2 83f0f95a 2022-09-29 op * Copyright (c) 1998, 2015 Todd C. Miller <millert@openbsd.org>
4 83f0f95a 2022-09-29 op * Permission to use, copy, modify, and distribute this software for any
5 83f0f95a 2022-09-29 op * purpose with or without fee is hereby granted, provided that the above
6 83f0f95a 2022-09-29 op * copyright notice and this permission notice appear in all copies.
8 83f0f95a 2022-09-29 op * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 83f0f95a 2022-09-29 op * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 83f0f95a 2022-09-29 op * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 83f0f95a 2022-09-29 op * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 83f0f95a 2022-09-29 op * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 83f0f95a 2022-09-29 op * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 83f0f95a 2022-09-29 op * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 83f0f95a 2022-09-29 op #include <sys/types.h>
18 83f0f95a 2022-09-29 op #include <string.h>
21 83f0f95a 2022-09-29 op * Copy string src to buffer dst of size dsize. At most dsize-1
22 83f0f95a 2022-09-29 op * chars will be copied. Always NUL terminates (unless dsize == 0).
23 83f0f95a 2022-09-29 op * Returns strlen(src); if retval >= dsize, truncation occurred.
26 83f0f95a 2022-09-29 op strlcpy(char *dst, const char *src, size_t dsize)
28 83f0f95a 2022-09-29 op const char *osrc = src;
29 83f0f95a 2022-09-29 op size_t nleft = dsize;
31 83f0f95a 2022-09-29 op /* Copy as many bytes as will fit. */
32 83f0f95a 2022-09-29 op if (nleft != 0) {
33 83f0f95a 2022-09-29 op while (--nleft != 0) {
34 83f0f95a 2022-09-29 op if ((*dst++ = *src++) == '\0')
39 83f0f95a 2022-09-29 op /* Not enough room in dst, add NUL and traverse rest of src. */
40 83f0f95a 2022-09-29 op if (nleft == 0) {
41 83f0f95a 2022-09-29 op if (dsize != 0)
42 83f0f95a 2022-09-29 op *dst = '\0'; /* NUL-terminate dst */
43 83f0f95a 2022-09-29 op while (*src++)
47 83f0f95a 2022-09-29 op return(src - osrc - 1); /* count does not include NUL */