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Diffstat (limited to 'e2fsprogs/ext2fs/ext2_fs.h')
-rw-r--r-- | e2fsprogs/ext2fs/ext2_fs.h | 570 |
1 files changed, 0 insertions, 570 deletions
diff --git a/e2fsprogs/ext2fs/ext2_fs.h b/e2fsprogs/ext2fs/ext2_fs.h deleted file mode 100644 index cb49d7a60..000000000 --- a/e2fsprogs/ext2fs/ext2_fs.h +++ /dev/null | |||
@@ -1,570 +0,0 @@ | |||
1 | /* vi: set sw=4 ts=4: */ | ||
2 | /* | ||
3 | * linux/include/linux/ext2_fs.h | ||
4 | * | ||
5 | * Copyright (C) 1992, 1993, 1994, 1995 | ||
6 | * Remy Card (card@masi.ibp.fr) | ||
7 | * Laboratoire MASI - Institut Blaise Pascal | ||
8 | * Universite Pierre et Marie Curie (Paris VI) | ||
9 | * | ||
10 | * from | ||
11 | * | ||
12 | * linux/include/linux/minix_fs.h | ||
13 | * | ||
14 | * Copyright (C) 1991, 1992 Linus Torvalds | ||
15 | */ | ||
16 | |||
17 | #ifndef _LINUX_EXT2_FS_H | ||
18 | #define _LINUX_EXT2_FS_H | ||
19 | |||
20 | #include "ext2_types.h" /* Changed from linux/types.h */ | ||
21 | |||
22 | /* | ||
23 | * Special inode numbers | ||
24 | */ | ||
25 | #define EXT2_BAD_INO 1 /* Bad blocks inode */ | ||
26 | #define EXT2_ROOT_INO 2 /* Root inode */ | ||
27 | #define EXT2_ACL_IDX_INO 3 /* ACL inode */ | ||
28 | #define EXT2_ACL_DATA_INO 4 /* ACL inode */ | ||
29 | #define EXT2_BOOT_LOADER_INO 5 /* Boot loader inode */ | ||
30 | #define EXT2_UNDEL_DIR_INO 6 /* Undelete directory inode */ | ||
31 | #define EXT2_RESIZE_INO 7 /* Reserved group descriptors inode */ | ||
32 | #define EXT2_JOURNAL_INO 8 /* Journal inode */ | ||
33 | |||
34 | /* First non-reserved inode for old ext2 filesystems */ | ||
35 | #define EXT2_GOOD_OLD_FIRST_INO 11 | ||
36 | |||
37 | /* | ||
38 | * The second extended file system magic number | ||
39 | */ | ||
40 | #define EXT2_SUPER_MAGIC 0xEF53 | ||
41 | |||
42 | /* Assume that user mode programs are passing in an ext2fs superblock, not | ||
43 | * a kernel struct super_block. This will allow us to call the feature-test | ||
44 | * macros from user land. */ | ||
45 | #define EXT2_SB(sb) (sb) | ||
46 | |||
47 | /* | ||
48 | * Maximal count of links to a file | ||
49 | */ | ||
50 | #define EXT2_LINK_MAX 32000 | ||
51 | |||
52 | /* | ||
53 | * Macro-instructions used to manage several block sizes | ||
54 | */ | ||
55 | #define EXT2_MIN_BLOCK_LOG_SIZE 10 /* 1024 */ | ||
56 | #define EXT2_MAX_BLOCK_LOG_SIZE 16 /* 65536 */ | ||
57 | #define EXT2_MIN_BLOCK_SIZE (1 << EXT2_MIN_BLOCK_LOG_SIZE) | ||
58 | #define EXT2_MAX_BLOCK_SIZE (1 << EXT2_MAX_BLOCK_LOG_SIZE) | ||
59 | #define EXT2_BLOCK_SIZE(s) (EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size) | ||
60 | #define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10) | ||
61 | #define EXT2_INODE_SIZE(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \ | ||
62 | EXT2_GOOD_OLD_INODE_SIZE : (s)->s_inode_size) | ||
63 | #define EXT2_FIRST_INO(s) (((s)->s_rev_level == EXT2_GOOD_OLD_REV) ? \ | ||
64 | EXT2_GOOD_OLD_FIRST_INO : (s)->s_first_ino) | ||
