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

Rev	Author	Line No.	Line
4850	mario79	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
7736	dunkaist	3	;; Copyright (C) KolibriOS team 2013-2020. All rights reserved. ;;
		4	;; Distributed under terms of the GNU General Public License ;;
4850	mario79	5	;; ;;
		6	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		7
		8	$Revision: 7736 $
		9
7736	dunkaist	10	; file types from stat.h
		11	S_IFMT = 0170000o ; These bits determine file type
		12	S_IFDIR = 0040000o ; Directory
		13	S_IFCHR = 0020000o ; Character device
		14	S_IFBLK = 0060000o ; Block device
		15	S_IFREG = 0100000o ; Regular file
		16	S_IFIFO = 0010000o ; FIFO
		17	S_IFLNK = 0120000o ; Symbolic link
		18	S_IFSOCK = 0140000o ; Socket
4850	mario79	19
3913	dunkaist	20	; XFS null constant: empty fields must be all ones, not zeros!
		21	XFS_NULL = -1
		22
		23	XFS_SECT_SB = 0
		24
		25	; signatures of file system structures
		26	XFS_AGF_MAGIC = 'XAGF'
		27	XFS_DINODE_MAGIC = 'IN'
		28	XFS_BMAP_MAGIC = 'BMAP'
7736	dunkaist	29	XFS_DA_NODE_MAGIC = 0xbefe
		30	XFS_DIR2_LEAF1_MAGIC = 0xf1d2
		31	XFS_DIR2_LEAFN_MAGIC = 0xffd2
3913	dunkaist	32	XFS_DIR2_BLOCK_MAGIC = 'XD2B'
		33	XFS_DIR2_DATA_MAGIC = 'XD2D'
		34
7736	dunkaist	35	XFS_BMAP3_MAGIC = 'BMA3'
		36	XFS_DA3_NODE_MAGIC = 0xbe3e ; non-leaf blocks
		37	XFS_DIR3_LEAF1_MAGIC = 0xf13d ; v3 dir single blks
		38	XFS_DIR3_LEAFN_MAGIC = 0xff3d ; v3 dir multi blks
		39	XFS_DIR3_BLOCK_MAGIC = 'XDB3' ; single block dirs
		40	XFS_DIR3_DATA_MAGIC = 'XDD3' ; multiblock dirs
3913	dunkaist	41
7736	dunkaist	42	XFS_SB_MAGIC = 'XFSB'
		43	XFS_SB_VERSION_NUMBITS = 0x000f
		44	XFS_SB_VERSION_ALLFBITS = 0xfff0
		45	XFS_SB_VERSION_REALFBITS = 0x0ff0
		46	XFS_SB_VERSION_ATTRBIT = 0x0010
		47	XFS_SB_VERSION_NLINKBIT = 0x0020
		48	XFS_SB_VERSION_QUOTABIT = 0x0040
		49	XFS_SB_VERSION_ALIGNBIT = 0x0080
		50	XFS_SB_VERSION_DALIGNBIT = 0x0100
		51	XFS_SB_VERSION_SHAREDBIT = 0x0200
		52	XFS_SB_VERSION_LOGV2BIT = 0x0400
		53	XFS_SB_VERSION_SECTORBIT = 0x0800
		54	XFS_SB_VERSION_EXTFLGBIT = 0x1000
		55	XFS_SB_VERSION_DIRV2BIT = 0x2000
		56	XFS_SB_VERSION_BORGBIT = 0x4000 ; ASCII only case-insensitive
		57	XFS_SB_VERSION_MOREBITSBIT = 0x8000
		58
		59	XFS_SB_VERSION_SUPPORTED = XFS_SB_VERSION_NUMBITS OR \
		60	XFS_SB_VERSION_ATTRBIT OR \
		61	XFS_SB_VERSION_NLINKBIT OR \
		62	XFS_SB_VERSION_QUOTABIT OR \
		63	XFS_SB_VERSION_ALIGNBIT OR \
		64	XFS_SB_VERSION_LOGV2BIT OR \
		65	XFS_SB_VERSION_SECTORBIT OR \
		66	XFS_SB_VERSION_EXTFLGBIT OR \
		67	XFS_SB_VERSION_DIRV2BIT OR \
		68	XFS_SB_VERSION_MOREBITSBIT
		69
		70	XFS_SB_VERSION2_RESERVED1BIT = 0x00000001
		71	XFS_SB_VERSION2_LAZYSBCOUNTBIT = 0x00000002 ; Superblk counters
