1 /* $NetBSD: make_malloc.c,v 1.18 2020/09/02 06:10:44 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 #ifdef MAKE_NATIVE 30 #include <sys/cdefs.h> 31 __RCSID("$NetBSD: make_malloc.c,v 1.18 2020/09/02 06:10:44 rillig Exp $"); 32 #endif 33 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <errno.h> 38 39 #include "make.h" 40 41 #ifndef USE_EMALLOC 42 static MAKE_ATTR_DEAD void enomem(void); 43 44 /* die when out of memory. */ 45 static MAKE_ATTR_DEAD void 46 enomem(void) 47 { 48 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(ENOMEM)); 49 exit(2); 50 } 51 52 /* malloc, but die on error. */ 53 void * 54 bmake_malloc(size_t len) 55 { 56 void *p; 57 58 if ((p = malloc(len)) == NULL) 59 enomem(); 60 return p; 61 } 62 63 /* strdup, but die on error. */ 64 char * 65 bmake_strdup(const char *str) 66 { 67 size_t len; 68 char *p; 69 70 len = strlen(str) + 1; 71 if ((p = malloc(len)) == NULL) 72 enomem(); 73 return memcpy(p, str, len); 74 } 75 76 /* Allocate a string starting from str with exactly len characters. */ 77 char * 78 bmake_strldup(const char *str, size_t len) 79 { 80 char *p = bmake_malloc(len + 1); 81 memcpy(p, str, len); 82 p[len] = '\0'; 83 return p; 84 } 85 86 /* realloc, but die on error. */ 87 void * 88 bmake_realloc(void *ptr, size_t size) 89 { 90 if ((ptr = realloc(ptr, size)) == NULL) 91 enomem(); 92 return ptr; 93 } 94 #endif 95 96 /* Allocate a string from start up to but excluding end. */ 97 char * 98 bmake_strsedup(const char *start, const char *end) 99 { 100 return bmake_strldup(start, (size_t)(end - start)); 101 } 102