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make_malloc.c revision 1.3 
      1 /*	$NetBSD: make_malloc.c,v 1.3 2009/01/24 14:43:28 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 1.3 2009/01/24 14:43:28 dsl Exp $");
     31 
     32 #include <stdio.h>
     33 #include <stdlib.h>
     34 #include <string.h>
     35 #include <errno.h>
     36 
     37 #include "make_malloc.h"
     38 
     39 #ifndef USE_EMALLOC
     40 /*
     41  * enomem --
     42  *	die when out of memory.
     43  */
     44 static void
     45 enomem(void)
     46 {
     47 	extern char *progname;
     48 
     49 	(void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno));
     50 	exit(2);
     51 }
     52 
     53 /*
     54  * bmake_malloc --
     55  *	malloc, but die on error.
     56  */
     57 void *
     58 bmake_malloc(size_t len)
     59 {
     60 	void *p;
     61 
     62 	if ((p = malloc(len)) == NULL)
     63 		enomem();
     64 	return(p);
     65 }
     66 
     67 /*
     68  * bmake_strdup --
     69  *	strdup, but die on error.
     70  */
     71 char *
     72 bmake_strdup(const char *str)
     73 {
     74 	size_t len;
     75 	char *p;
     76 
     77 	len = strlen(str) + 1;
     78 	if ((p = malloc(len)) == NULL)
     79 		enomem();
     80 	return memcpy(p, str, len);
     81 }
     82 
     83 /*
     84  * bmake_strndup --
     85  *	strndup, but die on error.
     86  */
     87 char *
     88 bmake_strndup(const char *str, size_t max_len)
     89 {
     90 	size_t len;
     91 	char *p;
     92 
     93 	if (str == NULL)
     94 		return NULL;
     95 
     96 	len = strlen(str);
     97 	if (len > max_len)
     98 		len = max_len;
     99 	p = bmake_malloc(len + 1);
    100 	memcpy(p, str, len);
    101 	p[len] = '\0';
    102 
    103 	return(p);
    104 }
    105 
    106 /*
    107  * bmake_realloc --
    108  *	realloc, but die on error.
    109  */
    110 void *
    111 bmake_realloc(void *ptr, size_t size)
    112 {
    113 	if ((ptr = realloc(ptr, size)) == NULL)
    114 		enomem();
    115 	return(ptr);
    116 }
    117 #endif
    118