Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame^] | 1 | Extended 2 filesystem structure definitions for ext2ed. |
| 2 | |
| 3 | Most of this file is just copied from the ext2 main include file. |
| 4 | |
| 5 | My parser is very primitive - It only searches for the struct keywords, |
| 6 | and uses the variables in there. The rest of the file is just ignored. |
| 7 | |
| 8 | You will find at the end a few additional types which are not aviable in |
| 9 | the original include file, such as the types "file" and "dir". They have |
| 10 | no variables, but are necessary due to the way ext2ed binds C commands |
| 11 | to specific types. |
| 12 | |
| 13 | Gadi Oxman, 7/95 |
| 14 | |
| 15 | Here is the original copyright: |
| 16 | |
| 17 | /* |
| 18 | * linux/include/linux/ext2_fs.h |
| 19 | * |
| 20 | * Copyright (C) 1992, 1993, 1994 Remy Card (card@masi.ibp.fr) |
| 21 | * Laboratoire MASI - Institut Blaise Pascal |
| 22 | * Universite Pierre et Marie Curie (Paris VI) |
| 23 | * |
| 24 | * from |
| 25 | * |
| 26 | * linux/include/linux/minix_fs.h |
| 27 | * |
| 28 | * Copyright (C) 1991, 1992 Linus Torvalds |
| 29 | */ |
| 30 | |
| 31 | |
| 32 | /* |
| 33 | * ACL structures |
| 34 | */ |
| 35 | struct ext2_acl_header /* Header of Access Control Lists */ |
| 36 | { |
| 37 | unsigned long aclh_size; |
| 38 | unsigned long aclh_file_count; |
| 39 | unsigned long aclh_acle_count; |
| 40 | unsigned long aclh_first_acle; |
| 41 | }; |
| 42 | |
| 43 | struct ext2_acl_entry /* Access Control List Entry */ |
| 44 | { |
| 45 | unsigned long acle_size; |
| 46 | unsigned short acle_perms; /* Access permissions */ |
| 47 | unsigned short acle_type; /* Type of entry */ |
| 48 | unsigned short acle_tag; /* User or group identity */ |
| 49 | unsigned short acle_pad1; |
| 50 | unsigned long acle_next; /* Pointer on next entry for the */ |
| 51 | /* same inode or on next free entry */ |
| 52 | }; |
| 53 | |
| 54 | /* |
| 55 | * Structure of a blocks group descriptor |
| 56 | */ |
| 57 | |
| 58 | struct ext2_group_desc |
| 59 | { |
| 60 | unsigned long bg_block_bitmap; /* Blocks bitmap block */ |
| 61 | unsigned long bg_inode_bitmap; /* Inodes bitmap block */ |
| 62 | unsigned long bg_inode_table; /* Inodes table block */ |
| 63 | unsigned short bg_free_blocks_count; /* Free blocks count */ |
| 64 | unsigned short bg_free_inodes_count; /* Free inodes count */ |
| 65 | unsigned short bg_used_dirs_count; /* Directories count */ |
| 66 | unsigned short bg_pad; |
| 67 | unsigned long bg_reserved[0]; |
| 68 | unsigned long bg_reserved[1]; |
| 69 | unsigned long bg_reserved[2]; |
| 70 | }; |
| 71 | |
| 72 | /* |
| 73 | * Structure of an inode on the disk |
| 74 | */ |
| 75 | struct ext2_inode { |
| 76 | unsigned short i_mode; /* File mode */ |
| 77 | unsigned short i_uid; /* Owner Uid */ |
| 78 | unsigned long i_size; /* Size in bytes */ |
| 79 | unsigned long i_atime; /* Access time */ |
| 80 | unsigned long i_ctime; /* Creation time */ |
| 81 | unsigned long i_mtime; /* Modification time */ |
| 82 | unsigned long i_dtime; /* Deletion Time */ |
| 83 | unsigned short i_gid; /* Group Id */ |
| 84 | unsigned short i_links_count; /* Links count */ |
| 85 | unsigned long i_blocks; /* Blocks count */ |
| 86 | unsigned long i_flags; /* File flags */ |
| 87 | unsigned long l_i_reserved1; |