		72	XFS_SB_VERSION2_RESERVED4BIT = 0x00000004
		73	XFS_SB_VERSION2_ATTR2BIT = 0x00000008 ; Inline attr rework
		74	XFS_SB_VERSION2_PARENTBIT = 0x00000010 ; parent pointers in xattr
		75	XFS_SB_VERSION2_PROJID32BIT = 0x00000080 ; 32 bit project id
		76	XFS_SB_VERSION2_CRCBIT = 0x00000100 ; metadata CRCs
		77	XFS_SB_VERSION2_FTYPE = 0x00000200 ; inode type in dir
		78
		79	XFS_SB_VERSION2_SUPPORTED = XFS_SB_VERSION2_LAZYSBCOUNTBIT OR \
		80	XFS_SB_VERSION2_ATTR2BIT OR \
		81	XFS_SB_VERSION2_PARENTBIT OR \
		82	XFS_SB_VERSION2_PROJID32BIT OR \
		83	XFS_SB_VERSION2_CRCBIT OR \
		84	XFS_SB_VERSION2_FTYPE
		85
		86	XFS_SB_FEAT_INCOMPAT_FTYPE = 1 ; filetype in dirent
		87	XFS_SB_FEAT_INCOMPAT_SPINODES = 2 ; sparse inode chunks
		88	XFS_SB_FEAT_INCOMPAT_META_UUID = 4 ; metadata UUID
		89	XFS_SB_FEAT_INCOMPAT_SUPPORTED = XFS_SB_FEAT_INCOMPAT_FTYPE OR \
		90	XFS_SB_FEAT_INCOMPAT_SPINODES OR \
		91	XFS_SB_FEAT_INCOMPAT_META_UUID
		92
3913	dunkaist	93	; bitfield lengths for packed extent
		94	; MSB to LSB / left to right
		95	BMBT_EXNTFLAG_BITLEN = 1
		96	BMBT_STARTOFF_BITLEN = 54
		97	BMBT_STARTBLOCK_BITLEN = 52
		98	BMBT_BLOCKCOUNT_BITLEN = 21
		99
7736	dunkaist	100	XFS_DIR2_DATA_ALIGN_LOG = 3
		101	XFS_DIR2_DATA_ALIGN = 1 SHL XFS_DIR2_DATA_ALIGN_LOG
3913	dunkaist	102	XFS_DIR2_SPACE_SIZE = (1 SHL (32 + XFS_DIR2_DATA_ALIGN_LOG))
7736	dunkaist	103	XFS_DIR2_DATA_OFFSET = 0*XFS_DIR2_SPACE_SIZE
		104	XFS_DIR2_LEAF_OFFSET = 1*XFS_DIR2_SPACE_SIZE
		105	XFS_DIR2_FREE_OFFSET = 2*XFS_DIR2_SPACE_SIZE
3913	dunkaist	106
		107	; data section magic constants for directories (xfs_dir2_data.h)
		108	XFS_DIR2_DATA_FD_COUNT = 3
		109
		110	; valid inode formats
		111	; enum xfs_dinode_fmt (xfs_dinode.h)
7736	dunkaist	112	XFS_DINODE_FMT_DEV = 0
		113	XFS_DINODE_FMT_LOCAL = 1
		114	XFS_DINODE_FMT_EXTENTS = 2
		115	XFS_DINODE_FMT_BTREE = 3
		116	XFS_DINODE_FMT_UUID = 4
3913	dunkaist	117
		118	; size of the unlinked inode hash table in the agi
		119	XFS_AGI_UNLINKED_BUCKETS = 64
		120
		121	; possible extent states
		122	; enum xfs_exntst_t (xfs_bmap_btree.h)
		123	XFS_EXT_NORM = 0
		124	XFS_EXT_UNWRITTEN = 1
		125	XFS_EXT_DMAPI_OFFLINE = 2
		126	XFS_EXT_INVALID = 3
		127
		128	; values for inode core flags / di_flags (xfs_dinode.h)
		129	XFS_DIFLAG_REALTIME_BIT = 0 ; file's blocks come from rt area
		130	XFS_DIFLAG_PREALLOC_BIT = 1 ; file space has been preallocated
		131	XFS_DIFLAG_NEWRTBM_BIT = 2 ; for rtbitmap inode, new format
		132	XFS_DIFLAG_NODUMP_BIT = 7 ; do not dump
		133	XFS_DIFLAG_REALTIME = (1 SHL XFS_DIFLAG_REALTIME_BIT)
		134	XFS_DIFLAG_PREALLOC = (1 SHL XFS_DIFLAG_PREALLOC_BIT)
		135	XFS_DIFLAG_NEWRTBM = (1 SHL XFS_DIFLAG_NEWRTBM_BIT)
		136	XFS_DIFLAG_NODUMP = (1 SHL XFS_DIFLAG_NODUMP_BIT)