65 | #define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof(__u32)) | ||
66 | |||
67 | /* | ||
68 | * Macro-instructions used to manage fragments | ||
69 | */ | ||
70 | #define EXT2_MIN_FRAG_SIZE EXT2_MIN_BLOCK_SIZE | ||
71 | #define EXT2_MAX_FRAG_SIZE EXT2_MAX_BLOCK_SIZE | ||
72 | #define EXT2_MIN_FRAG_LOG_SIZE EXT2_MIN_BLOCK_LOG_SIZE | ||
73 | # define EXT2_FRAG_SIZE(s) (EXT2_MIN_FRAG_SIZE << (s)->s_log_frag_size) | ||
74 | # define EXT2_FRAGS_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / EXT2_FRAG_SIZE(s)) | ||
75 | |||
76 | /* | ||
77 | * ACL structures | ||
78 | */ | ||
79 | struct ext2_acl_header /* Header of Access Control Lists */ | ||
80 | { | ||
81 | __u32 aclh_size; | ||
82 | __u32 aclh_file_count; | ||
83 | __u32 aclh_acle_count; | ||
84 | __u32 aclh_first_acle; | ||
85 | }; | ||
86 | |||
87 | struct ext2_acl_entry /* Access Control List Entry */ | ||
88 | { | ||
89 | __u32 acle_size; | ||
90 | __u16 acle_perms; /* Access permissions */ | ||
91 | __u16 acle_type; /* Type of entry */ | ||
92 | __u16 acle_tag; /* User or group identity */ | ||
93 | __u16 acle_pad1; | ||
94 | __u32 acle_next; /* Pointer on next entry for the */ | ||
95 | /* same inode or on next free entry */ | ||
96 | }; | ||
97 | |||
98 | /* | ||
99 | * Structure of a blocks group descriptor | ||
100 | */ | ||
101 | struct ext2_group_desc | ||
102 | { | ||
103 | __u32 bg_block_bitmap; /* Blocks bitmap block */ | ||
104 | __u32 bg_inode_bitmap; /* Inodes bitmap block */ | ||
105 | __u32 bg_inode_table; /* Inodes table block */ | ||
106 | __u16 bg_free_blocks_count; /* Free blocks count */ | ||
107 | __u16 bg_free_inodes_count; /* Free inodes count */ | ||
108 | __u16 bg_used_dirs_count; /* Directories count */ | ||
109 | __u16 bg_pad; | ||
110 | __u32 bg_reserved[3]; | ||
111 | }; | ||
112 | |||
113 | /* | ||
114 | * Data structures used by the directory indexing feature | ||
115 | * | ||
116 | * Note: all of the multibyte integer fields are little endian. | ||
117 | */ | ||
118 | |||
119 | /* | ||
120 | * Note: dx_root_info is laid out so that if it should somehow get | ||
121 | * overlaid by a dirent the two low bits of the hash version will be | ||
122 | * zero. Therefore, the hash version mod 4 should never be 0. | ||
123 | * Sincerely, the paranoia department. | ||
124 | */ | ||
125 | struct ext2_dx_root_info { | ||
126 | __u32 reserved_zero; | ||
127 | __u8 hash_version; /* 0 now, 1 at release */ | ||
128 | __u8 info_length; /* 8 */ | ||
129 | __u8 indirect_levels; | ||
130 | __u8 unused_flags; | ||
131 | }; | ||
132 | |||
133 | #define EXT2_HASH_LEGACY 0 | ||
134 | #define EXT2_HASH_HALF_MD4 1 | ||
135 | #define EXT2_HASH_TEA 2 | ||
136 | |||
137 | #define EXT2_HASH_FLAG_INCOMPAT 0x1 | ||
138 | |||
139 | struct ext2_dx_entry { | ||
140 | __u32 hash; | ||
141 | __u32 block; | ||
142 | }; | ||
143 | |||
144 | struct ext2_dx_countlimit { | ||
145 | __u16 limit; | ||
146 | __u16 count; | ||
147 | }; | ||
148 | |||
149 | |||
150 | /* | ||
151 | * Macro-instructions used to manage group descriptors | ||
