BSD 4.4 Lite Lib Sources

145 files changed, 22080 insertions, 0 deletions

diff --git a/lib/libc/gen/Makefile.inc b/lib/libc/gen/Makefile.inc
new file mode 100644
index 0000000..28fa723
--- /dev/null
+++ b/lib/libc/gen/Makefile.inc
@@ -0,0 +1,92 @@
+#	@(#)Makefile.inc	8.3 (Berkeley) 4/16/94
+
+# machine-independent gen sources
+.PATH: ${.CURDIR}/${MACHINE}/gen ${.CURDIR}/gen
+
+SRCS+=	alarm.c assert.c clock.c closedir.c confstr.c crypt.c ctermid.c \
+	ctime.c daemon.c devname.c difftime.c disklabel.c err.c errlst.c \
+	exec.c fnmatch.c frexp.c fstab.c fts.c getbsize.c getcap.c getcwd.c \
+	getgrent.c getgrouplist.c gethostname.c getloadavg.c getlogin.c \
+	getmntinfo.c getnetgrent.c getpagesize.c getpass.c getpwent.c \
+	getttyent.c getusershell.c glob.c initgroups.c isatty.c nice.c nlist.c \
+	opendir.c pause.c popen.c psignal.c pwcache.c raise.c readdir.c \
+	rewinddir.c scandir.c seekdir.c sethostname.c setjmperr.c \
+	setmode.c siginterrupt.c siglist.c signal.c sigsetjmp.c \
+	sigsetops.c sleep.c sysconf.c sysctl.c syslog.c telldir.c \
+	termios.c time.c times.c timezone.c ttyname.c ttyslot.c ualarm.c \
+	uname.c unvis.c usleep.c utime.c valloc.c vis.c wait.c wait3.c \
+	waitpid.c
+
+# machine-dependent gen sources
+.include "${.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+=	alarm.0 clock.0 confstr.0 crypt.0 ctermid.0 ctime.0 daemon.0 \
+	devname.0 directory.0 err.0 exec.0 fnmatch.0 frexp.0 fts.0 \
+	getbsize.0 getcap.0 getcwd.0 getdiskbyname.0 getfsent.0 \
+	getgrent.0 getgrouplist.0 gethostname.0 getloadavg.0 \
+	getmntinfo.0 getnetgrent.0 getpagesize.0 getpass.0 getpwent.0 \
+	getttyent.0 getusershell.0 glob.0 initgroups.0 isinf.0 ldexp.0 \
+	modf.0 nice.0 nlist.0 pause.0 popen.0 psignal.0 pwcache.0 \
+	raise.0 scandir.0 setjmp.0 setmode.0 siginterrupt.0 signal.0 \
+	sigsetops.0 sleep.0 sysconf.0 sysctl.0 syslog.0 tcgetpgrp.0 \
+	tcsendbreak.0 tcsetattr.0 tcsetpgrp.0 time.0 times.0 timezone.0 \
+	ttyname.0 tzset.0 ualarm.0 uname.0 unvis.0 usleep.0 utime.0 \
+	valloc.0 vis.0
+
+MLINKS+=crypt.3 encrypt.3 crypt.3 setkey.3
+MLINKS+=ctime.3 asctime.3 ctime.3 difftime.3 ctime.3 gmtime.3 \
+	ctime.3 localtime.3 ctime.3 mktime.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+=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+=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+=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/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..f70184e
--- /dev/null
+++ b/lib/libc/gen/clock.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.
+.\"
+.\"     @(#)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 CLK_TCK Ns s.
+.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..12dc866
--- /dev/null
+++ b/lib/libc/gen/clock.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[] = "@(#)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 * 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
+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..d3fc00b
--- /dev/null
+++ b/lib/libc/gen/closedir.c
@@ -0,0 +1,59 @@
+/*
+ * 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;
+	(void)free((void *)dirp->dd_buf);
+	(void)free((void *)dirp);
+	return(close(fd));
+}
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..cc4df53
--- /dev/null
+++ b/lib/libc/gen/confstr.c
@@ -0,0 +1,85 @@
+/*-
+ * 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>
+
+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..67ec98d
--- /dev/null
+++ b/lib/libc/gen/crypt.3
@@ -0,0 +1,280 @@
+.\" 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.
+.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..1aad9c6
--- /dev/null
+++ b/lib/libc/gen/crypt.c
@@ -0,0 +1,83 @@
+/*
+ * 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: /a/cvs/386BSD/src/lib/libc/gen/crypt.c,v 1.6 1993/08/29 22:03:56 nate Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <unistd.h>
+#include <stdio.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.
