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/*
File: xfs.c
Copyright (C) 2004-2007 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
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#include "types.h"
#include "common.h"
#include "xfs.h"
#include "fnctdsk.h"
#include "log.h"
#include "guid_cpy.h"
static void set_xfs_info(const struct xfs_sb *sb, partition_t *partition)
{
const unsigned int version=be16(sb->sb_versionnum) & XFS_SB_VERSION_NUMBITS;
partition->blocksize=be32(sb->sb_blocksize);
partition->fsname[0]='\0';
partition->info[0]='\0';
switch(version)
{
case XFS_SB_VERSION_1:
partition->upart_type = UP_XFS;
snprintf(partition->info, sizeof(partition->info),
"XFS <=6.1, blocksize=%u", partition->blocksize);
break;
case XFS_SB_VERSION_2:
partition->upart_type = UP_XFS2;
snprintf(partition->info, sizeof(partition->info),
"XFS 6.2 - attributes, blocksize=%u", partition->blocksize);
break;
case XFS_SB_VERSION_3:
partition->upart_type = UP_XFS3;
snprintf(partition->info, sizeof(partition->info),
"XFS 6.2 - new inode version, blocksize=%u", partition->blocksize);
break;
case XFS_SB_VERSION_4:
partition->upart_type = UP_XFS4;
snprintf(partition->info, sizeof(partition->info),
"XFS 6.2+ - bitmap version, blocksize=%u", partition->blocksize);
break;
case XFS_SB_VERSION_5:
partition->upart_type = UP_XFS5;
snprintf(partition->info, sizeof(partition->info),
"XFS CRC enabled, blocksize=%u", partition->blocksize);
break;
default:
snprintf(partition->info, sizeof(partition->info),
"XFS unknown version %u\n", version);
break;
}
set_part_name(partition,sb->sb_fname,12);
}
static int test_xfs(const disk_t *disk_car, const struct xfs_sb *sb, const partition_t *partition, const int verbose)
{
if(sb->sb_magicnum!=be32(XFS_SB_MAGIC) ||
(uint16_t)be16(sb->sb_sectsize) != (1U << sb->sb_sectlog) ||
(uint32_t)be32(sb->sb_blocksize) != (1U << sb->sb_blocklog) ||
(uint16_t)be16(sb->sb_inodesize) != (1U << sb->sb_inodelog))
return 1;
switch(be16(sb->sb_versionnum) & XFS_SB_VERSION_NUMBITS)
{
case XFS_SB_VERSION_1:
case XFS_SB_VERSION_2:
case XFS_SB_VERSION_3:
case XFS_SB_VERSION_4:
case XFS_SB_VERSION_5:
break;
default:
log_error("Unknown XFS version 0x%x\n",be16(sb->sb_versionnum)& XFS_SB_VERSION_NUMBITS);
break;
}
if(verbose>0)
log_info("\nXFS Marker at %u/%u/%u\n", offset2cylinder(disk_car,partition->part_offset),offset2head(disk_car,partition->part_offset),offset2sector(disk_car,partition->part_offset));
return 0;
}
int check_xfs(disk_t *disk_car,partition_t *partition,const int verbose)
{
unsigned char *buffer=(unsigned char*)MALLOC(XFS_SUPERBLOCK_SIZE);
if(disk_car->pread(disk_car, buffer, XFS_SUPERBLOCK_SIZE, partition->part_offset) != XFS_SUPERBLOCK_SIZE)
{
free(buffer);
return 1;
}
if(test_xfs(disk_car, (struct xfs_sb*)buffer, partition, verbose)!=0)
{
free(buffer);
return 1;
}
set_xfs_info((struct xfs_sb*)buffer, partition);
free(buffer);
return 0;
}
int recover_xfs(const disk_t *disk_car, const struct xfs_sb *sb, partition_t *partition, const int verbose, const int dump_ind)
{
if(test_xfs(disk_car, sb, partition, verbose)!=0)
return 1;
if(verbose>0 || dump_ind!=0)
{
log_info("\nrecover_xfs\n");
if(dump_ind!=0)
{
dump_log(sb,DEFAULT_SECTOR_SIZE);
}
}
set_xfs_info(sb, partition);
partition->part_size = (uint64_t)be64(sb->sb_dblocks) * be32(sb->sb_blocksize);
partition->part_type_i386=P_LINUX;
partition->part_type_mac=PMAC_LINUX;
partition->part_type_sun=PSUN_LINUX;
partition->part_type_gpt=GPT_ENT_TYPE_LINUX_DATA;
guid_cpy(&partition->part_uuid, (const efi_guid_t *)&sb->sb_uuid);
return 0;
}
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