152 | */ | ||
153 | #define EXT2_BLOCKS_PER_GROUP(s) (EXT2_SB(s)->s_blocks_per_group) | ||
154 | #define EXT2_INODES_PER_GROUP(s) (EXT2_SB(s)->s_inodes_per_group) | ||
155 | #define EXT2_INODES_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s)/EXT2_INODE_SIZE(s)) | ||
156 | /* limits imposed by 16-bit value gd_free_{blocks,inode}_count */ | ||
157 | #define EXT2_MAX_BLOCKS_PER_GROUP(s) ((1 << 16) - 8) | ||
158 | #define EXT2_MAX_INODES_PER_GROUP(s) ((1 << 16) - EXT2_INODES_PER_BLOCK(s)) | ||
159 | #define EXT2_DESC_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_group_desc)) | ||
160 | |||
161 | /* | ||
162 | * Constants relative to the data blocks | ||
163 | */ | ||
164 | #define EXT2_NDIR_BLOCKS 12 | ||
165 | #define EXT2_IND_BLOCK EXT2_NDIR_BLOCKS | ||
166 | #define EXT2_DIND_BLOCK (EXT2_IND_BLOCK + 1) | ||
167 | #define EXT2_TIND_BLOCK (EXT2_DIND_BLOCK + 1) | ||
168 | #define EXT2_N_BLOCKS (EXT2_TIND_BLOCK + 1) | ||
169 | |||
170 | /* | ||
171 | * Inode flags | ||
172 | */ | ||
173 | #define EXT2_SECRM_FL 0x00000001 /* Secure deletion */ | ||
174 | #define EXT2_UNRM_FL 0x00000002 /* Undelete */ | ||
175 | #define EXT2_COMPR_FL 0x00000004 /* Compress file */ | ||
176 | #define EXT2_SYNC_FL 0x00000008 /* Synchronous updates */ | ||
177 | #define EXT2_IMMUTABLE_FL 0x00000010 /* Immutable file */ | ||
178 | #define EXT2_APPEND_FL 0x00000020 /* writes to file may only append */ | ||
179 | #define EXT2_NODUMP_FL 0x00000040 /* do not dump file */ | ||
180 | #define EXT2_NOATIME_FL 0x00000080 /* do not update atime */ | ||
181 | /* Reserved for compression usage... */ | ||
182 | #define EXT2_DIRTY_FL 0x00000100 | ||
183 | #define EXT2_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */ | ||
184 | #define EXT2_NOCOMPR_FL 0x00000400 /* Access raw compressed data */ | ||
185 | #define EXT2_ECOMPR_FL 0x00000800 /* Compression error */ | ||
186 | /* End compression flags --- maybe not all used */ | ||
187 | #define EXT2_BTREE_FL 0x00001000 /* btree format dir */ | ||
188 | #define EXT2_INDEX_FL 0x00001000 /* hash-indexed directory */ | ||
189 | #define EXT2_IMAGIC_FL 0x00002000 | ||
190 | #define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */ | ||
191 | #define EXT2_NOTAIL_FL 0x00008000 /* file tail should not be merged */ | ||
192 | #define EXT2_DIRSYNC_FL 0x00010000 /* Synchronous directory modifications */ | ||
193 | #define EXT2_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/ | ||
194 | #define EXT3_EXTENTS_FL 0x00080000 /* Inode uses extents */ | ||
195 | #define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */ | ||
196 | |||
197 | #define EXT2_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */ | ||
198 | #define EXT2_FL_USER_MODIFIABLE 0x000080FF /* User modifiable flags */ | ||
199 | |||
200 | /* | ||
201 | * ioctl commands | ||
202 | */ | ||
203 | #define EXT2_IOC_GETFLAGS _IOR('f', 1, long) | ||
204 | #define EXT2_IOC_SETFLAGS _IOW('f', 2, long) | ||
205 | #define EXT2_IOC_GETVERSION _IOR('v', 1, long) | ||
