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make_malloc.c revision 1.2 
      1 /*	$NetBSD: make_malloc.c,v 1.2 2009/01/24 13:06:16 cegger 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 1.2 2009/01/24 13:06:16 cegger Exp $");
     31 
     32 #include <sys/types.h>
     33 #include <stdio.h>
     34 #include <stdlib.h>
     35 #include <string.h>
     36 #include <errno.h>
     37 
     38 #ifndef USE_EMALLOC
     39 /*
     40  * enomem --
     41  *	die when out of memory.
     42  */
     43 static void
     44 enomem(void)
     45 {
     46 	(void)fprintf(stderr, "%s.\n", strerror(errno));
     47 	exit(2);
     48 }
     49 
     50 /*
     51  * bmake_malloc --
     52  *	malloc, but die on error.
     53  */
     54 void *
     55 bmake_malloc(size_t len)
     56 {
     57 	void *p;
     58 
     59 	if ((p = malloc(len)) == NULL)
     60 		enomem();
     61 	return(p);
     62 }
     63 
     64 /*
     65  * bmake_strdup --
     66  *	strdup, but die on error.
     67  */
     68 char *
     69 bmake_strdup(const char *str)
     70 {
     71 	size_t len;
     72 	char *p;
     73 
     74 	len = strlen(str) + 1;
     75 	if ((p = malloc(len)) == NULL)
     76 		enomem();
     77 	return memcpy(p, str, len);
     78 }
     79 
     80 /*
     81  * bmake_strndup --
     82  *	strndup, but die on error.
     83  */
     84 char *
     85 bmake_strndup(const char *str, size_t max_len)
     86 {
     87 	size_t len;
     88 	char *p;
     89 
     90 	if (str == NULL)
     91 		return NULL;
     92 
     93 	len = strlen(str);
     94 	if (len > max_len)
     95 		len = max_len;
     96 	p = bmake_malloc(len + 1);
     97 	memcpy(p, str, len);
     98 	p[len] = '\0';
     99 
    100 	return(p);
    101 }
    102 
    103 /*
    104  * bmake_realloc --
    105  *	realloc, but die on error.
    106  */
    107 void *
    108 bmake_realloc(void *ptr, size_t size)
    109 {
    110 	if ((ptr = realloc(ptr, size)) == NULL)
    111 		enomem();
    112 	return(ptr);
    113 }
    114 #endif
    115