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4850 | mario79 | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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7736 | dunkaist | 3 | ;; Copyright (C) KolibriOS team 2013-2020. All rights reserved. ;; |
4 | ;; Distributed under terms of the GNU General Public License ;; |
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4850 | mario79 | 5 | ;; ;; |
6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
8 | $Revision: 7736 $ |
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9 | |||
7736 | dunkaist | 10 | ; file types from stat.h |
11 | S_IFMT = 0170000o ; These bits determine file type |
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12 | S_IFDIR = 0040000o ; Directory |
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13 | S_IFCHR = 0020000o ; Character device |
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14 | S_IFBLK = 0060000o ; Block device |
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15 | S_IFREG = 0100000o ; Regular file |
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16 | S_IFIFO = 0010000o ; FIFO |
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17 | S_IFLNK = 0120000o ; Symbolic link |
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18 | S_IFSOCK = 0140000o ; Socket |
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4850 | mario79 | 19 | |
3913 | dunkaist | 20 | ; XFS null constant: empty fields must be all ones, not zeros! |
21 | XFS_NULL = -1 |
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22 | |||
23 | XFS_SECT_SB = 0 |
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24 | |||
25 | ; signatures of file system structures |
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26 | XFS_AGF_MAGIC = 'XAGF' |
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27 | XFS_DINODE_MAGIC = 'IN' |
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28 | XFS_BMAP_MAGIC = 'BMAP' |
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7736 | dunkaist | 29 | XFS_DA_NODE_MAGIC = 0xbefe |
30 | XFS_DIR2_LEAF1_MAGIC = 0xf1d2 |
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31 | XFS_DIR2_LEAFN_MAGIC = 0xffd2 |
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3913 | dunkaist | 32 | XFS_DIR2_BLOCK_MAGIC = 'XD2B' |
33 | XFS_DIR2_DATA_MAGIC = 'XD2D' |
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34 | |||
7736 | dunkaist | 35 | XFS_BMAP3_MAGIC = 'BMA3' |
36 | XFS_DA3_NODE_MAGIC = 0xbe3e ; non-leaf blocks |
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37 | XFS_DIR3_LEAF1_MAGIC = 0xf13d ; v3 dir single blks |
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38 | XFS_DIR3_LEAFN_MAGIC = 0xff3d ; v3 dir multi blks |
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39 | XFS_DIR3_BLOCK_MAGIC = 'XDB3' ; single block dirs |
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40 | XFS_DIR3_DATA_MAGIC = 'XDD3' ; multiblock dirs |
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3913 | dunkaist | 41 | |
7736 | dunkaist | 42 | XFS_SB_MAGIC = 'XFSB' |
43 | XFS_SB_VERSION_NUMBITS = 0x000f |
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44 | XFS_SB_VERSION_ALLFBITS = 0xfff0 |
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45 | XFS_SB_VERSION_REALFBITS = 0x0ff0 |
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46 | XFS_SB_VERSION_ATTRBIT = 0x0010 |
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47 | XFS_SB_VERSION_NLINKBIT = 0x0020 |
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48 | XFS_SB_VERSION_QUOTABIT = 0x0040 |
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49 | XFS_SB_VERSION_ALIGNBIT = 0x0080 |
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50 | XFS_SB_VERSION_DALIGNBIT = 0x0100 |
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51 | XFS_SB_VERSION_SHAREDBIT = 0x0200 |
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52 | XFS_SB_VERSION_LOGV2BIT = 0x0400 |
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53 | XFS_SB_VERSION_SECTORBIT = 0x0800 |
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54 | XFS_SB_VERSION_EXTFLGBIT = 0x1000 |
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55 | XFS_SB_VERSION_DIRV2BIT = 0x2000 |
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56 | XFS_SB_VERSION_BORGBIT = 0x4000 ; ASCII only case-insensitive |
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57 | XFS_SB_VERSION_MOREBITSBIT = 0x8000 |
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58 | |||
59 | XFS_SB_VERSION_SUPPORTED = XFS_SB_VERSION_NUMBITS OR \ |
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60 | XFS_SB_VERSION_ATTRBIT OR \ |
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61 | XFS_SB_VERSION_NLINKBIT OR \ |
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62 | XFS_SB_VERSION_QUOTABIT OR \ |
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63 | XFS_SB_VERSION_ALIGNBIT OR \ |
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64 | XFS_SB_VERSION_LOGV2BIT OR \ |
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65 | XFS_SB_VERSION_SECTORBIT OR \ |
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66 | XFS_SB_VERSION_EXTFLGBIT OR \ |
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67 | XFS_SB_VERSION_DIRV2BIT OR \ |
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68 | XFS_SB_VERSION_MOREBITSBIT |
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69 | |||
70 | XFS_SB_VERSION2_RESERVED1BIT = 0x00000001 |
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71 | XFS_SB_VERSION2_LAZYSBCOUNTBIT = 0x00000002 ; Superblk counters |
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72 | XFS_SB_VERSION2_RESERVED4BIT = 0x00000004 |
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73 | XFS_SB_VERSION2_ATTR2BIT = 0x00000008 ; Inline attr rework |
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74 | XFS_SB_VERSION2_PARENTBIT = 0x00000010 ; parent pointers in xattr |
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75 | XFS_SB_VERSION2_PROJID32BIT = 0x00000080 ; 32 bit project id |
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76 | XFS_SB_VERSION2_CRCBIT = 0x00000100 ; metadata CRCs |
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77 | XFS_SB_VERSION2_FTYPE = 0x00000200 ; inode type in dir |
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78 | |||
79 | XFS_SB_VERSION2_SUPPORTED = XFS_SB_VERSION2_LAZYSBCOUNTBIT OR \ |
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80 | XFS_SB_VERSION2_ATTR2BIT OR \ |
