr disktab 5
+file.
+.Sh SEE ALSO
+.Xr disklabel 5 ,
+.Xr disktab 5 ,
+.Xr disklabel 8
+.Sh HISTORY
+The
+.Fn getdiskbyname
+function appeared in 
+.Bx 4.3 .
diff --git a/lib/libc/gen/getdomainname.3 b/lib/libc/gen/getdomainname.3
new file mode 100644
index 0000000..8ba5995
--- /dev/null
+++ b/lib/libc/gen/getdomainname.3
@@ -0,0 +1,98 @@
+.\" Copyright (c) 1983, 1991 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     from: @(#)getdomainname.2	6.7 (Berkeley) 3/10/91
+.\"	$Id: getdomainname.2,v 1.1 1993/10/25 03:11:30 rgrimes Exp $
+.\"
+.Dd March 10, 1991
+.Dt GETDOMAINNAME 3
+.Os BSD 4.2
+.Sh NAME
+.Nm getdomainname ,
+.Nm setdomainname
+.Nd get/set name of current host
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn getdomainname "char *name" "int namelen"
+.Ft int
+.Fn setdomainname "const char *name" "int namelen"
+.Sh DESCRIPTION
+.Fn Getdomainname
+returns the standard host name for the current processor, as
+previously set by
+.Fn setdomainname .
+The parameter
+.Fa namelen
+specifies the size of the 
+.Fa name
+array.  The returned name is null-terminated unless insufficient
+space is provided.
+.Pp
+.Fn Setdomainname
+sets the name of the host machine to be
+.Fa name ,
+which has length
+.Fa namelen .
+This call is restricted to the super-user and
+is normally used only when the system is bootstrapped.
+.Sh RETURN VALUES
+If the call succeeds a value of 0 is returned.  If the call
+fails, a value of -1 is returned and an error code is
+placed in the global location
+.Va errno .
+.Sh ERRORS
+The following errors may be returned by these calls:
+.Bl -tag -width Er
+.It Bq Er EFAULT
+The
+.Fa name
+or
+.Fa namelen
+parameter gave an
+invalid address.
+.It Bq Er EPERM
+The caller tried to set the domainname and was not the super-user.
+.El
+.Sh SEE ALSO
+.Xr sysctl 2
+.Xr gethostid 3
+.Sh BUGS
+Host names are limited to
+.Dv MAXHOSTNAMELEN
+(from
+.Ao Pa sys/param.h Ac )
+characters, currently 256.
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/gen/getdomainname.c b/lib/libc/gen/getdomainname.c
new file mode 100644
index 0000000..990d9f3
--- /dev/null
+++ b/lib/libc/gen/getdomainname.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*
+static char sccsid[] = "From: @(#)gethostname.c	8.1 (Berkeley) 6/4/93";
+*/
+static const char rcsid[] =
+  "$Id$";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+long
+getdomainname(name, namelen)
+	char *name;
+	int namelen;
+{
+	int mib[2];
+	size_t size;
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_DOMAINNAME;
+	size = namelen;
+	if (sysctl(mib, 2, name, &size, NULL, 0) == -1)
+		return (-1);
+	return (0);
+}
diff --git a/lib/libc/gen/getfsent.3 b/lib/libc/gen/getfsent.3
new file mode 100644
index 0000000..1051837
--- /dev/null
+++ b/lib/libc/gen/getfsent.3
@@ -0,0 +1,148 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getfsent.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETFSENT 3
+.Os BSD 4
+.Sh NAME
+.Nm getfsent ,
+.Nm getfsspec ,
+.Nm getfsfile ,
+.Nm setfsent ,
+.Nm endfsent
+.Nd get file system descriptor file entry
+.Sh SYNOPSIS
+.Fd #include <fstab.h>
+.Ft fstab *
+.Fn getfsent void
+.Ft struct fstab *
+.Fn getfsspec "const char *spec"
+.Ft struct fstab *
+.Fn getfsfile "const char *file"
+.Ft int
+.Fn setfsent void
+.Ft void
+.Fn endfsent void
+.Sh DESCRIPTION
+The
+.Fn getfsent ,
+.Fn getfsspec ,
+and
+.Fn getfsfile
+functions
+each return a pointer to an object with the following structure
+containing the broken-out fields of a line in the file system
+description file,
+.Aq Pa fstab.h .
+.Bd -literal -offset indent
+struct fstab {
+	char	*fs_spec;	/* block special device name */
+	char	*fs_file;	/* file system path prefix */
+	char	*fs_vfstype;	/* type of file system */
+	char	*fs_mntops;	/* comma separated mount options */
+	char	*fs_type;	/* rw, ro, sw, or xx */
+	int	fs_freq;	/* dump frequency, in days */
+	int	fs_passno;	/* pass number on parallel dump */
+};
+.Ed
+.Pp
+The fields have meanings described in
+.Xr fstab 5 .
+.Pp
+The
+.Fn setfsent
+function
+opens the file (closing any previously opened file) or rewinds it
+if it is already open.
+.Pp
+The
+.Fn endfsent
+function
+closes the file.
+.Pp
+The
+.Fn getfsspec
+and
+.Fn getfsfile
+functions
+search the entire file (opening it if necessary) for a matching special
+file name or file system file name.
+.Pp
+For programs wishing to read the entire database,
+.Fn getfsent
+reads the next entry (opening the file if necessary).
+.Pp
+All entries in the file with a type field equivalent to
+.Dv FSTAB_XX
+are ignored.
+.Sh RETURN VALUES
+The
+.Fn getfsent ,
+.Fn getfsspec ,
+and
+.Fn getfsfile
+functions
+return a null pointer (0) on
+.Dv EOF
+or error.
+The
+.Fn setfsent
+function
+returns 0 on failure, 1 on success.
+The
+.Fn endfsent
+function
+returns nothing.
+.Sh FILES
+.Bl -tag -width /etc/fstab -compact
+.It Pa /etc/fstab
+.El
+.Sh SEE ALSO
+.Xr fstab 5
+.Sh HISTORY
+The
+.Fn getfsent
+function appeared in 
+.Bx 4.0 ;
+the
+.Fn endfsent ,
+.Fn getfsfile ,
+.Fn getfsspec ,
+and 
+.Fn setfsent
+functions appeared in
+.Bx 4.3 .
+.Sh BUGS
+These functions use static data storage;
+if the data is needed for future use, it should be
+copied before any subsequent calls overwrite it.
diff --git a/lib/libc/gen/getgrent.3 b/lib/libc/gen/getgrent.3
new file mode 100644
index 0000000..132ba6b
--- /dev/null
+++ b/lib/libc/gen/getgrent.3
@@ -0,0 +1,204 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     From: @(#)getgrent.3	8.2 (Berkeley) 4/19/94
+.\"	$Id$
+.\"
+.Dd September 29, 1994
+.Dt GETGRENT 3
+.Os
+.Sh NAME
+.Nm getgrent ,
+.Nm getgrnam ,
+.Nm getgrgid ,
+.Nm setgroupent ,
+.\" .Nm setgrfile ,
+.Nm setgrent ,
+.Nm endgrent
+.Nd group database operations
+.Sh SYNOPSIS
+.Fd #include <grp.h>
+.Ft struct group *
+.Fn getgrent void
+.Ft struct group *
+.Fn getgrnam "const char *name"
+.Ft struct group *
+.Fn getgrgid "gid_t gid"
+.Ft struct group *
+.Fn setgroupent "int stayopen"
+.\" .Ft void
+.\" .Fn setgrfile "const char *name"
+.Ft int
+.Fn setgrent void
+.Ft void
+.Fn endgrent void
+.Sh DESCRIPTION
+These functions operate on the group database file
+.Pa /etc/group
+which is described
+in
+.Xr group 5 .
+Each line of the database is defined by the structure
+.Ar group
+found in the include
+file
+.Aq Pa grp.h :
+.Bd -literal -offset indent
+struct group {
+	char	*gr_name;	/* group name */
+	char	*gr_passwd;	/* group password */
+	gid_t	gr_gid;		/* group id */
+	char	**gr_mem;	/* group members */
+};
+.Ed
+.Pp
+The functions
+.Fn getgrnam
+and
+.Fn getgrgid
+search the group database for the given group name pointed to by
+.Ar name
+or the group id pointed to by
+.Ar gid ,
+respectively, returning the first one encountered.  Identical group
+names or group gids may result in undefined behavior.
+.Pp
+The
+.Fn getgrent
+function
+sequentially reads the group database and is intended for programs
+that wish to step through the complete list of groups.
+.Pp
+All three routines will open the group file for reading, if necessary.
+.Pp
+The
+.Fn setgroupent
+function
+opens the file, or rewinds it if it is already open.  If
+.Fa stayopen
+is non-zero, file descriptors are left open, significantly speeding
+functions subsequent calls.  This functionality is unnecessary for
+.Fn getgrent
+as it doesn't close its file descriptors by default.  It should also
+be noted that it is dangerous for long-running programs to use this
+functionality as the group file may be updated.
+.Pp
+The
+.Fn setgrent
+function
+is identical to
+.Fn setgroupent
+with an argument of zero.
+.Pp
+The
+.Fn endgrent
+function
+closes any open files.
+.Sh YP/NIS INTERACTION
+When the
+.Xr yp 4
+group database is enabled, the
+.Fn getgrnam
+and
+.Fn getgrgid
+functions use the YP maps
+.Dq Li group.byname
+and
+.Dq Li group.bygid ,
+respectively, if the requested group is not found in the local
+.Pa /etc/group
+file.  The
+.Fn getgrent
+function will step through the YP map
+.Dq Li group.byname
+if the entire map is enabled as described in
+.Xr group 5 .
+.Sh RETURN VALUES
+The functions
+.Fn getgrent ,
+.Fn getgrnam ,
+and
+.Fn getgrgid ,
+return a pointer to the group entry if successful; if end-of-file
+is reached or an error occurs a null pointer is returned.
+The functions
+.Fn setgroupent
+and
+.Fn setgrent
+return the value 1 if successful, otherwise the value
+0 is returned.
+The functions
+.Fn endgrent
+and
+.Fn setgrfile
+have no return value.
+.Sh FILES
+.Bl -tag -width /etc/group -compact
+.It Pa /etc/group
+group database file
+.El
+.Sh SEE ALSO
+.Fn getpwent 3 ,
+.Fn group 5 ,
+.Fn yp 4
+.Sh HISTORY
+The functions
+.Fn endgrent ,
+.Fn getgrent ,
+.Fn getgrnam ,
+.Fn getgrgid ,
+and
+.Fn setgrent
+appeared in
+.At v7 .
+The functions
+.Fn setgrfile
+and
+.Fn setgroupent
+appeared in
+.Bx 4.3 Reno .
+.Sh COMPATIBILITY
+The historic function
+.Fn setgrfile ,
+which allowed the specification of alternate password databases, has
+been deprecated and is no longer available.
+.Sh BUGS
+The functions
+.Fn getgrent ,
+.Fn getgrnam ,
+.Fn getgrgid ,
+.Fn setgroupent
+and
+.Fn setgrent
+leave their results in an internal static object and return
+a pointer to that object. Subsequent calls to
+the same function
+will modify the same object.
diff --git a/lib/libc/gen/getgrent.c b/lib/libc/gen/getgrent.c
new file mode 100644
index 0000000..6451dc9
--- /dev/null
+++ b/lib/libc/gen/getgrent.c
@@ -0,0 +1,438 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getgrent.c	8.2 (Berkeley) 3/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <grp.h>
+
+static FILE *_gr_fp;
+static struct group _gr_group;
+static int _gr_stayopen;
+static int grscan(), start_gr();
+#ifdef YP
+#include <rpc/rpc.h>
+#include <rpcsvc/yp_prot.h>
+#include <rpcsvc/ypclnt.h>
+static int _gr_stepping_yp;
+static int _gr_yp_enabled;
+static int _getypgroup(struct group *, const char *, char *);
+static int _nextypgroup(struct group *);
+#endif
+
+#define	MAXGRP		200
+static char *members[MAXGRP];
+#define	MAXLINELENGTH	1024
+static char line[MAXLINELENGTH];
+
+struct group *
+getgrent()
+{
+	if (!_gr_fp && !start_gr()) {
+		return NULL;
+	}
+
+#ifdef YP
+	if (_gr_stepping_yp) {
+		if (_nextypgroup(&_gr_group))
+			return(&_gr_group);
+	}
+tryagain:
+#endif
+
+	if (!grscan(0, 0, NULL))
+		return(NULL);
+#ifdef YP
+	if(_gr_group.gr_name[0] == '+' && _gr_group.gr_name[1]) {
+		_getypgroup(&_gr_group, &_gr_group.gr_name[1],
+			    "group.byname");
+	} else if(_gr_group.gr_name[0] == '+') {
+		if (!_nextypgroup(&_gr_group))
+			goto tryagain;
+		else
+			return(&_gr_group);
+	}
+#endif
+	return(&_gr_group);
+}
+
+struct group *
+getgrnam(name)
+	const char *name;
+{
+	int rval;
+
+	if (!start_gr())
+		return(NULL);
+#ifdef YP
+	tryagain:
+#endif
+	rval = grscan(1, 0, name);
+#ifdef YP
+	if(rval == -1 && (_gr_yp_enabled < 0 || (_gr_yp_enabled &&
+					_gr_group.gr_name[0] == '+'))) {
+		if (!(rval = _getypgroup(&_gr_group, name, "group.byname")))
+			goto tryagain;
+	}
+#endif
+	if (!_gr_stayopen)
+		endgrent();
+	return(rval ? &_gr_group : NULL);
+}
+
+struct group *
+#ifdef __STDC__
+getgrgid(gid_t gid)
+#else
+getgrgid(gid)
+	gid_t gid;
+#endif
+{
+	int rval;
+
+	if (!start_gr())
+		return(NULL);
+#ifdef YP
+	tryagain:
+#endif
+	rval = grscan(1, gid, NULL);
+#ifdef YP
+	if(rval == -1 && _gr_yp_enabled) {
+		char buf[16];
+		snprintf(buf, sizeof buf, "%d", (unsigned)gid);
+		if (!(rval = _getypgroup(&_gr_group, buf, "group.bygid")))
+			goto tryagain;
+	}
+#endif
+	if (!_gr_stayopen)
+		endgrent();
+	return(rval ? &_gr_group : NULL);
+}
+
+static int
+start_gr()
+{
+	if (_gr_fp) {
+		rewind(_gr_fp);
+		return(1);
+	}
+	_gr_fp = fopen(_PATH_GROUP, "r");
+	if(!_gr_fp) return 0;
+#ifdef YP
+	/*
+	 * This is a disgusting hack, used to determine when YP is enabled.
+	 * This would be easier if we had a group database to go along with
+	 * the password database.
+	 */
+	{
+		char *line;
+		size_t linelen;
+		_gr_yp_enabled = 0;
+		while((line = fgetln(_gr_fp, &linelen)) != NULL) {
+			if(line[0] == '+') {
+				if(line[1] && !_gr_yp_enabled) {
+					_gr_yp_enabled = 1;
+				} else {
+					_gr_yp_enabled = -1;
+					break;
+				}
+			}
+		}
+		rewind(_gr_fp);
+	}
+#endif
+	return 1;
+}
+
+int
+setgrent()
+{
+	return(setgroupent(0));
+}
+
+int
+setgroupent(stayopen)
+	int stayopen;
+{
+	if (!start_gr())
+		return(0);
+	_gr_stayopen = stayopen;
+#ifdef YP
+	_gr_stepping_yp = 0;
+#endif
+	return(1);
+}
+
+void
+endgrent()
+{
+#ifdef YP
+	_gr_stepping_yp = 0;
+#endif
+	if (_gr_fp) {
+		(void)fclose(_gr_fp);
+		_gr_fp = NULL;
+	}
+}
+
+static int
+grscan(search, gid, name)
+	register int search, gid;
+	register char *name;
+{
+	register char *cp, **m;
+	char *bp;
+#ifdef YP
+	int _ypfound = 0;
+#endif;
+	for (;;) {
+		if (!fgets(line, sizeof(line), _gr_fp))
+			return(0);
+		bp = line;
+		/* skip lines that are too big */
+		if (!index(line, '\n')) {
+			int ch;
+
+			while ((ch = getc(_gr_fp)) != '\n' && ch != EOF)
+				;
+			continue;
+		}
+		if ((_gr_group.gr_name = strsep(&bp, ":\n")) == NULL)
+			break;
+#ifdef YP
+		/*
+		 * XXX   We need to be careful to avoid proceeding
+		 * past this point under certain circumstances or
+		 * we risk dereferencing null pointers down below.
+		 */
+		if (_gr_group.gr_name[0] == '+') {
+			if (strlen(_gr_group.gr_name) == 1) {
+				switch(search) {
+				case 0:
+					return(1);
+				case 1:
+					return(-1);
+				default:
+					return(0);
+				}
+			} else {
+				if (!_getypgroup(&_gr_group, &_gr_group.gr_name[1],
+						"group.byname"))
+					continue;
+			/* We're going to override -- tell the world. */
+				members[0] = NULL;
+				_ypfound++;
+			}
+		}
+#else
+		if (_gr_group.gr_name[0] == '+')
+			continue;
+#endif /* YP */
+		if (search && name) {
+			if(strcmp(_gr_group.gr_name, name)) {
+				continue;
+			}
+		}
+		if ((_gr_group.gr_passwd = strsep(&bp, ":\n")) == NULL)
+			break;;
+		if (!(cp = strsep(&bp, ":\n")))
+			continue;
+#ifdef YP
+		if (!_ypfound)
+#endif
+		_gr_group.gr_gid = atoi(cp);
+		if (search && name == NULL && _gr_group.gr_gid != gid)
+			continue;
+		cp = NULL;
+		for (m = _gr_group.gr_mem = members;; bp++) {
+			if (m == &members[MAXGRP - 1])
+				break;
+			if (*bp == ',') {
+				if (cp) {
+					*bp = '\0';
+					*m++ = cp;
+					cp = NULL;
+				}
+			} else if (*bp == '\0' || *bp == '\n' || *bp == ' ') {
+				if (cp) {
+					*bp = '\0';
+					*m++ = cp;
+			}
+				break;
+			} else if (cp == NULL)
+				cp = bp;
+		}
+		*m = NULL;
+		return(1);
+	}
+	/* NOTREACHED */
+	return (0);
+}
+
+#ifdef YP
+
+static int
+_gr_breakout_yp(struct group *gr, char *result)
+{
+	char *s, *cp;
+	char **m;
+
+	/*
+	 * XXX If 's' ends up being a NULL pointer, punt on this group.
+	 * It means the NIS group entry is badly formatted and should
+	 * be skipped.
+	 */
+	if ((s = strsep(&result, ":")) == NULL) return 0; /* name */
+	gr->gr_name = s;
+
+	if ((s = strsep(&result, ":")) == NULL) return 0; /* password */
+	gr->gr_passwd = s;
+
+	if ((s = strsep(&result, ":")) == NULL) return 0; /* gid */
+	gr->gr_gid = atoi(s);
+
+	if ((s = result) == NULL) return 0;
+	cp = 0;
+
+	for (m = _gr_group.gr_mem = members; /**/; s++) {
+		if (m == &members[MAXGRP - 1]) {
+			break;
+		}
+		if (*s == ',') {
+			if (cp) {
+				*s = '\0';
+				*m++ = cp;
+				cp = NULL;
+			}
+		} else if (*s == '\0' || *s == '\n' || *s == ' ') {
+			if (cp) {
+				*s = '\0';
+				*m++ = cp;
+			}
+			break;
+		} else if (cp == NULL) {
+			cp = s;
+		}
+	}
+	*m = NULL;
+
+	return 1;
+}
+
+static char *_gr_yp_domain;
+
+static int
+_getypgroup(struct group *gr, const char *name, char *map)
+{
+	char *result, *s;
+	static char resultbuf[1024];
+	int resultlen;
+
+	if(!_gr_yp_domain) {
+		if(yp_get_default_domain(&_gr_yp_domain))
+		  return 0;
+	}
+
+	if(yp_match(_gr_yp_domain, map, name, strlen(name),
+		    &result, &resultlen))
+		return 0;
+
+	s = strchr(result, '\n');
+	if(s) *s = '\0';
+
+	if(resultlen >= sizeof resultbuf) return 0;
+	strcpy(resultbuf, result);
+	result = resultbuf;
+	return(_gr_breakout_yp(gr, resultbuf));
+
+}
+
+
+static int
+_nextypgroup(struct group *gr)
+{
+	static char *key;
+	static int keylen;
+	char *lastkey, *result;
+	static char resultbuf[1024];
+	int resultlen;
+	int rv;
+
+	if(!_gr_yp_domain) {
+		if(yp_get_default_domain(&_gr_yp_domain))
+		  return 0;
+	}
+
+	if(!_gr_stepping_yp) {
+		if(key) free(key);
+		rv = yp_first(_gr_yp_domain, "group.byname",
+			      &key, &keylen, &result, &resultlen);
+		if(rv) {
+			return 0;
+		}
+		_gr_stepping_yp = 1;
+		goto unpack;
+	} else {
+tryagain:
+		lastkey = key;
+		rv = yp_next(_gr_yp_domain, "group.byname", key, keylen,
+			     &key, &keylen, &result, &resultlen);
+		free(lastkey);
+unpack:
+		if(rv) {
+			_gr_stepping_yp = 0;
+			return 0;
+		}
+
+		if(resultlen > sizeof(resultbuf)) {
+			free(result);
+			goto tryagain;
+		}
+
+		strcpy(resultbuf, result);
+		free(result);
+		if((result = strchr(resultbuf, '\n')) != NULL)
+			*result = '\0';
+		if (_gr_breakout_yp(gr, resultbuf))
+			return(1);
+		else
+			goto tryagain;
+	}
+}
+
+#endif /* YP */
diff --git a/lib/libc/gen/getgrouplist.3 b/lib/libc/gen/getgrouplist.3
new file mode 100644
index 0000000..7878574
--- /dev/null
+++ b/lib/libc/gen/getgrouplist.3
@@ -0,0 +1,92 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getgrouplist.3	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt GETGROUPLIST 3
+.Os
+.Sh NAME
+.Nm getgrouplist
+.Nd calculate group access list
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn getgrouplist "const char *name" "int basegid" "int *groups" "int *ngroups"
+.Sh DESCRIPTION
+The
+.Fn getgrouplist
+function reads through the group file and calculates
+the group access list for the user specified in
+.Fa name .
+The
+.Fa basegid
+is automatically included in the groups list.
+Typically this value is given as
+the group number from the password file.
+.Pp
+The resulting group list is returned in the integer array pointed to by
+.Fa groups .
+The caller specifies the size of the 
+.Fa groups
+array in the integer pointed to by
+.Fa ngroups ;
+the actual number of groups found is returned in
+.Fa ngroups .
+.Sh RETURN VALUES
+The
+.Fn getgrouplist
+function
+returns \-1 if the size of the group list is too small to
+hold all the user's groups.
+Here, the group array will be filled with as many groups as will fit.
+.Sh FILES
+.Bl -tag -width /etc/group -compact
+.It Pa /etc/group
+group membership list
+.El
+.Sh SEE ALSO
+.Xr setgroups 2 ,
+.Xr initgroups 3
+.Sh HISTORY
+The
+.Fn getgrouplist
+function first appeared in 4.4BSD.
+.Sh BUGS
+The
+.Fn getgrouplist
+function
+uses the routines based on
+.Xr getgrent 3 .
+If the invoking program uses any of these routines,
+the group structure will
+be overwritten in the call to
+.Fn getgrouplist .
diff --git a/lib/libc/gen/getgrouplist.c b/lib/libc/gen/getgrouplist.c
new file mode 100644
index 0000000..c65e1fa
--- /dev/null
+++ b/lib/libc/gen/getgrouplist.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getgrouplist.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * get credential
+ */
+#include <sys/types.h>
+#include <string.h>
+#include <grp.h>
+
+int
+getgrouplist(uname, agroup, groups, grpcnt)
+	const char *uname;
+	int agroup;
+	register int *groups;
+	int *grpcnt;
+{
+	register struct group *grp;
+	register int i, ngroups;
+	int ret, maxgroups;
+
+	ret = 0;
+	ngroups = 0;
+	maxgroups = *grpcnt;
+	/*
+	 * When installing primary group, duplicate it;
+	 * the first element of groups is the effective gid
+	 * and will be overwritten when a setgid file is executed.
+	 */
+	groups[ngroups++] = agroup;
+	if (maxgroups > 1)
+		groups[ngroups++] = agroup;
+	/*
+	 * Scan the group file to find additional groups.
+	 */
+	setgrent();
+	while (grp = getgrent()) {
+		for (i = 0; i < ngroups; i++) {
+			if (grp->gr_gid == groups[i])
+				goto skip;
+		}
+		if (ngroups >= maxgroups) {
+			ret = -1;
+			break;
+		}
+		for (i = 0; grp->gr_mem[i]; i++) {
+			if (!strcmp(grp->gr_mem[i], uname)) {
+				groups[ngroups++] = grp->gr_gid;
+				break;
+			}
+		}
+skip:
+	}
+	endgrent();
+	*grpcnt = ngroups;
+	return (ret);
+}
diff --git a/lib/libc/gen/gethostname.3 b/lib/libc/gen/gethostname.3
new file mode 100644
index 0000000..fcb0303
--- /dev/null
+++ b/lib/libc/gen/gethostname.3
@@ -0,0 +1,97 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)gethostname.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETHOSTNAME 3
+.Os BSD 4.2
+.Sh NAME
+.Nm gethostname ,
+.Nm sethostname
+.Nd get/set name of current host
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn gethostname "char *name" "int namelen"
+.Ft int
+.Fn sethostname "const char *name" "int namelen"
+.Sh DESCRIPTION
+.Fn Gethostname
+returns the standard host name for the current processor, as
+previously set by
+.Fn sethostname .
+The parameter
+.Fa namelen
+specifies the size of the 
+.Fa name
+array.  The returned name is null-terminated unless insufficient
+space is provided.
+.Pp
+.Fn Sethostname
+sets the name of the host machine to be
+.Fa name ,
+which has length
+.Fa namelen .
+This call is restricted to the super-user and
+is normally used only when the system is bootstrapped.
+.Sh RETURN VALUES
+If the call succeeds a value of 0 is returned.  If the call
+fails, a value of -1 is returned and an error code is
+placed in the global location
+.Va errno .
+.Sh ERRORS
+The following errors may be returned by these calls:
+.Bl -tag -width Er
+.It Bq Er EFAULT
+The
+.Fa name
+or
+.Fa namelen
+parameter gave an
+invalid address.
+.It Bq Er EPERM
+The caller tried to set the hostname and was not the super-user.
+.El
+.Sh SEE ALSO
+.Xr sysctl 2
+.Xr gethostid 3
+.Sh BUGS
+Host names are limited to
+.Dv MAXHOSTNAMELEN
+(from
+.Ao Pa sys/param.h Ac )
+characters, currently 256.
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/gen/gethostname.c b/lib/libc/gen/gethostname.c
new file mode 100644
index 0000000..058e4b6
--- /dev/null
+++ b/lib/libc/gen/gethostname.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)gethostname.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+long
+gethostname(name, namelen)
+	char *name;
+	int namelen;
+{
+	int mib[2];
+	size_t size;
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_HOSTNAME;
+	size = namelen;
+	if (sysctl(mib, 2, name, &size, NULL, 0) == -1)
+		return (-1);
+	return (0);
+}
diff --git a/lib/libc/gen/getloadavg.3 b/lib/libc/gen/getloadavg.3
new file mode 100644
index 0000000..2eafd5b
--- /dev/null
+++ b/lib/libc/gen/getloadavg.3
@@ -0,0 +1,64 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getloadavg.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETLOADAVG 3
+.Os
+.Sh NAME
+.Nm getloadavg
+.Nd get system load averages
+.Sh SYNOPSIS
+.Fn getloadavg "double loadavg[]" "int nelem"
+.Sh DESCRIPTION
+The
+.Fn getloadavg
+function returns the number of processes in the system run queue
+averaged over various periods of time.
+Up to
+.Fa nelem
+samples are retrieved and assigned to successive elements of
+.Fa loadavg Ns Bq .
+The system imposes a maximum of 3 samples, representing averages
+over the last 1, 5, and 15 minutes, respectively.
+.Sh DIAGNOSTICS
+If the load average was unobtainable, \-1 is returned; otherwise,
+the number of samples actually retrieved is returned.
+.Sh SEE ALSO
+.Xr uptime 1 ,
+.Xr sysctl 2 ,
+.Xr kvm_getloadavg 3
+.Sh HISTORY
+The
+.Fn getloadavg
+function appeared in
+.Bx 4.3 Reno .
diff --git a/lib/libc/gen/getloadavg.c b/lib/libc/gen/getloadavg.c
new file mode 100644
index 0000000..811dbda
--- /dev/null
+++ b/lib/libc/gen/getloadavg.c
@@ -0,0 +1,71 @@
+/*-
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getloadavg.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/sysctl.h>
+#include <vm/vm_param.h>
+
+#include <stdlib.h>
+
+/*
+ * getloadavg() -- Get system load averages.
+ *
+ * Put `nelem' samples into `loadavg' array.
+ * Return number of samples retrieved, or -1 on error.
+ */
+int
+getloadavg(loadavg, nelem)
+	double loadavg[];
+	int nelem;
+{
+	struct loadavg loadinfo;
+	int i, mib[2];
+	size_t size;
+
+	mib[0] = CTL_VM;
+	mib[1] = VM_LOADAVG;
+	size = sizeof(loadinfo);
+	if (sysctl(mib, 2, &loadinfo, &size, NULL, 0) < 0)
+		return (-1);
+
+	nelem = MIN(nelem, sizeof(loadinfo.ldavg) / sizeof(fixpt_t));
+	for (i = 0; i < nelem; i++)
+		loadavg[i] = (double) loadinfo.ldavg[i] / loadinfo.fscale;
+	return (nelem);
+}
diff --git a/lib/libc/gen/getlogin.c b/lib/libc/gen/getlogin.c
new file mode 100644
index 0000000..b6f55a4
--- /dev/null
+++ b/lib/libc/gen/getlogin.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getlogin.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <pwd.h>
+#include <utmp.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+int	_logname_valid;		/* known to setlogin() */
+
+char *
+getlogin()
+{
+	static char logname[MAXLOGNAME + 1];
+
+	if (_logname_valid == 0) {
+		if (_getlogin(logname, sizeof(logname) - 1) < 0)
+			return ((char *)NULL);
+		_logname_valid = 1;
+	}
+	return (*logname ? logname : (char *)NULL);
+}
diff --git a/lib/libc/gen/getmntinfo.3 b/lib/libc/gen/getmntinfo.3
new file mode 100644
index 0000000..f0e83ea3
--- /dev/null
+++ b/lib/libc/gen/getmntinfo.3
@@ -0,0 +1,108 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getmntinfo.3	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt GETMNTINFO 3
+.Os
+.Sh NAME
+.Nm getmntinfo
+.Nd get information about mounted file systems
+.Sh SYNOPSIS
+.Fd #include <sys/param.h>
+.Fd #include <sys/ucred.h>
+.Fd #include <sys/mount.h>
+.Ft int
+.Fn getmntinfo "struct statfs **mntbufp" "int flags"
+.Sh DESCRIPTION
+The
+.Fn getmntinfo
+function
+returns an array of
+.Xr statfs
+structures describing each currently mounted file system (see
+.Xr statfs 2 ) .
+.Pp
+The
+.Fn getmntinfo
+function
+passes its
+.Fa flags
+parameter transparently to
+.Xr getfsstat 2 .
+.Sh RETURN VALUES
+On successful completion,
+.Fn getmntinfo
+returns a count of the number of elements in the array.
+The pointer to the array is stored into
+.Fa mntbufp .
+.Pp
+If an error occurs, zero is returned and the external variable
+.Va errno
+is set to indicate the error.
+Although the pointer 
+.Fa mntbufp
+will be unmodified, any information previously returned by 
+.Fn getmntinfo
+will be lost.
+.Sh ERRORS
+The
+.Fn getmntinfo
+function
+may fail and set errno for any of the errors specified for the library 
+routines
+.Xr getfsstat 2
+or 
+.Xr malloc 3 .
+.Sh SEE ALSO
+.Xr getfsstat 2 ,
+.Xr statfs 2 ,
+.Xr mount 2 ,
+.Xr mount 8
+.Sh HISTORY
+The
+.Fn getmntinfo
+function first appeared in 4.4BSD.
+.Sh BUGS
+The
+.Fn getmntinfo
+function writes the array of structures to an internal static object
+and returns
+a pointer to that object. Subsequent calls to
+.Fn getmntinfo
+will modify the same object.
+.Pp
+The memory allocated by
+.Fn getmntinfo
+cannot be
+.Xr free 2 Ns 'd
+by the application.
diff --git a/lib/libc/gen/getmntinfo.c b/lib/libc/gen/getmntinfo.c
new file mode 100644
index 0000000..6e167a3
--- /dev/null
+++ b/lib/libc/gen/getmntinfo.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getmntinfo.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/ucred.h>
+#include <sys/mount.h>
+#include <stdlib.h>
+
+/*
+ * Return information about mounted filesystems.
+ */
+int
+getmntinfo(mntbufp, flags)
+	struct statfs **mntbufp;
+	int flags;
+{
+	static struct statfs *mntbuf;
+	static int mntsize;
+	static long bufsize;
+
+	if (mntsize <= 0 && (mntsize = getfsstat(0, 0, MNT_NOWAIT)) < 0)
+		return (0);
+	if (bufsize > 0 && (mntsize = getfsstat(mntbuf, bufsize, flags)) < 0)
+		return (0);
+	while (bufsize <= mntsize * sizeof(struct statfs)) {
+		if (mntbuf)
+			free(mntbuf);
+		bufsize = (mntsize + 1) * sizeof(struct statfs);
+		if ((mntbuf = (struct statfs *)malloc(bufsize)) == 0)
+			return (0);
+		if ((mntsize = getfsstat(mntbuf, bufsize, flags)) < 0)
+			return (0);
+	}
+	*mntbufp = mntbuf;
+	return (mntsize);
+}
diff --git a/lib/libc/gen/getnetgrent.3 b/lib/libc/gen/getnetgrent.3
new file mode 100644
index 0000000..1e38538
--- /dev/null
+++ b/lib/libc/gen/getnetgrent.3
@@ -0,0 +1,128 @@
+.\" Copyright (c) 1992, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getnetgrent.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETNETGRENT 3
+.Os
+.Sh NAME
+.Nm getnetgrent ,
+.Nm innetgr ,
+.Nm setnetgrent ,
+.Nm endnetgrent
+.Nd netgroup database operations
+.Sh SYNOPSIS
+.Ft int
+.Fn getnetgrent "char **host, char **user, char **domain"
+.Ft int
+.Fn innetgr "const char *netgroup, const char *host, const char *user, const char *domain"
+.Ft void
+.Fn setnetgrent "const char *netgroup"
+.Ft void
+.Fn endnetgrent void
+.Sh DESCRIPTION
+These functions operate on the netgroup database file
+.Pa /etc/netgroup
+which is described
+in
+.Xr netgroup 5 .
+The database defines a set of netgroups, each made up of one or more triples:
+.Bd -literal -offset indent
+(host, user, domain)
+.Ed
+that defines a combination of host, user and domain.
+Any of the three fields may be specified as ``wildcards'' that match any
+string.
+.Pp
+The function
+.Fn getnetgrent
+sets the three pointer arguments to the strings of the next member of the
+current netgroup.
+If any of the string pointers are
+.Sy (char *)0
+that field is considered a wildcard.
+.Pp
+The functions
+.Fn setnetgrent
+and
+.Fn endnetgrent
+set the current netgroup and terminate the current netgroup respectively.
+If
+.Fn setnetgrent
+is called with a different netgroup than the previous call, an implicit
+.Fn endnetgrent
+is implied.
+.Fn Setnetgrent
+also sets the offset to the first member of the netgroup.
+.Pp
+The function
+.Fn innetgr
+searches for a match of all fields within the specified group.
+If any of the
+.Sy host ,
+.Sy user ,
+or
+.Sy domain
+arguments are
+.Sy (char *)0
+those fields will match any string value in the netgroup member.
+.Sh RETURN VALUES
+The function
+.Fn getnetgrent
+returns 0 for ``no more netgroup members'' and 1 otherwise.
+The function
+.Fn innetgr
+returns 1 for a successful match and 0 otherwise.
+The functions
+.Fn setnetgrent
+and
+.Fn endnetgrent
+have no return value.
+.Sh FILES
+.Bl -tag -width /etc/netgroup -compact
+.It Pa /etc/netgroup
+netgroup database file
+.El
+.Sh SEE ALSO
+.Fn netgroup 5
+.Sh COMPATIBILITY
+The netgroup members have three string fields to maintain compatibility
+with other vendor implementations, however it is not obvious what use the
+.Sy domain
+string has within BSD.
+.Sh BUGS
+The function
+.Fn getnetgrent
+returns pointers to dynamically allocated data areas that are free'd when
+the function
+.Fn endnetgrent
+is called.
diff --git a/lib/libc/gen/getnetgrent.c b/lib/libc/gen/getnetgrent.c
new file mode 100644
index 0000000..2997f63
--- /dev/null
+++ b/lib/libc/gen/getnetgrent.c
@@ -0,0 +1,608 @@
+/*
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Rick Macklem at The University of Guelph.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getnetgrent.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <strings.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#ifdef YP
+/*
+ * Notes:
+ * We want to be able to use NIS netgroups properly while retaining
+ * the ability to use a local /etc/netgroup file. Unfortunately, you
+ * can't really do both at the same time - at least, not efficiently.
+ * NetBSD deals with this problem by creating a netgroup database
+ * using Berkeley DB (just like the password database) that allows
+ * for lookups using netgroup, netgroup.byuser or netgroup.byhost
+ * searches. This is a neat idea, but I don't have time to implement
+ * something like that now. (I think ultimately it would be nice
+ * if we DB-fied the group and netgroup stuff all in one shot, but
+ * for now I'm satisfied just to have something that works well
+ * without requiring massive code changes.)
+ * 
+ * Therefore, to still permit the use of the local file and maintain
+ * optimum NIS performance, we allow for the following conditions:
+ *
+ * - If /etc/netgroup does not exist and NIS is turned on, we use
+ *   NIS netgroups only.
+ *
+ * - If /etc/netgroup exists but is empty, we use NIS netgroups
+ *   only.
+ *
+ * - If /etc/netgroup exists and contains _only_ a '+', we use
+ *   NIS netgroups only.
+ *
+ * - If /etc/netgroup exists, contains locally defined netgroups
+ *   and a '+', we use a mixture of NIS and the local entries.
+ *   This method should return the same NIS data as just using
+ *   NIS alone, but it will be slower if the NIS netgroup database
+ *   is large (innetgr() in particular will suffer since extra
+ *   processing has to be done in order to determine memberships
+ *   using just the raw netgroup data).
+ *
+ * - If /etc/netgroup exists and contains only locally defined
+ *   netgroup entries, we use just those local entries and ignore
+ *   NIS (this is the original, pre-NIS behavior).
+ */
+#include <rpc/rpc.h>
+#include <rpcsvc/yp_prot.h>
+#include <rpcsvc/ypclnt.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <sys/errno.h>
+static char *_netgr_yp_domain;
+int _use_only_yp;
+static int _netgr_yp_enabled;
+static int _yp_innetgr;
+#endif
+
+#ifndef _PATH_NETGROUP
+#define _PATH_NETGROUP "/etc/netgroup"
+#endif
+
+/*
+ * Static Variables and functions used by setnetgrent(), getnetgrent() and
+ * endnetgrent().
+ * There are two linked lists:
+ * - linelist is just used by setnetgrent() to parse the net group file via.
+ *   parse_netgrp()
+ * - netgrp is the list of entries for the current netgroup
+ */
+struct linelist {
+	struct linelist	*l_next;	/* Chain ptr. */
+	int		l_parsed;	/* Flag for cycles */
+	char		*l_groupname;	/* Name of netgroup */
+	char		*l_line;	/* Netgroup entrie(s) to be parsed */
+};
+
+struct netgrp {
+	struct netgrp	*ng_next;	/* Chain ptr */
+	char		*ng_str[3];	/* Field pointers, see below */
+};
+#define NG_HOST		0	/* Host name */
+#define NG_USER		1	/* User name */
+#define NG_DOM		2	/* and Domain name */
+
+static struct linelist	*linehead = (struct linelist *)0;
+static struct netgrp	*nextgrp = (struct netgrp *)0;
+static struct {
+	struct netgrp	*gr;
+	char		*grname;
+} grouphead = {
+	(struct netgrp *)0,
+	(char *)0,
+};
+static FILE *netf = (FILE *)0;
+static int parse_netgrp();
+static struct linelist *read_for_group();
+void setnetgrent(), endnetgrent();
+int getnetgrent(), innetgr();
+
+#define	LINSIZ	1024	/* Length of netgroup file line */
+
+/*
+ * setnetgrent()
+ * Parse the netgroup file looking for the netgroup and build the list
+ * of netgrp structures. Let parse_netgrp() and read_for_group() do
+ * most of the work.
+ */
+void
+setnetgrent(group)
+	char *group;
+{
+#ifdef YP
+	struct stat _yp_statp;
+	char _yp_plus;
+#endif
+
+	/* Sanity check */
+
+	if (group == NULL || !strlen(group))
+		return;
+
+	if (grouphead.gr == (struct netgrp *)0 ||
+		strcmp(group, grouphead.grname)) {
+		endnetgrent();
+#ifdef YP
+		/* Presumed guilty until proven innocent. */
+		_use_only_yp = 0;
+		/*
+		 * IF /etc/netgroup doesn't exist or is empty,
+		 * use NIS exclusively.
+		 */
+		if (((stat(_PATH_NETGROUP, &_yp_statp) < 0) &&
+			errno == ENOENT) || _yp_statp.st_size == 0)
+			_use_only_yp = _netgr_yp_enabled = 1;
+		if ((netf = fopen(_PATH_NETGROUP,"r")) != NULL ||_use_only_yp){
+		/*
+		 * Icky: grab the first character of the netgroup file
+		 * and turn on NIS if it's a '+'. rewind the stream
+		 * afterwards so we don't goof up read_for_group() later.
+		 */
+			if (netf) {
+				fscanf(netf, "%c", &_yp_plus);
+				rewind(netf);
+				if (_yp_plus == '+')
+					_use_only_yp = _netgr_yp_enabled = 1;
+			}
+		/*
+		 * If we were called specifically for an innetgr()
+		 * lookup and we're in NIS-only mode, short-circuit
+		 * parse_netgroup() and cut directly to the chase.
+		 */
+			if (_use_only_yp && _yp_innetgr) {
+				/* dohw! */
+				if (netf != NULL)
+					fclose(netf);
+				return;
+			}
+#else
+		if (netf = fopen(_PATH_NETGROUP, "r")) {
+#endif
+			if (parse_netgrp(group))
+				endnetgrent();
+			else {
+				grouphead.grname = (char *)
+					malloc(strlen(group) + 1);
+				strcpy(grouphead.grname, group);
+			}
+			if (netf)
+				fclose(netf);
+		}
+	}
+	nextgrp = grouphead.gr;
+}
+
+/*
+ * Get the next netgroup off the list.
+ */
+int
+getnetgrent(hostp, userp, domp)
+	char **hostp, **userp, **domp;
+{
+#ifdef YP
+	_yp_innetgr = 0;
+#endif
+
+	if (nextgrp) {
+		*hostp = nextgrp->ng_str[NG_HOST];
+		*userp = nextgrp->ng_str[NG_USER];
+		*domp = nextgrp->ng_str[NG_DOM];
+		nextgrp = nextgrp->ng_next;
+		return (1);
+	}
+	return (0);
+}
+
+/*
+ * endnetgrent() - cleanup
+ */
+void
+endnetgrent()
+{
+	register struct linelist *lp, *olp;
+	register struct netgrp *gp, *ogp;
+
+	lp = linehead;
+	while (lp) {
+		olp = lp;
+		lp = lp->l_next;
+		free(olp->l_groupname);
+		free(olp->l_line);
+		free((char *)olp);
+	}
+	linehead = (struct linelist *)0;
+	if (grouphead.grname) {
+		free(grouphead.grname);
+		grouphead.grname = (char *)0;
+	}
+	gp = grouphead.gr;
+	while (gp) {
+		ogp = gp;
+		gp = gp->ng_next;
+		if (ogp->ng_str[NG_HOST])
+			free(ogp->ng_str[NG_HOST]);
+		if (ogp->ng_str[NG_USER])
+			free(ogp->ng_str[NG_USER]);
+		if (ogp->ng_str[NG_DOM])
+			free(ogp->ng_str[NG_DOM]);
+		free((char *)ogp);
+	}
+	grouphead.gr = (struct netgrp *)0;
+#ifdef YP
+	_netgr_yp_enabled = 0;
+#endif
+}
+
+#ifdef YP
+static int _listmatch(list, group, len)
+char *list, *group;
+int len;
+{
+	char *ptr = list;
+
+	while (ptr != (char *)(list + len)) {
+		if (!strncmp(group, ptr, strlen(group)))
+			return(1);
+		ptr++;
+	}
+	return(0);
+}
+
+static int _buildkey(key, str, dom, rotation)
+char *key, *str, *dom;
+int *rotation;
+{
+	(*rotation)++;
+	if (*rotation > 4)
+		return(0);
+	switch(*rotation) {
+		case(1): sprintf((char *)key, "%s.%s", str, dom ? dom : "*");
+			 break;
+		case(2): sprintf((char *)key, "%s.*", str);
+			 break;
+		case(3): sprintf((char *)key, "*.%s", dom ? dom : "*");
+			 break;
+		case(4): sprintf((char *)key, "*.*");
+			 break;
+	}
+	return(1);
+}
+#endif
+
+/*
+ * Search for a match in a netgroup.
+ */
+int
+innetgr(group, host, user, dom)
+	char *group, *host, *user, *dom;
+{
+	char *hst, *usr, *dm;
+#ifdef YP
+	char *result;
+	int resultlen;
+#endif
+	/* Sanity check */
+	
+	if (group == NULL || !strlen(group))
+		return (0);
+
+#ifdef YP
+	_yp_innetgr = 1;
+#endif
+	setnetgrent(group);
+#ifdef YP
+	/*
+	 * If we're in NIS-only mode, do the search using
+	 * NIS 'reverse netgroup' lookups.
+	 */
+	if (_use_only_yp) {
+		char _key[MAXHOSTNAMELEN];
+		int rot = 0;
+
+		if(yp_get_default_domain(&_netgr_yp_domain))
+			return(0);
+		while(_buildkey(&_key, user ? user : host, dom, &rot)) {
+			if (yp_match(_netgr_yp_domain, user? "netgroup.byuser":
+			    "netgroup.byhost", _key, strlen(_key), &result,
+			    &resultlen))
+				free(result);
+			else {
+				if (_listmatch(result, group, resultlen)) {
+					free(result);
+					return(1);
+				}
+			}
+		}
+		free(result);
+#ifdef CHARITABLE
+	}
+	/*
+	 * Couldn't match using NIS-exclusive mode -- try
+	 * standard mode.
+	 */
+	_yp_innetgr = 0;
+	setnetgrent(group);
+#else
+		return(0);
+	}
+#endif /* CHARITABLE */
+#endif /* YP */
+	while (getnetgrent(&hst, &usr, &dm))
+		if ((host == NULL || hst == NULL || !strcmp(host, hst)) &&
+		    (user == NULL || usr == NULL || !strcmp(user, usr)) &&
+		    ( dom == NULL ||  dm == NULL || !strcmp(dom, dm))) {
+			endnetgrent();
+			return (1);
+		}
+	endnetgrent();
+	return (0);
+}
+
+/*
+ * Parse the netgroup file setting up the linked lists.
+ */
+static int
+parse_netgrp(group)
+	char *group;
+{
+	register char *spos, *epos;
+	register int len, strpos;
+#ifdef DEBUG
+	register int fields;
+#endif
+	char *pos, *gpos;
+	struct netgrp *grp;
+	struct linelist *lp = linehead;
+
+	/*
+	 * First, see if the line has already been read in.
+	 */
+	while (lp) {
+		if (!strcmp(group, lp->l_groupname))
+			break;
+		lp = lp->l_next;
+	}
+	if (lp == (struct linelist *)0 &&
+	    (lp = read_for_group(group)) == (struct linelist *)0)
+		return (1);
+	if (lp->l_parsed) {
+#ifdef DEBUG
+		/*
+		 * This error message is largely superflous since the
+		 * code handles the error condition sucessfully, and
+		 * spewing it out from inside libc can actually hose
+		 * certain programs.
+		 */
+		fprintf(stderr, "Cycle in netgroup %s\n", lp->l_groupname);
+#endif
+		return (1);
+	} else
+		lp->l_parsed = 1;
+	pos = lp->l_line;
+	/* Watch for null pointer dereferences, dammit! */
+	while (pos != NULL && *pos != '\0') {
+		if (*pos == '(') {
+			grp = (struct netgrp *)malloc(sizeof (struct netgrp));
+			bzero((char *)grp, sizeof (struct netgrp));
+			grp->ng_next = grouphead.gr;
+			grouphead.gr = grp;
+			pos++;
+			gpos = strsep(&pos, ")");
+#ifdef DEBUG
+			fields = 0;
+#endif
+			for (strpos = 0; strpos < 3; strpos++) {
+				if ((spos = strsep(&gpos, ","))) {
+#ifdef DEBUG
+					fields++;
+#endif
+					while (*spos == ' ' || *spos == '\t')
+						spos++;
+					if ((epos = strpbrk(spos, " \t"))) {
+						*epos = '\0';
+						len = epos - spos;
+					} else
+						len = strlen(spos);
+					if (len > 0) {
+						grp->ng_str[strpos] =  (char *)
+							malloc(len + 1);
+						bcopy(spos, grp->ng_str[strpos],
+							len + 1);
+					}
+				} else {
+					/*
+					 * All other systems I've tested
+					 * return NULL for empty netgroup
+					 * fields. It's up to user programs
+					 * to handle the NULLs appropriately.
+					 */
+					grp->ng_str[strpos] = NULL;
+				}
+			}
+#ifdef DEBUG
+			/*
+			 * Note: on other platforms, malformed netgroup
+			 * entries are not normally flagged. While we
+			 * can catch bad entries and report them, we should
+			 * stay silent by default for compatibility's sake.
+			 */
+			if (fields < 3)
+					fprintf(stderr, "Bad entry (%s%s%s%s%s) in netgroup \"%s\"\n",
+						grp->ng_str[NG_HOST] == NULL ? "" : grp->ng_str[NG_HOST],
+						grp->ng_str[NG_USER] == NULL ? "" : ",",
+						grp->ng_str[NG_USER] == NULL ? "" : grp->ng_str[NG_USER],
+						grp->ng_str[NG_DOM] == NULL ? "" : ",",
+						grp->ng_str[NG_DOM] == NULL ? "" : grp->ng_str[NG_DOM],
+						lp->l_groupname);
+#endif
+		} else {
+			spos = strsep(&pos, ", \t");
+			if (parse_netgrp(spos))
+				continue;
+		}
+		/* Watch for null pointer dereferences, dammit! */
+		if (pos != NULL)
+			while (*pos == ' ' || *pos == ',' || *pos == '\t')
+				pos++;
+	}
+	return (0);
+}
+
+/*
+ * Read the netgroup file and save lines until the line for the netgroup
+ * is found. Return 1 if eof is encountered.
+ */
+static struct linelist *
+read_for_group(group)
+	char *group;
+{
+	register char *pos, *spos, *linep, *olinep;
+	register int len, olen;
+	int cont;
+	struct linelist *lp;
+	char line[LINSIZ + 1];
+#ifdef YP
+	char *result;
+	int resultlen;
+
+	while (_netgr_yp_enabled || fgets(line, LINSIZ, netf) != NULL) {
+		if (_netgr_yp_enabled) {
+			if(!_netgr_yp_domain)
+				if(yp_get_default_domain(&_netgr_yp_domain))
+					continue;
+			if (yp_match(_netgr_yp_domain, "netgroup", group,
+					strlen(group), &result, &resultlen)) {
+				free(result);
+				if (_use_only_yp)
+					return ((struct linelist *)0);
+				else {
+					_netgr_yp_enabled = 0;
+					continue;
+				}
+			}
+			sprintf(line, "%s %s", group, result);
+			free(result);
+		}
+#else
+	while (fgets(line, LINSIZ, netf) != NULL) {
+#endif
+		pos = (char *)&line;
+#ifdef YP
+		if (*pos == '+') {
+			_netgr_yp_enabled = 1;
+			continue;
+		}
+#endif
+		if (*pos == '#')
+			continue;
+		while (*pos == ' ' || *pos == '\t')
+			pos++;
+		spos = pos;
+		while (*pos != ' ' && *pos != '\t' && *pos != '\n' &&
+			*pos != '\0')
+			pos++;
+		len = pos - spos;
+		while (*pos == ' ' || *pos == '\t')
+			pos++;
+		if (*pos != '\n' && *pos != '\0') {
+			lp = (struct linelist *)malloc(sizeof (*lp));
+			lp->l_parsed = 0;
+			lp->l_groupname = (char *)malloc(len + 1);
+			bcopy(spos, lp->l_groupname, len);
+			*(lp->l_groupname + len) = '\0';
+			len = strlen(pos);
+			olen = 0;
+
+			/*
+			 * Loop around handling line continuations.
+			 */
+			do {
+				if (*(pos + len - 1) == '\n')
+					len--;
+				if (*(pos + len - 1) == '\\') {
+					len--;
+					cont = 1;
+				} else
+					cont = 0;
+				if (len > 0) {
+					linep = (char *)malloc(olen + len + 1);
+					if (olen > 0) {
+						bcopy(olinep, linep, olen);
+						free(olinep);
+					}
+					bcopy(pos, linep + olen, len);
+					olen += len;
+					*(linep + olen) = '\0';
+					olinep = linep;
+				}
+				if (cont) {
+					if (fgets(line, LINSIZ, netf)) {
+						pos = line;
+						len = strlen(pos);
+					} else
+						cont = 0;
+				}
+			} while (cont);
+			lp->l_line = linep;
+			lp->l_next = linehead;
+			linehead = lp;
+
+			/*
+			 * If this is the one we wanted, we are done.
+			 */
+			if (!strcmp(lp->l_groupname, group))
+				return (lp);
+		}
+	}
+#ifdef YP
+	/*
+	 * Yucky. The recursive nature of this whole mess might require
+	 * us to make more than one pass through the netgroup file.
+	 * This might be best left outside the #ifdef YP, but YP is
+	 * defined by default anyway, so I'll leave it like this
+	 * until I know better.
+	 */
+	rewind(netf);
+#endif
+	return ((struct linelist *)0);
+}
diff --git a/lib/libc/gen/getosreldate.c b/lib/libc/gen/getosreldate.c
new file mode 100644
index 0000000..808e16b
--- /dev/null
+++ b/lib/libc/gen/getosreldate.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/* From:
+static char sccsid[] = "@(#)gethostid.c	8.1 (Berkeley) 6/2/93";
+*/
+static const char rcsid[] =
+  "$Id$";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+#if __STDC__
+int
+getosreldate(void)
+#else
+int
+getosreldate()
+#endif
+{
+	int mib[2];
+	size_t size;
+	int value;
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_OSRELDATE;
+	size = sizeof value;
+	if (sysctl(mib, 2, &value, &size, NULL, 0) == -1)
+		return (-1);
+	return (value);
+}
diff --git a/lib/libc/gen/getpagesize.3 b/lib/libc/gen/getpagesize.3
new file mode 100644
index 0000000..1a26297
--- /dev/null
+++ b/lib/libc/gen/getpagesize.3
@@ -0,0 +1,61 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getpagesize.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETPAGESIZE 3
+.Os BSD 4.2
+.Sh NAME
+.Nm getpagesize
+.Nd get system page size
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn getpagesize void
+.Sh DESCRIPTION
+.Fn Getpagesize
+returns the number of bytes in a page.
+Page granularity is the granularity of many of the memory
+management calls.
+.Pp
+The page size is a 
+.Xr system
+page size and may not be the same as the underlying
+hardware page size.
+.Sh SEE ALSO
+.Xr sbrk 2 ,
+.Xr pagesize 1
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/gen/getpagesize.c b/lib/libc/gen/getpagesize.c
new file mode 100644
index 0000000..d586cf6
--- /dev/null
+++ b/lib/libc/gen/getpagesize.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getpagesize.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+int
+getpagesize()
+{
+	int mib[2], value;
+	size_t size;
+
+	mib[0] = CTL_HW;
+	mib[1] = HW_PAGESIZE;
+	size = sizeof value;
+	if (sysctl(mib, 2, &value, &size, NULL, 0) == -1)
+		return (-1);
+	return (value);
+}
diff --git a/lib/libc/gen/getpass.3 b/lib/libc/gen/getpass.3
new file mode 100644
index 0000000..f312d42
--- /dev/null
+++ b/lib/libc/gen/getpass.3
@@ -0,0 +1,92 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getpass.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETPASS 3
+.Os
+.Sh NAME
+.Nm getpass
+.Nd get a password
+.Sh SYNOPSIS
+.Fd #include <pwd.h>
+.Fd #include <unistd.h>
+.Ft char *
+.Fn getpass "const char *prompt"
+.Sh DESCRIPTION
+The
+.Fn getpass
+function displays a prompt to, and reads in a password from,
+.Pa /dev/tty .
+If this file is not accessible,
+.Nm getpass
+displays the prompt on the standard error output and reads from the standard
+input.
+.Pp
+The password may be up to _PASSWORD_LEN (currently 128)
+characters in length.
+Any additional
+characters and the terminating newline character are discarded.
+.Pp
+.Nm Getpass
+turns off character echoing while reading the password.
+.Pp
+.Sh RETURN VALUES
+.Nm Getpass
+returns a pointer to the null terminated password.
+.Sh FILES
+.Bl -tag -width /dev/tty - compact
+.It Pa /dev/tty
+.El
+.Sh SEE ALSO
+.Xr crypt 3
+.Sh HISTORY
+A
+.Nm getpass
+function appeared in
+.At v7 .
+.Sh BUGS
+The
+.Nm getpass
+function leaves its result in an internal static object and returns
+a pointer to that object.
+Subsequent calls to
+.Nm getpass
+will modify the same object.
+.Pp
+The calling process should zero the password as soon as possible to
+avoid leaving the cleartext password visible in the process's address
+space.
+.Pp
+Upon receipt of a SIGTSTP, the input buffer will be flushed, so any
+partially typed password must be retyped when the process
+continues.
diff --git a/lib/libc/gen/getpass.c b/lib/libc/gen/getpass.c
new file mode 100644
index 0000000..658f5b6
--- /dev/null
+++ b/lib/libc/gen/getpass.c
@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getpass.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/termios.h>
+#include <signal.h>
+
+#include <paths.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <unistd.h>
+
+static	struct termios oterm, term;
+static	sig_t ointhandler, oquithandler, otstphandler, oconthandler;
+static	FILE *fp;
+
+static void
+sighandler(int signo)
+{
+	/* restore tty state */
+	(void)tcsetattr(fileno(fp), TCSAFLUSH|TCSASOFT, &oterm);
+
+	/* restore old sig handlers */
+	(void)signal(SIGINT, ointhandler);
+	(void)signal(SIGQUIT, oquithandler);
+	(void)signal(SIGTSTP, otstphandler);
+
+	/* resend us this signal */
+	(void)kill(getpid(), signo);
+}
+
+/* ARGSUSED */
+static void
+sigconthandler(int signo)
+{
+	/* re-install our signal handlers */
+	ointhandler = signal(SIGINT, sighandler);
+	oquithandler = signal(SIGQUIT, sighandler);
+	otstphandler = signal(SIGTSTP, sighandler);
+
+	/* turn off echo again */
+	(void)tcsetattr(fileno(fp), TCSAFLUSH|TCSASOFT, &term);
+}
+
+
+char *
+getpass(prompt)
+	const char *prompt;
+{
+	register int ch;
+	register char *p;
+	FILE *outfp;
+	long omask;
+	static char buf[_PASSWORD_LEN + 1];
+
+	/*
+	 * read and write to /dev/tty if possible; else read from
+	 * stdin and write to stderr.
+	 */
+	if ((outfp = fp = fopen(_PATH_TTY, "w+")) == NULL) {
+		outfp = stderr;
+		fp = stdin;
+	}
+
+	ointhandler = signal(SIGINT, sighandler);
+	oquithandler = signal(SIGQUIT, sighandler);
+	otstphandler = signal(SIGTSTP, sighandler);
+	oconthandler = signal(SIGCONT, sigconthandler);
+
+	(void)tcgetattr(fileno(fp), &oterm);
+	term = oterm;
+	term.c_lflag &= ~ECHO;
+	(void)tcsetattr(fileno(fp), TCSAFLUSH|TCSASOFT, &term);
+	(void)fputs(prompt, outfp);
+	rewind(outfp);			/* implied flush */
+	for (p = buf; (ch = getc(fp)) != EOF && ch != '\n';)
+		if (p < buf + _PASSWORD_LEN)
+			*p++ = ch;
+	*p = '\0';
+	(void)write(fileno(outfp), "\n", 1);
+	(void)tcsetattr(fileno(fp), TCSAFLUSH|TCSASOFT, &oterm);
+
+	/* restore old sig handlers */
+	(void)signal(SIGINT, ointhandler);
+	(void)signal(SIGQUIT, oquithandler);
+	(void)signal(SIGTSTP, otstphandler);
+	(void)signal(SIGCONT, oconthandler);
+
+	if (fp != stdin)
+		(void)fclose(fp);
+	return(buf);
+}
diff --git a/lib/libc/gen/getpwent.3 b/lib/libc/gen/getpwent.3
new file mode 100644
index 0000000..6c23f49
--- /dev/null
+++ b/lib/libc/gen/getpwent.3
@@ -0,0 +1,217 @@
+.\" Copyright (c) 1988, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     From: @(#)getpwent.3	8.2 (Berkeley) 12/11/93
+.\"
+.Dd September 20, 1994
+.Dt GETPWENT 3
+.Os
+.Sh NAME
+.Nm getpwent ,
+.Nm getpwnam ,
+.Nm getpwuid ,
+.Nm setpassent ,
+.Nm setpwent ,
+.Nm endpwent
+.Nd password database operations
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <pwd.h>
+.Ft struct passwd *
+.Fn getpwent void
+.Ft struct passwd *
+.Fn getpwnam "const char *login"
+.Ft struct passwd *
+.Fn getpwuid "uid_t uid" 
+.Ft int
+.Fn setpassent "int  stayopen"
+.Ft int
+.Fn setpwent void
+.Ft void
+.Fn endpwent void
+.Sh DESCRIPTION
+These functions
+operate on the password database file
+which is described
+in
+.Xr passwd 5 .
+Each entry in the database is defined by the structure
+.Ar passwd
+found in the include
+file
+.Aq Pa pwd.h :
+.Bd -literal -offset indent
+struct passwd {
+	char	*pw_name;	/* user name */
+	char	*pw_passwd;	/* encrypted password */
+	uid_t	pw_uid;		/* user uid */
+	gid_t	pw_gid;		/* user gid */
+	time_t	pw_change;	/* password change time */
+	char	*pw_class;	/* user access class */
+	char	*pw_gecos;	/* Honeywell login info */
+	char	*pw_dir;	/* home directory */
+	char	*pw_shell;	/* default shell */
+	time_t	pw_expire;	/* account expiration */
+};
+.Ed
+.Pp
+The functions
+.Fn getpwnam
+and
+.Fn getpwuid
+search the password database for the given login name or user uid,
+respectively, always returning the first one encountered.
+.Pp
+The
+.Fn getpwent
+function
+sequentially reads the password database and is intended for programs
+that wish to process the complete list of users.
+.Pp
+The
+.Fn setpassent
+function
+accomplishes two purposes.
+First, it causes
+.Fn getpwent
+to ``rewind'' to the beginning of the database.
+Additionally, if
+.Fa stayopen
+is non-zero, file descriptors are left open, significantly speeding
+up subsequent accesses for all of the routines.
+(This latter functionality is unnecessary for
+.Fn getpwent
+as it doesn't close its file descriptors by default.)
+.Pp
+It is dangerous for long-running programs to keep the file descriptors
+open as the database will become out of date if it is updated while the
+program is running.
+.Pp
+The
+.Fn setpwent
+function
+is identical to
+.Fn setpassent
+with an argument of zero.
+.Pp
+The
+.Fn endpwent
+function
+closes any open files.
+.Pp
+These routines have been written to ``shadow'' the password file, e.g.
+allow only certain programs to have access to the encrypted password.
+If the process which calls them has an effective uid of 0, the encrypted
+password will be returned, otherwise, the password field of the returned
+structure will point to the string
+.Ql * .
+.Sh YP/NIS INTERACTION
+When the
+.Xr yp 4
+password database is enabled, the
+.Fn getpwnam
+and
+.Fn getpwuid
+functions use the YP maps
+.Dq Li passwd.byname
+and
+.Dq Li passwd.byuid ,
+respectively, if the requested password entry is not found in the 
+local database.  The
+.Fn getpwent
+function will step through the YP map
+.Dq Li passwd.byname
+if the entire map is enabled as described in
+.Xr passwd 5 .
+.Sh RETURN VALUES
+The functions
+.Fn getpwent ,
+.Fn getpwnam ,
+and
+.Fn getpwuid ,
+return a valid pointer to a passwd structure on success
+and a null pointer if end-of-file is reached or an error occurs.
+The functions
+.Fn setpassent
+and
+.Fn setpwent
+return 0 on failure and 1 on success.
+The
+.Fn endpwent
+function
+has no return value.
+.Sh FILES
+.Bl -tag -width /etc/master.passwd -compact
+.It Pa /var/db/pwd.db
+The insecure password database file
+.It Pa /var/db/spwd.db
+The secure password database file
+.It Pa /etc/master.passwd
+The current password file
+.It Pa /etc/passwd
+A Version 7 format password file
+.El
+.Sh SEE ALSO
+.Xr getlogin 3 ,
+.Xr getgrent 3 ,
+.Xr passwd 5 ,
+.Xr pwd_mkdb 8 ,
+.Xr vipw 8 ,
+.Xr yp 4
+.Sh HISTORY
+The
+.Nm getpwent ,
+.Nm getpwnam ,
+.Nm getpwuid ,
+.Nm setpwent,
+and
+.Nm endpwent
+functions appeared in
+.At v7 .
+The
+.Nm setpassent
+function appeared in
+.Bx 4.3 Reno .
+.Sh COMPATIBILITY
+The historic function
+.Xr setpwfile 3 ,
+which allowed the specification of alternate password databases,
+has been deprecated and is no longer available.
+.Sh BUGS
+The functions
+.Fn getpwent ,
+.Fn getpwnam ,
+and
+.Fn getpwuid ,
+leave their results in an internal static object and return
+a pointer to that object. Subsequent calls to
+the same function
+will modify the same object.
diff --git a/lib/libc/gen/getpwent.c b/lib/libc/gen/getpwent.c
new file mode 100644
index 0000000..a3e32ad
--- /dev/null
+++ b/lib/libc/gen/getpwent.c
@@ -0,0 +1,775 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getpwent.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <sys/param.h>
+#include <fcntl.h>
+#include <db.h>
+#include <syslog.h>
+#include <pwd.h>
+#include <utmp.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <grp.h>
+
+static struct passwd _pw_passwd;	/* password structure */
+static DB *_pw_db;			/* password database */
+static int _pw_keynum;			/* key counter */
+static int _pw_stayopen;		/* keep fd's open */
+#ifdef YP
+#include <rpc/rpc.h>
+#include <rpcsvc/yp_prot.h>
+#include <rpcsvc/ypclnt.h>
+struct _namelist {
+	char *name;
+	struct _namelist *next;
+};
+static struct passwd _pw_copy;
+struct _pw_cache {
+	struct passwd pw_entry;
+	struct _namelist *namelist;
+	struct _pw_cache *next;
+};
+static int _pluscnt, _minuscnt;
+static struct _pw_cache *_plushead = NULL, *_minushead = NULL;
+static void _createcaches(), _freecaches();
+static int _scancaches(char *);
+static int _yp_enabled;			/* set true when yp enabled */
+static int _pw_stepping_yp;		/* set true when stepping thru map */
+static int _yp_done;
+static int _gotmaster;
+static char *_pw_yp_domain;
+static int _havemaster(char *);
+static int _getyppass(struct passwd *, const char *, const char *);
+static int _nextyppass(struct passwd *);
+#endif
+static int __hashpw(), __initdb();
+
+struct passwd *
+getpwent()
+{
+	DBT key;
+	char bf[sizeof(_pw_keynum) + 1];
+	int rv;
+
+	if (!_pw_db && !__initdb())
+		return((struct passwd *)NULL);
+
+#ifdef YP
+	if(_pw_stepping_yp) {
+		_pw_passwd = _pw_copy;
+		if (_nextyppass(&_pw_passwd))
+			return (&_pw_passwd);
+		else
+			_yp_done = 1;
+	}
+#endif
+tryagain:
+
+	++_pw_keynum;
+	bf[0] = _PW_KEYBYNUM;
+	bcopy((char *)&_pw_keynum, bf + 1, sizeof(_pw_keynum));
+	key.data = (u_char *)bf;
+	key.size = sizeof(_pw_keynum) + 1;
+	rv = __hashpw(&key);
+	if(!rv) return (struct passwd *)NULL;
+#ifdef YP
+	if(_pw_passwd.pw_name[0] == '+' || _pw_passwd.pw_name[0] == '-') {
+		_pw_copy = _pw_passwd;
+		if (_yp_done || !_nextyppass(&_pw_passwd))
+			goto tryagain;
+		else
+			return (&_pw_passwd);
+	}
+#else
+	/* Ignore YP password file entries when YP is disabled. */
+	if(_pw_passwd.pw_name[0] == '+' || _pw_passwd.pw_name[0] == '-') {
+		goto tryagain;
+	}
+#endif
+	return(&_pw_passwd);
+}
+
+struct passwd *
+getpwnam(name)
+	const char *name;
+{
+	DBT key;
+	int len, rval;
+	char bf[UT_NAMESIZE + 2];
+
+	if (!_pw_db && !__initdb())
+		return((struct passwd *)NULL);
+
+	bf[0] = _PW_KEYBYNAME;
+	len = strlen(name);
+	bcopy(name, bf + 1, MIN(len, UT_NAMESIZE));
+	key.data = (u_char *)bf;
+	key.size = len + 1;
+	rval = __hashpw(&key);
+
+#ifdef YP
+	if (!rval && _yp_enabled)
+		rval = _getyppass(&_pw_passwd, name, "passwd.byname");
+#endif
+	/*
+	 * Prevent login attempts when YP is not enabled but YP entries
+	 * are in /etc/master.passwd.
+	 */
+	if (rval && (_pw_passwd.pw_name[0] == '+'||
+			_pw_passwd.pw_name[0] == '-')) rval = 0;
+
+	endpwent();
+	return(rval ? &_pw_passwd : (struct passwd *)NULL);
+}
+
+struct passwd *
+#ifdef __STDC__
+getpwuid(uid_t uid)
+#else
+getpwuid(uid)
+	int uid;
+#endif
+{
+	DBT key;
+	int keyuid, rval;
+	char bf[sizeof(keyuid) + 1];
+
+	if (!_pw_db && !__initdb())
+		return((struct passwd *)NULL);
+
+	bf[0] = _PW_KEYBYUID;
+	keyuid = uid;
+	bcopy(&keyuid, bf + 1, sizeof(keyuid));
+	key.data = (u_char *)bf;
+	key.size = sizeof(keyuid) + 1;
+	rval = __hashpw(&key);
+
+#ifdef YP
+	if (!rval && _yp_enabled) {
+		char ypbuf[16];	/* big enough for 32-bit uids and then some */
+		snprintf(ypbuf, sizeof ypbuf, "%u", (unsigned)uid);
+		rval = _getyppass(&_pw_passwd, ypbuf, "passwd.byuid");
+	}
+#endif
+	/*
+	 * Prevent login attempts when YP is not enabled but YP entries
+	 * are in /etc/master.passwd.
+	 */
+	if (rval && (_pw_passwd.pw_name[0] == '+'||
+			_pw_passwd.pw_name[0] == '-')) rval = 0;
+
+	endpwent();
+	return(rval ? &_pw_passwd : (struct passwd *)NULL);
+}
+
+int
+setpassent(stayopen)
+	int stayopen;
+{
+	_pw_keynum = 0;
+#ifdef YP
+	_pw_stepping_yp = _yp_done = 0;
+#endif
+	_pw_stayopen = stayopen;
+	return(1);
+}
+
+int
+setpwent()
+{
+	_pw_keynum = 0;
+#ifdef YP
+	_pw_stepping_yp = _yp_done = 0;
+#endif
+	_pw_stayopen = 0;
+	return(1);
+}
+
+void
+endpwent()
+{
+	_pw_keynum = 0;
+#ifdef YP
+	_pw_stepping_yp = _yp_done = 0;
+#endif
+	if (_pw_db) {
+		(void)(_pw_db->close)(_pw_db);
+		_pw_db = (DB *)NULL;
+#ifdef YP
+		_freecaches();
+#endif
+	}
+}
+
+static
+__initdb()
+{
+	static int warned;
+	char *p;
+
+	p = (geteuid()) ? _PATH_MP_DB : _PATH_SMP_DB;
+	_pw_db = dbopen(p, O_RDONLY, 0, DB_HASH, NULL);
+	if (_pw_db) {
+#ifdef YP
+		DBT key, data;
+		char buf[] = { _PW_KEYYPENABLED };
+		key.data = buf;
+		key.size = 1;
+		if ((_pw_db->get)(_pw_db, &key, &data, 0)) {
+			_yp_enabled = 0;
+		} else {
+			_yp_enabled = (int)*((char *)data.data) - 2;
+			_createcaches();
+		/* Don't even bother with this if we aren't root. */
+			if (!geteuid()) {
+				if (!_pw_yp_domain)
+					if (yp_get_default_domain(&_pw_yp_domain))
+					return(1);
+				_gotmaster = _havemaster(_pw_yp_domain);
+			} else _gotmaster = 0;
+		}
+#endif
+		return(1);
+	}
+	if (!warned)
+		syslog(LOG_ERR, "%s: %m", p);
+	return(0);
+}
+
+static
+__hashpw(key)
+	DBT *key;
+{
+	register char *p, *t;
+	static u_int max;
+	static char *line;
+	DBT data;
+
+	if ((_pw_db->get)(_pw_db, key, &data, 0))
+		return(0);
+	p = (char *)data.data;
+	if (data.size > max && !(line = realloc(line, max += 1024)))
+		return(0);
+
+	t = line;
+#define	EXPAND(e)	e = t; while (*t++ = *p++);
+	EXPAND(_pw_passwd.pw_name);
+	EXPAND(_pw_passwd.pw_passwd);
+	bcopy(p, (char *)&_pw_passwd.pw_uid, sizeof(int));
+	p += sizeof(int);
+	bcopy(p, (char *)&_pw_passwd.pw_gid, sizeof(int));
+	p += sizeof(int);
+	bcopy(p, (char *)&_pw_passwd.pw_change, sizeof(time_t));
+	p += sizeof(time_t);
+	EXPAND(_pw_passwd.pw_class);
+	EXPAND(_pw_passwd.pw_gecos);
+	EXPAND(_pw_passwd.pw_dir);
+	EXPAND(_pw_passwd.pw_shell);
+	bcopy(p, (char *)&_pw_passwd.pw_expire, sizeof(time_t));
+	p += sizeof(time_t);
+	bcopy(p, (char *)&_pw_passwd.pw_fields, sizeof _pw_passwd.pw_fields);
+	p += sizeof _pw_passwd.pw_fields;
+	return(1);
+}
+
+#ifdef YP
+/*
+ * Build special +@netgroup and -@netgroup caches. We also handle ordinary
+ * +user/-user entries, *and* +@group/-@group entries, which are special
+ * cases of the +@netgroup/-@netgroup substitutions: if we can't find
+ * netgroup 'foo', we look for a regular user group called 'foo' and
+ * match against that instead. The netgroup takes precedence since the
+ * +group/-group support is basically just a hack to make Justin T. Gibbs
+ * happy. :) Sorting out all the funny business here lets us have a
+ * yp_enabled flag with a simple on or off value instead of the somewhat
+ * bogus setup we had before.
+ *
+ * We cache everything here in one shot so that we only have to scan
+ * each netgroup/group once. The alternative is to use innetgr() inside the
+ * NIS lookup functions, which would make retrieving the whole password
+ * database though getpwent() very slow. +user/-user entries are treated
+ * like @groups/@netgroups with only one member.
+ */
+static void
+_createcaches()
+{
+	DBT key, data;
+	int i;
+	char bf[UT_NAMESIZE + 2];
+	struct _pw_cache *p, *m;
+	struct _namelist *n, *namehead;
+	char *user, *host, *domain;
+	struct group *grp;
+
+	/*
+	 * Assume that the database has already been initialized
+	 * but be paranoid and check that YP is in fact enabled.
+	 */
+
+	if (!_yp_enabled)
+		return;
+	/*
+	 * For the plus list, we have to store both the linked list of
+	 * names and the +entries from the password database so we can
+	 * do the substitution later if we find a match.
+	 */
+	bf[0] = _PW_KEYPLUSCNT;
+	key.data = (u_char*)bf;
+	key.size = 1;
+	if (!(_pw_db->get)(_pw_db, &key, &data, 0)) {
+		_pluscnt = (int)*((char *)data.data);
+		for (i = 0; i < _pluscnt; i++) {
+			bf[0] = _PW_KEYPLUSBYNUM;
+			bcopy(&i, bf + 1, sizeof(i) + 1);
+			key.size = (sizeof(i)) + 1;
+			if (__hashpw(&key)) {
+				p = (struct _pw_cache *)malloc(sizeof (struct _pw_cache));
+				if (strlen(_pw_passwd.pw_name) > 2 && _pw_passwd.pw_name[1] == '@') {
+					setnetgrent(_pw_passwd.pw_name+2);
+					namehead = NULL;
+					while(getnetgrent(&host, &user, &domain)) {
+						n = (struct _namelist *)malloc(sizeof (struct _namelist));
+						n->name = strdup(user);
+						n->next = namehead;
+						namehead = n;
+					}
+					/*
+					 * If netgroup 'foo' doesn't exist,
+					 * try group 'foo' instead.
+					 */
+					if (namehead == NULL && (grp = getgrnam(_pw_passwd.pw_name+2)) != NULL) {
+						while(*grp->gr_mem) {
+							n = (struct _namelist *)malloc(sizeof (struct _namelist));
+							n->name = strdup(*grp->gr_mem);
+							n->next = namehead;
+							namehead = n;
+							grp->gr_mem++;
+						}
+					}
+				} else {
+					if (_pw_passwd.pw_name[1] != '@') {
+						namehead = (struct _namelist *)malloc(sizeof (struct _namelist));
+						namehead->name = strdup(_pw_passwd.pw_name+1);
+						namehead->next = NULL;
+					}
+				}
+				p->namelist = namehead;
+				p->pw_entry.pw_name = strdup(_pw_passwd.pw_name);
+				p->pw_entry.pw_passwd = strdup(_pw_passwd.pw_passwd);
+				p->pw_entry.pw_uid = _pw_passwd.pw_uid;
+				p->pw_entry.pw_gid = _pw_passwd.pw_gid;
+				p->pw_entry.pw_expire = _pw_passwd.pw_expire;
+				p->pw_entry.pw_change = _pw_passwd.pw_change;
+				p->pw_entry.pw_class = strdup(_pw_passwd.pw_class);
+				p->pw_entry.pw_gecos = strdup(_pw_passwd.pw_gecos);
+				p->pw_entry.pw_dir = strdup(_pw_passwd.pw_dir);
+				p->pw_entry.pw_shell = strdup(_pw_passwd.pw_shell);
+				p->pw_entry.pw_fields = _pw_passwd.pw_fields;
+				p->next = _plushead;
+				_plushead = p;
+			}
+		}
+	}
+
+	/*
+	 * All we need for the minuslist is the usernames.
+	 * The actual -entries data can be ignored since no substitution
+	 * will be done: anybody on the minus list is treated like a
+	 * non-person.
+	 */
+	bf[0] = _PW_KEYMINUSCNT;
+	key.data = (u_char*)bf;
+	key.size = 1;
+	if (!(_pw_db->get)(_pw_db, &key, &data, 0)) {
+		_minuscnt = (int)*((char *)data.data);
+		for (i = _minuscnt; i > -1; i--) {
+			bf[0] = _PW_KEYMINUSBYNUM;
+			bcopy(&i, bf + 1, sizeof(i) + 1);
+			key.size = (sizeof(i)) + 1;
+			if (__hashpw(&key)) {
+				m = (struct _pw_cache *)malloc(sizeof (struct _pw_cache));
+				if (strlen (_pw_passwd.pw_name) > 2 && _pw_passwd.pw_name[1] == '@') {
+					namehead = NULL;
+					setnetgrent(_pw_passwd.pw_name+2);
+					while(getnetgrent(&host, &user, &domain)) {
+						n = (struct _namelist *)malloc(sizeof (struct _namelist));
+						n->name = strdup(user);
+						n->next = namehead;
+						namehead = n;
+					}
+					/*
+					 * If netgroup 'foo' doesn't exist,
+					 * try group 'foo' instead.
+					 */
+					if (namehead == NULL && (grp = getgrnam(_pw_passwd.pw_name+2)) != NULL) {
+						while(*grp->gr_mem) {
+							n = (struct _namelist *)malloc(sizeof (struct _namelist));
+							n->name = strdup(*grp->gr_mem);
+							n->next = namehead;
+							namehead = n;
+							grp->gr_mem++;
+						}
+					}
+				} else {
+					if (_pw_passwd.pw_name[1] != '@') {
+						namehead = (struct _namelist *)malloc(sizeof (struct _namelist));
+						namehead->name = strdup(_pw_passwd.pw_name+1);
+						namehead->next = NULL;
+					}
+				}
+				/* Save just the name */
+				m->pw_entry.pw_name = strdup(_pw_passwd.pw_name);
+				m->namelist = namehead;
+				m->next = _minushead;
+				_minushead = m;
+			}
+		}
+	}
+	endgrent();
+	endnetgrent();
+}
+
+/*
+ * Free the +@netgroup/-@netgroup caches. Should be called
+ * from endpwent(). We have to blow away both the list of
+ * netgroups and the attached linked lists of usernames.
+ */
+static void
+_freecaches()
+{
+struct _pw_cache *p, *m;
+struct _namelist *n;
+
+	while (_plushead) {
+		while(_plushead->namelist) {
+			n = _plushead->namelist->next;
+			free(_plushead->namelist->name);
+			free(_plushead->namelist);
+			_plushead->namelist = n;
+		}
+		free(_plushead->pw_entry.pw_name);
+		free(_plushead->pw_entry.pw_passwd);
+		free(_plushead->pw_entry.pw_class);
+		free(_plushead->pw_entry.pw_gecos);
+		free(_plushead->pw_entry.pw_dir);
+		free(_plushead->pw_entry.pw_shell);
+		p = _plushead->next;
+		free(_plushead);
+		_plushead = p;
+	}
+
+	while(_minushead) {
+		while(_minushead->namelist) {
+			n = _minushead->namelist->next;
+			free(_minushead->namelist->name);
+			free(_minushead->namelist);
+			_minushead->namelist = n;
+		}
+		m = _minushead->next;
+		free(_minushead);
+		_minushead = m;
+	}
+	_pluscnt = _minuscnt = 0;
+}
+
+static int _scancaches(user)
+char *user;
+{
+	register struct _pw_cache *m, *p;
+	register struct _namelist *n;
+
+	if (_minuscnt && _minushead) {
+		m = _minushead;
+		while (m) {
+			n = m->namelist;
+			while (n) {
+				if (!strcmp(n->name,user) || *n->name == '\0')
+					return (1);
+				n = n->next;
+			}
+			m = m->next;
+		}
+	}
+	if (_pluscnt && _plushead) {
+		p = _plushead;
+		while (p) {
+			n = p->namelist;
+			while (n) {
+				if (!strcmp(n->name, user) || *n->name == '\0')
+					bcopy((char *)&p->pw_entry,
+					(char *)&_pw_passwd, sizeof(p->pw_entry));
+				n = n->next;
+			}
+			p = p->next;
+		}
+	}
+	return(0);
+}
+
+static int
+_pw_breakout_yp(struct passwd *pw, char *res, int master)
+{
+	char *s, *result;
+	static char resbuf[YPMAXRECORD+2];
+
+	/*
+	 * Be triple, ultra super-duper paranoid: reject entries
+	 * that start with a + or -. yp_mkdb and /var/yp/Makefile
+	 * are _both_ supposed to strip these out, but you never
+	 * know.
+	 */
+	if (*res == '+' || *res == '-')
+		return 0;
+
+	/*
+	 * The NIS protocol definition limits the size of an NIS
+	 * record to YPMAXRECORD bytes. We need to do a copy to
+	 * a static buffer here since the memory pointed to by
+	 * res will be free()ed when this function returns.
+	 */
+	strncpy((char *)&resbuf, res, YPMAXRECORD);
+	result = (char *)&resbuf;
+
+	/*
+	 * XXX Sanity check: make sure all fields are valid (no NULLs).
+	 * If we find a badly formatted entry, we punt.
+	 */
+	if ((s = strsep(&result, ":")) == NULL) return 0; /* name */
+	/*
+	 * We don't care what pw_fields says: we _always_ want the
+	 * username returned to us by NIS.
+	 */
+	pw->pw_name = s;
+	pw->pw_fields |= _PWF_NAME;
+
+	if ((s = strsep(&result, ":")) == NULL) return 0; /* password */
+	if(!(pw->pw_fields & _PWF_PASSWD)) {
+		pw->pw_passwd = s;
+		pw->pw_fields |= _PWF_PASSWD;
+	}
+
+	if ((s = strsep(&result, ":")) == NULL) return 0; /* uid */
+	if(!(pw->pw_fields & _PWF_UID)) {
+		pw->pw_uid = atoi(s);
+		pw->pw_fields |= _PWF_UID;
+	}
+
+	if ((s = strsep(&result, ":")) == NULL) return 0; /* gid */
+	if(!(pw->pw_fields & _PWF_GID))  {
+		pw->pw_gid = atoi(s);
+		pw->pw_fields |= _PWF_GID;
+	}
+
+	if (master) {
+		if ((s = strsep(&result, ":")) == NULL) return 0; /* class */
+		if(!(pw->pw_fields & _PWF_CLASS))  {
+			pw->pw_class = s;
+			pw->pw_fields |= _PWF_CLASS;
+		}
+
+		if ((s = strsep(&result, ":")) == NULL) return 0; /* change */
+		if(!(pw->pw_fields & _PWF_CHANGE))  {
+			pw->pw_change = atol(s);
+			pw->pw_fields |= _PWF_CHANGE;
+		}
+
+		if ((s = strsep(&result, ":")) == NULL) return 0; /* expire */
+		if(!(pw->pw_fields & _PWF_EXPIRE))  {
+			pw->pw_expire = atol(s);
+			pw->pw_fields |= _PWF_EXPIRE;
+		}
+	}
+
+	if ((s = strsep(&result, ":")) == NULL) return 0; /* gecos */
+	if(!(pw->pw_fields & _PWF_GECOS)) {
+		pw->pw_gecos = s;
+		pw->pw_fields |= _PWF_GECOS;
+	}
+
+	if ((s = strsep(&result, ":")) == NULL) return 0; /* dir */
+	if(!(pw->pw_fields & _PWF_DIR)) {
+		pw->pw_dir = s;
+		pw->pw_fields |= _PWF_DIR;
+	}
+
+	if ((s = strsep(&result, ":")) == NULL) return 0; /* shell */
+	if(!(pw->pw_fields & _PWF_SHELL)) {
+		pw->pw_shell = s;
+		pw->pw_fields |= _PWF_SHELL;
+	}
+
+	/* Be consistent. */
+	if ((s = strchr(pw->pw_shell, '\n'))) *s = '\0';
+
+	return 1;
+}
+
+static int
+_havemaster(char *_pw_yp_domain)
+{
+	int keylen, resultlen;
+	char *key, *result;
+
+	if (yp_first(_pw_yp_domain, "master.passwd.byname",
+		&key, &keylen, &result, &resultlen)) {
+		free(result);
+		return 0;
+	}
+	free(result);
+	return 1;
+}
+
+static int
+_getyppass(struct passwd *pw, const char *name, const char *map)
+{
+	char *result, *s;
+	int resultlen;
+	int rv;
+	char mastermap[1024];
+
+	if(!_pw_yp_domain) {
+		if(yp_get_default_domain(&_pw_yp_domain))
+		  return 0;
+	}
+
+	sprintf(mastermap,"%s",map);
+
+	if (_gotmaster)
+		sprintf(mastermap,"master.%s", map);
+
+	if(yp_match(_pw_yp_domain, (char *)&mastermap, name, strlen(name),
+		    &result, &resultlen))
+		return 0;
+
+	s = strchr(result, ':');
+	if (s) {
+		*s = '\0';
+	} else {
+		/* Must be a malformed entry if no colons. */
+		free(result);
+		return(0);
+	}
+	_pw_passwd.pw_fields = -1; /* Impossible value */
+	if (_scancaches(result)) {
+		free(result);
+		return(0);
+	}
+	/* No hits in the plus or minus lists: Bzzt! reject. */
+	if (_pw_passwd.pw_fields == -1) {
+		free(result);
+		return(0);
+	}
+	*s = ':'; /* Put back the colon we previously replaced with a NUL. */
+	rv = _pw_breakout_yp(pw, result, _gotmaster);
+	free(result);
+	return(rv);
+}
+
+static int
+_nextyppass(struct passwd *pw)
+{
+	static char *key;
+	static int keylen;
+	char *lastkey, *result, *s;
+	int resultlen;
+	int rv;
+	char *map = "passwd.byname";
+
+	if(!_pw_yp_domain) {
+		if(yp_get_default_domain(&_pw_yp_domain))
+		  return 0;
+	}
+
+	if (_gotmaster)
+		map = "master.passwd.byname";
+
+	if(!_pw_stepping_yp) {
+		if(key) free(key);
+			rv = yp_first(_pw_yp_domain, map,
+				      &key, &keylen, &result, &resultlen);
+		if(rv) {
+			return 0;
+		}
+		_pw_stepping_yp = 1;
+		goto unpack;
+	} else {
+tryagain:
+		lastkey = key;
+			rv = yp_next(_pw_yp_domain, map, key, keylen,
+			     &key, &keylen, &result, &resultlen);
+		free(lastkey);
+unpack:
+		if(rv) {
+			_pw_stepping_yp = 0;
+			return 0;
+		}
+
+		s = strchr(result, ':');
+		if (s) {
+			*s = '\0';
+		} else {
+			/* Must be a malformed entry if no colon. */
+			free(result);
+			goto tryagain;
+		}
+		_pw_passwd.pw_fields = -1; /* Impossible value */
+		if (_scancaches(result)) {
+			free(result);
+			goto tryagain;
+		}
+		/* No plus or minus hits: Bzzzt! reject. */
+		if (_pw_passwd.pw_fields == -1) {
+			free(result);
+			goto tryagain;
+		}
+		*s = ':';	/* Put back colon we previously replaced with a NUL. */
+		if(s = strchr(result, '\n')) *s = '\0';
+		if (_pw_breakout_yp(pw, result, _gotmaster)) {
+			free(result);
+			return(1);
+		} else {
+			free(result);
+			goto tryagain;
+		}
+	}
+}
+
+#endif /* YP */
diff --git a/lib/libc/gen/getttyent.3 b/lib/libc/gen/getttyent.3
new file mode 100644
index 0000000..7ee453d
--- /dev/null
+++ b/lib/libc/gen/getttyent.3
@@ -0,0 +1,177 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getttyent.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETTTYENT 3
+.Os BSD 4.3
+.Sh NAME
+.Nm getttyent ,
+.Nm getttynam ,
+.Nm setttyent ,
+.Nm endttyent
+.Nd get ttys file entry
+.Sh SYNOPSIS
+.Fd #include <ttyent.h>
+.Ft struct ttyent *
+.Fn getttyent
+.Ft struct ttyent *
+.Fn getttynam "char *name"
+.Ft int
+.Fn setttyent void
+.Ft int
+.Fn endttyent void
+.Sh DESCRIPTION
+The
+.Fn getttyent ,
+and
+.Fn getttynam
+functions
+each return a pointer to an object, with the following structure,
+containing the broken-out fields of a line from the tty description
+file.
+.Bd -literal
+struct ttyent {
+	char	*ty_name;	/* terminal device name */
+	char	*ty_getty;	/* command to execute */
+	char	*ty_type;	/* terminal type */
+#define	TTY_ON		0x01	/* enable logins */
+#define	TTY_SECURE	0x02	/* allow uid of 0 to login */
+	int	ty_status;	/* flag values */
+	char	*ty_window;	/* command for window manager */
+	char	*ty_comment;	/* comment field */
+};
+.Ed
+.Pp
+The fields are as follows:
+.Bl -tag -width ty_comment
+.It Fa ty_name
+The name of the character-special file.
+.It Fa ty_getty
+The name of the command invoked by
+.Xr init 8
+to initialize tty line characteristics.
+.It Fa ty_type
+The name of the default terminal type connected to this tty line.
+.It Fa ty_status
+A mask of bit fields which indicate various actions allowed on this
+tty line.
+The possible flags are as follows:
+.Bl -tag -width TTY_SECURE
+.It Dv TTY_ON
+Enables logins (i.e.,
+.Xr init 8
+will start the command referenced by
+.Fa ty_getty
+on this entry).
+.It Dv TTY_SECURE
+Allow users with a uid of 0 to login on this terminal.
+.El
+.It Fa ty_window
+The command to execute for a window system associated with the line.
+.It Fa ty_comment
+Any trailing comment field, with any leading hash marks (``#'') or
+whitespace removed.
+.El
+.Pp
+If any of the fields pointing to character strings are unspecified,
+they are returned as null pointers.
+The field
+.Fa ty_status
+will be zero if no flag values are specified.
+.Pp
+See
+.Xr ttys 5
+for a more complete discussion of the meaning and usage of the
+fields.
+.Pp
+The
+.Fn getttyent
+function
+reads the next line from the ttys file, opening the file if necessary.
+The
+.Fn setttyent
+function
+rewinds the file if open, or opens the file if it is unopened.
+The
+.Fn endttyent
+function
+closes any open files.
+.Pp
+The
+.Fn getttynam
+function
+searches from the beginning of the file until a matching
+.Fa name
+is found
+(or until
+.Dv EOF
+is encountered).
+.Sh RETURN VALUES
+The routines
+.Fn getttyent
+and
+.Fn getttynam
+return a null pointer on
+.Dv EOF
+or error.
+The
+.Fn setttyent
+function
+and
+.Fn endttyent
+return 0 on failure and 1 on success.
+.Sh FILES
+.Bl -tag -width /etc/ttys -compact
+.It Pa /etc/ttys
+.El
+.Sh SEE ALSO
+.Xr login 1 ,
+.Xr ttyslot 3 ,
+.Xr gettytab 5 ,
+.Xr termcap 5 ,
+.Xr ttys 5 ,
+.Xr getty 8 ,
+.Xr init 8
+.Sh HISTORY
+The
+.Fn getttyent ,
+.Fn getttynam ,
+.Fn setttyent ,
+and
+.Fn endttyent
+functions appeared in
+.Bx 4.3 .
+.Sh BUGS
+These functions use static data storage;
+if the data is needed for future use, it should be
+copied before any subsequent calls overwrite it.
diff --git a/lib/libc/gen/getttyent.c b/lib/libc/gen/getttyent.c
new file mode 100644
index 0000000..83f97e8
--- /dev/null
+++ b/lib/libc/gen/getttyent.c
@@ -0,0 +1,199 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getttyent.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <ttyent.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+
+static char zapchar;
+static FILE *tf;
+
+struct ttyent *
+getttynam(tty)
+	const char *tty;
+{
+	register struct ttyent *t;
+
+	setttyent();
+	while (t = getttyent())
+		if (!strcmp(tty, t->ty_name))
+			break;
+	endttyent();
+	return (t);
+}
+
+struct ttyent *
+getttyent()
+{
+	static struct ttyent tty;
+	register int c;
+	register char *p;
+#define	MAXLINELENGTH	100
+	static char line[MAXLINELENGTH];
+	static char *skip(), *value();
+
+	if (!tf && !setttyent())
+		return (NULL);
+	for (;;) {
+		if (!fgets(p = line, sizeof(line), tf))
+			return (NULL);
+		/* skip lines that are too big */
+		if (!index(p, '\n')) {
+			while ((c = getc(tf)) != '\n' && c != EOF)
+				;
+			continue;
+		}
+		while (isspace(*p))
+			++p;
+		if (*p && *p != '#')
+			break;
+	}
+
+	zapchar = 0;
+	tty.ty_name = p;
+	p = skip(p);
+	if (!*(tty.ty_getty = p))
+		tty.ty_getty = tty.ty_type = NULL;
+	else {
+		p = skip(p);
+		if (!*(tty.ty_type = p))
+			tty.ty_type = NULL;
+		else
+			p = skip(p);
+	}
+	tty.ty_status = 0;
+	tty.ty_window = NULL;
+
+#define	scmp(e)	!strncmp(p, e, sizeof(e) - 1) && isspace(p[sizeof(e) - 1])
+#define	vcmp(e)	!strncmp(p, e, sizeof(e) - 1) && p[sizeof(e) - 1] == '='
+	for (; *p; p = skip(p)) {
+		if (scmp(_TTYS_OFF))
+			tty.ty_status &= ~TTY_ON;
+		else if (scmp(_TTYS_ON))
+			tty.ty_status |= TTY_ON;
+		else if (scmp(_TTYS_SECURE))
+			tty.ty_status |= TTY_SECURE;
+		else if (vcmp(_TTYS_WINDOW))
+			tty.ty_window = value(p);
+		else
+			break;
+	}
+
+	if (zapchar == '#' || *p == '#')
+		while ((c = *++p) == ' ' || c == '\t')
+			;
+	tty.ty_comment = p;
+	if (*p == 0)
+		tty.ty_comment = 0;
+	if (p = index(p, '\n'))
+		*p = '\0';
+	return (&tty);
+}
+
+#define	QUOTED	1
+
+/*
+ * Skip over the current field, removing quotes, and return a pointer to
+ * the next field.
+ */
+static char *
+skip(p)
+	register char *p;
+{
+	register char *t;
+	register int c, q;
+
+	for (q = 0, t = p; (c = *p) != '\0'; p++) {
+		if (c == '"') {
+			q ^= QUOTED;	/* obscure, but nice */
+			continue;
+		}
+		if (q == QUOTED && *p == '\\' && *(p+1) == '"')
+			p++;
+		*t++ = *p;
+		if (q == QUOTED)
+			continue;
+		if (c == '#') {
+			zapchar = c;
+			*p = 0;
+			break;
+		}
+		if (c == '\t' || c == ' ' || c == '\n') {
+			zapchar = c;
+			*p++ = 0;
+			while ((c = *p) == '\t' || c == ' ' || c == '\n')
+				p++;
+			break;
+		}
+	}
+	*--t = '\0';
+	return (p);
+}
+
+static char *
+value(p)
+	register char *p;
+{
+
+	return ((p = index(p, '=')) ? ++p : NULL);
+}
+
+int
+setttyent()
+{
+
+	if (tf) {
+		rewind(tf);
+		return (1);
+	} else if (tf = fopen(_PATH_TTYS, "r"))
+		return (1);
+	return (0);
+}
+
+int
+endttyent()
+{
+	int rval;
+
+	if (tf) {
+		rval = !(fclose(tf) == EOF);
+		tf = NULL;
+		return (rval);
+	}
+	return (1);
+}
diff --git a/lib/libc/gen/getusershell.3 b/lib/libc/gen/getusershell.3
new file mode 100644
index 0000000..48aa859
--- /dev/null
+++ b/lib/libc/gen/getusershell.3
@@ -0,0 +1,97 @@
+.\" Copyright (c) 1985, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getusershell.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETUSERSHELL 3
+.Os BSD 4.3
+.Sh NAME
+.Nm getusershell ,
+.Nm setusershell ,
+.Nm endusershell
+.Nd get legal user shells
+.Sh SYNOPSIS
+.Ft char *
+.Fn getusershell void
+.Ft void
+.Fn setusershell void
+.Ft void
+.Fn endusershell void
+.Sh DESCRIPTION
+The
+.Fn getusershell
+function
+returns a pointer to a legal user shell as defined by the
+system manager in the file 
+.Pa /etc/shells .
+If 
+.Pa /etc/shells
+is unreadable or does not exist,
+.Fn getusershell
+behaves as if
+.Pa /bin/sh
+and
+.Pa /bin/csh
+were listed in the file.
+.Pp
+The
+.Fn getusershell
+function
+reads the next
+line (opening the file if necessary);
+.Fn setusershell
+rewinds the file;
+.Fn endusershell
+closes it.
+.Sh FILES
+.Bl -tag -width /etc/shells -compact
+.It Pa /etc/shells
+.El
+.Sh DIAGNOSTICS
+The routine
+.Fn getusershell
+returns a null pointer (0) on
+.Dv EOF .
+.Sh SEE ALSO
+.Xr shells 5
+.Sh HISTORY
+The
+.Fn getusershell
+function appeared in 
+.Bx 4.3 .
+.Sh BUGS
+The
+.Fn getusershell
+function leaves its result in an internal static object and returns
+a pointer to that object. Subsequent calls to
+.Fn getusershell
+will modify the same object.
diff --git a/lib/libc/gen/getusershell.c b/lib/libc/gen/getusershell.c
new file mode 100644
index 0000000..408f9f3
--- /dev/null
+++ b/lib/libc/gen/getusershell.c
@@ -0,0 +1,137 @@
+/*
+ * Copyright (c) 1985, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getusershell.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <paths.h>
+
+/*
+ * Local shells should NOT be added here.  They should be added in
+ * /etc/shells.
+ */
+
+static char *okshells[] = { _PATH_BSHELL, _PATH_CSHELL, NULL };
+static char **curshell, **shells, *strings;
+static char **initshells __P((void));
+
+/*
+ * Get a list of shells from _PATH_SHELLS, if it exists.
+ */
+char *
+getusershell()
+{
+	char *ret;
+
+	if (curshell == NULL)
+		curshell = initshells();
+	ret = *curshell;
+	if (ret != NULL)
+		curshell++;
+	return (ret);
+}
+
+void
+endusershell()
+{
+
+	if (shells != NULL)
+		free(shells);
+	shells = NULL;
+	if (strings != NULL)
+		free(strings);
+	strings = NULL;
+	curshell = NULL;
+}
+
+void
+setusershell()
+{
+
+	curshell = initshells();
+}
+
+static char **
+initshells()
+{
+	register char **sp, *cp;
+	register FILE *fp;
+	struct stat statb;
+
+	if (shells != NULL)
+		free(shells);
+	shells = NULL;
+	if (strings != NULL)
+		free(strings);
+	strings = NULL;
+	if ((fp = fopen(_PATH_SHELLS, "r")) == NULL)
+		return (okshells);
+	if (fstat(fileno(fp), &statb) == -1) {
+		(void)fclose(fp);
+		return (okshells);
+	}
+	if ((strings = malloc((u_int)statb.st_size)) == NULL) {
+		(void)fclose(fp);
+		return (okshells);
+	}
+	shells = calloc((unsigned)statb.st_size / 3, sizeof (char *));
+	if (shells == NULL) {
+		(void)fclose(fp);
+		free(strings);
+		strings = NULL;
+		return (okshells);
+	}
+	sp = shells;
+	cp = strings;
+	while (fgets(cp, MAXPATHLEN + 1, fp) != NULL) {
+		while (*cp != '#' && *cp != '/' && *cp != '\0')
+			cp++;
+		if (*cp == '#' || *cp == '\0')
+			continue;
+		*sp++ = cp;
+		while (!isspace(*cp) && *cp != '#' && *cp != '\0')
+			cp++;
+		*cp++ = '\0';
+	}
+	*sp = NULL;
+	(void)fclose(fp);
+	return (shells);
+}
diff --git a/lib/libc/gen/getvfsent.3 b/lib/libc/gen/getvfsent.3
new file mode 100644
index 0000000..a8151b0
--- /dev/null
+++ b/lib/libc/gen/getvfsent.3
@@ -0,0 +1,226 @@
+.\"	$Id$
+.\"	Written by Garrett A. Wollman, September 1994.
+.\"	This manual page is in the public domain.
+.\"
+.Dd September 24, 1994
+.Dt GETVFSBYNAME 3
+.Os
+.Sh NAME
+.Nm getvfsbyname ,
+.Nm getvfsbytype ,
+.Nm getvfsent ,
+.Nm setvfsent ,
+.Nm endvfsent ,
+.Nm vfsisloadable ,
+.Nm vfsload
+.Nd manage virtual filesystem modules
+.Sh SYNOPSIS
+.Fd #include <sys/mount.h>
+.Ft struct vfsconf *
+.Fn getvfsbyname "const char *name"
+.Ft struct vfsconf *
+.Fn getvfsbytype "int type"
+.Ft struct vfsconf *
+.Fn getvfsent "void"
+.Ft void
+.Fn setvfsent "int cachelist"
+.Ft void
+.Fn endvfsent "void"
+.Ft int
+.Fn vfsisloadable "const char *name"
+.Ft int
+.Fn vfsload "const char *name"
+.Sh DESCRIPTION
+The
+.Fn getvfsbyname ,
+.Fn getvfsbytype ,
+and
+.Fn getvfsent
+functions provide convenient access to a list of installed virtual
+filesystem modules managed by the kernel.
+.Fn getvfsbyname
+and
+.Fn getvfsbytype
+provide direct access to a single filesystem's information;
+.Fn getvfsent
+steps through the list of filesystems one at a time.  All three
+functions return a null pointer when no data is available.  The fields
+in a
+.Dq Li struct vfsconf
+are as follows:
+.Pp
+.Bl -tag -compact -width vfc_refcount
+.It vfc_name
+the name of the filesystem
+.It vfc_index
+the filesystem type number assigned by the kernel and used in calls to
+.Xr mount 2
+.It vfc_refcount
+the number of references to this filesystem
+(usually the number of mounts, but one greater for filesystems which
+cannot be unloaded or which are statically linked into the kernel)
+.It vfc_flags
+flag bits, of which none are currently defined
+.El
+.Pp
+The
+.Fn setvfsent
+and
+.Fn endvfsent
+functions are used to control caching of the filesystem list, which is
+obtained in toto from the kernel via
+.Xr sysctl 3 .
+If the
+.Fa cachelist
+parameter to
+.Fn setvfsent
+is non-zero, the list will be retrieved only once, upon the first call
+to one of the retrieval functions, until
+.Fn endvfsent
+is called to clear the cache.  In general,
+.Fn setvfsent 1
+should be called by programs using the
+.Fn getvfsent
+function, and
+.Fn setvfsent 0
+(which is also the default state)
+should be called by programs using the
+.Fn vfsload
+function.
+.Pp
+The
+.Fn vfsisloadable
+function returns a non-zero value if a later call to
+.Fn vfsload name
+is likely to succeed.  We say ``likely'' because the conditions
+checked by
+.Fn vfsisloadable
+are only a small subset of the conditions necessary for
+.Fn vfsload
+to succeed.  In particular,
+.Fn vfsisloadable
+checks that
+.Pa /dev/lkm
+is present and can be opened for writing, and that
+.Pa Ns Fa name Ns _mod.o
+can be found in one of the directories designated for LKMs.
+.Pp
+The
+.Fn vfsload
+function attempts to load a kernel module implementing filesystem
+.Fa name .
+It returns zero if the filesystem module was successfully located and
+loaded, or non-zero otherwise.  It should only be called in the
+following circumstances:
+.Bl -enum
+.It
+.Fn getvfsbyname name
+has been called and returned a null pointer.
+.It
+.Fn vfsisloadable name
+has been called and returned a non-zero value.
+.It
+sufficient temporary file space is available 
+.Em and writable
+in one of
+.No Ns \&${ Ns Ev TMPDIR Ns \&} ,
+.Pa /var/tmp ,
+or
+.Pa /tmp .
+.El
+.Pp
+Here is an example, taken from the source to
+.Xr mount_cd9660 8 :
+.Bd -literal -offset indent
+
+struct vfsconf *vfc;
+
+/* setup code here */
+
+vfc = getvfsbyname("cd9660");
+if(!vfc && vfsisloadable("cd9660")) {
+	if(vfsload("cd9660"))
+		err(1, "vfsload(cd9660)");
+	endvfsent();	/* flush cache */
+	vfc = getvfsbyname("cd9660");
+}
+
+mount(vfc ? vfc->vfc_index : MOUNT_CD9660, /* more arguments */
+
+.Ed
+The odd conditional in the call to
+.Xr mount 2
+is present for compatibility with old, non-LKM cognizant kernels, and
+will be removed (along with all vestiges of
+.Dv MOUNT_* )
+in a future release.
+.Sh RETURN VALUES
+The
+.Fn getvfsbyname ,
+.Fn getvfsbytype ,
+and
+.Fn getvfsent
+routines all return a pointer to the same static data structure when
+they succeed, and return a null pointer when they fail.  On failure,
+.Va errno
+may be set to one of the values documented for
+.Xr sysctl 3
+or
+.Xr malloc 3 ,
+if a failure of that function was the cause; otherwise
+.Va errno
+will be unmodified.
+.Pp
+The
+.Fn vfsload
+function returns a non-zero value on failure, or zero on success.  If
+.Fn vfsload
+fails,
+.Va errno
+may be set to one of the values documented for
+.Xr fork 2 ,
+.Xr waitpid 3 ,
+.Xr chdir 2 ,
+or
+.Xr execlp 3 ,
+or the return status of the
+.Xr modload 8
+program, which is not currently particularly useful but eventually
+will be.  In addition, if
+.Xr modload 8
+exits on a signal,
+.Fn vfsload
+will fail and set
+.Va errno
+to
+.Er EINVAL .
+.Sh ENVIRONMENT
+.Bl -tag -compact -width TMPDIRx
+.It Ev TMPDIR
+location for temporary file created by
+.Xr modload 8
+on behalf of
+.Fn vfsload .
+.It Ev LKMDIR
+alternate directory for
+.Fn vfsisloadable
+and
+.Fn vfsload
+to search for loadable modules.
+.Sh SEE ALSO
+.Xr modload 8 ,
+.Xr mount 2 ,
+.Xr mount 8
+.Sh BUGS
+The return value of the
+.Xr modload 8
+command isn't particularly useful when interpreted as an
+.Va errno
+value (or anything else, for that matter).
+.Sh AUTHOR
+The loadable filesystem support was written by Garrett A. Wollman,
+based on generic loadable kernel module support by Terry Lambert.
+.Sh HISTORY
+The
+.Fn getvfsbyname
+family of functions first appeared in FreeBSD 2.0.
diff --git a/lib/libc/gen/getvfsent.c b/lib/libc/gen/getvfsent.c
new file mode 100644
index 0000000..63fb1da
--- /dev/null
+++ b/lib/libc/gen/getvfsent.c
@@ -0,0 +1,248 @@
+/*
+ * getvfsent.c - get a listing of installed filesystems
+ * Written September 1994 by Garrett A. Wollman
+ * This file is in the public domain.
+ */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/mount.h>
+#include <sys/sysctl.h>
+#include <unistd.h>
+#include <sys/file.h>
+#include <sys/wait.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <paths.h>
+
+static struct vfsconf *_vfslist = 0;
+static struct vfsconf _vfsconf;
+static size_t _vfslistlen = 0;
+static int _vfs_keeplist = 0;
+static int _vfs_index = 0;
+
+static int
+initvfs(void)
+{
+	int mib[2] = { CTL_FS, FS_VFSCONF };
+	size_t size = 0;
+	int rv;
+
+	rv = sysctl(mib, 2, (void *)0, &size, (void *)0, (size_t)0);
+	if(rv < 0)
+		return 0;
+
+	if(_vfslist)
+		free(_vfslist);
+	_vfslist = malloc(size);
+	if(!_vfslist)
+		return 0;
+
+	rv = sysctl(mib, 2, _vfslist, &size, (void *)0, (size_t)0);
+	if(rv < 0) {
+		free(_vfslist);
+		_vfslist = 0;
+		return 0;
+	}
+
+	_vfslistlen = size / sizeof _vfslist[0];
+	return 1;
+}
+
+struct vfsconf *
+getvfsent(void)
+{
+	if(!_vfslist && !initvfs()) {
+		return 0;
+	}
+
+	do {
+		if(_vfs_index > _vfslistlen) {
+			return 0;
+		}
+
+		_vfsconf = _vfslist[_vfs_index++];
+	} while(!_vfsconf.vfc_vfsops);
+
+	if(!_vfs_keeplist) {
+		free(_vfslist);
+		_vfslist = 0;
+	}
+	return &_vfsconf;
+}
+
+struct vfsconf *
+getvfsbyname(const char *name)
+{
+	int i;
+
+	if(!_vfslist && !initvfs()) {
+		return 0;
+	}
+
+	for(i = 0; i < _vfslistlen; i++) {
+		if( ! strcmp(_vfslist[i].vfc_name, name) )
+			break;
+	}
+
+	if(i < _vfslistlen) {
+		_vfsconf = _vfslist[i];
+	}
+
+	if(!_vfs_keeplist) {
+		free(_vfslist);
+		_vfslist = 0;
+	}
+
+	if(i < _vfslistlen) {
+		return &_vfsconf;
+	} else {
+		return 0;
+	}
+}
+
+struct vfsconf *
+getvfsbytype(int type)
+{
+	int i;
+
+	if(!_vfslist && !initvfs()) {
+		return 0;
+	}
+
+	for(i = 0; i < _vfslistlen; i++) {
+		if(_vfslist[i].vfc_index == type)
+			break;
+	}
+
+	if(i < _vfslistlen) {
+		_vfsconf = _vfslist[i];
+	}
+
+	if(!_vfs_keeplist) {
+		free(_vfslist);
+		_vfslist = 0;
+	}
+
+	if(i < _vfslistlen) {
+		return &_vfsconf;
+	} else {
+		return 0;
+	}
+}
+
+void
+setvfsent(int keep)
+{
+	if(_vfslist && !keep) {
+		free(_vfslist);
+		_vfslist = 0;
+	}
+
+	_vfs_keeplist = keep;
+	_vfs_index = 0;
+}
+
+void
+endvfsent(void)
+{
+	if(_vfslist) {
+		free(_vfslist);
+		_vfslist = 0;
+	}
+
+	_vfs_index = 0;
+}
+
+static const char *vfs_lkmdirs[] = {
+	"/lkm",
+	"/usr/lkm",
+	0,
+	0
+};
+#define NLKMDIRS ((sizeof vfs_lkmdirs) / (sizeof vfs_lkmdirs[0]))
+
+static const char *
+vfspath(const char *name)
+{
+	static char pnbuf[MAXPATHLEN];
+	char *userdir = getenv("LKMDIR");
+	int i;
+
+	if(userdir) {
+		vfs_lkmdirs[NLKMDIRS - 2] = userdir;
+	}
+
+	for(i = 0; vfs_lkmdirs[i]; i++) {
+		snprintf(pnbuf, sizeof pnbuf, "%s/%s_mod.o", vfs_lkmdirs[i], name);
+		if( ! access(pnbuf, R_OK) )
+			return pnbuf;
+	}
+
+	return 0;
+}
+
+int
+vfsisloadable(const char *name)
+{
+	int fd;
+
+	fd = open("/dev/lkm", O_RDWR, 0);
+	if(fd < 0) {
+		return 0;
+	}
+	close(fd);
+
+	return !!vfspath(name);
+}
+
+int
+vfsload(const char *name)
+{
+	const char *path = vfspath(name);
+	char name_mod[sizeof("_mod") + strlen(name)];
+	pid_t pid;
+	int status;
+
+	if(!path) {
+		errno = ENOENT;
+		return -1;
+	}
+
+	pid = fork();
+	if(pid < 0)
+		return -1;
+
+	if(pid > 0) {
+		waitpid(pid, &status, 0);
+		if(WIFEXITED(status)) {
+			errno = WEXITSTATUS(status);
+			return errno ? -1 : 0;
+		}
+		errno = EINVAL;	/* not enough errno values, >sigh< */
+		return -1;
+	}
+
+	status = -1;
+	if(getenv("TMPDIR")) {
+		status = chdir(getenv("TMPDIR"));
+	}
+	if(status) {
+		status = chdir(_PATH_VARTMP);
+	}
+	if(status) {
+		status = chdir(_PATH_TMP);
+	}
+	if(status) {
+		exit(status ? errno : 0);
+	}
+
+	snprintf(name_mod, sizeof name_mod, "%s%s", name, "_mod");
+	status = execlp("modload", "modload", "-e", name_mod, "-o", name_mod,
+			"-u", "-q", path, (const char *)0);
+
+	exit(status ? errno : 0);
+}
+
diff --git a/lib/libc/gen/glob.3 b/lib/libc/gen/glob.3
new file mode 100644
index 0000000..f28bc2a
--- /dev/null
+++ b/lib/libc/gen/glob.3
@@ -0,0 +1,444 @@
+.\" Copyright (c) 1989, 1991, 1993, 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Guido van Rossum.
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)glob.3	8.3 (Berkeley) 4/16/94
+.\"
+.Dd April 16, 1994
+.Dt GLOB 3
+.Os
+.Sh NAME
+.Nm glob ,
+.Nm globfree
+.Nd generate pathnames matching a pattern
+.Sh SYNOPSIS
+.Fd #include <glob.h>
+.Ft int
+.Fn glob "const char *pattern" "int flags" "const int (*errfunc)(const char *, int)" "glob_t *pglob"
+.Ft void 
+.Fn globfree "glob_t *pglob"
+.Sh DESCRIPTION
+The
+.Fn glob
+function
+is a pathname generator that implements the rules for file name pattern
+matching used by the shell.
+.Pp
+The include file
+.Pa glob.h
+defines the structure type
+.Fa glob_t ,
+which contains at least the following fields:
+.Bd -literal
+typedef struct {
+	int gl_pathc;		/* count of total paths so far */
+	int gl_matchc;		/* count of paths matching pattern */
+	int gl_offs;		/* reserved at beginning of gl_pathv */
+	int gl_flags;		/* returned flags */
+	char **gl_pathv;	/* list of paths matching pattern */
+} glob_t;
+.Ed
+.Pp
+The argument
+.Fa pattern
+is a pointer to a pathname pattern to be expanded.
+The
+.Fn glob
+argument
+matches all accessible pathnames against the pattern and creates
+a list of the pathnames that match.
+In order to have access to a pathname,
+.Fn glob
+requires search permission on every component of a path except the last
+and read permission on each directory of any filename component of
+.Fa pattern
+that contains any of the special characters
+.Ql * ,
+.Ql ?
+or
+.Ql [ .
+.Pp
+The
+.Fn glob
+argument
+stores the number of matched pathnames into the
+.Fa gl_pathc
+field, and a pointer to a list of pointers to pathnames into the
+.Fa gl_pathv
+field.
+The first pointer after the last pathname is
+.Dv NULL . 
+If the pattern does not match any pathnames, the returned number of
+matched paths is set to zero.
+.Pp
+It is the caller's responsibility to create the structure pointed to by
+.Fa pglob .
+The
+.Fn glob
+function allocates other space as needed, including the memory pointed
+to by
+.Fa gl_pathv .
+.Pp
+The argument
+.Fa flags
+is used to modify the behavior of
+.Fn glob .
+The value of
+.Fa flags
+is the bitwise inclusive
+.Tn OR
+of any of the following
+values defined in
+.Pa glob.h :
+.Bl -tag -width GLOB_ALTDIRFUNC
+.It Dv GLOB_APPEND
+Append pathnames generated to the ones from a previous call (or calls)
+to
+.Fn glob .
+The value of
+.Fa gl_pathc
+will be the total matches found by this call and the previous call(s).
+The pathnames are appended to, not merged with the pathnames returned by
+the previous call(s).
+Between calls, the caller must not change the setting of the
+.Dv GLOB_DOOFFS
+flag, nor change the value of
+.Fa gl_offs
+when
+.Dv GLOB_DOOFFS
+is set, nor (obviously) call
+.Fn globfree
+for
+.Fa pglob .
+.It Dv GLOB_DOOFFS
+Make use of the
+.Fa gl_offs
+field.
+If this flag is set,
+.Fa gl_offs
+is used to specify how many
+.Dv NULL
+pointers to prepend to the beginning
+of the
+.Fa gl_pathv
+field.
+In other words,
+.Fa gl_pathv
+will point to
+.Fa gl_offs
+.Dv NULL
+pointers,
+followed by
+.Fa gl_pathc
+pathname pointers, followed by a
+.Dv NULL
+pointer.
+.It Dv GLOB_ERR
+Causes
+.Fn glob
+to return when it encounters a directory that it cannot open or read.
+Ordinarily,
+.Fn glob
+continues to find matches.
+.It Dv GLOB_MARK
+Each pathname that is a directory that matches
+.Fa pattern
+has a slash
+appended.
+.It Dv GLOB_NOCHECK
+If
+.Fa pattern
+does not match any pathname, then
+.Fn glob
+returns a list
+consisting of only
+.Fa pattern ,
+with the number of total pathnames is set to 1, and the number of matched
+pathnames set to 0.
+If
+.Dv GLOB_QUOTE
+is set, its effect is present in the pattern returned.
+.It Dv GLOB_NOSORT
+By default, the pathnames are sorted in ascending
+.Tn ASCII
+order;
+this flag prevents that sorting (speeding up
+.Fn glob ) .
+.El
+.Pp
+The following values may also be included in
+.Fa flags ,
+however, they are non-standard extensions to
+.St -p1003.2 .
+.Bl -tag -width GLOB_ALTDIRFUNC
+.It Dv GLOB_ALTDIRFUNC
+The following additional fields in the pglob structure have been
+initialized with alternate functions for glob to use to open, read,
+and close directories and to get stat information on names found
+in those directories.
+.Bd -literal
+void *(*gl_opendir)(const char * name);
+struct dirent *(*gl_readdir)(void *);
+void (*gl_closedir)(void *);
+int (*gl_lstat)(const char *name, struct stat *st);
+int (*gl_stat)(const char *name, struct stat *st);
+.Ed
+.Pp
+This extension is provided to allow programs such as
+.Xr restore 8
+to provide globbing from directories stored on tape.
+.It Dv GLOB_BRACE
+Pre-process the pattern string to expand 
+.Ql {pat,pat,...} 
+strings like 
+.Xr csh 1. The pattern 
+.Ql {}
+is left unexpanded for historical reasons
+.Xr (Csh 1 
+does the same thing to 
+ease typing
+of 
+.Xr find 1 
+patterns).
+.It Dv GLOB_MAGCHAR
+Set by the
+.Fn glob
+function if the pattern included globbing characters.
+See the description of the usage of the 
+.Fa gl_matchc
+structure member for more details.
+.It Dv GLOB_NOMAGIC
+Is the same as 
+.Dv GLOB_NOCHECK 
+but it only appends the
+.Fa pattern
+if it does not contain any of the special characters ``*'', ``?'' or ``[''.
+.Dv GLOB_NOMAGIC 
+is provided to simplify implementing the historic
+.Xr csh 1
+globbing behavior and should probably not be used anywhere else.
+.It Dv GLOB_QUOTE
+Use the backslash
+.Pq Ql \e
+character for quoting: every occurrence of
+a backslash followed by a character in the pattern is replaced by that
+character, avoiding any special interpretation of the character.
+.It Dv GLOB_TILDE
+Expand patterns that start with
+.Ql ~
+to user name home directories.
+.El
+.Pp
+If, during the search, a directory is encountered that cannot be opened
+or read and
+.Fa errfunc
+is
+.Pf non- Dv NULL , 
+.Fn glob
+calls
+.Fa (*errfunc)(path, errno) .
+This may be unintuitive: a pattern like
+.Ql */Makefile
+will try to
+.Xr stat 2
+.Ql foo/Makefile
+even if
+.Ql foo
+is not a directory, resulting in a
+call to
+.Fa errfunc .
+The error routine can suppress this action by testing for
+.Dv ENOENT
+and
+.Dv ENOTDIR ; 
+however, the
+.Dv GLOB_ERR
+flag will still cause an immediate
+return when this happens.
+.Pp
+If
+.Fa errfunc
+returns non-zero,
+.Fn glob
+stops the scan and returns
+.Dv GLOB_ABEND
+after setting
+.Fa gl_pathc
+and
+.Fa gl_pathv
+to reflect any paths already matched.
+This also happens if an error is encountered and
+.Dv GLOB_ERR
+is set in
+.Fa flags ,
+regardless of the return value of
+.Fa errfunc ,
+if called.
+If
+.Dv GLOB_ERR
+is not set and either
+.Fa errfunc
+is
+.Dv NULL
+or
+.Fa errfunc
+returns zero, the error is ignored.
+.Pp
+The
+.Fn globfree
+function frees any space associated with
+.Fa pglob
+from a previous call(s) to
+.Fn glob .
+.Sh RETURN VALUES
+On successful completion,
+.Fn glob
+returns zero.
+In addition the fields of
+.Fa pglob
+contain the values described below:
+.Bl -tag -width GLOB_NOCHECK
+.It Fa gl_pathc
+contains the total number of matched pathnames so far.
+This includes other matches from previous invocations of 
+.Fn glob
+if 
+.Dv GLOB_APPEND
+was specified.
+.It Fa gl_matchc
+contains the number of matched pathnames in the current invocation of
+.Fn glob .
+.It Fa gl_flags
+contains a copy of the 
+.Fa flags
+parameter with the bit
+.Dv GLOB_MAGCHAR
+set if
+.Fa pattern
+contained any of the special characters ``*'', ``?'' or ``['', cleared
+if not.
+.It Fa gl_pathv
+contains a pointer to a
+.Dv NULL Ns -terminated 
+list of matched pathnames.
+However, if
+.Fa gl_pathc
+is zero, the contents of
+.Fa gl_pathv
+are undefined.
+.El
+.Pp
+If
+.Fn glob
+terminates due to an error, it sets errno and returns one of the
+following non-zero constants, which are defined in the include
+file
+.Aq Pa glob.h :
+.Bl -tag -width GLOB_NOCHECK
+.It Dv GLOB_NOSPACE
+An attempt to allocate memory failed.
+.It Dv GLOB_ABEND
+The scan was stopped because an error was encountered and either
+.Dv GLOB_ERR
+was set or
+.Fa (*errfunc)()
+returned non-zero.
+.El
+.Pp
+The arguments
+.Fa pglob\->gl_pathc
+and
+.Fa pglob\->gl_pathv
+are still set as specified above.
+.Sh EXAMPLE
+A rough equivalent of
+.Ql "ls -l *.c *.h"
+can be obtained with the
+following code:
+.Bd -literal -offset indent
+glob_t g;
+
+g.gl_offs = 2;
+glob("*.c", GLOB_DOOFFS, NULL, &g);
+glob("*.h", GLOB_DOOFFS | GLOB_APPEND, NULL, &g);
+g.gl_pathv[0] = "ls";
+g.gl_pathv[1] = "-l";
+execvp("ls", g.gl_pathv);
+.Ed
+.Sh SEE ALSO
+.Xr sh 1 ,
+.Xr fnmatch 3 ,
+.Xr regexp 3
+.Sh STANDARDS
+The
+.Fn glob
+function is expected to be
+.St -p1003.2
+compatible with the exception
+that the flags
+.Dv GLOB_ALTDIRFUNC,
+.Dv GLOB_BRACE
+.Dv GLOB_MAGCHAR,
+.Dv GLOB_NOMAGIC,
+.Dv GLOB_QUOTE,
+and
+.Dv GLOB_TILDE,
+and the fields 
+.Fa gl_matchc
+and 
+.Fa gl_flags
+should not be used by applications striving for strict
+.Tn POSIX
+conformance.
+.Sh HISTORY
+The
+.Fn glob
+and
+.Fn globfree
+functions first appeared in 4.4BSD.
+.Sh BUGS
+Patterns longer than
+.Dv MAXPATHLEN
+may cause unchecked errors.
+.Pp
+The
+.Fn glob
+argument
+may fail and set errno for any of the errors specified for the
+library routines
+.Xr stat 2 ,
+.Xr closedir 3 ,
+.Xr opendir 3 ,
+.Xr readdir 3 ,
+.Xr malloc 3 ,
+and
+.Xr free 3 .
diff --git a/lib/libc/gen/glob.c b/lib/libc/gen/glob.c
new file mode 100644
index 0000000..2105f2a
--- /dev/null
+++ b/lib/libc/gen/glob.c
@@ -0,0 +1,846 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Guido van Rossum.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)glob.c	8.3 (Berkeley) 10/13/93";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * glob(3) -- a superset of the one defined in POSIX 1003.2.
+ *
+ * The [!...] convention to negate a range is supported (SysV, Posix, ksh).
+ *
+ * Optional extra services, controlled by flags not defined by POSIX:
+ *
+ * GLOB_QUOTE:
+ *	Escaping convention: \ inhibits any special meaning the following
+ *	character might have (except \ at end of string is retained).
+ * GLOB_MAGCHAR:
+ *	Set in gl_flags if pattern contained a globbing character.
+ * GLOB_NOMAGIC:
+ *	Same as GLOB_NOCHECK, but it will only append pattern if it did
+ *	not contain any magic characters.  [Used in csh style globbing]
+ * GLOB_ALTDIRFUNC:
+ *	Use alternately specified directory access functions.
+ * GLOB_TILDE:
+ *	expand ~user/foo to the /home/dir/of/user/foo
+ * GLOB_BRACE:
+ *	expand {1,2}{a,b} to 1a 1b 2a 2b
+ * gl_matchc:
+ *	Number of matches in the current invocation of glob.
+ */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <ctype.h>
+#include <dirent.h>
+#include <errno.h>
+#include <glob.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define	DOLLAR		'$'
+#define	DOT		'.'
+#define	EOS		'\0'
+#define	LBRACKET	'['
+#define	NOT		'!'
+#define	QUESTION	'?'
+#define	QUOTE		'\\'
+#define	RANGE		'-'
+#define	RBRACKET	']'
+#define	SEP		'/'
+#define	STAR		'*'
+#define	TILDE		'~'
+#define	UNDERSCORE	'_'
+#define	LBRACE		'{'
+#define	RBRACE		'}'
+#define	SLASH		'/'
+#define	COMMA		','
+
+#ifndef DEBUG
+
+#define	M_QUOTE		0x8000
+#define	M_PROTECT	0x4000
+#define	M_MASK		0xffff
+#define	M_ASCII		0x00ff
+
+typedef u_short Char;
+
+#else
+
+#define	M_QUOTE		0x80
+#define	M_PROTECT	0x40
+#define	M_MASK		0xff
+#define	M_ASCII		0x7f
+
+typedef char Char;
+
+#endif
+
+
+#define	CHAR(c)		((Char)((c)&M_ASCII))
+#define	META(c)		((Char)((c)|M_QUOTE))
+#define	M_ALL		META('*')
+#define	M_END		META(']')
+#define	M_NOT		META('!')
+#define	M_ONE		META('?')
+#define	M_RNG		META('-')
+#define	M_SET		META('[')
+#define	ismeta(c)	(((c)&M_QUOTE) != 0)
+
+
+static int	 compare __P((const void *, const void *));
+static void	 g_Ctoc __P((const Char *, char *));
+static int	 g_lstat __P((Char *, struct stat *, glob_t *));
+static DIR	*g_opendir __P((Char *, glob_t *));
+static Char	*g_strchr __P((Char *, int));
+#ifdef notdef
+static Char	*g_strcat __P((Char *, const Char *));
+#endif
+static int	 g_stat __P((Char *, struct stat *, glob_t *));
+static int	 glob0 __P((const Char *, glob_t *));
+static int	 glob1 __P((Char *, glob_t *));
+static int	 glob2 __P((Char *, Char *, Char *, glob_t *));
+static int	 glob3 __P((Char *, Char *, Char *, Char *, glob_t *));
+static int	 globextend __P((const Char *, glob_t *));
+static const Char *	 globtilde __P((const Char *, Char *, glob_t *));
+static int	 globexp1 __P((const Char *, glob_t *));
+static int	 globexp2 __P((const Char *, const Char *, glob_t *, int *));
+static int	 match __P((Char *, Char *, Char *));
+#ifdef DEBUG
+static void	 qprintf __P((const char *, Char *));
+#endif
+
+int
+glob(pattern, flags, errfunc, pglob)
+	const char *pattern;
+	int flags, (*errfunc) __P((const char *, int));
+	glob_t *pglob;
+{
+	const u_char *patnext;
+	int c;
+	Char *bufnext, *bufend, patbuf[MAXPATHLEN+1];
+
+	patnext = (u_char *) pattern;
+	if (!(flags & GLOB_APPEND)) {
+		pglob->gl_pathc = 0;
+		pglob->gl_pathv = NULL;
+		if (!(flags & GLOB_DOOFFS))
+			pglob->gl_offs = 0;
+	}
+	pglob->gl_flags = flags & ~GLOB_MAGCHAR;
+	pglob->gl_errfunc = errfunc;
+	pglob->gl_matchc = 0;
+
+	bufnext = patbuf;
+	bufend = bufnext + MAXPATHLEN;
+	if (flags & GLOB_QUOTE) {
+		/* Protect the quoted characters. */
+		while (bufnext < bufend && (c = *patnext++) != EOS)
+			if (c == QUOTE) {
+				if ((c = *patnext++) == EOS) {
+					c = QUOTE;
+					--patnext;
+				}
+				*bufnext++ = c | M_PROTECT;
+			}
+			else
+				*bufnext++ = c;
+	}
+	else
+	    while (bufnext < bufend && (c = *patnext++) != EOS)
+		    *bufnext++ = c;
+	*bufnext = EOS;
+
+	if (flags & GLOB_BRACE)
+	    return globexp1(patbuf, pglob);
+	else
+	    return glob0(patbuf, pglob);
+}
+
+/*
+ * Expand recursively a glob {} pattern. When there is no more expansion
+ * invoke the standard globbing routine to glob the rest of the magic
+ * characters
+ */
+static int globexp1(pattern, pglob)
+	const Char *pattern;
+	glob_t *pglob;
+{
+	const Char* ptr = pattern;
+	int rv;
+
+	/* Protect a single {}, for find(1), like csh */
+	if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS)
+		return glob0(pattern, pglob);
+
+	while ((ptr = (const Char *) g_strchr((Char *) ptr, LBRACE)) != NULL)
+		if (!globexp2(ptr, pattern, pglob, &rv))
+			return rv;
+
+	return glob0(pattern, pglob);
+}
+
+
+/*
+ * Recursive brace globbing helper. Tries to expand a single brace.
+ * If it succeeds then it invokes globexp1 with the new pattern.
+ * If it fails then it tries to glob the rest of the pattern and returns.
+ */
+static int globexp2(ptr, pattern, pglob, rv)
+	const Char *ptr, *pattern;
+	glob_t *pglob;
+	int *rv;
+{
+	int     i;
+	Char   *lm, *ls;
+	const Char *pe, *pm, *pl;
+	Char    patbuf[MAXPATHLEN + 1];
+
+	/* copy part up to the brace */
+	for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++)
+		continue;
+	ls = lm;
+
+	/* Find the balanced brace */
+	for (i = 0, pe = ++ptr; *pe; pe++)
+		if (*pe == LBRACKET) {
+			/* Ignore everything between [] */
+			for (pm = pe++; *pe != RBRACKET && *pe != EOS; pe++)
+				continue;
+			if (*pe == EOS) {
+				/*
+				 * We could not find a matching RBRACKET.
+				 * Ignore and just look for RBRACE
+				 */
+				pe = pm;
+			}
+		}
+		else if (*pe == LBRACE)
+			i++;
+		else if (*pe == RBRACE) {
+			if (i == 0)
+				break;
+			i--;
+		}
+
+	/* Non matching braces; just glob the pattern */
+	if (i != 0 || *pe == EOS) {
+		*rv = glob0(patbuf, pglob);
+		return 0;
+	}
+
+	for (i = 0, pl = pm = ptr; pm <= pe; pm++)
+		switch (*pm) {
+		case LBRACKET:
+			/* Ignore everything between [] */
+			for (pl = pm++; *pm != RBRACKET && *pm != EOS; pm++)
+				continue;
+			if (*pm == EOS) {
+				/*
+				 * We could not find a matching RBRACKET.
+				 * Ignore and just look for RBRACE
+				 */
+				pm = pl;
+			}
+			break;
+
+		case LBRACE:
+			i++;
+			break;
+
+		case RBRACE:
+			if (i) {
+			    i--;
+			    break;
+			}
+			/* FALLTHROUGH */
+		case COMMA:
+			if (i && *pm == COMMA)
+				break;
+			else {
+				/* Append the current string */
+				for (lm = ls; (pl < pm); *lm++ = *pl++)
+					continue;
+				/*
+				 * Append the rest of the pattern after the
+				 * closing brace
+				 */
+				for (pl = pe + 1; (*lm++ = *pl++) != EOS;)
+					continue;
+
+				/* Expand the current pattern */
+#ifdef DEBUG
+				qprintf("globexp2:", patbuf);
+#endif
+				*rv = globexp1(patbuf, pglob);
+
+				/* move after the comma, to the next string */
+				pl = pm + 1;
+			}
+			break;
+
+		default:
+			break;
+		}
+	*rv = 0;
+	return 0;
+}
+
+
+
+/*
+ * expand tilde from the passwd file.
+ */
+static const Char *
+globtilde(pattern, patbuf, pglob)
+	const Char *pattern;
+	Char *patbuf;
+	glob_t *pglob;
+{
+	struct passwd *pwd;
+	char *h;
+	const Char *p;
+	Char *b;
+
+	if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE))
+		return pattern;
+
+	/* Copy up to the end of the string or / */
+	for (p = pattern + 1, h = (char *) patbuf; *p && *p != SLASH;
+	     *h++ = *p++)
+		continue;
+
+	*h = EOS;
+
+	if (((char *) patbuf)[0] == EOS) {
+		/*
+		 * handle a plain ~ or ~/ by expanding $HOME
+		 * first and then trying the password file
+		 */
+		if ((h = getenv("HOME")) == NULL) {
+			if ((pwd = getpwuid(getuid())) == NULL)
+				return pattern;
+			else
+				h = pwd->pw_dir;
+		}
+	}
+	else {
+		/*
+		 * Expand a ~user
+		 */
+		if ((pwd = getpwnam((char*) patbuf)) == NULL)
+			return pattern;
+		else
+			h = pwd->pw_dir;
+	}
+
+	/* Copy the home directory */
+	for (b = patbuf; *h; *b++ = *h++)
+		continue;
+
+	/* Append the rest of the pattern */
+	while ((*b++ = *p++) != EOS)
+		continue;
+
+	return patbuf;
+}
+
+
+/*
+ * The main glob() routine: compiles the pattern (optionally processing
+ * quotes), calls glob1() to do the real pattern matching, and finally
+ * sorts the list (unless unsorted operation is requested).  Returns 0
+ * if things went well, nonzero if errors occurred.  It is not an error
+ * to find no matches.
+ */
+static int
+glob0(pattern, pglob)
+	const Char *pattern;
+	glob_t *pglob;
+{
+	const Char *qpatnext;
+	int c, err, oldpathc;
+	Char *bufnext, patbuf[MAXPATHLEN+1];
+
+	qpatnext = globtilde(pattern, patbuf, pglob);
+	oldpathc = pglob->gl_pathc;
+	bufnext = patbuf;
+
+	/* We don't need to check for buffer overflow any more. */
+	while ((c = *qpatnext++) != EOS) {
+		switch (c) {
+		case LBRACKET:
+			c = *qpatnext;
+			if (c == NOT)
+				++qpatnext;
+			if (*qpatnext == EOS ||
+			    g_strchr((Char *) qpatnext+1, RBRACKET) == NULL) {
+				*bufnext++ = LBRACKET;
+				if (c == NOT)
+					--qpatnext;
+				break;
+			}
+			*bufnext++ = M_SET;
+			if (c == NOT)
+				*bufnext++ = M_NOT;
+			c = *qpatnext++;
+			do {
+				*bufnext++ = CHAR(c);
+				if (*qpatnext == RANGE &&
+				    (c = qpatnext[1]) != RBRACKET) {
+					*bufnext++ = M_RNG;
+					*bufnext++ = CHAR(c);
+					qpatnext += 2;
+				}
+			} while ((c = *qpatnext++) != RBRACKET);
+			pglob->gl_flags |= GLOB_MAGCHAR;
+			*bufnext++ = M_END;
+			break;
+		case QUESTION:
+			pglob->gl_flags |= GLOB_MAGCHAR;
+			*bufnext++ = M_ONE;
+			break;
+		case STAR:
+			pglob->gl_flags |= GLOB_MAGCHAR;
+			/* collapse adjacent stars to one,
+			 * to avoid exponential behavior
+			 */
+			if (bufnext == patbuf || bufnext[-1] != M_ALL)
+			    *bufnext++ = M_ALL;
+			break;
+		default:
+			*bufnext++ = CHAR(c);
+			break;
+		}
+	}
+	*bufnext = EOS;
+#ifdef DEBUG
+	qprintf("glob0:", patbuf);
+#endif
+
+	if ((err = glob1(patbuf, pglob)) != 0)
+		return(err);
+
+	/*
+	 * If there was no match we are going to append the pattern
+	 * if GLOB_NOCHECK was specified or if GLOB_NOMAGIC was specified
+	 * and the pattern did not contain any magic characters
+	 * GLOB_NOMAGIC is there just for compatibility with csh.
+	 */
+	if (pglob->gl_pathc == oldpathc &&
+	    ((pglob->gl_flags & GLOB_NOCHECK) ||
+	      ((pglob->gl_flags & GLOB_NOMAGIC) &&
+	       !(pglob->gl_flags & GLOB_MAGCHAR))))
+		return(globextend(pattern, pglob));
+	else if (!(pglob->gl_flags & GLOB_NOSORT))
+		qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc,
+		    pglob->gl_pathc - oldpathc, sizeof(char *), compare);
+	return(0);
+}
+
+static int
+compare(p, q)
+	const void *p, *q;
+{
+	return(strcmp(*(char **)p, *(char **)q));
+}
+
+static int
+glob1(pattern, pglob)
+	Char *pattern;
+	glob_t *pglob;
+{
+	Char pathbuf[MAXPATHLEN+1];
+
+	/* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */
+	if (*pattern == EOS)
+		return(0);
+	return(glob2(pathbuf, pathbuf, pattern, pglob));
+}
+
+/*
+ * The functions glob2 and glob3 are mutually recursive; there is one level
+ * of recursion for each segment in the pattern that contains one or more
+ * meta characters.
+ */
+static int
+glob2(pathbuf, pathend, pattern, pglob)
+	Char *pathbuf, *pathend, *pattern;
+	glob_t *pglob;
+{
+	struct stat sb;
+	Char *p, *q;
+	int anymeta;
+
+	/*
+	 * Loop over pattern segments until end of pattern or until
+	 * segment with meta character found.
+	 */
+	for (anymeta = 0;;) {
+		if (*pattern == EOS) {		/* End of pattern? */
+			*pathend = EOS;
+			if (g_lstat(pathbuf, &sb, pglob))
+				return(0);
+
+			if (((pglob->gl_flags & GLOB_MARK) &&
+			    pathend[-1] != SEP) && (S_ISDIR(sb.st_mode)
+			    || (S_ISLNK(sb.st_mode) &&
+			    (g_stat(pathbuf, &sb, pglob) == 0) &&
+			    S_ISDIR(sb.st_mode)))) {
+				*pathend++ = SEP;
+				*pathend = EOS;
+			}
+			++pglob->gl_matchc;
+			return(globextend(pathbuf, pglob));
+		}
+
+		/* Find end of next segment, copy tentatively to pathend. */
+		q = pathend;
+		p = pattern;
+		while (*p != EOS && *p != SEP) {
+			if (ismeta(*p))
+				anymeta = 1;
+			*q++ = *p++;
+		}
+
+		if (!anymeta) {		/* No expansion, do next segment. */
+			pathend = q;
+			pattern = p;
+			while (*pattern == SEP)
+				*pathend++ = *pattern++;
+		} else			/* Need expansion, recurse. */
+			return(glob3(pathbuf, pathend, pattern, p, pglob));
+	}
+	/* NOTREACHED */
+}
+
+static int
+glob3(pathbuf, pathend, pattern, restpattern, pglob)
+	Char *pathbuf, *pathend, *pattern, *restpattern;
+	glob_t *pglob;
+{
+	register struct dirent *dp;
+	DIR *dirp;
+	int err;
+	char buf[MAXPATHLEN];
+
+	/*
+	 * The readdirfunc declaration can't be prototyped, because it is
+	 * assigned, below, to two functions which are prototyped in glob.h
+	 * and dirent.h as taking pointers to differently typed opaque
+	 * structures.
+	 */
+	struct dirent *(*readdirfunc)();
+
+	*pathend = EOS;
+	errno = 0;
+
+	if ((dirp = g_opendir(pathbuf, pglob)) == NULL) {
+		/* TODO: don't call for ENOENT or ENOTDIR? */
+		if (pglob->gl_errfunc) {
+			g_Ctoc(pathbuf, buf);
+			if (pglob->gl_errfunc(buf, errno) ||
+			    pglob->gl_flags & GLOB_ERR)
+				return (GLOB_ABEND);
+		}
+		return(0);
+	}
+
+	err = 0;
+
+	/* Search directory for matching names. */
+	if (pglob->gl_flags & GLOB_ALTDIRFUNC)
+		readdirfunc = pglob->gl_readdir;
+	else
+		readdirfunc = readdir;
+	while ((dp = (*readdirfunc)(dirp))) {
+		register u_char *sc;
+		register Char *dc;
+
+		/* Initial DOT must be matched literally. */
+		if (dp->d_name[0] == DOT && *pattern != DOT)
+			continue;
+		for (sc = (u_char *) dp->d_name, dc = pathend;
+		     (*dc++ = *sc++) != EOS;)
+			continue;
+		if (!match(pathend, pattern, restpattern)) {
+			*pathend = EOS;
+			continue;
+		}
+		err = glob2(pathbuf, --dc, restpattern, pglob);
+		if (err)
+			break;
+	}
+
+	if (pglob->gl_flags & GLOB_ALTDIRFUNC)
+		(*pglob->gl_closedir)(dirp);
+	else
+		closedir(dirp);
+	return(err);
+}
+
+
+/*
+ * Extend the gl_pathv member of a glob_t structure to accomodate a new item,
+ * add the new item, and update gl_pathc.
+ *
+ * This assumes the BSD realloc, which only copies the block when its size
+ * crosses a power-of-two boundary; for v7 realloc, this would cause quadratic
+ * behavior.
+ *
+ * Return 0 if new item added, error code if memory couldn't be allocated.
+ *
+ * Invariant of the glob_t structure:
+ *	Either gl_pathc is zero and gl_pathv is NULL; or gl_pathc > 0 and
+ *	gl_pathv points to (gl_offs + gl_pathc + 1) items.
+ */
+static int
+globextend(path, pglob)
+	const Char *path;
+	glob_t *pglob;
+{
+	register char **pathv;
+	register int i;
+	u_int newsize;
+	char *copy;
+	const Char *p;
+
+	newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs);
+	pathv = pglob->gl_pathv ?
+		    realloc((char *)pglob->gl_pathv, newsize) :
+		    malloc(newsize);
+	if (pathv == NULL)
+		return(GLOB_NOSPACE);
+
+	if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) {
+		/* first time around -- clear initial gl_offs items */
+		pathv += pglob->gl_offs;
+		for (i = pglob->gl_offs; --i >= 0; )
+			*--pathv = NULL;
+	}
+	pglob->gl_pathv = pathv;
+
+	for (p = path; *p++;)
+		continue;
+	if ((copy = malloc(p - path)) != NULL) {
+		g_Ctoc(path, copy);
+		pathv[pglob->gl_offs + pglob->gl_pathc++] = copy;
+	}
+	pathv[pglob->gl_offs + pglob->gl_pathc] = NULL;
+	return(copy == NULL ? GLOB_NOSPACE : 0);
+}
+
+
+/*
+ * pattern matching function for filenames.  Each occurrence of the *
+ * pattern causes a recursion level.
+ */
+static int
+match(name, pat, patend)
+	register Char *name, *pat, *patend;
+{
+	int ok, negate_range;
+	Char c, k;
+
+	while (pat < patend) {
+		c = *pat++;
+		switch (c & M_MASK) {
+		case M_ALL:
+			if (pat == patend)
+				return(1);
+			do
+			    if (match(name, pat, patend))
+				    return(1);
+			while (*name++ != EOS);
+			return(0);
+		case M_ONE:
+			if (*name++ == EOS)
+				return(0);
+			break;
+		case M_SET:
+			ok = 0;
+			if ((k = *name++) == EOS)
+				return(0);
+			if ((negate_range = ((*pat & M_MASK) == M_NOT)) != EOS)
+				++pat;
+			while (((c = *pat++) & M_MASK) != M_END)
+				if ((*pat & M_MASK) == M_RNG) {
+					if (c <= k && k <= pat[1])
+						ok = 1;
+					pat += 2;
+				} else if (c == k)
+					ok = 1;
+			if (ok == negate_range)
+				return(0);
+			break;
+		default:
+			if (*name++ != c)
+				return(0);
+			break;
+		}
+	}
+	return(*name == EOS);
+}
+
+/* Free allocated data belonging to a glob_t structure. */
+void
+globfree(pglob)
+	glob_t *pglob;
+{
+	register int i;
+	register char **pp;
+
+	if (pglob->gl_pathv != NULL) {
+		pp = pglob->gl_pathv + pglob->gl_offs;
+		for (i = pglob->gl_pathc; i--; ++pp)
+			if (*pp)
+				free(*pp);
+		free(pglob->gl_pathv);
+	}
+}
+
+static DIR *
+g_opendir(str, pglob)
+	register Char *str;
+	glob_t *pglob;
+{
+	char buf[MAXPATHLEN];
+
+	if (!*str)
+		strcpy(buf, ".");
+	else
+		g_Ctoc(str, buf);
+
+	if (pglob->gl_flags & GLOB_ALTDIRFUNC)
+		return((*pglob->gl_opendir)(buf));
+
+	return(opendir(buf));
+}
+
+static int
+g_lstat(fn, sb, pglob)
+	register Char *fn;
+	struct stat *sb;
+	glob_t *pglob;
+{
+	char buf[MAXPATHLEN];
+
+	g_Ctoc(fn, buf);
+	if (pglob->gl_flags & GLOB_ALTDIRFUNC)
+		return((*pglob->gl_lstat)(buf, sb));
+	return(lstat(buf, sb));
+}
+
+static int
+g_stat(fn, sb, pglob)
+	register Char *fn;
+	struct stat *sb;
+	glob_t *pglob;
+{
+	char buf[MAXPATHLEN];
+
+	g_Ctoc(fn, buf);
+	if (pglob->gl_flags & GLOB_ALTDIRFUNC)
+		return((*pglob->gl_stat)(buf, sb));
+	return(stat(buf, sb));
+}
+
+static Char *
+g_strchr(str, ch)
+	Char *str;
+	int ch;
+{
+	do {
+		if (*str == ch)
+			return (str);
+	} while (*str++);
+	return (NULL);
+}
+
+#ifdef notdef
+static Char *
+g_strcat(dst, src)
+	Char *dst;
+	const Char* src;
+{
+	Char *sdst = dst;
+
+	while (*dst++)
+		continue;
+	--dst;
+	while((*dst++ = *src++) != EOS)
+	    continue;
+
+	return (sdst);
+}
+#endif
+
+static void
+g_Ctoc(str, buf)
+	register const Char *str;
+	char *buf;
+{
+	register char *dc;
+
+	for (dc = buf; (*dc++ = *str++) != EOS;)
+		continue;
+}
+
+#ifdef DEBUG
+static void
+qprintf(str, s)
+	const char *str;
+	register Char *s;
+{
+	register Char *p;
+
+	(void)printf("%s:\n", str);
+	for (p = s; *p; p++)
+		(void)printf("%c", CHAR(*p));
+	(void)printf("\n");
+	for (p = s; *p; p++)
+		(void)printf("%c", *p & M_PROTECT ? '"' : ' ');
+	(void)printf("\n");
+	for (p = s; *p; p++)
+		(void)printf("%c", ismeta(*p) ? '_' : ' ');
+	(void)printf("\n");
+}
+#endif
diff --git a/lib/libc/gen/initgroups.3 b/lib/libc/gen/initgroups.3
new file mode 100644
index 0000000..a0b1c4f
--- /dev/null
+++ b/lib/libc/gen/initgroups.3
@@ -0,0 +1,83 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)initgroups.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt INITGROUPS 3
+.Os BSD 4.2
+.Sh NAME
+.Nm initgroups
+.Nd initialize group access list
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn initgroups "const char *name" "int basegid"
+.Sh DESCRIPTION
+The
+.Fn initgroups
+function
+uses the
+.Xr getgrouplist 3
+function to calculate the group access list for the user
+specified in
+.Fa name .
+This group list is then setup for the current process using
+.Xr setgroups 2 .
+The
+.Fa basegid
+is automatically included in the groups list.
+Typically this value is given as
+the group number from the password file.
+.Sh RETURN VALUES
+The
+.Fn initgroups
+function
+returns \-1 if it was not invoked by the super-user.
+.Sh SEE ALSO
+.Xr setgroups 2 ,
+.Xr getgrouplist 3
+.Sh HISTORY
+The
+.Nm
+function appeared in 
+.Bx 4.2 .
+.Sh BUGS
+The
+.Fn getgrouplist
+function called by
+.Nm
+uses the routines based on
+.Xr getgrent 3 .
+If the invoking program uses any of these routines,
+the group structure will
+be overwritten in the call to
+.Fn initgroups .
diff --git a/lib/libc/gen/initgroups.c b/lib/libc/gen/initgroups.c
new file mode 100644
index 0000000..da64187
--- /dev/null
+++ b/lib/libc/gen/initgroups.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)initgroups.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+
+#include <stdio.h>
+#include <err.h>
+
+int
+initgroups(uname, agroup)
+	const char *uname;
+	int agroup;
+{
+	int groups[NGROUPS], ngroups;
+
+	ngroups = NGROUPS;
+	if (getgrouplist(uname, agroup, groups, &ngroups) < 0)
+		warnx("%s is in too many groups, using first %d",
+		    uname, ngroups);
+	if (setgroups(ngroups, groups) < 0) {
+		warn("setgroups");
+		return (-1);
+	}
+	return (0);
+}
diff --git a/lib/libc/gen/isatty.c b/lib/libc/gen/isatty.c
new file mode 100644
index 0000000..f6bb04b
--- /dev/null
+++ b/lib/libc/gen/isatty.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)isatty.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <termios.h>
+#include <unistd.h>
+
+int
+isatty(fd)
+	int fd;
+{
+	struct termios t;
+
+	return(tcgetattr(fd, &t) != -1);
+}
diff --git a/lib/libc/gen/isinf.3 b/lib/libc/gen/isinf.3
new file mode 100644
index 0000000..02ca3c5
--- /dev/null
+++ b/lib/libc/gen/isinf.3
@@ -0,0 +1,72 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)isinf.3	8.2 (Berkeley) 1/29/94
+.\"
+.Dd January 29, 1994
+.Dt ISINF 3
+.Os
+.Sh NAME
+.Nm isinf ,
+.Nm isnan
+.Nd test for infinity or not-a-number
+.Sh SYNOPSIS
+.Ft int 
+.Fn isinf double
+.Ft int 
+.Fn isnan double
+.Sh DESCRIPTION
+The
+.Fn isninf
+function
+returns 1 if the number is
+.Dq \\*(If ,
+otherwise 0.
+.Pp
+The
+.Fn isnan
+function
+returns 1 if the number is
+.Dq not-a-number ,
+otherwise 0.
+.Sh SEE ALSO
+.Xr math 3
+.Rs
+.%T "IEEE Standard for Binary Floating-Point Arithmetic"
+.%Q ANSI
+.%R Std 754-1985
+.Re
+.Sh BUGS
+Neither the
+.Tn VAX
+nor the Tahoe floating point have distinguished values
+for either infinity or not-a-number.
+These routines always return 0 on those architectures.
diff --git a/lib/libc/gen/jrand48.c b/lib/libc/gen/jrand48.c
new file mode 100644
index 0000000..051d5a6
--- /dev/null
+++ b/lib/libc/gen/jrand48.c
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 1993 Martin Birgmeier
+ * All rights reserved.
+ *
+ * You may redistribute unmodified or modified versions of this source
+ * code provided that the above copyright notice and this and the
+ * following conditions are retained.
+ *
+ * This software is provided ``as is'', and comes with no warranties
+ * of any kind. I shall in no event be liable for anything that happens
+ * to anyone/anything when using this software.
+ */
+
+#include "rand48.h"
+
+long
+jrand48(unsigned short xseed[3])
+{
+	_dorand48(xseed);
+	return ((long) xseed[2] << 16) + (long) xseed[1];
+}
diff --git a/lib/libc/gen/lcong48.c b/lib/libc/gen/lcong48.c
new file mode 100644
index 0000000..f13826b
--- /dev/null
+++ b/lib/libc/gen/lcong48.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 1993 Martin Birgmeier
+ * All rights reserved.
+ *
+ * You may redistribute unmodified or modified versions of this source
+ * code provided that the above copyright notice and this and the
+ * following conditions are retained.
+ *
+ * This software is provided ``as is'', and comes with no warranties
+ * of any kind. I shall in no event be liable for anything that happens
+ * to anyone/anything when using this software.
+ */
+
+#include "rand48.h"
+
+extern unsigned short _rand48_seed[3];
+extern unsigned short _rand48_mult[3];
+extern unsigned short _rand48_add;
+
+void
+lcong48(unsigned short p[7])
+{
+	_rand48_seed[0] = p[0];
+	_rand48_seed[1] = p[1];
+	_rand48_seed[2] = p[2];
+	_rand48_mult[0] = p[3];
+	_rand48_mult[1] = p[4];
+	_rand48_mult[2] = p[5];
+	_rand48_add = p[6];
+}
diff --git a/lib/libc/gen/ldexp.3 b/lib/libc/gen/ldexp.3
new file mode 100644
index 0000000..bffcacf
--- /dev/null
+++ b/lib/libc/gen/ldexp.3
@@ -0,0 +1,77 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)ldexp.3	8.2 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt LDEXP 3
+.Os
+.Sh NAME
+.Nm ldexp
+.Nd multiply floating-point number by integral power of 2
+.Sh SYNOPSIS
+.Fd #include <math.h>
+.Ft double
+.Fn ldexp "double x" "int exp"
+.Sh DESCRIPTION
+The
+.Fn ldexp
+function multiplies a floating-point number by an integral
+power of 2.
+.Sh RETURN VALUES
+The
+.Fn ldexp
+function returns the value of
+.Fa x
+times 2 raised to the power
+.Fa exp .
+.Pp
+If the resultant value would cause an overflow,
+the global variable
+.Va errno
+is set to
+.Er ERANGE
+and the value
+.Dv HUGE
+is returned.
+.Sh SEE ALSO
+.Xr frexp 3 ,
+.Xr modf 3 ,
+.Xr math 3
+.Sh STANDARDS
+The
+.Fn ldexp
+function conforms
+.St -ansiC .
diff --git a/lib/libc/gen/lrand48.c b/lib/libc/gen/lrand48.c
new file mode 100644
index 0000000..a3d0111
--- /dev/null
+++ b/lib/libc/gen/lrand48.c
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 1993 Martin Birgmeier
+ * All rights reserved.
+ *
+ * You may redistribute unmodified or modified versions of this source
+ * code provided that the above copyright notice and this and the
+ * following conditions are retained.
+ *
+ * This software is provided ``as is'', and comes with no warranties
+ * of any kind. I shall in no event be liable for anything that happens
+ * to anyone/anything when using this software.
+ */
+
+#include "rand48.h"
+
+extern unsigned short _rand48_seed[3];
+
+long
+lrand48(void)
+{
+	_dorand48(_rand48_seed);
+	return ((long) _rand48_seed[2] << 15) + ((long) _rand48_seed[1] >> 1);
+}
diff --git a/lib/libc/gen/modf.3 b/lib/libc/gen/modf.3
new file mode 100644
index 0000000..22b4c4c
--- /dev/null
+++ b/lib/libc/gen/modf.3
@@ -0,0 +1,72 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)modf.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt MODF 3
+.Os
+.Sh NAME
+.Nm modf
+.Nd extract signed integral and fractional values from floating-point number
+.Sh SYNOPSIS
+.Fd #include <math.h>
+.Ft double
+.Fn modf "double value" "double *iptr"
+.Sh DESCRIPTION
+The
+.Fn modf
+function breaks the argument
+.Fa value
+into integral and fractional parts, each of which has the
+same sign as the argument.
+It stores the integral part as a 
+.Em double
+in the object pointed to by
+.Fa iptr .
+.Sh RETURN VALUES
+The
+.Fn modf
+function returns the signed fractional part of
+.Fa value .
+.Sh SEE ALSO
+.Xr frexp 3 ,
+.Xr ldexp 3 ,
+.Xr math 3
+.Sh STANDARDS
+The
+.Fn modf
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/gen/mrand48.c b/lib/libc/gen/mrand48.c
new file mode 100644
index 0000000..b23db51
--- /dev/null
+++ b/lib/libc/gen/mrand48.c
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 1993 Martin Birgmeier
+ * All rights reserved.
+ *
+ * You may redistribute unmodified or modified versions of this source
+ * code provided that the above copyright notice and this and the
+ * following conditions are retained.
+ *
+ * This software is provided ``as is'', and comes with no warranties
+ * of any kind. I shall in no event be liable for anything that happens
+ * to anyone/anything when using this software.
+ */
+
+#include "rand48.h"
+
+extern unsigned short _rand48_seed[3];
+
+long
+mrand48(void)
+{
+	_dorand48(_rand48_seed);
+	return ((long) _rand48_seed[2] << 16) + (long) _rand48_seed[1];
+}
diff --git a/lib/libc/gen/msgctl.c b/lib/libc/gen/msgctl.c
new file mode 100644
index 0000000..7b74c51e
--- /dev/null
+++ b/lib/libc/gen/msgctl.c
@@ -0,0 +1,15 @@
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/msg.h>
+
+#if __STDC__
+int msgctl(int msqid, int cmd, struct msqid_ds *buf)
+#else
+int msgctl(msqid,cmd,buf)
+	int msqid;
+	int cmd;
+	caddr_t buf;
+#endif
+{
+	return (msgsys(0, msqid, cmd, buf));
+}
diff --git a/lib/libc/gen/msgget.c b/lib/libc/gen/msgget.c
new file mode 100644
index 0000000..3e146b0
--- /dev/null
+++ b/lib/libc/gen/msgget.c
@@ -0,0 +1,14 @@
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/msg.h>
+
+#if __STDC__
+int msgget(key_t key, int msgflg)
+#else
+int msgget(key,msgflg)
+	key_t key;
+	int msgflg;
+#endif
+{
+	return (msgsys(1, key, msgflg));
+}
diff --git a/lib/libc/gen/msgrcv.c b/lib/libc/gen/msgrcv.c
new file mode 100644
index 0000000..5c1e387
--- /dev/null
+++ b/lib/libc/gen/msgrcv.c
@@ -0,0 +1,17 @@
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/msg.h>
+
+#if __STDC__
+int msgrcv(int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg)
+#else
+int msgrcv(msqid, msgp, msgsz, msgtyp, msgflg)
+	int msqid;
+	void *msgp;
+	size_t msgsz;
+	long msgtyp;
+	int msgflg;
+#endif
+{
+	return (msgsys(3, msqid, msgp, msgsz, msgtyp, msgflg));
+}
diff --git a/lib/libc/gen/msgsnd.c b/lib/libc/gen/msgsnd.c
new file mode 100644
index 0000000..a620915
--- /dev/null
+++ b/lib/libc/gen/msgsnd.c
@@ -0,0 +1,16 @@
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/msg.h>
+
+#if __STDC__
+int msgsnd(int msqid, void *msgp, size_t msgsz, int msgflg)
+#else
+int msgsnd(msqid, msgp, msgsz, msgflg)
+	int msqid;
+	void *msgp;
+	size_t msgsz;
+	int msgflg;
+#endif
+{
+	return (msgsys(2, msqid, msgp, msgsz, msgflg));
+}
diff --git a/lib/libc/gen/nice.3 b/lib/libc/gen/nice.3
new file mode 100644
index 0000000..64a87c6
--- /dev/null
+++ b/lib/libc/gen/nice.3
@@ -0,0 +1,67 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)nice.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt NICE 3
+.Os BSD 4
+.Sh NAME
+.Nm nice
+.Nd set program scheduling priority
+.Sh SYNOPSIS
+.Fn nice "int incr"
+.Sh DESCRIPTION
+.Bf -symbolic
+This interface is obsoleted by setpriority(2).
+.Ef
+.Pp
+The
+.Fn nice
+function obtains the scheduling priority of the process
+from the system and sets it to the priority value specified in
+.Fa incr .
+The priority is a value in the range -20 to 20.
+The default priority is 0; lower priorities cause more favorable scheduling.
+Only the super-user may lower priorities.
+.Pp
+Children inherit the priority of their parent processes via
+.Xr fork 2 .
+.Sh SEE ALSO
+.Xr nice 1 ,
+.Xr setpriority 2 ,
+.Xr fork 2 ,
+.Xr renice 8
+.Sh HISTORY
+A
+.Fn nice
+syscall appeared in 
+.At v6 .
diff --git a/lib/libc/gen/nice.c b/lib/libc/gen/nice.c
new file mode 100644
index 0000000..8b37c06
--- /dev/null
+++ b/lib/libc/gen/nice.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)nice.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <unistd.h>
+
+/*
+ * Backwards compatible nice.
+ */
+int
+nice(incr)
+	int incr;
+{
+	int prio;
+	extern int errno;
+
+	errno = 0;
+	prio = getpriority(PRIO_PROCESS, 0);
+	if (prio == -1 && errno)
+		return (-1);
+	return (setpriority(PRIO_PROCESS, 0, prio + incr));
+}
diff --git a/lib/libc/gen/nlist.3 b/lib/libc/gen/nlist.3
new file mode 100644
index 0000000..11c9ee4
--- /dev/null
+++ b/lib/libc/gen/nlist.3
@@ -0,0 +1,78 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)nlist.3	8.3 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt NLIST 3
+.Os BSD 4
+.Sh NAME
+.Nm nlist
+.Nd retrieve symbol table name list from an executable file
+.Sh SYNOPSIS
+.Fd #include <nlist.h>
+.Ft int
+.Fn nlist "const char *filename" "struct nlist *nl"
+.Sh DESCRIPTION
+The
+.Fn nlist
+function
+retrieves name list entries from the symbol table of an
+executable file. (See
+.Xr a.out 5 . )
+The argument
+.Fa \&nl
+is set to reference the
+beginning of the list.
+The list is preened of binary and invalid data;
+if an entry in the
+name list is valid, the
+.Fa n_type
+and
+.Fa n_value
+for the entry are copied into the list
+referenced by
+.Fa \&nl .
+No other data is copied.
+The last entry in the list is always
+.Dv NULL .
+.Sh RETURN VALUES
+The number of invalid entries is returned if successful; otherwise,
+if the file
+.Fa filename
+does not exist or is not executable, the returned value is \-1.
+.Sh SEE ALSO
+.Xr a.out 5
+.Sh HISTORY
+A
+.Fn nlist
+function appeared in
+.At v6 .
diff --git a/lib/libc/gen/nlist.c b/lib/libc/gen/nlist.c
new file mode 100644
index 0000000..cbece18
--- /dev/null
+++ b/lib/libc/gen/nlist.c
@@ -0,0 +1,158 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)nlist.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/file.h>
+
+#include <errno.h>
+#include <a.out.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+int
+nlist(name, list)
+	const char *name;
+	struct nlist *list;
+{
+	int fd, n;
+
+	fd = open(name, O_RDONLY, 0);
+	if (fd < 0)
+		return (-1);
+	n = __fdnlist(fd, list);
+	(void)close(fd);
+	return (n);
+}
+
+#define	ISLAST(p)	(p->n_un.n_name == 0 || p->n_un.n_name[0] == 0)
+
+int
+__fdnlist(fd, list)
+	register int fd;
+	register struct nlist *list;
+{
+	register struct nlist *p, *symtab;
+	register caddr_t strtab, a_out_mmap;
+	register off_t stroff, symoff;
+	register u_long symsize;
+	register int nent;
+	struct exec * exec;
+	struct stat st;
+
+	/* check that file is at least as large as struct exec! */
+	if ((fstat(fd, &st) < 0) || (st.st_size < sizeof(struct exec)))
+		return (-1);
+
+	/* Check for files too large to mmap. */
+	if (st.st_size > SIZE_T_MAX) {
+		errno = EFBIG;
+		return (-1);
+	}
+
+	/*
+	 * Map the whole a.out file into our address space.
+	 * We then find the string table withing this area.
+	 * We do not just mmap the string table, as it probably
+	 * does not start at a page boundary - we save ourselves a
+	 * lot of nastiness by mmapping the whole file.
+	 *
+	 * This gives us an easy way to randomly access all the strings,
+	 * without making the memory allocation permanent as with
+	 * malloc/free (i.e., munmap will return it to the system).
+	 */
+	a_out_mmap = mmap(NULL, (size_t)st.st_size, PROT_READ, 0, fd, (off_t)0);
+	if (a_out_mmap == (char *)-1)
+		return (-1);
+
+	exec = (struct exec *)a_out_mmap;
+	if (N_BADMAG(*exec)) {
+		munmap(a_out_mmap, (size_t)st.st_size);
+		return (-1);
+	}
+
+	symoff = N_SYMOFF(*exec);
+	symsize = exec->a_syms;
+	stroff = symoff + symsize;
+
+	/* find the string table in our mmapped area */
+	strtab = a_out_mmap + stroff;
+	symtab = (struct nlist *)(a_out_mmap + symoff);
+
+	/*
+	 * clean out any left-over information for all valid entries.
+	 * Type and value defined to be 0 if not found; historical
+	 * versions cleared other and desc as well.  Also figure out
+	 * the largest string length so don't read any more of the
+	 * string table than we have to.
+	 *
+	 * XXX clearing anything other than n_type and n_value violates
+	 * the semantics given in the man page.
+	 */
+	nent = 0;
+	for (p = list; !ISLAST(p); ++p) {
+		p->n_type = 0;
+		p->n_other = 0;
+		p->n_desc = 0;
+		p->n_value = 0;
+		++nent;
+	}
+
+	while (symsize > 0) {
+		register int soff;
+
+		symsize-= sizeof(struct nlist);
+		soff = symtab->n_un.n_strx;
+
+
+		if (soff != 0 && (symtab->n_type & N_STAB) == 0)
+			for (p = list; !ISLAST(p); p++)
+				if (!strcmp(&strtab[soff], p->n_un.n_name)) {
+					p->n_value = symtab->n_value;
+					p->n_type = symtab->n_type;
+					p->n_desc = symtab->n_desc;
+					p->n_other = symtab->n_other;
+					if (--nent <= 0)
+						break;
+				}
+		symtab++;
+	}
+	munmap(a_out_mmap, (size_t)st.st_size);
+	return (nent);
+}
diff --git a/lib/libc/gen/nrand48.c b/lib/libc/gen/nrand48.c
new file mode 100644
index 0000000..6c54065
--- /dev/null
+++ b/lib/libc/gen/nrand48.c
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 1993 Martin Birgmeier
+ * All rights reserved.
+ *
+ * You may redistribute unmodified or modified versions of this source
+ * code provided that the above copyright notice and this and the
+ * following conditions are retained.
+ *
+ * This software is provided ``as is'', and comes with no warranties
+ * of any kind. I shall in no event be liable for anything that happens
+ * to anyone/anything when using this software.
+ */
+
+#include "rand48.h"
+
+long
+nrand48(unsigned short xseed[3])
+{
+	_dorand48(xseed);
+	return ((long) xseed[2] << 15) + ((long) xseed[1] >> 1);
+}
diff --git a/lib/libc/gen/ntp_gettime.c b/lib/libc/gen/ntp_gettime.c
new file mode 100644
index 0000000..feae846
--- /dev/null
+++ b/lib/libc/gen/ntp_gettime.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static const char rcsid[] =
+  "$Id: ntp_gettime.c,v 1.1 1994/09/18 20:29:46 wollman Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/time.h>
+#include <sys/timex.h>
+
+int
+ntp_gettime(struct ntptimeval *ntv)
+{
+	int mib[3];
+	struct ntptimeval tv;
+	size_t size = sizeof tv;
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_NTP_PLL;
+	mib[2] = NTP_PLL_GETTIME;
+	if (sysctl(mib, 3, &tv, &size, NULL, 0) == -1)
+		return TIME_ERROR;
+	if(ntv) *ntv = tv;
+	return tv.time_state;
+}
+
diff --git a/lib/libc/gen/opendir.c b/lib/libc/gen/opendir.c
new file mode 100644
index 0000000..b3c0e09
--- /dev/null
+++ b/lib/libc/gen/opendir.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)opendir.c	8.2 (Berkeley) 2/12/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+/*
+ * open a directory.
+ */
+DIR *
+opendir(name)
+	const char *name;
+{
+	register DIR *dirp;
+	register int fd;
+	int saved_errno;
+	struct stat sb;
+
+	if ((fd = open(name, O_RDONLY | O_NONBLOCK)) == -1)
+		return NULL;
+	dirp = NULL;
+	if (fstat(fd, &sb) != 0)
+		goto fail;
+	if (!S_ISDIR(sb.st_mode)) {
+		errno = ENOTDIR;
+		goto fail;
+	}
+	if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1 ||
+	    (dirp = malloc(sizeof(DIR))) == NULL)
+		goto fail;
+	/*
+	 * If CLBYTES is an exact multiple of DIRBLKSIZ, use a CLBYTES
+	 * buffer that it cluster boundary aligned.
+	 * Hopefully this can be a big win someday by allowing page trades
+	 * to user space to be done by getdirentries()
+	 */
+	if ((CLBYTES % DIRBLKSIZ) == 0) {
+		dirp->dd_buf = malloc(CLBYTES);
+		dirp->dd_len = CLBYTES;
+	} else {
+		dirp->dd_buf = malloc(DIRBLKSIZ);
+		dirp->dd_len = DIRBLKSIZ;
+	}
+	if (dirp->dd_buf == NULL)
+		goto fail;
+	dirp->dd_fd = fd;
+	dirp->dd_loc = 0;
+	dirp->dd_seek = 0;
+	/*
+	 * Set up seek point for rewinddir.
+	 */
+	dirp->dd_rewind = telldir(dirp);
+	return dirp;
+
+fail:
+	saved_errno = errno;
+	free(dirp);
+	close(fd);
+	errno = saved_errno;
+	return NULL;
+}
diff --git a/lib/libc/gen/pause.3 b/lib/libc/gen/pause.3
new file mode 100644
index 0000000..b5fd207
--- /dev/null
+++ b/lib/libc/gen/pause.3
@@ -0,0 +1,84 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)pause.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt PAUSE 3
+.Os BSD 4
+.Sh NAME
+.Nm pause
+.Nd stop until signal
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn pause void
+.Sh DESCRIPTION
+.Bf -symbolic
+Pause is made obsolete by sigpause(3).
+.Ef
+.Pp
+The
+.Fn pause
+function
+forces a process to pause until
+a signal is received from either the
+.Xr kill 2
+function
+or an interval timer.
+(See
+.Xr setitimer 2 . )
+Upon termination of a signal handler started during a
+.Fn pause ,
+the
+.Fn pause
+call will return.
+.Sh RETURN VALUES
+Always returns \-1.
+.Sh ERRORS
+The
+.Fn pause
+function
+always returns:
+.Bl -tag -width [EINTR]
+.It Bq Er EINTR
+The call was interrupted.
+.El
+.Sh SEE ALSO
+.Xr kill 2 ,
+.Xr select 2 ,
+.Xr sigpause 2
+.Sh HISTORY
+A
+.Fn pause
+syscall
+appeared in 
+.At v6 .
diff --git a/lib/libc/gen/pause.c b/lib/libc/gen/pause.c
new file mode 100644
index 0000000..9cbe467
--- /dev/null
+++ b/lib/libc/gen/pause.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)pause.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <signal.h>
+#include <unistd.h>
+
+/*
+ * Backwards compatible pause.
+ */
+int
+pause()
+{
+
+	return sigpause(sigblock(0L));
+}
diff --git a/lib/libc/gen/popen.3 b/lib/libc/gen/popen.3
new file mode 100644
index 0000000..6f89a5c
--- /dev/null
+++ b/lib/libc/gen/popen.3
@@ -0,0 +1,182 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)popen.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt POPEN 3
+.Os
+.Sh NAME
+.Nm popen ,
+.Nm pclose
+.Nd process
+.Tn I/O
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft FILE *
+.Fn popen "const char *command" "const char *type"
+.Ft int
+.Fn pclose "FILE *stream"
+.Sh DESCRIPTION
+The
+.Fn popen
+function
+.Dq opens
+a process by creating a pipe,
+forking,
+and invoking the shell.
+Since a pipe is by definition unidirectional, the
+.Fa type
+argument may specify only reading or writing, not both;
+the resulting stream is correspondingly read-only or write-only.
+.Pp
+The
+.Fa command
+argument is a pointer to a null-terminated string
+containing a shell command line.
+This command is passed to
+.Pa /bin/sh
+using the
+.Fl c
+flag; interpretation, if any, is performed by the shell.
+The
+.Fa mode
+argument is a pointer to a null-terminated string
+which must be either
+.Ql r
+for reading
+or
+.Ql w
+for writing.
+.Pp
+The return value from
+.Fn popen
+is a normal standard
+.Tn I/O
+stream in all respects
+save that it must be closed with
+.Fn pclose
+rather than
+.Fn fclose .
+Writing to such a stream
+writes to the standard input of the command;
+the command's standard output is the same as that of the process that called
+.Fn popen ,
+unless this is altered by the command itself.
+Conversely, reading from a
+.Dq popened
+stream reads the command's standard output, and
+the command's standard input is the same as that of the process that called
+.Fn popen .
+.Pp
+Note that output
+.Fn popen
+streams are fully buffered by default.
+.Pp
+The
+.Fn pclose
+function waits for the associated process to terminate
+and returns the exit status of the command
+as returned by
+.Fn wait4 .
+.Sh RETURN VALUE
+The
+.Fn popen
+function returns
+.Dv NULL
+if the
+.Xr fork 2
+or
+.Xr pipe 2
+calls fail,
+or if it cannot allocate memory.
+.Pp
+The
+.Fn pclose
+function
+returns \-1 if
+.Fa stream
+is not associated with a
+.Dq popened
+command, if
+.Fa stream
+already
+.Dq pclosed ,
+or if
+.Xr wait4
+returns an error.
+.Sh ERRORS
+The
+.Fn popen
+function does not reliably set
+.Va errno .
+.Sh SEE ALSO
+.Xr fork 2 ,
+.Xr sh 1 ,
+.Xr pipe 2 ,
+.Xr wait4 2 ,
+.Xr fflush 3 ,
+.Xr fclose 3 ,
+.Xr fopen 3 ,
+.Xr stdio 3 ,
+.Xr system 3
+.Sh BUGS
+Since the standard input of a command opened for reading
+shares its seek offset with the process that called
+.Fn popen ,
+if the original process has done a buffered read,
+the command's input position may not be as expected.
+Similarly, the output from a command opened for writing
+may become intermingled with that of the original process.
+The latter can be avoided by calling
+.Xr fflush 3
+before
+.Fn popen .
+.Pp
+Failure to execute the shell
+is indistinguishable from the shell's failure to execute command,
+or an immediate exit of the command.
+The only hint is an exit status of 127.
+.Pp
+The
+.Fn popen
+argument
+always calls
+.Xr sh ,
+never calls
+.Xr csh .
+.Sh HISTORY
+A
+.Fn popen
+and a
+.Fn pclose
+function appeared in
+.At v7 .
diff --git a/lib/libc/gen/popen.c b/lib/libc/gen/popen.c
new file mode 100644
index 0000000..0b8bda5
--- /dev/null
+++ b/lib/libc/gen/popen.c
@@ -0,0 +1,160 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software written by Ken Arnold and
+ * published in UNIX Review, Vol. 6, No. 8.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)popen.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/wait.h>
+
+#include <signal.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <paths.h>
+
+static struct pid {
+	struct pid *next;
+	FILE *fp;
+	pid_t pid;
+} *pidlist;
+
+FILE *
+popen(program, type)
+	const char *program;
+	const char *type;
+{
+	struct pid *cur;
+	FILE *iop;
+	int pdes[2], pid;
+
+	if (*type != 'r' && *type != 'w' || type[1])
+		return (NULL);
+
+	if ((cur = malloc(sizeof(struct pid))) == NULL)
+		return (NULL);
+
+	if (pipe(pdes) < 0) {
+		free(cur);
+		return (NULL);
+	}
+
+	switch (pid = vfork()) {
+	case -1:			/* Error. */
+		(void)close(pdes[0]);
+		(void)close(pdes[1]);
+		free(cur);
+		return (NULL);
+		/* NOTREACHED */
+	case 0:				/* Child. */
+		if (*type == 'r') {
+			if (pdes[1] != STDOUT_FILENO) {
+				(void)dup2(pdes[1], STDOUT_FILENO);
+				(void)close(pdes[1]);
+			}
+			(void) close(pdes[0]);
+		} else {
+			if (pdes[0] != STDIN_FILENO) {
+				(void)dup2(pdes[0], STDIN_FILENO);
+				(void)close(pdes[0]);
+			}
+			(void)close(pdes[1]);
+		}
+		execl(_PATH_BSHELL, "sh", "-c", program, NULL);
+		_exit(127);
+		/* NOTREACHED */
+	}
+
+	/* Parent; assume fdopen can't fail. */
+	if (*type == 'r') {
+		iop = fdopen(pdes[0], type);
+		(void)close(pdes[1]);
+	} else {
+		iop = fdopen(pdes[1], type);
+		(void)close(pdes[0]);
+	}
+
+	/* Link into list of file descriptors. */
+	cur->fp = iop;
+	cur->pid =  pid;
+	cur->next = pidlist;
+	pidlist = cur;
+
+	return (iop);
+}
+
+/*
+ * pclose --
+ *	Pclose returns -1 if stream is not associated with a `popened' command,
+ *	if already `pclosed', or waitpid returns an error.
+ */
+int
+pclose(iop)
+	FILE *iop;
+{
+	register struct pid *cur, *last;
+	int omask;
+	union wait pstat;
+	pid_t pid;
+
+	(void)fclose(iop);
+
+	/* Find the appropriate file pointer. */
+	for (last = NULL, cur = pidlist; cur; last = cur, cur = cur->next)
+		if (cur->fp == iop)
+			break;
+	if (cur == NULL)
+		return (-1);
+
+	/* Get the status of the process. */
+	omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
+	do {
+		pid = waitpid(cur->pid, (int *) &pstat, 0);
+	} while (pid == -1 && errno == EINTR);
+	(void)sigsetmask(omask);
+
+	/* Remove the entry from the linked list. */
+	if (last == NULL)
+		pidlist = cur->next;
+	else
+		last->next = cur->next;
+	free(cur);
+
+	return (pid == -1 ? -1 : pstat.w_status);
+}
diff --git a/lib/libc/gen/psignal.3 b/lib/libc/gen/psignal.3
new file mode 100644
index 0000000..4e7cfb8
--- /dev/null
+++ b/lib/libc/gen/psignal.3
@@ -0,0 +1,92 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)psignal.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt PSIGNAL 3
+.Os BSD 4.2
+.Sh NAME
+.Nm psignal ,
+.Nm sys_siglist
+.Nm sys_signame
+.Nd system signal messages
+.Sh SYNOPSIS
+.Fd #include <sys/signal.h>
+.Ft void
+.Fn psignal "unsigned sig" "const char *s"
+.Vt extern char *sys_siglist[];
+.Vt extern char *sys_signame[];
+.Sh DESCRIPTION
+The
+.Fn psignal
+function locates the descriptive message
+string for the given signal number
+.Fa sig
+and writes it to the standard error.
+.Pp
+If the argument
+.Fa s
+is
+.Pf non- Dv NULL
+it is written to the standard error file descriptor
+prior to the message string,
+immediately followed by a colon and a space.
+If the signal number is not recognized
+.Pq Xr sigaction 2 ,
+the string
+.Dq "Unknown signal
+is produced.
+.Pp
+The message strings can be accessed directly
+through the external array
+.Va sys_siglist ,
+indexed by recognized signal numbers.
+The external array
+.Va sys_signame
+is used similarly and
+contains short, lower-case abbreviations for signals
+which are useful for recognizing signal names
+in user input.
+The defined variable
+.Dv NSIG
+contains a count of the strings in
+.Va sys_siglist
+and
+.Va sys_signame .
+.Sh SEE ALSO
+.Xr sigaction 2 ,
+.Xr perror 3
+.Sh HISTORY
+The
+.Fn psignal
+function appeared in 
+.Bx 4.2 .
diff --git a/lib/libc/gen/psignal.c b/lib/libc/gen/psignal.c
new file mode 100644
index 0000000..b7e7ab6
--- /dev/null
+++ b/lib/libc/gen/psignal.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)psignal.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Print the name of the signal indicated
+ * along with the supplied message.
+ */
+#include <signal.h>
+#include <string.h>
+#include <unistd.h>
+
+void
+psignal(sig, s)
+	unsigned int sig;
+	const char *s;
+{
+	register const char *c;
+	register int n;
+
+	if (sig < NSIG)
+		c = sys_siglist[sig];
+	else
+		c = "Unknown signal";
+	n = strlen(s);
+	if (n) {
+		(void)write(STDERR_FILENO, s, n);
+		(void)write(STDERR_FILENO, ": ", 2);
+	}
+	(void)write(STDERR_FILENO, c, strlen(c));
+	(void)write(STDERR_FILENO, "\n", 1);
+}
diff --git a/lib/libc/gen/pw_scan.c b/lib/libc/gen/pw_scan.c
new file mode 100644
index 0000000..9d280f7
--- /dev/null
+++ b/lib/libc/gen/pw_scan.c
@@ -0,0 +1,141 @@
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)pw_scan.c	8.3 (Berkeley) 4/2/94";
+#endif /* not lint */
+
+/*
+ * This module is used to "verify" password entries by chpass(1) and
+ * pwd_mkdb(8).
+ */
+
+#include <sys/param.h>
+
+#include <err.h>
+#include <fcntl.h>
+#include <pwd.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "pw_scan.h"
+
+int
+pw_scan(bp, pw)
+	char *bp;
+	struct passwd *pw;
+{
+	long id;
+	int root;
+	char *p, *sh;
+
+	pw->pw_fields = 0;
+	if (!(pw->pw_name = strsep(&bp, ":")))		/* login */
+		goto fmt;
+	root = !strcmp(pw->pw_name, "root");
+	if(pw->pw_name[0] && (pw->pw_name[0] != '+' || pw->pw_name[1] == '\0'))
+		pw->pw_fields |= _PWF_NAME;
+
+	if (!(pw->pw_passwd = strsep(&bp, ":")))	/* passwd */
+		goto fmt;
+	if(pw->pw_passwd[0]) pw->pw_fields |= _PWF_PASSWD;
+
+	if (!(p = strsep(&bp, ":")))			/* uid */
+		goto fmt;
+	if(p[0]) pw->pw_fields |= _PWF_UID;
+	id = atol(p);
+	if (root && id) {
+		warnx("root uid should be 0");
+		return (0);
+	}
+	if (id > USHRT_MAX) {
+		warnx("%s > max uid value (%d)", p, USHRT_MAX);
+		return (0);
+	}
+	pw->pw_uid = id;
+
+	if (!(p = strsep(&bp, ":")))			/* gid */
+		goto fmt;
+	if(p[0]) pw->pw_fields |= _PWF_GID;
+	id = atol(p);
+	if (id > USHRT_MAX) {
+		warnx("%s > max gid value (%d)", p, USHRT_MAX);
+		return (0);
+	}
+	pw->pw_gid = id;
+
+	pw->pw_class = strsep(&bp, ":");		/* class */
+	if(pw->pw_class[0]) pw->pw_fields |= _PWF_CLASS;
+
+	if (!(p = strsep(&bp, ":")))			/* change */
+		goto fmt;
+	if(p[0]) pw->pw_fields |= _PWF_CHANGE;
+	pw->pw_change = atol(p);
+
+	if (!(p = strsep(&bp, ":")))			/* expire */
+		goto fmt;
+	if(p[0]) pw->pw_fields |= _PWF_EXPIRE;
+	pw->pw_expire = atol(p);
+
+	if (!(pw->pw_gecos = strsep(&bp, ":")))		/* gecos */
+		goto fmt;
+	if(pw->pw_gecos[0]) pw->pw_fields |= _PWF_GECOS;
+
+	if (!(pw->pw_dir = strsep(&bp, ":")))			/* directory */
+		goto fmt;
+	if(pw->pw_dir[0]) pw->pw_fields |= _PWF_DIR;
+
+	if (!(pw->pw_shell = strsep(&bp, ":")))		/* shell */
+		goto fmt;
+
+	p = pw->pw_shell;
+	if (root && *p)					/* empty == /bin/sh */
+		for (setusershell();;) {
+			if (!(sh = getusershell())) {
+				warnx("warning, unknown root shell");
+				break;
+			}
+			if (!strcmp(p, sh))
+				break;
+		}
+	if(p[0]) pw->pw_fields |= _PWF_SHELL;
+
+	if (p = strsep(&bp, ":")) {			/* too many */
+fmt:		warnx("corrupted entry");
+		return (0);
+	}
+	return (1);
+}
diff --git a/lib/libc/gen/pw_scan.h b/lib/libc/gen/pw_scan.h
new file mode 100644
index 0000000..d1d4bc1
--- /dev/null
+++ b/lib/libc/gen/pw_scan.h
@@ -0,0 +1,36 @@
+/*-
+ * Copyright (c) 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)pw_scan.h	8.1 (Berkeley) 4/1/94
+ */
+
+extern int	pw_scan __P((char *, struct passwd *));
diff --git a/lib/libc/gen/pwcache.3 b/lib/libc/gen/pwcache.3
new file mode 100644
index 0000000..74afa74
--- /dev/null
+++ b/lib/libc/gen/pwcache.3
@@ -0,0 +1,90 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)pwcache.3	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt PWCACHE 3
+.Os
+.Sh NAME
+.Nm pwcache
+.Nd cache password and group entries
+.Sh SYNOPSIS
+.Fn user_from_uid "uid_t uid" "int nouser"
+.Fn group_from_gid "gid_t gid" "int nogroup"
+.Sh DESCRIPTION
+.Pp
+The
+.Fn user_from_uid
+function returns the user name associated with the argument
+.Fa uid .
+The user name is cached so that multiple calls with the same
+.Fa uid 
+do not require additional calls to
+.Xr getpwuid 3 .
+If there is no user associated with the
+.Fa uid ,
+a pointer is returned
+to a string representation of the
+.Fa uid ,
+unless the argument
+.Fa nouser
+is non-zero, in which case a
+.Dv NULL
+pointer is returned.
+.Pp
+The
+.Fn group_from_gid
+function returns the group name associated with the argument
+.Fa gid .
+The group name is cached so that multiple calls with the same
+.Fa gid
+do not require additional calls to
+.Xr getgrgid 3 .
+If there is no group associated with the
+.Fa gid ,
+a pointer is returned
+to a string representation of the
+.Fa gid ,
+unless the argument
+.Fa nogroup
+is non-zero, in which case a
+.Dv NULL
+pointer is returned.
+.Sh SEE ALSO
+.Xr getgrgid 3 ,
+.Xr getpwuid 3
+.Sh HISTORY
+The
+.Fn user_from_id
+and
+.Fn group_from_id
+functions first appeared in 4.4BSD.
diff --git a/lib/libc/gen/pwcache.c b/lib/libc/gen/pwcache.c
new file mode 100644
index 0000000..7c266c1
--- /dev/null
+++ b/lib/libc/gen/pwcache.c
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)pwcache.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <grp.h>
+#include <string.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <utmp.h>
+
+#define	NCACHE	64			/* power of 2 */
+#define	MASK	NCACHE - 1		/* bits to store with */
+
+char *
+user_from_uid(uid, nouser)
+	uid_t uid;
+	int nouser;
+{
+	static struct ncache {
+		uid_t	uid;
+		char	name[UT_NAMESIZE + 1];
+	} c_uid[NCACHE];
+	static int pwopen;
+	static char nbuf[15];		/* 32 bits == 10 digits */
+	register struct passwd *pw;
+	register struct ncache *cp;
+
+	cp = c_uid + (uid & MASK);
+	if (cp->uid != uid || !*cp->name) {
+		if (pwopen == 0) {
+			setpassent(1);
+			pwopen = 1;
+		}
+		if ((pw = getpwuid(uid)) == NULL) {
+			if (nouser)
+				return (NULL);
+			(void)snprintf(nbuf, sizeof(nbuf), "%u", uid);
+			return (nbuf);
+		}
+		cp->uid = uid;
+		(void)strncpy(cp->name, pw->pw_name, UT_NAMESIZE);
+		cp->name[UT_NAMESIZE] = '\0';
+	}
+	return (cp->name);
+}
+
+char *
+group_from_gid(gid, nogroup)
+	gid_t gid;
+	int nogroup;
+{
+	static struct ncache {
+		gid_t	gid;
+		char	name[UT_NAMESIZE + 1];
+	} c_gid[NCACHE];
+	static int gropen;
+	static char nbuf[15];		/* 32 bits == 10 digits */
+	struct group *gr;
+	struct ncache *cp;
+
+	cp = c_gid + (gid & MASK);
+	if (cp->gid != gid || !*cp->name) {
+		if (gropen == 0) {
+			setgroupent(1);
+			gropen = 1;
+		}
+		if ((gr = getgrgid(gid)) == NULL) {
+			if (nogroup)
+				return (NULL);
+			(void)snprintf(nbuf, sizeof(nbuf), "%u", gid);
+			return (nbuf);
+		}
+		cp->gid = gid;
+		(void)strncpy(cp->name, gr->gr_name, UT_NAMESIZE);
+		cp->name[UT_NAMESIZE] = '\0';
+	}
+	return (cp->name);
+}
diff --git a/lib/libc/gen/raise.3 b/lib/libc/gen/raise.3
new file mode 100644
index 0000000..9df3124
--- /dev/null
+++ b/lib/libc/gen/raise.3
@@ -0,0 +1,77 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)raise.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt RAISE 3
+.Os
+.Sh NAME
+.Nm raise
+.Nd send a signal to the current process
+.Sh SYNOPSIS
+.Fd #include <signal.h>
+.Ft int
+.Fn raise "int sig"
+.Sh DESCRIPTION
+The
+.Fn raise
+function sends the signal
+.Fa sig
+to the current process.
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.
+Otherwise, a value of \-1 is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+The
+.Fn raise
+function
+may fail and set
+.Va errno
+for any of the errors specified for the
+library functions
+.Xr getpid 2
+and
+.Xr kill 2 .
+.Sh SEE ALSO
+.Xr kill 2
+.Sh STANDARDS
+The
+.Fn raise
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/gen/raise.c b/lib/libc/gen/raise.c
new file mode 100644
index 0000000..75ecaa1
--- /dev/null
+++ b/lib/libc/gen/raise.c
@@ -0,0 +1,45 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)raise.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <signal.h>
+#include <unistd.h>
+
+raise(s)
+	int s;
+{
+	return(kill(getpid(), s));
+}
diff --git a/lib/libc/gen/rand48.3 b/lib/libc/gen/rand48.3
new file mode 100644
index 0000000..9fadeb2
--- /dev/null
+++ b/lib/libc/gen/rand48.3
@@ -0,0 +1,160 @@
+\" Copyright (c) 1993 Martin Birgmeier
+.\" All rights reserved.
+.\"
+.\" You may redistribute unmodified or modified versions of this source
+.\" code provided that the above copyright notice and this and the
+.\" following conditions are retained.
+.\"
+.\" This software is provided ``as is'', and comes with no warranties
+.\" of any kind. I shall in no event be liable for anything that happens
+.\" to anyone/anything when using this software.
+.\"
+.\"     @(#)rand48.3 V1.0 MB 8 Oct 1993
+.\"
+.Dd October 8, 1993
+.Dt RAND48 3
+.Os FreeBSD
+.Sh NAME
+.Nm drand48 ,
+.Nm erand48 ,
+.Nm lrand48 ,
+.Nm nrand48 ,
+.Nm mrand48 ,
+.Nm jrand48 ,
+.Nm srand48 ,
+.Nm seed48 ,
+.Nm lcong48
+.Nd pseudo random number generators and initialization routines
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft double 
+.Fn drand48 void
+.Ft double
+.Fn erand48 "unsigned short xseed[3]"
+.Ft long
+.Fn lrand48 void
+.Ft long
+.Fn nrand48 "unsigned short xseed[3]"
+.Ft long
+.Fn mrand48 void
+.Ft long
+.Fn jrand48 "unsigned short xseed[3]"
+.Ft void
+.Fn srand48 "long seed"
+.Ft "unsigned short *"
+.Fn seed48 "unsigned short xseed[3]"
+.Ft void
+.Fn lcong48 "unsigned short p[7]"
+.Sh DESCRIPTION
+The
+.Fn rand48
+family of functions generates pseudo-random numbers using a linear
+congruential algorithm working on integers 48 bits in size. The
+particular formula employed is
+r(n+1) = (a * r(n) + c) mod m
+where the default values are
+for the multiplicand a = 0xfdeece66d = 25214903917 and
+the addend c = 0xb = 11. The modul is always fixed at m = 2 ** 48.
+r(n) is called the seed of the random number generator.
+.Pp
+For all the six generator routines described next, the first
+computational step is to perform a single iteration of the algorithm.
+.Pp
+.Fn drand48
+and
+.Fn erand48
+return values of type double. The full 48 bits of r(n+1) are
+loaded into the mantissa of the returned value, with the exponent set
+such that the values produced lie in the interval [0.0, 1.0).
+.Pp
+.Fn lrand48
+and
+.Fn nrand48
+return values of type long in the range
+[0, 2**31-1]. The high-order (31) bits of
+r(n+1) are loaded into the lower bits of the returned value, with
+the topmost (sign) bit set to zero.
+.Pp
+.Fn mrand48
+and
+.Fn jrand48
+return values of type long in the range
+[-2**31, 2**31-1]. The high-order (32) bits of
+r(n+1) are loaded into the returned value.
+.Pp
+.Fn drand48 ,
+.Fn lrand48 ,
+and
+.Fn mrand48
+use an internal buffer to store r(n). For these functions
+the initial value of r(0) = 0x1234abcd330e = 20017429951246.
+.Pp
+On the other hand,
+.Fn erand48 ,
+.Fn nrand48 ,
+and
+.Fn jrand48
+use a user-supplied buffer to store the seed r(n),
+which consists of an array of 3 shorts, where the zeroth member
+holds the least significant bits.
+.Pp
+All functions share the same multiplicand and addend.
+.Pp
+.Fn srand48
+is used to initialize the internal buffer r(n) of
+.Fn drand48 ,
+.Fn lrand48 ,
+and
+.Fn mrand48
+such that the 32 bits of the seed value are copied into the upper 32 bits
+of r(n), with the lower 16 bits of r(n) arbitrarily being set to 0x330e.
+Additionally, the constant multiplicand and addend of the algorithm are
+reset to the default values given above.
+.Pp
+.Fn seed48
+also initializes the internal buffer r(n) of
+.Fn drand48 ,
+.Fn lrand48 ,
+and
+.Fn mrand48 ,
+but here all 48 bits of the seed can be specified in an array of 3 shorts,
+where the zeroth member specifies the lowest bits. Again,
+the constant multiplicand and addend of the algorithm are
+reset to the default values given above.
+.Fn seed48
+returns a pointer to an array of 3 shorts which contains the old seed.
+This array is statically allocated, thus its contents are lost after
+each new call to
+.Fn seed48 .
+.Pp
+Finally,
+.Fn lcong48
+allows full control over the multiplicand and addend used in
+.Fn drand48 ,
+.Fn erand48 ,
+.Fn lrand48 ,
+.Fn nrand48 ,
+.Fn mrand48 ,
+and
+.Fn jrand48 ,
+and the seed used in
+.Fn drand48 ,
+.Fn lrand48 ,
+and
+.Fn mrand48 .
+An array of 7 shorts is passed as parameter; the first three shorts are
+used to initialize the seed; the second three are used to initialize the
+multiplicand; and the last short is used to initialize the addend.
+It is thus not possible to use values greater than 0xffff as the addend.
+.Pp
+Note that all three methods of seeding the random number generator
+always also set the multiplicand and addend for any of the six
+generator calls.
+.Pp
+For a more powerful random number generator, see
+.Xr random 3
+.Sh AUTHOR
+Martin Birgmeier
+.Sh SEE ALSO
+.Xr rand 3 ,
+.Xr random 3 .
diff --git a/lib/libc/gen/rand48.h b/lib/libc/gen/rand48.h
new file mode 100644
index 0000000..5b9f87d
--- /dev/null
+++ b/lib/libc/gen/rand48.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 1993 Martin Birgmeier
+ * All rights reserved.
+ *
+ * You may redistribute unmodified or modified versions of this source
+ * code provided that the above copyright notice and this and the
+ * following conditions are retained.
+ *
+ * This software is provided ``as is'', and comes with no warranties
+ * of any kind. I shall in no event be liable for anything that happens
+ * to anyone/anything when using this software.
+ */
+
+#ifndef _RAND48_H_
+#define _RAND48_H_
+
+#include <math.h>
+#include <stdlib.h>
+
+void		_dorand48 __P((unsigned short[3]));
+
+#define	RAND48_SEED_0	(0x330e)
+#define	RAND48_SEED_1	(0xabcd)
+#define	RAND48_SEED_2	(0x1234)
+#define	RAND48_MULT_0	(0xe66d)
+#define	RAND48_MULT_1	(0xdeec)
+#define	RAND48_MULT_2	(0x0005)
+#define	RAND48_ADD	(0x000b)
+
+#endif /* _RAND48_H_ */
diff --git a/lib/libc/gen/readdir.c b/lib/libc/gen/readdir.c
new file mode 100644
index 0000000..d0651da
--- /dev/null
+++ b/lib/libc/gen/readdir.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)readdir.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <dirent.h>
+
+/*
+ * get next entry in a directory.
+ */
+struct dirent *
+readdir(dirp)
+	register DIR *dirp;
+{
+	register struct dirent *dp;
+
+	for (;;) {
+		if (dirp->dd_loc == 0) {
+			dirp->dd_size = getdirentries(dirp->dd_fd,
+			    dirp->dd_buf, dirp->dd_len, &dirp->dd_seek);
+			if (dirp->dd_size <= 0)
+				return NULL;
+		}
+		if (dirp->dd_loc >= dirp->dd_size) {
+			dirp->dd_loc = 0;
+			continue;
+		}
+		dp = (struct dirent *)(dirp->dd_buf + dirp->dd_loc);
+		if ((int)dp & 03)	/* bogus pointer check */
+			return NULL;
+		if (dp->d_reclen <= 0 ||
+		    dp->d_reclen > dirp->dd_len + 1 - dirp->dd_loc)
+			return NULL;
+		dirp->dd_loc += dp->d_reclen;
+		if (dp->d_ino == 0)
+			continue;
+		return (dp);
+	}
+}
diff --git a/lib/libc/gen/rewinddir.c b/lib/libc/gen/rewinddir.c
new file mode 100644
index 0000000..b46bcf3
--- /dev/null
+++ b/lib/libc/gen/rewinddir.c
@@ -0,0 +1,48 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rewinddir.c	8.1 (Berkeley) 6/8/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <dirent.h>
+
+void
+rewinddir(dirp)
+	DIR *dirp;
+{
+
+	_seekdir(dirp, dirp->dd_rewind);
+	dirp->dd_rewind = telldir(dirp);
+}
diff --git a/lib/libc/gen/scandir.3 b/lib/libc/gen/scandir.3
new file mode 100644
index 0000000..49e15d1
--- /dev/null
+++ b/lib/libc/gen/scandir.3
@@ -0,0 +1,106 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)scandir.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SCANDIR 3
+.Os BSD 4.2
+.Sh NAME
+.Nm scandir ,
+.Nm alphasort
+.Nd scan a directory
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <dirent.h>
+.Ft int
+.Fn scandir "const char *dirname" "struct dirent ***namelist" "int \\*(lp*select\\*(rp\\*(lpstruct dirent *\\*(rp" "int \\*(lp*compar\\*(rp\\*(lpconst void *, const void *\\*(rp"
+.Ft int
+.Fn alphasort "const void *d1" "const void *d2"
+.Sh DESCRIPTION
+The
+.Fn scandir
+function
+reads the directory
+.Fa dirname
+and builds an array of pointers to directory
+entries using
+.Xr malloc 3 .
+It returns the number of entries in the array.
+A pointer to the array of directory entries is stored in the location
+referenced by
+.Fa namelist .
+.Pp
+The
+.Fa select
+parameter is a pointer to a user supplied subroutine which is called by
+.Fn scandir
+to select which entries are to be included in the array.
+The select routine is passed a
+pointer to a directory entry and should return a non-zero
+value if the directory entry is to be included in the array.
+If
+.Fa select
+is null, then all the directory entries will be included.
+.Pp
+The
+.Fa compar
+parameter is a pointer to a user supplied subroutine which is passed to
+.Xr qsort 3
+to sort the completed array.
+If this pointer is null, the array is not sorted.
+.Pp
+The
+.Fn alphasort
+function
+is a routine which can be used for the
+.Fa compar
+parameter to sort the array alphabetically.
+.Pp
+The memory allocated for the array can be deallocated with
+.Xr free 3 ,
+by freeing each pointer in the array and then the array itself.
+.Sh DIAGNOSTICS
+Returns \-1 if the directory cannot be opened for reading or if
+.Xr malloc 3
+cannot allocate enough memory to hold all the data structures.
+.Sh SEE ALSO
+.Xr directory 3 ,
+.Xr malloc 3 ,
+.Xr qsort 3 ,
+.Xr dir 5
+.Sh HISTORY
+The
+.Fn scandir
+and
+.Fn alphasort
+functions appeared in 
+.Bx 4.2 .
diff --git a/lib/libc/gen/scandir.c b/lib/libc/gen/scandir.c
new file mode 100644
index 0000000..e6e8408
--- /dev/null
+++ b/lib/libc/gen/scandir.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)scandir.c	8.3 (Berkeley) 1/2/94";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Scan the directory dirname calling select to make a list of selected
+ * directory entries then sort using qsort and compare routine dcomp.
+ * Returns the number of entries and a pointer to a list of pointers to
+ * struct dirent (through namelist). Returns -1 if there were any errors.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <stdlib.h>
+#include <string.h>
+
+/*
+ * The DIRSIZ macro is the minimum record length which will hold the directory
+ * entry.  This requires the amount of space in struct dirent without the
+ * d_name field, plus enough space for the name and a terminating nul byte
+ * (dp->d_namlen + 1), rounded up to a 4 byte boundary.
+ */
+#undef DIRSIZ
+#define DIRSIZ(dp)							\
+	((sizeof(struct dirent) - sizeof(dp)->d_name) +			\
+	    (((dp)->d_namlen + 1 + 3) &~ 3))
+
+int
+scandir(dirname, namelist, select, dcomp)
+	const char *dirname;
+	struct dirent ***namelist;
+	int (*select) __P((struct dirent *));
+	int (*dcomp) __P((const void *, const void *));
+{
+	register struct dirent *d, *p, **names;
+	register size_t nitems;
+	struct stat stb;
+	long arraysz;
+	DIR *dirp;
+
+	if ((dirp = opendir(dirname)) == NULL)
+		return(-1);
+	if (fstat(dirp->dd_fd, &stb) < 0)
+		return(-1);
+
+	/*
+	 * estimate the array size by taking the size of the directory file
+	 * and dividing it by a multiple of the minimum size entry.
+	 */
+	arraysz = (stb.st_size / 24);
+	names = (struct dirent **)malloc(arraysz * sizeof(struct dirent *));
+	if (names == NULL)
+		return(-1);
+
+	nitems = 0;
+	while ((d = readdir(dirp)) != NULL) {
+		if (select != NULL && !(*select)(d))
+			continue;	/* just selected names */
+		/*
+		 * Make a minimum size copy of the data
+		 */
+		p = (struct dirent *)malloc(DIRSIZ(d));
+		if (p == NULL)
+			return(-1);
+		p->d_fileno = d->d_fileno;
+		p->d_type = d->d_type;
+		p->d_reclen = d->d_reclen;
+		p->d_namlen = d->d_namlen;
+		bcopy(d->d_name, p->d_name, p->d_namlen + 1);
+		/*
+		 * Check to make sure the array has space left and
+		 * realloc the maximum size.
+		 */
+		if (++nitems >= arraysz) {
+			if (fstat(dirp->dd_fd, &stb) < 0)
+				return(-1);	/* just might have grown */
+			arraysz = stb.st_size / 12;
+			names = (struct dirent **)realloc((char *)names,
+				arraysz * sizeof(struct dirent *));
+			if (names == NULL)
+				return(-1);
+		}
+		names[nitems-1] = p;
+	}
+	closedir(dirp);
+	if (nitems && dcomp != NULL)
+		qsort(names, nitems, sizeof(struct dirent *), dcomp);
+	*namelist = names;
+	return(nitems);
+}
+
+/*
+ * Alphabetic order comparison routine for those who want it.
+ */
+int
+alphasort(d1, d2)
+	const void *d1;
+	const void *d2;
+{
+	return(strcmp((*(struct dirent **)d1)->d_name,
+	    (*(struct dirent **)d2)->d_name));
+}
diff --git a/lib/libc/gen/seed48.c b/lib/libc/gen/seed48.c
new file mode 100644
index 0000000..258c4ba
--- /dev/null
+++ b/lib/libc/gen/seed48.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 1993 Martin Birgmeier
+ * All rights reserved.
+ *
+ * You may redistribute unmodified or modified versions of this source
+ * code provided that the above copyright notice and this and the
+ * following conditions are retained.
+ *
+ * This software is provided ``as is'', and comes with no warranties
+ * of any kind. I shall in no event be liable for anything that happens
+ * to anyone/anything when using this software.
+ */
+
+#include "rand48.h"
+
+extern unsigned short _rand48_seed[3];
+extern unsigned short _rand48_mult[3];
+extern unsigned short _rand48_add;
+
+unsigned short *
+seed48(unsigned short xseed[3])
+{
+	static unsigned short sseed[3];
+
+	sseed[0] = _rand48_seed[0];
+	sseed[1] = _rand48_seed[1];
+	sseed[2] = _rand48_seed[2];
+	_rand48_seed[0] = xseed[0];
+	_rand48_seed[1] = xseed[1];
+	_rand48_seed[2] = xseed[2];
+	_rand48_mult[0] = RAND48_MULT_0;
+	_rand48_mult[1] = RAND48_MULT_1;
+	_rand48_mult[2] = RAND48_MULT_2;
+	_rand48_add = RAND48_ADD;
+	return sseed;
+}
diff --git a/lib/libc/gen/seekdir.c b/lib/libc/gen/seekdir.c
new file mode 100644
index 0000000..48b4646
--- /dev/null
+++ b/lib/libc/gen/seekdir.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)seekdir.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <dirent.h>
+
+/*
+ * Seek to an entry in a directory.
+ * _seekdir is in telldir.c so that it can share opaque data structures.
+ */
+void
+seekdir(dirp, loc)
+	DIR *dirp;
+	long loc;
+{
+
+	_seekdir(dirp, loc);
+}
diff --git a/lib/libc/gen/semconfig.c b/lib/libc/gen/semconfig.c
new file mode 100644
index 0000000..cf5399b
--- /dev/null
+++ b/lib/libc/gen/semconfig.c
@@ -0,0 +1,13 @@
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/sem.h>
+
+#if __STDC__
+int semconfig(int cmd, int p1, int p2, int p3)
+#else
+int semconfig(cmd, p1, p2, p3)
+	int cmd, p1, p2, p3;
+#endif
+{
+	return (semsys(3, cmd, p1, p2, p3));
+}
diff --git a/lib/libc/gen/semctl.c b/lib/libc/gen/semctl.c
new file mode 100644
index 0000000..313a1db
--- /dev/null
+++ b/lib/libc/gen/semctl.c
@@ -0,0 +1,15 @@
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/sem.h>
+
+#if __STDC__
+int semctl(int semid, int semnum, int cmd, union semun semun)
+#else
+int semctl(semid, int semnum, cmd, semun)
+	int semid, semnum;
+	int cmd;
+	union semun semun;
+#endif
+{
+	return (semsys(0, semid, semnum, cmd, &semun));
+}
diff --git a/lib/libc/gen/semget.c b/lib/libc/gen/semget.c
new file mode 100644
index 0000000..81c6a86
--- /dev/null
+++ b/lib/libc/gen/semget.c
@@ -0,0 +1,15 @@
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/sem.h>
+
+#if __STDC__
+int semget(key_t key, int nsems, int semflg)
+#else
+int semget(key, nsems, semflg)
+	key_t key;
+	int nsems;
+	int semflg;
+#endif
+{
+	return (semsys(1, key, nsems, semflg));
+}
diff --git a/lib/libc/gen/semop.c b/lib/libc/gen/semop.c
new file mode 100644
index 0000000..0b97c6a
--- /dev/null
+++ b/lib/libc/gen/semop.c
@@ -0,0 +1,15 @@
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/sem.h>
+
+#if __STDC__
+int semop(int semid, struct sembuf *sops, unsigned nsops)
+#else
+int semop(semid, sops, nsops)
+	int semid;
+	struct sembuf *sops;
+	unsigned nsops;
+#endif
+{
+	return (semsys(2, semid, sops, nsops, 0));
+}
diff --git a/lib/libc/gen/setdomainname.c b/lib/libc/gen/setdomainname.c
new file mode 100644
index 0000000..6471762
--- /dev/null
+++ b/lib/libc/gen/setdomainname.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*
+static char sccsid[] = "From: @(#)sethostname.c	8.1 (Berkeley) 6/4/93";
+*/
+static const char rcsid[] =
+  "$Id$";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+#if __STDC__
+long
+setdomainname(const char *name, int namelen)
+#else
+long
+setdomainname(name, namelen)
+	char *name;
+	int namelen;
+#endif
+{
+	int mib[2];
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_DOMAINNAME;
+	if (sysctl(mib, 2, NULL, NULL, (void *)name, namelen) == -1)
+		return (-1);
+	return (0);
+}
diff --git a/lib/libc/gen/setflags.c b/lib/libc/gen/setflags.c
new file mode 100644
index 0000000..d62a0fd
--- /dev/null
+++ b/lib/libc/gen/setflags.c
@@ -0,0 +1,150 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)stat_flags.c	8.1 (Berkeley) 5/31/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <stddef.h>
+#include <string.h>
+
+#define	SAPPEND(s) {							\
+	if (prefix != NULL)						\
+		(void)strcat(string, prefix);				\
+	(void)strcat(string, s);					\
+	prefix = ",";							\
+}
+
+/*
+ * flags_to_string --
+ *	Convert stat flags to a comma-separated string.  If no flags
+ *	are set, return the default string.
+ */
+char *
+flags_to_string(flags, def)
+	u_long flags;
+	char *def;
+{
+	static char string[128];
+	char *prefix;
+
+	string[0] = '\0';
+	prefix = NULL;
+	if (flags & UF_APPEND)
+		SAPPEND("uappnd");
+	if (flags & UF_IMMUTABLE)
+		SAPPEND("uchg");
+	if (flags & UF_NODUMP)
+		SAPPEND("nodump");
+	if (flags & SF_APPEND)
+		SAPPEND("sappnd");
+	if (flags & SF_ARCHIVED)
+		SAPPEND("arch");
+	if (flags & SF_IMMUTABLE)
+		SAPPEND("schg");
+	return (prefix == NULL && def != NULL ? def : string);
+}
+
+#define	TEST(a, b, f) {							\
+	if (!memcmp(a, b, sizeof(b))) {					\
+		if (clear) {						\
+			if (clrp)					\
+				*clrp |= (f);				\
+		} else if (setp)					\
+			*setp |= (f);					\
+		break;							\
+	}								\
+}
+
+/*
+ * string_to_flags --
+ *	Take string of arguments and return stat flags.  Return 0 on
+ *	success, 1 on failure.  On failure, stringp is set to point
+ *	to the offending token.
+ */
+int
+string_to_flags(stringp, setp, clrp)
+	char **stringp;
+	u_long *setp, *clrp;
+{
+	int clear;
+	char *string, *p;
+
+	clear = 0;
+	if (setp)
+		*setp = 0;
+	if (clrp)
+		*clrp = 0;
+	string = *stringp;
+	while ((p = strsep(&string, "\t ,")) != NULL) {
+		*stringp = p;
+		if (*p == '\0')
+			continue;
+		if (p[0] == 'n' && p[1] == 'o') {
+			clear = 1;
+			p += 2;
+		}
+		switch (p[0]) {
+		case 'a':
+			TEST(p, "arch", SF_ARCHIVED);
+			TEST(p, "archived", SF_ARCHIVED);
+			return (1);
+		case 'd':
+			clear = !clear;
+			TEST(p, "dump", UF_NODUMP);
+			return (1);
+		case 's':
+			TEST(p, "sappnd", SF_APPEND);
+			TEST(p, "sappend", SF_APPEND);
+			TEST(p, "schg", SF_IMMUTABLE);
+			TEST(p, "schange", SF_IMMUTABLE);
+			TEST(p, "simmutable", SF_IMMUTABLE);
+			return (1);
+		case 'u':
+			TEST(p, "uappnd", UF_APPEND);
+			TEST(p, "uappend", UF_APPEND);
+			TEST(p, "uchg", UF_IMMUTABLE);
+			TEST(p, "uchange", UF_IMMUTABLE);
+			TEST(p, "uimmutable", UF_IMMUTABLE);
+			/* FALLTHROUGH */
+		default:
+			return (1);
+		}
+	}
+	return (0);
+}
diff --git a/lib/libc/gen/setflagsbyname.c b/lib/libc/gen/setflagsbyname.c
new file mode 100644
index 0000000..d62a0fd
--- /dev/null
+++ b/lib/libc/gen/setflagsbyname.c
@@ -0,0 +1,150 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)stat_flags.c	8.1 (Berkeley) 5/31/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <stddef.h>
+#include <string.h>
+
+#define	SAPPEND(s) {							\
+	if (prefix != NULL)						\
+		(void)strcat(string, prefix);				\
+	(void)strcat(string, s);					\
+	prefix = ",";							\
+}
+
+/*
+ * flags_to_string --
+ *	Convert stat flags to a comma-separated string.  If no flags
+ *	are set, return the default string.
+ */
+char *
+flags_to_string(flags, def)
+	u_long flags;
+	char *def;
+{
+	static char string[128];
+	char *prefix;
+
+	string[0] = '\0';
+	prefix = NULL;
+	if (flags & UF_APPEND)
+		SAPPEND("uappnd");
+	if (flags & UF_IMMUTABLE)
+		SAPPEND("uchg");
+	if (flags & UF_NODUMP)
+		SAPPEND("nodump");
+	if (flags & SF_APPEND)
+		SAPPEND("sappnd");
+	if (flags & SF_ARCHIVED)
+		SAPPEND("arch");
+	if (flags & SF_IMMUTABLE)
+		SAPPEND("schg");
+	return (prefix == NULL && def != NULL ? def : string);
+}
+
+#define	TEST(a, b, f) {							\
+	if (!memcmp(a, b, sizeof(b))) {					\
+		if (clear) {						\
+			if (clrp)					\
+				*clrp |= (f);				\
+		} else if (setp)					\
+			*setp |= (f);					\
+		break;							\
+	}								\
+}
+
+/*
+ * string_to_flags --
+ *	Take string of arguments and return stat flags.  Return 0 on
+ *	success, 1 on failure.  On failure, stringp is set to point
+ *	to the offending token.
+ */
+int
+string_to_flags(stringp, setp, clrp)
+	char **stringp;
+	u_long *setp, *clrp;
+{
+	int clear;
+	char *string, *p;
+
+	clear = 0;
+	if (setp)
+		*setp = 0;
+	if (clrp)
+		*clrp = 0;
+	string = *stringp;
+	while ((p = strsep(&string, "\t ,")) != NULL) {
+		*stringp = p;
+		if (*p == '\0')
+			continue;
+		if (p[0] == 'n' && p[1] == 'o') {
+			clear = 1;
+			p += 2;
+		}
+		switch (p[0]) {
+		case 'a':
+			TEST(p, "arch", SF_ARCHIVED);
+			TEST(p, "archived", SF_ARCHIVED);
+			return (1);
+		case 'd':
+			clear = !clear;
+			TEST(p, "dump", UF_NODUMP);
+			return (1);
+		case 's':
+			TEST(p, "sappnd", SF_APPEND);
+			TEST(p, "sappend", SF_APPEND);
+			TEST(p, "schg", SF_IMMUTABLE);
+			TEST(p, "schange", SF_IMMUTABLE);
+			TEST(p, "simmutable", SF_IMMUTABLE);
+			return (1);
+		case 'u':
+			TEST(p, "uappnd", UF_APPEND);
+			TEST(p, "uappend", UF_APPEND);
+			TEST(p, "uchg", UF_IMMUTABLE);
+			TEST(p, "uchange", UF_IMMUTABLE);
+			TEST(p, "uimmutable", UF_IMMUTABLE);
+			/* FALLTHROUGH */
+		default:
+			return (1);
+		}
+	}
+	return (0);
+}
diff --git a/lib/libc/gen/sethostname.c b/lib/libc/gen/sethostname.c
new file mode 100644
index 0000000..639837e
--- /dev/null
+++ b/lib/libc/gen/sethostname.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)sethostname.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+#if __STDC__
+long
+sethostname(const char *name, int namelen)
+#else
+long
+sethostname(name, namelen)
+	char *name;
+	int namelen;
+#endif
+{
+	int mib[2];
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_HOSTNAME;
+	if (sysctl(mib, 2, NULL, NULL, (void *)name, namelen) == -1)
+		return (-1);
+	return (0);
+}
diff --git a/lib/libc/gen/setjmp.3 b/lib/libc/gen/setjmp.3
new file mode 100644
index 0000000..47cdfa5
--- /dev/null
+++ b/lib/libc/gen/setjmp.3
@@ -0,0 +1,172 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)setjmp.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SETJMP 3
+.Os BSD 4
+.Sh NAME
+.Nm sigsetjmp ,
+.Nm siglongjmp ,
+.Nm setjmp ,
+.Nm longjmp ,
+.Nm _setjmp ,
+.Nm _longjmp longjmperror
+.Nd non-local jumps
+.Sh SYNOPSIS
+.Fd #include <setjmp.h>
+.Ft int
+.Fn sigsetjmp "sigjmp_buf env" "int savemask"
+.Ft void
+.Fn siglongjmp "sigjmp_buf env" "int val"
+.Ft int
+.Fn setjmp "jmp_buf env"
+.Ft void
+.Fn longjmp "jmp_buf env" "int val"
+.Ft int
+.Fn _setjmp "jmp_buf env"
+.Ft void
+.Fn _longjmp "jmp_buf env" "int val"
+.Ft void
+.Fn longjmperror void
+.Sh DESCRIPTION
+The
+.Fn sigsetjmp ,
+.Fn setjmp ,
+and
+.Fn _setjmp
+functions save their calling environment in
+.Fa env .
+Each of these functions returns 0.
+.Pp
+The corresponding
+.Fn longjmp
+functions restore the environment saved by their most recent respective
+invocations
+of the
+.Fn setjmp
+function.
+They then return so that program execution continues as if the corresponding
+invocation of the
+.Fn setjmp
+call had just returned  the value specified by
+.Fa val ,
+instead of 0.
+.Pp
+Pairs of calls may be intermixed, i.e. both
+.Fn sigsetjmp
+and
+.Fn siglongjmp
+and
+.Fn setjmp
+and
+.Fn longjmp
+combinations may be used in the same program, however, individual
+calls may not, e.g. the
+.Fa env
+argument to
+.Fn setjmp
+may not be passed to
+.Fn siglongjmp .
+.Pp
+The
+.Fn longjmp
+routines may not be called after the routine which called the
+.Fn setjmp
+routines returns.
+.Pp
+All accessible objects have values as of the time
+.Fn longjmp
+routine was called, except that the values of objects of automatic storage
+invocation duration that do not have the
+.Em volatile
+type and have been changed between the
+.Fn setjmp
+invocation and
+.Fn longjmp
+call are indeterminate.
+.Pp
+The
+.Fn setjmp Ns / Ns Fn longjmp
+pairs save and restore the signal mask while
+.Fn _setjmp Ns / Ns Fn _longjmp
+pairs save and restore only the register set and the stack.
+(See
+.Fn sigmask 2 . )
+.Pp
+The
+.Fn sigsetjmp Ns / Ns Fn siglongjmp
+function
+pairs save and restore the signal mask if the argument
+.Fa savemask
+is non-zero, otherwise only the register set and the stack are saved.
+.Sh ERRORS
+If the contents of the
+.Fa env
+are corrupted, or correspond to an environment that has already returned,
+the
+.Fn longjmp
+routine calls the routine
+.Fn longjmperror 3 .
+If
+.Fn longjmperror
+returns the program is aborted (see
+.Xr abort 2 ) .
+The default version of
+.Fn longjmperror
+prints the message
+.Dq Li longjmp botch
+to standard error and returns.
+User programs wishing to exit more gracefully should write their own
+versions of
+.Fn longjmperror .
+.Sh SEE ALSO
+.Xr sigaction 2 ,
+.Xr sigaltstack 2 ,
+.Xr signal 3
+.Sh STANDARDS
+The
+.Fn setjmp
+and
+.Fn longjmp
+functions conform to
+.St -ansiC .
+The
+.Fn sigsetjmp
+and
+.Fn siglongjmp
+functions conform to
+.St -p1003.1-88 .
diff --git a/lib/libc/gen/setjmperr.c b/lib/libc/gen/setjmperr.c
new file mode 100644
index 0000000..26f83b5
--- /dev/null
+++ b/lib/libc/gen/setjmperr.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 1980, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)setjmperr.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * This routine is called from longjmp() when an error occurs.
+ * Programs that wish to exit gracefully from this error may
+ * write their own versions.
+ * If this routine returns, the program is aborted.
+ */
+
+#include <setjmp.h>
+#include <unistd.h>
+
+void
+longjmperror()
+{
+#define	ERRMSG	"longjmp botch.\n"
+	(void)write(STDERR_FILENO, ERRMSG, sizeof(ERRMSG) - 1);
+}
diff --git a/lib/libc/gen/setmode.3 b/lib/libc/gen/setmode.3
new file mode 100644
index 0000000..4a236b2
--- /dev/null
+++ b/lib/libc/gen/setmode.3
@@ -0,0 +1,105 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)setmode.3	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt SETMODE 3
+.Os
+.Sh NAME
+.Nm getmode ,
+.Nm setmode
+.Nd modify mode bits
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft mode_t
+.Fn getmode "const void *set" "mode_t mode"
+.Ft void *
+.Fn setmode "const char *mode_str"
+.Sh DESCRIPTION
+The
+.Fn getmode
+function
+returns a copy of the file permission bits
+.Fa mode
+as altered by the values pointed to by
+.Fa set .
+While only the mode bits are altered, other parts of the file mode
+may be examined.
+.Pp
+The
+.Fn setmode
+function
+takes an absolute (octal) or symbolic value, as described in
+.Xr chmod 1 ,
+as an argument
+and returns a pointer to mode values to be supplied to
+.Fn getmode .
+Because some of the symbolic values are relative to the file
+creation mask,
+.Fn setmode
+may call
+.Xr umask 2 .
+If this occurs, the file creation mask will be restored before
+.Fn setmode
+returns.
+If the calling program changes the value of its file creation mask
+after calling
+.Fn setmode ,
+.Fn setmode
+must be called again if
+.Fn getmode
+is to modify future file modes correctly.
+.Pp
+If the mode passed to
+.Fn setmode
+is invalid,
+.Fn setmode
+returns
+.Dv NULL . 
+.Sh ERRORS
+The
+.Fn setmode
+function
+may fail and set errno for any of the errors specified for the library
+routine
+.Xr malloc 3 .
+.Sh SEE ALSO
+.Xr chmod 1 ,
+.Xr stat 2 ,
+.Xr umask 2 ,
+.Xr malloc 3
+.Sh HISTORY
+The
+.Fn getmode
+and
+.Fn setmode
+functions first appeared in 4.4BSD.
diff --git a/lib/libc/gen/setmode.c b/lib/libc/gen/setmode.c
new file mode 100644
index 0000000..c69d775
--- /dev/null
+++ b/lib/libc/gen/setmode.c
@@ -0,0 +1,453 @@
+/*
+ * Copyright (c) 1989, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Dave Borman at Cray Research, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)setmode.c	8.2 (Berkeley) 3/25/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <signal.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+#ifdef SETMODE_DEBUG
+#include <stdio.h>
+#endif
+
+#define	SET_LEN	6		/* initial # of bitcmd struct to malloc */
+#define	SET_LEN_INCR 4		/* # of bitcmd structs to add as needed */
+
+typedef struct bitcmd {
+	char	cmd;
+	char	cmd2;
+	mode_t	bits;
+} BITCMD;
+
+#define	CMD2_CLR	0x01
+#define	CMD2_SET	0x02
+#define	CMD2_GBITS	0x04
+#define	CMD2_OBITS	0x08
+#define	CMD2_UBITS	0x10
+
+static BITCMD	*addcmd __P((BITCMD *, int, int, int, u_int));
+static void	 compress_mode __P((BITCMD *));
+#ifdef SETMODE_DEBUG
+static void	 dumpmode __P((BITCMD *));
+#endif
+
+/*
+ * Given the old mode and an array of bitcmd structures, apply the operations
+ * described in the bitcmd structures to the old mode, and return the new mode.
+ * Note that there is no '=' command; a strict assignment is just a '-' (clear
+ * bits) followed by a '+' (set bits).
+ */
+mode_t
+getmode(bbox, omode)
+	void *bbox;
+	mode_t omode;
+{
+	register BITCMD *set;
+	register mode_t clrval, newmode, value;
+
+	set = (BITCMD *)bbox;
+	newmode = omode;
+	for (value = 0;; set++)
+		switch(set->cmd) {
+		/*
+		 * When copying the user, group or other bits around, we "know"
+		 * where the bits are in the mode so that we can do shifts to
+		 * copy them around.  If we don't use shifts, it gets real
+		 * grundgy with lots of single bit checks and bit sets.
+		 */
+		case 'u':
+			value = (newmode & S_IRWXU) >> 6;
+			goto common;
+
+		case 'g':
+			value = (newmode & S_IRWXG) >> 3;
+			goto common;
+
+		case 'o':
+			value = newmode & S_IRWXO;
+common:			if (set->cmd2 & CMD2_CLR) {
+				clrval =
+				    (set->cmd2 & CMD2_SET) ?  S_IRWXO : value;
+				if (set->cmd2 & CMD2_UBITS)
+					newmode &= ~((clrval<<6) & set->bits);
+				if (set->cmd2 & CMD2_GBITS)
+					newmode &= ~((clrval<<3) & set->bits);
+				if (set->cmd2 & CMD2_OBITS)
+					newmode &= ~(clrval & set->bits);
+			}
+			if (set->cmd2 & CMD2_SET) {
+				if (set->cmd2 & CMD2_UBITS)
+					newmode |= (value<<6) & set->bits;
+				if (set->cmd2 & CMD2_GBITS)
+					newmode |= (value<<3) & set->bits;
+				if (set->cmd2 & CMD2_OBITS)
+					newmode |= value & set->bits;
+			}
+			break;
+
+		case '+':
+			newmode |= set->bits;
+			break;
+
+		case '-':
+			newmode &= ~set->bits;
+			break;
+
+		case 'X':
+			if (omode & (S_IFDIR|S_IXUSR|S_IXGRP|S_IXOTH))
+				newmode |= set->bits;
+			break;
+
+		case '\0':
+		default:
+#ifdef SETMODE_DEBUG
+			(void)printf("getmode:%04o -> %04o\n", omode, newmode);
+#endif
+			return (newmode);
+		}
+}
+
+#define	ADDCMD(a, b, c, d)						\
+	if (set >= endset) {						\
+		register BITCMD *newset;				\
+		setlen += SET_LEN_INCR;					\
+		newset = realloc(saveset, sizeof(BITCMD) * setlen);	\
+		if (!saveset)						\
+			return (NULL);					\
+		set = newset + (set - saveset);				\
+		saveset = newset;					\
+		endset = newset + (setlen - 2);				\
+	}								\
+	set = addcmd(set, (a), (b), (c), (d))
+
+#define	STANDARD_BITS	(S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
+
+void *
+setmode(p)
+	register char *p;
+{
+	register int perm, who;
+	register char op;
+	BITCMD *set, *saveset, *endset;
+	sigset_t sigset, sigoset;
+	mode_t mask;
+	int equalopdone=0, permXbits, setlen;
+
+	if (!*p)
+		return (NULL);
+
+	/*
+	 * Get a copy of the mask for the permissions that are mask relative.
+	 * Flip the bits, we want what's not set.  Since it's possible that
+	 * the caller is opening files inside a signal handler, protect them
+	 * as best we can.
+	 */
+	sigfillset(&sigset);
+        (void)sigprocmask(SIG_BLOCK, &sigset, &sigoset);
+	(void)umask(mask = umask(0));
+	mask = ~mask;
+        (void)sigprocmask(SIG_SETMASK, &sigoset, NULL);
+
+	setlen = SET_LEN + 2;
+
+	if ((set = malloc((u_int)(sizeof(BITCMD) * setlen))) == NULL)
+		return (NULL);
+	saveset = set;
+	endset = set + (setlen - 2);
+
+	/*
+	 * If an absolute number, get it and return; disallow non-octal digits
+	 * or illegal bits.
+	 */
+	if (isdigit(*p)) {
+		perm = (mode_t)strtol(p, NULL, 8);
+		if (perm & ~(STANDARD_BITS|S_ISTXT)) {
+			free(saveset);
+			return (NULL);
+		}
+		while (*++p)
+			if (*p < '0' || *p > '7') {
+				free(saveset);
+				return (NULL);
+			}
+		ADDCMD('=', (STANDARD_BITS|S_ISTXT), perm, mask);
+		return (saveset);
+	}
+
+	/*
+	 * Build list of structures to set/clear/copy bits as described by
+	 * each clause of the symbolic mode.
+	 */
+	for (;;) {
+		/* First, find out which bits might be modified. */
+		for (who = 0;; ++p) {
+			switch (*p) {
+			case 'a':
+				who |= STANDARD_BITS;
+				break;
+			case 'u':
+				who |= S_ISUID|S_IRWXU;
+				break;
+			case 'g':
+				who |= S_ISGID|S_IRWXG;
+				break;
+			case 'o':
+				who |= S_IRWXO;
+				break;
+			default:
+				goto getop;
+			}
+		}
+
+getop:		if ((op = *p++) != '+' && op != '-' && op != '=') {
+			free(saveset);
+			return (NULL);
+		}
+		if (op == '=')
+			equalopdone = 0;
+
+		who &= ~S_ISTXT;
+		for (perm = 0, permXbits = 0;; ++p) {
+			switch (*p) {
+			case 'r':
+				perm |= S_IRUSR|S_IRGRP|S_IROTH;
+				break;
+			case 's':
+				/* If only "other" bits ignore set-id. */
+				if (who & ~S_IRWXO)
+					perm |= S_ISUID|S_ISGID;
+				break;
+			case 't':
+				/* If only "other" bits ignore sticky. */
+				if (who & ~S_IRWXO) {
+					who |= S_ISTXT;
+					perm |= S_ISTXT;
+				}
+				break;
+			case 'w':
+				perm |= S_IWUSR|S_IWGRP|S_IWOTH;
+				break;
+			case 'X':
+				permXbits = S_IXUSR|S_IXGRP|S_IXOTH;
+				break;
+			case 'x':
+				perm |= S_IXUSR|S_IXGRP|S_IXOTH;
+				break;
+			case 'u':
+			case 'g':
+			case 'o':
+				/*
+				 * When ever we hit 'u', 'g', or 'o', we have
+				 * to flush out any partial mode that we have,
+				 * and then do the copying of the mode bits.
+				 */
+				if (perm) {
+					ADDCMD(op, who, perm, mask);
+					perm = 0;
+				}
+				if (op == '=')
+					equalopdone = 1;
+				if (op == '+' && permXbits) {
+					ADDCMD('X', who, permXbits, mask);
+					permXbits = 0;
+				}
+				ADDCMD(*p, who, op, mask);
+				break;
+
+			default:
+				/*
+				 * Add any permissions that we haven't already
+				 * done.
+				 */
+				if (perm || (op == '=' && !equalopdone)) {
+					if (op == '=')
+						equalopdone = 1;
+					ADDCMD(op, who, perm, mask);
+					perm = 0;
+				}
+				if (permXbits) {
+					ADDCMD('X', who, permXbits, mask);
+					permXbits = 0;
+				}
+				goto apply;
+			}
+		}
+
+apply:		if (!*p)
+			break;
+		if (*p != ',')
+			goto getop;
+		++p;
+	}
+	set->cmd = 0;
+#ifdef SETMODE_DEBUG
+	(void)printf("Before compress_mode()\n");
+	dumpmode(saveset);
+#endif
+	compress_mode(saveset);
+#ifdef SETMODE_DEBUG
+	(void)printf("After compress_mode()\n");
+	dumpmode(saveset);
+#endif
+	return (saveset);
+}
+
+static BITCMD *
+addcmd(set, op, who, oparg, mask)
+	BITCMD *set;
+	register int oparg, who;
+	register int op;
+	u_int mask;
+{
+	switch (op) {
+	case '=':
+		set->cmd = '-';
+		set->bits = who ? who : STANDARD_BITS;
+		set++;
+
+		op = '+';
+		/* FALLTHROUGH */
+	case '+':
+	case '-':
+	case 'X':
+		set->cmd = op;
+		set->bits = (who ? who : mask) & oparg;
+		break;
+
+	case 'u':
+	case 'g':
+	case 'o':
+		set->cmd = op;
+		if (who) {
+			set->cmd2 = ((who & S_IRUSR) ? CMD2_UBITS : 0) |
+				    ((who & S_IRGRP) ? CMD2_GBITS : 0) |
+				    ((who & S_IROTH) ? CMD2_OBITS : 0);
+			set->bits = ~0;
+		} else {
+			set->cmd2 = CMD2_UBITS | CMD2_GBITS | CMD2_OBITS;
+			set->bits = mask;
+		}
+
+		if (oparg == '+')
+			set->cmd2 |= CMD2_SET;
+		else if (oparg == '-')
+			set->cmd2 |= CMD2_CLR;
+		else if (oparg == '=')
+			set->cmd2 |= CMD2_SET|CMD2_CLR;
+		break;
+	}
+	return (set + 1);
+}
+
+#ifdef SETMODE_DEBUG
+static void
+dumpmode(set)
+	register BITCMD *set;
+{
+	for (; set->cmd; ++set)
+		(void)printf("cmd: '%c' bits %04o%s%s%s%s%s%s\n",
+		    set->cmd, set->bits, set->cmd2 ? " cmd2:" : "",
+		    set->cmd2 & CMD2_CLR ? " CLR" : "",
+		    set->cmd2 & CMD2_SET ? " SET" : "",
+		    set->cmd2 & CMD2_UBITS ? " UBITS" : "",
+		    set->cmd2 & CMD2_GBITS ? " GBITS" : "",
+		    set->cmd2 & CMD2_OBITS ? " OBITS" : "");
+}
+#endif
+
+/*
+ * Given an array of bitcmd structures, compress by compacting consecutive
+ * '+', '-' and 'X' commands into at most 3 commands, one of each.  The 'u',
+ * 'g' and 'o' commands continue to be separate.  They could probably be
+ * compacted, but it's not worth the effort.
+ */
+static void
+compress_mode(set)
+	register BITCMD *set;
+{
+	register BITCMD *nset;
+	register int setbits, clrbits, Xbits, op;
+
+	for (nset = set;;) {
+		/* Copy over any 'u', 'g' and 'o' commands. */
+		while ((op = nset->cmd) != '+' && op != '-' && op != 'X') {
+			*set++ = *nset++;
+			if (!op)
+				return;
+		}
+
+		for (setbits = clrbits = Xbits = 0;; nset++) {
+			if ((op = nset->cmd) == '-') {
+				clrbits |= nset->bits;
+				setbits &= ~nset->bits;
+				Xbits &= ~nset->bits;
+			} else if (op == '+') {
+				setbits |= nset->bits;
+				clrbits &= ~nset->bits;
+				Xbits &= ~nset->bits;
+			} else if (op == 'X')
+				Xbits |= nset->bits & ~setbits;
+			else
+				break;
+		}
+		if (clrbits) {
+			set->cmd = '-';
+			set->cmd2 = 0;
+			set->bits = clrbits;
+			set++;
+		}
+		if (setbits) {
+			set->cmd = '+';
+			set->cmd2 = 0;
+			set->bits = setbits;
+			set++;
+		}
+		if (Xbits) {
+			set->cmd = 'X';
+			set->cmd2 = 0;
+			set->bits = Xbits;
+			set++;
+		}
+	}
+}
diff --git a/lib/libc/gen/setproctitle.3 b/lib/libc/gen/setproctitle.3
new file mode 100644
index 0000000..5eefe60
--- /dev/null
+++ b/lib/libc/gen/setproctitle.3
@@ -0,0 +1,111 @@
+.\" Copyright (c) 1995 Peter Wemm <peter@freebsd.org>
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, is permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice immediately at the beginning of the file, without modification,
+.\"    this list of conditions, and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. This work was done expressly for inclusion into FreeBSD.  Other use
+.\"    is permitted provided this notation is included.
+.\" 4. Absolutely no warranty of function or purpose is made by the author
+.\"    Peter Wemm.
+.\" 5. Modifications may be freely made to this file providing the above
+.\"    conditions are met.
+.\"
+.\" $Id: setproctitle.3,v 1.1 1995/12/26 22:50:08 peter Exp $
+.\"
+.\" The following requests are required for all man pages.
+.Dd December 16, 1995
+.Os FreeBSD
+.Dt SETPROCTITLE 3
+.Sh NAME
+.Nm setproctitle
+.Nd set the process title for
+.Xr ps 1
+.Sh SYNOPSIS
+#include <libutil.h>
+.Pp
+.Ft void
+.Fn setproctitle "const char *fmt" "..."
+.Pp
+Link with
+.Va -lutil
+on the
+.Xr cc 1
+command line.
+.Sh DESCRIPTION
+The
+.Nm setproctitle
+library routine sets the process title that appears on the
+.Xr ps 1
+command.
+.Pp
+The title is set from the executable's name, followed by the
+result of a
+.Xr printf 3
+style expansion of the arguments as specified by the
+.Va fmt
+argument.
+.Pp
+If
+.Va fmt
+is NULL, the process title is reset to simply the name of the executable.
+.\" The following requests should be uncommented and used where appropriate.
+.\" This next request is for sections 2 and 3 function return values only.
+.\" .Sh RETURN VALUES
+.\" This next request is for sections 1, 6, 7 & 8 only
+.\" .Sh ENVIRONMENT
+.\" .Sh FILES
+.Sh EXAMPLES
+To set the title on a daemon to indicate it's activity:
+.Bd -literal -offset indent
+setproctitle("talking to %s", inet_ntoa(addr));
+.Ed
+.\" This next request is for sections 1, 6, 7 & 8 only
+.\"     (command return values (to shell) and fprintf/stderr type diagnostics)
+.\" .Sh DIAGNOSTICS
+.\" The next request is for sections 2 and 3 error and signal handling only.
+.\" .Sh ERRORS
+.Sh SEE ALSO
+.Xr ps 1 ,
+.Xr w 1 ,
+.Xr kvm 3 ,
+.Xr kvm_getargv 3 ,
+.Xr printf 3
+.Sh STANDARDS
+.Nm setproctitle
+is implicitly non-standard.  Other methods of causing the
+.Xr ps 1
+command line to change, including copying over the argv[0] string are
+also implicitly non-portable.  It is preferable to use an operating system
+supplied
+.Nm setproctitle
+if present.
+.Pp
+Unfortunately, it is possible that there are other calling conventions
+to other versions of
+.Nm setproctitle ,
+although none have been found by the author as yet.  This is believed to be
+the predominant convention.
+.Pp
+It is thought that the implementation is compatable with other systems,
+including
+.Nm NetBSD
+and
+.Nm BSD/OS .
+.Sh HISTORY
+.Nm setproctitle
+first appeared in FreeBSD at version 2.2.  Other operating systems have
+similar functions.
+.Sh AUTHORS
+.Nm Peter Wemm <peter@FreeBSD.org>
+stole the idea from the
+.Nm Sendmail 8.7.3
+source code by
+.Nm Eric Allman <eric@sendmail.org> .
+.\" .Sh BUGS
diff --git a/lib/libc/gen/setproctitle.c b/lib/libc/gen/setproctitle.c
new file mode 100644
index 0000000..2faf976
--- /dev/null
+++ b/lib/libc/gen/setproctitle.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 1995 Peter Wemm <peter@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, is permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice immediately at the beginning of the file, without modification,
+ *    this list of conditions, and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. This work was done expressly for inclusion into FreeBSD.  Other use
+ *    is permitted provided this notation is included.
+ * 4. Absolutely no warranty of function or purpose is made by the author
+ *    Peter Wemm.
+ * 5. Modifications may be freely made to this file providing the above
+ *    conditions are met.
+ *
+ * $Id$
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/exec.h>
+
+#include <vm/vm.h>
+#include <vm/vm_param.h>
+#include <vm/pmap.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+/*
+ * Older FreeBSD 2.0, 2.1 and 2.2 had different ps_strings structures and
+ * in different locations.
+ * 1: old_ps_strings at the very top of the stack.
+ * 2: old_ps_strings at SPARE_USRSPACE below the top of the stack.
+ * 3: ps_strings at the very top of the stack.
+ * This attempts to support a kernel built in the #2 and #3 era.
+ */
+
+struct old_ps_strings {
+	char	*old_ps_argvstr;
+	int	old_ps_nargvstr;
+	char	*old_ps_envstr;
+	int	old_ps_nenvstr;
+};
+#define	OLD_PS_STRINGS ((struct old_ps_strings *) \
+	(USRSTACK - SPARE_USRSPACE - sizeof(struct old_ps_strings)))
+
+#if defined(__STDC__)		/* from other parts of sendmail */
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+
+#define SPT_BUFSIZE 2048	/* from other parts of sendmail */
+extern char * __progname;	/* is this defined in a .h anywhere? */
+
+void
+#if defined(__STDC__)
+setproctitle(const char *fmt, ...)
+#else
+setproctitle(fmt, va_alist)
+	const char *fmt;
+	va_dcl
+#endif
+{
+	char *p;
+	int len;
+	static char buf[SPT_BUFSIZE];
+	static char *ps_argv[2];
+	va_list ap;
+
+#if defined(__STDC__)
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+
+	buf[sizeof(buf) - 1] = '\0';
+	if (fmt) {
+
+		/* print program name heading for grep */
+		(void) snprintf(buf, sizeof(buf) - 1, "%s: ", __progname);
+
+		/*
+		 * can't use return from sprintf, as that is the count of how
+		 * much it wanted to write, not how much it actually did.
+		 */
+
+		len = strlen(buf);
+
+		/* print the argument string */
+		(void) vsnprintf(buf + len, sizeof(buf) - 1 - len, fmt, ap);
+	} else {
+		/* Idea from NetBSD - reset the title on fmt == NULL */
+		strncpy(buf, __progname, sizeof(buf) - 1);
+	}
+
+	va_end(ap);
+
+	/* PS_STRINGS points to zeroed memory on a style #2 kernel */
+	if (PS_STRINGS->ps_argvstr) {
+		/* style #3 */
+		ps_argv[0] = buf;
+		ps_argv[1] = NULL;
+		PS_STRINGS->ps_nargvstr = 1;
+		PS_STRINGS->ps_argvstr = ps_argv;
+	} else {
+		/* style #2 */
+		OLD_PS_STRINGS->old_ps_nargvstr = 1;
+		OLD_PS_STRINGS->old_ps_argvstr = buf;
+	}
+}
diff --git a/lib/libc/gen/shmat.c b/lib/libc/gen/shmat.c
new file mode 100644
index 0000000..b38a6a5
--- /dev/null
+++ b/lib/libc/gen/shmat.c
@@ -0,0 +1,19 @@
+#if defined(LIBC_SCCS) && !defined(lint)
+static char *rcsid = "$Id: shmat.c,v 1.2 1993/10/10 12:01:26 rgrimes Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+
+#if __STDC__
+void *shmat(int shmid, void *shmaddr, int shmflg)
+#else
+void *shmat(shmid, shmaddr, shmflg)
+	int shmid;
+	void *shmaddr;
+	int shmflg;
+#endif
+{
+	return ((void *)shmsys(0, shmid, shmaddr, shmflg));
+}
diff --git a/lib/libc/gen/shmctl.c b/lib/libc/gen/shmctl.c
new file mode 100644
index 0000000..1bb384c
--- /dev/null
+++ b/lib/libc/gen/shmctl.c
@@ -0,0 +1,19 @@
+#if defined(LIBC_SCCS) && !defined(lint)
+static char *rcsid = "$Id: shmctl.c,v 1.2 1993/10/10 12:01:28 rgrimes Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+
+#if __STDC__
+int shmctl(int shmid, int cmd, struct shmid_ds *buf)
+#else
+int shmctl(shmid, cmd, buf)
+	int shmid;
+	int cmd;
+	struct shmid_ds *buf;
+#endif
+{
+	return (shmsys(4, shmid, cmd, buf));
+}
diff --git a/lib/libc/gen/shmdt.c b/lib/libc/gen/shmdt.c
new file mode 100644
index 0000000..fde6078
--- /dev/null
+++ b/lib/libc/gen/shmdt.c
@@ -0,0 +1,17 @@
+#if defined(LIBC_SCCS) && !defined(lint)
+static char *rcsid = "$Id: shmdt.c,v 1.2 1993/10/10 12:01:29 rgrimes Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+
+#if __STDC__
+int shmdt(void *shmaddr)
+#else
+int shmdt(shmaddr)
+	void *shmaddr;
+#endif
+{
+	return (shmsys(2, shmaddr));
+}
diff --git a/lib/libc/gen/shmget.c b/lib/libc/gen/shmget.c
new file mode 100644
index 0000000..455ea88
--- /dev/null
+++ b/lib/libc/gen/shmget.c
@@ -0,0 +1,19 @@
+#if defined(LIBC_SCCS) && !defined(lint)
+static char *rcsid = "$Id: shmget.c,v 1.1 1993/09/27 00:57:49 rgrimes Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+
+#if __STDC__
+int shmget(key_t key, int size, int shmflg)
+#else
+int shmget(key, size, shmflg)
+	key_t key;
+	int size;
+	int shmflg;
+#endif
+{
+	return (shmsys(3, key, size, shmflg));
+}
diff --git a/lib/libc/gen/siginterrupt.3 b/lib/libc/gen/siginterrupt.3
new file mode 100644
index 0000000..1dadb28
--- /dev/null
+++ b/lib/libc/gen/siginterrupt.3
@@ -0,0 +1,106 @@
+.\" Copyright (c) 1985, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)siginterrupt.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SIGINTERRUPT 3
+.Os BSD 4.3
+.Sh NAME
+.Nm siginterrupt
+.Nd allow signals to interrupt system calls
+.Sh SYNOPSIS
+.Fd #include <signal.h>
+.Ft int
+.Fn siginterrupt "int sig" "int flag"
+.Sh DESCRIPTION
+The
+.Fn siginterrupt
+function
+is used to change the system call restart
+behavior when a system call is interrupted by the specified signal.
+If the flag is false (0), then system calls will be restarted if
+they are interrupted by the specified signal
+and no data has been transferred yet.
+System call restart is the default behavior on
+.Bx 4.2 .
+.Pp
+If the flag is true (1),
+then restarting of system calls is disabled.
+If a system call is interrupted by the specified signal
+and no data has been transferred,
+the system call will return \-1 with the global variable
+.Va errno
+set to
+.Dv EINTR . 
+Interrupted system calls that have started transferring
+data will return the amount of data actually transferred.
+System call interrupt is the signal behavior found on
+.Bx 4.1
+and
+.At V
+systems.
+.Pp
+Note that the new
+.Bx 4.2
+signal handling semantics are not
+altered in any other way.
+Most notably, signal handlers always remain installed until
+explicitly changed by a subsequent
+.Xr sigaction 2
+call, and the signal mask operates as documented in
+.Xr sigaction 2 .
+Programs may switch between restartable and interruptible
+system call operation as often as desired in the execution of a program.
+.Pp
+Issuing a
+.Fn siginterrupt 3
+call during the execution of a signal handler will cause
+the new action to take place on the next signal to be caught.
+.Sh NOTES
+This library routine uses an extension of the
+.Xr sigaction 2
+system call that is not available in
+.Bx 4.2 ,
+hence it should not be used if backward compatibility is needed.
+.Sh RETURN VALUES
+A 0 value indicates that the call succeeded.
+A \-1 value indicates that an invalid signal number has been supplied.
+.Sh SEE ALSO
+.Xr sigaction 2 ,
+.Xr sigblock 2 ,
+.Xr sigpause 2 ,
+.Xr sigsetmask 2 .
+.Sh HISTORY
+The
+.Fn siginterrupt
+function appeared in 
+.Bx 4.3 .
diff --git a/lib/libc/gen/siginterrupt.c b/lib/libc/gen/siginterrupt.c
new file mode 100644
index 0000000..3105d13
--- /dev/null
+++ b/lib/libc/gen/siginterrupt.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)siginterrupt.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <signal.h>
+
+/*
+ * Set signal state to prevent restart of system calls
+ * after an instance of the indicated signal.
+ */
+siginterrupt(sig, flag)
+	int sig, flag;
+{
+	extern sigset_t _sigintr;
+	struct sigaction sa;
+	int ret;
+
+	if ((ret = sigaction(sig, (struct sigaction *)0, &sa)) < 0)
+		return (ret);
+	if (flag) {
+		sigaddset(&_sigintr, sig);
+		sa.sa_flags &= ~SA_RESTART;
+	} else {
+		sigdelset(&_sigintr, sig);
+		sa.sa_flags |= SA_RESTART;
+	}
+	return (sigaction(sig, &sa, (struct sigaction *)0));
+}
diff --git a/lib/libc/gen/siglist.c b/lib/libc/gen/siglist.c
new file mode 100644
index 0000000..be6334d
--- /dev/null
+++ b/lib/libc/gen/siglist.c
@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)siglist.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <signal.h>
+
+const char *const sys_signame[NSIG] = {
+	"Signal 0",
+	"hup",				/* SIGHUP */
+	"int",				/* SIGINT */
+	"quit",				/* SIGQUIT */
+	"ill",				/* SIGILL */
+	"trap",				/* SIGTRAP */
+	"abrt",				/* SIGABRT */
+	"emt",				/* SIGEMT */
+	"fpe",				/* SIGFPE */
+	"kill",				/* SIGKILL */
+	"bus",				/* SIGBUS */
+	"segv",				/* SIGSEGV */
+	"sys",				/* SIGSYS */
+	"pipe",				/* SIGPIPE */
+	"alrm",				/* SIGALRM */
+	"term",				/* SIGTERM */
+	"urg",				/* SIGURG */
+	"stop",				/* SIGSTOP */
+	"tstp",				/* SIGTSTP */
+	"cont",				/* SIGCONT */
+	"chld",				/* SIGCHLD */
+	"ttin",				/* SIGTTIN */
+	"ttou",				/* SIGTTOU */
+	"io",				/* SIGIO */
+	"xcpu",				/* SIGXCPU */
+	"xfsz",				/* SIGXFSZ */
+	"vtalrm",			/* SIGVTALRM */
+	"prof",				/* SIGPROF */
+	"winch",			/* SIGWINCH */
+	"info",				/* SIGINFO */
+	"usr1",				/* SIGUSR1 */
+	"usr2",				/* SIGUSR2 */
+};
+
+const char *const sys_siglist[NSIG] = {
+	"Signal 0",
+	"Hangup",			/* SIGHUP */
+	"Interrupt",			/* SIGINT */
+	"Quit",				/* SIGQUIT */
+	"Illegal instruction",		/* SIGILL */
+	"Trace/BPT trap",		/* SIGTRAP */
+	"Abort trap",			/* SIGABRT */
+	"EMT trap",			/* SIGEMT */
+	"Floating point exception",	/* SIGFPE */
+	"Killed",			/* SIGKILL */
+	"Bus error",			/* SIGBUS */
+	"Segmentation fault",		/* SIGSEGV */
+	"Bad system call",		/* SIGSYS */
+	"Broken pipe",			/* SIGPIPE */
+	"Alarm clock",			/* SIGALRM */
+	"Terminated",			/* SIGTERM */
+	"Urgent I/O condition",		/* SIGURG */
+	"Suspended (signal)",		/* SIGSTOP */
+	"Suspended",			/* SIGTSTP */
+	"Continued",			/* SIGCONT */
+	"Child exited",			/* SIGCHLD */
+	"Stopped (tty input)",		/* SIGTTIN */
+	"Stopped (tty output)",		/* SIGTTOU */
+	"I/O possible",			/* SIGIO */
+	"Cputime limit exceeded",	/* SIGXCPU */
+	"Filesize limit exceeded",	/* SIGXFSZ */
+	"Virtual timer expired",	/* SIGVTALRM */
+	"Profiling timer expired",	/* SIGPROF */
+	"Window size changes",		/* SIGWINCH */
+	"Information request",		/* SIGINFO */
+	"User defined signal 1",	/* SIGUSR1 */
+	"User defined signal 2"		/* SIGUSR2 */
+};
diff --git a/lib/libc/gen/signal.3 b/lib/libc/gen/signal.3
new file mode 100644
index 0000000..86189f1
--- /dev/null
+++ b/lib/libc/gen/signal.3
@@ -0,0 +1,222 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)signal.3	8.3 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt SIGNAL 3
+.Os BSD 4
+.Sh NAME
+.Nm signal
+.Nd simplified software signal facilities
+.Sh SYNOPSIS
+.Fd #include <signal.h>
+.Ft void \*(lp*
+.Fn signal "int sig" "void \*(lp*func\*(rp\*(lpint\*(rp\*(rp\*(rp\*(lpint"
+
+or in FreeBSD's equivalent but easier to read typedef'd version:
+.Ft typedef "void \*(lp*sig_t\*(rp \*(lpint\*(rp"
+.Ft sig_t 
+.Fn signal "int sig" "sig_t func"
+.Sh DESCRIPTION
+This
+.Fn signal
+facility
+is a simplified interface to the more general
+.Xr sigaction 2
+facility.
+.Pp
+Signals allow the manipulation of a process from outside its
+domain as well as allowing the process to manipulate itself or
+copies of itself (children). There are two general types of signals:
+those that cause termination of a process and those that do not.
+Signals which cause termination of a program might result from
+an irrecoverable error or might be the result of a user at a terminal
+typing the `interrupt' character.
+Signals are used when a process is stopped because it wishes to access
+its control terminal while in the background (see
+.Xr tty 4 ) .
+Signals are optionally generated
+when a process resumes after being stopped,
+when the status of child processes changes,
+or when input is ready at the control terminal.
+Most signals result in the termination of the process receiving them
+if no action
+is taken; some signals instead cause the process receiving them
+to be stopped, or are simply discarded if the process has not
+requested otherwise.
+Except for the
+.Dv SIGKILL
+and
+.Dv SIGSTOP
+signals, the
+.Fn signal
+function allows for a signal to be caught, to be ignored, or to generate
+an interrupt.
+These signals are defined in the file
+.Aq Pa signal.h :
+.Bl -column SIGVTALARMXX "create core imagexxx"
+.It Sy "  Name  " "	  Default Action  " "	              Description"
+.It Dv SIGHUP No "	terminate process" "	terminal line hangup"
+.It Dv SIGINT No "	terminate process" "	interrupt program"
+.It Dv SIGQUIT No "	create core image" "	quit program"
+.It Dv SIGILL No "	create core image" "	illegal instruction"
+.It Dv SIGTRAP No "	create core image" "	trace trap"
+.It Dv SIGABRT No "	create core image" Xr 	abort 2
+call (formerly
+.Dv SIGIOT )
+.It Dv SIGEMT No "	create core image" "	emulate instruction executed"
+.It Dv SIGFPE No "	create core image" "	floating-point exception"
+.It Dv SIGKILL No "	terminate process" "	kill program"
+.It Dv SIGBUS No "	create core image" "	bus error"
+.It Dv SIGSEGV No "	create core image" "	segmentation violation"
+.It Dv SIGSYS No "	create core image" "	system call given invalid argument"
+.It Dv SIGPIPE No "	terminate process" "	write on a pipe with no reader"
+.It Dv SIGALRM No "	terminate process" "	real-time timer expired"
+.It Dv SIGTERM No "	terminate process" "	software termination signal"
+.It Dv SIGURG No "	discard signal" "	urgent condition present on socket"
+.It Dv SIGSTOP No "	stop process" "	stop (cannot be caught or ignored)"
+.It Dv SIGTSTP No "	stop process" "	stop signal generated from keyboard"
+.It Dv SIGCONT No "	discard signal" "	continue after stop"
+.It Dv SIGCHLD No "	discard signal" "	child status has changed"
+.It Dv SIGTTIN No "	stop process" "	background read attempted from control terminal"
+.It Dv SIGTTOU No "	stop process" "	background write attempted to control terminal"
+.It Dv SIGIO No "	discard signal" Tn "	I/O"
+is possible on a descriptor (see
+.Xr fcntl 2 )
+.It Dv SIGXCPU No "	terminate process" "	cpu time limit exceeded (see"
+.Xr setrlimit 2 )
+.It Dv SIGXFSZ No "	terminate process" "	file size limit exceeded (see"
+.Xr setrlimit 2 )
+.It Dv SIGVTALRM No "	terminate process" "	virtual time alarm (see"
+.Xr setitimer 2 )
+.It Dv SIGPROF No "	terminate process" "	profiling timer alarm (see"
+.Xr setitimer 2 )
+.It Dv SIGWINCH No "	discard signal" "	Window size change"
+.It Dv SIGINFO No "	discard signal" "	status request from keyboard"
+.It Dv SIGUSR1 No "	terminate process" "	User defined signal 1"
+.It Dv SIGUSR2 No "	terminate process" "	User defined signal 2"
+.El
+.Pp
+The
+.Fa func
+procedure allows a user to choose the action upon receipt of a signal.
+To set the default action of the signal to occur as listed above,
+.Fa func
+should be
+.Dv SIG_DFL .
+A
+.Dv SIG_DFL
+resets the default action.
+To ignore the signal
+.Fa func
+should be
+.Dv SIG_IGN .
+This will cause subsequent instances of the signal to be ignored
+and pending instances to be discarded. If
+.Dv SIG_IGN
+is not used,
+further occurrences of the signal are
+automatically blocked and
+.Fa func
+is called.
+.Pp
+The handled signal is unblocked with the
+function returns and
+the process continues from where it left off when the signal occurred.
+.Bf -symbolic
+Unlike previous signal facilities, the handler
+func() remains installed after a signal has been delivered.
+.Ef
+.Pp
+For some system calls, if a signal is caught while the call is
+executing and the call is prematurely terminated,
+the call is automatically restarted.
+(The handler is installed using the
+.Dv SA_RESTART
+flag with
+.Xr sigaction 2 . )
+The affected system calls include
+.Xr read 2 ,
+.Xr write 2 ,
+.Xr sendto 2 ,
+.Xr recvfrom 2 ,
+.Xr sendmsg 2
+and
+.Xr recvmsg 2
+on a communications channel or a low speed device
+and during a
+.Xr ioctl 2
+or
+.Xr wait 2 .
+However, calls that have already committed are not restarted,
+but instead return a partial success (for example, a short read count).
+.Pp
+When a process which has installed signal handlers forks,
+the child process inherits the signals.
+All caught signals may be reset to their default action by a call
+to the
+.Xr execve 2
+function;
+ignored signals remain ignored.
+.Sh RETURN VALUES
+The previous action is returned on a successful call.
+Otherwise, \-1 is returned and  the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Xr Signal
+will fail and no action will take place if one of the
+following occur:
+.Bl -tag -width [EINVAL]
+.It Bq Er EINVAL
+.Em Sig
+is not a valid signal number.
+.It Bq Er EINVAL
+An attempt is made to ignore or supply a handler for
+.Dv SIGKILL
+or
+.Ev SIGSTOP .
+.Sh SEE ALSO
+.Xr kill 1 ,
+.Xr ptrace 2 ,
+.Xr kill 2 ,
+.Xr sigaction 2 ,
+.Xr sigaltstack 2 ,
+.Xr sigprocmask 2 ,
+.Xr sigsuspend 2 ,
+.Xr setjmp 3 ,
+.Xr tty 4
+.Sh HISTORY
+This
+.Nm signal
+facility appeared in 
+.Bx 4.0 .
diff --git a/lib/libc/gen/signal.c b/lib/libc/gen/signal.c
new file mode 100644
index 0000000..c4057f5
--- /dev/null
+++ b/lib/libc/gen/signal.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 1985, 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)signal.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Almost backwards compatible signal.
+ */
+#include <signal.h>
+
+sigset_t _sigintr;		/* shared with siginterrupt */
+
+sig_t
+signal(s, a)
+	int s;
+	sig_t a;
+{
+	struct sigaction sa, osa;
+
+	sa.sa_handler = a;
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = 0;
+	if (!sigismember(&_sigintr, s))
+		sa.sa_flags |= SA_RESTART;
+	if (sigaction(s, &sa, &osa) < 0)
+		return (SIG_ERR);
+	return (osa.sa_handler);
+}
diff --git a/lib/libc/gen/sigsetops.3 b/lib/libc/gen/sigsetops.3
new file mode 100644
index 0000000..b62253e
--- /dev/null
+++ b/lib/libc/gen/sigsetops.3
@@ -0,0 +1,108 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)sigsetops.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SIGSETOPS 3
+.Os
+.Sh NAME
+.Nm sigemptyset ,
+.Nm sigfillset ,
+.Nm sigaddset ,
+.Nm sigdelset ,
+.Nm sigismember
+.Nd manipulate signal sets
+.Sh SYNOPSIS
+.Fd #include <signal.h>
+.Fn sigemptyset "sigset_t *set"
+.Fn sigfillset "sigset_t *set"
+.Fn sigaddset "sigset_t *set" "int signo"
+.Fn sigdelset "sigset_t *set" "int signo"
+.Fn sigismember "sigset_t *set" "int signo"
+.Sh DESCRIPTION
+These functions manipulate signal sets stored in a
+.Fa sigset_t .
+Either
+.Fn sigemptyset
+or
+.Fn sigfillset
+must be called for every object of type
+.Fa sigset_t
+before any other use of the object.
+.Pp
+The
+.Fn sigemptyset
+function initializes a signal set to be empty.
+.Pp
+The
+.Fn sigfillset
+function initializes a signal set to contain all signals.
+.Pp
+The
+.Fn sigaddset
+function adds the specified signal
+.Fa signo
+to the signal set.
+.Pp
+The
+.Fn sigdelset
+function deletes the specified signal
+.Fa signo
+from the signal set.
+.Pp
+The
+.Fn sigismember
+function returns whether a specified signal
+.Fa signo
+is contained in the signal set.
+.Pp
+These functions
+are provided as macros in the include file <signal.h>.
+Actual functions are available
+if their names are undefined (with #undef
+.Em name ) .
+.Sh RETURN VALUES
+The
+.Fn sigismember
+function returns 1
+if the signal is a member of the set,
+0 otherwise.
+The other functions return 0.
+.Sh ERRORS
+Currently no errors are detected.
+.Sh SEE ALSO
+.Xr kill 2 ,
+.Xr sigaction 2 ,
+.Xr sigsuspend 2
+.Sh STANDARDS
+These functions are defined by
+.St -p1003.1-88 .
diff --git a/lib/libc/gen/sigsetops.c b/lib/libc/gen/sigsetops.c
new file mode 100644
index 0000000..e6acb77
--- /dev/null
+++ b/lib/libc/gen/sigsetops.c
@@ -0,0 +1,83 @@
+/*-
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)sigsetops.c	8.1 (Berkeley) 6/4/93
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)sigsetops.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <signal.h>
+
+#undef sigemptyset
+#undef sigfillset
+#undef sigaddset
+#undef sigdelset
+#undef sigismember
+
+sigemptyset(set)
+	sigset_t *set;
+{
+	*set = 0;
+	return (0);
+}
+
+sigfillset(set)
+	sigset_t *set;
+{
+	*set = ~(sigset_t)0;
+	return (0);
+}
+
+sigaddset(set, signo)
+	sigset_t *set;
+	int signo;
+{
+	*set |= sigmask(signo);
+	return (0);
+}
+
+sigdelset(set, signo)
+	sigset_t *set;
+	int signo;
+{
+	*set &= ~sigmask(signo);
+	return (0);
+}
+
+sigismember(set, signo)
+	const sigset_t *set;
+	int signo;
+{
+	return ((*set & ~sigmask(signo)) != 0);
+}
diff --git a/lib/libc/gen/sleep.3 b/lib/libc/gen/sleep.3
new file mode 100644
index 0000000..9e3c797
--- /dev/null
+++ b/lib/libc/gen/sleep.3
@@ -0,0 +1,83 @@
+.\" Copyright (c) 1986, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)sleep.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SLEEP 3
+.Os
+.Sh NAME
+.Nm sleep
+.Nd suspend process execution for interval of seconds
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft u_int
+.Fn sleep "u_int seconds"
+.Sh DESCRIPTION
+The
+.Fn sleep
+function
+suspends execution of the calling process
+for
+.Fa seconds
+of time.
+System activity or time spent in processing the
+call may lengthen the sleep by a second.
+.Pp
+If a timer is already running on the process its state is saved.
+If the value
+.Fa seconds
+is more than or equal to the remaining clock time for the saved timer,
+the sleep time is set to
+the remaining clock time.
+The state of the previous timer
+is restored after
+.Fa seconds
+has passed.
+.Pp
+This function is implemented using
+.Xr setitimer 2 ;
+it requires eight system calls each time it is invoked.
+A similar but less compatible function can be obtained with a single
+.Xr select 2 ;
+such a function would not restart after signals, but would not interfere
+with other uses of
+.Xr setitimer .
+.Sh RETURN VALUES
+.Sh SEE ALSO
+.Xr setitimer 2 ,
+.Xr sigpause 2 ,
+.Xr usleep 3
+.Sh HISTORY
+A
+.Fn sleep
+function appeared in
+.At v7 .
diff --git a/lib/libc/gen/sleep.c b/lib/libc/gen/sleep.c
new file mode 100644
index 0000000..98d997d
--- /dev/null
+++ b/lib/libc/gen/sleep.c
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)sleep.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/time.h>
+#include <signal.h>
+#include <unistd.h>
+
+#define	setvec(vec, a) \
+	vec.sv_handler = a; vec.sv_mask = vec.sv_onstack = 0
+
+static int ringring;
+
+unsigned int
+sleep(seconds)
+	unsigned int seconds;
+{
+	register struct itimerval *itp;
+	struct itimerval itv, oitv;
+	struct sigvec vec, ovec;
+	long omask;
+	static void sleephandler();
+
+	itp = &itv;
+	if (!seconds)
+		return 0;
+	timerclear(&itp->it_interval);
+	timerclear(&itp->it_value);
+	if (setitimer(ITIMER_REAL, itp, &oitv) < 0)
+		return seconds;
+	itp->it_value.tv_sec = seconds;
+	if (timerisset(&oitv.it_value)) {
+		if (timercmp(&oitv.it_value, &itp->it_value, >))
+			oitv.it_value.tv_sec -= itp->it_value.tv_sec;
+		else {
+			itp->it_value = oitv.it_value;
+			/*
+			 * This is a hack, but we must have time to return
+			 * from the setitimer after the alarm or else it'll
+			 * be restarted.  And, anyway, sleep never did
+			 * anything more than this before.
+			 */
+			oitv.it_value.tv_sec = 1;
+			oitv.it_value.tv_usec = 0;
+		}
+	}
+	setvec(vec, sleephandler);
+	(void) sigvec(SIGALRM, &vec, &ovec);
+	omask = sigblock(sigmask(SIGALRM));
+	ringring = 0;
+	(void) setitimer(ITIMER_REAL, itp, (struct itimerval *)0);
+	while (!ringring)
+		sigpause(omask &~ sigmask(SIGALRM));
+	(void) sigvec(SIGALRM, &ovec, (struct sigvec *)0);
+	(void) sigsetmask(omask);
+	(void) setitimer(ITIMER_REAL, &oitv, (struct itimerval *)0);
+	return 0;
+}
+
+static void
+sleephandler()
+{
+	ringring = 1;
+}
diff --git a/lib/libc/gen/srand48.c b/lib/libc/gen/srand48.c
new file mode 100644
index 0000000..fd369a0
--- /dev/null
+++ b/lib/libc/gen/srand48.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 1993 Martin Birgmeier
+ * All rights reserved.
+ *
+ * You may redistribute unmodified or modified versions of this source
+ * code provided that the above copyright notice and this and the
+ * following conditions are retained.
+ *
+ * This software is provided ``as is'', and comes with no warranties
+ * of any kind. I shall in no event be liable for anything that happens
+ * to anyone/anything when using this software.
+ */
+
+#include "rand48.h"
+
+extern unsigned short _rand48_seed[3];
+extern unsigned short _rand48_mult[3];
+extern unsigned short _rand48_add;
+
+void
+srand48(long seed)
+{
+	_rand48_seed[0] = RAND48_SEED_0;
+	_rand48_seed[1] = (unsigned short) seed;
+	_rand48_seed[2] = (unsigned short) (seed >> 16);
+	_rand48_mult[0] = RAND48_MULT_0;
+	_rand48_mult[1] = RAND48_MULT_1;
+	_rand48_mult[2] = RAND48_MULT_2;
+	_rand48_add = RAND48_ADD;
+}
diff --git a/lib/libc/gen/strtofflags.c b/lib/libc/gen/strtofflags.c
new file mode 100644
index 0000000..d62a0fd
--- /dev/null
+++ b/lib/libc/gen/strtofflags.c
@@ -0,0 +1,150 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)stat_flags.c	8.1 (Berkeley) 5/31/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <stddef.h>
+#include <string.h>
+
+#define	SAPPEND(s) {							\
+	if (prefix != NULL)						\
+		(void)strcat(string, prefix);				\
+	(void)strcat(string, s);					\
+	prefix = ",";							\
+}
+
+/*
+ * flags_to_string --
+ *	Convert stat flags to a comma-separated string.  If no flags
+ *	are set, return the default string.
+ */
+char *
+flags_to_string(flags, def)
+	u_long flags;
+	char *def;
+{
+	static char string[128];
+	char *prefix;
+
+	string[0] = '\0';
+	prefix = NULL;
+	if (flags & UF_APPEND)
+		SAPPEND("uappnd");
+	if (flags & UF_IMMUTABLE)
+		SAPPEND("uchg");
+	if (flags & UF_NODUMP)
+		SAPPEND("nodump");
+	if (flags & SF_APPEND)
+		SAPPEND("sappnd");
+	if (flags & SF_ARCHIVED)
+		SAPPEND("arch");
+	if (flags & SF_IMMUTABLE)
+		SAPPEND("schg");
+	return (prefix == NULL && def != NULL ? def : string);
+}
+
+#define	TEST(a, b, f) {							\
+	if (!memcmp(a, b, sizeof(b))) {					\
+		if (clear) {						\
+			if (clrp)					\
+				*clrp |= (f);				\
+		} else if (setp)					\
+			*setp |= (f);					\
+		break;							\
+	}								\
+}
+
+/*
+ * string_to_flags --
+ *	Take string of arguments and return stat flags.  Return 0 on
+ *	success, 1 on failure.  On failure, stringp is set to point
+ *	to the offending token.
+ */
+int
+string_to_flags(stringp, setp, clrp)
+	char **stringp;
+	u_long *setp, *clrp;
+{
+	int clear;
+	char *string, *p;
+
+	clear = 0;
+	if (setp)
+		*setp = 0;
+	if (clrp)
+		*clrp = 0;
+	string = *stringp;
+	while ((p = strsep(&string, "\t ,")) != NULL) {
+		*stringp = p;
+		if (*p == '\0')
+			continue;
+		if (p[0] == 'n' && p[1] == 'o') {
+			clear = 1;
+			p += 2;
+		}
+		switch (p[0]) {
+		case 'a':
+			TEST(p, "arch", SF_ARCHIVED);
+			TEST(p, "archived", SF_ARCHIVED);
+			return (1);
+		case 'd':
+			clear = !clear;
+			TEST(p, "dump", UF_NODUMP);
+			return (1);
+		case 's':
+			TEST(p, "sappnd", SF_APPEND);
+			TEST(p, "sappend", SF_APPEND);
+			TEST(p, "schg", SF_IMMUTABLE);
+			TEST(p, "schange", SF_IMMUTABLE);
+			TEST(p, "simmutable", SF_IMMUTABLE);
+			return (1);
+		case 'u':
+			TEST(p, "uappnd", UF_APPEND);
+			TEST(p, "uappend", UF_APPEND);
+			TEST(p, "uchg", UF_IMMUTABLE);
+			TEST(p, "uchange", UF_IMMUTABLE);
+			TEST(p, "uimmutable", UF_IMMUTABLE);
+			/* FALLTHROUGH */
+		default:
+			return (1);
+		}
+	}
+	return (0);
+}
diff --git a/lib/libc/gen/sysconf.3 b/lib/libc/gen/sysconf.3
new file mode 100644
index 0000000..53622f6
--- /dev/null
+++ b/lib/libc/gen/sysconf.3
@@ -0,0 +1,184 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)sysconf.3	8.3 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt SYSCONF 3
+.Os BSD 4
+.Sh NAME
+.Nm sysconf
+.Nd get configurable system variables
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft long
+.Fn sysconf "int name"
+.Sh DESCRIPTION
+.Pp
+This interface is defined by
+.St -p1003.1-88 .
+A far more complete interface is available using
+.Xr sysctl 3 .
+.Pp
+The
+.Fn sysconf
+function provides a method for applications to determine the current
+value of a configurable system limit or option variable.
+The
+.Fa name
+argument specifies the system variable to be queried.
+Symbolic constants for each name value are found in the include file
+.Li <unistd.h> .
+.Pp
+The available values are as follows:
+.Pp
+.Bl -tag -width "123456"
+.Pp
+.It Li _SC_ARG_MAX
+The maximum bytes of argument to
+.Xr exec 2 .
+.It Li _SC_CHILD_MAX
+The maximum number of simultaneous processes per user id.
+.It Li _SC_CLK_TCK
+Number of micro-seconds per hz tick.
+.It Li _SC_NGROUPS_MAX
+The maximum number of supplemental groups.
+.It Li _SC_OPEN_MAX
+The maximum number of open files per user id.
+.It Li _SC_STREAM_MAX
+The minimum maximum number of streams that a process may have open
+at any one time.
+.It Li _SC_TZNAME_MAX
+The minimum maximum number of types supported for the name of a
+timezone.
+.It Li _SC_JOB_CONTROL
+Return 1 if job control is available on this system, otherwise \-1.
+.It Li _SC_SAVED_IDS
+Returns 1 if saved set-group and saved set-user ID is available,
+otherwise \-1.
+.It Li _SC_VERSION
+The version of ISO/IEC 9945 (POSIX 1003.1) with which the system
+attempts to comply.
+.It Li _SC_BC_BASE_MAX
+The maximum ibase/obase values in the
+.Xr bc 1
+utility.
+.It Li _SC_BC_DIM_MAX
+The maximum array size in the
+.Xr bc 1
+utility.
+.It Li _SC_BC_SCALE_MAX
+The maximum scale value in the
+.Xr bc 1
+utility.
+.It Li _SC_BC_STRING_MAX
+The maximum string length in the
+.Xr bc 1
+utility.
+.It Li _SC_COLL_WEIGHTS_MAX
+The maximum number of weights that can be assigned to any entry of
+the LC_COLLATE order keyword in the locale definition file.
+.It Li _SC_EXPR_NEST_MAX
+The maximum number of expressions that can be nested within
+parenthesis by the
+.Xr expr 1
+utility.
+.It Li _SC_LINE_MAX
+The maximum length in bytes of a text-processing utility's input
+line.
+.It Li _SC_RE_DUP_MAX
+The maximum number of repeated occurrences of a regular expression
+permitted when using interval notation.
+.It Li _SC_2_VERSION
+The version of POSIX 1003.2 with which the system attempts to comply.
+.It Li _SC_2_C_BIND	
+Return 1 if the system's C-language development facilities support the
+C-Language Bindings Option, otherwise \-1.
+.It Li _SC_2_C_DEV
+Return 1 if the system supports the C-Language Development Utilities Option,
+otherwise \-1.
+.It Li _SC_2_CHAR_TERM
+Return 1 if the system supports at least one terminal type capable of
+all operations described in POSIX 1003.2, otherwise \-1.
+.It Li _SC_2_FORT_DEV
+Return 1 if the system supports the FORTRAN Development Utilities Option,
+otherwise \-1.
+.It Li _SC_2_FORT_RUN
+Return 1 if the system supports the FORTRAN Runtime Utilities Option,
+otherwise \-1.
+.It Li _SC_2_LOCALEDEF
+Return 1 if the system supports the creation of locales, otherwise \-1.
+.It Li _SC_2_SW_DEV
+Return 1 if the system supports the Software Development Utilities Option,
+otherwise \-1.
+.It Li _SC_2_UPE
+Return 1 if the system supports the User Portability Utilities Option,
+otherwise \-1.
+.El
+.Sh RETURN VALUES
+If the call to
+.Nm sysconf
+is not successful, \-1 is returned and
+.Va errno
+is set appropriately.
+Otherwise, if the variable is associated with functionality that is not
+supported, \-1 is returned and
+.Va errno
+is not modified.
+Otherwise, the current variable value is returned.
+.Sh ERRORS
+The
+.Fn sysconf
+function may fail and set
+.Va errno
+for any of the errors specified for the library functions
+.Xr sysctl 3 .
+In addition, the following error may be reported:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value of the
+.Fa name
+argument is invalid.
+.Sh SEE ALSO
+.Xr sysctl 3
+.Sh BUGS
+The value for _SC_STREAM_MAX is a minimum maximum, and required to be
+the same as ANSI C's FOPEN_MAX, so the returned value is a ridiculously
+small and misleading number.
+.Sh STANDARDS
+The
+.Fn sysconf
+function conforms to
+.St -p1003.1-88 .
+.Sh HISTORY
+The
+.Nm sysconf
+function first appeared in 4.4BSD.
diff --git a/lib/libc/gen/sysconf.c b/lib/libc/gen/sysconf.c
new file mode 100644
index 0000000..16a3efa
--- /dev/null
+++ b/lib/libc/gen/sysconf.c
@@ -0,0 +1,188 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Sean Eric Fagan of Cygnus Support.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)sysconf.c	8.2 (Berkeley) 3/20/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/sysctl.h>
+#include <sys/resource.h>
+
+#include <errno.h>
+#include <time.h>
+#include <unistd.h>
+
+/*
+ * sysconf --
+ *	get configurable system variables.
+ *
+ * XXX
+ * POSIX 1003.1 (ISO/IEC 9945-1, 4.8.1.3) states that the variable values
+ * not change during the lifetime of the calling process.  This would seem
+ * to require that any change to system limits kill all running processes.
+ * A workaround might be to cache the values when they are first retrieved
+ * and then simply return the cached value on subsequent calls.  This is
+ * less useful than returning up-to-date values, however.
+ */
+long
+sysconf(name)
+	int name;
+{
+	struct rlimit rl;
+	size_t len;
+	int mib[2], value;
+
+	len = sizeof(value);
+
+	switch (name) {
+/* 1003.1 */
+	case _SC_ARG_MAX:
+		mib[0] = CTL_KERN;
+		mib[1] = KERN_ARGMAX;
+		break;
+	case _SC_CHILD_MAX:
+		return (getrlimit(RLIMIT_NPROC, &rl) ? -1 : rl.rlim_cur);
+	case _SC_CLK_TCK:
+		return (CLK_TCK);
+	case _SC_JOB_CONTROL:
+		mib[0] = CTL_KERN;
+		mib[1] = KERN_JOB_CONTROL;
+		goto yesno;
+	case _SC_NGROUPS_MAX:
+		mib[0] = CTL_KERN;
+		mib[1] = KERN_NGROUPS;
+		break;
+	case _SC_OPEN_MAX:
+		return (getrlimit(RLIMIT_NOFILE, &rl) ? -1 : rl.rlim_cur);
+	case _SC_STREAM_MAX:
+		mib[0] = CTL_USER;
+		mib[1] = USER_STREAM_MAX;
+		break;
+	case _SC_TZNAME_MAX:
+		mib[0] = CTL_USER;
+		mib[1] = USER_TZNAME_MAX;
+		break;
+	case _SC_SAVED_IDS:
+		mib[0] = CTL_KERN;
+		mib[1] = KERN_SAVED_IDS;
+		goto yesno;
+	case _SC_VERSION:
+		mib[0] = CTL_KERN;
+		mib[1] = KERN_POSIX1;
+		break;
+
+/* 1003.2 */
+	case _SC_BC_BASE_MAX:
+		mib[0] = CTL_USER;
+		mib[1] = USER_BC_BASE_MAX;
+		break;
+	case _SC_BC_DIM_MAX:
+		mib[0] = CTL_USER;
+		mib[1] = USER_BC_DIM_MAX;
+		break;
+	case _SC_BC_SCALE_MAX:
+		mib[0] = CTL_USER;
+		mib[1] = USER_BC_SCALE_MAX;
+		break;
+	case _SC_BC_STRING_MAX:
+		mib[0] = CTL_USER;
+		mib[1] = USER_BC_STRING_MAX;
+		break;
+	case _SC_COLL_WEIGHTS_MAX:
+		mib[0] = CTL_USER;
+		mib[1] = USER_COLL_WEIGHTS_MAX;
+		break;
+	case _SC_EXPR_NEST_MAX:
+		mib[0] = CTL_USER;
+		mib[1] = USER_EXPR_NEST_MAX;
+		break;
+	case _SC_LINE_MAX:
+		mib[0] = CTL_USER;
+		mib[1] = USER_LINE_MAX;
+		break;
+	case _SC_RE_DUP_MAX:
+		mib[0] = CTL_USER;
+		mib[1] = USER_RE_DUP_MAX;
+		break;
+	case _SC_2_VERSION:
+		mib[0] = CTL_USER;
+		mib[1] = USER_POSIX2_VERSION;
+		break;
+	case _SC_2_C_BIND:
+		mib[0] = CTL_USER;
+		mib[1] = USER_POSIX2_C_BIND;
+		goto yesno;
+	case _SC_2_C_DEV:
+		mib[0] = CTL_USER;
+		mib[1] = USER_POSIX2_C_DEV;
+		goto yesno;
+	case _SC_2_CHAR_TERM:
+		mib[0] = CTL_USER;
+		mib[1] = USER_POSIX2_CHAR_TERM;
+		goto yesno;
+	case _SC_2_FORT_DEV:
+		mib[0] = CTL_USER;
+		mib[1] = USER_POSIX2_FORT_DEV;
+		goto yesno;
+	case _SC_2_FORT_RUN:
+		mib[0] = CTL_USER;
+		mib[1] = USER_POSIX2_FORT_RUN;
+		goto yesno;
+	case _SC_2_LOCALEDEF:
+		mib[0] = CTL_USER;
+		mib[1] = USER_POSIX2_LOCALEDEF;
+		goto yesno;
+	case _SC_2_SW_DEV:
+		mib[0] = CTL_USER;
+		mib[1] = USER_POSIX2_SW_DEV;
+		goto yesno;
+	case _SC_2_UPE:
+		mib[0] = CTL_USER;
+		mib[1] = USER_POSIX2_UPE;
+yesno:		if (sysctl(mib, 2, &value, &len, NULL, 0) == -1)
+			return (-1);
+		if (value == 0)
+			return (-1);
+		return (value);
+		break;
+	default:
+		errno = EINVAL;
+		return (-1);
+	}
+	return (sysctl(mib, 2, &value, &len, NULL, 0) == -1 ? -1 : value);
+}
diff --git a/lib/libc/gen/sysctl.3 b/lib/libc/gen/sysctl.3
new file mode 100644
index 0000000..a7cffcf
--- /dev/null
+++ b/lib/libc/gen/sysctl.3
@@ -0,0 +1,652 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)sysctl.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd "June 4, 1993"
+.Dt SYSCTL 3
+.Os
+.Sh NAME
+.Nm sysctl
+.Nd get or set system information
+.Sh SYNOPSIS
+.Fd #include <sys/sysctl.h>
+.Ft int
+.Fn sysctl "int *name" "u_int namelen" "void *oldp" "size_t *oldlenp" "void *newp" "size_t newlen"
+.Sh DESCRIPTION
+The
+.Nm sysctl
+function retrieves system information and allows processes with
+appropriate privileges to set system information.
+The information available from
+.Nm sysctl
+consists of integers, strings, and tables.
+Information may be retrieved and set from the command interface
+using the 
+.Xr sysctl 1
+utility.
+.Pp
+Unless explicitly noted below,
+.Nm sysctl
+returns a consistent snapshot of the data requested.
+Consistency is obtained by locking the destination
+buffer into memory so that the data may be copied out without blocking.
+Calls to
+.Nm sysctl
+are serialized to avoid deadlock.
+.Pp
+The state is described using a ``Management Information Base'' (MIB)
+style name, listed in
+.Fa name ,
+which is a
+.Fa namelen
+length array of integers.
+.Pp
+The information is copied into the buffer specified by
+.Fa oldp .
+The size of the buffer is given by the location specified by
+.Fa oldlenp
+before the call,
+and that location gives the amount of data copied after a successful call.
+If the amount of data available is greater
+than the size of the buffer supplied,
+the call supplies as much data as fits in the buffer provided
+and returns with the error code ENOMEM.
+If the old value is not desired,
+.Fa oldp
+and
+.Fa oldlenp
+should be set to NULL.
+.Pp
+The size of the available data can be determined by calling 
+.Nm sysctl
+with a NULL parameter for
+.Fa oldp .
+The size of the available data will be returned in the location pointed to by
+.Fa oldlenp .
+For some operations, the amount of space may change often.
+For these operations,
+the system attempts to round up so that the returned size is
+large enough for a call to return the data shortly thereafter.
+.Pp
+To set a new value,
+.Fa newp
+is set to point to a buffer of length
+.Fa newlen
+from which the requested value is to be taken.
+If a new value is not to be set,
+.Fa newp
+should be set to NULL and
+.Fa newlen
+set to 0.
+.Pp
+The top level names are defined with a CTL_ prefix in
+.Pa <sys/sysctl.h> ,
+and are as follows.
+The next and subsequent levels down are found in the include files
+listed here, and described in separate sections below.
+.Pp
+.Bl -column CTLXMACHDEPXXX "Next level namesXXXXXX" -offset indent
+.It Sy Pa Name	Next level names	Description
+.It CTL\_DEBUG	sys/sysctl.h	Debugging
+.It CTL\_FS	sys/sysctl.h	File system
+.It CTL\_HW	sys/sysctl.h	Generic CPU, I/O
+.It CTL\_KERN	sys/sysctl.h	High kernel limits
+.It CTL\_MACHDEP	sys/sysctl.h	Machine dependent
+.It CTL\_NET	sys/socket.h	Networking
+.It CTL\_USER	sys/sysctl.h	User-level
+.It CTL\_VM	vm/vm_param.h	Virtual memory
+.El
+.Pp
+For example, the following retrieves the maximum number of processes allowed
+in the system:
+.Bd -literal -offset indent -compact
+int mib[2], maxproc;
+size_t len;
+.sp
+mib[0] = CTL_KERN;
+mib[1] = KERN_MAXPROC;
+len = sizeof(maxproc);
+sysctl(mib, 2, &maxproc, &len, NULL, 0);
+.Ed
+.sp
+To retrieve the standard search path for the system utilities:
+.Bd -literal -offset indent -compact
+int mib[2];
+size_t len;
+char *p;
+.sp
+mib[0] = CTL_USER;
+mib[1] = USER_CS_PATH;
+sysctl(mib, 2, NULL, &len, NULL, 0);
+p = malloc(len);
+sysctl(mib, 2, p, &len, NULL, 0);
+.Ed
+.Sh CTL_DEBUG
+The debugging variables vary from system to system.
+A debugging variable may be added or deleted without need to recompile
+.Nm sysctl
+to know about it.
+Each time it runs,
+.Nm sysctl
+gets the list of debugging variables from the kernel and
+displays their current values.
+The system defines twenty 
+.Ns ( Va struct ctldebug )
+variables named 
+.Nm debug0
+through
+.Nm debug19 .
+They are declared as separate variables so that they can be
+individually initialized at the location of their associated variable.
+The loader prevents multiple use of the same variable by issuing errors
+if a variable is initialized in more than one place.
+For example, to export the variable
+.Nm dospecialcheck
+as a debugging variable, the following declaration would be used:
+.Bd -literal -offset indent -compact
+int dospecialcheck = 1;
+struct ctldebug debug5 = { "dospecialcheck", &dospecialcheck };
+.Ed
+.Sh CTL_FS
+There are currently no second level names for the file system.
+.Sh CTL_HW
+The string and integer information available for the CTL_HW level
+is detailed below.
+The changeable column shows whether a process with appropriate
+privilege may change the value.
+.Bl -column "Second level nameXXXXXX" integerXXX -offset indent
+.It Sy Pa Second level name	Type	Changeable
+.It HW\_MACHINE	string	no
+.It HW\_MODEL	string	no
+.It HW\_NCPU	integer	no
+.It HW\_BYTEORDER	integer	no
+.It HW\_PHYSMEM	integer	no
+.It HW\_USERMEM	integer	no
+.It HW\_PAGESIZE	integer	no
+.\".It HW\_DISKNAMES	integer	no
+.\".It HW\_DISKSTATS	integer	no
+.El
+.Pp
+.Bl -tag -width "123456"
+.It Li HW_MACHINE
+The machine class.
+.It Li HW_MODEL
+The machine model
+.It Li HW_NCPU
+The number of cpus.
+.It Li HW_BYTEORDER
+The byteorder (4,321, or 1,234).
+.It Li HW_PHYSMEM
+The bytes of physical memory.
+.It Li HW_USERMEM
+The bytes of non-kernel memory.
+.It Li HW_PAGESIZE
+The software page size.
+.\".It Fa HW_DISKNAMES
+.\".It Fa HW_DISKSTATS
+.El
+.Sh CTL_KERN
+The string and integer information available for the CTL_KERN level
+is detailed below.
+The changeable column shows whether a process with appropriate
+privilege may change the value.
+The types of data currently available are process information,
+system vnodes, the open file entries, routing table entries,
+virtual memory statistics, load average history, and clock rate
+information.
+.Bl -column "KERNXCHOWNXRESTRICTEDXXX" "struct clockrateXXX" -offset indent
+.It Sy Pa Second level name	Type	Changeable
+.It KERN\_ARGMAX	integer	no
+.It KERN\_BOOTTIME	struct timeval	no
+.It KERN\_CHOWN\_RESTRICTED	integer	no
+.It KERN\_CLOCKRATE	struct clockinfo	no
+.It KERN\_FILE	struct file	no
+.It KERN\_HOSTID	integer	yes
+.It KERN\_HOSTNAME	string	yes
+.It KERN\_JOB\_CONTROL	integer	no
+.It KERN\_LINK\_MAX	integer	no
+.It KERN\_MAXFILES	integer	yes
+.It KERN\_MAXPROC	integer	yes
+.It KERN\_MAXVNODES	integer	yes
+.It KERN\_MAX\_CANON	integer	no
+.It KERN\_MAX\_INPUT	integer	no
+.It KERN\_NAME\_MAX	integer	no
+.It KERN\_NGROUPS	integer	no
+.It KERN\_NO\_TRUNC	integer	no
+.It KERN\_OSRELEASE	string	no
+.It KERN\_OSREV	integer	no
+.It KERN\_OSTYPE	string	no
+.It KERN\_PATH\_MAX	integer	no
+.It KERN\_PIPE\_BUF	integer	no
+.It KERN\_POSIX1	integer	no
+.It KERN\_PROC	struct proc	no
+.It KERN\_PROF	node	not applicable
+.It KERN\_SAVED\_IDS	integer	no
+.It KERN\_SECURELVL	integer	raise only
+.It KERN\_VDISABLE	integer	no
+.It KERN\_VERSION	string	no
+.It KERN\_VNODE	struct vnode	no
+.El
+.Pp
+.Bl -tag -width "123456"
+.It Li KERN_ARGMAX
+The maximum bytes of argument to
+.Xr exec 2 .
+.It Li KERN_BOOTTIME
+A
+.Va struct timeval
+structure is returned.
+This structure contains the time that the system was booted.
+.It Li KERN_CHOWN_RESTRICTED
+Return 1 if appropriate privileges are required for the
+.Xr chown 2
+system call, otherwise 0.
+.It Li KERN_CLOCKRATE
+A
+.Va struct clockinfo
+structure is returned.
+This structure contains the clock, statistics clock and profiling clock
+frequencies, and the number of micro-seconds per hz tick.
+.It Li KERN_FILE
+Return the entire file table.
+The returned data consists of a single
+.Va struct filehead
+followed by an array of
+.Va struct file ,
+whose size depends on the current number of such objects in the system.
+.It Li KERN_HOSTID
+Get or set the host id.
+.It Li KERN_HOSTNAME
+Get or set the hostname.
+.It Li KERN_JOB_CONTROL
+Return 1 if job control is available on this system, otherwise 0.
+.It Li KERN_LINK_MAX
+The maximum file link count.
+.It Li KERN_MAXFILES
+The maximum number of open files that may be open in the system.
+.It Li KERN_MAXPROC
+The maximum number of simultaneous processes the system will allow.
+.It Li KERN_MAXVNODES
+The maximum number of vnodes available on the system.
+.It Li KERN_MAX_CANON
+The maximum number of bytes in terminal canonical input line.
+.It Li KERN_MAX_INPUT
+The minimum maximum number of bytes for which space is available in
+a terminal input queue.
+.It Li KERN_NAME_MAX
+The maximum number of bytes in a file name.
+.It Li KERN_NGROUPS
+The maximum number of supplemental groups.
+.It Li KERN_NO_TRUNC
+Return 1 if file names longer than KERN_NAME_MAX are truncated.
+.It Li KERN_OSRELEASE
+The system release string.
+.It Li KERN_OSREV
+The system revision string.
+.It Li KERN_OSTYPE
+The system type string.
+.It Li KERN_PATH_MAX
+The maximum number of bytes in a pathname.
+.It Li KERN_PIPE_BUF
+The maximum number of bytes which will be written atomically to a pipe.
+.It Li KERN_POSIX1
+The version of ISO/IEC 9945 (POSIX 1003.1) with which the system
+attempts to comply.
+.It Li KERN_PROC
+Return the entire process table, or a subset of it.
+An array of
+.Va struct kinfo_proc
+structures is returned,
+whose size depends on the current number of such objects in the system.
+The third and fourth level names are as follows:
+.Bl -column "Third level nameXXXXXX" "Fourth level is:XXXXXX" -offset indent
+.It Pa Third level name	Fourth level is:
+.It KERN\_PROC\_ALL	None
+.It KERN\_PROC\_PID	A process ID
+.It KERN\_PROC\_PGRP	A process group
+.It KERN\_PROC\_TTY	A tty device
+.It KERN\_PROC\_UID	A user ID
+.It KERN\_PROC\_RUID	A real user ID
+.El
+.It Li KERN_PROF
+Return profiling information about the kernel.
+If the kernel is not compiled for profiling,
+attempts to retrieve any of the KERN_PROF values will
+fail with EOPNOTSUPP.
+The third level names for the string and integer profiling information 
+is detailed below.
+The changeable column shows whether a process with appropriate
+privilege may change the value.
+.Bl -column "GPROFXGMONPARAMXXX" "struct gmonparamXXX" -offset indent
+.It Sy Pa Third level name	Type	Changeable
+.It GPROF\_STATE	integer	yes
+.It GPROF\_COUNT	u_short[\|]	yes
+.It GPROF\_FROMS	u_short[\|]	yes
+.It GPROF\_TOS	struct tostruct	yes
+.It GPROF\_GMONPARAM	struct gmonparam	no
+.El
+.Pp
+The variables are as follows:
+.Bl -tag -width "123456"
+.It Li GPROF_STATE
+Returns GMON_PROF_ON or GMON_PROF_OFF to show that profiling
+is running or stopped.
+.It Li GPROF_COUNT
+Array of statistical program counter counts.
+.It Li GPROF_FROMS
+Array indexed by program counter of call-from points.
+.It Li GPROF_TOS
+Array of
+.Va struct tostruct
+describing destination of calls and their counts.
+.It Li GPROF_GMONPARAM
+Structure giving the sizes of the above arrays.
+.El
+.It Li KERN_SAVED_IDS
+Returns 1 if saved set-group and saved set-user ID is available.
+.It Li KERN_SECURELVL
+The system security level.
+This level may be raised by processes with appropriate privilege.
+It may only be lowered by process 1.
+.It Li KERN_VDISABLE
+Returns the terminal character disabling value.
+.It Li KERN_VERSION
+The system version string.
+.It Li KERN_VNODE
+Return the entire vnode table.
+Note, the vnode table is not necessarily a consistent snapshot of
+the system.
+The returned data consists of an array whose size depends on the
+current number of such objects in the system.
+Each element of the array contains the kernel address of a vnode
+.Va struct vnode *
+followed by the vnode itself
+.Va struct vnode .
+.El
+.Sh CTL_MACHDEP
+The set of variables defined is architecture dependent.
+Most architectures define at least the following variables.
+.Bl -column "CONSOLE_DEVICEXXX" "integerXXX" -offset indent
+.It Sy Pa Second level name	Type	Changeable
+.It Li CPU_CONSDEV	dev_t	no
+.It Li CPU_ADJKERNTZ	int	yes
+.It Li CPU_DISRTCSET	int	yes
+.El
+.Sh CTL_NET
+The string and integer information available for the CTL_NET level
+is detailed below.
+The changeable column shows whether a process with appropriate
+privilege may change the value.
+.Bl -column "Second level nameXXXXXX" "routing messagesXXX" -offset indent
+.It Sy Pa Second level name	Type	Changeable
+.It PF\_ROUTE	routing messages	no
+.It PF\_INET	internet values	yes
+.El
+.Pp
+.Bl -tag -width "123456"
+.It Li PF_ROUTE
+Return the entire routing table or a subset of it.
+The data is returned as a sequence of routing messages (see
+.Xr route 4
+for the header file, format and meaning).
+The length of each message is contained in the message header.
+.Pp
+The third level name is a protocol number, which is currently always 0.
+The fourth level name is an address family, which may be set to 0 to
+select all address families.
+The fifth and sixth level names are as follows:
+.Bl -column "Fifth level nameXXXXXX" "Sixth level is:XXX" -offset indent
+.It Pa Fifth level name	Sixth level is:
+.It NET\_RT\_FLAGS	rtflags
+.It NET\_RT\_DUMP	None
+.It NET\_RT\_IFLIST	None
+.El
+.It Li PF_INET
+Get or set various global information about the internet protocols.
+The third level name is the protocol.
+The fourth level name is the variable name.
+The currently defined protocols and names are:
+.Bl -column "Protocol nameXXXXXX" "Variable nameXXX" "integerXXX" -offset indent
+.It Pa Protocol name	Variable name	Type	Changeable
+.It ip	forwarding	integer	yes
+.It ip	redirect	integer	yes
+.It ip	ttl	integer	yes
+.It icmp	maskrepl	integer	yes
+.It udp	checksum	integer	yes
+.El
+.Pp
+The variables are as follows:
+.Bl -tag -width "123456"
+.It Li ip.forwarding
+Returns 1 when IP forwarding is enabled for the host,
+meaning that the host is acting as a router.
+.It Li ip.redirect
+Returns 1 when ICMP redirects may be sent by the host.
+This option is ignored unless the host is routing IP packets,
+and should normally be enabled on all systems.
+.It Li ip.ttl
+The maximum time-to-live (hop count) value for an IP packet sourced by
+the system.
+This value applies to normal transport protocols, not to ICMP.
+.It Li icmp.maskrepl
+Returns 1 if ICMP network mask requests are to be answered.
+.It Li udp.checksum
+Returns 1 when UDP checksums are being computed and checked.
+Disabling UDP checksums is strongly discouraged.
+.El
+.Sh CTL_USER
+The string and integer information available for the CTL_USER level
+is detailed below.
+The changeable column shows whether a process with appropriate
+privilege may change the value.
+.Bl -column "USER_COLL_WEIGHTS_MAXXXX" "integerXXX" -offset indent
+.It Sy Pa Second level name	Type	Changeable
+.It USER\_BC\_BASE\_MAX	integer	no
+.It USER\_BC\_DIM\_MAX	integer	no
+.It USER\_BC\_SCALE\_MAX	integer	no
+.It USER\_BC\_STRING\_MAX	integer	no
+.It USER\_COLL\_WEIGHTS\_MAX	integer	no
+.It USER\_CS\_PATH	string	no
+.It USER\_EXPR\_NEST\_MAX	integer	no
+.It USER\_LINE\_MAX	integer	no
+.It USER\_POSIX2\_CHAR\_TERM	integer	no
+.It USER\_POSIX2\_C\_BIND	integer	no
+.It USER\_POSIX2\_C\_DEV	integer	no
+.It USER\_POSIX2\_FORT\_DEV	integer	no
+.It USER\_POSIX2\_FORT\_RUN	integer	no
+.It USER\_POSIX2\_LOCALEDEF	integer	no
+.It USER\_POSIX2\_SW\_DEV	integer	no
+.It USER\_POSIX2\_UPE	integer	no
+.It USER\_POSIX2\_VERSION	integer	no
+.It USER\_RE\_DUP\_MAX	integer	no
+.It USER\_STREAM\_MAX	integer	no
+.It USER\_TZNAME\_MAX	integer	no
+.El
+.Bl -tag -width "123456"
+.Pp
+.It Li USER_BC_BASE_MAX
+The maximum ibase/obase values in the
+.Xr bc 1
+utility.
+.It Li USER_BC_DIM_MAX
+The maximum array size in the
+.Xr bc 1
+utility.
+.It Li USER_BC_SCALE_MAX
+The maximum scale value in the
+.Xr bc 1
+utility.
+.It Li USER_BC_STRING_MAX
+The maximum string length in the
+.Xr bc 1
+utility.
+.It Li USER_COLL_WEIGHTS_MAX
+The maximum number of weights that can be assigned to any entry of
+the LC_COLLATE order keyword in the locale definition file.
+.It Li USER_CS_PATH
+Return a value for the
+.Ev PATH
+environment variable that finds all the standard utilities.
+.It Li USER_EXPR_NEST_MAX
+The maximum number of expressions that can be nested within
+parenthesis by the
+.Xr expr 1
+utility.
+.It Li USER_LINE_MAX
+The maximum length in bytes of a text-processing utility's input
+line.
+.It Li USER_POSIX2_CHAR_TERM
+Return 1 if the system supports at least one terminal type capable of
+all operations described in POSIX 1003.2, otherwise 0.
+.It Li USER_POSIX2_C_BIND
+Return 1 if the system's C-language development facilities support the
+C-Language Bindings Option, otherwise 0.
+.It Li USER_POSIX2_C_DEV
+Return 1 if the system supports the C-Language Development Utilities Option,
+otherwise 0.
+.It Li USER_POSIX2_FORT_DEV
+Return 1 if the system supports the FORTRAN Development Utilities Option,
+otherwise 0.
+.It Li USER_POSIX2_FORT_RUN
+Return 1 if the system supports the FORTRAN Runtime Utilities Option,
+otherwise 0.
+.It Li USER_POSIX2_LOCALEDEF
+Return 1 if the system supports the creation of locales, otherwise 0.
+.It Li USER_POSIX2_SW_DEV
+Return 1 if the system supports the Software Development Utilities Option,
+otherwise 0.
+.It Li USER_POSIX2_UPE
+Return 1 if the system supports the User Portability Utilities Option,
+otherwise 0.
+.It Li USER_POSIX2_VERSION
+The version of POSIX 1003.2 with which the system attempts to comply.
+.It Li USER_RE_DUP_MAX
+The maximum number of repeated occurrences of a regular expression
+permitted when using interval notation.
+.It Li USER_STREAM_MAX
+The minimum maximum number of streams that a process may have open
+at any one time.
+.It Li USER_TZNAME_MAX
+The minimum maximum number of types supported for the name of a
+timezone.
+.El
+.Sh CTL_VM
+The string and integer information available for the CTL_VM level
+is detailed below.
+The changeable column shows whether a process with appropriate
+privilege may change the value.
+.Bl -column "Second level nameXXXXXX" "struct loadavgXXX" -offset indent
+.It Sy Pa Second level name	Type	Changeable
+.It VM\_LOADAVG	struct loadavg	no
+.It VM\_METER	struct vmtotal	no
+.El
+.Pp
+.Bl -tag -width "123456"
+.It Li VM_LOADAVG
+Return the load average history.
+The returned data consists of a
+.Va struct loadavg .
+.It Li VM_METER
+Return the system wide virtual memory statistics.
+The returned data consists of a
+.Va struct vmtotal .
+.El
+.Sh RETURN VALUES
+If the call to
+.Nm sysctl
+is successful, 0 is returned.
+Otherwise \-1 is returned and
+.Va errno
+is set appropriately.
+.Sh ERRORS
+The following errors may be reported:
+.Bl -tag -width Er
+.It Bq Er EFAULT
+The buffer
+.Fa name ,
+.Fa oldp ,
+.Fa newp ,
+or length pointer
+.Fa oldlenp
+contains an invalid address.
+.It Bq Er EINVAL
+The
+.Fa name
+array is less than two or greater than CTL_MAXNAME.
+.It Bq Er EINVAL
+A non-null
+.Fa newp
+is given and its specified length in
+.Fa newlen
+is too large or too small.
+.It Bq Er ENOMEM
+The length pointed to by
+.Fa oldlenp
+is too short to hold the requested value.
+.It Bq Er ENOTDIR
+The
+.Fa name
+array specifies an intermediate rather than terminal name.
+.It Bq Er EOPNOTSUPP
+The
+.Fa name
+array specifies a value that is unknown.
+.It Bq Er EPERM
+An attempt is made to set a read-only value.
+.It Bq Er EPERM
+A process without appropriate privilege attempts to set a value.
+.El
+.Sh FILES
+.Bl -tag -width <netinet/icmpXvar.h> -compact
+.It Pa <sys/sysctl.h>
+definitions for top level identifiers, second level kernel and hardware
+identifiers, and user level identifiers
+.It Pa <sys/socket.h>
+definitions for second level network identifiers
+.It Pa <sys/gmon.h>
+definitions for third level profiling identifiers
+.It Pa <vm/vm_param.h>
+definitions for second level virtual memory identifiers
+.It Pa <netinet/in.h>
+definitions for third level Internet identifiers and
+fourth level IP identifiers
+.It Pa <netinet/icmp_var.h>
+definitions for fourth level ICMP identifiers
+.It Pa <netinet/udp_var.h>
+definitions for fourth level UDP identifiers
+.El
+.Sh SEE ALSO
+.Xr sysctl 8
+.Sh HISTORY
+The
+.Nm sysctl
+function first appeared in 4.4BSD.
diff --git a/lib/libc/gen/sysctl.c b/lib/libc/gen/sysctl.c
new file mode 100644
index 0000000..cb7448a
--- /dev/null
+++ b/lib/libc/gen/sysctl.c
@@ -0,0 +1,178 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)sysctl.c	8.2 (Berkeley) 1/4/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <paths.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+
+int
+sysctl(name, namelen, oldp, oldlenp, newp, newlen)
+	int *name;
+	u_int namelen;
+	void *oldp, *newp;
+	size_t *oldlenp, newlen;
+{
+	if (name[0] != CTL_USER)
+		return (__sysctl(name, namelen, oldp, oldlenp, newp, newlen));
+
+	if (newp != NULL) {
+		errno = EPERM;
+		return (-1);
+	}
+	if (namelen != 2) {
+		errno = EINVAL;
+		return (-1);
+	}
+
+	switch (name[1]) {
+	case USER_CS_PATH:
+		if (oldp && *oldlenp < sizeof(_PATH_STDPATH))
+			return (ENOMEM);
+		*oldlenp = sizeof(_PATH_STDPATH);
+		if (oldp != NULL)
+			memmove(oldp, _PATH_STDPATH, sizeof(_PATH_STDPATH));
+		return (0);
+	}
+
+	if (oldp && *oldlenp < sizeof(int))
+		return (ENOMEM);
+	*oldlenp = sizeof(int);
+	if (oldp == NULL)
+		return (0);
+
+	switch (name[1]) {
+	case USER_BC_BASE_MAX:
+		*(int *)oldp = BC_BASE_MAX;
+		return (0);
+	case USER_BC_DIM_MAX:
+		*(int *)oldp = BC_DIM_MAX;
+		return (0);
+	case USER_BC_SCALE_MAX:
+		*(int *)oldp = BC_SCALE_MAX;
+		return (0);
+	case USER_BC_STRING_MAX:
+		*(int *)oldp = BC_STRING_MAX;
+		return (0);
+	case USER_COLL_WEIGHTS_MAX:
+		*(int *)oldp = COLL_WEIGHTS_MAX;
+		return (0);
+	case USER_EXPR_NEST_MAX:
+		*(int *)oldp = EXPR_NEST_MAX;
+		return (0);
+	case USER_LINE_MAX:
+		*(int *)oldp = LINE_MAX;
+		return (0);
+	case USER_RE_DUP_MAX:
+		*(int *)oldp = RE_DUP_MAX;
+		return (0);
+	case USER_POSIX2_VERSION:
+		*(int *)oldp = _POSIX2_VERSION;
+		return (0);
+	case USER_POSIX2_C_BIND:
+#ifdef POSIX2_C_BIND
+		*(int *)oldp = 1;
+#else
+		*(int *)oldp = 0;
+#endif
+		return (0);
+	case USER_POSIX2_C_DEV:
+#ifdef	POSIX2_C_DEV
+		*(int *)oldp = 1;
+#else
+		*(int *)oldp = 0;
+#endif
+		return (0);
+	case USER_POSIX2_CHAR_TERM:
+#ifdef	POSIX2_CHAR_TERM
+		*(int *)oldp = 1;
+#else
+		*(int *)oldp = 0;
+#endif
+		return (0);
+	case USER_POSIX2_FORT_DEV:
+#ifdef	POSIX2_FORT_DEV
+		*(int *)oldp = 1;
+#else
+		*(int *)oldp = 0;
+#endif
+		return (0);
+	case USER_POSIX2_FORT_RUN:
+#ifdef	POSIX2_FORT_RUN
+		*(int *)oldp = 1;
+#else
+		*(int *)oldp = 0;
+#endif
+		return (0);
+	case USER_POSIX2_LOCALEDEF:
+#ifdef	POSIX2_LOCALEDEF
+		*(int *)oldp = 1;
+#else
+		*(int *)oldp = 0;
+#endif
+		return (0);
+	case USER_POSIX2_SW_DEV:
+#ifdef	POSIX2_SW_DEV
+		*(int *)oldp = 1;
+#else
+		*(int *)oldp = 0;
+#endif
+		return (0);
+	case USER_POSIX2_UPE:
+#ifdef	POSIX2_UPE
+		*(int *)oldp = 1;
+#else
+		*(int *)oldp = 0;
+#endif
+		return (0);
+	case USER_STREAM_MAX:
+		*(int *)oldp = FOPEN_MAX;
+		return (0);
+	case USER_TZNAME_MAX:
+		*(int *)oldp = NAME_MAX;
+		return (0);
+	default:
+		errno = EINVAL;
+		return (-1);
+	}
+	/* NOTREACHED */
+}
diff --git a/lib/libc/gen/syslog.3 b/lib/libc/gen/syslog.3
new file mode 100644
index 0000000..8a46d05
--- /dev/null
+++ b/lib/libc/gen/syslog.3
@@ -0,0 +1,263 @@
+.\" Copyright (c) 1985, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)syslog.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SYSLOG 3
+.Os BSD 4.2
+.Sh NAME
+.Nm syslog ,
+.Nm vsyslog ,
+.Nm openlog ,
+.Nm closelog ,
+.Nm setlogmask
+.Nd control system log
+.Sh SYNOPSIS
+.Fd #include <syslog.h>
+.Fd #include <varargs.h>
+.Ft void
+.Fn syslog "int priority" "const char *message" "..."
+.Ft void
+.Fn vsyslog "int priority" "const char *message" "va_list args"
+.Ft void
+.Fn openlog "const char *ident" "int logopt" "int facility"
+.Ft void
+.Fn closelog void
+.Ft int
+.Fn setlogmask "int maskpri"
+.Sh DESCRIPTION
+The
+.Fn syslog
+function
+writes
+.Fa message
+to the system message logger.
+The message is then written to the system console, log files,
+logged-in users, or forwarded to other machines as appropriate. (See
+.Xr syslogd 8 . )
+.Pp
+The message is identical to a
+.Xr printf 3
+format string, except that
+.Ql %m
+is replaced by the current error
+message. (As denoted by the global variable
+.Va errno ;
+see
+.Xr strerror 3 . )
+A trailing newline is added if none is present.
+.Pp
+The
+.Fn vsyslog
+function
+is an alternate form in which the arguments have already been captured
+using the variable-length argument facilities of
+.Xr varargs 3 .
+.Pp
+The message is tagged with
+.Fa priority .
+Priorities are encoded as a
+.Fa facility
+and a
+.Em level .
+The facility describes the part of the system
+generating the message.
+The level is selected from the following
+.Em ordered
+(high to low) list:
+.Bl -tag -width LOG_AUTHPRIV
+.It Dv LOG_EMERG
+A panic condition.
+This is normally broadcast to all users.
+.It Dv LOG_ALERT
+A condition that should be corrected immediately, such as a corrupted
+system database.
+.It Dv LOG_CRIT
+Critical conditions, e.g., hard device errors.
+.It Dv LOG_ERR
+Errors.
+.It Dv LOG_WARNING
+Warning messages.
+.It Dv LOG_NOTICE
+Conditions that are not error conditions,
+but should possibly be handled specially.
+.It Dv LOG_INFO
+Informational messages.
+.It Dv LOG_DEBUG
+Messages that contain information
+normally of use only when debugging a program.
+.El
+.Pp
+The
+.Fn openlog
+function
+provides for more specialized processing of the messages sent
+by
+.Fn syslog
+and
+.Fn vsyslog .
+The parameter
+.Fa ident
+is a string that will be prepended to every message.
+The
+.Fa logopt
+argument
+is a bit field specifying logging options, which is formed by
+.Tn OR Ns 'ing
+one or more of the following values:
+.Bl -tag -width LOG_AUTHPRIV
+.It Dv LOG_CONS
+If
+.Fn syslog
+cannot pass the message to
+.Xr syslogd
+it will attempt to write the message to the console
+.Pq Dq Pa /dev/console.
+.It Dv LOG_NDELAY 
+Open the connection to
+.Xr syslogd
+immediately.
+Normally the open is delayed until the first message is logged.
+Useful for programs that need to manage the order in which file
+descriptors are allocated.
+.It Dv LOG_PERROR
+Write the message to standard error output as well to the system log.
+.It Dv LOG_PID
+Log the process id with each message: useful for identifying
+instantiations of daemons.
+.El
+.Pp
+The
+.Fa facility
+parameter encodes a default facility to be assigned to all messages
+that do not have an explicit facility encoded:
+.Bl -tag -width LOG_AUTHPRIV
+.It Dv LOG_AUTH
+The authorization system:
+.Xr login 1 ,
+.Xr su 1 ,
+.Xr getty 8 ,
+etc.
+.It Dv LOG_AUTHPRIV
+The same as
+.Dv LOG_AUTH ,
+but logged to a file readable only by
+selected individuals.
+.It Dv LOG_CRON
+The clock daemon.
+.It Dv LOG_DAEMON
+System daemons, such as
+.Xr routed 8 ,
+that are not provided for explicitly by other facilities.
+.It Dv LOG_KERN
+Messages generated by the kernel.
+These cannot be generated by any user processes.
+.It Dv LOG_LPR
+The line printer spooling system:
+.Xr lpr 1 ,
+.Xr lpc 8 ,
+.Xr lpd 8 ,
+etc.
+.It Dv LOG_MAIL
+The mail system.
+.It Dv LOG_NEWS
+The network news system.
+.It Dv LOG_SYSLOG
+Messages generated internally by
+.Xr syslogd 8 .
+.It Dv LOG_USER
+Messages generated by random user processes.
+This is the default facility identifier if none is specified.
+.It Dv LOG_UUCP
+The uucp system.
+.It Dv LOG_LOCAL0
+Reserved for local use.
+Similarly for
+.Dv LOG_LOCAL1
+through
+.Dv LOG_LOCAL7 .
+.El 
+.Pp
+The
+.Fn closelog
+function
+can be used to close the log file.
+.Pp
+The
+.Fn setlogmask
+function
+sets the log priority mask to
+.Fa maskpri
+and returns the previous mask.
+Calls to
+.Fn syslog
+with a priority not set in
+.Fa maskpri
+are rejected.
+The mask for an individual priority
+.Fa pri
+is calculated by the macro
+.Fn LOG_MASK pri ;
+the mask for all priorities up to and including
+.Fa toppri
+is given by the macro
+.Fn LOG_UPTO toppri ; .
+The default allows all priorities to be logged.
+.Sh RETURN VALUES
+The routines
+.Fn closelog ,
+.Fn openlog ,
+.Fn syslog
+and
+.Fn vsyslog
+return no value.
+.Pp
+The routine
+.Fn setlogmask
+always returns the previous log mask level.
+.Sh EXAMPLES
+.Bd -literal -offset indent -compact
+syslog(LOG_ALERT, "who: internal error 23");
+
+openlog("ftpd", LOG_PID, LOG_DAEMON);
+setlogmask(LOG_UPTO(LOG_ERR));
+syslog(LOG_INFO, "Connection from host %d", CallingHost);
+
+syslog(LOG_INFO|LOG_LOCAL2, "foobar error: %m");
+.Ed
+.Sh SEE ALSO
+.Xr logger 1 ,
+.Xr syslogd 8
+.Sh HISTORY
+These
+functions appeared in 
+.Bx 4.2 .
diff --git a/lib/libc/gen/syslog.c b/lib/libc/gen/syslog.c
new file mode 100644
index 0000000..1ef9a66
--- /dev/null
+++ b/lib/libc/gen/syslog.c
@@ -0,0 +1,312 @@
+/*
+ * Copyright (c) 1983, 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*
+static char sccsid[] = "From: @(#)syslog.c	8.4 (Berkeley) 3/18/94";
+*/
+static const char rcsid[] =
+  "$Id: syslog.c,v 1.6 1995/10/21 07:05:01 peter Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/syslog.h>
+#include <sys/uio.h>
+#include <netdb.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <paths.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+static int	LogFile = -1;		/* fd for log */
+static int	connected;		/* have done connect */
+static int	LogStat = 0;		/* status bits, set by openlog() */
+static const char *LogTag = NULL;	/* string to tag the entry with */
+static int	LogFacility = LOG_USER;	/* default facility code */
+static int	LogMask = 0xff;		/* mask of priorities to be logged */
+extern char	*__progname;		/* Program name, from crt0. */
+
+/*
+ * Format of the magic cookie passed through the stdio hook
+ */
+struct bufcookie {
+	char	*base;	/* start of buffer */
+	int	left;
+};
+
+/*
+ * stdio write hook for writing to a static string buffer
+ * XXX: Maybe one day, dynamically allocate it so that the line length
+ *      is `unlimited'.
+ */
+static writehook(cookie, buf, len)
+	void	*cookie;	/* really [struct bufcookie *] */
+	char	*buf;		/* characters to copy */
+	int	len;		/* length to copy */
+{
+	struct bufcookie *h;	/* private `handle' */
+
+	h = (struct bufcookie *)cookie;
+	if (len > h->left) {
+		/* clip in case of wraparound */
+		len = h->left;
+	}
+	if (len > 0) {
+		(void)memcpy(h->base, buf, len); /* `write' it. */
+		h->base += len;
+		h->left -= len;
+	}
+	return 0;
+}
+
+/*
+ * syslog, vsyslog --
+ *	print message on log file; output is intended for syslogd(8).
+ */
+void
+#if __STDC__
+syslog(int pri, const char *fmt, ...)
+#else
+syslog(pri, fmt, va_alist)
+	int pri;
+	char *fmt;
+	va_dcl
+#endif
+{
+	va_list ap;
+
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	vsyslog(pri, fmt, ap);
+	va_end(ap);
+}
+
+void
+vsyslog(pri, fmt, ap)
+	int pri;
+	register const char *fmt;
+	va_list ap;
+{
+	register int cnt;
+	register char ch, *p;
+	time_t now;
+	int fd, saved_errno;
+	char *stdp, tbuf[2048], fmt_cpy[1024];
+	FILE *fp, *fmt_fp;
+	struct bufcookie tbuf_cookie;
+	struct bufcookie fmt_cookie;
+
+#define	INTERNALLOG	LOG_ERR|LOG_CONS|LOG_PERROR|LOG_PID
+	/* Check for invalid bits. */
+	if (pri & ~(LOG_PRIMASK|LOG_FACMASK)) {
+		syslog(INTERNALLOG,
+		    "syslog: unknown facility/priority: %x", pri);
+		pri &= LOG_PRIMASK|LOG_FACMASK;
+	}
+
+	/* Check priority against setlogmask values. */
+	if (!(LOG_MASK(LOG_PRI(pri)) & LogMask))
+		return;
+
+	saved_errno = errno;
+
+	/* Set default facility if none specified. */
+	if ((pri & LOG_FACMASK) == 0)
+		pri |= LogFacility;
+
+	/* Create the primary stdio hook */
+	tbuf_cookie.base = tbuf;
+	tbuf_cookie.left = sizeof(tbuf);
+	fp = fwopen(&tbuf_cookie, writehook);
+	if (fp == NULL)
+		return;
+
+	/* Build the message. */
+	(void)time(&now);
+	(void)fprintf(fp, "<%d>", pri);
+	(void)fprintf(fp, "%.15s ", ctime(&now) + 4);
+	if (LogStat & LOG_PERROR) {
+		/* Transfer to string buffer */
+		(void)fflush(fp);
+		stdp = tbuf + (sizeof(tbuf) - tbuf_cookie.left);
+	}
+	if (LogTag == NULL)
+		LogTag = __progname;
+	if (LogTag != NULL)
+		(void)fprintf(fp, "%s", LogTag);
+	if (LogStat & LOG_PID)
+		(void)fprintf(fp, "[%d]", getpid());
+	if (LogTag != NULL) {
+		(void)fprintf(fp, ": ");
+	}
+
+	/* Check to see if we can skip expanding the %m */
+	if (strstr(fmt, "%m")) {
+
+		/* Create the second stdio hook */
+		fmt_cookie.base = fmt_cpy;
+		fmt_cookie.left = sizeof(fmt_cpy) - 1;
+		fmt_fp = fwopen(&fmt_cookie, writehook);
+		if (fmt_fp == NULL) {
+			fclose(fp);
+			return;
+		}
+
+		/* Substitute error message for %m. */
+		for ( ; ch = *fmt; ++fmt)
+			if (ch == '%' && fmt[1] == 'm') {
+				++fmt;
+				fputs(strerror(saved_errno), fmt_fp);
+			} else
+				fputc(ch, fmt_fp);
+
+		/* Null terminate if room */
+		fputc(0, fmt_fp);
+		fclose(fmt_fp);
+
+		/* Guarantee null termination */
+		fmt_cpy[sizeof(fmt_cpy) - 1] = '\0';
+
+		fmt = fmt_cpy;
+	}
+
+	(void)vfprintf(fp, fmt, ap);
+	(void)fclose(fp);
+
+	cnt = sizeof(tbuf) - tbuf_cookie.left;
+
+	/* Output to stderr if requested. */
+	if (LogStat & LOG_PERROR) {
+		struct iovec iov[2];
+		register struct iovec *v = iov;
+
+		v->iov_base = stdp;
+		v->iov_len = cnt - (stdp - tbuf);
+		++v;
+		v->iov_base = "\n";
+		v->iov_len = 1;
+		(void)writev(STDERR_FILENO, iov, 2);
+	}
+
+	/* Get connected, output the message to the local logger. */
+	if (!connected)
+		openlog(LogTag, LogStat | LOG_NDELAY, 0);
+	if (send(LogFile, tbuf, cnt, 0) >= 0)
+		return;
+
+	/*
+	 * Output the message to the console; don't worry about blocking,
+	 * if console blocks everything will.  Make sure the error reported
+	 * is the one from the syslogd failure.
+	 */
+	if (LogStat & LOG_CONS &&
+	    (fd = open(_PATH_CONSOLE, O_WRONLY, 0)) >= 0) {
+		struct iovec iov[2];
+		register struct iovec *v = iov;
+
+		p = strchr(tbuf, '>') + 1;
+		v->iov_base = p;
+		v->iov_len = cnt - (p - tbuf);
+		++v;
+		v->iov_base = "\r\n";
+		v->iov_len = 2;
+		(void)writev(fd, iov, 2);
+		(void)close(fd);
+	}
+}
+
+static struct sockaddr SyslogAddr;	/* AF_UNIX address of local logger */
+
+void
+openlog(ident, logstat, logfac)
+	const char *ident;
+	int logstat, logfac;
+{
+	if (ident != NULL)
+		LogTag = ident;
+	LogStat = logstat;
+	if (logfac != 0 && (logfac &~ LOG_FACMASK) == 0)
+		LogFacility = logfac;
+
+	if (LogFile == -1) {
+		SyslogAddr.sa_family = AF_UNIX;
+		(void)strncpy(SyslogAddr.sa_data, _PATH_LOG,
+		    sizeof(SyslogAddr.sa_data));
+		if (LogStat & LOG_NDELAY) {
+			if ((LogFile = socket(AF_UNIX, SOCK_DGRAM, 0)) == -1)
+				return;
+			(void)fcntl(LogFile, F_SETFD, 1);
+		}
+	}
+	if (LogFile != -1 && !connected)
+		if (connect(LogFile, &SyslogAddr, sizeof(SyslogAddr)) == -1) {
+			(void)close(LogFile);
+			LogFile = -1;
+		} else
+			connected = 1;
+}
+
+void
+closelog()
+{
+	(void)close(LogFile);
+	LogFile = -1;
+	connected = 0;
+}
+
+/* setlogmask -- set the log mask level */
+int
+setlogmask(pmask)
+	int pmask;
+{
+	int omask;
+
+	omask = LogMask;
+	if (pmask != 0)
+		LogMask = pmask;
+	return (omask);
+}
diff --git a/lib/libc/gen/tcgetpgrp.3 b/lib/libc/gen/tcgetpgrp.3
new file mode 100644
index 0000000..e97c256
--- /dev/null
+++ b/lib/libc/gen/tcgetpgrp.3
@@ -0,0 +1,79 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)tcgetpgrp.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd "June 4, 1993"
+.Dt TCGETPGRP 3
+.Os
+.Sh NAME
+.Nm tcgetpgrp
+.Nd get foreground process group ID
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <unistd.h>
+.Ft pid_t
+.Fn tcgetpgrp "int fd"
+.Sh DESCRIPTION
+The
+.Nm tcgetpgrp
+function returns the value of the process group ID of the foreground
+process group associated with the terminal device.
+If there is no foreground process group,
+.Nm tcgetpgrp
+returns an invalid process ID.
+.Sh ERRORS
+If an error occurs,
+.Nm tcgetpgrp
+returns -1 and the global variable
+.Va errno
+is set to indicate the error, as follows:
+.Bl -tag -width Er
+.It Bq Er EBADF
+The
+.Fa fd
+argument is not a valid file descriptor.
+.It Bq Er ENOTTY
+The calling process does not have a controlling terminal or the
+underlying terminal device represented by
+.Fa fd
+is not the controlling terminal.
+.El
+.Sh SEE ALSO
+.Xr setpgid 3 ,
+.Xr setsid 2 ,
+.Xr tcsetpgrp 3
+.Sh STANDARDS
+The
+.Nm tcgetpgrp
+function is expected to be compliant with the
+.St -p1003.1-88
+specification.
diff --git a/lib/libc/gen/tcsendbreak.3 b/lib/libc/gen/tcsendbreak.3
new file mode 100644
index 0000000..2ff9ece
--- /dev/null
+++ b/lib/libc/gen/tcsendbreak.3
@@ -0,0 +1,154 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)tcsendbreak.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd "June 4, 1993"
+.Dt TCSENDBREAK 3
+.Os
+.Sh NAME
+.Nm tcsendbreak ,
+.Nm tcdrain ,
+.Nm tcflush ,
+.Nm tcflow
+.Nd line control functions
+.Sh SYNOPSIS
+.Fd #include <termios.h>
+.Ft int
+.Fn tcdrain "int fd"
+.Ft int
+.Fn tcflow "int fd" "int action"
+.Ft int
+.Fn tcflush "int fd" "int action"
+.Ft int
+.Fn tcsendbreak "int fd" "int len"
+.Sh DESCRIPTION
+The
+.Nm tcdrain
+function waits until all output written to the terminal referenced by
+.Fa fd
+has been transmitted to the terminal.
+.Pp
+The
+.Nm tcflow
+function suspends transmission of data to or the reception of data from
+the terminal referenced by
+.Fa fd
+depending on the value of
+.Fa action .
+The value of
+.Fa action
+must be one of the following:
+.Bl -tag -width "TCIOFF"
+.It Fa TCOOFF
+Suspend output.
+.It Fa TCOON
+Restart suspended output.
+.It Fa TCIOFF
+Transmit a STOP character, which is intended to cause the terminal to stop
+transmitting data to the system.
+(See the description of IXOFF in the
+.Ql Input Modes
+section of
+.Xr termios 4 ).
+.It Fa TCION
+Transmit a START character, which is intended to cause the terminal to start
+transmitting data to the system.
+(See the description of IXOFF in the
+.Ql Input Modes
+section of
+.Xr termios 4 ).
+.El
+.Pp
+The
+.Nm tcflush
+function discards any data written to the terminal referenced by
+.Fa fd
+which has not been transmitted to the terminal, or any data received
+from the terminal but not yet read, depending on the value of
+.Fa action .
+The value of
+.Fa action
+must be one of the following:
+.Bl -tag -width "TCIOFLUSH"
+.It Fa TCIFLUSH
+Flush data received but not read.
+.It Fa TCOFLUSH
+Flush data written but not transmitted.
+.It Fa TCIOFLUSH
+Flush both data received but not read and data written but not transmitted.
+.El
+.Pp
+The
+.Nm tcsendbreak
+function transmits a continuous stream of zero-valued bits for four-tenths
+of a second to the terminal referenced by
+.Fa fd .
+The
+.Fa len
+parameter is ignored in this implementation.
+.Sh RETURN VALUES
+Upon successful completion, all of these functions return a value of zero.
+.Sh ERRORS
+If any error occurs, a value of -1 is returned and the global variable
+.Va errno
+is set to indicate the error, as follows:
+.Bl -tag -width Er
+.It Bq Er EBADF
+The
+.Fa fd
+argument is not a valid file descriptor.
+.It Bq Er EINVAL
+The
+.Fa action
+argument is not a proper value.
+.It Bq Er ENOTTY
+The file associated with
+.Fa fd
+is not a terminal.
+.It Bq Er EINTR
+A signal interrupted the
+.Nm tcdrain
+function.
+.El
+.Sh SEE ALSO
+.Xr tcsetattr 3 ,
+.Xr termios 4
+.Sh STANDARDS
+The
+.Nm tcsendbreak ,
+.Nm tcdrain ,
+.Nm tcflush
+and
+.Nm tcflow
+functions are expected to be compliant with the
+.St -p1003.1-88
+specification.
diff --git a/lib/libc/gen/tcsetattr.3 b/lib/libc/gen/tcsetattr.3
new file mode 100644
index 0000000..d3b2b4f
--- /dev/null
+++ b/lib/libc/gen/tcsetattr.3
@@ -0,0 +1,330 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)tcsetattr.3	8.3 (Berkeley) 1/2/94
+.\"
+.Dd "January 2, 1994"
+.Dt TCSETATTR 3
+.Os
+.Sh NAME
+.Nm cfgetispeed ,
+.Nm cfsetispeed ,
+.Nm cfgetospeed ,
+.Nm cfsetospeed ,
+.Nm cfsetspeed ,
+.Nm cfmakeraw ,
+.Nm tcgetattr ,
+.Nm tcsetattr
+.Nd manipulating the termios structure
+.Sh SYNOPSIS
+.Fd #include <termios.h>
+.Ft speed_t
+.Fn cfgetispeed "struct termios *t"
+.Ft int
+.Fn cfsetispeed "struct termios *t" "speed_t speed"
+.Ft speed_t
+.Fn cfgetospeed "struct termios *t"
+.Ft int
+.Fn cfsetospeed "struct termios *t" "speed_t speed"
+.Ft int
+.Fn cfsetspeed "struct termios *t" "speed_t speed"
+.Ft void
+.Fn cfmakeraw "struct termios *t"
+.Ft int
+.Fn tcgetattr "int fd" "struct termios *t"
+.Ft int
+.Fn tcsetattr "int fd" "int action" "struct termios *t"
+.Sh DESCRIPTION
+The
+.Nm cfmakeraw ,
+.Nm tcgetattr
+and
+.Nm tcsetattr
+functions are provided for getting and setting the termios structure.
+.Pp
+The
+.Nm cfgetispeed ,
+.Nm cfsetispeed ,
+.Nm cfgetospeed ,
+.Nm cfsetospeed
+and
+.Nm cfsetspeed
+functions are provided for getting and setting the baud rate values in
+the termios structure.
+The effects of the functions on the terminal as described below
+do not become effective, nor are all errors detected, until the
+.Nm tcsetattr
+function is called.
+Certain values for baud rates set in the termios structure and passed to
+.Nm tcsetattr
+have special meanings.
+These are discussed in the portion of the manual page that describes the
+.Nm tcsetattr
+function.
+.Sh GETTING AND SETTING THE BAUD RATE
+The input and output baud rates are found in the termios structure.
+The unsigned integer
+.Li speed_t
+is typdef'd in the include file
+.Aq Pa termios.h .
+The value of the integer corresponds directly to the baud rate being
+represented, however, the following symbolic values are defined.
+.Bd -literal
+#define B0	0
+#define B50	50
+#define B75	75
+#define B110	110
+#define B134	134
+#define B150	150
+#define B200	200
+#define B300	300
+#define B600	600
+#define B1200	1200
+#define	B1800	1800
+#define B2400	2400
+#define B4800	4800
+#define B9600	9600
+#define B19200	19200
+#define B38400	38400
+#ifndef _POSIX_SOURCE
+#define EXTA	19200
+#define EXTB	38400
+#endif  /*_POSIX_SOURCE */
+.Ed
+.Pp
+The
+.Nm cfgetispeed
+function returns the input baud rate in the termios structure referenced by
+.Fa tp .
+.Pp
+The
+.Nm cfsetispeed
+function sets the input baud rate in the termios structure referenced by
+.Fa tp
+to
+.Fa speed .
+.Pp
+The
+.Nm cfgetospeed
+function returns the output baud rate in the termios structure referenced by
+.Fa tp .
+.Pp
+The
+.Nm cfsetospeed
+function sets the output baud rate in the termios structure referenced by
+.Fa tp
+to
+.Fa speed .
+.Pp
+The
+.Nm cfsetspeed
+function sets both the input and output baud rate in the termios structure
+referenced by
+.Fa tp
+to
+.Fa speed .
+.Pp
+Upon successful completion, the functions
+.Nm cfsetispeed ,
+.Nm cfsetospeed ,
+and
+.Nm cfsetspeed
+return a value of 0.
+Otherwise, a value of -1 is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh GETTING AND SETTING THE TERMIOS STATE
+This section describes the functions that are used to control the general
+terminal interface.
+Unless otherwise noted for a specific command, these functions are restricted
+from use by background processes.
+Attempts to perform these operations shall cause the process group to be sent
+a SIGTTOU signal.
+If the calling process is blocking or ignoring SIGTTOU signals, the process
+is allowed to perform the operation and the SIGTTOU signal is not sent.
+.Pp
+In all the functions, although
+.Fa fd
+is an open file descriptor, the functions affect the underlying terminal
+file, not just the open file description associated with the particular
+file descriptor.
+.Pp
+The
+.Nm cfmakeraw
+function sets the flags stored in the termios structure to a state disabling
+all input and output processing, giving a
+.Dq raw I/O path.
+It should be noted that there is no function to reverse this effect.
+This is because there are a variety of processing options that could be
+re-enabled and the correct method is for an application to snapshot the
+current terminal state using the function
+.Nm tcgetattr ,
+setting raw mode with
+.Nm cfmakeraw
+and the subsequent
+.Nm tcsetattr ,
+and then using another
+.Nm tcsetattr
+with the saved state to revert to the previous terminal state.
+.Pp
+The
+.Nm tcgetattr
+function copies the parameters associated with the terminal referenced
+by
+.Fa fd
+in the termios structure referenced by
+.Fa tp .
+This function is allowed from a background process, however, the terminal
+attributes may be subsequently changed by a foreground process.
+.Pp
+The
+.Nm tcsetattr
+function sets the parameters associated with the terminal from the
+termios structure referenced by
+.Fa tp .
+The
+.Fa action
+field is created by
+.Em or Ns 'ing
+the following values, as specified in the include file
+.Aq Pa termios.h .
+.Bl -tag -width "TCSADRAIN"
+.It Fa TCSANOW
+The change occurs immediately.
+.It Fa TCSADRAIN
+The change occurs after all output written to
+.Fa fd
+has been transmitted to the terminal.
+This value of
+.Fa action
+should be used when changing parameters that affect output.
+.It Fa TCSAFLUSH
+The change occurs after all output written to
+.Fa fd
+has been transmitted to the terminal.
+Additionally, any input that has been received but not read is discarded.
+.It Fa TCSASOFT
+If this value is
+.Em or Ns 'ed
+into the
+.Fa action
+value, the values of the
+.Em c_cflag ,
+.Em c_ispeed ,
+and
+.Em c_ospeed
+fields are ignored.
+.El
+.Pp
+The 0 baud rate is used to terminate the connection.
+If 0 is specified as the output speed to the function
+.Nm tcsetattr ,
+modem control will no longer be asserted on the terminal, disconnecting
+the terminal.
+.Pp
+If zero is specified as the input speed to the function
+.Nm tcsetattr ,
+the input baud rate will be set to the same value as that specified by
+the output baud rate.
+.Pp
+If
+.Nm tcsetattr
+is unable to make any of the requested changes, it returns -1 and
+sets errno.
+Otherwise, it makes all of the requested changes it can.
+If the specified input and output baud rates differ and are a combination
+that is not supported, neither baud rate is changed.
+.Pp
+Upon successful completion, the functions
+.Nm tcgetattr
+and
+.Nm tcsetattr
+return a value of 0.
+Otherwise, they
+return -1 and the global variable
+.Va errno
+is set to indicate the error, as follows:
+.Bl -tag -width Er
+.It Bq Er EBADF
+The
+.Fa fd
+argument to
+.Nm tcgetattr
+or
+.Nm tcsetattr
+was not a valid file descriptor.
+.It Bq Er EINTR
+The
+.Nm tcsetattr
+function was interrupted by a signal.
+.It Bq Er EINVAL
+The
+.Fa action
+argument to the
+.Nm tcsetattr
+function was not valid, or an attempt was made to change an attribute
+represented in the termios structure to an unsupported value.
+.It Bq Er ENOTTY
+The file associated with the
+.Fa fd
+argument to
+.Nm tcgetattr
+or
+.Nm tcsetattr
+is not a terminal.
+.El
+.Sh SEE ALSO
+.Xr tcsendbreak 3 ,
+.Xr termios 4
+.Sh STANDARDS
+The
+.Nm cfgetispeed ,
+.Nm cfsetispeed ,
+.Nm cfgetospeed ,
+.Nm cfsetospeed ,
+.Nm tcgetattr
+and
+.Nm tcsetattr
+functions are expected to be compliant with the
+.St -p1003.1-88
+specification.
+The
+.Nm cfmakeraw
+and
+.Nm cfsetspeed
+functions,
+as well as the
+.Li TCSASOFT
+option to the
+.Nm tcsetattr
+function are extensions to the
+.St -p1003.1-88
+specification.
diff --git a/lib/libc/gen/tcsetpgrp.3 b/lib/libc/gen/tcsetpgrp.3
new file mode 100644
index 0000000..e1f8af0
--- /dev/null
+++ b/lib/libc/gen/tcsetpgrp.3
@@ -0,0 +1,100 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)tcsetpgrp.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd "June 4, 1993"
+.Dt TCSETPGRP 3
+.Os
+.Sh NAME
+.Nm tcsetpgrp
+.Nd set foreground process group ID
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <unistd.h>
+.Ft int
+.Fn tcsetpgrp "int fd" "pid_t pgrp_id"
+.Sh DESCRIPTION
+If the process has a controlling terminal, the
+.Nm tcsetpgrp
+function sets the foreground process group ID associated with the
+terminal device to
+.Fa pgrp_id .
+The terminal device associated with
+.Fa fd
+must be the controlling terminal of the calling process and the
+controlling terminal must be currently associated with the session
+of the calling process.
+The value of
+.Fa pgrp_id
+must be the same as the process group ID of a process in the same
+session as the calling process.
+.Pp
+Upon successful completion,
+.Nm tcsetpgrp
+returns a value of zero.
+.Sh ERRORS
+If an error occurs,
+.Nm tcgetpgrp
+returns -1 and the global variable
+.Va errno
+is set to indicate the error, as follows:
+.Bl -tag -width Er
+.It Bq Er EBADF
+The
+.Fa fd
+argument is not a valid file descriptor.
+.It Bq Er EINVAL
+An invalid value of
+.Fa pgrp_id
+was specified.
+.It Bq Er ENOTTY
+The calling process does not have a controlling terminal, or the file
+represented by
+.Fa fd
+is not the controlling terminal, or the controlling terminal is no
+longer associated with the session of the calling process.
+.It Bq Er EPERM
+The
+.Fa pgrp_id
+argument does not match the process group ID of a process in the same
+session as the calling process.
+.El
+.Sh SEE ALSO
+.Xr setpgid 3 ,
+.Xr setsid 2 ,
+.Xr tcgetpgrp 3
+.Sh STANDARDS
+The
+.Nm tcsetpgprp
+function is expected to be compliant with the
+.St -p1003.1-88
+specification.
diff --git a/lib/libc/gen/telldir.c b/lib/libc/gen/telldir.c
new file mode 100644
index 0000000..ab23d9d
--- /dev/null
+++ b/lib/libc/gen/telldir.c
@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)telldir.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <dirent.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+/*
+ * The option SINGLEUSE may be defined to say that a telldir
+ * cookie may be used only once before it is freed. This option
+ * is used to avoid having memory usage grow without bound.
+ */
+#define SINGLEUSE
+
+/*
+ * One of these structures is malloced to describe the current directory
+ * position each time telldir is called. It records the current magic
+ * cookie returned by getdirentries and the offset within the buffer
+ * associated with that return value.
+ */
+struct ddloc {
+	struct	ddloc *loc_next;/* next structure in list */
+	long	loc_index;	/* key associated with structure */
+	long	loc_seek;	/* magic cookie returned by getdirentries */
+	long	loc_loc;	/* offset of entry in buffer */
+	const DIR* loc_dirp;	/* directory which used this entry */
+};
+
+#define	NDIRHASH	32	/* Num of hash lists, must be a power of 2 */
+#define	LOCHASH(i)	((i)&(NDIRHASH-1))
+
+static long	dd_loccnt;	/* Index of entry for sequential readdir's */
+static struct	ddloc *dd_hash[NDIRHASH];   /* Hash list heads for ddlocs */
+
+/*
+ * return a pointer into a directory
+ */
+long
+telldir(dirp)
+	const DIR *dirp;
+{
+	register int index;
+	register struct ddloc *lp;
+
+	if ((lp = (struct ddloc *)malloc(sizeof(struct ddloc))) == NULL)
+		return (-1);
+	index = dd_loccnt++;
+	lp->loc_index = index;
+	lp->loc_seek = dirp->dd_seek;
+	lp->loc_loc = dirp->dd_loc;
+	lp->loc_dirp = dirp;
+	lp->loc_next = dd_hash[LOCHASH(index)];
+	dd_hash[LOCHASH(index)] = lp;
+	return (index);
+}
+
+/*
+ * seek to an entry in a directory.
+ * Only values returned by "telldir" should be passed to seekdir.
+ */
+void
+_seekdir(dirp, loc)
+	register DIR *dirp;
+	long loc;
+{
+	register struct ddloc *lp;
+	register struct ddloc **prevlp;
+	struct dirent *dp;
+
+	prevlp = &dd_hash[LOCHASH(loc)];
+	lp = *prevlp;
+	while (lp != NULL) {
+		if (lp->loc_index == loc)
+			break;
+		prevlp = &lp->loc_next;
+		lp = lp->loc_next;
+	}
+	if (lp == NULL)
+		return;
+	if (lp->loc_loc == dirp->dd_loc && lp->loc_seek == dirp->dd_seek)
+		goto found;
+	(void) lseek(dirp->dd_fd, (off_t)lp->loc_seek, SEEK_SET);
+	dirp->dd_seek = lp->loc_seek;
+	dirp->dd_loc = 0;
+	while (dirp->dd_loc < lp->loc_loc) {
+		dp = readdir(dirp);
+		if (dp == NULL)
+			break;
+	}
+found:
+#ifdef SINGLEUSE
+	*prevlp = lp->loc_next;
+	free((caddr_t)lp);
+#endif
+}
+
+/*
+ * Reclaim memory for telldir cookies which weren't used.
+ */
+void
+_reclaim_telldir(dirp)
+	register const DIR *dirp;
+{
+	register struct ddloc *lp;
+	register struct ddloc **prevlp;
+	int i;
+
+	for (i = 0; i < NDIRHASH; i++) {
+		prevlp = &dd_hash[i];
+		lp = *prevlp;
+		while (lp != NULL) {
+			if (lp->loc_dirp == dirp) {
+				*prevlp = lp->loc_next;
+				free((caddr_t)lp);
+				lp = *prevlp;
+				continue;
+			}
+			prevlp = &lp->loc_next;
+			lp = lp->loc_next;
+		}
+	}
+}
diff --git a/lib/libc/gen/termios.c b/lib/libc/gen/termios.c
new file mode 100644
index 0000000..3625ae0
--- /dev/null
+++ b/lib/libc/gen/termios.c
@@ -0,0 +1,245 @@
+/*-
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)termios.c	8.2 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+
+#include <errno.h>
+#include <termios.h>
+#include <unistd.h>
+
+int
+tcgetattr(fd, t)
+	int fd;
+	struct termios *t;
+{
+
+	return (ioctl(fd, TIOCGETA, t));
+}
+
+int
+tcsetattr(fd, opt, t)
+	int fd, opt;
+	const struct termios *t;
+{
+	struct termios localterm;
+
+	if (opt & TCSASOFT) {
+		localterm = *t;
+		localterm.c_cflag |= CIGNORE;
+		t = &localterm;
+	}
+	switch (opt & ~TCSASOFT) {
+	case TCSANOW:
+		return (ioctl(fd, TIOCSETA, t));
+	case TCSADRAIN:
+		return (ioctl(fd, TIOCSETAW, t));
+	case TCSAFLUSH:
+		return (ioctl(fd, TIOCSETAF, t));
+	default:
+		errno = EINVAL;
+		return (-1);
+	}
+}
+
+int
+#if __STDC__
+tcsetpgrp(int fd, pid_t pgrp)
+#else
+tcsetpgrp(fd, pgrp)
+	int fd;
+	pid_t pgrp;
+#endif
+{
+	int s;
+
+	s = pgrp;
+	return (ioctl(fd, TIOCSPGRP, &s));
+}
+
+pid_t
+tcgetpgrp(fd)
+	int fd;
+{
+	int s;
+
+	if (ioctl(fd, TIOCGPGRP, &s) < 0)
+		return ((pid_t)-1);
+
+	return ((pid_t)s);
+}
+
+speed_t
+cfgetospeed(t)
+	const struct termios *t;
+{
+
+	return (t->c_ospeed);
+}
+
+speed_t
+cfgetispeed(t)
+	const struct termios *t;
+{
+
+	return (t->c_ispeed);
+}
+
+int
+cfsetospeed(t, speed)
+	struct termios *t;
+	speed_t speed;
+{
+
+	t->c_ospeed = speed;
+	return (0);
+}
+
+int
+cfsetispeed(t, speed)
+	struct termios *t;
+	speed_t speed;
+{
+
+	t->c_ispeed = speed;
+	return (0);
+}
+
+int
+cfsetspeed(t, speed)
+	struct termios *t;
+	speed_t speed;
+{
+
+	t->c_ispeed = t->c_ospeed = speed;
+	return (0);
+}
+
+/*
+ * Make a pre-existing termios structure into "raw" mode: character-at-a-time
+ * mode with no characters interpreted, 8-bit data path.
+ */
+void
+cfmakeraw(t)
+	struct termios *t;
+{
+
+	t->c_iflag &= ~(IMAXBEL|IXOFF|INPCK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON|IGNPAR);
+	t->c_iflag |= IGNBRK;
+	t->c_oflag &= ~OPOST;
+	t->c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|ICANON|ISIG|IEXTEN|NOFLSH|TOSTOP|PENDIN);
+	t->c_cflag &= ~(CSIZE|PARENB);
+	t->c_cflag |= CS8;
+	t->c_cc[VMIN] = 1;
+	t->c_cc[VTIME] = 0;
+}
+
+int
+tcsendbreak(fd, len)
+	int fd, len;
+{
+	struct timeval sleepytime;
+
+	sleepytime.tv_sec = 0;
+	sleepytime.tv_usec = 400000;
+	if (ioctl(fd, TIOCSBRK, 0) == -1)
+		return (-1);
+	(void)select(0, 0, 0, 0, &sleepytime);
+	if (ioctl(fd, TIOCCBRK, 0) == -1)
+		return (-1);
+	return (0);
+}
+
+int
+tcdrain(fd)
+	int fd;
+{
+
+	return (ioctl(fd, TIOCDRAIN, 0));
+}
+
+int
+tcflush(fd, which)
+	int fd, which;
+{
+	int com;
+
+	switch (which) {
+	case TCIFLUSH:
+		com = FREAD;
+		break;
+	case TCOFLUSH:
+		com = FWRITE;
+		break;
+	case TCIOFLUSH:
+		com = FREAD | FWRITE;
+		break;
+	default:
+		errno = EINVAL;
+		return (-1);
+	}
+	return (ioctl(fd, TIOCFLUSH, &com));
+}
+
+int
+tcflow(fd, action)
+	int fd, action;
+{
+	struct termios term;
+	u_char c;
+
+	switch (action) {
+	case TCOOFF:
+		return (ioctl(fd, TIOCSTOP, 0));
+	case TCOON:
+		return (ioctl(fd, TIOCSTART, 0));
+	case TCION:
+	case TCIOFF:
+		if (tcgetattr(fd, &term) == -1)
+			return (-1);
+		c = term.c_cc[action == TCIOFF ? VSTOP : VSTART];
+		if (c != _POSIX_VDISABLE && write(fd, &c, sizeof(c)) == -1)
+			return (-1);
+		return (0);
+	default:
+		errno = EINVAL;
+		return (-1);
+	}
+	/* NOTREACHED */
+}
diff --git a/lib/libc/gen/time.3 b/lib/libc/gen/time.3
new file mode 100644
index 0000000..6283393
--- /dev/null
+++ b/lib/libc/gen/time.3
@@ -0,0 +1,86 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)time.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt TIME 3
+.Os BSD 4
+.Sh NAME
+.Nm time
+.Nd get time of day
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <time.h>
+.Ft time_t
+.Fn time "time_t *tloc"
+.Sh DESCRIPTION
+The
+.Fn time
+function
+returns the value of time in seconds since 0 hours, 0 minutes,
+0 seconds, January 1, 1970, Coordinated Universal Time.
+.Pp
+A copy of the time value may be saved to the area indicated by the
+pointer
+.Fa tloc .
+If
+.Fa tloc
+is a NULL pointer, no value is stored.
+.Pp
+Upon successful completion,
+.Fn time
+returns the value of time.
+Otherwise a value of
+.Po
+.Po Fa time_t Pc \-1
+.Pc
+is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+The following error codes may be set in
+.Va errno :
+.Bl -tag -width [EFAULT]
+.It Bq Er EFAULT
+An argument address referenced invalid memory.
+.Sh SEE ALSO
+.Xr gettimeofday 2 ,
+.Xr ctime 3
+.Sh HISTORY
+A
+.Fn time
+function appeared in
+.At v6 .
diff --git a/lib/libc/gen/time.c b/lib/libc/gen/time.c
new file mode 100644
index 0000000..044d3a2
--- /dev/null
+++ b/lib/libc/gen/time.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)time.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/time.h>
+
+time_t
+time(t)
+	time_t *t;
+{
+	struct timeval tt;
+
+	if (gettimeofday(&tt, (struct timezone *)0) < 0)
+		return(-1);
+	if (t)
+		*t = tt.tv_sec;
+	return(tt.tv_sec);
+}
diff --git a/lib/libc/gen/times.3 b/lib/libc/gen/times.3
new file mode 100644
index 0000000..93207b1
--- /dev/null
+++ b/lib/libc/gen/times.3
@@ -0,0 +1,136 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)times.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt TIMES 3
+.Os BSD 4
+.Sh NAME
+.Nm times
+.Nd process times
+.Sh SYNOPSIS
+.Fd #include <sys/times.h>
+.Ft clock_t 
+.Fn times "struct tms *tp"
+.Sh DESCRIPTION
+.Bf -symbolic
+This interface is obsoleted by getrusage(2)
+and gettimeofday(3).
+.Ef
+.Pp
+The
+.Fn times
+function returns the value of time in
+.Dv CLK_TCK Ns 's
+of a second since
+0 hours, 0 minutes, 0 seconds, January 1, 1970, Coordinated Universal
+Time.
+.Pp
+It also fills in the structure pointed to by
+.Fa tp
+with time-accounting information.
+.Pp
+The
+.Fa tms
+structure is defined as follows:
+.Bd -literal -offset indent
+typedef struct {
+	clock_t tms_utime;
+	clock_t tms_stime;
+	clock_t tms_cutime;
+	clock_t tms_cstime;
+}
+.Ed
+.Pp
+The elements of this structure are defined as follows:
+.Bl -tag -width tms_cutime
+.It Fa tms_utime
+The
+.Tn CPU
+time charged for the execution of user instructions.
+.It Fa tms_stime
+The
+.Tn CPU
+time charged for execution by the system on behalf of
+the process.
+.It Fa tms_cutime
+The sum of the
+.Fa tms_utime  s
+and
+.Fa tms_cutime  s
+of the child processes.
+.It Fa tms_cstime
+The sum of the
+.Fa tms_stime Ns s
+and
+.Fa tms_cstime Ns s
+of the child processes.
+.El
+.Pp
+All times are in
+.Dv CLK_TCK Ns 's
+of a second.
+.Pp
+The times of a terminated child process are included in the
+.Fa tms_cutime
+and
+.Fa tms_cstime
+elements of the parent when one of the
+.Xr wait 2
+functions returns the process ID of the terminated child to the parent.
+If an error occurs,
+.Fn times
+returns the value
+.Pq (clock_t)\-1 ,
+and sets errno to indicate the error.
+.Sh ERRORS
+The
+.Fn times
+function
+may fail and set the global variable
+.Va errno
+for any of the errors specified for the library
+routines
+.Xr getrusage 2
+and
+.Xr gettimeofday 2 .
+.Sh SEE ALSO
+.Xr time 1 ,
+.Xr getrusage 2 ,
+.Xr gettimeofday 2 ,
+.Xr wait 2
+.Sh STANDARDS
+The
+.Fn times
+function
+conforms to
+.St -p1003.1-88 .
diff --git a/lib/libc/gen/times.c b/lib/libc/gen/times.c
new file mode 100644
index 0000000..c145d0a
--- /dev/null
+++ b/lib/libc/gen/times.c
@@ -0,0 +1,67 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)times.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/times.h>
+#include <sys/resource.h>
+
+/*
+ * Convert usec to clock ticks; could do (usec * CLK_TCK) / 1000000,
+ * but this would overflow if we switch to nanosec.
+ */
+#define	CONVTCK(r)	(r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK))
+
+clock_t
+times(tp)
+	register struct tms *tp;
+{
+	struct rusage ru;
+	struct timeval t;
+
+	if (getrusage(RUSAGE_SELF, &ru) < 0)
+		return ((clock_t)-1);
+	tp->tms_utime = CONVTCK(ru.ru_utime);
+	tp->tms_stime = CONVTCK(ru.ru_stime);
+	if (getrusage(RUSAGE_CHILDREN, &ru) < 0)
+		return ((clock_t)-1);
+	tp->tms_cutime = CONVTCK(ru.ru_utime);
+	tp->tms_cstime = CONVTCK(ru.ru_stime);
+	if (gettimeofday(&t, (struct timezone *)0))
+		return ((clock_t)-1);
+	return ((clock_t)(CONVTCK(t)));
+}
diff --git a/lib/libc/gen/timezone.3 b/lib/libc/gen/timezone.3
new file mode 100644
index 0000000..68adeb9
--- /dev/null
+++ b/lib/libc/gen/timezone.3
@@ -0,0 +1,67 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)timezone.3	8.2 (Berkeley) 4/19/94
+.\"
+.Dd "April 19, 1994"
+.Dt TIMEZONE 3
+.Os
+.Sh NAME
+.Nm timezone
+.Nd return the timezone abbreviation
+.Sh SYNOPSIS
+.Ft char *
+.Fn timezone "int zone" "int dst"
+.Sh DESCRIPTION
+.ft B
+This interface is for compatibility only; it is impossible to reliably
+map timezone's arguments to a time zone abbreviation.
+See ctime(3).
+.ft P
+.Pp
+The
+.Fn timezone
+function returns a pointer to a time zone abbreviation for the specified
+.Ar zone
+and
+.Ar dst
+values.
+.Ar Zone
+is the number of minutes west of GMT and
+.Ar dst
+is non-zero if daylight savings time is in effect.
+.Sh SEE ALSO
+.Xr ctime 3
+.Sh HISTORY
+A
+.Fn timezone
+function appeared in
+.At v7 .
diff --git a/lib/libc/gen/timezone.c b/lib/libc/gen/timezone.c
new file mode 100644
index 0000000..370493b
--- /dev/null
+++ b/lib/libc/gen/timezone.c
@@ -0,0 +1,134 @@
+/*
+ * Copyright (c) 1987, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)timezone.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#define TZ_MAX_CHARS 255
+
+char *_tztab();
+
+/*
+ * timezone --
+ *	The arguments are the number of minutes of time you are westward
+ *	from Greenwich and whether DST is in effect.  It returns a string
+ *	giving the name of the local timezone.  Should be replaced, in the
+ *	application code, by a call to localtime.
+ */
+
+static char	czone[TZ_MAX_CHARS];		/* space for zone name */
+
+char *
+timezone(zone, dst)
+	int	zone,
+		dst;
+{
+	register char	*beg,
+			*end;
+
+	if (beg = getenv("TZNAME")) {		/* set in environment */
+		if (end = index(beg, ',')) {	/* "PST,PDT" */
+			if (dst)
+				return(++end);
+			*end = '\0';
+			(void)strncpy(czone,beg,sizeof(czone) - 1);
+			czone[sizeof(czone) - 1] = '\0';
+			*end = ',';
+			return(czone);
+		}
+		return(beg);
+	}
+	return(_tztab(zone,dst));	/* default: table or created zone */
+}
+
+static struct zone {
+	int	offset;
+	char	*stdzone;
+	char	*dlzone;
+} zonetab[] = {
+	-1*60,	"MET",	"MET DST",	/* Middle European */
+	-2*60,	"EET",	"EET DST",	/* Eastern European */
+	4*60,	"AST",	"ADT",		/* Atlantic */
+	5*60,	"EST",	"EDT",		/* Eastern */
+	6*60,	"CST",	"CDT",		/* Central */
+	7*60,	"MST",	"MDT",		/* Mountain */
+	8*60,	"PST",	"PDT",		/* Pacific */
+#ifdef notdef
+	/* there's no way to distinguish this from WET */
+	0,	"GMT",	0,		/* Greenwich */
+#endif
+	0*60,	"WET",	"WET DST",	/* Western European */
+	-10*60,	"EST",	"EST",		/* Aust: Eastern */
+     -10*60+30,	"CST",	"CST",		/* Aust: Central */
+	-8*60,	"WST",	0,		/* Aust: Western */
+	-1
+};
+
+/*
+ * _tztab --
+ *	check static tables or create a new zone name; broken out so that
+ *	we can make a guess as to what the zone is if the standard tables
+ *	aren't in place in /etc.  DO NOT USE THIS ROUTINE OUTSIDE OF THE
+ *	STANDARD LIBRARY.
+ */
+char *
+_tztab(zone,dst)
+	register int	zone;
+	int	dst;
+{
+	register struct zone	*zp;
+	register char	sign;
+
+	for (zp = zonetab; zp->offset != -1;++zp)	/* static tables */
+		if (zp->offset == zone) {
+			if (dst && zp->dlzone)
+				return(zp->dlzone);
+			if (!dst && zp->stdzone)
+				return(zp->stdzone);
+		}
+
+	if (zone < 0) {					/* create one */
+		zone = -zone;
+		sign = '+';
+	}
+	else
+		sign = '-';
+	(void)sprintf(czone,"GMT%c%d:%02d",sign,zone / 60,zone % 60);
+	return(czone);
+}
diff --git a/lib/libc/gen/ttyname.3 b/lib/libc/gen/ttyname.3
new file mode 100644
index 0000000..742de5f
--- /dev/null
+++ b/lib/libc/gen/ttyname.3
@@ -0,0 +1,126 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)ttyname.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt TTYNAME 3
+.Os
+.Sh NAME
+.Nm ttyname ,
+.Nm isatty ,
+.Nm ttyslot
+.Nd get name of associated terminal (tty) from file descriptor
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft char *
+.Fn ttyname "int fd"
+.Ft int
+.Fn isatty "int fd"
+.Ft int
+.Fn ttyslot 
+.Sh DESCRIPTION
+These functions operate on the system file descriptors for terminal
+type devices. These descriptors are not related to the standard
+.Tn I/O
+.Dv FILE
+typedef, but refer to the special device files found in
+.Pa /dev
+and named
+.Pa /dev/tty Ns Em xx
+and for which an entry exists
+in the initialization file
+.Pa /etc/ttys.
+(See
+.Xr ttys 5 . )
+.Pp
+The
+.Fn isatty
+function
+determines if the file descriptor
+.Fa fd
+refers to a valid
+terminal type device.
+.Pp
+The
+.Fn ttyname
+function
+gets the related device name of
+a file descriptor for which
+.Fn isatty
+is true
+.Pp
+The
+.Fn ttyslot
+function
+fetches the current process' control terminal number from the
+.Xr ttys 5
+file entry.
+.Sh RETURN VALUES
+The
+.Fn ttyname
+function
+returns the null terminated name if the device is found and
+.Fn isatty
+is true; otherwise 
+a
+.Dv NULL
+pointer is returned.
+.Pp
+The
+.Fn ttyslot
+function
+returns the unit number of the device file if found; otherwise
+the value zero is returned.
+.Sh FILES
+.Bl -tag -width /etc/ttys -compact
+.It Pa /dev/\(**
+.It Pa /etc/ttys
+.El
+.Sh SEE ALSO
+.Xr ioctl 2 ,
+.Xr ttys 5
+.Sh HISTORY
+A
+.Fn isatty ,
+.Fn ttyname ,
+and
+.Fn ttyslot
+function
+appeared in
+.At v7 .
+.Sh BUGS
+The
+.Fn ttyname
+function leaves its result in an internal static object and returns
+a pointer to that object. Subsequent calls to
+.Fn ttyname
+will modify the same object.
diff --git a/lib/libc/gen/ttyname.c b/lib/libc/gen/ttyname.c
new file mode 100644
index 0000000..f024f52
--- /dev/null
+++ b/lib/libc/gen/ttyname.c
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ttyname.c	8.2 (Berkeley) 1/27/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <termios.h>
+#include <db.h>
+#include <string.h>
+#include <paths.h>
+
+static char buf[sizeof(_PATH_DEV) + MAXNAMLEN] = _PATH_DEV;
+static char *oldttyname __P((int, struct stat *));
+
+char *
+ttyname(fd)
+	int fd;
+{
+	struct stat sb;
+	struct termios ttyb;
+	DB *db;
+	DBT data, key;
+	struct {
+		mode_t type;
+		dev_t dev;
+	} bkey;
+
+	/* Must be a terminal. */
+	if (tcgetattr(fd, &ttyb) < 0)
+		return (NULL);
+	/* Must be a character device. */
+	if (fstat(fd, &sb) || !S_ISCHR(sb.st_mode))
+		return (NULL);
+
+	if (db = dbopen(_PATH_DEVDB, O_RDONLY, 0, DB_HASH, NULL)) {
+		memset(&bkey, 0, sizeof(bkey));
+		bkey.type = S_IFCHR;
+		bkey.dev = sb.st_rdev;
+		key.data = &bkey;
+		key.size = sizeof(bkey);
+		if (!(db->get)(db, &key, &data, 0)) {
+			bcopy(data.data,
+			    buf + sizeof(_PATH_DEV) - 1, data.size);
+			(void)(db->close)(db);
+			return (buf);
+		}
+		(void)(db->close)(db);
+	}
+	return (oldttyname(fd, &sb));
+}
+
+static char *
+oldttyname(fd, sb)
+	int fd;
+	struct stat *sb;
+{
+	register struct dirent *dirp;
+	register DIR *dp;
+	struct stat dsb;
+
+	if ((dp = opendir(_PATH_DEV)) == NULL)
+		return (NULL);
+
+	while (dirp = readdir(dp)) {
+		if (dirp->d_fileno != sb->st_ino)
+			continue;
+		bcopy(dirp->d_name, buf + sizeof(_PATH_DEV) - 1,
+		    dirp->d_namlen + 1);
+		if (stat(buf, &dsb) || sb->st_dev != dsb.st_dev ||
+		    sb->st_ino != dsb.st_ino)
+			continue;
+		(void)closedir(dp);
+		return (buf);
+	}
+	(void)closedir(dp);
+	return (NULL);
+}
diff --git a/lib/libc/gen/ttyslot.c b/lib/libc/gen/ttyslot.c
new file mode 100644
index 0000000..066f2f9
--- /dev/null
+++ b/lib/libc/gen/ttyslot.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ttyslot.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <ttyent.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+int
+ttyslot()
+{
+	register struct ttyent *ttyp;
+	register int slot;
+	register char *p;
+	int cnt;
+	char *name;
+
+	setttyent();
+	for (cnt = 0; cnt < 3; ++cnt)
+		if (name = ttyname(cnt)) {
+			if (p = rindex(name, '/'))
+				++p;
+			else
+				p = name;
+			for (slot = 1; ttyp = getttyent(); ++slot)
+				if (!strcmp(ttyp->ty_name, p)) {
+					endttyent();
+					return(slot);
+				}
+			break;
+		}
+	endttyent();
+	return(0);
+}
diff --git a/lib/libc/gen/tzset.3 b/lib/libc/gen/tzset.3
new file mode 100644
index 0000000..d9606c5
--- /dev/null
+++ b/lib/libc/gen/tzset.3
@@ -0,0 +1,324 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Arthur Olson.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)tzset.3	8.2 (Berkeley) 11/17/93
+.\"
+.Dd November 17, 1993
+.Dt TZSET 3
+.Os
+.Sh NAME
+.Nm tzset ,
+.Nm tzsetwall
+.Nd initialize time conversion information
+.Sh SYNOPSIS
+.Fd #include <time.h>
+.Ft void
+.Fn tzset void
+.Ft void
+.Fn tzsetwall void
+.Sh DESCRIPTION
+The
+.Fn tzset
+function
+initializes time conversion information used by the library routine
+.Xr localtime 3 .
+The environment variable
+.Ev TZ
+specifies how this is done.
+.Pp
+If
+.Ev TZ
+does not appear in the environment, the best available approximation to
+local wall clock time, as specified by the
+.Xr tzfile 5 Ns -format
+file
+.Pa /etc/localtime
+is used.
+.Pp
+If
+.Ev TZ
+appears in the environment but its value is a null string, Coordinated
+Universal Time
+.Pq Tn UTC
+is used (without leap second correction).
+.Pp
+If
+.Ev TZ
+appears in the environment and its value begins with a colon
+.Pq Ql \: ,
+the rest of its value is used as a pathname of a
+.Xr tzfile 5 Ns -format
+file from which to read the time conversion information.
+If the first character of the pathname is a slash
+.Pq Ql /
+it is used as
+an absolute pathname; otherwise, it is used as a pathname relative to
+the system time conversion information directory.
+.Pp
+If its value does not begin with a colon, it is first used as the pathname
+of a file (as described above) from which to read the time conversion
+information.
+If that file cannot be read, the value is then interpreted as a direct
+specification (the format is described below) of the time conversion
+information.
+.Pp
+If the
+.Ev TZ
+environment variable does not specify a
+.Xr tzfile 5 Ns -format
+file and cannot be interpreted as a direct specification,
+.Tn UTC
+is used.
+.Pp
+The
+.Fn tzsetwall
+function
+sets things up so that
+.Xr localtime
+returns the best available approximation of local wall clock time.
+.Sh SPECIFICATION FORMAT
+When
+.Ev TZ
+is used directly as a specification of the time conversion information,
+it must have the following syntax (spaces inserted for clarity):
+.Bd -filled -offset indent
+.Em std offset Bo
+.Em dst Bo
+.Em offset
+.Bc
+.Bo
+.No , Em rule
+.Bc
+.Bc
+.Ed
+.Pp
+Where:
+.Bl -tag -width std_and_dst -offset indent
+.It Em std No and Em dst
+Three or more bytes that are the designation for the standard
+.Pq Em std
+or summer
+.Pq Em dst
+time zone.  Only
+.Em std
+is required; if
+.Em dst
+is missing, then summer time does not apply in this locale.
+Upper and lowercase letters are explicitly allowed.  Any characters
+except a leading colon
+.Pq Ql : ,
+digits, comma
+.Pq Ql \&, ,
+minus
+.Pq Ql \- ,
+plus
+.Pq Ql + ,
+and
+.Tn ASCII
+.Dv NUL
+are allowed.
+.It Em offset
+Indicates the value one must add to the local time to arrive at
+Coordinated Universal Time.  The
+.Em offset
+has the form:
+.Bd -unfilled -offset indent
+.Em hh Bo
+.Pf \&: Em mm
+.Bo
+.Pf \&: Em ss
+.Bc
+.Bc
+.Ed
+.Pp
+The minutes
+.Pq Em mm
+and seconds
+.Pq Em ss
+are optional.  The hour
+.Pq Em hh
+is required and may be a single digit.  The
+.Em offset
+following
+.Em std
+is required.  If no
+.Em offset
+follows
+.Em dst ,
+summer time is assumed to be one hour ahead of standard time.  One or
+more digits may be used; the value is always interpreted as a decimal
+number.  The hour must be between zero and 24, and the minutes (and
+seconds) \(em if present \(em between zero and 59.  If preceded by a
+.Pq Ql \-
+the time zone shall be east of the Prime Meridian; otherwise it shall be
+west (which may be indicated by an optional preceding
+.Pq Ql + ) .
+.It Em rule
+Indicates when to change to and back from summer time.  The
+.Em rule
+has the form:
+.Bd -filled -offset indent
+.Em date/time,date/time
+.Ed
+.Pp
+where the first
+.Em date
+describes when the change from standard to summer time occurs and the
+second
+.Em date
+describes when the change back happens.  Each
+.Em time
+field describes when, in current local time, the change to the other
+time is made.
+.Pp
+The format of
+.Em date
+is one of the following:
+.Bl -tag -width "M.m.n.d"
+.It Sy J Em n
+The Julian day
+.Em n
+(1 \*(Le
+.Em n
+\*(Le 365).
+Leap days are not counted; that is, in all years \(em including leap
+years \(em February 28 is day 59 and March 1 is day 60.  It is
+impossible to explicitly refer to the occasional February 29.
+.It Em n
+The zero-based Julian day
+(0 \*(Le
+.Em n
+\*(Le 365 ) .
+Leap days are counted, and it is possible to refer to February 29.
+.It Sy M  Em m.n.d
+The
+.Em d Ns 'th
+day (0 \*(Le
+.Em d
+\*(Le 6 )
+of week
+.Em n
+of month
+.Em m
+of the year
+(1 \*(Le
+.Em n
+\*(Le 5),
+(1 \*(Le
+.Em m
+\*(Le 12),
+where week 5 means
+.Do
+the last
+.Em d
+day in month
+.Em m
+.Dc
+which may occur in either the fourth or the fifth week).  Week 1 is the
+first week in which the
+.Em d Ns 'th
+day occurs.  Day zero is Sunday.
+.Pp
+The
+.Em time
+has the same format as
+.Em offset
+except that no leading sign
+.Pq Ql \-
+or
+.Pq Ql +
+is allowed.  The default, if
+.Em time
+is not given, is
+.Sy 02:00:00 .
+.El
+.Pp
+If no
+.Em rule
+is present in the
+.Ev TZ
+specification, the rules specified
+by the
+.Xr tzfile 5 Ns -format
+file
+.Em posixrules
+in the system time conversion information directory are used, with the
+standard and summer time offsets from
+.Tn UTC
+replaced by those specified by
+the
+.Em offset
+values in
+.Ev TZ .
+.El
+.Pp
+For compatibility with System V Release 3.1, a semicolon
+.Pq Ql ;
+may be used to separate the
+.Em rule
+from the rest of the specification.
+.Sh FILES
+.Bl -tag -width /usr/share/zoneinfo/posixrules -compact
+.It Pa /etc/localtime
+local time zone file
+.It Pa /usr/share/zoneinfo
+time zone directory
+.It Pa /usr/share/zoneinfo/posixrules
+rules for
+.Tn POSIX Ns -style
+.Tn TZ Ns 's
+.It Pa /usr/share/zoneinfo/GMT	for
+.Tn UTC
+leap seconds
+.El
+.Pp
+If the file
+.Pa /usr/share/zoneinfo/GMT
+does not exist,
+.Tn UTC
+leap seconds are loaded from
+.Pa /usr/share/zoneinfo/posixrules .
+.Sh SEE ALSO
+.Xr date 1 ,
+.Xr gettimeofday 2 ,
+.Xr ctime 3 ,
+.Xr getenv 3 ,
+.Xr time 3 ,
+.Xr tzfile 5
+.Sh HISTORY
+The
+.Nm tzset
+and
+.Nm tzsetwall
+functions first appeared in 4.4BSD.
diff --git a/lib/libc/gen/ualarm.3 b/lib/libc/gen/ualarm.3
new file mode 100644
index 0000000..666029a
--- /dev/null
+++ b/lib/libc/gen/ualarm.3
@@ -0,0 +1,90 @@
+.\" Copyright (c) 1986, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)ualarm.3	8.2 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt UALARM 3
+.Os BSD 4.3
+.Sh NAME
+.Nm ualarm
+.Nd schedule signal after specified time
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft u_int 
+.Fn ualarm "u_int microseconds" "u_int interval"
+.Sh DESCRIPTION
+.Bf -symbolic
+This is a simplified interface to setitimer(2).
+.Ef
+.Pp
+The
+.Fn ualarm
+function
+waits a count of
+.Ar microseconds
+before asserting the terminating signal
+.Dv SIGALRM .
+System activity or time used in processing the call may cause a slight
+delay.
+.Pp
+If the
+.Fa interval
+argument is non-zero, the
+.Dv SIGALRM
+signal will be sent
+to the process every
+.Fa interval
+microseconds after the timer expires (e.g. after
+.Fa value
+microseconds have passed).
+.Sh RETURN VALUES
+When the signal has successfully been caught,
+.Fn alarm
+returns the amount of time left on the clock.
+The maximum number of
+.Ar microseconds
+allowed
+is 2147483647.
+.Sh SEE ALSO
+.Xr getitimer 2 ,
+.Xr setitimer 2 ,
+.Xr sigpause 2 ,
+.Xr sigvec 2 ,
+.Xr signal 3 ,
+.Xr sleep 3 ,
+.Xr alarm 3 ,
+.Xr usleep 3
+.Sh HISTORY
+The
+.Fn ualarm
+function appeared in 
+.Bx 4.3 .
diff --git a/lib/libc/gen/ualarm.c b/lib/libc/gen/ualarm.c
new file mode 100644
index 0000000..ec49a2d
--- /dev/null
+++ b/lib/libc/gen/ualarm.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 1985, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ualarm.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/time.h>
+#include <unistd.h>
+
+#define	USPS	1000000		/* # of microseconds in a second */
+
+/*
+ * Generate a SIGALRM signal in ``usecs'' microseconds.
+ * If ``reload'' is non-zero, keep generating SIGALRM
+ * every ``reload'' microseconds after the first signal.
+ */
+unsigned
+ualarm(usecs, reload)
+	register unsigned usecs;
+	register unsigned reload;
+{
+	struct itimerval new, old;
+
+	new.it_interval.tv_usec = reload % USPS;
+	new.it_interval.tv_sec = reload / USPS;
+
+	new.it_value.tv_usec = usecs % USPS;
+	new.it_value.tv_sec = usecs / USPS;
+
+	if (setitimer(ITIMER_REAL, &new, &old) == 0)
+		return (old.it_value.tv_sec * USPS + old.it_value.tv_usec);
+	/* else */
+		return (-1);
+}
diff --git a/lib/libc/gen/uname.3 b/lib/libc/gen/uname.3
new file mode 100644
index 0000000..a72e21f
--- /dev/null
+++ b/lib/libc/gen/uname.3
@@ -0,0 +1,92 @@
+.\" Copyright (c) 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)uname.3	8.1 (Berkeley) 1/4/94
+.\"
+.Dd "January 4, 1994"
+.Dt UNAME 3
+.Os
+.Sh NAME
+.Nm uname
+.Nd get system identification
+.Sh SYNOPSIS
+.Fd #include <sys/utsname.h>
+.Ft int
+.Fn uname "struct utsname *name"
+.Sh DESCRIPTION
+The
+.Fn uname
+function stores nul-terminated strings of information identifying
+the current system into the structure referenced by
+.Fa name .
+.Pp
+The
+.Li utsname
+structure is defined in the
+.Li <sys/utsname.h>
+header file, and contains the following members:
+.Bl -tag -width nodenameXXXX -offset indent
+.It sysname
+Name of the operating system implementation.
+.It nodename
+Network name of this machine.
+.It release
+Release level of the operating system.
+.It version
+Version level of the operating system.
+.It machine
+Machine hardware platform.
+.El
+.Sh RETURN VALUES
+If
+.Nm uname
+is successful, 0 is returned, otherwise, -1 is returned and
+.Va errno
+is set appropriately.
+.Sh ERRORS
+The
+.Fn uname
+function may fail and set
+.Va errno
+for any of the errors specified for the library functions
+.Xr sysctl 3 .
+.Sh SEE ALSO
+.Xr uname 1 ,
+.Xr sysctl 3
+.Sh STANDARDS
+The
+.Fn uname
+function conforms to
+.St -p1003.1-88 .
+.Sh HISTORY
+The
+.Nm uname
+function first appeared in 4.4BSD.
diff --git a/lib/libc/gen/uname.c b/lib/libc/gen/uname.c
new file mode 100644
index 0000000..93f659e
--- /dev/null
+++ b/lib/libc/gen/uname.c
@@ -0,0 +1,125 @@
+/*-
+ * Copyright (c) 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char sccsid[] = "From: @(#)uname.c	8.1 (Berkeley) 1/4/94";*/
+static const char rcsid[] =
+	"$Id: uname.c,v 1.3 1995/05/30 05:40:29 rgrimes Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/utsname.h>
+#include <errno.h>
+
+int
+uname(name)
+	struct utsname *name;
+{
+	int mib[2], rval;
+	size_t len;
+	char *p;
+	int oerrno;
+
+	rval = 0;
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_OSTYPE;
+	len = sizeof(name->sysname);
+	oerrno = errno;
+	if (sysctl(mib, 2, &name->sysname, &len, NULL, 0) == -1) {
+		if(errno == ENOMEM)
+			errno = oerrno;
+		else
+			rval = -1;
+	}
+	name->sysname[sizeof(name->sysname) - 1] = '\0';
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_HOSTNAME;
+	len = sizeof(name->nodename);
+	oerrno = errno;
+	if (sysctl(mib, 2, &name->nodename, &len, NULL, 0) == -1) {
+		if(errno == ENOMEM)
+			errno = oerrno;
+		else
+			rval = -1;
+	}
+	name->nodename[sizeof(name->nodename) - 1] = '\0';
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_OSRELEASE;
+	len = sizeof(name->release);
+	oerrno = errno;
+	if (sysctl(mib, 2, &name->release, &len, NULL, 0) == -1) {
+		if(errno == ENOMEM)
+			errno = oerrno;
+		else
+			rval = -1;
+	}
+	name->release[sizeof(name->release) - 1] = '\0';
+
+	/* The version may have newlines in it, turn them into spaces. */
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_VERSION;
+	len = sizeof(name->version);
+	oerrno = errno;
+	if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1) {
+		if (errno == ENOMEM)
+			errno = oerrno;
+		else
+			rval = -1;
+	}
+	name->version[sizeof(name->version) - 1] = '\0';
+	for (p = name->version; len--; ++p) {
+		if (*p == '\n' || *p == '\t') {
+			if (len > 1)
+				*p = ' ';
+			else
+				*p = '\0';
+		}
+	}
+
+	mib[0] = CTL_HW;
+	mib[1] = HW_MACHINE;
+	len = sizeof(name->machine);
+	oerrno = errno;
+	if (sysctl(mib, 2, &name->machine, &len, NULL, 0) == -1) {
+		if (errno == ENOMEM)
+			errno = oerrno;
+		else
+			rval = -1;
+	}
+	name->machine[sizeof(name->machine) - 1] = '\0';
+	return (rval);
+}
diff --git a/lib/libc/gen/unvis.3 b/lib/libc/gen/unvis.3
new file mode 100644
index 0000000..807a851
--- /dev/null
+++ b/lib/libc/gen/unvis.3
@@ -0,0 +1,162 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)unvis.3	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt UNVIS 3
+.Os
+.Sh NAME
+.Nm unvis ,
+.Nm strunvis
+.Nd decode a visual representation of characters
+.Sh SYNOPSIS
+.Fd #include <vis.h>
+.Ft int 
+.Fn unvis "u_char *cp" "u_char c" "int *astate" "int flag"
+.Ft int 
+.Fn strunvis "char *dst" "char *src"
+.Sh DESCRIPTION
+The
+.Fn unvis
+and
+.Fn strunvis
+functions
+are used to decode a visual representation of characters, as produced
+by the
+.Xr vis 3
+function, back into
+the original form.  Unvis is called with successive characters in
+.Ar c 
+until a valid
+sequence is recognized, at which time the decoded character is
+available at the character pointed to by
+.Ar cp .
+Strunvis decodes the
+characters pointed to by
+.Ar src
+into the buffer pointed to by
+.Ar dst .
+.Pp
+The
+.Fn strunvis
+function
+simply copies
+.Ar src
+to
+.Ar dst ,
+decoding any escape sequences along the way,
+and returns the number of characters placed into
+.Ar dst ,
+or \-1 if an
+invalid escape sequence was detected.  The size of
+.Ar dst
+should be
+equal to the size of
+.Ar src
+(that is, no expansion takes place during
+decoding).
+.Pp
+The
+.Fn unvis
+function
+implements a state machine that can be used to decode an arbitrary
+stream of bytes.  All state associated with the bytes being decoded
+is stored outside the
+.Fn unvis
+function (that is, a pointer to the state is passed in), so
+calls decoding different streams can be freely intermixed.  To
+start decoding a stream of bytes, first initialize an integer
+to zero.  Call
+.Fn unvis
+with each successive byte, along with a pointer
+to this integer, and a pointer to a destination character.
+The
+.Xr unvis
+function
+has several return codes that must be handled properly.  They are:
+.Bl -tag -width UNVIS_VALIDPUSH
+.It Li \&0 (zero)
+Another character is necessary; nothing has been recognized yet.
+.It Dv  UNVIS_VALID	
+A valid character has been recognized and is available at the location
+pointed to by cp.
+.It Dv  UNVIS_VALIDPUSH
