1 /* OPENBSD ORIGINAL: lib/libc/string/strlcpy.c */
3 /* $OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $ */
6 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
8 * Permission to use, copy, modify, and distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
24 #if defined(LIBC_SCCS) && !defined(lint)
25 static char *rcsid
= "$OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $";
26 #endif /* LIBC_SCCS and not lint */
28 #include <sys/types.h>
32 * Copy src to string dst of size siz. At most siz-1 characters
33 * will be copied. Always NUL terminates (unless siz == 0).
34 * Returns strlen(src); if retval >= siz, truncation occurred.
37 strlcpy(char *dst
, const char *src
, size_t siz
)
39 register char *d
= dst
;
40 register const char *s
= src
;
41 register size_t n
= siz
;
43 /* Copy as many bytes as will fit */
44 if (n
!= 0 && --n
!= 0) {
46 if ((*d
++ = *s
++) == 0)
51 /* Not enough room in dst, add NUL and traverse rest of src */
54 *d
= '\0'; /* NUL-terminate dst */
59 return(s
- src
- 1); /* count does not include NUL */
62 #endif /* !HAVE_STRLCPY */