		137
		138	; superblock _ondisk_ structure (xfs_sb.h)
		139	; this is _not_ the partition structure
		140	; for XFS partition structure see XFS below
		141	struct xfs_sb
7736	dunkaist	142	sb_magicnum dd ? ; signature, must be XFS_SB_MAGIC
		143	sb_blocksize dd ? ; block is the minimal file system unit, in bytes
		144	sb_dblocks DQ ? ; number of data blocks
		145	sb_rblocks DQ ? ; number of realtime blocks
		146	sb_rextents DQ ? ; number of realtime extents
		147	sb_uuid rb 16 ; file system unique identifier
		148	sb_logstart DQ ? ; starting block of log (for internal journal)
		149	sb_rootino DQ ? ; root inode number
		150	sb_rbmino DQ ? ; bitmap inode for realtime extents
		151	sb_rsumino DQ ? ; summary inode for rt bitmap
		152	sb_rextsize dd ? ; realtime extent size, blocks
		153	sb_agblocks dd ? ; size of an allocation group (the last one may be smaller!)
		154	sb_agcount dd ? ; number of allocation groups
		155	sb_rbmblocks dd ? ; number of rt bitmap blocks
		156	sb_logblocks dd ? ; number of log blocks
		157	sb_versionnum dw ? ; header version
		158	sb_sectsize dw ? ; volume sector size in bytes
		159	sb_inodesize dw ? ; inode size, bytes
		160	sb_inopblock dw ? ; inodes per block
		161	sb_fname rb 12 ; inodes per block (aka label)
		162	sb_blocklog db ? ; log2 of sb_blocksize
		163	sb_sectlog db ? ; log2 of sb_blocksize
		164	sb_inodelog db ? ; log2 of sb_inodesize
		165	sb_inopblog db ? ; log2 of sb_inopblock
		166	sb_agblklog db ? ; log2 of sb_agblocks (rounded up!)
		167	sb_rextslog db ? ; log2 of sb_rextents
		168	sb_inprogress db ? ; mkfs is in progress, don't mount
		169	sb_imax_pct db ? ; max % of fs for inode space
3913	dunkaist	170	; statistics
7736	dunkaist	171	sb_icount DQ ? ; allocated inodes
		172	sb_ifree DQ ? ; free inodes
		173	sb_fdblocks DQ ? ; free data blocks
		174	sb_frextents DQ ? ; free realtime extents
3913	dunkaist	175
7736	dunkaist	176	sb_uquotino DQ ? ; user quota inode
		177	sb_gquotino DQ ? ; group quota inode
		178	sb_qflags dw ? ; quota flags
		179	sb_flags db ? ; misc. flags
		180	sb_shared_vn db ? ; shared version number
		181	sb_inoalignmt dd ? ; inode chunk alignment, fsblocks
		182	sb_unit dd ? ; stripe or raid unit
		183	sb_width dd ? ; stripe or raid width
		184	sb_dirblklog db ? ; log2 of dir block size (fsbs)
		185	sb_logsectlog db ? ; log2 of the log sector size
		186	sb_logsectsize dw ? ; sector size for the log, bytes
		187	sb_logsunit dd ? ; stripe unit size for the log
		188	sb_features2 dd ? ; additional feature bits
		189	sb_bad_features2 dd ?
		190	sb_features_compat dd ?
		191	sb_features_ro_compat dd ?
		192	sb_features_incompat dd ?
		193	sb_features_log_incompat dd ?
