mirror of
https://github.com/reactos/reactos.git
synced 2024-12-28 18:15:11 +00:00
76 lines
3.6 KiB
C
76 lines
3.6 KiB
C
/*
|
|
* COPYRIGHT: See COPYING in the top level directory
|
|
* PROJECT: ReactOS File System Recognizer
|
|
* FILE: drivers/filesystems/fs_rec/btrfs.h
|
|
* PURPOSE: BTRFS Header File
|
|
* PROGRAMMER: Peter Hater
|
|
* Pierre Schweitzer (pierre@reactos.org)
|
|
*/
|
|
|
|
#include <pshpack1.h>
|
|
struct journal_params {
|
|
// Block number of the block containing the first journal node.
|
|
UINT32 jp_journal_1st_block; /* where does journal start from on its device */
|
|
|
|
// Journal device number (?? for if the journal is on a separate drive ??)
|
|
UINT32 jp_journal_dev; /* journal device st_rdev */
|
|
|
|
// Original journal size. (Needed when using partition on systems w/ different default journal sizes).
|
|
UINT32 jp_journal_size; /* size of the journal */
|
|
|
|
UINT32 jp_journal_trans_max; /* max number of blocks in a transaction. */
|
|
UINT32 jp_journal_magic; /* random value made on fs creation (this was sb_journal_block_count) */
|
|
UINT32 jp_journal_max_batch; /* max number of blocks to batch into a trans */
|
|
UINT32 jp_journal_max_commit_age; /* in seconds, how old can an async commit be */
|
|
UINT32 jp_journal_max_trans_age; /* in seconds, how old can a transaction be */
|
|
};
|
|
|
|
typedef struct _RFSD_SUPER_BLOCK
|
|
{
|
|
// The number of blocks in the partition
|
|
UINT32 s_blocks_count; /* blocks count */ //[mark] was _s_blocks_count
|
|
|
|
// The number of free blocks in the partition
|
|
UINT32 s_free_blocks_count; /* free blocks count */ //[mark] was _s_free_blocks
|
|
|
|
// Block number of the block containing the root node
|
|
UINT32 s_root_block; /* root block number */
|
|
|
|
struct journal_params s_journal;
|
|
|
|
// The size (in bytes) of a block
|
|
UINT16 s_blocksize; /* block size */
|
|
|
|
UINT16 s_oid_maxsize; /* max size of object id array, see get_objectid() commentary */
|
|
UINT16 s_oid_cursize; /* current size of object id array */
|
|
UINT16 s_umount_state; /* this is set to 1 when filesystem was umounted, to 2 - when not */
|
|
char s_magic[10]; /* reiserfs magic string indicates that
|
|
* file system is reiserfs:
|
|
* "ReIsErFs" or "ReIsEr2Fs" or "ReIsEr3Fs" */
|
|
|
|
// State of the partition: valid(1), error (2)
|
|
UINT16 s_fs_state; /* it is set to used by fsck to mark which phase of rebuilding is done */
|
|
|
|
UINT32 s_hash_function_code; /* indicate, what hash function is being use
|
|
* to sort names in a directory*/
|
|
UINT16 s_tree_height; /* height of disk tree */
|
|
UINT16 s_bmap_nr; /* amount of bitmap blocks needed to address
|
|
* each block of file system */
|
|
|
|
// The reiserfs version number
|
|
UINT16 s_version; /* this field is only reliable on filesystem
|
|
* with non-standard journal */
|
|
UINT16 s_reserved_for_journal; /* size in blocks of journal area on main
|
|
* device, we need to keep after
|
|
* making fs with non-standard journal */
|
|
} RFSD_SUPER_BLOCK, *PRFSD_SUPER_BLOCK;
|
|
#include <poppack.h>
|
|
|
|
C_ASSERT(FIELD_OFFSET(RFSD_SUPER_BLOCK, s_blocksize) == 44);
|
|
C_ASSERT(FIELD_OFFSET(RFSD_SUPER_BLOCK, s_magic) == 52);
|
|
|
|
#define REISERFS_DISK_OFFSET_IN_BYTES (64 * 1024)
|
|
#define REISERFS_SUPER_MAGIC_STRING "ReIsErFs"
|
|
#define REISER2FS_SUPER_MAGIC_STRING "ReIsEr2Fs"
|
|
#define REISER2FS_JR_SUPER_MAGIC_STRING "ReIsEr3Fs"
|
|
#define MAGIC_KEY_LENGTH 9
|