206 | #define EXT2_IOC_SETVERSION _IOW('v', 2, long) | ||
207 | |||
208 | /* | ||
209 | * Structure of an inode on the disk | ||
210 | */ | ||
211 | struct ext2_inode { | ||
212 | __u16 i_mode; /* File mode */ | ||
213 | __u16 i_uid; /* Low 16 bits of Owner Uid */ | ||
214 | __u32 i_size; /* Size in bytes */ | ||
215 | __u32 i_atime; /* Access time */ | ||
216 | __u32 i_ctime; /* Creation time */ | ||
217 | __u32 i_mtime; /* Modification time */ | ||
218 | __u32 i_dtime; /* Deletion Time */ | ||
219 | __u16 i_gid; /* Low 16 bits of Group Id */ | ||
220 | __u16 i_links_count; /* Links count */ | ||
221 | __u32 i_blocks; /* Blocks count */ | ||
222 | __u32 i_flags; /* File flags */ | ||
223 | union { | ||
224 | struct { | ||
225 | __u32 l_i_reserved1; | ||
226 | } linux1; | ||
227 | struct { | ||
228 | __u32 h_i_translator; | ||
229 | } hurd1; | ||
230 | struct { | ||
231 | __u32 m_i_reserved1; | ||
232 | } masix1; | ||
233 | } osd1; /* OS dependent 1 */ | ||
234 | __u32 i_block[EXT2_N_BLOCKS];/* Pointers to blocks */ | ||
235 | __u32 i_generation; /* File version (for NFS) */ | ||
236 | __u32 i_file_acl; /* File ACL */ | ||
237 | __u32 i_dir_acl; /* Directory ACL */ | ||
238 | __u32 i_faddr; /* Fragment address */ | ||
239 | union { | ||
240 | struct { | ||
241 | __u8 l_i_frag; /* Fragment number */ | ||
242 | __u8 l_i_fsize; /* Fragment size */ | ||
243 | __u16 i_pad1; | ||
244 | __u16 l_i_uid_high; /* these 2 fields */ | ||
245 | __u16 l_i_gid_high; /* were reserved2[0] */ | ||
246 | __u32 l_i_reserved2; | ||
247 | } linux2; | ||
248 | struct { | ||
249 | __u8 h_i_frag; /* Fragment number */ | ||
250 | __u8 h_i_fsize; /* Fragment size */ | ||
251 | __u16 h_i_mode_high; | ||
252 | __u16 h_i_uid_high; | ||
253 | __u16 h_i_gid_high; | ||
254 | __u32 h_i_author; | ||
255 | } hurd2; | ||
256 | struct { | ||
257 | __u8 m_i_frag; /* Fragment number */ | ||
258 | __u8 m_i_fsize; /* Fragment size */ | ||
259 | __u16 m_pad1; | ||
260 | __u32 m_i_reserved2[2]; | ||
261 | } masix2; | ||
262 | } osd2; /* OS dependent 2 */ | ||
263 | }; | ||
264 | |||
265 | /* | ||
266 | * Permanent part of an large inode on the disk | ||
267 | */ | ||
268 | struct ext2_inode_large { | ||
269 | __u16 i_mode; /* File mode */ | ||
270 | __u16 i_uid; /* Low 16 bits of Owner Uid */ | ||
271 | __u32 i_size; /* Size in bytes */ | ||
272 | __u32 i_atime; /* Access time */ | ||
273 | __u32 i_ctime; /* Creation time */ | ||
274 | __u32 i_mtime; /* Modification time */ | ||
275 | __u32 i_dtime; /* Deletion Time */ | ||
276 | __u16 i_gid; /* Low 16 bits of Group Id */ | ||
277 | __u16 i_links_count; /* Links count */ | ||
278 | __u32 i_blocks; /* Blocks count */ | ||
279 | __u32 i_flags; /* File flags */ | ||
280 | union { | ||
281 | struct { | ||
282 | __u32 l_i_reserved1; | ||
283 | } linux1; | ||
284 | struct { | ||
285 | __u32 h_i_translator; | ||
286 | } hurd1; | ||
287 | struct { | ||
288 | __u32 m_i_reserved1; | ||
289 | } masix1; | ||
290 | } osd1; /* OS dependent 1 */ | ||
291 | __u32 i_block[EXT2_N_BLOCKS];/* Pointers to blocks */ | ||