		194	sb_crc dd ? ; superblock crc
		195	sb_spino_align dd ? ; sparse inode chunk alignment
		196	sb_pquotino DQ ? ; project quota inode
		197	sb_lsn DQ ? ; last write sequence
		198	sb_meta_uuid rb 16 ; metadata file system unique id
3913	dunkaist	199	ends
		200
		201	; structure to store create, access and modification time in inode core
		202	struct xfs_timestamp
		203	t_sec dd ?
		204	t_nsec dd ? ; nanoseconds
		205	ends
		206
		207	; inode core structure: basic information about file
		208	struct xfs_dinode_core
7736	dunkaist	209	di_magic dw ? ; inode magic = XFS_DINODE_MAGIC
		210	di_mode dw ? ; mode and type of file
		211	di_version db ? ; inode version
		212	di_format db ? ; format of di_c data
		213	di_onlink dw ? ; old number of links to file
		214	di_uid dd ? ; owner's user id
		215	di_gid dd ? ; owner's group id
		216	di_nlink dd ? ; number of links to file
		217	di_projid dw ? ; owner's project id
		218	di_pad rb 8 ; unused, zeroed space
		219	di_flushiter dw ? ; incremented on flush
		220	di_atime xfs_timestamp ; time last accessed
		221	di_mtime xfs_timestamp ; time last modified
		222	di_ctime xfs_timestamp ; time created/inode modified
		223	di_size DQ ? ; number of bytes in file
		224	di_nblocks DQ ? ; number of direct & btree blocks used
		225	di_extsize dd ? ; basic/minimum extent size for file
		226	di_nextents dd ? ; number of extents in data fork
		227	di_anextents dw ? ; number of extents in attribute fork
		228	di_forkoff db ? ; attr fork offs, <<3 for 64b align
		229	di_aformat db ? ; format of attr fork's data
		230	di_dmevmask dd ? ; DMIG event mask
		231	di_dmstate dw ? ; DMIG state info
		232	di_flags dw ? ; random flags, XFS_DIFLAG_...
		233	di_gen dd ? ; generation number
		234	di_next_unlinked dd ? ; unlinked but still used inode (if any, XFS_NULL otherwise)
3913	dunkaist	235	ends
		236
7736	dunkaist	237	struct xfs_dinode3_core xfs_dinode_core
		238	di_crc dd ? ; CRC of the inode
		239	di_changecount DQ ? ; number of attribute changes
		240	di_lsn DQ ? ; flush sequence
		241	di_flags2 DQ ? ; more random flags
		242	di_cowextsize dd ? ; basic cow extent size for file
		243	di_pad2 rb 12 ; more padding for future expansion
3913	dunkaist	244
7736	dunkaist	245	; fields only written to during inode creation
		246	di_crtime xfs_timestamp ; time created
		247	di_ino DQ ? ; inode number
		248	di_uuid rb 16 ; UUID of the filesystem
		249	ends
		250
		251
3913	dunkaist	252	struct xfs_dir2_sf_hdr
7736	dunkaist	253	count db ?
		254	i8count db ?
		255	parent DQ ? ; parent inode number, 4 or 8 bytes
3913	dunkaist	256	ends
		257
		258	struct xfs_dir2_sf_entry
		259	namelen db ? ; actual name length (ASCII)
		260	offset rb 2 ; saved offset
		261	name db ? ; name, variable size
7736	dunkaist	262	inumber DQ ? ; 4 or 8 bytes
3913	dunkaist	263	ends
		264
7736	dunkaist	265	struct xfs_dir2_sf
		266	hdr xfs_dir2_sf_hdr
		267	entries xfs_dir2_sf_entry
		268	ends
3913	dunkaist	269
		270	; active entry in a data block
		271	; aligned to 8 bytes
		272	; tag appears as the last 2 bytes
		273	struct xfs_dir2_data_entry
7736	dunkaist	274	inumber DQ ?
		275	namelen db ?
