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1 | /* |
2 | * linux/include/linux/ext3_fs.h |
3 | * |
4 | * Copyright (C) 1992, 1993, 1994, 1995 |
5 | * Remy Card (card@masi.ibp.fr) |
6 | * Laboratoire MASI - Institut Blaise Pascal |
7 | * Universite Pierre et Marie Curie (Paris VI) |
8 | * |
9 | * from |
10 | * |
11 | * linux/include/linux/minix_fs.h |
12 | * |
13 | * Copyright (C) 1991, 1992 Linus Torvalds |
14 | */ |
15 | |
16 | #ifndef _LINUX_EXT3_FS_H |
17 | #define _LINUX_EXT3_FS_H |
18 | |
19 | #include <linux/types.h> |
20 | #include <linux/magic.h> |
21 | |
22 | /* |
23 | * The second extended filesystem constants/structures |
24 | */ |
25 | |
26 | /* |
27 | * Define EXT3FS_DEBUG to produce debug messages |
28 | */ |
29 | #undef EXT3FS_DEBUG |
30 | |
31 | /* |
32 | * Define EXT3_RESERVATION to reserve data blocks for expanding files |
33 | */ |
34 | #define EXT3_DEFAULT_RESERVE_BLOCKS 8 |
35 | /*max window size: 1024(direct blocks) + 3([t,d]indirect blocks) */ |
36 | #define EXT3_MAX_RESERVE_BLOCKS 1027 |
37 | #define EXT3_RESERVE_WINDOW_NOT_ALLOCATED 0 |
38 | |
39 | /* |
40 | * Debug code |
41 | */ |
42 | #ifdef EXT3FS_DEBUG |
43 | #define ext3_debug(f, a...) \ |
44 | do { \ |
45 | printk (KERN_DEBUG "EXT3-fs DEBUG (%s, %d): %s:", \ |
46 | __FILE__, __LINE__, __func__); \ |
47 | printk (KERN_DEBUG f, ## a); \ |
48 | } while (0) |
49 | #else |
50 | #define ext3_debug(f, a...) do {} while (0) |
51 | #endif |
52 | |
53 | /* |
54 | * Special inodes numbers |
55 | */ |
56 | #define EXT3_BAD_INO 1 /* Bad blocks inode */ |
57 | #define EXT3_ROOT_INO 2 /* Root inode */ |
58 | #define EXT3_BOOT_LOADER_INO 5 /* Boot loader inode */ |
59 | #define EXT3_UNDEL_DIR_INO 6 /* Undelete directory inode */ |
60 | #define EXT3_RESIZE_INO 7 /* Reserved group descriptors inode */ |
61 | #define EXT3_JOURNAL_INO 8 /* Journal inode */ |
62 | |
63 | /* First non-reserved inode for old ext3 filesystems */ |
64 | #define EXT3_GOOD_OLD_FIRST_INO 11 |
65 | |
66 | /* |
67 | * Maximal count of links to a file |
68 | */ |
69 | #define EXT3_LINK_MAX 32000 |
70 | |
71 | /* |
72 | * Macro-instructions used to manage several block sizes |
73 | */ |
74 | #define EXT3_MIN_BLOCK_SIZE 1024 |
75 | #define EXT3_MAX_BLOCK_SIZE 65536 |
76 | #define EXT3_MIN_BLOCK_LOG_SIZE 10 |
77 | #ifdef __KERNEL__ |
78 | # define EXT3_BLOCK_SIZE(s) ((s)->s_blocksize) |
79 | #else |
80 | # define EXT3_BLOCK_SIZE(s) (EXT3_MIN_BLOCK_SIZE << (s)->s_log_block_size) |
81 | #endif |
82 | #define EXT3_ADDR_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (__u32)) |
83 | #ifdef __KERNEL__ |
84 | # define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits) |
85 | #else |
86 | # define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10) |
87 | #endif |
88 | #ifdef __KERNEL__ |
89 | #define EXT3_ADDR_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_addr_per_block_bits) |
90 | #define EXT3_INODE_SIZE(s) (EXT3_SB(s)->s_inode_size) |
91 | #define EXT3_FIRST_INO(s) (EXT3_SB(s)->s_first_ino) |
92 | #else |
93 | #define EXT3_INODE_SIZE(s) (((s)->s_rev_level == EXT3_GOOD_OLD_REV) ? \ |
94 | EXT3_GOOD_OLD_INODE_SIZE : \ |
95 | (s)->s_inode_size) |
96 | #define EXT3_FIRST_INO(s) (((s)->s_rev_level == EXT3_GOOD_OLD_REV) ? \ |
97 | EXT3_GOOD_OLD_FIRST_INO : \ |
98 | (s)->s_first_ino) |
99 | #endif |
100 | |
101 | /* |
102 | * Macro-instructions used to manage fragments |
103 | */ |
104 | #define EXT3_MIN_FRAG_SIZE 1024 |
105 | #define EXT3_MAX_FRAG_SIZE 4096 |
106 | #define EXT3_MIN_FRAG_LOG_SIZE 10 |
107 | #ifdef __KERNEL__ |
108 | # define EXT3_FRAG_SIZE(s) (EXT3_SB(s)->s_frag_size) |
109 | # define EXT3_FRAGS_PER_BLOCK(s) (EXT3_SB(s)->s_frags_per_block) |
110 | #else |
111 | # define EXT3_FRAG_SIZE(s) (EXT3_MIN_FRAG_SIZE << (s)->s_log_frag_size) |
112 | # define EXT3_FRAGS_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / EXT3_FRAG_SIZE(s)) |
113 | #endif |
114 | |
115 | /* |
116 | * Structure of a blocks group descriptor |
117 | */ |
118 | struct ext3_group_desc |
119 | { |
120 | __le32 bg_block_bitmap; /* Blocks bitmap block */ |
121 | __le32 bg_inode_bitmap; /* Inodes bitmap block */ |
122 | __le32 bg_inode_table; /* Inodes table block */ |
123 | __le16 bg_free_blocks_count; /* Free blocks count */ |
124 | __le16 bg_free_inodes_count; /* Free inodes count */ |
125 | __le16 bg_used_dirs_count; /* Directories count */ |
126 | __u16 bg_pad; |
127 | __le32 bg_reserved[3]; |
128 | }; |
129 | |
130 | /* |
131 | * Macro-instructions used to manage group descriptors |
132 | */ |
133 | #ifdef __KERNEL__ |
134 | # define EXT3_BLOCKS_PER_GROUP(s) (EXT3_SB(s)->s_blocks_per_group) |
135 | # define EXT3_DESC_PER_BLOCK(s) (EXT3_SB(s)->s_desc_per_block) |
136 | # define EXT3_INODES_PER_GROUP(s) (EXT3_SB(s)->s_inodes_per_group) |
137 | # define EXT3_DESC_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_desc_per_block_bits) |
138 | #else |
139 | # define EXT3_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group) |
140 | # define EXT3_DESC_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (struct ext3_group_desc)) |
