1 #ifdef HAVE_CONFIG_H
2 #include "config.h"
3 #endif
4
5 #ifdef HAVE_STRNLEN
6
7 int dummy;
8
9 #else
10
11 /* ($)OpenBSD: strnlen.c,v 1.4 2012/04/26 01:22:31 matthew Exp $ */
12
13 /*
14 * Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com>
15 *
16 * Permission to use, copy, modify, and distribute this software for any
17 * purpose with or without fee is hereby granted, provided that the above
18 * copyright notice and this permission notice appear in all copies.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
21 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
22 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
23 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
24 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
25 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
26 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
27 */
28
29 #include <sys/types.h>
30 #include <string.h>
31
32 size_t
strnlen(const char * str,size_t maxlen)33 strnlen(const char *str, size_t maxlen)
34 {
35 const char *cp;
36
37 for (cp = str; maxlen != 0 && *cp != '\0'; cp++, maxlen--)
38 ;
39
40 return (size_t)(cp - str);
41 }
42
43 #endif
44