| 1 | /* xfs.h - an extraction from xfsprogs-1.3.5/include/xfs* into one file */
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| 2 | /*
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| 3 | * GRUB -- GRand Unified Bootloader
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| 4 | * Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved.
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| 5 | * Copyright (C) 2001 Free Software Foundation, Inc.
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| 6 | *
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| 7 | * This program is free software; you can redistribute it and/or modify it
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| 8 | * under the terms of version 2 of the GNU General Public License as
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| 9 | * published by the Free Software Foundation.
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| 10 | *
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| 11 | * This program is distributed in the hope that it would be useful, but
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| 12 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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| 14 | *
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| 15 | * Further, this software is distributed without any warranty that it is
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| 16 | * free of the rightful claim of any third person regarding infringement
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| 17 | * or the like. Any license provided herein, whether implied or
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| 18 | * otherwise, applies only to this software file. Patent licenses, if
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| 19 | * any, provided herein do not apply to combinations of this program with
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| 20 | * other software, or any other product whatsoever.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License along
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| 23 | * with this program; if not, write the Free Software Foundation, Inc., 59
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| 24 | * Temple Place - Suite 330, Boston MA 02111-1307, USA.
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| 25 | *
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| 26 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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| 27 | * Mountain View, CA 94043, or:
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| 28 | *
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| 29 | * http://www.sgi.com
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| 30 | *
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| 31 | * For further information regarding this notice, see:
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| 32 | *
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| 33 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
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| 34 | */
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| 35 |
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| 36 | #ifndef _BITS_TYPES_H
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| 37 | typedef signed char __int8_t;
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| 38 | typedef unsigned char __uint8_t;
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| 39 | typedef short __int16_t;
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| 40 | typedef unsigned short __uint16_t;
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| 41 | typedef int __int32_t;
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| 42 | typedef unsigned int __uint32_t;
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| 43 | typedef long long __int64_t;
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| 44 | typedef unsigned long long __uint64_t;
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| 45 | #endif
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| 46 |
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| 47 | typedef __uint64_t xfs_ino_t;
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| 48 | typedef __uint32_t xfs_agino_t;
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| 49 | typedef __int64_t xfs_daddr_t;
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| 50 | typedef __int64_t xfs_off_t;
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| 51 | typedef __uint8_t uuid_t[16];
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| 52 |
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| 53 |
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| 54 | /* those are from xfs_types.h */
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| 55 |
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| 56 | typedef __uint32_t xfs_agblock_t; /* blockno in alloc. group */
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| 57 | typedef __uint32_t xfs_extlen_t; /* extent length in blocks */
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| 58 | typedef __uint32_t xfs_agnumber_t; /* allocation group number */
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| 59 | typedef __int32_t xfs_extnum_t; /* # of extents in a file */
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| 60 | typedef __int16_t xfs_aextnum_t; /* # extents in an attribute fork */
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| 61 | typedef __int64_t xfs_fsize_t; /* bytes in a file */
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| 62 |
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| 63 | typedef __uint32_t xfs_dablk_t; /* dir/attr block number (in file) */
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| 64 | typedef __uint32_t xfs_dahash_t; /* dir/attr hash value */
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| 65 |
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| 66 | /*
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| 67 | * Disk based types:
