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make_malloc.c revision 1.13 
      1 /*	$NetBSD: make_malloc.c,v 1.13 2020/08/12 03:27:29 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 #ifdef MAKE_NATIVE
     30 #include <sys/cdefs.h>
     31 __RCSID("$NetBSD: make_malloc.c,v 1.13 2020/08/12 03:27:29 rillig Exp $");
     32 #endif
     33 
     34 #include <stdio.h>
     35 #include <stdlib.h>
     36 #include <string.h>
     37 #include <errno.h>
     38 
     39 #include "make.h"
     40 
     41 #ifndef USE_EMALLOC
     42 static MAKE_ATTR_DEAD void enomem(void);
     43 
     44 /*
     45  * enomem --
     46  *	die when out of memory.
     47  */
     48 static MAKE_ATTR_DEAD void
     49 enomem(void)
     50 {
     51 	(void)fprintf(stderr, "%s: %s.\n", progname, strerror(ENOMEM));
     52 	exit(2);
     53 }
     54 
     55 /*
     56  * bmake_malloc --
     57  *	malloc, but die on error.
     58  */
     59 void *
     60 bmake_malloc(size_t len)
     61 {
     62 	void *p;
     63 
     64 	if ((p = malloc(len)) == NULL)
     65 		enomem();
     66 	return p;
     67 }
     68 
     69 /*
     70  * bmake_strdup --
     71  *	strdup, but die on error.
     72  */
     73 char *
     74 bmake_strdup(const char *str)
     75 {
     76 	size_t len;
     77 	char *p;
     78 
     79 	len = strlen(str) + 1;
     80 	if ((p = malloc(len)) == NULL)
     81 		enomem();
     82 	return memcpy(p, str, len);
     83 }
     84 
     85 /*
     86  * bmake_strndup --
     87  *	strndup, but die on error.
     88  */
     89 char *
     90 bmake_strndup(const char *str, size_t max_len)
     91 {
     92 	size_t len;
     93 	char *p;
     94 
     95 	if (str == NULL)
     96 		return NULL;
     97 
     98 	for (len = 0; len < max_len; len++)
     99 	    if (str[len] == '\0')
    100 		break;
    101 	p = bmake_malloc(len + 1);
    102 	memcpy(p, str, len);
    103 	p[len] = '\0';
    104 
    105 	return p;
    106 }
    107 
    108 /*
    109  * bmake_realloc --
    110  *	realloc, but die on error.
    111  */
    112 void *
    113 bmake_realloc(void *ptr, size_t size)
    114 {
    115 	if ((ptr = realloc(ptr, size)) == NULL)
    116 		enomem();
    117 	return ptr;
    118 }
    119 #endif
    120