Mercurial > archived > louis > perso > liblxcstats
comparison compat/strlcpy.c @ 0:6ce4443e7545
Add the draft of an API to collect statistics on LXC
author | Louis Opter <kalessin@kalessin.fr> |
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date | Wed, 29 Dec 2010 23:28:14 +0100 |
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1 /* $OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $ */ | |
2 | |
3 /* | |
4 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> | |
5 * | |
6 * Permission to use, copy, modify, and distribute this software for any | |
7 * purpose with or without fee is hereby granted, provided that the above | |
8 * copyright notice and this permission notice appear in all copies. | |
9 * | |
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
17 */ | |
18 | |
19 #include <sys/types.h> | |
20 #include <string.h> | |
21 | |
22 /* | |
23 * Copy src to string dst of size siz. At most siz-1 characters | |
24 * will be copied. Always NUL terminates (unless siz == 0). | |
25 * Returns strlen(src); if retval >= siz, truncation occurred. | |
26 */ | |
27 size_t | |
28 _lxcst_strlcpy(char *dst, const char *src, size_t siz) | |
29 { | |
30 char *d = dst; | |
31 const char *s = src; | |
32 size_t n = siz; | |
33 | |
34 /* Copy as many bytes as will fit */ | |
35 if (n != 0) { | |
36 while (--n != 0) { | |
37 if ((*d++ = *s++) == '\0') | |
38 break; | |
39 } | |
40 } | |
41 | |
42 /* Not enough room in dst, add NUL and traverse rest of src */ | |
43 if (n == 0) { | |
44 if (siz != 0) | |
45 *d = '\0'; /* NUL-terminate dst */ | |
46 while (*s++) | |
47 ; | |
48 } | |
49 | |
50 return(s - src - 1); /* count does not include NUL */ | |
51 } |