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| 68 | */
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| 69 | typedef __uint64_t xfs_dfsbno_t; /* blockno in filesystem (agno|agbno) */
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| 70 | typedef __uint64_t xfs_drfsbno_t; /* blockno in filesystem (raw) */
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| 71 | typedef __uint64_t xfs_drtbno_t; /* extent (block) in realtime area */
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| 72 | typedef __uint64_t xfs_dfiloff_t; /* block number in a file */
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| 73 |
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| 74 | typedef __uint64_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */
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| 75 | typedef __uint64_t xfs_fileoff_t; /* block number in a file */
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| 76 | typedef __uint64_t xfs_filblks_t; /* number of blocks in a file */
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| 77 |
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| 78 |
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| 79 | /* those are from xfs_sb.h */
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| 80 |
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| 81 | #define XFS_SB_MAGIC 0x58465342 /* 'XFSB'*/
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| 82 | #define XFS_SB_VERSION_4 4 /* 6.2+ - bitmask version */
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| 83 | #define XFS_SB_VERSION_NUMBITS 0x000f
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| 84 |
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| 85 | typedef struct xfs_sb
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| 86 | {
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| 87 | __uint32_t sb_magicnum; /* magic number == XFS_SB_MAGIC */
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| 88 | __uint32_t sb_blocksize; /* logical block size, bytes */
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| 89 | xfs_drfsbno_t sb_dblocks; /* number of data blocks */
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| 90 | xfs_drfsbno_t sb_rblocks; /* number of realtime blocks */
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| 91 | xfs_drtbno_t sb_rextents; /* number of realtime extents */
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| 92 | uuid_t sb_uuid; /* file system unique id */
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| 93 | xfs_dfsbno_t sb_logstart; /* starting block of log if internal */
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| 94 | xfs_ino_t sb_rootino; /* root inode number */
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| 95 | xfs_ino_t sb_rbmino; /* bitmap inode for realtime extents */
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| 96 | xfs_ino_t sb_rsumino; /* summary inode for rt bitmap */
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| 97 | xfs_agblock_t sb_rextsize; /* realtime extent size, blocks */
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| 98 | xfs_agblock_t sb_agblocks; /* size of an allocation group */
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| 99 | xfs_agnumber_t sb_agcount; /* number of allocation groups */
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| 100 | xfs_extlen_t sb_rbmblocks; /* number of rt bitmap blocks */
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| 101 | xfs_extlen_t sb_logblocks; /* number of log blocks */
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| 102 | __uint16_t sb_versionnum; /* header version == XFS_SB_VERSION */
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| 103 | __uint16_t sb_sectsize; /* volume sector size, bytes */
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| 104 | __uint16_t sb_inodesize; /* inode size, bytes */
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| 105 | __uint16_t sb_inopblock; /* inodes per block */
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| 106 | char sb_fname[12]; /* file system name */
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| 107 | __uint8_t sb_blocklog; /* log2 of sb_blocksize */
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| 108 | __uint8_t sb_sectlog; /* log2 of sb_sectsize */
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| 109 | __uint8_t sb_inodelog; /* log2 of sb_inodesize */
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| 110 | __uint8_t sb_inopblog; /* log2 of sb_inopblock */
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| 111 | __uint8_t sb_agblklog; /* log2 of sb_agblocks (rounded up) */
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| 112 | __uint8_t sb_rextslog; /* log2 of sb_rextents */
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| 113 | __uint8_t sb_inprogress; /* mkfs is in progress, don't mount */
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| 114 | __uint8_t sb_imax_pct; /* max % of fs for inode space */
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| 115 | /* statistics */
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| 116 | /*
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| 117 | * These fields must remain contiguous. If you really
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| 118 | * want to change their layout, make sure you fix the
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| 119 | * code in xfs_trans_apply_sb_deltas().
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| 120 | */
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| 121 | __uint64_t sb_icount; /* allocated inodes */
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| 122 | __uint64_t sb_ifree; /* free inodes */
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| 123 | __uint64_t sb_fdblocks; /* free data blocks */
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| 124 | __uint64_t sb_frextents; /* free realtime extents */
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| 125 | /*
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| 126 | * End contiguous fields.