141 | # define EXT3_INODES_PER_GROUP(s) ((s)->s_inodes_per_group) |
142 | #endif |
143 | |
144 | /* |
145 | * Constants relative to the data blocks |
146 | */ |
147 | #define EXT3_NDIR_BLOCKS 12 |
148 | #define EXT3_IND_BLOCK EXT3_NDIR_BLOCKS |
149 | #define EXT3_DIND_BLOCK (EXT3_IND_BLOCK + 1) |
150 | #define EXT3_TIND_BLOCK (EXT3_DIND_BLOCK + 1) |
151 | #define EXT3_N_BLOCKS (EXT3_TIND_BLOCK + 1) |
152 | |
153 | /* |
154 | * Inode flags |
155 | */ |
156 | #define EXT3_SECRM_FL 0x00000001 /* Secure deletion */ |
157 | #define EXT3_UNRM_FL 0x00000002 /* Undelete */ |
158 | #define EXT3_COMPR_FL 0x00000004 /* Compress file */ |
159 | #define EXT3_SYNC_FL 0x00000008 /* Synchronous updates */ |
160 | #define EXT3_IMMUTABLE_FL 0x00000010 /* Immutable file */ |
161 | #define EXT3_APPEND_FL 0x00000020 /* writes to file may only append */ |
162 | #define EXT3_NODUMP_FL 0x00000040 /* do not dump file */ |
163 | #define EXT3_NOATIME_FL 0x00000080 /* do not update atime */ |
164 | /* Reserved for compression usage... */ |
165 | #define EXT3_DIRTY_FL 0x00000100 |
166 | #define EXT3_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */ |
167 | #define EXT3_NOCOMPR_FL 0x00000400 /* Don't compress */ |
168 | #define EXT3_ECOMPR_FL 0x00000800 /* Compression error */ |
169 | /* End compression flags --- maybe not all used */ |
170 | #define EXT3_INDEX_FL 0x00001000 /* hash-indexed directory */ |
171 | #define EXT3_IMAGIC_FL 0x00002000 /* AFS directory */ |
172 | #define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */ |
173 | #define EXT3_NOTAIL_FL 0x00008000 /* file tail should not be merged */ |
174 | #define EXT3_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */ |
175 | #define EXT3_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/ |
176 | #define EXT3_RESERVED_FL 0x80000000 /* reserved for ext3 lib */ |
177 | |
178 | #define EXT3_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */ |
179 | #define EXT3_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */ |
180 | |
181 | /* Flags that should be inherited by new inodes from their parent. */ |
182 | #define EXT3_FL_INHERITED (EXT3_SECRM_FL | EXT3_UNRM_FL | EXT3_COMPR_FL |\ |
183 | EXT3_SYNC_FL | EXT3_IMMUTABLE_FL | EXT3_APPEND_FL |\ |
184 | EXT3_NODUMP_FL | EXT3_NOATIME_FL | EXT3_COMPRBLK_FL|\ |
185 | EXT3_NOCOMPR_FL | EXT3_JOURNAL_DATA_FL |\ |
186 | EXT3_NOTAIL_FL | EXT3_DIRSYNC_FL) |
187 | |
188 | /* Flags that are appropriate for regular files (all but dir-specific ones). */ |
189 | #define EXT3_REG_FLMASK (~(EXT3_DIRSYNC_FL | EXT3_TOPDIR_FL)) |
190 | |
191 | /* Flags that are appropriate for non-directories/regular files. */ |
192 | #define EXT3_OTHER_FLMASK (EXT3_NODUMP_FL | EXT3_NOATIME_FL) |
193 | |
194 | /* Mask out flags that are inappropriate for the given type of inode. */ |
195 | static inline __u32 ext3_mask_flags(umode_t mode, __u32 flags) |
196 | { |
197 | if (S_ISDIR(mode)) |
198 | return flags; |
199 | else if (S_ISREG(mode)) |
200 | return flags & EXT3_REG_FLMASK; |
201 | else |
202 | return flags & EXT3_OTHER_FLMASK; |
203 | } |
204 | |
205 | /* Used to pass group descriptor data when online resize is done */ |
206 | struct ext3_new_group_input { |
207 | __u32 group; /* Group number for this data */ |
208 | __u32 block_bitmap; /* Absolute block number of block bitmap */ |
209 | __u32 inode_bitmap; /* Absolute block number of inode bitmap */ |
210 | __u32 inode_table; /* Absolute block number of inode table start */ |
211 | __u32 blocks_count; /* Total number of blocks in this group */ |
212 | __u16 reserved_blocks; /* Number of reserved blocks in this group */ |
213 | __u16 unused; |
214 | }; |
215 | |
216 | /* The struct ext3_new_group_input in kernel space, with free_blocks_count */ |
217 | struct ext3_new_group_data { |
218 | __u32 group; |
219 | __u32 block_bitmap; |
220 | __u32 inode_bitmap; |
221 | __u32 inode_table; |
222 | __u32 blocks_count; |
223 | __u16 reserved_blocks; |
224 | __u16 unused; |
225 | __u32 free_blocks_count; |
226 | }; |
227 | |
228 | |
229 | /* |
230 | * ioctl commands |
231 | */ |
232 | #define EXT3_IOC_GETFLAGS FS_IOC_GETFLAGS |
233 | #define EXT3_IOC_SETFLAGS FS_IOC_SETFLAGS |
234 | #define EXT3_IOC_GETVERSION _IOR('f', 3, long) |
235 | #define EXT3_IOC_SETVERSION _IOW('f', 4, long) |
236 | #define EXT3_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long) |
237 | #define EXT3_IOC_GROUP_ADD _IOW('f', 8,struct ext3_new_group_input) |
238 | #define EXT3_IOC_GETVERSION_OLD FS_IOC_GETVERSION |
239 | #define EXT3_IOC_SETVERSION_OLD FS_IOC_SETVERSION |
240 | #ifdef CONFIG_JBD_DEBUG |
241 | #define EXT3_IOC_WAIT_FOR_READONLY _IOR('f', 99, long) |
242 | #endif |
243 | #define EXT3_IOC_GETRSVSZ _IOR('f', 5, long) |
244 | #define EXT3_IOC_SETRSVSZ _IOW('f', 6, long) |
245 | |
246 | /* |
247 | * ioctl commands in 32 bit emulation |
248 | */ |
249 | #define EXT3_IOC32_GETFLAGS FS_IOC32_GETFLAGS |
250 | #define EXT3_IOC32_SETFLAGS FS_IOC32_SETFLAGS |
251 | #define EXT3_IOC32_GETVERSION _IOR('f', 3, int) |
