WebSVN – Kolibri OS – Blame – /kernel/trunk/fs/xfs.inc

Rev	Author	Line No.	Line
4850	mario79	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
10051	ace_dent	3	;; Copyright (C) KolibriOS team 2013-2024. All rights reserved. ;;
7736	dunkaist	4	;; Distributed under terms of the GNU General Public License ;;
4850	mario79	5	;; ;;
		6	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		7
		8
7736	dunkaist	9	; file types from stat.h
		10	S_IFMT = 0170000o ; These bits determine file type
		11	S_IFDIR = 0040000o ; Directory
		12	S_IFCHR = 0020000o ; Character device
		13	S_IFBLK = 0060000o ; Block device
		14	S_IFREG = 0100000o ; Regular file
		15	S_IFIFO = 0010000o ; FIFO
		16	S_IFLNK = 0120000o ; Symbolic link
		17	S_IFSOCK = 0140000o ; Socket
4850	mario79	18
3913	dunkaist	19	; XFS null constant: empty fields must be all ones, not zeros!
		20	XFS_NULL = -1
		21
		22	XFS_SECT_SB = 0
		23
		24	; signatures of file system structures
		25	XFS_AGF_MAGIC = 'XAGF'
		26	XFS_DINODE_MAGIC = 'IN'
		27	XFS_BMAP_MAGIC = 'BMAP'
7736	dunkaist	28	XFS_DA_NODE_MAGIC = 0xbefe
		29	XFS_DIR2_LEAF1_MAGIC = 0xf1d2
		30	XFS_DIR2_LEAFN_MAGIC = 0xffd2
3913	dunkaist	31	XFS_DIR2_BLOCK_MAGIC = 'XD2B'
		32	XFS_DIR2_DATA_MAGIC = 'XD2D'
		33
7736	dunkaist	34	XFS_BMAP3_MAGIC = 'BMA3'
		35	XFS_DA3_NODE_MAGIC = 0xbe3e ; non-leaf blocks
		36	XFS_DIR3_LEAF1_MAGIC = 0xf13d ; v3 dir single blks
		37	XFS_DIR3_LEAFN_MAGIC = 0xff3d ; v3 dir multi blks
		38	XFS_DIR3_BLOCK_MAGIC = 'XDB3' ; single block dirs
		39	XFS_DIR3_DATA_MAGIC = 'XDD3' ; multiblock dirs
3913	dunkaist	40
7736	dunkaist	41	XFS_SB_MAGIC = 'XFSB'
		42	XFS_SB_VERSION_NUMBITS = 0x000f
		43	XFS_SB_VERSION_ALLFBITS = 0xfff0
		44	XFS_SB_VERSION_REALFBITS = 0x0ff0
		45	XFS_SB_VERSION_ATTRBIT = 0x0010
		46	XFS_SB_VERSION_NLINKBIT = 0x0020
		47	XFS_SB_VERSION_QUOTABIT = 0x0040
		48	XFS_SB_VERSION_ALIGNBIT = 0x0080
		49	XFS_SB_VERSION_DALIGNBIT = 0x0100
		50	XFS_SB_VERSION_SHAREDBIT = 0x0200
		51	XFS_SB_VERSION_LOGV2BIT = 0x0400
		52	XFS_SB_VERSION_SECTORBIT = 0x0800
		53	XFS_SB_VERSION_EXTFLGBIT = 0x1000
		54	XFS_SB_VERSION_DIRV2BIT = 0x2000
		55	XFS_SB_VERSION_BORGBIT = 0x4000 ; ASCII only case-insensitive
		56	XFS_SB_VERSION_MOREBITSBIT = 0x8000
		57
		58	XFS_SB_VERSION_SUPPORTED = XFS_SB_VERSION_NUMBITS OR \
		59	XFS_SB_VERSION_ATTRBIT OR \
		60	XFS_SB_VERSION_NLINKBIT OR \
		61	XFS_SB_VERSION_QUOTABIT OR \
		62	XFS_SB_VERSION_ALIGNBIT OR \
		63	XFS_SB_VERSION_LOGV2BIT OR \
		64	XFS_SB_VERSION_SECTORBIT OR \
		65	XFS_SB_VERSION_EXTFLGBIT OR \
		66	XFS_SB_VERSION_DIRV2BIT OR \
		67	XFS_SB_VERSION_MOREBITSBIT
		68
		69	XFS_SB_VERSION2_RESERVED1BIT = 0x00000001
		70	XFS_SB_VERSION2_LAZYSBCOUNTBIT = 0x00000002 ; Superblk counters
		71	XFS_SB_VERSION2_RESERVED4BIT = 0x00000004