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| 127 | */
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| 128 | xfs_ino_t sb_uquotino; /* user quota inode */
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| 129 | xfs_ino_t sb_gquotino; /* group quota inode */
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| 130 | __uint16_t sb_qflags; /* quota flags */
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| 131 | __uint8_t sb_flags; /* misc. flags */
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| 132 | __uint8_t sb_shared_vn; /* shared version number */
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| 133 | xfs_extlen_t sb_inoalignmt; /* inode chunk alignment, fsblocks */
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| 134 | __uint32_t sb_unit; /* stripe or raid unit */
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| 135 | __uint32_t sb_width; /* stripe or raid width */
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| 136 | __uint8_t sb_dirblklog; /* log2 of dir block size (fsbs) */
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| 137 | __uint8_t sb_dummy[7]; /* padding */
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| 138 | } xfs_sb_t;
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| 139 |
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| 140 |
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| 141 | /* those are from xfs_btree.h */
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| 142 |
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| 143 | /*
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| 144 | * Long form header: bmap btrees.
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| 145 | */
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| 146 | typedef struct xfs_btree_lblock
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| 147 | {
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| 148 | __uint32_t bb_magic; /* magic number for block type */
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| 149 | __uint16_t bb_level; /* 0 is a leaf */
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| 150 | __uint16_t bb_numrecs; /* current # of data records */
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| 151 | xfs_dfsbno_t bb_leftsib; /* left sibling block or NULLDFSBNO */
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| 152 | xfs_dfsbno_t bb_rightsib; /* right sibling block or NULLDFSBNO */
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| 153 | } xfs_btree_lblock_t;
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| 154 |
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| 155 | /*
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| 156 | * Combined header and structure, used by common code.
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| 157 | */
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| 158 | typedef struct xfs_btree_hdr
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| 159 | {
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| 160 | __uint32_t bb_magic; /* magic number for block type */
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| 161 | __uint16_t bb_level; /* 0 is a leaf */
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| 162 | __uint16_t bb_numrecs; /* current # of data records */
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| 163 | } xfs_btree_hdr_t;
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| 164 |
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| 165 | typedef struct xfs_btree_block
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| 166 | {
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| 167 | xfs_btree_hdr_t bb_h; /* header */
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| 168 | union {
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| 169 | struct {
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| 170 | xfs_agblock_t bb_leftsib;
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| 171 | xfs_agblock_t bb_rightsib;
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| 172 | } s; /* short form pointers */
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| 173 | struct {
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| 174 | xfs_dfsbno_t bb_leftsib;
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| 175 | xfs_dfsbno_t bb_rightsib;
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| 176 | } l; /* long form pointers */
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| 177 | } bb_u; /* rest */
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| 178 | } xfs_btree_block_t;
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| 179 |
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| 180 | /* those are from xfs_bmap_btree.h */
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| 181 |
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| 182 | /*
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| 183 | * Bmap root header, on-disk form only.
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| 184 | */
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| 185 | typedef struct xfs_bmdr_block
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| 186 | {
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| 187 | __uint16_t bb_level; /* 0 is a leaf */
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| 188 | __uint16_t bb_numrecs; /* current # of data records */
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| 189 | } xfs_bmdr_block_t;
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| 190 |
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| 191 | /*
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| 192 | * Bmap btree record and extent descriptor.
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| 193 | * For 32-bit kernels,
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| 194 | * l0:31 is an extent flag (value 1 indicates non-normal).
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| 195 | * l0:0-30 and l1:9-31 are startoff.
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| 196 | * l1:0-8, l2:0-31, and l3:21-31 are startblock.
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| 197 | * l3:0-20 are blockcount.
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| 198 | * For 64-bit kernels,
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| 199 | * l0:63 is an extent flag (value 1 indicates non-normal).
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| 200 | * l0:9-62 are startoff.
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| 201 | * l0:0-8 and l1:21-63 are startblock.
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| 202 | * l1:0-20 are blockcount.
