- Add getdelim(), getline(), stpncpy(), strnlen(), wcsnlen(),

  wcscasecmp(), and wcsncasecmp().
- Make some previously non-standard extensions visible
  if POSIX_VISIBLE >= 200809.
- Use restrict qualifiers in stpcpy().
- Declare off_t and size_t in stdio.h.
- Bump __FreeBSD_version in case the new symbols (particularly
  getline()) cause issues with ports.

Reviewed by:	standards@

18 files changed, 689 insertions, 26 deletions

diff --git a/lib/libc/stdio/Makefile.inc b/lib/libc/stdio/Makefile.inc
index fc106db..2ed62f5 100644
--- a/lib/libc/stdio/Makefile.inc
+++ b/lib/libc/stdio/Makefile.inc
@@ -10,8 +10,8 @@ SRCS+=	_flock_stub.c asprintf.c clrerr.c fclose.c fcloseall.c fdopen.c \
 	fileno.c findfp.c flags.c fopen.c fprintf.c fpurge.c fputc.c fputs.c \
 	fputwc.c fputws.c fread.c freopen.c fscanf.c fseek.c fsetpos.c \
 	ftell.c funopen.c fvwrite.c fwalk.c fwide.c fwprintf.c fwscanf.c \
-	fwrite.c getc.c \
-	getchar.c gets.c getw.c getwc.c getwchar.c makebuf.c mktemp.c \
+	fwrite.c getc.c getchar.c getdelim.c getline.c \
+	gets.c getw.c getwc.c getwchar.c makebuf.c mktemp.c \
 	perror.c printf.c printf-pos.c putc.c putchar.c \
 	puts.c putw.c putwc.c putwchar.c \
 	refill.c remove.c rewind.c rget.c scanf.c setbuf.c setbuffer.c \
@@ -33,7 +33,8 @@ SYM_MAPS+=	${.CURDIR}/stdio/Symbol.map
 MAN+=	fclose.3 ferror.3 fflush.3 fgetln.3 fgets.3 fgetwln.3 fgetws.3 \
 	flockfile.3 \
 	fopen.3 fputs.3 \
-	fputws.3 fread.3 fseek.3 funopen.3 fwide.3 getc.3 getwc.3 mktemp.3 \
+	fputws.3 fread.3 fseek.3 funopen.3 fwide.3 getc.3 \
+	getline.3 getwc.3 mktemp.3 \
 	printf.3 putc.3 putwc.3 remove.3 scanf.3 setbuf.3 stdio.3 tmpnam.3 \
 	ungetc.3 ungetwc.3 wprintf.3 wscanf.3
 
@@ -53,6 +54,7 @@ MLINKS+=fseek.3 fgetpos.3 fseek.3 fseeko.3 fseek.3 fsetpos.3 fseek.3 ftell.3 \
 MLINKS+=funopen.3 fropen.3 funopen.3 fwopen.3
 MLINKS+=getc.3 fgetc.3 getc.3 getc_unlocked.3 getc.3 getchar.3 \
 	getc.3 getchar_unlocked.3 getc.3 getw.3
+MLINKS+=getline.3 getdelim.3
 MLINKS+=getwc.3 fgetwc.3 getwc.3 getwchar.3
 MLINKS+=mktemp.3 mkdtemp.3 mktemp.3 mkstemp.3 mktemp.3 mkstemps.3
 MLINKS+=printf.3 asprintf.3 printf.3 fprintf.3 \
diff --git a/lib/libc/stdio/Symbol.map b/lib/libc/stdio/Symbol.map
index ac93cb2..bf054b6 100644
--- a/lib/libc/stdio/Symbol.map
+++ b/lib/libc/stdio/Symbol.map
@@ -110,6 +110,11 @@ FBSD_1.0 {
 	wscanf;
 };
 
+FBSD_1.1 {
+	 getdelim;
+	 getline;
+};
+
 FBSDprivate_1.0 {
 	_flockfile;
 	_flockfile_debug_stub;
diff --git a/lib/libc/stdio/fgetln.3 b/lib/libc/stdio/fgetln.3
index b95c61e..4b83664 100644
--- a/lib/libc/stdio/fgetln.3
+++ b/lib/libc/stdio/fgetln.3
@@ -116,6 +116,7 @@ or
 .Xr fgets 3 ,
 .Xr fgetwln 3 ,
 .Xr fopen 3 ,
+.Xr getline 3 ,
 .Xr putc 3
 .Sh HISTORY
 The
diff --git a/lib/libc/stdio/fgets.3 b/lib/libc/stdio/fgets.3
index cd74fcc..aa8e2ac 100644
--- a/lib/libc/stdio/fgets.3
+++ b/lib/libc/stdio/fgets.3
@@ -147,7 +147,8 @@ the FSA.)
