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

Rev	Author	Line No.	Line
4850	mario79	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
9888	dunkaist	3	;; Copyright (C) KolibriOS team 2013-2022. All rights reserved. ;;
7736	dunkaist	4	;; Distributed under terms of the GNU General Public License ;;
4850	mario79	5	;; ;;
		6	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		7
		8	$Revision: 9888 $
		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
9888	dunkaist	89	XFS_SB_FEAT_INCOMPAT_BIGTIME = 8 ; large timestamps
7736	dunkaist	90	XFS_SB_FEAT_INCOMPAT_SUPPORTED = XFS_SB_FEAT_INCOMPAT_FTYPE OR \
		91	XFS_SB_FEAT_INCOMPAT_SPINODES OR \
9888	dunkaist	92	XFS_SB_FEAT_INCOMPAT_META_UUID OR \
		93	XFS_SB_FEAT_INCOMPAT_BIGTIME
7736	dunkaist	94
3913	dunkaist	95	; bitfield lengths for packed extent
		96	; MSB to LSB / left to right
		97	BMBT_EXNTFLAG_BITLEN = 1
		98	BMBT_STARTOFF_BITLEN = 54
		99	BMBT_STARTBLOCK_BITLEN = 52
		100	BMBT_BLOCKCOUNT_BITLEN = 21
		101
7736	dunkaist	102	XFS_DIR2_DATA_ALIGN_LOG = 3
		103	XFS_DIR2_DATA_ALIGN = 1 SHL XFS_DIR2_DATA_ALIGN_LOG
3913	dunkaist	104	XFS_DIR2_SPACE_SIZE = (1 SHL (32 + XFS_DIR2_DATA_ALIGN_LOG))
7736	dunkaist	105	XFS_DIR2_DATA_OFFSET = 0*XFS_DIR2_SPACE_SIZE
		106	XFS_DIR2_LEAF_OFFSET = 1*XFS_DIR2_SPACE_SIZE
		107	XFS_DIR2_FREE_OFFSET = 2*XFS_DIR2_SPACE_SIZE
3913	dunkaist	108
		109	; data section magic constants for directories (xfs_dir2_data.h)
		110	XFS_DIR2_DATA_FD_COUNT = 3
		111
		112	; valid inode formats
		113	; enum xfs_dinode_fmt (xfs_dinode.h)
7736	dunkaist	114	XFS_DINODE_FMT_DEV = 0
		115	XFS_DINODE_FMT_LOCAL = 1
		116	XFS_DINODE_FMT_EXTENTS = 2
		117	XFS_DINODE_FMT_BTREE = 3
		118	XFS_DINODE_FMT_UUID = 4
3913	dunkaist	119
		120	; size of the unlinked inode hash table in the agi
		121	XFS_AGI_UNLINKED_BUCKETS = 64
		122
		123	; possible extent states
		124	; enum xfs_exntst_t (xfs_bmap_btree.h)
		125	XFS_EXT_NORM = 0
		126	XFS_EXT_UNWRITTEN = 1
		127	XFS_EXT_DMAPI_OFFLINE = 2
		128	XFS_EXT_INVALID = 3
		129
		130	; values for inode core flags / di_flags (xfs_dinode.h)
		131	XFS_DIFLAG_REALTIME_BIT = 0 ; file's blocks come from rt area
		132	XFS_DIFLAG_PREALLOC_BIT = 1 ; file space has been preallocated
		133	XFS_DIFLAG_NEWRTBM_BIT = 2 ; for rtbitmap inode, new format
		134	XFS_DIFLAG_NODUMP_BIT = 7 ; do not dump
		135	XFS_DIFLAG_REALTIME = (1 SHL XFS_DIFLAG_REALTIME_BIT)
		136	XFS_DIFLAG_PREALLOC = (1 SHL XFS_DIFLAG_PREALLOC_BIT)
		137	XFS_DIFLAG_NEWRTBM = (1 SHL XFS_DIFLAG_NEWRTBM_BIT)
		138	XFS_DIFLAG_NODUMP = (1 SHL XFS_DIFLAG_NODUMP_BIT)
		139
		140	; superblock _ondisk_ structure (xfs_sb.h)
		141	; this is _not_ the partition structure
		142	; for XFS partition structure see XFS below
		143	struct xfs_sb
7736	dunkaist	144	sb_magicnum dd ? ; signature, must be XFS_SB_MAGIC
		145	sb_blocksize dd ? ; block is the minimal file system unit, in bytes
		146	sb_dblocks DQ ? ; number of data blocks
		147	sb_rblocks DQ ? ; number of realtime blocks
		148	sb_rextents DQ ? ; number of realtime extents
		149	sb_uuid rb 16 ; file system unique identifier
		150	sb_logstart DQ ? ; starting block of log (for internal journal)
		151	sb_rootino DQ ? ; root inode number
		152	sb_rbmino DQ ? ; bitmap inode for realtime extents
		153	sb_rsumino DQ ? ; summary inode for rt bitmap
		154	sb_rextsize dd ? ; realtime extent size, blocks
		155	sb_agblocks dd ? ; size of an allocation group (the last one may be smaller!)