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| 203 | */
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| 204 |
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| 205 | #define BMBT_USE_64 1
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| 206 |
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| 207 | typedef struct xfs_bmbt_rec_32
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| 208 | {
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| 209 | __uint32_t l0, l1, l2, l3;
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| 210 | } xfs_bmbt_rec_32_t;
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| 211 | typedef struct xfs_bmbt_rec_64
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| 212 | {
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| 213 | __uint64_t l0, l1;
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| 214 | } xfs_bmbt_rec_64_t;
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| 215 |
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| 216 | #if BMBT_USE_64
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| 217 | typedef __uint64_t xfs_bmbt_rec_base_t; /* use this for casts */
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| 218 | typedef xfs_bmbt_rec_64_t xfs_bmbt_rec_t, xfs_bmdr_rec_t;
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| 219 | #else /* !BMBT_USE_64 */
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| 220 | typedef __uint32_t xfs_bmbt_rec_base_t; /* use this for casts */
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| 221 | typedef xfs_bmbt_rec_32_t xfs_bmbt_rec_t, xfs_bmdr_rec_t;
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| 222 | #endif /* BMBT_USE_64 */
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| 223 |
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| 224 | /*
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| 225 | * Key structure for non-leaf levels of the tree.
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| 226 | */
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| 227 | typedef struct xfs_bmbt_key
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| 228 | {
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| 229 | xfs_dfiloff_t br_startoff; /* starting file offset */
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| 230 | } xfs_bmbt_key_t, xfs_bmdr_key_t;
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| 231 |
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| 232 | typedef xfs_dfsbno_t xfs_bmbt_ptr_t, xfs_bmdr_ptr_t; /* btree pointer type */
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| 233 | /* btree block header type */
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| 234 | typedef struct xfs_btree_lblock xfs_bmbt_block_t;
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| 235 |
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| 236 |
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| 237 | /* those are from xfs_dir2.h */
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| 238 | /*
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| 239 | * Directory version 2.
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| 240 | * There are 4 possible formats:
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| 241 | * shortform
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| 242 | * single block - data with embedded leaf at the end
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| 243 | * multiple data blocks, single leaf+freeindex block
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| 244 | * data blocks, node&leaf blocks (btree), freeindex blocks
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| 245 | *
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| 246 | * The shortform format is in xfs_dir2_sf.h.
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| 247 | * The single block format is in xfs_dir2_block.h.
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| 248 | * The data block format is in xfs_dir2_data.h.
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| 249 | * The leaf and freeindex block formats are in xfs_dir2_leaf.h.
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| 250 | * Node blocks are the same as the other version, in xfs_da_btree.h.
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| 251 | */
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| 252 |
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| 253 | /*
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| 254 | * Byte offset in data block and shortform entry.
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| 255 | */
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| 256 | typedef __uint16_t xfs_dir2_data_off_t;
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| 257 |
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| 258 | /*
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| 259 | * Byte offset in a directory.
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| 260 | */
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| 261 | typedef xfs_off_t xfs_dir2_off_t;
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| 262 |
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| 263 | /* those are from xfs_da_btree.h */
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| 264 | /*========================================================================
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| 265 | * Directory Structure when greater than XFS_LBSIZE(mp) bytes.
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| 266 | *========================================================================*/
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| 267 |
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| 268 | /*
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| 269 | * This structure is common to both leaf nodes and non-leaf nodes in the Btree.
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| 270 | *
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| 271 | * Is is used to manage a doubly linked list of all blocks at the same
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| 272 | * level in the Btree, and to identify which type of block this is.
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| 273 | */
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| 274 | #define XFS_DIR2_LEAF1_MAGIC 0xd2f1 /* magic number: v2 dirlf single blks */
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| 275 | #define XFS_DIR2_LEAFN_MAGIC 0xd2ff /* magic number: v2 dirlf multi blks */
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| 276 |
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| 277 | typedef struct xfs_da_blkinfo {
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| 278 | xfs_dablk_t forw; /* previous block in list */
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| 279 | xfs_dablk_t back; /* following block in list */
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| 280 | __uint16_t magic; /* validity check on block */
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| 281 | __uint16_t pad; /* unused */
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| 282 | } xfs_da_blkinfo_t;
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| 283 |
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| 284 | /*
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| 285 | * This is the structure of the root and intermediate nodes in the Btree.
