xref: /freebsd/contrib/mandoc/compat_strndup.c (revision 6d38604fc532a3fc060788e3ce40464b46047eaf)
1*6d38604fSBaptiste Daroussin /*	$Id: compat_strndup.c,v 1.3 2020/06/15 20:19:39 schwarze Exp $	*/
2*6d38604fSBaptiste Daroussin /*	$OpenBSD: strndup.c,v 1.3 2019/01/25 00:19:25 millert Exp $	*/
361d06d6bSBaptiste Daroussin 
461d06d6bSBaptiste Daroussin /*
5*6d38604fSBaptiste Daroussin  * Copyright (c) 2010 Todd C. Miller <millert@openbsd.org>
661d06d6bSBaptiste Daroussin  *
761d06d6bSBaptiste Daroussin  * Permission to use, copy, modify, and distribute this software for any
861d06d6bSBaptiste Daroussin  * purpose with or without fee is hereby granted, provided that the above
961d06d6bSBaptiste Daroussin  * copyright notice and this permission notice appear in all copies.
1061d06d6bSBaptiste Daroussin  *
1161d06d6bSBaptiste Daroussin  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
1261d06d6bSBaptiste Daroussin  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1361d06d6bSBaptiste Daroussin  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
1461d06d6bSBaptiste Daroussin  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
1561d06d6bSBaptiste Daroussin  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
1661d06d6bSBaptiste Daroussin  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
1761d06d6bSBaptiste Daroussin  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1861d06d6bSBaptiste Daroussin  */
19*6d38604fSBaptiste Daroussin #include "config.h"
2061d06d6bSBaptiste Daroussin 
2161d06d6bSBaptiste Daroussin #include <sys/types.h>
2261d06d6bSBaptiste Daroussin 
2361d06d6bSBaptiste Daroussin #include <stdlib.h>
2461d06d6bSBaptiste Daroussin #include <string.h>
2561d06d6bSBaptiste Daroussin 
2661d06d6bSBaptiste Daroussin char *
strndup(const char * str,size_t maxlen)2761d06d6bSBaptiste Daroussin strndup(const char *str, size_t maxlen)
2861d06d6bSBaptiste Daroussin {
2961d06d6bSBaptiste Daroussin 	char *copy;
3061d06d6bSBaptiste Daroussin 	size_t len;
3161d06d6bSBaptiste Daroussin 
3261d06d6bSBaptiste Daroussin 	for (len = 0; len < maxlen && str[len] != '\0'; len++)
3361d06d6bSBaptiste Daroussin 		continue;
3461d06d6bSBaptiste Daroussin 
3561d06d6bSBaptiste Daroussin 	copy = malloc(len + 1);
3661d06d6bSBaptiste Daroussin 	if (copy != NULL) {
3761d06d6bSBaptiste Daroussin 		(void)memcpy(copy, str, len);
3861d06d6bSBaptiste Daroussin 		copy[len] = '\0';
3961d06d6bSBaptiste Daroussin 	}
4061d06d6bSBaptiste Daroussin 
4161d06d6bSBaptiste Daroussin 	return copy;
4261d06d6bSBaptiste Daroussin }
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