		72	XFS_SB_VERSION2_ATTR2BIT = 0x00000008 ; Inline attr rework
		73	XFS_SB_VERSION2_PARENTBIT = 0x00000010 ; parent pointers in xattr
		74	XFS_SB_VERSION2_PROJID32BIT = 0x00000080 ; 32 bit project id
		75	XFS_SB_VERSION2_CRCBIT = 0x00000100 ; metadata CRCs
		76	XFS_SB_VERSION2_FTYPE = 0x00000200 ; inode type in dir
		77
		78	XFS_SB_VERSION2_SUPPORTED = XFS_SB_VERSION2_LAZYSBCOUNTBIT OR \
		79	XFS_SB_VERSION2_ATTR2BIT OR \
		80	XFS_SB_VERSION2_PARENTBIT OR \
		81	XFS_SB_VERSION2_PROJID32BIT OR \
		82	XFS_SB_VERSION2_CRCBIT OR \
		83	XFS_SB_VERSION2_FTYPE
		84
9889	dunkaist	85	XFS_SB_FEAT_INCOMPAT_FTYPE = 0x01 ; filetype in dirent
		86	XFS_SB_FEAT_INCOMPAT_SPINODES = 0x02 ; sparse inode chunks
		87	XFS_SB_FEAT_INCOMPAT_META_UUID = 0x04 ; metadata UUID
		88	XFS_SB_FEAT_INCOMPAT_BIGTIME = 0x08 ; large timestamps
		89	XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR = 0x10 ; e.g. for upgrade to nrext64
		90	XFS_SB_FEAT_INCOMPAT_NREXT64 = 0x20 ; 64bit extent counters
		91	XFS_SB_FEAT_INCOMPAT_SUPPORTED = XFS_SB_FEAT_INCOMPAT_FTYPE OR \
		92	XFS_SB_FEAT_INCOMPAT_SPINODES OR \
		93	XFS_SB_FEAT_INCOMPAT_META_UUID OR \
		94	XFS_SB_FEAT_INCOMPAT_BIGTIME OR \
		95	XFS_SB_FEAT_INCOMPAT_NREXT64
7736	dunkaist	96
3913	dunkaist	97	; bitfield lengths for packed extent
		98	; MSB to LSB / left to right
		99	BMBT_EXNTFLAG_BITLEN = 1
		100	BMBT_STARTOFF_BITLEN = 54
		101	BMBT_STARTBLOCK_BITLEN = 52
		102	BMBT_BLOCKCOUNT_BITLEN = 21
		103
7736	dunkaist	104	XFS_DIR2_DATA_ALIGN_LOG = 3
		105	XFS_DIR2_DATA_ALIGN = 1 SHL XFS_DIR2_DATA_ALIGN_LOG
3913	dunkaist	106	XFS_DIR2_SPACE_SIZE = (1 SHL (32 + XFS_DIR2_DATA_ALIGN_LOG))
7736	dunkaist	107	XFS_DIR2_DATA_OFFSET = 0*XFS_DIR2_SPACE_SIZE
		108	XFS_DIR2_LEAF_OFFSET = 1*XFS_DIR2_SPACE_SIZE
		109	XFS_DIR2_FREE_OFFSET = 2*XFS_DIR2_SPACE_SIZE
3913	dunkaist	110
		111	; data section magic constants for directories (xfs_dir2_data.h)
		112	XFS_DIR2_DATA_FD_COUNT = 3
		113
		114	; valid inode formats
		115	; enum xfs_dinode_fmt (xfs_dinode.h)
7736	dunkaist	116	XFS_DINODE_FMT_DEV = 0
		117	XFS_DINODE_FMT_LOCAL = 1
		118	XFS_DINODE_FMT_EXTENTS = 2
		119	XFS_DINODE_FMT_BTREE = 3
		120	XFS_DINODE_FMT_UUID = 4
3913	dunkaist	121
		122	; size of the unlinked inode hash table in the agi
		123	XFS_AGI_UNLINKED_BUCKETS = 64
		124
		125	; possible extent states
		126	; enum xfs_exntst_t (xfs_bmap_btree.h)
		127	XFS_EXT_NORM = 0
		128	XFS_EXT_UNWRITTEN = 1
		129	XFS_EXT_DMAPI_OFFLINE = 2
		130	XFS_EXT_INVALID = 3
		131
		132	; values for inode core flags / di_flags (xfs_dinode.h)
		133	XFS_DIFLAG_REALTIME_BIT = 0 ; file's blocks come from rt area
		134	XFS_DIFLAG_PREALLOC_BIT = 1 ; file space has been preallocated
		135	XFS_DIFLAG_NEWRTBM_BIT = 2 ; for rtbitmap inode, new format
		136	XFS_DIFLAG_NODUMP_BIT = 7 ; do not dump