252 | #define EXT3_IOC32_SETVERSION _IOW('f', 4, int) |
253 | #define EXT3_IOC32_GETRSVSZ _IOR('f', 5, int) |
254 | #define EXT3_IOC32_SETRSVSZ _IOW('f', 6, int) |
255 | #define EXT3_IOC32_GROUP_EXTEND _IOW('f', 7, unsigned int) |
256 | #ifdef CONFIG_JBD_DEBUG |
257 | #define EXT3_IOC32_WAIT_FOR_READONLY _IOR('f', 99, int) |
258 | #endif |
259 | #define EXT3_IOC32_GETVERSION_OLD FS_IOC32_GETVERSION |
260 | #define EXT3_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION |
261 | |
262 | |
263 | /* |
264 | * Mount options |
265 | */ |
266 | struct ext3_mount_options { |
267 | unsigned long s_mount_opt; |
268 | uid_t s_resuid; |
269 | gid_t s_resgid; |
270 | unsigned long s_commit_interval; |
271 | #ifdef CONFIG_QUOTA |
272 | int s_jquota_fmt; |
273 | char *s_qf_names[MAXQUOTAS]; |
274 | #endif |
275 | }; |
276 | |
277 | /* |
278 | * Structure of an inode on the disk |
279 | */ |
280 | struct ext3_inode { |
281 | __le16 i_mode; /* File mode */ |
282 | __le16 i_uid; /* Low 16 bits of Owner Uid */ |
283 | __le32 i_size; /* Size in bytes */ |
284 | __le32 i_atime; /* Access time */ |
285 | __le32 i_ctime; /* Creation time */ |
286 | __le32 i_mtime; /* Modification time */ |
287 | __le32 i_dtime; /* Deletion Time */ |
288 | __le16 i_gid; /* Low 16 bits of Group Id */ |
289 | __le16 i_links_count; /* Links count */ |
290 | __le32 i_blocks; /* Blocks count */ |
291 | __le32 i_flags; /* File flags */ |
292 | union { |
293 | struct { |
294 | __u32 l_i_reserved1; |
295 | } linux1; |
296 | struct { |
297 | __u32 h_i_translator; |
298 | } hurd1; |
299 | struct { |
300 | __u32 m_i_reserved1; |
301 | } masix1; |
302 | } osd1; /* OS dependent 1 */ |
303 | __le32 i_block[EXT3_N_BLOCKS];/* Pointers to blocks */ |
304 | __le32 i_generation; /* File version (for NFS) */ |
305 | __le32 i_file_acl; /* File ACL */ |
306 | __le32 i_dir_acl; /* Directory ACL */ |
307 | __le32 i_faddr; /* Fragment address */ |
308 | union { |
309 | struct { |
310 | __u8 l_i_frag; /* Fragment number */ |
311 | __u8 l_i_fsize; /* Fragment size */ |
312 | __u16 i_pad1; |
313 | __le16 l_i_uid_high; /* these 2 fields */ |
314 | __le16 l_i_gid_high; /* were reserved2[0] */ |
315 | __u32 l_i_reserved2; |
316 | } linux2; |
317 | struct { |
318 | __u8 h_i_frag; /* Fragment number */ |
319 | __u8 h_i_fsize; /* Fragment size */ |
320 | __u16 h_i_mode_high; |
321 | __u16 h_i_uid_high; |
322 | __u16 h_i_gid_high; |
323 | __u32 h_i_author; |
324 | } hurd2; |
325 | struct { |
326 | __u8 m_i_frag; /* Fragment number */ |
327 | __u8 m_i_fsize; /* Fragment size */ |
328 | __u16 m_pad1; |
329 | __u32 m_i_reserved2[2]; |
330 | } masix2; |
331 | } osd2; /* OS dependent 2 */ |
332 | __le16 i_extra_isize; |
333 | __le16 i_pad1; |
334 | }; |
335 | |
336 | #define i_size_high i_dir_acl |
337 | |
338 | #if defined(__KERNEL__) || defined(__linux__) |
339 | #define i_reserved1 osd1.linux1.l_i_reserved1 |
340 | #define i_frag osd2.linux2.l_i_frag |
341 | #define i_fsize osd2.linux2.l_i_fsize |
342 | #define i_uid_low i_uid |
343 | #define i_gid_low i_gid |
344 | #define i_uid_high osd2.linux2.l_i_uid_high |
345 | #define i_gid_high osd2.linux2.l_i_gid_high |
346 | #define i_reserved2 osd2.linux2.l_i_reserved2 |
347 | |
348 | #elif defined(__GNU__) |
349 | |
350 | #define i_translator osd1.hurd1.h_i_translator |
351 | #define i_frag osd2.hurd2.h_i_frag; |
352 | #define i_fsize osd2.hurd2.h_i_fsize; |
353 | #define i_uid_high osd2.hurd2.h_i_uid_high |
354 | #define i_gid_high osd2.hurd2.h_i_gid_high |
355 | #define i_author osd2.hurd2.h_i_author |
356 | |
357 | #elif defined(__masix__) |
358 | |
359 | #define i_reserved1 osd1.masix1.m_i_reserved1 |
360 | #define i_frag osd2.masix2.m_i_frag |
361 | #define i_fsize osd2.masix2.m_i_fsize |
362 | #define i_reserved2 osd2.masix2.m_i_reserved2 |
363 | |
364 | #endif /* defined(__KERNEL__) || defined(__linux__) */ |
365 | |
366 | /* |
367 | * File system states |
368 | */ |
369 | #define EXT3_VALID_FS 0x0001 /* Unmounted cleanly */ |
370 | #define EXT3_ERROR_FS 0x0002 /* Errors detected */ |
371 | #define EXT3_ORPHAN_FS 0x0004 /* Orphans being recovered */ |
372 | |
373 | /* |
374 | * Misc. filesystem flags |
375 | */ |
376 | #define EXT2_FLAGS_SIGNED_HASH 0x0001 /* Signed dirhash in use */ |
377 | #define EXT2_FLAGS_UNSIGNED_HASH 0x0002 /* Unsigned dirhash in use */ |
378 | #define EXT2_FLAGS_TEST_FILESYS 0x0004 /* to test development code */ |
379 | |
380 | /* |
381 | * Mount flags |
382 | */ |
383 | #define EXT3_MOUNT_CHECK 0x00001 /* Do mount-time checks */ |
384 | #define EXT3_MOUNT_OLDALLOC 0x00002 /* Don't use the new Orlov allocator */ |
385 | #define EXT3_MOUNT_GRPID 0x00004 /* Create files with directory's group */ |
386 | #define EXT3_MOUNT_DEBUG 0x00008 /* Some debugging messages */ |
387 | #define EXT3_MOUNT_ERRORS_CONT 0x00010 /* Continue on errors */ |
388 | #define EXT3_MOUNT_ERRORS_RO 0x00020 /* Remount fs ro on errors */ |
389 | #define EXT3_MOUNT_ERRORS_PANIC 0x00040 /* Panic on errors */ |
390 | #define EXT3_MOUNT_MINIX_DF 0x00080 /* Mimics the Minix statfs */ |