+A valid character has been recognized and is available at the location
+pointed to by cp; however, the character currently passed in should
+be passed in again.
+.It Dv  UNVIS_NOCHAR
+A valid sequence was detected, but no character was produced.  This
+return code is necessary to indicate a logical break between characters.
+.It Dv  UNVIS_SYNBAD
+An invalid escape sequence was detected, or the decoder is in an
+unknown state.  The decoder is placed into the starting state.
+.El
+.Pp
+When all bytes in the stream have been processed, call
+.Fn unvis
+one more time with flag set to
+.Dv UNVIS_END
+to extract any remaining character (the character passed in is ignored).
+.Pp
+The following code fragment illustrates a proper use of
+.Fn unvis .
+.Bd -literal -offset indent
+int state = 0;
+char out;
+
+while ((ch = getchar()) != EOF) {
+again:
+	switch(unvis(&out, ch, &state, 0)) {
+	case 0:
+	case UNVIS_NOCHAR:
+		break;
+	case UNVIS_VALID:
+		(void) putchar(out);
+		break;
+	case UNVIS_VALIDPUSH:
+		(void) putchar(out);
+		goto again;
+	case UNVIS_SYNBAD:
+		(void)fprintf(stderr, "bad sequence!\n");
+	exit(1);
+	}
+}
+if (unvis(&out, (char)0, &state, UNVIS_END) == UNVIS_VALID)
+	(void) putchar(out);
+.Ed
+.Sh SEE ALSO
+.Xr vis 1
+.Sh HISTORY
+The
+.Nm unvis
+function
+first appeared in 4.4BSD.
diff --git a/lib/libc/gen/unvis.c b/lib/libc/gen/unvis.c
new file mode 100644
index 0000000..ebeb771
--- /dev/null
+++ b/lib/libc/gen/unvis.c
@@ -0,0 +1,247 @@
+/*-
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)unvis.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <vis.h>
+
+/*
+ * decode driven by state machine
+ */
+#define	S_GROUND	0	/* haven't seen escape char */
+#define	S_START		1	/* start decoding special sequence */
+#define	S_META		2	/* metachar started (M) */
+#define	S_META1		3	/* metachar more, regular char (-) */
+#define	S_CTRL		4	/* control char started (^) */
+#define	S_OCTAL2	5	/* octal digit 2 */
+#define	S_OCTAL3	6	/* octal digit 3 */
+
+#define	isoctal(c)	(((u_char)(c)) >= '0' && ((u_char)(c)) <= '7')
+
+/*
+ * unvis - decode characters previously encoded by vis
+ */
+int
+unvis(cp, c, astate, flag)
+	char *cp;
+	int c, *astate, flag;
+{
+
+	if (flag & UNVIS_END) {
+		if (*astate == S_OCTAL2 || *astate == S_OCTAL3) {
+			*astate = S_GROUND;
+			return (UNVIS_VALID);
+		}
+		return (*astate == S_GROUND ? UNVIS_NOCHAR : UNVIS_SYNBAD);
+	}
+
+	switch (*astate) {
+
+	case S_GROUND:
+		*cp = 0;
+		if (c == '\\') {
+			*astate = S_START;
+			return (0);
+		}
+		*cp = c;
+		return (UNVIS_VALID);
+
+	case S_START:
+		switch(c) {
+		case '\\':
+			*cp = c;
+			*astate = S_GROUND;
+			return (UNVIS_VALID);
+		case '0': case '1': case '2': case '3':
+		case '4': case '5': case '6': case '7':
+			*cp = (c - '0');
+			*astate = S_OCTAL2;
+			return (0);
+		case 'M':
+			*cp = 0200;
+			*astate = S_META;
+			return (0);
+		case '^':
+			*astate = S_CTRL;
+			return (0);
+		case 'n':
+			*cp = '\n';
+			*astate = S_GROUND;
+			return (UNVIS_VALID);
+		case 'r':
+			*cp = '\r';
+			*astate = S_GROUND;
+			return (UNVIS_VALID);
+		case 'b':
+			*cp = '\b';
+			*astate = S_GROUND;
+			return (UNVIS_VALID);
+		case 'a':
+			*cp = '\007';
+			*astate = S_GROUND;
+			return (UNVIS_VALID);
+		case 'v':
+			*cp = '\v';
+			*astate = S_GROUND;
+			return (UNVIS_VALID);
+		case 't':
+			*cp = '\t';
+			*astate = S_GROUND;
+			return (UNVIS_VALID);
+		case 'f':
+			*cp = '\f';
+			*astate = S_GROUND;
+			return (UNVIS_VALID);
+		case 's':
+			*cp = ' ';
+			*astate = S_GROUND;
+			return (UNVIS_VALID);
+		case 'E':
+			*cp = '\033';
+			*astate = S_GROUND;
+			return (UNVIS_VALID);
+		case '\n':
+			/*
+			 * hidden newline
+			 */
+			*astate = S_GROUND;
+			return (UNVIS_NOCHAR);
+		case '$':
+			/*
+			 * hidden marker
+			 */
+			*astate = S_GROUND;
+			return (UNVIS_NOCHAR);
+		}
+		*astate = S_GROUND;
+		return (UNVIS_SYNBAD);
+
+	case S_META:
+		if (c == '-')
+			*astate = S_META1;
+		else if (c == '^')
+			*astate = S_CTRL;
+		else {
+			*astate = S_GROUND;
+			return (UNVIS_SYNBAD);
+		}
+		return (0);
+
+	case S_META1:
+		*astate = S_GROUND;
+		*cp |= c;
+		return (UNVIS_VALID);
+
+	case S_CTRL:
+		if (c == '?')
+			*cp |= 0177;
+		else
+			*cp |= c & 037;
+		*astate = S_GROUND;
+		return (UNVIS_VALID);
+
+	case S_OCTAL2:	/* second possible octal digit */
+		if (isoctal(c)) {
+			/*
+			 * yes - and maybe a third
+			 */
+			*cp = (*cp << 3) + (c - '0');
+			*astate = S_OCTAL3;
+			return (0);
+		}
+		/*
+		 * no - done with current sequence, push back passed char
+		 */
+		*astate = S_GROUND;
+		return (UNVIS_VALIDPUSH);
+
+	case S_OCTAL3:	/* third possible octal digit */
+		*astate = S_GROUND;
+		if (isoctal(c)) {
+			*cp = (*cp << 3) + (c - '0');
+			return (UNVIS_VALID);
+		}
+		/*
+		 * we were done, push back passed char
+		 */
+		return (UNVIS_VALIDPUSH);
+
+	default:
+		/*
+		 * decoder in unknown state - (probably uninitialized)
+		 */
+		*astate = S_GROUND;
+		return (UNVIS_SYNBAD);
+	}
+}
+
+/*
+ * strunvis - decode src into dst
+ *
+ *	Number of chars decoded into dst is returned, -1 on error.
+ *	Dst is null terminated.
+ */
+
+int
+strunvis(dst, src)
+	register char *dst;
+	register const char *src;
+{
+	register char c;
+	char *start = dst;
+	int state = 0;
+
+	while (c = *src++) {
+	again:
+		switch (unvis(dst, c, &state, 0)) {
+		case UNVIS_VALID:
+			dst++;
+			break;
+		case UNVIS_VALIDPUSH:
+			dst++;
+			goto again;
+		case 0:
+		case UNVIS_NOCHAR:
+			break;
+		default:
+			return (-1);
+		}
+	}
+	if (unvis(dst, c, &state, UNVIS_END) == UNVIS_VALID)
+		dst++;
+	*dst = '\0';
+	return (dst - start);
+}
diff --git a/lib/libc/gen/usleep.3 b/lib/libc/gen/usleep.3
new file mode 100644
index 0000000..630e386
--- /dev/null
+++ b/lib/libc/gen/usleep.3
@@ -0,0 +1,85 @@
+.\" Copyright (c) 1986, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)usleep.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt USLEEP 3
+.Os BSD 4.3
+.Sh NAME
+.Nm usleep
+.Nd suspend execution for interval of microseconds
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft void
+.Fn usleep "u_int microseconds"
+.Sh DESCRIPTION
+The
+.Fn usleep
+function
+suspends execution of the calling process
+for
+.Fa microseconds
+of time.
+System activity or time spent in processing the
+call may lengthen the sleep slightly.
+.Pp
+If a timer is already running on the process its state is saved.
+If the value
+.Fa microseconds
+is more than or equal to the remaining clock time for the saved timer,
+the sleep time is set to
+the remaining clock time.
+The state of the previous timer
+is restored after
+.Fa microseconds
+has passed.
+.Pp
+This routine is implemented using 
+.Xr setitimer 2 ;
+it requires eight system calls each time it is invoked.
+A similar but less compatible function can be obtained with a single
+.Xr select 2 ;
+such a function would not restart after signals, but would not interfere
+with other uses of
+.Xr setitimer .
+.Sh SEE ALSO
+.Xr setitimer 2 ,
+.Xr getitimer 2 ,
+.Xr sigpause 2 ,
+.Xr ualarm 3 ,
+.Xr sleep 3 ,
+.Xr alarm 3
+.Sh HISTORY
+The
+.Fn usleep
+function appeared in 
+.Bx 4.3 .
diff --git a/lib/libc/gen/usleep.c b/lib/libc/gen/usleep.c
new file mode 100644
index 0000000..3f4a7f5
--- /dev/null
+++ b/lib/libc/gen/usleep.c
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)usleep.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/time.h>
+#include <signal.h>
+#include <unistd.h>
+
+#define	TICK	10000		/* system clock resolution in microseconds */
+#define	USPS	1000000		/* number of microseconds in a second */
+
+#define	setvec(vec, a) \
+	vec.sv_handler = a; vec.sv_mask = vec.sv_onstack = 0
+
+static int ringring;
+
+void
+usleep(useconds)
+	unsigned int useconds;
+{
+	register struct itimerval *itp;
+	struct itimerval itv, oitv;
+	struct sigvec vec, ovec;
+	long omask;
+	static void sleephandler();
+
+	itp = &itv;
+	if (!useconds)
+		return;
+	timerclear(&itp->it_interval);
+	timerclear(&itp->it_value);
+	if (setitimer(ITIMER_REAL, itp, &oitv) < 0)
+		return;
+	itp->it_value.tv_sec = useconds / USPS;
+	itp->it_value.tv_usec = useconds % USPS;
+	if (timerisset(&oitv.it_value)) {
+		if (timercmp(&oitv.it_value, &itp->it_value, >)) {
+			oitv.it_value.tv_sec -= itp->it_value.tv_sec;
+			oitv.it_value.tv_usec -= itp->it_value.tv_usec;
+			if (oitv.it_value.tv_usec < 0) {
+				oitv.it_value.tv_usec += USPS;
+				oitv.it_value.tv_sec--;
+			}
+		} else {
+			itp->it_value = oitv.it_value;
+			oitv.it_value.tv_sec = 0;
+			oitv.it_value.tv_usec = 2 * TICK;
+		}
+	}
+	setvec(vec, sleephandler);
+	(void) sigvec(SIGALRM, &vec, &ovec);
+	omask = sigblock(sigmask(SIGALRM));
+	ringring = 0;
+	(void) setitimer(ITIMER_REAL, itp, (struct itimerval *)0);
+	while (!ringring)
+		sigpause(omask &~ sigmask(SIGALRM));
+	(void) sigvec(SIGALRM, &ovec, (struct sigvec *)0);
+	(void) sigsetmask(omask);
+	(void) setitimer(ITIMER_REAL, &oitv, (struct itimerval *)0);
+}
+
+static void
+sleephandler()
+{
+	ringring = 1;
+}
diff --git a/lib/libc/gen/utime.3 b/lib/libc/gen/utime.3
new file mode 100644
index 0000000..3397bb7
--- /dev/null
+++ b/lib/libc/gen/utime.3
@@ -0,0 +1,87 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)utime.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt UTIME 3
+.Os BSD 4
+.Sh NAME
+.Nm utime
+.Nd set file times
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <utime.h>
+.Ft int
+.Fn utime "const char *file" "const struct utimbuf *timep"
+.Sh DESCRIPTION
+.Bf -symbolic
+This interface is obsoleted by utimes(2) .
+.Ef
+.Pp
+The
+.Fn utime
+function sets the access and modification times of the named file from
+the structures in the argument array
+.Fa timep .
+.Pp
+If the times are specified (the
+.Fa timep
+argument is
+.Pf non- Dv NULL )
+the caller must be the owner of the file or be the super-user.
+.Pp
+If the times are not specified (the
+.Fa timep
+argument is
+.Dv NULL )
+the caller must be the owner of the file, have permission to write
+the file, or be the super-user.
+.Sh ERRORS
+The
+.Fn utime
+function may fail and set
+.Va errno
+for any of the errors specified for the library function
+.Xr utimes 2 .
+.Sh SEE ALSO
+.Xr utimes 2 ,
+.Xr stat 2
+.Sh HISTORY
+A
+.Fn utime
+function appeared in 
+.At v7 .
+.Sh STANDARDS
+The
+.Nm utime
+function conforms to
+.St -p1003.1-88 .
diff --git a/lib/libc/gen/utime.c b/lib/libc/gen/utime.c
new file mode 100644
index 0000000..a561fd6
--- /dev/null
+++ b/lib/libc/gen/utime.c
@@ -0,0 +1,57 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)utime.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/time.h>
+
+#include <utime.h>
+
+int
+utime(path, times)
+	const char *path;
+	const struct utimbuf *times;
+{
+	struct timeval tv[2], *tvp;
+
+	if (times) {
+		tv[0].tv_sec = times->actime;
+		tv[1].tv_sec = times->modtime;
+		tv[0].tv_usec = tv[1].tv_usec = 0;
+		tvp = tv;
+	} else
+		tvp = NULL;
+	return (utimes(path, tvp));
+}
diff --git a/lib/libc/gen/valloc.3 b/lib/libc/gen/valloc.3
new file mode 100644
index 0000000..c428552
--- /dev/null
+++ b/lib/libc/gen/valloc.3
@@ -0,0 +1,75 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)valloc.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt VALLOC 3
+.Os BSD 3
+.Sh NAME
+.Nm valloc
+.Nd aligned memory allocation function
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft char *
+.Fn valloc "unsigned size"
+.Sh DESCRIPTION
+.Bf -symbolic
+Valloc is obsoleted by the current version of malloc(3),
+which aligns page-sized and larger allocations.
+.Ef
+.Pp
+The
+.Fn valloc
+function
+allocates
+.Fa size
+bytes aligned on a page boundary.
+It is implemented by calling
+.Xr malloc 3
+with a slightly larger request, saving the true beginning of the block
+allocated, and returning a properly aligned pointer.
+.Sh RETURN VALUES
+The
+.Fn valloc
+function returns
+a pointer to the allocated space if successful; otherwise
+a null pointer is returned
+.Sh HISTORY
+The
+.Fn valloc
+function appeared in 
+.Bx 3.0 .
+.Sh BUGS
+A
+.Em vfree
+function
+has not been implemented.
diff --git a/lib/libc/gen/valloc.c b/lib/libc/gen/valloc.c
new file mode 100644
index 0000000..ec6e2e8
--- /dev/null
+++ b/lib/libc/gen/valloc.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 1980, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)valloc.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdlib.h>
+#include <unistd.h>
+
+void *
+valloc(i)
+	size_t i;
+{
+	int valsiz = getpagesize(), j;
+	void *cp = malloc(i + (valsiz-1));
+
+	j = ((int)cp + (valsiz-1)) &~ (valsiz-1);
+	return ((void *)j);
+}
diff --git a/lib/libc/gen/vis.3 b/lib/libc/gen/vis.3
new file mode 100644
index 0000000..ee77b72
--- /dev/null
+++ b/lib/libc/gen/vis.3
@@ -0,0 +1,263 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)vis.3	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt VIS 3
+.Os
+.Sh NAME
+.Nm vis
+.Nd visually encode characters
+.Sh SYNOPSIS
+.Fd #include <vis.h>
+.Ft char *
+.Fn vis "char *dst" "char c" "int flag" "char nextc"
+.Ft int 
+.Fn strvis "char *dst" "char *src" "int flag"
+.Ft int 
+.Fn strvisx "char *dst" "char *src" "int len" "int flag"
+.Sh DESCRIPTION
+The
+.Fn vis
+function
+copies into
+.Fa dst
+a string which represents the character
+.Fa c .
+If
+.Fa c
+needs no encoding, it is copied in unaltered.  The string is
+null terminated, and a pointer to the end of the string is
+returned.  The maximum length of any encoding is four
+characters (not including the trailing
+.Dv NULL ) ; 
+thus, when
+encoding a set of characters into a buffer, the size of the buffer should
+be four times the number of characters encoded, plus one for the trailing
+.Dv NULL . 
+The flag parameter is used for altering the default range of
+characters considered for encoding and for altering the visual
+representation.
+The additional character,
+.Fa nextc ,
+is only used when selecting the
+.Dv VIS_CSTYLE
+encoding format (explained below).
+.Pp
+The
+.Fn strvis
+and
+.Fn strvisx
+functions copy into
+.Fa dst
+a visual representation of
+the string
+.Fa src .
+The
+.Fn strvis
+function encodes characters from
+.Fa src
+up to the
+first
+.Dv NULL . 
+The
+.Fn strvisx
+function encodes exactly
+.Fa len
+characters from
+.Fa src
+(this
+is useful for encoding a block of data that may contain
+.Dv NULL Ns 's).
+Both forms
+.Dv NULL
+terminate
+.Fa dst .
+The size of
+.Fa dst
+must be four times the number
+of characters encoded from
+.Fa src
+(plus one for the
+.Dv NULL ) . 
+Both
+forms return the number of characters in dst (not including
+the trailing
+.Dv NULL ) . 
+.Pp
+The encoding is a unique, invertible representation comprised entirely of
+graphic characters; it can be decoded back into the original form using 
+the
+.Xr unvis 3
+or
+.Xr strunvis 3
+functions.
+.Pp
+There are two parameters that can be controlled: the range of
+characters that are encoded, and the type
+of representation used.  
+By default, all non-graphic characters.
+except space, tab, and newline are encoded.
+(See
+.Xr isgraph 3 . )
+The following flags
+alter this:
+.Bl -tag -width VIS_WHITEX
+.It Dv VIS_SP
+Also encode space.
+.It Dv VIS_TAB		
+Also encode tab.
+.It Dv VIS_NL
+Also encode newline.
+.It Dv VIS_WHITE	
+Synonym for
+.Dv VIS_SP
+\&|
+.Dv VIS_TAB
+\&|
+.Dv VIS_NL .
+.It Dv VIS_SAFE	
+Only encode "unsafe" characters.  Unsafe means control
+characters which may cause common terminals to perform
+unexpected functions.  Currently this form allows space,
+tab, newline, backspace, bell, and return - in addition
+to all graphic characters - unencoded. 
+.El
+.Pp
+There are three forms of encoding.
+All forms use the backslash character
+.Ql \e
+to introduce a special
+sequence; two backslashes are used to represent a real backslash.
+These are the visual formats:
+.Bl -tag -width VIS_CSTYLE
+.It (default)
+Use an
+.Ql M
+to represent meta characters (characters with the 8th
+bit set), and use carat
+.Ql ^
+to represent control characters see
+.Pf ( Xr iscntrl 3 ) .
+The following formats are used:
+.Bl -tag -width xxxxx
+.It Dv \e^C
+Represents the control character
+.Ql C .
+Spans characters
+.Ql \e000
+through
+.Ql \e037 ,
+and
+.Ql \e177
+(as
+.Ql \e^? ) .
+.It Dv \eM-C
+Represents character
+.Ql C
+with the 8th bit set.
+Spans characters
+.Ql \e241
+through
+.Ql \e376 .
+.It Dv \eM^C
+Represents control character
+.Ql C
+with the 8th bit set.
+Spans characters
+.Ql \e200
+through
+.Ql \e237 ,
+and
+.Ql \e377
+(as
+.Ql \eM^? ) .
+.It Dv \e040
+Represents
+.Tn ASCII
+space.
+.It Dv \e240
+Represents Meta-space.
+.El
+.Pp
+.It Dv VIS_CSTYLE
+Use C-style backslash sequences to represent standard non-printable
+characters.
+The following sequences are used to represent the indicated characters:
+.Bd -unfilled -offset indent
+.Li \ea Tn  - BEL No (007)
+.Li \eb Tn  - BS No (010)
+.Li \ef Tn  - NP No (014)
+.Li \en Tn  - NL No (012)
+.Li \er Tn  - CR No (015)
+.Li \et Tn  - HT No (011)
+.Li \ev Tn  - VT No (013)
+.Li \e0 Tn  - NUL No (000)
+.Ed
+.Pp
+When using this format, the nextc parameter is looked at to determine
+if a
+.Dv NULL
+character can be encoded as
+.Ql \e0
+instead of
+.Ql \e000 .
+If
+.Fa nextc
+is an octal digit, the latter representation is used to
+avoid ambiguity.
+.It Dv VIS_OCTAL
+Use a three digit octal sequence.  The form is
+.Ql \eddd
+where
+.Em d
+represents an octal digit.
+.El
+.Pp
+There is one additional flag,
+.Dv VIS_NOSLASH ,
+which inhibits the
+doubling of backslashes and the backslash before the default
+format (that is, control characters are represented by
+.Ql ^C
+and
+meta characters as
+.Ql M-C ) .
+With this flag set, the encoding is
+ambiguous and non-invertible.
+.Sh SEE ALSO
+.Xr unvis 1 ,
+.Xr unvis 3
+.Xr strunvis 3
+.Sh HISTORY
+These functions first appeared in 4.4BSD.
+
diff --git a/lib/libc/gen/vis.c b/lib/libc/gen/vis.c
new file mode 100644
index 0000000..066ea2d
--- /dev/null
+++ b/lib/libc/gen/vis.c
@@ -0,0 +1,186 @@
+/*-
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)vis.c	8.1 (Berkeley) 7/19/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <limits.h>
+#include <ctype.h>
+#include <vis.h>
+
+#define	isoctal(c)	(((u_char)(c)) >= '0' && ((u_char)(c)) <= '7')
+
+/*
+ * vis - visually encode characters
+ */
+char *
+vis(dst, c, flag, nextc)
+	register char *dst;
+	int c, nextc;
+	register int flag;
+{
+	if (isgraph(c) ||
+	   ((flag & VIS_SP) == 0 && c == ' ') ||
+	   ((flag & VIS_TAB) == 0 && c == '\t') ||
+	   ((flag & VIS_NL) == 0 && c == '\n') ||
+	   ((flag & VIS_SAFE) && (c == '\b' || c == '\007' || c == '\r'))) {
+		*dst++ = c;
+		if (c == '\\' && (flag & VIS_NOSLASH) == 0)
+			*dst++ = '\\';
+		*dst = '\0';
+		return (dst);
+	}
+
+	if (flag & VIS_CSTYLE) {
+		switch(c) {
+		case '\n':
+			*dst++ = '\\';
+			*dst++ = 'n';
+			goto done;
+		case '\r':
+			*dst++ = '\\';
+			*dst++ = 'r';
+			goto done;
+		case '\b':
+			*dst++ = '\\';
+			*dst++ = 'b';
+			goto done;
+#if __STDC__
+		case '\a':
+#else
+		case '\007':
+#endif
+			*dst++ = '\\';
+			*dst++ = 'a';
+			goto done;
+		case '\v':
+			*dst++ = '\\';
+			*dst++ = 'v';
+			goto done;
+		case '\t':
+			*dst++ = '\\';
+			*dst++ = 't';
+			goto done;
+		case '\f':
+			*dst++ = '\\';
+			*dst++ = 'f';
+			goto done;
+		case ' ':
+			*dst++ = '\\';
+			*dst++ = 's';
+			goto done;
+		case '\0':
+			*dst++ = '\\';
+			*dst++ = '0';
+			if (isoctal(nextc)) {
+				*dst++ = '0';
+				*dst++ = '0';
+			}
+			goto done;
+		}
+	}
+	if (((c & 0177) == ' ') || (flag & VIS_OCTAL)) {
+		*dst++ = '\\';
+		*dst++ = ((u_char)c >> 6 & 07) + '0';
+		*dst++ = ((u_char)c >> 3 & 07) + '0';
+		*dst++ = ((u_char)c & 07) + '0';
+		goto done;
+	}
+	if ((flag & VIS_NOSLASH) == 0)
+		*dst++ = '\\';
+	if (c & 0200) {
+		c &= 0177;
+		*dst++ = 'M';
+	}
+	if (iscntrl(c)) {
+		*dst++ = '^';
+		if (c == 0177)
+			*dst++ = '?';
+		else
+			*dst++ = c + '@';
+	} else {
+		*dst++ = '-';
+		*dst++ = c;
+	}
+done:
+	*dst = '\0';
+	return (dst);
+}
+
+/*
+ * strvis, strvisx - visually encode characters from src into dst
+ *
+ *	Dst must be 4 times the size of src to account for possible
+ *	expansion.  The length of dst, not including the trailing NULL,
+ *	is returned.
+ *
+ *	Strvisx encodes exactly len bytes from src into dst.
+ *	This is useful for encoding a block of data.
+ */
+int
+strvis(dst, src, flag)
+	register char *dst;
+	register const char *src;
+	int flag;
+{
+	register char c;
+	char *start;
+
+	for (start = dst; c = *src;)
+		dst = vis(dst, c, flag, *++src);
+	*dst = '\0';
+	return (dst - start);
+}
+
+int
+strvisx(dst, src, len, flag)
+	register char *dst;
+	register const char *src;
+	register size_t len;
+	int flag;
+{
+	int c;
+	char *start;
+
+	for (start = dst; len > 1; len--) {
+		c = *src;
+		dst = vis(dst, c, flag, *++src);
+	}
+	if (len)
+		dst = vis(dst, *src, flag, '\0');
+	*dst = '\0';
+
+	return (dst - start);
+}
diff --git a/lib/libc/gen/wait.c b/lib/libc/gen/wait.c
new file mode 100644
index 0000000..0bf5e8b
--- /dev/null
+++ b/lib/libc/gen/wait.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)wait.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <sys/resource.h>
+
+pid_t
+wait(istat)
+	int *istat;
+{
+	return (wait4(WAIT_ANY, istat, 0, (struct rusage *)0));
+}
diff --git a/lib/libc/gen/wait3.c b/lib/libc/gen/wait3.c
new file mode 100644
index 0000000..c8d8f9e
--- /dev/null
+++ b/lib/libc/gen/wait3.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)wait3.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <sys/resource.h>
+
+pid_t
+wait3(istat, options, rup)
+	int *istat;
+	int options;
+	struct rusage *rup;
+{
+	return (wait4(WAIT_ANY, istat, options, rup));
+}
diff --git a/lib/libc/gen/waitpid.c b/lib/libc/gen/waitpid.c
new file mode 100644
index 0000000..7af6a63
--- /dev/null
+++ b/lib/libc/gen/waitpid.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)waitpid.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <sys/resource.h>
+
+pid_t
+#if __STDC__
+waitpid(pid_t pid, int *istat, int options)
+#else
+waitpid(pid, istat, options)
+	pid_t pid;
+	int *istat;
+	int options;
+#endif
+{
+	return (wait4(pid, istat, options, (struct rusage *)0));
+}
diff --git a/lib/libc/gmon/Makefile.inc b/lib/libc/gmon/Makefile.inc
new file mode 100644
index 0000000..57dc293
--- /dev/null
+++ b/lib/libc/gmon/Makefile.inc
@@ -0,0 +1,12 @@
+#	@(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+
+# gmon sources
+.PATH: ${.CURDIR}/gmon
+
+SRCS+=	gmon.c mcount.c
+MAN3+=	gmon/moncontrol.3
+MLINKS+= moncontrol.3 monstartup.3
+
+# mcount cannot be compiled with profiling
+mcount.po: mcount.o
+	cp mcount.o mcount.po
diff --git a/lib/libc/gmon/gmon.c b/lib/libc/gmon/gmon.c
new file mode 100644
index 0000000..572b7eb
--- /dev/null
+++ b/lib/libc/gmon/gmon.c
@@ -0,0 +1,254 @@
+/*-
+ * Copyright (c) 1983, 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if !defined(lint) && defined(LIBC_SCCS)
+static char sccsid[] = "@(#)gmon.c	8.1 (Berkeley) 6/4/93";
+#endif
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/gmon.h>
+#include <sys/sysctl.h>
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+extern char *minbrk asm ("minbrk");
+
+struct gmonparam _gmonparam = { GMON_PROF_OFF };
+
+static int	s_scale;
+/* see profil(2) where this is describe (incorrectly) */
+#define		SCALE_1_TO_1	0x10000L
+
+#define ERR(s) write(2, s, sizeof(s))
+
+void	moncontrol __P((int));
+static int hertz __P((void));
+
+void
+monstartup(lowpc, highpc)
+	u_long lowpc;
+	u_long highpc;
+{
+	register int o;
+	char *cp;
+	struct gmonparam *p = &_gmonparam;
+
+	/*
+	 * round lowpc and highpc to multiples of the density we're using
+	 * so the rest of the scaling (here and in gprof) stays in ints.
+	 */
+	p->lowpc = ROUNDDOWN(lowpc, HISTFRACTION * sizeof(HISTCOUNTER));
+	p->highpc = ROUNDUP(highpc, HISTFRACTION * sizeof(HISTCOUNTER));
+	p->textsize = p->highpc - p->lowpc;
+	p->kcountsize = p->textsize / HISTFRACTION;
+	p->hashfraction = HASHFRACTION;
+	p->fromssize = p->textsize / HASHFRACTION;
+	p->tolimit = p->textsize * ARCDENSITY / 100;
+	if (p->tolimit < MINARCS)
+		p->tolimit = MINARCS;
+	else if (p->tolimit > MAXARCS)
+		p->tolimit = MAXARCS;
+	p->tossize = p->tolimit * sizeof(struct tostruct);
+
+	cp = sbrk(p->kcountsize + p->fromssize + p->tossize);
+	if (cp == (char *)-1) {
+		ERR("monstartup: out of memory\n");
+		return;
+	}
+#ifdef notdef
+	bzero(cp, p->kcountsize + p->fromssize + p->tossize);
+#endif
+	p->tos = (struct tostruct *)cp;
+	cp += p->tossize;
+	p->kcount = (u_short *)cp;
+	cp += p->kcountsize;
+	p->froms = (u_short *)cp;
+
+	minbrk = sbrk(0);
+	p->tos[0].link = 0;
+
+	o = p->highpc - p->lowpc;
+	if (p->kcountsize < o) {
+#ifndef hp300
+		s_scale = ((float)p->kcountsize / o ) * SCALE_1_TO_1;
+#else /* avoid floating point */
+		int quot = o / p->kcountsize;
+
+		if (quot >= 0x10000)
+			s_scale = 1;
+		else if (quot >= 0x100)
+			s_scale = 0x10000 / quot;
+		else if (o >= 0x800000)
+			s_scale = 0x1000000 / (o / (p->kcountsize >> 8));
+		else
+			s_scale = 0x1000000 / ((o << 8) / p->kcountsize);
+#endif
+	} else
+		s_scale = SCALE_1_TO_1;
+
+	moncontrol(1);
+}
+
+void
+_mcleanup()
+{
+	int fd;
+	int fromindex;
+	int endfrom;
+	u_long frompc;
+	int toindex;
+	struct rawarc rawarc;
+	struct gmonparam *p = &_gmonparam;
+	struct gmonhdr gmonhdr, *hdr;
+	struct clockinfo clockinfo;
+	int mib[2];
+	size_t size;
+#ifdef DEBUG
+	int log, len;
+	char buf[200];
+#endif
+
+	if (p->state == GMON_PROF_ERROR)
+		ERR("_mcleanup: tos overflow\n");
+
+	size = sizeof(clockinfo);
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_CLOCKRATE;
+	if (sysctl(mib, 2, &clockinfo, &size, NULL, 0) < 0) {
+		/*
+		 * Best guess
+		 */
+		clockinfo.profhz = hertz();
+	} else if (clockinfo.profhz == 0) {
+		if (clockinfo.hz != 0)
+			clockinfo.profhz = clockinfo.hz;
+		else
+			clockinfo.profhz = hertz();
+	}
+
+	moncontrol(0);
+	fd = open("gmon.out", O_CREAT|O_TRUNC|O_WRONLY, 0666);
+	if (fd < 0) {
+		perror("mcount: gmon.out");
+		return;
+	}
+#ifdef DEBUG
+	log = open("gmon.log", O_CREAT|O_TRUNC|O_WRONLY, 0664);
+	if (log < 0) {
+		perror("mcount: gmon.log");
+		return;
+	}
+	len = sprintf(buf, "[mcleanup1] kcount 0x%x ssiz %d\n",
+	    p->kcount, p->kcountsize);
+	write(log, buf, len);
+#endif
+	hdr = (struct gmonhdr *)&gmonhdr;
+	hdr->lpc = p->lowpc;
+	hdr->hpc = p->highpc;
+	hdr->ncnt = p->kcountsize + sizeof(gmonhdr);
+	hdr->version = GMONVERSION;
+	hdr->profrate = clockinfo.profhz;
+	write(fd, (char *)hdr, sizeof *hdr);
+	write(fd, p->kcount, p->kcountsize);
+	endfrom = p->fromssize / sizeof(*p->froms);
+	for (fromindex = 0; fromindex < endfrom; fromindex++) {
+		if (p->froms[fromindex] == 0)
+			continue;
+
+		frompc = p->lowpc;
+		frompc += fromindex * p->hashfraction * sizeof(*p->froms);
+		for (toindex = p->froms[fromindex]; toindex != 0;
+		     toindex = p->tos[toindex].link) {
+#ifdef DEBUG
+			len = sprintf(buf,
+			"[mcleanup2] frompc 0x%x selfpc 0x%x count %d\n" ,
+				frompc, p->tos[toindex].selfpc,
+				p->tos[toindex].count);
+			write(log, buf, len);
+#endif
+			rawarc.raw_frompc = frompc;
+			rawarc.raw_selfpc = p->tos[toindex].selfpc;
+			rawarc.raw_count = p->tos[toindex].count;
+			write(fd, &rawarc, sizeof rawarc);
+		}
+	}
+	close(fd);
+}
+
+/*
+ * Control profiling
+ *	profiling is what mcount checks to see if
+ *	all the data structures are ready.
+ */
+void
+moncontrol(mode)
+	int mode;
+{
+	struct gmonparam *p = &_gmonparam;
+
+	if (mode) {
+		/* start */
+		profil((char *)p->kcount, p->kcountsize, (int)p->lowpc,
+		    s_scale);
+		p->state = GMON_PROF_ON;
+	} else {
+		/* stop */
+		profil((char *)0, 0, 0, 0);
+		p->state = GMON_PROF_OFF;
+	}
+}
+
+/*
+ * discover the tick frequency of the machine
+ * if something goes wrong, we return 0, an impossible hertz.
+ */
+static int
+hertz()
+{
+	struct itimerval tim;
+
+	tim.it_interval.tv_sec = 0;
+	tim.it_interval.tv_usec = 1;
+	tim.it_value.tv_sec = 0;
+	tim.it_value.tv_usec = 0;
+	setitimer(ITIMER_REAL, &tim, 0);
+	setitimer(ITIMER_REAL, 0, &tim);
+	if (tim.it_interval.tv_usec < 2)
+		return(0);
+	return (1000000 / tim.it_interval.tv_usec);
+}
+
+
diff --git a/lib/libc/gmon/mcount.c b/lib/libc/gmon/mcount.c
new file mode 100644
index 0000000..b0c4072
--- /dev/null
+++ b/lib/libc/gmon/mcount.c
@@ -0,0 +1,326 @@
+/*-
+ * Copyright (c) 1983, 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if !defined(lint) && !defined(KERNEL) && defined(LIBC_SCCS)
+#if 0
+static char sccsid[] = "@(#)mcount.c	8.1 (Berkeley) 6/4/93";
+#endif
+static const char rcsid[] =
+	"$Id$";
+#endif
+
+#include <sys/param.h>
+#include <sys/gmon.h>
+#ifdef KERNEL
+#include <sys/systm.h>
+#include <vm/vm.h>
+#include <vm/vm_param.h>
+#include <vm/pmap.h>
+void	bintr __P((void));
+void	btrap __P((void));
+void	eintr __P((void));
+void	user __P((void));
+#endif
+
+/*
+ * mcount is called on entry to each function compiled with the profiling
+ * switch set.  _mcount(), which is declared in a machine-dependent way
+ * with _MCOUNT_DECL, does the actual work and is either inlined into a
+ * C routine or called by an assembly stub.  In any case, this magic is
+ * taken care of by the MCOUNT definition in <machine/profile.h>.
+ *
+ * _mcount updates data structures that represent traversals of the
+ * program's call graph edges.  frompc and selfpc are the return
+ * address and function address that represents the given call graph edge.
+ *
+ * Note: the original BSD code used the same variable (frompcindex) for
+ * both frompcindex and frompc.  Any reasonable, modern compiler will
+ * perform this optimization.
+ */
+_MCOUNT_DECL(frompc, selfpc)	/* _mcount; may be static, inline, etc */
+	register fptrint_t frompc, selfpc;
+{
+#ifdef GUPROF
+	u_int delta;
+#endif
+	register fptrdiff_t frompci;
+	register u_short *frompcindex;
+	register struct tostruct *top, *prevtop;
+	register struct gmonparam *p;
+	register long toindex;
+#ifdef KERNEL
+	register int s;		/* XXX */
+	u_long save_eflags;	/* XXX */
+#endif
+
+	p = &_gmonparam;
+#ifndef GUPROF			/* XXX */
+	/*
+	 * check that we are profiling
+	 * and that we aren't recursively invoked.
+	 */
+	if (p->state != GMON_PROF_ON)
+		return;
+#endif
+#ifdef KERNEL
+	MCOUNT_ENTER;
+#else
+	p->state = GMON_PROF_BUSY;
+#endif
+	frompci = frompc - p->lowpc;
+
+#ifdef KERNEL
+	/*
+	 * When we are called from an exception handler, frompci may be
+	 * for a user address.  Convert such frompci's to the index of
+	 * user() to merge all user counts.
+	 */
+	if (frompci >= p->textsize) {
+		if (frompci + p->lowpc
+		    >= (fptrint_t)(VM_MAXUSER_ADDRESS + UPAGES * NBPG))
+			goto done;
+		frompci = (fptrint_t)user - p->lowpc;
+		if (frompci >= p->textsize)
+		    goto done;
+	}
+#endif /* KERNEL */
+
+#ifdef GUPROF
+	if (p->state != GMON_PROF_HIRES)
+		goto skip_guprof_stuff;
+	/*
+	 * Look at the clock and add the count of clock cycles since the
+	 * clock was last looked at to a counter for frompc.  This
+	 * solidifies the count for the function containing frompc and
+	 * effectively starts another clock for the current function.
+	 * The count for the new clock will be solidified when another
+	 * function call is made or the function returns.
+	 *
+	 * We use the usual sampling counters since they can be located
+	 * efficiently.  4-byte counters are usually necessary.
+	 *
+	 * There are many complications for subtracting the profiling
+	 * overheads from the counts for normal functions and adding
+	 * them to the counts for mcount(), mexitcount() and cputime().
+	 * We attempt to handle fractional cycles, but the overheads
+	 * are usually underestimated because they are calibrated for
+	 * a simpler than usual setup.
+	 */
+	delta = cputime() - p->mcount_overhead;
+	p->cputime_overhead_resid += p->cputime_overhead_frac;
+	p->mcount_overhead_resid += p->mcount_overhead_frac;
+	if ((int)delta < 0)
+		*p->mcount_count += delta + p->mcount_overhead
+				    - p->cputime_overhead;
+	else if (delta != 0) {
+		if (p->cputime_overhead_resid >= CALIB_SCALE) {
+			p->cputime_overhead_resid -= CALIB_SCALE;
+			++*p->cputime_count;
+			--delta;
+		}
+		if (delta != 0) {
+			if (p->mcount_overhead_resid >= CALIB_SCALE) {
+				p->mcount_overhead_resid -= CALIB_SCALE;
+				++*p->mcount_count;
+				--delta;
+			}
+			KCOUNT(p, frompci) += delta;
+		}
+		*p->mcount_count += p->mcount_overhead_sub;
+	}
+	*p->cputime_count += p->cputime_overhead;
+skip_guprof_stuff:
+#endif /* GUPROF */
+
+#ifdef KERNEL
+	/*
+	 * When we are called from an exception handler, frompc is faked
+	 * to be for where the exception occurred.  We've just solidified
+	 * the count for there.  Now convert frompci to the index of btrap()
+	 * for trap handlers and bintr() for interrupt handlers to make
+	 * exceptions appear in the call graph as calls from btrap() and
+	 * bintr() instead of calls from all over.
+	 */
+	if ((fptrint_t)selfpc >= (fptrint_t)btrap
+	    && (fptrint_t)selfpc < (fptrint_t)eintr) {
+		if ((fptrint_t)selfpc >= (fptrint_t)bintr)
+			frompci = (fptrint_t)bintr - p->lowpc;
+		else
+			frompci = (fptrint_t)btrap - p->lowpc;
+	}
+#endif /* KERNEL */
+
+	/*
+	 * check that frompc is a reasonable pc value.
+	 * for example:	signal catchers get called from the stack,
+	 *		not from text space.  too bad.
+	 */
+	if (frompci >= p->textsize)
+		goto done;
+
+	frompcindex = &p->froms[frompci / (p->hashfraction * sizeof(*p->froms))];
+	toindex = *frompcindex;
+	if (toindex == 0) {
+		/*
+		 *	first time traversing this arc
+		 */
+		toindex = ++p->tos[0].link;
+		if (toindex >= p->tolimit)
+			/* halt further profiling */
+			goto overflow;
+
+		*frompcindex = toindex;
+		top = &p->tos[toindex];
+		top->selfpc = selfpc;
+		top->count = 1;
+		top->link = 0;
+		goto done;
+	}
+	top = &p->tos[toindex];
+	if (top->selfpc == selfpc) {
+		/*
+		 * arc at front of chain; usual case.
+		 */
+		top->count++;
+		goto done;
+	}
+	/*
+	 * have to go looking down chain for it.
+	 * top points to what we are looking at,
+	 * prevtop points to previous top.
+	 * we know it is not at the head of the chain.
+	 */
+	for (; /* goto done */; ) {
+		if (top->link == 0) {
+			/*
+			 * top is end of the chain and none of the chain
+			 * had top->selfpc == selfpc.
+			 * so we allocate a new tostruct
+			 * and link it to the head of the chain.
+			 */
+			toindex = ++p->tos[0].link;
+			if (toindex >= p->tolimit)
+				goto overflow;
+
+			top = &p->tos[toindex];
+			top->selfpc = selfpc;
+			top->count = 1;
+			top->link = *frompcindex;
+			*frompcindex = toindex;
+			goto done;
+		}
+		/*
+		 * otherwise, check the next arc on the chain.
+		 */
+		prevtop = top;
+		top = &p->tos[top->link];
+		if (top->selfpc == selfpc) {
+			/*
+			 * there it is.
+			 * increment its count
+			 * move it to the head of the chain.
+			 */
+			top->count++;
+			toindex = prevtop->link;
+			prevtop->link = top->link;
+			top->link = *frompcindex;
+			*frompcindex = toindex;
+			goto done;
+		}
+
+	}
+done:
+#ifdef KERNEL
+	MCOUNT_EXIT;
+#else
+	p->state = GMON_PROF_ON;
+#endif
+	return;
+overflow:
+	p->state = GMON_PROF_ERROR;
+#ifdef KERNEL
+	MCOUNT_EXIT;
+#endif
+	return;
+}
+
+/*
+ * Actual definition of mcount function.  Defined in <machine/profile.h>,
+ * which is included by <sys/gmon.h>.
+ */
+MCOUNT
+
+#ifdef GUPROF
+void
+mexitcount(selfpc)
+	fptrint_t selfpc;
+{
+	struct gmonparam *p;
+	fptrint_t selfpcdiff;
+
+	p = &_gmonparam;
+	selfpcdiff = selfpc - (fptrint_t)p->lowpc;
+	if (selfpcdiff < p->textsize) {
+		u_int delta;
+
+		/*
+		 * Solidify the count for the current function.
+		 */
+		delta = cputime() - p->mexitcount_overhead;
+		p->cputime_overhead_resid += p->cputime_overhead_frac;
+		p->mexitcount_overhead_resid += p->mexitcount_overhead_frac;
+		if ((int)delta < 0)
+			*p->mexitcount_count += delta + p->mexitcount_overhead
+						- p->cputime_overhead;
+		else if (delta != 0) {
+			if (p->cputime_overhead_resid >= CALIB_SCALE) {
+				p->cputime_overhead_resid -= CALIB_SCALE;
+				++*p->cputime_count;
+				--delta;
+			}
+			if (delta != 0) {
+				if (p->mexitcount_overhead_resid
+				    >= CALIB_SCALE) {
+					p->mexitcount_overhead_resid
+					    -= CALIB_SCALE;
+					++*p->mexitcount_count;
+					--delta;
+				}
+				KCOUNT(p, selfpcdiff) += delta;
+			}
+			*p->mexitcount_count += p->mexitcount_overhead_sub;
+		}
+		*p->cputime_count += p->cputime_overhead;
+	}
+}
+#endif /* GUPROF */
diff --git a/lib/libc/gmon/moncontrol.3 b/lib/libc/gmon/moncontrol.3
new file mode 100644
index 0000000..9b01f2b
--- /dev/null
+++ b/lib/libc/gmon/moncontrol.3
@@ -0,0 +1,101 @@
+.\" Copyright (c) 1980, 1991, 1992, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)moncontrol.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt MONCONTROL 3
+.Os BSD 4
+.Sh NAME
+.Nm moncontrol ,
+.Nm monstartup
+.Nd control execution profile
+.Sh SYNOPSIS
+.Fn moncontrol "int mode"
+.Fn monstartup "u_long *lowpc" "u_long *highpc"
+.Sh DESCRIPTION
+An executable program compiled using the
+.Fl pg
+option to
+.Xr cc 1
+automatically includes calls to collect statistics for the
+.Xr gprof 1
+call-graph execution profiler.
+In typical operation, profiling begins at program startup
+and ends when the program calls exit.
+When the program exits, the profiling data are written to the file
+.Em gmon.out ,
+then
+.Xr gprof 1
+can be used to examine the results.
+.Pp
+.Fn moncontrol
+selectively controls profiling within a program.
+When the program starts, profiling begins.
+To stop the collection of histogram ticks and call counts use
+.Fn moncontrol 0 ;
+to resume the collection of histogram ticks and call counts use
+.Fn moncontrol 1 .
+This feature allows the cost of particular operations to be measured.
+Note that an output file will be produced on program exit
+regardless of the state of 
+.Fn moncontrol .
+.Pp
+Programs that are not loaded with
+.Fl pg
+may selectively collect profiling statistics by calling
+.Fn monstartup
+with the range of addresses to be profiled.
+.Fa lowpc
+and
+.Fa highpc
+specify the address range that is to be sampled;
+the lowest address sampled is that of
+.Fa lowpc
+and the highest is just below
+.Fa highpc .
+Only functions in that range that have been compiled with the 
+.Fl pg
+option to
+.Xr cc 1
+will appear in the call graph part of the output;
+however, all functions in that address range will
+have their execution time measured.
+Profiling begins on return from
+.Fn monstartup .
+.Sh FILES
+.Bl -tag -width Pa -compact
+.It Pa gmon.out	execution data file
+.El
+.Sh SEE ALSO
+.Xr cc 1 ,
+.Xr gprof 1 ,
+.Xr profil 2
diff --git a/lib/libc/i386/DEFS.h b/lib/libc/i386/DEFS.h
new file mode 100644
index 0000000..6df18a1
--- /dev/null
+++ b/lib/libc/i386/DEFS.h
@@ -0,0 +1,83 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	from: @(#)DEFS.h	5.1 (Berkeley) 4/23/90
+ *
+ *	$Id: DEFS.h,v 1.4 1994/05/03 16:29:13 jkh Exp $
+ */
+
+/* XXX should use align 4,0x90 for -m486. */
+#define _START_ENTRY	.align 2,0x90;
+#if 0
+/* Data is not used, except perhaps by non-g prof, which we don't support. */
+#define _MID_ENTRY	.data; .align 2; 8:; .long 0;		\
+			.text; lea 8b,%eax;
+#else
+#define _MID_ENTRY
+#endif
+
+#ifdef PROF
+
+#define ALTENTRY(x)	_START_ENTRY	\
+			.globl _/**/x; .type _/**/x,@function; _/**/x:; \
+			_MID_ENTRY	\
+			call mcount; jmp 9f
+
+#define ENTRY(x)	_START_ENTRY \
+			.globl _/**/x; .type _/**/x,@function; _/**/x:; \
+			_MID_ENTRY	\
+			call mcount; 9:
+
+
+#define	ALTASENTRY(x)	_START_ENTRY	\
+			.globl x; .type x,@function; x:;	\
+			_MID_ENTRY	\
+			call mcount; jmp 9f
+
+#define	ASENTRY(x)	_START_ENTRY	\
+			.globl x; .type x,@function; x:;	\
+			_MID_ENTRY	\
+			call mcount; 9:
+
+#else	/* !PROF */
+
+#define	ENTRY(x)	_START_ENTRY .globl _/**/x; .type _/**/x,@function; \
+			_/**/x:
+#define	ALTENTRY(x)	ENTRY(x)
+
+#define	ASENTRY(x)	_START_ENTRY .globl x; .type x,@function; x:
+#define	ALTASENTRY(x)	ASENTRY(x)
+
+#endif
diff --git a/lib/libc/i386/SYS.h b/lib/libc/i386/SYS.h
new file mode 100644
index 0000000..53837ab
--- /dev/null
+++ b/lib/libc/i386/SYS.h
@@ -0,0 +1,73 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	from: @(#)SYS.h	5.5 (Berkeley) 5/7/91
+ *
+ *	$Id: SYS.h,v 1.3 1993/11/04 00:01:17 paul Exp $
+ */
+
+#include <sys/syscall.h>
+#include "DEFS.h"
+
+#ifdef PIC
+#define PIC_PROLOGUE    \
+        pushl   %ebx;   \
+        call    1f;     \
+1:                      \
+        popl    %ebx;   \
+        addl    $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
+#define PIC_EPILOGUE    \
+        popl    %ebx
+#define PIC_PLT(x)      x@PLT
+#define PIC_GOT(x)      x@GOT(%ebx)
+#define PIC_GOTOFF(x)   x@GOTOFF(%ebx)
+#else
+#define PIC_PROLOGUE
+#define PIC_EPILOGUE
+#define PIC_PLT(x)      x
+#define PIC_GOT(x)      x
+#define PIC_GOTOFF(x)   x
+#endif
+
+#define	SYSCALL(x)	2: jmp cerror; ENTRY(x); lea SYS_/**/x,%eax; LCALL(7,0); jb 2b
+#define	RSYSCALL(x)	SYSCALL(x); ret
+#define	PSEUDO(x,y)	ENTRY(x); lea SYS_/**/y, %eax; ; LCALL(7,0); ret
+#define	CALL(x,y)	call _/**/y; addl $4*x,%esp
+/* gas fucks up offset -- although we don't currently need it, do for BCS */
+#define	LCALL(x,y)	.byte 0x9a ; .long y; .word x
+
+#define	ASMSTR		.asciz
+
+	.globl	cerror
diff --git a/lib/libc/i386/gen/Makefile.inc b/lib/libc/i386/gen/Makefile.inc
new file mode 100644
index 0000000..387aebf
--- /dev/null
+++ b/lib/libc/i386/gen/Makefile.inc
@@ -0,0 +1,5 @@
+#	@(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+#	$Id: Makefile.inc,v 1.5 1995/01/23 01:26:39 davidg Exp $
+
+SRCS+=	isinf.c infinity.c
+SRCS+=	_setjmp.S alloca.S fabs.S ldexp.c modf.S setjmp.S sigsetjmp.S
diff --git a/lib/libc/i386/gen/_setjmp.S b/lib/libc/i386/gen/_setjmp.S
new file mode 100644
index 0000000..abd2684
--- /dev/null
+++ b/lib/libc/i386/gen/_setjmp.S
@@ -0,0 +1,84 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+/*
+ * C library -- _setjmp, _longjmp
+ *
+ *	_longjmp(a,v)
+ * will generate a "return(v)" from the last call to
+ *	_setjmp(a)
+ * by restoring registers from the environment 'a'.
+ * The previous signal state is NOT restored.
+ */
+
+#include "DEFS.h"
+
+ENTRY(_setjmp)
+	movl	4(%esp),%eax
+	movl	0(%esp),%edx
+	movl	%edx, 0(%eax)		/* rta */
+	movl	%ebx, 4(%eax)
+	movl	%esp, 8(%eax)
+	movl	%ebp,12(%eax)
+	movl	%esi,16(%eax)
+	movl	%edi,20(%eax)
+	fnstcw	28(%eax)
+	xorl	%eax,%eax
+	ret
+
+ENTRY(_longjmp)
+	movl	4(%esp),%edx
+	movl	8(%esp),%eax
+	movl	0(%edx),%ecx
+	movl	4(%edx),%ebx
+	movl	8(%edx),%esp
+	movl	12(%edx),%ebp
+	movl	16(%edx),%esi
+	movl	20(%edx),%edi
+	fninit
+	fldcw	28(%edx)
+	testl	%eax,%eax
+	jnz	1f
+	incl	%eax
+1:	movl	%ecx,0(%esp)
+	ret
diff --git a/lib/libc/i386/gen/alloca.S b/lib/libc/i386/gen/alloca.S
new file mode 100644
index 0000000..f76b37b
--- /dev/null
+++ b/lib/libc/i386/gen/alloca.S
@@ -0,0 +1,60 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+/* like alloc, but automatic automatic free in return */
+
+#include "DEFS.h"
+
+ENTRY(alloca)
+	popl	%edx		/*  pop return addr */
+	popl	%eax		/*  pop amount to allocate */
+	movl	%esp,%ecx
+	addl	$3,%eax		/*  round up to next word */
+	andl	$0xfffffffc,%eax
+	subl	%eax,%esp
+	movl	%esp,%eax	/* base of newly allocated space */
+	pushl	8(%ecx)		/* copy possible saved registers */
+	pushl	4(%ecx)
+	pushl	0(%ecx)
+	pushl	%eax		/* dummy to pop at callsite */
+	jmp	%edx		/* "return" */
diff --git a/lib/libc/i386/gen/fabs.S b/lib/libc/i386/gen/fabs.S
new file mode 100644
index 0000000..5ae5370
--- /dev/null
+++ b/lib/libc/i386/gen/fabs.S
@@ -0,0 +1,49 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+ENTRY(fabs)
+	fldl	4(%esp)
+	fabs
+	ret
diff --git a/lib/libc/i386/gen/frexp.c b/lib/libc/i386/gen/frexp.c
new file mode 100644
index 0000000..aba4802
--- /dev/null
+++ b/lib/libc/i386/gen/frexp.c
@@ -0,0 +1,67 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+static const char rcsid[] = "$Id$";
+#endif /* LIBC_RCS and not lint */
+
+#include <sys/types.h>
+#include <math.h>
+
+double
+frexp(value, eptr)
+	double value;
+	int *eptr;
+{
+	union {
+                double v;
+                struct {
+			u_int u_mant2 : 32;
+			u_int u_mant1 : 20;
+			u_int   u_exp : 11;
+                        u_int  u_sign :  1;
+                } s;
+        } u;
+
+	if (value) {
+		u.v = value;
+		*eptr = u.s.u_exp - 1022;
+		u.s.u_exp = 1022;
+		return(u.v);
+	} else {
+		*eptr = 0;
+		return((double)0);
+	}
+}
diff --git a/lib/libc/i386/gen/infinity.c b/lib/libc/i386/gen/infinity.c
new file mode 100644
index 0000000..e46f676
--- /dev/null
+++ b/lib/libc/i386/gen/infinity.c
@@ -0,0 +1,9 @@
+/*
+ * infinity.c
+ *	$Id$
+ */
+
+#include <math.h>
+
+/* bytes for +Infinity on a 387 */
+char __infinity[] = { 0, 0, 0, 0, 0, 0, 0xf0, 0x7f };
diff --git a/lib/libc/i386/gen/isinf.c b/lib/libc/i386/gen/isinf.c
new file mode 100644
index 0000000..c328449
--- /dev/null
+++ b/lib/libc/i386/gen/isinf.c
@@ -0,0 +1,66 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+static const char rcsid[] = "$Id$";
+#endif /* LIBC_RCS and not lint */
+
+#include <sys/types.h>
+
+isnan(d)
+	double d;
+{
+	register struct IEEEdp {
+		u_int manl : 32;
+		u_int manh : 20;
+		u_int  exp : 11;
+		u_int sign :  1;
+	} *p = (struct IEEEdp *)&d;
+
+	return(p->exp == 2047 && (p->manh || p->manl));
+}
+
+isinf(d)
+	double d;
+{
+	register struct IEEEdp {
+		u_int manl : 32;
+		u_int manh : 20;
+		u_int  exp : 11;
+		u_int sign :  1;
+	} *p = (struct IEEEdp *)&d;
+
+	return(p->exp == 2047 && !p->manh && !p->manl);
+}
diff --git a/lib/libc/i386/gen/ldexp.c b/lib/libc/i386/gen/ldexp.c
new file mode 100644
index 0000000..8b63f52
--- /dev/null
+++ b/lib/libc/i386/gen/ldexp.c
@@ -0,0 +1,74 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Sean Eric Fagan.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+static const char rcsid[] = "$Id$";
+#endif /* LIBC_RCS and not lint */
+
+/*
+ * ldexp(value, exp): return value * (2 ** exp).
+ *
+ * Written by Sean Eric Fagan (sef@kithrup.COM)
+ * Sun Mar 11 20:27:09 PST 1990
+ */
+
+/*
+ * We do the conversion in C to let gcc optimize it away, if possible.
+ * The "fxch ; fstp" stuff is because value is still on the stack
+ * (stupid 8087!).
+ */
+double
+ldexp (double value, int exp)
+{
+	double temp, texp, temp2;
+	texp = exp;
+#ifdef __GNUC__
+#if    __GNUC__ >= 2
+	asm ("fscale "
+		: "=u" (temp2), "=t" (temp)
+		: "0" (texp), "1" (value));
+#else
+	asm ("fscale ; fxch %%st(1) ; fstp%L1 %1 "
+		: "=f" (temp), "=0" (temp2)
+		: "0" (texp), "f" (value));
+#endif
+#else
+error unknown asm
+#endif
+	return (temp);
+}
diff --git a/lib/libc/i386/gen/modf.S b/lib/libc/i386/gen/modf.S
new file mode 100644
index 0000000..35b993a
--- /dev/null
+++ b/lib/libc/i386/gen/modf.S
@@ -0,0 +1,79 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Sean Eric Fagan.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+/*
+ * modf(value, iptr): return fractional part of value, and stores the
+ * integral part into iptr (a pointer to double).
+ *
+ * Written by Sean Eric Fagan (sef@kithrup.COM)
+ * Sun Mar 11 20:27:30 PST 1990
+ */
+
+/* With CHOP mode on, frndint behaves as TRUNC does.  Useful. */
+.text
+.globl _modf
+.type _modf,@function
+_modf:
+	pushl %ebp
+	movl %esp,%ebp
+	subl $16,%esp
+	fnstcw -12(%ebp)
+	movw -12(%ebp),%dx
+	orw $3072,%dx
+	movw %dx,-16(%ebp)
+	fldcw -16(%ebp)
+	fldl 8(%ebp)
+	frndint
+	fstpl -8(%ebp)
+	fldcw -12(%ebp)
+	movl 16(%ebp),%eax
+	movl -8(%ebp),%edx
+	movl -4(%ebp),%ecx
+	movl %edx,(%eax)
+	movl %ecx,4(%eax)
+	fldl 8(%ebp)
+	fsubl -8(%ebp)
+	jmp L1
+L1:
+	leave
+	ret
diff --git a/lib/libc/i386/gen/setjmp.S b/lib/libc/i386/gen/setjmp.S
new file mode 100644
index 0000000..fa52b83
--- /dev/null
+++ b/lib/libc/i386/gen/setjmp.S
@@ -0,0 +1,93 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+/*
+ * C library -- _setjmp, _longjmp
+ *
+ *	longjmp(a,v)
+ * will generate a "return(v)" from the last call to
+ *	setjmp(a)
+ * by restoring registers from the environment 'a'.
+ * The previous signal state is restored.
+ */
+
+#include "DEFS.h"
+#include "SYS.h"
+
+ENTRY(setjmp)
+	pushl	$0
+	call	PIC_PLT(_sigblock)
+	popl	%edx
+	movl	4(%esp),%ecx 
+	movl	0(%esp),%edx
+	movl	%edx, 0(%ecx)
+	movl	%ebx, 4(%ecx)
+	movl	%esp, 8(%ecx)
+	movl	%ebp,12(%ecx)
+	movl	%esi,16(%ecx)
+	movl	%edi,20(%ecx)
+	movl	%eax,24(%ecx)
+	fnstcw	28(%ecx)
+	xorl	%eax,%eax
+	ret
+
+ENTRY(longjmp)
+	movl	4(%esp),%edx
+	pushl	24(%edx)
+	call	PIC_PLT(_sigsetmask)	/* XXX this is not reentrant */
+	popl	%eax
+	movl	4(%esp),%edx
+	movl	8(%esp),%eax
+	movl	0(%edx),%ecx
+	movl	4(%edx),%ebx
+	movl	8(%edx),%esp
+	movl	12(%edx),%ebp
+	movl	16(%edx),%esi
+	movl	20(%edx),%edi
+	fninit
+	fldcw	28(%edx)
+	testl	%eax,%eax
+	jnz	1f
+	incl	%eax
+1:	movl	%ecx,0(%esp)
+	ret
diff --git a/lib/libc/i386/gen/sigsetjmp.S b/lib/libc/i386/gen/sigsetjmp.S
new file mode 100644
index 0000000..4f592a3
--- /dev/null
+++ b/lib/libc/i386/gen/sigsetjmp.S
@@ -0,0 +1,105 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: sigsetjmp.S,v 1.3 1994/12/27 13:34:04 bde Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id: sigsetjmp.S,v 1.3 1994/12/27 13:34:04 bde Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+#include "SYS.h"
+
+/*-
+ * TODO:
+ *	Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp,
+ *	remove the other *jmp functions and define everything in terms
+ *	of the renamed functions.  This requires compiler support for
+ *	the renamed functions (introduced in gcc-2.5.3; previous versions
+ *	only supported *jmp with 0 or 1 leading underscores).
+ *
+ *	Use sigprocmask() instead of sigblock() and sigsetmask(), and
+ *	check for and handle errors.
+ *
+ *	Restore _all_ the registers and the signal mask atomically.  Can
+ *	use sigreturn() if sigreturn() works.
+ */
+
+ENTRY(sigsetjmp)
+	movl	8(%esp),%eax
+	movl	4(%esp),%ecx 
+	movl	%eax,32(%ecx)
+	testl	%eax,%eax
+	jz	1f
+	pushl	$0
+	call	PIC_PLT(_sigblock)
+	addl	$4,%esp
+	movl	4(%esp),%ecx 
+	movl	%eax,24(%ecx)
+1:	movl	0(%esp),%edx
+	movl	%edx, 0(%ecx)
+	movl	%ebx, 4(%ecx)
+	movl	%esp, 8(%ecx)
+	movl	%ebp,12(%ecx)
+	movl	%esi,16(%ecx)
+	movl	%edi,20(%ecx)
+	fnstcw	28(%ecx)
+	xorl	%eax,%eax
+	ret
+
+ENTRY(siglongjmp)
+	movl	4(%esp),%edx
+	cmpl	$0,32(%edx)
+	jz	1f
+	pushl	24(%edx)
+	call	PIC_PLT(_sigsetmask)
+	addl	$4,%esp
+1:	movl	4(%esp),%edx
+	movl	8(%esp),%eax
+	movl	0(%edx),%ecx
+	movl	4(%edx),%ebx
+	movl	8(%edx),%esp
+	movl	12(%edx),%ebp
+	movl	16(%edx),%esi
+	movl	20(%edx),%edi
+	fninit
+	fldcw	28(%edx)
+	testl	%eax,%eax
+	jnz	2f
+	incl	%eax
+2:	movl	%ecx,0(%esp)
+	ret
diff --git a/lib/libc/i386/net/Makefile.inc b/lib/libc/i386/net/Makefile.inc
new file mode 100644
index 0000000..dff7fd1
--- /dev/null
+++ b/lib/libc/i386/net/Makefile.inc
@@ -0,0 +1,4 @@
+#	@(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+#	$Id$
+
+SRCS+=	htonl.S htons.S ntohl.S ntohs.S
diff --git a/lib/libc/i386/net/htonl.S b/lib/libc/i386/net/htonl.S
new file mode 100644
index 0000000..095c40a
--- /dev/null
+++ b/lib/libc/i386/net/htonl.S
@@ -0,0 +1,53 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+/* netorder = htonl(hostorder) */
+
+#include "DEFS.h"
+
+ENTRY(htonl)
+	movl	4(%esp),%eax
+	xchgb	%al,%ah
+	roll	$16,%eax
+	xchgb	%al,%ah
+	ret
diff --git a/lib/libc/i386/net/htons.S b/lib/libc/i386/net/htons.S
new file mode 100644
index 0000000..238dfc2
--- /dev/null
+++ b/lib/libc/i386/net/htons.S
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+/* netorder = htons(hostorder) */
+
+#include "DEFS.h"
+
+ENTRY(htons)
+	movzwl	4(%esp),%eax
+	xchgb	%al,%ah
+	ret
diff --git a/lib/libc/i386/net/ntohl.S b/lib/libc/i386/net/ntohl.S
new file mode 100644
index 0000000..5af5008
--- /dev/null
+++ b/lib/libc/i386/net/ntohl.S
@@ -0,0 +1,53 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+/* hostorder = ntohl(netorder) */
+
+#include "DEFS.h"
+
+ENTRY(ntohl)
+	movl	4(%esp),%eax
+	xchgb	%al,%ah
+	roll	$16,%eax
+	xchgb	%al,%ah
+	ret
diff --git a/lib/libc/i386/net/ntohs.S b/lib/libc/i386/net/ntohs.S
new file mode 100644
index 0000000..4bed4a2
--- /dev/null
+++ b/lib/libc/i386/net/ntohs.S
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+/* hostorder = ntohs(netorder) */
+
+#include "DEFS.h"
+
+ENTRY(ntohs)
+	movzwl	4(%esp),%eax
+	xchgb	%al,%ah
+	ret
diff --git a/lib/libc/i386/stdlib/Makefile.inc b/lib/libc/i386/stdlib/Makefile.inc
new file mode 100644
index 0000000..65ce348
--- /dev/null
+++ b/lib/libc/i386/stdlib/Makefile.inc
@@ -0,0 +1,4 @@
+#	@(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+#	$Id$
+
+SRCS+=	abs.S
diff --git a/lib/libc/i386/stdlib/abs.S b/lib/libc/i386/stdlib/abs.S
new file mode 100644
index 0000000..4915d16
--- /dev/null
+++ b/lib/libc/i386/stdlib/abs.S
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+ENTRY(abs)
+	movl	4(%esp),%eax
+	testl	%eax,%eax
+	jns	1f
+	negl	%eax
+1:	ret
diff --git a/lib/libc/i386/stdlib/div.S b/lib/libc/i386/stdlib/div.S
new file mode 100644
index 0000000..b4f89d2
--- /dev/null
+++ b/lib/libc/i386/stdlib/div.S
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 1993 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: div.S,v 1.1 1993/12/04 21:46:15 ats Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: div.S,v 1.1 1993/12/04 21:46:15 ats Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+ENTRY(div)
+        movl    4(%esp),%eax
+        movl    8(%esp),%ecx
+        cdq
+        idiv    %ecx
+        movl    %eax,4(%esp)
+        movl    %edx,8(%esp)
+        ret
diff --git a/lib/libc/i386/stdlib/labs.S b/lib/libc/i386/stdlib/labs.S
new file mode 100644
index 0000000..5c5afe1
--- /dev/null
+++ b/lib/libc/i386/stdlib/labs.S
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+ENTRY(labs)
+	movl	4(%esp),%eax
+	testl	%eax,%eax
+	jns	1f
+	negl	%eax
+1:	ret
diff --git a/lib/libc/i386/stdlib/ldiv.S b/lib/libc/i386/stdlib/ldiv.S
new file mode 100644
index 0000000..de7bb94
--- /dev/null
+++ b/lib/libc/i386/stdlib/ldiv.S
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 1993 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: ldiv.S,v 1.1 1993/12/04 21:46:17 ats Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: ldiv.S,v 1.1 1993/12/04 21:46:17 ats Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+ENTRY(ldiv)
+        movl    4(%esp),%eax
+        movl    8(%esp),%ecx
+        cdq
+        idiv    %ecx
+        movl    %eax,4(%esp)
+        movl    %edx,8(%esp)
+        ret
diff --git a/lib/libc/i386/string/Makefile.inc b/lib/libc/i386/string/Makefile.inc
new file mode 100644
index 0000000..be5827f
--- /dev/null
+++ b/lib/libc/i386/string/Makefile.inc
@@ -0,0 +1,8 @@
+#	@(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+#	$Id$
+
+SRCS+=	bcmp.S bcopy.S bzero.S ffs.S index.S memchr.S memcmp.S \
+	memmove.S memset.S \
+	rindex.S strcat.S strchr.S strcmp.S strcpy.S strcspn.c \
+	strlen.S strncat.c strncmp.S strncpy.c strpbrk.c strsep.c \
+	strspn.c strrchr.S strstr.c swab.S
diff --git a/lib/libc/i386/string/bcmp.S b/lib/libc/i386/string/bcmp.S
new file mode 100644
index 0000000..c15975a
--- /dev/null
+++ b/lib/libc/i386/string/bcmp.S
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 1993 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: bcmp.S,v 1.1 1994/08/05 01:18:23 wollman Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: bcmp.S,v 1.1 1994/08/05 01:18:23 wollman Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+/*
+ * bcmp (void *b1, void *b2, size_t len)
+ *
+ * Written by:
+ *	J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ */
+
+ENTRY(bcmp)
+	pushl	%edi
+	pushl	%esi
+	movl	12(%esp),%edi
+	movl	16(%esp),%esi
+	xorl	%eax,%eax		/* clear return value */
+	cld				/* set compare direction forward */
+
+	movl	20(%esp),%ecx		/* compare by words */
+	shrl	$2,%ecx
+	repe
+	cmpsl
+	jne	L1
+
+	movl	20(%esp),%ecx		/* compare remainder by bytes */
+	andl	$3,%ecx
+	repe
+	cmpsb
+	je	L2
+
+L1:	incl	%eax
+L2:	popl	%esi
+	popl	%edi
+	ret
diff --git a/lib/libc/i386/string/bcopy.S b/lib/libc/i386/string/bcopy.S
new file mode 100644
index 0000000..6d99938
--- /dev/null
+++ b/lib/libc/i386/string/bcopy.S
@@ -0,0 +1,89 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: bcopy.S,v 1.2 1995/01/23 01:28:49 davidg Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id: bcopy.S,v 1.2 1995/01/23 01:28:49 davidg Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+	/*
+	 * (ov)bcopy (src,dst,cnt)
+	 *  ws@tools.de     (Wolfgang Solfrank, TooLs GmbH) +49-228-985800
+	 */
+
+ENTRY(bcopy)
+	pushl	%esi
+	pushl	%edi
+	movl	12(%esp),%esi
+	movl	16(%esp),%edi
+	movl	20(%esp),%ecx
+	movl	%edi,%eax
+	subl	%esi,%eax
+	cmpl	%ecx,%eax	/* overlapping? */
+	jb	1f
+	cld			/* nope, copy forwards. */
+	shrl	$2,%ecx		/* copy by words */
+	rep
+	movsl
+	movl	20(%esp),%ecx
+	andl	$3,%ecx		/* any bytes left? */
+	rep
+	movsb
+	popl	%edi
+	popl	%esi
+	ret
+1:
+	addl	%ecx,%edi	/* copy backwards. */
+	addl	%ecx,%esi
+	decl	%edi
+	decl	%esi
+	andl	$3,%ecx		/* any fractional bytes? */
+	std
+	rep
+	movsb
+	movl	20(%esp),%ecx	/* copy remainder by words */
+	shrl	$2,%ecx
+	subl	$3,%esi
+	subl	$3,%edi
+	rep
+	movsl
+	popl	%edi
+	popl	%esi
+	cld
+	ret
diff --git a/lib/libc/i386/string/bzero.S b/lib/libc/i386/string/bzero.S
new file mode 100644
index 0000000..74a1d03
--- /dev/null
+++ b/lib/libc/i386/string/bzero.S
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 1993 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: bzero.S,v 1.1 1994/08/05 01:18:25 wollman Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: bzero.S,v 1.1 1994/08/05 01:18:25 wollman Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+/*
+ * bzero (void *b, size_t len)
+ *	write len zero bytes to the string b.
+ *
+ * Written by:
+ *	J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ */
+
+ENTRY(bzero)
+	pushl	%edi
+	pushl	%ebx
+	movl	12(%esp),%edi
+	movl	16(%esp),%ecx
+
+	cld				/* set fill direction forward */
+	xorl	%eax,%eax		/* set fill data to 0 */
+
+	/*
+	 * if the string is too short, it's really not worth the overhead
+	 * of aligning to word boundries, etc.  So we jump to a plain 
+	 * unaligned set.
+	 */
+	cmpl	$0x0f,%ecx
+	jle	L1
+
+	movl	%edi,%edx		/* compute misalignment */
+	negl	%edx
+	andl	$3,%edx
+	movl	%ecx,%ebx
+	subl	%edx,%ebx
+
+	movl	%edx,%ecx		/* zero until word aligned */
+	rep
+	stosb
+
+	movl	%ebx,%ecx		/* zero by words */
+	shrl	$2,%ecx
+	rep
+	stosl
+
+	movl	%ebx,%ecx
+	andl	$3,%ecx			/* zero remainder by bytes */
+L1:	rep
+	stosb
+
+	popl	%ebx
+	popl	%edi
+	ret
diff --git a/lib/libc/i386/string/ffs.S b/lib/libc/i386/string/ffs.S
new file mode 100644
index 0000000..69ef90e
--- /dev/null
+++ b/lib/libc/i386/string/ffs.S
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 1993 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: ffs.S,v 1.1 1994/08/05 01:18:26 wollman Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: ffs.S,v 1.1 1994/08/05 01:18:26 wollman Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+/*
+ * ffs(value)
+ *	finds the first bit set in value and returns the index of 
+ *	that bit.  Bits are numbered starting from 1, starting at the
+ *	rightmost bit.  A return value of 0 means that the argument
+ *	was zero.
+ *
+ * Written by:
+ *	J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ */
+
+ENTRY(ffs)
+	bsfl	4(%esp),%eax
+	jz	L1	 		/* ZF is set if all bits are 0 */
+	incl	%eax			/* bits numbered from 1, not 0 */
+	ret
+
+	.align 2
+L1:	xorl	%eax,%eax		/* clear result */
+	ret
diff --git a/lib/libc/i386/string/index.S b/lib/libc/i386/string/index.S
new file mode 100644
index 0000000..f7b0d8d
--- /dev/null
+++ b/lib/libc/i386/string/index.S
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 1993 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: index.S,v 1.1 1994/08/05 01:18:27 wollman Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: index.S,v 1.1 1994/08/05 01:18:27 wollman Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+/*
+ * index(s, c)
+ *	return a pointer to the first occurance of the character c in
+ *	string s, or NULL if c does not occur in the string.
+ *
+ * %edx - pointer iterating through string
+ * %eax - pointer to first occurance of 'c'
+ * %cl  - character we're comparing against
+ * %bl  - character at %edx
+ *
+ * Written by:
+ *	J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ */
+
+ENTRY(index)
+	pushl	%ebx
+	movl	8(%esp),%eax
+	movb	12(%esp),%cl
+	.align 2,0x90
+L1:
+	movb	(%eax),%bl
+	cmpb	%bl,%cl			/* found char??? */
+	je 	L2
+	incl	%eax
+	testb	%bl,%bl			/* null terminator??? */
+	jne	L1
+	xorl	%eax,%eax
+L2:
+	popl	%ebx
+	ret
diff --git a/lib/libc/i386/string/memchr.S b/lib/libc/i386/string/memchr.S
new file mode 100644
index 0000000..dd989d4
--- /dev/null
+++ b/lib/libc/i386/string/memchr.S
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 1993 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: memchr.S,v 1.4 1994/11/25 08:58:53 davidg Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: memchr.S,v 1.4 1994/11/25 08:58:53 davidg Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+/*
+ * memchr (b, c, len)
+ *	locates the first occurance of c in string b.
+ *
+ * Written by:
+ *	J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ */
+
+ENTRY(memchr)
+	pushl	%edi
+	movl	8(%esp),%edi		/* string address */
+	movl	12(%esp),%eax		/* set character to search for */
+	movl	16(%esp),%ecx		/* set length of search */
+	testl	%esp,%esp		/* clear Z flag, for len == 0 */
+	cld				/* set search forward */
+	repne				/* search! */
+	scasb
+	jnz	L1			/* scan failed, return null */
+	leal	-1(%edi),%eax		/* adjust result of scan */
+	popl	%edi
+	ret
+	.align 2,0x90
+L1:	xorl	%eax,%eax
+	popl	%edi
+	ret
diff --git a/lib/libc/i386/string/memcmp.S b/lib/libc/i386/string/memcmp.S
new file mode 100644
index 0000000..f43329d
--- /dev/null
+++ b/lib/libc/i386/string/memcmp.S
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 1993 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: memcmp.S,v 1.1 1994/08/05 01:18:29 wollman Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: memcmp.S,v 1.1 1994/08/05 01:18:29 wollman Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+/*
+ * memcmp (void *b1, void *b2, size_t len)
+ *
+ * Written by:
+ *	J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ */
+
+ENTRY(memcmp)
+	pushl	%edi
+	pushl	%esi
+	movl	12(%esp),%edi
+	movl	16(%esp),%esi
+	cld				/* set compare direction forward */
+
+	movl	20(%esp),%ecx		/* compare by words */
+	shrl	$2,%ecx
+	repe
+	cmpsl
+	jne	L5			/* do we match so far? */
+
+	movl	20(%esp),%ecx		/* compare remainder by bytes */
+	andl	$3,%ecx
+	repe
+	cmpsb
+	jne	L6			/* do we match? */
+
+	xorl	%eax,%eax		/* we match, return zero	*/
+	popl	%esi
+	popl	%edi
+	ret
+
+L5:	movl	$4,%ecx			/* We know that one of the next	*/
+	subl	%ecx,%edi		/* four pairs of bytes do not	*/
+	subl	%ecx,%esi		/* match.			*/
+	repe
+	cmpsb
+L6:	movzbl  -1(%edi),%eax		/* Perform unsigned comparison	*/
+        movzbl  -1(%esi),%edx
+        subl    %edx,%eax
+	popl	%esi
+	popl	%edi
+	ret
diff --git a/lib/libc/i386/string/memmove.S b/lib/libc/i386/string/memmove.S
new file mode 100644
index 0000000..497af4f
--- /dev/null
+++ b/lib/libc/i386/string/memmove.S
@@ -0,0 +1,92 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: memmove.S,v 1.2 1995/01/23 01:29:02 davidg Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: memmove.S,v 1.2 1995/01/23 01:29:02 davidg Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+	/*
+	 * (ov)bcopy (src,dst,cnt)
+	 *  ws@tools.de     (Wolfgang Solfrank, TooLs GmbH) +49-228-985800
+	 */
+
+ALTENTRY(memcpy)
+ENTRY(memmove)
+	pushl	%esi
+	pushl	%edi
+	movl	12(%esp),%edi
+	movl	16(%esp),%esi
+	movl	20(%esp),%ecx
+	movl	%edi,%eax
+	subl	%esi,%eax
+	cmpl	%ecx,%eax
+	jb	1f
+	cld			/* nope, copy forwards. */
+	shrl	$2,%ecx		/* copy by words */
+	rep
+	movsl
+	movl	20(%esp),%ecx
+	andl	$3,%ecx		/* any bytes left? */
+	rep
+	movsb
+	movl	12(%esp),%eax
+	popl	%edi
+	popl	%esi
+	ret
+1:
+	addl	%ecx,%edi	/* copy backwards. */
+	addl	%ecx,%esi
+	decl	%edi
+	decl	%esi
+	andl	$3,%ecx		/* any fractional bytes? */
+	std
+	rep
+	movsb
+	movl	20(%esp),%ecx	/* copy remainder by words */
+	shrl	$2,%ecx
+	subl	$3,%esi
+	subl	$3,%edi
+	rep
+	movsl
+	movl	12(%esp),%eax
+	popl	%edi
+	popl	%esi
+	cld
+	ret
diff --git a/lib/libc/i386/string/memset.S b/lib/libc/i386/string/memset.S
new file mode 100644
index 0000000..412bcbb
--- /dev/null
+++ b/lib/libc/i386/string/memset.S
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 1993 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: memset.S,v 1.1 1994/08/05 01:18:30 wollman Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: memset.S,v 1.1 1994/08/05 01:18:30 wollman Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+/*
+ * memset(void *b, int c, size_t len)
+ *	write len bytes of value c (converted to an unsigned char) to 
+ *	the string b.
+ *
+ * Written by:
+ *	J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ */
+
+ENTRY(memset)
+	pushl	%edi
+	pushl	%ebx
+	movl	12(%esp),%edi
+	movzbl	16(%esp),%eax		/* unsigned char, zero extend */
+	movl	20(%esp),%ecx
+	pushl	%edi			/* push address of buffer */
+
+	cld				/* set fill direction forward */
+
+	/*
+	 * if the string is too short, it's really not worth the overhead
+	 * of aligning to word boundries, etc.  So we jump to a plain
+	 * unaligned set.
+	 */
+	cmpl	$0x0f,%ecx
+	jle	L1
+
+	movb	%al,%ah			/* copy char to all bytes in word */
+	movl	%eax,%edx
+	sall	$16,%eax
+	orl	%edx,%eax
+
+	movl	%edi,%edx		/* compute misalignment */
+	negl	%edx
+	andl	$3,%edx
+	movl	%ecx,%ebx
+	subl	%edx,%ebx
+
+	movl	%edx,%ecx		/* set until word aligned */
+	rep
+	stosb
+
+	movl	%ebx,%ecx
+	shrl	$2,%ecx			/* set by words */
+	rep
+	stosl
+
+	movl	%ebx,%ecx		/* set remainder by bytes */
+	andl	$3,%ecx
+L1:	rep
+	stosb
+
+	popl	%eax			/* pop address of buffer */
+	popl	%ebx
+	popl	%edi
+	ret
diff --git a/lib/libc/i386/string/rindex.S b/lib/libc/i386/string/rindex.S
new file mode 100644
index 0000000..53af042
--- /dev/null
+++ b/lib/libc/i386/string/rindex.S
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 1993 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: rindex.S,v 1.1 1994/08/05 01:18:31 wollman Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: rindex.S,v 1.1 1994/08/05 01:18:31 wollman Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+/*
+ * rindex(s, c)
+ *	return a pointer to the last occurance of the character c in
+ *	string s, or NULL if c does not occur in the string.
+ *
+ * %edx - pointer iterating through string
+ * %eax - pointer to last occurance of 'c'
+ * %cl  - character we're comparing against
+ * %bl  - character at %edx
+ *
+ * Written by:
+ *	J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ */
+ 
+ENTRY(rindex)
+	pushl	%ebx
+	movl	8(%esp),%edx
+	movb	12(%esp),%cl
+	xorl	%eax,%eax		/* init pointer to null */
+	.align 2,0x90
+L1:
+	movb	(%edx),%bl
+	cmpb	%bl,%cl
+	jne	L2
+	movl	%edx,%eax
+L2:	
+	incl	%edx
+	testb	%bl,%bl			/* null terminator??? */
+	jne	L1
+	popl	%ebx
+	ret
diff --git a/lib/libc/i386/string/strcat.S b/lib/libc/i386/string/strcat.S
new file mode 100644
index 0000000..9d5e119
--- /dev/null
+++ b/lib/libc/i386/string/strcat.S
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 1993 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: strcat.S,v 1.1 1994/08/05 01:18:32 wollman Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: strcat.S,v 1.1 1994/08/05 01:18:32 wollman Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+/*
+ * strcat(s, append)
+ *	append a copy of the null-terminated string "append" to the end
+ *	of the null-terminated string s, then add a terminating `\0'.
+ *
+ * Written by:
+ *	J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ */
+
+/*
+ * I've unrolled the loop eight times: large enough to make a
+ * significant difference, and small enough not to totally trash the
+ * cashe.
+ */
+
+ENTRY(strcat)
+	pushl	%edi			/* save edi */
+	movl	8(%esp),%edi		/* dst address */
+	movl	12(%esp),%edx		/* src address */
+	pushl	%edi			/* push destination address */
+
+	cld				/* set search forward */
+	xorl	%eax,%eax		/* set search for null terminator */
+	movl	$-1,%ecx		/* set search for lots of characters */
+	repne				/* search! */
+	scasb
+
+	leal	-1(%edi),%ecx		/* correct dst address */
+
+	.align 2,0x90
+L1:	movb	(%edx),%al		/* unroll loop, but not too much */
+	movb	%al,(%ecx)
+	testb	%al,%al
+	je	L2
+	movb	1(%edx),%al
+	movb	%al,1(%ecx)
+	testb	%al,%al
+	je	L2
+	movb	2(%edx),%al
+	movb	%al,2(%ecx)
+	testb	%al,%al
+	je	L2
+	movb	3(%edx),%al
+	movb	%al,3(%ecx)
+	testb	%al,%al
+	je	L2
+	movb	4(%edx),%al
+	movb	%al,4(%ecx)
+	testb	%al,%al
+	je	L2
+	movb	5(%edx),%al
+	movb	%al,5(%ecx)
+	testb	%al,%al
+	je	L2
+	movb	6(%edx),%al
+	movb	%al,6(%ecx)
+	testb	%al,%al
+	je	L2
+	movb	7(%edx),%al
+	movb	%al,7(%ecx)
+	addl	$8,%edx
+	addl	$8,%ecx
+	testb	%al,%al
+	jne	L1
+L2:	popl	%eax			/* pop destination address */
+	popl	%edi			/* restore edi */
+	ret
diff --git a/lib/libc/i386/string/strchr.S b/lib/libc/i386/string/strchr.S
new file mode 100644
index 0000000..dd2e680
--- /dev/null
+++ b/lib/libc/i386/string/strchr.S
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 1993 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: strchr.S,v 1.1 1994/08/05 01:18:33 wollman Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: strchr.S,v 1.1 1994/08/05 01:18:33 wollman Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+/*
+ * strchr(s, c)
+ *	return a pointer to the first occurance of the character c in
+ *	string s, or NULL if c does not occur in the string.
+ *
+ * %edx - pointer iterating through string
+ * %eax - pointer to first occurance of 'c'
+ * %cl  - character we're comparing against
+ * %bl  - character at %edx
+ *
+ * Written by:
+ *	J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ */
+
+ENTRY(strchr)
+	pushl	%ebx
+	movl	8(%esp),%eax
+	movb	12(%esp),%cl
+	.align 2,0x90
+L1:
+	movb	(%eax),%bl
+	cmpb	%bl,%cl			/* found char??? */
+	je 	L2
+	incl	%eax
+	testb	%bl,%bl			/* null terminator??? */
+	jne	L1
+	xorl	%eax,%eax
+L2:
+	popl	%ebx
+	ret
diff --git a/lib/libc/i386/string/strcmp.S b/lib/libc/i386/string/strcmp.S
new file mode 100644
index 0000000..ef076c5
--- /dev/null
+++ b/lib/libc/i386/string/strcmp.S
@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 1993 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: strcmp.S,v 1.1 1994/08/05 01:18:34 wollman Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: strcmp.S,v 1.1 1994/08/05 01:18:34 wollman Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+/*
+ * strcmp(s1, s2)
+ *	return an integer greater than, equal to, or less than 0, 
+ *	according as string s1 is greater than, equal to, or less
+ *	than the string s2.  
+ *
+ * %eax - pointer to s1
+ * %edx - pointer to s2
+ *
+ * Written by:
+ *	J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ */
+
+/*
+ * I've unrolled the loop eight times: large enough to make a
+ * significant difference, and small enough not to totally trash the
+ * cashe.
+ */
+
+ENTRY(strcmp)
+	movl	0x04(%esp),%eax	
+	movl	0x08(%esp),%edx	
+	jmp	L2			/* Jump into the loop! */
+
+	.align	2,0x90
+L1:	incl	%eax
+	incl	%edx			
+L2:	movb	(%eax),%cl
+	testb	%cl,%cl
+	je	L3
+	cmpb	%cl,(%edx)
+	jne	L3
+	incl	%eax
+	incl	%edx
+	movb	(%eax),%cl
+	testb	%cl,%cl
+	je	L3
+	cmpb	%cl,(%edx)
+	jne	L3
+	incl	%eax
+	incl	%edx
+	movb	(%eax),%cl
+	testb	%cl,%cl
+	je	L3
+	cmpb	%cl,(%edx)
+	jne	L3
+	incl	%eax
+	incl	%edx
+	movb	(%eax),%cl
+	testb	%cl,%cl
+	je	L3
+	cmpb	%cl,(%edx)
+	jne	L3
+	incl	%eax
+	incl	%edx
+	movb	(%eax),%cl
+	testb	%cl,%cl
+	je	L3
+	cmpb	%cl,(%edx)
+	jne	L3
+	incl	%eax
+	incl	%edx
+	movb	(%eax),%cl
+	testb	%cl,%cl
+	je	L3
+	cmpb	%cl,(%edx)
+	jne	L3
+	incl	%eax
+	incl	%edx
+	movb	(%eax),%cl
+	testb	%cl,%cl
+	je	L3
+	cmpb	%cl,(%edx)
+	jne	L3
+	incl	%eax
+	incl	%edx
+	movb	(%eax),%cl
+	testb	%cl,%cl
+	je	L3
+	cmpb	%cl,(%edx)
+	je	L1
+	.align 2, 0x90
+L3:     movzbl  (%eax),%eax             /* unsigned comparison */
+	movzbl  (%edx),%edx
+	subl	%edx,%eax
+	ret
diff --git a/lib/libc/i386/string/strcpy.S b/lib/libc/i386/string/strcpy.S
new file mode 100644
index 0000000..2d93e46
--- /dev/null
+++ b/lib/libc/i386/string/strcpy.S
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 1993 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: strcpy.S,v 1.1 1994/08/05 01:18:34 wollman Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: strcpy.S,v 1.1 1994/08/05 01:18:34 wollman Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+/*
+ * strcpy (dst, src)
+ *	copy the string src to dst.
+ *
+ * Written by:
+ *	J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ */
+
+/*
+ * I've unrolled the loop eight times: large enough to make a
+ * significant difference, and small enough not to totally trash the
+ * cashe.
+ */
+
+ENTRY(strcpy)
+	movl	4(%esp),%ecx		/* dst address */
+	movl	8(%esp),%edx		/* src address */
+	pushl	%ecx			/* push dst address */
+
+	.align 2,0x90
+L1:	movb	(%edx),%al		/* unroll loop, but not too much */
+	movb	%al,(%ecx)
+	testb	%al,%al
+	je	L2
+	movb	1(%edx),%al
+	movb	%al,1(%ecx)
+	testb	%al,%al
+	je	L2
+	movb	2(%edx),%al
+	movb	%al,2(%ecx)
+	testb	%al,%al
+	je	L2
+	movb	3(%edx),%al
+	movb	%al,3(%ecx)
+	testb	%al,%al
+	je	L2
+	movb	4(%edx),%al
+	movb	%al,4(%ecx)
+	testb	%al,%al
+	je	L2
+	movb	5(%edx),%al
+	movb	%al,5(%ecx)
+	testb	%al,%al
+	je	L2
+	movb	6(%edx),%al
+	movb	%al,6(%ecx)
+	testb	%al,%al
+	je	L2
+	movb	7(%edx),%al
+	movb	%al,7(%ecx)
+	addl	$8,%edx
+	addl	$8,%ecx
+	testb	%al,%al
+	jne	L1
+L2:	popl	%eax			/* pop dst address */
+	ret
diff --git a/lib/libc/i386/string/strlen.S b/lib/libc/i386/string/strlen.S
new file mode 100644
index 0000000..16eee1a
--- /dev/null
+++ b/lib/libc/i386/string/strlen.S
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 1993 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: strlen.S,v 1.1 1994/08/05 01:18:35 wollman Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: strlen.S,v 1.1 1994/08/05 01:18:35 wollman Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+/*
+ * strlen (s)
+ *	compute the length of the string s.
+ *
+ * Written by:
+ *	J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ */
+
+ENTRY(strlen)
+	pushl	%edi
+	movl	8(%esp),%edi		/* string address */
+	cld				/* set search forward */
+	xorl	%eax,%eax		/* set search for null terminator */
+	movl	$-1,%ecx		/* set search for lots of characters */
+	repne				/* search! */
+	scasb
+	notl	%ecx			/* get length by taking complement */
+	leal	-1(%ecx),%eax		/* and subtracting one */
+	popl	%edi
+	ret
diff --git a/lib/libc/i386/string/strncmp.S b/lib/libc/i386/string/strncmp.S
new file mode 100644
index 0000000..20788bd
--- /dev/null
+++ b/lib/libc/i386/string/strncmp.S
@@ -0,0 +1,172 @@
+/*
+ * Copyright (c) 1993,94 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: strncmp.S,v 1.2 1994/12/27 13:12:34 bde Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: strncmp.S,v 1.2 1994/12/27 13:12:34 bde Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+/*
+ * strncmp(s1, s2, n)
+ *	return an integer greater than, equal to, or less than 0,
+ *	according as the first n characters of string s1 is greater
+ *	than, equal to, or less than the string s2.
+ *
+ * %eax - pointer to s1
+ * %ecx - pointer to s2
+ * %edx - length
+ *
+ * Written by:
+ *	J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ */
+
+/*
+ * I've unrolled the loop eight times: large enough to make a
+ * significant difference, and small enough not to totally trash the
+ * cache.
+ *
+ * TODO: change all the jz's back to je for consistency.
+ */
+
+ENTRY(strncmp)
+	pushl	%ebx
+	movl	8(%esp),%eax
+	movl	12(%esp),%ecx
+	movl	16(%esp),%edx
+	testl	%edx,%edx
+	jmp	L2			/* Jump into the loop! */
+
+	.align 2,0x90
+L1:	incl	%eax
+	incl	%ecx
+	decl	%edx
+L2:	jz	L4			/* strings are equal */
+	movb	(%eax),%bl
+	testb	%bl,%bl
+	jz	L3
+	cmpb	%bl,(%ecx)
+	jne	L3
+
+/*
+ * XXX it might be best to move the next 4 instructions to the end of the
+ * unrolled part of the loop.  The unrolled part would then be
+ *	movb n(%eax),%bl; testb %bl, %bl; je L3; cmpb n(%ecx); jne L3
+ * or maybe better
+ *	movb n(%eax),%bl; cmpb n(%ecx); jne L3; testb %bl,%bl; je return_0
+ * for n = 0, 1, ..., 8.  The end of the loop would be
+ *	L1: addl $8,%eax; addl $8,%ecx; subl $8,%edx; cmpl $8,%edx; jae Lx
+ * where residual counts of 0 to 7 are handled at Lx.  However, this would
+ * be slower for short strings.  Cache effects are probably not so
+ * important because we are only handling a byte at a time.
+ */
+	incl	%eax
+	incl	%ecx
+	decl	%edx
+	jz	L4
+	movb	(%eax),%bl
+	testb	%bl,%bl
+	jz	L3
+	cmpb	%bl,(%ecx)
+	jne	L3
+
+	incl	%eax
+	incl	%ecx
+	decl	%edx
+	jz	L4
+	movb	(%eax),%bl
+	testb	%bl,%bl
+	jz	L3
+	cmpb	%bl,(%ecx)
+	jne	L3
+
+	incl	%eax
+	incl	%ecx
+	decl	%edx
+	jz	L4
+	movb	(%eax),%bl
+	testb	%bl,%bl
+	jz	L3
+	cmpb	%bl,(%ecx)
+	jne	L3
+
+	incl	%eax
+	incl	%ecx
+	decl	%edx
+	jz	L4
+	movb	(%eax),%bl
+	testb	%bl,%bl
+	jz	L3
+	cmpb	%bl,(%ecx)
+	jne	L3
+
+	incl	%eax
+	incl	%ecx
+	decl	%edx
+	jz	L4
+	movb	(%eax),%bl
+	testb	%bl,%bl
+	jz	L3
+	cmpb	%bl,(%ecx)
+	jne	L3
+
+	incl	%eax
+	incl	%ecx
+	decl	%edx
+	jz	L4
+	movb	(%eax),%bl
+	testb	%bl,%bl
+	jz	L3
+	cmpb	%bl,(%ecx)
+	jne	L3
+
+	incl	%eax
+	incl	%ecx
+	decl	%edx
+	jz	L4
+	movb	(%eax),%bl
+	testb	%bl,%bl
+	jz	L3
+	cmpb	%bl,(%ecx)
+	je	L1
+
+	.align 2,0x90
+L3:	movzbl	(%eax),%eax		/* unsigned comparison */
+	movzbl	(%ecx),%ecx
+	subl	%ecx,%eax
+	popl	%ebx
+	ret
+	.align 2,0x90
+L4:	xorl	%eax,%eax
+	popl	%ebx
+	ret
diff --git a/lib/libc/i386/string/strrchr.S b/lib/libc/i386/string/strrchr.S
new file mode 100644
index 0000000..28f0637
--- /dev/null
+++ b/lib/libc/i386/string/strrchr.S
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 1993 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: strrchr.S,v 1.1 1994/08/05 01:18:37 wollman Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+        .asciz "$Id: strrchr.S,v 1.1 1994/08/05 01:18:37 wollman Exp $"
+#endif /* LIBC_RCS and not lint */
+
+#include "DEFS.h"
+
+/*
+ * strrchr(s, c)
+ *	return a pointer to the last occurance of the character c in
+ *	string s, or NULL if c does not occur in the string.
+ *
+ * %edx - pointer iterating through string
+ * %eax - pointer to last occurance of 'c'
+ * %cl  - character we're comparing against
+ * %bl  - character at %edx
+ *
+ * Written by:
+ *	J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ */
+
+ENTRY(strrchr)
+	pushl	%ebx
+	movl	8(%esp),%edx
+	movb	12(%esp),%cl
+	xorl	%eax,%eax		/* init pointer to null */
+	.align 2,0x90
+L1:
+	movb	(%edx),%bl
+	cmpb	%bl,%cl
+	jne	L2
+	movl	%edx,%eax
+L2:	
+	incl	%edx
+	testb	%bl,%bl			/* null terminator??? */
+	jne	L1
+	popl	%ebx
+	ret
diff --git a/lib/libc/i386/string/swab.S b/lib/libc/i386/string/swab.S
new file mode 100644
index 0000000..87deded
--- /dev/null
+++ b/lib/libc/i386/string/swab.S
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 1993,94 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: swab.S,v 1.1 1995/01/22 21:36:15 davidg Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id: swab.S,v 1.1 1995/01/22 21:36:15 davidg Exp $"
+#endif
+
+#include "DEFS.h"
+
+/*
+ * void
+ * swab (const void *src, void *dst, size_t len)
+ *	copy len bytes from src to dst, swapping adjacent bytes
+ *
+ * On the i486, this code is negligibly faster than the code generated
+ * by gcc at about half the size.  If my i386 databook is correct, it
+ * should be considerably faster than the gcc code on a i386.
+ *
+ * Written by:
+ *	J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ */
+
+ENTRY(swab)
+	pushl	%esi
+	pushl	%edi
+	movl	12(%esp),%esi
+	movl	16(%esp),%edi
+	movl	20(%esp),%ecx
+
+	cld				# set direction forward
+
+	shrl	$1,%ecx
+	testl	$7,%ecx			# copy first group of 1 to 7 words
+	jz	L2			# while swaping alternate bytes.
+	.align	2,0x90
+L1:	lodsw
+	rorw	$8,%ax
+	stosw
+	decl	%ecx
+	testl	$7,%ecx
+	jnz	L1
+
+L2:	shrl	$3,%ecx			# copy remainder 8 words at a time
+	jz	L4			# while swapping alternate bytes.
+	.align	2,0x90
+L3:	lodsw
+	rorw	$8,%ax
+	stosw
+	lodsw
+	rorw	$8,%ax
+	stosw
+	lodsw
+	rorw	$8,%ax
+	stosw
+	lodsw
+	rorw	$8,%ax
+	stosw
+	lodsw
+	rorw	$8,%ax
+	stosw
+	lodsw
+	rorw	$8,%ax
+	stosw
+	lodsw
+	rorw	$8,%ax
+	stosw
+	lodsw
+	rorw	$8,%ax
+	stosw
+	decl	%ecx
+	jnz	L3
+
+L4:	popl	%edi
+	popl	%esi
+	ret
diff --git a/lib/libc/i386/sys/Makefile.inc b/lib/libc/i386/sys/Makefile.inc
new file mode 100644
index 0000000..6774dd3
--- /dev/null
+++ b/lib/libc/i386/sys/Makefile.inc
@@ -0,0 +1,10 @@
+#	from: Makefile.inc,v 1.1 1993/09/03 19:04:23 jtc Exp
+#	$Id$
+
+.PATH:	${.CURDIR}/${MACHINE}/sys
+
+SRCS+=	i386_get_ldt.c i386_set_ldt.c
+
+MAN2+=	i386/sys/i386_get_ldt.2
+
+MLINKS+=i386_get_ldt.2 i386_set_ldt.2
diff --git a/lib/libc/i386/sys/Ovfork.S b/lib/libc/i386/sys/Ovfork.S
new file mode 100644
index 0000000..06e3eb6
--- /dev/null
+++ b/lib/libc/i386/sys/Ovfork.S
@@ -0,0 +1,81 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: Ovfork.S,v 1.1 1994/08/05 01:18:38 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+/*
+ * pid = vfork();
+ *
+ * %edx == 0 in parent process, %edx == 1 in child process.
+ * %eax == pid of child in parent, %eax == pid of parent in child.
+ *
+ */
+	.set	vfork,66
+.globl	_vfork
+.type	_vfork,@function
+
+_vfork:
+	popl	%ecx		/* my rta into ecx */
+	movl	$vfork, %eax
+	LCALL(7,0)
+	jb	verror
+vforkok:
+	cmpl	$0,%edx		/* child process? */
+	jne	child		/* yes */
+	jmp 	parent 
+.globl	_errno
+verror:
+#ifdef PIC
+	PIC_PROLOGUE
+	movl	PIC_GOT(_errno), %edx
+	movl	%eax,(%edx)
+	PIC_EPILOGUE
+#else
+	movl	%eax,_errno
+#endif
+	movl	$-1,%eax
+	jmp	%ecx
+child:
+	movl	$0,%eax
+parent:
+	jmp	%ecx
diff --git a/lib/libc/i386/sys/brk.S b/lib/libc/i386/sys/brk.S
new file mode 100644
index 0000000..c8311bb
--- /dev/null
+++ b/lib/libc/i386/sys/brk.S
@@ -0,0 +1,92 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: brk.S,v 1.1 1994/08/05 01:18:39 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+#define	SYS_brk		17
+
+	.globl	curbrk
+	.globl	minbrk
+ENTRY(_brk)
+	jmp	ok
+
+ENTRY(brk)
+#ifdef PIC
+	movl	4(%esp),%eax
+	PIC_PROLOGUE
+	movl	PIC_GOT(curbrk),%edx	# set up GOT addressing
+	movl	PIC_GOT(minbrk),%ecx	#
+	cmpl	%eax,(%ecx)
+	PIC_EPILOGUE
+	jl	ok
+	movl	(%ecx),%eax
+	movl	%eax,4(%esp)
+ok:
+	lea	SYS_brk,%eax
+	LCALL(7,0)
+	jb	err
+	movl	4(%esp),%eax
+	movl	%eax,(%edx)
+	movl	$0,%eax
+	ret
+err:
+	jmp	PIC_PLT(cerror)
+
+#else
+
+	movl	4(%esp),%eax
+	cmpl	%eax,minbrk
+	jl	ok
+	movl	minbrk,%eax
+	movl	%eax,4(%esp)
+ok:
+	lea	SYS_brk,%eax
+	LCALL(7,0)
+	jb	err
+	movl	4(%esp),%eax
+	movl	%eax,curbrk
+	movl	$0,%eax
+	ret
+err:
+	jmp	cerror
+#endif
diff --git a/lib/libc/i386/sys/cerror.S b/lib/libc/i386/sys/cerror.S
new file mode 100644
index 0000000..875f6db
--- /dev/null
+++ b/lib/libc/i386/sys/cerror.S
@@ -0,0 +1,58 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: cerror.S,v 1.2 1994/08/13 14:00:26 davidg Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+	.globl	_errno
+cerror:
+#ifdef PIC
+	PIC_PROLOGUE
+	movl	PIC_GOT(_errno),%ecx
+	movl	%eax,(%ecx)
+	PIC_EPILOGUE
+#else
+	movl	%eax,_errno
+#endif
+	movl	$-1,%eax
+	movl	$-1,%edx
+	ret
diff --git a/lib/libc/i386/sys/exect.S b/lib/libc/i386/sys/exect.S
new file mode 100644
index 0000000..74a055b
--- /dev/null
+++ b/lib/libc/i386/sys/exect.S
@@ -0,0 +1,55 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: exect.S,v 1.1 1994/08/05 01:18:42 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+#include <machine/psl.h>
+
+ENTRY(exect)
+	lea	SYS_execve,%eax
+	pushf
+	popl	%edx
+	orl	$ PSL_T,%edx
+	pushl	%edx
+	popf
+	LCALL(7,0)
+	jmp	cerror		/* exect(file, argv, env); */
diff --git a/lib/libc/i386/sys/fork.S b/lib/libc/i386/sys/fork.S
new file mode 100644
index 0000000..fe4c36d
--- /dev/null
+++ b/lib/libc/i386/sys/fork.S
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: fork.S,v 1.1 1994/08/05 01:18:44 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+SYSCALL(fork)
+	cmpl	$0,%edx	/* parent, since %edx == 0 in parent, 1 in child */
+	je	1f
+	movl	$0,%eax
+1:
+	ret		/* pid = fork(); */
diff --git a/lib/libc/i386/sys/i386_get_ldt.2 b/lib/libc/i386/sys/i386_get_ldt.2
new file mode 100644
index 0000000..ade7e10
--- /dev/null
+++ b/lib/libc/i386/sys/i386_get_ldt.2
@@ -0,0 +1,98 @@
+.\" Copyright (c) 1980, 1991 Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     from: @(#)fork.2	6.5 (Berkeley) 3/10/91
+.\"	$Id: i386_get_ldt.2,v 1.2 1993/10/09 00:59:10 cgd Exp $
+.\"
+.Dd September 20, 1993
+.Dt I386_GET_LDT 2
+.Os FreeBSD
+.Sh NAME
+.Nm i386_get_ldt ,
+.Nm i386_set_ldt
+.Nd manage i386 per-process Local Descriptor Table entries
+.Sh SYNOPSIS
+.Fd #include <machine/segments.h>
+.Fd #include <machine/sysarch.h>
+.Ft int
+.Fn i386_get_ldt "int start_sel" "union descriptor *descs" "int num_sels"
+.Ft int
+.Fn i386_set_ldt "int start_sel" "union descriptor *descs" "int num_sels"
+.Sh DESCRIPTION
+.Fn i386_get_ldt
+will return the list of i386 descriptors that the process has in its
+LDT.
+.Fn i386_set_ldt
+will set a list of i386 descriptors for the current process in its
+LDT.
+Both routines accept a starting selector number
+.Fa start_sel
+, an array of memory that
+will contain the descriptors to be set or returned 
+.Fa descs
+, and the number of entries to set or return
+.Fa num_sels .
+.Pp
+The argument
+.Fa descs
+can be either segment_descriptor or gate_descriptor and are defined in
+.Fd <i386/segments.h> .
+These structures are defined by the architecure
+as disjoint bit-fields, so care must be taken in constructing them.
+.Sh RETURN VALUES
+Upon successful completion,
+.Fn i386_get_ldt
+returns the number of descriptors currently in the LDT.
+.Fn i386_set_ldt
+returns the first selector set.
+Otherwise, a value of -1 is returned and the global
+variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn i386_get_ldt
+and
+.Fn i386_set_ldt
+will fail if:
+.Bl -tag -width [EINVAL]
+.It Bq Er EINVAL
+An inappropriate parameter was used for
+.Fa start_sel
+or
+.Fa num_sels .
+.It Bq Er EACESS
+The caller attempted to use a descriptor that would
+circumvent protection or cause a failure.
+.El
+.Sh REFERENCES
+i386 Microprocessor Programmer's Reference Manual, Intel
+.Sh WARNING
+You can really hose your process using this.
diff --git a/lib/libc/i386/sys/i386_get_ldt.c b/lib/libc/i386/sys/i386_get_ldt.c
new file mode 100644
index 0000000..8c4e5d2
--- /dev/null
+++ b/lib/libc/i386/sys/i386_get_ldt.c
@@ -0,0 +1,55 @@
+/*
+ *  Copyright (c) 1993 John Brezak
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions
+ *  are met:
+ *  1. Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: i386_get_ldt.c,v 1.2 1995/01/23 01:29:50 davidg Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+static const char rcsid[] = "$Id: i386_get_ldt.c,v 1.2 1995/01/23 01:29:50 davidg Exp $";
+#endif /* LIBC_RCS and not lint */
+
+#include <sys/cdefs.h>
+#include <machine/segments.h>
+#include <machine/sysarch.h>
+
+struct parms {
+        int			start;
+        union descriptor	*descs;
+        int			num;
+};
+
+int
+i386_get_ldt(int start, union descriptor *descs, int num)
+{
+        struct parms p;
+
+        p.start = start;
+        p.descs = descs;
+        p.num   = num;
+
+	return sysarch(I386_GET_LDT, (char *)&p);
+}
diff --git a/lib/libc/i386/sys/i386_set_ldt.c b/lib/libc/i386/sys/i386_set_ldt.c
new file mode 100644
index 0000000..8754fd1
--- /dev/null
+++ b/lib/libc/i386/sys/i386_set_ldt.c
@@ -0,0 +1,55 @@
+/*
+ *  Copyright (c) 1993 John Brezak
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions
+ *  are met:
+ *  1. Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: i386_set_ldt.c,v 1.2 1995/01/23 01:29:53 davidg Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+static const char rcsid[] = "$Id: i386_set_ldt.c,v 1.2 1995/01/23 01:29:53 davidg Exp $";
+#endif /* LIBC_RCS and not lint */
+
+#include <sys/cdefs.h>
+#include <machine/segments.h>
+#include <machine/sysarch.h>
+
+struct parms {
+        int			start;
+        union descriptor	*descs;
+        int			num;
+};
+
+int
+i386_set_ldt(int start, union descriptor *descs, int num)
+{
+        struct parms p;
+
+        p.start = start;
+        p.descs = descs;
+        p.num   = num;
+
+	return sysarch(I386_SET_LDT, (char *)&p);
+}
diff --git a/lib/libc/i386/sys/mount.S b/lib/libc/i386/sys/mount.S
new file mode 100644
index 0000000..3fbcd63
--- /dev/null
+++ b/lib/libc/i386/sys/mount.S
@@ -0,0 +1,48 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: mount.S,v 1.1 1994/08/05 01:18:45 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+SYSCALL(mount)
+	movl	$0,%eax
+	ret
diff --git a/lib/libc/i386/sys/pipe.S b/lib/libc/i386/sys/pipe.S
new file mode 100644
index 0000000..cf3264c
--- /dev/null
+++ b/lib/libc/i386/sys/pipe.S
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: pipe.S,v 1.1 1994/08/05 01:18:46 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+SYSCALL(pipe)
+	movl	4(%esp),%ecx
+	movl	%eax,(%ecx)
+	movl	%edx,4(%ecx)
+	movl	$0,%eax
+	ret
diff --git a/lib/libc/i386/sys/ptrace.S b/lib/libc/i386/sys/ptrace.S
new file mode 100644
index 0000000..e3ac3a5
--- /dev/null
+++ b/lib/libc/i386/sys/ptrace.S
@@ -0,0 +1,61 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: ptrace.S,v 1.1 1994/08/05 01:18:47 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+ENTRY(ptrace)
+	xorl	%eax,%eax
+#ifdef PIC
+        PIC_PROLOGUE
+        movl    PIC_GOT(_errno),%edx
+        movl    %eax,(%edx)
+        PIC_EPILOGUE
+#else
+        movl    %eax,_errno
+#endif
+	lea	SYS_ptrace,%eax
+	LCALL(7,0)
+	jb	err
+	ret
+err:
+	jmp	cerror
diff --git a/lib/libc/i386/sys/reboot.S b/lib/libc/i386/sys/reboot.S
new file mode 100644
index 0000000..f90cca0
--- /dev/null
+++ b/lib/libc/i386/sys/reboot.S
@@ -0,0 +1,47 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: reboot.S,v 1.1 1994/08/05 01:18:48 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+SYSCALL(reboot)
+	iret
diff --git a/lib/libc/i386/sys/sbrk.S b/lib/libc/i386/sys/sbrk.S
new file mode 100644
index 0000000..2d65b59
--- /dev/null
+++ b/lib/libc/i386/sys/sbrk.S
@@ -0,0 +1,96 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: sbrk.S,v 1.2 1995/01/23 01:30:04 davidg Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id: sbrk.S,v 1.2 1995/01/23 01:30:04 davidg Exp $"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+#define	SYS_brk		17
+
+	.globl	_end
+	.globl	minbrk
+	.globl	curbrk
+
+	.data
+minbrk:	.long	_end
+curbrk:	.long	_end
+	.text
+
+ENTRY(sbrk)
+#ifdef PIC
+	movl	4(%esp),%ecx
+	PIC_PROLOGUE
+	movl	PIC_GOT(curbrk),%edx
+	movl	(%edx),%eax
+	PIC_EPILOGUE
+	testl	%ecx,%ecx
+	jz	back
+	addl	%eax,4(%esp)
+	lea	SYS_brk,%eax
+	LCALL(7,0)
+	jb	err
+	PIC_PROLOGUE
+	movl	PIC_GOT(curbrk),%edx
+	movl	(%edx),%eax
+	addl	%ecx,(%edx)
+	PIC_EPILOGUE
+back:
+	ret
+err:
+	jmp	PIC_PLT(cerror)
+
+#else /* !PIC */
+
+	movl	4(%esp),%ecx
+	movl	curbrk,%eax
+	testl	%ecx,%ecx
+	jz	back
+	addl	%eax,4(%esp)
+	lea	SYS_brk,%eax
+	LCALL(7,0)
+	jb	err
+	movl	curbrk,%eax
+	addl	%ecx,curbrk
+back:
+	ret
+err:
+	jmp	cerror
+#endif /* PIC */
diff --git a/lib/libc/i386/sys/setlogin.S b/lib/libc/i386/sys/setlogin.S
new file mode 100644
index 0000000..96c7886
--- /dev/null
+++ b/lib/libc/i386/sys/setlogin.S
@@ -0,0 +1,59 @@
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: setlogin.S,v 1.1 1994/08/05 01:18:50 wollman Exp $
+ */
+
+#if defined(LIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* LIBC_RCS and not lint */
+
+#include "SYS.h"
+
+.globl	__logname_valid		/* in getlogin() */
+
+SYSCALL(setlogin)
+#ifdef PIC
+	PIC_PROLOGUE
+	pushl	%eax
+	movl	PIC_GOT(__logname_valid),%eax
+	movl	$0,(%eax)
+	popl	%eax
+	PIC_EPILOGUE
+#else
+	movl	$0,__logname_valid
+#endif
+	ret				/* setlogin(name) */
diff --git a/lib/libc/i386/sys/sigpending.S b/lib/libc/i386/sys/sigpending.S
new file mode 100644
index 0000000..fdc1e9f
--- /dev/null
+++ b/lib/libc/i386/sys/sigpending.S
@@ -0,0 +1,50 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: sigpending.S,v 1.1 1994/08/05 01:18:51 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+SYSCALL(sigpending)
+	movl	4(%esp),%ecx		# fetch pointer to...
+	movl	%eax,(%ecx)		# store old mask
+	xorl	%eax,%eax
+	ret
diff --git a/lib/libc/i386/sys/sigprocmask.S b/lib/libc/i386/sys/sigprocmask.S
new file mode 100644
index 0000000..1757a3a
--- /dev/null
+++ b/lib/libc/i386/sys/sigprocmask.S
@@ -0,0 +1,67 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: sigprocmask.S,v 1.1 1994/08/05 01:18:52 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+err:
+	jmp	cerror
+
+ENTRY(sigprocmask)
+	movl	8(%esp),%ecx		# fetch new sigset pointer
+	cmpl	$0,%ecx			# check new sigset pointer
+	jne	1f			# if not null, indirect
+/*	movl	$0,8(%esp)		# null mask pointer: block empty set */
+	movl	$1,4(%esp)		# SIG_BLOCK
+	jmp	2f
+1:	movl	(%ecx),%ecx		# fetch indirect  ...
+	movl	%ecx,8(%esp)		# to new mask arg
+2:	movl	$ SYS_sigprocmask , %eax
+	LCALL(0x7,0)
+	jb	err
+	movl	12(%esp),%ecx		# fetch old mask requested
+	cmpl	$0,%ecx			# test if old mask requested
+	je	out
+	movl	%eax,(%ecx)		# store old mask
+out:
+	xorl	%eax,%eax
+	ret
diff --git a/lib/libc/i386/sys/sigreturn.S b/lib/libc/i386/sys/sigreturn.S
new file mode 100644
index 0000000..ac0ffd6
--- /dev/null
+++ b/lib/libc/i386/sys/sigreturn.S
@@ -0,0 +1,57 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: sigreturn.S,v 1.1 1994/08/05 01:18:53 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+/*
+ * We must preserve the state of the registers as the user has set them up.
+ */
+#ifdef PROF
+#undef ENTRY
+#define	ENTRY(x) \
+	.globl _/**/x; .align 2; _/**/x:  pusha ; \
+	.data; 1:; .long 0; .text; movl $1b,%eax; call mcount; popa ; nop
+#endif /* PROF */
+
+SYSCALL(sigreturn)
+	ret
diff --git a/lib/libc/i386/sys/sigsuspend.S b/lib/libc/i386/sys/sigsuspend.S
new file mode 100644
index 0000000..a72154a
--- /dev/null
+++ b/lib/libc/i386/sys/sigsuspend.S
@@ -0,0 +1,57 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+err:
+	jmp	cerror
+
+ENTRY(sigsuspend)
+	movl	4(%esp),%eax		# fetch mask arg
+	movl	(%eax),%eax		# indirect to mask arg
+	movl	%eax,4(%esp)
+	movl	$ SYS_sigsuspend ,%eax
+	LCALL(0x7,0)
+	jb	err
+	xorl	%eax,%eax		# shouldn t happen
+	ret
diff --git a/lib/libc/i386/sys/syscall.S b/lib/libc/i386/sys/syscall.S
new file mode 100644
index 0000000..8fcbec9
--- /dev/null
+++ b/lib/libc/i386/sys/syscall.S
@@ -0,0 +1,56 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id: syscall.S,v 1.1 1994/08/05 01:18:55 wollman Exp $
+ */
+
+#if defined(SYSLIBC_RCS) && !defined(lint)
+	.text
+	.asciz "$Id$"
+#endif /* SYSLIBC_RCS and not lint */
+
+#include "SYS.h"
+
+ENTRY(syscall)
+	pop	%ecx	/* rta */
+	pop	%eax	/* syscall number */
+	push	%ecx
+	LCALL(7,0)
+	push	%ecx	/* need to push a word to keep stack frame intact
+			   upon return; the word must be the return address. */
+	jb	1f
+	ret
+1:
+	jmp	cerror
diff --git a/lib/libc/locale/Makefile.inc b/lib/libc/locale/Makefile.inc
new file mode 100644
index 0000000..5fd09d2
--- /dev/null
+++ b/lib/libc/locale/Makefile.inc
@@ -0,0 +1,21 @@
+#	@(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+
+# locale sources
+.PATH: ${.CURDIR}/${MACHINE}/locale ${.CURDIR}/locale
+
+SRCS+=	ansi.c ctype.c euc.c frune.c isctype.c lconv.c localeconv.c \
+	mbrune.c none.c rune.c setlocale.c table.c utf2.c setrunelocale.c \
+	runetype.c tolower.c toupper.c nomacros.c collate.c setinvalidrune.c
+
+MAN3+=	locale/ctype.3 locale/isalnum.3 locale/isalpha.3 locale/isascii.3 \
+	locale/isblank.3 locale/iscntrl.3 locale/isdigit.3 locale/isgraph.3 \
+	locale/islower.3 locale/isprint.3 locale/ispunct.3 locale/isspace.3 \
+	locale/isupper.3 locale/isxdigit.3 locale/mbrune.3 locale/multibyte.3 \
+	locale/rune.3 locale/setlocale.3 locale/toascii.3 locale/tolower.3 \
+	locale/toupper.3
+MAN4+=	locale/euc.4 locale/utf2.4
+MLINKS+= rune.3 setrunelocale.3 rune.3 setinvalidrune.3 rune.3 sgetrune.3 \
+	 rune.3 sputrune.3 rune.3 fgetrune.3 rune.3 fungetrune.3 \
+	 rune.3 fputrune.3 mbrune.3 mbrrune.3 mbrune.3 mbmb.3 \
+	 multibyte.3 mblen.3 multibyte.3 mbstowcs.3 multibyte.3 mbtowc.3 \
+	 multibyte.3 wcstombs.3 multibyte.3 wctomb.3 setlocale.3 localeconv.3
diff --git a/lib/libc/locale/ansi.c b/lib/libc/locale/ansi.c
new file mode 100644
index 0000000..e5c8e8f
--- /dev/null
+++ b/lib/libc/locale/ansi.c
@@ -0,0 +1,148 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ansi.c	8.1 (Berkeley) 6/27/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdlib.h>
+#include <limits.h>
+#include <stddef.h>
+#include <rune.h>
+
+int
+mblen(s, n)
+	const char *s;
+	size_t n;
+{
+	char const *e;
+
+	if (s == 0 || *s == 0)
+		return (0);	/* No support for state dependent encodings. */
+
+	if (sgetrune(s, (int)n, &e) == _INVALID_RUNE)
+		return (s - e);
+	return (e - s);
+}
+
+int
+mbtowc(pwc, s, n)
+	wchar_t *pwc;
+	const char *s;
+	size_t n;
+{
+	char const *e;
+	rune_t r;
+
+	if (s == 0 || *s == 0)
+		return (0);	/* No support for state dependent encodings. */
+
+	if ((r = sgetrune(s, (int)n, &e)) == _INVALID_RUNE)
+		return (s - e);
+	if (pwc)
+		*pwc = r;
+	return (e - s);
+}
+
+int
+wctomb(s, wchar)
+	char *s;
+	wchar_t wchar;
+{
+	char *e;
+
+	if (s == 0)
+		return (0);	/* No support for state dependent encodings. */
+
+	if (wchar == 0) {
+		*s = 0;
+		return (1);
+	}
+
+	sputrune(wchar, s, MB_CUR_MAX, &e);
+	return (e ? e - s : -1);
+}
+
+size_t
+mbstowcs(pwcs, s, n)
+	wchar_t *pwcs;
+	const char *s;
+	size_t n;
+{
+	char const *e;
+	int cnt = 0;
+
+	if (!pwcs || !s)
+		return (-1);
+
+	while (n-- > 0) {
+		*pwcs = sgetrune(s, MB_LEN_MAX, &e);
+		if (*pwcs == _INVALID_RUNE)
+			return (-1);
+		if (*pwcs++ == 0)
+			break;
+		s = e;
+		++cnt;
+	}
+	return (cnt);
+}
+
+size_t
+wcstombs(s, pwcs, n)
+	char *s;
+	const wchar_t *pwcs;
+	size_t n;
+{
+	char *e;
+	int cnt = 0;
+
+	if (!pwcs || !s)
+		return (-1);
+
+	while (n > 0) {
+		if (*pwcs == 0) {
+			*s = 0;
+			break;
+		}
+		if (!sputrune(*pwcs++, s, (int)n, &e))
+			return (-1);		/* encoding error */
+		if (!e)			/* too long */
+			return (cnt);
+		cnt += e - s;
+		s = e;
+	}
+	return (cnt);
+}
diff --git a/lib/libc/locale/collate.c b/lib/libc/locale/collate.c
new file mode 100644
index 0000000..ef73cef
--- /dev/null
+++ b/lib/libc/locale/collate.c
@@ -0,0 +1,213 @@
+/*-
+ * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
+ *		at Electronni Visti IA, Kiev, Ukraine.
+ *			All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: collate.c,v 1.4 1995/05/30 05:40:40 rgrimes Exp $
+ */
+
+#include <rune.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sysexits.h>
+#include "collate.h"
+
+char *_PathLocale;
+int __collate_load_error = 1;
+u_char __collate_charmap_table[UCHAR_MAX + 1][STR_LEN];
+u_char __collate_substitute_table[UCHAR_MAX + 1][STR_LEN];
+struct __collate_st_char_pri __collate_char_pri_table[UCHAR_MAX + 1];
+struct __collate_st_name_pri __collate_name_pri_table[TABLE_SIZE];
+struct __collate_st_chain_pri __collate_chain_pri_table[TABLE_SIZE];
+
+#define FREAD(a, b, c, d) \
+	do { \
+		if(fread(a, b, c, d) != c) { \
+			fclose(d); \
+			return -1; \
+		} \
+	} while(0)
+
+__dead void __collate_err(int ex, const char *f) __dead2;
+
+int
+__collate_load_tables(encoding)
+	char *encoding;
+{
+	char buf[PATH_MAX];
+	FILE *fp;
+	int save_load_error;
+
+	save_load_error = __collate_load_error;
+	__collate_load_error = 1;
+	if (!encoding) {
+		__collate_load_error = save_load_error;
+		return -1;
+	}
+	if (!*encoding || !strcmp(encoding, "C") || !strcmp(encoding, "POSIX"))
+		return 0;
+	if (!_PathLocale && !(_PathLocale = getenv("PATH_LOCALE")))
+		_PathLocale = _PATH_LOCALE;
+	strcpy(buf, _PathLocale);
+	strcat(buf, "/");
+	strcat(buf, encoding);
+	strcat(buf, "/LC_COLLATE");
+	if ((fp = fopen(buf, "r")) == NULL) {
+		__collate_load_error = save_load_error;
+		return -1;
+	}
+	FREAD(__collate_charmap_table, sizeof(__collate_charmap_table), 1, fp);
+	FREAD(__collate_substitute_table, sizeof(__collate_substitute_table),
+	      1, fp);
+	FREAD(__collate_char_pri_table, sizeof(__collate_char_pri_table), 1,
+	      fp);
+	FREAD(__collate_chain_pri_table, sizeof(__collate_chain_pri_table), 1,
+	      fp);
+	FREAD(__collate_name_pri_table, sizeof(__collate_name_pri_table), 1,
+	      fp);
+	fclose(fp);
+	__collate_load_error = 0;
+	return 0;
+}
+
+u_char *
+__collate_substitute(s)
+	const u_char *s;
+{
+	int dest_len = 0, len = 0;
+	int delta = strlen(s);
+	u_char *dest_str = NULL;
+
+	if(s == NULL || *s == '\0')
+		return __collate_strdup("");
+	while(*s) {
+		len += strlen(__collate_substitute_table[*s]);
+		while(dest_len <= len) {
+			if(!dest_str)
+				dest_str = calloc(dest_len = delta, 1);
+			else
+				dest_str = realloc(dest_str, dest_len += delta);
+			if(dest_str == NULL)
+				__collate_err(EX_OSERR, __FUNCTION__);
+		}
+		strcat(dest_str, __collate_substitute_table[*s++]);
+	}
+	return dest_str;
+}
+
+void
+__collate_lookup(t, len, prim, sec)
+	u_char *t;
+	int *len, *prim, *sec;
+{
+	struct __collate_st_name_pri *p;
+	struct __collate_st_chain_pri *p2;
+
+	*len = 1;
+	*prim = *sec = 0;
+	if(__collate_charmap_table[*t][0]) {
+		for(p = __collate_name_pri_table; p->str[0]; p++) {
+			if(strncmp(__collate_charmap_table[*t], p->str, strlen(p->str))
+			   == 0) {
+				*prim = p->prim;
+				*sec = p->sec;
+				return;
+			}
+		}
+		return;
+	}
+	for(p2 = __collate_chain_pri_table; p2->str[0]; p2++) {
+		if(strncmp(t, p2->str, strlen(p2->str)) == 0) {
+			*len = strlen(p2->str);
+			*prim = p2->prim;
+			*sec = p2->sec;
+			return;
+		}
+	}
+	*prim = __collate_char_pri_table[*t].prim;
+	*sec = __collate_char_pri_table[*t].sec;
+}
+
+u_char *
+__collate_strdup(s)
+	u_char *s;
+{
+	u_char *t = strdup(s);
+
+	if (t == NULL)
+		__collate_err(EX_OSERR, __FUNCTION__);
+	return t;
+}
+
+__dead void __collate_err(int ex, const char *f)
+{
+	extern char *__progname;                /* Program name, from crt0. */
+	const char *s;
+	int serrno = errno;
+
+	s = __progname;
+	write(STDERR_FILENO, s, strlen(s));
+	write(STDERR_FILENO, ": ", 2);
+	s = f;
+	write(STDERR_FILENO, s, strlen(s));
+	write(STDERR_FILENO, ": ", 2);
+	s = strerror(serrno);
+	write(STDERR_FILENO, s, strlen(s));
+	write(STDERR_FILENO, "\n", 1);
+	exit(ex);
+}
+
+#ifdef COLLATE_DEBUG
+void
+__collate_print_tables()
+{
+	int i;
+	struct __collate_st_name_pri *p;
+	struct __collate_st_chain_pri *p2;
+
+	printf("Substitute table:\n");
+	for (i = 0; i < UCHAR_MAX + 1; i++)
+		printf("\t'%c' --> \"%s\"\n", i,
+		       __collate_substitute_table[i]);
+	printf("Charmap table:\n");
+	for (i = 0; i < UCHAR_MAX + 1; i++) {
+		if (__collate_charmap_table[i][0])
+			printf("\t\\x%02x --> \"%s\"\n", i,
+			       __collate_charmap_table[i]);
+	}
+	printf("Name priority table:\n");
+	for (p = __collate_name_pri_table; p->str[0]; p++)
+		printf("\t\"%s\" : %d %d\n\n", p->str, p->prim, p->sec);
+	printf("Chain priority table:\n");
+	for (p2 = __collate_chain_pri_table; p2->str[0]; p2++)
+		printf("\t\"%s\" : %d %d\n\n", p2->str, p2->prim, p2->sec);
+	printf("Char priority table:\n");
+	for (i = 0; i < UCHAR_MAX + 1; i++)
+		printf("\t'%c' : %d %d\n", i, __collate_char_pri_table[i].prim,
+		       __collate_char_pri_table[i].sec);
+}
+#endif
diff --git a/lib/libc/locale/collate.h b/lib/libc/locale/collate.h
new file mode 100644
index 0000000..c7c0b6d
--- /dev/null
+++ b/lib/libc/locale/collate.h
@@ -0,0 +1,69 @@
+/*-
+ * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
+ *		at Electronni Visti IA, Kiev, Ukraine.
+ *			All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: collate.h,v 1.4 1995/01/27 12:51:06 alex Exp alex $
+ */
+
+#ifndef COLLATE_H_INCLUDED
+#define COLLATE_H_INCLUDED
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <limits.h>
+
+#define STR_LEN 10
+#define TABLE_SIZE 100
+
+struct __collate_st_char_pri {
+	int prim, sec;
+};
+struct __collate_st_name_pri {
+	u_char str[STR_LEN];
+	int prim, sec;
+};
+struct __collate_st_chain_pri {
+	u_char str[STR_LEN];
+	int prim, sec;
+};
+
+extern int __collate_load_error;
+extern u_char __collate_charmap_table[UCHAR_MAX + 1][STR_LEN];
+extern u_char __collate_substitute_table[UCHAR_MAX + 1][STR_LEN];
+extern struct __collate_st_char_pri __collate_char_pri_table[UCHAR_MAX + 1];
+extern struct __collate_st_name_pri __collate_name_pri_table[TABLE_SIZE];
+extern struct __collate_st_chain_pri __collate_chain_pri_table[TABLE_SIZE];
+
+__BEGIN_DECLS
+u_char *__collate_strdup __P((u_char *));
+u_char *__collate_substitute __P((const u_char *));
+int __collate_load_tables __P((char *));
+void __collate_lookup __P((u_char *, int *, int *, int *));
+#ifdef COLLATE_DEBUG
+void __collate_print_tables __P((void));
+#endif
+__END_DECLS
+
+#endif /* not COLLATE_H_INCLUDED */
diff --git a/lib/libc/locale/ctype.3 b/lib/libc/locale/ctype.3
new file mode 100644
index 0000000..528df27
--- /dev/null
+++ b/lib/libc/locale/ctype.3
@@ -0,0 +1,107 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)ctype.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt CTYPE 3
+.Os
+.Sh NAME
+.Nm isalnum ,
+.Nm isalpha ,
+.Nm isascii ,
+.Nm isblank ,
+.Nm iscntrl ,
+.Nm isdigit ,
+.Nm isgraph ,
+.Nm islower ,
+.Nm isprint ,
+.Nm ispunct ,
+.Nm isspace ,
+.Nm isupper ,
+.Nm isxdigit ,
+.Nm toascii
+.Nm tolower ,
+.Nm toupper ,
+.Nd character classification macros
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Fa int c
+.br
+.Fn isalnum "int c"
+.Fn isalpha "int c"
+.Fn isascii "int c"
+.Fn iscntrl "int c"
+.Fn isdigit "int c"
+.Fn isgraph "int c"
+.Fn islower "int c"
+.Fn isprint "int c"
+.Fn ispunct "int c"
+.Fn isspace "int c"
+.Fn isupper "int c"
+.Fn isxdigit "int c"
+.Fn toascii "int c"
+.Fn tolower "int c"
+.Fn toupper "int c"
+.Sh DESCRIPTION
+The above functions perform character tests and conversions on the integer
+.Ar c .
+They are available as macros, defined in the include file
+.Aq Pa ctype.h ,
+or as true functions in the C library.
+See the specific manual pages for more information.
+.Sh SEE ALSO
+.Xr isalnum 3 ,
+.Xr isalpha 3 ,
+.Xr isascii 3 ,
+.Xr isblank 3 ,
+.Xr iscntrl 3 ,
+.Xr isdigit 3 ,
+.Xr isgraph 3 ,
+.Xr islower 3 ,
+.Xr isprint 3 ,
+.Xr ispunct 3 ,
+.Xr isspace 3 ,
+.Xr isupper 3 ,
+.Xr isxdigit 3 ,
+.Xr toascii 3 ,
+.Xr tolower 3 ,
+.Xr toupper 3 ,
+.Xr ascii 7
+.Sh STANDARDS
+These functions, except for
+.Fn isblank ,
+.Fn toupper ,
+.Fn tolower
+and
+.Fn toascii ,
+conform to
+.St -ansiC .
diff --git a/lib/libc/locale/ctype.c b/lib/libc/locale/ctype.c
new file mode 100644
index 0000000..0418b1a
--- /dev/null
+++ b/lib/libc/locale/ctype.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ * (c) UNIX System Laboratories, Inc.
+ * All or some portions of this file are derived from material licensed
+ * to the University of California by American Telephone and Telegraph
+ * Co. or Unix System Laboratories, Inc. and are reproduced herein with
+ * the permission of UNIX System Laboratories, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ctype.c	8.2 (Berkeley) 1/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#define	_U	0x01
+#define	_L	0x02
+#define	_N	0x04
+#define	_S	0x08
+#define	_P	0x10
+#define	_C	0x20
+#define	_X	0x40
+#define	_B	0x80
+
+char __ctype[1 + 256] = {
+	0,
+	_C,	_C,	_C,	_C,	_C,	_C,	_C,	_C,
+	_C,	_C|_S,	_C|_S,	_C|_S,	_C|_S,	_C|_S,	_C,	_C,
+	_C,	_C,	_C,	_C,	_C,	_C,	_C,	_C,
+	_C,	_C,	_C,	_C,	_C,	_C,	_C,	_C,
+	_S|_B,	_P,	_P,	_P,	_P,	_P,	_P,	_P,
+	_P,	_P,	_P,	_P,	_P,	_P,	_P,	_P,
+	_N,	_N,	_N,	_N,	_N,	_N,	_N,	_N,
+	_N,	_N,	_P,	_P,	_P,	_P,	_P,	_P,
+	_P,	_U|_X,	_U|_X,	_U|_X,	_U|_X,	_U|_X,	_U|_X,	_U,
+	_U,	_U,	_U,	_U,	_U,	_U,	_U,	_U,
+	_U,	_U,	_U,	_U,	_U,	_U,	_U,	_U,
+	_U,	_U,	_U,	_P,	_P,	_P,	_P,	_P,
+	_P,	_L|_X,	_L|_X,	_L|_X,	_L|_X,	_L|_X,	_L|_X,	_L,
+	_L,	_L,	_L,	_L,	_L,	_L,	_L,	_L,
+	_L,	_L,	_L,	_L,	_L,	_L,	_L,	_L,
+	_L,	_L,	_L,	_P,	_P,	_P,	_P,	_C
+};
+
+char *_ctype_ = __ctype;		/* Backward compatibility. */
diff --git a/lib/libc/locale/euc.4 b/lib/libc/locale/euc.4
new file mode 100644
index 0000000..966b896
--- /dev/null
+++ b/lib/libc/locale/euc.4
@@ -0,0 +1,231 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Paul Borman at Krystal Technologies.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)euc.4	8.1 (Berkeley) 6/4/93
+.\"
+.Dd "June 4, 1993"
+.Dt EUC 4
+.Os
+.Sh NAME
+.Nm EUC
+.Nd EUC encoding of runes
+.Sh SYNOPSIS
+\fBENCODING "EUC"\fP
+.br
+\fBVARIABLE \fP\fIlen1 mask1 len2 mask2 len3 mask3 len4 mask4 mask\fP
+.Sh DESCRIPTION
+The
+.Nm EUC
+encoding is provided for compatibility with
+.Ux
+based systems.
+See
+.Xr mklocale 1
+for a complete description of the
+.Ev LC_CTYPE
+source file format.
+.Pp
+.Nm EUC
+implements a system of 4 multibyte codesets.
+A multibyte character in the first codeset consists of
+.Ar len1
+bytes starting with a byte in the range of 0x00 to 0x7f.
+To allow use of ASCII,
+.Ar len1
+is always 1.
+A multibyte character in the second codeset consists of
+.Ar len2
+bytes starting with a byte in the range of 0x80-0xff excluding 0x8e and 0x8f.
+A multibyte character in the third codeset consists of
+.Ar len3
+bytes starting with the byte 0x8e.
+A multibyte character in the fourth codeset consists of
+.Ar len4
+bytes starting with the byte 0x8f.
+.Pp
+The 
+.Ev rune_t
+encoding of
+.Nm EUC
+multibyte characters is dependent on the
+.Ar len
+and
+.Ar mask
+arguments.
+First, the bytes are moved into a
+.Ev rune_t
+as follows:
+.Bd -literal
+byte0 << ((\fIlen\fPN-1) * 8) | byte1 << ((\fIlen\fPN-2) * 8) | ... | byte\fIlen\fPN-1
+.Ed
+.sp
+The result is then ANDed with
+.Ar ~mask
+and ORed with
+.Ar mask\fPN.
+Codesets 2 and 3 are special in that the leading byte (0x8e or 0x8f) is
+first removed and the
+.Ar len\fPN
+argument is reduced by 1.
+.sp
+For example, the Japanese locale has the following
+.Ev VARIABLE
+line:
+.Bd -literal
+VARIABLE	1 0x0000 2 0x8080 2 0x0080 3 0x8000 0x8080
+.Ed
+.sp
+Codeset 1 consists of the values 0x0000 - 0x007f.
+.sp
+Codeset 2 consists of the values who have the bits 0x8080 set.
+.sp
+Codeset 3 consists of the values 0x0080 - 0x00ff.
+.sp
+Codeset 4 consists of the values 0x8000 - 0xff7f excluding the values
+which have the 0x0080 bit set.
+.sp
+Notice that the global
+.Ar mask
+is set to 0x8080, this implies that from those 2 bits the codeset can
+be determined.
+.Sh "EXAMPLE - Japanese Locale"
+This is a complete example of an
+.Ev LC_CTYPE
+source file for the Japanese locale
+.Bd -literal
+/*
+ * Japanese LOCALE_CTYPE definitions using EUC of JIS character sets
+ */
+
+ENCODING	"EUC"
+
+/*		JIS	 JIS	  JIS			*/
+/*		X201	 X208	  X201 			*/
+/*		00-7f		  84-fe			*/
+
+VARIABLE	1 0x0000 2 0x8080 2 0x0080 3 0x8000 0x8080
+
+/*
+ * Code Set 1
+ */
+ALPHA		'A' - 'Z' 'a' - 'z'
+CONTROL		0x00 - 0x1f 0x7f
+DIGIT		'0' - '9'
+GRAPH		0x21 - 0x7e
+LOWER		'a' - 'z'
+PUNCT		0x21 - 0x2f 0x3a - 0x40 0x5b - 0x60 0x7b - 0x7e
+SPACE		0x09 - 0x0d 0x20
+UPPER		'A' - 'Z'
+XDIGIT		'a' - 'f' 'A' - 'F'
+BLANK		' ' '\t'
+PRINT		0x20 - 0x7e
+
+MAPLOWER	< 'A' - 'Z' : 'a' > < 'a' - 'z' : 'a' >
+MAPUPPER	< 'A' - 'Z' : 'A' > < 'a' - 'z' : 'A' >
+TODIGIT		< '0' - '9' : 0 >
+TODIGIT		< 'A' - 'F' : 10 > < 'a' - 'f' : 10 >
+
+/*
+ * Code Set 2
+ */
+
+SPACE		0xa1a1
+PHONOGRAM	0xa1bc
+SPECIAL		0xa1a2 - 0xa1fe
+PUNCT		0xa1a2 - 0xa1f8		/* A few too many in here... */
+
+SPECIAL		0xa2a1 - 0xa2ae 0xa2ba - 0xa2c1 0xa2ca - 0xa2d0 0xa2dc - 0xa2ea
+SPECIAL		0xa2f2 - 0xa2f9 0xa2fe
+
+DIGIT		0xa3b0 - 0xa3b9
+UPPER		0xa3c1 - 0xa3da				/* Romaji */
+LOWER		0xa3e1 - 0xa3fa				/* Romaji */
+MAPLOWER	< 0xa3c1 - 0xa3da : 0xa3e1 >			/* English */
+MAPLOWER	< 0xa3e1 - 0xa3fa : 0xa3e1 >			/* English */
+MAPUPPER	< 0xa3c1 - 0xa3da : 0xa3c1 >
+MAPUPPER	< 0xa3e1 - 0xa3fa : 0xa3c1 >
+
+XDIGIT		0xa3c1 - 0xa3c6 0xa3e1 - 0xa3e6
+
+TODIGIT		< 0xa3b0 - 0xa3b9 : 0 >
+TODIGIT		< 0xa3c1 - 0xa3c6 : 10 > < 0xa3e1 - 0xa3e6 : 10 >
+
+PHONOGRAM	0xa4a1 - 0xa4f3
+PHONOGRAM	0xa5a1 - 0xa5f6
+
+UPPER		0xa6a1 - 0xa6b8				/* Greek */
+LOWER		0xa6c1 - 0xa6d8				/* Greek */
+MAPLOWER	< 0xa6a1 - 0xa6b8 : 0xa6c1 > < 0xa6c1 - 0xa6d8 : 0xa6c1 >
+MAPUPPER	< 0xa6a1 - 0xa6b8 : 0xa6a1 > < 0xa6c1 - 0xa6d8 : 0xa6a1 >
+
+UPPER		0xa7a1 - 0xa7c1				/* Cyrillic */
+LOWER		0xa7d1 - 0xa7f1				/* Cyrillic */
+MAPLOWER	< 0xa7a1 - 0xa7c1 : 0xa7d1 > < 0xa7d1 - 0xa7f1 : 0xa7d1 >
+MAPUPPER	< 0xa7a1 - 0xa7c1 : 0xa7a1 > < 0xa7d1 - 0xa7f1 : 0xa7a1 >
+
+SPECIAL		0xa8a1 - 0xa8c0
+
+IDEOGRAM	0xb0a1 - 0xb0fe 0xb1a1 - 0xb1fe 0xb2a1 - 0xb2fe
+IDEOGRAM	0xb3a1 - 0xb3fe 0xb4a1 - 0xb4fe 0xb5a1 - 0xb5fe
+IDEOGRAM	0xb6a1 - 0xb6fe 0xb7a1 - 0xb7fe 0xb8a1 - 0xb8fe
+IDEOGRAM	0xb9a1 - 0xb9fe 0xbaa1 - 0xbafe 0xbba1 - 0xbbfe
+IDEOGRAM	0xbca1 - 0xbcfe 0xbda1 - 0xbdfe 0xbea1 - 0xbefe
+IDEOGRAM	0xbfa1 - 0xbffe 0xc0a1 - 0xc0fe 0xc1a1 - 0xc1fe
+IDEOGRAM	0xc2a1 - 0xc2fe 0xc3a1 - 0xc3fe 0xc4a1 - 0xc4fe
+IDEOGRAM	0xc5a1 - 0xc5fe 0xc6a1 - 0xc6fe 0xc7a1 - 0xc7fe
+IDEOGRAM	0xc8a1 - 0xc8fe 0xc9a1 - 0xc9fe 0xcaa1 - 0xcafe
+IDEOGRAM	0xcba1 - 0xcbfe 0xcca1 - 0xccfe 0xcda1 - 0xcdfe
+IDEOGRAM	0xcea1 - 0xcefe 0xcfa1 - 0xcfd3 0xd0a1 - 0xd0fe
+IDEOGRAM	0xd1a1 - 0xd1fe 0xd2a1 - 0xd2fe 0xd3a1 - 0xd3fe
+IDEOGRAM	0xd4a1 - 0xd4fe 0xd5a1 - 0xd5fe 0xd6a1 - 0xd6fe
+IDEOGRAM	0xd7a1 - 0xd7fe 0xd8a1 - 0xd8fe 0xd9a1 - 0xd9fe
+IDEOGRAM	0xdaa1 - 0xdafe 0xdba1 - 0xdbfe 0xdca1 - 0xdcfe
+IDEOGRAM	0xdda1 - 0xddfe 0xdea1 - 0xdefe 0xdfa1 - 0xdffe
+IDEOGRAM	0xe0a1 - 0xe0fe 0xe1a1 - 0xe1fe 0xe2a1 - 0xe2fe
+IDEOGRAM	0xe3a1 - 0xe3fe 0xe4a1 - 0xe4fe 0xe5a1 - 0xe5fe
+IDEOGRAM	0xe6a1 - 0xe6fe 0xe7a1 - 0xe7fe 0xe8a1 - 0xe8fe
+IDEOGRAM	0xe9a1 - 0xe9fe 0xeaa1 - 0xeafe 0xeba1 - 0xebfe
+IDEOGRAM	0xeca1 - 0xecfe 0xeda1 - 0xedfe 0xeea1 - 0xeefe
+IDEOGRAM	0xefa1 - 0xeffe 0xf0a1 - 0xf0fe 0xf1a1 - 0xf1fe
+IDEOGRAM	0xf2a1 - 0xf2fe 0xf3a1 - 0xf3fe 0xf4a1 - 0xf4a4
+/*
+ * This is for Code Set 3, half-width kana
+ */
+SPECIAL		0xa1 - 0xdf
+PHONOGRAM	0xa1 - 0xdf
+CONTROL		0x84 - 0x97 0x9b - 0x9f 0xe0 - 0xfe
+.Ed
+.Sh "SEE ALSO"
+.Xr mklocale 1 ,
+.Xr setlocale 3
diff --git a/lib/libc/locale/euc.5 b/lib/libc/locale/euc.5
new file mode 100644
index 0000000..966b896
--- /dev/null
+++ b/lib/libc/locale/euc.5
@@ -0,0 +1,231 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Paul Borman at Krystal Technologies.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)euc.4	8.1 (Berkeley) 6/4/93
+.\"
+.Dd "June 4, 1993"
+.Dt EUC 4
+.Os
+.Sh NAME
+.Nm EUC
+.Nd EUC encoding of runes
+.Sh SYNOPSIS
+\fBENCODING "EUC"\fP
+.br
+\fBVARIABLE \fP\fIlen1 mask1 len2 mask2 len3 mask3 len4 mask4 mask\fP
+.Sh DESCRIPTION
+The
+.Nm EUC
+encoding is provided for compatibility with
+.Ux
+based systems.
+See
+.Xr mklocale 1
+for a complete description of the
+.Ev LC_CTYPE
+source file format.
+.Pp
+.Nm EUC
+implements a system of 4 multibyte codesets.
+A multibyte character in the first codeset consists of
+.Ar len1
+bytes starting with a byte in the range of 0x00 to 0x7f.
+To allow use of ASCII,
+.Ar len1
+is always 1.
+A multibyte character in the second codeset consists of
+.Ar len2
+bytes starting with a byte in the range of 0x80-0xff excluding 0x8e and 0x8f.
+A multibyte character in the third codeset consists of
+.Ar len3
+bytes starting with the byte 0x8e.
+A multibyte character in the fourth codeset consists of
+.Ar len4
+bytes starting with the byte 0x8f.
+.Pp
+The 
+.Ev rune_t
+encoding of
+.Nm EUC
+multibyte characters is dependent on the
+.Ar len
+and
+.Ar mask
+arguments.
+First, the bytes are moved into a
+.Ev rune_t
+as follows:
+.Bd -literal
+byte0 << ((\fIlen\fPN-1) * 8) | byte1 << ((\fIlen\fPN-2) * 8) | ... | byte\fIlen\fPN-1
+.Ed
+.sp
+The result is then ANDed with
+.Ar ~mask
+and ORed with
+.Ar mask\fPN.
+Codesets 2 and 3 are special in that the leading byte (0x8e or 0x8f) is
+first removed and the
+.Ar len\fPN
+argument is reduced by 1.
+.sp
+For example, the Japanese locale has the following
+.Ev VARIABLE
+line:
+.Bd -literal
+VARIABLE	1 0x0000 2 0x8080 2 0x0080 3 0x8000 0x8080
+.Ed
+.sp
+Codeset 1 consists of the values 0x0000 - 0x007f.
+.sp
+Codeset 2 consists of the values who have the bits 0x8080 set.
+.sp
+Codeset 3 consists of the values 0x0080 - 0x00ff.
+.sp
+Codeset 4 consists of the values 0x8000 - 0xff7f excluding the values
+which have the 0x0080 bit set.
+.sp
+Notice that the global
+.Ar mask
+is set to 0x8080, this implies that from those 2 bits the codeset can
+be determined.
+.Sh "EXAMPLE - Japanese Locale"
+This is a complete example of an
+.Ev LC_CTYPE
+source file for the Japanese locale
+.Bd -literal
+/*
+ * Japanese LOCALE_CTYPE definitions using EUC of JIS character sets
+ */
+
+ENCODING	"EUC"
+
+/*		JIS	 JIS	  JIS			*/
+/*		X201	 X208	  X201 			*/
+/*		00-7f		  84-fe			*/
+
+VARIABLE	1 0x0000 2 0x8080 2 0x0080 3 0x8000 0x8080
+
+/*
+ * Code Set 1
+ */
+ALPHA		'A' - 'Z' 'a' - 'z'
+CONTROL		0x00 - 0x1f 0x7f
+DIGIT		'0' - '9'
+GRAPH		0x21 - 0x7e
+LOWER		'a' - 'z'
+PUNCT		0x21 - 0x2f 0x3a - 0x40 0x5b - 0x60 0x7b - 0x7e
+SPACE		0x09 - 0x0d 0x20
+UPPER		'A' - 'Z'
+XDIGIT		'a' - 'f' 'A' - 'F'
+BLANK		' ' '\t'
+PRINT		0x20 - 0x7e
+
+MAPLOWER	< 'A' - 'Z' : 'a' > < 'a' - 'z' : 'a' >
+MAPUPPER	< 'A' - 'Z' : 'A' > < 'a' - 'z' : 'A' >
+TODIGIT		< '0' - '9' : 0 >
+TODIGIT		< 'A' - 'F' : 10 > < 'a' - 'f' : 10 >
+
+/*
+ * Code Set 2
+ */
+
+SPACE		0xa1a1
+PHONOGRAM	0xa1bc
+SPECIAL		0xa1a2 - 0xa1fe
+PUNCT		0xa1a2 - 0xa1f8		/* A few too many in here... */
+
+SPECIAL		0xa2a1 - 0xa2ae 0xa2ba - 0xa2c1 0xa2ca - 0xa2d0 0xa2dc - 0xa2ea
+SPECIAL		0xa2f2 - 0xa2f9 0xa2fe
+
+DIGIT		0xa3b0 - 0xa3b9
+UPPER		0xa3c1 - 0xa3da				/* Romaji */
+LOWER		0xa3e1 - 0xa3fa				/* Romaji */
+MAPLOWER	< 0xa3c1 - 0xa3da : 0xa3e1 >			/* English */
+MAPLOWER	< 0xa3e1 - 0xa3fa : 0xa3e1 >			/* English */
+MAPUPPER	< 0xa3c1 - 0xa3da : 0xa3c1 >
+MAPUPPER	< 0xa3e1 - 0xa3fa : 0xa3c1 >
+
+XDIGIT		0xa3c1 - 0xa3c6 0xa3e1 - 0xa3e6
+
+TODIGIT		< 0xa3b0 - 0xa3b9 : 0 >
+TODIGIT		< 0xa3c1 - 0xa3c6 : 10 > < 0xa3e1 - 0xa3e6 : 10 >
+
+PHONOGRAM	0xa4a1 - 0xa4f3
+PHONOGRAM	0xa5a1 - 0xa5f6
+
+UPPER		0xa6a1 - 0xa6b8				/* Greek */
+LOWER		0xa6c1 - 0xa6d8				/* Greek */
+MAPLOWER	< 0xa6a1 - 0xa6b8 : 0xa6c1 > < 0xa6c1 - 0xa6d8 : 0xa6c1 >
+MAPUPPER	< 0xa6a1 - 0xa6b8 : 0xa6a1 > < 0xa6c1 - 0xa6d8 : 0xa6a1 >
+
+UPPER		0xa7a1 - 0xa7c1				/* Cyrillic */
+LOWER		0xa7d1 - 0xa7f1				/* Cyrillic */
+MAPLOWER	< 0xa7a1 - 0xa7c1 : 0xa7d1 > < 0xa7d1 - 0xa7f1 : 0xa7d1 >
+MAPUPPER	< 0xa7a1 - 0xa7c1 : 0xa7a1 > < 0xa7d1 - 0xa7f1 : 0xa7a1 >
+
+SPECIAL		0xa8a1 - 0xa8c0
+
+IDEOGRAM	0xb0a1 - 0xb0fe 0xb1a1 - 0xb1fe 0xb2a1 - 0xb2fe
+IDEOGRAM	0xb3a1 - 0xb3fe 0xb4a1 - 0xb4fe 0xb5a1 - 0xb5fe
+IDEOGRAM	0xb6a1 - 0xb6fe 0xb7a1 - 0xb7fe 0xb8a1 - 0xb8fe
+IDEOGRAM	0xb9a1 - 0xb9fe 0xbaa1 - 0xbafe 0xbba1 - 0xbbfe
+IDEOGRAM	0xbca1 - 0xbcfe 0xbda1 - 0xbdfe 0xbea1 - 0xbefe
+IDEOGRAM	0xbfa1 - 0xbffe 0xc0a1 - 0xc0fe 0xc1a1 - 0xc1fe
+IDEOGRAM	0xc2a1 - 0xc2fe 0xc3a1 - 0xc3fe 0xc4a1 - 0xc4fe
+IDEOGRAM	0xc5a1 - 0xc5fe 0xc6a1 - 0xc6fe 0xc7a1 - 0xc7fe
+IDEOGRAM	0xc8a1 - 0xc8fe 0xc9a1 - 0xc9fe 0xcaa1 - 0xcafe
+IDEOGRAM	0xcba1 - 0xcbfe 0xcca1 - 0xccfe 0xcda1 - 0xcdfe
+IDEOGRAM	0xcea1 - 0xcefe 0xcfa1 - 0xcfd3 0xd0a1 - 0xd0fe
+IDEOGRAM	0xd1a1 - 0xd1fe 0xd2a1 - 0xd2fe 0xd3a1 - 0xd3fe
+IDEOGRAM	0xd4a1 - 0xd4fe 0xd5a1 - 0xd5fe 0xd6a1 - 0xd6fe
+IDEOGRAM	0xd7a1 - 0xd7fe 0xd8a1 - 0xd8fe 0xd9a1 - 0xd9fe
+IDEOGRAM	0xdaa1 - 0xdafe 0xdba1 - 0xdbfe 0xdca1 - 0xdcfe
+IDEOGRAM	0xdda1 - 0xddfe 0xdea1 - 0xdefe 0xdfa1 - 0xdffe
+IDEOGRAM	0xe0a1 - 0xe0fe 0xe1a1 - 0xe1fe 0xe2a1 - 0xe2fe
+IDEOGRAM	0xe3a1 - 0xe3fe 0xe4a1 - 0xe4fe 0xe5a1 - 0xe5fe
+IDEOGRAM	0xe6a1 - 0xe6fe 0xe7a1 - 0xe7fe 0xe8a1 - 0xe8fe
+IDEOGRAM	0xe9a1 - 0xe9fe 0xeaa1 - 0xeafe 0xeba1 - 0xebfe
+IDEOGRAM	0xeca1 - 0xecfe 0xeda1 - 0xedfe 0xeea1 - 0xeefe
+IDEOGRAM	0xefa1 - 0xeffe 0xf0a1 - 0xf0fe 0xf1a1 - 0xf1fe
+IDEOGRAM	0xf2a1 - 0xf2fe 0xf3a1 - 0xf3fe 0xf4a1 - 0xf4a4
+/*
+ * This is for Code Set 3, half-width kana
+ */
+SPECIAL		0xa1 - 0xdf
+PHONOGRAM	0xa1 - 0xdf
+CONTROL		0x84 - 0x97 0x9b - 0x9f 0xe0 - 0xfe
+.Ed
+.Sh "SEE ALSO"
+.Xr mklocale 1 ,
+.Xr setlocale 3
diff --git a/lib/libc/locale/euc.c b/lib/libc/locale/euc.c
new file mode 100644
index 0000000..bc33ff6
--- /dev/null
+++ b/lib/libc/locale/euc.c
@@ -0,0 +1,222 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifdef XPG4
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)euc.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <rune.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+rune_t	_EUC_sgetrune __P((const char *, size_t, char const **));
+int	_EUC_sputrune __P((rune_t, char *, size_t, char **));
+
+typedef struct {
+	int	count[4];
+	rune_t	bits[4];
+	rune_t	mask;
+} _EucInfo;
+
+int
+_EUC_init(rl)
+	_RuneLocale *rl;
+{
+	_EucInfo *ei;
+	int x;
+	char *v, *e;
+
+	rl->sgetrune = _EUC_sgetrune;
+	rl->sputrune = _EUC_sputrune;
+
+	if (!rl->variable) {
+		free(rl);
+		return (EFTYPE);
+	}
+	v = (char *) rl->variable;
+
+	while (*v == ' ' || *v == '\t')
+		++v;
+
+	if ((ei = malloc(sizeof(_EucInfo))) == NULL) {
+		free(rl);
+		return (ENOMEM);
+	}
+	for (x = 0; x < 4; ++x) {
+		ei->count[x] = (int) strtol(v, &e, 0);
+		if (v == e || !(v = e)) {
+			free(rl);
+			free(ei);
+			return (EFTYPE);
+		}
+		while (*v == ' ' || *v == '\t')
+			++v;
+		ei->bits[x] = (int) strtol(v, &e, 0);
+		if (v == e || !(v = e)) {
+			free(rl);
+			free(ei);
+			return (EFTYPE);
+		}
+		while (*v == ' ' || *v == '\t')
+			++v;
+	}
+	ei->mask = (int)strtol(v, &e, 0);
+	if (v == e || !(v = e)) {
+		free(rl);
+		free(ei);
+		return (EFTYPE);
+	}
+	if (sizeof(_EucInfo) <= rl->variable_len) {
+		memcpy(rl->variable, ei, sizeof(_EucInfo));
+		free(ei);
+	} else {
+		rl->variable = &ei;
+	}
+	rl->variable_len = sizeof(_EucInfo);
+	_CurrentRuneLocale = rl;
+	__mb_cur_max = 3;
+	return (0);
+}
+
+#define	CEI	((_EucInfo *)(_CurrentRuneLocale->variable))
+
+#define	_SS2	0x008e
+#define	_SS3	0x008f
+
+static inline int
+_euc_set(c)
+	u_int c;
+{
+	c &= 0xff;
+
+	return ((c & 0x80) ? c == _SS3 ? 3 : c == _SS2 ? 2 : 1 : 0);
+}
+rune_t
+_EUC_sgetrune(string, n, result)
+	const char *string;
+	size_t n;
+	char const **result;
+{
+	rune_t rune = 0;
+	int len, set;
+
+	if (n < 1 || (len = CEI->count[set = _euc_set(*string)]) > n) {
+		if (result)
+			*result = string;
+		return (_INVALID_RUNE);
+	}
+	switch (set) {
+	case 3:
+	case 2:
+		--len;
+		++string;
+		/* FALLTHROUGH */
+	case 1:
+	case 0:
+		while (len-- > 0)
+			rune = (rune << 8) | ((u_int)(*string++) & 0xff);
+		break;
+	}
+	if (result)
+		*result = string;
+	return ((rune & ~CEI->mask) | CEI->bits[set]);
+}
+
+int
+_EUC_sputrune(c, string, n, result)
+	rune_t c;
+	char *string, **result;
+	size_t n;
+{
+	rune_t m = c & CEI->mask;
+	rune_t nm = c & ~m;
+	int i, len;
+
+	if (m == CEI->bits[1]) {
+CodeSet1:
+		/* Codeset 1: The first byte must have 0x80 in it. */
+		i = len = CEI->count[1];
+		if (n >= len) {
+			if (result)
+				*result = string + len;
+			while (i-- > 0)
+				*string++ = (nm >> (i << 3)) | 0x80;
+		} else
+			if (result)
+				*result = (char *) 0;
+	} else {
+		if (m == CEI->bits[0]) {
+			i = len = CEI->count[0];
+			if (n < len) {
+				if (result)
+					*result = NULL;
+				return (len);
+			}
+		} else
+			if (m == CEI->bits[2]) {
+				i = len = CEI->count[2];
+				if (n < len) {
+					if (result)
+						*result = NULL;
+					return (len);
+				}
+				*string++ = _SS2;
+				--i;
+			} else
+				if (m == CEI->bits[3]) {
+					i = len = CEI->count[3];
+					if (n < len) {
+						if (result)
+							*result = NULL;
+						return (len);
+					}
+					*string++ = _SS3;
+					--i;
+				} else
+					goto CodeSet1;	/* Bletch */
+		while (i-- > 0)
+			*string++ = (nm >> (i << 3)) & 0xff;
+		if (result)
+			*result = string;
+	}
+	return (len);
+}
+#endif  /* XPG4 */
diff --git a/lib/libc/locale/frune.c b/lib/libc/locale/frune.c
new file mode 100644
index 0000000..443d3ba
--- /dev/null
+++ b/lib/libc/locale/frune.c
@@ -0,0 +1,103 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)frune.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <limits.h>
+#include <rune.h>
+#include <stddef.h>
+#include <stdio.h>
+
+long
+fgetrune(fp)
+	FILE *fp;
+{
+	rune_t  r;
+	int c, len;
+	char buf[MB_LEN_MAX];
+	char const *result;
+
+	len = 0;
+	do {
+		if ((c = getc(fp)) == EOF) {
+			if (len)
+				break;
+			return (EOF);
+		}
+		buf[len++] = c;
+
+		if ((r = sgetrune(buf, len, &result)) != _INVALID_RUNE)
+			return (r);
+	} while (result == buf && len < MB_LEN_MAX);
+
+	while (--len > 0)
+		ungetc(buf[len], fp);
+	return (_INVALID_RUNE);
+}
+
+int
+fungetrune(r, fp)
+	rune_t r;
+	FILE* fp;
+{
+	int len;
+	char buf[MB_LEN_MAX];
+
+	len = sputrune(r, buf, MB_LEN_MAX, 0);
+	while (len-- > 0)
+		if (ungetc(buf[len], fp) == EOF)
+			return (EOF);
+	return (0);
+}
+
+int
+fputrune(r, fp)
+	rune_t r;
+	FILE *fp;
+{
+	int i, len;
+	char buf[MB_LEN_MAX];
+
+	len = sputrune(r, buf, MB_LEN_MAX, 0);
+
+	for (i = 0; i < len; ++i)
+		if (putc(buf[i], fp) == EOF)
+			return (EOF);
+
+	return (0);
+}
diff --git a/lib/libc/locale/isalnum.3 b/lib/libc/locale/isalnum.3
new file mode 100644
index 0000000..ad92c41
--- /dev/null
+++ b/lib/libc/locale/isalnum.3
@@ -0,0 +1,85 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)isalnum.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ISALNUM 3
+.Os
+.Sh NAME
+.Nm isalnum
+.Nd alphanumeric character test
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Ft int
+.Fn isalnum "int c";
+.Sh DESCRIPTION
+The
+.Fn isalnum
+function tests for any character for which 
+.Xr isalpha 3
+or
+.Xr isdigit 3
+is true.
+In the ASCII character set, this includes the following characters:
+.sp
+.Bl -column \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__
+.It \&060\ ``0'' \t061\ ``1'' \t062\ ``2'' \t063\ ``3'' \t064\ ``4''
+.It \&065\ ``5'' \t066\ ``6'' \t067\ ``7'' \t070\ ``8'' \t071\ ``9''
+.It \&101\ ``A'' \t102\ ``B'' \t103\ ``C'' \t104\ ``D'' \t105\ ``E''
+.It \&106\ ``F'' \t107\ ``G'' \t110\ ``H'' \t111\ ``I'' \t112\ ``J''
+.It \&113\ ``K'' \t114\ ``L'' \t115\ ``M'' \t116\ ``N'' \t117\ ``O''
+.It \&120\ ``P'' \t121\ ``Q'' \t122\ ``R'' \t123\ ``S'' \t124\ ``T''
+.It \&125\ ``U'' \t126\ ``V'' \t127\ ``W'' \t130\ ``X'' \t131\ ``Y''
+.It \&132\ ``Z'' \t141\ ``a'' \t142\ ``b'' \t143\ ``c'' \t144\ ``d''
+.It \&145\ ``e'' \t146\ ``f'' \t147\ ``g'' \t150\ ``h'' \t151\ ``i''
+.It \&152\ ``j'' \t153\ ``k'' \t154\ ``l'' \t155\ ``m'' \t156\ ``n''
+.It \&157\ ``o'' \t160\ ``p'' \t161\ ``q'' \t162\ ``r'' \t163\ ``s''
+.It \&164\ ``t'' \t165\ ``u'' \t166\ ``v'' \t167\ ``w'' \t170\ ``x''
+.It \&171\ ``y'' \t172\ ``z''
+.El
+.Sh RETURN VALUES
+The
+.Fn isalnum
+function returns zero if the character tests false and
+returns non-zero if the character tests true.
+.Sh SEE ALSO
+.Xr ctype 3 ,
+.Xr ascii 7
+.Sh STANDARDS
+The
+.Fn isalnum
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/locale/isalpha.3 b/lib/libc/locale/isalpha.3
new file mode 100644
index 0000000..a36dd4b
--- /dev/null
+++ b/lib/libc/locale/isalpha.3
@@ -0,0 +1,83 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)isalpha.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ISALPHA 3
+.Os
+.Sh NAME
+.Nm isalpha
+.Nd alphabetic character test
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Ft int 
+.Fn isalpha "int c";
+.Sh DESCRIPTION
+The
+.Fn isalpha
+function tests for any character for which
+.Xr isupper 3
+or
+.Xr islower 3
+is true.
+In the ASCII character set, this includes the following characters:
+.sp
+.Bl -column \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__
+.It \&101\ ``A'' \t102\ ``B'' \t103\ ``C'' \t104\ ``D'' \t105\ ``E''
+.It \&106\ ``F'' \t107\ ``G'' \t110\ ``H'' \t111\ ``I'' \t112\ ``J''
+.It \&113\ ``K'' \t114\ ``L'' \t115\ ``M'' \t116\ ``N'' \t117\ ``O''
+.It \&120\ ``P'' \t121\ ``Q'' \t122\ ``R'' \t123\ ``S'' \t124\ ``T''
+.It \&125\ ``U'' \t126\ ``V'' \t127\ ``W'' \t130\ ``X'' \t131\ ``Y''
+.It \&132\ ``Z'' \t141\ ``a'' \t142\ ``b'' \t143\ ``c'' \t144\ ``d''
+.It \&145\ ``e'' \t146\ ``f'' \t147\ ``g'' \t150\ ``h'' \t151\ ``i''
+.It \&152\ ``j'' \t153\ ``k'' \t154\ ``l'' \t155\ ``m'' \t156\ ``n''
+.It \&157\ ``o'' \t160\ ``p'' \t161\ ``q'' \t162\ ``r'' \t163\ ``s''
+.It \&164\ ``t'' \t165\ ``u'' \t166\ ``v'' \t167\ ``w'' \t170\ ``x''
+.It \&171\ ``y'' \t172\ ``z''
+.El
+.Sh RETURN VALUES
+The
+.Fn isalpha
+function returns zero if the character tests false and
+returns non-zero if the character tests true.
+.Sh SEE ALSO
+.Xr ctype 3 ,
+.Xr ascii 7
+.Sh STANDARDS
+The
+.Fn isalpha
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/locale/isascii.3 b/lib/libc/locale/isascii.3
new file mode 100644
index 0000000..9509dc5
--- /dev/null
+++ b/lib/libc/locale/isascii.3
@@ -0,0 +1,58 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)isascii.3	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt ISASCII 3
+.Os
+.Sh NAME
+.Nm isascii
+.Nd test for ASCII character
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Ft int
+.Fn isascii "int c";
+.Sh DESCRIPTION
+The
+.Fn isascii
+function tests for an
+.Tn ASCII
+character, which is any character with a value less than or
+equal to 0177.
+.Sh SEE ALSO
+.Xr ctype 3 ,
+.Xr ascii 7
+.Sh STANDARDS
+The
+.Fn isascii
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/locale/isblank.3 b/lib/libc/locale/isblank.3
new file mode 100644
index 0000000..7c83d18
--- /dev/null
+++ b/lib/libc/locale/isblank.3
@@ -0,0 +1,55 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)isblank.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ISBLANK 3
+.Os
+.Sh NAME
+.Nm isblank
+.Nd space or tab character test
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Ft int
+.Fn isblank "int c";
+.Sh DESCRIPTION
+The
+.Fn isblank
+function tests for a space or tab character.
+.Sh RETURN VALUES
+The
+.Fn isblank
+function returns zero if the character tests false and
+returns non-zero if the character tests true.
+.Sh SEE ALSO
+.Xr ctype 3 ,
+.Xr ascii 7
diff --git a/lib/libc/locale/iscntrl.3 b/lib/libc/locale/iscntrl.3
new file mode 100644
index 0000000..33859a2
--- /dev/null
+++ b/lib/libc/locale/iscntrl.3
@@ -0,0 +1,75 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)iscntrl.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ISCNTRL 3
+.Os
+.Sh NAME
+.Nm iscntrl
+.Nd control character test
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Ft int
+.Fn iscntrl "int c";
+.Sh DESCRIPTION
+The
+.Fn iscntrl
+function tests for any control character.
+In the ASCII character set, this includes the following characters:
+.sp
+.Bl -column \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__
+.It \&000\ nul \t001\ soh \t002\ stx \t003\ etx \t004\ eot
+.It \&005\ enq \t006\ ack \t007\ bel \t010\ bs \t011\ ht
+.It \&012\ nl \t013\ vt \t014\ np \t015\ cr \t016\ so
+.It \&017\ si \t020\ dle \t021\ dc1 \t022\ dc2 \t023\ dc3
+.It \&024\ dc4 \t025\ nak \t026\ syn \t027\ etb \t030\ can
+.It \&031\ em \t032\ sub \t033\ esc \t034\ fs \t035\ gs
+.It \&036\ rs \t037\ us \t177\ del
+.El
+.Sh RETURN VALUES
+The
+.Fn iscntrl
+function returns zero if the character tests false and
+returns non-zero if the character tests true.
+.Sh SEE ALSO
+.Xr ctype 3 ,
+.Xr ascii 7
+.Sh STANDARDS
+The
+.Fn iscntrl
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/locale/isctype.c b/lib/libc/locale/isctype.c
new file mode 100644
index 0000000..55cfdf0
--- /dev/null
+++ b/lib/libc/locale/isctype.c
@@ -0,0 +1,174 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ * (c) UNIX System Laboratories, Inc.
+ * All or some portions of this file are derived from material licensed
+ * to the University of California by American Telephone and Telegraph
+ * Co. or Unix System Laboratories, Inc. and are reproduced herein with
+ * the permission of UNIX System Laboratories, Inc.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)isctype.c	8.3 (Berkeley) 2/24/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <ctype.h>
+
+#undef isalnum
+int
+isalnum(c)
+	int c;
+{
+	return (__istype((c), (_A|_D)));
+}
+
+#undef isalpha
+int
+isalpha(c)
+	int c;
+{
+	return (__istype((c), _A));
+}
+
+#undef isascii
+int
+isascii(c)
+	int c;
+{
+	return (((c) & ~0x7F) == 0);
+}
+
+#undef isblank
+int
+isblank(c)
+	int c;
+{
+	return (__istype((c), _B));
+}
+
+#undef iscntrl
+int
+iscntrl(c)
+	int c;
+{
+	return (__istype((c), _C));
+}
+
+#undef isdigit
+int
+isdigit(c)
+	int c;
+{
+	return (__isctype((c), _D));
+}
+
+#undef isgraph
+int
+isgraph(c)
+	int c;
+{
+	return (__istype((c), _G));
+}
+
+#undef islower
+int
+islower(c)
+	int c;
+{
+	return (__istype((c), _L));
+}
+
+#undef isprint
+int
+isprint(c)
+	int c;
+{
+	return (__istype((c), _R));
+}
+
+#undef ispunct
+int
+ispunct(c)
+	int c;
+{
+	return (__istype((c), _P));
+}
+
+#undef isspace
+int
+isspace(c)
+	int c;
+{
+	return (__istype((c), _S));
+}
+
+#undef isupper
+int
+isupper(c)
+	int c;
+{
+	return (__istype((c), _U));
+}
+
+#undef isxdigit
+int
+isxdigit(c)
+	int c;
+{
+	return (__isctype((c), _X));
+}
+
+#undef toascii
+int
+toascii(c)
+	int c;
+{
+	return ((c) & 0x7F);
+}
+
+#undef tolower
+int
+tolower(c)
+	int c;
+{
+        return (__tolower(c));
+}
+
+#undef toupper
+int
+toupper(c)
+	int c;
+{
+        return (__toupper(c));
+}
diff --git a/lib/libc/locale/isdigit.3 b/lib/libc/locale/isdigit.3
new file mode 100644
index 0000000..aa70c30
--- /dev/null
+++ b/lib/libc/locale/isdigit.3
@@ -0,0 +1,70 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)isdigit.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ISDIGIT 3
+.Os
+.Sh NAME
+.Nm isdigit
+.Nd decimal-digit character test
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Ft int
+.Fn isdigit "int c";
+.Sh DESCRIPTION
+The
+.Fn isdigit
+function tests for any decimal-digit character.
+In the ASCII character set, this includes the following characters:
+.sp
+.Bl -column \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__
+.It \&060\ ``0'' \t061\ ``1'' \t062\ ``2'' \t063\ ``3'' \t064\ ``4''
+.It \&065\ ``5'' \t066\ ``6'' \t067\ ``7'' \t070\ ``8'' \t071\ ``9''
+.El
+.Sh RETURN VALUES
+The
+.Fn isdigit
+function returns zero if the character tests false and
+returns non-zero if the character tests true.
+.Sh SEE ALSO
+.Xr ctype 3 ,
+.Xr ascii 7
+.Sh STANDARDS
+The
+.Fn isdigit
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/locale/isgraph.3 b/lib/libc/locale/isgraph.3
new file mode 100644
index 0000000..e8b1ee5
--- /dev/null
+++ b/lib/libc/locale/isgraph.3
@@ -0,0 +1,87 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)isgraph.3	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt ISGRAPH 3
+.Os
+.Sh NAME
+.Nm isgraph
+.Nd printing character test (space character exclusive)
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Ft int
+.Fn isgraph "int c";
+.Sh DESCRIPTION
+The
+.Fn isgraph
+function tests for any printing character except space.
+In the ASCII character set, this includes the following characters:
+.sp
+.Bl -column \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__
+.It \&041\ ``!'' \t042\ ``"'' \t043\ ``#'' \t044\ ``$'' \t045\ ``%''
+.It \&046\ ``&'' \t047\ ``''' \t050\ ``('' \t051\ ``)'' \t052\ ``*''
+.It \&053\ ``+'' \t054\ ``,'' \t055\ ``-'' \t056\ ``.'' \t057\ ``/''
+.It \&060\ ``0'' \t061\ ``1'' \t062\ ``2'' \t063\ ``3'' \t064\ ``4''
+.It \&065\ ``5'' \t066\ ``6'' \t067\ ``7'' \t070\ ``8'' \t071\ ``9''
+.It \&072\ ``:'' \t073\ ``;'' \t074\ ``<'' \t075\ ``='' \t076\ ``>''
+.It \&077\ ``?'' \t100\ ``@'' \t101\ ``A'' \t102\ ``B'' \t103\ ``C''
+.It \&104\ ``D'' \t105\ ``E'' \t106\ ``F'' \t107\ ``G'' \t110\ ``H''
+.It \&111\ ``I'' \t112\ ``J'' \t113\ ``K'' \t114\ ``L'' \t115\ ``M''
+.It \&116\ ``N'' \t117\ ``O'' \t120\ ``P'' \t121\ ``Q'' \t122\ ``R''
+.It \&123\ ``S'' \t124\ ``T'' \t125\ ``U'' \t126\ ``V'' \t127\ ``W''
+.It \&130\ ``X'' \t131\ ``Y'' \t132\ ``Z'' \t133\ ``['' \t134\ ``\''
+.It \&135\ ``]'' \t136\ ``^'' \t137\ ``_'' \t140\ ```'' \t141\ ``a''
+.It \&142\ ``b'' \t143\ ``c'' \t144\ ``d'' \t145\ ``e'' \t146\ ``f''
+.It \&147\ ``g'' \t150\ ``h'' \t151\ ``i'' \t152\ ``j'' \t153\ ``k''
+.It \&154\ ``l'' \t155\ ``m'' \t156\ ``n'' \t157\ ``o'' \t160\ ``p''
+.It \&161\ ``q'' \t162\ ``r'' \t163\ ``s'' \t164\ ``t'' \t165\ ``u''
+.It \&166\ ``v'' \t167\ ``w'' \t170\ ``x'' \t171\ ``y'' \t172\ ``z''
+.It \&173\ ``{'' \t174\ ``|'' \t175\ ``}'' \t176\ ``~''
+.El
+.Sh RETURN VALUES
+The
+.Fn isgraph
+function returns zero if the character tests false and
+returns non-zero if the character tests true.
+.Sh SEE ALSO
+.Xr ctype 3 ,
+.Xr ascii 7
+.Sh STANDARDS
+The
+.Fn isgraph
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/locale/islower.3 b/lib/libc/locale/islower.3
new file mode 100644
index 0000000..e985498
--- /dev/null
+++ b/lib/libc/locale/islower.3
@@ -0,0 +1,74 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)islower.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ISLOWER 3
+.Os
+.Sh NAME
+.Nm islower
+.Nd lower-case character test
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Ft int
+.Fn islower "int c";
+.Sh DESCRIPTION
+The
+.Fn islower
+function tests for any lower-case letters.
+In the ASCII character set, this includes the following characters:
+.sp
+.Bl -column \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__
+.It \&141\ ``a'' \t142\ ``b'' \t143\ ``c'' \t144\ ``d'' \t145\ ``e''
+.It \&146\ ``f'' \t147\ ``g'' \t150\ ``h'' \t151\ ``i'' \t152\ ``j''
+.It \&153\ ``k'' \t154\ ``l'' \t155\ ``m'' \t156\ ``n'' \t157\ ``o''
+.It \&160\ ``p'' \t161\ ``q'' \t162\ ``r'' \t163\ ``s'' \t164\ ``t''
+.It \&165\ ``u'' \t166\ ``v'' \t167\ ``w'' \t170\ ``x'' \t171\ ``y''
+.It \&172\ ``z''
+.El
+.Sh RETURN VALUES
+The
+.Fn islower
+function returns zero if the character tests false and
+returns non-zero if the character tests true.
+.Sh SEE ALSO
+.Xr ctype 3 ,
+.Xr ascii 7
+.Sh STANDARDS
+The
+.Fn islower
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/locale/isprint.3 b/lib/libc/locale/isprint.3
new file mode 100644
index 0000000..dc04d50
--- /dev/null
+++ b/lib/libc/locale/isprint.3
@@ -0,0 +1,87 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)isprint.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ISPRINT 3
+.Os
+.Sh NAME
+.Nm isprint
+.Nd printing character test (space character inclusive)
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Ft int
+.Fn isprint "int c";
+.Sh DESCRIPTION
+The
+.Fn isprint
+function tests for any printing character including space (' ').
+In the ASCII character set, this includes the following characters:
+.sp
+.Bl -column \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__
+.It \&040\ sp \t041\ ``!'' \t042\ ``"'' \t043\ ``#'' \t044\ ``$''
+.It \&045\ ``%'' \t046\ ``&'' \t047\ ``''' \t050\ ``('' \t051\ ``)''
+.It \&052\ ``*'' \t053\ ``+'' \t054\ ``,'' \t055\ ``-'' \t056\ ``.''
+.It \&057\ ``/'' \t060\ ``0'' \t061\ ``1'' \t062\ ``2'' \t063\ ``3''
+.It \&064\ ``4'' \t065\ ``5'' \t066\ ``6'' \t067\ ``7'' \t070\ ``8''
+.It \&071\ ``9'' \t072\ ``:'' \t073\ ``;'' \t074\ ``<'' \t075\ ``=''
+.It \&076\ ``>'' \t077\ ``?'' \t100\ ``@'' \t101\ ``A'' \t102\ ``B''
+.It \&103\ ``C'' \t104\ ``D'' \t105\ ``E'' \t106\ ``F'' \t107\ ``G''
+.It \&110\ ``H'' \t111\ ``I'' \t112\ ``J'' \t113\ ``K'' \t114\ ``L''
+.It \&115\ ``M'' \t116\ ``N'' \t117\ ``O'' \t120\ ``P'' \t121\ ``Q''
+.It \&122\ ``R'' \t123\ ``S'' \t124\ ``T'' \t125\ ``U'' \t126\ ``V''
+.It \&127\ ``W'' \t130\ ``X'' \t131\ ``Y'' \t132\ ``Z'' \t133\ ``[''
+.It \&134\ ``\'' \t135\ ``]'' \t136\ ``^'' \t137\ ``_'' \t140\ ```''
+.It \&141\ ``a'' \t142\ ``b'' \t143\ ``c'' \t144\ ``d'' \t145\ ``e''
+.It \&146\ ``f'' \t147\ ``g'' \t150\ ``h'' \t151\ ``i'' \t152\ ``j''
+.It \&153\ ``k'' \t154\ ``l'' \t155\ ``m'' \t156\ ``n'' \t157\ ``o''
+.It \&160\ ``p'' \t161\ ``q'' \t162\ ``r'' \t163\ ``s'' \t164\ ``t''
+.It \&165\ ``u'' \t166\ ``v'' \t167\ ``w'' \t170\ ``x'' \t171\ ``y''
+.It \&172\ ``z'' \t173\ ``{'' \t174\ ``|'' \t175\ ``}'' \t176\ ``~''
+.El
+.Sh RETURN VALUES
+The
+.Fn isprint
+function returns zero if the character tests false and
+returns non-zero if the character tests true.
+.Sh SEE ALSO
+.Xr ctype 3 ,
+.Xr ascii 7
+.Sh STANDARDS
+The
+.Fn isprint
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/locale/ispunct.3 b/lib/libc/locale/ispunct.3
new file mode 100644
index 0000000..d5b3722
--- /dev/null
+++ b/lib/libc/locale/ispunct.3
@@ -0,0 +1,78 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)ispunct.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ISPUNCT 3
+.Os
+.Sh NAME
+.Nm ispunct
+.Nd punctuation character test
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Ft int
+.Fn ispunct "int c";
+.Sh DESCRIPTION
+The
+.Fn ispunct
+function tests for any printing character except for space (' ') or a
+character for which
+.Xr isalnum 3
+is true.
+In the ASCII character set, this includes the following characters:
+.sp
+.Bl -column \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__
+.It \&041\ ``!'' \t042\ ``"'' \t043\ ``#'' \t044\ ``$'' \t045\ ``%''
+.It \&046\ ``&'' \t047\ ``''' \t050\ ``('' \t051\ ``)'' \t052\ ``*''
+.It \&053\ ``+'' \t054\ ``,'' \t055\ ``-'' \t056\ ``.'' \t057\ ``/''
+.It \&072\ ``:'' \t073\ ``;'' \t074\ ``<'' \t075\ ``='' \t076\ ``>''
+.It \&077\ ``?'' \t100\ ``@'' \t133\ ``['' \t134\ ``\'' \t135\ ``]''
+.It \&136\ ``^'' \t137\ ``_'' \t140\ ```'' \t173\ ``{'' \t174\ ``|''
+.It \&175\ ``}'' \t176\ ``~''
+.El
+.Sh RETURN VALUES
+The
+.Fn ispunct
+function returns zero if the character tests false and
+returns non-zero if the character tests true.
+.Sh SEE ALSO
+.Xr ctype 3 ,
+.Xr ascii 7
+.Sh STANDARDS
+The
+.Fn ispunct
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/locale/isspace.3 b/lib/libc/locale/isspace.3
new file mode 100644
index 0000000..fb077e4
--- /dev/null
+++ b/lib/libc/locale/isspace.3
@@ -0,0 +1,70 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)isspace.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ISSPACE 3
+.Os
+.Sh NAME
+.Nm isspace
+.Nd white-space character test
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Ft int
+.Fn isspace "int c";
+.Sh DESCRIPTION
+The
+.Fn isspace
+function tests for the standard white-space characters.
+In the ASCII character set, this includes the following characters:
+.sp
+.Bl -column \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__
+.It \&011\ ht \t012\ nl \t013\ vt \t014\ np \t015\ cr
+.It \&040\ sp
+.El
+.Sh RETURN VALUES
+The
+.Fn isspace
+function returns zero if the character tests false and
+returns non-zero if the character tests true.
+.Sh SEE ALSO
+.Xr ctype 3 ,
+.Xr ascii 7
+.Sh STANDARDS
+The
+.Fn isspace
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/locale/isupper.3 b/lib/libc/locale/isupper.3
new file mode 100644
index 0000000..6035f09
--- /dev/null
+++ b/lib/libc/locale/isupper.3
@@ -0,0 +1,74 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)isupper.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ISUPPER 3
+.Os
+.Sh NAME
+.Nm isupper
+.Nd upper-case character test
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Ft int
+.Fn isupper "int c";
+.Sh DESCRIPTION
+The
+.Fn isupper
+function tests for any upper-case letter.
+In the ASCII character set, this includes the following characters:
+.sp
+.Bl -column \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__
+.It \&101\ ``A'' \t102\ ``B'' \t103\ ``C'' \t104\ ``D'' \t105\ ``E''
+.It \&106\ ``F'' \t107\ ``G'' \t110\ ``H'' \t111\ ``I'' \t112\ ``J''
+.It \&113\ ``K'' \t114\ ``L'' \t115\ ``M'' \t116\ ``N'' \t117\ ``O''
+.It \&120\ ``P'' \t121\ ``Q'' \t122\ ``R'' \t123\ ``S'' \t124\ ``T''
+.It \&125\ ``U'' \t126\ ``V'' \t127\ ``W'' \t130\ ``X'' \t131\ ``Y''
+.It \&132\ ``Z''
+.El
+.Sh RETURN VALUES
+The
+.Fn isupper
+function returns zero if the character tests false and
+returns non-zero if the character tests true.
+.Sh SEE ALSO
+.Xr ctype 3 ,
+.Xr ascii 7
+.Sh STANDARDS
+The
+.Xr isupper
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/locale/isxdigit.3 b/lib/libc/locale/isxdigit.3
new file mode 100644
index 0000000..ec1a502
--- /dev/null
+++ b/lib/libc/locale/isxdigit.3
@@ -0,0 +1,73 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)isxdigit.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ISXDIGIT 3
+.Os
+.Sh NAME
+.Nm isxdigit
+.Nd hexadecimal-digit character test
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Ft int
+.Fn isxdigit "int c";
+.Sh DESCRIPTION
+The
+.Fn isxdigit
+function tests for any hexadecimal-digit character.
+In the ASCII character set, this includes the following characters:
+.sp
+.Bl -column \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__
+.It \&060\ ``0'' \t061\ ``1'' \t062\ ``2'' \t063\ ``3'' \t064\ ``4''
+.It \&065\ ``5'' \t066\ ``6'' \t067\ ``7'' \t070\ ``8'' \t071\ ``9''
+.It \&101\ ``A'' \t102\ ``B'' \t103\ ``C'' \t104\ ``D'' \t105\ ``E''
+.It \&106\ ``F'' \t141\ ``a'' \t142\ ``b'' \t143\ ``c'' \t144\ ``d''
+.It \&145\ ``e'' \t146\ ``f''
+.El
+.Sh RETURN VALUES
+The
+.Fn isxdigit
+function returns zero if the character tests false and
+returns non-zero if the character tests true.
+.Sh SEE ALSO
+.Xr ctype 3 ,
+.Xr ascii 7
+.Sh STANDARDS
+The
+.Fn isxdigit
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/locale/lconv.c b/lib/libc/locale/lconv.c
new file mode 100644
index 0000000..f1212b0a
--- /dev/null
+++ b/lib/libc/locale/lconv.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)lconv.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <limits.h>
+#include <locale.h>
+
+static char empty[] = "";
+
+/*
+ * Default (C) locale conversion.
+ */
+static struct lconv C_lconv = {
+	".",			/* decimal_point */
+	empty,			/* thousands_sep */
+	empty,			/* grouping */
+	empty,			/* int_curr_symbol */
+	empty,			/* currency_symbol */
+	empty,			/* mon_decimal_point */
+	empty,			/* mon_thousands_sep */
+	empty,			/* mon_grouping */
+	empty,			/* positive_sign */
+	empty,			/* negative_sign */
+	CHAR_MAX,		/* int_frac_digits */
+	CHAR_MAX,		/* frac_digits */
+	CHAR_MAX,		/* p_cs_precedes */
+	CHAR_MAX,		/* p_sep_by_space */
+	CHAR_MAX,		/* n_cs_precedes */
+	CHAR_MAX,		/* n_sep_by_space */
+	CHAR_MAX,		/* p_sign_posn */
+	CHAR_MAX,		/* n_sign_posn */
+};
+
+/*
+ * Current locale conversion.
+ */
+struct lconv *__lconv = &C_lconv;
diff --git a/lib/libc/locale/localeconv.c b/lib/libc/locale/localeconv.c
new file mode 100644
index 0000000..f3172af
--- /dev/null
+++ b/lib/libc/locale/localeconv.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)localeconv.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <locale.h>
+
+/*
+ * Return the current locale conversion.
+ */
+struct lconv *
+localeconv()
+{
+	extern struct lconv *__lconv;
+
+	return (__lconv);
+}
diff --git a/lib/libc/locale/mbrune.3 b/lib/libc/locale/mbrune.3
new file mode 100644
index 0000000..d843a02
--- /dev/null
+++ b/lib/libc/locale/mbrune.3
@@ -0,0 +1,157 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Paul Borman at Krystal Technologies.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)mbrune.3	8.2 (Berkeley) 4/19/94
+.\"
+.Dd "April 19, 1994"
+.Dt MBRUNE 3
+.Os
+.Sh NAME
+.Nm mbrune ,
+.Nm mbrrune ,
+.Nm mbmb
+.Nd multibyte rune support for C
+.Sh SYNOPSIS
+.Fd #include <rune.h>
+.Ft char *
+.Fn mbrune "const char *string" "rune_t rune"
+.Ft char *
+.Fn mbrrune "const char *string" "rune_t rune"
+.Ft char *
+.Fn mbmb "const char *string" "char *pattern"
+.Sh DESCRIPTION
+These routines provide the corresponding functionality of
+.Fn strchr ,
+.Fn strrchr
+and
+.Fn strstr
+for multibyte strings.
+.Pp
+The
+.Fn mbrune
+function locates the first occurrence of
+.Fn rune
+in the string pointed to by
+.Ar string .
+The terminating
+.Dv NULL
+character is considered part of the string.
+If
+.Fa rune
+is
+.Ql \e0 ,
+.Fn mbrune
+locates the terminating
+.Ql \e0 .
+.Pp
+The
+.Fn mbrrune
+function
+locates the last occurrence of
+.Fa rune
+in the string
+.Fa string .
+If
+.Fa rune
+is
+.Ql \e0 ,
+.Fn mbrune
+locates the terminating
+.Ql \e0 .
+.Pp
+The
+.Fn mbmb
+function locates the first occurrence of the null-terminated string
+.Fa pattern
+in the null-terminated string
+.Fa string.
+If
+.Fa pattern
+is the empty string,
+.Fn mbmb
+returns
+.Fa string ;
+if
+.Fa pattern
+occurs nowhere in
+.Fa string ,
+.Fn mbmb
+returns
+.Dv NULL ;
+otherwise
+.Fn mbmb
+returns a pointer to the first character of the first occurrence of
+.Fa pattern .
+.Sh RETURN VALUES
+The function
+.Fn mbrune
+returns a pointer to the located character, or
+.Dv NULL
+if the character does not appear in the string.
+.Pp
+The
+.Fn mbrrune
+function
+returns a pointer to the character, or
+.Dv NULL
+if the character does not appear in the string.
+.Pp
+The
+.Fn mbmb
+function
+returns a pointer to the 
+.Fa pattern ,
+or
+.Dv NULL
+if the 
+.Fa pattern
+does not appear in the string.
+.Sh "SEE ALSO
+.Xr euc 4 ,
+.Xr mbrune 3 ,
+.Xr rune 3 ,
+.Xr setlocale 3 ,
+.Xr utf2 4
+.Sh HISTORY
+The
+.Fn mbrune ,
+.Fn mbrrune ,
+and
+.Fn mbmb
+functions
+first appeared in Plan 9 from Bell Labs as
+.Fn utfrune ,
+.Fn utfrrune ,
+and
+.Fn utfutf .
diff --git a/lib/libc/locale/mbrune.c b/lib/libc/locale/mbrune.c
new file mode 100644
index 0000000..92efe83
--- /dev/null
+++ b/lib/libc/locale/mbrune.c
@@ -0,0 +1,112 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)mbrune.c	8.1 (Berkeley) 6/27/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <limits.h>
+#include <rune.h>
+#include <stddef.h>
+#include <string.h>
+
+char *
+mbrune(string, c)
+	const char *string;
+	rune_t c;
+{
+	char const *result;
+	rune_t r;
+
+	while ((r = sgetrune(string, MB_LEN_MAX, &result))) {
+		if (r == c)
+			return ((char *)string);
+		string = result == string ? string + 1 : result;
+	}
+
+	return (c == *string ? (char *)string : NULL);
+}
+
+char *
+mbrrune(string, c)
+	const char *string;
+	rune_t c;
+{
+	const char *last = 0;
+	char const *result;
+	rune_t  r;
+
+	while ((r = sgetrune(string, MB_LEN_MAX, &result))) {
+		if (r == c)
+			last = string;
+		string = result == string ? string + 1 : result;
+	}
+	return (c == *string ? (char *)string : (char *)last);
+}
+
+char *
+mbmb(string, pattern)
+	const char *string;
+	char *pattern;
+{
+	rune_t first, r;
+	size_t plen, slen;
+	char const *result;
+
+	plen = strlen(pattern);
+	slen = strlen(string);
+	if (plen > slen)
+		return (0);
+
+	first = sgetrune(pattern, plen, &result);
+	if (result == string)
+		return (0);
+
+	while (slen >= plen && (r = sgetrune(string, slen, &result))) {
+		if (r == first) {
+			if (strncmp(string, pattern, slen) == 0)
+				return ((char *) string);
+		}
+		if (result == string) {
+			--slen;
+			++string;
+		} else {
+			slen -= result - string;
+			string = result;
+		}
+	}
+	return (0);
+}
diff --git a/lib/libc/locale/multibyte.3 b/lib/libc/locale/multibyte.3
new file mode 100644
index 0000000..3ea10e5
--- /dev/null
+++ b/lib/libc/locale/multibyte.3
@@ -0,0 +1,241 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Donn Seeley of BSDI.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)multibyte.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd "June 4, 1993"
+.Dt MULTIBYTE 3
+.Os
+.Sh NAME
+.Nm mblen ,
+.Nm mbstowcs ,
+.Nm mbtowc ,
+.Nm wcstombs ,
+.Nm wctomb
+.Nd multibyte character support for C
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft int
+.Fn mblen "const char *mbchar" "int nbytes"
+.Ft size_t
+.Fn mbstowcs "wchar_t *wcstring" "const char *mbstring" "size_t nwchars"
+.Ft int
+.Fn mbtowc "wchar_t *wcharp" "const char *mbchar" "size_t nbytes"
+.Ft size_t
+.Fn wcstombs "char *mbstring" "const wchar_t *wcstring" "size_t nbytes"
+.Ft int
+.Fn wctomb "char *mbchar" "wchar_t wchar"
+.Sh DESCRIPTION
+The basic elements of some written natural languages such as Chinese
+cannot be represented uniquely with single C
+.Va char Ns s .
+The C standard supports two different ways of dealing with
+extended natural language encodings,
+.Em wide
+characters and
+.Em multibyte
+characters.
+Wide characters are an internal representation
+which allows each basic element to map
+to a single object of type
+.Va wchar_t .
+Multibyte characters are used for input and output
+and code each basic element as a sequence of C
+.Va char Ns s .
+Individual basic elements may map into one or more
+.Pq up to Dv MB_CHAR_MAX
+bytes in a multibyte character.
+.Pp
+The current locale
+.Pq Xr setlocale 3
+governs the interpretation of wide and multibyte characters.
+The locale category
+.Dv LC_CTYPE
+specifically controls this interpretation.
+The
+.Va wchar_t
+type is wide enough to hold the largest value
+in the wide character representations for all locales.
+.Pp
+Multibyte strings may contain
+.Sq shift
+indicators to switch to and from
+particular modes within the given representation.
+If explicit bytes are used to signal shifting,
+these are not recognized as separate characters
+but are lumped with a neighboring character.
+There is always a distinguished
+.Sq initial
+shift state.
+The
+.Fn mbstowcs
+and
+.Fn wcstombs
+functions assume that multibyte strings are interpreted
+starting from the initial shift state.
+The
+.Fn mblen ,
+.Fn mbtowc
+and
+.Fn wctomb
+functions maintain static shift state internally.
+A call with a null
+.Fa mbchar
+pointer returns nonzero if the current locale requires shift states,
+zero otherwise;
+if shift states are required, the shift state is reset to the initial state.
+The internal shift states are undefined after a call to
+.Fn setlocale
+with the
+.Dv LC_CTYPE
+or
+.Dv LC_ALL
+categories.
+.Pp
+For convenience in processing,
+the wide character with value 0
+.Pq the null wide character
+is recognized as the wide character string terminator,
+and the character with value 0
+.Pq the null byte
+is recognized as the multibyte character string terminator.
+Null bytes are not permitted within multibyte characters.
+.Pp
+The
+.Fn mblen
+function computes the length in bytes
+of a multibyte character
+.Fa mbchar .
+Up to
+.Fa nbytes
+bytes are examined.
+.Pp
+The
+.Fn mbtowc
+function converts a multibyte character
+.Fa mbchar
+into a wide character and stores the result
+in the object pointed to by
+.Fa wcharp.
+Up to
+.Fa nbytes
+bytes are examined.
+.Pp
+The
+.Fn wctomb
+function converts a wide character
+.Fa wchar
+into a multibyte character and stores
+the result in
+.Fa mbchar .
+The object pointed to by
+.Fa mbchar
+must be large enough to accommodate the multibyte character.  
+.Pp
+The
+.Fn mbstowcs
+function converts a multibyte character string
+.Fa mbstring
+into a wide character string
+.Fa wcstring .
+No more than
+.Fa nwchars
+wide characters are stored.
+A terminating null wide character is appended if there is room.
+.Pp
+The
+.Fn wcstombs
+function converts a wide character string
+.Fa wcstring
+into a multibyte character string
+.Fa mbstring .
+Up to
+.Fa nbytes
+bytes are stored in
+.Fa mbstring .
+Partial multibyte characters at the end of the string are not stored.
+The multibyte character string is null terminated if there is room.
+.Sh "RETURN VALUES
+If multibyte characters are not supported in the current locale,
+all of these functions will return \-1 if characters can be processed,
+otherwise 0.
+.Pp
+If
+.Fa mbchar
+is
+.Dv NULL ,
+the
+.Fn mblen ,
+.Fn mbtowc
+and
+.Fn wctomb
+functions return nonzero if shift states are supported,
+zero otherwise.
+If
+.Fa mbchar
+is valid,
+then these functions return
+the number of bytes processed in
+.Fa mbchar ,
+or \-1 if no multibyte character
+could be recognized or converted.
+.Pp
+The
+.Fn mbstowcs
+function returns the number of wide characters converted,
+not counting any terminating null wide character.
+The
+.Fn wcstombs
+function returns the number of bytes converted,
+not counting any terminating null byte.
+If any invalid multibyte characters are encountered,
+both functions return \-1.
+.Sh "SEE ALSO
+.Xr euc 4 ,
+.Xr mbrune 3 ,
+.Xr rune 3 ,
+.Xr setlocale 3 ,
+.Xr utf2 4
+.Sh STANDARDS
+The
+.Fn mblen ,
+.Fn mbstowcs ,
+.Fn mbtowc ,
+.Fn wcstombs
+and
+.Fn wctomb
+functions conform to
+.St -ansiC .
+.Sh BUGS
+The current implementation does not support shift states.
diff --git a/lib/libc/locale/nomacros.c b/lib/libc/locale/nomacros.c
new file mode 100644
index 0000000..45c0db7
--- /dev/null
+++ b/lib/libc/locale/nomacros.c
@@ -0,0 +1,9 @@
+/*
+ * Tell <ctype.h> to generate extern versions of all its inline
+ * functions.  The extern versions get called if the system doesn't
+ * support inlines or the user defines _DONT_USE_CTYPE_INLINE_
+ * before including <ctype.h>.
+ */
+#define _EXTERNALIZE_CTYPE_INLINES_
+
+#include <ctype.h>
diff --git a/lib/libc/locale/none.c b/lib/libc/locale/none.c
new file mode 100644
index 0000000..41f70ae
--- /dev/null
+++ b/lib/libc/locale/none.c
@@ -0,0 +1,91 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)none.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <rune.h>
+#include <errno.h>
+#include <stdlib.h>
+
+rune_t	_none_sgetrune __P((const char *, size_t, char const **));
+int	_none_sputrune __P((rune_t, char *, size_t, char **));
+
+int
+_none_init(rl)
+	_RuneLocale *rl;
+{
+	rl->sgetrune = _none_sgetrune;
+	rl->sputrune = _none_sputrune;
+	_CurrentRuneLocale = rl;
+	__mb_cur_max = 1;
+	return(0);
+}
+
+rune_t
+_none_sgetrune(string, n, result)
+	const char *string;
+	size_t n;
+	char const **result;
+{
+	if (n < 1) {
+		if (result)
+			*result = string;
+		return(_INVALID_RUNE);
+	}
+	if (result)
+		*result = string + 1;
+	return(*string & 0xff);
+}
+
+int
+_none_sputrune(c, string, n, result)
+	rune_t c;
+	char *string, **result;
+	size_t n;
+{
+	if (n >= 1) {
+		if (string)
+			*string = c;
+		if (result)
+			*result = string + 1;
+	} else if (result)
+		*result = (char *)0;
+	return(1);
+}
diff --git a/lib/libc/locale/rune.3 b/lib/libc/locale/rune.3
new file mode 100644
index 0000000..659133f
--- /dev/null
+++ b/lib/libc/locale/rune.3
@@ -0,0 +1,269 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Paul Borman at Krystal Technologies.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)rune.3	8.2 (Berkeley) 12/11/93
+.\"
+.Dd "December 11, 1993"
+.Dt RUNE 3
+.Os
+.Sh NAME
+.Nm setrunelocale ,
+.Nm setinvalidrune ,
+.Nm sgetrune ,
+.Nm sputrune
+.Nd rune support for C
+.Sh SYNOPSIS
+.Fd #include <rune.h>
+.Fd #include <errno.h>
+.Ft int
+.Fn setrunelocale "char *locale"
+.Ft void
+.Fn setinvalidrune "rune_t rune"
+.Ft rune_t
+.Fn sgetrune "const char *string" "size_t n" "char const **result"
+.Ft int
+.Fn sputrune "rune_t rune" "char *string" "size_t n" "char **result"
+.sp
+.Fd #include <stdio.h>
+.Ft long
+.Fn fgetrune "FILE *stream"
+.Ft int
+.Fn fungetrune "rune_t rune" "FILE *stream"
+.Ft int
+.Fn fputrune "rune_t rune" "FILE *stream"
+.Sh DESCRIPTION
+The
+.Fn setrunelocale
+controls the type of encoding used to represent runes as multibyte strings
+as well as the properties of the runes as defined in
+\fB<ctype.h>\fP.
+The
+.Fa locale
+argument indicates which locale to load.
+If the locale is successfully loaded,
+.Dv 0
+is returned, otherwise an errno value is returned to indicate the
+type of error.
+.Pp
+The
+.Fn setinvalidrune
+function sets the value of the global value
+.Ev _INVALID_RUNE
+to be
+.Fa rune.
+.Pp
+The
+.Fn sgetrune
+function tries to read a single multibyte character from
+.Fa string ,
+which is at most
+.Fa n
+bytes long.
+If
+.Fn sgetrune
+is successful, the rune is returned.
+If
+.Fa result
+is not
+.Dv NULL ,
+.Fa *result
+will point to the first byte which was not converted in
+.Fa string.
+If the first
+.Fa n
+bytes of
+.Fa string
+do not describe a full multibyte character,
+.Ev _INVALID_RUNE
+is returned and
+.Fa *result
+will point to
+.Fa string.
+If there is an encoding error at the start of
+.Fa string ,
+.Ev _INVALID_RUNE
+is returned and 
+.Fa *result
+will point to the second character of
+.Fa string.
+.Pp
+the
+.Fn sputrune
+function tries to encode
+.Fa rune
+as a multibyte string and store it at
+.Fa string ,
+but no more than
+.Fa n
+bytes will be stored.
+If
+.Fa result
+is not
+.Dv NULL ,
+.Fa *result
+will be set to point to the first byte in string following the new
+multibyte character.
+If
+.Fa string
+is
+.Dv NULL ,
+.Fa *result
+will point to
+.Dv "(char *)0 +"
+.Fa x ,
+where
+.Fa x
+is the number of bytes that would be needed to store the multibyte value.
+If the multibyte character would consist of more than
+.Fa n
+bytes and
+.Fa result
+is not
+.Dv NULL ,
+.Fa *result
+will be set to
+.Dv NULL.
+In all cases, 
+.Fn sputrune
+will return the number of bytes which would be needed to store
+.Fa rune
+as a multibyte character.
+.Pp
+The
+.Fn fgetrune
+function operates the same as
+.Fn sgetrune
+with the exception that it attempts to read enough bytes from 
+.Fa stream
+to decode a single rune.  It returns either
+.Ev EOF
+on end of file,
+.Ev _INVALID_RUNE
+on an encoding error, or the rune decoded if all went well.
+.Pp
+The
+.Fn fungetrune
+function pushes the multibyte encoding, as provided by
+.Fn sputrune ,
+of
+.Fa rune
+onto
+.Fa stream 
+such that the next
+.Fn fgetrune
+call will return
+.Fa rune .
+It returns
+.Ev EOF
+if it fails and
+.Dv 0
+on success.
+.Pp
+The
+.Fn fputrune
+function writes the multibyte encoding of
+.Fa rune ,
+as provided by
+.Fn sputrune ,
+onto
+.Fa stream .
+It returns
+.Ev EOF
+on failure and
+.Dv 0
+on success.
+.Sh RETURN VALUES
+The
+.Fn setrunelocale
+function returns one of the following values:
+.Bl -tag -width WWWWWWWW
+.It Dv 0
+.Fa setrunelocale was successful.
+.It Ev EFAULT
+.Fa locale
+was
+.Dv NULL .
+.It Ev ENOENT
+The locale could not be found.
+.It Ev EFTYPE
+The file found was not a valid file.
+.It Ev EINVAL
+The encoding indicated by the locale was unknown.
+.El
+.Pp
+The
+.Fn sgetrune
+function either returns the rune read or
+.Ev _INVALID_RUNE .
+The
+.Fn sputrune
+function returns the number of bytes needed to store
+.Fa rune
+as a multibyte string.
+.Sh FILES
+.Bl -tag -width /usr/share/locale/locale/LC_CTYPE -compact
+.It Pa $PATH_LOCALE/\fIlocale\fP/LC_CTYPE
+.It Pa /usr/share/locale/\fIlocale\fP/LC_CTYPE
+binary LC_CTYPE file for the locale \fIlocale\fP.
+.El
+.Sh "SEE ALSO
+.Xr euc 4 ,
+.Xr mbrune 3 ,
+.Xr setlocale 3 ,
+.Xr utf2 4
+.Sh NOTE
+The ANSI C type
+.Ev wchar_t
+is the same as
+.Ev rune_t .
+.Ev Rune_t
+was chosen to accent the purposeful choice of not basing the
+system with the ANSI C
+primitives, which were, shall we say, less aesthetic.
+.Sh HISTORY
+These functions first appeared in
+.Bx 4.4 .
+.Pp
+The
+.Fn setrunelocale
+function and the other non-ANSI rune functions were inspired by
+.Nm Plan 9 from Bell Labs
+as a much more sane alternative to the ANSI multibyte and
+wide character support.
+.\"They were conceived at the San Diego 1993 Summer USENIX conference by
+.\"Paul Borman of Krystal Technologies, Keith Bostic of CSRG and Andrew Hume
+.\"of Bell Labs.
+.Pp
+All of the ANSI multibyte and wide character
+support functions are built using the rune functions.
diff --git a/lib/libc/locale/rune.c b/lib/libc/locale/rune.c
new file mode 100644
index 0000000..bc4d07c
--- /dev/null
+++ b/lib/libc/locale/rune.c
@@ -0,0 +1,173 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rune.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <rune.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+_RuneLocale *
+_Read_RuneMagi(fp)
+	FILE *fp;
+{
+	char *data;
+	void *lastp;
+	_RuneLocale *rl;
+	_RuneEntry *rr;
+	struct stat sb;
+	int x;
+
+	if (fstat(fileno(fp), &sb) < 0)
+		return(0);
+
+	if (sb.st_size < sizeof(_RuneLocale))
+		return(0);
+
+	if ((data = malloc(sb.st_size)) == NULL)
+		return(0);
+
+	rewind(fp); /* Someone might have read the magic number once already */
+
+	if (fread(data, sb.st_size, 1, fp) != 1) {
+		free(data);
+		return(0);
+	}
+
+	rl = (_RuneLocale *)data;
+	lastp = data + sb.st_size;
+
+	rl->variable = rl + 1;
+
+	if (memcmp(rl->magic, _RUNE_MAGIC_1, sizeof(rl->magic))) {
+		free(data);
+		return(0);
+	}
+
+	rl->invalid_rune = ntohl(rl->invalid_rune);
+	rl->variable_len = ntohl(rl->variable_len);
+	rl->runetype_ext.nranges = ntohl(rl->runetype_ext.nranges);
+	rl->maplower_ext.nranges = ntohl(rl->maplower_ext.nranges);
+	rl->mapupper_ext.nranges = ntohl(rl->mapupper_ext.nranges);
+
+	for (x = 0; x < _CACHED_RUNES; ++x) {
+		rl->runetype[x] = ntohl(rl->runetype[x]);
+		rl->maplower[x] = ntohl(rl->maplower[x]);
+		rl->mapupper[x] = ntohl(rl->mapupper[x]);
+	}
+
+	rl->runetype_ext.ranges = (_RuneEntry *)rl->variable;
+	rl->variable = rl->runetype_ext.ranges + rl->runetype_ext.nranges;
+	if (rl->variable > lastp) {
+		free(data);
+		return(0);
+	}
+
+	rl->maplower_ext.ranges = (_RuneEntry *)rl->variable;
+	rl->variable = rl->maplower_ext.ranges + rl->maplower_ext.nranges;
+	if (rl->variable > lastp) {
+		free(data);
+		return(0);
+	}
+
+	rl->mapupper_ext.ranges = (_RuneEntry *)rl->variable;
+	rl->variable = rl->mapupper_ext.ranges + rl->mapupper_ext.nranges;
+	if (rl->variable > lastp) {
+		free(data);
+		return(0);
+	}
+
+	for (x = 0; x < rl->runetype_ext.nranges; ++x) {
+		rr = rl->runetype_ext.ranges;
+
+		rr[x].min = ntohl(rr[x].min);
+		rr[x].max = ntohl(rr[x].max);
+		if ((rr[x].map = ntohl(rr[x].map)) == 0) {
+			int len = rr[x].max - rr[x].min + 1;
+			rr[x].types = rl->variable;
+			rl->variable = rr[x].types + len;
+			if (rl->variable > lastp) {
+				free(data);
+				return(0);
+			}
+			while (len-- > 0)
+				rr[x].types[len] = ntohl(rr[x].types[len]);
+		} else
+			rr[x].types = 0;
+	}
+
+	for (x = 0; x < rl->maplower_ext.nranges; ++x) {
+		rr = rl->maplower_ext.ranges;
+
+		rr[x].min = ntohl(rr[x].min);
+		rr[x].max = ntohl(rr[x].max);
+		rr[x].map = ntohl(rr[x].map);
+	}
+
+	for (x = 0; x < rl->mapupper_ext.nranges; ++x) {
+		rr = rl->mapupper_ext.ranges;
+
+		rr[x].min = ntohl(rr[x].min);
+		rr[x].max = ntohl(rr[x].max);
+		rr[x].map = ntohl(rr[x].map);
+	}
+	if (((char *)rl->variable) + rl->variable_len > (char *)lastp) {
+		free(data);
+		return(0);
+	}
+
+	/*
+	 * Go out and zero pointers that should be zero.
+	 */
+	if (!rl->variable_len)
+		rl->variable = 0;
+
+	if (!rl->runetype_ext.nranges)
+		rl->runetype_ext.ranges = 0;
+
+	if (!rl->maplower_ext.nranges)
+		rl->maplower_ext.ranges = 0;
+
+	if (!rl->mapupper_ext.nranges)
+		rl->mapupper_ext.ranges = 0;
+
+	return(rl);
+}
diff --git a/lib/libc/locale/runetype.c b/lib/libc/locale/runetype.c
new file mode 100644
index 0000000..ba128c6
--- /dev/null
+++ b/lib/libc/locale/runetype.c
@@ -0,0 +1,73 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <rune.h>
+
+unsigned long
+___runetype(c)
+	_BSD_RUNE_T_ c;
+{
+#ifdef XPG4
+	int x;
+	_RuneRange *rr = &_CurrentRuneLocale->runetype_ext;
+	_RuneEntry *re = rr->ranges;
+#endif
+
+	if (c == EOF)
+		return(0);
+	if (c < 0) {
+		if (c >= -128) /* signed char */
+			return(_CurrentRuneLocale->runetype[(unsigned char)c]);
+		else
+			return(0);
+	}
+
+#ifdef XPG4
+	for (x = 0; x < rr->nranges; ++x, ++re) {
+		if (c < re->min)
+			return(0L);
+		if (c <= re->max) {
+			if (re->types)
+			    return(re->types[c - re->min]);
+			else
+			    return(re->map);
+		}
+	}
+#endif
+	return(0L);
+}
+
diff --git a/lib/libc/locale/setinvalidrune.c b/lib/libc/locale/setinvalidrune.c
new file mode 100644
index 0000000..45a2a47
--- /dev/null
+++ b/lib/libc/locale/setinvalidrune.c
@@ -0,0 +1,44 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <rune.h>
+
+void
+setinvalidrune(ir)
+	rune_t ir;
+{
+	_INVALID_RUNE = ir;
+}
diff --git a/lib/libc/locale/setlocale.3 b/lib/libc/locale/setlocale.3
new file mode 100644
index 0000000..f6b75b6
--- /dev/null
+++ b/lib/libc/locale/setlocale.3
@@ -0,0 +1,324 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Donn Seeley at BSDI.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)setlocale.3	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt SETLOCALE 3
+.Os
+.Sh NAME
+.Nm setlocale ,
+.Nm localeconv
+.Nd natural language formatting for C
+.Sh SYNOPSIS
+.Fd #include <locale.h>
+.Ft char *
+.Fn setlocale "int category" "const char *locale"
+.Ft struct lconv *
+.Fn localeconv "void"
+.Sh DESCRIPTION
+The
+.Fn setlocale
+function sets the C library's notion
+of natural language formatting style
+for particular sets of routines.
+Each such style is called a
+.Sq locale
+and is invoked using an appropriate name passed as a C string.
+The
+.Fn localeconv
+routine returns the current locale's parameters
+for formatting numbers.
+.Pp
+The
+.Fn setlocale
+function recognizes several categories of routines.
+These are the categories and the sets of routines they select:
+.Pp
+.Bl -tag -width LC_MONETARY
+.It Dv LC_ALL
+Set the entire locale generically.
+.It Dv LC_COLLATE
+Set a locale for string collation routines.
+This controls alphabetic ordering in
+.Fn strcoll
+and
+.Fn strxfrm .
+.It Dv LC_CTYPE
+Set a locale for the
+.Xr ctype 3 ,
+.Xr mbrune 3 ,
+.Xr multibyte 3
+and
+.Xr rune 3
+functions.
+This controls recognition of upper and lower case,
+alphabetic or non-alphabetic characters,
+and so on.  The real work is done by the
+.Fn setrunelocale
+function.
+.It Dv LC_MONETARY
+Set a locale for formatting monetary values;
+this affects the
+.Fn localeconv
+function.
+.It Dv LC_NUMERIC
+Set a locale for formatting numbers.
+This controls the formatting of decimal points
+in input and output of floating point numbers
+in functions such as
+.Fn printf
+and
+.Fn scanf ,
+as well as values returned by
+.Fn localeconv .
+.It Dv LC_TIME
+Set a locale for formatting dates and times using the
+.Fn strftime
+function.
+.El
+.Pp
+Only three locales are defined by default,
+the empty string
+.Li "\&""\|""
+which denotes the native environment, and the
+.Li "\&""C""
+and
+.LI "\&""POSIX""
+locales, which denote the C language environment.
+A
+.Fa locale
+argument of
+.Dv NULL
+causes
+.Fn setlocale
+to return the current locale.
+By default, C programs start in the
+.Li "\&""C""
+locale.
+The only function in the library that sets the locale is
+.Fn setlocale ;
+the locale is never changed as a side effect of some other routine.
+.Pp
+The
+.Fn localeconv
+function returns a pointer to a structure
+which provides parameters for formatting numbers,
+especially currency values:
+.Bd -literal -offset indent
+struct lconv {
+	char	*decimal_point;
+	char	*thousands_sep;
+	char	*grouping;
+	char	*int_curr_symbol;
+	char	*currency_symbol;
+	char	*mon_decimal_point;
+	char	*mon_thousands_sep;
+	char	*mon_grouping;
+	char	*positive_sign;
+	char	*negative_sign;
+	char	int_frac_digits;
+	char	frac_digits;
+	char	p_cs_precedes;
+	char	p_sep_by_space;
+	char	n_cs_precedes;
+	char	n_sep_by_space;
+	char	p_sign_posn;
+	char	n_sign_posn;
+};
+.Ed
+.Pp
+The individual fields have the following meanings:
+.Pp
+.Bl -tag -width mon_decimal_point
+.It Fa decimal_point
+The decimal point character, except for currency values.
+.It Fa thousands_sep
+The separator between groups of digits
+before the decimal point, except for currency values.
+.It Fa grouping
+The sizes of the groups of digits, except for currency values.
+This is a pointer to a vector of integers, each of size
+.Va char ,
+representing group size from low order digit groups
+to high order (right to left).
+The list may be terminated with 0 or
+.Dv CHAR_MAX .
+If the list is terminated with 0,
+the last group size before the 0 is repeated to account for all the digits.
+If the list is terminated with
+.Dv CHAR_MAX ,
+no more grouping is performed.
+.It Fa int_curr_symbol
+The standardized international currency symbol.
+.It Fa currency_symbol
+The local currency symbol.
+.It Fa mon_decimal_point
+The decimal point character for currency values.
+.It Fa mon_thousands_sep
+The separator for digit groups in currency values.
+.It Fa mon_grouping
+Like
+.Fa grouping
+but for currency values.
+.It Fa positive_sign
+The character used to denote nonnegative currency values,
+usually the empty string.
+.It Fa negative_sign
+The character used to denote negative currency values,
+usually a minus sign.
+.It Fa int_frac_digits
+The number of digits after the decimal point
+in an international-style currency value.
+.It Fa frac_digits
+The number of digits after the decimal point
+in the local style for currency values.
+.It Fa p_cs_precedes
+1 if the currency symbol precedes the currency value
+for nonnegative values, 0 if it follows.
+.It Fa p_sep_by_space
+1 if a space is inserted between the currency symbol
+and the currency value for nonnegative values, 0 otherwise.
+.It Fa n_cs_precedes
+Like
+.Fa p_cs_precedes
+but for negative values.
+.It Fa n_sep_by_space
+Like
+.Fa p_sep_by_space
+but for negative values.
+.It Fa p_sign_posn
+The location of the
+.Fa positive_sign
+with respect to a nonnegative quantity and the
+.Fa currency_symbol ,
+coded as follows:
+.Bl -tag -width 3n -compact
+.It Li 0
+Parentheses around the entire string.
+.It Li 1
+Before the string.
+.It Li 2
+After the string.
+.It Li 3
+Just before
+.Fa currency_symbol .
+.It Li 4
+Just after
+.Fa currency_symbol .
+.El
+.It Fa n_sign_posn
+Like
+.Fa p_sign_posn
+but for negative currency values.
+.El
+.Pp
+Unless mentioned above,
+an empty string as a value for a field
+indicates a zero length result or
+a value that is not in the current locale.
+A
+.Dv CHAR_MAX
+result similarly denotes an unavailable value.
+.Sh "RETURN VALUES
+The
+.Fn setlocale
+function returns
+.Dv NULL
+and fails to change the locale
+if the given combination of
+.Fa category
+and
+.Fa locale
+makes no sense.
+The
+.Fn localeconv
+function returns a pointer to a static object
+which may be altered by later calls to
+.Fn setlocale
+or
+.Fn localeconv .
+.Sh FILES
+.Bl -tag -width /usr/share/locale/locale/category -compact
+.It Pa $PATH_LOCALE/\fIlocale\fP/\fIcategory\fP
+.It Pa /usr/share/locale/\fIlocale\fP/\fIcategory\fP
+locale file for the locale \fIlocale\fP
+and the category \fIcategory\fP.
+.El
+.Sh "SEE ALSO
+.Xr euc 4 ,
+.Xr mbrune 3 ,
+.Xr multibyte 3 ,
+.Xr rune 3 ,
+.Xr strcoll 3 ,
+.Xr strxfrm 3 ,
+.Xr utf2 4
+.Sh STANDARDS
+The
+.Fn setlocale
+and
+.Fn localeconv
+functions conform to
+.St -ansiC .
+.Sh HISTORY
+The
+.Fn setlocale
+and
+.Fn localeconv
+functions first appeared in 4.4BSD.
+.Sh BUGS
+The current implementation supports only the
+.Li "\&""C""
+and
+.Li "\&""POSIX""
+locales for all but the 
+.Dv LC_COLLATE ,
+.Dv LC_CTYPE ,
+and
+.Dv LC_TIME
+categories.
+.Pp
+In spite of the gnarly currency support in
+.Fn localeconv ,
+the standards don't include any functions
+for generalized currency formatting.
+.Pp
+Use of
+.Dv LC_MONETARY
+could lead to misleading results until we have a real time currency
+conversion function.
+.Dv LC_NUMERIC
+and
+.Dv LC_TIME
+are personal choices and should not be wrapped up with the other categories.
diff --git a/lib/libc/locale/setlocale.c b/lib/libc/locale/setlocale.c
new file mode 100644
index 0000000..11f2139
--- /dev/null
+++ b/lib/libc/locale/setlocale.c
@@ -0,0 +1,284 @@
+/*
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)setlocale.c	8.1 (Berkeley) 7/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <limits.h>
+#include <locale.h>
+#include <rune.h>
+#include <stdlib.h>
+#include <string.h>
+#include "collate.h"
+
+/*
+ * Category names for getenv()
+ */
+static char *categories[_LC_LAST] = {
+    "LC_ALL",
+    "LC_COLLATE",
+    "LC_CTYPE",
+    "LC_MONETARY",
+    "LC_NUMERIC",
+    "LC_TIME",
+};
+
+/*
+ * Current locales for each category
+ */
+static char current_categories[_LC_LAST][32] = {
+    "C",
+    "C",
+    "C",
+    "C",
+    "C",
+    "C",
+};
+
+/*
+ * The locales we are going to try and load
+ */
+static char new_categories[_LC_LAST][32];
+
+static char current_locale_string[_LC_LAST * 33];
+char *_PathLocale;
+
+static char	*currentlocale __P((void));
+static char	*loadlocale __P((int));
+
+extern int __time_load_locale __P((const char *)); /* strftime.c */
+
+#ifdef XPG4
+extern int _xpg4_setrunelocale __P((char *));
+#endif
+
+char *
+setlocale(category, locale)
+	int category;
+	const char *locale;
+{
+	int found, i, len;
+	char *env, *r;
+
+	if (!_PathLocale && !(_PathLocale = getenv("PATH_LOCALE")))
+		_PathLocale = _PATH_LOCALE;
+
+	if (category < 0 || category >= _LC_LAST)
+		return (NULL);
+
+	if (!locale)
+		return (category ?
+		    current_categories[category] : currentlocale());
+
+	/*
+	 * Default to the current locale for everything.
+	 */
+	for (i = 1; i < _LC_LAST; ++i)
+		(void)strcpy(new_categories[i], current_categories[i]);
+
+	/*
+	 * Now go fill up new_categories from the locale argument
+	 */
+	if (!*locale) {
+		env = getenv(categories[category]);
+
+		if (!env)
+			env = getenv(categories[0]);
+
+		if (!env)
+			env = getenv("LANG");
+
+		if (!env)
+			env = "C";
+
+		(void) strncpy(new_categories[category], env, 31);
+		new_categories[category][31] = 0;
+		if (!category) {
+			for (i = 1; i < _LC_LAST; ++i) {
+				if (!(env = getenv(categories[i])))
+					env = new_categories[0];
+				(void)strncpy(new_categories[i], env, 31);
+				new_categories[i][31] = 0;
+			}
+		}
+	} else if (category)  {
+		(void)strncpy(new_categories[category], locale, 31);
+		new_categories[category][31] = 0;
+	} else {
+		if ((r = strchr(locale, '/')) == 0) {
+			for (i = 1; i < _LC_LAST; ++i) {
+				(void)strncpy(new_categories[i], locale, 31);
+				new_categories[i][31] = 0;
+			}
+		} else {
+			for (i = 1; r[1] == '/'; ++r);
+			if (!r[1])
+				return (NULL);	/* Hmm, just slashes... */
+			do {
+				len = r - locale > 31 ? 31 : r - locale;
+				(void)strncpy(new_categories[i++], locale, len);
+				new_categories[i++][len] = 0;
+				locale = r;
+				while (*locale == '/')
+				    ++locale;
+				while (*++r && *r != '/');
+			} while (*locale);
+			while (i < _LC_LAST)
+				(void)strcpy(new_categories[i],
+				    new_categories[i-1]);
+		}
+	}
+
+	if (category)
+		return (loadlocale(category));
+
+	found = 0;
+	for (i = 1; i < _LC_LAST; ++i)
+		if (loadlocale(i) != NULL)
+			found = 1;
+	if (found)
+	    return (currentlocale());
+	return (NULL);
+}
+
+/* To be compatible with crt0 hack */
+void
+_startup_setlocale(category, locale)
+	int category;
+	const char *locale;
+{
+#ifndef XPG4
+	(void) setlocale(category, locale);
+#endif
+}
+
+static char *
+currentlocale()
+{
+	int i, len;
+
+	(void)strcpy(current_locale_string, current_categories[1]);
+
+	for (i = 2; i < _LC_LAST; ++i)
+		if (strcmp(current_categories[1], current_categories[i])) {
+			len = strlen(current_categories[1]) + 1 +
+			      strlen(current_categories[2]) + 1 +
+			      strlen(current_categories[3]) + 1 +
+			      strlen(current_categories[4]) + 1 +
+			      strlen(current_categories[5]) + 1;
+			if (len > sizeof(current_locale_string))
+				return NULL;
+			(void) strcpy(current_locale_string, current_categories[1]);
+			(void) strcat(current_locale_string, "/");
+			(void) strcat(current_locale_string, current_categories[2]);
+			(void) strcat(current_locale_string, "/");
+			(void) strcat(current_locale_string, current_categories[3]);
+			(void) strcat(current_locale_string, "/");
+			(void) strcat(current_locale_string, current_categories[4]);
+			(void) strcat(current_locale_string, "/");
+			(void) strcat(current_locale_string, current_categories[5]);
+			break;
+		}
+	return (current_locale_string);
+}
+
+static char *
+loadlocale(category)
+	int category;
+{
+#if 0
+	char name[PATH_MAX];
+#endif
+	if (strcmp(new_categories[category],
+	    current_categories[category]) == 0)
+		return (current_categories[category]);
+
+	if (category == LC_CTYPE) {
+#ifdef XPG4
+		if (_xpg4_setrunelocale(new_categories[LC_CTYPE]))
+#else
+		if (setrunelocale(new_categories[LC_CTYPE]))
+#endif
+			return (NULL);
+		(void)strcpy(current_categories[LC_CTYPE],
+		    new_categories[LC_CTYPE]);
+		return (current_categories[LC_CTYPE]);
+	}
+
+	if (category == LC_COLLATE) {
+		if (__collate_load_tables(new_categories[LC_COLLATE]) < 0)
+			return (NULL);
+		(void)strcpy(current_categories[LC_COLLATE],
+		    new_categories[LC_COLLATE]);
+		return (current_categories[LC_COLLATE]);
+	}
+
+	if (category == LC_TIME) {
+		if (__time_load_locale(new_categories[LC_TIME]) < 0)
+			return (NULL);
+		(void)strcpy(current_categories[LC_TIME],
+		       new_categories[LC_TIME]);
+		return (current_categories[LC_TIME]);
+	}
+
+	if (!strcmp(new_categories[category], "C") ||
+		!strcmp(new_categories[category], "POSIX")) {
+
+		/*
+		 * Some day this will need to reset the locale to the default
+		 * C locale.  Since we have no way to change them as of yet,
+		 * there is no need to reset them.
+		 */
+		(void)strcpy(current_categories[category],
+		    new_categories[category]);
+		return (current_categories[category]);
+	}
+#if 0
+	/*
+	 * Some day we will actually look at this file.
+	 */
+	(void)snprintf(name, sizeof(name), "%s/%s/%s",
+	    _PathLocale, new_categories[category], categories[category]);
+#endif
+	switch (category) {
+		case LC_MONETARY:
+		case LC_NUMERIC:
+			return (NULL);
+	}
+	/* Just in case...*/
+	return (NULL);
+}
diff --git a/lib/libc/locale/setrunelocale.c b/lib/libc/locale/setrunelocale.c
new file mode 100644
index 0000000..4889667
--- /dev/null
+++ b/lib/libc/locale/setrunelocale.c
@@ -0,0 +1,119 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <rune.h>
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+char *_PathLocale;
+
+extern int		_none_init __P((_RuneLocale *));
+#ifdef XPG4
+extern int		_UTF2_init __P((_RuneLocale *));
+extern int		_EUC_init __P((_RuneLocale *));
+extern int              _xpg4_setrunelocale __P((char *));
+#endif
+extern _RuneLocale      *_Read_RuneMagi __P((FILE *));
+
+#ifdef XPG4
+int
+setrunelocale(encoding)
+	char *encoding;
+{
+	return _xpg4_setrunelocale(encoding);
+}
+#endif
+
+int
+#ifndef XPG4
+setrunelocale(encoding)
+#else
+_xpg4_setrunelocale(encoding)
+#endif
+	char *encoding;
+{
+	FILE *fp;
+	char name[PATH_MAX];
+	_RuneLocale *rl;
+
+	if (!encoding)
+	    return(EFAULT);
+
+	/*
+	 * The "C" and "POSIX" locale are always here.
+	 */
+	if (!*encoding || !strcmp(encoding, "C") || !strcmp(encoding, "POSIX")) {
+		_CurrentRuneLocale = &_DefaultRuneLocale;
+		return(0);
+	}
+
+	if (!_PathLocale && !(_PathLocale = getenv("PATH_LOCALE")))
+		_PathLocale = _PATH_LOCALE;
+
+	(void) strcpy(name, _PathLocale);
+	(void) strcat(name, "/");
+	(void) strcat(name, encoding);
+	(void) strcat(name, "/LC_CTYPE");
+
+	if ((fp = fopen(name, "r")) == NULL)
+		return(ENOENT);
+
+	if ((rl = _Read_RuneMagi(fp)) == 0) {
+		fclose(fp);
+		return(EFTYPE);
+	}
+	fclose(fp);
+
+#ifdef XPG4
+	if (!rl->encoding[0] || !strcmp(rl->encoding, "UTF2")) {
+		return(_UTF2_init(rl));
+#else
+	if (!rl->encoding[0]) {
+		return(EINVAL);
+#endif
+	} else if (!strcmp(rl->encoding, "NONE")) {
+		return(_none_init(rl));
+#ifdef XPG4
+	} else if (!strcmp(rl->encoding, "EUC")) {
+		return(_EUC_init(rl));
+#endif
+	} else
+		return(EINVAL);
+}
+
diff --git a/lib/libc/locale/table.c b/lib/libc/locale/table.c
new file mode 100644
index 0000000..e9de306
--- /dev/null
+++ b/lib/libc/locale/table.c
@@ -0,0 +1,192 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)table.c	8.1 (Berkeley) 6/27/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <rune.h>
+
+extern rune_t	_none_sgetrune __P((const char *, size_t, char const **));
+extern int	_none_sputrune __P((rune_t, char *, size_t, char **));
+extern int	_none_init __P((char *, char **));
+
+_RuneLocale _DefaultRuneLocale = {
+    _RUNE_MAGIC_1,
+    "none",
+    _none_sgetrune,
+    _none_sputrune,
+    0xFFFD,
+
+    {	/*00*/	_C,		_C,		_C,		_C,
+		_C,		_C,		_C,		_C,
+	/*08*/	_C,		_C|_S|_B,	_C|_S,		_C|_S,
+		_C|_S,		_C|_S,		_C,		_C,
+	/*10*/	_C,		_C,		_C,		_C,
+		_C,		_C,		_C,		_C,
+	/*18*/	_C,		_C,		_C,		_C,
+		_C,		_C,		_C,		_C,
+	/*20*/	_S|_B|_R,	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,
+		_P|_R|_G,	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,
+	/*28*/	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,
+		_P|_R|_G,	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,
+	/*30*/	_D|_R|_G|_X|0,	_D|_R|_G|_X|1,	_D|_R|_G|_X|2,	_D|_R|_G|_X|3,
+		_D|_R|_G|_X|4,	_D|_R|_G|_X|5,	_D|_R|_G|_X|6,	_D|_R|_G|_X|7,
+	/*38*/	_D|_R|_G|_X|8,	_D|_R|_G|_X|9,	_P|_R|_G,	_P|_R|_G,
+		_P|_R|_G,	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,
+	/*40*/	_P|_R|_G, _U|_X|_R|_G|_A|10, _U|_X|_R|_G|_A|11, _U|_X|_R|_G|_A|12,
+		_U|_X|_R|_G|_A|13, _U|_X|_R|_G|_A|14, _U|_X|_R|_G|_A|15, _U|_R|_G|_A,
+	/*48*/	_U|_R|_G|_A,	_U|_R|_G|_A,	_U|_R|_G|_A,	_U|_R|_G|_A,
+		_U|_R|_G|_A,	_U|_R|_G|_A,	_U|_R|_G|_A,	_U|_R|_G|_A,
+	/*50*/	_U|_R|_G|_A,	_U|_R|_G|_A,	_U|_R|_G|_A,	_U|_R|_G|_A,
+		_U|_R|_G|_A,	_U|_R|_G|_A,	_U|_R|_G|_A,	_U|_R|_G|_A,
+	/*58*/	_U|_R|_G|_A,	_U|_R|_G|_A,	_U|_R|_G|_A,	_P|_R|_G,
+		_P|_R|_G,	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,
+	/*60*/	_P|_R|_G, _L|_X|_R|_G|_A|10, _L|_X|_R|_G|_A|11, _L|_X|_R|_G|_A|12,
+		_L|_X|_R|_G|_A|13, _L|_X|_R|_G|_A|14, _L|_X|_R|_G|_A|15, _L|_R|_G|_A,
+	/*68*/	_L|_R|_G|_A,	_L|_R|_G|_A,	_L|_R|_G|_A,	_L|_R|_G|_A,
+		_L|_R|_G|_A,	_L|_R|_G|_A,	_L|_R|_G|_A,	_L|_R|_G|_A,
+	/*70*/	_L|_R|_G|_A,	_L|_R|_G|_A,	_L|_R|_G|_A,	_L|_R|_G|_A,
+		_L|_R|_G|_A,	_L|_R|_G|_A,	_L|_R|_G|_A,	_L|_R|_G|_A,
+	/*78*/	_L|_R|_G|_A,	_L|_R|_G|_A,	_L|_R|_G|_A,	_P|_R|_G,
+		_P|_R|_G,	_P|_R|_G,	_P|_R|_G,	_C,
+	/*80*/	_C,		_C,		_C,		_C,
+		_C,		_C,		_C,		_C,
+	/*88*/	_C,		_C,		_C,		_C,
+		_C,		_C,		_C,		_C,
+	/*90*/	_C,		_C,		_C,		_C,
+		_C,		_C,		_C,		_C,
+	/*98*/	_C,		_C,		_C,		_C,
+		_C,		_C,		_C,		_C,
+	/*A0*/	_R|_G,		_P|_R|_G,	_P|_R|_G,	_P|_R|_G,
+		_P|_R|_G,	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,
+	/*A8*/	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,
+		_P|_R|_G,	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,
+	/*B0*/	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,
+		_P|_R|_G,	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,
+	/*B8*/	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,
+		_P|_R|_G,	_P|_R|_G,	_P|_R|_G,	_P|_R|_G,
+	/*C0*/	_R|_G,		_R|_G,		_R|_G,		_R|_G,
+		_R|_G,		_R|_G,		_R|_G,		_R|_G,
+	/*C8*/	_R|_G,		_R|_G,		_R|_G,		_R|_G,
+		_R|_G,		_R|_G,		_R|_G,		_R|_G,
+	/*D0*/	_R|_G,		_R|_G,		_R|_G,		_R|_G,
+		_R|_G,		_R|_G,		_R|_G,		_P|_R|_G,
+	/*D8*/	_R|_G,		_R|_G,		_R|_G,		_R|_G,
+		_R|_G,		_R|_G,		_R|_G,		_R|_G,
+	/*E0*/	_R|_G,		_R|_G,		_R|_G,		_R|_G,
+		_R|_G,		_R|_G,		_R|_G,		_R|_G,
+	/*E8*/	_R|_G,		_R|_G,		_R|_G,		_R|_G,
+		_R|_G,		_R|_G,		_R|_G,		_R|_G,
+	/*F0*/	_R|_G,		_R|_G,		_R|_G,		_R|_G,
+		_R|_G,		_R|_G,		_R|_G,		_P|_R|_G,
+	/*F8*/	_R|_G,		_R|_G,		_R|_G,		_R|_G,
+		_R|_G,		_R|_G,		_R|_G,		_R|_G,
+    },
+    {	0x00,	0x01,	0x02,	0x03,	0x04,	0x05,	0x06,	0x07,
+     	0x08,	0x09,	0x0a,	0x0b,	0x0c,	0x0d,	0x0e,	0x0f,
+	0x10,	0x11,	0x12,	0x13,	0x14,	0x15,	0x16,	0x17,
+     	0x18,	0x19,	0x1a,	0x1b,	0x1c,	0x1d,	0x1e,	0x1f,
+	0x20,	0x21,	0x22,	0x23,	0x24,	0x25,	0x26,	0x27,
+     	0x28,	0x29,	0x2a,	0x2b,	0x2c,	0x2d,	0x2e,	0x2f,
+	0x30,	0x31,	0x32,	0x33,	0x34,	0x35,	0x36,	0x37,
+     	0x38,	0x39,	0x3a,	0x3b,	0x3c,	0x3d,	0x3e,	0x3f,
+	0x40,	'a',	'b',	'c',	'd',	'e',	'f',	'g',
+     	'h',	'i',	'j',	'k',	'l',	'm',	'n',	'o',
+	'p',	'q',	'r',	's',	't',	'u',	'v',	'w',
+     	'x',	'y',	'z',	0x5b,	0x5c,	0x5d,	0x5e,	0x5f,
+	0x60,	'a',	'b',	'c',	'd',	'e',	'f',	'g',
+     	'h',	'i',	'j',	'k',	'l',	'm',	'n',	'o',
+	'p',	'q',	'r',	's',	't',	'u',	'v',	'w',
+     	'x',	'y',	'z',	0x7b,	0x7c,	0x7d,	0x7e,	0x7f,
+	0x80,	0x81,	0x82,	0x83,	0x84,	0x85,	0x86,	0x87,
+     	0x88,	0x89,	0x8a,	0x8b,	0x8c,	0x8d,	0x8e,	0x8f,
+	0x90,	0x91,	0x92,	0x93,	0x94,	0x95,	0x96,	0x97,
+     	0x98,	0x99,	0x9a,	0x9b,	0x9c,	0x9d,	0x9e,	0x9f,
+	0xa0,	0xa1,	0xa2,	0xa3,	0xa4,	0xa5,	0xa6,	0xa7,
+     	0xa8,	0xa9,	0xaa,	0xab,	0xac,	0xad,	0xae,	0xaf,
+	0xb0,	0xb1,	0xb2,	0xb3,	0xb4,	0xb5,	0xb6,	0xb7,
+     	0xb8,	0xb9,	0xba,	0xbb,	0xbc,	0xbd,	0xbe,	0xbf,
+	0xc0,	0xc1,	0xc2,	0xc3,	0xc4,	0xc5,	0xc6,	0xc7,
+     	0xc8,	0xc9,	0xca,	0xcb,	0xcc,	0xcd,	0xce,	0xcf,
+	0xd0,	0xd1,	0xd2,	0xd3,	0xd4,	0xd5,	0xd6,	0xd7,
+     	0xd8,	0xd9,	0xda,	0xdb,	0xdc,	0xdd,	0xde,	0xdf,
+	0xe0,	0xe1,	0xe2,	0xe3,	0xe4,	0xe5,	0xe6,	0xe7,
+     	0xe8,	0xe9,	0xea,	0xeb,	0xec,	0xed,	0xee,	0xef,
+	0xf0,	0xf1,	0xf2,	0xf3,	0xf4,	0xf5,	0xf6,	0xf7,
+     	0xf8,	0xf9,	0xfa,	0xfb,	0xfc,	0xfd,	0xfe,	0xff,
+    },
+    {	0x00,	0x01,	0x02,	0x03,	0x04,	0x05,	0x06,	0x07,
+     	0x08,	0x09,	0x0a,	0x0b,	0x0c,	0x0d,	0x0e,	0x0f,
+	0x10,	0x11,	0x12,	0x13,	0x14,	0x15,	0x16,	0x17,
+     	0x18,	0x19,	0x1a,	0x1b,	0x1c,	0x1d,	0x1e,	0x1f,
+	0x20,	0x21,	0x22,	0x23,	0x24,	0x25,	0x26,	0x27,
+     	0x28,	0x29,	0x2a,	0x2b,	0x2c,	0x2d,	0x2e,	0x2f,
+	0x30,	0x31,	0x32,	0x33,	0x34,	0x35,	0x36,	0x37,
+     	0x38,	0x39,	0x3a,	0x3b,	0x3c,	0x3d,	0x3e,	0x3f,
+	0x40,	'A',	'B',	'C',	'D',	'E',	'F',	'G',
+     	'H',	'I',	'J',	'K',	'L',	'M',	'N',	'O',
+	'P',	'Q',	'R',	'S',	'T',	'U',	'V',	'W',
+     	'X',	'Y',	'Z',	0x5b,	0x5c,	0x5d,	0x5e,	0x5f,
+	0x60,	'A',	'B',	'C',	'D',	'E',	'F',	'G',
+     	'H',	'I',	'J',	'K',	'L',	'M',	'N',	'O',
+	'P',	'Q',	'R',	'S',	'T',	'U',	'V',	'W',
+     	'X',	'Y',	'Z',	0x7b,	0x7c,	0x7d,	0x7e,	0x7f,
+	0x80,	0x81,	0x82,	0x83,	0x84,	0x85,	0x86,	0x87,
+     	0x88,	0x89,	0x8a,	0x8b,	0x8c,	0x8d,	0x8e,	0x8f,
+	0x90,	0x91,	0x92,	0x93,	0x94,	0x95,	0x96,	0x97,
+     	0x98,	0x99,	0x9a,	0x9b,	0x9c,	0x9d,	0x9e,	0x9f,
+	0xa0,	0xa1,	0xa2,	0xa3,	0xa4,	0xa5,	0xa6,	0xa7,
+     	0xa8,	0xa9,	0xaa,	0xab,	0xac,	0xad,	0xae,	0xaf,
+	0xb0,	0xb1,	0xb2,	0xb3,	0xb4,	0xb5,	0xb6,	0xb7,
+     	0xb8,	0xb9,	0xba,	0xbb,	0xbc,	0xbd,	0xbe,	0xbf,
+	0xc0,	0xc1,	0xc2,	0xc3,	0xc4,	0xc5,	0xc6,	0xc7,
+     	0xc8,	0xc9,	0xca,	0xcb,	0xcc,	0xcd,	0xce,	0xcf,
+	0xd0,	0xd1,	0xd2,	0xd3,	0xd4,	0xd5,	0xd6,	0xd7,
+     	0xd8,	0xd9,	0xda,	0xdb,	0xdc,	0xdd,	0xde,	0xdf,
+	0xe0,	0xe1,	0xe2,	0xe3,	0xe4,	0xe5,	0xe6,	0xe7,
+     	0xe8,	0xe9,	0xea,	0xeb,	0xec,	0xed,	0xee,	0xef,
+	0xf0,	0xf1,	0xf2,	0xf3,	0xf4,	0xf5,	0xf6,	0xf7,
+     	0xf8,	0xf9,	0xfa,	0xfb,	0xfc,	0xfd,	0xfe,	0xff,
+    },
+};
+
+_RuneLocale *_CurrentRuneLocale = &_DefaultRuneLocale;
+
+int __mb_cur_max = 1;
diff --git a/lib/libc/locale/toascii.3 b/lib/libc/locale/toascii.3
new file mode 100644
index 0000000..54fa292
--- /dev/null
+++ b/lib/libc/locale/toascii.3
@@ -0,0 +1,69 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)toascii.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt TOASCII 3
+.Os
+.Sh NAME
+.Nm toascii
+.Nd convert a byte to 7-bit ASCII
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Ft int
+.Fn toascii "int c"
+.Sh DESCRIPTION
+The
+.Fn toascii
+function strips all but the low 7 bits from a letter,
+including parity or other marker bits.
+.Sh RETURN VALUES
+The
+.Fn toascii
+function always returns a valid ASCII character.
+.Sh SEE ALSO
+.Xr isascii 3 ,
+.Xr isalnum 3 ,
+.Xr isalpha 3 ,
+.Xr iscntrl 3 ,
+.Xr isdigit 3 ,
+.Xr isgraph 3 ,
+.Xr islower 3 ,
+.Xr isprint 3 ,
+.Xr ispunct 3 ,
+.Xr isspace 3 ,
+.Xr isupper 3 ,
+.Xr isxdigit 3 ,
+.Xr tolower 3 ,
+.Xr toupper 3 ,
+.Xr stdio 3 ,
+.Xr ascii 7
diff --git a/lib/libc/locale/tolower.3 b/lib/libc/locale/tolower.3
new file mode 100644
index 0000000..49ce819
--- /dev/null
+++ b/lib/libc/locale/tolower.3
@@ -0,0 +1,88 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)tolower.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt TOLOWER 3
+.Os
+.Sh NAME
+.Nm tolower
+.Nd upper case to lower case letter conversion
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Ft int
+.Fn tolower "int c"
+.Sh DESCRIPTION
+The
+.Fn tolower
+function converts an upper-case letter to the corresponding lower-case
+letter.
+.Sh RETURN VALUES
+If the argument is an upper-case letter, the
+.Fn tolower
+function returns the corresponding lower-case letter if there is
+one; otherwise the argument is returned unchanged.
+.\" In the 
+.\" .Em ``C''
+.\" locale,
+.\" .Fn tolower
+.\" maps only the characters for which
+.\" .Xr isupper
+.\" is true to the corresponding characters for which
+.\" .Xr islower
+.\" is true.
+.Sh SEE ALSO
+.Xr isascii 3 ,
+.Xr isalnum 3 ,
+.Xr isalpha 3 ,
+.Xr iscntrl 3 ,
+.Xr isdigit 3 ,
+.Xr isgraph 3 ,
+.Xr islower 3 ,
+.Xr isprint 3 ,
+.Xr ispunct 3 ,
+.Xr isspace 3 ,
+.Xr isupper 3 ,
+.Xr isxdigit 3 ,
+.Xr toascii 3 ,
+.Xr toupper 3 ,
+.Xr stdio 3 ,
+.Xr ascii 7
+.Sh STANDARDS
+The
+.Fn tolower
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/locale/tolower.c b/lib/libc/locale/tolower.c
new file mode 100644
index 0000000..e72a52c
--- /dev/null
+++ b/lib/libc/locale/tolower.c
@@ -0,0 +1,69 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <rune.h>
+
+_BSD_RUNE_T_
+___tolower(c)
+	_BSD_RUNE_T_ c;
+{
+#ifdef XPG4
+	int x;
+	_RuneRange *rr = &_CurrentRuneLocale->maplower_ext;
+	_RuneEntry *re = rr->ranges;
+#endif
+
+	if (c == EOF)
+		return(EOF);
+	if (c < 0) {
+		if (c >= -128) /* signed char */
+			return(_CurrentRuneLocale->maplower[(unsigned char)c]);
+		else
+			return(c);
+	}
+#ifdef XPG4
+	for (x = 0; x < rr->nranges; ++x, ++re) {
+		if (c < re->min)
+			return(c);
+		if (c <= re->max)
+			return(re->map + c - re->min);
+	}
+#endif
+	return(c);
+}
+
+
diff --git a/lib/libc/locale/toupper.3 b/lib/libc/locale/toupper.3
new file mode 100644
index 0000000..cd0b36e
--- /dev/null
+++ b/lib/libc/locale/toupper.3
@@ -0,0 +1,88 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)toupper.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt TOUPPER 3
+.Os
+.Sh NAME
+.Nm toupper
+.Nd lower case to upper case letter conversion
+.Sh SYNOPSIS
+.Fd #include <ctype.h>
+.Ft int
+.Fn toupper "int c"
+.Sh DESCRIPTION
+The
+.Fn toupper
+function converts a lower-case letter to the corresponding 
+upper-case letter.
+.SH RETURN VALUES
+If the argument is a lower-case letter, the
+.Fn toupper
+function returns the corresponding upper-case letter if there is
+one; otherwise the argument is returned unchanged.
+.\" In the 
+.\" .Em ``C''
+.\" locale,
+.\" .Fn toupper
+.\" maps only the characters for which
+.\" .Xr islower
+.\" is true to the corresponding characters for which
+.\" .Xr isupper
+.\" is true.	
+.Sh SEE ALSO
+.Xr isascii 3 ,
+.Xr isalnum 3 ,
+.Xr isalpha 3 ,
+.Xr iscntrl 3 ,
+.Xr isdigit 3 ,
+.Xr isgraph 3 ,
+.Xr islower 3 ,
+.Xr isprint 3 ,
+.Xr ispunct 3 ,
+.Xr isspace 3 ,
+.Xr isupper 3 ,
+.Xr isxdigit 3 ,
+.Xr toascii 3 ,
+.Xr tolower 3 ,
+.Xr stdio 3 ,
+.Xr ascii 7
+.Sh STANDARDS
+The
+.Fn toupper
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/locale/toupper.c b/lib/libc/locale/toupper.c
new file mode 100644
index 0000000..08be64b
--- /dev/null
+++ b/lib/libc/locale/toupper.c
@@ -0,0 +1,68 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <rune.h>
+
+_BSD_RUNE_T_
+___toupper(c)
+	_BSD_RUNE_T_ c;
+{
+#ifdef XPG4
+	int x;
+	_RuneRange *rr = &_CurrentRuneLocale->mapupper_ext;
+	_RuneEntry *re = rr->ranges;
+#endif
+
+	if (c == EOF)
+		return(EOF);
+	if (c < 0) {
+		if (c >= -128) /* signed char */
+			return(_CurrentRuneLocale->mapupper[(unsigned char)c]);
+		else
+			return(c);
+	}
+#ifdef XPG4
+	for (x = 0; x < rr->nranges; ++x, ++re) {
+		if (c < re->min)
+			return(c);
+		if (c <= re->max)
+			return(re->map + c - re->min);
+	}
+#endif
+	return(c);
+}
+
diff --git a/lib/libc/locale/utf2.4 b/lib/libc/locale/utf2.4
new file mode 100644
index 0000000..20a9587
--- /dev/null
+++ b/lib/libc/locale/utf2.4
@@ -0,0 +1,86 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Paul Borman at Krystal Technologies.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)utf2.4	8.1 (Berkeley) 6/4/93
+.\"
+.Dd "June 4, 1993"
+.Dt UTF2 4
+.Os
+.Sh NAME
+.Nm UTF2
+.Nd "Universal character set Transformation Format encoding of runes
+.Sh SYNOPSIS
+\fBENCODING "UTF2"\fP
+.Sh DESCRIPTION
+The
+.Nm UTF2
+encoding is based on a proposed X-Open multibyte
+\s-1FSS-UCS-TF\s+1 (File System Safe Universal Character Set Transformation Format) encoding as used in
+.Nm Plan 9 from Bell Labs.
+Although it is capable of representing more than 16 bits,
+the current implementation is limited to 16 bits as defined by the
+Unicode Standard.
+.Pp
+.Nm UTF2
+representation is backwards compatible with ASCII, so 0x00-0x7f refer to the
+ASCII character set.  The multibyte encoding of runes between 0x0080 and 0xffff
+consist entirely of bytes whose high order bit is set.  The actual
+encoding is represented by the following table:
+.Bd -literal
+[0x0000 - 0x007f] [00000000.0bbbbbbb] -> 0bbbbbbb
+[0x0080 - 0x03ff] [00000bbb.bbbbbbbb] -> 110bbbbb, 10bbbbbb
+[0x0400 - 0xffff] [bbbbbbbb.bbbbbbbb] -> 1110bbbb, 10bbbbbb, 10bbbbbb
+.Ed
+.sp
+If more than a single representation of a value exists (for example,
+0x00; 0xC0 0x80; 0xE0 0x80 0x80) the shortest representation is always
+used (but the longer ones will be correctly decoded).
+.Pp
+The final three encodings provided by X-Open:
+.Bd -literal
+[00000000.000bbbbb.bbbbbbbb.bbbbbbbb] ->
+	11110bbb, 10bbbbbb, 10bbbbbb, 10bbbbbb
+
+[000000bb.bbbbbbbb.bbbbbbbb.bbbbbbbb] ->
+	111110bb, 10bbbbbb, 10bbbbbb, 10bbbbbb, 10bbbbbb
+
+[0bbbbbbb.bbbbbbbb.bbbbbbbb.bbbbbbbb] ->
+	1111110b, 10bbbbbb, 10bbbbbb, 10bbbbbb, 10bbbbbb, 10bbbbbb
+.Ed
+.sp
+which provides for the entire proposed ISO-10646 31 bit standard are currently
+not implemented.
+.Sh "SEE ALSO"
+.Xr mklocale 1 ,
+.Xr setlocale 3
diff --git a/lib/libc/locale/utf2.5 b/lib/libc/locale/utf2.5
new file mode 100644
index 0000000..20a9587
--- /dev/null
+++ b/lib/libc/locale/utf2.5
@@ -0,0 +1,86 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Paul Borman at Krystal Technologies.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)utf2.4	8.1 (Berkeley) 6/4/93
+.\"
+.Dd "June 4, 1993"
+.Dt UTF2 4
+.Os
+.Sh NAME
+.Nm UTF2
+.Nd "Universal character set Transformation Format encoding of runes
+.Sh SYNOPSIS
+\fBENCODING "UTF2"\fP
+.Sh DESCRIPTION
+The
+.Nm UTF2
+encoding is based on a proposed X-Open multibyte
+\s-1FSS-UCS-TF\s+1 (File System Safe Universal Character Set Transformation Format) encoding as used in
+.Nm Plan 9 from Bell Labs.
+Although it is capable of representing more than 16 bits,
+the current implementation is limited to 16 bits as defined by the
+Unicode Standard.
+.Pp
+.Nm UTF2
+representation is backwards compatible with ASCII, so 0x00-0x7f refer to the
+ASCII character set.  The multibyte encoding of runes between 0x0080 and 0xffff
+consist entirely of bytes whose high order bit is set.  The actual
+encoding is represented by the following table:
+.Bd -literal
+[0x0000 - 0x007f] [00000000.0bbbbbbb] -> 0bbbbbbb
+[0x0080 - 0x03ff] [00000bbb.bbbbbbbb] -> 110bbbbb, 10bbbbbb
+[0x0400 - 0xffff] [bbbbbbbb.bbbbbbbb] -> 1110bbbb, 10bbbbbb, 10bbbbbb
+.Ed
+.sp
+If more than a single representation of a value exists (for example,
+0x00; 0xC0 0x80; 0xE0 0x80 0x80) the shortest representation is always
+used (but the longer ones will be correctly decoded).
+.Pp
+The final three encodings provided by X-Open:
+.Bd -literal
+[00000000.000bbbbb.bbbbbbbb.bbbbbbbb] ->
+	11110bbb, 10bbbbbb, 10bbbbbb, 10bbbbbb
+
+[000000bb.bbbbbbbb.bbbbbbbb.bbbbbbbb] ->
+	111110bb, 10bbbbbb, 10bbbbbb, 10bbbbbb, 10bbbbbb
+
+[0bbbbbbb.bbbbbbbb.bbbbbbbb.bbbbbbbb] ->
+	1111110b, 10bbbbbb, 10bbbbbb, 10bbbbbb, 10bbbbbb, 10bbbbbb
+.Ed
+.sp
+which provides for the entire proposed ISO-10646 31 bit standard are currently
+not implemented.
+.Sh "SEE ALSO"
+.Xr mklocale 1 ,
+.Xr setlocale 3
diff --git a/lib/libc/locale/utf2.c b/lib/libc/locale/utf2.c
new file mode 100644
index 0000000..c46dd93
--- /dev/null
+++ b/lib/libc/locale/utf2.c
@@ -0,0 +1,150 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifdef XPG4
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)utf2.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <errno.h>
+#include <rune.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+rune_t	_UTF2_sgetrune __P((const char *, size_t, char const **));
+int	_UTF2_sputrune __P((rune_t, char *, size_t, char **));
+
+static _utf_count[16] = {
+	1, 1, 1, 1, 1, 1, 1, 1,
+	0, 0, 0, 0, 2, 2, 3, 0,
+};
+
+int
+_UTF2_init(rl)
+	_RuneLocale *rl;
+{
+	rl->sgetrune = _UTF2_sgetrune;
+	rl->sputrune = _UTF2_sputrune;
+	_CurrentRuneLocale = rl;
+	__mb_cur_max = 3;
+	return (0);
+}
+
+rune_t
+_UTF2_sgetrune(string, n, result)
+	const char *string;
+	size_t n;
+	char const **result;
+{
+	int c;
+
+	if (n < 1 || (c = _utf_count[(*string >> 4) & 0xf]) > n) {
+		if (result)
+			*result = string;
+		return (_INVALID_RUNE);
+	}
+	switch (c) {
+	case 1:
+		if (result)
+			*result = string + 1;
+		return (*string & 0xff);
+	case 2:
+		if ((string[1] & 0xC0) != 0x80)
+			goto encoding_error;
+		if (result)
+			*result = string + 2;
+		return (((string[0] & 0x1F) << 6) | (string[1] & 0x3F));
+	case 3:
+		if ((string[1] & 0xC0) != 0x80 || (string[2] & 0xC0) != 0x80)
+			goto encoding_error;
+		if (result)
+			*result = string + 3;
+		return (((string[0] & 0x1F) << 12) | ((string[1] & 0x3F) << 6)
+		    | (string[2] & 0x3F));
+	default:
+encoding_error:	if (result)
+			*result = string + 1;
+		return (_INVALID_RUNE);
+	}
+}
+
+int
+_UTF2_sputrune(c, string, n, result)
+	rune_t c;
+	char *string, **result;
+	size_t n;
+{
+	if (c & 0xF800) {
+		if (n >= 3) {
+			if (string) {
+				string[0] = 0xE0 | ((c >> 12) & 0x0F);
+				string[1] = 0x80 | ((c >> 6) & 0x3F);
+				string[2] = 0x80 | ((c) & 0x3F);
+			}
+			if (result)
+				*result = string + 3;
+		} else
+			if (result)
+				*result = NULL;
+
+		return (3);
+	} else
+		if (c & 0x0780) {
+			if (n >= 2) {
+				if (string) {
+					string[0] = 0xC0 | ((c >> 6) & 0x1F);
+					string[1] = 0x80 | ((c) & 0x3F);
+				}
+				if (result)
+					*result = string + 2;
+			} else
+				if (result)
+					*result = NULL;
+			return (2);
+		} else {
+			if (n >= 1) {
+				if (string)
+					string[0] = c;
+				if (result)
+					*result = string + 1;
+			} else
+				if (result)
+					*result = NULL;
+			return (1);
+		}
+}
+#endif /* XPG4 */
diff --git a/lib/libc/net/Makefile.inc b/lib/libc/net/Makefile.inc
new file mode 100644
index 0000000..4bcd682
--- /dev/null
+++ b/lib/libc/net/Makefile.inc
@@ -0,0 +1,43 @@
+#	@(#)Makefile.inc	8.2 (Berkeley) 9/5/93
+
+# machine-independent net sources
+.PATH: ${.CURDIR}/${MACHINE}/net ${.CURDIR}/net
+
+SRCS+=	gethostbydns.c gethostbyht.c gethostbynis.c gethostnamadr.c \
+	getnetbydns.c getnetbyht.c getnetbynis.c getnetnamadr.c \
+	getproto.c getprotoent.c getprotoname.c getservbyname.c \
+	getservbyport.c getservent.c herror.c inet_addr.c inet_lnaof.c \
+	inet_makeaddr.c inet_netof.c inet_network.c inet_ntoa.c \
+	iso_addr.c linkaddr.c ns_addr.c ns_ntoa.c rcmd.c recv.c res_comp.c \
+	res_debug.c res_init.c res_mkquery.c res_query.c res_send.c \
+	send.c ether_addr.c
+
+# machine-dependent net sources
+.include "${.CURDIR}/${MACHINE}/net/Makefile.inc"
+
+MAN3+=	net/byteorder.3 net/ethers.3 net/gethostbyname.3 net/getnetent.3 \
+	net/getprotoent.3 net/getservent.3 net/inet.3 net/linkaddr.3 \
+	net/ns.3 net/rcmd.3 net/resolver.3
+
+MLINKS+=byteorder.3 htonl.3 byteorder.3 htons.3 byteorder.3 ntohl.3 \
+	byteorder.3 ntohs.3
+MLINKS+=ethers.3 ether_line.3 ethers.3 ether_aton.3 ethers.3 ether_ntoa.3 \
+	ethers.3 ether_ntohost.3 ethers.3 ether_hostton.3
+MLINKS+=gethostbyname.3 endhostent.3 gethostbyname.3 gethostbyaddr.3 \
+	gethostbyname.3 sethostent.3 gethostbyname.3 gethostent.3 \
+	gethostbyname.3 herror.3
+MLINKS+=getnetent.3 endnetent.3 getnetent.3 getnetbyaddr.3 \
+	getnetent.3 getnetbyname.3 getnetent.3 setnetent.3
+MLINKS+=getprotoent.3 endprotoent.3 getprotoent.3 getprotobyname.3 \
+	getprotoent.3 getprotobynumber.3 getprotoent.3 setprotoent.3
+MLINKS+=getservent.3 endservent.3 getservent.3 getservbyname.3 \
+	getservent.3 getservbyport.3 getservent.3 setservent.3
+MLINKS+=inet.3 addr.3 inet.3 inet_addr.3 inet.3 inet_lnaof.3 \
+	inet.3 inet_makeaddr.3 inet.3 inet_netof.3 inet.3 inet_network.3 \
+	inet.3 inet_ntoa.3 inet.3 network.3 inet.3 ntoa.3 inet.3 inet_aton.3
+MLINKS+=linkaddr.3 linkntoa.3
+MLINKS+=ns.3 ns_addr.3 ns.3 ns_ntoa.3
+MLINKS+=rcmd.3 rresvport.3 rcmd.3 iruserok.3 rcmd.3 ruserok.3
+MLINKS+=resolver.3 dn_comp.3 resolver.3 dn_expand.3 resolver.3 res_init.3 \
+	resolver.3 res_mkquery.3 resolver.3 res_send.3 resolver.3 res_query.3 \
+	resolver.3 res_search.3
diff --git a/lib/libc/net/byteorder.3 b/lib/libc/net/byteorder.3
new file mode 100644
index 0000000..666521b
--- /dev/null
+++ b/lib/libc/net/byteorder.3
@@ -0,0 +1,76 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)byteorder.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt BYTEORDER 3
+.Os BSD 4.2
+.Sh NAME
+.Nm htonl ,
+.Nm htons ,
+.Nm ntohl ,
+.Nm ntohs
+.Nd convert values between host and network byte order
+.Sh SYNOPSIS
+.Fd #include <sys/param.h>
+.Ft u_long
+.Fn htonl "u_long hostlong"
+.Ft u_short
+.Fn htons "u_short hostshort"
+.Ft u_long
+.Fn ntohl "u_long netlong"
+.Ft u_short
+.Fn ntohs "u_short netshort"
+.Sh DESCRIPTION
+These routines convert 16 and 32 bit quantities between network
+byte order and host byte order.
+On machines which have a byte order which is the same as the network
+order, routines are defined as null macros.
+.Pp
+These routines are most often used in conjunction with Internet
+addresses and ports as returned by
+.Xr gethostbyname 3
+and
+.Xr getservent 3 .
+.Sh SEE ALSO
+.Xr gethostbyname 3 ,
+.Xr getservent 3
+.Sh HISTORY
+The
+.Nm byteorder
+functions appeared in 
+.Bx 4.2 .
+.Sh BUGS
+On the
+.Tn VAX
+bytes are handled backwards from most everyone else in
+the world.  This is not expected to be fixed in the near future.
diff --git a/lib/libc/net/ether_addr.c b/lib/libc/net/ether_addr.c
new file mode 100644
index 0000000..711bb7d
--- /dev/null
+++ b/lib/libc/net/ether_addr.c
@@ -0,0 +1,219 @@
+/*
+ * Copyright (c) 1995
+ *	Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Bill Paul.
+ * 4. Neither the name of the author nor the names of any co-contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * ethernet address conversion and lookup routines
+ *
+ * Written by Bill Paul <wpaul@ctr.columbia.edu>
+ * Center for Telecommunications Research
+ * Columbia University, New York City
+ *
+ *	$Id: ether_addr.c,v 1.1 1995/04/02 01:31:17 wpaul Exp $
+ */
+
+
+#include <stdio.h>
+#include <paths.h>
+#include <sys/types.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <netinet/in.h>
+#include <netinet/if_ether.h>
+#ifdef YP
+#include <rpc/rpc.h>
+#include <rpcsvc/yp_prot.h>
+#include <rpcsvc/ypclnt.h>
+#endif
+
+#ifndef _PATH_ETHERS
+#define _PATH_ETHERS "/etc/ethers"
+#endif
+
+/*
+ * Parse a string of text containing an ethernet address and hostname
+ * and separate it into its component parts.
+ */
+int ether_line(l, e, hostname)
+        char *l;
+	struct ether_addr *e;
+	char *hostname;
+{
+        int i, o[6];
+
+        i = sscanf(l, "%x:%x:%x:%x:%x:%x %s", &o[0], &o[1], &o[2],
+                                              &o[3], &o[4], &o[5],
+					      hostname);
+	if (i != 7)
+                return (i);
+
+        for (i=0; i<6; i++)
+                e->octet[i] = o[i];
+        return (0);
+}
+
+/*
+ * Convert an ASCII representation of an ethernet address to
+ * binary form.
+ */
+struct ether_addr *ether_aton(a)
+        char *a;
+{
+        int i;
+	static struct ether_addr o;
+
+        i = sscanf(a, "%x:%x:%x:%x:%x:%x", o.octet[0], o.octet[1], o.octet[2],
+                                           o.octet[3], o.octet[4], o.octet[5]);
+        if (i != 6)
+                return (NULL);
+        return ((struct ether_addr *)&o);
+}
+
+/*
+ * Convert a binary representation of an ethernet address to
+ * an ASCII string.
+ */
+char *ether_ntoa(n)
+        struct ether_addr *n;
+{
+        int i;
+	static char a[18];
+
+        i = sprintf(a,"%x:%x:%x:%x:%x:%x",n->octet[0],n->octet[1],n->octet[2],
+                                          n->octet[3],n->octet[4],n->octet[5]);
+        if (i < 11)
+                return (NULL);
+        return ((char *)&a);
+}
+
+/*
+ * Map an ethernet address to a hostname. Use either /etc/ethers or
+ * NIS/YP.
+ */
+
+int ether_ntohost(hostname, e)
+	char *hostname;
+	struct ether_addr *e;
+{
+	FILE *fp;
+	char buf[BUFSIZ];
+	struct ether_addr local_ether;
+	char local_host[MAXHOSTNAMELEN];
+#ifdef YP
+	char *result;
+	int resultlen;
+	char *ether_a;
+	char *yp_domain;
+#endif
+	if ((fp = fopen(_PATH_ETHERS, "r")) == NULL)
+		return (1);
+
+	while (fgets(buf,BUFSIZ,fp)) {
+		if (buf[0] == '#')
+			continue;
+#ifdef YP
+		if (buf[0] == '+') {
+			if (yp_get_default_domain(&yp_domain))
+				continue;
+			ether_a = ether_ntoa(e);
+			if (yp_match(yp_domain, "ethers.byaddr", ether_a,
+				strlen(ether_a), &result, &resultlen)) {
+				free(result);
+				continue;
+			}
+			strncpy((char *)&buf, result, resultlen);
+				free(result);
+		}
+#endif
+		if (!ether_line(&buf, &local_ether, &local_host)) {
+			if (!bcmp((char *)&local_ether.octet[0],
+				(char *)&e->octet[0], 6)) {
+			/* We have a match */
+				strcpy(hostname, (char *)&local_host);
+				fclose(fp);
+				return(0);
+			}
+		}
+	}
+	fclose(fp);
+	return (1);
+}
+
+/*
+ * Map a hostname to an ethernet address using /etc/ethers or
+ * NIS/YP.
+ */
+int ether_hostton(hostname, e)
+	char *hostname;
+	struct ether_addr *e;
+{
+	FILE *fp;
+	char buf[BUFSIZ];
+	struct ether_addr local_ether;
+	char local_host[MAXHOSTNAMELEN];
+#ifdef YP
+	char *result;
+	int resultlen;
+	char *yp_domain;
+#endif
+	if ((fp = fopen(_PATH_ETHERS, "r")) == NULL)
+		return (1);
+
+	while (fgets(buf,BUFSIZ,fp)) {
+		if (buf[0] == '#')
+			continue;
+#ifdef YP
+		if (buf[0] == '+') {
+			if (yp_get_default_domain(&yp_domain))
+				continue;
+			if (yp_match(yp_domain, "ethers.byname", hostname,
+				strlen(hostname), &result, &resultlen)) {
+				free(result);
+				continue;
+			}
+			strncpy((char *)&buf, result, resultlen);
+			free(result);
+		}
+#endif
+		if (!ether_line(&buf, &local_ether, &local_host)) {
+			if (!strcmp(hostname, (char *)&local_host)) {
+				/* We have a match */
+				bcopy((char *)&local_ether.octet[0],
+					(char *)&e->octet[0], 6);
+				fclose(fp);
+				return(0);
+			}
+		}
+	}
+	fclose(fp);
+	return (1);
+}
diff --git a/lib/libc/net/ethers.3 b/lib/libc/net/ethers.3
new file mode 100644
index 0000000..337618e
--- /dev/null
+++ b/lib/libc/net/ethers.3
@@ -0,0 +1,185 @@
+.\" Copyright (c) 1995
+.\"	Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by Bill Paul.
+.\" 4. Neither the name of the author nor the names of any co-contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     $Id$
+.\"
+.Dd April 12, 1995
+.Dt ETHERS 3
+.Os FreeBSD 2.1
+.Sh NAME
+.Nm ethers ,
+.Nm ether_line ,
+.Nm ether_aton ,
+.Nm ether_ntoa ,
+.Nm ether_ntohost ,
+.Nm ether_hostton
+.Nd Ethernet address conversion and lookup routines
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/socket.h>
+.Fd #include <net/if.h>
+.Fd #include <netinet/in.h>
+.Fd #include <netinet/if_ether.h>
+.Ft int
+.Fn ether_line "char *l" "struct ether_addr *e" "char *hostname"
+.Ft struct ether_addr *
+.Fn ether_aton "char *a"
+.Ft char *
+.Fn ether_ntoa "struct ether_addr *n"
+.Ft int
+.Fn ether_ntohost "char *hostname" "struct ether_addr *e"
+.Ft int
+.Fn ether_hostton "char *hostname" "struct ether_addr *e"
+.Sh DESCRIPTION
+These functions operate on ethernet addresses using an
+.Ar ether_addr
+structure, which is defined in the header file
+.Aq Pa netinet/if_ether.h :
+.Bd -literal -offset indent
+/*
+ * Structure of a 48-bit Ethernet address.
+ */
+struct  ether_addr {
+        u_char octet[6];
+};
+.Ed
+.Pp
+The function
+.Fn ether_line
+scans
+.Ar l ,
+an
+.Tn ASCII
+string in
+.Xr ethers 5
+format and sets
+.Ar e
+to the ethernet address specified in the string and
+.Ar h
+to the hostname. This function is used to parse lines from
+.Pa /etc/ethers
+into their component parts.
+.Pp
+The
+.Fn ether_aton
+function converts an
+.Tn ASCII
+representation of an ethernet address into an
+.Ar ether_addr
+structure. Likewise,
+.Fn ether_ntoa
+converts an ethernet address specified as an
+.Ar ether_addr
+structure into an
+.Tn ASCII
+string.
+.Pp
+The
+.Fn ether_ntohost
+and
+.Fn ether_hostton
+functions map ethernet addresses to their corresponding hostnames
+as specified in the
+.Pa /etc/ethers
+database. 
+.Fn ether_ntohost
+converts from ethernet address to hostname, and
+.Fn ether_hostton
+converts from hostname to ethernet address.
+.Sh RETURN VALUES
+.Fn ether_line
+returns zero on success and non-zero if it was unable to parse
+any part of the supplied line
+.Ar l .
+It returns the extracted ethernet address in the supplied
+.Ar ether_addr
+structure
+.Ar e
+and the hostname in the supplied string
+.Ar h .
+.Pp
+On success, 
+.Fn ether_ntoa
+returns a pointer to a string containing an
+.Tn ASCII
+representation of an ethernet address. If it is unable to convert
+the supplied
+.Ar ether_addr
+structure, it returns a NULL pointer. Likewise,
+.Fn ether_aton
+returns a pointer to an
+.Ar ether_addr
+structure on success and a NULL pointer on failure.
+.Pp
+The
+.Fn ether_ntohost
+and
+.Fn ether_hostton
+functions both return zero on success or non-zero if they were
+unable to find a match in the
+.Pa /etc/ethers
+database.
+.Sh NOTES
+The user must insure that the hostname strings passed to the
+the
+.Fn ether_line ,
+.Fn ether_ntohost
+and
+.Fn ether_hostton
+functions are large enough to contain the returned hostnames.
+.Sh NIS INTERACTION
+If the
+.Pa /etc/ethers
+contains a line with a single + in it, the
+.Fn ether_ntohost
+and
+.Fn ether_hostton
+functions will attempt to consult the NIS
+.Pa ethers.byname
+and
+.Pa ethers.byaddr
+maps in addition to the data in the
+.Pa /etc/ethers
+file.
+.Sh SEE ALSO
+.Xr ethers 5 ,
+.Xr yp 8
+.Sh BUGS
+.Pp
+The
+.Fn ether_aton
+and
+.Fn ether_ntoa
+functions returns values that are stored in static memory areas
+which may be overwritten the next time they are called.
+.Sh HISTORY
+This particular implementation of the
+.Nm ethers
+library functions was written for and first appeared in FreeBSD 2.1.
diff --git a/lib/libc/net/gethostbydns.c b/lib/libc/net/gethostbydns.c
new file mode 100644
index 0000000..7b1e2d6
--- /dev/null
+++ b/lib/libc/net/gethostbydns.c
@@ -0,0 +1,551 @@
+/*-
+ * Copyright (c) 1985, 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * -
+ * Portions Copyright (c) 1993 by Digital Equipment Corporation.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies, and that
+ * the name of Digital Equipment Corporation not be used in advertising or
+ * publicity pertaining to distribution of the document or software without
+ * specific, written prior permission.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
+ * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ * -
+ * --Copyright--
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)gethostnamadr.c	8.1 (Berkeley) 6/4/93";
+static char rcsid[] = "$Id: gethostbydns.c,v 1.6 1995/08/21 09:15:32 bde Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <netdb.h>
+#include <resolv.h>
+#include <ctype.h>
+#include <errno.h>
+#include <syslog.h>
+
+#include "res_config.h"
+
+#define	MAXALIASES	35
+#define	MAXADDRS	35
+
+#define	MULTI_PTRS_ARE_ALIASES 1	/* XXX - experimental */
+
+static const char AskedForGot[] =
+		  "gethostby*.gethostanswer: asked for \"%s\", got \"%s\"";
+
+static char *h_addr_ptrs[MAXADDRS + 1];
+
+static struct hostent host;
+static char *host_aliases[MAXALIASES];
+static char hostbuf[8*1024];
+static struct in_addr host_addr;
+static FILE *hostf = NULL;
+static int stayopen = 0;
+
+#if PACKETSZ > 1024
+#define	MAXPACKET	PACKETSZ
+#else
+#define	MAXPACKET	1024
+#endif
+
+typedef union {
+    HEADER hdr;
+    u_char buf[MAXPACKET];
+} querybuf;
+
+typedef union {
+    int32_t al;
+    char ac;
+} align;
+
+extern int h_errno;
+
+#ifdef DEBUG
+static void
+dprintf(msg, num)
+	char *msg;
+	int num;
+{
+	if (_res.options & RES_DEBUG) {
+		int save = errno;
+
+		printf(msg, num);
+		errno = save;
+	}
+}
+#else
+# define dprintf(msg, num) /*nada*/
+#endif
+
+
+#ifdef RESOLVSORT
+static void
+addrsort(ap, num)
+	char **ap;
+	int num;
+{
+	int i, j;
+	char **p;
+	short aval[MAXADDRS];
+	int needsort = 0;
+
+	p = ap;
+	for (i = 0; i < num; i++, p++) {
+	    for (j = 0 ; (unsigned)j < _res.nsort; j++)
+		if (_res.sort_list[j].addr.s_addr ==
+		    (((struct in_addr *)(*p))->s_addr & _res.sort_list[j].mask))
+			break;
+	    aval[i] = j;
+	    if (needsort == 0 && i > 0 && j < aval[i-1])
+		needsort = i;
+	}
+	if (!needsort)
+	    return;
+
+	while (needsort < num) {
+	    for (j = needsort - 1; j >= 0; j--) {
+		if (aval[j] > aval[j+1]) {
+		    char *hp;
+
+		    i = aval[j];
+		    aval[j] = aval[j+1];
+		    aval[j+1] = i;
+
+		    hp = ap[j];
+		    ap[j] = ap[j+1];
+		    ap[j+1] = hp;
+
+		} else
+		    break;
+	    }
+	    needsort++;
+	}
+}
+#endif
+
+static struct hostent *
+gethostanswer(answer, anslen, qname, qclass, qtype)
+	const querybuf *answer;
+	int anslen;
+	const char *qname;
+	int qclass, qtype;
+{
+	register const HEADER *hp;
+	register const u_char *cp;
+	register int n;
+	const u_char *eom;
+	char *bp, **ap, **hap;
+	int type, class, buflen, ancount, qdcount;
+	int haveanswer, had_error;
+	int toobig = 0;
+	char tbuf[MAXDNAME+1];
+
+	host.h_name = NULL;
+	eom = answer->buf + anslen;
+	/*
+	 * find first satisfactory answer
+	 */
+	hp = &answer->hdr;
+	ancount = ntohs(hp->ancount);
+	qdcount = ntohs(hp->qdcount);
+	bp = hostbuf;
+	buflen = sizeof hostbuf;
+	cp = answer->buf + HFIXEDSZ;
+	if (qdcount != 1) {
+		h_errno = NO_RECOVERY;
+		return (NULL);
+	}
+	if ((n = dn_expand(answer->buf, eom, cp, bp, buflen)) < 0) {
+		h_errno = NO_RECOVERY;
+		return (NULL);
+	}
+	cp += n + QFIXEDSZ;
+	if (qtype == T_A) {
+		/* res_send() has already verified that the query name is the
+		 * same as the one we sent; this just gets the expanded name
+		 * (i.e., with the succeeding search-domain tacked on).
+		 */
+		n = strlen(bp) + 1;		/* for the \0 */
+		host.h_name = bp;
+		bp += n;
+		buflen -= n;
+		/* The qname can be abbreviated, but h_name is now absolute. */
+		qname = host.h_name;
+	}
+	ap = host_aliases;
+	*ap = NULL;
+	host.h_aliases = host_aliases;
+	hap = h_addr_ptrs;
+	*hap = NULL;
+	host.h_addr_list = h_addr_ptrs;
+	haveanswer = 0;
+	had_error = 0;
+	while (ancount-- > 0 && cp < eom && !had_error) {
+		n = dn_expand(answer->buf, eom, cp, bp, buflen);
+		if (n < 0) {
+			had_error++;
+			continue;
+		}
+		cp += n;			/* name */
+		type = _getshort(cp);
+ 		cp += INT16SZ;			/* type */
+		class = _getshort(cp);
+ 		cp += INT16SZ + INT32SZ;	/* class, TTL */
+		n = _getshort(cp);
+		cp += INT16SZ;			/* len */
+		if (class != qclass) {
+			/* XXX - debug? syslog? */
+			cp += n;
+			continue;		/* XXX - had_error++ ? */
+		}
+		if (qtype == T_A && type == T_CNAME) {
+			if (ap >= &host_aliases[MAXALIASES-1])
+				continue;
+			n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf);
+			if (n < 0) {
+				had_error++;
+				continue;
+			}
+			cp += n;
+			if (host.h_name && strcasecmp(host.h_name, bp) != 0) {
+				syslog(LOG_NOTICE|LOG_AUTH,
+		"gethostby*.gethostanswer: asked for \"%s\", got CNAME for \"%s\"",
+				       host.h_name, bp);
+				continue;	/* XXX - had_error++ ? */
+			}
+			/* Store alias. */
+			*ap++ = bp;
+			n = strlen(bp) + 1;	/* for the \0 */
+			bp += n;
+			buflen -= n;
+			/* Get canonical name. */
+			n = strlen(tbuf) + 1;	/* for the \0 */
+			if (n > buflen) {
+				had_error++;
+				continue;
+			}
+			strcpy(bp, tbuf);
+			host.h_name = bp;
+			bp += n;
+			buflen -= n;
+			continue;
+		}
+		if (type != qtype) {
+			/* CNAME->PTR should not cause a log message. */
+			if (!(qtype == T_PTR && type == T_CNAME))
+			syslog(LOG_NOTICE|LOG_AUTH,
+	       "gethostby*.gethostanswer: asked for \"%s %s %s\", got type \"%s\"",
+				       qname, p_class(qclass), p_type(qtype),
+				       p_type(type));
+			cp += n;
+			continue;		/* XXX - had_error++ ? */
+		}
+		switch (type) {
+		case T_PTR:
+			if (strcasecmp(qname, bp) != 0) {
+				syslog(LOG_NOTICE|LOG_AUTH,
+				       AskedForGot, qname, bp);
+				cp += n;
+				continue;	/* XXX - had_error++ ? */
+			}
+			n = dn_expand(answer->buf, eom, cp, bp, buflen);
+			if (n < 0) {
+				had_error++;
+				break;
+			}
+#if MULTI_PTRS_ARE_ALIASES
+			cp += n;
+			if (!haveanswer)
+				host.h_name = bp;
+			else if (ap < &host_aliases[MAXALIASES-1])
+				*ap++ = bp;
+			else
+				n = -1;
+			if (n != -1) {
+				n = strlen(bp) + 1;	/* for the \0 */
+				bp += n;
+				buflen -= n;
+			}
+			break;
+#else
+			host.h_name = bp;
+			h_errno = NETDB_SUCCESS;
+			return (&host);
+#endif
+		case T_A:
+			if (strcasecmp(host.h_name, bp) != 0) {
+				syslog(LOG_NOTICE|LOG_AUTH,
+				       AskedForGot, host.h_name, bp);
+				cp += n;
+				continue;	/* XXX - had_error++ ? */
+			}
+			if (haveanswer) {
+				if (n != host.h_length) {
+					cp += n;
+					continue;
+				}
+			} else {
+				register int nn;
+
+				host.h_length = n;
+				host.h_addrtype = (class == C_IN)
+						  ? AF_INET
+						  : AF_UNSPEC;
+				host.h_name = bp;
+				nn = strlen(bp) + 1;	/* for the \0 */
+				bp += nn;
+				buflen -= nn;
+			}
+
+			bp += sizeof(align) - ((u_long)bp % sizeof(align));
+
+			if (bp + n >= &hostbuf[sizeof hostbuf]) {
+				dprintf("size (%d) too big\n", n);
+				had_error++;
+				continue;
+			}
+			if (hap >= &h_addr_ptrs[MAXADDRS-1]) {
+				if (!toobig++)
+					dprintf("Too many addresses (%d)\n",
+					       MAXADDRS);
+				cp += n;
+				continue;
+			}
+			bcopy(cp, *hap++ = bp, n);
+			bp += n;
+			cp += n;
+			break;
+		default:
+			dprintf("Impossible condition (type=%d)\n", type);
+			h_errno = NO_RECOVERY;
+			return (NULL);
+		} /*switch*/
+		if (!had_error)
+			haveanswer++;
+	} /*while*/
+	if (haveanswer) {
+		*ap = NULL;
+		*hap = NULL;
+# if defined(RESOLVSORT)
+		/*
+		 * Note: we sort even if host can take only one address
+		 * in its return structures - should give it the "best"
+		 * address in that case, not some random one
+		 */
+		if (_res.nsort && haveanswer > 1 &&
+		    qclass == C_IN && qtype == T_A)
+			addrsort(h_addr_ptrs, haveanswer);
+# endif /*RESOLVSORT*/
+		if (!host.h_name) {
+			n = strlen(qname) + 1;	/* for the \0 */
+			strcpy(bp, qname);
+			host.h_name = bp;
+		}
+		h_errno = NETDB_SUCCESS;
+		return (&host);
+	} else {
+		h_errno = TRY_AGAIN;
+		return (NULL);
+	}
+}
+
+struct hostent *
+_gethostbydnsname(name)
+	const char *name;
+{
+	querybuf buf;
+	register const char *cp;
+	int n;
+
+	if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
+		h_errno = NETDB_INTERNAL;
+		return (NULL);
+	}
+
+	/*
+	 * if there aren't any dots, it could be a user-level alias.
+	 * this is also done in res_query() since we are not the only
+	 * function that looks up host names.
+	 */
+	if (!strchr(name, '.') && (cp = __hostalias(name)))
+		name = cp;
+
+	/*
+	 * disallow names consisting only of digits/dots, unless
+	 * they end in a dot.
+	 */
+	if (isdigit(name[0]))
+		for (cp = name;; ++cp) {
+			if (!*cp) {
+				if (*--cp == '.')
+					break;
+				/*
+				 * All-numeric, no dot at the end.
+				 * Fake up a hostent as if we'd actually
+				 * done a lookup.
+				 */
+				if (!inet_aton(name, &host_addr)) {
+					h_errno = HOST_NOT_FOUND;
+					return (NULL);
+				}
+				strncpy(hostbuf, name, MAXDNAME);
+				hostbuf[MAXDNAME] = '\0';
+				host.h_name = hostbuf;
+				host.h_aliases = host_aliases;
+				host_aliases[0] = NULL;
+				host.h_addrtype = AF_INET;
+				host.h_length = INT32SZ;
+				h_addr_ptrs[0] = (char *)&host_addr;
+				h_addr_ptrs[1] = NULL;
+				host.h_addr_list = h_addr_ptrs;
+				return (&host);
+			}
+			if (!isdigit(*cp) && *cp != '.')
+				break;
+		}
+
+	if ((n = res_search(name, C_IN, T_A, buf.buf, sizeof(buf))) < 0) {
+		dprintf("res_search failed (%d)\n", n);
+		return (NULL);
+	}
+	return (gethostanswer(&buf, n, name, C_IN, T_A));
+}
+
+struct hostent *
+_gethostbydnsaddr(addr, len, type)
+	const char *addr;
+	int len, type;
+{
+	int n;
+	querybuf buf;
+	register struct hostent *hp;
+	char qbuf[MAXDNAME+1];
+#ifdef SUNSECURITY
+	register struct hostent *rhp;
+	char **haddr;
+	u_long old_options;
+	char hname2[MAXDNAME+1];
+#endif /*SUNSECURITY*/
+
+	if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
+		h_errno = NETDB_INTERNAL;
+		return (NULL);
+	}
+	if (type != AF_INET) {
+		errno = EAFNOSUPPORT;
+		h_errno = NETDB_INTERNAL;
+		return (NULL);
+	}
+	(void)sprintf(qbuf, "%u.%u.%u.%u.in-addr.arpa",
+		((unsigned)addr[3] & 0xff),
+		((unsigned)addr[2] & 0xff),
+		((unsigned)addr[1] & 0xff),
+		((unsigned)addr[0] & 0xff));
+	n = res_query(qbuf, C_IN, T_PTR, (u_char *)buf.buf, sizeof buf.buf);
+	if (n < 0) {
+		dprintf("res_query failed (%d)\n", n);
+		return (NULL);
+	}
+	if (!(hp = gethostanswer(&buf, n, qbuf, C_IN, T_PTR)))
+		return (NULL);	/* h_errno was set by gethostanswer() */
+#ifdef SUNSECURITY
+	/*
+	 * turn off search as the name should be absolute,
+	 * 'localhost' should be matched by defnames
+	 */
+	strncpy(hname2, hp->h_name, MAXDNAME);
+	hname2[MAXDNAME] = '\0';
+	old_options = _res.options;
+	_res.options &= ~RES_DNSRCH;
+	_res.options |= RES_DEFNAMES;
+	if (!(rhp = gethostbyname(hname2))) {
+		syslog(LOG_NOTICE|LOG_AUTH,
+		       "gethostbyaddr: No A record for %s (verifying [%s])",
+		       hname2, inet_ntoa(*((struct in_addr *)addr)));
+		_res.options = old_options;
+		h_errno = HOST_NOT_FOUND;
+		return (NULL);
+	}
+	_res.options = old_options;
+	for (haddr = rhp->h_addr_list; *haddr; haddr++)
+		if (!memcmp(*haddr, addr, INADDRSZ))
+			break;
+	if (!*haddr) {
+		syslog(LOG_NOTICE|LOG_AUTH,
+		       "gethostbyaddr: A record of %s != PTR record [%s]",
+		       hname2, inet_ntoa(*((struct in_addr *)addr)));
+		h_errno = HOST_NOT_FOUND;
+		return (NULL);
+	}
+#endif /*SUNSECURITY*/
+	hp->h_addrtype = type;
+	hp->h_length = len;
+	h_addr_ptrs[0] = (char *)&host_addr;
+	h_addr_ptrs[1] = NULL;
+	host_addr = *(struct in_addr *)addr;
+	h_errno = NETDB_SUCCESS;
+	return (hp);
+}
+
+void
+_sethostdnsent(stayopen)
+	int stayopen;
+{
+	if (stayopen)
+		_res.options |= RES_STAYOPEN | RES_USEVC;
+}
+
+void
+_endhostdnsent()
+{
+	_res.options &= ~(RES_STAYOPEN | RES_USEVC);
+	_res_close();
+}
diff --git a/lib/libc/net/gethostbyht.c b/lib/libc/net/gethostbyht.c
new file mode 100644
index 0000000..4b616cd
--- /dev/null
+++ b/lib/libc/net/gethostbyht.c
@@ -0,0 +1,182 @@
+/*-
+ * Copyright (c) 1985, 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * -
+ * Portions Copyright (c) 1993 by Digital Equipment Corporation.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies, and that
+ * the name of Digital Equipment Corporation not be used in advertising or
+ * publicity pertaining to distribution of the document or software without
+ * specific, written prior permission.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
+ * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ * -
+ * --Copyright--
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)gethostnamadr.c	8.1 (Berkeley) 6/4/93";
+static char rcsid[] = "$Id: gethostbyht.c,v 1.1 1994/09/25 02:12:11 pst Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+
+#define	MAXALIASES	35
+#define	MAXADDRS	35
+
+static struct hostent host;
+static char *host_aliases[MAXALIASES];
+static char hostbuf[BUFSIZ+1];
+static FILE *hostf = NULL;
+static char hostaddr[MAXADDRS];
+static char *host_addrs[2];
+static int stayopen = 0;
+
+void
+_sethosthtent(f)
+	int f;
+{
+	if (hostf == NULL)
+		hostf = fopen(_PATH_HOSTS, "r" );
+	else
+		rewind(hostf);
+	stayopen |= f;
+}
+
+void
+_endhosthtent()
+{
+	if (hostf && !stayopen) {
+		(void) fclose(hostf);
+		hostf = NULL;
+	}
+}
+
+struct hostent *
+gethostent()
+{
+	char *p;
+	register char *cp, **q;
+
+	if (hostf == NULL && (hostf = fopen(_PATH_HOSTS, "r" )) == NULL)
+		return (NULL);
+again:
+	if ((p = fgets(hostbuf, BUFSIZ, hostf)) == NULL)
+		return (NULL);
+	if (*p == '#')
+		goto again;
+	cp = strpbrk(p, "#\n");
+	if (cp == NULL)
+		goto again;
+	*cp = '\0';
+	cp = strpbrk(p, " \t");
+	if (cp == NULL)
+		goto again;
+	*cp++ = '\0';
+	/* THIS STUFF IS INTERNET SPECIFIC */
+	host.h_addr_list = host_addrs;
+	host.h_addr = hostaddr;
+	*((u_int32_t *)host.h_addr) = inet_addr(p);
+	host.h_length = sizeof (u_int32_t);
+	host.h_addrtype = AF_INET;
+	while (*cp == ' ' || *cp == '\t')
+		cp++;
+	host.h_name = cp;
+	q = host.h_aliases = host_aliases;
+	cp = strpbrk(cp, " \t");
+	if (cp != NULL)
+		*cp++ = '\0';
+	while (cp && *cp) {
+		if (*cp == ' ' || *cp == '\t') {
+			cp++;
+			continue;
+		}
+		if (q < &host_aliases[MAXALIASES - 1])
+			*q++ = cp;
+		cp = strpbrk(cp, " \t");
+		if (cp != NULL)
+			*cp++ = '\0';
+	}
+	*q = NULL;
+	return (&host);
+}
+
+struct hostent *
+_gethostbyhtname(name)
+	char *name;
+{
+	register struct hostent *p;
+	register char **cp;
+
+	sethostent(0);
+	while ((p = gethostent())) {
+		if (strcasecmp(p->h_name, name) == 0)
+			break;
+		for (cp = p->h_aliases; *cp != 0; cp++)
+			if (strcasecmp(*cp, name) == 0)
+				goto found;
+	}
+found:
+	endhostent();
+	return (p);
+}
+
+struct hostent *
+_gethostbyhtaddr(addr, len, type)
+	const char *addr;
+	int len, type;
+{
+	register struct hostent *p;
+
+	sethostent(0);
+	while ((p = gethostent()))
+		if (p->h_addrtype == type && !bcmp(p->h_addr, addr, len))
+			break;
+	endhostent();
+	return (p);
+}
diff --git a/lib/libc/net/gethostbyname.3 b/lib/libc/net/gethostbyname.3
new file mode 100644
index 0000000..702a116
--- /dev/null
+++ b/lib/libc/net/gethostbyname.3
@@ -0,0 +1,249 @@
+.\" Copyright (c) 1983, 1987, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)gethostbyname.3	8.2 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt GETHOSTBYNAME 3
+.Os BSD 4.2
+.Sh NAME
+.Nm gethostbyname ,
+.Nm gethostbyaddr ,
+.Nm gethostent ,
+.Nm sethostent ,
+.Nm endhostent ,
+.Nm herror
+.Nd get network host entry
+.Sh SYNOPSIS
+.Fd #include <netdb.h>
+.Fd extern struct h_errno;
+.Ft struct hostent *
+.Fn gethostbyname "char *name"
+.Ft struct hostent *
+.Fn gethostbyaddr "char *addr" "int len" "int type"
+.Ft struct hostent *
+.Fn gethostent void
+.Fn sethostent "int stayopen"
+.Fn endhostent void
+.Fn herror "char *string"
+.Sh DESCRIPTION
+The
+.Fn gethostbyname
+and
+.Fn gethostbyaddr
+functions
+each return a pointer to an object with the
+following structure describing an internet host
+referenced by name or by address, respectively.
+This structure contains either the information obtained from the name server,
+.Xr named 8 ,
+or broken-out fields from a line in 
+.Pa /etc/hosts .
+If the local name server is not running these routines do a lookup in
+.Pa /etc/hosts .
+.Bd -literal
+struct	hostent {
+	char	*h_name;	/* official name of host */
+	char	**h_aliases;	/* alias list */
+	int	h_addrtype;	/* host address type */
+	int	h_length;	/* length of address */
+	char	**h_addr_list;	/* list of addresses from name server */
+};
+#define	h_addr  h_addr_list[0]	/* address, for backward compatibility */
+.Ed
+.Pp
+The members of this structure are:
+.Bl -tag -width h_addr_list
+.It Fa h_name
+Official name of the host.
+.It Fa h_aliases
+A zero terminated array of alternate names for the host.
+.It Fa h_addrtype
+The type of address being returned; currently always
+.Dv AF_INET .
+.It Fa h_length
+The length, in bytes, of the address.
+.It Fa h_addr_list
+A zero terminated array of network addresses for the host.
+Host addresses are returned in network byte order.
+.It Fa h_addr
+The first address in
+.Fa h_addr_list ;
+this is for backward compatibility.
+.Pp
+When using the nameserver,
+.Fn gethostbyname
+will search for the named host in the current domain and its parents
+unless the name ends in a dot.
+If the name contains no dot, and if the environment variable
+.Dq Ev HOSTALIASES
+contains the name of an alias file, the alias file will first be searched
+for an alias matching the input name.
+See
+.Xr hostname 7
+for the domain search procedure and the alias file format.
+.Pp
+The
+.Fn sethostent
+function
+may be used to request the use of a connected
+.Tn TCP
+socket for queries.
+If the
+.Fa stayopen
+flag is non-zero,
+this sets the option to send all queries to the name server using
+.Tn TCP
+and to retain the connection after each call to 
+.Fn gethostbyname
+or
+.Fn gethostbyaddr .
+Otherwise, queries are performed using
+.Tn UDP
+datagrams.
+.Pp
+The
+.Fn endhostent
+function
+closes the
+.Tn TCP
+connection.
+.Sh FILES
+.Bl -tag -width /etc/hosts -compact
+.It Pa /etc/hosts
+.El
+.Sh DIAGNOSTICS
+Error return status from 
+.Fn gethostbyname
+and
+.Fn gethostbyaddr
+is indicated by return of a null pointer.
+The external integer
+.Va h_errno
+may then be checked to see whether this is a temporary failure
+or an invalid or unknown host.
+The routine
+.Fn herror
+can be used to print an error message describing the failure.
+If its argument
+.Fa string
+is
+.Pf non Dv -NULL ,
+it is printed, followed by a colon and a space.
+The error message is printed with a trailing newline.
+.Pp
+The variable
+.Va h_errno
+can have the following values:
+.Bl -tag -width HOST_NOT_FOUND
+.It Dv HOST_NOT_FOUND
+No such host is known.
+.It Dv TRY_AGAIN
+This is usually a temporary error
+and means that the local server did not receive
+a response from an authoritative server.
+A retry at some later time may succeed.
+.It Dv NO_RECOVERY
+Some unexpected server failure was encountered.
+This is a non-recoverable error.
+.It Dv NO_DATA
+The requested name is valid but does not have an IP address; 
+this is not a temporary error.  
+This means that the name is known to the name server but there is no address
+associated with this name.
+Another type of request to the name server using this domain name
+will result in an answer;
+for example, a mail-forwarder may be registered for this domain.
+.El
+.Sh SEE ALSO
+.Xr resolver 3 ,
+.Xr hosts 5 ,
+.Xr hostname 7 ,
+.Xr named 8
+.Sh CAVEAT
+The
+.Fn gethostent
+function
+is defined, and
+.Fn sethostent
+and
+.Fn endhostent
+are redefined,
+when
+.Xr libc 3
+is built to use only the routines to lookup in
+.Pa /etc/hosts
+and not the name server.
+.Pp
+The
+.Fn gethostent
+function
+reads the next line of
+.Pa /etc/hosts ,
+opening the file if necessary.
+.Pp
+The
+.Fn sethostent
+function
+opens and/or rewinds the file
+.Pa /etc/hosts .
+If the
+.Fa stayopen
+argument is non-zero,
+the file will not be closed after each call to
+.Fn gethostbyname
+or
+.Fn gethostbyaddr .
+.Pp
+The
+.Fn endhostent
+function
+closes the file.
+.Sh HISTORY
+The
+.Fn herror
+function appeared in 
+.Bx 4.3 .
+The
+.Fn endhostent ,
+.Fn gethostbyaddr ,
+.Fn gethostbyname ,
+.Fn gethostent ,
+and
+.Fn sethostent
+functions appeared in
+.Bx 4.2 .
+.Sh BUGS
+These functions use static data storage;
+if the data is needed for future use, it should be
+copied before any subsequent calls overwrite it.
+Only the Internet
+address format is currently understood.
diff --git a/lib/libc/net/gethostbynis.c b/lib/libc/net/gethostbynis.c
new file mode 100644
index 0000000..53b426d
--- /dev/null
+++ b/lib/libc/net/gethostbynis.c
@@ -0,0 +1,115 @@
+/*-
+ * Copyright (c) 1994, Garrett Wollman
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)$Id$";
+static char rcsid[] = "$Id$";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+
+#define	MAXALIASES	35
+#define	MAXADDRS	35
+
+#ifdef YP
+static char *host_aliases[MAXALIASES];
+static char hostaddr[MAXADDRS];
+static char *host_addrs[2];
+#endif /* YP */
+
+static struct hostent *
+_gethostbynis(name, map)
+	char *name, *map;
+{
+#ifdef YP
+	register char *cp, **q;
+	char *result;
+	int resultlen;
+	static struct hostent h;
+	static char *domain = (char *)NULL;
+
+	if (domain == (char *)NULL)
+		if (yp_get_default_domain (&domain))
+			return ((struct hostent *)NULL);
+
+	if (yp_match(domain, map, name, strlen(name), &result, &resultlen))
+		return ((struct hostent *)NULL);
+
+	if ((cp = index(result, '\n')))
+		*cp = '\0';
+
+	cp = strpbrk(result, " \t");
+	*cp++ = '\0';
+	h.h_addr_list = host_addrs;
+	h.h_addr = hostaddr;
+	*((u_long *)h.h_addr) = inet_addr(result);
+	h.h_length = sizeof(u_long);
+	h.h_addrtype = AF_INET;
+	while (*cp == ' ' || *cp == '\t')
+		cp++;
+	h.h_name = cp;
+	q = h.h_aliases = host_aliases;
+	cp = strpbrk(cp, " \t");
+	if (cp != NULL)
+		*cp++ = '\0';
+	while (cp && *cp) {
+		if (*cp == ' ' || *cp == '\t') {
+			cp++;
+			continue;
+		}
+		if (q < &host_aliases[MAXALIASES - 1])
+			*q++ = cp;
+		cp = strpbrk(cp, " \t");
+		if (cp != NULL)
+			*cp++ = '\0';
+	}
+	*q = NULL;
+	return (&h);
+#else
+	return (NULL);
+#endif /* YP */
+}
+
+struct hostent *
+_gethostbynisname(name)
+	char *name;
+{
+	return _gethostbynis(name, "hosts.byname");
+}
+
+struct hostent *
+_gethostbynisaddr(name)
+	char *name;
+{
+	return _gethostbynis(name, "hosts.byaddr");
+}
diff --git a/lib/libc/net/gethostnamadr.c b/lib/libc/net/gethostnamadr.c
new file mode 100644
index 0000000..54f78d0
--- /dev/null
+++ b/lib/libc/net/gethostnamadr.c
@@ -0,0 +1,195 @@
+/*-
+ * Copyright (c) 1994, Garrett Wollman
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)$Id: gethostnamadr.c,v 1.6 1995/03/24 15:38:54 ache Exp $";
+static char rcsid[] = "$Id: gethostnamadr.c,v 1.6 1995/03/24 15:38:54 ache Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+
+extern struct hostent * _gethostbyhtname  __P((const char *));
+extern struct hostent * _gethostbydnsname __P((const char *));
+extern struct hostent * _gethostbynisname __P((const char *));
+extern struct hostent * _gethostbyhtaddr  __P((const char *, int, int));
+extern struct hostent * _gethostbydnsaddr __P((const char *, int, int));
+extern struct hostent * _gethostbynisaddr __P((const char *, int, int));
+
+#define _PATH_HOSTCONF	"/etc/host.conf"
+
+enum service_type {
+  SERVICE_NONE = 0,
+  SERVICE_BIND,
+  SERVICE_HOSTS,
+  SERVICE_NIS };
+#define SERVICE_MAX	SERVICE_NIS
+
+static struct {
+  const char *name;
+  enum service_type type;
+} service_names[] = {
+  { "hosts", SERVICE_HOSTS },
+  { "/etc/hosts", SERVICE_HOSTS },
+  { "hosttable", SERVICE_HOSTS },
+  { "htable", SERVICE_HOSTS },
+  { "bind", SERVICE_BIND },
+  { "dns", SERVICE_BIND },
+  { "domain", SERVICE_BIND },
+  { "yp", SERVICE_NIS },
+  { "yellowpages", SERVICE_NIS },
+  { "nis", SERVICE_NIS },
+  { 0, SERVICE_NONE }
+};
+
+static enum service_type service_order[SERVICE_MAX + 1];
+static int service_done = 0;
+
+static enum service_type
+get_service_name(const char *name) {
+	int i;
+	for(i = 0; service_names[i].type != SERVICE_NONE; i++) {
+		if(!strcasecmp(name, service_names[i].name)) {
+			return service_names[i].type;
+		}
+	}
+	return SERVICE_NONE;
+}
+
+static void
+init_services()
+{
+	char *cp, *p, buf[BUFSIZ];
+	register int cc = 0;
+	FILE *fd;
+
+	if ((fd = (FILE *)fopen(_PATH_HOSTCONF, "r")) == NULL) {
+				/* make some assumptions */
+		service_order[0] = SERVICE_BIND;
+		service_order[1] = SERVICE_HOSTS;
+		service_order[2] = SERVICE_NONE;
+	} else {
+		while (fgets(buf, BUFSIZ, fd) != NULL && cc < SERVICE_MAX) {
+			if(buf[0] == '#')
+				continue;
+
+			p = buf;
+			while ((cp = strsep(&p, "\n \t,:;")) != NULL && *cp == '\0')
+				;
+			if (cp == NULL)
+				continue;
+			do {
+				if (isalpha(cp[0])) {
+					service_order[cc] = get_service_name(cp);
+					if(service_order[cc] != SERVICE_NONE)
+						cc++;
+				}
+				while ((cp = strsep(&p, "\n \t,:;")) != NULL && *cp == '\0')
+					;
+			} while(cp != NULL && cc < SERVICE_MAX);
+		}
+		service_order[cc] = SERVICE_NONE;
+		fclose(fd);
+	}
+	service_done = 1;
+}
+
+struct hostent *
+gethostbyname(const char *name)
+{
+	struct hostent *hp = 0;
+	int nserv = 0;
+
+	if (!service_done)
+		init_services();
+
+	while (!hp) {
+		switch (service_order[nserv]) {
+		      case SERVICE_NONE:
+			return NULL;
+		      case SERVICE_HOSTS:
+			hp = _gethostbyhtname(name);
+			break;
+		      case SERVICE_BIND:
+			hp = _gethostbydnsname(name);
+			break;
+		      case SERVICE_NIS:
+			hp = _gethostbynisname(name);
+			break;
+		}
+		nserv++;
+	}
+	return hp;
+}
+
+struct hostent *
+gethostbyaddr(const char *addr, int len, int type)
+{
+	struct hostent *hp = 0;
+	int nserv = 0;
+
+	if (!service_done)
+		init_services();
+
+	while (!hp) {
+		switch (service_order[nserv]) {
+		      case SERVICE_NONE:
+			return 0;
+		      case SERVICE_HOSTS:
+			hp = _gethostbyhtaddr(addr, len, type);
+			break;
+		      case SERVICE_BIND:
+			hp = _gethostbydnsaddr(addr, len, type);
+			break;
+		      case SERVICE_NIS:
+			hp = _gethostbynisaddr(addr, len, type);
+			break;
+		}
+		nserv++;
+	}
+	return hp;
+}
+
+void
+sethostent(stayopen)
+	int stayopen;
+{
+	_sethosthtent(stayopen);
+	_sethostdnsent(stayopen);
+}
+
+void
+endhostent()
+{
+	_endhosthtent();
+	_endhostdnsent();
+}
diff --git a/lib/libc/net/getnetbyaddr.c b/lib/libc/net/getnetbyaddr.c
new file mode 100644
index 0000000..fd3f260
--- /dev/null
+++ b/lib/libc/net/getnetbyaddr.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getnetbyaddr.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <netdb.h>
+
+extern int _net_stayopen;
+
+struct netent *
+getnetbyaddr(net, type)
+	register long net;
+	register int type;
+{
+	register struct netent *p;
+
+	setnetent(_net_stayopen);
+	while (p = getnetent())
+		if (p->n_addrtype == type && p->n_net == net)
+			break;
+	if (!_net_stayopen)
+		endnetent();
+	return (p);
+}
diff --git a/lib/libc/net/getnetbydns.c b/lib/libc/net/getnetbydns.c
new file mode 100644
index 0000000..440ebf8
--- /dev/null
+++ b/lib/libc/net/getnetbydns.c
@@ -0,0 +1,305 @@
+/*-
+ * Copyright (c) 1985, 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * -
+ * Portions Copyright (c) 1993 by Digital Equipment Corporation.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies, and that
+ * the name of Digital Equipment Corporation not be used in advertising or
+ * publicity pertaining to distribution of the document or software without
+ * specific, written prior permission.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
+ * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ * -
+ * --Copyright--
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)gethostnamadr.c	8.1 (Berkeley) 6/4/93";
+static char rcsid[] = "$Id: getnetbydns.c,v 1.3 1995/05/30 05:40:46 rgrimes Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+#include <netdb.h>
+#include <resolv.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <syslog.h>
+
+#define	BYNAME		0
+#define	BYADDR		1
+
+#define	MAXALIASES	35
+#define	MAXADDRS	35
+
+#if PACKETSZ > 1024
+#define	MAXPACKET	PACKETSZ
+#else
+#define	MAXPACKET	1024
+#endif
+
+typedef union {
+    HEADER hdr;
+    u_char buf[MAXPACKET];
+} querybuf;
+
+typedef union {
+    int32_t al;
+    char ac;
+} align;
+
+extern int h_errno;
+
+static struct netent *
+getnetanswer(answer, anslen, net_i)
+	querybuf *answer;
+	int anslen;
+	int net_i;
+{
+
+	register HEADER	*hp;
+	register u_char	*cp;
+	register int	n;
+	u_char		*eom;
+	int		type, class, buflen, ancount, qdcount,
+			haveanswer, i, nchar;
+	char		aux1[30], aux2[30], ans[30],
+			*in, *st, *pauxt, *bp, **ap,
+			*paux1 = &aux1[0],
+			*paux2 = &aux2[0],
+			flag = 0;
+static	struct netent	net_entry;
+static	char		*net_aliases[MAXALIASES],
+			netbuf[BUFSIZ+1];
+
+	/*
+	 * find first satisfactory answer
+	 *
+	 *      answer --> +------------+  ( MESSAGE )
+	 *		   |   Header   |
+	 *		   +------------+
+	 *		   |  Question  | the question for the name server
+	 *		   +------------+
+	 *		   |   Answer   | RRs answering the question
+	 *		   +------------+
+	 *		   | Authority  | RRs pointing toward an authority
+	 *		   | Additional | RRs holding additional information
+	 *		   +------------+
+	 */
+	eom = answer->buf + anslen;
+	hp = &answer->hdr;
+	ancount = ntohs(hp->ancount); /* #/records in the answer section */
+	qdcount = ntohs(hp->qdcount); /* #/entries in the question section */
+	bp = netbuf;
+	buflen = sizeof(netbuf);
+	cp = answer->buf + HFIXEDSZ;
+	if (!qdcount) {
+		if (hp->aa)
+			h_errno = HOST_NOT_FOUND;
+		else
+			h_errno = TRY_AGAIN;
+
+		return ((struct netent *) NULL);
+	}
+	while (qdcount-- > 0){
+		cp += __dn_skipname(cp, eom) + QFIXEDSZ;
+        }
+	ap = net_aliases;
+	*ap = NULL;
+	net_entry.n_aliases = net_aliases;
+	haveanswer = 0;
+	while (--ancount >= 0 && cp < eom) {
+		n = dn_expand(answer->buf, eom, cp, bp, buflen);
+		if (n < 0)
+			break;
+		cp += n;
+		ans[0] = '\0';
+		(void)strcpy(&ans[0], bp);
+		GETSHORT(type, cp);
+		GETSHORT(class, cp);
+		cp += INT32SZ;		/* TTL */
+		GETSHORT(n, cp);
+		if (class == C_IN && type == T_PTR) {
+			n = dn_expand(answer->buf, eom, cp, bp, buflen);
+			if (n < 0) {
+				cp += n;
+				return (NULL);
+			}
+			cp += n;
+			*ap++ = bp;
+			bp += (strlen(bp) + 1);
+			net_entry.n_addrtype = (class == C_IN)
+						? AF_INET
+						: AF_UNSPEC;
+			haveanswer++;
+		}
+	}
+	if (haveanswer) {
+		*ap = NULL;
+		switch (net_i) {
+		   case BYADDR :
+			net_entry.n_name = *net_entry.n_aliases;
+			net_entry.n_net = 0L;
+			break;
+		   case BYNAME :
+			in = *net_entry.n_aliases;
+			net_entry.n_name = &ans[0];
+			aux2[0] = '\0';
+			for (i = 0;  i < 4;  i++) {
+				for (st = in, nchar = 0;
+				     *st != '.';
+				     st++, nchar++)
+					;
+				if (nchar != 1 || *in != '0' || flag) {
+					flag = 1;
+					(void)strncpy(paux1,
+						      (i==0) ?in :in-1,
+						      (i==0) ?nchar :nchar+1);
+					paux1[(i==0) ?nchar :nchar+1] = '\0';
+					pauxt = paux2;
+					paux2 = strcat(paux1, paux2);
+					paux1 = pauxt;
+				}
+				in = ++st;
+			}
+			net_entry.n_net = inet_network(paux2);
+		}
+		net_entry.n_aliases++;
+		return (&net_entry);
+	} else {
+		h_errno = TRY_AGAIN;
+		return ((struct netent *) NULL);
+	}
+}
+
+struct netent *
+_getnetbydnsaddr(net, net_type)
+	register long net;
+	register int net_type;
+{
+	unsigned int	netbr[4];
+	int		nn, anslen;
+	querybuf	buf;
+	char		qbuf[MAXDNAME];
+	unsigned long	net2;
+	struct netent	*net_entry;
+
+	if (net_type != AF_INET)
+		return (NULL);
+
+	for (nn = 4, net2 = net;  net2;  net2 >>= 8) {
+		netbr[--nn] = net2 & 0xff;
+	}
+	switch (nn) {
+		case 3: 	/* Class A */
+			(void)sprintf(qbuf, "0.0.0.%u.in-addr.arpa",
+				      netbr[3]);
+			break;
+		case 2: 	/* Class B */
+			(void)sprintf(qbuf, "0.0.%u.%u.in-addr.arpa",
+				      netbr[3], netbr[2]);
+			break;
+		case 1: 	/* Class C */
+			(void)sprintf(qbuf, "0.%u.%u.%u.in-addr.arpa",
+				      netbr[3], netbr[2], netbr[1]);
+			break;
+		case 0: 	/* Class D - E */
+			(void)sprintf(qbuf, "%u.%u.%u.%u.in-addr.arpa",
+				      netbr[3], netbr[2], netbr[1], netbr[0]);
+			break;
+	}
+	anslen = res_query(qbuf, C_IN, T_PTR, buf.buf, sizeof buf.buf);
+	if (anslen < 0) {
+		if (_res.options & RES_DEBUG)
+			printf("res_query failed\n");
+		return (NULL);
+	}
+	net_entry = getnetanswer(&buf, anslen, BYADDR);
+	if (net_entry) {
+		unsigned u_net = net;	/* maybe net should be unsigned ? */
+
+		/* Strip trailing zeros */
+		while ((u_net & 0xff) == 0 && u_net != 0) {
+			u_net >>= 8;
+		}
+		net_entry->n_net = u_net;
+	}
+	return (net_entry);
+}
+
+struct netent *
+_getnetbydnsname(net)
+	register const char *net;
+{
+	int		anslen;
+	querybuf	buf;
+	char		qbuf[MAXDNAME];
+
+	(void)strcpy(&qbuf[0],net);
+	anslen = res_search(qbuf, C_IN, T_PTR, buf.buf, sizeof buf.buf);
+	if (anslen < 0) {
+		if (_res.options & RES_DEBUG)
+			printf("res_query failed\n");
+		return NULL;
+	}
+	return getnetanswer(&buf, anslen, BYNAME);
+}
+
+void
+_setnetdnsent(stayopen)
+	int stayopen;
+{
+	if (stayopen)
+		_res.options |= RES_STAYOPEN | RES_USEVC;
+}
+
+void
+_endnetdnsent()
+{
+	_res.options &= ~(RES_STAYOPEN | RES_USEVC);
+	_res_close();
+}
diff --git a/lib/libc/net/getnetbyht.c b/lib/libc/net/getnetbyht.c
new file mode 100644
index 0000000..4f6439c
--- /dev/null
+++ b/lib/libc/net/getnetbyht.c
@@ -0,0 +1,159 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getnetent.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <string.h>
+
+#define	MAXALIASES	35
+
+static FILE *netf;
+static char line[BUFSIZ+1];
+static struct netent net;
+static char *net_aliases[MAXALIASES];
+static int _net_stayopen;
+
+void
+_setnethtent(f)
+	int f;
+{
+	if (netf == NULL)
+		netf = fopen(_PATH_NETWORKS, "r" );
+	else
+		rewind(netf);
+	_net_stayopen |= f;
+}
+
+void
+_endnethtent()
+{
+	if (netf) {
+		fclose(netf);
+		netf = NULL;
+	}
+	_net_stayopen = 0;
+}
+
+struct netent *
+getnetent()
+{
+	char *p;
+	register char *cp, **q;
+
+	if (netf == NULL && (netf = fopen(_PATH_NETWORKS, "r" )) == NULL)
+		return (NULL);
+again:
+	p = fgets(line, BUFSIZ, netf);
+	if (p == NULL)
+		return (NULL);
+	if (*p == '#')
+		goto again;
+	cp = strpbrk(p, "#\n");
+	if (cp == NULL)
+		goto again;
+	*cp = '\0';
+	net.n_name = p;
+	cp = strpbrk(p, " \t");
+	if (cp == NULL)
+		goto again;
+	*cp++ = '\0';
+	while (*cp == ' ' || *cp == '\t')
+		cp++;
+	p = strpbrk(cp, " \t");
+	if (p != NULL)
+		*p++ = '\0';
+	net.n_net = inet_network(cp);
+	net.n_addrtype = AF_INET;
+	q = net.n_aliases = net_aliases;
+	if (p != NULL)
+		cp = p;
+	while (cp && *cp) {
+		if (*cp == ' ' || *cp == '\t') {
+			cp++;
+			continue;
+		}
+		if (q < &net_aliases[MAXALIASES - 1])
+			*q++ = cp;
+		cp = strpbrk(cp, " \t");
+		if (cp != NULL)
+			*cp++ = '\0';
+	}
+	*q = NULL;
+	return (&net);
+}
+
+struct netent *
+_getnetbyhtname(name)
+	register const char *name;
+{
+	register struct netent *p;
+	register char **cp;
+
+	setnetent(_net_stayopen);
+	while ((p = getnetent())) {
+		if (strcasecmp(p->n_name, name) == 0)
+			break;
+		for (cp = p->n_aliases; *cp != 0; cp++)
+			if (strcasecmp(*cp, name) == 0)
+				goto found;
+	}
+found:
+	if (!_net_stayopen)
+		endnetent();
+	return (p);
+}
+
+
+struct netent *
+_getnetbyhtaddr(net, type)
+	register long net;
+	register int type;
+{
+	register struct netent *p;
+
+	setnetent(_net_stayopen);
+	while ((p = getnetent()))
+		if (p->n_addrtype == type && p->n_net == net)
+			break;
+	if (!_net_stayopen)
+		endnetent();
+	return (p);
+}
diff --git a/lib/libc/net/getnetbynis.c b/lib/libc/net/getnetbynis.c
new file mode 100644
index 0000000..d87ca0f
--- /dev/null
+++ b/lib/libc/net/getnetbynis.c
@@ -0,0 +1,134 @@
+/*-
+ * Copyright (c) 1994, Garrett Wollman
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)$Id: getnetbynis.c,v 1.3 1995/05/30 05:40:47 rgrimes Exp $";
+static char rcsid[] = "$Id: getnetbynis.c,v 1.3 1995/05/30 05:40:47 rgrimes Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+
+#define	MAXALIASES	35
+#define	MAXADDRS	35
+
+#ifdef YP
+static char *host_aliases[MAXALIASES];
+#endif /* YP */
+
+static struct netent *
+_getnetbynis(name, map)
+	char *name, *map;
+{
+#ifdef YP
+	register char *cp, **q;
+	static char *result;
+	int resultlen;
+	static struct netent h;
+	static char *domain = (char *)NULL;
+
+	if (domain == (char *)NULL)
+		if (yp_get_default_domain (&domain))
+			return (NULL);
+
+	if (result) {
+		free(result);
+		result = 0;
+	}
+
+	if (yp_match(domain, map, name, strlen(name), &result, &resultlen))
+		return (NULL);
+
+	if ((cp = index(result, '\n')))
+		*cp = '\0';
+
+	cp = strpbrk(result, " \t");
+	*cp++ = '\0';
+	h.n_name = result;
+
+	while (*cp == ' ' || *cp == '\t')
+		cp++;
+
+	h.n_net = inet_network(cp);
+	h.n_addrtype = AF_INET;
+
+	q = h.n_aliases = host_aliases;
+	cp = strpbrk(cp, " \t");
+	if (cp != NULL)
+		*cp++ = '\0';
+	while (cp && *cp) {
+		if (*cp == ' ' || *cp == '\t') {
+			cp++;
+			continue;
+		}
+		if (q < &host_aliases[MAXALIASES - 1])
+			*q++ = cp;
+		cp = strpbrk(cp, " \t");
+		if (cp != NULL)
+			*cp++ = '\0';
+	}
+	*q = NULL;
+	return (&h);
+#else
+	return (NULL);
+#endif
+}
+
+struct netent *
+_getnetbynisname(name)
+	char *name;
+{
+	return _getnetbynis(name, "networks.byname");
+}
+
+struct netent *
+_getnetbynisaddr(addr, type)
+	long addr;
+	int type;
+{
+	struct in_addr in;
+	char *str, *cp;
+
+	if (type != AF_INET)
+		return (NULL);
+
+	in.s_addr = addr;
+	str = inet_ntoa(in);
+	cp = str + strlen(str) - 2;
+	while(!strcmp(cp, ".0")) {
+		*cp = '\0';
+		cp = str + strlen(str) - 2;
+	}
+
+	return _getnetbynis(str, "networks.byaddr");
+}
diff --git a/lib/libc/net/getnetent.3 b/lib/libc/net/getnetent.3
new file mode 100644
index 0000000..7514371c
--- /dev/null
+++ b/lib/libc/net/getnetent.3
@@ -0,0 +1,151 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getnetent.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETNETENT 3
+.Os BSD 4.2
+.Sh NAME
+.Nm getnetent ,
+.Nm getnetbyaddr ,
+.Nm getnetbyname ,
+.Nm setnetent ,
+.Nm endnetent
+.Nd get network entry
+.Sh SYNOPSIS
+.Fd #include <netdb.h>
+.Ft struct netent *
+.Fn getnetent 
+.Ft struct netent *
+.Fn getnetbyname "char *name"
+.Ft struct netent *
+.Fn getnetbyaddr "long net" "int type"
+.Fn setnetent "int stayopen"
+.Fn endnetent 
+.Sh DESCRIPTION
+The
+.Fn getnetent ,
+.Fn getnetbyname ,
+and
+.Fn getnetbyaddr
+functions
+each return a pointer to an object with the
+following structure
+containing the broken-out
+fields of a line in the network data base,
+.Pa /etc/networks .
+.Bd -literal -offset indent
+struct	netent {
+	char		*n_name;	/* official name of net */
+	char		**n_aliases;	/* alias list */
+	int		n_addrtype;	/* net number type */
+	unsigned long	n_net;		/* net number */
+};
+.Ed
+.Pp
+The members of this structure are:
+.Bl -tag -width n_addrtype
+.It Fa n_name
+The official name of the network.
+.It Fa n_aliases
+A zero terminated list of alternate names for the network.
+.It Fa n_addrtype
+The type of the network number returned; currently only AF_INET.
+.It Fa n_net
+The network number.  Network numbers are returned in machine byte
+order.
+.El
+.Pp
+The
+.Fn getnetent
+function
+reads the next line of the file, opening the file if necessary.
+.Pp
+The
+.Fn setnetent
+function
+opens and rewinds the file.  If the
+.Fa stayopen
+flag is non-zero,
+the net data base will not be closed after each call to 
+.Fn getnetbyname
+or
+.Fn getnetbyaddr .
+.Pp
+The
+.Fn endnetent
+function
+closes the file.
+.Pp
+The
+.Fn getnetbyname
+function
+and
+.Fn getnetbyaddr
+sequentially search from the beginning
+of the file until a matching
+net name or
+net address and type is found,
+or until
+.Dv EOF
+is encountered.
+Network numbers are supplied in host order.
+.Sh FILES
+.Bl -tag -width /etc/networks -compact
+.It Pa /etc/networks
+.El
+.Sh DIAGNOSTICS
+Null pointer
+(0) returned on
+.Dv EOF
+or error.
+.Sh SEE ALSO
+.Xr networks 5
+.Sh HISTORY
+The
+.Fn getnetent ,
+.Fn getnetbyaddr ,
+.Fn getnetbyname ,
+.Fn setnetent ,
+and
+.Fn endnetent
+functions appeared in 
+.Bx 4.2 .
+.Sh BUGS
+The data space used by
+these functions is static; if future use requires the data, it should be
+copied before any subsequent calls to these functions overwrite it.
+Only Internet network
+numbers are currently understood.
+Expecting network numbers to fit
+in no more than 32 bits is probably
+naive.
diff --git a/lib/libc/net/getnetnamadr.c b/lib/libc/net/getnetnamadr.c
new file mode 100644
index 0000000..5d99c8f
--- /dev/null
+++ b/lib/libc/net/getnetnamadr.c
@@ -0,0 +1,198 @@
+/*-
+ * Copyright (c) 1994, Garrett Wollman
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)$Id: getnetnamadr.c,v 1.3 1995/03/24 15:51:30 ache Exp $";
+static char rcsid[] = "$Id: getnetnamadr.c,v 1.3 1995/03/24 15:51:30 ache Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+
+extern struct netent * _getnetbyhtname  __P((const char *));
+extern struct netent * _getnetbydnsname __P((const char *));
+extern struct netent * _getnetbynisname __P((const char *));
+extern struct netent * _getnetbyhtaddr  __P((long, int));
+extern struct netent * _getnetbydnsaddr __P((long, int));
+extern struct netent * _getnetbynisaddr __P((long, int));
+
+#ifndef _PATH_NETCONF
+#define _PATH_NETCONF	"/etc/host.conf"
+#endif
+
+enum service_type {
+  SERVICE_NONE = 0,
+  SERVICE_BIND,
+  SERVICE_TABLE,
+  SERVICE_NIS };
+#define SERVICE_MAX	SERVICE_NIS
+
+static struct {
+  const char *name;
+  enum service_type type;
+} service_names[] = {
+  { "hosts", SERVICE_TABLE },
+  { "/etc/hosts", SERVICE_TABLE },
+  { "hosttable", SERVICE_TABLE },
+  { "htable", SERVICE_TABLE },
+  { "bind", SERVICE_BIND },
+  { "dns", SERVICE_BIND },
+  { "domain", SERVICE_BIND },
+  { "yp", SERVICE_NIS },
+  { "yellowpages", SERVICE_NIS },
+  { "nis", SERVICE_NIS },
+  { 0, SERVICE_NONE }
+};
+
+static enum service_type service_order[SERVICE_MAX + 1];
+static int service_done = 0;
+
+static enum service_type
+get_service_name(const char *name) {
+	int i;
+	for(i = 0; service_names[i].type != SERVICE_NONE; i++) {
+		if(!strcasecmp(name, service_names[i].name)) {
+			return service_names[i].type;
+		}
+	}
+	return SERVICE_NONE;
+}
+
+static void
+init_services()
+{
+	char *cp, *p, buf[BUFSIZ];
+	register int cc = 0;
+	FILE *fd;
+
+	if ((fd = (FILE *)fopen(_PATH_NETCONF, "r")) == NULL) {
+				/* make some assumptions */
+		service_order[0] = SERVICE_TABLE;
+		service_order[1] = SERVICE_NONE;
+	} else {
+		while (fgets(buf, BUFSIZ, fd) != NULL && cc < SERVICE_MAX) {
+			if(buf[0] == '#')
+				continue;
+
+			p = buf;
+			while ((cp = strsep(&p, "\n \t,:;")) != NULL && *cp == '\0')
+				;
+			if (cp == NULL)
+				continue;
+			do {
+				if (isalpha(cp[0])) {
+					service_order[cc] = get_service_name(cp);
+					if(service_order[cc] != SERVICE_NONE)
+						cc++;
+				}
+				while ((cp = strsep(&p, "\n \t,:;")) != NULL && *cp == '\0')
+					;
+			} while(cp != NULL && cc < SERVICE_MAX);
+		}
+		service_order[cc] = SERVICE_NONE;
+		fclose(fd);
+	}
+	service_done = 1;
+}
+
+struct netent *
+getnetbyname(const char *name)
+{
+	struct netent *hp = 0;
+	int nserv = 0;
+
+	if (!service_done)
+		init_services();
+
+	while (!hp) {
+		switch (service_order[nserv]) {
+		      case SERVICE_NONE:
+			return NULL;
+		      case SERVICE_TABLE:
+			hp = _getnetbyhtname(name);
+			break;
+		      case SERVICE_BIND:
+			hp = _getnetbydnsname(name);
+			break;
+		      case SERVICE_NIS:
+			hp = _getnetbynisname(name);
+			break;
+		}
+		nserv++;
+	}
+	return hp;
+}
+
+struct netent *
+getnetbyaddr(addr, type)
+	long addr;
+	int type;
+{
+	struct netent *hp = 0;
+	int nserv = 0;
+
+	if (!service_done)
+		init_services();
+
+	while (!hp) {
+		switch (service_order[nserv]) {
+		      case SERVICE_NONE:
+			return 0;
+		      case SERVICE_TABLE:
+			hp = _getnetbyhtaddr(addr, type);
+			break;
+		      case SERVICE_BIND:
+			hp = _getnetbydnsaddr(addr, type);
+			break;
+		      case SERVICE_NIS:
+			hp = _getnetbynisaddr(addr, type);
+			break;
+		}
+		nserv++;
+	}
+	return hp;
+}
+
+void
+setnetent(stayopen)
+	int stayopen;
+{
+	_setnethtent(stayopen);
+	_setnetdnsent(stayopen);
+}
+
+void
+endnetent()
+{
+	_endnethtent();
+	_endnetdnsent();
+}
diff --git a/lib/libc/net/getproto.c b/lib/libc/net/getproto.c
new file mode 100644
index 0000000..92f562b
--- /dev/null
+++ b/lib/libc/net/getproto.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getproto.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <netdb.h>
+
+extern int _proto_stayopen;
+
+struct protoent *
+getprotobynumber(proto)
+	register int proto;
+{
+	register struct protoent *p;
+
+	setprotoent(_proto_stayopen);
+	while (p = getprotoent())
+		if (p->p_proto == proto)
+			break;
+	if (!_proto_stayopen)
+		endprotoent();
+	return (p);
+}
diff --git a/lib/libc/net/getprotoent.3 b/lib/libc/net/getprotoent.3
new file mode 100644
index 0000000..d5d610e
--- /dev/null
+++ b/lib/libc/net/getprotoent.3
@@ -0,0 +1,144 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getprotoent.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETPROTOENT 3
+.Os BSD 4.2
+.Sh NAME
+.Nm getprotoent ,
+.Nm getprotobynumber ,
+.Nm getprotobyname ,
+.Nm setprotoent ,
+.Nm endprotoent
+.Nd get protocol entry
+.Sh SYNOPSIS
+.Fd #include <netdb.h>
+.Ft struct protoent *
+.Fn getprotoent 
+.Ft struct protoent *
+.Fn getprotobyname "char *name"
+.Ft struct protoent *
+.Fn getprotobynumber "int proto"
+.Fn setprotoent "int stayopen"
+.Fn endprotoent 
+.Sh DESCRIPTION
+The
+.Fn getprotoent ,
+.Fn getprotobyname ,
+and
+.Fn getprotobynumber
+functions
+each return a pointer to an object with the
+following structure
+containing the broken-out
+fields of a line in the network protocol data base,
+.Pa /etc/protocols .
+.Bd -literal -offset indent
+.Pp
+struct	protoent {
+	char	*p_name;	/* official name of protocol */
+	char	**p_aliases;	/* alias list */
+	int	p_proto;	/* protocol number */
+};
+.Ed
+.Pp
+The members of this structure are:
+.Bl -tag -width p_aliases
+.It Fa p_name
+The official name of the protocol.
+.It Fa p_aliases
+A zero terminated list of alternate names for the protocol.
+.It Fa p_proto
+The protocol number.
+.El
+.Pp
+The
+.Fn getprotoent
+function
+reads the next line of the file, opening the file if necessary.
+.Pp
+The
+.Fn setprotoent
+function
+opens and rewinds the file.  If the
+.Fa stayopen
+flag is non-zero,
+the net data base will not be closed after each call to 
+.Fn getprotobyname
+or
+.Fn getprotobynumber .
+.Pp
+The
+.Fn endprotoent
+function
+closes the file.
+.Pp
+The
+.Fn getprotobyname
+function
+and
+.Fn getprotobynumber
+sequentially search from the beginning
+of the file until a matching
+protocol name or
+protocol number is found,
+or until
+.Dv EOF
+is encountered.
+.Sh RETURN VALUES
+Null pointer
+(0) returned on
+.Dv EOF
+or error.
+.Sh FILES
+.Bl -tag -width /etc/protocols -compact
+.It Pa /etc/protocols
+.El
+.Sh SEE ALSO
+.Xr protocols 5
+.Sh HISTORY
+The
+.Fn getprotoent ,
+.Fn getprotobynumber ,
+.Fn getprotobyname ,
+.Fn setprotoent ,
+and
+.Fn endprotoent
+functions appeared in 
+.Bx 4.2 .
+.Sh BUGS
+These functions use a static data space;
+if the data is needed for future use, it should be
+copied before any subsequent calls overwrite it.
+Only the Internet
+protocols are currently understood.
diff --git a/lib/libc/net/getprotoent.c b/lib/libc/net/getprotoent.c
new file mode 100644
index 0000000..c10ae33
--- /dev/null
+++ b/lib/libc/net/getprotoent.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getprotoent.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define	MAXALIASES	35
+
+static FILE *protof = NULL;
+static char line[BUFSIZ+1];
+static struct protoent proto;
+static char *proto_aliases[MAXALIASES];
+int _proto_stayopen;
+
+void
+setprotoent(f)
+	int f;
+{
+	if (protof == NULL)
+		protof = fopen(_PATH_PROTOCOLS, "r" );
+	else
+		rewind(protof);
+	_proto_stayopen |= f;
+}
+
+void
+endprotoent()
+{
+	if (protof) {
+		fclose(protof);
+		protof = NULL;
+	}
+	_proto_stayopen = 0;
+}
+
+struct protoent *
+getprotoent()
+{
+	char *p;
+	register char *cp, **q;
+
+	if (protof == NULL && (protof = fopen(_PATH_PROTOCOLS, "r" )) == NULL)
+		return (NULL);
+again:
+	if ((p = fgets(line, BUFSIZ, protof)) == NULL)
+		return (NULL);
+	if (*p == '#')
+		goto again;
+	cp = strpbrk(p, "#\n");
+	if (cp == NULL)
+		goto again;
+	*cp = '\0';
+	proto.p_name = p;
+	cp = strpbrk(p, " \t");
+	if (cp == NULL)
+		goto again;
+	*cp++ = '\0';
+	while (*cp == ' ' || *cp == '\t')
+		cp++;
+	p = strpbrk(cp, " \t");
+	if (p != NULL)
+		*p++ = '\0';
+	proto.p_proto = atoi(cp);
+	q = proto.p_aliases = proto_aliases;
+	if (p != NULL) {
+		cp = p;
+		while (cp && *cp) {
+			if (*cp == ' ' || *cp == '\t') {
+				cp++;
+				continue;
+			}
+			if (q < &proto_aliases[MAXALIASES - 1])
+				*q++ = cp;
+			cp = strpbrk(cp, " \t");
+			if (cp != NULL)
+				*cp++ = '\0';
+		}
+	}
+	*q = NULL;
+	return (&proto);
+}
diff --git a/lib/libc/net/getprotoname.c b/lib/libc/net/getprotoname.c
new file mode 100644
index 0000000..3ee6754
--- /dev/null
+++ b/lib/libc/net/getprotoname.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getprotoname.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <netdb.h>
+#include <string.h>
+
+extern int _proto_stayopen;
+
+struct protoent *
+getprotobyname(name)
+	register const char *name;
+{
+	register struct protoent *p;
+	register char **cp;
+
+	setprotoent(_proto_stayopen);
+	while (p = getprotoent()) {
+		if (strcmp(p->p_name, name) == 0)
+			break;
+		for (cp = p->p_aliases; *cp != 0; cp++)
+			if (strcmp(*cp, name) == 0)
+				goto found;
+	}
+found:
+	if (!_proto_stayopen)
+		endprotoent();
+	return (p);
+}
diff --git a/lib/libc/net/getservbyname.c b/lib/libc/net/getservbyname.c
new file mode 100644
index 0000000..77bf813
--- /dev/null
+++ b/lib/libc/net/getservbyname.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getservbyname.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <netdb.h>
+#include <string.h>
+
+extern int _serv_stayopen;
+
+struct servent *
+getservbyname(name, proto)
+	const char *name, *proto;
+{
+	register struct servent *p;
+	register char **cp;
+
+	setservent(_serv_stayopen);
+	while (p = getservent()) {
+		if (strcmp(name, p->s_name) == 0)
+			goto gotname;
+		for (cp = p->s_aliases; *cp; cp++)
+			if (strcmp(name, *cp) == 0)
+				goto gotname;
+		continue;
+gotname:
+		if (proto == 0 || strcmp(p->s_proto, proto) == 0)
+			break;
+	}
+	if (!_serv_stayopen)
+		endservent();
+	return (p);
+}
diff --git a/lib/libc/net/getservbyport.c b/lib/libc/net/getservbyport.c
new file mode 100644
index 0000000..0acb31b
--- /dev/null
+++ b/lib/libc/net/getservbyport.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getservbyport.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <netdb.h>
+#include <string.h>
+
+extern int _serv_stayopen;
+
+struct servent *
+getservbyport(port, proto)
+	int port;
+	const char *proto;
+{
+	register struct servent *p;
+
+	setservent(_serv_stayopen);
+	while (p = getservent()) {
+		if (p->s_port != port)
+			continue;
+		if (proto == 0 || strcmp(p->s_proto, proto) == 0)
+			break;
+	}
+	if (!_serv_stayopen)
+		endservent();
+	return (p);
+}
diff --git a/lib/libc/net/getservent.3 b/lib/libc/net/getservent.3
new file mode 100644
index 0000000..b9b2585
--- /dev/null
+++ b/lib/libc/net/getservent.3
@@ -0,0 +1,155 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getservent.3	8.3 (Berkeley) 1/12/94
+.\"
+.Dd January 12, 1994
+.Dt GETSERVENT 3
+.Os BSD 4.2
+.Sh NAME
+.Nm getservent ,
+.Nm getservbyport ,
+.Nm getservbyname ,
+.Nm setservent ,
+.Nm endservent
+.Nd get service entry
+.Sh SYNOPSIS
+.Fd #include <netdb.h>
+.Ft struct servent *
+.Fn getservent 
+.Ft struct servent *
+.Fn getservbyname "const char *name" "const char *proto"
+.Ft struct servent *
+.Fn getservbyport "int port" "const char *proto"
+.Ft void
+.Fn setservent "int stayopen"
+.Ft void
+.Fn endservent void
+.Sh DESCRIPTION
+The
+.Fn getservent ,
+.Fn getservbyname ,
+and
+.Fn getservbyport
+functions
+each return a pointer to an object with the
+following structure
+containing the broken-out
+fields of a line in the network services data base,
+.Pa /etc/services .
+.Bd -literal -offset indent
+struct	servent {
+	char	*s_name;	/* official name of service */
+	char	**s_aliases;	/* alias list */
+	int	s_port;		/* port service resides at */
+	char	*s_proto;	/* protocol to use */
+};
+.Ed
+.Pp
+The members of this structure are:
+.Bl -tag -width s_aliases
+.It Fa s_name
+The official name of the service.
+.It Fa s_aliases
+A zero terminated list of alternate names for the service.
+.It Fa s_port
+The port number at which the service resides.
+Port numbers are returned in network byte order.
+.It Fa s_proto
+The name of the protocol to use when contacting the
+service.
+.El
+.Pp
+The
+.Fn getservent
+function
+reads the next line of the file, opening the file if necessary.
+.Pp
+The
+.Fn setservent
+function
+opens and rewinds the file.  If the
+.Fa stayopen
+flag is non-zero,
+the net data base will not be closed after each call to 
+.Fn getservbyname
+or
+.Fn getservbyport .
+.Pp
+The
+.Fn endservent
+function
+closes the file.
+.Pp
+The
+.Fn getservbyname
+and
+.Fn getservbyport
+functions
+sequentially search from the beginning
+of the file until a matching
+protocol name or
+port number is found,
+or until
+.Dv EOF
+is encountered.
+If a protocol name is also supplied (non-
+.Dv NULL ) , 
+searches must also match the protocol.
+.ne 1i
+.Sh FILES
+.Bl -tag -width /etc/services -compact
+.It Pa /etc/services
+.El
+.Sh DIAGNOSTICS
+Null pointer
+(0) returned on
+.Dv EOF
+or error.
+.Sh SEE ALSO
+.Xr getprotoent 3 ,
+.Xr services 5
+.Sh HISTORY
+The
+.Fn getservent ,
+.Fn getservbyport ,
+.Fn getservbyname ,
+.Fn setservent ,
+and
+.Fn endservent
+functions appeared in 
+.Bx 4.2 .
+.Sh BUGS
+These functions use static data storage;
+if the data is needed for future use, it should be
+copied before any subsequent calls overwrite it.
+Expecting port numbers to fit in a 32 bit
+quantity is probably naive.
diff --git a/lib/libc/net/getservent.c b/lib/libc/net/getservent.c
new file mode 100644
index 0000000..9fb47b6
--- /dev/null
+++ b/lib/libc/net/getservent.c
@@ -0,0 +1,189 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getservent.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#ifdef YP
+#include <rpc/rpc.h>
+#include <rpcsvc/yp_prot.h>
+#include <rpcsvc/ypclnt.h>
+static int serv_stepping_yp = 0;
+#endif
+
+#define	MAXALIASES	35
+
+static FILE *servf = NULL;
+static char line[BUFSIZ+1];
+static struct servent serv;
+static char *serv_aliases[MAXALIASES];
+int _serv_stayopen;
+
+#ifdef YP
+static int
+_getypservent(line)
+	char *line;
+{
+	static char *key = NULL;
+	static int keylen;
+	static char *yp_domain = NULL;
+	char *lastkey, *result;
+	int resultlen;
+	int rv;
+
+	if(!yp_domain) {
+		if(yp_get_default_domain(&yp_domain))
+			return (0);
+	}
+
+	if (!serv_stepping_yp) {
+		if (key)
+			free(key);
+		if ((rv = yp_first(yp_domain, "services.byname", &key, &keylen,
+			     &result, &resultlen))) {
+			free(result);
+			serv_stepping_yp = 0;
+			return(0);
+		}
+		serv_stepping_yp = 1;
+	} else {
+		lastkey = key;
+		rv = yp_next(yp_domain, "services.byname", key, keylen, &key,
+			     &keylen, &result, &resultlen);
+		free(lastkey);
+		if (rv) {
+			serv_stepping_yp = 0;
+			return (0);
+		}
+	}
+
+	strncpy(line, result, BUFSIZ - 1);
+	/* getservent() expects lines terminated with \n -- make it happy */
+	strcat(line, "\n");
+
+	free(result);
+
+	return(1);
+}
+#endif
+
+void
+setservent(f)
+	int f;
+{
+	if (servf == NULL)
+		servf = fopen(_PATH_SERVICES, "r" );
+	else
+		rewind(servf);
+	_serv_stayopen |= f;
+}
+
+void
+endservent()
+{
+	if (servf) {
+		fclose(servf);
+		servf = NULL;
+	}
+	_serv_stayopen = 0;
+}
+
+struct servent *
+getservent()
+{
+	char *p;
+	register char *cp, **q;
+
+#ifdef YP
+	if (serv_stepping_yp && _getypservent(line)) {
+		p = (char *)&line;
+		goto unpack;
+	}
+tryagain:
+#endif
+	if (servf == NULL && (servf = fopen(_PATH_SERVICES, "r" )) == NULL)
+		return (NULL);
+again:
+	if ((p = fgets(line, BUFSIZ, servf)) == NULL)
+		return (NULL);
+#ifdef YP
+	if (*p == '+') {
+		if (!_getypservent(&line))
+			goto tryagain;
+	}
+unpack:
+#endif
+	if (*p == '#')
+		goto again;
+	cp = strpbrk(p, "#\n");
+	if (cp == NULL)
+		goto again;
+	*cp = '\0';
+	serv.s_name = p;
+	p = strpbrk(p, " \t");
+	if (p == NULL)
+		goto again;
+	*p++ = '\0';
+	while (*p == ' ' || *p == '\t')
+		p++;
+	cp = strpbrk(p, ",/");
+	if (cp == NULL)
+		goto again;
+	*cp++ = '\0';
+	serv.s_port = htons((u_short)atoi(p));
+	serv.s_proto = cp;
+	q = serv.s_aliases = serv_aliases;
+	cp = strpbrk(cp, " \t");
+	if (cp != NULL)
+		*cp++ = '\0';
+	while (cp && *cp) {
+		if (*cp == ' ' || *cp == '\t') {
+			cp++;
+			continue;
+		}
+		if (q < &serv_aliases[MAXALIASES - 1])
+			*q++ = cp;
+		cp = strpbrk(cp, " \t");
+		if (cp != NULL)
+			*cp++ = '\0';
+	}
+	*q = NULL;
+	return (&serv);
+}
diff --git a/lib/libc/net/herror.c b/lib/libc/net/herror.c
new file mode 100644
index 0000000..9b94ee4
--- /dev/null
+++ b/lib/libc/net/herror.c
@@ -0,0 +1,112 @@
+/*-
+ * Copyright (c) 1987, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * -
+ * Portions Copyright (c) 1993 by Digital Equipment Corporation.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies, and that
+ * the name of Digital Equipment Corporation not be used in advertising or
+ * publicity pertaining to distribution of the document or software without
+ * specific, written prior permission.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
+ * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ * -
+ * --Copyright--
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)herror.c	8.1 (Berkeley) 6/4/93";
+static char rcsid[] = "$Id: herror.c,v 1.2 1995/05/30 05:40:49 rgrimes Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <netdb.h>
+#include <unistd.h>
+#include <string.h>
+
+const char *h_errlist[] = {
+	"Resolver Error 0 (no error)",
+	"Unknown host",				/* 1 HOST_NOT_FOUND */
+	"Host name lookup failure",		/* 2 TRY_AGAIN */
+	"Unknown server error",			/* 3 NO_RECOVERY */
+	"No address associated with name",	/* 4 NO_ADDRESS */
+};
+int	h_nerr = { sizeof(h_errlist)/sizeof(h_errlist[0]) };
+
+extern int	h_errno;
+
+/*
+ * herror --
+ *	print the error indicated by the h_errno value.
+ */
+void
+herror(s)
+	const char *s;
+{
+	struct iovec iov[4];
+	register struct iovec *v = iov;
+
+	if (s && *s) {
+		v->iov_base = (char *)s;
+		v->iov_len = strlen(s);
+		v++;
+		v->iov_base = ": ";
+		v->iov_len = 2;
+		v++;
+	}
+	v->iov_base = (char *)hstrerror(h_errno);
+	v->iov_len = strlen(v->iov_base);
+	v++;
+	v->iov_base = "\n";
+	v->iov_len = 1;
+	writev(STDERR_FILENO, iov, (v - iov) + 1);
+}
+
+const char *
+hstrerror(err)
+	int err;
+{
+	if (err < 0)
+		return ("Resolver internal error");
+	else if (err < h_nerr)
+		return (h_errlist[err]);
+	return ("Unknown resolver error");
+}
diff --git a/lib/libc/net/inet.3 b/lib/libc/net/inet.3
new file mode 100644
index 0000000..9318f45
--- /dev/null
+++ b/lib/libc/net/inet.3
@@ -0,0 +1,195 @@
+.\" Copyright (c) 1983, 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)inet.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt INET 3
+.Os BSD 4.2
+.Sh NAME
+.Nm inet_aton ,
+.Nm inet_addr ,
+.Nm inet_network ,
+.Nm inet_ntoa ,
+.Nm inet_makeaddr ,
+.Nm inet_lnaof ,
+.Nm inet_netof
+.Nd Internet address manipulation routines
+.Sh SYNOPSIS
+.Fd #include <sys/socket.h>
+.Fd #include <netinet/in.h>
+.Fd #include <arpa/inet.h>
+.Ft int 
+.Fn inet_aton "char *cp" "struct in_addr *pin"
+.Ft unsigned long 
+.Fn inet_addr "char *cp"
+.Ft unsigned long 
+.Fn inet_network "char *cp"
+.Ft char *
+.Fn inet_ntoa "struct in_addr in"
+.Ft struct in_addr 
+.Fn inet_makeaddr "int net" "int lna"
+.Ft unsigned long 
+.Fn inet_lnaof "struct in_addr in"
+.Ft unsigned long 
+.Fn inet_netof "struct in_addr in"
+.Sh DESCRIPTION
+The routines
+.Fn inet_aton ,
+.Fn inet_addr
+and
+.Fn inet_network
+interpret character strings representing
+numbers expressed in the Internet standard
+.Ql \&.
+notation.
+The
+.Fn inet_aton
+routine interprets the specified character string as an Internet address,
+placing the address into the structure provided.
+It returns 1 if the string was successfully interpreted,
+or 0 if the string is invalid.
+The
+.Fn inet_addr
+and
+.Fn inet_network
+functions return numbers suitable for use
+as Internet addresses and Internet network
+numbers, respectively.
+The routine
+.Fn inet_ntoa
+takes an Internet address and returns an
+.Tn ASCII
+string representing the address in
+.Ql \&.
+notation.  The routine
+.Fn inet_makeaddr
+takes an Internet network number and a local
+network address and constructs an Internet address
+from it.  The routines
+.Fn inet_netof
+and
+.Fn inet_lnaof
+break apart Internet host addresses, returning
+the network number and local network address part,
+respectively.
+.Pp
+All Internet addresses are returned in network
+order (bytes ordered from left to right).
+All network numbers and local address parts are
+returned as machine format integer values.
+.Sh INTERNET ADDRESSES
+Values specified using the
+.Ql \&.
+notation take one
+of the following forms:
+.Bd -literal -offset indent
+a.b.c.d
+a.b.c
+a.b
+a
+.Ed
+.Pp
+When four parts are specified, each is interpreted
+as a byte of data and assigned, from left to right,
+to the four bytes of an Internet address.  Note
+that when an Internet address is viewed as a 32-bit
+integer quantity on the
+.Tn VAX
+the bytes referred to
+above appear as
+.Dq Li d.c.b.a .
+That is,
+.Tn VAX
+bytes are
+ordered from right to left.
+.Pp
+When a three part address is specified, the last
+part is interpreted as a 16-bit quantity and placed
+in the right-most two bytes of the network address.
+This makes the three part address format convenient
+for specifying Class B network addresses as
+.Dq Li 128.net.host .
+.Pp
+When a two part address is supplied, the last part
+is interpreted as a 24-bit quantity and placed in
+the right most three bytes of the network address.
+This makes the two part address format convenient
+for specifying Class A network addresses as
+.Dq Li net.host .
+.Pp
+When only one part is given, the value is stored
+directly in the network address without any byte
+rearrangement.
+.Pp
+All numbers supplied as
+.Dq parts
+in a
+.Ql  \&.
+notation
+may be decimal, octal, or hexadecimal, as specified
+in the C language (i.e., a leading 0x or 0X implies
+hexadecimal; otherwise, a leading 0 implies octal;
+otherwise, the number is interpreted as decimal).
+.Sh DIAGNOSTICS
+The constant
+.Dv INADDR_NONE
+is returned by
+.Fn inet_addr
+and
+.Fn inet_network
+for malformed requests.
+.Sh SEE ALSO
+.Xr gethostbyname 3 ,
+.Xr getnetent 3 ,
+.Xr hosts 5 ,
+.Xr networks 5 ,
+.Sh HISTORY
+These
+functions appeared in 
+.Bx 4.2 .
+.Sh BUGS
+The value
+.Dv INADDR_NONE
+(0xffffffff) is a valid broadcast address, but
+.Fn inet_addr
+cannot return that value without indicating failure.
+The newer
+.Fn inet_aton
+function does not share this problem.
+The problem of host byte ordering versus network byte ordering is
+confusing.
+The string returned by
+.Fn inet_ntoa
+resides in a static memory area.
+.Pp
+Inet_addr should return a
+.Fa struct in_addr .
diff --git a/lib/libc/net/inet_addr.c b/lib/libc/net/inet_addr.c
new file mode 100644
index 0000000..f69d0fc
--- /dev/null
+++ b/lib/libc/net/inet_addr.c
@@ -0,0 +1,152 @@
+/*
+ * Copyright (c) 1983, 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)inet_addr.c	8.1 (Berkeley) 6/17/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <ctype.h>
+
+/*
+ * Ascii internet address interpretation routine.
+ * The value returned is in network order.
+ */
+u_long
+inet_addr(cp)
+	register const char *cp;
+{
+	struct in_addr val;
+
+	if (inet_aton(cp, &val))
+		return (val.s_addr);
+	return (INADDR_NONE);
+}
+
+/*
+ * Check whether "cp" is a valid ascii representation
+ * of an Internet address and convert to a binary address.
+ * Returns 1 if the address is valid, 0 if not.
+ * This replaces inet_addr, the return value from which
+ * cannot distinguish between failure and a local broadcast address.
+ */
+int
+inet_aton(cp, addr)
+	register const char *cp;
+	struct in_addr *addr;
+{
+	register u_long val;
+	register int base, n;
+	register char c;
+	u_int parts[4];
+	register u_int *pp = parts;
+
+	for (;;) {
+		/*
+		 * Collect number up to ``.''.
+		 * Values are specified as for C:
+		 * 0x=hex, 0=octal, other=decimal.
+		 */
+		val = 0; base = 10;
+		if (*cp == '0') {
+			if (*++cp == 'x' || *cp == 'X')
+				base = 16, cp++;
+			else
+				base = 8;
+		}
+		while ((c = *cp) != '\0') {
+			if (isascii(c) && isdigit(c)) {
+				val = (val * base) + (c - '0');
+				cp++;
+				continue;
+			}
+			if (base == 16 && isascii(c) && isxdigit(c)) {
+				val = (val << 4) +
+					(c + 10 - (islower(c) ? 'a' : 'A'));
+				cp++;
+				continue;
+			}
+			break;
+		}
+		if (*cp == '.') {
+			/*
+			 * Internet format:
+			 *	a.b.c.d
+			 *	a.b.c	(with c treated as 16-bits)
+			 *	a.b	(with b treated as 24 bits)
+			 */
+			if (pp >= parts + 3 || val > 0xff)
+				return (0);
+			*pp++ = val, cp++;
+		} else
+			break;
+	}
+	/*
+	 * Check for trailing characters.
+	 */
+	if (*cp && (!isascii(*cp) || !isspace(*cp)))
+		return (0);
+	/*
+	 * Concoct the address according to
+	 * the number of parts specified.
+	 */
+	n = pp - parts + 1;
+	switch (n) {
+
+	case 1:				/* a -- 32 bits */
+		break;
+
+	case 2:				/* a.b -- 8.24 bits */
+		if (val > 0xffffff)
+			return (0);
+		val |= parts[0] << 24;
+		break;
+
+	case 3:				/* a.b.c -- 8.8.16 bits */
+		if (val > 0xffff)
+			return (0);
+		val |= (parts[0] << 24) | (parts[1] << 16);
+		break;
+
+	case 4:				/* a.b.c.d -- 8.8.8.8 bits */
+		if (val > 0xff)
+			return (0);
+		val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
+		break;
+	}
+	if (addr)
+		addr->s_addr = htonl(val);
+	return (1);
+}
diff --git a/lib/libc/net/inet_lnaof.c b/lib/libc/net/inet_lnaof.c
new file mode 100644
index 0000000..406be30
--- /dev/null
+++ b/lib/libc/net/inet_lnaof.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)inet_lnaof.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+/*
+ * Return the local network address portion of an
+ * internet address; handles class a/b/c network
+ * number formats.
+ */
+u_long
+inet_lnaof(in)
+	struct in_addr in;
+{
+	register u_long i = ntohl(in.s_addr);
+
+	if (IN_CLASSA(i))
+		return ((i)&IN_CLASSA_HOST);
+	else if (IN_CLASSB(i))
+		return ((i)&IN_CLASSB_HOST);
+	else
+		return ((i)&IN_CLASSC_HOST);
+}
diff --git a/lib/libc/net/inet_makeaddr.c b/lib/libc/net/inet_makeaddr.c
new file mode 100644
index 0000000..7976188
--- /dev/null
+++ b/lib/libc/net/inet_makeaddr.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)inet_makeaddr.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+/*
+ * Formulate an Internet address from network + host.  Used in
+ * building addresses stored in the ifnet structure.
+ */
+struct in_addr
+inet_makeaddr(net, host)
+	u_long net, host;
+{
+	u_long addr;
+
+	if (net < 128)
+		addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST);
+	else if (net < 65536)
+		addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST);
+	else if (net < 16777216L)
+		addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST);
+	else
+		addr = net | host;
+	addr = htonl(addr);
+	return (*(struct in_addr *)&addr);
+}
diff --git a/lib/libc/net/inet_netof.c b/lib/libc/net/inet_netof.c
new file mode 100644
index 0000000..d6de694
--- /dev/null
+++ b/lib/libc/net/inet_netof.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)inet_netof.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+/*
+ * Return the network number from an internet
+ * address; handles class a/b/c network #'s.
+ */
+u_long
+inet_netof(in)
+	struct in_addr in;
+{
+	register u_long i = ntohl(in.s_addr);
+
+	if (IN_CLASSA(i))
+		return (((i)&IN_CLASSA_NET) >> IN_CLASSA_NSHIFT);
+	else if (IN_CLASSB(i))
+		return (((i)&IN_CLASSB_NET) >> IN_CLASSB_NSHIFT);
+	else
+		return (((i)&IN_CLASSC_NET) >> IN_CLASSC_NSHIFT);
+}
diff --git a/lib/libc/net/inet_network.c b/lib/libc/net/inet_network.c
new file mode 100644
index 0000000..fda53b6
--- /dev/null
+++ b/lib/libc/net/inet_network.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)inet_network.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <ctype.h>
+
+/*
+ * Internet network address interpretation routine.
+ * The library routines call this routine to interpret
+ * network numbers.
+ */
+u_long
+inet_network(cp)
+	register const char *cp;
+{
+	register u_long val, base, n;
+	register char c;
+	u_long parts[4], *pp = parts;
+	register int i;
+
+again:
+	val = 0; base = 10;
+	if (*cp == '0')
+		base = 8, cp++;
+	if (*cp == 'x' || *cp == 'X')
+		base = 16, cp++;
+	while (c = *cp) {
+		if (isdigit(c)) {
+			val = (val * base) + (c - '0');
+			cp++;
+			continue;
+		}
+		if (base == 16 && isxdigit(c)) {
+			val = (val << 4) + (c + 10 - (islower(c) ? 'a' : 'A'));
+			cp++;
+			continue;
+		}
+		break;
+	}
+	if (*cp == '.') {
+		if (pp >= parts + 4)
+			return (INADDR_NONE);
+		*pp++ = val, cp++;
+		goto again;
+	}
+	if (*cp && !isspace(*cp))
+		return (INADDR_NONE);
+	*pp++ = val;
+	n = pp - parts;
+	if (n > 4)
+		return (INADDR_NONE);
+	for (val = 0, i = 0; i < n; i++) {
+		val <<= 8;
+		val |= parts[i] & 0xff;
+	}
+	return (val);
+}
diff --git a/lib/libc/net/inet_ntoa.c b/lib/libc/net/inet_ntoa.c
new file mode 100644
index 0000000..a37b1db
--- /dev/null
+++ b/lib/libc/net/inet_ntoa.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)inet_ntoa.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Convert network-format internet address
+ * to base 256 d.d.d.d representation.
+ */
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <stdio.h>
+
+char *
+inet_ntoa(in)
+	struct in_addr in;
+{
+	static char b[18];
+	register char *p;
+
+	p = (char *)&in;
+#define	UC(b)	(((int)b)&0xff)
+	(void)snprintf(b, sizeof(b),
+	    "%d.%d.%d.%d", UC(p[0]), UC(p[1]), UC(p[2]), UC(p[3]));
+	return (b);
+}
diff --git a/lib/libc/net/iso_addr.3 b/lib/libc/net/iso_addr.3
new file mode 100644
index 0000000..0565373
--- /dev/null
+++ b/lib/libc/net/iso_addr.3
@@ -0,0 +1,110 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)iso_addr.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ISO_ADDR 3
+.Os
+.Sh NAME
+.Nm iso_addr ,
+.Nm iso_ntoa
+.Nd "elementary network address conversion routines for Open System Interconnection
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <netiso/iso.h>
+.Ft struct iso_addr *
+.Fn iso_addr "char *cp"
+.Ft char *
+.Fn iso_ntoa "struct iso_addr *isoa"
+.Sh DESCRIPTION
+The routine
+.Fn iso_addr
+interprets character strings representing
+.Tn OSI
+addresses, returning binary information suitable
+for use in system calls.
+The routine
+.Fn iso_ntoa
+takes
+.Tn OSI
+addresses and returns
+.Tn ASCII
+strings representing NSAPs (network service
+access points) in a
+notation inverse to that accepted by 
+.Fn iso_addr .
+.Pp
+Unfortunately, no universal standard exists for representing
+.Tn OSI
+network addresses.
+.Pp
+The format employed by
+.Fn iso_addr
+is a sequence of hexadecimal
+.Dq digits
+(optionally separated by periods),
+of the form:
+.Bd -filled -offset indent
+<hex digits>.<hex digits>.<hex digits>
+.Ed
+.Pp
+Each pair of hexadecimal digits represents a byte
+with the leading digit indicating the higher-ordered bits.
+A period following an even number of bytes has no
+effect (but may be used to increase legibility).
+A period following an odd number of bytes has the
+effect of causing the byte of address being translated
+to have its higher order bits filled with zeros.
+.Sh RETURN VALUES
+.Fn iso_ntoa
+always returns a null terminated string.
+.Fn iso_addr
+always returns a pointer to a struct iso_addr.
+(See
+.Sx BUGS . )
+.Sh SEE ALSO
+.Xr iso 4
+.Sh HISTORY
+The
+.Fn iso_addr
+and
+.Fn iso_ntoa
+functions appeared in 
+.Bx 4.3 Reno .
+.Sh BUGS
+The returned values
+reside in a static memory area.
+.Pp
+The function
+.Fn iso_addr
+should diagnose improperly formed input, and there should be an unambiguous
+way to recognize this.
diff --git a/lib/libc/net/iso_addr.c b/lib/libc/net/iso_addr.c
new file mode 100644
index 0000000..8829497
--- /dev/null
+++ b/lib/libc/net/iso_addr.c
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)iso_addr.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <netiso/iso.h>
+#include <string.h>
+
+/* States*/
+#define VIRGIN	0
+#define GOTONE	1
+#define GOTTWO	2
+/* Inputs */
+#define	DIGIT	(4*0)
+#define	END	(4*1)
+#define DELIM	(4*2)
+
+struct iso_addr *
+iso_addr(addr)
+	register const char *addr;
+{
+	static struct iso_addr out_addr;
+	register char *cp = out_addr.isoa_genaddr;
+	char *cplim = cp + sizeof(out_addr.isoa_genaddr);
+	register int byte = 0, state = VIRGIN, new;
+
+	bzero((char *)&out_addr, sizeof(out_addr));
+	do {
+		if ((*addr >= '0') && (*addr <= '9')) {
+			new = *addr - '0';
+		} else if ((*addr >= 'a') && (*addr <= 'f')) {
+			new = *addr - 'a' + 10;
+		} else if ((*addr >= 'A') && (*addr <= 'F')) {
+			new = *addr - 'A' + 10;
+		} else if (*addr == 0)
+			state |= END;
+		else
+			state |= DELIM;
+		addr++;
+		switch (state /* | INPUT */) {
+		case GOTTWO | DIGIT:
+			*cp++ = byte; /*FALLTHROUGH*/
+		case VIRGIN | DIGIT:
+			state = GOTONE; byte = new; continue;
+		case GOTONE | DIGIT:
+			state = GOTTWO; byte = new + (byte << 4); continue;
+		default: /* | DELIM */
+			state = VIRGIN; *cp++ = byte; byte = 0; continue;
+		case GOTONE | END:
+		case GOTTWO | END:
+			*cp++ = byte; /* FALLTHROUGH */
+		case VIRGIN | END:
+			break;
+		}
+		break;
+	} while (cp < cplim);
+	out_addr.isoa_len = cp - out_addr.isoa_genaddr;
+	return (&out_addr);
+}
+
+static char hexlist[] = "0123456789abcdef";
+
+char *
+iso_ntoa(isoa)
+	const struct iso_addr *isoa;
+{
+	static char tmpbuf[sizeof(isoa->isoa_genaddr)*3];
+	const u_char *binary;
+	char *cp;
+	int i;
+
+	binary = isoa->isoa_genaddr;
+	cp = tmpbuf;
+
+	for (i = 0; i < isoa->isoa_len; i++) {
+		*cp++ = hexlist[*binary >> 4];
+		*cp++ = hexlist[*binary++ & 0xf];
+
+		if ((((i % 2) == 0) && ((i + 1) < isoa->isoa_len)))
+			*cp++ = '.';
+	}
+	*cp = '\0';
+	return tmpbuf;
+}
diff --git a/lib/libc/net/linkaddr.3 b/lib/libc/net/linkaddr.3
new file mode 100644
index 0000000..54e3206
--- /dev/null
+++ b/lib/libc/net/linkaddr.3
@@ -0,0 +1,131 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Donn Seeley at BSDI.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)linkaddr.3	8.1 (Berkeley) 7/28/93
+.\"
+.Dd July 28, 1993
+.Dt LINK_ADDR 3
+.Os BSD 4.4
+.Sh NAME
+.Nm link_addr ,
+.Nm link_ntoa
+.Nd elementary address specification routines for link level access
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/socket.h>
+.Fd #include <net/if_dl.h>
+.Ft void
+.Fn link_addr "const char *addr" "struct sockaddr_dl *sdl"
+.Ft char *
+.Fn link_ntoa "const struct sockaddr_dl *sdl"
+.Sh DESCRIPTION
+The routine
+.Fn link_addr
+interprets character strings representing
+link-level addresses, returning binary information suitable
+for use in system calls.
+The routine
+.Fn link_ntoa
+takes
+a link-level
+address and returns an
+.Tn ASCII
+string representing some of the information present,
+including the link level address itself, and the interface name
+or number, if present.
+This facility is experimental and is
+still subject to change.
+.Pp
+For
+.Fn link_addr ,
+the string
+.Fa addr
+may contain
+an optional network interface identifier of the form
+.Dq "name unit-number" ,
+suitable for the first argument to
+.Xr ifconfig 4 ,
+followed in all cases by a colon and
+an interface address in the form of
+groups of hexadecimal digits
+separated by periods.
+Each group represents a byte of address;
+address bytes are filled left to right from
+low order bytes through high order bytes.
+.Pp
+.\" A regular expression may make this format clearer:
+.\" .Bd -literal -offset indent
+.\" ([a-z]+[0-9]+:)?[0-9a-f]+(\e.[0-9a-f]+)*
+.\" .Ed
+.\" .Pp
+Thus
+.Li le0:8.0.9.13.d.30
+represents an ethernet address
+to be transmitted on the first Lance ethernet interface.
+.Sh RETURN VALUES
+.Fn link_ntoa
+always returns a null terminated string.
+.Fn link_addr
+has no return value.
+(See
+.Sx BUGS . )
+.Sh SEE ALSO
+.Xr iso 4 ,
+.Sh HISTORY
+The
+.Fn link_addr
+and
+.Fn link_ntoa
+functions appeared in 
+.Bx 4.3 Reno  .
+.Sh BUGS
+The returned values for link_ntoa
+reside in a static memory area.
+.Pp
+The function
+.Fn link_addr
+should diagnose improperly formed input, and there should be an unambiguous
+way to recognize this.
+.Pp
+If the
+.Va sdl_len
+field of the link socket address
+.Fa sdl
+is 0,
+.Fn link_ntoa
+will not insert a colon before the interface address bytes.
+If this translated address is given to
+.Fn link_addr
+without inserting an initial colon,
+the latter will not interpret it correctly.
diff --git a/lib/libc/net/linkaddr.c b/lib/libc/net/linkaddr.c
new file mode 100644
index 0000000..68eed3d
--- /dev/null
+++ b/lib/libc/net/linkaddr.c
@@ -0,0 +1,158 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)linkaddr.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <net/if_dl.h>
+#include <string.h>
+
+/* States*/
+#define NAMING	0
+#define GOTONE	1
+#define GOTTWO	2
+#define RESET	3
+/* Inputs */
+#define	DIGIT	(4*0)
+#define	END	(4*1)
+#define DELIM	(4*2)
+#define LETTER	(4*3)
+
+void
+link_addr(addr, sdl)
+	register const char *addr;
+	register struct sockaddr_dl *sdl;
+{
+	register char *cp = sdl->sdl_data;
+	char *cplim = sdl->sdl_len + (char *)sdl;
+	register int byte = 0, state = NAMING, new;
+
+	bzero((char *)&sdl->sdl_family, sdl->sdl_len - 1);
+	sdl->sdl_family = AF_LINK;
+	do {
+		state &= ~LETTER;
+		if ((*addr >= '0') && (*addr <= '9')) {
+			new = *addr - '0';
+		} else if ((*addr >= 'a') && (*addr <= 'f')) {
+			new = *addr - 'a' + 10;
+		} else if ((*addr >= 'A') && (*addr <= 'F')) {
+			new = *addr - 'A' + 10;
+		} else if (*addr == 0) {
+			state |= END;
+		} else if (state == NAMING &&
+			   (((*addr >= 'A') && (*addr <= 'Z')) ||
+			   ((*addr >= 'a') && (*addr <= 'z'))))
+			state |= LETTER;
+		else
+			state |= DELIM;
+		addr++;
+		switch (state /* | INPUT */) {
+		case NAMING | DIGIT:
+		case NAMING | LETTER:
+			*cp++ = addr[-1];
+			continue;
+		case NAMING | DELIM:
+			state = RESET;
+			sdl->sdl_nlen = cp - sdl->sdl_data;
+			continue;
+		case GOTTWO | DIGIT:
+			*cp++ = byte;
+			/* FALLTHROUGH */
+		case RESET | DIGIT:
+			state = GOTONE;
+			byte = new;
+			continue;
+		case GOTONE | DIGIT:
+			state = GOTTWO;
+			byte = new + (byte << 4);
+			continue;
+		default: /* | DELIM */
+			state = RESET;
+			*cp++ = byte;
+			byte = 0;
+			continue;
+		case GOTONE | END:
+		case GOTTWO | END:
+			*cp++ = byte;
+			/* FALLTHROUGH */
+		case RESET | END:
+			break;
+		}
+		break;
+	} while (cp < cplim);
+	sdl->sdl_alen = cp - LLADDR(sdl);
+	new = cp - (char *)sdl;
+	if (new > sizeof(*sdl))
+		sdl->sdl_len = new;
+	return;
+}
+
+static char hexlist[] = "0123456789abcdef";
+
+char *
+link_ntoa(sdl)
+	register const struct sockaddr_dl *sdl;
+{
+	static char obuf[64];
+	register char *out = obuf;
+	register int i;
+	register u_char *in = (u_char *)LLADDR(sdl);
+	u_char *inlim = in + sdl->sdl_alen;
+	int firsttime = 1;
+
+	if (sdl->sdl_nlen) {
+		bcopy(sdl->sdl_data, obuf, sdl->sdl_nlen);
+		out += sdl->sdl_nlen;
+		if (sdl->sdl_alen)
+			*out++ = ':';
+	}
+	while (in < inlim) {
+		if (firsttime)
+			firsttime = 0;
+		else
+			*out++ = '.';
+		i = *in++;
+		if (i > 0xf) {
+			out[1] = hexlist[i & 0xf];
+			i >>= 4;
+			out[0] = hexlist[i];
+			out += 2;
+		} else
+			*out++ = hexlist[i];
+	}
+	*out = 0;
+	return (obuf);
+}
diff --git a/lib/libc/net/ns.3 b/lib/libc/net/ns.3
new file mode 100644
index 0000000..8646826
--- /dev/null
+++ b/lib/libc/net/ns.3
@@ -0,0 +1,130 @@
+.\" Copyright (c) 1986, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)ns.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt NS 3
+.Os BSD 4.3
+.Sh NAME
+.Nm ns_addr ,
+.Nm ns_ntoa
+.Nd Xerox
+.Tn NS Ns (tm)
+address conversion routines
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <netns/ns.h>
+.Ft struct ns_addr 
+.Fn ns_addr "char *cp"
+.Ft char *
+.Fn ns_ntoa "struct ns_addr ns"
+.Sh DESCRIPTION
+The routine
+.Fn ns_addr
+interprets character strings representing
+.Tn XNS
+addresses, returning binary information suitable
+for use in system calls.
+The routine
+.Fn ns_ntoa
+takes
+.Tn XNS
+addresses and returns
+.Tn ASCII
+strings representing the address in a
+notation in common use in the Xerox Development Environment:
+.Bd -filled -offset indent
+<network number>.<host number>.<port number>
+.Ed
+.Pp
+Trailing zero fields are suppressed, and each number is printed in hexadecimal,
+in a format suitable for input to 
+.Fn ns_addr .
+Any fields lacking super-decimal digits will have a
+trailing
+.Ql H
+appended.
+.Pp
+Unfortunately, no universal standard exists for representing
+.Tn XNS
+addresses.
+An effort has been made to insure that
+.Fn ns_addr
+be compatible with most formats in common use.
+It will first separate an address into 1 to 3 fields using a single delimiter
+chosen from
+period
+.Ql \&. ,
+colon
+.Ql \&:
+or pound-sign
+.Ql \&# .
+Each field is then examined for byte separators (colon or period).
+If there are byte separators, each subfield separated is taken to be
+a small hexadecimal number, and the entirety is taken as a network-byte-ordered
+quantity to be zero extended in the high-network-order bytes.
+Next, the field is inspected for hyphens, in which case
+the field is assumed to be a number in decimal notation
+with hyphens separating the millenia.
+Next, the field is assumed to be a number:
+It is interpreted
+as hexadecimal if there is a leading
+.Ql 0x
+(as in C),
+a trailing
+.Ql H
+(as in Mesa), or there are any super-decimal digits present.
+It is interpreted as octal is there is a leading
+.Ql 0
+and there are no super-octal digits.
+Otherwise, it is converted as a decimal number.
+.Sh RETURN VALUES
+None. (See
+.Sx BUGS . )
+.Sh SEE ALSO
+.Xr hosts 5 ,
+.Xr networks 5 ,
+.Sh HISTORY
+The
+.Fn ns_addr
+and
+.Fn ns_toa
+functions appeared in 
+.Bx 4.3 .
+.Sh BUGS
+The string returned by
+.Fn ns_ntoa
+resides in a static memory area.
+The function
+.Fn ns_addr
+should diagnose improperly formed input, and there should be an unambiguous
+way to recognize this.
diff --git a/lib/libc/net/ns_addr.c b/lib/libc/net/ns_addr.c
new file mode 100644
index 0000000..da8f8b4
--- /dev/null
+++ b/lib/libc/net/ns_addr.c
@@ -0,0 +1,227 @@
+/*
+ * Copyright (c) 1986, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * J.Q. Johnson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ns_addr.c	8.1 (Berkeley) 6/7/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netns/ns.h>
+#include <stdio.h>
+#include <string.h>
+
+static struct ns_addr addr, zero_addr;
+
+static void Field(), cvtbase();
+
+struct ns_addr
+ns_addr(name)
+	const char *name;
+{
+	char separator;
+	char *hostname, *socketname, *cp;
+	char buf[50];
+
+	(void)strncpy(buf, name, sizeof(buf) - 1);
+	buf[sizeof(buf) - 1] = '\0';
+
+	/*
+	 * First, figure out what he intends as a field separtor.
+	 * Despite the way this routine is written, the prefered
+	 * form  2-272.AA001234H.01777, i.e. XDE standard.
+	 * Great efforts are made to insure backward compatability.
+	 */
+	if (hostname = strchr(buf, '#'))
+		separator = '#';
+	else {
+		hostname = strchr(buf, '.');
+		if ((cp = strchr(buf, ':')) &&
+		    ((hostname && cp < hostname) || (hostname == 0))) {
+			hostname = cp;
+			separator = ':';
+		} else
+			separator = '.';
+	}
+	if (hostname)
+		*hostname++ = 0;
+
+	addr = zero_addr;
+	Field(buf, addr.x_net.c_net, 4);
+	if (hostname == 0)
+		return (addr);  /* No separator means net only */
+
+	socketname = strchr(hostname, separator);
+	if (socketname) {
+		*socketname++ = 0;
+		Field(socketname, (u_char *)&addr.x_port, 2);
+	}
+
+	Field(hostname, addr.x_host.c_host, 6);
+
+	return (addr);
+}
+
+static void
+Field(buf, out, len)
+	char *buf;
+	u_char *out;
+	int len;
+{
+	register char *bp = buf;
+	int i, ibase, base16 = 0, base10 = 0, clen = 0;
+	int hb[6], *hp;
+	char *fmt;
+
+	/*
+	 * first try 2-273#2-852-151-014#socket
+	 */
+	if ((*buf != '-') &&
+	    (1 < (i = sscanf(buf, "%d-%d-%d-%d-%d",
+			&hb[0], &hb[1], &hb[2], &hb[3], &hb[4])))) {
+		cvtbase(1000L, 256, hb, i, out, len);
+		return;
+	}
+	/*
+	 * try form 8E1#0.0.AA.0.5E.E6#socket
+	 */
+	if (1 < (i = sscanf(buf,"%x.%x.%x.%x.%x.%x",
+			&hb[0], &hb[1], &hb[2], &hb[3], &hb[4], &hb[5]))) {
+		cvtbase(256L, 256, hb, i, out, len);
+		return;
+	}
+	/*
+	 * try form 8E1#0:0:AA:0:5E:E6#socket
+	 */
+	if (1 < (i = sscanf(buf,"%x:%x:%x:%x:%x:%x",
+			&hb[0], &hb[1], &hb[2], &hb[3], &hb[4], &hb[5]))) {
+		cvtbase(256L, 256, hb, i, out, len);
+		return;
+	}
+	/*
+	 * This is REALLY stretching it but there was a
+	 * comma notation separting shorts -- definitely non standard
+	 */
+	if (1 < (i = sscanf(buf,"%x,%x,%x",
+			&hb[0], &hb[1], &hb[2]))) {
+		hb[0] = htons(hb[0]); hb[1] = htons(hb[1]);
+		hb[2] = htons(hb[2]);
+		cvtbase(65536L, 256, hb, i, out, len);
+		return;
+	}
+
+	/* Need to decide if base 10, 16 or 8 */
+	while (*bp) switch (*bp++) {
+
+	case '0': case '1': case '2': case '3': case '4': case '5':
+	case '6': case '7': case '-':
+		break;
+
+	case '8': case '9':
+		base10 = 1;
+		break;
+
+	case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
+	case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+		base16 = 1;
+		break;
+
+	case 'x': case 'X':
+		*--bp = '0';
+		base16 = 1;
+		break;
+
+	case 'h': case 'H':
+		base16 = 1;
+		/* fall into */
+
+	default:
+		*--bp = 0; /* Ends Loop */
+	}
+	if (base16) {
+		fmt = "%3x";
+		ibase = 4096;
+	} else if (base10 == 0 && *buf == '0') {
+		fmt = "%3o";
+		ibase = 512;
+	} else {
+		fmt = "%3d";
+		ibase = 1000;
+	}
+
+	for (bp = buf; *bp++; ) clen++;
+	if (clen == 0) clen++;
+	if (clen > 18) clen = 18;
+	i = ((clen - 1) / 3) + 1;
+	bp = clen + buf - 3;
+	hp = hb + i - 1;
+
+	while (hp > hb) {
+		(void)sscanf(bp, fmt, hp);
+		bp[0] = 0;
+		hp--;
+		bp -= 3;
+	}
+	(void)sscanf(buf, fmt, hp);
+	cvtbase((long)ibase, 256, hb, i, out, len);
+}
+
+static void
+cvtbase(oldbase,newbase,input,inlen,result,reslen)
+	long oldbase;
+	int newbase;
+	int input[];
+	int inlen;
+	unsigned char result[];
+	int reslen;
+{
+	int d, e;
+	long sum;
+
+	e = 1;
+	while (e > 0 && reslen > 0) {
+		d = 0; e = 0; sum = 0;
+		/* long division: input=input/newbase */
+		while (d < inlen) {
+			sum = sum*oldbase + (long) input[d];
+			e += (sum > 0);
+			input[d++] = sum / newbase;
+			sum %= newbase;
+		}
+		result[--reslen] = sum;	/* accumulate remainder */
+	}
+	for (d=0; d < reslen; d++)
+		result[d] = 0;
+}
diff --git a/lib/libc/net/ns_ntoa.c b/lib/libc/net/ns_ntoa.c
new file mode 100644
index 0000000..0f01f0b
--- /dev/null
+++ b/lib/libc/net/ns_ntoa.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 1986, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ns_ntoa.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netns/ns.h>
+#include <stdio.h>
+
+char *
+ns_ntoa(addr)
+	struct ns_addr addr;
+{
+	static char obuf[40];
+	union { union ns_net net_e; u_long long_e; } net;
+	u_short port = htons(addr.x_port);
+	register char *cp;
+	char *cp2;
+	register u_char *up = addr.x_host.c_host;
+	u_char *uplim = up + 6;
+	static char *spectHex();
+
+	net.net_e = addr.x_net;
+	sprintf(obuf, "%lx", ntohl(net.long_e));
+	cp = spectHex(obuf);
+	cp2 = cp + 1;
+	while (*up==0 && up < uplim) up++;
+	if (up == uplim) {
+		if (port) {
+			sprintf(cp, ".0");
+			cp += 2;
+		}
+	} else {
+		sprintf(cp, ".%x", *up++);
+		while (up < uplim) {
+			while (*cp) cp++;
+			sprintf(cp, "%02x", *up++);
+		}
+		cp = spectHex(cp2);
+	}
+	if (port) {
+		sprintf(cp, ".%x", port);
+		spectHex(cp + 1);
+	}
+	return (obuf);
+}
+
+static char *
+spectHex(p0)
+	char *p0;
+{
+	int ok = 0;
+	int nonzero = 0;
+	register char *p = p0;
+	for (; *p; p++) switch (*p) {
+
+	case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
+		*p += ('A' - 'a');
+		/* fall into . . . */
+	case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+		ok = 1;
+	case '1': case '2': case '3': case '4': case '5':
+	case '6': case '7': case '8': case '9':
+		nonzero = 1;
+	}
+	if (nonzero && !ok) { *p++ = 'H'; *p = 0; }
+	return (p);
+}
diff --git a/lib/libc/net/rcmd.3 b/lib/libc/net/rcmd.3
new file mode 100644
index 0000000..641ed7f
--- /dev/null
+++ b/lib/libc/net/rcmd.3
@@ -0,0 +1,203 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)rcmd.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt RCMD 3
+.Os BSD 4.2
+.Sh NAME
+.Nm rcmd ,
+.Nm rresvport ,
+.Nm iruserok ,
+.Nm ruserok
+.Nd routines for returning a stream to a remote command
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn rcmd "char **ahost" "int inport" "const char *locuser" "const char *remuser" "const char *cmd" "int *fd2p"
+.Ft int
+.Fn rresvport "int *port"
+.Ft int
+.Fn iruserok "u_long raddr" "int superuser" "const char *ruser" "const char *luser"
+.Ft int
+.Fn ruserok "const char *rhost" "int superuser" "const char *ruser" "const char *luser"
+.Sh DESCRIPTION
+The
+.Fn rcmd
+function
+is used by the super-user to execute a command on
+a remote machine using an authentication scheme based
+on reserved port numbers.
+The
+.Fn rresvport
+function
+returns a descriptor to a socket
+with an address in the privileged port space.
+The
+.Fn ruserok
+function
+is used by servers
+to authenticate clients requesting service with
+.Fn rcmd .
+All three functions are present in the same file and are used
+by the
+.Xr rshd 8
+server (among others).
+.Pp
+The
+.Fn rcmd
+function
+looks up the host
+.Fa *ahost
+using
+.Xr gethostbyname 3 ,
+returning \-1 if the host does not exist.
+Otherwise
+.Fa *ahost
+is set to the standard name of the host
+and a connection is established to a server
+residing at the well-known Internet port
+.Fa inport .
+.Pp
+If the connection succeeds,
+a socket in the Internet domain of type
+.Dv SOCK_STREAM
+is returned to the caller, and given to the remote
+command as 
+.Em stdin
+and
+.Em stdout .
+If
+.Fa fd2p
+is non-zero, then an auxiliary channel to a control
+process will be set up, and a descriptor for it will be placed
+in
+.Fa *fd2p .
+The control process will return diagnostic
+output from the command (unit 2) on this channel, and will also
+accept bytes on this channel as being
+.Tn UNIX
+signal numbers, to be
+forwarded to the process group of the command.
+If
+.Fa fd2p
+is 0, then the 
+.Em stderr
+(unit 2 of the remote
+command) will be made the same as the 
+.Em stdout
+and no
+provision is made for sending arbitrary signals to the remote process,
+although you may be able to get its attention by using out-of-band data.
+.Pp
+The protocol is described in detail in
+.Xr rshd 8 .
+.Pp
+The
+.Fn rresvport
+function is used to obtain a socket with a privileged
+address bound to it.  This socket is suitable for use
+by 
+.Fn rcmd
+and several other functions.  Privileged Internet ports are those
+in the range 0 to 1023.  Only the super-user
+is allowed to bind an address of this sort to a socket.
+.Pp
+The
+.Fn iruserok
+and
+.Fn ruserok
+functions take a remote host's IP address or name, as returned by the
+.Xr gethostbyname 3
+routines, two user names and a flag indicating whether the local user's
+name is that of the super-user.
+Then, if the user is
+.Em NOT
+the super-user, it checks the
+.Pa /etc/hosts.equiv
+file.
+If that lookup is not done, or is unsuccessful, the
+.Pa .rhosts
+in the local user's home directory is checked to see if the request for
+service is allowed.
+.Pp
+If this file does not exist, is not a regular file, is owned by anyone
+other than the user or the super-user, or is writeable by anyone other
+than the owner, the check automatically fails.
+Zero is returned if the machine name is listed in the
+.Dq Pa hosts.equiv
+file, or the host and remote user name are found in the
+.Dq Pa .rhosts
+file; otherwise
+.Fn iruserok
+and
+.Fn ruserok
+return \-1.
+If the local domain (as obtained from
+.Xr gethostname 2 )
+is the same as the remote domain, only the machine name need be specified.
+.Pp
+The
+.Fn iruserok
+function is strongly preferred for security reasons.
+It requires trusting the local DNS at most, while the
+.Fn ruserok
+function requires trusting the entire DNS, which can be spoofed.
+.Sh DIAGNOSTICS
+The
+.Fn rcmd
+function
+returns a valid socket descriptor on success.
+It returns \-1 on error and prints a diagnostic message on the standard error.
+.Pp
+The
+.Fn rresvport
+function
+returns a valid, bound socket descriptor on success.
+It returns \-1 on error with the global value
+.Va errno
+set according to the reason for failure.
+The error code
+.Dv EAGAIN
+is overloaded to mean ``All network ports in use.''
+.Sh SEE ALSO
+.Xr rlogin 1 ,
+.Xr rsh 1 ,
+.Xr intro 2 ,
+.Xr rexec 3 ,
+.Xr rexecd 8 ,
+.Xr rlogind 8 ,
+.Xr rshd 8
+.Sh HISTORY
+These
+functions appeared in 
+.Bx 4.2 .
diff --git a/lib/libc/net/rcmd.c b/lib/libc/net/rcmd.c
new file mode 100644
index 0000000..405dd8e
--- /dev/null
+++ b/lib/libc/net/rcmd.c
@@ -0,0 +1,501 @@
+/*
+ * Copyright (c) 1983, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rcmd.c	8.3 (Berkeley) 3/26/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <signal.h>
+#include <fcntl.h>
+#include <netdb.h>
+#include <unistd.h>
+#include <pwd.h>
+#include <errno.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+#ifdef YP
+#include <rpc/rpc.h>
+#include <rpcsvc/yp_prot.h>
+#include <rpcsvc/ypclnt.h>
+#endif
+
+#define max(a, b)	((a > b) ? a : b)
+
+int	__ivaliduser __P((FILE *, u_long, const char *, const char *));
+static int __icheckhost __P((u_long, char *));
+
+int
+rcmd(ahost, rport, locuser, remuser, cmd, fd2p)
+	char **ahost;
+	u_short rport;
+	const char *locuser, *remuser, *cmd;
+	int *fd2p;
+{
+	struct hostent *hp;
+	struct sockaddr_in sin, from;
+	fd_set reads;
+	long oldmask;
+	pid_t pid;
+	int s, lport, timo;
+	char c;
+
+	pid = getpid();
+	hp = gethostbyname(*ahost);
+	if (hp == NULL) {
+		herror(*ahost);
+		return (-1);
+	}
+	*ahost = hp->h_name;
+	oldmask = sigblock(sigmask(SIGURG));
+	for (timo = 1, lport = IPPORT_RESERVED - 1;;) {
+		s = rresvport(&lport);
+		if (s < 0) {
+			if (errno == EAGAIN)
+				(void)fprintf(stderr,
+				    "rcmd: socket: All ports in use\n");
+			else
+				(void)fprintf(stderr, "rcmd: socket: %s\n",
+				    strerror(errno));
+			sigsetmask(oldmask);
+			return (-1);
+		}
+		fcntl(s, F_SETOWN, pid);
+		sin.sin_family = hp->h_addrtype;
+		bcopy(hp->h_addr_list[0], &sin.sin_addr, hp->h_length);
+		sin.sin_port = rport;
+		if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) >= 0)
+			break;
+		(void)close(s);
+		if (errno == EADDRINUSE) {
+			lport--;
+			continue;
+		}
+		if (errno == ECONNREFUSED && timo <= 16) {
+			(void)sleep(timo);
+			timo *= 2;
+			continue;
+		}
+		if (hp->h_addr_list[1] != NULL) {
+			int oerrno = errno;
+
+			(void)fprintf(stderr, "connect to address %s: ",
+			    inet_ntoa(sin.sin_addr));
+			errno = oerrno;
+			perror(0);
+			hp->h_addr_list++;
+			bcopy(hp->h_addr_list[0], &sin.sin_addr, hp->h_length);
+			(void)fprintf(stderr, "Trying %s...\n",
+			    inet_ntoa(sin.sin_addr));
+			continue;
+		}
+		(void)fprintf(stderr, "%s: %s\n", hp->h_name, strerror(errno));
+		sigsetmask(oldmask);
+		return (-1);
+	}
+	lport--;
+	if (fd2p == 0) {
+		write(s, "", 1);
+		lport = 0;
+	} else {
+		char num[8];
+		int s2 = rresvport(&lport), s3;
+		int len = sizeof(from);
+		int nfds;
+
+		if (s2 < 0)
+			goto bad;
+		listen(s2, 1);
+		(void)snprintf(num, sizeof(num), "%d", lport);
+		if (write(s, num, strlen(num)+1) != strlen(num)+1) {
+			(void)fprintf(stderr,
+			    "rcmd: write (setting up stderr): %s\n",
+			    strerror(errno));
+			(void)close(s2);
+			goto bad;
+		}
+		nfds = max(s, s2)+1;
+		if(nfds > FD_SETSIZE) {
+			fprintf(stderr, "rcmd: too many files\n");
+			(void)close(s2);
+			goto bad;
+		}
+		FD_ZERO(&reads);
+		FD_SET(s, &reads);
+		FD_SET(s2, &reads);
+		errno = 0;
+		if (select(nfds, &reads, 0, 0, 0) < 1 || !FD_ISSET(s2, &reads)){
+			if (errno != 0)
+				(void)fprintf(stderr,
+				    "rcmd: select (setting up stderr): %s\n",
+				    strerror(errno));
+			else
+				(void)fprintf(stderr,
+				"select: protocol failure in circuit setup\n");
+			(void)close(s2);
+			goto bad;
+		}
+		s3 = accept(s2, (struct sockaddr *)&from, &len);
+		(void)close(s2);
+		if (s3 < 0) {
+			(void)fprintf(stderr,
+			    "rcmd: accept: %s\n", strerror(errno));
+			lport = 0;
+			goto bad;
+		}
+		*fd2p = s3;
+		from.sin_port = ntohs((u_short)from.sin_port);
+		if (from.sin_family != AF_INET ||
+		    from.sin_port >= IPPORT_RESERVED ||
+		    from.sin_port < IPPORT_RESERVED / 2) {
+			(void)fprintf(stderr,
+			    "socket: protocol failure in circuit setup.\n");
+			goto bad2;
+		}
+	}
+	(void)write(s, locuser, strlen(locuser)+1);
+	(void)write(s, remuser, strlen(remuser)+1);
+	(void)write(s, cmd, strlen(cmd)+1);
+	if (read(s, &c, 1) != 1) {
+		(void)fprintf(stderr,
+		    "rcmd: %s: %s\n", *ahost, strerror(errno));
+		goto bad2;
+	}
+	if (c != 0) {
+		while (read(s, &c, 1) == 1) {
+			(void)write(STDERR_FILENO, &c, 1);
+			if (c == '\n')
+				break;
+		}
+		goto bad2;
+	}
+	sigsetmask(oldmask);
+	return (s);
+bad2:
+	if (lport)
+		(void)close(*fd2p);
+bad:
+	(void)close(s);
+	sigsetmask(oldmask);
+	return (-1);
+}
+
+int
+rresvport(alport)
+	int *alport;
+{
+	struct sockaddr_in sin;
+	int s;
+
+	sin.sin_family = AF_INET;
+	sin.sin_addr.s_addr = INADDR_ANY;
+	s = socket(AF_INET, SOCK_STREAM, 0);
+	if (s < 0)
+		return (-1);
+	for (;;) {
+		sin.sin_port = htons((u_short)*alport);
+		if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) >= 0)
+			return (s);
+		if (errno != EADDRINUSE) {
+			(void)close(s);
+			return (-1);
+		}
+		(*alport)--;
+		if (*alport == IPPORT_RESERVED/2) {
+			(void)close(s);
+			errno = EAGAIN;		/* close */
+			return (-1);
+		}
+	}
+}
+
+int	__check_rhosts_file = 1;
+char	*__rcmd_errstr;
+
+int
+ruserok(rhost, superuser, ruser, luser)
+	const char *rhost, *ruser, *luser;
+	int superuser;
+{
+	struct hostent *hp;
+	u_long addr;
+	char **ap;
+
+	if ((hp = gethostbyname(rhost)) == NULL)
+		return (-1);
+	for (ap = hp->h_addr_list; *ap; ++ap) {
+		bcopy(*ap, &addr, sizeof(addr));
+		if (iruserok(addr, superuser, ruser, luser) == 0)
+			return (0);
+	}
+	return (-1);
+}
+
+/*
+ * New .rhosts strategy: We are passed an ip address. We spin through
+ * hosts.equiv and .rhosts looking for a match. When the .rhosts only
+ * has ip addresses, we don't have to trust a nameserver.  When it
+ * contains hostnames, we spin through the list of addresses the nameserver
+ * gives us and look for a match.
+ *
+ * Returns 0 if ok, -1 if not ok.
+ */
+int
+iruserok(raddr, superuser, ruser, luser)
+	u_long raddr;
+	int superuser;
+	const char *ruser, *luser;
+{
+	register char *cp;
+	struct stat sbuf;
+	struct passwd *pwd;
+	FILE *hostf;
+	uid_t uid;
+	int first;
+	char pbuf[MAXPATHLEN];
+
+	first = 1;
+	hostf = superuser ? NULL : fopen(_PATH_HEQUIV, "r");
+again:
+	if (hostf) {
+		if (__ivaliduser(hostf, raddr, luser, ruser) == 0) {
+			(void)fclose(hostf);
+			return (0);
+		}
+		(void)fclose(hostf);
+	}
+	if (first == 1 && (__check_rhosts_file || superuser)) {
+		first = 0;
+		if ((pwd = getpwnam(luser)) == NULL)
+			return (-1);
+		(void)strcpy(pbuf, pwd->pw_dir);
+		(void)strcat(pbuf, "/.rhosts");
+
+		/*
+		 * Change effective uid while opening .rhosts.  If root and
+		 * reading an NFS mounted file system, can't read files that
+		 * are protected read/write owner only.
+		 */
+		uid = geteuid();
+		(void)seteuid(pwd->pw_uid);
+		hostf = fopen(pbuf, "r");
+		(void)seteuid(uid);
+
+		if (hostf == NULL)
+			return (-1);
+		/*
+		 * If not a regular file, or is owned by someone other than
+		 * user or root or if writeable by anyone but the owner, quit.
+		 */
+		cp = NULL;
+		if (lstat(pbuf, &sbuf) < 0)
+			cp = ".rhosts lstat failed";
+		else if (!S_ISREG(sbuf.st_mode))
+			cp = ".rhosts not regular file";
+		else if (fstat(fileno(hostf), &sbuf) < 0)
+			cp = ".rhosts fstat failed";
+		else if (sbuf.st_uid && sbuf.st_uid != pwd->pw_uid)
+			cp = "bad .rhosts owner";
+		else if (sbuf.st_mode & (S_IWGRP|S_IWOTH))
+			cp = ".rhosts writeable by other than owner";
+		/* If there were any problems, quit. */
+		if (cp) {
+			__rcmd_errstr = cp;
+			(void)fclose(hostf);
+			return (-1);
+		}
+		goto again;
+	}
+	return (-1);
+}
+
+/*
+ * XXX
+ * Don't make static, used by lpd(8).
+ *
+ * Returns 0 if ok, -1 if not ok.
+ */
+int
+__ivaliduser(hostf, raddr, luser, ruser)
+	FILE *hostf;
+	u_long raddr;
+	const char *luser, *ruser;
+{
+	register char *user, *p;
+	int ch;
+	char buf[MAXHOSTNAMELEN + 128];		/* host + login */
+	char hname[MAXHOSTNAMELEN];
+	struct hostent *hp;
+	/* Presumed guilty until proven innocent. */
+	int userok = 0, hostok = 0;
+#ifdef YP
+	char *ypdomain;
+
+	if (yp_get_default_domain(&ypdomain))
+		ypdomain = NULL;
+#else
+#define	ypdomain NULL
+#endif
+	/* We need to get the damn hostname back for netgroup matching. */
+	if ((hp = gethostbyaddr((char *)&raddr, sizeof(u_long),
+							AF_INET)) == NULL)
+		return (-1);
+	strcpy(hname, hp->h_name);
+
+	while (fgets(buf, sizeof(buf), hostf)) {
+		p = buf;
+		/* Skip lines that are too long. */
+		if (strchr(p, '\n') == NULL) {
+			while ((ch = getc(hostf)) != '\n' && ch != EOF);
+			continue;
+		}
+		if (*p == '\n' || *p == '#') {
+			/* comment... */
+			continue;
+		}
+		while (*p != '\n' && *p != ' ' && *p != '\t' && *p != '\0') {
+			*p = isupper(*p) ? tolower(*p) : *p;
+			p++;
+		}
+		if (*p == ' ' || *p == '\t') {
+			*p++ = '\0';
+			while (*p == ' ' || *p == '\t')
+				p++;
+			user = p;
+			while (*p != '\n' && *p != ' ' &&
+			    *p != '\t' && *p != '\0')
+				p++;
+		} else
+			user = p;
+		*p = '\0';
+		/*
+		 * Do +/- and +@/-@ checking. This looks really nasty,
+		 * but it matches SunOS's behavior so far as I can tell.
+		 */
+		switch(buf[0]) {
+		case '+':
+			if (!buf[1]) {     /* '+' matches all hosts */
+				hostok = 1;
+				break;
+			}
+			if (buf[1] == '@')  /* match a host by netgroup */
+				hostok = innetgr((char *)&buf[2],
+					(char *)&hname, NULL, ypdomain);
+			else		/* match a host by addr */
+				hostok = __icheckhost(raddr,(char *)&buf[1]);
+			break;
+		case '-':     /* reject '-' hosts and all their users */
+			if (buf[1] == '@') {
+				if (innetgr((char *)&buf[2],
+					      (char *)&hname, NULL, ypdomain))
+					return(-1);
+			} else {
+				if (__icheckhost(raddr,(char *)&buf[1]))
+					return(-1);
+			}
+			break;
+		default:  /* if no '+' or '-', do a simple match */
+			hostok = __icheckhost(raddr, buf);
+			break;
+		}
+		switch(*user) {
+		case '+':
+			if (!*(user+1)) {      /* '+' matches all users */
+				userok = 1;
+				break;
+			}
+			if (*(user+1) == '@')  /* match a user by netgroup */
+				userok = innetgr(user+2, NULL, ruser, ypdomain);
+			else	   /* match a user by direct specification */
+				userok = !(strcmp(ruser, user+1));
+			break;
+		case '-': 		/* if we matched a hostname, */
+			if (hostok) {   /* check for user field rejections */
+				if (!*(user+1))
+					return(-1);
+				if (*(user+1) == '@') {
+					if (innetgr(user+2, NULL,
+							ruser, ypdomain))
+						return(-1);
+				} else {
+					if (!strcmp(ruser, user+1))
+						return(-1);
+				}
+			}
+			break;
+		default:	/* no rejections: try to match the user */
+			if (hostok)
+				userok = !(strcmp(ruser,*user ? user : luser));
+			break;
+		}
+		if (hostok && userok)
+			return(0);
+	}
+	return (-1);
+}
+
+/*
+ * Returns "true" if match, 0 if no match.
+ */
+static int
+__icheckhost(raddr, lhost)
+	u_long raddr;
+	register char *lhost;
+{
+	register struct hostent *hp;
+	register u_long laddr;
+	register char **pp;
+
+	/* Try for raw ip address first. */
+	if (isdigit(*lhost) && (long)(laddr = inet_addr(lhost)) != -1)
+		return (raddr == laddr);
+
+	/* Better be a hostname. */
+	if ((hp = gethostbyname(lhost)) == NULL)
+		return (0);
+
+	/* Spin through ip addresses. */
+	for (pp = hp->h_addr_list; *pp; ++pp)
+		if (!bcmp(&raddr, *pp, sizeof(u_long)))
+			return (1);
+
+	/* No match. */
+	return (0);
+}
diff --git a/lib/libc/net/recv.c b/lib/libc/net/recv.c
new file mode 100644
index 0000000..65ec9d4
--- /dev/null
+++ b/lib/libc/net/recv.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)recv.c	8.2 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <stddef.h>
+
+ssize_t
+recv(s, buf, len, flags)
+	int s, flags;
+	size_t len;
+	void *buf;
+{
+	return (recvfrom(s, buf, len, flags, NULL, 0));
+}
diff --git a/lib/libc/net/res_comp.c b/lib/libc/net/res_comp.c
index 6250f8f..a78a798 100644
--- a/lib/libc/net/res_comp.c
+++ b/lib/libc/net/res_comp.c
@@ -1,9 +1,7 @@
-/*
- * ++Copyright++ 1985, 1993
- * -
+/*-
  * Copyright (c) 1985, 1993
- *    The Regents of the University of California.  All rights reserved.
- * 
+ *	The Regents of the University of California.  All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ -14,12 +12,12 @@
  *    documentation and/or other materials provided with the distribution.
  * 3. All advertising materials mentioning features or use of this software
  *    must display the following acknowledgement:
- * 	This product includes software developed by the University of
- * 	California, Berkeley and its contributors.
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
@@ -33,14 +31,14 @@
  * SUCH DAMAGE.
  * -
  * Portions Copyright (c) 1993 by Digital Equipment Corporation.
- * 
+ *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies, and that
  * the name of Digital Equipment Corporation not be used in advertising or
  * publicity pertaining to distribution of the document or software without
  * specific, written prior permission.
- * 
+ *
  * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
  * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
@@ -55,7 +53,7 @@
 