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81 | XFS_SB_VERSION2_PARENTBIT OR \ |
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82 | XFS_SB_VERSION2_PROJID32BIT OR \ |
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83 | XFS_SB_VERSION2_CRCBIT OR \ |
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84 | XFS_SB_VERSION2_FTYPE |
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85 | |||
86 | XFS_SB_FEAT_INCOMPAT_FTYPE = 1 ; filetype in dirent |
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87 | XFS_SB_FEAT_INCOMPAT_SPINODES = 2 ; sparse inode chunks |
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88 | XFS_SB_FEAT_INCOMPAT_META_UUID = 4 ; metadata UUID |
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89 | XFS_SB_FEAT_INCOMPAT_SUPPORTED = XFS_SB_FEAT_INCOMPAT_FTYPE OR \ |
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90 | XFS_SB_FEAT_INCOMPAT_SPINODES OR \ |
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91 | XFS_SB_FEAT_INCOMPAT_META_UUID |
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92 | |||
3913 | dunkaist | 93 | ; bitfield lengths for packed extent |
94 | ; MSB to LSB / left to right |
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95 | BMBT_EXNTFLAG_BITLEN = 1 |
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96 | BMBT_STARTOFF_BITLEN = 54 |
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97 | BMBT_STARTBLOCK_BITLEN = 52 |
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98 | BMBT_BLOCKCOUNT_BITLEN = 21 |
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99 | |||
7736 | dunkaist | 100 | XFS_DIR2_DATA_ALIGN_LOG = 3 |
101 | XFS_DIR2_DATA_ALIGN = 1 SHL XFS_DIR2_DATA_ALIGN_LOG |
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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 |
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105 | XFS_DIR2_FREE_OFFSET = 2*XFS_DIR2_SPACE_SIZE |
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3913 | dunkaist | 106 | |
107 | ; data section magic constants for directories (xfs_dir2_data.h) |
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108 | XFS_DIR2_DATA_FD_COUNT = 3 |
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109 | |||
110 | ; valid inode formats |
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111 | ; enum xfs_dinode_fmt (xfs_dinode.h) |
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7736 | dunkaist | 112 | XFS_DINODE_FMT_DEV = 0 |
113 | XFS_DINODE_FMT_LOCAL = 1 |
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114 | XFS_DINODE_FMT_EXTENTS = 2 |
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115 | XFS_DINODE_FMT_BTREE = 3 |
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116 | XFS_DINODE_FMT_UUID = 4 |
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3913 | dunkaist | 117 | |
118 | ; size of the unlinked inode hash table in the agi |
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119 | XFS_AGI_UNLINKED_BUCKETS = 64 |
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120 | |||
121 | ; possible extent states |
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122 | ; enum xfs_exntst_t (xfs_bmap_btree.h) |
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123 | XFS_EXT_NORM = 0 |
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124 | XFS_EXT_UNWRITTEN = 1 |
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125 | XFS_EXT_DMAPI_OFFLINE = 2 |
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126 | XFS_EXT_INVALID = 3 |
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127 | |||
128 | ; values for inode core flags / di_flags (xfs_dinode.h) |
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129 | XFS_DIFLAG_REALTIME_BIT = 0 ; file's blocks come from rt area |
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130 | XFS_DIFLAG_PREALLOC_BIT = 1 ; file space has been preallocated |
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131 | XFS_DIFLAG_NEWRTBM_BIT = 2 ; for rtbitmap inode, new format |
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132 | XFS_DIFLAG_NODUMP_BIT = 7 ; do not dump |
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133 | XFS_DIFLAG_REALTIME = (1 SHL XFS_DIFLAG_REALTIME_BIT) |
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134 | XFS_DIFLAG_PREALLOC = (1 SHL XFS_DIFLAG_PREALLOC_BIT) |
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135 | XFS_DIFLAG_NEWRTBM = (1 SHL XFS_DIFLAG_NEWRTBM_BIT) |
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136 | XFS_DIFLAG_NODUMP = (1 SHL XFS_DIFLAG_NODUMP_BIT) |
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137 | |||
138 | ; superblock _ondisk_ structure (xfs_sb.h) |
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139 | ; this is _not_ the partition structure |
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140 | ; for XFS partition structure see XFS below |
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141 | struct xfs_sb |
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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 |
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144 | sb_dblocks DQ ? ; number of data blocks |
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145 | sb_rblocks DQ ? ; number of realtime blocks |
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146 | sb_rextents DQ ? ; number of realtime extents |
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147 | sb_uuid rb 16 ; file system unique identifier |
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148 | sb_logstart DQ ? ; starting block of log (for internal journal) |
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149 | sb_rootino DQ ? ; root inode number |
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150 | sb_rbmino DQ ? ; bitmap inode for realtime extents |
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151 | sb_rsumino DQ ? ; summary inode for rt bitmap |
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152 | sb_rextsize dd ? ; realtime extent size, blocks |
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153 | sb_agblocks dd ? ; size of an allocation group (the last one may be smaller!) |
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154 | sb_agcount dd ? ; number of allocation groups |
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155 | sb_rbmblocks dd ? ; number of rt bitmap blocks |
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156 | sb_logblocks dd ? ; number of log blocks |