391 | #define EXT3_MOUNT_NOLOAD 0x00100 /* Don't use existing journal*/ |
392 | #define EXT3_MOUNT_ABORT 0x00200 /* Fatal error detected */ |
393 | #define EXT3_MOUNT_DATA_FLAGS 0x00C00 /* Mode for data writes: */ |
394 | #define EXT3_MOUNT_JOURNAL_DATA 0x00400 /* Write data to journal */ |
395 | #define EXT3_MOUNT_ORDERED_DATA 0x00800 /* Flush data before commit */ |
396 | #define EXT3_MOUNT_WRITEBACK_DATA 0x00C00 /* No data ordering */ |
397 | #define EXT3_MOUNT_UPDATE_JOURNAL 0x01000 /* Update the journal format */ |
398 | #define EXT3_MOUNT_NO_UID32 0x02000 /* Disable 32-bit UIDs */ |
399 | #define EXT3_MOUNT_XATTR_USER 0x04000 /* Extended user attributes */ |
400 | #define EXT3_MOUNT_POSIX_ACL 0x08000 /* POSIX Access Control Lists */ |
401 | #define EXT3_MOUNT_RESERVATION 0x10000 /* Preallocation */ |
402 | #define EXT3_MOUNT_BARRIER 0x20000 /* Use block barriers */ |
403 | #define EXT3_MOUNT_QUOTA 0x80000 /* Some quota option set */ |
404 | #define EXT3_MOUNT_USRQUOTA 0x100000 /* "old" user quota */ |
405 | #define EXT3_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */ |
406 | #define EXT3_MOUNT_DATA_ERR_ABORT 0x400000 /* Abort on file data write |
407 | * error in ordered mode */ |
408 | |
409 | /* Compatibility, for having both ext2_fs.h and ext3_fs.h included at once */ |
410 | #ifndef _LINUX_EXT2_FS_H |
411 | #define clear_opt(o, opt) o &= ~EXT3_MOUNT_##opt |
412 | #define set_opt(o, opt) o |= EXT3_MOUNT_##opt |
413 | #define test_opt(sb, opt) (EXT3_SB(sb)->s_mount_opt & \ |
414 | EXT3_MOUNT_##opt) |
415 | #else |
416 | #define EXT2_MOUNT_NOLOAD EXT3_MOUNT_NOLOAD |
417 | #define EXT2_MOUNT_ABORT EXT3_MOUNT_ABORT |
418 | #define EXT2_MOUNT_DATA_FLAGS EXT3_MOUNT_DATA_FLAGS |
419 | #endif |
420 | |
421 | #define ext3_set_bit __test_and_set_bit_le |
422 | #define ext3_set_bit_atomic ext2_set_bit_atomic |
423 | #define ext3_clear_bit __test_and_clear_bit_le |
424 | #define ext3_clear_bit_atomic ext2_clear_bit_atomic |
425 | #define ext3_test_bit test_bit_le |
426 | #define ext3_find_first_zero_bit find_first_zero_bit_le |
427 | #define ext3_find_next_zero_bit find_next_zero_bit_le |
428 | |
429 | /* |
430 | * Maximal mount counts between two filesystem checks |
431 | */ |
432 | #define EXT3_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */ |
433 | #define EXT3_DFL_CHECKINTERVAL 0 /* Don't use interval check */ |
434 | |
435 | /* |
436 | * Behaviour when detecting errors |
437 | */ |
438 | #define EXT3_ERRORS_CONTINUE 1 /* Continue execution */ |
439 | #define EXT3_ERRORS_RO 2 /* Remount fs read-only */ |
440 | #define EXT3_ERRORS_PANIC 3 /* Panic */ |
441 | #define EXT3_ERRORS_DEFAULT EXT3_ERRORS_CONTINUE |
442 | |
443 | /* |
444 | * Structure of the super block |
445 | */ |
446 | struct ext3_super_block { |
447 | /*00*/ __le32 s_inodes_count; /* Inodes count */ |
448 | __le32 s_blocks_count; /* Blocks count */ |
449 | __le32 s_r_blocks_count; /* Reserved blocks count */ |
450 | __le32 s_free_blocks_count; /* Free blocks count */ |
451 | /*10*/ __le32 s_free_inodes_count; /* Free inodes count */ |
452 | __le32 s_first_data_block; /* First Data Block */ |
453 | __le32 s_log_block_size; /* Block size */ |
454 | __le32 s_log_frag_size; /* Fragment size */ |
455 | /*20*/ __le32 s_blocks_per_group; /* # Blocks per group */ |
456 | __le32 s_frags_per_group; /* # Fragments per group */ |
457 | __le32 s_inodes_per_group; /* # Inodes per group */ |
458 | __le32 s_mtime; /* Mount time */ |
459 | /*30*/ __le32 s_wtime; /* Write time */ |
460 | __le16 s_mnt_count; /* Mount count */ |
461 | __le16 s_max_mnt_count; /* Maximal mount count */ |
462 | __le16 s_magic; /* Magic signature */ |
463 | __le16 s_state; /* File system state */ |
464 | __le16 s_errors; /* Behaviour when detecting errors */ |
465 | __le16 s_minor_rev_level; /* minor revision level */ |
466 | /*40*/ __le32 s_lastcheck; /* time of last check */ |
467 | __le32 s_checkinterval; /* max. time between checks */ |
468 | __le32 s_creator_os; /* OS */ |
469 | __le32 s_rev_level; /* Revision level */ |
470 | /*50*/ __le16 s_def_resuid; /* Default uid for reserved blocks */ |
471 | __le16 s_def_resgid; /* Default gid for reserved blocks */ |
472 | /* |
473 | * These fields are for EXT3_DYNAMIC_REV superblocks only. |
474 | * |
475 | * Note: the difference between the compatible feature set and |
476 | * the incompatible feature set is that if there is a bit set |
477 | * in the incompatible feature set that the kernel doesn't |
478 | * know about, it should refuse to mount the filesystem. |
479 | * |
480 | * e2fsck's requirements are more strict; if it doesn't know |
481 | * about a feature in either the compatible or incompatible |
482 | * feature set, it must abort and not try to meddle with |
483 | * things it doesn't understand... |
484 | */ |
485 | __le32 s_first_ino; /* First non-reserved inode */ |
486 | __le16 s_inode_size; /* size of inode structure */ |
487 | __le16 s_block_group_nr; /* block group # of this superblock */ |