 #if defined(LIBC_SCCS) && !defined(lint)
 static char sccsid[] = "@(#)res_comp.c	8.1 (Berkeley) 6/4/93";
-static char rcsid[] = "$Id: res_comp.c,v 8.3 1995/12/06 20:34:50 vixie Exp $";
+static char rcsid[] = "$Id: res_comp.c,v 1.2 1994/09/25 02:12:32 pst Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <sys/param.h>
@@ -66,12 +64,8 @@ static char rcsid[] = "$Id: res_comp.c,v 8.3 1995/12/06 20:34:50 vixie Exp $";
 #include <resolv.h>
 #include <ctype.h>
 
-#if defined(BSD) && (BSD >= 199103)
-# include <unistd.h>
-# include <string.h>
-#else
-# include "../conf/portability.h"
-#endif
+#include <unistd.h>
+#include <string.h>
 
 static int	dn_find __P((u_char *exp_dn, u_char *msg,
 			     u_char **dnptrs, u_char **lastdnptr));
@@ -101,7 +95,7 @@ dn_expand(msg, eomorig, comp_dn, exp_dn, length)
 	/*
 	 * fetch next label in domain name
 	 */
-	while (n = *cp++) {
+	while ((n = *cp++)) {
 		/*
 		 * Check for indirection
 		 */
@@ -116,14 +110,14 @@ dn_expand(msg, eomorig, comp_dn, exp_dn, length)
 				return (-1);
 			checked += n + 1;
 			while (--n >= 0) {
-				if (((c = *cp++) == '.') || (c == '\\')) {
+				if ((c = *cp++) == '.') {
 					if (dn + n + 2 >= eom)
 						return (-1);
 					*dn++ = '\\';
 				}
 				*dn++ = c;
 				if (cp >= eomorig)	/* out of range */
-					return (-1);
+					return(-1);
 			}
 			break;
 
@@ -132,7 +126,7 @@ dn_expand(msg, eomorig, comp_dn, exp_dn, length)
 				len = cp - comp_dn + 1;
 			cp = msg + (((n & 0x3f) << 8) | (*cp & 0xff));
 			if (cp < msg || cp >= eomorig)	/* out of range */
-				return (-1);
+				return(-1);
 			checked += 2;
 			/*
 			 * Check for loops in the compressed name;
@@ -268,12 +262,12 @@ __dn_skipname(comp_dn, eom)
 			cp++;
 			break;
 		default:		/* illegal type */
-			return (-1);
+			return -1;
 		}
 		break;
 	}
 	if (cp > eom)
-		return (-1);
+		return -1;
 	return (cp - comp_dn);
 }
 
@@ -304,7 +298,7 @@ dn_find(exp_dn, msg, dnptrs, lastdnptr)
 	for (cpp = dnptrs; cpp < lastdnptr; cpp++) {
 		dn = exp_dn;
 		sp = cp = *cpp;
-		while (n = *cp++) {
+		while ((n = *cp++)) {
 			/*
 			 * check for indirection
 			 */
@@ -324,12 +318,11 @@ dn_find(exp_dn, msg, dnptrs, lastdnptr)
 					continue;
 				goto next;
 
-			case INDIR_MASK:	/* indirection */
-				cp = msg + (((n & 0x3f) << 8) | *cp);
-				break;
-
 			default:	/* illegal type */
 				return (-1);
+
+			case INDIR_MASK:	/* indirection */
+				cp = msg + (((n & 0x3f) << 8) | *cp);
 			}
 		}
 		if (*dn == '\0')
@@ -340,7 +333,11 @@ dn_find(exp_dn, msg, dnptrs, lastdnptr)
 }
 
 /*
- * Routines to insert/extract short/long's.
+ * Routines to insert/extract short/long's. Must account for byte
+ * order and non-alignment problems. This code at least has the
+ * advantage of being portable.
+ *
+ * used by sendmail.
  */
 
 u_int16_t
@@ -353,18 +350,6 @@ _getshort(msgp)
 	return (u);
 }
 
-#ifdef NeXT
-/*
- * nExt machines have some funky library conventions, which we must maintain.
- */
-u_int16_t
-res_getshort(msgp)
-	register const u_char *msgp;
-{
-	return (_getshort(msgp));
-}
-#endif
-
 u_int32_t
 _getlong(msgp)
 	register const u_char *msgp;
@@ -394,36 +379,3 @@ __putlong(l, msgp)
 {
 	PUTLONG(l, msgp);
 }
-
-#ifdef ultrix
-/* ultrix 4.0 had some icky packaging in its libc.a.  alias for it here.
- * there is more gunk of this kind over in res_debug.c.
- */
-#undef putshort
-void
-#if defined(__STDC__) || defined(__cplusplus)
-putshort(register u_short s, register u_char *msgp)
-#else
-putshort(s, msgp)
-	register u_short s;
-	register u_char *msgp;
-#endif
-{
-	__putshort(s, msgp);
-}
-#undef putlong
-void
-putlong(l, msgp)
-	register u_int32_t l;
-	register u_char *msgp;
-{
-	__putlong(l, msgp);
-}
- 
-#undef dn_skipname
-dn_skipname(comp_dn, eom)
-	const u_char *comp_dn, *eom;
-{
-	return (__dn_skipname(comp_dn, eom));
-}
-#endif /* Ultrix 4.0 hackery */
diff --git a/lib/libc/net/res_config.h b/lib/libc/net/res_config.h
new file mode 100644
index 0000000..a1339d9
--- /dev/null
+++ b/lib/libc/net/res_config.h
@@ -0,0 +1,7 @@
+#define	DEBUG	1	/* enable debugging code (needed for dig) */
+#undef	ALLOW_T_UNSPEC	/* enable the "unspec" RR type for old athena */
+#define	RESOLVSORT	/* allow sorting of addresses in gethostbyname */
+#undef	RFC1535		/* comply with RFC1535 */
+#undef	ALLOW_UPDATES	/* destroy your system security */
+#undef	USELOOPBACK	/* res_init() bind to localhost */
+#undef	SUNSECURITY	/* verify gethostbyaddr() calls - WE DONT NEED IT  */
diff --git a/lib/libc/net/res_debug.c b/lib/libc/net/res_debug.c
index aff28a4..b0a82b2 100644
--- a/lib/libc/net/res_debug.c
+++ b/lib/libc/net/res_debug.c
@@ -1,9 +1,7 @@
-/*
- * ++Copyright++ 1985, 1990, 1993
- * -
+/*-
  * Copyright (c) 1985, 1990, 1993
- *    The Regents of the University of California.  All rights reserved.
- * 
+ *	The Regents of the University of California.  All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ -14,12 +12,12 @@
  *    documentation and/or other materials provided with the distribution.
  * 3. All advertising materials mentioning features or use of this software
  *    must display the following acknowledgement:
- * 	This product includes software developed by the University of
- * 	California, Berkeley and its contributors.
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
@@ -33,14 +31,14 @@
  * SUCH DAMAGE.
  * -
  * Portions Copyright (c) 1993 by Digital Equipment Corporation.
- * 
+ *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies, and that
  * the name of Digital Equipment Corporation not be used in advertising or
  * publicity pertaining to distribution of the document or software without
  * specific, written prior permission.
- * 
+ *
  * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
  * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
@@ -55,29 +53,59 @@
 
 #if defined(LIBC_SCCS) && !defined(lint)
 static char sccsid[] = "@(#)res_debug.c	8.1 (Berkeley) 6/4/93";
-static char rcsid[] = "$Id: res_debug.c,v 8.7 1995/12/22 10:20:39 vixie Exp $";
+static char rcsid[] = "$Id: res_debug.c,v 1.4 1995/08/20 20:02:48 peter Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <sys/param.h>
 #include <netinet/in.h>
+#include <netiso/iso.h>
 #include <arpa/inet.h>
 #include <arpa/nameser.h>
 
 #include <stdio.h>
-#include <netdb.h>
 #include <resolv.h>
-#if defined(BSD) && (BSD >= 199103)
-# include <string.h>
-#else
-# include "../conf/portability.h"
-#endif
-
-#if defined(USE_OPTIONS_H)
-# include "../conf/options.h"
-#endif
+#include <string.h>
+#include <netdb.h>
 
-extern const char *_res_opcodes[];
-extern const char *_res_resultcodes[];
+#include "res_config.h"
+
+const char *_res_opcodes[] = {
+	"QUERY",
+	"IQUERY",
+	"CQUERYM",
+	"CQUERYU",	/* experimental */
+	"NOTIFY",	/* experimental */
+	"5",
+	"6",
+	"7",
+	"8",
+	"UPDATEA",
+	"UPDATED",
+	"UPDATEDA",
+	"UPDATEM",
+	"UPDATEMA",
+	"ZONEINIT",
+	"ZONEREF",
+};
+
+const char *_res_resultcodes[] = {
+	"NOERROR",
+	"FORMERR",
+	"SERVFAIL",
+	"NXDOMAIN",
+	"NOTIMP",
+	"REFUSED",
+	"6",
+	"7",
+	"8",
+	"9",
+	"10",
+	"11",
+	"12",
+	"13",
+	"14",
+	"NOCHANGE",
+};
 
 /* XXX: we should use getservbyport() instead. */
 static const char *
@@ -175,13 +203,13 @@ do_rrset(msg, len, cp, cnt, pflag, file, hs)
 	 * Print answer records.
 	 */
 	sflag = (_res.pfcode & pflag);
-	if (n = ntohs(cnt)) {
+	if ((n = ntohs(cnt))) {
 		if ((!_res.pfcode) ||
 		    ((sflag) && (_res.pfcode & RES_PRF_HEAD1)))
 			fprintf(file, hs);
 		while (--n >= 0) {
 			if ((!_res.pfcode) || sflag) {
-				cp = p_rr(cp, msg, file);
+			cp = p_rr(cp, msg, file);
 			} else {
 				unsigned int dlen;
 				cp += __dn_skipname(cp, cp + MAXCDNAME);
@@ -209,18 +237,6 @@ __p_query(msg)
 	__fp_query(msg, stdout);
 }
 
-#ifdef ultrix
-/* ultrix 4.0's packaging has some icky packaging.  alias for it here.
- * there is more junk of this kind over in res_comp.c.
- */
-void
-p_query(msg)
-	const u_char *msg;
-{
-	__p_query(msg);
-}
-#endif
-
 /*
  * Print the current options.
  * This is intended to be primarily a debugging routine.
@@ -274,10 +290,9 @@ __fp_nquery(msg, len, file)
 			ntohs(hp->id));
 		putc('\n', file);
 	}
-	if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX))
-		putc(';', file);
+	putc(';', file);
 	if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD2)) {
-		fprintf(file, "; flags:");
+		fprintf(file,"; flags:");
 		if (hp->qr)
 			fprintf(file, " qr");
 		if (hp->aa)
@@ -295,7 +310,7 @@ __fp_nquery(msg, len, file)
 		fprintf(file, ", Auth: %d", ntohs(hp->nscount));
 		fprintf(file, ", Addit: %d", ntohs(hp->arcount));
 	}
-	if ((!_res.pfcode) || (_res.pfcode & 
+	if ((!_res.pfcode) || (_res.pfcode &
 		(RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) {
 		putc('\n',file);
 	}
@@ -304,23 +319,11 @@ __fp_nquery(msg, len, file)
 	 */
 	if (n = ntohs(hp->qdcount)) {
 		if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
-			fprintf(file, ";; QUESTIONS:\n");
+			fprintf(file,";; QUESTIONS:\n");
 		while (--n >= 0) {
-			if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
-				fprintf(file, ";;\t");
+			fprintf(file,";;\t");
 			TruncTest(cp);
-			if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
-				cp = p_cdnname(cp, msg, len, file);
-			else {
-				int n;
-				char name[MAXDNAME];
-
-				if ((n = dn_expand(msg, msg+len, cp, name,
-						sizeof name)) < 0)
-					cp = NULL;
-				else
-					cp += n;
-			}
+			cp = p_cdnname(cp, msg, len, file);
 			ErrorTest(cp);
 			TruncTest(cp);
 			if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
@@ -332,8 +335,7 @@ __fp_nquery(msg, len, file)
 				fprintf(file, ", class = %s\n",
 					__p_class(_getshort((u_char*)cp)));
 			cp += INT16SZ;
-			if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
-				putc('\n', file);
+			putc('\n', file);
 		}
 	}
 	/*
@@ -434,6 +436,7 @@ __p_rr(cp, msg, file)
 {
 	int type, class, dlen, n, c;
 	struct in_addr inaddr;
+	struct iso_addr isoa;
 	const u_char *cp1, *cp2;
 	u_int32_t tmpttl, t;
 	int lcnt;
@@ -468,7 +471,7 @@ __p_rr(cp, msg, file)
 		case C_HS:
 			bcopy(cp, (char *)&inaddr, INADDRSZ);
 			if (dlen == 4) {
-				fprintf(file, "\t%s", inet_ntoa(inaddr));
+				fprintf(file,"\t%s", inet_ntoa(inaddr));
 				cp += dlen;
 			} else if (dlen == 7) {
 				char *address;
@@ -504,11 +507,11 @@ __p_rr(cp, msg, file)
 	case T_ISDN:
 		cp2 = cp + dlen;
 		if (n = *cp++) {
-			fprintf(file, "\t%.*s", n, cp);
+			fprintf(file,"\t%.*s", n, cp);
 			cp += n;
 		}
 		if ((cp < cp2) && (n = *cp++)) {
-			fprintf(file, "\t%.*s", n, cp);
+			fprintf(file,"\t%.*s", n, cp);
 			cp += n;
 		} else if (type == T_HINFO)
 			fprintf(file, "\n;; *** Warning *** OS-type missing");
@@ -541,7 +544,7 @@ __p_rr(cp, msg, file)
 	case T_MX:
 	case T_AFSDB:
 	case T_RT:
-		fprintf(file, "\t%d ", _getshort((u_char*)cp));
+		fprintf(file,"\t%d ", _getshort((u_char*)cp));
 		cp += INT16SZ;
 		if ((cp = p_fqname(cp, msg, file)) == NULL)
 			return (NULL);
@@ -557,7 +560,7 @@ __p_rr(cp, msg, file)
 			return (NULL);
 		break;
 
-	case T_TXT:
+  	case T_TXT:
 	case T_X25:
 		(void) fputs("\t\"", file);
 		cp2 = cp1 + dlen;
@@ -572,12 +575,16 @@ __p_rr(cp, msg, file)
 			}
 		}
 		putc('"', file);
-		break;
-
-	case T_NSAP:
-		(void) fprintf(file, "\t%s", inet_nsap_ntoa(dlen, cp, NULL));
+  		break;
+
+  	case T_NSAP:
+		isoa.isoa_len = dlen;
+		if (isoa.isoa_len > sizeof(isoa.isoa_genaddr))
+			isoa.isoa_len = sizeof(isoa.isoa_genaddr);
+		bcopy(cp, isoa.isoa_genaddr, isoa.isoa_len);
+		(void) fprintf(file, "\t%s", iso_ntoa(&isoa));
 		cp += dlen;
-		break;
+  		break;
 
 	case T_MINFO:
 	case T_RP:
@@ -598,7 +605,7 @@ __p_rr(cp, msg, file)
 	case T_UID:
 	case T_GID:
 		if (dlen == 4) {
-			fprintf(file, "\t%u", _getlong((u_char*)cp));
+			fprintf(file,"\t%u", _getlong((u_char*)cp));
 			cp += INT32SZ;
 		}
 		break;
@@ -617,7 +624,7 @@ __p_rr(cp, msg, file)
 		while (cp < cp1 + dlen) {
 			c = *cp++;
 			do {
-				if (c & 0200) {
+ 				if (c & 0200) {
 					if (lcnt == 0) {
 						fputs("\n\t\t\t", file);
 						lcnt = 5;
@@ -626,7 +633,7 @@ __p_rr(cp, msg, file)
 					putc(' ', file);
 					lcnt--;
 				}
-				c <<= 1;
+ 				c <<= 1;
 			} while (++n & 07);
 		}
 		putc(')', file);
@@ -650,7 +657,7 @@ __p_rr(cp, msg, file)
 #endif /* ALLOW_T_UNSPEC */
 
 	default:
-		fprintf(file, "\t?%d?", type);
+		fprintf(file,"\t?%d?", type);
 		cp += dlen;
 	}
 #if 0
@@ -659,7 +666,7 @@ __p_rr(cp, msg, file)
 	putc('\n', file);
 #endif
 	if (cp - cp1 != dlen) {
-		fprintf(file, ";; packet size error (found %d, dlen was %d)\n",
+		fprintf(file,";; packet size error (found %d, dlen was %d)\n",
 			cp - cp1, dlen);
 		cp = NULL;
 	}
diff --git a/lib/libc/net/res_init.c b/lib/libc/net/res_init.c
index c1f120d..1fff1dd 100644
--- a/lib/libc/net/res_init.c
+++ b/lib/libc/net/res_init.c
@@ -1,9 +1,7 @@
-/*
- * ++Copyright++ 1985, 1989, 1993
- * -
+/*-
  * Copyright (c) 1985, 1989, 1993
- *    The Regents of the University of California.  All rights reserved.
- * 
+ *	The Regents of the University of California.  All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ -14,12 +12,12 @@
  *    documentation and/or other materials provided with the distribution.
  * 3. All advertising materials mentioning features or use of this software
  *    must display the following acknowledgement:
- * 	This product includes software developed by the University of
- * 	California, Berkeley and its contributors.
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
@@ -33,14 +31,14 @@
  * SUCH DAMAGE.
  * -
  * Portions Copyright (c) 1993 by Digital Equipment Corporation.
- * 
+ *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies, and that
  * the name of Digital Equipment Corporation not be used in advertising or
  * publicity pertaining to distribution of the document or software without
  * specific, written prior permission.
- * 
+ *
  * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
  * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
@@ -55,7 +53,7 @@
 
 #if defined(LIBC_SCCS) && !defined(lint)
 static char sccsid[] = "@(#)res_init.c	8.1 (Berkeley) 6/7/93";
-static char rcsid[] = "$Id: res_init.c,v 8.3 1995/06/29 09:26:28 vixie Exp $";
+static char rcsid[] = "$Id: res_init.c,v 1.5 1995/08/20 20:02:52 peter Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <sys/param.h>
@@ -68,46 +66,11 @@ static char rcsid[] = "$Id: res_init.c,v 8.3 1995/06/29 09:26:28 vixie Exp $";
 #include <stdio.h>
 #include <ctype.h>
 #include <resolv.h>
-#if defined(BSD) && (BSD >= 199103)
-# include <unistd.h>
-# include <stdlib.h>
-# include <string.h>
-#else
-# include "../conf/portability.h"
-#endif
-
-/*-------------------------------------- info about "sortlist" --------------
- * Marc Majka		1994/04/16
- * Allan Nathanson	1994/10/29 (BIND 4.9.3.x)
- *
- * NetInfo resolver configuration directory support.
- *
- * Allow a NetInfo directory to be created in the hierarchy which
- * contains the same information as the resolver configuration file.
- *
- * - The local domain name is stored as the value of the "domain" property.
- * - The Internet address(es) of the name server(s) are stored as values
- *   of the "nameserver" property.
- * - The name server addresses are stored as values of the "nameserver"
- *   property.
- * - The search list for host-name lookup is stored as values of the
- *   "search" property.
- * - The sortlist comprised of IP address netmask pairs are stored as
- *   values of the "sortlist" property. The IP address and optional netmask
- *   should be seperated by a slash (/) or ampersand (&) character.
- * - Internal resolver variables can be set from the value of the "options"
- *   property.
- */
-#if defined(NeXT)
-#  include <netinfo/ni.h>
-#  define NI_PATH_RESCONF "/locations/resolver"
-#  define NI_TIMEOUT 10
-static int netinfo_res_init __P((int *haveenv, int *havesearch));
-#endif
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
 
-#if defined(USE_OPTIONS_H)
-# include "../conf/options.h"
-#endif
+#include "res_config.h"
 
 static void res_setoptions __P((char *, char *));
 
@@ -117,10 +80,6 @@ static const char sort_mask[] = "/&";
 static u_int32_t net_mask __P((struct in_addr));
 #endif
 
-#if !defined(isascii)	/* XXX - could be a function */
-# define isascii(c) (!(c & 0200))
-#endif
-
 /*
  * Resolver state default settings.
  */
@@ -137,7 +96,7 @@ struct __res_state _res;
  * since it was noted that INADDR_ANY actually meant ``the first interface
  * you "ifconfig"'d at boot time'' and if this was a SLIP or PPP interface,
  * it had to be "up" in order for you to reach your own name server.  It
- * was later decided that since the recommended practice is to always 
+ * was later decided that since the recommended practice is to always
  * install local static routes through 127.0.0.1 for all your network
  * interfaces, that we could solve this problem without a code change.
  *
@@ -249,9 +208,6 @@ res_init()
 	(line[sizeof(name) - 1] == ' ' || \
 	 line[sizeof(name) - 1] == '\t'))
 
-#ifdef	NeXT
-	if (netinfo_res_init(&haveenv, &havesearch) == 0)
-#endif
 	if ((fp = fopen(_PATH_RESCONF, "r")) != NULL) {
 	    /* read the config file */
 	    while (fgets(buf, sizeof(buf), fp) != NULL) {
@@ -267,7 +223,8 @@ res_init()
 			    cp++;
 		    if ((*cp == '\0') || (*cp == '\n'))
 			    continue;
-		    strncpy(_res.defdname, cp, sizeof(_res.defdname) - 1);
+		    (void)strncpy(_res.defdname, cp,
+				  sizeof(_res.defdname) - 1);
 		    if ((cp = strpbrk(_res.defdname, " \t\n")) != NULL)
 			    *cp = '\0';
 		    havesearch = 0;
@@ -282,7 +239,8 @@ res_init()
 			    cp++;
 		    if ((*cp == '\0') || (*cp == '\n'))
 			    continue;
-		    strncpy(_res.defdname, cp, sizeof(_res.defdname) - 1);
+		    (void)strncpy(_res.defdname, cp,
+				  sizeof(_res.defdname) - 1);
 		    if ((cp = strchr(_res.defdname, '\n')) != NULL)
 			    *cp = '\0';
 		    /*
@@ -311,7 +269,7 @@ res_init()
 		}
 		/* read nameservers to query */
 		if (MATCH(buf, "nameserver") && nserv < MAXNS) {
-		    struct in_addr a;
+		   struct in_addr a;
 
 		    cp = buf + sizeof("nameserver") - 1;
 		    while (*cp == ' ' || *cp == '\t')
@@ -337,7 +295,7 @@ res_init()
 			    break;
 			net = cp;
 			while (*cp && !ISSORTMASK(*cp) && *cp != ';' &&
-			       isascii(*cp) && !isspace(*cp))
+			    isascii(*cp) && !isspace(*cp))
 				cp++;
 			n = *cp;
 			*cp = 0;
@@ -354,11 +312,11 @@ res_init()
 				if (inet_aton(net, &a)) {
 				    _res.sort_list[nsort].mask = a.s_addr;
 				} else {
-				    _res.sort_list[nsort].mask = 
+				    _res.sort_list[nsort].mask =
 					net_mask(_res.sort_list[nsort].addr);
 				}
 			    } else {
-				_res.sort_list[nsort].mask = 
+				_res.sort_list[nsort].mask =
 				    net_mask(_res.sort_list[nsort].addr);
 			    }
 			    nsort++;
@@ -373,7 +331,7 @@ res_init()
 		    continue;
 		}
 	    }
-	    if (nserv > 1) 
+	    if (nserv > 1)
 		_res.nscount = nserv;
 #ifdef RESOLVSORT
 	    _res.nsort = nsort;
@@ -393,7 +351,7 @@ res_init()
 
 #ifndef RFC1535
 		dots = 0;
-		for (cp = _res.defdname; *cp; cp++)
+		for (cp = _res.defdname;  *cp;  cp++)
 			dots += (*cp == '.');
 
 		cp = _res.defdname;
@@ -413,7 +371,7 @@ res_init()
 			printf(";;\t..END..\n");
 		}
 #endif /* DEBUG */
-#endif /* !RFC1535 */
+#endif /*!RFC1535*/
 	}
 
 	if ((cp = getenv("RES_OPTIONS")) != NULL)
@@ -439,7 +397,7 @@ res_setoptions(options, source)
 		while (*cp == ' ' || *cp == '\t')
 			cp++;
 		/* search for and process individual options */
-		if (!strncmp(cp, "ndots:", sizeof("ndots:") - 1)) {
+		if (!strncmp(cp, "ndots:", sizeof("ndots:")-1)) {
 			i = atoi(cp + sizeof("ndots:") - 1);
 			if (i <= RES_MAXNDOTS)
 				_res.ndots = i;
@@ -449,7 +407,7 @@ res_setoptions(options, source)
 			if (_res.options & RES_DEBUG)
 				printf(";;\tndots=%d\n", _res.ndots);
 #endif
-		} else if (!strncmp(cp, "debug", sizeof("debug") - 1)) {
+		} else if (!strncmp(cp, "debug", sizeof("debug")-1)) {
 #ifdef DEBUG
 			if (!(_res.options & RES_DEBUG)) {
 				printf(";; res_setoptions(\"%s\", \"%s\")..\n",
@@ -473,171 +431,16 @@ static u_int32_t
 net_mask(in)		/* XXX - should really use system's version of this */
 	struct in_addr in;
 {
-	register u_int32_t i = ntohl(in.s_addr);
+        register u_int32_t i = ntohl(in.s_addr);
 
-	if (IN_CLASSA(i))
-		return (htonl(IN_CLASSA_NET));
-	else if (IN_CLASSB(i))
-		return (htonl(IN_CLASSB_NET));
+        if (IN_CLASSA(i))
+                return (htonl(IN_CLASSA_NET));
+        else if (IN_CLASSB(i))
+                return (htonl(IN_CLASSB_NET));
 	return (htonl(IN_CLASSC_NET));
 }
 #endif
 
-#ifdef	NeXT
-static int
-netinfo_res_init(haveenv, havesearch)
-	int *haveenv;
-	int *havesearch;
-{
-    register	int n;
-    void	*domain, *parent;
-    ni_id	dir;
-    ni_status	status;
-    ni_namelist	nl;
-    int		nserv = 0;
-#ifdef RESOLVSORT
-    int		nsort = 0;
-#endif
-
-    status = ni_open(NULL, ".", &domain);
-    if (status == NI_OK) {
-	ni_setreadtimeout(domain, NI_TIMEOUT);
-	ni_setabort(domain, 1);
-
-	/* climb the NetInfo hierarchy to find a resolver directory */
-	while (status == NI_OK) {
-	    status = ni_pathsearch(domain, &dir, NI_PATH_RESCONF);
-	    if (status == NI_OK) {
-	    /* found a resolver directory */
-
-		if (*haveenv == 0) {
-		    /* get the default domain name */
-		    status = ni_lookupprop(domain, &dir, "domain", &nl);
-		    if (status == NI_OK && nl.ni_namelist_len > 0) {
-			(void)strncpy(_res.defdname,
-				      nl.ni_namelist_val[0],
-				      sizeof(_res.defdname) - 1);
-			_res.defdname[sizeof(_res.defdname) - 1] = '\0';
-			ni_namelist_free(&nl);
-			*havesearch = 0;
-		    }
-
-		    /* get search list */
-		    status = ni_lookupprop(domain, &dir, "search", &nl);
-		    if (status == NI_OK && nl.ni_namelist_len > 0) {
-			(void)strncpy(_res.defdname,
-				      nl.ni_namelist_val[0],
-				      sizeof(_res.defdname) - 1);
-			_res.defdname[sizeof(_res.defdname) - 1] = '\0';
-			/* copy  */
-			for (n = 0;
-			     n < nl.ni_namelist_len && n < MAXDNSRCH;
-			     n++) {
-			     /* duplicate up to MAXDNSRCH servers */
-			     char *cp = nl.ni_namelist_val[n];
-			    _res.dnsrch[n] =
-				strcpy((char *)malloc(strlen(cp) + 1), cp);
-			}
-			ni_namelist_free(&nl);
-			*havesearch = 1;
-		    }
-		}
-
-		/* get list of nameservers */
-		status = ni_lookupprop(domain, &dir, "nameserver", &nl);
-		if (status == NI_OK && nl.ni_namelist_len > 0) {
-		    /* copy up to MAXNS servers */
-		    for (n = 0;
-		         n < nl.ni_namelist_len && nserv < MAXNS;
-			 n++) {
-			struct in_addr a;
-
-			if (inet_aton(nl.ni_namelist_val[n], &a)) {
-			    _res.nsaddr_list[nserv].sin_addr = a;
-			    _res.nsaddr_list[nserv].sin_family = AF_INET;
-			    _res.nsaddr_list[nserv].sin_port =
-				htons(NAMESERVER_PORT);
-			    nserv++;
-			}
-		    }
-		    ni_namelist_free(&nl);
-		}
-		
-		if (nserv > 1)
-		    _res.nscount = nserv;
-
-#ifdef RESOLVSORT
-		/* get sort order */
-		status = ni_lookupprop(domain, &dir, "sortlist", &nl);
-		if (status == NI_OK && nl.ni_namelist_len > 0) {
-
-		    /* copy up to MAXRESOLVSORT address/netmask pairs */
-		    for (n = 0;
-		         n < nl.ni_namelist_len && nsort < MAXRESOLVSORT;
-			 n++) {
-			char ch;
-			char *cp;
-			const char *sp;
-			struct in_addr a;
-
-			cp = NULL;
-			for (sp = sort_mask; *sp; sp++) {
-				char *cp1;
-				cp1 = strchr(nl.ni_namelist_val[n], *sp);
-				if (cp && cp1)
-					cp = (cp < cp1)? cp : cp1;
-				else if (cp1)
-					cp = cp1;
-			}
-			if (cp != NULL) {
-				ch = *cp;
-				*cp = '\0';
-				break;
-			}
-			if (inet_aton(nl.ni_namelist_val[n], &a)) {
-			    _res.sort_list[nsort].addr = a;
-			    if (*cp && ISSORTMASK(ch)) {
-			    	*cp++ = ch;
-			        if (inet_aton(cp, &a)) {
-				    _res.sort_list[nsort].mask = a.s_addr;
-				} else {
-				    _res.sort_list[nsort].mask =
-					net_mask(_res.sort_list[nsort].addr);
-				}
-			    } else {
-				_res.sort_list[nsort].mask =
-				    net_mask(_res.sort_list[nsort].addr);
-			    }
-			    nsort++;
-			}
-		    }
-		    ni_namelist_free(&nl);
-		}
-
-		_res.nsort = nsort;
-#endif
-
-		/* get resolver options */
-		status = ni_lookupprop(domain, &dir, "options", &nl);
-		if (status == NI_OK && nl.ni_namelist_len > 0) {
-		    res_setoptions(nl.ni_namelist_val[0], "conf");
-		    ni_namelist_free(&nl);
-		}
-
-		ni_free(domain);
-		return(1);	/* using DNS configuration from NetInfo */
-	    }
-
-	    status = ni_open(domain, "..", &parent);
-	    ni_free(domain);
-	    if (status == NI_OK)
-		domain = parent;
-	}
-    }
-    return(0);	/* if not using DNS configuration from NetInfo */
-}
-#endif	/* NeXT */
-
 u_int16_t
 res_randomid()
 {
diff --git a/lib/libc/net/res_mkquery.c b/lib/libc/net/res_mkquery.c
index 76786db..61d5825e 100644
--- a/lib/libc/net/res_mkquery.c
+++ b/lib/libc/net/res_mkquery.c
@@ -1,9 +1,7 @@
-/*
- * ++Copyright++ 1985, 1993
- * -
+/*-
  * Copyright (c) 1985, 1993
- *    The Regents of the University of California.  All rights reserved.
- * 
+ *	The Regents of the University of California.  All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ -14,12 +12,12 @@
  *    documentation and/or other materials provided with the distribution.
  * 3. All advertising materials mentioning features or use of this software
  *    must display the following acknowledgement:
- * 	This product includes software developed by the University of
- * 	California, Berkeley and its contributors.
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
@@ -33,14 +31,14 @@
  * SUCH DAMAGE.
  * -
  * Portions Copyright (c) 1993 by Digital Equipment Corporation.
- * 
+ *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies, and that
  * the name of Digital Equipment Corporation not be used in advertising or
  * publicity pertaining to distribution of the document or software without
  * specific, written prior permission.
- * 
+ *
  * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
  * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
@@ -55,7 +53,7 @@
 
 #if defined(LIBC_SCCS) && !defined(lint)
 static char sccsid[] = "@(#)res_mkquery.c	8.1 (Berkeley) 6/4/93";
-static char rcsid[] = "$Id: res_mkquery.c,v 8.3 1995/06/29 09:26:28 vixie Exp $";
+static char rcsid[] = "$Id: res_mkquery.c,v 1.5 1995/08/20 20:02:56 peter Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <sys/param.h>
@@ -63,17 +61,11 @@ static char rcsid[] = "$Id: res_mkquery.c,v 8.3 1995/06/29 09:26:28 vixie Exp $"
 #include <arpa/nameser.h>
 
 #include <stdio.h>
-#include <netdb.h>
 #include <resolv.h>
-#if defined(BSD) && (BSD >= 199103)
-# include <string.h>
-#else
-# include "../conf/portability.h"
-#endif
+#include <string.h>
+#include <netdb.h>
 
-#if defined(USE_OPTIONS_H)
-# include <../conf/options.h>
-#endif
+#include "res_config.h"
 
 /*
  * Form all types of queries.
@@ -111,7 +103,7 @@ res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen)
 	 * Initialize header fields.
 	 */
 	if ((buf == NULL) || (buflen < HFIXEDSZ))
-		return (-1);
+		return(-1);
 	bzero(buf, HFIXEDSZ);
 	hp = (HEADER *) buf;
 	hp->id = htons(++_res.id);
@@ -131,7 +123,7 @@ res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen)
 	case QUERY:	/*FALLTHROUGH*/
 	case NS_NOTIFY_OP:
 		if ((buflen -= QFIXEDSZ) < 0)
-			return (-1);
+			return(-1);
 		if ((n = dn_comp(dname, cp, buflen, dnptrs, lastdnptr)) < 0)
 			return (-1);
 		cp += n;
@@ -205,13 +197,13 @@ res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen)
 			return (-1);
 		cp += n;
 		__putshort(type, cp);
-		cp += INT16SZ;
-		__putshort(class, cp);
-		cp += INT16SZ;
+                cp += INT16SZ;
+                __putshort(class, cp);
+                cp += INT16SZ;
 		__putlong(0, cp);
 		cp += INT32SZ;
 		__putshort(datalen, cp);
-		cp += INT16SZ;
+                cp += INT16SZ;
 		if (datalen) {
 			bcopy(data, cp, datalen);
 			cp += datalen;
@@ -228,13 +220,13 @@ res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen)
 			return (-1);
 		cp += n;
 		__putshort(newrr->r_type, cp);
-		cp += INT16SZ;
-		__putshort(newrr->r_class, cp);
-		cp += INT16SZ;
+                cp += INT16SZ;
+                __putshort(newrr->r_class, cp);
+                cp += INT16SZ;
 		__putlong(0, cp);
 		cp += INT32SZ;
 		__putshort(newrr->r_size, cp);
-		cp += INT16SZ;
+                cp += INT16SZ;
 		if (newrr->r_size) {
 			bcopy(newrr->r_data, cp, newrr->r_size);
 			cp += newrr->r_size;
diff --git a/lib/libc/net/res_query.c b/lib/libc/net/res_query.c
index 8229fbc..40c569a 100644
--- a/lib/libc/net/res_query.c
+++ b/lib/libc/net/res_query.c
@@ -1,9 +1,7 @@
-/*
- * ++Copyright++ 1988, 1993
- * -
+/*-
  * Copyright (c) 1988, 1993
- *    The Regents of the University of California.  All rights reserved.
- * 
+ *	The Regents of the University of California.  All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ -14,12 +12,12 @@
  *    documentation and/or other materials provided with the distribution.
  * 3. All advertising materials mentioning features or use of this software
  *    must display the following acknowledgement:
- * 	This product includes software developed by the University of
- * 	California, Berkeley and its contributors.
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
@@ -33,14 +31,14 @@
  * SUCH DAMAGE.
  * -
  * Portions Copyright (c) 1993 by Digital Equipment Corporation.
- * 
+ *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies, and that
  * the name of Digital Equipment Corporation not be used in advertising or
  * publicity pertaining to distribution of the document or software without
  * specific, written prior permission.
- * 
+ *
  * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
  * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
@@ -55,7 +53,7 @@
 
 #if defined(LIBC_SCCS) && !defined(lint)
 static char sccsid[] = "@(#)res_query.c	8.1 (Berkeley) 6/4/93";
-static char rcsid[] = "$Id: res_query.c,v 8.6 1995/06/29 09:26:28 vixie Exp $";
+static char rcsid[] = "$Id: res_query.c,v 1.5 1995/08/20 20:03:00 peter Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <sys/param.h>
@@ -68,16 +66,10 @@ static char rcsid[] = "$Id: res_query.c,v 8.6 1995/06/29 09:26:28 vixie Exp $";
 #include <resolv.h>
 #include <ctype.h>
 #include <errno.h>
-#if defined(BSD) && (BSD >= 199306)
-# include <stdlib.h>
-# include <string.h>
-#else
-# include "../conf/portability.h"
-#endif
+#include <stdlib.h>
+#include <string.h>
 
-#if defined(USE_OPTIONS_H)
-# include <../conf/options.h>
-#endif
+#include "res_config.h"
 
 #if PACKETSZ > 1024
 #define MAXPACKET	PACKETSZ
@@ -147,21 +139,21 @@ res_query(name, class, type, answer, anslen)
 			    ntohs(hp->ancount));
 #endif
 		switch (hp->rcode) {
-		case NXDOMAIN:
-			h_errno = HOST_NOT_FOUND;
-			break;
-		case SERVFAIL:
-			h_errno = TRY_AGAIN;
-			break;
-		case NOERROR:
-			h_errno = NO_DATA;
-			break;
-		case FORMERR:
-		case NOTIMP:
-		case REFUSED:
-		default:
-			h_errno = NO_RECOVERY;
-			break;
+			case NXDOMAIN:
+				h_errno = HOST_NOT_FOUND;
+				break;
+			case SERVFAIL:
+				h_errno = TRY_AGAIN;
+				break;
+			case NOERROR:
+				h_errno = NO_DATA;
+				break;
+			case FORMERR:
+			case NOTIMP:
+			case REFUSED:
+			default:
+				h_errno = NO_RECOVERY;
+				break;
 		}
 		return (-1);
 	}
@@ -194,7 +186,7 @@ res_search(name, class, type, answer, anslen)
 	errno = 0;
 	h_errno = HOST_NOT_FOUND;	/* default, if we never query */
 	dots = 0;
-	for (cp = name; *cp; cp++)
+	for (cp = name;  *cp;  cp++)
 		dots += (*cp == '.');
 	trailing_dot = 0;
 	if (cp > name && *--cp == '.')
diff --git a/lib/libc/net/res_send.c b/lib/libc/net/res_send.c
index 427e82a..1f7017f 100644
--- a/lib/libc/net/res_send.c
+++ b/lib/libc/net/res_send.c
@@ -1,9 +1,7 @@
-/*
- * ++Copyright++ 1985, 1989, 1993
- * -
+/*-
  * Copyright (c) 1985, 1989, 1993
- *    The Regents of the University of California.  All rights reserved.
- * 
+ *	The Regents of the University of California.  All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ -14,12 +12,12 @@
  *    documentation and/or other materials provided with the distribution.
  * 3. All advertising materials mentioning features or use of this software
  *    must display the following acknowledgement:
- * 	This product includes software developed by the University of
- * 	California, Berkeley and its contributors.
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
@@ -33,14 +31,14 @@
  * SUCH DAMAGE.
  * -
  * Portions Copyright (c) 1993 by Digital Equipment Corporation.
- * 
+ *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies, and that
  * the name of Digital Equipment Corporation not be used in advertising or
  * publicity pertaining to distribution of the document or software without
  * specific, written prior permission.
- * 
+ *
  * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
  * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
@@ -55,7 +53,7 @@
 
 #if defined(LIBC_SCCS) && !defined(lint)
 static char sccsid[] = "@(#)res_send.c	8.1 (Berkeley) 6/4/93";
-static char rcsid[] = "$Id: res_send.c,v 8.7 1995/12/03 08:31:17 vixie Exp $";
+static char rcsid[] = "$Id: res_send.c,v 1.5 1995/08/20 20:03:06 peter Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 	/* change this to "0"
@@ -63,7 +61,7 @@ static char rcsid[] = "$Id: res_send.c,v 8.7 1995/12/03 08:31:17 vixie Exp $";
 	 * of multi-homed SunOS
 	 * ("broken") name servers.
 	 */
-#define	CHECK_SRVR_ADDR	1	/* XXX - should be in options.h */
+#define	CHECK_SRVR_ADDR	1	/* XXX - should be in res_config.h */
 
 /*
  * Send query to name server and wait for reply.
@@ -78,20 +76,14 @@ static char rcsid[] = "$Id: res_send.c,v 8.7 1995/12/03 08:31:17 vixie Exp $";
 #include <arpa/inet.h>
 
 #include <stdio.h>
-#include <netdb.h>
 #include <errno.h>
 #include <resolv.h>
-#if defined(BSD) && (BSD >= 199306)
-# include <stdlib.h>
-# include <string.h>
-# include <unistd.h>
-#else
-# include "../conf/portability.h"
-#endif
+#include <netdb.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
 
-#if defined(USE_OPTIONS_H)
-# include <../conf/options.h>
-#endif
+#include "res_config.h"
 
 void _res_close __P((void));
 
@@ -99,23 +91,6 @@ static int s = -1;	/* socket used for communications */
 static int connected = 0;	/* is the socket connected */
 static int vc = 0;	/* is the socket a virtual ciruit? */
 
-#ifndef FD_SET
-/* XXX - should be in portability.h */
-#define	NFDBITS		32
-#define	FD_SETSIZE	32
-#define	FD_SET(n, p)	((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
-#define	FD_CLR(n, p)	((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
-#define	FD_ISSET(n, p)	((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
-#define FD_ZERO(p)	bzero((char *)(p), sizeof(*(p)))
-#endif
-
-/* XXX - this should be done in portability.h */
-#if (defined(BSD) && (BSD >= 199103)) || defined(linux)
-# define CAN_RECONNECT 1
-#else
-# define CAN_RECONNECT 0
-#endif
-
 #ifndef DEBUG
 #   define Dprint(cond, args) /*empty*/
 #   define DprintQ(cond, args, query, size) /*empty*/
@@ -127,38 +102,38 @@ static int vc = 0;	/* is the socket a virtual ciruit? */
 			fprintf args;\
 			__fp_nquery(query, size, stdout);\
 		} else {}
-    static void
-    Aerror(file, string, error, address)
-	FILE *file;
-	char *string;
-	int error;
-	struct sockaddr_in address;
-    {
-	int save = errno;
-
-	if (_res.options & RES_DEBUG) {
+static void
+Aerror(file, string, error, address)
+    FILE *file;
+    char *string;
+    int error;
+    struct sockaddr_in address;
+{
+    int save = errno;
+
+    if (_res.options & RES_DEBUG) {
 		fprintf(file, "res_send: %s ([%s].%u): %s\n",
-			string,
-			inet_ntoa(address.sin_addr),
+		    string,
+		    inet_ntoa(address.sin_addr),
 			ntohs(address.sin_port),
-			strerror(error));
-	}
-	errno = save;
+		    strerror(error));
     }
-    static void
-    Perror(file, string, error)
-	FILE *file;
-	char *string;
-	int error;
-    {
-	int save = errno;
-
-	if (_res.options & RES_DEBUG) {
-		fprintf(file, "res_send: %s: %s\n",
-			string, strerror(error));
-	}
-	errno = save;
+    errno = save;
+}
+static void
+Perror(file, string, error)
+    FILE *file;
+    char *string;
+    int error;
+{
+    int save = errno;
+
+    if (_res.options & RES_DEBUG) {
+	    fprintf(file, "res_send: %s: %s\n",
+		    string, strerror(error));
     }
+    errno = save;
+}
 #endif
 
 static res_send_qhook Qhook = NULL;
@@ -239,7 +214,7 @@ res_nameinquery(name, type, class, buf, eom)
 		if (n < 0)
 			return (-1);
 		cp += n;
-		ttype = _getshort(cp); cp += INT16SZ;
+		ttype = _getshort(cp);	cp += INT16SZ;
 		tclass = _getshort(cp); cp += INT16SZ;
 		if (ttype == type &&
 		    tclass == class &&
@@ -288,20 +263,20 @@ res_queriesmatch(buf1, eom1, buf2, eom2)
 
 int
 res_send(buf, buflen, ans, anssiz)
-	const u_char *buf;
-	int buflen;
-	u_char *ans;
-	int anssiz;
+	const u_char	*buf;
+	int		buflen;
+	u_char		*ans;
+	int		anssiz;
 {
-	HEADER *hp = (HEADER *) buf;
-	HEADER *anhp = (HEADER *) ans;
+	HEADER		*hp = (HEADER *) buf;
+	HEADER		*anhp = (HEADER *) ans;
 	int gotsomewhere, connreset, terrno, try, v_circuit, resplen, ns;
-	register int n;
-	u_int badns;	/* XXX NSMAX can't exceed #/bits in this var */
+	register int	n;
+	u_int		badns;	/* XXX NSMAX can't exceed #/bits in this var */
 
 	if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
 		/* errno should have been set by res_init() in this case. */
-		return (-1);
+			return (-1);
 	}
 	DprintQ((_res.options & RES_DEBUG) || (_res.pfcode & RES_PRF_QUERY),
 		(stdout, ";; res_send()\n"), buf, buflen);
@@ -318,7 +293,7 @@ res_send(buf, buflen, ans, anssiz)
 	    for (ns = 0; ns < _res.nscount; ns++) {
 		struct sockaddr_in *nsap = &_res.nsaddr_list[ns];
     same_ns:
-		if (badns & (1 << ns)) {
+		if (badns & (1<<ns)) {
 			_res_close();
 			goto next_ns;
 		}
@@ -355,13 +330,13 @@ res_send(buf, buflen, ans, anssiz)
 
 		Dprint(_res.options & RES_DEBUG,
 		       (stdout, ";; Querying server (# %d) address = %s\n",
-			ns + 1, inet_ntoa(nsap->sin_addr)));
+			ns+1, inet_ntoa(nsap->sin_addr)));
 
 		if (v_circuit) {
-			int truncated;
-			struct iovec iov[2];
-			u_short len;
-			u_char *cp;
+			int		truncated;
+			struct iovec	iov[2];
+			u_short		len;
+			u_char		*cp;
 
 			/*
 			 * Use virtual circuit;
@@ -385,7 +360,7 @@ res_send(buf, buflen, ans, anssiz)
 					terrno = errno;
 					Aerror(stderr, "connect/vc",
 					       errno, *nsap);
-					badns |= (1 << ns);
+					badns |= (1<<ns);
 					_res_close();
 					goto next_ns;
 				}
@@ -402,7 +377,7 @@ res_send(buf, buflen, ans, anssiz)
 			if (writev(s, iov, 2) != (INT16SZ + buflen)) {
 				terrno = errno;
 				Perror(stderr, "write failed", errno);
-				badns |= (1 << ns);
+				badns |= (1<<ns);
 				_res_close();
 				goto next_ns;
 			}
@@ -481,19 +456,16 @@ res_send(buf, buflen, ans, anssiz)
 			/*
 			 * Use datagrams.
 			 */
-			struct timeval timeout;
-			fd_set dsmask;
+			struct timeval	timeout;
+			fd_set		dsmask;
 			struct sockaddr_in from;
-			int fromlen;
+			int		fromlen;
 
 			if ((s < 0) || vc) {
 				if (vc)
 					_res_close();
 				s = socket(PF_INET, SOCK_DGRAM, 0);
 				if (s < 0) {
-#if !CAN_RECONNECT
- bad_dg_sock:
-#endif
 					terrno = errno;
 					Perror(stderr, "socket(dg)", errno);
 					return (-1);
@@ -527,7 +499,7 @@ res_send(buf, buflen, ans, anssiz)
 						Aerror(stderr,
 						       "connect(dg)",
 						       errno, *nsap);
-						badns |= (1 << ns);
+						badns |= (1<<ns);
 						_res_close();
 						goto next_ns;
 					}
@@ -535,7 +507,7 @@ res_send(buf, buflen, ans, anssiz)
 				}
 				if (send(s, (char*)buf, buflen, 0) != buflen) {
 					Perror(stderr, "send", errno);
-					badns |= (1 << ns);
+					badns |= (1<<ns);
 					_res_close();
 					goto next_ns;
 				}
@@ -545,7 +517,6 @@ res_send(buf, buflen, ans, anssiz)
 				 * for responses from more than one server.
 				 */
 				if (connected) {
-#if CAN_RECONNECT
 					struct sockaddr_in no_addr;
 