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157 | sb_versionnum dw ? ; header version |
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158 | sb_sectsize dw ? ; volume sector size in bytes |
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159 | sb_inodesize dw ? ; inode size, bytes |
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160 | sb_inopblock dw ? ; inodes per block |
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161 | sb_fname rb 12 ; inodes per block (aka label) |
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162 | sb_blocklog db ? ; log2 of sb_blocksize |
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163 | sb_sectlog db ? ; log2 of sb_blocksize |
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164 | sb_inodelog db ? ; log2 of sb_inodesize |
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165 | sb_inopblog db ? ; log2 of sb_inopblock |
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166 | sb_agblklog db ? ; log2 of sb_agblocks (rounded up!) |
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167 | sb_rextslog db ? ; log2 of sb_rextents |
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168 | sb_inprogress db ? ; mkfs is in progress, don't mount |
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169 | sb_imax_pct db ? ; max % of fs for inode space |
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3913 | dunkaist | 170 | ; statistics |
7736 | dunkaist | 171 | sb_icount DQ ? ; allocated inodes |
172 | sb_ifree DQ ? ; free inodes |
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173 | sb_fdblocks DQ ? ; free data blocks |
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174 | sb_frextents DQ ? ; free realtime extents |
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3913 | dunkaist | 175 | |
7736 | dunkaist | 176 | sb_uquotino DQ ? ; user quota inode |
177 | sb_gquotino DQ ? ; group quota inode |
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178 | sb_qflags dw ? ; quota flags |
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179 | sb_flags db ? ; misc. flags |
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180 | sb_shared_vn db ? ; shared version number |
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181 | sb_inoalignmt dd ? ; inode chunk alignment, fsblocks |
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182 | sb_unit dd ? ; stripe or raid unit |
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183 | sb_width dd ? ; stripe or raid width |
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184 | sb_dirblklog db ? ; log2 of dir block size (fsbs) |
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185 | sb_logsectlog db ? ; log2 of the log sector size |
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186 | sb_logsectsize dw ? ; sector size for the log, bytes |
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187 | sb_logsunit dd ? ; stripe unit size for the log |
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188 | sb_features2 dd ? ; additional feature bits |
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189 | sb_bad_features2 dd ? |
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190 | sb_features_compat dd ? |
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191 | sb_features_ro_compat dd ? |
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192 | sb_features_incompat dd ? |
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193 | sb_features_log_incompat dd ? |
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194 | sb_crc dd ? ; superblock crc |
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195 | sb_spino_align dd ? ; sparse inode chunk alignment |
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196 | sb_pquotino DQ ? ; project quota inode |
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197 | sb_lsn DQ ? ; last write sequence |
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198 | sb_meta_uuid rb 16 ; metadata file system unique id |
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3913 | dunkaist | 199 | ends |
200 | |||
201 | ; structure to store create, access and modification time in inode core |
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202 | struct xfs_timestamp |
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203 | t_sec dd ? |
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204 | t_nsec dd ? ; nanoseconds |
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205 | ends |
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206 | |||
207 | ; inode core structure: basic information about file |
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208 | struct xfs_dinode_core |
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7736 | dunkaist | 209 | di_magic dw ? ; inode magic = XFS_DINODE_MAGIC |
210 | di_mode dw ? ; mode and type of file |
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211 | di_version db ? ; inode version |
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212 | di_format db ? ; format of di_c data |
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213 | di_onlink dw ? ; old number of links to file |
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214 | di_uid dd ? ; owner's user id |
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215 | di_gid dd ? ; owner's group id |
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216 | di_nlink dd ? ; number of links to file |
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217 | di_projid dw ? ; owner's project id |
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218 | di_pad rb 8 ; unused, zeroed space |
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219 | di_flushiter dw ? ; incremented on flush |
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220 | di_atime xfs_timestamp ; time last accessed |
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221 | di_mtime xfs_timestamp ; time last modified |
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222 | di_ctime xfs_timestamp ; time created/inode modified |
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223 | di_size DQ ? ; number of bytes in file |
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224 | di_nblocks DQ ? ; number of direct & btree blocks used |
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225 | di_extsize dd ? ; basic/minimum extent size for file |
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226 | di_nextents dd ? ; number of extents in data fork |