488 | __le32 s_feature_compat; /* compatible feature set */ |
489 | /*60*/ __le32 s_feature_incompat; /* incompatible feature set */ |
490 | __le32 s_feature_ro_compat; /* readonly-compatible feature set */ |
491 | /*68*/ __u8 s_uuid[16]; /* 128-bit uuid for volume */ |
492 | /*78*/ char s_volume_name[16]; /* volume name */ |
493 | /*88*/ char s_last_mounted[64]; /* directory where last mounted */ |
494 | /*C8*/ __le32 s_algorithm_usage_bitmap; /* For compression */ |
495 | /* |
496 | * Performance hints. Directory preallocation should only |
497 | * happen if the EXT3_FEATURE_COMPAT_DIR_PREALLOC flag is on. |
498 | */ |
499 | __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/ |
500 | __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */ |
501 | __le16 s_reserved_gdt_blocks; /* Per group desc for online growth */ |
502 | /* |
503 | * Journaling support valid if EXT3_FEATURE_COMPAT_HAS_JOURNAL set. |
504 | */ |
505 | /*D0*/ __u8 s_journal_uuid[16]; /* uuid of journal superblock */ |
506 | /*E0*/ __le32 s_journal_inum; /* inode number of journal file */ |
507 | __le32 s_journal_dev; /* device number of journal file */ |
508 | __le32 s_last_orphan; /* start of list of inodes to delete */ |
509 | __le32 s_hash_seed[4]; /* HTREE hash seed */ |
510 | __u8 s_def_hash_version; /* Default hash version to use */ |
511 | __u8 s_reserved_char_pad; |
512 | __u16 s_reserved_word_pad; |
513 | __le32 s_default_mount_opts; |
514 | __le32 s_first_meta_bg; /* First metablock block group */ |
515 | __le32 s_mkfs_time; /* When the filesystem was created */ |
516 | __le32 s_jnl_blocks[17]; /* Backup of the journal inode */ |
517 | /* 64bit support valid if EXT4_FEATURE_COMPAT_64BIT */ |
518 | /*150*/ __le32 s_blocks_count_hi; /* Blocks count */ |
519 | __le32 s_r_blocks_count_hi; /* Reserved blocks count */ |
520 | __le32 s_free_blocks_count_hi; /* Free blocks count */ |
521 | __le16 s_min_extra_isize; /* All inodes have at least # bytes */ |
522 | __le16 s_want_extra_isize; /* New inodes should reserve # bytes */ |
523 | __le32 s_flags; /* Miscellaneous flags */ |
524 | __le16 s_raid_stride; /* RAID stride */ |
525 | __le16 s_mmp_interval; /* # seconds to wait in MMP checking */ |
526 | __le64 s_mmp_block; /* Block for multi-mount protection */ |
527 | __le32 s_raid_stripe_width; /* blocks on all data disks (N*stride)*/ |
528 | __u8 s_log_groups_per_flex; /* FLEX_BG group size */ |
529 | __u8 s_reserved_char_pad2; |
530 | __le16 s_reserved_pad; |
531 | __u32 s_reserved[162]; /* Padding to the end of the block */ |
532 | }; |
533 | |
534 | #ifdef __KERNEL__ |
535 | #include <linux/ext3_fs_i.h> |
536 | #include <linux/ext3_fs_sb.h> |
537 | static inline struct ext3_sb_info * EXT3_SB(struct super_block *sb) |
538 | { |
539 | return sb->s_fs_info; |
540 | } |
541 | static inline struct ext3_inode_info *EXT3_I(struct inode *inode) |
542 | { |
543 | return container_of(inode, struct ext3_inode_info, vfs_inode); |
544 | } |
545 | |
546 | static inline int ext3_valid_inum(struct super_block *sb, unsigned long ino) |
547 | { |
548 | return ino == EXT3_ROOT_INO || |
549 | ino == EXT3_JOURNAL_INO || |
550 | ino == EXT3_RESIZE_INO || |
551 | (ino >= EXT3_FIRST_INO(sb) && |
552 | ino <= le32_to_cpu(EXT3_SB(sb)->s_es->s_inodes_count)); |
553 | } |
554 | |
555 | /* |
556 | * Inode dynamic state flags |
557 | */ |
558 | enum { |
559 | EXT3_STATE_JDATA, /* journaled data exists */ |
560 | EXT3_STATE_NEW, /* inode is newly created */ |
561 | EXT3_STATE_XATTR, /* has in-inode xattrs */ |
562 | EXT3_STATE_FLUSH_ON_CLOSE, /* flush dirty pages on close */ |
563 | }; |
564 | |
565 | static inline int ext3_test_inode_state(struct inode *inode, int bit) |
566 | { |
567 | return test_bit(bit, &EXT3_I(inode)->i_state_flags); |
568 | } |
569 | |
570 | static inline void ext3_set_inode_state(struct inode *inode, int bit) |
571 | { |
572 | set_bit(bit, &EXT3_I(inode)->i_state_flags); |
573 | } |
574 | |
575 | static inline void ext3_clear_inode_state(struct inode *inode, int bit) |
576 | { |
577 | clear_bit(bit, &EXT3_I(inode)->i_state_flags); |
578 | } |
579 | #else |
580 | /* Assume that user mode programs are passing in an ext3fs superblock, not |
581 | * a kernel struct super_block. This will allow us to call the feature-test |
582 | * macros from user land. */ |
583 | #define EXT3_SB(sb) (sb) |
584 | #endif |
585 | |
586 | #define NEXT_ORPHAN(inode) EXT3_I(inode)->i_dtime |
587 | |
588 | /* |
589 | * Codes for operating systems |
590 | */ |
591 | #define EXT3_OS_LINUX 0 |
592 | #define EXT3_OS_HURD 1 |
593 | #define EXT3_OS_MASIX 2 |
594 | #define EXT3_OS_FREEBSD 3 |
595 | #define EXT3_OS_LITES 4 |
596 | |
597 | /* |
598 | * Revision levels |
599 | */ |
600 | #define EXT3_GOOD_OLD_REV 0 /* The good old (original) format */ |
601 | #define EXT3_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */ |
602 | |
603 | #define EXT3_CURRENT_REV EXT3_GOOD_OLD_REV |
604 | #define EXT3_MAX_SUPP_REV EXT3_DYNAMIC_REV |
605 | |
606 | #define EXT3_GOOD_OLD_INODE_SIZE 128 |
607 | |
608 | /* |
609 | * Feature set definitions |