 .Xr feof 3 ,
 .Xr ferror 3 ,
 .Xr fgetln 3 ,
-.Xr fgetws 3
+.Xr fgetws 3 ,
+.Xr getline 3
 .Sh STANDARDS
 The functions
 .Fn fgets
diff --git a/lib/libc/stdio/getdelim.c b/lib/libc/stdio/getdelim.c
new file mode 100644
index 0000000..fb02889
--- /dev/null
+++ b/lib/libc/stdio/getdelim.c
@@ -0,0 +1,158 @@
+/*-
+ * Copyright (c) 2009 David Schultz <das@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "namespace.h"
+#include <sys/param.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "un-namespace.h"
+
+#include "libc_private.h"
+#include "local.h"
+
+static inline size_t
+p2roundup(size_t n)
+{
+
+	if (!powerof2(n)) {
+		n--;
+		n |= n >> 1;
+		n |= n >> 2;
+		n |= n >> 4;
+		n |= n >> 8;
+		n |= n >> 16;
+#if SIZE_T_MAX > 0xffffffffU
+		n |= n >> 32;
+#endif
+		n++;
+	}
+	return (n);
+}
+
+/*
+ * Expand *linep to hold len bytes (up to SSIZE_MAX + 1).
+ */
+static inline int
+expandtofit(char ** __restrict linep, size_t len, size_t * __restrict capp)
+{
+	char *newline;
+	size_t newcap;
+
+	if (len > (size_t)SSIZE_MAX + 1) {
+		errno = EOVERFLOW;
+		return (-1);
+	}
+	if (len > *capp) {
+		if (len == (size_t)SSIZE_MAX + 1)	/* avoid overflow */
+			newcap = (size_t)SSIZE_MAX + 1;
+		else
+			newcap = p2roundup(len);
+		newline = realloc(*linep, newcap);
+		if (newline == NULL)
+			return (-1);
+		*capp = newcap;
+		*linep = newline;
+	}
+	return (0);
+}
+
+/*
+ * Append the src buffer to the *dstp buffer. The buffers are of
+ * length srclen and *dstlenp, respectively, and dst has space for
+ * *dstlenp bytes. After the call, *dstlenp and *dstcapp are updated
+ * appropriately, and *dstp is reallocated if needed. Returns 0 on
+ * success, -1 on allocation failure.
+ */
+static int
+sappend(char ** __restrict dstp, size_t * __restrict dstlenp,
+	size_t * __restrict dstcapp, char * __restrict src, size_t srclen)
+{
+
+	/* ensure room for srclen + dstlen + terminating NUL */
+	if (expandtofit(dstp, srclen + *dstlenp + 1, dstcapp))
+		return (-1);
+	memcpy(*dstp + *dstlenp, src, srclen);
+	*dstlenp += srclen;
+	return (0);
+}
+
+ssize_t
+getdelim(char ** __restrict linep, size_t * __restrict linecapp, int delim,
+	 FILE * __restrict fp)
+{
+	u_char *endp;
+	size_t linelen;
+
+	FLOCKFILE(fp);
+	ORIENT(fp, -1);
+
+	if (linep == NULL || linecapp == NULL) {
+		errno = EINVAL;
+		goto error;
+	}
+
+	linelen = 0;
+	if (*linecapp == 0)
+		*linep = NULL;
+
+	if (fp->_r <= 0 && __srefill(fp)) {
+		/* If fp is at EOF already, we just need space for the NUL. */
+		if (__sferror(fp) || expandtofit(linep, 1, linecapp))
+			goto error;
+		goto done;
+	}
+
+	while ((endp = memchr(fp->_p, delim, fp->_r)) == NULL) {
+		if (sappend(linep, &linelen, linecapp, fp->_p, fp->_r))
+			goto error;
+		if (__srefill(fp)) {
+			if (__sferror(fp))
+				goto error;
+			goto done;	/* hit EOF */
+		}
+	}
+	endp++;	/* snarf the delimiter, too */
+	if (sappend(linep, &linelen, linecapp, fp->_p, endp - fp->_p))
+		goto error;
+	fp->_r -= endp - fp->_p;
+	fp->_p = endp;
+done:
+	/* Invariant: *linep has space for at least linelen+1 bytes. */
+	(*linep)[linelen] = '\0';
+	FUNLOCKFILE(fp);
+	return (linelen);
+
+error:
+	fp->_flags |= __SERR;
+	FUNLOCKFILE(fp);
