Commit | Line | Data |
---|---|---|
1da177e4 LT |
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> | |
e18fa700 | 20 | #include <linux/magic.h> |
1da177e4 LT |
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 | |
b54e41ec MC |
35 | /*max window size: 1024(direct blocks) + 3([t,d]indirect blocks) */ |
36 | #define EXT3_MAX_RESERVE_BLOCKS 1027 | |
1da177e4 | 37 | #define EXT3_RESERVE_WINDOW_NOT_ALLOCATED 0 |
1da177e4 LT |
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:", \ | |
d5c003b4 | 46 | __FILE__, __LINE__, __func__); \ |
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | |
0f0a89eb TS |
75 | #define EXT3_MAX_BLOCK_SIZE 65536 |
76 | #define EXT3_MIN_BLOCK_LOG_SIZE 10 | |
1da177e4 LT |
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 | ||
2e8671cb DG |
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 | ||
04143e2f DG |
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 | ||
1da177e4 LT |
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 | */ | |
36695673 DH |
232 | #define EXT3_IOC_GETFLAGS FS_IOC_GETFLAGS |
233 | #define EXT3_IOC_SETFLAGS FS_IOC_SETFLAGS | |
1da177e4 LT |
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) | |
36695673 DH |
238 | #define EXT3_IOC_GETVERSION_OLD FS_IOC_GETVERSION |
239 | #define EXT3_IOC_SETVERSION_OLD FS_IOC_SETVERSION | |
1da177e4 LT |
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 | ||
36695673 DH |
246 | /* |
247 | * ioctl commands in 32 bit emulation | |
248 | */ | |
52a700c5 DH |
249 | #define EXT3_IOC32_GETFLAGS FS_IOC32_GETFLAGS |
250 | #define EXT3_IOC32_SETFLAGS FS_IOC32_SETFLAGS | |
36695673 DH |
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 | |
52a700c5 DH |
259 | #define EXT3_IOC32_GETVERSION_OLD FS_IOC32_GETVERSION |
260 | #define EXT3_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION | |
261 | ||
36695673 | 262 | |
08c6a96f JK |
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 | ||
1da177e4 LT |
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 | ||
5e1f8c9e TT |
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 | ||
1da177e4 LT |
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_NOBH 0x40000 /* No bufferheads */ | |
1f54587b | 404 | #define EXT3_MOUNT_QUOTA 0x80000 /* Some quota option set */ |
8fc2751b MB |
405 | #define EXT3_MOUNT_USRQUOTA 0x100000 /* "old" user quota */ |
406 | #define EXT3_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */ | |
0e4fb5e2 HK |
407 | #define EXT3_MOUNT_DATA_ERR_ABORT 0x400000 /* Abort on file data write |
408 | * error in ordered mode */ | |
1da177e4 LT |
409 | |
410 | /* Compatibility, for having both ext2_fs.h and ext3_fs.h included at once */ | |
411 | #ifndef _LINUX_EXT2_FS_H | |
412 | #define clear_opt(o, opt) o &= ~EXT3_MOUNT_##opt | |
413 | #define set_opt(o, opt) o |= EXT3_MOUNT_##opt | |
414 | #define test_opt(sb, opt) (EXT3_SB(sb)->s_mount_opt & \ | |
415 | EXT3_MOUNT_##opt) | |
416 | #else | |
417 | #define EXT2_MOUNT_NOLOAD EXT3_MOUNT_NOLOAD | |
418 | #define EXT2_MOUNT_ABORT EXT3_MOUNT_ABORT | |
419 | #define EXT2_MOUNT_DATA_FLAGS EXT3_MOUNT_DATA_FLAGS | |
420 | #endif | |
421 | ||
422 | #define ext3_set_bit ext2_set_bit | |
423 | #define ext3_set_bit_atomic ext2_set_bit_atomic | |
424 | #define ext3_clear_bit ext2_clear_bit | |
425 | #define ext3_clear_bit_atomic ext2_clear_bit_atomic | |
426 | #define ext3_test_bit ext2_test_bit | |
427 | #define ext3_find_first_zero_bit ext2_find_first_zero_bit | |
428 | #define ext3_find_next_zero_bit ext2_find_next_zero_bit | |
429 | ||
430 | /* | |
431 | * Maximal mount counts between two filesystem checks | |
432 | */ | |
433 | #define EXT3_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */ | |
434 | #define EXT3_DFL_CHECKINTERVAL 0 /* Don't use interval check */ | |
435 | ||
436 | /* | |
437 | * Behaviour when detecting errors | |
438 | */ | |
439 | #define EXT3_ERRORS_CONTINUE 1 /* Continue execution */ | |
440 | #define EXT3_ERRORS_RO 2 /* Remount fs read-only */ | |
441 | #define EXT3_ERRORS_PANIC 3 /* Panic */ | |
442 | #define EXT3_ERRORS_DEFAULT EXT3_ERRORS_CONTINUE | |
443 | ||
444 | /* | |
445 | * Structure of the super block | |
446 | */ | |
447 | struct ext3_super_block { | |
448 | /*00*/ __le32 s_inodes_count; /* Inodes count */ | |
449 | __le32 s_blocks_count; /* Blocks count */ | |
450 | __le32 s_r_blocks_count; /* Reserved blocks count */ | |
451 | __le32 s_free_blocks_count; /* Free blocks count */ | |
452 | /*10*/ __le32 s_free_inodes_count; /* Free inodes count */ | |
453 | __le32 s_first_data_block; /* First Data Block */ | |