+ */
+
+des_setkey(key)
+	register const char *key;
+{
+	fprintf(stderr, "WARNING!  des_setkey(3) not present in the system!\n");
+	return (0);
+}
+
+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);
+}
+
+setkey(key)
+	register const char *key;
+{
+	fprintf(stderr, "WARNING!  setkey(3) not present in the system!\n");
+	return (0);
+}
+
+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/ctime.3 b/lib/libc/gen/ctime.3
new file mode 100644
index 0000000..ff6a8ef
--- /dev/null
+++ b/lib/libc/gen/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/gen/ctime.c b/lib/libc/gen/ctime.c
new file mode 100644
index 0000000..b11e39b
--- /dev/null
+++ b/lib/libc/gen/ctime.c
@@ -0,0 +1,1381 @@
+/*
+ * Copyright (c) 1987, 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Arthur David Olson of the National Cancer Institute.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ctime.c	8.2 (Berkeley) 3/20/94";
+#endif /* LIBC_SCCS and not 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 <sys/param.h>
+#include <fcntl.h>
+#include <time.h>
+#include <tzfile.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#ifdef __STDC__
+#include <stdlib.h>
+
+#define P(s)		s
+#define alloc_size_t	size_t
+#define qsort_size_t	size_t
+#define fread_size_t	size_t
+#define fwrite_size_t	size_t
+
+#else /* !defined __STDC__ */
+
+#define P(s)		()
+
+typedef char *		genericptr_t;
+typedef unsigned	alloc_size_t;
+typedef int		qsort_size_t;
+typedef int		fread_size_t;
+typedef int		fwrite_size_t;
+
+extern char *	calloc();
+extern char *	malloc();
+extern char *	realloc();
+extern char *	getenv();
+
+#endif /* !defined __STDC__ */
+
+extern time_t	time();
+
+#define ACCESS_MODE	O_RDONLY
+#define OPEN_MODE	O_RDONLY
+
+#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 */
+
+#ifndef TRUE
+#define TRUE		1
+#define FALSE		0
+#endif /* !defined TRUE */
+
+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 */
+};
+
+struct lsinfo {				/* leap second information */
+	time_t		ls_trans;	/* transition time */
+	long		ls_corr;	/* correction to apply */
+};
+
+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[(TZ_MAX_CHARS + 1 > sizeof GMT) ?
+				TZ_MAX_CHARS + 1 : sizeof GMT];
+	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 void		normalize P((int * tensptr, int * unitsptr, int base));
+static void		settzname P((void));
+static time_t		time1 P((struct tm * tmp, void (* funcp)(),
+				long offset));
+static time_t		time2 P((struct tm *tmp, void (* funcp)(),
+				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 */
+
+static int		lcl_is_set;
+static int		gmt_is_set;
+
+char *			tzname[2] = {
+	WILDABBR,
+	WILDABBR
+};
+
+#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 = 0;
+	for (i = 0; i < 4; ++i)
+		result = (result << 8) | (codep[i] & 0xff);
+	return result;
+}
+
+static void
+settzname()
+{
+	register const 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] =
+			(char *) &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] =
+			(char *) &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;
+	{
+		char		fullname[FILENAME_MAX + 1];
+
+		if (name[0] == ':')
+			++name;
+		if (name[0] != '/') {
+			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);
+			name = fullname;
+		}
+		if ((fid = open(name, OPEN_MODE)) == -1)
+			return -1;
+	}
+	{
+		register const struct tzhead *	tzhp;
+		char				buf[sizeof *sp + sizeof *tzhp];
+		int				ttisstdcnt;
+
+		i = read(fid, buf, sizeof buf);
+		if (close(fid) != 0 || i < sizeof *tzhp)
+			return -1;
+		tzhp = (struct tzhead *) buf;
+		ttisstdcnt = (int) detzcode(tzhp->tzh_ttisstdcnt);
+		sp->leapcnt = (int) detzcode(tzhp->tzh_leapcnt);
+		sp->timecnt = (int) detzcode(tzhp->tzh_timecnt);
+		sp->typecnt = (int) detzcode(tzhp->tzh_typecnt);
+		sp->charcnt = (int) detzcode(tzhp->tzh_charcnt);
+		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))
+				return -1;
+		if (i < sizeof *tzhp +
+			sp->timecnt * (4 + sizeof (char)) +
+			sp->typecnt * (4 + 2 * sizeof (char)) +
+			sp->charcnt * sizeof (char) +
+			sp->leapcnt * 2 * 4 +
+			ttisstdcnt * sizeof (char))
+				return -1;
+		p = buf + sizeof *tzhp;
+		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;
+			}
+		}
+	}
+	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;
+
+	strp = getnum(strp, &num, 0, HOURSPERDAY);
+	if (strp == NULL)
+		return NULL;
+	*secsp = num * SECSPERHOUR;
+	if (*strp == ':') {
+		++strp;
+		strp = getnum(strp, &num, 0, MINSPERHOUR - 1);
+		if (strp == NULL)
+			return NULL;
+		*secsp += num * SECSPERMIN;
+		if (*strp == ':') {
+			++strp;
+			strp = getnum(strp, &num, 0, SECSPERMIN - 1);
+			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;
+
+	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;
+	int				stdlen;
+	int				dstlen;
+	long				stdoffset;
+	long				dstoffset;
+	register time_t *		atp;
+	register unsigned char *	typep;
+	register char *			cp;
+	register int			load_result;
+
+	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;
+	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 {
+			int		sawstd;
+			int		sawdst;
+			long		stdfix;
+			long		dstfix;
+			long		oldfix;
+			int		isdst;
+			register int	i;
+
+			if (*name != '\0')
+				return -1;
+			if (load_result != 0)
+				return -1;
+			/*
+			** Compute the difference between the real and
+			** prototype standard and summer time offsets
+			** from GMT, and put the real standard and summer
+			** time offsets into the rules in place of the
+			** prototype offsets.
+			*/
+			sawstd = FALSE;
+			sawdst = FALSE;
+			stdfix = 0;
+			dstfix = 0;
+			for (i = 0; i < sp->typecnt; ++i) {
+				if (sp->ttis[i].tt_isdst) {
+					oldfix = dstfix;
+					dstfix =
+					    sp->ttis[i].tt_gmtoff + dstoffset;
+					if (sawdst && (oldfix != dstfix))
+						return -1;
+					sp->ttis[i].tt_gmtoff = -dstoffset;
+					sp->ttis[i].tt_abbrind = stdlen + 1;
+					sawdst = TRUE;
+				} else {
+					oldfix = stdfix;
+					stdfix =
+					    sp->ttis[i].tt_gmtoff + stdoffset;
+					if (sawstd && (oldfix != stdfix))
+						return -1;
+					sp->ttis[i].tt_gmtoff = -stdoffset;
+					sp->ttis[i].tt_abbrind = 0;
+					sawstd = TRUE;
+				}
+			}
+			/*
+			** Make sure we have both standard and summer time.