610 | */ |
611 | |
612 | #define EXT3_HAS_COMPAT_FEATURE(sb,mask) \ |
613 | ( EXT3_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) ) |
614 | #define EXT3_HAS_RO_COMPAT_FEATURE(sb,mask) \ |
615 | ( EXT3_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask) ) |
616 | #define EXT3_HAS_INCOMPAT_FEATURE(sb,mask) \ |
617 | ( EXT3_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) ) |
618 | #define EXT3_SET_COMPAT_FEATURE(sb,mask) \ |
619 | EXT3_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask) |
620 | #define EXT3_SET_RO_COMPAT_FEATURE(sb,mask) \ |
621 | EXT3_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask) |
622 | #define EXT3_SET_INCOMPAT_FEATURE(sb,mask) \ |
623 | EXT3_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask) |
624 | #define EXT3_CLEAR_COMPAT_FEATURE(sb,mask) \ |
625 | EXT3_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask) |
626 | #define EXT3_CLEAR_RO_COMPAT_FEATURE(sb,mask) \ |
627 | EXT3_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask) |
628 | #define EXT3_CLEAR_INCOMPAT_FEATURE(sb,mask) \ |
629 | EXT3_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask) |
630 | |
631 | #define EXT3_FEATURE_COMPAT_DIR_PREALLOC 0x0001 |
632 | #define EXT3_FEATURE_COMPAT_IMAGIC_INODES 0x0002 |
633 | #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 |
634 | #define EXT3_FEATURE_COMPAT_EXT_ATTR 0x0008 |
635 | #define EXT3_FEATURE_COMPAT_RESIZE_INODE 0x0010 |
636 | #define EXT3_FEATURE_COMPAT_DIR_INDEX 0x0020 |
637 | |
638 | #define EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 |
639 | #define EXT3_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 |
640 | #define EXT3_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 |
641 | |
642 | #define EXT3_FEATURE_INCOMPAT_COMPRESSION 0x0001 |
643 | #define EXT3_FEATURE_INCOMPAT_FILETYPE 0x0002 |
644 | #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */ |
645 | #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */ |
646 | #define EXT3_FEATURE_INCOMPAT_META_BG 0x0010 |
647 | |
648 | #define EXT3_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR |
649 | #define EXT3_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_FILETYPE| \ |
650 | EXT3_FEATURE_INCOMPAT_RECOVER| \ |
651 | EXT3_FEATURE_INCOMPAT_META_BG) |
652 | #define EXT3_FEATURE_RO_COMPAT_SUPP (EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER| \ |
653 | EXT3_FEATURE_RO_COMPAT_LARGE_FILE| \ |
654 | EXT3_FEATURE_RO_COMPAT_BTREE_DIR) |
655 | |
656 | /* |
657 | * Default values for user and/or group using reserved blocks |
658 | */ |
659 | #define EXT3_DEF_RESUID 0 |
660 | #define EXT3_DEF_RESGID 0 |
661 | |
662 | /* |
663 | * Default mount options |
664 | */ |
665 | #define EXT3_DEFM_DEBUG 0x0001 |
666 | #define EXT3_DEFM_BSDGROUPS 0x0002 |
667 | #define EXT3_DEFM_XATTR_USER 0x0004 |
668 | #define EXT3_DEFM_ACL 0x0008 |
669 | #define EXT3_DEFM_UID16 0x0010 |
670 | #define EXT3_DEFM_JMODE 0x0060 |
671 | #define EXT3_DEFM_JMODE_DATA 0x0020 |
672 | #define EXT3_DEFM_JMODE_ORDERED 0x0040 |
673 | #define EXT3_DEFM_JMODE_WBACK 0x0060 |
674 | |
675 | /* |
676 | * Structure of a directory entry |
677 | */ |
678 | #define EXT3_NAME_LEN 255 |
679 | |
680 | struct ext3_dir_entry { |
681 | __le32 inode; /* Inode number */ |
682 | __le16 rec_len; /* Directory entry length */ |
683 | __le16 name_len; /* Name length */ |
684 | char name[EXT3_NAME_LEN]; /* File name */ |
685 | }; |
686 | |
687 | /* |
688 | * The new version of the directory entry. Since EXT3 structures are |
689 | * stored in intel byte order, and the name_len field could never be |
690 | * bigger than 255 chars, it's safe to reclaim the extra byte for the |
691 | * file_type field. |
692 | */ |
693 | struct ext3_dir_entry_2 { |
694 | __le32 inode; /* Inode number */ |
695 | __le16 rec_len; /* Directory entry length */ |
696 | __u8 name_len; /* Name length */ |
697 | __u8 file_type; |
698 | char name[EXT3_NAME_LEN]; /* File name */ |
699 | }; |
700 | |
701 | /* |
702 | * Ext3 directory file types. Only the low 3 bits are used. The |
703 | * other bits are reserved for now. |
704 | */ |
705 | #define EXT3_FT_UNKNOWN 0 |
706 | #define EXT3_FT_REG_FILE 1 |
707 | #define EXT3_FT_DIR 2 |
708 | #define EXT3_FT_CHRDEV 3 |
709 | #define EXT3_FT_BLKDEV 4 |
710 | #define EXT3_FT_FIFO 5 |
711 | #define EXT3_FT_SOCK 6 |
712 | #define EXT3_FT_SYMLINK 7 |
713 | |
714 | #define EXT3_FT_MAX 8 |
715 | |
716 | /* |
717 | * EXT3_DIR_PAD defines the directory entries boundaries |
718 | * |
719 | * NOTE: It must be a multiple of 4 |
720 | */ |
721 | #define EXT3_DIR_PAD 4 |
722 | #define EXT3_DIR_ROUND (EXT3_DIR_PAD - 1) |
723 | #define EXT3_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT3_DIR_ROUND) & \ |
724 | ~EXT3_DIR_ROUND) |
725 | #define EXT3_MAX_REC_LEN ((1<<16)-1) |
726 | |
727 | /* |
728 | * Tests against MAX_REC_LEN etc were put in place for 64k block |
729 | * sizes; if that is not possible on this arch, we can skip |
730 | * those tests and speed things up. |
731 | */ |