+	return (-1);
+}
diff --git a/lib/libc/stdio/getline.3 b/lib/libc/stdio/getline.3
new file mode 100644
index 0000000..096331a
--- /dev/null
+++ b/lib/libc/stdio/getline.3
@@ -0,0 +1,164 @@
+.\" Copyright (c) 2009 David Schultz <das@FreeBSD.org>
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd February 28, 2009
+.Dt GETLINE 3
+.Os
+.Sh NAME
+.Nm getdelim ,
+.Nm getline
+.Nd get a line from a stream
+.Sh LIBRARY
+.Lb libc
+.Sh SYNOPSIS
+.Fd "#define _WITH_GETLINE"
+.In stdio.h
+.Ft ssize_t
+.Fn getdelim "char ** restrict linep" "size_t * restrict linecapp" "int delimiter" " FILE * restrict stream"
+.Ft ssize_t
+.Fn getline "char ** restrict linep" "size_t * restrict linecapp" " FILE * restrict stream"
+.Sh DESCRIPTION
+The
+.Fn getdelim
+function reads a line from
+.Fa stream ,
+delimited by the character
+.Fa delimiter .
+The
+.Fn getline
+function is equivalent to
+.Fn getdelim
+with the newline character as the delimiter.
+The delimiter character is included as part of the line, unless
+the end of the file is reached.
+The caller may provide a pointer to a malloc buffer for the line in
+.Fa *linep ,
+and the capacity of that buffer in
+.Fa *linecapp ;
+if
+.Fa *linecapp
+is 0, then
+.Fa *linep
+is treated as
+.Dv NULL .
+These functions may expand the buffer as needed, as if via
+.Fn realloc ,
+and update
+.Fa *linep
+and
+.Fa *linecapp
+accordingly.
+.Sh RETURN VALUES
+The
+.Fn getdelim
+and
+.Fn getline
+functions return the number of characters written, excluding the
+terminating
+.Dv NUL .
+The value \-1 is returned if an error occurs.
+.Sh EXAMPLES
+The following code fragment reads lines from a file and
+writes them to standard output.
+The
+.Fn fwrite
+function is used in case the line contains embedded
+.Dv NUL
+characters.
+.Bd -literal -offset indent
+char *line = NULL;
+size_t linecap = 0;
+ssize_t linelen;
+while ((linelen = getline(&line, &linecap, fp)) > 0)
+	fwrite(line, linelen, 1, stdout);
+.Ed
+.Sh COMPATIBILITY
+Many application writers used the name
+.Va getline
+before the
+.Fn getline
+function was introduced in
+.St -p1003.1 ,
+so a prototype is not provided by default in order to avoid
+compatibility problems.
+Applications that wish to use the
+.Fn getline
+function described herein should either request a strict
+.St -p1003.1-2008
+environment by defining the macro
+.Dv _POSIX_C_SOURCE
+to the value 200809 or greater, or by defining the macro
+.Dv _WITH_GETLINE ,
+prior to the inclusion of
+.In stdio.h .
+For compatibility with GNU libc, defining either
+.Dv _BSD_SOURCE
+or
+.Dv _GNU_SOURCE
+prior to the inclusion of
+.In stdio.h
+will also make
+.Fn getline
+available.
+.Sh ERRORS
+These functions may fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+Either
+.Fa linep
+or
+.Fa linecapp
+is
+.Dv NULL .
+.It Bq Er EOVERFLOW
+No delimiter was found in the first
+.Dv SSIZE_MAX
+characters.
+.El
+.Pp
+These functions may also fail for any of the errors specified for
+.Fn fgets
+and
+.Fn malloc .
+.Sh SEE ALSO
+.Xr fgetln 3 ,
+.Xr fgets 3 ,
+.Xr malloc 3
+.Sh STANDARDS
+The
+.Fn getdelim
+and
+.Fn getline
+functions conform to
+.St -p1003.1-2008 .
+.Sh HISTORY
+These routines first appeared in
+.Fx 8.0 .
