pcsc-lite  1.8.8
strlcpy.c
1 /* $OpenBSD: strlcpy.c,v 1.10 2005/08/08 08:05:37 espie 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 #ifdef HAVE_CONFIG_H
20 #include "config.h"
21 #endif
22 
23 #ifndef HAVE_STRLCPY
24 
25 #include <sys/types.h>
26 #include <string.h>
27 #include "strlcpycat.h"
28 
29 /*
30  * Copy src to string dst of size siz. At most siz-1 characters
31  * will be copied. Always NUL terminates (unless siz == 0).
32  * Returns strlen(src); if retval >= siz, truncation occurred.
33  */
34 size_t
35 strlcpy(char *dst, const char *src, size_t siz)
36 {
37  char *d = dst;
38  const char *s = src;
39  size_t n = siz;
40 
41  /* Copy as many bytes as will fit */
42  if (n != 0 && --n != 0) {
43  do {
44  if ((*d++ = *s++) == 0)
45  break;
46  } while (--n != 0);
47  }
48 
49  /* Not enough room in dst, add NUL and traverse rest of src */
50  if (n == 0) {
51  if (siz != 0)
52  *d = '\0'; /* NUL-terminate dst */
53  while (*s++)
54  ;
55  }
56 
57  return(s - src - 1); /* count does not include NUL */
58 }
59 
60 #endif
prototypes of strlcpy()/strlcat() imported from OpenBSD