Add versions of stpcpy(3), stpncpy(3), strnlen(3), all from FreeBSD.
These are defined in the latest POSIX Also make related updates to documentation, mostly from FreeBSD, though I cleaned a few other things up along the way. Bump shlib_version. We are still missing strcoll_l, strerror_l, strsignal, strxfrm_l to be POSIX conformant.
This commit is contained in:
perry
parent
bdb0c5fb32
commit
be11851995
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@ -1,4 +1,4 @@
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# $NetBSD: shlib_version,v 1.210 2009/04/12 17:07:16 christos Exp $
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# $NetBSD: shlib_version,v 1.211 2009/05/01 17:27:01 perry Exp $
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# Remember to update distrib/sets/lists/base/shl.* when changing
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#
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# things we wish to do on next major version bump:
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@ -35,4 +35,4 @@
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# it's insufficient bitwidth to implement all ctype class.
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# see isblank's comment in ctype.h.
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major=12
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minor=166
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minor=167
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@ -1,11 +1,13 @@
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# from: @(#)Makefile.inc 8.1 (Berkeley) 6/4/93
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# $NetBSD: Makefile.inc,v 1.70 2009/04/10 23:13:38 christos Exp $
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# $NetBSD: Makefile.inc,v 1.71 2009/05/01 17:27:01 perry Exp $
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# string sources
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.PATH: ${ARCHDIR}/string ${.CURDIR}/string
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SRCS+= bm.c strcasecmp.c strncasecmp.c strcasestr.c strcoll.c strdup.c \
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strerror.c strlcat.c strlcpy.c strmode.c strsignal.c strtok.c \
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SRCS+= bm.c stpcpy.c stpncpy.c \
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strcasecmp.c strncasecmp.c strcasestr.c strcoll.c strdup.c \
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strerror.c strlcat.c strlcpy.c strnlen.c \
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strmode.c strsignal.c strtok.c \
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strtok_r.c strxfrm.c __strsignal.c strerror_r.c strndup.c \
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stresep.c memrchr.c
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@ -66,8 +68,9 @@ MLINKS+=bm.3 bm_comp.3 bm.3 bm_exec.3 bm.3 bm_free.3
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MLINKS+=strcasecmp.3 strncasecmp.3
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MLINKS+=strcat.3 strncat.3
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MLINKS+=strcmp.3 strncmp.3
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MLINKS+=strcpy.3 strncpy.3
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MLINKS+=strcpy.3 strncpy.3 strcpy.3 stpcpy.3 strcpy.3 stpncpy.3
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MLINKS+=strlcpy.3 strlcat.3
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MLINKS+=strlen.3 strnlen.3
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MLINKS+=strstr.3 strcasestr.3
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MLINKS+=memchr.3 memrchr.3
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MLINKS+=strtok.3 strtok_r.3
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@ -0,0 +1,52 @@
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/* $NetBSD: stpcpy.c,v 1.1 2009/05/01 17:27:01 perry Exp $ */
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/*
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* Copyright (c) 1999
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* David E. O'Brien
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
|
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* notice, this list of conditions and the following disclaimer.
|
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* 2. Redistributions in binary form must reproduce the above copyright
|
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* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char sccsid[] = "@(#)strcpy.c 8.1 (Berkeley) 6/4/93";
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#else
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__RCSID("$NetBSD: stpcpy.c,v 1.1 2009/05/01 17:27:01 perry Exp $");
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#endif
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#endif /* LIBC_SCCS and not lint */
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/* FreeBSD: src/lib/libc/string/stpcpy.c,v 1.2 2009/02/28 06:05:37 das Exp */
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#include <string.h>
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char *
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stpcpy(char * __restrict to, const char * __restrict from)
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{
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for (; (*to = *from); ++from, ++to);
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return(to);
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}
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@ -0,0 +1,50 @@
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/* $NetBSD: stpncpy.c,v 1.1 2009/05/01 17:27:01 perry Exp $ */
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/*-
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* Copyright (c) 2009 David Schultz <das@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
|
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* modification, are permitted provided that the following conditions
|
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* are met:
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* 1. Redistributions of source code must retain the above copyright
|
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* notice, this list of conditions and the following disclaimer.
|
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* 2. Redistributions in binary form must reproduce the above copyright
|
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* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: stpncpy.c,v 1.1 2009/05/01 17:27:01 perry Exp $");
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#endif /* LIBC_SCCS and not lint */
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/* FreeBSD: src/lib/libc/string/stpncpy.c,v 1.1 2009/02/28 06:00:58 das Exp */
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#include <string.h>
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char *
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stpncpy(char * __restrict dst, const char * __restrict src, size_t n)
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{
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for (; n--; dst++, src++) {
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if (!(*dst = *src)) {
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char *ret = dst;
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while (n--)
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*++dst = '\0';
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return (ret);
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}
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}
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return (dst);
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}
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@ -30,12 +30,14 @@
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.\" SUCH DAMAGE.