+			*/
+			if (!sawdst || !sawstd)
+				return -1;
+			/*
+			** Now correct the transition times by shifting
+			** them by the difference between the real and
+			** prototype offsets.  Note that this difference
+			** can be different in standard and summer time;
+			** the prototype probably has a 1-hour difference
+			** between standard and summer time, but a different
+			** difference can be specified in TZ.
+			*/
+			isdst = FALSE;	/* we start in standard time */
+			for (i = 0; i < sp->timecnt; ++i) {
+				register const struct ttinfo *	ttisp;
+
+				/*
+				** 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.
+				*/
+				ttisp = &sp->ttis[sp->types[i]];
+				sp->ats[i] +=
+					(isdst && !ttisp->tt_ttisstd) ?
+						dstfix : stdfix;
+				isdst = ttisp->tt_isdst;
+			}
+		}
+	} 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);
+}
+
+void
+tzset()
+{
+	register const char *	name;
+	void tzsetwall();
+
+	name = getenv("TZ");
+	if (name == NULL) {
+		tzsetwall();
+		return;
+	}
+	lcl_is_set = TRUE;
+#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();
+}
+
+void
+tzsetwall()
+{
+	lcl_is_set = TRUE;
+#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();
+}
+
+/*
+** 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;
+
+	if (!lcl_is_set)
+		tzset();
+	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] = (char *) &sp->chars[ttisp->tt_abbrind];
+	tmp->tm_zone = &sp->chars[ttisp->tt_abbrind];
+}
+
+struct tm *
+localtime(timep)
+const time_t * const	timep;
+{
+	static struct tm	tm;
+
+	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);
+	/*
+	** 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 */
+	}
+}
+
+struct tm *
+gmtime(timep)
+const time_t * const	timep;
+{
+	static struct tm	tm;
+
+	gmtsub(timep, 0L, &tm);
+	return &tm;
+}
+
+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 = FALSE;
+#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);
+			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 /* 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".
+		*/
+		++(tmp->tm_sec);
+	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;
+	tmp->tm_gmtoff = offset;
+}
+
+/*
+** A la X3J11
+*/
+
+char *
+asctime(timeptr)
+register const struct tm *	timeptr;
+{
+	static const char	wday_name[DAYSPERWEEK][3] = {
+		"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+	};
+	static const char	mon_name[MONSPERYEAR][3] = {
+		"Jan", "Feb", "Mar", "Apr", "May", "Jun",
+		"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+	};
+	static char	result[26];
+
+	(void) sprintf(result, "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %d\n",
+		wday_name[timeptr->tm_wday],
+		mon_name[timeptr->tm_mon],
+		timeptr->tm_mday, timeptr->tm_hour,
+		timeptr->tm_min, timeptr->tm_sec,
+		TM_YEAR_BASE + timeptr->tm_year);
+	return result;
+}
+
+char *
+ctime(timep)
+const time_t * const	timep;
+{
+	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 */
+
+static void
+normalize(tensptr, unitsptr, base)
+int * const	tensptr;
+int * const	unitsptr;
+const int	base;
+{
+	if (*unitsptr >= base) {
+		*tensptr += *unitsptr / base;
+		*unitsptr %= base;
+	} else if (*unitsptr < 0) {
+		*tensptr -= 1 + (-(*unitsptr + 1)) / base;
+		*unitsptr = base - 1 - (-(*unitsptr + 1)) % base;
+	}
+}
+
+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)();
+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 (yourtm.tm_sec >= SECSPERMIN + 2 || yourtm.tm_sec < 0)
+		normalize(&yourtm.tm_min, &yourtm.tm_sec, SECSPERMIN);
+	normalize(&yourtm.tm_hour, &yourtm.tm_min, MINSPERHOUR);
+	normalize(&yourtm.tm_mday, &yourtm.tm_hour, HOURSPERDAY);
+	normalize(&yourtm.tm_year, &yourtm.tm_mon, MONSPERYEAR);
+	while (yourtm.tm_mday <= 0) {
+		--yourtm.tm_year;
+		yourtm.tm_mday +=
+			year_lengths[isleap(yourtm.tm_year + TM_YEAR_BASE)];
+	}
+	while (yourtm.tm_mday > DAYSPERLYEAR) {
+		yourtm.tm_mday -=
+		    year_lengths[isleap(yourtm.tm_year + TM_YEAR_BASE)];
+		++yourtm.tm_year;
+	}
+	for ( ; ; ) {
+		i = mon_lengths[isleap(yourtm.tm_year +
+			TM_YEAR_BASE)][yourtm.tm_mon];
+		if (yourtm.tm_mday <= i)
+			break;
+		yourtm.tm_mday -= i;
+		if (++yourtm.tm_mon >= MONSPERYEAR) {
+			yourtm.tm_mon = 0;
+			++yourtm.tm_year;
+		}
+	}
+	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)
+		;
+	/*
+	** 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.
+		*/
+		sp = (const struct state *)
+			((funcp == 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:
+	t += saved_seconds;
+	(*funcp)(&t, offset, tmp);
+	*okayp = TRUE;
+	return t;
+}
+
+static time_t
+time1(tmp, funcp, offset)
+struct tm * const	tmp;
+void (* const		funcp)();
+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);
+	if (okay || tmp->tm_isdst < 0)
+		return t;
+	/*
+	** 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.