		156	sb_agcount dd ? ; number of allocation groups
		157	sb_rbmblocks dd ? ; number of rt bitmap blocks
		158	sb_logblocks dd ? ; number of log blocks
		159	sb_versionnum dw ? ; header version
		160	sb_sectsize dw ? ; volume sector size in bytes
		161	sb_inodesize dw ? ; inode size, bytes
		162	sb_inopblock dw ? ; inodes per block
		163	sb_fname rb 12 ; inodes per block (aka label)
		164	sb_blocklog db ? ; log2 of sb_blocksize
		165	sb_sectlog db ? ; log2 of sb_blocksize
		166	sb_inodelog db ? ; log2 of sb_inodesize
		167	sb_inopblog db ? ; log2 of sb_inopblock
		168	sb_agblklog db ? ; log2 of sb_agblocks (rounded up!)
		169	sb_rextslog db ? ; log2 of sb_rextents
		170	sb_inprogress db ? ; mkfs is in progress, don't mount
		171	sb_imax_pct db ? ; max % of fs for inode space
3913	dunkaist	172	; statistics
7736	dunkaist	173	sb_icount DQ ? ; allocated inodes
		174	sb_ifree DQ ? ; free inodes
		175	sb_fdblocks DQ ? ; free data blocks
		176	sb_frextents DQ ? ; free realtime extents
3913	dunkaist	177
7736	dunkaist	178	sb_uquotino DQ ? ; user quota inode
		179	sb_gquotino DQ ? ; group quota inode
		180	sb_qflags dw ? ; quota flags
		181	sb_flags db ? ; misc. flags
		182	sb_shared_vn db ? ; shared version number
		183	sb_inoalignmt dd ? ; inode chunk alignment, fsblocks
		184	sb_unit dd ? ; stripe or raid unit
		185	sb_width dd ? ; stripe or raid width
		186	sb_dirblklog db ? ; log2 of dir block size (fsbs)
		187	sb_logsectlog db ? ; log2 of the log sector size
		188	sb_logsectsize dw ? ; sector size for the log, bytes
		189	sb_logsunit dd ? ; stripe unit size for the log
		190	sb_features2 dd ? ; additional feature bits
		191	sb_bad_features2 dd ?
		192	sb_features_compat dd ?
		193	sb_features_ro_compat dd ?
		194	sb_features_incompat dd ?
		195	sb_features_log_incompat dd ?
