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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  */
     41 static void
     42 enomem(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  */
     52 void *
     53 bmake_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  */
     66 char *
     67 bmake_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  */
     82 char *
     83 bmake_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  */
    105 void *
    106 bmake_realloc(void *ptr, size_t size)
    107 {
    108 	if ((ptr = realloc(ptr, size)) == NULL)
    109 		enomem();
    110 	return(ptr);
    111 }
    112 #endif
    113