292 | __u32 i_generation; /* File version (for NFS) */ | ||
293 | __u32 i_file_acl; /* File ACL */ | ||
294 | __u32 i_dir_acl; /* Directory ACL */ | ||
295 | __u32 i_faddr; /* Fragment address */ | ||
296 | union { | ||
297 | struct { | ||
298 | __u8 l_i_frag; /* Fragment number */ | ||
299 | __u8 l_i_fsize; /* Fragment size */ | ||
300 | __u16 i_pad1; | ||
301 | __u16 l_i_uid_high; /* these 2 fields */ | ||
302 | __u16 l_i_gid_high; /* were reserved2[0] */ | ||
303 | __u32 l_i_reserved2; | ||
304 | } linux2; | ||
305 | struct { | ||
306 | __u8 h_i_frag; /* Fragment number */ | ||
307 | __u8 h_i_fsize; /* Fragment size */ | ||
308 | __u16 h_i_mode_high; | ||
309 | __u16 h_i_uid_high; | ||
310 | __u16 h_i_gid_high; | ||
311 | __u32 h_i_author; | ||
312 | } hurd2; | ||
313 | struct { | ||
314 | __u8 m_i_frag; /* Fragment number */ | ||
315 | __u8 m_i_fsize; /* Fragment size */ | ||
316 | __u16 m_pad1; | ||
317 | __u32 m_i_reserved2[2]; | ||
318 | } masix2; | ||
319 | } osd2; /* OS dependent 2 */ | ||
320 | __u16 i_extra_isize; | ||
321 | __u16 i_pad1; | ||
322 | }; | ||
323 | |||
324 | #define i_size_high i_dir_acl | ||
325 | |||
326 | /* | ||
327 | * File system states | ||
328 | */ | ||
329 | #define EXT2_VALID_FS 0x0001 /* Unmounted cleanly */ | ||
330 | #define EXT2_ERROR_FS 0x0002 /* Errors detected */ | ||
331 | |||
332 | /* | ||
333 | * Mount flags | ||
334 | */ | ||
335 | #define EXT2_MOUNT_CHECK 0x0001 /* Do mount-time checks */ | ||
336 | #define EXT2_MOUNT_GRPID 0x0004 /* Create files with directory's group */ | ||
337 | #define EXT2_MOUNT_DEBUG 0x0008 /* Some debugging messages */ | ||
338 | #define EXT2_MOUNT_ERRORS_CONT 0x0010 /* Continue on errors */ | ||
339 | #define EXT2_MOUNT_ERRORS_RO 0x0020 /* Remount fs ro on errors */ | ||
340 | #define EXT2_MOUNT_ERRORS_PANIC 0x0040 /* Panic on errors */ | ||
341 | #define EXT2_MOUNT_MINIX_DF 0x0080 /* Mimics the Minix statfs */ | ||
342 | #define EXT2_MOUNT_NO_UID32 0x0200 /* Disable 32-bit UIDs */ | ||
343 | |||
344 | #define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt | ||
345 | #define set_opt(o, opt) o |= EXT2_MOUNT_##opt | ||
346 | #define test_opt(sb, opt) (EXT2_SB(sb)->s_mount_opt & \ | ||
347 | EXT2_MOUNT_##opt) | ||
348 | /* | ||
349 | * Maximal mount counts between two filesystem checks | ||
350 | */ | ||
351 | #define EXT2_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */ | ||
352 | #define EXT2_DFL_CHECKINTERVAL 0 /* Don't use interval check */ | ||
353 | |||
354 | /* | ||
355 | * Behaviour when detecting errors | ||
356 | */ | ||
357 | #define EXT2_ERRORS_CONTINUE 1 /* Continue execution */ | ||
358 | #define EXT2_ERRORS_RO 2 /* Remount fs read-only */ | ||
359 | #define EXT2_ERRORS_PANIC 3 /* Panic */ | ||
360 | #define EXT2_ERRORS_DEFAULT EXT2_ERRORS_CONTINUE | ||
361 | |||
362 | /* | ||
363 | * Structure of the super block | ||
364 | */ | ||
365 | struct ext2_super_block { | ||
366 | __u32 s_inodes_count; /* Inodes count */ | ||
