1/* from openssh 4.3p2 compat/strlcpy.c */
2/*
3 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18/* OPENBSD ORIGINAL: lib/libc/string/strlcpy.c */
19
20#include <config.h>
21#ifndef HAVE_STRLCPY
22
23#include <sys/types.h>
24#include <string.h>
25
26/*
27 * Copy src to string dst of size siz.  At most siz-1 characters
28 * will be copied.  Always NUL terminates (unless siz == 0).
29 * Returns strlen(src); if retval >= siz, truncation occurred.
30 */
31size_t
32strlcpy(char *dst, const char *src, size_t siz)
33{
34	char *d = dst;
35	const char *s = src;
36	size_t n = siz;
37
38	/* Copy as many bytes as will fit */
39	if (n != 0 && --n != 0) {
40		do {
41			if ((*d++ = *s++) == 0)
42				break;
43		} while (--n != 0);
44	}
45
46	/* Not enough room in dst, add NUL and traverse rest of src */
47	if (n == 0) {
48		if (siz != 0)
49			*d = '\0';		/* NUL-terminate dst */
50		while (*s++)
51			;
52	}
53
54	return(s - src - 1);	/* count does not include NUL */
55}
56
57#endif /* !HAVE_STRLCPY */
58