+.Sh BUGS
+There are no wide character versions of
+.Fn getdelim
+or
+.Fn getline .
diff --git a/lib/libc/stdio/getline.c b/lib/libc/stdio/getline.c
new file mode 100644
index 0000000..3f35520
--- /dev/null
+++ b/lib/libc/stdio/getline.c
@@ -0,0 +1,39 @@
+/*-
+ * Copyright (c) 2009 David Schultz <das@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#define	_WITH_GETLINE
+#include <stdio.h>
+
+ssize_t
+getline(char ** __restrict linep, size_t * __restrict linecapp,
+	FILE * __restrict fp)
+{
+
+	return (getdelim(linep, linecapp, '\n', fp));
+}
diff --git a/lib/libc/stdio/stdio.3 b/lib/libc/stdio/stdio.3
index 1a13ee9..a4d1eb7 100644
--- a/lib/libc/stdio/stdio.3
+++ b/lib/libc/stdio/stdio.3
@@ -28,7 +28,7 @@
 .\"     @(#)stdio.3	8.7 (Berkeley) 4/19/94
 .\" $FreeBSD$
 .\"
-.Dd January 10, 2003
+.Dd February 28, 2009
 .Dt STDIO 3
 .Os
 .Sh NAME
@@ -276,6 +276,8 @@ library conforms to
 .It "fwrite	binary stream input/output"
 .It "getc	get next character or word from input stream"
 .It "getchar	get next character or word from input stream"
+.It "getdelim	get a line from a stream"
+.It "getline	get a line from a stream"
 .It "gets	get a line from a stream"
 .It "getw	get next character or word from input stream"
 .It "getwc	get next wide character from input stream"
diff --git a/lib/libc/string/Makefile.inc b/lib/libc/string/Makefile.inc
index dffaf87..cc46ceb 100644
--- a/lib/libc/string/Makefile.inc
+++ b/lib/libc/string/Makefile.inc
@@ -8,14 +8,16 @@ CFLAGS+= -I${.CURDIR}/locale
 # machine-independent string sources
 MISRCS+=bcmp.c bcopy.c bzero.c ffs.c ffsl.c ffsll.c fls.c flsl.c flsll.c \
 	index.c memccpy.c memchr.c memrchr.c memcmp.c \
-	memcpy.c memmem.c memmove.c memset.c rindex.c stpcpy.c strcasecmp.c \
+	memcpy.c memmem.c memmove.c memset.c rindex.c \
+	stpcpy.c stpncpy.c strcasecmp.c \
 	strcat.c strcasestr.c strchr.c strcmp.c strcoll.c strcpy.c strcspn.c \
 	strdup.c strerror.c strlcat.c strlcpy.c strlen.c strmode.c strncat.c \
-	strncmp.c strncpy.c strndup.c strnstr.c \
+	strncmp.c strncpy.c strndup.c strnlen.c strnstr.c \
 	strpbrk.c strrchr.c strsep.c strsignal.c strspn.c strstr.c strtok.c \
-	strxfrm.c swab.c wcscat.c wcschr.c wcscmp.c wcscoll.c wcscpy.c \
-	wcscspn.c wcsdup.c \
-	wcslcat.c wcslcpy.c wcslen.c wcsncat.c wcsncmp.c wcsncpy.c wcspbrk.c \
+	strxfrm.c swab.c wcscasecmp.c wcscat.c \
+	wcschr.c wcscmp.c wcscoll.c wcscpy.c wcscspn.c wcsdup.c \
+	wcslcat.c wcslcpy.c wcslen.c wcsncasecmp.c wcsncat.c wcsncmp.c \
+	wcsncpy.c wcsnlen.c wcspbrk.c \
 	wcsrchr.c wcsspn.c wcsstr.c wcstok.c wcswidth.c wcsxfrm.c wmemchr.c \
 	wmemcmp.c \
 	wmemcpy.c wmemmove.c wmemset.c
@@ -47,6 +49,7 @@ MLINKS+=strcat.3 strncat.3
 MLINKS+=strchr.3 strrchr.3
 MLINKS+=strcmp.3 strncmp.3
 MLINKS+=strcpy.3 stpcpy.3 \
+	strcpy.3 stpncpy.3 \
 	strcpy.3 strncpy.3
 MLINKS+=strdup.3 strndup.3
 MLINKS+=strerror.3 perror.3 \
