sbin/rcorder/ealloc.c

   1 /*
   2  * Copyright (c) 1988, 1989, 1990, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  * Copyright (c) 1989 by Berkeley Softworks
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Adam de Boor.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  *
  38  * $NetBSD: ealloc.c,v 1.1.1.1 1999/11/19 04:30:56 mrg Exp $
  39  * $DragonFly: src/sbin/rcorder/ealloc.c,v 1.3 2003/11/01 17:16:01 drhodus Exp $
  40  */
  41
  42 #include <sys/cdefs.h>
  43 #ifndef lint
  44 __RCSID("$NetBSD: ealloc.c,v 1.1.1.1 1999/11/19 04:30:56 mrg Exp $");
  45 #endif /* not lint */
  46
  47 #include <stdio.h>
  48 #include <stdlib.h>
  49 #include <string.h>
  50 #include <err.h>
  51
  52 #include "ealloc.h"
  53
  54 static void enomem(void);
  55
  56 /*
  57  * enomem --
  58  *      die when out of memory.
  59  */
  60 static void
  61 enomem(void)
  62 {
  63         errx(2, "Cannot allocate memory.");
  64 }
  65
  66 /*
  67  * emalloc --
  68  *      malloc, but die on error.
  69  */
  70 void *
  71 emalloc(size_t len)
  72 {
  73         void *p;
  74
  75         if ((p = malloc(len)) == NULL)
  76                 enomem();
  77         return(p);
  78 }
  79
  80 /*
  81  * estrdup --
  82  *      strdup, but die on error.
  83  */
  84 char *
  85 estrdup(const char *str)
  86 {
  87         char *p;
  88
  89         if ((p = strdup(str)) == NULL)
  90                 enomem();
  91         return(p);
  92 }
  93
  94 /*
  95  * erealloc --
  96  *      realloc, but die on error.
  97  */
  98 void *
  99 erealloc(void *ptr, size_t size)
 100 {
 101         if ((ptr = realloc(ptr, size)) == NULL)
 102                 enomem();
 103         return(ptr);
 104 }
 105
 106 /*
 107  * ecalloc --
 108  *      calloc, but die on error.
 109  */
 110 void *
 111 ecalloc(size_t nmemb, size_t size)
 112 {
 113         void    *ptr;
 114
 115         if ((ptr = calloc(nmemb, size)) == NULL)
 116                 enomem();
 117         return(ptr);
 118 }