 					no_addr.sin_family = AF_INET;
@@ -555,15 +526,6 @@ res_send(buf, buflen, ans, anssiz)
 						       (struct sockaddr *)
 						        &no_addr,
 						       sizeof(no_addr));
-#else
-					int s1 = socket(PF_INET, SOCK_DGRAM,0);
-					if (s1 < 0)
-						goto bad_dg_sock;
-					(void) dup2(s1, s);
-					(void) close(s1);
-					Dprint(_res.options & RES_DEBUG,
-					       (stdout, ";; new DG socket\n"))
-#endif
 					connected = 0;
 					errno = 0;
 				}
@@ -572,7 +534,7 @@ res_send(buf, buflen, ans, anssiz)
 					   sizeof(struct sockaddr))
 				    != buflen) {
 					Aerror(stderr, "sendto", errno, *nsap);
-					badns |= (1 << ns);
+					badns |= (1<<ns);
 					_res_close();
 					goto next_ns;
 				}
@@ -646,7 +608,7 @@ res_send(buf, buflen, ans, anssiz)
 #endif
 			if (!(_res.options & RES_INSECURE2) &&
 			    !res_queriesmatch(buf, buf + buflen,
-					      ans, ans + anssiz)) {
+					   ans, ans + anssiz)) {
 				/*
 				 * response contains wrong query? ignore it.
 				 * XXX - potential security hazard could
@@ -664,11 +626,11 @@ res_send(buf, buflen, ans, anssiz)
 				DprintQ(_res.options & RES_DEBUG,
 					(stdout, "server rejected query:\n"),
 					ans, resplen);
-				badns |= (1 << ns);
+				badns |= (1<<ns);
 				_res_close();
 				/* don't retry if called from dig */
 				if (!_res.pfcode)
-					goto next_ns;
+				goto next_ns;
 			}
 			if (!(_res.options & RES_IGNTC) && anhp->tc) {
 				/*
@@ -682,13 +644,9 @@ res_send(buf, buflen, ans, anssiz)
 				goto same_ns;
 			}
 		} /*if vc/dg*/
-		Dprint((_res.options & RES_DEBUG) ||
-		       ((_res.pfcode & RES_PRF_REPLY) &&
-			(_res.pfcode & RES_PRF_HEAD1)),
-		       (stdout, ";; got answer:\n"));
 		DprintQ((_res.options & RES_DEBUG) ||
 			(_res.pfcode & RES_PRF_REPLY),
-			(stdout, ""),
+			(stdout, ";; got answer:\n"),
 			ans, resplen);
 		/*
 		 * If using virtual circuits, we assume that the first server
diff --git a/lib/libc/net/resolver.3 b/lib/libc/net/resolver.3
new file mode 100644
index 0000000..4014c72
--- /dev/null
+++ b/lib/libc/net/resolver.3
@@ -0,0 +1,323 @@
+.\" Copyright (c) 1985, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)resolver.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt RESOLVER 3
+.Os BSD 4.3
+.Sh NAME
+.Nm res_query ,
+.Nm res_search ,
+.Nm res_mkquery ,
+.Nm res_send ,
+.Nm res_init ,
+.Nm dn_comp ,
+.Nm dn_expand
+.Nd resolver routines
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <netinet/in.h>
+.Fd #include <arpa/nameser.h>
+.Fd #include <resolv.h>
+.Fo res_query
+.Fa "char *dname"
+.Fa "int class"
+.Fa "int type"
+.Fa "u_char *answer"
+.Fa "int anslen"
+.Fc
+.Fo res_search
+.Fa "char *dname"
+.Fa "int class"
+.Fa "int type"
+.Fa "u_char *answer"
+.Fa "int anslen"
+.Fc
+.Fo res_mkquery
+.Fa "int op"
+.Fa "char *dname"
+.Fa "int class"
+.Fa "int type"
+.Fa "char *data"
+.Fa "int datalen"
+.Fa "struct rrec *newrr"
+.Fa "char *buf"
+.Fa "int buflen"
+.Fc
+.Fo res_send
+.Fa "char *msg"
+.Fa "int msglen"
+.Fa "char *answer"
+.Fa "int anslen"
+.Fc
+.Fn res_init 
+.Fo dn_comp
+.Fa "char *exp_dn"
+.Fa "char *comp_dn"
+.Fa "int length"
+.Fa "char **dnptrs"
+.Fa "char **lastdnptr"
+.Fc
+.Fo dn_expand
+.Fa "u_char *msg"
+.Fa "u_char *eomorig"
+.Fa "u_char *comp_dn"
+.Fa "u_char *exp_dn"
+.Fa "int length"
+.Fc
+.Sh DESCRIPTION
+These routines are used for making, sending and interpreting
+query and reply messages with Internet domain name servers.
+.Pp
+Global configuration and state information that is used by the
+resolver routines is kept in the structure
+.Em _res .
+Most of the values have reasonable defaults and can be ignored.
+Options
+stored in
+.Em _res.options
+are defined in
+.Pa resolv.h
+and are as follows.
+Options are stored as a simple bit mask containing the bitwise ``or''
+of the options enabled.
+.Bl -tag -width RES_DEFNAMES
+.It Dv RES_INIT
+True if the initial name server address and default domain name are
+initialized (i.e.,
+.Fn res_init
+has been called).
+.It Dv RES_DEBUG
+Print debugging messages.
+.It Dv RES_AAONLY
+Accept authoritative answers only.
+With this option,
+.Fn res_send
+should continue until it finds an authoritative answer or finds an error.
+Currently this is not implemented.
+.It Dv RES_USEVC
+Use
+.Tn TCP
+connections for queries instead of
+.Tn UDP
+datagrams.
+.It Dv RES_STAYOPEN
+Used with
+.Dv RES_USEVC
+to keep the
+.Tn TCP
+connection open between
+queries.
+This is useful only in programs that regularly do many queries.
+.Tn UDP
+should be the normal mode used.
+.It Dv RES_IGNTC
+Unused currently (ignore truncation errors, i.e., don't retry with
+.Tn TCP ) .
+.It Dv RES_RECURSE
+Set the recursion-desired bit in queries.
+This is the default.
+.Pf ( Fn res_send
+does not do iterative queries and expects the name server
+to handle recursion.)
+.It Dv RES_DEFNAMES
+If set,
+.Fn res_search
+will append the default domain name to single-component names
+(those that do not contain a dot).
+This option is enabled by default.
+.It Dv RES_DNSRCH
+If this option is set,
+.Fn res_search
+will search for host names in the current domain and in parent domains; see
+.Xr hostname 7 .
+This is used by the standard host lookup routine
+.Xr gethostbyname 3 .
+This option is enabled by default.
+.El
+.Pp
+The
+.Fn res_init
+routine
+reads the configuration file (if any; see
+.Xr resolver 5 )
+to get the default domain name,
+search list and
+the Internet address of the local name server(s).
+If no server is configured, the host running
+the resolver is tried.
+The current domain name is defined by the hostname
+if not specified in the configuration file;
+it can be overridden by the environment variable
+.Ev LOCALDOMAIN .
+Initialization normally occurs on the first call
+to one of the following routines.
+.Pp
+The
+.Fn res_query
+function provides an interface to the server query mechanism.
+It constructs a query, sends it to the local server,
+awaits a response, and makes preliminary checks on the reply.
+The query requests information of the specified
+.Fa type
+and
+.Fa class
+for the specified fully-qualified domain name
+.Fa dname .
+The reply message is left in the
+.Fa answer
+buffer with length
+.Fa anslen
+supplied by the caller.
+.Pp
+The
+.Fn res_search
+routine makes a query and awaits a response like
+.Fn res_query ,
+but in addition, it implements the default and search rules
+controlled by the
+.Dv RES_DEFNAMES
+and
+.Dv RES_DNSRCH
+options.
+It returns the first successful reply.
+.Pp
+The remaining routines are lower-level routines used by
+.Fn res_query .
+The
+.Fn res_mkquery
+function
+constructs a standard query message and places it in
+.Fa buf .
+It returns the size of the query, or \-1 if the query is
+larger than
+.Fa buflen .
+The query type
+.Fa op
+is usually
+.Dv QUERY ,
+but can be any of the query types defined in
+.Aq Pa arpa/nameser.h .
+The domain name for the query is given by
+.Fa dname .
+.Fa Newrr
+is currently unused but is intended for making update messages.
+.Pp
+The
+.Fn res_send
+routine
+sends a pre-formatted query and returns an answer.
+It will call
+.Fn res_init
+if
+.Dv RES_INIT
+is not set, send the query to the local name server, and
+handle timeouts and retries.
+The length of the reply message is returned, or
+\-1 if there were errors.
+.Pp
+The
+.Fn dn_comp
+function
+compresses the domain name
+.Fa exp_dn
+and stores it in
+.Fa comp_dn .
+The size of the compressed name is returned or \-1 if there were errors.
+The size of the array pointed to by
+.Fa comp_dn
+is given by
+.Fa length .
+The compression uses
+an array of pointers
+.Fa dnptrs
+to previously-compressed names in the current message.
+The first pointer points to
+to the beginning of the message and the list ends with
+.Dv NULL .
+The limit to the array is specified by
+.Fa lastdnptr .
+A side effect of
+.Fn dn_comp
+is to update the list of pointers for
+labels inserted into the message
+as the name is compressed.
+If
+.Em dnptr
+is
+.Dv NULL, names are not compressed.
+If
+.Fa lastdnptr
+is
+.Dv NULL ,
+the list of labels is not updated.
+.Pp
+The
+.Fn dn_expand
+entry
+expands the compressed domain name
+.Fa comp_dn
+to a full domain name
+The compressed name is contained in a query or reply message;
+.Fa msg
+is a pointer to the beginning of the message.
+The uncompressed name is placed in the buffer indicated by
+.Fa exp_dn
+which is of size
+.Fa length .
+The size of compressed name is returned or \-1 if there was an error.
+.Sh FILES
+.Bl -tag -width Pa
+/etc/resolv.conf
+The configuration file
+see
+.Xr resolver 5 .
+.El
+.Sh SEE ALSO
+.Xr gethostbyname 3 ,
+.Xr named 8 ,
+.Xr resolver 5 ,
+.Xr hostname 7 ,
+.Pp
+.%T RFC1032 ,
+.%T RFC1033 ,
+.%T RFC1034 ,
+.%T RFC1035 ,
+.%T RFC974
+.Rs
+.%T "Name Server Operations Guide for BIND"
+.Re
+.Sh HISTORY
+The
+.Nm
+function appeared in 
+.Bx 4.3 .
diff --git a/lib/libc/net/send.c b/lib/libc/net/send.c
new file mode 100644
index 0000000..81151c4
--- /dev/null
+++ b/lib/libc/net/send.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)send.c	8.2 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <stddef.h>
+
+ssize_t
+send(s, msg, len, flags)
+	int s, flags;
+	size_t len;
+	const void *msg;
+{
+	return (sendto(s, msg, len, flags, NULL, 0));
+}
diff --git a/lib/libc/nls/Makefile.inc b/lib/libc/nls/Makefile.inc
new file mode 100644
index 0000000..22c693b
--- /dev/null
+++ b/lib/libc/nls/Makefile.inc
@@ -0,0 +1,6 @@
+#	$NetBSD: Makefile.inc,v 1.7 1995/02/27 13:06:20 cgd Exp $
+
+.PATH: ${.CURDIR}/nls
+
+SRCS+=	catclose.c catgets.c catopen.c msgcat.c
+MAN3+=  nls/catclose.3 nls/catgets.3 nls/catopen.3
diff --git a/lib/libc/nls/catclose.3 b/lib/libc/nls/catclose.3
new file mode 100644
index 0000000..f9803ff
--- /dev/null
+++ b/lib/libc/nls/catclose.3
@@ -0,0 +1,54 @@
+.\"	$Id$
+.\"
+.\" Copyright (c) 1994 Winning Strategies, Inc.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"      This product includes software developed by Winning Strategies, Inc.
+.\" 4. The name of the author may not be used to endorse or promote products
+.\"    derived from this software without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd May 29, 1994
+.Dt CATCLOSE 3
+.Os
+.Sh NAME
+.Nm catclose
+.Nd close message catalog
+.Sh SYNOPSIS
+.Fd #include <nl_types.h>
+.Ft int
+.Fn catclose "nl_catd catd"
+.Sh DESCRIPTION
+The
+.Fn catclose
+function closes the message catalog specified by the argument 
+.Fa catd .
+.Sh SEE ALSO
+.Xr catopen 3 ,
+.Xr catgets 3
+.Sh STANDARDS
+The
+.Fn catclose
+function conforms to
+.St -xpg3 .
+
diff --git a/lib/libc/nls/catclose.c b/lib/libc/nls/catclose.c
new file mode 100644
index 0000000..341f664
--- /dev/null
+++ b/lib/libc/nls/catclose.c
@@ -0,0 +1,25 @@
+/*	$Id$ */
+
+/*
+ * Written by J.T. Conklin, 10/05/94
+ * Public domain.
+ */
+
+#include <sys/cdefs.h>
+
+#ifdef __indr_reference
+__indr_reference(_catclose,catclose);
+#else
+
+#include <nl_types.h>
+
+extern int _catclose __P((nl_catd));
+
+int
+catclose(catd)
+	nl_catd catd;
+{
+	return _catclose(catd);
+}
+
+#endif
diff --git a/lib/libc/nls/catgets.3 b/lib/libc/nls/catgets.3
new file mode 100644
index 0000000..3747d82
--- /dev/null
+++ b/lib/libc/nls/catgets.3
@@ -0,0 +1,67 @@
+.\"	$Id$
+.\"
+.\" Copyright (c) 1994 Winning Strategies, Inc.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"      This product includes software developed by Winning Strategies, Inc.
+.\" 4. The name of the author may not be used to endorse or promote products
+.\"    derived from this software without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd May 29, 1994
+.Dt CATGETS 3
+.Os
+.Sh NAME
+.Nm catgets
+.Nd retrieve string from message catalog 
+.Sh SYNOPSIS
+.Fd #include <nl_types.h>
+.Ft char *
+.Fn catgets "nl_catd catd" "int set_id" "int msg_id" "char *s"
+.Sh DESCRIPTION
+The 
+.Fn catgets 
+function attempts to retrieve message
+.Fa msg_id
+of set
+.Fa set_id
+from the message catalog referenced by the descriptor
+.Fa catd .
+The argument 
+.Fa s
+points to a default message which is returned if the function
+is unable to retrieve the specified message.
+.Sh RETURN VALUE
+If the specified message was retrieved successfully, 
+.Fn catgets
+returns a pointer to an internal buffer containing the message string;
+otherwise it returns
+.Fa s .
+.Sh SEE ALSO
+.Xr catclose 3 ,
+.Xr catopen 3
+.Sh STANDARDS
+The
+.Fn catgets
+function conforms to
+.St -xpg3 .
diff --git a/lib/libc/nls/catgets.c b/lib/libc/nls/catgets.c
new file mode 100644
index 0000000..c29cf64
--- /dev/null
+++ b/lib/libc/nls/catgets.c
@@ -0,0 +1,28 @@
+/*	$Id$ */
+
+/*
+ * Written by J.T. Conklin, 10/05/94
+ * Public domain.
+ */
+
+#include <sys/cdefs.h>
+
+#ifdef __indr_reference
+__indr_reference(_catgets,catgets);
+#else
+
+#include <nl_types.h>
+
+extern char * _catgets __P((nl_catd, int, int, char *));
+
+char *
+catgets(catd, set_id, msg_id, s)
+	nl_catd catd;
+	int set_id;
+	int msg_id;
+	char *s;
+{
+	return _catgets(catd, set_id, msg_id, s);
+}
+
+#endif
diff --git a/lib/libc/nls/catopen.3 b/lib/libc/nls/catopen.3
new file mode 100644
index 0000000..f581baf
--- /dev/null
+++ b/lib/libc/nls/catopen.3
@@ -0,0 +1,82 @@
+.\"	$Id$
+.\"
+.\" Copyright (c) 1994 Winning Strategies, Inc.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"      This product includes software developed by Winning Strategies, Inc.
+.\" 4. The name of the author may not be used to endorse or promote products
+.\"    derived from this software without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd May 29, 1994
+.Dt CATOPEN 3
+.Os
+.Sh NAME
+.Nm catopen
+.Nd open message catalog 
+.Sh SYNOPSIS
+.Fd #include <nl_types.h>
+.Ft nl_catd
+.Fn catopen "const char *name" "int oflag"
+.Sh DESCRIPTION
+The 
+.Fn catopen
+function opens the message catalog specified by
+.Fa name 
+and returns a message catalog descriptor.
+If
+.Fa name
+contains a
+.Sq / 
+then 
+.Fa name
+specifies the full pathname for the message catalog, otherwise the value 
+of the environment variable
+.Ev NLSPATH 
+is used with 
+.Fa name
+substituted for %N.
+.Pp
+The
+.Fa oflag
+argument is reserved for future use and should be set to zero.
+.Sh RETURN VALUE
+Upon successful completion, 
+.Fn catopen
+returns a message catalog descriptor.
+Otherwise, (nl_catd) -1 is returned and
+.Va errno 
+is set to indicate the error.
+.Sh ERRORS
+.Bl -tag -width Er
+.It Bq Er ENOMEM
+Insufficient memory is availiable.
+.El
+.Sh SEE ALSO
+.Xr catclose 3 ,
+.Xr catgets 3
+.Sh STANDARDS
+The
+.Fn catopen
+function conforms to
+.St -xpg3 .
diff --git a/lib/libc/nls/catopen.c b/lib/libc/nls/catopen.c
new file mode 100644
index 0000000..5dfb727
--- /dev/null
+++ b/lib/libc/nls/catopen.c
@@ -0,0 +1,26 @@
+/*	$Id$ */
+
+/*
+ * Written by J.T. Conklin, 10/05/94
+ * Public domain.
+ */
+
+#include <sys/cdefs.h>
+
+#ifdef __indr_reference
+__indr_reference(_catopen,catopen);
+#else
+
+#include <nl_types.h>
+
+extern nl_catd _catopen __P((__const char *, int));
+
+nl_catd
+catopen(name, oflag)
+	__const char *name;
+	int oflag;
+{
+	return _catopen(name, oflag);
+}
+
+#endif
diff --git a/lib/libc/nls/msgcat.c b/lib/libc/nls/msgcat.c
new file mode 100644
index 0000000..8df18ae
--- /dev/null
+++ b/lib/libc/nls/msgcat.c
@@ -0,0 +1,394 @@
+/*	$Id: msgcat.c,v 1.3 1995/06/17 03:02:21 ache Exp $ */
+
+/***********************************************************
+Copyright 1990, by Alfalfa Software Incorporated, Cambridge, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that Alfalfa's name not be used in
+advertising or publicity pertaining to distribution of the software
+without specific, written prior permission.
+
+ALPHALPHA DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+ALPHALPHA BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+If you make any modifications, bugfixes or other changes to this software
+we'd appreciate it if you could send a copy to us so we can keep things
+up-to-date.  Many thanks.
+				Kee Hinckley
+				Alfalfa Software, Inc.
+				267 Allston St., #3
+				Cambridge, MA 02139  USA
+				nazgul@alfalfa.com
+
+******************************************************************/
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char *rcsid = "$NetBSD: msgcat.c,v 1.11 1995/02/27 13:06:51 cgd Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+/* Edit History
+
+03/06/91   4 schulert	remove working directory from nlspath
+01/18/91   2 hamilton	#if not rescanned
+01/12/91   3 schulert	conditionally use prototypes
+11/03/90   1 hamilton	Alphalpha->Alfalfa & OmegaMail->Poste
+10/15/90   2 schulert	> #include <unistd.h> if MIPS
+08/13/90   1 schulert	move from ua to omu
+*/
+
+/*
+ * We need a better way of handling errors than printing text.  I need
+ * to add an error handling routine.
+ */
+
+#include "nl_types.h"
+#include "msgcat.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#ifndef True
+# define True	~0
+# define False	0
+#endif
+
+/* take care of sysv diffs */
+#ifndef MAXPATHLEN
+#define MAXPATHLEN 1024
+#endif
+
+#ifndef FD_CLOEXEC
+#define FD_CLOEXEC 1
+#endif
+
+#define	NLERR	((nl_catd) -1)
+
+static nl_catd loadCat();
+static nl_catd loadSet();
+
+nl_catd 	_catopen( name, type)
+__const char *name;
+int type;
+{
+    char	path[MAXPATHLEN];
+    __const char *catpath = NULL;
+    char	*nlspath, *tmppath = NULL;
+    char	*lang;
+    long	len;
+    char	*base, *cptr, *pathP;
+    struct stat	sbuf;
+
+    if (!name || !*name) return(NLERR);
+
+    if (strchr(name, '/')) {
+	catpath = name;
+	if (stat(catpath, &sbuf)) return(0);
+    } else {
+	if ((lang = (char *) getenv("LANG")) == NULL) lang = "C";
+	if ((nlspath = (char *) getenv("NLSPATH")) == NULL) {
+	    nlspath = "/usr/share/nls/%L/%N.cat:/usr/share/nls/%N/%L:/usr/local/share/nls/%L/%N.cat:/usr/local/share/nls/%N/%L";
+	}
+
+	len = strlen(nlspath);
+	base = cptr = (char *) malloc(len + 2);
+	if (!base) return(NLERR);
+	strcpy(cptr, nlspath);
+	cptr[len] = ':';
+	cptr[len+1] = '\0';
+
+	for (nlspath = cptr; *cptr; ++cptr) {
+	    if (*cptr == ':') {
+		*cptr = '\0';
+		for (pathP = path; *nlspath; ++nlspath) {
+		    if (*nlspath == '%') {
+			if (*(nlspath + 1) == 'L') {
+			    ++nlspath;
+			    strcpy(pathP, lang);
+			    pathP += strlen(lang);
+			} else if (*(nlspath + 1) == 'N') {
+			    ++nlspath;
+			    strcpy(pathP, name);
+			    pathP += strlen(name);
+			} else *(pathP++) = *nlspath;
+		    } else *(pathP++) = *nlspath;
+		}
+		*pathP = '\0';
+		if (stat(path, &sbuf) == 0) {
+		    catpath = path;
+		    break;
+		}
+		nlspath = cptr+1;
+	    }
+	}
+	free(base);
+	if (tmppath) free(tmppath);
+
+	if (!catpath) return(0);
+    }
+
+    return(loadCat(catpath, type));
+}
+
+/*
+ * We've got an odd situation here.  The odds are real good that the
+ * number we are looking for is almost the same as the index.  We could
+ * use the index, check the difference and do something intelligent, but
+ * I haven't quite figured out what's intelligent.
+ *
+ * Here's a start.
+ *	Take an id N.  If there are > N items in the list, then N cannot
+ *	be more than N items from the start, since otherwise there would
+ *	have to be duplicate items.  So we can safely set the top to N+1
+ *	(after taking into account that ids start at 1, and arrays at 0)
+ *
+ *	Let's say we are at position P, and we are looking for N, but have
+ *	V.  If N > V, then the furthest away that N could be is
+ *	P + (N-V).  So we can safely set hi to P+(N-V)+1.  For example:
+ *		We are looking for 10, but have 8
+ *		8	?	?	?	?
+ *			>=9	>=10	>=11
+ *
+ */
+static MCSetT	*MCGetSet( cat, setId)
+MCCatT *cat;
+int setId;
+{
+    MCSetT	*set;
+    long	lo, hi, cur, dir;
+
+    if (!cat || setId <= 0) return(NULL);
+
+    lo = 0;
+    if (setId - 1 < cat->numSets) {
+	cur = setId - 1;
+	hi = setId;
+    } else {
+	hi = cat->numSets;
+	cur = (hi - lo) / 2;
+    }
+
+    while (True) {
+	set = cat->sets + cur;
+	if (set->setId == setId) break;
+	if (set->setId < setId) {
+	    lo = cur+1;
+	    if (hi > cur + (setId - set->setId) + 1) hi = cur+(setId-set->setId)+1;
+	    dir = 1;
+	} else {
+	    hi = cur;
+	    dir = -1;
+	}
+	if (lo >= hi) return(NULL);
+	if (hi - lo == 1) cur += dir;
+	else cur += ((hi - lo) / 2) * dir;
+    }
+    if (set->invalid) loadSet(cat, set);
+    return(set);
+}
+
+
+static MCMsgT	*MCGetMsg( set, msgId)
+MCSetT *set;
+int msgId;
+{
+    MCMsgT	*msg;
+    long	lo, hi, cur, dir;
+
+    if (!set || set->invalid || msgId <= 0) return(NULL);
+
+    lo = 0;
+    if (msgId - 1 < set->numMsgs) {
+	cur = msgId - 1;
+	hi = msgId;
+    } else {
+	hi = set->numMsgs;
+	cur = (hi - lo) / 2;
+    }
+
+    while (True) {
+	msg = set->u.msgs + cur;
+	if (msg->msgId == msgId) break;
+	if (msg->msgId < msgId) {
+	    lo = cur+1;
+	    if (hi > cur + (msgId - msg->msgId) + 1) hi = cur+(msgId-msg->msgId)+1;
+	    dir = 1;
+	} else {
+	    hi = cur;
+	    dir = -1;
+	}
+	if (lo >= hi) return(NULL);
+	if (hi - lo == 1) cur += dir;
+	else cur += ((hi - lo) / 2) * dir;
+    }
+    return(msg);
+}
+
+char	*_catgets( catd, setId, msgId, dflt)
+nl_catd catd;
+int setId;
+int msgId;
+char *dflt;
+{
+    MCMsgT	*msg;
+    MCCatT	*cat = (MCCatT *) catd;
+    char	*cptr;
+
+    msg = MCGetMsg(MCGetSet(cat, setId), msgId);
+    if (msg) cptr = msg->msg.str;
+    else cptr = dflt;
+    return(cptr);
+}
+
+
+int		_catclose( catd)
+nl_catd catd;
+{
+    MCCatT	*cat = (MCCatT *) catd;
+    MCSetT	*set;
+    int		i;
+
+    if (!cat) return -1;
+
+    if (cat->loadType != MCLoadAll) close(cat->fd);
+    for (i = 0; i < cat->numSets; ++i) {
+	set = cat->sets + i;
+	if (!set->invalid) {
+	    free(set->data.str);
+	    free(set->u.msgs);
+	}
+    }
+    free(cat->sets);
+    free(cat);
+
+    return 0;
+}
+
+/*
+ * Internal routines
+ */
+
+/* Note that only malloc failures are allowed to return an error */
+#define ERRNAME	"Message Catalog System"
+#define CORRUPT() {fprintf(stderr, "%s: corrupt file.\n", ERRNAME); return(0);}
+#define NOSPACE() {fprintf(stderr, "%s: no more memory.\n", ERRNAME); return(NLERR);}
+
+static nl_catd loadCat( catpath, type)
+__const char *catpath;
+int type;
+{
+    MCHeaderT	header;
+    MCCatT	*cat;
+    MCSetT	*set;
+    long	i;
+    off_t	nextSet;
+
+    cat = (MCCatT *) malloc(sizeof(MCCatT));
+    if (!cat) return(NLERR);
+    cat->loadType = type;
+
+    if ((cat->fd = open(catpath, O_RDONLY)) < 0) {
+	return(0);
+    }
+
+    fcntl(cat->fd, F_SETFD, FD_CLOEXEC);
+
+    if (read(cat->fd, &header, sizeof(header)) != sizeof(header)) CORRUPT();
+
+    if (strncmp(header.magic, MCMagic, MCMagicLen) != 0) CORRUPT();
+
+    if (header.majorVer != MCMajorVer) {
+	fprintf(stderr, "%s: %s is version %d, we need %d.\n", ERRNAME,
+		catpath, header.majorVer, MCMajorVer);
+	return(0);
+    }
+
+    if (header.numSets <= 0) {
+	fprintf(stderr, "%s: %s has %d sets!\n", ERRNAME, catpath,
+		header.numSets);
+	return(0);
+    }
+
+    cat->numSets = header.numSets;
+    cat->sets = (MCSetT *) malloc(sizeof(MCSetT) * header.numSets);
+    if (!cat->sets) NOSPACE();
+
+    nextSet = header.firstSet;
+    for (i = 0; i < cat->numSets; ++i) {
+	if (lseek(cat->fd, nextSet, 0) == -1) CORRUPT();
+
+	/* read in the set header */
+	set = cat->sets + i;
+	if (read(cat->fd, set, sizeof(*set)) != sizeof(*set)) CORRUPT();
+
+	/* if it's invalid, skip over it (and backup 'i') */
+
+	if (set->invalid) {
+	    --i;
+	    nextSet = set->nextSet;
+	    continue;
+	}
+
+	if (cat->loadType == MCLoadAll) {
+	    nl_catd	res;
+	    if ((res = loadSet(cat, set)) <= 0) {
+		if (res == -1) NOSPACE();
+		CORRUPT();
+	    }
+	} else set->invalid = True;
+	nextSet = set->nextSet;
+    }
+    if (cat->loadType == MCLoadAll) {
+	close(cat->fd);
+	cat->fd = -1;
+    }
+    return((nl_catd) cat);
+}
+
+static nl_catd loadSet( cat, set)
+MCCatT *cat;
+MCSetT *set;
+{
+    MCMsgT	*msg;
+    int		i;
+
+    /* Get the data */
+    if (lseek(cat->fd, set->data.off, 0) == -1) return(0);
+    if ((set->data.str = (char *) malloc(set->dataLen)) == NULL) return(-1);
+    if (read(cat->fd, set->data.str, set->dataLen) != set->dataLen) return(0);
+
+    /* Get the messages */
+    if (lseek(cat->fd, set->u.firstMsg, 0) == -1) return(0);
+    if ((set->u.msgs = (MCMsgT *) malloc(sizeof(MCMsgT) * set->numMsgs)) == NULL) return(-1);
+
+    for (i = 0; i < set->numMsgs; ++i) {
+	msg = set->u.msgs + i;
+	if (read(cat->fd, msg, sizeof(*msg)) != sizeof(*msg)) return(0);
+	if (msg->invalid) {
+	    --i;
+	    continue;
+	}
+	msg->msg.str = (char *) (set->data.str + msg->msg.off);
+    }
+    set->invalid = False;
+    return(1);
+}
+
+
+
+
+
diff --git a/lib/libc/nls/msgcat.h b/lib/libc/nls/msgcat.h
new file mode 100644
index 0000000..4fabb59
--- /dev/null
+++ b/lib/libc/nls/msgcat.h
@@ -0,0 +1,170 @@
+/*	$Id: msgcat.h,v 1.1 1995/03/30 12:47:27 jkh Exp $ */
+
+/* -*-c++-*- */
+
+#ifndef __msgcath
+
+
+/***********************************************************
+Copyright 1990, by Alfalfa Software Incorporated, Cambridge, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that Alfalfa's name not be used in
+advertising or publicity pertaining to distribution of the software
+without specific, written prior permission.
+
+ALPHALPHA DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+ALPHALPHA BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+If you make any modifications, bugfixes or other changes to this software
+we'd appreciate it if you could send a copy to us so we can keep things
+up-to-date.  Many thanks.
+				Kee Hinckley
+				Alfalfa Software, Inc.
+				267 Allston St., #3
+				Cambridge, MA 02139  USA
+				nazgul@alfalfa.com
+
+******************************************************************/
+
+
+#include <sys/types.h>
+
+/*
+ * On disk data structures
+ */
+
+/* Edit History
+
+02/25/91   2 nazgul	Byte order flags, upped the version number
+11/03/90   1 hamilton	Alphalpha->Alfalfa & OmegaMail->Poste
+08/13/90   1 schulert	move from ua to omu
+*/
+
+/* For or'd constants */
+#define MCMakeId(s,m)		(unsigned long) ( ((unsigned short)s << (sizeof(short)*8)) \
+						 | (unsigned short)m )
+#define MCSetId(id)		(unsigned int) ( id >> (sizeof(short) * 8) )
+#define MCMsgId(id)		(unsigned int) ( (id << (sizeof(short) * 8)) \
+						>> (sizeof(short) * 8) )
+#undef S
+#undef UI
+#undef UL
+
+#define MCMagicLen	8
+#define MCMagic		"*nazgul*"
+#define MCLastMsg	0
+#define MCLastSet	0
+
+#define MCMajorVer	1
+#define MCMinorVer	0
+
+/*
+ * Critical note here.  Sets and Messages *MUST* be stored in ascending
+ * order.  There are stored that way (by specification) in the original
+ * data file, however in the process of merging in new stuff you might
+ * mix that up.  Don't!  The catget stuff does a binary search and will
+ * totally lose it if these aren't in order (not contiguous mind you, just
+ * in order.  If this turns out to be a major problem this could be enhanced
+ * by adding a 'sorted' flag to the db, and sorting msgs and sets at load
+ * time if things aren't sorted, but I'd like not to have to do that.
+ */
+
+/*
+ * I have tried here to define data structures which can be used
+ * while the catalog is on disk, and at runtime.
+ * This is rather dangerous of course, but I think it can be done without
+ * overly increasing the memory usage, and it makes loading and storing
+ * somewhat simpler and less prone to accidents.  I have also tried to
+ * define on disk data structures which can be updated in place, so that
+ * with a very large catalog (e.g. all system errors) you don't have to
+ * load everything in memory in order to add or update one set.  With
+ * this in mind there are "invalid" flags which allow items to be
+ * invalidated and thus not loaded at runtime.  Note however that although
+ * I pay attention to these when I load the DB, I do not currently use
+ * them in gencat (it just reads everything into memory), so there is
+ * no guarantee that this will all work.
+ */
+
+/* These should be publicly available */
+
+#define MCLoadBySet	0	/* Load entire sets as they are used */
+#define MCLoadAll	1	/* Load entire DB on catopen */
+
+/*
+ * MCOffsetT - Union to handle both disk and runtime pointers
+ */
+typedef union {
+    off_t	off;
+    char	*str;
+    void	*ptr;
+    struct _MCMsgT	*msg;
+    struct _MCSetT	*set;
+} MCOffsetT;
+
+/*
+ * MCMsgT - Message structure (disk and runtime)
+ */
+typedef struct _MCMsgT {
+    long	msgId;		/* Id of this message */
+    MCOffsetT	msg;		/* Relative offset on disk or pointer in memory */
+    long	invalid;	/* Valid on disk, loaded in memory */
+} MCMsgT;
+
+/*
+ * MCSetT - Set structure (disk and runtime)
+ */
+typedef struct _MCSetT {
+    long	setId;		/* Id of this set */
+    off_t	nextSet;	/* Offset of next set on disk */
+    union {
+	off_t	firstMsg;	/* Offset to first Msg (while on disk) */
+	MCMsgT	*msgs;		/* Pointer to array of msgs (in mem, loaded) */
+    } u;
+    MCOffsetT	data;		/* Offset to data, or pointer to data */
+    long	dataLen;	/* Length of data area on disk */
+    long	numMsgs;	/* Number of messages */
+    long	invalid;	/* Valid on disk, loaded in memory */
+} MCSetT;
+
+/*
+ * MCCatT - Runtime catalog pointer
+ */
+typedef struct {
+    long	loadType;	/* How to load the messages (see MSLoadType) */
+    int		fd;		/* File descriptor of catalog (if load-on-demand) */
+    long	numSets;	/* Number of sets */
+    MCSetT	*sets;		/* Pointer to the sets */
+    off_t	firstSet;	/* Offset of first set on disk */
+} MCCatT;
+
+/*
+ * MCHeaderT - Disk file header
+ */
+typedef struct {
+    char	magic[MCMagicLen];	/* Magic cookie "*nazgul*" */
+    long	majorVer;		/* ++ on incompatible changes */
+    long	minorVer;		/* ++ on compatible changes */
+    long	flags;			/* Informational flags */
+    long	numSets;		/* Number of valid Sets */
+    off_t	firstSet;		/* Offset of first set on disk */
+} MCHeaderT;
+
+/* Some flags */
+#define MC68KByteOrder	0x01
+#define MCn86ByteOrder	0x02
+
+
+
+
+#endif
diff --git a/lib/libc/quad/Makefile.inc b/lib/libc/quad/Makefile.inc
new file mode 100644
index 0000000..617aae3
--- /dev/null
+++ b/lib/libc/quad/Makefile.inc
@@ -0,0 +1,19 @@
+#	@(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+
+# Quad support, if needed
+
+.if ${MACHINE} == "i386"
+
+SRCS+=	cmpdi2.c divdi3.c moddi3.c qdivrem.c ucmpdi2.c udivdi3.c umoddi3.c
+
+.else
+
+SRCS+=	adddi3.c anddi3.c ashldi3.c ashrdi3.c cmpdi2.c divdi3.c fixdfdi.c \
+	fixsfdi.c fixunsdfdi.c fixunssfdi.c floatdidf.c floatdisf.c \
+	floatunsdidf.c iordi3.c lshldi3.c lshrdi3.c moddi3.c muldi3.c \
+	negdi2.c notdi2.c qdivrem.c subdi3.c ucmpdi2.c udivdi3.c umoddi3.c \
+	xordi3.c
+
+.endif
+
+.PATH: ${.CURDIR}/${MACHINE}/quad ${.CURDIR}/quad
diff --git a/lib/libc/quad/TESTS/Makefile b/lib/libc/quad/TESTS/Makefile
new file mode 100644
index 0000000..3d37abf
--- /dev/null
+++ b/lib/libc/quad/TESTS/Makefile
@@ -0,0 +1,11 @@
+#	@(#)Makefile	8.1 (Berkeley) 6/4/93
+
+all: mul divrem
+
+MUL=	mul.c ../muldi3.c
+mul: ${MUL}
+	gcc -g -DSPARC_XXX ${MUL} -o $@
+
+DIVREM=	divrem.c ../qdivrem.c
+divrem: ${DIVREM}
+	gcc -g -DSPARC_XXX ${DIVREM} -o $@
diff --git a/lib/libc/quad/TESTS/divrem.c b/lib/libc/quad/TESTS/divrem.c
new file mode 100644
index 0000000..73be605
--- /dev/null
+++ b/lib/libc/quad/TESTS/divrem.c
@@ -0,0 +1,78 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1992, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)divrem.c	8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <stdio.h>
+
+main()
+{
+	union { long long q; unsigned long v[2]; } a, b, q, r;
+	char buf[300];
+	extern long long __qdivrem(unsigned long long, unsigned long long,
+	    unsigned long long *);
+
+	for (;;) {
+		printf("> ");
+		if (fgets(buf, sizeof buf, stdin) == NULL)
+			break;
+		if (sscanf(buf, "%lu:%lu %lu:%lu",
+			    &a.v[0], &a.v[1], &b.v[0], &b.v[1]) != 4 &&
+		    sscanf(buf, "0x%lx:%lx 0x%lx:%lx",
+			    &a.v[0], &a.v[1], &b.v[0], &b.v[1]) != 4) {
+			printf("eh?\n");
+			continue;
+		}
+		q.q = __qdivrem(a.q, b.q, &r.q);
+		printf("%lx:%lx /%% %lx:%lx => q=%lx:%lx r=%lx:%lx\n",
+		    a.v[0], a.v[1], b.v[0], b.v[1],
+		    q.v[0], q.v[1], r.v[0], r.v[1]);
+		printf("  = %lX%08lX / %lX%08lX => %lX%08lX\n\
+  = %lX%08lX %% %lX%08lX => %lX%08lX\n",
+		    a.v[0], a.v[1], b.v[0], b.v[1], q.v[0], q.v[1],
+		    a.v[0], a.v[1], b.v[0], b.v[1], r.v[0], r.v[1]);
+	}
+	exit(0);
+}
diff --git a/lib/libc/quad/TESTS/mul.c b/lib/libc/quad/TESTS/mul.c
new file mode 100644
index 0000000..1ab00f1
--- /dev/null
+++ b/lib/libc/quad/TESTS/mul.c
@@ -0,0 +1,74 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1992, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)mul.c	8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <stdio.h>
+
+main()
+{
+	union { long long q; unsigned long v[2]; } a, b, m;
+	char buf[300];
+	extern long long __muldi3(long long, long long);
+
+	for (;;) {
+		printf("> ");
+		if (fgets(buf, sizeof buf, stdin) == NULL)
+			break;
+		if (sscanf(buf, "%lu:%lu %lu:%lu",
+			    &a.v[0], &a.v[1], &b.v[0], &b.v[1]) != 4 &&
+		    sscanf(buf, "0x%lx:%lx 0x%lx:%lx",
+			    &a.v[0], &a.v[1], &b.v[0], &b.v[1]) != 4) {
+			printf("eh?\n");
+			continue;
+		}
+		m.q = __muldi3(a.q, b.q);
+		printf("%lx:%lx * %lx:%lx => %lx:%lx\n",
+		    a.v[0], a.v[1], b.v[0], b.v[1], m.v[0], m.v[1]);
+		printf("  = %lX%08lX * %lX%08lX => %lX%08lX\n",
+		    a.v[0], a.v[1], b.v[0], b.v[1], m.v[0], m.v[1]);
+	}
+	exit(0);
+}
diff --git a/lib/libc/quad/adddi3.c b/lib/libc/quad/adddi3.c
new file mode 100644
index 0000000..d10da47
--- /dev/null
+++ b/lib/libc/quad/adddi3.c
@@ -0,0 +1,60 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)adddi3.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Add two quads.  This is trivial since a one-bit carry from a single
+ * u_long addition x+y occurs if and only if the sum x+y is less than
+ * either x or y (the choice to compare with x or y is arbitrary).
+ */
+quad_t
+__adddi3(a, b)
+	quad_t a, b;
+{
+	union uu aa, bb, sum;
+
+	aa.q = a;
+	bb.q = b;
+	sum.ul[L] = aa.ul[L] + bb.ul[L];
+	sum.ul[H] = aa.ul[H] + bb.ul[H] + (sum.ul[L] < bb.ul[L]);
+	return (sum.q);
+}
diff --git a/lib/libc/quad/anddi3.c b/lib/libc/quad/anddi3.c
new file mode 100644
index 0000000..5ae45ac
--- /dev/null
+++ b/lib/libc/quad/anddi3.c
@@ -0,0 +1,58 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)anddi3.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Return a & b, in quad.
+ */
+quad_t
+__anddi3(a, b)
+	quad_t a, b;
+{
+	union uu aa, bb;
+
+	aa.q = a;
+	bb.q = b;
+	aa.ul[0] &= bb.ul[0];
+	aa.ul[1] &= bb.ul[1];
+	return (aa.q);
+}
diff --git a/lib/libc/quad/ashldi3.c b/lib/libc/quad/ashldi3.c
new file mode 100644
index 0000000..72501ad
--- /dev/null
+++ b/lib/libc/quad/ashldi3.c
@@ -0,0 +1,66 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ashldi3.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Shift a (signed) quad value left (arithmetic shift left).
+ * This is the same as logical shift left!
+ */
+quad_t
+__ashldi3(a, shift)
+	quad_t a;
+	qshift_t shift;
+{
+	union uu aa;
+
+	aa.q = a;
+	if (shift >= LONG_BITS) {
+		aa.ul[H] = shift >= QUAD_BITS ? 0 :
+		    aa.ul[L] << (shift - LONG_BITS);
+		aa.ul[L] = 0;
+	} else if (shift > 0) {
+		aa.ul[H] = (aa.ul[H] << shift) |
+		    (aa.ul[L] >> (LONG_BITS - shift));
+		aa.ul[L] <<= shift;
+	}
+	return (aa.q);
+}
diff --git a/lib/libc/quad/ashrdi3.c b/lib/libc/quad/ashrdi3.c
new file mode 100644
index 0000000..9ffa5ed
--- /dev/null
+++ b/lib/libc/quad/ashrdi3.c
@@ -0,0 +1,75 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ashrdi3.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Shift a (signed) quad value right (arithmetic shift right).
+ */
+quad_t
+__ashrdi3(a, shift)
+	quad_t a;
+	qshift_t shift;
+{
+	union uu aa;
+
+	aa.q = a;
+	if (shift >= LONG_BITS) {
+		long s;
+
+		/*
+		 * Smear bits rightward using the machine's right-shift
+		 * method, whether that is sign extension or zero fill,
+		 * to get the `sign word' s.  Note that shifting by
+		 * LONG_BITS is undefined, so we shift (LONG_BITS-1),
+		 * then 1 more, to get our answer.
+		 */
+		s = (aa.sl[H] >> (LONG_BITS - 1)) >> 1;
+		aa.ul[L] = shift >= QUAD_BITS ? s :
+		    aa.sl[H] >> (shift - LONG_BITS);
+		aa.ul[H] = s;
+	} else if (shift > 0) {
+		aa.ul[L] = (aa.ul[L] >> shift) |
+		    (aa.ul[H] << (LONG_BITS - shift));
+		aa.sl[H] >>= shift;
+	}
+	return (aa.q);
+}
diff --git a/lib/libc/quad/cmpdi2.c b/lib/libc/quad/cmpdi2.c
new file mode 100644
index 0000000..f6e4bdd
--- /dev/null
+++ b/lib/libc/quad/cmpdi2.c
@@ -0,0 +1,59 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)cmpdi2.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Return 0, 1, or 2 as a <, =, > b respectively.
+ * Both a and b are considered signed---which means only the high word is
+ * signed.
+ */
+int
+__cmpdi2(a, b)
+	quad_t a, b;
+{
+	union uu aa, bb;
+
+	aa.q = a;
+	bb.q = b;
+	return (aa.sl[H] < bb.sl[H] ? 0 : aa.sl[H] > bb.sl[H] ? 2 :
+	    aa.ul[L] < bb.ul[L] ? 0 : aa.ul[L] > bb.ul[L] ? 2 : 1);
+}
diff --git a/lib/libc/quad/divdi3.c b/lib/libc/quad/divdi3.c
new file mode 100644
index 0000000..da7b2fc
--- /dev/null
+++ b/lib/libc/quad/divdi3.c
@@ -0,0 +1,65 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)divdi3.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Divide two signed quads.
+ * ??? if -1/2 should produce -1 on this machine, this code is wrong
+ */
+quad_t
+__divdi3(a, b)
+	quad_t a, b;
+{
+	u_quad_t ua, ub, uq;
+	int neg;
+
+	if (a < 0)
+		ua = -(u_quad_t)a, neg = 1;
+	else
+		ua = a, neg = 0;
+	if (b < 0)
+		ub = -(u_quad_t)b, neg ^= 1;
+	else
+		ub = b;
+	uq = __qdivrem(ua, ub, (u_quad_t *)0);
+	return (neg ? -uq : uq);
+}
diff --git a/lib/libc/quad/fixdfdi.c b/lib/libc/quad/fixdfdi.c
new file mode 100644
index 0000000..6d57550
--- /dev/null
+++ b/lib/libc/quad/fixdfdi.c
@@ -0,0 +1,62 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fixdfdi.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Convert double to (signed) quad.
+ * We clamp anything that is out of range.
+ */
+quad_t
+__fixdfdi(x)
+	double x;
+{
+	if (x < 0)
+		if (x <= QUAD_MIN)
+			return (QUAD_MIN);
+		else
+			return ((quad_t)-(u_quad_t)-x);
+	else
+		if (x >= QUAD_MAX)
+			return (QUAD_MAX);
+		else
+			return ((quad_t)(u_quad_t)x);
+}
diff --git a/lib/libc/quad/fixsfdi.c b/lib/libc/quad/fixsfdi.c
new file mode 100644
index 0000000..448109f
--- /dev/null
+++ b/lib/libc/quad/fixsfdi.c
@@ -0,0 +1,63 @@
+/*-
+ * Copyright (c) 1992 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fixsfdi.c	5.1 (Berkeley) 7/7/92";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Convert float to (signed) quad.
+ * We clamp anything that is out of range.
+ *
+ * N.B.: must use new ANSI syntax (sorry).
+ */
+long long
+__fixsfdi(float x)
+{
+	if (x < 0)
+		if (x <= QUAD_MIN)
+			return (QUAD_MIN);
+		else
+			return ((quad_t)-(u_quad_t)-x);
+	else
+		if (x >= QUAD_MAX)
+			return (QUAD_MAX);
+		else
+			return ((quad_t)(u_quad_t)x);
+}
diff --git a/lib/libc/quad/fixunsdfdi.c b/lib/libc/quad/fixunsdfdi.c
new file mode 100644
index 0000000..601790f
--- /dev/null
+++ b/lib/libc/quad/fixunsdfdi.c
@@ -0,0 +1,96 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fixunsdfdi.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+#define	ONE_FOURTH	(1 << (LONG_BITS - 2))
+#define	ONE_HALF	(ONE_FOURTH * 2.0)
+#define	ONE		(ONE_FOURTH * 4.0)
+
+/*
+ * Convert double to (unsigned) quad.
+ * Not sure what to do with negative numbers---for now, anything out
+ * of range becomes UQUAD_MAX.
+ */
+u_quad_t
+__fixunsdfdi(x)
+	double x;
+{
+	double toppart;
+	union uu t;
+
+	if (x < 0)
+		return (UQUAD_MAX);	/* ??? should be 0?  ERANGE??? */
+#ifdef notdef				/* this falls afoul of a GCC bug */
+	if (x >= UQUAD_MAX)
+		return (UQUAD_MAX);
+#else					/* so we wire in 2^64-1 instead */
+	if (x >= 18446744073709551615.0)
+		return (UQUAD_MAX);
+#endif
+	/*
+	 * Get the upper part of the result.  Note that the divide
+	 * may round up; we want to avoid this if possible, so we
+	 * subtract `1/2' first.
+	 */
+	toppart = (x - ONE_HALF) / ONE;
+	/*
+	 * Now build a u_quad_t out of the top part.  The difference
+	 * between x and this is the bottom part (this may introduce
+	 * a few fuzzy bits, but what the heck).  With any luck this
+	 * difference will be nonnegative: x should wind up in the
+	 * range [0..ULONG_MAX].  For paranoia, we assume [LONG_MIN..
+	 * 2*ULONG_MAX] instead.
+	 */
+	t.ul[H] = (unsigned long)toppart;
+	t.ul[L] = 0;
+	x -= (double)t.uq;
+	if (x < 0) {
+		t.ul[H]--;
+		x += ULONG_MAX;
+	}
+	if (x > ULONG_MAX) {
+		t.ul[H]++;
+		x -= ULONG_MAX;
+	}
+	t.ul[L] = (u_long)x;
+	return (t.uq);
+}
diff --git a/lib/libc/quad/fixunssfdi.c b/lib/libc/quad/fixunssfdi.c
new file mode 100644
index 0000000..9405ce7
--- /dev/null
+++ b/lib/libc/quad/fixunssfdi.c
@@ -0,0 +1,100 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fixunssfdi.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+#define	ONE_FOURTH	(1 << (LONG_BITS - 2))
+#define	ONE_HALF	(ONE_FOURTH * 2.0)
+#define	ONE		(ONE_FOURTH * 4.0)
+
+/*
+ * Convert float to (unsigned) quad.  We do most of our work in double,
+ * out of sheer paranoia.
+ *
+ * Not sure what to do with negative numbers---for now, anything out
+ * of range becomes UQUAD_MAX.
+ *
+ * N.B.: must use new ANSI syntax (sorry).
+ */
+u_quad_t
+__fixunssfdi(float f)
+{
+	double x, toppart;
+	union uu t;
+
+	if (f < 0)
+		return (UQUAD_MAX);	/* ??? should be 0?  ERANGE??? */
+#ifdef notdef				/* this falls afoul of a GCC bug */
+	if (f >= UQUAD_MAX)
+		return (UQUAD_MAX);
+#else					/* so we wire in 2^64-1 instead */
+	if (f >= 18446744073709551615.0)
+		return (UQUAD_MAX);
+#endif
+	x = f;
+	/*
+	 * Get the upper part of the result.  Note that the divide
+	 * may round up; we want to avoid this if possible, so we
+	 * subtract `1/2' first.
+	 */
+	toppart = (x - ONE_HALF) / ONE;
+	/*
+	 * Now build a u_quad_t out of the top part.  The difference
+	 * between x and this is the bottom part (this may introduce
+	 * a few fuzzy bits, but what the heck).  With any luck this
+	 * difference will be nonnegative: x should wind up in the
+	 * range [0..ULONG_MAX].  For paranoia, we assume [LONG_MIN..
+	 * 2*ULONG_MAX] instead.
+	 */
+	t.ul[H] = (unsigned long)toppart;
+	t.ul[L] = 0;
+	x -= (double)t.uq;
+	if (x < 0) {
+		t.ul[H]--;
+		x += ULONG_MAX;
+	}
+	if (x > ULONG_MAX) {
+		t.ul[H]++;
+		x -= ULONG_MAX;
+	}
+	t.ul[L] = (u_long)x;
+	return (t.uq);
+}
diff --git a/lib/libc/quad/floatdidf.c b/lib/libc/quad/floatdidf.c
new file mode 100644
index 0000000..7b90f6e
--- /dev/null
+++ b/lib/libc/quad/floatdidf.c
@@ -0,0 +1,74 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)floatdidf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Convert (signed) quad to double.
+ */
+double
+__floatdidf(x)
+	quad_t x;
+{
+	double d;
+	union uu u;
+	int neg;
+
+	/*
+	 * Get an unsigned number first, by negating if necessary.
+	 */
+	if (x < 0)
+		u.q = -x, neg = 1;
+	else
+		u.q = x, neg = 0;
+
+	/*
+	 * Now u.ul[H] has the factor of 2^32 (or whatever) and u.ul[L]
+	 * has the units.  Ideally we could just set d, add LONG_BITS to
+	 * its exponent, and then add the units, but this is portable
+	 * code and does not know how to get at an exponent.  Machine-
+	 * specific code may be able to do this more efficiently.
+	 */
+	d = (double)u.ul[H] * ((1 << (LONG_BITS - 2)) * 4.0);
+	d += u.ul[L];
+
+	return (neg ? -d : d);
+}
diff --git a/lib/libc/quad/floatdisf.c b/lib/libc/quad/floatdisf.c
new file mode 100644
index 0000000..7772218
--- /dev/null
+++ b/lib/libc/quad/floatdisf.c
@@ -0,0 +1,76 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)floatdisf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Convert (signed) quad to float.
+ */
+float
+__floatdisf(x)
+	quad_t x;
+{
+	float f;
+	union uu u;
+	int neg;
+
+	/*
+	 * Get an unsigned number first, by negating if necessary.
+	 */
+	if (x < 0)
+		u.q = -x, neg = 1;
+	else
+		u.q = x, neg = 0;
+
+	/*
+	 * Now u.ul[H] has the factor of 2^32 (or whatever) and u.ul[L]
+	 * has the units.  Ideally we could just set f, add LONG_BITS to
+	 * its exponent, and then add the units, but this is portable
+	 * code and does not know how to get at an exponent.  Machine-
+	 * specific code may be able to do this more efficiently.
+	 *
+	 * Using double here may be excessive paranoia.
+	 */
+	f = (double)u.ul[H] * ((1 << (LONG_BITS - 2)) * 4.0);
+	f += u.ul[L];
+
+	return (neg ? -f : f);
+}
diff --git a/lib/libc/quad/floatunsdidf.c b/lib/libc/quad/floatunsdidf.c
new file mode 100644
index 0000000..2fb6401
--- /dev/null
+++ b/lib/libc/quad/floatunsdidf.c
@@ -0,0 +1,59 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)floatunsdidf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Convert (unsigned) quad to double.
+ * This is exactly like floatdidf.c except that negatives never occur.
+ */
+double
+__floatunsdidf(x)
+	u_quad_t x;
+{
+	double d;
+	union uu u;
+
+	u.uq = x;
+	d = (double)u.ul[H] * ((1 << (LONG_BITS - 2)) * 4.0);
+	d += u.ul[L];
+	return (d);
+}
diff --git a/lib/libc/quad/iordi3.c b/lib/libc/quad/iordi3.c
new file mode 100644
index 0000000..e225005
--- /dev/null
+++ b/lib/libc/quad/iordi3.c
@@ -0,0 +1,58 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)iordi3.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Return a | b, in quad.
+ */
+quad_t
+__iordi3(a, b)
+	quad_t a, b;
+{
+	union uu aa, bb;
+
+	aa.q = a;
+	bb.q = b;
+	aa.ul[0] |= bb.ul[0];
+	aa.ul[1] |= bb.ul[1];
+	return (aa.q);
+}
diff --git a/lib/libc/quad/lshldi3.c b/lib/libc/quad/lshldi3.c
new file mode 100644
index 0000000..0af6051
--- /dev/null
+++ b/lib/libc/quad/lshldi3.c
@@ -0,0 +1,66 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)lshldi3.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Shift an (unsigned) quad value left (logical shift left).
+ * This is the same as arithmetic shift left!
+ */
+quad_t
+__lshldi3(a, shift)
+	quad_t a;
+	qshift_t shift;
+{
+	union uu aa;
+
+	aa.q = a;
+	if (shift >= LONG_BITS) {
+		aa.ul[H] = shift >= QUAD_BITS ? 0 :
+		    aa.ul[L] << (shift - LONG_BITS);
+		aa.ul[L] = 0;
+	} else if (shift > 0) {
+		aa.ul[H] = (aa.ul[H] << shift) |
+		    (aa.ul[L] >> (LONG_BITS - shift));
+		aa.ul[L] <<= shift;
+	}
+	return (aa.q);
+}
diff --git a/lib/libc/quad/lshrdi3.c b/lib/libc/quad/lshrdi3.c
new file mode 100644
index 0000000..add2eda
--- /dev/null
+++ b/lib/libc/quad/lshrdi3.c
@@ -0,0 +1,65 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)lshrdi3.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Shift an (unsigned) quad value right (logical shift right).
+ */
+quad_t
+__lshrdi3(a, shift)
+	quad_t a;
+	qshift_t shift;
+{
+	union uu aa;
+
+	aa.q = a;
+	if (shift >= LONG_BITS) {
+		aa.ul[L] = shift >= QUAD_BITS ? 0 :
+		    aa.ul[H] >> (shift - LONG_BITS);
+		aa.ul[H] = 0;
+	} else if (shift > 0) {
+		aa.ul[L] = (aa.ul[L] >> shift) |
+		    (aa.ul[H] << (LONG_BITS - shift));
+		aa.ul[H] >>= shift;
+	}
+	return (aa.q);
+}
diff --git a/lib/libc/quad/moddi3.c b/lib/libc/quad/moddi3.c
new file mode 100644
index 0000000..f31c6e8
--- /dev/null
+++ b/lib/libc/quad/moddi3.c
@@ -0,0 +1,67 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)moddi3.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Return remainder after dividing two signed quads.
+ *
+ * XXX
+ * If -1/2 should produce -1 on this machine, this code is wrong.
+ */
+quad_t
+__moddi3(a, b)
+	quad_t a, b;
+{
+	u_quad_t ua, ub, ur;
+	int neg;
+
+	if (a < 0)
+		ua = -(u_quad_t)a, neg = 1;
+	else
+		ua = a, neg = 0;
+	if (b < 0)
+		ub = -(u_quad_t)b, neg ^= 1;
+	else
+		ub = b;
+	(void)__qdivrem(ua, ub, &ur);
+	return (neg ? -ur : ur);
+}
diff --git a/lib/libc/quad/muldi3.c b/lib/libc/quad/muldi3.c
new file mode 100644
index 0000000..5e2331f
--- /dev/null
+++ b/lib/libc/quad/muldi3.c
@@ -0,0 +1,246 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)muldi3.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Multiply two quads.
+ *
+ * Our algorithm is based on the following.  Split incoming quad values
+ * u and v (where u,v >= 0) into
+ *
+ *	u = 2^n u1  *  u0	(n = number of bits in `u_long', usu. 32)
+ *
+ * and
+ *
+ *	v = 2^n v1  *  v0
+ *
+ * Then
+ *
+ *	uv = 2^2n u1 v1  +  2^n u1 v0  +  2^n v1 u0  +  u0 v0
+ *	   = 2^2n u1 v1  +     2^n (u1 v0 + v1 u0)   +  u0 v0
+ *
+ * Now add 2^n u1 v1 to the first term and subtract it from the middle,
+ * and add 2^n u0 v0 to the last term and subtract it from the middle.
+ * This gives:
+ *
+ *	uv = (2^2n + 2^n) (u1 v1)  +
+ *	         (2^n)    (u1 v0 - u1 v1 + u0 v1 - u0 v0)  +
+ *	       (2^n + 1)  (u0 v0)
+ *
+ * Factoring the middle a bit gives us:
+ *
+ *	uv = (2^2n + 2^n) (u1 v1)  +			[u1v1 = high]
+ *		 (2^n)    (u1 - u0) (v0 - v1)  +	[(u1-u0)... = mid]
+ *	       (2^n + 1)  (u0 v0)			[u0v0 = low]
+ *
+ * The terms (u1 v1), (u1 - u0) (v0 - v1), and (u0 v0) can all be done
+ * in just half the precision of the original.  (Note that either or both
+ * of (u1 - u0) or (v0 - v1) may be negative.)
+ *
+ * This algorithm is from Knuth vol. 2 (2nd ed), section 4.3.3, p. 278.
+ *
+ * Since C does not give us a `long * long = quad' operator, we split
+ * our input quads into two longs, then split the two longs into two
+ * shorts.  We can then calculate `short * short = long' in native
+ * arithmetic.
+ *
+ * Our product should, strictly speaking, be a `long quad', with 128
+ * bits, but we are going to discard the upper 64.  In other words,
+ * we are not interested in uv, but rather in (uv mod 2^2n).  This
+ * makes some of the terms above vanish, and we get:
+ *
+ *	(2^n)(high) + (2^n)(mid) + (2^n + 1)(low)
+ *
+ * or
+ *
+ *	(2^n)(high + mid + low) + low
+ *
+ * Furthermore, `high' and `mid' can be computed mod 2^n, as any factor
+ * of 2^n in either one will also vanish.  Only `low' need be computed
+ * mod 2^2n, and only because of the final term above.
+ */
+static quad_t __lmulq(u_long, u_long);
+
+quad_t
+__muldi3(a, b)
+	quad_t a, b;
+{
+	union uu u, v, low, prod;
+	register u_long high, mid, udiff, vdiff;
+	register int negall, negmid;
+#define	u1	u.ul[H]
+#define	u0	u.ul[L]
+#define	v1	v.ul[H]
+#define	v0	v.ul[L]
+
+	/*
+	 * Get u and v such that u, v >= 0.  When this is finished,
+	 * u1, u0, v1, and v0 will be directly accessible through the
+	 * longword fields.
+	 */
+	if (a >= 0)
+		u.q = a, negall = 0;
+	else
+		u.q = -a, negall = 1;
+	if (b >= 0)
+		v.q = b;
+	else
+		v.q = -b, negall ^= 1;
+
+	if (u1 == 0 && v1 == 0) {
+		/*
+		 * An (I hope) important optimization occurs when u1 and v1
+		 * are both 0.  This should be common since most numbers
+		 * are small.  Here the product is just u0*v0.
+		 */
+		prod.q = __lmulq(u0, v0);
+	} else {
+		/*
+		 * Compute the three intermediate products, remembering
+		 * whether the middle term is negative.  We can discard
+		 * any upper bits in high and mid, so we can use native
+		 * u_long * u_long => u_long arithmetic.
+		 */
+		low.q = __lmulq(u0, v0);
+
+		if (u1 >= u0)
+			negmid = 0, udiff = u1 - u0;
+		else
+			negmid = 1, udiff = u0 - u1;
+		if (v0 >= v1)
+			vdiff = v0 - v1;
+		else
+			vdiff = v1 - v0, negmid ^= 1;
+		mid = udiff * vdiff;
+
+		high = u1 * v1;
+
+		/*
+		 * Assemble the final product.
+		 */
+		prod.ul[H] = high + (negmid ? -mid : mid) + low.ul[L] +
+		    low.ul[H];
+		prod.ul[L] = low.ul[L];
+	}
+	return (negall ? -prod.q : prod.q);
+#undef u1
+#undef u0
+#undef v1
+#undef v0
+}
+
+/*
+ * Multiply two 2N-bit longs to produce a 4N-bit quad, where N is half
+ * the number of bits in a long (whatever that is---the code below
+ * does not care as long as quad.h does its part of the bargain---but
+ * typically N==16).
+ *
+ * We use the same algorithm from Knuth, but this time the modulo refinement
+ * does not apply.  On the other hand, since N is half the size of a long,
+ * we can get away with native multiplication---none of our input terms
+ * exceeds (ULONG_MAX >> 1).
+ *
+ * Note that, for u_long l, the quad-precision result
+ *
+ *	l << N
+ *
+ * splits into high and low longs as HHALF(l) and LHUP(l) respectively.
+ */
+static quad_t
+__lmulq(u_long u, u_long v)
+{
+	u_long u1, u0, v1, v0, udiff, vdiff, high, mid, low;
+	u_long prodh, prodl, was;
+	union uu prod;
+	int neg;
+
+	u1 = HHALF(u);
+	u0 = LHALF(u);
+	v1 = HHALF(v);
+	v0 = LHALF(v);
+
+	low = u0 * v0;
+
+	/* This is the same small-number optimization as before. */
+	if (u1 == 0 && v1 == 0)
+		return (low);
+
+	if (u1 >= u0)
+		udiff = u1 - u0, neg = 0;
+	else
+		udiff = u0 - u1, neg = 1;
+	if (v0 >= v1)
+		vdiff = v0 - v1;
+	else
+		vdiff = v1 - v0, neg ^= 1;
+	mid = udiff * vdiff;
+
+	high = u1 * v1;
+
+	/* prod = (high << 2N) + (high << N); */
+	prodh = high + HHALF(high);
+	prodl = LHUP(high);
+
+	/* if (neg) prod -= mid << N; else prod += mid << N; */
+	if (neg) {
+		was = prodl;
+		prodl -= LHUP(mid);
+		prodh -= HHALF(mid) + (prodl > was);
+	} else {
+		was = prodl;
+		prodl += LHUP(mid);
+		prodh += HHALF(mid) + (prodl < was);
+	}
+
+	/* prod += low << N */
+	was = prodl;
+	prodl += LHUP(low);
+	prodh += HHALF(low) + (prodl < was);
+	/* ... + low; */
+	if ((prodl += low) < low)
+		prodh++;
+
+	/* return 4N-bit product */
+	prod.ul[H] = prodh;
+	prod.ul[L] = prodl;
+	return (prod.q);
+}
diff --git a/lib/libc/quad/negdi2.c b/lib/libc/quad/negdi2.c
new file mode 100644
index 0000000..bb8670d
--- /dev/null
+++ b/lib/libc/quad/negdi2.c
@@ -0,0 +1,57 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)negdi2.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Return -a (or, equivalently, 0 - a), in quad.  See subdi3.c.
+ */
+quad_t
+__negdi2(a)
+	quad_t a;
+{
+	union uu aa, res;
+
+	aa.q = a;
+	res.ul[L] = -aa.ul[L];
+	res.ul[H] = -aa.ul[H] - (res.ul[L] > 0);
+	return (res.q);
+}
diff --git a/lib/libc/quad/notdi2.c b/lib/libc/quad/notdi2.c
new file mode 100644
index 0000000..d624733
--- /dev/null
+++ b/lib/libc/quad/notdi2.c
@@ -0,0 +1,58 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)notdi2.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Return ~a.  For some reason gcc calls this `one's complement' rather
+ * than `not'.
+ */
+quad_t
+__one_cmpldi2(a)
+	quad_t a;
+{
+	union uu aa;
+
+	aa.q = a;
+	aa.ul[0] = ~aa.ul[0];
+	aa.ul[1] = ~aa.ul[1];
+	return (aa.q);
+}
diff --git a/lib/libc/quad/qdivrem.c b/lib/libc/quad/qdivrem.c
new file mode 100644
index 0000000..56f91ec
--- /dev/null
+++ b/lib/libc/quad/qdivrem.c
@@ -0,0 +1,279 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)qdivrem.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Multiprecision divide.  This algorithm is from Knuth vol. 2 (2nd ed),
+ * section 4.3.1, pp. 257--259.
+ */
+
+#include "quad.h"
+
+#define	B	(1 << HALF_BITS)	/* digit base */
+
+/* Combine two `digits' to make a single two-digit number. */
+#define	COMBINE(a, b) (((u_long)(a) << HALF_BITS) | (b))
+
+/* select a type for digits in base B: use unsigned short if they fit */
+#if ULONG_MAX == 0xffffffff && USHRT_MAX >= 0xffff
+typedef unsigned short digit;
+#else
+typedef u_long digit;
+#endif
+
+/*
+ * Shift p[0]..p[len] left `sh' bits, ignoring any bits that
+ * `fall out' the left (there never will be any such anyway).
+ * We may assume len >= 0.  NOTE THAT THIS WRITES len+1 DIGITS.
+ */
+static void
+shl(register digit *p, register int len, register int sh)
+{
+	register int i;
+
+	for (i = 0; i < len; i++)
+		p[i] = LHALF(p[i] << sh) | (p[i + 1] >> (HALF_BITS - sh));
+	p[i] = LHALF(p[i] << sh);
+}
+
+/*
+ * __qdivrem(u, v, rem) returns u/v and, optionally, sets *rem to u%v.
+ *
+ * We do this in base 2-sup-HALF_BITS, so that all intermediate products
+ * fit within u_long.  As a consequence, the maximum length dividend and
+ * divisor are 4 `digits' in this base (they are shorter if they have
+ * leading zeros).
+ */
+u_quad_t
+__qdivrem(uq, vq, arq)
+	u_quad_t uq, vq, *arq;
+{
+	union uu tmp;
+	digit *u, *v, *q;
+	register digit v1, v2;
+	u_long qhat, rhat, t;
+	int m, n, d, j, i;
+	digit uspace[5], vspace[5], qspace[5];
+
+	/*
+	 * Take care of special cases: divide by zero, and u < v.
+	 */
+	if (vq == 0) {
+		/* divide by zero. */
+		static volatile const unsigned int zero = 0;
+
+		tmp.ul[H] = tmp.ul[L] = 1 / zero;
+		if (arq)
+			*arq = uq;
+		return (tmp.q);
+	}
+	if (uq < vq) {
+		if (arq)
+			*arq = uq;
+		return (0);
+	}
+	u = &uspace[0];
+	v = &vspace[0];
+	q = &qspace[0];
+
+	/*
+	 * Break dividend and divisor into digits in base B, then
+	 * count leading zeros to determine m and n.  When done, we
+	 * will have:
+	 *	u = (u[1]u[2]...u[m+n]) sub B
+	 *	v = (v[1]v[2]...v[n]) sub B
+	 *	v[1] != 0
+	 *	1 < n <= 4 (if n = 1, we use a different division algorithm)
+	 *	m >= 0 (otherwise u < v, which we already checked)
+	 *	m + n = 4
+	 * and thus
+	 *	m = 4 - n <= 2
+	 */
+	tmp.uq = uq;
+	u[0] = 0;
+	u[1] = HHALF(tmp.ul[H]);
+	u[2] = LHALF(tmp.ul[H]);
+	u[3] = HHALF(tmp.ul[L]);
+	u[4] = LHALF(tmp.ul[L]);
+	tmp.uq = vq;
+	v[1] = HHALF(tmp.ul[H]);
+	v[2] = LHALF(tmp.ul[H]);
+	v[3] = HHALF(tmp.ul[L]);
+	v[4] = LHALF(tmp.ul[L]);
+	for (n = 4; v[1] == 0; v++) {
+		if (--n == 1) {
+			u_long rbj;	/* r*B+u[j] (not root boy jim) */
+			digit q1, q2, q3, q4;
+
+			/*
+			 * Change of plan, per exercise 16.
+			 *	r = 0;
+			 *	for j = 1..4:
+			 *		q[j] = floor((r*B + u[j]) / v),
+			 *		r = (r*B + u[j]) % v;
+			 * We unroll this completely here.
+			 */
+			t = v[2];	/* nonzero, by definition */
+			q1 = u[1] / t;
+			rbj = COMBINE(u[1] % t, u[2]);
+			q2 = rbj / t;
+			rbj = COMBINE(rbj % t, u[3]);
+			q3 = rbj / t;
+			rbj = COMBINE(rbj % t, u[4]);
+			q4 = rbj / t;
+			if (arq)
+				*arq = rbj % t;
+			tmp.ul[H] = COMBINE(q1, q2);
+			tmp.ul[L] = COMBINE(q3, q4);
+			return (tmp.q);
+		}
+	}
+
+	/*
+	 * By adjusting q once we determine m, we can guarantee that
+	 * there is a complete four-digit quotient at &qspace[1] when
+	 * we finally stop.
+	 */
+	for (m = 4 - n; u[1] == 0; u++)
+		m--;
+	for (i = 4 - m; --i >= 0;)
+		q[i] = 0;
+	q += 4 - m;
+
+	/*
+	 * Here we run Program D, translated from MIX to C and acquiring
+	 * a few minor changes.
+	 *
+	 * D1: choose multiplier 1 << d to ensure v[1] >= B/2.
+	 */
+	d = 0;
+	for (t = v[1]; t < B / 2; t <<= 1)
+		d++;
+	if (d > 0) {
+		shl(&u[0], m + n, d);		/* u <<= d */
+		shl(&v[1], n - 1, d);		/* v <<= d */
+	}
+	/*
+	 * D2: j = 0.
+	 */
+	j = 0;
+	v1 = v[1];	/* for D3 -- note that v[1..n] are constant */
+	v2 = v[2];	/* for D3 */
+	do {
+		register digit uj0, uj1, uj2;
+
+		/*
+		 * D3: Calculate qhat (\^q, in TeX notation).
+		 * Let qhat = min((u[j]*B + u[j+1])/v[1], B-1), and
+		 * let rhat = (u[j]*B + u[j+1]) mod v[1].
+		 * While rhat < B and v[2]*qhat > rhat*B+u[j+2],
+		 * decrement qhat and increase rhat correspondingly.
+		 * Note that if rhat >= B, v[2]*qhat < rhat*B.
+		 */
+		uj0 = u[j + 0];	/* for D3 only -- note that u[j+...] change */
+		uj1 = u[j + 1];	/* for D3 only */
+		uj2 = u[j + 2];	/* for D3 only */
+		if (uj0 == v1) {
+			qhat = B;
+			rhat = uj1;
+			goto qhat_too_big;
+		} else {
+			u_long n = COMBINE(uj0, uj1);
+			qhat = n / v1;
+			rhat = n % v1;
+		}
+		while (v2 * qhat > COMBINE(rhat, uj2)) {
+	qhat_too_big:
+			qhat--;
+			if ((rhat += v1) >= B)
+				break;
+		}
+		/*
+		 * D4: Multiply and subtract.
+		 * The variable `t' holds any borrows across the loop.
+		 * We split this up so that we do not require v[0] = 0,
+		 * and to eliminate a final special case.
+		 */
+		for (t = 0, i = n; i > 0; i--) {
+			t = u[i + j] - v[i] * qhat - t;
+			u[i + j] = LHALF(t);
+			t = (B - HHALF(t)) & (B - 1);
+		}
+		t = u[j] - t;
+		u[j] = LHALF(t);
+		/*
+		 * D5: test remainder.
+		 * There is a borrow if and only if HHALF(t) is nonzero;
+		 * in that (rare) case, qhat was too large (by exactly 1).
+		 * Fix it by adding v[1..n] to u[j..j+n].
+		 */
+		if (HHALF(t)) {
+			qhat--;
+			for (t = 0, i = n; i > 0; i--) { /* D6: add back. */
+				t += u[i + j] + v[i];
+				u[i + j] = LHALF(t);
+				t = HHALF(t);
+			}
+			u[j] = LHALF(u[j] + t);
+		}
+		q[j] = qhat;
+	} while (++j <= m);		/* D7: loop on j. */
+
+	/*
+	 * If caller wants the remainder, we have to calculate it as
+	 * u[m..m+n] >> d (this is at most n digits and thus fits in
+	 * u[m+1..m+n], but we may need more source digits).
+	 */
+	if (arq) {
+		if (d) {
+			for (i = m + n; i > m; --i)
+				u[i] = (u[i] >> d) |
+				    LHALF(u[i - 1] << (HALF_BITS - d));
+			u[i] = 0;
+		}
+		tmp.ul[H] = COMBINE(uspace[1], uspace[2]);
+		tmp.ul[L] = COMBINE(uspace[3], uspace[4]);
+		*arq = tmp.q;
+	}
+
+	tmp.ul[H] = COMBINE(qspace[1], qspace[2]);
+	tmp.ul[L] = COMBINE(qspace[3], qspace[4]);
+	return (tmp.q);
+}
diff --git a/lib/libc/quad/quad.h b/lib/libc/quad/quad.h
new file mode 100644
index 0000000..873a1f6
--- /dev/null
+++ b/lib/libc/quad/quad.h
@@ -0,0 +1,115 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)quad.h	8.1 (Berkeley) 6/4/93
+ *	$Id$
+ */
+
+/*
+ * Quad arithmetic.
+ *
+ * This library makes the following assumptions:
+ *
+ *  - The type long long (aka quad_t) exists.
+ *
+ *  - A quad variable is exactly twice as long as `long'.
+ *
+ *  - The machine's arithmetic is two's complement.
+ *
+ * This library can provide 128-bit arithmetic on a machine with 128-bit
+ * quads and 64-bit longs, for instance, or 96-bit arithmetic on machines
+ * with 48-bit longs.
+ */
+
+#include <sys/types.h>
+#include <limits.h>
+
+/*
+ * Depending on the desired operation, we view a `long long' (aka quad_t) in
+ * one or more of the following formats.
+ */
+union uu {
+	quad_t	q;		/* as a (signed) quad */
+	quad_t	uq;		/* as an unsigned quad */
+	long	sl[2];		/* as two signed longs */
+	u_long	ul[2];		/* as two unsigned longs */
+};
+
+/*
+ * Define high and low longwords.
+ */
+#define	H		_QUAD_HIGHWORD
+#define	L		_QUAD_LOWWORD
+
+/*
+ * Total number of bits in a quad_t and in the pieces that make it up.
+ * These are used for shifting, and also below for halfword extraction
+ * and assembly.
+ */
+#define	QUAD_BITS	(sizeof(quad_t) * CHAR_BIT)
+#define	LONG_BITS	(sizeof(long) * CHAR_BIT)
+#define	HALF_BITS	(sizeof(long) * CHAR_BIT / 2)
+
+/*
+ * Extract high and low shortwords from longword, and move low shortword of
+ * longword to upper half of long, i.e., produce the upper longword of
+ * ((quad_t)(x) << (number_of_bits_in_long/2)).  (`x' must actually be u_long.)
+ *
+ * These are used in the multiply code, to split a longword into upper
+ * and lower halves, and to reassemble a product as a quad_t, shifted left
+ * (sizeof(long)*CHAR_BIT/2).
+ */
+#define	HHALF(x)	((x) >> HALF_BITS)
+#define	LHALF(x)	((x) & ((1 << HALF_BITS) - 1))
+#define	LHUP(x)		((x) << HALF_BITS)
+
+quad_t		__divdi3 __P((quad_t a, quad_t b));
+quad_t		__moddi3 __P((quad_t a, quad_t b));
+u_quad_t	__qdivrem __P((u_quad_t u, u_quad_t v, u_quad_t *rem));
+u_quad_t	__udivdi3 __P((u_quad_t a, u_quad_t b));
+u_quad_t	__umoddi3 __P((u_quad_t a, u_quad_t b));
+
+/*
+ * XXX
+ * Compensate for gcc 1 vs gcc 2.  Gcc 1 defines ?sh?di3's second argument
+ * as u_quad_t, while gcc 2 correctly uses int.  Unfortunately, we still use
+ * both compilers.
+ */
+#if __GNUC__ >= 2
+typedef unsigned int	qshift_t;
+#else
+typedef u_quad_t	qshift_t;
+#endif
diff --git a/lib/libc/quad/subdi3.c b/lib/libc/quad/subdi3.c
new file mode 100644
index 0000000..e976345
--- /dev/null
+++ b/lib/libc/quad/subdi3.c
@@ -0,0 +1,59 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)subdi3.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Subtract two quad values.  This is trivial since a one-bit carry
+ * from a single u_long difference x-y occurs if and only if (x-y) > x.
+ */
+quad_t
+__subdi3(a, b)
+	quad_t a, b;
+{
+	union uu aa, bb, diff;
+
+	aa.q = a;
+	bb.q = b;
+	diff.ul[L] = aa.ul[L] - bb.ul[L];
+	diff.ul[H] = aa.ul[H] - bb.ul[H] - (diff.ul[L] > aa.ul[L]);
+	return (diff.q);
+}
diff --git a/lib/libc/quad/ucmpdi2.c b/lib/libc/quad/ucmpdi2.c
new file mode 100644
index 0000000..e5dfc43
--- /dev/null
+++ b/lib/libc/quad/ucmpdi2.c
@@ -0,0 +1,58 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ucmpdi2.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Return 0, 1, or 2 as a <, =, > b respectively.
+ * Neither a nor b are considered signed.
+ */
+int
+__ucmpdi2(a, b)
+	u_quad_t a, b;
+{
+	union uu aa, bb;
+
+	aa.uq = a;
+	bb.uq = b;
+	return (aa.ul[H] < bb.ul[H] ? 0 : aa.ul[H] > bb.ul[H] ? 2 :
+	    aa.ul[L] < bb.ul[L] ? 0 : aa.ul[L] > bb.ul[L] ? 2 : 1);
+}
diff --git a/lib/libc/quad/udivdi3.c b/lib/libc/quad/udivdi3.c
new file mode 100644
index 0000000..8ddd559
--- /dev/null
+++ b/lib/libc/quad/udivdi3.c
@@ -0,0 +1,53 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)udivdi3.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Divide two unsigned quads.
+ */
+u_quad_t
+__udivdi3(a, b)
+	u_quad_t a, b;
+{
+
+	return (__qdivrem(a, b, (u_quad_t *)0));
+}
diff --git a/lib/libc/quad/umoddi3.c b/lib/libc/quad/umoddi3.c
new file mode 100644
index 0000000..2a85f76
--- /dev/null
+++ b/lib/libc/quad/umoddi3.c
@@ -0,0 +1,55 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)umoddi3.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Return remainder after dividing two unsigned quads.
+ */
+u_quad_t
+__umoddi3(a, b)
+	u_quad_t a, b;
+{
+	u_quad_t r;
+
+	(void)__qdivrem(a, b, &r);
+	return (r);
+}
diff --git a/lib/libc/quad/xordi3.c b/lib/libc/quad/xordi3.c
new file mode 100644
index 0000000..e3a8588
--- /dev/null
+++ b/lib/libc/quad/xordi3.c
@@ -0,0 +1,58 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)xordi3.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include "quad.h"
+
+/*
+ * Return a ^ b, in quad.
+ */
+quad_t
+__xordi3(a, b)
+	quad_t a, b;
+{
+	union uu aa, bb;
+
+	aa.q = a;
+	bb.q = b;
+	aa.ul[0] ^= bb.ul[0];
+	aa.ul[1] ^= bb.ul[1];
+	return (aa.q);
+}
diff --git a/lib/libc/regex/COPYRIGHT b/lib/libc/regex/COPYRIGHT
new file mode 100644
index 0000000..574f6bc
--- /dev/null
+++ b/lib/libc/regex/COPYRIGHT
@@ -0,0 +1,56 @@
+Copyright 1992, 1993, 1994 Henry Spencer.  All rights reserved.
+This software is not subject to any license of the American Telephone
+and Telegraph Company or of the Regents of the University of California.
+
+Permission is granted to anyone to use this software for any purpose on
+any computer system, and to alter it and redistribute it, subject
+to the following restrictions:
+
+1. The author is not responsible for the consequences of use of this
+   software, no matter how awful, even if they arise from flaws in it.
+
+2. The origin of this software must not be misrepresented, either by
+   explicit claim or by omission.  Since few users ever read sources,
+   credits must appear in the documentation.
+
+3. Altered versions must be plainly marked as such, and must not be
+   misrepresented as being the original software.  Since few users
+   ever read sources, credits must appear in the documentation.
+
+4. This notice may not be removed or altered.
+
+=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+/*-
+ * Copyright (c) 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)COPYRIGHT	8.1 (Berkeley) 3/16/94
+ */
diff --git a/lib/libc/regex/Makefile.inc b/lib/libc/regex/Makefile.inc
new file mode 100644
index 0000000..48e286e
--- /dev/null
+++ b/lib/libc/regex/Makefile.inc
@@ -0,0 +1,14 @@
+#	@(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+
+# regex sources
+.PATH: ${.CURDIR}/regex
+
+CFLAGS+=-DPOSIX_MISTAKE
+
+SRCS+=	regcomp.c regerror.c regexec.c regfree.c
+
+MAN3+=	regex/regex.3
+MAN7+=	regex/re_format.7
+
+MLINKS+=regex.3 regcomp.3 regex.3 regexec.3 regex.3 regerror.3
+MLINKS+=regexec.3 regfree.3
diff --git a/lib/libc/regex/WHATSNEW b/lib/libc/regex/WHATSNEW
new file mode 100644
index 0000000..f4301d3
--- /dev/null
+++ b/lib/libc/regex/WHATSNEW
@@ -0,0 +1,94 @@
+# @(#)WHATSNEW	8.3 (Berkeley) 3/18/94
+
+New in alpha3.4:  The complex bug alluded to below has been fixed (in a
+slightly kludgey temporary way that may hurt efficiency a bit; this is
+another "get it out the door for 4.4" release).  The tests at the end of
+the tests file have accordingly been uncommented.  The primary sign of
+the bug was that something like a?b matching ab matched b rather than ab.
+(The bug was essentially specific to this exact situation, else it would
+have shown up earlier.)
+
+New in alpha3.3:  The definition of word boundaries has been altered
+slightly, to more closely match the usual programming notion that "_"
+is an alphabetic.  Stuff used for pre-ANSI systems is now in a subdir,
+and the makefile no longer alludes to it in mysterious ways.  The
+makefile has generally been cleaned up some.  Fixes have been made
+(again!) so that the regression test will run without -DREDEBUG, at
+the cost of weaker checking.  A workaround for a bug in some folks'
+<assert.h> has been added.  And some more things have been added to
+tests, including a couple right at the end which are commented out
+because the code currently flunks them (complex bug; fix coming).
+Plus the usual minor cleanup.
+
+New in alpha3.2:  Assorted bits of cleanup and portability improvement
+(the development base is now a BSDI system using GCC instead of an ancient
+Sun system, and the newer compiler exposed some glitches).  Fix for a
+serious bug that affected REs using many [] (including REG_ICASE REs
+because of the way they are implemented), *sometimes*, depending on
+memory-allocation patterns.  The header-file prototypes no longer name
+the parameters, avoiding possible name conflicts.  The possibility that
+some clot has defined CHAR_MIN as (say) `-128' instead of `(-128)' is
+now handled gracefully.  "uchar" is no longer used as an internal type
+name (too many people have the same idea).  Still the same old lousy
+performance, alas.
+
+New in alpha3.1:  Basically nothing, this release is just a bookkeeping
+convenience.  Stay tuned.
+
+New in alpha3.0:  Performance is no better, alas, but some fixes have been
+made and some functionality has been added.  (This is basically the "get
+it out the door in time for 4.4" release.)  One bug fix:  regfree() didn't
+free the main internal structure (how embarrassing).  It is now possible
+to put NULs in either the RE or the target string, using (resp.) a new
+REG_PEND flag and the old REG_STARTEND flag.  The REG_NOSPEC flag to
+regcomp() makes all characters ordinary, so you can match a literal
+string easily (this will become more useful when performance improves!).
+There are now primitives to match beginnings and ends of words, although
+the syntax is disgusting and so is the implementation.  The REG_ATOI
+debugging interface has changed a bit.  And there has been considerable
+internal cleanup of various kinds.
+
+New in alpha2.3:  Split change list out of README, and moved flags notes
+into Makefile.  Macro-ized the name of regex(7) in regex(3), since it has
+to change for 4.4BSD.  Cleanup work in engine.c, and some new regression
+tests to catch tricky cases thereof.
+
+New in alpha2.2:  Out-of-date manpages updated.  Regerror() acquires two
+small extensions -- REG_ITOA and REG_ATOI -- which avoid debugging kludges
+in my own test program and might be useful to others for similar purposes.
+The regression test will now compile (and run) without REDEBUG.  The
+BRE \$ bug is fixed.  Most uses of "uchar" are gone; it's all chars now.
+Char/uchar parameters are now written int/unsigned, to avoid possible
+portability problems with unpromoted parameters.  Some unsigned casts have
+been introduced to minimize portability problems with shifting into sign
+bits.
+
+New in alpha2.1:  Lots of little stuff, cleanup and fixes.  The one big
+thing is that regex.h is now generated, using mkh, rather than being
+supplied in the distribution; due to circularities in dependencies,
+you have to build regex.h explicitly by "make h".  The two known bugs
+have been fixed (and the regression test now checks for them), as has a
+problem with assertions not being suppressed in the absence of REDEBUG.
+No performance work yet.
+
+New in alpha2:  Backslash-anything is an ordinary character, not an
+error (except, of course, for the handful of backslashed metacharacters
+in BREs), which should reduce script breakage.  The regression test
+checks *where* null strings are supposed to match, and has generally
+been tightened up somewhat.  Small bug fixes in parameter passing (not
+harmful, but technically errors) and some other areas.  Debugging
+invoked by defining REDEBUG rather than not defining NDEBUG.
+
+New in alpha+3:  full prototyping for internal routines, using a little
+helper program, mkh, which extracts prototypes given in stylized comments.
+More minor cleanup.  Buglet fix:  it's CHAR_BIT, not CHAR_BITS.  Simple
+pre-screening of input when a literal string is known to be part of the
+RE; this does wonders for performance.
+
+New in alpha+2:  minor bits of cleanup.  Notably, the number "32" for the
+word width isn't hardwired into regexec.c any more, the public header
+file prototypes the functions if __STDC__ is defined, and some small typos
+in the manpages have been fixed.
+
+New in alpha+1:  improvements to the manual pages, and an important
+extension, the REG_STARTEND option to regexec().
diff --git a/lib/libc/regex/cclass.h b/lib/libc/regex/cclass.h
new file mode 100644
index 0000000..a29a92e
--- /dev/null
+++ b/lib/libc/regex/cclass.h
@@ -0,0 +1,70 @@
+/*-
+ * Copyright (c) 1992, 1993, 1994 Henry Spencer.
+ * Copyright (c) 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Henry Spencer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)cclass.h	8.3 (Berkeley) 3/20/94
+ */
+
+/* character-class table */
+static struct cclass {
+	char *name;
+	char *chars;
+	char *multis;
+} cclasses[] = {
+	"alnum",	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\
+0123456789",				"",
+	"alpha",	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz",
+					"",
+	"blank",	" \t",		"",
+	"cntrl",	"\007\b\t\n\v\f\r\1\2\3\4\5\6\16\17\20\21\22\23\24\
+\25\26\27\30\31\32\33\34\35\36\37\177",	"",
+	"digit",	"0123456789",	"",
+	"graph",	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\
+0123456789!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~",
+					"",
+	"lower",	"abcdefghijklmnopqrstuvwxyz",
+					"",
+	"print",	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\
+0123456789!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~ ",
+					"",
+	"punct",	"!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~",
+					"",
+	"space",	"\t\n\v\f\r ",	"",
+	"upper",	"ABCDEFGHIJKLMNOPQRSTUVWXYZ",
+					"",
+	"xdigit",	"0123456789ABCDEFabcdef",
+					"",
+	NULL,		0,		""
+};
diff --git a/lib/libc/regex/cname.h b/lib/libc/regex/cname.h
new file mode 100644
index 0000000..c1632eb
--- /dev/null
+++ b/lib/libc/regex/cname.h
@@ -0,0 +1,141 @@
+/*-
+ * Copyright (c) 1992, 1993, 1994 Henry Spencer.
+ * Copyright (c) 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Henry Spencer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)cname.h	8.3 (Berkeley) 3/20/94
+ */
+
+/* character-name table */
+static struct cname {
+	char *name;
+	char code;
+} cnames[] = {
+	"NUL",	'\0',
+	"SOH",	'\001',
+	"STX",	'\002',
+	"ETX",	'\003',
+	"EOT",	'\004',
+	"ENQ",	'\005',
+	"ACK",	'\006',
+	"BEL",	'\007',
+	"alert",	'\007',
+	"BS",		'\010',
+	"backspace",	'\b',
+	"HT",		'\011',
+	"tab",		'\t',
+	"LF",		'\012',
+	"newline",	'\n',
+	"VT",		'\013',
+	"vertical-tab",	'\v',
+	"FF",		'\014',
+	"form-feed",	'\f',
+	"CR",		'\015',
+	"carriage-return",	'\r',
+	"SO",	'\016',
+	"SI",	'\017',
+	"DLE",	'\020',
+	"DC1",	'\021',
+	"DC2",	'\022',
+	"DC3",	'\023',
+	"DC4",	'\024',
+	"NAK",	'\025',
+	"SYN",	'\026',
+	"ETB",	'\027',
+	"CAN",	'\030',
+	"EM",	'\031',
+	"SUB",	'\032',
+	"ESC",	'\033',
+	"IS4",	'\034',
+	"FS",	'\034',
+	"IS3",	'\035',
+	"GS",	'\035',
+	"IS2",	'\036',
+	"RS",	'\036',
+	"IS1",	'\037',
+	"US",	'\037',
+	"space",		' ',
+	"exclamation-mark",	'!',
+	"quotation-mark",	'"',
+	"number-sign",		'#',
+	"dollar-sign",		'$',
+	"percent-sign",		'%',
+	"ampersand",		'&',
+	"apostrophe",		'\'',
+	"left-parenthesis",	'(',
+	"right-parenthesis",	')',
+	"asterisk",	'*',
+	"plus-sign",	'+',
+	"comma",	',',
+	"hyphen",	'-',
+	"hyphen-minus",	'-',
+	"period",	'.',
+	"full-stop",	'.',
+	"slash",	'/',
+	"solidus",	'/',
+	"zero",		'0',
+	"one",		'1',
+	"two",		'2',
+	"three",	'3',
+	"four",		'4',
+	"five",		'5',
+	"six",		'6',
+	"seven",	'7',
+	"eight",	'8',
+	"nine",		'9',
+	"colon",	':',
+	"semicolon",	';',
+	"less-than-sign",	'<',
+	"equals-sign",		'=',
+	"greater-than-sign",	'>',
+	"question-mark",	'?',
+	"commercial-at",	'@',
+	"left-square-bracket",	'[',
+	"backslash",		'\\',
+	"reverse-solidus",	'\\',
+	"right-square-bracket",	']',
+	"circumflex",		'^',
+	"circumflex-accent",	'^',
+	"underscore",		'_',
+	"low-line",		'_',
+	"grave-accent",		'`',
+	"left-brace",		'{',
+	"left-curly-bracket",	'{',
+	"vertical-line",	'|',
+	"right-brace",		'}',
+	"right-curly-bracket",	'}',
+	"tilde",		'~',
+	"DEL",	'\177',
+	NULL,	0,
+};
diff --git a/lib/libc/regex/engine.c b/lib/libc/regex/engine.c
new file mode 100644
index 0000000..8b54837
--- /dev/null
+++ b/lib/libc/regex/engine.c
@@ -0,0 +1,1092 @@
+/*-
+ * Copyright (c) 1992, 1993, 1994 Henry Spencer.
+ * Copyright (c) 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Henry Spencer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)engine.c	8.5 (Berkeley) 3/20/94
+ */
+
+/*
+ * The matching engine and friends.  This file is #included by regexec.c
+ * after suitable #defines of a variety of macros used herein, so that
+ * different state representations can be used without duplicating masses
+ * of code.
+ */
+
+#ifdef SNAMES
+#define	matcher	smatcher
+#define	fast	sfast
+#define	slow	sslow
+#define	dissect	sdissect
+#define	backref	sbackref
+#define	step	sstep
+#define	print	sprint
+#define	at	sat
+#define	match	smat
+#endif
+#ifdef LNAMES
+#define	matcher	lmatcher
+#define	fast	lfast
+#define	slow	lslow
+#define	dissect	ldissect
+#define	backref	lbackref
+#define	step	lstep
+#define	print	lprint
+#define	at	lat
+#define	match	lmat
+#endif
+
+/* another structure passed up and down to avoid zillions of parameters */
+struct match {
+	struct re_guts *g;
+	int eflags;
+	regmatch_t *pmatch;	/* [nsub+1] (0 element unused) */
+	char *offp;		/* offsets work from here */
+	char *beginp;		/* start of string -- virtual NUL precedes */
+	char *endp;		/* end of string -- virtual NUL here */
+	char *coldp;		/* can be no match starting before here */
+	char **lastpos;		/* [nplus+1] */
+	STATEVARS;
+	states st;		/* current states */
+	states fresh;		/* states for a fresh start */
+	states tmp;		/* temporary */
+	states empty;		/* empty set of states */
+};
+
+/* ========= begin header generated by ./mkh ========= */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* === engine.c === */
+static int matcher __P((struct re_guts *g, char *string, size_t nmatch, regmatch_t pmatch[], int eflags));
+static char *dissect __P((struct match *m, char *start, char *stop, sopno startst, sopno stopst));
+static char *backref __P((struct match *m, char *start, char *stop, sopno startst, sopno stopst, sopno lev));
+static char *fast __P((struct match *m, char *start, char *stop, sopno startst, sopno stopst));
+static char *slow __P((struct match *m, char *start, char *stop, sopno startst, sopno stopst));
+static states step __P((struct re_guts *g, sopno start, sopno stop, states bef, int ch, states aft));
+#define	BOL	(OUT+1)
+#define	EOL	(BOL+1)
+#define	BOLEOL	(BOL+2)
+#define	NOTHING	(BOL+3)
+#define	BOW	(BOL+4)
+#define	EOW	(BOL+5)
+#define	CODEMAX	(BOL+5)		/* highest code used */
+#define	NONCHAR(c)	((c) > CHAR_MAX)
+#define	NNONCHAR	(CODEMAX-CHAR_MAX)
+#ifdef REDEBUG
+static void print __P((struct match *m, char *caption, states st, int ch, FILE *d));
+#endif
+#ifdef REDEBUG
+static void at __P((struct match *m, char *title, char *start, char *stop, sopno startst, sopno stopst));
+#endif
+#ifdef REDEBUG
+static char *pchar __P((int ch));
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+/* ========= end header generated by ./mkh ========= */
+
+#ifdef REDEBUG
+#define	SP(t, s, c)	print(m, t, s, c, stdout)
+#define	AT(t, p1, p2, s1, s2)	at(m, t, p1, p2, s1, s2)
+#define	NOTE(str)	{ if (m->eflags&REG_TRACE) printf("=%s\n", (str)); }
+#else
+#define	SP(t, s, c)	/* nothing */
+#define	AT(t, p1, p2, s1, s2)	/* nothing */
+#define	NOTE(s)	/* nothing */
+#endif
+
+/*
+ - matcher - the actual matching engine
+ == static int matcher(register struct re_guts *g, char *string, \
+ ==	size_t nmatch, regmatch_t pmatch[], int eflags);
+ */
+static int			/* 0 success, REG_NOMATCH failure */
+matcher(g, string, nmatch, pmatch, eflags)
+register struct re_guts *g;
+char *string;
+size_t nmatch;
+regmatch_t pmatch[];
+int eflags;
+{
+	register char *endp;
+	register int i;
+	struct match mv;
+	register struct match *m = &mv;
+	register char *dp;
+	const register sopno gf = g->firststate+1;	/* +1 for OEND */
+	const register sopno gl = g->laststate;
+	char *start;
+	char *stop;
+
+	/* simplify the situation where possible */
+	if (g->cflags&REG_NOSUB)
+		nmatch = 0;
+	if (eflags&REG_STARTEND) {
+		start = string + pmatch[0].rm_so;
+		stop = string + pmatch[0].rm_eo;
+	} else {
+		start = string;
+		stop = start + strlen(start);
+	}
+	if (stop < start)
+		return(REG_INVARG);
+
+	/* prescreening; this does wonders for this rather slow code */
+	if (g->must != NULL) {
+		for (dp = start; dp < stop; dp++)
+			if (*dp == g->must[0] && stop - dp >= g->mlen &&
+				memcmp(dp, g->must, (size_t)g->mlen) == 0)
+				break;
+		if (dp == stop)		/* we didn't find g->must */
+			return(REG_NOMATCH);
+	}
+
+	/* match struct setup */
+	m->g = g;
+	m->eflags = eflags;
+	m->pmatch = NULL;
+	m->lastpos = NULL;
+	m->offp = string;
+	m->beginp = start;
+	m->endp = stop;
+	STATESETUP(m, 4);
+	SETUP(m->st);
+	SETUP(m->fresh);
+	SETUP(m->tmp);
+	SETUP(m->empty);
+	CLEAR(m->empty);
+
+	/* this loop does only one repetition except for backrefs */
+	for (;;) {
+		endp = fast(m, start, stop, gf, gl);
+		if (endp == NULL) {		/* a miss */
+			STATETEARDOWN(m);
+			return(REG_NOMATCH);
+		}
+		if (nmatch == 0 && !g->backrefs)
+			break;		/* no further info needed */
+
+		/* where? */
+		assert(m->coldp != NULL);
+		for (;;) {
+			NOTE("finding start");
+			endp = slow(m, m->coldp, stop, gf, gl);
+			if (endp != NULL)
+				break;
+			assert(m->coldp < m->endp);
+			m->coldp++;
+		}
+		if (nmatch == 1 && !g->backrefs)
+			break;		/* no further info needed */
+
+		/* oh my, he wants the subexpressions... */
+		if (m->pmatch == NULL)
+			m->pmatch = (regmatch_t *)malloc((m->g->nsub + 1) *
+							sizeof(regmatch_t));
+		if (m->pmatch == NULL) {
+			STATETEARDOWN(m);
+			return(REG_ESPACE);
+		}
+		for (i = 1; i <= m->g->nsub; i++)
+			m->pmatch[i].rm_so = m->pmatch[i].rm_eo = -1;
+		if (!g->backrefs && !(m->eflags&REG_BACKR)) {
+			NOTE("dissecting");
+			dp = dissect(m, m->coldp, endp, gf, gl);
+		} else {
+			if (g->nplus > 0 && m->lastpos == NULL)
+				m->lastpos = (char **)malloc((g->nplus+1) *
+							sizeof(char *));
+			if (g->nplus > 0 && m->lastpos == NULL) {
+				free(m->pmatch);
+				STATETEARDOWN(m);
+				return(REG_ESPACE);
+			}
+			NOTE("backref dissect");
+			dp = backref(m, m->coldp, endp, gf, gl, (sopno)0);
+		}
+		if (dp != NULL)
+			break;
+
+		/* uh-oh... we couldn't find a subexpression-level match */
+		assert(g->backrefs);	/* must be back references doing it */
+		assert(g->nplus == 0 || m->lastpos != NULL);
+		for (;;) {
+			if (dp != NULL || endp <= m->coldp)
+				break;		/* defeat */
+			NOTE("backoff");
+			endp = slow(m, m->coldp, endp-1, gf, gl);
+			if (endp == NULL)
+				break;		/* defeat */
+			/* try it on a shorter possibility */
+#ifndef NDEBUG
+			for (i = 1; i <= m->g->nsub; i++) {
+				assert(m->pmatch[i].rm_so == -1);
+				assert(m->pmatch[i].rm_eo == -1);
+			}
+#endif
+			NOTE("backoff dissect");
+			dp = backref(m, m->coldp, endp, gf, gl, (sopno)0);
+		}
+		assert(dp == NULL || dp == endp);
+		if (dp != NULL)		/* found a shorter one */
+			break;
+
+		/* despite initial appearances, there is no match here */
+		NOTE("false alarm");
+		start = m->coldp + 1;	/* recycle starting later */
+		assert(start <= stop);
+	}
+
+	/* fill in the details if requested */
+	if (nmatch > 0) {
+		pmatch[0].rm_so = m->coldp - m->offp;
+		pmatch[0].rm_eo = endp - m->offp;
+	}
+	if (nmatch > 1) {
+		assert(m->pmatch != NULL);
+		for (i = 1; i < nmatch; i++)
+			if (i <= m->g->nsub)
+				pmatch[i] = m->pmatch[i];
+			else {
+				pmatch[i].rm_so = -1;
+				pmatch[i].rm_eo = -1;
+			}
+	}
+
+	if (m->pmatch != NULL)
+		free((char *)m->pmatch);
+	if (m->lastpos != NULL)
+		free((char *)m->lastpos);
+	STATETEARDOWN(m);
+	return(0);
+}
+
+/*
+ - dissect - figure out what matched what, no back references
+ == static char *dissect(register struct match *m, char *start, \
+ ==	char *stop, sopno startst, sopno stopst);
+ */
+static char *			/* == stop (success) always */
+dissect(m, start, stop, startst, stopst)
+register struct match *m;
+char *start;
+char *stop;
+sopno startst;
+sopno stopst;
+{
+	register int i;
+	register sopno ss;	/* start sop of current subRE */
+	register sopno es;	/* end sop of current subRE */
+	register char *sp;	/* start of string matched by it */
+	register char *stp;	/* string matched by it cannot pass here */
+	register char *rest;	/* start of rest of string */
+	register char *tail;	/* string unmatched by rest of RE */
+	register sopno ssub;	/* start sop of subsubRE */
+	register sopno esub;	/* end sop of subsubRE */
+	register char *ssp;	/* start of string matched by subsubRE */
+	register char *sep;	/* end of string matched by subsubRE */
+	register char *oldssp;	/* previous ssp */
+	register char *dp;
+
+	AT("diss", start, stop, startst, stopst);
+	sp = start;
+	for (ss = startst; ss < stopst; ss = es) {
+		/* identify end of subRE */
+		es = ss;
+		switch (OP(m->g->strip[es])) {
+		case OPLUS_:
+		case OQUEST_:
+			es += OPND(m->g->strip[es]);
+			break;
+		case OCH_:
+			while (OP(m->g->strip[es]) != O_CH)
+				es += OPND(m->g->strip[es]);
+			break;
+		}
+		es++;
+
+		/* figure out what it matched */
+		switch (OP(m->g->strip[ss])) {
+		case OEND:
+			assert(nope);
+			break;
+		case OCHAR:
+			sp++;
+			break;
+		case OBOL:
+		case OEOL:
+		case OBOW:
+		case OEOW:
+			break;
+		case OANY:
+		case OANYOF:
+			sp++;
+			break;
+		case OBACK_:
+		case O_BACK:
+			assert(nope);
+			break;
+		/* cases where length of match is hard to find */
+		case OQUEST_:
+			stp = stop;
+			for (;;) {
+				/* how long could this one be? */
+				rest = slow(m, sp, stp, ss, es);
+				assert(rest != NULL);	/* it did match */
+				/* could the rest match the rest? */
+				tail = slow(m, rest, stop, es, stopst);
+				if (tail == stop)
+					break;		/* yes! */
+				/* no -- try a shorter match for this one */
+				stp = rest - 1;
+				assert(stp >= sp);	/* it did work */
+			}
+			ssub = ss + 1;
+			esub = es - 1;
+			/* did innards match? */
+			if (slow(m, sp, rest, ssub, esub) != NULL) {
+				dp = dissect(m, sp, rest, ssub, esub);
+				assert(dp == rest);
+			} else		/* no */
+				assert(sp == rest);
+			sp = rest;
+			break;
+		case OPLUS_:
+			stp = stop;
+			for (;;) {
+				/* how long could this one be? */
+				rest = slow(m, sp, stp, ss, es);
+				assert(rest != NULL);	/* it did match */
+				/* could the rest match the rest? */
+				tail = slow(m, rest, stop, es, stopst);
+				if (tail == stop)
+					break;		/* yes! */
+				/* no -- try a shorter match for this one */
+				stp = rest - 1;
+				assert(stp >= sp);	/* it did work */
+			}
+			ssub = ss + 1;
+			esub = es - 1;
+			ssp = sp;
+			oldssp = ssp;
+			for (;;) {	/* find last match of innards */
+				sep = slow(m, ssp, rest, ssub, esub);
+				if (sep == NULL || sep == ssp)
+					break;	/* failed or matched null */
+				oldssp = ssp;	/* on to next try */
+				ssp = sep;
+			}
+			if (sep == NULL) {
+				/* last successful match */
+				sep = ssp;
+				ssp = oldssp;
+			}
+			assert(sep == rest);	/* must exhaust substring */
+			assert(slow(m, ssp, sep, ssub, esub) == rest);
+			dp = dissect(m, ssp, sep, ssub, esub);
+			assert(dp == sep);
+			sp = rest;
+			break;
+		case OCH_:
+			stp = stop;
+			for (;;) {
+				/* how long could this one be? */
+				rest = slow(m, sp, stp, ss, es);
+				assert(rest != NULL);	/* it did match */
+				/* could the rest match the rest? */
+				tail = slow(m, rest, stop, es, stopst);
+				if (tail == stop)
+					break;		/* yes! */
+				/* no -- try a shorter match for this one */
+				stp = rest - 1;
+				assert(stp >= sp);	/* it did work */
+			}
+			ssub = ss + 1;
+			esub = ss + OPND(m->g->strip[ss]) - 1;
+			assert(OP(m->g->strip[esub]) == OOR1);
+			for (;;) {	/* find first matching branch */
+				if (slow(m, sp, rest, ssub, esub) == rest)
+					break;	/* it matched all of it */
+				/* that one missed, try next one */
+				assert(OP(m->g->strip[esub]) == OOR1);
+				esub++;
+				assert(OP(m->g->strip[esub]) == OOR2);
+				ssub = esub + 1;
+				esub += OPND(m->g->strip[esub]);
+				if (OP(m->g->strip[esub]) == OOR2)
+					esub--;
+				else
+					assert(OP(m->g->strip[esub]) == O_CH);
+			}
+			dp = dissect(m, sp, rest, ssub, esub);
+			assert(dp == rest);
+			sp = rest;
+			break;
+		case O_PLUS:
+		case O_QUEST:
+		case OOR1:
+		case OOR2:
+		case O_CH:
+			assert(nope);
+			break;
+		case OLPAREN:
+			i = OPND(m->g->strip[ss]);
+			assert(0 < i && i <= m->g->nsub);
+			m->pmatch[i].rm_so = sp - m->offp;
+			break;
+		case ORPAREN:
+			i = OPND(m->g->strip[ss]);
+			assert(0 < i && i <= m->g->nsub);
+			m->pmatch[i].rm_eo = sp - m->offp;
+			break;
+		default:		/* uh oh */
+			assert(nope);
+			break;
+		}
+	}
+
+	assert(sp == stop);
+	return(sp);
+}
+
+/*
+ - backref - figure out what matched what, figuring in back references
+ == static char *backref(register struct match *m, char *start, \
+ ==	char *stop, sopno startst, sopno stopst, sopno lev);
+ */
+static char *			/* == stop (success) or NULL (failure) */
+backref(m, start, stop, startst, stopst, lev)
+register struct match *m;
+char *start;
+char *stop;
+sopno startst;
+sopno stopst;
+sopno lev;			/* PLUS nesting level */
+{
+	register int i;
+	register sopno ss;	/* start sop of current subRE */
+	register char *sp;	/* start of string matched by it */
+	register sopno ssub;	/* start sop of subsubRE */
+	register sopno esub;	/* end sop of subsubRE */
+	register char *ssp;	/* start of string matched by subsubRE */
+	register char *dp;
+	register size_t len;
+	register int hard;
+	register sop s;
+	register regoff_t offsave;
+	register cset *cs;
+
+	AT("back", start, stop, startst, stopst);
+	sp = start;
+
+	/* get as far as we can with easy stuff */
+	hard = 0;
+	for (ss = startst; !hard && ss < stopst; ss++)
+		switch (OP(s = m->g->strip[ss])) {
+		case OCHAR:
+			if (sp == stop || *sp++ != (char)OPND(s))
+				return(NULL);
+			break;
+		case OANY:
+			if (sp == stop)
+				return(NULL);
+			sp++;
+			break;
+		case OANYOF:
+			cs = &m->g->sets[OPND(s)];
+			if (sp == stop || !CHIN(cs, *sp++))
+				return(NULL);
+			break;
+		case OBOL:
+			if ( (sp == m->beginp && !(m->eflags&REG_NOTBOL)) ||
+					(sp < m->endp && *(sp-1) == '\n' &&
+						(m->g->cflags&REG_NEWLINE)) )
+				{ /* yes */ }
+			else
+				return(NULL);
+			break;
+		case OEOL:
+			if ( (sp == m->endp && !(m->eflags&REG_NOTEOL)) ||
+					(sp < m->endp && *sp == '\n' &&
+						(m->g->cflags&REG_NEWLINE)) )
+				{ /* yes */ }
+			else
+				return(NULL);
+			break;
+		case OBOW:
+			if (( (sp == m->beginp && !(m->eflags&REG_NOTBOL)) ||
+					(sp < m->endp && *(sp-1) == '\n' &&
+						(m->g->cflags&REG_NEWLINE)) ||
+					(sp > m->beginp &&
+							!ISWORD(*(sp-1))) ) &&
+					(sp < m->endp && ISWORD(*sp)) )
+				{ /* yes */ }
+			else
+				return(NULL);
+			break;
+		case OEOW:
+			if (( (sp == m->endp && !(m->eflags&REG_NOTEOL)) ||
+					(sp < m->endp && *sp == '\n' &&
+						(m->g->cflags&REG_NEWLINE)) ||
+					(sp < m->endp && !ISWORD(*sp)) ) &&
+					(sp > m->beginp && ISWORD(*(sp-1))) )
+				{ /* yes */ }
+			else
+				return(NULL);
+			break;
+		case O_QUEST:
+			break;
+		case OOR1:	/* matches null but needs to skip */
+			ss++;
+			s = m->g->strip[ss];
+			do {
+				assert(OP(s) == OOR2);
+				ss += OPND(s);
+			} while (OP(s = m->g->strip[ss]) != O_CH);
+			/* note that the ss++ gets us past the O_CH */
+			break;
+		default:	/* have to make a choice */
+			hard = 1;
+			break;
+		}
+	if (!hard) {		/* that was it! */
+		if (sp != stop)
+			return(NULL);
+		return(sp);
+	}
+	ss--;			/* adjust for the for's final increment */
+
+	/* the hard stuff */
+	AT("hard", sp, stop, ss, stopst);
+	s = m->g->strip[ss];
+	switch (OP(s)) {
+	case OBACK_:		/* the vilest depths */
+		i = OPND(s);
+		assert(0 < i && i <= m->g->nsub);
+		if (m->pmatch[i].rm_eo == -1)
+			return(NULL);
+		assert(m->pmatch[i].rm_so != -1);
+		len = m->pmatch[i].rm_eo - m->pmatch[i].rm_so;
+		assert(stop - m->beginp >= len);
+		if (sp > stop - len)
+			return(NULL);	/* not enough left to match */
+		ssp = m->offp + m->pmatch[i].rm_so;
+		if (memcmp(sp, ssp, len) != 0)
+			return(NULL);
+		while (m->g->strip[ss] != SOP(O_BACK, i))
+			ss++;
+		return(backref(m, sp+len, stop, ss+1, stopst, lev));
+		break;
+	case OQUEST_:		/* to null or not */
+		dp = backref(m, sp, stop, ss+1, stopst, lev);
+		if (dp != NULL)
+			return(dp);	/* not */
+		return(backref(m, sp, stop, ss+OPND(s)+1, stopst, lev));
+		break;
+	case OPLUS_:
+		assert(m->lastpos != NULL);
+		assert(lev+1 <= m->g->nplus);
+		m->lastpos[lev+1] = sp;
+		return(backref(m, sp, stop, ss+1, stopst, lev+1));
+		break;
+	case O_PLUS:
+		if (sp == m->lastpos[lev])	/* last pass matched null */
+			return(backref(m, sp, stop, ss+1, stopst, lev-1));
+		/* try another pass */
+		m->lastpos[lev] = sp;
+		dp = backref(m, sp, stop, ss-OPND(s)+1, stopst, lev);
+		if (dp == NULL)
+			return(backref(m, sp, stop, ss+1, stopst, lev-1));
+		else
+			return(dp);
+		break;
+	case OCH_:		/* find the right one, if any */
+		ssub = ss + 1;
+		esub = ss + OPND(s) - 1;
+		assert(OP(m->g->strip[esub]) == OOR1);
+		for (;;) {	/* find first matching branch */
+			dp = backref(m, sp, stop, ssub, esub, lev);
+			if (dp != NULL)
+				return(dp);
+			/* that one missed, try next one */
+			if (OP(m->g->strip[esub]) == O_CH)
+				return(NULL);	/* there is none */
+			esub++;
+			assert(OP(m->g->strip[esub]) == OOR2);
+			ssub = esub + 1;
+			esub += OPND(m->g->strip[esub]);
+			if (OP(m->g->strip[esub]) == OOR2)
+				esub--;
+			else
+				assert(OP(m->g->strip[esub]) == O_CH);
+		}
+		break;
+	case OLPAREN:		/* must undo assignment if rest fails */
+		i = OPND(s);
+		assert(0 < i && i <= m->g->nsub);
+		offsave = m->pmatch[i].rm_so;
+		m->pmatch[i].rm_so = sp - m->offp;
+		dp = backref(m, sp, stop, ss+1, stopst, lev);
+		if (dp != NULL)
+			return(dp);
+		m->pmatch[i].rm_so = offsave;
+		return(NULL);
+		break;
+	case ORPAREN:		/* must undo assignment if rest fails */
+		i = OPND(s);
+		assert(0 < i && i <= m->g->nsub);
+		offsave = m->pmatch[i].rm_eo;
+		m->pmatch[i].rm_eo = sp - m->offp;
+		dp = backref(m, sp, stop, ss+1, stopst, lev);
+		if (dp != NULL)
+			return(dp);
+		m->pmatch[i].rm_eo = offsave;
+		return(NULL);
+		break;
+	default:		/* uh oh */
+		assert(nope);
+		break;
+	}
+
+	/* "can't happen" */
+	assert(nope);
+	/* NOTREACHED */
+	return "shut up gcc";
+}
+
+/*
+ - fast - step through the string at top speed
+ == static char *fast(register struct match *m, char *start, \
+ ==	char *stop, sopno startst, sopno stopst);
+ */
+static char *			/* where tentative match ended, or NULL */
+fast(m, start, stop, startst, stopst)
+register struct match *m;
+char *start;
+char *stop;
+sopno startst;
+sopno stopst;
+{
+	register states st = m->st;
+	register states fresh = m->fresh;
+	register states tmp = m->tmp;
+	register char *p = start;
+	register int c = (start == m->beginp) ? OUT : *(start-1);
+	register int lastc;	/* previous c */
+	register int flagch;
+	register int i;
+	register char *coldp;	/* last p after which no match was underway */
+
+	CLEAR(st);
+	SET1(st, startst);
+	st = step(m->g, startst, stopst, st, NOTHING, st);
+	ASSIGN(fresh, st);
+	SP("start", st, *p);
+	coldp = NULL;
+	for (;;) {
+		/* next character */
+		lastc = c;
+		c = (p == m->endp) ? OUT : *p;
+		if (EQ(st, fresh))
+			coldp = p;
+
+		/* is there an EOL and/or BOL between lastc and c? */
+		flagch = '\0';
+		i = 0;
+		if ( (lastc == '\n' && m->g->cflags&REG_NEWLINE) ||
+				(lastc == OUT && !(m->eflags&REG_NOTBOL)) ) {
+			flagch = BOL;
+			i = m->g->nbol;
+		}
+		if ( (c == '\n' && m->g->cflags&REG_NEWLINE) ||
+				(c == OUT && !(m->eflags&REG_NOTEOL)) ) {
+			flagch = (flagch == BOL) ? BOLEOL : EOL;
+			i += m->g->neol;
+		}
+		if (i != 0) {
+			for (; i > 0; i--)
+				st = step(m->g, startst, stopst, st, flagch, st);
+			SP("boleol", st, c);
+		}
+
+		/* how about a word boundary? */
+		if ( (flagch == BOL || (lastc != OUT && !ISWORD(lastc))) &&
+					(c != OUT && ISWORD(c)) ) {
+			flagch = BOW;
+		}
+		if ( (lastc != OUT && ISWORD(lastc)) &&
+				(flagch == EOL || (c != OUT && !ISWORD(c))) ) {
+			flagch = EOW;
+		}
+		if (flagch == BOW || flagch == EOW) {
+			st = step(m->g, startst, stopst, st, flagch, st);
+			SP("boweow", st, c);
+		}
+
+		/* are we done? */
+		if (ISSET(st, stopst) || p == stop)
+			break;		/* NOTE BREAK OUT */
+
+		/* no, we must deal with this character */
+		ASSIGN(tmp, st);
+		ASSIGN(st, fresh);
+		assert(c != OUT);
+		st = step(m->g, startst, stopst, tmp, c, st);
+		SP("aft", st, c);
+		assert(EQ(step(m->g, startst, stopst, st, NOTHING, st), st));
+		p++;
+	}
+
+	assert(coldp != NULL);
+	m->coldp = coldp;
+	if (ISSET(st, stopst))
+		return(p+1);
+	else
+		return(NULL);
+}
+
+/*
+ - slow - step through the string more deliberately
+ == static char *slow(register struct match *m, char *start, \
+ ==	char *stop, sopno startst, sopno stopst);
+ */
+static char *			/* where it ended */
+slow(m, start, stop, startst, stopst)
+register struct match *m;
+char *start;
+char *stop;
+sopno startst;
+sopno stopst;
+{
+	register states st = m->st;
+	register states empty = m->empty;
+	register states tmp = m->tmp;
+	register char *p = start;
+	register int c = (start == m->beginp) ? OUT : *(start-1);
+	register int lastc;	/* previous c */
+	register int flagch;
+	register int i;
+	register char *matchp;	/* last p at which a match ended */
+
+	AT("slow", start, stop, startst, stopst);
+	CLEAR(st);
+	SET1(st, startst);
+	SP("sstart", st, *p);
+	st = step(m->g, startst, stopst, st, NOTHING, st);
+	matchp = NULL;
+	for (;;) {
+		/* next character */
+		lastc = c;
+		c = (p == m->endp) ? OUT : *p;
+
+		/* is there an EOL and/or BOL between lastc and c? */
+		flagch = '\0';
+		i = 0;
+		if ( (lastc == '\n' && m->g->cflags&REG_NEWLINE) ||
+				(lastc == OUT && !(m->eflags&REG_NOTBOL)) ) {
+			flagch = BOL;
+			i = m->g->nbol;
+		}
+		if ( (c == '\n' && m->g->cflags&REG_NEWLINE) ||
+				(c == OUT && !(m->eflags&REG_NOTEOL)) ) {
+			flagch = (flagch == BOL) ? BOLEOL : EOL;
+			i += m->g->neol;
+		}
+		if (i != 0) {
+			for (; i > 0; i--)
+				st = step(m->g, startst, stopst, st, flagch, st);
+			SP("sboleol", st, c);
+		}
+
+		/* how about a word boundary? */
+		if ( (flagch == BOL || (lastc != OUT && !ISWORD(lastc))) &&
+					(c != OUT && ISWORD(c)) ) {
+			flagch = BOW;
+		}
+		if ( (lastc != OUT && ISWORD(lastc)) &&
+				(flagch == EOL || (c != OUT && !ISWORD(c))) ) {
+			flagch = EOW;
+		}
+		if (flagch == BOW || flagch == EOW) {
+			st = step(m->g, startst, stopst, st, flagch, st);
+			SP("sboweow", st, c);
+		}
+
+		/* are we done? */
+		if (ISSET(st, stopst))
+			matchp = p;
+		if (EQ(st, empty) || p == stop)
+			break;		/* NOTE BREAK OUT */
+
+		/* no, we must deal with this character */
+		ASSIGN(tmp, st);
+		ASSIGN(st, empty);
+		assert(c != OUT);
+		st = step(m->g, startst, stopst, tmp, c, st);
+		SP("saft", st, c);
+		assert(EQ(step(m->g, startst, stopst, st, NOTHING, st), st));
+		p++;
+	}
+
+	return(matchp);
+}
+
+
+/*
+ - step - map set of states reachable before char to set reachable after
+ == static states step(register struct re_guts *g, sopno start, sopno stop, \
+ ==	register states bef, int ch, register states aft);
+ == #define	BOL	(OUT+1)
+ == #define	EOL	(BOL+1)
+ == #define	BOLEOL	(BOL+2)
+ == #define	NOTHING	(BOL+3)
+ == #define	BOW	(BOL+4)
+ == #define	EOW	(BOL+5)
+ == #define	CODEMAX	(BOL+5)		// highest code used
+ == #define	NONCHAR(c)	((c) > CHAR_MAX)
+ == #define	NNONCHAR	(CODEMAX-CHAR_MAX)
+ */
+static states
+step(g, start, stop, bef, ch, aft)
+register struct re_guts *g;
+sopno start;			/* start state within strip */
+sopno stop;			/* state after stop state within strip */
+register states bef;		/* states reachable before */
+int ch;				/* character or NONCHAR code */
+register states aft;		/* states already known reachable after */
+{
+	register cset *cs;
+	register sop s;
+	register sopno pc;
+	register onestate here;		/* note, macros know this name */
+	register sopno look;
+	register int i;
+
+	for (pc = start, INIT(here, pc); pc != stop; pc++, INC(here)) {
+		s = g->strip[pc];
+		switch (OP(s)) {
+		case OEND:
+			assert(pc == stop-1);
+			break;
+		case OCHAR:
+			/* only characters can match */
+			assert(!NONCHAR(ch) || ch != (char)OPND(s));
+			if (ch == (char)OPND(s))
+				FWD(aft, bef, 1);
+			break;
+		case OBOL:
+			if (ch == BOL || ch == BOLEOL)
+				FWD(aft, bef, 1);
+			break;
+		case OEOL:
+			if (ch == EOL || ch == BOLEOL)
+				FWD(aft, bef, 1);
+			break;
+		case OBOW:
+			if (ch == BOW)
+				FWD(aft, bef, 1);
+			break;
+		case OEOW:
+			if (ch == EOW)
+				FWD(aft, bef, 1);
+			break;
+		case OANY:
+			if (!NONCHAR(ch))
+				FWD(aft, bef, 1);
+			break;
+		case OANYOF:
+			cs = &g->sets[OPND(s)];
+			if (!NONCHAR(ch) && CHIN(cs, ch))
+				FWD(aft, bef, 1);
+			break;
+		case OBACK_:		/* ignored here */
+		case O_BACK:
+			FWD(aft, aft, 1);
+			break;
+		case OPLUS_:		/* forward, this is just an empty */
+			FWD(aft, aft, 1);
+			break;
+		case O_PLUS:		/* both forward and back */
+			FWD(aft, aft, 1);
+			i = ISSETBACK(aft, OPND(s));
+			BACK(aft, aft, OPND(s));
+			if (!i && ISSETBACK(aft, OPND(s))) {
+				/* oho, must reconsider loop body */
+				pc -= OPND(s) + 1;
+				INIT(here, pc);
+			}
+			break;
+		case OQUEST_:		/* two branches, both forward */
+			FWD(aft, aft, 1);
+			FWD(aft, aft, OPND(s));
+			break;
+		case O_QUEST:		/* just an empty */
+			FWD(aft, aft, 1);
+			break;
+		case OLPAREN:		/* not significant here */
+		case ORPAREN:
+			FWD(aft, aft, 1);
+			break;
+		case OCH_:		/* mark the first two branches */
+			FWD(aft, aft, 1);
+			assert(OP(g->strip[pc+OPND(s)]) == OOR2);
+			FWD(aft, aft, OPND(s));
+			break;
+		case OOR1:		/* done a branch, find the O_CH */
+			if (ISSTATEIN(aft, here)) {
+				for (look = 1;
+						OP(s = g->strip[pc+look]) != O_CH;
+						look += OPND(s))
+					assert(OP(s) == OOR2);
+				FWD(aft, aft, look);
+			}
+			break;
+		case OOR2:		/* propagate OCH_'s marking */
+			FWD(aft, aft, 1);
+			if (OP(g->strip[pc+OPND(s)]) != O_CH) {
+				assert(OP(g->strip[pc+OPND(s)]) == OOR2);
+				FWD(aft, aft, OPND(s));
+			}
+			break;
+		case O_CH:		/* just empty */
+			FWD(aft, aft, 1);
+			break;
+		default:		/* ooooops... */
+			assert(nope);
+			break;
+		}
+	}
+
+	return(aft);
+}
+
+#ifdef REDEBUG
+/*
+ - print - print a set of states
+ == #ifdef REDEBUG
+ == static void print(struct match *m, char *caption, states st, \
+ ==	int ch, FILE *d);
+ == #endif
+ */
+static void
+print(m, caption, st, ch, d)
+struct match *m;
+char *caption;
+states st;
+int ch;
+FILE *d;
+{
+	register struct re_guts *g = m->g;
+	register int i;
+	register int first = 1;
+
+	if (!(m->eflags&REG_TRACE))
+		return;
+
+	fprintf(d, "%s", caption);
+	if (ch != '\0')
+		fprintf(d, " %s", pchar(ch));
+	for (i = 0; i < g->nstates; i++)
+		if (ISSET(st, i)) {
+			fprintf(d, "%s%d", (first) ? "\t" : ", ", i);
+			first = 0;
+		}
+	fprintf(d, "\n");
+}
+
+/*
+ - at - print current situation
+ == #ifdef REDEBUG
+ == static void at(struct match *m, char *title, char *start, char *stop, \
+ ==						sopno startst, sopno stopst);
+ == #endif
+ */
+static void
+at(m, title, start, stop, startst, stopst)
+struct match *m;
+char *title;
+char *start;
+char *stop;
+sopno startst;
+sopno stopst;
+{
+	if (!(m->eflags&REG_TRACE))
+		return;
+
+	printf("%s %s-", title, pchar(*start));
+	printf("%s ", pchar(*stop));
+	printf("%ld-%ld\n", (long)startst, (long)stopst);
+}
+
+#ifndef PCHARDONE
+#define	PCHARDONE	/* never again */
+/*
+ - pchar - make a character printable
+ == #ifdef REDEBUG
+ == static char *pchar(int ch);
+ == #endif
+ *
+ * Is this identical to regchar() over in debug.c?  Well, yes.  But a
+ * duplicate here avoids having a debugging-capable regexec.o tied to
+ * a matching debug.o, and this is convenient.  It all disappears in
+ * the non-debug compilation anyway, so it doesn't matter much.
+ */
+static char *			/* -> representation */
+pchar(ch)
+int ch;
+{
+	static char pbuf[10];
+
+	if (isprint(ch) || ch == ' ')
+		sprintf(pbuf, "%c", ch);
+	else
+		sprintf(pbuf, "\\%o", ch);
+	return(pbuf);
+}
+#endif
+#endif
+
+#undef	matcher
+#undef	fast
+#undef	slow
+#undef	dissect
+#undef	backref
+#undef	step
+#undef	print
+#undef	at
+#undef	match
diff --git a/lib/libc/regex/re_format.7 b/lib/libc/regex/re_format.7
new file mode 100644
index 0000000..db2f634
--- /dev/null
+++ b/lib/libc/regex/re_format.7
@@ -0,0 +1,269 @@
+.\" Copyright (c) 1992, 1993, 1994 Henry Spencer.
+.\" Copyright (c) 1992, 1993, 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Henry Spencer.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)re_format.7	8.3 (Berkeley) 3/20/94
+.\"
+.TH RE_FORMAT 7 "March 20, 1994"
+.SH NAME
+re_format \- POSIX 1003.2 regular expressions
+.SH DESCRIPTION
+Regular expressions (``RE''s),
+as defined in POSIX 1003.2, come in two forms:
+modern REs (roughly those of
+.IR egrep ;
+1003.2 calls these ``extended'' REs)
+and obsolete REs (roughly those of
+.IR ed ;
+1003.2 ``basic'' REs).
+Obsolete REs mostly exist for backward compatibility in some old programs;
+they will be discussed at the end.
+1003.2 leaves some aspects of RE syntax and semantics open;
+`\(dg' marks decisions on these aspects that
+may not be fully portable to other 1003.2 implementations.
+.PP
+A (modern) RE is one\(dg or more non-empty\(dg \fIbranches\fR,
+separated by `|'.
+It matches anything that matches one of the branches.
+.PP
+A branch is one\(dg or more \fIpieces\fR, concatenated.
+It matches a match for the first, followed by a match for the second, etc.
+.PP
+A piece is an \fIatom\fR possibly followed
+by a single\(dg `*', `+', `?', or \fIbound\fR.
+An atom followed by `*' matches a sequence of 0 or more matches of the atom.
+An atom followed by `+' matches a sequence of 1 or more matches of the atom.
+An atom followed by `?' matches a sequence of 0 or 1 matches of the atom.
+.PP
+A \fIbound\fR is `{' followed by an unsigned decimal integer,
+possibly followed by `,'
+possibly followed by another unsigned decimal integer,
+always followed by `}'.
+The integers must lie between 0 and RE_DUP_MAX (255\(dg) inclusive,
+and if there are two of them, the first may not exceed the second.
+An atom followed by a bound containing one integer \fIi\fR
+and no comma matches
+a sequence of exactly \fIi\fR matches of the atom.
+An atom followed by a bound
+containing one integer \fIi\fR and a comma matches
+a sequence of \fIi\fR or more matches of the atom.
+An atom followed by a bound
+containing two integers \fIi\fR and \fIj\fR matches
+a sequence of \fIi\fR through \fIj\fR (inclusive) matches of the atom.
+.PP
+An atom is a regular expression enclosed in `()' (matching a match for the
+regular expression),
+an empty set of `()' (matching the null string)\(dg,
+a \fIbracket expression\fR (see below), `.'
+(matching any single character), `^' (matching the null string at the
+beginning of a line), `$' (matching the null string at the
+end of a line), a `\e' followed by one of the characters
+`^.[$()|*+?{\e'
+(matching that character taken as an ordinary character),
+a `\e' followed by any other character\(dg
+(matching that character taken as an ordinary character,
+as if the `\e' had not been present\(dg),
+or a single character with no other significance (matching that character).
+A `{' followed by a character other than a digit is an ordinary
+character, not the beginning of a bound\(dg.
+It is illegal to end an RE with `\e'.
+.PP
+A \fIbracket expression\fR is a list of characters enclosed in `[]'.
+It normally matches any single character from the list (but see below).
+If the list begins with `^',
+it matches any single character
+(but see below) \fInot\fR from the rest of the list.
+If two characters in the list are separated by `\-', this is shorthand
+for the full \fIrange\fR of characters between those two (inclusive) in the
+collating sequence,
+e.g. `[0-9]' in ASCII matches any decimal digit.
+It is illegal\(dg for two ranges to share an
+endpoint, e.g. `a-c-e'.
+Ranges are very collating-sequence-dependent,
+and portable programs should avoid relying on them.
+.PP
+To include a literal `]' in the list, make it the first character
+(following a possible `^').
+To include a literal `\-', make it the first or last character,
+or the second endpoint of a range.
+To use a literal `\-' as the first endpoint of a range,
+enclose it in `[.' and `.]' to make it a collating element (see below).
+With the exception of these and some combinations using `[' (see next
+paragraphs), all other special characters, including `\e', lose their
+special significance within a bracket expression.
+.PP
+Within a bracket expression, a collating element (a character,
+a multi-character sequence that collates as if it were a single character,
+or a collating-sequence name for either)
+enclosed in `[.' and `.]' stands for the
+sequence of characters of that collating element.
+The sequence is a single element of the bracket expression's list.
+A bracket expression containing a multi-character collating element 
+can thus match more than one character,
+e.g. if the collating sequence includes a `ch' collating element,
+then the RE `[[.ch.]]*c' matches the first five characters
+of `chchcc'.
+.PP
+Within a bracket expression, a collating element enclosed in `[=' and
+`=]' is an equivalence class, standing for the sequences of characters
+of all collating elements equivalent to that one, including itself.
+(If there are no other equivalent collating elements,
+the treatment is as if the enclosing delimiters were `[.' and `.]'.)
+For example, if o and \o'o^' are the members of an equivalence class,
+then `[[=o=]]', `[[=\o'o^'=]]', and `[o\o'o^']' are all synonymous.
+An equivalence class may not\(dg be an endpoint
+of a range.
+.PP
+Within a bracket expression, the name of a \fIcharacter class\fR enclosed
+in `[:' and `:]' stands for the list of all characters belonging to that
+class.
+Standard character class names are:
+.PP
+.RS
+.nf
+.ta 3c 6c 9c
+alnum	digit	punct
+alpha	graph	space
+blank	lower	upper
+cntrl	print	xdigit
+.fi
+.RE
+.PP
+These stand for the character classes defined in
+.IR ctype (3).
+A locale may provide others.
+A character class may not be used as an endpoint of a range.
+.PP
+There are two special cases\(dg of bracket expressions:
+the bracket expressions `[[:<:]]' and `[[:>:]]' match the null string at
+the beginning and end of a word respectively.
+A word is defined as a sequence of
+word characters
+which is neither preceded nor followed by
+word characters.
+A word character is an
+.I alnum
+character (as defined by
+.IR ctype (3))
+or an underscore.
+This is an extension,
+compatible with but not specified by POSIX 1003.2,
+and should be used with
+caution in software intended to be portable to other systems.
+.PP
+In the event that an RE could match more than one substring of a given
+string,
+the RE matches the one starting earliest in the string.
+If the RE could match more than one substring starting at that point,
+it matches the longest.
+Subexpressions also match the longest possible substrings, subject to
+the constraint that the whole match be as long as possible,
+with subexpressions starting earlier in the RE taking priority over
+ones starting later.
+Note that higher-level subexpressions thus take priority over
+their lower-level component subexpressions.
+.PP
+Match lengths are measured in characters, not collating elements.
+A null string is considered longer than no match at all.
+For example,
+`bb*' matches the three middle characters of `abbbc',
+`(wee|week)(knights|nights)' matches all ten characters of `weeknights',
+when `(.*).*' is matched against `abc' the parenthesized subexpression
+matches all three characters, and
+when `(a*)*' is matched against `bc' both the whole RE and the parenthesized
+subexpression match the null string.
+.PP
+If case-independent matching is specified,
+the effect is much as if all case distinctions had vanished from the
+alphabet.
+When an alphabetic that exists in multiple cases appears as an
+ordinary character outside a bracket expression, it is effectively
+transformed into a bracket expression containing both cases,
+e.g. `x' becomes `[xX]'.
+When it appears inside a bracket expression, all case counterparts
+of it are added to the bracket expression, so that (e.g.) `[x]'
+becomes `[xX]' and `[^x]' becomes `[^xX]'.
+.PP
+No particular limit is imposed on the length of REs\(dg.
+Programs intended to be portable should not employ REs longer
+than 256 bytes,
+as an implementation can refuse to accept such REs and remain
+POSIX-compliant.
+.PP
+Obsolete (``basic'') regular expressions differ in several respects.
+`|', `+', and `?' are ordinary characters and there is no equivalent
+for their functionality.
+The delimiters for bounds are `\e{' and `\e}',
+with `{' and `}' by themselves ordinary characters.
+The parentheses for nested subexpressions are `\e(' and `\e)',
+with `(' and `)' by themselves ordinary characters.
+`^' is an ordinary character except at the beginning of the
+RE or\(dg the beginning of a parenthesized subexpression,
+`$' is an ordinary character except at the end of the
+RE or\(dg the end of a parenthesized subexpression,
+and `*' is an ordinary character if it appears at the beginning of the
+RE or the beginning of a parenthesized subexpression
+(after a possible leading `^').
+Finally, there is one new type of atom, a \fIback reference\fR:
+`\e' followed by a non-zero decimal digit \fId\fR
+matches the same sequence of characters
+matched by the \fId\fRth parenthesized subexpression
+(numbering subexpressions by the positions of their opening parentheses,
+left to right),
+so that (e.g.) `\e([bc]\e)\e1' matches `bb' or `cc' but not `bc'.
+.SH SEE ALSO
+regex(3)
+.PP
+POSIX 1003.2, section 2.8 (Regular Expression Notation).
+.SH BUGS
+Having two kinds of REs is a botch.
+.PP
+The current 1003.2 spec says that `)' is an ordinary character in
+the absence of an unmatched `(';
+this was an unintentional result of a wording error,
+and change is likely.
+Avoid relying on it.
+.PP
+Back references are a dreadful botch,
+posing major problems for efficient implementations.
+They are also somewhat vaguely defined
+(does
+`a\e(\e(b\e)*\e2\e)*d' match `abbbd'?).
+Avoid using them.
+.PP
+1003.2's specification of case-independent matching is vague.
+The ``one case implies all cases'' definition given above
+is current consensus among implementors as to the right interpretation.
+.PP
+The syntax for word boundaries is incredibly ugly.
diff --git a/lib/libc/regex/regcomp.c b/lib/libc/regex/regcomp.c
new file mode 100644
index 0000000..74c8d19
--- /dev/null
+++ b/lib/libc/regex/regcomp.c
@@ -0,0 +1,1696 @@
+/*-
+ * Copyright (c) 1992, 1993, 1994 Henry Spencer.
+ * Copyright (c) 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Henry Spencer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)regcomp.c	8.5 (Berkeley) 3/20/94
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)regcomp.c	8.5 (Berkeley) 3/20/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <regex.h>
+
+#include "utils.h"
+#include "regex2.h"
+
+#include "cclass.h"
+#include "cname.h"
+
+/*
+ * parse structure, passed up and down to avoid global variables and
+ * other clumsinesses
+ */
+struct parse {
+	char *next;		/* next character in RE */
+	char *end;		/* end of string (-> NUL normally) */
+	int error;		/* has an error been seen? */
+	sop *strip;		/* malloced strip */
+	sopno ssize;		/* malloced strip size (allocated) */
+	sopno slen;		/* malloced strip length (used) */
+	int ncsalloc;		/* number of csets allocated */
+	struct re_guts *g;
+#	define	NPAREN	10	/* we need to remember () 1-9 for back refs */
+	sopno pbegin[NPAREN];	/* -> ( ([0] unused) */
+	sopno pend[NPAREN];	/* -> ) ([0] unused) */
+};
+
+/* ========= begin header generated by ./mkh ========= */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* === regcomp.c === */
+static void p_ere __P((struct parse *p, int stop));
+static void p_ere_exp __P((struct parse *p));
+static void p_str __P((struct parse *p));
+static void p_bre __P((struct parse *p, int end1, int end2));
+static int p_simp_re __P((struct parse *p, int starordinary));
+static int p_count __P((struct parse *p));
+static void p_bracket __P((struct parse *p));
+static void p_b_term __P((struct parse *p, cset *cs));
+static void p_b_cclass __P((struct parse *p, cset *cs));
+static void p_b_eclass __P((struct parse *p, cset *cs));
+static char p_b_symbol __P((struct parse *p));
+static char p_b_coll_elem __P((struct parse *p, int endc));
+static char othercase __P((int ch));
+static void bothcases __P((struct parse *p, int ch));
+static void ordinary __P((struct parse *p, int ch));
+static void nonnewline __P((struct parse *p));
+static void repeat __P((struct parse *p, sopno start, int from, int to));
+static int seterr __P((struct parse *p, int e));
+static cset *allocset __P((struct parse *p));
+static void freeset __P((struct parse *p, cset *cs));
+static int freezeset __P((struct parse *p, cset *cs));
+static int firstch __P((struct parse *p, cset *cs));
+static int nch __P((struct parse *p, cset *cs));
+static void mcadd __P((struct parse *p, cset *cs, char *cp));
+static void mcsub __P((cset *cs, char *cp));
+static int mcin __P((cset *cs, char *cp));
+static char *mcfind __P((cset *cs, char *cp));
+static void mcinvert __P((struct parse *p, cset *cs));
+static void mccase __P((struct parse *p, cset *cs));
+static int isinsets __P((struct re_guts *g, int c));
+static int samesets __P((struct re_guts *g, int c1, int c2));
+static void categorize __P((struct parse *p, struct re_guts *g));
+static sopno dupl __P((struct parse *p, sopno start, sopno finish));
+static void doemit __P((struct parse *p, sop op, size_t opnd));
+static void doinsert __P((struct parse *p, sop op, size_t opnd, sopno pos));
+static void dofwd __P((struct parse *p, sopno pos, sop value));
+static void enlarge __P((struct parse *p, sopno size));
+static void stripsnug __P((struct parse *p, struct re_guts *g));
+static void findmust __P((struct parse *p, struct re_guts *g));
+static sopno pluscount __P((struct parse *p, struct re_guts *g));
+
+#ifdef __cplusplus
+}
+#endif
+/* ========= end header generated by ./mkh ========= */
+
+static char nuls[10];		/* place to point scanner in event of error */
+
+/*
+ * macros for use with parse structure
+ * BEWARE:  these know that the parse structure is named `p' !!!
+ */
+#define	PEEK()	(*p->next)
+#define	PEEK2()	(*(p->next+1))
+#define	MORE()	(p->next < p->end)
+#define	MORE2()	(p->next+1 < p->end)
+#define	SEE(c)	(MORE() && PEEK() == (c))
+#define	SEETWO(a, b)	(MORE() && MORE2() && PEEK() == (a) && PEEK2() == (b))
+#define	EAT(c)	((SEE(c)) ? (NEXT(), 1) : 0)
+#define	EATTWO(a, b)	((SEETWO(a, b)) ? (NEXT2(), 1) : 0)
+#define	NEXT()	(p->next++)
+#define	NEXT2()	(p->next += 2)
+#define	NEXTn(n)	(p->next += (n))
+#define	GETNEXT()	(*p->next++)
+#define	SETERROR(e)	seterr(p, (e))
+#define	REQUIRE(co, e)	((co) || SETERROR(e))
+#define	MUSTSEE(c, e)	(REQUIRE(MORE() && PEEK() == (c), e))
+#define	MUSTEAT(c, e)	(REQUIRE(MORE() && GETNEXT() == (c), e))
+#define	MUSTNOTSEE(c, e)	(REQUIRE(!MORE() || PEEK() != (c), e))
+#define	EMIT(op, sopnd)	doemit(p, (sop)(op), (size_t)(sopnd))
+#define	INSERT(op, pos)	doinsert(p, (sop)(op), HERE()-(pos)+1, pos)
+#define	AHEAD(pos)		dofwd(p, pos, HERE()-(pos))
+#define	ASTERN(sop, pos)	EMIT(sop, HERE()-pos)
+#define	HERE()		(p->slen)
+#define	THERE()		(p->slen - 1)
+#define	THERETHERE()	(p->slen - 2)
+#define	DROP(n)	(p->slen -= (n))
+
+#ifndef NDEBUG
+static int never = 0;		/* for use in asserts; shuts lint up */
+#else
+#define	never	0		/* some <assert.h>s have bugs too */
+#endif
+
+/*
+ - regcomp - interface for parser and compilation
+ = extern int regcomp(regex_t *, const char *, int);
+ = #define	REG_BASIC	0000
+ = #define	REG_EXTENDED	0001
+ = #define	REG_ICASE	0002
+ = #define	REG_NOSUB	0004
+ = #define	REG_NEWLINE	0010
+ = #define	REG_NOSPEC	0020
+ = #define	REG_PEND	0040
+ = #define	REG_DUMP	0200
+ */
+int				/* 0 success, otherwise REG_something */
+regcomp(preg, pattern, cflags)
+regex_t *preg;
+const char *pattern;
+int cflags;
+{
+	struct parse pa;
+	register struct re_guts *g;
+	register struct parse *p = &pa;
+	register int i;
+	register size_t len;
+#ifdef REDEBUG
+#	define	GOODFLAGS(f)	(f)
+#else
+#	define	GOODFLAGS(f)	((f)&~REG_DUMP)
+#endif
+
+	cflags = GOODFLAGS(cflags);
+	if ((cflags&REG_EXTENDED) && (cflags&REG_NOSPEC))
+		return(REG_INVARG);
+
+	if (cflags&REG_PEND) {
+		if (preg->re_endp < pattern)
+			return(REG_INVARG);
+		len = preg->re_endp - pattern;
+	} else
+		len = strlen((char *)pattern);
+
+	/* do the mallocs early so failure handling is easy */
+	g = (struct re_guts *)malloc(sizeof(struct re_guts) +
+							(NC-1)*sizeof(cat_t));
+	if (g == NULL)
+		return(REG_ESPACE);
+	p->ssize = len/(size_t)2*(size_t)3 + (size_t)1;	/* ugh */
+	p->strip = (sop *)malloc(p->ssize * sizeof(sop));
+	p->slen = 0;
+	if (p->strip == NULL) {
+		free((char *)g);
+		return(REG_ESPACE);
+	}
+
+	/* set things up */
+	p->g = g;
+	p->next = (char *)pattern;	/* convenience; we do not modify it */
+	p->end = p->next + len;
+	p->error = 0;
+	p->ncsalloc = 0;
+	for (i = 0; i < NPAREN; i++) {
+		p->pbegin[i] = 0;
+		p->pend[i] = 0;
+	}
+	g->csetsize = NC;
+	g->sets = NULL;
+	g->setbits = NULL;
+	g->ncsets = 0;
+	g->cflags = cflags;
+	g->iflags = 0;
+	g->nbol = 0;
+	g->neol = 0;
+	g->must = NULL;
+	g->mlen = 0;
+	g->nsub = 0;
+	g->ncategories = 1;	/* category 0 is "everything else" */
+	g->categories = &g->catspace[-(CHAR_MIN)];
+	(void) memset((char *)g->catspace, 0, NC*sizeof(cat_t));
+	g->backrefs = 0;
+
+	/* do it */
+	EMIT(OEND, 0);
+	g->firststate = THERE();
+	if (cflags&REG_EXTENDED)
+		p_ere(p, OUT);
+	else if (cflags&REG_NOSPEC)
+		p_str(p);
+	else
+		p_bre(p, OUT, OUT);
+	EMIT(OEND, 0);
+	g->laststate = THERE();
+
+	/* tidy up loose ends and fill things in */
+	categorize(p, g);
+	stripsnug(p, g);
+	findmust(p, g);
+	g->nplus = pluscount(p, g);
+	g->magic = MAGIC2;
+	preg->re_nsub = g->nsub;
+	preg->re_g = g;
+	preg->re_magic = MAGIC1;
+#ifndef REDEBUG
+	/* not debugging, so can't rely on the assert() in regexec() */
+	if (g->iflags&BAD)
+		SETERROR(REG_ASSERT);
+#endif
+
+	/* win or lose, we're done */
+	if (p->error != 0)	/* lose */
+		regfree(preg);
+	return(p->error);
+}
+
+/*
+ - p_ere - ERE parser top level, concatenation and alternation
+ == static void p_ere(register struct parse *p, int stop);
+ */
+static void
+p_ere(p, stop)
+register struct parse *p;
+int stop;			/* character this ERE should end at */
+{
+	register char c;
+	register sopno prevback;
+	register sopno prevfwd;
+	register sopno conc;
+	register int first = 1;		/* is this the first alternative? */
+
+	for (;;) {
+		/* do a bunch of concatenated expressions */
+		conc = HERE();
+		while (MORE() && (c = PEEK()) != '|' && c != stop)
+			p_ere_exp(p);
+		REQUIRE(HERE() != conc, REG_EMPTY);	/* require nonempty */
+
+		if (!EAT('|'))
+			break;		/* NOTE BREAK OUT */
+
+		if (first) {
+			INSERT(OCH_, conc);	/* offset is wrong */
+			prevfwd = conc;
+			prevback = conc;
+			first = 0;
+		}
+		ASTERN(OOR1, prevback);
+		prevback = THERE();
+		AHEAD(prevfwd);			/* fix previous offset */
+		prevfwd = HERE();
+		EMIT(OOR2, 0);			/* offset is very wrong */
+	}
+
+	if (!first) {		/* tail-end fixups */
+		AHEAD(prevfwd);
+		ASTERN(O_CH, prevback);
+	}
+
+	assert(!MORE() || SEE(stop));
+}
+
+/*
+ - p_ere_exp - parse one subERE, an atom possibly followed by a repetition op
+ == static void p_ere_exp(register struct parse *p);
+ */
+static void
+p_ere_exp(p)
+register struct parse *p;
+{
+	register char c;
+	register sopno pos;
+	register int count;
+	register int count2;
+	register sopno subno;
+	int wascaret = 0;
+
+	assert(MORE());		/* caller should have ensured this */
+	c = GETNEXT();
+
+	pos = HERE();
+	switch (c) {
+	case '(':
+		REQUIRE(MORE(), REG_EPAREN);
+		p->g->nsub++;
+		subno = p->g->nsub;
+		if (subno < NPAREN)
+			p->pbegin[subno] = HERE();
+		EMIT(OLPAREN, subno);
+		if (!SEE(')'))
+			p_ere(p, ')');
+		if (subno < NPAREN) {
+			p->pend[subno] = HERE();
+			assert(p->pend[subno] != 0);
+		}
+		EMIT(ORPAREN, subno);
+		MUSTEAT(')', REG_EPAREN);
+		break;
+#ifndef POSIX_MISTAKE
+	case ')':		/* happens only if no current unmatched ( */
+		/*
+		 * You may ask, why the ifndef?  Because I didn't notice
+		 * this until slightly too late for 1003.2, and none of the
+		 * other 1003.2 regular-expression reviewers noticed it at
+		 * all.  So an unmatched ) is legal POSIX, at least until
+		 * we can get it fixed.
+		 */
+		SETERROR(REG_EPAREN);
+		break;
+#endif
+	case '^':
+		EMIT(OBOL, 0);
+		p->g->iflags |= USEBOL;
+		p->g->nbol++;
+		wascaret = 1;
+		break;
+	case '$':
+		EMIT(OEOL, 0);
+		p->g->iflags |= USEEOL;
+		p->g->neol++;
+		break;
+	case '|':
+		SETERROR(REG_EMPTY);
+		break;
+	case '*':
+	case '+':
+	case '?':
+		SETERROR(REG_BADRPT);
+		break;
+	case '.':
+		if (p->g->cflags&REG_NEWLINE)
+			nonnewline(p);
+		else
+			EMIT(OANY, 0);
+		break;
+	case '[':
+		p_bracket(p);
+		break;
+	case '\\':
+		REQUIRE(MORE(), REG_EESCAPE);
+		c = GETNEXT();
+		ordinary(p, c);
+		break;
+	case '{':		/* okay as ordinary except if digit follows */
+		REQUIRE(!MORE() || !isdigit(PEEK()), REG_BADRPT);
+		/* FALLTHROUGH */
+	default:
+		ordinary(p, c);
+		break;
+	}
+
+	if (!MORE())
+		return;
+	c = PEEK();
+	/* we call { a repetition if followed by a digit */
+	if (!( c == '*' || c == '+' || c == '?' ||
+				(c == '{' && MORE2() && isdigit(PEEK2())) ))
+		return;		/* no repetition, we're done */
+	NEXT();
+
+	REQUIRE(!wascaret, REG_BADRPT);
+	switch (c) {
+	case '*':	/* implemented as +? */
+		/* this case does not require the (y|) trick, noKLUDGE */
+		INSERT(OPLUS_, pos);
+		ASTERN(O_PLUS, pos);
+		INSERT(OQUEST_, pos);
+		ASTERN(O_QUEST, pos);
+		break;
+	case '+':
+		INSERT(OPLUS_, pos);
+		ASTERN(O_PLUS, pos);
+		break;
+	case '?':
+		/* KLUDGE: emit y? as (y|) until subtle bug gets fixed */
+		INSERT(OCH_, pos);		/* offset slightly wrong */
+		ASTERN(OOR1, pos);		/* this one's right */
+		AHEAD(pos);			/* fix the OCH_ */
+		EMIT(OOR2, 0);			/* offset very wrong... */
+		AHEAD(THERE());			/* ...so fix it */
+		ASTERN(O_CH, THERETHERE());
+		break;
+	case '{':
+		count = p_count(p);
+		if (EAT(',')) {
+			if (isdigit(PEEK())) {
+				count2 = p_count(p);
+				REQUIRE(count <= count2, REG_BADBR);
+			} else		/* single number with comma */
+				count2 = INFINITY;
+		} else		/* just a single number */
+			count2 = count;
+		repeat(p, pos, count, count2);
+		if (!EAT('}')) {	/* error heuristics */
+			while (MORE() && PEEK() != '}')
+				NEXT();
+			REQUIRE(MORE(), REG_EBRACE);
+			SETERROR(REG_BADBR);
+		}
+		break;
+	}
+
+	if (!MORE())
+		return;
+	c = PEEK();
+	if (!( c == '*' || c == '+' || c == '?' ||
+				(c == '{' && MORE2() && isdigit(PEEK2())) ) )
+		return;
+	SETERROR(REG_BADRPT);
+}
+
+/*
+ - p_str - string (no metacharacters) "parser"
+ == static void p_str(register struct parse *p);
+ */
+static void
+p_str(p)
+register struct parse *p;
+{
+	REQUIRE(MORE(), REG_EMPTY);
+	while (MORE())
+		ordinary(p, GETNEXT());
+}
+
+/*
+ - p_bre - BRE parser top level, anchoring and concatenation
+ == static void p_bre(register struct parse *p, register int end1, \
+ ==	register int end2);
+ * Giving end1 as OUT essentially eliminates the end1/end2 check.
+ *
+ * This implementation is a bit of a kludge, in that a trailing $ is first
+ * taken as an ordinary character and then revised to be an anchor.  The
+ * only undesirable side effect is that '$' gets included as a character
+ * category in such cases.  This is fairly harmless; not worth fixing.
+ * The amount of lookahead needed to avoid this kludge is excessive.
+ */
+static void
+p_bre(p, end1, end2)
+register struct parse *p;
+register int end1;		/* first terminating character */
+register int end2;		/* second terminating character */
+{
+	register sopno start = HERE();
+	register int first = 1;			/* first subexpression? */
+	register int wasdollar = 0;
+
+	if (EAT('^')) {
+		EMIT(OBOL, 0);
+		p->g->iflags |= USEBOL;
+		p->g->nbol++;
+	}
+	while (MORE() && !SEETWO(end1, end2)) {
+		wasdollar = p_simp_re(p, first);
+		first = 0;
+	}
+	if (wasdollar) {	/* oops, that was a trailing anchor */
+		DROP(1);
+		EMIT(OEOL, 0);
+		p->g->iflags |= USEEOL;
+		p->g->neol++;
+	}
+
+	REQUIRE(HERE() != start, REG_EMPTY);	/* require nonempty */
+}
+
+/*
+ - p_simp_re - parse a simple RE, an atom possibly followed by a repetition
+ == static int p_simp_re(register struct parse *p, int starordinary);
+ */
+static int			/* was the simple RE an unbackslashed $? */
+p_simp_re(p, starordinary)
+register struct parse *p;
+int starordinary;		/* is a leading * an ordinary character? */
+{
+	register int c;
+	register int count;
+	register int count2;
+	register sopno pos;
+	register int i;
+	register sopno subno;
+#	define	BACKSL	(1<<CHAR_BIT)
+
+	pos = HERE();		/* repetion op, if any, covers from here */
+
+	assert(MORE());		/* caller should have ensured this */
+	c = GETNEXT();
+	if (c == '\\') {
+		REQUIRE(MORE(), REG_EESCAPE);
+		c = BACKSL | (unsigned char)GETNEXT();
+	}
+	switch (c) {
+	case '.':
+		if (p->g->cflags&REG_NEWLINE)
+			nonnewline(p);
+		else
+			EMIT(OANY, 0);
+		break;
+	case '[':
+		p_bracket(p);
+		break;
+	case BACKSL|'{':
+		SETERROR(REG_BADRPT);
+		break;
+	case BACKSL|'(':
+		p->g->nsub++;
+		subno = p->g->nsub;
+		if (subno < NPAREN)
+			p->pbegin[subno] = HERE();
+		EMIT(OLPAREN, subno);
+		/* the MORE here is an error heuristic */
+		if (MORE() && !SEETWO('\\', ')'))
+			p_bre(p, '\\', ')');
+		if (subno < NPAREN) {
+			p->pend[subno] = HERE();
+			assert(p->pend[subno] != 0);
+		}
+		EMIT(ORPAREN, subno);
+		REQUIRE(EATTWO('\\', ')'), REG_EPAREN);
+		break;
+	case BACKSL|')':	/* should not get here -- must be user */
+	case BACKSL|'}':
+		SETERROR(REG_EPAREN);
+		break;
+	case BACKSL|'1':
+	case BACKSL|'2':
+	case BACKSL|'3':
+	case BACKSL|'4':
+	case BACKSL|'5':
+	case BACKSL|'6':
+	case BACKSL|'7':
+	case BACKSL|'8':
+	case BACKSL|'9':
+		i = (c&~BACKSL) - '0';
+		assert(i < NPAREN);
+		if (p->pend[i] != 0) {
+			assert(i <= p->g->nsub);
+			EMIT(OBACK_, i);
+			assert(p->pbegin[i] != 0);
+			assert(OP(p->strip[p->pbegin[i]]) == OLPAREN);
+			assert(OP(p->strip[p->pend[i]]) == ORPAREN);
+			(void) dupl(p, p->pbegin[i]+1, p->pend[i]);
+			EMIT(O_BACK, i);
+		} else
+			SETERROR(REG_ESUBREG);
+		p->g->backrefs = 1;
+		break;
+	case '*':
+		REQUIRE(starordinary, REG_BADRPT);
+		/* FALLTHROUGH */
+	default:
+		ordinary(p, c &~ BACKSL);
+		break;
+	}
+
+	if (EAT('*')) {		/* implemented as +? */
+		/* this case does not require the (y|) trick, noKLUDGE */
+		INSERT(OPLUS_, pos);
+		ASTERN(O_PLUS, pos);
+		INSERT(OQUEST_, pos);
+		ASTERN(O_QUEST, pos);
+	} else if (EATTWO('\\', '{')) {
+		count = p_count(p);
+		if (EAT(',')) {
+			if (MORE() && isdigit(PEEK())) {
+				count2 = p_count(p);
+				REQUIRE(count <= count2, REG_BADBR);
+			} else		/* single number with comma */
+				count2 = INFINITY;
+		} else		/* just a single number */
+			count2 = count;
+		repeat(p, pos, count, count2);
+		if (!EATTWO('\\', '}')) {	/* error heuristics */
+			while (MORE() && !SEETWO('\\', '}'))
+				NEXT();
+			REQUIRE(MORE(), REG_EBRACE);
+			SETERROR(REG_BADBR);
+		}
+	} else if (c == (unsigned char)'$')	/* $ (but not \$) ends it */
+		return(1);
+
+	return(0);
+}
+
+/*
+ - p_count - parse a repetition count
+ == static int p_count(register struct parse *p);
+ */
+static int			/* the value */
+p_count(p)
+register struct parse *p;
+{
+	register int count = 0;
+	register int ndigits = 0;
+
+	while (MORE() && isdigit(PEEK()) && count <= DUPMAX) {
+		count = count*10 + (GETNEXT() - '0');
+		ndigits++;
+	}
+
+	REQUIRE(ndigits > 0 && count <= DUPMAX, REG_BADBR);
+	return(count);
+}
+
+/*
+ - p_bracket - parse a bracketed character list
+ == static void p_bracket(register struct parse *p);
+ *
+ * Note a significant property of this code:  if the allocset() did SETERROR,
+ * no set operations are done.
+ */
+static void
+p_bracket(p)
+register struct parse *p;
+{
+	register cset *cs = allocset(p);
+	register int invert = 0;
+
+	/* Dept of Truly Sickening Special-Case Kludges */
+	if (p->next + 5 < p->end && strncmp(p->next, "[:<:]]", 6) == 0) {
+		EMIT(OBOW, 0);
+		NEXTn(6);
+		return;
+	}
+	if (p->next + 5 < p->end && strncmp(p->next, "[:>:]]", 6) == 0) {
+		EMIT(OEOW, 0);
+		NEXTn(6);
+		return;
+	}
+
+	if (EAT('^'))
+		invert++;	/* make note to invert set at end */
+	if (EAT(']'))
+		CHadd(cs, ']');
+	else if (EAT('-'))
+		CHadd(cs, '-');
+	while (MORE() && PEEK() != ']' && !SEETWO('-', ']'))
+		p_b_term(p, cs);
+	if (EAT('-'))
+		CHadd(cs, '-');
+	MUSTEAT(']', REG_EBRACK);
+
+	if (p->error != 0)	/* don't mess things up further */
+		return;
+
+	if (p->g->cflags&REG_ICASE) {
+		register int i;
+		register int ci;
+
+		for (i = p->g->csetsize - 1; i >= 0; i--)
+			if (CHIN(cs, i) && isalpha(i)) {
+				ci = othercase(i);
+				if (ci != i)
+					CHadd(cs, ci);
+			}
+		if (cs->multis != NULL)
+			mccase(p, cs);
+	}
+	if (invert) {
+		register int i;
+
+		for (i = p->g->csetsize - 1; i >= 0; i--)
+			if (CHIN(cs, i))
+				CHsub(cs, i);
+			else
+				CHadd(cs, i);
+		if (p->g->cflags&REG_NEWLINE)
+			CHsub(cs, '\n');
+		if (cs->multis != NULL)
+			mcinvert(p, cs);
+	}
+
+	assert(cs->multis == NULL);		/* xxx */
+
+	if (nch(p, cs) == 1) {		/* optimize singleton sets */
+		ordinary(p, firstch(p, cs));
+		freeset(p, cs);
+	} else
+		EMIT(OANYOF, freezeset(p, cs));
+}
+
+/*
+ - p_b_term - parse one term of a bracketed character list
+ == static void p_b_term(register struct parse *p, register cset *cs);
+ */
+static void
+p_b_term(p, cs)
+register struct parse *p;
+register cset *cs;
+{
+	register char c;
+	register char start, finish;
+	register int i;
+
+	/* classify what we've got */
+	switch ((MORE()) ? PEEK() : '\0') {
+	case '[':
+		c = (MORE2()) ? PEEK2() : '\0';
+		break;
+	case '-':
+		SETERROR(REG_ERANGE);
+		return;			/* NOTE RETURN */
+		break;
+	default:
+		c = '\0';
+		break;
+	}
+
+	switch (c) {
+	case ':':		/* character class */
+		NEXT2();
+		REQUIRE(MORE(), REG_EBRACK);
+		c = PEEK();
+		REQUIRE(c != '-' && c != ']', REG_ECTYPE);
+		p_b_cclass(p, cs);
+		REQUIRE(MORE(), REG_EBRACK);
+		REQUIRE(EATTWO(':', ']'), REG_ECTYPE);
+		break;
+	case '=':		/* equivalence class */
+		NEXT2();
+		REQUIRE(MORE(), REG_EBRACK);
+		c = PEEK();
+		REQUIRE(c != '-' && c != ']', REG_ECOLLATE);
+		p_b_eclass(p, cs);
+		REQUIRE(MORE(), REG_EBRACK);
+		REQUIRE(EATTWO('=', ']'), REG_ECOLLATE);
+		break;
+	default:		/* symbol, ordinary character, or range */
+/* xxx revision needed for multichar stuff */
+		start = p_b_symbol(p);
+		if (SEE('-') && MORE2() && PEEK2() != ']') {
+			/* range */
+			NEXT();
+			if (EAT('-'))
+				finish = '-';
+			else
+				finish = p_b_symbol(p);
+		} else
+			finish = start;
+/* xxx what about signed chars here... */
+		REQUIRE(start <= finish, REG_ERANGE);
+		for (i = start; i <= finish; i++)
+			CHadd(cs, i);
+		break;
+	}
+}
+
+/*
+ - p_b_cclass - parse a character-class name and deal with it
+ == static void p_b_cclass(register struct parse *p, register cset *cs);
+ */
+static void
+p_b_cclass(p, cs)
+register struct parse *p;
+register cset *cs;
+{
+	register char *sp = p->next;
+	register struct cclass *cp;
+	register size_t len;
+	register char *u;
+	register char c;
+
+	while (MORE() && isalpha(PEEK()))
+		NEXT();
+	len = p->next - sp;
+	for (cp = cclasses; cp->name != NULL; cp++)
+		if (strncmp(cp->name, sp, len) == 0 && cp->name[len] == '\0')
+			break;
+	if (cp->name == NULL) {
+		/* oops, didn't find it */
+		SETERROR(REG_ECTYPE);
+		return;
+	}
+
+	u = cp->chars;
+	while ((c = *u++) != '\0')
+		CHadd(cs, c);
+	for (u = cp->multis; *u != '\0'; u += strlen(u) + 1)
+		MCadd(p, cs, u);
+}
+
+/*
+ - p_b_eclass - parse an equivalence-class name and deal with it
+ == static void p_b_eclass(register struct parse *p, register cset *cs);
+ *
+ * This implementation is incomplete. xxx
+ */
+static void
+p_b_eclass(p, cs)
+register struct parse *p;
+register cset *cs;
+{
+	register char c;
+
+	c = p_b_coll_elem(p, '=');
+	CHadd(cs, c);
+}
+
+/*
+ - p_b_symbol - parse a character or [..]ed multicharacter collating symbol
+ == static char p_b_symbol(register struct parse *p);
+ */
+static char			/* value of symbol */
+p_b_symbol(p)
+register struct parse *p;
+{
+	register char value;
+
+	REQUIRE(MORE(), REG_EBRACK);
+	if (!EATTWO('[', '.'))
+		return(GETNEXT());
+
+	/* collating symbol */
+	value = p_b_coll_elem(p, '.');
+	REQUIRE(EATTWO('.', ']'), REG_ECOLLATE);
+	return(value);
+}
+
+/*
+ - p_b_coll_elem - parse a collating-element name and look it up
+ == static char p_b_coll_elem(register struct parse *p, int endc);
+ */
+static char			/* value of collating element */
+p_b_coll_elem(p, endc)
+register struct parse *p;
+int endc;			/* name ended by endc,']' */
+{
+	register char *sp = p->next;
+	register struct cname *cp;
+	register int len;
+
+	while (MORE() && !SEETWO(endc, ']'))
+		NEXT();
+	if (!MORE()) {
+		SETERROR(REG_EBRACK);
+		return(0);
+	}
+	len = p->next - sp;
+	for (cp = cnames; cp->name != NULL; cp++)
+		if (strncmp(cp->name, sp, len) == 0 && cp->name[len] == '\0')
+			return(cp->code);	/* known name */
+	if (len == 1)
+		return(*sp);	/* single character */
+	SETERROR(REG_ECOLLATE);			/* neither */
+	return(0);
+}
+
+/*
+ - othercase - return the case counterpart of an alphabetic
+ == static char othercase(int ch);
+ */
+static char			/* if no counterpart, return ch */
+othercase(ch)
+int ch;
+{
+	assert(isalpha(ch));
+	if (isupper(ch))
+		return(tolower(ch));
+	else if (islower(ch))
+		return(toupper(ch));
+	else			/* peculiar, but could happen */
+		return(ch);
+}
+
+/*
+ - bothcases - emit a dualcase version of a two-case character
+ == static void bothcases(register struct parse *p, int ch);
+ *
+ * Boy, is this implementation ever a kludge...
+ */
+static void
+bothcases(p, ch)
+register struct parse *p;
+int ch;
+{
+	register char *oldnext = p->next;
+	register char *oldend = p->end;
+	char bracket[3];
+
+	assert(othercase(ch) != ch);	/* p_bracket() would recurse */
+	p->next = bracket;
+	p->end = bracket+2;
+	bracket[0] = ch;
+	bracket[1] = ']';
+	bracket[2] = '\0';
+	p_bracket(p);
+	assert(p->next == bracket+2);
+	p->next = oldnext;
+	p->end = oldend;
+}
+
+/*
+ - ordinary - emit an ordinary character
+ == static void ordinary(register struct parse *p, register int ch);
+ */
+static void
+ordinary(p, ch)
+register struct parse *p;
+register int ch;
+{
+	register cat_t *cap = p->g->categories;
+
+	if ((p->g->cflags&REG_ICASE) && isalpha(ch) && othercase(ch) != ch)
+		bothcases(p, ch);
+	else {
+		EMIT(OCHAR, (unsigned char)ch);
+		if (cap[ch] == 0)
+			cap[ch] = p->g->ncategories++;
+	}
+}
+
+/*
+ - nonnewline - emit REG_NEWLINE version of OANY
+ == static void nonnewline(register struct parse *p);
+ *
+ * Boy, is this implementation ever a kludge...
+ */
+static void
+nonnewline(p)
+register struct parse *p;
+{
+	register char *oldnext = p->next;
+	register char *oldend = p->end;
+	char bracket[4];
+
+	p->next = bracket;
+	p->end = bracket+3;
+	bracket[0] = '^';
+	bracket[1] = '\n';
+	bracket[2] = ']';
+	bracket[3] = '\0';
+	p_bracket(p);
+	assert(p->next == bracket+3);
+	p->next = oldnext;
+	p->end = oldend;
+}
+
+/*
+ - repeat - generate code for a bounded repetition, recursively if needed
+ == static void repeat(register struct parse *p, sopno start, int from, int to);
+ */
+static void
+repeat(p, start, from, to)
+register struct parse *p;
+sopno start;			/* operand from here to end of strip */
+int from;			/* repeated from this number */
+int to;				/* to this number of times (maybe INFINITY) */
+{
+	register sopno finish = HERE();
+#	define	N	2
+#	define	INF	3
+#	define	REP(f, t)	((f)*8 + (t))
+#	define	MAP(n)	(((n) <= 1) ? (n) : ((n) == INFINITY) ? INF : N)
+	register sopno copy;
+
+	if (p->error != 0)	/* head off possible runaway recursion */
+		return;
+
+	assert(from <= to);
+
+	switch (REP(MAP(from), MAP(to))) {
+	case REP(0, 0):			/* must be user doing this */
+		DROP(finish-start);	/* drop the operand */
+		break;
+	case REP(0, 1):			/* as x{1,1}? */
+	case REP(0, N):			/* as x{1,n}? */
+	case REP(0, INF):		/* as x{1,}? */
+		/* KLUDGE: emit y? as (y|) until subtle bug gets fixed */
+		INSERT(OCH_, start);		/* offset is wrong... */
+		repeat(p, start+1, 1, to);
+		ASTERN(OOR1, start);
+		AHEAD(start);			/* ... fix it */
+		EMIT(OOR2, 0);
+		AHEAD(THERE());
+		ASTERN(O_CH, THERETHERE());
+		break;
+	case REP(1, 1):			/* trivial case */
+		/* done */
+		break;
+	case REP(1, N):			/* as x?x{1,n-1} */
+		/* KLUDGE: emit y? as (y|) until subtle bug gets fixed */
+		INSERT(OCH_, start);
+		ASTERN(OOR1, start);
+		AHEAD(start);
+		EMIT(OOR2, 0);			/* offset very wrong... */
+		AHEAD(THERE());			/* ...so fix it */
+		ASTERN(O_CH, THERETHERE());
+		copy = dupl(p, start+1, finish+1);
+		assert(copy == finish+4);
+		repeat(p, copy, 1, to-1);
+		break;
+	case REP(1, INF):		/* as x+ */
+		INSERT(OPLUS_, start);
+		ASTERN(O_PLUS, start);
+		break;
+	case REP(N, N):			/* as xx{m-1,n-1} */
+		copy = dupl(p, start, finish);
+		repeat(p, copy, from-1, to-1);
+		break;
+	case REP(N, INF):		/* as xx{n-1,INF} */
+		copy = dupl(p, start, finish);
+		repeat(p, copy, from-1, to);
+		break;
+	default:			/* "can't happen" */
+		SETERROR(REG_ASSERT);	/* just in case */
+		break;
+	}
+}
+
+/*
+ - seterr - set an error condition
+ == static int seterr(register struct parse *p, int e);
+ */
+static int			/* useless but makes type checking happy */
+seterr(p, e)
+register struct parse *p;
+int e;
+{
+	if (p->error == 0)	/* keep earliest error condition */
+		p->error = e;
+	p->next = nuls;		/* try to bring things to a halt */
+	p->end = nuls;
+	return(0);		/* make the return value well-defined */
+}
+
+/*
+ - allocset - allocate a set of characters for []
+ == static cset *allocset(register struct parse *p);
+ */
+static cset *
+allocset(p)
+register struct parse *p;
+{
+	register int no = p->g->ncsets++;
+	register size_t nc;
+	register size_t nbytes;
+	register cset *cs;
+	register size_t css = (size_t)p->g->csetsize;
+	register int i;
+
+	if (no >= p->ncsalloc) {	/* need another column of space */
+		p->ncsalloc += CHAR_BIT;
+		nc = p->ncsalloc;
+		assert(nc % CHAR_BIT == 0);
+		nbytes = nc / CHAR_BIT * css;
+		if (p->g->sets == NULL)
+			p->g->sets = (cset *)malloc(nc * sizeof(cset));
+		else
+			p->g->sets = (cset *)realloc((char *)p->g->sets,
+							nc * sizeof(cset));
+		if (p->g->setbits == NULL)
+			p->g->setbits = (uch *)malloc(nbytes);
+		else {
+			p->g->setbits = (uch *)realloc((char *)p->g->setbits,
+								nbytes);
+			/* xxx this isn't right if setbits is now NULL */
+			for (i = 0; i < no; i++)
+				p->g->sets[i].ptr = p->g->setbits + css*(i/CHAR_BIT);
+		}
+		if (p->g->sets != NULL && p->g->setbits != NULL)
+			(void) memset((char *)p->g->setbits + (nbytes - css),
+								0, css);
+		else {
+			no = 0;
+			SETERROR(REG_ESPACE);
+			/* caller's responsibility not to do set ops */
+		}
+	}
+
+	assert(p->g->sets != NULL);	/* xxx */
+	cs = &p->g->sets[no];
+	cs->ptr = p->g->setbits + css*((no)/CHAR_BIT);
+	cs->mask = 1 << ((no) % CHAR_BIT);
+	cs->hash = 0;
+	cs->smultis = 0;
+	cs->multis = NULL;
+
+	return(cs);
+}
+
+/*
+ - freeset - free a now-unused set
+ == static void freeset(register struct parse *p, register cset *cs);
+ */
+static void
+freeset(p, cs)
+register struct parse *p;
+register cset *cs;
+{
+	register int i;
+	register cset *top = &p->g->sets[p->g->ncsets];
+	register size_t css = (size_t)p->g->csetsize;
+
+	for (i = 0; i < css; i++)
+		CHsub(cs, i);
+	if (cs == top-1)	/* recover only the easy case */
+		p->g->ncsets--;
+}
+
+/*
+ - freezeset - final processing on a set of characters
+ == static int freezeset(register struct parse *p, register cset *cs);
+ *
+ * The main task here is merging identical sets.  This is usually a waste
+ * of time (although the hash code minimizes the overhead), but can win
+ * big if REG_ICASE is being used.  REG_ICASE, by the way, is why the hash
+ * is done using addition rather than xor -- all ASCII [aA] sets xor to
+ * the same value!
+ */
+static int			/* set number */
+freezeset(p, cs)
+register struct parse *p;
+register cset *cs;
+{
+	register uch h = cs->hash;
+	register int i;
+	register cset *top = &p->g->sets[p->g->ncsets];
+	register cset *cs2;
+	register size_t css = (size_t)p->g->csetsize;
+
+	/* look for an earlier one which is the same */
+	for (cs2 = &p->g->sets[0]; cs2 < top; cs2++)
+		if (cs2->hash == h && cs2 != cs) {
+			/* maybe */
+			for (i = 0; i < css; i++)
+				if (!!CHIN(cs2, i) != !!CHIN(cs, i))
+					break;		/* no */
+			if (i == css)
+				break;			/* yes */
+		}
+
+	if (cs2 < top) {	/* found one */
+		freeset(p, cs);
+		cs = cs2;
+	}
+
+	return((int)(cs - p->g->sets));
+}
+
+/*
+ - firstch - return first character in a set (which must have at least one)
+ == static int firstch(register struct parse *p, register cset *cs);
+ */
+static int			/* character; there is no "none" value */
+firstch(p, cs)
+register struct parse *p;
+register cset *cs;
+{
+	register int i;
+	register size_t css = (size_t)p->g->csetsize;
+
+	for (i = 0; i < css; i++)
+		if (CHIN(cs, i))
+			return((char)i);
+	assert(never);
+	return(0);		/* arbitrary */
+}
+
+/*
+ - nch - number of characters in a set
+ == static int nch(register struct parse *p, register cset *cs);
+ */
+static int
+nch(p, cs)
+register struct parse *p;
+register cset *cs;
+{
+	register int i;
+	register size_t css = (size_t)p->g->csetsize;
+	register int n = 0;
+
+	for (i = 0; i < css; i++)
+		if (CHIN(cs, i))
+			n++;
+	return(n);
+}
+
+/*
+ - mcadd - add a collating element to a cset
+ == static void mcadd(register struct parse *p, register cset *cs, \
+ ==	register char *cp);
+ */
+static void
+mcadd(p, cs, cp)
+register struct parse *p;
+register cset *cs;
+register char *cp;
+{
+	register size_t oldend = cs->smultis;
+
+	cs->smultis += strlen(cp) + 1;
+	if (cs->multis == NULL)
+		cs->multis = malloc(cs->smultis);
+	else
+		cs->multis = realloc(cs->multis, cs->smultis);
+	if (cs->multis == NULL) {
+		SETERROR(REG_ESPACE);
+		return;
+	}
+
+	(void) strcpy(cs->multis + oldend - 1, cp);
+	cs->multis[cs->smultis - 1] = '\0';
+}
+
+/*
+ - mcsub - subtract a collating element from a cset
+ == static void mcsub(register cset *cs, register char *cp);
+ */
+static void
+mcsub(cs, cp)
+register cset *cs;
+register char *cp;
+{
+	register char *fp = mcfind(cs, cp);
+	register size_t len = strlen(fp);
+
+	assert(fp != NULL);
+	(void) memmove(fp, fp + len + 1,
+				cs->smultis - (fp + len + 1 - cs->multis));
+	cs->smultis -= len;
+
+	if (cs->smultis == 0) {
+		free(cs->multis);
+		cs->multis = NULL;
+		return;
+	}
+
+	cs->multis = realloc(cs->multis, cs->smultis);
+	assert(cs->multis != NULL);
+}
+
+/*
+ - mcin - is a collating element in a cset?
+ == static int mcin(register cset *cs, register char *cp);
+ */
+static int
+mcin(cs, cp)
+register cset *cs;
+register char *cp;
+{
+	return(mcfind(cs, cp) != NULL);
+}
+
+/*
+ - mcfind - find a collating element in a cset
+ == static char *mcfind(register cset *cs, register char *cp);
+ */
+static char *
+mcfind(cs, cp)
+register cset *cs;
+register char *cp;
+{
+	register char *p;
+
+	if (cs->multis == NULL)
+		return(NULL);
+	for (p = cs->multis; *p != '\0'; p += strlen(p) + 1)
+		if (strcmp(cp, p) == 0)
+			return(p);
+	return(NULL);
+}
+
+/*
+ - mcinvert - invert the list of collating elements in a cset
+ == static void mcinvert(register struct parse *p, register cset *cs);
+ *
+ * This would have to know the set of possibilities.  Implementation
+ * is deferred.
+ */
+static void
+mcinvert(p, cs)
+register struct parse *p;
+register cset *cs;
+{
+	assert(cs->multis == NULL);	/* xxx */
+}
+
+/*
+ - mccase - add case counterparts of the list of collating elements in a cset
+ == static void mccase(register struct parse *p, register cset *cs);
+ *
+ * This would have to know the set of possibilities.  Implementation
+ * is deferred.
+ */
+static void
+mccase(p, cs)
+register struct parse *p;
+register cset *cs;
+{
+	assert(cs->multis == NULL);	/* xxx */
+}
+
+/*
+ - isinsets - is this character in any sets?
+ == static int isinsets(register struct re_guts *g, int c);
+ */
+static int			/* predicate */
+isinsets(g, c)
+register struct re_guts *g;
+int c;
+{
+	register uch *col;
+	register int i;
+	register int ncols = (g->ncsets+(CHAR_BIT-1)) / CHAR_BIT;
+	register unsigned uc = (unsigned char)c;
+
+	for (i = 0, col = g->setbits; i < ncols; i++, col += g->csetsize)
+		if (col[uc] != 0)
+			return(1);
+	return(0);
+}
+
+/*
+ - samesets - are these two characters in exactly the same sets?
+ == static int samesets(register struct re_guts *g, int c1, int c2);
+ */
+static int			/* predicate */
+samesets(g, c1, c2)
+register struct re_guts *g;
+int c1;
+int c2;
+{
+	register uch *col;
+	register int i;
+	register int ncols = (g->ncsets+(CHAR_BIT-1)) / CHAR_BIT;
+	register unsigned uc1 = (unsigned char)c1;
+	register unsigned uc2 = (unsigned char)c2;
+
+	for (i = 0, col = g->setbits; i < ncols; i++, col += g->csetsize)
+		if (col[uc1] != col[uc2])
+			return(0);
+	return(1);
+}
+
+/*
+ - categorize - sort out character categories
+ == static void categorize(struct parse *p, register struct re_guts *g);
+ */
+static void
+categorize(p, g)
+struct parse *p;
+register struct re_guts *g;
+{
+	register cat_t *cats = g->categories;
+	register int c;
+	register int c2;
+	register cat_t cat;
+
+	/* avoid making error situations worse */
+	if (p->error != 0)
+		return;
+
+	for (c = CHAR_MIN; c <= CHAR_MAX; c++)
+		if (cats[c] == 0 && isinsets(g, c)) {
+			cat = g->ncategories++;
+			cats[c] = cat;
+			for (c2 = c+1; c2 <= CHAR_MAX; c2++)
+				if (cats[c2] == 0 && samesets(g, c, c2))
+					cats[c2] = cat;
+		}
+}
+
+/*
+ - dupl - emit a duplicate of a bunch of sops
+ == static sopno dupl(register struct parse *p, sopno start, sopno finish);
+ */
+static sopno			/* start of duplicate */
+dupl(p, start, finish)
+register struct parse *p;
+sopno start;			/* from here */
+sopno finish;			/* to this less one */
+{
+	register sopno ret = HERE();
+	register sopno len = finish - start;
+
+	assert(finish >= start);
+	if (len == 0)
+		return(ret);
+	enlarge(p, p->ssize + len);	/* this many unexpected additions */
+	assert(p->ssize >= p->slen + len);
+	(void) memcpy((char *)(p->strip + p->slen),
+		(char *)(p->strip + start), (size_t)len*sizeof(sop));
+	p->slen += len;
+	return(ret);
+}
+
+/*
+ - doemit - emit a strip operator
+ == static void doemit(register struct parse *p, sop op, size_t opnd);
+ *
+ * It might seem better to implement this as a macro with a function as
+ * hard-case backup, but it's just too big and messy unless there are
+ * some changes to the data structures.  Maybe later.
+ */
+static void
+doemit(p, op, opnd)
+register struct parse *p;
+sop op;
+size_t opnd;
+{
+	/* avoid making error situations worse */
+	if (p->error != 0)
+		return;
+
+	/* deal with oversize operands ("can't happen", more or less) */
+	assert(opnd < 1<<OPSHIFT);
+
+	/* deal with undersized strip */
+	if (p->slen >= p->ssize)
+		enlarge(p, (p->ssize+1) / 2 * 3);	/* +50% */
+	assert(p->slen < p->ssize);
+
+	/* finally, it's all reduced to the easy case */
+	p->strip[p->slen++] = SOP(op, opnd);
+}
+
+/*
+ - doinsert - insert a sop into the strip
+ == static void doinsert(register struct parse *p, sop op, size_t opnd, sopno pos);
+ */
+static void
+doinsert(p, op, opnd, pos)
+register struct parse *p;
+sop op;
+size_t opnd;
+sopno pos;
+{
+	register sopno sn;
+	register sop s;
+	register int i;
+
+	/* avoid making error situations worse */
+	if (p->error != 0)
+		return;
+
+	sn = HERE();
+	EMIT(op, opnd);		/* do checks, ensure space */
+	assert(HERE() == sn+1);
+	s = p->strip[sn];
+
+	/* adjust paren pointers */
+	assert(pos > 0);
+	for (i = 1; i < NPAREN; i++) {
+		if (p->pbegin[i] >= pos) {
+			p->pbegin[i]++;
+		}
+		if (p->pend[i] >= pos) {
+			p->pend[i]++;
+		}
+	}
+
+	memmove((char *)&p->strip[pos+1], (char *)&p->strip[pos],
+						(HERE()-pos-1)*sizeof(sop));
+	p->strip[pos] = s;
+}
+
+/*
+ - dofwd - complete a forward reference
+ == static void dofwd(register struct parse *p, sopno pos, sop value);
+ */
+static void
+dofwd(p, pos, value)
+register struct parse *p;
+register sopno pos;
+sop value;
+{
+	/* avoid making error situations worse */
+	if (p->error != 0)
+		return;
+
+	assert(value < 1<<OPSHIFT);
+	p->strip[pos] = OP(p->strip[pos]) | value;
+}
+
+/*
+ - enlarge - enlarge the strip
+ == static void enlarge(register struct parse *p, sopno size);
+ */
+static void
+enlarge(p, size)
+register struct parse *p;
+register sopno size;
+{
+	register sop *sp;
+
+	if (p->ssize >= size)
+		return;
+
+	sp = (sop *)realloc(p->strip, size*sizeof(sop));
+	if (sp == NULL) {
+		SETERROR(REG_ESPACE);
+		return;
+	}
+	p->strip = sp;
+	p->ssize = size;
+}
+
+/*
+ - stripsnug - compact the strip
+ == static void stripsnug(register struct parse *p, register struct re_guts *g);
+ */
+static void
+stripsnug(p, g)
+register struct parse *p;
+register struct re_guts *g;
+{
+	g->nstates = p->slen;
+	g->strip = (sop *)realloc((char *)p->strip, p->slen * sizeof(sop));
+	if (g->strip == NULL) {
+		SETERROR(REG_ESPACE);
+		g->strip = p->strip;
+	}
+}
+
+/*
+ - findmust - fill in must and mlen with longest mandatory literal string
+ == static void findmust(register struct parse *p, register struct re_guts *g);
+ *
+ * This algorithm could do fancy things like analyzing the operands of |
+ * for common subsequences.  Someday.  This code is simple and finds most
+ * of the interesting cases.
+ *
+ * Note that must and mlen got initialized during setup.
+ */
+static void
+findmust(p, g)
+struct parse *p;
+register struct re_guts *g;
+{
+	register sop *scan;
+	sop *start;
+	register sop *newstart;
+	register sopno newlen;
+	register sop s;
+	register char *cp;
+	register sopno i;
+
+	/* avoid making error situations worse */
+	if (p->error != 0)
+		return;
+
+	/* find the longest OCHAR sequence in strip */
+	newlen = 0;
+	scan = g->strip + 1;
+	do {
+		s = *scan++;
+		switch (OP(s)) {
+		case OCHAR:		/* sequence member */
+			if (newlen == 0)		/* new sequence */
+				newstart = scan - 1;
+			newlen++;
+			break;
+		case OPLUS_:		/* things that don't break one */
+		case OLPAREN:
+		case ORPAREN:
+			break;
+		case OQUEST_:		/* things that must be skipped */
+		case OCH_:
+			scan--;
+			do {
+				scan += OPND(s);
+				s = *scan;
+				/* assert() interferes w debug printouts */
+				if (OP(s) != O_QUEST && OP(s) != O_CH &&
+							OP(s) != OOR2) {
+					g->iflags |= BAD;
+					return;
+				}
+			} while (OP(s) != O_QUEST && OP(s) != O_CH);
+			/* fallthrough */
+		default:		/* things that break a sequence */
+			if (newlen > g->mlen) {		/* ends one */
+				start = newstart;
+				g->mlen = newlen;
+			}
+			newlen = 0;
+			break;
+		}
+	} while (OP(s) != OEND);
+
+	if (g->mlen == 0)		/* there isn't one */
+		return;
+
+	/* turn it into a character string */
+	g->must = malloc((size_t)g->mlen + 1);
+	if (g->must == NULL) {		/* argh; just forget it */
+		g->mlen = 0;
+		return;
+	}
+	cp = g->must;
+	scan = start;
+	for (i = g->mlen; i > 0; i--) {
+		while (OP(s = *scan++) != OCHAR)
+			continue;
+		assert(cp < g->must + g->mlen);
+		*cp++ = (char)OPND(s);
+	}
+	assert(cp == g->must + g->mlen);
+	*cp++ = '\0';		/* just on general principles */
+}
+
+/*
+ - pluscount - count + nesting
+ == static sopno pluscount(register struct parse *p, register struct re_guts *g);
+ */
+static sopno			/* nesting depth */
+pluscount(p, g)
+struct parse *p;
+register struct re_guts *g;
+{
+	register sop *scan;
+	register sop s;
+	register sopno plusnest = 0;
+	register sopno maxnest = 0;
+
+	if (p->error != 0)
+		return(0);	/* there may not be an OEND */
+
+	scan = g->strip + 1;
+	do {
+		s = *scan++;
+		switch (OP(s)) {
+		case OPLUS_:
+			plusnest++;
+			break;
+		case O_PLUS:
+			if (plusnest > maxnest)
+				maxnest = plusnest;
+			plusnest--;
+			break;
+		}
+	} while (OP(s) != OEND);
+	if (plusnest != 0)
+		g->iflags |= BAD;
+	return(maxnest);
+}
diff --git a/lib/libc/regex/regerror.c b/lib/libc/regex/regerror.c
new file mode 100644
index 0000000..212f709
--- /dev/null
+++ b/lib/libc/regex/regerror.c
@@ -0,0 +1,178 @@
+/*-
+ * Copyright (c) 1992, 1993, 1994 Henry Spencer.
+ * Copyright (c) 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Henry Spencer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)regerror.c	8.4 (Berkeley) 3/20/94
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)regerror.c	8.4 (Berkeley) 3/20/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <regex.h>
+
+#include "utils.h"
+
+/* ========= begin header generated by ./mkh ========= */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* === regerror.c === */
+static char *regatoi __P((const regex_t *preg, char *localbuf));
+
+#ifdef __cplusplus
+}
+#endif
+/* ========= end header generated by ./mkh ========= */
+/*
+ = #define	REG_NOMATCH	 1
+ = #define	REG_BADPAT	 2
+ = #define	REG_ECOLLATE	 3
+ = #define	REG_ECTYPE	 4
+ = #define	REG_EESCAPE	 5
+ = #define	REG_ESUBREG	 6
+ = #define	REG_EBRACK	 7
+ = #define	REG_EPAREN	 8
+ = #define	REG_EBRACE	 9
+ = #define	REG_BADBR	10
+ = #define	REG_ERANGE	11
+ = #define	REG_ESPACE	12
+ = #define	REG_BADRPT	13
+ = #define	REG_EMPTY	14
+ = #define	REG_ASSERT	15
+ = #define	REG_INVARG	16
+ = #define	REG_ATOI	255	// convert name to number (!)
+ = #define	REG_ITOA	0400	// convert number to name (!)
+ */
+static struct rerr {
+	int code;
+	char *name;
+	char *explain;
+} rerrs[] = {
+	REG_NOMATCH,	"REG_NOMATCH",	"regexec() failed to match",
+	REG_BADPAT,	"REG_BADPAT",	"invalid regular expression",
+	REG_ECOLLATE,	"REG_ECOLLATE",	"invalid collating element",
+	REG_ECTYPE,	"REG_ECTYPE",	"invalid character class",
+	REG_EESCAPE,	"REG_EESCAPE",	"trailing backslash (\\)",
+	REG_ESUBREG,	"REG_ESUBREG",	"invalid backreference number",
+	REG_EBRACK,	"REG_EBRACK",	"brackets ([ ]) not balanced",
+	REG_EPAREN,	"REG_EPAREN",	"parentheses not balanced",
+	REG_EBRACE,	"REG_EBRACE",	"braces not balanced",
+	REG_BADBR,	"REG_BADBR",	"invalid repetition count(s)",
+	REG_ERANGE,	"REG_ERANGE",	"invalid character range",
+	REG_ESPACE,	"REG_ESPACE",	"out of memory",
+	REG_BADRPT,	"REG_BADRPT",	"repetition-operator operand invalid",
+	REG_EMPTY,	"REG_EMPTY",	"empty (sub)expression",
+	REG_ASSERT,	"REG_ASSERT",	"\"can't happen\" -- you found a bug",
+	REG_INVARG,	"REG_INVARG",	"invalid argument to regex routine",
+	0,		"",		"*** unknown regexp error code ***",
+};
+
+/*
+ - regerror - the interface to error numbers
+ = extern size_t regerror(int, const regex_t *, char *, size_t);
+ */
+/* ARGSUSED */
+size_t
+regerror(errcode, preg, errbuf, errbuf_size)
+int errcode;
+const regex_t *preg;
+char *errbuf;
+size_t errbuf_size;
+{
+	register struct rerr *r;
+	register size_t len;
+	register int target = errcode &~ REG_ITOA;
+	register char *s;
+	char convbuf[50];
+
+	if (errcode == REG_ATOI)
+		s = regatoi(preg, convbuf);
+	else {
+		for (r = rerrs; r->code != 0; r++)
+			if (r->code == target)
+				break;
+
+		if (errcode&REG_ITOA) {
+			if (r->code != 0)
+				(void) strcpy(convbuf, r->name);
+			else
+				sprintf(convbuf, "REG_0x%x", target);
+			assert(strlen(convbuf) < sizeof(convbuf));
+			s = convbuf;
+		} else
+			s = r->explain;
+	}
+
+	len = strlen(s) + 1;
+	if (errbuf_size > 0) {
+		if (errbuf_size > len)
+			(void) strcpy(errbuf, s);
+		else {
+			(void) strncpy(errbuf, s, errbuf_size-1);
+			errbuf[errbuf_size-1] = '\0';
+		}
+	}
+
+	return(len);
+}
+
+/*
+ - regatoi - internal routine to implement REG_ATOI
+ == static char *regatoi(const regex_t *preg, char *localbuf);
+ */
+static char *
+regatoi(preg, localbuf)
+const regex_t *preg;
+char *localbuf;
+{
+	register struct rerr *r;
+
+	for (r = rerrs; r->code != 0; r++)
+		if (strcmp(r->name, preg->re_endp) == 0)
+			break;
+	if (r->code == 0)
+		return("0");
+
+	sprintf(localbuf, "%d", r->code);
+	return(localbuf);
+}
diff --git a/lib/libc/regex/regex.3 b/lib/libc/regex/regex.3
new file mode 100644
index 0000000..66a7285
--- /dev/null
+++ b/lib/libc/regex/regex.3
@@ -0,0 +1,538 @@
+.\" Copyright (c) 1992, 1993, 1994 Henry Spencer.
+.\" Copyright (c) 1992, 1993, 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Henry Spencer.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)regex.3	8.4 (Berkeley) 3/20/94
+.\"
+.TH REGEX 3 "March 20, 1994"
+.de ZR
+.\" one other place knows this name:  the SEE ALSO section
+.IR re_format (7) \\$1
+..
+.SH NAME
+regcomp, regexec, regerror, regfree \- regular-expression library
+.SH SYNOPSIS
+.ft B
+.\".na
+#include <sys/types.h>
+.br
+#include <regex.h>
+.HP 10
+int regcomp(regex_t\ *preg, const\ char\ *pattern, int\ cflags);
+.HP
+int\ regexec(const\ regex_t\ *preg, const\ char\ *string,
+size_t\ nmatch, regmatch_t\ pmatch[], int\ eflags);
+.HP
+size_t\ regerror(int\ errcode, const\ regex_t\ *preg,
+char\ *errbuf, size_t\ errbuf_size);
+.HP
+void\ regfree(regex_t\ *preg);
+.\".ad
+.ft
+.SH DESCRIPTION
+These routines implement POSIX 1003.2 regular expressions (``RE''s);
+see
+.ZR .
+.I Regcomp
+compiles an RE written as a string into an internal form,
+.I regexec
+matches that internal form against a string and reports results,
+.I regerror
+transforms error codes from either into human-readable messages,
+and
+.I regfree
+frees any dynamically-allocated storage used by the internal form
+of an RE.
+.PP
+The header
+.I <regex.h>
+declares two structure types,
+.I regex_t
+and
+.IR regmatch_t ,
+the former for compiled internal forms and the latter for match reporting.
+It also declares the four functions,
+a type
+.IR regoff_t ,
+and a number of constants with names starting with ``REG_''.
+.PP
+.I Regcomp
+compiles the regular expression contained in the
+.I pattern
+string,
+subject to the flags in
+.IR cflags ,
+and places the results in the
+.I regex_t
+structure pointed to by
+.IR preg .
+.I Cflags
+is the bitwise OR of zero or more of the following flags:
+.IP REG_EXTENDED \w'REG_EXTENDED'u+2n
+Compile modern (``extended'') REs,
+rather than the obsolete (``basic'') REs that
+are the default.
+.IP REG_BASIC
+This is a synonym for 0,
+provided as a counterpart to REG_EXTENDED to improve readability.
+.IP REG_NOSPEC
+Compile with recognition of all special characters turned off.
+All characters are thus considered ordinary,
+so the ``RE'' is a literal string.
+This is an extension,
+compatible with but not specified by POSIX 1003.2,
+and should be used with
+caution in software intended to be portable to other systems.
+REG_EXTENDED and REG_NOSPEC may not be used
+in the same call to
+.IR regcomp .
+.IP REG_ICASE
+Compile for matching that ignores upper/lower case distinctions.
+See
+.ZR .
+.IP REG_NOSUB
+Compile for matching that need only report success or failure,
+not what was matched.
+.IP REG_NEWLINE
+Compile for newline-sensitive matching.
+By default, newline is a completely ordinary character with no special
+meaning in either REs or strings.
+With this flag,
+`[^' bracket expressions and `.' never match newline,
+a `^' anchor matches the null string after any newline in the string
+in addition to its normal function,
+and the `$' anchor matches the null string before any newline in the
+string in addition to its normal function.
+.IP REG_PEND
+The regular expression ends,
+not at the first NUL,
+but just before the character pointed to by the
+.I re_endp
+member of the structure pointed to by
+.IR preg .
+The
+.I re_endp
+member is of type
+.IR const\ char\ * .
+This flag permits inclusion of NULs in the RE;
+they are considered ordinary characters.
+This is an extension,
+compatible with but not specified by POSIX 1003.2,
+and should be used with
+caution in software intended to be portable to other systems.
+.PP
+When successful,
+.I regcomp
+returns 0 and fills in the structure pointed to by
+.IR preg .
+One member of that structure
+(other than
+.IR re_endp )
+is publicized:
+.IR re_nsub ,
+of type
+.IR size_t ,
+contains the number of parenthesized subexpressions within the RE
+(except that the value of this member is undefined if the
+REG_NOSUB flag was used).
+If
+.I regcomp
+fails, it returns a non-zero error code;
+see DIAGNOSTICS.
+.PP
+.I Regexec
+matches the compiled RE pointed to by
+.I preg
+against the
+.IR string ,
+subject to the flags in
+.IR eflags ,
+and reports results using
+.IR nmatch ,
+.IR pmatch ,
+and the returned value.
+The RE must have been compiled by a previous invocation of
+.IR regcomp .
+The compiled form is not altered during execution of
+.IR regexec ,
+so a single compiled RE can be used simultaneously by multiple threads.
+.PP
+By default,
+the NUL-terminated string pointed to by
+.I string
+is considered to be the text of an entire line, minus any terminating
+newline.
+The
+.I eflags
+argument is the bitwise OR of zero or more of the following flags:
+.IP REG_NOTBOL \w'REG_STARTEND'u+2n
+The first character of
+the string
+is not the beginning of a line, so the `^' anchor should not match before it.
+This does not affect the behavior of newlines under REG_NEWLINE.
+.IP REG_NOTEOL
+The NUL terminating
+the string
+does not end a line, so the `$' anchor should not match before it.
+This does not affect the behavior of newlines under REG_NEWLINE.
+.IP REG_STARTEND
+The string is considered to start at
+\fIstring\fR\ + \fIpmatch\fR[0].\fIrm_so\fR
+and to have a terminating NUL located at
+\fIstring\fR\ + \fIpmatch\fR[0].\fIrm_eo\fR
+(there need not actually be a NUL at that location),
+regardless of the value of
+.IR nmatch .
+See below for the definition of
+.IR pmatch
+and
+.IR nmatch .
+This is an extension,
+compatible with but not specified by POSIX 1003.2,
+and should be used with
+caution in software intended to be portable to other systems.
+Note that a non-zero \fIrm_so\fR does not imply REG_NOTBOL;
+REG_STARTEND affects only the location of the string,
+not how it is matched.
+.PP
+See
+.ZR
+for a discussion of what is matched in situations where an RE or a
+portion thereof could match any of several substrings of
+.IR string .
+.PP
+Normally,
+.I regexec
+returns 0 for success and the non-zero code REG_NOMATCH for failure.
+Other non-zero error codes may be returned in exceptional situations;
+see DIAGNOSTICS.
+.PP
+If REG_NOSUB was specified in the compilation of the RE,
+or if
+.I nmatch
+is 0,
+.I regexec
+ignores the
+.I pmatch
+argument (but see below for the case where REG_STARTEND is specified).
+Otherwise,
+.I pmatch
+points to an array of
+.I nmatch
+structures of type
+.IR regmatch_t .
+Such a structure has at least the members
+.I rm_so
+and
+.IR rm_eo ,
+both of type
+.I regoff_t
+(a signed arithmetic type at least as large as an
+.I off_t
+and a
+.IR ssize_t ),
+containing respectively the offset of the first character of a substring
+and the offset of the first character after the end of the substring.
+Offsets are measured from the beginning of the
+.I string
+argument given to
+.IR regexec .
+An empty substring is denoted by equal offsets,
+both indicating the character following the empty substring.
+.PP
+The 0th member of the
+.I pmatch
+array is filled in to indicate what substring of
+.I string
+was matched by the entire RE.
+Remaining members report what substring was matched by parenthesized
+subexpressions within the RE;
+member
+.I i
+reports subexpression
+.IR i ,
+with subexpressions counted (starting at 1) by the order of their opening
+parentheses in the RE, left to right.
+Unused entries in the array\(emcorresponding either to subexpressions that
+did not participate in the match at all, or to subexpressions that do not
+exist in the RE (that is, \fIi\fR\ > \fIpreg\fR\->\fIre_nsub\fR)\(emhave both
+.I rm_so
+and
+.I rm_eo
+set to \-1.
+If a subexpression participated in the match several times,
+the reported substring is the last one it matched.
+(Note, as an example in particular, that when the RE `(b*)+' matches `bbb',
+the parenthesized subexpression matches each of the three `b's and then
+an infinite number of empty strings following the last `b',
+so the reported substring is one of the empties.)
+.PP
+If REG_STARTEND is specified,
+.I pmatch
+must point to at least one
+.I regmatch_t
+(even if
+.I nmatch
+is 0 or REG_NOSUB was specified),
+to hold the input offsets for REG_STARTEND.
+Use for output is still entirely controlled by
+.IR nmatch ;
+if
+.I nmatch
+is 0 or REG_NOSUB was specified,
+the value of
+.IR pmatch [0]
+will not be changed by a successful
+.IR regexec .
+.PP
+.I Regerror
+maps a non-zero
+.I errcode
+from either
+.I regcomp
+or
+.I regexec
+to a human-readable, printable message.
+If
+.I preg
+is non-NULL,
+the error code should have arisen from use of
+the
+.I regex_t
+pointed to by
+.IR preg ,
+and if the error code came from
+.IR regcomp ,
+it should have been the result from the most recent
+.I regcomp
+using that
+.IR regex_t .
+.RI ( Regerror
+may be able to supply a more detailed message using information
+from the
+.IR regex_t .)
+.I Regerror
+places the NUL-terminated message into the buffer pointed to by
+.IR errbuf ,
+limiting the length (including the NUL) to at most
+.I errbuf_size
+bytes.
+If the whole message won't fit,
+as much of it as will fit before the terminating NUL is supplied.
+In any case,
+the returned value is the size of buffer needed to hold the whole
+message (including terminating NUL).
+If
+.I errbuf_size
+is 0,
+.I errbuf
+is ignored but the return value is still correct.
+.PP
+If the
+.I errcode
+given to
+.I regerror
+is first ORed with REG_ITOA,
+the ``message'' that results is the printable name of the error code,
+e.g. ``REG_NOMATCH'',
+rather than an explanation thereof.
+If
+.I errcode
+is REG_ATOI,
+then
+.I preg
+shall be non-NULL and the
+.I re_endp
+member of the structure it points to
+must point to the printable name of an error code;
+in this case, the result in
+.I errbuf
+is the decimal digits of
+the numeric value of the error code
+(0 if the name is not recognized).
+REG_ITOA and REG_ATOI are intended primarily as debugging facilities;
+they are extensions,
+compatible with but not specified by POSIX 1003.2,
+and should be used with
+caution in software intended to be portable to other systems.
+Be warned also that they are considered experimental and changes are possible.
+.PP
+.I Regfree
+frees any dynamically-allocated storage associated with the compiled RE
+pointed to by
+.IR preg .
+The remaining
+.I regex_t
+is no longer a valid compiled RE
+and the effect of supplying it to
+.I regexec
+or
+.I regerror
+is undefined.
+.PP
+None of these functions references global variables except for tables
+of constants;
+all are safe for use from multiple threads if the arguments are safe.
+.SH IMPLEMENTATION CHOICES
+There are a number of decisions that 1003.2 leaves up to the implementor,
+either by explicitly saying ``undefined'' or by virtue of them being
+forbidden by the RE grammar.
+This implementation treats them as follows.
+.PP
+See
+.ZR
+for a discussion of the definition of case-independent matching.
+.PP
+There is no particular limit on the length of REs,
+except insofar as memory is limited.
+Memory usage is approximately linear in RE size, and largely insensitive
+to RE complexity, except for bounded repetitions.
+See BUGS for one short RE using them
+that will run almost any system out of memory.
+.PP
+A backslashed character other than one specifically given a magic meaning
+by 1003.2 (such magic meanings occur only in obsolete [``basic''] REs)
+is taken as an ordinary character.
+.PP
+Any unmatched [ is a REG_EBRACK error.
+.PP
+Equivalence classes cannot begin or end bracket-expression ranges.
+The endpoint of one range cannot begin another.
+.PP
+RE_DUP_MAX, the limit on repetition counts in bounded repetitions, is 255.
+.PP
+A repetition operator (?, *, +, or bounds) cannot follow another
+repetition operator.
+A repetition operator cannot begin an expression or subexpression
+or follow `^' or `|'.
+.PP
+`|' cannot appear first or last in a (sub)expression or after another `|',
+i.e. an operand of `|' cannot be an empty subexpression.
+An empty parenthesized subexpression, `()', is legal and matches an
+empty (sub)string.
+An empty string is not a legal RE.
+.PP
+A `{' followed by a digit is considered the beginning of bounds for a
+bounded repetition, which must then follow the syntax for bounds.
+A `{' \fInot\fR followed by a digit is considered an ordinary character.
+.PP
+`^' and `$' beginning and ending subexpressions in obsolete (``basic'')
+REs are anchors, not ordinary characters.
+.SH SEE ALSO
+grep(1), re_format(7)
+.PP
+POSIX 1003.2, sections 2.8 (Regular Expression Notation)
+and
+B.5 (C Binding for Regular Expression Matching).
+.SH DIAGNOSTICS
+Non-zero error codes from
+.I regcomp
+and
+.I regexec
+include the following:
+.PP
+.nf
+.ta \w'REG_ECOLLATE'u+3n
+REG_NOMATCH	regexec() failed to match
+REG_BADPAT	invalid regular expression
+REG_ECOLLATE	invalid collating element
+REG_ECTYPE	invalid character class
+REG_EESCAPE	\e applied to unescapable character
+REG_ESUBREG	invalid backreference number
+REG_EBRACK	brackets [ ] not balanced
+REG_EPAREN	parentheses ( ) not balanced
+REG_EBRACE	braces { } not balanced
+REG_BADBR	invalid repetition count(s) in { }
+REG_ERANGE	invalid character range in [ ]
+REG_ESPACE	ran out of memory
+REG_BADRPT	?, *, or + operand invalid
+REG_EMPTY	empty (sub)expression
+REG_ASSERT	``can't happen''\(emyou found a bug
+REG_INVARG	invalid argument, e.g. negative-length string
+.fi
+.SH HISTORY
+Originally written by Henry Spencer.
+Altered for inclusion in the 4.4BSD distribution.
+.SH BUGS
+This is an alpha release with known defects.
+Please report problems.
+.PP
+There is one known functionality bug.
+The implementation of internationalization is incomplete:
+the locale is always assumed to be the default one of 1003.2,
+and only the collating elements etc. of that locale are available.
+.PP
+The back-reference code is subtle and doubts linger about its correctness
+in complex cases.
+.PP
+.I Regexec
+performance is poor.
+This will improve with later releases.
+.I Nmatch
+exceeding 0 is expensive;
+.I nmatch
+exceeding 1 is worse.
+.I Regexec
+is largely insensitive to RE complexity \fIexcept\fR that back
+references are massively expensive.
+RE length does matter; in particular, there is a strong speed bonus
+for keeping RE length under about 30 characters,
+with most special characters counting roughly double.
+.PP
+.I Regcomp
+implements bounded repetitions by macro expansion,
+which is costly in time and space if counts are large
+or bounded repetitions are nested.
+An RE like, say,
+`((((a{1,100}){1,100}){1,100}){1,100}){1,100}'
+will (eventually) run almost any existing machine out of swap space.
+.PP
+There are suspected problems with response to obscure error conditions.
+Notably,
+certain kinds of internal overflow,
+produced only by truly enormous REs or by multiply nested bounded repetitions,
+are probably not handled well.
+.PP
+Due to a mistake in 1003.2, things like `a)b' are legal REs because `)' is
+a special character only in the presence of a previous unmatched `('.
+This can't be fixed until the spec is fixed.
+.PP
+The standard's definition of back references is vague.
+For example, does
+`a\e(\e(b\e)*\e2\e)*d' match `abbbd'?
+Until the standard is clarified,
+behavior in such cases should not be relied on.
+.PP
+The implementation of word-boundary matching is a bit of a kludge,
+and bugs may lurk in combinations of word-boundary matching and anchoring.
diff --git a/lib/libc/regex/regex2.h b/lib/libc/regex/regex2.h
new file mode 100644
index 0000000..64b6212
--- /dev/null
+++ b/lib/libc/regex/regex2.h
@@ -0,0 +1,173 @@
+/*-
+ * Copyright (c) 1992, 1993, 1994 Henry Spencer.
+ * Copyright (c) 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Henry Spencer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)regex2.h	8.4 (Berkeley) 3/20/94
+ */
+
+/*
+ * First, the stuff that ends up in the outside-world include file
+ = typedef off_t regoff_t;
+ = typedef struct {
+ = 	int re_magic;
+ = 	size_t re_nsub;		// number of parenthesized subexpressions
+ = 	const char *re_endp;	// end pointer for REG_PEND
+ = 	struct re_guts *re_g;	// none of your business :-)
+ = } regex_t;
+ = typedef struct {
+ = 	regoff_t rm_so;		// start of match
+ = 	regoff_t rm_eo;		// end of match
+ = } regmatch_t;
+ */
+/*
+ * internals of regex_t
+ */
+#define	MAGIC1	((('r'^0200)<<8) | 'e')
+
+/*
+ * The internal representation is a *strip*, a sequence of
+ * operators ending with an endmarker.  (Some terminology etc. is a
+ * historical relic of earlier versions which used multiple strips.)
+ * Certain oddities in the representation are there to permit running
+ * the machinery backwards; in particular, any deviation from sequential
+ * flow must be marked at both its source and its destination.  Some
+ * fine points:
+ *
+ * - OPLUS_ and O_PLUS are *inside* the loop they create.
+ * - OQUEST_ and O_QUEST are *outside* the bypass they create.
+ * - OCH_ and O_CH are *outside* the multi-way branch they create, while
+ *   OOR1 and OOR2 are respectively the end and the beginning of one of
+ *   the branches.  Note that there is an implicit OOR2 following OCH_
+ *   and an implicit OOR1 preceding O_CH.
+ *
+ * In state representations, an operator's bit is on to signify a state
+ * immediately *preceding* "execution" of that operator.
+ */
+typedef unsigned long sop;	/* strip operator */
+typedef long sopno;
+#define	OPRMASK	0xf8000000
+#define	OPDMASK	0x07ffffff
+#define	OPSHIFT	((unsigned)27)
+#define	OP(n)	((n)&OPRMASK)
+#define	OPND(n)	((n)&OPDMASK)
+#define	SOP(op, opnd)	((op)|(opnd))
+/* operators			   meaning	operand			*/
+/*						(back, fwd are offsets)	*/
+#define	OEND	(1<<OPSHIFT)	/* endmarker	-			*/
+#define	OCHAR	(2<<OPSHIFT)	/* character	unsigned char		*/
+#define	OBOL	(3<<OPSHIFT)	/* left anchor	-			*/
+#define	OEOL	(4<<OPSHIFT)	/* right anchor	-			*/
+#define	OANY	(5<<OPSHIFT)	/* .		-			*/
+#define	OANYOF	(6<<OPSHIFT)	/* [...]	set number		*/
+#define	OBACK_	(7<<OPSHIFT)	/* begin \d	paren number		*/
+#define	O_BACK	(8<<OPSHIFT)	/* end \d	paren number		*/
+#define	OPLUS_	(9<<OPSHIFT)	/* + prefix	fwd to suffix		*/
+#define	O_PLUS	(10<<OPSHIFT)	/* + suffix	back to prefix		*/
+#define	OQUEST_	(11<<OPSHIFT)	/* ? prefix	fwd to suffix		*/
+#define	O_QUEST	(12<<OPSHIFT)	/* ? suffix	back to prefix		*/
+#define	OLPAREN	(13<<OPSHIFT)	/* (		fwd to )		*/
+#define	ORPAREN	(14<<OPSHIFT)	/* )		back to (		*/
+#define	OCH_	(15<<OPSHIFT)	/* begin choice	fwd to OOR2		*/
+#define	OOR1	(16<<OPSHIFT)	/* | pt. 1	back to OOR1 or OCH_	*/
+#define	OOR2	(17<<OPSHIFT)	/* | pt. 2	fwd to OOR2 or O_CH	*/
+#define	O_CH	(18<<OPSHIFT)	/* end choice	back to OOR1		*/
+#define	OBOW	(19<<OPSHIFT)	/* begin word	-			*/
+#define	OEOW	(20<<OPSHIFT)	/* end word	-			*/
+
+/*
+ * Structure for [] character-set representation.  Character sets are
+ * done as bit vectors, grouped 8 to a byte vector for compactness.
+ * The individual set therefore has both a pointer to the byte vector
+ * and a mask to pick out the relevant bit of each byte.  A hash code
+ * simplifies testing whether two sets could be identical.
+ *
+ * This will get trickier for multicharacter collating elements.  As
+ * preliminary hooks for dealing with such things, we also carry along
+ * a string of multi-character elements, and decide the size of the
+ * vectors at run time.
+ */
+typedef struct {
+	uch *ptr;		/* -> uch [csetsize] */
+	uch mask;		/* bit within array */
+	uch hash;		/* hash code */
+	size_t smultis;
+	char *multis;		/* -> char[smulti]  ab\0cd\0ef\0\0 */
+} cset;
+/* note that CHadd and CHsub are unsafe, and CHIN doesn't yield 0/1 */
+#define	CHadd(cs, c)	((cs)->ptr[(uch)(c)] |= (cs)->mask, (cs)->hash += (c))
+#define	CHsub(cs, c)	((cs)->ptr[(uch)(c)] &= ~(cs)->mask, (cs)->hash -= (c))
+#define	CHIN(cs, c)	((cs)->ptr[(uch)(c)] & (cs)->mask)
+#define	MCadd(p, cs, cp)	mcadd(p, cs, cp)	/* regcomp() internal fns */
+#define	MCsub(p, cs, cp)	mcsub(p, cs, cp)
+#define	MCin(p, cs, cp)	mcin(p, cs, cp)
+
+/* stuff for character categories */
+typedef unsigned char cat_t;
+
+/*
+ * main compiled-expression structure
+ */
+struct re_guts {
+	int magic;
+#		define	MAGIC2	((('R'^0200)<<8)|'E')
+	sop *strip;		/* malloced area for strip */
+	int csetsize;		/* number of bits in a cset vector */
+	int ncsets;		/* number of csets in use */
+	cset *sets;		/* -> cset [ncsets] */
+	uch *setbits;		/* -> uch[csetsize][ncsets/CHAR_BIT] */
+	int cflags;		/* copy of regcomp() cflags argument */
+	sopno nstates;		/* = number of sops */
+	sopno firststate;	/* the initial OEND (normally 0) */
+	sopno laststate;	/* the final OEND */
+	int iflags;		/* internal flags */
+#		define	USEBOL	01	/* used ^ */
+#		define	USEEOL	02	/* used $ */
+#		define	BAD	04	/* something wrong */
+	int nbol;		/* number of ^ used */
+	int neol;		/* number of $ used */
+	int ncategories;	/* how many character categories */
+	cat_t *categories;	/* ->catspace[-CHAR_MIN] */
+	char *must;		/* match must contain this string */
+	int mlen;		/* length of must */
+	size_t nsub;		/* copy of re_nsub */
+	int backrefs;		/* does it use back references? */
+	sopno nplus;		/* how deep does it nest +s? */
+	/* catspace must be last */
+	cat_t catspace[1];	/* actually [NC] */
+};
+
+/* misc utilities */
+#define	OUT	(CHAR_MAX+1)	/* a non-character value */
+#define	ISWORD(c)	(isalnum(c) || (c) == '_')
diff --git a/lib/libc/regex/regexec.c b/lib/libc/regex/regexec.c
new file mode 100644
index 0000000..3890b61
--- /dev/null
+++ b/lib/libc/regex/regexec.c
@@ -0,0 +1,181 @@
+/*-
+ * Copyright (c) 1992, 1993, 1994 Henry Spencer.
+ * Copyright (c) 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Henry Spencer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)regexec.c	8.3 (Berkeley) 3/20/94
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)regexec.c	8.3 (Berkeley) 3/20/94";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * the outer shell of regexec()
+ *
+ * This file includes engine.c *twice*, after muchos fiddling with the
+ * macros that code uses.  This lets the same code operate on two different
+ * representations for state sets.
+ */
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <ctype.h>
+#include <regex.h>
+
+#include "utils.h"
+#include "regex2.h"
+
+static int nope = 0;		/* for use in asserts; shuts lint up */
+
+/* macros for manipulating states, small version */
+#define	states	long
+#define	states1	states		/* for later use in regexec() decision */
+#define	CLEAR(v)	((v) = 0)
+#define	SET0(v, n)	((v) &= ~(1 << (n)))
+#define	SET1(v, n)	((v) |= 1 << (n))
+#define	ISSET(v, n)	((v) & (1 << (n)))
+#define	ASSIGN(d, s)	((d) = (s))
+#define	EQ(a, b)	((a) == (b))
+#define	STATEVARS	int dummy	/* dummy version */
+#define	STATESETUP(m, n)	/* nothing */
+#define	STATETEARDOWN(m)	/* nothing */
+#define	SETUP(v)	((v) = 0)
+#define	onestate	int
+#define	INIT(o, n)	((o) = (unsigned)1 << (n))
+#define	INC(o)	((o) <<= 1)
+#define	ISSTATEIN(v, o)	((v) & (o))
+/* some abbreviations; note that some of these know variable names! */
+/* do "if I'm here, I can also be there" etc without branches */
+#define	FWD(dst, src, n)	((dst) |= ((unsigned)(src)&(here)) << (n))
+#define	BACK(dst, src, n)	((dst) |= ((unsigned)(src)&(here)) >> (n))
+#define	ISSETBACK(v, n)	((v) & ((unsigned)here >> (n)))
+/* function names */
+#define SNAMES			/* engine.c looks after details */
+
+#include "engine.c"
+
+/* now undo things */
+#undef	states
+#undef	CLEAR
+#undef	SET0
+#undef	SET1
+#undef	ISSET
+#undef	ASSIGN
+#undef	EQ
+#undef	STATEVARS
+#undef	STATESETUP
+#undef	STATETEARDOWN
+#undef	SETUP
+#undef	onestate
+#undef	INIT
+#undef	INC
+#undef	ISSTATEIN
+#undef	FWD
+#undef	BACK
+#undef	ISSETBACK
+#undef	SNAMES
+
+/* macros for manipulating states, large version */
+#define	states	char *
+#define	CLEAR(v)	memset(v, 0, m->g->nstates)
+#define	SET0(v, n)	((v)[n] = 0)
+#define	SET1(v, n)	((v)[n] = 1)
+#define	ISSET(v, n)	((v)[n])
+#define	ASSIGN(d, s)	memcpy(d, s, m->g->nstates)
+#define	EQ(a, b)	(memcmp(a, b, m->g->nstates) == 0)
+#define	STATEVARS	int vn; char *space
+#define	STATESETUP(m, nv)	{ (m)->space = malloc((nv)*(m)->g->nstates); \
+				if ((m)->space == NULL) return(REG_ESPACE); \
+				(m)->vn = 0; }
+#define	STATETEARDOWN(m)	{ free((m)->space); }
+#define	SETUP(v)	((v) = &m->space[m->vn++ * m->g->nstates])
+#define	onestate	int
+#define	INIT(o, n)	((o) = (n))
+#define	INC(o)	((o)++)
+#define	ISSTATEIN(v, o)	((v)[o])
+/* some abbreviations; note that some of these know variable names! */
+/* do "if I'm here, I can also be there" etc without branches */
+#define	FWD(dst, src, n)	((dst)[here+(n)] |= (src)[here])
+#define	BACK(dst, src, n)	((dst)[here-(n)] |= (src)[here])
+#define	ISSETBACK(v, n)	((v)[here - (n)])
+/* function names */
+#define	LNAMES			/* flag */
+
+#include "engine.c"
+
+/*
+ - regexec - interface for matching
+ = extern int regexec(const regex_t *, const char *, size_t, \
+ =					regmatch_t [], int);
+ = #define	REG_NOTBOL	00001
+ = #define	REG_NOTEOL	00002
+ = #define	REG_STARTEND	00004
+ = #define	REG_TRACE	00400	// tracing of execution
+ = #define	REG_LARGE	01000	// force large representation
+ = #define	REG_BACKR	02000	// force use of backref code
+ *
+ * We put this here so we can exploit knowledge of the state representation
+ * when choosing which matcher to call.  Also, by this point the matchers
+ * have been prototyped.
+ */
+int				/* 0 success, REG_NOMATCH failure */
+regexec(preg, string, nmatch, pmatch, eflags)
+const regex_t *preg;
+const char *string;
+size_t nmatch;
+regmatch_t pmatch[];
+int eflags;
+{
+	register struct re_guts *g = preg->re_g;
+#ifdef REDEBUG
+#	define	GOODFLAGS(f)	(f)
+#else
+#	define	GOODFLAGS(f)	((f)&(REG_NOTBOL|REG_NOTEOL|REG_STARTEND))
+#endif
+
+	if (preg->re_magic != MAGIC1 || g->magic != MAGIC2)
+		return(REG_BADPAT);
+	assert(!(g->iflags&BAD));
+	if (g->iflags&BAD)		/* backstop for no-debug case */
+		return(REG_BADPAT);
+	eflags = GOODFLAGS(eflags);
+
+	if (g->nstates <= CHAR_BIT*sizeof(states1) && !(eflags&REG_LARGE))
+		return(smatcher(g, (char *)string, nmatch, pmatch, eflags));
+	else
+		return(lmatcher(g, (char *)string, nmatch, pmatch, eflags));
+}
diff --git a/lib/libc/regex/regfree.c b/lib/libc/regex/regfree.c
new file mode 100644
index 0000000..580fb75
--- /dev/null
+++ b/lib/libc/regex/regfree.c
@@ -0,0 +1,80 @@
+/*-
+ * Copyright (c) 1992, 1993, 1994 Henry Spencer.
+ * Copyright (c) 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Henry Spencer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)regfree.c	8.3 (Berkeley) 3/20/94
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)regfree.c	8.3 (Berkeley) 3/20/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <regex.h>
+
+#include "utils.h"
+#include "regex2.h"
+
+/*
+ - regfree - free everything
+ = extern void regfree(regex_t *);
+ */
+void
+regfree(preg)
+regex_t *preg;
+{
+	register struct re_guts *g;
+
+	if (preg->re_magic != MAGIC1)	/* oops */
+		return;			/* nice to complain, but hard */
+
+	g = preg->re_g;
+	if (g == NULL || g->magic != MAGIC2)	/* oops again */
+		return;
+	preg->re_magic = 0;		/* mark it invalid */
+	g->magic = 0;			/* mark it invalid */
+
+	if (g->strip != NULL)
+		free((char *)g->strip);
+	if (g->sets != NULL)
+		free((char *)g->sets);
+	if (g->setbits != NULL)
+		free((char *)g->setbits);
+	if (g->must != NULL)
+		free(g->must);
+	free((char *)g);
+}
diff --git a/lib/libc/regex/utils.h b/lib/libc/regex/utils.h
new file mode 100644
index 0000000..d804d8d
--- /dev/null
+++ b/lib/libc/regex/utils.h
@@ -0,0 +1,57 @@
+/*-
+ * Copyright (c) 1992, 1993, 1994 Henry Spencer.
+ * Copyright (c) 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Henry Spencer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)utils.h	8.3 (Berkeley) 3/20/94
+ */
+
+/* utility definitions */
+#define	DUPMAX		_POSIX2_RE_DUP_MAX	/* xxx is this right? */
+#define	INFINITY	(DUPMAX + 1)
+#define	NC		(CHAR_MAX - CHAR_MIN + 1)
+typedef unsigned char uch;
+
+/* switch off assertions (if not already off) if no REDEBUG */
+#ifndef REDEBUG
+#ifndef NDEBUG
+#define	NDEBUG	/* no assertions please */
+#endif
+#endif
+#include <assert.h>
+
+/* for old systems with bcopy() but no memmove() */
+#ifdef USEBCOPY
+#define	memmove(d, s, c)	bcopy(s, d, c)
+#endif
diff --git a/lib/libc/rpc/DISCLAIMER b/lib/libc/rpc/DISCLAIMER
new file mode 100644
index 0000000..1a66d5f
--- /dev/null
+++ b/lib/libc/rpc/DISCLAIMER
@@ -0,0 +1,28 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ * 
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ * 
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ * 
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ * 
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ * 
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
diff --git a/lib/libc/rpc/Makefile.inc b/lib/libc/rpc/Makefile.inc
new file mode 100644
index 0000000..43f0f39
--- /dev/null
+++ b/lib/libc/rpc/Makefile.inc
@@ -0,0 +1,23 @@
+#	@(#)Makefile	5.11 (Berkeley) 9/6/90
+
+.PATH: ${.CURDIR}/rpc ${.CURDIR}/.
+SRCS+=	auth_none.c auth_unix.c  authunix_prot.c bindresvport.c \
+	clnt_generic.c clnt_perror.c clnt_raw.c clnt_simple.c clnt_tcp.c \
+	clnt_udp.c rpc_dtablesize.c get_myaddress.c getrpcent.c getrpcport.c \
+	pmap_clnt.c pmap_getmaps.c pmap_getport.c pmap_prot.c \
+	pmap_prot2.c pmap_rmt.c rpc_prot.c rpc_commondata.c rpc_callmsg.c \
+	svc.c svc_auth.c svc_auth_unix.c svc_raw.c svc_run.c svc_simple.c \
+	svc_tcp.c svc_udp.c
+
+#
+# XXX -- rstat.1 and rstat_svc.8 shouldn't really be here
+#        but there's no rstat command, don't know why, so I'm
+#        leaving them here in case they're needed sometime later.
+# Paul.
+#
+
+# MAN1+= rpc/rstat.1
+MAN3+= rpc/bindresvport.3 rpc/getrpcent.3 rpc/getrpcport.3 rpc/rpc.3
+MAN5+= rpc/rpc.5
+MAN8+= rpc/rstat_svc.8
+
diff --git a/lib/libc/rpc/PSD.doc/nfs.rfc.ms b/lib/libc/rpc/PSD.doc/nfs.rfc.ms
new file mode 100644
index 0000000..0c9a899
--- /dev/null
+++ b/lib/libc/rpc/PSD.doc/nfs.rfc.ms
@@ -0,0 +1,1372 @@
+.\"
+.\" Must use  --  tbl  --  with this one
+.\"
+.\" @(#)nfs.rfc.ms	2.2 88/08/05 4.0 RPCSRC
+.de BT
+.if \\n%=1 .tl ''- % -''
+..
+.ND
+.\" prevent excess underlining in nroff
+.if n .fp 2 R
+.OH 'Network File System: Version 2 Protocol Specification''Page %'
+.EH 'Page %''Network File System: Version 2 Protocol Specification'
+.if \\n%=1 .bp
+.SH
+\&Network File System: Version 2 Protocol Specification
+.IX NFS "" "" "" PAGE MAJOR
+.IX "Network File System" "" "" "" PAGE MAJOR
+.IX NFS "version-2 protocol specification"
+.IX "Network File System" "version-2 protocol specification"
+.LP
+.NH 0
+\&Status of this Standard
+.LP
+Note: This document specifies a protocol that Sun Microsystems, Inc.,
+and others are using.  It specifies it in standard ARPA RFC form.
+.NH 1
+\&Introduction
+.IX NFS introduction
+.LP
+The Sun Network Filesystem (NFS) protocol provides transparent remote 
+access to shared filesystems over local area networks.  The NFS 
+protocol is designed to be machine, operating system, network architecture, 
+and transport protocol independent.  This independence is 
+achieved through the use of Remote Procedure Call (RPC) primitives 
+built on top of an External Data Representation (XDR).  Implementations
+exist for a variety of machines, from personal computers to
+supercomputers.
+.LP
+The supporting mount protocol allows the server to hand out remote
+access privileges to a restricted set of clients.  It performs the
+operating system-specific functions that allow, for example, to
+attach remote directory trees to some local file system.
+.NH 2
+\&Remote Procedure Call
+.IX "Remote Procedure Call"
+.LP
+Sun's remote procedure call specification provides a procedure-
+oriented interface to remote services.  Each server supplies a
+program that is a set of procedures.  NFS is one such "program".
+The combination of host address, program number, and procedure
+number specifies one remote service procedure.  RPC does not depend
+on services provided by specific protocols, so it can be used with
+any underlying transport protocol.  See the
+.I "Remote Procedure Calls: Protocol Specification"
+chapter of this manual.
+.NH 2
+\&External Data Representation
+.IX "External Data Representation"
+.LP
+The External Data Representation (XDR) standard provides a common
+way of representing a set of data types over a network.  
+The NFS
+Protocol Specification is written using the RPC data description
+language.  
+For more information, see the
+.I " External Data Representation Standard: Protocol Specification."  
+Sun provides implementations of XDR and
+RPC,  but NFS does not require their use.  Any software that
+provides equivalent functionality can be used, and if the encoding
+is exactly the same it can interoperate with other implementations
+of NFS.
+.NH 2
+\&Stateless Servers
+.IX "stateless servers"
+.IX servers stateless
+.LP
+The NFS protocol is stateless.  That is, a server does not need to
+maintain any extra state information about any of its clients in
+order to function correctly.  Stateless servers have a distinct
+advantage over stateful servers in the event of a failure.  With
+stateless servers, a client need only retry a request until the
+server responds; it does not even need to know that the server has
+crashed, or the network temporarily went down.  The client of a
+stateful server, on the other hand, needs to either detect a server
+crash and rebuild the server's state when it comes back up, or
+cause client operations to fail.
+.LP
+This may not sound like an important issue, but it affects the
+protocol in some unexpected ways.  We feel that it is worth a bit
+of extra complexity in the protocol to be able to write very simple
+servers that do not require fancy crash recovery.
+.LP
+On the other hand, NFS deals with objects such as files and
+directories that inherently have state -- what good would a file be
+if it did not keep its contents intact?  The goal is to not
+introduce any extra state in the protocol itself.  Another way to
+simplify recovery is by making operations "idempotent" whenever
+possible (so that they can potentially be repeated).
+.NH 1
+\&NFS Protocol Definition
+.IX NFS "protocol definition"
+.IX NFS protocol
+.LP
+Servers have been known to change over time, and so can the
+protocol that they use. So RPC provides a version number with each
+RPC request. This RFC describes version two of the NFS protocol.
+Even in the second version, there are various obsolete procedures
+and parameters, which will be removed in later versions. An RFC
+for version three of the NFS protocol is currently under
+preparation.
+.NH 2
+\&File System Model
+.IX filesystem model
+.LP
+NFS assumes a file system that is hierarchical, with directories as
+all but the bottom-level files.  Each entry in a directory (file,
+directory, device, etc.)  has a string name.  Different operating
+systems may have restrictions on the depth of the tree or the names
+used, as well as using different syntax to represent the "pathname",
+which is the concatenation of all the "components" (directory and
+file names) in the name.  A "file system" is a tree on a single
+server (usually a single disk or physical partition) with a specified
+"root".  Some operating systems provide a "mount" operation to make
+all file systems appear as a single tree, while others maintain a
+"forest" of file systems.  Files are unstructured streams of
+uninterpreted bytes.  Version 3 of NFS uses a slightly more general
+file system model.
+.LP
+NFS looks up one component of a pathname at a time.  It may not be
+obvious why it does not just take the whole pathname, traipse down
+the directories, and return a file handle when it is done.  There are
+several good reasons not to do this.  First, pathnames need
+separators between the directory components, and different operating
+systems use different separators.  We could define a Network Standard
+Pathname Representation, but then every pathname would have to be
+parsed and converted at each end.  Other issues are discussed in
+\fINFS Implementation Issues\fP below.
+.LP
+Although files and directories are similar objects in many ways,
+different procedures are used to read directories and files.  This
+provides a network standard format for representing directories.  The
+same argument as above could have been used to justify a procedure
+that returns only one directory entry per call.  The problem is
+efficiency.  Directories can contain many entries, and a remote call
+to return each would be just too slow.
+.NH 2
+\&RPC Information
+.IX NFS "RPC information"
+.IP \fIAuthentication\fP
+The   NFS  service uses 
+.I AUTH_UNIX ,
+.I AUTH_DES ,
+or 
+.I AUTH_SHORT 
+style
+authentication, except in  the  NULL procedure where   
+.I AUTH_NONE 
+is also allowed.
+.IP "\fITransport Protocols\fP"
+NFS currently is supported on UDP/IP only.  
+.IP "\fIPort Number\fP"
+The NFS protocol currently uses the UDP port number 2049.  This is
+not an officially assigned port, so  later versions of the protocol
+use the \*QPortmapping\*U facility of RPC.
+.NH 2
+\&Sizes of XDR Structures
+.IX "XDR structure sizes"
+.LP
+These are the sizes, given in decimal bytes, of various XDR
+structures used in the protocol:
+.DS
+/* \fIThe maximum number of bytes of data in a READ or WRITE request\fP  */
+const MAXDATA = 8192;
+
+/* \fIThe maximum number of bytes in a pathname argument\fP */
+const MAXPATHLEN = 1024;
+
+/* \fIThe maximum number of bytes in a file name argument\fP */
+const MAXNAMLEN = 255;
+
+/* \fIThe size in bytes of the opaque "cookie" passed by READDIR\fP */
+const COOKIESIZE  = 4;
+
+/* \fIThe size in bytes of the opaque file handle\fP */
+const FHSIZE = 32;
+.DE
+.NH 2
+\&Basic Data Types
+.IX "NFS data types"
+.IX NFS "basic data types"
+.LP
+The following XDR  definitions are basic  structures and types used
+in other structures described further on.
+.KS
+.NH 3
+\&stat
+.IX "NFS data types" stat "" \fIstat\fP
+.DS
+enum stat {
+	NFS_OK = 0,
+	NFSERR_PERM=1,
+	NFSERR_NOENT=2,
+	NFSERR_IO=5,
+	NFSERR_NXIO=6,
+	NFSERR_ACCES=13,
+	NFSERR_EXIST=17,
+	NFSERR_NODEV=19,
+	NFSERR_NOTDIR=20,
+	NFSERR_ISDIR=21,
+	NFSERR_FBIG=27,
+	NFSERR_NOSPC=28,
+	NFSERR_ROFS=30,
+	NFSERR_NAMETOOLONG=63,
+	NFSERR_NOTEMPTY=66,
+	NFSERR_DQUOT=69,
+	NFSERR_STALE=70,
+	NFSERR_WFLUSH=99
+};
+.DE
+.KE
+.LP
+The 
+.I stat 
+type  is returned with every  procedure's  results.   A
+value of 
+.I NFS_OK 
+indicates that the  call completed successfully and
+the  results are  valid.  The  other  values indicate  some kind of
+error  occurred on the  server  side  during the servicing   of the
+procedure.  The error values are derived from UNIX error numbers.
+.IP \fBNFSERR_PERM\fP:
+Not owner.  The caller does not have correct ownership
+to perform the requested operation.
+.IP \fBNFSERR_NOENT\fP:
+No such file or directory.    The file or directory
+specified does not exist.
+.IP \fBNFSERR_IO\fP:
+Some sort of hard  error occurred when the operation was
+in progress.  This could be a disk error, for example.
+.IP \fBNFSERR_NXIO\fP:
+No such device or address.
+.IP \fBNFSERR_ACCES\fP:
+Permission  denied.  The  caller does  not  have the
+correct permission to perform the requested operation.
+.IP \fBNFSERR_EXIST\fP:
+File exists.  The file specified already exists.
+.IP \fBNFSERR_NODEV\fP:
+No such device.
+.IP \fBNFSERR_NOTDIR\fP:
+Not   a  directory.    The  caller  specified   a
+non-directory in a directory operation.
+.IP \fBNFSERR_ISDIR\fP:
+Is a directory.  The caller specified  a directory in
+a non- directory operation.
+.IP \fBNFSERR_FBIG\fP:
+File too large.   The  operation caused a file to grow
+beyond the server's limit.
+.IP \fBNFSERR_NOSPC\fP:
+No space left on  device.   The operation caused the
+server's filesystem to reach its limit.
+.IP \fBNFSERR_ROFS\fP:
+Read-only filesystem.  Write attempted on a read-only filesystem.
+.IP \fBNFSERR_NAMETOOLONG\fP:
+File name   too   long.  The file  name  in  an operation was too long.
+.IP \fBNFSERR_NOTEMPTY\fP:
+Directory   not empty.  Attempted  to   remove  a
+directory that was not empty.
+.IP \fBNFSERR_DQUOT\fP:
+Disk quota exceeded.  The client's disk  quota on the
+server has been exceeded.
+.IP \fBNFSERR_STALE\fP:
+The  "fhandle" given in   the arguments was invalid.
+That is, the file referred to by that file handle no longer exists,
+or access to it has been revoked.
+.IP \fBNFSERR_WFLUSH\fP:
+The server's  write cache  used  in the
+.I WRITECACHE 
+call got flushed to disk.
+.LP
+.KS
+.NH 3
+\&ftype
+.IX "NFS data types" ftype "" \fIftype\fP
+.DS
+enum ftype {
+	NFNON = 0,
+	NFREG = 1,
+	NFDIR = 2,
+	NFBLK = 3,
+	NFCHR = 4,
+	NFLNK = 5
+};
+.DE
+.KE
+The enumeration
+.I ftype 
+gives the type of a file.  The type 
+.I NFNON 
+indicates a non-file,
+.I NFREG 
+is a regular file, 
+.I NFDIR 
+is a directory,
+.I NFBLK 
+is a block-special device, 
+.I NFCHR 
+is a character-special device, and
+.I NFLNK 
+is a symbolic link.
+.KS
+.NH 3
+\&fhandle
+.IX "NFS data types" fhandle "" \fIfhandle\fP
+.DS
+typedef opaque fhandle[FHSIZE];
+.DE
+.KE
+The
+.I fhandle 
+is the file handle passed between the server and the client.  
+All file operations are done using file handles to refer to a file or 
+directory.  The file handle can contain whatever information the server
+needs to distinguish an individual file.
+.KS
+.NH 3
+\&timeval
+.IX "NFS data types" timeval "" \fItimeval\fP
+.DS
+struct timeval {
+	unsigned int seconds;
+	unsigned int useconds;
+};
+.DE
+.KE
+The 
+.I timeval
+structure is the number of seconds and microseconds 
+since midnight January 1, 1970, Greenwich Mean Time.  It is used to 
+pass time and date information.
+.KS
+.NH 3
+\&fattr
+.IX "NFS data types" fattr "" \fIfattr\fP
+.DS
+struct fattr {
+	ftype        type;
+	unsigned int mode;
+	unsigned int nlink;
+	unsigned int uid;
+	unsigned int gid;
+	unsigned int size;
+	unsigned int blocksize;
+	unsigned int rdev;
+	unsigned int blocks;
+	unsigned int fsid;
+	unsigned int fileid;
+	timeval      atime;
+	timeval      mtime;
+	timeval      ctime;
+};
+.DE
+.KE
+The
+.I fattr 
+structure contains the attributes of a file; "type" is the type of
+the file; "nlink" is the number of hard links to the file (the number
+of different names for the same file); "uid" is the user
+identification number of the owner of the file; "gid" is the group
+identification number of the group of the file; "size" is the size in
+bytes of the file; "blocksize" is the size in bytes of a block of the
+file; "rdev" is the device number of the file if it is type
+.I NFCHR 
+or
+.I NFBLK ;
+"blocks" is the number of blocks the file takes up on disk; "fsid" is
+the file system identifier for the filesystem containing the file;
+"fileid" is a number that uniquely identifies the file within its
+filesystem; "atime" is the time when the file was last accessed for
+either read or write; "mtime" is the time when the file data was last
+modified (written); and "ctime" is the time when the status of the
+file was last changed.  Writing to the file also changes "ctime" if
+the size of the file changes.
+.LP
+"mode" is the access mode encoded as a set of bits.  Notice that the
+file type is specified both in the mode bits and in the file type.
+This is really a bug in the protocol and will be fixed in future
+versions.  The descriptions given below specify the bit positions
+using octal numbers.
+.TS
+box tab (&) ;
+cfI cfI
+lfL l .
+Bit&Description
+_
+0040000&This is a directory; "type" field should be NFDIR.
+0020000&This is a character special file; "type" field should be NFCHR. 
+0060000&This is a block special file; "type" field should be NFBLK. 
+0100000&This is a regular file; "type" field should be NFREG.
+0120000&This is a symbolic link file;  "type" field should be NFLNK. 
+0140000&This is a named socket; "type" field should be NFNON.
+0004000&Set user id on execution.
+0002000&Set group id on execution.
+0001000&Save swapped text even after use.
+0000400&Read permission for owner.
+0000200&Write permission for owner.
+0000100&Execute and search permission for owner.
+0000040&Read permission for group.
+0000020&Write permission for group.
+0000010&Execute and search permission for group.
+0000004&Read permission for others.
+0000002&Write permission for others.
+0000001&Execute and search permission for others.
+.TE
+.KS
+Notes:
+.IP 
+The bits are  the same as the mode   bits returned  by  the
+.I stat(2) 
+system call in the UNIX system.  The file  type is  specified  both in
+the mode  bits  and in  the file type.   This   is fixed  in future
+versions.
+.IP
+The "rdev" field in the attributes structure is an operating system
+specific device specifier.  It  will be  removed and generalized in
+the next revision of the protocol.
+.KE
+.LP
+.KS
+.NH 3
+\&sattr
+.IX "NFS data types" sattr "" \fIsattr\fP
+.DS
+struct sattr {
+	unsigned int mode;
+	unsigned int uid;
+	unsigned int gid;
+	unsigned int size;
+	timeval      atime;
+	timeval      mtime;
+};
+.DE
+.KE
+The 
+.I sattr
+structure contains the file attributes which can be set
+from the client.  The fields are the same as for  
+.I fattr 
+above.  A "size" of zero  means the file should be  truncated.
+A value of -1 indicates a field that should be ignored.
+.LP
+.KS
+.NH 3
+\&filename
+.IX "NFS data types" filename "" \fIfilename\fP
+.DS
+typedef string filename<MAXNAMLEN>;
+.DE
+.KE
+The type
+.I filename 
+is used for  passing file names  or  pathname components.
+.LP
+.KS
+.NH 3
+\&path
+.IX "NFS data types" path "" \fIpath\fP
+.DS
+typedef string path<MAXPATHLEN>;
+.DE
+.KE
+The type
+.I path 
+is a pathname.  The server considers it as a string
+with no internal structure,  but to the client  it is the name of a
+node in a filesystem tree.
+.LP
+.KS
+.NH 3
+\&attrstat
+.IX "NFS data types" attrstat "" \fIattrstat\fP
+.DS
+union attrstat switch (stat status) {
+	case NFS_OK:
+		fattr attributes;
+	default:
+		void;
+};
+.DE
+.KE
+The 
+.I attrstat 
+structure is a common procedure result.  It contains
+a  "status" and,  if  the call   succeeded,   it also contains  the
+attributes of the file on which the operation was done.
+.LP
+.KS
+.NH 3
+\&diropargs
+.IX "NFS data types" diropargs "" \fIdiropargs\fP
+.DS
+struct diropargs {
+	fhandle  dir;
+	filename name;
+};
+.DE
+.KE
+The  
+.I diropargs 
+structure is used  in  directory  operations.  The
+"fhandle" "dir" is the directory in  which to find the file "name".
+A directory operation is one in which the directory is affected.
+.LP
+.KS
+.NH 3
+\&diropres
+.IX "NFS data types" diropres "" \fIdiropres\fP
+.DS
+union diropres switch (stat status) {
+	case NFS_OK:
+		struct {
+			fhandle file;
+			fattr   attributes;
+		} diropok;
+	default:
+		void;
+};
+.DE
+.KE
+The results of a directory operation  are returned  in a 
+.I diropres 
+structure.  If the call succeeded, a new file handle "file" and the
+"attributes" associated with that file are  returned along with the
+"status".
+.NH 2
+\&Server Procedures
+.IX "NFS server procedures" "" "" "" PAGE MAJOR
+.LP
+The  protocol definition  is given as   a  set  of  procedures with
+arguments  and results defined using the   RPC  language.   A brief
+description of the function of each procedure should provide enough
+information to allow implementation.
+.LP
+All of  the procedures  in   the NFS  protocol  are assumed  to  be
+synchronous.   When a procedure  returns to the  client, the client
+can assume that the operation has completed and any data associated
+with the request is  now on stable storage.  For  example, a client
+.I WRITE 
+request   may  cause  the   server  to  update  data  blocks,
+filesystem information blocks (such as indirect  blocks),  and file
+attribute  information (size  and  modify  times).  When  the 
+.I WRITE 
+returns to the client, it can assume  that the write  is safe, even
+in case of  a server  crash, and  it can discard the  data written.
+This is a very important part  of the statelessness  of the server.
+If the server waited to flush data from remote requests, the client
+would have to  save those requests so that  it could resend them in
+case of a server crash.
+.ie t .DS
+.el .DS L
+
+.ft I
+/*
+* Remote file service routines
+*/
+.ft CW
+program NFS_PROGRAM {
+	version NFS_VERSION {
+		void        NFSPROC_NULL(void)              = 0;
+		attrstat    NFSPROC_GETATTR(fhandle)        = 1;
+		attrstat    NFSPROC_SETATTR(sattrargs)      = 2;
+		void        NFSPROC_ROOT(void)              = 3;
+		diropres    NFSPROC_LOOKUP(diropargs)       = 4;
+		readlinkres NFSPROC_READLINK(fhandle)       = 5;
+		readres     NFSPROC_READ(readargs)          = 6;
+		void        NFSPROC_WRITECACHE(void)        = 7;
+		attrstat    NFSPROC_WRITE(writeargs)        = 8;
+		diropres    NFSPROC_CREATE(createargs)      = 9;
+		stat        NFSPROC_REMOVE(diropargs)       = 10;
+		stat        NFSPROC_RENAME(renameargs)      = 11;
+		stat        NFSPROC_LINK(linkargs)          = 12;
+		stat        NFSPROC_SYMLINK(symlinkargs)    = 13;
+		diropres    NFSPROC_MKDIR(createargs)       = 14;
+		stat        NFSPROC_RMDIR(diropargs)        = 15;
+		readdirres  NFSPROC_READDIR(readdirargs)    = 16;
+		statfsres   NFSPROC_STATFS(fhandle)         = 17;
+	} = 2;
+} = 100003;
+.DE
+.KS
+.NH 3
+\&Do Nothing
+.IX "NFS server procedures" NFSPROC_NULL() "" \fINFSPROC_NULL()\fP
+.DS
+void 
+NFSPROC_NULL(void) = 0;
+.DE
+.KE
+This procedure does no work.   It is made available  in  all RPC
+services to allow server response testing and timing.
+.KS
+.NH 3
+\&Get File Attributes
+.IX "NFS server procedures" NFSPROC_GETATTR() "" \fINFSPROC_GETATTR()\fP
+.DS
+attrstat 
+NFSPROC_GETATTR (fhandle) = 1;
+.DE
+.KE
+If the reply  status is 
+.I NFS_OK ,
+then  the reply attributes contains
+the attributes for the file given by the input fhandle.
+.KS
+.NH 3
+\&Set File Attributes
+.IX "NFS server procedures" NFSPROC_SETATTR() "" \fINFSPROC_SETATTR()\fP
+.DS
+struct sattrargs {
+	fhandle file;
+	sattr attributes;
+	};
+
+attrstat
+NFSPROC_SETATTR (sattrargs) = 2;
+.DE
+.KE
+The  "attributes" argument  contains fields which are either  -1 or
+are  the  new value for  the  attributes of  "file".   If the reply
+status is 
+.I NFS_OK ,
+then the  reply attributes have the attributes of
+the file after the "SETATTR" operation has completed.
+.LP
+Note: The use of -1 to indicate an unused field in "attributes" is
+changed in the next version of the protocol.
+.KS
+.NH 3
+\&Get Filesystem Root
+.IX "NFS server procedures" NFSPROC_ROOT "" \fINFSPROC_ROOT\fP
+.DS
+void 
+NFSPROC_ROOT(void) = 3;
+.DE
+.KE
+Obsolete.  This procedure  is no longer used   because  finding the
+root file handle of a filesystem requires moving  pathnames between
+client  and server.  To  do  this right we would  have  to define a
+network standard representation of pathnames.  Instead, the
+function  of  looking up  the   root  file handle  is  done  by the
+.I MNTPROC_MNT() 
+procedure.    (See the
+.I "Mount Protocol Definition"
+later in this chapter for details).
+.KS
+.NH 3
+\&Look Up File Name
+.IX "NFS server procedures" NFSPROC_LOOKUP() "" \fINFSPROC_LOOKUP()\fP
+.DS
+diropres
+NFSPROC_LOOKUP(diropargs) = 4;
+.DE
+.KE
+If  the reply "status"  is 
+.I NFS_OK ,
+then the reply  "file" and reply
+"attributes" are the file handle and attributes for the file "name"
+in the directory given by "dir" in the argument.
+.KS
+.NH 3
+\&Read From Symbolic Link
+.IX "NFS server procedures" NFSPROC_READLINK() "" \fINFSPROC_READLINK()\fP
+.DS
+union readlinkres switch (stat status) {
+	case NFS_OK:
+		path data;
+	default:
+		void;
+};
+
+readlinkres
+NFSPROC_READLINK(fhandle) = 5;
+.DE
+.KE
+If "status" has the value 
+.I NFS_OK ,
+then the reply "data" is the data in 
+the symbolic link given by the file referred to by the fhandle argument.
+.LP
+Note:  since   NFS always  parses pathnames    on the  client, the
+pathname in  a symbolic  link may  mean something  different (or be
+meaningless) on a different client or on the server if  a different
+pathname syntax is used.
+.KS
+.NH 3
+\&Read From File
+.IX "NFS server procedures" NFSPROC_READ "" \fINFSPROC_READ\fP
+.DS
+struct readargs {
+	fhandle file;
+	unsigned offset;
+	unsigned count;
+	unsigned totalcount;
+};
+
+union readres switch (stat status) {
+	case NFS_OK:
+		fattr attributes;
+		opaque data<NFS_MAXDATA>;
+	default:
+		void;
+};
+
+readres
+NFSPROC_READ(readargs) = 6;
+.DE
+.KE
+Returns  up  to  "count" bytes of   "data" from  the file  given by
+"file", starting at "offset" bytes from  the beginning of the file.
+The first byte of the file is  at offset zero.  The file attributes
+after the read takes place are returned in "attributes".
+.LP
+Note: The  argument "totalcount" is  unused, and is removed in the
+next protocol revision.
+.KS
+.NH 3
+\&Write to Cache
+.IX "NFS server procedures" NFSPROC_WRITECACHE() "" \fINFSPROC_WRITECACHE()\fP
+.DS
+void
+NFSPROC_WRITECACHE(void) = 7;
+.DE
+.KE
+To be used in the next protocol revision.
+.KS
+.NH 3
+\&Write to File
+.IX "NFS server procedures" NFSPROC_WRITE() "" \fINFSPROC_WRITE()\fP
+.DS
+struct writeargs {
+	fhandle file;          
+	unsigned beginoffset;  
+	unsigned offset;       
+	unsigned totalcount;   
+	opaque data<NFS_MAXDATA>;
+};
+
+attrstat	
+NFSPROC_WRITE(writeargs) = 8;
+.DE
+.KE
+Writes   "data" beginning  "offset"  bytes  from the  beginning  of
+"file".  The first byte  of  the file is at  offset  zero.  If  the
+reply "status" is NFS_OK, then  the reply "attributes" contains the
+attributes  of the file after the  write has  completed.  The write
+operation is atomic.  Data from this  call to 
+.I WRITE 
+will not be mixed with data from another client's calls.
+.LP
+Note: The arguments "beginoffset" and "totalcount" are ignored and
+are removed in the next protocol revision.
+.KS
+.NH 3
+\&Create File
+.IX "NFS server procedures" NFSPROC_CREATE() "" \fINFSPROC_CREATE()\fP
+.DS
+struct createargs {
+	diropargs where;
+	sattr attributes;
+};
+
+diropres
+NFSPROC_CREATE(createargs) = 9;
+.DE
+.KE
+The file "name" is created  in the directory given  by "dir".   The
+initial  attributes of the  new file  are given by "attributes".  A
+reply "status"  of NFS_OK indicates that the  file was created, and
+reply "file"   and   reply "attributes"  are    its file handle and
+attributes.   Any  other reply  "status"  means that  the operation
+failed and no file was created.
+.LP
+Note: This  routine should pass  an exclusive create flag, meaning
+"create the file only if it is not already there".
+.KS
+.NH 3
+\&Remove File
+.IX "NFS server procedures" NFSPROC_REMOVE() "" \fINFSPROC_REMOVE()\fP
+.DS
+stat
+NFSPROC_REMOVE(diropargs) = 10;
+.DE
+.KE
+The file "name" is  removed from the directory  given by "dir".   A
+reply of NFS_OK means the directory entry was removed.
+.LP
+Note: possibly non-idempotent operation.
+.KS
+.NH 3
+\&Rename File
+.IX "NFS server procedures" NFSPROC_RENAME() "" \fINFSPROC_RENAME()\fP
+.DS
+struct renameargs {
+	diropargs from;	
+	diropargs to;
+};
+
+stat
+NFSPROC_RENAME(renameargs) = 11;
+.DE
+.KE
+The existing file "from.name" in  the directory given by "from.dir"
+is renamed to "to.name" in the directory given by "to.dir".  If the
+reply  is 
+.I NFS_OK ,
+the file was  renamed.  The  
+RENAME  
+operation is
+atomic on the server; it cannot be interrupted in the middle.
+.LP
+Note: possibly non-idempotent operation.
+.KS
+.NH 3
+\&Create Link to File
+.IX "NFS server procedures" NFSPROC_LINK() "" \fINFSPROC_LINK()\fP
+.DS
+struct linkargs {
+	fhandle from;
+	diropargs to;
+};
+
+stat
+NFSPROC_LINK(linkargs) = 12;
+.DE
+.KE
+Creates the  file "to.name"  in the directory  given   by "to.dir",
+which is a hard link to the existing file given  by "from".  If the
+return value is 
+.I NFS_OK ,
+a link was created.  Any other return value
+indicates an error, and the link was not created.
+.LP
+A hard link should have the property that changes  to either of the
+linked files are reflected in both files.  When a hard link is made
+to a  file, the attributes  for  the file should  have  a value for
+"nlink" that is one greater than the value before the link.
+.LP
+Note: possibly non-idempotent operation.
+.KS
+.NH 3
+\&Create Symbolic Link
+.IX "NFS server procedures" NFSPROC_SYMLINK() "" \fINFSPROC_SYMLINK()\fP
+.DS
+struct symlinkargs {
+	diropargs from;
+	path to;
+	sattr attributes;
+};
+
+stat
+NFSPROC_SYMLINK(symlinkargs) = 13;
+.DE
+.KE
+Creates the  file "from.name" with  ftype  
+.I NFLNK 
+in  the  directory
+given by "from.dir".   The new file contains  the pathname "to" and
+has initial attributes given by "attributes".  If  the return value
+is 
+.I NFS_OK ,
+a link was created.  Any other return value indicates an
+error, and the link was not created.
+.LP
+A symbolic  link is  a pointer to another file.   The name given in
+"to" is  not interpreted by  the server, only stored in  the  newly
+created file.  When the client references a file that is a symbolic
+link, the contents of the symbolic  link are normally transparently
+reinterpreted  as a pathname  to substitute.   A 
+.I READLINK 
+operation returns the data to the client for interpretation.
+.LP
+Note:  On UNIX servers the attributes are never used, since
+symbolic links always have mode 0777.
+.KS
+.NH 3
+\&Create Directory
+.IX "NFS server procedures" NFSPROC_MKDIR() "" \fINFSPROC_MKDIR()\fP
+.DS
+diropres
+NFSPROC_MKDIR (createargs) = 14;
+.DE
+.KE
+The new directory "where.name" is created in the directory given by
+"where.dir".  The initial attributes of the new directory are given
+by "attributes".  A reply "status" of NFS_OK indicates that the new
+directory was created, and reply "file" and  reply "attributes" are
+its file  handle and attributes.  Any  other  reply "status"  means
+that the operation failed and no directory was created.
+.LP
+Note: possibly non-idempotent operation.
+.KS
+.NH 3
+\&Remove Directory
+.IX "NFS server procedures" NFSPROC_RMDIR() "" \fINFSPROC_RMDIR()\fP
+.DS
+stat
+NFSPROC_RMDIR(diropargs) = 15;
+.DE
+.KE
+The existing empty directory "name" in the directory given by "dir"
+is removed.  If the reply is 
+.I NFS_OK ,
+the directory was removed.
+.LP
+Note: possibly non-idempotent operation.
+.KS
+.NH 3
+\&Read From Directory
+.IX "NFS server procedures" NFSPROC_READDIR() "" \fINFSPROC_READDIR()\fP
+.DS
+struct readdirargs {
+	fhandle dir;            
+	nfscookie cookie;
+	unsigned count;         
+};
+
+struct entry {
+	unsigned fileid;
+	filename name;
+	nfscookie cookie;
+	entry *nextentry;
+};
+
+union readdirres switch (stat status) {
+	case NFS_OK:
+		struct {
+			entry *entries;
+			bool eof;
+		} readdirok;
+	default:
+		void;
+};
+
+readdirres
+NFSPROC_READDIR (readdirargs) = 16;
+.DE
+.KE
+Returns a variable number of  directory entries,  with a total size
+of up to "count" bytes, from the directory given  by "dir".  If the
+returned  value of "status"  is 
+.I NFS_OK ,
+then  it  is followed  by a
+variable  number  of "entry"s.    Each "entry" contains  a "fileid"
+which consists of a  unique number  to identify the  file within  a
+filesystem,  the  "name" of the  file, and a "cookie" which   is an
+opaque pointer to the next entry in  the  directory.  The cookie is
+used  in the next  
+.I READDIR 
+call to get more  entries  starting at a
+given point in  the directory.  The  special cookie zero (all  bits
+zero) can be used to get the entries starting  at the  beginning of
+the directory.  The "fileid" field should be the same number as the
+"fileid" in the the  attributes of the  file.  (See the
+.I "Basic Data Types"
+section.) 
+The "eof" flag has a value of
+.I TRUE 
+if there are no more entries in the directory.
+.KS
+.NH 3
+\&Get Filesystem Attributes
+.IX "NFS server procedures" NFSPROC_STATFS() "" \fINFSPROC_STATFS()\fP
+.DS
+union statfsres (stat status) {
+	case NFS_OK:
+		struct {
+			unsigned tsize; 
+			unsigned bsize; 
+			unsigned blocks;
+			unsigned bfree; 
+			unsigned bavail;
+		} info;
+	default:
+		void;
+};
+
+statfsres
+NFSPROC_STATFS(fhandle) = 17;
+.DE
+.KE
+If the  reply "status"  is 
+.I NFS_OK ,
+then the  reply "info" gives the
+attributes for the filesystem that contains file referred to by the
+input fhandle.  The attribute fields contain the following values:
+.IP tsize:   
+The optimum transfer size of the server in bytes.  This is
+the number  of bytes the server  would like to have in the
+data part of READ and WRITE requests.
+.IP bsize:   
+The block size in bytes of the filesystem.
+.IP blocks:  
+The total number of "bsize" blocks on the filesystem.
+.IP bfree:   
+The number of free "bsize" blocks on the filesystem.
+.IP bavail:  
+The number of  "bsize" blocks  available to non-privileged users.
+.LP
+Note: This call does not  work well if a  filesystem has  variable
+size blocks.
+.NH 1
+\&NFS Implementation Issues
+.IX NFS implementation
+.LP
+The NFS protocol is designed to be operating system independent, but
+since this version was designed in a UNIX environment, many
+operations have semantics similar to the operations of the UNIX file
+system.  This section discusses some of the implementation-specific
+semantic issues.
+.NH 2
+\&Server/Client Relationship
+.IX NFS "server/client relationship"
+.LP
+The NFS protocol is designed to allow servers to be as simple and
+general as possible.  Sometimes the simplicity of the server can be a
+problem, if the client wants to implement complicated filesystem
+semantics.
+.LP
+For example, some operating systems allow removal of open files.  A
+process can open a file and, while it is open, remove it from the
+directory.  The file can be read and written as long as the process
+keeps it open, even though the file has no name in the filesystem.
+It is impossible for a stateless server to implement these semantics.
+The client can do some tricks such as renaming the file on remove,
+and only removing it on close.  We believe that the server provides
+enough functionality to implement most file system semantics on the
+client.
+.LP
+Every NFS client can also potentially be a server, and remote and
+local mounted filesystems can be freely intermixed.  This leads to
+some interesting problems when a client travels down the directory
+tree of a remote filesystem and reaches the mount point on the server
+for another remote filesystem.  Allowing the server to follow the
+second remote mount would require loop detection, server lookup, and
+user revalidation.  Instead, we decided not to let clients cross a
+server's mount point.  When a client does a LOOKUP on a directory on
+which the server has mounted a filesystem, the client sees the
+underlying directory instead of the mounted directory.  A client can
+do remote mounts that match the server's mount points to maintain the
+server's view.
+.LP
+.NH 2
+\&Pathname Interpretation
+.IX NFS "pathname interpretation"
+.LP
+There are a few complications to the rule that pathnames are always
+parsed on the client.  For example, symbolic links could have
+different interpretations on different clients.  Another common
+problem for non-UNIX implementations is the special interpretation of
+the pathname ".."  to mean the parent of a given directory.  The next
+revision of the protocol uses an explicit flag to indicate the parent
+instead.
+.NH 2
+\&Permission Issues
+.IX NFS "permission issues"
+.LP
+The NFS protocol, strictly speaking, does not define the permission
+checking used  by servers.  However,  it is  expected that a server
+will do normal operating system permission checking using 
+.I AUTH_UNIX 
+style authentication as the basis of its protection mechanism.  The
+server gets the client's effective "uid", effective "gid", and groups
+on each call and uses them to check permission.  There are various
+problems with this method that can been resolved in interesting ways.
+.LP
+Using "uid" and "gid" implies that the client and server share the
+same "uid" list.  Every server and client pair must have the same
+mapping from user to "uid" and from group to "gid".  Since every
+client can also be a server, this tends to imply that the whole
+network shares the same "uid/gid" space.
+.I AUTH_DES 
+(and the  next
+revision of the NFS protocol) uses string names instead of numbers,
+but there are still complex problems to be solved.
+.LP
+Another problem arises due to the usually stateful open operation.
+Most operating systems check permission at open time, and then check
+that the file is open on each read and write request.  With stateless
+servers, the server has no idea that the file is open and must do
+permission checking on each read and write call.  On a local
+filesystem, a user can open a file and then change the permissions so
+that no one is allowed to touch it, but will still be able to write
+to the file because it is open.  On a remote filesystem, by contrast,
+the write would fail.  To get around this problem, the server's
+permission checking algorithm should allow the owner of a file to
+access it regardless of the permission setting.
+.LP
+A similar problem has to do with paging in from a file over the
+network.  The operating system usually checks for execute permission
+before opening a file for demand paging, and then reads blocks from
+the open file.  The file may not have read permission, but after it
+is opened it doesn't matter.  An NFS server can not tell the
+difference between a normal file read and a demand page-in read.  To
+make this work, the server allows reading of files if the "uid" given
+in the call has execute or read permission on the file.
+.LP
+In most operating systems, a particular user (on the user ID zero)
+has access to all files no matter what permission and ownership they
+have.  This "super-user" permission may not be allowed on the server,
+since anyone who can become super-user on their workstation could
+gain access to all remote files.  The UNIX server by default maps
+user id 0 to -2 before doing its access checking.  This works except
+for NFS root filesystems, where super-user access cannot be avoided.
+.NH 2
+\&Setting RPC Parameters
+.IX NFS "setting RPC parameters"
+.LP
+Various file system parameters and options should be set at mount
+time.  The mount protocol is described in the appendix below.  For
+example, "Soft" mounts as well as "Hard" mounts are usually both
+provided.  Soft mounted file systems return errors when RPC
+operations fail (after a given number of optional retransmissions),
+while hard mounted file systems continue to retransmit forever.
+Clients and servers may need to keep caches of recent operations to
+help avoid problems with non-idempotent operations.
+.NH 1
+\&Mount Protocol Definition
+.IX "mount protocol" "" "" "" PAGE MAJOR
+.sp 1
+.NH 2
+\&Introduction
+.IX "mount protocol" introduction
+.LP
+The mount protocol is separate from, but related to, the NFS
+protocol.  It provides operating system specific services to get the
+NFS off the ground -- looking up server path names, validating user
+identity, and checking access permissions.  Clients use the mount
+protocol to get the first file handle, which allows them entry into a
+remote filesystem.
+.LP
+The mount protocol is kept separate from the NFS protocol to make it
+easy to plug in new access checking and validation methods without
+changing the NFS server protocol.
+.LP
+Notice that the protocol definition implies stateful servers because
+the server maintains a list of client's mount requests.  The mount
+list information is not critical for the correct functioning of
+either the client or the server.  It is intended for advisory use
+only, for example, to warn possible clients when a server is going
+down.
+.LP
+Version one of the mount protocol is used with version two of the NFS
+protocol.  The only connecting point is the
+.I fhandle 
+structure, which is the same for both protocols.
+.NH 2
+\&RPC Information
+.IX "mount protocol"  "RPC information"
+.IP \fIAuthentication\fP
+The mount service uses 
+.I AUTH_UNIX 
+and 
+.I AUTH_DES 
+style authentication only.
+.IP "\fITransport Protocols\fP"
+The mount service is currently supported on UDP/IP only.
+.IP "\fIPort Number\fP"
+Consult the server's portmapper, described in the chapter
+.I "Remote Procedure Calls: Protocol Specification",
+to  find  the  port number on which the mount service is registered.
+.NH 2
+\&Sizes of XDR Structures
+.IX "mount protocol" "XDR structure sizes"
+.LP
+These  are  the sizes,   given  in  decimal   bytes, of various XDR
+structures used in the protocol:
+.DS
+/* \fIThe maximum number of bytes in a pathname argument\fP */
+const MNTPATHLEN = 1024;
+
+/* \fIThe maximum number of bytes in a name argument\fP */
+const MNTNAMLEN = 255;
+
+/* \fIThe size in bytes of the opaque file handle\fP */
+const FHSIZE = 32;
+.DE
+.NH 2
+\&Basic Data Types
+.IX "mount protocol" "basic data types"
+.IX "mount data types"
+.LP
+This section presents the data  types used by  the  mount protocol.
+In many cases they are similar to the types used in NFS.
+.KS
+.NH 3
+\&fhandle
+.IX "mount data types" fhandle "" \fIfhandle\fP
+.DS
+typedef opaque fhandle[FHSIZE];
+.DE
+.KE
+The type 
+.I fhandle 
+is the file handle that the server passes to the
+client.  All file operations are done  using file handles  to refer
+to a  file  or directory.   The  file handle  can  contain whatever
+information the server needs to distinguish an individual file.
+.LP
+This  is the  same as the "fhandle" XDR definition in version 2 of
+the NFS protocol;  see 
+.I "Basic Data Types"
+in the definition of the NFS protocol, above.
+.KS
+.NH 3
+\&fhstatus
+.IX "mount data types" fhstatus "" \fIfhstatus\fP
+.DS
+union fhstatus switch (unsigned status) {
+	case 0:
+		fhandle directory;
+	default:
+		void;
+};
+.DE
+.KE
+The type 
+.I fhstatus 
+is a union.  If a "status" of zero is returned,
+the  call completed   successfully, and  a  file handle   for   the
+"directory"  follows.  A  non-zero  status indicates  some  sort of
+error.  In this case the status is a UNIX error number.
+.KS
+.NH 3
+\&dirpath
+.IX "mount data types" dirpath "" \fIdirpath\fP
+.DS
+typedef string dirpath<MNTPATHLEN>;
+.DE
+.KE
+The type 
+.I dirpath 
+is a server pathname of a directory.
+.KS
+.NH 3
+\&name
+.IX "mount data types" name "" \fIname\fP
+.DS
+typedef string name<MNTNAMLEN>;
+.DE
+.KE
+The type 
+.I name 
+is an arbitrary string used for various names.
+.NH 2
+\&Server Procedures
+.IX "mount server procedures"
+.LP
+The following sections define the RPC procedures  supplied by a
+mount server.
+.ie t .DS
+.el .DS L
+.ft I
+/*
+* Protocol description for the mount program
+*/
+.ft CW
+
+program MOUNTPROG {
+.ft I
+/*
+* Version 1 of the mount protocol used with
+* version 2 of the NFS protocol.
+*/
+.ft CW
+	version MOUNTVERS {
+		void        MOUNTPROC_NULL(void)    = 0;
+		fhstatus    MOUNTPROC_MNT(dirpath)  = 1;
+		mountlist   MOUNTPROC_DUMP(void)    = 2;
+		void        MOUNTPROC_UMNT(dirpath) = 3;
+		void        MOUNTPROC_UMNTALL(void) = 4;
+		exportlist  MOUNTPROC_EXPORT(void)  = 5;
+	} = 1;
+} = 100005;
+.DE
+.KS
+.NH 3
+\&Do Nothing
+.IX "mount server procedures" MNTPROC_NULL() "" \fIMNTPROC_NULL()\fP
+.DS
+void 
+MNTPROC_NULL(void) = 0;
+.DE
+.KE
+This  procedure does no work.  It   is  made  available in all  RPC
+services to allow server response testing and timing.
+.KS
+.NH 3
+\&Add Mount Entry
+.IX "mount server procedures" MNTPROC_MNT() "" \fIMNTPROC_MNT()\fP
+.DS
+fhstatus
+MNTPROC_MNT(dirpath) = 1;
+.DE
+.KE
+If the reply "status" is 0, then the reply "directory" contains the
+file handle for the directory "dirname".  This file handle may be
+used in the NFS protocol.  This procedure also adds a new entry to
+the mount list for this client mounting "dirname".
+.KS
+.NH 3
+\&Return Mount Entries
+.IX "mount server procedures" MNTPROC_DUMP() "" \fIMNTPROC_DUMP()\fP
+.DS
+struct *mountlist {
+	name      hostname;
+	dirpath   directory;
+	mountlist nextentry;
+};
+
+mountlist
+MNTPROC_DUMP(void) = 2;
+.DE
+.KE
+Returns  the list of  remote mounted filesystems.   The "mountlist"
+contains one entry for each "hostname" and "directory" pair.
+.KS
+.NH 3
+\&Remove Mount Entry
+.IX "mount server procedures" MNTPROC_UMNT() "" \fIMNTPROC_UMNT()\fP
+.DS
+void
+MNTPROC_UMNT(dirpath) = 3;
+.DE
+.KE
+Removes the mount list entry for the input "dirpath".
+.KS
+.NH 3
+\&Remove All Mount Entries
+.IX "mount server procedures" MNTPROC_UMNTALL() "" \fIMNTPROC_UMNTALL()\fP
+.DS
+void
+MNTPROC_UMNTALL(void) = 4;
+.DE
+.KE
+Removes all of the mount list entries for this client.
+.KS
+.NH 3
+\&Return Export List
+.IX "mount server procedures" MNTPROC_EXPORT() "" \fIMNTPROC_EXPORT()\fP
+.DS
+struct *groups {
+	name grname;
+	groups grnext;
+};
+
+struct *exportlist {
+	dirpath filesys;
+	groups groups;
+	exportlist next;
+};
+
+exportlist
+MNTPROC_EXPORT(void) = 5;
+.DE
+.KE
+Returns a variable number of export list entries.  Each entry
+contains a filesystem name and a list of groups that are allowed to
+import it.  The filesystem name is in "filesys", and the group name
+is in the list "groups".
+.LP
+Note:  The exportlist should contain
+more information about the status of the filesystem, such as a
+read-only flag.
diff --git a/lib/libc/rpc/PSD.doc/rpc.prog.ms b/lib/libc/rpc/PSD.doc/rpc.prog.ms
new file mode 100644
index 0000000..3b02447
--- /dev/null
+++ b/lib/libc/rpc/PSD.doc/rpc.prog.ms
@@ -0,0 +1,2684 @@
+.\"
+.\" Must use -- tbl and pic -- with this one
+.\"
+.\" @(#)rpc.prog.ms	2.3 88/08/11 4.0 RPCSRC
+.de BT
+.if \\n%=1 .tl ''- % -''
+..
+.IX "Network Programming" "" "" "" PAGE MAJOR
+.nr OF 0
+.ND
+.\" prevent excess underlining in nroff
+.if n .fp 2 R
+.OH 'Remote Procedure Call Programming Guide''Page %'
+.EH 'Page %''Remote Procedure Call Programming Guide'
+.SH
+\&Remote Procedure Call Programming Guide
+.nr OF 1
+.IX "RPC Programming Guide"
+.LP
+This document assumes a working knowledge of network theory.  It is
+intended for programmers who wish to write network applications using
+remote procedure calls (explained below), and who want to understand
+the RPC mechanisms usually hidden by the
+.I rpcgen(1) 
+protocol compiler.
+.I rpcgen 
+is described in detail in the previous chapter, the
+.I "\fBrpcgen\fP \fIProgramming Guide\fP".
+.SH
+Note:
+.I
+.IX rpcgen "" \fIrpcgen\fP
+Before attempting to write a network application, or to convert an
+existing non-network application to run over the network, you may want to
+understand the material in this chapter.  However, for most applications,
+you can circumvent the need to cope with the details presented here by using
+.I rpcgen .
+The
+.I "Generating XDR Routines"
+section of that chapter contains the complete source for a working RPC
+service\(ema remote directory listing service which uses
+.I rpcgen 
+to generate XDR routines as well as client and server stubs.
+.LP
+.LP
+What are remote procedure calls?  Simply put, they are the high-level
+communications paradigm used in the operating system.
+RPC presumes the existence of
+low-level networking mechanisms (such as TCP/IP and UDP/IP), and upon them
+it implements a logical client to server communications system designed
+specifically for the support of network applications.  With RPC, the client
+makes a procedure call to send a data packet to the server.  When the
+packet arrives, the server calls a dispatch routine, performs whatever
+service is requested, sends back the reply, and the procedure call returns
+to the client.
+.NH 0
+\&Layers of RPC
+.IX "layers of RPC"
+.IX "RPC" "layers"
+.LP
+The RPC interface can be seen as being divided into three layers.\**
+.FS
+For a complete specification of the routines in the remote procedure
+call Library, see the
+.I rpc(3N) 
+manual page.
+.FE
+.LP
+.I "The Highest Layer:"
+.IX RPC "The Highest Layer"
+The highest layer is totally transparent to the operating system, 
+machine and network upon which is is run.  It's probably best to 
+think of this level as a way of
+.I using
+RPC, rather than as
+a \fIpart of\fP RPC proper.  Programmers who write RPC routines 
+should (almost) always make this layer available to others by way 
+of a simple C front end that entirely hides the networking.
+.LP 
+To illustrate, at this level a program can simply make a call to
+.I rnusers (),
+a C routine which returns the number of users on a remote machine.
+The user is not explicitly aware of using RPC \(em they simply 
+call a procedure, just as they would call
+.I malloc() .
+.LP
+.I "The Middle Layer:"
+.IX RPC "The Middle Layer"
+The middle layer is really \*QRPC proper.\*U  Here, the user doesn't
+need to consider details about sockets, the UNIX system, or other low-level 
+implementation mechanisms.  They simply make remote procedure calls
+to routines on other machines.  The selling point here is simplicity.  
+It's this layer that allows RPC to pass the \*Qhello world\*U test \(em
+simple things should be simple.  The middle-layer routines are used 
+for most applications.
+.LP
+RPC calls are made with the system routines
+.I registerrpc()
+.I callrpc()
+and
+.I svc_run ().
+The first two of these are the most fundamental:
+.I registerrpc() 
+obtains a unique system-wide procedure-identification number, and
+.I callrpc() 
+actually executes a remote procedure call.  At the middle level, a 
+call to 
+.I rnusers()
+is implemented by way of these two routines.
+.LP
+The middle layer is unfortunately rarely used in serious programming 
+due to its inflexibility (simplicity).  It does not allow timeout 
+specifications or the choice of transport.  It allows no UNIX
+process control or flexibility in case of errors.  It doesn't support
+multiple kinds of call authentication.  The programmer rarely needs 
+all these kinds of control, but one or two of them is often necessary.
+.LP
+.I "The Lowest Layer:"
+.IX RPC "The Lowest Layer"
+The lowest layer does allow these details to be controlled by the 
+programmer, and for that reason it is often necessary.  Programs 
+written at this level are also most efficient, but this is rarely a
+real issue \(em since RPC clients and servers rarely generate 
+heavy network loads.
+.LP
+Although this document only discusses the interface to C,
+remote procedure calls can be made from any language.
+Even though this document discusses RPC
+when it is used to communicate
+between processes on different machines,
+it works just as well for communication
+between different processes on the same machine.
+.br
+.KS
+.NH 2
+\&The RPC Paradigm
+.IX RPC paradigm
+.LP
+Here is a diagram of the RPC paradigm:
+.LP
+\fBFigure 1-1\fI Network Communication with the Remote Reocedure Call\fR
+.LP
+.PS
+L1: arrow down 1i "client " rjust "program " rjust
+L2: line right 1.5i "\fIcallrpc\fP" "function"
+move up 1.5i; line dotted down 6i; move up 4.5i
+arrow right 1i
+L3: arrow down 1i "invoke " rjust "service " rjust
+L4: arrow right 1.5i "call" "service"
+L5: arrow down 1i " service" ljust " executes" ljust
+L6: arrow left 1.5i "\fIreturn\fP" "answer"
+L7: arrow down 1i "request " rjust "completed " rjust
+L8: line left 1i
+arrow left 1.5i "\fIreturn\fP" "reply"
+L9: arrow down 1i "program " rjust "continues " rjust
+line dashed down from L2 to L9
+line dashed down from L4 to L7
+line dashed up 1i from L3 "service " rjust "daemon " rjust
+arrow dashed down 1i from L8
+move right 1i from L3
+box invis "Machine B"
+move left 1.2i from L2; move down
+box invis "Machine A"
+.PE
+.KE
+.KS
+.NH 1
+\&Higher Layers of RPC
+.NH 2
+\&Highest Layer
+.IX "highest layer of RPC"
+.IX RPC "highest layer"
+.LP
+Imagine you're writing a program that needs to know
+how many users are logged into a remote machine.
+You can do this by calling the RPC library routine
+.I rnusers()
+as illustrated below:
+.ie t .DS
+.el .DS L
+.ft CW
+#include <stdio.h>
+
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	int num;
+
+	if (argc != 2) {
+		fprintf(stderr, "usage: rnusers hostname\en");
+		exit(1);
+	}
+	if ((num = rnusers(argv[1])) < 0) {
+		fprintf(stderr, "error: rnusers\en");
+		exit(-1);
+	}
+	printf("%d users on %s\en", num, argv[1]);
+	exit(0);
+}
+.DE
+.KE
+RPC library routines such as
+.I rnusers() 
+are in the RPC services library
+.I librpcsvc.a
+Thus, the program above should be compiled with
+.DS
+.ft CW
+% cc \fIprogram.c -lrpcsvc\fP
+.DE
+.I rnusers (),
+like the other RPC library routines, is documented in section 3R 
+of the
+.I "System Interface Manual for the Sun Workstation" ,
+the same section which documents the standard Sun RPC services.  
+.IX "RPC Services"
+See the 
+.I intro(3R) 
+manual page for an explanation of the documentation strategy 
+for these services and their RPC protocols.
+.LP
+Here are some of the RPC service library routines available to the 
+C programmer:
+.LP
+\fBTable 3-3\fI RPC Service Library Routines\RP
+.TS
+box tab (&) ;
+cfI cfI
+lfL l .
+Routine&Description
+_
+.sp.5
+rnusers&Return number of users on remote machine
+rusers&Return information about users on remote machine
+havedisk&Determine if remote machine has disk
+rstats&Get performance data from remote kernel
+rwall&Write to specified remote machines
+yppasswd&Update user password in Yellow Pages
+.TE
+.LP
+Other RPC services \(em for example
+.I ether()
+.I mount
+.I rquota()
+and
+.I spray
+\(em are not available to the C programmer as library routines.
+They do, however,
+have RPC program numbers so they can be invoked with
+.I callrpc()
+which will be discussed in the next section.  Most of them also 
+have compilable 
+.I rpcgen(1) 
+protocol description files.  (The
+.I rpcgen
+protocol compiler radically simplifies the process of developing
+network applications.  
+See the \fBrpcgen\fI Programming Guide\fR
+for detailed information about 
+.I rpcgen 
+and 
+.I rpcgen 
+protocol description files).
+.KS
+.NH 2
+\&Intermediate Layer
+.IX "intermediate layer of RPC"
+.IX "RPC" "intermediate layer"
+.LP
+The simplest interface, which explicitly makes RPC calls, uses the 
+functions
+.I callrpc()
+and
+.I registerrpc()
+Using this method, the number of remote users can be gotten as follows:
+.ie t .DS
+.el .DS L
+#include <stdio.h>
+#include <rpc/rpc.h>
+#include <utmp.h>
+#include <rpcsvc/rusers.h>
+
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	unsigned long nusers;
+	int stat;
+
+	if (argc != 2) {
+		fprintf(stderr, "usage: nusers hostname\en");
+		exit(-1);
+	}
+	if (stat = callrpc(argv[1],
+	  RUSERSPROG, RUSERSVERS, RUSERSPROC_NUM,
+	  xdr_void, 0, xdr_u_long, &nusers) != 0) {
+		clnt_perrno(stat);
+		exit(1);
+	}
+	printf("%d users on %s\en", nusers, argv[1]);
+	exit(0);
+}
+.DE
+.KE
+Each RPC procedure is uniquely defined by a program number, 
+version number, and procedure number.  The program number 
+specifies a group of related remote procedures, each of 
+which has a different procedure number.  Each program also 
+has a version number, so when a minor change is made to a 
+remote service (adding a new procedure, for example), a new 
+program number doesn't have to be assigned.  When you want 
+to call a procedure to find the number of remote users, you 
+look up the appropriate program, version and procedure numbers
+in a manual, just as you look up the name of a memory allocator 
+when you want to allocate memory.
+.LP
+The simplest way of making remote procedure calls is with the the RPC 
+library routine
+.I callrpc()
+It has eight parameters.  The first is the name of the remote server 
+machine.  The next three parameters are the program, version, and procedure 
+numbers\(emtogether they identify the procedure to be called.
+The fifth and sixth parameters are an XDR filter and an argument to
+be encoded and passed to the remote procedure.  
+The final two parameters are a filter for decoding the results 
+returned by the remote procedure and a pointer to the place where 
+the procedure's results are to be stored.  Multiple arguments and
+results are handled by embedding them in structures.  If 
+.I callrpc() 
+completes successfully, it returns zero; else it returns a nonzero 
+value.  The return codes (of type
+.IX "enum clnt_stat (in RPC programming)" "" "\fIenum clnt_stat\fP (in RPC programming)"
+cast into an integer) are found in 
+.I <rpc/clnt.h> .
+.LP
+Since data types may be represented differently on different machines,
+.I callrpc() 
+needs both the type of the RPC argument, as well as
+a pointer to the argument itself (and similarly for the result).  For
+.I RUSERSPROC_NUM ,
+the return value is an
+.I "unsigned long"
+so
+.I callrpc() 
+has
+.I xdr_u_long() 
+as its first return parameter, which says
+that the result is of type
+.I "unsigned long"
+and
+.I &nusers 
+as its second return parameter,
+which is a pointer to where the long result will be placed.  Since
+.I RUSERSPROC_NUM 
+takes no argument, the argument parameter of
+.I callrpc() 
+is
+.I xdr_void ().
+.LP
+After trying several times to deliver a message, if
+.I callrpc() 
+gets no answer, it returns with an error code.
+The delivery mechanism is UDP,
+which stands for User Datagram Protocol.
+Methods for adjusting the number of retries
+or for using a different protocol require you to use the lower
+layer of the RPC library, discussed later in this document.
+The remote server procedure
+corresponding to the above might look like this:
+.ie t .DS
+.el .DS L
+.ft CW
+.ft CW
+char *
+nuser(indata)
+	char *indata;
+{
+	unsigned long nusers;
+
+.ft I
+	/*
+	 * Code here to compute the number of users
+	 * and place result in variable \fInusers\fP.
+	 */
+.ft CW
+	return((char *)&nusers);
+}
+.DE
+.LP
+It takes one argument, which is a pointer to the input
+of the remote procedure call (ignored in our example),
+and it returns a pointer to the result.
+In the current version of C,
+character pointers are the generic pointers,
+so both the input argument and the return value are cast to
+.I "char *" .
+.LP
+Normally, a server registers all of the RPC calls it plans
+to handle, and then goes into an infinite loop waiting to service requests.
+In this example, there is only a single procedure
+to register, so the main body of the server would look like this:
+.ie t .DS
+.el .DS L
+.ft CW
+#include <stdio.h>
+#include <rpc/rpc.h>
+#include <utmp.h>
+#include <rpcsvc/rusers.h>
+
+char *nuser();
+
+main()
+{
+	registerrpc(RUSERSPROG, RUSERSVERS, RUSERSPROC_NUM,
+		nuser, xdr_void, xdr_u_long);
+	svc_run();		/* \fINever returns\fP */
+	fprintf(stderr, "Error: svc_run returned!\en");
+	exit(1);
+}
+.DE
+.LP
+The
+.I registerrpc()
+routine registers a C procedure as corresponding to a
+given RPC procedure number.  The first three parameters,
+.I RUSERPROG ,
+.I RUSERSVERS ,
+and
+.I RUSERSPROC_NUM 
+are the program, version, and procedure numbers
+of the remote procedure to be registered;
+.I nuser() 
+is the name of the local procedure that implements the remote
+procedure; and
+.I xdr_void() 
+and
+.I xdr_u_long() 
+are the XDR filters for the remote procedure's arguments and
+results, respectively.  (Multiple arguments or multiple results
+are passed as structures).
+.LP
+Only the UDP transport mechanism can use
+.I registerrpc()
+thus, it is always safe in conjunction with calls generated by
+.I callrpc() .
+.SH
+.IX "UDP 8K warning"
+Warning: the UDP transport mechanism can only deal with
+arguments and results less than 8K bytes in length.
+.LP
+.LP
+After registering the local procedure, the server program's
+main procedure calls
+.I svc_run (),
+the RPC library's remote procedure dispatcher.  It is this 
+function that calls the remote procedures in response to RPC
+call messages.  Note that the dispatcher takes care of decoding
+remote procedure arguments and encoding results, using the XDR
+filters specified when the remote procedure was registered.
+.NH 2
+\&Assigning Program Numbers
+.IX "program number assignment"
+.IX "assigning program numbers"
+.LP
+Program numbers are assigned in groups of 
+.I 0x20000000 
+according to the following chart:
+.DS
+.ft CW
+       0x0 - 0x1fffffff	\fRDefined by Sun\fP
+0x20000000 - 0x3fffffff	\fRDefined by user\fP
+0x40000000 - 0x5fffffff	\fRTransient\fP
+0x60000000 - 0x7fffffff	\fRReserved\fP
+0x80000000 - 0x9fffffff	\fRReserved\fP
+0xa0000000 - 0xbfffffff	\fRReserved\fP
+0xc0000000 - 0xdfffffff	\fRReserved\fP
+0xe0000000 - 0xffffffff	\fRReserved\fP
+.ft R
+.DE
+Sun Microsystems administers the first group of numbers, which
+should be identical for all Sun customers.  If a customer
+develops an application that might be of general interest, that
+application should be given an assigned number in the first
+range.  The second group of numbers is reserved for specific
+customer applications.  This range is intended primarily for
+debugging new programs.  The third group is reserved for
+applications that generate program numbers dynamically.  The
+final groups are reserved for future use, and should not be
+used.
+.LP
+To register a protocol specification, send a request by network 
+mail to
+.I rpc@sun
+or write to:
+.DS
+RPC Administrator
+Sun Microsystems
+2550 Garcia Ave.
+Mountain View, CA 94043
+.DE
+Please include a compilable 
+.I rpcgen 
+\*Q.x\*U file describing your protocol.
+You will be given a unique program number in return.
+.IX RPC administration
+.IX administration "of RPC"
+.LP
+The RPC program numbers and protocol specifications 
+of standard Sun RPC services can be
+found in the include files in 
+.I "/usr/include/rpcsvc" .
+These services, however, constitute only a small subset 
+of those which have been registered.  The complete list of 
+registered programs, as of the time when this manual was 
+printed, is:
+.LP
+\fBTable 3-2\fI RPC Registered Programs\fR
+.TS H
+box tab (&) ;
+lfBI lfBI lfBI
+lfL lfL lfI .
+RPC Number&Program&Description
+_
+.TH
+.sp.5
+100000&PMAPPROG&portmapper
+100001&RSTATPROG&remote stats            
+100002&RUSERSPROG&remote users            
+100003&NFSPROG&nfs                     
+100004&YPPROG&Yellow Pages            
+100005&MOUNTPROG&mount demon             
+100006&DBXPROG&remote dbx              
+100007&YPBINDPROG&yp binder               
+100008&WALLPROG&shutdown msg            
+100009&YPPASSWDPROG&yppasswd server         
+100010&ETHERSTATPROG&ether stats             
+100011&RQUOTAPROG&disk quotas             
+100012&SPRAYPROG&spray packets           
+100013&IBM3270PROG&3270 mapper             
+100014&IBMRJEPROG&RJE mapper              
+100015&SELNSVCPROG&selection service       
+100016&RDATABASEPROG&remote database access  
+100017&REXECPROG&remote execution        
+100018&ALICEPROG&Alice Office Automation 
+100019&SCHEDPROG&scheduling service      
+100020&LOCKPROG&local lock manager      
+100021&NETLOCKPROG&network lock manager    
+100022&X25PROG&x.25 inr protocol       
+100023&STATMON1PROG&status monitor 1        
+100024&STATMON2PROG&status monitor 2        
+100025&SELNLIBPROG&selection library       
+100026&BOOTPARAMPROG&boot parameters service 
+100027&MAZEPROG&mazewars game           
+100028&YPUPDATEPROG&yp update               
+100029&KEYSERVEPROG&key server              
+100030&SECURECMDPROG&secure login            
+100031&NETFWDIPROG&nfs net forwarder init	
+100032&NETFWDTPROG&nfs net forwarder trans	
+100033&SUNLINKMAP_PROG&sunlink MAP		
+100034&NETMONPROG&network monitor		
+100035&DBASEPROG&lightweight database	
+100036&PWDAUTHPROG&password authorization	
+100037&TFSPROG&translucent file svc	
+100038&NSEPROG&nse server		
+100039&NSE_ACTIVATE_PROG&nse activate daemon	
+.sp .2i
+150001&PCNFSDPROG&pc passwd authorization 
+.sp .2i
+200000&PYRAMIDLOCKINGPROG&Pyramid-locking         
+200001&PYRAMIDSYS5&Pyramid-sys5            
+200002&CADDS_IMAGE&CV cadds_image		
+.sp .2i
+300001&ADT_RFLOCKPROG&ADT file locking	
+.TE
+.NH 2
+\&Passing Arbitrary Data Types
+.IX "arbitrary data types"
+.LP
+In the previous example, the RPC call passes a single
+.I "unsigned long"
+RPC can handle arbitrary data structures, regardless of
+different machines' byte orders or structure layout conventions,
+by always converting them to a network standard called
+.I "External Data Representation"
+(XDR) before
+sending them over the wire.
+The process of converting from a particular machine representation
+to XDR format is called
+.I serializing ,
+and the reverse process is called
+.I deserializing .
+The type field parameters of
+.I callrpc() 
+and
+.I registerrpc() 
+can be a built-in procedure like
+.I xdr_u_long() 
+in the previous example, or a user supplied one.
+XDR has these built-in type routines:
+.IX RPC "built-in routines"
+.DS
+.ft CW
+xdr_int()      xdr_u_int()      xdr_enum()
+xdr_long()     xdr_u_long()     xdr_bool()
+xdr_short()    xdr_u_short()    xdr_wrapstring()
+xdr_char()     xdr_u_char()
+.DE
+Note that the routine
+.I xdr_string() 
+exists, but cannot be used with 
+.I callrpc() 
+and
+.I registerrpc (),
+which only pass two parameters to their XDR routines.
+.I xdr_wrapstring() 
+has only two parameters, and is thus OK.  It calls 
+.I xdr_string ().
+.LP
+As an example of a user-defined type routine,
+if you wanted to send the structure
+.DS
+.ft CW
+struct simple {
+	int a;
+	short b;
+} simple;
+.DE
+then you would call
+.I callrpc() 
+as
+.DS
+.ft CW
+callrpc(hostname, PROGNUM, VERSNUM, PROCNUM,
+        xdr_simple, &simple ...);
+.DE
+where
+.I xdr_simple() 
+is written as:
+.ie t .DS
+.el .DS L
+.ft CW
+#include <rpc/rpc.h>
+
+xdr_simple(xdrsp, simplep)
+	XDR *xdrsp;
+	struct simple *simplep;
+{
+	if (!xdr_int(xdrsp, &simplep->a))
+		return (0);
+	if (!xdr_short(xdrsp, &simplep->b))
+		return (0);
+	return (1);
+}
+.DE
+.LP
+An XDR routine returns nonzero (true in the sense of C) if it 
+completes successfully, and zero otherwise.
+A complete description of XDR is in the
+.I "XDR Protocol Specification" 
+section of this manual, only few implementation examples are 
+given here.
+.LP
+In addition to the built-in primitives,
+there are also the prefabricated building blocks:
+.DS
+.ft CW
+xdr_array()       xdr_bytes()     xdr_reference()
+xdr_vector()      xdr_union()     xdr_pointer()
+xdr_string()      xdr_opaque()
+.DE
+To send a variable array of integers,
+you might package them up as a structure like this
+.DS
+.ft CW
+struct varintarr {
+	int *data;
+	int arrlnth;
+} arr;
+.DE
+and make an RPC call such as
+.DS
+.ft CW
+callrpc(hostname, PROGNUM, VERSNUM, PROCNUM,
+        xdr_varintarr, &arr...);
+.DE
+with
+.I xdr_varintarr() 
+defined as:
+.ie t .DS
+.el .DS L
+.ft CW
+xdr_varintarr(xdrsp, arrp)
+	XDR *xdrsp;
+	struct varintarr *arrp;
+{
+	return (xdr_array(xdrsp, &arrp->data, &arrp->arrlnth, 
+		MAXLEN, sizeof(int), xdr_int));
+}
+.DE
+This routine takes as parameters the XDR handle,
+a pointer to the array, a pointer to the size of the array,
+the maximum allowable array size,
+the size of each array element,
+and an XDR routine for handling each array element.
+.KS
+.LP
+If the size of the array is known in advance, one can use
+.I xdr_vector (),
+which serializes fixed-length arrays.
+.ie t .DS
+.el .DS L
+.ft CW
+int intarr[SIZE];
+
+xdr_intarr(xdrsp, intarr)
+	XDR *xdrsp;
+	int intarr[];
+{
+	int i;
+
+	return (xdr_vector(xdrsp, intarr, SIZE, sizeof(int),
+		xdr_int));
+}
+.DE
+.KE
+.LP
+XDR always converts quantities to 4-byte multiples when serializing.
+Thus, if either of the examples above involved characters
+instead of integers, each character would occupy 32 bits.
+That is the reason for the XDR routine
+.I xdr_bytes()
+which is like
+.I xdr_array()
+except that it packs characters;
+.I xdr_bytes() 
+has four parameters, similar to the first four parameters of
+.I xdr_array ().
+For null-terminated strings, there is also the
+.I xdr_string()
+routine, which is the same as
+.I xdr_bytes() 
+without the length parameter.
+On serializing it gets the string length from
+.I strlen (),
+and on deserializing it creates a null-terminated string.
+.LP
+Here is a final example that calls the previously written
+.I xdr_simple() 
+as well as the built-in functions
+.I xdr_string() 
+and
+.I xdr_reference (),
+which chases pointers:
+.ie t .DS
+.el .DS L
+.ft CW
+struct finalexample {
+	char *string;
+	struct simple *simplep;
+} finalexample;
+
+xdr_finalexample(xdrsp, finalp)
+	XDR *xdrsp;
+	struct finalexample *finalp;
+{
+
+	if (!xdr_string(xdrsp, &finalp->string, MAXSTRLEN))
+		return (0);
+	if (!xdr_reference(xdrsp, &finalp->simplep,
+	  sizeof(struct simple), xdr_simple);
+		return (0);
+	return (1);
+}
+.DE
+Note that we could as easily call
+.I xdr_simple() 
+here instead of
+.I xdr_reference ().
+.NH 1
+\&Lowest Layer of RPC
+.IX "lowest layer of RPC"
+.IX "RPC" "lowest layer"
+.LP
+In the examples given so far,
+RPC takes care of many details automatically for you.
+In this section, we'll show you how you can change the defaults
+by using lower layers of the RPC library.
+It is assumed that you are familiar with sockets
+and the system calls for dealing with them.
+.LP
+There are several occasions when you may need to use lower layers of 
+RPC.  First, you may need to use TCP, since the higher layer uses UDP, 
+which restricts RPC calls to 8K bytes of data.  Using TCP permits calls 
+to send long streams of data.  
+For an example, see the
+.I TCP
+section below.  Second, you may want to allocate and free memory
+while serializing or deserializing with XDR routines.  
+There is no call at the higher level to let 
+you free memory explicitly.  
+For more explanation, see the
+.I "Memory Allocation with XDR"
+section below.  
+Third, you may need to perform authentication 
+on either the client or server side, by supplying 
+credentials or verifying them.
+See the explanation in the 
+.I Authentication
+section below.
+.NH 2
+\&More on the Server Side
+.IX RPC "server side"
+.LP
+The server for the
+.I nusers() 
+program shown below does the same thing as the one using
+.I registerrpc() 
+above, but is written using a lower layer of the RPC package:
+.ie t .DS
+.el .DS L
+.ft CW
+#include <stdio.h>
+#include <rpc/rpc.h>
+#include <utmp.h>
+#include <rpcsvc/rusers.h>
+
+main()
+{
+	SVCXPRT *transp;
+	int nuser();
+
+	transp = svcudp_create(RPC_ANYSOCK);
+	if (transp == NULL){
+		fprintf(stderr, "can't create an RPC server\en");
+		exit(1);
+	}
+	pmap_unset(RUSERSPROG, RUSERSVERS);
+	if (!svc_register(transp, RUSERSPROG, RUSERSVERS,
+			  nuser, IPPROTO_UDP)) {
+		fprintf(stderr, "can't register RUSER service\en");
+		exit(1);
+	}
+	svc_run();  /* \fINever returns\fP */
+	fprintf(stderr, "should never reach this point\en");
+}
+
+nuser(rqstp, transp)
+	struct svc_req *rqstp;
+	SVCXPRT *transp;
+{
+	unsigned long nusers;
+
+	switch (rqstp->rq_proc) {
+	case NULLPROC:
+		if (!svc_sendreply(transp, xdr_void, 0))
+			fprintf(stderr, "can't reply to RPC call\en");
+		return;
+	case RUSERSPROC_NUM:
+.ft I
+		/*
+		 * Code here to compute the number of users
+		 * and assign it to the variable \fInusers\fP
+		 */
+.ft CW
+		if (!svc_sendreply(transp, xdr_u_long, &nusers)) 
+			fprintf(stderr, "can't reply to RPC call\en");
+		return;
+	default:
+		svcerr_noproc(transp);
+		return;
+	}
+}
+.DE
+.LP
+First, the server gets a transport handle, which is used
+for receiving and replying to RPC messages.
+.I registerrpc() 
+uses
+.I svcudp_create()
+to get a UDP handle.
+If you require a more reliable protocol, call
+.I svctcp_create()
+instead.
+If the argument to
+.I svcudp_create() 
+is
+.I RPC_ANYSOCK
+the RPC library creates a socket
+on which to receive and reply to RPC calls.  Otherwise,
+.I svcudp_create() 
+expects its argument to be a valid socket number.
+If you specify your own socket, it can be bound or unbound.
+If it is bound to a port by the user, the port numbers of
+.I svcudp_create() 
+and
+.I clnttcp_create()
+(the low-level client routine) must match.
+.LP
+If the user specifies the
+.I RPC_ANYSOCK 
+argument, the RPC library routines will open sockets.
+Otherwise they will expect the user to do so.  The routines
+.I svcudp_create() 
+and 
+.I clntudp_create()
+will cause the RPC library routines to
+.I bind() 
+their socket if it is not bound already.
+.LP
+A service may choose to register its port number with the
+local portmapper service.  This is done is done by specifying
+a non-zero protocol number in
+.I svc_register ().
+Incidently, a client can discover the server's port number by 
+consulting the portmapper on their server's machine.  This can 
+be done automatically by specifying a zero port number in 
+.I clntudp_create() 
+or
+.I clnttcp_create ().
+.LP
+After creating an
+.I SVCXPRT ,
+the next step is to call
+.I pmap_unset()
+so that if the
+.I nusers() 
+server crashed earlier,
+any previous trace of it is erased before restarting.
+More precisely,
+.I pmap_unset() 
+erases the entry for
+.I RUSERSPROG
+from the port mapper's tables.
+.LP
+Finally, we associate the program number for
+.I nusers() 
+with the procedure
+.I nuser ().
+The final argument to
+.I svc_register() 
+is normally the protocol being used,
+which, in this case, is
+.I IPPROTO_UDP
+Notice that unlike
+.I registerrpc (),
+there are no XDR routines involved
+in the registration process.
+Also, registration is done on the program,
+rather than procedure, level.
+.LP
+The user routine
+.I nuser() 
+must call and dispatch the appropriate XDR routines
+based on the procedure number.
+Note that
+two things are handled by
+.I nuser() 
+that
+.I registerrpc() 
+handles automatically.
+The first is that procedure
+.I NULLPROC
+(currently zero) returns with no results.
+This can be used as a simple test
+for detecting if a remote program is running.
+Second, there is a check for invalid procedure numbers.
+If one is detected,
+.I svcerr_noproc()
+is called to handle the error.
+.KS
+.LP
+The user service routine serializes the results and returns
+them to the RPC caller via
+.I svc_sendreply()
+Its first parameter is the
+.I SVCXPRT
+handle, the second is the XDR routine,
+and the third is a pointer to the data to be returned.
+Not illustrated above is how a server
+handles an RPC program that receives data.
+As an example, we can add a procedure
+.I RUSERSPROC_BOOL
+which has an argument
+.I nusers (),
+and returns
+.I TRUE 
+or
+.I FALSE 
+depending on whether there are nusers logged on.
+It would look like this:
+.ie t .DS
+.el .DS L
+.ft CW
+case RUSERSPROC_BOOL: {
+	int bool;
+	unsigned nuserquery;
+
+	if (!svc_getargs(transp, xdr_u_int, &nuserquery) {
+		svcerr_decode(transp);
+		return;
+	}
+.ft I
+	/*
+	 * Code to set \fInusers\fP = number of users
+	 */
+.ft CW
+	if (nuserquery == nusers)
+		bool = TRUE;
+	else
+		bool = FALSE;
+	if (!svc_sendreply(transp, xdr_bool, &bool)) {
+		 fprintf(stderr, "can't reply to RPC call\en");
+		 return (1);
+	}
+	return;
+}
+.DE
+.KE
+.LP
+The relevant routine is
+.I svc_getargs()
+which takes an
+.I SVCXPRT
+handle, the XDR routine,
+and a pointer to where the input is to be placed as arguments.
+.NH 2
+\&Memory Allocation with XDR
+.IX "memory allocation with XDR"
+.IX XDR "memory allocation"
+.LP
+XDR routines not only do input and output,
+they also do memory allocation.
+This is why the second parameter of
+.I xdr_array()
+is a pointer to an array, rather than the array itself.
+If it is
+.I NULL ,
+then
+.I xdr_array()
+allocates space for the array and returns a pointer to it,
+putting the size of the array in the third argument.
+As an example, consider the following XDR routine
+.I xdr_chararr1()
+which deals with a fixed array of bytes with length
+.I SIZE .
+.ie t .DS
+.el .DS L
+.ft CW
+xdr_chararr1(xdrsp, chararr)
+	XDR *xdrsp;
+	char chararr[];
+{
+	char *p;
+	int len;
+
+	p = chararr;
+	len = SIZE;
+	return (xdr_bytes(xdrsp, &p, &len, SIZE));
+}
+.DE
+If space has already been allocated in
+.I chararr ,
+it can be called from a server like this:
+.ie t .DS
+.el .DS L
+.ft CW
+char chararr[SIZE];
+
+svc_getargs(transp, xdr_chararr1, chararr);
+.DE
+If you want XDR to do the allocation,
+you would have to rewrite this routine in the following way:
+.ie t .DS
+.el .DS L
+.ft CW
+xdr_chararr2(xdrsp, chararrp)
+	XDR *xdrsp;
+	char **chararrp;
+{
+	int len;
+
+	len = SIZE;
+	return (xdr_bytes(xdrsp, charrarrp, &len, SIZE));
+}
+.DE
+Then the RPC call might look like this:
+.ie t .DS
+.el .DS L
+.ft CW
+char *arrptr;
+
+arrptr = NULL;
+svc_getargs(transp, xdr_chararr2, &arrptr);
+.ft I
+/*
+ * Use the result here
+ */
+.ft CW
+svc_freeargs(transp, xdr_chararr2, &arrptr);
+.DE
+Note that, after being used, the character array can be freed with
+.I svc_freeargs()
+.I svc_freeargs() 
+will not attempt to free any memory if the variable indicating it 
+is NULL.  For example, in the the routine 
+.I xdr_finalexample (),
+given earlier, if
+.I finalp->string 
+was NULL, then it would not be freed.  The same is true for 
+.I finalp->simplep .
+.LP
+To summarize, each XDR routine is responsible
+for serializing, deserializing, and freeing memory.
+When an XDR routine is called from
+.I callrpc()
+the serializing part is used.
+When called from
+.I svc_getargs()
+the deserializer is used.
+And when called from
+.I svc_freeargs()
+the memory deallocator is used.  When building simple examples like those
+in this section, a user doesn't have to worry 
+about the three modes.  
+See the
+.I "External Data Representation: Sun Technical Notes"
+for examples of more sophisticated XDR routines that determine 
+which of the three modes they are in and adjust their behavior accordingly.
+.KS
+.NH 2
+\&The Calling Side
+.IX RPC "calling side"
+.LP
+When you use
+.I callrpc()
+you have no control over the RPC delivery
+mechanism or the socket used to transport the data.
+To illustrate the layer of RPC that lets you adjust these
+parameters, consider the following code to call the
+.I nusers
+service:
+.ie t .DS
+.el .DS L
+.ft CW
+.vs 11
+#include <stdio.h>
+#include <rpc/rpc.h>
+#include <utmp.h>
+#include <rpcsvc/rusers.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <netdb.h>
+
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	struct hostent *hp;
+	struct timeval pertry_timeout, total_timeout;
+	struct sockaddr_in server_addr;
+	int sock = RPC_ANYSOCK;
+	register CLIENT *client;
+	enum clnt_stat clnt_stat;
+	unsigned long nusers;
+
+	if (argc != 2) {
+		fprintf(stderr, "usage: nusers hostname\en");
+		exit(-1);
+	}
+	if ((hp = gethostbyname(argv[1])) == NULL) {
+		fprintf(stderr, "can't get addr for %s\en",argv[1]);
+		exit(-1);
+	}
+	pertry_timeout.tv_sec = 3;
+	pertry_timeout.tv_usec = 0;
+	bcopy(hp->h_addr, (caddr_t)&server_addr.sin_addr,
+		hp->h_length);
+	server_addr.sin_family = AF_INET;
+	server_addr.sin_port =  0;
+	if ((client = clntudp_create(&server_addr, RUSERSPROG,
+	  RUSERSVERS, pertry_timeout, &sock)) == NULL) {
+		clnt_pcreateerror("clntudp_create");
+		exit(-1);
+	}
+	total_timeout.tv_sec = 20;
+	total_timeout.tv_usec = 0;
+	clnt_stat = clnt_call(client, RUSERSPROC_NUM, xdr_void,
+		0, xdr_u_long, &nusers, total_timeout);
+	if (clnt_stat != RPC_SUCCESS) {
+		clnt_perror(client, "rpc");
+		exit(-1);
+	}
+	clnt_destroy(client);
+	close(sock);
+	exit(0);
+}
+.vs
+.DE
+.KE
+The low-level version of
+.I callrpc()
+is
+.I clnt_call()
+which takes a
+.I CLIENT
+pointer rather than a host name.  The parameters to
+.I clnt_call() 
+are a
+.I CLIENT 
+pointer, the procedure number,
+the XDR routine for serializing the argument,
+a pointer to the argument,
+the XDR routine for deserializing the return value,
+a pointer to where the return value will be placed,
+and the time in seconds to wait for a reply.
+.LP
+The
+.I CLIENT 
+pointer is encoded with the transport mechanism.
+.I callrpc()
+uses UDP, thus it calls
+.I clntudp_create() 
+to get a
+.I CLIENT 
+pointer.  To get TCP (Transmission Control Protocol), you would use
+.I clnttcp_create() .
+.LP
+The parameters to
+.I clntudp_create() 
+are the server address, the program number, the version number,
+a timeout value (between tries), and a pointer to a socket.
+The final argument to
+.I clnt_call() 
+is the total time to wait for a response.
+Thus, the number of tries is the
+.I clnt_call() 
+timeout divided by the
+.I clntudp_create() 
+timeout.
+.LP
+Note that the
+.I clnt_destroy()
+call
+always deallocates the space associated with the
+.I CLIENT 
+handle.  It closes the socket associated with the
+.I CLIENT 
+handle, however, only if the RPC library opened it.  It the
+socket was opened by the user, it stays open.  This makes it
+possible, in cases where there are multiple client handles
+using the same socket, to destroy one handle without closing
+the socket that other handles are using.
+.LP
+To make a stream connection, the call to
+.I clntudp_create() 
+is replaced with a call to
+.I clnttcp_create() .
+.DS
+.ft CW
+clnttcp_create(&server_addr, prognum, versnum, &sock,
+               inputsize, outputsize);
+.DE
+There is no timeout argument; instead, the receive and send buffer
+sizes must be specified.  When the
+.I clnttcp_create() 
+call is made, a TCP connection is established.
+All RPC calls using that
+.I CLIENT 
+handle would use this connection.
+The server side of an RPC call using TCP has
+.I svcudp_create()
+replaced by
+.I svctcp_create() .
+.DS
+.ft CW
+transp = svctcp_create(RPC_ANYSOCK, 0, 0);
+.DE
+The last two arguments to 
+.I svctcp_create() 
+are send and receive sizes respectively.  If `0' is specified for 
+either of these, the system chooses a reasonable default.
+.KS
+.NH 1
+\&Other RPC Features
+.IX "RPC" "miscellaneous features"
+.IX "miscellaneous RPC features"
+.LP
+This section discusses some other aspects of RPC
+that are occasionally useful.
+.NH 2
+\&Select on the Server Side
+.IX RPC select() RPC \fIselect()\fP
+.IX select() "" \fIselect()\fP "on the server side"
+.LP
+Suppose a process is processing RPC requests
+while performing some other activity.
+If the other activity involves periodically updating a data structure,
+the process can set an alarm signal before calling
+.I svc_run()
+But if the other activity
+involves waiting on a a file descriptor, the
+.I svc_run()
+call won't work.
+The code for
+.I svc_run()
+is as follows:
+.ie t .DS
+.el .DS L
+.ft CW
+.vs 11
+void
+svc_run()
+{
+	fd_set readfds;
+	int dtbsz = getdtablesize();
+
+	for (;;) {
+		readfds = svc_fds;
+		switch (select(dtbsz, &readfds, NULL,NULL,NULL)) {
+
+		case -1:
+			if (errno == EINTR)
+				continue;
+			perror("select");
+			return;
+		case 0:
+			break;
+		default:
+			svc_getreqset(&readfds);
+		}
+	}
+}
+.vs
+.DE
+.KE
+.LP
+You can bypass
+.I svc_run()
+and call
+.I svc_getreqset()
+yourself.
+All you need to know are the file descriptors
+of the socket(s) associated with the programs you are waiting on.
+Thus you can have your own
+.I select() 
+.IX select() "" \fIselect()\fP
+that waits on both the RPC socket,
+and your own descriptors.  Note that
+.I svc_fds() 
+is a bit mask of all the file descriptors that RPC is using for 
+services.  It can change everytime that
+.I any
+RPC library routine is called, because descriptors are constantly 
+being opened and closed, for example for TCP connections.
+.NH 2
+\&Broadcast RPC
+.IX "broadcast RPC"
+.IX RPC "broadcast"
+.LP
+The
+.I portmapper
+is a daemon that converts RPC program numbers
+into DARPA protocol port numbers; see the
+.I portmap 
+man page.  You can't do broadcast RPC without the portmapper.
+Here are the main differences between
+broadcast RPC and normal RPC calls:
+.IP  1.
+Normal RPC expects one answer, whereas
+broadcast RPC expects many answers
+(one or more answer from each responding machine).
+.IP  2.
+Broadcast RPC can only be supported by packet-oriented (connectionless)
+transport protocols like UPD/IP.
+.IP  3.
+The implementation of broadcast RPC
+treats all unsuccessful responses as garbage by filtering them out.
+Thus, if there is a version mismatch between the
+broadcaster and a remote service,
+the user of broadcast RPC never knows.
+.IP  4.
+All broadcast messages are sent to the portmap port.
+Thus, only services that register themselves with their portmapper
+are accessible via the broadcast RPC mechanism.
+.IP  5.
+Broadcast requests are limited in size to the MTU (Maximum Transfer
+Unit) of the local network.  For Ethernet, the MTU is 1500 bytes.
+.KS
+.NH 3
+\&Broadcast RPC Synopsis
+.IX "broadcast RPC" synopsis
+.IX "RPC" "broadcast synopsis"
+.ie t .DS
+.el .DS L
+.ft CW
+#include <rpc/pmap_clnt.h>
+	. . .
+enum clnt_stat	clnt_stat;
+	. . .
+clnt_stat = clnt_broadcast(prognum, versnum, procnum,
+  inproc, in, outproc, out, eachresult)
+	u_long    prognum;        /* \fIprogram number\fP */
+	u_long    versnum;        /* \fIversion number\fP */
+	u_long    procnum;        /* \fIprocedure number\fP */
+	xdrproc_t inproc;         /* \fIxdr routine for args\fP */
+	caddr_t   in;             /* \fIpointer to args\fP */
+	xdrproc_t outproc;        /* \fIxdr routine for results\fP */
+	caddr_t   out;            /* \fIpointer to results\fP */
+	bool_t    (*eachresult)();/* \fIcall with each result gotten\fP */
+.DE
+.KE
+The procedure
+.I eachresult()
+is called each time a valid result is obtained.
+It returns a boolean that indicates
+whether or not the user wants more responses.
+.ie t .DS
+.el .DS L
+.ft CW
+bool_t done;
+	. . . 
+done = eachresult(resultsp, raddr)
+	caddr_t resultsp;
+	struct sockaddr_in *raddr; /* \fIAddr of responding machine\fP */
+.DE
+If
+.I done
+is
+.I TRUE ,
+then broadcasting stops and
+.I clnt_broadcast()
+returns successfully.
+Otherwise, the routine waits for another response.
+The request is rebroadcast
+after a few seconds of waiting.
+If no responses come back,
+the routine returns with
+.I RPC_TIMEDOUT .
+.NH 2
+\&Batching
+.IX "batching"
+.IX RPC "batching"
+.LP
+The RPC architecture is designed so that clients send a call message,
+and wait for servers to reply that the call succeeded.
+This implies that clients do not compute
+while servers are processing a call.
+This is inefficient if the client does not want or need
+an acknowledgement for every message sent.
+It is possible for clients to continue computing
+while waiting for a response,
+using RPC batch facilities.
+.LP
+RPC messages can be placed in a \*Qpipeline\*U of calls
+to a desired server; this is called batching.
+Batching assumes that:
+1) each RPC call in the pipeline requires no response from the server,
+and the server does not send a response message; and
+2) the pipeline of calls is transported on a reliable
+byte stream transport such as TCP/IP.
+Since the server does not respond to every call,
+the client can generate new calls in parallel
+with the server executing previous calls.
+Furthermore, the TCP/IP implementation can buffer up
+many call messages, and send them to the server in one
+.I write()
+system call.  This overlapped execution
+greatly decreases the interprocess communication overhead of
+the client and server processes,
+and the total elapsed time of a series of calls.
+.LP
+Since the batched calls are buffered,
+the client should eventually do a nonbatched call
+in order to flush the pipeline.
+.LP
+A contrived example of batching follows.
+Assume a string rendering service (like a window system)
+has two similar calls: one renders a string and returns void results,
+while the other renders a string and remains silent.
+The service (using the TCP/IP transport) may look like:
+.ie t .DS
+.el .DS L
+.ft CW
+#include <stdio.h>
+#include <rpc/rpc.h>
+#include <suntool/windows.h>
+
+void windowdispatch();
+
+main()
+{
+	SVCXPRT *transp;
+
+	transp = svctcp_create(RPC_ANYSOCK, 0, 0);
+	if (transp == NULL){
+		fprintf(stderr, "can't create an RPC server\en");
+		exit(1);
+	}
+	pmap_unset(WINDOWPROG, WINDOWVERS);
+	if (!svc_register(transp, WINDOWPROG, WINDOWVERS,
+	  windowdispatch, IPPROTO_TCP)) {
+		fprintf(stderr, "can't register WINDOW service\en");
+		exit(1);
+	}
+	svc_run();  /* \fINever returns\fP */
+	fprintf(stderr, "should never reach this point\en");
+}
+
+void
+windowdispatch(rqstp, transp)
+	struct svc_req *rqstp;
+	SVCXPRT *transp;
+{
+	char *s = NULL;
+
+	switch (rqstp->rq_proc) {
+	case NULLPROC:
+		if (!svc_sendreply(transp, xdr_void, 0)) 
+			fprintf(stderr, "can't reply to RPC call\en");
+		return;
+	case RENDERSTRING:
+		if (!svc_getargs(transp, xdr_wrapstring, &s)) {
+			fprintf(stderr, "can't decode arguments\en");
+.ft I
+			/*
+			 * Tell caller he screwed up
+			 */
+.ft CW
+			svcerr_decode(transp);
+			break;
+		}
+.ft I
+		/*
+		 * Code here to render the string \fIs\fP
+		 */
+.ft CW
+		if (!svc_sendreply(transp, xdr_void, NULL)) 
+			fprintf(stderr, "can't reply to RPC call\en");
+		break;
+	case RENDERSTRING_BATCHED:
+		if (!svc_getargs(transp, xdr_wrapstring, &s)) {
+			fprintf(stderr, "can't decode arguments\en");
+.ft I
+			/*
+			 * We are silent in the face of protocol errors
+			 */
+.ft CW
+			break;
+		}
+.ft I
+		/*
+		 * Code here to render string s, but send no reply!
+		 */
+.ft CW
+		break;
+	default:
+		svcerr_noproc(transp);
+		return;
+	}
+.ft I
+	/*
+	 * Now free string allocated while decoding arguments
+	 */
+.ft CW
+	svc_freeargs(transp, xdr_wrapstring, &s);
+}
+.DE
+Of course the service could have one procedure
+that takes the string and a boolean
+to indicate whether or not the procedure should respond.
+.LP
+In order for a client to take advantage of batching,
+the client must perform RPC calls on a TCP-based transport
+and the actual calls must have the following attributes:
+1) the result's XDR routine must be zero
+.I NULL ),
+and 2) the RPC call's timeout must be zero.
+.KS
+.LP
+Here is an example of a client that uses batching to render a
+bunch of strings; the batching is flushed when the client gets
+a null string (EOF):
+.ie t .DS
+.el .DS L
+.ft CW
+.vs 11
+#include <stdio.h>
+#include <rpc/rpc.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <netdb.h>
+#include <suntool/windows.h>
+
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	struct hostent *hp;
+	struct timeval pertry_timeout, total_timeout;
+	struct sockaddr_in server_addr;
+	int sock = RPC_ANYSOCK;
+	register CLIENT *client;
+	enum clnt_stat clnt_stat;
+	char buf[1000], *s = buf;
+
+	if ((client = clnttcp_create(&server_addr,
+	  WINDOWPROG, WINDOWVERS, &sock, 0, 0)) == NULL) {
+		perror("clnttcp_create");
+		exit(-1);
+	}
+	total_timeout.tv_sec = 0;
+	total_timeout.tv_usec = 0;
+	while (scanf("%s", s) != EOF) {
+		clnt_stat = clnt_call(client, RENDERSTRING_BATCHED,
+			xdr_wrapstring, &s, NULL, NULL, total_timeout);
+		if (clnt_stat != RPC_SUCCESS) {
+			clnt_perror(client, "batched rpc");
+			exit(-1);
+		}
+	}
+
+	/* \fINow flush the pipeline\fP */
+
+	total_timeout.tv_sec = 20;
+	clnt_stat = clnt_call(client, NULLPROC, xdr_void, NULL,
+		xdr_void, NULL, total_timeout);
+	if (clnt_stat != RPC_SUCCESS) {
+		clnt_perror(client, "rpc");
+		exit(-1);
+	}
+	clnt_destroy(client);
+	exit(0);
+}
+.vs
+.DE
+.KE
+Since the server sends no message,
+the clients cannot be notified of any of the failures that may occur.
+Therefore, clients are on their own when it comes to handling errors.
+.LP
+The above example was completed to render
+all of the (2000) lines in the file
+.I /etc/termcap .
+The rendering service did nothing but throw the lines away.
+The example was run in the following four configurations:
+1) machine to itself, regular RPC;
+2) machine to itself, batched RPC;
+3) machine to another, regular RPC; and
+4) machine to another, batched RPC.
+The results are as follows:
+1) 50 seconds;
+2) 16 seconds;
+3) 52 seconds;
+4) 10 seconds.
+Running
+.I fscanf()
+on
+.I /etc/termcap
+only requires six seconds.
+These timings show the advantage of protocols
+that allow for overlapped execution,
+though these protocols are often hard to design.
+.NH 2
+\&Authentication
+.IX "authentication"
+.IX "RPC" "authentication"
+.LP
+In the examples presented so far,
+the caller never identified itself to the server,
+and the server never required an ID from the caller.
+Clearly, some network services, such as a network filesystem,
+require stronger security than what has been presented so far.
+.LP
+In reality, every RPC call is authenticated by
+the RPC package on the server, and similarly,
+the RPC client package generates and sends authentication parameters.
+Just as different transports (TCP/IP or UDP/IP)
+can be used when creating RPC clients and servers,
+different forms of authentication can be associated with RPC clients;
+the default authentication type used as a default is type
+.I none .
+.LP
+The authentication subsystem of the RPC package is open ended.
+That is, numerous types of authentication are easy to support.
+.NH 3
+\&UNIX Authentication
+.IX "UNIX Authentication"
+.IP "\fIThe Client Side\fP"
+.LP
+When a caller creates a new RPC client handle as in:
+.DS
+.ft CW
+clnt = clntudp_create(address, prognum, versnum,
+		      wait, sockp)
+.DE
+the appropriate transport instance defaults
+the associate authentication handle to be
+.DS
+.ft CW
+clnt->cl_auth = authnone_create();
+.DE
+The RPC client can choose to use
+.I UNIX
+style authentication by setting
+.I clnt\->cl_auth
+after creating the RPC client handle:
+.DS
+.ft CW
+clnt->cl_auth = authunix_create_default();
+.DE
+This causes each RPC call associated with
+.I clnt
+to carry with it the following authentication credentials structure:
+.ie t .DS
+.el .DS L
+.ft I
+/*
+ * UNIX style credentials.
+ */
+.ft CW
+struct authunix_parms {
+    u_long  aup_time;       /* \fIcredentials creation time\fP */
+    char    *aup_machname;  /* \fIhost name where client is\fP */
+    int     aup_uid;        /* \fIclient's UNIX effective uid\fP */
+    int     aup_gid;        /* \fIclient's current group id\fP */
+    u_int   aup_len;        /* \fIelement length of aup_gids\fP */
+    int     *aup_gids;      /* \fIarray of groups user is in\fP */
+};
+.DE
+These fields are set by
+.I authunix_create_default()
+by invoking the appropriate system calls.
+Since the RPC user created this new style of authentication,
+the user is responsible for destroying it with:
+.DS
+.ft CW
+auth_destroy(clnt->cl_auth);
+.DE
+This should be done in all cases, to conserve memory.
+.sp
+.IP "\fIThe Server Side\fP"
+.LP
+Service implementors have a harder time dealing with authentication issues
+since the RPC package passes the service dispatch routine a request
+that has an arbitrary authentication style associated with it.
+Consider the fields of a request handle passed to a service dispatch routine:
+.ie t .DS
+.el .DS L
+.ft I
+/*
+ * An RPC Service request
+ */
+.ft CW
+struct svc_req {
+    u_long    rq_prog;    	/* \fIservice program number\fP */
+    u_long    rq_vers;    	/* \fIservice protocol vers num\fP */
+    u_long    rq_proc;    	/* \fIdesired procedure number\fP */
+    struct opaque_auth rq_cred; /* \fIraw credentials from wire\fP */
+    caddr_t   rq_clntcred;  /* \fIcredentials (read only)\fP */
+};
+.DE
+The
+.I rq_cred
+is mostly opaque, except for one field of interest:
+the style or flavor of authentication credentials:
+.ie t .DS
+.el .DS L
+.ft I
+/*
+ * Authentication info.  Mostly opaque to the programmer.
+ */
+.ft CW
+struct opaque_auth {
+    enum_t  oa_flavor;  /* \fIstyle of credentials\fP */
+    caddr_t oa_base;    /* \fIaddress of more auth stuff\fP */
+    u_int   oa_length;  /* \fInot to exceed \fIMAX_AUTH_BYTES */
+};
+.DE
+.IX RPC guarantees
+The RPC package guarantees the following
+to the service dispatch routine:
+.IP  1.
+That the request's
+.I rq_cred
+is well formed.  Thus the service implementor may inspect the request's
+.I rq_cred.oa_flavor
+to determine which style of authentication the caller used.
+The service implementor may also wish to inspect the other fields of
+.I rq_cred
+if the style is not one of the styles supported by the RPC package.
+.IP  2.
+That the request's
+.I rq_clntcred
+field is either
+.I NULL 
+or points to a well formed structure
+that corresponds to a supported style of authentication credentials.
+Remember that only
+.I unix
+style is currently supported, so (currently)
+.I rq_clntcred
+could be cast to a pointer to an
+.I authunix_parms
+structure.  If
+.I rq_clntcred
+is
+.I NULL ,
+the service implementor may wish to inspect the other (opaque) fields of
+.I rq_cred
+in case the service knows about a new type of authentication
+that the RPC package does not know about.
+.LP
+Our remote users service example can be extended so that
+it computes results for all users except UID 16:
+.ie t .DS
+.el .DS L
+.ft CW
+.vs 11
+nuser(rqstp, transp)
+	struct svc_req *rqstp;
+	SVCXPRT *transp;
+{
+	struct authunix_parms *unix_cred;
+	int uid;
+	unsigned long nusers;
+
+.ft I
+	/*
+	 * we don't care about authentication for null proc
+	 */
+.ft CW
+	if (rqstp->rq_proc == NULLPROC) {
+		if (!svc_sendreply(transp, xdr_void, 0)) {
+			fprintf(stderr, "can't reply to RPC call\en");
+			return (1);
+		 }
+		 return;
+	}
+.ft I
+	/*
+	 * now get the uid
+	 */
+.ft CW
+	switch (rqstp->rq_cred.oa_flavor) {
+	case AUTH_UNIX:
+		unix_cred = 
+			(struct authunix_parms *)rqstp->rq_clntcred;
+		uid = unix_cred->aup_uid;
+		break;
+	case AUTH_NULL:
+	default:
+		svcerr_weakauth(transp);
+		return;
+	}
+	switch (rqstp->rq_proc) {
+	case RUSERSPROC_NUM:
+.ft I
+		/*
+		 * make sure caller is allowed to call this proc
+		 */
+.ft CW
+		if (uid == 16) {
+			svcerr_systemerr(transp);
+			return;
+		}
+.ft I
+		/*
+		 * Code here to compute the number of users
+		 * and assign it to the variable \fInusers\fP
+		 */
+.ft CW
+		if (!svc_sendreply(transp, xdr_u_long, &nusers)) {
+			fprintf(stderr, "can't reply to RPC call\en");
+			return (1);
+		}
+		return;
+	default:
+		svcerr_noproc(transp);
+		return;
+	}
+}
+.vs
+.DE
+A few things should be noted here.
+First, it is customary not to check
+the authentication parameters associated with the
+.I NULLPROC
+(procedure number zero).
+Second, if the authentication parameter's type is not suitable
+for your service, you should call
+.I svcerr_weakauth() .
+And finally, the service protocol itself should return status
+for access denied; in the case of our example, the protocol
+does not have such a status, so we call the service primitive
+.I svcerr_systemerr()
+instead.
+.LP
+The last point underscores the relation between
+the RPC authentication package and the services;
+RPC deals only with 
+.I authentication 
+and not with individual services' 
+.I "access control" .
+The services themselves must implement their own access control policies
+and reflect these policies as return statuses in their protocols.
+.NH 2
+\&DES Authentication
+.IX RPC DES
+.IX RPC authentication
+.LP
+UNIX authentication is quite easy to defeat.  Instead of using
+.I authunix_create_default (),
+one can call
+.I authunix_create() 
+and then modify the RPC authentication handle it returns by filling in
+whatever user ID and hostname they wish the server to think they have.
+DES authentication is thus recommended for people who want more security
+than UNIX authentication offers.
+.LP
+The details of the DES authentication protocol are complicated and
+are not explained here.  
+See
+.I "Remote Procedure Calls: Protocol Specification"
+for the details.
+.LP
+In  order for  DES authentication   to  work, the
+.I keyserv(8c) 
+daemon must be running  on both  the  server  and client machines.  The
+users on  these machines  need  public  keys  assigned by  the network
+administrator in  the
+.I publickey(5) 
+database.  And,  they  need to have decrypted  their  secret keys
+using  their  login   password.  This automatically happens when one
+logs in using
+.I login(1) ,
+or can be done manually using
+.I keylogin(1) .
+The
+.I "Network Services"
+chapter
+./" XXX
+explains more how to setup secure networking.
+.sp
+.IP "\fIClient Side\fP"
+.LP
+If a client wishes to use DES authentication, it must set its
+authentication handle appropriately.  Here is an example:
+.DS
+cl->cl_auth =
+	authdes_create(servername, 60, &server_addr, NULL);
+.DE
+The first argument is the network name or \*Qnetname\*U of the owner of
+the server process.  Typically, server processes are root processes
+and their netname can be derived using the following call:
+.DS
+char servername[MAXNETNAMELEN];
+
+host2netname(servername, rhostname, NULL);
+.DE
+Here,
+.I rhostname
+is the hostname of the machine the server process is running on.
+.I host2netname() 
+fills in
+.I servername
+to contain this root process's netname.  If the
+server process was run by a regular user, one could use the call
+.I user2netname() 
+instead.  Here is an example for a server process with the same user
+ID as the client:
+.DS
+char servername[MAXNETNAMELEN];
+
+user2netname(servername, getuid(), NULL);
+.DE
+The last argument to both of these calls,
+.I user2netname() 
+and
+.I host2netname (),
+is the name of the naming domain where the server is located.  The
+.I NULL 
+used here means \*Quse the local domain name.\*U
+.LP
+The second argument to
+.I authdes_create() 
+is a lifetime for the credential.  Here it is set to sixty
+seconds.  What that means is that the credential will expire 60
+seconds from now.  If some mischievous user tries to reuse the
+credential, the server RPC subsystem will recognize that it has
+expired and not grant any requests.  If the same mischievous user
+tries to reuse the credential within the sixty second lifetime,
+he will still be rejected because the server RPC subsystem
+remembers which credentials it has already seen in the near past,
+and will not grant requests to duplicates.
+.LP
+The third argument to
+.I authdes_create() 
+is the address of the host to synchronize with.  In order for DES
+authentication to work, the server and client must agree upon the
+time.  Here we pass the address of the server itself, so the
+client and server will both be using the same time: the server's
+time.  The argument can be
+.I NULL ,
+which means \*Qdon't bother synchronizing.\*U You should only do this
+if you are sure the client and server are already synchronized.
+.LP
+The final argument to
+.I authdes_create() 
+is the address of a DES encryption key to use for encrypting
+timestamps and data.  If this argument is
+.I NULL ,
+as it is in this example, a random key will be chosen.  The client
+may find out the encryption key being used by consulting the
+.I ah_key 
+field of the authentication handle.
+.sp
+.IP "\fIServer Side\fP"
+.LP
+The server side is a lot simpler than the client side.  Here is the
+previous example rewritten to use
+.I AUTH_DES
+instead of
+.I AUTH_UNIX :
+.ie t .DS
+.el .DS L
+.ft CW
+.vs 11
+#include <sys/time.h>
+#include <rpc/auth_des.h>
+	. . .
+	. . .
+nuser(rqstp, transp)
+	struct svc_req *rqstp;
+	SVCXPRT *transp;
+{
+	struct authdes_cred *des_cred;
+	int uid;
+	int gid;
+	int gidlen;
+	int gidlist[10];
+.ft I
+	/*
+	 * we don't care about authentication for null proc
+	 */
+.ft CW
+
+	if (rqstp->rq_proc == NULLPROC) { 
+		/* \fIsame as before\fP */
+	}
+
+.ft I
+	/*
+	 * now get the uid
+	 */
+.ft CW
+	switch (rqstp->rq_cred.oa_flavor) {
+	case AUTH_DES:
+		des_cred =
+			(struct authdes_cred *) rqstp->rq_clntcred;
+		if (! netname2user(des_cred->adc_fullname.name,
+			&uid, &gid, &gidlen, gidlist))
+		{
+			fprintf(stderr, "unknown user: %s\n",
+				des_cred->adc_fullname.name);
+			svcerr_systemerr(transp);
+			return;
+		}
+		break;
+	case AUTH_NULL:
+	default:
+		svcerr_weakauth(transp);
+		return;
+	}
+
+.ft I
+	/*
+	 * The rest is the same as before
+ 	 */	
+.ft CW
+.vs
+.DE
+Note the use of the routine
+.I netname2user (),
+the inverse of
+.I user2netname ():
+it takes a network ID and converts to a unix ID.
+.I netname2user () 
+also supplies the group IDs which we don't use in this example,
+but which may be useful to other UNIX programs.
+.NH 2
+\&Using Inetd
+.IX inetd "" "using \fIinetd\fP"
+.LP
+An RPC server can be started from
+.I inetd
+The only difference from the usual code is that the service
+creation routine should be called in the following form:
+.ie t .DS
+.el .DS L
+.ft CW
+transp = svcudp_create(0);     /* \fIFor UDP\fP */
+transp = svctcp_create(0,0,0); /* \fIFor listener TCP sockets\fP */
+transp = svcfd_create(0,0,0);  /* \fIFor connected TCP sockets\fP */
+.DE
+since
+.I inet
+passes a socket as file descriptor 0.
+Also,
+.I svc_register()
+should be called as
+.ie t .DS
+.el .DS L
+.ft CW
+svc_register(transp, PROGNUM, VERSNUM, service, 0);
+.DE
+with the final flag as 0,
+since the program would already be registered by
+.I inetd
+Remember that if you want to exit
+from the server process and return control to
+.I inet
+you need to explicitly exit, since
+.I svc_run()
+never returns.
+.LP
+The format of entries in 
+.I /etc/inetd.conf 
+for RPC services is in one of the following two forms:
+.ie t .DS
+.el .DS L
+.ft CW
+p_name/version dgram  rpc/udp wait/nowait user server args
+p_name/version stream rpc/tcp wait/nowait user server args
+.DE
+where
+.I p_name
+is the symbolic name of the program as it appears in
+.I rpc(5) ,
+.I server
+is the program implementing the server,
+and
+.I program
+and
+.I version
+are the program and version numbers of the service.
+For more information, see
+.I inetd.conf(5) .
+.LP
+If the same program handles multiple versions,
+then the version number can be a range,
+as in this example:
+.ie t .DS
+.el .DS L
+.ft CW
+rstatd/1-2 dgram rpc/udp wait root /usr/etc/rpc.rstatd
+.DE
+.NH 1
+\&More Examples
+.sp 1
+.NH 2
+\&Versions
+.IX "versions"
+.IX "RPC" "versions"
+.LP
+By convention, the first version number of program
+.I PROG
+is
+.I PROGVERS_ORIG
+and the most recent version is
+.I PROGVERS
+Suppose there is a new version of the
+.I user
+program that returns an
+.I "unsigned short"
+rather than a
+.I long .
+If we name this version
+.I RUSERSVERS_SHORT
+then a server that wants to support both versions
+would do a double register.
+.ie t .DS
+.el .DS L
+.ft CW
+if (!svc_register(transp, RUSERSPROG, RUSERSVERS_ORIG,
+  nuser, IPPROTO_TCP)) {
+	fprintf(stderr, "can't register RUSER service\en");
+	exit(1);
+}
+if (!svc_register(transp, RUSERSPROG, RUSERSVERS_SHORT,
+  nuser, IPPROTO_TCP)) {
+	fprintf(stderr, "can't register RUSER service\en");
+	exit(1);
+}
+.DE
+Both versions can be handled by the same C procedure:
+.ie t .DS
+.el .DS L
+.ft CW
+.vs 11
+nuser(rqstp, transp)
+	struct svc_req *rqstp;
+	SVCXPRT *transp;
+{
+	unsigned long nusers;
+	unsigned short nusers2;
+
+	switch (rqstp->rq_proc) {
+	case NULLPROC:
+		if (!svc_sendreply(transp, xdr_void, 0)) {
+			fprintf(stderr, "can't reply to RPC call\en");
+            return (1);
+		}
+		return;
+	case RUSERSPROC_NUM:
+.ft I
+		/*
+         * Code here to compute the number of users
+         * and assign it to the variable \fInusers\fP
+		 */
+.ft CW
+		nusers2 = nusers;
+		switch (rqstp->rq_vers) {
+		case RUSERSVERS_ORIG:
+            if (!svc_sendreply(transp, xdr_u_long, 
+		    &nusers)) {
+                fprintf(stderr,"can't reply to RPC call\en");
+			}
+			break;
+		case RUSERSVERS_SHORT:
+            if (!svc_sendreply(transp, xdr_u_short, 
+		    &nusers2)) {
+                fprintf(stderr,"can't reply to RPC call\en");
+			}
+			break;
+		}
+	default:
+		svcerr_noproc(transp);
+		return;
+	}
+}
+.vs
+.DE
+.KS
+.NH 2
+\&TCP
+.IX "TCP"
+.LP
+Here is an example that is essentially
+.I rcp.
+The initiator of the RPC
+.I snd
+call takes its standard input and sends it to the server
+.I rcv
+which prints it on standard output.
+The RPC call uses TCP.
+This also illustrates an XDR procedure that behaves differently
+on serialization than on deserialization.
+.ie t .DS
+.el .DS L
+.vs 11
+.ft I
+/*
+ * The xdr routine:
+ *		on decode, read from wire, write onto fp
+ *		on encode, read from fp, write onto wire
+ */
+.ft CW
+#include <stdio.h>
+#include <rpc/rpc.h>
+
+xdr_rcp(xdrs, fp)
+	XDR *xdrs;
+	FILE *fp;
+{
+	unsigned long size;
+	char buf[BUFSIZ], *p;
+
+	if (xdrs->x_op == XDR_FREE)/* nothing to free */
+		return 1;
+	while (1) {
+		if (xdrs->x_op == XDR_ENCODE) {
+			if ((size = fread(buf, sizeof(char), BUFSIZ,
+			  fp)) == 0 && ferror(fp)) {
+				fprintf(stderr, "can't fread\en");
+				return (1);
+			}
+		}
+		p = buf;
+		if (!xdr_bytes(xdrs, &p, &size, BUFSIZ))
+			return 0;
+		if (size == 0)
+			return 1;
+		if (xdrs->x_op == XDR_DECODE) {
+			if (fwrite(buf, sizeof(char), size,
+			  fp) != size) {
+				fprintf(stderr, "can't fwrite\en");
+				return (1);
+			}
+		}
+	}
+}
+.vs
+.DE
+.KE
+.ie t .DS
+.el .DS L
+.vs 11
+.ft I
+/*
+ * The sender routines
+ */
+.ft CW
+#include <stdio.h>
+#include <netdb.h>
+#include <rpc/rpc.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	int xdr_rcp();
+	int err;
+
+	if (argc < 2) {
+		fprintf(stderr, "usage: %s servername\en", argv[0]);
+		exit(-1);
+	}
+	if ((err = callrpctcp(argv[1], RCPPROG, RCPPROC,
+	  RCPVERS, xdr_rcp, stdin, xdr_void, 0) != 0)) {
+		clnt_perrno(err);
+		fprintf(stderr, "can't make RPC call\en");
+		exit(1);
+	}
+	exit(0);
+}
+
+callrpctcp(host, prognum, procnum, versnum,
+           inproc, in, outproc, out)
+	char *host, *in, *out;
+	xdrproc_t inproc, outproc;
+{
+	struct sockaddr_in server_addr;
+	int socket = RPC_ANYSOCK;
+	enum clnt_stat clnt_stat;
+	struct hostent *hp;
+	register CLIENT *client;
+	struct timeval total_timeout;
+
+	if ((hp = gethostbyname(host)) == NULL) {
+		fprintf(stderr, "can't get addr for '%s'\en", host);
+		return (-1);
+	}
+	bcopy(hp->h_addr, (caddr_t)&server_addr.sin_addr,
+		hp->h_length);
+	server_addr.sin_family = AF_INET;
+	server_addr.sin_port =  0;
+	if ((client = clnttcp_create(&server_addr, prognum,
+	  versnum, &socket, BUFSIZ, BUFSIZ)) == NULL) {
+		perror("rpctcp_create");
+		return (-1);
+	}
+	total_timeout.tv_sec = 20;
+	total_timeout.tv_usec = 0;
+	clnt_stat = clnt_call(client, procnum,
+		inproc, in, outproc, out, total_timeout);
+	clnt_destroy(client);
+	return (int)clnt_stat;
+}
+.vs
+.DE
+.ie t .DS
+.el .DS L
+.vs 11
+.ft I
+/*
+ * The receiving routines
+ */
+.ft CW
+#include <stdio.h>
+#include <rpc/rpc.h>
+
+main()
+{
+	register SVCXPRT *transp;
+     int rcp_service(), xdr_rcp(); 
+
+	if ((transp = svctcp_create(RPC_ANYSOCK,
+	  BUFSIZ, BUFSIZ)) == NULL) {
+		fprintf("svctcp_create: error\en");
+		exit(1);
+	}
+	pmap_unset(RCPPROG, RCPVERS);
+	if (!svc_register(transp,
+	  RCPPROG, RCPVERS, rcp_service, IPPROTO_TCP)) {
+		fprintf(stderr, "svc_register: error\en");
+		exit(1);
+	}
+	svc_run();  /* \fInever returns\fP */
+	fprintf(stderr, "svc_run should never return\en");
+}
+
+rcp_service(rqstp, transp)
+	register struct svc_req *rqstp;
+	register SVCXPRT *transp;
+{
+	switch (rqstp->rq_proc) {
+	case NULLPROC:
+		if (svc_sendreply(transp, xdr_void, 0) == 0) {
+			fprintf(stderr, "err: rcp_service");
+			return (1);
+		}
+		return;
+	case RCPPROC_FP:
+		if (!svc_getargs(transp, xdr_rcp, stdout)) {
+			svcerr_decode(transp);
+			return;
+		}
+		if (!svc_sendreply(transp, xdr_void, 0)) {
+			fprintf(stderr, "can't reply\en");
+			return;
+		}
+		return (0);
+	default:
+		svcerr_noproc(transp);
+		return;
+	}
+}
+.vs
+.DE
+.NH 2
+\&Callback Procedures
+.IX RPC "callback procedures"
+.LP
+Occasionally, it is useful to have a server become a client,
+and make an RPC call back to the process which is its client.
+An example is remote debugging,
+where the client is a window system program,
+and the server is a debugger running on the remote machine.
+Most of the time,
+the user clicks a mouse button at the debugging window,
+which converts this to a debugger command,
+and then makes an RPC call to the server
+(where the debugger is actually running),
+telling it to execute that command.
+However, when the debugger hits a breakpoint, the roles are reversed,
+and the debugger wants to make an rpc call to the window program,
+so that it can inform the user that a breakpoint has been reached.
+.LP
+In order to do an RPC callback,
+you need a program number to make the RPC call on.
+Since this will be a dynamically generated program number,
+it should be in the transient range,
+.I "0x40000000 - 0x5fffffff" .
+The routine
+.I gettransient()
+returns a valid program number in the transient range,
+and registers it with the portmapper.
+It only talks to the portmapper running on the same machine as the
+.I gettransient()
+routine itself.  The call to
+.I pmap_set()
+is a test and set operation,
+in that it indivisibly tests whether a program number
+has already been registered,
+and if it has not, then reserves it.  On return, the
+.I sockp
+argument will contain a socket that can be used
+as the argument to an
+.I svcudp_create()
+or
+.I svctcp_create()
+call.
+.ie t .DS
+.el .DS L
+.ft CW
+.vs 11
+#include <stdio.h>
+#include <rpc/rpc.h>
+#include <sys/socket.h>
+
+gettransient(proto, vers, sockp)
+	int proto, vers, *sockp;
+{
+	static int prognum = 0x40000000;
+	int s, len, socktype;
+	struct sockaddr_in addr;
+
+	switch(proto) {
+		case IPPROTO_UDP:
+			socktype = SOCK_DGRAM;
+			break;
+		case IPPROTO_TCP:
+			socktype = SOCK_STREAM;
+			break;
+		default:
+			fprintf(stderr, "unknown protocol type\en");
+			return 0;
+	}
+	if (*sockp == RPC_ANYSOCK) {
+		if ((s = socket(AF_INET, socktype, 0)) < 0) {
+			perror("socket");
+			return (0);
+		}
+		*sockp = s;
+	}
+	else
+		s = *sockp;
+	addr.sin_addr.s_addr = 0;
+	addr.sin_family = AF_INET;
+	addr.sin_port = 0;
+	len = sizeof(addr);
+.ft I
+	/*
+	 * may be already bound, so don't check for error
+	 */
+.ft CW
+	bind(s, &addr, len);
+	if (getsockname(s, &addr, &len)< 0) {
+		perror("getsockname");
+		return (0);
+	}
+	while (!pmap_set(prognum++, vers, proto, 
+		ntohs(addr.sin_port))) continue;
+	return (prognum-1);
+}
+.vs
+.DE
+.SH
+Note:
+.I
+The call to
+.I ntohs() 
+is necessary to ensure that the port number in
+.I "addr.sin_port" ,
+which is in 
+.I network 
+byte order, is passed in 
+.I host
+byte order (as
+.I pmap_set() 
+expects).  See the
+.I byteorder(3N) 
+man page for more details on the conversion of network
+addresses from network to host byte order.
+.KS
+.LP
+The following pair of programs illustrate how to use the
+.I gettransient()
+routine.
+The client makes an RPC call to the server,
+passing it a transient program number.
+Then the client waits around to receive a callback
+from the server at that program number.
+The server registers the program
+.I EXAMPLEPROG
+so that it can receive the RPC call
+informing it of the callback program number.
+Then at some random time (on receiving an
+.I ALRM
+signal in this example), it sends a callback RPC call,
+using the program number it received earlier.
+.ie t .DS
+.el .DS L
+.vs 11
+.ft I
+/*
+ * client
+ */
+.ft CW
+#include <stdio.h>
+#include <rpc/rpc.h>
+
+int callback();
+char hostname[256];
+
+main()
+{
+	int x, ans, s;
+	SVCXPRT *xprt;
+
+	gethostname(hostname, sizeof(hostname));
+	s = RPC_ANYSOCK;
+	x = gettransient(IPPROTO_UDP, 1, &s);
+	fprintf(stderr, "client gets prognum %d\en", x);
+	if ((xprt = svcudp_create(s)) == NULL) {
+	  fprintf(stderr, "rpc_server: svcudp_create\en");
+		exit(1);
+	}
+.ft I
+	/* protocol is 0 - gettransient does registering
+	 */
+.ft CW
+	(void)svc_register(xprt, x, 1, callback, 0);
+	ans = callrpc(hostname, EXAMPLEPROG, EXAMPLEVERS,
+		EXAMPLEPROC_CALLBACK, xdr_int, &x, xdr_void, 0);
+	if ((enum clnt_stat) ans != RPC_SUCCESS) {
+		fprintf(stderr, "call: ");
+		clnt_perrno(ans);
+		fprintf(stderr, "\en");
+	}
+	svc_run();
+	fprintf(stderr, "Error: svc_run shouldn't return\en");
+}
+
+callback(rqstp, transp)
+	register struct svc_req *rqstp;
+	register SVCXPRT *transp;
+{
+	switch (rqstp->rq_proc) {
+		case 0:
+			if (!svc_sendreply(transp, xdr_void, 0)) {
+				fprintf(stderr, "err: exampleprog\en");
+				return (1);
+			}
+			return (0);
+		case 1:
+			if (!svc_getargs(transp, xdr_void, 0)) {
+				svcerr_decode(transp);
+				return (1);
+			}
+			fprintf(stderr, "client got callback\en");
+			if (!svc_sendreply(transp, xdr_void, 0)) {
+				fprintf(stderr, "err: exampleprog");
+				return (1);
+			}
+	}
+}
+.vs
+.DE
+.KE
+.ie t .DS
+.el .DS L
+.vs 11
+.ft I
+/*
+ * server
+ */
+.ft CW
+#include <stdio.h>
+#include <rpc/rpc.h>
+#include <sys/signal.h>
+
+char *getnewprog();
+char hostname[256];
+int docallback();
+int pnum;		/* \fIprogram number for callback routine\fP */
+
+main()
+{
+	gethostname(hostname, sizeof(hostname));
+	registerrpc(EXAMPLEPROG, EXAMPLEVERS,
+	  EXAMPLEPROC_CALLBACK, getnewprog, xdr_int, xdr_void);
+	fprintf(stderr, "server going into svc_run\en");
+	signal(SIGALRM, docallback);
+	alarm(10);
+	svc_run();
+	fprintf(stderr, "Error: svc_run shouldn't return\en");
+}
+
+char *
+getnewprog(pnump)
+	char *pnump;
+{
+	pnum = *(int *)pnump;
+	return NULL;
+}
+
+docallback()
+{
+	int ans;
+
+	ans = callrpc(hostname, pnum, 1, 1, xdr_void, 0,
+		xdr_void, 0);
+	if (ans != 0) {
+		fprintf(stderr, "server: ");
+		clnt_perrno(ans);
+		fprintf(stderr, "\en");
+	}
+}
+.vs
+.DE
diff --git a/lib/libc/rpc/PSD.doc/rpc.rfc.ms b/lib/libc/rpc/PSD.doc/rpc.rfc.ms
new file mode 100644
index 0000000..af9c2df
--- /dev/null
+++ b/lib/libc/rpc/PSD.doc/rpc.rfc.ms
@@ -0,0 +1,1302 @@
+.\"
+.\" Must use  --  tbl  --  with this one
+.\"
+.\" @(#)rpc.rfc.ms	2.2 88/08/05 4.0 RPCSRC
+.de BT
+.if \\n%=1 .tl ''- % -''
+..
+.ND
+.\" prevent excess underlining in nroff
+.if n .fp 2 R
+.OH 'Remote Procedure Calls: Protocol Specification''Page %'
+.EH 'Page %''Remote Procedure Calls: Protocol Specification'
+.if \\n%=1 .bp
+.SH
+\&Remote Procedure Calls: Protocol Specification
+.LP
+.NH 0
+\&Status of this Memo
+.LP
+Note: This chapter specifies a protocol that Sun Microsystems, Inc.,
+and others are using.  
+It has been designated RFC1050 by the ARPA Network
+Information Center.
+.LP
+.NH 1
+\&Introduction
+.LP
+This chapter specifies  a  message protocol  used in implementing
+Sun's Remote Procedure Call (RPC) package.  (The message protocol is
+specified with the External Data Representation (XDR) language.
+See the
+.I "External Data Representation Standard: Protocol Specification"
+for the details.  Here, we assume that  the  reader is familiar  
+with XDR and do not attempt to justify it or its uses).  The paper
+by Birrell and Nelson [1]  is recommended as an  excellent background
+to  and justification of RPC.
+.NH 2
+\&Terminology
+.LP
+This chapter discusses servers, services, programs, procedures,
+clients, and versions.  A server is a piece of software where network
+services are implemented.  A network service is a collection of one
+or more remote programs.  A remote program implements one or more
+remote procedures; the procedures, their parameters, and results are
+documented in the specific program's protocol specification (see the
+\fIPort Mapper Program Protocol\fP\, below, for an example).  Network
+clients are pieces of software that initiate remote procedure calls
+to services.  A server may support more than one version of a remote
+program in order to be forward compatible with changing protocols.
+.LP
+For example, a network file service may be composed of two programs.
+One program may deal with high-level applications such as file system
+access control and locking.  The other may deal with low-level file
+IO and have procedures like "read" and "write".  A client machine of
+the network file service would call the procedures associated with
+the two programs of the service on behalf of some user on the client
+machine.
+.NH 2
+\&The RPC Model
+.LP
+The remote procedure call model is similar to the local procedure
+call model.  In the local case, the caller places arguments to a
+procedure in some well-specified location (such as a result
+register).  It then transfers control to the procedure, and
+eventually gains back control.  At that point, the results of the
+procedure are extracted from the well-specified location, and the
+caller continues execution.
+.LP
+The remote procedure call is similar, in that one thread of control
+logically winds through two processes\(emone is the caller's process,
+the other is a server's process.  That is, the caller process sends a
+call message to the server process and waits (blocks) for a reply
+message.  The call message contains the procedure's parameters, among
+other things.  The reply message contains the procedure's results,
+among other things.  Once the reply message is received, the results
+of the procedure are extracted, and caller's execution is resumed.
+.LP
+On the server side, a process is dormant awaiting the arrival of a
+call message.  When one arrives, the server process extracts the
+procedure's parameters, computes the results, sends a reply message,
+and then awaits the next call message.
+.LP
+Note that in this model, only one of the two processes is active at
+any given time.  However, this model is only given as an example.
+The RPC protocol makes no restrictions on the concurrency model
+implemented, and others are possible.  For example, an implementation
+may choose to have RPC calls be asynchronous, so that the client may
+do useful work while waiting for the reply from the server.  Another
+possibility is to have the server create a task to process an
+incoming request, so that the server can be free to receive other
+requests.
+.NH 2
+\&Transports and Semantics
+.LP
+The RPC protocol is independent of transport protocols.  That is, RPC
+does not care how a message is passed from one process to another.
+The protocol deals only with specification and interpretation of
+messages.
+.LP
+It is important to point out that RPC does not try to implement any
+kind of reliability and that the application must be aware of the
+type of transport protocol underneath RPC.  If it knows it is running
+on top of a reliable transport such as TCP/IP[6], then most of the
+work is already done for it.  On the other hand, if it is running on
+top of an unreliable transport such as UDP/IP[7], it must implement
+is own retransmission and time-out policy as the RPC layer does not
+provide this service.
+.LP
+Because of transport independence, the RPC protocol does not attach
+specific semantics to the remote procedures or their execution.
+Semantics can be inferred from (but should be explicitly specified
+by) the underlying transport protocol.  For example, consider RPC
+running on top of an unreliable transport such as UDP/IP.  If an
+application retransmits RPC messages after short time-outs, the only
+thing it can infer if it receives no reply is that the procedure was
+executed zero or more times.  If it does receive a reply, then it can
+infer that the procedure was executed at least once.
+.LP
+A server may wish to remember previously granted requests from a
+client and not regrant them in order to insure some degree of
+execute-at-most-once semantics.  A server can do this by taking
+advantage of the transaction ID that is packaged with every RPC
+request.  The main use of this transaction is by the client RPC layer
+in matching replies to requests.  However, a client application may
+choose to reuse its previous transaction ID when retransmitting a
+request.  The server application, knowing this fact, may choose to
+remember this ID after granting a request and not regrant requests
+with the same ID in order to achieve some degree of
+execute-at-most-once semantics.  The server is not allowed to examine
+this ID in any other way except as a test for equality.
+.LP
+On the other hand, if using a reliable transport such as TCP/IP, the
+application can infer from a reply message that the procedure was
+executed exactly once, but if it receives no reply message, it cannot
+assume the remote procedure was not executed.  Note that even if a
+connection-oriented protocol like TCP is used, an application still
+needs time-outs and reconnection to handle server crashes.
+.LP
+There are other possibilities for transports besides datagram- or
+connection-oriented protocols.  For example, a request-reply protocol
+such as VMTP[2] is perhaps the most natural transport for RPC.
+.SH
+.I
+NOTE:  At Sun, RPC is currently implemented on top of both TCP/IP
+and UDP/IP transports.
+.LP
+.NH 2
+\&Binding and Rendezvous Independence
+.LP
+The act of binding a client to a service is NOT part of the remote
+procedure call specification.  This important and necessary function
+is left up to some higher-level software.  (The software may use RPC
+itself\(emsee the \fIPort Mapper Program Protocol\fP\, below).
+.LP
+Implementors should think of the RPC protocol as the jump-subroutine
+instruction ("JSR") of a network; the loader (binder) makes JSR
+useful, and the loader itself uses JSR to accomplish its task.
+Likewise, the network makes RPC useful, using RPC to accomplish this
+task.
+.NH 2
+\&Authentication
+.LP
+The RPC protocol provides the fields necessary for a client to
+identify itself to a service and vice-versa.  Security and access
+control mechanisms can be built on top of the message authentication.
+Several different authentication protocols can be supported.  A field
+in the RPC header indicates which protocol is being used.  More
+information on specific authentication protocols can be found in the
+\fIAuthentication Protocols\fP\,
+below.
+.KS
+.NH 1
+\&RPC Protocol Requirements
+.LP
+The RPC protocol must provide for the following:
+.IP  1.
+Unique specification of a procedure to be called.
+.IP  2.
+Provisions for matching response messages to request messages.
+.KE
+.IP  3.
+Provisions for authenticating the caller to service and vice-versa.
+.LP
+Besides these requirements, features that detect the following are
+worth supporting because of protocol roll-over errors, implementation
+bugs, user error, and network administration:
+.IP  1.
+RPC protocol mismatches.
+.IP  2.
+Remote program protocol version mismatches.
+.IP  3.
+Protocol errors (such as misspecification of a procedure's parameters).
+.IP  4.
+Reasons why remote authentication failed.
+.IP  5.
+Any other reasons why the desired procedure was not called.
+.NH 2
+\&Programs and Procedures
+.LP
+The RPC call message has three unsigned fields:  remote program
+number, remote program version number, and remote procedure number.
+The three fields uniquely identify the procedure to be called.
+Program numbers are administered by some central authority (like
+Sun).  Once an implementor has a program number, he can implement his
+remote program; the first implementation would most likely have the
+version number of 1.  Because most new protocols evolve into better,
+stable, and mature protocols, a version field of the call message
+identifies which version of the protocol the caller is using.
+Version numbers make speaking old and new protocols through the same
+server process possible.
+.LP
+The procedure number identifies the procedure to be called.  These
+numbers are documented in the specific program's protocol
+specification.  For example, a file service's protocol specification
+may state that its procedure number 5 is "read" and procedure number
+12 is "write".
+.LP
+Just as remote program protocols may change over several versions,
+the actual RPC message protocol could also change.  Therefore, the
+call message also has in it the RPC version number, which is always
+equal to two for the version of RPC described here.
+.LP
+The reply message to a request  message  has enough  information to
+distinguish the following error conditions:
+.IP  1.
+The remote implementation of RPC does speak protocol version 2.
+The lowest and highest supported RPC version numbers are returned.
+.IP  2.
+The remote program is not available on the remote system.
+.IP  3.
+The remote program does not support the requested version number.
+The lowest and highest supported remote program version numbers are
+returned.
+.IP  4.
+The requested procedure number does not exist.  (This is usually a
+caller side protocol or programming error.)
+.IP  5.
+The parameters to the remote procedure appear to be garbage from the
+server's point of view.  (Again, this is usually caused by a
+disagreement about the protocol between client and service.)
+.NH 2
+\&Authentication
+.LP
+Provisions for authentication of caller to service and vice-versa are
+provided as a part of the RPC protocol.  The call message has two
+authentication fields, the credentials and verifier.  The reply
+message has one authentication field, the response verifier.  The RPC
+protocol specification defines all three fields to be the following
+opaque type:
+.DS
+.ft CW
+.vs 11
+enum auth_flavor {
+    AUTH_NULL        = 0,
+    AUTH_UNIX        = 1,
+    AUTH_SHORT       = 2,
+    AUTH_DES         = 3
+    /* \fIand more to be defined\fP */
+};
+
+struct opaque_auth {
+    auth_flavor flavor;
+    opaque body<400>;
+};
+.DE
+.LP
+In simple English, any
+.I opaque_auth 
+structure is an 
+.I auth_flavor 
+enumeration followed by bytes which are  opaque to the RPC protocol
+implementation.
+.LP
+The interpretation and semantics  of the data contained  within the
+authentication   fields  is specified  by  individual,  independent
+authentication  protocol specifications.   (See 
+\fIAuthentication Protocols\fP\,
+below, for definitions of the various authentication protocols.)
+.LP
+If authentication parameters were   rejected, the  response message
+contains information stating why they were rejected.
+.NH 2
+\&Program Number Assignment
+.LP
+Program numbers are given out in groups of
+.I 0x20000000 
+(decimal 536870912) according to the following chart:
+.TS
+box tab (&) ;
+lfI lfI
+rfL cfI .
+Program Numbers&Description
+_
+.sp .5
+0 - 1fffffff&Defined by Sun
+20000000 - 3fffffff&Defined by user
+40000000 - 5fffffff&Transient
+60000000 - 7fffffff&Reserved
+80000000 - 9fffffff&Reserved
+a0000000 - bfffffff&Reserved
+c0000000 - dfffffff&Reserved
+e0000000 - ffffffff&Reserved
+.TE
+.LP
+The first group is a range of numbers administered by Sun
+Microsystems and should be identical for all sites.  The second range
+is for applications peculiar to a particular site.  This range is
+intended primarily for debugging new programs.  When a site develops
+an application that might be of general interest, that application
+should be given an assigned number in the first range.  The third
+group is for applications that generate program numbers dynamically.
+The final groups are reserved for future use, and should not be used.
+.NH 2
+\&Other Uses of the RPC Protocol
+.LP
+The intended use of this protocol is for calling remote procedures.
+That is, each call message is matched with a response message.
+However, the protocol itself is a message-passing protocol with which
+other (non-RPC) protocols can be implemented.  Sun currently uses, or
+perhaps abuses, the RPC message protocol for the following two
+(non-RPC) protocols:  batching (or pipelining) and broadcast RPC.
+These two protocols are discussed but not defined below.
+.NH 3
+\&Batching
+.LP
+Batching allows a client to send an arbitrarily large sequence of
+call messages to a server; batching typically uses reliable byte
+stream protocols (like TCP/IP) for its transport.  In the case of
+batching, the client never waits for a reply from the server, and the
+server does not send replies to batch requests.  A sequence of batch
+calls is usually terminated by a legitimate RPC in order to flush the
+pipeline (with positive acknowledgement).
+.NH 3
+\&Broadcast RPC
+.LP
+In broadcast RPC-based protocols, the client sends a broadcast packet
+to the network and waits for numerous replies.  Broadcast RPC uses
+unreliable, packet-based protocols (like UDP/IP) as its transports.
+Servers that support broadcast protocols only respond when the
+request is successfully processed, and are silent in the face of
+errors.  Broadcast RPC uses the Port Mapper RPC service to achieve
+its semantics.  See the \fIPort Mapper Program Protocol\fP\, below,
+for more information.
+.KS
+.NH 1
+\&The RPC Message Protocol
+.LP
+This section defines the RPC message protocol in the XDR data
+description language.  The message is defined in a top-down style.
+.ie t .DS
+.el .DS L
+.ft CW
+enum msg_type {
+	CALL  = 0,
+	REPLY = 1
+};
+
+.ft I
+/*
+* A reply to a call message can take on two forms:
+* The message was either accepted or rejected.
+*/
+.ft CW
+enum reply_stat {
+	MSG_ACCEPTED = 0,
+	MSG_DENIED   = 1
+};
+
+.ft I
+/*
+* Given that a call message was accepted,  the following is the
+* status of an attempt to call a remote procedure.
+*/
+.ft CW
+enum accept_stat {
+	SUCCESS       = 0, /* \fIRPC executed successfully       \fP*/
+	PROG_UNAVAIL  = 1, /* \fIremote hasn't exported program  \fP*/
+	PROG_MISMATCH = 2, /* \fIremote can't support version #  \fP*/
+	PROC_UNAVAIL  = 3, /* \fIprogram can't support procedure \fP*/
+	GARBAGE_ARGS  = 4  /* \fIprocedure can't decode params   \fP*/
+};
+.DE
+.ie t .DS
+.el .DS L
+.ft I
+/*
+* Reasons why a call message was rejected:
+*/
+.ft CW
+enum reject_stat {
+	RPC_MISMATCH = 0, /* \fIRPC version number != 2          \fP*/
+	AUTH_ERROR = 1    /* \fIremote can't authenticate caller \fP*/
+};
+
+.ft I
+/*
+* Why authentication failed:
+*/
+.ft CW
+enum auth_stat {
+	AUTH_BADCRED      = 1,  /* \fIbad credentials \fP*/
+	AUTH_REJECTEDCRED = 2,  /* \fIclient must begin new session \fP*/
+	AUTH_BADVERF      = 3,  /* \fIbad verifier \fP*/
+	AUTH_REJECTEDVERF = 4,  /* \fIverifier expired or replayed  \fP*/
+	AUTH_TOOWEAK      = 5   /* \fIrejected for security reasons \fP*/
+};
+.DE
+.KE
+.ie t .DS
+.el .DS L
+.ft I
+/*
+* The  RPC  message: 
+* All   messages  start with   a transaction  identifier,  xid,
+* followed  by a  two-armed  discriminated union.   The union's
+* discriminant is a  msg_type which switches to  one of the two
+* types   of the message.   The xid  of a \fIREPLY\fP  message always
+* matches  that of the initiating \fICALL\fP   message.   NB: The xid
+* field is only  used for clients  matching reply messages with
+* call messages  or for servers detecting  retransmissions; the
+* service side  cannot treat this id  as any type   of sequence
+* number.
+*/
+.ft CW
+struct rpc_msg {
+	unsigned int xid;
+	union switch (msg_type mtype) {
+		case CALL:
+			call_body cbody;
+		case REPLY:  
+			reply_body rbody;
+	} body;
+};
+.DE
+.ie t .DS
+.el .DS L
+.ft I
+/*
+* Body of an RPC request call: 
+* In version 2 of the  RPC protocol specification, rpcvers must
+* be equal to 2.  The  fields prog,  vers, and proc specify the
+* remote program, its version number, and the  procedure within
+* the remote program to be called.  After these  fields are two
+* authentication  parameters: cred (authentication credentials)
+* and verf  (authentication verifier).  The  two authentication
+* parameters are   followed by  the  parameters  to  the remote
+* procedure,  which  are specified  by  the  specific   program
+* protocol.
+*/
+.ft CW
+struct call_body {
+	unsigned int rpcvers;  /* \fImust be equal to two (2) \fP*/
+	unsigned int prog;
+	unsigned int vers;
+	unsigned int proc;
+	opaque_auth cred;
+	opaque_auth verf;
+	/* \fIprocedure specific parameters start here \fP*/
+};
+.DE
+.ie t .DS
+.el .DS L
+.ft I
+/*
+* Body of a reply to an RPC request:
+* The call message was either accepted or rejected.
+*/
+.ft CW
+union reply_body switch (reply_stat stat) {
+	case MSG_ACCEPTED:  
+		accepted_reply areply;
+	case MSG_DENIED:  
+		rejected_reply rreply;
+} reply;
+.DE
+.ie t .DS
+.el .DS L
+.ft I
+/*
+* Reply to   an RPC request  that  was accepted  by the server:
+* there could be an error even though the request was accepted.
+* The first field is an authentication verifier that the server
+* generates in order to  validate itself  to the caller.  It is
+* followed by    a  union whose     discriminant  is   an  enum
+* accept_stat.  The  \fISUCCESS\fP  arm of    the union  is  protocol
+* specific.  The \fIPROG_UNAVAIL\fP, \fIPROC_UNAVAIL\fP, and \fIGARBAGE_ARGP\fP
+* arms of the union are void.   The \fIPROG_MISMATCH\fP arm specifies
+* the lowest and highest version numbers of the  remote program
+* supported by the server.
+*/
+.ft CW
+struct accepted_reply {
+	opaque_auth verf;
+	union switch (accept_stat stat) {
+		case SUCCESS:
+			opaque results[0];
+			/* \fIprocedure-specific results start here\fP */
+		case PROG_MISMATCH:
+			struct {
+				unsigned int low;
+				unsigned int high;
+			} mismatch_info;
+		default:
+.ft I
+			/*
+			* Void.  Cases include \fIPROG_UNAVAIL, PROC_UNAVAIL\fP,
+			* and \fIGARBAGE_ARGS\fP.
+			*/
+.ft CW
+			void;
+	} reply_data;
+};
+.DE
+.ie t .DS
+.el .DS L
+.ft I
+/*
+* Reply to an RPC request that was rejected by the server: 
+* The request  can   be rejected for   two reasons:  either the
+* server   is not  running a   compatible  version  of the  RPC
+* protocol    (\fIRPC_MISMATCH\fP), or    the  server   refuses    to
+* authenticate the  caller  (\fIAUTH_ERROR\fP).  In  case of  an  RPC
+* version mismatch,  the server returns the  lowest and highest
+* supported    RPC  version    numbers.  In   case   of refused
+* authentication, failure status is returned.
+*/
+.ft CW
+union rejected_reply switch (reject_stat stat) {
+	case RPC_MISMATCH:
+		struct {
+			unsigned int low;
+			unsigned int high;
+		} mismatch_info;
+	case AUTH_ERROR: 
+		auth_stat stat;
+};
+.DE
+.NH 1
+\&Authentication Protocols
+.LP
+As previously stated, authentication parameters are opaque, but
+open-ended to the rest of the RPC protocol.  This section defines
+some "flavors" of authentication implemented at (and supported by)
+Sun.  Other sites are free to invent new authentication types, with
+the same rules of flavor number assignment as there is for program
+number assignment.
+.NH 2
+\&Null Authentication
+.LP
+Often calls must be made where the caller does not know who he is or
+the server does not care who the caller is.  In this case, the flavor
+value (the discriminant of the \fIopaque_auth\fP's union) of the RPC
+message's credentials, verifier, and response verifier is
+.I AUTH_NULL .
+The  bytes of the opaque_auth's body  are undefined.
+It is recommended that the opaque length be zero.
+.NH 2
+\&UNIX Authentication
+.LP
+The caller of a remote procedure may wish to identify himself as he
+is identified on a UNIX system.  The  value of the credential's
+discriminant of an RPC call  message is  
+.I AUTH_UNIX .
+The bytes of
+the credential's opaque body encode the following structure:
+.DS
+.ft CW
+struct auth_unix {
+	unsigned int stamp;
+	string machinename<255>;
+	unsigned int uid;
+	unsigned int gid;
+	unsigned int gids<10>;
+};
+.DE
+The 
+.I stamp 
+is an  arbitrary    ID which the  caller machine   may
+generate.  The 
+.I machinename 
+is the  name of the  caller's machine (like  "krypton").  The 
+.I uid 
+is  the caller's effective user  ID.  The  
+.I gid 
+is  the caller's effective  group  ID.  The 
+.I gids 
+is  a
+counted array of groups which contain the caller as  a member.  The
+verifier accompanying the  credentials  should  be  of  
+.I AUTH_NULL
+(defined above).
+.LP
+The value of the discriminant of  the response verifier received in
+the  reply  message  from  the    server  may   be   
+.I AUTH_NULL 
+or
+.I AUTH_SHORT .
+In  the  case  of 
+.I AUTH_SHORT ,
+the bytes of the response verifier's string encode an opaque
+structure.  This new opaque structure may now be passed to the server
+instead of the original
+.I AUTH_UNIX
+flavor credentials.  The server keeps a cache which maps shorthand
+opaque structures (passed back by way of an
+.I AUTH_SHORT
+style response verifier) to the original credentials of the caller.
+The caller can save network bandwidth and server cpu cycles by using
+the new credentials.
+.LP
+The server may flush the shorthand opaque structure at any time.  If
+this happens, the remote procedure call message will be rejected due
+to an authentication error.  The reason for the failure will be
+.I AUTH_REJECTEDCRED .
+At this point, the caller may wish to try the original
+.I AUTH_UNIX
+style of credentials.
+.KS
+.NH 2
+\&DES Authentication
+.LP
+UNIX authentication suffers from two major problems:
+.IP  1.
+The naming is too UNIX-system oriented.
