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https://git.proxmox.com/git/grub2
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c0a2098a2d
The grub_free() implementation in kern/mm.c safely handles NULL pointers, and code at many places depends on this. We don't know that the same is true on all host OSes, so we need to handle the same behavior in grub-emu's implementation. Signed-off-by: Peter Jones <pjones@redhat.com> Reviewed-by: Darren Kenny <darren.kenny@oracle.com> Patch-Name: emu-free-null.patch
76 lines
1.6 KiB
C
76 lines
1.6 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2002,2003,2005,2006,2007,2008,2009,2010 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config-util.h>
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#include <grub/types.h>
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#include <grub/err.h>
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#include <grub/mm.h>
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#include <stdlib.h>
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#include <string.h>
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#include <grub/i18n.h>
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void *
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grub_calloc (grub_size_t nmemb, grub_size_t size)
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{
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void *ret;
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ret = calloc (nmemb, size);
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if (!ret)
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grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
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return ret;
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}
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void *
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grub_malloc (grub_size_t size)
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{
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void *ret;
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ret = malloc (size);
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if (!ret)
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grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
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return ret;
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}
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void *
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grub_zalloc (grub_size_t size)
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{
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void *ret;
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ret = grub_malloc (size);
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if (!ret)
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return NULL;
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memset (ret, 0, size);
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return ret;
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}
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void
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grub_free (void *ptr)
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{
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if (ptr)
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free (ptr);
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}
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void *
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grub_realloc (void *ptr, grub_size_t size)
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{
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void *ret;
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ret = realloc (ptr, size);
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if (!ret)
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grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
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return ret;
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}
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