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| 286 | * The leaf nodes are defined above.
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| 287 | *
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| 288 | * Entries are not packed.
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| 289 | *
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| 290 | * Since we have duplicate keys, use a binary search but always follow
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| 291 | * all match in the block, not just the first match found.
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| 292 | */
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| 293 |
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| 294 | typedef struct xfs_da_intnode {
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| 295 | struct xfs_da_node_hdr { /* constant-structure header block */
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| 296 | xfs_da_blkinfo_t info; /* block type, links, etc. */
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| 297 | __uint16_t count; /* count of active entries */
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| 298 | __uint16_t level; /* level above leaves (leaf == 0) */
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| 299 | } hdr;
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| 300 | struct xfs_da_node_entry {
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| 301 | xfs_dahash_t hashval; /* hash value for this descendant */
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| 302 | xfs_dablk_t before; /* Btree block before this key */
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| 303 | } btree[1]; /* variable sized array of keys */
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| 304 | } xfs_da_intnode_t;
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| 305 |
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| 306 |
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| 307 | /* those are from xfs_dir2_data.h */
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| 308 | /*
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| 309 | * Directory format 2, data block structures.
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| 310 | */
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| 311 |
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| 312 | /*
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| 313 | * Constants.
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| 314 | */
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| 315 | #define XFS_DIR2_DATA_FREE_TAG 0xffff
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| 316 | #define XFS_DIR2_DATA_FD_COUNT 3
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| 317 |
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| 318 | /*
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| 319 | * Structures.
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| 320 | */
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| 321 |
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| 322 | /*
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| 323 | * Describe a free area in the data block.
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| 324 | * The freespace will be formatted as a xfs_dir2_data_unused_t.
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| 325 | */
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| 326 | typedef struct xfs_dir2_data_free {
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| 327 | xfs_dir2_data_off_t offset; /* start of freespace */
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| 328 | xfs_dir2_data_off_t length; /* length of freespace */
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| 329 | } xfs_dir2_data_free_t;
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| 330 |
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| 331 | /*
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| 332 | * Header for the data blocks.
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| 333 | * Always at the beginning of a directory-sized block.
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| 334 | * The code knows that XFS_DIR2_DATA_FD_COUNT is 3.
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| 335 | */
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| 336 | typedef struct xfs_dir2_data_hdr {
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| 337 | __uint32_t magic; /* XFS_DIR2_DATA_MAGIC */
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| 338 | /* or XFS_DIR2_BLOCK_MAGIC */
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| 339 | xfs_dir2_data_free_t bestfree[XFS_DIR2_DATA_FD_COUNT];
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| 340 | } xfs_dir2_data_hdr_t;
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| 341 |
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| 342 | /*
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| 343 | * Active entry in a data block. Aligned to 8 bytes.
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| 344 | * Tag appears as the last 2 bytes.
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| 345 | */
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| 346 | typedef struct xfs_dir2_data_entry {
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| 347 | xfs_ino_t inumber; /* inode number */
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| 348 | __uint8_t namelen; /* name length */
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| 349 | __uint8_t name[1]; /* name bytes, no null */
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| 350 | /* variable offset */
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| 351 | xfs_dir2_data_off_t tag; /* starting offset of us */
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| 352 | } xfs_dir2_data_entry_t;
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| 353 |
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| 354 | /*
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| 355 | * Unused entry in a data block. Aligned to 8 bytes.
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| 356 | * Tag appears as the last 2 bytes.