+.IP  2.
+There is no verifier, so credentials can easily be faked.
+.LP
+DES authentication attempts to fix these two problems.
+.KE
+.NH 3
+\&Naming
+.LP
+The first problem is handled by addressing the caller by a simple
+string of characters instead of by an operating system specific
+integer.  This string of characters is known as the "netname" or
+network name of the caller.  The server is not allowed to interpret
+the contents of the caller's name in any other way except to
+identify the caller.  Thus, netnames should be unique for every
+caller in the internet.
+.LP
+It is up to each operating system's implementation of DES
+authentication to generate netnames for its users that insure this
+uniqueness when they call upon remote servers.  Operating systems
+already know how to distinguish users local to their systems.  It is
+usually a simple matter to extend this mechanism to the network.
+For example, a UNIX user at Sun with a user ID of 515 might be
+assigned the following netname: "unix.515@sun.com".  This netname
+contains three items that serve to insure it is unique.  Going
+backwards, there is only one naming domain called "sun.com" in the
+internet.  Within this domain, there is only one UNIX user with
+user ID 515.  However, there may be another user on another
+operating system, for example VMS, within the same naming domain
+that, by coincidence, happens to have the same user ID.  To insure
+that these two users can be distinguished we add the operating
+system name.  So one user is "unix.515@sun.com" and the other is
+"vms.515@sun.com".
+.LP
+The first field is actually a naming method rather than an
+operating system name.  It just happens that today there is almost
+a one-to-one correspondence between naming methods and operating
+systems.  If the world could agree on a naming standard, the first
+field could be the name of that standard, instead of an operating
+system name.
+.LP
+.NH 3
+\&DES Authentication Verifiers
+.LP
+Unlike UNIX authentication, DES authentication does have a verifier
+so the server can validate the client's credential (and
+vice-versa).  The contents of this verifier is primarily an
+encrypted timestamp.  The server can decrypt this timestamp, and if
+it is close to what the real time is, then the client must have
+encrypted it correctly.  The only way the client could encrypt it
+correctly is to know the "conversation key" of the RPC session.  And
+if the client knows the conversation key, then it must be the real
+client.
+.LP
+The conversation key is a DES [5] key which the client generates
+and notifies the server of in its first RPC call.  The conversation
+key is encrypted using a public key scheme in this first
+transaction.  The particular public key scheme used in DES
+authentication is Diffie-Hellman [3] with 192-bit keys.  The
+details of this encryption method are described later.
+.LP
+The client and the server need the same notion of the current time
+in order for all of this to work.  If network time synchronization
+cannot be guaranteed, then client can synchronize with the server
+before beginning the conversation, perhaps by consulting the
+Internet Time Server (TIME[4]).
+.LP
+The way a server determines if a client timestamp is valid is
+somewhat complicated.  For any other transaction but the first, the
+server just checks for two things:
+.IP  1.
+the timestamp is greater than the one previously seen from the
+same client.
+.IP  2.
+the timestamp has not expired.
+.LP
+A timestamp is expired if the server's time is later than the sum
+of the client's timestamp plus what is known as the client's
+"window".  The "window" is a number the client passes (encrypted)
+to the server in its first transaction.  You can think of it as a
+lifetime for the credential.
+.LP
+This explains everything but the first transaction.  In the first
+transaction, the server checks only that the timestamp has not
+expired.  If this was all that was done though, then it would be
+quite easy for the client to send random data in place of the
+timestamp with a fairly good chance of succeeding.  As an added
+check, the client sends an encrypted item in the first transaction
+known as the "window verifier" which must be equal to the window
+minus 1, or the server will reject the credential.
+.LP
+The client too must check the verifier returned from the server to
+be sure it is legitimate.  The server sends back to the client the
+encrypted timestamp it received from the client, minus one second.
+If the client gets anything different than this, it will reject it.
+.LP
+.NH 3
+\&Nicknames and Clock Synchronization
+.LP
+After the first transaction, the server's DES authentication
+subsystem returns in its verifier to the client an integer
+"nickname" which the client may use in its further transactions
+instead of passing its netname, encrypted DES key and window every
+time.  The nickname is most likely an index into a table on the
+server which stores for each client its netname, decrypted DES key
+and window.
+.LP
+Though they originally were synchronized, the client's and server's
+clocks can get out of sync again.  When this happens the client RPC
+subsystem most likely will get back
+.I RPC_AUTHERROR 
+at which point it should resynchronize.
+.LP
+A client may still get the
+.I RPC_AUTHERROR 
+error even though it is
+synchronized with the server.  The reason is that the server's
+nickname table is a limited size, and it may flush entries whenever
+it wants.  A client should resend its original credential in this
+case and the server will give it a new nickname.  If a server
+crashes, the entire nickname table gets flushed, and all clients
+will have to resend their original credentials.
+.KS
+.NH 3
+\&DES Authentication Protocol (in XDR language)
+.ie t .DS
+.el .DS L
+.ft I
+/*
+* There are two kinds of credentials: one in which the client uses
+* its full network name, and one in which it uses its "nickname"
+* (just an unsigned integer) given to it by the server.  The
+* client must use its fullname in its first transaction with the
+* server, in which the server will return to the client its
+* nickname.  The client may use its nickname in all further
+* transactions with the server.  There is no requirement to use the
+* nickname, but it is wise to use it for performance reasons.
+*/
+.ft CW
+enum authdes_namekind {
+	ADN_FULLNAME = 0,
+	ADN_NICKNAME = 1
+};
+
+.ft I
+/*
+* A 64-bit block of encrypted DES data
+*/
+.ft CW
+typedef opaque des_block[8];
+
+.ft I
+/*
+* Maximum length of a network user's name
+*/
+.ft CW
+const MAXNETNAMELEN = 255;
+
+.ft I
+/*
+* A fullname contains the network name of the client, an encrypted
+* conversation key and the window.  The window is actually a
+* lifetime for the credential.  If the time indicated in the
+* verifier timestamp plus the window has past, then the server
+* should expire the request and not grant it.  To insure that
+* requests are not replayed, the server should insist that
+* timestamps are greater than the previous one seen, unless it is
+* the first transaction.  In the first transaction, the server
+* checks instead that the window verifier is one less than the
+* window.
+*/
+.ft CW
+struct authdes_fullname {
+string name<MAXNETNAMELEN>;  /* \fIname of client \f(CW*/
+des_block key;               /* \fIPK encrypted conversation key \f(CW*/
+unsigned int window;         /* \fIencrypted window \f(CW*/
+};
+
+.ft I
+/*
+* A credential is either a fullname or a nickname
+*/
+.ft CW
+union authdes_cred switch (authdes_namekind adc_namekind) {
+	case ADN_FULLNAME:
+		authdes_fullname adc_fullname;
+	case ADN_NICKNAME:
+		unsigned int adc_nickname;
+};
+
+.ft I
+/*
+* A timestamp encodes the time since midnight, January 1, 1970.
+*/
+.ft CW
+struct timestamp {
+	unsigned int seconds;    /* \fIseconds \fP*/
+	unsigned int useconds;   /* \fIand microseconds \fP*/
+};
+
+.ft I
+/*
+* Verifier: client variety
+* The window verifier is only used in the first transaction.  In
+* conjunction with a fullname credential, these items are packed
+* into the following structure before being encrypted:
+*
+* \f(CWstruct {\fP
+*     \f(CWadv_timestamp;            \fP-- one DES block
+*     \f(CWadc_fullname.window;      \fP-- one half DES block
+*     \f(CWadv_winverf;              \fP-- one half DES block
+* \f(CW}\fP
+* This structure is encrypted using CBC mode encryption with an
+* input vector of zero.  All other encryptions of timestamps use
+* ECB mode encryption.
+*/
+.ft CW
+struct authdes_verf_clnt {
+	timestamp adv_timestamp;    /* \fIencrypted timestamp       \fP*/
+	unsigned int adv_winverf;   /* \fIencrypted window verifier \fP*/
+};
+
+.ft I
+/*
+* Verifier: server variety
+* The server returns (encrypted) the same timestamp the client
+* gave it minus one second.  It also tells the client its nickname
+* to be used in future transactions (unencrypted).
+*/
+.ft CW
+struct authdes_verf_svr {
+timestamp adv_timeverf;     /* \fIencrypted verifier      \fP*/
+unsigned int adv_nickname;  /* \fInew nickname for client \fP*/
+};
+.DE
+.KE
+.NH 3
+\&Diffie-Hellman Encryption
+.LP
+In this scheme, there are two constants,
+.I BASE 
+and
+.I MODULUS .
+The
+particular values Sun has chosen for these for the DES
+authentication protocol are:
+.ie t .DS
+.el .DS L
+.ft CW
+const BASE = 3;
+const MODULUS = 
+        "d4a0ba0250b6fd2ec626e7efd637df76c716e22d0944b88b"; /* \fIhex \fP*/
+.DE
+.ft R
+The way this scheme works is best explained by an example.  Suppose
+there are two people "A" and "B" who want to send encrypted
+messages to each other.  So, A and B both generate "secret" keys at
+random which they do not reveal to anyone.  Let these keys be
+represented as SK(A) and SK(B).  They also publish in a public
+directory their "public" keys.  These keys are computed as follows:
+.ie t .DS
+.el .DS L
+.ft CW
+PK(A) = ( BASE ** SK(A) ) mod MODULUS
+PK(B) = ( BASE ** SK(B) ) mod MODULUS
+.DE
+.ft R
+The "**" notation is used here to represent exponentiation.  Now,
+both A and B can arrive at the "common" key between them,
+represented here as CK(A, B), without revealing their secret keys.
+.LP
+A computes:
+.ie t .DS
+.el .DS L
+.ft CW
+CK(A, B) = ( PK(B) ** SK(A)) mod MODULUS
+.DE
+.ft R
+while B computes:
+.ie t .DS
+.el .DS L
+.ft CW
+CK(A, B) = ( PK(A) ** SK(B)) mod MODULUS
+.DE
+.ft R
+These two can be shown to be equivalent:
+.ie t .DS
+.el .DS L
+.ft CW
+(PK(B) ** SK(A)) mod MODULUS = (PK(A) ** SK(B)) mod MODULUS
+.DE
+.ft R
+We drop the "mod MODULUS" parts and assume modulo arithmetic to
+simplify things:
+.ie t .DS
+.el .DS L
+.ft CW
+PK(B) ** SK(A) = PK(A) ** SK(B)
+.DE
+.ft R
+Then, replace PK(B) by what B computed earlier and likewise for
+PK(A).
+.ie t .DS
+.el .DS L
+.ft CW
+((BASE ** SK(B)) ** SK(A) = (BASE ** SK(A)) ** SK(B)
+.DE
+.ft R
+which leads to:
+.ie t .DS
+.el .DS L
+.ft CW
+BASE ** (SK(A) * SK(B)) = BASE ** (SK(A) * SK(B))
+.DE
+.ft R
+This common key CK(A, B) is not used to encrypt the timestamps used
+in the protocol.  Rather, it is used only to encrypt a conversation
+key which is then used to encrypt the timestamps.  The reason for
+doing this is to use the common key as little as possible, for fear
+that it could be broken.  Breaking the conversation key is a far
+less serious offense, since conversations are relatively
+short-lived.
+.LP
+The conversation key is encrypted using 56-bit DES keys, yet the
+common key is 192 bits.  To reduce the number of bits, 56 bits are
+selected from the common key as follows.  The middle-most 8-bytes
+are selected from the common key, and then parity is added to the
+lower order bit of each byte, producing a 56-bit key with 8 bits of
+parity.
+.KS
+.NH 1
+\&Record Marking Standard
+.LP
+When RPC messages are passed on top of a byte stream protocol (like
+TCP/IP), it is necessary, or at least desirable, to delimit one
+message from another in order to detect and possibly recover from
+user protocol errors.  This is called record marking (RM).  Sun uses
+this RM/TCP/IP transport for passing RPC messages on TCP streams.
+One RPC message fits into one RM record.
+.LP
+A record is composed of one or more record fragments.  A record
+fragment is a four-byte header followed by 0 to (2**31) - 1 bytes of
+fragment data.  The bytes encode an unsigned binary number; as with
+XDR integers, the byte order is from highest to lowest.  The number
+encodes two values\(ema boolean which indicates whether the fragment
+is the last fragment of the record (bit value 1 implies the fragment
+is the last fragment) and a 31-bit unsigned binary value which is the
+length in bytes of the fragment's data.  The boolean value is the
+highest-order bit of the header; the length is the 31 low-order bits.
+(Note that this record specification is NOT in XDR standard form!)
+.KE
+.KS
+.NH 1
+\&The RPC Language
+.LP
+Just as there was a need to describe the XDR data-types in a formal
+language, there is also need to describe the procedures that operate
+on these XDR data-types in a formal language as well.  We use the RPC
+Language for this purpose.  It is an extension to the XDR language.
+The following example is used to describe the essence of the
+language.
+.NH 2
+\&An Example Service Described in the RPC Language
+.LP
+Here is an example of the specification of a simple ping program.
+.ie t .DS
+.el .DS L
+.vs 11
+.ft I
+/*
+* Simple ping program
+*/
+.ft CW
+program PING_PROG {
+	/* \fILatest and greatest version\fP */
+	version PING_VERS_PINGBACK {
+	void 
+	PINGPROC_NULL(void) = 0;
+
+.ft I
+	/*
+	* Ping the caller, return the round-trip time
+	* (in microseconds). Returns -1 if the operation
+	* timed out.
+	*/
+.ft CW
+	int
+	PINGPROC_PINGBACK(void) = 1;        
+} = 2;     
+
+.ft I
+/*
+* Original version
+*/
+.ft CW
+version PING_VERS_ORIG {
+	void 
+	PINGPROC_NULL(void) = 0;
+	} = 1;
+} = 1;
+
+const PING_VERS = 2;      /* \fIlatest version \fP*/
+.vs
+.DE
+.KE
+.LP
+The first version described is
+.I PING_VERS_PINGBACK
+with  two procedures,   
+.I PINGPROC_NULL 
+and 
+.I PINGPROC_PINGBACK .
+.I PINGPROC_NULL 
+takes no arguments and returns no results, but it is useful for
+computing round-trip times from the client to the server and back
+again.  By convention, procedure 0 of any RPC protocol should have
+the same semantics, and never require any kind of authentication.
+The second procedure is used for the client to have the server do a
+reverse ping operation back to the client, and it returns the amount
+of time (in microseconds) that the operation used.  The next version,
+.I PING_VERS_ORIG ,
+is the original version of the protocol
+and it does not contain
+.I PINGPROC_PINGBACK
+procedure. It  is useful
+for compatibility  with old client  programs,  and as  this program
+matures it may be dropped from the protocol entirely.
+.KS
+.NH 2
+\&The RPC Language Specification
+.LP
+The  RPC language is identical to  the XDR language, except for the
+added definition of a
+.I program-def 
+described below.
+.DS
+.ft CW
+program-def:
+	"program" identifier "{"
+		version-def 
+		version-def *
+	"}" "=" constant ";"
+
+version-def:
+	"version" identifier "{"
+		procedure-def
+		procedure-def *
+	"}" "=" constant ";"
+
+procedure-def:
+	type-specifier identifier "(" type-specifier ")"
+	"=" constant ";"
+.DE
+.KE
+.NH 2
+\&Syntax Notes
+.IP  1.
+The following keywords  are  added  and   cannot  be used   as
+identifiers: "program" and "version";
+.IP  2.
+A version name cannot occur more than once within the  scope of
+a program definition. Nor can a version number occur more than once
+within the scope of a program definition.
+.IP  3.
+A procedure name cannot occur  more than once within  the scope
+of a version definition. Nor can a procedure number occur more than
+once within the scope of version definition.
+.IP  4.
+Program identifiers are in the same name space as  constant and
+type identifiers.
+.IP  5.
+Only unsigned constants can  be assigned to programs, versions
+and procedures.
+.NH 1
+\&Port Mapper Program Protocol
+.LP
+The port mapper program maps RPC program and version numbers to
+transport-specific port numbers.  This program makes dynamic binding
+of remote programs possible.
+.LP
+This is desirable because the range of reserved port numbers is very
+small and the number of potential remote programs is very large.  By
+running only the port mapper on a reserved port, the port numbers of
+other remote programs can be ascertained by querying the port mapper.
+.LP
+The port mapper also aids in broadcast RPC.  A given RPC program will
+usually have different port number bindings on different machines, so
+there is no way to directly broadcast to all of these programs.  The
+port mapper, however, does have a fixed port number.  So, to
+broadcast to a given program, the client actually sends its message
+to the port mapper located at the broadcast address.  Each port
+mapper that picks up the broadcast then calls the local service
+specified by the client.  When the port mapper gets the reply from
+the local service, it sends the reply on back to the client.
+.KS
+.NH 2
+\&Port Mapper Protocol Specification (in RPC Language)
+.ie t .DS
+.el .DS L
+.ft CW
+.vs 11
+const PMAP_PORT = 111;      /* \fIportmapper port number \fP*/
+
+.ft I
+/*
+* A mapping of (program, version, protocol) to port number
+*/
+.ft CW
+struct mapping {
+	unsigned int prog;
+	unsigned int vers;
+	unsigned int prot;
+	unsigned int port;
+};
+
+.ft I
+/* 
+* Supported values for the "prot" field
+*/
+.ft CW
+const IPPROTO_TCP = 6;      /* \fIprotocol number for TCP/IP \fP*/
+const IPPROTO_UDP = 17;     /* \fIprotocol number for UDP/IP \fP*/
+
+.ft I
+/*
+* A list of mappings
+*/
+.ft CW
+struct *pmaplist {
+	mapping map;
+	pmaplist next;
+};
+.vs
+.DE
+.ie t .DS
+.el .DS L
+.vs 11
+.ft I
+/*
+* Arguments to callit
+*/
+.ft CW
+struct call_args {
+	unsigned int prog;
+	unsigned int vers;
+	unsigned int proc;
+	opaque args<>;
+};  
+
+.ft I
+/*
+* Results of callit
+*/
+.ft CW
+struct call_result {
+	unsigned int port;
+	opaque res<>;
+};
+.vs
+.DE
+.KE
+.ie t .DS
+.el .DS L
+.vs 11
+.ft I
+/*
+* Port mapper procedures
+*/
+.ft CW
+program PMAP_PROG {
+	version PMAP_VERS {
+		void 
+		PMAPPROC_NULL(void)         = 0;
+
+		bool
+		PMAPPROC_SET(mapping)       = 1;
+
+		bool
+		PMAPPROC_UNSET(mapping)     = 2;
+
+		unsigned int
+		PMAPPROC_GETPORT(mapping)   = 3;
+
+		pmaplist
+		PMAPPROC_DUMP(void)         = 4;
+
+		call_result
+		PMAPPROC_CALLIT(call_args)  = 5;
+	} = 2;
+} = 100000;
+.vs
+.DE
+.NH 2
+\&Port Mapper Operation
+.LP
+The portmapper program currently supports two protocols (UDP/IP and
+TCP/IP).  The portmapper is contacted by talking to it on assigned
+port number 111 (SUNRPC [8]) on either of these protocols.  The
+following is a description of each of the portmapper procedures:
+.IP \fBPMAPPROC_NULL:\fP
+This procedure does no work.  By convention, procedure zero of any
+protocol takes no parameters and returns no results.
+.IP \fBPMAPPROC_SET:\fP
+When a program first becomes available on a machine, it registers
+itself with the port mapper program on the same machine.  The program
+passes its program number "prog", version number "vers", transport
+protocol number "prot", and the port "port" on which it awaits
+service request.  The procedure returns a boolean response whose
+value is
+.I TRUE
+if the procedure successfully established the mapping and 
+.I FALSE 
+otherwise.  The procedure refuses to establish
+a mapping if one already exists for the tuple "(prog, vers, prot)".
+.IP \fBPMAPPROC_UNSET:\fP
+When a program becomes unavailable, it should unregister itself with
+the port mapper program on the same machine.  The parameters and
+results have meanings identical to those of
+.I PMAPPROC_SET .
+The protocol and port number fields of the argument are ignored.
+.IP \fBPMAPPROC_GETPORT:\fP
+Given a program number "prog", version number "vers", and transport
+protocol number "prot", this procedure returns the port number on
+which the program is awaiting call requests.  A port value of zeros
+means the program has not been registered.  The "port" field of the
+argument is ignored.
+.IP \fBPMAPPROC_DUMP:\fP
+This procedure enumerates all entries in the port mapper's database.
+The procedure takes no parameters and returns a list of program,
+version, protocol, and port values.
+.IP \fBPMAPPROC_CALLIT:\fP
+This procedure allows a caller to call another remote procedure on
+the same machine without knowing the remote procedure's port number.
+It is intended for supporting broadcasts to arbitrary remote programs
+via the well-known port mapper's port.  The parameters "prog",
+"vers", "proc", and the bytes of "args" are the program number,
+version number, procedure number, and parameters of the remote
+procedure.
+.LP
+.B Note:
+.RS
+.IP  1.
+This procedure only sends a response if the procedure was
+successfully executed and is silent (no response) otherwise.
+.IP  2.
+The port mapper communicates with the remote program using UDP/IP
+only.
+.RE
+.LP
+The procedure returns the remote program's port number, and the bytes
+of results are the results of the remote procedure.
+.bp
+.NH 1
+\&References
+.LP
+[1]  Birrell, Andrew D. & Nelson, Bruce Jay; "Implementing Remote
+Procedure Calls"; XEROX CSL-83-7, October 1983.
+.LP
+[2]  Cheriton, D.; "VMTP:  Versatile Message Transaction Protocol",
+Preliminary Version 0.3; Stanford University, January 1987.
+.LP
+[3]  Diffie & Hellman; "New Directions in Cryptography"; IEEE
+Transactions on Information Theory IT-22, November 1976.
+.LP
+[4]  Harrenstien, K.; "Time Server", RFC 738; Information Sciences
+Institute, October 1977.
+.LP
+[5]  National Bureau of Standards; "Data Encryption Standard"; Federal
+Information Processing Standards Publication 46, January 1977.
+.LP
+[6]  Postel, J.; "Transmission Control Protocol - DARPA Internet
+Program Protocol Specification", RFC 793; Information Sciences
+Institute, September 1981.
+.LP
+[7]  Postel, J.; "User Datagram Protocol", RFC 768; Information Sciences
+Institute, August 1980.
+.LP
+[8]  Reynolds, J.  & Postel, J.; "Assigned Numbers", RFC 923; Information
+Sciences Institute, October 1984.
diff --git a/lib/libc/rpc/PSD.doc/rpcgen.ms b/lib/libc/rpc/PSD.doc/rpcgen.ms
new file mode 100644
index 0000000..b4e50e5
--- /dev/null
+++ b/lib/libc/rpc/PSD.doc/rpcgen.ms
@@ -0,0 +1,1299 @@
+.\"
+.\" Must use  --  tbl -- for this one
+.\"
+.\" @(#)rpcgen.ms	2.2 88/08/04 4.0 RPCSRC
+.de BT
+.if \\n%=1 .tl ''- % -''
+..
+.ND
+.\" prevent excess underlining in nroff
+.if n .fp 2 R
+.OH '\fBrpcgen\fP Programming Guide''Page %'
+.EH 'Page %''\fBrpcgen\fP Programming Guide'
+.if \\n%=1 .bp
+.SH
+\&\fBrpcgen\fP Programming Guide
+.NH 0
+\&The \fBrpcgen\fP Protocol Compiler
+.IX rpcgen "" \fIrpcgen\fP "" PAGE MAJOR
+.LP
+.IX RPC "" "" \fIrpcgen\fP
+The details of programming applications to use Remote Procedure Calls 
+can be overwhelming.  Perhaps most daunting is the writing of the XDR 
+routines necessary to convert procedure arguments and results into 
+their network format and vice-versa.  
+.LP
+Fortunately, 
+.I rpcgen(1) 
+exists to help programmers write RPC applications simply and directly.
+.I rpcgen 
+does most of the dirty work, allowing programmers to debug 
+the  main  features of their application, instead of requiring them to
+spend most of their time debugging their network interface code.
+.LP
+.I rpcgen 
+is a  compiler.  It accepts a remote program interface definition written
+in a language, called RPC Language, which is similar to C.  It produces a C
+language output which includes stub versions of the client routines, a
+server skeleton, XDR filter routines for both parameters and results, and a
+header file that contains common definitions. The client stubs interface
+with the RPC library and effectively hide the network from their callers.
+The server stub similarly hides the network from the server procedures that
+are to be invoked by remote clients.
+.I rpcgen 's
+output files can be compiled and linked in the usual way.  The developer
+writes server procedures\(emin any language that observes Sun calling
+conventions\(emand links them with the server skeleton produced by
+.I rpcgen 
+to get an executable server program.  To use a remote program, a programmer
+writes an ordinary main program that makes local procedure calls to the 
+client stubs produced by
+.I rpcgen .
+Linking this program with 
+.I rpcgen 's
+stubs creates an executable program.  (At present the main program must be 
+written in C).
+.I rpcgen 
+options can be used to suppress stub generation and to specify the transport
+to be used by the server stub.
+.LP
+Like all compilers, 
+.I rpcgen 
+reduces development time
+that would otherwise be spent coding and debugging low-level routines.
+All compilers, including 
+.I rpcgen ,
+do this at a small cost in efficiency
+and flexibility.  However,   many compilers allow  escape  hatches for
+programmers to  mix low-level code with  high-level code. 
+.I rpcgen 
+is no exception.  In speed-critical applications, hand-written routines 
+can be linked with the 
+.I rpcgen 
+output without any difficulty.  Also, one may proceed by using
+.I rpcgen 
+output as a starting point, and then rewriting it as necessary.
+(If you need a discussion of RPC programming without
+.I rpcgen ,
+see the
+.I "Remote Procedure Call Programming Guide)\.
+.NH 1
+\&Converting Local Procedures into Remote Procedures
+.IX rpcgen "local procedures" \fIrpcgen\fP
+.IX rpcgen "remote procedures" \fIrpcgen\fP
+.LP
+Assume an application that runs on a single machine, one which we want 
+to convert to run over the network.  Here we will demonstrate such a 
+conversion by way of a simple example\(ema program that prints a 
+message to the console:
+.ie t .DS
+.el .DS L
+.ft I
+/*
+ * printmsg.c: print a message on the console
+ */
+.ft CW
+#include <stdio.h>
+
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	char *message;
+
+	if (argc < 2) {
+		fprintf(stderr, "usage: %s <message>\en", argv[0]);
+		exit(1);
+	}
+	message = argv[1];
+
+	if (!printmessage(message)) {
+		fprintf(stderr, "%s: couldn't print your message\en",
+			argv[0]);
+		exit(1);
+	} 
+	printf("Message Delivered!\en");
+	exit(0);
+}
+.ft I
+/*
+ * Print a message to the console.
+ * Return a boolean indicating whether the message was actually printed.
+ */
+.ft CW
+printmessage(msg)
+	char *msg;
+{
+	FILE *f;
+
+	f = fopen("/dev/console", "w");
+	if (f == NULL) {
+		return (0);
+	}
+	fprintf(f, "%s\en", msg);
+	fclose(f);
+	return(1);
+}
+.DE
+.LP
+And then, of course:
+.ie t .DS
+.el .DS L
+.ft CW
+example%  \fBcc printmsg.c -o printmsg\fP
+example%  \fBprintmsg "Hello, there."\fP
+Message delivered!
+example%
+.DE
+.LP
+If  
+.I printmessage() 
+was turned into  a remote procedure,
+then it could be  called from anywhere in   the network.  
+Ideally,  one would just  like to stick   a  keyword like  
+.I remote 
+in  front  of a
+procedure to turn it into a  remote procedure.  Unfortunately,
+we  have to live  within the  constraints of  the   C language, since 
+it existed   long before  RPC did.  But   even without language 
+support, it's not very difficult to make a procedure remote.
+.LP
+In  general, it's necessary to figure  out  what the types are for
+all procedure inputs and outputs.  In  this case,   we  have a 
+procedure
+.I printmessage() 
+which takes a  string as input, and returns  an integer
+as output.  Knowing  this, we can write a  protocol specification in RPC
+language that  describes the remote  version of 
+.I printmessage ().
+Here it is:
+.ie t .DS
+.el .DS L
+.ft I
+/*
+ * msg.x: Remote message printing protocol
+ */
+.ft CW
+
+program MESSAGEPROG {
+	version MESSAGEVERS {
+		int PRINTMESSAGE(string) = 1;
+	} = 1;
+} = 99;
+.DE
+.LP
+Remote procedures are part of remote programs, so we actually declared
+an  entire  remote program  here  which contains  the single procedure
+.I PRINTMESSAGE .
+This procedure was declared to be  in version  1 of the
+remote program.  No null procedure (procedure 0) is necessary because
+.I rpcgen 
+generates it automatically.
+.LP
+Notice that everything is declared with all capital  letters.  This is
+not required, but is a good convention to follow.
+.LP
+Notice also that the argument type is \*Qstring\*U and not \*Qchar *\*U.  This
+is because a \*Qchar *\*U in C is ambiguous.  Programmers usually intend it
+to mean  a null-terminated string   of characters, but  it  could also
+represent a pointer to a single character or a  pointer to an array of
+characters.  In  RPC language,  a  null-terminated  string is 
+unambiguously called a \*Qstring\*U.
+.LP
+There are  just two more things to  write.  First, there is the remote
+procedure itself.  Here's the definition of a remote procedure
+to implement the
+.I PRINTMESSAGE
+procedure we declared above:
+.ie t .DS
+.el .DS L
+.vs 11
+.ft I
+/*
+ * msg_proc.c: implementation of the remote procedure "printmessage"
+ */
+.ft CW
+
+#include <stdio.h>
+#include <rpc/rpc.h>    /* \fIalways needed\fP  */
+#include "msg.h"        /* \fIneed this too: msg.h will be generated by rpcgen\fP */
+
+.ft I
+/*
+ * Remote verson of "printmessage"
+ */
+.ft CW
+int *
+printmessage_1(msg)
+	char **msg;
+{
+	static int result;  /* \fImust be static!\fP */
+	FILE *f;
+
+	f = fopen("/dev/console", "w");
+	if (f == NULL) {
+		result = 0;
+		return (&result);
+	}
+	fprintf(f, "%s\en", *msg);
+	fclose(f);
+	result = 1;
+	return (&result);
+}
+.vs
+.DE
+.LP
+Notice here that the declaration of the remote procedure
+.I printmessage_1() 
+differs from that of the local procedure
+.I printmessage() 
+in three ways:
+.IP  1.
+It takes a pointer to a string instead of a string itself.  This
+is true of all  remote procedures:  they always take pointers to  their
+arguments rather than the arguments themselves.
+.IP  2.
+It returns a pointer to an  integer instead of  an integer itself. This is
+also generally true of remote procedures: they always return a pointer
+to their results.
+.IP  3.
+It has an \*Q_1\*U appended to its name.  In general, all remote
+procedures called by 
+.I rpcgen 
+are named by  the following rule: the name in the program  definition  
+(here 
+.I PRINTMESSAGE )
+is converted   to all
+lower-case letters, an underbar (\*Q_\*U) is appended to it, and
+finally the version number (here 1) is appended.
+.LP
+The last thing to do is declare the main client program that will call
+the remote procedure. Here it is:
+.ie t .DS
+.el .DS L
+.ft I
+/*
+ * rprintmsg.c: remote version of "printmsg.c"
+ */
+.ft CW
+#include <stdio.h>
+#include <rpc/rpc.h>     /* \fIalways needed\fP  */
+#include "msg.h"         /* \fIneed this too: msg.h will be generated by rpcgen\fP */
+
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	CLIENT *cl;
+	int *result;
+	char *server;
+	char *message;
+
+	if (argc < 3) {
+		fprintf(stderr, "usage: %s host message\en", argv[0]);
+		exit(1);
+	}
+
+.ft I
+	/*
+	 * Save values of command line arguments 
+	 */
+.ft CW
+	server = argv[1];
+	message = argv[2];
+
+.ft I
+	/*
+	 * Create client "handle" used for calling \fIMESSAGEPROG\fP on the
+	 * server designated on the command line. We tell the RPC package
+	 * to use the "tcp" protocol when contacting the server.
+	 */
+.ft CW
+	cl = clnt_create(server, MESSAGEPROG, MESSAGEVERS, "tcp");
+	if (cl == NULL) {
+.ft I
+		/*
+		 * Couldn't establish connection with server.
+		 * Print error message and die.
+		 */
+.ft CW
+		clnt_pcreateerror(server);
+		exit(1);
+	}
+
+.ft I
+	/*
+	 * Call the remote procedure "printmessage" on the server
+	 */
+.ft CW
+	result = printmessage_1(&message, cl);
+	if (result == NULL) {
+.ft I
+		/*
+		 * An error occurred while calling the server. 
+	 	 * Print error message and die.
+		 */
+.ft CW
+		clnt_perror(cl, server);
+		exit(1);
+	}
+
+.ft I
+	/*
+	 * Okay, we successfully called the remote procedure.
+	 */
+.ft CW
+	if (*result == 0) {
+.ft I
+		/*
+		 * Server was unable to print our message. 
+		 * Print error message and die.
+		 */
+.ft CW
+		fprintf(stderr, "%s: %s couldn't print your message\en", 
+			argv[0], server);	
+		exit(1);
+	} 
+
+.ft I
+	/*
+	 * The message got printed on the server's console
+	 */
+.ft CW
+	printf("Message delivered to %s!\en", server);
+}
+.DE
+There are two things to note here:
+.IP  1.
+.IX "client handle, used by rpcgen" "" "client handle, used by \fIrpcgen\fP"
+First a client \*Qhandle\*U is created using the RPC library routine
+.I clnt_create ().
+This client handle will be passed  to the stub routines
+which call the remote procedure.
+.IP  2.
+The remote procedure  
+.I printmessage_1() 
+is called exactly  the same way as it is  declared in 
+.I msg_proc.c 
+except for the inserted client handle as the first argument.
+.LP
+Here's how to put all of the pieces together:
+.ie t .DS
+.el .DS L
+.ft CW
+example%  \fBrpcgen msg.x\fP
+example%  \fBcc rprintmsg.c msg_clnt.c -o rprintmsg\fP
+example%  \fBcc msg_proc.c msg_svc.c -o msg_server\fP
+.DE
+Two programs were compiled here: the client program 
+.I rprintmsg 
+and the server  program 
+.I msg_server .
+Before doing this  though,  
+.I rpcgen 
+was used to fill in the missing pieces.  
+.LP
+Here is what 
+.I rpcgen 
+did with the input file 
+.I msg.x :
+.IP  1.
+It created a header file called 
+.I msg.h 
+that contained
+.I #define 's
+for
+.I MESSAGEPROG ,
+.I MESSAGEVERS 
+and    
+.I PRINTMESSAGE 
+for use in  the  other modules.
+.IP  2.
+It created client \*Qstub\*U routines in the
+.I msg_clnt.c 
+file.   In this case there is only one, the 
+.I printmessage_1() 
+that was referred to from the
+.I printmsg 
+client program.  The name  of the output file for
+client stub routines is always formed in this way:  if the name of the
+input file is  
+.I FOO.x ,
+the   client  stubs   output file is    called
+.I FOO_clnt.c .
+.IP  3.
+It created  the  server   program which calls   
+.I printmessage_1() 
+in
+.I msg_proc.c .
+This server program is named  
+.I msg_svc.c .
+The rule for naming the server output file is similar  to the 
+previous one:  for an input  file   called  
+.I FOO.x ,
+the   output   server   file is  named
+.I FOO_svc.c .
+.LP
+Now we're ready to have some fun.  First, copy the server to a
+remote machine and run it.  For this  example,  the
+machine is called \*Qmoon\*U.  Server processes are run in the
+background, because they never exit.
+.ie t .DS
+.el .DS L
+.ft CW
+moon% \fBmsg_server &\fP	       
+.DE
+Then on our local machine (\*Qsun\*U) we can print a message on \*Qmoon\*Us
+console.
+.ie t .DS
+.el .DS L
+.ft CW
+sun% \fBprintmsg moon "Hello, moon."\fP
+.DE
+The message will get printed to \*Qmoon\*Us console.  You can print a
+message on anybody's console (including your own) with this program if
+you are able to copy the server to their machine and run it.
+.NH 1
+\&Generating XDR Routines
+.IX RPC "generating XDR routines"
+.LP
+The previous example  only demonstrated  the  automatic generation of
+client  and server RPC  code. 
+.I rpcgen 
+may also  be used to generate XDR routines, that  is,  the routines
+necessary to  convert   local  data
+structures into network format and vice-versa.  This example presents
+a complete RPC service\(ema remote directory listing service, which uses
+.I rpcgen
+not  only  to generate stub routines, but also to  generate  the XDR
+routines.  Here is the protocol description file:
+.ie t .DS
+.el .DS L
+.ft I
+/*
+ * dir.x: Remote directory listing protocol
+ */
+.ft CW
+const MAXNAMELEN = 255;		/* \fImaximum length of a directory entry\fP */
+
+typedef string nametype<MAXNAMELEN>;	/* \fIa directory entry\fP */
+
+typedef struct namenode *namelist;		/* \fIa link in the listing\fP */
+
+.ft I
+/*
+ * A node in the directory listing
+ */
+.ft CW
+struct namenode {
+	nametype name;		/* \fIname of directory entry\fP */
+	namelist next;		/* \fInext entry\fP */
+};
+
+.ft I
+/*
+ * The result of a READDIR operation.
+ */
+.ft CW
+union readdir_res switch (int errno) {
+case 0:
+	namelist list;	/* \fIno error: return directory listing\fP */
+default:
+	void;		/* \fIerror occurred: nothing else to return\fP */
+};
+
+.ft I
+/*
+ * The directory program definition
+ */
+.ft CW
+program DIRPROG {
+	version DIRVERS {
+		readdir_res
+		READDIR(nametype) = 1;
+	} = 1;
+} = 76;
+.DE
+.SH
+Note:
+.I
+Types (like
+.I readdir_res 
+in the example above) can be defined using
+the \*Qstruct\*U, \*Qunion\*U and \*Qenum\*U keywords, but those keywords
+should not be used in subsequent declarations of variables of those types.
+For example, if you define a union \*Qfoo\*U, you should declare using
+only \*Qfoo\*U and not \*Qunion foo\*U.  In fact,
+.I rpcgen 
+compiles
+RPC unions into C structures and it is an error to declare them using the
+\*Qunion\*U keyword.
+.LP
+Running 
+.I rpcgen 
+on 
+.I dir.x 
+creates four output files.  Three are the same as before: header file,
+client stub routines and server skeleton.  The fourth are the XDR routines
+necessary for converting the data types we declared into XDR format and
+vice-versa.  These are output in the file
+.I dir_xdr.c .
+.LP
+Here is the implementation of the
+.I READDIR 
+procedure.
+.ie t .DS
+.el .DS L
+.vs 11
+.ft I
+/*
+ * dir_proc.c: remote readdir implementation
+ */
+.ft CW
+#include <rpc/rpc.h>
+#include <sys/dir.h>
+#include "dir.h"
+
+extern int errno;
+extern char *malloc();
+extern char *strdup();
+
+readdir_res *
+readdir_1(dirname)
+	nametype *dirname;
+{
+	DIR *dirp;
+	struct direct *d;
+	namelist nl;
+	namelist *nlp;
+	static readdir_res res; /* \fImust be static\fP! */
+
+.ft I
+	/*
+	 * Open directory
+	 */
+.ft CW
+	dirp = opendir(*dirname);
+	if (dirp == NULL) {
+		res.errno = errno;
+		return (&res);
+	}
+
+.ft I
+	/*
+	 * Free previous result
+	 */
+.ft CW
+	xdr_free(xdr_readdir_res, &res);
+
+.ft I
+	/*
+	 * Collect directory entries.
+	 * Memory allocated here will be freed by \fIxdr_free\fP
+	 * next time \fIreaddir_1\fP is called
+	 */
+.ft CW
+	nlp = &res.readdir_res_u.list;
+	while (d = readdir(dirp)) {
+		nl = *nlp = (namenode *) malloc(sizeof(namenode));
+		nl->name = strdup(d->d_name);
+		nlp = &nl->next;
+	}
+	*nlp = NULL;
+
+.ft I
+	/*
+	 * Return the result
+	 */
+.ft CW
+	res.errno = 0;
+	closedir(dirp);
+	return (&res);
+}
+.vs
+.DE
+Finally, there is the client side program to call the server:
+.ie t .DS
+.el .DS L
+.ft I
+/*
+ * rls.c: Remote directory listing client
+ */
+.ft CW
+#include <stdio.h>
+#include <rpc/rpc.h>	/* \fIalways need this\fP */
+#include "dir.h"		/* \fIwill be generated by rpcgen\fI */
+
+extern int errno;
+
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	CLIENT *cl;
+	char *server;
+	char *dir;
+	readdir_res *result;
+	namelist nl;
+
+
+	if (argc != 3) {
+		fprintf(stderr, "usage: %s host directory\en", 
+		  argv[0]);
+		exit(1);
+	}
+
+.ft I
+	/*
+	 * Remember what our command line arguments refer to
+	 */
+.ft CW
+	server = argv[1];
+	dir = argv[2];
+
+.ft I
+	/*
+	 * Create client "handle" used for calling \fIMESSAGEPROG\fP on the
+	 * server designated on the command line. We tell the RPC package
+	 * to use the "tcp" protocol when contacting the server.
+	 */
+.ft CW
+	cl = clnt_create(server, DIRPROG, DIRVERS, "tcp");
+	if (cl == NULL) {
+.ft I
+		/*
+		 * Couldn't establish connection with server.
+		 * Print error message and die.
+		 */
+.ft CW
+		clnt_pcreateerror(server);
+		exit(1);
+	}
+
+.ft I
+	/*
+	 * Call the remote procedure \fIreaddir\fP on the server
+	 */
+.ft CW
+	result = readdir_1(&dir, cl);
+	if (result == NULL) {
+.ft I
+		/*
+		 * An error occurred while calling the server. 
+	 	 * Print error message and die.
+		 */
+.ft CW
+		clnt_perror(cl, server);
+		exit(1);
+	}
+
+.ft I
+	/*
+	 * Okay, we successfully called the remote procedure.
+	 */
+.ft CW
+	if (result->errno != 0) {
+.ft I
+		/*
+		 * A remote system error occurred.
+		 * Print error message and die.
+		 */
+.ft CW
+		errno = result->errno;
+		perror(dir);
+		exit(1);
+	}
+
+.ft I
+	/*
+	 * Successfully got a directory listing.
+	 * Print it out.
+	 */
+.ft CW
+	for (nl = result->readdir_res_u.list; nl != NULL; 
+	  nl = nl->next) {
+		printf("%s\en", nl->name);
+	}
+	exit(0);
+}
+.DE
+Compile everything, and run.
+.DS
+.ft CW
+sun%  \fBrpcgen dir.x\fP
+sun%  \fBcc rls.c dir_clnt.c dir_xdr.c -o rls\fP
+sun%  \fBcc dir_svc.c dir_proc.c dir_xdr.c -o dir_svc\fP
+
+sun%  \fBdir_svc &\fP
+
+moon%  \fBrls sun /usr/pub\fP
+\&.
+\&..
+ascii
+eqnchar
+greek
+kbd
+marg8
+tabclr
+tabs
+tabs4
+moon%
+.DE
+.LP
+.IX "debugging with rpcgen" "" "debugging with \fIrpcgen\fP"
+A final note about 
+.I rpcgen :
+The client program and the server procedure can be tested together 
+as a single program by simply linking them with each other rather 
+than with the client and server stubs.  The procedure calls will be
+executed as ordinary local procedure calls and the program can be 
+debugged with a local debugger such as 
+.I dbx .
+When the program is working, the client program can be linked to 
+the client stub produced by 
+.I rpcgen 
+and the server procedures can be linked to the server stub produced
+by 
+.I rpcgen .
+.SH
+.I NOTE :
+\fIIf you do this, you may want to comment out calls to RPC library
+routines, and have client-side routines call server routines
+directly.\fP
+.LP
+.NH 1
+\&The C-Preprocessor
+.IX rpcgen "C-preprocessor" \fIrpcgen\fP
+.LP
+The C-preprocessor is  run on all input  files before they are
+compiled, so all the preprocessor directives are legal within a \*Q.x\*U
+file. Four symbols may be defined, depending upon which output file is
+getting generated. The symbols are:
+.TS
+box tab (&);
+lfI lfI
+lfL l .
+Symbol&Usage
+_
+RPC_HDR&for header-file output
+RPC_XDR&for XDR routine output
+RPC_SVC&for server-skeleton output
+RPC_CLNT&for client stub output
+.TE
+.LP
+Also, 
+.I rpcgen 
+does  a little preprocessing   of its own. Any  line that
+begins  with  a percent sign is passed  directly into the output file,
+without any interpretation of the line.  Here is a simple example that
+demonstrates the preprocessing features.
+.ie t .DS
+.el .DS L
+.ft I
+/*
+ * time.x: Remote time protocol
+ */
+.ft CW
+program TIMEPROG {
+        version TIMEVERS {
+                unsigned int TIMEGET(void) = 1;
+        } = 1;
+} = 44;
+
+#ifdef RPC_SVC
+%int *
+%timeget_1()
+%{
+%        static int thetime;
+%
+%        thetime = time(0);
+%        return (&thetime);
+%}
+#endif
+.DE
+The '%' feature is not generally recommended, as there is no guarantee
+that the compiler will stick the output where you intended.
+.NH 1
+\&\fBrpcgen\fP Programming Notes
+.IX rpcgen "other operations" \fIrpcgen\fP
+.sp 
+.NH 2
+\&Timeout Changes
+.IX rpcgen "timeout changes" \fIrpcgen\fP
+.LP
+RPC sets a default timeout of 25 seconds for RPC calls when
+.I clnt_create()
+is used.  This timeout may be changed using
+.I clnt_control()
+Here is a small code fragment to demonstrate use of
+.I clnt_control ():
+.ID
+struct timeval tv;
+CLIENT *cl;
+.sp .5
+cl = clnt_create("somehost", SOMEPROG, SOMEVERS, "tcp");
+if (cl == NULL) {
+	exit(1);
+}
+tv.tv_sec = 60;	/* \fIchange timeout to 1 minute\fP */
+tv.tv_usec = 0;
+clnt_control(cl, CLSET_TIMEOUT, &tv);	
+.DE
+.NH 2
+\&Handling Broadcast on the Server Side
+.IX "broadcast RPC"
+.IX rpcgen "broadcast RPC" \fIrpcgen\fP
+.LP
+When a procedure is known to be called via broadcast RPC,
+it is usually wise for the server to not reply unless it can provide
+some useful information to the client.  This prevents the network
+from getting flooded by useless replies.
+.LP
+To prevent the server from replying, a remote procedure can
+return NULL as its result, and the server code generated by
+.I rpcgen 
+will detect this and not send out a reply.
+.LP
+Here is an example of a procedure that replies only if it
+thinks it is an NFS server:
+.ID
+void *
+reply_if_nfsserver()
+{
+	char notnull;	/* \fIjust here so we can use its address\fP */
+.sp .5
+	if (access("/etc/exports", F_OK) < 0) {
+		return (NULL);	/* \fIprevent RPC from replying\fP */
+	}
+.ft I
+	/*
+	 * return non-null pointer so RPC will send out a reply
+	 */
+.ft L
+	return ((void *)&notnull);
+}
+.DE
+Note that if procedure returns type \*Qvoid *\*U, they must return a non-NULL
+pointer if they want RPC to reply for them.
+.NH 2
+\&Other Information Passed to Server Procedures
+.LP
+Server procedures will often want to know more about an RPC call
+than just its arguments.  For example, getting authentication information
+is important to procedures that want to implement some level of security.
+This extra information is actually supplied to the server procedure as a
+second argument.  Here is an example to demonstrate its use.  What we've
+done here is rewrite the previous
+.I printmessage_1() 
+procedure to only allow root users to print a message to the console.
+.ID
+int *
+printmessage_1(msg, rq)
+	char **msg;
+	struct svc_req	*rq;
+{
+	static in result;	/* \fIMust be static\fP */
+	FILE *f;
+	struct suthunix_parms *aup;
+.sp .5
+	aup = (struct authunix_parms *)rq->rq_clntcred;
+	if (aup->aup_uid != 0) {
+		result = 0;
+		return (&result);
+	}
+.sp
+.ft I
+	/*
+	 * Same code as before.
+	 */
+.ft L
+}
+.DE
+.NH 1
+\&RPC Language
+.IX RPCL
+.IX rpcgen "RPC Language" \fIrpcgen\fP
+.LP
+RPC language is an extension of XDR  language.   The sole extension is
+the addition of the
+.I program 
+type.  For a complete description of the XDR language syntax, see the
+.I "External Data Representation Standard: Protocol Specification"
+chapter.  For a description of the RPC extensions to the XDR language,
+see the
+.I "Remote Procedure Calls: Protocol Specification"
+chapter.
+.LP
+However, XDR language is so close to C that if you know C, you know most
+of it already.  We describe here  the syntax of the RPC language,
+showing a  few examples along the way.   We also show how  the various
+RPC and XDR type definitions get  compiled into C  type definitions in
+the output header file.
+.KS
+.NH 2
+Definitions
+\&
+.IX rpcgen definitions \fIrpcgen\fP
+.LP
+An RPC language file consists of a series of definitions.
+.DS L
+.ft CW
+    definition-list:
+        definition ";"
+        definition ";" definition-list
+.DE
+.KE
+It recognizes five types of definitions. 
+.DS L
+.ft CW
+    definition:
+        enum-definition
+        struct-definition
+        union-definition
+        typedef-definition
+        const-definition
+        program-definition
+.DE
+.NH 2
+Structures
+\&
+.IX rpcgen structures \fIrpcgen\fP
+.LP
+An XDR struct  is declared almost exactly like  its C counterpart.  It
+looks like the following:
+.DS L
+.ft CW
+    struct-definition:
+        "struct" struct-ident "{"
+            declaration-list
+        "}"
+
+    declaration-list:
+        declaration ";"
+        declaration ";" declaration-list
+.DE
+As an example, here is an XDR structure to a two-dimensional
+coordinate, and the C structure  that it  gets compiled into  in the
+output header file.
+.DS
+.ft CW
+   struct coord {             struct coord {
+        int x;       -->           int x;
+        int y;                     int y;
+   };                         };
+                              typedef struct coord coord;
+.DE
+The output is identical to the  input, except  for the added
+.I typedef
+at the end of the output.  This allows one to use \*Qcoord\*U instead of
+\*Qstruct coord\*U when declaring items.
+.NH 2
+Unions
+\&
+.IX rpcgen unions \fIrpcgen\fP
+.LP
+XDR unions are discriminated unions, and look quite different from C
+unions. They are more analogous to  Pascal variant records than they
+are to C unions.
+.DS L
+.ft CW
+    union-definition:
+        "union" union-ident "switch" "(" declaration ")" "{"
+            case-list
+        "}"
+
+    case-list:
+        "case" value ":" declaration ";"
+        "default" ":" declaration ";"
+        "case" value ":" declaration ";" case-list
+.DE
+Here is an example of a type that might be returned as the result of a
+\*Qread data\*U operation.  If there is no error, return a block of data.
+Otherwise, don't return anything.
+.DS L
+.ft CW
+    union read_result switch (int errno) {
+    case 0:
+        opaque data[1024];
+    default:
+        void;
+    };
+.DE
+It gets compiled into the following:
+.DS L
+.ft CW
+    struct read_result {
+        int errno;
+        union {
+            char data[1024];
+        } read_result_u;
+    };
+    typedef struct read_result read_result;
+.DE
+Notice that the union component of the  output struct  has the name as
+the type name, except for the trailing \*Q_u\*U.
+.NH 2
+Enumerations
+\&
+.IX rpcgen enumerations \fIrpcgen\fP
+.LP
+XDR enumerations have the same syntax as C enumerations.
+.DS L
+.ft CW
+    enum-definition:
+        "enum" enum-ident "{"
+            enum-value-list
+        "}"
+
+    enum-value-list:
+        enum-value
+        enum-value "," enum-value-list
+
+    enum-value:
+        enum-value-ident 
+        enum-value-ident "=" value
+.DE
+Here is a short example of  an XDR enum,  and the C enum that  it gets
+compiled into.
+.DS L
+.ft CW
+     enum colortype {      enum colortype {
+          RED = 0,              RED = 0,
+          GREEN = 1,   -->      GREEN = 1,
+          BLUE = 2              BLUE = 2,
+     };                    };
+                           typedef enum colortype colortype;
+.DE
+.NH 2
+Typedef
+\&
+.IX rpcgen typedef \fIrpcgen\fP
+.LP
+XDR typedefs have the same syntax as C typedefs.
+.DS L
+.ft CW
+    typedef-definition:
+        "typedef" declaration
+.DE
+Here  is an example  that defines a  
+.I fname_type 
+used  for declaring
+file name strings that have a maximum length of 255 characters.
+.DS L
+.ft CW
+typedef string fname_type<255>; --> typedef char *fname_type;
+.DE
+.NH 2
+Constants
+\&
+.IX rpcgen constants \fIrpcgen\fP
+.LP
+XDR constants  symbolic constants  that may be  used wherever  a
+integer constant is used, for example, in array size specifications.
+.DS L
+.ft CW
+    const-definition:
+        "const" const-ident "=" integer
+.DE
+For example, the following defines a constant
+.I DOZEN 
+equal to 12.
+.DS L
+.ft CW
+    const DOZEN = 12;  -->  #define DOZEN 12
+.DE
+.NH 2
+Programs
+\&
+.IX rpcgen programs \fIrpcgen\fP
+.LP
+RPC programs are declared using the following syntax:
+.DS L
+.ft CW
+    program-definition:
+        "program" program-ident "{" 
+            version-list
+        "}" "=" value 
+
+    version-list:
+        version ";"
+        version ";" version-list
+
+    version:
+        "version" version-ident "{"
+            procedure-list 
+        "}" "=" value
+
+    procedure-list:
+        procedure ";"
+        procedure ";" procedure-list
+
+    procedure:
+        type-ident procedure-ident "(" type-ident ")" "=" value
+.DE
+For example, here is the time protocol, revisited:
+.ie t .DS
+.el .DS L
+.ft I
+/*
+ * time.x: Get or set the time. Time is represented as number of seconds
+ * since 0:00, January 1, 1970.
+ */
+.ft CW
+program TIMEPROG {
+    version TIMEVERS {
+        unsigned int TIMEGET(void) = 1;
+        void TIMESET(unsigned) = 2;
+    } = 1;
+} = 44;        
+.DE
+This file compiles into #defines in the output header file:
+.ie t .DS
+.el .DS L
+.ft CW
+#define TIMEPROG 44
+#define TIMEVERS 1
+#define TIMEGET 1
+#define TIMESET 2
+.DE
+.NH 2
+Declarations
+\&
+.IX rpcgen declarations \fIrpcgen\fP
+.LP
+In XDR, there are only four kinds of declarations.  
+.DS L
+.ft CW
+    declaration:
+        simple-declaration
+        fixed-array-declaration
+        variable-array-declaration
+        pointer-declaration
+.DE
+\fB1) Simple declarations\fP are just like simple C declarations.
+.DS L
+.ft CW
+    simple-declaration:
+        type-ident variable-ident
+.DE
+Example:
+.DS L
+.ft CW
+    colortype color;    --> colortype color;
+.DE
+\fB2) Fixed-length Array Declarations\fP are just like C array declarations:
+.DS L
+.ft CW
+    fixed-array-declaration:
+        type-ident variable-ident "[" value "]"
+.DE
+Example:
+.DS L
+.ft CW
+    colortype palette[8];    --> colortype palette[8];
+.DE
+\fB3) Variable-Length Array Declarations\fP have no explicit syntax 
+in C, so XDR invents its own using angle-brackets.
+.DS L
+.ft CW
+variable-array-declaration:
+    type-ident variable-ident "<" value ">"
+    type-ident variable-ident "<" ">"
+.DE
+The maximum size is specified between the angle brackets. The size may
+be omitted, indicating that the array may be of any size.
+.DS L
+.ft CW
+    int heights<12>;    /* \fIat most 12 items\fP */
+    int widths<>;       /* \fIany number of items\fP */
+.DE
+Since  variable-length  arrays have no  explicit  syntax in  C,  these
+declarations are actually compiled into \*Qstruct\*Us.  For example, the
+\*Qheights\*U declaration gets compiled into the following struct:
+.DS L
+.ft CW
+    struct {
+        u_int heights_len;  /* \fI# of items in array\fP */
+        int *heights_val;   /* \fIpointer to array\fP */
+    } heights;
+.DE
+Note that the number of items in the array is stored in the \*Q_len\*U
+component and the pointer to the array is stored in the \*Q_val\*U
+component. The first part of each of these component's names is the
+same as the name of the declared XDR variable.
+.LP
+\fB4) Pointer Declarations\fP are made in 
+XDR  exactly as they  are  in C.  You  can't
+really send pointers over the network,  but  you  can use XDR pointers
+for sending recursive data types such as lists and trees.  The type is
+actually called \*Qoptional-data\*U, not \*Qpointer\*U, in XDR language.
+.DS L
+.ft CW
+    pointer-declaration:
+        type-ident "*" variable-ident
+.DE
+Example:
+.DS L
+.ft CW
+    listitem *next;  -->  listitem *next;
+.DE
+.NH 2
+\&Special Cases
+.IX rpcgen "special cases" \fIrpcgen\fP
+.LP
+There are a few exceptions to the rules described above.
+.LP
+.B Booleans:
+C has no built-in boolean type. However, the RPC library does  a
+boolean type   called 
+.I bool_t 
+that   is either  
+.I TRUE 
+or  
+.I FALSE .
+Things declared as  type 
+.I bool 
+in  XDR language  are  compiled  into
+.I bool_t 
+in the output header file.
+.LP
+Example:
+.DS L
+.ft CW
+    bool married;  -->  bool_t married;
+.DE
+.B Strings:
+C has  no built-in string  type, but  instead uses the null-terminated
+\*Qchar *\*U convention.  In XDR language, strings are declared using the
+\*Qstring\*U keyword, and compiled into \*Qchar *\*Us in the output header
+file. The  maximum size contained  in the angle brackets specifies the
+maximum number of characters allowed in the  strings (not counting the
+.I NULL 
+character). The maximum size may be left off, indicating a string
+of arbitrary length.
+.LP
+Examples:
+.DS L
+.ft CW
+    string name<32>;    -->  char *name;
+    string longname<>;  -->  char *longname;
+.DE
+.B "Opaque  Data:"
+Opaque data is used in RPC and XDR to describe untyped  data, that is,
+just  sequences of arbitrary  bytes.  It may be  declared  either as a
+fixed or variable length array.
+.DS L
+Examples:
+.ft CW
+    opaque diskblock[512];  -->  char diskblock[512];
+
+    opaque filedata<1024>;  -->  struct {
+                                    u_int filedata_len;
+                                    char *filedata_val;
+                                 } filedata;
+.DE
+.B Voids:
+In a void declaration, the variable is  not named.  The declaration is
+just \*Qvoid\*U and nothing else.  Void declarations can only occur in two
+places: union definitions and program definitions (as the  argument or
+result of a remote procedure).
diff --git a/lib/libc/rpc/PSD.doc/xdr.nts.ms b/lib/libc/rpc/PSD.doc/xdr.nts.ms
new file mode 100644
index 0000000..6c2d482
--- /dev/null
+++ b/lib/libc/rpc/PSD.doc/xdr.nts.ms
@@ -0,0 +1,1966 @@
+.\"
+.\" Must use --  eqn -- with this one
+.\"
+.\" @(#)xdr.nts.ms	2.2 88/08/05 4.0 RPCSRC
+.EQ
+delim $$
+.EN
+.de BT
+.if \\n%=1 .tl ''- % -''
+..
+.ND
+.\" prevent excess underlining in nroff
+.if n .fp 2 R
+.OH 'External Data Representation: Sun Technical Notes''Page %'
+.EH 'Page %''External Data Representation: Sun Technical Notes'
+.if \\n%=1 .bp
+.SH
+\&External Data Representation: Sun Technical Notes
+.IX XDR "Sun technical notes"
+.LP
+This chapter contains technical notes on Sun's implementation of the
+External Data Representation (XDR) standard, a set of library routines
+that allow a C programmer to describe arbitrary data structures in a
+machinex-independent fashion.  
+For a formal specification of the XDR
+standard, see the
+.I "External Data Representation Standard: Protocol Specification".
+XDR is the backbone of Sun's Remote Procedure Call package, in the 
+sense that data for remote procedure calls is transmitted using the 
+standard.  XDR library routines should be used to transmit data
+that is accessed (read or written) by more than one type of machine.\**
+.FS
+.IX XDR "system routines"
+For a compete specification of the system External Data Representation
+routines, see the 
+.I xdr(3N) 
+manual page.
+.FE
+.LP
+This chapter contains a short tutorial overview of the XDR library 
+routines, a guide to accessing currently available XDR streams, and
+information on defining new streams and data types.  XDR was designed
+to work across different languages, operating systems, and machine 
+architectures.  Most users (particularly RPC users) will only need
+the information in the
+.I "Number Filters",
+.I "Floating Point Filters",
+and
+.I "Enumeration Filters"
+sections.  
+Programmers wishing to implement RPC and XDR on new machines
+will be interested in the rest of the chapter, as well as the
+.I "External Data Representaiton Standard: Protocol Specification",
+which will be their primary reference.
+.SH
+Note:
+.I
+.I rpcgen 
+can be used to write XDR routines even in cases where no RPC calls are
+being made.
+.LP
+On Sun systems,
+C programs that want to use XDR routines
+must include the file
+.I <rpc/rpc.h> ,
+which contains all the necessary interfaces to the XDR system.
+Since the C library
+.I libc.a
+contains all the XDR routines,
+compile as normal.
+.DS
+example% \fBcc\0\fIprogram\fP.c\fI
+.DE
+.ne 3i
+.NH 0
+\&Justification
+.IX XDR justification
+.LP
+Consider the following two programs,
+.I writer :
+.ie t .DS
+.el .DS L
+.ft CW
+#include <stdio.h>
+.sp.5
+main()			/* \fIwriter.c\fP */
+{
+	long i;
+.sp.5
+	for (i = 0; i < 8; i++) {
+		if (fwrite((char *)&i, sizeof(i), 1, stdout) != 1) {
+			fprintf(stderr, "failed!\en");
+			exit(1);
+		}
+	}
+	exit(0);
+}
+.DE
+and
+.I reader :
+.ie t .DS
+.el .DS L
+.ft CW
+#include <stdio.h>
+.sp.5
+main()			/* \fIreader.c\fP */
+{
+	long i, j;
+.sp.5
+	for (j = 0; j < 8; j++) {
+		if (fread((char *)&i, sizeof (i), 1, stdin) != 1) {
+			fprintf(stderr, "failed!\en");
+			exit(1);
+		}
+		printf("%ld ", i);
+	}
+	printf("\en");
+	exit(0);
+}
+.DE
+The two programs appear to be portable, because (a) they pass
+.I lint
+checking, and (b) they exhibit the same behavior when executed
+on two different hardware architectures, a Sun and a VAX.
+.LP
+Piping the output of the
+.I writer 
+program to the
+.I reader 
+program gives identical results on a Sun or a VAX.
+.DS
+.ft CW
+sun% \fBwriter | reader\fP
+0 1 2 3 4 5 6 7
+sun%
+
+
+vax% \fBwriter | reader\fP
+0 1 2 3 4 5 6 7
+vax%
+.DE
+With the advent of local area networks and 4.2BSD came the concept 
+of \*Qnetwork pipes\*U \(em a process produces data on one machine,
+and a second process consumes data on another machine.
+A network pipe can be constructed with
+.I writer 
+and
+.I reader .
+Here are the results if the first produces data on a Sun,
+and the second consumes data on a VAX.
+.DS
+.ft CW
+sun% \fBwriter | rsh vax reader\fP
+0 16777216 33554432 50331648 67108864 83886080 100663296
+117440512
+sun%
+.DE
+Identical results can be obtained by executing
+.I writer 
+on the VAX and
+.I reader 
+on the Sun.  These results occur because the byte ordering
+of long integers differs between the VAX and the Sun,
+even though word size is the same.
+Note that $16777216$ is $2 sup 24$ \(em
+when four bytes are reversed, the 1 winds up in the 24th bit.
+.LP
+Whenever data is shared by two or more machine types, there is
+a need for portable data.  Programs can be made data-portable by
+replacing the
+.I read() 
+and
+.I write() 
+calls with calls to an XDR library routine
+.I xdr_long() ,
+a filter that knows the standard representation
+of a long integer in its external form.
+Here are the revised versions of
+.I writer :
+.ie t .DS
+.el .DS L
+.ft CW
+#include <stdio.h>
+#include <rpc/rpc.h>	/* \fIxdr is a sub-library of rpc\fP */
+.sp.5
+main()		/* \fIwriter.c\fP */
+{
+	XDR xdrs;
+	long i;
+.sp.5
+	xdrstdio_create(&xdrs, stdout, XDR_ENCODE);
+	for (i = 0; i < 8; i++) {
+		if (!xdr_long(&xdrs, &i)) {
+			fprintf(stderr, "failed!\en");
+			exit(1);
+		}
+	}
+	exit(0);
+}
+.DE
+and
+.I reader :
+.ie t .DS
+.el .DS L
+.ft CW
+#include <stdio.h>
+#include <rpc/rpc.h>	/* \fIxdr is a sub-library of rpc\fP */
+.sp.5
+main()		/* \fIreader.c\fP */
+{
+	XDR xdrs;
+	long i, j;
+.sp.5
+	xdrstdio_create(&xdrs, stdin, XDR_DECODE);
+	for (j = 0; j < 8; j++) {
+		if (!xdr_long(&xdrs, &i)) {
+			fprintf(stderr, "failed!\en");
+			exit(1);
+		}
+		printf("%ld ", i);
+	}
+	printf("\en");
+	exit(0);
+}
+.DE
+The new programs were executed on a Sun,
+on a VAX, and from a Sun to a VAX;
+the results are shown below.
+.DS
+.ft CW
+sun% \fBwriter | reader\fP
+0 1 2 3 4 5 6 7
+sun%
+
+vax% \fBwriter | reader\fP
+0 1 2 3 4 5 6 7
+vax%
+
+sun% \fBwriter | rsh vax reader\fP
+0 1 2 3 4 5 6 7
+sun%
+.DE
+.SH
+Note:
+.I
+.IX XDR "portable data"
+Integers are just the tip of the portable-data iceberg.  Arbitrary
+data structures present portability problems, particularly with
+respect to alignment and pointers.  Alignment on word boundaries
+may cause the size of a structure to vary from machine to machine.
+And pointers, which are very convenient to use, have no meaning
+outside the machine where they are defined.
+.LP
+.NH 1
+\&A Canonical Standard
+.IX XDR "canonical standard"
+.LP
+XDR's approach to standardizing data representations is 
+.I canonical .
+That is, XDR defines a single byte order (Big Endian), a single
+floating-point representation (IEEE), and so on.  Any program running on
+any machine can use XDR to create portable data by translating its
+local representation to the XDR standard representations; similarly, any
+program running on any machine can read portable data by translating the
+XDR standard representaions to its local equivalents.  The single standard
+completely decouples programs that create or send portable data from those
+that use or receive portable data.  The advent of a new machine or a new
+language has no effect upon the community of existing portable data creators
+and users.  A new machine joins this community by being \*Qtaught\*U how to
+convert the standard representations and its local representations; the
+local representations of other machines are irrelevant.  Conversely, to
+existing programs running on other machines, the local representations of
+the new machine are also irrelevant; such programs can immediately read
+portable data produced by the new machine because such data conforms to the
+canonical standards that they already understand.
+.LP
+There are strong precedents for XDR's canonical approach.  For example,
+TCP/IP, UDP/IP, XNS, Ethernet, and, indeed, all protocols below layer five
+of the ISO model, are canonical protocols.  The advantage of any canonical 
+approach is simplicity; in the case of XDR, a single set of conversion 
+routines is written once and is never touched again.  The canonical approach 
+has a disadvantage, but it is unimportant in real-world data transfer 
+applications.  Suppose two Little-Endian machines are transferring integers
+according to the XDR standard.  The sending machine converts the integers 
+from Little-Endian byte order to XDR (Big-Endian) byte order; the receiving
+machine performs the reverse conversion.  Because both machines observe the
+same byte order, their conversions are unnecessary.  The point, however, is
+not necessity, but cost as compared to the alternative.
+.LP
+The time spent converting to and from a canonical representation is
+insignificant, especially in networking applications.  Most of the time 
+required to prepare a data structure for transfer is not spent in conversion 
+but in traversing the elements of the data structure.  To transmit a tree, 
+for example, each leaf must be visited and each element in a leaf record must
+be copied to a buffer and aligned there; storage for the leaf may have to be
+deallocated as well.  Similarly, to receive a tree, storage must be 
+allocated for each leaf, data must be moved from the buffer to the leaf and
+properly aligned, and pointers must be constructed to link the leaves 
+together.  Every machine pays the cost of traversing and copying data
+structures whether or not conversion is required.  In networking 
+applications, communications overhead\(emthe time required to move the data
+down through the sender's protocol layers, across the network and up through 
+the receiver's protocol layers\(emdwarfs conversion overhead.
+.NH 1
+\&The XDR Library
+.IX "XDR" "library"
+.LP
+The XDR library not only solves data portability problems, it also
+allows you to write and read arbitrary C constructs in a consistent, 
+specified, well-documented manner.  Thus, it can make sense to use the 
+library even when the data is not shared among machines on a network.
+.LP
+The XDR library has filter routines for
+strings (null-terminated arrays of bytes),
+structures, unions, and arrays, to name a few.
+Using more primitive routines,
+you can write your own specific XDR routines
+to describe arbitrary data structures,
+including elements of arrays, arms of unions,
+or objects pointed at from other structures.
+The structures themselves may contain arrays of arbitrary elements,
+or pointers to other structures.
+.LP
+Let's examine the two programs more closely.
+There is a family of XDR stream creation routines
+in which each member treats the stream of bits differently.
+In our example, data is manipulated using standard I/O routines,
+so we use
+.I xdrstdio_create ().
+.IX xdrstdio_create() "" "\fIxdrstdio_create()\fP"
+The parameters to XDR stream creation routines
+vary according to their function.
+In our example,
+.I xdrstdio_create() 
+takes a pointer to an XDR structure that it initializes,
+a pointer to a
+.I FILE 
+that the input or output is performed on, and the operation.
+The operation may be
+.I XDR_ENCODE
+for serializing in the
+.I writer 
+program, or
+.I XDR_DECODE
+for deserializing in the
+.I reader 
+program.
+.LP
+Note: RPC users never need to create XDR streams;
+the RPC system itself creates these streams,
+which are then passed to the users.
+.LP
+The
+.I xdr_long() 
+.IX xdr_long() "" "\fIxdr_long()\fP"
+primitive is characteristic of most XDR library 
+primitives and all client XDR routines.
+First, the routine returns
+.I FALSE 
+(0) if it fails, and
+.I TRUE 
+(1) if it succeeds.
+Second, for each data type,
+.I xxx ,
+there is an associated XDR routine of the form:
+.DS
+.ft CW
+xdr_xxx(xdrs, xp)
+	XDR *xdrs;
+	xxx *xp;
+{
+}
+.DE
+In our case,
+.I xxx 
+is long, and the corresponding XDR routine is
+a primitive,
+.I xdr_long() .
+The client could also define an arbitrary structure
+.I xxx 
+in which case the client would also supply the routine
+.I xdr_xxx (),
+describing each field by calling XDR routines
+of the appropriate type.
+In all cases the first parameter,
+.I xdrs 
+can be treated as an opaque handle,
+and passed to the primitive routines.
+.LP
+XDR routines are direction independent;
+that is, the same routines are called to serialize or deserialize data.
+This feature is critical to software engineering of portable data.
+The idea is to call the same routine for either operation \(em
+this almost guarantees that serialized data can also be deserialized.
+One routine is used by both producer and consumer of networked data.
+This is implemented by always passing the address
+of an object rather than the object itself \(em
+only in the case of deserialization is the object modified.
+This feature is not shown in our trivial example,
+but its value becomes obvious when nontrivial data structures
+are passed among machines.  
+If needed, the user can obtain the
+direction of the XDR operation.  
+See the
+.I "XDR Operation Directions"
+section below for details.
+.LP
+Let's look at a slightly more complicated example.
+Assume that a person's gross assets and liabilities
+are to be exchanged among processes.
+Also assume that these values are important enough
+to warrant their own data type:
+.ie t .DS
+.el .DS L
+.ft CW
+struct gnumbers {
+	long g_assets;
+	long g_liabilities;
+};
+.DE
+The corresponding XDR routine describing this structure would be:
+.ie t .DS
+.el .DS L
+.ft CW
+bool_t  		/* \fITRUE is success, FALSE is failure\fP */
+xdr_gnumbers(xdrs, gp)
+	XDR *xdrs;
+	struct gnumbers *gp;
+{
+	if (xdr_long(xdrs, &gp->g_assets) &&
+	    xdr_long(xdrs, &gp->g_liabilities))
+		return(TRUE);
+	return(FALSE);
+}
+.DE
+Note that the parameter
+.I xdrs 
+is never inspected or modified;
+it is only passed on to the subcomponent routines.
+It is imperative to inspect the return value of each XDR routine call,
+and to give up immediately and return
+.I FALSE 
+if the subroutine fails.
+.LP
+This example also shows that the type
+.I bool_t
+is declared as an integer whose only values are
+.I TRUE 
+(1) and
+.I FALSE 
+(0).  This document uses the following definitions:
+.ie t .DS
+.el .DS L
+.ft CW
+#define bool_t	int
+#define TRUE	1
+#define FALSE	0
+.DE
+.LP
+Keeping these conventions in mind,
+.I xdr_gnumbers() 
+can be rewritten as follows:
+.ie t .DS
+.el .DS L
+.ft CW
+xdr_gnumbers(xdrs, gp)
+	XDR *xdrs;
+	struct gnumbers *gp;
+{
+	return(xdr_long(xdrs, &gp->g_assets) &&
+		xdr_long(xdrs, &gp->g_liabilities));
+}
+.DE
+This document uses both coding styles.
+.NH 1
+\&XDR Library Primitives
+.IX "library primitives for XDR"
+.IX XDR "library primitives"
+.LP
+This section gives a synopsis of each XDR primitive.
+It starts with basic data types and moves on to constructed data types.
+Finally, XDR utilities are discussed.
+The interface to these primitives
+and utilities is defined in the include file
+.I <rpc/xdr.h> ,
+automatically included by
+.I <rpc/rpc.h> .
+.NH 2
+\&Number Filters
+.IX "XDR library" "number filters"
+.LP
+The XDR library provides primitives to translate between numbers
+and their corresponding external representations.
+Primitives cover the set of numbers in:
+.DS
+.ft CW
+[signed, unsigned] * [short, int, long]
+.DE
+.ne 2i
+Specifically, the eight primitives are:
+.DS
+.ft CW
+bool_t xdr_char(xdrs, cp)
+	XDR *xdrs;
+	char *cp;
+.sp.5
+bool_t xdr_u_char(xdrs, ucp)
+	XDR *xdrs;
+	unsigned char *ucp;
+.sp.5
+bool_t xdr_int(xdrs, ip)
+	XDR *xdrs;
+	int *ip;
+.sp.5
+bool_t xdr_u_int(xdrs, up)
+	XDR *xdrs;
+	unsigned *up;
+.sp.5
+bool_t xdr_long(xdrs, lip)
+	XDR *xdrs;
+	long *lip;
+.sp.5
+bool_t xdr_u_long(xdrs, lup)
+	XDR *xdrs;
+	u_long *lup;
+.sp.5
+bool_t xdr_short(xdrs, sip)
+	XDR *xdrs;
+	short *sip;
+.sp.5
+bool_t xdr_u_short(xdrs, sup)
+	XDR *xdrs;
+	u_short *sup;
+.DE
+The first parameter,
+.I xdrs ,
+is an XDR stream handle.
+The second parameter is the address of the number
+that provides data to the stream or receives data from it.
+All routines return
+.I TRUE 
+if they complete successfully, and
+.I FALSE 
+otherwise.
+.NH 2
+\&Floating Point Filters
+.IX "XDR library" "floating point filters"
+.LP
+The XDR library also provides primitive routines
+for C's floating point types:
+.DS
+.ft CW
+bool_t xdr_float(xdrs, fp)
+	XDR *xdrs;
+	float *fp;
+.sp.5
+bool_t xdr_double(xdrs, dp)
+	XDR *xdrs;
+	double *dp;
+.DE
+The first parameter,
+.I xdrs 
+is an XDR stream handle.
+The second parameter is the address
+of the floating point number that provides data to the stream
+or receives data from it.
+Both routines return
+.I TRUE 
+if they complete successfully, and
+.I FALSE 
+otherwise.
+.LP
+Note: Since the numbers are represented in IEEE floating point,
+routines may fail when decoding a valid IEEE representation
+into a machine-specific representation, or vice-versa.
+.NH 2
+\&Enumeration Filters
+.IX "XDR library" "enumeration filters"
+.LP
+The XDR library provides a primitive for generic enumerations.
+The primitive assumes that a C
+.I enum 
+has the same representation inside the machine as a C integer.
+The boolean type is an important instance of the
+.I enum .
+The external representation of a boolean is always
+.I TRUE 
+(1) or 
+.I FALSE 
+(0).
+.DS
+.ft CW
+#define bool_t	int
+#define FALSE	0
+#define TRUE	1
+.sp.5
+#define enum_t int
+.sp.5
+bool_t xdr_enum(xdrs, ep)
+	XDR *xdrs;
+	enum_t *ep;
+.sp.5
+bool_t xdr_bool(xdrs, bp)
+	XDR *xdrs;
+	bool_t *bp;
+.DE
+The second parameters
+.I ep
+and
+.I bp
+are addresses of the associated type that provides data to, or 
+receives data from, the stream
+.I xdrs .
+.NH 2
+\&No Data
+.IX "XDR library" "no data"
+.LP
+Occasionally, an XDR routine must be supplied to the RPC system,
+even when no data is passed or required.
+The library provides such a routine:
+.DS
+.ft CW
+bool_t xdr_void();  /* \fIalways returns TRUE\fP */
+.DE
+.NH 2
+\&Constructed Data Type Filters
+.IX "XDR library" "constructed data type filters"
+.LP
+Constructed or compound data type primitives
+require more parameters and perform more complicated functions
+then the primitives discussed above.
+This section includes primitives for
+strings, arrays, unions, and pointers to structures.
+.LP
+Constructed data type primitives may use memory management.
+In many cases, memory is allocated when deserializing data with
+.I XDR_DECODE
+Therefore, the XDR package must provide means to deallocate memory.
+This is done by an XDR operation,
+.I XDR_FREE
+To review, the three XDR directional operations are
+.I XDR_ENCODE ,
+.I XDR_DECODE
+and
+.I XDR_FREE .
+.NH 3
+\&Strings
+.IX "XDR library" "strings"
+.LP
+In C, a string is defined as a sequence of bytes
+terminated by a null byte,
+which is not considered when calculating string length.
+However, when a string is passed or manipulated,
+a pointer to it is employed.
+Therefore, the XDR library defines a string to be a
+.I "char *"
+and not a sequence of characters.
+The external representation of a string is drastically different
+from its internal representation.
+Externally, strings are represented as
+sequences of ASCII characters,
+while internally, they are represented with character pointers.
+Conversion between the two representations
+is accomplished with the routine
+.I xdr_string ():
+.IX xdr_string() "" \fIxdr_string()\fP
+.DS
+.ft CW
+bool_t xdr_string(xdrs, sp, maxlength)
+	XDR *xdrs;
+	char **sp;
+	u_int maxlength;
+.DE
+The first parameter
+.I xdrs 
+is the XDR stream handle.
+The second parameter
+.I sp 
+is a pointer to a string (type
+.I "char **" .
+The third parameter
+.I maxlength 
+specifies the maximum number of bytes allowed during encoding or decoding.
+its value is usually specified by a protocol.  For example, a protocol
+specification may say that a file name may be no longer than 255 characters.
+.LP
+The routine returns
+.I FALSE 
+if the number of characters exceeds
+.I maxlength ,
+and
+.I TRUE 
+if it doesn't.
+.SH
+Keep
+.I maxlength 
+small.  If it is too big you can blow the heap, since
+.I xdr_string() 
+will call
+.I malloc() 
+for space.
+.LP
+The behavior of
+.I xdr_string() 
+.IX xdr_string() "" \fIxdr_string()\fP
+is similar to the behavior of other routines
+discussed in this section.  The direction
+.I XDR_ENCODE 
+is easiest to understand.  The parameter
+.I sp 
+points to a string of a certain length;
+if the string does not exceed
+.I maxlength ,
+the bytes are serialized.
+.LP
+The effect of deserializing a string is subtle.
+First the length of the incoming string is determined;
+it must not exceed
+.I maxlength .
+Next
+.I sp 
+is dereferenced; if the the value is
+.I NULL ,
+then a string of the appropriate length is allocated and
+.I *sp 
+is set to this string.
+If the original value of
+.I *sp 
+is non-null, then the XDR package assumes
+that a target area has been allocated,
+which can hold strings no longer than
+.I maxlength .
+In either case, the string is decoded into the target area.
+The routine then appends a null character to the string.
+.LP
+In the
+.I XDR_FREE 
+operation, the string is obtained by dereferencing
+.I sp .
+If the string is not
+.I NULL ,
+it is freed and
+.I *sp 
+is set to
+.I NULL .
+In this operation,
+.I xdr_string() 
+ignores the
+.I maxlength 
+parameter.
+.NH 3
+\&Byte Arrays
+.IX "XDR library" "byte arrays"
+.LP
+Often variable-length arrays of bytes are preferable to strings.
+Byte arrays differ from strings in the following three ways: 
+1) the length of the array (the byte count) is explicitly
+located in an unsigned integer,
+2) the byte sequence is not terminated by a null character, and
+3) the external representation of the bytes is the same as their
+internal representation.
+The primitive
+.I xdr_bytes() 
+.IX xdr_bytes() "" \fIxdr_bytes()\fP
+converts between the internal and external
+representations of byte arrays:
+.DS
+.ft CW
+bool_t xdr_bytes(xdrs, bpp, lp, maxlength)
+    XDR *xdrs;
+    char **bpp;
+    u_int *lp;
+    u_int maxlength;
+.DE
+The usage of the first, second and fourth parameters
+are identical to the first, second and third parameters of
+.I xdr_string (),
+respectively.
+The length of the byte area is obtained by dereferencing
+.I lp 
+when serializing;
+.I *lp 
+is set to the byte length when deserializing.
+.NH 3
+\&Arrays
+.IX "XDR library" "arrays"
+.LP
+The XDR library package provides a primitive
+for handling arrays of arbitrary elements.
+The
+.I xdr_bytes() 
+routine treats a subset of generic arrays,
+in which the size of array elements is known to be 1,
+and the external description of each element is built-in.
+The generic array primitive,
+.I xdr_array() ,
+.IX xdr_array() "" \fIxdr_array()\fP
+requires parameters identical to those of
+.I xdr_bytes() 
+plus two more:
+the size of array elements,
+and an XDR routine to handle each of the elements.
+This routine is called to encode or decode
+each element of the array.
+.DS
+.ft CW
+bool_t
+xdr_array(xdrs, ap, lp, maxlength, elementsiz, xdr_element)
+    XDR *xdrs;
+    char **ap;
+    u_int *lp;
+    u_int maxlength;
+    u_int elementsiz;
+    bool_t (*xdr_element)();
+.DE
+The parameter
+.I ap 
+is the address of the pointer to the array.
+If
+.I *ap 
+is
+.I NULL 
+when the array is being deserialized,
+XDR allocates an array of the appropriate size and sets
+.I *ap 
+to that array.
+The element count of the array is obtained from
+.I *lp 
+when the array is serialized;
+.I *lp 
+is set to the array length when the array is deserialized. 
+The parameter
+.I maxlength 
+is the maximum number of elements that the array is allowed to have;
+.I elementsiz
+is the byte size of each element of the array
+(the C function
+.I sizeof()
+can be used to obtain this value).
+The
+.I xdr_element() 
+.IX xdr_element() "" \fIxdr_element()\fP
+routine is called to serialize, deserialize, or free
+each element of the array.
+.br
+.LP
+Before defining more constructed data types, it is appropriate to 
+present three examples.
+.LP
+.I "Example A:"
+.br
+A user on a networked machine can be identified by 
+(a) the machine name, such as
+.I krypton :
+see the
+.I gethostname 
+man page; (b) the user's UID: see the
+.I geteuid 
+man page; and (c) the group numbers to which the user belongs: 
+see the
+.I getgroups 
+man page.  A structure with this information and its associated 
+XDR routine could be coded like this:
+.ie t .DS
+.el .DS L
+.ft CW
+struct netuser {
+    char    *nu_machinename;
+    int     nu_uid;
+    u_int   nu_glen;
+    int     *nu_gids;
+};
+#define NLEN 255    /* \fImachine names < 256 chars\fP */
+#define NGRPS 20    /* \fIuser can't be in > 20 groups\fP */
+.sp.5
+bool_t
+xdr_netuser(xdrs, nup)
+    XDR *xdrs;
+    struct netuser *nup;
+{
+    return(xdr_string(xdrs, &nup->nu_machinename, NLEN) &&
+        xdr_int(xdrs, &nup->nu_uid) &&
+        xdr_array(xdrs, &nup->nu_gids, &nup->nu_glen, 
+        NGRPS, sizeof (int), xdr_int));
+}
+.DE
+.LP
+.I "Example B:"
+.br
+A party of network users could be implemented
+as an array of
+.I netuser
+structure.
+The declaration and its associated XDR routines
+are as follows:
+.ie t .DS
+.el .DS L
+.ft CW
+struct party {
+    u_int p_len;
+    struct netuser *p_nusers;
+};
+#define PLEN 500    /* \fImax number of users in a party\fP */
+.sp.5
+bool_t
+xdr_party(xdrs, pp)
+    XDR *xdrs;
+    struct party *pp;
+{
+    return(xdr_array(xdrs, &pp->p_nusers, &pp->p_len, PLEN,
+        sizeof (struct netuser), xdr_netuser));
+}
+.DE
+.LP
+.I "Example C:"
+.br
+The well-known parameters to
+.I main ,
+.I argc
+and
+.I argv
+can be combined into a structure.
+An array of these structures can make up a history of commands.
+The declarations and XDR routines might look like:
+.ie t .DS
+.el .DS L
+.ft CW
+struct cmd {
+    u_int c_argc;
+    char **c_argv;
+};
+#define ALEN 1000   /* \fIargs cannot be > 1000 chars\fP */
+#define NARGC 100   /* \fIcommands cannot have > 100 args\fP */
+
+struct history {
+    u_int h_len;
+    struct cmd *h_cmds;
+};
+#define NCMDS 75    /* \fIhistory is no more than 75 commands\fP */
+
+bool_t
+xdr_wrap_string(xdrs, sp)
+    XDR *xdrs;
+    char **sp;
+{
+    return(xdr_string(xdrs, sp, ALEN));
+}
+.DE
+.ie t .DS
+.el .DS L
+.ft CW
+bool_t
+xdr_cmd(xdrs, cp)
+    XDR *xdrs;
+    struct cmd *cp;
+{
+    return(xdr_array(xdrs, &cp->c_argv, &cp->c_argc, NARGC,
+        sizeof (char *), xdr_wrap_string));
+}
+.DE
+.ie t .DS
+.el .DS L
+.ft CW
+bool_t
+xdr_history(xdrs, hp)
+    XDR *xdrs;
+    struct history *hp;
+{
+    return(xdr_array(xdrs, &hp->h_cmds, &hp->h_len, NCMDS,
+        sizeof (struct cmd), xdr_cmd));
+}
+.DE
+The most confusing part of this example is that the routine
+.I xdr_wrap_string() 
+is needed to package the
+.I xdr_string() 
+routine, because the implementation of
+.I xdr_array() 
+only passes two parameters to the array element description routine;
+.I xdr_wrap_string() 
+supplies the third parameter to
+.I xdr_string ().
+.LP
+By now the recursive nature of the XDR library should be obvious.
+Let's continue with more constructed data types.
+.NH 3
+\&Opaque Data
+.IX "XDR library" "opaque data"
+.LP
+In some protocols, handles are passed from a server to client.
+The client passes the handle back to the server at some later time.
+Handles are never inspected by clients;
+they are obtained and submitted.
+That is to say, handles are opaque.
+The
+.I xdr_opaque() 
+.IX xdr_opaque() "" \fIxdr_opaque()\fP
+primitive is used for describing fixed sized, opaque bytes.
+.DS
+.ft CW
+bool_t xdr_opaque(xdrs, p, len)
+    XDR *xdrs;
+    char *p;
+    u_int len;
+.DE
+The parameter
+.I p 
+is the location of the bytes;
+.I len
+is the number of bytes in the opaque object.
+By definition, the actual data
+contained in the opaque object are not machine portable.
+.NH 3
+\&Fixed Sized Arrays
+.IX "XDR library" "fixed sized arrays"
+.LP
+The XDR library provides a primitive,
+.I xdr_vector (),
+for fixed-length arrays.
+.ie t .DS
+.el .DS L
+.ft CW
+#define NLEN 255    /* \fImachine names must be < 256 chars\fP */
+#define NGRPS 20    /* \fIuser belongs to exactly 20 groups\fP */
+.sp.5
+struct netuser {
+    char *nu_machinename;
+    int nu_uid;
+    int nu_gids[NGRPS];
+};
+.sp.5
+bool_t
+xdr_netuser(xdrs, nup)
+    XDR *xdrs;
+    struct netuser *nup;
+{
+    int i;
+.sp.5
+    if (!xdr_string(xdrs, &nup->nu_machinename, NLEN))
+        return(FALSE);
+    if (!xdr_int(xdrs, &nup->nu_uid))
+        return(FALSE);
+    if (!xdr_vector(xdrs, nup->nu_gids, NGRPS, sizeof(int), 
+        xdr_int)) {
+            return(FALSE);
+    }
+    return(TRUE);
+}
+.DE
+.NH 3
+\&Discriminated Unions
+.IX "XDR library" "discriminated unions"
+.LP
+The XDR library supports discriminated unions.
+A discriminated union is a C union and an
+.I enum_t
+value that selects an \*Qarm\*U of the union.
+.DS
+.ft CW
+struct xdr_discrim {
+    enum_t value;
+    bool_t (*proc)();
+};
+.sp.5
+bool_t xdr_union(xdrs, dscmp, unp, arms, defaultarm)
+    XDR *xdrs;
+    enum_t *dscmp;
+    char *unp;
+    struct xdr_discrim *arms;
+    bool_t (*defaultarm)();  /* \fImay equal NULL\fP */
+.DE
+First the routine translates the discriminant of the union located at 
+.I *dscmp .
+The discriminant is always an
+.I enum_t .
+Next the union located at
+.I *unp 
+is translated.
+The parameter
+.I arms
+is a pointer to an array of
+.I xdr_discrim
+structures. 
+Each structure contains an ordered pair of
+.I [value,proc] .
+If the union's discriminant is equal to the associated
+.I value ,
+then the
+.I proc
+is called to translate the union.
+The end of the
+.I xdr_discrim
+structure array is denoted by a routine of value
+.I NULL 
+(0).  If the discriminant is not found in the
+.I arms
+array, then the
+.I defaultarm
+procedure is called if it is non-null;
+otherwise the routine returns
+.I FALSE .
+.LP
+.I "Example D:"
+Suppose the type of a union may be integer,
+character pointer (a string), or a
+.I gnumbers 
+structure.
+Also, assume the union and its current type
+are declared in a structure.
+The declaration is:
+.ie t .DS
+.el .DS L
+.ft CW
+enum utype { INTEGER=1, STRING=2, GNUMBERS=3 };
+.sp.5
+struct u_tag {
+    enum utype utype;   /* \fIthe union's discriminant\fP */
+    union {
+        int ival;
+        char *pval;
+        struct gnumbers gn;
+    } uval;
+};
+.DE
+The following constructs and XDR procedure (de)serialize
+the discriminated union:
+.ie t .DS
+.el .DS L
+.ft CW
+struct xdr_discrim u_tag_arms[4] = {
+    { INTEGER, xdr_int },
+    { GNUMBERS, xdr_gnumbers }
+    { STRING, xdr_wrap_string },
+    { __dontcare__, NULL }
+    /* \fIalways terminate arms with a NULL xdr_proc\fP */
+}
+.sp.5
+bool_t
+xdr_u_tag(xdrs, utp)
+    XDR *xdrs;
+    struct u_tag *utp;
+{
+    return(xdr_union(xdrs, &utp->utype, &utp->uval,
+        u_tag_arms, NULL));
+}
+.DE
+The routine
+.I xdr_gnumbers() 
+was presented above in 
+.I "The XDR Library"
+section.
+.I xdr_wrap_string() 
+was presented in example C.
+The default 
+.I arm 
+parameter to
+.I xdr_union() 
+(the last parameter) is
+.I NULL 
+in this example.  Therefore the value of the union's discriminant
+may legally take on only values listed in the
+.I u_tag_arms 
+array.  This example also demonstrates that
+the elements of the arm's array do not need to be sorted.
+.LP
+It is worth pointing out that the values of the discriminant
+may be sparse, though in this example they are not.
+It is always good
+practice to assign explicitly integer values to each element of the
+discriminant's type.
+This practice both documents the external
+representation of the discriminant and guarantees that different
+C compilers emit identical discriminant values.
+.LP
+Exercise: Implement
+.I xdr_union() 
+using the other primitives in this section.
+.NH 3
+\&Pointers
+.IX "XDR library" "pointers"
+.LP
+In C it is often convenient to put pointers
+to another structure within a structure.
+The
+.I xdr_reference() 
+.IX xdr_reference() "" \fIxdr_reference()\fP
+primitive makes it easy to serialize, deserialize, and free
+these referenced structures.
+.DS
+.ft CW
+bool_t xdr_reference(xdrs, pp, size, proc)
+    XDR *xdrs;
+    char **pp;
+    u_int ssize;
+    bool_t (*proc)();
+.DE
+.LP
+Parameter
+.I pp 
+is the address of
+the pointer to the structure;
+parameter
+.I ssize
+is the size in bytes of the structure (use the C function
+.I sizeof() 
+to obtain this value); and
+.I proc
+is the XDR routine that describes the structure.
+When decoding data, storage is allocated if
+.I *pp 
+is
+.I NULL .
+.LP
+There is no need for a primitive
+.I xdr_struct() 
+to describe structures within structures,
+because pointers are always sufficient.
+.LP
+Exercise: Implement
+.I xdr_reference() 
+using
+.I xdr_array ().
+Warning:
+.I xdr_reference() 
+and
+.I xdr_array() 
+are NOT interchangeable external representations of data.
+.LP
+.I "Example E:"
+Suppose there is a structure containing a person's name
+and a pointer to a
+.I gnumbers 
+structure containing the person's gross assets and liabilities.
+The construct is:
+.DS
+.ft CW
+struct pgn {
+    char *name;
+    struct gnumbers *gnp;
+};
+.DE
+The corresponding XDR routine for this structure is:
+.DS
+.ft CW
+bool_t
+xdr_pgn(xdrs, pp)
+    XDR *xdrs;
+    struct pgn *pp;
+{
+    if (xdr_string(xdrs, &pp->name, NLEN) &&
+      xdr_reference(xdrs, &pp->gnp,
+      sizeof(struct gnumbers), xdr_gnumbers))
+        return(TRUE);
+    return(FALSE);
+}
+.DE
+.IX "pointer semantics and XDR"
+.I "Pointer Semantics and XDR" 
+.LP
+In many applications, C programmers attach double meaning to 
+the values of a pointer.  Typically the value
+.I NULL 
+(or zero) means data is not needed,
+yet some application-specific interpretation applies.
+In essence, the C programmer is encoding
+a discriminated union efficiently
+by overloading the interpretation of the value of a pointer.
+For instance, in example E a
+.I NULL 
+pointer value for
+.I gnp
+could indicate that
+the person's assets and liabilities are unknown.
+That is, the pointer value encodes two things:
+whether or not the data is known;
+and if it is known, where it is located in memory.
+Linked lists are an extreme example of the use
+of application-specific pointer interpretation.
+.LP
+The primitive
+.I xdr_reference() 
+.IX xdr_reference() "" \fIxdr_reference()\fP
+cannot and does not attach any special
+meaning to a null-value pointer during serialization.
+That is, passing an address of a pointer whose value is
+.I NULL 
+to
+.I xdr_reference() 
+when serialing data will most likely cause a memory fault and, on the UNIX
+system, a core dump.
+.LP
+.I xdr_pointer() 
+correctly handles 
+.I NULL 
+pointers.  For more information about its use, see 
+the
+.I "Linked Lists"
+topics below.
+.LP
+.I Exercise:
+After reading the section on
+.I "Linked Lists" ,
+return here and extend example E so that
+it can correctly deal with 
+.I NULL 
+pointer values.
+.LP
+.I Exercise:
+Using the
+.I xdr_union (),
+.I xdr_reference() 
+and
+.I xdr_void() 
+primitives, implement a generic pointer handling primitive
+that implicitly deals with
+.I NULL 
+pointers.  That is, implement
+.I xdr_pointer ().
+.NH 2
+\&Non-filter Primitives
+.IX "XDR" "non-filter primitives"
+.LP
+XDR streams can be manipulated with
+the primitives discussed in this section.
+.DS
+.ft CW
+u_int xdr_getpos(xdrs)
+    XDR *xdrs;
+.sp.5
+bool_t xdr_setpos(xdrs, pos)
+    XDR *xdrs;
+    u_int pos;
+.sp.5
+xdr_destroy(xdrs)
+    XDR *xdrs;
+.DE
+The routine
+.I xdr_getpos() 
+.IX xdr_getpos() "" \fIxdr_getpos()\fP
+returns an unsigned integer
+that describes the current position in the data stream.
+Warning: In some XDR streams, the returned value of
+.I xdr_getpos() 
+is meaningless;
+the routine returns a \-1 in this case
+(though \-1 should be a legitimate value).
+.LP
+The routine
+.I xdr_setpos() 
+.IX xdr_setpos() "" \fIxdr_setpos()\fP
+sets a stream position to
+.I pos .
+Warning: In some XDR streams, setting a position is impossible;
+in such cases,
+.I xdr_setpos() 
+will return
+.I FALSE .
+This routine will also fail if the requested position is out-of-bounds.
+The definition of bounds varies from stream to stream.
+.LP
+The
+.I xdr_destroy() 
+.IX xdr_destroy() "" \fIxdr_destroy()\fP
+primitive destroys the XDR stream.
+Usage of the stream
+after calling this routine is undefined.
+.NH 2
+\&XDR Operation Directions
+.IX XDR "operation directions"
+.IX "direction of XDR operations"
+.LP
+At times you may wish to optimize XDR routines by taking
+advantage of the direction of the operation \(em
+.I XDR_ENCODE
+.I XDR_DECODE
+or
+.I XDR_FREE
+The value
+.I xdrs->x_op
+always contains the direction of the XDR operation.
+Programmers are not encouraged to take advantage of this information.
+Therefore, no example is presented here.  However, an example in the
+.I "Linked Lists"
+topic below, demonstrates the usefulness of the
+.I xdrs->x_op
+field.
+.NH 2
+\&XDR Stream Access
+.IX "XDR" "stream access"
+.LP
+An XDR stream is obtained by calling the appropriate creation routine.
+These creation routines take arguments that are tailored to the
+specific properties of the stream.
+.LP
+Streams currently exist for (de)serialization of data to or from
+standard I/O
+.I FILE
+streams, TCP/IP connections and UNIX files, and memory.
+.NH 3
+\&Standard I/O Streams
+.IX "XDR" "standard I/O streams"
+.LP
+XDR streams can be interfaced to standard I/O using the
+.I xdrstdio_create() 
+.IX xdrstdio_create() "" \fIxdrstdio_create()\fP
+routine as follows:
+.DS
+.ft CW
+#include <stdio.h>
+#include <rpc/rpc.h>    /* \fIxdr streams part of rpc\fP */
+.sp.5
+void
+xdrstdio_create(xdrs, fp, x_op)
+    XDR *xdrs;
+    FILE *fp;
+    enum xdr_op x_op;
+.DE
+The routine
+.I xdrstdio_create() 
+initializes an XDR stream pointed to by
+.I xdrs .
+The XDR stream interfaces to the standard I/O library.
+Parameter
+.I fp
+is an open file, and
+.I x_op
+is an XDR direction.
+.NH 3
+\&Memory Streams
+.IX "XDR" "memory streams"
+.LP
+Memory streams allow the streaming of data into or out of
+a specified area of memory:
+.DS
+.ft CW
+#include <rpc/rpc.h>
+.sp.5
+void
+xdrmem_create(xdrs, addr, len, x_op)
+    XDR *xdrs;
+    char *addr;
+    u_int len;
+    enum xdr_op x_op;
+.DE
+The routine
+.I xdrmem_create() 
+.IX xdrmem_create() "" \fIxdrmem_create()\fP
+initializes an XDR stream in local memory.
+The memory is pointed to by parameter
+.I addr ;
+parameter
+.I len
+is the length in bytes of the memory.
+The parameters
+.I xdrs
+and
+.I x_op
+are identical to the corresponding parameters of
+.I xdrstdio_create ().
+Currently, the UDP/IP implementation of RPC uses
+.I xdrmem_create ().
+Complete call or result messages are built in memory before calling the
+.I sendto() 
+system routine.
+.NH 3
+\&Record (TCP/IP) Streams
+.IX "XDR" "record (TCP/IP) streams"
+.LP
+A record stream is an XDR stream built on top of
+a record marking standard that is built on top of the
+UNIX file or 4.2 BSD connection interface.
+.DS
+.ft CW
+#include <rpc/rpc.h>    /* \fIxdr streams part of rpc\fP */
+.sp.5
+xdrrec_create(xdrs,
+  sendsize, recvsize, iohandle, readproc, writeproc)
+    XDR *xdrs;
+    u_int sendsize, recvsize;
+    char *iohandle;
+    int (*readproc)(), (*writeproc)();
+.DE
+The routine
+.I xdrrec_create() 
+provides an XDR stream interface that allows for a bidirectional,
+arbitrarily long sequence of records.
+The contents of the records are meant to be data in XDR form.
+The stream's primary use is for interfacing RPC to TCP connections.
+However, it can be used to stream data into or out of normal
+UNIX files.
+.LP
+The parameter
+.I xdrs
+is similar to the corresponding parameter described above.
+The stream does its own data buffering similar to that of standard I/O.
+The parameters
+.I sendsize
+and
+.I recvsize
+determine the size in bytes of the output and input buffers, respectively;
+if their values are zero (0), then predetermined defaults are used.
+When a buffer needs to be filled or flushed, the routine
+.I readproc() 
+or
+.I writeproc() 
+is called, respectively.
+The usage and behavior of these
+routines are similar to the UNIX system calls
+.I read() 
+and
+.I write ().
+However,
+the first parameter to each of these routines is the opaque parameter
+.I iohandle .
+The other two parameters
+.I buf ""
+and
+.I nbytes )
+and the results
+(byte count) are identical to the system routines.
+If
+.I xxx 
+is
+.I readproc() 
+or
+.I writeproc (),
+then it has the following form:
+.DS
+.ft CW
+.ft I
+/*
+ * returns the actual number of bytes transferred.
+ * -1 is an error
+ */
+.ft CW
+int
+xxx(iohandle, buf, len)
+    char *iohandle;
+    char *buf;
+    int nbytes;
+.DE
+The XDR stream provides means for delimiting records in the byte stream.
+The implementation details of delimiting records in a stream are
+discussed in the
+.I "Advanced Topics"
+topic below.
+The primitives that are specific to record streams are as follows:
+.DS
+.ft CW
+bool_t
+xdrrec_endofrecord(xdrs, flushnow)
+    XDR *xdrs;
+    bool_t flushnow;
+.sp.5
+bool_t
+xdrrec_skiprecord(xdrs)
+    XDR *xdrs;
+.sp.5
+bool_t
+xdrrec_eof(xdrs)
+    XDR *xdrs;
+.DE
+The routine
+.I xdrrec_endofrecord() 
+.IX xdrrec_endofrecord() "" \fIxdrrec_endofrecord()\fP
+causes the current outgoing data to be marked as a record.
+If the parameter
+.I flushnow
+is
+.I TRUE ,
+then the stream's
+.I writeproc 
+will be called; otherwise,
+.I writeproc 
+will be called when the output buffer has been filled.
+.LP
+The routine
+.I xdrrec_skiprecord() 
+.IX xdrrec_skiprecord() "" \fIxdrrec_skiprecord()\fP
+causes an input stream's position to be moved past
+the current record boundary and onto the
+beginning of the next record in the stream.
+.LP
+If there is no more data in the stream's input buffer,
+then the routine
+.I xdrrec_eof() 
+.IX xdrrec_eof() "" \fIxdrrec_eof()\fP
+returns
+.I TRUE .
+That is not to say that there is no more data
+in the underlying file descriptor.
+.NH 2
+\&XDR Stream Implementation
+.IX "XDR" "stream implementation"
+.IX "stream implementation in XDR"
+.LP
+This section provides the abstract data types needed
+to implement new instances of XDR streams.
+.NH 3
+\&The XDR Object
+.IX "XDR" "object"
+.LP
+The following structure defines the interface to an XDR stream:
+.ie t .DS
+.el .DS L
+.ft CW
+enum xdr_op { XDR_ENCODE=0, XDR_DECODE=1, XDR_FREE=2 };
+.sp.5
+typedef struct {
+    enum xdr_op x_op;            /* \fIoperation; fast added param\fP */
+    struct xdr_ops {
+        bool_t  (*x_getlong)();  /* \fIget long from stream\fP */
+        bool_t  (*x_putlong)();  /* \fIput long to stream\fP */
+        bool_t  (*x_getbytes)(); /* \fIget bytes from stream\fP */
+        bool_t  (*x_putbytes)(); /* \fIput bytes to stream\fP */
+        u_int   (*x_getpostn)(); /* \fIreturn stream offset\fP */
+        bool_t  (*x_setpostn)(); /* \fIreposition offset\fP */
+        caddr_t (*x_inline)();   /* \fIptr to buffered data\fP */
+        VOID    (*x_destroy)();  /* \fIfree private area\fP */
+    } *x_ops;
+    caddr_t     x_public;        /* \fIusers' data\fP */
+    caddr_t     x_private;       /* \fIpointer to private data\fP */
+    caddr_t     x_base;          /* \fIprivate for position info\fP */
+    int         x_handy;         /* \fIextra private word\fP */
+} XDR;
+.DE
+The
+.I x_op
+field is the current operation being performed on the stream.
+This field is important to the XDR primitives,
+but should not affect a stream's implementation.
+That is, a stream's implementation should not depend
+on this value.
+The fields
+.I x_private ,
+.I x_base ,
+and
+.I x_handy
+are private to the particular
+stream's implementation.
+The field
+.I x_public
+is for the XDR client and should never be used by
+the XDR stream implementations or the XDR primitives.
+.I x_getpostn() ,
+.I x_setpostn()
+and
+.I x_destroy()
+are macros for accessing operations.  The operation
+.I x_inline()
+takes two parameters:
+an XDR *, and an unsigned integer, which is a byte count.
+The routine returns a pointer to a piece of
+the stream's internal buffer.
+The caller can then use the buffer segment for any purpose.
+From the stream's point of view, the bytes in the
+buffer segment have been consumed or put.
+The routine may return
+.I NULL 
+if it cannot return a buffer segment of the requested size.
+(The
+.I x_inline() 
+routine is for cycle squeezers.
+Use of the resulting buffer is not data-portable.
+Users are encouraged not to use this feature.) 
+.LP
+The operations
+.I x_getbytes()
+and
+.I x_putbytes()
+blindly get and put sequences of bytes
+from or to the underlying stream;
+they return
+.I TRUE 
+if they are successful, and
+.I FALSE 
+otherwise.  The routines have identical parameters (replace
+.I xxx ):
+.DS
+.ft CW
+bool_t
+xxxbytes(xdrs, buf, bytecount)
+	XDR *xdrs;
+	char *buf;
+	u_int bytecount;
+.DE
+The operations
+.I x_getlong()
+and
+.I x_putlong()
+receive and put
+long numbers from and to the data stream.
+It is the responsibility of these routines
+to translate the numbers between the machine representation
+and the (standard) external representation.
+The UNIX primitives
+.I htonl()
+and
+.I ntohl()
+can be helpful in accomplishing this.
+The higher-level XDR implementation assumes that
+signed and unsigned long integers contain the same number of bits,
+and that nonnegative integers
+have the same bit representations as unsigned integers.
+The routines return
+.I TRUE
+if they succeed, and
+.I FALSE 
+otherwise.  They have identical parameters:
+.DS
+.ft CW
+bool_t
+xxxlong(xdrs, lp)
+	XDR *xdrs;
+	long *lp;
+.DE
+Implementors of new XDR streams must make an XDR structure
+(with new operation routines) available to clients,
+using some kind of create routine.
+.NH 1
+\&Advanced Topics
+.IX XDR "advanced topics"
+.LP
+This section describes techniques for passing data structures that
+are not covered in the preceding sections.  Such structures include
+linked lists (of arbitrary lengths).  Unlike the simpler examples
+covered in the earlier sections, the following examples are written
+using both the XDR C library routines and the XDR data description 
+language.  
+The
+.I "External Data Representation Standard: Protocol Specification"
+describes this 
+language in complete detail.
+.NH 2
+\&Linked Lists
+.IX XDR "linked lists"
+.LP
+The last example in the
+.I Pointers
+topic earlier in this chapter 
+presented a C data structure and its associated XDR
+routines for a individual's gross assets and liabilities.  
+The example is duplicated below:
+.ie t .DS
+.el .DS L
+.ft CW
+struct gnumbers {
+	long g_assets;
+	long g_liabilities;
+};
+.sp.5
+bool_t
+xdr_gnumbers(xdrs, gp)
+	XDR *xdrs;
+	struct gnumbers *gp;
+{
+	if (xdr_long(xdrs, &(gp->g_assets)))
+		return(xdr_long(xdrs, &(gp->g_liabilities)));
+	return(FALSE);
+}
+.DE
+.LP
+Now assume that we wish to implement a linked list of such information. 
+A data structure could be constructed as follows:
+.ie t .DS
+.el .DS L
+.ft CW
+struct gnumbers_node {
+	struct gnumbers gn_numbers;
+	struct gnumbers_node *gn_next;
+};
+.sp .5
+typedef struct gnumbers_node *gnumbers_list;
+.DE
+.LP
+The head of the linked list can be thought of as the data object;
+that is, the head is not merely a convenient shorthand for a
+structure.  Similarly the 
+.I gn_next 
+field is used to indicate whether or not the object has terminated.  
+Unfortunately, if the object continues, the 
+.I gn_next 
+field is also the address of where it continues. The link addresses 
+carry no useful information when the object is serialized.
+.LP
+The XDR data description of this linked list is described by the 
+recursive declaration of 
+.I gnumbers_list :
+.ie t .DS
+.el .DS L
+.ft CW
+struct gnumbers {
+	int g_assets;
+	int g_liabilities;
+};
+.sp .5
+struct gnumbers_node {
+	gnumbers gn_numbers;
+	gnumbers_node *gn_next;
+};
+.DE
+.LP
+In this description, the boolean indicates whether there is more data
+following it. If the boolean is 
+.I FALSE ,
+then it is the last data field of the structure. If it is 
+.I TRUE ,
+then it is followed by a gnumbers structure and (recursively) by a 
+.I gnumbers_list .
+Note that the C declaration has no boolean explicitly declared in it 
+(though the 
+.I gn_next 
+field implicitly carries the information), while the XDR data 
+description has no pointer explicitly declared in it.
+.LP
+Hints for writing the XDR routines for a 
+.I gnumbers_list 
+follow easily from the XDR description above. Note how the primitive 
+.I xdr_pointer() 
+is used to implement the XDR union above.
+.ie t .DS
+.el .DS L
+.ft CW
+bool_t
+xdr_gnumbers_node(xdrs, gn)
+	XDR *xdrs;
+	gnumbers_node *gn;
+{
+	return(xdr_gnumbers(xdrs, &gn->gn_numbers) &&
+		xdr_gnumbers_list(xdrs, &gp->gn_next));
+}
+.sp .5
+bool_t
+xdr_gnumbers_list(xdrs, gnp)
+	XDR *xdrs;
+	gnumbers_list *gnp;
+{
+	return(xdr_pointer(xdrs, gnp, 
+		sizeof(struct gnumbers_node), 
+		xdr_gnumbers_node));
+}
+.DE
+.LP
+The unfortunate side effect of XDR'ing a list with these routines
+is that the C stack grows linearly with respect to the number of
+node in the list.  This is due to the recursion. The following
+routine collapses the above two mutually recursive into a single,
+non-recursive one.
+.ie t .DS
+.el .DS L
+.ft CW
+bool_t
+xdr_gnumbers_list(xdrs, gnp)
+	XDR *xdrs;
+	gnumbers_list *gnp;
+{
+	bool_t more_data;
+	gnumbers_list *nextp;
+.sp .5
+	for (;;) {
+		more_data = (*gnp != NULL);
+		if (!xdr_bool(xdrs, &more_data)) {
+			return(FALSE);
+		}
+		if (! more_data) {
+			break;
+		}
+		if (xdrs->x_op == XDR_FREE) {
+			nextp = &(*gnp)->gn_next;
+		}
+		if (!xdr_reference(xdrs, gnp, 
+			sizeof(struct gnumbers_node), xdr_gnumbers)) {
+
+		return(FALSE);
+		}
+		gnp = (xdrs->x_op == XDR_FREE) ? 
+			nextp : &(*gnp)->gn_next;
+	}
+	*gnp = NULL;
+	return(TRUE);
+}
+.DE
+.LP
+The first task is to find out whether there is more data or not,
+so that this boolean information can be serialized. Notice that
+this statement is unnecessary in the 
+.I XDR_DECODE 
+case, since the value of more_data is not known until we 
+deserialize it in the next statement.
+.LP
+The next statement XDR's the more_data field of the XDR union. 
+Then if there is truly no more data, we set this last pointer to 
+.I NULL 
+to indicate the end of the list, and return 
+.I TRUE 
+because we are done. Note that setting the pointer to 
+.I NULL 
+is only important in the 
+.I XDR_DECODE 
+case, since it is already 
+.I NULL 
+in the 
+.I XDR_ENCODE 
+and 
+XDR_FREE 
+cases.
+.LP
+Next, if the direction is 
+.I XDR_FREE ,
+the value of 
+.I nextp 
+is set to indicate the location of the next pointer in the list. 
+We do this now because we need to dereference gnp to find the 
+location of the next item in the list, and after the next 
+statement the storage pointed to by
+.I gnp 
+will be freed up and no be longer valid.  We can't do this for all
+directions though, because in the 
+.I XDR_DECODE 
+direction the value of 
+.I gnp 
+won't be set until the next statement.
+.LP
+Next, we XDR the data in the node using the primitive 
+.I xdr_reference ().
+.I xdr_reference() 
+is like 
+.I xdr_pointer() 
+which we used before, but it does not
+send over the boolean indicating whether there is more data. 
+We use it instead of 
+.I xdr_pointer() 
+because we have already XDR'd this information ourselves. Notice 
+that the xdr routine passed is not the same type as an element 
+in the list. The routine passed is 
+.I xdr_gnumbers (),
+for XDR'ing gnumbers, but each element in the list is actually of 
+type 
+.I gnumbers_node .
+We don't pass 
+.I xdr_gnumbers_node() 
+because it is recursive, and instead use 
+.I xdr_gnumbers() 
+which XDR's all of the non-recursive part.  Note that this trick 
+will work only if the 
+.I gn_numbers 
+field is the first item in each element, so that their addresses 
+are identical when passed to 
+.I xdr_reference ().
+.LP
+Finally, we update 
+.I gnp 
+to point to the next item in the list. If the direction is 
+.I XDR_FREE ,
+we set it to the previously saved value, otherwise we can 
+dereference 
+.I gnp 
+to get the proper value.  Though harder to understand than the 
+recursive version, this non-recursive routine is far less likely
+to blow the C stack.  It will also run more efficiently since
+a lot of procedure call overhead has been removed. Most lists 
+are small though (in the hundreds of items or less) and the 
+recursive version should be sufficient for them.
+.EQ
+delim off
+.EN
diff --git a/lib/libc/rpc/PSD.doc/xdr.rfc.ms b/lib/libc/rpc/PSD.doc/xdr.rfc.ms
new file mode 100644
index 0000000..d4baff5
--- /dev/null
+++ b/lib/libc/rpc/PSD.doc/xdr.rfc.ms
@@ -0,0 +1,1058 @@
+.\"
+.\"  Must use -- tbl -- with this one
+.\"
+.\" @(#)xdr.rfc.ms	2.2 88/08/05 4.0 RPCSRC
+.de BT
+.if \\n%=1 .tl ''- % -''
+..
+.ND
+.\" prevent excess underlining in nroff
+.if n .fp 2 R
+.OH 'External Data Representation Standard''Page %'
+.EH 'Page %''External Data Representation Standard'
+.IX "External Data Representation"
+.if \\n%=1 .bp
+.SH
+\&External Data Representation Standard: Protocol Specification
+.IX XDR RFC
+.IX XDR "protocol specification"
+.LP
+.NH 0
+\&Status of this Standard
+.nr OF 1
+.IX XDR "RFC status"
+.LP
+Note: This chapter specifies a protocol that Sun Microsystems, Inc., and 
+others are using.  It has been designated RFC1014 by the ARPA Network
+Information Center.
+.NH 1
+Introduction
+\&
+.LP
+XDR is a standard for the description and encoding of data.  It is
+useful for transferring data between different computer
+architectures, and has been used to communicate data between such
+diverse machines as the Sun Workstation, VAX, IBM-PC, and Cray.
+XDR fits into the ISO presentation layer, and is roughly analogous in
+purpose to X.409, ISO Abstract Syntax Notation.  The major difference
+between these two is that XDR uses implicit typing, while X.409 uses
+explicit typing.
+.LP
+XDR uses a language to describe data formats.  The language can only
+be used only to describe data; it is not a programming language.
+This language allows one to describe intricate data formats in a
+concise manner. The alternative of using graphical representations
+(itself an informal language) quickly becomes incomprehensible when
+faced with complexity.  The XDR language itself is similar to the C
+language [1], just as Courier [4] is similar to Mesa. Protocols such
+as Sun RPC (Remote Procedure Call) and the NFS (Network File System)
+use XDR to describe the format of their data.
+.LP
+The XDR standard makes the following assumption: that bytes (or
+octets) are portable, where a byte is defined to be 8 bits of data.
+A given hardware device should encode the bytes onto the various
+media in such a way that other hardware devices may decode the bytes
+without loss of meaning.  For example, the Ethernet standard
+suggests that bytes be encoded in "little-endian" style [2], or least
+significant bit first.
+.NH 2
+\&Basic Block Size
+.IX XDR "basic block size"
+.IX XDR "block size"
+.LP
+The representation of all items requires a multiple of four bytes (or
+32 bits) of data.  The bytes are numbered 0 through n-1.  The bytes
+are read or written to some byte stream such that byte m always
+precedes byte m+1.  If the n bytes needed to contain the data are not
+a multiple of four, then the n bytes are followed by enough (0 to 3)
+residual zero bytes, r, to make the total byte count a multiple of 4.
+.LP
+We include the familiar graphic box notation for illustration and
+comparison.  In most illustrations, each box (delimited by a plus
+sign at the 4 corners and vertical bars and dashes) depicts a byte.
+Ellipses (...) between boxes show zero or more additional bytes where
+required.
+.ie t .DS
+.el .DS L
+\fIA Block\fP
+
+\f(CW+--------+--------+...+--------+--------+...+--------+
+| byte 0 | byte 1 |...|byte n-1|    0   |...|    0   |
++--------+--------+...+--------+--------+...+--------+
+|<-----------n bytes---------->|<------r bytes------>|
+|<-----------n+r (where (n+r) mod 4 = 0)>----------->|\fP
+
+.DE
+.NH 1
+\&XDR Data Types
+.IX XDR "data types"
+.IX "XDR data types"
+.LP
+Each of the sections that follow describes a data type defined in the
+XDR standard, shows how it is declared in the language, and includes
+a graphic illustration of its encoding.
+.LP
+For each data type in the language we show a general paradigm
+declaration.  Note that angle brackets (< and >) denote
+variable length sequences of data and square brackets ([ and ]) denote
+fixed-length sequences of data.  "n", "m" and "r" denote integers.
+For the full language specification and more formal definitions of
+terms such as "identifier" and "declaration", refer to
+.I "The XDR Language Specification" ,
+below.
+.LP
+For some data types, more specific examples are included.  
+A more extensive example of a data description is in
+.I "An Example of an XDR Data Description"
+below.
+.NH 2
+\&Integer
+.IX XDR integer
+.LP
+An XDR signed integer is a 32-bit datum that encodes an integer in
+the range [-2147483648,2147483647].  The integer is represented in
+two's complement notation.  The most and least significant bytes are
+0 and 3, respectively.  Integers are declared as follows:
+.ie t .DS
+.el .DS L
+\fIInteger\fP
+
+\f(CW(MSB)                   (LSB)
++-------+-------+-------+-------+
+|byte 0 |byte 1 |byte 2 |byte 3 |
++-------+-------+-------+-------+
+<------------32 bits------------>\fP
+.DE
+.NH 2
+\&Unsigned Integer
+.IX XDR "unsigned integer"
+.IX XDR "integer, unsigned"
+.LP
+An XDR unsigned integer is a 32-bit datum that encodes a nonnegative
+integer in the range [0,4294967295].  It is represented by an
+unsigned binary number whose most and least significant bytes are 0
+and 3, respectively.  An unsigned integer is declared as follows:
+.ie t .DS
+.el .DS L
+\fIUnsigned Integer\fP
+
+\f(CW(MSB)                   (LSB)
++-------+-------+-------+-------+
+|byte 0 |byte 1 |byte 2 |byte 3 |
++-------+-------+-------+-------+
+<------------32 bits------------>\fP
+.DE
+.NH 2
+\&Enumeration
+.IX XDR enumeration
+.LP
+Enumerations have the same representation as signed integers.
+Enumerations are handy for describing subsets of the integers.
+Enumerated data is declared as follows:
+.ft CW
+.DS
+enum { name-identifier = constant, ... } identifier;
+.DE
+For example, the three colors red, yellow, and blue could be
+described by an enumerated type:
+.DS
+.ft CW
+enum { RED = 2, YELLOW = 3, BLUE = 5 } colors;
+.DE
+It is an error to encode as an enum any other integer than those that
+have been given assignments in the enum declaration.
+.NH 2
+\&Boolean
+.IX XDR boolean
+.LP
+Booleans are important enough and occur frequently enough to warrant
+their own explicit type in the standard.  Booleans are declared as
+follows:
+.DS
+.ft CW
+bool identifier;
+.DE
+This is equivalent to:
+.DS
+.ft CW
+enum { FALSE = 0, TRUE = 1 } identifier;
+.DE
+.NH 2
+\&Hyper Integer and Unsigned Hyper Integer
+.IX XDR "hyper integer"
+.IX XDR "integer, hyper"
+.LP
+The standard also defines 64-bit (8-byte) numbers called hyper
+integer and unsigned hyper integer.  Their representations are the
+obvious extensions of integer and unsigned integer defined above.
+They are represented in two's complement notation.  The most and
+least significant bytes are 0 and 7, respectively.  Their
+declarations:
+.ie t .DS
+.el .DS L
+\fIHyper Integer\fP
+\fIUnsigned Hyper Integer\fP
+
+\f(CW(MSB)                                                   (LSB)
++-------+-------+-------+-------+-------+-------+-------+-------+
+|byte 0 |byte 1 |byte 2 |byte 3 |byte 4 |byte 5 |byte 6 |byte 7 |
++-------+-------+-------+-------+-------+-------+-------+-------+
+<----------------------------64 bits---------------------------->\fP
+.DE
+.NH 2
+\&Floating-point
+.IX XDR "integer, floating point"
+.IX XDR "floating-point integer"
+.LP
+The standard defines the floating-point data type "float" (32 bits or
+4 bytes).  The encoding used is the IEEE standard for normalized
+single-precision floating-point numbers [3].  The following three
+fields describe the single-precision floating-point number:
+.RS
+.IP \fBS\fP:
+The sign of the number.  Values 0 and  1 represent  positive and
+negative, respectively.  One bit.
+.IP \fBE\fP:
+The exponent of the number, base 2.  8  bits are devoted to this
+field.  The exponent is biased by 127.
+.IP \fBF\fP:
+The fractional part of the number's mantissa,  base 2.   23 bits
+are devoted to this field.
+.RE
+.LP
+Therefore, the floating-point number is described by:
+.DS
+(-1)**S * 2**(E-Bias) * 1.F
+.DE
+It is declared as follows:
+.ie t .DS
+.el .DS L
+\fISingle-Precision Floating-Point\fP
+
+\f(CW+-------+-------+-------+-------+
+|byte 0 |byte 1 |byte 2 |byte 3 |
+S|   E   |           F          |
++-------+-------+-------+-------+
+1|<- 8 ->|<-------23 bits------>|
+<------------32 bits------------>\fP
+.DE
+Just as the most and least significant bytes of a number are 0 and 3,
+the most and least significant bits of a single-precision floating-
+point number are 0 and 31.  The beginning bit (and most significant
+bit) offsets of S, E, and F are 0, 1, and 9, respectively.  Note that
+these numbers refer to the mathematical positions of the bits, and
+NOT to their actual physical locations (which vary from medium to
+medium).
+.LP
+The IEEE specifications should be consulted concerning the encoding
+for signed zero, signed infinity (overflow), and denormalized numbers
+(underflow) [3].  According to IEEE specifications, the "NaN" (not a
+number) is system dependent and should not be used externally.
+.NH 2
+\&Double-precision Floating-point
+.IX XDR "integer, double-precision floating point"
+.IX XDR "double-precision floating-point integer"
+.LP
+The standard defines the encoding for the double-precision floating-
+point data type "double" (64 bits or 8 bytes).  The encoding used is
+the IEEE standard for normalized double-precision floating-point
+numbers [3].  The standard encodes the following three fields, which
+describe the double-precision floating-point number:
+.RS
+.IP \fBS\fP:
+The sign of the number.  Values  0 and 1  represent positive and
+negative, respectively.  One bit.
+.IP \fBE\fP:
+The exponent of the number, base 2.  11 bits are devoted to this
+field.  The exponent is biased by 1023.
+.IP \fBF\fP:
+The fractional part of the number's  mantissa, base 2.   52 bits
+are devoted to this field.
+.RE
+.LP
+Therefore, the floating-point number is described by:
+.DS
+(-1)**S * 2**(E-Bias) * 1.F
+.DE
+It is declared as follows:
+.ie t .DS
+.el .DS L
+\fIDouble-Precision Floating-Point\fP
+
+\f(CW+------+------+------+------+------+------+------+------+
+|byte 0|byte 1|byte 2|byte 3|byte 4|byte 5|byte 6|byte 7|
+S|    E   |                    F                        |
++------+------+------+------+------+------+------+------+
+1|<--11-->|<-----------------52 bits------------------->|
+<-----------------------64 bits------------------------->\fP
+.DE
+Just as the most and least significant bytes of a number are 0 and 3,
+the most and least significant bits of a double-precision floating-
+point number are 0 and 63.  The beginning bit (and most significant
+bit) offsets of S, E , and F are 0, 1, and 12, respectively.  Note
+that these numbers refer to the mathematical positions of the bits,
+and NOT to their actual physical locations (which vary from medium to
+medium).
+.LP
+The IEEE specifications should be consulted concerning the encoding
+for signed zero, signed infinity (overflow), and denormalized numbers
+(underflow) [3].  According to IEEE specifications, the "NaN" (not a
+number) is system dependent and should not be used externally.
+.NH 2
+\&Fixed-length Opaque Data
+.IX XDR "fixed-length opaque data"
+.IX XDR "opaque data, fixed length"
+.LP
+At times, fixed-length uninterpreted data needs to be passed among
+machines.  This data is called "opaque" and is declared as follows:
+.DS
+.ft CW
+opaque identifier[n];
+.DE
+where the constant n is the (static) number of bytes necessary to
+contain the opaque data.  If n is not a multiple of four, then the n
+bytes are followed by enough (0 to 3) residual zero bytes, r, to make
+the total byte count of the opaque object a multiple of four.
+.ie t .DS
+.el .DS L
+\fIFixed-Length Opaque\fP
+
+\f(CW0        1     ...
++--------+--------+...+--------+--------+...+--------+
+| byte 0 | byte 1 |...|byte n-1|    0   |...|    0   |
++--------+--------+...+--------+--------+...+--------+
+|<-----------n bytes---------->|<------r bytes------>|
+|<-----------n+r (where (n+r) mod 4 = 0)------------>|\fP
+.DE
+.NH 2
+\&Variable-length Opaque Data
+.IX XDR "variable-length opaque data"
+.IX XDR "opaque data, variable length"
+.LP
+The standard also provides for variable-length (counted) opaque data,
+defined as a sequence of n (numbered 0 through n-1) arbitrary bytes
+to be the number n encoded as an unsigned integer (as described
+below), and followed by the n bytes of the sequence.
+.LP
+Byte m of the sequence always precedes byte m+1 of the sequence, and
+byte 0 of the sequence always follows the sequence's length (count).
+enough (0 to 3) residual zero bytes, r, to make the total byte count
+a multiple of four.  Variable-length opaque data is declared in the
+following way:
+.DS
+.ft CW
+opaque identifier<m>;
+.DE
+or
+.DS
+.ft CW
+opaque identifier<>;
+.DE
+The constant m denotes an upper bound of the number of bytes that the
+sequence may contain.  If m is not specified, as in the second
+declaration, it is assumed to be (2**32) - 1, the maximum length.
+The constant m would normally be found in a protocol specification.
+For example, a filing protocol may state that the maximum data
+transfer size is 8192 bytes, as follows:
+.DS
+.ft CW
+opaque filedata<8192>;
+.DE
+This can be illustrated as follows:
+.ie t .DS
+.el .DS L
+\fIVariable-Length Opaque\fP
+
+\f(CW0     1     2     3     4     5   ...
++-----+-----+-----+-----+-----+-----+...+-----+-----+...+-----+
+|        length n       |byte0|byte1|...| n-1 |  0  |...|  0  |
++-----+-----+-----+-----+-----+-----+...+-----+-----+...+-----+
+|<-------4 bytes------->|<------n bytes------>|<---r bytes--->|
+|<----n+r (where (n+r) mod 4 = 0)---->|\fP
+.DE
+.LP
+It   is  an error  to  encode  a  length  greater  than the maximum
+described in the specification.
+.NH 2
+\&String
+.IX XDR string
+.LP
+The standard defines a string of n (numbered 0 through n-1) ASCII
+bytes to be the number n encoded as an unsigned integer (as described
+above), and followed by the n bytes of the string.  Byte m of the
+string always precedes byte m+1 of the string, and byte 0 of the
+string always follows the string's length.  If n is not a multiple of
+four, then the n bytes are followed by enough (0 to 3) residual zero
+bytes, r, to make the total byte count a multiple of four.  Counted
+byte strings are declared as follows:
+.DS
+.ft CW
+string object<m>;
+.DE
+or
+.DS
+.ft CW
+string object<>;
+.DE
+The constant m denotes an upper bound of the number of bytes that a
+string may contain.  If m is not specified, as in the second
+declaration, it is assumed to be (2**32) - 1, the maximum length.
+The constant m would normally be found in a protocol specification.
+For example, a filing protocol may state that a file name can be no
+longer than 255 bytes, as follows:
+.DS
+.ft CW
+string filename<255>;
+.DE
+Which can be illustrated as:
+.ie t .DS
+.el .DS L
+\fIA String\fP
+
+\f(CW0     1     2     3     4     5   ...
++-----+-----+-----+-----+-----+-----+...+-----+-----+...+-----+
+|        length n       |byte0|byte1|...| n-1 |  0  |...|  0  |
++-----+-----+-----+-----+-----+-----+...+-----+-----+...+-----+
+|<-------4 bytes------->|<------n bytes------>|<---r bytes--->|
+|<----n+r (where (n+r) mod 4 = 0)---->|\fP
+.DE
+.LP
+It   is an  error  to  encode  a length greater  than   the maximum
+described in the specification.
+.NH 2
+\&Fixed-length Array
+.IX XDR "fixed-length array"
+.IX XDR "array, fixed length"
+.LP
+Declarations for fixed-length arrays of homogeneous elements are in
+the following form:
+.DS
+.ft CW
+type-name identifier[n];
+.DE
+Fixed-length arrays of elements numbered 0 through n-1 are encoded by
+individually encoding the elements of the array in their natural
+order, 0 through n-1.  Each element's size is a multiple of four
+bytes. Though all elements are of the same type, the elements may
+have different sizes.  For example, in a fixed-length array of
+strings, all elements are of type "string", yet each element will
+vary in its length.
+.ie t .DS
+.el .DS L
+\fIFixed-Length Array\fP
+
+\f(CW+---+---+---+---+---+---+---+---+...+---+---+---+---+
+|   element 0   |   element 1   |...|  element n-1  |
++---+---+---+---+---+---+---+---+...+---+---+---+---+
+|<--------------------n elements------------------->|\fP
+.DE
+.NH 2
+\&Variable-length Array
+.IX XDR "variable-length array"
+.IX XDR "array, variable length"
+.LP
+Counted arrays provide the ability to encode variable-length arrays
+of homogeneous elements.  The array is encoded as the element count n
+(an unsigned integer) followed by the encoding of each of the array's
+elements, starting with element 0 and progressing through element n-
+1.  The declaration for variable-length arrays follows this form:
+.DS
+.ft CW
+type-name identifier<m>;
+.DE
+or
+.DS
+.ft CW
+type-name identifier<>;
+.DE
+The constant m specifies the maximum acceptable element count of an
+array; if  m is not specified, as  in the second declaration, it is
+assumed to be (2**32) - 1.
+.ie t .DS
+.el .DS L
+\fICounted Array\fP
+
+\f(CW0  1  2  3
++--+--+--+--+--+--+--+--+--+--+--+--+...+--+--+--+--+
+|     n     | element 0 | element 1 |...|element n-1|
++--+--+--+--+--+--+--+--+--+--+--+--+...+--+--+--+--+
+|<-4 bytes->|<--------------n elements------------->|\fP
+.DE
+It is  an error to  encode  a  value of n that  is greater than the
+maximum described in the specification.
+.NH 2
+\&Structure
+.IX XDR structure
+.LP
+Structures are declared as follows:
+.DS
+.ft CW
+struct {
+	component-declaration-A;
+	component-declaration-B;
+	\&...
+} identifier;
+.DE
+The components of the structure are encoded in the order of their
+declaration in the structure.  Each component's size is a multiple of
+four bytes, though the components may be different sizes.
+.ie t .DS
+.el .DS L
+\fIStructure\fP
+
+\f(CW+-------------+-------------+...
+| component A | component B |...
++-------------+-------------+...\fP
+.DE
+.NH 2
+\&Discriminated Union
+.IX XDR "discriminated union"
+.IX XDR union discriminated
+.LP
+A discriminated union is a type composed of a discriminant followed
+by a type selected from a set of prearranged types according to the
+value of the discriminant.  The type of discriminant is either "int",
+"unsigned int", or an enumerated type, such as "bool".  The component
+types are called "arms" of the union, and are preceded by the value
+of the discriminant which implies their encoding.  Discriminated
+unions are declared as follows:
+.DS
+.ft CW
+union switch (discriminant-declaration) {
+	case discriminant-value-A:
+	arm-declaration-A;
+	case discriminant-value-B:
+	arm-declaration-B;
+	\&...
+	default: default-declaration;
+} identifier;
+.DE
+Each "case" keyword is followed by a legal value of the discriminant.
+The default arm is optional.  If it is not specified, then a valid
+encoding of the union cannot take on unspecified discriminant values.
+The size of the implied arm is always a multiple of four bytes.
+.LP
+The discriminated union is encoded as its discriminant followed by
+the encoding of the implied arm.
+.ie t .DS
+.el .DS L
+\fIDiscriminated Union\fP
+
+\f(CW0   1   2   3
++---+---+---+---+---+---+---+---+
+|  discriminant |  implied arm  |
++---+---+---+---+---+---+---+---+
+|<---4 bytes--->|\fP
+.DE
+.NH 2
+\&Void
+.IX XDR void
+.LP
+An XDR void is a 0-byte quantity.  Voids are useful for describing
+operations that take no data as input or no data as output. They are
+also useful in unions, where some arms may contain data and others do
+not.  The declaration is simply as follows:
+.DS
+.ft CW
+void;
+.DE
+Voids are illustrated as follows:
+.ie t .DS
+.el .DS L
+\fIVoid\fP
+
+\f(CW  ++
+  ||
+  ++
+--><-- 0 bytes\fP
+.DE
+.NH 2
+\&Constant
+.IX XDR constant
+.LP
+The data declaration for a constant follows this form:
+.DS
+.ft CW
+const name-identifier = n;
+.DE
+"const" is used to define a symbolic name for a constant; it does not
+declare any data.  The symbolic constant may be used anywhere a
+regular constant may be used.  For example, the following defines a
+symbolic constant DOZEN, equal to 12.
+.DS
+.ft CW
+const DOZEN = 12;
+.DE
+.NH 2
+\&Typedef
+.IX XDR typedef
+.LP
+"typedef" does not declare any data either, but serves to define new
+identifiers for declaring data. The syntax is:
+.DS
+.ft CW
+typedef declaration;
+.DE
+The new type name is actually the variable name in the declaration
+part of the typedef.  For example, the following defines a new type
+called "eggbox" using an existing type called "egg":
+.DS
+.ft CW
+typedef egg eggbox[DOZEN];
+.DE
+Variables declared using the new type name have the same type as the
+new type name would have in the typedef, if it was considered a
+variable.  For example, the following two declarations are equivalent
+in declaring the variable "fresheggs":
+.DS
+.ft CW
+eggbox  fresheggs;
+egg     fresheggs[DOZEN];
+.DE
+When a typedef involves a struct, enum, or union definition, there is
+another (preferred) syntax that may be used to define the same type.
+In general, a typedef of the following form:
+.DS
+.ft CW
+typedef <<struct, union, or enum definition>> identifier;
+.DE
+may be converted to the alternative form by removing the "typedef"
+part and placing the identifier after the "struct", "union", or
+"enum" keyword, instead of at the end.  For example, here are the two
+ways to define the type "bool":
+.DS
+.ft CW
+typedef enum {    /* \fIusing typedef\fP */
+	FALSE = 0,
+	TRUE = 1
+	} bool;
+
+enum bool {       /* \fIpreferred alternative\fP */
+	FALSE = 0,
+	TRUE = 1
+	};
+.DE
+The reason this syntax is preferred is one does not have to wait
+until the end of a declaration to figure out the name of the new
+type.
+.NH 2
+\&Optional-data
+.IX XDR "optional data"
+.IX XDR "data, optional"
+.LP
+Optional-data is one kind of union that occurs so frequently that we
+give it a special syntax of its own for declaring it.  It is declared
+as follows:
+.DS
+.ft CW
+type-name *identifier;
+.DE
+This is equivalent to the following union:
+.DS
+.ft CW
+union switch (bool opted) {
+	case TRUE:
+	type-name element;
+	case FALSE:
+	void;
+} identifier;
+.DE
+It is also equivalent to the following variable-length array
+declaration, since the boolean "opted" can be interpreted as the
+length of the array:
+.DS
+.ft CW
+type-name identifier<1>;
+.DE
+Optional-data is not so interesting in itself, but it is very useful
+for describing recursive data-structures such as linked-lists and
+trees.  For example, the following defines a type "stringlist" that
+encodes lists of arbitrary length strings:
+.DS
+.ft CW
+struct *stringlist {
+	string item<>;
+	stringlist next;
+};
+.DE
+It could have been equivalently declared as the following union:
+.DS
+.ft CW
+union stringlist switch (bool opted) {
+	case TRUE:
+		struct {
+			string item<>;
+			stringlist next;
+		} element;
+	case FALSE:
+		void;
+};
+.DE
+or as a variable-length array:
+.DS
+.ft CW
+struct stringlist<1> {
+	string item<>;
+	stringlist next;
+};
+.DE
+Both of these declarations obscure the intention of the stringlist
+type, so the optional-data declaration is preferred over both of
+them.  The optional-data type also has a close correlation to how
+recursive data structures are represented in high-level languages
+such as Pascal or C by use of pointers. In fact, the syntax is the
+same as that of the C language for pointers.
+.NH 2
+\&Areas for Future Enhancement
+.IX XDR futures
+.LP
+The XDR standard lacks representations for bit fields and bitmaps,
+since the standard is based on bytes.  Also missing are packed (or
+binary-coded) decimals.
+.LP
+The intent of the XDR standard was not to describe every kind of data
+that people have ever sent or will ever want to send from machine to
+machine. Rather, it only describes the most commonly used data-types
+of high-level languages such as Pascal or C so that applications
+written in these languages will be able to communicate easily over
+some medium.
+.LP
+One could imagine extensions to XDR that would let it describe almost
+any existing protocol, such as TCP.  The minimum necessary for this
+are support for different block sizes and byte-orders.  The XDR
+discussed here could then be considered the 4-byte big-endian member
+of a larger XDR family.
+.NH 1
+\&Discussion
+.sp 2
+.NH 2
+\&Why a Language for Describing Data?
+.IX XDR language
+.LP
+There are many advantages in using a data-description language such
+as  XDR  versus using  diagrams.   Languages are  more  formal than
+diagrams   and   lead  to less  ambiguous   descriptions  of  data.
+Languages are also easier  to understand and allow  one to think of
+other   issues instead of  the   low-level details of bit-encoding.
+Also,  there is  a close analogy  between the  types  of XDR and  a
+high-level language   such  as C   or    Pascal.   This makes   the
+implementation of XDR encoding and decoding modules an easier task.
+Finally, the language specification itself  is an ASCII string that
+can be passed from  machine to machine  to perform  on-the-fly data
+interpretation.
+.NH 2
+\&Why Only one Byte-Order for an XDR Unit?
+.IX XDR "byte order"
+.LP
+Supporting two byte-orderings requires a higher level protocol for
+determining in which byte-order the data is encoded.  Since XDR is
+not a protocol, this can't be done.  The advantage of this, though,
+is that data in XDR format can be written to a magnetic tape, for
+example, and any machine will be able to interpret it, since no
+higher level protocol is necessary for determining the byte-order.
+.NH 2
+\&Why does XDR use Big-Endian Byte-Order?
+.LP
+Yes, it is unfair, but having only one byte-order means you have to
+be unfair to somebody.  Many architectures, such as the Motorola
+68000 and IBM 370, support the big-endian byte-order.
+.NH 2
+\&Why is the XDR Unit Four Bytes Wide?
+.LP
+There is a tradeoff in choosing the XDR unit size.  Choosing a small
+size such as two makes the encoded data small, but causes alignment
+problems for machines that aren't aligned on these boundaries.  A
+large size such as eight means the data will be aligned on virtually
+every machine, but causes the encoded data to grow too big.  We chose
+four as a compromise.  Four is big enough to support most
+architectures efficiently, except for rare machines such as the
+eight-byte aligned Cray.  Four is also small enough to keep the
+encoded data restricted to a reasonable size.
+.NH 2
+\&Why must Variable-Length Data be Padded with Zeros?
+.IX XDR "variable-length data"
+.LP
+It is desirable that the same data encode into the same thing on all
+machines, so that encoded data can be meaningfully compared or
+checksummed.  Forcing the padded bytes to be zero ensures this.
+.NH 2
+\&Why is there No Explicit Data-Typing?
+.LP
+Data-typing has a relatively high cost for what small advantages it
+may have.  One cost is the expansion of data due to the inserted type
+fields.  Another is the added cost of interpreting these type fields
+and acting accordingly.  And most protocols already know what type
+they expect, so data-typing supplies only redundant information.
+However, one can still get the benefits of data-typing using XDR. One
+way is to encode two things: first a string which is the XDR data
+description of the encoded data, and then the encoded data itself.
+Another way is to assign a value to all the types in XDR, and then
+define a universal type which takes this value as its discriminant
+and for each value, describes the corresponding data type.
+.NH 1
+\&The XDR Language Specification
+.IX XDR language
+.sp 1
+.NH 2
+\&Notational Conventions
+.IX "XDR language" notation
+.LP
+This specification  uses an extended Backus-Naur Form  notation for
+describing the XDR language.   Here is  a brief description  of the
+notation:
+.IP  1.
+The characters
+.I | ,
+.I ( ,
+.I ) ,
+.I [ ,
+.I ] ,
+.I " ,
+and
+.I * 
+are special.
+.IP  2.
+Terminal symbols are  strings of any  characters surrounded by
+double quotes.
+.IP  3.
+Non-terminal symbols are strings of non-special characters.
+.IP  4.
+Alternative items are separated by a vertical bar ("\fI|\fP").
+.IP  5.
+Optional items are enclosed in brackets.
+.IP  6.
+Items are grouped together by enclosing them in parentheses.
+.IP  7.
+A
+.I * 
+following an item means  0 or more  occurrences of that item.
+.LP
+For example,  consider  the  following pattern:
+.DS L
+"a " "very" (", " " very")* [" cold " "and"]  " rainy " ("day" | "night")
+.DE
+.LP
+An infinite  number of  strings match  this pattern. A few  of them
+are:
+.DS
+"a very rainy day"
+"a very, very rainy day"
+"a very cold and  rainy day"
+"a very, very, very cold and  rainy night"
+.DE
+.NH 2
+\&Lexical Notes
+.IP  1.
+Comments begin with '/*' and terminate with '*/'.
+.IP  2.
+White space serves to separate items and is otherwise ignored.
+.IP  3.
+An identifier is a letter followed by  an optional sequence of
+letters, digits or underbar ('_').  The case of identifiers is
+not ignored.
+.IP  4.
+A  constant is  a  sequence  of  one  or  more decimal digits,
+optionally preceded by a minus-sign ('-').
+.NH 2
+\&Syntax Information
+.IX "XDR language" syntax
+.DS
+.ft CW
+declaration:
+	type-specifier identifier
+	| type-specifier identifier "[" value "]"
+	| type-specifier identifier "<" [ value ] ">"
+	| "opaque" identifier "[" value "]"
+	| "opaque" identifier "<" [ value ] ">"
+	| "string" identifier "<" [ value ] ">"
+	| type-specifier "*" identifier
+	| "void"
+.DE
+.DS
+.ft CW
+value:
+	constant
+	| identifier
+
+type-specifier:
+	  [ "unsigned" ] "int"
+	| [ "unsigned" ] "hyper"
+	| "float"
+	| "double"
+	| "bool"
+	| enum-type-spec
+	| struct-type-spec
+	| union-type-spec
+	| identifier
+.DE
+.DS
+.ft CW
+enum-type-spec:
+	"enum" enum-body
+
+enum-body:
+	"{"
+	( identifier "=" value )
+	( "," identifier "=" value )*
+	"}"
+.DE
+.DS
+.ft CW
+struct-type-spec:
+	"struct" struct-body
+
+struct-body:
+	"{"
+	( declaration ";" )
+	( declaration ";" )*
+	"}"
+.DE
+.DS
+.ft CW
+union-type-spec:
+	"union" union-body
+
+union-body:
+	"switch" "(" declaration ")" "{"
+	( "case" value ":" declaration ";" )
+	( "case" value ":" declaration ";" )*
+	[ "default" ":" declaration ";" ]
+	"}"
+
+constant-def:
+	"const" identifier "=" constant ";"
+.DE
+.DS
+.ft CW
+type-def:
+	"typedef" declaration ";"
+	| "enum" identifier enum-body ";"
+	| "struct" identifier struct-body ";"
+	| "union" identifier union-body ";"
+
+definition:
+	type-def
+	| constant-def
+
+specification:
+	definition *
+.DE
+.NH 3
+\&Syntax Notes
+.IX "XDR language" syntax
+.LP
+.IP  1.
+The following are keywords and cannot be used as identifiers:
+"bool", "case", "const", "default", "double", "enum", "float",
+"hyper", "opaque", "string", "struct", "switch", "typedef", "union",
+"unsigned" and "void".
+.IP  2.
+Only unsigned constants may be used as size specifications for
+arrays.  If an identifier is used, it must have been declared
+previously as an unsigned constant in a "const" definition.
+.IP  3.
+Constant and type identifiers within the scope of a specification
+are in the same name space and must be declared uniquely within this
+scope.
+.IP  4.
+Similarly, variable names must  be unique within  the scope  of
+struct and union declarations. Nested struct and union declarations
+create new scopes.
+.IP  5.
+The discriminant of a union must be of a type that evaluates to
+an integer. That is, "int", "unsigned int", "bool", an enumerated
+type or any typedefed type that evaluates to one of these is legal.
+Also, the case values must be one of the legal values of the
+discriminant.  Finally, a case value may not be specified more than
+once within the scope of a union declaration.
+.NH 1
+\&An Example of an XDR Data Description
+.LP
+Here is a short XDR data description of a thing called a "file",
+which might be used to transfer files from one machine to another.
+.ie t .DS
+.el .DS L
+.ft CW
+
+const MAXUSERNAME = 32;     /*\fI max length of a user name \fP*/
+const MAXFILELEN = 65535;   /*\fI max length of a file      \fP*/
+const MAXNAMELEN = 255;     /*\fI max length of a file name \fP*/
+
+.ft I
+/*
+ * Types of files:
+ */
+.ft CW
+
+enum filekind {
+	TEXT = 0,       /*\fI ascii data \fP*/
+	DATA = 1,       /*\fI raw data   \fP*/
+	EXEC = 2        /*\fI executable \fP*/
+};
+
+.ft I
+/*
+ * File information, per kind of file:
+ */
+.ft CW
+
+union filetype switch (filekind kind) {
+	case TEXT:
+		void;                           /*\fI no extra information \fP*/
+	case DATA:
+		string creator<MAXNAMELEN>;     /*\fI data creator         \fP*/
+	case EXEC:
+		string interpretor<MAXNAMELEN>; /*\fI program interpretor  \fP*/
+};
+
+.ft I
+/*
+ * A complete file:
+ */
+.ft CW
+
+struct file {
+	string filename<MAXNAMELEN>; /*\fI name of file \fP*/
+	filetype type;               /*\fI info about file \fP*/
+	string owner<MAXUSERNAME>;   /*\fI owner of file   \fP*/
+	opaque data<MAXFILELEN>;     /*\fI file data       \fP*/
+};
+.DE
+.LP
+Suppose now that there is  a user named  "john" who wants to  store
+his lisp program "sillyprog" that contains just  the data "(quit)".
+His file would be encoded as follows:
+.TS
+box tab (&) ;
+lfI lfI lfI lfI
+rfL rfL rfL l .
+Offset&Hex Bytes&ASCII&Description
+_
+0&00 00 00 09&....&Length of filename = 9
+4&73 69 6c 6c&sill&Filename characters
+8&79 70 72 6f&ypro& ... and more characters ...
+12&67 00 00 00&g...& ... and 3 zero-bytes of fill
+16&00 00 00 02&....&Filekind is EXEC = 2
+20&00 00 00 04&....&Length of interpretor = 4
+24&6c 69 73 70&lisp&Interpretor characters
+28&00 00 00 04&....&Length of owner = 4
+32&6a 6f 68 6e&john&Owner characters
+36&00 00 00 06&....&Length of file data = 6
+40&28 71 75 69&(qui&File data bytes ...
+44&74 29 00 00&t)..& ... and 2 zero-bytes of fill
+.TE
+.NH 1
+\&References
+.LP
+[1]  Brian W. Kernighan & Dennis M. Ritchie, "The C Programming
+Language", Bell Laboratories, Murray Hill, New Jersey, 1978.
+.LP
+[2]  Danny Cohen, "On Holy Wars and a Plea for Peace", IEEE Computer,
+October 1981.
+.LP
+[3]  "IEEE Standard for Binary Floating-Point Arithmetic", ANSI/IEEE
+Standard 754-1985, Institute of Electrical and Electronics
+Engineers, August 1985.
+.LP
+[4]  "Courier: The Remote Procedure Call Protocol", XEROX
+Corporation, XSIS 038112, December 1981.
diff --git a/lib/libc/rpc/README b/lib/libc/rpc/README
new file mode 100644
index 0000000..ad9d70f
--- /dev/null
+++ b/lib/libc/rpc/README
@@ -0,0 +1,233 @@
+RPCSRC 4.0 7/11/89
+
+This distribution contains Sun Microsystem's implementation of the
+RPC and XDR protocols and is compatible with 4.2BSD and 4.3BSD.  Also
+included is complete documentation, utilities, RPC service
+specification files, and demonstration services in the format used by
+the RPC protocol compiler (rpcgen).  See WHAT'S NEW below for
+details.
+
+NOTE ABOUT SECURE RPC:
+
+This release of RPCSRC contains most of the code needed to implement
+Secure RPC (see "DES Authentication" in the RPC Protocol Specification,
+doc/rpc.rfc.ms).  Due to legal considerations, we are unable to
+distribute an implementation of DES, the Data Encryption Standard, which
+Secure RPC requires.  For this reason, all of the files, documentation, and
+programs associated with Secure RPC have been placed into a separate
+directory, secure_rpc.  The RPC library contained in the main body of this
+release *DOES NOT* support Secure RPC.  See secure_rpc/README for more
+details.  (A DES library was posted in Volume 18 of comp.sources.unix.)
+
+If you wish to report bugs found in this release, send mail to:
+
+Portable ONC/NFS
+Sun Microsystems, Inc
+MS 12-33
+2550 Garcia Avenue
+Mountain View, CA  94043
+
+or send Email to nfsnet@sun.com (the Internet) or sun!nfsnet (Usenet).
+
+ROADMAP
+
+The directory hierarchy is as follows:
+
+    demo/       Various demonstration services
+    demo/dir        Remote directory lister
+    demo/msg        Remote console message delivery service
+    demo/sort       Remote sort service
+
+    doc/        Documentation for RPC, XDR and NFS in "-ms" format.
+
+    etc/        Utilities (rpcinfo and portmap).  portmap must be
+                started by root before any other RPC network services are
+                used.  SEE BELOW FOR BUGFIX TO 4.3BSD COMPILER.
+
+    man/        Manual pages for RPC library, rpcgen, and utilities.
+
+    rpc/        The RPC and XDR library.  SEE BELOW
+                FOR BUGFIX TO 4.2BSD COMPILER.
+
+    rpcgen/     The RPC Language compiler (for .x files)
+
+    rpcsvc/     Service definition files for various services and the
+                server and client code for the Remote Status service.
+
+    secure_rpc/ The files in this directory are used to build a version of
+                the RPC library with DES Authentication.  See the README
+                file in that directory for more details.
+
+BUILD INSTRUCTIONS
+
+Makefiles can be found in all directories except for man.  The
+Makefile in the top directory will cause these others to be invoked
+(except for in the doc, man and demo directories), in turn building the
+entire release.
+
+WARNING!  THE DEFAULT INSTALLATION PROCEDURES WILL INSTALL FILES
+IN /usr/include, /usr/lib, /usr/bin and /etc.
+
+The master RPC include file, rpc/rpc.h, is used by all programs and
+routines that use RPC.  It includes other RPC and system include files
+needed by the RPC system.  PLEASE NOTE: If your system has NFS, it
+may have been based on Sun's NFS Source.  The include files installed
+by this package may duplicate include files you will find on your NFS
+system.  The RPCSRC 4.0 include files are upwardly compatible to all
+NFS Source include files as of the date of this distribution (not
+including any new definitions or declarations added by your system
+vendor).  HOWEVER: Please read the comments towards the end of
+rpc/rpc.h regarding rpc/netdb.h.  You may need to uncomment the
+inclusion of that file if the structures it defines are already
+defined by your system's include files.
+
+After making any compiler fixes that are needed (see below), at
+the top directory, type:
+
+    make install
+
+For all installations, the Makefile macro DESTDIR is prepended to the
+installation path.  It is defined to be null in the Makefiles, so
+installations are relative to root.  (You will probably need root
+privileges for installing the files under the default path.)  To
+install the files under some other tree (e.g., /usr/local), use the
+command:
+
+    make install DESTDIR=/usr/local
+
+This will place the include files in /usr/local/usr/include, the RPC
+library in /usr/local/usr/lib, rpcgen in /usr/local/usr/bin, and the
+utilities in /usr/local/etc.  You'll have to edit the Makefiles or
+install the files by hand if you want to do anything other than this
+kind of relocation of the installation tree.
+
+The RPC library will be built and installed first.  By default it is
+installed in /usr/lib as "librpclib.a".  The directory
+/usr/include/rpc will also be created, and several header files will
+be installed there.  ALL RPC SERVICES INCLUDE THESE HEADER FILES.
+
+The programs in etc/ link in routines from librpclib.a.  If you change
+where it is installed, be sure to edit etc/'s Makefile to reflect this.
+These programs are installed in /etc.  PORTMAP MUST BE RUNNING ON
+YOUR SYSTEM BEFORE YOU START ANY OTHER RPC SERVICE.
+
+rpcgen is installed in /usr/bin.  This program is required to build
+the demonstration services in demo and the rstat client and server in
+rpcsvc/.
+
+The rpcsvc/ directory will install its files in the directory
+/usr/include/rpcsvc.  The Remote Status service (rstat_svc) will be
+compiled and installed in /etc.  If you wish to make this service
+available, you should either start this service when needed or have
+it started at boot time by invoking it in your /etc/rc.local script.
+(Be sure that portmap is started first!)  Sun has modified its
+version of inetd to automatically start RPC services.  (Use "make
+LIB=" when building rstat on a Sun Workstation.)  The Remote Status
+client (rstat) will be installed in /usr/bin.  This program queries
+the rstat_svc on a remote host and prints a system status summary
+similar to the one printed by "uptime".
+
+The documentation is not built during the "make install" command.
+Typing "make" in the doc directory will cause all of the manuals to
+be formatted using nroff into a single file.  We have had a report
+that certain "troff" equivalents have trouble processing the full
+manual.  If you have trouble, try building the manuals individually
+(see the Makefile).
+
+The demonstration services in the demo directory are not built by the
+top-level "make install" command.  To build these, cd to the demo
+directory and enter "make".  The three services will be built.
+RPCGEN MUST BE INSTALLED in a path that make can find.  To run the
+services, start the portmap program as root and invoke the service
+(you probably will want to put it in the background).  rpcinfo can be
+used to check that the service succeeded in getting registered with
+portmap, and to ping the service (see rpcinfo's man page).  You can
+then use the corresponding client program to exercise the service.
+To build these services on a Sun workstation, you must prevent the
+Makefile from trying to link the RPC library (as these routines are
+already a part of Sun's libc).  Use: "make LIB=".
+
+BUGFIX FOR 4.3BSD COMPILER
+
+The use of a 'void *' declaration for one of the arguments in
+the reply_proc() procedure in etc/rpcinfo.c will trigger a bug
+in the 4.3BSD compiler.  The bug is fixed by the following change to
+the compiler file mip/manifest.h:
+
+*** manifest.h.r1.1	Thu Apr 30 13:52:25 1987
+--- manifest.h.r1.2	Mon Nov 23 18:58:17 1987
+***************
+*** 21,27 ****
+  /*
+   * Bogus type values
+   */
+! #define TNULL	PTR		/* pointer to UNDEF */
+  #define TVOID	FTN		/* function returning UNDEF (for void) */
+  
+  /*
+--- 21,27 ----
+  /*
+   * Bogus type values
+   */
+! #define TNULL	INCREF(MOETY)	/* pointer to MOETY -- impossible type */
+  #define TVOID	FTN		/* function returning UNDEF (for void) */
+  
+  /*
+
+If you cannot fix your compiler, change the declaration in reply_proc()
+from 'void *' to 'char *'.
+
+BUGFIX FOR 4.2BSD COMPILER
+
+Unpatched 4.2BSD compilers complain about valid C.  You can make old
+compilers happy by changing some voids to ints.  However, the fix to
+the 4.2 VAX compiler is as follows (to mip/trees.c):
+
+*** trees.c.r1.1	Mon May 11 13:47:58 1987
+--- trees.c.r1.2	Wed Jul  2 18:28:52 1986
+***************
+*** 1247,1253 ****
+  		if(o==CAST && mt1==0)return(TYPL+TYMATCH);
+  		if( mt12 & MDBI ) return( TYPL+LVAL+TYMATCH );
+  		else if( (mt1&MENU)||(mt2&MENU) ) return( LVAL+NCVT+TYPL+PTMATCH+PUN );
+! 		else if( mt12 == 0 ) break;
+  		else if( mt1 & MPTR ) return( LVAL+PTMATCH+PUN );
+  		else if( mt12 & MPTI ) return( TYPL+LVAL+TYMATCH+PUN );
+  		break;
+--- 1261,1269 ----
+  		if(o==CAST && mt1==0)return(TYPL+TYMATCH);
+  		if( mt12 & MDBI ) return( TYPL+LVAL+TYMATCH );
+  		else if( (mt1&MENU)||(mt2&MENU) ) return( LVAL+NCVT+TYPL+PTMATCH+PUN );
+! 		/* if right is TVOID and looks like a CALL, is not ok */
+! 		else if (mt2 == 0 && (p->in.right->in.op == CALL || p->in.right->in.op == UNARY CALL))
+! 			break;
+  		else if( mt1 & MPTR ) return( LVAL+PTMATCH+PUN );
+  		else if( mt12 & MPTI ) return( TYPL+LVAL+TYMATCH+PUN );
+  		break;
+
+WHAT'S NEW IN THIS RELEASE: RPCSRC 4.0
+
+The previous release was RPCSRC 3.9.  As with all previous releases,
+this release is based directly on files from Sun Microsystem's
+implementation.
+
+Upgrade from RPCSRC 3.9
+
+1)  RPCSRC 4.0 upgrades RPCSRC 3.9.  Improvements from SunOS 4.0 have
+    been integrated into this release.
+
+Secure RPC (in the secure_rpc/ directory)
+
+2)  DES Authentication routines and programs are provided.
+3)  A new manual, "Secure NFS" is provided, which describes Secure RPC
+    and Secure NFS.
+4)  Skeleton routines and manual pages are provided which describe the
+    DES encryption procedures required by Secure RPC.  HOWEVER, NO DES
+    ROUTINE IS PROVIDED.
+
+New Functionality
+
+5)  rpcinfo can now be used to de-register services from the portmapper
+    which may have terminated abnormally.
+6)  A new client, rstat, is provided which queries the rstat_svc and
+    prints a status line similar to the one displayed by "uptime".
diff --git a/lib/libc/rpc/auth_none.c b/lib/libc/rpc/auth_none.c
new file mode 100644
index 0000000..b04d5e6
--- /dev/null
+++ b/lib/libc/rpc/auth_none.c
@@ -0,0 +1,136 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)auth_none.c 1.19 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)auth_none.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: auth_none.c,v 1.2 1995/05/30 05:41:11 rgrimes Exp $";
+#endif
+
+/*
+ * auth_none.c
+ * Creates a client authentication handle for passing "null"
+ * credentials and verifiers to remote systems.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <stdlib.h>
+#include <rpc/types.h>
+#include <rpc/xdr.h>
+#include <rpc/auth.h>
+#define MAX_MARSHEL_SIZE 20
+
+/*
+ * Authenticator operations routines
+ */
+static void	authnone_verf();
+static void	authnone_destroy();
+static bool_t	authnone_marshal();
+static bool_t	authnone_validate();
+static bool_t	authnone_refresh();
+
+static struct auth_ops ops = {
+	authnone_verf,
+	authnone_marshal,
+	authnone_validate,
+	authnone_refresh,
+	authnone_destroy
+};
+
+static struct authnone_private {
+	AUTH	no_client;
+	char	marshalled_client[MAX_MARSHEL_SIZE];
+	u_int	mcnt;
+} *authnone_private;
+
+AUTH *
+authnone_create()
+{
+	register struct authnone_private *ap = authnone_private;
+	XDR xdr_stream;
+	register XDR *xdrs;
+
+	if (ap == 0) {
+		ap = (struct authnone_private *)calloc(1, sizeof (*ap));
+		if (ap == 0)
+			return (0);
+		authnone_private = ap;
+	}
+	if (!ap->mcnt) {
+		ap->no_client.ah_cred = ap->no_client.ah_verf = _null_auth;
+		ap->no_client.ah_ops = &ops;
+		xdrs = &xdr_stream;
+		xdrmem_create(xdrs, ap->marshalled_client, (u_int)MAX_MARSHEL_SIZE,
+		    XDR_ENCODE);
+		(void)xdr_opaque_auth(xdrs, &ap->no_client.ah_cred);
+		(void)xdr_opaque_auth(xdrs, &ap->no_client.ah_verf);
+		ap->mcnt = XDR_GETPOS(xdrs);
+		XDR_DESTROY(xdrs);
+	}
+	return (&ap->no_client);
+}
+
+/*ARGSUSED*/
+static bool_t
+authnone_marshal(client, xdrs)
+	AUTH *client;
+	XDR *xdrs;
+{
+	register struct authnone_private *ap = authnone_private;
+
+	if (ap == 0)
+		return (0);
+	return ((*xdrs->x_ops->x_putbytes)(xdrs,
+	    ap->marshalled_client, ap->mcnt));
+}
+
+static void
+authnone_verf()
+{
+}
+
+static bool_t
+authnone_validate()
+{
+
+	return (TRUE);
+}
+
+static bool_t
+authnone_refresh()
+{
+
+	return (FALSE);
+}
+
+static void
+authnone_destroy()
+{
+}
diff --git a/lib/libc/rpc/auth_unix.c b/lib/libc/rpc/auth_unix.c
new file mode 100644
index 0000000..b63b959
--- /dev/null
+++ b/lib/libc/rpc/auth_unix.c
@@ -0,0 +1,349 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)auth_unix.c 1.19 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)auth_unix.c	2.2 88/08/01 4.0 RPCSRC";*/
+static char *rcsid = "$Id: auth_unix.c,v 1.4 1995/05/30 05:41:12 rgrimes Exp $";
+#endif
+
+/*
+ * auth_unix.c, Implements UNIX style authentication parameters.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ *
+ * The system is very weak.  The client uses no encryption for it's
+ * credentials and only sends null verifiers.  The server sends backs
+ * null verifiers or optionally a verifier that suggests a new short hand
+ * for the credentials.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include <sys/param.h>
+#include <rpc/types.h>
+#include <rpc/xdr.h>
+#include <rpc/auth.h>
+#include <rpc/auth_unix.h>
+
+/*
+ * Unix authenticator operations vector
+ */
+static void	authunix_nextverf();
+static bool_t	authunix_marshal();
+static bool_t	authunix_validate();
+static bool_t	authunix_refresh();
+static void	authunix_destroy();
+
+static struct auth_ops auth_unix_ops = {
+	authunix_nextverf,
+	authunix_marshal,
+	authunix_validate,
+	authunix_refresh,
+	authunix_destroy
+};
+
+/*
+ * This struct is pointed to by the ah_private field of an auth_handle.
+ */
+struct audata {
+	struct opaque_auth	au_origcred;	/* original credentials */
+	struct opaque_auth	au_shcred;	/* short hand cred */
+	u_long			au_shfaults;	/* short hand cache faults */
+	char			au_marshed[MAX_AUTH_BYTES];
+	u_int			au_mpos;	/* xdr pos at end of marshed */
+};
+#define	AUTH_PRIVATE(auth)	((struct audata *)auth->ah_private)
+
+static void marshal_new_auth();
+
+/*
+ * This goop is here because some servers refuse to accept a
+ * credential with more than some number (usually 8) supplementary
+ * groups.  Blargh!
+ */
+static int authunix_maxgrouplist = 0;
+
+void
+set_rpc_maxgrouplist(int num)
+{
+	authunix_maxgrouplist = num;
+}
+
+/*
+ * Create a unix style authenticator.
+ * Returns an auth handle with the given stuff in it.
+ */
+AUTH *
+authunix_create(machname, uid, gid, len, aup_gids)
+	char *machname;
+	int uid;
+	int gid;
+	register int len;
+	int *aup_gids;
+{
+	struct authunix_parms aup;
+	char mymem[MAX_AUTH_BYTES];
+	struct timeval now;
+	XDR xdrs;
+	register AUTH *auth;
+	register struct audata *au;
+
+	/*
+	 * Allocate and set up auth handle
+	 */
+	auth = (AUTH *)mem_alloc(sizeof(*auth));
+#ifndef KERNEL
+	if (auth == NULL) {
+		(void)fprintf(stderr, "authunix_create: out of memory\n");
+		return (NULL);
+	}
+#endif
+	au = (struct audata *)mem_alloc(sizeof(*au));
+#ifndef KERNEL
+	if (au == NULL) {
+		(void)fprintf(stderr, "authunix_create: out of memory\n");
+		return (NULL);
+	}
+#endif
+	auth->ah_ops = &auth_unix_ops;
+	auth->ah_private = (caddr_t)au;
+	auth->ah_verf = au->au_shcred = _null_auth;
+	au->au_shfaults = 0;
+
+	/*
+	 * fill in param struct from the given params
+	 */
+	(void)gettimeofday(&now,  (struct timezone *)0);
+	aup.aup_time = now.tv_sec;
+	aup.aup_machname = machname;
+	aup.aup_uid = uid;
+	aup.aup_gid = gid;
+	/* GW: continuation of max group list hack */
+	if(authunix_maxgrouplist != 0) {
+		aup.aup_len = ((len < authunix_maxgrouplist) ? len
+			       : authunix_maxgrouplist);
+	} else {
+		aup.aup_len = (u_int)len;
+	}
+	aup.aup_gids = aup_gids;
+
+	/*
+	 * Serialize the parameters into origcred
+	 */
+	xdrmem_create(&xdrs, mymem, MAX_AUTH_BYTES, XDR_ENCODE);
+	if (! xdr_authunix_parms(&xdrs, &aup))
+		abort();
+	au->au_origcred.oa_length = len = XDR_GETPOS(&xdrs);
+	au->au_origcred.oa_flavor = AUTH_UNIX;
+#ifdef KERNEL
+	au->au_origcred.oa_base = mem_alloc((u_int) len);
+#else
+	if ((au->au_origcred.oa_base = mem_alloc((u_int) len)) == NULL) {
+		(void)fprintf(stderr, "authunix_create: out of memory\n");
+		return (NULL);
+	}
+#endif
+	bcopy(mymem, au->au_origcred.oa_base, (u_int)len);
+
+	/*
+	 * set auth handle to reflect new cred.
+	 */
+	auth->ah_cred = au->au_origcred;
+	marshal_new_auth(auth);
+	return (auth);
+}
+
+/*
+ * Returns an auth handle with parameters determined by doing lots of
+ * syscalls.
+ */
+AUTH *
+authunix_create_default()
+{
+	register int len;
+	char machname[MAX_MACHINE_NAME + 1];
+	register int uid;
+	register int gid;
+	int gids[NGRPS];
+	int i;
+	gid_t real_gids[NGROUPS];
+
+	if (gethostname(machname, MAX_MACHINE_NAME) == -1)
+		abort();
+	machname[MAX_MACHINE_NAME] = 0;
+	uid = geteuid();
+	gid = getegid();
+	if ((len = getgroups(NGROUPS, real_gids)) < 0)
+		abort();
+	if(len > NGRPS) len = NGRPS; /* GW: turn `gid_t's into `int's */
+	for(i = 0; i < len; i++) {
+		gids[i] = real_gids[i];
+	}
+	return (authunix_create(machname, uid, gid, len, gids));
+}
+
+/*
+ * authunix operations
+ */
+
+static void
+authunix_nextverf(auth)
+	AUTH *auth;
+{
+	/* no action necessary */
+}
+
+static bool_t
+authunix_marshal(auth, xdrs)
+	AUTH *auth;
+	XDR *xdrs;
+{
+	register struct audata *au = AUTH_PRIVATE(auth);
+
+	return (XDR_PUTBYTES(xdrs, au->au_marshed, au->au_mpos));
+}
+
+static bool_t
+authunix_validate(auth, verf)
+	register AUTH *auth;
+	struct opaque_auth verf;
+{
+	register struct audata *au;
+	XDR xdrs;
+
+	if (verf.oa_flavor == AUTH_SHORT) {
+		au = AUTH_PRIVATE(auth);
+		xdrmem_create(&xdrs, verf.oa_base, verf.oa_length, XDR_DECODE);
+
+		if (au->au_shcred.oa_base != NULL) {
+			mem_free(au->au_shcred.oa_base,
+			    au->au_shcred.oa_length);
+			au->au_shcred.oa_base = NULL;
+		}
+		if (xdr_opaque_auth(&xdrs, &au->au_shcred)) {
+			auth->ah_cred = au->au_shcred;
+		} else {
+			xdrs.x_op = XDR_FREE;
+			(void)xdr_opaque_auth(&xdrs, &au->au_shcred);
+			au->au_shcred.oa_base = NULL;
+			auth->ah_cred = au->au_origcred;
+		}
+		marshal_new_auth(auth);
+	}
+	return (TRUE);
+}
+
+static bool_t
+authunix_refresh(auth)
+	register AUTH *auth;
+{
+	register struct audata *au = AUTH_PRIVATE(auth);
+	struct authunix_parms aup;
+	struct timeval now;
+	XDR xdrs;
+	register int stat;
+
+	if (auth->ah_cred.oa_base == au->au_origcred.oa_base) {
+		/* there is no hope.  Punt */
+		return (FALSE);
+	}
+	au->au_shfaults ++;
+
+	/* first deserialize the creds back into a struct authunix_parms */
+	aup.aup_machname = NULL;
+	aup.aup_gids = (int *)NULL;
+	xdrmem_create(&xdrs, au->au_origcred.oa_base,
+	    au->au_origcred.oa_length, XDR_DECODE);
+	stat = xdr_authunix_parms(&xdrs, &aup);
+	if (! stat)
+		goto done;
+
+	/* update the time and serialize in place */
+	(void)gettimeofday(&now, (struct timezone *)0);
+	aup.aup_time = now.tv_sec;
+	xdrs.x_op = XDR_ENCODE;
+	XDR_SETPOS(&xdrs, 0);
+	stat = xdr_authunix_parms(&xdrs, &aup);
+	if (! stat)
+		goto done;
+	auth->ah_cred = au->au_origcred;
+	marshal_new_auth(auth);
+done:
+	/* free the struct authunix_parms created by deserializing */
+	xdrs.x_op = XDR_FREE;
+	(void)xdr_authunix_parms(&xdrs, &aup);
+	XDR_DESTROY(&xdrs);
+	return (stat);
+}
+
+static void
+authunix_destroy(auth)
+	register AUTH *auth;
+{
+	register struct audata *au = AUTH_PRIVATE(auth);
+
+	mem_free(au->au_origcred.oa_base, au->au_origcred.oa_length);
+
+	if (au->au_shcred.oa_base != NULL)
+		mem_free(au->au_shcred.oa_base, au->au_shcred.oa_length);
+
+	mem_free(auth->ah_private, sizeof(struct audata));
+
+	if (auth->ah_verf.oa_base != NULL)
+		mem_free(auth->ah_verf.oa_base, auth->ah_verf.oa_length);
+
+	mem_free((caddr_t)auth, sizeof(*auth));
+}
+
+/*
+ * Marshals (pre-serializes) an auth struct.
+ * sets private data, au_marshed and au_mpos
+ */
+static void
+marshal_new_auth(auth)
+	register AUTH *auth;
+{
+	XDR		xdr_stream;
+	register XDR	*xdrs = &xdr_stream;
+	register struct audata *au = AUTH_PRIVATE(auth);
+
+	xdrmem_create(xdrs, au->au_marshed, MAX_AUTH_BYTES, XDR_ENCODE);
+	if ((! xdr_opaque_auth(xdrs, &(auth->ah_cred))) ||
+	    (! xdr_opaque_auth(xdrs, &(auth->ah_verf)))) {
+		perror("auth_none.c - Fatal marshalling problem");
+	} else {
+		au->au_mpos = XDR_GETPOS(xdrs);
+	}
+	XDR_DESTROY(xdrs);
+}
diff --git a/lib/libc/rpc/authunix_prot.c b/lib/libc/rpc/authunix_prot.c
new file mode 100644
index 0000000..5a8c2a4
--- /dev/null
+++ b/lib/libc/rpc/authunix_prot.c
@@ -0,0 +1,68 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)authunix_prot.c 1.15 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)authunix_prot.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: authunix_prot.c,v 1.1 1994/08/07 18:35:40 wollman Exp $";
+#endif
+
+/*
+ * authunix_prot.c
+ * XDR for UNIX style authentication parameters for RPC
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+
+#include <rpc/types.h>
+#include <rpc/xdr.h>
+#include <rpc/auth.h>
+#include <rpc/auth_unix.h>
+
+/*
+ * XDR for unix authentication parameters.
+ */
+bool_t
+xdr_authunix_parms(xdrs, p)
+	register XDR *xdrs;
+	register struct authunix_parms *p;
+{
+
+	if (xdr_u_long(xdrs, &(p->aup_time))
+	    && xdr_string(xdrs, &(p->aup_machname), MAX_MACHINE_NAME)
+	    && xdr_int(xdrs, &(p->aup_uid))
+	    && xdr_int(xdrs, &(p->aup_gid))
+	    && xdr_array(xdrs, (caddr_t *)&(p->aup_gids),
+		    &(p->aup_len), NGRPS, sizeof(int), xdr_int) ) {
+		return (TRUE);
+	}
+	return (FALSE);
+}
+
diff --git a/lib/libc/rpc/bindresvport.3 b/lib/libc/rpc/bindresvport.3
new file mode 100644
index 0000000..1fb1f9a
--- /dev/null
+++ b/lib/libc/rpc/bindresvport.3
@@ -0,0 +1,27 @@
+.\" @(#)bindresvport.3n	2.2 88/08/02 4.0 RPCSRC; from 1.7 88/03/14 SMI
+.TH BINDRESVPORT 3N  "22 november 1987"
+.SH NAME
+bindresvport \- bind a socket to a privileged IP port
+.SH SYNOPSIS
+.nf
+.B #include <sys/types.h>
+.B #include <netinet/in.h>
+.LP
+.B int bindresvport(sd, sin)
+.B int sd;
+.B struct sockaddr_in \(**sin;
+.fi
+.SH DESCRIPTION
+.LP
+.B bindresvport(\|)
+is used to bind a socket descriptor to a privileged
+.SM IP
+port, that is, a
+port number in the range 0-1023.
+The routine returns 0 if it is successful,
+otherwise \-1 is returned and
+.B errno
+set to reflect the cause of the error.
+.LP
+Only root can bind to a privileged port; this call will fail for any
+other users.
diff --git a/lib/libc/rpc/bindresvport.c b/lib/libc/rpc/bindresvport.c
new file mode 100644
index 0000000..c7f93b2
--- /dev/null
+++ b/lib/libc/rpc/bindresvport.c
@@ -0,0 +1,86 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)bindresvport.c 1.8 88/02/08 SMI";*/
+/*static char *sccsid = "from: @(#)bindresvport.c	2.2 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: bindresvport.c,v 1.2 1995/05/30 05:41:13 rgrimes Exp $";
+#endif
+
+/*
+ * Copyright (c) 1987 by Sun Microsystems, Inc.
+ */
+
+#include <sys/types.h>
+#include <sys/errno.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <unistd.h>
+#include <string.h>
+
+/*
+ * Bind a socket to a privileged IP port
+ */
+bindresvport(sd, sin)
+	int sd;
+	struct sockaddr_in *sin;
+{
+	int res;
+	static short port;
+	struct sockaddr_in myaddr;
+	extern int errno;
+	int i;
+
+#define STARTPORT 600
+#define ENDPORT (IPPORT_RESERVED - 1)
+#define NPORTS	(ENDPORT - STARTPORT + 1)
+
+	if (sin == (struct sockaddr_in *)0) {
+		sin = &myaddr;
+		bzero(sin, sizeof (*sin));
+		sin->sin_family = AF_INET;
+	} else if (sin->sin_family != AF_INET) {
+		errno = EPFNOSUPPORT;
+		return (-1);
+	}
+	if (port == 0) {
+		port = (getpid() % NPORTS) + STARTPORT;
+	}
+	res = -1;
+	errno = EADDRINUSE;
+	for (i = 0; i < NPORTS && res < 0 && errno == EADDRINUSE; i++) {
+		sin->sin_port = htons(port++);
+		if (port > ENDPORT) {
+			port = STARTPORT;
+		}
+		res = bind(sd,
+		    (struct sockaddr *)sin, sizeof(struct sockaddr_in));
+	}
+	return (res);
+}
diff --git a/lib/libc/rpc/clnt_generic.c b/lib/libc/rpc/clnt_generic.c
new file mode 100644
index 0000000..a529336
--- /dev/null
+++ b/lib/libc/rpc/clnt_generic.c
@@ -0,0 +1,114 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)clnt_generic.c 1.4 87/08/11 (C) 1987 SMI";*/
+/*static char *sccsid = "from: @(#)clnt_generic.c	2.2 88/08/01 4.0 RPCSRC";*/
+static char *rcsid = "$Id: clnt_generic.c,v 1.2 1995/05/30 05:41:14 rgrimes Exp $";
+#endif
+
+/*
+ * Copyright (C) 1987, Sun Microsystems, Inc.
+ */
+#include <rpc/rpc.h>
+#include <sys/socket.h>
+#include <sys/errno.h>
+#include <netdb.h>
+#include <string.h>
+
+/*
+ * Generic client creation: takes (hostname, program-number, protocol) and
+ * returns client handle. Default options are set, which the user can
+ * change using the rpc equivalent of ioctl()'s.
+ */
+CLIENT *
+clnt_create(hostname, prog, vers, proto)
+	char *hostname;
+	u_long prog;
+	u_long vers;
+	char *proto;
+{
+	struct hostent *h;
+	struct protoent *p;
+	struct sockaddr_in sin;
+	int sock;
+	struct timeval tv;
+	CLIENT *client;
+
+	h = gethostbyname(hostname);
+	if (h == NULL) {
+		rpc_createerr.cf_stat = RPC_UNKNOWNHOST;
+		return (NULL);
+	}
+	if (h->h_addrtype != AF_INET) {
+		/*
+		 * Only support INET for now
+		 */
+		rpc_createerr.cf_stat = RPC_SYSTEMERROR;
+		rpc_createerr.cf_error.re_errno = EAFNOSUPPORT;
+		return (NULL);
+	}
+	sin.sin_family = h->h_addrtype;
+	sin.sin_port = 0;
+	bzero(sin.sin_zero, sizeof(sin.sin_zero));
+	bcopy(h->h_addr, (char*)&sin.sin_addr, h->h_length);
+	p = getprotobyname(proto);
+	if (p == NULL) {
+		rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
+		rpc_createerr.cf_error.re_errno = EPFNOSUPPORT;
+		return (NULL);
+	}
+	sock = RPC_ANYSOCK;
+	switch (p->p_proto) {
+	case IPPROTO_UDP:
+		tv.tv_sec = 5;
+		tv.tv_usec = 0;
+		client = clntudp_create(&sin, prog, vers, tv, &sock);
+		if (client == NULL) {
+			return (NULL);
+		}
+		tv.tv_sec = 25;
+		clnt_control(client, CLSET_TIMEOUT, &tv);
+		break;
+	case IPPROTO_TCP:
+		client = clnttcp_create(&sin, prog, vers, &sock, 0, 0);
+		if (client == NULL) {
+			return (NULL);
+		}
+		tv.tv_sec = 25;
+		tv.tv_usec = 0;
+		clnt_control(client, CLSET_TIMEOUT, &tv);
+		break;
+	default:
+		rpc_createerr.cf_stat = RPC_SYSTEMERROR;
+		rpc_createerr.cf_error.re_errno = EPFNOSUPPORT;
+		return (NULL);
+	}
+	return (client);
+}
diff --git a/lib/libc/rpc/clnt_perror.c b/lib/libc/rpc/clnt_perror.c
new file mode 100644
index 0000000..a6ee70b
--- /dev/null
+++ b/lib/libc/rpc/clnt_perror.c
@@ -0,0 +1,304 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)clnt_perror.c 1.15 87/10/07 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)clnt_perror.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: clnt_perror.c,v 1.3 1995/10/22 14:51:14 phk Exp $";
+#endif
+
+/*
+ * clnt_perror.c
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ *
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <rpc/rpc.h>
+#include <rpc/types.h>
+#include <rpc/auth.h>
+#include <rpc/clnt.h>
+
+static char *auth_errmsg();
+
+static char *buf;
+
+static char *
+_buf()
+{
+
+	if (buf == 0)
+		buf = (char *)malloc(256);
+	return (buf);
+}
+
+/*
+ * Print reply error info
+ */
+char *
+clnt_sperror(rpch, s)
+	CLIENT *rpch;
+	char *s;
+{
+	struct rpc_err e;
+	void clnt_perrno();
+	char *err;
+	char *str = _buf();
+	char *strstart = str;
+
+	if (str == 0)
+		return (0);
+	CLNT_GETERR(rpch, &e);
+
+	(void) sprintf(str, "%s: ", s);
+	str += strlen(str);
+
+	(void) strcpy(str, clnt_sperrno(e.re_status));
+	str += strlen(str);
+
+	switch (e.re_status) {
+	case RPC_SUCCESS:
+	case RPC_CANTENCODEARGS:
+	case RPC_CANTDECODERES:
+	case RPC_TIMEDOUT:
+	case RPC_PROGUNAVAIL:
+	case RPC_PROCUNAVAIL:
+	case RPC_CANTDECODEARGS:
+	case RPC_SYSTEMERROR:
+	case RPC_UNKNOWNHOST:
+	case RPC_UNKNOWNPROTO:
+	case RPC_PMAPFAILURE:
+	case RPC_PROGNOTREGISTERED:
+	case RPC_FAILED:
+		break;
+
+	case RPC_CANTSEND:
+	case RPC_CANTRECV:
+		(void) sprintf(str, "; errno = %s",
+		    strerror(e.re_errno));
+		str += strlen(str);
+		break;
+
+	case RPC_VERSMISMATCH:
+		(void) sprintf(str,
+			"; low version = %lu, high version = %lu",
+			e.re_vers.low, e.re_vers.high);
+		str += strlen(str);
+		break;
+
+	case RPC_AUTHERROR:
+		err = auth_errmsg(e.re_why);
+		(void) sprintf(str,"; why = ");
+		str += strlen(str);
+		if (err != NULL) {
+			(void) sprintf(str, "%s",err);
+		} else {
+			(void) sprintf(str,
+				"(unknown authentication error - %d)",
+				(int) e.re_why);
+		}
+		str += strlen(str);
+		break;
+
+	case RPC_PROGVERSMISMATCH:
+		(void) sprintf(str,
+			"; low version = %lu, high version = %lu",
+			e.re_vers.low, e.re_vers.high);
+		str += strlen(str);
+		break;
+
+	default:	/* unknown */
+		(void) sprintf(str,
+			"; s1 = %lu, s2 = %lu",
+			e.re_lb.s1, e.re_lb.s2);
+		str += strlen(str);
+		break;
+	}
+	(void) sprintf(str, "\n");
+	return(strstart) ;
+}
+
+void
+clnt_perror(rpch, s)
+	CLIENT *rpch;
+	char *s;
+{
+	(void) fprintf(stderr,"%s\n",clnt_sperror(rpch,s));
+}
+
+
+struct rpc_errtab {
+	enum clnt_stat status;
+	char *message;
+};
+
+static struct rpc_errtab  rpc_errlist[] = {
+	{ RPC_SUCCESS,
+		"RPC: Success" },
+	{ RPC_CANTENCODEARGS,
+		"RPC: Can't encode arguments" },
+	{ RPC_CANTDECODERES,
+		"RPC: Can't decode result" },
+	{ RPC_CANTSEND,
+		"RPC: Unable to send" },
+	{ RPC_CANTRECV,
+		"RPC: Unable to receive" },
+	{ RPC_TIMEDOUT,
+		"RPC: Timed out" },
+	{ RPC_VERSMISMATCH,
+		"RPC: Incompatible versions of RPC" },
+	{ RPC_AUTHERROR,
+		"RPC: Authentication error" },
+	{ RPC_PROGUNAVAIL,
+		"RPC: Program unavailable" },
+	{ RPC_PROGVERSMISMATCH,
+		"RPC: Program/version mismatch" },
+	{ RPC_PROCUNAVAIL,
+		"RPC: Procedure unavailable" },
+	{ RPC_CANTDECODEARGS,
+		"RPC: Server can't decode arguments" },
+	{ RPC_SYSTEMERROR,
+		"RPC: Remote system error" },
+	{ RPC_UNKNOWNHOST,
+		"RPC: Unknown host" },
+	{ RPC_UNKNOWNPROTO,
+		"RPC: Unknown protocol" },
+	{ RPC_PMAPFAILURE,
+		"RPC: Port mapper failure" },
+	{ RPC_PROGNOTREGISTERED,
+		"RPC: Program not registered"},
+	{ RPC_FAILED,
+		"RPC: Failed (unspecified error)"}
+};
+
+
+/*
+ * This interface for use by clntrpc
+ */
+char *
+clnt_sperrno(stat)
+	enum clnt_stat stat;
+{
+	int i;
+
+	for (i = 0; i < sizeof(rpc_errlist)/sizeof(struct rpc_errtab); i++) {
+		if (rpc_errlist[i].status == stat) {
+			return (rpc_errlist[i].message);
+		}
+	}
+	return ("RPC: (unknown error code)");
+}
+
+void
+clnt_perrno(num)
+	enum clnt_stat num;
+{
+	(void) fprintf(stderr,"%s\n",clnt_sperrno(num));
+}
+
+
+char *
+clnt_spcreateerror(s)
+	char *s;
+{
+	extern int sys_nerr;
+	char *str = _buf();
+
+	if (str == 0)
+		return(0);
+	(void) sprintf(str, "%s: ", s);
+	(void) strcat(str, clnt_sperrno(rpc_createerr.cf_stat));
+	switch (rpc_createerr.cf_stat) {
+	case RPC_PMAPFAILURE:
+		(void) strcat(str, " - ");
+		(void) strcat(str,
+		    clnt_sperrno(rpc_createerr.cf_error.re_status));
+		break;
+
+	case RPC_SYSTEMERROR:
+		(void) strcat(str, " - ");
+		if (rpc_createerr.cf_error.re_errno > 0
+		    && rpc_createerr.cf_error.re_errno < sys_nerr)
+			(void) strcat(str,
+			    strerror(rpc_createerr.cf_error.re_errno));
+		else
+			(void) sprintf(&str[strlen(str)], "Error %d",
+			    rpc_createerr.cf_error.re_errno);
+		break;
+	}
+	(void) strcat(str, "\n");
+	return (str);
+}
+
+void
+clnt_pcreateerror(s)
+	char *s;
+{
+	(void) fprintf(stderr,"%s\n",clnt_spcreateerror(s));
+}
+
+struct auth_errtab {
+	enum auth_stat status;
+	char *message;
+};
+
+static struct auth_errtab auth_errlist[] = {
+	{ AUTH_OK,
+		"Authentication OK" },
+	{ AUTH_BADCRED,
+		"Invalid client credential" },
+	{ AUTH_REJECTEDCRED,
+		"Server rejected credential" },
+	{ AUTH_BADVERF,
+		"Invalid client verifier" },
+	{ AUTH_REJECTEDVERF,
+		"Server rejected verifier" },
+	{ AUTH_TOOWEAK,
+		"Client credential too weak" },
+	{ AUTH_INVALIDRESP,
+		"Invalid server verifier" },
+	{ AUTH_FAILED,
+		"Failed (unspecified error)" },
+};
+
+static char *
+auth_errmsg(stat)
+	enum auth_stat stat;
+{
+	int i;
+
+	for (i = 0; i < sizeof(auth_errlist)/sizeof(struct auth_errtab); i++) {
+		if (auth_errlist[i].status == stat) {
+			return(auth_errlist[i].message);
+		}
+	}
+	return(NULL);
+}
diff --git a/lib/libc/rpc/clnt_raw.c b/lib/libc/rpc/clnt_raw.c
new file mode 100644
index 0000000..b52e658
--- /dev/null
+++ b/lib/libc/rpc/clnt_raw.c
@@ -0,0 +1,241 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)clnt_raw.c 1.22 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)clnt_raw.c	2.2 88/08/01 4.0 RPCSRC";*/
+static char *rcsid = "$Id: clnt_raw.c,v 1.3 1995/10/22 14:51:16 phk Exp $";
+#endif
+
+/*
+ * clnt_raw.c
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ *
+ * Memory based rpc for simple testing and timing.
+ * Interface to create an rpc client and server in the same process.
+ * This lets us similate rpc and get round trip overhead, without
+ * any interference from the kernal.
+ */
+
+#include <rpc/rpc.h>
+#include <stdlib.h>
+
+#define MCALL_MSG_SIZE 24
+
+/*
+ * This is the "network" we will be moving stuff over.
+ */
+static struct clntraw_private {
+	CLIENT	client_object;
+	XDR	xdr_stream;
+	char	_raw_buf[UDPMSGSIZE];
+	char	mashl_callmsg[MCALL_MSG_SIZE];
+	u_int	mcnt;
+} *clntraw_private;
+
+static enum clnt_stat	clntraw_call();
+static void		clntraw_abort();
+static void		clntraw_geterr();
+static bool_t		clntraw_freeres();
+static bool_t		clntraw_control();
+static void		clntraw_destroy();
+
+static struct clnt_ops client_ops = {
+	clntraw_call,
+	clntraw_abort,
+	clntraw_geterr,
+	clntraw_freeres,
+	clntraw_destroy,
+	clntraw_control
+};
+
+void	svc_getreq();
+
+/*
+ * Create a client handle for memory based rpc.
+ */
+CLIENT *
+clntraw_create(prog, vers)
+	u_long prog;
+	u_long vers;
+{
+	register struct clntraw_private *clp = clntraw_private;
+	struct rpc_msg call_msg;
+	XDR *xdrs = &clp->xdr_stream;
+	CLIENT	*client = &clp->client_object;
+
+	if (clp == 0) {
+		clp = (struct clntraw_private *)calloc(1, sizeof (*clp));
+		if (clp == 0)
+			return (0);
+		clntraw_private = clp;
+	}
+	/*
+	 * pre-serialize the static part of the call msg and stash it away
+	 */
+	call_msg.rm_direction = CALL;
+	call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
+	call_msg.rm_call.cb_prog = prog;
+	call_msg.rm_call.cb_vers = vers;
+	xdrmem_create(xdrs, clp->mashl_callmsg, MCALL_MSG_SIZE, XDR_ENCODE);
+	if (! xdr_callhdr(xdrs, &call_msg)) {
+		perror("clnt_raw.c - Fatal header serialization error.");
+	}
+	clp->mcnt = XDR_GETPOS(xdrs);
+	XDR_DESTROY(xdrs);
+
+	/*
+	 * Set xdrmem for client/server shared buffer
+	 */
+	xdrmem_create(xdrs, clp->_raw_buf, UDPMSGSIZE, XDR_FREE);
+
+	/*
+	 * create client handle
+	 */
+	client->cl_ops = &client_ops;
+	client->cl_auth = authnone_create();
+	return (client);
+}
+
+static enum clnt_stat
+clntraw_call(h, proc, xargs, argsp, xresults, resultsp, timeout)
+	CLIENT *h;
+	u_long proc;
+	xdrproc_t xargs;
+	caddr_t argsp;
+	xdrproc_t xresults;
+	caddr_t resultsp;
+	struct timeval timeout;
+{
+	register struct clntraw_private *clp = clntraw_private;
+	register XDR *xdrs = &clp->xdr_stream;
+	struct rpc_msg msg;
+	enum clnt_stat status;
+	struct rpc_err error;
+
+	if (clp == 0)
+		return (RPC_FAILED);
+call_again:
+	/*
+	 * send request
+	 */
+	xdrs->x_op = XDR_ENCODE;
+	XDR_SETPOS(xdrs, 0);
+	((struct rpc_msg *)clp->mashl_callmsg)->rm_xid ++ ;
+	if ((! XDR_PUTBYTES(xdrs, clp->mashl_callmsg, clp->mcnt)) ||
+	    (! XDR_PUTLONG(xdrs, (long *)&proc)) ||
+	    (! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
+	    (! (*xargs)(xdrs, argsp))) {
+		return (RPC_CANTENCODEARGS);
+	}
+	(void)XDR_GETPOS(xdrs);  /* called just to cause overhead */
+
+	/*
+	 * We have to call server input routine here because this is
+	 * all going on in one process. Yuk.
+	 */
+	svc_getreq(1);
+
+	/*
+	 * get results
+	 */
+	xdrs->x_op = XDR_DECODE;
+	XDR_SETPOS(xdrs, 0);
+	msg.acpted_rply.ar_verf = _null_auth;
+	msg.acpted_rply.ar_results.where = resultsp;
+	msg.acpted_rply.ar_results.proc = xresults;
+	if (! xdr_replymsg(xdrs, &msg))
+		return (RPC_CANTDECODERES);
+	_seterr_reply(&msg, &error);
+	status = error.re_status;
+
+	if (status == RPC_SUCCESS) {
+		if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
+			status = RPC_AUTHERROR;
+		}
+	}  /* end successful completion */
+	else {
+		if (AUTH_REFRESH(h->cl_auth))
+			goto call_again;
+	}  /* end of unsuccessful completion */
+
+	if (status == RPC_SUCCESS) {
+		if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
+			status = RPC_AUTHERROR;
+		}
+		if (msg.acpted_rply.ar_verf.oa_base != NULL) {
+			xdrs->x_op = XDR_FREE;
+			(void)xdr_opaque_auth(xdrs, &(msg.acpted_rply.ar_verf));
+		}
+	}
+
+	return (status);
+}
+
+static void
+clntraw_geterr()
+{
+}
+
+
+static bool_t
+clntraw_freeres(cl, xdr_res, res_ptr)
+	CLIENT *cl;
+	xdrproc_t xdr_res;
+	caddr_t res_ptr;
+{
+	register struct clntraw_private *clp = clntraw_private;
+	register XDR *xdrs = &clp->xdr_stream;
+	bool_t rval;
+
+	if (clp == 0)
+	{
+		rval = (bool_t) RPC_FAILED;
+		return (rval);
+	}
+	xdrs->x_op = XDR_FREE;
+	return ((*xdr_res)(xdrs, res_ptr));
+}
+
+static void
+clntraw_abort()
+{
+}
+
+static bool_t
+clntraw_control()
+{
+	return (FALSE);
+}
+
+static void
+clntraw_destroy()
+{
+}
diff --git a/lib/libc/rpc/clnt_simple.c b/lib/libc/rpc/clnt_simple.c
new file mode 100644
index 0000000..2678287
--- /dev/null
+++ b/lib/libc/rpc/clnt_simple.c
@@ -0,0 +1,116 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)clnt_simple.c 1.35 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)clnt_simple.c	2.2 88/08/01 4.0 RPCSRC";*/
+static char *rcsid = "$Id: clnt_simple.c,v 1.2 1995/05/30 05:41:17 rgrimes Exp $";
+#endif
+
+/*
+ * clnt_simple.c
+ * Simplified front end to rpc.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <rpc/rpc.h>
+#include <sys/socket.h>
+#include <netdb.h>
+
+static struct callrpc_private {
+	CLIENT	*client;
+	int	socket;
+	int	oldprognum, oldversnum, valid;
+	char	*oldhost;
+} *callrpc_private;
+
+callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out)
+	char *host;
+	xdrproc_t inproc, outproc;
+	char *in, *out;
+{
+	register struct callrpc_private *crp = callrpc_private;
+	struct sockaddr_in server_addr;
+	enum clnt_stat clnt_stat;
+	struct hostent *hp;
+	struct timeval timeout, tottimeout;
+
+	if (crp == 0) {
+		crp = (struct callrpc_private *)calloc(1, sizeof (*crp));
+		if (crp == 0)
+			return (0);
+		callrpc_private = crp;
+	}
+	if (crp->oldhost == NULL) {
+		crp->oldhost = malloc(256);
+		crp->oldhost[0] = 0;
+		crp->socket = RPC_ANYSOCK;
+	}
+	if (crp->valid && crp->oldprognum == prognum && crp->oldversnum == versnum
+		&& strcmp(crp->oldhost, host) == 0) {
+		/* reuse old client */
+	} else {
+		crp->valid = 0;
+		(void)close(crp->socket);
+		crp->socket = RPC_ANYSOCK;
+		if (crp->client) {
+			clnt_destroy(crp->client);
+			crp->client = NULL;
+		}
+		if ((hp = gethostbyname(host)) == NULL)
+			return ((int) RPC_UNKNOWNHOST);
+		timeout.tv_usec = 0;
+		timeout.tv_sec = 5;
+		bcopy(hp->h_addr, (char *)&server_addr.sin_addr, hp->h_length);
+		server_addr.sin_family = AF_INET;
+		server_addr.sin_port =  0;
+		if ((crp->client = clntudp_create(&server_addr, (u_long)prognum,
+		    (u_long)versnum, timeout, &crp->socket)) == NULL)
+			return ((int) rpc_createerr.cf_stat);
+		crp->valid = 1;
+		crp->oldprognum = prognum;
+		crp->oldversnum = versnum;
+		(void) strcpy(crp->oldhost, host);
+	}
+	tottimeout.tv_sec = 25;
+	tottimeout.tv_usec = 0;
+	clnt_stat = clnt_call(crp->client, procnum, inproc, in,
+	    outproc, out, tottimeout);
+	/*
+	 * if call failed, empty cache
+	 */
+	if (clnt_stat != RPC_SUCCESS)
+		crp->valid = 0;
+	return ((int) clnt_stat);
+}
diff --git a/lib/libc/rpc/clnt_tcp.c b/lib/libc/rpc/clnt_tcp.c
new file mode 100644
index 0000000..ebe238d
--- /dev/null
+++ b/lib/libc/rpc/clnt_tcp.c
@@ -0,0 +1,471 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)clnt_tcp.c 1.37 87/10/05 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)clnt_tcp.c	2.2 88/08/01 4.0 RPCSRC";*/
+static char *rcsid = "$Id: clnt_tcp.c,v 1.4 1995/10/27 16:56:50 adam Exp $";
+#endif
+
+/*
+ * clnt_tcp.c, Implements a TCP/IP based, client side RPC.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ *
+ * TCP based RPC supports 'batched calls'.
+ * A sequence of calls may be batched-up in a send buffer.  The rpc call
+ * return immediately to the client even though the call was not necessarily
+ * sent.  The batching occurs if the results' xdr routine is NULL (0) AND
+ * the rpc timeout value is zero (see clnt.h, rpc).
+ *
+ * Clients should NOT casually batch calls that in fact return results; that is,
+ * the server side should be aware that a call is batched and not produce any
+ * return message.  Batched calls that produce many result messages can
+ * deadlock (netlock) the client and the server....
+ *
+ * Now go hang yourself.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <rpc/rpc.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <errno.h>
+#include <rpc/pmap_clnt.h>
+
+#define MCALL_MSG_SIZE 24
+
+extern int errno;
+
+static int	readtcp();
+static int	writetcp();
+
+static enum clnt_stat	clnttcp_call();
+static void		clnttcp_abort();
+static void		clnttcp_geterr();
+static bool_t		clnttcp_freeres();
+static bool_t           clnttcp_control();
+static void		clnttcp_destroy();
+
+static struct clnt_ops tcp_ops = {
+	clnttcp_call,
+	clnttcp_abort,
+	clnttcp_geterr,
+	clnttcp_freeres,
+	clnttcp_destroy,
+	clnttcp_control
+};
+
+struct ct_data {
+	int		ct_sock;
+	bool_t		ct_closeit;
+	struct timeval	ct_wait;
+	bool_t          ct_waitset;       /* wait set by clnt_control? */
+	struct sockaddr_in ct_addr;
+	struct rpc_err	ct_error;
+	char		ct_mcall[MCALL_MSG_SIZE];	/* marshalled callmsg */
+	u_int		ct_mpos;			/* pos after marshal */
+	XDR		ct_xdrs;
+};
+
+/*
+ * Create a client handle for a tcp/ip connection.
+ * If *sockp<0, *sockp is set to a newly created TCP socket and it is
+ * connected to raddr.  If *sockp non-negative then
+ * raddr is ignored.  The rpc/tcp package does buffering
+ * similar to stdio, so the client must pick send and receive buffer sizes,];
+ * 0 => use the default.
+ * If raddr->sin_port is 0, then a binder on the remote machine is
+ * consulted for the right port number.
+ * NB: *sockp is copied into a private area.
+ * NB: It is the clients responsibility to close *sockp.
+ * NB: The rpch->cl_auth is set null authentication.  Caller may wish to set this
+ * something more useful.
+ */
+CLIENT *
+clnttcp_create(raddr, prog, vers, sockp, sendsz, recvsz)
+	struct sockaddr_in *raddr;
+	u_long prog;
+	u_long vers;
+	register int *sockp;
+	u_int sendsz;
+	u_int recvsz;
+{
+	CLIENT *h;
+	register struct ct_data *ct;
+	struct timeval now;
+	struct rpc_msg call_msg;
+
+	h  = (CLIENT *)mem_alloc(sizeof(*h));
+	if (h == NULL) {
+		(void)fprintf(stderr, "clnttcp_create: out of memory\n");
+		rpc_createerr.cf_stat = RPC_SYSTEMERROR;
+		rpc_createerr.cf_error.re_errno = errno;
+		goto fooy;
+	}
+	ct = (struct ct_data *)mem_alloc(sizeof(*ct));
+	if (ct == NULL) {
+		(void)fprintf(stderr, "clnttcp_create: out of memory\n");
+		rpc_createerr.cf_stat = RPC_SYSTEMERROR;
+		rpc_createerr.cf_error.re_errno = errno;
+		goto fooy;
+	}
+
+	/*
+	 * If no port number given ask the pmap for one
+	 */
+	if (raddr->sin_port == 0) {
+		u_short port;
+		if ((port = pmap_getport(raddr, prog, vers, IPPROTO_TCP)) == 0) {
+			mem_free((caddr_t)ct, sizeof(struct ct_data));
+			mem_free((caddr_t)h, sizeof(CLIENT));
+			return ((CLIENT *)NULL);
+		}
+		raddr->sin_port = htons(port);
+	}
+
+	/*
+	 * If no socket given, open one
+	 */
+	if (*sockp < 0) {
+		*sockp = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+		(void)bindresvport(*sockp, (struct sockaddr_in *)0);
+		if ((*sockp < 0)
+		    || (connect(*sockp, (struct sockaddr *)raddr,
+		    sizeof(*raddr)) < 0)) {
+			rpc_createerr.cf_stat = RPC_SYSTEMERROR;
+			rpc_createerr.cf_error.re_errno = errno;
+			(void)close(*sockp);
+			goto fooy;
+		}
+		ct->ct_closeit = TRUE;
+	} else {
+		ct->ct_closeit = FALSE;
+	}
+
+	/*
+	 * Set up private data struct
+	 */
+	ct->ct_sock = *sockp;
+	ct->ct_wait.tv_usec = 0;
+	ct->ct_waitset = FALSE;
+	ct->ct_addr = *raddr;
+
+	/*
+	 * Initialize call message
+	 */
+	(void)gettimeofday(&now, (struct timezone *)0);
+	call_msg.rm_xid = getpid() ^ now.tv_sec ^ now.tv_usec;
+	call_msg.rm_direction = CALL;
+	call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
+	call_msg.rm_call.cb_prog = prog;
+	call_msg.rm_call.cb_vers = vers;
+
+	/*
+	 * pre-serialize the static part of the call msg and stash it away
+	 */
+	xdrmem_create(&(ct->ct_xdrs), ct->ct_mcall, MCALL_MSG_SIZE,
+	    XDR_ENCODE);
+	if (! xdr_callhdr(&(ct->ct_xdrs), &call_msg)) {
+		if (ct->ct_closeit) {
+			(void)close(*sockp);
+		}
+		goto fooy;
+	}
+	ct->ct_mpos = XDR_GETPOS(&(ct->ct_xdrs));
+	XDR_DESTROY(&(ct->ct_xdrs));
+
+	/*
+	 * Create a client handle which uses xdrrec for serialization
+	 * and authnone for authentication.
+	 */
+	xdrrec_create(&(ct->ct_xdrs), sendsz, recvsz,
+	    (caddr_t)ct, readtcp, writetcp);
+	h->cl_ops = &tcp_ops;
+	h->cl_private = (caddr_t) ct;
+	h->cl_auth = authnone_create();
+	return (h);
+
+fooy:
+	/*
+	 * Something goofed, free stuff and barf
+	 */
+	mem_free((caddr_t)ct, sizeof(struct ct_data));
+	mem_free((caddr_t)h, sizeof(CLIENT));
+	return ((CLIENT *)NULL);
+}
+
+static enum clnt_stat
+clnttcp_call(h, proc, xdr_args, args_ptr, xdr_results, results_ptr, timeout)
+	register CLIENT *h;
+	u_long proc;
+	xdrproc_t xdr_args;
+	caddr_t args_ptr;
+	xdrproc_t xdr_results;
+	caddr_t results_ptr;
+	struct timeval timeout;
+{
+	register struct ct_data *ct = (struct ct_data *) h->cl_private;
+	register XDR *xdrs = &(ct->ct_xdrs);
+	struct rpc_msg reply_msg;
+	u_long x_id;
+	u_long *msg_x_id = (u_long *)(ct->ct_mcall);	/* yuk */
+	register bool_t shipnow;
+	int refreshes = 2;
+
+	if (!ct->ct_waitset) {
+		ct->ct_wait = timeout;
+	}
+
+	shipnow =
+	    (xdr_results == (xdrproc_t)0 && timeout.tv_sec == 0
+	    && timeout.tv_usec == 0) ? FALSE : TRUE;
+
+call_again:
+	xdrs->x_op = XDR_ENCODE;
+	ct->ct_error.re_status = RPC_SUCCESS;
+	x_id = ntohl(--(*msg_x_id));
+	if ((! XDR_PUTBYTES(xdrs, ct->ct_mcall, ct->ct_mpos)) ||
+	    (! XDR_PUTLONG(xdrs, (long *)&proc)) ||
+	    (! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
+	    (! (*xdr_args)(xdrs, args_ptr))) {
+		if (ct->ct_error.re_status == RPC_SUCCESS)
+			ct->ct_error.re_status = RPC_CANTENCODEARGS;
+		(void)xdrrec_endofrecord(xdrs, TRUE);
+		return (ct->ct_error.re_status);
+	}
+	if (! xdrrec_endofrecord(xdrs, shipnow))
+		return (ct->ct_error.re_status = RPC_CANTSEND);
+	if (! shipnow)
+		return (RPC_SUCCESS);
+	/*
+	 * Hack to provide rpc-based message passing
+	 */
+	if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
+		return(ct->ct_error.re_status = RPC_TIMEDOUT);
+	}
+
+
+	/*
+	 * Keep receiving until we get a valid transaction id
+	 */
+	xdrs->x_op = XDR_DECODE;
+	while (TRUE) {
+		reply_msg.acpted_rply.ar_verf = _null_auth;
+		reply_msg.acpted_rply.ar_results.where = NULL;
+		reply_msg.acpted_rply.ar_results.proc = xdr_void;
+		if (! xdrrec_skiprecord(xdrs))
+			return (ct->ct_error.re_status);
+		/* now decode and validate the response header */
+		if (! xdr_replymsg(xdrs, &reply_msg)) {
+			if (ct->ct_error.re_status == RPC_SUCCESS)
+				continue;
+			return (ct->ct_error.re_status);
+		}
+		if (reply_msg.rm_xid == x_id)
+			break;
+	}
+
+	/*
+	 * process header
+	 */
+	_seterr_reply(&reply_msg, &(ct->ct_error));
+	if (ct->ct_error.re_status == RPC_SUCCESS) {
+		if (! AUTH_VALIDATE(h->cl_auth, &reply_msg.acpted_rply.ar_verf)) {
+			ct->ct_error.re_status = RPC_AUTHERROR;
+			ct->ct_error.re_why = AUTH_INVALIDRESP;
+		} else if (! (*xdr_results)(xdrs, results_ptr)) {
+			if (ct->ct_error.re_status == RPC_SUCCESS)
+				ct->ct_error.re_status = RPC_CANTDECODERES;
+		}
+		/* free verifier ... */
+		if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
+			xdrs->x_op = XDR_FREE;
+			(void)xdr_opaque_auth(xdrs, &(reply_msg.acpted_rply.ar_verf));
+		}
+	}  /* end successful completion */
+	else {
+		/* maybe our credentials need to be refreshed ... */
+		if (refreshes-- && AUTH_REFRESH(h->cl_auth))
+			goto call_again;
+	}  /* end of unsuccessful completion */
+	return (ct->ct_error.re_status);
+}
+
+static void
+clnttcp_geterr(h, errp)
+	CLIENT *h;
+	struct rpc_err *errp;
+{
+	register struct ct_data *ct =
+	    (struct ct_data *) h->cl_private;
+
+	*errp = ct->ct_error;
+}
+
+static bool_t
+clnttcp_freeres(cl, xdr_res, res_ptr)
+	CLIENT *cl;
+	xdrproc_t xdr_res;
+	caddr_t res_ptr;
+{
+	register struct ct_data *ct = (struct ct_data *)cl->cl_private;
+	register XDR *xdrs = &(ct->ct_xdrs);
+
+	xdrs->x_op = XDR_FREE;
+	return ((*xdr_res)(xdrs, res_ptr));
+}
+
+static void
+clnttcp_abort()
+{
+}
+
+static bool_t
+clnttcp_control(cl, request, info)
+	CLIENT *cl;
+	int request;
+	char *info;
+{
+	register struct ct_data *ct = (struct ct_data *)cl->cl_private;
+
+	switch (request) {
+	case CLSET_TIMEOUT:
+		ct->ct_wait = *(struct timeval *)info;
+		ct->ct_waitset = TRUE;
+		break;
+	case CLGET_TIMEOUT:
+		*(struct timeval *)info = ct->ct_wait;
+		break;
+	case CLGET_SERVER_ADDR:
+		*(struct sockaddr_in *)info = ct->ct_addr;
+		break;
+	default:
+		return (FALSE);
+	}
+	return (TRUE);
+}
+
+
+static void
+clnttcp_destroy(h)
+	CLIENT *h;
+{
+	register struct ct_data *ct =
+	    (struct ct_data *) h->cl_private;
+
+	if (ct->ct_closeit) {
+		(void)close(ct->ct_sock);
+	}
+	XDR_DESTROY(&(ct->ct_xdrs));
+	mem_free((caddr_t)ct, sizeof(struct ct_data));
+	mem_free((caddr_t)h, sizeof(CLIENT));
+}
+
+/*
+ * Interface between xdr serializer and tcp connection.
+ * Behaves like the system calls, read & write, but keeps some error state
+ * around for the rpc level.
+ */
+static int
+readtcp(ct, buf, len)
+	register struct ct_data *ct;
+	caddr_t buf;
+	register int len;
+{
+#ifdef FD_SETSIZE
+	fd_set mask;
+	fd_set readfds;
+
+	if (len == 0)
+		return (0);
+	FD_ZERO(&mask);
+	FD_SET(ct->ct_sock, &mask);
+#else
+	register int mask = 1 << (ct->ct_sock);
+	int readfds;
+
+	if (len == 0)
+		return (0);
+
+#endif /* def FD_SETSIZE */
+	while (TRUE) {
+		readfds = mask;
+		switch (select(_rpc_dtablesize(), &readfds, (fd_set *)NULL,
+			       (fd_set *)NULL, &(ct->ct_wait))) {
+		case 0:
+			ct->ct_error.re_status = RPC_TIMEDOUT;
+			return (-1);
+
+		case -1:
+			if (errno == EINTR)
+				continue;
+			ct->ct_error.re_status = RPC_CANTRECV;
+			ct->ct_error.re_errno = errno;
+			return (-1);
+		}
+		break;
+	}
+	switch (len = read(ct->ct_sock, buf, len)) {
+
+	case 0:
+		/* premature eof */
+		ct->ct_error.re_errno = ECONNRESET;
+		ct->ct_error.re_status = RPC_CANTRECV;
+		len = -1;  /* it's really an error */
+		break;
+
+	case -1:
+		ct->ct_error.re_errno = errno;
+		ct->ct_error.re_status = RPC_CANTRECV;
+		break;
+	}
+	return (len);
+}
+
+static int
+writetcp(ct, buf, len)
+	struct ct_data *ct;
+	caddr_t buf;
+	int len;
+{
+	register int i, cnt;
+
+	for (cnt = len; cnt > 0; cnt -= i, buf += i) {
+		if ((i = write(ct->ct_sock, buf, cnt)) == -1) {
+			ct->ct_error.re_errno = errno;
+			ct->ct_error.re_status = RPC_CANTSEND;
+			return (-1);
+		}
+	}
+	return (len);
+}
diff --git a/lib/libc/rpc/clnt_udp.c b/lib/libc/rpc/clnt_udp.c
new file mode 100644
index 0000000..d0da495
--- /dev/null
+++ b/lib/libc/rpc/clnt_udp.c
@@ -0,0 +1,447 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)clnt_udp.c 1.39 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)clnt_udp.c	2.2 88/08/01 4.0 RPCSRC";*/
+static char *rcsid = "$Id: clnt_udp.c,v 1.5 1995/10/22 14:51:21 phk Exp $";
+#endif
+
+/*
+ * clnt_udp.c, Implements a UDP/IP based, client side RPC.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <rpc/rpc.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <netdb.h>
+#include <errno.h>
+#include <rpc/pmap_clnt.h>
+
+extern int errno;
+
+/*
+ * UDP bases client side rpc operations
+ */
+static enum clnt_stat	clntudp_call();
+static void		clntudp_abort();
+static void		clntudp_geterr();
+static bool_t		clntudp_freeres();
+static bool_t           clntudp_control();
+static void		clntudp_destroy();
+
+static struct clnt_ops udp_ops = {
+	clntudp_call,
+	clntudp_abort,
+	clntudp_geterr,
+	clntudp_freeres,
+	clntudp_destroy,
+	clntudp_control
+};
+
+/*
+ * Private data kept per client handle
+ */
+struct cu_data {
+	int		   cu_sock;
+	bool_t		   cu_closeit;
+	struct sockaddr_in cu_raddr;
+	int		   cu_rlen;
+	struct timeval	   cu_wait;
+	struct timeval     cu_total;
+	struct rpc_err	   cu_error;
+	XDR		   cu_outxdrs;
+	u_int		   cu_xdrpos;
+	u_int		   cu_sendsz;
+	char		   *cu_outbuf;
+	u_int		   cu_recvsz;
+	char		   cu_inbuf[1];
+};
+
+/*
+ * Create a UDP based client handle.
+ * If *sockp<0, *sockp is set to a newly created UPD socket.
+ * If raddr->sin_port is 0 a binder on the remote machine
+ * is consulted for the correct port number.
+ * NB: It is the clients responsibility to close *sockp.
+ * NB: The rpch->cl_auth is initialized to null authentication.
+ *     Caller may wish to set this something more useful.
+ *
+ * wait is the amount of time used between retransmitting a call if
+ * no response has been heard;  retransmition occurs until the actual
+ * rpc call times out.
+ *
+ * sendsz and recvsz are the maximum allowable packet sizes that can be
+ * sent and received.
+ */
+CLIENT *
+clntudp_bufcreate(raddr, program, version, wait, sockp, sendsz, recvsz)
+	struct sockaddr_in *raddr;
+	u_long program;
+	u_long version;
+	struct timeval wait;
+	register int *sockp;
+	u_int sendsz;
+	u_int recvsz;
+{
+	CLIENT *cl;
+	register struct cu_data *cu;
+	struct timeval now;
+	struct rpc_msg call_msg;
+
+	cl = (CLIENT *)mem_alloc(sizeof(CLIENT));
+	if (cl == NULL) {
+		(void) fprintf(stderr, "clntudp_create: out of memory\n");
+		rpc_createerr.cf_stat = RPC_SYSTEMERROR;
+		rpc_createerr.cf_error.re_errno = errno;
+		goto fooy;
+	}
+	sendsz = ((sendsz + 3) / 4) * 4;
+	recvsz = ((recvsz + 3) / 4) * 4;
+	cu = (struct cu_data *)mem_alloc(sizeof(*cu) + sendsz + recvsz);
+	if (cu == NULL) {
+		(void) fprintf(stderr, "clntudp_create: out of memory\n");
+		rpc_createerr.cf_stat = RPC_SYSTEMERROR;
+		rpc_createerr.cf_error.re_errno = errno;
+		goto fooy;
+	}
+	cu->cu_outbuf = &cu->cu_inbuf[recvsz];
+
+	(void)gettimeofday(&now, (struct timezone *)0);
+	if (raddr->sin_port == 0) {
+		u_short port;
+		if ((port =
+		    pmap_getport(raddr, program, version, IPPROTO_UDP)) == 0) {
+			goto fooy;
+		}
+		raddr->sin_port = htons(port);
+	}
+	cl->cl_ops = &udp_ops;
+	cl->cl_private = (caddr_t)cu;
+	cu->cu_raddr = *raddr;
+	cu->cu_rlen = sizeof (cu->cu_raddr);
+	cu->cu_wait = wait;
+	cu->cu_total.tv_sec = -1;
+	cu->cu_total.tv_usec = -1;
+	cu->cu_sendsz = sendsz;
+	cu->cu_recvsz = recvsz;
+	call_msg.rm_xid = getpid() ^ now.tv_sec ^ now.tv_usec;
+	call_msg.rm_direction = CALL;
+	call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
+	call_msg.rm_call.cb_prog = program;
+	call_msg.rm_call.cb_vers = version;
+	xdrmem_create(&(cu->cu_outxdrs), cu->cu_outbuf,
+	    sendsz, XDR_ENCODE);
+	if (! xdr_callhdr(&(cu->cu_outxdrs), &call_msg)) {
+		goto fooy;
+	}
+	cu->cu_xdrpos = XDR_GETPOS(&(cu->cu_outxdrs));
+	if (*sockp < 0) {
+		int dontblock = 1;
+
+		*sockp = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+		if (*sockp < 0) {
+			rpc_createerr.cf_stat = RPC_SYSTEMERROR;
+			rpc_createerr.cf_error.re_errno = errno;
+			goto fooy;
+		}
+		/* attempt to bind to prov port */
+		(void)bindresvport(*sockp, (struct sockaddr_in *)0);
+		/* the sockets rpc controls are non-blocking */
+		(void)ioctl(*sockp, FIONBIO, (char *) &dontblock);
+		cu->cu_closeit = TRUE;
+	} else {
+		cu->cu_closeit = FALSE;
+	}
+	cu->cu_sock = *sockp;
+	cl->cl_auth = authnone_create();
+	return (cl);
+fooy:
+	if (cu)
+		mem_free((caddr_t)cu, sizeof(*cu) + sendsz + recvsz);
+	if (cl)
+		mem_free((caddr_t)cl, sizeof(CLIENT));
+	return ((CLIENT *)NULL);
+}
+
+CLIENT *
+clntudp_create(raddr, program, version, wait, sockp)
+	struct sockaddr_in *raddr;
+	u_long program;
+	u_long version;
+	struct timeval wait;
+	register int *sockp;
+{
+
+	return(clntudp_bufcreate(raddr, program, version, wait, sockp,
+	    UDPMSGSIZE, UDPMSGSIZE));
+}
+
+static enum clnt_stat
+clntudp_call(cl, proc, xargs, argsp, xresults, resultsp, utimeout)
+	register CLIENT	*cl;		/* client handle */
+	u_long		proc;		/* procedure number */
+	xdrproc_t	xargs;		/* xdr routine for args */
+	caddr_t		argsp;		/* pointer to args */
+	xdrproc_t	xresults;	/* xdr routine for results */
+	caddr_t		resultsp;	/* pointer to results */
+	struct timeval	utimeout;	/* seconds to wait before giving up */
+{
+	register struct cu_data *cu = (struct cu_data *)cl->cl_private;
+	register XDR *xdrs;
+	register int outlen;
+	register int inlen;
+	int fromlen;
+#ifdef FD_SETSIZE
+	fd_set readfds;
+	fd_set mask;
+#else
+	int readfds;
+	register int mask;
+#endif /* def FD_SETSIZE */
+	struct sockaddr_in from;
+	struct rpc_msg reply_msg;
+	XDR reply_xdrs;
+	struct timeval time_waited;
+	bool_t ok;
+	int nrefreshes = 2;	/* number of times to refresh cred */
+	struct timeval timeout;
+
+	if (cu->cu_total.tv_usec == -1) {
+		timeout = utimeout;     /* use supplied timeout */
+	} else {
+		timeout = cu->cu_total; /* use default timeout */
+	}
+
+	time_waited.tv_sec = 0;
+	time_waited.tv_usec = 0;
+call_again:
+	xdrs = &(cu->cu_outxdrs);
+	xdrs->x_op = XDR_ENCODE;
+	XDR_SETPOS(xdrs, cu->cu_xdrpos);
+	/*
+	 * the transaction is the first thing in the out buffer
+	 */
+	(*(u_short *)(cu->cu_outbuf))++;
+	if ((! XDR_PUTLONG(xdrs, (long *)&proc)) ||
+	    (! AUTH_MARSHALL(cl->cl_auth, xdrs)) ||
+	    (! (*xargs)(xdrs, argsp)))
+		return (cu->cu_error.re_status = RPC_CANTENCODEARGS);
+	outlen = (int)XDR_GETPOS(xdrs);
+
+send_again:
+	if (sendto(cu->cu_sock, cu->cu_outbuf, outlen, 0,
+	    (struct sockaddr *)&(cu->cu_raddr), cu->cu_rlen)
+	    != outlen) {
+		cu->cu_error.re_errno = errno;
+		return (cu->cu_error.re_status = RPC_CANTSEND);
+	}
+
+	/*
+	 * Hack to provide rpc-based message passing
+	 */
+	if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
+		return (cu->cu_error.re_status = RPC_TIMEDOUT);
+	}
+	/*
+	 * sub-optimal code appears here because we have
+	 * some clock time to spare while the packets are in flight.
+	 * (We assume that this is actually only executed once.)
+	 */
+	reply_msg.acpted_rply.ar_verf = _null_auth;
+	reply_msg.acpted_rply.ar_results.where = resultsp;
+	reply_msg.acpted_rply.ar_results.proc = xresults;
+#ifdef FD_SETSIZE
+	FD_ZERO(&mask);
+	FD_SET(cu->cu_sock, &mask);
+#else
+	mask = 1 << cu->cu_sock;
+#endif /* def FD_SETSIZE */
+	for (;;) {
+		readfds = mask;
+		switch (select(_rpc_dtablesize(), &readfds, (fd_set *)NULL,
+			       (fd_set *)NULL, &(cu->cu_wait))) {
+
+		case 0:
+			time_waited.tv_sec += cu->cu_wait.tv_sec;
+			time_waited.tv_usec += cu->cu_wait.tv_usec;
+			while (time_waited.tv_usec >= 1000000) {
+				time_waited.tv_sec++;
+				time_waited.tv_usec -= 1000000;
+			}
+			if ((time_waited.tv_sec < timeout.tv_sec) ||
+				((time_waited.tv_sec == timeout.tv_sec) &&
+				(time_waited.tv_usec < timeout.tv_usec)))
+				goto send_again;
+			return (cu->cu_error.re_status = RPC_TIMEDOUT);
+
+		/*
+		 * buggy in other cases because time_waited is not being
+		 * updated.
+		 */
+		case -1:
+			if (errno == EINTR)
+				continue;
+			cu->cu_error.re_errno = errno;
+			return (cu->cu_error.re_status = RPC_CANTRECV);
+		}
+		do {
+			fromlen = sizeof(struct sockaddr);
+			inlen = recvfrom(cu->cu_sock, cu->cu_inbuf,
+				(int) cu->cu_recvsz, 0,
+				(struct sockaddr *)&from, &fromlen);
+		} while (inlen < 0 && errno == EINTR);
+		if (inlen < 0) {
+			if (errno == EWOULDBLOCK)
+				continue;
+			cu->cu_error.re_errno = errno;
+			return (cu->cu_error.re_status = RPC_CANTRECV);
+		}
+		if (inlen < sizeof(u_long))
+			continue;
+		/* see if reply transaction id matches sent id */
+		if (*((u_long *)(cu->cu_inbuf)) != *((u_long *)(cu->cu_outbuf)))
+			continue;
+		/* we now assume we have the proper reply */
+		break;
+	}
+
+	/*
+	 * now decode and validate the response
+	 */
+	xdrmem_create(&reply_xdrs, cu->cu_inbuf, (u_int)inlen, XDR_DECODE);
+	ok = xdr_replymsg(&reply_xdrs, &reply_msg);
+	/* XDR_DESTROY(&reply_xdrs);  save a few cycles on noop destroy */
+	if (ok) {
+		_seterr_reply(&reply_msg, &(cu->cu_error));
+		if (cu->cu_error.re_status == RPC_SUCCESS) {
+			if (! AUTH_VALIDATE(cl->cl_auth,
+				&reply_msg.acpted_rply.ar_verf)) {
+				cu->cu_error.re_status = RPC_AUTHERROR;
+				cu->cu_error.re_why = AUTH_INVALIDRESP;
+			}
+			if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
+				xdrs->x_op = XDR_FREE;
+				(void)xdr_opaque_auth(xdrs,
+				    &(reply_msg.acpted_rply.ar_verf));
+			}
+		}  /* end successful completion */
+		else {
+			/* maybe our credentials need to be refreshed ... */
+			if (nrefreshes > 0 && AUTH_REFRESH(cl->cl_auth)) {
+				nrefreshes--;
+				goto call_again;
+			}
+		}  /* end of unsuccessful completion */
+	}  /* end of valid reply message */
+	else {
+		cu->cu_error.re_status = RPC_CANTDECODERES;
+	}
+	return (cu->cu_error.re_status);
+}
+
+static void
+clntudp_geterr(cl, errp)
+	CLIENT *cl;
+	struct rpc_err *errp;
+{
+	register struct cu_data *cu = (struct cu_data *)cl->cl_private;
+
+	*errp = cu->cu_error;
+}
+
+
+static bool_t
+clntudp_freeres(cl, xdr_res, res_ptr)
+	CLIENT *cl;
+	xdrproc_t xdr_res;
+	caddr_t res_ptr;
+{
+	register struct cu_data *cu = (struct cu_data *)cl->cl_private;
+	register XDR *xdrs = &(cu->cu_outxdrs);
+
+	xdrs->x_op = XDR_FREE;
+	return ((*xdr_res)(xdrs, res_ptr));
+}
+
+static void
+clntudp_abort(/*h*/)
+	/*CLIENT *h;*/
+{
+}
+
+static bool_t
+clntudp_control(cl, request, info)
+	CLIENT *cl;
+	int request;
+	char *info;
+{
+	register struct cu_data *cu = (struct cu_data *)cl->cl_private;
+
+	switch (request) {
+	case CLSET_TIMEOUT:
+		cu->cu_total = *(struct timeval *)info;
+		break;
+	case CLGET_TIMEOUT:
+		*(struct timeval *)info = cu->cu_total;
+		break;
+	case CLSET_RETRY_TIMEOUT:
+		cu->cu_wait = *(struct timeval *)info;
+		break;
+	case CLGET_RETRY_TIMEOUT:
+		*(struct timeval *)info = cu->cu_wait;
+		break;
+	case CLGET_SERVER_ADDR:
+		*(struct sockaddr_in *)info = cu->cu_raddr;
+		break;
+	default:
+		return (FALSE);
+	}
+	return (TRUE);
+}
+
+static void
+clntudp_destroy(cl)
+	CLIENT *cl;
+{
+	register struct cu_data *cu = (struct cu_data *)cl->cl_private;
+
+	if (cu->cu_closeit) {
+		(void)close(cu->cu_sock);
+	}
+	XDR_DESTROY(&(cu->cu_outxdrs));
+	mem_free((caddr_t)cu, (sizeof(*cu) + cu->cu_sendsz + cu->cu_recvsz));
+	mem_free((caddr_t)cl, sizeof(CLIENT));
+}
diff --git a/lib/libc/rpc/get_myaddress.c b/lib/libc/rpc/get_myaddress.c
new file mode 100644
index 0000000..1565531
--- /dev/null
+++ b/lib/libc/rpc/get_myaddress.c
@@ -0,0 +1,100 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)get_myaddress.c 1.4 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)get_myaddress.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: get_myaddress.c,v 1.2 1995/05/30 05:41:20 rgrimes Exp $";
+#endif
+
+/*
+ * get_myaddress.c
+ *
+ * Get client's IP address via ioctl.  This avoids using the yellowpages.
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <rpc/types.h>
+#include <rpc/xdr.h>
+#include <rpc/pmap_prot.h>
+#include <sys/socket.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <net/if.h>
+#include <sys/ioctl.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+/*
+ * don't use gethostbyname, which would invoke yellow pages
+ */
+get_myaddress(addr)
+	struct sockaddr_in *addr;
+{
+	int s;
+	char buf[BUFSIZ];
+	struct ifconf ifc;
+	struct ifreq ifreq, *ifr;
+	int len, slop;
+
+	if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+	    perror("get_myaddress: socket");
+	    exit(1);
+	}
+	ifc.ifc_len = sizeof (buf);
+	ifc.ifc_buf = buf;
+	if (ioctl(s, SIOCGIFCONF, (char *)&ifc) < 0) {
+		perror("get_myaddress: ioctl (get interface configuration)");
+		exit(1);
+	}
+	ifr = ifc.ifc_req;
+	for (len = ifc.ifc_len; len; len -= sizeof ifreq) {
+		ifreq = *ifr;
+		if (ioctl(s, SIOCGIFFLAGS, (char *)&ifreq) < 0) {
+			perror("get_myaddress: ioctl");
+			exit(1);
+		}
+		if ((ifreq.ifr_flags & IFF_UP) &&
+		    ifr->ifr_addr.sa_family == AF_INET) {
+			*addr = *((struct sockaddr_in *)&ifr->ifr_addr);
+			addr->sin_port = htons(PMAPPORT);
+			break;
+		}
+		/*
+		 * Deal with variable length addresses
+		 */
+		slop = ifr->ifr_addr.sa_len - sizeof (struct sockaddr);
+		if (slop) {
+			ifr = (struct ifreq *) ((caddr_t)ifr + slop);
+			len -= slop;
+		}
+		ifr++;
+	}
+	(void) close(s);
+}
diff --git a/lib/libc/rpc/getrpcent.3 b/lib/libc/rpc/getrpcent.3
new file mode 100644
index 0000000..edf64e4
--- /dev/null
+++ b/lib/libc/rpc/getrpcent.3
@@ -0,0 +1,109 @@
+.\" @(#)getrpcent.3n	2.2 88/08/02 4.0 RPCSRC; from 1.11 88/03/14 SMI
+.TH GETRPCENT 3N "14 December 1987"
+.SH NAME
+getrpcent, getrpcbyname, getrpcbynumber \- get RPC entry
+.SH SYNOPSIS
+.nf
+.ft B
+#include <netdb.h>
+.LP
+.ft B
+struct rpcent *getrpcent(\|)
+.LP
+.ft B
+struct rpcent *getrpcbyname(name)
+char *name;
+.LP
+.ft B
+struct rpcent *getrpcbynumber(number)
+int number;
+.LP
+.ft B
+setrpcent (stayopen)
+int stayopen
+.LP
+.ft B
+endrpcent (\|)
+.fi
+.SH DESCRIPTION
+.LP
+.BR getrpcent(\|) ,
+.BR getrpcbyname(\|) ,
+and
+.B getrpcbynumber(\|)
+each return a pointer to an object with the
+following structure
+containing the broken-out
+fields of a line in the rpc program number data base,
+.BR /etc/rpc .
+.RS
+.LP
+.nf
+.ft B
+struct	rpcent {
+	char	*r_name;	/* name of server for this rpc program */
+	char	**r_aliases;	/* alias list */
+	long	r_number;	/* rpc program number */
+};
+.ft R
+.fi
+.RE
+.LP
+The members of this structure are:
+.RS
+.PD 0
+.TP 20
+.B r_name
+The name of the server for this rpc program.
+.TP 20
+.B r_aliases
+A zero terminated list of alternate names for the rpc program.
+.TP  20
+.B r_number
+The rpc program number for this service.
+.PD
+.RE
+.LP
+.B getrpcent(\|)
+reads the next line of the file, opening the file if necessary.
+.LP
+.B getrpcent(\|)
+opens and rewinds the file.  If the
+.I stayopen
+flag is non-zero,
+the net data base will not be closed after each call to
+.B getrpcent(\|)
+(either directly, or indirectly through one of
+the other \*(lqgetrpc\*(rq calls).
+.LP
+.B endrpcent
+closes the file.
+.LP
+.B getrpcbyname(\|)
+and
+.B getrpcbynumber(\|)
+sequentially search from the beginning
+of the file until a matching rpc program name or
+program number is found, or until end-of-file is encountered.
+.SH FILES
+.PD 0
+.TP 20
+.B /etc/rpc
+.PD
+.SH "SEE ALSO"
+.BR rpc (5),
+.BR rpcinfo (8),
+.BR ypserv (8)
+.SH DIAGNOSTICS
+.LP
+A
+.SM NULL
+pointer is returned on 
+.SM EOF
+or error.
+.SH BUGS
+.LP
+All information
+is contained in a static area
+so it must be copied if it is
+to be saved.
diff --git a/lib/libc/rpc/getrpcent.c b/lib/libc/rpc/getrpcent.c
new file mode 100644
index 0000000..e9b919c
--- /dev/null
+++ b/lib/libc/rpc/getrpcent.c
@@ -0,0 +1,299 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user or with the express written consent of
+ * Sun Microsystems, Inc.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)getrpcent.c 1.14 91/03/11 Copyr 1984 Sun Micro";*/
+static char *rcsid = "$Id: getrpcent.c,v 1.2 1995/05/30 05:41:21 rgrimes Exp $";
+#endif
+
+/*
+ * Copyright (c) 1984 by Sun Microsystems, Inc.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <string.h>
+#include <rpc/rpc.h>
+#ifdef YP
+#include <rpcsvc/yp_prot.h>
+#include <rpcsvc/ypclnt.h>
+#endif
+
+/*
+ * Internet version.
+ */
+struct rpcdata {
+	FILE	*rpcf;
+	int	stayopen;
+#define	MAXALIASES	35
+	char	*rpc_aliases[MAXALIASES];
+	struct	rpcent rpc;
+	char	line[BUFSIZ+1];
+#ifdef	YP
+	char	*domain;
+	char	*current;
+	int	currentlen;
+#endif
+} *rpcdata;
+
+#ifdef	YP
+static int	__yp_nomap = 0;
+#endif	/* YP */
+
+static	struct rpcent *interpret();
+struct	hostent *gethostent();
+char	*inet_ntoa();
+
+static char RPCDB[] = "/etc/rpc";
+
+static struct rpcdata *
+_rpcdata()
+{
+	register struct rpcdata *d = rpcdata;
+
+	if (d == 0) {
+		d = (struct rpcdata *)calloc(1, sizeof (struct rpcdata));
+		rpcdata = d;
+	}
+	return (d);
+}
+
+struct rpcent *
+getrpcbynumber(number)
+	register int number;
+{
+	register struct rpcdata *d = _rpcdata();
+	register struct rpcent *p;
+#ifdef	YP
+	int reason;
+	char adrstr[16];
+#endif
+
+	if (d == 0)
+		return (0);
+#ifdef	YP
+        if (!__yp_nomap && _yp_check(&d->domain)) {
+                sprintf(adrstr, "%d", number);
+                reason = yp_match(d->domain, "rpc.bynumber", adrstr, strlen(adrstr),
+                                  &d->current, &d->currentlen);
+                switch(reason) {
+                case 0:
+                        break;
+                case YPERR_MAP:
+                        __yp_nomap = 1;
+                        goto no_yp;
+                        break;
+                default:
+                        return(0);
+                        break;
+                }
+                d->current[d->currentlen] = '\0';
+                p = interpret(d->current, d->currentlen);
+                (void) free(d->current);
+                return p;
+        }
+no_yp:
+#endif	/* YP */
+	setrpcent(0);
+	while (p = getrpcent()) {
+		if (p->r_number == number)
+			break;
+	}
+	endrpcent();
+	return (p);
+}
+
+struct rpcent *
+getrpcbyname(name)
+	char *name;
+{
+	struct rpcent *rpc;
+	char **rp;
+
+	setrpcent(0);
+	while (rpc = getrpcent()) {
+		if (strcmp(rpc->r_name, name) == 0)
+			return (rpc);
+		for (rp = rpc->r_aliases; *rp != NULL; rp++) {
+			if (strcmp(*rp, name) == 0)
+				return (rpc);
+		}
+	}
+	endrpcent();
+	return (NULL);
+}
+
+void
+setrpcent(f)
+	int f;
+{
+	register struct rpcdata *d = _rpcdata();
+
+	if (d == 0)
+		return;
+#ifdef	YP
+        if (!__yp_nomap && _yp_check(NULL)) {
+                if (d->current)
+                        free(d->current);
+                d->current = NULL;
+                d->currentlen = 0;
+                return;
+        }
+        __yp_nomap = 0;
+#endif	/* YP */
+	if (d->rpcf == NULL)
+		d->rpcf = fopen(RPCDB, "r");
+	else
+		rewind(d->rpcf);
+	d->stayopen |= f;
+}
+
+void
+endrpcent()
+{
+	register struct rpcdata *d = _rpcdata();
+
+	if (d == 0)
+		return;
+#ifdef	YP
+        if (!__yp_nomap && _yp_check(NULL)) {
+        	if (d->current && !d->stayopen)
+                        free(d->current);
+                d->current = NULL;
+                d->currentlen = 0;
+                return;
+        }
+        __yp_nomap = 0;
+#endif	/* YP */
+	if (d->rpcf && !d->stayopen) {
+		fclose(d->rpcf);
+		d->rpcf = NULL;
+	}
+}
+
+struct rpcent *
+getrpcent()
+{
+	struct rpcent *hp;
+	int reason;
+	register struct rpcdata *d = _rpcdata();
+#ifdef	YP
+	char *val = NULL;
+	int vallen;
+#endif
+
+	if (d == 0)
+		return(NULL);
+#ifdef	YP
+        if (!__yp_nomap && _yp_check(&d->domain)) {
+                if (d->current == NULL && d->currentlen == 0) {
+                        reason = yp_first(d->domain, "rpc.bynumber",
+                                          &d->current, &d->currentlen,
+                                          &val, &vallen);
+                } else {
+                        reason = yp_next(d->domain, "rpc.bynumber",
+                                         d->current, d->currentlen,
+                                         &d->current, &d->currentlen,
+                                         &val, &vallen);
+                }
+                switch(reason) {
+                case 0:
+                        break;
+                case YPERR_MAP:
+                        __yp_nomap = 1;
+                        goto no_yp;
+                        break;
+                default:
+                        return(0);
+                        break;
+                }
+                val[vallen] = '\0';
+                hp = interpret(val, vallen);
+                (void) free(val);
+                return hp;
+        }
+no_yp:
+#endif	/* YP */
+	if (d->rpcf == NULL && (d->rpcf = fopen(RPCDB, "r")) == NULL)
+		return (NULL);
+        if (fgets(d->line, BUFSIZ, d->rpcf) == NULL)
+		return (NULL);
+	return (interpret(d->line, strlen(d->line)));
+}
+
+static struct rpcent *
+interpret(val, len)
+	char *val;
+	int len;
+{
+	register struct rpcdata *d = _rpcdata();
+	char *p;
+	register char *cp, **q;
+
+	if (d == 0)
+		return (0);
+	(void) strncpy(d->line, val, len);
+	p = d->line;
+	d->line[len] = '\n';
+	if (*p == '#')
+		return (getrpcent());
+	cp = strpbrk(p, "#\n");
+	if (cp == NULL)
+		return (getrpcent());
+	*cp = '\0';
+	cp = strpbrk(p, " \t");
+	if (cp == NULL)
+		return (getrpcent());
+	*cp++ = '\0';
+	/* THIS STUFF IS INTERNET SPECIFIC */
+	d->rpc.r_name = d->line;
+	while (*cp == ' ' || *cp == '\t')
+		cp++;
+	d->rpc.r_number = atoi(cp);
+	q = d->rpc.r_aliases = d->rpc_aliases;
+	cp = strpbrk(cp, " \t");
+	if (cp != NULL)
+		*cp++ = '\0';
+	while (cp && *cp) {
+		if (*cp == ' ' || *cp == '\t') {
+			cp++;
+			continue;
+		}
+		if (q < &(d->rpc_aliases[MAXALIASES - 1]))
+			*q++ = cp;
+		cp = strpbrk(cp, " \t");
+		if (cp != NULL)
+			*cp++ = '\0';
+	}
+	*q = NULL;
+	return (&d->rpc);
+}
+
diff --git a/lib/libc/rpc/getrpcport.3 b/lib/libc/rpc/getrpcport.3
new file mode 100644
index 0000000..01e7502
--- /dev/null
+++ b/lib/libc/rpc/getrpcport.3
@@ -0,0 +1,31 @@
+.\" @(#)getrpcport.3r	2.2 88/08/02 4.0 RPCSRC; from 1.12 88/02/26 SMI
+.TH GETRPCPORT 3 "6 October 1987"
+.SH NAME
+getrpcport \- get RPC port number
+.SH SYNOPSIS
+.ft B
+.nf
+int getrpcport(host, prognum, versnum, proto)
+	char *host;
+	int prognum, versnum, proto;
+.fi
+.SH DESCRIPTION
+.IX getrpcport "" "\fLgetrpcport\fR \(em get RPC port number"
+.B getrpcport(\|)
+returns the port number for version
+.I versnum
+of the RPC program
+.I prognum
+running on
+.I host
+and using protocol
+.IR proto .
+It returns 0 if it cannot contact the portmapper, or if
+.I prognum
+is not registered.  If
+.I prognum
+is registered but not with version
+.IR versnum ,
+it will still return a port number (for some version of the program)
+indicating that the program is indeed registered.
+The version mismatch will be detected upon the first call to the service.
diff --git a/lib/libc/rpc/getrpcport.c b/lib/libc/rpc/getrpcport.c
new file mode 100644
index 0000000..b280493
--- /dev/null
+++ b/lib/libc/rpc/getrpcport.c
@@ -0,0 +1,58 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)getrpcport.c 1.3 87/08/11 SMI";*/
+/*static char *sccsid = "from: @(#)getrpcport.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: getrpcport.c,v 1.2 1995/05/30 05:41:22 rgrimes Exp $";
+#endif
+
+/*
+ * Copyright (c) 1985 by Sun Microsystems, Inc.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <rpc/rpc.h>
+#include <netdb.h>
+#include <sys/socket.h>
+
+getrpcport(host, prognum, versnum, proto)
+	char *host;
+{
+	struct sockaddr_in addr;
+	struct hostent *hp;
+
+	if ((hp = gethostbyname(host)) == NULL)
+		return (0);
+	bcopy(hp->h_addr, (char *) &addr.sin_addr, hp->h_length);
+	addr.sin_family = AF_INET;
+	addr.sin_port =  0;
+	return (pmap_getport(&addr, prognum, versnum, proto));
+}
diff --git a/lib/libc/rpc/pmap_clnt.c b/lib/libc/rpc/pmap_clnt.c
new file mode 100644
index 0000000..c91682f
--- /dev/null
+++ b/lib/libc/rpc/pmap_clnt.c
@@ -0,0 +1,118 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)pmap_clnt.c 1.37 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)pmap_clnt.c	2.2 88/08/01 4.0 RPCSRC";*/
+static char *rcsid = "$Id: pmap_clnt.c,v 1.2 1995/05/30 05:41:22 rgrimes Exp $";
+#endif
+
+/*
+ * pmap_clnt.c
+ * Client interface to pmap rpc service.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <unistd.h>
+#include <rpc/rpc.h>
+#include <rpc/pmap_prot.h>
+#include <rpc/pmap_clnt.h>
+
+static struct timeval timeout = { 5, 0 };
+static struct timeval tottimeout = { 60, 0 };
+
+void clnt_perror();
+
+
+/*
+ * Set a mapping between program,version and port.
+ * Calls the pmap service remotely to do the mapping.
+ */
+bool_t
+pmap_set(program, version, protocol, port)
+	u_long program;
+	u_long version;
+	int protocol;
+	u_short port;
+{
+	struct sockaddr_in myaddress;
+	int socket = -1;
+	register CLIENT *client;
+	struct pmap parms;
+	bool_t rslt;
+
+	get_myaddress(&myaddress);
+	client = clntudp_bufcreate(&myaddress, PMAPPROG, PMAPVERS,
+	    timeout, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
+	if (client == (CLIENT *)NULL)
+		return (FALSE);
+	parms.pm_prog = program;
+	parms.pm_vers = version;
+	parms.pm_prot = protocol;
+	parms.pm_port = port;
+	if (CLNT_CALL(client, PMAPPROC_SET, xdr_pmap, &parms, xdr_bool, &rslt,
+	    tottimeout) != RPC_SUCCESS) {
+		clnt_perror(client, "Cannot register service");
+		return (FALSE);
+	}
+	CLNT_DESTROY(client);
+	(void)close(socket);
+	return (rslt);
+}
+
+/*
+ * Remove the mapping between program,version and port.
+ * Calls the pmap service remotely to do the un-mapping.
+ */
+bool_t
+pmap_unset(program, version)
+	u_long program;
+	u_long version;
+{
+	struct sockaddr_in myaddress;
+	int socket = -1;
+	register CLIENT *client;
+	struct pmap parms;
+	bool_t rslt;
+
+	get_myaddress(&myaddress);
+	client = clntudp_bufcreate(&myaddress, PMAPPROG, PMAPVERS,
+	    timeout, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
+	if (client == (CLIENT *)NULL)
+		return (FALSE);
+	parms.pm_prog = program;
+	parms.pm_vers = version;
+	parms.pm_port = parms.pm_prot = 0;
+	CLNT_CALL(client, PMAPPROC_UNSET, xdr_pmap, &parms, xdr_bool, &rslt,
+	    tottimeout);
+	CLNT_DESTROY(client);
+	(void)close(socket);
+	return (rslt);
+}
diff --git a/lib/libc/rpc/pmap_getmaps.c b/lib/libc/rpc/pmap_getmaps.c
new file mode 100644
index 0000000..cbb1a43
--- /dev/null
+++ b/lib/libc/rpc/pmap_getmaps.c
@@ -0,0 +1,87 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)pmap_getmaps.c 1.10 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)pmap_getmaps.c	2.2 88/08/01 4.0 RPCSRC";*/
+static char *rcsid = "$Id: pmap_getmaps.c,v 1.2 1995/05/30 05:41:23 rgrimes Exp $";
+#endif
+
+/*
+ * pmap_getmap.c
+ * Client interface to pmap rpc service.
+ * contains pmap_getmaps, which is only tcp service involved
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <rpc/rpc.h>
+#include <rpc/pmap_prot.h>
+#include <rpc/pmap_clnt.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <net/if.h>
+#include <sys/ioctl.h>
+#define NAMELEN 255
+#define MAX_BROADCAST_SIZE 1400
+
+extern int errno;
+
+/*
+ * Get a copy of the current port maps.
+ * Calls the pmap service remotely to do get the maps.
+ */
+struct pmaplist *
+pmap_getmaps(address)
+	 struct sockaddr_in *address;
+{
+	struct pmaplist *head = (struct pmaplist *)NULL;
+	int socket = -1;
+	struct timeval minutetimeout;
+	register CLIENT *client;
+
+	minutetimeout.tv_sec = 60;
+	minutetimeout.tv_usec = 0;
+	address->sin_port = htons(PMAPPORT);
+	client = clnttcp_create(address, PMAPPROG,
+	    PMAPVERS, &socket, 50, 500);
+	if (client != (CLIENT *)NULL) {
+		if (CLNT_CALL(client, PMAPPROC_DUMP, xdr_void, NULL, xdr_pmaplist,
+		    &head, minutetimeout) != RPC_SUCCESS) {
+			clnt_perror(client, "pmap_getmaps rpc problem");
+		}
+		CLNT_DESTROY(client);
+	}
+	(void)close(socket);
+	address->sin_port = 0;
+	return (head);
+}
diff --git a/lib/libc/rpc/pmap_getport.c b/lib/libc/rpc/pmap_getport.c
new file mode 100644
index 0000000..dd63a37
--- /dev/null
+++ b/lib/libc/rpc/pmap_getport.c
@@ -0,0 +1,90 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)pmap_getport.c 1.9 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)pmap_getport.c	2.2 88/08/01 4.0 RPCSRC";*/
+static char *rcsid = "$Id: pmap_getport.c,v 1.2 1995/05/30 05:41:24 rgrimes Exp $";
+#endif
+
+/*
+ * pmap_getport.c
+ * Client interface to pmap rpc service.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <rpc/rpc.h>
+#include <rpc/pmap_prot.h>
+#include <rpc/pmap_clnt.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <unistd.h>
+
+static struct timeval timeout = { 5, 0 };
+static struct timeval tottimeout = { 60, 0 };
+
+/*
+ * Find the mapped port for program,version.
+ * Calls the pmap service remotely to do the lookup.
+ * Returns 0 if no map exists.
+ */
+u_short
+pmap_getport(address, program, version, protocol)
+	struct sockaddr_in *address;
+	u_long program;
+	u_long version;
+	u_int protocol;
+{
+	u_short port = 0;
+	int socket = -1;
+	register CLIENT *client;
+	struct pmap parms;
+
+	address->sin_port = htons(PMAPPORT);
+	client = clntudp_bufcreate(address, PMAPPROG,
+	    PMAPVERS, timeout, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
+	if (client != (CLIENT *)NULL) {
+		parms.pm_prog = program;
+		parms.pm_vers = version;
+		parms.pm_prot = protocol;
+		parms.pm_port = 0;  /* not needed or used */
+		if (CLNT_CALL(client, PMAPPROC_GETPORT, xdr_pmap, &parms,
+		    xdr_u_short, &port, tottimeout) != RPC_SUCCESS){
+			rpc_createerr.cf_stat = RPC_PMAPFAILURE;
+			clnt_geterr(client, &rpc_createerr.cf_error);
+		} else if (port == 0) {
+			rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
+		}
+		CLNT_DESTROY(client);
+	}
+	(void)close(socket);
+	address->sin_port = 0;
+	return (port);
+}
diff --git a/lib/libc/rpc/pmap_prot.c b/lib/libc/rpc/pmap_prot.c
new file mode 100644
index 0000000..07b5acd
--- /dev/null
+++ b/lib/libc/rpc/pmap_prot.c
@@ -0,0 +1,59 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)pmap_prot.c 1.17 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)pmap_prot.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: pmap_prot.c,v 1.1 1994/08/07 18:35:56 wollman Exp $";
+#endif
+
+/*
+ * pmap_prot.c
+ * Protocol for the local binder service, or pmap.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <rpc/types.h>
+#include <rpc/xdr.h>
+#include <rpc/pmap_prot.h>
+
+
+bool_t
+xdr_pmap(xdrs, regs)
+	XDR *xdrs;
+	struct pmap *regs;
+{
+
+	if (xdr_u_long(xdrs, &regs->pm_prog) &&
+		xdr_u_long(xdrs, &regs->pm_vers) &&
+		xdr_u_long(xdrs, &regs->pm_prot))
+		return (xdr_u_long(xdrs, &regs->pm_port));
+	return (FALSE);
+}
diff --git a/lib/libc/rpc/pmap_prot2.c b/lib/libc/rpc/pmap_prot2.c
new file mode 100644
index 0000000..5e937ed
--- /dev/null
+++ b/lib/libc/rpc/pmap_prot2.c
@@ -0,0 +1,118 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)pmap_prot2.c 1.3 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)pmap_prot2.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: pmap_prot2.c,v 1.1 1994/08/07 18:35:57 wollman Exp $";
+#endif
+
+/*
+ * pmap_prot2.c
+ * Protocol for the local binder service, or pmap.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <rpc/types.h>
+#include <rpc/xdr.h>
+#include <rpc/pmap_prot.h>
+
+
+/*
+ * What is going on with linked lists? (!)
+ * First recall the link list declaration from pmap_prot.h:
+ *
+ * struct pmaplist {
+ *	struct pmap pml_map;
+ *	struct pmaplist *pml_map;
+ * };
+ *
+ * Compare that declaration with a corresponding xdr declaration that
+ * is (a) pointer-less, and (b) recursive:
+ *
+ * typedef union switch (bool_t) {
+ *
+ *	case TRUE: struct {
+ *		struct pmap;
+ * 		pmaplist_t foo;
+ *	};
+ *
+ *	case FALSE: struct {};
+ * } pmaplist_t;
+ *
+ * Notice that the xdr declaration has no nxt pointer while
+ * the C declaration has no bool_t variable.  The bool_t can be
+ * interpreted as ``more data follows me''; if FALSE then nothing
+ * follows this bool_t; if TRUE then the bool_t is followed by
+ * an actual struct pmap, and then (recursively) by the
+ * xdr union, pamplist_t.
+ *
+ * This could be implemented via the xdr_union primitive, though this
+ * would cause a one recursive call per element in the list.  Rather than do
+ * that we can ``unwind'' the recursion
+ * into a while loop and do the union arms in-place.
+ *
+ * The head of the list is what the C programmer wishes to past around
+ * the net, yet is the data that the pointer points to which is interesting;
+ * this sounds like a job for xdr_reference!
+ */
+bool_t
+xdr_pmaplist(xdrs, rp)
+	register XDR *xdrs;
+	register struct pmaplist **rp;
+{
+	/*
+	 * more_elements is pre-computed in case the direction is
+	 * XDR_ENCODE or XDR_FREE.  more_elements is overwritten by
+	 * xdr_bool when the direction is XDR_DECODE.
+	 */
+	bool_t more_elements;
+	register int freeing = (xdrs->x_op == XDR_FREE);
+	register struct pmaplist **next;
+
+	while (TRUE) {
+		more_elements = (bool_t)(*rp != NULL);
+		if (! xdr_bool(xdrs, &more_elements))
+			return (FALSE);
+		if (! more_elements)
+			return (TRUE);  /* we are done */
+		/*
+		 * the unfortunate side effect of non-recursion is that in
+		 * the case of freeing we must remember the next object
+		 * before we free the current object ...
+		 */
+		if (freeing)
+			next = &((*rp)->pml_next);
+		if (! xdr_reference(xdrs, (caddr_t *)rp,
+		    (u_int)sizeof(struct pmaplist), xdr_pmap))
+			return (FALSE);
+		rp = (freeing) ? next : &((*rp)->pml_next);
+	}
+}
diff --git a/lib/libc/rpc/pmap_rmt.c b/lib/libc/rpc/pmap_rmt.c
new file mode 100644
index 0000000..8511206
--- /dev/null
+++ b/lib/libc/rpc/pmap_rmt.c
@@ -0,0 +1,399 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)pmap_rmt.c 1.21 87/08/27 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)pmap_rmt.c	2.2 88/08/01 4.0 RPCSRC";*/
+static char *rcsid = "$Id: pmap_rmt.c,v 1.3 1995/10/22 14:51:32 phk Exp $";
+#endif
+
+/*
+ * pmap_rmt.c
+ * Client interface to pmap rpc service.
+ * remote call and broadcast service
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <rpc/rpc.h>
+#include <rpc/pmap_prot.h>
+#include <rpc/pmap_clnt.h>
+#include <rpc/pmap_rmt.h>
+#include <sys/socket.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <net/if.h>
+#include <sys/ioctl.h>
+#include <arpa/inet.h>
+#define MAX_BROADCAST_SIZE 1400
+
+extern int errno;
+static struct timeval timeout = { 3, 0 };
+
+
+/*
+ * pmapper remote-call-service interface.
+ * This routine is used to call the pmapper remote call service
+ * which will look up a service program in the port maps, and then
+ * remotely call that routine with the given parameters.  This allows
+ * programs to do a lookup and call in one step.
+*/
+enum clnt_stat
+pmap_rmtcall(addr, prog, vers, proc, xdrargs, argsp, xdrres, resp, tout, port_ptr)
+	struct sockaddr_in *addr;
+	u_long prog, vers, proc;
+	xdrproc_t xdrargs, xdrres;
+	caddr_t argsp, resp;
+	struct timeval tout;
+	u_long *port_ptr;
+{
+	int socket = -1;
+	register CLIENT *client;
+	struct rmtcallargs a;
+	struct rmtcallres r;
+	enum clnt_stat stat;
+
+	addr->sin_port = htons(PMAPPORT);
+	client = clntudp_create(addr, PMAPPROG, PMAPVERS, timeout, &socket);
+	if (client != (CLIENT *)NULL) {
+		a.prog = prog;
+		a.vers = vers;
+		a.proc = proc;
+		a.args_ptr = argsp;
+		a.xdr_args = xdrargs;
+		r.port_ptr = port_ptr;
+		r.results_ptr = resp;
+		r.xdr_results = xdrres;
+		stat = CLNT_CALL(client, PMAPPROC_CALLIT, xdr_rmtcall_args, &a,
+		    xdr_rmtcallres, &r, tout);
+		CLNT_DESTROY(client);
+	} else {
+		stat = RPC_FAILED;
+	}
+	(void)close(socket);
+	addr->sin_port = 0;
+	return (stat);
+}
+
+
+/*
+ * XDR remote call arguments
+ * written for XDR_ENCODE direction only
+ */
+bool_t
+xdr_rmtcall_args(xdrs, cap)
+	register XDR *xdrs;
+	register struct rmtcallargs *cap;
+{
+	u_int lenposition, argposition, position;
+
+	if (xdr_u_long(xdrs, &(cap->prog)) &&
+	    xdr_u_long(xdrs, &(cap->vers)) &&
+	    xdr_u_long(xdrs, &(cap->proc))) {
+		lenposition = XDR_GETPOS(xdrs);
+		if (! xdr_u_long(xdrs, &(cap->arglen)))
+		    return (FALSE);
+		argposition = XDR_GETPOS(xdrs);
+		if (! (*(cap->xdr_args))(xdrs, cap->args_ptr))
+		    return (FALSE);
+		position = XDR_GETPOS(xdrs);
+		cap->arglen = (u_long)position - (u_long)argposition;
+		XDR_SETPOS(xdrs, lenposition);
+		if (! xdr_u_long(xdrs, &(cap->arglen)))
+		    return (FALSE);
+		XDR_SETPOS(xdrs, position);
+		return (TRUE);
+	}
+	return (FALSE);
+}
+
+/*
+ * XDR remote call results
+ * written for XDR_DECODE direction only
+ */
+bool_t
+xdr_rmtcallres(xdrs, crp)
+	register XDR *xdrs;
+	register struct rmtcallres *crp;
+{
+	caddr_t port_ptr;
+
+	port_ptr = (caddr_t)crp->port_ptr;
+	if (xdr_reference(xdrs, &port_ptr, sizeof (u_long),
+	    xdr_u_long) && xdr_u_long(xdrs, &crp->resultslen)) {
+		crp->port_ptr = (u_long *)port_ptr;
+		return ((*(crp->xdr_results))(xdrs, crp->results_ptr));
+	}
+	return (FALSE);
+}
+
+
+/*
+ * The following is kludged-up support for simple rpc broadcasts.
+ * Someday a large, complicated system will replace these trivial
+ * routines which only support udp/ip .
+ */
+
+static int
+getbroadcastnets(addrs, sock, buf)
+	struct in_addr *addrs;
+	int sock;  /* any valid socket will do */
+	char *buf;  /* why allocxate more when we can use existing... */
+{
+	struct ifconf ifc;
+        struct ifreq ifreq, *ifr;
+	struct sockaddr_in *sin;
+        char *cp, *cplim;
+        int n, i = 0;
+
+        ifc.ifc_len = UDPMSGSIZE;
+        ifc.ifc_buf = buf;
+        if (ioctl(sock, SIOCGIFCONF, (char *)&ifc) < 0) {
+                perror("broadcast: ioctl (get interface configuration)");
+                return (0);
+        }
+#define max(a, b) (a > b ? a : b)
+#define size(p)	max((p).sa_len, sizeof(p))
+	cplim = buf + ifc.ifc_len; /*skip over if's with big ifr_addr's */
+	for (cp = buf; cp < cplim;
+			cp += sizeof (ifr->ifr_name) + size(ifr->ifr_addr)) {
+		ifr = (struct ifreq *)cp;
+		if (ifr->ifr_addr.sa_family != AF_INET)
+			continue;
+		ifreq = *ifr;
+                if (ioctl(sock, SIOCGIFFLAGS, (char *)&ifreq) < 0) {
+                        perror("broadcast: ioctl (get interface flags)");
+                        continue;
+                }
+                if ((ifreq.ifr_flags & IFF_BROADCAST) &&
+		    (ifreq.ifr_flags & IFF_UP)) {
+			sin = (struct sockaddr_in *)&ifr->ifr_addr;
+#ifdef SIOCGIFBRDADDR   /* 4.3BSD */
+			if (ioctl(sock, SIOCGIFBRDADDR, (char *)&ifreq) < 0) {
+				addrs[i++] =
+				    inet_makeaddr(inet_netof(sin->sin_addr),
+				    INADDR_ANY);
+			} else {
+				addrs[i++] = ((struct sockaddr_in*)
+				  &ifreq.ifr_addr)->sin_addr;
+			}
+#else /* 4.2 BSD */
+			addrs[i++] = inet_makeaddr(inet_netof(sin->sin_addr),
+			    INADDR_ANY);
+#endif
+		}
+	}
+	return (i);
+}
+
+typedef bool_t (*resultproc_t)();
+
+enum clnt_stat
+clnt_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp, eachresult)
+	u_long		prog;		/* program number */
+	u_long		vers;		/* version number */
+	u_long		proc;		/* procedure number */
+	xdrproc_t	xargs;		/* xdr routine for args */
+	caddr_t		argsp;		/* pointer to args */
+	xdrproc_t	xresults;	/* xdr routine for results */
+	caddr_t		resultsp;	/* pointer to results */
+	resultproc_t	eachresult;	/* call with each result obtained */
+{
+	enum clnt_stat stat;
+	AUTH *unix_auth = authunix_create_default();
+	XDR xdr_stream;
+	register XDR *xdrs = &xdr_stream;
+	int outlen, inlen, fromlen, nets;
+	register int sock;
+	int on = 1;
+#ifdef FD_SETSIZE
+	fd_set mask;
+	fd_set readfds;
+#else
+	int readfds;
+	register int mask;
+#endif /* def FD_SETSIZE */
+	register int i;
+	bool_t done = FALSE;
+	register u_long xid;
+	u_long port;
+	struct in_addr addrs[20];
+	struct sockaddr_in baddr, raddr; /* broadcast and response addresses */
+	struct rmtcallargs a;
+	struct rmtcallres r;
+	struct rpc_msg msg;
+	struct timeval t;
+	char outbuf[MAX_BROADCAST_SIZE], inbuf[UDPMSGSIZE];
+
+	/*
+	 * initialization: create a socket, a broadcast address, and
+	 * preserialize the arguments into a send buffer.
+	 */
+	if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
+		perror("Cannot create socket for broadcast rpc");
+		stat = RPC_CANTSEND;
+		goto done_broad;
+	}
+#ifdef SO_BROADCAST
+	if (setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &on, sizeof (on)) < 0) {
+		perror("Cannot set socket option SO_BROADCAST");
+		stat = RPC_CANTSEND;
+		goto done_broad;
+	}
+#endif /* def SO_BROADCAST */
+#ifdef FD_SETSIZE
+	FD_ZERO(&mask);
+	FD_SET(sock, &mask);
+#else
+	mask = (1 << sock);
+#endif /* def FD_SETSIZE */
+	nets = getbroadcastnets(addrs, sock, inbuf);
+	bzero((char *)&baddr, sizeof (baddr));
+	baddr.sin_family = AF_INET;
+	baddr.sin_port = htons(PMAPPORT);
+	baddr.sin_addr.s_addr = htonl(INADDR_ANY);
+/*	baddr.sin_addr.S_un.S_addr = htonl(INADDR_ANY); */
+	(void)gettimeofday(&t, (struct timezone *)0);
+	msg.rm_xid = xid = getpid() ^ t.tv_sec ^ t.tv_usec;
+	t.tv_usec = 0;
+	msg.rm_direction = CALL;
+	msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
+	msg.rm_call.cb_prog = PMAPPROG;
+	msg.rm_call.cb_vers = PMAPVERS;
+	msg.rm_call.cb_proc = PMAPPROC_CALLIT;
+	msg.rm_call.cb_cred = unix_auth->ah_cred;
+	msg.rm_call.cb_verf = unix_auth->ah_verf;
+	a.prog = prog;
+	a.vers = vers;
+	a.proc = proc;
+	a.xdr_args = xargs;
+	a.args_ptr = argsp;
+	r.port_ptr = &port;
+	r.xdr_results = xresults;
+	r.results_ptr = resultsp;
+	xdrmem_create(xdrs, outbuf, MAX_BROADCAST_SIZE, XDR_ENCODE);
+	if ((! xdr_callmsg(xdrs, &msg)) || (! xdr_rmtcall_args(xdrs, &a))) {
+		stat = RPC_CANTENCODEARGS;
+		goto done_broad;
+	}
+	outlen = (int)xdr_getpos(xdrs);
+	xdr_destroy(xdrs);
+	/*
+	 * Basic loop: broadcast a packet and wait a while for response(s).
+	 * The response timeout grows larger per iteration.
+	 */
+	for (t.tv_sec = 4; t.tv_sec <= 14; t.tv_sec += 2) {
+		for (i = 0; i < nets; i++) {
+			baddr.sin_addr = addrs[i];
+			if (sendto(sock, outbuf, outlen, 0,
+				(struct sockaddr *)&baddr,
+				sizeof (struct sockaddr)) != outlen) {
+				perror("Cannot send broadcast packet");
+				stat = RPC_CANTSEND;
+				goto done_broad;
+			}
+		}
+		if (eachresult == NULL) {
+			stat = RPC_SUCCESS;
+			goto done_broad;
+		}
+	recv_again:
+		msg.acpted_rply.ar_verf = _null_auth;
+		msg.acpted_rply.ar_results.where = (caddr_t)&r;
+                msg.acpted_rply.ar_results.proc = xdr_rmtcallres;
+		readfds = mask;
+		switch (select(_rpc_dtablesize(), &readfds, (fd_set *)NULL,
+			       (fd_set *)NULL, &t)) {
+
+		case 0:  /* timed out */
+			stat = RPC_TIMEDOUT;
+			continue;
+
+		case -1:  /* some kind of error */
+			if (errno == EINTR)
+				goto recv_again;
+			perror("Broadcast select problem");
+			stat = RPC_CANTRECV;
+			goto done_broad;
+
+		}  /* end of select results switch */
+	try_again:
+		fromlen = sizeof(struct sockaddr);
+		inlen = recvfrom(sock, inbuf, UDPMSGSIZE, 0,
+			(struct sockaddr *)&raddr, &fromlen);
+		if (inlen < 0) {
+			if (errno == EINTR)
+				goto try_again;
+			perror("Cannot receive reply to broadcast");
+			stat = RPC_CANTRECV;
+			goto done_broad;
+		}
+		if (inlen < sizeof(u_long))
+			goto recv_again;
+		/*
+		 * see if reply transaction id matches sent id.
+		 * If so, decode the results.
+		 */
+		xdrmem_create(xdrs, inbuf, (u_int)inlen, XDR_DECODE);
+		if (xdr_replymsg(xdrs, &msg)) {
+			if ((msg.rm_xid == xid) &&
+				(msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
+				(msg.acpted_rply.ar_stat == SUCCESS)) {
+				raddr.sin_port = htons((u_short)port);
+				done = (*eachresult)(resultsp, &raddr);
+			}
+			/* otherwise, we just ignore the errors ... */
+		} else {
+#ifdef notdef
+			/* some kind of deserialization problem ... */
+			if (msg.rm_xid == xid)
+				fprintf(stderr, "Broadcast deserialization problem");
+			/* otherwise, just random garbage */
+#endif
+		}
+		xdrs->x_op = XDR_FREE;
+		msg.acpted_rply.ar_results.proc = xdr_void;
+		(void)xdr_replymsg(xdrs, &msg);
+		(void)(*xresults)(xdrs, resultsp);
+		xdr_destroy(xdrs);
+		if (done) {
+			stat = RPC_SUCCESS;
+			goto done_broad;
+		} else {
+			goto recv_again;
+		}
+	}
+done_broad:
+	(void)close(sock);
+	AUTH_DESTROY(unix_auth);
+	return (stat);
+}
+
diff --git a/lib/libc/rpc/rpc.3 b/lib/libc/rpc/rpc.3
new file mode 100644
index 0000000..74501c3
--- /dev/null
+++ b/lib/libc/rpc/rpc.3
@@ -0,0 +1,1729 @@
+.\" @(#)rpc.3n	2.4 88/08/08 4.0 RPCSRC; from 1.19 88/06/24 SMI
+.TH RPC 3 "16 February 1988"
+.SH NAME
+rpc \- library routines for remote procedure calls
+.SH SYNOPSIS AND DESCRIPTION
+These routines allow C programs to make procedure
+calls on other machines across the network.
+First, the client calls a procedure to send a
+data packet to the server.
+Upon receipt of the packet, the server calls a dispatch routine
+to perform the requested service, and then sends back a
+reply.
+Finally, the procedure call returns to the client.
+.LP
+Routines that are used for Secure RPC (DES authentication) are described in
+.BR rpc_secure (3N).
+Secure RPC can be used only if DES encryption is available.
+.LP
+.ft B
+.nf
+.sp .5
+#include <rpc/rpc.h>
+.fi
+.ft R
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+void
+auth_destroy(auth)
+\s-1AUTH\s0 *auth;
+.fi
+.ft R
+.IP
+A macro that destroys the authentication information associated with
+.IR auth .
+Destruction usually involves deallocation of private data
+structures. The use of
+.I auth
+is undefined after calling
+.BR auth_destroy(\|) .
+.br
+.if t .ne 6
+.LP
+.ft B
+.nf
+.sp .5
+\s-1AUTH\s0 *
+authnone_create(\|)
+.fi
+.ft R
+.IP
+Create and returns an
+.SM RPC
+authentication handle that passes nonusable authentication
+information with each remote procedure call. This is the
+default authentication used by
+.SM RPC.
+.if t .ne 10
+.LP
+.ft B
+.nf
+.sp .5
+\s-1AUTH\s0 *
+authunix_create(host, uid, gid, len, aup_gids)
+char *host;
+int uid, gid, len, *aup.gids;
+.fi
+.ft R
+.IP
+Create and return an
+.SM RPC
+authentication handle that contains
+.UX
+authentication information.
+The parameter
+.I host
+is the name of the machine on which the information was
+created;
+.I uid
+is the user's user
+.SM ID ;
+.I gid
+is the user's current group
+.SM ID ;
+.I len
+and
+.I aup_gids
+refer to a counted array of groups to which the user belongs.
+It is easy to impersonate a user.
+.br
+.if t .ne 5
+.LP
+.ft B
+.nf
+.sp .5
+\s-1AUTH\s0 *
+authunix_create_default(\|)
+.fi
+.ft R
+.IP
+Calls
+.B authunix_create(\|)
+with the appropriate parameters.
+.br
+.if t .ne 13
+.LP
+.ft B
+.nf
+.sp .5
+callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out)
+char *host;
+u_long prognum, versnum, procnum;
+char *in, *out;
+xdrproc_t inproc, outproc;
+.fi
+.ft R
+.IP
+Call the remote procedure associated with
+.IR prognum ,
+.IR versnum ,
+and
+.I procnum
+on the machine,
+.IR host .
+The parameter
+.I in
+is the address of the procedure's argument(s), and
+.I out
+is the address of where to place the result(s);
+.I inproc
+is used to encode the procedure's parameters, and
+.I outproc
+is used to decode the procedure's results.
+This routine returns zero if it succeeds, or the value of
+.B "enum clnt_stat"
+cast to an integer if it fails.
+The routine
+.B clnt_perrno(\|)
+is handy for translating failure statuses into messages.
+.IP
+Warning: calling remote procedures with this routine
+uses
+.SM UDP/IP
+as a transport; see
+.B clntudp_create(\|)
+for restrictions.
+You do not have control of timeouts or authentication using
+this routine.
+.br
+.if t .ne 16
+.LP
+.ft B
+.nf
+.sp .5
+enum clnt_stat
+clnt_broadcast(prognum, versnum, procnum, inproc, in, outproc, out, eachresult)
+u_long prognum, versnum, procnum;
+char *in, *out;
+xdrproc_t inproc, outproc;
+resultproc_t eachresult;
+.fi
+.ft R
+.IP
+Like
+.BR callrpc(\|) ,
+except the call message is broadcast to all locally
+connected broadcast nets. Each time it receives a
+response, this routine calls
+.BR eachresult(\|) ,
+whose form is:
+.IP
+.RS 1i
+.ft B
+.nf
+eachresult(out, addr)
+char *out;
+struct sockaddr_in *addr;
+.ft R
+.fi
+.RE
+.IP
+where
+.I out
+is the same as
+.I out
+passed to
+.BR clnt_broadcast(\|) ,
+except that the remote procedure's output is decoded there;
+.I addr
+points to the address of the machine that sent the results.
+If
+.B eachresult(\|)
+returns zero,
+.B clnt_broadcast(\|)
+waits for more replies; otherwise it returns with appropriate
+status.
+.IP
+Warning: broadcast sockets are limited in size to the
+maximum transfer unit of the data link. For ethernet,
+this value is 1500 bytes.
+.br
+.if t .ne 13
+.LP
+.ft B
+.nf
+.sp .5
+enum clnt_stat
+clnt_call(clnt, procnum, inproc, in, outproc, out, tout)
+\s-1CLIENT\s0 *clnt;
+u_long
+procnum;
+xdrproc_t inproc, outproc;
+char *in, *out;
+struct timeval tout;
+.fi
+.ft R
+.IP
+A macro that calls the remote procedure
+.I procnum
+associated with the client handle,
+.IR clnt ,
+which is obtained with an
+.SM RPC
+client creation routine such as
+.BR clnt_create(\|) .
+The parameter
+.I in
+is the address of the procedure's argument(s), and
+.I out
+is the address of where to place the result(s);
+.I inproc
+is used to encode the procedure's parameters, and
+.I outproc
+is used to decode the procedure's results;
+.I tout
+is the time allowed for results to come back.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+clnt_destroy(clnt)
+\s-1CLIENT\s0 *clnt;
+.fi
+.ft R
+.IP
+A macro that destroys the client's
+.SM RPC
+handle. Destruction usually involves deallocation
+of private data structures, including
+.I clnt
+itself.  Use of
+.I clnt
+is undefined after calling
+.BR clnt_destroy(\|) .
+If the
+.SM RPC
+library opened the associated socket, it will close it also.
+Otherwise, the socket remains open.
+.br
+.if t .ne 10
+.LP
+.ft B
+.nf
+.sp .5
+\s-1CLIENT\s0 *
+clnt_create(host, prog, vers, proto)
+char *host;
+u_long prog, vers;
+char *proto;
+.fi
+.ft R
+.IP
+Generic client creation routine.
+.I host
+identifies the name of the remote host where the server
+is located.
+.I proto
+indicates which kind of transport protocol to use. The
+currently supported values for this field are \(lqudp\(rq
+and \(lqtcp\(rq.
+Default timeouts are set, but can be modified using
+.BR clnt_control(\|) .
+.IP
+Warning: Using
+.SM UDP
+has its shortcomings.  Since
+.SM UDP\s0-based
+.SM RPC
+messages can only hold up to 8 Kbytes of encoded data,
+this transport cannot be used for procedures that take
+large arguments or return huge results.
+.br
+.if t .ne 10
+.LP
+.ft B
+.nf
+.sp .5
+bool_t
+clnt_control(cl, req, info)
+\s-1CLIENT\s0 *cl;
+char *info;
+.fi
+.ft R
+.IP
+A macro used to change or retrieve various information
+about a client object.
+.I req
+indicates the type of operation, and
+.I info
+is a pointer to the information. For both
+.SM UDP
+and
+.SM TCP\s0,
+the supported values of
+.I req
+and their argument types and what they do are:
+.IP
+.nf
+.ta +2.0i +2.0i +2.0i
+.SM CLSET_TIMEOUT\s0	struct timeval	set total timeout
+.SM CLGET_TIMEOUT\s0	struct timeval	get total timeout
+.fi
+.IP
+Note: if you set the timeout using
+.BR clnt_control(\|) ,
+the timeout parameter passed to
+.B clnt_call(\|)
+will be ignored in all future calls.
+.IP
+.nf
+.SM CLGET_SERVER_ADDR\s0	struct sockaddr_in 	get server's address
+.fi
+.br
+.IP
+The following operations are valid for
+.SM UDP
+only:
+.IP
+.nf
+.ta +2.0i ; +2.0i ; +2.0i
+.SM CLSET_RETRY_TIMEOUT\s0		struct timeval	set the retry timeout
+.SM CLGET_RETRY_TIMEOUT\s0		struct timeval	get the retry timeout
+.fi
+.br
+.IP
+The retry timeout is the time that
+.SM "UDP RPC"
+waits for the server to reply before
+retransmitting the request.
+.br
+.if t .ne 10
+.LP
+.ft B
+.nf
+.sp .5
+clnt_freeres(clnt, outproc, out)
+\s-1CLIENT\s0 *clnt;
+xdrproc_t outproc;
+char *out;
+.fi
+.ft R
+.IP
+A macro that frees any data allocated by the
+.SM RPC/XDR
+system when it decoded the results of an
+.SM RPC
+call.  The
+parameter
+.I out
+is the address of the results, and
+.I outproc
+is the
+.SM XDR
+routine describing the results.
+This routine returns one if the results were successfully
+freed,
+and zero otherwise.
+.br
+.if t .ne 6
+.LP
+.ft B
+.nf
+.sp .5
+void
+clnt_geterr(clnt, errp)
+\s-1CLIENT\s0 *clnt;
+struct rpc_err *errp;
+.fi
+.ft R
+.IP
+A macro that copies the error structure out of the client
+handle
+to the structure at address
+.IR errp .
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+void
+clnt_pcreateerror(s)
+char *s;
+.fi
+.ft R
+.IP
+Print a message to standard error indicating
+why a client
+.SM RPC
+handle could not be created.
+The message is prepended with string
+.I s
+and a colon.
+Used when a
+.BR clnt_create(\|) ,
+.BR clntraw_create(\|) ,
+.BR clnttcp_create(\|) ,
+or
+.B clntudp_create(\|)
+call fails.
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+void
+clnt_perrno(stat)
+enum clnt_stat stat;
+.fi
+.ft R
+.IP
+Print a message to standard error corresponding
+to the condition indicated by
+.IR stat .
+Used after
+.BR callrpc(\|) .
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+clnt_perror(clnt, s)
+\s-1CLIENT\s0 *clnt;
+char *s;
+.fi
+.ft R
+.IP
+Print a message to standard error indicating why an
+.SM RPC
+call failed;
+.I clnt
+is the handle used to do the call.
+The message is prepended with string
+.I s
+and a colon.
+Used after
+.BR clnt_call(\|) .
+.br
+.if t .ne 9
+.LP
+.ft B
+.nf
+.sp .5
+char *
+clnt_spcreateerror
+char *s;
+.fi
+.ft R
+.IP
+Like
+.BR clnt_pcreateerror(\|) ,
+except that it returns a string
+instead of printing to the standard error.
+.IP
+Bugs: returns pointer to static data that is overwritten
+on each call.
+.br
+.if t .ne 9
+.LP
+.ft B
+.nf
+.sp .5
+char *
+clnt_sperrno(stat)
+enum clnt_stat stat;
+.fi
+.ft R
+.IP
+Take the same arguments as
+.BR clnt_perrno(\|) ,
+but instead of sending a message to the standard error
+indicating why an
+.SM RPC
+call failed, return a pointer to a string which contains
+the message.  The string ends with a
+.SM NEWLINE\s0.
+.IP
+.B clnt_sperrno(\|)
+is used instead of
+.B clnt_perrno(\|)
+if the program does not have a standard error (as a program
+running as a server quite likely does not), or if the
+programmer
+does not want the message to be output with
+.BR printf ,
+or if a message format different than that supported by
+.B clnt_perrno(\|)
+is to be used.
+Note: unlike
+.B clnt_sperror(\|)
+and
+.BR clnt_spcreaterror(\|) ,
+.B clnt_sperrno(\|)
+returns pointer to static data, but the
+result will not get overwritten on each call.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+char *
+clnt_sperror(rpch, s)
+\s-1CLIENT\s0 *rpch;
+char *s;
+.fi
+.ft R
+.IP
+Like
+.BR clnt_perror(\|) ,
+except that (like
+.BR clnt_sperrno(\|) )
+it returns a string instead of printing to standard error.
+.IP
+Bugs: returns pointer to static data that is overwritten
+on each call.
+.br
+.if t .ne 10
+.LP
+.ft B
+.nf
+.sp .5
+\s-1CLIENT\s0 *
+clntraw_create(prognum, versnum)
+u_long prognum, versnum;
+.fi
+.ft R
+.IP
+This routine creates a toy
+.SM RPC
+client for the remote program
+.IR prognum ,
+version
+.IR versnum .
+The transport used to pass messages to the service is
+actually a buffer within the process's address space, so the
+corresponding
+.SM RPC
+server should live in the same address space; see
+.BR svcraw_create(\|) .
+This allows simulation of
+.SM RPC
+and acquisition of
+.SM RPC
+overheads, such as round trip times, without any
+kernel interference. This routine returns
+.SM NULL
+if it fails.
+.br
+.if t .ne 15
+.LP
+.ft B
+.nf
+.sp .5
+\s-1CLIENT\s0 *
+clnttcp_create(addr, prognum, versnum, sockp, sendsz, recvsz)
+struct sockaddr_in *addr;
+u_long prognum, versnum;
+int *sockp;
+u_int sendsz, recvsz;
+.fi
+.ft R
+.IP
+This routine creates an
+.SM RPC
+client for the remote program
+.IR prognum ,
+version
+.IR versnum ;
+the client uses
+.SM TCP/IP
+as a transport. The remote program is located at Internet
+address
+.IR *addr .
+If
+.\"The following in-line font conversion is necessary for the hyphen indicator
+\fB\%addr\->sin_port\fR
+is zero, then it is set to the actual port that the remote
+program is listening on (the remote
+.B portmap
+service is consulted for this information). The parameter
+.I sockp
+is a socket; if it is
+.BR \s-1RPC_ANYSOCK\s0 ,
+then this routine opens a new one and sets
+.IR sockp .
+Since
+.SM TCP\s0-based
+.SM RPC
+uses buffered
+.SM I/O ,
+the user may specify the size of the send and receive buffers
+with the parameters
+.I sendsz
+and
+.IR recvsz ;
+values of zero choose suitable defaults.
+This routine returns
+.SM NULL
+if it fails.
+.br
+.if t .ne 15
+.LP
+.ft B
+.nf
+.sp .5
+\s-1CLIENT\s0 *
+clntudp_create(addr, prognum, versnum, wait, sockp)
+struct sockaddr_in *addr;
+u_long prognum, versnum;
+struct timeval wait;
+int *sockp;
+.fi
+.ft R
+.IP
+This routine creates an
+.SM RPC
+client for the remote program
+.IR prognum ,
+version
+.IR versnum ;
+the client uses
+.SM UDP/IP
+as a transport. The remote program is located at Internet
+address
+.IR addr .
+If
+\fB\%addr\->sin_port\fR
+is zero, then it is set to actual port that the remote
+program is listening on (the remote
+.B portmap
+service is consulted for this information). The parameter
+.I sockp
+is a socket; if it is
+.BR \s-1RPC_ANYSOCK\s0 ,
+then this routine opens a new one and sets
+.IR sockp .
+The
+.SM UDP
+transport resends the call message in intervals of
+.B wait
+time until a response is received or until the call times
+out.
+The total time for the call to time out is specified by
+.BR clnt_call(\|) .
+.IP
+Warning: since
+.SM UDP\s0-based
+.SM RPC
+messages can only hold up to 8 Kbytes
+of encoded data, this transport cannot be used for procedures
+that take large arguments or return huge results.
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+\s-1CLIENT\s0 *
+clntudp_bufcreate(addr, prognum, versnum, wait, sockp, sendsize, recosize)
+struct sockaddr_in *addr;
+u_long prognum, versnum;
+struct timeval wait;
+int *sockp;
+unsigned int sendsize;
+unsigned int recosize;
+.fi
+.ft R
+.IP
+This routine creates an
+.SM RPC
+client for the remote program
+.IR prognum ,
+on
+.IR versnum ;
+the client uses
+.SM UDP/IP
+as a transport. The remote program is located at Internet
+address
+.IR addr .
+If
+\fB\%addr\->sin_port\fR
+is zero, then it is set to actual port that the remote
+program is listening on (the remote
+.B portmap
+service is consulted for this information). The parameter
+.I sockp
+is a socket; if it is
+.BR \s-1RPC_ANYSOCK\s0 ,
+then this routine opens a new one and sets
+.BR sockp .
+The
+.SM UDP
+transport resends the call message in intervals of
+.B wait
+time until a response is received or until the call times
+out.
+The total time for the call to time out is specified by
+.BR clnt_call(\|) .
+.IP
+This allows the user to specify the maximum packet size for sending and receiving 
+.SM UDP\s0-based
+.SM RPC
+messages.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+void
+get_myaddress(addr)
+struct sockaddr_in *addr;
+.fi
+.ft R
+.IP
+Stuff the machine's
+.SM IP
+address into
+.IR *addr ,
+without consulting the library routines that deal with
+.BR /etc/hosts .
+The port number is always set to
+.BR htons(\s-1PMAPPORT\s0) .
+.br
+.if t .ne 10
+.LP
+.ft B
+.nf
+.sp .5
+struct pmaplist *
+pmap_getmaps(addr)
+struct sockaddr_in *addr;
+.fi
+.ft R
+.IP
+A user interface to the
+.B portmap
+service, which returns a list of the current
+.SM RPC
+program-to-port mappings
+on the host located at
+.SM IP
+address
+.IR *addr .
+This routine can return
+.SM NULL .
+The command
+.RB ` "rpcinfo \-p" '
+uses this routine.
+.br
+.if t .ne 12
+.LP
+.ft B
+.nf
+.sp .5
+u_short
+pmap_getport(addr, prognum, versnum, protocol)
+struct sockaddr_in *addr;
+u_long prognum, versnum, protocol;
+.fi
+.ft R
+.IP
+A user interface to the
+.B portmap
+service, which returns the port number
+on which waits a service that supports program number
+.IR prognum ,
+version
+.IR versnum ,
+and speaks the transport protocol associated with
+.IR protocol .
+The value of
+.I protocol
+is most likely
+.B
+.SM IPPROTO_UDP
+or 
+.BR \s-1IPPROTO_TCP\s0 .
+A return value of zero means that the mapping does not exist
+or that
+the
+.SM RPC
+system failured to contact the remote
+.B portmap
+service.  In the latter case, the global variable
+.B rpc_createerr(\|)
+contains the
+.SM RPC
+status.
+.br
+.if t .ne 15
+.LP
+.ft B
+.nf
+.sp .5
+enum clnt_stat
+pmap_rmtcall(addr, prognum, versnum, procnum, inproc, in, outproc, out, tout, portp)
+struct sockaddr_in *addr;
+u_long prognum, versnum, procnum;
+char *in, *out;
+xdrproc_t inproc, outproc;
+struct timeval tout;
+u_long *portp;
+.fi
+.ft R
+.IP
+A user interface to the
+.B portmap
+service, which instructs
+.B portmap
+on the host at
+.SM IP
+address
+.I *addr
+to make an
+.SM RPC
+call on your behalf to a procedure on that host.
+The parameter
+.I *portp
+will be modified to the program's port number if the
+procedure
+succeeds. The definitions of other parameters are discussed
+in
+.B callrpc(\|)
+and
+.BR clnt_call(\|) .
+This procedure should be used for a \(lqping\(rq and nothing
+else.
+See also
+.BR clnt_broadcast(\|) .
+.br
+.if t .ne 9
+.LP
+.ft B
+.nf
+.sp .5
+pmap_set(prognum, versnum, protocol, port)
+u_long prognum, versnum, protocol;
+u_short port;
+.fi
+.ft R
+.IP
+A user interface to the
+.B portmap
+service, which establishes a mapping between the triple
+.RI [ prognum , versnum , protocol\fR]
+and
+.I port
+on the machine's
+.B portmap
+service. The value of
+.I protocol
+is most likely
+.B
+.SM IPPROTO_UDP
+or 
+.BR \s-1IPPROTO_TCP\s0 .
+This routine returns one if it succeeds, zero otherwise.
+Automatically done by
+.BR svc_register(\|) .
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+pmap_unset(prognum, versnum)
+u_long prognum, versnum;
+.fi
+.ft R
+.IP
+A user interface to the
+.B portmap
+service, which destroys all mapping between the triple
+.RI [ prognum , versnum , *\fR]
+and
+.B ports
+on the machine's
+.B portmap
+service. This routine returns one if it succeeds, zero
+otherwise.
+.br
+.if t .ne 15
+.LP
+.ft B
+.nf
+.sp .5
+registerrpc(prognum, versnum, procnum, procname, inproc, outproc)
+u_long prognum, versnum, procnum;
+char *(*procname) (\|) ;
+xdrproc_t inproc, outproc;
+.fi
+.ft R
+.IP
+Register procedure
+.I procname
+with the
+.SM RPC
+service package.  If a request arrives for program
+.IR prognum ,
+version
+.IR versnum ,
+and procedure
+.IR procnum ,
+.I procname
+is called with a pointer to its parameter(s);
+.I progname
+should return a pointer to its static result(s);
+.I inproc
+is used to decode the parameters while
+.I outproc
+is used to encode the results.
+This routine returns zero if the registration succeeded, \-1
+otherwise.
+.IP
+Warning: remote procedures registered in this form
+are accessed using the
+.SM UDP/IP
+transport; see
+.B svcudp_create(\|)
+for restrictions.
+.br
+.if t .ne 5
+.LP
+.ft B
+.nf
+.sp .5
+struct rpc_createerr     rpc_createerr;
+.fi
+.ft R
+.IP
+A global variable whose value is set by any
+.SM RPC
+client creation routine
+that does not succeed.  Use the routine
+.B clnt_pcreateerror(\|)
+to print the reason why.
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+svc_destroy(xprt)
+\s-1SVCXPRT\s0 *
+xprt;
+.fi
+.ft R
+.IP
+A macro that destroys the
+.SM RPC
+service transport handle,
+.IR xprt .
+Destruction usually involves deallocation
+of private data structures, including
+.I xprt
+itself.  Use of
+.I xprt
+is undefined after calling this routine.
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+fd_set svc_fdset;
+.fi
+.ft R
+.IP
+A global variable reflecting the
+.SM RPC
+service side's
+read file descriptor bit mask; it is suitable as a parameter
+to the
+.B select
+system call. This is only of interest
+if a service implementor does not call
+.BR svc_run(\|) ,
+but rather does his own asynchronous event processing.
+This variable is read-only (do not pass its address to
+.BR select !),
+yet it may change after calls to
+.B svc_getreqset(\|)
+or any creation routines.
+.br
+.if t .ne 6
+.LP
+.ft B
+.nf
+.sp .5
+int svc_fds;
+.fi
+.ft R
+.IP
+Similar to
+.BR svc_fedset(\|) ,
+but limited to 32 descriptors. This
+interface is obsoleted by
+.BR svc_fdset(\|) .
+.br
+.if t .ne 9
+.LP
+.ft B
+.nf
+.sp .5
+svc_freeargs(xprt, inproc, in)
+\s-1SVCXPRT\s0 *xprt;
+xdrproc_t inproc;
+char *in;
+.fi
+.ft R
+.IP
+A macro that frees any data allocated by the
+.SM RPC/XDR
+system when it decoded the arguments to a service procedure
+using
+.BR svc_getargs(\|) .
+This routine returns 1 if the results were successfully
+freed,
+and zero otherwise.
+.br
+.if t .ne 10
+.LP
+.ft B
+.nf
+.sp .5
+svc_getargs(xprt, inproc, in)
+\s-1SVCXPRT\s0 *xprt;
+xdrproc_t inproc;
+char *in;
+.fi
+.ft R
+.IP
+A macro that decodes the arguments of an
+.SM RPC
+request
+associated with the
+.SM RPC
+service transport handle,
+.IR xprt .
+The parameter
+.I in
+is the address where the arguments will be placed;
+.I inproc
+is the
+.SM XDR
+routine used to decode the arguments.
+This routine returns one if decoding succeeds, and zero
+otherwise.
+.br
+.if t .ne 9
+.LP
+.ft B
+.nf
+.sp .5
+struct sockaddr_in *
+svc_getcaller(xprt)
+\s-1SVCXPRT\s0 *xprt;
+.fi
+.ft R
+.IP
+The approved way of getting the network address of the caller
+of a procedure associated with the
+.SM RPC
+service transport handle,
+.IR xprt .
+.br
+.if t .ne 9
+.LP
+.ft B
+.nf
+.sp .5
+svc_getreqset(rdfds)
+fd_set *rdfds;
+.fi
+.ft R
+.IP
+This routine is only of interest if a service implementor
+does not call
+.BR svc_run(\|) ,
+but instead implements custom asynchronous event processing.
+It is called when the
+.B select
+system call has determined that an
+.SM RPC
+request has arrived on some
+.SM RPC
+.B socket(s) ;
+.I rdfds
+is the resultant read file descriptor bit mask.
+The routine returns when all sockets associated with the
+value of
+.I rdfds
+have been serviced.
+.br
+.if t .ne 6
+.LP
+.ft B
+.nf
+.sp .5
+svc_getreq(rdfds)
+int rdfds;
+.fi
+.ft R
+.IP
+Similar to
+.BR svc_getreqset(\|) ,
+but limited to 32 descriptors. This interface is obsoleted by
+.BR svc_getreqset(\|) .
+.br
+.if t .ne 17
+.LP
+.ft B
+.nf
+.sp .5
+svc_register(xprt, prognum, versnum, dispatch, protocol)
+\s-1SVCXPRT\s0 *xprt;
+u_long prognum, versnum;
+void (*dispatch) (\|);
+u_long protocol;
+.fi
+.ft R
+.IP
+Associates
+.I prognum
+and
+.I versnum
+with the service dispatch procedure,
+.IR dispatch .
+If
+.I protocol
+is zero, the service is not registered with the
+.B portmap
+service.  If
+.I protocol
+is non-zero, then a mapping of the triple
+.RI [ prognum , versnum , protocol\fR]
+to
+\fB\%xprt\->xp_port\fR
+is established with the local
+.B portmap
+service (generally
+.I protocol
+is zero,
+.B
+.SM IPPROTO_UDP
+or 
+.B
+.SM IPPROTO_TCP
+).
+The procedure
+.I dispatch
+has the following form:
+.RS 1i
+.ft B
+.nf
+dispatch(request, xprt)
+struct svc_req *request;
+\s-1SVCXPRT\s0 *xprt;
+.ft R
+.fi
+.RE
+.IP
+The
+.B svc_register(\|)
+routine returns one if it succeeds, and zero otherwise.
+.br
+.if t .ne 6
+.LP
+.ft B
+.nf
+.sp .5
+svc_run(\|)
+.fi
+.ft R
+.IP
+This routine never returns. It waits for
+.SM RPC
+requests to arrive, and calls the appropriate service
+procedure using
+.B svc_getreq(\|)
+when one arrives. This procedure is usually waiting for a
+.B select(\|)
+system call to return.
+.br
+.if t .ne 9
+.LP
+.ft B
+.nf
+.sp .5
+svc_sendreply(xprt, outproc, out)
+\s-1SVCXPRT\s0 *xprt;
+xdrproc_t outproc;
+char *out;
+.fi
+.ft R
+.IP
+Called by an
+.SM RPC
+service's dispatch routine to send the results of a
+remote procedure call.  The parameter
+.I xprt
+is the request's associated transport handle;
+.I outproc
+is the
+.SM XDR
+routine which is used to encode the results; and
+.I out
+is the address of the results.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+void
+svc_unregister(prognum, versnum)
+u_long prognum, versnum;
+.fi
+.ft R
+.IP
+Remove all mapping of the double
+.RI [ prognum , versnum ]
+to dispatch routines, and of the triple
+.RI [ prognum , versnum , *\fR]
+to port number.
+.br
+.if t .ne 9
+.LP
+.ft B
+.nf
+.sp .5
+void
+svcerr_auth(xprt, why)
+\s-1SVCXPRT\s0 *xprt;
+enum auth_stat why;
+.fi
+.ft R
+.IP
+Called by a service dispatch routine that refuses to perform
+a remote procedure call due to an authentication error.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+void
+svcerr_decode(xprt)
+\s-1SVCXPRT\s0 *xprt;
+.fi
+.ft R
+.IP
+Called by a service dispatch routine that cannot successfully
+decode its parameters. See also
+.BR svc_getargs(\|) .
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+void
+svcerr_noproc(xprt)
+\s-1SVCXPRT\s0 *xprt;
+.fi
+.ft R
+.IP
+Called by a service dispatch routine that does not implement
+the procedure number that the caller requests.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+void
+svcerr_noprog(xprt)
+\s-1SVCXPRT\s0 *xprt;
+.fi
+.ft R
+.IP
+Called when the desired program is not registered with the
+.SM RPC
+package. Service implementors usually do not need this routine.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+void
+svcerr_progvers(xprt)
+\s-1SVCXPRT\s0 *xprt;
+.fi
+.ft R
+.IP
+Called when the desired version of a program is not registered
+with the
+.SM RPC
+package. Service implementors usually do not need this routine.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+void
+svcerr_systemerr(xprt)
+\s-1SVCXPRT\s0 *xprt;
+.fi
+.ft R
+.IP
+Called by a service dispatch routine when it detects a system
+error
+not covered by any particular protocol.
+For example, if a service can no longer allocate storage,
+it may call this routine.
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+void
+svcerr_weakauth(xprt)
+\s-1SVCXPRT\s0 *xprt;
+.fi
+.ft R
+.IP
+Called by a service dispatch routine that refuses to perform
+a remote procedure call due to insufficient
+authentication parameters.  The routine calls
+.BR "svcerr_auth(xprt, \s-1AUTH_TOOWEAK\s0)" .
+.br
+.if t .ne 11
+.LP
+.ft B
+.nf
+.sp .5
+\s-1SVCXPRT\s0 *
+svcraw_create(\|)
+.fi
+.ft R
+.IP
+This routine creates a toy
+.SM RPC
+service transport, to which it returns a pointer.  The
+transport
+is really a buffer within the process's address space,
+so the corresponding
+.SM RPC
+client should live in the same
+address space;
+see
+.BR clntraw_create(\|) .
+This routine allows simulation of
+.SM RPC
+and acquisition of
+.SM RPC
+overheads (such as round trip times), without any kernel
+interference.
+This routine returns
+.SM NULL
+if it fails.
+.br
+.if t .ne 11
+.LP
+.ft B
+.nf
+.sp .5
+\s-1SVCXPRT\s0 *
+svctcp_create(sock, send_buf_size, recv_buf_size)
+int sock;
+u_int send_buf_size, recv_buf_size;
+.fi
+.ft R
+.IP
+This routine creates a
+.SM TCP/IP\s0-based
+.SM RPC
+service transport, to which it returns a pointer.
+The transport is associated with the socket
+.IR sock ,
+which may be
+.BR \s-1RPC_ANYSOCK\s0 ,
+in which case a new socket is created.
+If the socket is not bound to a local
+.SM TCP
+port, then this routine binds it to an arbitrary port.  Upon
+completion,
+\fB\%xprt\->xp_sock\fR
+is the transport's socket descriptor, and
+\fB\%xprt\->xp_port\fR
+is the transport's port number.
+This routine returns
+.SM NULL
+if it fails. Since
+.SM TCP\s0-based
+.SM RPC
+uses buffered
+.SM I/O ,
+users may specify the size of buffers; values of zero
+choose suitable defaults.
+.br
+.if t .ne 11
+.LP
+.ft B
+.nf
+.sp .5
+\s-1SVCXPRT\s0 *
+svcfd_create(fd, sendsize, recvsize)
+int fd;
+u_int sendsize;
+u_int recvsize;
+.fi
+.ft R
+.IP
+Create a service on top of any open descriptor. Typically,
+this
+descriptor is a connected socket for a stream protocol such
+as
+.SM TCP\s0.
+.I sendsize
+and
+.I recvsize
+indicate sizes for the send and receive buffers.  If they are
+zero, a reasonable default is chosen.
+.br
+.if t .ne 10
+.LP
+.ft B
+.nf
+.sp .5
+\s-1SVCXPRT\s0 *
+svcudp_bufcreate(sock, sendsize, recosize)
+int sock;
+.fi
+.ft R
+.IP
+This routine creates a
+.SM UDP/IP\s0-based
+.SM RPC
+service transport, to which it returns a pointer.
+The transport is associated with the socket
+.IR sock ,
+which may be
+.B \s-1RPC_ANYSOCK\s0 ,
+in which case a new socket is created.
+If the socket is not bound to a local
+.SM UDP
+port, then this routine binds it to an arbitrary port. Upon
+completion,
+\fB\%xprt\->xp_sock\fR
+is the transport's socket descriptor, and
+\fB\%xprt\->xp_port\fR
+is the transport's port number.
+This routine returns
+.SM NULL
+if it fails.
+.IP
+This allows the user to specify the maximun packet size for sending and 
+receiving
+.SM UDP\s0-based
+.SM RPC messages.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+xdr_accepted_reply(xdrs, ar)
+\s-1XDR\s0 *xdrs;
+struct accepted_reply *ar;
+.fi
+.ft R
+.IP
+Used for encoding
+.SM RPC
+reply messages. This routine is useful for users who
+wish to generate
+\s-1RPC\s0-style
+messages without using the
+.SM RPC
+package.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+xdr_authunix_parms(xdrs, aupp)
+\s-1XDR\s0 *xdrs;
+struct authunix_parms *aupp;
+.fi
+.ft R
+.IP
+Used for describing
+.SM UNIX
+credentials. This routine is useful for users
+who wish to generate these credentials without using the
+.SM RPC
+authentication package.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+void
+xdr_callhdr(xdrs, chdr)
+\s-1XDR\s0 *xdrs;
+struct rpc_msg *chdr;
+.fi
+.ft R
+.IP
+Used for describing
+.SM RPC
+call header messages.
+This routine is useful for users who wish to generate
+.SM RPC\s0-style
+messages without using the
+.SM RPC
+package.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+xdr_callmsg(xdrs, cmsg)
+\s-1XDR\s0 *xdrs;
+struct rpc_msg *cmsg;
+.fi
+.ft R
+.IP
+Used for describing
+.SM RPC
+call messages.
+This routine is useful for users who wish to generate
+.SM RPC\s0-style
+messages without using the
+.SM RPC
+package.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+xdr_opaque_auth(xdrs, ap)
+\s-1XDR\s0 *xdrs;
+struct opaque_auth *ap;
+.fi
+.ft R
+.IP
+Used for describing
+.SM RPC
+authentication information messages.
+This routine is useful for users who wish to generate
+.SM RPC\s0-style
+messages without using the
+.SM RPC
+package.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+xdr_pmap(xdrs, regs)
+\s-1XDR\s0 *xdrs;
+struct pmap *regs;
+.fi
+.ft R
+.IP
+Used for describing parameters to various
+.B portmap
+procedures, externally.
+This routine is useful for users who wish to generate
+these parameters without using the
+.B pmap
+interface.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+xdr_pmaplist(xdrs, rp)
+\s-1XDR\s0 *xdrs;
+struct pmaplist **rp;
+.fi
+.ft R
+.IP
+Used for describing a list of port mappings, externally.
+This routine is useful for users who wish to generate
+these parameters without using the
+.B pmap
+interface.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+xdr_rejected_reply(xdrs, rr)
+\s-1XDR\s0 *xdrs;
+struct rejected_reply *rr;
+.fi
+.ft R
+.IP
+Used for describing
+.SM RPC
+reply messages.
+This routine is useful for users who wish to generate
+.SM RPC\s0-style
+messages without using the
+.SM RPC
+package.
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+xdr_replymsg(xdrs, rmsg)
+\s-1XDR\s0 *xdrs;
+struct rpc_msg *rmsg;
+.fi
+.ft R
+.IP
+Used for describing
+.SM RPC
+reply messages.
+This routine is useful for users who wish to generate
+.SM RPC
+style messages without using the
+.SM RPC
+package.
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+void
+xprt_register(xprt)
+\s-1SVCXPRT\s0 *xprt;
+.fi
+.ft R
+.IP
+After
+.SM RPC
+service transport handles are created,
+they should register themselves with the
+.SM RPC
+service package.
+This routine modifies the global variable
+.BR svc_fds(\|) .
+Service implementors usually do not need this routine.
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+void
+xprt_unregister(xprt)
+\s-1SVCXPRT\s0 *xprt;
+.fi
+.ft R
+.IP
+Before an
+.SM RPC
+service transport handle is destroyed,
+it should unregister itself with the
+.SM RPC
+service package.
+This routine modifies the global variable
+.BR svc_fds(\|) .
+Service implementors usually do not need this routine.
+.SH SEE ALSO
+.BR rpc_secure (3N),
+.BR xdr (3)
+.br
+The following manuals:
+.RS
+.ft I
+Remote Procedure Calls: Protocol Specification
+.br
+Remote Procedure Call Programming Guide
+.br
+rpcgen Programming Guide
+.br
+.ft R
+.RE
+.IR "\s-1RPC\s0: Remote Procedure Call Protocol Specification" ,
+.SM RFC1050, Sun Microsystems, Inc.,
+.SM USC-ISI\s0.
+
diff --git a/lib/libc/rpc/rpc.5 b/lib/libc/rpc/rpc.5
new file mode 100644
index 0000000..324ecb1
--- /dev/null
+++ b/lib/libc/rpc/rpc.5
@@ -0,0 +1,71 @@
+.\" @(#)rpc.5	2.2 88/08/03 4.0 RPCSRC; from 1.4 87/11/27 SMI;
+.TH RPC 5  "26 September 1985"
+.SH NAME
+rpc \- rpc program number data base
+.SH SYNOPSIS
+.B /etc/rpc
+.SH DESCRIPTION
+The
+.I rpc
+file contains user readable names that
+can be used in place of rpc program numbers.
+Each line has the following information:
+.HP 10
+name of server for the rpc program
+.br
+.ns
+.HP 10
+rpc program number
+.br
+.ns
+.HP 10
+aliases
+.LP
+Items are separated by any number of blanks and/or
+tab characters.
+A ``#'' indicates the beginning of a comment; characters up to the end of
+the line are not interpreted by routines which search the file.
+.LP
+Here is an example of the \fI/etc/rpc\fP file from the Sun RPC Source
+distribution.
+.nf
+.ta 1.5i +0.5i +1.0i +1.0i
+#
+# rpc 88/08/01 4.0 RPCSRC; from 1.12   88/02/07 SMI
+#
+portmapper		100000	portmap sunrpc
+rstatd		100001	rstat rstat_svc rup perfmeter
+rusersd		100002	rusers
+nfs		100003	nfsprog
+ypserv		100004	ypprog
+mountd		100005	mount showmount
+ypbind		100007
+walld		100008	rwall shutdown
+yppasswdd		100009	yppasswd
+etherstatd		100010	etherstat
+rquotad		100011	rquotaprog quota rquota
+sprayd		100012	spray
+3270_mapper		100013
+rje_mapper		100014
+selection_svc		100015	selnsvc
+database_svc		100016
+rexd		100017	rex
+alis		100018
+sched		100019
+llockmgr		100020
+nlockmgr		100021
+x25.inr		100022
+statmon		100023
+status		100024
+bootparam		100026
+ypupdated		100028	ypupdate
+keyserv		100029	keyserver
+tfsd		100037 
+nsed		100038
+nsemntd		100039
+.fi
+.DT
+.SH FILES
+/etc/rpc
+.SH "SEE ALSO"
+getrpcent(3N)
diff --git a/lib/libc/rpc/rpc_callmsg.c b/lib/libc/rpc/rpc_callmsg.c
new file mode 100644
index 0000000..54f103b
--- /dev/null
+++ b/lib/libc/rpc/rpc_callmsg.c
@@ -0,0 +1,193 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)rpc_callmsg.c 1.4 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)rpc_callmsg.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: rpc_callmsg.c,v 1.2 1995/05/30 05:41:28 rgrimes Exp $";
+#endif
+
+/*
+ * rpc_callmsg.c
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ *
+ */
+
+#include <sys/param.h>
+#include <stdlib.h>
+#include <string.h>
+#include <rpc/rpc.h>
+
+/*
+ * XDR a call message
+ */
+bool_t
+xdr_callmsg(xdrs, cmsg)
+	register XDR *xdrs;
+	register struct rpc_msg *cmsg;
+{
+	register long *buf;
+	register struct opaque_auth *oa;
+
+	if (xdrs->x_op == XDR_ENCODE) {
+		if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) {
+			return (FALSE);
+		}
+		if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) {
+			return (FALSE);
+		}
+		buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT
+			+ RNDUP(cmsg->rm_call.cb_cred.oa_length)
+			+ 2 * BYTES_PER_XDR_UNIT
+			+ RNDUP(cmsg->rm_call.cb_verf.oa_length));
+		if (buf != NULL) {
+			IXDR_PUT_LONG(buf, cmsg->rm_xid);
+			IXDR_PUT_ENUM(buf, cmsg->rm_direction);
+			if (cmsg->rm_direction != CALL) {
+				return (FALSE);
+			}
+			IXDR_PUT_LONG(buf, cmsg->rm_call.cb_rpcvers);
+			if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
+				return (FALSE);
+			}
+			IXDR_PUT_LONG(buf, cmsg->rm_call.cb_prog);
+			IXDR_PUT_LONG(buf, cmsg->rm_call.cb_vers);
+			IXDR_PUT_LONG(buf, cmsg->rm_call.cb_proc);
+			oa = &cmsg->rm_call.cb_cred;
+			IXDR_PUT_ENUM(buf, oa->oa_flavor);
+			IXDR_PUT_LONG(buf, oa->oa_length);
+			if (oa->oa_length) {
+				bcopy(oa->oa_base, (caddr_t)buf, oa->oa_length);
+				buf += RNDUP(oa->oa_length) / sizeof (long);
+			}
+			oa = &cmsg->rm_call.cb_verf;
+			IXDR_PUT_ENUM(buf, oa->oa_flavor);
+			IXDR_PUT_LONG(buf, oa->oa_length);
+			if (oa->oa_length) {
+				bcopy(oa->oa_base, (caddr_t)buf, oa->oa_length);
+				/* no real need....
+				buf += RNDUP(oa->oa_length) / sizeof (long);
+				*/
+			}
+			return (TRUE);
+		}
+	}
+	if (xdrs->x_op == XDR_DECODE) {
+		buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT);
+		if (buf != NULL) {
+			cmsg->rm_xid = IXDR_GET_LONG(buf);
+			cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type);
+			if (cmsg->rm_direction != CALL) {
+				return (FALSE);
+			}
+			cmsg->rm_call.cb_rpcvers = IXDR_GET_LONG(buf);
+			if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
+				return (FALSE);
+			}
+			cmsg->rm_call.cb_prog = IXDR_GET_LONG(buf);
+			cmsg->rm_call.cb_vers = IXDR_GET_LONG(buf);
+			cmsg->rm_call.cb_proc = IXDR_GET_LONG(buf);
+			oa = &cmsg->rm_call.cb_cred;
+			oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
+			oa->oa_length = IXDR_GET_LONG(buf);
+			if (oa->oa_length) {
+				if (oa->oa_length > MAX_AUTH_BYTES) {
+					return (FALSE);
+				}
+				if (oa->oa_base == NULL) {
+					oa->oa_base = (caddr_t)
+						mem_alloc(oa->oa_length);
+				}
+				buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
+				if (buf == NULL) {
+					if (xdr_opaque(xdrs, oa->oa_base,
+					    oa->oa_length) == FALSE) {
+						return (FALSE);
+					}
+				} else {
+					bcopy((caddr_t)buf, oa->oa_base,
+					    oa->oa_length);
+					/* no real need....
+					buf += RNDUP(oa->oa_length) /
+						sizeof (long);
+					*/
+				}
+			}
+			oa = &cmsg->rm_call.cb_verf;
+			buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT);
+			if (buf == NULL) {
+				if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE ||
+				    xdr_u_int(xdrs, &oa->oa_length) == FALSE) {
+					return (FALSE);
+				}
+			} else {
+				oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
+				oa->oa_length = IXDR_GET_LONG(buf);
+			}
+			if (oa->oa_length) {
+				if (oa->oa_length > MAX_AUTH_BYTES) {
+					return (FALSE);
+				}
+				if (oa->oa_base == NULL) {
+					oa->oa_base = (caddr_t)
+						mem_alloc(oa->oa_length);
+				}
+				buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length));
+				if (buf == NULL) {
+					if (xdr_opaque(xdrs, oa->oa_base,
+					    oa->oa_length) == FALSE) {
+						return (FALSE);
+					}
+				} else {
+					bcopy((caddr_t)buf, oa->oa_base,
+					    oa->oa_length);
+					/* no real need...
+					buf += RNDUP(oa->oa_length) /
+						sizeof (long);
+					*/
+				}
+			}
+			return (TRUE);
+		}
+	}
+	if (
+	    xdr_u_long(xdrs, &(cmsg->rm_xid)) &&
+	    xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
+	    (cmsg->rm_direction == CALL) &&
+	    xdr_u_long(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
+	    (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&
+	    xdr_u_long(xdrs, &(cmsg->rm_call.cb_prog)) &&
+	    xdr_u_long(xdrs, &(cmsg->rm_call.cb_vers)) &&
+	    xdr_u_long(xdrs, &(cmsg->rm_call.cb_proc)) &&
+	    xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) )
+	    return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf)));
+	return (FALSE);
+}
+
diff --git a/lib/libc/rpc/rpc_commondata.c b/lib/libc/rpc/rpc_commondata.c
new file mode 100644
index 0000000..aa09526
--- /dev/null
+++ b/lib/libc/rpc/rpc_commondata.c
@@ -0,0 +1,46 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)rpc_commondata.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: rpc_commondata.c,v 1.1 1994/08/07 18:36:01 wollman Exp $";
+#endif
+
+#include <rpc/rpc.h>
+/*
+ * This file should only contain common data (global data) that is exported
+ * by public interfaces
+ */
+struct opaque_auth _null_auth;
+#ifdef FD_SETSIZE
+fd_set svc_fdset;
+#else
+int svc_fds;
+#endif /* def FD_SETSIZE */
+struct rpc_createerr rpc_createerr;
diff --git a/lib/libc/rpc/rpc_dtablesize.c b/lib/libc/rpc/rpc_dtablesize.c
new file mode 100644
index 0000000..6ca511d
--- /dev/null
+++ b/lib/libc/rpc/rpc_dtablesize.c
@@ -0,0 +1,63 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)rpc_dtablesize.c 1.2 87/08/11 Copyr 1987 Sun Micro";*/
+/*static char *sccsid = "from: @(#)rpc_dtablesize.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "rpc_dtablesize.c,v 1.1 1994/08/07 18:36:02 wollman Exp";
+#endif
+
+#include <sys/types.h>
+
+/*
+ * Cache the result of getdtablesize(), so we don't have to do an
+ * expensive system call every time.
+ */
+/*
+ * XXX In FreeBSD 2.x, you can have the maximum number of open file
+ * descriptors be greater than FD_SETSIZE (which us 256 by default).
+ * This can lead to many RPC functions getting back an EINVAL from
+ * select() and bombing all over the place.
+ *
+ * You can apparently get select() to handle values larger than 256
+ * by patching the kernel, but most people aren't likely to know
+ * that. Clamping this function at 256 is a kludge, but it'll have to
+ * do until select()'s descriptor table size can be adjusted dynamically.
+ */
+_rpc_dtablesize()
+{
+	static int size;
+
+	if (size == 0) {
+		size = getdtablesize();
+		if (size > FD_SETSIZE)
+			size = FD_SETSIZE;
+	}
+	return (size);
+}
diff --git a/lib/libc/rpc/rpc_prot.c b/lib/libc/rpc/rpc_prot.c
new file mode 100644
index 0000000..1693b67
--- /dev/null
+++ b/lib/libc/rpc/rpc_prot.c
@@ -0,0 +1,291 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)rpc_prot.c 1.36 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)rpc_prot.c	2.3 88/08/07 4.0 RPCSRC";*/
+static char *rcsid = "$Id: rpc_prot.c,v 1.1 1994/08/07 18:36:03 wollman Exp $";
+#endif
+
+/*
+ * rpc_prot.c
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ *
+ * This set of routines implements the rpc message definition,
+ * its serializer and some common rpc utility routines.
+ * The routines are meant for various implementations of rpc -
+ * they are NOT for the rpc client or rpc service implementations!
+ * Because authentication stuff is easy and is part of rpc, the opaque
+ * routines are also in this program.
+ */
+
+#include <sys/param.h>
+
+#include <rpc/rpc.h>
+
+/* * * * * * * * * * * * * * XDR Authentication * * * * * * * * * * * */
+
+struct opaque_auth _null_auth;
+
+/*
+ * XDR an opaque authentication struct
+ * (see auth.h)
+ */
+bool_t
+xdr_opaque_auth(xdrs, ap)
+	register XDR *xdrs;
+	register struct opaque_auth *ap;
+{
+
+	if (xdr_enum(xdrs, &(ap->oa_flavor)))
+		return (xdr_bytes(xdrs, &ap->oa_base,
+			&ap->oa_length, MAX_AUTH_BYTES));
+	return (FALSE);
+}
+
+/*
+ * XDR a DES block
+ */
+bool_t
+xdr_des_block(xdrs, blkp)
+	register XDR *xdrs;
+	register des_block *blkp;
+{
+	return (xdr_opaque(xdrs, (caddr_t)blkp, sizeof(des_block)));
+}
+
+/* * * * * * * * * * * * * * XDR RPC MESSAGE * * * * * * * * * * * * * * * */
+
+/*
+ * XDR the MSG_ACCEPTED part of a reply message union
+ */
+bool_t
+xdr_accepted_reply(xdrs, ar)
+	register XDR *xdrs;
+	register struct accepted_reply *ar;
+{
+
+	/* personalized union, rather than calling xdr_union */
+	if (! xdr_opaque_auth(xdrs, &(ar->ar_verf)))
+		return (FALSE);
+	if (! xdr_enum(xdrs, (enum_t *)&(ar->ar_stat)))
+		return (FALSE);
+	switch (ar->ar_stat) {
+
+	case SUCCESS:
+		return ((*(ar->ar_results.proc))(xdrs, ar->ar_results.where));
+
+	case PROG_MISMATCH:
+		if (! xdr_u_long(xdrs, &(ar->ar_vers.low)))
+			return (FALSE);
+		return (xdr_u_long(xdrs, &(ar->ar_vers.high)));
+	}
+	return (TRUE);  /* TRUE => open ended set of problems */
+}
+
+/*
+ * XDR the MSG_DENIED part of a reply message union
+ */
+bool_t
+xdr_rejected_reply(xdrs, rr)
+	register XDR *xdrs;
+	register struct rejected_reply *rr;
+{
+
+	/* personalized union, rather than calling xdr_union */
+	if (! xdr_enum(xdrs, (enum_t *)&(rr->rj_stat)))
+		return (FALSE);
+	switch (rr->rj_stat) {
+
+	case RPC_MISMATCH:
+		if (! xdr_u_long(xdrs, &(rr->rj_vers.low)))
+			return (FALSE);
+		return (xdr_u_long(xdrs, &(rr->rj_vers.high)));
+
+	case AUTH_ERROR:
+		return (xdr_enum(xdrs, (enum_t *)&(rr->rj_why)));
+	}
+	return (FALSE);
+}
+
+static struct xdr_discrim reply_dscrm[3] = {
+	{ (int)MSG_ACCEPTED, xdr_accepted_reply },
+	{ (int)MSG_DENIED, xdr_rejected_reply },
+	{ __dontcare__, NULL_xdrproc_t } };
+
+/*
+ * XDR a reply message
+ */
+bool_t
+xdr_replymsg(xdrs, rmsg)
+	register XDR *xdrs;
+	register struct rpc_msg *rmsg;
+{
+	if (
+	    xdr_u_long(xdrs, &(rmsg->rm_xid)) &&
+	    xdr_enum(xdrs, (enum_t *)&(rmsg->rm_direction)) &&
+	    (rmsg->rm_direction == REPLY) )
+		return (xdr_union(xdrs, (enum_t *)&(rmsg->rm_reply.rp_stat),
+		   (caddr_t)&(rmsg->rm_reply.ru), reply_dscrm, NULL_xdrproc_t));
+	return (FALSE);
+}
+
+
+/*
+ * Serializes the "static part" of a call message header.
+ * The fields include: rm_xid, rm_direction, rpcvers, prog, and vers.
+ * The rm_xid is not really static, but the user can easily munge on the fly.
+ */
+bool_t
+xdr_callhdr(xdrs, cmsg)
+	register XDR *xdrs;
+	register struct rpc_msg *cmsg;
+{
+
+	cmsg->rm_direction = CALL;
+	cmsg->rm_call.cb_rpcvers = RPC_MSG_VERSION;
+	if (
+	    (xdrs->x_op == XDR_ENCODE) &&
+	    xdr_u_long(xdrs, &(cmsg->rm_xid)) &&
+	    xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
+	    xdr_u_long(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
+	    xdr_u_long(xdrs, &(cmsg->rm_call.cb_prog)) )
+	    return (xdr_u_long(xdrs, &(cmsg->rm_call.cb_vers)));
+	return (FALSE);
+}
+
+/* ************************** Client utility routine ************* */
+
+static void
+accepted(acpt_stat, error)
+	register enum accept_stat acpt_stat;
+	register struct rpc_err *error;
+{
+
+	switch (acpt_stat) {
+
+	case PROG_UNAVAIL:
+		error->re_status = RPC_PROGUNAVAIL;
+		return;
+
+	case PROG_MISMATCH:
+		error->re_status = RPC_PROGVERSMISMATCH;
+		return;
+
+	case PROC_UNAVAIL:
+		error->re_status = RPC_PROCUNAVAIL;
+		return;
+
+	case GARBAGE_ARGS:
+		error->re_status = RPC_CANTDECODEARGS;
+		return;
+
+	case SYSTEM_ERR:
+		error->re_status = RPC_SYSTEMERROR;
+		return;
+
+	case SUCCESS:
+		error->re_status = RPC_SUCCESS;
+		return;
+	}
+	/* something's wrong, but we don't know what ... */
+	error->re_status = RPC_FAILED;
+	error->re_lb.s1 = (long)MSG_ACCEPTED;
+	error->re_lb.s2 = (long)acpt_stat;
+}
+
+static void
+rejected(rjct_stat, error)
+	register enum reject_stat rjct_stat;
+	register struct rpc_err *error;
+{
+
+	switch (rjct_stat) {
+
+	case RPC_VERSMISMATCH:
+		error->re_status = RPC_VERSMISMATCH;
+		return;
+
+	case AUTH_ERROR:
+		error->re_status = RPC_AUTHERROR;
+		return;
+	}
+	/* something's wrong, but we don't know what ... */
+	error->re_status = RPC_FAILED;
+	error->re_lb.s1 = (long)MSG_DENIED;
+	error->re_lb.s2 = (long)rjct_stat;
+}
+
+/*
+ * given a reply message, fills in the error
+ */
+void
+_seterr_reply(msg, error)
+	register struct rpc_msg *msg;
+	register struct rpc_err *error;
+{
+
+	/* optimized for normal, SUCCESSful case */
+	switch (msg->rm_reply.rp_stat) {
+
+	case MSG_ACCEPTED:
+		if (msg->acpted_rply.ar_stat == SUCCESS) {
+			error->re_status = RPC_SUCCESS;
+			return;
+		};
+		accepted(msg->acpted_rply.ar_stat, error);
+		break;
+
+	case MSG_DENIED:
+		rejected(msg->rjcted_rply.rj_stat, error);
+		break;
+
+	default:
+		error->re_status = RPC_FAILED;
+		error->re_lb.s1 = (long)(msg->rm_reply.rp_stat);
+		break;
+	}
+	switch (error->re_status) {
+
+	case RPC_VERSMISMATCH:
+		error->re_vers.low = msg->rjcted_rply.rj_vers.low;
+		error->re_vers.high = msg->rjcted_rply.rj_vers.high;
+		break;
+
+	case RPC_AUTHERROR:
+		error->re_why = msg->rjcted_rply.rj_why;
+		break;
+
+	case RPC_PROGVERSMISMATCH:
+		error->re_vers.low = msg->acpted_rply.ar_vers.low;
+		error->re_vers.high = msg->acpted_rply.ar_vers.high;
+		break;
+	}
+}
diff --git a/lib/libc/rpc/rstat.1 b/lib/libc/rpc/rstat.1
new file mode 100644
index 0000000..61d9999
--- /dev/null
+++ b/lib/libc/rpc/rstat.1
@@ -0,0 +1,57 @@
+.\" @(#)rstat.1	2.1 88/08/03 4.0 RPCSRC
+.TH RSTAT 1 "3 August 1988"
+.SH NAME
+rstat \- remote status display
+.SH SYNOPSIS
+.B rstat
+.B host
+.SH DESCRIPTION
+.LP
+.B rstat
+displays a summary of the current system status of a particular
+.BR host .
+The output shows the current time of day, how long the system has
+been up,
+and the load averages.
+The load average numbers give the number of jobs in the run queue
+averaged over 1, 5 and 15 minutes.
+.PP
+The
+.B rstat_svc(8c)
+daemon must be running on the remote host for this command to
+work.
+.B rstat
+uses an RPC protocol defined in /usr/include/rpcsvc/rstat.x.
+.SH EXAMPLE
+.RS
+.ft B
+.nf
+example% rstat otherhost
+7:36am  up 6 days, 16:45,  load average: 0.20, 0.23, 0.18
+example%
+.ft R
+.fi
+.RE
+.SH DIAGNOSTICS
+.LP
+rstat: RPC: Program not registered
+.IP
+The
+.B rstat_svc
+daemon has not been started on the remote host.
+.LP
+rstat: RPC: Timed out
+.IP
+A communication error occurred.  Either the network is
+excessively congested, or the
+.B rstat_svc
+daemon has terminated on the remote host.
+.LP
+rstat: RPC: Port mapper failure - RPC: Timed out
+.IP
+The remote host is not running the portmapper (see
+.BR portmap(8c) ),
+and cannot accomodate any RPC-based services.  The host may be down.
+.SH "SEE ALSO"
+.BR portmap (8c),
+.BR rstat_svc (8c)
diff --git a/lib/libc/rpc/rstat_svc.8 b/lib/libc/rpc/rstat_svc.8
new file mode 100644
index 0000000..a10b71d
--- /dev/null
+++ b/lib/libc/rpc/rstat_svc.8
@@ -0,0 +1,21 @@
+.\" @(#)rstat_svc.8c	2.2 88/08/03 4.0 RPCSRC; from 1.10 87/09/09 SMI
+.TH RSTAT_SVC 8C "24 November 1987"
+.SH NAME
+rstat_svc \- kernel statistics server
+.SH SYNOPSIS
+.B /etc/rstat_svc
+.SH DESCRIPTION
+.LP
+.B rstat_svc
+is a server which returns performance statistics
+obtained from the kernel.
+These statistics are graphically displayed by the Sun Microsystems program,
+.BR perfmeter (1).
+The
+.B rstat_svc
+daemon is normally invoked at boot time through /etc/rc.local.
+.PP
+.B rstat_svc
+uses an RPC protocol defined in /usr/include/rpcsvc/rstat.x.
+.SH "SEE ALSO"
+.BR rstat (1),
diff --git a/lib/libc/rpc/svc.c b/lib/libc/rpc/svc.c
new file mode 100644
index 0000000..809cbfb
--- /dev/null
+++ b/lib/libc/rpc/svc.c
@@ -0,0 +1,483 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)svc.c 1.44 88/02/08 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)svc.c	2.4 88/08/11 4.0 RPCSRC";*/
+static char *rcsid = "$Id: svc.c,v 1.2 1995/05/30 05:41:31 rgrimes Exp $";
+#endif
+
+/*
+ * svc.c, Server-side remote procedure call interface.
+ *
+ * There are two sets of procedures here.  The xprt routines are
+ * for handling transport handles.  The svc routines handle the
+ * list of service routines.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <sys/errno.h>
+#include <rpc/rpc.h>
+#include <rpc/pmap_clnt.h>
+
+extern int errno;
+
+#ifdef FD_SETSIZE
+static SVCXPRT **xports;
+#else
+#define NOFILE 32
+
+static SVCXPRT *xports[NOFILE];
+#endif /* def FD_SETSIZE */
+
+#define NULL_SVC ((struct svc_callout *)0)
+#define	RQCRED_SIZE	400		/* this size is excessive */
+
+/*
+ * The services list
+ * Each entry represents a set of procedures (an rpc program).
+ * The dispatch routine takes request structs and runs the
+ * apropriate procedure.
+ */
+static struct svc_callout {
+	struct svc_callout *sc_next;
+	u_long		    sc_prog;
+	u_long		    sc_vers;
+	void		    (*sc_dispatch)();
+} *svc_head;
+
+static struct svc_callout *svc_find();
+
+/* ***************  SVCXPRT related stuff **************** */
+
+/*
+ * Activate a transport handle.
+ */
+void
+xprt_register(xprt)
+	SVCXPRT *xprt;
+{
+	register int sock = xprt->xp_sock;
+
+#ifdef FD_SETSIZE
+	if (xports == NULL) {
+		xports = (SVCXPRT **)
+			mem_alloc(FD_SETSIZE * sizeof(SVCXPRT *));
+	}
+	if (sock < _rpc_dtablesize()) {
+		xports[sock] = xprt;
+		FD_SET(sock, &svc_fdset);
+	}
+#else
+	if (sock < NOFILE) {
+		xports[sock] = xprt;
+		svc_fds |= (1 << sock);
+	}
+#endif /* def FD_SETSIZE */
+
+}
+
+/*
+ * De-activate a transport handle.
+ */
+void
+xprt_unregister(xprt)
+	SVCXPRT *xprt;
+{
+	register int sock = xprt->xp_sock;
+
+#ifdef FD_SETSIZE
+	if ((sock < _rpc_dtablesize()) && (xports[sock] == xprt)) {
+		xports[sock] = (SVCXPRT *)0;
+		FD_CLR(sock, &svc_fdset);
+	}
+#else
+	if ((sock < NOFILE) && (xports[sock] == xprt)) {
+		xports[sock] = (SVCXPRT *)0;
+		svc_fds &= ~(1 << sock);
+	}
+#endif /* def FD_SETSIZE */
+}
+
+
+/* ********************** CALLOUT list related stuff ************* */
+
+/*
+ * Add a service program to the callout list.
+ * The dispatch routine will be called when a rpc request for this
+ * program number comes in.
+ */
+bool_t
+svc_register(xprt, prog, vers, dispatch, protocol)
+	SVCXPRT *xprt;
+	u_long prog;
+	u_long vers;
+	void (*dispatch)();
+	int protocol;
+{
+	struct svc_callout *prev;
+	register struct svc_callout *s;
+
+	if ((s = svc_find(prog, vers, &prev)) != NULL_SVC) {
+		if (s->sc_dispatch == dispatch)
+			goto pmap_it;  /* he is registering another xptr */
+		return (FALSE);
+	}
+	s = (struct svc_callout *)mem_alloc(sizeof(struct svc_callout));
+	if (s == (struct svc_callout *)0) {
+		return (FALSE);
+	}
+	s->sc_prog = prog;
+	s->sc_vers = vers;
+	s->sc_dispatch = dispatch;
+	s->sc_next = svc_head;
+	svc_head = s;
+pmap_it:
+	/* now register the information with the local binder service */
+	if (protocol) {
+		return (pmap_set(prog, vers, protocol, xprt->xp_port));
+	}
+	return (TRUE);
+}
+
+/*
+ * Remove a service program from the callout list.
+ */
+void
+svc_unregister(prog, vers)
+	u_long prog;
+	u_long vers;
+{
+	struct svc_callout *prev;
+	register struct svc_callout *s;
+
+	if ((s = svc_find(prog, vers, &prev)) == NULL_SVC)
+		return;
+	if (prev == NULL_SVC) {
+		svc_head = s->sc_next;
+	} else {
+		prev->sc_next = s->sc_next;
+	}
+	s->sc_next = NULL_SVC;
+	mem_free((char *) s, (u_int) sizeof(struct svc_callout));
+	/* now unregister the information with the local binder service */
+	(void)pmap_unset(prog, vers);
+}
+
+/*
+ * Search the callout list for a program number, return the callout
+ * struct.
+ */
+static struct svc_callout *
+svc_find(prog, vers, prev)
+	u_long prog;
+	u_long vers;
+	struct svc_callout **prev;
+{
+	register struct svc_callout *s, *p;
+
+	p = NULL_SVC;
+	for (s = svc_head; s != NULL_SVC; s = s->sc_next) {
+		if ((s->sc_prog == prog) && (s->sc_vers == vers))
+			goto done;
+		p = s;
+	}
+done:
+	*prev = p;
+	return (s);
+}
+
+/* ******************* REPLY GENERATION ROUTINES  ************ */
+
+/*
+ * Send a reply to an rpc request
+ */
+bool_t
+svc_sendreply(xprt, xdr_results, xdr_location)
+	register SVCXPRT *xprt;
+	xdrproc_t xdr_results;
+	caddr_t xdr_location;
+{
+	struct rpc_msg rply;
+
+	rply.rm_direction = REPLY;
+	rply.rm_reply.rp_stat = MSG_ACCEPTED;
+	rply.acpted_rply.ar_verf = xprt->xp_verf;
+	rply.acpted_rply.ar_stat = SUCCESS;
+	rply.acpted_rply.ar_results.where = xdr_location;
+	rply.acpted_rply.ar_results.proc = xdr_results;
+	return (SVC_REPLY(xprt, &rply));
+}
+
+/*
+ * No procedure error reply
+ */
+void
+svcerr_noproc(xprt)
+	register SVCXPRT *xprt;
+{
+	struct rpc_msg rply;
+
+	rply.rm_direction = REPLY;
+	rply.rm_reply.rp_stat = MSG_ACCEPTED;
+	rply.acpted_rply.ar_verf = xprt->xp_verf;
+	rply.acpted_rply.ar_stat = PROC_UNAVAIL;
+	SVC_REPLY(xprt, &rply);
+}
+
+/*
+ * Can't decode args error reply
+ */
+void
+svcerr_decode(xprt)
+	register SVCXPRT *xprt;
+{
+	struct rpc_msg rply;
+
+	rply.rm_direction = REPLY;
+	rply.rm_reply.rp_stat = MSG_ACCEPTED;
+	rply.acpted_rply.ar_verf = xprt->xp_verf;
+	rply.acpted_rply.ar_stat = GARBAGE_ARGS;
+	SVC_REPLY(xprt, &rply);
+}
+
+/*
+ * Some system error
+ */
+void
+svcerr_systemerr(xprt)
+	register SVCXPRT *xprt;
+{
+	struct rpc_msg rply;
+
+	rply.rm_direction = REPLY;
+	rply.rm_reply.rp_stat = MSG_ACCEPTED;
+	rply.acpted_rply.ar_verf = xprt->xp_verf;
+	rply.acpted_rply.ar_stat = SYSTEM_ERR;
+	SVC_REPLY(xprt, &rply);
+}
+
+/*
+ * Authentication error reply
+ */
+void
+svcerr_auth(xprt, why)
+	SVCXPRT *xprt;
+	enum auth_stat why;
+{
+	struct rpc_msg rply;
+
+	rply.rm_direction = REPLY;
+	rply.rm_reply.rp_stat = MSG_DENIED;
+	rply.rjcted_rply.rj_stat = AUTH_ERROR;
+	rply.rjcted_rply.rj_why = why;
+	SVC_REPLY(xprt, &rply);
+}
+
+/*
+ * Auth too weak error reply
+ */
+void
+svcerr_weakauth(xprt)
+	SVCXPRT *xprt;
+{
+
+	svcerr_auth(xprt, AUTH_TOOWEAK);
+}
+
+/*
+ * Program unavailable error reply
+ */
+void
+svcerr_noprog(xprt)
+	register SVCXPRT *xprt;
+{
+	struct rpc_msg rply;
+
+	rply.rm_direction = REPLY;
+	rply.rm_reply.rp_stat = MSG_ACCEPTED;
+	rply.acpted_rply.ar_verf = xprt->xp_verf;
+	rply.acpted_rply.ar_stat = PROG_UNAVAIL;
+	SVC_REPLY(xprt, &rply);
+}
+
+/*
+ * Program version mismatch error reply
+ */
+void
+svcerr_progvers(xprt, low_vers, high_vers)
+	register SVCXPRT *xprt;
+	u_long low_vers;
+	u_long high_vers;
+{
+	struct rpc_msg rply;
+
+	rply.rm_direction = REPLY;
+	rply.rm_reply.rp_stat = MSG_ACCEPTED;
+	rply.acpted_rply.ar_verf = xprt->xp_verf;
+	rply.acpted_rply.ar_stat = PROG_MISMATCH;
+	rply.acpted_rply.ar_vers.low = low_vers;
+	rply.acpted_rply.ar_vers.high = high_vers;
+	SVC_REPLY(xprt, &rply);
+}
+
+/* ******************* SERVER INPUT STUFF ******************* */
+
+/*
+ * Get server side input from some transport.
+ *
+ * Statement of authentication parameters management:
+ * This function owns and manages all authentication parameters, specifically
+ * the "raw" parameters (msg.rm_call.cb_cred and msg.rm_call.cb_verf) and
+ * the "cooked" credentials (rqst->rq_clntcred).
+ * However, this function does not know the structure of the cooked
+ * credentials, so it make the following assumptions:
+ *   a) the structure is contiguous (no pointers), and
+ *   b) the cred structure size does not exceed RQCRED_SIZE bytes.
+ * In all events, all three parameters are freed upon exit from this routine.
+ * The storage is trivially management on the call stack in user land, but
+ * is mallocated in kernel land.
+ */
+
+void
+svc_getreq(rdfds)
+	int rdfds;
+{
+#ifdef FD_SETSIZE
+	fd_set readfds;
+
+	FD_ZERO(&readfds);
+	readfds.fds_bits[0] = rdfds;
+	svc_getreqset(&readfds);
+#else
+	int readfds = rdfds & svc_fds;
+
+	svc_getreqset(&readfds);
+#endif /* def FD_SETSIZE */
+}
+
+void
+svc_getreqset(readfds)
+#ifdef FD_SETSIZE
+	fd_set *readfds;
+{
+#else
+	int *readfds;
+{
+    int readfds_local = *readfds;
+#endif /* def FD_SETSIZE */
+	enum xprt_stat stat;
+	struct rpc_msg msg;
+	int prog_found;
+	u_long low_vers;
+	u_long high_vers;
+	struct svc_req r;
+	register SVCXPRT *xprt;
+	register u_long mask;
+	register int bit;
+	register u_long *maskp;
+	register int setsize;
+	register int sock;
+	char cred_area[2*MAX_AUTH_BYTES + RQCRED_SIZE];
+	msg.rm_call.cb_cred.oa_base = cred_area;
+	msg.rm_call.cb_verf.oa_base = &(cred_area[MAX_AUTH_BYTES]);
+	r.rq_clntcred = &(cred_area[2*MAX_AUTH_BYTES]);
+
+
+#ifdef FD_SETSIZE
+	setsize = _rpc_dtablesize();
+	maskp = (u_long *)readfds->fds_bits;
+	for (sock = 0; sock < setsize; sock += NFDBITS) {
+	    for (mask = *maskp++; bit = ffs(mask); mask ^= (1 << (bit - 1))) {
+		/* sock has input waiting */
+		xprt = xports[sock + bit - 1];
+#else
+	for (sock = 0; readfds_local != 0; sock++, readfds_local >>= 1) {
+	    if ((readfds_local & 1) != 0) {
+		/* sock has input waiting */
+		xprt = xports[sock];
+#endif /* def FD_SETSIZE */
+		/* now receive msgs from xprtprt (support batch calls) */
+		do {
+			if (SVC_RECV(xprt, &msg)) {
+
+				/* now find the exported program and call it */
+				register struct svc_callout *s;
+				enum auth_stat why;
+
+				r.rq_xprt = xprt;
+				r.rq_prog = msg.rm_call.cb_prog;
+				r.rq_vers = msg.rm_call.cb_vers;
+				r.rq_proc = msg.rm_call.cb_proc;
+				r.rq_cred = msg.rm_call.cb_cred;
+				/* first authenticate the message */
+				if ((why= _authenticate(&r, &msg)) != AUTH_OK) {
+					svcerr_auth(xprt, why);
+					goto call_done;
+				}
+				/* now match message with a registered service*/
+				prog_found = FALSE;
+				low_vers = 0 - 1;
+				high_vers = 0;
+				for (s = svc_head; s != NULL_SVC; s = s->sc_next) {
+					if (s->sc_prog == r.rq_prog) {
+						if (s->sc_vers == r.rq_vers) {
+							(*s->sc_dispatch)(&r, xprt);
+							goto call_done;
+						}  /* found correct version */
+						prog_found = TRUE;
+						if (s->sc_vers < low_vers)
+							low_vers = s->sc_vers;
+						if (s->sc_vers > high_vers)
+							high_vers = s->sc_vers;
+					}   /* found correct program */
+				}
+				/*
+				 * if we got here, the program or version
+				 * is not served ...
+				 */
+				if (prog_found)
+					svcerr_progvers(xprt,
+					low_vers, high_vers);
+				else
+					 svcerr_noprog(xprt);
+				/* Fall through to ... */
+			}
+		call_done:
+			if ((stat = SVC_STAT(xprt)) == XPRT_DIED){
+				SVC_DESTROY(xprt);
+				break;
+			}
+		} while (stat == XPRT_MOREREQS);
+	    }
+	}
+}
diff --git a/lib/libc/rpc/svc_auth.c b/lib/libc/rpc/svc_auth.c
new file mode 100644
index 0000000..6c1e560
--- /dev/null
+++ b/lib/libc/rpc/svc_auth.c
@@ -0,0 +1,117 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)svc_auth.c 1.19 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)svc_auth.c	2.1 88/08/07 4.0 RPCSRC";*/
+static char *rcsid = "$Id: svc_auth.c,v 1.1 1994/08/07 18:36:07 wollman Exp $";
+#endif
+
+/*
+ * svc_auth_nodes.c, Server-side rpc authenticator interface,
+ * *WITHOUT* DES authentication.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <rpc/rpc.h>
+
+/*
+ * svcauthsw is the bdevsw of server side authentication.
+ *
+ * Server side authenticators are called from authenticate by
+ * using the client auth struct flavor field to index into svcauthsw.
+ * The server auth flavors must implement a routine that looks
+ * like:
+ *
+ *	enum auth_stat
+ *	flavorx_auth(rqst, msg)
+ *		register struct svc_req *rqst;
+ *		register struct rpc_msg *msg;
+ *
+ */
+
+enum auth_stat _svcauth_null();		/* no authentication */
+enum auth_stat _svcauth_unix();		/* unix style (uid, gids) */
+enum auth_stat _svcauth_short();	/* short hand unix style */
+
+static struct {
+	enum auth_stat (*authenticator)();
+} svcauthsw[] = {
+	_svcauth_null,			/* AUTH_NULL */
+	_svcauth_unix,			/* AUTH_UNIX */
+	_svcauth_short,			/* AUTH_SHORT */
+};
+#define	AUTH_MAX	2		/* HIGHEST AUTH NUMBER */
+
+
+/*
+ * The call rpc message, msg has been obtained from the wire.  The msg contains
+ * the raw form of credentials and verifiers.  authenticate returns AUTH_OK
+ * if the msg is successfully authenticated.  If AUTH_OK then the routine also
+ * does the following things:
+ * set rqst->rq_xprt->verf to the appropriate response verifier;
+ * sets rqst->rq_client_cred to the "cooked" form of the credentials.
+ *
+ * NB: rqst->rq_cxprt->verf must be pre-alloctaed;
+ * its length is set appropriately.
+ *
+ * The caller still owns and is responsible for msg->u.cmb.cred and
+ * msg->u.cmb.verf.  The authentication system retains ownership of
+ * rqst->rq_client_cred, the cooked credentials.
+ *
+ * There is an assumption that any flavour less than AUTH_NULL is
+ * invalid.
+ */
+enum auth_stat
+_authenticate(rqst, msg)
+	register struct svc_req *rqst;
+	struct rpc_msg *msg;
+{
+	register int cred_flavor;
+
+	rqst->rq_cred = msg->rm_call.cb_cred;
+	rqst->rq_xprt->xp_verf.oa_flavor = _null_auth.oa_flavor;
+	rqst->rq_xprt->xp_verf.oa_length = 0;
+	cred_flavor = rqst->rq_cred.oa_flavor;
+	if ((cred_flavor <= AUTH_MAX) && (cred_flavor >= AUTH_NULL)) {
+		return ((*(svcauthsw[cred_flavor].authenticator))(rqst, msg));
+	}
+
+	return (AUTH_REJECTEDCRED);
+}
+
+enum auth_stat
+_svcauth_null(/*rqst, msg*/)
+	/*struct svc_req *rqst;
+	struct rpc_msg *msg;*/
+{
+
+	return (AUTH_OK);
+}
diff --git a/lib/libc/rpc/svc_auth_unix.c b/lib/libc/rpc/svc_auth_unix.c
new file mode 100644
index 0000000..27ced54
--- /dev/null
+++ b/lib/libc/rpc/svc_auth_unix.c
@@ -0,0 +1,137 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)svc_auth_unix.c 1.28 88/02/08 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)svc_auth_unix.c	2.3 88/08/01 4.0 RPCSRC";*/
+static char *rcsid = "$Id: svc_auth_unix.c,v 1.2 1995/05/30 05:41:33 rgrimes Exp $";
+#endif
+
+/*
+ * svc_auth_unix.c
+ * Handles UNIX flavor authentication parameters on the service side of rpc.
+ * There are two svc auth implementations here: AUTH_UNIX and AUTH_SHORT.
+ * _svcauth_unix does full blown unix style uid,gid+gids auth,
+ * _svcauth_short uses a shorthand auth to index into a cache of longhand auths.
+ * Note: the shorthand has been gutted for efficiency.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <rpc/rpc.h>
+
+/*
+ * Unix longhand authenticator
+ */
+enum auth_stat
+_svcauth_unix(rqst, msg)
+	register struct svc_req *rqst;
+	register struct rpc_msg *msg;
+{
+	register enum auth_stat stat;
+	XDR xdrs;
+	register struct authunix_parms *aup;
+	register long *buf;
+	struct area {
+		struct authunix_parms area_aup;
+		char area_machname[MAX_MACHINE_NAME+1];
+		int area_gids[NGRPS];
+	} *area;
+	u_int auth_len;
+	int str_len, gid_len;
+	register int i;
+
+	area = (struct area *) rqst->rq_clntcred;
+	aup = &area->area_aup;
+	aup->aup_machname = area->area_machname;
+	aup->aup_gids = area->area_gids;
+	auth_len = (u_int)msg->rm_call.cb_cred.oa_length;
+	xdrmem_create(&xdrs, msg->rm_call.cb_cred.oa_base, auth_len,XDR_DECODE);
+	buf = XDR_INLINE(&xdrs, auth_len);
+	if (buf != NULL) {
+		aup->aup_time = IXDR_GET_LONG(buf);
+		str_len = IXDR_GET_U_LONG(buf);
+		if (str_len > MAX_MACHINE_NAME) {
+			stat = AUTH_BADCRED;
+			goto done;
+		}
+		bcopy((caddr_t)buf, aup->aup_machname, (u_int)str_len);
+		aup->aup_machname[str_len] = 0;
+		str_len = RNDUP(str_len);
+		buf += str_len / sizeof (long);
+		aup->aup_uid = IXDR_GET_LONG(buf);
+		aup->aup_gid = IXDR_GET_LONG(buf);
+		gid_len = IXDR_GET_U_LONG(buf);
+		if (gid_len > NGRPS) {
+			stat = AUTH_BADCRED;
+			goto done;
+		}
+		aup->aup_len = gid_len;
+		for (i = 0; i < gid_len; i++) {
+			aup->aup_gids[i] = IXDR_GET_LONG(buf);
+		}
+		/*
+		 * five is the smallest unix credentials structure -
+		 * timestamp, hostname len (0), uid, gid, and gids len (0).
+		 */
+		if ((5 + gid_len) * BYTES_PER_XDR_UNIT + str_len > auth_len) {
+			(void) printf("bad auth_len gid %d str %d auth %d\n",
+			    gid_len, str_len, auth_len);
+			stat = AUTH_BADCRED;
+			goto done;
+		}
+	} else if (! xdr_authunix_parms(&xdrs, aup)) {
+		xdrs.x_op = XDR_FREE;
+		(void)xdr_authunix_parms(&xdrs, aup);
+		stat = AUTH_BADCRED;
+		goto done;
+	}
+	rqst->rq_xprt->xp_verf.oa_flavor = AUTH_NULL;
+	rqst->rq_xprt->xp_verf.oa_length = 0;
+	stat = AUTH_OK;
+done:
+	XDR_DESTROY(&xdrs);
+	return (stat);
+}
+
+
+/*
+ * Shorthand unix authenticator
+ * Looks up longhand in a cache.
+ */
+/*ARGSUSED*/
+enum auth_stat
+_svcauth_short(rqst, msg)
+	struct svc_req *rqst;
+	struct rpc_msg *msg;
+{
+	return (AUTH_REJECTEDCRED);
+}
diff --git a/lib/libc/rpc/svc_raw.c b/lib/libc/rpc/svc_raw.c
new file mode 100644
index 0000000..f72a5f4
--- /dev/null
+++ b/lib/libc/rpc/svc_raw.c
@@ -0,0 +1,168 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)svc_raw.c 1.15 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)svc_raw.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: svc_raw.c,v 1.2 1995/05/30 05:41:34 rgrimes Exp $";
+#endif
+
+/*
+ * svc_raw.c,   This a toy for simple testing and timing.
+ * Interface to create an rpc client and server in the same UNIX process.
+ * This lets us similate rpc and get rpc (round trip) overhead, without
+ * any interference from the kernal.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <rpc/rpc.h>
+#include <stdlib.h>
+
+/*
+ * This is the "network" that we will be moving data over
+ */
+static struct svcraw_private {
+	char	_raw_buf[UDPMSGSIZE];
+	SVCXPRT	server;
+	XDR	xdr_stream;
+	char	verf_body[MAX_AUTH_BYTES];
+} *svcraw_private;
+
+static bool_t		svcraw_recv();
+static enum xprt_stat 	svcraw_stat();
+static bool_t		svcraw_getargs();
+static bool_t		svcraw_reply();
+static bool_t		svcraw_freeargs();
+static void		svcraw_destroy();
+
+static struct xp_ops server_ops = {
+	svcraw_recv,
+	svcraw_stat,
+	svcraw_getargs,
+	svcraw_reply,
+	svcraw_freeargs,
+	svcraw_destroy
+};
+
+SVCXPRT *
+svcraw_create()
+{
+	register struct svcraw_private *srp = svcraw_private;
+
+	if (srp == 0) {
+		srp = (struct svcraw_private *)calloc(1, sizeof (*srp));
+		if (srp == 0)
+			return (0);
+	}
+	srp->server.xp_sock = 0;
+	srp->server.xp_port = 0;
+	srp->server.xp_ops = &server_ops;
+	srp->server.xp_verf.oa_base = srp->verf_body;
+	xdrmem_create(&srp->xdr_stream, srp->_raw_buf, UDPMSGSIZE, XDR_FREE);
+	return (&srp->server);
+}
+
+static enum xprt_stat
+svcraw_stat()
+{
+
+	return (XPRT_IDLE);
+}
+
+static bool_t
+svcraw_recv(xprt, msg)
+	SVCXPRT *xprt;
+	struct rpc_msg *msg;
+{
+	register struct svcraw_private *srp = svcraw_private;
+	register XDR *xdrs;
+
+	if (srp == 0)
+		return (0);
+	xdrs = &srp->xdr_stream;
+	xdrs->x_op = XDR_DECODE;
+	XDR_SETPOS(xdrs, 0);
+	if (! xdr_callmsg(xdrs, msg))
+	       return (FALSE);
+	return (TRUE);
+}
+
+static bool_t
+svcraw_reply(xprt, msg)
+	SVCXPRT *xprt;
+	struct rpc_msg *msg;
+{
+	register struct svcraw_private *srp = svcraw_private;
+	register XDR *xdrs;
+
+	if (srp == 0)
+		return (FALSE);
+	xdrs = &srp->xdr_stream;
+	xdrs->x_op = XDR_ENCODE;
+	XDR_SETPOS(xdrs, 0);
+	if (! xdr_replymsg(xdrs, msg))
+	       return (FALSE);
+	(void)XDR_GETPOS(xdrs);  /* called just for overhead */
+	return (TRUE);
+}
+
+static bool_t
+svcraw_getargs(xprt, xdr_args, args_ptr)
+	SVCXPRT *xprt;
+	xdrproc_t xdr_args;
+	caddr_t args_ptr;
+{
+	register struct svcraw_private *srp = svcraw_private;
+
+	if (srp == 0)
+		return (FALSE);
+	return ((*xdr_args)(&srp->xdr_stream, args_ptr));
+}
+
+static bool_t
+svcraw_freeargs(xprt, xdr_args, args_ptr)
+	SVCXPRT *xprt;
+	xdrproc_t xdr_args;
+	caddr_t args_ptr;
+{
+	register struct svcraw_private *srp = svcraw_private;
+	register XDR *xdrs;
+
+	if (srp == 0)
+		return (FALSE);
+	xdrs = &srp->xdr_stream;
+	xdrs->x_op = XDR_FREE;
+	return ((*xdr_args)(xdrs, args_ptr));
+}
+
+static void
+svcraw_destroy()
+{
+}
diff --git a/lib/libc/rpc/svc_run.c b/lib/libc/rpc/svc_run.c
new file mode 100644
index 0000000..730acd3
--- /dev/null
+++ b/lib/libc/rpc/svc_run.c
@@ -0,0 +1,73 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)svc_run.c 1.1 87/10/13 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)svc_run.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: svc_run.c,v 1.1 1994/08/07 18:36:09 wollman Exp $";
+#endif
+
+/*
+ * This is the rpc server side idle loop
+ * Wait for input, call server program.
+ */
+#include <rpc/rpc.h>
+#include <sys/errno.h>
+
+void
+svc_run()
+{
+#ifdef FD_SETSIZE
+	fd_set readfds;
+#else
+      int readfds;
+#endif /* def FD_SETSIZE */
+	extern int errno;
+
+	for (;;) {
+#ifdef FD_SETSIZE
+		readfds = svc_fdset;
+#else
+		readfds = svc_fds;
+#endif /* def FD_SETSIZE */
+		switch (select(_rpc_dtablesize(), &readfds, (int *)0, (int *)0,
+			       (struct timeval *)0)) {
+		case -1:
+			if (errno == EINTR) {
+				continue;
+			}
+			perror("svc_run: - select failed");
+			return;
+		case 0:
+			continue;
+		default:
+			svc_getreqset(&readfds);
+		}
+	}
+}
diff --git a/lib/libc/rpc/svc_simple.c b/lib/libc/rpc/svc_simple.c
new file mode 100644
index 0000000..8bcc306
--- /dev/null
+++ b/lib/libc/rpc/svc_simple.c
@@ -0,0 +1,147 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)svc_simple.c 1.18 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)svc_simple.c	2.2 88/08/01 4.0 RPCSRC";*/
+static char *rcsid = "$Id: svc_simple.c,v 1.2 1995/05/30 05:41:37 rgrimes Exp $";
+#endif
+
+/*
+ * svc_simple.c
+ * Simplified front end to rpc.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <rpc/rpc.h>
+#include <sys/socket.h>
+#include <netdb.h>
+
+static struct proglst {
+	char *(*p_progname)();
+	int  p_prognum;
+	int  p_procnum;
+	xdrproc_t p_inproc, p_outproc;
+	struct proglst *p_nxt;
+} *proglst;
+static void universal();
+static SVCXPRT *transp;
+struct proglst *pl;
+
+registerrpc(prognum, versnum, procnum, progname, inproc, outproc)
+	char *(*progname)();
+	xdrproc_t inproc, outproc;
+{
+
+	if (procnum == NULLPROC) {
+		(void) fprintf(stderr,
+		    "can't reassign procedure number %d\n", NULLPROC);
+		return (-1);
+	}
+	if (transp == 0) {
+		transp = svcudp_create(RPC_ANYSOCK);
+		if (transp == NULL) {
+			(void) fprintf(stderr, "couldn't create an rpc server\n");
+			return (-1);
+		}
+	}
+	(void) pmap_unset((u_long)prognum, (u_long)versnum);
+	if (!svc_register(transp, (u_long)prognum, (u_long)versnum,
+	    universal, IPPROTO_UDP)) {
+	    	(void) fprintf(stderr, "couldn't register prog %d vers %d\n",
+		    prognum, versnum);
+		return (-1);
+	}
+	pl = (struct proglst *)malloc(sizeof(struct proglst));
+	if (pl == NULL) {
+		(void) fprintf(stderr, "registerrpc: out of memory\n");
+		return (-1);
+	}
+	pl->p_progname = progname;
+	pl->p_prognum = prognum;
+	pl->p_procnum = procnum;
+	pl->p_inproc = inproc;
+	pl->p_outproc = outproc;
+	pl->p_nxt = proglst;
+	proglst = pl;
+	return (0);
+}
+
+static void
+universal(rqstp, transp)
+	struct svc_req *rqstp;
+	SVCXPRT *transp;
+{
+	int prog, proc;
+	char *outdata;
+	char xdrbuf[UDPMSGSIZE];
+	struct proglst *pl;
+
+	/*
+	 * enforce "procnum 0 is echo" convention
+	 */
+	if (rqstp->rq_proc == NULLPROC) {
+		if (svc_sendreply(transp, xdr_void, (char *)NULL) == FALSE) {
+			(void) fprintf(stderr, "xxx\n");
+			exit(1);
+		}
+		return;
+	}
+	prog = rqstp->rq_prog;
+	proc = rqstp->rq_proc;
+	for (pl = proglst; pl != NULL; pl = pl->p_nxt)
+		if (pl->p_prognum == prog && pl->p_procnum == proc) {
+			/* decode arguments into a CLEAN buffer */
+			bzero(xdrbuf, sizeof(xdrbuf)); /* required ! */
+			if (!svc_getargs(transp, pl->p_inproc, xdrbuf)) {
+				svcerr_decode(transp);
+				return;
+			}
+			outdata = (*(pl->p_progname))(xdrbuf);
+			if (outdata == NULL && pl->p_outproc != xdr_void)
+				/* there was an error */
+				return;
+			if (!svc_sendreply(transp, pl->p_outproc, outdata)) {
+				(void) fprintf(stderr,
+				    "trouble replying to prog %d\n",
+				    pl->p_prognum);
+				exit(1);
+			}
+			/* free the decoded arguments */
+			(void)svc_freeargs(transp, pl->p_inproc, xdrbuf);
+			return;
+		}
+	(void) fprintf(stderr, "never registered prog %d\n", prog);
+	exit(1);
+}
+
diff --git a/lib/libc/rpc/svc_tcp.c b/lib/libc/rpc/svc_tcp.c
new file mode 100644
index 0000000..e2d6733
--- /dev/null
+++ b/lib/libc/rpc/svc_tcp.c
@@ -0,0 +1,422 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)svc_tcp.c 1.21 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)svc_tcp.c	2.2 88/08/01 4.0 RPCSRC";*/
+static char *rcsid = "$Id: svc_tcp.c,v 1.3 1995/10/22 14:51:38 phk Exp $";
+#endif
+
+/*
+ * svc_tcp.c, Server side for TCP/IP based RPC.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ *
+ * Actually implements two flavors of transporter -
+ * a tcp rendezvouser (a listner and connection establisher)
+ * and a record/tcp stream.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <rpc/rpc.h>
+#include <sys/socket.h>
+#include <errno.h>
+
+/*
+ * Ops vector for TCP/IP based rpc service handle
+ */
+static bool_t		svctcp_recv();
+static enum xprt_stat	svctcp_stat();
+static bool_t		svctcp_getargs();
+static bool_t		svctcp_reply();
+static bool_t		svctcp_freeargs();
+static void		svctcp_destroy();
+
+static struct xp_ops svctcp_op = {
+	svctcp_recv,
+	svctcp_stat,
+	svctcp_getargs,
+	svctcp_reply,
+	svctcp_freeargs,
+	svctcp_destroy
+};
+
+/*
+ * Ops vector for TCP/IP rendezvous handler
+ */
+static bool_t		rendezvous_request();
+static enum xprt_stat	rendezvous_stat();
+
+static struct xp_ops svctcp_rendezvous_op = {
+	rendezvous_request,
+	rendezvous_stat,
+	abort,
+	abort,
+	abort,
+	svctcp_destroy
+};
+
+static int readtcp(), writetcp();
+static SVCXPRT *makefd_xprt();
+
+struct tcp_rendezvous { /* kept in xprt->xp_p1 */
+	u_int sendsize;
+	u_int recvsize;
+};
+
+struct tcp_conn {  /* kept in xprt->xp_p1 */
+	enum xprt_stat strm_stat;
+	u_long x_id;
+	XDR xdrs;
+	char verf_body[MAX_AUTH_BYTES];
+};
+
+/*
+ * Usage:
+ *	xprt = svctcp_create(sock, send_buf_size, recv_buf_size);
+ *
+ * Creates, registers, and returns a (rpc) tcp based transporter.
+ * Once *xprt is initialized, it is registered as a transporter
+ * see (svc.h, xprt_register).  This routine returns
+ * a NULL if a problem occurred.
+ *
+ * If sock<0 then a socket is created, else sock is used.
+ * If the socket, sock is not bound to a port then svctcp_create
+ * binds it to an arbitrary port.  The routine then starts a tcp
+ * listener on the socket's associated port.  In any (successful) case,
+ * xprt->xp_sock is the registered socket number and xprt->xp_port is the
+ * associated port number.
+ *
+ * Since tcp streams do buffered io similar to stdio, the caller can specify
+ * how big the send and receive buffers are via the second and third parms;
+ * 0 => use the system default.
+ */
+SVCXPRT *
+svctcp_create(sock, sendsize, recvsize)
+	register int sock;
+	u_int sendsize;
+	u_int recvsize;
+{
+	bool_t madesock = FALSE;
+	register SVCXPRT *xprt;
+	register struct tcp_rendezvous *r;
+	struct sockaddr_in addr;
+	int len = sizeof(struct sockaddr_in);
+
+	if (sock == RPC_ANYSOCK) {
+		if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) {
+			perror("svctcp_.c - udp socket creation problem");
+			return ((SVCXPRT *)NULL);
+		}
+		madesock = TRUE;
+	}
+	bzero((char *)&addr, sizeof (addr));
+	addr.sin_family = AF_INET;
+	if (bindresvport(sock, &addr)) {
+		addr.sin_port = 0;
+		(void)bind(sock, (struct sockaddr *)&addr, len);
+	}
+	if ((getsockname(sock, (struct sockaddr *)&addr, &len) != 0)  ||
+	    (listen(sock, 2) != 0)) {
+		perror("svctcp_.c - cannot getsockname or listen");
+		if (madesock)
+		       (void)close(sock);
+		return ((SVCXPRT *)NULL);
+	}
+	r = (struct tcp_rendezvous *)mem_alloc(sizeof(*r));
+	if (r == NULL) {
+		(void) fprintf(stderr, "svctcp_create: out of memory\n");
+		return (NULL);
+	}
+	r->sendsize = sendsize;
+	r->recvsize = recvsize;
+	xprt = (SVCXPRT *)mem_alloc(sizeof(SVCXPRT));
+	if (xprt == NULL) {
+		(void) fprintf(stderr, "svctcp_create: out of memory\n");
+		return (NULL);
+	}
+	xprt->xp_p2 = NULL;
+	xprt->xp_p1 = (caddr_t)r;
+	xprt->xp_verf = _null_auth;
+	xprt->xp_ops = &svctcp_rendezvous_op;
+	xprt->xp_port = ntohs(addr.sin_port);
+	xprt->xp_sock = sock;
+	xprt_register(xprt);
+	return (xprt);
+}
+
+/*
+ * Like svtcp_create(), except the routine takes any *open* UNIX file
+ * descriptor as its first input.
+ */
+SVCXPRT *
+svcfd_create(fd, sendsize, recvsize)
+	int fd;
+	u_int sendsize;
+	u_int recvsize;
+{
+
+	return (makefd_xprt(fd, sendsize, recvsize));
+}
+
+static SVCXPRT *
+makefd_xprt(fd, sendsize, recvsize)
+	int fd;
+	u_int sendsize;
+	u_int recvsize;
+{
+	register SVCXPRT *xprt;
+	register struct tcp_conn *cd;
+
+	xprt = (SVCXPRT *)mem_alloc(sizeof(SVCXPRT));
+	if (xprt == (SVCXPRT *)NULL) {
+		(void) fprintf(stderr, "svc_tcp: makefd_xprt: out of memory\n");
+		goto done;
+	}
+	cd = (struct tcp_conn *)mem_alloc(sizeof(struct tcp_conn));
+	if (cd == (struct tcp_conn *)NULL) {
+		(void) fprintf(stderr, "svc_tcp: makefd_xprt: out of memory\n");
+		mem_free((char *) xprt, sizeof(SVCXPRT));
+		xprt = (SVCXPRT *)NULL;
+		goto done;
+	}
+	cd->strm_stat = XPRT_IDLE;
+	xdrrec_create(&(cd->xdrs), sendsize, recvsize,
+	    (caddr_t)xprt, readtcp, writetcp);
+	xprt->xp_p2 = NULL;
+	xprt->xp_p1 = (caddr_t)cd;
+	xprt->xp_verf.oa_base = cd->verf_body;
+	xprt->xp_addrlen = 0;
+	xprt->xp_ops = &svctcp_op;  /* truely deals with calls */
+	xprt->xp_port = 0;  /* this is a connection, not a rendezvouser */
+	xprt->xp_sock = fd;
+	xprt_register(xprt);
+    done:
+	return (xprt);
+}
+
+static bool_t
+rendezvous_request(xprt)
+	register SVCXPRT *xprt;
+{
+	int sock;
+	struct tcp_rendezvous *r;
+	struct sockaddr_in addr;
+	int len;
+
+	r = (struct tcp_rendezvous *)xprt->xp_p1;
+    again:
+	len = sizeof(struct sockaddr_in);
+	if ((sock = accept(xprt->xp_sock, (struct sockaddr *)&addr,
+	    &len)) < 0) {
+		if (errno == EINTR)
+			goto again;
+	       return (FALSE);
+	}
+	/*
+	 * make a new transporter (re-uses xprt)
+	 */
+	xprt = makefd_xprt(sock, r->sendsize, r->recvsize);
+	xprt->xp_raddr = addr;
+	xprt->xp_addrlen = len;
+	return (FALSE); /* there is never an rpc msg to be processed */
+}
+
+static enum xprt_stat
+rendezvous_stat()
+{
+
+	return (XPRT_IDLE);
+}
+
+static void
+svctcp_destroy(xprt)
+	register SVCXPRT *xprt;
+{
+	register struct tcp_conn *cd = (struct tcp_conn *)xprt->xp_p1;
+
+	xprt_unregister(xprt);
+	(void)close(xprt->xp_sock);
+	if (xprt->xp_port != 0) {
+		/* a rendezvouser socket */
+		xprt->xp_port = 0;
+	} else {
+		/* an actual connection socket */
+		XDR_DESTROY(&(cd->xdrs));
+	}
+	mem_free((caddr_t)cd, sizeof(struct tcp_conn));
+	mem_free((caddr_t)xprt, sizeof(SVCXPRT));
+}
+
+/*
+ * All read operations timeout after 35 seconds.
+ * A timeout is fatal for the connection.
+ */
+static struct timeval wait_per_try = { 35, 0 };
+
+/*
+ * reads data from the tcp conection.
+ * any error is fatal and the connection is closed.
+ * (And a read of zero bytes is a half closed stream => error.)
+ */
+static int
+readtcp(xprt, buf, len)
+	register SVCXPRT *xprt;
+	caddr_t buf;
+	register int len;
+{
+	register int sock = xprt->xp_sock;
+#ifdef FD_SETSIZE
+	fd_set mask;
+	fd_set readfds;
+
+	FD_ZERO(&mask);
+	FD_SET(sock, &mask);
+#else
+	register int mask = 1 << sock;
+	int readfds;
+#endif /* def FD_SETSIZE */
+	do {
+		readfds = mask;
+		if (select(_rpc_dtablesize(), &readfds, (fd_set *)NULL,
+			   (fd_set *)NULL, &wait_per_try) <= 0) {
+			if (errno == EINTR) {
+				continue;
+			}
+			goto fatal_err;
+		}
+#ifdef FD_SETSIZE
+	} while (!FD_ISSET(sock, &readfds));
+#else
+	} while (readfds != mask);
+#endif /* def FD_SETSIZE */
+	if ((len = read(sock, buf, len)) > 0) {
+		return (len);
+	}
+fatal_err:
+	((struct tcp_conn *)(xprt->xp_p1))->strm_stat = XPRT_DIED;
+	return (-1);
+}
+
+/*
+ * writes data to the tcp connection.
+ * Any error is fatal and the connection is closed.
+ */
+static int
+writetcp(xprt, buf, len)
+	register SVCXPRT *xprt;
+	caddr_t buf;
+	int len;
+{
+	register int i, cnt;
+
+	for (cnt = len; cnt > 0; cnt -= i, buf += i) {
+		if ((i = write(xprt->xp_sock, buf, cnt)) < 0) {
+			((struct tcp_conn *)(xprt->xp_p1))->strm_stat =
+			    XPRT_DIED;
+			return (-1);
+		}
+	}
+	return (len);
+}
+
+static enum xprt_stat
+svctcp_stat(xprt)
+	SVCXPRT *xprt;
+{
+	register struct tcp_conn *cd =
+	    (struct tcp_conn *)(xprt->xp_p1);
+
+	if (cd->strm_stat == XPRT_DIED)
+		return (XPRT_DIED);
+	if (! xdrrec_eof(&(cd->xdrs)))
+		return (XPRT_MOREREQS);
+	return (XPRT_IDLE);
+}
+
+static bool_t
+svctcp_recv(xprt, msg)
+	SVCXPRT *xprt;
+	register struct rpc_msg *msg;
+{
+	register struct tcp_conn *cd =
+	    (struct tcp_conn *)(xprt->xp_p1);
+	register XDR *xdrs = &(cd->xdrs);
+
+	xdrs->x_op = XDR_DECODE;
+	(void)xdrrec_skiprecord(xdrs);
+	if (xdr_callmsg(xdrs, msg)) {
+		cd->x_id = msg->rm_xid;
+		return (TRUE);
+	}
+	return (FALSE);
+}
+
+static bool_t
+svctcp_getargs(xprt, xdr_args, args_ptr)
+	SVCXPRT *xprt;
+	xdrproc_t xdr_args;
+	caddr_t args_ptr;
+{
+
+	return ((*xdr_args)(&(((struct tcp_conn *)(xprt->xp_p1))->xdrs), args_ptr));
+}
+
+static bool_t
+svctcp_freeargs(xprt, xdr_args, args_ptr)
+	SVCXPRT *xprt;
+	xdrproc_t xdr_args;
+	caddr_t args_ptr;
+{
+	register XDR *xdrs =
+	    &(((struct tcp_conn *)(xprt->xp_p1))->xdrs);
+
+	xdrs->x_op = XDR_FREE;
+	return ((*xdr_args)(xdrs, args_ptr));
+}
+
+static bool_t
+svctcp_reply(xprt, msg)
+	SVCXPRT *xprt;
+	register struct rpc_msg *msg;
+{
+	register struct tcp_conn *cd =
+	    (struct tcp_conn *)(xprt->xp_p1);
+	register XDR *xdrs = &(cd->xdrs);
+	register bool_t stat;
+
+	xdrs->x_op = XDR_ENCODE;
+	msg->rm_xid = cd->x_id;
+	stat = xdr_replymsg(xdrs, msg);
+	(void)xdrrec_endofrecord(xdrs, TRUE);
+	return (stat);
+}
diff --git a/lib/libc/rpc/svc_udp.c b/lib/libc/rpc/svc_udp.c
new file mode 100644
index 0000000..b071355
--- /dev/null
+++ b/lib/libc/rpc/svc_udp.c
@@ -0,0 +1,482 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)svc_udp.c 1.24 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)svc_udp.c	2.2 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: svc_udp.c,v 1.3 1995/05/30 05:41:39 rgrimes Exp $";
+#endif
+
+/*
+ * svc_udp.c,
+ * Server side for UDP/IP based RPC.  (Does some caching in the hopes of
+ * achieving execute-at-most-once semantics.)
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <rpc/rpc.h>
+#include <sys/socket.h>
+#include <errno.h>
+
+
+#define rpc_buffer(xprt) ((xprt)->xp_p1)
+#define MAX(a, b)     ((a > b) ? a : b)
+
+static bool_t		svcudp_recv();
+static bool_t		svcudp_reply();
+static enum xprt_stat	svcudp_stat();
+static bool_t		svcudp_getargs();
+static bool_t		svcudp_freeargs();
+static void		svcudp_destroy();
+
+static struct xp_ops svcudp_op = {
+	svcudp_recv,
+	svcudp_stat,
+	svcudp_getargs,
+	svcudp_reply,
+	svcudp_freeargs,
+	svcudp_destroy
+};
+
+extern int errno;
+
+/*
+ * kept in xprt->xp_p2
+ */
+struct svcudp_data {
+	u_int   su_iosz;	/* byte size of send.recv buffer */
+	u_long	su_xid;		/* transaction id */
+	XDR	su_xdrs;	/* XDR handle */
+	char	su_verfbody[MAX_AUTH_BYTES];	/* verifier body */
+	char * 	su_cache;	/* cached data, NULL if no cache */
+};
+#define	su_data(xprt)	((struct svcudp_data *)(xprt->xp_p2))
+
+/*
+ * Usage:
+ *	xprt = svcudp_create(sock);
+ *
+ * If sock<0 then a socket is created, else sock is used.
+ * If the socket, sock is not bound to a port then svcudp_create
+ * binds it to an arbitrary port.  In any (successful) case,
+ * xprt->xp_sock is the registered socket number and xprt->xp_port is the
+ * associated port number.
+ * Once *xprt is initialized, it is registered as a transporter;
+ * see (svc.h, xprt_register).
+ * The routines returns NULL if a problem occurred.
+ */
+SVCXPRT *
+svcudp_bufcreate(sock, sendsz, recvsz)
+	register int sock;
+	u_int sendsz, recvsz;
+{
+	bool_t madesock = FALSE;
+	register SVCXPRT *xprt;
+	register struct svcudp_data *su;
+	struct sockaddr_in addr;
+	int len = sizeof(struct sockaddr_in);
+
+	if (sock == RPC_ANYSOCK) {
+		if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
+			perror("svcudp_create: socket creation problem");
+			return ((SVCXPRT *)NULL);
+		}
+		madesock = TRUE;
+	}
+	bzero((char *)&addr, sizeof (addr));
+	addr.sin_family = AF_INET;
+	if (bindresvport(sock, &addr)) {
+		addr.sin_port = 0;
+		(void)bind(sock, (struct sockaddr *)&addr, len);
+	}
+	if (getsockname(sock, (struct sockaddr *)&addr, &len) != 0) {
+		perror("svcudp_create - cannot getsockname");
+		if (madesock)
+			(void)close(sock);
+		return ((SVCXPRT *)NULL);
+	}
+	xprt = (SVCXPRT *)mem_alloc(sizeof(SVCXPRT));
+	if (xprt == NULL) {
+		(void)fprintf(stderr, "svcudp_create: out of memory\n");
+		return (NULL);
+	}
+	su = (struct svcudp_data *)mem_alloc(sizeof(*su));
+	if (su == NULL) {
+		(void)fprintf(stderr, "svcudp_create: out of memory\n");
+		return (NULL);
+	}
+	su->su_iosz = ((MAX(sendsz, recvsz) + 3) / 4) * 4;
+	if ((rpc_buffer(xprt) = mem_alloc(su->su_iosz)) == NULL) {
+		(void)fprintf(stderr, "svcudp_create: out of memory\n");
+		return (NULL);
+	}
+	xdrmem_create(
+	    &(su->su_xdrs), rpc_buffer(xprt), su->su_iosz, XDR_DECODE);
+	su->su_cache = NULL;
+	xprt->xp_p2 = (caddr_t)su;
+	xprt->xp_verf.oa_base = su->su_verfbody;
+	xprt->xp_ops = &svcudp_op;
+	xprt->xp_port = ntohs(addr.sin_port);
+	xprt->xp_sock = sock;
+	xprt_register(xprt);
+	return (xprt);
+}
+
+SVCXPRT *
+svcudp_create(sock)
+	int sock;
+{
+
+	return(svcudp_bufcreate(sock, UDPMSGSIZE, UDPMSGSIZE));
+}
+
+static enum xprt_stat
+svcudp_stat(xprt)
+	SVCXPRT *xprt;
+{
+
+	return (XPRT_IDLE);
+}
+
+static bool_t
+svcudp_recv(xprt, msg)
+	register SVCXPRT *xprt;
+	struct rpc_msg *msg;
+{
+	register struct svcudp_data *su = su_data(xprt);
+	register XDR *xdrs = &(su->su_xdrs);
+	register int rlen;
+	char *reply;
+	u_long replylen;
+	static int cache_get();
+
+    again:
+	xprt->xp_addrlen = sizeof(struct sockaddr_in);
+	rlen = recvfrom(xprt->xp_sock, rpc_buffer(xprt), (int) su->su_iosz,
+	    0, (struct sockaddr *)&(xprt->xp_raddr), &(xprt->xp_addrlen));
+	if (rlen == -1 && errno == EINTR)
+		goto again;
+	if (rlen < (int)(4*sizeof(u_long)))
+		return (FALSE);
+	xdrs->x_op = XDR_DECODE;
+	XDR_SETPOS(xdrs, 0);
+	if (! xdr_callmsg(xdrs, msg))
+		return (FALSE);
+	su->su_xid = msg->rm_xid;
+	if (su->su_cache != NULL) {
+		if (cache_get(xprt, msg, &reply, &replylen)) {
+			(void) sendto(xprt->xp_sock, reply, (int) replylen, 0,
+			  (struct sockaddr *) &xprt->xp_raddr, xprt->xp_addrlen);
+			return (TRUE);
+		}
+	}
+	return (TRUE);
+}
+
+static bool_t
+svcudp_reply(xprt, msg)
+	register SVCXPRT *xprt;
+	struct rpc_msg *msg;
+{
+	register struct svcudp_data *su = su_data(xprt);
+	register XDR *xdrs = &(su->su_xdrs);
+	register int slen;
+	register bool_t stat = FALSE;
+	static void cache_set();
+
+	xdrs->x_op = XDR_ENCODE;
+	XDR_SETPOS(xdrs, 0);
+	msg->rm_xid = su->su_xid;
+	if (xdr_replymsg(xdrs, msg)) {
+		slen = (int)XDR_GETPOS(xdrs);
+		if (sendto(xprt->xp_sock, rpc_buffer(xprt), slen, 0,
+		    (struct sockaddr *)&(xprt->xp_raddr), xprt->xp_addrlen)
+		    == slen) {
+			stat = TRUE;
+			if (su->su_cache && slen >= 0) {
+				cache_set(xprt, (u_long) slen);
+			}
+		}
+	}
+	return (stat);
+}
+
+static bool_t
+svcudp_getargs(xprt, xdr_args, args_ptr)
+	SVCXPRT *xprt;
+	xdrproc_t xdr_args;
+	caddr_t args_ptr;
+{
+
+	return ((*xdr_args)(&(su_data(xprt)->su_xdrs), args_ptr));
+}
+
+static bool_t
+svcudp_freeargs(xprt, xdr_args, args_ptr)
+	SVCXPRT *xprt;
+	xdrproc_t xdr_args;
+	caddr_t args_ptr;
+{
+	register XDR *xdrs = &(su_data(xprt)->su_xdrs);
+
+	xdrs->x_op = XDR_FREE;
+	return ((*xdr_args)(xdrs, args_ptr));
+}
+
+static void
+svcudp_destroy(xprt)
+	register SVCXPRT *xprt;
+{
+	register struct svcudp_data *su = su_data(xprt);
+
+	xprt_unregister(xprt);
+	(void)close(xprt->xp_sock);
+	XDR_DESTROY(&(su->su_xdrs));
+	mem_free(rpc_buffer(xprt), su->su_iosz);
+	mem_free((caddr_t)su, sizeof(struct svcudp_data));
+	mem_free((caddr_t)xprt, sizeof(SVCXPRT));
+}
+
+
+/***********this could be a separate file*********************/
+
+/*
+ * Fifo cache for udp server
+ * Copies pointers to reply buffers into fifo cache
+ * Buffers are sent again if retransmissions are detected.
+ */
+
+#define SPARSENESS 4	/* 75% sparse */
+
+#define CACHE_PERROR(msg)	\
+	(void) fprintf(stderr,"%s\n", msg)
+
+#define ALLOC(type, size)	\
+	(type *) mem_alloc((unsigned) (sizeof(type) * (size)))
+
+#define BZERO(addr, type, size)	 \
+	bzero((char *) addr, sizeof(type) * (int) (size))
+
+/*
+ * An entry in the cache
+ */
+typedef struct cache_node *cache_ptr;
+struct cache_node {
+	/*
+	 * Index into cache is xid, proc, vers, prog and address
+	 */
+	u_long cache_xid;
+	u_long cache_proc;
+	u_long cache_vers;
+	u_long cache_prog;
+	struct sockaddr_in cache_addr;
+	/*
+	 * The cached reply and length
+	 */
+	char * cache_reply;
+	u_long cache_replylen;
+	/*
+ 	 * Next node on the list, if there is a collision
+	 */
+	cache_ptr cache_next;
+};
+
+
+
+/*
+ * The entire cache
+ */
+struct udp_cache {
+	u_long uc_size;		/* size of cache */
+	cache_ptr *uc_entries;	/* hash table of entries in cache */
+	cache_ptr *uc_fifo;	/* fifo list of entries in cache */
