1 /* $OpenBSD: strndup.c,v 1.1 2010/05/18 22:24:55 tedu Exp $ */
2
3 /*
4 * Copyright (c) 2010 Todd C. Miller <[email protected]>
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 #include <sys/cdefs.h>
20 __FBSDID("$FreeBSD$");
21
22 #include <stddef.h>
23 #include <stdlib.h>
24 #include <string.h>
25
26 char *
strndup(const char * str,size_t maxlen)27 strndup(const char *str, size_t maxlen)
28 {
29 char *copy;
30 size_t len;
31
32 len = strnlen(str, maxlen);
33 copy = malloc(len + 1);
34 if (copy != NULL) {
35 (void)memcpy(copy, str, len);
36 copy[len] = '\0';
37 }
38
39 return copy;
40 }
41