Import strl{cat,cpy} from OpenBSD.
Obtained from: OpenBSD
This commit is contained in:
parent
5abfdd1eef
commit
a41df9e30e
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=49593
@ -1,5 +1,5 @@
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# @(#)Makefile.inc 8.1 (Berkeley) 6/4/93
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# $Id: Makefile.inc,v 1.16 1999/05/18 04:48:57 peter Exp $
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# $Id: Makefile.inc,v 1.17 1999/05/19 06:32:00 bde Exp $
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.PATH: ${.CURDIR}/../libc/${MACHINE_ARCH}/string ${.CURDIR}/../libc/string
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@ -8,9 +8,10 @@ CFLAGS += -I${.CURDIR}/../libc/locale
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# machine-independent string sources
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MISRCS+=bcmp.c bcopy.c bzero.c ffs.c index.c memccpy.c memchr.c memcmp.c \
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memcpy.c memmove.c memset.c rindex.c strcasecmp.c strcat.c strchr.c \
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strcmp.c strcoll.c strcpy.c strcspn.c strdup.c strerror.c strlen.c \
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strmode.c strncat.c strncmp.c strncpy.c strpbrk.c strrchr.c strsep.c \
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strsignal.c strspn.c strstr.c strtok.c strxfrm.c swab.c
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strcmp.c strcoll.c strcpy.c strcspn.c strdup.c strerror.c \
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strlcat.c strlcpy.c strlen.c strmode.c strncat.c strncmp.c strncpy.c \
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strpbrk.c strrchr.c strsep.c strsignal.c strspn.c strstr.c strtok.c \
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strxfrm.c swab.c
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# machine-dependent string sources
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.include "${.CURDIR}/../libc/${MACHINE_ARCH}/string/Makefile.inc"
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@ -19,13 +20,14 @@ MISRCS+=bcmp.c bcopy.c bzero.c ffs.c index.c memccpy.c memchr.c memcmp.c \
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MAN3+= bcmp.3 bcopy.3 bstring.3 bzero.3 ffs.3 index.3 memccpy.3 memchr.3 \
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memcmp.3 memcpy.3 memmove.3 memset.3 rindex.3 strcasecmp.3 strcat.3 \
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strchr.3 strcmp.3 strcoll.3 strcpy.3 strcspn.3 strdup.3 strerror.3 \
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string.3 strlen.3 strmode.3 strpbrk.3 strrchr.3 strsep.3 strspn.3 \
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strstr.3 strtok.3 strxfrm.3 swab.3
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string.3 strlcpy.3 strlen.3 strmode.3 strpbrk.3 strrchr.3 strsep.3 \
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strspn.3 strstr.3 strtok.3 strxfrm.3 swab.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+=strerror.3 perror.3 strerror.3 sys_errlist.3 strerror.3 sys_nerr.3
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MLINKS+=strlcpy.3 strlcat.3
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MLINKS+=strtok.3 strtok_r.3
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.endif
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71
lib/libc/string/strlcat.c
Normal file
71
lib/libc/string/strlcat.c
Normal file
@ -0,0 +1,71 @@
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/* $OpenBSD: strlcat.c,v 1.1 1998/07/01 01:29:45 millert Exp $ */
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/*
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* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
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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
|
||||
* 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. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
|
||||
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
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* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char *rcsid = "$OpenBSD: strlcat.c,v 1.1 1998/07/01 01:29:45 millert Exp $";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/types.h>
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#include <string.h>
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/*
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* Appends src to string dst of size siz (unlike strncat, siz is the
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* full size of dst, not space left). At most siz-1 characters
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* will be copied. Always NUL terminates (unless siz == 0).
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* Returns strlen(src); if retval >= siz, truncation occurred.