		196	sb_crc dd ? ; superblock crc
		197	sb_spino_align dd ? ; sparse inode chunk alignment
		198	sb_pquotino DQ ? ; project quota inode
		199	sb_lsn DQ ? ; last write sequence
		200	sb_meta_uuid rb 16 ; metadata file system unique id
3913	dunkaist	201	ends
		202
		203	; inode core structure: basic information about file
		204	struct xfs_dinode_core
7736	dunkaist	205	di_magic dw ? ; inode magic = XFS_DINODE_MAGIC
		206	di_mode dw ? ; mode and type of file
		207	di_version db ? ; inode version
		208	di_format db ? ; format of di_c data
		209	di_onlink dw ? ; old number of links to file
		210	di_uid dd ? ; owner's user id
		211	di_gid dd ? ; owner's group id
		212	di_nlink dd ? ; number of links to file
		213	di_projid dw ? ; owner's project id
		214	di_pad rb 8 ; unused, zeroed space
		215	di_flushiter dw ? ; incremented on flush
9888	dunkaist	216	di_atime DQ ; time last accessed
		217	di_mtime DQ ; time last modified
		218	di_ctime DQ ; time created/inode modified
7736	dunkaist	219	di_size DQ ? ; number of bytes in file
		220	di_nblocks DQ ? ; number of direct & btree blocks used
		221	di_extsize dd ? ; basic/minimum extent size for file
		222	di_nextents dd ? ; number of extents in data fork
		223	di_anextents dw ? ; number of extents in attribute fork
		224	di_forkoff db ? ; attr fork offs, <<3 for 64b align
		225	di_aformat db ? ; format of attr fork's data
		226	di_dmevmask dd ? ; DMIG event mask
		227	di_dmstate dw ? ; DMIG state info
		228	di_flags dw ? ; random flags, XFS_DIFLAG_...
		229	di_gen dd ? ; generation number
		230	di_next_unlinked dd ? ; unlinked but still used inode (if any, XFS_NULL otherwise)
3913	dunkaist	231	ends
		232
7736	dunkaist	233	struct xfs_dinode3_core xfs_dinode_core
		234	di_crc dd ? ; CRC of the inode
		235	di_changecount DQ ? ; number of attribute changes
		236	di_lsn DQ ? ; flush sequence
		237	di_flags2 DQ ? ; more random flags
		238	di_cowextsize dd ? ; basic cow extent size for file
		239	di_pad2 rb 12 ; more padding for future expansion
3913	dunkaist	240
7736	dunkaist	241	; fields only written to during inode creation
9888	dunkaist	242	di_crtime DQ ; time created
7736	dunkaist	243	di_ino DQ ? ; inode number
		244	di_uuid rb 16 ; UUID of the filesystem
		245	ends
		246
		247
3913	dunkaist	248	struct xfs_dir2_sf_hdr
7736	dunkaist	249	count db ?
		250	i8count db ?
		251	parent DQ ? ; parent inode number, 4 or 8 bytes
3913	dunkaist	252	ends
		253
		254	struct xfs_dir2_sf_entry
		255	namelen db ? ; actual name length (ASCII)
		256	offset rb 2 ; saved offset
		257	name db ? ; name, variable size
7736	dunkaist	258	inumber DQ ? ; 4 or 8 bytes
3913	dunkaist	259	ends
		260
7736	dunkaist	261	struct xfs_dir2_sf
		262	hdr xfs_dir2_sf_hdr
		263	entries xfs_dir2_sf_entry
		264	ends
3913	dunkaist	265
		266	; active entry in a data block
		267	; aligned to 8 bytes
		268	; tag appears as the last 2 bytes
		269	struct xfs_dir2_data_entry
7736	dunkaist	270	inumber DQ ?
		271	namelen db ?
		272	name db ? ; name bytes array without terminator
		273	; tag dw ? ; starting offset of the entry
3913	dunkaist	274	ends
		275
		276	; unused entry in a data block
		277	struct xfs_dir2_data_unused
7736	dunkaist	278	freetag dw ? ; XFS_DIR2_DATA_FREE_TAG aka XFS_NULL
3913	dunkaist	279	length dw ? ; total free length
7736	dunkaist	280	; tag dw ? ; starting offset of the entry
3913	dunkaist	281	ends
		282
		283	; generic data entry
		284	struct xfs_dir2_data_union
		285	union
		286	xentry xfs_dir2_data_entry
		287	unused xfs_dir2_data_unused
		288	ends
		289	ends
		290
		291	; describe a free area in the data block
		292	; the freespace will be formatted as a xfs_dir2_data_unused_t
		293	struct xfs_dir2_data_free
		294	offset dw ? ; start of freespace
		295	length dw ? ; length of freespace
		296	ends
		297
		298	; header for the data blocks
		299	; always at the beginning of a directory-sized block
		300	; the code knows that XFS_DIR2_DATA_FD_COUNT is 3
		301	struct xfs_dir2_data_hdr
7736	dunkaist	302	magic dd ? ; XFS_DIR2_DATA_MAGIC or XFS_DIR2_BLOCK_MAGIC
3913	dunkaist	303	bestfree xfs_dir2_data_free
		304	bestfree2 xfs_dir2_data_free
		305	bestfree3 xfs_dir2_data_free
		306	ends
		307
7736	dunkaist	308	struct xfs_dir3_data_hdr xfs_dir2_data_hdr
		309	magic3 dd ?
