diff --git a/lib/libc/string/bstring.3 b/lib/libc/string/bstring.3 index cb29a6db6b14..bb1a0505fafd 100644 --- a/lib/libc/string/bstring.3 +++ b/lib/libc/string/bstring.3 @@ -1,107 +1,113 @@ .\" Copyright (c) 1990, 1991, 1993 .\" The Regents of the University of California. All rights reserved. .\" .\" This code is derived from software contributed to Berkeley by .\" Chris Torek. .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. Neither the name of the University nor the names of its contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" @(#)bstring.3 8.1 (Berkeley) 6/4/93 .\" -.Dd June 4, 1993 +.Dd December 5, 2023 .Dt BSTRING 3 .Os .Sh NAME .Nm bcmp , .Nm bcopy , .Nm bzero , .Nm memccpy , .Nm memchr , .Nm memcmp , .Nm memcpy , .Nm memmove , .Nm memset .Nd byte string operations .Sh LIBRARY .Lb libc .Sh SYNOPSIS .In string.h .Ft int .Fn bcmp "const void *b1" "const void *b2" "size_t len" .Ft void .Fn bcopy "const void *src" "void *dst" "size_t len" .Ft void .Fn bzero "void *b" "size_t len" .Ft void * .Fn memchr "const void *b" "int c" "size_t len" .Ft int .Fn memcmp "const void *b1" "const void *b2" "size_t len" .Ft void * -.Fn memccpy "void *dst" "const void *src" "int c" "size_t len" +.Fo memccpy +.Fa "void * restrict dst" +.Fa "const void * restrict src" +.Fa "int c" +.Fa "size_t len" +.Fc .Ft void * .Fn memcpy "void *dst" "const void *src" "size_t len" .Ft void * .Fn memmove "void *dst" "const void *src" "size_t len" .Ft void * .Fn memset "void *b" "int c" "size_t len" .Sh DESCRIPTION These functions operate on variable length strings of bytes. They do not check for terminating null bytes as the routines listed in .Xr string 3 do. .Pp See the specific manual pages for more information. .Sh SEE ALSO .Xr bcmp 3 , .Xr bcopy 3 , .Xr bzero 3 , .Xr memccpy 3 , .Xr memchr 3 , .Xr memcmp 3 , +.Xr memccpy 3 , .Xr memcpy 3 , .Xr memmove 3 , .Xr memset 3 .Sh STANDARDS The functions .Fn memchr , .Fn memcmp , .Fn memcpy , .Fn memmove , and .Fn memset conform to .St -isoC . .Sh HISTORY The functions .Fn bzero and .Fn memccpy appeared in .Bx 4.3 ; the functions .Fn bcmp , .Fn bcopy , appeared in .Bx 4.2 . diff --git a/lib/libc/string/memccpy.3 b/lib/libc/string/memccpy.3 index fb2409ada846..fe543d9172d3 100644 --- a/lib/libc/string/memccpy.3 +++ b/lib/libc/string/memccpy.3 @@ -1,73 +1,100 @@ .\" Copyright (c) 1990, 1991, 1993 .\" The Regents of the University of California. All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. Neither the name of the University nor the names of its contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" @(#)memccpy.3 8.1 (Berkeley) 6/9/93 .\" -.Dd June 9, 1993 +.Dd December 5, 2023 .Dt MEMCCPY 3 .Os .Sh NAME .Nm memccpy .Nd copy string until character found .Sh LIBRARY .Lb libc .Sh SYNOPSIS .In string.h .Ft void * -.Fn memccpy "void *dst" "const void *src" "int c" "size_t len" +.Fo memccpy +.Fa "void * restrict dst" +.Fa "const void * restrict src" +.Fa "int c" +.Fa "size_t len" +.Fc .Sh DESCRIPTION The .Fn memccpy function copies bytes from string .Fa src to string .Fa dst . If the character .Fa c (as converted to an .Vt "unsigned char" ) occurs in the string .Fa src , the copy stops and a pointer to the byte after the copy of .Fa c in the string .Fa dst is returned. Otherwise, .Fa len bytes are copied, and a NULL pointer is returned. +If +.Fa src +and +.Fa dst +overlap, behavior is undefined. .Sh SEE ALSO .Xr bcopy 3 , .Xr memcpy 3 , .Xr memmove 3 , .Xr strcpy 3 +.Sh STANDARDS +The +.Fn memccpy +function conforms to +.St -p1003.1-2004 +and +.\" St -isoC-2024 . +ISO/IEC 9899:2024 (\(lqISO\~C23\(rq). .Sh HISTORY The .Fn memccpy function first appeared in -.Bx 4.4 . +.Bx 4.4 +and was first specified in the +.\" St -svid1 . +System\~V Interface Definition, First Edition (\(lqSVID1\(rq). +The +.Ft restrict +keyword was added to the prototype in +.Fx 5.0.0 +in accordance with the updated specification of +.St -p1003.1-2004 . diff --git a/lib/libc/string/memccpy.c b/lib/libc/string/memccpy.c index fd080d4293f4..5ef2dd6567ca 100644 --- a/lib/libc/string/memccpy.c +++ b/lib/libc/string/memccpy.c @@ -1,51 +1,51 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)memccpy.c 8.1 (Berkeley) 6/4/93"; #endif /* LIBC_SCCS and not lint */ #include void * -memccpy(void *t, const void *f, int c, size_t n) +memccpy(void * restrict t, const void * restrict f, int c, size_t n) { if (n) { unsigned char *tp = t; const unsigned char *fp = f; unsigned char uc = c; do { if ((*tp++ = *fp++) == uc) return (tp); } while (--n != 0); } return (0); }