		137	XFS_DIFLAG_REALTIME = (1 SHL XFS_DIFLAG_REALTIME_BIT)
		138	XFS_DIFLAG_PREALLOC = (1 SHL XFS_DIFLAG_PREALLOC_BIT)
		139	XFS_DIFLAG_NEWRTBM = (1 SHL XFS_DIFLAG_NEWRTBM_BIT)
		140	XFS_DIFLAG_NODUMP = (1 SHL XFS_DIFLAG_NODUMP_BIT)
		141
		142	; superblock _ondisk_ structure (xfs_sb.h)
		143	; this is _not_ the partition structure
		144	; for XFS partition structure see XFS below
		145	struct xfs_sb
7736	dunkaist	146	sb_magicnum dd ? ; signature, must be XFS_SB_MAGIC
		147	sb_blocksize dd ? ; block is the minimal file system unit, in bytes
		148	sb_dblocks DQ ? ; number of data blocks
		149	sb_rblocks DQ ? ; number of realtime blocks
		150	sb_rextents DQ ? ; number of realtime extents
		151	sb_uuid rb 16 ; file system unique identifier
		152	sb_logstart DQ ? ; starting block of log (for internal journal)
		153	sb_rootino DQ ? ; root inode number
		154	sb_rbmino DQ ? ; bitmap inode for realtime extents
		155	sb_rsumino DQ ? ; summary inode for rt bitmap
		156	sb_rextsize dd ? ; realtime extent size, blocks
		157	sb_agblocks dd ? ; size of an allocation group (the last one may be smaller!)
		158	sb_agcount dd ? ; number of allocation groups
		159	sb_rbmblocks dd ? ; number of rt bitmap blocks
		160	sb_logblocks dd ? ; number of log blocks
		161	sb_versionnum dw ? ; header version
		162	sb_sectsize dw ? ; volume sector size in bytes
		163	sb_inodesize dw ? ; inode size, bytes
		164	sb_inopblock dw ? ; inodes per block
		165	sb_fname rb 12 ; inodes per block (aka label)
		166	sb_blocklog db ? ; log2 of sb_blocksize
		167	sb_sectlog db ? ; log2 of sb_blocksize
		168	sb_inodelog db ? ; log2 of sb_inodesize
		169	sb_inopblog db ? ; log2 of sb_inopblock
		170	sb_agblklog db ? ; log2 of sb_agblocks (rounded up!)
		171	sb_rextslog db ? ; log2 of sb_rextents
		172	sb_inprogress db ? ; mkfs is in progress, don't mount
		173	sb_imax_pct db ? ; max % of fs for inode space
3913	dunkaist	174	; statistics
7736	dunkaist	175	sb_icount DQ ? ; allocated inodes
		176	sb_ifree DQ ? ; free inodes
		177	sb_fdblocks DQ ? ; free data blocks
		178	sb_frextents DQ ? ; free realtime extents
3913	dunkaist	179
7736	dunkaist	180	sb_uquotino DQ ? ; user quota inode
		181	sb_gquotino DQ ? ; group quota inode
		182	sb_qflags dw ? ; quota flags
		183	sb_flags db ? ; misc. flags
		184	sb_shared_vn db ? ; shared version number
		185	sb_inoalignmt dd ? ; inode chunk alignment, fsblocks
		186	sb_unit dd ? ; stripe or raid unit
		187	sb_width dd ? ; stripe or raid width
		188	sb_dirblklog db ? ; log2 of dir block size (fsbs)
		189	sb_logsectlog db ? ; log2 of the log sector size
		190	sb_logsectsize dw ? ; sector size for the log, bytes
		191	sb_logsunit dd ? ; stripe unit size for the log
		192	sb_features2 dd ? ; additional feature bits
		193	sb_bad_features2 dd ?
