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/*
File: gfs2.c
Copyright (C) 2011 Christophe GRENIER <grenier@cgsecurity.org>
This software is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write the Free Software Foundation, Inc., 51
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include "types.h"
#include "common.h"
#include "gfs2.h"
#include "fnctdsk.h"
#include "log.h"
static void set_gfs2_info(partition_t *partition)
{
partition->upart_type=UP_GFS2;
partition->info[0]='\0';
}
static int test_gfs2(const disk_t *disk, const struct gfs2_sb *sb, const partition_t *partition, const int dump_ind)
{
if(sb->sb_header.mh_magic != be32(GFS2_MAGIC))
return 1;
if(sb->sb_header.mh_format != be32(GFS2_FORMAT_SB))
return 1;
if(partition==NULL)
return 0;
if(dump_ind!=0)
{
log_info("\ngfs2 magic value at %u/%u/%u\n",
offset2cylinder(disk, partition->part_offset),
offset2head(disk, partition->part_offset),
offset2sector(disk, partition->part_offset));
dump_log(sb,DEFAULT_SECTOR_SIZE);
}
return 0;
}
int check_gfs2(disk_t *disk, partition_t *partition)
{
unsigned char *buffer;
buffer=(unsigned char*)MALLOC(512);
if(disk->pread(disk, buffer, 512, partition->part_offset + (GFS2_SB_ADDR << GFS2_BASIC_BLOCK_SHIFT)) != 512)
{
free(buffer);
return 1;
}
if(test_gfs2(disk, (const struct gfs2_sb *)buffer, partition,0)!=0)
{
free(buffer);
return 1;
}
set_gfs2_info(partition);
free(buffer);
return 0;
}
int recover_gfs2(const disk_t *disk, const struct gfs2_sb *sb, partition_t *partition, const int dump_ind)
{
if(test_gfs2(disk,sb,partition,dump_ind)!=0)
return 1;
set_gfs2_info(partition);
partition->part_size=disk->sector_size;
partition->part_type_i386=(unsigned char)P_LINUX;
return 0;
}
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