1 dd038bc6 2021-09-21 thomas.ad /*	$OpenBSD: strndup.c,v 1.2 2015/08/31 02:53:57 guenther Exp $	*/
 2 dd038bc6 2021-09-21 thomas.ad 
 3 dd038bc6 2021-09-21 thomas.ad /*
 4 dd038bc6 2021-09-21 thomas.ad  * Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com>
 5 dd038bc6 2021-09-21 thomas.ad  *
 6 dd038bc6 2021-09-21 thomas.ad  * Permission to use, copy, modify, and distribute this software for any
 7 dd038bc6 2021-09-21 thomas.ad  * purpose with or without fee is hereby granted, provided that the above
 8 dd038bc6 2021-09-21 thomas.ad  * copyright notice and this permission notice appear in all copies.
 9 dd038bc6 2021-09-21 thomas.ad  *
10 dd038bc6 2021-09-21 thomas.ad  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 dd038bc6 2021-09-21 thomas.ad  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 dd038bc6 2021-09-21 thomas.ad  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 dd038bc6 2021-09-21 thomas.ad  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 dd038bc6 2021-09-21 thomas.ad  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 dd038bc6 2021-09-21 thomas.ad  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 dd038bc6 2021-09-21 thomas.ad  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 dd038bc6 2021-09-21 thomas.ad  */
18 dd038bc6 2021-09-21 thomas.ad 
19 dd038bc6 2021-09-21 thomas.ad #include <sys/types.h>
20 dd038bc6 2021-09-21 thomas.ad 
21 dd038bc6 2021-09-21 thomas.ad #include <stddef.h>
22 dd038bc6 2021-09-21 thomas.ad #include <stdlib.h>
23 dd038bc6 2021-09-21 thomas.ad #include <string.h>
24 dd038bc6 2021-09-21 thomas.ad 
25 dd038bc6 2021-09-21 thomas.ad char *
26 dd038bc6 2021-09-21 thomas.ad strndup(const char *str, size_t maxlen)
27 dd038bc6 2021-09-21 thomas.ad {
28 dd038bc6 2021-09-21 thomas.ad 	char *copy;
29 dd038bc6 2021-09-21 thomas.ad 	size_t len;
30 dd038bc6 2021-09-21 thomas.ad 
31 dd038bc6 2021-09-21 thomas.ad 	len = strnlen(str, maxlen);
32 dd038bc6 2021-09-21 thomas.ad 	copy = malloc(len + 1);
33 dd038bc6 2021-09-21 thomas.ad 	if (copy != NULL) {
34 dd038bc6 2021-09-21 thomas.ad 		(void)memcpy(copy, str, len);
35 dd038bc6 2021-09-21 thomas.ad 		copy[len] = '\0';
36 dd038bc6 2021-09-21 thomas.ad 	}
37 dd038bc6 2021-09-21 thomas.ad 
38 dd038bc6 2021-09-21 thomas.ad 	return copy;
39 dd038bc6 2021-09-21 thomas.ad }