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*/
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size_t strlcat(dst, src, siz)
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char *dst;
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const char *src;
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size_t siz;
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{
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register char *d = dst;
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register const char *s = src;
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register size_t n = siz;
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size_t dlen;
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/* Find the end of dst and adjust bytes left */
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while (*d != '\0' && n != 0)
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d++;
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dlen = d - dst;
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n -= dlen;
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if (n == 0)
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return(dlen + strlen(s));
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while (*s != '\0') {
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if (n != 1) {
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*d++ = *s;
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n--;
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}
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s++;
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}
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*d = '\0';
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return(dlen + (s - src)); /* count does not include NUL */
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}
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147
lib/libc/string/strlcpy.3
Normal file
147
lib/libc/string/strlcpy.3
Normal file
@ -0,0 +1,147 @@
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.\" $OpenBSD: strlcpy.3,v 1.3 1998/11/11 17:12:02 espie Exp $
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.\"
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.\" Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
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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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.\" 3. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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.\" INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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.\" AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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.\" THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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.\" EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
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.\" PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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.\" OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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.\" WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
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.\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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.\" ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd June 22, 1998
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.Dt STRLCPY 3
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.Os
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.Sh NAME
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.Nm strlcpy,
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.Nm strlcat
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.Nd size-bounded string copying and concatenation
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.Sh SYNOPSIS
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.Fd #include <string.h>
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.Ft size_t
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.Fn strlcpy "char *dst" "const char *src" "size_t size"
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.Ft size_t
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.Fn strlcat "char *dst" "const char *src" "size_t size"
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.Sh DESCRIPTION
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The
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.Fn strlcpy
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and
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.Fn strlcat
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functions copy and concatenate strings respectively. They are designed
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to be safer, more consistent, and less error prone replacements for
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.Xr strncpy 3
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and
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.Xr strncat 3 .
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Unlike those functions,
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.Fn strlcpy
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and
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.Fn strlcat
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take the full size of the buffer (not just the length) and guarantee to
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NUL-terminate the result (as long as
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.Fa size
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is larger than 0). Note that you should include a byte for the NUL in
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.Fa size .
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.Pp
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The
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.Fn strlcpy
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function copies up to
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.Fa size
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- 1 characters from the NUL-terminated string
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.Fa src
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to
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.Fa dst ,
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NUL-terminating the result.
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.Pp
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The
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.Fn strlcat
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function appends the NUL-terminated string
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.Fa src
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to the end of
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.Fa dst .
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It will append at most
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.Fa size
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- strlen(dst) - 1 bytes, NUL-terminating the result.
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.Sh RETURN VALUES
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The
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.Fn strlcpy
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and
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.Fn strlcat
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functions return the total length of the string they tried to
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create. For
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.Fn strlcpy
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that means the length of
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.Fa src .
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For
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.Fn strlcat
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that means the initial length of
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.Fa dst
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plus
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the length of
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.Fa src .
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While this may seem somewhat confusing it was done to make
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truncation detection simple.
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.Sh EXAMPLES
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The following code fragment illustrates the simple case:
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.Bd -literal -offset indent
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char *s, *p, buf[BUFSIZ];
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.Li ...
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(void)strlcpy(buf, s, sizeof(buf));
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(void)strlcat(buf, p, sizeof(buf));
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.Ed
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.Pp
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To detect truncation, perhaps while building a pathname, something
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like the following might be used:
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.Bd -literal -offset indent
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char *dir, *file, pname[MAXPATHNAMELEN];
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.Li ...
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if (strlcpy(pname, dir, sizeof(pname)) >= sizeof(pname))
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goto toolong;
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if (strlcat(pname, file, sizeof(pname)) >= sizeof(pname))
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goto toolong;
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.Ed
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.Pp
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Since we know how many characters we copied the first time, we can
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speed things up a bit by using a copy instead on an append:
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.Bd -literal -offset indent
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char *dir, *file, pname[MAXPATHNAMELEN];
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size_t n;
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.Li ...
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n = strlcpy(pname, dir, sizeof(pname));
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if (n >= sizeof(pname))
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goto toolong;
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if (strlcpy(pname + n, file, sizeof(pname) - n) >= sizeof(pname) - n)
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goto toolong;
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.Ed
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.Pp
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However, one may question the validity of such optimizations, as they
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defeat the whole purpose of
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.Fn strlcpy
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and
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.Fn strlcat .
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As a matter of fact, the first version of this manual page got it wrong.