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227 | di_anextents dw ? ; number of extents in attribute fork |
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228 | di_forkoff db ? ; attr fork offs, <<3 for 64b align |
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229 | di_aformat db ? ; format of attr fork's data |
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230 | di_dmevmask dd ? ; DMIG event mask |
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231 | di_dmstate dw ? ; DMIG state info |
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232 | di_flags dw ? ; random flags, XFS_DIFLAG_... |
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233 | di_gen dd ? ; generation number |
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234 | di_next_unlinked dd ? ; unlinked but still used inode (if any, XFS_NULL otherwise) |
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3913 | dunkaist | 235 | ends |
236 | |||
7736 | dunkaist | 237 | struct xfs_dinode3_core xfs_dinode_core |
238 | di_crc dd ? ; CRC of the inode |
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239 | di_changecount DQ ? ; number of attribute changes |
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240 | di_lsn DQ ? ; flush sequence |
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241 | di_flags2 DQ ? ; more random flags |
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242 | di_cowextsize dd ? ; basic cow extent size for file |
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243 | di_pad2 rb 12 ; more padding for future expansion |
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3913 | dunkaist | 244 | |
7736 | dunkaist | 245 | ; fields only written to during inode creation |
246 | di_crtime xfs_timestamp ; time created |
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247 | di_ino DQ ? ; inode number |
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248 | di_uuid rb 16 ; UUID of the filesystem |
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249 | ends |
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250 | |||
251 | |||
3913 | dunkaist | 252 | struct xfs_dir2_sf_hdr |
7736 | dunkaist | 253 | count db ? |
254 | i8count db ? |
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255 | parent DQ ? ; parent inode number, 4 or 8 bytes |
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3913 | dunkaist | 256 | ends |
257 | |||
258 | struct xfs_dir2_sf_entry |
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259 | namelen db ? ; actual name length (ASCII) |
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260 | offset rb 2 ; saved offset |
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261 | name db ? ; name, variable size |
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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 |
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267 | entries xfs_dir2_sf_entry |
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268 | ends |
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3913 | dunkaist | 269 | |
270 | ; active entry in a data block |
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271 | ; aligned to 8 bytes |
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272 | ; tag appears as the last 2 bytes |
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273 | struct xfs_dir2_data_entry |
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7736 | dunkaist | 274 | inumber DQ ? |
275 | namelen db ? |
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276 | name db ? ; name bytes array without terminator |
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277 | ; tag dw ? ; starting offset of the entry |
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3913 | dunkaist | 278 | ends |
279 | |||
280 | ; unused entry in a data block |
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281 | struct xfs_dir2_data_unused |
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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 |
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288 | struct xfs_dir2_data_union |
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289 | union |
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290 | xentry xfs_dir2_data_entry |
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291 | unused xfs_dir2_data_unused |
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292 | ends |
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293 | ends |
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294 | |||
295 | ; describe a free area in the data block |
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296 | ; the freespace will be formatted as a xfs_dir2_data_unused_t |
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297 | struct xfs_dir2_data_free |
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298 | offset dw ? ; start of freespace |
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299 | length dw ? ; length of freespace |
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300 | ends |
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301 | |||
302 | ; header for the data blocks |
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303 | ; always at the beginning of a directory-sized block |
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304 | ; the code knows that XFS_DIR2_DATA_FD_COUNT is 3 |
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305 | struct xfs_dir2_data_hdr |
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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 |
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309 | bestfree3 xfs_dir2_data_free |
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310 | ends |
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311 | |||
7736 | dunkaist | 312 | struct xfs_dir3_data_hdr xfs_dir2_data_hdr |
313 | magic3 dd ? |
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314 | crc dd ? |
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315 | blkno DQ ? |
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316 | lsn DQ ? |
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317 | uuid rb 16 |
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318 | owner DQ ? |
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319 | ends |
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3913 | dunkaist | 320 | |
321 | ; leaf block entry |
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322 | struct xfs_dir2_leaf_entry |
