1 /* $NetBSD: make_malloc.c,v 1.19 2020/09/13 15:15:51 rillig 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 <stdio.h> 30 #include <stdlib.h> 31 #include <string.h> 32 #include <errno.h> 33 34 #include "make.h" 35 36 MAKE_RCSID("$NetBSD: make_malloc.c,v 1.19 2020/09/13 15:15:51 rillig Exp $"); 37 38 #ifndef USE_EMALLOC 39 static MAKE_ATTR_DEAD void enomem(void); 40 41 /* die when out of memory. */ 42 static MAKE_ATTR_DEAD void 43 enomem(void) 44 { 45 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(ENOMEM)); 46 exit(2); 47 } 48 49 /* malloc, but die on error. */ 50 void * 51 bmake_malloc(size_t len) 52 { 53 void *p; 54 55 if ((p = malloc(len)) == NULL) 56 enomem(); 57 return p; 58 } 59 60 /* strdup, but die on error. */ 61 char * 62 bmake_strdup(const char *str) 63 { 64 size_t len; 65 char *p; 66 67 len = strlen(str) + 1; 68 if ((p = malloc(len)) == NULL) 69 enomem(); 70 return memcpy(p, str, len); 71 } 72 73 /* Allocate a string starting from str with exactly len characters. */ 74 char * 75 bmake_strldup(const char *str, size_t len) 76 { 77 char *p = bmake_malloc(len + 1); 78 memcpy(p, str, len); 79 p[len] = '\0'; 80 return p; 81 } 82 83 /* realloc, but die on error. */ 84 void * 85 bmake_realloc(void *ptr, size_t size) 86 { 87 if ((ptr = realloc(ptr, size)) == NULL) 88 enomem(); 89 return ptr; 90 } 91 #endif 92 93 /* Allocate a string from start up to but excluding end. */ 94 char * 95 bmake_strsedup(const char *start, const char *end) 96 { 97 return bmake_strldup(start, (size_t)(end - start)); 98 } 99