		194	sb_features_compat dd ?
		195	sb_features_ro_compat dd ?
		196	sb_features_incompat dd ?
		197	sb_features_log_incompat dd ?
		198	sb_crc dd ? ; superblock crc
		199	sb_spino_align dd ? ; sparse inode chunk alignment
		200	sb_pquotino DQ ? ; project quota inode
		201	sb_lsn DQ ? ; last write sequence
		202	sb_meta_uuid rb 16 ; metadata file system unique id
3913	dunkaist	203	ends
		204
		205	; inode core structure: basic information about file
		206	struct xfs_dinode_core
7736	dunkaist	207	di_magic dw ? ; inode magic = XFS_DINODE_MAGIC
		208	di_mode dw ? ; mode and type of file
		209	di_version db ? ; inode version
		210	di_format db ? ; format of di_c data
		211	di_onlink dw ? ; old number of links to file
		212	di_uid dd ? ; owner's user id
		213	di_gid dd ? ; owner's group id
		214	di_nlink dd ? ; number of links to file
9889	dunkaist	215	di_projid dd ? ; owner's project id
		216	di_big_nextents DQ ? ; iff NREXT64 is set
9888	dunkaist	217	di_atime DQ ; time last accessed
		218	di_mtime DQ ; time last modified
		219	di_ctime DQ ; time created/inode modified
7736	dunkaist	220	di_size DQ ? ; number of bytes in file
		221	di_nblocks DQ ? ; number of direct & btree blocks used
		222	di_extsize dd ? ; basic/minimum extent size for file
9889	dunkaist	223	union
		224	struct
		225	di_nextents dd ? ; number of extents in data fork
		226	di_anextents dw ? ; number of extents in attribute fork
		227	ends
		228	struct
		229	di_big_anextents dd ? ; attr extent counter is 32bit for NREXT64
		230	di_nrext64_pad dw ?
		231	ends
		232	ends
7736	dunkaist	233	di_forkoff db ? ; attr fork offs, <<3 for 64b align
		234	di_aformat db ? ; format of attr fork's data
		235	di_dmevmask dd ? ; DMIG event mask
		236	di_dmstate dw ? ; DMIG state info
		237	di_flags dw ? ; random flags, XFS_DIFLAG_...
		238	di_gen dd ? ; generation number
		239	di_next_unlinked dd ? ; unlinked but still used inode (if any, XFS_NULL otherwise)
3913	dunkaist	240	ends
		241
7736	dunkaist	242	struct xfs_dinode3_core xfs_dinode_core
		243	di_crc dd ? ; CRC of the inode
		244	di_changecount DQ ? ; number of attribute changes
		245	di_lsn DQ ? ; flush sequence
		246	di_flags2 DQ ? ; more random flags
		247	di_cowextsize dd ? ; basic cow extent size for file
		248	di_pad2 rb 12 ; more padding for future expansion
3913	dunkaist	249
7736	dunkaist	250	; fields only written to during inode creation
9888	dunkaist	251	di_crtime DQ ; time created
7736	dunkaist	252	di_ino DQ ? ; inode number
		253	di_uuid rb 16 ; UUID of the filesystem
		254	ends
		255
		256
3913	dunkaist	257	struct xfs_dir2_sf_hdr
7736	dunkaist	258	count db ?
		259	i8count db ?
		260	parent DQ ? ; parent inode number, 4 or 8 bytes
10051	ace_dent	261	ends
3913	dunkaist	262
		263	struct xfs_dir2_sf_entry
		264	namelen db ? ; actual name length (ASCII)
		265	offset rb 2 ; saved offset
		266	name db ? ; name, variable size
7736	dunkaist	267	inumber DQ ? ; 4 or 8 bytes
3913	dunkaist	268	ends
		269
7736	dunkaist	270	struct xfs_dir2_sf
		271	hdr xfs_dir2_sf_hdr
		272	entries xfs_dir2_sf_entry
		273	ends
3913	dunkaist	274
		275	; active entry in a data block
		276	; aligned to 8 bytes
		277	; tag appears as the last 2 bytes
		278	struct xfs_dir2_data_entry
7736	dunkaist	279	inumber DQ ?
