1 #ifdef HAVE_CONFIG_H
2 #include "config.h"
3 #endif
4 
5 #ifdef HAVE_STRLCPY
6 
7 int dummy;
8 
9 #else
10 
11 /*	$OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $	*/
12 
13 /*
14  * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
15  *
16  * Permission to use, copy, modify, and distribute this software for any
17  * purpose with or without fee is hereby granted, provided that the above
18  * copyright notice and this permission notice appear in all copies.
19  *
20  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
21  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
22  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
23  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
24  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
25  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
26  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
27  */
28 
29 #include <sys/types.h>
30 #include <string.h>
31 
32 /*
33  * Copy src to string dst of size siz.  At most siz-1 characters
34  * will be copied.  Always NUL terminates (unless siz == 0).
35  * Returns strlen(src); if retval >= siz, truncation occurred.
36  */
37 size_t
38 strlcpy(char *dst, const char *src, size_t siz)
39 {
40 	char *d = dst;
41 	const char *s = src;
42 	size_t n = siz;
43 
44 	/* Copy as many bytes as will fit */
45 	if (n != 0) {
46 		while (--n != 0) {
47 			if ((*d++ = *s++) == '\0')
48 				break;
49 		}
50 	}
51 
52 	/* Not enough room in dst, add NUL and traverse rest of src */
53 	if (n == 0) {
54 		if (siz != 0)
55 			*d = '\0';		/* NUL-terminate dst */
56 		while (*s++)
57 			;
58 	}
59 
60 	return(s - src - 1);	/* count does not include NUL */
61 }
62 
63 #endif
64