+	u_long uc_nextvictim;	/* points to next victim in fifo list */
+	u_long uc_prog;		/* saved program number */
+	u_long uc_vers;		/* saved version number */
+	u_long uc_proc;		/* saved procedure number */
+	struct sockaddr_in uc_addr; /* saved caller's address */
+};
+
+
+/*
+ * the hashing function
+ */
+#define CACHE_LOC(transp, xid)	\
+ (xid % (SPARSENESS*((struct udp_cache *) su_data(transp)->su_cache)->uc_size))
+
+
+/*
+ * Enable use of the cache.
+ * Note: there is no disable.
+ */
+svcudp_enablecache(transp, size)
+	SVCXPRT *transp;
+	u_long size;
+{
+	struct svcudp_data *su = su_data(transp);
+	struct udp_cache *uc;
+
+	if (su->su_cache != NULL) {
+		CACHE_PERROR("enablecache: cache already enabled");
+		return(0);
+	}
+	uc = ALLOC(struct udp_cache, 1);
+	if (uc == NULL) {
+		CACHE_PERROR("enablecache: could not allocate cache");
+		return(0);
+	}
+	uc->uc_size = size;
+	uc->uc_nextvictim = 0;
+	uc->uc_entries = ALLOC(cache_ptr, size * SPARSENESS);
+	if (uc->uc_entries == NULL) {
+		CACHE_PERROR("enablecache: could not allocate cache data");
+		return(0);
+	}
+	BZERO(uc->uc_entries, cache_ptr, size * SPARSENESS);
+	uc->uc_fifo = ALLOC(cache_ptr, size);
+	if (uc->uc_fifo == NULL) {
+		CACHE_PERROR("enablecache: could not allocate cache fifo");
+		return(0);
+	}
+	BZERO(uc->uc_fifo, cache_ptr, size);
+	su->su_cache = (char *) uc;
+	return(1);
+}
+
+
+/*
+ * Set an entry in the cache
+ */
+static void
+cache_set(xprt, replylen)
+	SVCXPRT *xprt;
+	u_long replylen;
+{
+	register cache_ptr victim;
+	register cache_ptr *vicp;
+	register struct svcudp_data *su = su_data(xprt);
+	struct udp_cache *uc = (struct udp_cache *) su->su_cache;
+	u_int loc;
+	char *newbuf;
+
+	/*
+ 	 * Find space for the new entry, either by
+	 * reusing an old entry, or by mallocing a new one
+	 */
+	victim = uc->uc_fifo[uc->uc_nextvictim];
+	if (victim != NULL) {
+		loc = CACHE_LOC(xprt, victim->cache_xid);
+		for (vicp = &uc->uc_entries[loc];
+		  *vicp != NULL && *vicp != victim;
+		  vicp = &(*vicp)->cache_next)
+				;
+		if (*vicp == NULL) {
+			CACHE_PERROR("cache_set: victim not found");
+			return;
+		}
+		*vicp = victim->cache_next;	/* remote from cache */
+		newbuf = victim->cache_reply;
+	} else {
+		victim = ALLOC(struct cache_node, 1);
+		if (victim == NULL) {
+			CACHE_PERROR("cache_set: victim alloc failed");
+			return;
+		}
+		newbuf = mem_alloc(su->su_iosz);
+		if (newbuf == NULL) {
+			CACHE_PERROR("cache_set: could not allocate new rpc_buffer");
+			return;
+		}
+	}
+
+	/*
+	 * Store it away
+	 */
+	victim->cache_replylen = replylen;
+	victim->cache_reply = rpc_buffer(xprt);
+	rpc_buffer(xprt) = newbuf;
+	xdrmem_create(&(su->su_xdrs), rpc_buffer(xprt), su->su_iosz, XDR_ENCODE);
+	victim->cache_xid = su->su_xid;
+	victim->cache_proc = uc->uc_proc;
+	victim->cache_vers = uc->uc_vers;
+	victim->cache_prog = uc->uc_prog;
+	victim->cache_addr = uc->uc_addr;
+	loc = CACHE_LOC(xprt, victim->cache_xid);
+	victim->cache_next = uc->uc_entries[loc];
+	uc->uc_entries[loc] = victim;
+	uc->uc_fifo[uc->uc_nextvictim++] = victim;
+	uc->uc_nextvictim %= uc->uc_size;
+}
+
+/*
+ * Try to get an entry from the cache
+ * return 1 if found, 0 if not found
+ */
+static
+cache_get(xprt, msg, replyp, replylenp)
+	SVCXPRT *xprt;
+	struct rpc_msg *msg;
+	char **replyp;
+	u_long *replylenp;
+{
+	u_int loc;
+	register cache_ptr ent;
+	register struct svcudp_data *su = su_data(xprt);
+	register struct udp_cache *uc = (struct udp_cache *) su->su_cache;
+
+#	define EQADDR(a1, a2)	(bcmp((char*)&a1, (char*)&a2, sizeof(a1)) == 0)
+
+	loc = CACHE_LOC(xprt, su->su_xid);
+	for (ent = uc->uc_entries[loc]; ent != NULL; ent = ent->cache_next) {
+		if (ent->cache_xid == su->su_xid &&
+		  ent->cache_proc == uc->uc_proc &&
+		  ent->cache_vers == uc->uc_vers &&
+		  ent->cache_prog == uc->uc_prog &&
+		  EQADDR(ent->cache_addr, uc->uc_addr)) {
+			*replyp = ent->cache_reply;
+			*replylenp = ent->cache_replylen;
+			return(1);
+		}
+	}
+	/*
+	 * Failed to find entry
+	 * Remember a few things so we can do a set later
+	 */
+	uc->uc_proc = msg->rm_call.cb_proc;
+	uc->uc_vers = msg->rm_call.cb_vers;
+	uc->uc_prog = msg->rm_call.cb_prog;
+	uc->uc_addr = xprt->xp_raddr;
+	return(0);
+}
+
diff --git a/lib/libc/stdio/Makefile.inc b/lib/libc/stdio/Makefile.inc
new file mode 100644
index 0000000..5ca5016
--- /dev/null
+++ b/lib/libc/stdio/Makefile.inc
@@ -0,0 +1,40 @@
+#	@(#)Makefile.inc	8.3 (Berkeley) 4/17/94
+
+# stdio sources
+.PATH: ${.CURDIR}/stdio
+
+SRCS+=	clrerr.c fclose.c fdopen.c feof.c ferror.c fflush.c fgetc.c \
+	fgetln.c fgetpos.c fgets.c fileno.c findfp.c flags.c fopen.c \
+	fprintf.c fpurge.c fputc.c fputs.c fread.c freopen.c fscanf.c \
+	fseek.c fsetpos.c ftell.c funopen.c fvwrite.c fwalk.c fwrite.c \
+	getc.c getchar.c gets.c getw.c makebuf.c mktemp.c perror.c \
+	printf.c putc.c putchar.c puts.c putw.c refill.c remove.c rewind.c \
+	rget.c scanf.c setbuf.c setbuffer.c setvbuf.c snprintf.c sprintf.c \
+	sscanf.c stdio.c tempnam.c tmpfile.c tmpnam.c ungetc.c vfprintf.c \
+	vfscanf.c vprintf.c vscanf.c vsnprintf.c vsprintf.c vsscanf.c \
+	wbuf.c wsetup.c
+
+MAN3+=	stdio/fclose.3 stdio/ferror.3 stdio/fflush.3 stdio/fgetln.3 \
+	stdio/fgets.3 stdio/fopen.3 stdio/fputs.3 stdio/fread.3 stdio/fseek.3 \
+	stdio/funopen.3 stdio/getc.3 stdio/mktemp.3 stdio/printf.3 \
+	stdio/putc.3 stdio/remove.3 stdio/scanf.3 stdio/setbuf.3 \
+	stdio/stdio.3 stdio/tmpnam.3 stdio/ungetc.3
+
+MLINKS+=ferror.3 clearerr.3 ferror.3 feof.3 ferror.3 fileno.3
+MLINKS+=fflush.3 fpurge.3
+MLINKS+=fgets.3 gets.3
+MLINKS+=fopen.3 fdopen.3 fopen.3 freopen.3
+MLINKS+=fputs.3 puts.3
+MLINKS+=fread.3 fwrite.3
+MLINKS+=fseek.3 fgetpos.3 fseek.3 fsetpos.3 fseek.3 ftell.3 fseek.3 rewind.3
+MLINKS+=funopen.3 fropen.3 funopen.3 fwopen.3
+MLINKS+=getc.3 fgetc.3 getc.3 getchar.3 getc.3 getw.3
+MLINKS+=mktemp.3 mkstemp.3
+MLINKS+=printf.3 fprintf.3 printf.3 snprintf.3 printf.3 sprintf.3 \
+	printf.3 vfprintf.3 printf.3 vprintf.3 printf.3 vsnprintf.3 \
+	printf.3 vsprintf.3
+MLINKS+=putc.3 fputc.3 putc.3 putchar.3 putc.3 putw.3
+MLINKS+=scanf.3 fscanf.3 scanf.3 sscanf.3 scanf.3 vfscanf.3 scanf.3 vscanf.3 \
+	scanf.3 vsscanf.3
+MLINKS+=setbuf.3 setbuffer.3 setbuf.3 setlinebuf.3 setbuf.3 setvbuf.3
+MLINKS+=tmpnam.3 tempnam.3 tmpnam.3 tmpfile.3
diff --git a/lib/libc/stdio/clrerr.c b/lib/libc/stdio/clrerr.c
new file mode 100644
index 0000000..de4526e
--- /dev/null
+++ b/lib/libc/stdio/clrerr.c
@@ -0,0 +1,49 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)clrerr.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#undef	clearerr
+
+void
+clearerr(fp)
+	FILE *fp;
+{
+	__sclearerr(fp);
+}
diff --git a/lib/libc/stdio/fclose.3 b/lib/libc/stdio/fclose.3
new file mode 100644
index 0000000..77f3316
--- /dev/null
+++ b/lib/libc/stdio/fclose.3
@@ -0,0 +1,93 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)fclose.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt FCLOSE 3
+.Os
+.Sh NAME
+.Nm fclose
+.Nd close a stream
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft int
+.Fn fclose "FILE *stream"
+.Sh DESCRIPTION
+The
+.Fn fclose
+function
+dissociates the named
+.Fa stream
+from its underlying file or set of functions.
+If the stream was being used for output, any buffered data is written
+first, using
+.Xr fflush 3 .
+.Sh RETURN VALUES
+Upon successful completion 0 is returned.
+Otherwise,
+.Dv EOF
+is returned and the global variable
+.Va errno
+is set to indicate the error.
+In either case no further access to the stream is possible.
+.Sh ERRORS
+.Bl -tag -width [EBADF]
+.It Bq Er EBADF
+The argument
+.Fa stream
+is not an open stream.
+.El
+.Pp
+The
+.Fn fclose
+function
+may also fail and set
+.Va errno
+for any of the errors specified for the routines
+.Xr close 2
+or
+.Xr fflush 3 .
+.Sh SEE ALSO
+.Xr close 2 ,
+.Xr fflush 3 ,
+.Xr fopen 3 ,
+.Xr setbuf 3
+.Sh STANDARDS
+The
+.Fn fclose
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/stdio/fclose.c b/lib/libc/stdio/fclose.c
new file mode 100644
index 0000000..8315c3c
--- /dev/null
+++ b/lib/libc/stdio/fclose.c
@@ -0,0 +1,67 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fclose.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "local.h"
+
+fclose(fp)
+	register FILE *fp;
+{
+	register int r;
+
+	if (fp->_flags == 0) {	/* not open! */
+		errno = EBADF;
+		return (EOF);
+	}
+	r = fp->_flags & __SWR ? __sflush(fp) : 0;
+	if (fp->_close != NULL && (*fp->_close)(fp->_cookie) < 0)
+		r = EOF;
+	if (fp->_flags & __SMBF)
+		free((char *)fp->_bf._base);
+	if (HASUB(fp))
+		FREEUB(fp);
+	if (HASLB(fp))
+		FREELB(fp);
+	fp->_flags = 0;		/* Release this FILE for reuse. */
+	fp->_r = fp->_w = 0;	/* Mess up if reaccessed. */
+	return (r);
+}
diff --git a/lib/libc/stdio/fdopen.c b/lib/libc/stdio/fdopen.c
new file mode 100644
index 0000000..48ea401
--- /dev/null
+++ b/lib/libc/stdio/fdopen.c
@@ -0,0 +1,89 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fdopen.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <errno.h>
+#include "local.h"
+
+FILE *
+fdopen(fd, mode)
+	int fd;
+	const char *mode;
+{
+	register FILE *fp;
+	static int nofile;
+	int flags, oflags, fdflags, tmp;
+
+	if (nofile == 0)
+		nofile = getdtablesize();
+
+	if ((flags = __sflags(mode, &oflags)) == 0)
+		return (NULL);
+
+	/* Make sure the mode the user wants is a subset of the actual mode. */
+	if ((fdflags = fcntl(fd, F_GETFL, 0)) < 0)
+		return (NULL);
+	tmp = fdflags & O_ACCMODE;
+	if (tmp != O_RDWR && (tmp != (oflags & O_ACCMODE))) {
+		errno = EINVAL;
+		return (NULL);
+	}
+
+	if ((fp = __sfp()) == NULL)
+		return (NULL);
+	fp->_flags = flags;
+	/*
+	 * If opened for appending, but underlying descriptor does not have
+	 * O_APPEND bit set, assert __SAPP so that __swrite() will lseek to
+	 * end before each write.
+	 */
+	if ((oflags & O_APPEND) && !(fdflags & O_APPEND))
+		fp->_flags |= __SAPP;
+	fp->_file = fd;
+	fp->_cookie = fp;
+	fp->_read = __sread;
+	fp->_write = __swrite;
+	fp->_seek = __sseek;
+	fp->_close = __sclose;
+	return (fp);
+}
diff --git a/lib/libc/stdio/feof.c b/lib/libc/stdio/feof.c
new file mode 100644
index 0000000..7f58057
--- /dev/null
+++ b/lib/libc/stdio/feof.c
@@ -0,0 +1,52 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)feof.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+/*
+ * A subroutine version of the macro feof.
+ */
+#undef feof
+
+feof(fp)
+	FILE *fp;
+{
+	return (__sfeof(fp));
+}
diff --git a/lib/libc/stdio/ferror.3 b/lib/libc/stdio/ferror.3
new file mode 100644
index 0000000..411999d
--- /dev/null
+++ b/lib/libc/stdio/ferror.3
@@ -0,0 +1,100 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)ferror.3	8.2 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt FERROR 3
+.Os
+.Sh NAME
+.Nm clearerr ,
+.Nm feof ,
+.Nm ferror ,
+.Nm fileno
+.Nd check and reset stream status
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft void
+.Fn clearerr "FILE *stream"
+.Ft int
+.Fn feof "FILE *stream"
+.Ft int
+.Fn ferror "FILE *stream"
+.Ft int
+.Fn fileno "FILE *stream"
+.Sh DESCRIPTION
+The function
+.Fn clearerr
+clears the end-of-file and error indicators for the stream pointed
+to by
+.Fa stream .
+.Pp
+The function
+.Fn feof
+tests the end-of-file indicator for the stream pointed to by
+.Fa stream ,
+returning non-zero if it is set.
+The end-of-file indicator can only be cleared by the function
+.Fn clearerr .
+.Pp
+The function
+.Fn ferror
+tests the error indicator for the stream pointed to by
+.Fa stream ,
+returning non-zero if it is set.
+The error indicator can only be reset by the
+.Fn clearerr
+function.
+.Pp
+The function
+.Fn fileno
+examines the argument
+.Fa stream
+and returns its integer descriptor.
+.Sh ERRORS
+These functions should not fail and do not set the external
+variable
+.Va errno .
+.Sh SEE ALSO
+.Xr open 2 ,
+.Xr stdio 3
+.Sh STANDARDS
+The functions
+.Fn clearerr ,
+.Fn feof ,
+and
+.Fn ferror
+conform to
+.St -ansiC .
diff --git a/lib/libc/stdio/ferror.c b/lib/libc/stdio/ferror.c
new file mode 100644
index 0000000..27ca107
--- /dev/null
+++ b/lib/libc/stdio/ferror.c
@@ -0,0 +1,52 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ferror.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+/*
+ * A subroutine version of the macro ferror.
+ */
+#undef ferror
+
+ferror(fp)
+	FILE *fp;
+{
+	return (__sferror(fp));
+}
diff --git a/lib/libc/stdio/fflush.3 b/lib/libc/stdio/fflush.3
new file mode 100644
index 0000000..ce3f1b7
--- /dev/null
+++ b/lib/libc/stdio/fflush.3
@@ -0,0 +1,110 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)fflush.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt FFLUSH 3
+.Os
+.Sh NAME
+.Nm fflush ,
+.Nm fpurge
+.Nd flush a stream
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft int
+.Fn fflush "FILE *stream"
+.Ft int
+.Fn fpurge "FILE *stream"
+.Sh DESCRIPTION
+The function
+.Fn fflush
+forces a write of all buffered data for the given output or update
+.Fa stream
+via the stream's underlying write function.
+The open status of the stream is unaffected.
+.Pp
+If the
+.Fa stream
+argument is
+.Dv NULL ,
+.Fn fflush
+flushes
+.Em all
+open output streams.
+.Pp
+The function
+.Fn fpurge
+erases any input or output buffered in the given
+.Fa stream .
+For output streams this discards any unwritten output.
+For input streams this discards any input read from the underlying object
+but not yet obtained via
+.Xr getc 3 ;
+this includes any text pushed back via
+.Xr ungetc .
+.Sh RETURN VALUES
+Upon successful completion 0 is returned.
+Otherwise,
+.Dv EOF
+is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Bl -tag -width [EBADF]
+.It Bq Er EBADF
+.Fa Stream
+is not an open stream, or, in the case of
+.Fn fflush ,
+not a stream open for writing.
+.El
+.Pp
+The function
+.Fn fflush
+may also fail and set
+.Va errno
+for any of the errors specified for the routine
+.Xr write 2 .
+.Sh SEE ALSO
+.Xr write 2 ,
+.Xr fopen 3 ,
+.Xr fclose 3 ,
+.Xr setbuf 3
+.Sh STANDARDS
+The
+.Fn fflush
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/stdio/fflush.c b/lib/libc/stdio/fflush.c
new file mode 100644
index 0000000..4a5cf0f
--- /dev/null
+++ b/lib/libc/stdio/fflush.c
@@ -0,0 +1,89 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fflush.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <errno.h>
+#include <stdio.h>
+#include "local.h"
+
+/* Flush a single file, or (if fp is NULL) all files.  */
+fflush(fp)
+	register FILE *fp;
+{
+
+	if (fp == NULL)
+		return (_fwalk(__sflush));
+	if ((fp->_flags & (__SWR | __SRW)) == 0) {
+		errno = EBADF;
+		return (EOF);
+	}
+	return (__sflush(fp));
+}
+
+__sflush(fp)
+	register FILE *fp;
+{
+	register unsigned char *p;
+	register int n, t;
+
+	t = fp->_flags;
+	if ((t & __SWR) == 0)
+		return (0);
+
+	if ((p = fp->_bf._base) == NULL)
+		return (0);
+
+	n = fp->_p - p;		/* write this much */
+
+	/*
+	 * Set these immediately to avoid problems with longjmp and to allow
+	 * exchange buffering (via setvbuf) in user write function.
+	 */
+	fp->_p = p;
+	fp->_w = t & (__SLBF|__SNBF) ? 0 : fp->_bf._size;
+
+	for (; n > 0; n -= t, p += t) {
+		t = (*fp->_write)(fp->_cookie, (char *)p, n);
+		if (t <= 0) {
+			fp->_flags |= __SERR;
+			return (EOF);
+		}
+	}
+	return (0);
+}
diff --git a/lib/libc/stdio/fgetc.c b/lib/libc/stdio/fgetc.c
new file mode 100644
index 0000000..800846c
--- /dev/null
+++ b/lib/libc/stdio/fgetc.c
@@ -0,0 +1,47 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fgetc.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+fgetc(fp)
+	FILE *fp;
+{
+	return (__sgetc(fp));
+}
diff --git a/lib/libc/stdio/fgetln.3 b/lib/libc/stdio/fgetln.3
new file mode 100644
index 0000000..60089ea
--- /dev/null
+++ b/lib/libc/stdio/fgetln.3
@@ -0,0 +1,123 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)fgetln.3	8.3 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt FGETLN 3
+.Os
+.Sh NAME
+.Nm fgetln
+.Nd get a line from a stream
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft char *
+.Fn fgetln "FILE *stream" "size_t *len"
+.Sh DESCRIPTION
+The
+.Fn fgetln
+function
+returns a pointer to the next line from the stream referenced by
+.Fa stream .
+This line is
+.Em not
+a C string as it does not end with a terminating
+.Dv NUL
+character.
+The length of the line, including the final newline,
+is stored in the memory location to which
+.Fa len
+points.
+(Note, however, that if the line is the last
+in a file that does not end in a newline,
+the returned text will not contain a newline.)
+.Sh RETURN VALUES
+Upon successful completion a pointer is returned;
+this pointer becomes invalid after the next
+.Tn I/O
+operation on
+.Fa stream
+(whether successful or not)
+or as soon as the stream is closed.
+Otherwise,
+.Dv NULL
+is returned.
+The
+.Fn fgetln
+function
+does not distinguish between end-of-file and error; the routines
+.Xr feof 3
+and
+.Xr ferror 3
+must be used
+to determine which occurred.
+If an error occurs, the global variable
+.Va errno
+is set to indicate the error.
+The end-of-file condition is remembered, even on a terminal, and all
+subsequent attempts to read will return
+.Dv NULL
+until the condition is
+cleared with
+.Xr clearerr 3 .
+.Pp
+The text to which the returned pointer points may be modified,
+provided that no changes are made beyond the returned size.
+These changes are lost as soon as the pointer becomes invalid.
+.Sh ERRORS
+.Bl -tag -width [EBADF]
+.It Bq Er EBADF
+The argument
+.Fa stream
+is not a stream open for reading.
+.El
+.Pp
+The
+.Fn fgetln
+function
+may also fail and set
+.Va errno
+for any of the errors specified for the routines
+.Xr fflush 3 ,
+.Xr malloc 3 ,
+.Xr read 2 ,
+.Xr stat 2 ,
+or
+.Xr realloc 3 .
+.Sh SEE ALSO
+.Xr ferror 3 ,
+.Xr fgets 3 ,
+.Xr fopen 3 ,
+.Xr putc 3
+.Sh HISTORY
+The
+.Fn fgetln
+function first appeared in 4.4BSD.
diff --git a/lib/libc/stdio/fgetln.c b/lib/libc/stdio/fgetln.c
new file mode 100644
index 0000000..ec81a2d
--- /dev/null
+++ b/lib/libc/stdio/fgetln.c
@@ -0,0 +1,160 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fgetln.c	8.2 (Berkeley) 1/2/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "local.h"
+
+/*
+ * Expand the line buffer.  Return -1 on error.
+#ifdef notdef
+ * The `new size' does not account for a terminating '\0',
+ * so we add 1 here.
+#endif
+ */
+__slbexpand(fp, newsize)
+	FILE *fp;
+	size_t newsize;
+{
+	void *p;
+
+#ifdef notdef
+	++newsize;
+#endif
+	if (fp->_lb._size >= newsize)
+		return (0);
+	if ((p = realloc(fp->_lb._base, newsize)) == NULL)
+		return (-1);
+	fp->_lb._base = p;
+	fp->_lb._size = newsize;
+	return (0);
+}
+
+/*
+ * Get an input line.  The returned pointer often (but not always)
+ * points into a stdio buffer.  Fgetln does not alter the text of
+ * the returned line (which is thus not a C string because it will
+ * not necessarily end with '\0'), but does allow callers to modify
+ * it if they wish.  Thus, we set __SMOD in case the caller does.
+ */
+char *
+fgetln(fp, lenp)
+	register FILE *fp;
+	size_t *lenp;
+{
+	register unsigned char *p;
+	register size_t len;
+	size_t off;
+
+	/* make sure there is input */
+	if (fp->_r <= 0 && __srefill(fp)) {
+		*lenp = 0;
+		return (NULL);
+	}
+
+	/* look for a newline in the input */
+	if ((p = memchr((void *)fp->_p, '\n', fp->_r)) != NULL) {
+		register char *ret;
+
+		/*
+		 * Found one.  Flag buffer as modified to keep fseek from
+		 * `optimising' a backward seek, in case the user stomps on
+		 * the text.
+		 */
+		p++;		/* advance over it */
+		ret = (char *)fp->_p;
+		*lenp = len = p - fp->_p;
+		fp->_flags |= __SMOD;
+		fp->_r -= len;
+		fp->_p = p;
+		return (ret);
+	}
+
+	/*
+	 * We have to copy the current buffered data to the line buffer.
+	 * As a bonus, though, we can leave off the __SMOD.
+	 *
+	 * OPTIMISTIC is length that we (optimistically) expect will
+	 * accomodate the `rest' of the string, on each trip through the
+	 * loop below.
+	 */
+#define OPTIMISTIC 80
+
+	for (len = fp->_r, off = 0;; len += fp->_r) {
+		register size_t diff;
+
+		/*
+		 * Make sure there is room for more bytes.  Copy data from
+		 * file buffer to line buffer, refill file and look for
+		 * newline.  The loop stops only when we find a newline.
+		 */
+		if (__slbexpand(fp, len + OPTIMISTIC))
+			goto error;
+		(void)memcpy((void *)(fp->_lb._base + off), (void *)fp->_p,
+		    len - off);
+		off = len;
+		if (__srefill(fp))
+			break;	/* EOF or error: return partial line */
+		if ((p = memchr((void *)fp->_p, '\n', fp->_r)) == NULL)
+			continue;
+
+		/* got it: finish up the line (like code above) */
+		p++;
+		diff = p - fp->_p;
+		len += diff;
+		if (__slbexpand(fp, len))
+			goto error;
+		(void)memcpy((void *)(fp->_lb._base + off), (void *)fp->_p,
+		    diff);
+		fp->_r -= diff;
+		fp->_p = p;
+		break;
+	}
+	*lenp = len;
+#ifdef notdef
+	fp->_lb._base[len] = 0;
+#endif
+	return ((char *)fp->_lb._base);
+
+error:
+	*lenp = 0;		/* ??? */
+	return (NULL);		/* ??? */
+}
diff --git a/lib/libc/stdio/fgetpos.c b/lib/libc/stdio/fgetpos.c
new file mode 100644
index 0000000..1f4ec1d
--- /dev/null
+++ b/lib/libc/stdio/fgetpos.c
@@ -0,0 +1,48 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fgetpos.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+fgetpos(fp, pos)
+	FILE *fp;
+	fpos_t *pos;
+{
+	return((*pos = ftell(fp)) == (fpos_t)-1);
+}
diff --git a/lib/libc/stdio/fgets.3 b/lib/libc/stdio/fgets.3
new file mode 100644
index 0000000..827de6b
--- /dev/null
+++ b/lib/libc/stdio/fgets.3
@@ -0,0 +1,151 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)fgets.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt FGETS 3
+.Os
+.Sh NAME
+.Nm fgets ,
+.Nm gets
+.Nd get a line from a stream
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft char *
+.Fn fgets "char *str" "size_t size" "FILE *stream"
+.Ft char *
+.Fn gets "char *str"
+.Sh DESCRIPTION
+The
+.Fn fgets
+function
+reads at most one less than the number of characters specified by
+.Xr size
+from the given
+.Fa stream
+and stores them in the string
+.Fa str .
+Reading stops when a newline character is found,
+at end-of-file or error.
+The newline, if any, is retained.
+In any case a
+.Ql \e0
+character is appended to end the string.
+.Pp
+The
+.Fn gets
+function
+is equivalent to
+.Fn fgets
+with an infinite
+.Xr size
+and a
+.Fa stream
+of
+.Em stdin ,
+except that the newline character (if any) is not stored in the string.
+It is the caller's responsibility to ensure that the input line,
+if any, is sufficiently short to fit in the string.
+.Sh RETURN VALUES
+.Pp
+Upon successful completion,
+.Fn fgets
+and 
+.Fn gets
+return
+a pointer to the string.
+If end-of-file or an error occurs before any characters are read, 
+they return
+.Dv NULL.
+The
+.Fn fgets
+and
+functions
+.Fn gets
+do not distinguish between end-of-file and error, and callers must use
+.Xr feof 3
+and
+.Xr ferror 3
+to determine which occurred.
+.Sh ERRORS
+.Bl -tag -width [EBADF]
+.It Bq Er EBADF
+The given
+.Fa stream
+is not a readable stream.
+.El
+.Pp
+The function
+.Fn fgets
+may also fail and set
+.Va errno
+for any of the errors specified for the routines
+.Xr fflush 3 ,
+.Xr fstat 2 ,
+.Xr read 2 ,
+or
+.Xr malloc 3 .
+.Pp
+The function
+.Fn gets
+may also fail and set
+.Va errno
+for any of the errors specified for the routine
+.Xr getchar 3 .
+.Sh SEE ALSO
+.Xr feof 3 ,
+.Xr ferror 3 ,
+.Xr fgetln 3
+.Sh STANDARDS
+The functions
+.Fn fgets
+and
+.Fn gets
+conform to
+.St -ansiC .
+.Sh BUGS
+Since it is usually impossible to ensure that the next input line
+is less than some arbitrary length, and because overflowing the
+input buffer is almost invariably a security violation, programs
+should
+.Em NEVER
+use
+.Fn gets .
+The
+.Fn gets
+function
+exists purely to conform to
+.St -ansiC .
diff --git a/lib/libc/stdio/fgets.c b/lib/libc/stdio/fgets.c
new file mode 100644
index 0000000..09f6877
--- /dev/null
+++ b/lib/libc/stdio/fgets.c
@@ -0,0 +1,104 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fgets.c	8.2 (Berkeley) 12/22/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <string.h>
+
+/*
+ * Read at most n-1 characters from the given file.
+ * Stop when a newline has been read, or the count runs out.
+ * Return first argument, or NULL if no characters were read.
+ */
+char *
+fgets(buf, n, fp)
+	char *buf;
+	register size_t n;
+	register FILE *fp;
+{
+	register size_t len;
+	register char *s;
+	register unsigned char *p, *t;
+
+	if (n == 0)		/* sanity check */
+		return (NULL);
+
+	s = buf;
+	n--;			/* leave space for NUL */
+	while (n != 0) {
+		/*
+		 * If the buffer is empty, refill it.
+		 */
+		if ((len = fp->_r) <= 0) {
+			if (__srefill(fp)) {
+				/* EOF/error: stop with partial or no line */
+				if (s == buf)
+					return (NULL);
+				break;
+			}
+			len = fp->_r;
+		}
+		p = fp->_p;
+
+		/*
+		 * Scan through at most n bytes of the current buffer,
+		 * looking for '\n'.  If found, copy up to and including
+		 * newline, and stop.  Otherwise, copy entire chunk
+		 * and loop.
+		 */
+		if (len > n)
+			len = n;
+		t = memchr((void *)p, '\n', len);
+		if (t != NULL) {
+			len = ++t - p;
+			fp->_r -= len;
+			fp->_p = t;
+			(void)memcpy((void *)s, (void *)p, len);
+			s[len] = 0;
+			return (buf);
+		}
+		fp->_r -= len;
+		fp->_p += len;
+		(void)memcpy((void *)s, (void *)p, len);
+		s += len;
+		n -= len;
+	}
+	*s = 0;
+	return (buf);
+}
diff --git a/lib/libc/stdio/fileno.c b/lib/libc/stdio/fileno.c
new file mode 100644
index 0000000..91e82e8
--- /dev/null
+++ b/lib/libc/stdio/fileno.c
@@ -0,0 +1,52 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fileno.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+/*
+ * A subroutine version of the macro fileno.
+ */
+#undef fileno
+
+fileno(fp)
+	FILE *fp;
+{
+	return (__sfileno(fp));
+}
diff --git a/lib/libc/stdio/findfp.c b/lib/libc/stdio/findfp.c
new file mode 100644
index 0000000..2986a2c
--- /dev/null
+++ b/lib/libc/stdio/findfp.c
@@ -0,0 +1,169 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)findfp.c	8.2 (Berkeley) 1/4/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include "local.h"
+#include "glue.h"
+
+int	__sdidinit;
+
+#define	NDYNAMIC 10		/* add ten more whenever necessary */
+
+#define	std(flags, file) \
+	{0,0,0,flags,file,{0},0,__sF+file,__sclose,__sread,__sseek,__swrite}
+/*	 p r w flags file _bf z  cookie      close    read    seek    write */
+
+				/* the usual - (stdin + stdout + stderr) */
+static FILE usual[FOPEN_MAX - 3];
+static struct glue uglue = { 0, FOPEN_MAX - 3, usual };
+
+FILE __sF[3] = {
+	std(__SRD, STDIN_FILENO),		/* stdin */
+	std(__SWR, STDOUT_FILENO),		/* stdout */
+	std(__SWR|__SNBF, STDERR_FILENO)	/* stderr */
+};
+struct glue __sglue = { &uglue, 3, __sF };
+
+static struct glue *
+moreglue(n)
+	register int n;
+{
+	register struct glue *g;
+	register FILE *p;
+	static FILE empty;
+
+	g = (struct glue *)malloc(sizeof(*g) + ALIGNBYTES + n * sizeof(FILE));
+	if (g == NULL)
+		return (NULL);
+	p = (FILE *)ALIGN(g + 1);
+	g->next = NULL;
+	g->niobs = n;
+	g->iobs = p;
+	while (--n >= 0)
+		*p++ = empty;
+	return (g);
+}
+
+/*
+ * Find a free FILE for fopen et al.
+ */
+FILE *
+__sfp()
+{
+	register FILE *fp;
+	register int n;
+	register struct glue *g;
+
+	if (!__sdidinit)
+		__sinit();
+	for (g = &__sglue;; g = g->next) {
+		for (fp = g->iobs, n = g->niobs; --n >= 0; fp++)
+			if (fp->_flags == 0)
+				goto found;
+		if (g->next == NULL && (g->next = moreglue(NDYNAMIC)) == NULL)
+			break;
+	}
+	return (NULL);
+found:
+	fp->_flags = 1;		/* reserve this slot; caller sets real flags */
+	fp->_p = NULL;		/* no current pointer */
+	fp->_w = 0;		/* nothing to read or write */
+	fp->_r = 0;
+	fp->_bf._base = NULL;	/* no buffer */
+	fp->_bf._size = 0;
+	fp->_lbfsize = 0;	/* not line buffered */
+	fp->_file = -1;		/* no file */
+/*	fp->_cookie = <any>; */	/* caller sets cookie, _read/_write etc */
+	fp->_ub._base = NULL;	/* no ungetc buffer */
+	fp->_ub._size = 0;
+	fp->_lb._base = NULL;	/* no line buffer */
+	fp->_lb._size = 0;
+	return (fp);
+}
+
+/*
+ * XXX.  Force immediate allocation of internal memory.  Not used by stdio,
+ * but documented historically for certain applications.  Bad applications.
+ */
+__warn_references(f_prealloc, 
+	"warning: this program uses f_prealloc(), which is stupid.");
+
+void
+f_prealloc()
+{
+	register struct glue *g;
+	int n;
+
+	n = getdtablesize() - FOPEN_MAX + 20;		/* 20 for slop. */
+	for (g = &__sglue; (n -= g->niobs) > 0 && g->next; g = g->next)
+		/* void */;
+	if (n > 0)
+		g->next = moreglue(n);
+}
+
+/*
+ * exit() calls _cleanup() through *__cleanup, set whenever we
+ * open or buffer a file.  This chicanery is done so that programs
+ * that do not use stdio need not link it all in.
+ *
+ * The name `_cleanup' is, alas, fairly well known outside stdio.
+ */
+void
+_cleanup()
+{
+	/* (void) _fwalk(fclose); */
+	(void) _fwalk(__sflush);		/* `cheating' */
+}
+
+/*
+ * __sinit() is called whenever stdio's internal variables must be set up.
+ */
+void
+__sinit()
+{
+	/* make sure we clean up on exit */
+	__cleanup = _cleanup;		/* conservative */
+	__sdidinit = 1;
+}
diff --git a/lib/libc/stdio/flags.c b/lib/libc/stdio/flags.c
new file mode 100644
index 0000000..ee1a76c
--- /dev/null
+++ b/lib/libc/stdio/flags.c
@@ -0,0 +1,89 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)flags.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <stdio.h>
+#include <errno.h>
+
+/*
+ * Return the (stdio) flags for a given mode.  Store the flags
+ * to be passed to an open() syscall through *optr.
+ * Return 0 on error.
+ */
+__sflags(mode, optr)
+	register char *mode;
+	int *optr;
+{
+	register int ret, m, o;
+
+	switch (*mode++) {
+
+	case 'r':	/* open for reading */
+		ret = __SRD;
+		m = O_RDONLY;
+		o = 0;
+		break;
+
+	case 'w':	/* open for writing */
+		ret = __SWR;
+		m = O_WRONLY;
+		o = O_CREAT | O_TRUNC;
+		break;
+
+	case 'a':	/* open for appending */
+		ret = __SWR;
+		m = O_WRONLY;
+		o = O_CREAT | O_APPEND;
+		break;
+
+	default:	/* illegal mode */
+		errno = EINVAL;
+		return (0);
+	}
+
+	/* [rwa]\+ or [rwa]b\+ means read and write */
+	if (*mode == '+' || (*mode == 'b' && mode[1] == '+')) {
+		ret = __SRW;
+		m = O_RDWR;
+	}
+	*optr = m | o;
+	return (ret);
+}
diff --git a/lib/libc/stdio/floatio.h b/lib/libc/stdio/floatio.h
new file mode 100644
index 0000000..c2089fe
--- /dev/null
+++ b/lib/libc/stdio/floatio.h
@@ -0,0 +1,46 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)floatio.h	8.1 (Berkeley) 6/4/93
+ */
+
+/*
+ * Floating point scanf/printf (input/output) definitions.
+ */
+
+/* 11-bit exponent (VAX G floating point) is 308 decimal digits */
+#define	MAXEXP		308
+/* 128 bit fraction takes up 39 decimal digits; max reasonable precision */
+#define	MAXFRACT	39
diff --git a/lib/libc/stdio/fopen.3 b/lib/libc/stdio/fopen.3
new file mode 100644
index 0000000..23d790c
--- /dev/null
+++ b/lib/libc/stdio/fopen.3
@@ -0,0 +1,237 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)fopen.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt FOPEN 3
+.Os
+.Sh NAME
+.Nm fopen ,
+.Nm fdopen ,
+.Nm freopen
+.Nd stream open functions
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft FILE *
+.Fn fopen "char *path" "char *mode"
+.Ft FILE *
+.Fn fdopen "int fildes" "char *mode"
+.Ft FILE *
+.Fn freopen "char *path" "char *mode" "FILE *stream"
+.Sh DESCRIPTION
+The
+.Fn fopen
+function
+opens the file whose name is the string pointed to by
+.Fa path
+and associates a stream with it.
+.Pp
+The argument
+.Fa mode
+points to a string beginning with one of the following
+sequences (Additional characters may follow these sequences.):
+.Bl -tag -width indent
+.It Dq Li r
+Open text file for reading.
+The stream is positioned at the beginning of the file.
+.It Dq Li r+
+Open for reading and writing.
+The stream is positioned at the beginning of the file.
+.It Dq Li w
+Truncate file to zero length or create text file for writing.
+The stream is positioned at the beginning of the file.
+.No It Dq Li w+
+Open for reading and writing.
+The file is created if it does not exist, otherwise it is truncated.
+The stream is positioned at the beginning of the file.
+.It Dq Li a
+Open for writing.
+The file is created if it does not exist.
+The stream is positioned at the end of the file.
+.It Dq Li a+
+Open for reading and writing.
+The file is created if it does not exist.
+The stream is positioned at the end of the file.
+.El
+.Pp
+The
+.Fa mode
+string can also include the letter ``b'' either as a third character or
+as a character between the characters in any of the two-character strings
+described above.
+This is strictly for compatibility with
+.St -ansiC
+and has no effect; the ``b'' is ignored.
+.Pp
+Any created files will have mode
+.Pf \\*q Dv S_IRUSR
+\&|
+.Dv S_IWUSR
+\&|
+.Dv S_IRGRP
+\&|
+.Dv S_IWGRP
+\&|
+.Dv S_IROTH
+\&|
+.Dv S_IWOTH Ns \\*q
+.Pq Li 0666 ,
+as modified by the process'
+umask value (see
+.Xr umask 2 ) .
+.Pp
+Reads and writes may be intermixed on read/write streams in any order,
+and do not require an intermediate seek as in previous versions of
+.Em stdio .
+This is not portable to other systems, however;
+.Tn ANSI C
+requires that
+a file positioning function intervene between output and input, unless
+an input operation encounters end-of-file.
+.Pp
+The
+.Fn fdopen
+function associates a stream with the existing file descriptor,
+.Fa fildes .
+The
+.Fa mode
+of the stream must be compatible with the mode of the file descriptor.
+.Pp
+The
+.Fn freopen
+function
+opens the file whose name is the string pointed to by
+.Fa path
+and associates the stream pointed to by
+.Fa stream
+with it.
+The original stream (if it exists) is closed.
+The
+.Fa mode
+argument is used just as in the
+.Xr fopen
+function.
+The primary use of the
+.Fn freopen
+function
+is to change the file associated with a
+standard text stream
+.Pf ( Em stderr ,
+.Em stdin ,
+or
+.Em stdout ) .
+.Sh RETURN VALUES
+Upon successful completion
+.Fn fopen ,
+.Fn fdopen
+and
+.Fn freopen
+return a
+.Tn FILE
+pointer.
+Otherwise,
+.Dv NULL
+is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Bl -tag -width [EINVAL]
+.It Bq Er EINVAL
+The
+.Fa mode
+provided to
+.Fn fopen ,
+.Fn fdopen ,
+or
+.Fn freopen
+was invalid.
+.El
+.Pp
+The
+.Fn fopen ,
+.Fn fdopen
+and
+.Fn freopen
+functions
+may also fail and set
+.Va errno
+for any of the errors specified for the routine
+.Xr malloc 3 .
+.Pp
+The
+.Fn fopen
+function
+may also fail and set
+.Va errno
+for any of the errors specified for the routine
+.Xr open 2 .
+.Pp
+The
+.Fn fdopen
+function
+may also fail and set
+.Va errno
+for any of the errors specified for the routine
+.Xr fcntl 2 .
+.Pp
+The
+.Fn freopen
+function
+may also fail and set
+.Va errno
+for any of the errors specified for the routines
+.Xr open 2 ,
+.Xr fclose 3
+and
+.Xr fflush 3 .
+.Sh SEE ALSO
+.Xr open 2 ,
+.Xr fclose 3 ,
+.Xr fseek 3 ,
+.Xr funopen 3
+.Sh STANDARDS
+The
+.Fn fopen
+and
+.Fn freopen
+functions
+conform to
+.St -ansiC .
+The
+.Fn fdopen
+function
+conforms to
+.St -p1003.1-88 .
diff --git a/lib/libc/stdio/fopen.c b/lib/libc/stdio/fopen.c
new file mode 100644
index 0000000..9199755
--- /dev/null
+++ b/lib/libc/stdio/fopen.c
@@ -0,0 +1,84 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fopen.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <errno.h>
+#include "local.h"
+
+FILE *
+fopen(file, mode)
+	const char *file;
+	const char *mode;
+{
+	register FILE *fp;
+	register int f;
+	int flags, oflags;
+
+	if ((flags = __sflags(mode, &oflags)) == 0)
+		return (NULL);
+	if ((fp = __sfp()) == NULL)
+		return (NULL);
+	if ((f = open(file, oflags, DEFFILEMODE)) < 0) {
+		fp->_flags = 0;			/* release */
+		return (NULL);
+	}
+	fp->_file = f;
+	fp->_flags = flags;
+	fp->_cookie = fp;
+	fp->_read = __sread;
+	fp->_write = __swrite;
+	fp->_seek = __sseek;
+	fp->_close = __sclose;
+
+	/*
+	 * When opening in append mode, even though we use O_APPEND,
+	 * we need to seek to the end so that ftell() gets the right
+	 * answer.  If the user then alters the seek pointer, or
+	 * the file extends, this will fail, but there is not much
+	 * we can do about this.  (We could set __SAPP and check in
+	 * fseek and ftell.)
+	 */
+	if (oflags & O_APPEND)
+		(void) __sseek((void *)fp, (fpos_t)0, SEEK_END);
+	return (fp);
+}
diff --git a/lib/libc/stdio/fprintf.c b/lib/libc/stdio/fprintf.c
new file mode 100644
index 0000000..479ee24
--- /dev/null
+++ b/lib/libc/stdio/fprintf.c
@@ -0,0 +1,68 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fprintf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+#if __STDC__
+fprintf(FILE *fp, const char *fmt, ...)
+#else
+fprintf(fp, fmt, va_alist)
+	FILE *fp;
+	char *fmt;
+	va_dcl
+#endif
+{
+	int ret;
+	va_list ap;
+
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	ret = vfprintf(fp, fmt, ap);
+	va_end(ap);
+	return (ret);
+}
diff --git a/lib/libc/stdio/fpurge.c b/lib/libc/stdio/fpurge.c
new file mode 100644
index 0000000..3bee513
--- /dev/null
+++ b/lib/libc/stdio/fpurge.c
@@ -0,0 +1,65 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fpurge.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "local.h"
+
+/*
+ * fpurge: like fflush, but without writing anything: leave the
+ * given FILE's buffer empty.
+ */
+int
+fpurge(fp)
+	register FILE *fp;
+{
+	if (!fp->_flags) {
+		errno = EBADF;
+		return(EOF);
+	}
+
+	if (HASUB(fp))
+		FREEUB(fp);
+	fp->_p = fp->_bf._base;
+	fp->_r = 0;
+	fp->_w = fp->_flags & (__SLBF|__SNBF) ? 0 : fp->_bf._size;
+	return (0);
+}
diff --git a/lib/libc/stdio/fputc.c b/lib/libc/stdio/fputc.c
new file mode 100644
index 0000000..c86f711
--- /dev/null
+++ b/lib/libc/stdio/fputc.c
@@ -0,0 +1,48 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fputc.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+fputc(c, fp)
+	int c;
+	register FILE *fp;
+{
+	return (putc(c, fp));
+}
diff --git a/lib/libc/stdio/fputs.3 b/lib/libc/stdio/fputs.3
new file mode 100644
index 0000000..5578ec2
--- /dev/null
+++ b/lib/libc/stdio/fputs.3
@@ -0,0 +1,107 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)fputs.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt FPUTS 3
+.Os
+.Sh NAME
+.Nm fputs ,
+.Nm puts
+.Nd output a line to a stream
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft int
+.Fn fputs "const char *str" "FILE *stream"
+.Ft int
+.Fn puts "const char *str"
+.Sh DESCRIPTION
+The function
+.Fn fputs
+writes the string pointed to by
+.Fa str
+to the stream pointed to by
+.Fa stream .
+.\" The terminating
+.\" .Dv NUL
+.\" character is not written.
+.Pp
+The function
+.Fn puts
+writes the string
+.Fa str ,
+and a terminating newline character,
+to the stream
+.Em stdout .
+.Sh RETURN VALUES
+The
+.Fn fputs
+function
+returns 0 on success and
+.Dv EOF
+on error;
+.Fn puts
+returns a nonnegative integer on success and
+.Dv EOF
+on error.
+.Sh ERRORS
+.Bl -tag -width [EBADF]
+.It Bq Er EBADF
+The
+.Fa stream
+supplied
+is not a writable stream.
+.El
+.Pp
+The functions
+.Fn fputs
+and
+.Fn puts
+may also fail and set
+.Va errno
+for any of the errors specified for the routines
+.Xr write 2 .
+.Sh SEE ALSO
+.Xr putc 3 ,
+.Xr ferror 3 ,
+.Xr stdio 3
+.Sh STANDARDS
+The functions
+.Fn fputs
+and
+.Fn puts
+conform to
+.St -ansiC .
diff --git a/lib/libc/stdio/fputs.c b/lib/libc/stdio/fputs.c
new file mode 100644
index 0000000..9f9be2e
--- /dev/null
+++ b/lib/libc/stdio/fputs.c
@@ -0,0 +1,60 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fputs.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <string.h>
+#include "fvwrite.h"
+
+/*
+ * Write the given string to the given file.
+ */
+fputs(s, fp)
+	const char *s;
+	FILE *fp;
+{
+	struct __suio uio;
+	struct __siov iov;
+
+	iov.iov_base = (void *)s;
+	iov.iov_len = uio.uio_resid = strlen(s);
+	uio.uio_iov = &iov;
+	uio.uio_iovcnt = 1;
+	return (__sfvwrite(fp, &uio));
+}
diff --git a/lib/libc/stdio/fread.3 b/lib/libc/stdio/fread.3
new file mode 100644
index 0000000..8dd65af
--- /dev/null
+++ b/lib/libc/stdio/fread.3
@@ -0,0 +1,106 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)fread.3	8.2 (Berkeley) 3/8/94
+.\"
+.Dd March 8, 1994
+.Dt FREAD 3
+.Os
+.Sh NAME
+.Nm fread ,
+.Nm fwrite
+.Nd binary stream input/output
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft int
+.Fn fread "void *ptr" "size_t size" "size_t nmemb" "FILE *stream"
+.Ft int
+.Fn fwrite "const void *ptr" "size_t size" "size_t nmemb" "FILE *stream"
+.Sh DESCRIPTION
+The function
+.Fn fread
+reads
+.Fa nmemb
+objects, each
+.Xr size
+bytes long, from the stream pointed to by
+.Fa stream ,
+storing them at the location given by
+.Fa ptr .
+.Pp
+The function
+.Fn fwrite
+writes
+.Fa nmemb
+objects, each
+.Fa size
+bytes long, to the stream pointed to by
+.Fa stream ,
+obtaining them from the location given by
+.Fa ptr .
+.Sh RETURN VALUES
+The functions
+.Fn fread
+and
+.Fn fwrite
+advance the file position indicator for the stream
+by the number of bytes read or written.
+They return the number of objects read or written.
+If an error occurs, or the end-of-file is reached,
+the return value is a short object count (or zero).
+.Pp
+The function
+.Fn fread
+does not distinguish between end-of-file and error, and callers
+must use
+.Xr feof 3
+and
+.Xr ferror 3
+to determine which occurred.
+The function
+.Fn fwrite
+returns a value less than
+.Fa nmemb
+only if a write error has occurred.
+.Sh SEE ALSO
+.Xr read 2 ,
+.Xr write 2
+.Sh STANDARDS
+The functions
+.Fn fread
+and
+.Fn fwrite
+conform to
+.St -ansiC .
diff --git a/lib/libc/stdio/fread.c b/lib/libc/stdio/fread.c
new file mode 100644
index 0000000..22436ec
--- /dev/null
+++ b/lib/libc/stdio/fread.c
@@ -0,0 +1,81 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fread.c	8.2 (Berkeley) 12/11/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <string.h>
+
+size_t
+fread(buf, size, count, fp)
+	void *buf;
+	size_t size, count;
+	register FILE *fp;
+{
+	register size_t resid;
+	register char *p;
+	register int r;
+	size_t total;
+
+	/*
+	 * The ANSI standard requires a return value of 0 for a count
+	 * or a size of 0.  Peculiarily, it imposes no such requirements
+	 * on fwrite; it only requires fread to be broken.
+	 */
+	if ((resid = count * size) == 0)
+		return (0);
+	if (fp->_r < 0)
+		fp->_r = 0;
+	total = resid;
+	p = buf;
+	while (resid > (r = fp->_r)) {
+		(void)memcpy((void *)p, (void *)fp->_p, (size_t)r);
+		fp->_p += r;
+		/* fp->_r = 0 ... done in __srefill */
+		p += r;
+		resid -= r;
+		if (__srefill(fp)) {
+			/* no more input: return partial result */
+			return ((total - resid) / size);
+		}
+	}
+	(void)memcpy((void *)p, (void *)fp->_p, resid);
+	fp->_r -= resid;
+	fp->_p += resid;
+	return (count);
+}
diff --git a/lib/libc/stdio/freopen.c b/lib/libc/stdio/freopen.c
new file mode 100644
index 0000000..7a8a3ef
--- /dev/null
+++ b/lib/libc/stdio/freopen.c
@@ -0,0 +1,155 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)freopen.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "local.h"
+
+/*
+ * Re-direct an existing, open (probably) file to some other file.
+ * ANSI is written such that the original file gets closed if at
+ * all possible, no matter what.
+ */
+FILE *
+freopen(file, mode, fp)
+	const char *file, *mode;
+	register FILE *fp;
+{
+	register int f;
+	int flags, isopen, oflags, sverrno, wantfd;
+
+	if ((flags = __sflags(mode, &oflags)) == 0) {
+		(void) fclose(fp);
+		return (NULL);
+	}
+
+	if (!__sdidinit)
+		__sinit();
+
+	/*
+	 * There are actually programs that depend on being able to "freopen"
+	 * descriptors that weren't originally open.  Keep this from breaking.
+	 * Remember whether the stream was open to begin with, and which file
+	 * descriptor (if any) was associated with it.  If it was attached to
+	 * a descriptor, defer closing it; freopen("/dev/stdin", "r", stdin)
+	 * should work.  This is unnecessary if it was not a Unix file.
+	 */
+	if (fp->_flags == 0) {
+		fp->_flags = __SEOF;	/* hold on to it */
+		isopen = 0;
+		wantfd = -1;
+	} else {
+		/* flush the stream; ANSI doesn't require this. */
+		if (fp->_flags & __SWR)
+			(void) __sflush(fp);
+		/* if close is NULL, closing is a no-op, hence pointless */
+		isopen = fp->_close != NULL;
+		if ((wantfd = fp->_file) < 0 && isopen) {
+			(void) (*fp->_close)(fp->_cookie);
+			isopen = 0;
+		}
+	}
+
+	/* Get a new descriptor to refer to the new file. */
+	f = open(file, oflags, DEFFILEMODE);
+	if (f < 0 && isopen) {
+		/* If out of fd's close the old one and try again. */
+		if (errno == ENFILE || errno == EMFILE) {
+			(void) (*fp->_close)(fp->_cookie);
+			isopen = 0;
+			f = open(file, oflags, DEFFILEMODE);
+		}
+	}
+	sverrno = errno;
+
+	/*
+	 * Finish closing fp.  Even if the open succeeded above, we cannot
+	 * keep fp->_base: it may be the wrong size.  This loses the effect
+	 * of any setbuffer calls, but stdio has always done this before.
+	 */
+	if (isopen)
+		(void) (*fp->_close)(fp->_cookie);
+	if (fp->_flags & __SMBF)
+		free((char *)fp->_bf._base);
+	fp->_w = 0;
+	fp->_r = 0;
+	fp->_p = NULL;
+	fp->_bf._base = NULL;
+	fp->_bf._size = 0;
+	fp->_lbfsize = 0;
+	if (HASUB(fp))
+		FREEUB(fp);
+	fp->_ub._size = 0;
+	if (HASLB(fp))
+		FREELB(fp);
+	fp->_lb._size = 0;
+
+	if (f < 0) {			/* did not get it after all */
+		fp->_flags = 0;		/* set it free */
+		errno = sverrno;	/* restore in case _close clobbered */
+		return (NULL);
+	}
+
+	/*
+	 * If reopening something that was open before on a real file, try
+	 * to maintain the descriptor.  Various C library routines (perror)
+	 * assume stderr is always fd STDERR_FILENO, even if being freopen'd.
+	 */
+	if (wantfd >= 0 && f != wantfd) {
+		if (dup2(f, wantfd) >= 0) {
+			(void) close(f);
+			f = wantfd;
+		}
+	}
+
+	fp->_flags = flags;
+	fp->_file = f;
+	fp->_cookie = fp;
+	fp->_read = __sread;
+	fp->_write = __swrite;
+	fp->_seek = __sseek;
+	fp->_close = __sclose;
+	return (fp);
+}
diff --git a/lib/libc/stdio/fscanf.c b/lib/libc/stdio/fscanf.c
new file mode 100644
index 0000000..f0e726a
--- /dev/null
+++ b/lib/libc/stdio/fscanf.c
@@ -0,0 +1,68 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fscanf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+#if __STDC__
+fscanf(FILE *fp, char const *fmt, ...) {
+	int ret;
+	va_list ap;
+
+	va_start(ap, fmt);
+#else
+fscanf(fp, fmt, va_alist)
+	FILE *fp;
+	char *fmt;
+	va_dcl
+{
+	int ret;
+	va_list ap;
+
+	va_start(ap);
+#endif
+	ret = __svfscanf(fp, fmt, ap);
+	va_end(ap);
+	return (ret);
+}
diff --git a/lib/libc/stdio/fseek.3 b/lib/libc/stdio/fseek.3
new file mode 100644
index 0000000..4d22276
--- /dev/null
+++ b/lib/libc/stdio/fseek.3
@@ -0,0 +1,188 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)fseek.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt FSEEK 3
+.Os
+.Sh NAME
+.Nm fgetpos ,
+.Nm fseek ,
+.Nm fsetpos ,
+.Nm ftell ,
+.Nm rewind
+.Nd reposition a stream
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft int
+.Fn fseek "FILE *stream" "long offset" "int whence"
+.Ft long
+.Fn ftell "FILE *stream"
+.Ft void
+.Fn rewind "FILE *stream"
+.Ft int
+.Fn fgetpos "FILE *stream" "fpos_t *pos"
+.Ft int
+.Fn fsetpos "FILE *stream" "fpos_t *pos"
+.Sh DESCRIPTION
+The
+.Fn fseek
+function sets the file position indicator for the stream pointed
+to by
+.Fa stream .
+The new position, measured in bytes, is obtained by adding
+.Fa offset
+bytes to the position specified by
+.Fa whence .
+If 
+.Fa whence
+is set to
+.Dv SEEK_SET ,
+.Dv SEEK_CUR ,
+or
+.Dv SEEK_END ,
+the offset is relative to the
+start of the file, the current position indicator, or end-of-file,
+respectively.
+A successful call to the
+.Fn fseek
+function clears the end-of-file indicator for the stream and undoes
+any effects of the
+.Xr ungetc 3
+function on the same stream.
+.Pp
+The
+.Fn ftell
+function
+obtains the current value of the file position indicator for the
+stream pointed to by
+.Fa stream .
+.Pp
+The
+.Fn rewind
+function sets the file position indicator for the stream pointed
+to by
+.Fa stream
+to the beginning of the file.
+It is equivalent to:
+.Pp
+.Dl (void)fseek(stream, 0L, SEEK_SET)
+.Pp
+except that the error indicator for the stream is also cleared
+(see
+.Xr clearerr 3 ) .
+.Pp
+The
+.Fn fgetpos
+and
+.Fn fsetpos
+functions
+are alternate interfaces equivalent to
+.Fn ftell
+and
+.Fn fseek
+(with whence set to
+.Dv SEEK_SET
+), setting and storing the current value of
+the file offset into or from the object referenced by 
+.Fa pos .
+On some
+.Pq non- Ns Tn UNIX
+systems an
+.Dq Fa fpos_t
+object may be a complex object
+and these routines may be the only way to portably reposition a text stream.
+.Sh RETURN VALUES
+The
+.Fn rewind
+function
+returns no value.
+Upon successful completion,
+.Fn fgetpos ,
+.Fn fseek ,
+.Fn fsetpos
+return 0,
+and
+.Fn ftell
+returns the current offset.
+Otherwise, \-1 is returned and the global variable errno is set to
+indicate the error.
+.Sh ERRORS
+.Bl -tag -width [EINVAL]
+.It Bq Er EBADF
+The
+.Fa stream
+specified
+is not a seekable stream.
+.It Bq Er EINVAL
+The
+.Fa whence
+argument to 
+.Fn fseek
+was not
+.Dv SEEK_SET ,
+.Dv SEEK_END ,
+or
+.Dv SEEK_CUR .
+.El
+.Pp
+The function
+.Fn fgetpos ,
+.Fn fseek ,
+.Fn fsetpos ,
+and 
+.Fn ftell
+may also fail and set
+.Va errno
+for any of the errors specified for the routines
+.Xr fflush 3 ,
+.Xr fstat 2 ,
+.Xr lseek 2 ,
+and 
+.Xr malloc 3 .
+.Sh SEE ALSO
+.Xr lseek 2
+.Sh STANDARDS
+The
+.Fn fgetpos ,
+.Fn fsetpos ,
+.Fn fseek ,
+.Fn ftell ,
+and
+.Fn rewind
+functions
+conform to
+.St -ansiC .
diff --git a/lib/libc/stdio/fseek.c b/lib/libc/stdio/fseek.c
new file mode 100644
index 0000000..9cb04ad
--- /dev/null
+++ b/lib/libc/stdio/fseek.c
@@ -0,0 +1,246 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fseek.c	8.3 (Berkeley) 1/2/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include "local.h"
+
+#define	POS_ERR	(-(fpos_t)1)
+
+/*
+ * Seek the given file to the given offset.
+ * `Whence' must be one of the three SEEK_* macros.
+ */
+int
+fseek(fp, offset, whence)
+	register FILE *fp;
+	long offset;
+	int whence;
+{
+	register fpos_t (*seekfn) __P((void *, fpos_t, int));
+	fpos_t target, curoff;
+	size_t n;
+	struct stat st;
+	int havepos;
+
+	/* make sure stdio is set up */
+	if (!__sdidinit)
+		__sinit();
+
+	/*
+	 * Have to be able to seek.
+	 */
+	if ((seekfn = fp->_seek) == NULL) {
+		errno = ESPIPE;			/* historic practice */
+		return (EOF);
+	}
+
+	/*
+	 * Change any SEEK_CUR to SEEK_SET, and check `whence' argument.
+	 * After this, whence is either SEEK_SET or SEEK_END.
+	 */
+	switch (whence) {
+
+	case SEEK_CUR:
+		/*
+		 * In order to seek relative to the current stream offset,
+		 * we have to first find the current stream offset a la
+		 * ftell (see ftell for details).
+		 */
+		if (fp->_flags & __SOFF)
+			curoff = fp->_offset;
+		else {
+			curoff = (*seekfn)(fp->_cookie, (fpos_t)0, SEEK_CUR);
+			if (curoff == -1L)
+				return (EOF);
+		}
+		if (fp->_flags & __SRD) {
+			curoff -= fp->_r;
+			if (HASUB(fp))
+				curoff -= fp->_ur;
+		} else if (fp->_flags & __SWR && fp->_p != NULL)
+			curoff += fp->_p - fp->_bf._base;
+
+		offset += curoff;
+		whence = SEEK_SET;
+		havepos = 1;
+		break;
+
+	case SEEK_SET:
+	case SEEK_END:
+		curoff = 0;		/* XXX just to keep gcc quiet */
+		havepos = 0;
+		break;
+
+	default:
+		errno = EINVAL;
+		return (EOF);
+	}
+
+	/*
+	 * Can only optimise if:
+	 *	reading (and not reading-and-writing);
+	 *	not unbuffered; and
+	 *	this is a `regular' Unix file (and hence seekfn==__sseek).
+	 * We must check __NBF first, because it is possible to have __NBF
+	 * and __SOPT both set.
+	 */
+	if (fp->_bf._base == NULL)
+		__smakebuf(fp);
+	if (fp->_flags & (__SWR | __SRW | __SNBF | __SNPT))
+		goto dumb;
+	if ((fp->_flags & __SOPT) == 0) {
+		if (seekfn != __sseek ||
+		    fp->_file < 0 || fstat(fp->_file, &st) ||
+		    (st.st_mode & S_IFMT) != S_IFREG) {
+			fp->_flags |= __SNPT;
+			goto dumb;
+		}
+		fp->_blksize = st.st_blksize;
+		fp->_flags |= __SOPT;
+	}
+
+	/*
+	 * We are reading; we can try to optimise.
+	 * Figure out where we are going and where we are now.
+	 */
+	if (whence == SEEK_SET)
+		target = offset;
+	else {
+		if (fstat(fp->_file, &st))
+			goto dumb;
+		target = st.st_size + offset;
+	}
+
+	if (!havepos) {
+		if (fp->_flags & __SOFF)
+			curoff = fp->_offset;
+		else {
+			curoff = (*seekfn)(fp->_cookie, (fpos_t)0, SEEK_CUR);
+			if (curoff == POS_ERR)
+				goto dumb;
+		}
+		curoff -= fp->_r;
+		if (HASUB(fp))
+			curoff -= fp->_ur;
+	}
+
+	/*
+	 * Compute the number of bytes in the input buffer (pretending
+	 * that any ungetc() input has been discarded).  Adjust current
+	 * offset backwards by this count so that it represents the
+	 * file offset for the first byte in the current input buffer.
+	 */
+	if (HASUB(fp)) {
+		curoff += fp->_r;	/* kill off ungetc */
+		n = fp->_up - fp->_bf._base;
+		curoff -= n;
+		n += fp->_ur;
+	} else {
+		n = fp->_p - fp->_bf._base;
+		curoff -= n;
+		n += fp->_r;
+	}
+
+	/*
+	 * If the target offset is within the current buffer,
+	 * simply adjust the pointers, clear EOF, undo ungetc(),
+	 * and return.  (If the buffer was modified, we have to
+	 * skip this; see fgetln.c.)
+	 */
+	if ((fp->_flags & __SMOD) == 0 &&
+	    target >= curoff && target < curoff + n) {
+		register int o = target - curoff;
+
+		fp->_p = fp->_bf._base + o;
+		fp->_r = n - o;
+		if (HASUB(fp))
+			FREEUB(fp);
+		fp->_flags &= ~__SEOF;
+		return (0);
+	}
+
+	/*
+	 * The place we want to get to is not within the current buffer,
+	 * but we can still be kind to the kernel copyout mechanism.
+	 * By aligning the file offset to a block boundary, we can let
+	 * the kernel use the VM hardware to map pages instead of
+	 * copying bytes laboriously.  Using a block boundary also
+	 * ensures that we only read one block, rather than two.
+	 */
+	curoff = target & ~(fp->_blksize - 1);
+	if ((*seekfn)(fp->_cookie, curoff, SEEK_SET) == POS_ERR)
+		goto dumb;
+	fp->_r = 0;
+	fp->_p = fp->_bf._base;
+	if (HASUB(fp))
+		FREEUB(fp);
+	fp->_flags &= ~__SEOF;
+	n = target - curoff;
+	if (n) {
+		if (__srefill(fp) || fp->_r < n)
+			goto dumb;
+		fp->_p += n;
+		fp->_r -= n;
+	}
+	return (0);
+
+	/*
+	 * We get here if we cannot optimise the seek ... just
+	 * do it.  Allow the seek function to change fp->_bf._base.
+	 */
+dumb:
+	if (__sflush(fp) ||
+	    (*seekfn)(fp->_cookie, (fpos_t)offset, whence) == POS_ERR) {
+		return (EOF);
+	}
+	/* success: clear EOF indicator and discard ungetc() data */
+	if (HASUB(fp))
+		FREEUB(fp);
+	fp->_p = fp->_bf._base;
+	fp->_r = 0;
+	/* fp->_w = 0; */	/* unnecessary (I think...) */
+	fp->_flags &= ~__SEOF;
+	return (0);
+}
diff --git a/lib/libc/stdio/fsetpos.c b/lib/libc/stdio/fsetpos.c
new file mode 100644
index 0000000..4dace2d
--- /dev/null
+++ b/lib/libc/stdio/fsetpos.c
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fsetpos.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+/*
+ * fsetpos: like fseek.
+ */
+fsetpos(iop, pos)
+	FILE *iop;
+	const fpos_t *pos;
+{
+	return (fseek(iop, (long)*pos, SEEK_SET));
+}
diff --git a/lib/libc/stdio/ftell.c b/lib/libc/stdio/ftell.c
new file mode 100644
index 0000000..724e543
--- /dev/null
+++ b/lib/libc/stdio/ftell.c
@@ -0,0 +1,88 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ftell.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <errno.h>
+#include "local.h"
+
+/*
+ * ftell: return current offset.
+ */
+long
+ftell(fp)
+	register const FILE *fp;
+{
+	register fpos_t pos;
+
+	if (fp->_seek == NULL) {
+		errno = ESPIPE;			/* historic practice */
+		return (-1L);
+	}
+
+	/*
+	 * Find offset of underlying I/O object, then
+	 * adjust for buffered bytes.
+	 */
+	if (fp->_flags & __SOFF)
+		pos = fp->_offset;
+	else {
+		pos = (*fp->_seek)(fp->_cookie, (fpos_t)0, SEEK_CUR);
+		if (pos == -1L)
+			return (pos);
+	}
+	if (fp->_flags & __SRD) {
+		/*
+		 * Reading.  Any unread characters (including
+		 * those from ungetc) cause the position to be
+		 * smaller than that in the underlying object.
+		 */
+		pos -= fp->_r;
+		if (HASUB(fp))
+			pos -= fp->_ur;
+	} else if (fp->_flags & __SWR && fp->_p != NULL) {
+		/*
+		 * Writing.  Any buffered characters cause the
+		 * position to be greater than that in the
+		 * underlying object.
+		 */
+		pos += fp->_p - fp->_bf._base;
+	}
+	return (pos);
+}
diff --git a/lib/libc/stdio/funopen.3 b/lib/libc/stdio/funopen.3
new file mode 100644
index 0000000..8ed9b30
--- /dev/null
+++ b/lib/libc/stdio/funopen.3
@@ -0,0 +1,168 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek.
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)funopen.3	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt FUNOPEN 3
+.Os
+.Sh NAME
+.Nm funopen ,
+.Nm fropen ,
+.Nm fwopen
+.Nd open a stream
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft FILE *
+.Fn funopen "void  *cookie" "int  (*readfn)(void *, char *, int)" "int (writefn*)(void *, const char *, int)" "fpos_t (seekfn*)(void *, fpos_t, int)" "int (closefn*)(void *)"
+.Ft FILE *
+.Fn fropen "void  *cookie" "int  (*readfn)(void *, char *, int)"
+.Ft FILE *
+.Fn fwopen "void  *cookie" "int  (*writefn)(void *, char *, int)"
+.Sh DESCRIPTION
+The
+.Fn funopen
+function
+associates a stream with up to four
+.Dq Tn I/O No functions .
+Either 
+.Fa readfn
+or
+.Fa writefn
+must be specified;
+the others can be given as an appropriately-typed
+.Dv NULL
+pointer.
+These
+.Tn I/O
+functions will be used to read, write, seek and
+close the new stream.
+.Pp
+In general, omitting a function means that any attempt to perform the
+associated operation on the resulting stream will fail.
+If the close function is omitted, closing the stream will flush 
+any buffered output and then succeed.
+.Pp
+The calling conventions of
+.Fa readfn ,
+.Fa writefn ,
+.Fa seekfn
+and
+.Fa closefn
+must match those, respectively, of
+.Xr read 2 ,
+.Xr write 2 ,
+.Xr seek 2 ,
+and
+.Xr close 2
+with the single exception that they are passed the
+.Fa cookie
+argument specified to 
+.Fn funopen
+in place of the traditional file descriptor argument.
+.Pp
+Read and write
+.Tn I/O
+functions are allowed to change the underlying buffer
+on fully buffered or line buffered streams by calling
+.Xr setvbuf 3 .
+They are also not required to completely fill or empty the buffer.
+They are not, however, allowed to change streams from unbuffered to buffered
+or to change the state of the line buffering flag.
+They must also be prepared to have read or write calls occur on buffers other
+than the one most recently specified.
+.Pp
+All user
+.Tn I/O
+functions can report an error by returning \-1.
+Additionally, all of the functions should set the external variable
+.Va errno
+appropriately if an error occurs.
+.Pp
+An error on 
+.Fn closefn
+does not keep the stream open.
+.Pp
+As a convenience, the include file
+.Aq Pa stdio.h
+defines the macros
+.Fn fropen
+and
+.Fn fwopen
+as calls to
+.Fn funopen
+with only a read or write function specified.
+.Sh RETURN VALUES
+Upon successful completion, 
+.Fn funopen
+returns a
+.Dv FILE
+pointer.
+Otherwise,
+.Dv NULL
+is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Bl -tag -width [EINVAL]
+.It Bq Er EINVAL
+The
+.Fn funopen
+function
+was called without either a read or write function.
+The
+.Fn funopen
+function
+may also fail and set
+.Va errno
+for any of the errors
+specified for the routine
+.Xr malloc 3 .
+.El
+.Sh SEE ALSO
+.Xr fcntl 2 ,
+.Xr open 2 ,
+.Xr fclose 3 ,
+.Xr fopen 3 ,
+.Xr fseek 3 ,
+.Xr setbuf 3
+.Sh HISTORY
+The
+.Fn funopen
+functions first appeared in 4.4BSD.
+.Sh BUGS
+The
+.Fn funopen
+function
+may not be portable to systems other than
+.Bx .
diff --git a/lib/libc/stdio/funopen.c b/lib/libc/stdio/funopen.c
new file mode 100644
index 0000000..4d65b68
--- /dev/null
+++ b/lib/libc/stdio/funopen.c
@@ -0,0 +1,81 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)funopen.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <errno.h>
+#include "local.h"
+
+FILE *
+funopen(cookie, readfn, writefn, seekfn, closefn)
+	const void *cookie;
+	int (*readfn)(), (*writefn)();
+#if __STDC__
+	fpos_t (*seekfn)(void *cookie, fpos_t off, int whence);
+#else
+	fpos_t (*seekfn)();
+#endif
+	int (*closefn)();
+{
+	register FILE *fp;
+	int flags;
+
+	if (readfn == NULL) {
+		if (writefn == NULL) {		/* illegal */
+			errno = EINVAL;
+			return (NULL);
+		} else
+			flags = __SWR;		/* write only */
+	} else {
+		if (writefn == NULL)
+			flags = __SRD;		/* read only */
+		else
+			flags = __SRW;		/* read-write */
+	}
+	if ((fp = __sfp()) == NULL)
+		return (NULL);
+	fp->_flags = flags;
+	fp->_file = -1;
+	fp->_cookie = (void *)cookie;
+	fp->_read = readfn;
+	fp->_write = writefn;
+	fp->_seek = seekfn;
+	fp->_close = closefn;
+	return (fp);
+}
diff --git a/lib/libc/stdio/fvwrite.c b/lib/libc/stdio/fvwrite.c
new file mode 100644
index 0000000..3ab6279
--- /dev/null
+++ b/lib/libc/stdio/fvwrite.c
@@ -0,0 +1,189 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fvwrite.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <string.h>
+#include "local.h"
+#include "fvwrite.h"
+
+/*
+ * Write some memory regions.  Return zero on success, EOF on error.
+ *
+ * This routine is large and unsightly, but most of the ugliness due
+ * to the three different kinds of output buffering is handled here.
+ */
+__sfvwrite(fp, uio)
+	register FILE *fp;
+	register struct __suio *uio;
+{
+	register size_t len;
+	register char *p;
+	register struct __siov *iov;
+	register int w, s;
+	char *nl;
+	int nlknown, nldist;
+
+	if ((len = uio->uio_resid) == 0)
+		return (0);
+	/* make sure we can write */
+	if (cantwrite(fp))
+		return (EOF);
+
+#define	MIN(a, b) ((a) < (b) ? (a) : (b))
+#define	COPY(n)	  (void)memcpy((void *)fp->_p, (void *)p, (size_t)(n))
+
+	iov = uio->uio_iov;
+	p = iov->iov_base;
+	len = iov->iov_len;
+	iov++;
+#define GETIOV(extra_work) \
+	while (len == 0) { \
+		extra_work; \
+		p = iov->iov_base; \
+		len = iov->iov_len; \
+		iov++; \
+	}
+	if (fp->_flags & __SNBF) {
+		/*
+		 * Unbuffered: write up to BUFSIZ bytes at a time.
+		 */
+		do {
+			GETIOV(;);
+			w = (*fp->_write)(fp->_cookie, p, MIN(len, BUFSIZ));
+			if (w <= 0)
+				goto err;
+			p += w;
+			len -= w;
+		} while ((uio->uio_resid -= w) != 0);
+	} else if ((fp->_flags & __SLBF) == 0) {
+		/*
+		 * Fully buffered: fill partially full buffer, if any,
+		 * and then flush.  If there is no partial buffer, write
+		 * one _bf._size byte chunk directly (without copying).
+		 *
+		 * String output is a special case: write as many bytes
+		 * as fit, but pretend we wrote everything.  This makes
+		 * snprintf() return the number of bytes needed, rather
+		 * than the number used, and avoids its write function
+		 * (so that the write function can be invalid).
+		 */
+		do {
+			GETIOV(;);
+			w = fp->_w;
+			if (fp->_flags & __SSTR) {
+				if (len < w)
+					w = len;
+				COPY(w);	/* copy MIN(fp->_w,len), */
+				fp->_w -= w;
+				fp->_p += w;
+				w = len;	/* but pretend copied all */
+			} else if (fp->_p > fp->_bf._base && len > w) {
+				/* fill and flush */
+				COPY(w);
+				/* fp->_w -= w; */ /* unneeded */
+				fp->_p += w;
+				if (fflush(fp))
+					goto err;
+			} else if (len >= (w = fp->_bf._size)) {
+				/* write directly */
+				w = (*fp->_write)(fp->_cookie, p, w);
+				if (w <= 0)
+					goto err;
+			} else {
+				/* fill and done */
+				w = len;
+				COPY(w);
+				fp->_w -= w;
+				fp->_p += w;
+			}
+			p += w;
+			len -= w;
+		} while ((uio->uio_resid -= w) != 0);
+	} else {
+		/*
+		 * Line buffered: like fully buffered, but we
+		 * must check for newlines.  Compute the distance
+		 * to the first newline (including the newline),
+		 * or `infinity' if there is none, then pretend
+		 * that the amount to write is MIN(len,nldist).
+		 */
+		nlknown = 0;
+		nldist = 0;	/* XXX just to keep gcc happy */
+		do {
+			GETIOV(nlknown = 0);
+			if (!nlknown) {
+				nl = memchr((void *)p, '\n', len);
+				nldist = nl ? nl + 1 - p : len + 1;
+				nlknown = 1;
+			}
+			s = MIN(len, nldist);
+			w = fp->_w + fp->_bf._size;
+			if (fp->_p > fp->_bf._base && s > w) {
+				COPY(w);
+				/* fp->_w -= w; */
+				fp->_p += w;
+				if (fflush(fp))
+					goto err;
+			} else if (s >= (w = fp->_bf._size)) {
+				w = (*fp->_write)(fp->_cookie, p, w);
+				if (w <= 0)
+				 	goto err;
+			} else {
+				w = s;
+				COPY(w);
+				fp->_w -= w;
+				fp->_p += w;
+			}
+			if ((nldist -= w) == 0) {
+				/* copied the newline: flush and forget */
+				if (fflush(fp))
+					goto err;
+				nlknown = 0;
+			}
+			p += w;
+			len -= w;
+		} while ((uio->uio_resid -= w) != 0);
+	}
+	return (0);
+
+err:
+	fp->_flags |= __SERR;
+	return (EOF);
+}
diff --git a/lib/libc/stdio/fvwrite.h b/lib/libc/stdio/fvwrite.h
new file mode 100644
index 0000000..ec6bc0b
--- /dev/null
+++ b/lib/libc/stdio/fvwrite.h
@@ -0,0 +1,56 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)fvwrite.h	8.1 (Berkeley) 6/4/93
+ */
+
+/*
+ * I/O descriptors for __sfvwrite().
+ */
+struct __siov {
+	void	*iov_base;
+	size_t	iov_len;
+};
+struct __suio {
+	struct	__siov *uio_iov;
+	int	uio_iovcnt;
+	int	uio_resid;
+};
+
+#if __STDC__ || c_plusplus
+extern int __sfvwrite(FILE *, struct __suio *);
+#else
+extern int __sfvwrite();
+#endif
diff --git a/lib/libc/stdio/fwalk.c b/lib/libc/stdio/fwalk.c
new file mode 100644
index 0000000..7771c41
--- /dev/null
+++ b/lib/libc/stdio/fwalk.c
@@ -0,0 +1,59 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fwalk.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <errno.h>
+#include <stdio.h>
+#include "local.h"
+#include "glue.h"
+
+_fwalk(function)
+	register int (*function)();
+{
+	register FILE *fp;
+	register int n, ret;
+	register struct glue *g;
+
+	ret = 0;
+	for (g = &__sglue; g != NULL; g = g->next)
+		for (fp = g->iobs, n = g->niobs; --n >= 0; fp++)
+			if (fp->_flags != 0)
+				ret |= (*function)(fp);
+	return (ret);
+}
diff --git a/lib/libc/stdio/fwrite.c b/lib/libc/stdio/fwrite.c
new file mode 100644
index 0000000..dbc2e97
--- /dev/null
+++ b/lib/libc/stdio/fwrite.c
@@ -0,0 +1,72 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fwrite.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include "local.h"
+#include "fvwrite.h"
+
+/*
+ * Write `count' objects (each size `size') from memory to the given file.
+ * Return the number of whole objects written.
+ */
+size_t
+fwrite(buf, size, count, fp)
+	const void *buf;
+	size_t size, count;
+	FILE *fp;
+{
+	size_t n;
+	struct __suio uio;
+	struct __siov iov;
+
+	iov.iov_base = (void *)buf;
+	uio.uio_resid = iov.iov_len = n = count * size;
+	uio.uio_iov = &iov;
+	uio.uio_iovcnt = 1;
+
+	/*
+	 * The usual case is success (__sfvwrite returns 0);
+	 * skip the divide if this happens, since divides are
+	 * generally slow and since this occurs whenever size==0.
+	 */
+	if (__sfvwrite(fp, &uio) == 0)
+		return (count);
+	return ((n - uio.uio_resid) / size);
+}
diff --git a/lib/libc/stdio/getc.3 b/lib/libc/stdio/getc.3
new file mode 100644
index 0000000..de93a19
--- /dev/null
+++ b/lib/libc/stdio/getc.3
@@ -0,0 +1,136 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getc.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETC 3
+.Os
+.Sh NAME
+.Nm fgetc ,
+.Nm getc ,
+.Nm getchar ,
+.Nm getw
+.Nd get next character or word from input stream
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft int
+.Fn fgetc "FILE *stream"
+.Ft int
+.Fn getc "FILE *stream"
+.Ft int
+.Fn getchar 
+.Ft int
+.Fn getw "FILE *stream"
+.Sh DESCRIPTION
+The
+.Fn fgetc
+function
+obtains the next input character (if present) from the stream pointed at by
+.Fa stream ,
+or the next character pushed back on the stream via
+.Xr ungetc .
+.Pp
+The
+.Fn getc
+function
+acts essentially identically to
+.Fn fgetc ,
+but is a macro that expands in-line.
+.Pp
+The
+.Fn getchar
+function
+is equivalent to:
+getc with the argument stdin.
+.Pp
+The
+.Fn getw
+function
+obtains the next
+.Em int
+(if present)
+from the stream pointed at by
+.Fa stream .
+.Sh RETURN VALUES
+If successful, these routines return the next requested object
+from the
+.Fa stream .
+If the stream is at end-of-file or a read error occurs,
+the routines return
+.Dv EOF .
+The routines
+.Xr feof 3
+and
+.Xr ferror 3
+must be used to distinguish between end-of-file and error.
+If an error occurs, the global variable
+.Va errno
+is set to indicate the error.
+The end-of-file condition is remembered, even on a terminal, and all
+subsequent attempts to read will return
+.Dv EOF
+until the condition is cleared with
+.Xr clearerr .
+.Sh SEE ALSO
+.Xr ferror 3 ,
+.Xr fread 3 ,
+.Xr fopen 3 ,
+.Xr putc 3 ,
+.Xr ungetc 3
+.Sh STANDARDS
+The
+.Fn fgetc ,
+.Fn getc
+and
+.Fn getchar
+functions
+conform to
+.St -ansiC .
+.Sh BUGS
+Since
+.Dv EOF
+is a valid integer value,
+.Xr feof
+and
+.Xr ferror
+must be used to check for failure after calling
+.Fn getw .
+The size and byte order of an
+.Em int
+varies from one machine to another, and
+.Fn getw
+is not recommended for portable applications.
+.Pp
diff --git a/lib/libc/stdio/getc.c b/lib/libc/stdio/getc.c
new file mode 100644
index 0000000..1e900cd
--- /dev/null
+++ b/lib/libc/stdio/getc.c
@@ -0,0 +1,52 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getc.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+/*
+ * A subroutine version of the macro getc.
+ */
+#undef getc
+
+getc(fp)
+	register FILE *fp;
+{
+	return (__sgetc(fp));
+}
diff --git a/lib/libc/stdio/getchar.c b/lib/libc/stdio/getchar.c
new file mode 100644
index 0000000..20e52b7
--- /dev/null
+++ b/lib/libc/stdio/getchar.c
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getchar.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * A subroutine version of the macro getchar.
+ */
+#include <stdio.h>
+
+#undef getchar
+
+getchar()
+{
+	return (getc(stdin));
+}
diff --git a/lib/libc/stdio/gets.c b/lib/libc/stdio/gets.c
new file mode 100644
index 0000000..d31aeee
--- /dev/null
+++ b/lib/libc/stdio/gets.c
@@ -0,0 +1,71 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)gets.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/cdefs.h>
+
+__warn_references(gets, "warning: this program uses gets(), which is unsafe.");
+
+char *
+gets(buf)
+	char *buf;
+{
+	register int c;
+	register char *s;
+	static int warned;
+	static char w[] =
+	    "warning: this program uses gets(), which is unsafe.\n";
+
+	if (!warned) {
+		(void) write(STDERR_FILENO, w, sizeof(w) - 1);
+		warned = 1;
+	}
+	for (s = buf; (c = getchar()) != '\n';)
+		if (c == EOF)
+			if (s == buf)
+				return (NULL);
+			else
+				break;
+		else
+			*s++ = c;
+	*s = 0;
+	return (buf);
+}
diff --git a/lib/libc/stdio/getw.c b/lib/libc/stdio/getw.c
new file mode 100644
index 0000000..5220290
--- /dev/null
+++ b/lib/libc/stdio/getw.c
@@ -0,0 +1,49 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getw.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+getw(fp)
+	FILE *fp;
+{
+	int x;
+
+	return (fread((void *)&x, sizeof(x), 1, fp) == 1 ? x : EOF);
+}
diff --git a/lib/libc/stdio/glue.h b/lib/libc/stdio/glue.h
new file mode 100644
index 0000000..5dcdaff
--- /dev/null
+++ b/lib/libc/stdio/glue.h
@@ -0,0 +1,47 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)glue.h	8.1 (Berkeley) 6/4/93
+ */
+
+/*
+ * The first few FILEs are statically allocated; others are dynamically
+ * allocated and linked in via this glue structure.
+ */
+struct glue {
+	struct	glue *next;
+	int	niobs;
+	FILE	*iobs;
+} __sglue;
diff --git a/lib/libc/stdio/local.h b/lib/libc/stdio/local.h
new file mode 100644
index 0000000..9021d74
--- /dev/null
+++ b/lib/libc/stdio/local.h
@@ -0,0 +1,87 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)local.h	8.2 (Berkeley) 1/2/94
+ */
+
+/*
+ * Information local to this implementation of stdio,
+ * in particular, macros and private variables.
+ */
+
+int	__sflush __P((FILE *));
+FILE	*__sfp __P((void));
+int	__srefill __P((FILE *));
+int	__sread __P((void *, char *, int));
+int	__swrite __P((void *, char const *, int));
+fpos_t	__sseek __P((void *, fpos_t, int));
+int	__sclose __P((void *));
+void	__sinit __P((void));
+void	_cleanup __P((void));
+void	(*__cleanup) __P((void));
+void	__smakebuf __P((FILE *));
+int	__swhatbuf __P((FILE *, size_t *, int *));
+int	_fwalk __P((int (*)(FILE *)));
+int	__swsetup __P((FILE *));
+int	__sflags __P((const char *, int *));
+
+extern int __sdidinit;
+
+/*
+ * Return true iff the given FILE cannot be written now.
+ */
+#define	cantwrite(fp) \
+	((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
+	 __swsetup(fp))
+
+/*
+ * Test whether the given stdio file has an active ungetc buffer;
+ * release such a buffer, without restoring ordinary unread data.
+ */
+#define	HASUB(fp) ((fp)->_ub._base != NULL)
+#define	FREEUB(fp) { \
+	if ((fp)->_ub._base != (fp)->_ubuf) \
+		free((char *)(fp)->_ub._base); \
+	(fp)->_ub._base = NULL; \
+}
+
+/*
+ * test for an fgetln() buffer.
+ */
+#define	HASLB(fp) ((fp)->_lb._base != NULL)
+#define	FREELB(fp) { \
+	free((char *)(fp)->_lb._base); \
+	(fp)->_lb._base = NULL; \
+}
diff --git a/lib/libc/stdio/makebuf.c b/lib/libc/stdio/makebuf.c
new file mode 100644
index 0000000..7dcbd70
--- /dev/null
+++ b/lib/libc/stdio/makebuf.c
@@ -0,0 +1,118 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)makebuf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "local.h"
+
+/*
+ * Allocate a file buffer, or switch to unbuffered I/O.
+ * Per the ANSI C standard, ALL tty devices default to line buffered.
+ *
+ * As a side effect, we set __SOPT or __SNPT (en/dis-able fseek
+ * optimisation) right after the fstat() that finds the buffer size.
+ */
+void
+__smakebuf(fp)
+	register FILE *fp;
+{
+	register void *p;
+	register int flags;
+	size_t size;
+	int couldbetty;
+
+	if (fp->_flags & __SNBF) {
+		fp->_bf._base = fp->_p = fp->_nbuf;
+		fp->_bf._size = 1;
+		return;
+	}
+	flags = __swhatbuf(fp, &size, &couldbetty);
+	if ((p = malloc(size)) == NULL) {
+		fp->_flags |= __SNBF;
+		fp->_bf._base = fp->_p = fp->_nbuf;
+		fp->_bf._size = 1;
+		return;
+	}
+	__cleanup = _cleanup;
+	flags |= __SMBF;
+	fp->_bf._base = fp->_p = p;
+	fp->_bf._size = size;
+	if (couldbetty && isatty(fp->_file))
+		flags |= __SLBF;
+	fp->_flags |= flags;
+}
+
+/*
+ * Internal routine to determine `proper' buffering for a file.
+ */
+int
+__swhatbuf(fp, bufsize, couldbetty)
+	register FILE *fp;
+	size_t *bufsize;
+	int *couldbetty;
+{
+	struct stat st;
+
+	if (fp->_file < 0 || fstat(fp->_file, &st) < 0) {
+		*couldbetty = 0;
+		*bufsize = BUFSIZ;
+		return (__SNPT);
+	}
+
+	/* could be a tty iff it is a character device */
+	*couldbetty = (st.st_mode & S_IFMT) == S_IFCHR;
+	if (st.st_blksize <= 0) {
+		*bufsize = BUFSIZ;
+		return (__SNPT);
+	}
+
+	/*
+	 * Optimise fseek() only if it is a regular file.  (The test for
+	 * __sseek is mainly paranoia.)  It is safe to set _blksize
+	 * unconditionally; it will only be used if __SOPT is also set.
+	 */
+	*bufsize = st.st_blksize;
+	fp->_blksize = st.st_blksize;
+	return ((st.st_mode & S_IFMT) == S_IFREG && fp->_seek == __sseek ?
+	    __SOPT : __SNPT);
+}
diff --git a/lib/libc/stdio/mktemp.3 b/lib/libc/stdio/mktemp.3
new file mode 100644
index 0000000..361bebf
--- /dev/null
+++ b/lib/libc/stdio/mktemp.3
@@ -0,0 +1,136 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)mktemp.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt MKTEMP 3
+.Os
+.Sh NAME
+.Nm mktemp
+.Nd make temporary file name (unique)
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft char *
+.Fn mktemp "char *template"
+.Ft int
+.Fn mkstemp "char *template"
+.Sh DESCRIPTION
+The
+.Fn mktemp
+function
+takes the given file name template and overwrites a portion of it
+to create a file name.
+This file name is unique and suitable for use
+by the application.
+The template may be any file name with some number of
+.Ql X Ns s
+appended
+to it, for example
+.Pa /tmp/temp.XXXX .
+The trailing
+.Ql X Ns s
+are replaced with the current process number and/or a
+unique letter combination.
+The number of unique file names
+.Fn mktemp
+can return depends on the number of
+.Ql X Ns s
+provided; six
+.Ql X Ns s
+will
+result in
+.Fn mktemp
+testing roughly 26 ** 6 combinations.
+.Pp
+The
+.Fn mkstemp
+function
+makes the same replacement to the template and creates the template file,
+mode 0600, returning a file descriptor opened for reading and writing.
+This avoids the race between testing for a file's existence and opening it
+for use.
+.Sh RETURN VALUES
+The
+.Fn mktemp
+function
+returns a pointer to the template on success and
+.Dv NULL
+on failure.
+The
+.Fn mkstemp
+function
+returns \-1 if no suitable file could be created.
+If either call fails an error code is placed in the global variable
+.Va errno .
+.Sh ERRORS
+The
+.Fn mktemp
+and
+.Fn mkstemp
+functions
+may set
+.Va errno
+to one of the following values:
+.Bl -tag -width [ENOTDIR]
+.It Bq Er ENOTDIR
+The pathname portion of the template is not an existing directory.
+.El
+.Pp
+The
+.Fn mktemp
+and
+.Fn mkstemp
+functions
+may also set
+.Va errno
+to any value specified by the
+.Xr stat 2
+function.
+.Pp
+The
+.Fn mkstemp
+function
+may also set
+.Va errno
+to any value specified by the
+.Xr open 2
+function.
+.Sh SEE ALSO
+.Xr chmod 2 ,
+.Xr getpid 2 ,
+.Xr open 2 ,
+.Xr stat 2
+.Sh HISTORY
+A
+.Nm mktemp
+function appeared in
+.At v7 .
diff --git a/lib/libc/stdio/mktemp.c b/lib/libc/stdio/mktemp.c
new file mode 100644
index 0000000..3f5966e
--- /dev/null
+++ b/lib/libc/stdio/mktemp.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 1987, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)mktemp.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <ctype.h>
+
+static int _gettemp();
+
+mkstemp(path)
+	char *path;
+{
+	int fd;
+
+	return (_gettemp(path, &fd) ? fd : -1);
+}
+
+char *
+mktemp(path)
+	char *path;
+{
+	return(_gettemp(path, (int *)NULL) ? path : (char *)NULL);
+}
+
+static
+_gettemp(path, doopen)
+	char *path;
+	register int *doopen;
+{
+	extern int errno;
+	register char *start, *trv;
+	struct stat sbuf;
+	u_int pid;
+
+	pid = getpid();
+	for (trv = path; *trv; ++trv);		/* extra X's get set to 0's */
+	while (*--trv == 'X') {
+		*trv = (pid % 10) + '0';
+		pid /= 10;
+	}
+
+	/*
+	 * check the target directory; if you have six X's and it
+	 * doesn't exist this runs for a *very* long time.
+	 */
+	for (start = trv + 1;; --trv) {
+		if (trv <= path)
+			break;
+		if (*trv == '/') {
+			*trv = '\0';
+			if (stat(path, &sbuf))
+				return(0);
+			if (!S_ISDIR(sbuf.st_mode)) {
+				errno = ENOTDIR;
+				return(0);
+			}
+			*trv = '/';
+			break;
+		}
+	}
+
+	for (;;) {
+		if (doopen) {
+			if ((*doopen =
+			    open(path, O_CREAT|O_EXCL|O_RDWR, 0600)) >= 0)
+				return(1);
+			if (errno != EEXIST)
+				return(0);
+		}
+		else if (stat(path, &sbuf))
+			return(errno == ENOENT ? 1 : 0);
+
+		/* tricky little algorithm for backward compatibility */
+		for (trv = start;;) {
+			if (!*trv)
+				return(0);
+			if (*trv == 'z')
+				*trv++ = 'a';
+			else {
+				if (isdigit(*trv))
+					*trv = 'a';
+				else
+					++*trv;
+				break;
+			}
+		}
+	}
+	/*NOTREACHED*/
+}
diff --git a/lib/libc/stdio/perror.c b/lib/libc/stdio/perror.c
new file mode 100644
index 0000000..57a73fc
--- /dev/null
+++ b/lib/libc/stdio/perror.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)perror.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+void
+perror(s)
+	const char *s;
+{
+	register struct iovec *v;
+	struct iovec iov[4];
+
+	v = iov;
+	if (s && *s) {
+		v->iov_base = (char *)s;
+		v->iov_len = strlen(s);
+		v++;
+		v->iov_base = ": ";
+		v->iov_len = 2;
+		v++;
+	}
+	v->iov_base = strerror(errno);
+	v->iov_len = strlen(v->iov_base);
+	v++;
+	v->iov_base = "\n";
+	v->iov_len = 1;
+	(void)writev(STDERR_FILENO, iov, (v - iov) + 1);
+}
diff --git a/lib/libc/stdio/printf.3 b/lib/libc/stdio/printf.3
new file mode 100644
index 0000000..cf64e1e
--- /dev/null
+++ b/lib/libc/stdio/printf.3
@@ -0,0 +1,638 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)printf.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt PRINTF 3
+.Os
+.Sh NAME
+.Nm printf ,
+.Nm fprintf ,
+.Nm sprintf ,
+.Nm snprintf ,
+.Nm vprintf ,
+.Nm vfprintf,
+.Nm vsprintf ,
+.Nm vsnprintf
+.Nd formatted output conversion
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft int
+.Fn printf "const char *format" ...
+.Ft int
+.Fn fprintf "FILE *stream" "const char *format" ...
+.Ft int
+.Fn sprintf "char *str" "const char *format" ...
+.Ft int
+.Fn snprintf "char *str" "size_t size" "const char *format" ...
+.\" .Ft int
+.\" .Fn smprintf "const char *format" ...
+.Fd #include <stdarg.h>
+.Ft int
+.Fn vprintf "const char *format" "va_list ap"
+.Ft int
+.Fn vfprintf "FILE *stream" "const char *format" "va_list ap"
+.Ft int
+.Fn vsprintf "char *str" "char *format" "va_list ap"
+.Ft int
+.Fn vsnprintf "char *str" "size_t size" "const char *format" "va_list ap"
+.\" .Ft int
+.\" .Fn vsmprintf "const char *format" "va_list ap"
+.Sh DESCRIPTION
+The
+.Fn printf
+family of functions produces output according to a
+.Fa format
+as described below.
+.Fn Printf
+and
+.Fn vprintf
+write output to
+.Em stdout,
+the standard output stream;
+.Fn fprintf
+and
+.Fn vfprintf
+write output to the given output
+.Fa stream ;
+.Fn sprintf ,
+.Fn snprintf ,
+.Fn vsprintf ,
+and
+.Fn vsnprintf
+write to the character string
+.Fa str .
+.\" .IR str ;
+.\" and
+.\" .I smprintf
+.\" and
+.\" .I vsmprintf
+.\" dynamically allocate a new string with
+.\" .IR malloc .
+These functions write the output under the control of a
+.Fa format
+string that specifies how subsequent arguments
+(or arguments accessed via the variable-length argument facilities of
+.Xr stdarg 3 )
+are converted for output.
+.\" Except for
+.\" .I smprintf
+.\" and
+.\" .IR vsmprintf ,
+.\" all of these functions return
+These functions return
+the number of characters printed
+(not including the trailing
+.Ql \e0
+used to end output to strings).
+.\" .I Smprintf
+.\" and
+.\" .I vsmprintf
+.\" return a pointer to a string of an appropriate length;
+.\" this pointer should be passed to
+.\" .I free
+.\" to release the associated storage
+.\" when it is no longer needed.
+.\" If sufficient space is not avaliable,
+.\" .I smprintf
+.\" and
+.\" .I vsmprintf
+.\" will return
+.\" .SM
+.\" .BR
+.Fn Snprintf
+and
+.Fn vsnprintf
+will write at most
+.Fa size Ns \-1
+of the characters printed into the output string
+(the
+.Fa size Ns 'th
+character then gets the terminating
+.Ql \e0 ) ;
+if the return value is greater than or equal to the
+.Fa size
+argument, the string was too short
+and some of the printed characters were discarded.
+.Fn Sprintf
+and
+.Fn vsprintf
+effectively assume an infinite
+.Fa size .
+.Pp
+The format string is composed of zero or more directives:
+ordinary
+.\" multibyte
+characters (not
+.Cm % ) ,
+which are copied unchanged to the output stream;
+and conversion specifications, each of which results
+in fetching zero or more subsequent arguments.
+Each conversion specification is introduced by
+the character
+.Cm % .
+The arguments must correspond properly (after type promotion)
+with the conversion specifier.
+After the
+.Cm % ,
+the following appear in sequence:
+.Bl -bullet
+.It
+Zero or more of the following flags:
+.Bl -hyphen
+.It
+A
+.Cm #
+character
+specifying that the value should be converted to an ``alternate form''.
+For 
+.Cm c ,
+.Cm d ,
+.Cm i ,
+.Cm n ,
+.Cm p ,
+.Cm s ,
+and
+.Cm u ,
+conversions, this option has no effect.
+For 
+.Cm o
+conversions, the precision of the number is increased to force the first
+character of the output string to a zero (except if a zero value is printed
+with an explicit precision of zero).
+For
+.Cm x
+and
+.Cm X
+conversions, a non-zero result has the string
+.Ql 0x
+(or
+.Ql 0X
+for
+.Cm X
+conversions) prepended to it.
+For
+.Cm e ,
+.Cm E ,
+.Cm f ,
+.Cm g ,
+and
+.Cm G ,
+conversions, the result will always contain a decimal point, even if no
+digits follow it (normally, a decimal point appears in the results of
+those conversions only if a digit follows).
+For
+.Cm g
+and
+.Cm G
+conversions, trailing zeros are not removed from the result as they
+would otherwise be.
+.It
+A zero
+.Sq Cm \&0
+character specifying zero padding.
+For all conversions except
+.Cm n ,
+the converted value is padded on the left with zeros rather than blanks.
+If a precision is given with a numeric conversion
+.Pf ( Mc d ,
+.Cm i ,
+.Cm o ,
+.Cm u ,
+.Cm i ,
+.Cm x ,
+and
+.Cm X ) ,
+the
+.Sq Cm \&0
+flag is ignored.
+.It
+A negative field width flag
+.Sq Cm \-
+indicates the converted value is to be left adjusted on the field boundary.
+Except for
+.Cm n
+conversions, the converted value is padded on the right with blanks,
+rather than on the left with blanks or zeros.
+A
+.Sq Cm \-
+overrides a
+.Sq Cm \&0
+if both are given.
+.It
+A space, specifying that a blank should be left before a positive number
+produced by a signed conversion
+.Pf ( Cm d ,
+.Cm e ,
+.Cm E ,
+.Cm f ,
+.Cm g ,
+.Cm G ,
+or
+.Cm i ) .
+.It
+A
+.Sq Cm +
+character specifying that a sign always be placed before a
+number produced by a signed conversion.
+A
+.Sq Cm +
+overrides a space if both are used.
+.El
+.It
+An optional decimal digit string specifying a minimum field width.
+If the converted value has fewer characters than the field width, it will
+be padded with spaces on the left (or right, if the left-adjustment
+flag has been given) to fill out
+the field width.
+.It
+An optional precision, in the form of a period
+.Sq Cm \&.
+followed by an
+optional digit string.  If the digit string is omitted, the precision
+is taken as zero.  This gives the minimum number of digits to appear for
+.Cm d ,
+.Cm i ,
+.Cm o ,
+.Cm u ,
+.Cm x ,
+and
+.Cm X
+conversions, the number of digits to appear after the decimal-point for
+.Cm e ,
+.Cm E ,
+and
+.Cm f
+conversions, the maximum number of significant digits for
+.Cm g
+and
+.Cm G
+conversions, or the maximum number of characters to be printed from a
+string for
+.Cm s
+conversions.
+.It
+The optional character
+.Cm h ,
+specifying that a following
+.Cm d ,
+.Cm i ,
+.Cm o ,
+.Cm u ,
+.Cm x ,
+or
+.Cm X
+conversion corresponds to a
+.Em short int
+or
+.Em unsigned short int
+argument, or that a following
+.Cm n
+conversion corresponds to a pointer to a
+.Em short int
+argument.
+.It
+The optional character
+.Cm l
+(ell) specifying that a following
+.Cm d ,
+.Cm i ,
+.Cm o ,
+.Cm u ,
+.Cm x ,
+or
+.Cm X
+conversion applies to a pointer to a
+.Em long int
+or
+.Em unsigned long int
+argument, or that a following
+.Cm n
+conversion corresponds to a pointer to a
+.Em long int
+argument.
+.It
+The optional character
+.Cm q ,
+specifying that a following
+.Cm d ,
+.Cm i ,
+.Cm o ,
+.Cm u ,
+.Cm x ,
+or
+.Cm X
+conversion corresponds to a
+.Em quad int
+or
+.Em unsigned quad int
+argument, or that a following
+.Cm n
+conversion corresponds to a pointer to a
+.Em quad int
+argument.
+.It
+The character
+.Cm L
+specifying that a following
+.Cm e ,
+.Cm E ,
+.Cm f ,
+.Cm g ,
+or
+.Cm G
+conversion corresponds to a
+.Em long double
+argument (but note that long double values are not currently supported
+by the
+.Tn VAX
+and
+.Tn Tahoe
+compilers).
+.It
+A character that specifies the type of conversion to be applied.
+.El
+.Pp
+A field width or precision, or both, may be indicated by
+an asterisk
+.Ql *
+instead of a
+digit string.
+In this case, an
+.Em int
+argument supplies the field width or precision.
+A negative field width is treated as a left adjustment flag followed by a
+positive field width; a negative precision is treated as though it were
+missing.
+.Pp
+The conversion specifiers and their meanings are:
+.Bl -tag -width "diouxX"
+.It Cm diouxX
+The
+.Em int
+(or appropriate variant) argument is converted to signed decimal
+.Pf ( Cm d
+and
+.Cm i ) ,
+unsigned octal
+.Pq Cm o ,
+unsigned decimal
+.Pq Cm u ,
+or unsigned hexadecimal
+.Pf ( Cm x
+and
+.Cm X )
+notation.  The letters
+.Cm abcdef
+are used for
+.Cm x
+conversions; the letters
+.Cm ABCDEF
+are used for
+.Cm X
+conversions.
+The precision, if any, gives the minimum number of digits that must
+appear; if the converted value requires fewer digits, it is padded on
+the left with zeros.
+.It Cm DOU
+The
+.Em long int
+argument is converted to signed decimal, unsigned octal, or unsigned
+decimal, as if the format had been
+.Cm ld ,
+.Cm lo ,
+or
+.Cm lu
+respectively.
+These conversion characters are deprecated, and will eventually disappear.
+.It Cm eE
+The
+.Em double
+argument is rounded and converted in the style
+.Sm off
+.Pf [\-]d Cm \&. No ddd Cm e No \\*(Pmdd
+.Sm on
+where there is one digit before the
+decimal-point character
+and the number of digits after it is equal to the precision;
+if the precision is missing,
+it is taken as 6; if the precision is
+zero, no decimal-point character appears.
+An
+.Cm E
+conversion uses the letter
+.Cm E
+(rather than
+.Cm e )
+to introduce the exponent.
+The exponent always contains at least two digits; if the value is zero,
+the exponent is 00.
+.It Cm f
+The
+.Em double
+argument is rounded and converted to decimal notation in the style
+.Sm off
+.Pf [-]ddd Cm \&. No ddd ,
+.Sm on
+where the number of digits after the decimal-point character
+is equal to the precision specification.
+If the precision is missing, it is taken as 6; if the precision is
+explicitly zero, no decimal-point character appears.
+If a decimal point appears, at least one digit appears before it.
+.It Cm g
+The
+.Em double
+argument is converted in style
+.Cm f
+or
+.Cm e
+(or
+.Cm E
+for
+.Cm G
+conversions).
+The precision specifies the number of significant digits.
+If the precision is missing, 6 digits are given; if the precision is zero,
+it is treated as 1.
+Style
+.Cm e
+is used if the exponent from its conversion is less than -4 or greater than
+or equal to the precision.
+Trailing zeros are removed from the fractional part of the result; a
+decimal point appears only if it is followed by at least one digit.
+.It Cm c
+The
+.Em int
+argument is converted to an
+.Em unsigned char ,
+and the resulting character is written.
+.It Cm s
+The
+.Dq Em char *
+argument is expected to be a pointer to an array of character type (pointer
+to a string).
+Characters from the array are written up to (but not including)
+a terminating
+.Dv NUL
+character;
+if a precision is specified, no more than the number specified are
+written.
+If a precision is given, no null character
+need be present; if the precision is not specified, or is greater than
+the size of the array, the array must contain a terminating
+.Dv NUL
+character.
+.It Cm p
+The
+.Dq Em void *
+pointer argument is printed in hexadecimal (as if by
+.Ql %#x
+or
+.Ql %#lx ) .
+.It Cm n
+The number of characters written so far is stored into the
+integer indicated by the
+.Dq Em int *
+(or variant) pointer argument.
+No argument is converted.
+.It Cm %
+A
+.Ql %
+is written. No argument is converted. The complete conversion specification
+is
+.Ql %% .
+.El
+.Pp
+In no case does a non-existent or small field width cause truncation of
+a field; if the result of a conversion is wider than the field width, the
+field is expanded to contain the conversion result.
+.Pp
+.Sh EXAMPLES
+.br
+To print a date and time in the form `Sunday, July 3, 10:02',
+where
+.Em weekday
+and
+.Em month
+are pointers to strings:
+.Bd -literal -offset indent
+#include <stdio.h>
+fprintf(stdout, "%s, %s %d, %.2d:%.2d\en",
+	weekday, month, day, hour, min);
+.Ed
+.Pp
+To print \*(Pi
+to five decimal places:
+.Bd -literal -offset indent
+#include <math.h>
+#include <stdio.h>
+fprintf(stdout, "pi = %.5f\en", 4 * atan(1.0));
+.Ed
+.Pp
+To allocate a 128 byte string and print into it:
+.Bd -literal -offset indent
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+char *newfmt(const char *fmt, ...)
+{
+		char *p;
+		va_list ap;
+		if ((p = malloc(128)) == NULL)
+			return (NULL);
+		va_start(ap, fmt);
+		(void) vsnprintf(p, 128, fmt, ap);
+		va_end(ap);
+		return (p);
+}
+.Ed
+.Sh SEE ALSO
+.Xr printf 1 ,
+.Xr scanf 3
+.Sh STANDARDS
+The
+.Fn fprintf ,
+.Fn printf ,
+.Fn sprintf ,
+.Fn vprintf ,
+.Fn vfprintf ,
+and
+.Fn vsprintf
+functions
+conform to
+.St -ansiC .
+.Sh HISTORY
+The functions
+.Fn snprintf
+and
+.Fn vsnprintf
+are new to this release.
+.Sh BUGS
+The conversion formats
+.Cm \&%D ,
+.Cm \&%O ,
+and
+.Cm %U
+are not standard and
+are provided only for backward compatibility.
+The effect of padding the
+.Cm %p
+format with zeros (either by the
+.Sq Cm 0
+flag or by specifying a precision), and the benign effect (i.e., none)
+of the
+.Sq Cm #
+flag on
+.Cm %n
+and
+.Cm %p
+conversions, as well as other
+nonsensical combinations such as
+.Cm %Ld ,
+are not standard; such combinations
+should be avoided.
+.Pp
+Because
+.Fn sprintf
+and
+.Fn vsprintf
+assume an infinitely long string,
+callers must be careful not to overflow the actual space;
+this is often impossible to assure.
+For safety, programmers should use the
+.Fn snprintf
+interface instead.
+Unfortunately, this interface is not portable.
diff --git a/lib/libc/stdio/printf.c b/lib/libc/stdio/printf.c
new file mode 100644
index 0000000..eb6ae83
--- /dev/null
+++ b/lib/libc/stdio/printf.c
@@ -0,0 +1,67 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)printf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+#if __STDC__
+printf(char const *fmt, ...)
+#else
+printf(fmt, va_alist)
+	char *fmt;
+	va_dcl
+#endif
+{
+	int ret;
+	va_list ap;
+
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	ret = vfprintf(stdout, fmt, ap);
+	va_end(ap);
+	return (ret);
+}
diff --git a/lib/libc/stdio/putc.3 b/lib/libc/stdio/putc.3
new file mode 100644
index 0000000..fc6e6a7
--- /dev/null
+++ b/lib/libc/stdio/putc.3
@@ -0,0 +1,129 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)putc.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt PUTC 3
+.Os
+.Sh NAME
+.Nm fputc ,
+.Nm putc ,
+.Nm putchar ,
+.Nm putw
+.Nd output a character or word to a stream
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft int
+.Fn fputc "int c" "FILE *stream"
+.Ft int
+.Fn putc "int c" "FILE *stream"
+.Ft int
+.Fn putchar "int c"
+.Ft int
+.Fn putw "int w" "FILE *stream"
+.Sh DESCRIPTION
+The
+.Fn fputc
+function
+writes the character
+.Fa c
+(converted to an ``unsigned char'')
+to the output stream pointed to by
+.Fa stream .
+.Pp
+.Fn Putc
+acts essentially identically to
+.Fn fputc ,
+but is a macro that expands in-line. It may evaluate
+.Fa stream
+more than once, so arguments given to
+.Fn putc
+should not be expressions with potential side effects.
+.Pp
+.Fn Putchar
+is identical to
+.Fn putc
+with an output stream of
+.Em stdout .
+.Pp
+The
+.Fn putw
+function
+writes the specified
+.Em int
+to the named output
+.Fa stream .
+.Sh RETURN VALUES
+The functions,
+.Fn fputc ,
+.Fn putc
+and
+.Fn putchar
+return the character written.
+If an error occurs, the value
+.Dv EOF
+is returned.
+The
+.Fn putw
+function
+returns 0 on success;
+.Dv EOF
+is returned if
+a write error occurs,
+or if an attempt is made to write a read-only stream.
+.Sh SEE ALSO
+.Xr ferror 3 ,
+.Xr fopen 3 ,
+.Xr getc 3 ,
+.Xr stdio 3
+.Sh STANDARDS
+The functions
+.Fn fputc ,
+.Fn putc ,
+and
+.Fn putchar ,
+conform to
+.St -ansiC .
+A function
+.Fn putw
+function appeared in
+.At v6 .
+.Sh BUGS
+The size and byte order of an
+.Em int
+varies from one machine to another, and
+.Fn putw
+is not recommended for portable applications.
diff --git a/lib/libc/stdio/putc.c b/lib/libc/stdio/putc.c
new file mode 100644
index 0000000..c18353b
--- /dev/null
+++ b/lib/libc/stdio/putc.c
@@ -0,0 +1,53 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)putc.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+/*
+ * A subroutine version of the macro putc.
+ */
+#undef putc
+
+putc(c, fp)
+	int c;
+	register FILE *fp;
+{
+	return (__sputc(c, fp));
+}
diff --git a/lib/libc/stdio/putchar.c b/lib/libc/stdio/putchar.c
new file mode 100644
index 0000000..036b897
--- /dev/null
+++ b/lib/libc/stdio/putchar.c
@@ -0,0 +1,54 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)putchar.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+#undef putchar
+
+/*
+ * A subroutine version of the macro putchar
+ */
+putchar(c)
+	int c;
+{
+	register FILE *so = stdout;
+
+	return (__sputc(c, so));
+}
diff --git a/lib/libc/stdio/puts.c b/lib/libc/stdio/puts.c
new file mode 100644
index 0000000..96a8184
--- /dev/null
+++ b/lib/libc/stdio/puts.c
@@ -0,0 +1,63 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)puts.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <string.h>
+#include "fvwrite.h"
+
+/*
+ * Write the given string to stdout, appending a newline.
+ */
+puts(s)
+	char const *s;
+{
+	size_t c = strlen(s);
+	struct __suio uio;
+	struct __siov iov[2];
+
+	iov[0].iov_base = (void *)s;
+	iov[0].iov_len = c;
+	iov[1].iov_base = "\n";
+	iov[1].iov_len = 1;
+	uio.uio_resid = c + 1;
+	uio.uio_iov = &iov[0];
+	uio.uio_iovcnt = 2;
+	return (__sfvwrite(stdout, &uio) ? EOF : '\n');
+}
diff --git a/lib/libc/stdio/putw.c b/lib/libc/stdio/putw.c
new file mode 100644
index 0000000..4ba8982
--- /dev/null
+++ b/lib/libc/stdio/putw.c
@@ -0,0 +1,56 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)putw.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include "fvwrite.h"
+
+putw(w, fp)
+	int w;
+	FILE *fp;
+{
+	struct __suio uio;
+	struct __siov iov;
+
+	iov.iov_base = &w;
+	iov.iov_len = uio.uio_resid = sizeof(w);
+	uio.uio_iov = &iov;
+	uio.uio_iovcnt = 1;
+	return (__sfvwrite(fp, &uio));
+}
diff --git a/lib/libc/stdio/refill.c b/lib/libc/stdio/refill.c
new file mode 100644
index 0000000..35af0c0
--- /dev/null
+++ b/lib/libc/stdio/refill.c
@@ -0,0 +1,128 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)refill.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "local.h"
+
+static
+lflush(fp)
+	FILE *fp;
+{
+
+	if ((fp->_flags & (__SLBF|__SWR)) == __SLBF|__SWR)
+		return (__sflush(fp));
+	return (0);
+}
+
+/*
+ * Refill a stdio buffer.
+ * Return EOF on eof or error, 0 otherwise.
+ */
+__srefill(fp)
+	register FILE *fp;
+{
+
+	/* make sure stdio is set up */
+	if (!__sdidinit)
+		__sinit();
+
+	fp->_r = 0;		/* largely a convenience for callers */
+
+	/* SysV does not make this test; take it out for compatibility */
+	if (fp->_flags & __SEOF)
+		return (EOF);
+
+	/* if not already reading, have to be reading and writing */
+	if ((fp->_flags & __SRD) == 0) {
+		if ((fp->_flags & __SRW) == 0) {
+			errno = EBADF;
+			return (EOF);
+		}
+		/* switch to reading */
+		if (fp->_flags & __SWR) {
+			if (__sflush(fp))
+				return (EOF);
+			fp->_flags &= ~__SWR;
+			fp->_w = 0;
+			fp->_lbfsize = 0;
+		}
+		fp->_flags |= __SRD;
+	} else {
+		/*
+		 * We were reading.  If there is an ungetc buffer,
+		 * we must have been reading from that.  Drop it,
+		 * restoring the previous buffer (if any).  If there
+		 * is anything in that buffer, return.
+		 */
+		if (HASUB(fp)) {
+			FREEUB(fp);
+			if ((fp->_r = fp->_ur) != 0) {
+				fp->_p = fp->_up;
+				return (0);
+			}
+		}
+	}
+
+	if (fp->_bf._base == NULL)
+		__smakebuf(fp);
+
+	/*
+	 * Before reading from a line buffered or unbuffered file,
+	 * flush all line buffered output files, per the ANSI C
+	 * standard.
+	 */
+	if (fp->_flags & (__SLBF|__SNBF))
+		(void) _fwalk(lflush);
+	fp->_p = fp->_bf._base;
+	fp->_r = (*fp->_read)(fp->_cookie, (char *)fp->_p, fp->_bf._size);
+	fp->_flags &= ~__SMOD;	/* buffer contents are again pristine */
+	if (fp->_r <= 0) {
+		if (fp->_r == 0)
+			fp->_flags |= __SEOF;
+		else {
+			fp->_r = 0;
+			fp->_flags |= __SERR;
+		}
+		return (EOF);
+	}
+	return (0);
+}
diff --git a/lib/libc/stdio/remove.3 b/lib/libc/stdio/remove.3
new file mode 100644
index 0000000..7d6fc7d
--- /dev/null
+++ b/lib/libc/stdio/remove.3
@@ -0,0 +1,78 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)remove.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt REMOVE 3
+.Os
+.Sh NAME
+.Nm remove
+.Nd remove directory entry
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft int
+.Fn remove "const char *path"
+.Sh DESCRIPTION
+The
+.Fn remove
+function
+is an alias for the 
+.Xr unlink 2
+system call.
+It deletes the file referenced by
+.Fa path .
+.Sh RETURN VALUES
+Upon successful completion, 
+.Fn remove
+returns 0.
+Otherwise, \-1 is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+The
+.Fn remove
+function
+may fail and set
+.Va errno
+for any of the errors specified for the routine
+.Xr unlink 2 .
+.Sh SEE ALSO
+.Xr unlink 2
+.Sh STANDARDS
+The
+.Fn remove
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/stdio/remove.c b/lib/libc/stdio/remove.c
new file mode 100644
index 0000000..216535a
--- /dev/null
+++ b/lib/libc/stdio/remove.c
@@ -0,0 +1,48 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)remove.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <unistd.h>
+#include <stdio.h>
+
+remove(file)
+	const char *file;
+{
+	return (unlink(file));
+}
diff --git a/lib/libc/stdio/rewind.c b/lib/libc/stdio/rewind.c
new file mode 100644
index 0000000..4f8391b
--- /dev/null
+++ b/lib/libc/stdio/rewind.c
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rewind.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <errno.h>
+#include <stdio.h>
+
+void
+rewind(fp)
+	register FILE *fp;
+{
+	(void) fseek(fp, 0L, SEEK_SET);
+	clearerr(fp);
+	errno = 0;      /* not required, but seems reasonable */
+}
diff --git a/lib/libc/stdio/rget.c b/lib/libc/stdio/rget.c
new file mode 100644
index 0000000..3299fb5
--- /dev/null
+++ b/lib/libc/stdio/rget.c
@@ -0,0 +1,56 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rget.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+/*
+ * Handle getc() when the buffer ran out:
+ * Refill, then return the first character
+ * in the newly-filled buffer.
+ */
+__srget(fp)
+	register FILE *fp;
+{
+	if (__srefill(fp) == 0) {
+		fp->_r--;
+		return (*fp->_p++);
+	}
+	return (EOF);
+}
diff --git a/lib/libc/stdio/scanf.3 b/lib/libc/stdio/scanf.3
new file mode 100644
index 0000000..377a602
--- /dev/null
+++ b/lib/libc/stdio/scanf.3
@@ -0,0 +1,430 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)scanf.3	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt SCANF 3
+.Os
+.Sh NAME
+.Nm scanf ,
+.Nm fscanf ,
+.Nm sscanf ,
+.Nm vscanf ,
+.Nm vsscanf ,
+.Nm vfscanf
+.Nd input format conversion
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft int
+.Fn scanf "const char *format" ...
+.Ft int
+.Fn fscanf "FILE *stream" "const char *format" ...
+.Ft int
+.Fn sscanf "const char *str" "const char *format" ...
+.Fd #include <stdarg.h>
+.Ft int
+.Fn vscanf "const char *format" "va_list ap"
+.Ft int
+.Fn vsscanf "const char *str" "const char *format" "va_list ap"
+.Ft int
+.Fn vfscanf "FILE *stream" "const char *format" "va_list ap"
+.Sh DESCRIPTION
+The
+.Fn scanf
+family of functions scans input according to a
+.Fa format
+as described below.
+This format may contain
+.Em conversion specifiers ;
+the results from such conversions, if any,
+are stored through the
+.Em pointer
+arguments.
+The
+.Fn scanf
+function
+reads input from the standard input stream
+.Em stdin ,
+.Fn fscanf
+reads input from the stream pointer
+.Fa stream ,
+and
+.Fn sscanf
+reads its input from the character string pointed to by
+.Fa str .
+The
+.Fn vfscanf
+function
+is analogous to
+.Xr vfprintf 3
+and reads input from the stream pointer
+.Fa stream
+using a variable argument list of pointers (see
+.Xr stdarg 3 ) .
+The
+.Fn vscanf
+function scans a variable argument list from the standard input and
+the
+.Fn vsscanf
+function scans it from a string;
+these are analogous to
+the
+.Fn vprintf
+and
+.Fn vsprintf
+functions respectively.
+Each successive
+.Em pointer
+argument must correspond properly with
+each successive conversion specifier
+(but see `suppression' below).
+All conversions are introduced by the
+.Cm %
+(percent sign) character.
+The
+.Fa format
+string
+may also contain other characters.
+White space (such as blanks, tabs, or newlines) in the
+.Fa format
+string match any amount of white space, including none, in the input.
+Everything else
+matches only itself.
+Scanning stops
+when an input character does not match such a format character.
+Scanning also stops
+when an input conversion cannot be made (see below).
+.Sh CONVERSIONS
+Following the
+.Cm %
+character introducing a conversion
+there may be a number of
+.Em flag
+characters, as follows:
+.Bl -tag -width indent
+.It Cm *
+Suppresses assignment.
+The conversion that follows occurs as usual, but no pointer is used;
+the result of the conversion is simply discarded.
+.It Cm h
+Indicates that the conversion will be one of
+.Cm dioux
+or
+.Cm n
+and the next pointer is a pointer to a
+.Em short  int
+(rather than
+.Em int ) .
+.It Cm l
+Indicates either that the conversion will be one of
+.Cm dioux
+or
+.Cm n
+and the next pointer is a pointer to a
+.Em long  int
+(rather than
+.Em int ) ,
+or that the conversion will be one of
+.Cm efg
+and the next pointer is a pointer to
+.Em double
+(rather than
+.Em float ) .
+.It Cm L
+Indicates that the conversion will be
+.Cm efg
+and the next pointer is a pointer to
+.Em long double .
+(This type is not implemented; the
+.Cm L
+flag is currently ignored.)
+.El
+.Pp
+In addition to these flags,
+there may be an optional maximum field width,
+expressed as a decimal integer,
+between the
+.Cm %
+and the conversion.
+If no width is given,
+a default of `infinity' is used (with one exception, below);
+otherwise at most this many characters are scanned
+in processing the conversion.
+Before conversion begins,
+most conversions skip white space;
+this white space is not counted against the field width.
+.Pp
+The following conversions are available:
+.Bl -tag -width XXXX
+.It Cm %
+Matches a literal `%'.
+That is, `%\&%' in the format string
+matches a single input `%' character.
+No conversion is done, and assignment does not occur.
+.It Cm d
+Matches an optionally signed decimal integer;
+the next pointer must be a pointer to
+.Em int .
+.It Cm D
+Equivalent to
+.Xr ld ;
+this exists only for backwards compatibility.
+.It Cm i
+Matches an optionally signed integer;
+the next pointer must be a pointer to
+.Em int .
+The integer is read in base 16 if it begins
+with
+.Ql 0x
+or
+.Ql 0X ,
+in base 8 if it begins with
+.Ql 0 ,
+and in base 10 otherwise.
+Only characters that correspond to the base are used.
+.It Cm o
+Matches an octal integer;
+the next pointer must be a pointer to
+.Em unsigned int .
+.It Cm O
+Equivalent to
+.Xr lo ;
+this exists for backwards compatibility.
+.It Cm u
+Matches an optionally signed decimal integer;
+the next pointer must be a pointer to
+.Em unsigned int .
+.It Cm x
+Matches an optionally signed hexadecimal integer;
+the next pointer must be a pointer to
+.Em unsigned int .
+.It Cm X
+Equivalent to
+.Cm lx ;
+this violates the
+.St -ansiC ,
+but is backwards compatible with previous
+.Ux
+systems.
+.It Cm f
+Matches an optionally signed floating-point number;
+the next pointer must be a pointer to
+.Em float .
+.It Cm e
+Equivalent to
+.Cm f .
+.It Cm g
+Equivalent to
+.Cm f .
+.It Cm E
+Equivalent to
+.Cm lf ;
+this violates the
+.St -ansiC ,
+but is backwards compatible with previous
+.Ux
+systems.
+.It Cm F
+Equivalent to
+.Cm lf ;
+this exists only for backwards compatibility.
+.It Cm s
+Matches a sequence of non-white-space characters;
+the next pointer must be a pointer to
+.Em char ,
+and the array must be large enough to accept all the sequence and the
+terminating
+.Dv NUL
+character.
+The input string stops at white space
+or at the maximum field width, whichever occurs first.
+.It Cm c
+Matches a sequence of
+.Em width
+count
+characters (default 1);
+the next pointer must be a pointer to
+.Em char ,
+and there must be enough room for all the characters
+(no terminating
+.Dv NUL
+is added).
+The usual skip of leading white space is suppressed.
+To skip white space first, use an explicit space in the format.
+.It Cm \&[
+Matches a nonempty sequence of characters from the specified set
+of accepted characters;
+the next pointer must be a pointer to
+.Em char ,
+and there must be enough room for all the characters in the string,
+plus a terminating
+.Dv NUL
+character.
+The usual skip of leading white space is suppressed.
+The string is to be made up of characters in
+(or not in)
+a particular set;
+the set is defined by the characters between the open bracket
+.Cm [
+character
+and a close bracket
+.Cm ]
+character.
+The set
+.Em excludes
+those characters
+if the first character after the open bracket is a circumflex
+.Cm ^ .
+To include a close bracket in the set,
+make it the first character after the open bracket
+or the circumflex;
+any other position will end the set.
+The hyphen character
+.Cm -
+is also special;
+when placed between two other characters,
+it adds all intervening characters to the set.
+To include a hyphen,
+make it the last character before the final close bracket.
+For instance,
+.Ql [^]0-9-]
+means the set `everything except close bracket, zero through nine,
+and hyphen'.
+The string ends with the appearance of a character not in the
+(or, with a circumflex, in) set
+or when the field width runs out.
+.It Cm p
+Matches a pointer value (as printed by
+.Ql %p
+in
+.Xr printf 3 ) ;
+the next pointer must be a pointer to
+.Em void .
+.It Cm n
+Nothing is expected;
+instead, the number of characters consumed thus far from the input
+is stored through the next pointer,
+which must be a pointer to
+.Em int .
+This is
+.Em not
+a conversion, although it can be suppressed with the
+.Cm *
+flag.
+.El
+.Pp
+For backwards compatibility,
+other conversion characters (except
+.Ql \e0 )
+are taken as if they were
+.Ql %d
+or, if uppercase,
+.Ql %ld ,
+and a `conversion' of
+.Ql %\e0
+causes an immediate return of
+.Dv EOF .
+The
+.Cm F
+and
+.Cm X
+conversions will be changed in the future
+to conform to the
+.Tn ANSI
+C standard,
+after which they will act like
+.Cm f
+and
+.Cm x
+respectively.
+.Pp
+.Sh RETURN VALUES
+These
+functions
+return
+the number of input items assigned, which can be fewer than provided
+for, or even zero, in the event of a matching failure.
+Zero
+indicates that, while there was input available,
+no conversions were assigned;
+typically this is due to an invalid input character,
+such as an alphabetic character for a
+.Ql %d
+conversion.
+The value
+.Dv EOF
+is returned if an input failure occurs before any conversion such as an
+end-of-file occurs. If an error or end-of-file occurs after conversion
+has begun,
+the number of conversions which were successfully completed is returned.
+.Sh SEE ALSO
+.Xr strtol 3 ,
+.Xr strtoul 3 ,
+.Xr strtod 3 ,
+.Xr getc 3 ,
+.Xr printf 3
+.Sh STANDARDS
+The functions
+.Fn fscanf ,
+.Fn scanf ,
+and
+.Fn sscanf
+conform to
+.St -ansiC .
+.Sh HISTORY
+The functions
+.Fn vscanf ,
+.Fn vsscanf
+and
+.Fn vfscanf
+are new to this release.
+.Sh BUGS
+The current situation with
+.Cm %F
+and
+.Cm %X
+conversions is unfortunate.
+.Pp
+All of the backwards compatibility formats will be removed in the future.
+.Pp
+Numerical strings are truncated to 512 characters; for example,
+.Cm %f
+and
+.Cm %d
+are implicitly
+.Cm %512f
+and
+.Cm %512d .
diff --git a/lib/libc/stdio/scanf.c b/lib/libc/stdio/scanf.c
new file mode 100644
index 0000000..d36b13a
--- /dev/null
+++ b/lib/libc/stdio/scanf.c
@@ -0,0 +1,67 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)scanf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+#if __STDC__
+scanf(char const *fmt, ...)
+#else
+scanf(fmt, va_alist)
+	char *fmt;
+	va_dcl
+#endif
+{
+	int ret;
+	va_list ap;
+
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	ret = __svfscanf(stdin, fmt, ap);
+	va_end(ap);
+	return (ret);
+}
diff --git a/lib/libc/stdio/setbuf.3 b/lib/libc/stdio/setbuf.3
new file mode 100644
index 0000000..30e9db7
--- /dev/null
+++ b/lib/libc/stdio/setbuf.3
@@ -0,0 +1,202 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)setbuf.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SETBUF 3
+.Os BSD 4
+.Sh NAME
+.Nm setbuf ,
+.Nm setbuffer ,
+.Nm setlinebuf ,
+.Nm setvbuf
+.Nd stream buffering operations
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft void
+.Fn setbuf "FILE *stream" "char *buf"
+.Ft void
+.Fn setbuffer "FILE *stream" "char *buf" "size_t size"
+.Ft int
+.Fn setlinebuf "FILE *stream"
+.Ft int
+.Fn setvbuf "FILE *stream" "char *buf" "int mode" "size_t size"
+.Sh DESCRIPTION
+The three types of buffering available are unbuffered, block buffered,
+and line buffered.
+When an output stream is unbuffered, information appears on the
+destination file or terminal as soon as written;
+when it is block buffered many characters are saved up and written as a block;
+when it is line buffered characters are saved up until a newline is
+output or input is read from any stream attached to a terminal device
+(typically stdin).
+The function
+.Xr fflush 3
+may be used to force the block out early.
+(See 
+.Xr fclose 3 . )
+.Pp
+Normally all files are block buffered.
+When the first
+.Tn I/O
+operation occurs on a file,
+.Xr malloc 3
+is called,
+and an optimally-sized buffer is obtained.
+If a stream refers to a terminal
+(as
+.Em stdout
+normally does) it is line buffered.
+The standard error stream
+.Em stderr
+is always unbuffered.
+.Pp
+The
+.Fn setvbuf
+function
+may be used to alter the buffering behavior of a stream.
+The
+.Fa mode
+parameter must be one of the following three macros:
+.Bl -tag -width _IOFBF -offset indent
+.It Dv _IONBF
+unbuffered
+.It Dv _IOLBF
+line buffered
+.It Dv _IOFBF
+fully buffered
+.El
+.Pp
+The
+.Fa size
+parameter may be given as zero
+to obtain deferred optimal-size buffer allocation as usual.
+If it is not zero,
+then except for unbuffered files, the 
+.Fa buf
+argument should point to a buffer at least
+.Fa size
+bytes long;
+this buffer will be used instead of the current buffer.
+(If the
+.Fa size
+argument
+is not zero but
+.Fa buf
+is
+.Dv NULL ,
+a buffer of the given size will be allocated immediately,
+and released on close.
+This is an extension to ANSI C;
+portable code should use a size of 0 with any
+.Dv NULL
+buffer.)
+.Pp
+The
+.Fn setvbuf
+function may be used at any time,
+but may have peculiar side effects
+(such as discarding input or flushing output)
+if the stream is ``active''.
+Portable applications should call it only once on any given stream,
+and before any 
+.Tn I/O
+is performed.
+.Pp
+The other three calls are, in effect, simply aliases for calls to
+.Fn setvbuf .
+Except for the lack of a return value, the
+.Fn setbuf
+function is exactly equivalent to the call
+.Pp
+.Dl "setvbuf(stream, buf, buf ? _IOFBF : _IONBF, BUFSIZ);"
+.Pp
+The
+.Fn setbuffer
+function
+is the same, except that the size of the buffer is up to the caller,
+rather than being determined by the default
+.Dv BUFSIZ .
+The
+.Fn setlinebuf
+function
+is exactly equivalent to the call:
+.Pp
+.Dl "setvbuf(stream, (char *)NULL, _IOLBF, 0);"
+.Sh RETURN VALUES
+The
+.Fn setvbuf
+function returns 0 on success, or
+.Dv EOF
+if the request cannot be honored
+(note that the stream is still functional in this case).
+.Pp
+The
+.Fn setlinebuf
+function returns what the equivalent
+.Fn setvbuf
+would have returned.
+.Sh SEE ALSO
+.Xr fopen 3 ,
+.Xr fclose 3 ,
+.Xr fread 3 ,
+.Xr malloc 3 ,
+.Xr puts 3 ,
+.Xr printf 3
+.Sh STANDARDS
+The
+.Fn setbuf
+and
+.Fn setvbuf
+functions
+conform to
+.St -ansiC .
+.Sh BUGS
+The
+.Fn setbuffer
+and
+.Fn setlinebuf
+functions are not portable to versions of
+.Bx
+before
+.Bx 4.2 .
+On
+.Bx 4.2
+and
+.Bx 4.3
+systems,
+.Fn setbuf
+always uses a suboptimal buffer size and should be avoided.
diff --git a/lib/libc/stdio/setbuf.c b/lib/libc/stdio/setbuf.c
new file mode 100644
index 0000000..b07bce9
--- /dev/null
+++ b/lib/libc/stdio/setbuf.c
@@ -0,0 +1,50 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)setbuf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include "local.h"
+
+void
+setbuf(fp, buf)
+	FILE *fp;
+	char *buf;
+{
+	(void) setvbuf(fp, buf, buf ? _IOFBF : _IONBF, BUFSIZ);
+}
diff --git a/lib/libc/stdio/setbuffer.c b/lib/libc/stdio/setbuffer.c
new file mode 100644
index 0000000..a6d06dd
--- /dev/null
+++ b/lib/libc/stdio/setbuffer.c
@@ -0,0 +1,62 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)setbuffer.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+void
+setbuffer(fp, buf, size)
+	register FILE *fp;
+	char *buf;
+	int size;
+{
+
+	(void)setvbuf(fp, buf, buf ? _IOFBF : _IONBF, size);
+}
+
+/*
+ * set line buffering
+ */
+int
+setlinebuf(fp)
+	FILE *fp;
+{
+
+	return (setvbuf(fp, (char *)NULL, _IOLBF, (size_t)0));
+}
diff --git a/lib/libc/stdio/setvbuf.c b/lib/libc/stdio/setvbuf.c
new file mode 100644
index 0000000..867f9b4
--- /dev/null
+++ b/lib/libc/stdio/setvbuf.c
@@ -0,0 +1,160 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)setvbuf.c	8.2 (Berkeley) 11/16/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "local.h"
+
+/*
+ * Set one of the three kinds of buffering, optionally including
+ * a buffer.
+ */
+setvbuf(fp, buf, mode, size)
+	register FILE *fp;
+	char *buf;
+	register int mode;
+	register size_t size;
+{
+	register int ret, flags;
+	size_t iosize;
+	int ttyflag;
+
+	/*
+	 * Verify arguments.  The `int' limit on `size' is due to this
+	 * particular implementation.  Note, buf and size are ignored
+	 * when setting _IONBF.
+	 */
+	if (mode != _IONBF)
+		if ((mode != _IOFBF && mode != _IOLBF) || (int)size < 0)
+			return (EOF);
+
+	/*
+	 * Write current buffer, if any.  Discard unread input (including
+	 * ungetc data), cancel line buffering, and free old buffer if
+	 * malloc()ed.  We also clear any eof condition, as if this were
+	 * a seek.
+	 */
+	ret = 0;
+	(void)__sflush(fp);
+	if (HASUB(fp))
+		FREEUB(fp);
+	fp->_r = fp->_lbfsize = 0;
+	flags = fp->_flags;
+	if (flags & __SMBF)
+		free((void *)fp->_bf._base);
+	flags &= ~(__SLBF | __SNBF | __SMBF | __SOPT | __SNPT | __SEOF);
+
+	/* If setting unbuffered mode, skip all the hard work. */
+	if (mode == _IONBF)
+		goto nbf;
+
+	/*
+	 * Find optimal I/O size for seek optimization.  This also returns
+	 * a `tty flag' to suggest that we check isatty(fd), but we do not
+	 * care since our caller told us how to buffer.
+	 */
+	flags |= __swhatbuf(fp, &iosize, &ttyflag);
+	if (size == 0) {
+		buf = NULL;	/* force local allocation */
+		size = iosize;
+	}
+
+	/* Allocate buffer if needed. */
+	if (buf == NULL) {
+		if ((buf = malloc(size)) == NULL) {
+			/*
+			 * Unable to honor user's request.  We will return
+			 * failure, but try again with file system size.
+			 */
+			ret = EOF;
+			if (size != iosize) {
+				size = iosize;
+				buf = malloc(size);
+			}
+		}
+		if (buf == NULL) {
+			/* No luck; switch to unbuffered I/O. */
+nbf:
+			fp->_flags = flags | __SNBF;
+			fp->_w = 0;
+			fp->_bf._base = fp->_p = fp->_nbuf;
+			fp->_bf._size = 1;
+			return (ret);
+		}
+		flags |= __SMBF;
+	}
+
+	/*
+	 * Kill any seek optimization if the buffer is not the
+	 * right size.
+	 *
+	 * SHOULD WE ALLOW MULTIPLES HERE (i.e., ok iff (size % iosize) == 0)?
+	 */
+	if (size != iosize)
+		flags |= __SNPT;
+
+	/*
+	 * Fix up the FILE fields, and set __cleanup for output flush on
+	 * exit (since we are buffered in some way).
+	 */
+	if (mode == _IOLBF)
+		flags |= __SLBF;
+	fp->_flags = flags;
+	fp->_bf._base = fp->_p = (unsigned char *)buf;
+	fp->_bf._size = size;
+	/* fp->_lbfsize is still 0 */
+	if (flags & __SWR) {
+		/*
+		 * Begin or continue writing: see __swsetup().  Note
+		 * that __SNBF is impossible (it was handled earlier).
+		 */
+		if (flags & __SLBF) {
+			fp->_w = 0;
+			fp->_lbfsize = -fp->_bf._size;
+		} else
+			fp->_w = size;
+	} else {
+		/* begin/continue reading, or stay in intermediate state */
+		fp->_w = 0;
+	}
+	__cleanup = _cleanup;
+
+	return (ret);
+}
diff --git a/lib/libc/stdio/snprintf.c b/lib/libc/stdio/snprintf.c
new file mode 100644
index 0000000..3c3cf7d
--- /dev/null
+++ b/lib/libc/stdio/snprintf.c
@@ -0,0 +1,76 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)snprintf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+#if __STDC__
+snprintf(char *str, size_t n, char const *fmt, ...)
+#else
+snprintf(str, n, fmt, va_alist)
+	char *str;
+	size_t n;
+	char *fmt;
+	va_dcl
+#endif
+{
+	int ret;
+	va_list ap;
+	FILE f;
+
+	if ((int)n < 1)
+		return (EOF);
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	f._flags = __SWR | __SSTR;
+	f._bf._base = f._p = (unsigned char *)str;
+	f._bf._size = f._w = n - 1;
+	ret = vfprintf(&f, fmt, ap);
+	*f._p = 0;
+	va_end(ap);
+	return (ret);
+}
diff --git a/lib/libc/stdio/sprintf.c b/lib/libc/stdio/sprintf.c
new file mode 100644
index 0000000..254064f
--- /dev/null
+++ b/lib/libc/stdio/sprintf.c
@@ -0,0 +1,75 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)sprintf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+#include <limits.h>
+#include "local.h"
+
+#if __STDC__
+sprintf(char *str, char const *fmt, ...)
+#else
+sprintf(str, fmt, va_alist)
+	char *str;
+	char *fmt;
+	va_dcl
+#endif
+{
+	int ret;
+	va_list ap;
+	FILE f;
+
+	f._flags = __SWR | __SSTR;
+	f._bf._base = f._p = (unsigned char *)str;
+	f._bf._size = f._w = INT_MAX;
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	ret = vfprintf(&f, fmt, ap);
+	va_end(ap);
+	*f._p = 0;
+	return (ret);
+}
diff --git a/lib/libc/stdio/sscanf.c b/lib/libc/stdio/sscanf.c
new file mode 100644
index 0000000..bb72744
--- /dev/null
+++ b/lib/libc/stdio/sscanf.c
@@ -0,0 +1,88 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)sscanf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <string.h>
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+#include "local.h"
+
+/* ARGSUSED */
+static int
+eofread(cookie, buf, len)
+	void *cookie;
+	char *buf;
+	int len;
+{
+
+	return (0);
+}
+
+#if __STDC__
+sscanf(const char *str, char const *fmt, ...)
+#else
+sscanf(str, fmt, va_alist)
+	char *str;
+	char *fmt;
+	va_dcl
+#endif
+{
+	int ret;
+	va_list ap;
+	FILE f;
+
+	f._flags = __SRD;
+	f._bf._base = f._p = (unsigned char *)str;
+	f._bf._size = f._r = strlen(str);
+	f._read = eofread;
+	f._ub._base = NULL;
+	f._lb._base = NULL;
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	ret = __svfscanf(&f, fmt, ap);
+	va_end(ap);
+	return (ret);
+}
diff --git a/lib/libc/stdio/stdio.3 b/lib/libc/stdio/stdio.3
new file mode 100644
index 0000000..572df8c
--- /dev/null
+++ b/lib/libc/stdio/stdio.3
@@ -0,0 +1,287 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)stdio.3	8.7 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt STDIO 3
+.Os BSD 4
+.Sh NAME
+.Nm stdio
+.Nd standard input/output library functions
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Fd FILE *stdin;
+.Fd FILE *stdout;
+.Fd FILE *stderr;
+.Sh DESCRIPTION
+The standard
+.Tn I/O
+library provides a simple and efficient buffered stream
+.Tn I/O
+interface.
+Input and ouput is mapped into logical data streams
+and the physical
+.Tn I/O
+characteristics are concealed. The functions and macros are listed
+below; more information is available from the individual man pages.
+.Pp
+A stream is associated with an external file (which may be a physical
+device) by
+.Em opening
+a file, which may involve creating a new file. Creating an
+existing file causes its former contents to be discarded.
+If a file can support positioning requests (such as a disk file, as opposed
+to a terminal) then a
+.Em file position indicator
+associated with the stream is positioned at the start of the file (byte
+zero), unless the file is opened with appended mode. If append mode
+is used, the position indicator will be placed the end-of-file.
+The position indicator is maintained by subsequent reads, writes
+and positioning requests. All input occurs as if the characters
+were read by successive calls to the
+.Xr fgetc 3
+function; all ouput takes place as if all characters were
+read by successive calls to the
+.Xr fputc 3
+function.
+.Pp
+A file is disassociated from a stream by
+.Em closing
+the file.
+Ouput streams are flushed (any unwritten buffer contents are transferred
+to the host environment) before the stream is disassociated from the file.
+The value of a pointer to a
+.Dv FILE
+object is indeterminate after a file is closed (garbage).
+.Pp
+A file may be subsequently reopened, by the same or another program
+execution, and its contents reclaimed or modified (if it can be repositioned
+at the start).  If the main function returns to its original caller, or
+the
+.Xr exit 3
+function is called, all open files are closed (hence all output
+streams are flushed) before program termination.  Other methods
+of program termination, such as
+.Xr abort 3
+do not bother about closing files properly.
+.Pp
+This implementation needs and makes
+no distinction between
+.Dq text
+and
+.Dq binary
+streams.
+In effect, all streams are binary.
+No translation is performed and no extra padding appears on any stream.
+.Pp
+At program startup, three streams are predefined and need not be
+opened explicitly:
+.Bl -bullet -compact -offset indent
+.It
+.Em standard input 
+(for reading conventional input),
+.It
+.Em standard output 
+(for writing conventional input), and
+.It
+.Em standard error
+(for writing diagnostic output).
+.El
+These streams are abbreviated
+.Em stdin , stdout
+and
+.Em stderr .
+Initially, the standard error stream
+is unbuffered; the standard input and output streams are
+fully buffered if and only if the streams do not refer to
+an interactive or
+.Dq terminal
+device, as determined by the
+.Xr isatty 3
+function.
+In fact,
+.Em all
+freshly-opened streams that refer to terminal devices
+default to line buffering, and
+pending output to such streams is written automatically
+whenever an such an input stream is read.
+Note that this applies only to
+.Dq "true reads" ;
+if the read request can be satisfied by existing buffered data,
+no automatic flush will occur.
+In these cases,
+or when a large amount of computation is done after printing
+part of a line on an output terminal, it is necessary to
+.Xr fflush 3
+the standard output before going off and computing so that the output
+will appear.
+Alternatively, these defaults may be modified via the
+.Xr setvbuf 3
+function.
+.Pp
+The
+.Nm stdio
+library is a part of the library
+.Xr libc
+and routines are automatically loaded as needed by the compilers
+.Xr cc 1
+and
+.Xr pc 1 .
+The
+.Tn SYNOPSIS
+sections of the following manual pages indicate which include files
+are to be used, what the compiler declaration for the function
+looks like and which external variables are of interest.
+.Pp
+The following are defined as macros;
+these names may not be re-used
+without first removing their current definitions with
+.Dv #undef :
+.Dv BUFSIZ ,
+.Dv EOF ,
+.Dv FILENAME_MAX ,
+.DV FOPEN_MAX ,
+.Dv L_cuserid ,
+.Dv L_ctermid ,
+.Dv L_tmpnam,
+.Dv NULL ,
+.Dv SEEK_END ,
+.Dv SEEK_SET ,
+.Dv SEE_CUR ,
+.Dv TMP_MAX ,
+.Dv clearerr ,
+.Dv feof ,
+.Dv ferror ,
+.Dv fileno ,
+.Dv freopen ,
+.Dv fwopen ,
+.Dv getc ,
+.Dv getchar ,
+.Dv putc ,
+.Dv putchar ,
+.Dv stderr ,
+.Dv stdin ,
+.Dv stdout .
+Function versions of the macro functions
+.Xr feof ,
+.Xr ferror ,
+.Xr clearerr ,
+.Xr fileno ,
+.Xr getc ,
+.Xr getchar ,
+.Xr putc ,
+and
+.Xr putchar
+exist and will be used if the macros
+definitions are explicitly removed.
+.Sh SEE ALSO
+.Xr open 2 ,
+.Xr close 2 ,
+.Xr read 2 ,
+.Xr write 2
+.Sh BUGS
+The standard buffered functions do not interact well with certain other
+library and system functions, especially
+.Xr vfork
+and
+.Xr abort .
+.Sh STANDARDS
+The
+.Nm stdio
+library conforms to
+.St -ansiC .
+.Sh LIST OF FUNCTIONS
+.Bl -column "Description"
+.Sy Function	Description
+clearerr	check and reset stream status
+fclose	close a stream
+fdopen	stream open functions
+feof	check and reset stream status
+ferror	check and reset stream status
+fflush	flush a stream
+fgetc	get next character or word from input stream
+fgetline	get a line from a stream
+fgetpos	reposition a stream
+fgets	get a line from a stream
+fileno	check and reset stream status
+fopen	stream open functions
+fprintf	formatted output conversion
+fpurge	flush a stream
+fputc	output a character or word to a stream
+fputs	output a line to a stream
+fread	binary stream input/output
+freopen	stream open functions
+fropen	open a stream
+fscanf	input format conversion
+fseek	reposition a stream
+fsetpos	reposition a stream
+ftell	reposition a stream
+funopen	open a stream
+fwopen	open a stream
+fwrite	binary stream input/output
+getc	get next character or word from input stream
+getchar	get next character or word from input stream
+gets	get a line from a stream
+getw	get next character or word from input stream
+mkstemp	create unique temporary file
+mktemp	create unique temporary file
+perror	system error messages
+printf	formatted output conversion
+putc	output a character or word to a stream
+putchar	output a character or word to a stream
+puts	output a line to a stream
+putw	output a character or word to a stream
+remove	remove directory entry
+rewind	reposition a stream
+scanf	input format conversion
+setbuf	stream buffering operations
+setbuffer	stream buffering operations
+setlinebuf	stream buffering operations
+setvbuf	stream buffering operations
+snprintf	formatted output conversion
+sprintf	formatted output conversion
+sscanf	input format conversion
+strerror	system error messages
+sys_errlist	system error messages
+sys_nerr	system error messages
+tempnam	temporary file routines
+tmpfile	temporary file routines
+tmpnam	temporary file routines
+ungetc	un-get character from input stream
+vfprintf	formatted output conversion
+vfscanf	input format conversion
+vprintf	formatted output conversion
+vscanf	input format conversion
+vsnprintf	formatted output conversion
+vsprintf	formatted output conversion
+vsscanf	input format conversion
+.El
diff --git a/lib/libc/stdio/stdio.c b/lib/libc/stdio/stdio.c
new file mode 100644
index 0000000..c2d7d87
--- /dev/null
+++ b/lib/libc/stdio/stdio.c
@@ -0,0 +1,104 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)stdio.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+#include "local.h"
+
+/*
+ * Small standard I/O/seek/close functions.
+ * These maintain the `known seek offset' for seek optimisation.
+ */
+__sread(cookie, buf, n)
+	void *cookie;
+	char *buf;
+	int n;
+{
+	register FILE *fp = cookie;
+	register int ret;
+
+	ret = read(fp->_file, buf, n);
+	/* if the read succeeded, update the current offset */
+	if (ret >= 0)
+		fp->_offset += ret;
+	else
+		fp->_flags &= ~__SOFF;	/* paranoia */
+	return (ret);
+}
+
+__swrite(cookie, buf, n)
+	void *cookie;
+	char const *buf;
+	int n;
+{
+	register FILE *fp = cookie;
+
+	if (fp->_flags & __SAPP)
+		(void) lseek(fp->_file, (off_t)0, SEEK_END);
+	fp->_flags &= ~__SOFF;	/* in case FAPPEND mode is set */
+	return (write(fp->_file, buf, n));
+}
+
+fpos_t
+__sseek(cookie, offset, whence)
+	void *cookie;
+	fpos_t offset;
+	int whence;
+{
+	register FILE *fp = cookie;
+	register off_t ret;
+
+	ret = lseek(fp->_file, (off_t)offset, whence);
+	if (ret == -1L)
+		fp->_flags &= ~__SOFF;
+	else {
+		fp->_flags |= __SOFF;
+		fp->_offset = ret;
+	}
+	return (ret);
+}
+
+__sclose(cookie)
+	void *cookie;
+{
+
+	return (close(((FILE *)cookie)->_file));
+}
diff --git a/lib/libc/stdio/tempnam.c b/lib/libc/stdio/tempnam.c
new file mode 100644
index 0000000..6644ae5
--- /dev/null
+++ b/lib/libc/stdio/tempnam.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)tempnam.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <paths.h>
+
+char *
+tempnam(dir, pfx)
+	const char *dir, *pfx;
+{
+	int sverrno;
+	char *f, *name;
+
+	if (!(name = malloc(MAXPATHLEN)))
+		return(NULL);
+
+	if (!pfx)
+		pfx = "tmp.";
+
+	if (f = getenv("TMPDIR")) {
+		(void)snprintf(name, MAXPATHLEN, "%s%s%sXXXXXX", f,
+		    *(f + strlen(f) - 1) == '/'? "": "/", pfx);
+		if (f = mktemp(name))
+			return(f);
+	}
+
+	if (f = (char *)dir) {
+		(void)snprintf(name, MAXPATHLEN, "%s%s%sXXXXXX", f,
+		    *(f + strlen(f) - 1) == '/'? "": "/", pfx);
+		if (f = mktemp(name))
+			return(f);
+	}
+
+	f = P_tmpdir;
+	(void)snprintf(name, MAXPATHLEN, "%s%sXXXXXX", f, pfx);
+	if (f = mktemp(name))
+		return(f);
+
+	f = _PATH_TMP;
+	(void)snprintf(name, MAXPATHLEN, "%s%sXXXXXX", f, pfx);
+	if (f = mktemp(name))
+		return(f);
+
+	sverrno = errno;
+	free(name);
+	errno = sverrno;
+	return(NULL);
+}
diff --git a/lib/libc/stdio/tmpfile.c b/lib/libc/stdio/tmpfile.c
new file mode 100644
index 0000000..2f8abfc
--- /dev/null
+++ b/lib/libc/stdio/tmpfile.c
@@ -0,0 +1,79 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)tmpfile.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <signal.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdio.h>
+#include <paths.h>
+
+FILE *
+tmpfile()
+{
+	sigset_t set, oset;
+	FILE *fp;
+	int fd, sverrno;
+#define	TRAILER	"tmp.XXXXXX"
+	char buf[sizeof(_PATH_TMP) + sizeof(TRAILER)];
+
+	(void)memcpy(buf, _PATH_TMP, sizeof(_PATH_TMP) - 1);
+	(void)memcpy(buf + sizeof(_PATH_TMP) - 1, TRAILER, sizeof(TRAILER));
+
+	sigfillset(&set);
+	(void)sigprocmask(SIG_BLOCK, &set, &oset);
+
+	fd = mkstemp(buf);
+	if (fd != -1)
+		(void)unlink(buf);
+
+	(void)sigprocmask(SIG_SETMASK, &oset, NULL);
+
+	if (fd == -1)
+		return (NULL);
+
+	if ((fp = fdopen(fd, "w+")) == NULL) {
+		sverrno = errno;
+		(void)close(fd);
+		errno = sverrno;
+		return (NULL);
+	}
+	return (fp);
+}
diff --git a/lib/libc/stdio/tmpnam.3 b/lib/libc/stdio/tmpnam.3
new file mode 100644
index 0000000..3b053ee
--- /dev/null
+++ b/lib/libc/stdio/tmpnam.3
@@ -0,0 +1,219 @@
+.\" Copyright (c) 1988, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)tmpnam.3	8.2 (Berkeley) 11/17/93
+.\"
+.Dd November 17, 1993
+.Dt TMPFILE 3
+.Os
+.Sh NAME
+.Nm tempnam ,
+.Nm tmpfile ,
+.Nm tmpnam
+.Nd temporary file routines
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft FILE *
+.Fn tmpfile void
+.Ft char *
+.Fn tmpnam "char *str"
+.Ft char *
+.Fn tempnam "const char *tmpdir" "const char *prefix"
+.Sh DESCRIPTION
+The
+.Fn tmpfile
+function
+returns a pointer to a stream associated with a file descriptor returned
+by the routine
+.Xr mkstemp 3 .
+The created file is unlinked before
+.Fn tmpfile
+returns, causing the file to be automatically deleted when the last
+reference to it is closed.
+The file is opened with the access value
+.Ql w+ .
+.Pp
+The
+.Fn tmpnam
+function
+returns a pointer to a file name, in the
+.Dv P_tmpdir
+directory, which
+did not reference an existing file at some indeterminate point in the
+past.
+.Dv P_tmpdir
+is defined in the include file
+.Aq Pa stdio.h .
+If the argument
+.Fa s
+is
+.Pf non- Dv NULL ,
+the file name is copied to the buffer it references.
+Otherwise, the file name is copied to a static buffer.
+In either case,
+.Fn tmpnam
+returns a pointer to the file name.
+.Pp
+The buffer referenced by 
+.Fa s
+is expected to be at least
+.Dv L_tmpnam
+bytes in length.
+.Dv L_tmpnam
+is defined in the include file
+.Aq Pa stdio.h .
+.Pp
+The
+.Fn tempnam
+function
+is similar to
+.Fn tmpnam ,
+but provides the ability to specify the directory which will
+contain the temporary file and the file name prefix.
+.Pp
+The environment variable
+.Ev TMPDIR
+(if set), the argument
+.Fa tmpdir
+(if
+.Pf non- Dv NULL ) ,
+the directory
+.Dv P_tmpdir ,
+and the directory
+.Pa /tmp
+are tried, in the listed order, as directories in which to store the
+temporary file.
+.Pp
+The argument
+.Fa prefix ,
+if
+.Pf non- Dv NULL ,
+is used to specify a file name prefix, which will be the
+first part of the created file name.
+.Fn Tempnam
+allocates memory in which to store the file name; the returned pointer
+may be used as a subsequent argument to
+.Xr free 3 .
+.Sh RETURN VALUES
+The
+.Fn tmpfile
+function
+returns a pointer to an open file stream on success, and a
+.Dv NULL
+pointer
+on error.
+.Pp
+The
+.Fn tmpnam
+and
+.Fn tempfile
+functions
+return a pointer to a file name on success, and a
+.Dv NULL
+pointer
+on error.
+.Sh ERRORS
+The
+.Fn tmpfile
+function
+may fail and set the global variable
+.Va errno
+for any of the errors specified for the library functions
+.Xr fdopen 3
+or
+.Xr mkstemp 3 .
+.Pp
+The
+.Fn tmpnam
+function
+may fail and set
+.Va errno
+for any of the errors specified for the library function
+.Xr mktemp 3 .
+.Pp
+The
+.Fn tempnam
+function
+may fail and set
+.Va errno
+for any of the errors specified for the library functions
+.Xr malloc 3
+or
+.Xr mktemp 3 .
+.Sh SEE ALSO
+.Xr mkstemp 3 ,
+.Xr mktemp 3
+.Sh STANDARDS
+The
+.Fn tmpfile
+and
+.Fn tmpnam
+functions
+conform to
+.St -ansiC .
+.Sh BUGS
+These interfaces are provided for System V and
+.Tn ANSI
+compatibility only.
+The
+.Xr mkstemp 3
+interface is strongly preferred.
+.Pp
+There are four important problems with these interfaces (as well as
+with the historic
+.Xr mktemp 3
+interface).
+First, there is an obvious race between file name selection and file
+creation and deletion.
+Second, most historic implementations provide only a limited number
+of possible temporary file names (usually 26) before file names will
+start being recycled.
+Third, the System V implementations of these functions (and of
+.Xr mktemp )
+use the
+.Xr access 2
+function to determine whether or not the temporary file may be created.
+This has obvious ramifications for setuid or setgid programs, complicating
+the portable use of these interfaces in such programs.
+Finally, there is no specification of the permissions with which the
+temporary files are created.
+.Pp
+This implementation does not have these flaws, but portable software
+cannot depend on that.
+In particular, the
+.Fn tmpfile
+interface should not be used in software expected to be used on other systems
+if there is any possibility that the user does not wish the temporary file to
+be publicly readable and writable.
diff --git a/lib/libc/stdio/tmpnam.c b/lib/libc/stdio/tmpnam.c
new file mode 100644
index 0000000..ce86482
--- /dev/null
+++ b/lib/libc/stdio/tmpnam.c
@@ -0,0 +1,58 @@
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)tmpnam.c	8.3 (Berkeley) 3/28/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <stdio.h>
+#include <unistd.h>
+
+char *
+tmpnam(s)
+	char *s;
+{
+	static u_long tmpcount;
+	static char buf[L_tmpnam];
+
+	if (s == NULL)
+		s = buf;
+	(void)snprintf(s, L_tmpnam, "%stmp.%lu.XXXXXX", P_tmpdir, tmpcount);
+	++tmpcount;
+	return (mktemp(s));
+}
diff --git a/lib/libc/stdio/ungetc.3 b/lib/libc/stdio/ungetc.3
new file mode 100644
index 0000000..e88b64f
--- /dev/null
+++ b/lib/libc/stdio/ungetc.3
@@ -0,0 +1,95 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)ungetc.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt UNGETC 3
+.Os
+.Sh NAME
+.Nm ungetc
+.Nd un-get character from input stream
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft int
+.Fn ungetc "int c" "FILE *stream"
+.Sh DESCRIPTION
+The
+.Fn ungetc
+function pushes the character
+.Fa c
+(converted to an unsigned char)
+back onto the input stream pointed to by
+.Fa stream .
+The pushed-backed characters will be returned by subsequent reads on the
+stream (in reverse order).
+A successful intervening call, using the same stream, to one of the file
+positioning functions
+.Po
+.Xr fseek 3 ,
+.Xr fsetpos 3 ,
+or
+.Xr rewind 3
+.Pc
+will discard the pushed back characters.
+.Pp
+One character of push-back is guaranteed,
+but as long as there is
+sufficient memory, an effectively infinite amount of pushback is allowed.
+.Pp
+If a character is successfully pushed-back,
+the end-of-file indicator for the stream is cleared.
+.Sh RETURN VALUES
+The
+.Fn ungetc
+function
+returns
+the character pushed-back after the conversion, or
+.Dv EOF
+if the operation fails.
+If the value of the argument
+.Fa c
+character equals
+.Dv EOF ,
+the operation will fail and the stream will remain unchanged.
+.Sh SEE ALSO
+.Xr getc 3 ,
+.Xr fseek 3 ,
+.Xr setvbuf 3
+.Sh STANDARDS
+The
+.Fn ungetc
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/stdio/ungetc.c b/lib/libc/stdio/ungetc.c
new file mode 100644
index 0000000..deaed75
--- /dev/null
+++ b/lib/libc/stdio/ungetc.c
@@ -0,0 +1,148 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ungetc.c	8.2 (Berkeley) 11/3/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "local.h"
+
+/*
+ * Expand the ungetc buffer `in place'.  That is, adjust fp->_p when
+ * the buffer moves, so that it points the same distance from the end,
+ * and move the bytes in the buffer around as necessary so that they
+ * are all at the end (stack-style).
+ */
+static
+__submore(fp)
+	register FILE *fp;
+{
+	register int i;
+	register unsigned char *p;
+
+	if (fp->_ub._base == fp->_ubuf) {
+		/*
+		 * Get a new buffer (rather than expanding the old one).
+		 */
+		if ((p = malloc((size_t)BUFSIZ)) == NULL)
+			return (EOF);
+		fp->_ub._base = p;
+		fp->_ub._size = BUFSIZ;
+		p += BUFSIZ - sizeof(fp->_ubuf);
+		for (i = sizeof(fp->_ubuf); --i >= 0;)
+			p[i] = fp->_ubuf[i];
+		fp->_p = p;
+		return (0);
+	}
+	i = fp->_ub._size;
+	p = realloc(fp->_ub._base, i << 1);
+	if (p == NULL)
+		return (EOF);
+	/* no overlap (hence can use memcpy) because we doubled the size */
+	(void)memcpy((void *)(p + i), (void *)p, (size_t)i);
+	fp->_p = p + i;
+	fp->_ub._base = p;
+	fp->_ub._size = i << 1;
+	return (0);
+}
+
+ungetc(c, fp)
+	int c;
+	register FILE *fp;
+{
+	if (c == EOF)
+		return (EOF);
+	if (!__sdidinit)
+		__sinit();
+	if ((fp->_flags & __SRD) == 0) {
+		/*
+		 * Not already reading: no good unless reading-and-writing.
+		 * Otherwise, flush any current write stuff.
+		 */
+		if ((fp->_flags & __SRW) == 0)
+			return (EOF);
+		if (fp->_flags & __SWR) {
+			if (__sflush(fp))
+				return (EOF);
+			fp->_flags &= ~__SWR;
+			fp->_w = 0;
+			fp->_lbfsize = 0;
+		}
+		fp->_flags |= __SRD;
+	}
+	c = (unsigned char)c;
+
+	/*
+	 * If we are in the middle of ungetc'ing, just continue.
+	 * This may require expanding the current ungetc buffer.
+	 */
+	if (HASUB(fp)) {
+		if (fp->_r >= fp->_ub._size && __submore(fp))
+			return (EOF);
+		*--fp->_p = c;
+		fp->_r++;
+		return (c);
+	}
+	fp->_flags &= ~__SEOF;
+
+	/*
+	 * If we can handle this by simply backing up, do so,
+	 * but never replace the original character.
+	 * (This makes sscanf() work when scanning `const' data.)
+	 */
+	if (fp->_bf._base != NULL && fp->_p > fp->_bf._base &&
+	    fp->_p[-1] == c) {
+		fp->_p--;
+		fp->_r++;
+		return (c);
+	}
+
+	/*
+	 * Create an ungetc buffer.
+	 * Initially, we will use the `reserve' buffer.
+	 */
+	fp->_ur = fp->_r;
+	fp->_up = fp->_p;
+	fp->_ub._base = fp->_ubuf;
+	fp->_ub._size = sizeof(fp->_ubuf);
+	fp->_ubuf[sizeof(fp->_ubuf) - 1] = c;
+	fp->_p = &fp->_ubuf[sizeof(fp->_ubuf) - 1];
+	fp->_r = 1;
+	return (c);
+}
diff --git a/lib/libc/stdio/vfprintf.c b/lib/libc/stdio/vfprintf.c
new file mode 100644
index 0000000..f53db61
--- /dev/null
+++ b/lib/libc/stdio/vfprintf.c
@@ -0,0 +1,867 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)vfprintf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Actual printf innards.
+ *
+ * This code is large and complicated...
+ */
+
+#include <sys/types.h>
+
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+#include "local.h"
+#include "fvwrite.h"
+
+/* Define FLOATING_POINT to get floating point. */
+#define	FLOATING_POINT
+
+/*
+ * Flush out all the vectors defined by the given uio,
+ * then reset it so that it can be reused.
+ */
+static int
+__sprint(fp, uio)
+	FILE *fp;
+	register struct __suio *uio;
+{
+	register int err;
+
+	if (uio->uio_resid == 0) {
+		uio->uio_iovcnt = 0;
+		return (0);
+	}
+	err = __sfvwrite(fp, uio);
+	uio->uio_resid = 0;
+	uio->uio_iovcnt = 0;
+	return (err);
+}
+
+/*
+ * Helper function for `fprintf to unbuffered unix file': creates a
+ * temporary buffer.  We only work on write-only files; this avoids
+ * worries about ungetc buffers and so forth.
+ */
+static int
+__sbprintf(fp, fmt, ap)
+	register FILE *fp;
+	const char *fmt;
+	va_list ap;
+{
+	int ret;
+	FILE fake;
+	unsigned char buf[BUFSIZ];
+
+	/* copy the important variables */
+	fake._flags = fp->_flags & ~__SNBF;
+	fake._file = fp->_file;
+	fake._cookie = fp->_cookie;
+	fake._write = fp->_write;
+
+	/* set up the buffer */
+	fake._bf._base = fake._p = buf;
+	fake._bf._size = fake._w = sizeof(buf);
+	fake._lbfsize = 0;	/* not actually used, but Just In Case */
+
+	/* do the work, then copy any error status */
+	ret = vfprintf(&fake, fmt, ap);
+	if (ret >= 0 && fflush(&fake))
+		ret = EOF;
+	if (fake._flags & __SERR)
+		fp->_flags |= __SERR;
+	return (ret);
+}
+
+/*
+ * Macros for converting digits to letters and vice versa
+ */
+#define	to_digit(c)	((c) - '0')
+#define is_digit(c)	((unsigned)to_digit(c) <= 9)
+#define	to_char(n)	((n) + '0')
+
+/*
+ * Convert an unsigned long to ASCII for printf purposes, returning
+ * a pointer to the first character of the string representation.
+ * Octal numbers can be forced to have a leading zero; hex numbers
+ * use the given digits.
+ */
+static char *
+__ultoa(val, endp, base, octzero, xdigs)
+	register u_long val;
+	char *endp;
+	int base, octzero;
+	char *xdigs;
+{
+	register char *cp = endp;
+	register long sval;
+
+	/*
+	 * Handle the three cases separately, in the hope of getting
+	 * better/faster code.
+	 */
+	switch (base) {
+	case 10:
+		if (val < 10) {	/* many numbers are 1 digit */
+			*--cp = to_char(val);
+			return (cp);
+		}
+		/*
+		 * On many machines, unsigned arithmetic is harder than
+		 * signed arithmetic, so we do at most one unsigned mod and
+		 * divide; this is sufficient to reduce the range of
+		 * the incoming value to where signed arithmetic works.
+		 */
+		if (val > LONG_MAX) {
+			*--cp = to_char(val % 10);
+			sval = val / 10;
+		} else
+			sval = val;
+		do {
+			*--cp = to_char(sval % 10);
+			sval /= 10;
+		} while (sval != 0);
+		break;
+
+	case 8:
+		do {
+			*--cp = to_char(val & 7);
+			val >>= 3;
+		} while (val);
+		if (octzero && *cp != '0')
+			*--cp = '0';
+		break;
+
+	case 16:
+		do {
+			*--cp = xdigs[val & 15];
+			val >>= 4;
+		} while (val);
+		break;
+
+	default:			/* oops */
+		abort();
+	}
+	return (cp);
+}
+
+/* Identical to __ultoa, but for quads. */
+static char *
+__uqtoa(val, endp, base, octzero, xdigs)
+	register u_quad_t val;
+	char *endp;
+	int base, octzero;
+	char *xdigs;
+{
+	register char *cp = endp;
+	register quad_t sval;
+
+	/* quick test for small values; __ultoa is typically much faster */
+	/* (perhaps instead we should run until small, then call __ultoa?) */
+	if (val <= ULONG_MAX)
+		return (__ultoa((u_long)val, endp, base, octzero, xdigs));
+	switch (base) {
+	case 10:
+		if (val < 10) {
+			*--cp = to_char(val % 10);
+			return (cp);
+		}
+		if (val > QUAD_MAX) {
+			*--cp = to_char(val % 10);
+			sval = val / 10;
+		} else
+			sval = val;
+		do {
+			*--cp = to_char(sval % 10);
+			sval /= 10;
+		} while (sval != 0);
+		break;
+
+	case 8:
+		do {
+			*--cp = to_char(val & 7);
+			val >>= 3;
+		} while (val);
+		if (octzero && *cp != '0')
+			*--cp = '0';
+		break;
+
+	case 16:
+		do {
+			*--cp = xdigs[val & 15];
+			val >>= 4;
+		} while (val);
+		break;
+
+	default:
+		abort();
+	}
+	return (cp);
+}
+
+#ifdef FLOATING_POINT
+#include <math.h>
+#include "floatio.h"
+
+#define	BUF		(MAXEXP+MAXFRACT+1)	/* + decimal point */
+#define	DEFPREC		6
+
+static char *cvt __P((double, int, int, char *, int *, int, int *));
+static int exponent __P((char *, int, int));
+
+#else /* no FLOATING_POINT */
+
+#define	BUF		68
+
+#endif /* FLOATING_POINT */
+
+
+/*
+ * Flags used during conversion.
+ */
+#define	ALT		0x001		/* alternate form */
+#define	HEXPREFIX	0x002		/* add 0x or 0X prefix */
+#define	LADJUST		0x004		/* left adjustment */
+#define	LONGDBL		0x008		/* long double; unimplemented */
+#define	LONGINT		0x010		/* long integer */
+#define	QUADINT		0x020		/* quad integer */
+#define	SHORTINT	0x040		/* short integer */
+#define	ZEROPAD		0x080		/* zero (as opposed to blank) pad */
+#define FPT		0x100		/* Floating point number */
+int
+vfprintf(fp, fmt0, ap)
+	FILE *fp;
+	const char *fmt0;
+	va_list ap;
+{
+	register char *fmt;	/* format string */
+	register int ch;	/* character from fmt */
+	register int n;		/* handy integer (short term usage) */
+	register char *cp;	/* handy char pointer (short term usage) */
+	register struct __siov *iovp;/* for PRINT macro */
+	register int flags;	/* flags as above */
+	int ret;		/* return value accumulator */
+	int width;		/* width from format (%8d), or 0 */
+	int prec;		/* precision from format (%.3d), or -1 */
+	char sign;		/* sign prefix (' ', '+', '-', or \0) */
+#ifdef FLOATING_POINT
+	char softsign;		/* temporary negative sign for floats */
+	double _double;		/* double precision arguments %[eEfgG] */
+	int expt;		/* integer value of exponent */
+	int expsize;		/* character count for expstr */
+	int ndig;		/* actual number of digits returned by cvt */
+	char expstr[7];		/* buffer for exponent string */
+#endif
+	u_long	ulval;		/* integer arguments %[diouxX] */
+	u_quad_t uqval;		/* %q integers */
+	int base;		/* base for [diouxX] conversion */
+	int dprec;		/* a copy of prec if [diouxX], 0 otherwise */
+	int fieldsz;		/* field size expanded by sign, etc */
+	int realsz;		/* field size expanded by dprec */
+	int size;		/* size of converted field or string */
+	char *xdigs;		/* digits for [xX] conversion */
+#define NIOV 8
+	struct __suio uio;	/* output information: summary */
+	struct __siov iov[NIOV];/* ... and individual io vectors */
+	char buf[BUF];		/* space for %c, %[diouxX], %[eEfgG] */
+	char ox[2];		/* space for 0x hex-prefix */
+
+	/*
+	 * Choose PADSIZE to trade efficiency vs. size.  If larger printf
+	 * fields occur frequently, increase PADSIZE and make the initialisers
+	 * below longer.
+	 */
+#define	PADSIZE	16		/* pad chunk size */
+	static char blanks[PADSIZE] =
+	 {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
+	static char zeroes[PADSIZE] =
+	 {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
+
+	/*
+	 * BEWARE, these `goto error' on error, and PAD uses `n'.
+	 */
+#define	PRINT(ptr, len) { \
+	iovp->iov_base = (ptr); \
+	iovp->iov_len = (len); \
+	uio.uio_resid += (len); \
+	iovp++; \
+	if (++uio.uio_iovcnt >= NIOV) { \
+		if (__sprint(fp, &uio)) \
+			goto error; \
+		iovp = iov; \
+	} \
+}
+#define	PAD(howmany, with) { \
+	if ((n = (howmany)) > 0) { \
+		while (n > PADSIZE) { \
+			PRINT(with, PADSIZE); \
+			n -= PADSIZE; \
+		} \
+		PRINT(with, n); \
+	} \
+}
+#define	FLUSH() { \
+	if (uio.uio_resid && __sprint(fp, &uio)) \
+		goto error; \
+	uio.uio_iovcnt = 0; \
+	iovp = iov; \
+}
+
+	/*
+	 * To extend shorts properly, we need both signed and unsigned
+	 * argument extraction methods.
+	 */
+#define	SARG() \
+	(flags&LONGINT ? va_arg(ap, long) : \
+	    flags&SHORTINT ? (long)(short)va_arg(ap, int) : \
+	    (long)va_arg(ap, int))
+#define	UARG() \
+	(flags&LONGINT ? va_arg(ap, u_long) : \
+	    flags&SHORTINT ? (u_long)(u_short)va_arg(ap, int) : \
+	    (u_long)va_arg(ap, u_int))
+
+	/* sorry, fprintf(read_only_file, "") returns EOF, not 0 */
+	if (cantwrite(fp))
+		return (EOF);
+
+	/* optimise fprintf(stderr) (and other unbuffered Unix files) */
+	if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) &&
+	    fp->_file >= 0)
+		return (__sbprintf(fp, fmt0, ap));
+
+	fmt = (char *)fmt0;
+	uio.uio_iov = iovp = iov;
+	uio.uio_resid = 0;
+	uio.uio_iovcnt = 0;
+	ret = 0;
+
+	/*
+	 * Scan the format for conversions (`%' character).
+	 */
+	for (;;) {
+		for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
+			/* void */;
+		if ((n = fmt - cp) != 0) {
+			PRINT(cp, n);
+			ret += n;
+		}
+		if (ch == '\0')
+			goto done;
+		fmt++;		/* skip over '%' */
+
+		flags = 0;
+		dprec = 0;
+		width = 0;
+		prec = -1;
+		sign = '\0';
+
+rflag:		ch = *fmt++;
+reswitch:	switch (ch) {
+		case ' ':
+			/*
+			 * ``If the space and + flags both appear, the space
+			 * flag will be ignored.''
+			 *	-- ANSI X3J11
+			 */
+			if (!sign)
+				sign = ' ';
+			goto rflag;
+		case '#':
+			flags |= ALT;
+			goto rflag;
+		case '*':
+			/*
+			 * ``A negative field width argument is taken as a
+			 * - flag followed by a positive field width.''
+			 *	-- ANSI X3J11
+			 * They don't exclude field widths read from args.
+			 */
+			if ((width = va_arg(ap, int)) >= 0)
+				goto rflag;
+			width = -width;
+			/* FALLTHROUGH */
+		case '-':
+			flags |= LADJUST;
+			goto rflag;
+		case '+':
+			sign = '+';
+			goto rflag;
+		case '.':
+			if ((ch = *fmt++) == '*') {
+				n = va_arg(ap, int);
+				prec = n < 0 ? -1 : n;
+				goto rflag;
+			}
+			n = 0;
+			while (is_digit(ch)) {
+				n = 10 * n + to_digit(ch);
+				ch = *fmt++;
+			}
+			prec = n < 0 ? -1 : n;
+			goto reswitch;
+		case '0':
+			/*
+			 * ``Note that 0 is taken as a flag, not as the
+			 * beginning of a field width.''
+			 *	-- ANSI X3J11
+			 */
+			flags |= ZEROPAD;
+			goto rflag;
+		case '1': case '2': case '3': case '4':
+		case '5': case '6': case '7': case '8': case '9':
+			n = 0;
+			do {
+				n = 10 * n + to_digit(ch);
+				ch = *fmt++;
+			} while (is_digit(ch));
+			width = n;
+			goto reswitch;
+#ifdef FLOATING_POINT
+		case 'L':
+			flags |= LONGDBL;
+			goto rflag;
+#endif
+		case 'h':
+			flags |= SHORTINT;
+			goto rflag;
+		case 'l':
+			flags |= LONGINT;
+			goto rflag;
+		case 'q':
+			flags |= QUADINT;
+			goto rflag;
+		case 'c':
+			*(cp = buf) = va_arg(ap, int);
+			size = 1;
+			sign = '\0';
+			break;
+		case 'D':
+			flags |= LONGINT;
+			/*FALLTHROUGH*/
+		case 'd':
+		case 'i':
+			if (flags & QUADINT) {
+				uqval = va_arg(ap, quad_t);
+				if ((quad_t)uqval < 0) {
+					uqval = -uqval;
+					sign = '-';
+				}
+			} else {
+				ulval = SARG();
+				if ((long)ulval < 0) {
+					ulval = -ulval;
+					sign = '-';
+				}
+			}
+			base = 10;
+			goto number;
+#ifdef FLOATING_POINT
+		case 'e':
+		case 'E':
+		case 'f':
+			goto fp_begin;
+		case 'g':
+		case 'G':
+			if (prec == 0)
+				prec = 1;
+fp_begin:		if (prec == -1)
+				prec = DEFPREC;
+			if (flags & LONGDBL)
+				_double = (double)va_arg(ap, long double);
+			else
+				_double = va_arg(ap, double);
+			/* do this before tricky precision changes */
+			if (isinf(_double)) {
+				if (_double < 0)
+					sign = '-';
+				cp = "Inf";
+				size = 3;
+				break;
+			}
+			if (isnan(_double)) {
+				cp = "NaN";
+				size = 3;
+				break;
+			}
+			flags |= FPT;
+			cp = cvt(_double, prec, flags, &softsign,
+				&expt, ch, &ndig);
+			if (ch == 'g' || ch == 'G') {
+				if (expt <= -4 || expt > prec)
+					ch = (ch == 'g') ? 'e' : 'E';
+				else
+					ch = 'g';
+			}
+			if (ch <= 'e') {	/* 'e' or 'E' fmt */
+				--expt;
+				expsize = exponent(expstr, expt, ch);
+				size = expsize + ndig;
+				if (ndig > 1 || flags & ALT)
+					++size;
+			} else if (ch == 'f') {		/* f fmt */
+				if (expt > 0) {
+					size = expt;
+					if (prec || flags & ALT)
+						size += prec + 1;
+				} else	/* "0.X" */
+					size = prec + 2;
+			} else if (expt >= ndig) {	/* fixed g fmt */
+				size = expt;
+				if (flags & ALT)
+					++size;
+			} else
+				size = ndig + (expt > 0 ?
+					1 : 2 - expt);
+
+			if (softsign)
+				sign = '-';
+			break;
+#endif /* FLOATING_POINT */
+		case 'n':
+			if (flags & QUADINT)
+				*va_arg(ap, quad_t *) = ret;
+			else if (flags & LONGINT)
+				*va_arg(ap, long *) = ret;
+			else if (flags & SHORTINT)
+				*va_arg(ap, short *) = ret;
+			else
+				*va_arg(ap, int *) = ret;
+			continue;	/* no output */
+		case 'O':
+			flags |= LONGINT;
+			/*FALLTHROUGH*/
+		case 'o':
+			if (flags & QUADINT)
+				uqval = va_arg(ap, u_quad_t);
+			else
+				ulval = UARG();
+			base = 8;
+			goto nosign;
+		case 'p':
+			/*
+			 * ``The argument shall be a pointer to void.  The
+			 * value of the pointer is converted to a sequence
+			 * of printable characters, in an implementation-
+			 * defined manner.''
+			 *	-- ANSI X3J11
+			 */
+			ulval = (u_long)va_arg(ap, void *);
+			base = 16;
+			xdigs = "0123456789abcdef";
+			flags = (flags & ~QUADINT) | HEXPREFIX;
+			ch = 'x';
+			goto nosign;
+		case 's':
+			if ((cp = va_arg(ap, char *)) == NULL)
+				cp = "(null)";
+			if (prec >= 0) {
+				/*
+				 * can't use strlen; can only look for the
+				 * NUL in the first `prec' characters, and
+				 * strlen() will go further.
+				 */
+				char *p = memchr(cp, 0, prec);
+
+				if (p != NULL) {
+					size = p - cp;
+					if (size > prec)
+						size = prec;
+				} else
+					size = prec;
+			} else
+				size = strlen(cp);
+			sign = '\0';
+			break;
+		case 'U':
+			flags |= LONGINT;
+			/*FALLTHROUGH*/
+		case 'u':
+			if (flags & QUADINT)
+				uqval = va_arg(ap, u_quad_t);
+			else
+				ulval = UARG();
+			base = 10;
+			goto nosign;
+		case 'X':
+			xdigs = "0123456789ABCDEF";
+			goto hex;
+		case 'x':
+			xdigs = "0123456789abcdef";
+hex:			if (flags & QUADINT)
+				uqval = va_arg(ap, u_quad_t);
+			else
+				ulval = UARG();
+			base = 16;
+			/* leading 0x/X only if non-zero */
+			if (flags & ALT &&
+			    (flags & QUADINT ? uqval != 0 : ulval != 0))
+				flags |= HEXPREFIX;
+
+			/* unsigned conversions */
+nosign:			sign = '\0';
+			/*
+			 * ``... diouXx conversions ... if a precision is
+			 * specified, the 0 flag will be ignored.''
+			 *	-- ANSI X3J11
+			 */
+number:			if ((dprec = prec) >= 0)
+				flags &= ~ZEROPAD;
+
+			/*
+			 * ``The result of converting a zero value with an
+			 * explicit precision of zero is no characters.''
+			 *	-- ANSI X3J11
+			 */
+			cp = buf + BUF;
+			if (flags & QUADINT) {
+				if (uqval != 0 || prec != 0)
+					cp = __uqtoa(uqval, cp, base,
+					    flags & ALT, xdigs);
+			} else {
+				if (ulval != 0 || prec != 0)
+					cp = __ultoa(ulval, cp, base,
+					    flags & ALT, xdigs);
+			}
+			size = buf + BUF - cp;
+			break;
+		default:	/* "%?" prints ?, unless ? is NUL */
+			if (ch == '\0')
+				goto done;
+			/* pretend it was %c with argument ch */
+			cp = buf;
+			*cp = ch;
+			size = 1;
+			sign = '\0';
+			break;
+		}
+
+		/*
+		 * All reasonable formats wind up here.  At this point, `cp'
+		 * points to a string which (if not flags&LADJUST) should be
+		 * padded out to `width' places.  If flags&ZEROPAD, it should
+		 * first be prefixed by any sign or other prefix; otherwise,
+		 * it should be blank padded before the prefix is emitted.
+		 * After any left-hand padding and prefixing, emit zeroes
+		 * required by a decimal [diouxX] precision, then print the
+		 * string proper, then emit zeroes required by any leftover
+		 * floating precision; finally, if LADJUST, pad with blanks.
+		 *
+		 * Compute actual size, so we know how much to pad.
+		 * fieldsz excludes decimal prec; realsz includes it.
+		 */
+		fieldsz = size;
+		if (sign)
+			fieldsz++;
+		else if (flags & HEXPREFIX)
+			fieldsz += 2;
+		realsz = dprec > fieldsz ? dprec : fieldsz;
+
+		/* right-adjusting blank padding */
+		if ((flags & (LADJUST|ZEROPAD)) == 0)
+			PAD(width - realsz, blanks);
+
+		/* prefix */
+		if (sign) {
+			PRINT(&sign, 1);
+		} else if (flags & HEXPREFIX) {
+			ox[0] = '0';
+			ox[1] = ch;
+			PRINT(ox, 2);
+		}
+
+		/* right-adjusting zero padding */
+		if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)
+			PAD(width - realsz, zeroes);
+
+		/* leading zeroes from decimal precision */
+		PAD(dprec - fieldsz, zeroes);
+
+		/* the string or number proper */
+#ifdef FLOATING_POINT
+		if ((flags & FPT) == 0) {
+			PRINT(cp, size);
+		} else {	/* glue together f_p fragments */
+			if (ch >= 'f') {	/* 'f' or 'g' */
+				if (_double == 0) {
+					/* kludge for __dtoa irregularity */
+					if (expt >= ndig &&
+					    (flags & ALT) == 0) {
+						PRINT("0", 1);
+					} else {
+						PRINT("0.", 2);
+						PAD(ndig - 1, zeroes);
+					}
+				} else if (expt <= 0) {
+					PRINT("0.", 2);
+					PAD(-expt, zeroes);
+					PRINT(cp, ndig);
+				} else if (expt >= ndig) {
+					PRINT(cp, ndig);
+					PAD(expt - ndig, zeroes);
+					if (flags & ALT)
+						PRINT(".", 1);
+				} else {
+					PRINT(cp, expt);
+					cp += expt;
+					PRINT(".", 1);
+					PRINT(cp, ndig-expt);
+				}
+			} else {	/* 'e' or 'E' */
+				if (ndig > 1 || flags & ALT) {
+					ox[0] = *cp++;
+					ox[1] = '.';
+					PRINT(ox, 2);
+					if (_double) {
+						PRINT(cp, ndig-1);
+					} else	/* 0.[0..] */
+						/* __dtoa irregularity */
+						PAD(ndig - 1, zeroes);
+				} else	/* XeYYY */
+					PRINT(cp, 1);
+				PRINT(expstr, expsize);
+			}
+		}
+#else
+		PRINT(cp, size);
+#endif
+		/* left-adjusting padding (always blank) */
+		if (flags & LADJUST)
+			PAD(width - realsz, blanks);
+
+		/* finally, adjust ret */
+		ret += width > realsz ? width : realsz;
+
+		FLUSH();	/* copy out the I/O vectors */
+	}
+done:
+	FLUSH();
+error:
+	return (__sferror(fp) ? EOF : ret);
+	/* NOTREACHED */
+}
+
+#ifdef FLOATING_POINT
+
+extern char *__dtoa __P((double, int, int, int *, int *, char **));
+
+static char *
+cvt(value, ndigits, flags, sign, decpt, ch, length)
+	double value;
+	int ndigits, flags, *decpt, ch, *length;
+	char *sign;
+{
+	int mode, dsgn;
+	char *digits, *bp, *rve;
+
+	if (ch == 'f')
+		mode = 3;		/* ndigits after the decimal point */
+	else {
+		/*
+		 * To obtain ndigits after the decimal point for the 'e'
+		 * and 'E' formats, round to ndigits + 1 significant
+		 * figures.
+		 */
+		if (ch == 'e' || ch == 'E')
+			ndigits++;
+		mode = 2;		/* ndigits significant digits */
+	}
+	if (value < 0) {
+		value = -value;
+		*sign = '-';
+	} else
+		*sign = '\000';
+	digits = __dtoa(value, mode, ndigits, decpt, &dsgn, &rve);
+	if ((ch != 'g' && ch != 'G') || flags & ALT) {
+		/* print trailing zeros */
+		bp = digits + ndigits;
+		if (ch == 'f') {
+			if (*digits == '0' && value)
+				*decpt = -ndigits + 1;
+			bp += *decpt;
+		}
+		if (value == 0)	/* kludge for __dtoa irregularity */
+			rve = bp;
+		while (rve < bp)
+			*rve++ = '0';
+	}
+	*length = rve - digits;
+	return (digits);
+}
+
+static int
+exponent(p0, exp, fmtch)
+	char *p0;
+	int exp, fmtch;
+{
+	register char *p, *t;
+	char expbuf[MAXEXP];
+
+	p = p0;
+	*p++ = fmtch;
+	if (exp < 0) {
+		exp = -exp;
+		*p++ = '-';
+	}
+	else
+		*p++ = '+';
+	t = expbuf + MAXEXP;
+	if (exp > 9) {
+		do {
+			*--t = to_char(exp % 10);
+		} while ((exp /= 10) > 9);
+		*--t = to_char(exp);
+		for (; t < expbuf + MAXEXP; *p++ = *t++);
+	}
+	else {
+		*p++ = '0';
+		*p++ = to_char(exp);
+	}
+	return (p - p0);
+}
+#endif /* FLOATING_POINT */
diff --git a/lib/libc/stdio/vfscanf.c b/lib/libc/stdio/vfscanf.c
new file mode 100644
index 0000000..22ed5a0
--- /dev/null
+++ b/lib/libc/stdio/vfscanf.c
@@ -0,0 +1,748 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)vfscanf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+#include "local.h"
+
+#define FLOATING_POINT
+
+#include "floatio.h"
+#define	BUF		513	/* Maximum length of numeric string. */
+
+/*
+ * Flags used during conversion.
+ */
+#define	LONG		0x01	/* l: long or double */
+#define	LONGDBL		0x02	/* L: long double; unimplemented */
+#define	SHORT		0x04	/* h: short */
+#define	SUPPRESS	0x08	/* suppress assignment */
+#define	POINTER		0x10	/* weird %p pointer (`fake hex') */
+#define	NOSKIP		0x20	/* do not skip blanks */
+
+/*
+ * The following are used in numeric conversions only:
+ * SIGNOK, NDIGITS, DPTOK, and EXPOK are for floating point;
+ * SIGNOK, NDIGITS, PFXOK, and NZDIGITS are for integral.
+ */
+#define	SIGNOK		0x40	/* +/- is (still) legal */
+#define	NDIGITS		0x80	/* no digits detected */
+
+#define	DPTOK		0x100	/* (float) decimal point is still legal */
+#define	EXPOK		0x200	/* (float) exponent (e+3, etc) still legal */
+
+#define	PFXOK		0x100	/* 0x prefix is (still) legal */
+#define	NZDIGITS	0x200	/* no zero digits detected */
+
+/*
+ * Conversion types.
+ */
+#define	CT_CHAR		0	/* %c conversion */
+#define	CT_CCL		1	/* %[...] conversion */
+#define	CT_STRING	2	/* %s conversion */
+#define	CT_INT		3	/* integer, i.e., strtol or strtoul */
+#define	CT_FLOAT	4	/* floating, i.e., strtod */
+
+#define u_char unsigned char
+#define u_long unsigned long
+
+static u_char *__sccl();
+
+/*
+ * vfscanf
+ */
+__svfscanf(fp, fmt0, ap)
+	register FILE *fp;
+	char const *fmt0;
+	va_list ap;
+{
+	register u_char *fmt = (u_char *)fmt0;
+	register int c;		/* character from format, or conversion */
+	register size_t width;	/* field width, or 0 */
+	register char *p;	/* points into all kinds of strings */
+	register int n;		/* handy integer */
+	register int flags;	/* flags as defined above */
+	register char *p0;	/* saves original value of p when necessary */
+	int nassigned;		/* number of fields assigned */
+	int nread;		/* number of characters consumed from fp */
+	int base;		/* base argument to strtol/strtoul */
+	u_long (*ccfn)();	/* conversion function (strtol/strtoul) */
+	char ccltab[256];	/* character class table for %[...] */
+	char buf[BUF];		/* buffer for numeric conversions */
+
+	/* `basefix' is used to avoid `if' tests in the integer scanner */
+	static short basefix[17] =
+		{ 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
+
+	nassigned = 0;
+	nread = 0;
+	base = 0;		/* XXX just to keep gcc happy */
+	ccfn = NULL;		/* XXX just to keep gcc happy */
+	for (;;) {
+		c = *fmt++;
+		if (c == 0)
+			return (nassigned);
+		if (isspace(c)) {
+			for (;;) {
+				if (fp->_r <= 0 && __srefill(fp))
+					return (nassigned);
+				if (!isspace(*fp->_p))
+					break;
+				nread++, fp->_r--, fp->_p++;
+			}
+			continue;
+		}
+		if (c != '%')
+			goto literal;
+		width = 0;
+		flags = 0;
+		/*
+		 * switch on the format.  continue if done;
+		 * break once format type is derived.
+		 */
+again:		c = *fmt++;
+		switch (c) {
+		case '%':
+literal:
+			if (fp->_r <= 0 && __srefill(fp))
+				goto input_failure;
+			if (*fp->_p != c)
+				goto match_failure;
+			fp->_r--, fp->_p++;
+			nread++;
+			continue;
+
+		case '*':
+			flags |= SUPPRESS;
+			goto again;
+		case 'l':
+			flags |= LONG;
+			goto again;
+		case 'L':
+			flags |= LONGDBL;
+			goto again;
+		case 'h':
+			flags |= SHORT;
+			goto again;
+
+		case '0': case '1': case '2': case '3': case '4':
+		case '5': case '6': case '7': case '8': case '9':
+			width = width * 10 + c - '0';
+			goto again;
+
+		/*
+		 * Conversions.
+		 * Those marked `compat' are for 4.[123]BSD compatibility.
+		 *
+		 * (According to ANSI, E and X formats are supposed
+		 * to the same as e and x.  Sorry about that.)
+		 */
+		case 'D':	/* compat */
+			flags |= LONG;
+			/* FALLTHROUGH */
+		case 'd':
+			c = CT_INT;
+			ccfn = (u_long (*)())strtol;
+			base = 10;
+			break;
+
+		case 'i':
+			c = CT_INT;
+			ccfn = (u_long (*)())strtol;
+			base = 0;
+			break;
+
+		case 'O':	/* compat */
+			flags |= LONG;
+			/* FALLTHROUGH */
+		case 'o':
+			c = CT_INT;
+			ccfn = strtoul;
+			base = 8;
+			break;
+
+		case 'u':
+			c = CT_INT;
+			ccfn = strtoul;
+			base = 10;
+			break;
+
+		case 'X':	/* compat   XXX */
+			flags |= LONG;
+			/* FALLTHROUGH */
+		case 'x':
+			flags |= PFXOK;	/* enable 0x prefixing */
+			c = CT_INT;
+			ccfn = strtoul;
+			base = 16;
+			break;
+
+#ifdef FLOATING_POINT
+		case 'E':	/* compat   XXX */
+		case 'F':	/* compat */
+			flags |= LONG;
+			/* FALLTHROUGH */
+		case 'e': case 'f': case 'g':
+			c = CT_FLOAT;
+			break;
+#endif
+
+		case 's':
+			c = CT_STRING;
+			break;
+
+		case '[':
+			fmt = __sccl(ccltab, fmt);
+			flags |= NOSKIP;
+			c = CT_CCL;
+			break;
+
+		case 'c':
+			flags |= NOSKIP;
+			c = CT_CHAR;
+			break;
+
+		case 'p':	/* pointer format is like hex */
+			flags |= POINTER | PFXOK;
+			c = CT_INT;
+			ccfn = strtoul;
+			base = 16;
+			break;
+
+		case 'n':
+			if (flags & SUPPRESS)	/* ??? */
+				continue;
+			if (flags & SHORT)
+				*va_arg(ap, short *) = nread;
+			else if (flags & LONG)
+				*va_arg(ap, long *) = nread;
+			else
+				*va_arg(ap, int *) = nread;
+			continue;
+
+		/*
+		 * Disgusting backwards compatibility hacks.	XXX
+		 */
+		case '\0':	/* compat */
+			return (EOF);
+
+		default:	/* compat */
+			if (isupper(c))
+				flags |= LONG;
+			c = CT_INT;
+			ccfn = (u_long (*)())strtol;
+			base = 10;
+			break;
+		}
+
+		/*
+		 * We have a conversion that requires input.
+		 */
+		if (fp->_r <= 0 && __srefill(fp))
+			goto input_failure;
+
+		/*
+		 * Consume leading white space, except for formats
+		 * that suppress this.
+		 */
+		if ((flags & NOSKIP) == 0) {
+			while (isspace(*fp->_p)) {
+				nread++;
+				if (--fp->_r > 0)
+					fp->_p++;
+				else if (__srefill(fp))
+					goto input_failure;
+			}
+			/*
+			 * Note that there is at least one character in
+			 * the buffer, so conversions that do not set NOSKIP
+			 * ca no longer result in an input failure.
+			 */
+		}
+
+		/*
+		 * Do the conversion.
+		 */
+		switch (c) {
+
+		case CT_CHAR:
+			/* scan arbitrary characters (sets NOSKIP) */
+			if (width == 0)
+				width = 1;
+			if (flags & SUPPRESS) {
+				size_t sum = 0;
+				for (;;) {
+					if ((n = fp->_r) < width) {
+						sum += n;
+						width -= n;
+						fp->_p += n;
+						if (__srefill(fp)) {
+							if (sum == 0)
+							    goto input_failure;
+							break;
+						}
+					} else {
+						sum += width;
+						fp->_r -= width;
+						fp->_p += width;
+						break;
+					}
+				}
+				nread += sum;
+			} else {
+				size_t r = fread((void *)va_arg(ap, char *), 1,
+				    width, fp);
+
+				if (r == 0)
+					goto input_failure;
+				nread += r;
+				nassigned++;
+			}
+			break;
+
+		case CT_CCL:
+			/* scan a (nonempty) character class (sets NOSKIP) */
+			if (width == 0)
+				width = ~0;	/* `infinity' */
+			/* take only those things in the class */
+			if (flags & SUPPRESS) {
+				n = 0;
+				while (ccltab[*fp->_p]) {
+					n++, fp->_r--, fp->_p++;
+					if (--width == 0)
+						break;
+					if (fp->_r <= 0 && __srefill(fp)) {
+						if (n == 0)
+							goto input_failure;
+						break;
+					}
+				}
+				if (n == 0)
+					goto match_failure;
+			} else {
+				p0 = p = va_arg(ap, char *);
+				while (ccltab[*fp->_p]) {
+					fp->_r--;
+					*p++ = *fp->_p++;
+					if (--width == 0)
+						break;
+					if (fp->_r <= 0 && __srefill(fp)) {
+						if (p == p0)
+							goto input_failure;
+						break;
+					}
+				}
+				n = p - p0;
+				if (n == 0)
+					goto match_failure;
+				*p = 0;
+				nassigned++;
+			}
+			nread += n;
+			break;
+
+		case CT_STRING:
+			/* like CCL, but zero-length string OK, & no NOSKIP */
+			if (width == 0)
+				width = ~0;
+			if (flags & SUPPRESS) {
+				n = 0;
+				while (!isspace(*fp->_p)) {
+					n++, fp->_r--, fp->_p++;
+					if (--width == 0)
+						break;
+					if (fp->_r <= 0 && __srefill(fp))
+						break;
+				}
+				nread += n;
+			} else {
+				p0 = p = va_arg(ap, char *);
+				while (!isspace(*fp->_p)) {
+					fp->_r--;
+					*p++ = *fp->_p++;
+					if (--width == 0)
+						break;
+					if (fp->_r <= 0 && __srefill(fp))
+						break;
+				}
+				*p = 0;
+				nread += p - p0;
+				nassigned++;
+			}
+			continue;
+
+		case CT_INT:
+			/* scan an integer as if by strtol/strtoul */
+#ifdef hardway
+			if (width == 0 || width > sizeof(buf) - 1)
+				width = sizeof(buf) - 1;
+#else
+			/* size_t is unsigned, hence this optimisation */
+			if (--width > sizeof(buf) - 2)
+				width = sizeof(buf) - 2;
+			width++;
+#endif
+			flags |= SIGNOK | NDIGITS | NZDIGITS;
+			for (p = buf; width; width--) {
+				c = *fp->_p;
+				/*
+				 * Switch on the character; `goto ok'
+				 * if we accept it as a part of number.
+				 */
+				switch (c) {
+
+				/*
+				 * The digit 0 is always legal, but is
+				 * special.  For %i conversions, if no
+				 * digits (zero or nonzero) have been
+				 * scanned (only signs), we will have
+				 * base==0.  In that case, we should set
+				 * it to 8 and enable 0x prefixing.
+				 * Also, if we have not scanned zero digits
+				 * before this, do not turn off prefixing
+				 * (someone else will turn it off if we
+				 * have scanned any nonzero digits).
+				 */
+				case '0':
+					if (base == 0) {
+						base = 8;
+						flags |= PFXOK;
+					}
+					if (flags & NZDIGITS)
+					    flags &= ~(SIGNOK|NZDIGITS|NDIGITS);
+					else
+					    flags &= ~(SIGNOK|PFXOK|NDIGITS);
+					goto ok;
+
+				/* 1 through 7 always legal */
+				case '1': case '2': case '3':
+				case '4': case '5': case '6': case '7':
+					base = basefix[base];
+					flags &= ~(SIGNOK | PFXOK | NDIGITS);
+					goto ok;
+
+				/* digits 8 and 9 ok iff decimal or hex */
+				case '8': case '9':
+					base = basefix[base];
+					if (base <= 8)
+						break;	/* not legal here */
+					flags &= ~(SIGNOK | PFXOK | NDIGITS);
+					goto ok;
+
+				/* letters ok iff hex */
+				case 'A': case 'B': case 'C':
+				case 'D': case 'E': case 'F':
+				case 'a': case 'b': case 'c':
+				case 'd': case 'e': case 'f':
+					/* no need to fix base here */
+					if (base <= 10)
+						break;	/* not legal here */
+					flags &= ~(SIGNOK | PFXOK | NDIGITS);
+					goto ok;
+
+				/* sign ok only as first character */
+				case '+': case '-':
+					if (flags & SIGNOK) {
+						flags &= ~SIGNOK;
+						goto ok;
+					}
+					break;
+
+				/* x ok iff flag still set & 2nd char */
+				case 'x': case 'X':
+					if (flags & PFXOK && p == buf + 1) {
+						base = 16;	/* if %i */
+						flags &= ~PFXOK;
+						goto ok;
+					}
+					break;
+				}
+
+				/*
+				 * If we got here, c is not a legal character
+				 * for a number.  Stop accumulating digits.
+				 */
+				break;
+		ok:
+				/*
+				 * c is legal: store it and look at the next.
+				 */
+				*p++ = c;
+				if (--fp->_r > 0)
+					fp->_p++;
+				else if (__srefill(fp))
+					break;		/* EOF */
+			}
+			/*
+			 * If we had only a sign, it is no good; push
+			 * back the sign.  If the number ends in `x',
+			 * it was [sign] '0' 'x', so push back the x
+			 * and treat it as [sign] '0'.
+			 */
+			if (flags & NDIGITS) {
+				if (p > buf)
+					(void) ungetc(*(u_char *)--p, fp);
+				goto match_failure;
+			}
+			c = ((u_char *)p)[-1];
+			if (c == 'x' || c == 'X') {
+				--p;
+				(void) ungetc(c, fp);
+			}
+			if ((flags & SUPPRESS) == 0) {
+				u_long res;
+
+				*p = 0;
+				res = (*ccfn)(buf, (char **)NULL, base);
+				if (flags & POINTER)
+					*va_arg(ap, void **) = (void *)res;
+				else if (flags & SHORT)
+					*va_arg(ap, short *) = res;
+				else if (flags & LONG)
+					*va_arg(ap, long *) = res;
+				else
+					*va_arg(ap, int *) = res;
+				nassigned++;
+			}
+			nread += p - buf;
+			break;
+
+#ifdef FLOATING_POINT
+		case CT_FLOAT:
+			/* scan a floating point number as if by strtod */
+#ifdef hardway
+			if (width == 0 || width > sizeof(buf) - 1)
+				width = sizeof(buf) - 1;
+#else
+			/* size_t is unsigned, hence this optimisation */
+			if (--width > sizeof(buf) - 2)
+				width = sizeof(buf) - 2;
+			width++;
+#endif
+			flags |= SIGNOK | NDIGITS | DPTOK | EXPOK;
+			for (p = buf; width; width--) {
+				c = *fp->_p;
+				/*
+				 * This code mimicks the integer conversion
+				 * code, but is much simpler.
+				 */
+				switch (c) {
+
+				case '0': case '1': case '2': case '3':
+				case '4': case '5': case '6': case '7':
+				case '8': case '9':
+					flags &= ~(SIGNOK | NDIGITS);
+					goto fok;
+
+				case '+': case '-':
+					if (flags & SIGNOK) {
+						flags &= ~SIGNOK;
+						goto fok;
+					}
+					break;
+				case '.':
+					if (flags & DPTOK) {
+						flags &= ~(SIGNOK | DPTOK);
+						goto fok;
+					}
+					break;
+				case 'e': case 'E':
+					/* no exponent without some digits */
+					if ((flags&(NDIGITS|EXPOK)) == EXPOK) {
+						flags =
+						    (flags & ~(EXPOK|DPTOK)) |
+						    SIGNOK | NDIGITS;
+						goto fok;
+					}
+					break;
+				}
+				break;
+		fok:
+				*p++ = c;
+				if (--fp->_r > 0)
+					fp->_p++;
+				else if (__srefill(fp))
+					break;	/* EOF */
+			}
+			/*
+			 * If no digits, might be missing exponent digits
+			 * (just give back the exponent) or might be missing
+			 * regular digits, but had sign and/or decimal point.
+			 */
+			if (flags & NDIGITS) {
+				if (flags & EXPOK) {
+					/* no digits at all */
+					while (p > buf)
+						ungetc(*(u_char *)--p, fp);
+					goto match_failure;
+				}
+				/* just a bad exponent (e and maybe sign) */
+				c = *(u_char *)--p;
+				if (c != 'e' && c != 'E') {
+					(void) ungetc(c, fp);/* sign */
+					c = *(u_char *)--p;
+				}
+				(void) ungetc(c, fp);
+			}
+			if ((flags & SUPPRESS) == 0) {
+				double res;
+
+				*p = 0;
+				res = strtod(buf,(char **) NULL);
+				if (flags & LONG)
+					*va_arg(ap, double *) = res;
+				else
+					*va_arg(ap, float *) = res;
+				nassigned++;
+			}
+			nread += p - buf;
+			break;
+#endif /* FLOATING_POINT */
+		}
+	}
+input_failure:
+	return (nassigned ? nassigned : -1);
+match_failure:
+	return (nassigned);
+}
+
+/*
+ * Fill in the given table from the scanset at the given format
+ * (just after `[').  Return a pointer to the character past the
+ * closing `]'.  The table has a 1 wherever characters should be
+ * considered part of the scanset.
+ */
+static u_char *
+__sccl(tab, fmt)
+	register char *tab;
+	register u_char *fmt;
+{
+	register int c, n, v;
+
+	/* first `clear' the whole table */
+	c = *fmt++;		/* first char hat => negated scanset */
+	if (c == '^') {
+		v = 1;		/* default => accept */
+		c = *fmt++;	/* get new first char */
+	} else
+		v = 0;		/* default => reject */
+	/* should probably use memset here */
+	for (n = 0; n < 256; n++)
+		tab[n] = v;
+	if (c == 0)
+		return (fmt - 1);/* format ended before closing ] */
+
+	/*
+	 * Now set the entries corresponding to the actual scanset
+	 * to the opposite of the above.
+	 *
+	 * The first character may be ']' (or '-') without being special;
+	 * the last character may be '-'.
+	 */
+	v = 1 - v;
+	for (;;) {
+		tab[c] = v;		/* take character c */
+doswitch:
+		n = *fmt++;		/* and examine the next */
+		switch (n) {
+
+		case 0:			/* format ended too soon */
+			return (fmt - 1);
+
+		case '-':
+			/*
+			 * A scanset of the form
+			 *	[01+-]
+			 * is defined as `the digit 0, the digit 1,
+			 * the character +, the character -', but
+			 * the effect of a scanset such as
+			 *	[a-zA-Z0-9]
+			 * is implementation defined.  The V7 Unix
+			 * scanf treats `a-z' as `the letters a through
+			 * z', but treats `a-a' as `the letter a, the
+			 * character -, and the letter a'.
+			 *
+			 * For compatibility, the `-' is not considerd
+			 * to define a range if the character following
+			 * it is either a close bracket (required by ANSI)
+			 * or is not numerically greater than the character
+			 * we just stored in the table (c).
+			 */
+			n = *fmt;
+			if (n == ']' || n < c) {
+				c = '-';
+				break;	/* resume the for(;;) */
+			}
+			fmt++;
+			do {		/* fill in the range */
+				tab[++c] = v;
+			} while (c < n);
+#if 1	/* XXX another disgusting compatibility hack */
+			/*
+			 * Alas, the V7 Unix scanf also treats formats
+			 * such as [a-c-e] as `the letters a through e'.
+			 * This too is permitted by the standard....
+			 */
+			goto doswitch;
+#else
+			c = *fmt++;
+			if (c == 0)
+				return (fmt - 1);
+			if (c == ']')
+				return (fmt);
+#endif
+			break;
+
+		case ']':		/* end of scanset */
+			return (fmt);
+
+		default:		/* just another character */
+			c = n;
+			break;
+		}
+	}
+	/* NOTREACHED */
+}
diff --git a/lib/libc/stdio/vprintf.c b/lib/libc/stdio/vprintf.c
new file mode 100644
index 0000000..f8184bb
--- /dev/null
+++ b/lib/libc/stdio/vprintf.c
@@ -0,0 +1,48 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)vprintf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+vprintf(fmt, ap)
+	char const *fmt;
+	_BSD_VA_LIST_ ap;
+{
+	return (vfprintf(stdout, fmt, ap));
+}
diff --git a/lib/libc/stdio/vscanf.c b/lib/libc/stdio/vscanf.c
new file mode 100644
index 0000000..5d12865
--- /dev/null
+++ b/lib/libc/stdio/vscanf.c
@@ -0,0 +1,49 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Donn Seeley at UUNET Technologies, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)vscanf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+vscanf(fmt, ap)
+	const char *fmt;
+	_BSD_VA_LIST_ ap;
+{
+
+	return (__svfscanf(stdin, fmt, ap));
+}
diff --git a/lib/libc/stdio/vsnprintf.c b/lib/libc/stdio/vsnprintf.c
new file mode 100644
index 0000000..ccc8af6
--- /dev/null
+++ b/lib/libc/stdio/vsnprintf.c
@@ -0,0 +1,60 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)vsnprintf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+
+vsnprintf(str, n, fmt, ap)
+	char *str;
+	size_t n;
+	const char *fmt;
+	_BSD_VA_LIST_ ap;
+{
+	int ret;
+	FILE f;
+
+	if ((int)n < 1)
+		return (EOF);
+	f._flags = __SWR | __SSTR;
+	f._bf._base = f._p = (unsigned char *)str;
+	f._bf._size = f._w = n - 1;
+	ret = vfprintf(&f, fmt, ap);
+	*f._p = 0;
+	return (ret);
+}
diff --git a/lib/libc/stdio/vsprintf.c b/lib/libc/stdio/vsprintf.c
new file mode 100644
index 0000000..c6e192a
--- /dev/null
+++ b/lib/libc/stdio/vsprintf.c
@@ -0,0 +1,58 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)vsprintf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <limits.h>
+
+vsprintf(str, fmt, ap)
+	char *str;
+	const char *fmt;
+	_BSD_VA_LIST_ ap;
+{
+	int ret;
+	FILE f;
+
+	f._flags = __SWR | __SSTR;
+	f._bf._base = f._p = (unsigned char *)str;
+	f._bf._size = f._w = INT_MAX;
+	ret = vfprintf(&f, fmt, ap);
+	*f._p = 0;
+	return (ret);
+}
diff --git a/lib/libc/stdio/vsscanf.c b/lib/libc/stdio/vsscanf.c
new file mode 100644
index 0000000..e776689
--- /dev/null
+++ b/lib/libc/stdio/vsscanf.c
@@ -0,0 +1,69 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Donn Seeley at UUNET Technologies, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)vsscanf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <string.h>
+
+/* ARGSUSED */
+static int
+eofread(cookie, buf, len)
+	void *cookie;
+	char *buf;
+	int len;
+{
+
+	return (0);
+}
+
+vsscanf(str, fmt, ap)
+	const char *str;
+	const char *fmt;
+	_BSD_VA_LIST_ ap;
+{
+	FILE f;
+
+	f._flags = __SRD;
+	f._bf._base = f._p = (unsigned char *)str;
+	f._bf._size = f._r = strlen(str);
+	f._read = eofread;
+	f._ub._base = NULL;
+	f._lb._base = NULL;
+	return (__svfscanf(&f, fmt, ap));
+}
diff --git a/lib/libc/stdio/wbuf.c b/lib/libc/stdio/wbuf.c
new file mode 100644
index 0000000..36d7c8d
--- /dev/null
+++ b/lib/libc/stdio/wbuf.c
@@ -0,0 +1,88 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)wbuf.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include "local.h"
+
+/*
+ * Write the given character into the (probably full) buffer for
+ * the given file.  Flush the buffer out if it is or becomes full,
+ * or if c=='\n' and the file is line buffered.
+ */
+__swbuf(c, fp)
+	register int c;
+	register FILE *fp;
+{
+	register int n;
+
+	/*
+	 * In case we cannot write, or longjmp takes us out early,
+	 * make sure _w is 0 (if fully- or un-buffered) or -_bf._size
+	 * (if line buffered) so that we will get called again.
+	 * If we did not do this, a sufficient number of putc()
+	 * calls might wrap _w from negative to positive.
+	 */
+	fp->_w = fp->_lbfsize;
+	if (cantwrite(fp))
+		return (EOF);
+	c = (unsigned char)c;
+
+	/*
+	 * If it is completely full, flush it out.  Then, in any case,
+	 * stuff c into the buffer.  If this causes the buffer to fill
+	 * completely, or if c is '\n' and the file is line buffered,
+	 * flush it (perhaps a second time).  The second flush will always
+	 * happen on unbuffered streams, where _bf._size==1; fflush()
+	 * guarantees that putc() will always call wbuf() by setting _w
+	 * to 0, so we need not do anything else.
+	 */
+	n = fp->_p - fp->_bf._base;
+	if (n >= fp->_bf._size) {
+		if (fflush(fp))
+			return (EOF);
+		n = 0;
+	}
+	fp->_w--;
+	*fp->_p++ = c;
+	if (++n == fp->_bf._size || (fp->_flags & __SLBF && c == '\n'))
+		if (fflush(fp))
+			return (EOF);
+	return (c);
+}
diff --git a/lib/libc/stdio/wsetup.c b/lib/libc/stdio/wsetup.c
new file mode 100644
index 0000000..1215edc
--- /dev/null
+++ b/lib/libc/stdio/wsetup.c
@@ -0,0 +1,90 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)wsetup.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "local.h"
+
+/*
+ * Various output routines call wsetup to be sure it is safe to write,
+ * because either _flags does not include __SWR, or _buf is NULL.
+ * _wsetup returns 0 if OK to write, nonzero otherwise.
+ */
+__swsetup(fp)
+	register FILE *fp;
+{
+	/* make sure stdio is set up */
+	if (!__sdidinit)
+		__sinit();
+
+	/*
+	 * If we are not writing, we had better be reading and writing.
+	 */
+	if ((fp->_flags & __SWR) == 0) {
+		if ((fp->_flags & __SRW) == 0)
+			return (EOF);
+		if (fp->_flags & __SRD) {
+			/* clobber any ungetc data */
+			if (HASUB(fp))
+				FREEUB(fp);
+			fp->_flags &= ~(__SRD|__SEOF);
+			fp->_r = 0;
+			fp->_p = fp->_bf._base;
+		}
+		fp->_flags |= __SWR;
+	}
+
+	/*
+	 * Make a buffer if necessary, then set _w.
+	 */
+	if (fp->_bf._base == NULL)
+		__smakebuf(fp);
+	if (fp->_flags & __SLBF) {
+		/*
+		 * It is line buffered, so make _lbfsize be -_bufsize
+		 * for the putc() macro.  We will change _lbfsize back
+		 * to 0 whenever we turn off __SWR.
+		 */
+		fp->_w = 0;
+		fp->_lbfsize = -fp->_bf._size;
+	} else
+		fp->_w = fp->_flags & __SNBF ? 0 : fp->_bf._size;
+	return (0);
+}
diff --git a/lib/libc/stdlib/Makefile.inc b/lib/libc/stdlib/Makefile.inc
new file mode 100644
index 0000000..81e8ed0
--- /dev/null
+++ b/lib/libc/stdlib/Makefile.inc
@@ -0,0 +1,30 @@
+#	@(#)Makefile.inc	8.2 (Berkeley) 2/16/94
+
+# machine-independent stdlib sources
+.PATH: ${.CURDIR}/${MACHINE}/stdlib ${.CURDIR}/stdlib
+
+SRCS+=	abort.c atexit.c atof.c atoi.c atol.c bsearch.c calloc.c div.c \
+	exit.c getenv.c getopt.c getsubopt.c strhash.c heapsort.c labs.c \
+	ldiv.c malloc.c merge.c putenv.c qsort.c radixsort.c rand.c random.c \
+	realpath.c setenv.c strtod.c strtol.c strtoq.c strtoul.c \
+	strtouq.c system.c
+
+# machine-dependent stdlib sources
+.include "${.CURDIR}/${MACHINE}/stdlib/Makefile.inc"
+
+MAN3+=	stdlib/abort.3 stdlib/abs.3 stdlib/alloca.3 stdlib/atexit.3 \
+	stdlib/atof.3 stdlib/atoi.3 stdlib/atol.3 stdlib/bsearch.3 \
+	stdlib/calloc.3 stdlib/div.3 stdlib/exit.3 \
+	stdlib/getenv.3 stdlib/getopt.3 stdlib/getsubopt.3 stdlib/labs.3 \
+	stdlib/ldiv.3 stdlib/malloc.3 stdlib/memory.3 stdlib/qsort.3 \
+	stdlib/radixsort.3 stdlib/rand.3 stdlib/random.3 \
+	stdlib/realpath.3 stdlib/strtod.3 stdlib/strtol.3 stdlib/strtoul.3 \
+	stdlib/system.3
+
+MLINKS+=getenv.3 setenv.3 getenv.3 unsetenv.3 getenv.3 putenv.3
+MLINKS+=qsort.3 heapsort.3 qsort.3 mergesort.3
+MLINKS+=rand.3 srand.3
+MLINKS+=random.3 initstate.3 random.3 setstate.3 random.3 srandom.3
+MLINKS+=strtol.3 strtoq.3
+MLINKS+=strtoul.3 strtouq.3
+MLINKS+=malloc.3 free.3 malloc.3 realloc.3
diff --git a/lib/libc/stdlib/abort.3 b/lib/libc/stdlib/abort.3
new file mode 100644
index 0000000..83b4e04
--- /dev/null
+++ b/lib/libc/stdlib/abort.3
@@ -0,0 +1,70 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)abort.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ABORT 3
+.Os
+.Sh NAME
+.Nm abort
+.Nd cause abnormal program termination
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft void
+.Fn abort void
+.Sh DESCRIPTION
+The
+.Fn abort
+function causes abnormal program termination to occur, unless the
+signal
+.Dv SIGABRT
+is being caught and the signal handler does not return.
+.Pp
+No open streams are closed or flushed.
+.Sh RETURN VALUES
+The
+.Nm abort
+function
+never returns.
+.Sh SEE ALSO
+.Xr sigaction 2 ,
+.Xr exit 2
+.Sh STANDARDS
+The
+.Fn abort
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/stdlib/abort.c b/lib/libc/stdlib/abort.c
new file mode 100644
index 0000000..690bdf5
--- /dev/null
+++ b/lib/libc/stdlib/abort.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 1985, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)abort.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <signal.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <unistd.h>
+
+void
+abort()
+{
+	sigset_t mask;
+
+	sigfillset(&mask);
+	/*
+	 * don't block SIGABRT to give any handler a chance; we ignore
+	 * any errors -- X311J doesn't allow abort to return anyway.
+	 */
+	sigdelset(&mask, SIGABRT);
+	(void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
+	(void)kill(getpid(), SIGABRT);
+
+	/*
+	 * if SIGABRT ignored, or caught and the handler returns, do
+	 * it again, only harder.
+	 */
+	(void)signal(SIGABRT, SIG_DFL);
+	(void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
+	(void)kill(getpid(), SIGABRT);
+	exit(1);
+}
diff --git a/lib/libc/stdlib/abs.3 b/lib/libc/stdlib/abs.3
new file mode 100644
index 0000000..e12f798
--- /dev/null
+++ b/lib/libc/stdlib/abs.3
@@ -0,0 +1,73 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)abs.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ABS 3
+.Os
+.Sh NAME
+.Nm abs
+.Nd integer absolute value function
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft int
+.Fn abs "int j"
+.Sh DESCRIPTION
+The
+.Fn abs
+function
+computes
+the absolute value of the integer
+.Ar j .
+.Sh RETURN VALUES
+The
+.Fn abs
+function
+returns
+the absolute value.
+.Sh SEE ALSO
+.Xr floor 3 ,
+.Xr labs 3
+.Xr cabs 3
+.Xr hypot 3
+.Xr math 3
+.Sh STANDARDS
+The
+.Fn abs
+function conforms to
+.St -ansiC .
+.Sh BUGS
+The absolute value of the most negative integer remains negative.
diff --git a/lib/libc/stdlib/abs.c b/lib/libc/stdlib/abs.c
new file mode 100644
index 0000000..013fe53
--- /dev/null
+++ b/lib/libc/stdlib/abs.c
@@ -0,0 +1,45 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)abs.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdlib.h>
+
+int
+abs(j)
+	int j;
+{
+	return(j < 0 ? -j : j);
+}
diff --git a/lib/libc/stdlib/alloca.3 b/lib/libc/stdlib/alloca.3
new file mode 100644
index 0000000..ad5aaf69
--- /dev/null
+++ b/lib/libc/stdlib/alloca.3
@@ -0,0 +1,78 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)alloca.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ALLOCA 3
+.Os BSD 4
+.Sh NAME
+.Nm alloca
+.Nd memory allocator
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft void *
+.Fn alloca "size_t size"
+.Sh DESCRIPTION
+The
+.Fn alloca
+function
+allocates 
+.Fa size
+bytes of space in the stack frame of the caller.
+This temporary space is automatically freed on
+return.
+.Sh RETURN VALUES
+The
+.Fn alloca
+function returns a pointer to the beginning of the allocated space.
+If the allocation failed, a
+.Dv NULL
+pointer is returned.
+.Sh SEE ALSO
+.Xr brk 2 ,
+.Xr pagesize 2
+.Xr calloc 3 ,
+.Xr malloc 3 ,
+.Xr realloc 3 ,
+.Sh BUGS
+The
+.Fn alloca
+function
+is machine dependent; its use is discouraged.
+.\" .Sh HISTORY
+.\" The
+.\" .Fn alloca
+.\" function appeared in
+.\" .Bx ?? .
+.\" The function appeared in 32v, pwb and pwb.2 and in 3bsd 4bsd 
+.\" The first man page (or link to a man page that I can find at the
+.\" moment is 4.3...
diff --git a/lib/libc/stdlib/atexit.3 b/lib/libc/stdlib/atexit.3
new file mode 100644
index 0000000..d50d57c
--- /dev/null
+++ b/lib/libc/stdlib/atexit.3
@@ -0,0 +1,77 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)atexit.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ATEXIT 3
+.Os
+.Sh NAME
+.Nm atexit
+.Nd register a function to be called on exit
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft int
+.Fn atexit "void (*function)(void)"
+.Sh DESCRIPTION
+The
+.Fn atexit
+function
+registers the given
+.Ar function
+to be called at program exit, whether via
+.Xr exit 3
+or via return from the program's
+.Em main .
+Functions so registered are called in reverse order;
+no arguments are passed.
+At least 32 functions can always be registered,
+and more are allowed as long as sufficient memory can be allocated.
+.Sh RETURN VALUES
+.Rv -std atexit
+.Sh ERRORS
+.Bl -tag -width [ENOMEM]
+.It Bq Er ENOMEM
+No memory was available to add the function to the list.
+The existing list of functions is unmodified.
+.El
+.Sh SEE ALSO
+.Xr exit 3
+.Sh STANDARDS
+The
+.Fn atexit
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/stdlib/atexit.c b/lib/libc/stdlib/atexit.c
new file mode 100644
index 0000000..9c4caed
--- /dev/null
+++ b/lib/libc/stdlib/atexit.c
@@ -0,0 +1,66 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)atexit.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include "atexit.h"
+
+/*
+ * Register a function to be performed at exit.
+ */
+int
+atexit(fn)
+	void (*fn)();
+{
+	static struct atexit __atexit0;	/* one guaranteed table */
+	register struct atexit *p;
+
+	if ((p = __atexit) == NULL)
+		__atexit = p = &__atexit0;
+	else if (p->ind >= ATEXIT_SIZE) {
+		if ((p = malloc(sizeof(*p))) == NULL)
+			return (-1);
+		p->ind = 0;
+		p->next = __atexit;
+		__atexit = p;
+	}
+	p->fns[p->ind++] = fn;
+	return (0);
+}
diff --git a/lib/libc/stdlib/atexit.h b/lib/libc/stdlib/atexit.h
new file mode 100644
index 0000000..3067e8d
--- /dev/null
+++ b/lib/libc/stdlib/atexit.h
@@ -0,0 +1,45 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)atexit.h	8.1 (Berkeley) 6/4/93
+ */
+
+/* must be at least 32 to guarantee ANSI conformance */
+#define	ATEXIT_SIZE	32
+
+struct atexit {
+	struct atexit *next;		/* next in list */
+	int ind;			/* next index in this table */
+	void (*fns[ATEXIT_SIZE])();	/* the table itself */
+};
+
+struct atexit *__atexit;	/* points to head of LIFO stack */
diff --git a/lib/libc/stdlib/atof.3 b/lib/libc/stdlib/atof.3
new file mode 100644
index 0000000..978d3f4
--- /dev/null
+++ b/lib/libc/stdlib/atof.3
@@ -0,0 +1,87 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)atof.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ATOF 3
+.Os
+.Sh NAME
+.Nm atof
+.Nd convert
+.Tn ASCII
+string to double
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft double
+.Fn atof "const char *nptr"
+.Sh DESCRIPTION
+The
+.Fn atof
+function converts the initial portion of the string pointed to by
+.Ar nptr
+to
+.Ar double
+representation.
+.Pp
+It is equivalent to:
+.Bd -literal -offset indent
+strtod(nptr, (char **)NULL);
+.Ed
+.Sh SEE ALSO
+.Xr atoi 3 ,
+.Xr atol 3 ,
+.Xr strtod 3 ,
+.Xr strtol 3 ,
+.Xr strtoul 3
+.Sh STANDARDS
+The
+.Fn atof
+function conforms to
+.St -ansiC .
+.Sh BUGS
+This manual page represents intent instead of actual practice.
+While it is intended that
+.Fn atof
+be implemented using
+.Xr strtod 3 ,
+this has not yet happened.
+In the current system,
+.Fn atof
+translates a string in the following form to a double: a string of
+leading white space, possibly followed by a sign (``+'' or ``-''),
+followed by a digit string which may contain one decimal point (``.''),
+which may be followed by either of the exponent flags (``E'' or ``e''),
+and lastly, followed by a signed or unsigned integer.
diff --git a/lib/libc/stdlib/atof.c b/lib/libc/stdlib/atof.c
new file mode 100644
index 0000000..130e285
--- /dev/null
+++ b/lib/libc/stdlib/atof.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)atof.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdlib.h>
+#include <stddef.h>
+
+double
+atof(ascii)
+	const char *ascii;
+{
+	return (strtod(ascii, NULL));
+}
diff --git a/lib/libc/stdlib/atoi.3 b/lib/libc/stdlib/atoi.3
new file mode 100644
index 0000000..a39779f
--- /dev/null
+++ b/lib/libc/stdlib/atoi.3
@@ -0,0 +1,73 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)atoi.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ATOI 3
+.Os
+.Sh NAME
+.Nm atoi
+.Nd convert
+.Tn ASCII
+string to integer
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft int
+.Fn atoi "const char *nptr"
+.Sh DESCRIPTION
+The
+.Fn atoi
+function converts the initial portion of the string pointed to by
+.Em nptr
+to
+.Em integer
+representation.
+.Pp
+It is equivalent to:
+.Bd -literal -offset indent
+(int)strtol(nptr, (char **)NULL, 10);
+.Ed
+.Sh SEE ALSO
+.Xr atof 3 ,
+.Xr atol 3 ,
+.Xr strtod 3 ,
+.Xr strtol 3 ,
+.Xr strtoul 3
+.Sh STANDARDS
+The
+.Fn atoi
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/stdlib/atoi.c b/lib/libc/stdlib/atoi.c
new file mode 100644
index 0000000..a13c0e2
--- /dev/null
+++ b/lib/libc/stdlib/atoi.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)atoi.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdlib.h>
+#include <stddef.h>
+
+atoi(str)
+	const char *str;
+{
+	return((int)strtol(str, (char **)NULL, 10));
+}
diff --git a/lib/libc/stdlib/atol.3 b/lib/libc/stdlib/atol.3
new file mode 100644
index 0000000..6b12cc9
--- /dev/null
+++ b/lib/libc/stdlib/atol.3
@@ -0,0 +1,74 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)atol.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ATOL 3
+.Os
+.Sh NAME
+.Nm atol
+.Nd convert
+.Tn ASCII
+string to long integer
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft long
+.Fn atol "const char *nptr"
+.Sh DESCRIPTION
+The
+.Fn atol
+function converts the initial portion of the string pointed to by
+.Ar nptr
+to
+.Em long integer
+representation.
+.Pp
+It is equivalent to:
+.Bd -literal -offset indent
+strtol(nptr, (char **)NULL, 10);
+.Ed
+.Sh SEE ALSO
+.Xr atof 3 ,
+.Xr atoi 3 ,
+.Xr strtod 3 ,
+.Xr strtol 3 ,
+.Xr strtoul 3
+.Sh STANDARDS
+The
+.Fn atol
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/stdlib/atol.c b/lib/libc/stdlib/atol.c
new file mode 100644
index 0000000..31bcaa6
--- /dev/null
+++ b/lib/libc/stdlib/atol.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)atol.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stddef.h>
+#include <stdlib.h>
+
+long
+atol(str)
+	const char *str;
+{
+	return(strtol(str, (char **)NULL, 10));
+}
diff --git a/lib/libc/stdlib/bsearch.3 b/lib/libc/stdlib/bsearch.3
new file mode 100644
index 0000000..e4cf49f
--- /dev/null
+++ b/lib/libc/stdlib/bsearch.3
@@ -0,0 +1,90 @@
+.\" Copyright (c) 1990, 1991, 1993, 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)bsearch.3	8.3 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt BSEARCH 3
+.Os
+.Sh NAME
+.Nm bsearch
+.Nd binary search of a sorted table
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft void *
+.Fn bsearch "const void *key" "const void *base" "size_t nmemb" "size_t size" "int (*compar) (const void *, const void *)"
+.Sh DESCRIPTION
+The
+.Fn bsearch
+function searches an array of
+.Fa nmemb
+objects, the initial member of which is 
+pointed to by
+.Fa base ,
+for a member that matches the object pointed to by
+.Fa key .
+The size of each member of the array is specified by 
+.Fa size .
+.Pp
+The contents of the array should be in ascending sorted order according
+to the comparison function referenced by
+.Fa compar .
+The
+.Fa compar
+routine
+is expected to have
+two arguments which point to the
+.Fa key
+object and to an array member, in that order, and should return an integer
+less than, equal to, or greater than zero if the
+.Fa key
+object is found, respectively, to be less than, to match, or be
+greater than the array member.
+.Sh RETURN VALUES
+The
+.Fn bsearch
+function returns a pointer to a matching member of the array, or a null
+pointer if no match is found.
+If two members compare as equal, which member is matched is unspecified.
+.Sh SEE ALSO
+.Xr db 3 ,
+.Xr lsearch 3 ,
+.Xr qsort 3 ,
+.\" .Xr tsearch 3
+.Sh STANDARDS
+The
+.Fn bsearch
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/stdlib/bsearch.c b/lib/libc/stdlib/bsearch.c
new file mode 100644
index 0000000..4cee9de
--- /dev/null
+++ b/lib/libc/stdlib/bsearch.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bsearch.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stddef.h>
+#include <stdlib.h>
+
+/*
+ * Perform a binary search.
+ *
+ * The code below is a bit sneaky.  After a comparison fails, we
+ * divide the work in half by moving either left or right. If lim
+ * is odd, moving left simply involves halving lim: e.g., when lim
+ * is 5 we look at item 2, so we change lim to 2 so that we will
+ * look at items 0 & 1.  If lim is even, the same applies.  If lim
+ * is odd, moving right again involes halving lim, this time moving
+ * the base up one item past p: e.g., when lim is 5 we change base
+ * to item 3 and make lim 2 so that we will look at items 3 and 4.
+ * If lim is even, however, we have to shrink it by one before
+ * halving: e.g., when lim is 4, we still looked at item 2, so we
+ * have to make lim 3, then halve, obtaining 1, so that we will only
+ * look at item 3.
+ */
+void *
+bsearch(key, base0, nmemb, size, compar)
+	register const void *key;
+	const void *base0;
+	size_t nmemb;
+	register size_t size;
+	register int (*compar) __P((const void *, const void *));
+{
+	register const char *base = base0;
+	register size_t lim;
+	register int cmp;
+	register const void *p;
+
+	for (lim = nmemb; lim != 0; lim >>= 1) {
+		p = base + (lim >> 1) * size;
+		cmp = (*compar)(key, p);
+		if (cmp == 0)
+			return ((void *)p);
+		if (cmp > 0) {	/* key > p: move right */
+			base = (char *)p + size;
+			lim--;
+		}		/* else move left */
+	}
+	return (NULL);
+}
diff --git a/lib/libc/stdlib/calloc.3 b/lib/libc/stdlib/calloc.3
new file mode 100644
index 0000000..0ca15e5
--- /dev/null
+++ b/lib/libc/stdlib/calloc.3
@@ -0,0 +1,70 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)calloc.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt CALLOC 3
+.Os
+.Sh NAME
+.Nm calloc
+.Nd allocate clean memory (zero initialized space)
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft void *
+.Fn calloc "size_t nmemb" "size_t size"
+.Sh DESCRIPTION
+The
+.Fn calloc
+function allocates space for an array of 
+.Fa nmemb
+objects, each of whose size is
+.Fa size .
+The space is initialized to all bits zero.
+.Sh RETURN VALUES
+The
+.Fn calloc
+function returns
+a pointer to the
+the allocated space if successful; otherwise a null pointer is returned.
+.Sh SEE ALSO
+.Xr malloc 3 ,
+.Xr realloc 3 ,
+.Xr free 3 ,
+.Sh STANDARDS
+The
+.Fn calloc
+function conforms to
+.St -ansiC .
diff --git a/lib/libc/stdlib/calloc.c b/lib/libc/stdlib/calloc.c
new file mode 100644
index 0000000..d7c8e07
--- /dev/null
+++ b/lib/libc/stdlib/calloc.c
@@ -0,0 +1,52 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)calloc.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdlib.h>
+#include <string.h>
+
+void *
+calloc(num, size)
+	size_t num;
+	register size_t size;
+{
+	register void *p;
+
+	size *= num;
+	if (p = malloc(size))
+		bzero(p, size);
+	return(p);
+}
diff --git a/lib/libc/stdlib/div.3 b/lib/libc/stdlib/div.3
new file mode 100644
index 0000000..f09e818
--- /dev/null
+++ b/lib/libc/stdlib/div.3
@@ -0,0 +1,67 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek.
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)div.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt DIV 3
+.Os
+.Sh NAME
+.Nm div
+.Nd return quotient and remainder from division
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft div_t
+.Fn div "int num" "int denom"
+.Sh DESCRIPTION
+The
+.Fn div
+function
+computes the value
+.Fa num/denom
+and returns the quotient and remainder in a structure named
+.Fa div_t
+that contains two
+.Em int
+members named
+.Fa quot
+and
+.Fa rem .
+.Sh SEE ALSO
+.Xr ldiv 3
+.Sh STANDARDS
+The
+.Fn div
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/stdlib/div.c b/lib/libc/stdlib/div.c
new file mode 100644
index 0000000..d7bde163
--- /dev/null
+++ b/lib/libc/stdlib/div.c
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)div.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdlib.h>		/* div_t */
+
+div_t
+div(num, denom)
+	int num, denom;
+{
+	div_t r;
+
+	r.quot = num / denom;
+	r.rem = num % denom;
+	/*
+	 * The ANSI standard says that |r.quot| <= |n/d|, where
+	 * n/d is to be computed in infinite precision.  In other
+	 * words, we should always truncate the quotient towards
+	 * 0, never -infinity.
+	 *
+	 * Machine division and remainer may work either way when
+	 * one or both of n or d is negative.  If only one is
+	 * negative and r.quot has been truncated towards -inf,
+	 * r.rem will have the same sign as denom and the opposite
+	 * sign of num; if both are negative and r.quot has been
+	 * truncated towards -inf, r.rem will be positive (will
+	 * have the opposite sign of num).  These are considered
+	 * `wrong'.
+	 *
+	 * If both are num and denom are positive, r will always
+	 * be positive.
+	 *
+	 * This all boils down to:
+	 *	if num >= 0, but r.rem < 0, we got the wrong answer.
+	 * In that case, to get the right answer, add 1 to r.quot and
+	 * subtract denom from r.rem.
+	 */
+	if (num >= 0 && r.rem < 0) {
+		r.quot++;
+		r.rem -= denom;
+	}
+	return (r);
+}
diff --git a/lib/libc/stdlib/exit.3 b/lib/libc/stdlib/exit.3
new file mode 100644
index 0000000..43ee3c0
--- /dev/null
+++ b/lib/libc/stdlib/exit.3
@@ -0,0 +1,83 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)exit.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt EXIT 3
+.Os
+.Sh NAME
+.Nm exit
+.Nd perform normal program termination
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft void
+.Fn exit "int status"
+.Sh DESCRIPTION
+.Fn Exit
+terminates a process.
+.Pp
+Before termination it performs the following functions in the
+order listed:
+.Bl -enum -offset indent
+.It
+Call the functions registered with the
+.Xr atexit 3
+function, in the reverse order of their registration.
+.It
+Flush all open output streams.
+.It
+Close all open streams.
+.It
+Unlink all files created with the
+.Xr tmpfile 3
+function.
+.El
+.Sh RETURN VALUES
+The
+.Fn exit
+function
+never returns.
+.Sh SEE ALSO
+.Xr _exit 2 ,
+.Xr atexit 3 ,
+.Xr intro 3 ,
+.Xr tmpfile 3
+.Sh STANDARDS
+The
+.Fn exit
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/stdlib/exit.c b/lib/libc/stdlib/exit.c
new file mode 100644
index 0000000..a8f6e24
--- /dev/null
+++ b/lib/libc/stdlib/exit.c
@@ -0,0 +1,60 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)exit.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdlib.h>
+#include <unistd.h>
+#include "atexit.h"
+
+void (*__cleanup)();
+
+/*
+ * Exit, flushing stdio buffers if necessary.
+ */
+void
+exit(status)
+	int status;
+{
+	register struct atexit *p;
+	register int n;
+
+	for (p = __atexit; p; p = p->next)
+		for (n = p->ind; --n >= 0;)
+			(*p->fns[n])();
+	if (__cleanup)
+		(*__cleanup)();
+	_exit(status);
+}
diff --git a/lib/libc/stdlib/getenv.3 b/lib/libc/stdlib/getenv.3
new file mode 100644
index 0000000..f552d3d
--- /dev/null
+++ b/lib/libc/stdlib/getenv.3
@@ -0,0 +1,151 @@
+.\" Copyright (c) 1988, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getenv.3	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt GETENV 3
+.Os
+.Sh NAME
+.Nm getenv ,
+.Nm putenv ,
+.Nm setenv ,
+.Nm unsetenv
+.Nd environment variable functions
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft char *
+.Fn getenv "const char *name"
+.Ft int
+.Fn setenv "const char *name" "const char *value" "int overwrite"
+.Ft int
+.Fn putenv "const char *string"
+.Ft void
+.Fn unsetenv "const char *name"
+.Sh DESCRIPTION
+These functions set, unset and fetch environment variables from the
+host
+.Em environment list .
+For compatibility with differing environment conventions,
+the given arguments
+.Ar name
+and
+.Ar value
+may be appended and prepended, 
+respectively,
+with an equal sign
+.Dq Li \&= .
+.Pp
+The
+.Fn getenv
+function obtains the current value of the environment variable,
+.Ar name .
+If the variable
+.Ar name
+is not in the current environment,
+a null pointer is returned.
+.Pp
+The
+.Fn setenv
+function inserts or resets the environment variable
+.Ar name
+in the current environment list.
+If the variable
+.Ar name
+does not exist in the list,
+it is inserted with the given
+.Ar value.
+If the variable does exist, the argument
+.Ar overwrite
+is tested; if
+.Ar overwrite is
+zero, the
+variable is not reset, otherwise it is reset
+to the given
+.Ar value .
+.Pp
+The
+.Fn putenv
+function takes an argument of the form ``name=value'' and is
+equivalent to:
+.Bd -literal -offset indent
+setenv(name, value, 1);
+.Ed
+.Pp
+The
+.Fn unsetenv
+function
+deletes all instances of the variable name pointed to by
+.Fa name
+from the list.
+.Sh RETURN VALUES
+The functions
+.Fn setenv
+and
+.Fn putenv
+return zero if successful; otherwise the global variable
+.Va errno
+is set to indicate the error and a
+\-1 is returned.
+.Sh ERRORS
+.Bl -tag -width [ENOMEM]
+.It Bq Er ENOMEM
+The function
+.Fn setenv
+or
+.Fn putenv
+failed because they were unable to allocate memory for the environment.
+.El
+.Sh SEE ALSO
+.Xr csh 1 ,
+.Xr sh 1 ,
+.Xr execve 2 ,
+.Xr environ 7
+.Sh STANDARDS
+The
+.Fn getenv
+function conforms to
+.St -ansiC .
+.Sh HISTORY
+The functions
+.Fn setenv
+and
+.Fn unsetenv
+appeared in
+.At v7 .
+The
+.Fn putenv
+function appeared in
+.Bx 4.3 Reno .
diff --git a/lib/libc/stdlib/getenv.c b/lib/libc/stdlib/getenv.c
new file mode 100644
index 0000000..a6bbd35
--- /dev/null
+++ b/lib/libc/stdlib/getenv.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 1987, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getenv.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+
+inline char *__findenv __P((const char *, int *));
+
+/*
+ * __findenv --
+ *	Returns pointer to value associated with name, if any, else NULL.
+ *	Sets offset to be the offset of the name/value combination in the
+ *	environmental array, for use by setenv(3) and unsetenv(3).
+ *	Explicitly removes '=' in argument name.
+ *
+ *	This routine *should* be a static; don't use it.
+ */
+inline char *
+__findenv(name, offset)
+	register const char *name;
+	int *offset;
+{
+	extern char **environ;
+	register int len, i;
+	register const char *np;
+	register char **p, *cp;
+
+	if (name == NULL || environ == NULL)
+		return (NULL);
+	for (np = name; *np && *np != '='; ++np)
+		continue;
+	len = np - name;
+	for (p = environ; (cp = *p) != NULL; ++p) {
+		for (np = name, i = len; i && *cp; i--)
+			if (*cp++ != *np++)
+				break;
+		if (i == 0 && *cp++ == '=') {
+			*offset = p - environ;
+			return (cp);
+		}
+	}
+	return (NULL);
+}
+
+/*
+ * getenv --
+ *	Returns ptr to value associated with name, if any, else NULL.
+ */
+char *
+getenv(name)
+	const char *name;
+{
+	int offset;
+
+	return (__findenv(name, &offset));
+}
diff --git a/lib/libc/stdlib/getopt.3 b/lib/libc/stdlib/getopt.3
new file mode 100644
index 0000000..95ff6e6
--- /dev/null
+++ b/lib/libc/stdlib/getopt.3
@@ -0,0 +1,252 @@
+.\" Copyright (c) 1988, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getopt.3	8.4 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt GETOPT 3
+.Os BSD 4.3
+.Sh NAME
+.Nm getopt
+.Nd get option character from command line argument list
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Vt extern char *optarg;
+.Vt extern int   optind;
+.Vt extern int   optopt;
+.Vt extern int   opterr;
+.Vt extern int   optreset;
+.Ft int
+.Fn getopt "int argc" "char * const *argv" "const char *optstring"
+.Sh DESCRIPTION
+The
+.Fn getopt
+function incrementally parses a command line argument list
+.Fa argv
+and returns the next
+.Em known
+option character.
+An option character is
+.Em known
+if it has been specified in the string of accepted option characters,
+.Fa optstring .
+.Pp
+The option string
+.Fa optstring
+may contain the following elements: individual characters, and
+characters followed by a colon to indicate an option argument
+is to follow.
+For example, an option string
+.Li "\&""x""
+recognizes an option
+.Dq Fl x ,
+and an option string
+.Li "\&""x:""
+recognizes an option and argument
+.Dq Fl x Ar argument .
+It does not matter to
+.Fn getopt
+if a following argument has leading white space.
+.Pp
+On return from
+.Fn getopt ,
+.Va optarg
+points to an option argument, if it is anticipated,
+and the variable
+.Va optind
+contains the index to the next
+.Fa argv
+argument for a subsequent call
+to
+.Fn getopt .
+The variable
+.Va optopt
+saves the last
+.Em known
+option character returned by
+.Fn getopt .
+.Pp
+The variable
+.Va opterr
+and
+.Va optind
+are both initialized to 1.
+The
+.Va optind
+variable may be set to another value before a set of calls to
+.Fn getopt
+in order to skip over more or less argv entries.
+.Pp
+In order to use
+.Fn getopt
+to evaluate multiple sets of arguments, or to evaluate a single set of
+arguments multiple times,
+the variable
+.Va optreset
+must be set to 1 before the second and each additional set of calls to
+.Fn getopt ,
+and the variable
+.Va optind
+must be reinitialized.
+.Pp
+The
+.Fn getopt
+function
+returns an
+.Dv EOF
+when the argument list is exhausted, or a non-recognized
+option is encountered.
+The interpretation of options in the argument list may be cancelled
+by the option
+.Ql --
+(double dash) which causes
+.Fn getopt
+to signal the end of argument processing and return an
+.Dv EOF . 
+When all options have been processed (i.e., up to the first non-option
+argument),
+.Fn getopt
+returns
+.Dv EOF .
+.Sh DIAGNOSTICS
+If the
+.Fn getopt
+function encounters a character not found in the string
+.Va optarg
+or detects
+a missing option argument it writes an error message and returns
+.Ql ?
+to the
+.Em stderr .
+Setting
+.Va opterr
+to a zero will disable these error messages.
+If
+.Va optstring 
+has a leading 
+.Ql \&:
+then a missing option argument causes a
+.Ql \&:
+to be returned in addition to suppressing any error messages.
+.Pp
+Option arguments are allowed to begin with
+.Dq Li \- ;
+this is reasonable but
+reduces the amount of error checking possible.
+.Sh EXTENSIONS
+The
+.Va optreset
+variable was added to make it possible to call the
+.Fn getopt
+function multiple times.
+This is an extension to the
+.St -p1003.2
+specification.
+.Sh EXAMPLE
+.Bd -literal -compact
+extern char *optarg;
+extern int optind;
+int bflag, ch, fd;
+
+bflag = 0;
+while ((ch = getopt(argc, argv, "bf:")) != EOF)
+	switch(ch) {
+	case 'b':
+		bflag = 1;
+		break;
+	case 'f':
+		if ((fd = open(optarg, O_RDONLY, 0)) < 0) {
+			(void)fprintf(stderr,
+			    "myname: %s: %s\en", optarg, strerror(errno));
+			exit(1);
+		}
+		break;
+	case '?':
+	default:
+		usage();
+}
+argc -= optind;
+argv += optind;
+.Ed
+.Sh HISTORY
+The
+.Fn getopt
+function appeared
+.Bx 4.3 .
+.Sh BUGS
+A single dash
+.Dq Li -
+may be specified as an character in
+.Fa optstring ,
+however it should
+.Em never
+have an argument associated with it.
+This allows
+.Fn getopt
+to be used with programs that expect
+.Dq Li -
+as an option flag.
+This practice is wrong, and should not be used in any current development.
+It is provided for backward compatibility
+.Em only .
+By default, a single dash causes
+.Fn getopt
+to return
+.Dv EOF .
+This is, we believe, compatible with System V.
+.Pp
+It is also possible to handle digits as option letters.
+This allows
+.Fn getopt
+to be used with programs that expect a number
+.Pq Dq Li \&-\&3
+as an option.
+This practice is wrong, and should not be used in any current development.
+It is provided for backward compatibility
+.Em only .
+The following code fragment works in most cases.
+.Bd -literal -offset indent
+int length;
+char *p;
+
+while ((c = getopt(argc, argv, "0123456789")) != EOF)
+	switch (c) {
+	case '0': case '1': case '2': case '3': case '4':
+	case '5': case '6': case '7': case '8': case '9':
+		p = argv[optind - 1];
+		if (p[0] == '-' && p[1] == ch && !p[2])
+			length = atoi(++p);
+		else
+			length = atoi(argv[optind] + 1);
+		break;
+	}
+}
+.Ed
diff --git a/lib/libc/stdlib/getopt.c b/lib/libc/stdlib/getopt.c
new file mode 100644
index 0000000..994d757
--- /dev/null
+++ b/lib/libc/stdlib/getopt.c
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 1987, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getopt.c	8.2 (Berkeley) 4/2/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int	opterr = 1,		/* if error message should be printed */
+	optind = 1,		/* index into parent argv vector */
+	optopt,			/* character checked for validity */
+	optreset;		/* reset getopt */
+char	*optarg;		/* argument associated with option */
+
+#define	BADCH	(int)'?'
+#define	BADARG	(int)':'
+#define	EMSG	""
+
+/*
+ * getopt --
+ *	Parse argc/argv argument vector.
+ */
+int
+getopt(nargc, nargv, ostr)
+	int nargc;
+	char * const *nargv;
+	const char *ostr;
+{
+	extern char *__progname;
+	static char *place = EMSG;		/* option letter processing */
+	char *oli;				/* option letter list index */
+
+	if (optreset || !*place) {		/* update scanning pointer */
+		optreset = 0;
+		if (optind >= nargc || *(place = nargv[optind]) != '-') {
+			place = EMSG;
+			return (EOF);
+		}
+		if (place[1] && *++place == '-') {	/* found "--" */
+			++optind;
+			place = EMSG;
+			return (EOF);
+		}
+	}					/* option letter okay? */
+	if ((optopt = (int)*place++) == (int)':' ||
+	    !(oli = strchr(ostr, optopt))) {
+		/*
+		 * if the user didn't specify '-' as an option,
+		 * assume it means EOF.
+		 */
+		if (optopt == (int)'-')
+			return (EOF);
+		if (!*place)
+			++optind;
+		if (opterr && *ostr != ':')
+			(void)fprintf(stderr,
+			    "%s: illegal option -- %c\n", __progname, optopt);
+		return (BADCH);
+	}
+	if (*++oli != ':') {			/* don't need argument */
+		optarg = NULL;
+		if (!*place)
+			++optind;
+	}
+	else {					/* need an argument */
+		if (*place)			/* no white space */
+			optarg = place;
+		else if (nargc <= ++optind) {	/* no arg */
+			place = EMSG;
+			if (*ostr == ':')
+				return (BADARG);
+			if (opterr)
+				(void)fprintf(stderr,
+				    "%s: option requires an argument -- %c\n",
+				    __progname, optopt);
+			return (BADCH);
+		}
+	 	else				/* white space */
+			optarg = nargv[optind];
+		place = EMSG;
+		++optind;
+	}
+	return (optopt);			/* dump back option letter */
+}
diff --git a/lib/libc/stdlib/getsubopt.3 b/lib/libc/stdlib/getsubopt.3
new file mode 100644
index 0000000..e1040d7
--- /dev/null
+++ b/lib/libc/stdlib/getsubopt.3
@@ -0,0 +1,145 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getsubopt.3	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt GETSUBOPT 3
+.Os
+.Sh NAME
+.Nm getsubopt
+.Nd get sub options from an argument
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Vt extern char *suboptarg
+.Ft int
+.Fn getsubopt "char **optionp" "char * const *tokens" "char **valuep"
+.Sh DESCRIPTION
+The
+.Fn getsubopt
+function
+parses a string containing tokens delimited by one or more tab, space or
+comma
+.Pq Ql \&,
+characters.
+It is intended for use in parsing groups of option arguments provided
+as part of a utility command line.
+.Pp
+The argument
+.Fa optionp
+is a pointer to a pointer to the string.
+The argument
+.Fa tokens
+is a pointer to a
+.Dv NULL Ns -terminated
+array of pointers to strings.
+.Pp
+The
+.Fn getsubopt
+function
+returns the zero-based offset of the pointer in the
+.Fa tokens
+array referencing a string which matches the first token
+in the string, or, \-1 if the string contains no tokens or
+.Fa tokens
+does not contain a matching string.
+.Pp
+If the token is of the form ``name=value'', the location referenced by
+.Fa valuep
+will be set to point to the start of the ``value'' portion of the token.
+.Pp
+On return from
+.Fn getsubopt ,
+.Fa optionp
+will be set to point to the start of the next token in the string,
+or the null at the end of the string if no more tokens are present.
+The external variable
+.Fa suboptarg
+will be set to point to the start of the current token, or
+.Dv NULL
+if no
+tokens were present.
+The argument
+.Fa valuep
+will be set to point to the ``value'' portion of the token, or
+.Dv NULL
+if no ``value'' portion was present.
+.Sh EXAMPLE
+.Bd -literal -compact
+char *tokens[] = {
+	#define	ONE	0
+		"one",
+	#define	TWO	1
+		"two",
+	NULL
+};
+
+\&...
+
+extern char *optarg, *suboptarg;
+char *options, *value;
+
+while ((ch = getopt(argc, argv, "ab:")) != \-1) {
+	switch(ch) {
+	case 'a':
+		/* process ``a'' option */
+		break;
+	case 'b':
+		options = optarg;
+		while (*options) {
+			switch(getsubopt(&options, tokens, &value)) {
+			case ONE:
+				/* process ``one'' sub option */
+				break;
+			case TWO:
+				/* process ``two'' sub option */
+				if (!value)
+					error("no value for two");
+				i = atoi(value);
+				break;
+			case \-1:
+				if (suboptarg)
+					error("illegal sub option %s",
+					  suboptarg);
+				else
+					error("missing sub option");
+				break;
+		}
+		break;
+	}
+.Ed
+.Sh SEE ALSO
+.Xr getopt 3 ,
+.Xr strsep 3
+.Sh HISTORY
+The
+.Fn getsubopt
+function first appeared in 4.4BSD.
diff --git a/lib/libc/stdlib/getsubopt.c b/lib/libc/stdlib/getsubopt.c
new file mode 100644
index 0000000..afd577a
--- /dev/null
+++ b/lib/libc/stdlib/getsubopt.c
@@ -0,0 +1,98 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)getsubopt.c	8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <unistd.h>
+#include <stdlib.h>
+
+/*
+ * The SVID interface to getsubopt provides no way of figuring out which
+ * part of the suboptions list wasn't matched.  This makes error messages
+ * tricky...  The extern variable suboptarg is a pointer to the token
+ * which didn't match.
+ */
+char *suboptarg;
+
+getsubopt(optionp, tokens, valuep)
+	register char **optionp, **valuep;
+	register char * const *tokens;
+{
+	register int cnt;
+	register char *p;
+
+	suboptarg = *valuep = NULL;
+
+	if (!optionp || !*optionp)
+		return(-1);
+
+	/* skip leading white-space, commas */
+	for (p = *optionp; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p);
+
+	if (!*p) {
+		*optionp = p;
+		return(-1);
+	}
+
+	/* save the start of the token, and skip the rest of the token. */
+	for (suboptarg = p;
+	    *++p && *p != ',' && *p != '=' && *p != ' ' && *p != '\t';);
+
+	if (*p) {
+		/*
+		 * If there's an equals sign, set the value pointer, and
+		 * skip over the value part of the token.  Terminate the
+		 * token.
+		 */
+		if (*p == '=') {
+			*p = '\0';
+			for (*valuep = ++p;
+			    *p && *p != ',' && *p != ' ' && *p != '\t'; ++p);
+			if (*p)
+				*p++ = '\0';
+		} else
+			*p++ = '\0';
+		/* Skip any whitespace or commas after this token. */
+		for (; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p);
+	}
+
+	/* set optionp for next round. */
+	*optionp = p;
+
+	for (cnt = 0; *tokens; ++tokens, ++cnt)
+		if (!strcmp(suboptarg, *tokens))
+			return(cnt);
+	return(-1);
+}
diff --git a/lib/libc/stdlib/heapsort.c b/lib/libc/stdlib/heapsort.c
new file mode 100644
index 0000000..d800064
--- /dev/null
+++ b/lib/libc/stdlib/heapsort.c
@@ -0,0 +1,184 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Ronnie Kon at Mindcraft Inc., Kevin Lew and Elmer Yglesias.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)heapsort.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <stddef.h>
+
+/*
+ * Swap two areas of size number of bytes.  Although qsort(3) permits random
+ * blocks of memory to be sorted, sorting pointers is almost certainly the
+ * common case (and, were it not, could easily be made so).  Regardless, it
+ * isn't worth optimizing; the SWAP's get sped up by the cache, and pointer
+ * arithmetic gets lost in the time required for comparison function calls.
+ */
+#define	SWAP(a, b, count, size, tmp) { \
+	count = size; \
+	do { \
+		tmp = *a; \
+		*a++ = *b; \
+		*b++ = tmp; \
+	} while (--count); \
+}
+
+/* Copy one block of size size to another. */
+#define COPY(a, b, count, size, tmp1, tmp2) { \
+	count = size; \
+	tmp1 = a; \
+	tmp2 = b; \
+	do { \
+		*tmp1++ = *tmp2++; \
+	} while (--count); \
+}
+
+/*
+ * Build the list into a heap, where a heap is defined such that for
+ * the records K1 ... KN, Kj/2 >= Kj for 1 <= j/2 <= j <= N.
+ *
+ * There two cases.  If j == nmemb, select largest of Ki and Kj.  If
+ * j < nmemb, select largest of Ki, Kj and Kj+1.
+ */
+#define CREATE(initval, nmemb, par_i, child_i, par, child, size, count, tmp) { \
+	for (par_i = initval; (child_i = par_i * 2) <= nmemb; \
+	    par_i = child_i) { \
+		child = base + child_i * size; \
+		if (child_i < nmemb && compar(child, child + size) < 0) { \
+			child += size; \
+			++child_i; \
+		} \
+		par = base + par_i * size; \
+		if (compar(child, par) <= 0) \
+			break; \
+		SWAP(par, child, count, size, tmp); \
+	} \
+}
+
+/*
+ * Select the top of the heap and 'heapify'.  Since by far the most expensive
+ * action is the call to the compar function, a considerable optimization
+ * in the average case can be achieved due to the fact that k, the displaced
+ * elememt, is ususally quite small, so it would be preferable to first
+ * heapify, always maintaining the invariant that the larger child is copied
+ * over its parent's record.
+ *
+ * Then, starting from the *bottom* of the heap, finding k's correct place,
+ * again maintianing the invariant.  As a result of the invariant no element
+ * is 'lost' when k is assigned its correct place in the heap.
+ *
+ * The time savings from this optimization are on the order of 15-20% for the
+ * average case. See Knuth, Vol. 3, page 158, problem 18.
+ *
+ * XXX Don't break the #define SELECT line, below.  Reiser cpp gets upset.
+ */
+#define SELECT(par_i, child_i, nmemb, par, child, size, k, count, tmp1, tmp2) { \
+	for (par_i = 1; (child_i = par_i * 2) <= nmemb; par_i = child_i) { \
+		child = base + child_i * size; \
+		if (child_i < nmemb && compar(child, child + size) < 0) { \
+			child += size; \
+			++child_i; \
+		} \
+		par = base + par_i * size; \
+		COPY(par, child, count, size, tmp1, tmp2); \
+	} \
+	for (;;) { \
+		child_i = par_i; \
+		par_i = child_i / 2; \
+		child = base + child_i * size; \
+		par = base + par_i * size; \
+		if (child_i == 1 || compar(k, par) < 0) { \
+			COPY(child, k, count, size, tmp1, tmp2); \
+			break; \
+		} \
+		COPY(child, par, count, size, tmp1, tmp2); \
+	} \
+}
+
+/*
+ * Heapsort -- Knuth, Vol. 3, page 145.  Runs in O (N lg N), both average
+ * and worst.  While heapsort is faster than the worst case of quicksort,
+ * the BSD quicksort does median selection so that the chance of finding
+ * a data set that will trigger the worst case is nonexistent.  Heapsort's
+ * only advantage over quicksort is that it requires little additional memory.
+ */
+int
+heapsort(vbase, nmemb, size, compar)
+	void *vbase;
+	size_t nmemb, size;
+	int (*compar) __P((const void *, const void *));
+{
+	register int cnt, i, j, l;
+	register char tmp, *tmp1, *tmp2;
+	char *base, *k, *p, *t;
+
+	if (nmemb <= 1)
+		return (0);
+
+	if (!size) {
+		errno = EINVAL;
+		return (-1);
+	}
+
+	if ((k = malloc(size)) == NULL)
+		return (-1);
+
+	/*
+	 * Items are numbered from 1 to nmemb, so offset from size bytes
+	 * below the starting address.
+	 */
+	base = (char *)vbase - size;
+
+	for (l = nmemb / 2 + 1; --l;)
+		CREATE(l, nmemb, i, j, t, p, size, cnt, tmp);
+
+	/*
+	 * For each element of the heap, save the largest element into its
+	 * final slot, save the displaced element (k), then recreate the
+	 * heap.
+	 */
+	while (nmemb > 1) {
+		COPY(k, base + nmemb * size, cnt, size, tmp1, tmp2);
+		COPY(base + nmemb * size, base + size, cnt, size, tmp1, tmp2);
+		--nmemb;
+		SELECT(i, j, nmemb, t, p, size, k, cnt, tmp1, tmp2);
+	}
+	free(k);
+	return (0);
+}
diff --git a/lib/libc/stdlib/labs.3 b/lib/libc/stdlib/labs.3
new file mode 100644
index 0000000..ef9ba80
--- /dev/null
+++ b/lib/libc/stdlib/labs.3
@@ -0,0 +1,66 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)labs.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt LABS 3
+.Os
+.Sh NAME
+.Nm labs
+.Nd return the absolute value of a long integer
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft long
+.Fn labs "long j"
+.Sh DESCRIPTION
+The
+.Fn labs
+function
+returns the absolute value of the long integer
+.Ar j .
+.Sh SEE ALSO
+.Xr abs 3 ,
+.Xr floor 3 ,
+.Xr cabs 3 ,
+.Xr math 3
+.Sh STANDARDS
+The
+.Fn labs
+function
+conforms to
+.St -ansiC .
+.Sh BUGS
+The absolute value of the most negative integer remains negative.
diff --git a/lib/libc/stdlib/labs.c b/lib/libc/stdlib/labs.c
new file mode 100644
index 0000000..4adc398
--- /dev/null
+++ b/lib/libc/stdlib/labs.c
@@ -0,0 +1,45 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)labs.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdlib.h>
+
+long
+labs(j)
+	long j;
+{
+	return(j < 0 ? -j : j);
+}
diff --git a/lib/libc/stdlib/ldiv.3 b/lib/libc/stdlib/ldiv.3
new file mode 100644
index 0000000..a68952f
--- /dev/null
+++ b/lib/libc/stdlib/ldiv.3
@@ -0,0 +1,70 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)ldiv.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt LDIV 3
+.Os
+.Sh NAME
+.Nm ldiv
+.Nd return quotient and remainder from division
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft ldiv_t
+.Fn ldiv "int num" "int denom"
+.Sh DESCRIPTION
+The
+.Fn ldiv
+function
+computes the value
+.Ar num/denom
+and returns the quotient and remainder in a structure named
+.Ar ldiv_t
+that contains two
+.Em long integer
+members named
+.Ar quot
+and
+.Ar rem .
+.Sh SEE ALSO
+.Xr div 3 ,
+.Xr math 3
+.Sh STANDARDS
+The
+.Fn ldiv
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/stdlib/ldiv.c b/lib/libc/stdlib/ldiv.c
new file mode 100644
index 0000000..d458efd
--- /dev/null
+++ b/lib/libc/stdlib/ldiv.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ldiv.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdlib.h>		/* ldiv_t */
+
+ldiv_t
+ldiv(num, denom)
+	long num, denom;
+{
+	ldiv_t r;
+
+	/* see div.c for comments */
+
+	r.quot = num / denom;
+	r.rem = num % denom;
+	if (num >= 0 && r.rem < 0) {
+		r.quot++;
+		r.rem -= denom;
+	}
+	return (r);
+}
diff --git a/lib/libc/stdlib/malloc.3 b/lib/libc/stdlib/malloc.3
new file mode 100644
index 0000000..94a3fd6
--- /dev/null
+++ b/lib/libc/stdlib/malloc.3
@@ -0,0 +1,191 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)malloc.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt MALLOC 3
+.Os BSD 4
+.Sh NAME
+.Nm malloc ,
+.Nd general memory allocation function
+.Pp
+.Nm free
+.Nd free up memory allocated with malloc, calloc or realloc
+.Pp
+.Nm realloc
+.Nd reallocation of memory function
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft void *
+.Fn malloc "size_t size"
+.Ft void
+.Fn free "void *ptr"
+.Ft void *
+.Fn realloc "void *ptr" "size_t size"
+.Sh DESCRIPTION
+The
+.Fn malloc
+function allocates uninitialized space for an object whose
+size is specified by
+.Fa size .
+The
+.Fn malloc
+function maintains multiple lists of free blocks according to size, allocating
+space from the appropriate list.
+.Pp
+The allocated space is
+suitably aligned (after possible pointer
+coercion) for storage of any type of object. If the space is of
+.Em pagesize
+or larger, the memory returned will be page-aligned.
+.Pp
+The
+.Fn free
+function causes the space pointed to by
+.Fa ptr
+to be deallocated, that is, at least made available for further allocation,
+but if possible, it will passed back to the kernel with
+.Xr sbrk 2 .
+If
+.Fa ptr
+is a null pointer, no action occurs.
+.Pp
+The
+.Fn realloc
+function changes the size of the object pointed to by
+.Fa ptr
+to the size specified by
+.Fa size .
+The contents of the object are unchanged up to the lesser
+of the new and old sizes.
+If the new size is larger, the value of the newly allocated portion
+of the object is indeterminate.
+If
+.Fa ptr
+is a null pointer, the
+.Fn realloc
+function behaves like the
+.Fn malloc 
+function for the specified size.
+If the space cannot be allocated, the object 
+pointed to by
+.Fa ptr
+is unchanged.
+If
+.Fa size
+is zero and
+.Fa ptr
+is not a null pointer, the object it points to is freed.
+.Pp
+
+.Sh ENVIRONMENT
+This malloc will check the environment for a variable called
+.Em MALLOC_OPTIONS
+and scan it for flags.
+Flags are single letters, uppercase means on, lowercase means off.
+.Bl -tag -width indent
+.It A
+``abort'' malloc will coredump the process, rather that tollerate failure.
+This is a very handy debugging aid, since the core file will represent the
+time of failure,
+rather than when the NULL pointer was accessed.
+
+.It D
+``dump'' malloc will dump statistics in a file called ``malloc.out'' at exit.
+
+.It J
+``junk'' fill some junk into the area allocated.
+Currently junk is bytes of 0xd0, this is pronounced ``Duh'' :-)
+
+.It R
+``realloc'' always reallocate when
+.Fn realloc
+is called, even if the initial allocation was big enough.
+This can substantially aid in compacting memory.
+
+.It Z
+``zero'' fill some junk into the area allocated (see ``J''),
+except for the exact length the user asked for, which is zerod.
+
+.El
+.Pp
+The ``J'' and ``Z'' is mostly for testing and debugging,
+if a program changes behaviour if either of these options are used,
+it is buggy.
+.Sh RETURN VALUES
+The
+.Fn malloc
+function returns
+a pointer to the allocated space if successful; otherwise
+a null pointer is returned.
+.Pp
+The
+.Fn free
+function returns no value.
+.Pp
+The
+.Fn realloc
+function returns either a null pointer or a pointer
+to the possibly moved allocated space.
+.Sh SEE ALSO
+.Xr brk 2 ,
+.Xr pagesize 2 ,
+.Xr calloc 3 ,
+.Xr alloca 3 ,
+.Xr memory 3
+.Sh STANDARDS
+The
+.Fn malloc
+function conforms to
+.St -ansiC .
+.Sh HISTORY
+The present implementation of malloc started out as a filesystem on a drum
+attached to a 20bit binary challenged computer built with discrete germanium
+transistors, and it has since graduated to handle primary storage rather than
+secondary.
+.Pp
+The main difference from other malloc implementations are belived to be that
+the free pages are not accessed until allocated.
+Most malloc implementations will store a data structure containing a, 
+possibly double-, linked list in the free chunks of memory, used to tie
+all the free memory together.
+That is a quite suboptimal thing to do.
+Every time the free-list is traversed, all the otherwise unused, and very
+likely paged out, pages get faulted into primary memory, just to see what
+lies after them in the list.
+.Pp
+On systems which are paging, this can make a factor five in difference on the
+pagefaults of a process.
diff --git a/lib/libc/stdlib/malloc.c b/lib/libc/stdlib/malloc.c
new file mode 100644
index 0000000..4299028
--- /dev/null
+++ b/lib/libc/stdlib/malloc.c
@@ -0,0 +1,1155 @@
+/*
+ * ----------------------------------------------------------------------------
+ * "THE BEER-WARE LICENSE" (Revision 42):
+ * <phk@FreeBSD.ORG> wrote this file.  As long as you retain this notice you
+ * can do whatever you want with this stuff. If we meet some day, and you think
+ * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
+ * ----------------------------------------------------------------------------
+ *
+ * $Id: malloc.c,v 1.8 1995/12/18 12:03:54 phk Exp $
+ *
+ */
+
+/*
+ * Defining EXTRA_SANITY will enable some checks which are related
+ * to internal conditions and consistency in malloc.c
+ */
+#undef EXTRA_SANITY
+
+/*
+ * Defining MALLOC_STATS will enable you to call malloc_dump() and set
+ * the [dD] options in the MALLOC_OPTIONS environment variable.
+ * It has no run-time performance hit.
+ */
+#define MALLOC_STATS
+
+#if defined(EXTRA_SANITY) && !defined(MALLOC_STATS)
+# define MALLOC_STATS	/* required for EXTRA_SANITY */
+#endif
+
+/*
+ * What to use for Junk
+ */
+#define SOME_JUNK	0xd0		/* as in "Duh" :-) */
+
+/*
+ * If these weren't defined here, they would be calculated on the fly,
+ * at a considerable cost in performance.
+ */
+#if defined(__i386__) && defined(__FreeBSD__)
+#   define malloc_pagesize		4096U
+#   define malloc_pageshift		12U
+#   define malloc_minsize		16U
+#   define malloc_maxsize		((malloc_pagesize)>>1)
+#endif /* __i386__ && __FreeBSD__ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <memory.h>
+#include <errno.h>
+#include <err.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+
+/*
+ * This structure describes a page worth of chunks.
+ */
+
+struct pginfo {
+    struct pginfo	*next;	/* next on the free list */
+    void		*page;	/* Pointer to the page */
+    u_short		size;	/* size of this page's chunks */
+    u_short		shift;	/* How far to shift for this size chunks */
+    u_short		free;	/* How many free chunks */
+    u_short		total;	/* How many chunk */
+    u_long		bits[1]; /* Which chunks are free */
+};
+
+/*
+ * This structure describes a number of free pages.
+ */
+
+struct pgfree {
+    struct pgfree	*next;	/* next run of free pages */
+    struct pgfree	*prev;	/* prev run of free pages */
+    void		*page;	/* pointer to free pages */
+    void		*end;	/* pointer to end of free pages */
+    u_long		size;	/* number of bytes free */
+};
+
+/*
+ * How many bits per u_long in the bitmap.
+ * Change only if not 8 bits/byte
+ */
+#define	MALLOC_BITS	(8*sizeof(u_long))
+
+/*
+ * Magic values to put in the page_directory
+ */
+#define MALLOC_NOT_MINE	((struct pginfo*) 0)
+#define MALLOC_FREE 	((struct pginfo*) 1)
+#define MALLOC_FIRST	((struct pginfo*) 2)
+#define MALLOC_FOLLOW	((struct pginfo*) 3)
+#define MALLOC_MAGIC	((struct pginfo*) 4)
+
+/*
+ * The i386 architecture has some very convenient instructions.
+ * We might as well use them.  There are C-language backups, but
+ * they are considerably slower.
+ */
+#ifdef __i386__
+#define ffs _ffs
+static __inline int
+_ffs(unsigned input)
+{
+	int result;
+	asm("bsfl %1,%0" : "=r" (result) : "r" (input));
+	return result+1;
+}
+
+#define fls _fls
+static __inline int
+_fls(unsigned input)
+{
+	int result;
+	asm("bsrl %1,%0" : "=r" (result) : "r" (input));
+	return result+1;
+}
+
+#define set_bit _set_bit
+static __inline void
+_set_bit(struct pginfo *pi, int bit)
+{
+	asm("btsl %0,(%1)" :
+	: "r" (bit & (MALLOC_BITS-1)), "r" (pi->bits+(bit/MALLOC_BITS)));
+}
+
+#define clr_bit _clr_bit
+static __inline void
+_clr_bit(struct pginfo *pi, int bit)
+{
+	asm("btcl %0,(%1)" :
+	: "r" (bit & (MALLOC_BITS-1)), "r" (pi->bits+(bit/MALLOC_BITS)));
+}
+
+#endif /* __i386__ */
+
+/*
+ * Set to one when malloc_init has been called
+ */
+static	unsigned	initialized;
+
+/*
+ * The size of a page.
+ * Must be a integral multiplum of the granularity of mmap(2).
+ * Your toes will curl if it isn't a power of two
+ */
+#ifndef malloc_pagesize
+static	unsigned        malloc_pagesize;
+#endif /* malloc_pagesize */
+
+/*
+ * A mask for the offset inside a page.
+ */
+#define malloc_pagemask	((malloc_pagesize)-1)
+
+#define pageround(foo) (((foo) + (malloc_pagemask))&(~(malloc_pagemask)))
+#define ptr2index(foo) (((u_long)(foo) >> malloc_pageshift)-malloc_origo)
+
+/*
+ * malloc_pagesize == 1 << malloc_pageshift
+ */
+#ifndef malloc_pageshift
+static	unsigned	malloc_pageshift;
+#endif /* malloc_pageshift */
+
+/*
+ * The smallest allocation we bother about.
+ * Must be power of two
+ */
+#ifndef malloc_minsize
+static	unsigned  malloc_minsize;
+#endif /* malloc_minsize */
+
+/*
+ * The largest chunk we care about.
+ * Must be smaller than pagesize
+ * Must be power of two
+ */
+#ifndef malloc_maxsize
+static	unsigned  malloc_maxsize;
+#endif /* malloc_maxsize */
+
+/*
+ * The minimum size (in bytes) of the free page cache.
+ */
+#ifndef malloc_cache
+static	unsigned  malloc_cache;
+#endif /* malloc_cache */
+
+/*
+ * The offset from pagenumber to index into the page directory
+ */
+static	u_long  malloc_origo;
+
+/*
+ * The last index in the page directory we care about
+ */
+static	u_long  last_index;
+
+/*
+ * Pointer to page directory.
+ * Allocated "as if with" malloc
+ */
+static	struct	pginfo **page_dir;
+
+/*
+ * How many slots in the page directory
+ */
+static	unsigned	malloc_ninfo;
+
+/*
+ * Free pages line up here
+ */
+static struct pgfree	free_list;
+
+/*
+ * Abort() if we fail to get VM ?
+ */
+static int malloc_abort;
+
+/*
+ * Are we trying to die ?
+ */
+static int suicide;
+
+#ifdef MALLOC_STATS
+/*
+ * dump statistics
+ */
+static int malloc_stats;
+#endif /* MALLOC_STATS */
+
+/*
+ * always realloc ?
+ */
+static int malloc_realloc;
+
+/*
+ * zero fill ?
+ */
+static int malloc_zero;
+
+/*
+ * junk fill ?
+ */
+static int malloc_junk;
+
+/*
+ * my last break.
+ */
+static void *malloc_brk;
+
+/*
+ * one location cache for free-list holders
+ */
+static struct pgfree *px;
+
+/*
+ * Necessary function declarations
+ */
+static int extend_pgdir(u_long index);
+
+#ifdef MALLOC_STATS
+void
+malloc_dump(FILE *fd)
+{
+    struct pginfo **pd;
+    struct pgfree *pf;
+    int j;
+
+    pd = page_dir;
+
+    /* print out all the pages */
+    for(j=0;j<=last_index;j++) {
+	fprintf(fd,"%08lx %5d ",(j+malloc_origo) << malloc_pageshift,j);
+	if (pd[j] == MALLOC_NOT_MINE) {
+	    for(j++;j<=last_index && pd[j] == MALLOC_NOT_MINE;j++)
+		;
+	    j--;
+	    fprintf(fd,".. %5d not mine\n",	j);
+	} else if (pd[j] == MALLOC_FREE) {
+	    for(j++;j<=last_index && pd[j] == MALLOC_FREE;j++)
+		;
+	    j--;
+	    fprintf(fd,".. %5d free\n", j);
+	} else if (pd[j] == MALLOC_FIRST) {
+	    for(j++;j<=last_index && pd[j] == MALLOC_FOLLOW;j++)
+		;
+	    j--;
+	    fprintf(fd,".. %5d in use\n", j);
+	} else if (pd[j] < MALLOC_MAGIC) {
+	    fprintf(fd,"(%p)\n", pd[j]);
+	} else {
+	    fprintf(fd,"%p %d (of %d) x %d @ %p --> %p\n",
+		pd[j],pd[j]->free, pd[j]->total,
+		pd[j]->size, pd[j]->page, pd[j]->next);
+	}
+    }
+
+    for(pf=free_list.next; pf; pf=pf->next) {
+	fprintf(fd,"Free: @%p [%p...%p[ %ld ->%p <-%p\n",
+		pf,pf->page,pf->end,pf->size,pf->prev,pf->next);
+	if (pf == pf->next) {
+		fprintf(fd,"Free_list loops.\n");
+		break;
+	}
+    }
+
+    /* print out various info */
+    fprintf(fd,"Minsize\t%d\n",malloc_minsize);
+    fprintf(fd,"Maxsize\t%d\n",malloc_maxsize);
+    fprintf(fd,"Pagesize\t%d\n",malloc_pagesize);
+    fprintf(fd,"Pageshift\t%d\n",malloc_pageshift);
+    fprintf(fd,"FirstPage\t%ld\n",malloc_origo);
+    fprintf(fd,"LastPage\t%ld %lx\n",last_index+malloc_pageshift,
+	(last_index + malloc_pageshift) << malloc_pageshift);
+    fprintf(fd,"Break\t%ld\n",(u_long)sbrk(0) >> malloc_pageshift);
+}
+#endif /* MALLOC_STATS */
+
+static void
+wrterror(char *p)
+{
+    char *q = "Malloc error: ";
+    suicide = 1;
+    write(2,q,strlen(q));
+    write(2,p,strlen(p));
+#ifdef MALLOC_STATS
+    if (malloc_stats)
+	malloc_dump(stderr);
+#endif /* MALLOC_STATS */
+    abort();
+}
+
+static void
+wrtwarning(char *p)
+{
+    char *q = "Malloc warning: ";
+    if (malloc_abort)
+	wrterror(p);
+    write(2,q,strlen(q));
+    write(2,p,strlen(p));
+}
+
+#ifdef EXTRA_SANITY
+static void
+malloc_exit()
+{
+    FILE *fd = fopen("malloc.out","a");
+    char *q = "malloc() warning: Couldn't dump stats.\n";
+    if (fd) {
+        malloc_dump(fd);
+	fclose(fd);
+    } else
+	write(2,q,strlen(q));
+}
+#endif /* EXTRA_SANITY */
+
+
+/*
+ * Allocate a number of pages from the OS
+ */
+static caddr_t
+map_pages(int pages)
+{
+    caddr_t result,tail;
+
+    result = (caddr_t)pageround((u_long)sbrk(0));
+    tail = result + (pages << malloc_pageshift);
+
+    if (brk(tail)) {
+#ifdef EXTRA_SANITY
+	wrterror("(internal): map_pages fails\n");
+#endif /* EXTRA_SANITY */
+	return 0;
+    }
+
+    last_index = ptr2index(tail) - 1;
+    malloc_brk = tail;
+
+    if ((last_index+1) >= malloc_ninfo && !extend_pgdir(last_index))
+	return 0;;
+
+    return result;
+}
+
+/*
+ * Set a bit in the bitmap
+ */
+#ifndef set_bit
+static __inline void
+set_bit(struct pginfo *pi, int bit)
+{
+    pi->bits[bit/MALLOC_BITS] |= 1<<(bit%MALLOC_BITS);
+}
+#endif /* set_bit */
+
+/*
+ * Clear a bit in the bitmap
+ */
+#ifndef clr_bit
+static __inline void
+clr_bit(struct pginfo *pi, int bit)
+{
+    pi->bits[bit/MALLOC_BITS] &= ~(1<<(bit%MALLOC_BITS));
+}
+#endif /* clr_bit */
+
+#ifndef tst_bit
+/*
+ * Test a bit in the bitmap
+ */
+static __inline int
+tst_bit(struct pginfo *pi, int bit)
+{
+    return pi->bits[bit/MALLOC_BITS] & (1<<(bit%MALLOC_BITS));
+}
+#endif /* tst_bit */
+
+/*
+ * Find last bit
+ */
+#ifndef fls
+static __inline int
+fls(int size)
+{
+    int i = 1;
+    while (size >>= 1)
+	i++;
+    return i;
+}
+#endif /* fls */
+
+/*
+ * Extend page directory
+ */
+static int
+extend_pgdir(u_long index)
+{
+    struct  pginfo **new,**old;
+    int i, oldlen;
+
+    /* Make it this many pages */
+    i = index * sizeof *page_dir;
+    i /= malloc_pagesize;
+    i += 2;
+
+    /* remember the old mapping size */
+    oldlen = malloc_ninfo * sizeof *page_dir;
+
+    /*
+     * NOTE: we allocate new pages and copy the directory rather than tempt
+     * fate by trying to "grow" the region.. There is nothing to prevent
+     * us from accidently re-mapping space that's been allocated by our caller
+     * via dlopen() or other mmap().
+     *
+     * The copy problem is not too bad, as there is 4K of page index per
+     * 4MB of malloc arena.
+     *
+     * We can totally avoid the copy if we open a file descriptor to associate
+     * the anon mappings with.  Then, when we remap the pages at the new
+     * address, the old pages will be "magically" remapped..  But this means
+     * keeping open a "secret" file descriptor.....
+     */
+
+    /* Get new pages */
+    new = (struct pginfo**) mmap(0, i * malloc_pagesize, PROT_READ|PROT_WRITE,
+				 MAP_ANON|MAP_PRIVATE, -1, 0);
+    if (new == (struct pginfo **)-1)
+	return 0;
+
+    /* Copy the old stuff */
+    memcpy(new, page_dir,
+	    malloc_ninfo * sizeof *page_dir);
+
+    /* register the new size */
+    malloc_ninfo = i * malloc_pagesize / sizeof *page_dir;
+
+    /* swap the pointers */
+    old = page_dir;
+    page_dir = new;
+
+    /* Now free the old stuff */
+    munmap((caddr_t)old, oldlen);
+    return 1;
+}
+
+/*
+ * Initialize the world
+ */
+static void
+malloc_init ()
+{
+    char *p;
+
+#ifdef EXTRA_SANITY
+    malloc_junk = 1;
+#endif /* EXTRA_SANITY */
+
+    for (p=getenv("MALLOC_OPTIONS"); p && *p; p++) {
+	switch (*p) {
+	    case 'a': malloc_abort   = 0; break;
+	    case 'A': malloc_abort   = 1; break;
+#ifdef MALLOC_STATS
+	    case 'd': malloc_stats   = 0; break;
+	    case 'D': malloc_stats   = 1; break;
+#endif /* MALLOC_STATS */
+	    case 'r': malloc_realloc = 0; break;
+	    case 'R': malloc_realloc = 1; break;
+	    case 'j': malloc_junk    = 0; break;
+	    case 'J': malloc_junk    = 1; break;
+	    case 'z': malloc_zero    = 0; break;
+	    case 'Z': malloc_zero    = 1; break;
+	    default:
+		wrtwarning("(Init): Unknown char in MALLOC_OPTIONS\n");
+		p = 0;
+		break;
+	}
+    }
+
+    /*
+     * We want junk in the entire allocation, and zero only in the part
+     * the user asked for.
+     */
+    if (malloc_zero)
+	malloc_junk=1;
+
+#ifdef EXTRA_SANITY
+    if (malloc_stats)
+	atexit(malloc_exit);
+#endif /* EXTRA_SANITY */
+
+#ifndef malloc_pagesize
+    /* determine our pagesize */
+    malloc_pagesize = getpagesize();
+#endif /* malloc_pagesize */
+
+#ifndef malloc_maxsize
+    malloc_maxsize = malloc_pagesize >> 1;
+#endif /* malloc_maxsize */
+
+#ifndef malloc_pageshift
+    {
+    int i;
+    /* determine how much we shift by to get there */
+    for (i = malloc_pagesize; i > 1; i >>= 1)
+	malloc_pageshift++;
+    }
+#endif /* malloc_pageshift */
+
+#ifndef malloc_cache
+    malloc_cache = 100 << malloc_pageshift;
+#endif /* malloc_cache */
+
+#ifndef malloc_minsize
+    {
+    int i;
+    /*
+     * find the smallest size allocation we will bother about.
+     * this is determined as the smallest allocation that can hold
+     * it's own pginfo;
+     */
+    i = 2;
+    for(;;) {
+	int j;
+
+	/* Figure out the size of the bits */
+	j = malloc_pagesize/i;
+	j /= 8;
+	if (j < sizeof(u_long))
+		j = sizeof (u_long);
+	if (sizeof(struct pginfo) + j - sizeof (u_long) <= i)
+		break;
+	i += i;
+    }
+    malloc_minsize = i;
+    }
+#endif /* malloc_minsize */
+
+    /* Allocate one page for the page directory */
+    page_dir = (struct pginfo **) mmap(0, malloc_pagesize, PROT_READ|PROT_WRITE,
+				       MAP_ANON|MAP_PRIVATE, -1, 0);
+    if (page_dir == (struct pginfo **) -1)
+	wrterror("(Init) my first mmap failed.  (check limits ?)\n");
+
+    /*
+     * We need a maximum of malloc_pageshift buckets, steal these from the
+     * front of the page_directory;
+     */
+    malloc_origo = ((u_long)pageround((u_long)sbrk(0))) >> malloc_pageshift;
+    malloc_origo -= malloc_pageshift;
+
+    malloc_ninfo = malloc_pagesize / sizeof *page_dir;
+
+    /* Been here, done that */
+    initialized++;
+
+    /*
+     * This is a nice hack from Kaleb Keithly (kaleb@x.org).
+     * We can sbrk(2) further back when we keep this on a low address.
+     */
+    px = (struct pgfree *) malloc (sizeof *px);
+}
+
+/*
+ * Allocate a number of complete pages
+ */
+void *
+malloc_pages(size_t size)
+{
+    void *p,*delay_free = 0;
+    int i;
+    struct pgfree *pf;
+    u_long index;
+
+    size = pageround(size);
+
+    p = 0;
+    /* Look for free pages before asking for more */
+    for(pf = free_list.next; pf; pf = pf->next) {
+
+#ifdef EXTRA_SANITY
+	if (pf->size & malloc_pagemask)
+	    wrterror("(ES): junk length entry on free_list\n");
+	if (!pf->size)
+	    wrterror("(ES): zero length entry on free_list\n");
+	if (pf->page == pf->end)
+	    wrterror("(ES): zero entry on free_list\n");
+	if (pf->page > pf->end) 
+	    wrterror("(ES): sick entry on free_list\n");
+	if ((void*)pf->page >= (void*)sbrk(0))
+	    wrterror("(ES): entry on free_list past brk\n");
+	if (page_dir[ptr2index(pf->page)] != MALLOC_FREE) 
+	    wrterror("(ES): non-free first page on free-list\n");
+	if (page_dir[ptr2index(pf->end)-1] != MALLOC_FREE)
+	    wrterror("(ES): non-free last page on free-list\n");
+#endif /* EXTRA_SANITY */
+
+	if (pf->size < size)
+	    continue;
+
+	if (pf->size == size) {
+	    p = pf->page;
+	    if (pf->next)
+		    pf->next->prev = pf->prev;
+	    pf->prev->next = pf->next;
+	    delay_free = pf;
+	    break;
+	} 
+
+	p = pf->page;
+	pf->page += size;
+	pf->size -= size;
+	break;
+    }
+
+#ifdef EXTRA_SANITY
+    if (p && page_dir[ptr2index(p)] != MALLOC_FREE)
+	wrterror("(ES): allocated non-free page on free-list\n");
+#endif /* EXTRA_SANITY */
+
+    size >>= malloc_pageshift;
+
+    /* Map new pages */
+    if (!p)
+	p = map_pages(size);
+
+    if (p) {
+
+	index = ptr2index(p);
+	page_dir[index] = MALLOC_FIRST;
+	for (i=1;i<size;i++)
+	    page_dir[index+i] = MALLOC_FOLLOW;
+
+	if (malloc_junk)
+	    memset(p, SOME_JUNK,size << malloc_pageshift);
+    }
+
+    if (delay_free) {
+	if (!px)
+	    px = delay_free;
+	else
+	    free(delay_free);
+    }
+
+    return p;
+}
+
+/*
+ * Allocate a page of fragments
+ */
+
+static __inline int
+malloc_make_chunks(int bits)
+{
+    struct  pginfo *bp;
+    void *pp;
+    int i,k,l;
+
+    /* Allocate a new bucket */
+    pp = malloc_pages(malloc_pagesize);
+    if (!pp)
+	return 0;
+
+    /* Find length of admin structure */
+    l = sizeof *bp - sizeof(u_long);
+    l += sizeof(u_long) *
+	(((malloc_pagesize >> bits)+MALLOC_BITS-1) / MALLOC_BITS);
+
+    /* Don't waste more than two chunks on this */
+    if ((1<<(bits)) <= l+l) {
+	bp = (struct  pginfo *)pp;
+    } else {
+	bp = (struct  pginfo *)malloc(l);
+	if (!bp)
+	    return 0;
+    }
+
+    bp->size = (1<<bits);
+    bp->shift = bits;
+    bp->total = bp->free = malloc_pagesize >> bits;
+    bp->page = pp;
+
+    page_dir[ptr2index(pp)] = bp;
+
+    bp->next = page_dir[bits];
+    page_dir[bits] = bp;
+
+    /* set all valid bits in the bits */
+    k = bp->total;
+    i = 0;
+
+    /* Do a bunch at a time */
+    for(;k-i >= MALLOC_BITS; i += MALLOC_BITS)
+	bp->bits[i / MALLOC_BITS] = ~0;
+
+    for(; i < k; i++)
+	set_bit(bp,i);
+
+    if (bp == bp->page) {
+	/* Mark the ones we stole for ourselves */
+	for(i=0;l > 0;i++) {
+	    clr_bit(bp,i);
+	    bp->free--;
+	    bp->total--;
+	    l -= (1 << bits);
+	}
+    }
+
+    return 1;
+}
+
+/*
+ * Allocate a fragment
+ */
+static void *
+malloc_bytes(size_t size)
+{
+    int j;
+    struct  pginfo *bp;
+    int k;
+    u_long *lp;
+
+    /* Don't bother with anything less than this */
+    if (size < malloc_minsize)
+	size = malloc_minsize;
+
+    /* Find the right bucket */
+    j = fls((size)-1);
+
+    /* If it's empty, make a page more of that size chunks */
+    if (!page_dir[j] && !malloc_make_chunks(j))
+	return 0;
+
+    bp = page_dir[j];
+
+    /* Find first word of bitmap which isn't empty */
+    for (lp = bp->bits; !*lp; lp++)
+	;
+
+    /* Find that bit, and tweak it */
+    k = ffs(*lp) - 1;
+    *lp ^= 1<<k;
+
+    /* If there are no more free, remove from free-list */
+    if (!--bp->free) {
+	page_dir[j] = bp->next;
+	bp->next = 0;
+    }
+
+    /* Adjust to the real offset of that chunk */
+    k += (lp-bp->bits)*MALLOC_BITS;
+    k <<= bp->shift;
+
+    if (malloc_junk)
+	memset(bp->page + k, SOME_JUNK, bp->size);
+
+    return bp->page + k;
+}
+
+/*
+ * Allocate a piece of memory
+ */
+void *
+malloc(size_t size)
+{
+    void *result;
+
+    if (!initialized)
+	malloc_init();
+
+    if (suicide)
+	abort();
+
+    if (size <= malloc_maxsize)
+	result =  malloc_bytes(size);
+    else
+	result =  malloc_pages(size);
+
+    if (malloc_abort && !result)
+	wrterror("malloc(): returns NULL\n");
+
+    if (malloc_zero)
+	memset(result,0,size);
+
+    return result;
+}
+
+/*
+ * Change the size of an allocation.
+ */
+void *
+realloc(void *ptr, size_t size)
+{
+    void *p;
+    u_long osize,index;
+    struct pginfo **mp;
+    int i;
+
+    if (suicide)
+	return 0;
+
+    if (!ptr)				/* Bounce to malloc() */
+	return malloc(size);
+
+    if (!initialized) {
+	wrtwarning("realloc(): malloc() never got called.\n");
+	return 0;
+    }
+
+    if (ptr && !size) {			/* Bounce to free() */
+	free(ptr);
+	return 0;
+    }
+
+    index = ptr2index(ptr);
+
+    if (index < malloc_pageshift) {
+	wrtwarning("realloc(): junk pointer (too low)\n");
+	return 0;
+    }
+
+    if (index > last_index) {
+	wrtwarning("realloc(): junk pointer (too high)\n");
+	return 0;
+    }
+
+    mp = &page_dir[index];
+
+    if (*mp == MALLOC_FIRST) {			/* Page allocation */
+
+	/* Check the pointer */
+	if ((u_long)ptr & malloc_pagemask) {
+	    wrtwarning("realloc(): modified page pointer.\n");
+	    return 0;
+	}
+
+	/* Find the size in bytes */
+	for (osize = malloc_pagesize; *++mp == MALLOC_FOLLOW;)
+	    osize += malloc_pagesize;
+
+        if (!malloc_realloc && 			/* unless we have to, */
+	  size <= osize && 			/* .. or are too small, */
+	  size > (osize - malloc_pagesize))	/* .. or can free a page, */
+	    return ptr;				/* don't do anything. */
+
+    } else if (*mp >= MALLOC_MAGIC) {		/* Chunk allocation */
+
+	/* Check the pointer for sane values */
+	if (((u_long)ptr & ((*mp)->size-1))) {
+	    wrtwarning("realloc(): modified chunk pointer.\n");
+	    return 0;
+	}
+
+	/* Find the chunk index in the page */
+	i = ((u_long)ptr & malloc_pagemask) >> (*mp)->shift;
+
+	/* Verify that it isn't a free chunk already */
+	if (tst_bit(*mp,i)) {
+	    wrtwarning("realloc(): already free chunk.\n");
+	    return 0;
+	}
+
+	osize = (*mp)->size;
+
+	if (!malloc_realloc &&		/* Unless we have to, */
+	  size < osize && 		/* ..or are too small, */
+	  (size > osize/2 ||	 	/* ..or could use a smaller size, */
+	  osize == malloc_minsize))	/* ..(if there is one) */
+	    return ptr;			/* ..Don't do anything */
+
+    } else {
+	wrtwarning("realloc(): wrong page pointer.\n");
+	return 0;
+    }
+
+    p = malloc(size);
+
+    if (p) {
+	/* copy the lesser of the two sizes, and free the old one */
+	if (osize < size)
+	    memcpy(p,ptr,osize);
+	else
+	    memcpy(p,ptr,size);
+	free(ptr);
+    } 
+    return p;
+}
+
+/*
+ * Free a sequence of pages
+ */
+
+static __inline void
+free_pages(void *ptr, int index, struct pginfo *info)
+{
+    int i;
+    struct pgfree *pf,*pt;
+    u_long l;
+    void *tail;
+
+    if (info == MALLOC_FREE) {
+	wrtwarning("free(): already free page.\n");
+	return;
+    }
+
+    if (info != MALLOC_FIRST) {
+	wrtwarning("free(): freeing wrong page.\n");
+	return;
+    }
+
+    if ((u_long)ptr & malloc_pagemask) {
+	wrtwarning("free(): modified page pointer.\n");
+	return;
+    }
+
+    /* Count how many pages and mark them free at the same time */
+    page_dir[index] = MALLOC_FREE;
+    for (i = 1; page_dir[index+i] == MALLOC_FOLLOW; i++)
+	page_dir[index + i] = MALLOC_FREE;
+
+    l = i << malloc_pageshift;
+
+    tail = ptr+l;
+
+    /* add to free-list */
+    if (!px)
+	px = malloc(sizeof *pt);	/* This cannot fail... */
+    px->page = ptr;
+    px->end =  tail;
+    px->size = l;
+    if (!free_list.next) {
+
+	/* Nothing on free list, put this at head */
+	px->next = free_list.next;
+	px->prev = &free_list;
+	free_list.next = px;
+	pf = px;
+	px = 0;
+
+    } else {
+
+	/* Find the right spot, leave pf pointing to the modified entry. */
+	tail = ptr+l;
+
+	for(pf = free_list.next; pf->end < ptr && pf->next; pf = pf->next)
+	    ; /* Race ahead here */
+
+	if (pf->page > tail) {
+	    /* Insert before entry */
+	    px->next = pf;
+	    px->prev = pf->prev;
+	    pf->prev = px;
+	    px->prev->next = px;
+	    pf = px;
+	    px = 0;
+	} else if (pf->end == ptr ) {
+	    /* Append to the previous entry */
+	    pf->end += l;
+	    pf->size += l;
+	    if (pf->next && pf->end == pf->next->page ) {
+		/* And collapse the next too. */
+		pt = pf->next;
+		pf->end = pt->end;
+		pf->size += pt->size;
+		pf->next = pt->next;
+		if (pf->next)
+		    pf->next->prev = pf;
+		free(pt);
+	    }
+	} else if (pf->page == tail) {
+	    /* Prepend to entry */
+	    pf->size += l;
+	    pf->page = ptr;
+	} else if (!pf->next) {
+	    /* Append at tail of chain */
+	    px->next = 0;
+	    px->prev = pf;
+	    pf->next = px;
+	    pf = px;
+	    px = 0;
+	} else {
+	    wrterror("messed up free list");
+	}
+    }
+    
+    /* Return something to OS ? */
+    if (!pf->next &&				/* If we're the last one, */
+      pf->size > malloc_cache &&		/* ..and the cache is full, */
+      pf->end == malloc_brk &&			/* ..and none behind us, */
+      malloc_brk == sbrk(0)) {			/* ..and it's OK to do... */
+
+	/*
+	 * Keep the cache intact.  Notice that the '>' above guarantees that
+	 * the pf will always have at least one page afterwards.
+	 */
+	pf->end = pf->page + malloc_cache;
+	pf->size = malloc_cache;
+
+	brk(pf->end);
+	malloc_brk = pf->end;
+
+	index = ptr2index(pf->end);
+	last_index = index - 1;
+
+	for(i=index;i <= last_index;)
+	    page_dir[i++] = MALLOC_NOT_MINE;
+
+	/* XXX: We could realloc/shrink the pagedir here I guess. */
+    }
+}
+
+/*
+ * Free a chunk, and possibly the page it's on, if the page becomes empty.
+ */
+
+static __inline void
+free_bytes(void *ptr, int index, struct pginfo *info)
+{
+    int i;
+    struct pginfo **mp;
+    void *vp;
+
+    /* Find the chunk number on the page */
+    i = ((u_long)ptr & malloc_pagemask) >> info->shift;
+
+    if (((u_long)ptr & (info->size-1))) {
+	wrtwarning("free(): modified pointer.\n");
+	return;
+    }
+
+    if (tst_bit(info,i)) {
+	wrtwarning("free(): already free chunk.\n");
+	return;
+    }
+
+    set_bit(info,i);
+    info->free++;
+
+    mp = page_dir + info->shift;
+
+    if (info->free == 1) {
+
+	/* Page became non-full */
+
+	mp = page_dir + info->shift;
+	/* Insert in address order */
+	while (*mp && (*mp)->next && (*mp)->next->page < info->page)
+	    mp = &(*mp)->next;
+	info->next = *mp;
+	*mp = info;
+	return;
+    }
+
+    if (info->free != info->total)
+	return;
+
+    /* Find & remove this page in the queue */
+    while (*mp != info) {
+	mp = &((*mp)->next);
+#ifdef EXTRA_SANITY
+	if (!*mp)
+		wrterror("(ES): Not on queue\n");
+#endif /* EXTRA_SANITY */
+    }
+    *mp = info->next;
+
+    /* Free the page & the info structure if need be */
+    page_dir[ptr2index(info->page)] = MALLOC_FIRST;
+    vp = info->page;		/* Order is important ! */
+    if(vp != (void*)info) 
+	free(info);
+    free(vp);
+}
+
+void
+free(void *ptr)
+{
+    struct pginfo *info;
+    int index;
+
+    /* This is legal */
+    if (!ptr)
+	return;
+
+    if (!initialized) {
+	wrtwarning("free(): malloc() never got called.\n");
+	return;
+    }
+
+    /* If we're already sinking, don't make matters any worse. */
+    if (suicide)
+	return;
+
+    index = ptr2index(ptr);
+
+    if (index < malloc_pageshift) {
+	wrtwarning("free(): junk pointer (too low)\n");
+	return;
+    }
+
+    if (index > last_index) {
+	wrtwarning("free(): junk pointer (too high)\n");
+	return;
+    }
+
+    info = page_dir[index];
+
+    if (info < MALLOC_MAGIC)
+        free_pages(ptr,index,info);
+    else
+	free_bytes(ptr,index,info);
+    return;
+}
diff --git a/lib/libc/stdlib/memory.3 b/lib/libc/stdlib/memory.3
new file mode 100644
index 0000000..9bc600b
--- /dev/null
+++ b/lib/libc/stdlib/memory.3
@@ -0,0 +1,70 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)memory.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt MEMORY 3
+.Os BSD 4
+.Sh NAME
+.Nm malloc ,
+.Nm free ,
+.Nm realloc ,
+.Nm calloc ,
+.Nm alloca
+.Nd general memory allocation operations
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft void *
+.Fn malloc "size_t size"
+.Ft void
+.Fn free "void *ptr"
+.Ft void *
+.Fn realloc "void *ptr" "size_t size"
+.Ft void *
+.Fn calloc "size_t nelem" "size_t elsize"
+.Ft void *
+.Fn alloca "size_t size"
+.Sh DESCRIPTION
+These functions allocate and free memory for the calling process.
+They are described in the
+individual manual pages.
+.Sh SEE ALSO
+.Xr calloc 3 ,
+.Xr free 3 ,
+.Xr malloc 3 ,
+.Xr realloc 3 ,
+.Xr alloca 3 ,
+.Sh STANDARDS
+These functions, with the exception of
+.Fn alloca
+conform to
+.St -ansiC .
diff --git a/lib/libc/stdlib/merge.c b/lib/libc/stdlib/merge.c
new file mode 100644
index 0000000..a47e300
--- /dev/null
+++ b/lib/libc/stdlib/merge.c
@@ -0,0 +1,347 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Peter McIlroy.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)merge.c	8.2 (Berkeley) 2/14/94";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Hybrid exponential search/linear search merge sort with hybrid
+ * natural/pairwise first pass.  Requires about .3% more comparisons
+ * for random data than LSMS with pairwise first pass alone.
+ * It works for objects as small as two bytes.
+ */
+
+#define NATURAL
+#define THRESHOLD 16	/* Best choice for natural merge cut-off. */
+
+/* #define NATURAL to get hybrid natural merge.
+ * (The default is pairwise merging.)
+ */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+static void setup __P((u_char *, u_char *, size_t, size_t, int (*)()));
+static void insertionsort __P((u_char *, size_t, size_t, int (*)()));
+
+#define ISIZE sizeof(int)
+#define PSIZE sizeof(u_char *)
+#define ICOPY_LIST(src, dst, last)				\
+	do							\
+	*(int*)dst = *(int*)src, src += ISIZE, dst += ISIZE;	\
+	while(src < last)
+#define ICOPY_ELT(src, dst, i)					\
+	do							\
+	*(int*) dst = *(int*) src, src += ISIZE, dst += ISIZE;	\
+	while (i -= ISIZE)
+
+#define CCOPY_LIST(src, dst, last)		\
+	do					\
+		*dst++ = *src++;		\
+	while (src < last)
+#define CCOPY_ELT(src, dst, i)			\
+	do					\
+		*dst++ = *src++;		\
+	while (i -= 1)
+
+/*
+ * Find the next possible pointer head.  (Trickery for forcing an array
+ * to do double duty as a linked list when objects do not align with word
+ * boundaries.
+ */
+/* Assumption: PSIZE is a power of 2. */
+#define EVAL(p) (u_char **)						\
+	((u_char *)0 +							\
+	    (((u_char *)p + PSIZE - 1 - (u_char *) 0) & ~(PSIZE - 1)))
+
+/*
+ * Arguments are as for qsort.
+ */
+int
+mergesort(base, nmemb, size, cmp)
+	void *base;
+	size_t nmemb;
+	register size_t size;
+	int (*cmp) __P((const void *, const void *));
+{
+	register int i, sense;
+	int big, iflag;
+	register u_char *f1, *f2, *t, *b, *tp2, *q, *l1, *l2;
+	u_char *list2, *list1, *p2, *p, *last, **p1;
+
+	if (size < PSIZE / 2) {		/* Pointers must fit into 2 * size. */
+		errno = EINVAL;
+		return (-1);
+	}
+
+	/*
+	 * XXX
+	 * Stupid subtraction for the Cray.
+	 */
+	iflag = 0;
+	if (!(size % ISIZE) && !(((char *)base - (char *)0) % ISIZE))
+		iflag = 1;
+
+	if ((list2 = malloc(nmemb * size + PSIZE)) == NULL)
+		return (-1);
+
+	list1 = base;
+	setup(list1, list2, nmemb, size, cmp);
+	last = list2 + nmemb * size;
+	i = big = 0;
+	while (*EVAL(list2) != last) {
+	    l2 = list1;
+	    p1 = EVAL(list1);
+	    for (tp2 = p2 = list2; p2 != last; p1 = EVAL(l2)) {
+	    	p2 = *EVAL(p2);
+	    	f1 = l2;
+	    	f2 = l1 = list1 + (p2 - list2);
+	    	if (p2 != last)
+	    		p2 = *EVAL(p2);
+	    	l2 = list1 + (p2 - list2);
+	    	while (f1 < l1 && f2 < l2) {
+	    		if ((*cmp)(f1, f2) <= 0) {
+	    			q = f2;
+	    			b = f1, t = l1;
+	    			sense = -1;
+	    		} else {
+	    			q = f1;
+	    			b = f2, t = l2;
+	    			sense = 0;
+	    		}
+	    		if (!big) {	/* here i = 0 */
+LINEAR:	    			while ((b += size) < t && cmp(q, b) >sense)
+	    				if (++i == 6) {
+	    					big = 1;
+	    					goto EXPONENTIAL;
+	    				}
+	    		} else {
+EXPONENTIAL:	    		for (i = size; ; i <<= 1)
+	    				if ((p = (b + i)) >= t) {
+	    					if ((p = t - size) > b &&
+						    (*cmp)(q, p) <= sense)
+	    						t = p;
+	    					else
+	    						b = p;
+	    					break;
+	    				} else if ((*cmp)(q, p) <= sense) {
+	    					t = p;
+	    					if (i == size)
+	    						big = 0;
+	    					goto FASTCASE;
+	    				} else
+	    					b = p;
+SLOWCASE:	    		while (t > b+size) {
+	    				i = (((t - b) / size) >> 1) * size;
+	    				if ((*cmp)(q, p = b + i) <= sense)
+	    					t = p;
+	    				else
+	    					b = p;
+	    			}
+	    			goto COPY;
+FASTCASE:	    		while (i > size)
+	    				if ((*cmp)(q,
+	    					p = b + (i >>= 1)) <= sense)
+	    					t = p;
+	    				else
+	    					b = p;
+COPY:	    			b = t;
+	    		}
+	    		i = size;
+	    		if (q == f1) {
+	    			if (iflag) {
+	    				ICOPY_LIST(f2, tp2, b);
+	    				ICOPY_ELT(f1, tp2, i);
+	    			} else {
+	    				CCOPY_LIST(f2, tp2, b);
+	    				CCOPY_ELT(f1, tp2, i);
+	    			}
+	    		} else {
+	    			if (iflag) {
+	    				ICOPY_LIST(f1, tp2, b);
+	    				ICOPY_ELT(f2, tp2, i);
+	    			} else {
+	    				CCOPY_LIST(f1, tp2, b);
+	    				CCOPY_ELT(f2, tp2, i);
+	    			}
+	    		}
+	    	}
+	    	if (f2 < l2) {
+	    		if (iflag)
+	    			ICOPY_LIST(f2, tp2, l2);
+	    		else
+	    			CCOPY_LIST(f2, tp2, l2);
+	    	} else if (f1 < l1) {
+	    		if (iflag)
+	    			ICOPY_LIST(f1, tp2, l1);
+	    		else
+	    			CCOPY_LIST(f1, tp2, l1);
+	    	}
+	    	*p1 = l2;
+	    }
+	    tp2 = list1;	/* swap list1, list2 */
+	    list1 = list2;
+	    list2 = tp2;
+	    last = list2 + nmemb*size;
+	}
+	if (base == list2) {
+		memmove(list2, list1, nmemb*size);
+		list2 = list1;
+	}
+	free(list2);
+	return (0);
+}
+
+#define	swap(a, b) {					\
+		s = b;					\
+		i = size;				\
+		do {					\
+			tmp = *a; *a++ = *s; *s++ = tmp; \
+		} while (--i);				\
+		a -= size;				\
+	}
+#define reverse(bot, top) {				\
+	s = top;					\
+	do {						\
+		i = size;				\
+		do {					\
+			tmp = *bot; *bot++ = *s; *s++ = tmp; \
+		} while (--i);				\
+		s -= size2;				\
+	} while(bot < s);				\
+}
+
+/*
+ * Optional hybrid natural/pairwise first pass.  Eats up list1 in runs of
+ * increasing order, list2 in a corresponding linked list.  Checks for runs
+ * when THRESHOLD/2 pairs compare with same sense.  (Only used when NATURAL
+ * is defined.  Otherwise simple pairwise merging is used.)
+ */
+void
+setup(list1, list2, n, size, cmp)
+	size_t n, size;
+	int (*cmp) __P((const void *, const void *));
+	u_char *list1, *list2;
+{
+	int i, length, size2, tmp, sense;
+	u_char *f1, *f2, *s, *l2, *last, *p2;
+
+	size2 = size*2;
+	if (n <= 5) {
+		insertionsort(list1, n, size, cmp);
+		*EVAL(list2) = (u_char*) list2 + n*size;
+		return;
+	}
+	/*
+	 * Avoid running pointers out of bounds; limit n to evens
+	 * for simplicity.
+	 */
+	i = 4 + (n & 1);
+	insertionsort(list1 + (n - i) * size, i, size, cmp);
+	last = list1 + size * (n - i);
+	*EVAL(list2 + (last - list1)) = list2 + n * size;
+
+#ifdef NATURAL
+	p2 = list2;
+	f1 = list1;
+	sense = (cmp(f1, f1 + size) > 0);
+	for (; f1 < last; sense = !sense) {
+		length = 2;
+					/* Find pairs with same sense. */
+		for (f2 = f1 + size2; f2 < last; f2 += size2) {
+			if ((cmp(f2, f2+ size) > 0) != sense)
+				break;
+			length += 2;
+		}
+		if (length < THRESHOLD) {		/* Pairwise merge */
+			do {
+				p2 = *EVAL(p2) = f1 + size2 - list1 + list2;
+				if (sense > 0)
+					swap (f1, f1 + size);
+			} while ((f1 += size2) < f2);
+		} else {				/* Natural merge */
+			l2 = f2;
+			for (f2 = f1 + size2; f2 < l2; f2 += size2) {
+				if ((cmp(f2-size, f2) > 0) != sense) {
+					p2 = *EVAL(p2) = f2 - list1 + list2;
+					if (sense > 0)
+						reverse(f1, f2-size);
+					f1 = f2;
+				}
+			}
+			if (sense > 0)
+				reverse (f1, f2-size);
+			f1 = f2;
+			if (f2 < last || cmp(f2 - size, f2) > 0)
+				p2 = *EVAL(p2) = f2 - list1 + list2;
+			else
+				p2 = *EVAL(p2) = list2 + n*size;
+		}
+	}
+#else		/* pairwise merge only. */
+	for (f1 = list1, p2 = list2; f1 < last; f1 += size2) {
+		p2 = *EVAL(p2) = p2 + size2;
+		if (cmp (f1, f1 + size) > 0)
+			swap(f1, f1 + size);
+	}
+#endif /* NATURAL */
+}
+
+/*
+ * This is to avoid out-of-bounds addresses in sorting the
+ * last 4 elements.
+ */
+static void
+insertionsort(a, n, size, cmp)
+	u_char *a;
+	size_t n, size;
+	int (*cmp) __P((const void *, const void *));
+{
+	u_char *ai, *s, *t, *u, tmp;
+	int i;
+
+	for (ai = a+size; --n >= 1; ai += size)
+		for (t = ai; t > a; t -= size) {
+			u = t - size;
+			if (cmp(u, t) <= 0)
+				break;
+			swap(u, t);
+		}
+}
diff --git a/lib/libc/stdlib/putenv.c b/lib/libc/stdlib/putenv.c
new file mode 100644
index 0000000..eb5e805
--- /dev/null
+++ b/lib/libc/stdlib/putenv.c
@@ -0,0 +1,58 @@
+/*-
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)putenv.c	8.2 (Berkeley) 3/27/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdlib.h>
+#include <string.h>
+
+int
+putenv(str)
+	const char *str;
+{
+	char *p, *equal;
+	int rval;
+
+	if ((p = strdup(str)) == NULL)
+		return (-1);
+	if ((equal = index(p, '=')) == NULL) {
+		(void)free(p);
+		return (-1);
+	}
+	*equal = '\0';
+	rval = setenv(p, equal + 1, 1);
+	(void)free(p);
+	return (rval);
+}
diff --git a/lib/libc/stdlib/qsort.3 b/lib/libc/stdlib/qsort.3
new file mode 100644
index 0000000..4f449c7
--- /dev/null
+++ b/lib/libc/stdlib/qsort.3
@@ -0,0 +1,233 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)qsort.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt QSORT 3
+.Os
+.Sh NAME
+.Nm qsort, heapsort, mergesort
+.Nd sort functions
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft void
+.Fn qsort "void *base" "size_t nmemb" "size_t size" "int (*compar)(const void *, const void *)"
+.Ft int
+.Fn heapsort "void *base" "size_t nmemb" "size_t size" "int (*compar)(const void *, const void *)"
+.Ft int
+.Fn mergesort "void *base" "size_t nmemb" "size_t size" "int (*compar)(const void *, const void *)"
+.Sh DESCRIPTION
+The
+.Fn qsort
+function is a modified partition-exchange sort, or quicksort.
+The
+.Fn heapsort
+function is a modified selection sort.
+The
+.Fn mergesort
+function is a modified merge sort with exponential search
+intended for sorting data with pre-existing order.
+.Pp
+The
+.Fn qsort
+and
+.Fn heapsort
+functions sort an array of
+.Fa nmemb
+objects, the initial member of which is pointed to by
+.Fa base .
+The size of each object is specified by
+.Fa size .
+.Fn Mergesort
+behaves similarly, but
+.Em requires
+that
+.Fa size
+be greater than
+.Dq "sizeof(void *) / 2" .
+.Pp
+The contents of the array
+.Fa base
+are sorted in ascending order according to
+a comparison function pointed to by
+.Fa compar ,
+which requires two arguments pointing to the objects being
+compared.
+.Pp
+The comparison function must return an integer less than, equal to, or
+greater than zero if the first argument is considered to be respectively
+less than, equal to, or greater than the second.
+.Pp
+The functions
+.Fn qsort
+and
+.Fn heapsort
+are
+.Em not
+stable, that is, if two members compare as equal, their order in
+the sorted array is undefined.
+The function
+.Fn mergesort
+is stable.
+.Pp
+The
+.Fn qsort
+function is an implementation of C.A.R. Hoare's ``quicksort'' algorithm,
+a variant of partition-exchange sorting; in particular, see D.E. Knuth's
+Algorithm Q.
+.Fn Qsort
+takes O N lg N average time.
+This implementation uses median selection to avoid its
+O N**2 worst-case behavior.
+.Pp
+The
+.Fn heapsort
+function is an implementation of J.W.J. William's ``heapsort'' algorithm,
+a variant of selection sorting; in particular, see D.E. Knuth's Algorithm H.
+.Fn Heapsort
+takes O N lg N worst-case time.
+Its
+.Em only
+advantage over
+.Fn qsort
+is that it uses almost no additional memory; while
+.Fn qsort
+does not allocate memory, it is implemented using recursion.
+.Pp
+The function
+.Fn mergesort
+requires additional memory of size
+.Fa nmemb *
+.Fa size 
+bytes; it should be used only when space is not at a premium.
+.Fn Mergesort
+is optimized for data with pre-existing order; its worst case
+time is O N lg N; its best case is O N.
+.Pp
+Normally,
+.Fn qsort
+is faster than
+.Fn mergesort
+is faster than
+.Fn heapsort .
+Memory availability and pre-existing order in the data can make this
+untrue.
+.Sh RETURN VALUES
+The
+.Fn qsort
+function
+returns no value.
+.Pp
+Upon successful completion,
+.Fn heapsort
+and
+.Fn mergesort
+return 0.
+Otherwise, they return \-1 and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+The
+.Fn heapsort
+function succeeds unless:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The
+.Fa size
+argument is zero, or,
+the
+.Fa size
+argument to
+.Fn mergesort
+is less than
+.Dq "sizeof(void *) / 2" .
+.It Bq Er ENOMEM
+.Fn Heapsort
+or
+.Fn mergesort
+were unable to allocate memory.
+.El
+.Sh COMPATIBILITY
+Previous versions of
+.Fn qsort
+did not permit the comparison routine itself to call
+.Fn qsort 3 .
+This is no longer true.
+.Sh SEE ALSO
+.Xr sort 1 ,
+.Xr radixsort 3
+.Rs
+.%A Hoare, C.A.R.
+.%D 1962
+.%T "Quicksort"
+.%J "The Computer Journal"
+.%V 5:1
+.%P pp. 10-15
+.Re
+.Rs
+.%A Williams, J.W.J
+.%D 1964
+.%T "Heapsort"
+.%J "Communications of the ACM"
+.%V 7:1
+.%P pp. 347-348
+.Re
+.Rs
+.%A Knuth, D.E.
+.%D 1968
+.%B "The Art of Computer Programming"
+.%V Vol. 3
+.%T "Sorting and Searching"
+.%P pp. 114-123, 145-149
+.Re
+.Rs
+.%A Mcilroy, P.M.
+.%T "Optimistic Sorting and Information Theoretic Complexity"
+.%J "Fourth Annual ACM-SIAM Symposium on Discrete Algorithms"
+.%V January 1992
+.Re
+.Rs
+.%A Bentley, J.L.
+.%T "Engineering a Sort Function"
+.%J "bentley@research.att.com"
+.%V January 1992
+.Re
+.Sh STANDARDS
+The
+.Fn qsort
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/stdlib/qsort.c b/lib/libc/stdlib/qsort.c
new file mode 100644
index 0000000..66c0224
--- /dev/null
+++ b/lib/libc/stdlib/qsort.c
@@ -0,0 +1,179 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)qsort.c	8.1 (Berkeley) 6/4/93";
+#endif
+static const char rcsid[] =
+	"$Id$";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <stdlib.h>
+
+typedef int		 cmp_t __P((const void *, const void *));
+static inline char	*med3 __P((char *, char *, char *, cmp_t *));
+static inline void	 swapfunc __P((char *, char *, int, int));
+
+#define min(a, b)	(a) < (b) ? a : b
+
+/*
+ * Qsort routine from Bentley & McIlroy's "Engineering a Sort Function".
+ */
+#define swapcode(TYPE, parmi, parmj, n) { 		\
+	long i = (n) / sizeof (TYPE); 			\
+	register TYPE *pi = (TYPE *) (parmi); 		\
+	register TYPE *pj = (TYPE *) (parmj); 		\
+	do { 						\
+		register TYPE	t = *pi;		\
+		*pi++ = *pj;				\
+		*pj++ = t;				\
+        } while (--i > 0);				\
+}
+
+#define SWAPINIT(a, es) swaptype = ((char *)a - (char *)0) % sizeof(long) || \
+	es % sizeof(long) ? 2 : es == sizeof(long)? 0 : 1;
+
+static inline void
+swapfunc(a, b, n, swaptype)
+	char *a, *b;
+	int n, swaptype;
+{
+	if(swaptype <= 1)
+		swapcode(long, a, b, n)
+	else
+		swapcode(char, a, b, n)
+}
+
+#define swap(a, b)					\
+	if (swaptype == 0) {				\
+		long t = *(long *)(a);			\
+		*(long *)(a) = *(long *)(b);		\
+		*(long *)(b) = t;			\
+	} else						\
+		swapfunc(a, b, es, swaptype)
+
+#define vecswap(a, b, n) 	if ((n) > 0) swapfunc(a, b, n, swaptype)
+
+static inline char *
+med3(a, b, c, cmp)
+	char *a, *b, *c;
+	cmp_t *cmp;
+{
+	return cmp(a, b) < 0 ?
+	       (cmp(b, c) < 0 ? b : (cmp(a, c) < 0 ? c : a ))
+              :(cmp(b, c) > 0 ? b : (cmp(a, c) < 0 ? a : c ));
+}
+
+void
+qsort(a, n, es, cmp)
+	void *a;
+	size_t n, es;
+	cmp_t *cmp;
+{
+	char *pa, *pb, *pc, *pd, *pl, *pm, *pn;
+	int d, r, swaptype, swap_cnt;
+
+loop:	SWAPINIT(a, es);
+	swap_cnt = 0;
+	if (n < 7) {
+		for (pm = a + es; pm < (char *) a + n * es; pm += es)
+			for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0;
+			     pl -= es)
+				swap(pl, pl - es);
+		return;
+	}
+	pm = a + (n / 2) * es;
+	if (n > 7) {
+		pl = a;
+		pn = a + (n - 1) * es;
+		if (n > 40) {
+			d = (n / 8) * es;
+			pl = med3(pl, pl + d, pl + 2 * d, cmp);
+			pm = med3(pm - d, pm, pm + d, cmp);
+			pn = med3(pn - 2 * d, pn - d, pn, cmp);
+		}
+		pm = med3(pl, pm, pn, cmp);
+	}
+	swap(a, pm);
+	pa = pb = a + es;
+
+	pc = pd = a + (n - 1) * es;
+	for (;;) {
+		while (pb <= pc && (r = cmp(pb, a)) <= 0) {
+			if (r == 0) {
+				swap_cnt = 1;
+				swap(pa, pb);
+				pa += es;
+			}
+			pb += es;
+		}
+		while (pb <= pc && (r = cmp(pc, a)) >= 0) {
+			if (r == 0) {
+				swap_cnt = 1;
+				swap(pc, pd);
+				pd -= es;
+			}
+			pc -= es;
+		}
+		if (pb > pc)
+			break;
+		swap(pb, pc);
+		swap_cnt = 1;
+		pb += es;
+		pc -= es;
+	}
+	if (swap_cnt == 0) {  /* Switch to insertion sort */
+		for (pm = a + es; pm < (char *) a + n * es; pm += es)
+			for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0;
+			     pl -= es)
+				swap(pl, pl - es);
+		return;
+	}
+
+	pn = a + n * es;
+	r = min(pa - (char *)a, pb - pa);
+	vecswap(a, pb - r, r);
+	r = min(pd - pc, pn - pd - es);
+	vecswap(pb, pn - r, r);
+	if ((r = pb - pa) > es)
+		qsort(a, r / es, es, cmp);
+	if ((r = pd - pc) > es) {
+		/* Iterate rather than recurse to save stack space */
+		a = pn - r;
+		n = r / es;
+		goto loop;
+	}
+/*		qsort(pn - r, r / es, es, cmp);*/
+}
diff --git a/lib/libc/stdlib/radixsort.3 b/lib/libc/stdlib/radixsort.3
new file mode 100644
index 0000000..ce30378
--- /dev/null
+++ b/lib/libc/stdlib/radixsort.3
@@ -0,0 +1,160 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)radixsort.3	8.2 (Berkeley) 1/27/94
+.\"
+.Dd January 27, 1994
+.Dt RADIXSORT 3
+.Os
+.Sh NAME
+.Nm radixsort
+.Nd radix sort
+.Sh SYNOPSIS
+.Fd #include <limits.h>
+.Fd #include <stdlib.h>
+.Ft int
+.Fn radixsort "u_char **base" "int nmemb" "u_char *table" "u_int endbyte"
+.Ft int
+.Fn sradixsort "u_char **base" "int nmemb" "u_char *table" "u_int endbyte"
+.Sh DESCRIPTION
+The
+.Fn radixsort
+and
+.Fn sradixsort
+functions
+are implementations of radix sort.
+.Pp
+These functions sort an array of pointers to byte strings, the initial
+member of which is referenced by
+.Fa base .
+The byte strings may contain any values; the end of each string
+is denoted by the user-specified value
+.Fa endbyte .
+.Pp
+Applications may specify a sort order by providing the
+.Fa table
+argument.
+If
+.Pf non- Dv NULL , 
+.Fa table
+must reference an array of
+.Dv UCHAR_MAX
++ 1 bytes which contains the sort
+weight of each possible byte value.
+The end-of-string byte must have a sort weight of 0 or 255
+(for sorting in reverse order).
+More than one byte may have the same sort weight.
+The
+.Fa table
+argument
+is useful for applications which wish to sort different characters
+equally, for example, providing a table with the same weights
+for A-Z as for a-z will result in a case-insensitive sort.
+If
+.Fa table
+is NULL, the contents of the array are sorted in ascending order
+according to the
+.Tn ASCII
+order of the byte strings they reference and
+.Fa endbyte
+has a sorting weight of 0.
+.Pp
+The
+.Fn sradixsort
+function is stable, that is, if two elements compare as equal, their
+order in the sorted array is unchanged.
+The
+.Fn sradixsort
+function uses additional memory sufficient to hold
+.Fa nmemb
+pointers.
+.Pp
+The
+.Fn radixsort
+function is not stable, but uses no additional memory.
+.Pp
+These functions are variants of most-significant-byte radix sorting; in
+particular, see D.E. Knuth's Algorithm R and section 5.2.5, exercise 10.
+They take linear time relative to the number of bytes in the strings.
+.Sh RETURN VALUES
+Upon successful completion 0 is returned.
+Otherwise, \-1 is returned and the global variable 
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value of the
+.Fa endbyte
+element of
+.Fa table
+is not 0 or 255.
+.El
+.Pp
+Additionally, the
+.Fn sradixsort
+function
+may fail and set
+.Va errno
+for any of the errors specified for the library routine
+.Xr malloc 3 .
+.Sh SEE ALSO
+.Xr sort 1 ,
+.Xr qsort 3
+.Pp
+.Rs
+.%A Knuth, D.E.
+.%D 1968
+.%B "The Art of Computer Programming"
+.%T "Sorting and Searching"
+.%V Vol. 3
+.%P pp. 170-178
+.Re
+.Rs
+.%A Paige, R.
+.%D 1987
+.%T "Three Partition Refinement Algorithms"
+.%J "SIAM J. Comput."
+.%V Vol. 16
+.%N No. 6
+.Re
+.Rs
+.%A McIlroy, P.
+.%D 1993
+.%B "Engineering Radix Sort"
+.%T "Computing Systems"
+.%V Vol. 6:1
+.%P pp. 5-27
+.Re
+.Sh HISTORY
+The
+.Fn radixsort
+function first appeared in 4.4BSD.
diff --git a/lib/libc/stdlib/radixsort.c b/lib/libc/stdlib/radixsort.c
new file mode 100644
index 0000000..af47fb0
--- /dev/null
+++ b/lib/libc/stdlib/radixsort.c
@@ -0,0 +1,318 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Peter McIlroy and by Dan Bernstein at New York University,
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)radixsort.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Radixsort routines.
+ *
+ * Program r_sort_a() is unstable but uses O(logN) extra memory for a stack.
+ * Use radixsort(a, n, trace, endchar) for this case.
+ *
+ * For stable sorting (using N extra pointers) use sradixsort(), which calls
+ * r_sort_b().
+ *
+ * For a description of this code, see D. McIlroy, P. McIlroy, K. Bostic,
+ * "Engineering Radix Sort".
+ */
+
+#include <sys/types.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <errno.h>
+
+typedef struct {
+	const u_char **sa;
+	int sn, si;
+} stack;
+
+static inline void simplesort
+	    __P((const u_char **, int, int, const u_char *, u_int));
+static void r_sort_a __P((const u_char **, int, int, const u_char *, u_int));
+static void r_sort_b __P((const u_char **,
+	    const u_char **, int, int, const u_char *, u_int));
+
+#define	THRESHOLD	20		/* Divert to simplesort(). */
+#define	SIZE		512		/* Default stack size. */
+
+#define SETUP {								\
+	if (tab == NULL) {						\
+		tr = tr0;						\
+		for (c = 0; c < endch; c++)				\
+			tr0[c] = c + 1;					\
+		tr0[c] = 0;						\
+		for (c++; c < 256; c++)					\
+			tr0[c] = c;					\
+		endch = 0;						\
+	} else {							\
+		endch = tab[endch];					\
+		tr = tab;						\
+		if (endch != 0 && endch != 255) {			\
+			errno = EINVAL;					\
+			return (-1);					\
+		}							\
+	}								\
+}
+
+int
+radixsort(a, n, tab, endch)
+	const u_char **a, *tab;
+	int n;
+	u_int endch;
+{
+	const u_char *tr;
+	int c;
+	u_char tr0[256];
+
+	SETUP;
+	r_sort_a(a, n, 0, tr, endch);
+	return (0);
+}
+
+int
+sradixsort(a, n, tab, endch)
+	const u_char **a, *tab;
+	int n;
+	u_int endch;
+{
+	const u_char *tr, **ta;
+	int c;
+	u_char tr0[256];
+
+	SETUP;
+	if (n < THRESHOLD)
+		simplesort(a, n, 0, tr, endch);
+	else {
+		if ((ta = malloc(n * sizeof(a))) == NULL)
+			return (-1);
+		r_sort_b(a, ta, n, 0, tr, endch);
+		free(ta);
+	}
+	return (0);
+}
+
+#define empty(s)	(s >= sp)
+#define pop(a, n, i)	a = (--sp)->sa, n = sp->sn, i = sp->si
+#define push(a, n, i)	sp->sa = a, sp->sn = n, (sp++)->si = i
+#define swap(a, b, t)	t = a, a = b, b = t
+
+/* Unstable, in-place sort. */
+void
+r_sort_a(a, n, i, tr, endch)
+	const u_char **a;
+	int n, i;
+	const u_char *tr;
+	u_int endch;
+{
+	static int count[256], nc, bmin;
+	register int c;
+	register const u_char **ak, *r;
+	stack s[SIZE], *sp, *sp0, *sp1, temp;
+	int *cp, bigc;
+	const u_char **an, *t, **aj, **top[256];
+
+	/* Set up stack. */
+	sp = s;
+	push(a, n, i);
+	while (!empty(s)) {
+		pop(a, n, i);
+		if (n < THRESHOLD) {
+			simplesort(a, n, i, tr, endch);
+			continue;
+		}
+		an = a + n;
+
+		/* Make character histogram. */
+		if (nc == 0) {
+			bmin = 255;	/* First occupied bin, excluding eos. */
+			for (ak = a; ak < an;) {
+				c = tr[(*ak++)[i]];
+				if (++count[c] == 1 && c != endch) {
+					if (c < bmin)
+						bmin = c;
+					nc++;
+				}
+			}
+			if (sp + nc > s + SIZE) {	/* Get more stack. */
+				r_sort_a(a, n, i, tr, endch);
+				continue;
+			}
+		}
+
+		/*
+		 * Set top[]; push incompletely sorted bins onto stack.
+		 * top[] = pointers to last out-of-place element in bins.
+		 * count[] = counts of elements in bins.
+		 * Before permuting: top[c-1] + count[c] = top[c];
+		 * during deal: top[c] counts down to top[c-1].
+		 */
+		sp0 = sp1 = sp;		/* Stack position of biggest bin. */
+		bigc = 2;		/* Size of biggest bin. */
+		if (endch == 0)		/* Special case: set top[eos]. */
+			top[0] = ak = a + count[0];
+		else {
+			ak = a;
+			top[255] = an;
+		}
+		for (cp = count + bmin; nc > 0; cp++) {
+			while (*cp == 0)	/* Find next non-empty pile. */
+				cp++;
+			if (*cp > 1) {
+				if (*cp > bigc) {
+					bigc = *cp;
+					sp1 = sp;
+				}
+				push(ak, *cp, i+1);
+			}
+			top[cp-count] = ak += *cp;
+			nc--;
+		}
+		swap(*sp0, *sp1, temp);	/* Play it safe -- biggest bin last. */
+
+		/*
+		 * Permute misplacements home.  Already home: everything
+		 * before aj, and in bin[c], items from top[c] on.
+		 * Inner loop:
+		 *	r = next element to put in place;
+		 *	ak = top[r[i]] = location to put the next element.
+		 *	aj = bottom of 1st disordered bin.
+		 * Outer loop:
+		 *	Once the 1st disordered bin is done, ie. aj >= ak,
+		 *	aj<-aj + count[c] connects the bins in a linked list;
+		 *	reset count[c].
+		 */
+		for (aj = a; aj < an;  *aj = r, aj += count[c], count[c] = 0)
+			for (r = *aj;  aj < (ak = --top[c = tr[r[i]]]);)
+				swap(*ak, r, t);
+	}
+}
+
+/* Stable sort, requiring additional memory. */
+void
+r_sort_b(a, ta, n, i, tr, endch)
+	const u_char **a, **ta;
+	int n, i;
+	const u_char *tr;
+	u_int endch;
+{
+	static int count[256], nc, bmin;
+	register int c;
+	register const u_char **ak, **ai;
+	stack s[512], *sp, *sp0, *sp1, temp;
+	const u_char **top[256];
+	int *cp, bigc;
+
+	sp = s;
+	push(a, n, i);
+	while (!empty(s)) {
+		pop(a, n, i);
+		if (n < THRESHOLD) {
+			simplesort(a, n, i, tr, endch);
+			continue;
+		}
+
+		if (nc == 0) {
+			bmin = 255;
+			for (ak = a + n; --ak >= a;) {
+				c = tr[(*ak)[i]];
+				if (++count[c] == 1 && c != endch) {
+					if (c < bmin)
+						bmin = c;
+					nc++;
+				}
+			}
+			if (sp + nc > s + SIZE) {
+				r_sort_b(a, ta, n, i, tr, endch);
+				continue;
+			}
+		}
+
+		sp0 = sp1 = sp;
+		bigc = 2;
+		if (endch == 0) {
+			top[0] = ak = a + count[0];
+			count[0] = 0;
+		} else {
+			ak = a;
+			top[255] = a + n;
+			count[255] = 0;
+		}
+		for (cp = count + bmin; nc > 0; cp++) {
+			while (*cp == 0)
+				cp++;
+			if ((c = *cp) > 1) {
+				if (c > bigc) {
+					bigc = c;
+					sp1 = sp;
+				}
+				push(ak, c, i+1);
+			}
+			top[cp-count] = ak += c;
+			*cp = 0;			/* Reset count[]. */
+			nc--;
+		}
+		swap(*sp0, *sp1, temp);
+
+		for (ak = ta + n, ai = a+n; ak > ta;)	/* Copy to temp. */
+			*--ak = *--ai;
+		for (ak = ta+n; --ak >= ta;)		/* Deal to piles. */
+			*--top[tr[(*ak)[i]]] = *ak;
+	}
+}
+
+static inline void
+simplesort(a, n, b, tr, endch)	/* insertion sort */
+	register const u_char **a;
+	int n, b;
+	register const u_char *tr;
+	u_int endch;
+{
+	register u_char ch;
+	const u_char  **ak, **ai, *s, *t;
+
+	for (ak = a+1; --n >= 1; ak++)
+		for (ai = ak; ai > a; ai--) {
+			for (s = ai[0] + b, t = ai[-1] + b;
+			    (ch = tr[*s]) != endch; s++, t++)
+				if (ch != tr[*t])
+					break;
+			if (ch >= tr[*t])
+				break;
+			swap(ai[0], ai[-1], s);
+		}
+}
diff --git a/lib/libc/stdlib/rand.3 b/lib/libc/stdlib/rand.3
new file mode 100644
index 0000000..f2e3742
--- /dev/null
+++ b/lib/libc/stdlib/rand.3
@@ -0,0 +1,84 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)rand.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt RAND 3
+.Os
+.Sh NAME
+.Nm rand ,
+.Nm srand
+.Nd bad random number generator
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft void
+.Fn srand "unsigned seed"
+.Ft int
+.Fn rand void
+.Sh DESCRIPTION
+.Bf -symbolic
+These interfaces are obsoleted by random(3).
+.Ef
+.Pp
+The
+.Fn rand
+function computes a sequence of pseudo-random integers in the range
+of 0 to
+.Dv RAND_MAX
+(as defined by the header file
+.Aq Pa stdlib.h ) .
+.Pp
+The
+.Fn srand
+function sets its argument as the seed for a new sequence of
+pseudo-random numbers to be returned by
+.Fn rand .
+These sequences are repeatable by calling
+.Fn srand
+with the same seed value.
+.Pp
+If no seed value is provided, the functions are automatically
+seeded with a value of 1.
+.Sh SEE ALSO
+.Xr random 3
+.Sh STANDARDS
+The
+.Fn rand
+and
+.Fn srand
+functions
+conform to
+.St -ansiC .
diff --git a/lib/libc/stdlib/rand.c b/lib/libc/stdlib/rand.c
new file mode 100644
index 0000000..12846c3
--- /dev/null
+++ b/lib/libc/stdlib/rand.c
@@ -0,0 +1,54 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rand.c	8.1 (Berkeley) 6/14/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <stdlib.h>
+
+static u_long next = 1;
+
+int
+rand()
+{
+	return ((next = next * 1103515245 + 12345) % ((u_long)RAND_MAX + 1));
+}
+
+void
+srand(seed)
+u_int seed;
+{
+	next = seed;
+}
diff --git a/lib/libc/stdlib/random.3 b/lib/libc/stdlib/random.3
new file mode 100644
index 0000000..84680e2
--- /dev/null
+++ b/lib/libc/stdlib/random.3
@@ -0,0 +1,166 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)random.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt RANDOM 3
+.Os BSD 4.2
+.Sh NAME
+.Nm random ,
+.Nm srandom ,
+.Nm initstate ,
+.Nm setstate
+.Nd better random number generator; routines for changing generators
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft long 
+.Fn random void
+.Ft void
+.Fn srandom "unsigned seed"
+.Ft char *
+.Fn initstate "unsigned seed" "char *state" "int n"
+.Ft char *
+.Fn setstate "char *state"
+.Sh DESCRIPTION
+The
+.Fn random
+function
+uses a non-linear additive feedback random number generator employing a
+default table of size 31 long integers to return successive pseudo-random
+numbers in the range from 0 to
+.if t 2\u\s731\s10\d\(mi1.
+.if n (2**31)\(mi1.
+The period of this random number generator is very large, approximately
+.if t 16\(mu(2\u\s731\s10\d\(mi1).
+.if n 16*((2**31)\(mi1).
+.Pp
+The
+.Fn random Ns / Fn srandom
+have (almost) the same calling sequence and initialization properties as
+.Xr rand 3 Ns / Xr srand 3 .
+The difference is that
+.Xr rand
+produces a much less random sequence \(em in fact, the low dozen bits
+generated by rand go through a cyclic pattern.  All the bits generated by
+.Fn random
+are usable.  For example,
+.Sq Li random()&01
+will produce a random binary
+value.
+.Pp
+Unlike
+.Xr srand ,
+.Fn srandom
+does not return the old seed; the reason for this is that the amount of
+state information used is much more than a single word.  (Two other
+routines are provided to deal with restarting/changing random
+number generators).  Like
+.Xr rand 3 ,
+however,
+.Fn random
+will by default produce a sequence of numbers that can be duplicated
+by calling
+.Fn srandom
+with 
+.Ql 1
+as the seed.
+.Pp
+The
+.Fn initstate
+routine allows a state array, passed in as an argument, to be initialized
+for future use.  The size of the state array (in bytes) is used by
+.Fn initstate
+to decide how sophisticated a random number generator it should use \(em the
+more state, the better the random numbers will be.
+(Current "optimal" values for the amount of state information are
+8, 32, 64, 128, and 256 bytes; other amounts will be rounded down to
+the nearest known amount.  Using less than 8 bytes will cause an error.)
+The seed for the initialization (which specifies a starting point for
+the random number sequence, and provides for restarting at the same
+point) is also an argument.
+The
+.Fn initstate
+function
+returns a pointer to the previous state information array.
+.Pp
+Once a state has been initialized, the
+.Fn setstate
+routine provides for rapid switching between states.
+The
+.Fn setstate
+function
+returns a pointer to the previous state array; its
+argument state array is used for further random number generation
+until the next call to
+.Fn initstate
+or
+.Fn setstate .
+.Pp
+Once a state array has been initialized, it may be restarted at a
+different point either by calling
+.Fn initstate
+(with the desired seed, the state array, and its size) or by calling
+both
+.Fn setstate
+(with the state array) and
+.Fn srandom
+(with the desired seed).
+The advantage of calling both
+.Fn setstate
+and
+.Fn srandom
+is that the size of the state array does not have to be remembered after
+it is initialized.
+.Pp
+With 256 bytes of state information, the period of the random number
+generator is greater than
+.if t 2\u\s769\s10\d,
+.if n 2**69
+which should be sufficient for most purposes.
+.Sh AUTHOR
+Earl T. Cohen
+.Sh DIAGNOSTICS
+If
+.Fn initstate
+is called with less than 8 bytes of state information, or if
+.Fn setstate
+detects that the state information has been garbled, error
+messages are printed on the standard error output.
+.Sh SEE ALSO
+.Xr rand 3
+.Sh HISTORY
+These
+functions appeared in 
+.Bx 4.2 .
+.Sh BUGS
+About 2/3 the speed of
+.Xr rand 3 .
diff --git a/lib/libc/stdlib/random.c b/lib/libc/stdlib/random.c
new file mode 100644
index 0000000..fa89f82
--- /dev/null
+++ b/lib/libc/stdlib/random.c
@@ -0,0 +1,363 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)random.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+/*
+ * random.c:
+ *
+ * An improved random number generation package.  In addition to the standard
+ * rand()/srand() like interface, this package also has a special state info
+ * interface.  The initstate() routine is called with a seed, an array of
+ * bytes, and a count of how many bytes are being passed in; this array is
+ * then initialized to contain information for random number generation with
+ * that much state information.  Good sizes for the amount of state
+ * information are 32, 64, 128, and 256 bytes.  The state can be switched by
+ * calling the setstate() routine with the same array as was initiallized
+ * with initstate().  By default, the package runs with 128 bytes of state
+ * information and generates far better random numbers than a linear
+ * congruential generator.  If the amount of state information is less than
+ * 32 bytes, a simple linear congruential R.N.G. is used.
+ *
+ * Internally, the state information is treated as an array of longs; the
+ * zeroeth element of the array is the type of R.N.G. being used (small
+ * integer); the remainder of the array is the state information for the
+ * R.N.G.  Thus, 32 bytes of state information will give 7 longs worth of
+ * state information, which will allow a degree seven polynomial.  (Note:
+ * the zeroeth word of state information also has some other information
+ * stored in it -- see setstate() for details).
+ *
+ * The random number generation technique is a linear feedback shift register
+ * approach, employing trinomials (since there are fewer terms to sum up that
+ * way).  In this approach, the least significant bit of all the numbers in
+ * the state table will act as a linear feedback shift register, and will
+ * have period 2^deg - 1 (where deg is the degree of the polynomial being
+ * used, assuming that the polynomial is irreducible and primitive).  The
+ * higher order bits will have longer periods, since their values are also
+ * influenced by pseudo-random carries out of the lower bits.  The total
+ * period of the generator is approximately deg*(2**deg - 1); thus doubling
+ * the amount of state information has a vast influence on the period of the
+ * generator.  Note: the deg*(2**deg - 1) is an approximation only good for
+ * large deg, when the period of the shift register is the dominant factor.
+ * With deg equal to seven, the period is actually much longer than the
+ * 7*(2**7 - 1) predicted by this formula.
+ */
+
+/*
+ * For each of the currently supported random number generators, we have a
+ * break value on the amount of state information (you need at least this
+ * many bytes of state info to support this random number generator), a degree
+ * for the polynomial (actually a trinomial) that the R.N.G. is based on, and
+ * the separation between the two lower order coefficients of the trinomial.
+ */
+#define	TYPE_0		0		/* linear congruential */
+#define	BREAK_0		8
+#define	DEG_0		0
+#define	SEP_0		0
+
+#define	TYPE_1		1		/* x**7 + x**3 + 1 */
+#define	BREAK_1		32
+#define	DEG_1		7
+#define	SEP_1		3
+
+#define	TYPE_2		2		/* x**15 + x + 1 */
+#define	BREAK_2		64
+#define	DEG_2		15
+#define	SEP_2		1
+
+#define	TYPE_3		3		/* x**31 + x**3 + 1 */
+#define	BREAK_3		128
+#define	DEG_3		31
+#define	SEP_3		3
+
+#define	TYPE_4		4		/* x**63 + x + 1 */
+#define	BREAK_4		256
+#define	DEG_4		63
+#define	SEP_4		1
+
+/*
+ * Array versions of the above information to make code run faster --
+ * relies on fact that TYPE_i == i.
+ */
+#define	MAX_TYPES	5		/* max number of types above */
+
+static int degrees[MAX_TYPES] =	{ DEG_0, DEG_1, DEG_2, DEG_3, DEG_4 };
+static int seps [MAX_TYPES] =	{ SEP_0, SEP_1, SEP_2, SEP_3, SEP_4 };
+
+/*
+ * Initially, everything is set up as if from:
+ *
+ *	initstate(1, &randtbl, 128);
+ *
+ * Note that this initialization takes advantage of the fact that srandom()
+ * advances the front and rear pointers 10*rand_deg times, and hence the
+ * rear pointer which starts at 0 will also end up at zero; thus the zeroeth
+ * element of the state information, which contains info about the current
+ * position of the rear pointer is just
+ *
+ *	MAX_TYPES * (rptr - state) + TYPE_3 == TYPE_3.
+ */
+
+static long randtbl[DEG_3 + 1] = {
+	TYPE_3,
+	0x9a319039, 0x32d9c024, 0x9b663182, 0x5da1f342, 0xde3b81e0, 0xdf0a6fb5,
+	0xf103bc02, 0x48f340fb, 0x7449e56b, 0xbeb1dbb0, 0xab5c5918, 0x946554fd,
+	0x8c2e680f, 0xeb3d799f, 0xb11ee0b7, 0x2d436b86, 0xda672e2a, 0x1588ca88,
+	0xe369735d, 0x904f35f7, 0xd7158fd6, 0x6fa6f051, 0x616e6b96, 0xac94efdc,
+	0x36413f93, 0xc622c298, 0xf5a42ab8, 0x8a88d77b, 0xf5ad9d0e, 0x8999220b,
+	0x27fb47b9,
+};
+
+/*
+ * fptr and rptr are two pointers into the state info, a front and a rear
+ * pointer.  These two pointers are always rand_sep places aparts, as they
+ * cycle cyclically through the state information.  (Yes, this does mean we
+ * could get away with just one pointer, but the code for random() is more
+ * efficient this way).  The pointers are left positioned as they would be
+ * from the call
+ *
+ *	initstate(1, randtbl, 128);
+ *
+ * (The position of the rear pointer, rptr, is really 0 (as explained above
+ * in the initialization of randtbl) because the state table pointer is set
+ * to point to randtbl[1] (as explained below).
+ */
+static long *fptr = &randtbl[SEP_3 + 1];
+static long *rptr = &randtbl[1];
+
+/*
+ * The following things are the pointer to the state information table, the
+ * type of the current generator, the degree of the current polynomial being
+ * used, and the separation between the two pointers.  Note that for efficiency
+ * of random(), we remember the first location of the state information, not
+ * the zeroeth.  Hence it is valid to access state[-1], which is used to
+ * store the type of the R.N.G.  Also, we remember the last location, since
+ * this is more efficient than indexing every time to find the address of
+ * the last element to see if the front and rear pointers have wrapped.
+ */
+static long *state = &randtbl[1];
+static int rand_type = TYPE_3;
+static int rand_deg = DEG_3;
+static int rand_sep = SEP_3;
+static long *end_ptr = &randtbl[DEG_3 + 1];
+
+/*
+ * srandom:
+ *
+ * Initialize the random number generator based on the given seed.  If the
+ * type is the trivial no-state-information type, just remember the seed.
+ * Otherwise, initializes state[] based on the given "seed" via a linear
+ * congruential generator.  Then, the pointers are set to known locations
+ * that are exactly rand_sep places apart.  Lastly, it cycles the state
+ * information a given number of times to get rid of any initial dependencies
+ * introduced by the L.C.R.N.G.  Note that the initialization of randtbl[]
+ * for default usage relies on values produced by this routine.
+ */
+void
+srandom(x)
+	unsigned int x;
+{
+	register int i, j;
+
+	if (rand_type == TYPE_0)
+		state[0] = x;
+	else {
+		j = 1;
+		state[0] = x;
+		for (i = 1; i < rand_deg; i++)
+			state[i] = 1103515245 * state[i - 1] + 12345;
+		fptr = &state[rand_sep];
+		rptr = &state[0];
+		for (i = 0; i < 10 * rand_deg; i++)
+			(void)random();
+	}
+}
+
+/*
+ * initstate:
+ *
+ * Initialize the state information in the given array of n bytes for future
+ * random number generation.  Based on the number of bytes we are given, and
+ * the break values for the different R.N.G.'s, we choose the best (largest)
+ * one we can and set things up for it.  srandom() is then called to
+ * initialize the state information.
+ *
+ * Note that on return from srandom(), we set state[-1] to be the type
+ * multiplexed with the current value of the rear pointer; this is so
+ * successive calls to initstate() won't lose this information and will be
+ * able to restart with setstate().
+ *
+ * Note: the first thing we do is save the current state, if any, just like
+ * setstate() so that it doesn't matter when initstate is called.
+ *
+ * Returns a pointer to the old state.
+ */
+char *
+initstate(seed, arg_state, n)
+	unsigned int seed;		/* seed for R.N.G. */
+	char *arg_state;		/* pointer to state array */
+	int n;				/* # bytes of state info */
+{
+	register char *ostate = (char *)(&state[-1]);
+
+	if (rand_type == TYPE_0)
+		state[-1] = rand_type;
+	else
+		state[-1] = MAX_TYPES * (rptr - state) + rand_type;
+	if (n < BREAK_0) {
+		(void)fprintf(stderr,
+		    "random: not enough state (%d bytes); ignored.\n", n);
+		return(0);
+	}
+	if (n < BREAK_1) {
+		rand_type = TYPE_0;
+		rand_deg = DEG_0;
+		rand_sep = SEP_0;
+	} else if (n < BREAK_2) {
+		rand_type = TYPE_1;
+		rand_deg = DEG_1;
+		rand_sep = SEP_1;
+	} else if (n < BREAK_3) {
+		rand_type = TYPE_2;
+		rand_deg = DEG_2;
+		rand_sep = SEP_2;
+	} else if (n < BREAK_4) {
+		rand_type = TYPE_3;
+		rand_deg = DEG_3;
+		rand_sep = SEP_3;
+	} else {
+		rand_type = TYPE_4;
+		rand_deg = DEG_4;
+		rand_sep = SEP_4;
+	}
+	state = &(((long *)arg_state)[1]);	/* first location */
+	end_ptr = &state[rand_deg];	/* must set end_ptr before srandom */
+	srandom(seed);
+	if (rand_type == TYPE_0)
+		state[-1] = rand_type;
+	else
+		state[-1] = MAX_TYPES*(rptr - state) + rand_type;
+	return(ostate);
+}
+
+/*
+ * setstate:
+ *
+ * Restore the state from the given state array.
+ *
+ * Note: it is important that we also remember the locations of the pointers
+ * in the current state information, and restore the locations of the pointers
+ * from the old state information.  This is done by multiplexing the pointer
+ * location into the zeroeth word of the state information.
+ *
+ * Note that due to the order in which things are done, it is OK to call
+ * setstate() with the same state as the current state.
+ *
+ * Returns a pointer to the old state information.
+ */
+char *
+setstate(arg_state)
+	char *arg_state;
+{
+	register long *new_state = (long *)arg_state;
+	register int type = new_state[0] % MAX_TYPES;
+	register int rear = new_state[0] / MAX_TYPES;
+	char *ostate = (char *)(&state[-1]);
+
+	if (rand_type == TYPE_0)
+		state[-1] = rand_type;
+	else
+		state[-1] = MAX_TYPES * (rptr - state) + rand_type;
+	switch(type) {
+	case TYPE_0:
+	case TYPE_1:
+	case TYPE_2:
+	case TYPE_3:
+	case TYPE_4:
+		rand_type = type;
+		rand_deg = degrees[type];
+		rand_sep = seps[type];
+		break;
+	default:
+		(void)fprintf(stderr,
+		    "random: state info corrupted; not changed.\n");
+	}
+	state = &new_state[1];
+	if (rand_type != TYPE_0) {
+		rptr = &state[rear];
+		fptr = &state[(rear + rand_sep) % rand_deg];
+	}
+	end_ptr = &state[rand_deg];		/* set end_ptr too */
+	return(ostate);
+}
+
+/*
+ * random:
+ *
+ * If we are using the trivial TYPE_0 R.N.G., just do the old linear
+ * congruential bit.  Otherwise, we do our fancy trinomial stuff, which is
+ * the same in all the other cases due to all the global variables that have
+ * been set up.  The basic operation is to add the number at the rear pointer
+ * into the one at the front pointer.  Then both pointers are advanced to
+ * the next location cyclically in the table.  The value returned is the sum
+ * generated, reduced to 31 bits by throwing away the "least random" low bit.
+ *
+ * Note: the code takes advantage of the fact that both the front and
+ * rear pointers can't wrap on the same call by not testing the rear
+ * pointer if the front one has wrapped.
+ *
+ * Returns a 31-bit random number.
+ */
+long
+random()
+{
+	long i;
+
+	if (rand_type == TYPE_0)
+		i = state[0] = (state[0] * 1103515245 + 12345) & 0x7fffffff;
+	else {
+		*fptr += *rptr;
+		i = (*fptr >> 1) & 0x7fffffff;	/* chucking least random bit */
+		if (++fptr >= end_ptr) {
+			fptr = state;
+			++rptr;
+		} else if (++rptr >= end_ptr)
+			rptr = state;
+	}
+	return(i);
+}
diff --git a/lib/libc/stdlib/realpath.3 b/lib/libc/stdlib/realpath.3
new file mode 100644
index 0000000..83f4a43
--- /dev/null
+++ b/lib/libc/stdlib/realpath.3
@@ -0,0 +1,125 @@
+.\" Copyright (c) 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Jan-Simon Pendry.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)realpath.3	8.2 (Berkeley) 2/16/94
+.\"
+.Dd "February 16, 1994"
+.Dt REALPATH 3
+.Os
+.Sh NAME
+.Nm realpath
+.Nd returns the canonicalized absolute pathname
+.Sh SYNOPSIS
+.Fd #include <sys/param.h>
+.Fd #include <stdlib.h>
+.Ft "char *"
+.Fn realpath "const char *pathname" "char resolvedname[MAXPATHLEN]"
+.Sh DESCRIPTION
+The
+.Fn realpath
+function resolves all symbolic links, extra
+.Dq /
+characters and references to
+.Pa /./
+and
+.Pa /../
+in
+.Fa pathname ,
+and copies the resulting absolute pathname into
+the memory referenced by
+.Fa resolvedname .
+The
+.Fa resolvedname
+argument
+.Em must
+refer to a buffer capable of storing at least
+.Dv MAXPATHLEN
+characters.
+.Pp
+The 
+.Fn realpath
+function will resolve both absolute and relative paths
+and return the absolute pathname corresponding to
+.Fa pathname .
+All but the last component of
+.Fa pathname
+must exist when
+.Fn realpath
+is called.
+.Sh "RETURN VALUES"
+The
+.Fn realpath
+function returns
+.Fa resolved_name
+on success.
+If an error occurs,
+.Fn realpath
+returns
+.Dv NULL ,
+and
+.Fa resolved_name
+contains the pathname which caused the problem.
+.Sh ERRORS
+The function
+.Fn realpath
+may fail and set the external variable
+.Va errno
+for any of the errors specified for the library functions
+.Xr chdir 2 ,
+.Xr close 2 ,
+.Xr fchdir 2 ,
+.Xr lstat 2 ,
+.Xr open 2 ,
+.Xr readlink 2
+and
+.Xr getcwd 3 .
+.Sh CAVEATS
+This implementation of
+.Fn realpath
+differs slightly from the Solaris implementation.
+The
+.Bx 4.4
+version always returns absolute pathnames,
+whereas the Solaris implementation will,
+under certain circumstances, return a relative
+.Fa resolved_path
+when given a relative
+.Fa pathname .
+.Sh "SEE ALSO"
+.Xr getcwd 3
+.Sh HISTORY
+The
+.Fn realpath
+function call first appeared in
+.Bx 4.4 .
diff --git a/lib/libc/stdlib/realpath.c b/lib/libc/stdlib/realpath.c
new file mode 100644
index 0000000..28380d7
--- /dev/null
+++ b/lib/libc/stdlib/realpath.c
@@ -0,0 +1,158 @@
+/*
+ * Copyright (c) 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Jan-Simon Pendry.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)realpath.c	8.1 (Berkeley) 2/16/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+/*
+ * char *realpath(const char *path, char resolved_path[MAXPATHLEN]);
+ *
+ * Find the real name of path, by removing all ".", ".." and symlink
+ * components.  Returns (resolved) on success, or (NULL) on failure,
+ * in which case the path which caused trouble is left in (resolved).
+ */
+char *
+realpath(path, resolved)
+	const char *path;
+	char *resolved;
+{
+	struct stat sb;
+	int fd, n, rootd, serrno;
+	char *p, *q, wbuf[MAXPATHLEN];
+
+	/* Save the starting point. */
+	if ((fd = open(".", O_RDONLY)) < 0) {
+		(void)strcpy(resolved, ".");
+		return (NULL);
+	}
+
+	/*
+	 * Find the dirname and basename from the path to be resolved.
+	 * Change directory to the dirname component.
+	 * lstat the basename part.
+	 *     if it is a symlink, read in the value and loop.
+	 *     if it is a directory, then change to that directory.
+	 * get the current directory name and append the basename.
+	 */
+	(void)strncpy(resolved, path, MAXPATHLEN - 1);
+	resolved[MAXPATHLEN - 1] = '\0';
+loop:
+	q = strrchr(resolved, '/');
+	if (q != NULL) {
+		p = q + 1;
+		if (q == resolved)
+			q = "/";
+		else {
+			do {
+				--q;
+			} while (q > resolved && *q == '/');
+			q[1] = '\0';
+			q = resolved;
+		}
+		if (chdir(q) < 0)
+			goto err1;
+	} else
+		p = resolved;
+
+	/* Deal with the last component. */
+	if (*p != '\0' && lstat(p, &sb) == 0) {
+		if (S_ISLNK(sb.st_mode)) {
+			n = readlink(p, resolved, MAXPATHLEN);
+			if (n < 0)
+				goto err1;
+			resolved[n] = '\0';
+			goto loop;
+		}
+		if (S_ISDIR(sb.st_mode)) {
+			if (chdir(p) < 0)
+				goto err1;
+			p = "";
+		}
+	}
+
+	/*
+	 * Save the last component name and get the full pathname of
+	 * the current directory.
+	 */
+	(void)strcpy(wbuf, p);
+	if (getcwd(resolved, MAXPATHLEN) == 0)
+		goto err1;
+
+	/*
+	 * Join the two strings together, ensuring that the right thing
+	 * happens if the last component is empty, or the dirname is root.
+	 */
+	if (resolved[0] == '/' && resolved[1] == '\0')
+		rootd = 1;
+	else
+		rootd = 0;
+
+	if (*wbuf) {
+		if (strlen(resolved) + strlen(wbuf) + rootd + 1 > MAXPATHLEN) {
+			errno = ENAMETOOLONG;
+			goto err1;
+		}
+		if (rootd == 0)
+			(void)strcat(resolved, "/");
+		(void)strcat(resolved, wbuf);
+	}
+
+	/* Go back to where we came from. */
+	if (fchdir(fd) < 0) {
+		serrno = errno;
+		goto err2;
+	}
+
+	/* It's okay if the close fails, what's an fd more or less? */
+	(void)close(fd);
+	return (resolved);
+
+err1:	serrno = errno;
+	(void)fchdir(fd);
+err2:	(void)close(fd);
+	errno = serrno;
+	return (NULL);
+}
diff --git a/lib/libc/stdlib/setenv.c b/lib/libc/stdlib/setenv.c
new file mode 100644
index 0000000..4a28f25
--- /dev/null
+++ b/lib/libc/stdlib/setenv.c
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 1987, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)setenv.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+char *__findenv __P((const char *, int *));
+
+/*
+ * setenv --
+ *	Set the value of the environmental variable "name" to be
+ *	"value".  If rewrite is set, replace any current value.
+ */
+setenv(name, value, rewrite)
+	register const char *name;
+	register const char *value;
+	int rewrite;
+{
+	extern char **environ;
+	static int alloced;			/* if allocated space before */
+	register char *c;
+	int l_value, offset;
+
+	if (*value == '=')			/* no `=' in value */
+		++value;
+	l_value = strlen(value);
+	if ((c = __findenv(name, &offset))) {	/* find if already exists */
+		if (!rewrite)
+			return (0);
+		if (strlen(c) >= l_value) {	/* old larger; copy over */
+			while (*c++ = *value++);
+			return (0);
+		}
+	} else {					/* create new slot */
+		register int cnt;
+		register char **p;
+
+		for (p = environ, cnt = 0; *p; ++p, ++cnt);
+		if (alloced) {			/* just increase size */
+			environ = (char **)realloc((char *)environ,
+			    (size_t)(sizeof(char *) * (cnt + 2)));
+			if (!environ)
+				return (-1);
+		}
+		else {				/* get new space */
+			alloced = 1;		/* copy old entries into it */
+			p = malloc((size_t)(sizeof(char *) * (cnt + 2)));
+			if (!p)
+				return (-1);
+			bcopy(environ, p, cnt * sizeof(char *));
+			environ = p;
+		}
+		environ[cnt + 1] = NULL;
+		offset = cnt;
+	}
+	for (c = (char *)name; *c && *c != '='; ++c);	/* no `=' in name */
+	if (!(environ[offset] =			/* name + `=' + value */
+	    malloc((size_t)((int)(c - name) + l_value + 2))))
+		return (-1);
+	for (c = environ[offset]; (*c = *name++) && *c != '='; ++c);
+	for (*c++ = '='; *c++ = *value++;);
+	return (0);
+}
+
+/*
+ * unsetenv(name) --
+ *	Delete environmental variable "name".
+ */
+void
+unsetenv(name)
+	const char *name;
+{
+	extern char **environ;
+	register char **p;
+	int offset;
+
+	while (__findenv(name, &offset))	/* if set multiple times */
+		for (p = &environ[offset];; ++p)
+			if (!(*p = *(p + 1)))
+				break;
+}
diff --git a/lib/libc/stdlib/strhash.c b/lib/libc/stdlib/strhash.c
new file mode 100644
index 0000000..9349d0a
--- /dev/null
+++ b/lib/libc/stdlib/strhash.c
@@ -0,0 +1,432 @@
+#ifndef lint
+static char *rcsid = "$Header: /home/ncvs/src/lib/libc/stdlib/strhash.c,v 1.4 1995/05/30 05:41:55 rgrimes Exp $";
+#endif
+
+/*
+ *
+ *                      Copyright 1990
+ *               Terry Jones & Jordan Hubbard
+ *
+ *		  PCS Computer Systeme, GmbH.
+ *	             Munich, West Germany
+ *
+ *
+ *  All rights reserved.
+ *
+ *  This is unsupported software and is subject to change without notice.
+ *  the author makes no representations about the suitability of this software
+ *  for any purpose. It is supplied "as is" without express or implied
+ *  warranty.
+ *
+ *  Permission to use, copy, modify, and distribute this software and its
+ *  documentation for any purpose and without fee is hereby granted, provided
+ *  that the above copyright notice appear in all copies and that both that
+ *  copyright notice and this permission notice appear in supporting
+ *  documentation, and that the name of the author not be used in
+ *  advertising or publicity pertaining to distribution of the software
+ *  without specific, written prior permission.
+ *
+ */
+
+/*
+ * This is a fairly simple open addressing hash scheme.
+ * Terry did all the code, I just did the spec.
+ * Thanks again, you crazy Aussie..
+ *
+ */
+
+/*
+ * $Log: strhash.c,v $
+ * Revision 1.4  1995/05/30  05:41:55  rgrimes
+ * Remove trailing whitespace.
+ *
+ * Revision 1.3  1995/03/28  08:41:02  jkh
+ * Fix a missing _hash() to prevent namespace pollution with the db/hash routines.
+ * Grrr.  If the dbhash routines weren't grossly overengineered I wouldn't
+ * even need to do this! :-(
+ *
+ * Also now export the hash_stats routine.  Manpage coming RSN - I promise.
+ *
+ * Revision 1.2  1995/03/26  19:32:24  ache
+ * Hash 8bit chars without sign extension
+ *
+ * Revision 1.1  1995/03/26  10:21:55  jkh
+ * Add the strhash family of routines.  They provide a number of features
+ * that the db/hash functions don't, and they're much simpler to use for
+ * low-overhead string hashing.
+ *
+ * Revision 1.1  1995/02/25  02:16:34  jkh
+ * Second version of this - now support the essentials of a basic
+ * attributed file system for storing menu information and command
+ * templates.  This is not finished yet, but it does compile so I can
+ * commit it to the tree now and continue working on it.
+ *
+ * Revision 2.0  90/03/26  01:44:26  jkh
+ * pre-beta check-in
+ *
+ * Revision 1.8  90/03/09  19:22:35  jkh
+ * Fixed bogus comment.
+ *
+ * Revision 1.7  90/03/09  19:01:08  jkh
+ * Added comments, GPL.
+ *
+ * Revision 1.6  90/03/08  17:55:58  terry
+ * Rearranged hash_purge to be a tiny bit more efficient.
+ * Added verbose option to hash_stats.
+ *
+ * Revision 1.5  90/03/08  17:19:54  terry
+ * Added hash_purge. Added arg to hash_traverse. Changed all
+ * void * to Generic.
+ *
+ * Revision 1.4  90/03/08  12:02:35  terry
+ * Fixed problems with allocation that I screwed up last night.
+ * Changed bucket lists to be singly linked. Thanks to JKH, my hero.
+ *
+ * Revision 1.3  90/03/07  21:33:33  terry
+ * Cleaned up a few decls to keep gcc -Wall quiet.
+ *
+ * Revision 1.2  90/03/07  21:14:53  terry
+ * Comments. Added HASH_STATS define. Removed hash_find()
+ * and new_node().
+ *
+ * Revision 1.1  90/03/07  20:49:45  terry
+ * Initial revision
+ *
+ *
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <strhash.h>
+
+#define HASH_NULL    (hash_table *)0
+#define NODE_NULL    (hash_node *)0
+#define GENERIC_NULL (void *)0
+
+#define HASH_SZ 97
+
+
+static int _hash(int size, char *key);
+static hash_node *list_find(caddr_t key, hash_node *head);
+
+
+/*
+ * hash_create()
+ *
+ * Malloc room for a new hash table and then room for its
+ * bucket pointers. Then set all the buckets to
+ * point to 0. Return the address of the new table.
+ */
+hash_table *
+hash_create(int size)
+{
+    register int i;
+    hash_table *new = (hash_table *)malloc(sizeof(hash_table));
+
+    if (!new || size < 0){
+	return HASH_NULL;
+    }
+
+    if (size == 0){
+	size = HASH_SZ;
+    }
+
+    if (!(new->buckets = (hash_node **)malloc(size * sizeof(hash_node *)))){
+	return HASH_NULL;
+    }
+
+    for (i = 0; i < size; i++){
+	new->buckets[i] = NODE_NULL;
+    }
+    new->size = size;
+
+    return new;
+}
+
+
+/*
+ * list_find()
+ *
+ * Find the key in the linked list pointed to by head.
+ */
+static hash_node *
+list_find(caddr_t key, hash_node *head)
+{
+    while (head){
+	if (!strcmp(head->key, key)){
+	    return head;
+	}
+	head = head->next;
+    }
+    return NODE_NULL;
+}
+
+
+/*
+ * _hash()
+ *
+ * Compute the hash value for the given key.
+ */
+static int
+_hash(int size, char *key)
+{
+    unsigned int h = 0x0;
+
+    while (*key){
+	h = (h << 1) ^ (h ^ (unsigned char) *key++);
+    }
+
+    h %= size;
+    return h;
+}
+
+/*
+ * hash_destroy()
+ *
+ * Find the key and (if it's there) remove it entirely.
+ * The function (*nukefunc)() is in charge of disposing
+ * of the storage help by the data associated with the node.
+ */
+void
+hash_destroy(hash_table *table, char *key, void (*nukefunc)())
+{
+    int bucket = _hash(table->size, key);
+    hash_node *found = table->buckets[bucket];
+    hash_node *to_free = NODE_NULL;
+
+    if (!found) {
+	return;
+    }
+
+    if (!strcmp(found->key, key)) {
+	/*
+	 * It was the head of the list.
+	 */
+	table->buckets[bucket] = found->next;
+	to_free = found;
+    }
+    else {
+	/*
+	 * Walk the list, looking one ahead.
+	 */
+	while (found->next) {
+	    if (!strcmp(found->next->key, key)) {
+		to_free = found->next;
+		found->next = found->next->next;
+		break;
+	    }
+	    found = found->next;
+	}
+
+	if (!to_free){
+	    return;
+	}
+    }
+
+    if (nukefunc)
+	(*nukefunc)(to_free->key, to_free->data);
+    free(to_free);
+    return;
+}
+
+
+/*
+ * hash_search()
+ *
+ * Search the table for the given key. Then:
+ *
+ * 1) If you find it and there is no replacement function, just
+ *    return what you found. (This is a simple search).
+ * 2) If you find it and there is a replacement function, run
+ *    the function on the data you found, and replace the old
+ *    data with whatever is passed in datum. Return 0.
+ * 3) If you don't find it and there is some datum, insert a
+ *    new item into the table. Insertions go at the front of
+ *    the bucket. Return 0.
+ * 4) Otherwise just return 0.
+ *
+ */
+void *
+hash_search(hash_table *table, caddr_t key, void *datum,
+	    void (*replace_func)())
+{
+    int bucket = _hash(table->size, key);
+    hash_node *found = list_find(key, table->buckets[bucket]);
+
+    if (found){
+	if (!replace_func){
+	    return found->data;
+	}
+	else{
+	    (*replace_func)(found->data);
+	    found->data = datum;
+	}
+    }
+    else{
+	if (datum){
+
+	    static int assign_key();
+
+	    hash_node *new = (hash_node *)malloc(sizeof(hash_node));
+
+	    if (!new || !assign_key(key, new)){
+		return GENERIC_NULL;
+	    }
+	    new->data = datum;
+	    new->next = table->buckets[bucket];
+	    table->buckets[bucket] = new;
+	}
+    }
+    return GENERIC_NULL;
+}
+
+
+/*
+ * assign_key()
+ *
+ * Set the key value of a node to be 'key'. Get some space from
+ * malloc and copy it in etc. Return 1 if all is well, 0 otherwise.
+ */
+static int
+assign_key(char *key, hash_node *node)
+{
+    if (!node || !key){
+	return 0;
+    }
+
+    if (!(node->key = (char *)malloc(strlen(key) + 1))){
+	return 0;
+    }
+
+    node->key[0] = '\0';
+    strcat(node->key, key);
+    return 1;
+}
+
+/*
+ * hash_traverse()
+ *
+ * Traverse the hash table and run the function func on the
+ * data found at each node and the argument we're passed for it.
+ */
+void
+hash_traverse(hash_table *table, int (*func)(), void *arg)
+{
+    register int i;
+    register int size = table->size;
+
+    if (!func)
+	return;
+
+    for (i = 0; i < size; i++) {
+	hash_node *n = table->buckets[i];
+	while (n) {
+	    if ((*func)(n->key, n->data, arg) == 0)
+		return;
+	    n = n->next;
+	}
+    }
+    return;
+}
+
+/*
+ * hash_purge()
+ *
+ * Run through the entire hash table. Call purge_func
+ * on the data found at each node, and then free the node.
+ * Set all the bucket pointers to 0.
+ */
+void
+hash_purge(hash_table *table, void (*purge_func)(char *p1, void *p2))
+{
+    register int i;
+    register int size = table->size;
+
+    for (i = 0; i < size; i++) {
+	hash_node *n = table->buckets[i];
+	if (n) {
+	    do {
+		hash_node *to_free = n;
+		if (purge_func) {
+		    (*purge_func)(n->key, n->data);
+		}
+		n = n->next;
+		free(to_free);
+	    } while (n);
+	    table->buckets[i] = NODE_NULL;
+	}
+    }
+}
+
+#undef min
+#define min(a, b) (a) < (b) ? (a) : (b)
+
+/*
+ * hash_stats()
+ *
+ * Print statistics about the current table allocation to stdout.
+ */
+void
+hash_stats(hash_table *table, int verbose)
+{
+    register int i;
+    int total_elements = 0;
+    int non_empty_buckets = 0;
+    int max_count = 0;
+    int max_repeats = 0;
+    int *counts;
+    int size = table->size;
+
+    if (!(counts = (int *)malloc(size * sizeof(int)))){
+	fprintf(stderr, "malloc returns 0\n");
+	exit(1);
+    }
+
+    for (i = 0; i < size; i++){
+	int x = 0;
+	hash_node *n = table->buckets[i];
+	counts[i] = 0;
+	while (n){
+	    if (!x){
+		x = 1;
+		non_empty_buckets++;
+		if (verbose){
+		    printf("bucket %2d: ", i);
+		}
+	    }
+	    if (verbose){
+		printf(" %s", n->key);
+	    }
+	    counts[i]++;
+	    n = n->next;
+	}
+
+	total_elements += counts[i];
+	if (counts[i] > max_count){
+	    max_count = counts[i];
+	    max_repeats = 1;
+	}
+	else if (counts[i] == max_count){
+	    max_repeats++;
+	}
+
+	if (counts[i] && verbose){
+	    printf(" (%d)\n", counts[i]);
+	}
+    }
+
+    printf("\n");
+    printf("%d element%s in storage.\n", total_elements, total_elements == 1 ? "" : "s");
+
+    if (total_elements){
+	printf("%d of %d (%.2f%%) buckets are in use\n", non_empty_buckets, size,
+	       (double)100 * (double)non_empty_buckets / (double)(size));
+	printf("the maximum number of elements in a bucket is %d (%d times)\n", max_count, max_repeats);
+	printf("average per bucket is %f\n", (double)total_elements / (double)non_empty_buckets);
+	printf("optimal would be %f\n", (double)total_elements / (double)(min(size, total_elements)));
+    }
+    return;
+}
diff --git a/lib/libc/stdlib/strtod.3 b/lib/libc/stdlib/strtod.3
new file mode 100644
index 0000000..e1d4c39
--- /dev/null
+++ b/lib/libc/stdlib/strtod.3
@@ -0,0 +1,132 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strtod.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt STRTOD 3
+.Os
+.Sh NAME
+.Nm strtod
+.Nd convert
+.Tn ASCII
+string to double
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft double
+.Fn strtod "const char *nptr" "char **endptr"
+.Sh DESCRIPTION
+The
+.Fn strtod
+function converts the initial portion of the string 
+pointed to by
+.Fa nptr
+to
+.Em double
+representation.
+.Pp
+The expected form of the string is an optional plus (``+'') or minus
+sign (``\-'') followed by a sequence of digits optionally containing
+a decimal-point character, optionally followed by an exponent.
+An exponent consists of an ``E'' or ``e'', followed by an optional plus
+or minus sign, followed by a sequence of digits.
+.Pp
+Leading white-space characters in the string (as defined by the
+.Xr isspace 3
+function) are skipped.
+.Sh RETURN VALUES
+The
+.Fn strtod
+function returns the converted value, if any.
+.Pp
+If
+.Fa endptr
+is not
+.Dv NULL ,
+a pointer to the character after the last character used
+in the conversion is stored in the location referenced by
+.Fa endptr .
+.Pp
+If no conversion is performed, zero is returned and the value of
+.Fa nptr
+is stored in the location referenced by
+.Fa endptr .
+.Pp
+If the correct value would cause overflow, plus or minus
+.Dv HUGE_VAL
+is returned (according to the sign of the value), and
+.Dv ERANGE
+is stored in
+.Va errno .
+If the correct value would cause underflow, zero is
+returned and
+.Dv ERANGE
+is stored in 
+.Va errno .
+.Sh ERRORS
+.Bl -tag -width [ERANGE]
+.It Bq Er ERANGE
+Overflow or underflow occurred.
+.Sh SEE ALSO
+.Xr atof 3 ,
+.Xr atoi 3 ,
+.Xr atol 3 ,
+.Xr strtol 3 ,
+.Xr strtoul 3
+.Sh STANDARDS
+The
+.Fn strtod
+function
+conforms to
+.St -ansiC .
+.Sh AUTHORS
+The author of this software is David M. Gay.
+.Pp
+Copyright (c) 1991 by AT&T.
+.Pp
+Permission to use, copy, modify, and distribute this software for any
+purpose without fee is hereby granted, provided that this entire notice
+is included in all copies of any software which is or includes a copy
+or modification of this software and in all copies of the supporting
+documentation for such software.
+.Pp
+THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+WARRANTY.  IN PARTICULAR, NEITHER THE AUTHOR NOR AT&T MAKES ANY
+REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+.Pp
+Contact your vendor for a free copy of the source code to
+.Fn strtod
+and accompanying functions.
diff --git a/lib/libc/stdlib/strtod.c b/lib/libc/stdlib/strtod.c
new file mode 100644
index 0000000..0ccd6fd
--- /dev/null
+++ b/lib/libc/stdlib/strtod.c
@@ -0,0 +1,2443 @@
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strtod.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+/****************************************************************
+ *
+ * The author of this software is David M. Gay.
+ *
+ * Copyright (c) 1991 by AT&T.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ *
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHOR NOR AT&T MAKES ANY
+ * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ *
+ ***************************************************************/
+
+/* Please send bug reports to
+	David M. Gay
+	AT&T Bell Laboratories, Room 2C-463
+	600 Mountain Avenue
+	Murray Hill, NJ 07974-2070
+	U.S.A.
+	dmg@research.att.com or research!dmg
+ */
+
+/* strtod for IEEE-, VAX-, and IBM-arithmetic machines.
+ *
+ * This strtod returns a nearest machine number to the input decimal
+ * string (or sets errno to ERANGE).  With IEEE arithmetic, ties are
+ * broken by the IEEE round-even rule.  Otherwise ties are broken by
+ * biased rounding (add half and chop).
+ *
+ * Inspired loosely by William D. Clinger's paper "How to Read Floating
+ * Point Numbers Accurately" [Proc. ACM SIGPLAN '90, pp. 92-101].
+ *
+ * Modifications:
+ *
+ *	1. We only require IEEE, IBM, or VAX double-precision
+ *		arithmetic (not IEEE double-extended).
+ *	2. We get by with floating-point arithmetic in a case that
+ *		Clinger missed -- when we're computing d * 10^n
+ *		for a small integer d and the integer n is not too
+ *		much larger than 22 (the maximum integer k for which
+ *		we can represent 10^k exactly), we may be able to
+ *		compute (d*10^k) * 10^(e-k) with just one roundoff.
+ *	3. Rather than a bit-at-a-time adjustment of the binary
+ *		result in the hard case, we use floating-point
+ *		arithmetic to determine the adjustment to within
+ *		one bit; only in really hard cases do we need to
+ *		compute a second residual.
+ *	4. Because of 3., we don't need a large table of powers of 10
+ *		for ten-to-e (just some small tables, e.g. of 10^k
+ *		for 0 <= k <= 22).
+ */
+
+/*
+ * #define IEEE_8087 for IEEE-arithmetic machines where the least
+ *	significant byte has the lowest address.
+ * #define IEEE_MC68k for IEEE-arithmetic machines where the most
+ *	significant byte has the lowest address.
+ * #define Sudden_Underflow for IEEE-format machines without gradual
+ *	underflow (i.e., that flush to zero on underflow).
+ * #define IBM for IBM mainframe-style floating-point arithmetic.
+ * #define VAX for VAX-style floating-point arithmetic.
+ * #define Unsigned_Shifts if >> does treats its left operand as unsigned.
+ * #define No_leftright to omit left-right logic in fast floating-point
+ *	computation of dtoa.
+ * #define Check_FLT_ROUNDS if FLT_ROUNDS can assume the values 2 or 3.
+ * #define RND_PRODQUOT to use rnd_prod and rnd_quot (assembly routines
+ *	that use extended-precision instructions to compute rounded
+ *	products and quotients) with IBM.
+ * #define ROUND_BIASED for IEEE-format with biased rounding.
+ * #define Inaccurate_Divide for IEEE-format with correctly rounded
+ *	products but inaccurate quotients, e.g., for Intel i860.
+ * #define Just_16 to store 16 bits per 32-bit long when doing high-precision
+ *	integer arithmetic.  Whether this speeds things up or slows things
+ *	down depends on the machine and the number being converted.
+ * #define KR_headers for old-style C function headers.
+ * #define Bad_float_h if your system lacks a float.h or if it does not
+ *	define some or all of DBL_DIG, DBL_MAX_10_EXP, DBL_MAX_EXP,
+ *	FLT_RADIX, FLT_ROUNDS, and DBL_MAX.
+ */
+
+#if defined(i386) || defined(mips) && defined(MIPSEL)
+#define IEEE_8087
+#else
+#define IEEE_MC68k
+#endif
+
+#ifdef DEBUG
+#include "stdio.h"
+#define Bug(x) {fprintf(stderr, "%s\n", x); exit(1);}
+#endif
+
+#ifdef __cplusplus
+#include "malloc.h"
+#include "memory.h"
+#else
+#ifndef KR_headers
+#include "stdlib.h"
+#include "string.h"
+#else
+#include "malloc.h"
+#include "memory.h"
+#endif
+#endif
+
+#include "errno.h"