		310	crc dd ?
		311	blkno DQ ?
		312	lsn DQ ?
		313	uuid rb 16
		314	owner DQ ?
		315	ends
3913	dunkaist	316
		317	; leaf block entry
		318	struct xfs_dir2_leaf_entry
		319	hashval dd ? ; hash value of name
		320	address dd ? ; address of data entry
		321	ends
		322
		323	; the tail of directory block
		324	struct xfs_dir2_block_tail
		325	count dd ? ; count of leaf entries
		326	stale dd ? ; count of stale leaf entries
		327	ends
		328
		329	; generic single-block structure, for xfs_db
		330	struct xfs_dir2_block
7736	dunkaist	331	hdr xfs_dir2_data_hdr ; magic XFS_DIR2_DATA_MAGIC
3913	dunkaist	332	u xfs_dir2_data_union
		333	; leaf xfs_dir2_leaf_entry
		334	; tail xfs_dir2_block_tail
		335	ends
		336
		337	struct xfs_da_blkinfo
		338	forw dd ? ; previous block in list
		339	back dd ? ; following block in list
		340	magic dw ? ; validity check on block
		341	pad dw ? ; unused
		342	ends
		343
		344	struct xfs_dir2_leaf_hdr
7736	dunkaist	345	info xfs_da_blkinfo
		346	count dw ?
		347	stale dw ?
3913	dunkaist	348	ends
		349
7736	dunkaist	350	struct xfs_da3_blkinfo xfs_da_blkinfo
		351	crc dd ? ; CRC of block
		352	blkno DQ ? ; first block of the buffer
		353	lsn DQ ? ; sequence number of last write
		354	uuid rb 16 ; filesystem we belong to
		355	owner DQ ? ; inode that owns the block
		356	ends
3913	dunkaist	357
7736	dunkaist	358	struct xfs_dir3_leaf_hdr
		359	info xfs_da3_blkinfo
		360	count dw ?
		361	stale dw ?
		362	pad dd ?
3913	dunkaist	363	ends
		364
		365	; bests and tail are at the end of the block for single-leaf only
		366	; (magic = XFS_DIR2_LEAF1_MAGIC not XFS_DIR2_LEAFN_MAGIC)
		367	struct xfs_dir2_leaf
7736	dunkaist	368	hdr xfs_dir2_leaf_hdr
		369	ents xfs_dir2_leaf_entry
		370	; bests dw ?
		371	; tail xfs_dir2_leaf_tail
3913	dunkaist	372	ends
		373
7736	dunkaist	374	struct xfs_dir3_leaf
		375	hdr xfs_dir3_leaf_hdr
		376	ents xfs_dir2_leaf_entry
		377	; bests
		378	; tail
		379	ends
3913	dunkaist	380
		381	struct xfs_dir2_free_hdr
		382	magic dd ? ; XFS_DIR2_FREE_MAGIC
		383	firstdb dd ? ; db of first entry
		384	nvalid dd ? ; count of valid entries
		385	nused dd ? ; count of used entries
		386	ends
		387
		388	struct xfs_da_node_hdr
		389	info xfs_da_blkinfo
		390	count dw ?
		391	level dw ?
		392	ends
		393
		394	struct xfs_da_node_entry
		395	hashval dd ? ; hash value for this descendant
		396	before dd ? ; Btree block before this key
		397	ends
		398
		399	struct xfs_da_intnode
		400	hdr xfs_da_node_hdr
		401	btree xfs_da_node_entry
		402	ends
		403
7736	dunkaist	404	struct xfs_da3_node_hdr
		405	info xfs_da3_blkinfo
		406	count dw ?