		276	name db ? ; name bytes array without terminator
		277	; tag dw ? ; starting offset of the entry
3913	dunkaist	278	ends
		279
		280	; unused entry in a data block
		281	struct xfs_dir2_data_unused
7736	dunkaist	282	freetag dw ? ; XFS_DIR2_DATA_FREE_TAG aka XFS_NULL
3913	dunkaist	283	length dw ? ; total free length
7736	dunkaist	284	; tag dw ? ; starting offset of the entry
3913	dunkaist	285	ends
		286
		287	; generic data entry
		288	struct xfs_dir2_data_union
		289	union
		290	xentry xfs_dir2_data_entry
		291	unused xfs_dir2_data_unused
		292	ends
		293	ends
		294
		295	; describe a free area in the data block
		296	; the freespace will be formatted as a xfs_dir2_data_unused_t
		297	struct xfs_dir2_data_free
		298	offset dw ? ; start of freespace
		299	length dw ? ; length of freespace
		300	ends
		301
		302	; header for the data blocks
		303	; always at the beginning of a directory-sized block
		304	; the code knows that XFS_DIR2_DATA_FD_COUNT is 3
		305	struct xfs_dir2_data_hdr
7736	dunkaist	306	magic dd ? ; XFS_DIR2_DATA_MAGIC or XFS_DIR2_BLOCK_MAGIC
3913	dunkaist	307	bestfree xfs_dir2_data_free
		308	bestfree2 xfs_dir2_data_free
		309	bestfree3 xfs_dir2_data_free
		310	ends
		311
7736	dunkaist	312	struct xfs_dir3_data_hdr xfs_dir2_data_hdr
		313	magic3 dd ?
		314	crc dd ?
		315	blkno DQ ?
		316	lsn DQ ?
		317	uuid rb 16
		318	owner DQ ?
		319	ends
3913	dunkaist	320
		321	; leaf block entry
		322	struct xfs_dir2_leaf_entry
		323	hashval dd ? ; hash value of name
		324	address dd ? ; address of data entry
		325	ends
		326
		327	; the tail of directory block
		328	struct xfs_dir2_block_tail
		329	count dd ? ; count of leaf entries
		330	stale dd ? ; count of stale leaf entries
		331	ends
		332
		333	; generic single-block structure, for xfs_db
		334	struct xfs_dir2_block
7736	dunkaist	335	hdr xfs_dir2_data_hdr ; magic XFS_DIR2_DATA_MAGIC
3913	dunkaist	336	u xfs_dir2_data_union
		337	; leaf xfs_dir2_leaf_entry
		338	; tail xfs_dir2_block_tail
		339	ends
		340
		341	struct xfs_da_blkinfo
		342	forw dd ? ; previous block in list
		343	back dd ? ; following block in list
		344	magic dw ? ; validity check on block
		345	pad dw ? ; unused
		346	ends
		347
		348	struct xfs_dir2_leaf_hdr
7736	dunkaist	349	info xfs_da_blkinfo
		350	count dw ?
		351	stale dw ?
3913	dunkaist	352	ends
		353
7736	dunkaist	354	struct xfs_da3_blkinfo xfs_da_blkinfo
		355	crc dd ? ; CRC of block
		356	blkno DQ ? ; first block of the buffer
		357	lsn DQ ? ; sequence number of last write
		358	uuid rb 16 ; filesystem we belong to
		359	owner DQ ? ; inode that owns the block
		360	ends
3913	dunkaist	361
7736	dunkaist	362	struct xfs_dir3_leaf_hdr
		363	info xfs_da3_blkinfo
		364	count dw ?
		365	stale dw ?
		366	pad dd ?
3913	dunkaist	367	ends
		368
		369	; bests and tail are at the end of the block for single-leaf only
		370	; (magic = XFS_DIR2_LEAF1_MAGIC not XFS_DIR2_LEAFN_MAGIC)
		371	struct xfs_dir2_leaf
7736	dunkaist	372	hdr xfs_dir2_leaf_hdr
		373	ents xfs_dir2_leaf_entry
		374	; bests dw ?
		375	; tail xfs_dir2_leaf_tail
3913	dunkaist	376	ends
		377
7736	dunkaist	378	struct xfs_dir3_leaf
		379	hdr xfs_dir3_leaf_hdr
		380	ents xfs_dir2_leaf_entry
		381	; bests
		382	; tail
		383	ends
3913	dunkaist	384
		385	struct xfs_dir2_free_hdr
		386	magic dd ? ; XFS_DIR2_FREE_MAGIC
		387	firstdb dd ? ; db of first entry
		388	nvalid dd ? ; count of valid entries
		389	nused dd ? ; count of used entries
		390	ends
		391
		392	struct xfs_da_node_hdr
		393	info xfs_da_blkinfo
		394	count dw ?