		280	namelen db ?
		281	name db ? ; name bytes array without terminator
		282	; tag dw ? ; starting offset of the entry
3913	dunkaist	283	ends
		284
		285	; unused entry in a data block
		286	struct xfs_dir2_data_unused
7736	dunkaist	287	freetag dw ? ; XFS_DIR2_DATA_FREE_TAG aka XFS_NULL
3913	dunkaist	288	length dw ? ; total free length
7736	dunkaist	289	; tag dw ? ; starting offset of the entry
3913	dunkaist	290	ends
		291
		292	; generic data entry
		293	struct xfs_dir2_data_union
		294	union
		295	xentry xfs_dir2_data_entry
		296	unused xfs_dir2_data_unused
		297	ends
		298	ends
		299
		300	; describe a free area in the data block
		301	; the freespace will be formatted as a xfs_dir2_data_unused_t
		302	struct xfs_dir2_data_free
		303	offset dw ? ; start of freespace
		304	length dw ? ; length of freespace
		305	ends
		306
		307	; header for the data blocks
		308	; always at the beginning of a directory-sized block
		309	; the code knows that XFS_DIR2_DATA_FD_COUNT is 3
		310	struct xfs_dir2_data_hdr
7736	dunkaist	311	magic dd ? ; XFS_DIR2_DATA_MAGIC or XFS_DIR2_BLOCK_MAGIC
3913	dunkaist	312	bestfree xfs_dir2_data_free
		313	bestfree2 xfs_dir2_data_free
		314	bestfree3 xfs_dir2_data_free
		315	ends
		316
7736	dunkaist	317	struct xfs_dir3_data_hdr xfs_dir2_data_hdr
		318	magic3 dd ?
		319	crc dd ?
		320	blkno DQ ?
		321	lsn DQ ?
		322	uuid rb 16
		323	owner DQ ?
		324	ends
3913	dunkaist	325
		326	; leaf block entry
		327	struct xfs_dir2_leaf_entry
		328	hashval dd ? ; hash value of name
		329	address dd ? ; address of data entry
		330	ends
		331
		332	; the tail of directory block
		333	struct xfs_dir2_block_tail
		334	count dd ? ; count of leaf entries
		335	stale dd ? ; count of stale leaf entries
		336	ends
		337
		338	; generic single-block structure, for xfs_db
		339	struct xfs_dir2_block
7736	dunkaist	340	hdr xfs_dir2_data_hdr ; magic XFS_DIR2_DATA_MAGIC
3913	dunkaist	341	u xfs_dir2_data_union
		342	; leaf xfs_dir2_leaf_entry
		343	; tail xfs_dir2_block_tail
		344	ends
		345
		346	struct xfs_da_blkinfo
		347	forw dd ? ; previous block in list
		348	back dd ? ; following block in list
		349	magic dw ? ; validity check on block
		350	pad dw ? ; unused
		351	ends
		352
		353	struct xfs_dir2_leaf_hdr
7736	dunkaist	354	info xfs_da_blkinfo
		355	count dw ?
		356	stale dw ?
3913	dunkaist	357	ends
		358
7736	dunkaist	359	struct xfs_da3_blkinfo xfs_da_blkinfo
		360	crc dd ? ; CRC of block
		361	blkno DQ ? ; first block of the buffer
		362	lsn DQ ? ; sequence number of last write
		363	uuid rb 16 ; filesystem we belong to
		364	owner DQ ? ; inode that owns the block
		365	ends
3913	dunkaist	366
7736	dunkaist	367	struct xfs_dir3_leaf_hdr
		368	info xfs_da3_blkinfo
		369	count dw ?
		370	stale dw ?
		371	pad dd ?
3913	dunkaist	372	ends
		373
		374	; bests and tail are at the end of the block for single-leaf only
		375	; (magic = XFS_DIR2_LEAF1_MAGIC not XFS_DIR2_LEAFN_MAGIC)
		376	struct xfs_dir2_leaf
7736	dunkaist	377	hdr xfs_dir2_leaf_hdr
		378	ents xfs_dir2_leaf_entry
		379	; bests dw ?