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| 357 | */
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| 358 | typedef struct xfs_dir2_data_unused {
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| 359 | __uint16_t freetag; /* XFS_DIR2_DATA_FREE_TAG */
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| 360 | xfs_dir2_data_off_t length; /* total free length */
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| 361 | /* variable offset */
|
|---|
| 362 | xfs_dir2_data_off_t tag; /* starting offset of us */
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| 363 | } xfs_dir2_data_unused_t;
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| 364 |
|
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| 365 | typedef union {
|
|---|
| 366 | xfs_dir2_data_entry_t entry;
|
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| 367 | xfs_dir2_data_unused_t unused;
|
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| 368 | } xfs_dir2_data_union_t;
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|---|
| 369 |
|
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| 370 |
|
|---|
| 371 | /* those are from xfs_dir2_leaf.h */
|
|---|
| 372 | /*
|
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| 373 | * Directory version 2, leaf block structures.
|
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| 374 | */
|
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| 375 |
|
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| 376 | /*
|
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| 377 | * Leaf block header.
|
|---|
| 378 | */
|
|---|
| 379 | typedef struct xfs_dir2_leaf_hdr {
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| 380 | xfs_da_blkinfo_t info; /* header for da routines */
|
|---|
| 381 | __uint16_t count; /* count of entries */
|
|---|
| 382 | __uint16_t stale; /* count of stale entries */
|
|---|
| 383 | } xfs_dir2_leaf_hdr_t;
|
|---|
| 384 |
|
|---|
| 385 |
|
|---|
| 386 | /* those are from xfs_dir2_block.h */
|
|---|
| 387 | /*
|
|---|
| 388 | * xfs_dir2_block.h
|
|---|
| 389 | * Directory version 2, single block format structures
|
|---|
| 390 | */
|
|---|
| 391 |
|
|---|
| 392 | /*
|
|---|
| 393 | * The single block format is as follows:
|
|---|
| 394 | * xfs_dir2_data_hdr_t structure
|
|---|
| 395 | * xfs_dir2_data_entry_t and xfs_dir2_data_unused_t structures
|
|---|
| 396 | * xfs_dir2_leaf_entry_t structures
|
|---|
| 397 | * xfs_dir2_block_tail_t structure
|
|---|
| 398 | */
|
|---|
| 399 |
|
|---|
| 400 | #define XFS_DIR2_BLOCK_MAGIC 0x58443242 /* XD2B: for one block dirs */
|
|---|
| 401 |
|
|---|
| 402 | typedef struct xfs_dir2_block_tail {
|
|---|
| 403 | __uint32_t count; /* count of leaf entries */
|
|---|
| 404 | __uint32_t stale; /* count of stale lf entries */
|
|---|
| 405 | } xfs_dir2_block_tail_t;
|
|---|
| 406 |
|
|---|
| 407 |
|
|---|
| 408 | /* those are from xfs_dir2_sf.h */
|
|---|
| 409 |
|
|---|
| 410 | /*
|
|---|
| 411 | * Directory layout when stored internal to an inode.
|
|---|
| 412 | *
|
|---|
| 413 | * Small directories are packed as tightly as possible so as to
|
|---|
| 414 | * fit into the literal area of the inode.
|
|---|
| 415 | */
|
|---|
| 416 |
|
|---|
| 417 | /*
|
|---|
| 418 | * Inode number stored as 8 8-bit values.
|
|---|
| 419 | */
|
|---|
| 420 | typedef struct { __uint8_t i[8]; } xfs_dir2_ino8_t;
|
|---|
| 421 |
|
|---|
| 422 | /*
|
|---|
| 423 | * Inode number stored as 4 8-bit values.
|
|---|
| 424 | * Works a lot of the time, when all the inode numbers in a directory
|
|---|
| 425 | * fit in 32 bits.
|
|---|
| 426 | */
|
|---|
| 427 | typedef struct { __uint8_t i[4]; } xfs_dir2_ino4_t;
|
|---|
| 428 |
|
|---|
| 429 | typedef union {
|
|---|
| 430 | xfs_dir2_ino8_t i8;
|
|---|
| 431 | xfs_dir2_ino4_t i4;
|
|---|
| 432 | } xfs_dir2_inou_t;
|
|---|
| 433 |
|
|---|
| 434 | /*
|
|---|
| 435 | * Normalized offset (in a data block) of the entry, really xfs_dir2_data_off_t.