| 88 | unsigned long i_block[0]; /* Pointers to blocks */ |
| 89 | unsigned long i_block[1]; /* Pointers to blocks */ |
| 90 | unsigned long i_block[2]; /* Pointers to blocks */ |
| 91 | unsigned long i_block[3]; /* Pointers to blocks */ |
| 92 | unsigned long i_block[4]; /* Pointers to blocks */ |
| 93 | unsigned long i_block[5]; /* Pointers to blocks */ |
| 94 | unsigned long i_block[6]; /* Pointers to blocks */ |
| 95 | unsigned long i_block[7]; /* Pointers to blocks */ |
| 96 | unsigned long i_block[8]; /* Pointers to blocks */ |
| 97 | unsigned long i_block[9]; /* Pointers to blocks */ |
| 98 | unsigned long i_block[10]; /* Pointers to blocks */ |
| 99 | unsigned long i_block[11]; /* Pointers to blocks */ |
| 100 | unsigned long i_block[12]; /* Pointers to blocks */ |
| 101 | unsigned long i_block[13]; /* Pointers to blocks */ |
| 102 | unsigned long i_block[14]; /* Pointers to blocks */ |
| 103 | unsigned long i_version; /* File version (for NFS) */ |
| 104 | unsigned long i_file_acl; /* File ACL */ |
| 105 | unsigned long i_dir_acl; /* Directory ACL */ |
| 106 | unsigned long i_faddr; /* Fragment address */ |
| 107 | unsigned char l_i_frag; /* Fragment number */ |
| 108 | unsigned char l_i_fsize; /* Fragment size */ |
| 109 | unsigned short i_pad1; |
| 110 | unsigned long l_i_reserved2[0]; |
| 111 | unsigned long l_i_reserved2[1]; |
| 112 | }; |
| 113 | |
| 114 | /* |
| 115 | * Structure of the super block |
| 116 | */ |
| 117 | struct ext2_super_block { |
| 118 | unsigned long s_inodes_count; /* Inodes count */ |
| 119 | unsigned long s_blocks_count; /* Blocks count */ |
| 120 | unsigned long s_r_blocks_count; /* Reserved blocks count */ |
| 121 | unsigned long s_free_blocks_count; /* Free blocks count */ |
| 122 | unsigned long s_free_inodes_count; /* Free inodes count */ |
| 123 | unsigned long s_first_data_block; /* First Data Block */ |
| 124 | unsigned long s_log_block_size; /* Block size */ |
| 125 | long s_log_frag_size; /* Fragment size */ |
| 126 | unsigned long s_blocks_per_group; /* # Blocks per group */ |
| 127 | unsigned long s_frags_per_group; /* # Fragments per group */ |
| 128 | unsigned long s_inodes_per_group; /* # Inodes per group */ |
| 129 | unsigned long s_mtime; /* Mount time */ |
| 130 | unsigned long s_wtime; /* Write time */ |
| 131 | unsigned short s_mnt_count; /* Mount count */ |
| 132 | short s_max_mnt_count; /* Maximal mount count */ |
| 133 | unsigned short s_magic; /* Magic signature */ |
| 134 | unsigned short s_state; /* File system state */ |
| 135 | unsigned short s_errors; /* Behaviour when detecting errors */ |
| 136 | unsigned short s_pad; |
| 137 | unsigned long s_lastcheck; /* time of last check */ |
| 138 | unsigned long s_checkinterval; /* max. time between checks */ |
| 139 | unsigned long s_creator_os; /* OS */ |
| 140 | unsigned long s_rev_level; /* Revision level */ |
| 141 | unsigned short s_def_resuid; |
| 142 | unsigned short s_deg_resgid; |
| 143 | |
| 144 | unsigned long s_reserved[0]; /* Padding to the end of the block */ |
| 145 | unsigned long s_reserved[1]; |
| 146 | unsigned long s_reserved[2]; |
| 147 | unsigned long s_reserved[3]; |
| 148 | unsigned long s_reserved[4]; |
| 149 | unsigned long s_reserved[5]; |
| 150 | unsigned long s_reserved[6]; |
| 151 | unsigned long s_reserved[7]; |
