make_malloc.c revision 1.1 
1/*	$NetBSD: make_malloc.c,v 1.1 2009/01/24 11:59:39 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 1.1 2009/01/24 11:59:39 dsl Exp $");
31
32#include <sys/types.h>
33#include <stdio.h>
34#include <stdlib.h>
35
36#ifndef USE_EMALLOC
37/*
38 * enomem --
39 *	die when out of memory.
40 */
41static void
42enomem(void)
43{
44	(void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno));
45	exit(2);
46}
47
48/*
49 * bmake_malloc --
50 *	malloc, but die on error.
51 */
52void *
53bmake_malloc(size_t len)
54{
55	void *p;
56
57	if ((p = malloc(len)) == NULL)
58		enomem();
59	return(p);
60}
61
62/*
63 * bmake_strdup --
64 *	strdup, but die on error.
65 */
66char *
67bmake_strdup(const char *str)
68{
69	size_t len;
70	char *p;
71
72	len = strlen(str) + 1;
73	if ((p = malloc(len)) == NULL)
74		enomem();
75	return memcpy(p, str, len);
76}
77
78/*
79 * bmake_strndup --
80 *	strndup, but die on error.
81 */
82char *
83bmake_strndup(const char *str, size_t max_len)
84{
85	size_t len;
86	char *p;
87
88	if (str == NULL)
89		return NULL;
90
91	len = strlen(str);
92	if (len > max_len)
93		len = max_len;
94	p = bmake_malloc(len + 1);
95	memcpy(p, str, len);
96	p[len] = '\0';
97
98	return(p);
99}
100
101/*
102 * bmake_realloc --
103 *	realloc, but die on error.
104 */
105void *
106bmake_realloc(void *ptr, size_t size)
107{
108	if ((ptr = realloc(ptr, size)) == NULL)
109		enomem();
110	return(ptr);
111}
112#endif
113