367 | __u32 s_blocks_count; /* Blocks count */ | ||
368 | __u32 s_r_blocks_count; /* Reserved blocks count */ | ||
369 | __u32 s_free_blocks_count; /* Free blocks count */ | ||
370 | __u32 s_free_inodes_count; /* Free inodes count */ | ||
371 | __u32 s_first_data_block; /* First Data Block */ | ||
372 | __u32 s_log_block_size; /* Block size */ | ||
373 | __s32 s_log_frag_size; /* Fragment size */ | ||
374 | __u32 s_blocks_per_group; /* # Blocks per group */ | ||
375 | __u32 s_frags_per_group; /* # Fragments per group */ | ||
376 | __u32 s_inodes_per_group; /* # Inodes per group */ | ||
377 | __u32 s_mtime; /* Mount time */ | ||
378 | __u32 s_wtime; /* Write time */ | ||
379 | __u16 s_mnt_count; /* Mount count */ | ||
380 | __s16 s_max_mnt_count; /* Maximal mount count */ | ||
381 | __u16 s_magic; /* Magic signature */ | ||
382 | __u16 s_state; /* File system state */ | ||
383 | __u16 s_errors; /* Behaviour when detecting errors */ | ||
384 | __u16 s_minor_rev_level; /* minor revision level */ | ||
385 | __u32 s_lastcheck; /* time of last check */ | ||
386 | __u32 s_checkinterval; /* max. time between checks */ | ||
387 | __u32 s_creator_os; /* OS */ | ||
388 | __u32 s_rev_level; /* Revision level */ | ||
389 | __u16 s_def_resuid; /* Default uid for reserved blocks */ | ||
390 | __u16 s_def_resgid; /* Default gid for reserved blocks */ | ||
391 | /* | ||
392 | * These fields are for EXT2_DYNAMIC_REV superblocks only. | ||
393 | * | ||
394 | * Note: the difference between the compatible feature set and | ||
395 | * the incompatible feature set is that if there is a bit set | ||
396 | * in the incompatible feature set that the kernel doesn't | ||
397 | * know about, it should refuse to mount the filesystem. | ||
398 | * | ||
399 | * e2fsck's requirements are more strict; if it doesn't know | ||
400 | * about a feature in either the compatible or incompatible | ||
401 | * feature set, it must abort and not try to meddle with | ||
402 | * things it doesn't understand... | ||
403 | */ | ||
404 | __u32 s_first_ino; /* First non-reserved inode */ | ||
405 | __u16 s_inode_size; /* size of inode structure */ | ||
406 | __u16 s_block_group_nr; /* block group # of this superblock */ | ||
407 | __u32 s_feature_compat; /* compatible feature set */ | ||
408 | __u32 s_feature_incompat; /* incompatible feature set */ | ||
409 | __u32 s_feature_ro_compat; /* readonly-compatible feature set */ | ||
410 | __u8 s_uuid[16]; /* 128-bit uuid for volume */ | ||
411 | char s_volume_name[16]; /* volume name */ | ||
412 | char s_last_mounted[64]; /* directory where last mounted */ | ||
413 | __u32 s_algorithm_usage_bitmap; /* For compression */ | ||
414 | /* | ||
415 | * Performance hints. Directory preallocation should only | ||
416 | * happen if the EXT2_FEATURE_COMPAT_DIR_PREALLOC flag is on. | ||
417 | */ | ||
418 | __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/ | ||
419 | __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */ | ||
420 | __u16 s_reserved_gdt_blocks; /* Per group table for online growth */ | ||
