Annotation of dgamelaunch-openbsd/strlcpy.c, Revision 1.1.1.1
1.1 rubenllo 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 =
32: "$OpenBSD: strlcpy.c,v 1.5 2001/05/13 15:40:16 deraadt Exp $";
33: #endif /* LIBC_SCCS and not lint */
34:
35: #include <sys/types.h>
36: #include <string.h>
37:
38: /*
39: * Copy src to string dst of size siz. At most siz-1 characters
40: * will be copied. Always NUL terminates (unless siz == 0).
41: * Returns strlen(src); if retval >= siz, truncation occurred.
42: */
43: size_t
44: strlcpy (dst, src, siz)
45: char *dst;
46: const char *src;
47: size_t siz;
48: {
49: register char *d = dst;
50: register const char *s = src;
51: register size_t n = siz;
52:
53: /* Copy as many bytes as will fit */
54: if (n != 0 && --n != 0)
55: {
56: do
57: {
58: if ((*d++ = *s++) == 0)
59: break;
60: }
61: while (--n != 0);
62: }
63:
64: /* Not enough room in dst, add NUL and traverse rest of src */
65: if (n == 0)
66: {
67: if (siz != 0)
68: *d = '\0'; /* NUL-terminate dst */
69: while (*s++)
70: ;
71: }
72:
73: return (s - src - 1); /* count does not include NUL */
74: }
CVSweb