Line | Count | Source |
1 | | /* $OpenBSD: strlcpy.c,v 1.5 2001/05/13 15:40:16 deraadt Exp $ */ |
2 | | |
3 | | /* |
4 | | * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> |
5 | | * All rights reserved. |
6 | | * |
7 | | * Redistribution and use in source and binary forms, with or without |
8 | | * modification, are permitted provided that the following conditions |
9 | | * are met: |
10 | | * 1. Redistributions of source code must retain the above copyright |
11 | | * notice, this list of conditions and the following disclaimer. |
12 | | * 2. Redistributions in binary form must reproduce the above copyright |
13 | | * notice, this list of conditions and the following disclaimer in the |
14 | | * documentation and/or other materials provided with the distribution. |
15 | | * 3. The name of the author may not be used to endorse or promote products |
16 | | * derived from this software without specific prior written permission. |
17 | | * |
18 | | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
19 | | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY |
20 | | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL |
21 | | * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
22 | | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
23 | | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
24 | | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
25 | | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
26 | | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
27 | | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | | */ |
29 | | |
30 | | #if defined(LIBC_SCCS) && !defined(lint) |
31 | | static char *rcsid = "$OpenBSD: strlcpy.c,v 1.5 2001/05/13 15:40:16 deraadt Exp $"; |
32 | | #endif /* LIBC_SCCS and not lint */ |
33 | | |
34 | | #include "event2/event-config.h" |
35 | | #include "evconfig-private.h" |
36 | | |
37 | | #include <sys/types.h> |
38 | | |
39 | | #ifndef EVENT__HAVE_STRLCPY |
40 | | #include "strlcpy-internal.h" |
41 | | |
42 | | /* |
43 | | * Copy src to string dst of size siz. At most siz-1 characters |
44 | | * will be copied. Always NUL terminates (unless siz == 0). |
45 | | * Returns strlen(src); if retval >= siz, truncation occurred. |
46 | | */ |
47 | | size_t event_strlcpy_(char *dst, const char *src, size_t siz) |
48 | 0 | { |
49 | 0 | register char *d = dst; |
50 | 0 | register const char *s = src; |
51 | 0 | register size_t n = siz; |
52 | | |
53 | | /* Copy as many bytes as will fit */ |
54 | 0 | if (n != 0 && --n != 0) { |
55 | 0 | do { |
56 | 0 | if ((*d++ = *s++) == 0) |
57 | 0 | break; |
58 | 0 | } while (--n != 0); |
59 | 0 | } |
60 | | |
61 | | /* Not enough room in dst, add NUL and traverse rest of src */ |
62 | 0 | if (n == 0) { |
63 | 0 | if (siz != 0) |
64 | 0 | *d = '\0'; /* NUL-terminate dst */ |
65 | 0 | while (*s++) |
66 | 0 | ; |
67 | 0 | } |
68 | |
|
69 | 0 | return (s - src - 1); /* count does not include NUL */ |
70 | 0 | } |
71 | | #endif |