| 152 | unsigned long s_reserved[8]; |
| 153 | unsigned long s_reserved[9]; |
| 154 | unsigned long s_reserved[10]; |
| 155 | unsigned long s_reserved[11]; |
| 156 | unsigned long s_reserved[12]; |
| 157 | unsigned long s_reserved[13]; |
| 158 | unsigned long s_reserved[14]; |
| 159 | unsigned long s_reserved[15]; |
| 160 | unsigned long s_reserved[16]; |
| 161 | unsigned long s_reserved[17]; |
| 162 | unsigned long s_reserved[18]; |
| 163 | unsigned long s_reserved[19]; |
| 164 | unsigned long s_reserved[20]; |
| 165 | unsigned long s_reserved[21]; |
| 166 | unsigned long s_reserved[22]; |
| 167 | unsigned long s_reserved[23]; |
| 168 | unsigned long s_reserved[24]; |
| 169 | unsigned long s_reserved[25]; |
| 170 | unsigned long s_reserved[26]; |
| 171 | unsigned long s_reserved[27]; |
| 172 | unsigned long s_reserved[28]; |
| 173 | unsigned long s_reserved[29]; |
| 174 | unsigned long s_reserved[30]; |
| 175 | unsigned long s_reserved[31]; |
| 176 | unsigned long s_reserved[32]; |
| 177 | unsigned long s_reserved[33]; |
| 178 | unsigned long s_reserved[34]; |
| 179 | unsigned long s_reserved[35]; |
| 180 | unsigned long s_reserved[36]; |
| 181 | unsigned long s_reserved[37]; |
| 182 | unsigned long s_reserved[38]; |
| 183 | unsigned long s_reserved[39]; |
| 184 | unsigned long s_reserved[40]; |
| 185 | unsigned long s_reserved[41]; |
| 186 | unsigned long s_reserved[42]; |
| 187 | unsigned long s_reserved[43]; |
| 188 | unsigned long s_reserved[44]; |
| 189 | unsigned long s_reserved[45]; |
| 190 | unsigned long s_reserved[46]; |
| 191 | unsigned long s_reserved[47]; |
| 192 | unsigned long s_reserved[48]; |
| 193 | unsigned long s_reserved[49]; |
| 194 | unsigned long s_reserved[50]; |
| 195 | unsigned long s_reserved[51]; |
| 196 | unsigned long s_reserved[52]; |
| 197 | unsigned long s_reserved[53]; |
| 198 | unsigned long s_reserved[54]; |
| 199 | unsigned long s_reserved[55]; |
| 200 | unsigned long s_reserved[56]; |
| 201 | unsigned long s_reserved[57]; |
| 202 | unsigned long s_reserved[58]; |
| 203 | unsigned long s_reserved[59]; |
| 204 | unsigned long s_reserved[60]; |
| 205 | unsigned long s_reserved[61]; |
| 206 | unsigned long s_reserved[62]; |
| 207 | unsigned long s_reserved[63]; |
| 208 | unsigned long s_reserved[64]; |
| 209 | unsigned long s_reserved[65]; |
| 210 | unsigned long s_reserved[66]; |
| 211 | unsigned long s_reserved[67]; |
| 212 | unsigned long s_reserved[68]; |
| 213 | unsigned long s_reserved[69]; |
| 214 | unsigned long s_reserved[70]; |
| 215 | unsigned long s_reserved[71]; |
| 216 | unsigned long s_reserved[72]; |
| 217 | unsigned long s_reserved[73]; |
| 218 | unsigned long s_reserved[74]; |
| 219 | unsigned long s_reserved[75]; |
| 220 | unsigned long s_reserved[76]; |
| 221 | unsigned long s_reserved[77]; |
| 222 | unsigned long s_reserved[78]; |
| 223 | unsigned long s_reserved[79]; |
| 224 | unsigned long s_reserved[80]; |
| 225 | unsigned long s_reserved[81]; |
| 226 | unsigned long s_reserved[82]; |
| 227 | unsigned long s_reserved[83]; |
| 228 | unsigned long s_reserved[84]; |
| 229 | unsigned long s_reserved[85]; |
| 230 | unsigned long s_reserved[86]; |
| 231 | unsigned long s_reserved[87]; |
| 232 | unsigned long s_reserved[88]; |
| 233 | unsigned long s_reserved[89]; |
| 234 | unsigned long s_reserved[90]; |
| 235 | unsigned long s_reserved[91]; |
