strlcat.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*
    2  * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. The name of the author may not be used to endorse or promote products
   14  *    derived from this software without specific prior written permission.
   15  *
   16  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
   17  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
   18  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
   19  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
   22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   26  *
   27  * $OpenBSD: strlcat.c,v 1.2 1999/06/17 16:28:58 millert Exp $
   28  * $FreeBSD: src/lib/libc/string/strlcat.c,v 1.2.4.2 2001/07/09 23:30:06 obrien Exp $
   29  * $DragonFly: src/sys/libkern/strlcat.c,v 1.5 2007/06/07 23:45:02 dillon Exp $
   30  */
   31 
   32 #include <sys/types.h>
   33 #include <sys/libkern.h>
   34 
   35 /*
   36  * Appends src to string dst of size siz (unlike strncat, siz is the
   37  * full size of dst, not space left).  At most siz-1 characters
   38  * will be copied.  Always NUL terminates (unless siz <= strlen(dst)).
   39  * Returns strlen(initial dst) + strlen(src); if retval >= siz,
   40  * truncation occurred.
   41  */
   42 size_t
   43 strlcat(char *dst, const char *src, size_t siz)
   44 {
   45         char *d = dst;
   46         const char *s = src;
   47         size_t n = siz;
   48         size_t dlen;
   49 
   50         /* Find the end of dst and adjust bytes left but don't go past end */
   51         while (n-- != 0 && *d != '\0')
   52                 d++;
   53         dlen = d - dst;
   54         n = siz - dlen;
   55 
   56         if (n == 0)
   57                 return(dlen + strlen(s));
   58         while (*s != '\0') {
   59                 if (n != 1) {
   60                         *d++ = *s;
   61                         n--;
   62                 }
   63                 s++;
   64         }
   65         *d = '\0';
   66 
   67         return(dlen + (s - src));       /* count does not include NUL */
   68 }

Cache object: 84ced898ac4072a362c253a5a7700827

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/libkern/strlcat.c

FreeBSD/Linux Kernel Cross Reference
sys/libkern/strlcat.c