732 | static inline unsigned ext3_rec_len_from_disk(__le16 dlen) |
733 | { |
734 | unsigned len = le16_to_cpu(dlen); |
735 | |
736 | #if (PAGE_CACHE_SIZE >= 65536) |
737 | if (len == EXT3_MAX_REC_LEN) |
738 | return 1 << 16; |
739 | #endif |
740 | return len; |
741 | } |
742 | |
743 | static inline __le16 ext3_rec_len_to_disk(unsigned len) |
744 | { |
745 | #if (PAGE_CACHE_SIZE >= 65536) |
746 | if (len == (1 << 16)) |
747 | return cpu_to_le16(EXT3_MAX_REC_LEN); |
748 | else if (len > (1 << 16)) |
749 | BUG(); |
750 | #endif |
751 | return cpu_to_le16(len); |
752 | } |
753 | |
754 | /* |
755 | * Hash Tree Directory indexing |
756 | * (c) Daniel Phillips, 2001 |
757 | */ |
758 | |
759 | #define is_dx(dir) (EXT3_HAS_COMPAT_FEATURE(dir->i_sb, \ |
760 | EXT3_FEATURE_COMPAT_DIR_INDEX) && \ |
761 | (EXT3_I(dir)->i_flags & EXT3_INDEX_FL)) |
762 | #define EXT3_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT3_LINK_MAX) |
763 | #define EXT3_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1) |
764 | |
765 | /* Legal values for the dx_root hash_version field: */ |
766 | |
767 | #define DX_HASH_LEGACY 0 |
768 | #define DX_HASH_HALF_MD4 1 |
769 | #define DX_HASH_TEA 2 |
770 | #define DX_HASH_LEGACY_UNSIGNED 3 |
771 | #define DX_HASH_HALF_MD4_UNSIGNED 4 |
772 | #define DX_HASH_TEA_UNSIGNED 5 |
773 | |
774 | #ifdef __KERNEL__ |
775 | |
776 | /* hash info structure used by the directory hash */ |
777 | struct dx_hash_info |
778 | { |
779 | u32 hash; |
780 | u32 minor_hash; |
781 | int hash_version; |
782 | u32 *seed; |
783 | }; |
784 | |
785 | #define EXT3_HTREE_EOF 0x7fffffff |
786 | |
787 | /* |
788 | * Control parameters used by ext3_htree_next_block |
789 | */ |
790 | #define HASH_NB_ALWAYS 1 |
791 | |
792 | |
793 | /* |
794 | * Describe an inode's exact location on disk and in memory |
795 | */ |
796 | struct ext3_iloc |
797 | { |
798 | struct buffer_head *bh; |
799 | unsigned long offset; |
800 | unsigned long block_group; |
801 | }; |
802 | |
803 | static inline struct ext3_inode *ext3_raw_inode(struct ext3_iloc *iloc) |
804 | { |
805 | return (struct ext3_inode *) (iloc->bh->b_data + iloc->offset); |
806 | } |
807 | |
808 | /* |
809 | * This structure is stuffed into the struct file's private_data field |
810 | * for directories. It is where we put information so that we can do |
811 | * readdir operations in hash tree order. |
812 | */ |
813 | struct dir_private_info { |
814 | struct rb_root root; |
815 | struct rb_node *curr_node; |
816 | struct fname *extra_fname; |
817 | loff_t last_pos; |
818 | __u32 curr_hash; |
819 | __u32 curr_minor_hash; |
820 | __u32 next_hash; |
821 | }; |
822 | |
823 | /* calculate the first block number of the group */ |
824 | static inline ext3_fsblk_t |
825 | ext3_group_first_block_no(struct super_block *sb, unsigned long group_no) |
826 | { |
827 | return group_no * (ext3_fsblk_t)EXT3_BLOCKS_PER_GROUP(sb) + |
828 | le32_to_cpu(EXT3_SB(sb)->s_es->s_first_data_block); |
829 | } |
830 | |
831 | /* |
832 | * Special error return code only used by dx_probe() and its callers. |
833 | */ |
834 | #define ERR_BAD_DX_DIR -75000 |
835 | |
836 | /* |
837 | * Function prototypes |
838 | */ |
839 | |
840 | /* |
841 | * Ok, these declarations are also in <linux/kernel.h> but none of the |
842 | * ext3 source programs needs to include it so they are duplicated here. |
843 | */ |
844 | # define NORET_TYPE /**/ |
845 | # define ATTRIB_NORET __attribute__((noreturn)) |
846 | # define NORET_AND noreturn, |
847 | |
848 | /* balloc.c */ |
849 | extern int ext3_bg_has_super(struct super_block *sb, int group); |
850 | extern unsigned long ext3_bg_num_gdb(struct super_block *sb, int group); |
851 | extern ext3_fsblk_t ext3_new_block (handle_t *handle, struct inode *inode, |
852 | ext3_fsblk_t goal, int *errp); |
853 | extern ext3_fsblk_t ext3_new_blocks (handle_t *handle, struct inode *inode, |
854 | ext3_fsblk_t goal, unsigned long *count, int *errp); |
855 | extern void ext3_free_blocks (handle_t *handle, struct inode *inode, |
856 | ext3_fsblk_t block, unsigned long count); |
857 | extern void ext3_free_blocks_sb (handle_t *handle, struct super_block *sb, |
858 | ext3_fsblk_t block, unsigned long count, |
859 | unsigned long *pdquot_freed_blocks); |
860 | extern ext3_fsblk_t ext3_count_free_blocks (struct super_block *); |
861 | extern void ext3_check_blocks_bitmap (struct super_block *); |
862 | extern struct ext3_group_desc * ext3_get_group_desc(struct super_block * sb, |
863 | unsigned int block_group, |
864 | struct buffer_head ** bh); |
865 | extern int ext3_should_retry_alloc(struct super_block *sb, int *retries); |
866 | extern void ext3_init_block_alloc_info(struct inode *); |
867 | extern void ext3_rsv_window_add(struct super_block *sb, struct ext3_reserve_window_node *rsv); |
868 | extern int ext3_trim_fs(struct super_block *sb, struct fstrim_range *range); |
869 | |
870 | /* dir.c */ |
871 | extern int ext3_check_dir_entry(const char *, struct inode *, |
872 | struct ext3_dir_entry_2 *, |
873 | struct buffer_head *, unsigned long); |