| 236 | unsigned long s_reserved[92]; |
| 237 | unsigned long s_reserved[93]; |
| 238 | unsigned long s_reserved[94]; |
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| 240 | unsigned long s_reserved[96]; |
| 241 | unsigned long s_reserved[97]; |
| 242 | unsigned long s_reserved[98]; |
| 243 | unsigned long s_reserved[99]; |
| 244 | unsigned long s_reserved[100]; |
| 245 | unsigned long s_reserved[101]; |
| 246 | unsigned long s_reserved[102]; |
| 247 | unsigned long s_reserved[103]; |
| 248 | unsigned long s_reserved[104]; |
| 249 | unsigned long s_reserved[105]; |
| 250 | unsigned long s_reserved[106]; |
| 251 | unsigned long s_reserved[107]; |
| 252 | unsigned long s_reserved[108]; |
| 253 | unsigned long s_reserved[109]; |
| 254 | unsigned long s_reserved[110]; |
| 255 | unsigned long s_reserved[111]; |
| 256 | unsigned long s_reserved[112]; |
| 257 | unsigned long s_reserved[113]; |
| 258 | unsigned long s_reserved[114]; |
| 259 | unsigned long s_reserved[115]; |
| 260 | unsigned long s_reserved[116]; |
| 261 | unsigned long s_reserved[117]; |
| 262 | unsigned long s_reserved[118]; |
| 263 | unsigned long s_reserved[119]; |
| 264 | unsigned long s_reserved[120]; |
| 265 | unsigned long s_reserved[121]; |
| 266 | unsigned long s_reserved[122]; |
| 267 | unsigned long s_reserved[123]; |
| 268 | unsigned long s_reserved[124]; |
| 269 | unsigned long s_reserved[125]; |
| 270 | unsigned long s_reserved[126]; |
| 271 | unsigned long s_reserved[127]; |
| 272 | unsigned long s_reserved[128]; |
| 273 | unsigned long s_reserved[129]; |
| 274 | unsigned long s_reserved[130]; |
| 275 | unsigned long s_reserved[131]; |
| 276 | unsigned long s_reserved[132]; |
| 277 | unsigned long s_reserved[133]; |
| 278 | unsigned long s_reserved[134]; |
| 279 | unsigned long s_reserved[135]; |
| 280 | unsigned long s_reserved[136]; |
| 281 | unsigned long s_reserved[137]; |
| 282 | unsigned long s_reserved[138]; |
| 283 | unsigned long s_reserved[139]; |
| 284 | unsigned long s_reserved[140]; |
| 285 | unsigned long s_reserved[141]; |
| 286 | unsigned long s_reserved[142]; |
| 287 | unsigned long s_reserved[143]; |
| 288 | unsigned long s_reserved[144]; |
| 289 | unsigned long s_reserved[145]; |
| 290 | unsigned long s_reserved[146]; |
| 291 | unsigned long s_reserved[147]; |
| 292 | unsigned long s_reserved[148]; |
| 293 | unsigned long s_reserved[149]; |
| 294 | unsigned long s_reserved[150]; |
| 295 | unsigned long s_reserved[151]; |
| 296 | unsigned long s_reserved[152]; |
| 297 | unsigned long s_reserved[153]; |
| 298 | unsigned long s_reserved[154]; |
| 299 | unsigned long s_reserved[155]; |
| 300 | unsigned long s_reserved[156]; |
| 301 | unsigned long s_reserved[157]; |
| 302 | unsigned long s_reserved[158]; |
| 303 | unsigned long s_reserved[159]; |
| 304 | unsigned long s_reserved[160]; |
| 305 | unsigned long s_reserved[161]; |
| 306 | unsigned long s_reserved[162]; |
| 307 | unsigned long s_reserved[163]; |
| 308 | unsigned long s_reserved[164]; |
| 309 | unsigned long s_reserved[165]; |
| 310 | unsigned long s_reserved[166]; |
| 311 | unsigned long s_reserved[167]; |
| 312 | unsigned long s_reserved[168]; |
| 313 | unsigned long s_reserved[169]; |
| 314 | unsigned long s_reserved[170]; |
| 315 | unsigned long s_reserved[171]; |
| 316 | unsigned long s_reserved[172]; |
