1f0eca40aSKonstantin Belousov /* $NetBSD: strndup.c,v 1.3 2007/01/14 23:41:24 cbiere Exp $ */ 2f0eca40aSKonstantin Belousov 3f0eca40aSKonstantin Belousov /* 4f0eca40aSKonstantin Belousov * Copyright (c) 1988, 1993 5f0eca40aSKonstantin Belousov * The Regents of the University of California. All rights reserved. 6f0eca40aSKonstantin Belousov * 7f0eca40aSKonstantin Belousov * Redistribution and use in source and binary forms, with or without 8f0eca40aSKonstantin Belousov * modification, are permitted provided that the following conditions 9f0eca40aSKonstantin Belousov * are met: 10f0eca40aSKonstantin Belousov * 1. Redistributions of source code must retain the above copyright 11f0eca40aSKonstantin Belousov * notice, this list of conditions and the following disclaimer. 12f0eca40aSKonstantin Belousov * 2. Redistributions in binary form must reproduce the above copyright 13f0eca40aSKonstantin Belousov * notice, this list of conditions and the following disclaimer in the 14f0eca40aSKonstantin Belousov * documentation and/or other materials provided with the distribution. 15f0eca40aSKonstantin Belousov * 4. Neither the name of the University nor the names of its contributors 16f0eca40aSKonstantin Belousov * may be used to endorse or promote products derived from this software 17f0eca40aSKonstantin Belousov * without specific prior written permission. 18f0eca40aSKonstantin Belousov * 19f0eca40aSKonstantin Belousov * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20f0eca40aSKonstantin Belousov * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21f0eca40aSKonstantin Belousov * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22f0eca40aSKonstantin Belousov * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23f0eca40aSKonstantin Belousov * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24f0eca40aSKonstantin Belousov * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25f0eca40aSKonstantin Belousov * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26f0eca40aSKonstantin Belousov * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27f0eca40aSKonstantin Belousov * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28f0eca40aSKonstantin Belousov * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29f0eca40aSKonstantin Belousov * SUCH DAMAGE. 30f0eca40aSKonstantin Belousov */ 31f0eca40aSKonstantin Belousov 32f0eca40aSKonstantin Belousov #include <sys/cdefs.h> 33f0eca40aSKonstantin Belousov __FBSDID("$FreeBSD$"); 34f0eca40aSKonstantin Belousov 35f0eca40aSKonstantin Belousov #include <stddef.h> 36f0eca40aSKonstantin Belousov #include <stdlib.h> 37f0eca40aSKonstantin Belousov #include <string.h> 38f0eca40aSKonstantin Belousov 39f0eca40aSKonstantin Belousov char * 40f0eca40aSKonstantin Belousov strndup(const char *str, size_t n) 41f0eca40aSKonstantin Belousov { 42f0eca40aSKonstantin Belousov size_t len; 43f0eca40aSKonstantin Belousov char *copy; 44f0eca40aSKonstantin Belousov 45f0eca40aSKonstantin Belousov for (len = 0; len < n && str[len]; len++) 46f0eca40aSKonstantin Belousov continue; 47f0eca40aSKonstantin Belousov 48f0eca40aSKonstantin Belousov if ((copy = malloc(len + 1)) == NULL) 49f0eca40aSKonstantin Belousov return (NULL); 50f0eca40aSKonstantin Belousov memcpy(copy, str, len); 51f0eca40aSKonstantin Belousov copy[len] = '\0'; 52f0eca40aSKonstantin Belousov return (copy); 53f0eca40aSKonstantin Belousov } 54