+	*/
+	sp = (const struct state *) ((funcp == 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;
+{
+	return time1(tmp, localsub, 0L);
+}
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/difftime.c b/lib/libc/gen/difftime.c
new file mode 100644
index 0000000..3941330
--- /dev/null
+++ b/lib/libc/gen/difftime.c
@@ -0,0 +1,45 @@
+/*
+ * 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[] = "@(#)difftime.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+double
+difftime(time1, time0)
+	time_t time1, time0;
+{
+	return(time1 - time0);
+}
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..cc4c3df
--- /dev/null
+++ b/lib/libc/gen/disklabel.c
@@ -0,0 +1,183 @@
+/*
+ * 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>
+
+static int	error __P((int));
+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);
+}
+
+static int
+error(err)
+	int err;
+{
+	char *p;
+
+	(void)write(STDERR_FILENO, "disktab: ", 9);
+	(void)write(STDERR_FILENO, _PATH_DISKTAB, sizeof(_PATH_DISKTAB) - 1);
+	(void)write(STDERR_FILENO, ": ", 2);
+	p = strerror(err);
+	(void)write(STDERR_FILENO, p, strlen(p));
+	(void)write(STDERR_FILENO, "\n", 1);
+}
diff --git a/lib/libc/gen/err.3 b/lib/libc/gen/err.3
new file mode 100644
index 0000000..2a3f4c3
--- /dev/null
+++ b/lib/libc/gen/err.3
@@ -0,0 +1,128 @@
+.\" 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.
+.\"
+.\"	@(#)err.3	8.1 (Berkeley) 6/9/93
+.\"
+.Dd "June 9, 1993"
+.Dt ERR 3
+.Os BSD 4
+.Sh NAME
+.Nm err ,
+.Nm verr ,
+.Nm errx ,
+.Nm verrx ,
+.Nm warn ,
+.Nm vwarn ,
+.Nm warnx ,
+.Nm vwarnx
+.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"
+.Sh DESCRIPTION
+The
+.Fn err
+and
+.Fn warn
+family of functions display a formatted error message on the standard
+error output.
+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 .
+.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..71cd1d9
--- /dev/null
+++ b/lib/libc/gen/err.c
@@ -0,0 +1,186 @@
+/*-
+ * 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. */
+
+__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;
+	(void)fprintf(stderr, "%s: ", __progname);
+	if (fmt != NULL) {
+		(void)vfprintf(stderr, fmt, ap);
+		(void)fprintf(stderr, ": ");
+	}
+	(void)fprintf(stderr, "%s\n", strerror(sverrno));
+	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;
+{
+	(void)fprintf(stderr, "%s: ", __progname);
+	if (fmt != NULL)
+		(void)vfprintf(stderr, fmt, ap);
+	(void)fprintf(stderr, "\n");
+	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;
+	(void)fprintf(stderr, "%s: ", __progname);
+	if (fmt != NULL) {
+		(void)vfprintf(stderr, fmt, ap);
+		(void)fprintf(stderr, ": ");
+	}
+	(void)fprintf(stderr, "%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;
+{
+	(void)fprintf(stderr, "%s: ", __progname);
+	if (fmt != NULL)
+		(void)vfprintf(stderr, fmt, ap);
+	(void)fprintf(stderr, "\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..2f7eadd
--- /dev/null
+++ b/lib/libc/gen/exec.c
@@ -0,0 +1,271 @@
+/*-
+ * 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;
+{
+	static int memsize;
+	static char **argv;
+	register int off;
+
+	argv = NULL;
+	for (off = 0;; ++off) {
+		if (off >= memsize) {
+			memsize += 50;	/* Starts out at 0. */
+			memsize *= 2;	/* Ramp up fast. */
+			if (!(argv = realloc(argv, memsize * sizeof(char *)))) {
+				memsize = 0;
+				return (NULL);
+			}
+			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;
+{
+	static int memsize;
+	static 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);
+			if ((cnt + 2) * sizeof(char *) > memsize) {
+				memsize = (cnt + 2) * sizeof(char *);
+				if ((memp = realloc(memp, memsize)) == NULL) {
+					memsize = 0;
+					goto done;
+				}
+			}
+			memp[0] = "sh";
+			memp[1] = bp;
+			bcopy(argv + 1, memp + 2, cnt * sizeof(char *));
+			(void)execve(_PATH_BSHELL, memp, environ);
+			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..dc7f151
--- /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..48e5352
--- /dev/null
+++ b/lib/libc/gen/fstab.c
@@ -0,0 +1,202 @@
+/*
+ * 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 error __P((int));
+static fstabscan __P((void));
+
+static
+fstabscan()
+{
+	register char *cp;
+#define	MAXLINELENGTH	1024
+	static char line[MAXLINELENGTH];
+	char subline[MAXLINELENGTH];
+	int typexx;
+
+	for (;;) {
+		if (!(cp = fgets(line, sizeof(line), _fs_fp)))
+			return(0);
+/* OLD_STYLE_FSTAB */
+		if (!strpbrk(cp, " \t")) {
+			_fs_fstab.fs_spec = strtok(cp, ":\n");
+			_fs_fstab.fs_file = strtok((char *)NULL, ":\n");
+			_fs_fstab.fs_type = strtok((char *)NULL, ":\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 = strtok((char *)NULL, ":\n")) {
+					_fs_fstab.fs_freq = atoi(cp);
+					if (cp = strtok((char *)NULL, ":\n")) {
+						_fs_fstab.fs_passno = atoi(cp);
+						return(1);
+					}
+				}
+			}
+			goto bad;
+		}
+/* OLD_STYLE_FSTAB */
+		_fs_fstab.fs_spec = strtok(cp, " \t\n");
+		if (!_fs_fstab.fs_spec || *_fs_fstab.fs_spec == '#')
+			continue;
+		_fs_fstab.fs_file = strtok((char *)NULL, " \t\n");
+		_fs_fstab.fs_vfstype = strtok((char *)NULL, " \t\n");
+		_fs_fstab.fs_mntops = strtok((char *)NULL, " \t\n");
+		if (_fs_fstab.fs_mntops == NULL)
+			goto bad;
+		_fs_fstab.fs_freq = 0;
+		_fs_fstab.fs_passno = 0;
+		if ((cp = strtok((char *)NULL, " \t\n")) != NULL) {