+#include <ctype.h>
+#ifdef Bad_float_h
+#undef __STDC__
+#ifdef IEEE_MC68k
+#define IEEE_ARITHMETIC
+#endif
+#ifdef IEEE_8087
+#define IEEE_ARITHMETIC
+#endif
+#ifdef IEEE_ARITHMETIC
+#define DBL_DIG 15
+#define DBL_MAX_10_EXP 308
+#define DBL_MAX_EXP 1024
+#define FLT_RADIX 2
+#define FLT_ROUNDS 1
+#define DBL_MAX 1.7976931348623157e+308
+#endif
+
+#ifdef IBM
+#define DBL_DIG 16
+#define DBL_MAX_10_EXP 75
+#define DBL_MAX_EXP 63
+#define FLT_RADIX 16
+#define FLT_ROUNDS 0
+#define DBL_MAX 7.2370055773322621e+75
+#endif
+
+#ifdef VAX
+#define DBL_DIG 16
+#define DBL_MAX_10_EXP 38
+#define DBL_MAX_EXP 127
+#define FLT_RADIX 2
+#define FLT_ROUNDS 1
+#define DBL_MAX 1.7014118346046923e+38
+#endif
+
+#ifndef LONG_MAX
+#define LONG_MAX 2147483647
+#endif
+#else
+#include "float.h"
+#endif
+#ifndef __MATH_H__
+#include "math.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef CONST
+#ifdef KR_headers
+#define CONST /* blank */
+#else
+#define CONST const
+#endif
+#endif
+
+#ifdef Unsigned_Shifts
+#define Sign_Extend(a,b) if (b < 0) a |= 0xffff0000;
+#else
+#define Sign_Extend(a,b) /*no-op*/
+#endif
+
+#if defined(IEEE_8087) + defined(IEEE_MC68k) + defined(VAX) + defined(IBM) != 1
+Exactly one of IEEE_8087, IEEE_MC68k, VAX, or IBM should be defined.
+#endif
+
+#ifdef IEEE_8087
+#define word0(x) ((unsigned long *)&x)[1]
+#define word1(x) ((unsigned long *)&x)[0]
+#else
+#define word0(x) ((unsigned long *)&x)[0]
+#define word1(x) ((unsigned long *)&x)[1]
+#endif
+
+/* The following definition of Storeinc is appropriate for MIPS processors.
+ * An alternative that might be better on some machines is
+ * #define Storeinc(a,b,c) (*a++ = b << 16 | c & 0xffff)
+ */
+#if defined(IEEE_8087) + defined(VAX)
+#define Storeinc(a,b,c) (((unsigned short *)a)[1] = (unsigned short)b, \
+((unsigned short *)a)[0] = (unsigned short)c, a++)
+#else
+#define Storeinc(a,b,c) (((unsigned short *)a)[0] = (unsigned short)b, \
+((unsigned short *)a)[1] = (unsigned short)c, a++)
+#endif
+
+/* #define P DBL_MANT_DIG */
+/* Ten_pmax = floor(P*log(2)/log(5)) */
+/* Bletch = (highest power of 2 < DBL_MAX_10_EXP) / 16 */
+/* Quick_max = floor((P-1)*log(FLT_RADIX)/log(10) - 1) */
+/* Int_max = floor(P*log(FLT_RADIX)/log(10) - 1) */
+
+#if defined(IEEE_8087) + defined(IEEE_MC68k)
+#define Exp_shift  20
+#define Exp_shift1 20
+#define Exp_msk1    0x100000
+#define Exp_msk11   0x100000
+#define Exp_mask  0x7ff00000
+#define P 53
+#define Bias 1023
+#define IEEE_Arith
+#define Emin (-1022)
+#define Exp_1  0x3ff00000
+#define Exp_11 0x3ff00000
+#define Ebits 11
+#define Frac_mask  0xfffff
+#define Frac_mask1 0xfffff
+#define Ten_pmax 22
+#define Bletch 0x10
+#define Bndry_mask  0xfffff
+#define Bndry_mask1 0xfffff
+#define LSB 1
+#define Sign_bit 0x80000000
+#define Log2P 1
+#define Tiny0 0
+#define Tiny1 1
+#define Quick_max 14
+#define Int_max 14
+#define Infinite(x) (word0(x) == 0x7ff00000) /* sufficient test for here */
+#else
+#undef  Sudden_Underflow
+#define Sudden_Underflow
+#ifdef IBM
+#define Exp_shift  24
+#define Exp_shift1 24
+#define Exp_msk1   0x1000000
+#define Exp_msk11  0x1000000
+#define Exp_mask  0x7f000000
+#define P 14
+#define Bias 65
+#define Exp_1  0x41000000
+#define Exp_11 0x41000000
+#define Ebits 8	/* exponent has 7 bits, but 8 is the right value in b2d */
+#define Frac_mask  0xffffff
+#define Frac_mask1 0xffffff
+#define Bletch 4
+#define Ten_pmax 22
+#define Bndry_mask  0xefffff
+#define Bndry_mask1 0xffffff
+#define LSB 1
+#define Sign_bit 0x80000000
+#define Log2P 4
+#define Tiny0 0x100000
+#define Tiny1 0
+#define Quick_max 14
+#define Int_max 15
+#else /* VAX */
+#define Exp_shift  23
+#define Exp_shift1 7
+#define Exp_msk1    0x80
+#define Exp_msk11   0x800000
+#define Exp_mask  0x7f80
+#define P 56
+#define Bias 129
+#define Exp_1  0x40800000
+#define Exp_11 0x4080
+#define Ebits 8
+#define Frac_mask  0x7fffff
+#define Frac_mask1 0xffff007f
+#define Ten_pmax 24
+#define Bletch 2
+#define Bndry_mask  0xffff007f
+#define Bndry_mask1 0xffff007f
+#define LSB 0x10000
+#define Sign_bit 0x8000
+#define Log2P 1
+#define Tiny0 0x80
+#define Tiny1 0
+#define Quick_max 15
+#define Int_max 15
+#endif
+#endif
+
+#ifndef IEEE_Arith
+#define ROUND_BIASED
+#endif
+
+#ifdef RND_PRODQUOT
+#define rounded_product(a,b) a = rnd_prod(a, b)
+#define rounded_quotient(a,b) a = rnd_quot(a, b)
+#ifdef KR_headers
+extern double rnd_prod(), rnd_quot();
+#else
+extern double rnd_prod(double, double), rnd_quot(double, double);
+#endif
+#else
+#define rounded_product(a,b) a *= b
+#define rounded_quotient(a,b) a /= b
+#endif
+
+#define Big0 (Frac_mask1 | Exp_msk1*(DBL_MAX_EXP+Bias-1))
+#define Big1 0xffffffff
+
+#ifndef Just_16
+/* When Pack_32 is not defined, we store 16 bits per 32-bit long.
+ * This makes some inner loops simpler and sometimes saves work
+ * during multiplications, but it often seems to make things slightly
+ * slower.  Hence the default is now to store 32 bits per long.
+ */
+#ifndef Pack_32
+#define Pack_32
+#endif
+#endif
+
+#define Kmax 15
+
+#ifdef __cplusplus
+extern "C" double strtod(const char *s00, char **se);
+extern "C" char *dtoa(double d, int mode, int ndigits,
+			int *decpt, int *sign, char **rve);
+#endif
+
+ struct
+Bigint {
+	struct Bigint *next;
+	int k, maxwds, sign, wds;
+	unsigned long x[1];
+};
+
+ typedef struct Bigint Bigint;
+
+ static Bigint *freelist[Kmax+1];
+
+ static Bigint *
+Balloc
+#ifdef KR_headers
+	(k) int k;
+#else
+	(int k)
+#endif
+{
+	int x;
+	Bigint *rv;
+
+	if (rv = freelist[k]) {
+		freelist[k] = rv->next;
+	} else {
+		x = 1 << k;
+		rv = (Bigint *)malloc(sizeof(Bigint) + (x-1)*sizeof(long));
+		rv->k = k;
+		rv->maxwds = x;
+	}
+	rv->sign = rv->wds = 0;
+	return rv;
+}
+
+ static void
+Bfree
+#ifdef KR_headers
+	(v) Bigint *v;
+#else
+	(Bigint *v)
+#endif
+{
+	if (v) {
+		v->next = freelist[v->k];
+		freelist[v->k] = v;
+	}
+}
+
+#define Bcopy(x,y) memcpy((char *)&x->sign, (char *)&y->sign, \
+y->wds*sizeof(long) + 2*sizeof(int))
+
+ static Bigint *
+multadd
+#ifdef KR_headers
+	(b, m, a) Bigint *b; int m, a;
+#else
+	(Bigint *b, int m, int a)	/* multiply by m and add a */
+#endif
+{
+	int i, wds;
+	unsigned long *x, y;
+#ifdef Pack_32
+	unsigned long xi, z;
+#endif
+	Bigint *b1;
+
+	wds = b->wds;
+	x = b->x;
+	i = 0;
+	do {
+#ifdef Pack_32
+		xi = *x;
+		y = (xi & 0xffff) * m + a;
+		z = (xi >> 16) * m + (y >> 16);
+		a = (int)(z >> 16);
+		*x++ = (z << 16) + (y & 0xffff);
+#else
+		y = *x * m + a;
+		a = (int)(y >> 16);
+		*x++ = y & 0xffff;
+#endif
+	} while (++i < wds);
+	if (a) {
+		if (wds >= b->maxwds) {
+			b1 = Balloc(b->k+1);
+			Bcopy(b1, b);
+			Bfree(b);
+			b = b1;
+			}
+		b->x[wds++] = a;
+		b->wds = wds;
+	}
+	return b;
+}
+
+ static Bigint *
+s2b
+#ifdef KR_headers
+	(s, nd0, nd, y9) CONST char *s; int nd0, nd; unsigned long y9;
+#else
+	(CONST char *s, int nd0, int nd, unsigned long y9)
+#endif
+{
+	Bigint *b;
+	int i, k;
+	long x, y;
+
+	x = (nd + 8) / 9;
+	for (k = 0, y = 1; x > y; y <<= 1, k++) ;
+#ifdef Pack_32
+	b = Balloc(k);
+	b->x[0] = y9;
+	b->wds = 1;
+#else
+	b = Balloc(k+1);
+	b->x[0] = y9 & 0xffff;
+	b->wds = (b->x[1] = y9 >> 16) ? 2 : 1;
+#endif
+
+	i = 9;
+	if (9 < nd0) {
+		s += 9;
+		do
+			b = multadd(b, 10, *s++ - '0');
+		while (++i < nd0);
+		s++;
+	} else
+		s += 10;
+	for (; i < nd; i++)
+		b = multadd(b, 10, *s++ - '0');
+	return b;
+}
+
+ static int
+hi0bits
+#ifdef KR_headers
+	(x) register unsigned long x;
+#else
+	(register unsigned long x)
+#endif
+{
+	register int k = 0;
+
+	if (!(x & 0xffff0000)) {
+		k = 16;
+		x <<= 16;
+	}
+	if (!(x & 0xff000000)) {
+		k += 8;
+		x <<= 8;
+	}
+	if (!(x & 0xf0000000)) {
+		k += 4;
+		x <<= 4;
+	}
+	if (!(x & 0xc0000000)) {
+		k += 2;
+		x <<= 2;
+	}
+	if (!(x & 0x80000000)) {
+		k++;
+		if (!(x & 0x40000000))
+			return 32;
+	}
+	return k;
+}
+
+ static int
+lo0bits
+#ifdef KR_headers
+	(y) unsigned long *y;
+#else
+	(unsigned long *y)
+#endif
+{
+	register int k;
+	register unsigned long x = *y;
+
+	if (x & 7) {
+		if (x & 1)
+			return 0;
+		if (x & 2) {
+			*y = x >> 1;
+			return 1;
+		}
+		*y = x >> 2;
+		return 2;
+	}
+	k = 0;
+	if (!(x & 0xffff)) {
+		k = 16;
+		x >>= 16;
+	}
+	if (!(x & 0xff)) {
+		k += 8;
+		x >>= 8;
+	}
+	if (!(x & 0xf)) {
+		k += 4;
+		x >>= 4;
+	}
+	if (!(x & 0x3)) {
+		k += 2;
+		x >>= 2;
+	}
+	if (!(x & 1)) {
+		k++;
+		x >>= 1;
+		if (!x & 1)
+			return 32;
+	}
+	*y = x;
+	return k;
+}
+
+ static Bigint *
+i2b
+#ifdef KR_headers
+	(i) int i;
+#else
+	(int i)
+#endif
+{
+	Bigint *b;
+
+	b = Balloc(1);
+	b->x[0] = i;
+	b->wds = 1;
+	return b;
+	}
+
+ static Bigint *
+mult
+#ifdef KR_headers
+	(a, b) Bigint *a, *b;
+#else
+	(Bigint *a, Bigint *b)
+#endif
+{
+	Bigint *c;
+	int k, wa, wb, wc;
+	unsigned long carry, y, z;
+	unsigned long *x, *xa, *xae, *xb, *xbe, *xc, *xc0;
+#ifdef Pack_32
+	unsigned long z2;
+#endif
+
+	if (a->wds < b->wds) {
+		c = a;
+		a = b;
+		b = c;
+	}
+	k = a->k;
+	wa = a->wds;
+	wb = b->wds;
+	wc = wa + wb;
+	if (wc > a->maxwds)
+		k++;
+	c = Balloc(k);
+	for (x = c->x, xa = x + wc; x < xa; x++)
+		*x = 0;
+	xa = a->x;
+	xae = xa + wa;
+	xb = b->x;
+	xbe = xb + wb;
+	xc0 = c->x;
+#ifdef Pack_32
+	for (; xb < xbe; xb++, xc0++) {
+		if (y = *xb & 0xffff) {
+			x = xa;
+			xc = xc0;
+			carry = 0;
+			do {
+				z = (*x & 0xffff) * y + (*xc & 0xffff) + carry;
+				carry = z >> 16;
+				z2 = (*x++ >> 16) * y + (*xc >> 16) + carry;
+				carry = z2 >> 16;
+				Storeinc(xc, z2, z);
+			} while (x < xae);
+			*xc = carry;
+		}
+		if (y = *xb >> 16) {
+			x = xa;
+			xc = xc0;
+			carry = 0;
+			z2 = *xc;
+			do {
+				z = (*x & 0xffff) * y + (*xc >> 16) + carry;
+				carry = z >> 16;
+				Storeinc(xc, z, z2);
+				z2 = (*x++ >> 16) * y + (*xc & 0xffff) + carry;
+				carry = z2 >> 16;
+			} while (x < xae);
+			*xc = z2;
+		}
+	}
+#else
+	for (; xb < xbe; xc0++) {
+		if (y = *xb++) {
+			x = xa;
+			xc = xc0;
+			carry = 0;
+			do {
+				z = *x++ * y + *xc + carry;
+				carry = z >> 16;
+				*xc++ = z & 0xffff;
+			} while (x < xae);
+			*xc = carry;
+		}
+	}
+#endif
+	for (xc0 = c->x, xc = xc0 + wc; wc > 0 && !*--xc; --wc) ;
+	c->wds = wc;
+	return c;
+}
+
+ static Bigint *p5s;
+
+ static Bigint *
+pow5mult
+#ifdef KR_headers
+	(b, k) Bigint *b; int k;
+#else
+	(Bigint *b, int k)
+#endif
+{
+	Bigint *b1, *p5, *p51;
+	int i;
+	static int p05[3] = { 5, 25, 125 };
+
+	if (i = k & 3)
+		b = multadd(b, p05[i-1], 0);
+
+	if (!(k >>= 2))
+		return b;
+	if (!(p5 = p5s)) {
+		/* first time */
+		p5 = p5s = i2b(625);
+		p5->next = 0;
+	}
+	for (;;) {
+		if (k & 1) {
+			b1 = mult(b, p5);
+			Bfree(b);
+			b = b1;
+		}
+		if (!(k >>= 1))
+			break;
+		if (!(p51 = p5->next)) {
+			p51 = p5->next = mult(p5,p5);
+			p51->next = 0;
+		}
+		p5 = p51;
+	}
+	return b;
+}
+
+ static Bigint *
+lshift
+#ifdef KR_headers
+	(b, k) Bigint *b; int k;
+#else
+	(Bigint *b, int k)
+#endif
+{
+	int i, k1, n, n1;
+	Bigint *b1;
+	unsigned long *x, *x1, *xe, z;
+
+#ifdef Pack_32
+	n = k >> 5;
+#else
+	n = k >> 4;
+#endif
+	k1 = b->k;
+	n1 = n + b->wds + 1;
+	for (i = b->maxwds; n1 > i; i <<= 1)
+		k1++;
+	b1 = Balloc(k1);
+	x1 = b1->x;
+	for (i = 0; i < n; i++)
+		*x1++ = 0;
+	x = b->x;
+	xe = x + b->wds;
+#ifdef Pack_32
+	if (k &= 0x1f) {
+		k1 = 32 - k;
+		z = 0;
+		do {
+			*x1++ = *x << k | z;
+			z = *x++ >> k1;
+		} while (x < xe);
+		if (*x1 = z)
+			++n1;
+	}
+#else
+	if (k &= 0xf) {
+		k1 = 16 - k;
+		z = 0;
+		do {
+			*x1++ = *x << k  & 0xffff | z;
+			z = *x++ >> k1;
+		} while (x < xe);
+		if (*x1 = z)
+			++n1;
+	}
+#endif
+	else
+		do
+			*x1++ = *x++;
+		while (x < xe);
+	b1->wds = n1 - 1;
+	Bfree(b);
+	return b1;
+}
+
+ static int
+cmp
+#ifdef KR_headers
+	(a, b) Bigint *a, *b;
+#else
+	(Bigint *a, Bigint *b)
+#endif
+{
+	unsigned long *xa, *xa0, *xb, *xb0;
+	int i, j;
+
+	i = a->wds;
+	j = b->wds;
+#ifdef DEBUG
+	if (i > 1 && !a->x[i-1])
+		Bug("cmp called with a->x[a->wds-1] == 0");
+	if (j > 1 && !b->x[j-1])
+		Bug("cmp called with b->x[b->wds-1] == 0");
+#endif
+	if (i -= j)
+		return i;
+	xa0 = a->x;
+	xa = xa0 + j;
+	xb0 = b->x;
+	xb = xb0 + j;
+	for (;;) {
+		if (*--xa != *--xb)
+			return *xa < *xb ? -1 : 1;
+		if (xa <= xa0)
+			break;
+	}
+	return 0;
+}
+
+ static Bigint *
+diff
+#ifdef KR_headers
+	(a, b) Bigint *a, *b;
+#else
+	(Bigint *a, Bigint *b)
+#endif
+{
+	Bigint *c;
+	int i, wa, wb;
+	long borrow, y;	/* We need signed shifts here. */
+	unsigned long *xa, *xae, *xb, *xbe, *xc;
+#ifdef Pack_32
+	long z;
+#endif
+
+	i = cmp(a,b);
+	if (!i) {
+		c = Balloc(0);
+		c->wds = 1;
+		c->x[0] = 0;
+		return c;
+	}
+	if (i < 0) {
+		c = a;
+		a = b;
+		b = c;
+		i = 1;
+	} else
+		i = 0;
+	c = Balloc(a->k);
+	c->sign = i;
+	wa = a->wds;
+	xa = a->x;
+	xae = xa + wa;
+	wb = b->wds;
+	xb = b->x;
+	xbe = xb + wb;
+	xc = c->x;
+	borrow = 0;
+#ifdef Pack_32
+	do {
+		y = (*xa & 0xffff) - (*xb & 0xffff) + borrow;
+		borrow = y >> 16;
+		Sign_Extend(borrow, y);
+		z = (*xa++ >> 16) - (*xb++ >> 16) + borrow;
+		borrow = z >> 16;
+		Sign_Extend(borrow, z);
+		Storeinc(xc, z, y);
+	} while (xb < xbe);
+	while (xa < xae) {
+		y = (*xa & 0xffff) + borrow;
+		borrow = y >> 16;
+		Sign_Extend(borrow, y);
+		z = (*xa++ >> 16) + borrow;
+		borrow = z >> 16;
+		Sign_Extend(borrow, z);
+		Storeinc(xc, z, y);
+	}
+#else
+	do {
+		y = *xa++ - *xb++ + borrow;
+		borrow = y >> 16;
+		Sign_Extend(borrow, y);
+		*xc++ = y & 0xffff;
+	} while (xb < xbe);
+	while (xa < xae) {
+		y = *xa++ + borrow;
+		borrow = y >> 16;
+		Sign_Extend(borrow, y);
+		*xc++ = y & 0xffff;
+	}
+#endif
+	while (!*--xc)
+		wa--;
+	c->wds = wa;
+	return c;
+}
+
+ static double
+ulp
+#ifdef KR_headers
+	(x) double x;
+#else
+	(double x)
+#endif
+{
+	register long L;
+	double a;
+
+	L = (word0(x) & Exp_mask) - (P-1)*Exp_msk1;
+#ifndef Sudden_Underflow
+	if (L > 0) {
+#endif
+#ifdef IBM
+		L |= Exp_msk1 >> 4;
+#endif
+		word0(a) = L;
+		word1(a) = 0;
+#ifndef Sudden_Underflow
+	} else {
+		L = -L >> Exp_shift;
+		if (L < Exp_shift) {
+			word0(a) = 0x80000 >> L;
+			word1(a) = 0;
+		} else {
+			word0(a) = 0;
+			L -= Exp_shift;
+			word1(a) = L >= 31 ? 1 : 1 << 31 - L;
+		}
+	}
+#endif
+	return a;
+}
+
+ static double
+b2d
+#ifdef KR_headers
+	(a, e) Bigint *a; int *e;
+#else
+	(Bigint *a, int *e)
+#endif
+{
+	unsigned long *xa, *xa0, w, y, z;
+	int k;
+	double d;
+#ifdef VAX
+	unsigned long d0, d1;
+#else
+#define d0 word0(d)
+#define d1 word1(d)
+#endif
+
+	xa0 = a->x;
+	xa = xa0 + a->wds;
+	y = *--xa;
+#ifdef DEBUG
+	if (!y) Bug("zero y in b2d");
+#endif
+	k = hi0bits(y);
+	*e = 32 - k;
+#ifdef Pack_32
+	if (k < Ebits) {
+		d0 = Exp_1 | y >> Ebits - k;
+		w = xa > xa0 ? *--xa : 0;
+		d1 = y << (32-Ebits) + k | w >> Ebits - k;
+		goto ret_d;
+		}
+	z = xa > xa0 ? *--xa : 0;
+	if (k -= Ebits) {
+		d0 = Exp_1 | y << k | z >> 32 - k;
+		y = xa > xa0 ? *--xa : 0;
+		d1 = z << k | y >> 32 - k;
+	} else {
+		d0 = Exp_1 | y;
+		d1 = z;
+	}
+#else
+	if (k < Ebits + 16) {
+		z = xa > xa0 ? *--xa : 0;
+		d0 = Exp_1 | y << k - Ebits | z >> Ebits + 16 - k;
+		w = xa > xa0 ? *--xa : 0;
+		y = xa > xa0 ? *--xa : 0;
+		d1 = z << k + 16 - Ebits | w << k - Ebits | y >> 16 + Ebits - k;
+		goto ret_d;
+	}
+	z = xa > xa0 ? *--xa : 0;
+	w = xa > xa0 ? *--xa : 0;
+	k -= Ebits + 16;
+	d0 = Exp_1 | y << k + 16 | z << k | w >> 16 - k;
+	y = xa > xa0 ? *--xa : 0;
+	d1 = w << k + 16 | y << k;
+#endif
+ ret_d:
+#ifdef VAX
+	word0(d) = d0 >> 16 | d0 << 16;
+	word1(d) = d1 >> 16 | d1 << 16;
+#else
+#undef d0
+#undef d1
+#endif
+	return d;
+}
+
+ static Bigint *
+d2b
+#ifdef KR_headers
+	(d, e, bits) double d; int *e, *bits;
+#else
+	(double d, int *e, int *bits)
+#endif
+{
+	Bigint *b;
+	int de, i, k;
+	unsigned long *x, y, z;
+#ifdef VAX
+	unsigned long d0, d1;
+	d0 = word0(d) >> 16 | word0(d) << 16;
+	d1 = word1(d) >> 16 | word1(d) << 16;
+#else
+#define d0 word0(d)
+#define d1 word1(d)
+#endif
+
+#ifdef Pack_32
+	b = Balloc(1);
+#else
+	b = Balloc(2);
+#endif
+	x = b->x;
+
+	z = d0 & Frac_mask;
+	d0 &= 0x7fffffff;	/* clear sign bit, which we ignore */
+#ifdef Sudden_Underflow
+	de = (int)(d0 >> Exp_shift);
+#ifndef IBM
+	z |= Exp_msk11;
+#endif
+#else
+	if (de = (int)(d0 >> Exp_shift))
+		z |= Exp_msk1;
+#endif
+#ifdef Pack_32
+	if (y = d1) {
+		if (k = lo0bits(&y)) {
+			x[0] = y | z << 32 - k;
+			z >>= k;
+			}
+		else
+			x[0] = y;
+		i = b->wds = (x[1] = z) ? 2 : 1;
+	} else {
+#ifdef DEBUG
+		if (!z)
+			Bug("Zero passed to d2b");
+#endif
+		k = lo0bits(&z);
+		x[0] = z;
+		i = b->wds = 1;
+		k += 32;
+	}
+#else
+	if (y = d1) {
+		if (k = lo0bits(&y))
+			if (k >= 16) {
+				x[0] = y | z << 32 - k & 0xffff;
+				x[1] = z >> k - 16 & 0xffff;
+				x[2] = z >> k;
+				i = 2;
+			} else {
+				x[0] = y & 0xffff;
+				x[1] = y >> 16 | z << 16 - k & 0xffff;
+				x[2] = z >> k & 0xffff;
+				x[3] = z >> k+16;
+				i = 3;
+			}
+		else {
+			x[0] = y & 0xffff;
+			x[1] = y >> 16;
+			x[2] = z & 0xffff;
+			x[3] = z >> 16;
+			i = 3;
+		}
+	} else {
+#ifdef DEBUG
+		if (!z)
+			Bug("Zero passed to d2b");
+#endif
+		k = lo0bits(&z);
+		if (k >= 16) {
+			x[0] = z;
+			i = 0;
+		} else {
+			x[0] = z & 0xffff;
+			x[1] = z >> 16;
+			i = 1;
+		}
+		k += 32;
+	}
+	while (!x[i])
+		--i;
+	b->wds = i + 1;
+#endif
+#ifndef Sudden_Underflow
+	if (de) {
+#endif
+#ifdef IBM
+		*e = (de - Bias - (P-1) << 2) + k;
+		*bits = 4*P + 8 - k - hi0bits(word0(d) & Frac_mask);
+#else
+		*e = de - Bias - (P-1) + k;
+		*bits = P - k;
+#endif
+#ifndef Sudden_Underflow
+	} else {
+		*e = de - Bias - (P-1) + 1 + k;
+#ifdef Pack_32
+		*bits = 32*i - hi0bits(x[i-1]);
+#else
+		*bits = (i+2)*16 - hi0bits(x[i]);
+#endif
+	}
+#endif
+	return b;
+}
+#undef d0
+#undef d1
+
+ static double
+ratio
+#ifdef KR_headers
+	(a, b) Bigint *a, *b;
+#else
+	(Bigint *a, Bigint *b)
+#endif
+{
+	double da, db;
+	int k, ka, kb;
+
+	da = b2d(a, &ka);
+	db = b2d(b, &kb);
+#ifdef Pack_32
+	k = ka - kb + 32*(a->wds - b->wds);
+#else
+	k = ka - kb + 16*(a->wds - b->wds);
+#endif
+#ifdef IBM
+	if (k > 0) {
+		word0(da) += (k >> 2)*Exp_msk1;
+		if (k &= 3)
+			da *= 1 << k;
+	} else {
+		k = -k;
+		word0(db) += (k >> 2)*Exp_msk1;
+		if (k &= 3)
+			db *= 1 << k;
+	}
+#else
+	if (k > 0)
+		word0(da) += k*Exp_msk1;
+	else {
+		k = -k;
+		word0(db) += k*Exp_msk1;
+	}
+#endif
+	return da / db;
+}
+
+ static double
+tens[] = {
+		1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9,
+		1e10, 1e11, 1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19,
+		1e20, 1e21, 1e22
+#ifdef VAX
+		, 1e23, 1e24
+#endif
+		};
+
+ static double
+#ifdef IEEE_Arith
+bigtens[] = { 1e16, 1e32, 1e64, 1e128, 1e256 };
+static double tinytens[] = { 1e-16, 1e-32, 1e-64, 1e-128, 1e-256 };
+#define n_bigtens 5
+#else
+#ifdef IBM
+bigtens[] = { 1e16, 1e32, 1e64 };
+static double tinytens[] = { 1e-16, 1e-32, 1e-64 };
+#define n_bigtens 3
+#else
+bigtens[] = { 1e16, 1e32 };
+static double tinytens[] = { 1e-16, 1e-32 };
+#define n_bigtens 2
+#endif
+#endif
+
+ double
+strtod
+#ifdef KR_headers
+	(s00, se) CONST char *s00; char **se;
+#else
+	(CONST char *s00, char **se)
+#endif
+{
+	int bb2, bb5, bbe, bd2, bd5, bbbits, bs2, c, dsign,
+		 e, e1, esign, i, j, k, nd, nd0, nf, nz, nz0, sign;
+	CONST char *s, *s0, *s1;
+	double aadj, aadj1, adj, rv, rv0;
+	long L;
+	unsigned long y, z;
+	Bigint *bb, *bb1, *bd, *bd0, *bs, *delta;
+	sign = nz0 = nz = 0;
+	rv = 0.;
+	for (s = s00;;s++) switch(*s) {
+		case '-':
+			sign = 1;
+			/* no break */
+		case '+':
+			if (*++s)
+				goto break2;
+			/* no break */
+		case 0:
+			s = s00;
+			goto ret;
+		default:
+			if (isspace((unsigned char)*s))
+				continue;
+			goto break2;
+	}
+ break2:
+	if (*s == '0') {
+		nz0 = 1;
+		while (*++s == '0') ;
+		if (!*s)
+			goto ret;
+	}
+	s0 = s;
+	y = z = 0;
+	for (nd = nf = 0; (c = *s) >= '0' && c <= '9'; nd++, s++)
+		if (nd < 9)
+			y = 10*y + c - '0';
+		else if (nd < 16)
+			z = 10*z + c - '0';
+	nd0 = nd;
+	if (c == '.') {
+		c = *++s;
+		if (!nd) {
+			for (; c == '0'; c = *++s)
+				nz++;
+			if (c > '0' && c <= '9') {
+				s0 = s;
+				nf += nz;
+				nz = 0;
+				goto have_dig;
+			}
+			goto dig_done;
+		}
+		for (; c >= '0' && c <= '9'; c = *++s) {
+ have_dig:
+			nz++;
+			if (c -= '0') {
+				nf += nz;
+				for (i = 1; i < nz; i++)
+					if (nd++ < 9)
+						y *= 10;
+					else if (nd <= DBL_DIG + 1)
+						z *= 10;
+				if (nd++ < 9)
+					y = 10*y + c;
+				else if (nd <= DBL_DIG + 1)
+					z = 10*z + c;
+				nz = 0;
+			}
+		}
+	}
+ dig_done:
+	e = 0;
+	if (c == 'e' || c == 'E') {
+		if (!nd && !nz && !nz0) {
+			s = s00;
+			goto ret;
+		}
+		s00 = s;
+		esign = 0;
+		switch(c = *++s) {
+			case '-':
+				esign = 1;
+			case '+':
+				c = *++s;
+		}
+		if (c >= '0' && c <= '9') {
+			while (c == '0')
+				c = *++s;
+			if (c > '0' && c <= '9') {
+				L = c - '0';
+				s1 = s;
+				while ((c = *++s) >= '0' && c <= '9')
+					L = 10*L + c - '0';
+				if (s - s1 > 8 || L > 19999)
+					/* Avoid confusion from exponents
+					 * so large that e might overflow.
+					 */
+					e = 19999; /* safe for 16 bit ints */
+				else
+					e = (int)L;
+				if (esign)
+					e = -e;
+			} else
+				e = 0;
+		} else
+			s = s00;
+	}
+	if (!nd) {
+		if (!nz && !nz0)
+			s = s00;
+		goto ret;
+	}
+	e1 = e -= nf;
+
+	/* Now we have nd0 digits, starting at s0, followed by a
+	 * decimal point, followed by nd-nd0 digits.  The number we're
+	 * after is the integer represented by those digits times
+	 * 10**e */
+
+	if (!nd0)
+		nd0 = nd;
+	k = nd < DBL_DIG + 1 ? nd : DBL_DIG + 1;
+	rv = y;
+	if (k > 9)
+		rv = tens[k - 9] * rv + z;
+	if (nd <= DBL_DIG
+#ifndef RND_PRODQUOT
+		&& FLT_ROUNDS == 1
+#endif
+			) {
+		if (!e)
+			goto ret;
+		if (e > 0) {
+			if (e <= Ten_pmax) {
+#ifdef VAX
+				goto vax_ovfl_check;
+#else
+				/* rv = */ rounded_product(rv, tens[e]);
+				goto ret;
+#endif
+				}
+			i = DBL_DIG - nd;
+			if (e <= Ten_pmax + i) {
+				/* A fancier test would sometimes let us do
+				 * this for larger i values.
+				 */
+				e -= i;
+				rv *= tens[i];
+#ifdef VAX
+				/* VAX exponent range is so narrow we must
+				 * worry about overflow here...
+				 */
+ vax_ovfl_check:
+				word0(rv) -= P*Exp_msk1;
+				/* rv = */ rounded_product(rv, tens[e]);
+				if ((word0(rv) & Exp_mask)
+				 > Exp_msk1*(DBL_MAX_EXP+Bias-1-P))
+					goto ovfl;
+				word0(rv) += P*Exp_msk1;
+#else
+				/* rv = */ rounded_product(rv, tens[e]);
+#endif
+				goto ret;
+			}
+		}
+#ifndef Inaccurate_Divide
+		else if (e >= -Ten_pmax) {
+			/* rv = */ rounded_quotient(rv, tens[-e]);
+			goto ret;
+		}
+#endif
+	}
+	e1 += nd - k;
+
+	/* Get starting approximation = rv * 10**e1 */
+
+	if (e1 > 0) {
+		if (i = e1 & 15)
+			rv *= tens[i];
+		if (e1 &= ~15) {
+			if (e1 > DBL_MAX_10_EXP) {
+ ovfl:
+				errno = ERANGE;
+#ifdef __STDC__
+				rv = HUGE_VAL;
+#else
+				/* Can't trust HUGE_VAL */
+#ifdef IEEE_Arith
+				word0(rv) = Exp_mask;
+				word1(rv) = 0;
+#else
+				word0(rv) = Big0;
+				word1(rv) = Big1;
+#endif
+#endif
+				goto ret;
+			}
+			if (e1 >>= 4) {
+				for (j = 0; e1 > 1; j++, e1 >>= 1)
+					if (e1 & 1)
+						rv *= bigtens[j];
+			/* The last multiplication could overflow. */
+				word0(rv) -= P*Exp_msk1;
+				rv *= bigtens[j];
+				if ((z = word0(rv) & Exp_mask)
+				 > Exp_msk1*(DBL_MAX_EXP+Bias-P))
+					goto ovfl;
+				if (z > Exp_msk1*(DBL_MAX_EXP+Bias-1-P)) {
+					/* set to largest number */
+					/* (Can't trust DBL_MAX) */
+					word0(rv) = Big0;
+					word1(rv) = Big1;
+					}
+				else
+					word0(rv) += P*Exp_msk1;
+			}
+		}
+	} else if (e1 < 0) {
+		e1 = -e1;
+		if (i = e1 & 15)
+			rv /= tens[i];
+		if (e1 &= ~15) {
+			e1 >>= 4;
+			for (j = 0; e1 > 1; j++, e1 >>= 1)
+				if (e1 & 1)
+					rv *= tinytens[j];
+			/* The last multiplication could underflow. */
+			rv0 = rv;
+			rv *= tinytens[j];
+			if (!rv) {
+				rv = 2.*rv0;
+				rv *= tinytens[j];
+				if (!rv) {
+ undfl:
+					rv = 0.;
+					errno = ERANGE;
+					goto ret;
+					}
+				word0(rv) = Tiny0;
+				word1(rv) = Tiny1;
+				/* The refinement below will clean
+				 * this approximation up.
+				 */
+			}
+		}
+	}
+
+	/* Now the hard part -- adjusting rv to the correct value.*/
+
+	/* Put digits into bd: true value = bd * 10^e */
+
+	bd0 = s2b(s0, nd0, nd, y);
+
+	for (;;) {
+		bd = Balloc(bd0->k);
+		Bcopy(bd, bd0);
+		bb = d2b(rv, &bbe, &bbbits);	/* rv = bb * 2^bbe */
+		bs = i2b(1);
+
+		if (e >= 0) {
+			bb2 = bb5 = 0;
+			bd2 = bd5 = e;
+		} else {
+			bb2 = bb5 = -e;
+			bd2 = bd5 = 0;
+		}
+		if (bbe >= 0)
+			bb2 += bbe;
+		else
+			bd2 -= bbe;
+		bs2 = bb2;
+#ifdef Sudden_Underflow
+#ifdef IBM
+		j = 1 + 4*P - 3 - bbbits + ((bbe + bbbits - 1) & 3);
+#else
+		j = P + 1 - bbbits;
+#endif
+#else
+		i = bbe + bbbits - 1;	/* logb(rv) */
+		if (i < Emin)	/* denormal */
+			j = bbe + (P-Emin);
+		else
+			j = P + 1 - bbbits;
+#endif
+		bb2 += j;
+		bd2 += j;
+		i = bb2 < bd2 ? bb2 : bd2;
+		if (i > bs2)
+			i = bs2;
+		if (i > 0) {
+			bb2 -= i;
+			bd2 -= i;
+			bs2 -= i;
+			}
+		if (bb5 > 0) {
+			bs = pow5mult(bs, bb5);
+			bb1 = mult(bs, bb);
+			Bfree(bb);
+			bb = bb1;
+			}
+		if (bb2 > 0)
+			bb = lshift(bb, bb2);
+		if (bd5 > 0)
+			bd = pow5mult(bd, bd5);
+		if (bd2 > 0)
+			bd = lshift(bd, bd2);
+		if (bs2 > 0)
+			bs = lshift(bs, bs2);
+		delta = diff(bb, bd);
+		dsign = delta->sign;
+		delta->sign = 0;
+		i = cmp(delta, bs);
+		if (i < 0) {
+			/* Error is less than half an ulp -- check for
+			 * special case of mantissa a power of two.
+			 */
+			if (dsign || word1(rv) || word0(rv) & Bndry_mask)
+				break;
+			delta = lshift(delta,Log2P);
+			if (cmp(delta, bs) > 0)
+				goto drop_down;
+			break;
+		}
+		if (i == 0) {
+			/* exactly half-way between */
+			if (dsign) {
+				if ((word0(rv) & Bndry_mask1) == Bndry_mask1
+				 &&  word1(rv) == 0xffffffff) {
+					/*boundary case -- increment exponent*/
+					word0(rv) = (word0(rv) & Exp_mask)
+						+ Exp_msk1
+#ifdef IBM
+						| Exp_msk1 >> 4
+#endif
+						;
+					word1(rv) = 0;
+					break;
+				}
+			} else if (!(word0(rv) & Bndry_mask) && !word1(rv)) {
+ drop_down:
+				/* boundary case -- decrement exponent */
+#ifdef Sudden_Underflow
+				L = word0(rv) & Exp_mask;
+#ifdef IBM
+				if (L <  Exp_msk1)
+#else
+				if (L <= Exp_msk1)
+#endif
+					goto undfl;
+				L -= Exp_msk1;
+#else
+				L = (word0(rv) & Exp_mask) - Exp_msk1;
+#endif
+				word0(rv) = L | Bndry_mask1;
+				word1(rv) = 0xffffffff;
+#ifdef IBM
+				goto cont;
+#else
+				break;
+#endif
+			}
+#ifndef ROUND_BIASED
+			if (!(word1(rv) & LSB))
+				break;
+#endif
+			if (dsign)
+				rv += ulp(rv);
+#ifndef ROUND_BIASED
+			else {
+				rv -= ulp(rv);
+#ifndef Sudden_Underflow
+				if (!rv)
+					goto undfl;
+#endif
+			}
+#endif
+			break;
+		}
+		if ((aadj = ratio(delta, bs)) <= 2.) {
+			if (dsign)
+				aadj = aadj1 = 1.;
+			else if (word1(rv) || word0(rv) & Bndry_mask) {
+#ifndef Sudden_Underflow
+				if (word1(rv) == Tiny1 && !word0(rv))
+					goto undfl;
+#endif
+				aadj = 1.;
+				aadj1 = -1.;
+			} else {
+				/* special case -- power of FLT_RADIX to be */
+				/* rounded down... */
+
+				if (aadj < 2./FLT_RADIX)
+					aadj = 1./FLT_RADIX;
+				else
+					aadj *= 0.5;
+				aadj1 = -aadj;
+			}
+		} else {
+			aadj *= 0.5;
+			aadj1 = dsign ? aadj : -aadj;
+#ifdef Check_FLT_ROUNDS
+			switch(FLT_ROUNDS) {
+				case 2: /* towards +infinity */
+					aadj1 -= 0.5;
+					break;
+				case 0: /* towards 0 */
+				case 3: /* towards -infinity */
+					aadj1 += 0.5;
+			}
+#else
+			if (FLT_ROUNDS == 0)
+				aadj1 += 0.5;
+#endif
+		}
+		y = word0(rv) & Exp_mask;
+
+		/* Check for overflow */
+
+		if (y == Exp_msk1*(DBL_MAX_EXP+Bias-1)) {
+			rv0 = rv;
+			word0(rv) -= P*Exp_msk1;
+			adj = aadj1 * ulp(rv);
+			rv += adj;
+			if ((word0(rv) & Exp_mask) >=
+					Exp_msk1*(DBL_MAX_EXP+Bias-P)) {
+				if (word0(rv0) == Big0 && word1(rv0) == Big1)
+					goto ovfl;
+				word0(rv) = Big0;
+				word1(rv) = Big1;
+				goto cont;
+			} else
+				word0(rv) += P*Exp_msk1;
+		} else {
+#ifdef Sudden_Underflow
+			if ((word0(rv) & Exp_mask) <= P*Exp_msk1) {
+				rv0 = rv;
+				word0(rv) += P*Exp_msk1;
+				adj = aadj1 * ulp(rv);
+				rv += adj;
+#ifdef IBM
+				if ((word0(rv) & Exp_mask) <  P*Exp_msk1)
+#else
+				if ((word0(rv) & Exp_mask) <= P*Exp_msk1)
+#endif
+				{
+					if (word0(rv0) == Tiny0
+					 && word1(rv0) == Tiny1)
+						goto undfl;
+					word0(rv) = Tiny0;
+					word1(rv) = Tiny1;
+					goto cont;
+				} else
+					word0(rv) -= P*Exp_msk1;
+			} else {
+				adj = aadj1 * ulp(rv);
+				rv += adj;
+			}
+#else
+			/* Compute adj so that the IEEE rounding rules will
+			 * correctly round rv + adj in some half-way cases.
+			 * If rv * ulp(rv) is denormalized (i.e.,
+			 * y <= (P-1)*Exp_msk1), we must adjust aadj to avoid
+			 * trouble from bits lost to denormalization;
+			 * example: 1.2e-307 .
+			 */
+			if (y <= (P-1)*Exp_msk1 && aadj >= 1.) {
+				aadj1 = (double)(int)(aadj + 0.5);
+				if (!dsign)
+					aadj1 = -aadj1;
+			}
+			adj = aadj1 * ulp(rv);
+			rv += adj;
+#endif
+		}
+		z = word0(rv) & Exp_mask;
+		if (y == z) {
+			/* Can we stop now? */
+			L = aadj;
+			aadj -= L;
+			/* The tolerances below are conservative. */
+			if (dsign || word1(rv) || word0(rv) & Bndry_mask) {
+				if (aadj < .4999999 || aadj > .5000001)
+					break;
+			} else if (aadj < .4999999/FLT_RADIX)
+				break;
+		}
+ cont:
+		Bfree(bb);
+		Bfree(bd);
+		Bfree(bs);
+		Bfree(delta);
+	}
+	Bfree(bb);
+	Bfree(bd);
+	Bfree(bs);
+	Bfree(bd0);
+	Bfree(delta);
+ ret:
+	if (se)
+		*se = (char *)s;
+	return sign ? -rv : rv;
+}
+
+ static int
+quorem
+#ifdef KR_headers
+	(b, S) Bigint *b, *S;
+#else
+	(Bigint *b, Bigint *S)
+#endif
+{
+	int n;
+	long borrow, y;
+	unsigned long carry, q, ys;
+	unsigned long *bx, *bxe, *sx, *sxe;
+#ifdef Pack_32
+	long z;
+	unsigned long si, zs;
+#endif
+
+	n = S->wds;
+#ifdef DEBUG
+	/*debug*/ if (b->wds > n)
+	/*debug*/	Bug("oversize b in quorem");
+#endif
+	if (b->wds < n)
+		return 0;
+	sx = S->x;
+	sxe = sx + --n;
+	bx = b->x;
+	bxe = bx + n;
+	q = *bxe / (*sxe + 1);	/* ensure q <= true quotient */
+#ifdef DEBUG
+	/*debug*/ if (q > 9)
+	/*debug*/	Bug("oversized quotient in quorem");
+#endif
+	if (q) {
+		borrow = 0;
+		carry = 0;
+		do {
+#ifdef Pack_32
+			si = *sx++;
+			ys = (si & 0xffff) * q + carry;
+			zs = (si >> 16) * q + (ys >> 16);
+			carry = zs >> 16;
+			y = (*bx & 0xffff) - (ys & 0xffff) + borrow;
+			borrow = y >> 16;
+			Sign_Extend(borrow, y);
+			z = (*bx >> 16) - (zs & 0xffff) + borrow;
+			borrow = z >> 16;
+			Sign_Extend(borrow, z);
+			Storeinc(bx, z, y);
+#else
+			ys = *sx++ * q + carry;
+			carry = ys >> 16;
+			y = *bx - (ys & 0xffff) + borrow;
+			borrow = y >> 16;
+			Sign_Extend(borrow, y);
+			*bx++ = y & 0xffff;
+#endif
+		} while (sx <= sxe);
+		if (!*bxe) {
+			bx = b->x;
+			while (--bxe > bx && !*bxe)
+				--n;
+			b->wds = n;
+		}
+	}
+	if (cmp(b, S) >= 0) {
+		q++;
+		borrow = 0;
+		carry = 0;
+		bx = b->x;
+		sx = S->x;
+		do {
+#ifdef Pack_32
+			si = *sx++;
+			ys = (si & 0xffff) + carry;
+			zs = (si >> 16) + (ys >> 16);
+			carry = zs >> 16;
+			y = (*bx & 0xffff) - (ys & 0xffff) + borrow;
+			borrow = y >> 16;
+			Sign_Extend(borrow, y);
+			z = (*bx >> 16) - (zs & 0xffff) + borrow;
+			borrow = z >> 16;
+			Sign_Extend(borrow, z);
+			Storeinc(bx, z, y);
+#else
+			ys = *sx++ + carry;
+			carry = ys >> 16;
+			y = *bx - (ys & 0xffff) + borrow;
+			borrow = y >> 16;
+			Sign_Extend(borrow, y);
+			*bx++ = y & 0xffff;
+#endif
+		} while (sx <= sxe);
+		bx = b->x;
+		bxe = bx + n;
+		if (!*bxe) {
+			while (--bxe > bx && !*bxe)
+				--n;
+			b->wds = n;
+		}
+	}
+	return q;
+}
+
+/* dtoa for IEEE arithmetic (dmg): convert double to ASCII string.
+ *
+ * Inspired by "How to Print Floating-Point Numbers Accurately" by
+ * Guy L. Steele, Jr. and Jon L. White [Proc. ACM SIGPLAN '90, pp. 92-101].
+ *
+ * Modifications:
+ *	1. Rather than iterating, we use a simple numeric overestimate
+ *	   to determine k = floor(log10(d)).  We scale relevant
+ *	   quantities using O(log2(k)) rather than O(k) multiplications.
+ *	2. For some modes > 2 (corresponding to ecvt and fcvt), we don't
+ *	   try to generate digits strictly left to right.  Instead, we
+ *	   compute with fewer bits and propagate the carry if necessary
+ *	   when rounding the final digit up.  This is often faster.
+ *	3. Under the assumption that input will be rounded nearest,
+ *	   mode 0 renders 1e23 as 1e23 rather than 9.999999999999999e22.
+ *	   That is, we allow equality in stopping tests when the
+ *	   round-nearest rule will give the same floating-point value
+ *	   as would satisfaction of the stopping test with strict
+ *	   inequality.
+ *	4. We remove common factors of powers of 2 from relevant
+ *	   quantities.
+ *	5. When converting floating-point integers less than 1e16,
+ *	   we use floating-point arithmetic rather than resorting
+ *	   to multiple-precision integers.
+ *	6. When asked to produce fewer than 15 digits, we first try
+ *	   to get by with floating-point arithmetic; we resort to
+ *	   multiple-precision integer arithmetic only if we cannot
+ *	   guarantee that the floating-point calculation has given
+ *	   the correctly rounded result.  For k requested digits and
+ *	   "uniformly" distributed input, the probability is
+ *	   something like 10^(k-15) that we must resort to the long
+ *	   calculation.
+ */
+
+char *
+__dtoa
+#ifdef KR_headers
+	(d, mode, ndigits, decpt, sign, rve)
+	double d; int mode, ndigits, *decpt, *sign; char **rve;
+#else
+	(double d, int mode, int ndigits, int *decpt, int *sign, char **rve)
+#endif
+{
+ /*	Arguments ndigits, decpt, sign are similar to those
+	of ecvt and fcvt; trailing zeros are suppressed from
+	the returned string.  If not null, *rve is set to point
+	to the end of the return value.  If d is +-Infinity or NaN,
+	then *decpt is set to 9999.
+
+	mode:
+		0 ==> shortest string that yields d when read in
+			and rounded to nearest.
+		1 ==> like 0, but with Steele & White stopping rule;
+			e.g. with IEEE P754 arithmetic , mode 0 gives
+			1e23 whereas mode 1 gives 9.999999999999999e22.
+		2 ==> max(1,ndigits) significant digits.  This gives a
+			return value similar to that of ecvt, except
+			that trailing zeros are suppressed.
+		3 ==> through ndigits past the decimal point.  This
+			gives a return value similar to that from fcvt,
+			except that trailing zeros are suppressed, and
+			ndigits can be negative.
+		4-9 should give the same return values as 2-3, i.e.,
+			4 <= mode <= 9 ==> same return as mode
+			2 + (mode & 1).  These modes are mainly for
+			debugging; often they run slower but sometimes
+			faster than modes 2-3.
+		4,5,8,9 ==> left-to-right digit generation.
+		6-9 ==> don't try fast floating-point estimate
+			(if applicable).
+
+		Values of mode other than 0-9 are treated as mode 0.
+
+		Sufficient space is allocated to the return value
+		to hold the suppressed trailing zeros.
+	*/
+
+	int bbits, b2, b5, be, dig, i, ieps, ilim, ilim0, ilim1,
+		j, j1, k, k0, k_check, leftright, m2, m5, s2, s5,
+		spec_case, try_quick;
+	long L;
+#ifndef Sudden_Underflow
+	int denorm;
+	unsigned long x;
+#endif
+	Bigint *b, *b1, *delta, *mlo, *mhi, *S;
+	double d2, ds, eps;
+	char *s, *s0;
+	static Bigint *result;
+	static int result_k;
+
+	if (result) {
+		result->k = result_k;
+		result->maxwds = 1 << result_k;
+		Bfree(result);
+		result = 0;
+	}
+
+	if (word0(d) & Sign_bit) {
+		/* set sign for everything, including 0's and NaNs */
+		*sign = 1;
+		word0(d) &= ~Sign_bit;	/* clear sign bit */
+	}
+	else
+		*sign = 0;
+
+#if defined(IEEE_Arith) + defined(VAX)
+#ifdef IEEE_Arith
+	if ((word0(d) & Exp_mask) == Exp_mask)
+#else
+	if (word0(d)  == 0x8000)
+#endif
+	{
+		/* Infinity or NaN */
+		*decpt = 9999;
+		s =
+#ifdef IEEE_Arith
+			!word1(d) && !(word0(d) & 0xfffff) ? "Infinity" :
+#endif
+				"NaN";
+		if (rve)
+			*rve =
+#ifdef IEEE_Arith
+				s[3] ? s + 8 :
+#endif
+						s + 3;
+		return s;
+	}
+#endif
+#ifdef IBM
+	d += 0; /* normalize */
+#endif
+	if (!d) {
+		*decpt = 1;
+		s = "0";
+		if (rve)
+			*rve = s + 1;
+		return s;
+	}
+
+	b = d2b(d, &be, &bbits);
+#ifdef Sudden_Underflow
+	i = (int)(word0(d) >> Exp_shift1 & (Exp_mask>>Exp_shift1));
+#else
+	if (i = (int)(word0(d) >> Exp_shift1 & (Exp_mask>>Exp_shift1))) {
+#endif
+		d2 = d;
+		word0(d2) &= Frac_mask1;
+		word0(d2) |= Exp_11;
+#ifdef IBM
+		if (j = 11 - hi0bits(word0(d2) & Frac_mask))
+			d2 /= 1 << j;
+#endif
+
+		/* log(x)	~=~ log(1.5) + (x-1.5)/1.5
+		 * log10(x)	 =  log(x) / log(10)
+		 *		~=~ log(1.5)/log(10) + (x-1.5)/(1.5*log(10))
+		 * log10(d) = (i-Bias)*log(2)/log(10) + log10(d2)
+		 *
+		 * This suggests computing an approximation k to log10(d) by
+		 *
+		 * k = (i - Bias)*0.301029995663981
+		 *	+ ( (d2-1.5)*0.289529654602168 + 0.176091259055681 );
+		 *
+		 * We want k to be too large rather than too small.
+		 * The error in the first-order Taylor series approximation
+		 * is in our favor, so we just round up the constant enough
+		 * to compensate for any error in the multiplication of
+		 * (i - Bias) by 0.301029995663981; since |i - Bias| <= 1077,
+		 * and 1077 * 0.30103 * 2^-52 ~=~ 7.2e-14,
+		 * adding 1e-13 to the constant term more than suffices.
+		 * Hence we adjust the constant term to 0.1760912590558.
+		 * (We could get a more accurate k by invoking log10,
+		 *  but this is probably not worthwhile.)
+		 */
+
+		i -= Bias;
+#ifdef IBM
+		i <<= 2;
+		i += j;
+#endif
+#ifndef Sudden_Underflow
+		denorm = 0;
+	} else {
+		/* d is denormalized */
+
+		i = bbits + be + (Bias + (P-1) - 1);
+		x = i > 32  ? word0(d) << 64 - i | word1(d) >> i - 32
+			    : word1(d) << 32 - i;
+		d2 = x;
+		word0(d2) -= 31*Exp_msk1; /* adjust exponent */
+		i -= (Bias + (P-1) - 1) + 1;
+		denorm = 1;
+	}
+#endif
+	ds = (d2-1.5)*0.289529654602168 + 0.1760912590558 + i*0.301029995663981;
+	k = (int)ds;
+	if (ds < 0. && ds != k)
+		k--;	/* want k = floor(ds) */
+	k_check = 1;
+	if (k >= 0 && k <= Ten_pmax) {
+		if (d < tens[k])
+			k--;
+		k_check = 0;
+	}
+	j = bbits - i - 1;
+	if (j >= 0) {
+		b2 = 0;
+		s2 = j;
+	} else {
+		b2 = -j;
+		s2 = 0;
+	}
+	if (k >= 0) {
+		b5 = 0;
+		s5 = k;
+		s2 += k;
+	} else {
+		b2 -= k;
+		b5 = -k;
+		s5 = 0;
+	}
+	if (mode < 0 || mode > 9)
+		mode = 0;
+	try_quick = 1;
+	if (mode > 5) {
+		mode -= 4;
+		try_quick = 0;
+	}
+	leftright = 1;
+	switch(mode) {
+		case 0:
+		case 1:
+			ilim = ilim1 = -1;
+			i = 18;
+			ndigits = 0;
+			break;
+		case 2:
+			leftright = 0;
+			/* no break */
+		case 4:
+			if (ndigits <= 0)
+				ndigits = 1;
+			ilim = ilim1 = i = ndigits;
+			break;
+		case 3:
+			leftright = 0;
+			/* no break */
+		case 5:
+			i = ndigits + k + 1;
+			ilim = i;
+			ilim1 = i - 1;
+			if (i <= 0)
+				i = 1;
+	}
+	j = sizeof(unsigned long);
+	for (result_k = 0; sizeof(Bigint) - sizeof(unsigned long) + j < i;
+		j <<= 1) result_k++;
+	result = Balloc(result_k);
+	s = s0 = (char *)result;
+
+	if (ilim >= 0 && ilim <= Quick_max && try_quick) {
+
+		/* Try to get by with floating-point arithmetic. */
+
+		i = 0;
+		d2 = d;
+		k0 = k;
+		ilim0 = ilim;
+		ieps = 2; /* conservative */
+		if (k > 0) {
+			ds = tens[k&0xf];
+			j = k >> 4;
+			if (j & Bletch) {
+				/* prevent overflows */
+				j &= Bletch - 1;
+				d /= bigtens[n_bigtens-1];
+				ieps++;
+			}
+			for (; j; j >>= 1, i++)
+				if (j & 1) {
+					ieps++;
+					ds *= bigtens[i];
+				}
+			d /= ds;
+		} else if (j1 = -k) {
+			d *= tens[j1 & 0xf];
+			for (j = j1 >> 4; j; j >>= 1, i++)
+				if (j & 1) {
+					ieps++;
+					d *= bigtens[i];
+				}
+		}
+		if (k_check && d < 1. && ilim > 0) {
+			if (ilim1 <= 0)
+				goto fast_failed;
+			ilim = ilim1;
+			k--;
+			d *= 10.;
+			ieps++;
+		}
+		eps = ieps*d + 7.;
+		word0(eps) -= (P-1)*Exp_msk1;
+		if (ilim == 0) {
+			S = mhi = 0;
+			d -= 5.;
+			if (d > eps)
+				goto one_digit;
+			if (d < -eps)
+				goto no_digits;
+			goto fast_failed;
+		}
+#ifndef No_leftright
+		if (leftright) {
+			/* Use Steele & White method of only
+			 * generating digits needed.
+			 */
+			eps = 0.5/tens[ilim-1] - eps;
+			for (i = 0;;) {
+				L = d;
+				d -= L;
+				*s++ = '0' + (int)L;
+				if (d < eps)
+					goto ret1;
+				if (1. - d < eps)
+					goto bump_up;
+				if (++i >= ilim)
+					break;
+				eps *= 10.;
+				d *= 10.;
+			}
+		} else {
+#endif
+			/* Generate ilim digits, then fix them up. */
+			eps *= tens[ilim-1];
+			for (i = 1;; i++, d *= 10.) {
+				L = d;
+				d -= L;
+				*s++ = '0' + (int)L;
+				if (i == ilim) {
+					if (d > 0.5 + eps)
+						goto bump_up;
+					else if (d < 0.5 - eps) {
+						while (*--s == '0');
+						s++;
+						goto ret1;
+					}
+					break;
+				}
+			}
+#ifndef No_leftright
+		}
+#endif
+ fast_failed:
+		s = s0;
+		d = d2;
+		k = k0;
+		ilim = ilim0;
+	}
+
+	/* Do we have a "small" integer? */
+
+	if (be >= 0 && k <= Int_max) {
+		/* Yes. */
+		ds = tens[k];
+		if (ndigits < 0 && ilim <= 0) {
+			S = mhi = 0;
+			if (ilim < 0 || d <= 5*ds)
+				goto no_digits;
+			goto one_digit;
+		}
+		for (i = 1;; i++) {
+			L = d / ds;
+			d -= L*ds;
+#ifdef Check_FLT_ROUNDS
+			/* If FLT_ROUNDS == 2, L will usually be high by 1 */
+			if (d < 0) {
+				L--;
+				d += ds;
+			}
+#endif
+			*s++ = '0' + (int)L;
+			if (i == ilim) {
+				d += d;
+				if (d > ds || d == ds && L & 1) {
+ bump_up:
+					while (*--s == '9')
+						if (s == s0) {
+							k++;
+							*s = '0';
+							break;
+						}
+					++*s++;
+				}
+				break;
+			}
+			if (!(d *= 10.))
+				break;
+		}
+		goto ret1;
+	}
+
+	m2 = b2;
+	m5 = b5;
+	mhi = mlo = 0;
+	if (leftright) {
+		if (mode < 2) {
+			i =
+#ifndef Sudden_Underflow
+				denorm ? be + (Bias + (P-1) - 1 + 1) :
+#endif
+#ifdef IBM
+				1 + 4*P - 3 - bbits + ((bbits + be - 1) & 3);
+#else
+				1 + P - bbits;
+#endif
+		} else {
+			j = ilim - 1;
+			if (m5 >= j)
+				m5 -= j;
+			else {
+				s5 += j -= m5;
+				b5 += j;
+				m5 = 0;
+			}
+			if ((i = ilim) < 0) {
+				m2 -= i;
+				i = 0;
+			}
+		}
+		b2 += i;
+		s2 += i;
+		mhi = i2b(1);
+	}
+	if (m2 > 0 && s2 > 0) {
+		i = m2 < s2 ? m2 : s2;
+		b2 -= i;
+		m2 -= i;
+		s2 -= i;
+	}
+	if (b5 > 0) {
+		if (leftright) {
+			if (m5 > 0) {
+				mhi = pow5mult(mhi, m5);
+				b1 = mult(mhi, b);
+				Bfree(b);
+				b = b1;
+				}
+			if (j = b5 - m5)
+				b = pow5mult(b, j);
+		} else
+			b = pow5mult(b, b5);
+	}
+	S = i2b(1);
+	if (s5 > 0)
+		S = pow5mult(S, s5);
+
+	/* Check for special case that d is a normalized power of 2. */
+
+	if (mode < 2) {
+		if (!word1(d) && !(word0(d) & Bndry_mask)
+#ifndef Sudden_Underflow
+		 && word0(d) & Exp_mask
+#endif
+				) {
+			/* The special case */
+			b2 += Log2P;
+			s2 += Log2P;
+			spec_case = 1;
+		} else
+			spec_case = 0;
+	}
+
+	/* Arrange for convenient computation of quotients:
+	 * shift left if necessary so divisor has 4 leading 0 bits.
+	 *
+	 * Perhaps we should just compute leading 28 bits of S once
+	 * and for all and pass them and a shift to quorem, so it
+	 * can do shifts and ors to compute the numerator for q.
+	 */
+#ifdef Pack_32
+	if (i = ((s5 ? 32 - hi0bits(S->x[S->wds-1]) : 1) + s2) & 0x1f)
+		i = 32 - i;
+#else
+	if (i = ((s5 ? 32 - hi0bits(S->x[S->wds-1]) : 1) + s2) & 0xf)
+		i = 16 - i;
+#endif
+	if (i > 4) {
+		i -= 4;
+		b2 += i;
+		m2 += i;
+		s2 += i;
+	} else if (i < 4) {
+		i += 28;
+		b2 += i;
+		m2 += i;
+		s2 += i;
+	}
+	if (b2 > 0)
+		b = lshift(b, b2);
+	if (s2 > 0)
+		S = lshift(S, s2);
+	if (k_check) {
+		if (cmp(b,S) < 0) {
+			k--;
+			b = multadd(b, 10, 0);	/* we botched the k estimate */
+			if (leftright)
+				mhi = multadd(mhi, 10, 0);
+			ilim = ilim1;
+		}
+	}
+	if (ilim <= 0 && mode > 2) {
+		if (ilim < 0 || cmp(b,S = multadd(S,5,0)) <= 0) {
+			/* no digits, fcvt style */
+ no_digits:
+			k = -1 - ndigits;
+			goto ret;
+		}
+ one_digit:
+		*s++ = '1';
+		k++;
+		goto ret;
+	}
+	if (leftright) {
+		if (m2 > 0)
+			mhi = lshift(mhi, m2);
+
+		/* Compute mlo -- check for special case
+		 * that d is a normalized power of 2.
+		 */
+
+		mlo = mhi;
+		if (spec_case) {
+			mhi = Balloc(mhi->k);
+			Bcopy(mhi, mlo);
+			mhi = lshift(mhi, Log2P);
+		}
+
+		for (i = 1;;i++) {
+			dig = quorem(b,S) + '0';
+			/* Do we yet have the shortest decimal string
+			 * that will round to d?
+			 */
+			j = cmp(b, mlo);
+			delta = diff(S, mhi);
+			j1 = delta->sign ? 1 : cmp(b, delta);
+			Bfree(delta);
+#ifndef ROUND_BIASED
+			if (j1 == 0 && !mode && !(word1(d) & 1)) {
+				if (dig == '9')
+					goto round_9_up;
+				if (j > 0)
+					dig++;
+				*s++ = dig;
+				goto ret;
+			}
+#endif
+			if (j < 0 || j == 0 && !mode
+#ifndef ROUND_BIASED
+							&& !(word1(d) & 1)
+#endif
+					) {
+				if (j1 > 0) {
+					b = lshift(b, 1);
+					j1 = cmp(b, S);
+					if ((j1 > 0 || j1 == 0 && dig & 1)
+					&& dig++ == '9')
+						goto round_9_up;
+				}
+				*s++ = dig;
+				goto ret;
+			}
+			if (j1 > 0) {
+				if (dig == '9') { /* possible if i == 1 */
+ round_9_up:
+					*s++ = '9';
+					goto roundoff;
+				}
+				*s++ = dig + 1;
+				goto ret;
+			}
+			*s++ = dig;
+			if (i == ilim)
+				break;
+			b = multadd(b, 10, 0);
+			if (mlo == mhi)
+				mlo = mhi = multadd(mhi, 10, 0);
+			else {
+				mlo = multadd(mlo, 10, 0);
+				mhi = multadd(mhi, 10, 0);
+			}
+		}
+	} else
+		for (i = 1;; i++) {
+			*s++ = dig = quorem(b,S) + '0';
+			if (i >= ilim)
+				break;
+			b = multadd(b, 10, 0);
+		}
+
+	/* Round off last digit */
+
+	b = lshift(b, 1);
+	j = cmp(b, S);
+	if (j > 0 || j == 0 && dig & 1) {
+ roundoff:
+		while (*--s == '9')
+			if (s == s0) {
+				k++;
+				*s++ = '1';
+				goto ret;
+			}
+		++*s++;
+	} else {
+		while (*--s == '0');
+		s++;
+	}
+ ret:
+	Bfree(S);
+	if (mhi) {
+		if (mlo && mlo != mhi)
+			Bfree(mlo);
+		Bfree(mhi);
+	}
+ ret1:
+	Bfree(b);
+	if (s == s0) {	/* don't return empty string */
+		*s++ = '0';
+		k = 0;
+	}
+	*s = 0;
+	*decpt = k + 1;
+	if (rve)
+		*rve = s;
+	return s0;
+	}
+#ifdef __cplusplus
+}
+#endif
diff --git a/lib/libc/stdlib/strtol.3 b/lib/libc/stdlib/strtol.3
new file mode 100644
index 0000000..4ebf069
--- /dev/null
+++ b/lib/libc/stdlib/strtol.3
@@ -0,0 +1,168 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strtol.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt STRTOL 3
+.Os
+.Sh NAME
+.Nm strtol, strtoq
+.Nd convert string value to a long or quad_t integer
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Fd #include <limits.h>
+.Ft long
+.Fn strtol "char *nptr" "char **endptr" "int base"
+
+.Fd #include <sys/types.h>
+.Fd #include <stdlib.h>
+.Fd #include <limits.h>
+.Ft quad_t
+.Fn strtoq "char *nptr" "char **endptr" "int base"
+.Sh DESCRIPTION
+The
+.Fn strtol
+function
+converts the string in
+.Fa nptr
+to a
+.Em long
+value.
+The
+.Fn strtoq
+function
+converts the string in
+.Fa nptr
+to a
+.Em quad_t
+value.
+The conversion is done according to the given
+.Fa base ,
+which must be between 2 and 36 inclusive,
+or be the special value 0.
+.Pp
+The string may begin with an arbitrary amount of white space
+(as determined by
+.Xr isspace 3 )
+followed by a single optional
+.Ql +
+or
+.Ql -
+sign.
+If
+.Fa base
+is zero or 16,
+the string may then include a
+.Ql 0x
+prefix,
+and the number will be read in base 16; otherwise, a zero
+.Fa base
+is taken as 10 (decimal) unless the next character is
+.Ql 0 ,
+in which case it is taken as 8 (octal).
+.Pp
+The remainder of the string is converted to a
+.Em long
+value in the obvious manner,
+stopping at the first character which is not a valid digit
+in the given base.
+(In bases above 10, the letter
+.Ql A
+in either upper or lower case
+represents 10,
+.Ql B
+represents 11, and so forth, with
+.Ql Z
+representing 35.)
+.Pp
+If
+.Fa endptr
+is non nil,
+.Fn strtol
+stores the address of the first invalid character in
+.Fa *endptr .
+If there were no digits at all, however,
+.Fn strtol
+stores the original value of
+.Fa nptr
+in
+.Fa *endptr .
+(Thus, if
+.Fa *nptr
+is not
+.Ql \e0
+but
+.Fa **endptr
+is
+.Ql \e0
+on return, the entire string was valid.)
+.Sh RETURN VALUES
+The
+.Fn strtol
+function
+returns the result of the conversion,
+unless the value would underflow or overflow.
+If an underflow occurs,
+.Fn strtol
+returns
+.Dv LONG_MIN .
+If an overflow occurs,
+.Fn strtol
+returns
+.Dv LONG_MAX .
+In both cases,
+.Va errno
+is set to
+.Er ERANGE .
+.Sh ERRORS
+.Bl -tag -width [ERANGE]
+.It Bq Er ERANGE
+The given string was out of range; the value converted has been clamped.
+.El
+.Sh SEE ALSO
+.Xr atof 3 ,
+.Xr atoi 3 ,
+.Xr atol 3 ,
+.Xr strtod 3 ,
+.Xr strtoul 3
+.Sh STANDARDS
+The
+.Fn strtol
+function
+conforms to
+.St -ansiC .
+.Sh BUGS
+Ignores the current locale.
diff --git a/lib/libc/stdlib/strtol.c b/lib/libc/stdlib/strtol.c
new file mode 100644
index 0000000..3e6ec70
--- /dev/null
+++ b/lib/libc/stdlib/strtol.c
@@ -0,0 +1,131 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strtol.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <limits.h>
+#include <ctype.h>
+#include <errno.h>
+#include <stdlib.h>
+
+
+/*
+ * Convert a string to a long integer.
+ *
+ * Ignores `locale' stuff.  Assumes that the upper and lower case
+ * alphabets and digits are each contiguous.
+ */
+long
+strtol(nptr, endptr, base)
+	const char *nptr;
+	char **endptr;
+	register int base;
+{
+	register const char *s = nptr;
+	register unsigned long acc;
+	register unsigned char c;
+	register unsigned long cutoff;
+	register int neg = 0, any, cutlim;
+
+	/*
+	 * Skip white space and pick up leading +/- sign if any.
+	 * If base is 0, allow 0x for hex and 0 for octal, else
+	 * assume decimal; if base is already 16, allow 0x.
+	 */
+	do {
+		c = *s++;
+	} while (isspace(c));
+	if (c == '-') {
+		neg = 1;
+		c = *s++;
+	} else if (c == '+')
+		c = *s++;
+	if ((base == 0 || base == 16) &&
+	    c == '0' && (*s == 'x' || *s == 'X')) {
+		c = s[1];
+		s += 2;
+		base = 16;
+	}
+	if (base == 0)
+		base = c == '0' ? 8 : 10;
+
+	/*
+	 * Compute the cutoff value between legal numbers and illegal
+	 * numbers.  That is the largest legal value, divided by the
+	 * base.  An input number that is greater than this value, if
+	 * followed by a legal input character, is too big.  One that
+	 * is equal to this value may be valid or not; the limit
+	 * between valid and invalid numbers is then based on the last
+	 * digit.  For instance, if the range for longs is
+	 * [-2147483648..2147483647] and the input base is 10,
+	 * cutoff will be set to 214748364 and cutlim to either
+	 * 7 (neg==0) or 8 (neg==1), meaning that if we have accumulated
+	 * a value > 214748364, or equal but the next digit is > 7 (or 8),
+	 * the number is too big, and we will return a range error.
+	 *
+	 * Set any if any `digits' consumed; make it negative to indicate
+	 * overflow.
+	 */
+	cutoff = neg ? -(unsigned long)LONG_MIN : LONG_MAX;
+	cutlim = cutoff % (unsigned long)base;
+	cutoff /= (unsigned long)base;
+	for (acc = 0, any = 0;; c = *s++) {
+		if (!isascii(c))
+			break;
+		if (isdigit(c))
+			c -= '0';
+		else if (isalpha(c))
+			c -= isupper(c) ? 'A' - 10 : 'a' - 10;
+		else
+			break;
+		if (c >= base)
+			break;
+		if (any < 0 || acc > cutoff || acc == cutoff && c > cutlim)
+			any = -1;
+		else {
+			any = 1;
+			acc *= base;
+			acc += c;
+		}
+	}
+	if (any < 0) {
+		acc = neg ? LONG_MIN : LONG_MAX;
+		errno = ERANGE;
+	} else if (neg)
+		acc = -acc;
+	if (endptr != 0)
+		*endptr = (char *)(any ? s - 1 : nptr);
+	return (acc);
+}
diff --git a/lib/libc/stdlib/strtoll.c b/lib/libc/stdlib/strtoll.c
new file mode 100644
index 0000000..a5720df
--- /dev/null
+++ b/lib/libc/stdlib/strtoll.c
@@ -0,0 +1,138 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strtoq.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <limits.h>
+#include <errno.h>
+#include <ctype.h>
+#include <stdlib.h>
+
+/*
+ * Convert a string to a quad integer.
+ *
+ * Ignores `locale' stuff.  Assumes that the upper and lower case
+ * alphabets and digits are each contiguous.
+ */
+quad_t
+strtoq(nptr, endptr, base)
+	const char *nptr;
+	char **endptr;
+	register int base;
+{
+	register const char *s;
+	register u_quad_t acc;
+	register unsigned char c;
+	register u_quad_t qbase, cutoff;
+	register int neg, any, cutlim;
+
+	/*
+	 * Skip white space and pick up leading +/- sign if any.
+	 * If base is 0, allow 0x for hex and 0 for octal, else
+	 * assume decimal; if base is already 16, allow 0x.
+	 */
+	s = nptr;
+	do {
+		c = *s++;
+	} while (isspace(c));
+	if (c == '-') {
+		neg = 1;
+		c = *s++;
+	} else {
+		neg = 0;
+		if (c == '+')
+			c = *s++;
+	}
+	if ((base == 0 || base == 16) &&
+	    c == '0' && (*s == 'x' || *s == 'X')) {
+		c = s[1];
+		s += 2;
+		base = 16;
+	}
+	if (base == 0)
+		base = c == '0' ? 8 : 10;
+
+	/*
+	 * Compute the cutoff value between legal numbers and illegal
+	 * numbers.  That is the largest legal value, divided by the
+	 * base.  An input number that is greater than this value, if
+	 * followed by a legal input character, is too big.  One that
+	 * is equal to this value may be valid or not; the limit
+	 * between valid and invalid numbers is then based on the last
+	 * digit.  For instance, if the range for quads is
+	 * [-9223372036854775808..9223372036854775807] and the input base
+	 * is 10, cutoff will be set to 922337203685477580 and cutlim to
+	 * either 7 (neg==0) or 8 (neg==1), meaning that if we have
+	 * accumulated a value > 922337203685477580, or equal but the
+	 * next digit is > 7 (or 8), the number is too big, and we will
+	 * return a range error.
+	 *
+	 * Set any if any `digits' consumed; make it negative to indicate
+	 * overflow.
+	 */
+	qbase = (unsigned)base;
+	cutoff = neg ? -(u_quad_t)QUAD_MIN : QUAD_MAX;
+	cutlim = cutoff % qbase;
+	cutoff /= qbase;
+	for (acc = 0, any = 0;; c = *s++) {
+		if (!isascii(c))
+			break;
+		if (isdigit(c))
+			c -= '0';
+		else if (isalpha(c))
+			c -= isupper(c) ? 'A' - 10 : 'a' - 10;
+		else
+			break;
+		if (c >= base)
+			break;
+		if (any < 0 || acc > cutoff || acc == cutoff && c > cutlim)
+			any = -1;
+		else {
+			any = 1;
+			acc *= qbase;
+			acc += c;
+		}
+	}
+	if (any < 0) {
+		acc = neg ? QUAD_MIN : QUAD_MAX;
+		errno = ERANGE;
+	} else if (neg)
+		acc = -acc;
+	if (endptr != 0)
+		*endptr = (char *)(any ? s - 1 : nptr);
+	return (acc);
+}
diff --git a/lib/libc/stdlib/strtoq.c b/lib/libc/stdlib/strtoq.c
new file mode 100644
index 0000000..a5720df
--- /dev/null
+++ b/lib/libc/stdlib/strtoq.c
@@ -0,0 +1,138 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strtoq.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <limits.h>
+#include <errno.h>
+#include <ctype.h>
+#include <stdlib.h>
+
+/*
+ * Convert a string to a quad integer.
+ *
+ * Ignores `locale' stuff.  Assumes that the upper and lower case
+ * alphabets and digits are each contiguous.
+ */
+quad_t
+strtoq(nptr, endptr, base)
+	const char *nptr;
+	char **endptr;
+	register int base;
+{
+	register const char *s;
+	register u_quad_t acc;
+	register unsigned char c;
+	register u_quad_t qbase, cutoff;
+	register int neg, any, cutlim;
+
+	/*
+	 * Skip white space and pick up leading +/- sign if any.
+	 * If base is 0, allow 0x for hex and 0 for octal, else
+	 * assume decimal; if base is already 16, allow 0x.
+	 */
+	s = nptr;
+	do {
+		c = *s++;
+	} while (isspace(c));
+	if (c == '-') {
+		neg = 1;
+		c = *s++;
+	} else {
+		neg = 0;
+		if (c == '+')
+			c = *s++;
+	}
+	if ((base == 0 || base == 16) &&
+	    c == '0' && (*s == 'x' || *s == 'X')) {
+		c = s[1];
+		s += 2;
+		base = 16;
+	}
+	if (base == 0)
+		base = c == '0' ? 8 : 10;
+
+	/*
+	 * Compute the cutoff value between legal numbers and illegal
+	 * numbers.  That is the largest legal value, divided by the
+	 * base.  An input number that is greater than this value, if
+	 * followed by a legal input character, is too big.  One that
+	 * is equal to this value may be valid or not; the limit
+	 * between valid and invalid numbers is then based on the last
+	 * digit.  For instance, if the range for quads is
+	 * [-9223372036854775808..9223372036854775807] and the input base
+	 * is 10, cutoff will be set to 922337203685477580 and cutlim to
+	 * either 7 (neg==0) or 8 (neg==1), meaning that if we have
+	 * accumulated a value > 922337203685477580, or equal but the
+	 * next digit is > 7 (or 8), the number is too big, and we will
+	 * return a range error.
+	 *
+	 * Set any if any `digits' consumed; make it negative to indicate
+	 * overflow.
+	 */
+	qbase = (unsigned)base;
+	cutoff = neg ? -(u_quad_t)QUAD_MIN : QUAD_MAX;
+	cutlim = cutoff % qbase;
+	cutoff /= qbase;
+	for (acc = 0, any = 0;; c = *s++) {
+		if (!isascii(c))
+			break;
+		if (isdigit(c))
+			c -= '0';
+		else if (isalpha(c))
+			c -= isupper(c) ? 'A' - 10 : 'a' - 10;
+		else
+			break;
+		if (c >= base)
+			break;
+		if (any < 0 || acc > cutoff || acc == cutoff && c > cutlim)
+			any = -1;
+		else {
+			any = 1;
+			acc *= qbase;
+			acc += c;
+		}
+	}
+	if (any < 0) {
+		acc = neg ? QUAD_MIN : QUAD_MAX;
+		errno = ERANGE;
+	} else if (neg)
+		acc = -acc;
+	if (endptr != 0)
+		*endptr = (char *)(any ? s - 1 : nptr);
+	return (acc);
+}
diff --git a/lib/libc/stdlib/strtoul.3 b/lib/libc/stdlib/strtoul.3
new file mode 100644
index 0000000..5d6b050
--- /dev/null
+++ b/lib/libc/stdlib/strtoul.3
@@ -0,0 +1,163 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strtoul.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt STRTOUL 3
+.Os
+.Sh NAME
+.Nm strtoul, strtouq
+.Nd convert a string to an unsigned long or uquad_t integer
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Fd #include <limits.h>
+.Ft unsigned long
+.Fn strtoul "const char *nptr" "char **endptr" "int base"
+
+.Fd #include <sys/types.h>
+.Fd #include <stdlib.h>
+.Fd #include <limits.h>
+.Ft u_quad_t
+.Fn strtouq "const char *nptr" "char **endptr" "int base"
+.Sh DESCRIPTION
+The
+.Fn strtoul
+function
+converts the string in
+.Fa nptr
+to an
+.Em unsigned long
+value.
+The
+.Fn strtouq
+function
+converts the string in
+.Fa nptr
+to a
+.Em u_quad_t
+value.
+The conversion is done according to the given
+.Fa base ,
+which must be between 2 and 36 inclusive,
+or be the special value 0.
+.Pp
+The string may begin with an arbitrary amount of white space
+(as determined by
+.Xr isspace 3 )
+followed by a single optional
+.Ql +
+or
+.Ql -
+sign.
+If
+.Fa base
+is zero or 16,
+the string may then include a
+.Ql 0x
+prefix,
+and the number will be read in base 16; otherwise, a zero
+.Fa base
+is taken as 10 (decimal) unless the next character is
+.Ql 0 ,
+in which case it is taken as 8 (octal).
+.Pp
+The remainder of the string is converted to an
+.Em unsigned long
+value in the obvious manner,
+stopping at the end of the string
+or at the first character that does not produce a valid digit
+in the given base.
+(In bases above 10, the letter
+.Ql A
+in either upper or lower case
+represents 10,
+.Ql B
+represents 11, and so forth, with
+.Ql Z
+representing 35.)
+.Pp
+If
+.Fa endptr
+is non nil,
+.Fn strtoul
+stores the address of the first invalid character in
+.Fa *endptr .
+If there were no digits at all, however,
+.Fn strtoul
+stores the original value of
+.Fa nptr
+in
+.Fa *endptr .
+(Thus, if
+.Fa *nptr
+is not
+.Ql \e0
+but
+.Fa **endptr
+is
+.Ql \e0
+on return, the entire string was valid.)
+.Sh RETURN VALUES
+The
+.Fn strtoul
+function
+returns either the result of the conversion
+or, if there was a leading minus sign,
+the negation of the result of the conversion,
+unless the original (non-negated) value would overflow;
+in the latter case,
+.Fn strtoul
+returns
+.Dv ULONG_MAX
+and sets the global variable
+.Va errno
+to
+.Er ERANGE .
+.Sh ERRORS
+.Bl -tag -width [ERANGE]
+.It Bq Er ERANGE
+The given string was out of range; the value converted has been clamped.
+.El
+.Sh SEE ALSO
+.Xr strtol 3
+.Sh STANDARDS
+The
+.Fn strtoul
+function
+conforms to
+.St -ansiC .
+.Sh BUGS
+Ignores the current locale.
diff --git a/lib/libc/stdlib/strtoul.c b/lib/libc/stdlib/strtoul.c
new file mode 100644
index 0000000..0bf6b82
--- /dev/null
+++ b/lib/libc/stdlib/strtoul.c
@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strtoul.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <limits.h>
+#include <ctype.h>
+#include <errno.h>
+#include <stdlib.h>
+
+/*
+ * Convert a string to an unsigned long integer.
+ *
+ * Ignores `locale' stuff.  Assumes that the upper and lower case
+ * alphabets and digits are each contiguous.
+ */
+unsigned long
+strtoul(nptr, endptr, base)
+	const char *nptr;
+	char **endptr;
+	register int base;
+{
+	register const char *s = nptr;
+	register unsigned long acc;
+	register unsigned char c;
+	register unsigned long cutoff;
+	register int neg = 0, any, cutlim;
+
+	/*
+	 * See strtol for comments as to the logic used.
+	 */
+	do {
+		c = *s++;
+	} while (isspace(c));
+	if (c == '-') {
+		neg = 1;
+		c = *s++;
+	} else if (c == '+')
+		c = *s++;
+	if ((base == 0 || base == 16) &&
+	    c == '0' && (*s == 'x' || *s == 'X')) {
+		c = s[1];
+		s += 2;
+		base = 16;
+	}
+	if (base == 0)
+		base = c == '0' ? 8 : 10;
+	cutoff = (unsigned long)ULONG_MAX / (unsigned long)base;
+	cutlim = (unsigned long)ULONG_MAX % (unsigned long)base;
+	for (acc = 0, any = 0;; c = *s++) {
+		if (!isascii(c))
+			break;
+		if (isdigit(c))
+			c -= '0';
+		else if (isalpha(c))
+			c -= isupper(c) ? 'A' - 10 : 'a' - 10;
+		else
+			break;
+		if (c >= base)
+			break;
+		if (any < 0 || acc > cutoff || acc == cutoff && c > cutlim)
+			any = -1;
+		else {
+			any = 1;
+			acc *= base;
+			acc += c;
+		}
+	}
+	if (any < 0) {
+		acc = ULONG_MAX;
+		errno = ERANGE;
+	} else if (neg)
+		acc = -acc;
+	if (endptr != 0)
+		*endptr = (char *)(any ? s - 1 : nptr);
+	return (acc);
+}
diff --git a/lib/libc/stdlib/strtoull.c b/lib/libc/stdlib/strtoull.c
new file mode 100644
index 0000000..16dda0b
--- /dev/null
+++ b/lib/libc/stdlib/strtoull.c
@@ -0,0 +1,116 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strtouq.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <limits.h>
+#include <errno.h>
+#include <ctype.h>
+#include <stdlib.h>
+
+/*
+ * Convert a string to an unsigned quad integer.
+ *
+ * Ignores `locale' stuff.  Assumes that the upper and lower case
+ * alphabets and digits are each contiguous.
+ */
+u_quad_t
+strtouq(nptr, endptr, base)
+	const char *nptr;
+	char **endptr;
+	register int base;
+{
+	register const char *s = nptr;
+	register u_quad_t acc;
+	register unsigned char c;
+	register u_quad_t qbase, cutoff;
+	register int neg, any, cutlim;
+
+	/*
+	 * See strtoq for comments as to the logic used.
+	 */
+	s = nptr;
+	do {
+		c = *s++;
+	} while (isspace(c));
+	if (c == '-') {
+		neg = 1;
+		c = *s++;
+	} else {
+		neg = 0;
+		if (c == '+')
+			c = *s++;
+	}
+	if ((base == 0 || base == 16) &&
+	    c == '0' && (*s == 'x' || *s == 'X')) {
+		c = s[1];
+		s += 2;
+		base = 16;
+	}
+	if (base == 0)
+		base = c == '0' ? 8 : 10;
+	qbase = (unsigned)base;
+	cutoff = (u_quad_t)UQUAD_MAX / qbase;
+	cutlim = (u_quad_t)UQUAD_MAX % qbase;
+	for (acc = 0, any = 0;; c = *s++) {
+		if (!isascii(c))
+			break;
+		if (isdigit(c))
+			c -= '0';
+		else if (isalpha(c))
+			c -= isupper(c) ? 'A' - 10 : 'a' - 10;
+		else
+			break;
+		if (c >= base)
+			break;
+		if (any < 0 || acc > cutoff || acc == cutoff && c > cutlim)
+			any = -1;
+		else {
+			any = 1;
+			acc *= qbase;
+			acc += c;
+		}
+	}
+	if (any < 0) {
+		acc = UQUAD_MAX;
+		errno = ERANGE;
+	} else if (neg)
+		acc = -acc;
+	if (endptr != 0)
+		*endptr = (char *)(any ? s - 1 : nptr);
+	return (acc);
+}
diff --git a/lib/libc/stdlib/strtouq.c b/lib/libc/stdlib/strtouq.c
new file mode 100644
index 0000000..16dda0b
--- /dev/null
+++ b/lib/libc/stdlib/strtouq.c
@@ -0,0 +1,116 @@
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strtouq.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <limits.h>
+#include <errno.h>
+#include <ctype.h>
+#include <stdlib.h>
+
+/*
+ * Convert a string to an unsigned quad integer.
+ *
+ * Ignores `locale' stuff.  Assumes that the upper and lower case
+ * alphabets and digits are each contiguous.
+ */
+u_quad_t
+strtouq(nptr, endptr, base)
+	const char *nptr;
+	char **endptr;
+	register int base;
+{
+	register const char *s = nptr;
+	register u_quad_t acc;
+	register unsigned char c;
+	register u_quad_t qbase, cutoff;
+	register int neg, any, cutlim;
+
+	/*
+	 * See strtoq for comments as to the logic used.
+	 */
+	s = nptr;
+	do {
+		c = *s++;
+	} while (isspace(c));
+	if (c == '-') {
+		neg = 1;
+		c = *s++;
+	} else {
+		neg = 0;
+		if (c == '+')
+			c = *s++;
+	}
+	if ((base == 0 || base == 16) &&
+	    c == '0' && (*s == 'x' || *s == 'X')) {
+		c = s[1];
+		s += 2;
+		base = 16;
+	}
+	if (base == 0)
+		base = c == '0' ? 8 : 10;
+	qbase = (unsigned)base;
+	cutoff = (u_quad_t)UQUAD_MAX / qbase;
+	cutlim = (u_quad_t)UQUAD_MAX % qbase;
+	for (acc = 0, any = 0;; c = *s++) {
+		if (!isascii(c))
+			break;
+		if (isdigit(c))
+			c -= '0';
+		else if (isalpha(c))
+			c -= isupper(c) ? 'A' - 10 : 'a' - 10;
+		else
+			break;
+		if (c >= base)
+			break;
+		if (any < 0 || acc > cutoff || acc == cutoff && c > cutlim)
+			any = -1;
+		else {
+			any = 1;
+			acc *= qbase;
+			acc += c;
+		}
+	}
+	if (any < 0) {
+		acc = UQUAD_MAX;
+		errno = ERANGE;
+	} else if (neg)
+		acc = -acc;
+	if (endptr != 0)
+		*endptr = (char *)(any ? s - 1 : nptr);
+	return (acc);
+}
diff --git a/lib/libc/stdlib/system.3 b/lib/libc/stdlib/system.3
new file mode 100644
index 0000000..d89c79e
--- /dev/null
+++ b/lib/libc/stdlib/system.3
@@ -0,0 +1,93 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)system.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SYSTEM 3
+.Os
+.Sh NAME
+.Nm system
+.Nd pass a command to the shell
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft int
+.Fn system "const char *string"
+.Sh DESCRIPTION
+The
+.Fn system
+function
+hands the argument
+.Fa string
+to the command interpreter
+.Xr sh 1 .
+The calling process waits for the shell
+to finish executing the command,
+ignoring
+.Dv SIGINT
+and
+.Dv SIGQUIT ,
+and blocking
+.Dv SIGCHLD .
+.Pp
+If
+.Fa string
+is a
+.Dv NULL
+pointer,
+.Fn system
+will return non-zero if the command interpreter
+.Xr sh 1
+is available, and zero if it is not.
+.Pp
+The
+.Fn system
+function
+returns the exit status of the shell, or \-1 if the
+.Xr wait 3
+for the shell failed.
+A return value of 127 means the execution of the shell
+failed.
+.Sh SEE ALSO
+.Xr sh 1 ,
+.Xr execve 2 ,
+.Xr wait 2 ,
+.Xr popen 3
+.Sh STANDARDS
+The
+.Fn system
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/stdlib/system.c b/lib/libc/stdlib/system.c
new file mode 100644
index 0000000..c438f17
--- /dev/null
+++ b/lib/libc/stdlib/system.c
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)system.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <paths.h>
+
+system(command)
+	const char *command;
+{
+	union wait pstat;
+	pid_t pid;
+	int omask;
+	sig_t intsave, quitsave;
+
+	if (!command)		/* just checking... */
+		return(1);
+
+	omask = sigblock(sigmask(SIGCHLD));
+	switch(pid = vfork()) {
+	case -1:			/* error */
+		(void)sigsetmask(omask);
+		pstat.w_status = 0;
+		pstat.w_retcode = 127;
+		return(pstat.w_status);
+	case 0:				/* child */
+		(void)sigsetmask(omask);
+		execl(_PATH_BSHELL, "sh", "-c", command, (char *)NULL);
+		_exit(127);
+	}
+	intsave = signal(SIGINT, SIG_IGN);
+	quitsave = signal(SIGQUIT, SIG_IGN);
+	pid = waitpid(pid, (int *)&pstat, 0);
+	(void)sigsetmask(omask);
+	(void)signal(SIGINT, intsave);
+	(void)signal(SIGQUIT, quitsave);
+	return(pid == -1 ? -1 : pstat.w_status);
+}
diff --git a/lib/libc/stdtime/Makefile.inc b/lib/libc/stdtime/Makefile.inc
new file mode 100644
index 0000000..f72048b
--- /dev/null
+++ b/lib/libc/stdtime/Makefile.inc
@@ -0,0 +1,10 @@
+#	$Id: Makefile.inc,v 1.1 1994/09/13 03:50:55 wollman Exp $
+
+.PATH:	${.CURDIR}/stdtime
+
+SRCS+=	asctime.c localtime.c strftime.c difftime.c
+MAN5+=	stdtime/tzfile.5
+MAN3+=	stdtime/ctime.3 stdtime/strftime.3 stdtime/time2posix.3
+
+MLINKS+=ctime.3 asctime.3 ctime.3 difftime.3 ctime.3 gmtime.3 \
+	ctime.3 localtime.3 ctime.3 mktime.3
diff --git a/lib/libc/stdtime/asctime.c b/lib/libc/stdtime/asctime.c
new file mode 100644
index 0000000..6087702
--- /dev/null
+++ b/lib/libc/stdtime/asctime.c
@@ -0,0 +1,56 @@
+#ifndef lint
+#ifndef NOID
+static char	elsieid[] = "@(#)asctime.c	7.5";
+#endif /* !defined NOID */
+#endif /* !defined lint */
+
+/*LINTLIBRARY*/
+
+#include "private.h"
+#include "tzfile.h"
+
+/*
+** A la X3J11, with core dump avoidance.
+*/
+
+char *
+asctime(timeptr)
+register const struct tm *	timeptr;
+{
+	static const char	wday_name[][3] = {
+		"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+	};
+	static const char	mon_name[][3] = {
+		"Jan", "Feb", "Mar", "Apr", "May", "Jun",
+		"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+	};
+	/*
+	** Big enough for something such as
+	** ??? ???-2147483648 -2147483648:-2147483648:-2147483648 -2147483648\n
+	** (two three-character abbreviations, five strings denoting integers,
+	** three explicit spaces, two explicit colons, a newline,
+	** and a trailing ASCII nul).
+	*/
+	static char		result[3 * 2 + 5 * INT_STRLEN_MAXIMUM(int) +
+					3 + 2 + 1 + 1];
+	register const char *	wn;
+	register const char *	mn;
+
+	if (timeptr->tm_wday < 0 || timeptr->tm_wday >= DAYSPERWEEK)
+		wn = "???";
+	else	wn = wday_name[timeptr->tm_wday];
+	if (timeptr->tm_mon < 0 || timeptr->tm_mon >= MONSPERYEAR)
+		mn = "???";
+	else	mn = mon_name[timeptr->tm_mon];
+	/*
+	** The X3J11-suggested format is
+	**	"%.3s %.3s%3d %02.2d:%02.2d:%02.2d %d\n"
+	** Since the .2 in 02.2d is ignored, we drop it.
+	*/
+	(void) sprintf(result, "%.3s %.3s%3d %02d:%02d:%02d %d\n",
+		wn, mn,
+		timeptr->tm_mday, timeptr->tm_hour,
+		timeptr->tm_min, timeptr->tm_sec,
+		TM_YEAR_BASE + timeptr->tm_year);
+	return result;
+}
diff --git a/lib/libc/stdtime/ctime.3 b/lib/libc/stdtime/ctime.3
new file mode 100644
index 0000000..ff6a8ef
--- /dev/null
+++ b/lib/libc/stdtime/ctime.3
@@ -0,0 +1,258 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Arthur Olson.
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)ctime.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt CTIME 3
+.Os BSD 4.3
+.Sh NAME
+.Nm asctime ,
+.Nm ctime ,
+.Nm difftime ,
+.Nm gmtime ,
+.Nm localtime ,
+.Nm mktime
+.Nd transform binary date and time value to
+.Tn ASCII
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <time.h>
+.Vt extern char *tzname[2];
+.Ft char *
+.Fn ctime "const time_t *clock"
+.Ft double
+.Fn difftime "time_t time1" "time_t time0"
+.Ft char *
+.Fn asctime "const struct tm *tm"
+.Ft struct tm *
+.Fn localtime "const time_t *clock"
+.Ft struct tm *
+.Fn gmtime "const time_t *clock"
+.Ft time_t
+.Fn mktime "struct tm *tm"
+.Sh DESCRIPTION
+The functions
+.Fn ctime ,
+.Fn gmtime
+and
+.Fn localtime
+all take as an argument a time value representing the time in seconds since
+the Epoch (00:00:00
+.Tn UTC ,
+January 1, 1970; see
+.Xr time 3 ) .
+.Pp
+The function
+.Fn localtime
+converts the time value pointed at by
+.Fa clock ,
+and returns a pointer to a
+.Dq Fa struct tm
+(described below) which contains
+the broken-out time information for the value after adjusting for the current
+time zone (and any other factors such as Daylight Saving Time).
+Time zone adjustments are performed as specified by the
+.Ev TZ
+environmental variable (see
+.Xr tzset 3 ) .
+The function
+.Fn localtime
+uses
+.Xr tzset
+to initialize time conversion information if
+.Xr tzset
+has not already been called by the process.
+.Pp
+After filling in the tm structure,
+.Fn localtime
+sets the
+.Fa tm_isdst Ns 'th
+element of
+.Fa tzname
+to a pointer to an
+.Tn ASCII
+string that's the time zone abbreviation to be
+used with
+.Fn localtime Ns 's
+return value.
+.Pp
+The function
+.Fn gmtime
+similarly converts the time value, but without any time zone adjustment,
+and returns a pointer to a tm structure (described below).
+.Pp
+The
+.Fn ctime
+function
+adjusts the time value for the current time zone in the same manner as
+.Fn localtime ,
+and returns a pointer to a 26-character string of the form:
+.Bd -literal -offset indent
+Thu Nov 24 18:22:48 1986\en\e0
+.Ed
+.Pp
+All the fields have constant width.
+.Pp
+The
+.Fn asctime
+function
+converts the broken down time in the structure
+.Fa tm
+pointed at by
+.Fa *tm
+to the form
+shown in the example above.
+.Pp
+The function
+.Fn mktime
+converts the broken-down time, expressed as local time, in the structure
+pointed to by tm into a time value with the same encoding as that of the
+values returned by the
+.Xr time 3
+function, that is, seconds from the Epoch,
+.Tn UTC .
+.Pp
+The original values of the
+.Fa tm_wday
+and
+.Fa tm_yday
+components of the structure are ignored, and the original values of the
+other components are not restricted to their normal ranges.
+(A positive or zero value for
+.Fa tm_isdst
+causes
+.Fn mktime
+to presume initially that summer time (for example, Daylight Saving Time)
+is or is not in effect for the specified time, respectively.
+A negative value for
+.Fa tm_isdst
+causes the
+.Fn mktime
+function to attempt to divine whether summer time is in effect for the
+specified time.)
+.Pp
+On successful completion, the values of the
+.Fa tm_wday
+and
+.Fa tm_yday
+components of the structure are set appropriately, and the other components
+are set to represent the specified calendar time, but with their values
+forced to their normal ranges; the final value of
+.Fa tm_mday
+is not set until
+.Fa tm_mon
+and
+.Fa tm_year
+are determined.
+.Fn Mktime
+returns the specified calendar time; if the calendar time cannot be
+represented, it returns \-1;
+.Pp
+The
+.Fn difftime
+function
+returns the difference between two calendar times,
+.Pf ( Fa time1
+-
+.Fa time0 ) ,
+expressed in seconds.
+.Pp
+External declarations as well as the tm structure definition are in the 
+.Aq Pa time.h
+include file.
+The tm structure includes at least the following fields:
+.Bd -literal -offset indent
+int tm_sec;	/\(** seconds (0 - 60) \(**/
+int tm_min;	/\(** minutes (0 - 59) \(**/
+int tm_hour;	/\(** hours (0 - 23) \(**/
+int tm_mday;	/\(** day of month (1 - 31) \(**/
+int tm_mon;	/\(** month of year (0 - 11) \(**/
+int tm_year;	/\(** year \- 1900 \(**/
+int tm_wday;	/\(** day of week (Sunday = 0) \(**/
+int tm_yday;	/\(** day of year (0 - 365) \(**/
+int tm_isdst;	/\(** is summer time in effect? \(**/
+char \(**tm_zone;	/\(** abbreviation of timezone name \(**/
+long tm_gmtoff;	/\(** offset from UTC in seconds \(**/
+.Ed
+.Pp
+The
+field
+.Fa tm_isdst
+is non-zero if summer time is in effect.
+.Pp
+The field
+.Fa tm_gmtoff
+is the offset (in seconds) of the time represented from
+.Tn UTC ,
+with positive
+values indicating east of the Prime Meridian.
+.Sh SEE ALSO
+.Xr date 1 ,
+.Xr gettimeofday 2 ,
+.Xr getenv 3 ,
+.Xr time 3 ,
+.Xr tzset 3 ,
+.Xr tzfile 5
+.Sh HISTORY
+This manual page is derived from
+the time package contributed to Berkeley by
+Arthur Olsen and which appeared in
+.Bx 4.3 .
+.Sh BUGS
+Except for 
+.Fn difftime
+and
+.Fn mktime ,
+these functions leaves their result in an internal static object and return
+a pointer to that object. Subsequent calls to these
+function will modify the same object.
+.Pp
+The
+.Fa tm_zone
+field of a returned tm structure points to a static array of characters,
+which will also be overwritten by any subsequent calls (as well as by
+subsequent calls to
+.Xr tzset 3
+and
+.Xr tzsetwall 3 ) .
+.Pp
+Use of the external variable
+.Fa tzname
+is discouraged; the
+.Fa tm_zone
+entry in the tm structure is preferred.
+.Pp
+Avoid using out-of-range values with
+.Fn mktime
+when setting up lunch with promptness sticklers in Riyadh.
diff --git a/lib/libc/stdtime/difftime.c b/lib/libc/stdtime/difftime.c
new file mode 100644
index 0000000..68f9d7e
--- /dev/null
+++ b/lib/libc/stdtime/difftime.c
@@ -0,0 +1,74 @@
+#ifndef lint
+#ifndef NOID
+static char	elsieid[] = "@(#)difftime.c	7.4";
+#endif /* !defined NOID */
+#endif /* !defined lint */
+
+/*LINTLIBRARY*/
+
+#include "private.h"
+
+/*
+** Algorithm courtesy Paul Eggert (eggert@twinsun.com).
+*/
+
+#ifdef HAVE_LONG_DOUBLE
+#define long_double	long double
+#endif /* defined HAVE_LONG_DOUBLE */
+#ifndef HAVE_LONG_DOUBLE
+#define long_double	double
+#endif /* !defined HAVE_LONG_DOUBLE */
+
+double
+difftime(time1, time0)
+const time_t	time1;
+const time_t	time0;
+{
+	time_t	delta;
+	time_t	hibit;
+
+	if (sizeof(time_t) < sizeof(double))
+		return (double) time1 - (double) time0;
+	if (sizeof(time_t) < sizeof(long_double))
+		return (long_double) time1 - (long_double) time0;
+	if (time1 < time0)
+		return -difftime(time0, time1);
+	/*
+	** As much as possible, avoid loss of precision
+	** by computing the difference before converting to double.
+	*/
+	delta = time1 - time0;
+	if (delta >= 0)
+		return delta;
+	/*
+	** Repair delta overflow.
+	*/
+	hibit = 1;
+	while ((hibit <<= 1) > 0)
+		continue;
+	/*
+	** The following expression rounds twice, which means
+	** the result may not be the closest to the true answer.
+	** For example, suppose time_t is 64-bit signed int,
+	** long_double is IEEE 754 double with default rounding,
+	** time1 = 9223372036854775807 and time0 = -1536.
+	** Then the true difference is 9223372036854777343,
+	** which rounds to 9223372036854777856
+	** with a total error of 513.
+	** But delta overflows to -9223372036854774273,
+	** which rounds to -9223372036854774784, and correcting
+	** this by subtracting 2 * (long_double) hibit
+	** (i.e. by adding 2**64 = 18446744073709551616)
+	** yields 9223372036854776832, which
+	** rounds to 9223372036854775808
+	** with a total error of 1535 instead.
+	** This problem occurs only with very large differences.
+	** It's too painful to fix this portably.
+	** We are not alone in this problem;
+	** many C compilers round twice when converting
+	** large unsigned types to small floating types,
+	** so if time_t is unsigned the "return delta" above
+	** has the same double-rounding problem.
+	*/
+	return delta - 2 * (long_double) hibit;
+}
diff --git a/lib/libc/stdtime/localtime.c b/lib/libc/stdtime/localtime.c
new file mode 100644
index 0000000..d6337ff
--- /dev/null
+++ b/lib/libc/stdtime/localtime.c
@@ -0,0 +1,1612 @@
+#ifndef lint
+#ifndef NOID
+static char	elsieid[] = "@(#)localtime.c	7.44";
+#endif /* !defined NOID */
+#endif /* !defined lint */
+
+/*
+** Leap second handling from Bradley White (bww@k.gp.cs.cmu.edu).
+** POSIX-style TZ environment variable handling from Guy Harris
+** (guy@auspex.com).
+*/
+
+/*LINTLIBRARY*/
+
+#include "private.h"
+#include "tzfile.h"
+#include "fcntl.h"
+
+/*
+** SunOS 4.1.1 headers lack O_BINARY.
+*/
+
+#ifdef O_BINARY
+#define OPEN_MODE	(O_RDONLY | O_BINARY)
+#endif /* defined O_BINARY */
+#ifndef O_BINARY
+#define OPEN_MODE	O_RDONLY
+#endif /* !defined O_BINARY */
+
+#ifndef WILDABBR
+/*
+** Someone might make incorrect use of a time zone abbreviation:
+**	1.	They might reference tzname[0] before calling tzset (explicitly
+**		or implicitly).
+**	2.	They might reference tzname[1] before calling tzset (explicitly
+**		or implicitly).
+**	3.	They might reference tzname[1] after setting to a time zone
+**		in which Daylight Saving Time is never observed.
+**	4.	They might reference tzname[0] after setting to a time zone
+**		in which Standard Time is never observed.
+**	5.	They might reference tm.TM_ZONE after calling offtime.
+** What's best to do in the above cases is open to debate;
+** for now, we just set things up so that in any of the five cases
+** WILDABBR is used.  Another possibility:  initialize tzname[0] to the
+** string "tzname[0] used before set", and similarly for the other cases.
+** And another:  initialize tzname[0] to "ERA", with an explanation in the
+** manual page of what this "time zone abbreviation" means (doing this so
+** that tzname[0] has the "normal" length of three characters).
+*/
+#define WILDABBR	"   "
+#endif /* !defined WILDABBR */
+
+static char		wildabbr[] = "WILDABBR";
+
+static const char	gmt[] = "GMT";
+
+struct ttinfo {				/* time type information */
+	long		tt_gmtoff;	/* GMT offset in seconds */
+	int		tt_isdst;	/* used to set tm_isdst */
+	int		tt_abbrind;	/* abbreviation list index */
+	int		tt_ttisstd;	/* TRUE if transition is std time */
+	int		tt_ttisgmt;	/* TRUE if transition is GMT */
+};
+
+struct lsinfo {				/* leap second information */
+	time_t		ls_trans;	/* transition time */
+	long		ls_corr;	/* correction to apply */
+};
+
+#define BIGGEST(a, b)	(((a) > (b)) ? (a) : (b))
+
+#ifdef TZNAME_MAX
+#define MY_TZNAME_MAX	TZNAME_MAX
+#endif /* defined TZNAME_MAX */
+#ifndef TZNAME_MAX
+#define MY_TZNAME_MAX	255
+#endif /* !defined TZNAME_MAX */
+
+struct state {
+	int		leapcnt;
+	int		timecnt;
+	int		typecnt;
+	int		charcnt;
+	time_t		ats[TZ_MAX_TIMES];
+	unsigned char	types[TZ_MAX_TIMES];
+	struct ttinfo	ttis[TZ_MAX_TYPES];
+	char		chars[BIGGEST(BIGGEST(TZ_MAX_CHARS + 1, sizeof gmt),
+				(2 * (MY_TZNAME_MAX + 1)))];
+	struct lsinfo	lsis[TZ_MAX_LEAPS];
+};
+
+struct rule {
+	int		r_type;		/* type of rule--see below */
+	int		r_day;		/* day number of rule */
+	int		r_week;		/* week number of rule */
+	int		r_mon;		/* month number of rule */
+	long		r_time;		/* transition time of rule */
+};
+
+#define JULIAN_DAY		0	/* Jn - Julian day */
+#define DAY_OF_YEAR		1	/* n - day of year */
+#define MONTH_NTH_DAY_OF_WEEK	2	/* Mm.n.d - month, week, day of week */
+
+/*
+** Prototypes for static functions.
+*/
+
+static long		detzcode P((const char * codep));
+static const char *	getzname P((const char * strp));
+static const char *	getnum P((const char * strp, int * nump, int min,
+				int max));
+static const char *	getsecs P((const char * strp, long * secsp));
+static const char *	getoffset P((const char * strp, long * offsetp));
+static const char *	getrule P((const char * strp, struct rule * rulep));
+static void		gmtload P((struct state * sp));
+static void		gmtsub P((const time_t * timep, long offset,
+				struct tm * tmp));
+static void		localsub P((const time_t * timep, long offset,
+				struct tm * tmp));
+static int		increment_overflow P((int * number, int delta));
+static int		normalize_overflow P((int * tensptr, int * unitsptr,
+				int base));
+static void		settzname P((void));
+static time_t		time1 P((struct tm * tmp,
+				void(*funcp) P((const time_t *,
+				long, struct tm *)),
+				long offset));
+static time_t		time2 P((struct tm *tmp,
+				void(*funcp) P((const time_t *,
+				long, struct tm*)),
+				long offset, int * okayp));
+static void		timesub P((const time_t * timep, long offset,
+				const struct state * sp, struct tm * tmp));
+static int		tmcomp P((const struct tm * atmp,
+				const struct tm * btmp));
+static time_t		transtime P((time_t janfirst, int year,
+				const struct rule * rulep, long offset));
+static int		tzload P((const char * name, struct state * sp));
+static int		tzparse P((const char * name, struct state * sp,
+				int lastditch));
+
+#ifdef ALL_STATE
+static struct state *	lclptr;
+static struct state *	gmtptr;
+#endif /* defined ALL_STATE */
+
+#ifndef ALL_STATE
+static struct state	lclmem;
+static struct state	gmtmem;
+#define lclptr		(&lclmem)
+#define gmtptr		(&gmtmem)
+#endif /* State Farm */
+
+#ifndef TZ_STRLEN_MAX
+#define TZ_STRLEN_MAX 255
+#endif /* !defined TZ_STRLEN_MAX */
+
+static char		lcl_TZname[TZ_STRLEN_MAX + 1];
+static int		lcl_is_set;
+static int		gmt_is_set;
+
+char *			tzname[2] = {
+	wildabbr,
+	wildabbr
+};
+
+/*
+** Section 4.12.3 of X3.159-1989 requires that
+**	Except for the strftime function, these functions [asctime,
+**	ctime, gmtime, localtime] return values in one of two static
+**	objects: a broken-down time structure and an array of char.
+** Thanks to Paul Eggert (eggert@twinsun.com) for noting this.
+*/
+
+static struct tm	tm;
+
+#ifdef USG_COMPAT
+time_t			timezone = 0;
+int			daylight = 0;
+#endif /* defined USG_COMPAT */
+
+#ifdef ALTZONE
+time_t			altzone = 0;
+#endif /* defined ALTZONE */
+
+static long
+detzcode(codep)
+const char * const	codep;
+{
+	register long	result;
+	register int	i;
+
+ 	result = (codep[0] & 0x80) ? ~0L : 0L;
+	for (i = 0; i < 4; ++i)
+		result = (result << 8) | (codep[i] & 0xff);
+	return result;
+}
+
+static void
+settzname P((void))
+{
+	register struct state * const		sp = lclptr;
+	register int				i;
+
+	tzname[0] = wildabbr;
+	tzname[1] = wildabbr;
+#ifdef USG_COMPAT
+	daylight = 0;
+	timezone = 0;
+#endif /* defined USG_COMPAT */
+#ifdef ALTZONE
+	altzone = 0;
+#endif /* defined ALTZONE */
+#ifdef ALL_STATE
+	if (sp == NULL) {
+		tzname[0] = tzname[1] = gmt;
+		return;
+	}
+#endif /* defined ALL_STATE */
+	for (i = 0; i < sp->typecnt; ++i) {
+		register const struct ttinfo * const	ttisp = &sp->ttis[i];
+
+		tzname[ttisp->tt_isdst] =
+			&sp->chars[ttisp->tt_abbrind];
+#ifdef USG_COMPAT
+		if (ttisp->tt_isdst)
+			daylight = 1;
+		if (i == 0 || !ttisp->tt_isdst)
+			timezone = -(ttisp->tt_gmtoff);
+#endif /* defined USG_COMPAT */
+#ifdef ALTZONE
+		if (i == 0 || ttisp->tt_isdst)
+			altzone = -(ttisp->tt_gmtoff);
+#endif /* defined ALTZONE */
+	}
+	/*
+	** And to get the latest zone names into tzname. . .
+	*/
+	for (i = 0; i < sp->timecnt; ++i) {
+		register const struct ttinfo * const	ttisp =
+							&sp->ttis[
+								sp->types[i]];
+
+		tzname[ttisp->tt_isdst] =
+			&sp->chars[ttisp->tt_abbrind];
+	}
+}
+
+static int
+tzload(name, sp)
+register const char *		name;
+register struct state * const	sp;
+{
+	register const char *	p;
+	register int		i;
+	register int		fid;
+
+	if (name == NULL && (name = TZDEFAULT) == NULL)
+		return -1;
+	{
+		register int	doaccess;
+		/*
+		** Section 4.9.1 of the C standard says that
+		** "FILENAME_MAX expands to an integral constant expression
+		** that is the sie needed for an array of char large enough
+		** to hold the longest file name string that the implementation
+		** guarantees can be opened."
+		*/
+		char		fullname[FILENAME_MAX + 1];
+
+		if (name[0] == ':')
+			++name;
+		doaccess = name[0] == '/';
+		if (!doaccess) {
+			if ((p = TZDIR) == NULL)
+				return -1;
+			if ((strlen(p) + strlen(name) + 1) >= sizeof fullname)
+				return -1;
+			(void) strcpy(fullname, p);
+			(void) strcat(fullname, "/");
+			(void) strcat(fullname, name);
+			/*
+			** Set doaccess if '.' (as in "../") shows up in name.
+			*/
+			if (strchr(name, '.') != NULL)
+				doaccess = TRUE;
+			name = fullname;
+		}
+		if (doaccess && access(name, R_OK) != 0)
+			return -1;
+		if ((fid = open(name, OPEN_MODE)) == -1)
+			return -1;
+	}
+	{
+		struct tzhead *	tzhp;
+		char		buf[sizeof *sp + sizeof *tzhp];
+		int		ttisstdcnt;
+		int		ttisgmtcnt;
+
+		i = read(fid, buf, sizeof buf);
+		if (close(fid) != 0)
+			return -1;
+		p = buf;
+		p += sizeof tzhp->tzh_reserved;
+		ttisstdcnt = (int) detzcode(p);
+		p += 4;
+		ttisgmtcnt = (int) detzcode(p);
+		p += 4;
+		sp->leapcnt = (int) detzcode(p);
+		p += 4;
+		sp->timecnt = (int) detzcode(p);
+		p += 4;
+		sp->typecnt = (int) detzcode(p);
+		p += 4;
+		sp->charcnt = (int) detzcode(p);
+		p += 4;
+		if (sp->leapcnt < 0 || sp->leapcnt > TZ_MAX_LEAPS ||
+			sp->typecnt <= 0 || sp->typecnt > TZ_MAX_TYPES ||
+			sp->timecnt < 0 || sp->timecnt > TZ_MAX_TIMES ||
+			sp->charcnt < 0 || sp->charcnt > TZ_MAX_CHARS ||
+			(ttisstdcnt != sp->typecnt && ttisstdcnt != 0) ||
+			(ttisgmtcnt != sp->typecnt && ttisgmtcnt != 0))
+				return -1;
+		if (i - (p - buf) < sp->timecnt * 4 +	/* ats */
+			sp->timecnt +			/* types */
+			sp->typecnt * (4 + 2) +		/* ttinfos */
+			sp->charcnt +			/* chars */
+			sp->leapcnt * (4 + 4) +		/* lsinfos */
+			ttisstdcnt +			/* ttisstds */
+			ttisgmtcnt)			/* ttisgmts */
+				return -1;
+		for (i = 0; i < sp->timecnt; ++i) {
+			sp->ats[i] = detzcode(p);
+			p += 4;
+		}
+		for (i = 0; i < sp->timecnt; ++i) {
+			sp->types[i] = (unsigned char) *p++;
+			if (sp->types[i] >= sp->typecnt)
+				return -1;
+		}
+		for (i = 0; i < sp->typecnt; ++i) {
+			register struct ttinfo *	ttisp;
+
+			ttisp = &sp->ttis[i];
+			ttisp->tt_gmtoff = detzcode(p);
+			p += 4;
+			ttisp->tt_isdst = (unsigned char) *p++;
+			if (ttisp->tt_isdst != 0 && ttisp->tt_isdst != 1)
+				return -1;
+			ttisp->tt_abbrind = (unsigned char) *p++;
+			if (ttisp->tt_abbrind < 0 ||
+				ttisp->tt_abbrind > sp->charcnt)
+					return -1;
+		}
+		for (i = 0; i < sp->charcnt; ++i)
+			sp->chars[i] = *p++;
+		sp->chars[i] = '\0';	/* ensure '\0' at end */
+		for (i = 0; i < sp->leapcnt; ++i) {
+			register struct lsinfo *	lsisp;
+
+			lsisp = &sp->lsis[i];
+			lsisp->ls_trans = detzcode(p);
+			p += 4;
+			lsisp->ls_corr = detzcode(p);
+			p += 4;
+		}
+		for (i = 0; i < sp->typecnt; ++i) {
+			register struct ttinfo *	ttisp;
+
+			ttisp = &sp->ttis[i];
+			if (ttisstdcnt == 0)
+				ttisp->tt_ttisstd = FALSE;
+			else {
+				ttisp->tt_ttisstd = *p++;
+				if (ttisp->tt_ttisstd != TRUE &&
+					ttisp->tt_ttisstd != FALSE)
+						return -1;
+			}
+		}
+		for (i = 0; i < sp->typecnt; ++i) {
+			register struct ttinfo *	ttisp;
+
+			ttisp = &sp->ttis[i];
+			if (ttisgmtcnt == 0)
+				ttisp->tt_ttisgmt = FALSE;
+			else {
+				ttisp->tt_ttisgmt = *p++;
+				if (ttisp->tt_ttisgmt != TRUE &&
+					ttisp->tt_ttisgmt != FALSE)
+						return -1;
+			}
+		}
+	}
+	return 0;
+}
+
+static const int	mon_lengths[2][MONSPERYEAR] = {
+	{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
+	{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
+};
+
+static const int	year_lengths[2] = {
+	DAYSPERNYEAR, DAYSPERLYEAR
+};
+
+/*
+** Given a pointer into a time zone string, scan until a character that is not
+** a valid character in a zone name is found.  Return a pointer to that
+** character.
+*/
+
+static const char *
+getzname(strp)
+register const char *	strp;
+{
+	register char	c;
+
+	while ((c = *strp) != '\0' && !isdigit(c) && c != ',' && c != '-' &&
+		c != '+')
+			++strp;
+	return strp;
+}
+
+/*
+** Given a pointer into a time zone string, extract a number from that string.
+** Check that the number is within a specified range; if it is not, return
+** NULL.
+** Otherwise, return a pointer to the first character not part of the number.
+*/
+
+static const char *
+getnum(strp, nump, min, max)
+register const char *	strp;
+int * const		nump;
+const int		min;
+const int		max;
+{
+	register char	c;
+	register int	num;
+
+	if (strp == NULL || !isdigit(*strp))
+		return NULL;
+	num = 0;
+	while ((c = *strp) != '\0' && isdigit(c)) {
+		num = num * 10 + (c - '0');
+		if (num > max)
+			return NULL;	/* illegal value */
+		++strp;
+	}
+	if (num < min)
+		return NULL;		/* illegal value */
+	*nump = num;
+	return strp;
+}
+
+/*
+** Given a pointer into a time zone string, extract a number of seconds,
+** in hh[:mm[:ss]] form, from the string.
+** If any error occurs, return NULL.
+** Otherwise, return a pointer to the first character not part of the number
+** of seconds.
+*/
+
+static const char *
+getsecs(strp, secsp)
+register const char *	strp;
+long * const		secsp;
+{
+	int	num;
+
+	/*
+	** `HOURSPERDAY * DAYSPERWEEK - 1' allows quasi-Posix rules like
+	** "M10.4.6/26", which does not conform to Posix,
+	** but which specifies the equivalent of
+	** ``02:00 on the first Sunday on or after 23 Oct''.
+	*/
+	strp = getnum(strp, &num, 0, HOURSPERDAY * DAYSPERWEEK - 1);
+	if (strp == NULL)
+		return NULL;
+	*secsp = num * (long) SECSPERHOUR;
+	if (*strp == ':') {
+		++strp;
+		strp = getnum(strp, &num, 0, MINSPERHOUR - 1);
+		if (strp == NULL)
+			return NULL;
+		*secsp += num * SECSPERMIN;
+		if (*strp == ':') {
+			++strp;
+			/* `SECSPERMIN' allows for leap seconds.  */
+			strp = getnum(strp, &num, 0, SECSPERMIN);
+			if (strp == NULL)
+				return NULL;
+			*secsp += num;
+		}
+	}
+	return strp;
+}
+
+/*
+** Given a pointer into a time zone string, extract an offset, in
+** [+-]hh[:mm[:ss]] form, from the string.
+** If any error occurs, return NULL.
+** Otherwise, return a pointer to the first character not part of the time.
+*/
+
+static const char *
+getoffset(strp, offsetp)
+register const char *	strp;
+long * const		offsetp;
+{
+	register int	neg;
+
+	if (*strp == '-') {
+		neg = 1;
+		++strp;
+	} else if (isdigit(*strp) || *strp++ == '+')
+		neg = 0;
+	else	return NULL;		/* illegal offset */
+	strp = getsecs(strp, offsetp);
+	if (strp == NULL)
+		return NULL;		/* illegal time */
+	if (neg)
+		*offsetp = -*offsetp;
+	return strp;
+}
+
+/*
+** Given a pointer into a time zone string, extract a rule in the form
+** date[/time].  See POSIX section 8 for the format of "date" and "time".
+** If a valid rule is not found, return NULL.
+** Otherwise, return a pointer to the first character not part of the rule.
+*/
+
+static const char *
+getrule(strp, rulep)
+const char *			strp;
+register struct rule * const	rulep;
+{
+	if (*strp == 'J') {
+		/*
+		** Julian day.
+		*/
+		rulep->r_type = JULIAN_DAY;
+		++strp;
+		strp = getnum(strp, &rulep->r_day, 1, DAYSPERNYEAR);
+	} else if (*strp == 'M') {
+		/*
+		** Month, week, day.
+		*/
+		rulep->r_type = MONTH_NTH_DAY_OF_WEEK;
+		++strp;
+		strp = getnum(strp, &rulep->r_mon, 1, MONSPERYEAR);
+		if (strp == NULL)
+			return NULL;
+		if (*strp++ != '.')
+			return NULL;
+		strp = getnum(strp, &rulep->r_week, 1, 5);
+		if (strp == NULL)
+			return NULL;
+		if (*strp++ != '.')
+			return NULL;
+		strp = getnum(strp, &rulep->r_day, 0, DAYSPERWEEK - 1);
+	} else if (isdigit(*strp)) {
+		/*
+		** Day of year.
+		*/
+		rulep->r_type = DAY_OF_YEAR;
+		strp = getnum(strp, &rulep->r_day, 0, DAYSPERLYEAR - 1);
+	} else	return NULL;		/* invalid format */
+	if (strp == NULL)
+		return NULL;
+	if (*strp == '/') {
+		/*
+		** Time specified.
+		*/
+		++strp;
+		strp = getsecs(strp, &rulep->r_time);
+	} else	rulep->r_time = 2 * SECSPERHOUR;	/* default = 2:00:00 */
+	return strp;
+}
+
+/*
+** Given the Epoch-relative time of January 1, 00:00:00 GMT, in a year, the
+** year, a rule, and the offset from GMT at the time that rule takes effect,
+** calculate the Epoch-relative time that rule takes effect.
+*/
+
+static time_t
+transtime(janfirst, year, rulep, offset)
+const time_t				janfirst;
+const int				year;
+register const struct rule * const	rulep;
+const long				offset;
+{
+	register int	leapyear;
+	register time_t	value;
+	register int	i;
+	int		d, m1, yy0, yy1, yy2, dow;
+
+	INITIALIZE(value);
+	leapyear = isleap(year);
+	switch (rulep->r_type) {
+
+	case JULIAN_DAY:
+		/*
+		** Jn - Julian day, 1 == January 1, 60 == March 1 even in leap
+		** years.
+		** In non-leap years, or if the day number is 59 or less, just
+		** add SECSPERDAY times the day number-1 to the time of
+		** January 1, midnight, to get the day.
+		*/
+		value = janfirst + (rulep->r_day - 1) * SECSPERDAY;
+		if (leapyear && rulep->r_day >= 60)
+			value += SECSPERDAY;
+		break;
+
+	case DAY_OF_YEAR:
+		/*
+		** n - day of year.
+		** Just add SECSPERDAY times the day number to the time of
+		** January 1, midnight, to get the day.
+		*/
+		value = janfirst + rulep->r_day * SECSPERDAY;
+		break;
+
+	case MONTH_NTH_DAY_OF_WEEK:
+		/*
+		** Mm.n.d - nth "dth day" of month m.
+		*/
+		value = janfirst;
+		for (i = 0; i < rulep->r_mon - 1; ++i)
+			value += mon_lengths[leapyear][i] * SECSPERDAY;
+
+		/*
+		** Use Zeller's Congruence to get day-of-week of first day of
+		** month.
+		*/
+		m1 = (rulep->r_mon + 9) % 12 + 1;
+		yy0 = (rulep->r_mon <= 2) ? (year - 1) : year;
+		yy1 = yy0 / 100;
+		yy2 = yy0 % 100;
+		dow = ((26 * m1 - 2) / 10 +
+			1 + yy2 + yy2 / 4 + yy1 / 4 - 2 * yy1) % 7;
+		if (dow < 0)
+			dow += DAYSPERWEEK;
+
+		/*
+		** "dow" is the day-of-week of the first day of the month.  Get
+		** the day-of-month (zero-origin) of the first "dow" day of the
+		** month.
+		*/
+		d = rulep->r_day - dow;
+		if (d < 0)
+			d += DAYSPERWEEK;
+		for (i = 1; i < rulep->r_week; ++i) {
+			if (d + DAYSPERWEEK >=
+				mon_lengths[leapyear][rulep->r_mon - 1])
+					break;
+			d += DAYSPERWEEK;
+		}
+
+		/*
+		** "d" is the day-of-month (zero-origin) of the day we want.
+		*/
+		value += d * SECSPERDAY;
+		break;
+	}
+
+	/*
+	** "value" is the Epoch-relative time of 00:00:00 GMT on the day in
+	** question.  To get the Epoch-relative time of the specified local
+	** time on that day, add the transition time and the current offset
+	** from GMT.
+	*/
+	return value + rulep->r_time + offset;
+}
+
+/*
+** Given a POSIX section 8-style TZ string, fill in the rule tables as
+** appropriate.
+*/
+
+static int
+tzparse(name, sp, lastditch)
+const char *			name;
+register struct state * const	sp;
+const int			lastditch;
+{
+	const char *			stdname;
+	const char *			dstname;
+	size_t				stdlen;
+	size_t				dstlen;
+	long				stdoffset;
+	long				dstoffset;
+	register time_t *		atp;
+	register unsigned char *	typep;
+	register char *			cp;
+	register int			load_result;
+
+	INITIALIZE(dstname);
+	stdname = name;
+	if (lastditch) {
+		stdlen = strlen(name);	/* length of standard zone name */
+		name += stdlen;
+		if (stdlen >= sizeof sp->chars)
+			stdlen = (sizeof sp->chars) - 1;
+	} else {
+		name = getzname(name);
+		stdlen = name - stdname;
+		if (stdlen < 3)
+			return -1;
+	}
+	if (*name == '\0')
+		return -1;	/* was "stdoffset = 0;" */
+	else {
+		name = getoffset(name, &stdoffset);
+		if (name == NULL)
+			return -1;
+	}
+	load_result = tzload(TZDEFRULES, sp);
+	if (load_result != 0)
+		sp->leapcnt = 0;		/* so, we're off a little */
+	if (*name != '\0') {
+		dstname = name;
+		name = getzname(name);
+		dstlen = name - dstname;	/* length of DST zone name */
+		if (dstlen < 3)
+			return -1;
+		if (*name != '\0' && *name != ',' && *name != ';') {
+			name = getoffset(name, &dstoffset);
+			if (name == NULL)
+				return -1;
+		} else	dstoffset = stdoffset - SECSPERHOUR;
+		if (*name == ',' || *name == ';') {
+			struct rule	start;
+			struct rule	end;
+			register int	year;
+			register time_t	janfirst;
+			time_t		starttime;
+			time_t		endtime;
+
+			++name;
+			if ((name = getrule(name, &start)) == NULL)
+				return -1;
+			if (*name++ != ',')
+				return -1;
+			if ((name = getrule(name, &end)) == NULL)
+				return -1;
+			if (*name != '\0')
+				return -1;
+			sp->typecnt = 2;	/* standard time and DST */
+			/*
+			** Two transitions per year, from EPOCH_YEAR to 2037.
+			*/
+			sp->timecnt = 2 * (2037 - EPOCH_YEAR + 1);
+			if (sp->timecnt > TZ_MAX_TIMES)
+				return -1;
+			sp->ttis[0].tt_gmtoff = -dstoffset;
+			sp->ttis[0].tt_isdst = 1;
+			sp->ttis[0].tt_abbrind = stdlen + 1;
+			sp->ttis[1].tt_gmtoff = -stdoffset;
+			sp->ttis[1].tt_isdst = 0;
+			sp->ttis[1].tt_abbrind = 0;
+			atp = sp->ats;
+			typep = sp->types;
+			janfirst = 0;
+			for (year = EPOCH_YEAR; year <= 2037; ++year) {
+				starttime = transtime(janfirst, year, &start,
+					stdoffset);
+				endtime = transtime(janfirst, year, &end,
+					dstoffset);
+				if (starttime > endtime) {
+					*atp++ = endtime;
+					*typep++ = 1;	/* DST ends */
+					*atp++ = starttime;
+					*typep++ = 0;	/* DST begins */
+				} else {
+					*atp++ = starttime;
+					*typep++ = 0;	/* DST begins */
+					*atp++ = endtime;
+					*typep++ = 1;	/* DST ends */
+				}
+				janfirst += year_lengths[isleap(year)] *
+					SECSPERDAY;
+			}
+		} else {
+			register long	theirstdoffset;
+			register long	theirdstoffset;
+			register long	theiroffset;
+			register int	isdst;
+			register int	i;
+			register int	j;
+
+			if (*name != '\0')
+				return -1;
+			if (load_result != 0)
+				return -1;
+			/*
+			** Initial values of theirstdoffset and theirdstoffset.
+			*/
+			theirstdoffset = 0;
+			for (i = 0; i < sp->timecnt; ++i) {
+				j = sp->types[i];
+				if (!sp->ttis[j].tt_isdst) {
+					theirstdoffset = -sp->ttis[j].tt_gmtoff;
+					break;
+				}
+			}
+			theirdstoffset = 0;
+			for (i = 0; i < sp->timecnt; ++i) {
+				j = sp->types[i];
+				if (sp->ttis[j].tt_isdst) {
+					theirdstoffset = -sp->ttis[j].tt_gmtoff;
+					break;
+				}
+			}
+			/*
+			** Initially we're assumed to be in standard time.
+			*/
+			isdst = FALSE;
+			theiroffset = theirstdoffset;
+			/*
+			** Now juggle transition times and types
+			** tracking offsets as you do.
+			*/
+			for (i = 0; i < sp->timecnt; ++i) {
+				j = sp->types[i];
+				sp->types[i] = sp->ttis[j].tt_isdst;
+				if (sp->ttis[j].tt_ttisgmt) {
+					/* No adjustment to transition time */
+				} else {
+					/*
+					** If summer time is in effect, and the
+					** transition time was not specified as
+					** standard time, add the summer time
+					** offset to the transition time;
+					** otherwise, add the standard time
+					** offset to the transition time.
+					*/
+					/*
+					** Transitions from DST to DDST
+					** will effectively disappear since
+					** POSIX provides for only one DST
+					** offset.
+					*/
+					if (isdst && !sp->ttis[j].tt_ttisstd) {
+						sp->ats[i] += dstoffset -
+							theirdstoffset;
+					} else {
+						sp->ats[i] += stdoffset -
+							theirstdoffset;
+					}
+				}
+				theiroffset = -sp->ttis[j].tt_gmtoff;
+				if (sp->ttis[j].tt_isdst)
+					theirdstoffset = theiroffset;
+				else	theirstdoffset = theiroffset;
+			}
+			/*
+			** Finally, fill in ttis.
+			** ttisstd and ttisgmt need not be handled.
+			*/
+			sp->ttis[0].tt_gmtoff = -stdoffset;
+			sp->ttis[0].tt_isdst = FALSE;
+			sp->ttis[0].tt_abbrind = 0;
+			sp->ttis[1].tt_gmtoff = -dstoffset;
+			sp->ttis[1].tt_isdst = TRUE;
+			sp->ttis[1].tt_abbrind = stdlen + 1;
+		}
+	} else {
+		dstlen = 0;
+		sp->typecnt = 1;		/* only standard time */
+		sp->timecnt = 0;
+		sp->ttis[0].tt_gmtoff = -stdoffset;
+		sp->ttis[0].tt_isdst = 0;
+		sp->ttis[0].tt_abbrind = 0;
+	}
+	sp->charcnt = stdlen + 1;
+	if (dstlen != 0)
+		sp->charcnt += dstlen + 1;
+	if (sp->charcnt > sizeof sp->chars)
+		return -1;
+	cp = sp->chars;
+	(void) strncpy(cp, stdname, stdlen);
+	cp += stdlen;
+	*cp++ = '\0';
+	if (dstlen != 0) {
+		(void) strncpy(cp, dstname, dstlen);
+		*(cp + dstlen) = '\0';
+	}
+	return 0;
+}
+
+static void
+gmtload(sp)
+struct state * const	sp;
+{
+	if (tzload(gmt, sp) != 0)
+		(void) tzparse(gmt, sp, TRUE);
+}
+
+#ifndef STD_INSPIRED
+/*
+** A non-static declaration of tzsetwall in a system header file
+** may cause a warning about this upcoming static declaration...
+*/
+static
+#endif /* !defined STD_INSPIRED */
+void
+tzsetwall P((void))
+{
+	if (lcl_is_set < 0)
+		return;
+	lcl_is_set = -1;
+
+#ifdef ALL_STATE
+	if (lclptr == NULL) {
+		lclptr = (struct state *) malloc(sizeof *lclptr);
+		if (lclptr == NULL) {
+			settzname();	/* all we can do */
+			return;
+		}
+	}
+#endif /* defined ALL_STATE */
+	if (tzload((char *) NULL, lclptr) != 0)
+		gmtload(lclptr);
+	settzname();
+}
+
+void
+tzset P((void))
+{
+	register const char *	name;
+
+	name = getenv("TZ");
+	if (name == NULL) {
+		tzsetwall();
+		return;
+	}
+
+	if (lcl_is_set > 0  &&  strcmp(lcl_TZname, name) == 0)
+		return;
+	lcl_is_set = (strlen(name) < sizeof(lcl_TZname));
+	if (lcl_is_set)
+		(void) strcpy(lcl_TZname, name);
+
+#ifdef ALL_STATE
+	if (lclptr == NULL) {
+		lclptr = (struct state *) malloc(sizeof *lclptr);
+		if (lclptr == NULL) {
+			settzname();	/* all we can do */
+			return;
+		}
+	}
+#endif /* defined ALL_STATE */
+	if (*name == '\0') {
+		/*
+		** User wants it fast rather than right.
+		*/
+		lclptr->leapcnt = 0;		/* so, we're off a little */
+		lclptr->timecnt = 0;
+		lclptr->ttis[0].tt_gmtoff = 0;
+		lclptr->ttis[0].tt_abbrind = 0;
+		(void) strcpy(lclptr->chars, gmt);
+	} else if (tzload(name, lclptr) != 0)
+		if (name[0] == ':' || tzparse(name, lclptr, FALSE) != 0)
+			(void) gmtload(lclptr);
+	settzname();
+}
+
+/*
+** The easy way to behave "as if no library function calls" localtime
+** is to not call it--so we drop its guts into "localsub", which can be
+** freely called.  (And no, the PANS doesn't require the above behavior--
+** but it *is* desirable.)
+**
+** The unused offset argument is for the benefit of mktime variants.
+*/
+
+/*ARGSUSED*/
+static void
+localsub(timep, offset, tmp)
+const time_t * const	timep;
+const long		offset;
+struct tm * const	tmp;
+{
+	register struct state *		sp;
+	register const struct ttinfo *	ttisp;
+	register int			i;
+	const time_t			t = *timep;
+
+	sp = lclptr;
+#ifdef ALL_STATE
+	if (sp == NULL) {
+		gmtsub(timep, offset, tmp);
+		return;
+	}
+#endif /* defined ALL_STATE */
+	if (sp->timecnt == 0 || t < sp->ats[0]) {
+		i = 0;
+		while (sp->ttis[i].tt_isdst)
+			if (++i >= sp->typecnt) {
+				i = 0;
+				break;
+			}
+	} else {
+		for (i = 1; i < sp->timecnt; ++i)
+			if (t < sp->ats[i])
+				break;
+		i = sp->types[i - 1];
+	}
+	ttisp = &sp->ttis[i];
+	/*
+	** To get (wrong) behavior that's compatible with System V Release 2.0
+	** you'd replace the statement below with
+	**	t += ttisp->tt_gmtoff;
+	**	timesub(&t, 0L, sp, tmp);
+	*/
+	timesub(&t, ttisp->tt_gmtoff, sp, tmp);
+	tmp->tm_isdst = ttisp->tt_isdst;
+	tzname[tmp->tm_isdst] = &sp->chars[ttisp->tt_abbrind];
+#ifdef TM_ZONE
+	tmp->TM_ZONE = &sp->chars[ttisp->tt_abbrind];
+#endif /* defined TM_ZONE */
+}
+
+struct tm *
+localtime(timep)
+const time_t * const	timep;
+{
+	tzset();
+	localsub(timep, 0L, &tm);
+	return &tm;
+}
+
+/*
+** gmtsub is to gmtime as localsub is to localtime.
+*/
+
+static void
+gmtsub(timep, offset, tmp)
+const time_t * const	timep;
+const long		offset;
+struct tm * const	tmp;
+{
+	if (!gmt_is_set) {
+		gmt_is_set = TRUE;
+#ifdef ALL_STATE
+		gmtptr = (struct state *) malloc(sizeof *gmtptr);
+		if (gmtptr != NULL)
+#endif /* defined ALL_STATE */
+			gmtload(gmtptr);
+	}
+	timesub(timep, offset, gmtptr, tmp);
+#ifdef TM_ZONE
+	/*
+	** Could get fancy here and deliver something such as
+	** "GMT+xxxx" or "GMT-xxxx" if offset is non-zero,
+	** but this is no time for a treasure hunt.
+	*/
+	if (offset != 0)
+		tmp->TM_ZONE = wildabbr;
+	else {
+#ifdef ALL_STATE
+		if (gmtptr == NULL)
+			tmp->TM_ZONE = gmt;
+		else	tmp->TM_ZONE = gmtptr->chars;
+#endif /* defined ALL_STATE */
+#ifndef ALL_STATE
+		tmp->TM_ZONE = gmtptr->chars;
+#endif /* State Farm */
+	}
+#endif /* defined TM_ZONE */
+}
+
+struct tm *
+gmtime(timep)
+const time_t * const	timep;
+{
+	gmtsub(timep, 0L, &tm);
+	return &tm;
+}
+
+#ifdef STD_INSPIRED
+
+struct tm *
+offtime(timep, offset)
+const time_t * const	timep;
+const long		offset;
+{
+	gmtsub(timep, offset, &tm);
+	return &tm;
+}
+
+#endif /* defined STD_INSPIRED */
+
+static void
+timesub(timep, offset, sp, tmp)
+const time_t * const			timep;
+const long				offset;
+register const struct state * const	sp;
+register struct tm * const		tmp;
+{
+	register const struct lsinfo *	lp;
+	register long			days;
+	register long			rem;
+	register int			y;
+	register int			yleap;
+	register const int *		ip;
+	register long			corr;
+	register int			hit;
+	register int			i;
+
+	corr = 0;
+	hit = 0;
+#ifdef ALL_STATE
+	i = (sp == NULL) ? 0 : sp->leapcnt;
+#endif /* defined ALL_STATE */
+#ifndef ALL_STATE
+	i = sp->leapcnt;
+#endif /* State Farm */
+	while (--i >= 0) {
+		lp = &sp->lsis[i];
+		if (*timep >= lp->ls_trans) {
+			if (*timep == lp->ls_trans) {
+				hit = ((i == 0 && lp->ls_corr > 0) ||
+					lp->ls_corr > sp->lsis[i - 1].ls_corr);
+				if (hit)
+					while (i > 0 &&
+						sp->lsis[i].ls_trans ==
+						sp->lsis[i - 1].ls_trans + 1 &&
+						sp->lsis[i].ls_corr ==
+						sp->lsis[i - 1].ls_corr + 1) {
+							++hit;
+							--i;
+					}
+			}
+			corr = lp->ls_corr;
+			break;
+		}
+	}
+	days = *timep / SECSPERDAY;
+	rem = *timep % SECSPERDAY;
+#ifdef mc68k
+	if (*timep == 0x80000000) {
+		/*
+		** A 3B1 muffs the division on the most negative number.
+		*/
+		days = -24855;
+		rem = -11648;
+	}
+#endif /* defined mc68k */
+	rem += (offset - corr);
+	while (rem < 0) {
+		rem += SECSPERDAY;
+		--days;
+	}
+	while (rem >= SECSPERDAY) {
+		rem -= SECSPERDAY;
+		++days;
+	}
+	tmp->tm_hour = (int) (rem / SECSPERHOUR);
+	rem = rem % SECSPERHOUR;
+	tmp->tm_min = (int) (rem / SECSPERMIN);
+	tmp->tm_sec = (int) (rem % SECSPERMIN);
+	if (hit)
+		/*
+		** A positive leap second requires a special
+		** representation.  This uses "... ??:59:60" et seq.
+		*/
+		tmp->tm_sec += hit;
+	tmp->tm_wday = (int) ((EPOCH_WDAY + days) % DAYSPERWEEK);
+	if (tmp->tm_wday < 0)
+		tmp->tm_wday += DAYSPERWEEK;
+	y = EPOCH_YEAR;
+	if (days >= 0)
+		for ( ; ; ) {
+			yleap = isleap(y);
+			if (days < (long) year_lengths[yleap])
+				break;
+			++y;
+			days = days - (long) year_lengths[yleap];
+		}
+	else do {
+		--y;
+		yleap = isleap(y);
+		days = days + (long) year_lengths[yleap];
+	} while (days < 0);
+	tmp->tm_year = y - TM_YEAR_BASE;
+	tmp->tm_yday = (int) days;
+	ip = mon_lengths[yleap];
+	for (tmp->tm_mon = 0; days >= (long) ip[tmp->tm_mon]; ++(tmp->tm_mon))
+		days = days - (long) ip[tmp->tm_mon];
+	tmp->tm_mday = (int) (days + 1);
+	tmp->tm_isdst = 0;
+#ifdef TM_GMTOFF
+	tmp->TM_GMTOFF = offset;
+#endif /* defined TM_GMTOFF */
+}
+
+char *
+ctime(timep)
+const time_t * const	timep;
+{
+/*
+** Section 4.12.3.2 of X3.159-1989 requires that
+**	The ctime funciton converts the calendar time pointed to by timer
+**	to local time in the form of a string.  It is equivalent to
+**		asctime(localtime(timer))
+*/
+	return asctime(localtime(timep));
+}
+
+/*
+** Adapted from code provided by Robert Elz, who writes:
+**	The "best" way to do mktime I think is based on an idea of Bob
+**	Kridle's (so its said...) from a long time ago. (mtxinu!kridle now).
+**	It does a binary search of the time_t space.  Since time_t's are
+**	just 32 bits, its a max of 32 iterations (even at 64 bits it
+**	would still be very reasonable).
+*/
+
+#ifndef WRONG
+#define WRONG	(-1)
+#endif /* !defined WRONG */
+
+/*
+** Simplified normalize logic courtesy Paul Eggert (eggert@twinsun.com).
+*/
+
+static int
+increment_overflow(number, delta)
+int *	number;
+int	delta;
+{
+	int	number0;
+
+	number0 = *number;
+	*number += delta;
+	return (*number < number0) != (delta < 0);
+}
+
+static int
+normalize_overflow(tensptr, unitsptr, base)
+int * const	tensptr;
+int * const	unitsptr;
+const int	base;
+{
+	register int	tensdelta;
+
+	tensdelta = (*unitsptr >= 0) ?
+		(*unitsptr / base) :
+		(-1 - (-1 - *unitsptr) / base);
+	*unitsptr -= tensdelta * base;
+	return increment_overflow(tensptr, tensdelta);
+}
+
+static int
+tmcomp(atmp, btmp)
+register const struct tm * const atmp;
+register const struct tm * const btmp;
+{
+	register int	result;
+
+	if ((result = (atmp->tm_year - btmp->tm_year)) == 0 &&
+		(result = (atmp->tm_mon - btmp->tm_mon)) == 0 &&
+		(result = (atmp->tm_mday - btmp->tm_mday)) == 0 &&
+		(result = (atmp->tm_hour - btmp->tm_hour)) == 0 &&
+		(result = (atmp->tm_min - btmp->tm_min)) == 0)
+			result = atmp->tm_sec - btmp->tm_sec;
+	return result;
+}
+
+static time_t
+time2(tmp, funcp, offset, okayp)
+struct tm * const	tmp;
+void (* const		funcp) P((const time_t*, long, struct tm*));
+const long		offset;
+int * const		okayp;
+{
+	register const struct state *	sp;
+	register int			dir;
+	register int			bits;
+	register int			i, j ;
+	register int			saved_seconds;
+	time_t				newt;
+	time_t				t;
+	struct tm			yourtm, mytm;
+
+	*okayp = FALSE;
+	yourtm = *tmp;
+	if (normalize_overflow(&yourtm.tm_hour, &yourtm.tm_min, MINSPERHOUR))
+		return WRONG;
+	if (normalize_overflow(&yourtm.tm_mday, &yourtm.tm_hour, HOURSPERDAY))
+		return WRONG;
+	if (normalize_overflow(&yourtm.tm_year, &yourtm.tm_mon, MONSPERYEAR))
+		return WRONG;
+	/*
+	** Turn yourtm.tm_year into an actual year number for now.
+	** It is converted back to an offset from TM_YEAR_BASE later.
+	*/
+	if (increment_overflow(&yourtm.tm_year, TM_YEAR_BASE))
+		return WRONG;
+	while (yourtm.tm_mday <= 0) {
+		if (increment_overflow(&yourtm.tm_year, -1))
+			return WRONG;
+		yourtm.tm_mday += year_lengths[isleap(yourtm.tm_year)];
+	}
+	while (yourtm.tm_mday > DAYSPERLYEAR) {
+		yourtm.tm_mday -= year_lengths[isleap(yourtm.tm_year)];
+		if (increment_overflow(&yourtm.tm_year, 1))
+			return WRONG;
+	}
+	for ( ; ; ) {
+		i = mon_lengths[isleap(yourtm.tm_year)][yourtm.tm_mon];
+		if (yourtm.tm_mday <= i)
+			break;
+		yourtm.tm_mday -= i;
+		if (++yourtm.tm_mon >= MONSPERYEAR) {
+			yourtm.tm_mon = 0;
+			if (increment_overflow(&yourtm.tm_year, 1))
+				return WRONG;
+		}
+	}
+	if (increment_overflow(&yourtm.tm_year, -TM_YEAR_BASE))
+		return WRONG;
+	if (yourtm.tm_year + TM_YEAR_BASE < EPOCH_YEAR) {
+		/*
+		** We can't set tm_sec to 0, because that might push the
+		** time below the minimum representable time.
+		** Set tm_sec to 59 instead.
+		** This assumes that the minimum representable time is
+		** not in the same minute that a leap second was deleted from,
+		** which is a safer assumption than using 58 would be.
+		*/
+		if (increment_overflow(&yourtm.tm_sec, 1 - SECSPERMIN))
+			return WRONG;
+		saved_seconds = yourtm.tm_sec;
+		yourtm.tm_sec = SECSPERMIN - 1;
+	} else {
+		saved_seconds = yourtm.tm_sec;
+		yourtm.tm_sec = 0;
+	}
+	/*
+	** Calculate the number of magnitude bits in a time_t
+	** (this works regardless of whether time_t is
+	** signed or unsigned, though lint complains if unsigned).
+	*/
+	for (bits = 0, t = 1; t > 0; ++bits, t <<= 1)
+		continue;
+	/*
+	** If time_t is signed, then 0 is the median value,
+	** if time_t is unsigned, then 1 << bits is median.
+	*/
+	t = (t < 0) ? 0 : ((time_t) 1 << bits);
+	for ( ; ; ) {
+		(*funcp)(&t, offset, &mytm);
+		dir = tmcomp(&mytm, &yourtm);
+		if (dir != 0) {
+			if (bits-- < 0)
+				return WRONG;
+			if (bits < 0)
+				--t;
+			else if (dir > 0)
+				t -= (time_t) 1 << bits;
+			else	t += (time_t) 1 << bits;
+			continue;
+		}
+		if (yourtm.tm_isdst < 0 || mytm.tm_isdst == yourtm.tm_isdst)
+			break;
+		/*
+		** Right time, wrong type.
+		** Hunt for right time, right type.
+		** It's okay to guess wrong since the guess
+		** gets checked.
+		*/
+		/*
+		** The (void *) casts are the benefit of SunOS 3.3 on Sun 2's.
+		*/
+		sp = (const struct state *)
+			(((void *) funcp == (void *) localsub) ?
+			lclptr : gmtptr);
+#ifdef ALL_STATE
+		if (sp == NULL)
+			return WRONG;
+#endif /* defined ALL_STATE */
+		for (i = 0; i < sp->typecnt; ++i) {
+			if (sp->ttis[i].tt_isdst != yourtm.tm_isdst)
+				continue;
+			for (j = 0; j < sp->typecnt; ++j) {
+				if (sp->ttis[j].tt_isdst == yourtm.tm_isdst)
+					continue;
+				newt = t + sp->ttis[j].tt_gmtoff -
+					sp->ttis[i].tt_gmtoff;
+				(*funcp)(&newt, offset, &mytm);
+				if (tmcomp(&mytm, &yourtm) != 0)
+					continue;
+				if (mytm.tm_isdst != yourtm.tm_isdst)
+					continue;
+				/*
+				** We have a match.
+				*/
+				t = newt;
+				goto label;
+			}
+		}
+		return WRONG;
+	}
+label:
+	newt = t + saved_seconds;
+	if ((newt < t) != (saved_seconds < 0))
+		return WRONG;
+	t = newt;
+	(*funcp)(&t, offset, tmp);
+	*okayp = TRUE;
+	return t;
+}
+
+static time_t
+time1(tmp, funcp, offset)
+struct tm * const	tmp;
+void (* const		funcp) P((const time_t*, long, struct tm*));
+const long		offset;
+{
+	register time_t			t;
+	register const struct state *	sp;
+	register int			samei, otheri;
+	int				okay;
+
+	if (tmp->tm_isdst > 1)
+		tmp->tm_isdst = 1;
+	t = time2(tmp, funcp, offset, &okay);
+#ifdef PCTS
+	/*
+	** PCTS code courtesy Grant Sullivan (grant@osf.org).
+	*/
+	if (okay)
+		return t;
+	if (tmp->tm_isdst < 0)
+		tmp->tm_isdst = 0;	/* reset to std and try again */
+#endif /* defined PCTS */
+#ifndef PCTS
+	if (okay || tmp->tm_isdst < 0)
+		return t;
+#endif /* !defined PCTS */
+	/*
+	** We're supposed to assume that somebody took a time of one type
+	** and did some math on it that yielded a "struct tm" that's bad.
+	** We try to divine the type they started from and adjust to the
+	** type they need.
+	*/
+	/*
+	** The (void *) casts are the benefit of SunOS 3.3 on Sun 2's.
+	*/
+	sp = (const struct state *) (((void *) funcp == (void *) localsub) ?
+		lclptr : gmtptr);
+#ifdef ALL_STATE
+	if (sp == NULL)
+		return WRONG;
+#endif /* defined ALL_STATE */
+	for (samei = 0; samei < sp->typecnt; ++samei) {
+		if (sp->ttis[samei].tt_isdst != tmp->tm_isdst)
+			continue;
+		for (otheri = 0; otheri < sp->typecnt; ++otheri) {
+			if (sp->ttis[otheri].tt_isdst == tmp->tm_isdst)
+				continue;
+			tmp->tm_sec += sp->ttis[otheri].tt_gmtoff -
+					sp->ttis[samei].tt_gmtoff;
+			tmp->tm_isdst = !tmp->tm_isdst;
+			t = time2(tmp, funcp, offset, &okay);
+			if (okay)
+				return t;
+			tmp->tm_sec -= sp->ttis[otheri].tt_gmtoff -
+					sp->ttis[samei].tt_gmtoff;
+			tmp->tm_isdst = !tmp->tm_isdst;
+		}
+	}
+	return WRONG;
+}
+
+time_t
+mktime(tmp)
+struct tm * const	tmp;
+{
+	tzset();
+	return time1(tmp, localsub, 0L);
+}
+
+#ifdef STD_INSPIRED
+
+time_t
+timelocal(tmp)
+struct tm * const	tmp;
+{
+	tmp->tm_isdst = -1;	/* in case it wasn't initialized */
+	return mktime(tmp);
+}
+
+time_t
+timegm(tmp)
+struct tm * const	tmp;
+{
+	tmp->tm_isdst = 0;
+	return time1(tmp, gmtsub, 0L);
+}
+
+time_t
+timeoff(tmp, offset)
+struct tm * const	tmp;
+const long		offset;
+{
+	tmp->tm_isdst = 0;
+	return time1(tmp, gmtsub, offset);
+}
+
+#endif /* defined STD_INSPIRED */
+
+#ifdef CMUCS
+
+/*
+** The following is supplied for compatibility with
+** previous versions of the CMUCS runtime library.
+*/
+
+long
+gtime(tmp)
+struct tm * const	tmp;
+{
+	const time_t	t = mktime(tmp);
+
+	if (t == WRONG)
+		return -1;
+	return t;
+}
+
+#endif /* defined CMUCS */
+
+/*
+** XXX--is the below the right way to conditionalize??
+*/
+
+#ifdef STD_INSPIRED
+
+/*
+** IEEE Std 1003.1-1988 (POSIX) legislates that 536457599
+** shall correspond to "Wed Dec 31 23:59:59 GMT 1986", which
+** is not the case if we are accounting for leap seconds.
+** So, we provide the following conversion routines for use
+** when exchanging timestamps with POSIX conforming systems.
+*/
+
+static long
+leapcorr(timep)
+time_t *	timep;
+{
+	register struct state *		sp;
+	register struct lsinfo *	lp;
+	register int			i;
+
+	sp = lclptr;
+	i = sp->leapcnt;
+	while (--i >= 0) {
+		lp = &sp->lsis[i];
+		if (*timep >= lp->ls_trans)
+			return lp->ls_corr;
+	}
+	return 0;
+}
+
+time_t
+time2posix(t)
+time_t	t;
+{
+	tzset();
+	return t - leapcorr(&t);
+}
+
+time_t
+posix2time(t)
+time_t	t;
+{
+	time_t	x;
+	time_t	y;
+
+	tzset();
+	/*
+	** For a positive leap second hit, the result
+	** is not unique.  For a negative leap second
+	** hit, the corresponding time doesn't exist,
+	** so we return an adjacent second.
+	*/
+	x = t + leapcorr(&t);
+	y = x - leapcorr(&x);
+	if (y < t) {
+		do {
+			x++;
+			y = x - leapcorr(&x);
+		} while (y < t);
+		if (t != y)
+			return x - 1;
+	} else if (y > t) {
+		do {
+			--x;
+			y = x - leapcorr(&x);
+		} while (y > t);
+		if (t != y)
+			return x + 1;
+	}
+	return x;
+}
+
+#endif /* defined STD_INSPIRED */
diff --git a/lib/libc/stdtime/private.h b/lib/libc/stdtime/private.h
new file mode 100644
index 0000000..3ed6e0b
--- /dev/null
+++ b/lib/libc/stdtime/private.h
@@ -0,0 +1,200 @@
+#ifndef PRIVATE_H
+
+#define PRIVATE_H
+
+/* Stuff moved from Makefile.inc to reduce clutter */
+#ifndef TM_GMTOFF
+#define TM_GMTOFF	tm_gmtoff
+#define TM_ZONE		tm_zone
+#define STD_INSPIRED	1
+#define PCTS		1
+#define HAVE_LONG_DOUBLE 1
+#define TZDIR		"/usr/share/zoneinfo"
+#endif /* ndef TM_GMTOFF */
+
+/*
+** This header is for use ONLY with the time conversion code.
+** There is no guarantee that it will remain unchanged,
+** or that it will remain at all.
+** Do NOT copy it to any system include directory.
+** Thank you!
+*/
+
+/*
+** ID
+*/
+
+#ifndef lint
+#ifndef NOID
+/*static char	privatehid[] = "@(#)private.h	7.33";*/
+#endif /* !defined NOID */
+#endif /* !defined lint */
+
+/*
+** Defaults for preprocessor symbols.
+** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'.
+*/
+
+#ifndef HAVE_ADJTIME
+#define HAVE_ADJTIME		1
+#endif /* !defined HAVE_ADJTIME */
+
+#ifndef HAVE_SETTIMEOFDAY
+#define HAVE_SETTIMEOFDAY	3
+#endif /* !defined HAVE_SETTIMEOFDAY */
+
+#ifndef HAVE_UNISTD_H
+#define HAVE_UNISTD_H		1
+#endif /* !defined HAVE_UNISTD_H */
+
+/*
+** Nested includes
+*/
+
+#include "sys/types.h"	/* for time_t */
+#include "stdio.h"
+#include "ctype.h"
+#include "errno.h"
+#include "string.h"
+#include "limits.h"	/* for CHAR_BIT */
+#include "time.h"
+#include "stdlib.h"
+
+#if HAVE_UNISTD_H - 0
+#include "unistd.h"	/* for F_OK and R_OK */
+#endif /* HAVE_UNISTD_H - 0 */
+
+#if !(HAVE_UNISTD_H - 0)
+#ifndef F_OK
+#define F_OK	0
+#endif /* !defined F_OK */
+#ifndef R_OK
+#define R_OK	4
+#endif /* !defined R_OK */
+#endif /* !(HAVE_UNISTD_H - 0) */
+
+/*
+** Workarounds for compilers/systems.
+*/
+
+/*
+** SunOS 4.1.1 cc lacks const.
+*/
+
+#ifndef const
+#ifndef __STDC__
+#define const
+#endif /* !defined __STDC__ */
+#endif /* !defined const */
+
+/*
+** SunOS 4.1.1 cc lacks prototypes.
+*/
+
+#ifndef P
+#ifdef __STDC__
+#define P(x)	x
+#endif /* defined __STDC__ */
+#ifndef __STDC__
+#define P(x)	()
+#endif /* !defined __STDC__ */
+#endif /* !defined P */
+
+/*
+** SunOS 4.1.1 headers lack EXIT_SUCCESS.
+*/
+
+#ifndef EXIT_SUCCESS
+#define EXIT_SUCCESS	0
+#endif /* !defined EXIT_SUCCESS */
+
+/*
+** SunOS 4.1.1 headers lack EXIT_FAILURE.
+*/
+
+#ifndef EXIT_FAILURE
+#define EXIT_FAILURE	1
+#endif /* !defined EXIT_FAILURE */
+
+/*
+** SunOS 4.1.1 headers lack FILENAME_MAX.
+*/
+
+#ifndef FILENAME_MAX
+
+#ifndef MAXPATHLEN
+#ifdef unix
+#include "sys/param.h"
+#endif /* defined unix */
+#endif /* !defined MAXPATHLEN */
+
+#ifdef MAXPATHLEN
+#define FILENAME_MAX	MAXPATHLEN
+#endif /* defined MAXPATHLEN */
+#ifndef MAXPATHLEN
+#define FILENAME_MAX	1024		/* Pure guesswork */
+#endif /* !defined MAXPATHLEN */
+
+#endif /* !defined FILENAME_MAX */
+
+/*
+** SunOS 4.1.1 libraries lack remove.
+*/
+
+#ifndef remove
+extern int	unlink P((const char * filename));
+#define remove	unlink
+#endif /* !defined remove */
+
+/*
+** Finally, some convenience items.
+*/
+
+#ifndef TRUE
+#define TRUE	1
+#endif /* !defined TRUE */
+
+#ifndef FALSE
+#define FALSE	0
+#endif /* !defined FALSE */
+
+#ifndef INT_STRLEN_MAXIMUM
+/*
+** 302 / 1000 is log10(2.0) rounded up.
+** Subtract one for the sign bit;
+** add one for integer division truncation;
+** add one more for a minus sign.
+*/
+#define INT_STRLEN_MAXIMUM(type) \
+	((sizeof(type) * CHAR_BIT - 1) * 302 / 1000 + 2)
+#endif /* !defined INT_STRLEN_MAXIMUM */
+
+/*
+** INITIALIZE(x)
+*/
+
+#ifndef GNUC_or_lint
+#ifdef lint
+#define GNUC_or_lint
+#endif /* defined lint */
+#ifndef lint
+#ifdef __GNUC__
+#define GNUC_or_lint
+#endif /* defined __GNUC__ */
+#endif /* !defined lint */
+#endif /* !defined GNUC_or_lint */
+
+#ifndef INITIALIZE
+#ifdef GNUC_or_lint
+#define INITIALIZE(x)	((x) = 0)
+#endif /* defined GNUC_or_lint */
+#ifndef GNUC_or_lint
+#define INITIALIZE(x)
+#endif /* !defined GNUC_or_lint */
+#endif /* !defined INITIALIZE */
+
+/*
+** UNIX was a registered trademark of UNIX System Laboratories in 1993.
+*/
+
+#endif /* !defined PRIVATE_H */
diff --git a/lib/libc/stdtime/strftime.3 b/lib/libc/stdtime/strftime.3
new file mode 100644
index 0000000..b0647b3
--- /dev/null
+++ b/lib/libc/stdtime/strftime.3
@@ -0,0 +1,214 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strftime.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt STRFTIME 3
+.Os
+.Sh NAME
+.Nm strftime
+.Nd format date and time
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <time.h>
+.Fd #include <string.h>
+.Ft size_t
+.Fn strftime "char *buf" "size_t maxsize" "const char *format" "const struct tm *timeptr"
+.Sh DESCRIPTION
+The
+.Fn strftime
+function formats the information from
+.Fa timeptr
+into the buffer
+.Fa buf
+according to the string pointed to by
+.Fa format .
+.Pp
+The
+.Fa format
+string consists of zero or more conversion specifications and
+ordinary characters.
+All ordinary characters are copied directly into the buffer.
+A conversion specification consists of a percent sign
+.Dq Ql %
+and one other character.
+.Pp
+No more than
+.Fa maxsize
+characters will be placed into the array.
+If the total number of resulting characters, including the terminating
+null character, is not more than
+.Fa maxsize ,
+.Fn strftime
+returns the number of characters in the array, not counting the
+terminating null.
+Otherwise, zero is returned.
+.Pp
+Each conversion specification is replaced by the characters as
+follows which are then copied into the buffer.
+.Bl -tag -width "xxxx"
+.It Cm \&%A
+is replaced by national representation of the full weekday name.
+.It Cm %a
+is replaced by national representation of
+the abbreviated weekday name, where the abbreviation
+is the first three characters.
+.It Cm \&%B
+is replaced by national representation of the full month name.
+.It Cm %b
+is replaced by national representation of
+the abbreviated month name, where the abbreviation is
+the first three characters.
+.It Cm \&%C
+is replaced by (year / 100) as decimal number; single
+digits are preceded by a zero.
+.It Cm %c
+is replaced by national representation of time and date
+(the format is similar with produced by
+.Xr asctime 3 ) .
+.It Cm \&%D
+is equivalent to
+.Dq Li %m/%d/%y .
+.It Cm %d
+is replaced by the day of the month as a decimal number (01-31).
+.It Cm \&%E*
+POSIX locale extensions.
+The sequences
+%Ec %EC %Ex %Ey %EY
+%Od %Oe %OH %OI %Om %OM
+%OS %Ou %OU %OV %Ow %OW %Oy
+are supposed to provide alternate
+representations.
+.It Cm %e
+is replaced by the day of month as a decimal number (1-31); single
+digits are preceded by a blank.
+.It Cm \&%H
+is replaced by the hour (24-hour clock) as a decimal number (00-23).
+.It Cm %h
+the same as %b.
+.It Cm \&%I
+is replaced by the hour (12-hour clock) as a decimal number (01-12).
+.It Cm %j
+is replaced by the day of the year as a decimal number (001-366).
+.It Cm %k
+is replaced by the hour (24-hour clock) as a decimal number (0-23);
+single digits are preceded by a blank.
+.It Cm %l
+is replaced by the hour (12-hour clock) as a decimal number (1-12);
+single digits are preceded by a blank.
+.It Cm \&%M
+is replaced by the minute as a decimal number (00-59).
+.It Cm %m
+is replaced by the month as a decimal number (01-12).
+.It Cm %n
+is replaced by a newline.
+.It Cm \&%O*
+the same as %E*.
+.It Cm %p
+is replaced by national representation of either
+"ante meridiem"
+or
+"post meridiem"
+as appropriate.
+.It Cm \&%R
+is equivalent to
+.Dq Li %H:%M .
+.It Cm %r
+is equivalent to
+.Dq Li %I:%M:%S %p .
+.It Cm \&%S
+is replaced by the second as a decimal number (00-60).
+.It Cm %s
+is replaced by the number of seconds since the Epoch, UTC (see
+.Xr mktime 3 ) .
+.It Cm \&%T
+is equivalent to
+.Dq Li %H:%M:%S .
+.It Cm %t
+is replaced by a tab.
+.It Cm \&%U
+is replaced by the week number of the year (Sunday as the first day of
+the week) as a decimal number (00-53).
+.It Cm %u
+is replaced by the weekday (Monday as the first day of the week)
+as a decimal number (1-7).
+.It Cm \&%V
+is replaced by the week number of the year (the first
+Monday as the first day of week 1) as a
+decimal number (01-53).
+.It Cm %v
+is equivalent to
+.Dq Li %e-%b-%Y .
+.It Cm \&%W
+is replaced by the week number of the year (Monday as the first day of
+the week) as a decimal number (00-53).
+.It Cm %w
+is replaced by the weekday (Sunday as the first day of the week)
+as a decimal number (0-6).
+.It Cm \&%X
+is replaced by national representation of the time.
+.It Cm %x
+is replaced by national representation of the date.
+.It Cm \&%Y
+is replaced by the year with century as a decimal number.
+.It Cm %y
+is replaced by the year without century as a decimal number (00-99).
+.It Cm \&%Z
+is replaced by the time zone name.
+.It Cm %+
+is replaced by national representation of the date and time
+(the format is similar with produced by
+.Xr date 1 ) .
+.It Cm %%
+is replaced by
+.Ql % .
+.El
+.Sh SEE ALSO
+.Xr date 1 ,
+.Xr ctime 3 ,
+.Xr printf 1 ,
+.Xr printf 3
+.Sh STANDARDS
+The
+.Fn strftime
+function
+conforms to
+.St -ansiC .
+The
+.Ql %s
+conversion specification is an extension.
+.Sh BUGS
+There is no conversion specification for the phase of the moon.
diff --git a/lib/libc/stdtime/strftime.c b/lib/libc/stdtime/strftime.c
new file mode 100644
index 0000000..0ad723e
--- /dev/null
+++ b/lib/libc/stdtime/strftime.c
@@ -0,0 +1,576 @@
+/*
+ * Copyright (c) 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifdef LIBC_RCS
+static const char rcsid[] =
+	"$Id: strftime.c,v 1.5 1995/08/07 23:35:41 ache Exp $";
+#endif
+
+#ifndef lint
+#ifndef NOID
+static const char	elsieid[] = "@(#)strftime.c	7.38";
+/*
+** Based on the UCB version with the ID appearing below.
+** This is ANSIish only when "multibyte character == plain character".
+*/
+#endif /* !defined NOID */
+#endif /* !defined lint */
+
+#include "private.h"
+
+#ifndef LIBC_SCCS
+#ifndef lint
+static const char	sccsid[] = "@(#)strftime.c	5.4 (Berkeley) 3/14/89";
+#endif /* !defined lint */
+#endif /* !defined LIBC_SCCS */
+
+#include "tzfile.h"
+#include <fcntl.h>
+#include <locale.h>
+#include <rune.h>		/* for _PATH_LOCALE */
+#include <sys/stat.h>
+
+#define LOCALE_HOME _PATH_LOCALE
+
+struct lc_time_T {
+	const char *	mon[12];
+	const char *	month[12];
+	const char *	wday[7];
+	const char *	weekday[7];
+	const char *	X_fmt;
+	const char *	x_fmt;
+	const char *	c_fmt;
+	const char *	am;
+	const char *	pm;
+	const char *	date_fmt;
+};
+
+static struct lc_time_T		localebuf;
+static struct lc_time_T *	_loc P((void));
+static int using_locale;
+
+#define Locale	(using_locale ? &localebuf : &C_time_locale)
+
+static const struct lc_time_T	C_time_locale = {
+	{
+		"Jan", "Feb", "Mar", "Apr", "May", "Jun",
+		"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+	}, {
+		"January", "February", "March", "April", "May", "June",
+		"July", "August", "September", "October", "November", "December"
+	}, {
+		"Sun", "Mon", "Tue", "Wed",
+		"Thu", "Fri", "Sat"
+	}, {
+		"Sunday", "Monday", "Tuesday", "Wednesday",
+		"Thursday", "Friday", "Saturday"
+	},
+
+	/* X_fmt */
+	"%H:%M:%S",
+
+	/*
+	** x_fmt
+	** Since the C language standard calls for
+	** "date, using locale's date format," anything goes.
+	** Using just numbers (as here) makes Quakers happier;
+	** it's also compatible with SVR4.
+	*/
+	"%m/%d/%y",
+
+	/*
+	** c_fmt (ctime-compatible)
+	** Note that
+	**	"%a %b %d %H:%M:%S %Y"
+	** is used by Solaris 2.3.
+	*/
+	"%a %b %e %X %Y",
+
+	/* am */
+	"AM",
+
+	/* pm */
+	"PM",
+
+	/* date_fmt */
+	"%a %b %e %X %Z %Y"
+};
+
+static char *	_add P((const char *, char *, const char *));
+static char *	_conv P((int, const char *, char *, const char *));
+static char *	_fmt P((const char *, const struct tm *, char *, const char *));
+static char *   _secs P((const struct tm *, char *, const char *));
+
+size_t strftime P((char *, size_t, const char *, const struct tm *));
+
+extern char *	tzname[];
+
+size_t
+strftime(s, maxsize, format, t)
+	char *const s;
+	const size_t maxsize;
+	const char *const format;
+	const struct tm *const t;
+{
+	char *p;
+
+	tzset();
+	p = _fmt(((format == NULL) ? "%c" : format), t, s, s + maxsize);
+	if (p == s + maxsize)
+		return 0;
+	*p = '\0';
+	return p - s;
+}
+
+static char *
+_fmt(format, t, pt, ptlim)
+	const char *format;
+	const struct tm *const t;
+	char *pt;
+	const char *const ptlim;
+{
+	for ( ; *format; ++format) {
+		if (*format == '%') {
+label:
+			switch (*++format) {
+			case '\0':
+				--format;
+				break;
+			case 'A':
+				pt = _add((t->tm_wday < 0 || t->tm_wday > 6) ?
+					"?" : Locale->weekday[t->tm_wday],
+					pt, ptlim);
+				continue;
+			case 'a':
+				pt = _add((t->tm_wday < 0 || t->tm_wday > 6) ?
+					"?" : Locale->wday[t->tm_wday],
+					pt, ptlim);
+				continue;
+			case 'B':
+				pt = _add((t->tm_mon < 0 || t->tm_mon > 11) ?
+					"?" : Locale->month[t->tm_mon],
+					pt, ptlim);
+				continue;
+			case 'b':
+			case 'h':
+				pt = _add((t->tm_mon < 0 || t->tm_mon > 11) ?
+					"?" : Locale->mon[t->tm_mon],
+					pt, ptlim);
+				continue;
+			case 'C':
+				/*
+				** %C used to do a...
+				**	_fmt("%a %b %e %X %Y", t);
+				** ...whereas now POSIX 1003.2 calls for
+				** something completely different.
+				** (ado, 5/24/93)
+				*/
+				pt = _conv((t->tm_year + TM_YEAR_BASE) / 100,
+					"%02d", pt, ptlim);
+				continue;
+			case 'c':
+				pt = _fmt(Locale->c_fmt, t, pt, ptlim);
+				continue;
+			case 'D':
+				pt = _fmt("%m/%d/%y", t, pt, ptlim);
+				continue;
+			case 'd':
+				pt = _conv(t->tm_mday, "%02d", pt, ptlim);
+				continue;
+			case 'E':
+			case 'O':
+				/*
+				** POSIX locale extensions, a la
+				** Arnold Robbins' strftime version 3.0.
+				** The sequences
+				**	%Ec %EC %Ex %Ey %EY
+				**	%Od %oe %OH %OI %Om %OM
+				**	%OS %Ou %OU %OV %Ow %OW %Oy
+				** are supposed to provide alternate
+				** representations.
+				** (ado, 5/24/93)
+				*/
+				goto label;
+			case 'e':
+				pt = _conv(t->tm_mday, "%2d", pt, ptlim);
+				continue;
+			case 'H':
+				pt = _conv(t->tm_hour, "%02d", pt, ptlim);
+				continue;
+			case 'I':
+				pt = _conv((t->tm_hour % 12) ?
+					(t->tm_hour % 12) : 12,
+					"%02d", pt, ptlim);
+				continue;
+			case 'j':
+				pt = _conv(t->tm_yday + 1, "%03d", pt, ptlim);
+				continue;
+			case 'k':
+				/*
+				** This used to be...
+				**	_conv(t->tm_hour % 12 ?
+				**		t->tm_hour % 12 : 12, 2, ' ');
+				** ...and has been changed to the below to
+				** match SunOS 4.1.1 and Arnold Robbins'
+				** strftime version 3.0.  That is, "%k" and
+				** "%l" have been swapped.
+				** (ado, 5/24/93)
+				*/
+				pt = _conv(t->tm_hour, "%2d", pt, ptlim);
+				continue;
+#ifdef KITCHEN_SINK
+			case 'K':
+				/*
+				** After all this time, still unclaimed!
+				*/
+				pt = _add("kitchen sink", pt, ptlim);
+				continue;
+#endif /* defined KITCHEN_SINK */
+			case 'l':
+				/*
+				** This used to be...
+				**	_conv(t->tm_hour, 2, ' ');
+				** ...and has been changed to the below to
+				** match SunOS 4.1.1 and Arnold Robbin's
+				** strftime version 3.0.  That is, "%k" and
+				** "%l" have been swapped.
+				** (ado, 5/24/93)
+				*/
+				pt = _conv((t->tm_hour % 12) ?
+					(t->tm_hour % 12) : 12,
+					"%2d", pt, ptlim);
+				continue;
+			case 'M':
+				pt = _conv(t->tm_min, "%02d", pt, ptlim);
+				continue;
+			case 'm':
+				pt = _conv(t->tm_mon + 1, "%02d", pt, ptlim);
+				continue;
+			case 'n':
+				pt = _add("\n", pt, ptlim);
+				continue;
+			case 'p':
+				pt = _add((t->tm_hour >= 12) ?
+					Locale->pm :
+					Locale->am,
+					pt, ptlim);
+				continue;
+			case 'R':
+				pt = _fmt("%H:%M", t, pt, ptlim);
+				continue;
+			case 'r':
+				pt = _fmt("%I:%M:%S %p", t, pt, ptlim);
+				continue;
+			case 'S':
+				pt = _conv(t->tm_sec, "%02d", pt, ptlim);
+				continue;
+			case 's':
+				pt = _secs(t, pt, ptlim);
+				continue;
+			case 'T':
+				pt = _fmt("%H:%M:%S", t, pt, ptlim);
+				continue;
+			case 't':
+				pt = _add("\t", pt, ptlim);
+				continue;
+			case 'U':
+				pt = _conv((t->tm_yday + 7 - t->tm_wday) / 7,
+					"%02d", pt, ptlim);
+				continue;
+			case 'u':
+				/*
+				** From Arnold Robbins' strftime version 3.0:
+				** "ISO 8601: Weekday as a decimal number
+				** [1 (Monday) - 7]"
+				** (ado, 5/24/93)
+				*/
+				pt = _conv((t->tm_wday == 0) ? 7 : t->tm_wday,
+					"%d", pt, ptlim);
+				continue;
+			case 'V':
+				/*
+				** From Arnold Robbins' strftime version 3.0:
+				** "the week number of the year (the first
+				** Monday as the first day of week 1) as a
+				** decimal number (01-53).  The method for
+				** determining the week number is as specified
+				** by ISO 8601 (to wit: if the week containing
+				** January 1 has four or more days in the new
+				** year, then it is week 1, otherwise it is
+				** week 53 of the previous year and the next
+				** week is week 1)."
+				** (ado, 5/24/93)
+				*/
+				/*
+				** XXX--If January 1 falls on a Friday,
+				** January 1-3 are part of week 53 of the
+				** previous year.  By analogy, if January
+				** 1 falls on a Thursday, are December 29-31
+				** of the PREVIOUS year part of week 1???
+				** (ado 5/24/93)
+				*/
+				/*
+				** You are understood not to expect this.
+				*/
+				{
+					int	i;
+
+					i = (t->tm_yday + 10 - (t->tm_wday ?
+						(t->tm_wday - 1) : 6)) / 7;
+					if (i == 0) {
+						/*
+						** What day of the week does
+						** January 1 fall on?
+						*/
+						i = t->tm_wday -
+							(t->tm_yday - 1);
+						/*
+						** Fri Jan 1: 53
+						** Sun Jan 1: 52
+						** Sat Jan 1: 53 if previous
+						**		 year a leap
+						**		 year, else 52
+						*/
+						if (i == TM_FRIDAY)
+							i = 53;
+						else if (i == TM_SUNDAY)
+							i = 52;
+						else	i = isleap(t->tm_year +
+								TM_YEAR_BASE) ?
+								53 : 52;
+#ifdef XPG4_1994_04_09
+						/*
+						** As of 4/9/94, though,
+						** XPG4 calls for 53
+						** unconditionally.
+						*/
+						i = 53;
+#endif /* defined XPG4_1994_04_09 */
+					}
+					pt = _conv(i, "%02d", pt, ptlim);
+				}
+				continue;
+			case 'v':
+				/*
+				** From Arnold Robbins' strftime version 3.0:
+				** "date as dd-bbb-YYYY"
+				** (ado, 5/24/93)
+				*/
+				pt = _fmt("%e-%b-%Y", t, pt, ptlim);
+				continue;
+			case 'W':
+				pt = _conv((t->tm_yday + 7 -
+					(t->tm_wday ?
+					(t->tm_wday - 1) : 6)) / 7,
+					"%02d", pt, ptlim);
+				continue;
+			case 'w':
+				pt = _conv(t->tm_wday, "%d", pt, ptlim);
+				continue;
+			case 'X':
+				pt = _fmt(Locale->X_fmt, t, pt, ptlim);
+				continue;
+			case 'x':
+				pt = _fmt(Locale->x_fmt, t, pt, ptlim);
+				continue;
+			case 'y':
+				pt = _conv((t->tm_year + TM_YEAR_BASE) % 100,
+					"%02d", pt, ptlim);
+				continue;
+			case 'Y':
+				pt = _conv(t->tm_year + TM_YEAR_BASE, "%04d",
+					pt, ptlim);
+				continue;
+			case 'Z':
+				if (t->tm_zone != NULL)
+					pt = _add(t->tm_zone, pt, ptlim);
+				else
+				if (t->tm_isdst == 0 || t->tm_isdst == 1) {
+					pt = _add(tzname[t->tm_isdst],
+						pt, ptlim);
+				} else  pt = _add("?", pt, ptlim);
+				continue;
+			case '+':
+				pt = _fmt(Locale->date_fmt, t, pt, ptlim);
+				continue;
+			case '%':
+			/*
+			 * X311J/88-090 (4.12.3.5): if conversion char is
+			 * undefined, behavior is undefined.  Print out the
+			 * character itself as printf(3) also does.
+			 */
+			default:
+				break;
+			}
+		}
+		if (pt == ptlim)
+			break;
+		*pt++ = *format;
+	}
+	return pt;
+}
+
+static char *
+_conv(n, format, pt, ptlim)
+	const int n;
+	const char *const format;
+	char *const pt;
+	const char *const ptlim;
+{
+	char	buf[INT_STRLEN_MAXIMUM(int) + 1];
+
+	(void) sprintf(buf, format, n);
+	return _add(buf, pt, ptlim);
+}
+
+static char *
+_secs(t, pt, ptlim)
+	const struct tm *t;
+	char *pt;
+	const char *ptlim;
+{
+	char    buf[INT_STRLEN_MAXIMUM(int) + 1];
+	register time_t s;
+	struct tm tmp;
+
+	/* Make a copy, mktime(3) modifies the tm struct. */
+	tmp = *t;
+	s = mktime(&tmp);
+	(void) sprintf(buf, "%ld", s);
+	return _add(buf, pt, ptlim);
+}
+  
+static char *
+_add(str, pt, ptlim)
+	const char *str;
+	char *pt;
+	const char *const ptlim;
+{
+	while (pt < ptlim && (*pt = *str++) != '\0')
+		++pt;
+	return pt;
+}
+
+extern char *_PathLocale;
+
+int
+__time_load_locale(const char *name)
+{
+	static const char	lc_time[] = "LC_TIME";
+	static char *		locale_buf;
+	static char		locale_buf_C[] = "C";
+
+	int			fd;
+	char *			lbuf;
+	char *			p;
+	const char **		ap;
+	const char *		plim;
+	char			filename[FILENAME_MAX];
+	struct stat		st;
+	size_t			namesize;
+	size_t			bufsize;
+	int                     save_using_locale;
+
+	save_using_locale = using_locale;
+	using_locale = 0;
+
+	if (name == NULL)
+		goto no_locale;
+
+	if (!*name || !strcmp(name, "C") || !strcmp(name, "POSIX"))
+		return 0;
+
+	/*
+	** If the locale name is the same as our cache, use the cache.
+	*/
+	lbuf = locale_buf;
+	if (lbuf != NULL && strcmp(name, lbuf) == 0) {
+		p = lbuf;
+		for (ap = (const char **) &localebuf;
+			ap < (const char **) (&localebuf + 1);
+				++ap)
+					*ap = p += strlen(p) + 1;
+		using_locale = 1;
+		return 0;
+	}
+	/*
+	** Slurp the locale file into the cache.
+	*/
+	namesize = strlen(name) + 1;
+
+	snprintf(filename, sizeof filename, 
+		 "%s/%s/%s",
+		 _PathLocale, name, lc_time);
+	fd = open(filename, O_RDONLY);
+	if (fd < 0)
+		goto no_locale;
+	if (fstat(fd, &st) != 0)
+		goto bad_locale;
+	if (st.st_size <= 0)
+		goto bad_locale;
+	bufsize = namesize + st.st_size;
+	locale_buf = NULL;
+	lbuf = (lbuf == NULL || lbuf == locale_buf_C) ?
+		malloc(bufsize) : realloc(lbuf, bufsize);
+	if (lbuf == NULL)
+		goto bad_locale;
+	(void) strcpy(lbuf, name);
+	p = lbuf + namesize;
+	plim = p + st.st_size;
+	if (read(fd, p, (size_t) st.st_size) != st.st_size)
+		goto bad_lbuf;
+	if (close(fd) != 0)
+		goto bad_lbuf;
+	/*
+	** Parse the locale file into localebuf.
+	*/
+	if (plim[-1] != '\n')
+		goto bad_lbuf;
+	for (ap = (const char **) &localebuf;
+		ap < (const char **) (&localebuf + 1);
+			++ap) {
+				if (p == plim)
+					goto reset_locale;
+				*ap = p;
+				while (*p != '\n')
+					++p;
+				*p++ = '\0';
+	}
+	/*
+	** Record the successful parse in the cache.
+	*/
+	locale_buf = lbuf;
+
+	using_locale = 1;
+	return 0;
+
+reset_locale:
+	/*
+	 * XXX - This may not be the correct thing to do in this case.
+	 * setlocale() assumes that we left the old locale alone.
+	 */
+	locale_buf = locale_buf_C;
+	localebuf = C_time_locale;
+	save_using_locale = 0;
+bad_lbuf:
+	free(lbuf);
+bad_locale:
+	(void) close(fd);
+no_locale:
+	using_locale = save_using_locale;
+	return -1;
+}
diff --git a/lib/libc/stdtime/time2posix.3 b/lib/libc/stdtime/time2posix.3
new file mode 100644
index 0000000..846a52e
--- /dev/null
+++ b/lib/libc/stdtime/time2posix.3
@@ -0,0 +1,119 @@
+.TH TIME2POSIX 3
+.SH NAME
+time2posix, posix2time \- convert seconds since the Epoch
+.SH SYNOPSIS
+.nf
+.B #include <sys/types.h>
+.B #include <time.h>
+.PP
+.B time_t time2posix(t)
+.B time_t t
+.PP
+.B time_t posix2time(t)
+.B time_t t
+.PP
+.B cc ... -lz
+.fi
+.SH DESCRIPTION
+IEEE Standard 1003.1
+(POSIX)
+legislates that a time_t value of
+536457599 shall correspond to "Wed Dec 31 23:59:59 GMT 1986."
+This effectively implies that POSIX time_t's cannot include leap
+seconds and,
+therefore,
+that the system time must be adjusted as each leap occurs.
+.PP
+If the time package is configured with leap-second support
+enabled,
+however,
+no such adjustment is needed and
+time_t values continue to increase over leap events
+(as a true `seconds since...' value).
+This means that these values will differ from those required by POSIX
+by the net number of leap seconds inserted since the Epoch.
+.PP
+Typically this is not a problem as the type time_t is intended
+to be
+(mostly)
+opaque\(emtime_t values should only be obtained-from and
+passed-to functions such as
+.IR time(2) ,
+.IR localtime(3) ,
+.IR mktime(3) ,
+and
+.IR difftime(3) .
+However,
+POSIX gives an arithmetic
+expression for directly computing a time_t value from a given date/time,
+and the same relationship is assumed by some
+(usually older)
+applications.
+Any programs creating/dissecting time_t's
+using such a relationship will typically not handle intervals
+over leap seconds correctly.
+.PP
+The
+.I time2posix
+and
+.I posix2time
+functions are provided to address this time_t mismatch by converting
+between local time_t values and their POSIX equivalents.
+This is done by accounting for the number of time-base changes that
+would have taken place on a POSIX system as leap seconds were inserted
+or deleted.
+These converted values can then be used in lieu of correcting the older
+applications,
+or when communicating with POSIX-compliant systems.
+.PP
+.I Time2posix
+is single-valued.
+That is,
+every local time_t
+corresponds to a single POSIX time_t.
+.I Posix2time
+is less well-behaved:
+for a positive leap second hit the result is not unique,
+and for a negative leap second hit the corresponding
+POSIX time_t doesn't exist so an adjacent value is returned.
+Both of these are good indicators of the inferiority of the
+POSIX representation.
+.PP
+The following table summarizes the relationship between a time
+T and it's conversion to,
+and back from,
+the POSIX representation over the leap second inserted at the end of June,
+1993.
+.nf
+.ta \w'93/06/30 'u +\w'23:59:59 'u +\w'A+0 'u +\w'X=time2posix(T) 'u
+DATE	TIME	T	X=time2posix(T)	posix2time(X)
+93/06/30	23:59:59	A+0	B+0	A+0
+93/06/30	23:59:60	A+1	B+1	A+1 or A+2
+93/07/01	00:00:00	A+2	B+1	A+1 or A+2
+93/07/01	00:00:01	A+3	B+2	A+3
+
+A leap second deletion would look like...
+
+DATE	TIME	T	X=time2posix(T)	posix2time(X)
+??/06/30	23:59:58	A+0	B+0	A+0
+??/07/01	00:00:00	A+1	B+2	A+1
+??/07/01	00:00:01	A+2	B+3	A+2
+.sp
+.ce
+	[Note: posix2time(B+1) => A+0 or A+1]
+.fi
+.PP
+If leap-second support is not enabled,
+local time_t's and
+POSIX time_t's are equivalent,
+and both
+.I time2posix
+and
+.I posix2time
+degenerate to the identity function.
+.SH SEE ALSO
+difftime(3),
+localtime(3),
+mktime(3),
+time(2)
+.\" @(#)time2posix.3	7.3
diff --git a/lib/libc/stdtime/tzfile.5 b/lib/libc/stdtime/tzfile.5
new file mode 100644
index 0000000..4bff7de
--- /dev/null
+++ b/lib/libc/stdtime/tzfile.5
@@ -0,0 +1,122 @@
+.Dd September 13, 1994
+.Dt TZFILE 5
+.Os FreeBSD 2.0
+.Sh NAME
+.Nm tzfile
+.Nd time zone information
+.Sh SYNOPSIS
+.Fd #include <tzfile.h>
+.Sh DESCRIPTION
+The time zone information files used by
+.Xr tzset 3
+begin with bytes reserved for future use,
+followed by four four-byte values of type
+.Fa long ,
+written in a ``standard'' byte order
+(the high-order byte of the value is written first).
+These values are,
+in order:
+.Pp
+.Bl -tag -compact -width tzh_ttisstdcnt
+.It Li tzh_ttisstdcnt
+The number of standard/wall indicators stored in the file.
+.It Li tzh_leapcnt
+The number of leap seconds for which data is stored in the file.
+.It Li tzh_timecnt
+The number of ``transition times'' for which data is stored
+in the file.
+.It Li tzh_typecnt
+The number of ``local time types'' for which data is stored
+in the file (must not be zero).
+.It Li tzh_charcnt
+The number of characters of ``time zone abbreviation strings''
+stored in the file.
+.El
+.Pp
+The above header is followed by
+.Li tzh_timecnt
+four-byte values of type
+.Fa long ,
+sorted in ascending order.
+These values are written in ``standard'' byte order.
+Each is used as a transition time (as returned by
+.Xr time 2 )
+at which the rules for computing local time change.
+Next come
+.Li tzh_timecnt
+one-byte values of type
+.Fa "unsigned char" ;
+each one tells which of the different types of ``local time'' types
+described in the file is associated with the same-indexed transition time.
+These values serve as indices into an array of
+.Fa ttinfo
+structures that appears next in the file;
+these structures are defined as follows:
+.Pp
+.Bd -literal -offset indent
+struct ttinfo {
+	long	tt_gmtoff;
+	int	tt_isdst;
+	unsigned int	tt_abbrind;
+};
+.Ed
+.Pp
+Each structure is written as a four-byte value for
+.Li tt_gmtoff
+of type
+.Fa long ,
+in a standard byte order, followed by a one-byte value for
+.Li tt_isdst
+and a one-byte value for
+.Li tt_abbrind .
+In each structure,
+.Li tt_gmtoff
+gives the number of seconds to be added to GMT,
+.Li tt_isdst
+tells whether
+.Li tm_isdst
+should be set by
+.Xr localtime 3
+and
+.Li tt_abbrind
+serves as an index into the array of time zone abbreviation characters
+that follow the
+.Li ttinfo
+structure(s) in the file.
+.Pp
+Then there are
+.Li tzh_leapcnt
+pairs of four-byte values, written in standard byte order;
+the first value of each pair gives the time
+(as returned by
+.Xr time 2 )
+at which a leap second occurs;
+the second gives the
+.Em total
+number of leap seconds to be applied after the given time.
+The pairs of values are sorted in ascending order by time.
+.Pp
+Finally there are
+.Li tzh_ttisstdcnt
+standard/wall indicators, each stored as a one-byte value;
+they tell whether the transition times associated with local time types
+were specified as standard time or wall clock time,
+and are used when a time zone file is used in handling POSIX-style
+time zone environment variables.
+.Pp
+.Nm localtime
+uses the first standard-time
+.Li ttinfo
+structure in the file
+(or simply the first
+.Li ttinfo
+structure in the absence of a standard-time structure)
+if either
+.Li tzh_timecnt
+is zero or the time argument is less than the first transition time recorded
+in the file.
+.Sh SEE ALSO
+.Xr ctime 3 ,
+.Xr time2posix 3 ,
+.Xr zic 8
+.\" @(#)tzfile.5	7.2
diff --git a/lib/libc/stdtime/tzfile.h b/lib/libc/stdtime/tzfile.h
new file mode 100644
index 0000000..4ba0025
--- /dev/null
+++ b/lib/libc/stdtime/tzfile.h
@@ -0,0 +1,180 @@
+#ifndef TZFILE_H
+
+#define TZFILE_H
+
+/*
+** This header is for use ONLY with the time conversion code.
+** There is no guarantee that it will remain unchanged,
+** or that it will remain at all.
+** Do NOT copy it to any system include directory.
+** Thank you!
+*/
+
+/*
+** ID
+*/
+
+#ifndef lint
+#ifndef NOID
+/*static char	tzfilehid[] = "@(#)tzfile.h	7.6";*/
+#endif /* !defined NOID */
+#endif /* !defined lint */
+
+/*
+** Information about time zone files.
+*/
+
+#ifndef TZDIR
+#define TZDIR	"/usr/share/zoneinfo" /* Time zone object file directory */
+#endif /* !defined TZDIR */
+
+#ifndef TZDEFAULT
+#define TZDEFAULT	"/etc/localtime"
+#endif /* !defined TZDEFAULT */
+
+#ifndef TZDEFRULES
+#define TZDEFRULES	"posixrules"
+#endif /* !defined TZDEFRULES */
+
+/*
+** Each file begins with. . .
+*/
+
+struct tzhead {
+	char	tzh_reserved[20];	/* reserved for future use */
+	char	tzh_ttisgmtcnt[4];	/* coded number of trans. time flags */
+	char	tzh_ttisstdcnt[4];	/* coded number of trans. time flags */
+	char	tzh_leapcnt[4];		/* coded number of leap seconds */
+	char	tzh_timecnt[4];		/* coded number of transition times */
+	char	tzh_typecnt[4];		/* coded number of local time types */
+	char	tzh_charcnt[4];		/* coded number of abbr. chars */
+};
+
+/*
+** . . .followed by. . .
+**
+**	tzh_timecnt (char [4])s		coded transition times a la time(2)
+**	tzh_timecnt (unsigned char)s	types of local time starting at above
+**	tzh_typecnt repetitions of
+**		one (char [4])		coded GMT offset in seconds
+**		one (unsigned char)	used to set tm_isdst
+**		one (unsigned char)	that's an abbreviation list index
+**	tzh_charcnt (char)s		'\0'-terminated zone abbreviations
+**	tzh_leapcnt repetitions of
+**		one (char [4])		coded leap second transition times
+**		one (char [4])		total correction after above
+**	tzh_ttisstdcnt (char)s		indexed by type; if TRUE, transition
+**					time is standard time, if FALSE,
+**					transition time is wall clock time
+**					if absent, transition times are
+**					assumed to be wall clock time
+**	tzh_ttisgmtcnt (char)s		indexed by type; if TRUE, transition
+**					time is GMT, if FALSE,
+**					transition time is local time
+**					if absent, transition times are
+**					assumed to be local time
+*/
+
+/*
+** In the current implementation, "tzset()" refuses to deal with files that
+** exceed any of the limits below.
+*/
+
+#ifndef TZ_MAX_TIMES
+/*
+** The TZ_MAX_TIMES value below is enough to handle a bit more than a
+** year's worth of solar time (corrected daily to the nearest second) or
+** 138 years of Pacific Presidential Election time
+** (where there are three time zone transitions every fourth year).
+*/
+#define TZ_MAX_TIMES	370
+#endif /* !defined TZ_MAX_TIMES */
+
+#ifndef TZ_MAX_TYPES
+#ifndef NOSOLAR
+#define TZ_MAX_TYPES	256 /* Limited by what (unsigned char)'s can hold */
+#endif /* !defined NOSOLAR */
+#ifdef NOSOLAR
+/*
+** Must be at least 14 for Europe/Riga as of Jan 12 1995,
+** as noted by Earl Chew <earl@hpato.aus.hp.com>.
+*/
+#define TZ_MAX_TYPES	20	/* Maximum number of local time types */
+#endif /* !defined NOSOLAR */
+#endif /* !defined TZ_MAX_TYPES */
+
+#ifndef TZ_MAX_CHARS
+#define TZ_MAX_CHARS	50	/* Maximum number of abbreviation characters */
+				/* (limited by what unsigned chars can hold) */
+#endif /* !defined TZ_MAX_CHARS */
+
+#ifndef TZ_MAX_LEAPS
+#define TZ_MAX_LEAPS	50	/* Maximum number of leap second corrections */
+#endif /* !defined TZ_MAX_LEAPS */
+
+#define SECSPERMIN	60
+#define MINSPERHOUR	60
+#define HOURSPERDAY	24
+#define DAYSPERWEEK	7
+#define DAYSPERNYEAR	365
+#define DAYSPERLYEAR	366
+#define SECSPERHOUR	(SECSPERMIN * MINSPERHOUR)
+#define SECSPERDAY	((long) SECSPERHOUR * HOURSPERDAY)
+#define MONSPERYEAR	12
+
+#define TM_SUNDAY	0
+#define TM_MONDAY	1
+#define TM_TUESDAY	2
+#define TM_WEDNESDAY	3
+#define TM_THURSDAY	4
+#define TM_FRIDAY	5
+#define TM_SATURDAY	6
+
+#define TM_JANUARY	0
+#define TM_FEBRUARY	1
+#define TM_MARCH	2
+#define TM_APRIL	3
+#define TM_MAY		4
+#define TM_JUNE		5
+#define TM_JULY		6
+#define TM_AUGUST	7
+#define TM_SEPTEMBER	8
+#define TM_OCTOBER	9
+#define TM_NOVEMBER	10
+#define TM_DECEMBER	11
+
+#define TM_YEAR_BASE	1900
+
+#define EPOCH_YEAR	1970
+#define EPOCH_WDAY	TM_THURSDAY
+
+/*
+** Accurate only for the past couple of centuries;
+** that will probably do.
+*/
+
+#define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0)
+
+#ifndef USG
+
+/*
+** Use of the underscored variants may cause problems if you move your code to
+** certain System-V-based systems; for maximum portability, use the
+** underscore-free variants.  The underscored variants are provided for
+** backward compatibility only; they may disappear from future versions of
+** this file.
+*/
+
+#define SECS_PER_MIN	SECSPERMIN
+#define MINS_PER_HOUR	MINSPERHOUR
+#define HOURS_PER_DAY	HOURSPERDAY
+#define DAYS_PER_WEEK	DAYSPERWEEK
+#define DAYS_PER_NYEAR	DAYSPERNYEAR
+#define DAYS_PER_LYEAR	DAYSPERLYEAR
+#define SECS_PER_HOUR	SECSPERHOUR
+#define SECS_PER_DAY	SECSPERDAY
+#define MONS_PER_YEAR	MONSPERYEAR
+
+#endif /* !defined USG */
+
+#endif /* !defined TZFILE_H */
diff --git a/lib/libc/string/Makefile.inc b/lib/libc/string/Makefile.inc
new file mode 100644
index 0000000..336476a
--- /dev/null
+++ b/lib/libc/string/Makefile.inc
@@ -0,0 +1,97 @@
+#	@(#)Makefile.inc	8.1 (Berkeley) 6/4/93
+
+.PATH: ${.CURDIR}/${MACHINE}/string ${.CURDIR}/string
+
+CFLAGS += -I${.CURDIR}/locale
+# machine-independent string sources
+SRCS+=	memccpy.c strcasecmp.c strcoll.c strdup.c strerror.c \
+	strmode.c strtok.c strxfrm.c
+
+# machine-dependent string sources
+.include "${.CURDIR}/${MACHINE}/string/Makefile.inc"
+
+# If no machine specific bzero(3), build one out of memset(3).
+.if empty(SRCS:Mbzero.S)
+OBJS+=	bzero.o
+bzero.o: memset.c
+	${CC} -DBZERO ${CFLAGS} -c ${.ALLSRC} -o ${.TARGET}
+	@${LD} -x -r ${.TARGET}
+	@mv a.out ${.TARGET}
+
+bzero.po: memset.c
+	${CC} -DBZERO ${CFLAGS} -c -p ${.ALLSRC} -o ${.TARGET}
+	@${LD} -X -r ${.TARGET}
+	@mv a.out ${.TARGET}
+.endif
+
+# If no machine specific memmove(3), build one out of bcopy(3).
+.if empty(SRCS:Mmemmove.S)
+OBJS+=	memmove.o
+memmove.o: bcopy.c
+	${CC} -DMEMMOVE ${CFLAGS} -c ${.ALLSRC} -o ${.TARGET}
+	@${LD} -x -r ${.TARGET}
+	@mv a.out ${.TARGET}
+
+memmove.po: bcopy.c
+	${CC} -DMEMMOVE ${CFLAGS} -c -p ${.ALLSRC} -o ${.TARGET}
+	@${LD} -X -r ${.TARGET}
+	@mv a.out ${.TARGET}
+.endif
+
+# If no machine specific memcpy(3), build one out of bcopy(3).
+.if empty(SRCS:Mmemmove.S)
+OBJS+=	memcpy.o
+memcpy.o: bcopy.c
+	${CC} -DMEMCOPY ${CFLAGS} -c ${.ALLSRC} -o ${.TARGET}
+	@${LD} -x -r ${.TARGET}
+	@mv a.out ${.TARGET}
+
+memcpy.po: bcopy.c
+	${CC} -DMEMCOPY ${CFLAGS} -c -p ${.ALLSRC} -o ${.TARGET}
+	@${LD} -X -r ${.TARGET}
+	@mv a.out ${.TARGET}
+.endif
+
+# If no machine specific strchr(3), build one out of index(3).
+.if empty(SRCS:Mstrchr.S)
+OBJS+=	strchr.o
+strchr.o: index.c
+	${CC} -DSTRCHR ${CFLAGS} -c ${.ALLSRC} -o ${.TARGET}
+	@${LD} -x -r ${.TARGET}
+	@mv a.out ${.TARGET}
+
+strchr.po: index.c
+	${CC} -DSTRCHR ${CFLAGS} -c -p ${.ALLSRC} -o ${.TARGET}
+	@${LD} -X -r ${.TARGET}
+	@mv a.out ${.TARGET}
+.endif
+
+# If no machine specific strrchr(3), build one out of rindex(3).
+.if empty(SRCS:Mstrrchr.S)
+OBJS+=	strrchr.o
+strrchr.o: rindex.c
+	${CC} -DSTRRCHR ${CFLAGS} -c ${.ALLSRC} -o ${.TARGET}
+	@${LD} -x -r ${.TARGET}
+	@mv a.out ${.TARGET}
+
+strrchr.po: rindex.c
+	${CC} -DSTRRCHR ${CFLAGS} -c -p ${.ALLSRC} -o ${.TARGET}
+	@${LD} -X -r ${.TARGET}
+	@mv a.out ${.TARGET}
+.endif
+#
+MAN3+=	string/bcmp.3 string/bcopy.3 string/bstring.3 string/bzero.3 \
+	string/ffs.3 string/index.3 string/memccpy.3 string/memchr.3 \
+	string/memcmp.3 string/memcpy.3 string/memmove.3 string/memset.3 \
+	string/rindex.3 string/strcasecmp.3 string/strcat.3 string/strchr.3 \
+	string/strcmp.3 string/strcoll.3 string/strcpy.3 string/strcspn.3 \
+	string/string.3 string/strlen.3 string/strmode.3 \
+	string/strdup.3 string/strerror.3 string/strpbrk.3 string/strrchr.3 \
+	string/strsep.3 string/strspn.3 string/strstr.3 string/strtok.3 \
+	string/strxfrm.3 string/swab.3
+#
+MLINKS+=strcasecmp.3 strncasecmp.3
+MLINKS+=strcat.3 strncat.3
+MLINKS+=strcmp.3 strncmp.3
+MLINKS+=strcpy.3 strncpy.3
+MLINKS+=strerror.3 perror.3
diff --git a/lib/libc/string/bcmp.3 b/lib/libc/string/bcmp.3
new file mode 100644
index 0000000..5b02740
--- /dev/null
+++ b/lib/libc/string/bcmp.3
@@ -0,0 +1,72 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek.
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)bcmp.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt BCMP 3
+.Os BSD 4.2
+.Sh NAME
+.Nm bcmp
+.Nd compare byte string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft int
+.Fn bcmp "const void *b1" "const void *b2" "size_t len"
+.Sh DESCRIPTION
+The
+.Fn bcmp
+function
+compares byte string
+.Fa b1
+against byte string
+.Fa b2 ,
+returning zero if they are identical, non-zero otherwise.
+Both strings are assumed to be
+.Fa len
+bytes long.
+Zero-length strings are always identical.
+.Pp
+The strings may overlap.
+.Sh SEE ALSO
+.Xr bcmp 3 ,
+.Xr memcmp 3 ,
+.Xr strcasecmp 3 ,
+.Xr strcmp 3 ,
+.Xr strcoll 3 ,
+.Xr strxfrm 3
+.Sh HISTORY
+A
+.Fn bcmp
+function first appeared in 
+.Bx 4.2 .
diff --git a/lib/libc/string/bcmp.c b/lib/libc/string/bcmp.c
new file mode 100644
index 0000000..5a3ae61
--- /dev/null
+++ b/lib/libc/string/bcmp.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 1987, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bcmp.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <string.h>
+
+/*
+ * bcmp -- vax cmpc3 instruction
+ */
+int
+bcmp(b1, b2, length)
+	const void *b1, *b2;
+	register size_t length;
+{
+	register char *p1, *p2;
+
+	if (length == 0)
+		return(0);
+	p1 = (char *)b1;
+	p2 = (char *)b2;
+	do
+		if (*p1++ != *p2++)
+			break;
+	while (--length);
+	return(length);
+}
diff --git a/lib/libc/string/bcopy.3 b/lib/libc/string/bcopy.3
new file mode 100644
index 0000000..7f6a14c
--- /dev/null
+++ b/lib/libc/string/bcopy.3
@@ -0,0 +1,71 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)bcopy.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt BCOPY 3
+.Os BSD 4.2
+.Sh NAME
+.Nm bcopy
+.Nd copy byte string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft void
+.Fn bcopy "const void *src" "void *dst" "size_t len"
+.Sh DESCRIPTION
+The
+.Fn bcopy
+function
+copies
+.Fa len
+bytes from string
+.Fa src
+to string
+.Fa dst .
+The two strings may overlap.
+If
+.Fa len
+is zero, no bytes are copied.
+.Sh SEE ALSO
+.Xr memccpy 3 ,
+.Xr memcpy 3 ,
+.Xr memmove 3 ,
+.Xr strcpy 3 ,
+.Xr strncpy 3
+.Sh HISTORY
+A
+.Fn bcopy
+function appeared in 
+.Bx 4.2 .
diff --git a/lib/libc/string/bcopy.c b/lib/libc/string/bcopy.c
new file mode 100644
index 0000000..f90b09c
--- /dev/null
+++ b/lib/libc/string/bcopy.c
@@ -0,0 +1,139 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bcopy.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <string.h>
+
+/*
+ * sizeof(word) MUST BE A POWER OF TWO
+ * SO THAT wmask BELOW IS ALL ONES
+ */
+typedef	int word;		/* "word" used for optimal copy speed */
+
+#define	wsize	sizeof(word)
+#define	wmask	(wsize - 1)
+
+/*
+ * Copy a block of memory, handling overlap.
+ * This is the routine that actually implements
+ * (the portable versions of) bcopy, memcpy, and memmove.
+ */
+#ifdef MEMCOPY
+void *
+memcpy(dst0, src0, length)
+#else
+#ifdef MEMMOVE
+void *
+memmove(dst0, src0, length)
+#else
+void
+bcopy(src0, dst0, length)
+#endif
+#endif
+	void *dst0;
+	const void *src0;
+	register size_t length;
+{
+	register char *dst = dst0;
+	register const char *src = src0;
+	register size_t t;
+
+	if (length == 0 || dst == src)		/* nothing to do */
+		goto done;
+
+	/*
+	 * Macros: loop-t-times; and loop-t-times, t>0
+	 */
+#define	TLOOP(s) if (t) TLOOP1(s)
+#define	TLOOP1(s) do { s; } while (--t)
+
+	if ((unsigned long)dst < (unsigned long)src) {
+		/*
+		 * Copy forward.
+		 */
+		t = (int)src;	/* only need low bits */
+		if ((t | (int)dst) & wmask) {
+			/*
+			 * Try to align operands.  This cannot be done
+			 * unless the low bits match.
+			 */
+			if ((t ^ (int)dst) & wmask || length < wsize)
+				t = length;
+			else
+				t = wsize - (t & wmask);
+			length -= t;
+			TLOOP1(*dst++ = *src++);
+		}
+		/*
+		 * Copy whole words, then mop up any trailing bytes.
+		 */
+		t = length / wsize;
+		TLOOP(*(word *)dst = *(word *)src; src += wsize; dst += wsize);
+		t = length & wmask;
+		TLOOP(*dst++ = *src++);
+	} else {
+		/*
+		 * Copy backwards.  Otherwise essentially the same.
+		 * Alignment works as before, except that it takes
+		 * (t&wmask) bytes to align, not wsize-(t&wmask).
+		 */
+		src += length;
+		dst += length;
+		t = (int)src;
+		if ((t | (int)dst) & wmask) {
+			if ((t ^ (int)dst) & wmask || length <= wsize)
+				t = length;
+			else
+				t &= wmask;
+			length -= t;
+			TLOOP1(*--dst = *--src);
+		}
+		t = length / wsize;
+		TLOOP(src -= wsize; dst -= wsize; *(word *)dst = *(word *)src);
+		t = length & wmask;
+		TLOOP(*--dst = *--src);
+	}
+done:
+#if defined(MEMCOPY) || defined(MEMMOVE)
+	return (dst0);
+#else
+	return;
+#endif
+}
diff --git a/lib/libc/string/bstring.3 b/lib/libc/string/bstring.3
new file mode 100644
index 0000000..10d91a2
--- /dev/null
+++ b/lib/libc/string/bstring.3
@@ -0,0 +1,109 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek.
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)bstring.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt BSTRING 3
+.Os
+.Sh NAME
+.Nm bcmp ,
+.Nm bcopy ,
+.Nm bzero ,
+.Nm memccpy ,
+.Nm memchr ,
+.Nm memcmp ,
+.Nm memcpy ,
+.Nm memmove,
+.Nm memset
+.Nd byte string operations
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft int
+.Fn bcmp "const void *b1" "const void *b2" "size_t len"
+.Ft void
+.Fn bcopy "const void *src" "void *dst" "size_t len"
+.Ft void
+.Fn bzero "void *b" "size_t len"
+.Ft void *
+.Fn memchr "const void *b" "int c" "size_t len"
+.Ft int
+.Fn memcmp "const void *b1" "const void *b2" "size_t len"
+.Ft void *
+.Fn memccpy "void *dst" "const void *src" "int c" "size_t len"
+.Ft void *
+.Fn memcpy "void *dst" "const void *src" "size_t len"
+.Ft void *
+.Fn memmove "void *dst" "const void *src" "size_t len"
+.Ft void *
+.Fn memset "void *b" "int c" "size_t len"
+.Sh DESCRIPTION
+These functions operate on variable length strings of bytes.
+They do not check for terminating null bytes as the routines
+listed in
+.Xr string 3
+do.
+.Pp
+See the specific manual pages for more information.
+.Sh SEE ALSO
+.Xr bcmp 3 ,
+.Xr bcopy 3 ,
+.Xr bzero 3 ,
+.Xr memccpy 3 ,
+.Xr memchr 3 ,
+.Xr memcmp 3 ,
+.Xr memcpy 3 ,
+.Xr memmove 3 ,
+.Xr memset 3
+.Sh STANDARDS
+The functions
+.Fn memchr ,
+.Fn memcmp ,
+.Fn memcpy ,
+.Fn memmove ,
+and
+.Fn memset
+conform to
+.St -ansiC .
+.Sh HISTORY
+The functions
+.Fn bzero
+and
+.Fn memccpy
+appeared in
+.Bx 4.3 ;
+the functions
+.Fn bcmp ,
+.Fn bcopy ,
+appeared in
+.Bx 4.2 .
diff --git a/lib/libc/string/bzero.3 b/lib/libc/string/bzero.3
new file mode 100644
index 0000000..46a20ab
--- /dev/null
+++ b/lib/libc/string/bzero.3
@@ -0,0 +1,68 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)bzero.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt BZERO 3
+.Os BSD 4.3
+.Sh NAME
+.Nm bzero
+.Nd write zeroes to a byte string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft void
+.Fn bzero "void *b" "size_t len"
+.Sh DESCRIPTION
+The
+.Fn bzero
+function
+writes
+.Fa len
+zero bytes to the string
+.Fa b .
+If
+.Fa len
+is zero,
+.Fn bzero
+does nothing.
+.Sh SEE ALSO
+.Xr memset 3 ,
+.Xr swab 3
+.Sh HISTORY
+A
+.Fn bzero
+function
+appeared in 
+.Bx 4.3 .
diff --git a/lib/libc/string/ffs.3 b/lib/libc/string/ffs.3
new file mode 100644
index 0000000..451b7b9
--- /dev/null
+++ b/lib/libc/string/ffs.3
@@ -0,0 +1,61 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek.
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)ffs.3	8.2 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt FFS 3
+.Os
+.Sh NAME
+.Nm ffs
+.Nd find first bit set in a bit string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft int
+.Fn ffs "int value"
+.Sh DESCRIPTION
+The
+.Fn ffs
+function finds the first bit set in
+.Fa value
+and returns the index of that bit.
+Bits are numbered starting from 1, starting at the right-most
+bit.
+A return value of 0 means that the argument was zero.
+.Sh SEE ALSO
+.Xr bitstring 3
+.Sh HISTORY
+The
+.Fn ffs
+function appeared in
+.Bx 4.3 .
diff --git a/lib/libc/string/ffs.c b/lib/libc/string/ffs.c
new file mode 100644
index 0000000..099ff8e
--- /dev/null
+++ b/lib/libc/string/ffs.c
@@ -0,0 +1,54 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ffs.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <string.h>
+
+/*
+ * ffs -- vax ffs instruction
+ */
+int
+ffs(mask)
+	register int mask;
+{
+	register int bit;
+
+	if (mask == 0)
+		return(0);
+	for (bit = 1; !(mask & 1); bit++)
+		mask >>= 1;
+	return(bit);
+}
diff --git a/lib/libc/string/index.3 b/lib/libc/string/index.3
new file mode 100644
index 0000000..eb49c8f
--- /dev/null
+++ b/lib/libc/string/index.3
@@ -0,0 +1,80 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek.
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)index.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt INDEX 3
+.Os
+.Sh NAME
+.Nm index
+.Nd locate character in string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft char *
+.Fn index "const char *s" "int c"
+.Sh DESCRIPTION
+The
+.Fn index
+function
+locates the first character matching
+.Fa c
+(converted to a
+.Em char )
+in the null-terminated string
+.Fa s .
+.Sh RETURN VALUES
+A pointer to the character is returned if it is found; otherwise
+.Dv NULL
+is returned.
+If
+.Fa c
+is '\e0',
+.Fn index
+locates the terminating '\e0'.
+.Sh SEE ALSO
+.Xr memchr 3 ,
+.Xr rindex 3 ,
+.Xr strchr 3 ,
+.Xr strcspn 3 ,
+.Xr strpbrk 3 ,
+.Xr strrchr 3 ,
+.Xr strsep 3 ,
+.Xr strspn 3 ,
+.Xr strstr 3 ,
+.Xr strtok 3
+.Sh HISTORY
+A
+.Fn index
+function appeared in 
+.At v6 .
diff --git a/lib/libc/string/index.c b/lib/libc/string/index.c
new file mode 100644
index 0000000..37e505f
--- /dev/null
+++ b/lib/libc/string/index.c
@@ -0,0 +1,57 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)index.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <string.h>
+#include <stddef.h>
+
+char *
+#ifdef STRCHR
+strchr(p, ch)
+#else
+index(p, ch)
+#endif
+	register const char *p, ch;
+{
+	for (;; ++p) {
+		if (*p == ch)
+			return((char *)p);
+		if (!*p)
+			return((char *)NULL);
+	}
+	/* NOTREACHED */
+}
diff --git a/lib/libc/string/memccpy.3 b/lib/libc/string/memccpy.3
new file mode 100644
index 0000000..28d6441
--- /dev/null
+++ b/lib/libc/string/memccpy.3
@@ -0,0 +1,72 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)memccpy.3	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt MEMCCPY 3
+.Os
+.Sh NAME
+.Nm memccpy
+.Nd copy string until character found
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft void *
+.Fn memccpy "void *dst" "const void *src" "int c" "size_t len"
+.Sh DESCRIPTION
+The
+.Fn memccpy
+function
+copies bytes from string
+.Fa src
+to string
+.Fa dst .
+If the character
+.Fa c
+(as converted to an unsigned char) occurs in the string
+.Fa src ,
+the copy stops and a pointer to the byte after the copy of
+.Fa c
+in the string
+.Fa dst
+is returned.
+Otherwise,
+.Fa len
+bytes are copied, and a NULL pointer is returned.
+.Sh SEE ALSO
+.Xr bcopy 3 ,
+.Xr memcpy 3 ,
+.Xr memmove 3 ,
+.Xr strcpy 3
+.Sh HISTORY
+The
+.Fn memccpy
+function first appeared in 4.4BSD.
diff --git a/lib/libc/string/memccpy.c b/lib/libc/string/memccpy.c
new file mode 100644
index 0000000..c457110
--- /dev/null
+++ b/lib/libc/string/memccpy.c
@@ -0,0 +1,59 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)memccpy.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <string.h>
+
+void *
+memccpy(t, f, c, n)
+	void *t;
+	const void *f;
+	int c;
+	register size_t n;
+{
+
+	if (n) {
+		register unsigned char *tp = t;
+		register const unsigned char *fp = f;
+		register unsigned char uc = c;
+		do {
+			if ((*tp++ = *fp++) == uc)
+				return (tp);
+		} while (--n != 0);
+	}
+	return (0);
+}
diff --git a/lib/libc/string/memchr.3 b/lib/libc/string/memchr.3
new file mode 100644
index 0000000..c94b086
--- /dev/null
+++ b/lib/libc/string/memchr.3
@@ -0,0 +1,81 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)memchr.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt MEMCHR 3
+.Os
+.Sh NAME
+.Nm memchr
+.Nd locate byte in byte string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft void *
+.Fn memchr "const void *b" "int c" "size_t len"
+.Sh DESCRIPTION
+The
+.Fn memchr
+function
+locates the first occurrence of
+.Fa c
+(converted to an unsigned char)
+in string
+.Fa b .
+.Sh RETURN VALUES
+The
+.Fn memchr
+function
+returns a pointer to the byte located,
+or NULL if no such byte exists within
+.Fa len
+bytes.
+.Sh SEE ALSO
+.Xr index 3 ,
+.Xr rindex 3 ,
+.Xr strchr 3 ,
+.Xr strcspn 3 ,
+.Xr strpbrk 3 ,
+.Xr strrchr 3 ,
+.Xr strsep 3 ,
+.Xr strspn 3 ,
+.Xr strstr 3 ,
+.Xr strtok 3
+.Sh STANDARDS
+The
+.Fn memchr
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/string/memchr.c b/lib/libc/string/memchr.c
new file mode 100644
index 0000000..7200894
--- /dev/null
+++ b/lib/libc/string/memchr.c
@@ -0,0 +1,59 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)memchr.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <string.h>
+
+void *
+memchr(s, c, n)
+	const void *s;
+	register unsigned char c;
+	register size_t n;
+{
+	if (n != 0) {
+		register const unsigned char *p = s;
+
+		do {
+			if (*p++ == c)
+				return ((void *)(p - 1));
+		} while (--n != 0);
+	}
+	return (NULL);
+}
diff --git a/lib/libc/string/memcmp.3 b/lib/libc/string/memcmp.3
new file mode 100644
index 0000000..a859529
--- /dev/null
+++ b/lib/libc/string/memcmp.3
@@ -0,0 +1,82 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)memcmp.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt MEMCMP 3
+.Os
+.Sh NAME
+.Nm memcmp
+.Nd compare byte string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft int
+.Fn memcmp "const void *b1" "const void *b2" "size_t len"
+.Sh DESCRIPTION
+The
+.Fn memcmp
+function
+compares byte string
+.Fa b1
+against byte string
+.Fa b2 .
+Both strings are assumed to be
+.Fa len
+bytes long.
+.Sh RETURN VALUES
+The
+.Fn memcmp
+function
+returns zero if the the two strings are identical,
+otherwise returns the difference between the first two differing bytes
+(treated as unsigned char values, so that
+.Sq Li \e200
+is greater than
+.Sq Li \&\e0 ,
+for example).
+Zero-length strings are always identical.
+.Sh SEE ALSO
+.Xr bcmp 3 ,
+.Xr strcasecmp 3 ,
+.Xr strcmp 3 ,
+.Xr strcoll 3 ,
+.Xr strxfrm 3
+.Sh STANDARDS
+The
+.Fn memcmp
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/string/memcmp.c b/lib/libc/string/memcmp.c
new file mode 100644
index 0000000..d025d89
--- /dev/null
+++ b/lib/libc/string/memcmp.c
@@ -0,0 +1,61 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)memcmp.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <string.h>
+
+/*
+ * Compare memory regions.
+ */
+int
+memcmp(s1, s2, n)
+	const void *s1, *s2;
+	size_t n;
+{
+	if (n != 0) {
+		register const unsigned char *p1 = s1, *p2 = s2;
+
+		do {
+			if (*p1++ != *p2++)
+				return (*--p1 - *--p2);
+		} while (--n != 0);
+	}
+	return (0);
+}
diff --git a/lib/libc/string/memcpy.3 b/lib/libc/string/memcpy.3
new file mode 100644
index 0000000..61b6768
--- /dev/null
+++ b/lib/libc/string/memcpy.3
@@ -0,0 +1,83 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)memcpy.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt MEMCPY 3
+.Os
+.Sh NAME
+.Nm memcpy
+.Nd copy byte string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft void *
+.Fn memcpy "void *dst" "const void *src" "size_t len"
+.Sh DESCRIPTION
+The
+.Fn memcpy
+function
+copies
+.Fa len
+bytes from string
+.Fa src
+to string
+.Fa dst .
+.Sh RETURN VALUES
+The
+.Fn memcpy
+function
+returns the original value of
+.Fa dst .
+.Sh SEE ALSO
+.Xr bcopy 3 ,
+.Xr memccpy 3 ,
+.Xr memmove 3 ,
+.Xr strcpy 3
+.Sh STANDARDS
+The
+.Fn memcpy
+function
+conforms to
+.St -ansiC .
+.Sh BUGS
+In this implementation
+.Fn memcpy
+is implemented using
+.Xr bcopy 3 ,
+and therefore the strings may overlap.
+On other systems, copying overlapping strings may produce surprises.
+A simpler solution is to not use
+.Fn memcpy .
diff --git a/lib/libc/string/memmove.3 b/lib/libc/string/memmove.3
new file mode 100644
index 0000000..54c2b9b
--- /dev/null
+++ b/lib/libc/string/memmove.3
@@ -0,0 +1,75 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)memmove.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt MEMMOVE 3
+.Os
+.Sh NAME
+.Nm memmove
+.Nd copy byte string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft void *
+.Fn memmove "void *dst" "const void *src" "size_t len"
+.Sh DESCRIPTION
+The
+.Fn memmove
+function
+copies
+.Fa len
+bytes from string
+.Fa src
+to string
+.Fa dst .
+The two strings may overlap;
+the copy is always done in a non-destructive manner.
+.Sh RETURN VALUES
+The
+.Fn memmove
+function returns the original value of
+.Fa dst .
+.Sh SEE ALSO
+.Xr bcopy 3 ,
+.Xr memccpy 3 ,
+.Xr memcpy 3 ,
+.Xr strcpy 3
+.Sh STANDARDS
+The
+.Fn memmove
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/string/memset.3 b/lib/libc/string/memset.3
new file mode 100644
index 0000000..98e6d5f
--- /dev/null
+++ b/lib/libc/string/memset.3
@@ -0,0 +1,70 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)memset.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt MEMSET 3
+.Os
+.Sh NAME
+.Nm memset
+.Nd write a byte to byte string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft void *
+.Fn memset "void *b" "int c" "size_t len"
+.Sh DESCRIPTION
+The
+.Fn memset
+function
+writes
+.Fa len
+bytes of value
+.Fa c
+(converted to an unsigned char) to the string
+.Fa b .
+.Sh RETURNS
+The
+.Fn memset
+function returns its first argument.
+.Sh SEE ALSO
+.Xr bzero 3 ,
+.Xr swab 3
+.Sh STANDARDS
+The
+.Fn memset
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/string/memset.c b/lib/libc/string/memset.c
new file mode 100644
index 0000000..99c72dc
--- /dev/null
+++ b/lib/libc/string/memset.c
@@ -0,0 +1,130 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Hibler and Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)memset.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <limits.h>
+#include <string.h>
+
+#define	wsize	sizeof(u_int)
+#define	wmask	(wsize - 1)
+
+#ifdef BZERO
+#define	RETURN	return
+#define	VAL	0
+#define	WIDEVAL	0
+
+void
+bzero(dst0, length)
+	void *dst0;
+	register size_t length;
+#else
+#define	RETURN	return (dst0)
+#define	VAL	c0
+#define	WIDEVAL	c
+
+void *
+memset(dst0, c0, length)
+	void *dst0;
+	register int c0;
+	register size_t length;
+#endif
+{
+	register size_t t;
+	register u_int c;
+	register u_char *dst;
+
+	dst = dst0;
+	/*
+	 * If not enough words, just fill bytes.  A length >= 2 words
+	 * guarantees that at least one of them is `complete' after
+	 * any necessary alignment.  For instance:
+	 *
+	 *	|-----------|-----------|-----------|
+	 *	|00|01|02|03|04|05|06|07|08|09|0A|00|
+	 *	          ^---------------------^
+	 *		 dst		 dst+length-1
+	 *
+	 * but we use a minimum of 3 here since the overhead of the code
+	 * to do word writes is substantial.
+	 */
+	if (length < 3 * wsize) {
+		while (length != 0) {
+			*dst++ = VAL;
+			--length;
+		}
+		RETURN;
+	}
+
+#ifndef BZERO
+	if ((c = (u_char)c0) != 0) {	/* Fill the word. */
+		c = (c << 8) | c;	/* u_int is 16 bits. */
+#if UINT_MAX > 0xffff
+		c = (c << 16) | c;	/* u_int is 32 bits. */
+#endif
+#if UINT_MAX > 0xffffffff
+		c = (c << 32) | c;	/* u_int is 64 bits. */
+#endif
+	}
+#endif
+	/* Align destination by filling in bytes. */
+	if ((t = (int)dst & wmask) != 0) {
+		t = wsize - t;
+		length -= t;
+		do {
+			*dst++ = VAL;
+		} while (--t != 0);
+	}
+
+	/* Fill words.  Length was >= 2*words so we know t >= 1 here. */
+	t = length / wsize;
+	do {
+		*(u_int *)dst = WIDEVAL;
+		dst += wsize;
+	} while (--t != 0);
+
+	/* Mop up trailing bytes, if any. */
+	t = length & wmask;
+	if (t != 0)
+		do {
+			*dst++ = VAL;
+		} while (--t != 0);
+	RETURN;
+}
diff --git a/lib/libc/string/rindex.3 b/lib/libc/string/rindex.3
new file mode 100644
index 0000000..78d3294
--- /dev/null
+++ b/lib/libc/string/rindex.3
@@ -0,0 +1,82 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek.
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)rindex.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt RINDEX 3
+.Os
+.Sh NAME
+.Nm rindex
+.Nd locate character in string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft char *
+.Fn rindex "const char *s" "int c"
+.Sh DESCRIPTION
+The
+.Fn rindex
+function
+locates the last character
+matching
+.Fa c
+(converted to a
+.Em char )
+in the null-terminated string
+.Fa s .
+.Sh RETURN VALUES
+A pointer to the character is returned if it is found; otherwise
+NULL is returned.
+If
+.Fa c
+is
+.Ql \e0 ,
+.Fn rindex
+locates the terminating
+.Ql \e0 .
+.Sh SEE ALSO
+.Xr index 3 ,
+.Xr memchr 3 ,
+.Xr strchr 3 ,
+.Xr strcspn 3 ,
+.Xr strpbrk 3 ,
+.Xr strrchr 3 ,
+.Xr strsep 3 ,
+.Xr strspn 3 ,
+.Xr strstr 3 ,
+.Xr strtok 3
+.Sh HISTORY
+A
+.Fn rindex
+function appeared in 
+.At v6 .
diff --git a/lib/libc/string/rindex.c b/lib/libc/string/rindex.c
new file mode 100644
index 0000000..69dced4
--- /dev/null
+++ b/lib/libc/string/rindex.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rindex.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stddef.h>
+#include <string.h>
+
+char *
+#ifdef STRRCHR
+strrchr(p, ch)
+#else
+rindex(p, ch)
+#endif
+	register const char *p;
+	register int ch;
+{
+	register char *save;
+
+	for (save = NULL;; ++p) {
+		if (*p == ch)
+			save = (char *)p;
+		if (!*p)
+			return(save);
+	}
+	/* NOTREACHED */
+}
diff --git a/lib/libc/string/strcasecmp.3 b/lib/libc/string/strcasecmp.3
new file mode 100644
index 0000000..f9d27ff
--- /dev/null
+++ b/lib/libc/string/strcasecmp.3
@@ -0,0 +1,86 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek.
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strcasecmp.3	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt STRCASECMP 3
+.Os
+.Sh NAME
+.Nm strcasecmp
+.Nd compare strings, ignoring case
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft int
+.Fn strcasecmp "const char *s1" "const char *s2"
+.Ft int
+.Fn strncasecmp "const char *s1" "const char *s2" "size_t len"
+.Sh DESCRIPTION
+The
+.Fn strcasecmp
+and
+.Fn strncasecmp
+functions
+compare the null-terminated strings
+.Fa s1
+and
+.Fa s2
+and return an integer greater than, equal to, or less than 0,
+according as
+.Fa s1
+is lexicographically greater than, equal to, or less than
+.Fa s2
+after translation of each corresponding character to lower-case.
+The strings themselves are not modified.
+The comparison is done using unsigned characters, so that
+.Sq Li \e200
+is greater than
+.Ql \e0 .
+.Pp
+The
+.Fn strncasecmp
+compares at most
+.Fa len
+characters.
+.Sh SEE ALSO
+.Xr bcmp 3 ,
+.Xr memcmp 3 ,
+.Xr strcmp 3 ,
+.Xr strcoll 3 ,
+.Xr strxfrm 3
+.Sh HISTORY
+The
+.Fn strcasecmp
+and
+.Fn strncasecmp
+functions first appeared in 4.4BSD.
diff --git a/lib/libc/string/strcasecmp.c b/lib/libc/string/strcasecmp.c
new file mode 100644
index 0000000..f31c297
--- /dev/null
+++ b/lib/libc/string/strcasecmp.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 1987, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+#include <string.h>
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strcasecmp.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+typedef unsigned char u_char;
+
+/*
+ * This array is designed for mapping upper and lower case letter
+ * together for a case independent comparison.  The mappings are
+ * based upon ascii character sequences.
+ */
+static const u_char charmap[] = {
+	'\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
+	'\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
+	'\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
+	'\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
+	'\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
+	'\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
+	'\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
+	'\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
+	'\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
+	'\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
+	'\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
+	'\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
+	'\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
+	'\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
+	'\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
+	'\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
+	'\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
+	'\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
+	'\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
+	'\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
+	'\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
+	'\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
+	'\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
+	'\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
+	'\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
+	'\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
+	'\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327',
+	'\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337',
+	'\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
+	'\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
+	'\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
+	'\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
+};
+
+int
+strcasecmp(s1, s2)
+	const char *s1, *s2;
+{
+	register const u_char *cm = charmap,
+			*us1 = (const u_char *)s1,
+			*us2 = (const u_char *)s2;
+
+	while (cm[*us1] == cm[*us2++])
+		if (*us1++ == '\0')
+			return (0);
+	return (cm[*us1] - cm[*--us2]);
+}
+
+int
+strncasecmp(s1, s2, n)
+	const char *s1, *s2;
+	register size_t n;
+{
+	if (n != 0) {
+		register const u_char *cm = charmap,
+				*us1 = (const u_char *)s1,
+				*us2 = (const u_char *)s2;
+
+		do {
+			if (cm[*us1] != cm[*us2++])
+				return (cm[*us1] - cm[*--us2]);
+			if (*us1++ == '\0')
+				break;
+		} while (--n != 0);
+	}
+	return (0);
+}
diff --git a/lib/libc/string/strcat.3 b/lib/libc/string/strcat.3
new file mode 100644
index 0000000..6fe13aa
--- /dev/null
+++ b/lib/libc/string/strcat.3
@@ -0,0 +1,93 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strcat.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt STRCAT 3
+.Os
+.Sh NAME
+.Nm strcat
+.Nd concatenate strings
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft char *
+.Fn strcat "char *s" "const char *append"
+.Ft char *
+.Fn strncat "char *s" "const char *append" "size_t count"
+.Sh DESCRIPTION
+The
+.Fn strcat
+and
+.Fn strncat
+functions
+append a copy of the null-terminated string
+.Fa append
+to the end of the null-terminated string
+.Fa s ,
+then add a terminating
+.Ql \e0 .
+The string
+.Fa s
+must have sufficient space to hold the result.
+.Pp
+The
+.Fn strncat
+function
+appends not more than
+.Fa count
+characters.
+.Sh RETURN VALUES
+The
+.Fn strcat
+and
+.Fn strncat
+functions
+return the pointer
+.Fa s .
+.Sh SEE ALSO
+.Xr bcopy 3 ,
+.Xr memccpy 3 ,
+.Xr memcpy 3 ,
+.Xr memmove 3 ,
+.Xr strcpy 3
+.Sh STANDARDS
+The
+.Fn strcat
+and
+.Fn strncat
+functions
+conform to
+.St -ansiC .
diff --git a/lib/libc/string/strcat.c b/lib/libc/string/strcat.c
new file mode 100644
index 0000000..3436967
--- /dev/null
+++ b/lib/libc/string/strcat.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strcat.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <string.h>
+
+char *
+strcat(s, append)
+	register char *s;
+	register const char *append;
+{
+	char *save = s;
+
+	for (; *s; ++s);
+	while (*s++ = *append++);
+	return(save);
+}
diff --git a/lib/libc/string/strchr.3 b/lib/libc/string/strchr.3
new file mode 100644
index 0000000..d2676ba
--- /dev/null
+++ b/lib/libc/string/strchr.3
@@ -0,0 +1,87 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strchr.3	8.2 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt STRCHR 3
+.Os
+.Sh NAME
+.Nm strchr
+.Nd locate character in string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft char *
+.Fn strchr "const char *s" "int c"
+.Sh DESCRIPTION
+The
+.Fn strchr
+function locates the first occurrence of
+.Ar c
+in the string pointed to by
+.Ar s .
+The terminating
+.Dv NULL
+character is considered part of the string.
+If
+.Fa c
+is
+.Ql \e0 ,
+.Fn strchr
+locates the terminating
+.Ql \e0 .
+.Sh RETURN VALUES
+The function
+.Fn strchr
+returns a pointer to the located character, or
+.Dv NULL
+if the character does not appear in the string.
+.Sh SEE ALSO
+.Xr index 3 ,
+.Xr memchr 3 ,
+.Xr rindex 3 ,
+.Xr strcspn 3 ,
+.Xr strpbrk 3 ,
+.Xr strrchr 3 ,
+.Xr strsep 3 ,
+.Xr strspn 3 ,
+.Xr strstr 3 ,
+.Xr strtok 3
+.Sh STANDARDS
+The
+.Fn strchr
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/string/strcmp.3 b/lib/libc/string/strcmp.3
new file mode 100644
index 0000000..49e5f14
--- /dev/null
+++ b/lib/libc/string/strcmp.3
@@ -0,0 +1,93 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strcmp.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt STRCMP 3
+.Os
+.Sh NAME
+.Nm strcmp
+.Nd compare strings
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft int
+.Fn strcmp "const char *s1" "const char *s2"
+.Ft int
+.Fn strncmp "const char *s1" "const char *s2" "size_t len"
+.Sh DESCRIPTION
+The
+.Fn strcmp
+and
+.Fn strncmp
+functions
+lexicographically compare the null-terminated strings
+.Fa s1
+and
+.Fa s2 .
+.Sh RETURN VALUES
+The
+.Fn strcmp
+and
+.Fn strncmp
+return an integer greater than, equal to, or less than 0, according
+as the string
+.Fa s1
+is greater than, equal to, or less than the string
+.Fa s2 .
+The comparison is done using unsigned characters, so that
+.Ql \e200
+is greater than
+.Ql \e0 .
+.Pp
+The
+.Fn strncmp
+compares not more than
+.Fa len
+characters.
+.Sh SEE ALSO
+.Xr bcmp 3 ,
+.Xr memcmp 3 ,
+.Xr strcasecmp 3 ,
+.Xr strcoll 3 ,
+.Xr strxfrm 3
+.Sh STANDARDS
+The
+.Fn strcmp
+and
+.Fn strncmp
+functions
+conform to
+.St -ansiC .
diff --git a/lib/libc/string/strcmp.c b/lib/libc/string/strcmp.c
new file mode 100644
index 0000000..79cfaa8
--- /dev/null
+++ b/lib/libc/string/strcmp.c
@@ -0,0 +1,55 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strcmp.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <string.h>
+
+/*
+ * Compare strings.
+ */
+int
+strcmp(s1, s2)
+	register const char *s1, *s2;
+{
+	while (*s1 == *s2++)
+		if (*s1++ == 0)
+			return (0);
+	return (*(unsigned char *)s1 - *(unsigned char *)--s2);
+}
diff --git a/lib/libc/string/strcoll.3 b/lib/libc/string/strcoll.3
new file mode 100644
index 0000000..180434f
--- /dev/null
+++ b/lib/libc/string/strcoll.3
@@ -0,0 +1,72 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strcoll.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt STRCOLL 3
+.Os
+.Sh NAME
+.Nm strcoll
+.Nd compare strings according to current collation
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft int
+.Fn strcoll "const char *s1" "const char *s2"
+.Sh DESCRIPTION
+The
+.Fn strcoll
+function
+lexicographically compares the null-terminated strings
+.Fa s1
+and
+.Fa s2
+according to the current locale collation if any, otherwith call
+.Fa strcmp ,
+and returns an integer greater than, equal to, or less than 0,
+according as
+.Fa s1
+is greater than, equal to, or less than
+.Fa s2 .
+.Sh SEE ALSO
+.Xr setlocale 3 ,
+.Xr strcmp 3 ,
+.Xr strxfrm 3
+.Sh STANDARDS
+The
+.Fn strcoll
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/string/strcoll.c b/lib/libc/string/strcoll.c
new file mode 100644
index 0000000..915e649
--- /dev/null
+++ b/lib/libc/string/strcoll.c
@@ -0,0 +1,78 @@
+/*-
+ * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
+ *		at Electronni Visti IA, Kiev, Ukraine.
+ *			All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: strcoll.c,v 1.3 1995/02/18 01:38:58 ache Exp $
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include "collate.h"
+
+int
+strcoll(s, s2)
+	const char *s, *s2;
+{
+	int len, len2, prim, prim2, sec, sec2, ret, ret2;
+	char *tt, *t, *tt2, *t2;
+
+	if (__collate_load_error)
+		return strcasecmp(s, s2);
+
+	len = len2 = 1;
+	ret = ret2 = 0;
+	tt = t = __collate_substitute(s);
+	tt2 = t2 = __collate_substitute(s2);
+	while(*t && *t2) {
+		prim = prim2 = 0;
+		while(*t && !prim) {
+			__collate_lookup(t, &len, &prim, &sec);
+			t += len;
+		}
+		while(*t2 && !prim2) {
+			__collate_lookup(t2, &len2, &prim2, &sec2);
+			t2 += len2;
+		}
+		if(!prim || !prim2)
+			break;
+		if(prim != prim2) {
+			ret = prim - prim2;
+			goto end;
+		}
+		if(!ret2)
+			ret2 = sec - sec2;
+	}
+	if(!*t && *t2)
+		ret = -(int)((u_char)*t2);
+	else if(*t && !*t2)
+		ret = (u_char)*t;
+	else if(!*t && !*t2)
+		ret = ret2;
+  end:
+	free(tt);
+	free(tt2);
+
+	return ret;
+}
diff --git a/lib/libc/string/strcpy.3 b/lib/libc/string/strcpy.3
new file mode 100644
index 0000000..1e6f335
--- /dev/null
+++ b/lib/libc/string/strcpy.3
@@ -0,0 +1,121 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strcpy.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt STRCPY 3
+.Os BSD 4
+.Sh NAME
+.Nm strcpy
+.Nd copy strings
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft char *
+.Fn strcpy "char *dst" "const char *src"
+.Ft char *
+.Fn strncpy "char *dst" "const char *src" "size_t len"
+.Sh DESCRIPTION
+The
+.Fn strcpy
+and
+.Fn strncpy
+functions
+copy the string
+.Fa src
+to
+.Fa dst
+(including the terminating
+.Ql \e0
+character).
+.Pp
+The
+.Fn strncpy
+copies not more than
+.Fa len
+characters into
+.Fa dst ,
+appending
+.Ql \e0
+characters if
+.Fa src
+is less than
+.Fa len
+characters long, and
+.Em not
+terminating
+.Fa dst
+if
+.Fa src
+is more than
+.Fa len
+characters long.
+.Sh RETURN VALUES
+The
+.Fn strcpy
+and
+.Fn strncpy
+functions
+return
+.Fa dst .
+.Sh EXAMPLES
+The following sets
+.Dq Li chararray
+to
+.Dq Li abc\e0\e0\e0 :
+.Bd -literal -offset indent
+(void)strncpy(chararray, "abc", 6).
+.Ed
+.Pp
+The following sets
+.Dq Li chararray
+to
+.Dq Li abcdef :
+.Bd -literal -offset indent
+(void)strncpy(chararray, "abcdefgh", 6);
+.Ed
+.Sh SEE ALSO
+.Xr bcopy 3 ,
+.Xr memccpy 3 ,
+.Xr memcpy 3 ,
+.Xr memmove 3
+.Sh STANDARDS
+The
+.Fn strcpy
+and
+.Fn strncpy
+functions
+conform to
+.St -ansiC .
diff --git a/lib/libc/string/strcpy.c b/lib/libc/string/strcpy.c
new file mode 100644
index 0000000..d1791dd
--- /dev/null
+++ b/lib/libc/string/strcpy.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strcpy.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <string.h>
+
+char *
+strcpy(to, from)
+	register char *to;
+	register const char *from;
+{
+	char *save = to;
+
+	for (; *to = *from; ++from, ++to);
+	return(save);
+}
diff --git a/lib/libc/string/strcspn.3 b/lib/libc/string/strcspn.3
new file mode 100644
index 0000000..89d20fd
--- /dev/null
+++ b/lib/libc/string/strcspn.3
@@ -0,0 +1,84 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strcspn.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt STRCSPN 3
+.Os
+.Sh NAME
+.Nm strcspn
+.Nd span the complement of a string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft size_t
+.Fn strcspn "const char *s" "const char *charset"
+.Sh DESCRIPTION
+The
+.Fn strcspn
+function
+spans the initial part of the null-terminated string
+.Fa s
+as long as the characters from
+.Fa s
+do not occur in string
+.Fa charset
+(it
+spans the
+.Em complement
+of
+.Fa charset ) .
+.Sh RETURN VALUES
+The
+.Fn strcspn
+function
+returns the number of characters spanned.
+.Sh SEE ALSO
+.Xr index 3 ,
+.Xr memchr 3 ,
+.Xr rindex 3 ,
+.Xr strchr 3 ,
+.Xr strpbrk 3 ,
+.Xr strrchr 3 ,
+.Xr strsep 3 ,
+.Xr strspn 3 ,
+.Xr strstr 3 ,
+.Xr strtok 3
+.Sh STANDARDS
+The
+.Fn strcspn
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/string/strcspn.c b/lib/libc/string/strcspn.c
new file mode 100644
index 0000000..a1c2e1d
--- /dev/null
+++ b/lib/libc/string/strcspn.c
@@ -0,0 +1,68 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strcspn.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <string.h>
+
+/*
+ * Span the complement of string s2.
+ */
+size_t
+strcspn(s1, s2)
+	const char *s1;
+	register const char *s2;
+{
+	register const char *p, *spanp;
+	register char c, sc;
+
+	/*
+	 * Stop as soon as we find any character from s2.  Note that there
+	 * must be a NUL in s2; it suffices to stop when we find that, too.
+	 */
+	for (p = s1;;) {
+		c = *p++;
+		spanp = s2;
+		do {
+			if ((sc = *spanp++) == c)
+				return (p - 1 - s1);
+		} while (sc != 0);
+	}
+	/* NOTREACHED */
+}
diff --git a/lib/libc/string/strdup.3 b/lib/libc/string/strdup.3
new file mode 100644
index 0000000..2f1d5d2
--- /dev/null
+++ b/lib/libc/string/strdup.3
@@ -0,0 +1,63 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strdup.3	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt STRDUP 3
+.Os
+.Sh NAME
+.Nm strdup
+.Nd save a copy of a string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft char *
+.Fn strdup "const char *str"
+.Sh DESCRIPTION
+The
+.Fn strdup
+function
+allocates sufficient memory for a copy
+of the string
+.Fa str ,
+does the copy, and returns a pointer to it.
+The pointer may subsequently be used as an
+argument to the function
+.Xr free 3 .
+.Pp
+If insufficient memory is available, NULL is returned.
+.Sh SEE ALSO
+.Xr malloc 3
+.Xr free 3
+.Sh HISTORY
+The
+.Fn strdup
+function first appeared in 4.4BSD.
diff --git a/lib/libc/string/strdup.c b/lib/libc/string/strdup.c
new file mode 100644
index 0000000..a1c2eed
--- /dev/null
+++ b/lib/libc/string/strdup.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strdup.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+char *
+strdup(str)
+	const char *str;
+{
+	size_t len;
+	char *copy;
+
+	len = strlen(str) + 1;
+	if ((copy = malloc(len)) == NULL)
+		return (NULL);
+	memcpy(copy, str, len);
+	return (copy);
+}
diff --git a/lib/libc/string/strerror.3 b/lib/libc/string/strerror.3
new file mode 100644
index 0000000..784c061
--- /dev/null
+++ b/lib/libc/string/strerror.3
@@ -0,0 +1,124 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strerror.3	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt STRERROR 3
+.Os BSD 4
+.Sh NAME
+.Nm perror ,
+.Nm strerror ,
+.Nm sys_errlist ,
+.Nm sys_nerr
+.Nd system error messages
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft void
+.Fn perror "const char *string"
+.Vt extern char *sys_errlist[];
+.Vt extern int sys_nerr;
+.Fd #include <string.h>
+.Ft char *
+.Fn strerror "int errnum"
+.Sh DESCRIPTION
+The
+.Fn strerror
+and
+.Fn perror
+functions look up the error message string corresponding to an
+error number.
+.Pp
+The
+.Fn strerror
+function accepts an error number argument
+.Fa errnum
+and
+returns a pointer to the corresponding
+message string.
+.Pp
+The
+.Fn perror
+function finds the error message corresponding to the current
+value of the global variable
+.Va errno
+.Pq Xr intro 2
+and writes it, followed by a newline, to the
+standard error file descriptor.
+If the argument
+.Fa string
+is
+.Pf non- Dv NULL ,
+it is prepended to the message
+string and separated from it by
+a colon and space
+.Pq Ql \&:\ \& .
+If
+.Fa string
+is
+.Dv NULL ,
+only the error message string is printed.
+.Pp
+If
+.Fa errnum
+is not a recognized error number,
+the error message string will contain
+.Dq Li "Unknown error:\0
+followed by the error number in decimal.
+.Pp
+The message strings can be accessed directly using the external
+array
+.Fa sys_errlist .
+The external value
+.Fa sys_nerr
+contains a count of the messages in
+.Fa sys_errlist .
+The use of these variables is deprecated;
+.Fn strerror
+should be used instead.
+.Sh SEE ALSO
+.Xr intro 2 ,
+.Xr psignal 3
+.Sh HISTORY
+The
+.Fn strerror
+and
+.Fn perror
+functions first appeared in 4.4BSD.
+.Sh BUGS
+For unknown error numbers, the
+.Fn strerror
+function will return its result in a static buffer which
+may be overwritten by subsequent calls.
diff --git a/lib/libc/string/strerror.c b/lib/libc/string/strerror.c
new file mode 100644
index 0000000..5acefd9
--- /dev/null
+++ b/lib/libc/string/strerror.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strerror.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <string.h>
+
+char *
+strerror(num)
+	int num;
+{
+#define	UPREFIX	"Unknown error: "
+	static char ebuf[40] = UPREFIX;		/* 64-bit number + slop */
+	register unsigned int errnum;
+	register char *p, *t;
+	char tmp[40];
+
+	errnum = num;				/* convert to unsigned */
+	if (errnum < sys_nerr)
+		return ((char *)sys_errlist[errnum]);
+
+	/* Do this by hand, so we don't link to stdio(3). */
+	t = tmp;
+	if (num < 0)
+		errnum = -errnum;
+	do {
+		*t++ = "0123456789"[errnum % 10];
+	} while (errnum /= 10);
+	if (num < 0)
+		*t++ = '-';
+	for (p = ebuf + sizeof(UPREFIX) - 1;;) {
+		*p++ = *--t;
+		if (t <= tmp)
+			break;
+	}
+	*p = '\0';
+	return (ebuf);
+}
diff --git a/lib/libc/string/string.3 b/lib/libc/string/string.3
new file mode 100644
index 0000000..c257d94
--- /dev/null
+++ b/lib/libc/string/string.3
@@ -0,0 +1,155 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek.
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)string.3	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt STRING 3
+.Os BSD 4
+.Sh NAME
+.Nm strcat ,
+.Nm strncat ,
+.Nm strchr ,
+.Nm strrchr ,
+.Nm strcmp ,
+.Nm strncmp ,
+.Nm strcasecmp,
+.Nm strncasecmp ,
+.Nm strcpy ,
+.Nm strncpy ,
+.Nm strerror ,
+.Nm strlen ,
+.Nm strpbrk ,
+.Nm strsep,
+.Nm strspn ,
+.Nm strcspn ,
+.Nm strstr ,
+.Nm strtok ,
+.Nm index ,
+.Nm rindex
+.Nd string specific functions
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft char *
+.Fn strcat "char *s" "const char * append"
+.Ft char *
+.Fn strncat "char *s" "const char *append" "size_t count"
+.Ft char *
+.Fn strchr "const char *s" "int c"
+.Ft char *
+.Fn strrchr "const char *s" "int c"
+.Ft int
+.Fn strcmp "const char *s1" "const char *s2"
+.Ft int
+.Fn strncmp "const char *s1" "const char *s2" "size_t count"
+.Ft int
+.Fn strcasecmp "const char *s1" "const char *s2"
+.Ft int
+.Fn strncasecmp "const char *s1" "const char *s2" "size_t count"
+.Ft char *
+.Fn strcpy "char *dst" "const char *src"
+.Ft char *
+.Fn strncpy "char *dst" "const char *src" "size_t count"
+.Ft char *
+.Fn strerror "int errno"
+.Ft size_t
+.Fn strlen "const char *s"
+.Ft char *
+.Fn strpbrk "const char *s" "const char *charset"
+.Ft char *
+.Fn strsep "char **stringp" "const char *delim"
+.Ft size_t
+.Fn strspn "const char *s" "const char *charset"
+.Ft size_t
+.Fn strcspn "const char *s" "const char *charset"
+.Ft char *
+.Fn strstr "const char *big" "const char *little"
+.Ft char *
+.Fn strtok "char *s" "const char *delim"
+.Ft char *
+.Fn index "const char *s" "int c"
+.Ft char *
+.Fn rindex "const char *s" "int c"
+.Sh DESCRIPTION
+The string
+functions manipulate strings terminated by a
+null byte.
+.Pp
+See the specific manual pages for more information.
+For manipulating variable length generic objects as byte
+strings (without the null byte check), see
+.Xr bstring 3 .
+.Pp
+Except as noted in their specific manual pages,
+the string functions do not test the destination
+for size limitations.
+.Sh SEE ALSO
+.Xr index 3 ,
+.Xr strcat 3 ,
+.Xr strchr 3 ,
+.Xr strrchr 3 ,
+.Xr strcmp 3 ,
+.Xr strcasecmp 3 ,
+.Xr strcpy 3 ,
+.Xr strerror 3 ,
+.Xr strlen 3 ,
+.Xr strpbrk 3 ,
+.Xr strsep 3 ,
+.Xr strspn 3 ,
+.Xr strcspn 3 ,
+.Xr strstr 3 ,
+.Xr strtok 3 ,
+.Xr rindex 3
+.Xr bstring 3
+.Sh STANDARDS
+The
+.Fn strcat ,
+.Fn strncat ,
+.Fn strchr ,
+.Fn strrchr ,
+.Fn strcmp ,
+.Fn strncmp ,
+.Fn strcpy ,
+.Fn strncpy ,
+.Fn strerror ,
+.Fn strlen ,
+.Fn strpbrk ,
+.Fn strsep ,
+.Fn strspn ,
+.Fn strcspn ,
+.Fn strstr ,
+and
+.Fn strtok
+functions
+conform to
+.St -ansiC .
diff --git a/lib/libc/string/strlen.3 b/lib/libc/string/strlen.3
new file mode 100644
index 0000000..04cb48e
--- /dev/null
+++ b/lib/libc/string/strlen.3
@@ -0,0 +1,70 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strlen.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt STRLEN 3
+.Os
+.Sh NAME
+.Nm strlen
+.Nd find length of string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft size_t
+.Fn strlen "const char *s"
+.Sh DESCRIPTION
+The
+.Fn strlen
+function
+computes the length of the string
+.Fa s .
+.Sh RETURN VALUES
+The
+.Fn strlen
+function
+returns
+the number of characters that precede the
+terminating
+.Dv NUL
+character.
+.Sh SEE ALSO
+.Xr string 3
+.Sh STANDARDS
+The
+.Fn strlen
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/string/strlen.c b/lib/libc/string/strlen.c
new file mode 100644
index 0000000..323fbe4
--- /dev/null
+++ b/lib/libc/string/strlen.c
@@ -0,0 +1,50 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strlen.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <string.h>
+
+size_t
+strlen(str)
+	const char *str;
+{
+	register const char *s;
+
+	for (s = str; *s; ++s);
+	return(s - str);
+}
+
diff --git a/lib/libc/string/strmode.3 b/lib/libc/string/strmode.3
new file mode 100644
index 0000000..0cedd55
--- /dev/null
+++ b/lib/libc/string/strmode.3
@@ -0,0 +1,147 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strmode.3	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt STRMODE 3
+.Os
+.Sh NAME
+.Nm strmode
+.Nd convert inode status information into a symbolic string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft void
+.Fn strmode "mode_t mode" "char *bp"
+.Sh DESCRIPTION
+The
+.Fn strmode
+function
+converts a file
+.Fa mode
+(the type and permission information associated with an inode, see
+.Xr stat 2 )
+into a symbolic string which is stored in the location referenced by
+.Fa bp .
+This stored string is eleven characters in length plus a trailing
+.Dv NULL .
+.Pp
+The first character is the inode type, and will be one of the following:
+.Pp
+.Bl -tag -width flag -offset indent -compact
+.It \-
+regular file
+.It b
+block special
+.It c
+character special
+.It d
+directory
+.It l
+symbolic link
+.It p
+fifo
+.It s
+socket
+.It ?
+unknown inode type
+.El
+.Pp
+The next nine characters encode three sets of permissions, in three
+characters each.
+The first three characters are the permissions for the owner of the
+file, the second three for the group the file belongs to, and the
+third for the ``other'', or default, set of users.
+.Pp
+Permission checking is done as specifically as possible.
+If read permission is denied to the owner of a file in the first set
+of permissions, the owner of the file will not be able to read the file.
+This is true even if the owner is in the file's group and the group
+permissions allow reading or the ``other'' permissions allow reading.
+.Pp
+If the first character of the three character set is an ``r'', the file is
+readable for that set of users; if a dash ``\-'', it is not readable.
+.Pp
+If the second character of the three character set is a ``w'', the file is
+writable for that set of users; if a dash ``\-'', it is not writable.
+.Pp
+The third character is the first of the following characters that apply:
+.Bl -tag -width xxxx
+.It S
+If the character is part of the owner permissions and the file is not
+executable or the directory is not searchable by the owner, and the
+set-user-id bit is set.
+.It S
+If the character is part of the group permissions and the file is not
+executable or the directory is not searchable by the group, and the
+set-group-id bit is set.
+.It T
+If the character is part of the other permissions and the file is not
+executable or the directory is not searchable by others, and the ``sticky''
+.Pq Dv S_ISVTX
+bit is set.
+.It s
+If the character is part of the owner permissions and the file is
+executable or the directory searchable by the owner, and the set-user-id
+bit is set.
+.It s
+If the character is part of the group permissions and the file is
+executable or the directory searchable by the group, and the set-group-id
+bit is set.
+.It t
+If the character is part of the other permissions and the file is
+executable or the directory searchable by others, and the ``sticky''
+.Pq Dv S_ISVTX
+bit is set.
+.It x
+The file is executable or the directory is searchable.
+.It \-
+None of the above apply.
+.El
+.Pp
+The last character is a plus sign ``+'' if any there are any alternate
+or additional access control methods associated with the inode, otherwise
+it will be a space.
+.Sh RETURN VALUES
+The
+.Fn strmode
+function
+always returns 0.
+.Sh SEE ALSO
+.Xr chmod 1 ,
+.Xr find 1 ,
+.Xr stat 2 ,
+.Xr getmode 3 ,
+.Xr setmode 3
+.Sh HISTORY
+The
+.Fn strmode
+function first appeared in 4.4BSD.
diff --git a/lib/libc/string/strmode.c b/lib/libc/string/strmode.c
new file mode 100644
index 0000000..651b263
--- /dev/null
+++ b/lib/libc/string/strmode.c
@@ -0,0 +1,147 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strmode.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <string.h>
+
+void
+strmode(mode, p)
+	register mode_t mode;
+	register char *p;
+{
+	 /* print type */
+	switch (mode & S_IFMT) {
+	case S_IFDIR:			/* directory */
+		*p++ = 'd';
+		break;
+	case S_IFCHR:			/* character special */
+		*p++ = 'c';
+		break;
+	case S_IFBLK:			/* block special */
+		*p++ = 'b';
+		break;
+	case S_IFREG:			/* regular */
+		*p++ = '-';
+		break;
+	case S_IFLNK:			/* symbolic link */
+		*p++ = 'l';
+		break;
+	case S_IFSOCK:			/* socket */
+		*p++ = 's';
+		break;
+#ifdef S_IFIFO
+	case S_IFIFO:			/* fifo */
+		*p++ = 'p';
+		break;
+#endif
+	default:			/* unknown */
+		*p++ = '?';
+		break;
+	}
+	/* usr */
+	if (mode & S_IRUSR)
+		*p++ = 'r';
+	else
+		*p++ = '-';
+	if (mode & S_IWUSR)
+		*p++ = 'w';
+	else
+		*p++ = '-';
+	switch (mode & (S_IXUSR | S_ISUID)) {
+	case 0:
+		*p++ = '-';
+		break;
+	case S_IXUSR:
+		*p++ = 'x';
+		break;
+	case S_ISUID:
+		*p++ = 'S';
+		break;
+	case S_IXUSR | S_ISUID:
+		*p++ = 's';
+		break;
+	}
+	/* group */
+	if (mode & S_IRGRP)
+		*p++ = 'r';
+	else
+		*p++ = '-';
+	if (mode & S_IWGRP)
+		*p++ = 'w';
+	else
+		*p++ = '-';
+	switch (mode & (S_IXGRP | S_ISGID)) {
+	case 0:
+		*p++ = '-';
+		break;
+	case S_IXGRP:
+		*p++ = 'x';
+		break;
+	case S_ISGID:
+		*p++ = 'S';
+		break;
+	case S_IXGRP | S_ISGID:
+		*p++ = 's';
+		break;
+	}
+	/* other */
+	if (mode & S_IROTH)
+		*p++ = 'r';
+	else
+		*p++ = '-';
+	if (mode & S_IWOTH)
+		*p++ = 'w';
+	else
+		*p++ = '-';
+	switch (mode & (S_IXOTH | S_ISVTX)) {
+	case 0:
+		*p++ = '-';
+		break;
+	case S_IXOTH:
+		*p++ = 'x';
+		break;
+	case S_ISVTX:
+		*p++ = 'T';
+		break;
+	case S_IXOTH | S_ISVTX:
+		*p++ = 't';
+		break;
+	}
+	*p++ = ' ';		/* will be a '+' if ACL's implemented */
+	*p = '\0';
+}
diff --git a/lib/libc/string/strncat.c b/lib/libc/string/strncat.c
new file mode 100644
index 0000000..1b82a75
--- /dev/null
+++ b/lib/libc/string/strncat.c
@@ -0,0 +1,68 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strncat.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <string.h>
+
+/*
+ * Concatenate src on the end of dst.  At most strlen(dst)+n+1 bytes
+ * are written at dst (at most n+1 bytes being appended).  Return dst.
+ */
+char *
+strncat(dst, src, n)
+	char *dst;
+	const char *src;
+	register size_t n;
+{
+	if (n != 0) {
+		register char *d = dst;
+		register const char *s = src;
+
+		while (*d != 0)
+			d++;
+		do {
+			if ((*d = *s++) == 0)
+				break;
+			d++;
+		} while (--n != 0);
+		*d = 0;
+	}
+	return (dst);
+}
diff --git a/lib/libc/string/strncmp.c b/lib/libc/string/strncmp.c
new file mode 100644
index 0000000..805b5b0
--- /dev/null
+++ b/lib/libc/string/strncmp.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strncmp.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <string.h>
+
+int
+strncmp(s1, s2, n)
+	register const char *s1, *s2;
+	register size_t n;
+{
+
+	if (n == 0)
+		return (0);
+	do {
+		if (*s1 != *s2++)
+			return (*(unsigned char *)s1 - *(unsigned char *)--s2);
+		if (*s1++ == 0)
+			break;
+	} while (--n != 0);
+	return (0);
+}
diff --git a/lib/libc/string/strncpy.c b/lib/libc/string/strncpy.c
new file mode 100644
index 0000000..9e72740
--- /dev/null
+++ b/lib/libc/string/strncpy.c
@@ -0,0 +1,68 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strncpy.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <string.h>
+
+/*
+ * Copy src to dst, truncating or null-padding to always copy n bytes.
+ * Return dst.
+ */
+char *
+strncpy(dst, src, n)
+	char *dst;
+	const char *src;
+	register size_t n;
+{
+	if (n != 0) {
+		register char *d = dst;
+		register const char *s = src;
+
+		do {
+			if ((*d++ = *s++) == 0) {
+				/* NUL pad the remaining n-1 bytes */
+				while (--n != 0)
+					*d++ = 0;
+				break;
+			}
+		} while (--n != 0);
+	}
+	return (dst);
+}
diff --git a/lib/libc/string/strpbrk.3 b/lib/libc/string/strpbrk.3
new file mode 100644
index 0000000..6b0edaf
--- /dev/null
+++ b/lib/libc/string/strpbrk.3
@@ -0,0 +1,79 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strpbrk.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt STRPBRK 3
+.Os
+.Sh NAME
+.Nm strpbrk
+.Nd locate multiple characters in string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft char *
+.Fn strpbrk "const char *s" "const char *charset"
+.Sh DESCRIPTION
+The
+.Fn strpbrk
+function
+locates in the null-terminated string
+.Fa s
+the first occurrence of any character in the string
+.Fa charset
+and returns a pointer to this character.
+If no characters from
+.Fa charset
+occur anywhere in
+.Fa s
+.Fn strpbrk
+returns NULL.
+.Sh SEE ALSO
+.Xr index 3 ,
+.Xr memchr 3 ,
+.Xr rindex 3 ,
+.Xr strchr 3 ,
+.Xr strcspn 3 ,
+.Xr strrchr 3 ,
+.Xr strsep 3 ,
+.Xr strspn 3 ,
+.Xr strstr 3 ,
+.Xr strtok 3
+.Sh STANDARDS
+The
+.Fn strpbrk
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/string/strpbrk.c b/lib/libc/string/strpbrk.c
new file mode 100644
index 0000000..119d8b7
--- /dev/null
+++ b/lib/libc/string/strpbrk.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 1985, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strpbrk.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <string.h>
+
+/*
+ * Find the first occurrence in s1 of a character in s2 (excluding NUL).
+ */
+char *
+strpbrk(s1, s2)
+	register const char *s1, *s2;
+{
+	register const char *scanp;
+	register int c, sc;
+
+	while ((c = *s1++) != 0) {
+		for (scanp = s2; (sc = *scanp++) != 0;)
+			if (sc == c)
+				return ((char *)(s1 - 1));
+	}
+	return (NULL);
+}
diff --git a/lib/libc/string/strrchr.3 b/lib/libc/string/strrchr.3
new file mode 100644
index 0000000..dd551d4
--- /dev/null
+++ b/lib/libc/string/strrchr.3
@@ -0,0 +1,90 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strrchr.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt STRRCHR 3
+.Os
+.Sh NAME
+.Nm strrchr
+.Nd locate character in string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft char *
+.Fn strrchr "const char *s" "int c"
+.Sh DESCRIPTION
+The
+.Fn strrchr
+function
+locates the last occurrence of
+.Fa c
+(converted to a char)
+in the string
+.Fa s .
+If
+.Fa c
+is
+.Ql \e0 ,
+.Fn strrchr
+locates the terminating
+.Ql \e0 .
+.Sh RETURN VALUES
+The
+.Fn strrchr
+function
+returns a pointer to the character,
+or a null
+pointer if
+.Fa c
+does not occur anywhere in
+.Fa s .
+.Sh SEE ALSO
+.Xr index 3 ,
+.Xr memchr 3 ,
+.Xr rindex 3 ,
+.Xr strchr 3 ,
+.Xr strcspn 3 ,
+.Xr strpbrk 3 ,
+.Xr strsep 3 ,
+.Xr strspn 3 ,
+.Xr strstr 3 ,
+.Xr strtok 3
+.Sh STANDARDS
+The
+.Fn strrchr
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/string/strsep.3 b/lib/libc/string/strsep.3
new file mode 100644
index 0000000..938b657
--- /dev/null
+++ b/lib/libc/string/strsep.3
@@ -0,0 +1,107 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)strsep.3	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt STRSEP 3
+.Os
+.Sh NAME
+.Nm strsep
+.Nd separate strings
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft char *
+.Fn strsep "char **stringp" "char *delim"
+.Sh DESCRIPTION
+The
+.Fn strsep
+function locates, in the string referenced by
+.Fa *stringp ,
+the first occurrence of any character in the string
+.Fa delim
+(or the terminating
+.Ql \e0
+character) and replaces it with a
+.Ql \e0 .
+The location of the next character after the delimiter character
+(or NULL, if the end of the string was reached) is stored in
+.Fa *stringp .
+The original value of
+.Fa *stringp
+is returned.
+.Pp
+An ``empty'' field, i.e. one caused by two adjacent delimiter characters,
+can be detected by comparing the location referenced by the pointer returned
+in
+.Fa *stringp
+to
+.Ql \e0 .
+.Pp
+If
+.Fa *stringp
+is initially
+.Dv NULL ,
+.Fn strsep
+returns
+.Dv NULL .
+.Sh EXAMPLES
+The following uses
+.Fn strsep
+to parse a string, containing tokens delimited by white space, into an
+argument vector:
+.Bd -literal -offset indent
+char **ap, *argv[10], *inputstring;
+
+for (ap = argv; (*ap = strsep(&inputstring, " \et")) != NULL;)
+	if (**ap != '\e0')
+		++ap;
+.Ed
+.Sh HISTORY
+The
+.Fn strsep
+function
+is intended as a replacement for the
+.Fn strtok
+function.
+While the
+.Fn strtok
+function should be preferred for portability reasons (it conforms to
+.St -ansiC )
+it is unable to handle empty fields, i.e. detect fields delimited by
+two adjacent delimiter characters, or to be used for more than a single
+string at a time.
+The
+.Fn strsep
+function first appeared in 4.4BSD.
diff --git a/lib/libc/string/strsep.c b/lib/libc/string/strsep.c
new file mode 100644
index 0000000..ddad596
--- /dev/null
+++ b/lib/libc/string/strsep.c
@@ -0,0 +1,80 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+#include <string.h>
+#include <stdio.h>
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strsep.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Get next token from string *stringp, where tokens are possibly-empty
+ * strings separated by characters from delim.
+ *
+ * Writes NULs into the string at *stringp to end tokens.
+ * delim need not remain constant from call to call.
+ * On return, *stringp points past the last NUL written (if there might
+ * be further tokens), or is NULL (if there are definitely no more tokens).
+ *
+ * If *stringp is NULL, strsep returns NULL.
+ */
+char *
+strsep(stringp, delim)
+	register char **stringp;
+	register const char *delim;
+{
+	register char *s;
+	register const char *spanp;
+	register int c, sc;
+	char *tok;
+
+	if ((s = *stringp) == NULL)
+		return (NULL);
+	for (tok = s;;) {
+		c = *s++;
+		spanp = delim;
+		do {
+			if ((sc = *spanp++) == c) {
+				if (c == 0)
+					s = NULL;
+				else
+					s[-1] = 0;
+				*stringp = s;
+				return (tok);
+			}
+		} while (sc != 0);
+	}
+	/* NOTREACHED */
+}
diff --git a/lib/libc/string/strspn.3 b/lib/libc/string/strspn.3
new file mode 100644
index 0000000..04c4bdc
--- /dev/null
+++ b/lib/libc/string/strspn.3
@@ -0,0 +1,79 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strspn.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt STRSPN 3
+.Os
+.Sh NAME
+.Nm strspn
+.Nd span a string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft size_t
+.Fn strspn "const char *s" "const char *charset"
+.Sh DESCRIPTION
+The
+.Fn strcspn
+function
+spans the initial part of the null-terminated string
+.Fa s
+as long as the characters from
+.Fa s
+occur in string
+.Fa charset .
+.Sh RETURN VALUES
+The
+.Fn strspn
+function
+returns the number of characters spanned.
+.Sh SEE ALSO
+.Xr index 3 ,
+.Xr memchr 3 ,
+.Xr rindex 3 ,
+.Xr strchr 3 ,
+.Xr strcspn 3 ,
+.Xr strpbrk 3 ,
+.Xr strrchr 3 ,
+.Xr strsep 3 ,
+.Xr strstr 3 ,
+.Xr strtok 3
+.Sh STANDARDS
+The
+.Fn strspn
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/string/strspn.c b/lib/libc/string/strspn.c
new file mode 100644
index 0000000..4676bd4
--- /dev/null
+++ b/lib/libc/string/strspn.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strspn.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <string.h>
+
+/*
+ * Span the string s2 (skip characters that are in s2).
+ */
+size_t
+strspn(s1, s2)
+	const char *s1;
+	register const char *s2;
+{
+	register const char *p = s1, *spanp;
+	register char c, sc;
+
+	/*
+	 * Skip any characters in s2, excluding the terminating \0.
+	 */
+cont:
+	c = *p++;
+	for (spanp = s2; (sc = *spanp++) != 0;)
+		if (sc == c)
+			goto cont;
+	return (p - 1 - s1);
+}
diff --git a/lib/libc/string/strstr.3 b/lib/libc/string/strstr.3
new file mode 100644
index 0000000..7d16b97
--- /dev/null
+++ b/lib/libc/string/strstr.3
@@ -0,0 +1,88 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strstr.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt STRSTR 3
+.Os
+.Sh NAME
+.Nm strstr
+.Nd locate a substring in a string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft char *
+.Fn strstr "const char *big" "const char *little"
+.Sh DESCRIPTION
+The
+.Fn strstr
+function
+locates the first occurrence of the null-terminated string
+.Fa little
+in the null-terminated string
+.Fa big .
+If
+.Fa little
+is the empty string,
+.Fn strstr
+returns
+.Fa big ;
+if
+.Fa little
+occurs nowhere in
+.Fa big ,
+.Fn strstr
+returns NULL;
+otherwise
+.Fn strstr
+returns a pointer to the first character of the first occurrence of
+.Fa little .
+.Sh SEE ALSO
+.Xr index 3 ,
+.Xr memchr 3 ,
+.Xr rindex 3 ,
+.Xr strchr 3 ,
+.Xr strcspn 3 ,
+.Xr strpbrk 3 ,
+.Xr strrchr 3 ,
+.Xr strsep 3 ,
+.Xr strspn 3 ,
+.Xr strtok 3
+.Sh STANDARDS
+The
+.Fn strstr
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/string/strstr.c b/lib/libc/string/strstr.c
new file mode 100644
index 0000000..1f10961
--- /dev/null
+++ b/lib/libc/string/strstr.c
@@ -0,0 +1,65 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strstr.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <string.h>
+
+/*
+ * Find the first occurrence of find in s.
+ */
+char *
+strstr(s, find)
+	register const char *s, *find;
+{
+	register char c, sc;
+	register size_t len;
+
+	if ((c = *find++) != 0) {
+		len = strlen(find);
+		do {
+			do {
+				if ((sc = *s++) == 0)
+					return (NULL);
+			} while (sc != c);
+		} while (strncmp(s, find, len) != 0);
+		s--;
+	}
+	return ((char *)s);
+}
diff --git a/lib/libc/string/strtok.3 b/lib/libc/string/strtok.3
new file mode 100644
index 0000000..56db2b0
--- /dev/null
+++ b/lib/libc/string/strtok.3
@@ -0,0 +1,110 @@
+.\" Copyright (c) 1988, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strtok.3	8.2 (Berkeley) 2/3/94
+.\"
+.Dd February 3, 1994
+.Dt STRTOK 3
+.Os BSD 3
+.Sh NAME
+.Nm strtok
+.Nd string tokens
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft char *
+.Fn strtok "char *str" "const char *sep"
+.Sh DESCRIPTION
+.Bf -symbolic
+This interface is obsoleted by strsep(3).
+.Ef
+.Pp
+The
+.Fn strtok
+function
+is used to isolate sequential tokens in a null-terminated string,
+.Fa str .
+These tokens are separated in the string by at least one of the
+characters in
+.Fa sep .
+The first time that
+.Fn strtok
+is called,
+.Fa str
+should be specified; subsequent calls, wishing to obtain further tokens
+from the same string, should pass a null pointer instead.
+The separator string,
+.Fa sep ,
+must be supplied each time, and may change between calls.
+.Pp
+The
+.Fn strtok
+function
+returns a pointer to the beginning of each subsequent token in the string,
+after replacing the token itself with a
+.Dv NUL
+character.
+When no more tokens remain, a null pointer is returned.
+.Sh SEE ALSO
+.Xr index 3 ,
+.Xr memchr 3 ,
+.Xr rindex 3 ,
+.Xr strchr 3 ,
+.Xr strcspn 3 ,
+.Xr strpbrk 3 ,
+.Xr strrchr 3 ,
+.Xr strsep 3 ,
+.Xr strspn 3 ,
+.Xr strstr 3
+.Sh STANDARDS
+The
+.Fn strtok
+function
+conforms to
+.St -ansiC .
+.Sh BUGS
+There is no way to get tokens from multiple strings simultaneously.
+.Pp
+The System V
+.Fn strtok ,
+if handed a string containing only delimiter characters,
+will not alter the next starting point, so that a call to
+.Fn strtok
+with a different (or empty) delimiter string
+may return a
+.Pf non- Dv NULL
+value.
+Since this implementation always alters the next starting point,
+such a sequence of calls would always return
+.Dv NULL .
diff --git a/lib/libc/string/strtok.c b/lib/libc/string/strtok.c
new file mode 100644
index 0000000..9151cf2
--- /dev/null
+++ b/lib/libc/string/strtok.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strtok.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stddef.h>
+#include <string.h>
+
+char *
+strtok(s, delim)
+	register char *s;
+	register const char *delim;
+{
+	register char *spanp;
+	register int c, sc;
+	char *tok;
+	static char *last;
+
+
+	if (s == NULL && (s = last) == NULL)
+		return (NULL);
+
+	/*
+	 * Skip (span) leading delimiters (s += strspn(s, delim), sort of).
+	 */
+cont:
+	c = *s++;
+	for (spanp = (char *)delim; (sc = *spanp++) != 0;) {
+		if (c == sc)
+			goto cont;
+	}
+
+	if (c == 0) {		/* no non-delimiter characters */
+		last = NULL;
+		return (NULL);
+	}
+	tok = s - 1;
+
+	/*
+	 * Scan token (scan for delimiters: s += strcspn(s, delim), sort of).
+	 * Note that delim must have one NUL; we stop if we see that, too.
+	 */
+	for (;;) {
+		c = *s++;
+		spanp = (char *)delim;
+		do {
+			if ((sc = *spanp++) == c) {
+				if (c == 0)
+					s = NULL;
+				else
+					s[-1] = 0;
+				last = s;
+				return (tok);
+			}
+		} while (sc != 0);
+	}
+	/* NOTREACHED */
+}
diff --git a/lib/libc/string/strxfrm.3 b/lib/libc/string/strxfrm.3
new file mode 100644
index 0000000..5602671
--- /dev/null
+++ b/lib/libc/string/strxfrm.3
@@ -0,0 +1,77 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)strxfrm.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt STRXFRM 3
+.Os
+.Sh NAME
+.Nm strxfrm
+.Nd transform a string under locale
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft size_t
+.Fn strxfrm "char *dst" "const char *src" "size_t n"
+.Sh DESCRIPTION
+The
+.Fn strxfrm
+function transform null-terminating string pointed by
+.Fa src
+according to the current locale collation if any,
+then copied not more than
+.Fa n-1
+characters of the result string into
+.Fa dst ,
+ending it whith null character and return result length.
+Comparing two strings using
+.Fn strcmp
+after
+.Fn strxfrm
+is equal to comparing
+two original strings with
+.Fn strcoll .
+.Sh BUGS
+Sometimes biheviour of this function is unpredicatable.
+.Sh SEE ALSO
+.Xr setlocale 3 ,
+.Xr strcmp 3 ,
+.Xr strcoll 3
+.Sh STANDARDS
+The
+.Fn strxfrm
+function
+conforms to
+.St -ansiC .
diff --git a/lib/libc/string/strxfrm.c b/lib/libc/string/strxfrm.c
new file mode 100644
index 0000000..eb02c13
--- /dev/null
+++ b/lib/libc/string/strxfrm.c
@@ -0,0 +1,92 @@
+/*-
+ * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
+ *		at Electronni Visti IA, Kiev, Ukraine.
+ *			All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: strxfrm.c,v 1.3 1995/02/18 01:39:00 ache Exp $
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include "collate.h"
+
+size_t
+strxfrm(dest, src, len)
+	char *dest;
+	const char *src;
+	size_t len;
+{
+	int prim, sec, l;
+	char *d = dest, *s, *ss;
+
+	if (len < 1)
+		return 0;
+
+	if (!*src) {
+		*d = '\0';
+		return 0;
+	}
+
+	if (__collate_load_error) {
+		size_t slen = strlen(src);
+
+		if (slen < len) {
+			strcpy(d, src);
+			return slen;
+		}
+		strncpy(d, src, len - 1);
+		d[len - 1] = '\0';
+		return len - 1;
+	}
+
+	ss = s = __collate_substitute(src);
+	prim = sec = 0;
+	while (*s && len > 1) {
+		while (*s && !prim) {
+			__collate_lookup(s, &l, &prim, &sec);
+			s += l;
+		}
+		if (prim) {
+			*d++ = (char)prim;
+			len--;
+		}
+	}
+#if 0
+	s = ss;
+	while (*s && len > 1) {
+		while (*s && !prim) {
+			lookup(s, &l, &prim, &sec);
+			s += l;
+		}
+		if (prim && sec) {
+			*d++ = (char)sec;
+			len--;
+		}
+	}
+#endif /* 0 */
+	*d = '\0';
+	free(ss);
+
+	return d - dest;
+}
diff --git a/lib/libc/string/swab.3 b/lib/libc/string/swab.3
new file mode 100644
index 0000000..70a9205
--- /dev/null
+++ b/lib/libc/string/swab.3
@@ -0,0 +1,65 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)swab.3	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SWAB 3
+.Os
+.Sh NAME
+.Nm swab
+.Nd swap adjacent bytes
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft void
+.Fn swab "const void *src" "void *dst" "size_t len"
+.Sh DESCRIPTION
+The function
+.Fn swab
+copies
+.Fa len
+bytes from the location referenced by
+.Fa src
+to the location referenced by
+.Fa dst ,
+swapping adjacent bytes.
+.Pp
+The argument
+.Fa len
+must be even number.
+.Sh SEE ALSO
+.Xr bzero 3 ,
+.Xr memset 3
+.Sh HISTORY
+A
+.Fn swab
+function appeared in
+.At v7 .
diff --git a/lib/libc/string/swab.c b/lib/libc/string/swab.c
new file mode 100644
index 0000000..a4fc3b9
--- /dev/null
+++ b/lib/libc/string/swab.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Jeffrey Mogul.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)swab.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <string.h>
+
+void
+swab(from, to, len)
+	const void *from;
+	void *to;
+	size_t len;
+{
+	register unsigned long temp;
+	register int n;
+	register char *fp, *tp;
+
+	n = (len >> 1) + 1;
+	fp = (char *)from;
+	tp = (char *)to;
+#define	STEP	temp = *fp++,*tp++ = *fp++,*tp++ = temp
+	/* round to multiple of 8 */
+	while ((--n) & 07)
+		STEP;
+	n >>= 3;
+	while (--n >= 0) {
+		STEP; STEP; STEP; STEP;
+		STEP; STEP; STEP; STEP;
+	}
+}
diff --git a/lib/libc/sys/Makefile.inc b/lib/libc/sys/Makefile.inc
new file mode 100644
index 0000000..dc65844
--- /dev/null
+++ b/lib/libc/sys/Makefile.inc
@@ -0,0 +1,141 @@
+#	@(#)Makefile.inc	8.1 (Berkeley) 6/17/93
+
+# sys sources
+.PATH: ${.CURDIR}/${MACHINE}/sys ${.CURDIR}/sys
+
+# modules with non-default implementations on at least one architecture:
+SRCS+=	Ovfork.S brk.S cerror.S exect.S fork.S pipe.S ptrace.S reboot.S \
+	sbrk.S setlogin.S sigpending.S sigprocmask.S sigreturn.S \
+	sigsuspend.S syscall.S
+
+# glue to provide compatibility between GCC 1.X and 2.X
+SRCS+=	ftruncate.c lseek.c mmap.c truncate.c
+
+# modules with default implementations on all architectures:
+ASM=	accept.o access.o acct.o adjtime.o bind.o chdir.o chflags.o chmod.o \
+	chown.o chroot.o close.o connect.o dup.o dup2.o execve.o fchdir.o \
+	fchflags.o fchmod.o fchown.o fcntl.o flock.o fpathconf.o fstat.o \
+	fstatfs.o fsync.o getdirentries.o getdtablesize.o getegid.o \
+	geteuid.o getfh.o getfsstat.o getgid.o getgroups.o getitimer.o \
+	getpeername.o getpgrp.o getpid.o getppid.o getpriority.o \
+	getrlimit.o getrusage.o getsockname.o getsockopt.o gettimeofday.o \
+	getuid.o ioctl.o kill.o ktrace.o lfs_bmapv.o lfs_markv.o \
+	lfs_segclean.o lfs_segwait.o link.o listen.o lstat.o \
+	madvise.o mincore.o mkdir.o mkfifo.o mknod.o mlock.o mount.o \
+	mprotect.o msgsys.o msync.o munlock.o munmap.o nfssvc.o \
+	ntp_adjtime.o open.o pathconf.o profil.o quotactl.o read.o \
+	readlink.o readv.o recvfrom.o recvmsg.o rename.o revoke.o rmdir.o \
+	rtprio.o select.o semsys.o sendmsg.o sendto.o setegid.o seteuid.o setgid.o \
+	setgroups.o setitimer.o	setpgid.o setpriority.o	\
+	setregid.o setreuid.o setrlimit.o \
+	setsid.o setsockopt.o settimeofday.o setuid.o shmsys.o shutdown.o \
+	sigaction.o sigaltstack.o socket.o socketpair.o stat.o statfs.o \
+	swapon.o symlink.o sync.o sysarch.o umask.o unlink.o unmount.o \
+	utimes.o vadvise.o wait4.o write.o writev.o __syscall.o __sysctl.o
+
+PSEUDO=	_exit.o _getlogin.o
+
+OBJS+=	${ASM} ${PSEUDO}
+
+${ASM}: ${.CURDIR}/${MACHINE}/SYS.h /usr/include/sys/syscall.h
+	@${ECHO} creating ${.PREFIX}.o
+	@printf '#include "SYS.h"\nRSYSCALL(${.PREFIX})\n' | \
+	    ${CPP} ${CFLAGS:M-[ID]*} ${AINC} | ${AS} -o ${.PREFIX}.o
+	@${LD} -x -r ${.PREFIX}.o
+	@mv a.out ${.PREFIX}.o
+
+PASM=	${ASM:.o=.po}
+${PASM}: ${.CURDIR}/${MACHINE}/SYS.h /usr/include/sys/syscall.h
+	@${ECHO} creating ${.PREFIX}.po
+	@printf '#include "SYS.h"\nRSYSCALL(${.PREFIX})\n' | \
+	    ${CPP} -DPROF ${CFLAGS:M-[ID]*} ${AINC} | ${AS} -o ${.PREFIX}.po
+	@${LD} -x -r ${.PREFIX}.po
+	@mv a.out ${.PREFIX}.po
+
+SASM=	${ASM:.o=.so}
+${SASM}: ${.CURDIR}/${MACHINE}/SYS.h /usr/include/sys/syscall.h
+	@${ECHO} creating ${.PREFIX}.so
+	@printf '#include "SYS.h"\nRSYSCALL(${.PREFIX})\n' | \
+	    ${CPP} -DPIC ${CFLAGS:M-[ID]*} ${AINC} | ${AS} -k -o ${.PREFIX}.so
+
+${PSEUDO}: ${.CURDIR}/${MACHINE}/SYS.h /usr/include/sys/syscall.h
+	@${ECHO} creating ${.PREFIX}.o
+	@printf '#include "SYS.h"\nPSEUDO(${.PREFIX},${.PREFIX:S/_//})\n' | \
+	    ${CPP} ${CFLAGS:M-[ID]*} ${AINC} | ${AS} -o ${.PREFIX}.o
+	@${LD} -x -r ${.PREFIX}.o
+	@mv a.out ${.PREFIX}.o
+
+PPSEUDO=${PSEUDO:.o=.po}
+${PPSEUDO}: ${.CURDIR}/${MACHINE}/SYS.h /usr/include/sys/syscall.h
+	@${ECHO} creating ${.PREFIX}.po
+	@printf '#include "SYS.h"\nPSEUDO(${.PREFIX},${.PREFIX:S/_//})\n' | \
+	    ${CPP} -DPROF ${CFLAGS:M-[ID]*} ${AINC} | ${AS} -o ${.PREFIX}.po
+	@${LD} -x -r ${.PREFIX}.po
+	@mv a.out ${.PREFIX}.po
+
+SPSEUDO=${PSEUDO:.o=.so}
+${SPSEUDO}: ${.CURDIR}/${MACHINE}/SYS.h /usr/include/sys/syscall.h
+	@${ECHO} creating ${.PREFIX}.so
+	@printf '#include "SYS.h"\nPSEUDO(${.PREFIX},${.PREFIX:S/_//})\n' | \
+	    ${CPP} -DPIC ${CFLAGS:M-[ID]*} ${AINC} | ${AS} -k -o ${.PREFIX}.so
+
+MAN2+=	sys/accept.2 sys/access.2 sys/acct.2 sys/adjtime.2 sys/bind.2 \
+	sys/brk.2 sys/chdir.2 sys/chflags.2 sys/chmod.2 sys/chown.2 \
+	sys/chroot.2 sys/close.2 sys/connect.2 sys/dup.2 sys/execve.2 \
+	sys/_exit.2 sys/fcntl.2 sys/flock.2 sys/fork.2 sys/fsync.2 \
+	sys/getdirentries.2 sys/getdtablesize.2 sys/getfh.2 sys/getfsstat.2 \
+	sys/getgid.2 sys/getgroups.2 sys/getitimer.2 sys/getlogin.2 \
+	sys/getpeername.2 sys/getpgrp.2 sys/getpid.2 sys/getpriority.2 \
+	sys/getrlimit.2 sys/getrusage.2 sys/getsockname.2 sys/getsockopt.2 \
+	sys/gettimeofday.2 sys/getuid.2 sys/intro.2 sys/ioctl.2 sys/kill.2 \
+	sys/ktrace.2 sys/link.2 sys/listen.2 sys/lseek.2 sys/mkdir.2 \
+	sys/mkfifo.2 sys/mknod.2 sys/madvise.2 sys/mincore.2 sys/mlock.2 \
+	sys/mmap.2 sys/mount.2 sys/mprotect.2 sys/msync.2 sys/munmap.2 \
+	sys/nfssvc.2 sys/open.2 sys/pathconf.2 sys/pipe.2 sys/profil.2 \
+	sys/quotactl.2 sys/read.2 sys/readlink.2 sys/reboot.2 sys/recv.2 \
+	sys/rename.2 sys/revoke.2 sys/rmdir.2 sys/rtprio.2 sys/select.2 \
+	sys/semctl.2 sys/semget.2 sys/semop.2 \
+	sys/send.2 sys/setgroups.2 \
+	sys/setpgid.2 sys/setregid.2 sys/setreuid.2 \
+	sys/setsid.2 sys/setuid.2 sys/shmat.2 sys/shmctl.2 sys/shmget.2 \
+	sys/shutdown.2 \
+	sys/sigaction.2 sys/sigpending.2 sys/sigprocmask.2 sys/sigreturn.2 \
+	sys/sigaltstack.2 sys/sigstack.2 sys/sigsuspend.2 sys/socket.2 \
+	sys/socketpair.2 sys/stat.2 sys/statfs.2 sys/swapon.2 sys/symlink.2 \
+	sys/sync.2 sys/syscall.2 sys/truncate.2 sys/umask.2 sys/unlink.2 \
+	sys/utimes.2 sys/vfork.2 sys/wait.2 sys/write.2
+
+# missing: ptrace.2
+
+MLINKS+=brk.2 sbrk.2
+MLINKS+=dup.2 dup2.2
+MLINKS+=chdir.2 fchdir.2
+MLINKS+=chflags.2 fchflags.2
+MLINKS+=chmod.2 fchmod.2
+MLINKS+=chown.2 fchown.2
+MLINKS+=getgid.2 getegid.2
+MLINKS+=getitimer.2 setitimer.2
+MLINKS+=getlogin.2 setlogin.2
+MLINKS+=getpid.2 getppid.2
+MLINKS+=getpriority.2 setpriority.2
+MLINKS+=getrlimit.2 setrlimit.2
+MLINKS+=getsockopt.2 setsockopt.2
+MLINKS+=gettimeofday.2 settimeofday.2
+MLINKS+=getuid.2 geteuid.2
+MLINKS+=intro.2 errno.2
+MLINKS+=lseek.2 seek.2
+MLINKS+=mlock.2 munlock.2
+MLINKS+=mount.2 unmount.2
+MLINKS+=pathconf.2 fpathconf.2
+MLINKS+=read.2 readv.2
+MLINKS+=recv.2 recvfrom.2 recv.2 recvmsg.2
+MLINKS+=send.2 sendmsg.2 send.2 sendto.2
+MLINKS+=setpgid.2 setpgrp.2
+MLINKS+=setuid.2 setegid.2 setuid.2 seteuid.2 setuid.2 setgid.2
+MLINKS+=shmat.2 shmdt.2
+MLINKS+=stat.2 fstat.2 stat.2 lstat.2
+MLINKS+=statfs.2 fstatfs.2
+MLINKS+=syscall.2 __syscall.2
+MLINKS+=truncate.2 ftruncate.2
+MLINKS+=wait.2 wait3.2 wait.2 wait4.2 wait.2 waitpid.2
+MLINKS+=write.2 writev.2
diff --git a/lib/libc/sys/_exit.2 b/lib/libc/sys/_exit.2
new file mode 100644
index 0000000..73e6062
--- /dev/null
+++ b/lib/libc/sys/_exit.2
@@ -0,0 +1,112 @@
+.\" Copyright (c) 1980, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)_exit.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt EXIT 2
+.Os BSD 4
+.Sh NAME
+.Nm _exit
+.Nd terminate the calling process
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft void
+.Fn _exit "int status"
+.Sh DESCRIPTION
+The
+.Fn _exit
+function
+terminates a process with the following consequences:
+.Bl -bullet
+.It
+All of the descriptors open in the calling process are closed.
+This may entail delays, for example, waiting for output to drain;
+a process in this state may not be killed, as it is already dying.
+.It
+If the parent process of the calling process has an outstanding
+.Xr wait
+call
+or catches the
+.Dv SIGCHLD
+signal,
+it is notified of the calling process's termination and
+the
+.Em status
+is set as defined by
+.Xr wait 2 .
+.It
+The parent process-ID of all of the calling process's existing child
+processes are set to 1; the initialization process
+(see the DEFINITIONS section of
+.Xr intro 2 )
+inherits each of these processes.
+.It
+If the termination of the process causes any process group
+to become orphaned (usually because the parents of all members
+of the group have now exited; see
+.Dq orphaned process group
+in
+.Xr intro 2 ) ,
+and if any member of the orphaned group is stopped,
+the
+.Dv SIGHUP
+signal and the
+.Dv SIGCONT
+signal are sent to all members of the newly-orphaned process group.
+.It
+If the process is a controlling process (see
+.Xr intro 2 ) ,
+the
+.Dv SIGHUP
+signal is sent to the foreground process group of the controlling terminal,
+and all current access to the controlling terminal is revoked.
+.El
+.Pp
+Most C programs call the library routine
+.Xr exit 3 ,
+which flushes buffers, closes streams, unlinks temporary files, etc.,
+before
+calling
+.Fn _exit .
+.Sh RETURN VALUE
+.Fn _exit
+can never return.
+.Sh SEE ALSO
+.Xr fork 2 ,
+.Xr sigvec 2 ,
+.Xr wait 2 ,
+.Xr exit 3
+.Sh STANDARDS
+The
+.Nm _exit
+function is defined by
+.St -p1003.1-88 .
diff --git a/lib/libc/sys/accept.2 b/lib/libc/sys/accept.2
new file mode 100644
index 0000000..d475e36
--- /dev/null
+++ b/lib/libc/sys/accept.2
@@ -0,0 +1,166 @@
+.\" Copyright (c) 1983, 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)accept.2	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt ACCEPT 2
+.Os BSD 4.2
+.Sh NAME
+.Nm accept
+.Nd accept a connection on a socket
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/socket.h>
+.Ft int
+.Fn accept "int s" "struct sockaddr *addr" "int *addrlen"
+.Sh DESCRIPTION
+The argument
+.Fa s
+is a socket that has been created with
+.Xr socket 2 ,
+bound to an address with
+.Xr bind 2 ,
+and is listening for connections after a
+.Xr listen 2 .
+The
+.Fn accept
+argument
+extracts the first connection request
+on the queue of pending connections, creates
+a new socket with the same properties of 
+.Fa s
+and allocates a new file descriptor
+for the socket.  If no pending connections are
+present on the queue, and the socket is not marked
+as non-blocking,
+.Fn accept
+blocks the caller until a connection is present.
+If the socket is marked non-blocking and no pending
+connections are present on the queue, 
+.Fn accept
+returns an error as described below.
+The accepted socket
+may not be used
+to accept more connections.  The original socket
+.Fa s
+remains open.
+.Pp
+The argument
+.Fa addr
+is a result parameter that is filled in with
+the address of the connecting entity,
+as known to the communications layer.
+The exact format of the
+.Fa addr
+parameter is determined by the domain in which the communication
+is occurring.
+The 
+.Fa addrlen
+is a value-result parameter; it should initially contain the
+amount of space pointed to by
+.Fa addr ;
+on return it will contain the actual length (in bytes) of the
+address returned.
+This call
+is used with connection-based socket types, currently with
+.Dv SOCK_STREAM . 
+.Pp
+It is possible to
+.Xr select 2
+a socket for the purposes of doing an
+.Fn accept
+by selecting it for read.
+.Pp
+For certain protocols which require an explicit confirmation,
+such as
+.Tn ISO
+or
+.Tn DATAKIT ,
+.Fn accept
+can be thought of
+as merely dequeueing the next connection
+request and not implying confirmation.
+Confirmation can be implied by a normal read or write on the new
+file descriptor, and rejection can be implied by closing the
+new socket.
+.Pp
+One can obtain user connection request data without confirming
+the connection by issuing a 
+.Xr recvmsg 2
+call with an
+.Fa msg_iovlen
+of 0 and a non-zero
+.Fa msg_controllen ,
+or by issuing a
+.Xr getsockopt 2
+request.
+Similarly, one can provide user connection rejection information
+by issuing a
+.Xr sendmsg 2
+call with providing only the control information,
+or by calling
+.Xr setsockopt 2 .
+.Sh RETURN VALUES
+The call returns \-1 on error.  If it succeeds, it returns a non-negative
+integer that is a descriptor for the accepted socket.
+.Sh ERRORS
+The
+.Fn accept
+will fail if:
+.Bl -tag -width EWOULDBLOCK
+.It Bq Er EBADF
+The descriptor is invalid.
+.It Bq Er ENOTSOCK
+The descriptor references a file, not a socket.
+.It Bq Er EOPNOTSUPP
+The referenced socket is not of type
+.Dv SOCK_STREAM . 
+.It Bq Er EFAULT
+The
+.Fa addr
+parameter is not in a writable part of the
+user address space.
+.It Bq Er EWOULDBLOCK
+The socket is marked non-blocking and no connections
+are present to be accepted.
+.El
+.Sh SEE ALSO
+.Xr bind 2 ,
+.Xr connect 2 ,
+.Xr listen 2 ,
+.Xr select 2 ,
+.Xr socket 2
+.Sh HISTORY
+The
+.Nm
+function appeared in 
+.Bx 4.2 .
diff --git a/lib/libc/sys/access.2 b/lib/libc/sys/access.2
new file mode 100644
index 0000000..0dc9d2e
--- /dev/null
+++ b/lib/libc/sys/access.2
@@ -0,0 +1,130 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)access.2	8.2 (Berkeley) 4/1/94
+.\"
+.Dd April 1, 1994
+.Dt ACCESS 2
+.Os BSD 4
+.Sh NAME
+.Nm access
+.Nd check access permissions of a file or pathname
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn access "const char *path" "int mode"
+.Sh DESCRIPTION
+The
+.Fn access
+function checks the accessibility of the
+file named by
+.Fa path
+for the access permissions indicated by
+.Fa mode .
+The value of
+.Fa mode
+is the bitwise inclusive OR of the access permissions to be
+checked
+.Pf ( Dv R_OK
+for read permission,
+.Dv W_OK
+for write permission and
+.Dv X_OK
+for execute/search permission) or the existence test,
+.Dv F_OK .
+All components of the pathname
+.Fa path
+are checked for access permissions (including
+.Dv F_OK ) .
+.Pp
+The real user ID is used in place of the effective user ID
+and the real group access list
+(including the real group ID) are
+used in place of the effective ID for verifying permission.
+.Pp
+Even if a process has appropriate privileges and indicates success for
+.Dv X_OK ,
+the file may not actually have execute permission bits set.
+Likewise for
+.Dv R_OK
+and
+.Dv W_OK .
+.Sh RETURN VALUES
+If
+.Fa path
+cannot be found or if any of the desired access modes would
+not be granted, then a -1 value is returned; otherwise
+a 0 value is returned.
+.Sh ERRORS
+Access to the file is denied if:
+.Bl -tag -width Er
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named file does not exist.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EROFS
+Write access is requested for a file on a read-only file system.
+.It Bq Er ETXTBSY
+Write access is requested for a pure procedure (shared text)
+file presently being executed.
+.It Bq Er EACCES
+Permission bits of the file mode do not permit the requested
+access, or search permission is denied on a component of the
+path prefix.  The owner of a file has permission checked with
+respect to the ``owner'' read, write, and execute mode bits,
+members of the file's group other than the owner have permission
+checked with respect to the ``group'' mode bits, and all
+others have permissions checked with respect to the ``other''
+mode bits.
+.It Bq Er EFAULT
+.Fa Path
+points outside the process's allocated address space.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.El
+.Sh SEE ALSO
+.Xr chmod 2 ,
+.Xr stat 2
+.Sh STANDARDS
+.Fn Access
+conforms to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
+.Sh CAVEAT
+.Fn Access
+is a potential security hole and
+should never be used.
diff --git a/lib/libc/sys/acct.2 b/lib/libc/sys/acct.2
new file mode 100644
index 0000000..bcd45ca
--- /dev/null
+++ b/lib/libc/sys/acct.2
@@ -0,0 +1,115 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)acct.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ACCT 2
+.Os BSD 4
+.Sh NAME
+.Nm acct
+.Nd enable or disable process accounting
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn acct "const char *file"
+.Sh DESCRIPTION
+The
+.Fn acct
+call enables or disables the collection of system accounting
+records.
+If the argument
+.Fa file
+is a nil pointer, accounting is disabled.
+If
+.Fa file
+is an
+.Em existing
+pathname (null-terminated), record collection is enabled and for 
+every process initiated which terminates under normal
+conditions an accounting record is appended to
+.Fa file .
+Abnormal conditions of termination are reboots
+or other fatal system problems.
+Records for processes which never terminate can not be
+produced by
+.Fn acct .
+.Pp
+For more information on the record structure used by
+.Fn acct ,
+see
+.Pa /usr/include/sys/acct.h
+and
+.Xr acct 5 .
+.Pp
+This call is permitted only to the super-user.
+.Sh NOTES
+Accounting is automatically disabled when the file system the
+accounting file resides on runs out of space; it is enabled when
+space once again becomes available.
+.Sh RETURN VALUES
+On error -1 is returned.
+The file must exist and the call may be exercised only by the super-user.
+.Sh ERRORS
+.Fn Acct
+will fail if one of the following is true:
+.Bl -tag -width Er
+.It Bq Er EPERM
+The caller is not the super-user.
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named file does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix,
+or the path name is not a regular file.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EROFS
+The named file resides on a read-only file system.
+.It Bq Er EFAULT
+.Fa File
+points outside the process's allocated address space.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.El
+.Sh SEE ALSO
+.Xr acct 5 ,
+.Xr sa 8
+.Sh HISTORY
+An
+.Nm
+function call appeared in Version 7 AT&T UNIX.
diff --git a/lib/libc/sys/adjtime.2 b/lib/libc/sys/adjtime.2
new file mode 100644
index 0000000..84b9ad8
--- /dev/null
+++ b/lib/libc/sys/adjtime.2
@@ -0,0 +1,111 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)adjtime.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt ADJTIME 2
+.Os BSD 4.3
+.Sh NAME
+.Nm adjtime
+.Nd "correct the time to allow synchronization of the system clock"
+.Sh SYNOPSIS
+.Fd #include <sys/time.h>
+.Ft int
+.Fn adjtime "struct timeval *delta" "struct timeval *olddelta"
+.Sh DESCRIPTION
+.Fn Adjtime
+makes small adjustments to the system time, as returned by
+.Xr gettimeofday 2 ,
+advancing or retarding it
+by the time specified by the timeval
+.Fa delta .
+If
+.Fa delta
+is negative, the clock is
+slowed down by incrementing it more slowly than normal until
+the correction is complete.
+If
+.Fa delta
+is positive, a larger increment than normal
+is used.
+The skew used to perform the correction is generally a fraction of one percent.
+Thus, the time is always
+a monotonically increasing function.
+A time correction from an earlier call to
+.Fn adjtime
+may not be finished when
+.Fn adjtime
+is called again.
+If
+.Fa olddelta
+is non-nil,
+the structure pointed to will contain, upon return, the
+number of microseconds still to be corrected
+from the earlier call.
+.Pp
+This call may be used by time servers that synchronize the clocks
+of computers in a local area network.
+Such time servers would slow down the clocks of some machines
+and speed up the clocks of others to bring them to the average network time.
+.Pp
+The call 
+.Fn adjtime
+is restricted to the super-user.
+.Sh RETURN VALUES
+A return value of 0 indicates that the call succeeded.
+A return value of -1 indicates that an error occurred, and in this
+case an error code is stored in the global variable
+.Va errno .
+.Sh ERRORS
+.Fn Adjtime
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EFAULT
+An argument points outside the process's allocated address space.
+.It Bq Er EPERM
+The process's effective user ID is not that of the super-user.
+.El
+.Sh SEE ALSO
+.Xr date 1 ,
+.Xr gettimeofday 2 ,
+.Xr timed 8 ,
+.Xr timedc 8 ,
+.Rs
+.%T "TSP: The Time Synchronization Protocol for UNIX 4.3BSD"
+.%A R. Gusella
+.%A S. Zatti
+.Re
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.3 .
diff --git a/lib/libc/sys/bind.2 b/lib/libc/sys/bind.2
new file mode 100644
index 0000000..18512e2
--- /dev/null
+++ b/lib/libc/sys/bind.2
@@ -0,0 +1,126 @@
+.\" Copyright (c) 1983, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)bind.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt BIND 2
+.Os BSD 4.2
+.Sh NAME
+.Nm bind
+.Nd bind a name to a socket
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/socket.h>
+.Ft int
+.Fn bind "int s" "struct sockaddr *name" "int namelen"
+.Sh DESCRIPTION
+.Fn Bind
+assigns a name to an unnamed socket.
+When a socket is created 
+with
+.Xr socket 2
+it exists in a name space (address family)
+but has no name assigned.
+.Fn Bind
+requests that
+.Fa name
+be assigned to the socket.
+.Sh NOTES
+Binding a name in the UNIX domain creates a socket in the file
+system that must be deleted by the caller when it is no longer
+needed (using
+.Xr unlink 2 ) .
+.Pp
+The rules used in name binding vary between communication domains.
+Consult the manual entries in section 4 for detailed information.
+.Sh RETURN VALUES
+If the bind is successful, a 0 value is returned.
+A return value of -1 indicates an error, which is
+further specified in the global
+.Va errno .
+.Sh ERRORS
+The
+.Fn bind
+call will fail if:
+.Bl -tag -width EADDRNOTAVA
+.It Bq Er EBADF
+.Fa S
+is not a valid descriptor.
+.It Bq Er ENOTSOCK
+.Fa S
+is not a socket.
+.It Bq Er EADDRNOTAVAIL
+The specified address is not available from the local machine.
+.It Bq Er EADDRINUSE
+The specified address is already in use.
+.It Bq Er EINVAL
+The socket is already bound to an address.
+.It Bq Er EACCES
+The requested address is protected, and the current user
+has inadequate permission to access it.
+.It Bq Er EFAULT
+The
+.Fa name
+parameter is not in a valid part of the user
+address space.
+.El
+.Pp
+The following errors are specific to binding names in the UNIX domain.
+.Bl -tag -width EADDRNOTAVA
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+A prefix component of the path name does not exist.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EIO
+An I/O error occurred while making the directory entry or allocating the inode.
+.It Bq Er EROFS
+The name would reside on a read-only file system.
+.It Bq Er EISDIR
+An empty pathname was specified.
+.El
+.Sh SEE ALSO
+.Xr connect 2 ,
+.Xr listen 2 ,
+.Xr socket 2 ,
+.Xr getsockname 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/brk.2 b/lib/libc/sys/brk.2
new file mode 100644
index 0000000..7580f38
--- /dev/null
+++ b/lib/libc/sys/brk.2
@@ -0,0 +1,146 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)brk.2	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt BRK 2
+.Os BSD 4
+.Sh NAME
+.Nm brk ,
+.Nm sbrk
+.Nd change data segment size
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Ft int
+.Fn brk "const char *addr"
+.Ft char *
+.Fn *sbrk "int incr"
+.Sh DESCRIPTION
+.Bf -symbolic
+The brk and sbrk functions are historical curiosities
+left over from earlier days before the advent of virtual memory management.
+.Ef
+The
+.Fn brk
+function
+sets the break or lowest address
+of a process's data segment (uninitialized data) to
+.Fa addr
+(immediately above bss).
+Data addressing is restricted between
+.Fa addr
+and the lowest stack pointer to the stack segment.
+Memory is allocated by
+.Fa brk
+in page size pieces;
+if
+.Fa addr
+is not evenly divisible by the system page size, it is
+increased to the next page boundary.
+.Pp
+.\" The
+.\" .Nm sbrk
+.\" function
+.\" allocates chunks of
+.\" .Fa incr
+.\" bytes
+.\" to the process's data space
+.\" and returns an address pointer.
+.\" The
+.\" .Xr malloc 3
+.\" function utilizes
+.\" .Nm sbrk .
+.\" .Pp
+The current value of the program break is reliably returned by
+.Dq Li sbrk(0)
+(see also 
+.Xr end 3 ) .
+The
+.Xr getrlimit 2
+system call may be used to determine
+the maximum permissible size of the
+.Em data
+segment;
+it will not be possible to set the break
+beyond the
+.Em rlim_max
+value returned from a call to
+.Xr getrlimit ,
+e.g.
+.Dq qetext + rlp\(->rlim_max.
+(see
+.Xr end 3
+for the definition of
+.Em etext ) .
+.Sh RETURN VALUES
+.Nm Brk
+returns 0 if successful;
+otherwise -1 with
+.Va errno
+set to indicate why the allocation failed.
+The
+.Nm sbrk
+returns a pointer to the base of the new storage if successful;
+otherwise -1 with
+.Va errno
+set to indicate why the allocation failed.
+.Sh ERRORS
+.Xr Sbrk
+will fail and no additional memory will be allocated if
+one of the following are true:
+.Bl -tag -width [ENOMEM]
+.It Bq Er ENOMEM
+The limit, as set by
+.Xr setrlimit 2 ,
+was exceeded.
+.It Bq Er ENOMEM
+The maximum possible size of a data segment (compiled into the
+system) was exceeded.
+.It Bq Er ENOMEM
+Insufficient space existed in the swap area
+to support the expansion.
+.El
+.Sh SEE ALSO
+.Xr execve 2 ,
+.Xr getrlimit 2 ,
+.Xr malloc 3 ,
+.Xr end 3
+.Sh BUGS
+Setting the break may fail due to a temporary lack of
+swap space.  It is not possible to distinguish this
+from a failure caused by exceeding the maximum size of
+the data segment without consulting 
+.Xr getrlimit .
+.Sh HISTORY
+A
+.Nm
+function call appeared in Version 7 AT&T UNIX.
diff --git a/lib/libc/sys/chdir.2 b/lib/libc/sys/chdir.2
new file mode 100644
index 0000000..0b06fa8
--- /dev/null
+++ b/lib/libc/sys/chdir.2
@@ -0,0 +1,129 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)chdir.2	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt CHDIR 2
+.Os BSD 4
+.Sh NAME
+.Nm chdir ,
+.Nm fchdir
+.Nd change current working directory
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn chdir "const char *path"
+.Ft int
+.Fn fchdir "int fd"
+.Sh DESCRIPTION
+The
+.Fa path
+argument points to the pathname of a directory.
+The
+.Fn chdir
+function
+causes the named directory
+to become the current working directory, that is,
+the starting point for path searches of pathnames not beginning with
+a slash,
+.Ql / .
+.Pp
+The
+.Fn fchdir
+function
+causes the directory referenced by
+.Fa fd
+to become the current working directory,
+the starting point for path searches of pathnames not beginning with
+a slash,
+.Ql / .
+.Pp
+In order for a directory to become the current directory,
+a process must have execute (search) access to the directory.
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.
+Otherwise, a value of -1 is returned and
+.Va errno
+is set to indicate
+the error.
+.Sh ERRORS
+.Fn Chdir
+will fail and the current working directory will be unchanged if
+one or more of the following are true:
+.Bl -tag -width Er
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named directory does not exist.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EACCES
+Search permission is denied for any component of
+the path name.
+.It Bq Er EFAULT
+.Fa Path
+points outside the process's allocated address space.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.El
+.Pp
+.Fn Fchdir
+will fail and the current working directory will be unchanged if
+one or more of the following are true:
+.Bl -tag -width Er
+.It Bq Er EACCES
+Search permission is denied for the directory referenced by the
+file descriptor.
+.It Bq Er ENOTDIR
+The file descriptor does not reference a directory.
+.It Bq Er EBADF
+The argument
+.Fa fd
+is not a valid file descriptor.
+.El
+.Sh SEE ALSO
+.Xr chroot 2
+.Sh STANDARDS
+.Fn Chdir
+is expected to conform to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
+.Sh HISTORY
+The
+.Fn fchdir
+function call
+appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/chflags.2 b/lib/libc/sys/chflags.2
new file mode 100644
index 0000000..8481851
--- /dev/null
+++ b/lib/libc/sys/chflags.2
@@ -0,0 +1,154 @@
+.\" Copyright (c) 1989, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)chflags.2	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt CHFLAGS 2
+.Os
+.Sh NAME
+.Nm chflags ,
+.Nm fchflags
+.Nd set file flags
+.Sh SYNOPSIS
+.Fd #include <sys/stat.h>
+.Fd #include <unistd.h>
+.Ft int
+.Fn chflags "const char *path"  "u_long flags"
+.Ft int
+.Fn fchflags "int fd" "u_long flags"
+.Sh DESCRIPTION
+The file whose name
+is given by
+.Fa path
+or referenced by the descriptor
+.Fa fd
+has its flags changed to
+.Fa flags .
+.Pp
+The flags specified are formed by
+.Em or Ns 'ing
+the following values
+.Pp
+.Bl -tag -width "SF_IMMUTABLE" -compact -offset indent
+.It UF_NODUMP
+Do not dump the file.
+.It UF_IMMUTABLE
+The file may not be changed.
+.It UF_APPEND
+The file may only be appended to.
+.\".It ARCHIVED
+.\"File is archived.
+.It SF_IMMUTABLE
+The file may not be changed.
+.It SF_APPEND
+The file may only be appended to.
+.El
+.Pp
+The
+.Dq UF_IMMUTABLE
+and
+.Dq UF_APPEND
+flags may be set or unset by either the owner of a file or the super-user.
+.Pp
+The
+.Dq SF_IMMUTABLE
+and
+.Dq SF_APPEND
+flags may only be set or unset by the super-user.
+They may be set at any time, but normally may only be unset when
+the system is in single-user mode.
+(See
+.Xr init 8
+for details.)
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.
+Otherwise, -1 is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Chflags
+will fail it:
+.Bl -tag -width Er
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named file does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EPERM
+The effective user ID does not match the owner of the file and
+the effective user ID is not the super-user.
+.It Bq Er EROFS
+The named file resides on a read-only file system.
+.It Bq Er EFAULT
+.Fa Path
+points outside the process's allocated address space.
+.It Bq Er EIO
+An
+.Tn I/O
+error occurred while reading from or writing to the file system.
+.El
+.Pp
+.Fn Fchflags
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EBADF
+The descriptor is not valid.
+.It Bq Er EINVAL
+.Fa Fd
+refers to a socket, not to a file.
+.It Bq Er EPERM
+The effective user ID does not match the owner of the file and
+the effective user ID is not the super-user.
+.It Bq Er EROFS
+The file resides on a read-only file system.
+.It Bq Er EIO
+An
+.Tn I/O
+error occurred while reading from or writing to the file system.
+.El
+.Sh SEE ALSO
+.Xr chflags 1,
+.Xr init 8
+.Sh HISTORY
+The
+.Nm chflags
+and
+.Nm fchflags
+functions first appeared in 4.4BSD.
diff --git a/lib/libc/sys/chmod.2 b/lib/libc/sys/chmod.2
new file mode 100644
index 0000000..1075158
--- /dev/null
+++ b/lib/libc/sys/chmod.2
@@ -0,0 +1,182 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)chmod.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt CHMOD 2
+.Os BSD 4
+.Sh NAME
+.Nm chmod ,
+.Nm fchmod
+.Nd change mode of file
+.Sh SYNOPSIS
+.Fd #include <sys/stat.h>
+.Ft int
+.Fn chmod "const char *path" "mode_t mode"
+.Ft int
+.Fn fchmod "int fd" "mode_t mode"
+.Sh DESCRIPTION
+The function
+.Fn chmod
+sets the file permission bits
+of the file
+specified by the pathname
+.Fa path
+to
+.Fa mode .
+.Fn Fchmod
+sets the permission bits of the specified
+file descriptor
+.Fa fd .
+.Fn Chmod
+verifies that the process owner (user) either owns
+the file specified by
+.Fa path
+(or
+.Fa fd ) ,
+or
+is the super-user.
+A mode is created from
+.Em or'd
+permission bit masks
+defined in
+.Aq Pa sys/stat.h :
+.Bd -literal -offset indent -compact
+#define S_IRWXU 0000700    /* RWX mask for owner */
+#define S_IRUSR 0000400    /* R for owner */
+#define S_IWUSR 0000200    /* W for owner */
+#define S_IXUSR 0000100    /* X for owner */
+
+#define S_IRWXG 0000070    /* RWX mask for group */
+#define S_IRGRP 0000040    /* R for group */
+#define S_IWGRP 0000020    /* W for group */
+#define S_IXGRP 0000010    /* X for group */
+
+#define S_IRWXO 0000007    /* RWX mask for other */
+#define S_IROTH 0000004    /* R for other */
+#define S_IWOTH 0000002    /* W for other */
+#define S_IXOTH 0000001    /* X for other */
+
+#define S_ISUID 0004000    /* set user id on execution */
+#define S_ISGID 0002000    /* set group id on execution */
+#define S_ISVTX 0001000    /* save swapped text even after use */
+.Ed
+.Pp
+The
+.Dv ISVTX
+(the
+.Em sticky bit )
+indicates to the system which executable files are shareable (the
+default) and the system maintains the program text of the files
+in the swap area. The sticky bit may only be set by the super user
+on shareable executable files.
+.Pp
+If mode
+.Dv ISVTX
+(the `sticky bit') is set on a directory,
+an unprivileged user may not delete or rename
+files of other users in that directory. The sticky bit may be
+set by any user on a directory which the user owns or has appropriate
+permissions.
+For more details of the properties of the sticky bit, see
+.Xr sticky 8 .
+.Pp
+Writing or changing the owner of a file
+turns off the set-user-id and set-group-id bits
+unless the user is the super-user.
+This makes the system somewhat more secure
+by protecting set-user-id (set-group-id) files
+from remaining set-user-id (set-group-id) if they are modified,
+at the expense of a degree of compatibility.
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.
+Otherwise, a value of -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Chmod
+will fail and the file mode will be unchanged if:
+.Bl -tag -width Er
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named file does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EPERM
+The effective user ID does not match the owner of the file and
+the effective user ID is not the super-user.
+.It Bq Er EROFS
+The named file resides on a read-only file system.
+.It Bq Er EFAULT
+.Fa Path
+points outside the process's allocated address space.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.El
+.Pp
+.Fn Fchmod
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EBADF
+The descriptor is not valid.
+.It Bq Er EINVAL
+.Fa Fd
+refers to a socket, not to a file.
+.It Bq Er EROFS
+The file resides on a read-only file system.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.El
+.Sh SEE ALSO
+.Xr chmod 1 ,
+.Xr open 2 ,
+.Xr chown 2 ,
+.Xr stat 2 ,
+.Xr sticky 8
+.Sh STANDARDS
+.Fn Chmod
+is expected to conform to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
+.Sh HISTORY
+The
+.Fn fchmod
+function call
+appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/chown.2 b/lib/libc/sys/chown.2
new file mode 100644
index 0000000..11c3956
--- /dev/null
+++ b/lib/libc/sys/chown.2
@@ -0,0 +1,148 @@
+.\" Copyright (c) 1980, 1991, 1993, 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)chown.2	8.4 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt CHOWN 2
+.Os BSD 4
+.Sh NAME
+.Nm chown ,
+.Nm fchown
+.Nd change owner and group of a file
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn chown "const char *path" "uid_t owner" "gid_t group"
+.Ft int
+.Fn fchown "int fd" "uid_t owner" "gid_t group"
+.Sh DESCRIPTION
+The owner ID and group ID of the file
+named by
+.Fa path
+or referenced by
+.Fa fd
+is changed as specified by the arguments
+.Fa owner
+and 
+.Fa group .
+The owner of a file may change the
+.Fa group
+to a group of which
+he or she is a member,
+but the change
+.Fa owner
+capability is restricted to the super-user.
+.Pp
+.Fn Chown
+clears the set-user-id and set-group-id bits
+on the file
+to prevent accidental or mischievous creation of
+set-user-id and set-group-id programs.
+.Pp
+.Fn Fchown
+is particularly useful when used in conjunction
+with the file locking primitives (see
+.Xr flock 2 ) .
+.Pp
+One of the owner or group id's
+may be left unchanged by specifying it as -1.
+.Sh RETURN VALUES
+Zero is returned if the operation was successful;
+-1 is returned if an error occurs, with a more specific
+error code being placed in the global variable
+.Va errno .
+.Sh ERRORS
+.Fn Chown
+will fail and the file will be unchanged if:
+.Bl -tag -width Er
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named file does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EPERM
+The effective user ID is not the super-user.
+.It Bq Er EROFS
+The named file resides on a read-only file system.
+.It Bq Er EFAULT
+.Fa Path
+points outside the process's allocated address space.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.El
+.Pp
+.Fn Fchown
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EBADF
+.Fa Fd
+does not refer to a valid descriptor.
+.It Bq Er EINVAL
+.Fa Fd
+refers to a socket, not a file.
+.It Bq Er EPERM
+The effective user ID is not the super-user.
+.It Bq Er EROFS
+The named file resides on a read-only file system.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.El
+.Sh SEE ALSO
+.Xr chown 8 ,
+.Xr chgrp 1 ,
+.Xr chmod 2 ,
+.Xr flock 2
+.Sh STANDARDS
+.Fn Chown
+is expected to conform to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
+.Sh HISTORY
+The
+.Fn fchown
+function call
+appeared in
+.Bx 4.2 .
+.Pp
+The
+.Fn chown
+and
+.Fn fchown
+functions were changed to follow symbolic links in
+.Bx 4.4 .
diff --git a/lib/libc/sys/chroot.2 b/lib/libc/sys/chroot.2
new file mode 100644
index 0000000..d8763fe
--- /dev/null
+++ b/lib/libc/sys/chroot.2
@@ -0,0 +1,97 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)chroot.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt CHROOT 2
+.Os BSD 4.2
+.Sh NAME
+.Nm chroot
+.Nd change root directory
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn chroot "const char *dirname"
+.Sh DESCRIPTION
+.Fa Dirname
+is the address of the pathname of a directory, terminated by an ASCII NUL.
+.Fn Chroot
+causes
+.Fa dirname
+to become the root directory,
+that is, the starting point for path searches of pathnames
+beginning with
+.Ql / .
+.Pp
+In order for a directory to become the root directory
+a process must have execute (search) access for that directory.
+.Pp
+It should be noted that
+.Fn chroot
+has no effect on the process's current directory.
+.Pp
+This call is restricted to the super-user.
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.  Otherwise,
+a value of -1 is returned and
+.Va errno
+is set to indicate an error.
+.Sh ERRORS
+.Fn Chroot
+will fail and the root directory will be unchanged if:
+.Bl -tag -width [ENOTDIR]
+.It Bq Er ENOTDIR
+A component of the path name is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named directory does not exist.
+.It Bq Er EACCES
+Search permission is denied for any component of the path name.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EFAULT
+.Fa Path
+points outside the process's allocated address space.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.El
+.Sh SEE ALSO
+.Xr chdir 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/close.2 b/lib/libc/sys/close.2
new file mode 100644
index 0000000..885ac80
--- /dev/null
+++ b/lib/libc/sys/close.2
@@ -0,0 +1,120 @@
+.\" Copyright (c) 1980, 1991, 1993, 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)close.2	8.2 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt CLOSE 2
+.Os BSD 4
+.Sh NAME
+.Nm close
+.Nd delete a descriptor
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn close "int d"
+.Sh DESCRIPTION
+The
+.Fn close
+call deletes a descriptor from the per-process object
+reference table.
+If this is the last reference to the underlying object, the
+object will be deactivated.
+For example, on the last close of a file
+the current
+.Em seek
+pointer associated with the file is lost;
+on the last close of a
+.Xr socket 2
+associated naming information and queued data are discarded;
+on the last close of a file holding an advisory lock
+the lock is released (see further
+.Xr flock 2 ) .
+.Pp
+When a process exits,
+all associated file descriptors are freed, but since there is
+a limit on active descriptors per processes, the
+.Fn close
+function call
+is useful when a large quantity of file descriptors are being handled.
+.Pp
+When a process forks (see
+.Xr fork 2 ) ,
+all descriptors for the new child process reference the same
+objects as they did in the parent before the fork.
+If a new process is then to be run using
+.Xr execve 2 ,
+the process would normally inherit these descriptors.  Most
+of the descriptors can be rearranged with
+.Xr dup2 2
+or deleted with
+.Fn close
+before the
+.Xr execve
+is attempted, but if some of these descriptors will still
+be needed if the execve fails, it is necessary to arrange for them
+to be closed if the execve succeeds.
+For this reason, the call
+.Dq Li fcntl(d, F_SETFD, 1)
+is provided,
+which arranges that a descriptor will be closed after a successful
+execve; the call
+.Dq Li fcntl(d, F_SETFD, 0)
+restores the default,
+which is to not close the descriptor.
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.
+Otherwise, a value of -1 is returned and the global integer variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Close
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EBADF
+.Fa D
+is not an active descriptor.
+.It Bq Er EINTR
+An interrupt was received.
+.El
+.Sh SEE ALSO
+.Xr accept 2 ,
+.Xr flock 2 ,
+.Xr open 2 ,
+.Xr pipe 2 ,
+.Xr socket 2 ,
+.Xr socketpair 2 ,
+.Xr execve 2 ,
+.Xr fcntl 2
+.Sh STANDARDS
+.Fn Close
+conforms to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
diff --git a/lib/libc/sys/connect.2 b/lib/libc/sys/connect.2
new file mode 100644
index 0000000..eb38ab3
--- /dev/null
+++ b/lib/libc/sys/connect.2
@@ -0,0 +1,147 @@
+.\" Copyright (c) 1983, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)connect.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt CONNECT 2
+.Os BSD 4.2
+.Sh NAME
+.Nm connect
+.Nd initiate a connection on a socket
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/socket.h>
+.Ft int
+.Fn connect "int s" "struct sockaddr *name" "int namelen"
+.Sh DESCRIPTION
+The parameter
+.Fa s
+is a socket.
+If it is of type
+.Dv SOCK_DGRAM ,
+this call specifies the peer with which the socket is to be associated;
+this address is that to which datagrams are to be sent,
+and the only address from which datagrams are to be received.
+If the socket is of type
+.Dv SOCK_STREAM ,
+this call attempts to make a connection to
+another socket.
+The other socket is specified by
+.Fa name ,
+which is an address in the communications space of the socket.
+Each communications space interprets the
+.Fa name
+parameter in its own way.
+Generally, stream sockets may successfully
+.Fn connect
+only once; datagram sockets may use
+.Fn connect
+multiple times to change their association.
+Datagram sockets may dissolve the association
+by connecting to an invalid address, such as a null address.
+.Sh RETURN VALUES
+If the connection or binding succeeds, 0 is returned.
+Otherwise a -1 is returned, and a more specific error
+code is stored in
+.Va errno .
+.Sh ERRORS
+The
+.Fn connect
+call fails if:
+.Bl -tag -width EADDRNOTAVAILABB
+.It Bq Er EBADF
+.Fa S
+is not a valid descriptor.
+.It Bq Er ENOTSOCK
+.Fa S
+is a descriptor for a file, not a socket.
+.It Bq Er EADDRNOTAVAIL
+The specified address is not available on this machine.
+.It Bq Er EAFNOSUPPORT
+Addresses in the specified address family cannot be used with this socket.
+.It Bq Er EISCONN
+The socket is already connected.
+.It Bq Er ETIMEDOUT
+Connection establishment timed out without establishing a connection.
+.It Bq Er ECONNREFUSED
+The attempt to connect was forcefully rejected.
+.It Bq Er ENETUNREACH
+The network isn't reachable from this host.
+.It Bq Er EADDRINUSE
+The address is already in use.
+.It Bq Er EFAULT
+The
+.Fa name
+parameter specifies an area outside
+the process address space.
+.It Bq Er EINPROGRESS
+The socket is non-blocking 
+and the connection cannot
+be completed immediately.
+It is possible to
+.Xr select 2
+for completion by selecting the socket for writing.
+.It Bq Er EALREADY
+The socket is non-blocking
+and a previous connection attempt
+has not yet been completed.
+.El
+.Pp
+The following errors are specific to connecting names in the UNIX domain.
+These errors may not apply in future versions of the UNIX IPC domain.
+.Bl -tag -width EADDRNOTAVAILABB
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named socket does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er EACCES
+Write access to the named socket is denied.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.El
+.Sh SEE ALSO
+.Xr accept 2 ,
+.Xr select 2 ,
+.Xr socket 2 ,
+.Xr getsockname 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/dup.2 b/lib/libc/sys/dup.2
new file mode 100644
index 0000000..8989639
--- /dev/null
+++ b/lib/libc/sys/dup.2
@@ -0,0 +1,132 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)dup.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt DUP 2
+.Os BSD 4
+.Sh NAME
+.Nm dup ,
+.Nm dup2
+.Nd duplicate an existing file descriptor
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn dup "int oldd"
+.Ft int
+.Fn dup2 "int oldd" "int newd"
+.Sh DESCRIPTION
+.Fn Dup
+duplicates an existing object descriptor and returns its value to
+the calling process
+.Fa ( newd
+=
+.Fn dup oldd ) .
+The argument
+.Fa oldd
+is a small non-negative integer index in
+the per-process descriptor table.  The value must be less
+than the size of the table, which is returned by
+.Xr getdtablesize 2 .
+The new descriptor returned by the call
+is the lowest numbered descriptor
+currently not in use by the process.
+.Pp
+The object referenced by the descriptor does not distinguish
+between
+.Fa oldd
+and
+.Fa newd
+in any way.
+Thus if
+.Fa newd
+and
+.Fa oldd
+are duplicate references to an open
+file,
+.Xr read 2 ,
+.Xr write 2
+and
+.Xr lseek 2
+calls all move a single pointer into the file,
+and append mode, non-blocking I/O and asynchronous I/O options
+are shared between the references.
+If a separate pointer into the file is desired, a different
+object reference to the file must be obtained by issuing an
+additional
+.Xr open 2
+call.
+The close-on-exec flag on the new file descriptor is unset.
+.Pp
+In 
+.Fn dup2 ,
+the value of the new descriptor
+.Fa newd
+is specified.  If this descriptor is already
+in use, the descriptor is first deallocated as if a
+.Xr close 2
+call had been done first.
+.Sh RETURN VALUES
+The value -1 is returned if an error occurs in either call.
+The external variable
+.Va errno
+indicates the cause of the error.
+.Sh ERRORS
+.Fn Dup
+and
+.Fn dup2
+fail if:
+.Bl -tag -width Er
+.It Bq Er EBADF
+.Fa Oldd
+or
+.Fa newd
+is not a valid active descriptor
+.It Bq Er EMFILE
+Too many descriptors are active.
+.El
+.Sh SEE ALSO
+.Xr accept 2 ,
+.Xr open 2 ,
+.Xr close 2 ,
+.Xr fcntl 2 ,
+.Xr pipe 2 ,
+.Xr socket 2 ,
+.Xr socketpair 2 ,
+.Xr getdtablesize 2
+.Sh STANDARDS
+.Fn Dup
+and
+.Fn dup2
+are expected to conform
+to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
diff --git a/lib/libc/sys/execve.2 b/lib/libc/sys/execve.2
new file mode 100644
index 0000000..ba47e6d
--- /dev/null
+++ b/lib/libc/sys/execve.2
@@ -0,0 +1,261 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)execve.2	8.3 (Berkeley) 1/24/94
+.\"
+.Dd January 24, 1994
+.Dt EXECVE 2
+.Os BSD 4
+.Sh NAME
+.Nm execve
+.Nd execute a file
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn execve "const char *path" "char *const argv[]" "char *const envp[]"
+.Sh DESCRIPTION
+.Fn Execve
+transforms the calling process into a new process.
+The new process is constructed from an ordinary file,
+whose name is pointed to by
+.Fa path ,
+called the
+.Em new process file .
+This file is either an executable object file,
+or a file of data for an interpreter.
+An executable object file consists of an identifying header,
+followed by pages of data representing the initial program (text)
+and initialized data pages.  Additional pages may be specified
+by the header to be initialized with zero data;  see
+.Xr a.out 5 .
+.Pp
+An interpreter file begins with a line of the form:
+.Pp
+.Bd -filled -offset indent -compact
+.Sy \&#!
+.Em interpreter
+.Bq Em arg
+.Ed
+.Pp
+When an interpreter file is
+.Fn execve Ap d ,
+the system
+.Fn execve Ap s
+runs the specified
+.Em interpreter .
+If the optional
+.Em arg
+is specified, it becomes the first argument to the
+.Em interpreter ,
+and the name of the originally
+.Fn execve Ap d
+file becomes the second argument;
+otherwise, the name of the originally
+.Fn execve Ap d
+file becomes the first argument.  The original arguments are shifted over to
+become the subsequent arguments.  The zeroth argument, normally the name of the
+.Fn execve Ap d
+file, is left unchanged.
+.Pp
+The argument
+.Fa argv
+is a pointer to a null-terminated array of
+character pointers to null-terminated character strings.
+These strings construct the argument list to be made available to the new
+process.  At least one argument must be present in
+the array; by custom, the first element should be
+the name of the executed program (for example, the last component of
+.Fa path ) .
+.Pp
+The argument
+.Fa envp
+is also a pointer to a null-terminated array of
+character pointers to null-terminated strings.
+A pointer to this array is normally stored in the global variable
+.Va environ.
+These strings pass information to the
+new process that is not directly an argument to the command (see
+.Xr environ 7 ) .
+.Pp
+File descriptors open in the calling process image remain open in
+the new process image, except for those for which the close-on-exec
+flag is set (see
+.Xr close 2
+and
+.Xr fcntl 2 ) .
+Descriptors that remain open are unaffected by
+.Fn execve .
+.Pp
+Signals set to be ignored in the calling process are set to be ignored in
+the
+new process. Signals which are set to be caught in the calling process image
+are set to default action in the new process image.
+Blocked signals remain blocked regardless of changes to the signal action.
+The signal stack is reset to be undefined (see
+.Xr sigaction 2
+for more information).
+.Pp
+If the set-user-ID mode bit of the new process image file is set
+(see
+.Xr chmod 2 ) ,
+the effective user ID of the new process image is set to the owner ID
+of the new process image file.
+If the set-group-ID mode bit of the new process image file is set,
+the effective group ID of the new process image is set to the group ID
+of the new process image file.
+(The effective group ID is the first element of the group list.)
+The real user ID, real group ID and
+other group IDs of the new process image remain the same as the calling
+process image.
+After any set-user-ID and set-group-ID processing,
+the effective user ID is recorded as the saved set-user-ID,
+and the effective group ID is recorded as the saved set-group-ID.
+These values may be used in changing the effective IDs later (see
+.Xr setuid 2 ) .
+.Pp
+The new process also inherits the following attributes from
+the calling process:
+.Pp
+.Bl -column parent_process_ID -offset indent -compact
+.It process ID Ta see Xr getpid 2
+.It parent process ID Ta see Xr getppid 2
+.It process group ID Ta see Xr getpgrp 2
+.It access groups Ta see Xr getgroups 2
+.It working directory Ta see Xr chdir 2
+.It root directory Ta see Xr chroot 2
+.It control terminal Ta see Xr termios 4
+.It resource usages Ta see Xr getrusage 2
+.It interval timers Ta see Xr getitimer 2
+.It resource limits Ta see Xr getrlimit 2
+.It file mode mask Ta see Xr umask 2
+.It signal mask Ta see Xr sigvec 2 ,
+.Xr sigsetmask 2
+.El
+.Pp
+When a program is executed as a result of an
+.Fn execve
+call, it is entered as follows:
+.Bd -literal -offset indent
+main(argc, argv, envp)
+int argc;
+char **argv, **envp;
+.Ed
+.Pp
+where
+.Fa argc
+is the number of elements in
+.Fa argv
+(the ``arg count'')
+and
+.Fa argv
+points to the array of character pointers
+to the arguments themselves.
+.Sh RETURN VALUES
+As the
+.Fn execve
+function overlays the current process image 
+with a new process image the successful call
+has no process to return to.
+If
+.Fn execve
+does return to the calling process an error has occurred; the
+return value will be -1 and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Execve
+will fail and return to the calling process if:
+.Bl -tag -width [ENAMETOOLONG]
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The new process file does not exist.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er EACCES
+The new process file is not an ordinary file.
+.It Bq Er EACCES
+The new process file mode denies execute permission.
+.It Bq Er ENOEXEC
+The new process file has the appropriate access
+permission, but has an invalid magic number in its header.
+.It Bq Er ETXTBSY
+The new process file is a pure procedure (shared text)
+file that is currently open for writing or reading by some process.
+.It Bq Er ENOMEM
+The new process requires more virtual memory than
+is allowed by the imposed maximum
+.Pq Xr getrlimit 2 .
+.It Bq Er E2BIG
+The number of bytes in the new process's argument list
+is larger than the system-imposed limit.
+The limit in the system as released is 20480 bytes
+.Pf ( Dv NCARGS
+in
+.Ao Pa sys/param.h Ac .
+.It Bq Er EFAULT
+The new process file is not as long as indicated by
+the size values in its header.
+.It Bq Er EFAULT
+.Fa Path ,
+.Fa argv ,
+or
+.Fa envp
+point
+to an illegal address.
+.It Bq Er EIO
+An I/O error occurred while reading from the file system.
+.El
+.Sh CAVEAT
+If a program is
+.Em setuid
+to a non-super-user, but is executed when
+the real
+.Em uid
+is ``root'', then the program has some of the powers
+of a super-user as well.
+.Sh SEE ALSO
+.Xr exit 2 ,
+.Xr fork 2 ,
+.Xr execl 3 ,
+.Xr environ 7
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/fcntl.2 b/lib/libc/sys/fcntl.2
new file mode 100644
index 0000000..f53c02f
--- /dev/null
+++ b/lib/libc/sys/fcntl.2
@@ -0,0 +1,481 @@
+.\" Copyright (c) 1983, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)fcntl.2	8.2 (Berkeley) 1/12/94
+.\"
+.Dd January 12, 1994
+.Dt FCNTL 2
+.Os BSD 4.2
+.Sh NAME
+.Nm fcntl
+.Nd file control
+.Sh SYNOPSIS
+.Fd #include <fcntl.h>
+.Ft int
+.Fn fcntl "int fd" "int cmd" "int arg"
+.Sh DESCRIPTION
+.Fn Fcntl
+provides for control over descriptors.
+The argument
+.Fa fd
+is a descriptor to be operated on by
+.Fa cmd
+as follows:
+.Bl -tag -width F_GETOWNX
+.It Dv F_DUPFD
+Return a new descriptor as follows:
+.Pp
+.Bl -bullet -compact -offset 4n
+.It
+Lowest numbered available descriptor greater than or equal to
+.Fa arg .
+.It
+Same object references as the original descriptor.
+.It
+New descriptor shares the same file offset if the object
+was a file.
+.It
+Same access mode (read, write or read/write).
+.It
+Same file status flags (i.e., both file descriptors
+share the same file status flags).
+.It
+The close-on-exec flag associated with the new file descriptor
+is set to remain open across
+.Xr execv 2
+system calls.
+.El
+.It Dv F_GETFD
+Get the close-on-exec flag associated with the file descriptor
+.Fa fd .
+If the low-order bit of the returned value is 0,
+the file will remain open across
+.Fn exec ,
+otherwise the file will be closed upon execution of
+.Fn exec
+.Fa ( arg
+is ignored).
+.It Dv F_SETFD
+Set the close-on-exec flag associated with
+.Fa fd
+to the low order bit of
+.Fa arg
+(0 or 1 as above).
+.It Dv F_GETFL
+Get descriptor status flags, as described below
+.Fa ( arg
+is ignored).
+.It Dv F_SETFL
+Set descriptor status flags to
+.Fa arg .
+.It Dv F_GETOWN
+Get the process ID or process group
+currently receiving
+.Dv SIGIO
+and
+.Dv SIGURG
+signals; process groups are returned
+as negative values
+.Fa ( arg
+is ignored).
+.It Dv F_SETOWN
+Set the process or process group
+to receive
+.Dv SIGIO
+and
+.Dv SIGURG
+signals;
+process groups are specified by supplying
+.Fa arg
+as negative, otherwise 
+.Fa arg
+is interpreted as a process ID.
+.El
+.Pp
+The flags for the
+.Dv F_GETFL
+and
+.Dv F_SETFL
+flags are as follows:
+.Bl -tag -width O_NONBLOCKX
+.It Dv O_NONBLOCK
+Non-blocking I/O; if no data is available to a
+.Xr read
+call, or if a
+.Xr write
+operation would block,
+the read or write call returns -1 with the error
+.Er EAGAIN .
+.It Dv O_APPEND
+Force each write to append at the end of file;
+corresponds to the
+.Dv O_APPEND
+flag of
+.Xr open 2 .
+.It Dv O_ASYNC
+Enable the
+.Dv SIGIO
+signal to be sent to the process group
+when I/O is possible, e.g.,
+upon availability of data to be read.
+.El
+.Pp
+Several commands are available for doing advisory file locking;
+they all operate on the following structure:
+.ne 7v
+.Bd -literal
+struct flock {
+	off_t	l_start;	/* starting offset */
+	off_t	l_len;		/* len = 0 means until end of file */
+	pid_t	l_pid;		/* lock owner */
+	short	l_type;		/* lock type: read/write, etc. */
+	short	l_whence;	/* type of l_start */
+};
+.Ed
+The commands available for advisory record locking are as follows:
+.Bl -tag -width F_SETLKWX
+.It Dv F_GETLK
+Get the first lock that blocks the lock description pointed to by the
+third argument,
+.Fa arg ,
+taken as a pointer to a
+.Fa "struct flock"
+(see above).
+The information retrieved overwrites the information passed to
+.Nm fcntl
+in the
+.Fa flock
+structure.
+If no lock is found that would prevent this lock from being created,
+the structure is left unchanged by this function call except for the
+lock type which is set to
+.Dv F_UNLCK .
+.It Dv F_SETLK
+Set or clear a file segment lock according to the lock description
+pointed to by the third argument,
+.Fa arg ,
+taken as a pointer to a
+.Fa "struct flock"
+(see above).
+.Dv F_SETLK
+is used to establish shared (or read) locks
+.Dv (F_RDLCK)
+or exclusive (or write) locks,
+.Dv (F_WRLCK) ,
+as well as remove either type of lock
+.Dv (F_UNLCK) .
+If a shared or exclusive lock cannot be set,
+.Nm fcntl
+returns immediately with
+.Er EACCES .
+.It Dv F_SETLKW
+This command is the same as
+.Dv F_SETLK
+except that if a shared or exclusive lock is blocked by other locks,
+the process waits until the request can be satisfied.
+If a signal that is to be caught is received while
+.Nm fcntl
+is waiting for a region, the
+.Nm fcntl
+will be interrupted if the signal handler has not specified the
+.Dv SA_RESTART
+(see
+.Xr sigaction 2 ) .
+.El
+.Pp
+When a shared lock has been set on a segment of a file,
+other processes can set shared locks on that segment
+or a portion of it.
+A shared lock prevents any other process from setting an exclusive
+lock on any portion of the protected area.
+A request for a shared lock fails if the file descriptor was not
+opened with read access.
+.Pp
+An exclusive lock prevents any other process from setting a shared lock or
+an exclusive lock on any portion of the protected area.
+A request for an exclusive lock fails if the file was not
+opened with write access.
+.Pp
+The value of
+.Fa l_whence
+is
+.Dv SEEK_SET ,
+.Dv SEEK_CUR ,
+or
+.Dv SEEK_END
+to indicate that the relative offset,
+.Fa l_start
+bytes, will be measured from the start of the file,
+current position, or end of the file, respectively.
+The value of
+.Fa l_len
+is the number of consecutive bytes to be locked.
+If
+.Fa l_len
+is negative, the result is undefined.
+The
+.Fa l_pid
+field is only used with
+.Dv F_GETLK
+to return the process ID of the process holding a blocking lock.
+After a successful
+.Dv F_GETLK
+request, the value of
+.Fa l_whence
+is
+.Dv SEEK_SET .
+.Pp
+Locks may start and extend beyond the current end of a file,
+but may not start or extend before the beginning of the file.
+A lock is set to extend to the largest possible value of the
+file offset for that file if
+.Fa l_len
+is set to zero. If
+.Fa l_whence
+and
+.Fa l_start
+point to the beginning of the file, and
+.Fa l_len
+is zero, the entire file is locked.
+If an application wishes only to do entire file locking, the
+.Xr flock 2
+system call is much more efficient.
+.Pp
+There is at most one type of lock set for each byte in the file.
+Before a successful return from an
+.Dv F_SETLK
+or an
+.Dv F_SETLKW
+request when the calling process has previously existing locks
+on bytes in the region specified by the request,
+the previous lock type for each byte in the specified
+region is replaced by the new lock type.
+As specified above under the descriptions
+of shared locks and exclusive locks, an
+.Dv F_SETLK
+or an
+.Dv F_SETLKW
+request fails or blocks respectively when another process has existing
+locks on bytes in the specified region and the type of any of those
+locks conflicts with the type specified in the request.
+.Pp
+This interface follows the completely stupid semantics of System V and
+.St -p1003.1-88
+that require that all locks associated with a file for a given process are
+removed when \fIany\fP file descriptor for that file is closed by that process.
+This semantic means that applications must be aware of any files that
+a subroutine library may access.
+For example if an application for updating the password file locks the
+password file database while making the update, and then calls
+.Xr getpwname 3
+to retrieve a record,
+the lock will be lost because 
+.Xr getpwname 3
+opens, reads, and closes the password database.
+The database close will release all locks that the process has
+associated with the database, even if the library routine never
+requested a lock on the database.
+Another minor semantic problem with this interface is that
+locks are not inherited by a child process created using the
+.Xr fork 2
+function.
+The
+.Xr flock 2
+interface has much more rational last close semantics and
+allows locks to be inherited by child processes.
+.Xr Flock 2
+is recommended for applications that want to ensure the integrity
+of their locks when using library routines or wish to pass locks
+to their children.
+Note that 
+.Xr flock 2
+and 
+.Xr fcntl 2
+locks may be safely used concurrently.
+.Pp
+All locks associated with a file for a given process are
+removed when the process terminates.
+.Pp
+A potential for deadlock occurs if a process controlling a locked region
+is put to sleep by attempting to lock the locked region of another process.
+This implementation detects that sleeping until a locked region is unlocked
+would cause a deadlock and fails with an
+.Er EDEADLK
+error.
+.Sh RETURN VALUES
+Upon successful completion, the value returned depends on
+.Fa cmd
+as follows:
+.Bl -tag -width F_GETOWNX -offset indent
+.It Dv F_DUPFD
+A new file descriptor.
+.It Dv F_GETFD
+Value of flag (only the low-order bit is defined).
+.It Dv F_GETFL
+Value of flags.
+.It Dv F_GETOWN
+Value of file descriptor owner.
+.It other
+Value other than -1.
+.El
+.Pp
+Otherwise, a value of -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Fcntl
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EACCES
+The argument
+.Fa arg
+is
+.Dv F_SETLK ,
+the type of lock
+.Fa (l_type)
+is a shared lock
+.Dv (F_RDLCK)
+or exclusive lock
+.Dv (F_WRLCK) ,
+and the segment of a file to be locked is already
+exclusive-locked by another process;
+or the type is an exclusive lock and some portion of the
+segment of a file to be locked is already shared-locked or
+exclusive-locked by another process.
+.It Bq Er EBADF
+.Fa Fildes
+is not a valid open file descriptor.
+.Pp
+The argument
+.Fa cmd
+is
+.Dv F_SETLK
+or
+.Dv F_SETLKW ,
+the type of lock
+.Fa (l_type)
+is a shared lock
+.Dv (F_RDLCK) ,
+and
+.Fa fildes
+is not a valid file descriptor open for reading.
+.Pp
+The argument
+.Fa cmd
+is
+.Dv F_SETLK
+or
+.Dv F_SETLKW ,
+the type of lock
+.Fa (l_type)
+is an exclusive lock
+.Dv (F_WRLCK) ,
+and
+.Fa fildes
+is not a valid file descriptor open for writing.
+.It Bq Er EMFILE
+.Fa Cmd
+is
+.Dv F_DUPFD
+and the maximum allowed number of file descriptors are currently
+open.
+.It Bq Er EDEADLK
+The argument
+.Fa cmd
+is
+.Dv F_SETLKW ,
+and a deadlock condition was detected.
+.It Bq Er EINTR
+The argument
+.Fa cmd
+is
+.Dv F_SETLKW ,
+and the function was interrupted by a signal.
+.It Bq Er EINVAL
+.Fa Cmd
+is
+.Dv F_DUPFD
+and
+.Fa arg
+is negative or greater than the maximum allowable number
+(see
+.Xr getdtablesize 2 ) .
+.Pp
+The argument
+.Fa cmd
+is
+.Dv F_GETLK ,
+.Dv F_SETLK ,
+or
+.Dv F_SETLKW
+and the data to which
+.Fa arg
+points is not valid, or
+.Fa fildes
+refers to a file that does not support locking.
+.It Bq Er EMFILE
+The argument
+.Fa cmd
+is
+.Dv F_DUPED
+and the maximum number of file descriptors permitted for the
+process are already in use,
+or no file descriptors greater than or equal to
+.Fa arg
+are available.
+.It Bq Er ENOLCK
+The argument
+.Fa cmd
+is
+.Dv F_SETLK
+or
+.Dv F_SETLKW ,
+and satisfying the lock or unlock request would result in the
+number of locked regions in the system exceeding a system-imposed limit.
+.It Bq Er ESRCH
+.Fa Cmd
+is
+.Dv F_SETOWN
+and
+the process ID given as argument is not in use.
+.El
+.Sh SEE ALSO
+.Xr close 2 ,
+.Xr execve 2 ,
+.Xr flock 2 ,
+.Xr getdtablesize 2 ,
+.Xr open 2 ,
+.Xr sigvec 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/flock.2 b/lib/libc/sys/flock.2
new file mode 100644
index 0000000..bb6abb7
--- /dev/null
+++ b/lib/libc/sys/flock.2
@@ -0,0 +1,145 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)flock.2	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt FLOCK 2
+.Os BSD 4.2
+.Sh NAME
+.Nm flock
+.Nd "apply or remove an advisory lock on an open file"
+.Sh SYNOPSIS
+.Fd #include <sys/file.h>
+.Fd #define	LOCK_SH	1	/* shared lock */
+.Fd #define	LOCK_EX	2	/* exclusive lock */
+.Fd #define	LOCK_NB	4	/* don't block when locking */
+.Fd #define	LOCK_UN	8	/* unlock */
+.Ft int
+.Fn flock "int fd" "int operation"
+.Sh DESCRIPTION
+.Fn Flock
+applies or removes an
+.Em advisory
+lock on the file associated with the file descriptor
+.Fa fd .
+A lock is applied by specifying an
+.Fa operation
+parameter that is one of
+.Dv LOCK_SH
+or
+.Dv LOCK_EX
+with the optional addition of
+.Dv LOCK_NB .
+To unlock
+an existing lock
+.Dv operation
+should be
+.Dv LOCK_UN .
+.Pp
+Advisory locks allow cooperating processes to perform
+consistent operations on files, but do not guarantee
+consistency (i.e., processes may still access files
+without using advisory locks possibly resulting in
+inconsistencies).
+.Pp
+The locking mechanism allows two types of locks:
+.Em shared
+locks and
+.Em exclusive
+locks.
+At any time multiple shared locks may be applied to a file,
+but at no time are multiple exclusive, or both shared and exclusive,
+locks allowed simultaneously on a file.  
+.Pp
+A shared lock may be
+.Em upgraded
+to an exclusive lock, and vice versa, simply by specifying
+the appropriate lock type; this results in the previous
+lock being released and the new lock applied (possibly
+after other processes have gained and released the lock).
+.Pp
+Requesting a lock on an object that is already locked
+normally causes the caller to be blocked until the lock may be
+acquired.  If
+.Dv LOCK_NB
+is included in
+.Fa operation ,
+then this will not happen; instead the call will fail and
+the error
+.Er EWOULDBLOCK
+will be returned.
+.Sh NOTES
+Locks are on files, not file descriptors.  That is, file descriptors
+duplicated through
+.Xr dup 2
+or
+.Xr fork 2
+do not result in multiple instances of a lock, but rather multiple
+references to a single lock.  If a process holding a lock on a file
+forks and the child explicitly unlocks the file, the parent will
+lose its lock.
+.Pp
+Processes blocked awaiting a lock may be awakened by signals.
+.Sh RETURN VALUES
+Zero is returned if the operation was successful;
+on an error a -1 is returned and an error code is left in
+the global location
+.Va errno .
+.Sh ERRORS
+The
+.Fn flock
+call fails if:
+.Bl -tag -width EWOULDBLOCKAA
+.It Bq Er EWOULDBLOCK
+The file is locked and the
+.Dv LOCK_NB
+option was specified.
+.It Bq Er EBADF
+The argument
+.Fa fd
+is an invalid descriptor.
+.It Bq Er EINVAL
+The argument
+.Fa fd
+refers to an object other than a file.
+.El
+.Sh SEE ALSO
+.Xr open 2 ,
+.Xr close 2 ,
+.Xr dup 2 ,
+.Xr execve 2 ,
+.Xr fork 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/fork.2 b/lib/libc/sys/fork.2
new file mode 100644
index 0000000..0c290f6
--- /dev/null
+++ b/lib/libc/sys/fork.2
@@ -0,0 +1,108 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)fork.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt FORK 2
+.Os BSD 4
+.Sh NAME
+.Nm fork
+.Nd create a new process
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft pid_t
+.Fn fork void
+.Sh DESCRIPTION
+.Fn Fork
+causes creation of a new process.
+The new process (child process) is an exact copy of the
+calling process (parent process) except for the following:
+.Bl -bullet -offset indent
+.It
+The child process has a unique process ID.
+.It
+The child process has a different parent
+process ID (i.e., the process ID of the parent process).
+.It
+The child process has its own copy of the parent's descriptors.
+These descriptors reference the same underlying objects, so that,
+for instance, file pointers in file objects are shared between
+the child and the parent, so that an
+.Xr lseek 2
+on a descriptor in the child process can affect a subsequent
+.Xr read
+or
+.Xr write
+by the parent.
+This descriptor copying is also used by the shell to
+establish standard input and output for newly created processes
+as well as to set up pipes.
+.It
+The child processes resource utilizations
+are set to 0; see
+.Xr setrlimit 2 .
+.El
+.Sh RETURN VALUES
+Upon successful completion,
+.Fn fork
+returns a value
+of 0 to the child process and returns the process ID of the child
+process to the parent process.  Otherwise, a value of -1 is returned
+to the parent process, no child process is created, and the global
+variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Fork
+will fail and no child process will be created if:
+.Bl -tag -width [EAGAIN]
+.It Bq Er EAGAIN
+The system-imposed limit on the total
+number of processes under execution would be exceeded.
+This limit is configuration-dependent.
+.It Bq Er EAGAIN
+The system-imposed limit
+.Dv MAXUPRC
+.Pq Aq Pa sys/param.h
+on the total number of
+processes under execution by a single user would be exceeded.
+.It Bq Er ENOMEM
+There is insufficient swap space for the new process.
+.El
+.Sh SEE ALSO
+.Xr execve 2 ,
+.Xr wait 2
+.Sh HISTORY
+A
+.Fn fork 2
+function call appeared in
+.At v6 .
diff --git a/lib/libc/sys/fsync.2 b/lib/libc/sys/fsync.2
new file mode 100644
index 0000000..234ea6e
--- /dev/null
+++ b/lib/libc/sys/fsync.2
@@ -0,0 +1,81 @@
+.\" Copyright (c) 1983, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)fsync.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt FSYNC 2
+.Os BSD 4.2
+.Sh NAME
+.Nm fsync
+.Nd "synchronize a file's in-core state with that on disk"
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn fsync "int fd"
+.Sh DESCRIPTION
+.Fn Fsync
+causes all modified data and attributes of
+.Fa fd
+to be moved to a permanent storage device.
+This normally results in all in-core modified copies
+of buffers for the associated file to be written to a disk.
+.Pp
+.Fn Fsync
+should be used by programs that require a file to be
+in a known state, for example, in building a simple transaction
+facility.
+.Sh RETURN VALUES
+A 0 value is returned on success.  A -1 value indicates
+an error.
+.Sh ERRORS
+The
+.Fn fsync
+fails if:
+.Bl -tag -width Er
+.It Bq Er EBADF
+.Fa Fd
+is not a valid descriptor.
+.It Bq Er EINVAL
+.Fa Fd
+refers to a socket, not to a file.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.El
+.Sh SEE ALSO
+.Xr sync 2 ,
+.Xr sync 8 ,
+.Xr update 8
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/ftruncate.c b/lib/libc/sys/ftruncate.c
new file mode 100644
index 0000000..2f3ae6d
--- /dev/null
+++ b/lib/libc/sys/ftruncate.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ftruncate.c	8.1 (Berkeley) 6/17/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/syscall.h>
+
+/*
+ * This function provides 64-bit offset padding that
+ * is not supplied by GCC 1.X but is supplied by GCC 2.X.
+ */
+int
+ftruncate(fd, length)
+	int	fd;
+	off_t	length;
+{
+
+	return(__syscall((quad_t)SYS_ftruncate, fd, 0, length));
+}
diff --git a/lib/libc/sys/getdirentries.2 b/lib/libc/sys/getdirentries.2
new file mode 100644
index 0000000..6df9444
--- /dev/null
+++ b/lib/libc/sys/getdirentries.2
@@ -0,0 +1,152 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)getdirentries.2	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt GETDIRENTRIES 2
+.Os
+.Sh NAME
+.Nm getdirentries
+.Nd "get directory entries in a filesystem independent format"
+.Sh SYNOPSIS
+.Fd #include <sys/dirent.h>
+.Ft int
+.Fn getdirentries "int fd" "char *buf" "int nbytes" "long *basep"
+.Sh DESCRIPTION
+.Fn Getdirentries
+reads directory entries from the directory
+referenced by the file descriptor
+.Fa fd
+into the buffer pointed to by
+.Fa buf ,
+in a filesystem independent format.
+Up to
+.Fa nbytes
+of data will be transferred.
+.Fa Nbytes
+must be greater than or equal to the
+block size associated with the file,
+see
+.Xr stat 2 .
+Some filesystems may not support
+.Fn getdirentries
+with buffers smaller than this size.
+.Pp
+The data in the buffer is a series of
+.Em dirent
+structures each containing the following entries:
+.Bd -literal -offset indent
+unsigned long	d_fileno;
+unsigned short	d_reclen;
+unsigned short	d_namlen;
+char    	d_name[MAXNAMELEN + 1]; /* see below */
+.Ed
+.Pp
+The
+.Fa d_fileno
+entry is a number which is unique for each
+distinct file in the filesystem.
+Files that are linked by hard links (see
+.Xr link 2 )
+have the same
+.Fa d_fileno .
+The
+.Fa d_reclen
+entry is the length, in bytes, of the directory record.
+The
+.Fa d_name
+entry contains a null terminated file name.
+The
+.Fa d_namlen
+entry specifies the length of the file name excluding the null byte.
+Thus the actual size of
+.Fa d_name
+may vary from 1 to
+.Dv MAXNAMELEN
+\&+ 1.
+.Pp
+Entries may be separated by extra space.
+The
+.Fa d_reclen
+entry may be used as an offset from the start of a
+.Fa dirent
+structure to the next structure, if any.
+.Pp
+The actual number of bytes transferred is returned.
+The current position pointer associated with
+.Fa fd
+is set to point to the next block of entries.
+The pointer may not advance by the number of bytes returned by
+.Fn getdirentries .
+A value of zero is returned when
+the end of the directory has been reached.
+.Pp
+.Fn Getdirentries
+writes the position of the block read into the location pointed to by
+.Fa basep .
+Alternatively, the current position pointer may be set and retrieved by
+.Xr lseek 2 .
+The current position pointer should only be set to a value returned by
+.Xr lseek 2 ,
+a value returned in the location pointed to by
+.Fa basep ,
+or zero.
+.Sh RETURN VALUES
+If successful, the number of bytes actually transferred is returned.
+Otherwise, -1 is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Getdirentries
+will fail if:
+.Bl -tag -width [EFAULT]
+.It EBADF
+.Fa fd
+is not a valid file descriptor open for reading.
+.It EFAULT
+Either
+.Fa buf
+or
+.Fa basep
+point outside the allocated address space.
+.It EIO
+An
+.Tn I/O
+error occurred while reading from or writing to the file system.
+.El
+.Sh SEE ALSO
+.Xr open 2 ,
+.Xr lseek 2
+.Sh HISTORY
+The
+.Nm getdirentries
+function first appeared in 4.4BSD.
diff --git a/lib/libc/sys/getdtablesize.2 b/lib/libc/sys/getdtablesize.2
new file mode 100644
index 0000000..8251fec
--- /dev/null
+++ b/lib/libc/sys/getdtablesize.2
@@ -0,0 +1,60 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getdtablesize.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETDTABLESIZE 2
+.Os BSD 4.2
+.Sh NAME
+.Nm getdtablesize
+.Nd get descriptor table size
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn getdtablesize void
+.Sh DESCRIPTION
+Each process has a fixed size descriptor table,
+which is guaranteed to have at least 20 slots.  The entries in
+the descriptor table are numbered with small integers starting at 0.
+The call
+.Fn getdtablesize
+returns the size of this table.
+.Sh SEE ALSO
+.Xr close 2 ,
+.Xr dup 2 ,
+.Xr open 2 ,
+.Xr select 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/getfh.2 b/lib/libc/sys/getfh.2
new file mode 100644
index 0000000..ab73d5a
--- /dev/null
+++ b/lib/libc/sys/getfh.2
@@ -0,0 +1,96 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)getfh.2	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt GETFH 2
+.Os
+.Sh NAME
+.Nm getfh
+.Nd get file handle
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/mount.h>
+.Ft int
+.Fn getfh "char *path" "fhandle_t *fhp"
+.Sh DESCRIPTION
+.Fn Getfh
+returns a file handle for the specified file or directory
+in the file handle pointed to by
+.Fa fhp .
+This system call is restricted to the superuser.
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.
+Otherwise, -1 is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Getfh
+fails if one or more of the following are true:
+.Bl -tag -width Er
+.It Bq ENOTDIR
+A component of the path prefix of
+.Fa path
+is not a directory.
+.It Bq EINVAL
+.Fa path
+contains a character with the high-order bit set.
+.It Bq ENAMETOOLONG
+The length of a component of
+.Fa path
+exceeds 255 characters,
+or the length of
+.Fa path
+exceeds 1023 characters.
+.It Bq ENOENT
+The file referred to by
+.Fa path
+does not exist.
+.It Bq EACCES
+Search permission is denied for a component of the path prefix of
+.Fa path .
+.It Bq ELOOP
+Too many symbolic links were encountered in translating
+.Fa path .
+.It Bq EFAULT
+.Fa Fhp
+points to an invalid address.
+.It Bq EIO
+An
+.Tn I/O
+error occurred while reading from or writing to the file system.
+.El
+.Sh HISTORY
+The
+.Nm getfh
+function
+first appeared in 4.4BSD.
diff --git a/lib/libc/sys/getfsstat.2 b/lib/libc/sys/getfsstat.2
new file mode 100644
index 0000000..9d2a0d7
--- /dev/null
+++ b/lib/libc/sys/getfsstat.2
@@ -0,0 +1,135 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)getfsstat.2	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt GETFSSTAT 2
+.Os
+.Sh NAME
+.Nm getfsstat
+.Nd get list of all mounted filesystems
+.Sh SYNOPSIS
+.Fd #include <sys/param.h>
+.Fd #include <sys/ucred.h>
+.Fd #include <sys/mount.h>
+.Ft int
+.Fn getfsstat "struct statfs *buf" "long bufsize" "int flags"
+.Sh DESCRIPTION
+.Fn Getfsstat
+returns information about all mounted filesystems.
+.Fa Buf
+is a pointer to
+.Xr statfs
+structures defined as follows:
+.Bd -literal
+typedef quad fsid_t;
+
+#define MNAMELEN 32	/* length of buffer for returned name */
+
+struct statfs {
+    short   f_type;	/* type of filesystem (see below) */
+    short   f_flags;	/* copy of mount flags */
+    long    f_bsize;	/* fundamental filesystem block size */
+    long    f_iosize;	/* optimal transfer block size */
+    long    f_blocks;	/* total data blocks in filesystem */
+    long    f_bfree;	/* free blocks in fs */
+    long    f_bavail;	/* free blocks avail to non-superuser */
+    long    f_files;	/* total file nodes in filesystem */
+    long    f_ffree;	/* free file nodes in fs */
+    fsid_t  f_fsid;	/* filesystem id */
+    long    f_spare[6];	/* spare for later */
+    char    f_mntonname[MNAMELEN]; /* directory on which mounted */
+    char    f_mntfromname[MNAMELEN]; /* mounted filesystem */
+};
+/*
+ * File system types.
+ */
+#define	MOUNT_UFS	1
+#define	MOUNT_NFS	2
+#define	MOUNT_PC	3
+.Ed
+.Pp
+Fields that are undefined for a particular filesystem are set to -1.
+The buffer is filled with an array of
+.Fa fsstat
+structures, one for each mounted filesystem
+up to the size specified by
+.Fa bufsize .
+.Pp
+If
+.Fa buf
+is given as NULL,
+.Fn getfsstat
+returns just the number of mounted filesystems.
+.Pp
+Normally
+.Fa flags
+should be specified as
+.Dv MNT_WAIT .
+If
+.Fa flags
+is set to
+.Dv MNT_NOWAIT ,
+.Fn getfsstat
+will return the information it has available without requesting
+an update from each filesystem.
+Thus, some of the information will be out of date, but
+.Fn getfsstat
+will not block waiting for information from a filesystem that is
+unable to respond.
+.Sh RETURN VALUES
+Upon successful completion, the number of 
+.Fa fsstat
+structures is returned.
+Otherwise, -1 is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Getfsstat
+fails if one or more of the following are true:
+.Bl -tag -width Er
+.It EFAULT
+.Fa Buf
+points to an invalid address.
+.It EIO
+An
+.Tn I/O
+error occurred while reading from or writing to the filesystem.
+.El
+.Sh SEE ALSO
+.Xr statfs 2 ,
+.Xr fstab 5 ,
+.Xr mount 8
+.Sh HISTORY
+The
+.Nm getfsstat
+function first appeared in 4.4BSD.
diff --git a/lib/libc/sys/getgid.2 b/lib/libc/sys/getgid.2
new file mode 100644
index 0000000..52519d7
--- /dev/null
+++ b/lib/libc/sys/getgid.2
@@ -0,0 +1,79 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getgid.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETGID 2
+.Os BSD 4.2
+.Sh NAME
+.Nm getgid ,
+.Nm getegid
+.Nd get group process identification
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Ft gid_t
+.Fn getgid void
+.Ft gid_t
+.Fn getegid void
+.Sh DESCRIPTION
+The
+.Fn getgid
+function returns the real group ID of the calling process,
+.Fn getegid
+returns the effective group ID of the calling process.
+.Pp
+The real group ID is specified at login time.
+.Pp
+The real group ID is the group of the user who invoked the program.
+As the effective group ID gives the process additional permissions
+during the execution of
+.Dq Em set-group-ID
+mode processes,
+.Fn getgid
+is used to determine the real-user-id of the calling process.
+.Sh ERRORS
+The
+.Fn getgid
+and
+.Fn getegid
+functions are always successful, and no return value is reserved to
+indicate an error.
+.Sh SEE ALSO
+.Xr getuid 2 ,
+.Xr setregid 2 ,
+.Xr setgid 3
+.Sh STANDARDS
+.Fn Getgid
+and
+.Fn getegid
+conform to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
diff --git a/lib/libc/sys/getgroups.2 b/lib/libc/sys/getgroups.2
new file mode 100644
index 0000000..1428d83
--- /dev/null
+++ b/lib/libc/sys/getgroups.2
@@ -0,0 +1,90 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getgroups.2	8.2 (Berkeley) 4/16/94
+.\"
+.Dd April 16, 1994
+.Dt GETGROUPS 2
+.Os BSD 4.2
+.Sh NAME
+.Nm getgroups
+.Nd get group access list
+.Sh SYNOPSIS
+.Fd #include <sys/param.h>
+.Fd #include <unistd.h>
+.Ft int
+.Fn getgroups "int gidsetlen" "gid_t *gidset"
+.Sh DESCRIPTION
+.Fn Getgroups
+gets the current group access list of the user process
+and stores it in the array 
+.Fa gidset .
+The parameter
+.Fa gidsetlen
+indicates the number of entries that may be placed in 
+.Fa gidset .
+.Fn Getgroups
+returns the actual number of groups returned in
+.Fa gidset .
+No more than
+.Dv NGROUPS ,
+as defined in
+.Aq Pa sys/param.h ,
+will ever
+be returned.
+.Sh RETURN VALUES
+A successful call returns the number of groups in the group set.
+A value of -1 indicates that an error occurred, and the error
+code is stored in the global variable
+.Va errno .
+.Sh ERRORS
+The possible errors for
+.Fn getgroups
+are:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The argument
+.Fa gidsetlen
+is smaller than the number of groups in the group set.
+.It Bq Er EFAULT
+The argument
+.Fa gidset
+specifies
+an invalid address.
+.El
+.Sh SEE ALSO
+.Xr setgroups 2 ,
+.Xr initgroups 3
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/getitimer.2 b/lib/libc/sys/getitimer.2
new file mode 100644
index 0000000..ac2e59a
--- /dev/null
+++ b/lib/libc/sys/getitimer.2
@@ -0,0 +1,166 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getitimer.2	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt GETITIMER 2
+.Os BSD 4.2
+.Sh NAME
+.Nm getitimer ,
+.Nm setitimer
+.Nd get/set value of interval timer
+.Sh SYNOPSIS
+.Fd #include <sys/time.h>
+.Fd #define ITIMER_REAL		0
+.Fd #define ITIMER_VIRTUAL	1
+.Fd #define ITIMER_PROF		2
+.Ft int
+.Fn getitimer "int which" "struct itimerval *value"
+.Ft int
+.Fn setitimer "int which" "struct itimerval *value" "struct itimerval *ovalue"
+.Sh DESCRIPTION
+The system provides each process with three interval timers,
+defined in
+.Ao Pa sys/time.h Ac .
+The
+.Fn getitimer
+call returns the current value for the timer specified in
+.Fa which
+in the structure at
+.Fa value .
+The
+.Fn setitimer
+call sets a timer to the specified
+.Fa value
+(returning the previous value of the timer if
+.Fa ovalue
+is non-nil).
+.Pp
+A timer value is defined by the 
+.Fa itimerval
+structure:
+.Bd -literal -offset indent
+struct itimerval {
+	struct	timeval it_interval;	/* timer interval */
+	struct	timeval it_value;	/* current value */
+};
+.Ed
+.Pp
+If
+.Fa it_value
+is non-zero, it indicates the time to the next timer expiration. 
+If
+.Fa it_interval
+is non-zero, it specifies a value to be used in reloading 
+.Fa it_value
+when the timer expires.
+Setting 
+.Fa it_value
+to 0 disables a timer.  Setting 
+.Fa it_interval
+to 0 causes a timer to be disabled after its next expiration (assuming
+.Fa it_value
+is non-zero).
+.Pp
+Time values smaller than the resolution of the
+system clock are rounded up to this resolution
+(typically 10 milliseconds).
+.Pp
+The
+.Dv ITIMER_REAL
+timer decrements in real time.  A
+.Dv SIGALRM
+signal is
+delivered when this timer expires.
+.Pp
+The
+.Dv ITIMER_VIRTUAL
+timer decrements in process virtual time.
+It runs only when the process is executing.  A
+.Dv SIGVTALRM
+signal
+is delivered when it expires.
+.Pp
+The
+.Dv ITIMER_PROF
+timer decrements both in process virtual time and
+when the system is running on behalf of the process.  It is designed
+to be used by interpreters in statistically profiling the execution
+of interpreted programs.
+Each time the
+.Dv ITIMER_PROF
+timer expires, the
+.Dv SIGPROF
+signal is
+delivered.  Because this signal may interrupt in-progress
+system calls, programs using this timer must be prepared to
+restart interrupted system calls.
+.Sh NOTES
+Three macros for manipulating time values are defined in
+.Ao Pa sys/time.h Ac .
+.Fa Timerclear
+sets a time value to zero,
+.Fa timerisset
+tests if a time value is non-zero, and
+.Fa timercmp
+compares two time values (beware that >= and <= do not
+work with this macro).
+.Sh RETURN VALUES
+If the calls succeed, a value of 0 is returned.  If an error occurs,
+the value -1 is returned, and a more precise error code is placed
+in the global variable
+.Va errno .
+.Sh ERRORS
+.Fn Getitimer
+and
+.Fn setitimer
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EFAULT
+The
+.Fa value
+parameter specified a bad address.
+.It Bq Er EINVAL
+A
+.Fa value
+parameter specified a time that was too large
+to be handled.
+.El
+.Sh SEE ALSO
+.Xr select 2 ,
+.Xr sigvec 2 ,
+.Xr gettimeofday 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/getlogin.2 b/lib/libc/sys/getlogin.2
new file mode 100644
index 0000000..5b351ca
--- /dev/null
+++ b/lib/libc/sys/getlogin.2
@@ -0,0 +1,126 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)getlogin.2	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt GETLOGIN 2
+.Os BSD 4.2
+.Sh NAME
+.Nm getlogin ,
+.Nm setlogin
+.Nd get/set login name
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft char *
+.Fn getlogin void
+.Ft int
+.Fn setlogin "const char *name"
+.Sh DESCRIPTION
+The
+.Fn getlogin
+routine
+returns the login name of the user associated with the current session,
+as previously set by
+.Fn setlogin .
+The name is normally associated with a login shell
+at the time a session is created,
+and is inherited by all processes descended from the login shell.
+(This is true even if some of those processes assume another user ID,
+for example when
+.Xr su 1
+is used.)
+.Pp
+.Fn Setlogin
+sets the login name of the user associated with the current session to
+.Fa name .
+This call is restricted to the super-user, and
+is normally used only when a new session is being created on behalf
+of the named user
+(for example, at login time, or when a remote shell is invoked).
+.Sh RETURN VALUES
+If a call to
+.Fn getlogin
+succeeds, it returns a pointer to a null-terminated string in a static buffer.
+If the name has not been set, it returns
+.Dv NULL .
+If a call to
+.Fn setlogin
+succeeds, a value of 0 is returned.  If
+.Fn setlogin
+fails, a value of -1 is returned and an error code is
+placed in the global location
+.Va errno .
+.Sh ERRORS
+The following errors may be returned by these calls:
+.Bl -tag -width Er
+.It Bq Er EFAULT
+The
+.Fa name
+parameter gave an
+invalid address.
+.It Bq Er EINVAL
+The
+.Fa name
+parameter
+pointed to a string that was too long.
+Login names are limited to
+.Dv MAXLOGNAME
+(from
+.Ao Pa sys/param.h Ac )
+characters, currently 12.
+.It Bq Er EPERM
+The caller tried to set the login name and was not the super-user.
+.El
+.Sh SEE ALSO
+.Xr setsid 2
+.Sh BUGS
+Login names are limited in length by
+.Fn setlogin .
+However, lower limits are placed on login names elsewhere in the system
+.Pf ( Dv UT_NAMESIZE
+in
+.Ao Pa utmp.h Ac ) .
+.Pp
+In earlier versions of the system,
+.Fn getlogin
+failed unless the process was associated with a login terminal.
+The current implementation (using
+.Fn setlogin )
+allows getlogin to succeed even when the process has no controlling terminal.
+In earlier versions of the system, the value returned by
+.Fn getlogin
+could not be trusted without checking the user ID.
+Portable programs should probably still make this check.
+.Sh HISTORY
+The
+.Fn getlogin
+function first appeared in 4.4BSD.
diff --git a/lib/libc/sys/getpeername.2 b/lib/libc/sys/getpeername.2
new file mode 100644
index 0000000..d89488c
--- /dev/null
+++ b/lib/libc/sys/getpeername.2
@@ -0,0 +1,89 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getpeername.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETPEERNAME 2
+.Os BSD 4.2
+.Sh NAME
+.Nm getpeername
+.Nd get name of connected peer
+.Sh SYNOPSIS
+.Ft int
+.Fn getpeername "int s" "struct sockaddr *name" "int *namelen"
+.Sh DESCRIPTION
+.Fn Getpeername
+returns the name of the peer connected to
+socket
+.Fa s .
+The
+.Fa namelen
+parameter should be initialized to indicate
+the amount of space pointed to by
+.Fa name .
+On return it contains the actual size of the name
+returned (in bytes).
+The name is truncated if the buffer provided is too small.
+.Sh DIAGNOSTICS
+A 0 is returned if the call succeeds, -1 if it fails.
+.Sh ERRORS
+The call succeeds unless:
+.Bl -tag -width ENOTSOCKAA
+.It Bq Er EBADF
+The argument
+.Fa s
+is not a valid descriptor.
+.It Bq Er ENOTSOCK
+The argument
+.Fa s
+is a file, not a socket.
+.It Bq Er ENOTCONN
+The socket is not connected.
+.It Bq Er ENOBUFS
+Insufficient resources were available in the system
+to perform the operation.
+.It Bq Er EFAULT
+The 
+.Fa name
+parameter points to memory not in a valid part of the
+process address space.
+.El
+.Sh SEE ALSO
+.Xr accept 2 ,
+.Xr bind 2 ,
+.Xr socket 2 ,
+.Xr getsockname 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/getpgrp.2 b/lib/libc/sys/getpgrp.2
new file mode 100644
index 0000000..88812b7
--- /dev/null
+++ b/lib/libc/sys/getpgrp.2
@@ -0,0 +1,101 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getpgrp.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETPGRP 2
+.Os BSD 4.2
+.Sh NAME
+.Nm getpgrp
+.Nd get process group
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft pid_t
+.Fn getpgrp "void"
+.Sh DESCRIPTION
+The process group of the current process is returned by
+.Fn getpgrp .
+.Pp
+Process groups are used for distribution of signals, and
+by terminals to arbitrate requests for their input: processes
+that have the same process group as the terminal are foreground
+and may read, while others will block with a signal if they attempt
+to read.
+.Pp
+This call is thus used by programs such as
+.Xr csh 1
+to create
+process groups
+in implementing job control.
+The
+.Fn tcgetpgrp
+and
+.Fn tcsetpgrp
+calls
+are used to get/set the process group of the control terminal.
+.Sh SEE ALSO
+.Xr setpgid 2 ,
+.Xr termios 4
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.0 .
+.Sh STANDARDS
+The
+.Fn getpgrp
+function conforms to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
+.Sh COMPATABILITY
+This version of
+.Fn getpgrp
+differs from past Berkeley versions by not taking a
+.Fa "pid_t pid"
+argument.
+This incompatibility is required by
+.St -p1003.1-88 .
+.Pp
+From the
+.St -p1003.1-88
+Rationale:
+.sp
+4.3BSD provides a
+.Fn getpgrp
+function that returns the process group ID for a specified process.
+Although this function is used to support job control, all known
+job-control shells always specify the calling process with this
+function.
+Thus, the simpler System V
+.Fn getpgrp
+suffices, and the added complexity of the 4.3BSD
+.Fn getpgrp
+has been omitted from POSIX.1.
diff --git a/lib/libc/sys/getpid.2 b/lib/libc/sys/getpid.2
new file mode 100644
index 0000000..5f77706
--- /dev/null
+++ b/lib/libc/sys/getpid.2
@@ -0,0 +1,72 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getpid.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETPID 2
+.Os BSD 4
+.Sh NAME
+.Nm getpid ,
+.Nm getppid
+.Nd get parent or calling process identification
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft pid_t
+.Fn getpid void
+.Ft pid_t
+.Fn getppid void
+.Sh DESCRIPTION
+.Fn Getpid
+returns
+the process ID of
+the calling process.
+The ID is guaranteed to be unique and is
+useful for constructing temporary file names.
+.Pp
+.Fn Getppid
+returns the process ID of the parent
+of the calling process. 
+.Sh ERRORS
+The
+.Fn getpid
+and
+.Fn getppid
+functions are always successful, and no return value is reserved to
+indicate an error.
+.Sh SEE ALSO
+.Xr gethostid 2
+.Sh STANDARDS
+.Fn Getpid
+and
+.Fn getppid
+conform to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
diff --git a/lib/libc/sys/getpriority.2 b/lib/libc/sys/getpriority.2
new file mode 100644
index 0000000..aa151a0
--- /dev/null
+++ b/lib/libc/sys/getpriority.2
@@ -0,0 +1,142 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getpriority.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETPRIORITY 2
+.Os BSD 4
+.Sh NAME
+.Nm getpriority ,
+.Nm setpriority
+.Nd get/set program scheduling priority
+.Sh SYNOPSIS
+.Fd #include <sys/time.h>
+.Fd #include <sys/resource.h>
+.Ft int
+.Fn getpriority "int which" "int who"
+.Ft int
+.Fn setpriority "int which" "int who" "int prio"
+.Sh DESCRIPTION
+The scheduling
+priority of the process, process group, or user, as indicated by
+.Fa which
+and
+.Fa who
+is obtained with the
+.Fn getpriority
+call and set with the
+.Fn setpriority
+call.
+.Fa Which
+is one of
+.Dv PRIO_PROCESS ,
+.Dv PRIO_PGRP ,
+or
+.Dv PRIO_USER ,
+and 
+.Fa who
+is interpreted relative to 
+.Fa which
+(a process identifier for
+.Dv PRIO_PROCESS ,
+process group
+identifier for
+.Dv PRIO_PGRP ,
+and a user ID for
+.Dv PRIO_USER ) .
+A zero value of
+.Fa who
+denotes the current process, process group, or user.
+.Fa Prio
+is a value in the range -20 to 20.  The default priority is 0;
+lower priorities cause more favorable scheduling.
+.Pp
+The
+.Fn getpriority
+call returns the highest priority (lowest numerical value)
+enjoyed by any of the specified processes.  The
+.Fn setpriority
+call sets the priorities of all of the specified processes
+to the specified value.  Only the super-user may lower priorities.
+.Sh RETURN VALUES
+Since
+.Fn getpriority
+can legitimately return the value -1, it is necessary
+to clear the external variable
+.Va errno
+prior to the
+call, then check it afterward to determine
+if a -1 is an error or a legitimate value.
+The
+.Fn setpriority
+call returns 0 if there is no error, or
+-1 if there is.
+.Sh ERRORS
+.Fn Getpriority
+and
+.Fn setpriority
+will fail if:
+.Bl -tag -width Er
+.It Bq Er ESRCH
+No process was located using the 
+.Fa which
+and
+.Fa who
+values specified.
+.It Bq Er EINVAL
+.Fa Which
+was not one of
+.Dv PRIO_PROCESS ,
+.Dv PRIO_PGRP ,
+or
+.Dv PRIO_USER .
+.El
+.Pp
+.Bl -tag -width Er
+In addition to the errors indicated above,
+.Fn setpriority
+will fail if:
+.It Bq Er EPERM
+A process was located, but neither its effective nor real user
+ID matched the effective user ID of the caller.
+.It Bq Er EACCES
+A non super-user attempted to lower a process priority.
+.El
+.Sh SEE ALSO
+.Xr nice 1 ,
+.Xr fork 2 ,
+.Xr renice 8
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/getrlimit.2 b/lib/libc/sys/getrlimit.2
new file mode 100644
index 0000000..4ef3258
--- /dev/null
+++ b/lib/libc/sys/getrlimit.2
@@ -0,0 +1,182 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getrlimit.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETRLIMIT 2
+.Os BSD 4
+.Sh NAME
+.Nm getrlimit ,
+.Nm setrlimit
+.Nd control maximum system resource consumption
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/time.h>
+.Fd #include <sys/resource.h>
+.Ft int
+.Fn getrlimit "int resource" "struct rlimit *rlp"
+.Ft int
+.Fn setrlimit "int resource" "struct rlimit *rlp"
+.Sh DESCRIPTION
+Limits on the consumption of system resources by the current process
+and each process it creates may be obtained with the
+.Fn getrlimit
+call, and set with the
+.Fn setrlimit
+call.  
+.Pp
+The
+.Fa resource
+parameter is one of the following:
+.Bl -tag -width RLIMIT_FSIZEAA
+.It Li RLIMIT_CORE
+The largest size (in bytes)
+.Xr core
+file that may be created.
+.It Li RLIMIT_CPU
+The maximum amount of cpu time (in seconds) to be used by
+each process.
+.It Li RLIMIT_DATA
+The maximum size (in bytes) of the data segment for a process;
+this defines how far a program may extend its break with the
+.Xr sbrk 2
+system call.
+.It Li RLIMIT_FSIZE
+The largest size (in bytes) file that may be created.
+.It Li RLIMIT_MEMLOCK
+The maximum size (in bytes) which a process may lock into memory
+using the
+.Xr mlock 2
+function.
+.It Li RLIMIT_NOFILE
+The maximum number of open files for this process.
+.It Li RLIMIT_NPROC
+The maximum number of simultaneous processes for this user id.
+.It Li RLIMIT_RSS
+The maximum size (in bytes) to which a process's resident set size may
+grow.
+This imposes a limit on the amount of physical memory to be given to
+a process; if memory is tight, the system will prefer to take memory
+from processes that are exceeding their declared resident set size.
+.It Li RLIMIT_STACK
+The maximum size (in bytes) of the stack segment for a process;
+this defines how far a program's stack segment may be extended.
+Stack extension is performed automatically by the system.
+.El
+.Pp
+A resource limit is specified as a soft limit and a hard limit.  When a
+soft limit is exceeded a process may receive a signal (for example, if
+the cpu time or file size is exceeded), but it will be allowed to
+continue execution until it reaches the hard limit (or modifies
+its resource limit).  The 
+.Em rlimit
+structure is used to specify the hard and soft limits on a resource,
+.Bd -literal -offset indent
+struct rlimit {
+	quad_t	rlim_cur;	/* current (soft) limit */
+	quad_t	rlim_max;	/* hard limit */
+};
+.Ed
+.Pp
+Only the super-user may raise the maximum limits.  Other users
+may only alter 
+.Fa rlim_cur
+within the range from 0 to 
+.Fa rlim_max
+or (irreversibly) lower
+.Fa rlim_max .
+.Pp
+An
+.Dq infinite
+value for a limit is defined as
+.Dv RLIM_INFINITY .
+.Pp
+Because this information is stored in the per-process information,
+this system call must be executed directly by the shell if it
+is to affect all future processes created by the shell;
+.Ic limit
+is thus a built-in command to
+.Xr csh 1 .
+.Pp
+The system refuses to extend the data or stack space when the limits
+would be exceeded in the normal way: a
+.Xr break
+call fails if the data space limit is reached.
+When the stack limit is reached, the process receives
+a segmentation fault
+.Pq Dv SIGSEGV ;
+if this signal is not
+caught by a handler using the signal stack, this signal
+will kill the process.
+.Pp
+A file I/O operation that would create a file larger that the process'
+soft limit will cause the write to fail and a signal
+.Dv SIGXFSZ
+to be
+generated; this normally terminates the process, but may be caught.  When
+the soft cpu time limit is exceeded, a signal
+.Dv SIGXCPU
+is sent to the
+offending process.
+.Sh RETURN VALUES
+A 0 return value indicates that the call succeeded, changing
+or returning the resource limit.   A return value of -1 indicates
+that an error occurred, and an error code is stored in the global
+location
+.Va errno .
+.Sh ERRORS
+.Fn Getrlimit
+and
+.Fn setrlimit
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EFAULT
+The address specified for
+.Fa rlp
+is invalid.
+.It Bq Er EPERM
+The limit specified to
+.Fn setrlimit
+would have
+raised the maximum limit value, and the caller is not the super-user.
+.El
+.Sh SEE ALSO
+.Xr csh 1 ,
+.Xr quota 2 ,
+.Xr sigaltstack 2 ,
+.Xr sigvec 2 ,
+.Xr sysctl 3
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/getrusage.2 b/lib/libc/sys/getrusage.2
new file mode 100644
index 0000000..b75bccc
--- /dev/null
+++ b/lib/libc/sys/getrusage.2
@@ -0,0 +1,165 @@
+.\" Copyright (c) 1985, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getrusage.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETRUSAGE 2
+.Os BSD 4
+.Sh NAME
+.Nm getrusage
+.Nd get information about resource utilization
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/time.h>
+.Fd #include <sys/resource.h>
+.Fd #define	RUSAGE_SELF	 0
+.Fd #define	RUSAGE_CHILDREN	-1
+.Ft int
+.Fn getrusage "int who" "struct rusage *rusage"
+.Sh DESCRIPTION
+.Fn Getrusage
+returns information describing the resources utilized by the current
+process, or all its terminated child processes.
+The
+.Fa who
+parameter is either
+.Dv RUSAGE_SELF
+or
+.Dv RUSAGE_CHILDREN .
+The buffer to which
+.Fa rusage
+points will be filled in with
+the following structure:
+.Bd -literal
+struct rusage {
+        struct timeval ru_utime; /* user time used */
+        struct timeval ru_stime; /* system time used */
+        long ru_maxrss;          /* integral max resident set size */
+        long ru_ixrss;           /* integral shared text memory size */
+        long ru_idrss;           /* integral unshared data size */
+        long ru_isrss;           /* integral unshared stack size */
+        long ru_minflt;          /* page reclaims */
+        long ru_majflt;          /* page faults */
+        long ru_nswap;           /* swaps */
+        long ru_inblock;         /* block input operations */
+        long ru_oublock;         /* block output operations */
+        long ru_msgsnd;          /* messages sent */
+        long ru_msgrcv;          /* messages received */
+        long ru_nsignals;        /* signals received */
+        long ru_nvcsw;           /* voluntary context switches */
+        long ru_nivcsw;          /* involuntary context switches */
+};
+.Ed
+.Pp
+The fields are interpreted as follows:
+.Bl -tag -width ru_minfltaa
+.It Fa ru_utime
+the total amount of time spent executing in user mode.
+.It Fa ru_stime
+the total amount of time spent in the system executing on behalf
+of the process(es).
+.It Fa ru_maxrss
+the maximum resident set size utilized (in kilobytes).
+.It Fa ru_ixrss
+an \*(lqintegral\*(rq value indicating the amount of memory used
+by the text segment
+that was also shared among other processes.  This value is expressed
+in units of kilobytes * ticks-of-execution.
+.It Fa ru_idrss
+an integral value of the amount of unshared memory residing in the
+data segment of a process (expressed in units of
+kilobytes * ticks-of-execution).
+.It Fa ru_isrss
+an integral value of the amount of unshared memory residing in the
+stack segment of a process (expressed in units of
+kilobytes * ticks-of-execution).
+.It Fa ru_minflt
+the number of page faults serviced without any I/O activity; here
+I/O activity is avoided by \*(lqreclaiming\*(rq a page frame from
+the list of pages awaiting reallocation.
+.It Fa ru_majflt
+the number of page faults serviced that required I/O activity.
+.It Fa ru_nswap
+the number of times a process was \*(lqswapped\*(rq out of main
+memory.
+.It Fa ru_inblock
+the number of times the file system had to perform input.
+.It Fa ru_oublock
+the number of times the file system had to perform output.
+.It Fa ru_msgsnd
+the number of IPC messages sent.
+.It Fa ru_msgrcv
+the number of IPC messages received.
+.It Fa ru_nsignals
+the number of signals delivered.
+.It Fa ru_nvcsw
+the number of times a context switch resulted due to a process
+voluntarily giving up the processor before its time slice was
+completed (usually to await availability of a resource).
+.It Fa ru_nivcsw
+the number of times a context switch resulted due to a higher
+priority process becoming runnable or because the current process
+exceeded its time slice.
+.El
+.Sh NOTES
+The numbers 
+.Fa ru_inblock
+and 
+.Fa ru_oublock
+account only for real
+I/O; data supplied by the caching mechanism is charged only
+to the first process to read or write the data.
+.Sh ERRORS
+.Fn Getrusage
+returns -1 on error.
+The possible errors are:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The
+.Fa who
+parameter is not a valid value.
+.It Bq Er EFAULT
+The address specified by the