|
|---|
| 436 | * Only need 16 bits, this is the byte offset into the single block form.
|
|---|
| 437 | */
|
|---|
| 438 | typedef struct { __uint8_t i[2]; } xfs_dir2_sf_off_t;
|
|---|
| 439 |
|
|---|
| 440 | /*
|
|---|
| 441 | * The parent directory has a dedicated field, and the self-pointer must
|
|---|
| 442 | * be calculated on the fly.
|
|---|
| 443 | *
|
|---|
| 444 | * Entries are packed toward the top as tightly as possible. The header
|
|---|
| 445 | * and the elements must be bcopy()'d out into a work area to get correct
|
|---|
| 446 | * alignment for the inode number fields.
|
|---|
| 447 | */
|
|---|
| 448 | typedef struct xfs_dir2_sf_hdr {
|
|---|
| 449 | __uint8_t count; /* count of entries */
|
|---|
| 450 | __uint8_t i8count; /* count of 8-byte inode #s */
|
|---|
| 451 | xfs_dir2_inou_t parent; /* parent dir inode number */
|
|---|
| 452 | } xfs_dir2_sf_hdr_t;
|
|---|
| 453 |
|
|---|
| 454 | typedef struct xfs_dir2_sf_entry {
|
|---|
| 455 | __uint8_t namelen; /* actual name length */
|
|---|
| 456 | xfs_dir2_sf_off_t offset; /* saved offset */
|
|---|
| 457 | __uint8_t name[1]; /* name, variable size */
|
|---|
| 458 | xfs_dir2_inou_t inumber; /* inode number, var. offset */
|
|---|
| 459 | } xfs_dir2_sf_entry_t;
|
|---|
| 460 |
|
|---|
| 461 | typedef struct xfs_dir2_sf {
|
|---|
| 462 | xfs_dir2_sf_hdr_t hdr; /* shortform header */
|
|---|
| 463 | xfs_dir2_sf_entry_t list[1]; /* shortform entries */
|
|---|
| 464 | } xfs_dir2_sf_t;
|
|---|
| 465 |
|
|---|
| 466 | /* those are from xfs_dinode.h */
|
|---|
| 467 |
|
|---|
| 468 | #define XFS_DINODE_VERSION_1 1
|
|---|
| 469 | #define XFS_DINODE_VERSION_2 2
|
|---|
| 470 | #define XFS_DINODE_MAGIC 0x494e /* 'IN' */
|
|---|
| 471 |
|
|---|
| 472 | /*
|
|---|
| 473 | * Disk inode structure.
|
|---|
| 474 | * This is just the header; the inode is expanded to fill a variable size
|
|---|
| 475 | * with the last field expanding. It is split into the core and "other"
|
|---|
| 476 | * because we only need the core part in the in-core inode.
|
|---|
| 477 | */
|
|---|
| 478 | typedef struct xfs_timestamp {
|
|---|
| 479 | __int32_t t_sec; /* timestamp seconds */
|
|---|
| 480 | __int32_t t_nsec; /* timestamp nanoseconds */
|
|---|
| 481 | } xfs_timestamp_t;
|
|---|
| 482 |
|
|---|
| 483 | /*
|
|---|
| 484 | * Note: Coordinate changes to this structure with the XFS_DI_* #defines
|
|---|
| 485 | * below and the offsets table in xfs_ialloc_log_di().
