Commit | Line | Data |
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a09e091a JB |
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 | */ | |
31 | size_t | |
32 | strlcpy(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 |