+			_fs_fstab.fs_freq = atoi(cp);
+			if ((cp = strtok((char *)NULL, " \t\n")) != NULL)
+				_fs_fstab.fs_passno = atoi(cp);
+		}
+		strcpy(subline, _fs_fstab.fs_mntops);
+		for (typexx = 0, cp = strtok(subline, ","); cp;
+		     cp = strtok((char *)NULL, ",")) {
+			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);
+}
+
+setfsent()
+{
+	if (_fs_fp) {
+		rewind(_fs_fp);
+		return(1);
+	}
+	if (_fs_fp = fopen(_PATH_FSTAB, "r"))
+		return(1);
+	error(errno);
+	return(0);
+}
+
+void
+endfsent()
+{
+	if (_fs_fp) {
+		(void)fclose(_fs_fp);
+		_fs_fp = NULL;
+	}
+}
+
+static
+error(err)
+	int err;
+{
+	char *p;
+
+	(void)write(STDERR_FILENO, "fstab: ", 7);
+	(void)write(STDERR_FILENO, _PATH_FSTAB, sizeof(_PATH_FSTAB) - 1);
+	(void)write(STDERR_FILENO, ": ", 1);
+	p = strerror(err);
+	(void)write(STDERR_FILENO, p, strlen(p));
+	(void)write(STDERR_FILENO, "\n", 1);
+}
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/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..2a81a35
--- /dev/null
+++ b/lib/libc/gen/getcap.c
@@ -0,0 +1,1048 @@
+/*-
+ * 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;
+	DBT key, data;
+	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;
+	char *buf;
+	int st;
+
+	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 */
+			*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..b66aa1c
--- /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 <stdio.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..4797f7c
--- /dev/null
+++ b/lib/libc/gen/getcwd.c
@@ -0,0 +1,230 @@
+/*
+ * 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);
+		}
+		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.
+			 */
+			(void)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;
+			(void)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/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..e0e2782
--- /dev/null
+++ b/lib/libc/gen/getgrent.3
@@ -0,0 +1,192 @@
+.\" 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.
+.\"
+.\"     @(#)getgrent.3	8.2 (Berkeley) 4/19/94
+.\"
+.Dd April 19, 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 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
+.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.
+.Pp
+The functions
+.Fn getgrent ,
+.Fn endgrent ,
+.Fn setgroupent ,
+and
+.Fn setgrent
+are fairly useless in a networked environment and should be
+avoided, if possible.
diff --git a/lib/libc/gen/getgrent.c b/lib/libc/gen/getgrent.c
new file mode 100644
index 0000000..102546a
--- /dev/null
+++ b/lib/libc/gen/getgrent.c
@@ -0,0 +1,181 @@
+/*
+ * 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 <grp.h>
+
+static FILE *_gr_fp;
+static struct group _gr_group;
+static int _gr_stayopen;
+static int grscan(), start_gr();
+
+#define	MAXGRP		200
+static char *members[MAXGRP];
+#define	MAXLINELENGTH	1024
+static char line[MAXLINELENGTH];
+
+struct group *
+getgrent()
+{
+	if (!_gr_fp && !start_gr() || !grscan(0, 0, NULL))
+		return(NULL);
+	return(&_gr_group);
+}
+
+struct group *
+getgrnam(name)
+	const char *name;
+{
+	int rval;
+
+	if (!start_gr())
+		return(NULL);
+	rval = grscan(1, 0, name);
+	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);
+	rval = grscan(1, gid, NULL);
+	if (!_gr_stayopen)
+		endgrent();
+	return(rval ? &_gr_group : NULL);
+}
+
+static
+start_gr()
+{
+	if (_gr_fp) {
+		rewind(_gr_fp);
+		return(1);
+	}
+	return((_gr_fp = fopen(_PATH_GROUP, "r")) ? 1 : 0);
+}
+
+int
+setgrent()
+{
+	return(setgroupent(0));
+}
+
+int
+setgroupent(stayopen)
+	int stayopen;
+{
+	if (!start_gr())
+		return(0);
+	_gr_stayopen = stayopen;
+	return(1);
+}
+
+void
+endgrent()
+{
+	if (_gr_fp) {
+		(void)fclose(_gr_fp);
+		_gr_fp = NULL;
+	}
+}
+
+static
+grscan(search, gid, name)
+	register int search, gid;
+	register char *name;
+{
+	register char *cp, **m;
+	char *bp;
+	char *fgets(), *strsep(), *index();
+
+	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;
+		}
+		_gr_group.gr_name = strsep(&bp, ":\n");
+		if (search && name && strcmp(_gr_group.gr_name, name))
+			continue;
+		_gr_group.gr_passwd = strsep(&bp, ":\n");
+		if (!(cp = strsep(&bp, ":\n")))
+			continue;
+		_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 */
+}
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..34ab4ea
--- /dev/null
+++ b/lib/libc/gen/getgrouplist.c
@@ -0,0 +1,89 @@
+/*
+ * 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 struct passwd *pw;
+	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()) {
+		if (grp->gr_gid == agroup)
+			continue;
+		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;
+			}
+		}
+	}
+	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..cc70c96
--- /dev/null
+++ b/lib/libc/gen/getnetgrent.c
@@ -0,0 +1,339 @@
+/*
+ * 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>
+
+#define _PATH_NETGROUP "/etc/netgroup"
+
+/*
+ * 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;
+{
+
+	if (grouphead.gr == (struct netgrp *)0 ||
+		strcmp(group, grouphead.grname)) {
+		endnetgrent();
+		if (netf = fopen(_PATH_NETGROUP, "r")) {
+			if (parse_netgrp(group))
+				endnetgrent();
+			else {
+				grouphead.grname = (char *)
+					malloc(strlen(group) + 1);
+				strcpy(grouphead.grname, group);
+			}
+			fclose(netf);
+		}
+	}
+	nextgrp = grouphead.gr;
+}
+
+/*
+ * Get the next netgroup off the list.