@@ -54,10 +57,12 @@ MLINKS+=strerror.3 perror.3 \
 	strerror.3 sys_errlist.3 \
 	strerror.3 sys_nerr.3
 MLINKS+=strlcpy.3 strlcat.3
+MLINKS+=strlen.3 strnlen.3
 MLINKS+=strstr.3 strcasestr.3 \
 	strstr.3 strnstr.3
 MLINKS+=strtok.3 strtok_r.3
-MLINKS+=wmemchr.3 wcscat.3 \
+MLINKS+=wmemchr.3 wcscasecmp.3 \
+	wmemchr.3 wcscat.3 \
 	wmemchr.3 wcschr.3 \
 	wmemchr.3 wcscmp.3 \
 	wmemchr.3 wcscpy.3 \
@@ -66,9 +71,11 @@ MLINKS+=wmemchr.3 wcscat.3 \
 	wmemchr.3 wcslcat.3 \
 	wmemchr.3 wcslcpy.3 \
 	wmemchr.3 wcslen.3 \
+	wmemchr.3 wcsncasecmp.3 \
 	wmemchr.3 wcsncat.3 \
 	wmemchr.3 wcsncmp.3 \
 	wmemchr.3 wcsncpy.3 \
+	wmemchr.3 wcsnlen.3 \
 	wmemchr.3 wcspbrk.3 \
 	wmemchr.3 wcsrchr.3 \
 	wmemchr.3 wcsspn.3 \
diff --git a/lib/libc/string/Symbol.map b/lib/libc/string/Symbol.map
index c69f0b5..4829559 100644
--- a/lib/libc/string/Symbol.map
+++ b/lib/libc/string/Symbol.map
@@ -81,7 +81,12 @@ FBSD_1.1 {
 	ffsll;
 	flsll;
 	memrchr;
+	stpncpy;
 	strndup;
+	strnlen;
+	wcscasecmp;
+	wcsncasecmp;
+	wcsnlen;
 };
 
 FBSDprivate_1.0 {
diff --git a/lib/libc/string/stpncpy.c b/lib/libc/string/stpncpy.c
new file mode 100644
index 0000000..df70dc6
--- /dev/null
+++ b/lib/libc/string/stpncpy.c
@@ -0,0 +1,45 @@
+/*-
+ * Copyright (c) 2009 David Schultz <das@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <string.h>
+
+char *
+stpncpy(char * __restrict dst, const char * __restrict src, size_t n)
+{
+
+	for (; n--; dst++, src++) {
+		if (!(*dst = *src)) {
+			char *ret = dst;
+			while (n--)
+				*++dst = '\0';
+			return (ret);
+		}
+	}
+	return (dst);
+}
diff --git a/lib/libc/string/strcpy.3 b/lib/libc/string/strcpy.3
index 8284753..619b4e7 100644
--- a/lib/libc/string/strcpy.3
+++ b/lib/libc/string/strcpy.3
@@ -32,18 +32,20 @@
 .\"     @(#)strcpy.3	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd August 9, 2001
+.Dd February 28, 2009
 .Dt STRCPY 3
 .Os
 .Sh NAME
-.Nm strcpy , strncpy
+.Nm stpcpy, stpncpy, strcpy , strncpy
 .Nd copy strings
 .Sh LIBRARY
 .Lb libc
 .Sh SYNOPSIS
 .In string.h
 .Ft char *
-.Fn stpcpy "char *dst" "const char *src"
+.Fn stpcpy "char * restrict dst" "const char * restrict src"
+.Ft char *
+.Fn stpncpy "char * restrict dst" "const char * restrict src" "size_t len"
 .Ft char *
 .Fn strcpy "char * restrict dst" "const char * restrict src"
 .Ft char *
@@ -63,8 +65,10 @@ to
 character.)
 .Pp
 The
+.Fn stpncpy
+and
 .Fn strncpy
-function copies at most
+functions copy at most
 .Fa len
 characters from
 .Fa src
@@ -95,10 +99,21 @@ return
 .Fa dst .
 The
 .Fn stpcpy
-function returns a pointer to the terminating
+and
+.Fn stpncpy
+functions return a pointer to the terminating
 .Ql \e0
 character of
 .Fa dst .
+If
+.Fn stpncpy
+does not terminate
+.Fa dst
+with a
+.Dv NUL
+character, it instead returns a pointer to
+.Li dst[n]
+(which does not necessarily refer to a valid memory location.)