		407	level dw ?
		408	pad dd ?
		409	ends
3913	dunkaist	410
7736	dunkaist	411	struct xfs_da3_intnode
		412	hdr xfs_da3_node_hdr
		413	btree xfs_da_node_entry
		414	ends
		415
3913	dunkaist	416	; packet extent
		417	struct xfs_bmbt_rec
7736	dunkaist	418	l0 DQ ?
		419	l1 DQ ?
3913	dunkaist	420	ends
		421
		422	; unpacked extent
		423	struct xfs_bmbt_irec
7736	dunkaist	424	br_startoff DQ ?
		425	br_startblock DQ ?
		426	br_blockcount dd ?
		427	br_state dd ?
3913	dunkaist	428	ends
		429
7736	dunkaist	430	struct xfs_dir2_bmx
		431	bmx xfs_bmbt_rec
		432	ends
3913	dunkaist	433
7736	dunkaist	434	; bmap root header
3913	dunkaist	435	struct xfs_bmdr_block
		436	bb_level dw ? ; 0 is a leaf
		437	bb_numrecs dw ? ; current number of data records
		438	ends
		439
		440	; key structure for non-leaf levels of the tree
		441	struct xfs_bmbt_key
7736	dunkaist	442	br_startoff DQ ? ; starting file offset
3913	dunkaist	443	ends
		444
7736	dunkaist	445	struct xfs_bmdr_ptr DQ
		446	ends
3913	dunkaist	447
7736	dunkaist	448	struct xfs_bmbt_ptr DQ
		449	ends
3913	dunkaist	450
		451	; long form header: bmap btrees
		452	; xfs_btree_lblock is xfs_bmbt_block (xfs_btree.h)
		453	struct xfs_bmbt_block
		454	bb_magic dd ? ; magic number for block type
		455	bb_level dw ? ; 0 is a leaf
		456	bb_numrecs dw ? ; current number of data records
7736	dunkaist	457	bb_leftsib DQ ? ; left sibling block or NULLDFSBNO
		458	bb_rightsib DQ ? ; right sibling block or NULLDFSBNO
3913	dunkaist	459	ends
		460
7736	dunkaist	461	struct xfs_bmbt3_block xfs_bmbt_block
		462	bb_blkno DQ ?
		463	bb_lsn DQ ?
		464	bb_uuid rb 16
		465	bb_owner DQ ?
		466	bb_crc dd ?
		467	bb_pad dd ?
		468	ends
3913	dunkaist	469
		470	struct xfs_inode
		471	di_core xfs_dinode_core ; main info, aka core
7736	dunkaist	472	union
		473	di_u db ? ; data fork inode part
		474	dir2_sf xfs_dir2_sf
		475	bmx xfs_dir2_bmx
		476	ends
3913	dunkaist	477	; di_a db ? ; data attribute
		478	ends
		479
7736	dunkaist	480	struct xfs_agf
		481	agf_magicnum dd ? ; magic number == XFS_AGF_MAGIC
		482	agf_versionnum dd ? ; header version == XFS_AGF_VERSION
		483	agf_seqno dd ? ; sequence # starting from 0
		484	agf_length dd ? ; size in blocks of AG
		485	agf_roots dd ?
		486	agf_levels dd ?
		487	agf_flfirst dd ?
		488	agf_fllast dd ?
		489	agf_flcount dd ?
		490	agf_freeblks dd ? ; free blocks in AG
		491	ends
3913	dunkaist	492
		493	; internal data for every XFS partition
		494	; this _is_ XFS partition structure
7736	dunkaist	495	; most fields are unpacked or bswap'ed values of the superblock, see xfs_sb structure above
3913	dunkaist	496	struct XFS PARTITION
		497	Lock MUTEX ? ; access mutex
7736	dunkaist	498	sectsize dd ?
3913	dunkaist	499	blocksize dd ?
		500	dirblocksize dd ?
7736	dunkaist	501	inodesize dd ?
