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/*
File: rfs.h
Copyright (C) 2005-2006 Christophe GRENIER <grenier@cgsecurity.org>
Taken from ReiserFS v0.91. Reiserfs Copyright 1996, 1997, 1998 Hans Reiser
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.
*/
#ifndef _RFS_H
#define _RFS_H
#ifdef __cplusplus
extern "C" {
#endif
#define REISERFS_SUPER_MAGIC "ReIsErFs"
#define REISERFS2_SUPER_MAGIC "ReIsEr2Fs"
#define REISERFS3_SUPER_MAGIC "ReIsEr3Fs"
#define REISERFS_FIRST_BLOCK 8
#define REISERFS_VALID_FS 1
#define REISERFS_ERROR_FS 2
#define REISERFS_MIN_BLOCK_AMOUNT 100
/* 8*512 for offset + 512 for format40_super */
#define REISERFS_SUPER_BLOCK_SIZE 9*512
struct reiserfs_super_block
{
uint32_t s_block_count; /* 0x00 blocks count */
uint32_t s_free_blocks; /* 0x04 free blocks count */
uint32_t s_root_block; /* 0x08 root block number */
uint32_t s_journal_block; /* 0x0C journal block number */
uint32_t s_journal_dev; /* 0x10 journal device number */
uint32_t s_orig_journal_size; /* 0x14 size of the journal on FS creation. */
uint32_t s_journal_trans_max; /* 0x18 max number of blocks in a transaction. */
uint32_t s_journal_block_count; /* 0x1C total size of the journal. can change over time */
uint32_t s_journal_max_batch; /* 0x20 max number of blocks to batch into a trans */
uint32_t s_journal_max_commit_age; /* 0x24 in seconds, how old can an async commit be */
uint32_t s_journal_max_trans_age; /* 0x28 in seconds, how old can a transaction be */
uint16_t s_blocksize; /* 0x2C block size */
uint16_t s_oid_maxsize; /* 0x2E max size of object id array, see get_objectid() commentary */
uint16_t s_oid_cursize; /* 0x30 current size of object id array */
uint16_t s_state; /* 0x32 valid or error */
char s_magic[10]; /* 0x34 reiserfs magic string indicates that file system is reiserfs */
uint16_t sb_fs_state; /* 0x3E it is set to used by fsck to mark which phase of
rebuilding is done (used for fsck debugging) */
uint32_t s_hash_function_code; /* 0x40 indicate, what hash fuction is being use to sort names in a directory*/
uint16_t s_tree_height; /* 0x44 height of disk tree */
uint16_t s_bmap_nr; /* 0x46 amount of bitmap blocks needed to address each block of file system */
uint16_t sb_version; /* 72 this field is only reliable on
filesystem with non-standard journal */
uint16_t sb_reserved_for_journal; /* 74 size in blocks of journal area on
main device, we need to keep after
non-standard journal relocation */
/* 76 */ uint32_t sb_inode_generation;
/* 80 */ uint32_t s_flags; /* Right now used only by inode-attributes, if enabled */
/* 84 */ unsigned char s_uuid[16]; /* filesystem unique identifier */
/*100 */ unsigned char s_label[16]; /* filesystem volume label */
/*116 */ char s_unused[88] ; /* zero filled by mkreiserfs and reiserfs_convert_objectid_map_v1()
* so any additions must be updated there as well. */
/*204*/
} __attribute__ ((gcc_struct, __packed__));
#define SB_SIZE (sizeof(struct reiserfs_super_block))
#define REISERFS4_SUPER_MAGIC "ReIsEr4"
#define MAGIC_SIZE 16
struct reiser4_master_sb {
char magic[16]; /* "ReIsEr4" */
uint16_t disk_plugin_id; /* id of disk layout plugin */
uint16_t blocksize;
char uuid[16]; /* unique id */
char label[16]; /* filesystem label */
uint64_t diskmap; /* location of the diskmap. 0 if not present */
} __attribute__ ((gcc_struct, __packed__));
struct format40_super {
uint64_t sb_block_count;
uint64_t sb_free_blocks;
uint64_t sb_root_block;
/* These 2 fields are for oid data. */
uint64_t sb_oid[2];
uint64_t sb_flushes;
uint32_t sb_mkfs_id;
char sb_magic[MAGIC_SIZE];
uint16_t sb_tree_height;
uint16_t sb_policy;
uint64_t sb_flags;
char sb_unused[432];
} __attribute__((packed));
/*@
@ requires \valid(disk_car);
@ requires \valid(partition);
@ requires separation: \separated(disk_car, partition);
@ decreases 0;
@*/
int check_rfs(disk_t *disk_car, partition_t *partition, const int verbose);
/*@
@ requires \valid_read(disk_car);
@ requires \valid_read(sb);
@ requires \valid(partition);
@ requires separation: \separated(disk_car, sb, partition);
@*/
int recover_rfs(const disk_t *disk_car, const struct reiserfs_super_block *sb, partition_t *partition, const int verbose, const int dump_ind);
#ifdef __cplusplus
} /* closing brace for extern "C" */
#endif
#endif
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