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