Mercurial > hg > toybox
annotate toys/e2fs.h @ 562:4d802d438983
Match uint64_t with PRIu64 to avoid warnings on 64 bit builds.
author | Rob Landley <rob@landley.net> |
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date | Sat, 14 Apr 2012 21:27:00 -0500 |
parents | aadd28817955 |
children | 786841fdb1e0 |
rev | line source |
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75
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1 /* vi: set ts=4: |
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2 * |
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3 * mke2fs.h - Headers for ext2 |
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4 * |
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5 * Copyright 2006 Rob Landley <rob@landley.net> |
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6 */ |
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7 |
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8 // Stuff defined in linux/ext2_fs.h |
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9 |
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10 #define EXT2_SUPER_MAGIC 0xEF53 |
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11 |
76 | 12 struct ext2_superblock { |
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13 uint32_t inodes_count; // Inodes count |
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14 uint32_t blocks_count; // Blocks count |
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15 uint32_t r_blocks_count; // Reserved blocks count |
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16 uint32_t free_blocks_count; // Free blocks count |
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17 uint32_t free_inodes_count; // Free inodes count |
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18 uint32_t first_data_block; // First Data Block |
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19 uint32_t log_block_size; // Block size |
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20 uint32_t log_frag_size; // Fragment size |
76 | 21 uint32_t blocks_per_group; // Blocks per group |
22 uint32_t frags_per_group; // Fragments per group | |
23 uint32_t inodes_per_group; // Inodes per group | |
75
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24 uint32_t mtime; // Mount time |
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25 uint32_t wtime; // Write time |
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26 uint16_t mnt_count; // Mount count |
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27 uint16_t max_mnt_count; // Maximal mount count |
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28 uint16_t magic; // Magic signature |
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29 uint16_t state; // File system state |
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30 uint16_t errors; // Behaviour when detecting errors |
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31 uint16_t minor_rev_level; // minor revision level |
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32 uint32_t lastcheck; // time of last check |
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33 uint32_t checkinterval; // max. time between checks |
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34 uint32_t creator_os; // OS |
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35 uint32_t rev_level; // Revision level |
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36 uint16_t def_resuid; // Default uid for reserved blocks |
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37 uint16_t def_resgid; // Default gid for reserved blocks |
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38 uint32_t first_ino; // First non-reserved inode |
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39 uint16_t inode_size; // size of inode structure |
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40 uint16_t block_group_nr; // block group # of this superblock |
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41 uint32_t feature_compat; // compatible feature set |
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42 uint32_t feature_incompat; // incompatible feature set |
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43 uint32_t feature_ro_compat; // readonly-compatible feature set |
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44 char uuid[16]; // 128-bit uuid for volume |
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45 char volume_name[16]; // volume name |
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46 char last_mounted[64]; // directory where last mounted |
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47 uint32_t alg_usage_bitmap; // For compression |
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48 // For EXT2_COMPAT_PREALLOC |
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49 uint8_t prealloc_blocks; // Nr of blocks to try to preallocate |
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50 uint8_t prealloc_dir_blocks; //Nr to preallocate for dirs |
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51 uint16_t padding1; |
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52 // For EXT3_FEATURE_COMPAT_HAS_JOURNAL |
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53 uint8_t journal_uuid[16]; // uuid of journal superblock |
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54 uint32_t journal_inum; // inode number of journal file |
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55 uint32_t journal_dev; // device number of journal file |
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56 uint32_t last_orphan; // start of list of inodes to delete |
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57 uint32_t hash_seed[4]; // HTREE hash seed |
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58 uint8_t def_hash_version; // Default hash version to use |
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59 uint8_t padding2[3]; |
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60 uint32_t default_mount_opts; |
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61 uint32_t first_meta_bg; // First metablock block group |
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62 uint32_t mkfs_time; // Creation timestamp |
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63 uint32_t jnl_blocks[17]; // Backup of journal inode |
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64 // uint32_t reserved[172]; // Padding to the end of the block |
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65 }; |
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66 |
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67 struct ext2_group |
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68 { |
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69 uint32_t block_bitmap; // Block number of block bitmap |
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70 uint32_t inode_bitmap; // Block number of inode bitmap |
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71 uint32_t inode_table; // Block number of inode table |
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72 uint16_t free_blocks_count; // How many free blocks in this group? |
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73 uint16_t free_inodes_count; // How many free inodes in this group? |
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74 uint16_t used_dirs_count; // How many directories? |
82 | 75 uint16_t reserved[7]; // pad to 32 bytes |
80
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76 }; |
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77 |
76 | 78 struct ext2_dentry { |
79 uint32_t inode; // Inode number | |
80 uint16_t rec_len; // Directory entry length | |
81 uint8_t name_len; // Name length | |
82 uint8_t file_type; | |
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83 char name[0]; // File name |
76 | 84 }; |
85 | |
86 struct ext2_inode { | |
87 uint16_t mode; // File mode | |
88 uint16_t uid; // Low 16 bits of Owner Uid | |
89 uint32_t size; // Size in bytes | |
90 uint32_t atime; // Access time | |
91 uint32_t ctime; // Creation time | |
92 uint32_t mtime; // Modification time | |
93 uint32_t dtime; // Deletion Time | |
94 uint16_t gid; // Low 16 bits of Group Id | |
95 uint16_t links_count; // Links count | |
96 uint32_t blocks; // Blocks count | |
97 uint32_t flags; // File flags | |
98 uint32_t reserved1; | |
99 uint32_t block[15]; // Pointers to blocks | |
100 uint32_t generation; // File version (for NFS) | |
101 uint32_t file_acl; // File ACL | |
99
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102 uint32_t dir_acl; // Directory ACL (or top bits of file length) |
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103 uint32_t faddr; // Last block in file |
76 | 104 uint8_t frag; // Fragment number |
105 uint8_t fsize; // Fragment size | |
106 uint16_t pad1; | |
107 uint16_t uid_high; // High bits of uid | |
108 uint16_t gid_high; // High bits of gid | |
109 uint32_t reserved2; | |
110 }; | |
111 | |
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112 #define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001 |
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113 #define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002 |
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114 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 |
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115 #define EXT2_FEATURE_COMPAT_EXT_ATTR 0x0008 |
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116 #define EXT2_FEATURE_COMPAT_RESIZE_INO 0x0010 |
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117 #define EXT2_FEATURE_COMPAT_DIR_INDEX 0x0020 |
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118 |
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119 #define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 |
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120 #define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 |
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121 #define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 |
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122 |
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123 #define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001 |
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124 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002 |
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125 #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 |
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126 #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 |
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127 #define EXT2_FEATURE_INCOMPAT_META_BG 0x0010 |
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128 |
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129 #define EXT2_NAME_LEN 255 |
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130 |
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131 // Ext2 directory file types. Only the low 3 bits are used. The |
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132 // other bits are reserved for now. |
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133 |
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134 enum { |
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135 EXT2_FT_UNKNOWN, |
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136 EXT2_FT_REG_FILE, |
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137 EXT2_FT_DIR, |
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138 EXT2_FT_CHRDEV, |
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139 EXT2_FT_BLKDEV, |
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140 EXT2_FT_FIFO, |
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141 EXT2_FT_SOCK, |
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142 EXT2_FT_SYMLINK, |
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143 EXT2_FT_MAX |
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144 }; |