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323 | hashval dd ? ; hash value of name |
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324 | address dd ? ; address of data entry |
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325 | ends |
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326 | |||
327 | ; the tail of directory block |
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328 | struct xfs_dir2_block_tail |
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329 | count dd ? ; count of leaf entries |
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330 | stale dd ? ; count of stale leaf entries |
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331 | ends |
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332 | |||
333 | ; generic single-block structure, for xfs_db |
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334 | struct xfs_dir2_block |
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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 |
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338 | ; tail xfs_dir2_block_tail |
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339 | ends |
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340 | |||
341 | struct xfs_da_blkinfo |
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342 | forw dd ? ; previous block in list |
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343 | back dd ? ; following block in list |
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344 | magic dw ? ; validity check on block |
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345 | pad dw ? ; unused |
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346 | ends |
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347 | |||
348 | struct xfs_dir2_leaf_hdr |
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7736 | dunkaist | 349 | info xfs_da_blkinfo |
350 | count dw ? |
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351 | stale dw ? |
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3913 | dunkaist | 352 | ends |
353 | |||
7736 | dunkaist | 354 | struct xfs_da3_blkinfo xfs_da_blkinfo |
355 | crc dd ? ; CRC of block |
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356 | blkno DQ ? ; first block of the buffer |
||
357 | lsn DQ ? ; sequence number of last write |
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358 | uuid rb 16 ; filesystem we belong to |
||
359 | owner DQ ? ; inode that owns the block |
||
360 | ends |
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3913 | dunkaist | 361 | |
7736 | dunkaist | 362 | struct xfs_dir3_leaf_hdr |
363 | info xfs_da3_blkinfo |
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364 | count dw ? |
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365 | stale dw ? |
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366 | pad dd ? |
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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) |
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371 | struct xfs_dir2_leaf |
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7736 | dunkaist | 372 | hdr xfs_dir2_leaf_hdr |
373 | ents xfs_dir2_leaf_entry |
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374 | ; bests dw ? |
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375 | ; tail xfs_dir2_leaf_tail |
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3913 | dunkaist | 376 | ends |
377 | |||
7736 | dunkaist | 378 | struct xfs_dir3_leaf |
379 | hdr xfs_dir3_leaf_hdr |
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380 | ents xfs_dir2_leaf_entry |
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381 | ; bests |
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382 | ; tail |
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383 | ends |
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3913 | dunkaist | 384 | |
385 | struct xfs_dir2_free_hdr |
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386 | magic dd ? ; XFS_DIR2_FREE_MAGIC |
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387 | firstdb dd ? ; db of first entry |
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388 | nvalid dd ? ; count of valid entries |
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389 | nused dd ? ; count of used entries |
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390 | ends |
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391 | |||
392 | struct xfs_da_node_hdr |
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393 | info xfs_da_blkinfo |
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394 | count dw ? |
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395 | level dw ? |
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396 | ends |
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397 | |||
398 | struct xfs_da_node_entry |
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399 | hashval dd ? ; hash value for this descendant |
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400 | before dd ? ; Btree block before this key |
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401 | ends |
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402 | |||
403 | struct xfs_da_intnode |
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404 | hdr xfs_da_node_hdr |
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405 | btree xfs_da_node_entry |
||
406 | ends |
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407 | |||
7736 | dunkaist | 408 | struct xfs_da3_node_hdr |
409 | info xfs_da3_blkinfo |
||
410 | count dw ? |
||
411 | level dw ? |
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412 | pad dd ? |
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413 | ends |
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3913 | dunkaist | 414 | |
7736 | dunkaist | 415 | struct xfs_da3_intnode |
416 | hdr xfs_da3_node_hdr |
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417 | btree xfs_da_node_entry |
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418 | ends |
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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 |
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427 | struct xfs_bmbt_irec |
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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 |
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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 | ends3><3> |