		502	rootino DQ ?
3913	dunkaist	503	versionnum dd ?
7736	dunkaist	504	version dd ?
3913	dunkaist	505	features2 dd ?
		506	inopblock dd ?
7736	dunkaist	507	blkpdirblk dd ?
3913	dunkaist	508	blocklog dd ?
		509	sectlog dd ?
		510	inodelog dd ?
		511	inopblog dd ?
		512	agblklog dd ?
7736	dunkaist	513	sectpblog dd ?
		514	dirblklog dd ? ; in fsblocks
3913	dunkaist	515	sectpblock dd ?
		516	agblocks dd ?
7736	dunkaist	517	dir2_leaf_offset_blocks DQ ?
		518	dir2_free_offset_blocks DQ ?
		519	agblockmask DQ ?
		520	inode_core_size dd ?
		521	features_incompat dd ?
		522	ftype_size dd ?
		523	dir_block_magic dd ?
		524	dir_data_magic dd ?
		525	dir_leaf1_magic dw ?
		526	dir_leafn_magic dw ?
		527	da_node_magic dw ?
		528	bmap_magic dd ?
		529	bmbt_block_size dd ?
		530	dir_block_size dd ?
		531	dir_data_size dd ?
		532	dir_leaf1_size dd ?
		533	dir_leafn_size dd ?
		534	da_node_size dd ?
		535	da_blkinfo_size dd ?
9888	dunkaist	536	conv_time_to_kos_epoch dd ?
3913	dunkaist	537	; helpers, temporary vars, etc
7736	dunkaist	538	; should go to file descriptor and local vars?
		539	cur_block dd ?
		540	cur_block_data dd ?
		541	cur_inode dd ?
		542	cur_sect dd ?
		543	cur_dirblock dd ?
		544	tmp_inode dd ?
3913	dunkaist	545	extent xfs_bmbt_irec
		546	bytes_to_read dd ?
		547	bytes_read dd ?
7736	dunkaist	548	bytes_left_in_file DQ ?
		549	file_offset DQ ?
		550	file_buffer dd ?
3913	dunkaist	551	entries_read dd ?
7736	dunkaist	552	requested_cnt dd ?
		553	dir_sf_self_done dd ?
		554	dir_sf_parent_done dd ?
		555	entries_left_in_dir dd ?
		556	entries_to_skip dd ?
3913	dunkaist	557	max_dirblockaddr dd ?
		558	cur_inode_save dd ?
7736	dunkaist	559	shortform_inodelen dd ?
		560	bdfe_nameenc dd ?
		561	bdfe_len dd ?
		562	bdfe_process dd ?
		563	inode_self DQ ?
		564	bdfe_buf dd ?
3913	dunkaist	565	eof dd ?
7736	dunkaist	566	offset_begin DQ ?
		567	offset_end DQ ?
3913	dunkaist	568	ends
7736	dunkaist	569
		570	struct f70s0arg
		571	sf dd ?
		572	offset DQ ?
		573	count dd ?
		574	buf dd ?
		575	zero db ?
		576	path dd ?
		577	ends
		578
		579	struct f70s1arg
		580	sf dd ?
		581	start_idx dd ?
		582	encoding dd ?
		583	count dd ?
		584	buf dd ?
		585	zero db ?
		586	path dd ?
		587	ends
		588
		589	struct f70s5arg
		590	sf dd ?
		591	dd ?
		592	xflags dd ? ; name flags is already used
		593	dd ?
		594	buf dd ?
		595	zero db ?
		596	path dd ?
		597	ends
		598
		599	struct bdfe_hdr
		600	version dd ?
		601	read_cnt dd ?
		602	total_cnt dd ?
		603	zeroed rd 5
		604	ends
		605
		606	struct bdfe
		607	attr dd ?
		608	nameenc dd ?
		609	ctime dd ?
		610	cdate dd ?
		611	atime dd ?
		612	adate dd ?
		613	mtime dd ?
		614	mdate dd ?
		615	size DQ ?
		616	name db ?
		617	ends

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(root)/kernel/trunk/fs/xfs.inc @ 9889 – Rev 9888