lib/xfuncs.c

   1 /*
   2  * xfuncs.c - safe malloc funcions
   3  *
   4  * based on busybox
   5  *
   6  * Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
   7  *
   8  * See file CREDITS for list of people who contributed to this
   9  * project.
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2
  13  * as published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 #include <common.h>
  26 #include <malloc.h>
  27 #include <module.h>
  28
  29 void *xmalloc(size_t size)
  30 {
  31         void *p = NULL;
  32
  33         if (!(p = malloc(size)))
  34                 panic("ERROR: out of memory\n");
  35
  36         debug("xmalloc %p (size %d)\n", p, size);
  37
  38         return p;
  39 }
  40 EXPORT_SYMBOL(xmalloc);
  41
  42 void *xrealloc(void *ptr, size_t size)
  43 {
  44         void *p = NULL;
  45
  46         if (!(p = realloc(ptr, size)))
  47                 panic("ERROR: out of memory\n");
  48
  49         debug("xrealloc %p -> %p (size %d)\n", ptr, p, size);
  50
  51         return p;
  52 }
  53 EXPORT_SYMBOL(xrealloc);
  54
  55 void *xzalloc(size_t size)
  56 {
  57         void *ptr = xmalloc(size);
  58         memset(ptr, 0, size);
  59         return ptr;
  60 }
  61 EXPORT_SYMBOL(xzalloc);
  62
  63 char *xstrdup(const char *s)
  64 {
  65         char *p = strdup(s);
  66
  67         if (!p)
  68                 panic("ERROR: out of memory\n");
  69         return p;
  70 }
  71 EXPORT_SYMBOL(xstrdup);
  72