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.\"
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.\" from: @(#)strcpy.3 8.1 (Berkeley) 6/4/93
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.\" $NetBSD: strcpy.3,v 1.17 2006/10/16 08:48:45 wiz Exp $
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.\" $NetBSD: strcpy.3,v 1.18 2009/05/01 17:27:01 perry Exp $
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.\"
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.Dd May 6, 2002
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.Dd May 1, 2009
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.Dt STRCPY 3
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.Os
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.Sh NAME
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.Nm stpcpy ,
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.Nm stpncpy ,
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.Nm strcpy ,
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.Nm strncpy
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.Nd copy strings
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@ -44,14 +46,18 @@
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.Sh SYNOPSIS
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.In string.h
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.Ft char *
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.Fn stpcpy "char * restrict dst" "const char * restrict src"
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.Ft char *
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.Fn stpncpy "char * restrict dst" "const char * restrict src" "size_t len"
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.Ft char *
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.Fn strcpy "char * restrict dst" "const char * restrict src"
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.Ft char *
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.Fn strncpy "char * restrict dst" "const char * restrict src" "size_t len"
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.Sh DESCRIPTION
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The
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.Fn strcpy
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.Fn stpcpy
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and
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.Fn strncpy
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.Fn strcpy
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functions
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copy the string
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.Fa src
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@ -62,26 +68,30 @@ to
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character).
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.Pp
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The
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.Fn stpncpy
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and
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.Fn strncpy
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function copies not more than
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functions copy at most
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.Fa len
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characters into
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.Fa dst ,
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appending
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.Ql \e0
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characters if
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characters from
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.Fa src
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into
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.Fa dst .
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If
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.Fa src
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is less than
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.Fa len
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characters long, and
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.Em not
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terminating
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characters long,
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the remainder of
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.Fa dst
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is filled with
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.Ql \e0
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characters.
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Otherwise,
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.Fa dst
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if
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.Fa src
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is
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.Fa len
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or more characters long.
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.Em not
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terminated.
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.Sh RETURN VALUES
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The
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.Fn strcpy
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@ -90,64 +100,105 @@ and
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functions
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return
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.Fa dst .
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The
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.Fn stpcpy
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and
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.Fn stpncpy
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functions return a pointer to the terminating
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.Ql \e0
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character of
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.Fa dst .
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If
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.Fn stpncpy
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does not terminate
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.Fa dst
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with a
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.Dv NUL
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character, it instead returns a pointer to
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.Li dst[len]
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(which does not necessarily refer to a valid memory location.)
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.Sh EXAMPLES
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The following sets
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.Dq Li chararray
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.Va chararray
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to
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.Dq Li abc\e0\e0\e0 .
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.Dq Li abc\e0\e0\e0 :
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.Bd -literal -offset indent
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(void)strncpy(chararray, "abc", 6);
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char chararray[6];
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(void)strncpy(chararray, "abc", sizeof(chararray));
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.Ed
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.Pp
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The following sets
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.Dq Li chararray
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to
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.Dq Li abcdef
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and does
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.Em not
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nul-terminate
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.Va chararray
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because the source string is \*[Gt]= the length parameter.
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to
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.Dq Li abcdef :
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.Bd -literal -offset indent
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char chararray[6];
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(void)strncpy(chararray, "abcdefgh", sizeof(chararray));
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.Ed
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.Pp
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Note that it does
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.Em not
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.Tn NUL
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terminate
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.Va chararray
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because the length of the source string is greater than or equal
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to the length parameter.
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.Fn strncpy
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.Em only
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nul-terminates the destination string when the length of the source
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.Tn NUL
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terminates
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the destination string when the length of the source
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string is less than the length parameter.
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.Bd -literal -offset indent
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(void)strncpy(chararray, "abcdefgh", 6);
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.Ed
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.Pp
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The following copies as many characters from
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.Va input
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to
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.Va buf
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as will fit and nul-terminates the result.
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as will fit and
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.Tn NUL
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terminates the result.
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Because
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.Fn strncpy
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does
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.Em not
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guarantee to nul-terminate the string itself, we must do this by hand.
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guarantee to
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.Tn NUL
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terminate the string itself, this must be done explicitly.
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.Bd -literal -offset indent
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char buf[BUFSIZ];
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char buf[1024];
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(void)strncpy(buf, input, sizeof(buf) - 1);
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buf[sizeof(buf) - 1] = '\e0';
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.Ed
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.Pp
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Note that
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.Xr strlcpy 3
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is a better choice for this kind of operation.