+ */
+int
+getnetgrent(hostp, userp, domp)
+	char **hostp, **userp, **domp;
+{
+
+	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;
+}
+
+/*
+ * Search for a match in a netgroup.
+ */
+int
+innetgr(group, host, user, dom)
+	char *group, *host, *user, *dom;
+{
+	char *hst, *usr, *dm;
+
+	setnetgrent(group);
+	while (getnetgrent(&hst, &usr, &dm))
+		if ((host == (char *)0 || !strcmp(host, hst)) &&
+		    (user == (char *)0 || !strcmp(user, usr)) &&
+		    (dom == (char *)0 || !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;
+	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) {
+		fprintf(stderr, "Cycle in netgroup %s\n", lp->l_groupname);
+		return (1);
+	} else
+		lp->l_parsed = 1;
+	pos = lp->l_line;
+	while (*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, ")");
+			for (strpos = 0; strpos < 3; strpos++) {
+				if (spos = strsep(&gpos, ",")) {
+					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
+					goto errout;
+			}
+		} else {
+			spos = strsep(&pos, ", \t");
+			if (parse_netgrp(spos))
+				return (1);
+		}
+		while (*pos == ' ' || *pos == ',' || *pos == '\t')
+			pos++;
+	}
+	return (0);
+errout:
+	fprintf(stderr, "Bad netgroup %s at ..%s\n", lp->l_groupname,
+		spos);
+	return (1);
+}
+
+/*
+ * 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];
+
+	while (fgets(line, LINSIZ, netf) != NULL) {
+		pos = line;
+		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);
+		}
+	}
+	return ((struct linelist *)0);
+}
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..34e91cb
--- /dev/null
+++ b/lib/libc/gen/getpass.3
@@ -0,0 +1,88 @@
+.\" 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.
diff --git a/lib/libc/gen/getpass.c b/lib/libc/gen/getpass.c
new file mode 100644
index 0000000..f6391a1
--- /dev/null
+++ b/lib/libc/gen/getpass.c
@@ -0,0 +1,91 @@
+/*
+ * 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 <sys/signal.h>
+
+#include <paths.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <unistd.h>
+
+char *
+getpass(prompt)
+	const char *prompt;
+{
+	struct termios term;
+	register int ch;
+	register char *p;
+	FILE *fp, *outfp;
+	long omask;
+	int echo;
+	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;
+	}
+	/*
+	 * note - blocking signals isn't necessarily the
+	 * right thing, but we leave it for now.
+	 */
+	omask = sigblock(sigmask(SIGINT)|sigmask(SIGTSTP));
+	(void)tcgetattr(fileno(fp), &term);
+	if (echo = (term.c_lflag & ECHO)) {
+		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);
+	if (echo) {
+		term.c_lflag |= ECHO;
+		(void)tcsetattr(fileno(fp), TCSAFLUSH|TCSASOFT, &term);
+	}
+	(void)sigsetmask(omask);
+	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..1208f53
--- /dev/null
+++ b/lib/libc/gen/getpwent.3
@@ -0,0 +1,207 @@
+.\" 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.
+.\"
+.\"     @(#)getpwent.3	8.2 (Berkeley) 12/11/93
+.\"
+.Dd December 11, 1993
+.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 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
+.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 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.
+.Pp
+The routines
+.Fn getpwent ,
+.Fn endpwent ,
+.Fn setpassent ,
+and
+.Fn setpwent
+are fairly useless in a networked environment and should be
+avoided, if possible.
+.Sh COMPATIBILITY
+The historic function
+.Xr setpwfile 3 ,
+which allowed the specification of alternate password databases,
+has been deprecated and is no longer available.
