1 /* $OpenBSD: strlcat.c,v 1.8 2001/05/13 15:40:15 deraadt Exp $ */
4 * Copyright (c) 1998, 2003-2005, 2010-2011
5 * Todd C. Miller <Todd.Miller@courtesan.com>
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
22 #include <sys/types.h>
28 * Appends src to string dst of size siz (unlike strncat, siz is the
29 * full size of dst, not space left). At most siz-1 characters
30 * will be copied. Always NUL terminates (unless siz <= strlen(dst)).
31 * Returns strlen(src) + MIN(siz, strlen(initial dst)).
32 * If retval >= siz, truncation occurred.
35 strlcat(char *dst, const char *src, size_t siz)
42 /* Find the end of dst and adjust bytes left but don't go past end */
43 while (n-- != 0 && *d != '\0')
49 return dlen + strlen(s);
59 return dlen + (s - src); /* count does not include NUL */