1 /* $OpenBSD: strlcat.c,v 1.8 2001/05/13 15:40:15 deraadt Exp $ */
4 * Copyright (c) 1998, 2003-2005 Todd C. Miller <Todd.Miller@courtesan.com>
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 #include <sys/types.h>
26 __unused static const char rcsid[] = "$Sudo: strlcat.c,v 1.4.2.2 2007/06/12 01:28:42 millert Exp $";
31 * Appends src to string dst of size siz (unlike strncat, siz is the
32 * full size of dst, not space left). At most siz-1 characters
33 * will be copied. Always NUL terminates (unless siz <= strlen(dst)).
34 * Returns strlen(src) + MIN(siz, strlen(initial dst)).
35 * If retval >= siz, truncation occurred.
38 strlcat(dst, src, siz)
48 /* Find the end of dst and adjust bytes left but don't go past end */
49 while (n-- != 0 && *d != '\0')
55 return(dlen + strlen(s));
65 return(dlen + (s - src)); /* count does not include NUL */