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The equivalent using
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.Xr strlcpy 3
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is simply:
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This could be better and more simply achieved using
|
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.Xr strlcpy 3 ,
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as shown in the following example:
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.Bd -literal -offset indent
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(void)strlcpy(buf, input, sizeof(buf));
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.Ed
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.Pp
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Note that because
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.Xr strlcpy 3
|
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is not defined in any standards, it should
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only be used when portability is not a concern.
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.Sh SECURITY CONSIDERATIONS
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The
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.Fn strcpy
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and
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.Fn stpcpy
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functions are easily misused in a manner which enables malicious users
|
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to arbitrarily change a running program's functionality through a
|
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buffer overflow attack.
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.Sh SEE ALSO
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.Xr bcopy 3 ,
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.Xr memccpy 3 ,
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.Xr memcpy 3 ,
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.Xr memmove 3 ,
|
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.Xr strlcpy 3
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.Xr strlcpy 3 ,
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.Xr wcscpy 3
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.Sh STANDARDS
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The
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.Fn strcpy
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|
|
@ -156,3 +207,16 @@ and
|
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functions
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conform to
|
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.St -isoC-99 .
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The
|
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.Fn stpcpy
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and
|
||||
.Fn stpncpy
|
||||
functions conform to
|
||||
.St -p1003.1-2008 .
|
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.Sh HISTORY
|
||||
The
|
||||
.Fn stpcpy
|
||||
and
|
||||
.Fn stpncpy
|
||||
functions first appeared in
|
||||
.Nx 6.0 .
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|
|
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|||
|
|
@ -28,12 +28,14 @@
|
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.\" SUCH DAMAGE.
|
||||
.\"
|
||||
.\" from: @(#)string.3 8.2 (Berkeley) 12/11/93
|
||||
.\" $NetBSD: string.3,v 1.15 2007/02/17 09:32:58 wiz Exp $
|
||||
.\" $NetBSD: string.3,v 1.16 2009/05/01 17:27:01 perry Exp $
|
||||
.\"
|
||||
.Dd February 17, 2007
|
||||
.Dd May 1, 2009
|
||||
.Dt STRING 3
|
||||
.Os
|
||||
.Sh NAME
|
||||
.Nm stpcpy ,
|
||||
.Nm stpncpy ,
|
||||
.Nm strcat ,
|
||||
.Nm strlcat ,
|
||||
.Nm strncat ,
|
||||
|
|
@ -41,6 +43,8 @@
|
|||
.Nm strrchr ,
|
||||
.Nm strcmp ,
|
||||
.Nm strncmp ,
|
||||
.Nm strcasecmp ,
|
||||
.Nm strncasecmp ,
|
||||
.Nm strcoll ,
|
||||
.Nm strcpy ,
|
||||
.Nm strlcpy ,
|
||||
|
|
@ -48,6 +52,7 @@
|
|||
.Nm strerror ,
|
||||
.Nm strerror_r ,
|
||||
.Nm strlen ,
|
||||
.Nm strnlen ,
|
||||
.Nm strpbrk ,
|
||||
.Nm strsep ,
|
||||
.Nm stresep ,
|
||||
|
|
@ -66,6 +71,10 @@
|
|||
.Sh SYNOPSIS
|
||||
.In string.h
|
||||
.Ft char *
|
||||
.Fn stpcpy "char *dst" "const char *src"
|
||||
.Ft char *
|
||||
.Fn stpncpy "char *dst" "const char *src" "size_t count"
|
||||
.Ft char *
|
||||
.Fn strcat "char *s" "const char * append"
|
||||
.Ft size_t
|
||||
.Fn strlcat "char *dst" "const char *src" "size_t size"
|
||||
|
|
@ -80,6 +89,10 @@
|
|||
.Ft int
|
||||
.Fn strncmp "const char *s1" "const char *s2" "size_t count"
|
||||
.Ft int
|
||||
.Fn strcasecmp "const char *s1" "const char *s2"
|
||||
.Ft int
|
||||
.Fn strncasecmp "const char *s1" "const char *s2" "size_t count"
|
||||
.Ft int
|
||||
.Fn strcoll "const char *s1" "const char *s2"
|
||||
.Ft char *
|
||||
.Fn strcpy "char *dst" "const char *src"
|
||||
|
|
@ -93,6 +106,8 @@
|
|||
.Fn strerror_r "int errnum" "char *strerrbuf" "size_t buflen"
|
||||
.Ft size_t
|
||||
.Fn strlen "const char *s"
|
||||
.Ft size_t
|
||||
.Fn strnlen "const char *s" "size_t count"
|
||||
.Ft char *
|
||||
.Fn strpbrk "const char *s" "const char *charset"
|
||||
.Ft char *
|
||||
|
|
|
|||
|
|
@ -30,13 +30,14 @@
|
|||
.\" SUCH DAMAGE.
