make_malloc.c revision 1.3
1/* $NetBSD: make_malloc.c,v 1.3 2009/01/24 14:43:28 dsl Exp $ */ 2 3/*- 4 * Copyright (c) 2009 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__RCSID("$NetBSD: make_malloc.c,v 1.3 2009/01/24 14:43:28 dsl Exp $"); 31 32#include <stdio.h> 33#include <stdlib.h> 34#include <string.h> 35#include <errno.h> 36 37#include "make_malloc.h" 38 39#ifndef USE_EMALLOC 40/* 41 * enomem -- 42 * die when out of memory. 43 */ 44static void 45enomem(void) 46{ 47 extern char *progname; 48 49 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 50 exit(2); 51} 52 53/* 54 * bmake_malloc -- 55 * malloc, but die on error. 56 */ 57void * 58bmake_malloc(size_t len) 59{ 60 void *p; 61 62 if ((p = malloc(len)) == NULL) 63 enomem(); 64 return(p); 65} 66 67/* 68 * bmake_strdup -- 69 * strdup, but die on error. 70 */ 71char * 72bmake_strdup(const char *str) 73{ 74 size_t len; 75 char *p; 76 77 len = strlen(str) + 1; 78 if ((p = malloc(len)) == NULL) 79 enomem(); 80 return memcpy(p, str, len); 81} 82 83/* 84 * bmake_strndup -- 85 * strndup, but die on error. 86 */ 87char * 88bmake_strndup(const char *str, size_t max_len) 89{ 90 size_t len; 91 char *p; 92 93 if (str == NULL) 94 return NULL; 95 96 len = strlen(str); 97 if (len > max_len) 98 len = max_len; 99 p = bmake_malloc(len + 1); 100 memcpy(p, str, len); 101 p[len] = '\0'; 102 103 return(p); 104} 105 106/* 107 * bmake_realloc -- 108 * realloc, but die on error. 109 */ 110void * 111bmake_realloc(void *ptr, size_t size) 112{ 113 if ((ptr = realloc(ptr, size)) == NULL) 114 enomem(); 115 return(ptr); 116} 117#endif 118