1/*	$OpenBSD: strnlen.c,v 1.3 2010/06/02 12:58:12 millert Exp $	*/
2
3/*
4 * Copyright (c) 2010 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/* OPENBSD ORIGINAL: lib/libc/string/strnlen.c */
20
21#include "config.h"
22#ifndef HAVE_STRNLEN
23#include <sys/types.h>
24
25#include <string.h>
26
27size_t
28strnlen(const char *str, size_t maxlen)
29{
30	const char *cp;
31
32	for (cp = str; maxlen != 0 && *cp != '\0'; cp++, maxlen--)
33		;
34
35	return (size_t)(cp - str);
36}
37#endif
38