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.Sh SEE ALSO
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.Xr snprintf 3 ,
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.Xr strncpy 3 ,
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.Xr strncat 3
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63
lib/libc/string/strlcpy.c
Normal file
63
lib/libc/string/strlcpy.c
Normal file
@ -0,0 +1,63 @@
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/* $OpenBSD: strlcpy.c,v 1.2 1998/11/06 04:33:16 wvdputte Exp $ */
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/*
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* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
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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
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
|
||||
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
||||
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||||
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||||
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
||||
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
||||
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
||||
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char *rcsid = "$OpenBSD: strlcpy.c,v 1.2 1998/11/06 04:33:16 wvdputte Exp $";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/types.h>
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#include <string.h>
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/*
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* Copy src to string dst of size siz. At most siz-1 characters
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* will be copied. Always NUL terminates (unless siz == 0).
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* Returns strlen(src); if retval >= siz, truncation occurred.
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*/
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size_t strlcpy(dst, src, siz)
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char *dst;
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const char *src;
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size_t siz;
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{
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register char *d = dst;
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register const char *s = src;
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register size_t n = siz;
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if (n == 0)
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return(strlen(s));
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while (*s != '\0') {
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if (n != 1) {
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*d++ = *s;
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n--;
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}
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s++;
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}
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*d = '\0';
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return(s - src); /* count does not include NUL */
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}
|
71
sys/libkern/strlcat.c
Normal file
71
sys/libkern/strlcat.c
Normal file
@ -0,0 +1,71 @@
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/* $OpenBSD: strlcat.c,v 1.1 1998/07/01 01:29:45 millert Exp $ */
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/*
|
||||
* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
|
||||
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
||||
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||||
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||||
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
||||
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
||||
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
||||
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
static char *rcsid = "$OpenBSD: strlcat.c,v 1.1 1998/07/01 01:29:45 millert Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
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#include <sys/types.h>
|
||||
#include <string.h>
|
||||
|
||||
/*
|
||||
* Appends src to string dst of size siz (unlike strncat, siz is the
|
||||
* full size of dst, not space left). At most siz-1 characters
|
||||
* will be copied. Always NUL terminates (unless siz == 0).
|
||||
* Returns strlen(src); if retval >= siz, truncation occurred.
|
||||
*/
|
||||
size_t strlcat(dst, src, siz)
|
||||
char *dst;
|
||||
const char *src;
|
||||
size_t siz;
|
||||
{
|
||||
register char *d = dst;
|
||||
register const char *s = src;
|
||||
register size_t n = siz;
|
||||
size_t dlen;
|
||||
|
||||
/* Find the end of dst and adjust bytes left */
|
||||
while (*d != '\0' && n != 0)
|
||||
d++;
|
||||
dlen = d - dst;
|
||||
n -= dlen;
|
||||
|
||||
if (n == 0)
|
||||
return(dlen + strlen(s));
|
||||
while (*s != '\0') {
|
||||
if (n != 1) {
|
||||
*d++ = *s;
|
||||
n--;
|
||||
}
|
||||
s++;
|
||||
}
|
||||
*d = '\0';
|
||||
|
||||
return(dlen + (s - src)); /* count does not include NUL */
|
||||
}
|
63
sys/libkern/strlcpy.c
Normal file
63
sys/libkern/strlcpy.c
Normal file
@ -0,0 +1,63 @@
|
||||
/* $OpenBSD: strlcpy.c,v 1.2 1998/11/06 04:33:16 wvdputte Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
|
||||
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
||||
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||||
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||||
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
||||
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
||||
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
||||
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
static char *rcsid = "$OpenBSD: strlcpy.c,v 1.2 1998/11/06 04:33:16 wvdputte Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <string.h>
|
||||
|
||||
/*
|
||||
* Copy src to string dst of size siz. At most siz-1 characters
|
||||
* will be copied. Always NUL terminates (unless siz == 0).
|
||||
* Returns strlen(src); if retval >= siz, truncation occurred.
|
||||
*/
|
||||
size_t strlcpy(dst, src, siz)
|
||||
char *dst;
|
||||
const char *src;
|
||||
size_t siz;
|
||||
{
|
||||
register char *d = dst;
|
||||
register const char *s = src;
|
||||
register size_t n = siz;
|
||||
|
||||
if (n == 0)
|
||||
return(strlen(s));
|
||||
while (*s != '\0') {
|
||||
if (n != 1) {
|
||||
*d++ = *s;
|
||||
n--;
|
||||
}
|
||||
s++;
|
||||
}
|
||||
*d = '\0';
|
||||
|
||||
return(s - src); /* count does not include NUL */
|
||||
}
|
Loading…
Reference in New Issue
Block a user