 .Sh EXAMPLES
 The following sets
 .Va chararray
@@ -185,14 +200,16 @@ conform to
 .St -isoC .
 The
 .Fn stpcpy
-function is an MS-DOS and GNUism.
-The
-.Fn stpcpy
-function
-conforms to no standard.
+and
+.Fn stpncpy
+functions conform to
+.St -p1003.1-2008 .
 .Sh HISTORY
 The
 .Fn stpcpy
 function first appeared in
 .Fx 4.4 ,
-coming from 1998-vintage Linux.
+and
+.Fn stpncpy
+was added in
+.Fx 8.0 .
diff --git a/lib/libc/string/strlen.3 b/lib/libc/string/strlen.3
index 29c3515..f7aa033 100644
--- a/lib/libc/string/strlen.3
+++ b/lib/libc/string/strlen.3
@@ -32,11 +32,11 @@
 .\"     @(#)strlen.3	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd June 4, 1993
+.Dd February 28, 2009
 .Dt STRLEN 3
 .Os
 .Sh NAME
-.Nm strlen
+.Nm strlen, strnlen
 .Nd find length of string
 .Sh LIBRARY
 .Lb libc
@@ -44,12 +44,22 @@
 .In string.h
 .Ft size_t
 .Fn strlen "const char *s"
+.Ft size_t
+.Fn strnlen "const char *s" "size_t maxlen"
 .Sh DESCRIPTION
 The
 .Fn strlen
 function
 computes the length of the string
 .Fa s .
+The
+.Fn strnlen
+function attempts to compute the length of
+.Fa s ,
+but never scans beyond the first
+.Fa maxlen
+bytes of
+.Fa s .
 .Sh RETURN VALUES
 The
 .Fn strlen
@@ -59,6 +69,13 @@ the number of characters that precede the
 terminating
 .Dv NUL
 character.
+The
+.Fn strnlen
+function returns either the same result as
+.Fn strlen
+or
+.Fa maxlen ,
+whichever is smaller.
 .Sh SEE ALSO
 .Xr string 3
 .Sh STANDARDS
@@ -67,3 +84,7 @@ The
 function
 conforms to
 .St -isoC .
+The
+.Fn strnlen
+function conforms to
+.St -p1003.1-2008 .
diff --git a/lib/libc/string/strnlen.c b/lib/libc/string/strnlen.c
new file mode 100644
index 0000000..f44151f
--- /dev/null
+++ b/lib/libc/string/strnlen.c
@@ -0,0 +1,42 @@
+/*-
+ * Copyright (c) 2009 David Schultz <das@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <string.h>
+
+size_t
+strnlen(const char *s, size_t maxlen)
+{
+	size_t len;
+
+	for (len = 0; len < maxlen; len++, s++) {
+		if (!*s)
+			break;
+	}
+	return (len);
+}
diff --git a/lib/libc/string/wcscasecmp.c b/lib/libc/string/wcscasecmp.c
new file mode 100644
index 0000000..0143543
--- /dev/null
+++ b/lib/libc/string/wcscasecmp.c
@@ -0,0 +1,45 @@
+/*-
+ * Copyright (c) 2009 David Schultz <das@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <wchar.h>
+#include <wctype.h>
+
+int
+wcscasecmp(const wchar_t *s1, const wchar_t *s2)
+{
+	wchar_t c1, c2;
+
+	for (; *s1; s1++, s2++) {
+		c1 = towlower(*s1);
+		c2 = towlower(*s2);
+		if (c1 != c2)
+			return ((int)c1 - c2);
+	}
+	return (-*s2);
+}
diff --git a/lib/libc/string/wcsncasecmp.c b/lib/libc/string/wcsncasecmp.c
new file mode 100644
index 0000000..a42d98c
--- /dev/null
+++ b/lib/libc/string/wcsncasecmp.c
@@ -0,0 +1,49 @@
+/*-
+ * Copyright (c) 2009 David Schultz <das@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <wchar.h>
+#include <wctype.h>
