1 /* $Id: compat_strndup.c,v 1.3 2020/06/15 20:19:39 schwarze Exp $ */ 2 /* $OpenBSD: strndup.c,v 1.3 2019/01/25 00:19:25 millert Exp $ */ 3 4 /* 5 * Copyright (c) 2010 Todd C. Miller <millert@openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 #include "config.h" 20 21 #include <sys/types.h> 22 23 #include <stdlib.h> 24 #include <string.h> 25 26 char * 27 strndup(const char *str, size_t maxlen) 28 { 29 char *copy; 30 size_t len; 31 32 for (len = 0; len < maxlen && str[len] != '\0'; len++) 33 continue; 34 35 copy = malloc(len + 1); 36 if (copy != NULL) { 37 (void)memcpy(copy, str, len); 38 copy[len] = '\0'; 39 } 40 41 return copy; 42 } 43