+.Fa rusage
+parameter is not in a valid part of the process address space.
+.El
+.Sh SEE ALSO
+.Xr gettimeofday 2 ,
+.Xr wait 2
+.Sh BUGS
+There is no way to obtain information about a child process
+that has not yet terminated.
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/getsockname.2 b/lib/libc/sys/getsockname.2
new file mode 100644
index 0000000..d56e404
--- /dev/null
+++ b/lib/libc/sys/getsockname.2
@@ -0,0 +1,87 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getsockname.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETSOCKNAME 2
+.Os BSD 4.2
+.Sh NAME
+.Nm getsockname
+.Nd get socket name
+.Sh SYNOPSIS
+.Ft int
+.Fn getsockname "int s" "struct sockaddr *name" "int *namelen"
+.Sh DESCRIPTION
+.Fn Getsockname
+returns the current 
+.Fa name
+for the specified socket.  The
+.Fa namelen
+parameter should be initialized to indicate
+the amount of space pointed to by
+.Fa name .
+On return it contains the actual size of the name
+returned (in bytes).
+.Sh DIAGNOSTICS
+A 0 is returned if the call succeeds, -1 if it fails.
+.Sh ERRORS
+The call succeeds unless:
+.Bl -tag -width ENOTSOCKAA
+.It Bq Er EBADF
+The argument
+.Fa s
+is not a valid descriptor.
+.It Bq Er ENOTSOCK
+The argument
+.Fa s
+is a file, not a socket.
+.It Bq Er ENOBUFS
+Insufficient resources were available in the system
+to perform the operation.
+.It Bq Er EFAULT
+The 
+.Fa name
+parameter points to memory not in a valid part of the
+process address space.
+.El
+.Sh SEE ALSO
+.Xr bind 2 ,
+.Xr socket 2
+.Sh BUGS
+Names bound to sockets in the UNIX domain are inaccessible;
+.Xr getsockname
+returns a zero length name.
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/getsockopt.2 b/lib/libc/sys/getsockopt.2
new file mode 100644
index 0000000..24ae2b8b
--- /dev/null
+++ b/lib/libc/sys/getsockopt.2
@@ -0,0 +1,354 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)getsockopt.2	8.3 (Berkeley) 4/19/94
+.\"	$Id$
+.\"
+.Dd November 3, 1995
+.Dt GETSOCKOPT 2
+.Os BSD 4.3r
+.Sh NAME
+.Nm getsockopt ,
+.Nm setsockopt
+.Nd get and set options on sockets
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/socket.h>
+.Ft int
+.Fn getsockopt "int s" "int level" "int optname" "void *optval" "int *optlen"
+.Ft int
+.Fn setsockopt "int s" "int level" "int optname" "const void *optval" "int optlen"
+.Sh DESCRIPTION
+.Fn Getsockopt
+and
+.Fn setsockopt
+manipulate the
+.Em options
+associated with a socket.  Options may exist at multiple
+protocol levels; they are always present at the uppermost
+.Dq socket
+level.
+.Pp
+When manipulating socket options the level at which the
+option resides and the name of the option must be specified.
+To manipulate options at the socket level,
+.Fa level
+is specified as
+.Dv SOL_SOCKET .
+To manipulate options at any
+other level the protocol number of the appropriate protocol
+controlling the option is supplied.  For example,
+to indicate that an option is to be interpreted by the
+.Tn TCP
+protocol,
+.Fa level
+should be set to the protocol number of
+.Tn TCP ;
+see
+.Xr getprotoent 3 .
+.Pp
+The parameters
+.Fa optval
+and
+.Fa optlen
+are used to access option values for
+.Fn setsockopt .
+For
+.Fn getsockopt
+they identify a buffer in which the value for the
+requested option(s) are to be returned.  For
+.Fn getsockopt ,
+.Fa optlen
+is a value-result parameter, initially containing the
+size of the buffer pointed to by
+.Fa optval ,
+and modified on return to indicate the actual size of
+the value returned.  If no option value is
+to be supplied or returned,
+.Fa optval
+may be NULL.
+.Pp
+.Fa Optname
+and any specified options are passed uninterpreted to the appropriate
+protocol module for interpretation.
+The include file
+.Ao Pa sys/socket.h Ac
+contains definitions for
+socket level options, described below.
+Options at other protocol levels vary in format and
+name; consult the appropriate entries in
+section
+4 of the manual.
+.Pp
+Most socket-level options utilize an
+.Fa int
+parameter for
+.Fa optval .
+For
+.Fn setsockopt ,
+the parameter should be non-zero to enable a boolean option,
+or zero if the option is to be disabled.
+.Dv SO_LINGER
+uses a
+.Fa struct linger
+parameter, defined in
+.Ao Pa sys/socket.h Ac ,
+which specifies the desired state of the option and the
+linger interval (see below).
+.Dv SO_SNDTIMEO
+and
+.Dv SO_RCVTIMEO
+use a
+.Fa struct timeval
+parameter, defined in
+.Ao Pa sys/time.h Ac .
+.Pp
+The following options are recognized at the socket level.
+Except as noted, each may be examined with
+.Fn getsockopt
+and set with
+.Fn setsockopt .
+.Bl -column SO_OOBINLINE -offset indent
+.It Dv SO_DEBUG Ta "enables recording of debugging information"
+.It Dv SO_REUSEADDR Ta "enables local address reuse"
+.It Dv SO_REUSEPORT Ta "enables duplicate address and port bindings"
+.It Dv SO_KEEPALIVE Ta "enables keep connections alive"
+.It Dv SO_DONTROUTE Ta "enables routing bypass for outgoing messages"
+.It Dv SO_LINGER  Ta "linger on close if data present"
+.It Dv SO_BROADCAST Ta "enables permission to transmit broadcast messages"
+.It Dv SO_OOBINLINE Ta "enables reception of out-of-band data in band"
+.It Dv SO_SNDBUF Ta "set buffer size for output"
+.It Dv SO_RCVBUF Ta "set buffer size for input"
+.It Dv SO_SNDLOWAT Ta "set minimum count for output"
+.It Dv SO_RCVLOWAT Ta "set minimum count for input"
+.It Dv SO_SNDTIMEO Ta "set timeout value for output"
+.It Dv SO_RCVTIMEO Ta "set timeout value for input"
+.It Dv SO_TYPE Ta "get the type of the socket (get only)"
+.It Dv SO_ERROR Ta "get and clear error on the socket (get only)"
+.El
+.Pp
+.Dv SO_DEBUG
+enables debugging in the underlying protocol modules.
+.Dv SO_REUSEADDR
+indicates that the rules used in validating addresses supplied
+in a
+.Xr bind 2
+call should allow reuse of local addresses.
+.Dv SO_REUSEPORT
+allows completely duplicate bindings by multiple processes
+if they all set
+.Dv SO_REUSEPORT
+before binding the port.
+This option permits multiple instances of a program to each
+receive UDP/IP multicast or broadcast datagrams destined for the bound port.
+.Dv SO_KEEPALIVE
+enables the
+periodic transmission of messages on a connected socket.  Should the
+connected party fail to respond to these messages, the connection is
+considered broken and processes using the socket are notified via a
+.Dv SIGPIPE
+signal when attempting to send data.
+.Dv SO_DONTROUTE
+indicates that outgoing messages should
+bypass the standard routing facilities.  Instead, messages are directed
+to the appropriate network interface according to the network portion
+of the destination address.
+.Pp
+.Dv SO_LINGER
+controls the action taken when unsent messages
+are queued on socket and a 
+.Xr close 2
+is performed.
+If the socket promises reliable delivery of data and
+.Dv SO_LINGER is set,
+the system will block the process on the 
+.Xr close
+attempt until it is able to transmit the data or until it decides it
+is unable to deliver the information (a timeout period, termed the
+linger interval, is specified in the
+.Fn setsockopt
+call when
+.Dv SO_LINGER
+is requested). 
+If
+.Dv SO_LINGER
+is disabled and a 
+.Xr close
+is issued, the system will process the close in a manner that allows
+the process to continue as quickly as possible.
+.Pp
+The option
+.Dv SO_BROADCAST
+requests permission to send broadcast datagrams
+on the socket.
+Broadcast was a privileged operation in earlier versions of the system.
+With protocols that support out-of-band data, the
+.Dv SO_OOBINLINE
+option
+requests that out-of-band data be placed in the normal data input queue
+as received; it will then be accessible with
+.Xr recv
+or
+.Xr read
+calls without the
+.Dv MSG_OOB
+flag.
+Some protocols always behave as if this option is set.
+.Dv SO_SNDBUF
+and
+.Dv SO_RCVBUF
+are options to adjust the normal
+buffer sizes allocated for output and input buffers, respectively.
+The buffer size may be increased for high-volume connections,
+or may be decreased to limit the possible backlog of incoming data.
+The system places an absolute maximum on these values, which is accessible
+through the
+.Xr sysctl 3
+MIB variable
+.Dq Li kern.maxsockbuf .
+.Pp
+.Dv SO_SNDLOWAT
+is an option to set the minimum count for output operations.
+Most output operations process all of the data supplied
+by the call, delivering data to the protocol for transmission
+and blocking as necessary for flow control.
+Nonblocking output operations will process as much data as permitted
+subject to flow control without blocking, but will process no data
+if flow control does not allow the smaller of the low water mark value
+or the entire request to be processed.
+A
+.Xr select 2
+operation testing the ability to write to a socket will return true
+only if the low water mark amount could be processed.
+The default value for
+.Dv SO_SNDLOWAT
+is set to a convenient size for network efficiency, often 1024.
+.Dv SO_RCVLOWAT
+is an option to set the minimum count for input operations.
+In general, receive calls will block until any (non-zero) amount of data
+is received, then return with the smaller of the amount available or the amount
+requested.
+The default value for
+.Dv SO_RCVLOWAT
+is 1.
+If 
+.Dv SO_RCVLOWAT
+is set to a larger value, blocking receive calls normally
+wait until they have received the smaller of the low water mark value
+or the requested amount.
+Receive calls may still return less than the low water mark if an error
+occurs, a signal is caught, or the type of data next in the receive queue
+is different from that which was returned.
+.Pp
+.Dv SO_SNDTIMEO
+is an option to set a timeout value for output operations.
+It accepts a
+.Fa struct timeval
+parameter with the number of seconds and microseconds
+used to limit waits for output operations to complete.
+If a send operation has blocked for this much time,
+it returns with a partial count
+or with the error
+.Er EWOULDBLOCK
+if no data were sent.
+In the current implementation, this timer is restarted each time additional
+data are delivered to the protocol,
+implying that the limit applies to output portions ranging in size
+from the low water mark to the high water mark for output.
+.Dv SO_RCVTIMEO
+is an option to set a timeout value for input operations.
+It accepts a
+.Fa struct timeval
+parameter with the number of seconds and microseconds
+used to limit waits for input operations to complete.
+In the current implementation, this timer is restarted each time additional
+data are received by the protocol,
+and thus the limit is in effect an inactivity timer.
+If a receive operation has been blocked for this much time without
+receiving additional data, it returns with a short count
+or with the error
+.Er EWOULDBLOCK
+if no data were received.
+.Pp
+Finally,
+.Dv SO_TYPE
+and
+.Dv SO_ERROR
+are options used only with
+.Fn getsockopt .
+.Dv SO_TYPE
+returns the type of the socket, such as
+.Dv SOCK_STREAM ;
+it is useful for servers that inherit sockets on startup.
+.Dv SO_ERROR
+returns any pending error on the socket and clears
+the error status.
+It may be used to check for asynchronous errors on connected
+datagram sockets or for other asynchronous errors.
+.Sh RETURN VALUES
+A 0 is returned if the call succeeds, -1 if it fails.
+.Sh ERRORS
+The call succeeds unless:
+.Bl -tag -width ENOPROTOOPTAA
+.It Bq Er EBADF
+The argument
+.Fa s
+is not a valid descriptor.
+.It Bq Er ENOTSOCK
+The argument
+.Fa s
+is a file, not a socket.
+.It Bq Er ENOPROTOOPT
+The option is unknown at the level indicated.
+.It Bq Er EFAULT
+The address pointed to by 
+.Fa optval
+is not in a valid part of the process address space.
+For
+.Fn getsockopt ,
+this error may also be returned if
+.Fa optlen
+is not in a valid part of the process address space.
+.El
+.Sh SEE ALSO
+.Xr sysctl 1 ,
+.Xr ioctl 2 ,
+.Xr socket 2 ,
+.Xr getprotoent 3 ,
+.Xr sysctl 3 ,
+.Xr protocols 5
+.Sh BUGS
+Several of the socket options should be handled at lower levels of the system.
+.Sh HISTORY
+The
+.Nm
+system call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/gettimeofday.2 b/lib/libc/sys/gettimeofday.2
new file mode 100644
index 0000000..9426de6
--- /dev/null
+++ b/lib/libc/sys/gettimeofday.2
@@ -0,0 +1,119 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)gettimeofday.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETTIMEOFDAY 2
+.Os BSD 4
+.Sh NAME
+.Nm gettimeofday ,
+.Nm settimeofday
+.Nd get/set date and time
+.Sh SYNOPSIS
+.Fd #include <sys/time.h>
+.Ft int
+.Fn gettimeofday "struct timeval *tp" "struct timezone *tzp"
+.Ft int
+.Fn settimeofday "struct timeval *tp" "struct timezone *tzp"
+.Sh DESCRIPTION
+.Bf -symbolic
+Note: timezone is no longer used; this information is kept outside
+the kernel.
+.Ef
+The system's notion of the current Greenwich time and the current time
+zone is obtained with the
+.Fn gettimeofday
+call, and set with the
+.Fn settimeofday
+call.  The time is expressed in seconds and microseconds
+since midnight (0 hour), January 1, 1970.  The resolution of the system
+clock is hardware dependent, and the time may be updated continuously or
+in ``ticks.''  If
+.Fa tp
+or
+.Fa tzp
+is NULL, the associated time
+information will not be returned or set.
+.Pp
+The structures pointed to by
+.Fa tp
+and
+.Fa tzp
+are defined in 
+.Ao Pa sys/time.h Ac
+as:
+.Pp
+.Bd -literal
+struct timeval {
+	long	tv_sec;		/* seconds since Jan. 1, 1970 */
+	long	tv_usec;	/* and microseconds */
+};
+
+struct timezone {
+	int	tz_minuteswest; /* of Greenwich */
+	int	tz_dsttime;	/* type of dst correction to apply */
+};
+.Ed
+.Pp
+The 
+.Fa timezone
+structure indicates the local time zone
+(measured in minutes of time westward from Greenwich),
+and a flag that, if nonzero, indicates that
+Daylight Saving time applies locally during
+the appropriate part of the year.
+.Pp
+Only the super-user may set the time of day or time zone.
+.Sh RETURN
+A 0 return value indicates that the call succeeded.
+A -1 return value indicates an error occurred, and in this
+case an error code is stored into the global variable
+.Va errno .
+.Sh ERRORS
+The following error codes may be set in
+.Va errno :
+.Bl -tag -width [EFAULT]
+.It Bq Er EFAULT
+An argument address referenced invalid memory.
+.It Bq Er EPERM
+A user other than the super-user attempted to set the time.
+.El
+.Sh SEE ALSO
+.Xr date 1 ,
+.Xr adjtime 2 ,
+.Xr ctime 3 ,
+.Xr timed 8
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/getuid.2 b/lib/libc/sys/getuid.2
new file mode 100644
index 0000000..23b1763
--- /dev/null
+++ b/lib/libc/sys/getuid.2
@@ -0,0 +1,80 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getuid.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt GETUID 2
+.Os BSD 4
+.Sh NAME
+.Nm getuid ,
+.Nm geteuid
+.Nd get user identification
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Fd #include <sys/types.h>
+.Ft uid_t
+.Fn getuid void
+.Ft uid_t
+.Fn geteuid void
+.Sh DESCRIPTION
+The
+.Fn getuid
+function returns the real user ID of the calling process.
+The
+.Fn geteuid
+function
+returns the effective user ID of the calling process.
+.Pp
+The real user ID is that of the user who has invoked the program.
+As the effective user ID
+gives the process additional permissions during
+execution of
+.Dq Em set-user-ID
+mode processes,
+.Fn getuid
+is used to determine the real-user-id of the calling process.
+.Sh ERRORS
+The
+.Fn getuid
+and
+.Fn geteuid
+functions are always successful, and no return value is reserved to
+indicate an error.
+.Sh SEE ALSO
+.Xr getgid 2 ,
+.Xr setreuid 2
+.Sh STANDARDS
+.Fn Geteuid
+and
+.Fn getuid
+conform to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
diff --git a/lib/libc/sys/intro.2 b/lib/libc/sys/intro.2
new file mode 100644
index 0000000..bf43809
--- /dev/null
+++ b/lib/libc/sys/intro.2
@@ -0,0 +1,668 @@
+.\" Copyright (c) 1993, 1980198319861991
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)intro.2	8.3 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt INTRO 2
+.Os BSD 4
+.Sh NAME
+.Nm intro
+.Nd introduction to system calls and error numbers
+.Sh SYNOPSIS
+.Fd #include <sys/errno.h>
+.Sh DESCRIPTION
+This section provides an overview of the system calls,
+their error returns, and other common definitions and concepts.
+.\".Pp
+.\".Sy System call restart
+.\".Pp
+.\"<more later...>
+.Sh DIAGNOSTICS
+Nearly all of the system calls provide an error number in the external
+variable
+.Va errno ,
+which is defined as:
+.Pp
+.Dl extern int errno
+.Pp
+When a system call detects an error,
+it returns an integer value
+indicating failure (usually -1)
+and sets the variable
+.Va errno
+accordingly.
+<This allows interpretation of the failure on receiving
+a -1 and to take action accordingly.>
+Successful calls never set
+.Va errno ;
+once set, it remains until another error occurs.
+It should only be examined after an error.
+Note that a number of system calls overload the meanings of these
+error numbers, and that the meanings must be interpreted according
+to the type and circumstances of the call.
+.Pp
+The following is a complete list of the errors and their
+names as given in
+.Aq Pa sys/errno.h .
+.Bl -hang -width Ds
+.It Er 0 Em "Error 0" .
+Not used.
+.It Er 1 EPERM Em "Operation not permitted" .
+An attempt was made to perform an operation limited to processes
+with appropriate privileges or to the owner of a file or other
+resources.
+.It Er 2 ENOENT Em "No such file or directory" .
+A component of a specified pathname did not exist, or the 
+pathname was an empty string.
+.It Er 3 ESRCH Em "No such process" .
+No process could be found corresponding to that specified by the given
+process ID.
+.It Er 4 EINTR Em "Interrupted function call" .
+An asynchronous signal (such as
+.Dv SIGINT
+or
+.Dv SIGQUIT )
+was caught by the process during the execution of an interruptible
+function. If the signal handler performs a normal return, the
+interrupted function call will seem to have returned the error condition.
+.It Er 5 EIO Em "Input/output error" .
+Some physical input or output error occurred.
+This error will not be reported until a subsequent operation on the same file
+descriptor and may be lost (over written) by any subsequent errors.
+.It Er 6 ENXIO Em "\&No such device or address" .
+Input or output on a special file referred to a device that did not
+exist, or
+made a request beyond the limits of the device.
+This error may also occur when, for example,
+a tape drive is not online or no disk pack is
+loaded on a drive.
+.It Er 7 E2BIG Em "Arg list too long" .
+The number of bytes used for the argument and environment
+list of the new process exceeded the current limit
+of 20480 bytes
+.Pf ( Dv NCARGS
+in
+.Aq Pa sys/param.h ) .
+.It Er 8 ENOEXEC Em "Exec format error" .
+A request was made to execute a file
+that, although it has the appropriate permissions,
+was not in the format required for an
+executable file.
+.It Er 9 EBADF Em "Bad file descriptor" .
+A file descriptor argument was out of range, referred to no open file,
+or a read (write) request was made to a file that was only open for
+writing (reading).
+.It Er 10 ECHILD Em "\&No child processes" .
+A
+.Xr wait
+or
+.Xr waitpid
+function was executed by a process that had no existing or unwaited-for
+child processes.
+.It Er 11 EDEADLK Em "Resource deadlock avoided" .
+An attempt was made to lock a system resource that
+would have resulted in a deadlock situation.
+.It Er 12 ENOMEM Em "Cannot allocate memory" .
+The new process image required more memory than was allowed by the hardware
+or by system-imposed memory management constraints.
+A lack of swap space is normally temporary; however,
+a lack of core is not.
+Soft limits may be increased to their corresponding hard limits.
+.It Er 13 EACCES Em "Permission denied" .
+An attempt was made to access a file in a way forbidden
+by its file access permissions.
+.It Er 14 EFAULT Em "Bad address" .
+The system detected an invalid address in attempting to
+use an argument of a call.
+.It Er 15 ENOTBLK Em "Not a block device" .
+A block device operation was attempted on a non-block device or file.
+.It Er 16 EBUSY Em "Resource busy" .
+An attempt to use a system resource which was in use at the time
+in a manner which would have conflicted with the request.
+.It Er 17 EEXIST Em "File exists" .
+An existing file was mentioned in an inappropriate context,
+for instance, as the new link name in a
+.Xr link
+function.
+.It Er 18 EXDEV Em "Improper link" .
+A hard link to a file on another file system
+was attempted.
+.It Er 19 ENODEV Em "Operation not supported by device" .
+An attempt was made to apply an inappropriate
+function to a device,
+for example,
+trying to read a write-only device such as a printer.
+.It Er 20 ENOTDIR Em "Not a directory" .
+A component of the specified pathname existed, but it was
+not a directory, when a directory was expected.
+.It Er 21 EISDIR Em "Is a directory" .
+An attempt was made to open a directory with write mode specified.
+.It Er 22 EINVAL Em "Invalid argument" .
+Some invalid argument was supplied. (For example,
+specifying an undefined signal to a
+.Xr signal
+or
+.Xr kill
+function).
+.It Er 23 ENFILE Em "Too many open files in system" .
+Maximum number of file descriptors allowable on the system
+has been reached and a requests for an open cannot be satisfied
+until at least one has been closed.
+.It Er 24 EMFILE Em "Too many open files" .
+<As released, the limit on the number of
+open files per process is 64.>
+.Xr Getdtablesize 2
+will obtain the current limit.
+.It Er 25 ENOTTY Em "Inappropriate ioctl for device" .
+A control function (see
+.Xr ioctl 2 )
+was attempted for a file or
+special device for which the operation was inappropriate.
+.It Er 26 ETXTBSY Em "Text file busy" .
+The new process was a pure procedure (shared text) file
+which was open for writing by another process, or
+while the pure procedure file was being executed an
+.Xr open
+call requested write access.
+.It Er 27 EFBIG Em "File too large" .
+The size of a file exceeded the maximum (about
+.if t 2\u\s-231\s+2\d
+.if n 2.1E9
+bytes).
+.It Er 28 ENOSPC Em "Device out of space" .
+A
+.Xr write
+to an ordinary file, the creation of a
+directory or symbolic link, or the creation of a directory
+entry failed because no more disk blocks were available
+on the file system, or the allocation of an inode for a newly
+created file failed because no more inodes were available
+on the file system.
+.It Er 29 ESPIPE Em "Illegal seek" .
+An
+.Xr lseek
+function was issued on a socket, pipe or
+.Tn FIFO .
+.It Er 30 EROFS Em "Read-only file system" .
+An attempt was made to modify a file or directory
+was made
+on a file system that was read-only at the time.
+.It Er 31 EMLINK Em "Too many links" .
+Maximum allowable hard links to a single file has been exceeded (limit
+of 32767 hard links per file).
+.It Er 32 EPIPE Em "Broken pipe" .
+A write on a pipe, socket or
+.Tn FIFO
+for which there is no process
+to read the data.
+.It Er 33 EDOM Em "Numerical argument out of domain" .
+A numerical input argument was outside the defined domain of the mathematical
+function.
+.It Er 34 ERANGE Em "Numerical result out of range" .
+A numerical result of the function was too large to fit in the
+available space (perhaps exceeded precision).
+.It Er 35 EAGAIN Em "Resource temporarily unavailable" .
+This is a temporary condition and later calls to the
+same routine may complete normally.
+.It Er 36 EINPROGRESS Em "Operation now in progress" .
+An operation that takes a long time to complete (such as
+a
+.Xr connect 2 )
+was attempted on a non-blocking object (see
+.Xr fcntl 2 ) .
+.It Er 37 EALREADY Em "Operation already in progress" .
+An operation was attempted on a non-blocking object that already
+had an operation in progress.
+.It Er 38 ENOTSOCK Em "Socket operation on non-socket" .
+Self-explanatory.
+.It Er 39 EDESTADDRREQ Em "Destination address required" .
+A required address was omitted from an operation on a socket.
+.It Er 40 EMSGSIZE Em "Message too long" .
+A message sent on a socket was larger than the internal message buffer
+or some other network limit.
+.It Er 41 EPROTOTYPE Em "Protocol wrong type for socket" .
+A protocol was specified that does not support the semantics of the
+socket type requested. For example, you cannot use the
+.Tn ARPA
+Internet
+.Tn UDP
+protocol with type
+.Dv SOCK_STREAM .
+.It Er 42 ENOPROTOOPT Em "Protocol not available" .
+A bad option or level was specified in a
+.Xr getsockopt 2
+or
+.Xr setsockopt 2
+call.
+.It Er 43 EPROTONOSUPPORT Em "Protocol not supported" .
+The protocol has not been configured into the
+system or no implementation for it exists.
+.It Er 44 ESOCKTNOSUPPORT Em "Socket type not supported" .
+The support for the socket type has not been configured into the
+system or no implementation for it exists.
+.It Er 45 EOPNOTSUPP Em "Operation not supported" .
+The attempted operation is not supported for the type of object referenced.
+Usually this occurs when a file descriptor refers to a file or socket
+that cannot support this operation,
+for example, trying to
+.Em accept
+a connection on a datagram socket.
+.It Er 46 EPFNOSUPPORT Em "Protocol family not supported" .
+The protocol family has not been configured into the
+system or no implementation for it exists.
+.It Er 47 EAFNOSUPPORT Em "Address family not supported by protocol family" .
+An address incompatible with the requested protocol was used.
+For example, you shouldn't necessarily expect to be able to use
+.Tn NS
+addresses with
+.Tn ARPA
+Internet protocols.
+.It Er 48 EADDRINUSE Em "Address already in use" .
+Only one usage of each address is normally permitted.
+.It Er 49 EADDRNOTAVAIL Em "Cannot assign requested address" .
+Normally results from an attempt to create a socket with an
+address not on this machine.
+.It Er 50 ENETDOWN Em "Network is down" .
+A socket operation encountered a dead network.
+.It Er 51 ENETUNREACH Em "Network is unreachable" .
+A socket operation was attempted to an unreachable network.
+.It Er 52 ENETRESET Em "Network dropped connection on reset" .
+The host you were connected to crashed and rebooted.
+.It Er 53 ECONNABORTED Em "Software caused connection abort" .
+A connection abort was caused internal to your host machine.
+.It Er 54 ECONNRESET Em "Connection reset by peer" .
+A connection was forcibly closed by a peer.  This normally
+results from a loss of the connection on the remote socket
+due to a timeout or a reboot.
+.It Er 55 ENOBUFS Em "\&No buffer space available" .
+An operation on a socket or pipe was not performed because
+the system lacked sufficient buffer space or because a queue was full.
+.It Er 56 EISCONN Em "Socket is already connected" .
+A
+.Xr connect
+request was made on an already connected socket; or,
+a
+.Xr sendto
+or
+.Xr sendmsg
+request on a connected socket specified a destination
+when already connected.
+.It Er 57 ENOTCONN Em "Socket is not connected" .
+An request to send or receive data was disallowed because
+the socket was not connected and (when sending on a datagram socket)
+no address was supplied.
+.It Er 58 ESHUTDOWN Em "Cannot send after socket shutdown" .
+A request to send data was disallowed because the socket
+had already been shut down with a previous
+.Xr shutdown 2
+call.
+.It Er 60 ETIMEDOUT Em "Operation timed out" .
+A
+.Xr connect
+or
+.Xr send
+request failed because the connected party did not
+properly respond after a period of time.  (The timeout
+period is dependent on the communication protocol.)
+.It Er 61 ECONNREFUSED Em "Connection refused" .
+No connection could be made because the target machine actively
+refused it.  This usually results from trying to connect
+to a service that is inactive on the foreign host.
+.It Er 62 ELOOP Em "Too many levels of symbolic links" .
+A path name lookup involved more than 8 symbolic links.
+.It Er 63 ENAMETOOLONG Em "File name too long" .
+A component of a path name exceeded 255
+.Pq Dv MAXNAMELEN
+characters, or an entire
+path name exceeded 1023
+.Pq Dv MAXPATHLEN Ns -1
+characters.
+.It Er 64 EHOSTDOWN Em "Host is down" .
+A socket operation failed because the destination host was down.
+.It Er 65 EHOSTUNREACH Em "No route to host" .
+A socket operation was attempted to an unreachable host.
+.It Er 66 ENOTEMPTY Em "Directory not empty" .
+A directory with entries other than
+.Ql \&.
+and
+.Ql \&..
+was supplied to a remove directory or rename call.
+.It Er 67 EPROCLIM Em "Too many processes" .
+.It Er 68 EUSERS Em "Too many users" .
+The quota system ran out of table entries.
+.It Er 69 EDQUOT Em "Disc quota exceeded" .
+A 
+.Xr write
+to an ordinary file, the creation of a
+directory or symbolic link, or the creation of a directory
+entry failed because the user's quota of disk blocks was
+exhausted, or the allocation of an inode for a newly
+created file failed because the user's quota of inodes
+was exhausted.
+.It Er 70 ESTALE Em "Stale NFS file handle" .
+An attempt was made to access an open file (on an
+.Tn NFS
+filesystem)
+which is now unavailable as referenced by the file descriptor.  
+This may indicate the file was deleted on the
+.Tn NFS 
+server or some 
+other catastrophic event occurred.
+.It Er 72 EBADRPC Em "RPC struct is bad" .
+Exchange of
+.Tn RPC
+information was unsuccessful.
+.It Er 73 ERPCMISMATCH Em "RPC version wrong" .
+The version of
+.Tn RPC
+on the remote peer is not compatible with
+the local version.
+.It Er 74 EPROGUNAVAIL Em "RPC prog. not avail" .
+The requested program is not registered on the remote host.
+.It Er 75 EPROGMISMATCH Em "Program version wrong" .
+The requested version of the program is not available 
+on the remote host
+.Pq Tn RPC .
+.It Er 76 EPROCUNAVAIL Em "Bad procedure for program" .
+An
+.Tn RPC
+call was attempted for a procedure which doesn't exist
+in the remote program.
+.It Er 77 ENOLCK Em "No locks available" .
+A system-imposed limit on the number of simultaneous file 
+locks was reached.
+.It Er 78 ENOSYS Em "Function not implemented" .
+Attempted a system call that is not available on this 
+system.
+.Sh DEFINITIONS
+.Bl -tag -width Ds
+.It  Process ID .
+Each active process in the system is uniquely identified by a non-negative
+integer called a process ID.  The range of this ID is from 0 to 30000.
+.It  Parent process ID
+A new process is created by a currently active process; (see
+.Xr fork 2 ) .
+The parent process ID of a process is initially the process ID of its creator.
+If the creating process exits,
+the parent process ID of each child is set to the ID of a system process,
+.Xr init .
+.It  Process Group
+Each active process is a member of a process group that is identified by
+a non-negative integer called the process group ID.  This is the process
+ID of the group leader.  This grouping permits the signaling of related
+processes (see
+.Xr termios 4 )
+and the job control mechanisms of
+.Xr csh 1 .
+.It Session
+A session is a set of one or more process groups.
+A session is created by a successful call to
+.Xr setsid 2 ,
+which causes the caller to become the only member of the only process
+group in the new session.
+.It Session leader
+A process that has created a new session by a successful call to
+.Xr setsid 2 ,
+is known as a session leader.
+Only a session leader may acquire a terminal as its controlling terminal (see
+.Xr termios 4 ) .
+.It Controlling process
+A session leader with a controlling terminal is a controlling process.
+.It Controlling terminal
+A terminal that is associated with a session is known as the controlling
+terminal for that session and its members.
+.It  "Terminal Process Group ID"
+A terminal may be acquired by a session leader as its controlling terminal.
+Once a terminal is associated with a session, any of the process groups
+within the session may be placed into the foreground by setting
+the terminal process group ID to the ID of the process group.
+This facility is used
+to arbitrate between multiple jobs contending for the same terminal;
+(see
+.Xr csh 1
+and
+.Xr tty 4 ) .
+.It  "Orphaned Process Group"
+A process group is considered to be
+.Em orphaned
+if it is not under the control of a job control shell.
+More precisely, a process group is orphaned
+when none of its members has a parent process that is in the same session
+as the group,
+but is in a different process group.
+Note that when a process exits, the parent process for its children
+is changed to be
+.Xr init ,
+which is in a separate session.
+Not all members of an orphaned process group are necessarily orphaned
+processes (those whose creating process has exited).
+The process group of a session leader is orphaned by definition.
+.It "Real User ID and Real Group ID"
+Each user on the system is identified by a positive integer
+termed the real user ID.
+.Pp
+Each user is also a member of one or more groups. 
+One of these groups is distinguished from others and
+used in implementing accounting facilities.  The positive
+integer corresponding to this distinguished group is termed 
+the real group ID.
+.Pp
+All processes have a real user ID and real group ID.
+These are initialized from the equivalent attributes
+of the process that created it.
+.It "Effective User Id, Effective Group Id, and Group Access List"
+Access to system resources is governed by two values:
+the effective user ID, and the group access list.
+The first member of the group access list is also known as the
+effective group ID.
+(In POSIX.1, the group access list is known as the set of supplementary
+group IDs, and it is unspecified whether the effective group ID is
+a member of the list.)
+.Pp
+The effective user ID and effective group ID are initially the
+process's real user ID and real group ID respectively.  Either
+may be modified through execution of a set-user-ID or set-group-ID
+file (possibly by one its ancestors) (see
+.Xr execve 2 ) .
+By convention, the effective group ID (the first member of the group access
+list) is duplicated, so that the execution of a set-group-ID program
+does not result in the loss of the original (real) group ID.
+.Pp
+The group access list is a set of group IDs
+used only in determining resource accessibility.  Access checks
+are performed as described below in ``File Access Permissions''.
+.It  "Saved Set User ID and Saved Set Group ID"
+When a process executes a new file, the effective user ID is set
+to the owner of the file if the file is set-user-ID, and the effective
+group ID (first element of the group access list) is set to the group
+of the file if the file is set-group-ID.
+The effective user ID of the process is then recorded as the saved set-user-ID,
+and the effective group ID of the process is recorded as the saved set-group-ID.
+These values may be used to regain those values as the effective user
+or group ID after reverting to the real ID (see
+.Xr setuid 2 ) .
+(In POSIX.1, the saved set-user-ID and saved set-group-ID are optional,
+and are used in setuid and setgid, but this does not work as desired
+for the super-user.)
+.It  Super-user
+A process is recognized as a
+.Em super-user
+process and is granted special privileges if its effective user ID is 0.
+.It  Special Processes
+The processes with process IDs of 0, 1, and 2 are special.
+Process 0 is the scheduler.  Process 1 is the initialization process
+.Xr init ,
+and is the ancestor of every other process in the system.
+It is used to control the process structure.
+Process 2 is the paging daemon.
+.It  Descriptor
+An integer assigned by the system when a file is referenced
+by
+.Xr open 2
+or
+.Xr dup 2 ,
+or when a socket is created by
+.Xr pipe 2 ,
+.Xr socket 2
+or
+.Xr socketpair 2 ,
+which uniquely identifies an access path to that file or socket from
+a given process or any of its children.
+.It  File Name
+Names consisting of up to 255
+.Pq Dv MAXNAMELEN
+characters may be used to name
+an ordinary file, special file, or directory.
+.Pp
+These characters may be selected from the set of all
+.Tn ASCII
+character
+excluding 0 (NUL) and the
+.Tn ASCII
+code for
+.Ql \&/
+(slash).  (The parity bit,
+bit 7, must be 0.)
+.Pp
+Note that it is generally unwise to use
+.Ql \&* ,
+.Ql \&? ,
+.Ql \&[
+or
+.Ql \&]
+as part of
+file names because of the special meaning attached to these characters
+by the shell.
+.It  Path Name
+A path name is a
+.Tn NUL Ns -terminated
+character string starting with an
+optional slash
+.Ql \&/ ,
+followed by zero or more directory names separated
+by slashes, optionally followed by a file name.
+The total length of a path name must be less than 1024
+.Pq Dv MAXPATHLEN
+characters.
+.Pp
+If a path name begins with a slash, the path search begins at the
+.Em root
+directory.
+Otherwise, the search begins from the current working directory.
+A slash by itself names the root directory.  An empty
+pathname refers to the current directory.
+.It  Directory
+A directory is a special type of file that contains entries
+that are references to other files.
+Directory entries are called links.  By convention, a directory
+contains at least two links,
+.Ql \&.
+and
+.Ql \&.. ,
+referred to as
+.Em dot
+and
+.Em dot-dot
+respectively.  Dot refers to the directory itself and
+dot-dot refers to its parent directory.
+.It "Root Directory and Current Working Directory"
+Each process has associated with it a concept of a root directory
+and a current working directory for the purpose of resolving path
+name searches.  A process's root directory need not be the root
+directory of the root file system.
+.It  File Access Permissions
+Every file in the file system has a set of access permissions.
+These permissions are used in determining whether a process
+may perform a requested operation on the file (such as opening
+a file for writing).  Access permissions are established at the
+time a file is created.  They may be changed at some later time
+through the 
+.Xr chmod 2
+call. 
+.Pp
+File access is broken down according to whether a file may be: read,
+written, or executed.  Directory files use the execute
+permission to control if the directory may be searched. 
+.Pp
+File access permissions are interpreted by the system as
+they apply to three different classes of users: the owner
+of the file, those users in the file's group, anyone else.
+Every file has an independent set of access permissions for
+each of these classes.  When an access check is made, the system
+decides if permission should be granted by checking the access
+information applicable to the caller.
+.Pp
+Read, write, and execute/search permissions on
+a file are granted to a process if:
+.Pp
+The process's effective user ID is that of the super-user. (Note:
+even the super-user cannot execute a non-executable file.)
+.Pp
+The process's effective user ID matches the user ID of the owner
+of the file and the owner permissions allow the access.
+.Pp
+The process's effective user ID does not match the user ID of the
+owner of the file, and either the process's effective
+group ID matches the group ID
+of the file, or the group ID of the file is in
+the process's group access list,
+and the group permissions allow the access.
+.Pp
+Neither the effective user ID nor effective group ID
+and group access list of the process
+match the corresponding user ID and group ID of the file,
+but the permissions for ``other users'' allow access.
+.Pp
+Otherwise, permission is denied.
+.It  Sockets and Address Families
+.Pp
+A socket is an endpoint for communication between processes.
+Each socket has queues for sending and receiving data.
+.Pp
+Sockets are typed according to their communications properties.
+These properties include whether messages sent and received
+at a socket require the name of the partner, whether communication
+is reliable, the format used in naming message recipients, etc.
+.Pp
+Each instance of the system supports some
+collection of socket types; consult
+.Xr socket 2
+for more information about the types available and
+their properties.
+.Pp
+Each instance of the system supports some number of sets of
+communications protocols.  Each protocol set supports addresses
+of a certain format.  An Address Family is the set of addresses
+for a specific group of protocols.  Each socket has an address
+chosen from the address family in which the socket was created.
+.Sh SEE ALSO
+intro(3), perror(3)
diff --git a/lib/libc/sys/ioctl.2 b/lib/libc/sys/ioctl.2
new file mode 100644
index 0000000..36ce6ff
--- /dev/null
+++ b/lib/libc/sys/ioctl.2
@@ -0,0 +1,106 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)ioctl.2	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt IOCTL 2
+.Os BSD 4
+.Sh NAME
+.Nm ioctl
+.Nd control device
+.Sh SYNOPSIS
+.Fd #include <sys/ioctl.h>
+.Ft int
+.Fn ioctl "int d" "unsigned long request" "char *argp"
+.Sh DESCRIPTION
+The
+.Fn ioctl
+function manipulates the underlying device parameters of special files.
+In particular, many operating
+characteristics of character special files (e.g. terminals)
+may be controlled with
+.Fn ioctl
+requests.
+The argument
+.Fa d
+must be an open file descriptor.
+.Pp
+An  ioctl
+.Fa request
+has encoded in it whether the argument is an
+.Dq in
+parameter
+or
+.Dq out
+parameter, and the size of the argument
+.Fa argp
+in bytes.
+Macros and defines used in specifying an ioctl
+.Fa request
+are located in the file
+.Ao Pa sys/ioctl.h Ac .
+.Sh RETURN VALUES
+If an error has occurred, a value of -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Ioctl
+will fail if:
+.Bl -tag -width [ENOTTY]
+.It Bq Er EBADF
+.Fa d
+is not a valid descriptor.
+.It Bq Er ENOTTY
+.Fa d
+is not associated with a character
+special device.
+.It Bq Er ENOTTY
+The specified request does not apply to the kind
+of object that the descriptor
+.Fa d
+references.
+.It Bq Er EINVAL
+.Fa Request
+or
+.Fa argp
+is not valid.
+.El
+.Sh SEE ALSO
+.Xr mt 1 ,
+.Xr execve 2 ,
+.Xr fcntl 2 ,
+.Xr tty 4 ,
+.Xr intro 4
+.Sh HISTORY
+An
+.Nm
+function call appeared in Version 7 AT&T UNIX.
diff --git a/lib/libc/sys/kill.2 b/lib/libc/sys/kill.2
new file mode 100644
index 0000000..a20afd3
--- /dev/null
+++ b/lib/libc/sys/kill.2
@@ -0,0 +1,131 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)kill.2	8.3 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt KILL 2
+.Os BSD 4
+.Sh NAME
+.Nm kill
+.Nd send signal to a process
+.Sh SYNOPSIS
+.Fd #include <signal.h>
+.Ft int
+.Fn kill "pid_t pid" "int sig"
+.Sh DESCRIPTION
+The
+.Fn kill
+function sends the signal given by
+.Fa sig
+to
+.Fa pid ,
+a
+process or a group of processes.
+.Fa Sig
+may be one of the signals specified in
+.Xr sigaction 2
+or it may be 0, in which case
+error checking is performed but no
+signal is actually sent. 
+This can be used to check the validity of
+.Fa pid .
+.Pp
+For a process to have permission to send a signal to a process designated
+by
+.Fa pid ,
+the real or effective user ID of the receiving process must match
+that of the sending process or the user must have appropriate privileges
+(such as given by a set-user-ID program or the user is the super-user).
+A single exception is the signal SIGCONT, which may always be sent
+to any descendant of the current process.
+.Bl -tag -width Ds
+.It \&If Fa pid No \&is greater than zero :
+.Fa Sig
+is sent to the process whose ID is equal to
+.Fa pid.
+.It \&If Fa pid No \&is zero :
+.Fa Sig
+is sent to all processes whose group ID is equal
+to the process group ID of the sender, and for which the
+process has permission;
+this is a variant of
+.Xr killpg 2 .
+.It \&If Fa pid No \&is -1 :
+If the user has super-user privileges,
+the signal is sent to all processes excluding
+system processes and the process sending the signal.
+If the user is not the super user, the signal is sent to all processes
+with the same uid as the user excluding the process sending the signal.
+No error is returned if any process could be signaled.
+.El
+.Pp
+For compatibility with System V,
+if the process number is negative but not -1,
+the signal is sent to all processes whose process group ID
+is equal to the absolute value of the process number.
+This is a variant of
+.Xr killpg 2 .
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.
+Otherwise, a value of -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Kill
+will fail and no signal will be sent if:
+.Bl -tag -width [EINVAL]
+.It Bq Er EINVAL
+.Fa Sig
+is not a valid signal number.
+.It Bq Er ESRCH
+No process can be found corresponding to that specified by
+.Fa pid .
+.It Bq Er ESRCH
+The process id was given as 0
+but the sending process does not have a process group.
+.It Bq Er EPERM
+The sending process is not the super-user and its effective
+user id does not match the effective user-id of the receiving process.
+When signaling a process group, this error is returned if any members
+of the group could not be signaled.
+.El
+.Sh SEE ALSO
+.Xr getpid 2 ,
+.Xr getpgrp 2 ,
+.Xr killpg 2 ,
+.Xr sigaction 2
+.Sh STANDARDS
+The
+.Fn kill
+function is expected to
+conform to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
diff --git a/lib/libc/sys/ktrace.2 b/lib/libc/sys/ktrace.2
new file mode 100644
index 0000000..9fe61f8
--- /dev/null
+++ b/lib/libc/sys/ktrace.2
@@ -0,0 +1,162 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)ktrace.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt KTRACE 2
+.Os BSD 4
+.Sh NAME
+.Nm ktrace
+.Nd process tracing
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/ktrace.h>
+.Ft int
+.Fn ktrace "const char *tracefile" "int ops" "int trpoints" "int pid"
+.Sh DESCRIPTION
+The
+.Fn ktrace
+function enables or disables tracing of one or more processes.
+Users may only trace their own processes.
+Only the super-user can trace setuid or setgid programs.
+.Pp
+The
+.Ar tracefile
+gives the pathname of the file to be used for tracing.
+The file must exist and be writable by the calling process.
+All trace records are always appended to the file,
+so the file must be truncated to zero length to discard
+previous trace data.
+If tracing points are being disabled (see KTROP_CLEAR below),
+.Ar tracefile
+may be NULL.
+.Pp
+The
+.Nm ops
+parameter specifies the requested ktrace operation.
+The defined operations are:
+.Bl -column KTRFLAG_DESCENDXXX -offset indent
+.It KTROP_SET	Enable trace points specified in Ar trpoints .
+.It KTROP_CLEAR	Disable trace points specified in Ar trpoints .
+.It KTROP_CLEARFILE	Stop all tracing.
+.It KTRFLAG_DESCEND	The tracing change should apply to the
+specified process and all its current children.
+.El
+.Pp
+The
+.Nm trpoints
+parameter specifies the trace points of interest.
+The defined trace points are:
+.Bl -column KTRFAC_SYSCALLXXX -offset indent
+.It KTRFAC_SYSCALL	Trace system calls.
+.It KTRFAC_SYSRET	Trace return values from system calls.
+.It KTRFAC_NAMEI	Trace name lookup operations.
+.It KTRFAC_GENIO	Trace all I/O (note that this option can
+generate much output).
+.It KTRFAC_PSIG	Trace posted signals.
+.It KTRFAC_CSW	Trace context switch points.
+.It KTRFAC_INHERIT	Inherit tracing to future children.
+.El
+.Pp
+Each tracing event outputs a record composed of a generic header
+followed by a trace point specific structure.
+The generic header is:
+.Bd -literal
+struct ktr_header {
+	int	ktr_len;		/* length of buf */
+	short	ktr_type;		/* trace record type */
+	pid_t	ktr_pid;		/* process id */
+	char	ktr_comm[MAXCOMLEN+1];	/* command name */
+	struct	timeval ktr_time;	/* timestamp */
+	caddr_t	ktr_buf;
+};
+.Ed
+.Pp
+The
+.Nm ktr_len
+field specifies the length of the 
+.Nm ktr_type
+data that follows this header.
+The
+.Nm ktr_pid
+and
+.Nm ktr_comm
+fields specify the process and command generating the record.
+The
+.Nm ktr_time
+field gives the time (with microsecond resolution)
+that the record was generated.
+The
+.Nm ktr_buf
+is an internal kernel pointer and is not useful.
+.Pp
+The generic header is followed by 
+.Nm ktr_len
+bytes of a
+.Nm ktr_type
+record.
+The type specific records are defined in the
+.Pa <sys/ktrace.h>
+include file.
+.Sh RETURN VALUES
+On successful completion a value of 0 is returned.
+Otherwise, a value of -1 is returned and
+.Va errno
+is set to show the error.
+.Sh ERRORS
+.Fn Ktrace
+will fail if:
+.Bl -tag -width ENAMETOOLONGAA
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named tracefile does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.El
+.Sh SEE ALSO
+.Xr ktrace 1 ,
+.Xr kdump 1
+.Sh HISTORY
+A
+.Nm ktrace
+function call first appeared in
+.Bx 4.4 .
diff --git a/lib/libc/sys/link.2 b/lib/libc/sys/link.2
new file mode 100644
index 0000000..d160786
--- /dev/null
+++ b/lib/libc/sys/link.2
@@ -0,0 +1,151 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)link.2	8.3 (Berkeley) 1/12/94
+.\"
+.Dd January 12, 1994
+.Dt LINK 2
+.Os BSD 4
+.Sh NAME
+.Nm link
+.Nd make a hard file link
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn link "const char *name1" "const char *name2"
+.Sh DESCRIPTION
+The
+.Fn link
+function call
+atomically creates the specified directory entry (hard link)
+.Fa name2
+with the attributes of the underlying object pointed at by
+.Fa name1
+If the link is successful: the link count of the underlying object
+is incremented;
+.Fa name1
+and
+.Fa name2
+share equal access and rights
+to the
+underlying object.
+.Pp
+If
+.Fa name1
+is removed, the file
+.Fa name2
+is not deleted and the link count of the
+underlying object is
+decremented.
+.Pp
+.Fa Name1
+must exist for the hard link to
+succeed and
+both
+.Fa name1
+and
+.Fa name2
+must be in the same file system.
+Unless the caller is the super-user,
+.Fa name1
+may not be a directory.
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.  Otherwise,
+a value of -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Link
+will fail and no link will be created if:
+.Bl -tag -width Ar
+.It Bq Er ENOTDIR
+A component of either path prefix is not a directory.
+.It Bq Er EINVAL
+Either pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of either pathname exceeded 255 characters,
+or entire length of either path name exceeded 1023 characters.
+.It Bq Er ENOENT
+A component of either path prefix does not exist.
+.It Bq Er EACCES
+A component of either path prefix denies search permission.
+.It Bq Er EACCES
+The requested link requires writing in a directory with a mode
+that denies write permission.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating one of the pathnames.
+.It Bq Er ENOENT
+The file named by
+.Fa name1
+does not exist.
+.It Bq Er EEXIST
+The link named by
+.Fa name2
+does exist.
+.It Bq Er EPERM
+The file named by
+.Fa name1
+is a directory and the effective
+user ID is not super-user.
+.It Bq Er EXDEV
+The link named by
+.Fa name2
+and the file named by
+.Fa name1
+are on different file systems.
+.It Bq Er ENOSPC
+The directory in which the entry for the new link is being placed
+cannot be extended because there is no space left on the file
+system containing the directory.
+.ne 3v
+.It Bq Er EDQUOT
+The directory in which the entry for the new link
+is being placed cannot be extended because the
+user's quota of disk blocks on the file system
+containing the directory has been exhausted.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to 
+the file system to make the directory entry.
+.It Bq Er EROFS
+The requested link requires writing in a directory on a read-only file
+system.
+.It Bq Er EFAULT
+One of the pathnames specified
+is outside the process's allocated address space.
+.El
+.Sh SEE ALSO
+.Xr symlink 2 ,
+.Xr unlink 2
+.Sh STANDARDS
+.Fn Link
+is expected to
+conform to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
diff --git a/lib/libc/sys/listen.2 b/lib/libc/sys/listen.2
new file mode 100644
index 0000000..eaa9522
--- /dev/null
+++ b/lib/libc/sys/listen.2
@@ -0,0 +1,120 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	From: @(#)listen.2	8.2 (Berkeley) 12/11/93
+.\"	$Id$
+.\"
+.Dd November 3, 1995
+.Dt LISTEN 2
+.Os BSD 4.2
+.Sh NAME
+.Nm listen
+.Nd listen for connections on a socket
+.Sh SYNOPSIS
+.Fd #include <sys/socket.h>
+.Ft int
+.Fn listen "int s" "int backlog"
+.Sh DESCRIPTION
+To accept connections, a socket
+is first created with
+.Xr socket 2 ,
+a willingness to accept incoming connections and
+a queue limit for incoming connections are specified with
+.Fn listen ,
+and then the connections are
+accepted with
+.Xr accept 2 .
+The
+.Fn listen
+call applies only to sockets of type
+.Dv SOCK_STREAM
+or
+.Dv SOCK_SEQPACKET.
+.Pp
+The
+.Fa backlog
+parameter defines the maximum length the queue of
+pending connections may grow to.
+If a connection
+request arrives with the queue full the client may
+receive an error with an indication of
+.Er ECONNREFUSED ,
+or, if the underlying protocol supports retransmission,
+the request may be ignored so that retries may succeed.
+.Pp
+The
+.Xr sysctl 3
+MIB variable
+.Dq Li kern.somaxconn
+specifies a hard limit on
+.Fa backlog ;
+if a  value greater than
+.Li kern.somaxconn
+or less than zero is specified,
+.Fa backlog
+is silently forced to
+.Li kern.somaxconn .
+.Sh RETURN VALUES
+A 0 return value indicates success; -1 indicates an error.
+.Sh ERRORS
+.Fn Listen 
+will fail if:
+.Bl -tag -width [EOPNOTSUPP]
+.It Bq Er EBADF
+The argument
+.Fa s
+is not a valid descriptor.
+.It Bq Er ENOTSOCK
+The argument
+.Fa s
+is not a socket.
+.It Bq Er EOPNOTSUPP
+The socket is not of a type that supports the operation
+.Fn listen .
+.El
+.Sh SEE ALSO
+.Xr sysctl 1 ,
+.Xr accept 2 ,
+.Xr connect 2 ,
+.Xr socket 2 ,
+.Xr sysctl 3
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
+The ability to configure the maximum
+.Fa backlog
+at run-time, and to use a negative
+.Fa backlog
+to request the maximum allowable value,  was introduced in
+.Tn FreeBSD
+2.2.
diff --git a/lib/libc/sys/lseek.2 b/lib/libc/sys/lseek.2
new file mode 100644
index 0000000..ef38451
--- /dev/null
+++ b/lib/libc/sys/lseek.2
@@ -0,0 +1,135 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)lseek.2	8.3 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt LSEEK 2
+.Os BSD 4
+.Sh NAME
+.Nm lseek
+.Nd reposition read/write file offset
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft off_t
+.Fn lseek "int fildes" "off_t offset" "int whence"
+.Sh DESCRIPTION
+The
+.Fn lseek
+function repositions the offset of the file descriptor
+.Fa fildes
+to the
+argument
+.Fa offset
+according to the directive
+.Fa whence.
+The argument
+.Fa fildes
+must be an open
+file descriptor.
+.Fn Lseek
+repositions the file pointer
+.Fa fildes
+as follows:
+.Bl -item -offset indent
+.It
+If
+.Fa whence
+is
+.Dv SEEK_SET ,
+the offset is set to
+.Fa offset
+bytes.
+.It
+If
+.Fa whence
+is
+.Dv SEEK_CUR ,
+the offset is set to its current location plus
+.Fa offset
+bytes.
+.It
+If
+.Fa whence
+is
+.Dv SEEK_END ,
+the offset is set to the size of the
+file plus
+.Fa offset
+bytes.
+.El
+.Pp
+The
+.Fn lseek
+function allows the file offset to be set beyond the end
+of the existing end-of-file of the file. If data is later written
+at this point, subsequent reads of the data in the gap return
+bytes of zeros (until data is actually written into the gap).
+.Pp
+Some devices are incapable of seeking.  The value of the pointer
+associated with such a device is undefined.
+.Sh RETURN VALUES
+Upon successful completion,
+.Fn lseek
+returns the resulting offset location as measured in bytes from the
+beginning of the file.
+Otherwise,
+a value of -1 is returned and
+.Va errno
+is set to indicate
+the error.
+.Sh ERRORS
+.Fn Lseek
+will fail and the file pointer will remain unchanged if:
+.Bl -tag -width [EINVAL]
+.It Bq Er EBADF
+.Em Fildes
+is not an open file descriptor.
+.It Bq Er ESPIPE
+.Em Fildes
+is associated with a pipe, socket, or FIFO.
+.It Bq Er EINVAL
+.Fa Whence
+is not a proper value.
+.El
+.Sh SEE ALSO
+.Xr dup 2 ,
+.Xr open 2
+.Sh BUGS
+This document's use of
+.Fa whence
+is incorrect English, but is maintained for historical reasons.
+.Sh STANDARDS
+The
+.Fn lseek
+function
+conforms to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
diff --git a/lib/libc/sys/lseek.c b/lib/libc/sys/lseek.c
new file mode 100644
index 0000000..52208d1
--- /dev/null
+++ b/lib/libc/sys/lseek.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)lseek.c	8.1 (Berkeley) 6/17/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/syscall.h>
+
+/*
+ * This function provides 64-bit offset padding that
+ * is not supplied by GCC 1.X but is supplied by GCC 2.X.
+ */
+off_t
+lseek(fd, offset, whence)
+	int	fd;
+	off_t	offset;
+	int	whence;
+{
+	extern off_t __syscall();
+
+	return(__syscall((quad_t)SYS_lseek, fd, 0, offset, whence));
+}
diff --git a/lib/libc/sys/madvise.2 b/lib/libc/sys/madvise.2
new file mode 100644
index 0000000..d0676ab
--- /dev/null
+++ b/lib/libc/sys/madvise.2
@@ -0,0 +1,66 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)madvise.2	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt MADVISE 2
+.Os
+.Sh NAME
+.Nm madvise
+.Nd give advise about use of memory
+.Sh SYNOPSIS
+.Fn madvise "caddr_t addr" "int len" "int behav"
+.Sh DESCRIPTION
+The
+.Fn madvise
+system call
+allows a process that has knowledge of its memory behavior
+to describe it to the system.
+The known behaviors are given in
+.Pa <sys/mman.h> :
+.Bd -literal
+#define	MADV_NORMAL	0	/* no further special treatment */
+#define	MADV_RANDOM	1	/* expect random page references */
+#define	MADV_SEQUENTIAL	2	/* expect sequential references */
+#define	MADV_WILLNEED	3	/* will need these pages */
+#define	MADV_DONTNEED	4	/* don't need these pages */
+#define	MADV_SPACEAVAIL	5	/* insure that resources are reserved */
+.Ed
+.Sh SEE ALSO
+.Xr msync 2 ,
+.Xr munmap 2 ,
+.Xr mprotect 2 ,
+.Xr mincore 2
+.Sh HISTORY
+The
+.Nm madvise
+function first appeared in 4.4BSD.
diff --git a/lib/libc/sys/mincore.2 b/lib/libc/sys/mincore.2
new file mode 100644
index 0000000..4e73c2a
--- /dev/null
+++ b/lib/libc/sys/mincore.2
@@ -0,0 +1,61 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)mincore.2	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt MINCORE 2
+.Os
+.Sh NAME
+.Nm mincore
+.Nd get advise about use of memory
+.Sh SYNOPSIS
+.Fn mincore "caddr_t addr" "int len" "char *vec"
+.Sh DESCRIPTION
+The
+.Fn mincore
+system call
+allows a process to obtain information about whether pages are
+core resident.
+Here the current core residency of the pages is returned
+in the character array
+.Fa vec ,
+with a value of 1 meaning
+that the page is in-core.
+.Sh SEE ALSO
+.Xr msync 2 ,
+.Xr munmap 2 ,
+.Xr mprotect 2 ,
+.Xr madvise 2 ,
+.Sh HISTORY
+The
+.Fn mincore
+function first appeared in 4.4BSD.
diff --git a/lib/libc/sys/mkdir.2 b/lib/libc/sys/mkdir.2
new file mode 100644
index 0000000..4bf11be
--- /dev/null
+++ b/lib/libc/sys/mkdir.2
@@ -0,0 +1,113 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)mkdir.2	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt MKDIR 2
+.Os BSD 4.2
+.Sh NAME
+.Nm mkdir
+.Nd make a directory file
+.Sh SYNOPSIS
+.Fd #include <sys/stat.h>
+.Ft int
+.Fn mkdir "const char *path" "mode_t mode"
+.Sh DESCRIPTION
+The directory
+.Fa path
+is created with the access permissions specified by
+.Fa mode
+and restricted by the the
+.Xr umask 2
+of the calling process.
+.Pp
+The directory's owner ID is set to the process's effective user ID.
+The directory's group ID is set to that of the parent directory in
+which it is created.
+.Sh RETURN VALUES
+A 0 return value indicates success.  A -1 return value
+indicates an error, and an error code is stored in
+.Va errno .
+.Sh ERRORS
+.Fn Mkdir
+will fail and no directory will be created if:
+.Bl -tag -width ENAMETOOLO
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+A component of the path prefix does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EPERM
+The
+.Fa path
+argument contains a byte with the high-order bit set.
+.It Bq Er EROFS
+The named file resides on a read-only file system.
+.It Bq Er EEXIST
+The named file exists.
+.It Bq Er ENOSPC
+The new directory cannot be created because there is no space left
+on the file system that will contain the directory.
+.It Bq Er ENOSPC
+There are no free inodes on the file system on which the
+directory is being created.
+.It Bq Er EDQUOT
+The new directory cannot be created because the user's
+quota of disk blocks on the file system that will
+contain the directory has been exhausted.
+.It Bq Er EDQUOT
+The user's quota of inodes on the file system on
+which the directory is being created has been exhausted.
+.It Bq Er EIO
+An I/O error occurred while making the directory entry or allocating the inode.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EFAULT
+.Fa Path
+points outside the process's allocated address space.
+.El
+.Sh SEE ALSO
+.Xr chmod 2 ,
+.Xr stat 2 ,
+.Xr umask 2
+.Sh STANDARDS
+.Fn Mkdir
+conforms to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
diff --git a/lib/libc/sys/mkfifo.2 b/lib/libc/sys/mkfifo.2
new file mode 100644
index 0000000..6f7686e
--- /dev/null
+++ b/lib/libc/sys/mkfifo.2
@@ -0,0 +1,124 @@
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)mkfifo.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt MKFIFO 2
+.Os
+.Sh NAME
+.Nm mkfifo
+.Nd make a fifo file
+.Sh SYNOPSIS
+.Fd #include <sys/stat.h>
+.Ft int
+.Fn mkfifo "const char *path" "mode_t mode"
+.Sh DESCRIPTION
+.Fn Mkfifo
+creates a new fifo file with name
+.Fa path .
+The access permissions are
+specified by
+.Fa mode
+and restricted by the
+.Xr umask 2
+of the calling process.
+.Pp
+The fifo's owner ID is set to the process's effective user ID.
+The fifo's group ID is set to that of the parent directory in
+which it is created.
+.Sh RETURN VALUES
+A 0 return value indicates success.  A -1 return value
+indicates an error, and an error code is stored in
+.Va errno .
+.Sh ERRORS
+.Fn Mkfifo
+will fail and no fifo will be created if:
+.Bl -tag -width ENAMETOOLO
+.It Bq Er ENOTSUPP
+The kernel has not been configured to support fifo's.
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+A component of the path prefix does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EPERM
+The
+.Fa path
+argument contains a byte with the high-order bit set.
+.It Bq Er EROFS
+The named file resides on a read-only file system.
+.It Bq Er EEXIST
+The named file exists.
+.It Bq Er ENOSPC
+The directory in which the entry for the new fifo is being placed
+cannot be extended because there is no space left on the file
+system containing the directory.
+.It Bq Er ENOSPC
+There are no free inodes on the file system on which the
+fifo is being created.
+.It Bq Er EDQUOT
+The directory in which the entry for the new fifo
+is being placed cannot be extended because the
+user's quota of disk blocks on the file system
+containing the directory has been exhausted.
+.It Bq Er EDQUOT
+The user's quota of inodes on the file system on
+which the fifo is being created has been exhausted.
+.It Bq Er EIO
+An
+.Tn I/O
+error occurred while making the directory entry or allocating the inode.
+.It Bq Er EIO
+An
+.Tn I/O
+error occurred while reading from or writing to the file system.
+.It Bq Er EFAULT
+.Fa Path
+points outside the process's allocated address space.
+.El
+.Sh SEE ALSO
+.Xr chmod 2 ,
+.Xr stat 2 ,
+.Xr umask 2
+.Sh STANDARDS
+The
+.Nm mkfifo
+function call conforms to
+.St -p1003.1-88 .
diff --git a/lib/libc/sys/mknod.2 b/lib/libc/sys/mknod.2
new file mode 100644
index 0000000..d77ccbc
--- /dev/null
+++ b/lib/libc/sys/mknod.2
@@ -0,0 +1,127 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)mknod.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt MKNOD 2
+.Os BSD 4
+.Sh NAME
+.Nm mknod
+.Nd make a special file node
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn mknod "const char *path" "mode_t mode" "dev_t dev"
+.Sh DESCRIPTION
+The device special file
+.Fa path
+is created with the major and minor
+device numbers extracted from
+.Fa mode.
+The access permissions of
+.Fa path
+are descendant from the
+.Xr umask 2
+of the parent process.
+.Pp
+If
+.Fa mode
+indicates a block or character special file,
+.Fa dev
+is a configuration dependent specification of a character or block
+I/O device and the superblock of the device.  If
+.Fa mode
+does not indicate a block special or character special device,
+.Fa dev
+is ignored.
+.Pp
+.Fn Mknod
+requires super-user privileges.
+.Sh RETURN VALUES
+Upon successful completion a value of 0 is returned.
+Otherwise, a value of -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Mknod
+will fail and the file will be not created if:
+.Bl -tag -width Er
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+A component of the path prefix does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EPERM
+The process's effective user ID is not super-user.
+.It Bq Er EPERM
+The pathname contains a character with the high-order bit set.
+.It Bq Er EIO
+An I/O error occurred while making the directory entry or allocating the inode.
+.It Bq Er ENOSPC
+The directory in which the entry for the new node is being placed
+cannot be extended because there is no space left on the file
+system containing the directory.
+.It Bq Er ENOSPC
+There are no free inodes on the file system on which the
+node is being created.
+.It Bq Er EDQUOT
+The directory in which the entry for the new node
+is being placed cannot be extended because the
+user's quota of disk blocks on the file system
+containing the directory has been exhausted.
+.It Bq Er EDQUOT
+The user's quota of inodes on the file system on
+which the node is being created has been exhausted.
+.It Bq Er EROFS
+The named file resides on a read-only file system.
+.It Bq Er EEXIST
+The named file exists.
+.It Bq Er EFAULT
+.Fa Path
+points outside the process's allocated address space.
+.El
+.Sh SEE ALSO
+.Xr chmod 2 ,
+.Xr stat 2 ,
+.Xr umask 2
+.Sh HISTORY
+A
+.Nm
+function call appeared in Version 6 AT&T UNIX.
diff --git a/lib/libc/sys/mlock.2 b/lib/libc/sys/mlock.2
new file mode 100644
index 0000000..90bb7c7
--- /dev/null
+++ b/lib/libc/sys/mlock.2
@@ -0,0 +1,161 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)mlock.2	8.2 (Berkeley) 12/11/93
+.\"
+.Dd June 2, 1993
+.Dt MLOCK 2
+.Os
+.Sh NAME
+.Nm mlock ,
+.Nm munlock
+.Nd lock (unlock) physical pages in memory
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/mman.h>
+.Ft int
+.Fn mlock "caddr_t addr" "size_t len"
+.Ft int
+.Fn munlock "caddr_t addr" "size_t len"
+.Sh DESCRIPTION
+The
+.Nm mlock
+system call
+locks into memory the physical pages associated with the virtual address
+range starting at
+.Fa addr
+for
+.Fa len
+bytes.
+The
+.Nm munlock
+call unlocks pages previously locked by one or more
+.Nm mlock
+calls.
+For both, the
+.Fa addr
+parameter should be aligned to a multiple of the page size.
+If the
+.Fa len
+parameter is not a multiple of the page size, it will be rounded up
+to be so.
+The entire range must be allocated.
+.Pp
+After an
+.Nm mlock
+call, the indicated pages will cause neither a non-resident page
+nor address-translation fault until they are unlocked.
+They may still cause protection-violation faults or TLB-miss faults on
+architectures with software-managed TLBs.
+The physical pages remain in memory until all locked mappings for the pages
+are removed.
+Multiple processes may have the same physical pages locked via their own
+virtual address mappings.
+A single process may likewise have pages multiply-locked via different virtual
+mappings of the same pages or via nested
+.Nm mlock
+calls on the same address range.
+Unlocking is performed explicitly by
+.Nm munlock
+or implicitly by a call to
+.Nm munmap
+which deallocates the unmapped address range.
+Locked mappings are not inherited by the child process after a
+.Xr fork 2 .
+.Pp
+Since physical memory is a potentially scarce resource, processes are
+limited in how much they can lock down.
+A single process can
+.Nm mlock
+the minimum of
+a system-wide ``wired pages'' limit and
+the per-process
+.Li RLIMIT_MEMLOCK
+resource limit.
+.Sh RETURN VALUES
+A return value of 0 indicates that the call
+succeeded and all pages in the range have either been locked or unlocked.
+A return value of -1 indicates an error occurred and the locked
+status of all pages in the range remains unchanged.
+In this case, the global location
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Mlock
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The address given is not page aligned or the length is negative.
+.It Bq Er EAGAIN
+Locking the indicated range would exceed either the system or per-process
+limit for locked memory.
+.It Bq Er ENOMEM
+Some portion of the indicated address range is not allocated.
+There was an error faulting/mapping a page.
+.El
+.Fn Munlock
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The address given is not page aligned or the length is negative.
+.It Bq Er ENOMEM
+Some portion of the indicated address range is not allocated.
+Some portion of the indicated address range is not locked.
+.El
+.Sh "SEE ALSO"
+.Xr fork 2 ,
+.Xr mmap 2 ,
+.Xr munmap 2 ,
+.Xr setrlimit 2 ,
+.Xr getpagesize 3
+.Sh BUGS
+Unlike The Sun implementation, multiple
+.Nm mlock
+calls on the same address range require the corresponding number of
+.Nm munlock
+calls to actually unlock the pages, i.e.
+.Nm mlock
+nests.
+This should be considered a consequence of the implementation
+and not a feature.
+.Pp
+The per-process resource limit is a limit on the amount of virtual
+memory locked, while the system-wide limit is for the number of locked
+physical pages.
+Hence a process with two distinct locked mappings of the same physical page
+counts as 2 pages against the per-process limit and as only a single page
+in the system limit.
+.Sh HISTORY
+The
+.Fn mlock
+and
+.Fn munlock
+functions first appeared in 4.4BSD.
diff --git a/lib/libc/sys/mmap.2 b/lib/libc/sys/mmap.2
new file mode 100644
index 0000000..1c0d84a
--- /dev/null
+++ b/lib/libc/sys/mmap.2
@@ -0,0 +1,210 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)mmap.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd "June 4, 1993"
+.Dt MMAP 2
+.Os BSD 4
+.Sh NAME
+.Nm mmap
+.Nd map files or devices into memory
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/mman.h>
+.Ft caddr_t
+.Fn mmap "caddr_t addr" "size_t len" "int prot" "int flags" "int fd" "off_t offset"
+.Sh DESCRIPTION
+The
+.Nm mmap
+function causes the pages starting at
+.Fa addr
+and continuing for at most
+.Fa len
+bytes to be mapped from the object described by
+.Fa fd ,
+starting at byte offset
+.Fa offset .
+If
+.Fa offset
+or
+.Fa len
+is not a multiple of the pagesize, the mapped region may extend past the
+specified range.
+.Pp
+If
+.Fa addr
+is non-zero, it is used as a hint to the system.
+(As a convenience to the system, the actual address of the region may differ
+from the address supplied.)
+If
+.Fa addr
+is zero, an address will be selected by the system.
+The actual starting address of the region is returned.
+A successful
+.Fa mmap
+deletes any previous mapping in the allocated address range.
+.Pp
+The protections (region accessibility) are specified in the
+.Fa prot
+argument by
+.Em or Ns 'ing
+the following values:
+.Pp
+.Bl -tag -width MAP_FIXEDX
+.It Dv PROT_EXEC
+Pages may be executed.
+.It Dv PROT_READ
+Pages may be read.
+.It Dv PROT_WRITE
+Pages may be written.
+.El
+.Pp
+The
+.Fa flags
+parameter specifies the type of the mapped object, mapping options and
+whether modifications made to the mapped copy of the page are private
+to the process or are to be shared with other references.
+Sharing, mapping type and options are specified in the
+.Fa flags
+argument by
+.Em or Ns 'ing
+the following values:
+.Pp
+.Bl -tag -width MAP_FIXEDX
+.It Dv MAP_ANON
+Map anonymous memory not associated with any specific file.
+The file descriptor used for creating
+.Dv MAP_ANON
+regions is used only for
+naming, and may be specified as \-1 if no name is associated with the
+region.
+.\".It Dv MAP_FILE
+.\"Mapped from a regular file or character-special device memory.
+.It Dv MAP_FIXED
+Do not permit the system to select a different address than the one
+specified.
+If the specified address cannot be used,
+.Nm mmap
+will fail.
+If MAP_FIXED is specified,
+.Fa addr
+must be a multiple of the pagesize.
+Use of this option is discouraged.
+.It Dv MAP_HASSEMAPHORE
+Notify the kernel that the region may contain semaphores and that special
+handling may be necessary.
+.It Dv MAP_INHERIT
+Permit regions to be inherited across
+.Xr exec 2
+system calls.
+.It Dv MAP_PRIVATE
+Modifications are private.
+.It Dv MAP_SHARED
+Modifications are shared.
+.El
+.Pp
+The 
+.Xr close 2
+function does not unmap pages, see
+.Xr munmap 2
+for further information.
+.Pp
+The current design does not allow a process to specify the location of
+swap space.
+In the future we may define an additional mapping type,
+.Dv MAP_SWAP ,
+in which
+the file descriptor argument specifies a file or device to which swapping
+should be done.
+.Sh RETURN VALUES
+Upon successful completion,
+.Nm mmap
+returns a pointer to the mapped region.
+Otherwise, a value of -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Mmap
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EACCES
+The flag
+.Dv PROT_READ
+was specified as part of the
+.Fa prot
+parameter and
+.Fa fd
+was not open for reading.
+The flags
+.Dv PROT_WRITE ,
+.Dv MAP_SHARED
+and
+.Dv MAP_WRITE
+were specified as part
+of the
+.Fa flags
+and
+.Fa prot
+parameters and
+.Fa fd
+was not open for writing.
+.It Bq Er EBADF
+.Fa Fd
+is not a valid open file descriptor.
+.\".It Bq Er EINVAL
+.\"One of
+.\".Dv MAP_ANON
+.\"or
+.\".Dv MAP_FILE
+.\"was not specified as part of the
+.\".Fa flags
+.\"parameter.
+.Dv MAP_FIXED
+was specified and the
+.I addr
+parameter was not page aligned.
+.Fa Fd
+did not reference a regular or character special file.
+.It Bq Er ENOMEM
+.Dv MAP_FIXED
+was specified and the
+.Fa addr
+parameter wasn't available.
+.Dv MAP_ANON
+was specified and insufficient memory was available.
+.Sh "SEE ALSO"
+.Xr getpagesize 2 ,
+.Xr msync 2 ,
+.Xr munmap 2 ,
+.Xr mprotect 2 ,
+.Xr madvise 2 ,
+.Xr mincore 2
diff --git a/lib/libc/sys/mmap.c b/lib/libc/sys/mmap.c
new file mode 100644
index 0000000..67da734
--- /dev/null
+++ b/lib/libc/sys/mmap.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)mmap.c	8.1 (Berkeley) 6/17/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <sys/syscall.h>
+
+/*
+ * This function provides 64-bit offset padding that
+ * is not supplied by GCC 1.X but is supplied by GCC 2.X.
+ */
+caddr_t
+mmap(addr, len, prot, flags, fd, offset)
+	caddr_t addr;
+	size_t	len;
+	int	prot;
+	int	flags;
+	int	fd;
+	off_t	offset;
+{
+
+	return((caddr_t)__syscall((quad_t)SYS_mmap, addr, len, prot, flags,
+		fd, 0, offset));
+}
diff --git a/lib/libc/sys/mount.2 b/lib/libc/sys/mount.2
new file mode 100644
index 0000000..6829a3e
--- /dev/null
+++ b/lib/libc/sys/mount.2
@@ -0,0 +1,314 @@
+.\" Copyright (c) 1980, 1989, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)mount.2	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.Dt MOUNT 2
+.Os BSD 4
+.Sh NAME
+.Nm mount ,
+.Nm unmount
+.Nd mount or dismount a filesystem
+.Sh SYNOPSIS
+.Fd #include <sys/param.h>
+.Fd #include <sys/mount.h>
+.Ft int
+.Fn mount "int type" "const char *dir" "int flags" "caddr_t data"
+.Ft int
+.Fn unmount "const char *dir" "int flags"
+.Sh DESCRIPTION
+The
+.Fn mount
+function grafts
+a filesystem object onto the system file tree
+at the point
+.Ar dir .
+The argument
+.Ar data
+describes the filesystem object to be mounted.
+The argument
+.Ar type
+tells the kernel how to interpret
+.Ar data
+(See
+.Ar type
+below).
+The contents of the filesystem
+become available through the new mount point
+.Ar dir .
+Any files in
+.Ar dir
+at the time
+of a successful mount are swept under the carpet so to speak, and
+are unavailable until the filesystem is unmounted.
+.Pp
+The following
+.Ar flags
+may be specified to
+suppress default semantics which affect filesystem access.
+.Bl -tag -width MNT_SYNCHRONOUS
+.It Dv MNT_RDONLY
+The filesystem should be treated as read-only;
+Even the super-user may not write on it.
+.It Dv MNT_NOEXEC
+Do not allow files to be executed from the filesystem.
+.It Dv MNT_NOSUID
+Do not honor setuid or setgid bits on files when executing them.
+.It Dv MNT_NODEV
+Do not interpret special files on the filesystem.
+.It Dv MNT_SYNCHRONOUS
+All I/O to the filesystem should be done synchronously.
+.El
+.Pp
+The flag
+.Dv MNT_UPDATE
+indicates that the mount command is being applied 
+to an already mounted filesystem.
+This allows the mount flags to be changed without requiring
+that the filesystem be unmounted and remounted.
+Some filesystems may not allow all flags to be changed.
+For example,
+most filesystems will not allow a change from read-write to read-only.
+.Pp
+The
+.Fa type
+argument defines the type of the filesystem.
+The types of filesystems known to the system are defined in
+.Aq Pa sys/mount.h .
+.Fa Data
+is a pointer to a structure that contains the type
+specific arguments to mount.
+The currently supported types of filesystems and
+their type specific data are:
+.Pp
+.Dv MOUNT_UFS
+.Bd -literal -offset indent -compact
+struct ufs_args {
+      char	*fspec;  /* Block special file to mount */
+      int	exflags; /* export related flags */
+      uid_t	exroot;  /* mapping for root uid */
+};
+.Ed
+.Pp
+.Dv MOUNT_NFS
+.Bd -literal -offset indent -compact
+struct nfs_args {
+      struct sockaddr_in *addr; /* file server address */
+      nfsv2fh_t *fh;       /* File handle to be mounted */
+      int       flags;     /* flags */
+      int       wsize;     /* write size in bytes */
+      int       rsize;     /* read size in bytes */
+      int       timeo;     /* initial timeout 0.1 secs */
+      int       retrans;   /* times to retry send */
+      char      *hostname; /* server's name */
+};
+.Ed
+.Pp
+.Dv MOUNT_MFS
+.Bd -literal -offset indent -compact
+struct mfs_args {
+      char	*name;	/* name of backing process */
+      caddr_t	base;	/* base address of the filesystem */
+      u_long	size;	/* size of the filesystem */
+};
+.Ed
+.Pp
+The
+.Fn umount
+function call disassociates the filesystem from the specified
+mount point
+.Fa dir .
+.Pp
+The
+.Fa flags
+argument may specify
+.Dv MNT_FORCE
+to specify that the filesystem should be forcibly unmounted even if files are
+still active.
+Active special devices continue to work,
+but any further accesses to any other active files result in errors
+even if the filesystem is later remounted.
+.Sh RETURN VALUES
+The
+.Fn mount
+returns the value 0 if the mount was successful, otherwise -1 is returned
+and the variable
+.Va errno
+is set to indicate the error.
+.Pp
+.Nm Umount
+returns the value 0 if the umount succeeded; otherwise -1 is returned
+and the variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Mount
+will fail when one of the following occurs:
+.Bl -tag -width [ENOTBLK]
+.It Bq Er EPERM
+The caller is not the super-user.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or the entire length of a path name exceeded 1023 characters.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating a pathname.
+.It Bq Er ENOENT
+A component of
+.Fa dir
+does not exist.
+.It Bq Er ENOTDIR
+A component of
+.Ar name
+is not a directory,
+or a path prefix of
+.Ar special
+is not a directory.
+.It Bq Er EINVAL
+A pathname contains a character with the high-order bit set.
+.It Bq Er EBUSY
+Another process currently holds a reference to
+.Fa dir .
+.It Bq Er EFAULT
+.Fa Dir
+points outside the process's allocated address space.
+.El
+.Pp
+The following errors can occur for a
+.Em ufs
+filesystem mount:
+.Bl -tag -width [ENOTBLK]
+.It Bq Er ENODEV
+A component of ufs_args
+.Ar fspec
+does not exist.
+.It Bq Er ENOTBLK
+.Ar Fspec
+is not a block device.
+.It Bq Er ENXIO
+The major device number of 
+.Ar fspec
+is out of range (this indicates no device driver exists
+for the associated hardware).
+.It Bq Er EBUSY
+.Ar Fspec
+is already mounted.
+.It Bq Er EMFILE
+No space remains in the mount table.
+.It Bq Er EINVAL
+The super block for the filesystem had a bad magic
+number or an out of range block size.
+.It Bq Er ENOMEM
+Not enough memory was available to read the cylinder
+group information for the filesystem.
+.It Bq Er EIO
+An I/O error occurred while reading the super block or
+cylinder group information.
+.It Bq Er EFAULT
+.Ar Fspec
+points outside the process's allocated address space.
+.El
+.Pp
+The following errors can occur for a
+.Em nfs
+filesystem mount:
+.Bl -tag -width [ENOTBLK]
+.It Bq Er ETIMEDOUT
+.Em Nfs
+timed out trying to contact the server.
+.It Bq Er EFAULT
+Some part of the information described by nfs_args
+points outside the process's allocated address space.
+.El
+.Pp
+The following errors can occur for a
+.Em mfs
+filesystem mount:
+.Bl -tag -width [ENOTBLK]
+.It Bq Er EMFILE
+No space remains in the mount table.
+.It Bq Er EINVAL
+The super block for the filesystem had a bad magic
+number or an out of range block size.
+.It Bq Er ENOMEM
+Not enough memory was available to read the cylinder
+group information for the filesystem.
+.It Bq Er EIO
+A paging error occurred while reading the super block or
+cylinder group information.
+.It Bq Er EFAULT
+.Em Name
+points outside the process's allocated address space.
+.El
+.Pp
+.Nm Umount
+may fail with one of the following errors:
+.Bl -tag -width [ENOTBLK]
+.It Bq Er EPERM
+The caller is not the super-user.
+.It Bq Er ENOTDIR
+A component of the path is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EINVAL
+The requested directory is not in the mount table.
+.It Bq Er EBUSY
+A process is holding a reference to a file located
+on the filesystem.
+.It Bq Er EIO
+An I/O error occurred while writing cached filesystem information.
+.It Bq Er EFAULT
+.Fa Dir
+points outside the process's allocated address space.
+.El
+.Pp
+A
+.Em ufs
+or
+.Em mfs
+mount can also fail if the maximum number of filesystems are currently
+mounted.
+.Sh SEE ALSO
+.Xr mount 8 ,
+.Xr umount 8 ,
+.Xr mfs 8
+.Sh BUGS
+Some of the error codes need translation to more obvious messages.
+.Sh HISTORY
+.Fn Mount
+and
+.Fn umount
+function calls appeared in Version 6 AT&T UNIX.
diff --git a/lib/libc/sys/mprotect.2 b/lib/libc/sys/mprotect.2
new file mode 100644
index 0000000..bb2b9ad
--- /dev/null
+++ b/lib/libc/sys/mprotect.2
@@ -0,0 +1,58 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)mprotect.2	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt MPROTECT 2
+.Os
+.Sh NAME
+.Nm mprotect
+.Nd control the protection of pages
+.Sh SYNOPSIS
+.Fn mprotect "caddr_t addr" "int len" "int prot"
+.Sh DESCRIPTION
+The
+.Fn mprotect
+system call
+changes the specified pages to have protection
+.Fa prot .
+Not all implementations will guarantee protection on a page basis;
+the granularity of protection changes may be as large as an entire region.
+.Sh SEE ALSO
+.Xr msync 2 ,
+.Xr munmap 2 ,
+.Xr madvise 2 ,
+.Xr mincore 2
+.Sh HISTORY
+The
+.Fn mprotect
+function first appeared in 4.4BSD.
diff --git a/lib/libc/sys/msync.2 b/lib/libc/sys/msync.2
new file mode 100644
index 0000000..d976e30
--- /dev/null
+++ b/lib/libc/sys/msync.2
@@ -0,0 +1,91 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)msync.2	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt MSYNC 2
+.Os
+.Sh NAME
+.Nm msync
+.Nd synchronize a mapped region
+.Sh SYNOPSIS
+.Fn msync "caddr_t addr" "int len" "int flags"
+.Sh DESCRIPTION
+The
+.Fn msync
+system call
+writes any modified pages back to the filesystem and updates
+the file modification time.
+If
+.Fa len
+is 0, all modified pages within the region containing
+.Fa addr
+will be flushed;
+if
+.Fa len
+is non-zero, only the pages containing
+.Fa addr
+and
+.Fa len
+succeeding locations will be examined.
+The
+.Fa flags
+argument may be specified as follows:
+.Bd -literal
+MS_ASYNC	Return immediately (not currently implemented)
+MS_INVALIDATE	Invalidate all cached data
+.Ed
+.Sh RETURN VALUES
+If any errors occur, -1 is returned and errno is set to indicate the
+error. Otherwise, a 0 value is returned.
+.Sh ERRORS
+.Fn msync
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+.Fa addr
+is not a multiple of the hardware page size.
+.It Bq Er EINVAL
+.Fa len
+is too large or negative.
+.It Bq Er EINVAL
+.Fa flags
+was both MS_ASYNC and MS_INVALIDATE. Only one of these flags is allowed.
+.Sh SEE ALSO
+.Xr madvise 2 ,
+.Xr munmap 2 ,
+.Xr mprotect 2 ,
+.Xr mincore 2
+.Sh HISTORY
+The
+.Fn msync
+function first appeared in 4.4BSD.
diff --git a/lib/libc/sys/munmap.2 b/lib/libc/sys/munmap.2
new file mode 100644
index 0000000..b9e8a1b
--- /dev/null
+++ b/lib/libc/sys/munmap.2
@@ -0,0 +1,78 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)munmap.2	8.2 (Berkeley) 4/15/94
+.\"
+.Dd April 15, 1994
+.Dt MUNMAP 2
+.Os
+.Sh NAME
+.Nm munmap
+.Nd remove a mapping
+.Sh SYNOPSIS
+.Fn munmap "caddr_t addr" "size_t len"
+.Sh DESCRIPTION
+The
+.Fn munmap
+system call
+deletes the mappings for the specified address range,
+and causes further references to addresses within the range
+to generate invalid memory references.
+.Sh RETURN VALUES
+Upon successful completion,
+.Nm munmap
+returns zero.
+Otherwise, a value of -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Munmap
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The
+.Fa addr
+parameter was not page aligned, the
+.Fa len
+parameter was negative, or
+some part of the region being unmapped is not part of the currently
+valid address space.
+.Sh "SEE ALSO"
+.Xr getpagesize 2 ,
+.Xr msync 2 ,
+.Xr munmap 2 ,
+.Xr mprotect 2 ,
+.Xr madvise 2 ,
+.Xr mincore 2
+.Sh HISTORY
+The
+.Fn munmap
+function first appeared in 4.4BSD.
diff --git a/lib/libc/sys/nfssvc.2 b/lib/libc/sys/nfssvc.2
new file mode 100644
index 0000000..0c8038f
--- /dev/null
+++ b/lib/libc/sys/nfssvc.2
@@ -0,0 +1,238 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)nfssvc.2	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.Dt NFSSVC 2
+.Os
+.Sh NAME
+.Nm nfssvc
+.Nd NFS services
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Fd #include <nfs/nfs.h>
+.Ft int
+.Fn nfssvc "int flags" "void *argstructp"
+.Sh DESCRIPTION
+The
+.Fn nfssvc
+function is used by the NFS daemons to pass information into and out
+of the kernel and also to enter the kernel as a server daemon.
+The
+.Fa flags
+argument consists of several bits that show what action is to be taken
+once in the kernel and the
+.Fa argstructp
+points to one of three structures depending on which bits are set in
+flags.
+.Pp
+On the client side,
+.Xr nfsiod 8
+calls
+.Fn nfssvc
+with the
+.Fa flags
+argument set to
+.Dv NFSSVC_BIOD
+and
+.Fa argstructp
+set to
+.Dv NULL
+to enter the kernel as a block I/O server daemon.
+For
+.Nm NQNFS ,
+.Xr mount_nfs 8
+calls
+.Fn nfssvc
+with the
+.Dv NFSSVC_MNTD
+flag, optionally or'd with the flags
+.Dv NFSSVC_GOTAUTH
+and
+.Dv NFSSVC_AUTHINFAIL
+along with a pointer to a
+.Bd -literal
+struct nfsd_cargs {
+	char		*ncd_dirp;	/* Mount dir path */
+	uid_t		ncd_authuid;	/* Effective uid */
+	int		ncd_authtype;	/* Type of authenticator */
+	int		ncd_authlen;	/* Length of authenticator string */
+	char		*ncd_authstr;	/* Authenticator string */
+};
+.Ed
+.sp
+structure.
+The initial call has only the
+.Dv NFSSVC_MNTD
+flag set to specify service for the mount point.
+If the mount point is using Kerberos, then the
+.Xr mount_nfs 8
+daemon will return from
+.Fn nfssvc
+with errno == ENEEDAUTH whenever the client side requires an ``rcmd''
+authentication ticket for the user.
+.Xr Mount_nfs 8
+will attempt to get the Kerberos ticket, and if successful will call
+.Fn nfssvc
+with the flags
+.Dv NFSSVC_MNTD
+and
+.Dv NFSSVC_GOTAUTH
+after filling the ticket into the 
+ncd_authstr field
+and
+setting the ncd_authlen and ncd_authtype
+fields of the nfsd_cargs structure.
+If
+.Xr mount_nfs 8
+failed to get the ticket,
+.Fn nfssvc
+will be called with the flags
+.Dv NFSSVC_MNTD ,
+.Dv NFSSVC_GOTAUTH
+and
+.Dv NFSSVC_AUTHINFAIL
+to denote a failed authentication attempt.
+.Pp
+On the server side,
+.Fn nfssvc
+is called with the flag
+.Dv NFSSVC_NFSD
+and a pointer to a
+.Bd -literal
+struct nfsd_srvargs {
+	struct nfsd	*nsd_nfsd;	/* Pointer to in kernel nfsd struct */
+	uid_t		nsd_uid;	/* Effective uid mapped to cred */
+	u_long		nsd_haddr;	/* Ip address of client */
+	struct ucred	nsd_cr;		/* Cred. uid maps to */
+	int		nsd_authlen;	/* Length of auth string (ret) */
+	char		*nsd_authstr;	/* Auth string (ret) */
+};
+.Ed
+.sp
+to enter the kernel as an
+.Xr nfsd 8
+daemon.
+Whenever an
+.Xr nfsd 8
+daemon receives a Kerberos authentication ticket, it will return from
+.Fn nfssvc
+with errno == ENEEDAUTH.
+The
+.Xr nfsd 8
+will attempt to authenticate the ticket and generate a set of credentials
+on the server for the ``user id'' specified in the field nsd_uid.
+This is done by first authenticating the Kerberos ticket and then mapping
+the Kerberos principal to a local name and getting a set of credentials for
+that user via.
+.Xr getpwnam 3
+and
+.Xr getgrouplist 3 .
+If successful, the
+.Xr nfsd 8
+will call
+.Fn nfssvc
+with the
+.Dv NFSSVC_NFSD
+and
+.Dv NFSSVC_AUTHIN
+flags set to pass the credential mapping in nsd_cr into the
+kernel to be cached on the server socket for that client.
+If the authentication failed,
+.Xr nfsd 8
+calls
+.Fn nfssvc
+with the flags
+.Dv NFSSVC_NFSD
+and
+.Dv NFSSVC_AUTHINFAIL
+to denote an authentication failure.
+.Pp
+The master
+.Xr nfsd 8
+server daemon calls
+.Fn nfssvc
+with the flag
+.Dv NFSSVC_ADDSOCK
+and a pointer to a
+.Bd -literal
+struct nfsd_args {
+	int	sock;		/* Socket to serve */
+	caddr_t	name;		/* Client address for connection based sockets */
+	int	namelen;	/* Length of name */
+};
+.Ed
+.sp
+to pass a server side
+.Tn NFS
+socket into the kernel for servicing by the
+.Xr nfsd 8
+daemons.
+.Sh RETURN VALUES
+Normally
+.Nm nfssvc
+does not return unless the server
+is terminated by a signal when a value of 0 is returned.
+Otherwise, -1 is returned and the global variable
+.Va errno
+is set to specify the error.
+.Sh ERRORS
+.Bl -tag -width [ENEEDAUTH]
+.It Bq Er ENEEDAUTH
+This special error value
+is really used for authentication support, particularly Kerberos,
+as explained above.
+.It Bq Er EPERM
+The caller is not the super-user.
+.El
+.Sh SEE ALSO
+.Xr nfsd 8 ,
+.Xr mount_nfs 8 ,
+.Xr nfsiod 8
+.Sh HISTORY
+The
+.Nm nfssvc
+function first appeared in 4.4BSD.
+.Sh BUGS
+The
+.Nm nfssvc
+system call is designed specifically for the
+.Tn NFS
+support daemons and as such is specific to their requirements.
+It should really return values to indicate the need for authentication
+support, since
+.Dv ENEEDAUTH
+is not really an error.
+Several fields of the argument structures are assumed to be valid and
+sometimes to be unchanged from a previous call, such that
+.Nm nfssvc
+must be used with extreme care.
diff --git a/lib/libc/sys/open.2 b/lib/libc/sys/open.2
new file mode 100644
index 0000000..dea59fc
--- /dev/null
+++ b/lib/libc/sys/open.2
@@ -0,0 +1,257 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)open.2	8.2 (Berkeley) 11/16/93
+.\"
+.Dd November 16, 1993
+.Dt OPEN 2
+.Os BSD 4
+.Sh NAME
+.Nm open
+.Nd open or create a file for reading or writing
+.Sh SYNOPSIS
+.Fd #include <fcntl.h>
+.Ft int
+.Fn open "const char *path" "int flags" "mode_t mode"
+.Sh DESCRIPTION
+The file name specified by
+.Fa path
+is opened
+for reading and/or writing as specified by the
+argument
+.Fa flags
+and the file descriptor returned to the calling process.
+The
+.Fa flags
+argument may indicate the file is to be
+created if it does not exist (by specifying the
+.Dv O_CREAT
+flag), in which case the file is created with mode
+.Fa mode
+as described in
+.Xr chmod 2
+and modified by the process' umask value (see
+.Xr umask 2 ) .
+.Pp
+The flags specified are formed by
+.Em or Ns 'ing
+the following values
+.Pp
+.Bd -literal -offset indent -compact
+O_RDONLY	open for reading only
+O_WRONLY	open for writing only
+O_RDWR		open for reading and writing
+O_NONBLOCK	do not block on open
+O_APPEND	append on each write
+O_CREAT		create file if it does not exist
+O_TRUNC		truncate size to 0
+O_EXCL		error if create and file exists
+O_SHLOCK	atomically obtain a shared lock
+O_EXLOCK	atomically obtain an exclusive lock
+.Ed
+.Pp
+Opening a file with
+.Dv O_APPEND
+set causes each write on the file
+to be appended to the end.  If
+.Dv O_TRUNC
+is specified and the
+file exists, the file is truncated to zero length.
+If
+.Dv O_EXCL
+is set with
+.Dv O_CREAT
+and the file already
+exists,
+.Fn open
+returns an error.  This may be used to
+implement a simple exclusive access locking mechanism.
+If
+.Dv O_EXCL
+is set and the last component of the pathname is
+a symbolic link,
+.Fn open
+will fail even if the symbolic
+link points to a non-existent name.
+If the
+.Dv O_NONBLOCK
+flag is specified and the
+.Fn open
+call would result
+in the process being blocked for some reason (e.g., waiting for
+carrier on a dialup line),
+.Fn open
+returns immediately.
+The first time the process attempts to perform I/O on the open
+file it will block (not currently implemented).
+.Pp
+When opening a file, a lock with
+.Xr flock 2
+semantics can be obtained by setting
+.Dv O_SHLOCK
+for a shared lock, or
+.Dv O_EXLOCK
+for an exclusive lock.
+If creating a file with
+.Dv O_CREAT ,
+the request for the lock will never fail
+(provided that the underlying filesystem supports locking).
+.Pp
+If successful,
+.Fn open
+returns a non-negative integer, termed a file descriptor.
+It returns -1 on failure.
+The file pointer used to mark the current position within the
+file is set to the beginning of the file.
+.Pp
+When a new file is created it is given the group of the directory
+which contains it.
+.Pp
+The new descriptor is set to remain open across
+.Xr execve
+system calls; see
+.Xr close 2
+and
+.Xr fcntl 2 .
+.Pp
+The system imposes a limit on the number of file descriptors
+open simultaneously by one process.
+.Xr Getdtablesize 2
+returns the current system limit.
+.Sh ERRORS
+The named file is opened unless:
+.Bl -tag -width Er
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+.Dv O_CREAT
+is not set and the named file does not exist.
+.It Bq Er ENOENT
+A component of the path name that must exist does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er EACCES
+The required permissions (for reading and/or writing)
+are denied for the given flags.
+.It Bq Er EACCES
+.Dv O_CREAT
+is specified,
+the file does not exist,
+and the directory in which it is to be created
+does not permit writing.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EISDIR
+The named file is a directory, and the arguments specify
+it is to be opened for writing.
+.It Bq Er EROFS
+The named file resides on a read-only file system,
+and the file is to be modified.
+.It Bq Er EMFILE
+The process has already reached its limit for open file descriptors.
+.It Bq Er ENFILE
+The system file table is full.
+.It Bq Er ENXIO
+The named file is a character special or block
+special file, and the device associated with this special file
+does not exist.
+.It Bq Er EINTR
+The
+.Nm
+operation was interrupted by a signal.
+.It Bq Er EOPNOTSUPP
+.Dv O_SHLOCK
+or
+.Dv O_EXLOCK
+is specified but the underlying filesystem does not support locking.
+.It Bq Er ENOSPC
+.Dv O_CREAT
+is specified,
+the file does not exist,
+and the directory in which the entry for the new file is being placed
+cannot be extended because there is no space left on the file
+system containing the directory.
+.It Bq Er ENOSPC
+.Dv O_CREAT
+is specified,
+the file does not exist,
+and there are no free inodes on the file system on which the
+file is being created.
+.It Bq Er EDQUOT
+.Dv O_CREAT
+is specified,
+the file does not exist,
+and the directory in which the entry for the new file
+is being placed cannot be extended because the
+user's quota of disk blocks on the file system
+containing the directory has been exhausted.
+.It Bq Er EDQUOT
+.Dv O_CREAT
+is specified,
+the file does not exist,
+and the user's quota of inodes on the file system on
+which the file is being created has been exhausted.
+.It Bq Er EIO
+An I/O error occurred while making the directory entry or
+allocating the inode for
+.Dv O_CREAT .
+.It Bq Er ETXTBSY
+The file is a pure procedure (shared text) file that is being
+executed and the
+.Fn open
+call requests write access.
+.It Bq Er EFAULT
+.Fa Path
+points outside the process's allocated address space.
+.It Bq Er EEXIST
+.Dv O_CREAT
+and
+.Dv O_EXCL
+were specified and the file exists.
+.It Bq Er EOPNOTSUPP
+An attempt was made to open a socket (not currently implemented).
+.El
+.Sh SEE ALSO
+.Xr chmod 2 ,
+.Xr close 2 ,
+.Xr dup 2 ,
+.Xr getdtablesize 2 ,
+.Xr lseek 2 ,
+.Xr read 2 ,
+.Xr write 2 ,
+.Xr umask 2
+.Sh HISTORY
+An
+.Nm
+function call appeared in Version 6 AT&T UNIX.
diff --git a/lib/libc/sys/pathconf.2 b/lib/libc/sys/pathconf.2
new file mode 100644
index 0000000..1b4fbc4
--- /dev/null
+++ b/lib/libc/sys/pathconf.2
@@ -0,0 +1,163 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)pathconf.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt PATHCONF 2
+.Os BSD 4
+.Sh NAME
+.Nm pathconf ,
+.Nm fpathconf
+.Nd get configurable pathname variables
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft long
+.Fn pathconf "const char *path" "int name"
+.Ft long
+.Fn fpathconf "int fd" "int name"
+.Sh DESCRIPTION
+.Pp
+The
+.Fn pathconf
+and
+.Fn fpathconf
+functions provides a method for applications to determine the current
+value of a configurable system limit or option variable associated
+with a pathname or file descriptor.
+.Pp
+For
+.Nm pathconf ,
+the
+.Fa path
+argument is the name of a file or directory.
+For
+.Nm fpathconf ,
+the
+.Fa fd
+argument is an open file descriptor.
+The
+.Fa name
+argument specifies the system variable to be queried.
+Symbolic constants for each name value are found in the include file
+.Li <unistd.h> .
+.Pp
+The available values are as follows:
+.Pp
+.Bl -tag -width "123456"
+.Pp
+.It Li _PC_LINK_MAX
+The maximum file link count.
+.It Li _PC_MAX_CANON
+The maximum number of bytes in terminal canonical input line.
+.It Li _PC_MAX_INPUT
+The minimum maximum number of bytes for which space is available in
+a terminal input queue.
+.It Li _PC_NAME_MAX
+The maximum number of bytes in a file name.
+.It Li _PC_PATH_MAX
+The maximum number of bytes in a pathname.
+.It Li _PC_PIPE_BUF
+The maximum number of bytes which will be written atomically to a pipe.
+.It Li _PC_CHOWN_RESTRICTED
+Return 1 if appropriate privileges are required for the
+.Xr chown 2
+system call, otherwise 0.
+.It Li _PC_NO_TRUNC
+Return 1 if file names longer than KERN_NAME_MAX are truncated.
+.It Li _PC_VDISABLE
+Returns the terminal character disabling value.
+.El
+.Sh RETURN VALUES
+If the call to
+.Nm pathconf
+or
+.Nm fpathconf
+is not successful, \-1 is returned and
+.Va errno
+is set appropriately.
+Otherwise, if the variable is associated with functionality that does
+not have a limit in the system, \-1 is returned and
+.Va errno
+is not modified.
+Otherwise, the current variable value is returned.
+.Sh ERRORS
+If any of the following conditions occur, the
+.Nm pathconf
+and
+.Nm fpathconf
+functions shall return -1 and set
+.Va errno
+to the corresponding value.
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value of the
+.Fa name
+argument is invalid.
+.It Bq Er EINVAL
+The implementation does not support an association of the variable
+name with the associated file.
+.El
+.Fn Pathconf
+will fail if:
+.Bl -tag -width ENAMETOOLONGAA
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named file does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.El
+.Pp
+.Bl -tag -width [EFAULT]
+.Fn Fpathconf
+will fail if:
+.It Bq Er EBADF
+.Fa fd
+is not a valid open file descriptor.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.El
+.Sh SEE ALSO
+.Xr sysctl 3
+.Sh HISTORY
+The
+.Nm pathconf
+and
+.Nm fpathconf
+functions first appeared in 4.4BSD.
diff --git a/lib/libc/sys/pipe.2 b/lib/libc/sys/pipe.2
new file mode 100644
index 0000000..b2556a6
--- /dev/null
+++ b/lib/libc/sys/pipe.2
@@ -0,0 +1,123 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)pipe.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt PIPE 2
+.Os BSD 4
+.Sh NAME
+.Nm pipe
+.Nd create descriptor pair for interprocess communication
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn pipe "int *fildes"
+.Sh DESCRIPTION
+The
+.Fn pipe
+function
+creates a
+.Em pipe ,
+which is an object allowing
+bidirectional data flow,
+and allocates a pair of file descriptors.
+.Pp
+By convention, the first descriptor is normally used as the
+.Em read end
+of the pipe,
+and the second is normally the
+.Em write end  ,
+so that data written to
+.Fa fildes[1]
+appears on (i.e., can be read from)
+.Fa fildes[0] .
+This allows the output of one program to be
+sent
+to another program:
+the source's standard output is set up to be
+the write end of the pipe,
+and the sink's standard input is set up to be
+the read end of the pipe.
+The pipe itself persists until all its associated descriptors are
+closed.
+.Pp
+A pipe that has had an end closed is considered
+.Em widowed .
+Writing on such a pipe causes the writing process to receive
+a
+.Dv SIGPIPE
+signal.
+Widowing a pipe is the only way to deliver end-of-file to a reader:
+after the reader consumes any buffered data, reading a widowed pipe
+returns a zero count.
+.Pp
+Pipes are really a special case of the 
+.Xr socketpair 2
+call and, in fact, are implemented as such in the system.
+.Pp
+The bidirectional nature of this implementation of pipes is not
+portable to older systems, so it is reccomended to use the convention
+for using the endpoints in the traditional manner when using a
+pipe in one direction.
+.Sh RETURN VALUES
+On successful creation of the pipe, zero is returned. Otherwise, 
+a value of -1 is returned and the variable
+.Va errno
+set to indicate the
+error.
+.Sh ERRORS
+The
+.Fn pipe
+call will fail if:
+.Bl -tag -width [EMFILE]
+.It Bq Er EMFILE
+Too many descriptors are active.
+.It Bq Er ENFILE
+The system file table is full.
+.It Bq Er EFAULT
+The
+.Fa fildes
+buffer is in an invalid area of the process's address
+space.
+.El
+.Sh SEE ALSO
+.Xr sh 1 ,
+.Xr read 2 ,
+.Xr write 2 ,
+.Xr fork 2 ,
+.Xr socketpair 2
+.Sh HISTORY
+A
+.Nm
+function call appeared in Version 6 AT&T UNIX.
+.Pp
+Bidirectional pipes were first used on Unix System V release 4.
diff --git a/lib/libc/sys/profil.2 b/lib/libc/sys/profil.2
new file mode 100644
index 0000000..670e343
--- /dev/null
+++ b/lib/libc/sys/profil.2
@@ -0,0 +1,129 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Donn Seeley of BSDI.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)profil.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd "June 4, 1993"
+.Dt PROFIL 2
+.Os
+.Sh NAME
+.Nm profil
+.Nd control process profiling
+.Sh SYNOPSIS
+.Ft int
+.Fn profil "char *samples" "int size" "int offset" "int scale"
+.Sh DESCRIPTION
+The
+.Fn profil
+function enables or disables
+program counter profiling of the current process.
+If profiling is enabled,
+then at every clock tick,
+the kernel updates an appropriate count in the
+.Fa samples
+buffer.
+.Pp
+The buffer
+.Fa samples
+contains
+.Fa size
+bytes and is divided into
+a series of 16-bit bins.
+Each bin counts the number of times the program counter
+was in a particular address range in the process
+when a clock tick occurred while profiling was enabled.
+For a given program counter address,
+the number of the corresponding bin is given
+by the relation:
+.Bd -literal -offset indent
+[(pc - offset) / 2] * scale / 65536
+.Ed
+.Pp
+The
+.Fa offset
+parameter is the lowest address at which
+the kernel takes program counter samples.
+The
+.Fa scale
+parameter ranges from 1 to 65536 and
+can be used to change the span of the bins.
+A scale of 65536 maps each bin to 2 bytes of address range;
+a scale of 32768 gives 4 bytes, 16384 gives 8 bytes and so on.
+Intermediate values provide approximate intermediate ranges.
+A
+.Fa scale
+value of 0 disables profiling.
+.Sh RETURN VALUES
+If the
+.Fa scale
+value is nonzero and the buffer
+.Fa samples
+contains an illegal address,
+.Fn profil
+returns \-1,
+profiling is terminated and
+.Va errno
+is set appropriately.
+Otherwise
+.Fn profil
+returns 0.
+.Sh FILES
+.Bl -tag -width /usr/lib/gcrt0.o -compact
+.It Pa /usr/lib/gcrt0.o
+profiling C run-time startup file
+.It Pa gmon.out
+conventional name for profiling output file
+.El
+.Sh ERRORS
+The following error may be reported:
+.Bl -tag -width Er
+.It Bq Er EFAULT
+The buffer
+.Fa samples
+contains an invalid address.
+.El
+.Sh SEE ALSO
+.Xr gprof 1
+.\" .Sh HISTORY
+.\" wish I knew...  probably v7.
+.Sh BUGS
+This routine should be named
+.Fn profile .
+.Pp
+The
+.Fa samples
+argument should really be a vector of type
+.Fa "unsigned short" .
+.Pp
+The format of the gmon.out file is undocumented.
diff --git a/lib/libc/sys/quotactl.2 b/lib/libc/sys/quotactl.2
new file mode 100644
index 0000000..047d070
--- /dev/null
+++ b/lib/libc/sys/quotactl.2
@@ -0,0 +1,213 @@
+.\" Copyright (c) 1983, 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Robert Elz at The University of Melbourne.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)quotactl.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt QUOTACTL 2
+.Os
+.Sh NAME
+.Nm quotactl
+.Nd manipulate filesystem quotas
+.Sh SYNOPSIS
+.Ft #include <ufs/ufs/quota.h>	/* for ufs quotas */
+.Ft int
+.Fn quotactl "const char *path" "int cmd" "int id" "char *addr"
+.Sh DESCRIPTION
+The
+.Fn quotactl
+call enables, disables and
+manipulates filesystem quotas.
+A quota control command
+given by
+.Fa cmd
+operates on the given filename
+.Fa path
+for the given user
+.Fa id .
+The address of an optional command specific data structure,
+.Fa addr ,
+may be given; its interpretation
+is discussed below with each command.
+.Pp
+Currently quotas are supported only for the ``ufs'' filesystem.
+For ``ufs'',
+a command is composed of a primary command (see below)
+and a command type used to interpret the
+.Fa id .
+Types are supported for interpretation of user identifiers
+and group identifiers.
+The ``ufs'' specific commands are:
+.Bl -tag -width Q_QUOTAON
+.It Dv Q_QUOTAON
+Enable disk quotas for the filesystem specified by
+.Fa path .
+The command type specifies the type of the quotas being enabled.
+The
+.Fa addr
+argument specifies a file from which to take the quotas.
+The quota file must exist;
+it is normally created with the 
+.Xr quotacheck 8
+program.
+The
+.Fa id
+argument is unused.
+Only the super-user may turn quotas on.
+.It Dv Q_QUOTAOFF
+Disable disk quotas for the filesystem specified by
+.Fa path .
+The command type specifies the type of the quotas being disabled.
+The
+.Fa addr
+and
+.Fa id
+arguments are unused.
+Only the super-user may turn quotas off.
+.It Dv Q_GETQUOTA
+Get disk quota limits and current usage for the user or group
+(as determined by the command type) with identifier
+.Fa id .
+.Fa Addr
+is a pointer to a
+.Fa struct dqblk
+structure (defined in 
+.Ao Pa ufs/quota.h Ac ) .
+.It Dv Q_SETQUOTA
+Set disk quota limits for the user or group
+(as determined by the command type) with identifier
+.Fa id .
+.Fa Addr
+is a pointer to a
+.Fa struct dqblk
+structure (defined in 
+.Ao Pa ufs/quota.h Ac ) .
+The usage fields of the
+.Fa dqblk
+structure are ignored.
+This call is restricted to the super-user.
+.It Dv Q_SETUSE
+Set disk usage limits for the user or group
+(as determined by the command type) with identifier
+.Fa id .
+.Fa Addr
+is a pointer to a
+.Fa struct dqblk
+structure (defined in
+.Ao Pa ufs/quota.h Ac ) .
+Only the usage fields are used.
+This call is restricted to the super-user.
+.It Dv Q_SYNC
+Update the on-disk copy of quota usages.
+The command type specifies which type of quotas are to be updated.
+The
+.Fa id
+and
+.Fa addr
+parameters are ignored.
+.El
+.Sh RETURN VALUES
+A successful call returns 0,
+otherwise the value -1 is returned and the global variable
+.Va errno
+indicates the reason for the failure.
+.Sh ERRORS
+A
+.Fn quotactl
+call will fail if:
+.Bl -tag -width ENAMETOOLONGAA
+.It Bq Er EOPNOTSUPP
+The kernel has not been compiled with the
+.Dv QUOTA
+option.
+.It Bq Er EUSERS
+The quota table cannot be expanded.
+.It Bq Er EINVAL
+.Fa Cmd
+or the command type is invalid.
+.It Bq Er EINVAL
+A pathname contains a character with the high-order bit set.
+.It Bq Er EACCES
+In
+.Dv Q_QUOTAON ,
+the quota file is not a plain file.
+.It Bq Er EACCES
+Search permission is denied for a component of a path prefix.
+.It Bq Er ENOTDIR
+A component of a path prefix was not a directory.
+.It Bq Er ENAMETOOLONG
+A component of either pathname exceeded 255 characters,
+or the entire length of either path name exceeded 1023 characters.
+.It Bq Er ENOENT
+A filename does not exist.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating a pathname.
+.It Bq Er EROFS
+In
+.Dv Q_QUOTAON ,
+the quota file resides on a read-only filesystem.
+.It Bq Er EIO
+An
+.Tn I/O
+error occurred while reading from or writing
+to a file containing quotas.
+.It Bq Er EFAULT
+An invalid
+.Fa addr
+was supplied; the associated structure could not be copied in or out
+of the kernel.
+.It Bq Er EFAULT
+.Fa Path
+points outside the process's allocated address space.
+.It Bq Er EPERM
+The call was privileged and the caller was not the super-user.
+.El
+.Sh SEE ALSO
+.Xr quota 1 ,
+.Xr fstab 5 ,
+.Xr edquota 8 ,
+.Xr quotacheck 8 ,
+.Xr quotaon 8 ,
+.Xr repquota 8
+.Sh BUGS
+There should be some way to integrate this call with the resource
+limit interface provided by
+.Xr setrlimit 2
+and
+.Xr getrlimit 2 .
+.Sh HISTORY
+The
+.Nm quotactl
+function call appeared in
+.Bx 4.3 Reno .
diff --git a/lib/libc/sys/read.2 b/lib/libc/sys/read.2
new file mode 100644
index 0000000..b94341a
--- /dev/null
+++ b/lib/libc/sys/read.2
@@ -0,0 +1,189 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)read.2	8.4 (Berkeley) 2/26/94
+.\"
+.Dd February 26, 1994
+.Dt READ 2
+.Os BSD 4
+.Sh NAME
+.Nm read ,
+.Nm readv
+.Nd read input
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/uio.h>
+.Fd #include <unistd.h>
+.Ft ssize_t
+.Fn read "int d" "void *buf" "size_t nbytes"
+.Ft ssize_t
+.Fn readv "int d" "const struct iovec *iov" "int iovcnt"
+.Sh DESCRIPTION
+.Fn Read
+attempts to read
+.Fa nbytes
+of data from the object referenced by the descriptor
+.Fa d
+into the buffer pointed to by
+.Fa buf .
+.Fn Readv
+performs the same action, but scatters the input data
+into the 
+.Fa iovcnt
+buffers specified by the members of the
+.Fa iov
+array: iov[0], iov[1], ..., iov[iovcnt\|\-\|1].
+.Pp
+For 
+.Fn readv ,
+the 
+.Fa iovec
+structure is defined as:
+.Pp
+.Bd -literal -offset indent -compact
+struct iovec {
+	void *iov_base;
+	size_t iov_len;
+};
+.Ed
+.Pp
+Each 
+.Fa iovec
+entry specifies the base address and length of an area
+in memory where data should be placed. 
+.Fn Readv
+will always fill an area completely before proceeding
+to the next.
+.Pp
+On objects capable of seeking, the
+.Fn read
+starts at a position
+given by the pointer associated with
+.Fa d
+(see
+.Xr lseek 2 ) .
+Upon return from
+.Fn read ,
+the pointer is incremented by the number of bytes actually read.
+.Pp
+Objects that are not capable of seeking always read from the current
+position.  The value of the pointer associated with such an
+object is undefined.
+.Pp
+Upon successful completion,
+.Fn read
+and
+.Fn readv
+return the number of bytes actually read and placed in the buffer.
+The system guarantees to read the number of bytes requested if
+the descriptor references a normal file that has that many bytes left
+before the end-of-file, but in no other case.
+.Pp
+.Sh RETURN VALUES
+If successful, the
+number of bytes actually read is returned. Upon reading end-of-file,
+zero is returned.
+Otherwise, a -1 is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Read
+and
+.Fn readv
+will succeed unless:
+.Bl -tag -width Er
+.It Bq Er EBADF
+.Fa D
+is not a valid file or socket descriptor open for reading.
+.It Bq Er EFAULT
+.Fa Buf
+points outside the allocated address space.
+.It Bq Er EIO
+An I/O error occurred while reading from the file system.
+.It Bq Er EINTR
+A read from a slow device was interrupted before
+any data arrived by the delivery of a signal.
+.It Bq Er EINVAL
+The pointer associated with
+.Fa d
+was negative.
+.It Bq Er EAGAIN
+The file was marked for non-blocking I/O,
+and no data were ready to be read.
+.El
+.Pp
+In addition, 
+.Fn readv
+may return one of the following errors:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+.Fa Iovcnt
+was less than or equal to 0, or greater than 16.
+.It Bq Er EINVAL
+One of the
+.Fa iov_len
+values in the
+.Fa iov
+array was negative.
+.It Bq Er EINVAL
+The sum of the
+.Fa iov_len
+values in the
+.Fa iov
+array overflowed a 32-bit integer.
+.It Bq Er EFAULT
+Part of the
+.Fa iov
+points outside the process's allocated address space.
+.El
+.Sh SEE ALSO
+.Xr dup 2 ,
+.Xr fcntl 2 ,
+.Xr open 2 ,
+.Xr pipe 2 ,
+.Xr select 2 ,
+.Xr socket 2 ,
+.Xr socketpair 2
+.Sh STANDARDS
+.Fn Read
+is expected to conform to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
+.Sh HISTORY
+The
+.Fn readv
+function call
+appeared in
+.Bx 4.2 .
+A
+.Nm read
+function call
+appeared in
+Version 6 AT&T UNIX.
diff --git a/lib/libc/sys/readlink.2 b/lib/libc/sys/readlink.2
new file mode 100644
index 0000000..4827110
--- /dev/null
+++ b/lib/libc/sys/readlink.2
@@ -0,0 +1,96 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)readlink.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt READLINK 2
+.Os BSD 4.2
+.Sh NAME
+.Nm readlink
+.Nd read value of a symbolic link
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn readlink "const char *path" "char *buf" "int bufsiz"
+.Sh DESCRIPTION
+.Fn Readlink
+places the contents of the symbolic link
+.Fa path
+in the buffer
+.Fa buf ,
+which has size
+.Fa bufsiz .
+.Nm Readlink
+does not append a
+.Dv NUL
+character to
+.Fa buf .
+.Sh RETURN VALUES
+The call returns the count of characters placed in the buffer
+if it succeeds, or a -1 if an error occurs, placing the error
+code in the global variable
+.Va errno .
+.Sh ERRORS
+.Fn Readlink
+will fail if:
+.Bl -tag -width ENAMETOOLONG
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named file does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EINVAL
+The named file is not a symbolic link.
+.It Bq Er EIO
+An I/O error occurred while reading from the file system.
+.It Bq Er EFAULT
+.Fa Buf
+extends outside the process's allocated address space.
+.El
+.Sh SEE ALSO
+.Xr stat 2 ,
+.Xr lstat 2 ,
+.Xr symlink 2
+.Xr symlink 7 ,
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/reboot.2 b/lib/libc/sys/reboot.2
new file mode 100644
index 0000000..0db9ea2
--- /dev/null
+++ b/lib/libc/sys/reboot.2
@@ -0,0 +1,158 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)reboot.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt REBOOT 2
+.Os BSD 4
+.Sh NAME
+.Nm reboot
+.Nd reboot system or halt processor
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Fd #include <sys/reboot.h>
+.Ft int
+.Fn reboot "int howto"
+.Sh DESCRIPTION
+.Fn Reboot
+reboots the system.
+Only the super-user may reboot a machine on demand.
+However, a reboot is invoked
+automatically in the event of unrecoverable system failures.
+.Pp
+.Fa Howto
+is a mask of options; the system call interface allows the following
+options, defined in the include file
+.Aq Pa sys/reboot.h ,
+to be passed
+to the new kernel or the new bootstrap and init programs.
+.Bl -tag -width RB_INITNAMEA
+.It Dv RB_AUTOBOOT
+The default, causing the system to reboot in its usual fashion.
+.It Dv RB_ASKNAME
+Interpreted by the bootstrap program itself, causing it to
+prompt on the console as to what file should be booted.
+Normally, the system is booted from the file
+.Dq Em xx Ns No (0,0)kernel ,
+where
+.Em xx
+is the default disk name,
+without prompting for the file name.
+.It Dv RB_DFLTROOT
+Use the compiled in root device.
+Normally, the system uses the device from which it was booted
+as the root device if possible.
+(The default behavior is dependent on the ability of the bootstrap program
+to determine the drive from which it was loaded, which is not possible
+on all systems.)
+.It Dv RB_DUMP
+Dump kernel memory before rebooting; see
+.Xr savecore 8
+for more information.
+.It Dv RB_HALT
+the processor is simply halted; no reboot takes place.
+This option should be used with caution.
+.It Dv RB_INITNAME
+An option allowing the specification of an init program (see
+.Xr init 8 )
+other than
+.Pa /sbin/init
+to be run when the system reboots.
+This switch is not currently available.
+.It Dv RB_KDB
+Load the symbol table and enable a built-in debugger in the system.
+This option will have no useful function if the kernel is not configured
+for debugging.
+Several other options have different meaning if combined
+with this option, although their use may not be possible
+via the
+.Fn reboot
+call.
+See
+.Xr kadb 4
+for more information.
+.It Dv RB_NOSYNC
+Normally, the disks are sync'd (see
+.Xr sync 8 )
+before the processor is halted or rebooted.
+This option may be useful if file system changes have been made manually
+or if the processor is on fire.
+.It Dv RB_RDONLY
+Initially mount the root file system read-only.
+This is currently the default, and this option has been deprecated.
+.It Dv RB_SINGLE
+Normally, the reboot procedure involves an automatic disk consistency
+check and then multi-user operations.
+.Dv RB_SINGLE
+prevents this, booting the system with a single-user shell
+on the console.
+.Dv RB_SINGLE
+is actually interpreted by the
+.Xr init 8
+program in the newly booted system.
+.Pp
+When no options are given (i.e.,
+.Dv RB_AUTOBOOT
+is used), the system is
+rebooted from file ``kernel'' in the root file system of unit 0
+of a disk chosen in a processor specific way.
+An automatic consistency check of the disks is normally performed
+(see
+.Xr fsck 8 ) .
+.El
+.Sh RETURN VALUES
+If successful, this call never returns.
+Otherwise, a -1 is returned and an error is returned in the global
+variable
+.Va errno .
+.Sh ERRORS
+.Bl -tag -width Er
+.It Bq Er EPERM
+The caller is not the super-user.
+.El
+.Sh SEE ALSO
+.Xr kadb 4 ,
+.Xr crash 8 ,
+.Xr halt 8 ,
+.Xr init 8 ,
+.Xr reboot 8 ,
+.Xr savecore 8
+.Sh BUGS
+The HP300 implementation supports neither
+.Dv RB_DFLTROOT
+nor
+.Dv RB_KDB .
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.0 .
diff --git a/lib/libc/sys/recv.2 b/lib/libc/sys/recv.2
new file mode 100644
index 0000000..9ed24a3
--- /dev/null
+++ b/lib/libc/sys/recv.2
@@ -0,0 +1,263 @@
+.\" Copyright (c) 1983, 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)recv.2	8.3 (Berkeley) 2/21/94
+.\"
+.Dd February 21, 1994
+.Dt RECV 2
+.Os BSD 4.3r
+.Sh NAME
+.Nm recv ,
+.Nm recvfrom ,
+.Nm recvmsg
+.Nd receive a message from a socket
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/socket.h>
+.Ft ssize_t
+.Fn recv "int s" "void *buf" "size_t len" "int flags"
+.Ft ssize_t
+.Fn recvfrom "int s" "void *buf" "size_t len" "int flags" "struct sockaddr *from" "int *fromlen"
+.Ft ssize_t
+.Fn recvmsg "int s" "struct msghdr *msg" "int flags"
+.Sh DESCRIPTION
+.Fn Recvfrom
+and
+.Fn recvmsg
+are used to receive messages from a socket,
+and may be used to receive data on a socket whether or not
+it is connection-oriented.
+.Pp
+If
+.Fa from
+is non-nil, and the socket is not connection-oriented,
+the source address of the message is filled in.
+.Fa Fromlen
+is a value-result parameter, initialized to the size of
+the buffer associated with
+.Fa from ,
+and modified on return to indicate the actual size of the
+address stored there.
+.Pp
+The 
+.Fn recv
+call is normally used only on a 
+.Em connected
+socket (see
+.Xr connect 2 )
+and is identical to
+.Fn recvfrom
+with a nil
+.Fa from
+parameter.
+As it is redundant, it may not be supported in future releases.
+.Pp
+All three routines return the length of the message on successful
+completion.
+If a message is too long to fit in the supplied buffer,
+excess bytes may be discarded depending on the type of socket
+the message is received from (see
+.Xr socket 2 ) .
+.Pp
+If no messages are available at the socket, the
+receive call waits for a message to arrive, unless
+the socket is nonblocking (see
+.Xr fcntl 2 )
+in which case the value
+-1 is returned and the external variable
+.Va errno
+set to
+.Er EAGAIN .
+The receive calls normally return any data available,
+up to the requested amount,
+rather than waiting for receipt of the full amount requested;
+this behavior is affected by the socket-level options
+.Dv SO_RCVLOWAT
+and
+.Dv SO_RCVTIMEO
+described in
+.Xr getsockopt 2 .
+.Pp
+The
+.Xr select 2
+call may be used to determine when more data arrive.
+.Pp
+The
+.Fa flags
+argument to a recv call is formed by 
+.Em or Ap ing
+one or more of the values:
+.Bl -column MSG_WAITALL -offset indent
+.It Dv MSG_OOB Ta process out-of-band data
+.It Dv MSG_PEEK Ta peek at incoming message
+.It Dv MSG_WAITALL Ta wait for full request or error
+.El
+The
+.Dv MSG_OOB
+flag requests receipt of out-of-band data
+that would not be received in the normal data stream.
+Some protocols place expedited data at the head of the normal
+data queue, and thus this flag cannot be used with such protocols.
+The MSG_PEEK flag causes the receive operation to return data
+from the beginning of the receive queue without removing that
+data from the queue.
+Thus, a subsequent receive call will return the same data.
+The MSG_WAITALL flag requests that the operation block until
+the full request is satisfied.
+However, the call may still return less data than requested
+if a signal is caught, an error or disconnect occurs,
+or the next data to be received is of a different type than that returned.
+.Pp
+The
+.Fn recvmsg
+call uses a 
+.Fa msghdr
+structure to minimize the number of directly supplied parameters.
+This structure has the following form, as defined in
+.Ao Pa sys/socket.h Ac :
+.Pp
+.Bd -literal
+struct msghdr {
+	caddr_t	msg_name;	/* optional address */
+	u_int	msg_namelen;	/* size of address */
+	struct	iovec *msg_iov;	/* scatter/gather array */
+	u_int	msg_iovlen;	/* # elements in msg_iov */
+	caddr_t	msg_control;	/* ancillary data, see below */
+	u_int	msg_controllen; /* ancillary data buffer len */
+	int	msg_flags;	/* flags on received message */
+};
+.Ed
+.Pp
+Here
+.Fa msg_name
+and
+.Fa msg_namelen
+specify the destination address if the socket is unconnected;
+.Fa msg_name
+may be given as a null pointer if no names are desired or required.
+.Fa Msg_iov
+and
+.Fa msg_iovlen
+describe scatter gather locations, as discussed in
+.Xr read 2 .
+.Fa Msg_control ,
+which has length
+.Fa msg_controllen ,
+points to a buffer for other protocol control related messages
+or other miscellaneous ancillary data.
+The messages are of the form:
+.Bd -literal
+struct cmsghdr {
+	u_int	cmsg_len;	/* data byte count, including hdr */
+	int	cmsg_level;	/* originating protocol */
+	int	cmsg_type;	/* protocol-specific type */
+/* followed by
+	u_char	cmsg_data[]; */
+};
+.Ed
+As an example, one could use this to learn of changes in the data-stream
+in XNS/SPP, or in ISO, to obtain user-connection-request data by requesting
+a recvmsg with no data buffer provided immediately after an
+.Fn accept
+call.
+.Pp
+Open file descriptors are now passed as ancillary data for
+.Dv AF_UNIX
+domain sockets, with
+.Fa cmsg_level
+set to
+.Dv SOL_SOCKET
+and
+.Fa cmsg_type
+set to
+.Dv SCM_RIGHTS .
+.Pp
+The
+.Fa msg_flags
+field is set on return according to the message received.
+.Dv MSG_EOR
+indicates end-of-record;
+the data returned completed a record (generally used with sockets of type
+.Dv SOCK_SEQPACKET ) .
+.Dv MSG_TRUNC
+indicates that
+the trailing portion of a datagram was discarded because the datagram
+was larger than the buffer supplied.
+.Dv MSG_CTRUNC
+indicates that some
+control data were discarded due to lack of space in the buffer
+for ancillary data.
+.Dv MSG_OOB
+is returned to indicate that expedited or out-of-band data were received.
+.Pp
+.Sh RETURN VALUES
+These calls return the number of bytes received, or -1
+if an error occurred.
+.Sh ERRORS
+The calls fail if:
+.Bl -tag -width ENOTCONNAA
+.It Bq Er EBADF
+The argument
+.Fa s
+is an invalid descriptor.
+.It Bq Er ENOTCONN
+The socket is associated with a connection-oriented protocol
+and has not been connected (see
+.Xr connect 2
+and
+.Xr accept 2 ).
+.It Bq Er ENOTSOCK
+The argument
+.Fa s
+does not refer to a socket.
+.It Bq Er EAGAIN
+The socket is marked non-blocking, and the receive operation
+would block, or
+a receive timeout had been set,
+and the timeout expired before data were received.
+.It Bq Er EINTR
+The receive was interrupted by delivery of a signal before
+any data were available.
+.It Bq Er EFAULT
+The receive buffer pointer(s) point outside the process's
+address space.
+.El
+.Sh SEE ALSO
+.Xr fcntl 2 ,
+.Xr read 2 ,
+.Xr select 2 ,
+.Xr getsockopt 2 ,
+.Xr socket 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/rename.2 b/lib/libc/sys/rename.2
new file mode 100644
index 0000000..be47d58
--- /dev/null
+++ b/lib/libc/sys/rename.2
@@ -0,0 +1,199 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)rename.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt RENAME 2
+.Os BSD 4.2
+.Sh NAME
+.Nm rename
+.Nd change the name of a file
+.Sh SYNOPSIS
+.Fd #include <stdio.h>
+.Ft int
+.Fn rename "const char *from" "const char *to"
+.Sh DESCRIPTION
+.Fn Rename
+causes the link named
+.Fa from
+to be renamed as
+.Fa to .
+If 
+.Fa to
+exists, it is first removed.
+Both 
+.Fa from
+and
+.Fa to
+must be of the same type (that is, both directories or both
+non-directories), and must reside on the same file system.
+.Pp
+.Fn Rename
+guarantees that an instance of
+.Fa to
+will always exist, even if the system should crash in
+the middle of the operation.
+.Pp
+If the final component of
+.Fa from
+is a symbolic link,
+the symbolic link is renamed,
+not the file or directory to which it points.
+.Sh CAVEAT
+The system can deadlock if a loop in the file system graph is present.
+This loop takes the form of an entry in directory
+.Ql Pa a ,
+say
+.Ql Pa a/foo ,
+being a hard link to directory
+.Ql Pa b ,
+and an entry in
+directory
+.Ql Pa b ,
+say
+.Ql Pa b/bar ,
+being a hard link
+to directory
+.Ql Pa a .
+When such a loop exists and two separate processes attempt to
+perform
+.Ql rename a/foo b/bar
+and
+.Ql rename b/bar a/foo ,
+respectively, 
+the system may deadlock attempting to lock
+both directories for modification.
+Hard links to directories should be
+replaced by symbolic links by the system administrator.
+.Sh RETURN VALUES
+A 0 value is returned if the operation succeeds, otherwise
+.Fn rename
+returns -1 and the global variable 
+.Va errno
+indicates the reason for the failure.
+.Sh ERRORS
+.Fn Rename
+will fail and neither of the argument files will be
+affected if:
+.Bl -tag -width ENAMETOOLONG
+.It Bq Er EINVAL
+Either pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of either pathname exceeded 255 characters,
+or the entire length of either path name exceeded 1023 characters.
+.It Bq Er ENOENT
+A component of the
+.Fa from
+path does not exist,
+or a path prefix of
+.Fa to
+does not exist.
+.It Bq Er EACCES
+A component of either path prefix denies search permission.
+.It Bq Er EACCES
+The requested link requires writing in a directory with a mode
+that denies write permission.
+.It Bq Er EPERM
+The directory containing
+.Fa from
+is marked sticky,
+and neither the containing directory nor
+.Fa from
+are owned by the effective user ID.
+.It Bq Er EPERM
+The
+.Fa to
+file exists,
+the directory containing
+.Fa to
+is marked sticky,
+and neither the containing directory nor
+.Fa to
+are owned by the effective user ID.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating either pathname.
+.It Bq Er ENOTDIR
+A component of either path prefix is not a directory.
+.It Bq Er ENOTDIR
+.Fa from
+is a directory, but
+.Fa to
+is not a directory.
+.It Bq Er EISDIR
+.Fa to
+is a directory, but
+.Fa from
+is not a directory.
+.It Bq Er EXDEV
+The link named by
+.Fa to
+and the file named by
+.Fa from
+are on different logical devices (file systems).  Note that this error
+code will not be returned if the implementation permits cross-device
+links.
+.It Bq Er ENOSPC
+The directory in which the entry for the new name is being placed
+cannot be extended because there is no space left on the file
+system containing the directory.
+.It Bq Er EDQUOT
+The directory in which the entry for the new name
+is being placed cannot be extended because the
+user's quota of disk blocks on the file system
+containing the directory has been exhausted.
+.It Bq Er EIO
+An I/O error occurred while making or updating a directory entry.
+.It Bq Er EROFS
+The requested link requires writing in a directory on a read-only file
+system.
+.It Bq Er EFAULT
+.Em Path
+points outside the process's allocated address space.
+.It Bq Er EINVAL
+.Fa From
+is a parent directory of
+.Fa to ,
+or an attempt is made to rename
+.Ql \&.
+or
+.Ql \&.. .
+.It Bq Er ENOTEMPTY
+.Fa To
+is a directory and is not empty.
+.El
+.Sh SEE ALSO
+.Xr open 2
+.Xr symlink 7
+.Sh STANDARDS
+.Fn Rename
+conforms to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
diff --git a/lib/libc/sys/revoke.2 b/lib/libc/sys/revoke.2
new file mode 100644
index 0000000..e782874
--- /dev/null
+++ b/lib/libc/sys/revoke.2
@@ -0,0 +1,105 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Berkeley Software Design, Inc.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)revoke.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt REVOKE 2
+.Os
+.Sh NAME
+.Nm revoke
+.Nd revoke file access
+.Sh SYNOPSIS
+.Ft int
+.Fn revoke "char *path"
+.Sh DESCRIPTION
+The
+.Nm revoke
+function invalidates all current open file descriptors in the system
+for the file named by
+.Fa path .
+Subsequent operations on any such descriptors
+fail, with the exceptions that a
+.Fn read
+from a character device file which has been revoked
+returns a count of zero (end of file),
+and a
+.Fn close
+call will succeed.
+If the file is a special file for a device which is open,
+the device close function
+is called as if all open references to the file had been closed.
+.Pp
+Access to a file may be revoked only by its owner or the super user.
+The
+.Nm revoke
+function is currently supported only for block and character special
+device files.
+It is normally used to prepare a terminal device for a new login session,
+preventing any access by a previous user of the terminal.
+.Sh RETURN VALUES
+A 0 value indicated that the call succeeded.  A \-1 return value
+indicates an error occurred and
+.Va errno
+is set to indicated the reason.
+.Sh ERRORS
+Access to the named file is revoked unless one of the following:
+.Bl -tag -width Er
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1024 characters.
+.It Bq Er ENOENT
+The named file or a component of the path name does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EFAULT
+.Fa Path
+points outside the process's allocated address space.
+.It Bq Er EINVAL
+The named file is neither a character special or block
+special file.
+.It Bq Er EPERM
+The caller is neither the owner of the file nor the super user.
+.El
+.Sh SEE ALSO
+.Xr close 2
+.Sh HISTORY
+The
+.Nm revoke
+function was introduced in
+.Bx 4.3 Reno .
diff --git a/lib/libc/sys/rmdir.2 b/lib/libc/sys/rmdir.2
new file mode 100644
index 0000000..29f8833
--- /dev/null
+++ b/lib/libc/sys/rmdir.2
@@ -0,0 +1,106 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)rmdir.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt RMDIR 2
+.Os BSD 4.2
+.Sh NAME
+.Nm rmdir
+.Nd remove a directory file
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn rmdir "const char *path"
+.Sh DESCRIPTION
+.Fn Rmdir
+removes a directory file
+whose name is given by
+.Fa path .
+The directory must not have any entries other
+than
+.Ql \&.
+and
+.Ql \&.. .
+.Sh RETURN VALUES
+A 0 is returned if the remove succeeds; otherwise a -1 is
+returned and an error code is stored in the global location
+.Va errno .
+.Sh ERRORS
+The named file is removed unless:
+.Bl -tag -width [ENAMETOOLONG]
+.It Bq Er ENOTDIR
+A component of the path is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named directory does not exist.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er ENOTEMPTY
+The named directory contains files other than
+.Ql \&.
+and
+.Ql \&..
+in it.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er EACCES
+Write permission is denied on the directory containing the link
+to be removed.
+.It Bq Er EPERM
+The directory containing the directory to be removed is marked sticky,
+and neither the containing directory nor the directory to be removed
+are owned by the effective user ID.
+.It Bq Er EBUSY
+The directory to be removed is the mount point
+for a mounted file system.
+.It Bq Er EIO
+An I/O error occurred while deleting the directory entry
+or deallocating the inode.
+.It Bq Er EROFS
+The directory entry to be removed resides on a read-only file system.
+.It Bq Er EFAULT
+.Fa Path
+points outside the process's allocated address space.
+.El
+.Sh SEE ALSO
+.Xr mkdir 2 ,
+.Xr unlink 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/rtprio.2 b/lib/libc/sys/rtprio.2
new file mode 100644
index 0000000..c9957fd
--- /dev/null
+++ b/lib/libc/sys/rtprio.2
@@ -0,0 +1,106 @@
+.\" Copyright (c) 1994, Henrik Vestergaard Draboel
+.\" All rights reserved.
+.\" 
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\" 	This product includes software developed by Henrik Vestergaard Draboel.
+.\" 4. The name of the author may not be used to endorse or promote products
+.\"    derived from this software without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\" 
+.\" $Id: $
+.\"
+.Dd July 23, 1994
+.Dt RTPRIO 2
+.Sh NAME
+.Nm rtprio
+.Nd examine or modify a process realtime or idle priority
+.Sh SYNOPSIS
+.Fd #include <sys/resource.h>
+.Fd #include <sys/rtprio.h>
+.Ft int 
+.Fn rtprio "function" "pid_t pid" "struct rtprio *rtp"
+.Sh DESCRIPTION
+.Fn rtprio
+is used to lookup or change the realtime or idle priority of a process.
+
+.Fa function
+specifies the operation to be performed. RTP_LOOKUP to lookup the current priority, 
+and RTP_SET to set the priority.
+.Fa pid
+specifies the process to be used, 0 for the current process.
+
+.Fa *rtp
+is a pointer to a struct rtprio which is used to specify the priority and priority type. 
+This structure has the following form:
+.Bd -literal
+struct rtprio {
+	u_short	type;
+	u_short prio;
+};
+.Ed
+.Pp
+The value of the
+.Nm type
+field may be RTP_PRIO_REALTIME for realtime priorities,
+RTP_PRIO_NORMAL for normal priorities, and RTP_PRIO_IDLE for idle priorities.
+The priority specified by the
+.Nm prio
+field ranges between 0 and  
+.Dv RTP_PRIO_MAX (usually 31) .
+0 is the highest possible priority.
+
+Realtime and idle priority is inherited through fork() and exec().
+
+A realtime process can only be preempted by a process of equal or
+higher priority, or by an interrupt; idle priority processes will run only
+when no other real/normal priority process is runnable. Higher real/idle priority processes
+preempt lower real/idle priority processes. Processes of equal real/idle priority are run round-robin.
+.Sh RETURN VALUES
+.Fn rtprio
+will return 0 for success and -1 for all errors. The global variable
+.Va errno
+will be set to indicate the error.
+.Sh ERRORS
+.Fn rtprio
+will fail if 
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The specified
+.Fa prio
+was out of range.
+.It Bq Er EPERM
+The calling process is not allowed to set the realtime priority. Only
+root is allowed to change the realtime priority of any process, and non-root
+may only change the idle priority of the current process.
+.It Bq Er ESRCH
+The specified process was not found.
+.Sh AUTHOR
+The original author was Henrik Vestergaard Draboel - hvd@terry.ping.dk. This
+implementation in FreeBSD was substantially rewritten by David Greenman.
+.Sh SEE ALSO
+.Xr rtprio 1 ,
+.Xr nice 1 ,
+.Xr ps 1 ,
+.Xr nice 2 ,
+.Xr renice 8
+
diff --git a/lib/libc/sys/select.2 b/lib/libc/sys/select.2
new file mode 100644
index 0000000..e923ea4
--- /dev/null
+++ b/lib/libc/sys/select.2
@@ -0,0 +1,188 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)select.2	8.2 (Berkeley) 3/25/94
+.\"
+.Dd March 25, 1994
+.Dt SELECT 2
+.Os BSD 4.2
+.Sh NAME
+.Nm select
+.Nd synchronous I/O multiplexing
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/time.h>
+.Fd #include <unistd.h>
+.Ft int
+.Fn select "int nfds" "fd_set *readfds" "fd_set *writefds" "fd_set *exceptfds" "struct timeval *timeout"
+.Fn FD_SET fd &fdset
+.Fn FD_CLR fd &fdset
+.Fn FD_ISSET fd &fdset
+.Fn FD_ZERO &fdset
+.Sh DESCRIPTION
+.Fn Select
+examines the I/O descriptor sets whose addresses are passed in
+.Fa readfds ,
+.Fa writefds ,
+and
+.Fa exceptfds
+to see if some of their descriptors
+are ready for reading, are ready for writing, or have an exceptional
+condition pending, respectively.
+The first
+.Fa nfds
+descriptors are checked in each set;
+i.e., the descriptors from 0 through
+.Fa nfds Ns No -1
+in the descriptor sets are examined.
+On return,
+.Fn select
+replaces the given descriptor sets
+with subsets consisting of those descriptors that are ready
+for the requested operation.
+.Fn Select
+returns the total number of ready descriptors in all the sets.
+.Pp
+The descriptor sets are stored as bit fields in arrays of integers.
+The following macros are provided for manipulating such descriptor sets:
+.Fn FD_ZERO &fdsetx
+initializes a descriptor set
+.Fa fdset
+to the null set.
+.Fn FD_SET fd &fdset
+includes a particular descriptor
+.Fa fd
+in
+.Fa fdset .
+.Fn FD_CLR fd &fdset
+removes
+.Fa fd
+from
+.Fa fdset .
+.Fn FD_ISSET fd &fdset
+is non-zero if
+.Fa fd
+is a member of
+.Fa fdset ,
+zero otherwise.
+The behavior of these macros is undefined if
+a descriptor value is less than zero or greater than or equal to
+.Dv FD_SETSIZE ,
+which is normally at least equal
+to the maximum number of descriptors supported by the system.
+.Pp
+If
+.Fa timeout
+is a non-nil pointer, it specifies a maximum interval to wait for the
+selection to complete.  If 
+.Fa timeout
+is a nil pointer, the select blocks indefinitely.  To affect a poll, the
+.Fa timeout
+argument should be non-nil, pointing to a zero-valued timeval structure.
+.Pp
+Any of
+.Fa readfds ,
+.Fa writefds ,
+and
+.Fa exceptfds
+may be given as nil pointers if no descriptors are of interest.
+.Sh RETURN VALUES
+.Fn Select
+returns the number of ready descriptors that are contained in
+the descriptor sets,
+or -1 if an error occurred.
+If the time limit expires,
+.Fn select
+returns 0.
+If
+.Fn select
+returns with an error,
+including one due to an interrupted call,
+the descriptor sets will be unmodified.
+.Sh ERRORS
+An error return from
+.Fn select
+indicates:
+.Bl -tag -width Er
+.It Bq Er EBADF
+One of the descriptor sets specified an invalid descriptor.
+.It Bq Er EINTR
+A signal was delivered before the time limit expired and
+before any of the selected events occurred.
+.It Bq Er EINVAL
+The specified time limit is invalid.  One of its components is
+negative or too large.
+.El
+.Sh SEE ALSO
+.Xr accept 2 ,
+.Xr connect 2 ,
+.Xr getdtablesize 2 ,
+.Xr gettimeofday 2 ,
+.Xr read 2 ,
+.Xr recv 2 ,
+.Xr send 2 ,
+.Xr write 2
+.Sh BUGS
+Although the provision of
+.Xr getdtablesize 2
+was intended to allow user programs to be written independent
+of the kernel limit on the number of open files, the dimension
+of a sufficiently large bit field for select remains a problem.
+The default size
+.Dv FD_SETSIZE
+(currently 256) is somewhat larger than
+the current kernel limit to the number of open files.
+However, in order to accommodate programs which might potentially
+use a larger number of open files with select, it is possible
+to increase this size within a kernel by providing
+a larger definition of
+.Dv FD_SETSIZE
+in kernel configuration file and rebuilding a kernel.
+To increase default limit user program must define its own
+.Dv FD_SETSIZE
+which is less or equal new kernel
+.Dv FD_SETSIZE
+before the inclusion of any header which includes
+.Aq Pa sys/types.h .
+.Pp
+.Fn Select
+should probably return the time remaining from the original timeout,
+if any, by modifying the time value in place.
+This may be implemented in future versions of the system.
+Thus, it is unwise to assume that the timeout value will be unmodified
+by the
+.Fn select
+call.
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/semctl.2 b/lib/libc/sys/semctl.2
new file mode 100644
index 0000000..fe60ce0
--- /dev/null
+++ b/lib/libc/sys/semctl.2
@@ -0,0 +1,173 @@
+.\"
+.\" Copyright (c) 1995 David Hovemeyer <daveho@infocom.com>
+.\"
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.\" $Id$
+.\"
+.Dd September 12, 1995
+.Dt SEMCTL 2
+.Os FreeBSD
+.Sh NAME
+.Nm semctl
+.Nd control operations on a semaphore set
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/ipc.h>
+.Fd #include <sys/sem.h>
+.Ft int
+.Fn "semctl" "int semid" "int semnum" "int cmd" "union semun arg"
+.Sh DESCRIPTION
+.Fn Semctl
+performs the operation indicated by
+.Fa cmd
+on the semaphore set indicated by
+.Fa semid .
+For the commands that use the
+.Fa arg
+parameter,
+.Fa "union semun"
+is defined as follows:
+.Bd -literal
+.\"
+.\" From <sys/sem.h>:
+.\"
+union semun {
+        int     val;            /* value for SETVAL */
+        struct  semid_ds *buf;  /* buffer for IPC_STAT & IPC_SET */
+        u_short *array;         /* array for GETALL & SETALL */
+};
+.Ed
+.Pp
+Commands are performed as follows:
+.\"
+.\" This section based on Stevens, _Advanced Programming in the UNIX
+.\" Environment_.
+.\"
+.Bl -tag -width IPC_RMIDXXX
+.It Dv IPC_STAT
+Fetch the semaphore set's
+.Fa "struct semid_ds" ,
+storing it in the memory pointed to by
+.Fa arg.buf .
+.It Dv IPC_SET
+Changes the
+.Fa sem_perm.uid ,
+.Fa sem_perm.gid ,
+and
+.Fa sem_perm.mode
+members of the semaphore set's
+.Fa "struct semid_ds"
+to match those of the struct pointed to by
+.Fa arg.buf .
+The calling process's effective uid must
+match either
+.Fa sem_perm.uid
+or
+.Fa sem_perm.cuid ,
+or it must have superuser privileges.
+.It IPC_RMID
+Immediately removes the semaphore set from the system.  The calling
+process's effictive uid must equal the semaphore set's
+.Fa sem_perm.uid
+or
+.Fa sem_perm.cuid ,
+or the process must have superuser priviliges.
+.It Dv GETVAL
+Return the value of semaphore number
+.Fa semnum .
+.It Dv SETVAL
+Set the value of semaphore number
+.Fa semnum
+to
+.Fa arg.val .
+.It Dv GETPID
+Return the pid of the last process to perform an operation on
+semaphore number
+.Fa semnum .
+.It Dv GETNCNT
+Return the number of processes waiting for semaphore number
+.Fa semnum Ns 's
+value to become greater than its current value.
+.It Dv GETZCNT
+Return the number of processes waiting for semaphore number
+.Fa semnum Ns 's
+value to become 0.
+.It Dv GETALL
+Fetch the value of all of the semaphores in the set into the
+array pointed to by
+.Fa arg.array .
+.It Dv SETALL
+Set the values of all of the semaphores in the set to the values
+in the array pointed to by
+.Fa arg.array .
+.El
+.Pp
+The
+.Fa "struct semid_ds"
+is defined as follows:
+.Bd -literal
+.\"
+.\" Taken straight from <sys/sem.h>.
+.\"
+struct semid_ds {
+        struct  ipc_perm sem_perm;      /* operation permission struct */
+        struct  sem *sem_base;  /* pointer to first semaphore in set */
+        u_short sem_nsems;      /* number of sems in set */
+        time_t  sem_otime;      /* last operation time */
+        long    sem_pad1;       /* SVABI/386 says I need this here */
+        time_t  sem_ctime;      /* last change time */
+                                /* Times measured in secs since */
+                                /* 00:00:00 GMT, Jan. 1, 1970 */
+        long    sem_pad2;       /* SVABI/386 says I need this here */
+        long    sem_pad3[4];    /* SVABI/386 says I need this here */
+};
+.Ed
+.Sh RETURN VALUES
+On success, when
+.Fa cmd
+is one of GETVAL, GETNCNT, or GETZCNT,
+.Fn semctl
+returns the corresponding value; otherwise, 0 is returned.
+On failure, -1 is returned, and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Semctl
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+No semaphore set corresponds to
+.Fa semid .
+.It Bq Er EINVAL
+.Fa semnum
+is not in the range of valid semaphores for given semaphore set.
+.It Bq Er EPERM
+The calling process's effective uid does not match the uid of
+the semaphore set's owner or creator.
+.It Bq Er EACCES
+Permission denied due to mismatch between operation and mode of
+semaphore set.
+.Sh SEE ALSO
+.Xr semget 2 ,
+.Xr semop 2
diff --git a/lib/libc/sys/semget.2 b/lib/libc/sys/semget.2
new file mode 100644
index 0000000..323aef4
--- /dev/null
+++ b/lib/libc/sys/semget.2
@@ -0,0 +1,137 @@
+.\"
+.\" Copyright (c) 1995 David Hovemeyer <daveho@infocom.com>
+.\"
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.\" $Id$
+.\"
+.Dd September 12, 1995
+.Dt SEMGET 2
+.Os FreeBSD
+.Sh NAME
+.Nm semget
+.Nd obtain a semaphore id
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/ipc.h>
+.Fd #include <sys/sem.h>
+.Ft int
+.Fn "semget" "key_t key" "int nsems" "int flag"
+.Sh DESCRIPTION
+Based on the values of
+.Fa key
+and
+.Fa flag ,
+.Fn semget
+returns the identifier of a newly created or previously existing
+set of semaphores.
+.\"
+.\" This is copied verbatim from the shmget manpage.  Perhaps
+.\" it should go in a common manpage, such as .Xr ipc 2
+.\"
+The key
+is analogous to a filename: it provides a handle that names an
+IPC object.  There are three ways to specify a key:
+.Bl -bullet
+.It
+IPC_PRIVATE may be specified, in which case a new IPC object
+will be created.
+.It
+An integer constant may be specified.  If no IPC object corresponding
+to
+.Fa key
+is specified and the IPC_CREAT bit is set in
+.Fa flag ,
+a new one will be created.
+.It
+.Fn ftok
+may be used to generate a key from a pathname.  See
+.Xr ftok 3 .
+.El
+.\"
+.\" Likewise for this section, except SHM_* becomes SEM_*.
+.\"
+.Pp
+The mode of a newly created IPC object is determined by
+.Em OR Ns 'ing
+the following constants into the
+.Fa flag
+parameter:
+.Bl -tag -width XSEM_WXX6XXX
+.It Dv SEM_R
+Read access for user.
+.It Dv SEM_W
+Write access for user.
+.It Dv (SEM_R>>3)
+Read access for group.
+.It Dv (SEM_W>>3)
+Write access for group.
+.It Dv (SEM_R>>6)
+Read access for other.
+.It Dv (SEM_W>>6)
+Write access for other.
+.El
+.Pp
+If a new set of semaphores is being created,
+.Fa nsems
+is used to indicate the number of semaphores the set should contain.
+Otherwise,
+.Fa nsems
+may be specified as 0.
+.Sh RETURN VALUES
+.Fn Semget
+returns the id of a semaphore set if successful; otherwise, -1
+is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Semget
+will fail if:
+.Bl -tag -width Er
+.\" ipcperm could fail (we're opening to read and write, as it were)
+.It Bq Er EACCES
+Access permission failure.
+.\"
+.\" sysv_sem.c is quite explicit about these, so I'm pretty sure
+.\" this is accurate
+.\"
+.It Bq Er EEXIST
+IPC_CREAT and IPC_EXCL were specified, and a semaphore set
+corresponding to
+.Fa key
+already exists.
+.It Bq Er EINVAL
+The number of semaphores requested exceeds the system imposed maximum
+per set.
+.It Bq Er ENOSPC
+Insufficiently many semaphores are available.
+.It Bq Er ENOSPC
+The kernel could not allocate a
+.Fa "struct semid_ds" .
+.It Bq Er ENOENT
+No semaphore set was found corresponding to
+.Fa key ,
+and IPC_CREAT was not specified.
+.Sh SEE ALSO
+.Xr semctl 2 ,
+.Xr semop 2
diff --git a/lib/libc/sys/semop.2 b/lib/libc/sys/semop.2
new file mode 100644
index 0000000..74fa01b
--- /dev/null
+++ b/lib/libc/sys/semop.2
@@ -0,0 +1,192 @@
+.\"
+.\" Copyright (c) 1995 David Hovemeyer <daveho@infocom.com>
+.\"
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.\" $Id$
+.\"
+.Dd September 22, 1995
+.Dt SEMOP 2
+.Os FreeBSD
+.Sh NAME
+.Nm semop
+.Nd atomic array of operations on a semaphore set
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/ipc.h>
+.Fd #include <sys/sem.h>
+.Ft int
+.Fn "semop" "int semid" "struct sembuf array[]" "unsigned nops"
+.Sh DESCRIPTION
+.Fn Semop
+atomically performs the array of operations indicated by
+.Fa array
+on the semaphore set indicated by
+.Fa semid .
+The length of
+.Fa array
+is indicated by
+.Fa nops .
+Each operation is encoded in a
+.Fa "struct sembuf" ,
+which is defined as follows:
+.Bd -literal
+.\"
+.\" From <sys/sem.h>
+.\"
+struct sembuf {
+        u_short sem_num;        /* semaphore # */
+        short   sem_op;         /* semaphore operation */
+        short   sem_flg;        /* operation flags */
+};
+.Ed
+.Pp
+For each element in
+.Fa array ,
+.Fa sem_op
+and
+.Fa sem_flg
+determine an operation to be performed on semaphore number
+.Fa sem_num
+in the set.  The values SEM_UNDO and IPC_NOWAIT may be
+.Em OR Ns 'ed
+into the
+.Fa sem_flg
+member in order to modify the behavior of the given operation.
+.Pp
+The operation performed depends as follows on the value of
+.Fa sem_op :
+.\"
+.\" This section is based on the description of semop() in
+.\" Stevens, _Advanced Programming in the UNIX Environment_.
+.\"
+.Bl -bullet
+.It
+When
+.Fa sem_op
+is positive, the semaphore's value is incremented by
+.Fa sem_op Ns 's
+value.  If SEM_UNDO is specified, the semaphore's adjust on exit
+value is decremented by
+.Fa sem_op Ns 's
+value.  A positive value for
+.Fa sem_op
+generally corresponds to a process releasing a resource
+associated with the semaphore.
+.It
+The behavior when
+.Fa sem_op
+is negative depends on the current value of the semaphore:
+.Bl -bullet
+.It
+If the current value of the semaphore is greater than or equal to
+the absolute value of
+.Fa sem_op ,
+then the value is decremented by the absolute value of
+.Fa sem_op .
+If SEM_UNDO is specified, the semaphore's adjust on exit
+value is incremented by the absolute value of
+.Fa sem_op .
+.It
+If the current value of the semaphore is less than
+.Fa sem_op Ns 's
+value, one of the following happens:
+.\" XXX a *second* sublist?
+.Bl -bullet
+.It
+If IPC_NOWAIT was specifed, then
+.Fn semop
+returns immediately with a return value of EAGAIN.
+.It
+If some other process has removed the semaphore with the IPC_RMID
+option of
+.Fn semctl ,
+then
+.Fn semop
+returns immediately with a return value of EINVAL.
+.It
+Otherwise, the calling process is put to sleep until the semaphore's
+value is greater than or equal to the absolute value of
+.Fa sem_op .
+When this condition becomes true, the semaphore's value is decremented
+by the absolute value of
+.Fa sem_op ,
+and the semaphore's adjust on exit value is incremented by the
+absolute value of
+.Fa sem_op .
+.El
+.Pp
+A negative value for
+.Fa sem_op
+generally means that a process is waiting for a resource to become
+available.
+.El
+.Pp
+.It
+When
+.Fa sem_op
+is zero, the process waits for the semaphore's value to become zero.
+If it is already zero, the call to
+.Fn semop
+can return immediately.  Otherwise, the calling process is put to 
+sleep until the semaphore's value becomes zero.
+.El
+.Pp
+For each semaphore a process has in use, the kernel maintains an
+`adjust on exit' value, as alluded to earlier.  When a process
+exits, either voluntarily or involuntarily, the adjust on exit value
+for each semaphore is added to the semaphore's value.  This can
+be used to insure that a resource is released if a process terminates
+unexpectedly.
+.Sh RETURN VALUES
+On success,
+.Fn semop
+returns 0; otherwise, -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Semop
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+No semaphore set corresponds to
+.Fa semid .
+.It Bq Er EACCES
+Permission denied due to mismatch between operation and mode of
+semaphore set.
+.It Bq Er EAGAIN
+The semaphore's value was less than
+.Fa sem_op ,
+and IPC_NOWAIT was specified.
+.It Bq Er E2BIG
+Too many operations were specified.
+.It Bq Er EFBIG
+.\"
+.\" I'd have thought this would be EINVAL, but the source says
+.\" EFBIG.
+.\"
+.Fa sem_num
+was not in the range of valid semaphores for the set.
+.Sh SEE ALSO
+.Xr semget 2 ,
+.Xr semctl 2
diff --git a/lib/libc/sys/send.2 b/lib/libc/sys/send.2
new file mode 100644
index 0000000..77e2ed8
--- /dev/null
+++ b/lib/libc/sys/send.2
@@ -0,0 +1,179 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     From: @(#)send.2	8.2 (Berkeley) 2/21/94
+.\"	$Id$
+.\"
+.Dd February 15, 1995
+.Dt SEND 2
+.Os BSD 4.2
+.Sh NAME
+.Nm send ,
+.Nm sendto ,
+.Nm sendmsg
+.Nd send a message from a socket
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/socket.h>
+.Ft ssize_t
+.Fn send "int s" "const void *msg" "size_t len" "int flags"
+.Ft ssize_t
+.Fn sendto "int s" "const void *msg" "size_t len" "int flags" "const struct sockaddr *to" "int tolen"
+.Ft ssize_t
+.Fn sendmsg "int s" "const struct msghdr *msg" "int flags"
+.Sh DESCRIPTION
+.Fn Send ,
+.Fn sendto ,
+and
+.Fn sendmsg
+are used to transmit a message to another socket.
+.Fn Send
+may be used only when the socket is in a 
+.Em connected
+state, while 
+.Fn sendto
+and
+.Fn sendmsg
+may be used at any time.
+.Pp
+The address of the target is given by
+.Fa to
+with 
+.Fa tolen
+specifying its size.
+The length of the message is given by
+.Fa len .
+If the message is too long to pass atomically through the
+underlying protocol, the error
+.Er EMSGSIZE
+is returned, and
+the message is not transmitted.
+.Pp
+No indication of failure to deliver is implicit in a
+.Fn send .
+Locally detected errors are indicated by a return value of -1.
+.Pp
+If no messages space is available at the socket to hold
+the message to be transmitted, then
+.Fn send
+normally blocks, unless the socket has been placed in
+non-blocking I/O mode.
+The
+.Xr select 2
+call may be used to determine when it is possible to
+send more data.
+.Pp
+The
+.Fa flags
+parameter may include one or more of the following:
+.Bd -literal
+#define	MSG_OOB		0x1   /* process out-of-band data */
+#define	MSG_PEEK	0x2   /* peek at incoming message */
+#define	MSG_DONTROUTE	0x4   /* bypass routing, use direct interface */
+#define MSG_EOR		0x8   /* data completes record */
+#define	MSG_EOF		0x100 /* data completes transaction */
+.Ed
+.Pp
+The flag
+.Dv MSG_OOB
+is used to send
+.Dq out-of-band
+data on sockets that support this notion (e.g.
+.Dv SOCK_STREAM ) ;
+the underlying protocol must also support
+.Dq out-of-band
+data.
+.Dv MSG_EOR
+is used to indicate a record mark for protocols which support the
+concept.
+.Dv MSG_EOF
+requests that the sender side of a socket be shut down, and that an
+appropriate indication be sent at the end of the specified data;
+this flag is only implemented for
+.Dv SOCK_STREAM
+sockets in the
+.Dv PF_INET
+protocol family, and is used to implement Transaction
+.Tn TCP
+(see
+.Xr ttcp 4 ) .
+.Dv MSG_DONTROUTE
+is usually used only by diagnostic or routing programs.
+.Pp
+See 
+.Xr recv 2
+for a description of the
+.Fa msghdr
+structure.
+.Sh RETURN VALUES
+The call returns the number of characters sent, or -1
+if an error occurred.
+.Sh ERRORS
+.Fn Send ,
+.Fn sendto ,
+and
+.Fn sendmsg
+fail if:
+.Bl -tag -width [EMSGSIZE]
+.It Bq Er EBADF
+An invalid descriptor was specified.
+.It Bq Er ENOTSOCK
+The argument
+.Fa s
+is not a socket.
+.It Bq Er EFAULT
+An invalid user space address was specified for a parameter.
+.It Bq Er EMSGSIZE
+The socket requires that message be sent atomically,
+and the size of the message to be sent made this impossible.
+.It Bq Er EAGAIN
+The socket is marked non-blocking and the requested operation
+would block.
+.It Bq Er ENOBUFS
+The system was unable to allocate an internal buffer.
+The operation may succeed when buffers become available.
+.It Bq Er ENOBUFS
+The output queue for a network interface was full.
+This generally indicates that the interface has stopped sending,
+but may be caused by transient congestion.
+.El
+.Sh SEE ALSO
+.Xr fcntl 2 ,
+.Xr recv 2 ,
+.Xr select 2 ,
+.Xr getsockopt 2 ,
+.Xr socket 2 ,
+.Xr write 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/setgroups.2 b/lib/libc/sys/setgroups.2
new file mode 100644
index 0000000..e20b47e
--- /dev/null
+++ b/lib/libc/sys/setgroups.2
@@ -0,0 +1,83 @@
+.\" Copyright (c) 1983, 1991, 1993, 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)setgroups.2	8.2 (Berkeley) 4/16/94
+.\"
+.Dd April 16, 1994
+.Dt SETGROUPS 2
+.Os BSD 4.2
+.Sh NAME
+.Nm setgroups
+.Nd set group access list
+.Sh SYNOPSIS
+.Fd #include <sys/param.h>
+.Fd #include <unistd.h>
+.Ft int
+.Fn setgroups "int ngroups" "const gid_t *gidset"
+.Sh DESCRIPTION
+.Fn Setgroups
+sets the group access list of the current user process
+according to the array 
+.Fa gidset .
+The parameter
+.Fa ngroups
+indicates the number of entries in the array and must be no
+more than
+.Dv NGROUPS ,
+as defined in
+.Ao Pa sys/param.h Ac .
+.Pp
+Only the super-user may set new groups.
+.Sh RETURN VALUES
+A 0 value is returned on success, -1 on error, with
+an error code stored in
+.Va errno .
+.Sh ERRORS
+The
+.Fn setgroups
+call will fail if:
+.Bl -tag -width Er
+.It Bq Er EPERM
+The caller is not the super-user.
+.It Bq Er EFAULT
+The address specified for
+.Fa gidset
+is outside the process
+address space.
+.El
+.Sh SEE ALSO
+.Xr getgroups 2 ,
+.Xr initgroups 3
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/setpgid.2 b/lib/libc/sys/setpgid.2
new file mode 100644
index 0000000..141c203
--- /dev/null
+++ b/lib/libc/sys/setpgid.2
@@ -0,0 +1,89 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)setpgid.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SETPGID 2
+.Os BSD 4
+.Sh NAME
+.Nm setpgid ,
+.Nm setpgrp
+.Nd set process group
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn setpgid pid_tpid pid_tpgrp
+.Ft int
+.Fn setpgrp pid_tpid pid_tpgrp
+.Sh DESCRIPTION
+.Fn Setpgid
+sets the process group of the specified process
+.Ar pid
+to the specified
+.Ar pgrp .
+If
+.Ar pid
+is zero, then the call applies to the current process.
+.Pp
+If the invoker is not the super-user, then the affected process
+must have the same effective user-id as the invoker or be a descendant
+of the invoking process.
+.Sh RETURN VALUES
+.Fn Setpgid
+returns 0 when the operation was successful.
+If the request failed, -1 is returned and the global variable
+.Va errno
+indicates the reason.
+.Sh ERRORS
+.Fn Setpgid
+will fail and the process group will not be altered if:
+.Bl -tag -width indent
+.It Bq Er ESRCH
+The requested process does not exist.
+.It Bq Er EPERM
+The effective user ID of the requested process is different
+from that of the caller and the process is not a descendent
+of the calling process.
+.El
+.Sh SEE ALSO
+.Xr getpgrp 2
+.Sh STANDARDS
+.Fn Setpgid
+conforms to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
+.Sh COMPATIBILITY
+.Fn Setpgrp
+is identical to
+.Fn setpgid ,
+and is retained for calling convention compatibility with historical
+versions of
+.Bx .
diff --git a/lib/libc/sys/setregid.2 b/lib/libc/sys/setregid.2
new file mode 100644
index 0000000..e890a98
--- /dev/null
+++ b/lib/libc/sys/setregid.2
@@ -0,0 +1,91 @@
+.\" Copyright (c) 1980, 1991, 1993, 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)setregid.2	8.2 (Berkeley) 4/16/94
+.\"
+.Dd April 16, 1994
+.Dt SETREGID 2
+.Os BSD 4.2
+.Sh NAME
+.Nm setregid
+.Nd set real and effective group ID
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn setregid "gid_t rgid" "gid_t egid"
+.Sh DESCRIPTION
+The real and effective group ID's of the current process
+are set to the arguments.
+Unprivileged users may change the real group
+ID to the effective group ID and vice-versa; only the super-user may
+make other changes.
+.Pp
+Supplying a value of -1 for either the real or effective
+group ID forces the system to substitute the current
+ID in place of the -1 parameter.
+.Pp
+The
+.Fn setregid
+function was intended to allow swapping
+the real and effective group IDs
+in set-group-ID programs to temporarily relinquish the set-group-ID value.
+This function did not work correctly,
+and its purpose is now better served by the use of the
+.Fn setegid
+function (see
+.Xr setuid 2 ) .
+.Pp
+When setting the real and effective group IDs to the same value,
+the standard
+.Fn setgid
+function is preferred.
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.  Otherwise,
+a value of -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Bl -tag -width [EPERM]
+.It Bq Er EPERM
+The current process is not the super-user and a change
+other than changing the effective group-id to the real group-id
+was specified.
+.El
+.Sh SEE ALSO
+.Xr getgid 2 ,
+.Xr setegid 2 ,
+.Xr setgid 2 ,
+.Xr setuid 2
+.Sh HISTORY
+The
+.Nm
+system call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/setreuid.2 b/lib/libc/sys/setreuid.2
new file mode 100644
index 0000000..12af3ca
--- /dev/null
+++ b/lib/libc/sys/setreuid.2
@@ -0,0 +1,89 @@
+.\" Copyright (c) 1980, 1991, 1993, 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)setreuid.2	8.2 (Berkeley) 4/16/94
+.\"
+.Dd April 16, 1994
+.Dt SETREUID 2
+.Os BSD 4
+.Sh NAME
+.Nm setreuid
+.Nd set real and effective user ID's
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn setreuid "uid_t ruid" "uid_t euid"
+.Sh DESCRIPTION
+The real and effective user IDs of the
+current process are set according to the arguments.
+If
+.Fa ruid
+or 
+.Fa euid
+is -1, the current uid is filled in by the system.
+Unprivileged users may change the real user
+ID to the effective user ID and vice-versa; only the super-user may
+make other changes.
+.Pp
+The
+.Fn setreuid
+function has been used to swap the real and effective user IDs
+in set-user-ID programs to temporarily relinquish the set-user-ID value.
+This purpose is now better served by the use of the
+.Fn seteuid
+function (see
+.Xr setuid 2 ) .
+.Pp
+When setting the real and effective user IDs to the same value,
+the standard
+.Fn setuid
+function is preferred.
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.  Otherwise,
+a value of -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Bl -tag -width [EPERM]
+.It Bq Er EPERM
+The current process is not the super-user and a change
+other than changing the effective user-id to the real user-id
+was specified.
+.El
+.Sh SEE ALSO
+.Xr getuid 2 ,
+.Xr seteuid 2 ,
+.Xr setuid 2
+.Sh HISTORY
+The
+.Nm
+system call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/setsid.2 b/lib/libc/sys/setsid.2
new file mode 100644
index 0000000..48ac6a0
--- /dev/null
+++ b/lib/libc/sys/setsid.2
@@ -0,0 +1,79 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)setsid.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd "June 4, 1993"
+.Dt SETSID 2
+.Os
+.Sh NAME
+.Nm setsid
+.Nd create session and set process group ID
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Ft pid_t
+.Fn setsid "void"
+.Sh DESCRIPTION
+The
+.Nm setsid
+function creates a new session.
+The calling process is the session leader of the new session, is the
+process group leader of a new process group and has no controlling
+terminal.
+The calling process is the only process in either the session or the
+process group.
+.Pp
+Upon successful completion, the
+.Nm setsid
+function returns the value of the process group ID of the new process
+group, which is the same as the process ID of the calling process.
+.Sh ERRORS
+If an error occurs,
+.Nm setsid
+returns -1 and the global variable
+.Va errno
+is set to indicate the error, as follows:
+.Bl -tag -width Er
+.It Bq Er EPERM
+The calling process is already a process group leader, or the process
+group ID of a process other than the calling process matches the process
+ID of the calling process.
+.El
+.Sh SEE ALSO
+.Xr setpgid 3 ,
+.Xr tcgetpgrp 3 ,
+.Xr tcsetpgrp 3
+.Sh STANDARDS
+The
+.Nm setsid
+function is expected to be compliant with the
+.St -p1003.1-88
+specification.
diff --git a/lib/libc/sys/setuid.2 b/lib/libc/sys/setuid.2
new file mode 100644
index 0000000..383a8f5
--- /dev/null
+++ b/lib/libc/sys/setuid.2
@@ -0,0 +1,122 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)setuid.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SETUID 2
+.Os BSD 4.2
+.Sh NAME
+.Nm setuid ,
+.Nm seteuid ,
+.Nm setgid ,
+.Nm setegid ,
+.Nd set user and group ID
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <unistd.h>
+.Ft int
+.Fn setuid "uid_t uid"
+.Ft int
+.Fn seteuid "uid_t euid"
+.Ft int
+.Fn setgid "gid_t gid"
+.Ft int
+.Fn setegid "gid_t egid"
+.Sh DESCRIPTION
+The
+.Fn setuid
+function
+sets the real and effective
+user IDs and the saved set-user-ID of the current process
+to the specified value.
+The
+.Fn setuid
+function is permitted if the specified ID is equal to the real user ID
+of the process, or if the effective user ID is that of the super user.
+.Pp
+The
+.Fn setgid
+function
+sets the real and effective
+group IDs and the saved set-group-ID of the current process
+to the specified value.
+The
+.Fn setgid
+function is permitted if the specified ID is equal to the real group ID
+of the process, or if the effective user ID is that of the super user.
+.Pp
+The
+.Fn seteuid
+function
+.Pq Fn setegid
+sets the effective user ID (group ID) of the
+current process.
+The effective user ID may be set to the value
+of the real user ID or the saved set-user-ID (see
+.Xr intro 2
+and
+.Xr execve 2 ) ;
+in this way, the effective user ID of a set-user-ID executable
+may be toggled by switching to the real user ID, then re-enabled
+by reverting to the set-user-ID value.
+Similarly, the effective group ID may be set to the value
+of the real group ID or the saved set-user-ID.
+.Pp
+.Sh RETURN VALUES
+Upon success, these functions return 0;
+otherwise \-1 is returned.
+.Pp
+If the user is not the super user, or the uid
+specified is not the real, effective ID, or saved ID,
+these functions return \-1.
+.Sh SEE ALSO
+.Xr getuid 2 ,
+.Xr getgid 2
+.Sh STANDARDS
+The
+.Fn setuid
+and
+.Fn setgid
+functions are compliant with the
+.St -p1003.1-88
+specification with
+.Li _POSIX_SAVED_IDS
+not defined.
+The
+.Fn seteuid
+and
+.Fn setegid
+functions are extensions based on the 
+.Tn POSIX
+concept of
+.Li _POSIX_SAVED_IDS ,
+and have been proposed for a future revision of the standard.
diff --git a/lib/libc/sys/shmat.2 b/lib/libc/sys/shmat.2
new file mode 100644
index 0000000..587eebc
--- /dev/null
+++ b/lib/libc/sys/shmat.2
@@ -0,0 +1,110 @@
+.\"
+.\" Copyright (c) 1995 David Hovemeyer <daveho@infocom.com>
+.\"
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.\" $Id$
+.\"
+.Dd August 2, 1995
+.Dt SHMAT 2
+.Os FreeBSD
+.Sh NAME
+.Nm shmat ,
+.Nm shmdt
+.Nd attach or detach shared memory
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/ipc.h>
+.Fd #include <sys/shm.h>
+.Ft void *
+.Fn "shmat" "int shmid" "void *addr" "int flag"
+.Ft int
+.Fn "shmdt" "void *addr"
+.Sh DESCRIPTION
+.Fn Shmat
+attaches the shared memory segment identifed by
+.Fa shmid
+to the calling process's address space.  The address where the segment
+is attached is determined as follows:
+.\"
+.\" These are cribbed almost exactly from Stevens, _Advanced Programming in
+.\" the UNIX Environment_.
+.\"
+.Bl -bullet
+.It
+If
+.Fa addr
+is 0, the segment is attached at an address selected by the
+kernel.
+.It
+If 
+.Fa addr
+is nonzero and SHM_RND is not specifed in
+.Fa flag ,
+the segment is attached the specified address.
+.It
+If
+.Fa addr
+is specified and SHM_RND is specified,
+.Fa addr
+is rounded down to the nearest multiple of SHMLBA.
+.El
+.Pp
+.Fn Shmdt
+detaches the shared memory segment at the address specified by
+.Fa addr
+from the calling process's address space.
+.Sh RETURN VALUES
+Upon success,
+.Fn shmat
+returns the address where the segment is attached; otherwise, -1
+is returned and
+.Va errno
+is set to indicate the error.
+.Pp
+Upon success,
+.Fn shmdt
+returns 0; otherwise, -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Shmat
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+No shared memory segment was found corresponding to
+.Fa shmid .
+.It Bq Er EINVAL
+.Fa addr
+was not an acceptable address.
+.El
+.Pp
+.Fn Shmdt
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+.Fa addr
+does not point to a shared memory segment.
+.Sh "SEE ALSO"
+.Xr shmget 2 ,
+.Xr shmctl 2
diff --git a/lib/libc/sys/shmctl.2 b/lib/libc/sys/shmctl.2
new file mode 100644
index 0000000..b1c5a4b
--- /dev/null
+++ b/lib/libc/sys/shmctl.2
@@ -0,0 +1,136 @@
+.\"
+.\" Copyright (c) 1995 David Hovemeyer <daveho@infocom.com>
+.\"
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.\" $Id$
+.\"
+.Dd July 17, 1995
+.Dt SHMCTL 2
+.Os FreeBSD
+.Sh NAME
+.Nm shmctl
+.Nd shared memory control
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/ipc.h>
+.Fd #include <sys/shm.h>
+.Ft int
+.Fn "shmctl" "int shmid" "int cmd" "struct shmid_ds *buf"
+.Sh DESCRIPTION
+Performs the action specified by
+.Fa cmd
+on the shared memory segment identified by
+.Fa shmid :
+.Bl -tag -width SHM_UNLOCKX
+.It Dv IPC_STAT
+Fetch the segment's
+.Fa "struct shmid_ds" ,
+storing it in the memory pointed to by
+.Fa buf .
+.\"
+.\" XXX need to make sure that this is correct for FreeBSD
+.\"
+.It Dv IPC_SET
+Changes the
+.Fa shm_perm.uid ,
+.Fa shm_perm.gid ,
+and
+.Fa shm_perm.mode
+members of the segment's
+.Fa "struct shmid_ds"
+to match those of the struct pointed to by
+.Fa buf .
+The calling process's effective uid must
+match either
+.Fa shm_perm.uid
+or
+.Fa shm_perm.cuid ,
+or it must have superuser privileges.
+.It Dv IPC_RMID
+Removes the segment from the system.  The removal will not take
+effect until all processes having attached the segment have exited;
+however, once the IPC_RMID operation has taken place, no further
+processes will be allowed to attach the segment.  For the operation
+to succeed, the calling process's effective uid must match
+.Fa shm_perm.uid
+or
+.Fa shm_perm.cuid ,
+or the process must have superuser privilges.
+.\" .It Dv SHM_LOCK
+.\" Locks the segment in memory.  The calling process must have
+.\" superuser privileges. Not implemented in FreeBSD.
+.\" .It Dv SHM_UNLOCK
+.\" Unlocks the segment from memory.  The calling process must
+.\" have superuser priviliges.  Not implemented in FreeBSD.
+.El
+.Pp
+The
+.Fa "shmid_ds" 
+struct is defined as follows:
+.\"
+.\" I fiddled with the spaces a bit to make it fit well when viewed
+.\" with nroff, but otherwise it's straight from sys/shm.h
+.\"
+.Bd -literal
+struct shmid_ds {
+    struct ipc_perm shm_perm;   /* operation permission structure */
+    int             shm_segsz;  /* size of segment in bytes */
+    pid_t           shm_lpid;   /* process ID of last shared memory op */
+    pid_t           shm_cpid;   /* process ID of creator */
+    short           shm_nattch; /* number of current attaches */
+    time_t          shm_atime;  /* time of last shmat() */
+    time_t          shm_dtime;  /* time of last shmdt() */
+    time_t          shm_ctime;  /* time of last change by shmctl() */
+    void           *shm_internal; /* sysv stupidity */
+};
+.Ed
+.Sh RETURN VALUES
+Upon successful completion,
+.Fn shmctl
+returns 0.  Otherwise, it returns -1 and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Shmctl
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+Invalid operation, or
+no shared memory segment was found corresponding to
+.Fa shmid .
+.\"
+.\" XXX I think the following is right: ipcperm() only returns EPERM
+.\"	when an attempt is made to modify (IPC_M) by a non-creator
+.\"	non-owner
+.It Bq Er EPERM
+The calling process's effective uid does not match the uid of
+the shared memory segment's owner or creator.
+.It Bq Er EACCES
+Permission denied due to mismatch between operation and mode of
+shared memory segment.
+.Sh "SEE ALSO"
+.Xr shmget 2 ,
+.Xr shmat 2 ,
+.Xr shmdt 2 ,
+.Xr ftok 3
diff --git a/lib/libc/sys/shmget.2 b/lib/libc/sys/shmget.2
new file mode 100644
index 0000000..3df3272
--- /dev/null
+++ b/lib/libc/sys/shmget.2
@@ -0,0 +1,138 @@
+.\"
+.\" Copyright (c) 1995 David Hovemeyer <daveho@infocom.com>
+.\"
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
+.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.\" $Id$
+.\"
+.Dd July 3, 1995
+.Dt SHMGET 2
+.Os FreeBSD
+.Sh NAME
+.Nm shmget
+.Nd obtain a shared memory identifier
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/ipc.h>
+.Fd #include <sys/shm.h>
+.Ft int
+.Fn "shmget" "key_t key" "int size" "int flag"
+.Sh DESCRIPTION
+Based on the values of
+.Fa key
+and
+.Fa flag ,
+.Fn shmget
+returns the identifier of a newly created or previously existing shared
+memory segment.
+.\"
+.\" The following bit about keys and modes also applies to semaphores
+.\" and message queues.
+.\"
+The key
+is analogous to a filename: it provides a handle that names an
+IPC object.  There are three ways to specify a key:
+.Bl -bullet
+.It
+IPC_PRIVATE may be specified, in which case a new IPC object
+will be created.
+.It
+An integer constant may be specified.  If no IPC object corresponding
+to
+.Fa key
+is specified and the IPC_CREAT bit is set in
+.Fa flag ,
+a new one will be created.
+.It
+.Fn ftok
+may be used to generate a key from a pathname.  See
+.Xr ftok 3 .
+.El
+.Pp
+The mode of a newly created IPC object is determined by
+.Em OR Ns 'ing
+the following constants into the
+.Fa flag
+parameter:
+.Bl -tag -width XSHM_WXX6XXX
+.It Dv SHM_R
+Read access for user.
+.It Dv SHM_W
+Write access for user.
+.It Dv (SHM_R>>3)
+Read access for group.
+.It Dv (SHM_W>>3)
+Write access for group.
+.It Dv (SHM_R>>6)
+Read access for other.
+.It Dv (SHM_W>>6)
+Write access for other.
+.El
+.\"
+.\" XXX - we should also mention how uid, euid, and gid affect ownership
+.\"	  and use
+.\"
+.\" end section about keys and modes
+.\"
+.Pp
+When creating a new shared memory segment,
+.Fa size
+indicates the desired size of the new segment in bytes.  The size
+of the segment may be rounded up to a multiple convenient to the
+kernel (i.e., the page size).
+.Sh RETURN VALUES
+Upon successful completion,
+.Fn shmget
+returns the positive integer identifier of a shared memory segment.
+Otherwise, -1 is returned and
+.Va errno
+set to indicate the error.
+.Sh ERRORS
+.Fn Shmget
+will fail if:
+.Bl -tag -width Er
+.\"
+.\" XXX What about ipcperm failing?
+.\"
+.It Bq Er EINVAL
+Size specified is greater than the size of the previously existing segment.
+Size specified is less than the system imposed minumum, or greater than
+the system imposed maximum.
+.It Bq Er ENOENT
+No shared memory segment was found matching
+.Fa key ,
+and IPC_CREAT was not specified.
+.It Bq Er ENOSPC
+The kernel was unable to allocate enough memory to
+satisfy the request.
+.It Bq Er EEXIST
+IPC_CREAT and IPC_EXCL were specified, and a shared memory segment
+corresponding to
+.Fa key
+already exists.
+.Pp
+.Sh "SEE ALSO" 
+.Xr shmctl 2 ,
+.Xr shmat 2 ,
+.Xr shmdt 2 ,
+.Xr ftok 3
diff --git a/lib/libc/sys/shutdown.2 b/lib/libc/sys/shutdown.2
new file mode 100644
index 0000000..976f958
--- /dev/null
+++ b/lib/libc/sys/shutdown.2
@@ -0,0 +1,81 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)shutdown.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SHUTDOWN 2
+.Os BSD 4.2
+.Sh NAME
+.Nm shutdown
+.Nd shut down part of a full-duplex connection
+.Sh SYNOPSIS
+.Fd #include <sys/socket.h>
+.Ft int
+.Fn shutdown "int s" "int how"
+.Sh DESCRIPTION
+The
+.Fn shutdown
+call causes all or part of a full-duplex connection on
+the socket associated with
+.Fa s
+to be shut down.
+If
+.Fa how
+is 0, further receives will be disallowed.
+If
+.Fa how
+is 1, further sends will be disallowed.
+If
+.Fa how
+is 2, further sends and receives will be disallowed.
+.Sh DIAGNOSTICS
+A 0 is returned if the call succeeds, -1 if it fails.
+.Sh ERRORS
+The call succeeds unless:
+.Bl -tag -width ENOTCONNAA
+.It Bq Er EBADF
+.Fa S
+is not a valid descriptor.
+.It Bq Er ENOTSOCK
+.Fa S
+is a file, not a socket.
+.It Bq Er ENOTCONN
+The specified socket is not connected.
+.El
+.Sh SEE ALSO
+.Xr connect 2 ,
+.Xr socket 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/sigaction.2 b/lib/libc/sys/sigaction.2
new file mode 100644
index 0000000..3f41266
--- /dev/null
+++ b/lib/libc/sys/sigaction.2
@@ -0,0 +1,370 @@
+.\" Copyright (c) 1980, 1990, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)sigaction.2	8.2 (Berkeley) 4/3/94
+.\"
+.Dd April 3, 1994
+.Dt SIGACTION 2
+.Os
+.Sh NAME
+.Nm sigaction
+.Nd software signal facilities
+.Sh SYNOPSIS
+.Fd #include <signal.h>
+.Bd -literal
+struct sigaction {
+	void     (*sa_handler)();
+	sigset_t sa_mask;
+	int	 sa_flags;
+};
+.Ed
+.Fn sigaction "int sig" "const struct sigaction *act" "struct sigaction *oact"
+.Sh DESCRIPTION
+The system defines a set of signals that may be delivered to a process.
+Signal delivery resembles the occurrence of a hardware interrupt:
+the signal is blocked from further occurrence, the current process 
+context is saved, and a new one is built.  A process may specify a
+.Em handler
+to which a signal is delivered, or specify that a signal is to be 
+.Em ignored .
+A process may also specify that a default action is to be taken
+by the system when a signal occurs.
+A signal may also be
+.Em blocked ,
+in which case its delivery is postponed until it is
+.Em unblocked .
+The action to be taken on delivery is determined at the time
+of delivery.
+Normally, signal handlers execute on the current stack
+of the process.  This may be changed, on a per-handler basis,
+so that signals are taken on a special
+.Em "signal stack" .
+.Pp
+Signal routines execute with the signal that caused their
+invocation
+.Em blocked ,
+but other signals may yet occur.
+A global 
+.Em "signal mask"
+defines the set of signals currently blocked from delivery
+to a process.  The signal mask for a process is initialized
+from that of its parent (normally empty).  It
+may be changed with a
+.Xr sigprocmask 2
+call, or when a signal is delivered to the process.
+.Pp
+When a signal
+condition arises for a process, the signal is added to a set of
+signals pending for the process.
+If the signal is not currently
+.Em blocked
+by the process then it is delivered to the process.
+Signals may be delivered any time a process enters the operating system
+(e.g., during a system call, page fault or trap, or clock interrupt).
+If multiple signals are ready to be delivered at the same time,
+any signals that could be caused by traps are delivered first.
+Additional signals may be processed at the same time, with each
+appearing to interrupt the handlers for the previous signals
+before their first instructions.
+The set of pending signals is returned by the
+.Xr sigpending 2
+function.
+When a caught signal
+is delivered, the current state of the process is saved,
+a new signal mask is calculated (as described below), 
+and the signal handler is invoked.  The call to the handler
+is arranged so that if the signal handling routine returns
+normally the process will resume execution in the context
+from before the signal's delivery.
+If the process wishes to resume in a different context, then it
+must arrange to restore the previous context itself.
+.Pp
+When a signal is delivered to a process a new signal mask is
+installed for the duration of the process' signal handler
+(or until a
+.Xr sigprocmask
+call is made).
+This mask is formed by taking the union of the current signal mask set,
+the signal to be delivered, and 
+the signal mask associated with the handler to be invoked.
+.Pp
+.Fn Sigaction
+assigns an action for a specific signal.
+If
+.Fa act
+is non-zero, it
+specifies an action
+.Pf ( Dv SIG_DFL ,
+.Dv SIG_IGN ,
+or a handler routine) and mask
+to be used when delivering the specified signal.
+If 
+.Fa oact
+is non-zero, the previous handling information for the signal
+is returned to the user.
+.Pp
+Once a signal handler is installed, it remains installed
+until another
+.Fn sigaction
+call is made, or an 
+.Xr execve 2
+is performed.
+A signal-specific default action may be reset by
+setting
+.Fa sa_handler
+to
+.Dv SIG_DFL .
+The defaults are process termination, possibly with core dump;
+no action; stopping the process; or continuing the process.
+See the signal list below for each signal's default action.
+If
+.Fa sa_handler
+is
+.Dv SIG_DFL ,
+the default action for the signal is to discard the signal,
+and if a signal is pending,
+the pending signal is discarded even if the signal is masked.
+If
+.Fa sa_handler
+is set to
+.Dv SIG_IGN
+current and pending instances
+of the signal are ignored and discarded.
+.Pp
+Options may be specified by setting
+.Em sa_flags .
+If the
+.Dv SA_NOCLDSTOP
+bit is set when installing a catching function
+for the
+.Dv SIGCHLD
+signal,
+the
+.Dv SIGCHLD
+signal will be generated only when a child process exits,
+not when a child process stops.
+Further, if the
+.Dv SA_ONSTACK
+bit is set in
+.Em sa_flags ,
+the system will deliver the signal to the process on a
+.Em "signal stack" ,
+specified with
+.Xr sigstack 2 .
+.Pp
+If a signal is caught during the system calls listed below,
+the call may be forced to terminate
+with the error
+.Dv EINTR ,
+the call may return with a data transfer shorter than requested,
+or the call may be restarted.
+Restart of pending calls is requested
+by setting the
+.Dv SA_RESTART
+bit in
+.Ar sa_flags .
+The affected system calls include
+.Xr open 2 ,
+.Xr read 2 ,
+.Xr write 2 ,
+.Xr sendto 2 ,
+.Xr recvfrom 2 ,
+.Xr sendmsg 2
+and
+.Xr recvmsg 2
+on a communications channel or a slow device (such as a terminal,
+but not a regular file)
+and during a
+.Xr wait 2
+or
+.Xr ioctl 2 .
+However, calls that have already committed are not restarted,
+but instead return a partial success (for example, a short read count).
+.Pp
+After a
+.Xr fork 2
+or
+.Xr vfork 2
+all signals, the signal mask, the signal stack,
+and the restart/interrupt flags are inherited by the child.
+.Pp
+.Xr Execve 2
+reinstates the default
+action for all signals which were caught and
+resets all signals to be caught on the user stack.
+Ignored signals remain ignored;
+the signal mask remains the same;
+signals that restart pending system calls continue to do so.
+.Pp
+The following is a list of all signals
+with names as in the include file
+.Aq Pa signal.h :
+.Bl -column SIGVTALARMXX "create core imagexxx"
+.It Sy "  NAME  " "	Default Action  " "	Description"
+.It Dv SIGHUP No "	terminate process" "	terminal line hangup"
+.It Dv SIGINT No "	terminate process" "	interrupt program"
+.It Dv SIGQUIT No "	create core image" "	quit program"
+.It Dv SIGILL No "	create core image" "	illegal instruction"
+.It Dv SIGTRAP No "	create core image" "	trace trap"
+.It Dv SIGABRT No "	create core image" Xr 	abort 2
+call (formerly
+.Dv SIGIOT )
+.It Dv SIGEMT No "	create core image" "	emulate instruction executed"
+.It Dv SIGFPE No "	create core image" "	floating-point exception"
+.It Dv SIGKILL No "	terminate process" "	kill program"
+.It Dv SIGBUS No "	create core image" "	bus error"
+.It Dv SIGSEGV No "	create core image" "	segmentation violation"
+.It Dv SIGSYS No "	create core image" "	system call given invalid argument"
+.It Dv SIGPIPE No "	terminate process" "	write on a pipe with no reader"
+.It Dv SIGALRM No "	terminate process" "	real-time timer expired"
+.It Dv SIGTERM No "	terminate process" "	software termination signal"
+.It Dv SIGURG No "	discard signal" "	urgent condition present on socket"
+.It Dv SIGSTOP No "	stop process" "	stop (cannot be caught or ignored)"
+.It Dv SIGTSTP No "	stop process" "	stop signal generated from keyboard"
+.It Dv SIGCONT No "	discard signal" "	continue after stop"
+.It Dv SIGCHLD No "	discard signal" "	child status has changed"
+.It Dv SIGTTIN No "	stop process" "	background read attempted from control terminal"
+.It Dv SIGTTOU No "	stop process" "	background write attempted to control terminal"
+.It Dv SIGIO No "	discard signal" Tn "	I/O"
+is possible on a descriptor (see
+.Xr fcntl 2 )
+.It Dv SIGXCPU No "	terminate process" "	cpu time limit exceeded (see"
+.Xr setrlimit 2 )
+.It Dv SIGXFSZ No "	terminate process" "	file size limit exceeded (see"
+.Xr setrlimit 2 )
+.It Dv SIGVTALRM No "	terminate process" "	virtual time alarm (see"
+.Xr setitimer 2 )
+.It Dv SIGPROF No "	terminate process" "	profiling timer alarm (see"
+.Xr setitimer 2 )
+.It Dv SIGWINCH No "	discard signal" "	Window size change"
+.It Dv SIGINFO No "	discard signal" "	status request from keyboard"
+.It Dv SIGUSR1 No "	terminate process" "	User defined signal 1"
+.It Dv SIGUSR2 No "	terminate process" "	User defined signal 2"
+.El
+.Sh NOTE
+The mask specified in 
+.Fa act
+is not allowed to block
+.Dv SIGKILL
+or
+.Dv SIGSTOP .
+This is done silently by the system.
+.Sh RETURN VALUES
+A 0 value indicated that the call succeeded.  A \-1 return value
+indicates an error occurred and
+.Va errno
+is set to indicated the reason.
+.Sh EXAMPLE
+The handler routine can be declared:
+.Bd -literal -offset indent
+void handler(sig, code, scp)
+int sig, code;
+struct sigcontext *scp;
+.Ed
+.Pp
+Here
+.Fa sig
+is the signal number, into which the hardware faults and traps are
+mapped.
+.Fa Code
+is a parameter that is either a constant
+or the code provided by
+the hardware.
+.Fa Scp
+is a pointer to the
+.Fa sigcontext
+structure (defined in
+.Aq Pa signal.h ) ,
+used to restore the context from before the signal.
+.Sh ERRORS
+.Fn Sigaction
+will fail and no new signal handler will be installed if one
+of the following occurs:
+.Bl -tag -width Er
+.It Bq Er EFAULT
+Either
+.Fa act
+or 
+.Fa oact
+points to memory that is not a valid part of the process
+address space.
+.It Bq Er EINVAL
+.Fa Sig
+is not a valid signal number.
+.It Bq Er EINVAL
+An attempt is made to ignore or supply a handler for
+.Dv SIGKILL
+or
+.Dv SIGSTOP .
+.El
+.Sh STANDARDS
+The
+.Nm sigaction
+function is defined by
+.St -p1003.1-88 .
+The
+.Dv SA_ONSTACK
+and
+.Dv SA_RESTART
+flags are Berkeley extensions,
+as are the signals,
+.Dv SIGTRAP ,
+.Dv SIGEMT ,
+.Dv SIGBUS ,
+.Dv SIGSYS ,
+.Dv SIGURG ,
+.Dv SIGIO ,
+.Dv SIGXCPU ,
+.Dv SIGXFSZ ,
+.Dv SIGVTALRM ,
+.Dv SIGPROF ,
+.Dv SIGWINCH ,
+and
+.Dv SIGINFO .
+Those signals are available on most
+.Tn BSD Ns \-derived
+systems.
+.Sh SEE ALSO
+.Xr kill 1 ,
+.Xr ptrace 2 ,
+.Xr kill 2 ,
+.Xr sigaction 2 ,
+.Xr sigprocmask 2 ,
+.Xr sigsuspend 2 ,
+.Xr sigblock 2 ,
+.Xr sigsetmask 2 ,
+.Xr sigpause 2 ,
+.Xr sigstack 2 ,
+.Xr sigvec 2 ,
+.Xr setjmp 3 ,
+.Xr siginterrupt 3 ,
+.Xr sigsetops 3 ,
+.Xr tty 4
diff --git a/lib/libc/sys/sigaltstack.2 b/lib/libc/sys/sigaltstack.2
new file mode 100644
index 0000000..f1ed718
--- /dev/null
+++ b/lib/libc/sys/sigaltstack.2
@@ -0,0 +1,165 @@
+.\" Copyright (c) 1983, 1991, 1992, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)sigaltstack.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SIGALTSTACK 2
+.Os BSD 4.2
+.Sh NAME
+.Nm sigaltstack
+.Nd set and/or get signal stack context
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <signal.h>
+.Bd -literal
+struct sigaltstack {
+	caddr_t ss_sp;
+	long	ss_size;
+	int     ss_flags;
+};
+.Ed
+.Ft int
+.Fn sigaltstack "const struct sigaltstack *ss" "struct sigaltstack *oss"
+.Sh DESCRIPTION
+.Fn Sigaltstack
+allows users to define an alternate stack on which signals
+are to be processed.
+If
+.Fa ss
+is non-zero,
+it specifies a pointer to and the size of a
+.Em "signal stack"
+on which to deliver signals,
+and tells the system if the process is currently executing
+on that stack.
+When a signal's action indicates its handler
+should execute on the signal stack (specified with a
+.Xr sigaction 2
+call), the system checks to see
+if the process is currently executing on that stack.
+If the process is not currently executing on the signal stack,
+the system arranges a switch to the signal stack for the
+duration of the signal handler's execution. 
+.Pp
+If
+.Dv SA_DISABLE
+is set in
+.Fa ss_flags ,
+.Fa ss_sp
+and
+.Fa ss_size
+are ignored and the signal stack will be disabled.
+Trying to disable an active stack will cause
+.Nm
+to return -1 with
+.Va errno
+set to
+.Dv EINVAL .
+A disabled stack will cause all signals to be
+taken on the regular user stack.
+If the stack is later re-enabled then all signals that were specified
+to be processed on an alternate stack will resume doing so.
+.Pp
+If
+.Fa oss
+is non-zero, the current signal stack state is returned.
+The
+.Fa ss_flags
+field will contain the value
+.Dv SA_ONSTACK
+if the process is currently on a signal stack and
+.Dv SA_DISABLE
+if the signal stack is currently disabled.
+.Sh NOTES
+The value
+.Dv SIGSTKSZ
+is defined to be the number of bytes/chars that would be used to cover
+the usual case when allocating an alternate stack area.
+The following code fragment is typically used to allocate an alternate stack.
+.Bd -literal -offset indent
+if ((sigstk.ss_sp = malloc(SIGSTKSZ)) == NULL)
+	/* error return */
+sigstk.ss_size = SIGSTKSZ;
+sigstk.ss_flags = 0;
+if (sigaltstack(&sigstk,0) < 0)
+	perror("sigaltstack");
+.Ed
+An alternative approach is provided for programs with signal handlers
+that require a specific amount of stack space other than the default size.
+The value
+.Dv MINSIGSTKSZ
+is defined to be the number of bytes/chars that is required by
+the operating system to implement the alternate stack feature.
+In computing an alternate stack size,
+programs should add
+.Dv MINSIGSTKSZ
+to their stack requirements to allow for the operating system overhead.
+.Pp
+Signal stacks are automatically adjusted for the direction of stack
+growth and alignment requirements.
+Signal stacks may or may not be protected by the hardware and
+are not ``grown'' automatically as is done for the normal stack.
+If the stack overflows and this space is not protected
+unpredictable results may occur.
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.
+Otherwise, a value of -1 is returned and 
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Sigstack
+will fail and the signal stack context will remain unchanged
+if one of the following occurs.
+.Bl -tag -width [ENOMEM]
+.It Bq Er EFAULT
+Either
+.Fa ss
+or
+.Fa oss
+points to memory that is not a valid part of the process
+address space.
+.It Bq Er EINVAL
+An attempt was made to disable an active stack.
+.It Bq Er ENOMEM
+Size of alternate stack area is less than or equal to
+.Dv MINSIGSTKSZ .
+.El
+.Sh SEE ALSO
+.Xr sigaction 2 ,
+.Xr setjmp 3
+.Sh HISTORY
+The predecessor to
+.Nm sigaltstack ,
+the
+.Fn sigstack
+system call, appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/sigpending.2 b/lib/libc/sys/sigpending.2
new file mode 100644
index 0000000..0c87d4f
--- /dev/null
+++ b/lib/libc/sys/sigpending.2
@@ -0,0 +1,72 @@
+.\" Copyright (c) 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Berkeley Software Design, Inc.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)sigpending.2	8.3 (Berkeley) 1/12/94
+.\"
+.Dd January 12, 1994
+.Dt SIGPENDING 2
+.Os
+.Sh NAME
+.Nm sigpending
+.Nd get pending signals
+.Sh SYNOPSIS
+.Fd #include <signal.h>
+.Ft int
+.Fn sigpending "sigset_t *set"
+.Sh DESCRIPTION
+The
+.Nm sigpending
+function returns a mask of the signals pending for delivery
+to the calling process in the location indicated by
+.Fa set .
+Signals may be pending because they are currently masked,
+or transiently before delivery (although the latter case is not
+normally detectable).
+.Sh RETURN VALUES
+A 0 value indicated that the call succeeded.  A \-1 return value
+indicates an error occurred and
+.Va errno
+is set to indicated the reason.
+.Sh ERRORS
+The
+.Nm sigpending
+function does not currently detect any errors.
+.Sh SEE ALSO
+.Xr sigaction 2 ,
+.Xr sigprocmask 2
+.Sh STANDARDS
+The
+.Nm sigpending
+function is defined by
+.St -p1003.1-88 .
diff --git a/lib/libc/sys/sigprocmask.2 b/lib/libc/sys/sigprocmask.2
new file mode 100644
index 0000000..73b014d
--- /dev/null
+++ b/lib/libc/sys/sigprocmask.2
@@ -0,0 +1,120 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)sigprocmask.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SIGPROCMASK 2
+.Os
+.Sh NAME
+.Nm sigprocmask
+.Nd manipulate current signal mask
+.Sh SYNOPSIS
+.Fd #include <signal.h>
+.Ft int
+.Fn sigprocmask "int how" "const sigset_t *set" "sigset_t *oset"
+.Fn sigmask signum
+.Sh DESCRIPTION
+The
+.Fn sigprocmask
+function examines and/or changes the current signal mask (those signals
+that are blocked from delivery).
+Signals are blocked if they are members of the current signal mask set.
+.Pp
+If
+.Fa set
+is not null, the action of
+.Fn sigprocmask
+depends on the value of the parameter
+.Fa how .
+The signal mask is changed as a function of the specified
+.Fa set
+and the current mask.
+The function is specified by
+.Fa how
+using one of the following values from
+.Aq Pa signal.h :
+.Bl -tag -width SIG_UNBLOCK
+.It Dv SIG_BLOCK
+The new mask is the union of the current mask and the specified
+.Fa set .
+.It Dv SIG_UNBLOCK
+The new mask is the intersection of the current mask
+and the complement of the specified
+.Fa set .
+.It Dv SIG_SETMASK
+The current mask is replaced by the specified
+.Fa set .
+.El
+.Pp
+If
+.Fa oset
+is not null, it is set to
+the previous value of the signal mask.
+When
+.Fa set
+is null,
+the value of
+.Ar how
+is insignificant and the mask remains unset
+providing a way to examine the signal mask without modification.
+.Pp
+The system
+quietly disallows
+.Dv SIGKILL
+or
+.Dv SIGSTOP
+to be blocked.
+.Sh RETURN VALUES
+A 0 value indicated that the call succeeded.  A -1 return value
+indicates an error occurred and
+.Va errno
+is set to indicated the reason.
+.Sh ERRORS
+The
+.Fn sigprocmask
+call will fail and the signal mask will be unchanged if one
+of the following occurs:
+.Bl -tag -width Bq Er EINVAL
+.It Bq Er EINVAL
+.Fa how
+has a value other than those listed here.
+.Sh SEE ALSO
+.Xr kill 2 ,
+.Xr sigaction 2 ,
+.Xr sigsetops 3 ,
+.Xr sigsuspend 2
+.Sh STANDARDS
+The
+.Nm sigprocmask
+function call is expected to
+conform to
+.St -p1003.1-88 .
diff --git a/lib/libc/sys/sigreturn.2 b/lib/libc/sys/sigreturn.2
new file mode 100644
index 0000000..f995d11
--- /dev/null
+++ b/lib/libc/sys/sigreturn.2
@@ -0,0 +1,97 @@
+.\" Copyright (c) 1985, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)sigreturn.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SIGRETURN 2
+.Os BSD 4.3
+.Sh NAME
+.Nm sigreturn
+.Nd return from signal
+.Sh SYNOPSIS
+.Fd #include <signal.h>
+.Bd -literal
+struct sigcontext {
+	int sc_onstack;
+	int sc_mask;
+	int sc_sp;
+	int sc_fp;
+	int sc_ap;
+	int sc_pc;
+	int sc_ps;
+};
+.Ed
+.Ft int
+.Fn sigreturn "struct sigcontext *scp"
+.Sh DESCRIPTION
+.Fn Sigreturn
+allows users to atomically unmask, switch stacks,
+and return from a signal context.
+The processes signal mask and stack status are
+restored from the context.
+The system call does not return;
+the users stack pointer, frame pointer, argument pointer,
+and processor status longword are restored from the context.
+Execution resumes at the specified pc.
+This system call is used by the trampoline code and
+.Xr longjmp 3
+when returning from a signal to the previously executing program.
+.Sh NOTES
+This system call is not available in 4.2
+.Tn BSD
+hence it should not be used if backward compatibility is needed.
+.Sh RETURN VALUES
+If successful, the system call does not return.
+Otherwise, a value of -1 is returned and 
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Sigreturn
+will fail and the process context will remain unchanged
+if one of the following occurs.
+.Bl -tag -width [EINVAL]
+.It Bq Er EFAULT
+.Fa Scp
+points to memory that is not a valid part of the process
+address space.
+.It Bq Er EINVAL
+The process status longword is invalid or would improperly
+raise the privilege level of the process.
+.El
+.Sh SEE ALSO
+.Xr sigvec 2 ,
+.Xr setjmp 3
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.3 .
diff --git a/lib/libc/sys/sigstack.2 b/lib/libc/sys/sigstack.2
new file mode 100644
index 0000000..54d1c14
--- /dev/null
+++ b/lib/libc/sys/sigstack.2
@@ -0,0 +1,51 @@
+.\" Copyright (c) 1983, 1992, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)sigstack.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SIGSTACK 2
+.Os BSD 4.2
+.Sh NAME
+.Nm sigstack
+.Nd set and/or get signal stack context
+.Sh DESCRIPTION
+The 
+.Fn sigstack
+function has been deprecated in favor of the interface described in
+.Xr sigaltstack 2 .
+.Sh SEE ALSO
+.Xr sigaltstack 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/sigsuspend.2 b/lib/libc/sys/sigsuspend.2
new file mode 100644
index 0000000..a234454
--- /dev/null
+++ b/lib/libc/sys/sigsuspend.2
@@ -0,0 +1,80 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)sigsuspend.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SIGSUSPEND 2
+.Os
+.Sh NAME
+.Nm sigsuspend
+.Nd atomically release blocked signals and wait for interrupt
+.Sh SYNOPSIS
+.Fd #include <signal.h>
+.Ft int
+.Fn sigsuspend "const sigset_t *sigmask"
+.Sh DESCRIPTION
+.Fn Sigsuspend
+temporarily changes the blocked signal mask to the set to which
+.Fa sigmask
+points,
+and then waits for a signal to arrive;
+on return the previous set of masked signals is restored.
+The signal mask set
+is usually empty to indicate that all
+signals are to be unblocked for the duration of the call.
+.Pp
+In normal usage, a signal is blocked using
+.Xr sigprocmask 2
+to begin a critical section, variables modified on the occurrence
+of the signal are examined to determine that there is no work
+to be done, and the process pauses awaiting work by using
+.Fn sigsuspend
+with the previous mask returned by
+.Xr sigprocmask .
+.Sh RETURN VALUES
+The
+.Fn sigsuspend
+function
+always terminates by being interrupted, returning -1 with
+.Va errno
+set to
+.Dv EINTR .
+.Sh SEE ALSO
+.Xr sigprocmask 2 ,
+.Xr sigaction 2 ,
+.Xr sigsetops 3
+.Sh STANDARDS
+The
+.Nm sigsupend
+function call
+conforms to
+.St -p1003.1-88 .
diff --git a/lib/libc/sys/socket.2 b/lib/libc/sys/socket.2
new file mode 100644
index 0000000..e048b46
--- /dev/null
+++ b/lib/libc/sys/socket.2
@@ -0,0 +1,270 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     From: @(#)socket.2	8.1 (Berkeley) 6/4/93
+.\"	$Id$
+.\"
+.Dd February 15, 1995
+.Dt SOCKET 2
+.Os BSD 4.2
+.Sh NAME
+.Nm socket
+.Nd create an endpoint for communication
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/socket.h>
+.Ft int
+.Fn socket "int domain" "int type" "int protocol"
+.Sh DESCRIPTION
+.Fn Socket
+creates an endpoint for communication and returns a descriptor.
+.Pp
+The
+.Fa domain
+parameter specifies a communications domain within which
+communication will take place; this selects the protocol family
+which should be used.
+These families are defined in the include file
+.Ao Pa sys/socket.h Ac .
+The currently understood formats are
+.Pp
+.Bd -literal -offset indent -compact
+PF_LOCAL	(Host-internal protocols, formerly called PF_UNIX),
+PF_INET		(ARPA Internet protocols),
+PF_ISO		(ISO protocols),
+PF_CCITT	(ITU-T protocols, like X.25),
+PF_NS		(Xerox Network Systems protocols), and
+.\"PF_IMPLINK	(IMP \*(lqhost at IMP\*(rq link layer).
+.Ed
+.Pp
+The socket has the indicated
+.Fa type ,
+which specifies the semantics of communication.  Currently
+defined types are:
+.Pp
+.Bd -literal -offset indent -compact
+SOCK_STREAM
+SOCK_DGRAM
+SOCK_RAW
+SOCK_SEQPACKET
+SOCK_RDM
+.Ed
+.Pp
+A
+.Dv SOCK_STREAM
+type provides sequenced, reliable,
+two-way connection based byte streams.
+An out-of-band data transmission mechanism may be supported.
+A
+.Dv SOCK_DGRAM
+socket supports
+datagrams (connectionless, unreliable messages of
+a fixed (typically small) maximum length).
+A
+.Dv SOCK_SEQPACKET
+socket may provide a sequenced, reliable,
+two-way connection-based data transmission path for datagrams
+of fixed maximum length; a consumer may be required to read
+an entire packet with each read system call.
+This facility is protocol specific, and presently implemented
+only for
+.Dv PF_NS .
+.Dv SOCK_RAW
+sockets provide access to internal network protocols and interfaces.
+The types
+.Dv SOCK_RAW ,
+which is available only to the super-user, and
+.Dv SOCK_RDM ,
+which is planned,
+but not yet implemented, are not described here.
+.Pp
+The
+.Fa protocol
+specifies a particular protocol to be used with the socket.
+Normally only a single protocol exists to support a particular
+socket type within a given protocol family.  However, it is possible
+that many protocols may exist, in which case a particular protocol
+must be specified in this manner.  The protocol number to use is
+particular to the \*(lqcommunication domain\*(rq in which communication
+is to take place; see
+.Xr protocols 5 .
+.Pp
+Sockets of type
+.Dv SOCK_STREAM
+are full-duplex byte streams, similar
+to pipes.  A stream socket must be in a
+.Em connected
+state before any data may be sent or received
+on it.  A connection to another socket is created with a
+.Xr connect 2
+call.
+Once connected, data may be transferred using
+.Xr read 2
+and
+.Xr write 2
+calls or some variant of the 
+.Xr send 2
+and
+.Xr recv 2
+calls.
+(Some protocol families, such as the Internet family,
+support the notion of an
+.Dq implied connect,
+which permits data to be sent piggybacked onto a connect operation by
+using the
+.Xr sendto 2
+call.)
+When a session has been completed a
+.Xr close 2
+may be performed.
+Out-of-band data may also be transmitted as described in
+.Xr send 2
+and received as described in
+.Xr recv 2 .
+.Pp
+The communications protocols used to implement a
+.Dv SOCK_STREAM
+insure that data
+is not lost or duplicated.  If a piece of data for which the
+peer protocol has buffer space cannot be successfully transmitted
+within a reasonable length of time, then
+the connection is considered broken and calls
+will indicate an error with
+-1 returns and with
+.Dv ETIMEDOUT
+as the specific code
+in the global variable
+.Va errno .
+The protocols optionally keep sockets
+.Dq warm
+by forcing transmissions
+roughly every minute in the absence of other activity.
+An error is then indicated if no response can be
+elicited on an otherwise
+idle connection for a extended period (e.g. 5 minutes).
+A
+.Dv SIGPIPE
+signal is raised if a process sends
+on a broken stream; this causes naive processes,
+which do not handle the signal, to exit.
+.Pp
+.Dv SOCK_SEQPACKET
+sockets employ the same system calls
+as
+.Dv SOCK_STREAM
+sockets.  The only difference
+is that 
+.Xr read 2
+calls will return only the amount of data requested,
+and any remaining in the arriving packet will be discarded.
+.Pp
+.Dv SOCK_DGRAM
+and
+.Dv SOCK_RAW
+sockets allow sending of datagrams to correspondents
+named in
+.Xr send 2
+calls.  Datagrams are generally received with
+.Xr recvfrom 2 ,
+which returns the next datagram with its return address.
+.Pp
+An 
+.Xr fcntl 2
+call can be used to specify a process group to receive
+a
+.Dv SIGURG
+signal when the out-of-band data arrives.
+It may also enable non-blocking I/O
+and asynchronous notification of I/O events
+via
+.Dv SIGIO .
+.Pp
+The operation of sockets is controlled by socket level
+.Em options .
+These options are defined in the file
+.Ao Pa sys/socket.h Ac .
+.Xr Setsockopt 2
+and
+.Xr getsockopt 2
+are used to set and get options, respectively.
+.Sh RETURN VALUES
+A -1 is returned if an error occurs, otherwise the return
+value is a descriptor referencing the socket.
+.Sh ERRORS
+The
+.Fn socket
+call fails if:
+.Bl -tag -width EPROTONOPSUPPORTA
+.It Bq Er EPROTONOSUPPORT
+The protocol type or the specified protocol is not supported
+within this domain.
+.It Bq Er EMFILE
+The per-process descriptor table is full.
+.It Bq Er ENFILE
+The system file table is full.
+.It Bq Er EACCESS
+Permission to create a socket of the specified type and/or protocol
+is denied.
+.It Bq Er ENOBUFS
+Insufficient buffer space is available.
+The socket cannot be created until sufficient resources are freed.
+.El
+.Sh SEE ALSO
+.Xr accept 2 ,
+.Xr bind 2 ,
+.Xr connect 2 ,
+.Xr getprotoent 3 ,
+.Xr getsockname 2 ,
+.Xr getsockopt 2 ,
+.Xr ioctl 2 ,
+.Xr listen 2 ,
+.Xr read 2 ,
+.Xr recv 2 ,
+.Xr select 2 ,
+.Xr send 2 ,
+.Xr shutdown 2 ,
+.Xr socketpair 2 ,
+.Xr write 2
+.Rs
+.%T "An Introductory 4.3 BSD Interprocess Communication Tutorial"
+.%B PS1
+.%N 7
+.Re
+.Rs
+.%T "BSD Interprocess Communication Tutorial"
+.%B PS1
+.%N 8
+.Re
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/socketpair.2 b/lib/libc/sys/socketpair.2
new file mode 100644
index 0000000..1e8ba24
--- /dev/null
+++ b/lib/libc/sys/socketpair.2
@@ -0,0 +1,91 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)socketpair.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SOCKETPAIR 2
+.Os BSD 4.2
+.Sh NAME
+.Nm socketpair
+.Nd create a pair of connected sockets
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/socket.h>
+.Ft int
+.Fn socketpair "int d" "int type" "int protocol" "int *sv"
+.Sh DESCRIPTION
+The
+.Fn socketpair
+call creates an unnamed pair of connected sockets in
+the specified domain
+.Fa d ,
+of the specified
+.Fa type ,
+and using the optionally specified
+.Fa protocol .
+The descriptors used in referencing the new sockets
+are returned in
+.Fa sv Ns [0]
+and
+.Fa sv Ns [1] .
+The two sockets are indistinguishable.
+.Sh DIAGNOSTICS
+A 0 is returned if the call succeeds, -1 if it fails.
+.Sh ERRORS
+The call succeeds unless:
+.Bl -tag -width EPROTONOSUPPORTA
+.It Bq Er EMFILE
+Too many descriptors are in use by this process.
+.It Bq Er EAFNOSUPPORT
+The specified address family is not supported on this machine.
+.It Bq Er EPROTONOSUPPORT
+The specified protocol is not supported on this machine.
+.It Bq Er EOPNOSUPPORT
+The specified protocol does not support creation of socket pairs.
+.It Bq Er EFAULT
+The address
+.Fa sv
+does not specify a valid part of the
+process address space.
+.Sh SEE ALSO
+.Xr read 2 ,
+.Xr write 2 ,
+.Xr pipe 2
+.Sh BUGS
+This call is currently implemented only for the
+.Tn UNIX
+domain.
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/stat.2 b/lib/libc/sys/stat.2
new file mode 100644
index 0000000..8f78621
--- /dev/null
+++ b/lib/libc/sys/stat.2
@@ -0,0 +1,276 @@
+.\" Copyright (c) 1980, 1991, 1993, 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)stat.2	8.3 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt STAT 2
+.Os BSD 4
+.Sh NAME
+.Nm stat ,
+.Nm lstat ,
+.Nm fstat
+.Nd get file status
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/stat.h>
+.Ft int
+.Fn stat "const char *path" "struct stat *sb"
+.Ft int
+.Fn lstat "const char *path" "struct stat *sb"
+.Ft int
+.Fn fstat "int fd" "struct stat *sb"
+.Sh DESCRIPTION
+The
+.Fn stat
+function obtains information about the file pointed to by
+.Fa path .
+Read, write or execute
+permission of the named file is not required, but all directories
+listed in the path name leading to the file must be searchable.
+.Pp
+.Fn Lstat
+is like
+.Fn stat
+except in the case where the named file is a symbolic link,
+in which case
+.Fn lstat
+returns information about the link,
+while
+.Fn stat
+returns information about the file the link references.
+Unlike other filesystem objects,
+symbolic links do not have an owner, group, access mode, times, etc.
+Instead, these attributes are taken from the directory that
+contains the link.
+The only attributes returned from an
+.Fn lstat
+that refer to the symbolic link itself are the file type (S_IFLNK),
+size, blocks, and link count (always 1).
+.Pp
+The
+.Fn fstat
+obtains the same information about an open file
+known by the file descriptor
+.Fa fd .
+.Pp
+The
+.Fa sb
+argument is a pointer to a
+.Fn stat
+structure
+as defined by
+.Aq Pa sys/stat.h
+(shown below)
+and into which information is placed concerning the file.
+.Bd -literal
+struct stat {
+    dev_t    st_dev;    /* device inode resides on */
+    ino_t    st_ino;    /* inode's number */
+    mode_t   st_mode;   /* inode protection mode */
+    nlink_t  st_nlink;  /* number or hard links to the file */
+    uid_t    st_uid;    /* user-id of owner */
+    gid_t    st_gid;    /* group-id of owner */
+    dev_t    st_rdev;   /* device type, for special file inode */
+    struct timespec st_atimespec;  /* time of last access */
+    struct timespec st_mtimespec;  /* time of last data modification */
+    struct timespec st_ctimespec;  /* time of last file status change */
+    off_t    st_size;   /* file size, in bytes */
+    quad_t   st_blocks; /* blocks allocated for file */
+    u_long   st_blksize;/* optimal file sys I/O ops blocksize */
+    u_long   st_flags;  /* user defined flags for file */
+    u_long   st_gen;    /* file generation number */
+};
+.Ed
+.Pp
+The time-related fields of
+.Fa struct stat
+are as follows:
+.Bl -tag -width XXXst_mtime
+.It st_atime
+Time when file data last accessed.
+Changed by the
+.Xr mknod 2 ,
+.Xr utimes 2
+and
+.Xr read 2
+system calls.
+.It st_mtime
+Time when file data last modified.
+Changed by the
+.Xr mknod 2 ,
+.Xr utimes 2
+and
+.Xr write 2
+system calls.
+.It st_ctime
+Time when file status was last changed (inode data modification).
+Changed by the
+.Xr chmod 2 ,
+.Xr chown 2 ,
+.Xr link 2 ,
+.Xr mknod 2 ,
+.Xr rename 2 ,
+.Xr unlink 2 ,
+.Xr utimes 2
+and
+.Xr write 2
+system calls.
+.El
+.Pp
+The size-related fields of the
+.Fa struct stat
+are as follows:
+.Bl -tag -width XXXst_blksize
+.It st_blksize
+The optimal I/O block size for the file.
+.It st_blocks
+The actual number of blocks allocated for the file in 512-byte units.
+As short symbolic links are stored in the inode, this number may
+be zero.
+.El
+.Pp
+The status information word
+.Fa st_mode
+has the following bits:
+.Bd -literal
+#define S_IFMT 0170000           /* type of file */
+#define        S_IFIFO  0010000  /* named pipe (fifo) */
+#define        S_IFCHR  0020000  /* character special */
+#define        S_IFDIR  0040000  /* directory */
+#define        S_IFBLK  0060000  /* block special */
+#define        S_IFREG  0100000  /* regular */
+#define        S_IFLNK  0120000  /* symbolic link */
+#define        S_IFSOCK 0140000  /* socket */
+#define S_ISUID 0004000  /* set user id on execution */
+#define S_ISGID 0002000  /* set group id on execution */
+#define S_ISVTX 0001000  /* save swapped text even after use */
+#define S_IRUSR 0000400  /* read permission, owner */
+#define S_IWUSR 0000200  /* write permission, owner */
+#define S_IXUSR 0000100  /* execute/search permission, owner */
+.Ed
+.Pp
+For a list of access modes, see
+.Aq Pa sys/stat.h ,
+.Xr access 2
+and
+.Xr chmod 2 .
+.Sh RETURN VALUES
+Upon successful completion a value of 0 is returned.
+Otherwise, a value of -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh COMPATIBILITY
+Previous versions of the system used different types for the
+.Li st_dev ,
+.Li st_uid ,
+.Li st_gid ,
+.Li st_rdev ,
+.Li st_size ,
+.Li st_blksize
+and
+.Li st_blocks
+fields.
+.Sh ERRORS
+.Fn Stat
+and
+.Fn lstat
+will fail if:
+.Bl -tag -width ENAMETOOLONGAA
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named file does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EFAULT
+.Fa Sb
+or
+.Em name
+points to an invalid address.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.El
+.Pp
+.Bl -tag -width [EFAULT]
+.Fn Fstat
+will fail if:
+.It Bq Er EBADF
+.Fa fd
+is not a valid open file descriptor.
+.It Bq Er EFAULT
+.Fa Sb
+points to an invalid address.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.El
+.Sh CAVEAT
+The fields in the stat structure currently marked
+.Fa st_spare1 ,
+.Fa st_spare2 ,
+and
+.Fa st_spare3
+are present in preparation for inode time stamps expanding
+to 64 bits.  This, however, can break certain programs that
+depend on the time stamps being contiguous (in calls to
+.Xr utimes 2 ) .
+.Sh SEE ALSO
+.Xr chmod 2 ,
+.Xr chown 2 ,
+.Xr utimes 2
+.Xr symlink 7
+.Sh BUGS
+Applying
+.Xr fstat
+to a socket (and thus to a pipe)
+returns a zero'd buffer,
+except for the blocksize field,
+and a unique device and inode number.
+.Sh STANDARDS
+The
+.Fn stat
+and
+.Fn fstat
+function calls are expected to
+conform to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
+.Sh HISTORY
+A
+.Nm lstat
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/statfs.2 b/lib/libc/sys/statfs.2
new file mode 100644
index 0000000..a7a1da2
--- /dev/null
+++ b/lib/libc/sys/statfs.2
@@ -0,0 +1,161 @@
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)statfs.2	8.3 (Berkeley) 2/11/94
+.\"
+.Dd February 11, 1994
+.Dt STATFS 2
+.Os
+.Sh NAME
+.Nm statfs
+.Nd get file system statistics
+.Sh SYNOPSIS
+.Fd #include <sys/param.h>
+.Fd #include <sys/mount.h>
+.Ft int
+.Fn statfs "const char *path" "struct statfs *buf"
+.Ft int
+.Fn fstatfs "int fd" "struct statfs *buf"
+.Sh DESCRIPTION
+.Fn Statfs
+returns information about a mounted file system.
+.Fa Path
+is the path name of any file within the mounted filesystem.
+.Fa Buf
+is a pointer to a
+.Fn statfs
+structure defined as follows:
+.Bd -literal
+typedef quad fsid_t;
+
+#define MNAMELEN 90	/* length of buffer for returned name */
+
+struct statfs {
+short	f_type;		  /* type of filesystem (see below) */
+short	f_flags;	  /* copy of mount flags */
+long	f_bsize;	  /* fundamental file system block size */
+long	f_iosize;	  /* optimal transfer block size */
+long	f_blocks;	  /* total data blocks in file system */
+long	f_bfree;	  /* free blocks in fs */
+long	f_bavail;	  /* free blocks avail to non-superuser */
+long	f_files;	  /* total file nodes in file system */
+long	f_ffree;	  /* free file nodes in fs */
+fsid_t	f_fsid;		  /* file system id */
+long	f_spare[9];	  /* spare for later */
+char	f_mntonname[MNAMELEN];	  /* mount point */
+char	f_mntfromname[MNAMELEN];  /* mounted filesystem */
+};
+/*
+* File system types.
+*/
+#define	MOUNT_UFS	1	/* Fast Filesystem */
+#define	MOUNT_NFS	2	/* Sun-compatible Network Filesystem */
+#define	MOUNT_MFS	3	/* Memory-based Filesystem */
+#define	MOUNT_MSDOS	4	/* MS/DOS Filesystem */
+#define	MOUNT_LFS	5	/* Log-based Filesystem */
+#define	MOUNT_LOFS	6	/* Loopback Filesystem */
+#define	MOUNT_FDESC	7	/* File Descriptor Filesystem */
+#define	MOUNT_PORTAL	8	/* Portal Filesystem */
+#define MOUNT_NULL	9	/* Minimal Filesystem Layer */
+#define MOUNT_UMAP	10	/* Uid/Gid Remapping Filesystem */
+#define MOUNT_KERNFS	11	/* Kernel Information Filesystem */
+#define MOUNT_PROCFS	12	/* /proc Filesystem */
+#define MOUNT_AFS	13	/* Andrew Filesystem */
+#define MOUNT_CD9660	14	/* ISO9660 (aka CDROM) Filesystem */
+#define MOUNT_UNION	15	/* Union (translucent) Filesystem */
+.Ed
+.Pp
+Fields that are undefined for a particular file system are set to -1.
+.Fn Fstatfs
+returns the same information about an open file referenced by descriptor
+.Fa fd .
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.
+Otherwise, -1 is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Statfs
+fails if one or more of the following are true:
+.Bl -tag -width ENAMETOOLONGA
+.It Bq Er ENOTDIR
+A component of the path prefix of
+.Fa Path
+is not a directory.
+.It Bq Er EINVAL
+.Fa path
+contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+The length of a component of
+.Fa path
+exceeds 255 characters,
+or the length of
+.Fa path
+exceeds 1023 characters.
+.It Bq Er ENOENT
+The file referred to by
+.Fa path
+does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix of
+.Fa path .
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating
+.Fa path .
+.It Bq Er EFAULT
+.Fa Buf
+or
+.Fa path
+points to an invalid address.
+.It Bq Er EIO
+An
+.Tn I/O
+error occurred while reading from or writing to the file system.
+.El
+.Pp
+.Fn Fstatfs
+fails if one or more of the following are true:
+.Bl -tag -width ENAMETOOLONGA
+.It Bq Er EBADF
+.Fa Fd
+is not a valid open file descriptor.
+.It Bq Er EFAULT
+.Fa Buf
+points to an invalid address.
+.It Bq Er EIO
+An
+.Tn I/O
+error occurred while reading from or writing to the file system.
+.El
+.Sh HISTORY
+The
+.Nm statfs
+function first appeared in 4.4BSD.
diff --git a/lib/libc/sys/swapon.2 b/lib/libc/sys/swapon.2
new file mode 100644
index 0000000..5f152cc
--- /dev/null
+++ b/lib/libc/sys/swapon.2
@@ -0,0 +1,113 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)swapon.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SWAPON 2
+.Os BSD 4
+.Sh NAME
+.Nm swapon
+.Nd add a swap device for interleaved paging/swapping
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn swapon "const char *special"
+.Sh DESCRIPTION
+.Fn Swapon
+makes the block device 
+.Fa special
+available to the system for
+allocation for paging and swapping.  The names of potentially
+available devices are known to the system and defined at system
+configuration time.  The size of the swap area on 
+.Fa special
+is calculated at the time the device is first made available
+for swapping.
+.Sh RETURN VALUES
+If an error has occurred, a value of -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Swapon
+succeeds unless:
+.Bl -tag -width ENAMETOOLONG
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named device does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EPERM
+The caller is not the super-user.
+.It Bq Er ENOTBLK
+.Fa Special
+is not a block device.
+.It Bq Er EBUSY
+The device specified by
+.Fa special
+has already
+been made available for swapping
+.It Bq Er EINVAL
+The device configured by
+.Fa special
+was not
+configured into the system as a swap device.
+.It Bq Er ENXIO
+The major device number of 
+.Fa special
+is out of range (this indicates no device driver exists
+for the associated hardware).
+.It Bq Er EIO
+An I/O error occurred while opening the swap device.
+.It Bq Er EFAULT
+.Fa Special
+points outside the process's allocated address space.
+.Sh SEE ALSO
+.Xr swapon 8 ,
+.Xr config 8
+.Sh BUGS
+There is no way to stop swapping on a disk so that the pack may be
+dismounted.
+.Pp
+This call will be upgraded in future versions of the system.
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.0 .
diff --git a/lib/libc/sys/symlink.2 b/lib/libc/sys/symlink.2
new file mode 100644
index 0000000..c404a3d
--- /dev/null
+++ b/lib/libc/sys/symlink.2
@@ -0,0 +1,139 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)symlink.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SYMLINK 2
+.Os BSD 4.2
+.Sh NAME
+.Nm symlink
+.Nd make symbolic link to a file
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn symlink "const char *name1" "const char *name2"
+.Sh DESCRIPTION
+A symbolic link
+.Fa name2
+is created to
+.Fa name1
+.Pf ( Fa name2
+is the name of the
+file created,
+.Fa name1
+is the string
+used in creating the symbolic link).
+Either name may be an arbitrary path name; the files need not
+be on the same file system.
+.Sh RETURN VALUES
+Upon successful completion, a zero value is returned.
+If an error occurs, the error code is stored in
+.Va errno
+and a -1 value is returned.
+.Sh ERRORS
+The symbolic link succeeds unless:
+.Bl -tag -width ENAMETOO
+.It Bq Er ENOTDIR
+A component of the
+.Fa name2
+prefix is not a directory.
+.It Bq Er EINVAL
+Either
+.Fa name1
+or
+.Fa name2
+contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of either pathname exceeded 255 characters,
+or the entire length of either path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named file does not exist.
+.It Bq Er EACCES
+A component of the
+.Fa name2
+path prefix denies search permission.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EEXIST
+.Fa Name2
+already exists.
+.It Bq Er EIO
+An I/O error occurred while making the directory entry for
+.Fa name2 ,
+or allocating the inode for
+.Fa name2 ,
+or writing out the link contents of
+.Fa name2 .
+.It Bq Er EROFS
+The file
+.Fa name2
+would reside on a read-only file system.
+.It Bq Er ENOSPC
+The directory in which the entry for the new symbolic link is being placed
+cannot be extended because there is no space left on the file
+system containing the directory.
+.It Bq Er ENOSPC
+The new symbolic link cannot be created because there
+there is no space left on the file
+system that will contain the symbolic link.
+.It Bq Er ENOSPC
+There are no free inodes on the file system on which the
+symbolic link is being created.
+.It Bq Er EDQUOT
+The directory in which the entry for the new symbolic link
+is being placed cannot be extended because the
+user's quota of disk blocks on the file system
+containing the directory has been exhausted.
+.It Bq Er EDQUOT
+The new symbolic link cannot be created because the user's
+quota of disk blocks on the file system that will
+contain the symbolic link has been exhausted.
+.It Bq Er EDQUOT
+The user's quota of inodes on the file system on
+which the symbolic link is being created has been exhausted.
+.It Bq Er EIO
+An I/O error occurred while making the directory entry or allocating the inode.
+.It Bq Er EFAULT
+.Fa Name1
+or
+.Fa name2
+points outside the process's allocated address space.
+.El
+.Sh SEE ALSO
+.Xr link 2 ,
+.Xr ln 1 ,
+.Xr unlink 2
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/sync.2 b/lib/libc/sys/sync.2
new file mode 100644
index 0000000..5e79fef
--- /dev/null
+++ b/lib/libc/sys/sync.2
@@ -0,0 +1,73 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)sync.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt SYNC 2
+.Os BSD 4
+.Sh NAME
+.Nm sync
+.Nd "synchronize disk block in-core status with that on disk"
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft void
+.Fn sync void
+.Sh DESCRIPTION
+The 
+.Fn sync
+function forces a write of dirty (modified) buffers
+in the block buffer cache out
+to disk. The kernel keeps this information in core to reduce
+the number of disk I/O transfers required by the system.
+As information in the cache is lost after a system crash a
+.Fn sync
+call is issued
+frequently
+by the user process
+.Xr update 8
+(about every 30 seconds). 
+.Pp
+The function
+.Xr fsync 2
+may be used to synchronize individual file descriptor
+attributes.
+.Sh SEE ALSO
+.Xr fsync 2 ,
+.Xr sync 8 ,
+.Xr update 8
+.Sh BUGS
+.Fn Sync
+may return before the buffers are completely flushed.
+.Sh HISTORY
+A
+.Nm
+function call appeared in Version 6 AT&T UNIX.
diff --git a/lib/libc/sys/syscall.2 b/lib/libc/sys/syscall.2
new file mode 100644
index 0000000..2e020ad
--- /dev/null
+++ b/lib/libc/sys/syscall.2
@@ -0,0 +1,76 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)syscall.2	8.1 (Berkeley) 6/16/93
+.\"
+.Dd June 16, 1993
+.Dt SYSCALL 2
+.Os BSD 4
+.Sh NAME
+.Nm syscall ,
+.Nm __syscall
+.Nd indirect system call
+.Sh SYNOPSIS
+.Fd #include <sys/syscall.h>
+.Fd #include <unistd.h>
+.Ft int
+.Fn syscall "int number" "..."
+.Ft int
+.Fn __syscall "quad_t number" "..."
+.Sh DESCRIPTION
+.Fn Syscall
+performs the system call whose assembly language
+interface has the specified
+.Fa number
+with the specified arguments.
+Symbolic constants for system calls can be found in the header file
+.Ao Pa sys/syscall.h Ac .
+The
+.Nm __syscall
+form should be used when one or more of the parameters is a
+64-bit argument to ensure that argument alignment is correct.
+This system call is useful for testing new system calls that
+do not have entries in the C library.
+.Sh RETURN VALUES
+The return values are defined by the system call being invoked.
+In general, a 0 return value indicates success.
+A -1 return value indicates an error,
+and an error code is stored in
+.Va errno .
+.Sh BUGS
+There is no way to simulate system calls that have multiple return values
+such as
+.Xr pipe 2 .
+.Sh HISTORY
+The
+.Nm syscall
+function call appeared in
+.Bx 4.0 .
diff --git a/lib/libc/sys/truncate.2 b/lib/libc/sys/truncate.2
new file mode 100644
index 0000000..2a5f3a6
--- /dev/null
+++ b/lib/libc/sys/truncate.2
@@ -0,0 +1,123 @@
+.\" Copyright (c) 1983, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)truncate.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt TRUNCATE 2
+.Os BSD 4.2
+.Sh NAME
+.Nm truncate ,
+.Nm ftruncate
+.Nd truncate a file to a specified length
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn truncate "const char *path" "off_t length"
+.Ft int
+.Fn ftruncate "int fd" "off_t length"
+.Sh DESCRIPTION
+.Fn Truncate
+causes the file named by
+.Fa path
+or referenced by
+.Fa fd
+to be truncated to at most
+.Fa length
+bytes in size.  If the file previously
+was larger than this size, the extra data
+is lost.
+With
+.Fn ftruncate ,
+the file must be open for writing.
+.Sh RETURN VALUES
+A value of 0 is returned if the call succeeds.  If the call
+fails a -1 is returned, and the global variable
+.Va errno
+specifies the error.
+.Sh ERRORS
+.Fn Truncate
+succeeds unless:
+.Bl -tag -width [ENOTDIR]
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named file does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er EACCES
+The named file is not writable by the user.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EISDIR
+The named file is a directory.
+.It Bq Er EROFS
+The named file resides on a read-only file system.
+.It Bq Er ETXTBSY
+The file is a pure procedure (shared text) file that is being executed.
+.It Bq Er EIO
+An I/O error occurred updating the inode.
+.It Bq Er EFAULT
+.Fa Path
+points outside the process's allocated address space.
+.El
+.Pp
+.Fn Ftruncate
+succeeds unless:
+.Bl -tag -width [ENOTDIR]
+.It Bq Er EBADF
+The
+.Fa fd
+is not a valid descriptor.
+.It Bq Er EINVAL
+The
+.Fa fd
+references a socket, not a file.
+.It Bq Er EINVAL
+The
+.Fa fd
+is not open for writing.
+.El
+.Sh SEE ALSO
+.Xr open 2
+.Sh BUGS
+These calls should be generalized to allow ranges
+of bytes in a file to be discarded.
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/truncate.c b/lib/libc/sys/truncate.c
new file mode 100644
index 0000000..0d50cd7
--- /dev/null
+++ b/lib/libc/sys/truncate.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)truncate.c	8.1 (Berkeley) 6/17/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/syscall.h>
+
+/*
+ * This function provides 64-bit offset padding that
+ * is not supplied by GCC 1.X but is supplied by GCC 2.X.
+ */
+int
+truncate(path, length)
+	char 	*path;
+	off_t	length;
+{
+
+	return(__syscall((quad_t)SYS_truncate, path, 0, length));
+}
diff --git a/lib/libc/sys/umask.2 b/lib/libc/sys/umask.2
new file mode 100644
index 0000000..cec3f1d
--- /dev/null
+++ b/lib/libc/sys/umask.2
@@ -0,0 +1,82 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)umask.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt UMASK 2
+.Os BSD 4
+.Sh NAME
+.Nm umask
+.Nd set file creation mode mask
+.Sh SYNOPSIS
+.Fd #include <sys/stat.h>
+.Ft mode_t
+.Fn umask "mode_t numask"
+.Sh DESCRIPTION
+The
+.Fn umask
+routine sets the process's file mode creation mask to
+.Fa numask
+and returns the previous value of the mask.  The 9 low-order
+access permission
+bits of
+.Fa numask
+are used by system calls, including
+.Xr open 2 ,
+.Xr mkdir 2 ,
+and
+.Xr mkfifo 2 ,
+to turn off corresponding bits
+requested in file mode.
+(See
+.Xr chmod 2 ) .
+This clearing allows each user to restrict the default access
+to his files.
+.Pp
+The default mask value is S_IWGRP|S_IWOTH (022, write access for the
+owner only).
+Child processes inherit the mask of the calling process.
+.Sh RETURN VALUES
+The previous value of the file mode mask is returned by the call.
+.Sh ERRORS
+The
+.Fn umask
+function is always successful.
+.Sh SEE ALSO
+.Xr chmod 2 ,
+.Xr mknod 2 ,
+.Xr open 2
+.Sh STANDARDS
+The
+.Fn umask
+function call is expected to conform to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
diff --git a/lib/libc/sys/unlink.2 b/lib/libc/sys/unlink.2
new file mode 100644
index 0000000..78221bc
--- /dev/null
+++ b/lib/libc/sys/unlink.2
@@ -0,0 +1,112 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)unlink.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt UNLINK 2
+.Os BSD 4
+.Sh NAME
+.Nm unlink
+.Nd remove directory entry
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn unlink "const char *path"
+.Sh DESCRIPTION
+The
+.Fn unlink
+function
+removes the link named by
+.Fa path
+from its directory and decrements the link count of the
+file which was referenced by the link.
+If that decrement reduces the link count of the file
+to zero,
+and no process has the file open, then
+all resources associated with the file are reclaimed.
+If one or more process have the file open when the last link is removed,
+the link is removed, but the removal of the file is delayed until
+all references to it have been closed.
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.
+Otherwise, a value of -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+The
+.Fn unlink
+succeeds unless:
+.Bl -tag -width ENAMETOOLONGAA
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named file does not exist.
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix.
+.It Bq Er EACCES
+Write permission is denied on the directory containing the link
+to be removed.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er EPERM
+The named file is a directory and the effective user ID
+of the process is not the super-user.
+.It Bq Er EPERM
+The directory containing the file is marked sticky,
+and neither the containing directory nor the file to be removed
+are owned by the effective user ID.
+.It Bq Er EBUSY
+The entry to be unlinked is the mount point for a
+mounted file system.
+.It Bq Er EIO
+An I/O error occurred while deleting the directory entry
+or deallocating the inode.
+.It Bq Er EROFS
+The named file resides on a read-only file system.
+.It Bq Er EFAULT
+.Fa Path
+points outside the process's allocated address space.
+.El
+.Sh SEE ALSO
+.Xr close 2 ,
+.Xr link 2 ,
+.Xr rmdir 2
+.Xr symlink 7
+.Sh HISTORY
+An
+.Nm
+function call appeared in Version 6 AT&T UNIX.
diff --git a/lib/libc/sys/utimes.2 b/lib/libc/sys/utimes.2
new file mode 100644
index 0000000..1ebeb37
--- /dev/null
+++ b/lib/libc/sys/utimes.2
@@ -0,0 +1,118 @@
+.\" Copyright (c) 1990, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)utimes.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt UTIMES 2
+.Os BSD 4
+.Sh NAME
+.Nm utimes
+.Nd set file access and modification times
+.Sh SYNOPSIS
+.Fd #include <sys/time.h>
+.Ft int
+.Fn utimes "const char *file" "const struct timeval *times"
+.Sh DESCRIPTION
+The
+.Fn utimes
+function sets the access and modification times of the named file from
+the structures in the argument array
+.Fa times .
+.Pp
+The first structure is the access time, and the second is the modification
+time.
+.Pp
+If the times are specified (the
+.Fa times
+argument is
+.Pf non- Dv NULL )
+the caller must be the owner of the file or be the super-user.
+.Pp
+If the times are not specified (the
+.Fa times
+argument is
+.Dv NULL )
+the caller must be the owner of the file, have permission to
+write the file, or be the super-user.
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.
+Otherwise, a value of -1 is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Utimes
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EACCES
+Search permission is denied for a component of the path prefix;
+or the
+.Fa times
+argument is
+.Dv NULL
+and the effective user ID of the process does not
+match the owner of the file, and is not the super-user, and write
+access is denied.
+.It Bq Er EFAULT
+.Xr File
+or
+.Fa times
+points outside the process's allocated address space.
+.It Bq Er EINVAL
+The pathname contains a character with the high-order bit set.
+.It Bq Er EIO
+An I/O error occurred while reading or writing the affected inode.
+.It Bq Er ELOOP
+Too many symbolic links were encountered in translating the pathname.
+.It Bq Er ENAMETOOLONG
+A component of a pathname exceeded 255 characters,
+or an entire path name exceeded 1023 characters.
+.It Bq Er ENOENT
+The named file does not exist.
+.It Bq Er ENOTDIR
+A component of the path prefix is not a directory.
+.It Bq Er EPERM
+The
+.Fa times
+argument is not
+.Dv NULL
+and the calling process's effective user ID
+does not match the owner of the file and is not the super-user.
+.It Bq Er EROFS
+The file system containing the file is mounted read-only.
+.El
+.Sh SEE ALSO
+.Xr stat 2
+.Sh HISTORY
+The
+.Nm utimes
+function call appeared in
+.Bx 4.2 .
diff --git a/lib/libc/sys/vfork.2 b/lib/libc/sys/vfork.2
new file mode 100644
index 0000000..8b6e077
--- /dev/null
+++ b/lib/libc/sys/vfork.2
@@ -0,0 +1,126 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)vfork.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd June 4, 1993
+.Dt VFORK 2
+.Os BSD 4
+.Sh NAME
+.Nm vfork
+.Nd spawn new process in a virtual memory efficient way
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn vfork void
+.Sh DESCRIPTION
+.Fn Vfork
+can be used to create new processes without fully copying the address
+space of the old process, which is horrendously inefficient in a paged
+environment.  It is useful when the purpose of
+.Xr fork 2
+would have been to create a new system context for an
+.Xr execve .
+.Fn Vfork
+differs from
+.Xr fork
+in that the child borrows the parent's memory and thread of
+control until a call to
+.Xr execve 2
+or an exit (either by a call to
+.Xr exit 2
+or abnormally.)
+The parent process is suspended while the child is using its resources.
+.Pp
+.Fn Vfork
+returns 0 in the child's context and (later) the pid of the child in
+the parent's context.
+.Pp
+.Fn Vfork
+can normally be used just like
+.Xr fork .
+It does not work, however, to return while running in the childs context
+from the procedure that called
+.Fn vfork
+since the eventual return from
+.Fn vfork
+would then return to a no longer existent stack frame.
+Be careful, also, to call
+.Xr _exit
+rather than
+.Xr exit
+if you can't
+.Xr execve ,
+since
+.Xr exit
+will flush and close standard I/O channels, and thereby mess up the
+parent processes standard I/O data structures.
+(Even with
+.Xr fork
+it is wrong to call
+.Xr exit
+since buffered data would then be flushed twice.)
+.Sh SEE ALSO
+.Xr fork 2 ,
+.Xr execve 2 ,
+.Xr sigvec 2 ,
+.Xr wait 2 ,
+.Sh DIAGNOSTICS
+Same as for
+.Xr fork .
+.Sh BUGS
+This system call will be eliminated when proper system sharing
+mechanisms are implemented. 
+Users should not depend on the memory
+sharing semantics of
+.Xr vfork
+as it will, in that case, be made synonymous to
+.Xr fork .
+.Pp
+To avoid a possible deadlock situation,
+processes that are children in the middle
+of a
+.Fn vfork
+are never sent
+.Dv SIGTTOU
+or
+.Dv SIGTTIN
+signals; rather,
+output or
+.Xr ioctl 2
+calls
+are allowed
+and input attempts result in an end-of-file indication.
+.Sh HISTORY
+The
+.Nm
+function call appeared in
+.Bx 3.0 .
diff --git a/lib/libc/sys/wait.2 b/lib/libc/sys/wait.2
new file mode 100644
index 0000000..c0077b1
--- /dev/null
+++ b/lib/libc/sys/wait.2
@@ -0,0 +1,295 @@
+.\" Copyright (c) 1980, 1991, 1993, 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)wait.2	8.2 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 1994
+.Dt WAIT 2
+.Os BSD 4
+.Sh NAME
+.Nm wait ,
+.Nm waitpid ,
+.Nm wait4 ,
+.Nm wait3
+.Nd wait for process termination
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/wait.h>
+.Ft pid_t
+.Fn wait "int *status"
+.Fd #include <sys/time.h>
+.Fd #include <sys/resource.h>
+.Ft pid_t
+.Fn waitpid "pid_t wpid" "int *status" "int options"
+.Ft pid_t
+.Fn wait3 "int *status" "int options" "struct rusage *rusage"
+.Ft pid_t
+.Fn wait4 "pid_t wpid" "int *status" "int options" "struct rusage *rusage"
+.Sh DESCRIPTION
+The
+.Fn wait
+function suspends execution of its calling process until
+.Fa status
+information is available for a terminated child process,
+or a signal is received.
+On return from a successful 
+.Fn wait
+call, 
+the
+.Fa status
+area contains termination information about the process that exited
+as defined below.
+.Pp
+The
+.Fn wait4
+call provides a more general interface for programs
+that need to wait for certain child processes,
+that need resource utilization statistics accumulated by child processes,
+or that require options.
+The other wait functions are implemented using
+.Fn wait4 .
+.Pp
+The
+.Fa wpid
+parameter specifies the set of child processes for which to wait.
+If
+.Fa wpid
+is -1, the call waits for any child process.
+If
+.Fa wpid
+is 0,
+the call waits for any child process in the process group of the caller.
+If
+.Fa wpid
+is greater than zero, the call waits for the process with process id
+.Fa wpid .
+If
+.Fa wpid
+is less than -1, the call waits for any process whose process group id
+equals the absolute value of
+.Fa wpid .
+.Pp
+The
+.Fa status
+parameter is defined below.  The
+.Fa options
+parameter contains the bitwise OR of any of the following options.
+The
+.Dv WNOHANG
+option
+is used to indicate that the call should not block if
+there are no processes that wish to report status.
+If the
+.Dv WUNTRACED
+option is set,
+children of the current process that are stopped
+due to a
+.Dv SIGTTIN , SIGTTOU , SIGTSTP ,
+or
+.Dv SIGSTOP
+signal also have
+their status reported.
+.Pp
+If
+.Fa rusage
+is non-zero, a summary of the resources used by the terminated
+process and all its
+children is returned (this information is currently not available
+for stopped processes).
+.Pp
+When the
+.Dv WNOHANG
+option is specified and no processes
+wish to report status, 
+.Fn wait4
+returns a 
+process id
+of 0.
+.Pp
+The
+.Fn waitpid
+call is identical to
+.Fn wait4
+with an
+.Fa rusage
+value of zero.
+The older
+.Fn wait3
+call is the same as
+.Fn wait4
+with a
+.Fa wpid
+value of -1.
+.Pp
+The following macros may be used to test the manner of exit of the process.
+One of the first three macros will evaluate to a non-zero (true) value:
+.Bl -tag -width Ds
+.It Fn WIFEXITED status
+True if the process terminated normally by a call to
+.Xr _exit 2
+or
+.Xr exit 2 .
+.It Fn WIFSIGNALED status
+True if the process terminated due to receipt of a signal.
+.It Fn WIFSTOPPED status
+True if the process has not terminated, but has stopped and can be restarted.
+This macro can be true only if the wait call specified the
+.Dv WUNTRACED
+option
+or if the child process is being traced (see
+.Xr ptrace 2 ) .
+.El
+.Pp
+Depending on the values of those macros, the following macros
+produce the remaining status information about the child process:
+.Bl -tag -width Ds
+.It Fn WEXITSTATUS status
+If
+.Fn WIFEXITED status
+is true, evaluates to the low-order 8 bits
+of the argument passed to
+.Xr _exit 2
+or
+.Xr exit 2
+by the child.
+.It Fn WTERMSIG status
+If
+.Fn WIFSIGNALED status
+is true, evaluates to the number of the signal
+that caused the termination of the process.
+.It Fn WCOREDUMP status
+If
+.Fn WIFSIGNALED status
+is true, evaluates as true if the termination
+of the process was accompanied by the creation of a core file
+containing an image of the process when the signal was received.
+.It Fn WSTOPSIG status
+If
+.Fn WIFSTOPPED status
+is true, evaluates to the number of the signal
+that caused the process to stop.
+.El
+.Sh NOTES
+See
+.Xr sigaction 2
+for a list of termination signals.
+A status of 0 indicates normal termination.
+.Pp
+If a parent process terminates without
+waiting for all of its child processes to terminate,
+the remaining child processes are assigned the parent
+process 1 ID (the init process ID).
+.Pp
+If a signal is caught while any of the
+.Fn wait
+calls is pending,
+the call may be interrupted or restarted when the signal-catching routine
+returns,
+depending on the options in effect for the signal;
+see
+.Xr intro 2 ,
+System call restart.
+.Sh RETURN VALUES
+If
+.Fn wait
+returns due to a stopped
+or terminated child process, the process ID of the child
+is returned to the calling process.  Otherwise, a value of -1
+is returned and
+.Va errno
+is set to indicate the error.
+.Pp
+If
+.Fn wait4 ,
+.Fn wait3
+or
+.Fn waitpid
+returns due to a stopped
+or terminated child process, the process ID of the child
+is returned to the calling process.
+If there are no children not previously awaited,
+-1 is returned with
+.Va errno
+set to
+.Bq Er ECHILD .
+Otherwise, if
+.Dv WNOHANG
+is specified and there are
+no stopped or exited children,
+0 is returned.
+If an error is detected or a caught signal aborts the call,
+a value of -1
+is returned and
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Wait
+will fail and return immediately if:
+.Bl -tag -width Er
+.It Bq Er ECHILD
+The calling process has no existing unwaited-for
+child processes.
+.It Bq Er EFAULT
+The
+.Fa status
+or
+.Fa rusage
+arguments point to an illegal address.
+(May not be detected before exit of a child process.)
+.It Bq Er EINTR
+The call was interrupted by a caught signal,
+or the signal did not have the
+.Dv SA_RESTART
+flag set.
+.El
+.Sh STANDARDS
+The
+.Fn wait
+and
+.Fn waitpid
+functions are defined by POSIX;
+.Fn wait4
+and
+.Fn wait3
+are not specified by POSIX.
+The
+.Fn WCOREDUMP
+macro
+and the ability to restart a pending
+.Fn wait
+call are extensions to the POSIX interface.
+.Sh SEE ALSO
+.Xr exit 2 ,
+.Xr sigaction 2
+.Sh HISTORY
+A
+.Nm
+function call appeared in Version 6 AT&T UNIX.
diff --git a/lib/libc/sys/write.2 b/lib/libc/sys/write.2
new file mode 100644
index 0000000..de2d3ae
--- /dev/null
+++ b/lib/libc/sys/write.2
@@ -0,0 +1,205 @@
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)write.2	8.5 (Berkeley) 4/2/94
+.\"
+.Dd April 2, 1994
+.Dt WRITE 2
+.Os BSD 4
+.Sh NAME
+.Nm write ,
+.Nm writev
+.Nd write output
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/uio.h>
+.Fd #include <unistd.h>
+.Ft ssize_t
+.Fn write "int d" "const void *buf" "size_t nbytes"
+.Ft ssize_t
+.Fn writev "int d" "const struct iovec *iov" "int iovcnt"
+.Sh DESCRIPTION
+.Fn Write
+attempts to write
+.Fa nbytes
+of data to the object referenced by the descriptor
+.Fa d
+from the buffer pointed to by
+.Fa buf .
+.Fn Writev
+performs the same action, but gathers the output data
+from the 
+.Fa iovcnt
+buffers specified by the members of the
+.Fa iov
+array: iov[0], iov[1], ..., iov[iovcnt\|-\|1].
+.Pp
+For 
+.Fn writev ,
+the 
+.Fa iovec
+structure is defined as:
+.Pp
+.Bd -literal -offset indent -compact
+struct iovec {
+	void *iov_base;
+	size_t iov_len;
+};
+.Ed
+.Pp
+Each 
+.Fa iovec
+entry specifies the base address and length of an area
+in memory from which data should be written.
+.Fn Writev
+will always write a complete area before proceeding
+to the next.
+.Pp
+On objects capable of seeking, the
+.Fn write
+starts at a position
+given by the pointer associated with
+.Fa d ,
+see
+.Xr lseek 2 .
+Upon return from
+.Fn write ,
+the pointer is incremented by the number of bytes which were written.
+.Pp
+Objects that are not capable of seeking always write from the current
+position.  The value of the pointer associated with such an object
+is undefined.
+.Pp
+If the real user is not the super-user, then
+.Fn write
+clears the set-user-id bit on a file.
+This prevents penetration of system security
+by a user who
+.Dq captures
+a writable set-user-id file
+owned by the super-user.
+.Pp
+When using non-blocking I/O on objects such as sockets that are subject
+to flow control,
+.Fn write
+and
+.Fn writev
+may write fewer bytes than requested;
+the return value must be noted,
+and the remainder of the operation should be retried when possible.
+.Sh RETURN VALUES
+Upon successful completion the number of bytes which were written
+is returned.  Otherwise a -1 is returned and the global variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn Write
+and
+.Fn writev
+will fail and the file pointer will remain unchanged if:
+.Bl -tag -width Er
+.It Bq Er EBADF
+.Fa D
+is not a valid descriptor open for writing.
+.It Bq Er EPIPE
+An attempt is made to write to a pipe that is not open
+for reading by any process.
+.It Bq Er EPIPE
+An attempt is made to write to a socket of type
+.DV SOCK_STREAM
+that is not connected to a peer socket.
+.It Bq Er EFBIG
+An attempt was made to write a file that exceeds the process's
+file size limit or the maximum file size.
+.It Bq Er EFAULT
+Part of
+.Fa iov
+or data to be written to the file
+points outside the process's allocated address space.
+.It Bq Er EINVAL
+The pointer associated with
+.Fa d
+was negative.
+.It Bq Er ENOSPC
+There is no free space remaining on the file system
+containing the file.
+.It Bq Er EDQUOT
+The user's quota of disk blocks on the file system
+containing the file has been exhausted.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EAGAIN
+The file was marked for non-blocking I/O,
+and no data could be written immediately.
+.El
+.Pp
+In addition, 
+.Fn writev
+may return one of the following errors:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+.Fa Iovcnt
+was less than or equal to 0, or greater than
+.Dv UIO_MAXIOV .
+.It Bq Er EINVAL
+One of the
+.Fa iov_len
+values in the
+.Fa iov
+array was negative.
+.It Bq Er EINVAL
+The sum of the
+.Fa iov_len
+values in the
+.Fa iov
+array overflowed a 32-bit integer.
+.El
+.Sh SEE ALSO
+.Xr fcntl 2 ,
+.Xr lseek 2 ,
+.Xr open 2 ,
+.Xr pipe 2 ,
+.Xr select 2
+.Sh STANDARDS
+.Fn Write
+is expected to conform to IEEE Std 1003.1-1988
+.Pq Dq Tn POSIX .
+.Sh HISTORY
+The
+.Fn writev
+function call
+appeared in
+.Bx 4.2 .
+A
+.Nm write
+function call
+appeared in
+Version 6 AT&T UNIX.
diff --git a/lib/libc/xdr/Makefile.inc b/lib/libc/xdr/Makefile.inc
new file mode 100644
index 0000000..d41fb72
--- /dev/null
+++ b/lib/libc/xdr/Makefile.inc
@@ -0,0 +1,7 @@
+#	@(#)Makefile	5.11 (Berkeley) 9/6/90
+
+.PATH: ${.CURDIR}/xdr ${.CURDIR}/.
+SRCS+=	xdr.c xdr_array.c xdr_float.c xdr_mem.c \
+	xdr_rec.c xdr_reference.c xdr_stdio.c
+
+MAN3+=	xdr/xdr.3
diff --git a/lib/libc/xdr/xdr.3 b/lib/libc/xdr/xdr.3
new file mode 100644
index 0000000..b656ea8
--- /dev/null
+++ b/lib/libc/xdr/xdr.3
@@ -0,0 +1,823 @@
+.\" @(#)xdr.3n	2.2 88/08/03 4.0 RPCSRC; from 1.16 88/03/14 SMI
+.TH XDR 3N "16 February 1988"
+.SH NAME
+xdr \- library routines for external data representation
+.SH SYNOPSIS AND DESCRIPTION
+.LP
+These routines allow C programmers to describe
+arbitrary data structures in a machine-independent fashion.
+Data for remote procedure calls are transmitted using these
+routines.
+.LP
+.ft B
+.nf
+.sp .5
+xdr_array(xdrs, arrp, sizep, maxsize, elsize, elproc)
+\s-1XDR\s0 *xdrs;
+char **arrp;
+u_int *sizep, maxsize, elsize;
+xdrproc_t elproc;
+.fi
+.ft R
+.IP
+A filter primitive that translates between variable-length
+arrays
+and their corresponding external representations. The
+parameter
+.I arrp
+is the address of the pointer to the array, while
+.I sizep
+is the address of the element count of the array;
+this element count cannot exceed
+.IR maxsize .
+The parameter
+.I elsize
+is the
+.I sizeof
+each of the array's elements, and
+.I elproc
+is an
+.SM XDR
+filter that translates between
+the array elements' C form, and their external
+representation.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+xdr_bool(xdrs, bp)
+\s-1XDR\s0 *xdrs;
+bool_t *bp;
+.fi
+.ft R
+.IP
+A filter primitive that translates between booleans (C
+integers)
+and their external representations. When encoding data, this
+filter produces values of either one or zero.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 10
+.LP
+.ft B
+.nf
+.sp .5
+xdr_bytes(xdrs, sp, sizep, maxsize)
+\s-1XDR\s0 *xdrs;
+char **sp;
+u_int *sizep, maxsize;
+.fi
+.ft R
+.IP
+A filter primitive that translates between counted byte
+strings and their external representations.
+The parameter
+.I sp
+is the address of the string pointer. The length of the
+string is located at address
+.IR sizep ;
+strings cannot be longer than
+.IR maxsize .
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+xdr_char(xdrs, cp)
+\s-1XDR\s0 *xdrs;
+char *cp;
+.fi
+.ft R
+.IP
+A filter primitive that translates between C characters
+and their external representations.
+This routine returns one if it succeeds, zero otherwise.
+Note: encoded characters are not packed, and occupy 4 bytes
+each. For arrays of characters, it is worthwhile to
+consider
+.BR xdr_bytes(\|) ,
+.B xdr_opaque(\|)
+or
+.BR xdr_string(\|) .
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+void
+xdr_destroy(xdrs)
+\s-1XDR\s0 *xdrs;
+.fi
+.ft R
+.IP
+A macro that invokes the destroy routine associated with the
+.SM XDR
+stream,
+.IR xdrs .
+Destruction usually involves freeing private data structures
+associated with the stream.  Using
+.I xdrs
+after invoking
+.B xdr_destroy(\|)
+is undefined.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+xdr_double(xdrs, dp)
+\s-1XDR\s0 *xdrs;
+double *dp;
+.fi
+.ft R
+.IP
+A filter primitive that translates between C
+.B double
+precision numbers and their external representations.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+xdr_enum(xdrs, ep)
+\s-1XDR\s0 *xdrs;
+enum_t *ep;
+.fi
+.ft R
+.IP
+A filter primitive that translates between C
+.BR enum s
+(actually integers) and their external representations.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+xdr_float(xdrs, fp)
+\s-1XDR\s0 *xdrs;
+float *fp;
+.fi
+.ft R
+.IP
+A filter primitive that translates between C
+.BR float s
+and their external representations.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 9
+.LP
+.ft B
+.nf
+.sp .5
+void
+xdr_free(proc, objp)
+xdrproc_t proc;
+char *objp;
+.fi
+.ft R
+.IP
+Generic freeing routine. The first argument is the
+.SM XDR
+routine for the object being freed. The second argument
+is a pointer to the object itself. Note: the pointer passed
+to this routine is
+.I not
+freed, but what it points to
+.I is
+freed (recursively).
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+u_int
+xdr_getpos(xdrs)
+\s-1XDR\s0 *xdrs;
+.fi
+.ft R
+.IP
+A macro that invokes the get-position routine
+associated with the
+.SM XDR
+stream,
+.IR xdrs .
+The routine returns an unsigned integer,
+which indicates the position of the
+.SM XDR
+byte stream.
+A desirable feature of
+.SM XDR
+streams is that simple arithmetic works with this number,
+although the
+.SM XDR
+stream instances need not guarantee this.
+.br
+.if t .ne 4
+.LP
+.ft B
+.nf
+.sp .5
+.br
+long *
+xdr_inline(xdrs, len)
+\s-1XDR\s0 *xdrs;
+int len;
+.fi
+.ft R
+.IP
+A macro that invokes the in-line routine associated with the
+.SM XDR
+stream,
+.IR xdrs .
+The routine returns a pointer
+to a contiguous piece of the stream's buffer;
+.I len
+is the byte length of the desired buffer.
+Note: pointer is cast to
+.BR "long *" .
+.IP
+Warning:
+.B xdr_inline(\|)
+may return
+.SM NULL
+(0)
+if it cannot allocate a contiguous piece of a buffer.
+Therefore the behavior may vary among stream instances;
+it exists for the sake of efficiency.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+xdr_int(xdrs, ip)
+\s-1XDR\s0 *xdrs;
+int *ip;
+.fi
+.ft R
+.IP
+A filter primitive that translates between C integers
+and their external representations.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+xdr_long(xdrs, lp)
+\s-1XDR\s0 *xdrs;
+long *lp;
+.fi
+.ft R
+.IP
+A filter primitive that translates between C
+.B long
+integers and their external representations.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 12
+.LP
+.ft B
+.nf
+.sp .5
+void
+xdrmem_create(xdrs, addr, size, op)
+\s-1XDR\s0 *xdrs;
+char *addr;
+u_int size;
+enum xdr_op op;
+.fi
+.ft R
+.IP
+This routine initializes the
+.SM XDR
+stream object pointed to by
+.IR xdrs .
+The stream's data is written to, or read from,
+a chunk of memory at location
+.I addr
+whose length is no more than
+.I size
+bytes long.  The
+.I op
+determines the direction of the
+.SM XDR
+stream
+(either
+.BR \s-1XDR_ENCODE\s0 ,
+.BR \s-1XDR_DECODE\s0 ,
+or
+.BR \s-1XDR_FREE\s0 ).
+.br
+.if t .ne 10
+.LP
+.ft B
+.nf
+.sp .5
+xdr_opaque(xdrs, cp, cnt)
+\s-1XDR\s0 *xdrs;
+char *cp;
+u_int cnt;
+.fi
+.ft R
+.IP
+A filter primitive that translates between fixed size opaque
+data
+and its external representation.
+The parameter
+.I cp
+is the address of the opaque object, and
+.I cnt
+is its size in bytes.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 10
+.LP
+.ft B
+.nf
+.sp .5
+xdr_pointer(xdrs, objpp, objsize, xdrobj)
+\s-1XDR\s0 *xdrs;
+char **objpp;
+u_int objsize;
+xdrproc_t xdrobj;
+.fi
+.ft R
+.IP
+Like
+.B xdr_reference(\|)
+execpt that it serializes
+.SM NULL
+pointers, whereas
+.B xdr_reference(\|)
+does not.  Thus,
+.B xdr_pointer(\|)
+can represent
+recursive data structures, such as binary trees or
+linked lists.
+.br
+.if t .ne 15
+.LP
+.ft B
+.nf
+.sp .5
+void
+xdrrec_create(xdrs, sendsize, recvsize, handle, readit, writeit)
+\s-1XDR\s0 *xdrs;
+u_int sendsize, recvsize;
+char *handle;
+int (*readit) (\|), (*writeit) (\|);
+.fi
+.ft R
+.IP
+This routine initializes the
+.SM XDR
+stream object pointed to by
+.IR xdrs .
+The stream's data is written to a buffer of size
+.IR sendsize ;
+a value of zero indicates the system should use a suitable
+default. The stream's data is read from a buffer of size
+.IR recvsize ;
+it too can be set to a suitable default by passing a zero
+value.
+When a stream's output buffer is full,
+.I writeit
+is called.  Similarly, when a stream's input buffer is empty,
+.I readit
+is called.  The behavior of these two routines is similar to
+the
+system calls
+.B read
+and
+.BR write ,
+except that
+.I handle
+is passed to the former routines as the first parameter.
+Note: the
+.SM XDR
+stream's
+.I op
+field must be set by the caller.
+.IP
+Warning: this
+.SM XDR
+stream implements an intermediate record stream.
+Therefore there are additional bytes in the stream
+to provide record boundary information.
+.br
+.if t .ne 9
+.LP
+.ft B
+.nf
+.sp .5
+xdrrec_endofrecord(xdrs, sendnow)
+\s-1XDR\s0 *xdrs;
+int sendnow;
+.fi
+.ft R
+.IP
+This routine can be invoked only on
+streams created by
+.BR xdrrec_create(\|) .
+The data in the output buffer is marked as a completed
+record,
+and the output buffer is optionally written out if
+.I sendnow
+is non-zero. This routine returns one if it succeeds, zero
+otherwise.
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+xdrrec_eof(xdrs)
+\s-1XDR\s0 *xdrs;
+int empty;
+.fi
+.ft R
+.IP
+This routine can be invoked only on
+streams created by
+.BR xdrrec_create(\|) .
+After consuming the rest of the current record in the stream,
+this routine returns one if the stream has no more input,
+zero otherwise.
+.br
+.if t .ne 3
+.LP
+.ft B
+.nf
+.sp .5
+xdrrec_skiprecord(xdrs)
+\s-1XDR\s0 *xdrs;
+.fi
+.ft R
+.IP
+This routine can be invoked only on
+streams created by
+.BR xdrrec_create(\|) .
+It tells the
+.SM XDR
+implementation that the rest of the current record
+in the stream's input buffer should be discarded.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 11
+.LP
+.ft B
+.nf
+.sp .5
+xdr_reference(xdrs, pp, size, proc)
+\s-1XDR\s0 *xdrs;
+char **pp;
+u_int size;
+xdrproc_t proc;
+.fi
+.ft R
+.IP
+A primitive that provides pointer chasing within structures.
+The parameter
+.I pp
+is the address of the pointer;
+.I size
+is the
+.I sizeof
+the structure that
+.I *pp
+points to; and
+.I proc
+is an
+.SM XDR
+procedure that filters the structure
+between its C form and its external representation.
+This routine returns one if it succeeds, zero otherwise.
+.IP
+Warning: this routine does not understand
+.SM NULL
+pointers. Use
+.B xdr_pointer(\|)
+instead.
+.br
+.if t .ne 10
+.LP
+.ft B
+.nf
+.sp .5
+xdr_setpos(xdrs, pos)
+\s-1XDR\s0 *xdrs;
+u_int pos;
+.fi
+.ft R
+.IP
+A macro that invokes the set position routine associated with
+the
+.SM XDR
+stream
+.IR xdrs .
+The parameter
+.I pos
+is a position value obtained from
+.BR xdr_getpos(\|) .
+This routine returns one if the
+.SM XDR
+stream could be repositioned,
+and zero otherwise.
+.IP
+Warning: it is difficult to reposition some types of
+.SM XDR
+streams, so this routine may fail with one
+type of stream and succeed with another.
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+xdr_short(xdrs, sp)
+\s-1XDR\s0 *xdrs;
+short *sp;
+.fi
+.ft R
+.IP
+A filter primitive that translates between C
+.B short
+integers and their external representations.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 10
+.LP
+.ft B
+.nf
+.sp .5
+void
+xdrstdio_create(xdrs, file, op)
+\s-1XDR\s0 *xdrs;
+\s-1FILE\s0 *file;
+enum xdr_op op;
+.fi
+.ft R
+.IP
+This routine initializes the
+.SM XDR
+stream object pointed to by
+.IR xdrs .
+The
+.SM XDR
+stream data is written to, or read from, the Standard
+.B I/O
+stream
+.IR file .
+The parameter
+.I op
+determines the direction of the
+.SM XDR
+stream (either
+.BR \s-1XDR_ENCODE\s0 ,
+.BR \s-1XDR_DECODE\s0 ,
+or
+.BR \s-1XDR_FREE\s0 ).
+.IP
+Warning: the destroy routine associated with such
+.SM XDR
+streams calls
+.B fflush(\|)
+on the
+.I file
+stream, but never
+.BR fclose(\|) .
+.br
+.if t .ne 9
+.LP
+.ft B
+.nf
+.sp .5
+xdr_string(xdrs, sp, maxsize)
+\s-1XDR\s0
+*xdrs;
+char **sp;
+u_int maxsize;
+.fi
+.ft R
+.IP
+A filter primitive that translates between C strings and
+their
+corresponding external representations.
+Strings cannot be longer than
+.IR maxsize .
+Note: 
+.I sp
+is the address of the string's pointer.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 8
+.LP
+.ft B
+.nf
+.sp .5
+xdr_u_char(xdrs, ucp)
+\s-1XDR\s0 *xdrs;
+unsigned char *ucp;
+.fi
+.ft R
+.IP
+A filter primitive that translates between
+.B unsigned
+C characters and their external representations.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 9
+.LP
+.ft B
+.nf
+.sp .5
+xdr_u_int(xdrs, up)
+\s-1XDR\s0 *xdrs;
+unsigned *up;
+.fi
+.ft R
+.IP
+A filter primitive that translates between C
+.B unsigned
+integers and their external representations.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+xdr_u_long(xdrs, ulp)
+\s-1XDR\s0 *xdrs;
+unsigned long *ulp;
+.fi
+.ft R
+.IP
+A filter primitive that translates between C
+.B "unsigned long"
+integers and their external representations.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 7
+.LP
+.ft B
+.nf
+.sp .5
+xdr_u_short(xdrs, usp)
+\s-1XDR\s0 *xdrs;
+unsigned short *usp;
+.fi
+.ft R
+.IP
+A filter primitive that translates between C
+.B "unsigned short"
+integers and their external representations.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 16
+.LP
+.ft B
+.nf
+.sp .5
+xdr_union(xdrs, dscmp, unp, choices, dfault)
+\s-1XDR\s0 *xdrs;
+int *dscmp;
+char *unp;
+struct xdr_discrim *choices;
+bool_t (*defaultarm) (\|);  /* may equal \s-1NULL\s0 */
+.fi
+.ft R
+.IP
+A filter primitive that translates between a discriminated C
+.B union
+and its corresponding external representation. It first
+translates the discriminant of the union located at
+.IR dscmp .
+This discriminant is always an
+.BR enum_t .
+Next the union located at
+.I unp
+is translated.  The parameter
+.I choices
+is a pointer to an array of
+.B xdr_discrim(\|)
+structures. Each structure contains an ordered pair of
+.RI [ value , proc ].
+If the union's discriminant is equal to the associated
+.IR value ,
+then the
+.I proc
+is called to translate the union.  The end of the
+.B xdr_discrim(\|)
+structure array is denoted by a routine of value
+.SM NULL\s0.
+If the discriminant is not found in the
+.I choices
+array, then the
+.I defaultarm
+procedure is called (if it is not
+.SM NULL\s0).
+Returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 6
+.LP
+.ft B
+.nf
+.sp .5
+xdr_vector(xdrs, arrp, size, elsize, elproc)
+\s-1XDR\s0 *xdrs;
+char *arrp;
+u_int size, elsize;
+xdrproc_t elproc;
+.fi
+.ft R
+.IP
+A filter primitive that translates between fixed-length
+arrays
+and their corresponding external representations.  The
+parameter
+.I arrp
+is the address of the pointer to the array, while
+.I size
+is is the element count of the array.  The parameter
+.I elsize
+is the
+.I sizeof
+each of the array's elements, and
+.I elproc
+is an
+.SM XDR
+filter that translates between
+the array elements' C form, and their external
+representation.
+This routine returns one if it succeeds, zero otherwise.
+.br
+.if t .ne 5
+.LP
+.ft B
+.nf
+.sp .5
+xdr_void(\|)
+.fi
+.ft R
+.IP
+This routine always returns one.
+It may be passed to
+.SM RPC
+routines that require a function parameter,
+where nothing is to be done.
+.br
+.if t .ne 10
+.LP
+.ft B
+.nf
+.sp .5
+xdr_wrapstring(xdrs, sp)
+\s-1XDR\s0 *xdrs;
+char **sp;
+.fi
+.ft R
+.IP
+A primitive that calls
+.B "xdr_string(xdrs, sp,\s-1MAXUN.UNSIGNED\s0 );"
+where
+.B
+.SM MAXUN.UNSIGNED
+is the maximum value of an unsigned integer.
+.B xdr_wrapstring(\|)
+is handy because the
+.SM RPC
+package passes a maximum of two
+.SM XDR
+routines as parameters, and
+.BR xdr_string(\|) ,
+one of the most frequently used primitives, requires three.
+Returns one if it succeeds, zero otherwise.
+.SH SEE ALSO
+.BR rpc (3N)
+.LP
+The following manuals:
+.RS
+.ft I
+eXternal Data Representation Standard: Protocol Specification
+.br
+eXternal Data Representation: Sun Technical Notes
+.ft R
+.br
+.IR "\s-1XDR\s0: External Data Representation Standard" ,
+.SM RFC1014, Sun Microsystems, Inc.,
+.SM USC-ISI\s0.
diff --git a/lib/libc/xdr/xdr.c b/lib/libc/xdr/xdr.c
new file mode 100644
index 0000000..87b4f7a
--- /dev/null
+++ b/lib/libc/xdr/xdr.c
@@ -0,0 +1,579 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)xdr.c 1.35 87/08/12";*/
+/*static char *sccsid = "from: @(#)xdr.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: xdr.c,v 1.2 1995/05/30 05:42:03 rgrimes Exp $";
+#endif
+
+/*
+ * xdr.c, Generic XDR routines implementation.
+ *
+ * Copyright (C) 1986, Sun Microsystems, Inc.
+ *
+ * These are the "generic" xdr routines used to serialize and de-serialize
+ * most common data items.  See xdr.h for more info on the interface to
+ * xdr.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <rpc/types.h>
+#include <rpc/xdr.h>
+
+/*
+ * constants specific to the xdr "protocol"
+ */
+#define XDR_FALSE	((long) 0)
+#define XDR_TRUE	((long) 1)
+#define LASTUNSIGNED	((u_int) 0-1)
+
+/*
+ * for unit alignment
+ */
+static char xdr_zero[BYTES_PER_XDR_UNIT] = { 0, 0, 0, 0 };
+
+/*
+ * Free a data structure using XDR
+ * Not a filter, but a convenient utility nonetheless
+ */
+void
+xdr_free(proc, objp)
+	xdrproc_t proc;
+	char *objp;
+{
+	XDR x;
+
+	x.x_op = XDR_FREE;
+	(*proc)(&x, objp);
+}
+
+/*
+ * XDR nothing
+ */
+bool_t
+xdr_void(/* xdrs, addr */)
+	/* XDR *xdrs; */
+	/* caddr_t addr; */
+{
+
+	return (TRUE);
+}
+
+/*
+ * XDR integers
+ */
+bool_t
+xdr_int(xdrs, ip)
+	XDR *xdrs;
+	int *ip;
+{
+
+#ifdef lint
+	(void) (xdr_short(xdrs, (short *)ip));
+	return (xdr_long(xdrs, (long *)ip));
+#else
+	if (sizeof (int) == sizeof (long)) {
+		return (xdr_long(xdrs, (long *)ip));
+	} else {
+		return (xdr_short(xdrs, (short *)ip));
+	}
+#endif
+}
+
+/*
+ * XDR unsigned integers
+ */
+bool_t
+xdr_u_int(xdrs, up)
+	XDR *xdrs;
+	u_int *up;
+{
+
+#ifdef lint
+	(void) (xdr_short(xdrs, (short *)up));
+	return (xdr_u_long(xdrs, (u_long *)up));
+#else
+	if (sizeof (u_int) == sizeof (u_long)) {
+		return (xdr_u_long(xdrs, (u_long *)up));
+	} else {
+		return (xdr_short(xdrs, (short *)up));
+	}
+#endif
+}
+
+/*
+ * XDR long integers
+ * same as xdr_u_long - open coded to save a proc call!
+ */
+bool_t
+xdr_long(xdrs, lp)
+	register XDR *xdrs;
+	long *lp;
+{
+
+	if (xdrs->x_op == XDR_ENCODE)
+		return (XDR_PUTLONG(xdrs, lp));
+
+	if (xdrs->x_op == XDR_DECODE)
+		return (XDR_GETLONG(xdrs, lp));
+
+	if (xdrs->x_op == XDR_FREE)
+		return (TRUE);
+
+	return (FALSE);
+}
+
+/*
+ * XDR unsigned long integers
+ * same as xdr_long - open coded to save a proc call!
+ */
+bool_t
+xdr_u_long(xdrs, ulp)
+	register XDR *xdrs;
+	u_long *ulp;
+{
+
+	if (xdrs->x_op == XDR_DECODE)
+		return (XDR_GETLONG(xdrs, (long *)ulp));
+	if (xdrs->x_op == XDR_ENCODE)
+		return (XDR_PUTLONG(xdrs, (long *)ulp));
+	if (xdrs->x_op == XDR_FREE)
+		return (TRUE);
+	return (FALSE);
+}
+
+/*
+ * XDR short integers
+ */
+bool_t
+xdr_short(xdrs, sp)
+	register XDR *xdrs;
+	short *sp;
+{
+	long l;
+
+	switch (xdrs->x_op) {
+
+	case XDR_ENCODE:
+		l = (long) *sp;
+		return (XDR_PUTLONG(xdrs, &l));
+
+	case XDR_DECODE:
+		if (!XDR_GETLONG(xdrs, &l)) {
+			return (FALSE);
+		}
+		*sp = (short) l;
+		return (TRUE);
+
+	case XDR_FREE:
+		return (TRUE);
+	}
+	return (FALSE);
+}
+
+/*
+ * XDR unsigned short integers
+ */
+bool_t
+xdr_u_short(xdrs, usp)
+	register XDR *xdrs;
+	u_short *usp;
+{
+	u_long l;
+
+	switch (xdrs->x_op) {
+
+	case XDR_ENCODE:
+		l = (u_long) *usp;
+		return (XDR_PUTLONG(xdrs, &l));
+
+	case XDR_DECODE:
+		if (!XDR_GETLONG(xdrs, &l)) {
+			return (FALSE);
+		}
+		*usp = (u_short) l;
+		return (TRUE);
+
+	case XDR_FREE:
+		return (TRUE);
+	}
+	return (FALSE);
+}
+
+
+/*
+ * XDR a char
+ */
+bool_t
+xdr_char(xdrs, cp)
+	XDR *xdrs;
+	char *cp;
+{
+	int i;
+
+	i = (*cp);
+	if (!xdr_int(xdrs, &i)) {
+		return (FALSE);
+	}
+	*cp = i;
+	return (TRUE);
+}
+
+/*
+ * XDR an unsigned char
+ */
+bool_t
+xdr_u_char(xdrs, cp)
+	XDR *xdrs;
+	char *cp;
+{
+	u_int u;
+
+	u = (*cp);
+	if (!xdr_u_int(xdrs, &u)) {
+		return (FALSE);
+	}
+	*cp = u;
+	return (TRUE);
+}
+
+/*
+ * XDR booleans
+ */
+bool_t
+xdr_bool(xdrs, bp)
+	register XDR *xdrs;
+	bool_t *bp;
+{
+	long lb;
+
+	switch (xdrs->x_op) {
+
+	case XDR_ENCODE:
+		lb = *bp ? XDR_TRUE : XDR_FALSE;
+		return (XDR_PUTLONG(xdrs, &lb));
+
+	case XDR_DECODE:
+		if (!XDR_GETLONG(xdrs, &lb)) {
+			return (FALSE);
+		}
+		*bp = (lb == XDR_FALSE) ? FALSE : TRUE;
+		return (TRUE);
+
+	case XDR_FREE:
+		return (TRUE);
+	}
+	return (FALSE);
+}
+
+/*
+ * XDR enumerations
+ */
+bool_t
+xdr_enum(xdrs, ep)
+	XDR *xdrs;
+	enum_t *ep;
+{
+#ifndef lint
+	enum sizecheck { SIZEVAL };	/* used to find the size of an enum */
+
+	/*
+	 * enums are treated as ints
+	 */
+	if (sizeof (enum sizecheck) == sizeof (long)) {
+		return (xdr_long(xdrs, (long *)ep));
+	} else if (sizeof (enum sizecheck) == sizeof (short)) {
+		return (xdr_short(xdrs, (short *)ep));
+	} else {
+		return (FALSE);
+	}
+#else
+	(void) (xdr_short(xdrs, (short *)ep));
+	return (xdr_long(xdrs, (long *)ep));
+#endif
+}
+
+/*
+ * XDR opaque data
+ * Allows the specification of a fixed size sequence of opaque bytes.
+ * cp points to the opaque object and cnt gives the byte length.
+ */
+bool_t
+xdr_opaque(xdrs, cp, cnt)
+	register XDR *xdrs;
+	caddr_t cp;
+	register u_int cnt;
+{
+	register u_int rndup;
+	static crud[BYTES_PER_XDR_UNIT];
+
+	/*
+	 * if no data we are done
+	 */
+	if (cnt == 0)
+		return (TRUE);
+
+	/*
+	 * round byte count to full xdr units
+	 */
+	rndup = cnt % BYTES_PER_XDR_UNIT;
+	if (rndup > 0)
+		rndup = BYTES_PER_XDR_UNIT - rndup;
+
+	if (xdrs->x_op == XDR_DECODE) {
+		if (!XDR_GETBYTES(xdrs, cp, cnt)) {
+			return (FALSE);
+		}
+		if (rndup == 0)
+			return (TRUE);
+		return (XDR_GETBYTES(xdrs, crud, rndup));
+	}
+
+	if (xdrs->x_op == XDR_ENCODE) {
+		if (!XDR_PUTBYTES(xdrs, cp, cnt)) {
+			return (FALSE);
+		}
+		if (rndup == 0)
+			return (TRUE);
+		return (XDR_PUTBYTES(xdrs, xdr_zero, rndup));
+	}
+
+	if (xdrs->x_op == XDR_FREE) {
+		return (TRUE);
+	}
+
+	return (FALSE);
+}
+
+/*
+ * XDR counted bytes
+ * *cpp is a pointer to the bytes, *sizep is the count.
+ * If *cpp is NULL maxsize bytes are allocated
+ */
+bool_t
+xdr_bytes(xdrs, cpp, sizep, maxsize)
+	register XDR *xdrs;
+	char **cpp;
+	register u_int *sizep;
+	u_int maxsize;
+{
+	register char *sp = *cpp;  /* sp is the actual string pointer */
+	register u_int nodesize;
+
+	/*
+	 * first deal with the length since xdr bytes are counted
+	 */
+	if (! xdr_u_int(xdrs, sizep)) {
+		return (FALSE);
+	}
+	nodesize = *sizep;
+	if ((nodesize > maxsize) && (xdrs->x_op != XDR_FREE)) {
+		return (FALSE);
+	}
+
+	/*
+	 * now deal with the actual bytes
+	 */
+	switch (xdrs->x_op) {
+
+	case XDR_DECODE:
+		if (nodesize == 0) {
+			return (TRUE);
+		}
+		if (sp == NULL) {
+			*cpp = sp = (char *)mem_alloc(nodesize);
+		}
+		if (sp == NULL) {
+			(void) fprintf(stderr, "xdr_bytes: out of memory\n");
+			return (FALSE);
+		}
+		/* fall into ... */
+
+	case XDR_ENCODE:
+		return (xdr_opaque(xdrs, sp, nodesize));
+
+	case XDR_FREE:
+		if (sp != NULL) {
+			mem_free(sp, nodesize);
+			*cpp = NULL;
+		}
+		return (TRUE);
+	}
+	return (FALSE);
+}
+
+/*
+ * Implemented here due to commonality of the object.
+ */
+bool_t
+xdr_netobj(xdrs, np)
+	XDR *xdrs;
+	struct netobj *np;
+{
+
+	return (xdr_bytes(xdrs, &np->n_bytes, &np->n_len, MAX_NETOBJ_SZ));
+}
+
+/*
+ * XDR a descriminated union
+ * Support routine for discriminated unions.
+ * You create an array of xdrdiscrim structures, terminated with
+ * an entry with a null procedure pointer.  The routine gets
+ * the discriminant value and then searches the array of xdrdiscrims
+ * looking for that value.  It calls the procedure given in the xdrdiscrim
+ * to handle the discriminant.  If there is no specific routine a default
+ * routine may be called.
+ * If there is no specific or default routine an error is returned.
+ */
+bool_t
+xdr_union(xdrs, dscmp, unp, choices, dfault)
+	register XDR *xdrs;
+	enum_t *dscmp;		/* enum to decide which arm to work on */
+	char *unp;		/* the union itself */
+	struct xdr_discrim *choices;	/* [value, xdr proc] for each arm */
+	xdrproc_t dfault;	/* default xdr routine */
+{
+	register enum_t dscm;
+
+	/*
+	 * we deal with the discriminator;  it's an enum
+	 */
+	if (! xdr_enum(xdrs, dscmp)) {
+		return (FALSE);
+	}
+	dscm = *dscmp;
+
+	/*
+	 * search choices for a value that matches the discriminator.
+	 * if we find one, execute the xdr routine for that value.
+	 */
+	for (; choices->proc != NULL_xdrproc_t; choices++) {
+		if (choices->value == dscm)
+			return ((*(choices->proc))(xdrs, unp, LASTUNSIGNED));
+	}
+
+	/*
+	 * no match - execute the default xdr routine if there is one
+	 */
+	return ((dfault == NULL_xdrproc_t) ? FALSE :
+	    (*dfault)(xdrs, unp, LASTUNSIGNED));
+}
+
+
+/*
+ * Non-portable xdr primitives.
+ * Care should be taken when moving these routines to new architectures.
+ */
+
+
+/*
+ * XDR null terminated ASCII strings
+ * xdr_string deals with "C strings" - arrays of bytes that are
+ * terminated by a NULL character.  The parameter cpp references a
+ * pointer to storage; If the pointer is null, then the necessary
+ * storage is allocated.  The last parameter is the max allowed length
+ * of the string as specified by a protocol.
+ */
+bool_t
+xdr_string(xdrs, cpp, maxsize)
+	register XDR *xdrs;
+	char **cpp;
+	u_int maxsize;
+{
+	register char *sp = *cpp;  /* sp is the actual string pointer */
+	u_int size;
+	u_int nodesize;
+
+	/*
+	 * first deal with the length since xdr strings are counted-strings
+	 */
+	switch (xdrs->x_op) {
+	case XDR_FREE:
+		if (sp == NULL) {
+			return(TRUE);	/* already free */
+		}
+		/* fall through... */
+	case XDR_ENCODE:
+		size = strlen(sp);
+		break;
+	}
+	if (! xdr_u_int(xdrs, &size)) {
+		return (FALSE);
+	}
+	if (size > maxsize) {
+		return (FALSE);
+	}
+	nodesize = size + 1;
+
+	/*
+	 * now deal with the actual bytes
+	 */
+	switch (xdrs->x_op) {
+
+	case XDR_DECODE:
+		if (nodesize == 0) {
+			return (TRUE);
+		}
+		if (sp == NULL)
+			*cpp = sp = (char *)mem_alloc(nodesize);
+		if (sp == NULL) {
+			(void) fprintf(stderr, "xdr_string: out of memory\n");
+			return (FALSE);
+		}
+		sp[size] = 0;
+		/* fall into ... */
+
+	case XDR_ENCODE:
+		return (xdr_opaque(xdrs, sp, size));
+
+	case XDR_FREE:
+		mem_free(sp, nodesize);
+		*cpp = NULL;
+		return (TRUE);
+	}
+	return (FALSE);
+}
+
+/*
+ * Wrapper for xdr_string that can be called directly from
+ * routines like clnt_call
+ */
+bool_t
+xdr_wrapstring(xdrs, cpp)
+	XDR *xdrs;
+	char **cpp;
+{
+	if (xdr_string(xdrs, cpp, LASTUNSIGNED)) {
+		return (TRUE);
+	}
+	return (FALSE);
+}
diff --git a/lib/libc/xdr/xdr_array.c b/lib/libc/xdr/xdr_array.c
new file mode 100644
index 0000000..35bbb2b
--- /dev/null
+++ b/lib/libc/xdr/xdr_array.c
@@ -0,0 +1,156 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)xdr_array.c 1.10 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)xdr_array.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: xdr_array.c,v 1.2 1995/05/30 05:42:04 rgrimes Exp $";
+#endif
+
+/*
+ * xdr_array.c, Generic XDR routines impelmentation.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ *
+ * These are the "non-trivial" xdr primitives used to serialize and de-serialize
+ * arrays.  See xdr.h for more info on the interface to xdr.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <rpc/types.h>
+#include <rpc/xdr.h>
+
+#define LASTUNSIGNED	((u_int)0-1)
+
+
+/*
+ * XDR an array of arbitrary elements
+ * *addrp is a pointer to the array, *sizep is the number of elements.
+ * If addrp is NULL (*sizep * elsize) bytes are allocated.
+ * elsize is the size (in bytes) of each element, and elproc is the
+ * xdr procedure to call to handle each element of the array.
+ */
+bool_t
+xdr_array(xdrs, addrp, sizep, maxsize, elsize, elproc)
+	register XDR *xdrs;
+	caddr_t *addrp;		/* array pointer */
+	u_int *sizep;		/* number of elements */
+	u_int maxsize;		/* max numberof elements */
+	u_int elsize;		/* size in bytes of each element */
+	xdrproc_t elproc;	/* xdr routine to handle each element */
+{
+	register u_int i;
+	register caddr_t target = *addrp;
+	register u_int c;  /* the actual element count */
+	register bool_t stat = TRUE;
+	register u_int nodesize;
+
+	/* like strings, arrays are really counted arrays */
+	if (! xdr_u_int(xdrs, sizep)) {
+		return (FALSE);
+	}
+	c = *sizep;
+	if ((c > maxsize) && (xdrs->x_op != XDR_FREE)) {
+		return (FALSE);
+	}
+	nodesize = c * elsize;
+
+	/*
+	 * if we are deserializing, we may need to allocate an array.
+	 * We also save time by checking for a null array if we are freeing.
+	 */
+	if (target == NULL)
+		switch (xdrs->x_op) {
+		case XDR_DECODE:
+			if (c == 0)
+				return (TRUE);
+			*addrp = target = mem_alloc(nodesize);
+			if (target == NULL) {
+				(void) fprintf(stderr,
+					"xdr_array: out of memory\n");
+				return (FALSE);
+			}
+			bzero(target, nodesize);
+			break;
+
+		case XDR_FREE:
+			return (TRUE);
+	}
+
+	/*
+	 * now we xdr each element of array
+	 */
+	for (i = 0; (i < c) && stat; i++) {
+		stat = (*elproc)(xdrs, target, LASTUNSIGNED);
+		target += elsize;
+	}
+
+	/*
+	 * the array may need freeing
+	 */
+	if (xdrs->x_op == XDR_FREE) {
+		mem_free(*addrp, nodesize);
+		*addrp = NULL;
+	}
+	return (stat);
+}
+
+/*
+ * xdr_vector():
+ *
+ * XDR a fixed length array. Unlike variable-length arrays,
+ * the storage of fixed length arrays is static and unfreeable.
+ * > basep: base of the array
+ * > size: size of the array
+ * > elemsize: size of each element
+ * > xdr_elem: routine to XDR each element
+ */
+bool_t
+xdr_vector(xdrs, basep, nelem, elemsize, xdr_elem)
+	register XDR *xdrs;
+	register char *basep;
+	register u_int nelem;
+	register u_int elemsize;
+	register xdrproc_t xdr_elem;
+{
+	register u_int i;
+	register char *elptr;
+
+	elptr = basep;
+	for (i = 0; i < nelem; i++) {
+		if (! (*xdr_elem)(xdrs, elptr, LASTUNSIGNED)) {
+			return(FALSE);
+		}
+		elptr += elemsize;
+	}
+	return(TRUE);
+}
+
diff --git a/lib/libc/xdr/xdr_float.c b/lib/libc/xdr/xdr_float.c
new file mode 100644
index 0000000..105ca43
--- /dev/null
+++ b/lib/libc/xdr/xdr_float.c
@@ -0,0 +1,283 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)xdr_float.c 1.12 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)xdr_float.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: xdr_float.c,v 1.1 1994/08/07 18:39:32 wollman Exp $";
+#endif
+
+/*
+ * xdr_float.c, Generic XDR routines impelmentation.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ *
+ * These are the "floating point" xdr routines used to (de)serialize
+ * most common data items.  See xdr.h for more info on the interface to
+ * xdr.
+ */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/param.h>
+#include <rpc/types.h>
+#include <rpc/xdr.h>
+
+/*
+ * NB: Not portable.
+ * This routine works on Suns (Sky / 68000's), i386's, MIPS, NS32k and Vaxen.
+ */
+
+#if defined(mc68000)||defined(sparc)||defined(i386)||defined(mips)||defined(ns32000)
+#define IEEEFP
+#endif
+
+#ifdef vax
+
+/* What IEEE single precision floating point looks like on a Vax */
+struct	ieee_single {
+	unsigned int	mantissa: 23;
+	unsigned int	exp     : 8;
+	unsigned int	sign    : 1;
+};
+
+/* Vax single precision floating point */
+struct	vax_single {
+	unsigned int	mantissa1 : 7;
+	unsigned int	exp       : 8;
+	unsigned int	sign      : 1;
+	unsigned int	mantissa2 : 16;
+};
+
+#define VAX_SNG_BIAS	0x81
+#define IEEE_SNG_BIAS	0x7f
+
+static struct sgl_limits {
+	struct vax_single s;
+	struct ieee_single ieee;
+} sgl_limits[2] = {
+	{{ 0x7f, 0xff, 0x0, 0xffff },	/* Max Vax */
+	{ 0x0, 0xff, 0x0 }},		/* Max IEEE */
+	{{ 0x0, 0x0, 0x0, 0x0 },	/* Min Vax */
+	{ 0x0, 0x0, 0x0 }}		/* Min IEEE */
+};
+#endif /* vax */
+
+bool_t
+xdr_float(xdrs, fp)
+	register XDR *xdrs;
+	register float *fp;
+{
+#ifndef IEEEFP
+	struct ieee_single is;
+	struct vax_single vs, *vsp;
+	struct sgl_limits *lim;
+	int i;
+#endif
+	switch (xdrs->x_op) {
+
+	case XDR_ENCODE:
+#ifdef IEEEFP
+		return (XDR_PUTLONG(xdrs, (long *)fp));
+#else
+		vs = *((struct vax_single *)fp);
+		for (i = 0, lim = sgl_limits;
+			i < sizeof(sgl_limits)/sizeof(struct sgl_limits);
+			i++, lim++) {
+			if ((vs.mantissa2 == lim->s.mantissa2) &&
+				(vs.exp == lim->s.exp) &&
+				(vs.mantissa1 == lim->s.mantissa1)) {
+				is = lim->ieee;
+				goto shipit;
+			}
+		}
+		is.exp = vs.exp - VAX_SNG_BIAS + IEEE_SNG_BIAS;
+		is.mantissa = (vs.mantissa1 << 16) | vs.mantissa2;
+	shipit:
+		is.sign = vs.sign;
+		return (XDR_PUTLONG(xdrs, (long *)&is));
+#endif
+
+	case XDR_DECODE:
+#ifdef IEEEFP
+		return (XDR_GETLONG(xdrs, (long *)fp));
+#else
+		vsp = (struct vax_single *)fp;
+		if (!XDR_GETLONG(xdrs, (long *)&is))
+			return (FALSE);
+		for (i = 0, lim = sgl_limits;
+			i < sizeof(sgl_limits)/sizeof(struct sgl_limits);
+			i++, lim++) {
+			if ((is.exp == lim->ieee.exp) &&
+				(is.mantissa == lim->ieee.mantissa)) {
+				*vsp = lim->s;
+				goto doneit;
+			}
+		}
+		vsp->exp = is.exp - IEEE_SNG_BIAS + VAX_SNG_BIAS;
+		vsp->mantissa2 = is.mantissa;
+		vsp->mantissa1 = (is.mantissa >> 16);
+	doneit:
+		vsp->sign = is.sign;
+		return (TRUE);
+#endif
+
+	case XDR_FREE:
+		return (TRUE);
+	}
+	return (FALSE);
+}
+
+/*
+ * This routine works on Suns (Sky / 68000's), i386's, MIPS and Vaxen.
+ */
+
+#ifdef vax
+/* What IEEE double precision floating point looks like on a Vax */
+struct	ieee_double {
+	unsigned int	mantissa1 : 20;
+	unsigned int	exp       : 11;
+	unsigned int	sign      : 1;
+	unsigned int	mantissa2 : 32;
+};
+
+/* Vax double precision floating point */
+struct  vax_double {
+	unsigned int	mantissa1 : 7;
+	unsigned int	exp       : 8;
+	unsigned int	sign      : 1;
+	unsigned int	mantissa2 : 16;
+	unsigned int	mantissa3 : 16;
+	unsigned int	mantissa4 : 16;
+};
+
+#define VAX_DBL_BIAS	0x81
+#define IEEE_DBL_BIAS	0x3ff
+#define MASK(nbits)	((1 << nbits) - 1)
+
+static struct dbl_limits {
+	struct	vax_double d;
+	struct	ieee_double ieee;
+} dbl_limits[2] = {
+	{{ 0x7f, 0xff, 0x0, 0xffff, 0xffff, 0xffff },	/* Max Vax */
+	{ 0x0, 0x7ff, 0x0, 0x0 }},			/* Max IEEE */
+	{{ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0},		/* Min Vax */
+	{ 0x0, 0x0, 0x0, 0x0 }}				/* Min IEEE */
+};
+
+#endif /* vax */
+
+
+bool_t
+xdr_double(xdrs, dp)
+	register XDR *xdrs;
+	double *dp;
+{
+	register long *lp;
+#ifndef IEEEFP
+	struct	ieee_double id;
+	struct	vax_double vd;
+	register struct dbl_limits *lim;
+	int i;
+#endif
+
+	switch (xdrs->x_op) {
+
+	case XDR_ENCODE:
+#ifdef IEEEFP
+		lp = (long *)dp;
+#if BYTE_ORDER == BIG_ENDIAN
+		return (XDR_PUTLONG(xdrs, lp++) && XDR_PUTLONG(xdrs, lp));
+#else
+		return (XDR_PUTLONG(xdrs, lp+1) && XDR_PUTLONG(xdrs, lp));
+#endif
+#else
+		vd = *((struct vax_double *)dp);
+		for (i = 0, lim = dbl_limits;
+			i < sizeof(dbl_limits)/sizeof(struct dbl_limits);
+			i++, lim++) {
+			if ((vd.mantissa4 == lim->d.mantissa4) &&
+				(vd.mantissa3 == lim->d.mantissa3) &&
+				(vd.mantissa2 == lim->d.mantissa2) &&
+				(vd.mantissa1 == lim->d.mantissa1) &&
+				(vd.exp == lim->d.exp)) {
+				id = lim->ieee;
+				goto shipit;
+			}
+		}
+		id.exp = vd.exp - VAX_DBL_BIAS + IEEE_DBL_BIAS;
+		id.mantissa1 = (vd.mantissa1 << 13) | (vd.mantissa2 >> 3);
+		id.mantissa2 = ((vd.mantissa2 & MASK(3)) << 29) |
+				(vd.mantissa3 << 13) |
+				((vd.mantissa4 >> 3) & MASK(13));
+	shipit:
+		id.sign = vd.sign;
+		lp = (long *)&id;
+		return (XDR_PUTLONG(xdrs, lp++) && XDR_PUTLONG(xdrs, lp));
+#endif
+
+	case XDR_DECODE:
+#ifdef IEEEFP
+		lp = (long *)dp;
+#if BYTE_ORDER == BIG_ENDIAN
+		return (XDR_GETLONG(xdrs, lp++) && XDR_GETLONG(xdrs, lp));
+#else
+		return (XDR_GETLONG(xdrs, lp+1) && XDR_GETLONG(xdrs, lp));
+#endif
+#else
+		lp = (long *)&id;
+		if (!XDR_GETLONG(xdrs, lp++) || !XDR_GETLONG(xdrs, lp))
+			return (FALSE);
+		for (i = 0, lim = dbl_limits;
+			i < sizeof(dbl_limits)/sizeof(struct dbl_limits);
+			i++, lim++) {
+			if ((id.mantissa2 == lim->ieee.mantissa2) &&
+				(id.mantissa1 == lim->ieee.mantissa1) &&
+				(id.exp == lim->ieee.exp)) {
+				vd = lim->d;
+				goto doneit;
+			}
+		}
+		vd.exp = id.exp - IEEE_DBL_BIAS + VAX_DBL_BIAS;
+		vd.mantissa1 = (id.mantissa1 >> 13);
+		vd.mantissa2 = ((id.mantissa1 & MASK(13)) << 3) |
+				(id.mantissa2 >> 29);
+		vd.mantissa3 = (id.mantissa2 >> 13);
+		vd.mantissa4 = (id.mantissa2 << 3);
+	doneit:
+		vd.sign = id.sign;
+		*dp = *((double *)&vd);
+		return (TRUE);
+#endif
+
+	case XDR_FREE:
+		return (TRUE);
+	}
+	return (FALSE);
+}
diff --git a/lib/libc/xdr/xdr_mem.c b/lib/libc/xdr/xdr_mem.c
new file mode 100644
index 0000000..6f82f67
--- /dev/null
+++ b/lib/libc/xdr/xdr_mem.c
@@ -0,0 +1,186 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)xdr_mem.c 1.19 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)xdr_mem.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: xdr_mem.c,v 1.2 1995/05/30 05:42:06 rgrimes Exp $";
+#endif
+
+/*
+ * xdr_mem.h, XDR implementation using memory buffers.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ *
+ * If you have some data to be interpreted as external data representation
+ * or to be converted to external data representation in a memory buffer,
+ * then this is the package for you.
+ *
+ */
+
+#include <string.h>
+#include <rpc/types.h>
+#include <rpc/xdr.h>
+#include <netinet/in.h>
+
+static bool_t	xdrmem_getlong();
+static bool_t	xdrmem_putlong();
+static bool_t	xdrmem_getbytes();
+static bool_t	xdrmem_putbytes();
+static u_int	xdrmem_getpos();
+static bool_t	xdrmem_setpos();
+static long *	xdrmem_inline();
+static void	xdrmem_destroy();
+
+static struct	xdr_ops xdrmem_ops = {
+	xdrmem_getlong,
+	xdrmem_putlong,
+	xdrmem_getbytes,
+	xdrmem_putbytes,
+	xdrmem_getpos,
+	xdrmem_setpos,
+	xdrmem_inline,
+	xdrmem_destroy
+};
+
+/*
+ * The procedure xdrmem_create initializes a stream descriptor for a
+ * memory buffer.
+ */
+void
+xdrmem_create(xdrs, addr, size, op)
+	register XDR *xdrs;
+	caddr_t addr;
+	u_int size;
+	enum xdr_op op;
+{
+
+	xdrs->x_op = op;
+	xdrs->x_ops = &xdrmem_ops;
+	xdrs->x_private = xdrs->x_base = addr;
+	xdrs->x_handy = size;
+}
+
+static void
+xdrmem_destroy(/*xdrs*/)
+	/*XDR *xdrs;*/
+{
+}
+
+static bool_t
+xdrmem_getlong(xdrs, lp)
+	register XDR *xdrs;
+	long *lp;
+{
+
+	if ((xdrs->x_handy -= sizeof(long)) < 0)
+		return (FALSE);
+	*lp = (long)ntohl((u_long)(*((long *)(xdrs->x_private))));
+	xdrs->x_private += sizeof(long);
+	return (TRUE);
+}
+
+static bool_t
+xdrmem_putlong(xdrs, lp)
+	register XDR *xdrs;
+	long *lp;
+{
+
+	if ((xdrs->x_handy -= sizeof(long)) < 0)
+		return (FALSE);
+	*(long *)xdrs->x_private = (long)htonl((u_long)(*lp));
+	xdrs->x_private += sizeof(long);
+	return (TRUE);
+}
+
+static bool_t
+xdrmem_getbytes(xdrs, addr, len)
+	register XDR *xdrs;
+	caddr_t addr;
+	register u_int len;
+{
+
+	if ((xdrs->x_handy -= len) < 0)
+		return (FALSE);
+	bcopy(xdrs->x_private, addr, len);
+	xdrs->x_private += len;
+	return (TRUE);
+}
+
+static bool_t
+xdrmem_putbytes(xdrs, addr, len)
+	register XDR *xdrs;
+	caddr_t addr;
+	register u_int len;
+{
+
+	if ((xdrs->x_handy -= len) < 0)
+		return (FALSE);
+	bcopy(addr, xdrs->x_private, len);
+	xdrs->x_private += len;
+	return (TRUE);
+}
+
+static u_int
+xdrmem_getpos(xdrs)
+	register XDR *xdrs;
+{
+
+	return ((u_int)xdrs->x_private - (u_int)xdrs->x_base);
+}
+
+static bool_t
+xdrmem_setpos(xdrs, pos)
+	register XDR *xdrs;
+	u_int pos;
+{
+	register caddr_t newaddr = xdrs->x_base + pos;
+	register caddr_t lastaddr = xdrs->x_private + xdrs->x_handy;
+
+	if ((long)newaddr > (long)lastaddr)
+		return (FALSE);
+	xdrs->x_private = newaddr;
+	xdrs->x_handy = (int)lastaddr - (int)newaddr;
+	return (TRUE);
+}
+
+static long *
+xdrmem_inline(xdrs, len)
+	register XDR *xdrs;
+	int len;
+{
+	long *buf = 0;
+
+	if (xdrs->x_handy >= len) {
+		xdrs->x_handy -= len;
+		buf = (long *) xdrs->x_private;
+		xdrs->x_private += len;
+	}
+	return (buf);
+}
diff --git a/lib/libc/xdr/xdr_rec.c b/lib/libc/xdr/xdr_rec.c
new file mode 100644
index 0000000..3b69f25
--- /dev/null
+++ b/lib/libc/xdr/xdr_rec.c
@@ -0,0 +1,585 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)xdr_rec.c 1.21 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)xdr_rec.c	2.2 88/08/01 4.0 RPCSRC";*/
+static char *rcsid = "$Id: xdr_rec.c,v 1.3 1995/05/30 05:42:09 rgrimes Exp $";
+#endif
+
+/*
+ * xdr_rec.c, Implements TCP/IP based XDR streams with a "record marking"
+ * layer above tcp (for rpc's use).
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ *
+ * These routines interface XDRSTREAMS to a tcp/ip connection.
+ * There is a record marking layer between the xdr stream
+ * and the tcp transport level.  A record is composed on one or more
+ * record fragments.  A record fragment is a thirty-two bit header followed
+ * by n bytes of data, where n is contained in the header.  The header
+ * is represented as a htonl(u_long).  Thegh order bit encodes
+ * whether or not the fragment is the last fragment of the record
+ * (1 => fragment is last, 0 => more fragments to follow.
+ * The other 31 bits encode the byte length of the fragment.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <rpc/types.h>
+#include <rpc/xdr.h>
+#include <netinet/in.h>
+
+static u_int	fix_buf_size();
+static bool_t	flush_out();
+static bool_t	get_input_bytes();
+static bool_t	set_input_fragment();
+static bool_t	skip_input_bytes();
+
+static bool_t	xdrrec_getlong();
+static bool_t	xdrrec_putlong();
+static bool_t	xdrrec_getbytes();
+static bool_t	xdrrec_putbytes();
+static u_int	xdrrec_getpos();
+static bool_t	xdrrec_setpos();
+static long *	xdrrec_inline();
+static void	xdrrec_destroy();
+
+static struct  xdr_ops xdrrec_ops = {
+	xdrrec_getlong,
+	xdrrec_putlong,
+	xdrrec_getbytes,
+	xdrrec_putbytes,
+	xdrrec_getpos,
+	xdrrec_setpos,
+	xdrrec_inline,
+	xdrrec_destroy
+};
+
+/*
+ * A record is composed of one or more record fragments.
+ * A record fragment is a two-byte header followed by zero to
+ * 2**32-1 bytes.  The header is treated as a long unsigned and is
+ * encode/decoded to the network via htonl/ntohl.  The low order 31 bits
+ * are a byte count of the fragment.  The highest order bit is a boolean:
+ * 1 => this fragment is the last fragment of the record,
+ * 0 => this fragment is followed by more fragment(s).
+ *
+ * The fragment/record machinery is not general;  it is constructed to
+ * meet the needs of xdr and rpc based on tcp.
+ */
+
+#define LAST_FRAG ((u_long)(1 << 31))
+
+typedef struct rec_strm {
+	caddr_t tcp_handle;
+	caddr_t the_buffer;
+	/*
+	 * out-goung bits
+	 */
+	int (*writeit)();
+	caddr_t out_base;	/* output buffer (points to frag header) */
+	caddr_t out_finger;	/* next output position */
+	caddr_t out_boundry;	/* data cannot up to this address */
+	u_long *frag_header;	/* beginning of curren fragment */
+	bool_t frag_sent;	/* true if buffer sent in middle of record */
+	/*
+	 * in-coming bits
+	 */
+	int (*readit)();
+	u_long in_size;	/* fixed size of the input buffer */
+	caddr_t in_base;
+	caddr_t in_finger;	/* location of next byte to be had */
+	caddr_t in_boundry;	/* can read up to this location */
+	long fbtbc;		/* fragment bytes to be consumed */
+	bool_t last_frag;
+	u_int sendsize;
+	u_int recvsize;
+} RECSTREAM;
+
+
+/*
+ * Create an xdr handle for xdrrec
+ * xdrrec_create fills in xdrs.  Sendsize and recvsize are
+ * send and recv buffer sizes (0 => use default).
+ * tcp_handle is an opaque handle that is passed as the first parameter to
+ * the procedures readit and writeit.  Readit and writeit are read and
+ * write respectively.   They are like the system
+ * calls expect that they take an opaque handle rather than an fd.
+ */
+void
+xdrrec_create(xdrs, sendsize, recvsize, tcp_handle, readit, writeit)
+	register XDR *xdrs;
+	register u_int sendsize;
+	register u_int recvsize;
+	caddr_t tcp_handle;
+	int (*readit)();  /* like read, but pass it a tcp_handle, not sock */
+	int (*writeit)();  /* like write, but pass it a tcp_handle, not sock */
+{
+	register RECSTREAM *rstrm =
+		(RECSTREAM *)mem_alloc(sizeof(RECSTREAM));
+
+	if (rstrm == NULL) {
+		(void)fprintf(stderr, "xdrrec_create: out of memory\n");
+		/*
+		 *  This is bad.  Should rework xdrrec_create to
+		 *  return a handle, and in this case return NULL
+		 */
+		return;
+	}
+	/*
+	 * adjust sizes and allocate buffer quad byte aligned
+	 */
+	rstrm->sendsize = sendsize = fix_buf_size(sendsize);
+	rstrm->recvsize = recvsize = fix_buf_size(recvsize);
+	rstrm->the_buffer = mem_alloc(sendsize + recvsize + BYTES_PER_XDR_UNIT);
+	if (rstrm->the_buffer == NULL) {
+		(void)fprintf(stderr, "xdrrec_create: out of memory\n");
+		return;
+	}
+	for (rstrm->out_base = rstrm->the_buffer;
+		(u_int)rstrm->out_base % BYTES_PER_XDR_UNIT != 0;
+		rstrm->out_base++);
+	rstrm->in_base = rstrm->out_base + sendsize;
+	/*
+	 * now the rest ...
+	 */
+	xdrs->x_ops = &xdrrec_ops;
+	xdrs->x_private = (caddr_t)rstrm;
+	rstrm->tcp_handle = tcp_handle;
+	rstrm->readit = readit;
+	rstrm->writeit = writeit;
+	rstrm->out_finger = rstrm->out_boundry = rstrm->out_base;
+	rstrm->frag_header = (u_long *)rstrm->out_base;
+	rstrm->out_finger += sizeof(u_long);
+	rstrm->out_boundry += sendsize;
+	rstrm->frag_sent = FALSE;
+	rstrm->in_size = recvsize;
+	rstrm->in_boundry = rstrm->in_base;
+	rstrm->in_finger = (rstrm->in_boundry += recvsize);
+	rstrm->fbtbc = 0;
+	rstrm->last_frag = TRUE;
+}
+
+
+/*
+ * The reoutines defined below are the xdr ops which will go into the
+ * xdr handle filled in by xdrrec_create.
+ */
+
+static bool_t
+xdrrec_getlong(xdrs, lp)
+	XDR *xdrs;
+	long *lp;
+{
+	register RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
+	register long *buflp = (long *)(rstrm->in_finger);
+	long mylong;
+
+	/* first try the inline, fast case */
+	if ((rstrm->fbtbc >= sizeof(long)) &&
+		(((int)rstrm->in_boundry - (int)buflp) >= sizeof(long))) {
+		*lp = (long)ntohl((u_long)(*buflp));
+		rstrm->fbtbc -= sizeof(long);
+		rstrm->in_finger += sizeof(long);
+	} else {
+		if (! xdrrec_getbytes(xdrs, (caddr_t)&mylong, sizeof(long)))
+			return (FALSE);
+		*lp = (long)ntohl((u_long)mylong);
+	}
+	return (TRUE);
+}
+
+static bool_t
+xdrrec_putlong(xdrs, lp)
+	XDR *xdrs;
+	long *lp;
+{
+	register RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
+	register long *dest_lp = ((long *)(rstrm->out_finger));
+
+	if ((rstrm->out_finger += sizeof(long)) > rstrm->out_boundry) {
+		/*
+		 * this case should almost never happen so the code is
+		 * inefficient
+		 */
+		rstrm->out_finger -= sizeof(long);
+		rstrm->frag_sent = TRUE;
+		if (! flush_out(rstrm, FALSE))
+			return (FALSE);
+		dest_lp = ((long *)(rstrm->out_finger));
+		rstrm->out_finger += sizeof(long);
+	}
+	*dest_lp = (long)htonl((u_long)(*lp));
+	return (TRUE);
+}
+
+static bool_t  /* must manage buffers, fragments, and records */
+xdrrec_getbytes(xdrs, addr, len)
+	XDR *xdrs;
+	register caddr_t addr;
+	register u_int len;
+{
+	register RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
+	register int current;
+
+	while (len > 0) {
+		current = rstrm->fbtbc;
+		if (current == 0) {
+			if (rstrm->last_frag)
+				return (FALSE);
+			if (! set_input_fragment(rstrm))
+				return (FALSE);
+			continue;
+		}
+		current = (len < current) ? len : current;
+		if (! get_input_bytes(rstrm, addr, current))
+			return (FALSE);
+		addr += current;
+		rstrm->fbtbc -= current;
+		len -= current;
+	}
+	return (TRUE);
+}
+
+static bool_t
+xdrrec_putbytes(xdrs, addr, len)
+	XDR *xdrs;
+	register caddr_t addr;
+	register u_int len;
+{
+	register RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
+	register int current;
+
+	while (len > 0) {
+		current = (u_int)rstrm->out_boundry - (u_int)rstrm->out_finger;
+		current = (len < current) ? len : current;
+		bcopy(addr, rstrm->out_finger, current);
+		rstrm->out_finger += current;
+		addr += current;
+		len -= current;
+		if (rstrm->out_finger == rstrm->out_boundry) {
+			rstrm->frag_sent = TRUE;
+			if (! flush_out(rstrm, FALSE))
+				return (FALSE);
+		}
+	}
+	return (TRUE);
+}
+
+static u_int
+xdrrec_getpos(xdrs)
+	register XDR *xdrs;
+{
+	register RECSTREAM *rstrm = (RECSTREAM *)xdrs->x_private;
+	register long pos;
+
+	pos = lseek((int)rstrm->tcp_handle, (long) 0, 1);
+	if (pos != -1)
+		switch (xdrs->x_op) {
+
+		case XDR_ENCODE:
+			pos += rstrm->out_finger - rstrm->out_base;
+			break;
+
+		case XDR_DECODE:
+			pos -= rstrm->in_boundry - rstrm->in_finger;
+			break;
+
+		default:
+			pos = (u_int) -1;
+			break;
+		}
+	return ((u_int) pos);
+}
+
+static bool_t
+xdrrec_setpos(xdrs, pos)
+	register XDR *xdrs;
+	u_int pos;
+{
+	register RECSTREAM *rstrm = (RECSTREAM *)xdrs->x_private;
+	u_int currpos = xdrrec_getpos(xdrs);
+	int delta = currpos - pos;
+	caddr_t newpos;
+
+	if ((int)currpos != -1)
+		switch (xdrs->x_op) {
+
+		case XDR_ENCODE:
+			newpos = rstrm->out_finger - delta;
+			if ((newpos > (caddr_t)(rstrm->frag_header)) &&
+				(newpos < rstrm->out_boundry)) {
+				rstrm->out_finger = newpos;
+				return (TRUE);
+			}
+			break;
+
+		case XDR_DECODE:
+			newpos = rstrm->in_finger - delta;
+			if ((delta < (int)(rstrm->fbtbc)) &&
+				(newpos <= rstrm->in_boundry) &&
+				(newpos >= rstrm->in_base)) {
+				rstrm->in_finger = newpos;
+				rstrm->fbtbc -= delta;
+				return (TRUE);
+			}
+			break;
+		}
+	return (FALSE);
+}
+
+static long *
+xdrrec_inline(xdrs, len)
+	register XDR *xdrs;
+	int len;
+{
+	register RECSTREAM *rstrm = (RECSTREAM *)xdrs->x_private;
+	long * buf = NULL;
+
+	switch (xdrs->x_op) {
+
+	case XDR_ENCODE:
+		if ((rstrm->out_finger + len) <= rstrm->out_boundry) {
+			buf = (long *) rstrm->out_finger;
+			rstrm->out_finger += len;
+		}
+		break;
+
+	case XDR_DECODE:
+		if ((len <= rstrm->fbtbc) &&
+			((rstrm->in_finger + len) <= rstrm->in_boundry)) {
+			buf = (long *) rstrm->in_finger;
+			rstrm->fbtbc -= len;
+			rstrm->in_finger += len;
+		}
+		break;
+	}
+	return (buf);
+}
+
+static void
+xdrrec_destroy(xdrs)
+	register XDR *xdrs;
+{
+	register RECSTREAM *rstrm = (RECSTREAM *)xdrs->x_private;
+
+	mem_free(rstrm->the_buffer,
+		rstrm->sendsize + rstrm->recvsize + BYTES_PER_XDR_UNIT);
+	mem_free((caddr_t)rstrm, sizeof(RECSTREAM));
+}
+
+
+/*
+ * Exported routines to manage xdr records
+ */
+
+/*
+ * Before reading (deserializing from the stream, one should always call
+ * this procedure to guarantee proper record alignment.
+ */
+bool_t
+xdrrec_skiprecord(xdrs)
+	XDR *xdrs;
+{
+	register RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
+
+	while (rstrm->fbtbc > 0 || (! rstrm->last_frag)) {
+		if (! skip_input_bytes(rstrm, rstrm->fbtbc))
+			return (FALSE);
+		rstrm->fbtbc = 0;
+		if ((! rstrm->last_frag) && (! set_input_fragment(rstrm)))
+			return (FALSE);
+	}
+	rstrm->last_frag = FALSE;
+	return (TRUE);
+}
+
+/*
+ * Look ahead fuction.
+ * Returns TRUE iff there is no more input in the buffer
+ * after consuming the rest of the current record.
+ */
+bool_t
+xdrrec_eof(xdrs)
+	XDR *xdrs;
+{
+	register RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
+
+	while (rstrm->fbtbc > 0 || (! rstrm->last_frag)) {
+		if (! skip_input_bytes(rstrm, rstrm->fbtbc))
+			return (TRUE);
+		rstrm->fbtbc = 0;
+		if ((! rstrm->last_frag) && (! set_input_fragment(rstrm)))
+			return (TRUE);
+	}
+	if (rstrm->in_finger == rstrm->in_boundry)
+		return (TRUE);
+	return (FALSE);
+}
+
+/*
+ * The client must tell the package when an end-of-record has occurred.
+ * The second paraemters tells whether the record should be flushed to the
+ * (output) tcp stream.  (This let's the package support batched or
+ * pipelined procedure calls.)  TRUE => immmediate flush to tcp connection.
+ */
+bool_t
+xdrrec_endofrecord(xdrs, sendnow)
+	XDR *xdrs;
+	bool_t sendnow;
+{
+	register RECSTREAM *rstrm = (RECSTREAM *)(xdrs->x_private);
+	register u_long len;  /* fragment length */
+
+	if (sendnow || rstrm->frag_sent ||
+		((u_long)rstrm->out_finger + sizeof(u_long) >=
+		(u_long)rstrm->out_boundry)) {
+		rstrm->frag_sent = FALSE;
+		return (flush_out(rstrm, TRUE));
+	}
+	len = (u_long)(rstrm->out_finger) - (u_long)(rstrm->frag_header) -
+	   sizeof(u_long);
+	*(rstrm->frag_header) = htonl((u_long)len | LAST_FRAG);
+	rstrm->frag_header = (u_long *)rstrm->out_finger;
+	rstrm->out_finger += sizeof(u_long);
+	return (TRUE);
+}
+
+
+/*
+ * Internal useful routines
+ */
+static bool_t
+flush_out(rstrm, eor)
+	register RECSTREAM *rstrm;
+	bool_t eor;
+{
+	register u_long eormask = (eor == TRUE) ? LAST_FRAG : 0;
+	register u_long len = (u_long)(rstrm->out_finger) -
+		(u_long)(rstrm->frag_header) - sizeof(u_long);
+
+	*(rstrm->frag_header) = htonl(len | eormask);
+	len = (u_long)(rstrm->out_finger) - (u_long)(rstrm->out_base);
+	if ((*(rstrm->writeit))(rstrm->tcp_handle, rstrm->out_base, (int)len)
+		!= (int)len)
+		return (FALSE);
+	rstrm->frag_header = (u_long *)rstrm->out_base;
+	rstrm->out_finger = (caddr_t)rstrm->out_base + sizeof(u_long);
+	return (TRUE);
+}
+
+static bool_t  /* knows nothing about records!  Only about input buffers */
+fill_input_buf(rstrm)
+	register RECSTREAM *rstrm;
+{
+	register caddr_t where;
+	u_int i;
+	register int len;
+
+	where = rstrm->in_base;
+	i = (u_int)rstrm->in_boundry % BYTES_PER_XDR_UNIT;
+	where += i;
+	len = rstrm->in_size - i;
+	if ((len = (*(rstrm->readit))(rstrm->tcp_handle, where, len)) == -1)
+		return (FALSE);
+	rstrm->in_finger = where;
+	where += len;
+	rstrm->in_boundry = where;
+	return (TRUE);
+}
+
+static bool_t  /* knows nothing about records!  Only about input buffers */
+get_input_bytes(rstrm, addr, len)
+	register RECSTREAM *rstrm;
+	register caddr_t addr;
+	register int len;
+{
+	register int current;
+
+	while (len > 0) {
+		current = (int)rstrm->in_boundry - (int)rstrm->in_finger;
+		if (current == 0) {
+			if (! fill_input_buf(rstrm))
+				return (FALSE);
+			continue;
+		}
+		current = (len < current) ? len : current;
+		bcopy(rstrm->in_finger, addr, current);
+		rstrm->in_finger += current;
+		addr += current;
+		len -= current;
+	}
+	return (TRUE);
+}
+
+static bool_t  /* next two bytes of the input stream are treated as a header */
+set_input_fragment(rstrm)
+	register RECSTREAM *rstrm;
+{
+	u_long header;
+
+	if (! get_input_bytes(rstrm, (caddr_t)&header, sizeof(header)))
+		return (FALSE);
+	header = (long)ntohl(header);
+	rstrm->last_frag = ((header & LAST_FRAG) == 0) ? FALSE : TRUE;
+	rstrm->fbtbc = header & (~LAST_FRAG);
+	return (TRUE);
+}
+
+static bool_t  /* consumes input bytes; knows nothing about records! */
+skip_input_bytes(rstrm, cnt)
+	register RECSTREAM *rstrm;
+	long cnt;
+{
+	register int current;
+
+	while (cnt > 0) {
+		current = (int)rstrm->in_boundry - (int)rstrm->in_finger;
+		if (current == 0) {
+			if (! fill_input_buf(rstrm))
+				return (FALSE);
+			continue;
+		}
+		current = (cnt < current) ? cnt : current;
+		rstrm->in_finger += current;
+		cnt -= current;
+	}
+	return (TRUE);
+}
+
+static u_int
+fix_buf_size(s)
+	register u_int s;
+{
+
+	if (s < 100)
+		s = 4000;
+	return (RNDUP(s));
+}
diff --git a/lib/libc/xdr/xdr_reference.c b/lib/libc/xdr/xdr_reference.c
new file mode 100644
index 0000000..91ccff2
--- /dev/null
+++ b/lib/libc/xdr/xdr_reference.c
@@ -0,0 +1,136 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)xdr_reference.c 1.11 87/08/11 SMI";*/
+/*static char *sccsid = "from: @(#)xdr_reference.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: xdr_reference.c,v 1.2 1995/05/30 05:42:12 rgrimes Exp $";
+#endif
+
+/*
+ * xdr_reference.c, Generic XDR routines impelmentation.
+ *
+ * Copyright (C) 1987, Sun Microsystems, Inc.
+ *
+ * These are the "non-trivial" xdr primitives used to serialize and de-serialize
+ * "pointers".  See xdr.h for more info on the interface to xdr.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <rpc/types.h>
+#include <rpc/xdr.h>
+
+#define LASTUNSIGNED	((u_int)0-1)
+
+/*
+ * XDR an indirect pointer
+ * xdr_reference is for recursively translating a structure that is
+ * referenced by a pointer inside the structure that is currently being
+ * translated.  pp references a pointer to storage. If *pp is null
+ * the  necessary storage is allocated.
+ * size is the sizeof the referneced structure.
+ * proc is the routine to handle the referenced structure.
+ */
+bool_t
+xdr_reference(xdrs, pp, size, proc)
+	register XDR *xdrs;
+	caddr_t *pp;		/* the pointer to work on */
+	u_int size;		/* size of the object pointed to */
+	xdrproc_t proc;		/* xdr routine to handle the object */
+{
+	register caddr_t loc = *pp;
+	register bool_t stat;
+
+	if (loc == NULL)
+		switch (xdrs->x_op) {
+		case XDR_FREE:
+			return (TRUE);
+
+		case XDR_DECODE:
+			*pp = loc = (caddr_t) mem_alloc(size);
+			if (loc == NULL) {
+				(void) fprintf(stderr,
+				    "xdr_reference: out of memory\n");
+				return (FALSE);
+			}
+			bzero(loc, (int)size);
+			break;
+	}
+
+	stat = (*proc)(xdrs, loc, LASTUNSIGNED);
+
+	if (xdrs->x_op == XDR_FREE) {
+		mem_free(loc, size);
+		*pp = NULL;
+	}
+	return (stat);
+}
+
+
+/*
+ * xdr_pointer():
+ *
+ * XDR a pointer to a possibly recursive data structure. This
+ * differs with xdr_reference in that it can serialize/deserialiaze
+ * trees correctly.
+ *
+ *  What's sent is actually a union:
+ *
+ *  union object_pointer switch (boolean b) {
+ *  case TRUE: object_data data;
+ *  case FALSE: void nothing;
+ *  }
+ *
+ * > objpp: Pointer to the pointer to the object.
+ * > obj_size: size of the object.
+ * > xdr_obj: routine to XDR an object.
+ *
+ */
+bool_t
+xdr_pointer(xdrs,objpp,obj_size,xdr_obj)
+	register XDR *xdrs;
+	char **objpp;
+	u_int obj_size;
+	xdrproc_t xdr_obj;
+{
+
+	bool_t more_data;
+
+	more_data = (*objpp != NULL);
+	if (! xdr_bool(xdrs,&more_data)) {
+		return (FALSE);
+	}
+	if (! more_data) {
+		*objpp = NULL;
+		return (TRUE);
+	}
+	return (xdr_reference(xdrs,objpp,obj_size,xdr_obj));
+}
diff --git a/lib/libc/xdr/xdr_stdio.c b/lib/libc/xdr/xdr_stdio.c
new file mode 100644
index 0000000..5cfdf20
--- /dev/null
+++ b/lib/libc/xdr/xdr_stdio.c
@@ -0,0 +1,191 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)xdr_stdio.c 1.16 87/08/11 Copyr 1984 Sun Micro";*/
+/*static char *sccsid = "from: @(#)xdr_stdio.c	2.1 88/07/29 4.0 RPCSRC";*/
+static char *rcsid = "$Id: xdr_stdio.c,v 1.1 1994/08/07 18:39:35 wollman Exp $";
+#endif
+
+/*
+ * xdr_stdio.c, XDR implementation on standard i/o file.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ *
+ * This set of routines implements a XDR on a stdio stream.
+ * XDR_ENCODE serializes onto the stream, XDR_DECODE de-serializes
+ * from the stream.
+ */
+
+#include <rpc/types.h>
+#include <stdio.h>
+#include <rpc/xdr.h>
+
+static bool_t	xdrstdio_getlong();
+static bool_t	xdrstdio_putlong();
+static bool_t	xdrstdio_getbytes();
+static bool_t	xdrstdio_putbytes();
+static u_int	xdrstdio_getpos();
+static bool_t	xdrstdio_setpos();
+static long *	xdrstdio_inline();
+static void	xdrstdio_destroy();
+
+/*
+ * Ops vector for stdio type XDR
+ */
+static struct xdr_ops	xdrstdio_ops = {
+	xdrstdio_getlong,	/* deseraialize a long int */
+	xdrstdio_putlong,	/* seraialize a long int */
+	xdrstdio_getbytes,	/* deserialize counted bytes */
+	xdrstdio_putbytes,	/* serialize counted bytes */
+	xdrstdio_getpos,	/* get offset in the stream */
+	xdrstdio_setpos,	/* set offset in the stream */
+	xdrstdio_inline,	/* prime stream for inline macros */
+	xdrstdio_destroy	/* destroy stream */
+};
+
+/*
+ * Initialize a stdio xdr stream.
+ * Sets the xdr stream handle xdrs for use on the stream file.
+ * Operation flag is set to op.
+ */
+void
+xdrstdio_create(xdrs, file, op)
+	register XDR *xdrs;
+	FILE *file;
+	enum xdr_op op;
+{
+
+	xdrs->x_op = op;
+	xdrs->x_ops = &xdrstdio_ops;
+	xdrs->x_private = (caddr_t)file;
+	xdrs->x_handy = 0;
+	xdrs->x_base = 0;
+}
+
+/*
+ * Destroy a stdio xdr stream.
+ * Cleans up the xdr stream handle xdrs previously set up by xdrstdio_create.
+ */
+static void
+xdrstdio_destroy(xdrs)
+	register XDR *xdrs;
+{
+	(void)fflush((FILE *)xdrs->x_private);
+	/* xx should we close the file ?? */
+};
+
+static bool_t
+xdrstdio_getlong(xdrs, lp)
+	XDR *xdrs;
+	register long *lp;
+{
+
+	if (fread((caddr_t)lp, sizeof(long), 1, (FILE *)xdrs->x_private) != 1)
+		return (FALSE);
+#ifndef mc68000
+	*lp = ntohl(*lp);
+#endif
+	return (TRUE);
+}
+
+static bool_t
+xdrstdio_putlong(xdrs, lp)
+	XDR *xdrs;
+	long *lp;
+{
+
+#ifndef mc68000
+	long mycopy = htonl(*lp);
+	lp = &mycopy;
+#endif
+	if (fwrite((caddr_t)lp, sizeof(long), 1, (FILE *)xdrs->x_private) != 1)
+		return (FALSE);
+	return (TRUE);
+}
+
+static bool_t
+xdrstdio_getbytes(xdrs, addr, len)
+	XDR *xdrs;
+	caddr_t addr;
+	u_int len;
+{
+
+	if ((len != 0) && (fread(addr, (int)len, 1, (FILE *)xdrs->x_private) != 1))
+		return (FALSE);
+	return (TRUE);
+}
+
+static bool_t
+xdrstdio_putbytes(xdrs, addr, len)
+	XDR *xdrs;
+	caddr_t addr;
+	u_int len;
+{
+
+	if ((len != 0) && (fwrite(addr, (int)len, 1, (FILE *)xdrs->x_private) != 1))
+		return (FALSE);
+	return (TRUE);
+}
+
+static u_int
+xdrstdio_getpos(xdrs)
+	XDR *xdrs;
+{
+
+	return ((u_int) ftell((FILE *)xdrs->x_private));
+}
+
+static bool_t
+xdrstdio_setpos(xdrs, pos)
+	XDR *xdrs;
+	u_int pos;
+{
+
+	return ((fseek((FILE *)xdrs->x_private, (long)pos, 0) < 0) ?
+		FALSE : TRUE);
+}
+
+static long *
+xdrstdio_inline(xdrs, len)
+	XDR *xdrs;
+	u_int len;
+{
+
+	/*
+	 * Must do some work to implement this: must insure
+	 * enough data in the underlying stdio buffer,
+	 * that the buffer is aligned so that we can indirect through a
+	 * long *, and stuff this pointer in xdrs->x_buf.  Doing
+	 * a fread or fwrite to a scratch buffer would defeat
+	 * most of the gains to be had here and require storage
+	 * management on this buffer, so we don't do this.
+	 */
+	return (NULL);
+}
diff --git a/lib/libc/yp/Makefile.inc b/lib/libc/yp/Makefile.inc
new file mode 100644
index 0000000..529de75
--- /dev/null
+++ b/lib/libc/yp/Makefile.inc
@@ -0,0 +1,17 @@
+#	from: @(#)Makefile.inc	5.3 (Berkeley) 2/20/91
+#	$Id: Makefile.inc,v 1.1 1994/08/07 23:04:53 wollman Exp $
+
+# yp sources
+.PATH: ${.CURDIR}/yp
+
+SRCS+=		xdryp.c yp_xdr.c yplib.c
+CLEANFILES+=	yp_xdr.c yp.h
+
+RPCSRC= ${.DESTDIR}/usr/include/rpcsvc/yp.x
+RPCGEN= rpcgen
+
+yp_xdr.c: ${RPCSRC} yp.h
+	${RPCGEN} -c -o ${.TARGET} ${RPCSRC}
+
+yp.h: ${RPCSRC}
+	${RPCGEN} -h -o ${.TARGET} ${RPCSRC}
diff --git a/lib/libc/yp/xdryp.c b/lib/libc/yp/xdryp.c
new file mode 100644
index 0000000..51a3878
--- /dev/null
+++ b/lib/libc/yp/xdryp.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 1992/3 Theo de Raadt <deraadt@fsa.ca>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef LINT
+static char *rcsid = "$Id: xdryp.c,v 1.3 1995/04/02 19:58:29 wpaul Exp $";
+#endif
+
+#include <rpc/rpc.h>
+#include <rpcsvc/yp.h>
+
+extern int (*ypresp_allfn)();
+extern void *ypresp_data;
+
+/*
+ * I'm leaving the xdr_datum() function in purely for backwards
+ * compatibility. yplib.c doesn't actually use it, but it's listed
+ * in yp_prot.h as being available, so it's probably a good idea to
+ * leave it in in case somebody goes looking for it.
+ */
+typedef struct {
+	char *dptr;
+	int  dsize;
+} datum;
+
+bool_t
+xdr_datum(xdrs, objp)
+XDR *xdrs;
+datum *objp;
+{
+	if (!xdr_bytes(xdrs, (char **)&objp->dptr, (u_int *)&objp->dsize, YPMAXRECORD)) {
+		return (FALSE);
+	}
+	return (TRUE);
+}
+
+bool_t
+xdr_ypresp_all_seq(xdrs, objp)
+XDR *xdrs;
+u_long *objp;
+{
+	struct ypresp_all out;
+	u_long status;
+	char *key, *val;
+	int r;
+
+	bzero(&out, sizeof out);
+	while(1) {
+		if( !xdr_ypresp_all(xdrs, &out)) {
+			xdr_free(xdr_ypresp_all, (char *)&out);
+			*objp = YP_YPERR;
+			return FALSE;
+		}
+		if(out.more == 0) {
+			xdr_free(xdr_ypresp_all, (char *)&out);
+			return FALSE;
+		}
+		status = out.ypresp_all_u.val.stat;
+		switch(status) {
+		case YP_TRUE:
+			key = (char *)malloc(out.ypresp_all_u.val.key.keydat_len + 1);
+			bcopy(out.ypresp_all_u.val.key.keydat_val, key,
+				out.ypresp_all_u.val.key.keydat_len);
+			key[out.ypresp_all_u.val.key.keydat_len] = '\0';
+			val = (char *)malloc(out.ypresp_all_u.val.val.valdat_len + 1);
+			bcopy(out.ypresp_all_u.val.val.valdat_val, val,
+				out.ypresp_all_u.val.val.valdat_len);
+			val[out.ypresp_all_u.val.val.valdat_len] = '\0';
+			xdr_free(xdr_ypresp_all, (char *)&out);
+
+			r = (*ypresp_allfn)(status,
+				key, out.ypresp_all_u.val.key.keydat_len,
+				val, out.ypresp_all_u.val.val.valdat_len,
+				ypresp_data);
+			*objp = status;
+			free(key);
+			free(val);
+			if(r)
+				return TRUE;
+			break;
+		case YP_NOMORE:
+			xdr_free(xdr_ypresp_all, (char *)&out);
+			return TRUE;
+		default:
+			xdr_free(xdr_ypresp_all, (char *)&out);
+			*objp = status;
+			return TRUE;
+		}
+	}
+}
diff --git a/lib/libc/yp/yplib.c b/lib/libc/yp/yplib.c
new file mode 100644
index 0000000..9614fb0
--- /dev/null
+++ b/lib/libc/yp/yplib.c
@@ -0,0 +1,910 @@
+/*
+ * Copyright (c) 1992/3 Theo de Raadt <deraadt@fsa.ca>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef LINT
+static char *rcsid = "$Id: yplib.c,v 1.13 1995/11/05 05:39:04 wpaul Exp $";
+#endif
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/file.h>
+#include <sys/uio.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <rpc/rpc.h>
+#include <rpc/xdr.h>
+#include <rpcsvc/yp.h>
+
+
+/*
+ * We have to define these here due to clashes between yp_prot.h and
+ * yp.h.
+ */
+
+struct dom_binding {
+	struct dom_binding *dom_pnext;
+	char dom_domain[YPMAXDOMAIN + 1];
+	struct sockaddr_in dom_server_addr;
+	u_short dom_server_port;
+	int dom_socket;
+	CLIENT *dom_client;
+	u_short dom_local_port;
+	long dom_vers;
+};
+
+#include <rpcsvc/ypclnt.h>
+
+#ifndef YPBINDLOCK
+#define YPBINDLOCK "/var/run/ypbind.lock"
+#endif
+
+#ifndef BINDINGDIR
+#define BINDINGDIR "/var/yp/binding"
+#endif
+#define YPMATCHCACHE
+#define MAX_RETRIES 20
+
+extern bool_t xdr_domainname(), xdr_ypbind_resp();
+extern bool_t xdr_ypreq_key(), xdr_ypresp_val();
+extern bool_t xdr_ypreq_nokey(), xdr_ypresp_key_val();
+extern bool_t xdr_ypresp_all(), xdr_ypresp_all_seq();
+extern bool_t xdr_ypresp_master();
+
+int (*ypresp_allfn)();
+void *ypresp_data;
+
+struct dom_binding *_ypbindlist;
+static char _yp_domain[MAXHOSTNAMELEN];
+int _yplib_timeout = 10;
+
+#ifdef YPMATCHCACHE
+int _yplib_cache = 5;
+
+static struct ypmatch_ent {
+	struct ypmatch_ent *next;
+	char *map, *key, *val;
+	int keylen, vallen;
+	time_t expire_t;
+} *ypmc;
+
+static void
+ypmatch_add(map, key, keylen, val, vallen)
+char *map;
+char *key;
+int keylen;
+char *val;
+int vallen;
+{
+	struct ypmatch_ent *ep;
+	time_t t;
+
+	time(&t);
+
+	for(ep=ypmc; ep; ep=ep->next)
+		if(ep->expire_t < t)
+			break;
+	if(ep==NULL) {
+		ep = (struct ypmatch_ent *)malloc(sizeof *ep);
+		bzero((char *)ep, sizeof *ep);
+		if(ypmc)
+			ep->next = ypmc;
+		ypmc = ep;
+	}
+
+	if(ep->key)
+		free(ep->key);
+	if(ep->val)
+		free(ep->val);
+
+	ep->key = NULL;
+	ep->val = NULL;
+
+	ep->key = (char *)malloc(keylen);
+	if(ep->key==NULL)
+		return;
+
+	ep->val = (char *)malloc(vallen);
+	if(ep->key==NULL) {
+		free(ep->key);
+		ep->key = NULL;
+		return;
+	}
+	ep->keylen = keylen;
+	ep->vallen = vallen;
+
+	bcopy(key, ep->key, ep->keylen);
+	bcopy(val, ep->val, ep->vallen);
+
+	if(ep->map) {
+		if( strcmp(ep->map, map) ) {
+			free(ep->map);
+			ep->map = strdup(map);
+		}
+	} else {
+		ep->map = strdup(map);
+	}
+
+	ep->expire_t = t + _yplib_cache;
+}
+
+static bool_t
+ypmatch_find(map, key, keylen, val, vallen)
+char *map;
+char *key;
+int keylen;
+char **val;
+int *vallen;
+{
+	struct ypmatch_ent *ep;
+	time_t t;
+
+	if(ypmc==NULL)
+		return 0;
+
+	time(&t);
+
+	for(ep=ypmc; ep; ep=ep->next) {
+		if(ep->keylen != keylen)
+			continue;
+		if(strcmp(ep->map, map))
+			continue;
+		if(bcmp(ep->key, key, keylen))
+			continue;
+		if(t > ep->expire_t)
+			continue;
+
+		*val = ep->val;
+		*vallen = ep->vallen;
+		return 1;
+	}
+	return 0;
+}
+#endif
+
+char *
+ypbinderr_string(incode)
+int incode;
+{
+	static char err[80];
+	switch(incode) {
+	case 0:
+		return "Success";
+	case YPBIND_ERR_ERR:
+		return "Internal ypbind error";
+	case YPBIND_ERR_NOSERV:
+		return "Domain not bound";
+	case YPBIND_ERR_RESC:
+		return "System resource allocation failure";
+	}
+	sprintf(err, "Unknown ypbind error: #%d\n", incode);
+	return err;
+}
+
+int
+_yp_dobind(dom, ypdb)
+char *dom;
+struct dom_binding **ypdb;
+{
+	static int pid = -1;
+	char path[MAXPATHLEN];
+	struct dom_binding *ysd, *ysd2;
+	struct ypbind_resp ypbr;
+	struct timeval tv;
+	struct sockaddr_in clnt_sin;
+	int clnt_sock, lfd, fd, gpid;
+	CLIENT *client;
+	int new = 0, r;
+	int retries = 0;
+
+	gpid = getpid();
+	if( !(pid==-1 || pid==gpid) ) {
+		ysd = _ypbindlist;
+		while(ysd) {
+			if(ysd->dom_client)
+				clnt_destroy(ysd->dom_client);
+			ysd2 = ysd->dom_pnext;
+			free(ysd);
+			ysd = ysd2;
+		}
+		_ypbindlist = NULL;
+	}
+	pid = gpid;
+
+	if(ypdb!=NULL)
+		*ypdb = NULL;
+
+	if(dom==NULL || strlen(dom)==0)
+		return YPERR_BADARGS;
+
+	for(ysd = _ypbindlist; ysd; ysd = ysd->dom_pnext)
+		if( strcmp(dom, ysd->dom_domain) == 0)
+			break;
+	if(ysd==NULL) {
+		ysd = (struct dom_binding *)malloc(sizeof *ysd);
+		bzero((char *)ysd, sizeof *ysd);
+		ysd->dom_socket = -1;
+		ysd->dom_vers = 0;
+		new = 1;
+	}
+
+	if ((lfd = open(YPBINDLOCK, O_RDONLY)) == -1)
+		return(YPERR_YPBIND);
+	errno = 0;
+	switch (flock(lfd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK) {
+	case 0:
+		close(lfd);
+		return (YPERR_YPBIND);
+		break;
+	case 1:
+	default:
+		close(lfd);
+		break;
+	}
+
+again:
+	retries++;
+	if (retries > MAX_RETRIES) {
+		if (new)
+			free(ysd);
+		return(YPERR_YPBIND);
+	}
+#ifdef BINDINGDIR
+	if(ysd->dom_vers==0) {
+		sprintf(path, "%s/%s.%d", BINDINGDIR, dom, 2);
+		if( (fd=open(path, O_RDONLY)) == -1) {
+			/* no binding file, YP is dead. */
+			/* Try to bring it back to life. */
+			close(fd);
+			goto skipit;
+		}
+		if( flock(fd, LOCK_EX|LOCK_NB) == -1 && errno==EWOULDBLOCK) {
+			struct iovec iov[2];
+			struct ypbind_resp ybr;
+			u_short	ypb_port;
+
+			iov[0].iov_base = (caddr_t)&ypb_port;
+			iov[0].iov_len = sizeof ypb_port;
+			iov[1].iov_base = (caddr_t)&ybr;
+			iov[1].iov_len = sizeof ybr;
+
+			r = readv(fd, iov, 2);
+			if(r != iov[0].iov_len + iov[1].iov_len) {
+				close(fd);
+				ysd->dom_vers = -1;
+				goto again;
+			}
+
+			bzero(&ysd->dom_server_addr, sizeof ysd->dom_server_addr);
+			ysd->dom_server_addr.sin_family = AF_INET;
+			ysd->dom_server_addr.sin_len = sizeof(struct sockaddr_in);
+			ysd->dom_server_addr.sin_addr.s_addr =
+			    *(u_long *)&ybr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_addr;
+			ysd->dom_server_addr.sin_port =
+			    *(u_short *)&ybr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_port;
+
+			ysd->dom_server_port = ysd->dom_server_addr.sin_port;
+			close(fd);
+			goto gotit;
+		} else {
+			/* no lock on binding file, YP is dead. */
+			/* Try to bring it back to life. */
+			close(fd);
+			goto skipit;
+		}
+	}
+skipit:
+#endif
+	if(ysd->dom_vers==-1 || ysd->dom_vers==0) {
+		bzero((char *)&clnt_sin, sizeof clnt_sin);
+		clnt_sin.sin_family = AF_INET;
+		clnt_sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+
+		clnt_sock = RPC_ANYSOCK;
+		client = clnttcp_create(&clnt_sin, YPBINDPROG, YPBINDVERS, &clnt_sock,
+			0, 0);
+		if(client==NULL) {
+			clnt_pcreateerror("clnttcp_create");
+			if(new)
+				free(ysd);
+			return (YPERR_YPBIND);
+		}
+
+		tv.tv_sec = _yplib_timeout/2;
+		tv.tv_usec = 0;
+		r = clnt_call(client, YPBINDPROC_DOMAIN,
+			xdr_domainname, (char *)&dom, xdr_ypbind_resp, &ypbr, tv);
+		if(r != RPC_SUCCESS) {
+			fprintf(stderr,
+			"YP: server for domain %s not responding, retrying\n", dom);
+			clnt_destroy(client);
+			ysd->dom_vers = -1;
+			goto again;
+		} else {
+			if (ypbr.ypbind_status != YPBIND_SUCC_VAL) {
+				clnt_destroy(client);
+				ysd->dom_vers = -1;
+				sleep(_yplib_timeout/2);
+				goto again;
+			}
+		}
+		clnt_destroy(client);
+
+		bzero((char *)&ysd->dom_server_addr, sizeof ysd->dom_server_addr);
+		ysd->dom_server_addr.sin_family = AF_INET;
+		ysd->dom_server_addr.sin_port =
+			*(u_short *)&ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_port;
+		ysd->dom_server_addr.sin_addr.s_addr =
+			*(u_long *)&ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_addr;
+		ysd->dom_server_port =
+			*(u_short *)&ypbr.ypbind_resp_u.ypbind_bindinfo.ypbind_binding_port;
+gotit:
+		ysd->dom_vers = YPVERS;
+		strcpy(ysd->dom_domain, dom);
+	}
+
+	tv.tv_sec = _yplib_timeout/2;
+	tv.tv_usec = 0;
+	if(ysd->dom_client)
+		clnt_destroy(ysd->dom_client);
+	ysd->dom_socket = RPC_ANYSOCK;
+	ysd->dom_client = clntudp_create(&ysd->dom_server_addr,
+		YPPROG, YPVERS, tv, &ysd->dom_socket);
+	if(ysd->dom_client==NULL) {
+		clnt_pcreateerror("clntudp_create");
+		ysd->dom_vers = -1;
+		goto again;
+	}
+	if( fcntl(ysd->dom_socket, F_SETFD, 1) == -1)
+		perror("fcntl: F_SETFD");
+
+	if(new) {
+		ysd->dom_pnext = _ypbindlist;
+		_ypbindlist = ysd;
+	}
+
+	if(ypdb!=NULL)
+		*ypdb = ysd;
+	return 0;
+}
+
+static void
+_yp_unbind(ypb)
+struct dom_binding *ypb;
+{
+	clnt_destroy(ypb->dom_client);
+	ypb->dom_client = NULL;
+	ypb->dom_socket = -1;
+}
+
+int
+yp_bind(dom)
+char *dom;
+{
+	return _yp_dobind(dom, NULL);
+}
+
+void
+yp_unbind(dom)
+char *dom;
+{
+	struct dom_binding *ypb, *ypbp;
+
+	ypbp = NULL;
+	for(ypb=_ypbindlist; ypb; ypb=ypb->dom_pnext) {
+		if( strcmp(dom, ypb->dom_domain) == 0) {
+			clnt_destroy(ypb->dom_client);
+			if(ypbp)
+				ypbp->dom_pnext = ypb->dom_pnext;
+			else
+				_ypbindlist = ypb->dom_pnext;
+			free(ypb);
+			return;
+		}
+		ypbp = ypb;
+	}
+	return;
+}
+
+int
+yp_match(indomain, inmap, inkey, inkeylen, outval, outvallen)
+char *indomain;
+char *inmap;
+const char *inkey;
+int inkeylen;
+char **outval;
+int *outvallen;
+{
+	struct dom_binding *ysd;
+	struct ypresp_val yprv;
+	struct timeval tv;
+	struct ypreq_key yprk;
+	int r;
+
+	*outval = NULL;
+	*outvallen = 0;
+
+	/* Sanity check */
+
+	if (inkey == NULL || !strlen(inkey) || inkeylen <= 0 ||
+	    inmap == NULL || !strlen(inmap) ||
+	    indomain == NULL || !strlen(indomain))
+		return YPERR_BADARGS;
+
+#ifdef YPMATCHCACHE
+	if( !strcmp(_yp_domain, indomain) && ypmatch_find(inmap, inkey,
+	    inkeylen, &yprv.val.valdat_val, &yprv.val.valdat_len)) {
+		*outvallen = yprv.val.valdat_len;
+		*outval = (char *)malloc(*outvallen+1);
+		bcopy(yprv.val.valdat_val, *outval, *outvallen);
+		(*outval)[*outvallen] = '\0';
+		return 0;
+	}
+#endif
+
+again:
+	if( _yp_dobind(indomain, &ysd) != 0)
+		return YPERR_DOMAIN;
+
+	tv.tv_sec = _yplib_timeout;
+	tv.tv_usec = 0;
+
+	yprk.domain = indomain;
+	yprk.map = inmap;
+	yprk.key.keydat_val = (char *)inkey;
+	yprk.key.keydat_len = inkeylen;
+
+	bzero((char *)&yprv, sizeof yprv);
+
+	r = clnt_call(ysd->dom_client, YPPROC_MATCH,
+		xdr_ypreq_key, &yprk, xdr_ypresp_val, &yprv, tv);
+	if(r != RPC_SUCCESS) {
+		clnt_perror(ysd->dom_client, "yp_match: clnt_call");
+		ysd->dom_vers = -1;
+		goto again;
+	}
+	if( !(r=ypprot_err(yprv.stat)) ) {
+		*outvallen = yprv.val.valdat_len;
+		*outval = (char *)malloc(*outvallen+1);
+		bcopy(yprv.val.valdat_val, *outval, *outvallen);
+		(*outval)[*outvallen] = '\0';
+#ifdef YPMATCHCACHE
+		if( strcmp(_yp_domain, indomain)==0 )
+			 ypmatch_add(inmap, inkey, inkeylen, *outval, *outvallen);
+#endif
+	}
+	xdr_free(xdr_ypresp_val, (char *)&yprv);
+	_yp_unbind(ysd);
+	return r;
+}
+
+int
+yp_get_default_domain(domp)
+char **domp;
+{
+	*domp = NULL;
+	if(_yp_domain[0] == '\0')
+		if( getdomainname(_yp_domain, sizeof _yp_domain))
+			return YPERR_NODOM;
+	*domp = _yp_domain;
+	return 0;
+}
+
+int
+yp_first(indomain, inmap, outkey, outkeylen, outval, outvallen)
+char *indomain;
+char *inmap;
+char **outkey;
+int *outkeylen;
+char **outval;
+int *outvallen;
+{
+	struct ypresp_key_val yprkv;
+	struct ypreq_nokey yprnk;
+	struct dom_binding *ysd;
+	struct timeval tv;
+	int r;
+
+	/* Sanity check */
+
+	if (indomain == NULL || !strlen(indomain) ||
+	    inmap == NULL || !strlen(inmap))
+		return YPERR_BADARGS;
+
+	*outkey = *outval = NULL;
+	*outkeylen = *outvallen = 0;
+
+again:
+	if( _yp_dobind(indomain, &ysd) != 0)
+		return YPERR_DOMAIN;
+
+	tv.tv_sec = _yplib_timeout;
+	tv.tv_usec = 0;
+
+	yprnk.domain = indomain;
+	yprnk.map = inmap;
+	bzero((char *)&yprkv, sizeof yprkv);
+
+	r = clnt_call(ysd->dom_client, YPPROC_FIRST,
+		xdr_ypreq_nokey, &yprnk, xdr_ypresp_key_val, &yprkv, tv);
+	if(r != RPC_SUCCESS) {
+		clnt_perror(ysd->dom_client, "yp_first: clnt_call");
+		ysd->dom_vers = 0;
+		goto again;
+	}
+	if( !(r=ypprot_err(yprkv.stat)) ) {
+		*outkeylen = yprkv.key.keydat_len;
+		*outkey = (char *)malloc(*outkeylen+1);
+		bcopy(yprkv.key.keydat_val, *outkey, *outkeylen);
+		(*outkey)[*outkeylen] = '\0';
+		*outvallen = yprkv.val.valdat_len;
+		*outval = (char *)malloc(*outvallen+1);
+		bcopy(yprkv.val.valdat_val, *outval, *outvallen);
+		(*outval)[*outvallen] = '\0';
+	}
+	xdr_free(xdr_ypresp_key_val, (char *)&yprkv);
+	_yp_unbind(ysd);
+	return r;
+}
+
+int
+yp_next(indomain, inmap, inkey, inkeylen, outkey, outkeylen, outval, outvallen)
+char *indomain;
+char *inmap;
+char *inkey;
+int inkeylen;
+char **outkey;
+int *outkeylen;
+char **outval;
+int *outvallen;
+{
+	struct ypresp_key_val yprkv;
+	struct ypreq_key yprk;
+	struct dom_binding *ysd;
+	struct timeval tv;
+	int r;
+
+	/* Sanity check */
+
+	if (inkey == NULL || !strlen(inkey) || inkeylen <= 0 ||
+	    inmap == NULL || !strlen(inmap) ||
+	    indomain == NULL || !strlen(indomain))
+		return YPERR_BADARGS;
+
+	*outkey = *outval = NULL;
+	*outkeylen = *outvallen = 0;
+
+again:
+	if( _yp_dobind(indomain, &ysd) != 0)
+		return YPERR_DOMAIN;
+
+	tv.tv_sec = _yplib_timeout;
+	tv.tv_usec = 0;
+
+	yprk.domain = indomain;
+	yprk.map = inmap;
+	yprk.key.keydat_val = inkey;
+	yprk.key.keydat_len = inkeylen;
+	bzero((char *)&yprkv, sizeof yprkv);
+
+	r = clnt_call(ysd->dom_client, YPPROC_NEXT,
+		xdr_ypreq_key, &yprk, xdr_ypresp_key_val, &yprkv, tv);
+	if(r != RPC_SUCCESS) {
+		clnt_perror(ysd->dom_client, "yp_next: clnt_call");
+		ysd->dom_vers = -1;
+		goto again;
+	}
+	if( !(r=ypprot_err(yprkv.stat)) ) {
+		*outkeylen = yprkv.key.keydat_len;
+		*outkey = (char *)malloc(*outkeylen+1);
+		bcopy(yprkv.key.keydat_val, *outkey, *outkeylen);
+		(*outkey)[*outkeylen] = '\0';
+		*outvallen = yprkv.val.valdat_len;
+		*outval = (char *)malloc(*outvallen+1);
+		bcopy(yprkv.val.valdat_val, *outval, *outvallen);
+		(*outval)[*outvallen] = '\0';
+	}
+	xdr_free(xdr_ypresp_key_val, (char *)&yprkv);
+	_yp_unbind(ysd);
+	return r;
+}
+
+int
+yp_all(indomain, inmap, incallback)
+char *indomain;
+char *inmap;
+struct ypall_callback *incallback;
+{
+	struct ypreq_nokey yprnk;
+	struct dom_binding *ysd;
+	struct timeval tv;
+	struct sockaddr_in clnt_sin;
+	CLIENT *clnt;
+	u_long status;
+	int clnt_sock;
+
+	/* Sanity check */
+
+	if (indomain == NULL || !strlen(indomain) ||
+	    inmap == NULL || !strlen(inmap))
+		return YPERR_BADARGS;
+
+	if( _yp_dobind(indomain, &ysd) != 0)
+		return YPERR_DOMAIN;
+
+	tv.tv_sec = _yplib_timeout;
+	tv.tv_usec = 0;
+	clnt_sock = RPC_ANYSOCK;
+	clnt_sin = ysd->dom_server_addr;
+	clnt_sin.sin_port = 0;
+	clnt = clnttcp_create(&clnt_sin, YPPROG, YPVERS, &clnt_sock, 0, 0);
+	if(clnt==NULL) {
+		printf("clnttcp_create failed\n");
+		return YPERR_PMAP;
+	}
+
+	yprnk.domain = indomain;
+	yprnk.map = inmap;
+	ypresp_allfn = incallback->foreach;
+	ypresp_data = (void *)incallback->data;
+
+	(void) clnt_call(clnt, YPPROC_ALL,
+		xdr_ypreq_nokey, &yprnk, xdr_ypresp_all_seq, &status, tv);
+	clnt_destroy(clnt);
+	xdr_free(xdr_ypresp_all_seq, (char *)&status);	/* not really needed... */
+	_yp_unbind(ysd);
+
+	if(status != YP_FALSE)
+		return ypprot_err(status);
+	return 0;
+}
+
+int
+yp_order(indomain, inmap, outorder)
+char *indomain;
+char *inmap;
+int *outorder;
+{
+ 	struct dom_binding *ysd;
+	struct ypresp_order ypro;
+	struct ypreq_nokey yprnk;
+	struct timeval tv;
+	int r;
+
+	/* Sanity check */
+
+	if (indomain == NULL || !strlen(indomain) ||
+	    inmap == NULL || !strlen(inmap))
+		return YPERR_BADARGS;
+
+again:
+	if( _yp_dobind(indomain, &ysd) != 0)
+		return YPERR_DOMAIN;
+
+	tv.tv_sec = _yplib_timeout;
+	tv.tv_usec = 0;
+
+	yprnk.domain = indomain;
+	yprnk.map = inmap;
+
+	bzero((char *)(char *)&ypro, sizeof ypro);
+
+	r = clnt_call(ysd->dom_client, YPPROC_ORDER,
+		xdr_ypreq_nokey, &yprnk, xdr_ypresp_order, &ypro, tv);
+	if(r != RPC_SUCCESS) {
+		clnt_perror(ysd->dom_client, "yp_order: clnt_call");
+		ysd->dom_vers = -1;
+		goto again;
+	}
+
+	*outorder = ypro.ordernum;
+	xdr_free(xdr_ypresp_order, (char *)&ypro);
+	_yp_unbind(ysd);
+	return ypprot_err(ypro.stat);
+}
+
+int
+yp_master(indomain, inmap, outname)
+char *indomain;
+char *inmap;
+char **outname;
+{
+	struct dom_binding *ysd;
+	struct ypresp_master yprm;
+	struct ypreq_nokey yprnk;
+	struct timeval tv;
+	int r;
+
+	/* Sanity check */
+
+	if (indomain == NULL || !strlen(indomain) ||
+	    inmap == NULL || !strlen(inmap))
+		return YPERR_BADARGS;
+again:
+	if( _yp_dobind(indomain, &ysd) != 0)
+		return YPERR_DOMAIN;
+
+	tv.tv_sec = _yplib_timeout;
+	tv.tv_usec = 0;
+
+	yprnk.domain = indomain;
+	yprnk.map = inmap;
+
+	bzero((char *)&yprm, sizeof yprm);
+
+	r = clnt_call(ysd->dom_client, YPPROC_MASTER,
+		xdr_ypreq_nokey, &yprnk, xdr_ypresp_master, &yprm, tv);
+	if(r != RPC_SUCCESS) {
+		clnt_perror(ysd->dom_client, "yp_master: clnt_call");
+		ysd->dom_vers = -1;
+		goto again;
+	}
+	if( !(r=ypprot_err(yprm.stat)) ) {
+		*outname = (char *)strdup(yprm.peer);
+	}
+	xdr_free(xdr_ypresp_master, (char *)&yprm);
+	_yp_unbind(ysd);
+	return r;
+}
+int
+yp_maplist(indomain, outmaplist)
+char *indomain;
+struct ypmaplist **outmaplist;
+{
+	struct dom_binding *ysd;
+	struct ypresp_maplist ypml;
+	struct timeval tv;
+	int r;
+
+	/* Sanity check */
+
+	if (indomain == NULL || !strlen(indomain))
+		return YPERR_BADARGS;
+
+again:
+	if( _yp_dobind(indomain, &ysd) != 0)
+		return YPERR_DOMAIN;
+
+	tv.tv_sec = _yplib_timeout;
+	tv.tv_usec = 0;
+
+	bzero((char *)&ypml, sizeof ypml);
+
+	r = clnt_call(ysd->dom_client, YPPROC_MAPLIST,
+		xdr_domainname, (char *)&indomain, xdr_ypresp_maplist, &ypml, tv);
+	if (r != RPC_SUCCESS) {
+		clnt_perror(ysd->dom_client, "yp_maplist: clnt_call");
+		ysd->dom_vers = -1;
+		goto again;
+	}
+	*outmaplist = ypml.maps;
+	/* NO: xdr_free(xdr_ypresp_maplist, &ypml);*/
+	_yp_unbind(ysd);
+	return ypprot_err(ypml.stat);
+}
+
+char *
+yperr_string(incode)
+int incode;
+{
+	static char err[80];
+
+	switch(incode) {
+	case 0:
+		return "Success";
+	case YPERR_BADARGS:
+		return "Request arguments bad";
+	case YPERR_RPC:
+		return "RPC failure";
+	case YPERR_DOMAIN:
+		return "Can't bind to server which serves this domain";
+	case YPERR_MAP:
+		return "No such map in server's domain";
+	case YPERR_KEY:
+		return "No such key in map";
+	case YPERR_YPERR:
+		return "YP server error";
+	case YPERR_RESRC:
+		return "Local resource allocation failure";
+	case YPERR_NOMORE:
+		return "No more records in map database";
+	case YPERR_PMAP:
+		return "Can't communicate with portmapper";
+	case YPERR_YPBIND:
+		return "Can't communicate with ypbind";
+	case YPERR_YPSERV:
+		return "Can't communicate with ypserv";
+	case YPERR_NODOM:
+		return "Local domain name not set";
+	case YPERR_BADDB:
+		return "Server data base is bad";
+	case YPERR_VERS:
+		return "YP server version mismatch - server can't supply service.";
+	case YPERR_ACCESS:
+		return "Access violation";
+	case YPERR_BUSY:
+		return "Database is busy";
+	}
+	sprintf(err, "YP unknown error %d\n", incode);
+	return err;
+}
+
+int
+ypprot_err(incode)
+unsigned int incode;
+{
+	switch(incode) {
+	case YP_TRUE:
+		return 0;
+	case YP_FALSE:
+		return YPERR_YPBIND;
+	case YP_NOMORE:
+		return YPERR_NOMORE;
+	case YP_NOMAP:
+		return YPERR_MAP;
+	case YP_NODOM:
+		return YPERR_DOMAIN;
+	case YP_NOKEY:
+		return YPERR_KEY;
+	case YP_BADOP:
+		return YPERR_YPERR;
+	case YP_BADDB:
+		return YPERR_BADDB;
+	case YP_YPERR:
+		return YPERR_YPERR;
+	case YP_BADARGS:
+		return YPERR_BADARGS;
+	case YP_VERS:
+		return YPERR_VERS;
+	}
+	return YPERR_YPERR;
+}
+
+int
+_yp_check(dom)
+char **dom;
+{
+	char *unused;
+
+	if( _yp_domain[0]=='\0' )
+		if( yp_get_default_domain(&unused) )
+			return 0;
+
+	if(dom)
+		*dom = _yp_domain;
+
+	if( yp_bind(_yp_domain)==0 ) {
+		yp_unbind(_yp_domain);
+		return 1;
+	}
+	return 0;
+}