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1 12042ad7 2021-01-21 op /*
2 12042ad7 2021-01-21 op * Copyright (c) 1998, 2015 Todd C. Miller <millert@openbsd.org>
3 12042ad7 2021-01-21 op *
4 12042ad7 2021-01-21 op * Permission to use, copy, modify, and distribute this software for any
5 12042ad7 2021-01-21 op * purpose with or without fee is hereby granted, provided that the above
6 12042ad7 2021-01-21 op * copyright notice and this permission notice appear in all copies.
7 12042ad7 2021-01-21 op *
8 12042ad7 2021-01-21 op * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 12042ad7 2021-01-21 op * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 12042ad7 2021-01-21 op * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 12042ad7 2021-01-21 op * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 12042ad7 2021-01-21 op * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 12042ad7 2021-01-21 op * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 12042ad7 2021-01-21 op * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 12042ad7 2021-01-21 op */
16 12042ad7 2021-01-21 op
17 76898714 2021-02-12 op #include "../config.h"
18 76898714 2021-02-12 op
19 12042ad7 2021-01-21 op #include <sys/types.h>
20 12042ad7 2021-01-21 op #include <string.h>
21 12042ad7 2021-01-21 op
22 12042ad7 2021-01-21 op /*
23 12042ad7 2021-01-21 op * Copy string src to buffer dst of size dsize. At most dsize-1
24 12042ad7 2021-01-21 op * chars will be copied. Always NUL terminates (unless dsize == 0).
25 12042ad7 2021-01-21 op * Returns strlen(src); if retval >= dsize, truncation occurred.
26 12042ad7 2021-01-21 op */
27 12042ad7 2021-01-21 op size_t
28 12042ad7 2021-01-21 op strlcpy(char *dst, const char *src, size_t dsize)
29 12042ad7 2021-01-21 op {
30 12042ad7 2021-01-21 op const char *osrc = src;
31 12042ad7 2021-01-21 op size_t nleft = dsize;
32 12042ad7 2021-01-21 op
33 12042ad7 2021-01-21 op /* Copy as many bytes as will fit. */
34 12042ad7 2021-01-21 op if (nleft != 0) {
35 12042ad7 2021-01-21 op while (--nleft != 0) {
36 12042ad7 2021-01-21 op if ((*dst++ = *src++) == '\0')
37 12042ad7 2021-01-21 op break;
38 12042ad7 2021-01-21 op }
39 12042ad7 2021-01-21 op }
40 12042ad7 2021-01-21 op
41 12042ad7 2021-01-21 op /* Not enough room in dst, add NUL and traverse rest of src. */
42 12042ad7 2021-01-21 op if (nleft == 0) {
43 12042ad7 2021-01-21 op if (dsize != 0)
44 12042ad7 2021-01-21 op *dst = '\0'; /* NUL-terminate dst */
45 12042ad7 2021-01-21 op while (*src++)
46 12042ad7 2021-01-21 op ;
47 12042ad7 2021-01-21 op }
48 12042ad7 2021-01-21 op
49 12042ad7 2021-01-21 op return(src - osrc - 1); /* count does not include NUL */
50 12042ad7 2021-01-21 op }