421 | /* | ||
422 | * Journaling support valid if EXT2_FEATURE_COMPAT_HAS_JOURNAL set. | ||
423 | */ | ||
424 | __u8 s_journal_uuid[16]; /* uuid of journal superblock */ | ||
425 | __u32 s_journal_inum; /* inode number of journal file */ | ||
426 | __u32 s_journal_dev; /* device number of journal file */ | ||
427 | __u32 s_last_orphan; /* start of list of inodes to delete */ | ||
428 | __u32 s_hash_seed[4]; /* HTREE hash seed */ | ||
429 | __u8 s_def_hash_version; /* Default hash version to use */ | ||
430 | __u8 s_jnl_backup_type; /* Default type of journal backup */ | ||
431 | __u16 s_reserved_word_pad; | ||
432 | __u32 s_default_mount_opts; | ||
433 | __u32 s_first_meta_bg; /* First metablock group */ | ||
434 | __u32 s_mkfs_time; /* When the filesystem was created */ | ||
435 | __u32 s_jnl_blocks[17]; /* Backup of the journal inode */ | ||
436 | __u32 s_reserved[172]; /* Padding to the end of the block */ | ||
437 | }; | ||
438 | |||
439 | /* | ||
440 | * Codes for operating systems | ||
441 | */ | ||
442 | #define EXT2_OS_LINUX 0 | ||
443 | #define EXT2_OS_HURD 1 | ||
444 | #define EXT2_OS_MASIX 2 | ||
445 | #define EXT2_OS_FREEBSD 3 | ||
446 | #define EXT2_OS_LITES 4 | ||
447 | |||
448 | /* | ||
449 | * Revision levels | ||
450 | */ | ||
451 | #define EXT2_GOOD_OLD_REV 0 /* The good old (original) format */ | ||
452 | #define EXT2_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */ | ||
453 | |||
454 | #define EXT2_CURRENT_REV EXT2_GOOD_OLD_REV | ||
455 | #define EXT2_MAX_SUPP_REV EXT2_DYNAMIC_REV | ||
456 | |||
457 | #define EXT2_GOOD_OLD_INODE_SIZE 128 | ||
458 | |||
459 | /* | ||
460 | * Journal inode backup types | ||
461 | */ | ||
462 | #define EXT3_JNL_BACKUP_BLOCKS 1 | ||
463 | |||
464 | /* | ||
465 | * Feature set definitions | ||
466 | */ | ||
467 | |||
468 | #define EXT2_HAS_COMPAT_FEATURE(sb,mask) \ | ||
469 | ( EXT2_SB(sb)->s_feature_compat & (mask) ) | ||
470 | #define EXT2_HAS_RO_COMPAT_FEATURE(sb,mask) \ | ||
471 | ( EXT2_SB(sb)->s_feature_ro_compat & (mask) ) | ||
472 | #define EXT2_HAS_INCOMPAT_FEATURE(sb,mask) \ | ||
473 | ( EXT2_SB(sb)->s_feature_incompat & (mask) ) | ||
474 | |||
475 | #define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001 | ||
476 | #define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002 | ||
477 | #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 | ||
478 | #define EXT2_FEATURE_COMPAT_EXT_ATTR 0x0008 | ||
479 | #define EXT2_FEATURE_COMPAT_RESIZE_INODE 0x0010 | ||
480 | #define EXT2_FEATURE_COMPAT_DIR_INDEX 0x0020 | ||
481 | |||
482 | #define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 | ||
483 | #define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 | ||
484 | /* #define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 not used */ | ||
485 | |||
486 | #define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001 | ||
487 | #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002 | ||
488 | #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */ | ||