		395	level dw ?
		396	ends
		397
		398	struct xfs_da_node_entry
		399	hashval dd ? ; hash value for this descendant
		400	before dd ? ; Btree block before this key
		401	ends
		402
		403	struct xfs_da_intnode
		404	hdr xfs_da_node_hdr
		405	btree xfs_da_node_entry
		406	ends
		407
7736	dunkaist	408	struct xfs_da3_node_hdr
		409	info xfs_da3_blkinfo
		410	count dw ?
		411	level dw ?
		412	pad dd ?
		413	ends
3913	dunkaist	414
7736	dunkaist	415	struct xfs_da3_intnode
		416	hdr xfs_da3_node_hdr
		417	btree xfs_da_node_entry
		418	ends
		419
3913	dunkaist	420	; packet extent
		421	struct xfs_bmbt_rec
7736	dunkaist	422	l0 DQ ?
		423	l1 DQ ?
3913	dunkaist	424	ends
		425
		426	; unpacked extent
		427	struct xfs_bmbt_irec
7736	dunkaist	428	br_startoff DQ ?
		429	br_startblock DQ ?
		430	br_blockcount dd ?
		431	br_state dd ?
3913	dunkaist	432	ends
		433
7736	dunkaist	434	struct xfs_dir2_bmx
		435	bmx xfs_bmbt_rec
		436	ends
3913	dunkaist	437
7736	dunkaist	438	; bmap root header
3913	dunkaist	439	struct xfs_bmdr_block
		440	bb_level dw ? ; 0 is a leaf
		441	bb_numrecs dw ? ; current number of data records
		442	ends
		443
		444	; key structure for non-leaf levels of the tree
		445	struct xfs_bmbt_key
7736	dunkaist	446	br_startoff DQ ? ; starting file offset
3913	dunkaist	447	ends
		448
7736	dunkaist	449	struct xfs_bmdr_ptr DQ
		450	ends
3913	dunkaist	451
7736	dunkaist	452	struct xfs_bmbt_ptr DQ
		453	ends
3913	dunkaist	454
		455	; long form header: bmap btrees
		456	; xfs_btree_lblock is xfs_bmbt_block (xfs_btree.h)
		457	struct xfs_bmbt_block
		458	bb_magic dd ? ; magic number for block type
		459	bb_level dw ? ; 0 is a leaf
		460	bb_numrecs dw ? ; current number of data records
7736	dunkaist	461	bb_leftsib DQ ? ; left sibling block or NULLDFSBNO
		462	bb_rightsib DQ ? ; right sibling block or NULLDFSBNO
3913	dunkaist	463	ends
		464
7736	dunkaist	465	struct xfs_bmbt3_block xfs_bmbt_block
		466	bb_blkno DQ ?
		467	bb_lsn DQ ?
		468	bb_uuid rb 16
		469	bb_owner DQ ?
		470	bb_crc dd ?
		471	bb_pad dd ?
		472	ends
3913	dunkaist	473
		474	struct xfs_inode
		475	di_core xfs_dinode_core ; main info, aka core
7736	dunkaist	476	union
		477	di_u db ? ; data fork inode part
		478	dir2_sf xfs_dir2_sf
		479	bmx xfs_dir2_bmx
		480	ends
3913	dunkaist	481	; di_a db ? ; data attribute
		482	ends
		483
7736	dunkaist	484	struct xfs_agf
		485	agf_magicnum dd ? ; magic number == XFS_AGF_MAGIC
		486	agf_versionnum dd ? ; header version == XFS_AGF_VERSION
		487	agf_seqno dd ? ; sequence # starting from 0
		488	agf_length dd ? ; size in blocks of AG
		489	agf_roots dd ?
		490	agf_levels dd ?
		491	agf_flfirst dd ?
		492	agf_fllast dd ?
		493	agf_flcount dd ?
		494	agf_freeblks dd ? ; free blocks in AG
		495	ends
3913	dunkaist	496
		497	; internal data for every XFS partition
		498	; this _is_ XFS partition structure
7736	dunkaist	499	; most fields are unpacked or bswap'ed values of the superblock, see xfs_sb structure above
3913	dunkaist	500	struct XFS PARTITION
		501	Lock MUTEX ? ; access mutex
7736	dunkaist	502	sectsize dd ?