diff --git a/lib/libc/gen/getpwent.c b/lib/libc/gen/getpwent.c
new file mode 100644
index 0000000..1da045e
--- /dev/null
+++ b/lib/libc/gen/getpwent.c
@@ -0,0 +1,201 @@
+/*
+ * 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 <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>
+
+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 */
+static int __hashpw(), __initdb();
+
+struct passwd *
+getpwent()
+{
+	DBT key;
+	char bf[sizeof(_pw_keynum) + 1];
+
+	if (!_pw_db && !__initdb())
+		return((struct passwd *)NULL);
+
+	++_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;
+	return(__hashpw(&key) ? &_pw_passwd : (struct passwd *)NULL);
+}
+
+struct passwd *
+getpwnam(name)
+	const char *name;
+{
+	DBT key;
+	int len, rval;
+	char bf[UT_NAMESIZE + 1];
+
+	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);
+
+	if (!_pw_stayopen) {
+		(void)(_pw_db->close)(_pw_db);
+		_pw_db = (DB *)NULL;
+	}
+	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);
+
+	if (!_pw_stayopen) {
+		(void)(_pw_db->close)(_pw_db);
+		_pw_db = (DB *)NULL;
+	}
+	return(rval ? &_pw_passwd : (struct passwd *)NULL);
+}
+
+int
+setpassent(stayopen)
+	int stayopen;
+{
+	_pw_keynum = 0;
+	_pw_stayopen = stayopen;
+	return(1);
+}
+
+int
+setpwent()
+{
+	_pw_keynum = 0;
+	_pw_stayopen = 0;
+	return(1);
+}
+
+void
+endpwent()
+{
+	_pw_keynum = 0;
+	if (_pw_db) {
+		(void)(_pw_db->close)(_pw_db);
+		_pw_db = (DB *)NULL;
+	}
+}
+
+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)
+		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);
+	return(1);
+}
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..f9b1e0d
--- /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) {
+		(void)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..2bcdaf7
--- /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/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..8c8e162
--- /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..d427539
--- /dev/null
+++ b/lib/libc/gen/initgroups.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[] = "@(#)initgroups.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+
+#include <stdio.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/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/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/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..874f26e
--- /dev/null
+++ b/lib/libc/gen/nlist.c
@@ -0,0 +1,149 @@
+/*
+ * 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, *s;
+	register caddr_t strtab;
+	register off_t stroff, symoff;
+	register u_long symsize;
+	register int nent, cc;
+	size_t strsize;
+	struct nlist nbuf[1024];
+	struct exec exec;
+	struct stat st;
+
+	if (lseek(fd, (off_t)0, SEEK_SET) == -1 ||
+	    read(fd, &exec, sizeof(exec)) != sizeof(exec) ||
+	    N_BADMAG(exec) || fstat(fd, &st) < 0)
+		return (-1);
+
+	symoff = N_SYMOFF(exec);
+	symsize = exec.a_syms;
+	stroff = symoff + symsize;
+
+	/* Check for files too large to mmap. */
+	if (st.st_size - stroff > SIZE_T_MAX) {
+		errno = EFBIG;
+		return (-1);
+	}
+	/*
+	 * Map string table into our address space.  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).
+	 */
+	strsize = st.st_size - stroff;
+	strtab = mmap(NULL, (size_t)strsize, PROT_READ, 0, fd, stroff);
+	if (strtab == (char *)-1)
+		return (-1);
+	/*
+	 * 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;
+	}
+	if (lseek(fd, symoff, SEEK_SET) == -1)
+		return (-1);
+
+	while (symsize > 0) {
+		cc = MIN(symsize, sizeof(nbuf));
+		if (read(fd, nbuf, cc) != cc)
+			break;
+		symsize -= cc;
+		for (s = nbuf; cc > 0; ++s, cc -= sizeof(*s)) {
+			register int soff = s->n_un.n_strx;
+
+			if (soff == 0 || (s->n_type & N_STAB) != 0)
+				continue;
+			for (p = list; !ISLAST(p); p++)
+				if (!strcmp(&strtab[soff], p->n_un.n_name)) {
+					p->n_value = s->n_value;
+					p->n_type = s->n_type;
+					p->n_desc = s->n_desc;
+					p->n_other = s->n_other;
+					if (--nent <= 0)
+						break;
+				}
+		}
+	}
+	munmap(strtab, strsize);
+	return (nent);
+}
diff --git a/lib/libc/gen/opendir.c b/lib/libc/gen/opendir.c
new file mode 100644
index 0000000..83e041d
--- /dev/null
+++ b/lib/libc/gen/opendir.c
@@ -0,0 +1,87 @@
+/*
+ * 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 <dirent.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;
+
+	if ((fd = open(name, 0)) == -1)
+		return NULL;
+	if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1 ||
+	    (dirp = (DIR *)malloc(sizeof(DIR))) == NULL) {
+		close (fd);
+		return NULL;
+	}
+	/*
+	 * 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) {
+		close (fd);
+		return NULL;
+	}
+	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;
+}
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..89aba16
--- /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) {
+		(void)free(cur);
+		return (NULL);
+	}
+
+	switch (pid = vfork()) {
+	case -1:			/* Error. */
+		(void)close(pdes[0]);
+		(void)close(pdes[1]);
+		(void)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..51491b4
--- /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 <sys/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/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..1dcbf5d
--- /dev/null
+++ b/lib/libc/gen/pwcache.c
@@ -0,0 +1,112 @@
+/*
+ * 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 <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/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..1c1fee1
--- /dev/null
+++ b/lib/libc/gen/scandir.c
@@ -0,0 +1,135 @@
+/*
+ * 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_ino = d->d_ino;
+		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/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/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..b73ea08
--- /dev/null
+++ b/lib/libc/gen/setmode.3
@@ -0,0 +1,104 @@
+.\" 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
+.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..84cadcb
--- /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 int	 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, 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 int
+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/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..e17c2df
--- /dev/null
+++ b/lib/libc/gen/signal.3
@@ -0,0 +1,221 @@
+.\" 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
+.Fn *signal sig func\*(lp\*(rp
+.Ft void
+.\" can not do this with .Fn yet
+.br
+\*(lp\|\*(fN*func\*(rp\*(lp\|\*(rp\fR
+.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/sigsetjmp.c b/lib/libc/gen/sigsetjmp.c
new file mode 100644
index 0000000..ca960a6