|
||||
.\"
|
||||
.\" from: @(#)strlen.3 8.1 (Berkeley) 6/4/93
|
||||
.\" $NetBSD: strlen.3,v 1.8 2003/08/07 16:43:51 agc Exp $
|
||||
.\" $NetBSD: strlen.3,v 1.9 2009/05/01 17:27:01 perry Exp $
|
||||
.\"
|
||||
.Dd June 4, 1993
|
||||
.Dd May 1, 2009
|
||||
.Dt STRLEN 3
|
||||
.Os
|
||||
.Sh NAME
|
||||
.Nm strlen
|
||||
.Nm strlen ,
|
||||
.Nm strnlen
|
||||
.Nd find length of string
|
||||
.Sh LIBRARY
|
||||
.Lb libc
|
||||
|
|
@ -44,12 +45,23 @@
|
|||
.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 .
|
||||
.Pp
|
||||
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
|
||||
|
|
@ -59,11 +71,25 @@ the number of characters that precede the
|
|||
terminating
|
||||
.Dv NUL
|
||||
character.
|
||||
.Pp
|
||||
The
|
||||
.Fn strnlen
|
||||
function returns either the same result as
|
||||
.Fn strlen
|
||||
or
|
||||
.Fa maxlen ,
|
||||
whichever is smaller.
|
||||
.Sh SEE ALSO
|
||||
.Xr string 3
|
||||
.Xr string 3 ,
|
||||
.Xr wcslen 3 ,
|
||||
.Xr wcswidth 3
|
||||
.Sh STANDARDS
|
||||
The
|
||||
.Fn strlen
|
||||
function
|
||||
conforms to
|
||||
.St -ansiC .
|
||||
.St -isoC .
|
||||
The
|
||||
.Fn strnlen
|
||||
function conforms to
|
||||
.St -p1003.1-2008 .
|
||||
|
|
|
|||
|
|
@ -0,0 +1,47 @@
|
|||
/* $NetBSD: strnlen.c,v 1.1 2009/05/01 17:27:01 perry Exp $ */
|
||||
|
||||
/*-
|
||||
* 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>
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
__RCSID("$NetBSD: strnlen.c,v 1.1 2009/05/01 17:27:01 perry Exp $");
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
/* FreeBSD: src/lib/libc/string/strnlen.c,v 1.1 2009/02/28 06:00:58 das Exp */
|
||||
|
||||
#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);
|
||||
}
|
||||
|
|
@ -1,4 +1,4 @@
|
|||
.\" $NetBSD: wmemchr.3,v 1.12 2006/10/14 07:52:15 wiz Exp $
|
||||
.\" $NetBSD: wmemchr.3,v 1.13 2009/05/01 17:27:01 perry Exp $
|
||||
.\"
|
||||
.\" Copyright (c) 1990, 1991, 1993
|
||||
.\" The Regents of the University of California. All rights reserved.
|
||||
|
|
@ -33,7 +33,7 @@
|
|||
.\"
|
||||
.\" from: @(#)strcpy.3 8.1 (Berkeley) 6/4/93
|
||||
.\"
|
||||
.Dd October 13, 2006
|
||||
.Dd May 1, 2009
|
||||
.Dt WMEMCHR 3
|
||||
.Os
|
||||
.Sh NAME
|
||||
|
|
@ -126,17 +126,23 @@ function is strongly recommended to be used.
|
|||
.Xr memcpy 3 ,
|
||||
.Xr memmove 3 ,
|
||||
.Xr memset 3 ,
|
||||
.Xr stpcpy 3 ,
|
||||
.Xr stpncpy 3 ,
|
||||
.Xr strcasecmp 3 ,
|
||||
.Xr strcat 3 ,
|
||||
.Xr strchr 3 ,
|
||||
.Xr strcmp 3 ,
|
||||
.Xr strcpy 3 ,
|
||||
.Xr strcspn 3 ,
|
||||
.Xr strdup 3 ,
|
||||
.Xr strlcat 3 ,
|
||||
.Xr strlcpy 3 ,
|
||||
.Xr strlen 3 ,
|
||||
.Xr strnlen 3 ,
|
||||
.Xr strncat 3 ,
|
||||
.Xr strncmp 3 ,
|
||||
.Xr strncpy 3 ,
|
||||
.Xr strnlen 3 ,
|
||||
.Xr strpbrk 3 ,
|
||||
.Xr strrchr 3 ,
|
||||
.Xr strspn 3 ,
|
||||
|
|
|
|||
Loading…
Reference in New Issue