1 /* $NetBSD: make_malloc.c,v 1.26 2022/01/07 08:30:04 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 <errno.h> 30 31 #include "make.h" 32 33 MAKE_RCSID("$NetBSD: make_malloc.c,v 1.26 2022/01/07 08:30:04 rillig Exp $"); 34 35 #ifndef USE_EMALLOC 36 37 /* die when out of memory. */ 38 static MAKE_ATTR_DEAD void enomem(void)39 enomem(void) 40 { 41 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(ENOMEM)); 42 exit(2); 43 } 44 45 /* malloc, but die on error. */ 46 void * bmake_malloc(size_t len)47 bmake_malloc(size_t len) 48 { 49 void *p; 50 51 if ((p = malloc(len)) == NULL) 52 enomem(); 53 return p; 54 } 55 56 /* strdup, but die on error. */ 57 char * bmake_strdup(const char * str)58 bmake_strdup(const char *str) 59 { 60 size_t size; 61 char *p; 62 63 size = strlen(str) + 1; 64 p = bmake_malloc(size); 65 return memcpy(p, str, size); 66 } 67 68 /* Allocate a string starting from str with exactly len characters. */ 69 char * bmake_strldup(const char * str,size_t len)70 bmake_strldup(const char *str, size_t len) 71 { 72 char *p = bmake_malloc(len + 1); 73 memcpy(p, str, len); 74 p[len] = '\0'; 75 return p; 76 } 77 78 /* realloc, but die on error. */ 79 void * bmake_realloc(void * ptr,size_t size)80 bmake_realloc(void *ptr, size_t size) 81 { 82 if ((ptr = realloc(ptr, size)) == NULL) 83 enomem(); 84 return ptr; 85 } 86 #endif 87 88 /* Allocate a string from start up to but excluding end. */ 89 char * bmake_strsedup(const char * start,const char * end)90 bmake_strsedup(const char *start, const char *end) 91 { 92 return bmake_strldup(start, (size_t)(end - start)); 93 } 94