3913	dunkaist	503	blocksize dd ?
		504	dirblocksize dd ?
7736	dunkaist	505	inodesize dd ?
		506	rootino DQ ?
3913	dunkaist	507	versionnum dd ?
7736	dunkaist	508	version dd ?
3913	dunkaist	509	features2 dd ?
		510	inopblock dd ?
7736	dunkaist	511	blkpdirblk dd ?
3913	dunkaist	512	blocklog dd ?
		513	sectlog dd ?
		514	inodelog dd ?
		515	inopblog dd ?
		516	agblklog dd ?
7736	dunkaist	517	sectpblog dd ?
		518	dirblklog dd ? ; in fsblocks
3913	dunkaist	519	sectpblock dd ?
		520	agblocks dd ?
7736	dunkaist	521	dir2_leaf_offset_blocks DQ ?
		522	dir2_free_offset_blocks DQ ?
		523	agblockmask DQ ?
		524	inode_core_size dd ?
		525	features_incompat dd ?
		526	ftype_size dd ?
		527	dir_block_magic dd ?
		528	dir_data_magic dd ?
		529	dir_leaf1_magic dw ?
		530	dir_leafn_magic dw ?
		531	da_node_magic dw ?
		532	bmap_magic dd ?
		533	bmbt_block_size dd ?
		534	dir_block_size dd ?
		535	dir_data_size dd ?
		536	dir_leaf1_size dd ?
		537	dir_leafn_size dd ?
		538	da_node_size dd ?
		539	da_blkinfo_size dd ?
3913	dunkaist	540	; helpers, temporary vars, etc
7736	dunkaist	541	; should go to file descriptor and local vars?
		542	cur_block dd ?
		543	cur_block_data dd ?
		544	cur_inode dd ?
		545	cur_sect dd ?
		546	cur_dirblock dd ?
		547	tmp_inode dd ?
3913	dunkaist	548	extent xfs_bmbt_irec
		549	bytes_to_read dd ?
		550	bytes_read dd ?
7736	dunkaist	551	bytes_left_in_file DQ ?
		552	file_offset DQ ?
		553	file_buffer dd ?
3913	dunkaist	554	entries_read dd ?
7736	dunkaist	555	requested_cnt dd ?
		556	dir_sf_self_done dd ?
		557	dir_sf_parent_done dd ?
		558	entries_left_in_dir dd ?
		559	entries_to_skip dd ?
3913	dunkaist	560	max_dirblockaddr dd ?
		561	cur_inode_save dd ?
7736	dunkaist	562	shortform_inodelen dd ?
		563	bdfe_nameenc dd ?
		564	bdfe_len dd ?
		565	bdfe_process dd ?
		566	inode_self DQ ?
		567	bdfe_buf dd ?
3913	dunkaist	568	eof dd ?
7736	dunkaist	569	offset_begin DQ ?
		570	offset_end DQ ?
3913	dunkaist	571	ends
7736	dunkaist	572
		573	struct f70s0arg
		574	sf dd ?
		575	offset DQ ?
		576	count dd ?
		577	buf dd ?
		578	zero db ?
		579	path dd ?
		580	ends
		581
		582	struct f70s1arg
		583	sf dd ?
		584	start_idx dd ?
		585	encoding dd ?
		586	count dd ?
		587	buf dd ?
		588	zero db ?
		589	path dd ?
		590	ends
		591
		592	struct f70s5arg
		593	sf dd ?
		594	dd ?
		595	xflags dd ? ; name flags is already used
		596	dd ?
		597	buf dd ?
		598	zero db ?
		599	path dd ?
		600	ends
		601
		602	struct bdfe_hdr
		603	version dd ?
		604	read_cnt dd ?
		605	total_cnt dd ?
		606	zeroed rd 5
		607	ends
		608
		609	struct bdfe
		610	attr dd ?
		611	nameenc dd ?
		612	; nameenc db ?
		613	; reserved db 3 dup(?)
		614	ctime dd ?
		615	cdate dd ?
		616	atime dd ?
		617	adate dd ?
		618	mtime dd ?
		619	mdate dd ?
		620	size DQ ?
		621	name db ?
		622	ends

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(root)/kernel/trunk/fs/xfs.inc – Rev 7736