|
|---|
| 486 | */
|
|---|
| 487 | typedef struct xfs_dinode_core
|
|---|
| 488 | {
|
|---|
| 489 | __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */
|
|---|
| 490 | __uint16_t di_mode; /* mode and type of file */
|
|---|
| 491 | __int8_t di_version; /* inode version */
|
|---|
| 492 | __int8_t di_format; /* format of di_c data */
|
|---|
| 493 | __uint16_t di_onlink; /* old number of links to file */
|
|---|
| 494 | __uint32_t di_uid; /* owner's user id */
|
|---|
| 495 | __uint32_t di_gid; /* owner's group id */
|
|---|
| 496 | __uint32_t di_nlink; /* number of links to file */
|
|---|
| 497 | __uint16_t di_projid; /* owner's project id */
|
|---|
| 498 | __uint8_t di_pad[10]; /* unused, zeroed space */
|
|---|
| 499 | xfs_timestamp_t di_atime; /* time last accessed */
|
|---|
| 500 | xfs_timestamp_t di_mtime; /* time last modified */
|
|---|
| 501 | xfs_timestamp_t di_ctime; /* time created/inode modified */
|
|---|
| 502 | xfs_fsize_t di_size; /* number of bytes in file */
|
|---|
| 503 | xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */
|
|---|
| 504 | xfs_extlen_t di_extsize; /* basic/minimum extent size for file */
|
|---|
| 505 | xfs_extnum_t di_nextents; /* number of extents in data fork */
|
|---|
| 506 | xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/
|
|---|
| 507 | __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */
|
|---|
| 508 | __int8_t di_aformat; /* format of attr fork's data */
|
|---|
| 509 | __uint32_t di_dmevmask; /* DMIG event mask */
|
|---|
| 510 | __uint16_t di_dmstate; /* DMIG state info */
|
|---|
| 511 | __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */
|
|---|
| 512 | __uint32_t di_gen; /* generation number */
|
|---|
| 513 | } xfs_dinode_core_t;
|
|---|
| 514 |
|
|---|
| 515 | typedef struct xfs_dinode
|
|---|
| 516 | {
|
|---|
| 517 | xfs_dinode_core_t di_core;
|
|---|
| 518 | xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */
|
|---|
| 519 | union {
|
|---|
| 520 | xfs_bmdr_block_t di_bmbt; /* btree root block */
|
|---|
| 521 | xfs_bmbt_rec_32_t di_bmx[1]; /* extent list */
|
|---|
| 522 | xfs_dir2_sf_t di_dir2sf; /* shortform directory v2 */
|
|---|
| 523 | char di_c[1]; /* local contents */
|
|---|
| 524 | } di_u;
|
|---|
| 525 | } xfs_dinode_t;
|
|---|
| 526 |
|
|---|
| 527 | /*
|
|---|
| 528 | * Values for di_format
|
|---|
| 529 | */
|
|---|
| 530 | typedef enum xfs_dinode_fmt
|
|---|
| 531 | {
|
|---|
| 532 | XFS_DINODE_FMT_DEV, /* CHR, BLK: di_dev */
|
|---|
| 533 | XFS_DINODE_FMT_LOCAL, /* DIR, REG: di_c */
|
|---|
| 534 | /* LNK: di_symlink */
|
|---|
| 535 | XFS_DINODE_FMT_EXTENTS, /* DIR, REG, LNK: di_bmx */
|
|---|
| 536 | XFS_DINODE_FMT_BTREE, /* DIR, REG, LNK: di_bmbt */
|
|---|
| 537 | XFS_DINODE_FMT_UUID /* MNT: di_uuid */
|
|---|
| 538 | } xfs_dinode_fmt_t;
|
|---|
| 539 |
|
|---|
| 540 | /*
|
|---|
| 541 | * File types (mode field)
|
|---|
| 542 | */
|
|---|
| 543 | #define IFMT 0170000 /* type of file */
|
|---|
| 544 | #define IFDIR 0040000 /* directory */
|
|---|
| 545 | #define IFREG 0100000 /* regular */
|
|---|
| 546 | #define IFLNK 0120000 /* symbolic link */
|
|---|