| 317 | unsigned long s_reserved[173]; |
| 318 | unsigned long s_reserved[174]; |
| 319 | unsigned long s_reserved[175]; |
| 320 | unsigned long s_reserved[176]; |
| 321 | unsigned long s_reserved[177]; |
| 322 | unsigned long s_reserved[178]; |
| 323 | unsigned long s_reserved[179]; |
| 324 | unsigned long s_reserved[180]; |
| 325 | unsigned long s_reserved[181]; |
| 326 | unsigned long s_reserved[182]; |
| 327 | unsigned long s_reserved[183]; |
| 328 | unsigned long s_reserved[184]; |
| 329 | unsigned long s_reserved[185]; |
| 330 | unsigned long s_reserved[186]; |
| 331 | unsigned long s_reserved[187]; |
| 332 | unsigned long s_reserved[188]; |
| 333 | unsigned long s_reserved[189]; |
| 334 | unsigned long s_reserved[190]; |
| 335 | unsigned long s_reserved[191]; |
| 336 | unsigned long s_reserved[192]; |
| 337 | unsigned long s_reserved[193]; |
| 338 | unsigned long s_reserved[194]; |
| 339 | unsigned long s_reserved[195]; |
| 340 | unsigned long s_reserved[196]; |
| 341 | unsigned long s_reserved[197]; |
| 342 | unsigned long s_reserved[198]; |
| 343 | unsigned long s_reserved[199]; |
| 344 | unsigned long s_reserved[200]; |
| 345 | unsigned long s_reserved[201]; |
| 346 | unsigned long s_reserved[202]; |
| 347 | unsigned long s_reserved[203]; |
| 348 | unsigned long s_reserved[204]; |
| 349 | unsigned long s_reserved[205]; |
| 350 | unsigned long s_reserved[206]; |
| 351 | unsigned long s_reserved[207]; |
| 352 | unsigned long s_reserved[208]; |
| 353 | unsigned long s_reserved[209]; |
| 354 | unsigned long s_reserved[210]; |
| 355 | unsigned long s_reserved[211]; |
| 356 | unsigned long s_reserved[212]; |
| 357 | unsigned long s_reserved[213]; |
| 358 | unsigned long s_reserved[214]; |
| 359 | unsigned long s_reserved[215]; |
| 360 | unsigned long s_reserved[216]; |
| 361 | unsigned long s_reserved[217]; |
| 362 | unsigned long s_reserved[218]; |
| 363 | unsigned long s_reserved[219]; |
| 364 | unsigned long s_reserved[220]; |
| 365 | unsigned long s_reserved[221]; |
| 366 | unsigned long s_reserved[222]; |
| 367 | unsigned long s_reserved[223]; |
| 368 | unsigned long s_reserved[224]; |
| 369 | unsigned long s_reserved[225]; |
| 370 | unsigned long s_reserved[226]; |
| 371 | unsigned long s_reserved[227]; |
| 372 | unsigned long s_reserved[228]; |
| 373 | unsigned long s_reserved[229]; |
| 374 | unsigned long s_reserved[230]; |
| 375 | unsigned long s_reserved[231]; |
| 376 | unsigned long s_reserved[232]; |
| 377 | unsigned long s_reserved[233]; |
| 378 | unsigned long s_reserved[234]; |
| 379 | }; |
| 380 | |
| 381 | The following is actually not used, due to the variable length of the |
| 382 | name field. EXT2ED handles directories through the type "dir" below. |
| 383 | |
| 384 | /* |
| 385 | * Structure of a directory entry |
| 386 | */ |
| 387 | |
| 388 | /* struct ext2_dir_entry { */ |
| 389 | /* |
| 390 | unsigned long inode; /* Inode number */ |
| 391 | unsigned short rec_len; /* Directory entry length */ |
| 392 | unsigned short name_len; /* Name length */ |
| 393 | char name[EXT2_NAME_LEN]; /* File name */ |
| 394 | }; |
| 395 | */ |
| 396 | |
| 397 | struct file { |
| 398 | }; |
| 399 | |
| 400 | struct dir { |
| 401 | }; |
| 402 | |
| 403 | struct block_bitmap { |
| 404 | }; |
| 405 | |
| 406 | struct inode_bitmap { |
| 407 | }; |