usr/src/cmd/backup/lib/memutils.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 1998 by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <stdlib.h>
  30 #include <errno.h>
  31 #include <libintl.h>
  32 #include <string.h>
  33 #include "memutils.h"
  34
  35 extern void msg(const char *, ...);
  36 extern void dumpabort(void);
  37
  38 void *
  39 xmalloc(bytes)
  40         size_t bytes;
  41 {
  42         void *cp;
  43
  44         cp = malloc(bytes);
  45         if (cp == NULL) {
  46                 int saverr = errno;
  47                 msg(gettext("Cannot allocate memory: %s\n"), strerror(saverr));
  48                 dumpabort();
  49         }
  50         return (cp);
  51 }
  52
  53 void *
  54 xcalloc(nelem, size)
  55         size_t nelem;
  56         size_t size;
  57 {
  58         void *cp;
  59
  60         cp = calloc(nelem, size);
  61         if (cp == NULL) {
  62                 int saverr = errno;
  63                 msg(gettext("Cannot allocate memory: %s\n"), strerror(saverr));
  64                 dumpabort();
  65         }
  66         return (cp);
  67 }
  68
  69 void *
  70 xrealloc(allocated, newsize)
  71         void *allocated;
  72         size_t newsize;
  73 {
  74         void *cp;
  75
  76         /* LINTED realloc knows what to do with a NULL pointer */
  77         cp = realloc(allocated, newsize);
  78         if (cp == NULL) {
  79                 int saverr = errno;
  80                 msg(gettext("Cannot allocate memory: %s\n"), strerror(saverr));
  81                 dumpabort();
  82         }
  83         return (cp);
  84 }