		380	; tail xfs_dir2_leaf_tail
3913	dunkaist	381	ends
		382
7736	dunkaist	383	struct xfs_dir3_leaf
		384	hdr xfs_dir3_leaf_hdr
		385	ents xfs_dir2_leaf_entry
		386	; bests
		387	; tail
		388	ends
3913	dunkaist	389
		390	struct xfs_dir2_free_hdr
		391	magic dd ? ; XFS_DIR2_FREE_MAGIC
		392	firstdb dd ? ; db of first entry
		393	nvalid dd ? ; count of valid entries
		394	nused dd ? ; count of used entries
		395	ends
		396
		397	struct xfs_da_node_hdr
		398	info xfs_da_blkinfo
		399	count dw ?
		400	level dw ?
		401	ends
		402
		403	struct xfs_da_node_entry
		404	hashval dd ? ; hash value for this descendant
		405	before dd ? ; Btree block before this key
		406	ends
		407
		408	struct xfs_da_intnode
		409	hdr xfs_da_node_hdr
		410	btree xfs_da_node_entry
		411	ends
		412
7736	dunkaist	413	struct xfs_da3_node_hdr
		414	info xfs_da3_blkinfo
		415	count dw ?
		416	level dw ?
		417	pad dd ?
		418	ends
3913	dunkaist	419
7736	dunkaist	420	struct xfs_da3_intnode
		421	hdr xfs_da3_node_hdr
		422	btree xfs_da_node_entry
		423	ends
		424
3913	dunkaist	425	; packet extent
		426	struct xfs_bmbt_rec
7736	dunkaist	427	l0 DQ ?
		428	l1 DQ ?
3913	dunkaist	429	ends
		430
		431	; unpacked extent
		432	struct xfs_bmbt_irec
7736	dunkaist	433	br_startoff DQ ?
		434	br_startblock DQ ?
		435	br_blockcount dd ?
		436	br_state dd ?
3913	dunkaist	437	ends
		438
7736	dunkaist	439	struct xfs_dir2_bmx
		440	bmx xfs_bmbt_rec
		441	ends
3913	dunkaist	442
7736	dunkaist	443	; bmap root header
3913	dunkaist	444	struct xfs_bmdr_block
		445	bb_level dw ? ; 0 is a leaf
		446	bb_numrecs dw ? ; current number of data records
		447	ends
		448
		449	; key structure for non-leaf levels of the tree
		450	struct xfs_bmbt_key
7736	dunkaist	451	br_startoff DQ ? ; starting file offset
3913	dunkaist	452	ends
		453
7736	dunkaist	454	struct xfs_bmdr_ptr DQ
		455	ends
3913	dunkaist	456
7736	dunkaist	457	struct xfs_bmbt_ptr DQ
		458	ends
3913	dunkaist	459
		460	; long form header: bmap btrees
		461	; xfs_btree_lblock is xfs_bmbt_block (xfs_btree.h)
		462	struct xfs_bmbt_block
		463	bb_magic dd ? ; magic number for block type
		464	bb_level dw ? ; 0 is a leaf
		465	bb_numrecs dw ? ; current number of data records
7736	dunkaist	466	bb_leftsib DQ ? ; left sibling block or NULLDFSBNO
		467	bb_rightsib DQ ? ; right sibling block or NULLDFSBNO
3913	dunkaist	468	ends
		469
7736	dunkaist	470	struct xfs_bmbt3_block xfs_bmbt_block
		471	bb_blkno DQ ?
		472	bb_lsn DQ ?
		473	bb_uuid rb 16
		474	bb_owner DQ ?
		475	bb_crc dd ?
		476	bb_pad dd ?
		477	ends
3913	dunkaist	478
		479	struct xfs_inode
		480	di_core xfs_dinode_core ; main info, aka core
		481	ends
		482
		483	; internal data for every XFS partition
		484	; this _is_ XFS partition structure
7736	dunkaist	485	; most fields are unpacked or bswap'ed values of the superblock, see xfs_sb structure above
3913	dunkaist	486	struct XFS PARTITION
		487	Lock MUTEX ? ; access mutex
7736	dunkaist	488	sectsize dd ?
3913	dunkaist	489	blocksize dd ?
		490	dirblocksize dd ?
7736	dunkaist	491	inodesize dd ?
		492	rootino DQ ?