--- /dev/null
+++ b/lib/libc/gen/sigsetjmp.c
@@ -0,0 +1,61 @@
+/*
+ * 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[] = "@(#)sigsetjmp.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <setjmp.h>
+
+int
+sigsetjmp(jmpbuf, savemask)
+	sigjmp_buf	jmpbuf;
+	int		savemask;
+{
+
+	jmpbuf[_JBLEN] = savemask;
+	if (savemask)
+		return (setjmp(jmpbuf));
+	return (_setjmp(jmpbuf));
+}
+
+void
+siglongjmp(jmpbuf, retval)
+	sigjmp_buf	jmpbuf;
+	int		retval;
+{
+
+	if (jmpbuf[_JBLEN])
+		return (longjmp(jmpbuf, retval));
+	return (_longjmp(jmpbuf, retval));
+}
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..3c0b8fa
--- /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 <sys/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/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..12d6f58
--- /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/sysctl.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+
+#include <errno.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 clockinfo clk;
+	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..602b559
--- /dev/null
+++ b/lib/libc/gen/sysctl.3
@@ -0,0 +1,650 @@
+.\" 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
+.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..f67a533
--- /dev/null
+++ b/lib/libc/gen/sysctl.c
@@ -0,0 +1,177 @@
+/*-
+ * 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>
+
+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..ba82e23
--- /dev/null
+++ b/lib/libc/gen/syslog.c
@@ -0,0 +1,235 @@
+/*
+ * 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[] = "@(#)syslog.c	8.4 (Berkeley) 3/18/94";
+#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. */
+
+/*
+ * 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, *t;
+	time_t now;
+	int fd, saved_errno;
+	char *stdp, tbuf[2048], fmt_cpy[1024];
+
+#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;
+
+	/* Build the message. */
+	(void)time(&now);
+	p = tbuf + sprintf(tbuf, "<%d>", pri);
+	p += strftime(p, sizeof (tbuf) - (p - tbuf), "%h %e %T ",
+	    localtime(&now));
+	if (LogStat & LOG_PERROR)
+		stdp = p;
+	if (LogTag == NULL)
+		LogTag = __progname;
+	if (LogTag != NULL)
+		p += sprintf(p, "%s", LogTag);
+	if (LogStat & LOG_PID)
+		p += sprintf(p, "[%d]", getpid());
+	if (LogTag != NULL) {
+		*p++ = ':';
+		*p++ = ' ';
+	}
+
+	/* Substitute error message for %m. */
+	for (t = fmt_cpy; ch = *fmt; ++fmt)
+		if (ch == '%' && fmt[1] == 'm') {
+			++fmt;
+			t += sprintf(t, "%s", strerror(saved_errno));
+		} else
+			*t++ = ch;
+	*t = '\0';
+
+	p += vsprintf(p, fmt_cpy, ap);
+	cnt = p - tbuf;
+
+	/* 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) {
+		(void)strcat(tbuf, "\r\n");
+		cnt += 2;
+		p = index(tbuf, '>') + 1;
+		(void)write(fd, p, cnt - (p - tbuf));
+		(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..979fee4
--- /dev/null
+++ b/lib/libc/gen/telldir.c
@@ -0,0 +1,128 @@
+/*
+ * 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 */
+};
+
+#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_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
+}
diff --git a/lib/libc/gen/termios.c b/lib/libc/gen/termios.c
new file mode 100644
index 0000000..a99d86f
--- /dev/null
+++ b/lib/libc/gen/termios.c
@@ -0,0 +1,242 @@
+/*-
+ * 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/ioctl.h>
+#include <sys/tty.h>
+#include <sys/time.h>
+#define KERNEL			/* XXX - FREAD and FWRITE ifdef'd KERNEL*/
+#include <sys/fcntl.h>
+#undef KERNEL
+
+#include <errno.h>
+#include <stdio.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 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 &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
+	t->c_oflag &= ~OPOST;
+	t->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
+	t->c_cflag &= ~(CSIZE|PARENB);
+	t->c_cflag |= CS8;
+	/* XXX set MIN/TIME */
+}
+
+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);
+}
+
+tcdrain(fd)
+	int fd;
+{
+
+	return (ioctl(fd, TIOCDRAIN, 0));
+}
+
+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));
+}
+
+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..1343836
--- /dev/null
+++ b/lib/libc/gen/time.3
@@ -0,0 +1,85 @@
+.\" 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>
+.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..9ce6142
--- /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>
+#include <tzfile.h>
+
+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..2f47bd6
--- /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 <sgtty.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 sgttyb ttyb;
+	DB *db;
+	DBT data, key;
+	struct {
+		mode_t type;
+		dev_t dev;
+	} bkey;
+
+	/* Must be a terminal. */
+	if (ioctl(fd, TIOCGETP, &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..3d9fee6
--- /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..e9e051d
--- /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..9857b29
--- /dev/null
+++ b/lib/libc/gen/uname.c
@@ -0,0 +1,90 @@
+/*-
+ * 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[] = "@(#)uname.c	8.1 (Berkeley) 1/4/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/utsname.h>
+
+int
+uname(name)
+	struct utsname *name;
+{
+	int mib[2], rval;
+	size_t len;
+	char *p;
+
+	rval = 0;
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_OSTYPE;
+	len = sizeof(name->sysname);
+	if (sysctl(mib, 2, &name->sysname, &len, NULL, 0) == -1)
+		rval = -1;
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_HOSTNAME;
+	len = sizeof(name->nodename);
+	if (sysctl(mib, 2, &name->nodename, &len, NULL, 0) == -1)
+		rval = -1;
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_OSRELEASE;
+	len = sizeof(name->release);
+	if (sysctl(mib, 2, &name->release, &len, NULL, 0) == -1)
+		rval = -1;
+
+	/* The version may have newlines in it, turn them into spaces. */
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_VERSION;
+	len = sizeof(name->version);
+	if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1)
+		rval = -1;
+	else
+		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);
+	if (sysctl(mib, 2, &name->machine, &len, NULL, 0) == -1)
+		rval = -1;
+	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..6126d6a
--- /dev/null
+++ b/lib/libc/gen/unvis.c
@@ -0,0 +1,248 @@
+/*-
+ * 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 <ctype.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..9127bfc
--- /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 <sys/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..2232149
--- /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 ((u_int)c <= UCHAR_MAX && 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));
+}