1/*
2 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND TODD C. MILLER DISCLAIMS ALL
9 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
10 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL TODD C. MILLER BE LIABLE
11 * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#ifdef HAVE_DIX_CONFIG_H
18#include <dix-config.h>
19#endif
20
21#include <sys/types.h>
22#include <string.h>
23#include "os.h"
24
25#ifndef HAVE_STRLCPY
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    register char *d = dst;
35    register const char *s = src;
36    register 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    return s - src - 1;         /* count does not include NUL */
54}
55#endif
56