3913	dunkaist	493	versionnum dd ?
7736	dunkaist	494	version dd ?
3913	dunkaist	495	features2 dd ?
		496	inopblock dd ?
7736	dunkaist	497	blkpdirblk dd ?
3913	dunkaist	498	blocklog dd ?
		499	sectlog dd ?
		500	inodelog dd ?
		501	inopblog dd ?
		502	agblklog dd ?
7736	dunkaist	503	sectpblog dd ?
		504	dirblklog dd ? ; in fsblocks
3913	dunkaist	505	sectpblock dd ?
		506	agblocks dd ?
7736	dunkaist	507	dir2_leaf_offset_blocks DQ ?
		508	dir2_free_offset_blocks DQ ?
		509	agblockmask DQ ?
		510	inode_core_size dd ?
		511	features_incompat dd ?
		512	ftype_size dd ?
		513	dir_block_magic dd ?
		514	dir_data_magic dd ?
		515	dir_leaf1_magic dw ?
		516	dir_leafn_magic dw ?
		517	da_node_magic dw ?
		518	bmap_magic dd ?
10007	dunkaist	519	dirx_leaf_ents_offset dd ?
		520	dirx_leaf_hdr_count_offset dd ?
7736	dunkaist	521	bmbt_block_size dd ?
		522	dir_block_size dd ?
		523	dir_data_size dd ?
		524	dir_leaf1_size dd ?
		525	dir_leafn_size dd ?
		526	da_node_size dd ?
		527	da_blkinfo_size dd ?
9888	dunkaist	528	conv_time_to_kos_epoch dd ?
9889	dunkaist	529	nextents_offset dd ?
3913	dunkaist	530	; helpers, temporary vars, etc
7736	dunkaist	531	; should go to file descriptor and local vars?
		532	cur_block dd ?
		533	cur_block_data dd ?
		534	cur_inode dd ?
		535	cur_sect dd ?
		536	cur_dirblock dd ?
		537	tmp_inode dd ?
3913	dunkaist	538	extent xfs_bmbt_irec
		539	bytes_to_read dd ?
		540	bytes_read dd ?
7736	dunkaist	541	bytes_left_in_file DQ ?
		542	file_offset DQ ?
		543	file_buffer dd ?
3913	dunkaist	544	entries_read dd ?
7736	dunkaist	545	requested_cnt dd ?
		546	dir_sf_self_done dd ?
		547	dir_sf_parent_done dd ?
		548	entries_left_in_dir dd ?
		549	entries_to_skip dd ?
3913	dunkaist	550	max_dirblockaddr dd ?
		551	cur_inode_save dd ?
7736	dunkaist	552	shortform_inodelen dd ?
		553	bdfe_nameenc dd ?
		554	bdfe_len dd ?
		555	bdfe_process dd ?
		556	inode_self DQ ?
		557	bdfe_buf dd ?
3913	dunkaist	558	eof dd ?
7736	dunkaist	559	offset_begin DQ ?
		560	offset_end DQ ?
3913	dunkaist	561	ends
7736	dunkaist	562
		563	struct f70s0arg
		564	sf dd ?
		565	offset DQ ?
		566	count dd ?
		567	buf dd ?
		568	zero db ?
		569	path dd ?
		570	ends
		571
		572	struct f70s1arg
		573	sf dd ?
		574	start_idx dd ?
		575	encoding dd ?
		576	count dd ?
		577	buf dd ?
		578	zero db ?
		579	path dd ?
		580	ends
		581
		582	struct f70s5arg
		583	sf dd ?
		584	dd ?
		585	xflags dd ? ; name flags is already used
		586	dd ?
		587	buf dd ?
		588	zero db ?
		589	path dd ?
		590	ends
		591
		592	struct bdfe_hdr
		593	version dd ?
		594	read_cnt dd ?
		595	total_cnt dd ?
		596	zeroed rd 5
		597	ends
		598
		599	struct bdfe
		600	attr dd ?
		601	nameenc dd ?
		602	ctime dd ?
		603	cdate dd ?
		604	atime dd ?
		605	adate dd ?
		606	mtime dd ?
		607	mdate dd ?
		608	size DQ ?
		609	name db ?
		610	ends

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(root)/kernel/trunk/fs/xfs.inc @ 7657 – Rev 10051