+
+int
+wcsncasecmp(const wchar_t *s1, const wchar_t *s2, size_t n)
+{
+	wchar_t c1, c2;
+
+	if (n == 0)
+		return (0);
+	for (; *s1; s1++, s2++) {
+		c1 = towlower(*s1);
+		c2 = towlower(*s2);
+		if (c1 != c2)
+			return ((int)c1 - c2);
+		if (--n == 0)
+			return (0);
+	}
+	return (-*s2);
+}
diff --git a/lib/libc/string/wcsnlen.c b/lib/libc/string/wcsnlen.c
new file mode 100644
index 0000000..f03cf76
--- /dev/null
+++ b/lib/libc/string/wcsnlen.c
@@ -0,0 +1,42 @@
+/*-
+ * Copyright (c) 2009 David Schultz <das@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <wchar.h>
+
+size_t
+wcsnlen(const wchar_t *s, size_t maxlen)
+{
+	size_t len;
+
+	for (len = 0; len < maxlen; len++, s++) {
+		if (!*s)
+			break;
+	}
+	return (len);
+}
diff --git a/lib/libc/string/wmemchr.3 b/lib/libc/string/wmemchr.3
index 26ff1df..8812ca3 100644
--- a/lib/libc/string/wmemchr.3
+++ b/lib/libc/string/wmemchr.3
@@ -35,7 +35,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd August 13, 2005
+.Dd February 28, 2009
 .Dt WMEMCHR 3
 .Os
 .Sh NAME
@@ -44,6 +44,7 @@
 .Nm wmemcpy ,
 .Nm wmemmove ,
 .Nm wmemset ,
+.Nm wcscasecmp ,
 .Nm wcscat ,
 .Nm wcschr ,
 .Nm wcscmp ,
@@ -53,9 +54,11 @@
 .Nm wcslcat ,
 .Nm wcslcpy ,
 .Nm wcslen ,
+.Nm wcsncasecmp ,
 .Nm wcsncat ,
 .Nm wcsncmp ,
 .Nm wcsncpy ,
+.Nm wcsnlen ,
 .Nm wcspbrk ,
 .Nm wcsrchr ,
 .Nm wcsspn ,
@@ -75,6 +78,8 @@
 .Fn wmemmove "wchar_t *s1" "const wchar_t *s2" "size_t n"
 .Ft wchar_t *
 .Fn wmemset "wchar_t *s" "wchar_t c" "size_t n"
+.Ft int
+.Fn wcscasecmp "const wchar_t *s1" "const wchar_t *s2"
 .Ft wchar_t *
 .Fn wcscat "wchar_t * restrict s1" "const wchar_t * restrict s2"
 .Ft wchar_t *
@@ -93,12 +98,16 @@
 .Fn wcslcpy "wchar_t *s1" "const wchar_t *s2" "size_t n"
 .Ft size_t
 .Fn wcslen "const wchar_t *s"
+.Ft int
+.Fn wcsncasecmp "const wchar_t *s1" "const wchar_t *s2" "size_t n"
 .Ft wchar_t *
 .Fn wcsncat "wchar_t * restrict s1" "const wchar_t * restrict s2" "size_t n"
 .Ft int
 .Fn wcsncmp "const wchar_t *s1" "const wchar_t * s2" "size_t n"
 .Ft wchar_t *
 .Fn wcsncpy "wchar_t * restrict s1" "const wchar_t * restrict s2" "size_t n"
+.Ft size_t
+.Fn wcsnlen "const wchar_t *s" "size_t maxlen"
 .Ft wchar_t *
 .Fn wcspbrk "const wchar_t *s1" "const wchar_t *s2"
 .Ft wchar_t *
@@ -119,6 +128,7 @@ counterpart, such as
 .Xr memcpy 3 ,
 .Xr memmove 3 ,
 .Xr memset 3 ,
+.Xr strcasecmp 3 ,
 .Xr strcat 3 ,
 .Xr strchr 3 ,
 .Xr strcmp 3 ,
@@ -131,6 +141,7 @@ counterpart, such as
 .Xr strncat 3 ,
 .Xr strncmp 3 ,
 .Xr strncpy 3 ,
+.Xr strnlen 3 ,
 .Xr strpbrk 3 ,
 .Xr strrchr 3 ,
 .Xr strspn 3 ,
@@ -139,8 +150,15 @@ counterpart, such as
 These functions conform to
 .St -isoC-99 ,
 with the exception of
+.Fn wcscasecmp ,
 .Fn wcsdup ,
-.Fn wcslcat ,
+.Fn wcsncasecmp ,
+and
+.Fn wcsnlen ,
+which conform to
+.St -p1003.1-2008 ;
+and
+.Fn wcslcat
 and
 .Fn wcslcpy ,
 which are extensions.