libite 2.6.1
strlcpy.c
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1/* $OpenBSD: strlcpy.c,v 1.12 2015/01/15 03:54:12 millert Exp $ */
2
3/*
4 * Copyright (c) 1998, 2015 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
25
26
27#include <sys/types.h>
28#include <string.h>
29
30#ifndef strlcpy
43size_t
44strlcpy(char *dst, const char *src, size_t dsize)
45{
46 const char *osrc = src;
47 size_t nleft = dsize;
48
49 /* Copy as many bytes as will fit. */
50 if (nleft != 0) {
51 while (--nleft != 0) {
52 if ((*dst++ = *src++) == '\0')
53 break;
54 }
55 }
56
57 /* Not enough room in dst, add NUL and traverse rest of src. */
58 if (nleft == 0) {
59 if (dsize != 0)
60 *dst = '\0'; /* NUL-terminate dst */
61 while (*src++)
62 ;
63 }
64
65 return(src - osrc - 1); /* count does not include NUL */
66}
67#endif
size_t strlcpy(char *dst, const char *src, size_t dsize)
Definition strlcpy.c:44