489 | #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */ | ||
490 | #define EXT2_FEATURE_INCOMPAT_META_BG 0x0010 | ||
491 | #define EXT3_FEATURE_INCOMPAT_EXTENTS 0x0040 | ||
492 | |||
493 | |||
494 | #define EXT2_FEATURE_COMPAT_SUPP 0 | ||
495 | #define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE) | ||
496 | #define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \ | ||
497 | EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ | ||
498 | EXT2_FEATURE_RO_COMPAT_BTREE_DIR) | ||
499 | |||
500 | /* | ||
501 | * Default values for user and/or group using reserved blocks | ||
502 | */ | ||
503 | #define EXT2_DEF_RESUID 0 | ||
504 | #define EXT2_DEF_RESGID 0 | ||
505 | |||
506 | /* | ||
507 | * Default mount options | ||
508 | */ | ||
509 | #define EXT2_DEFM_DEBUG 0x0001 | ||
510 | #define EXT2_DEFM_BSDGROUPS 0x0002 | ||
511 | #define EXT2_DEFM_XATTR_USER 0x0004 | ||
512 | #define EXT2_DEFM_ACL 0x0008 | ||
513 | #define EXT2_DEFM_UID16 0x0010 | ||
514 | #define EXT3_DEFM_JMODE 0x0060 | ||
515 | #define EXT3_DEFM_JMODE_DATA 0x0020 | ||
516 | #define EXT3_DEFM_JMODE_ORDERED 0x0040 | ||
517 | #define EXT3_DEFM_JMODE_WBACK 0x0060 | ||
518 | |||
519 | /* | ||
520 | * Structure of a directory entry | ||
521 | */ | ||
522 | #define EXT2_NAME_LEN 255 | ||
523 | |||
524 | struct ext2_dir_entry { | ||
525 | __u32 inode; /* Inode number */ | ||
526 | __u16 rec_len; /* Directory entry length */ | ||
527 | __u16 name_len; /* Name length */ | ||
528 | char name[EXT2_NAME_LEN]; /* File name */ | ||
529 | }; | ||
530 | |||
531 | /* | ||
532 | * The new version of the directory entry. Since EXT2 structures are | ||
533 | * stored in intel byte order, and the name_len field could never be | ||
534 | * bigger than 255 chars, it's safe to reclaim the extra byte for the | ||
535 | * file_type field. | ||
536 | */ | ||
537 | struct ext2_dir_entry_2 { | ||
538 | __u32 inode; /* Inode number */ | ||
539 | __u16 rec_len; /* Directory entry length */ | ||
540 | __u8 name_len; /* Name length */ | ||
541 | __u8 file_type; | ||
542 | char name[EXT2_NAME_LEN]; /* File name */ | ||
543 | }; | ||
544 | |||
545 | /* | ||
546 | * Ext2 directory file types. Only the low 3 bits are used. The | ||
547 | * other bits are reserved for now. | ||
548 | */ | ||
549 | #define EXT2_FT_UNKNOWN 0 | ||
550 | #define EXT2_FT_REG_FILE 1 | ||
551 | #define EXT2_FT_DIR 2 | ||
552 | #define EXT2_FT_CHRDEV 3 | ||
553 | #define EXT2_FT_BLKDEV 4 | ||
554 | #define EXT2_FT_FIFO 5 | ||
555 | #define EXT2_FT_SOCK 6 | ||
556 | #define EXT2_FT_SYMLINK 7 | ||
557 | |||
558 | #define EXT2_FT_MAX 8 | ||
559 | |||
560 | /* | ||
561 | * EXT2_DIR_PAD defines the directory entries boundaries | ||
562 | * | ||
563 | * NOTE: It must be a multiple of 4 | ||
564 | */ | ||
565 | #define EXT2_DIR_PAD 4 | ||
566 | #define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1) | ||
567 | #define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \ | ||
568 | ~EXT2_DIR_ROUND) | ||
569 | |||
570 | #endif /* _LINUX_EXT2_FS_H */ | ||