1 /* $NetBSD: strlcpy.c,v 1.3 2007/06/04 18:19:27 christos Exp $ */
2 /* $OpenBSD: strlcpy.c,v 1.7 2003/04/12 21:56:39 millert Exp $ */
5 * Copyright (c) 1998 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 TODD C. MILLER DISCLAIMS ALL
12 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
13 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL TODD C. MILLER BE LIABLE
14 * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
16 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
17 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
25 #include <sys/cdefs.h>
27 #include <sys/types.h>
31 * Copy src to string dst of size siz. At most siz-1 characters
32 * will be copied. Always NUL terminates (unless siz == 0).
33 * Returns strlen(src); if retval >= siz, truncation occurred.
36 strlcpy(char *dst, const char *src, size_t siz)
45 /* Copy as many bytes as will fit */
46 if (n != 0 && --n != 0) {
48 if ((*d++ = *s++) == 0)
53 /* Not enough room in dst, add NUL and traverse rest of src */
56 *d = '\0'; /* NUL-terminate dst */
61 return(s - src - 1); /* count does not include NUL */