874 | extern int ext3_htree_store_dirent(struct file *dir_file, __u32 hash, |
875 | __u32 minor_hash, |
876 | struct ext3_dir_entry_2 *dirent); |
877 | extern void ext3_htree_free_dir_info(struct dir_private_info *p); |
878 | |
879 | /* fsync.c */ |
880 | extern int ext3_sync_file(struct file *, int); |
881 | |
882 | /* hash.c */ |
883 | extern int ext3fs_dirhash(const char *name, int len, struct |
884 | dx_hash_info *hinfo); |
885 | |
886 | /* ialloc.c */ |
887 | extern struct inode * ext3_new_inode (handle_t *, struct inode *, |
888 | const struct qstr *, int); |
889 | extern void ext3_free_inode (handle_t *, struct inode *); |
890 | extern struct inode * ext3_orphan_get (struct super_block *, unsigned long); |
891 | extern unsigned long ext3_count_free_inodes (struct super_block *); |
892 | extern unsigned long ext3_count_dirs (struct super_block *); |
893 | extern void ext3_check_inodes_bitmap (struct super_block *); |
894 | extern unsigned long ext3_count_free (struct buffer_head *, unsigned); |
895 | |
896 | |
897 | /* inode.c */ |
898 | int ext3_forget(handle_t *handle, int is_metadata, struct inode *inode, |
899 | struct buffer_head *bh, ext3_fsblk_t blocknr); |
900 | struct buffer_head * ext3_getblk (handle_t *, struct inode *, long, int, int *); |
901 | struct buffer_head * ext3_bread (handle_t *, struct inode *, int, int, int *); |
902 | int ext3_get_blocks_handle(handle_t *handle, struct inode *inode, |
903 | sector_t iblock, unsigned long maxblocks, struct buffer_head *bh_result, |
904 | int create); |
905 | |
906 | extern struct inode *ext3_iget(struct super_block *, unsigned long); |
907 | extern int ext3_write_inode (struct inode *, struct writeback_control *); |
908 | extern int ext3_setattr (struct dentry *, struct iattr *); |
909 | extern void ext3_evict_inode (struct inode *); |
910 | extern int ext3_sync_inode (handle_t *, struct inode *); |
911 | extern void ext3_discard_reservation (struct inode *); |
912 | extern void ext3_dirty_inode(struct inode *, int); |
913 | extern int ext3_change_inode_journal_flag(struct inode *, int); |
914 | extern int ext3_get_inode_loc(struct inode *, struct ext3_iloc *); |
915 | extern int ext3_can_truncate(struct inode *inode); |
916 | extern void ext3_truncate (struct inode *); |
917 | extern void ext3_set_inode_flags(struct inode *); |
918 | extern void ext3_get_inode_flags(struct ext3_inode_info *); |
919 | extern void ext3_set_aops(struct inode *inode); |
920 | extern int ext3_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
921 | u64 start, u64 len); |
922 | |
923 | /* ioctl.c */ |
924 | extern long ext3_ioctl(struct file *, unsigned int, unsigned long); |
925 | extern long ext3_compat_ioctl(struct file *, unsigned int, unsigned long); |
926 | |
927 | /* namei.c */ |
928 | extern int ext3_orphan_add(handle_t *, struct inode *); |
929 | extern int ext3_orphan_del(handle_t *, struct inode *); |
930 | extern int ext3_htree_fill_tree(struct file *dir_file, __u32 start_hash, |
931 | __u32 start_minor_hash, __u32 *next_hash); |
932 | |
933 | /* resize.c */ |
934 | extern int ext3_group_add(struct super_block *sb, |
935 | struct ext3_new_group_data *input); |
936 | extern int ext3_group_extend(struct super_block *sb, |
937 | struct ext3_super_block *es, |
938 | ext3_fsblk_t n_blocks_count); |
939 | |
940 | /* super.c */ |
941 | extern void ext3_error (struct super_block *, const char *, const char *, ...) |
942 | __attribute__ ((format (printf, 3, 4))); |
943 | extern void __ext3_std_error (struct super_block *, const char *, int); |
944 | extern void ext3_abort (struct super_block *, const char *, const char *, ...) |
945 | __attribute__ ((format (printf, 3, 4))); |
946 | extern void ext3_warning (struct super_block *, const char *, const char *, ...) |
947 | __attribute__ ((format (printf, 3, 4))); |
948 | extern void ext3_msg(struct super_block *, const char *, const char *, ...) |
949 | __attribute__ ((format (printf, 3, 4))); |
950 | extern void ext3_update_dynamic_rev (struct super_block *sb); |
951 | |
952 | #define ext3_std_error(sb, errno) \ |
953 | do { \ |
954 | if ((errno)) \ |
955 | __ext3_std_error((sb), __func__, (errno)); \ |
956 | } while (0) |
957 | |
958 | /* |
959 | * Inodes and files operations |
960 | */ |
961 | |
962 | /* dir.c */ |
963 | extern const struct file_operations ext3_dir_operations; |
964 | |
965 | /* file.c */ |
966 | extern const struct inode_operations ext3_file_inode_operations; |
967 | extern const struct file_operations ext3_file_operations; |
968 | |
969 | /* namei.c */ |
970 | extern const struct inode_operations ext3_dir_inode_operations; |
971 | extern const struct inode_operations ext3_special_inode_operations; |
972 | |
973 | /* symlink.c */ |
974 | extern const struct inode_operations ext3_symlink_inode_operations; |
975 | extern const struct inode_operations ext3_fast_symlink_inode_operations; |
976 | |
977 | |
978 | #endif /* __KERNEL__ */ |
979 | |
980 | #endif /* _LINUX_EXT3_FS_H */ |
981 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9