454 | __le32 s_log_block_size; /* Block size */ | |
455 | __le32 s_log_frag_size; /* Fragment size */ | |
456 | /*20*/ __le32 s_blocks_per_group; /* # Blocks per group */ | |
457 | __le32 s_frags_per_group; /* # Fragments per group */ | |
458 | __le32 s_inodes_per_group; /* # Inodes per group */ | |
459 | __le32 s_mtime; /* Mount time */ | |
460 | /*30*/ __le32 s_wtime; /* Write time */ | |
461 | __le16 s_mnt_count; /* Mount count */ | |
462 | __le16 s_max_mnt_count; /* Maximal mount count */ | |
463 | __le16 s_magic; /* Magic signature */ | |
464 | __le16 s_state; /* File system state */ | |
465 | __le16 s_errors; /* Behaviour when detecting errors */ | |
466 | __le16 s_minor_rev_level; /* minor revision level */ | |
467 | /*40*/ __le32 s_lastcheck; /* time of last check */ | |
468 | __le32 s_checkinterval; /* max. time between checks */ | |
469 | __le32 s_creator_os; /* OS */ | |
470 | __le32 s_rev_level; /* Revision level */ | |
471 | /*50*/ __le16 s_def_resuid; /* Default uid for reserved blocks */ | |
472 | __le16 s_def_resgid; /* Default gid for reserved blocks */ | |
473 | /* | |
474 | * These fields are for EXT3_DYNAMIC_REV superblocks only. | |
475 | * | |
476 | * Note: the difference between the compatible feature set and | |
477 | * the incompatible feature set is that if there is a bit set | |
478 | * in the incompatible feature set that the kernel doesn't | |
479 | * know about, it should refuse to mount the filesystem. | |
480 | * | |
481 | * e2fsck's requirements are more strict; if it doesn't know | |
482 | * about a feature in either the compatible or incompatible | |
483 | * feature set, it must abort and not try to meddle with | |
484 | * things it doesn't understand... | |
485 | */ | |
486 | __le32 s_first_ino; /* First non-reserved inode */ | |
487 | __le16 s_inode_size; /* size of inode structure */ | |
488 | __le16 s_block_group_nr; /* block group # of this superblock */ | |
489 | __le32 s_feature_compat; /* compatible feature set */ | |
490 | /*60*/ __le32 s_feature_incompat; /* incompatible feature set */ | |
491 | __le32 s_feature_ro_compat; /* readonly-compatible feature set */ | |
492 | /*68*/ __u8 s_uuid[16]; /* 128-bit uuid for volume */ | |
493 | /*78*/ char s_volume_name[16]; /* volume name */ | |
494 | /*88*/ char s_last_mounted[64]; /* directory where last mounted */ | |
495 | /*C8*/ __le32 s_algorithm_usage_bitmap; /* For compression */ | |
496 | /* | |
497 | * Performance hints. Directory preallocation should only | |
498 | * happen if the EXT3_FEATURE_COMPAT_DIR_PREALLOC flag is on. | |
499 | */ | |
500 | __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/ | |
501 | __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */ | |
a4e4de36 | 502 | __le16 s_reserved_gdt_blocks; /* Per group desc for online growth */ |
1da177e4 LT |
503 | /* |
504 | * Journaling support valid if EXT3_FEATURE_COMPAT_HAS_JOURNAL set. | |
505 | */ | |
506 | /*D0*/ __u8 s_journal_uuid[16]; /* uuid of journal superblock */ | |
507 | /*E0*/ __le32 s_journal_inum; /* inode number of journal file */ | |
508 | __le32 s_journal_dev; /* device number of journal file */ | |
509 | __le32 s_last_orphan; /* start of list of inodes to delete */ | |
510 | __le32 s_hash_seed[4]; /* HTREE hash seed */ | |
511 | __u8 s_def_hash_version; /* Default hash version to use */ | |
512 | __u8 s_reserved_char_pad; | |
513 | __u16 s_reserved_word_pad; | |
514 | __le32 s_default_mount_opts; | |
e9ad5620 | 515 | __le32 s_first_meta_bg; /* First metablock block group */ |
5e1f8c9e TT |
516 | __le32 s_mkfs_time; /* When the filesystem was created */ |
517 | __le32 s_jnl_blocks[17]; /* Backup of the journal inode */ | |
518 | /* 64bit support valid if EXT4_FEATURE_COMPAT_64BIT */ | |
519 | /*150*/ __le32 s_blocks_count_hi; /* Blocks count */ | |
520 | __le32 s_r_blocks_count_hi; /* Reserved blocks count */ | |
521 | __le32 s_free_blocks_count_hi; /* Free blocks count */ | |
522 | __le16 s_min_extra_isize; /* All inodes have at least # bytes */ | |
523 | __le16 s_want_extra_isize; /* New inodes should reserve # bytes */ | |
524 | __le32 s_flags; /* Miscellaneous flags */ | |
525 | __le16 s_raid_stride; /* RAID stride */ | |
526 | __le16 s_mmp_interval; /* # seconds to wait in MMP checking */ | |
527 | __le64 s_mmp_block; /* Block for multi-mount protection */ | |
528 | __le32 s_raid_stripe_width; /* blocks on all data disks (N*stride)*/ | |
529 | __u8 s_log_groups_per_flex; /* FLEX_BG group size */ | |
530 | __u8 s_reserved_char_pad2; | |
531 | __le16 s_reserved_pad; | |
532 | __u32 s_reserved[162]; /* Padding to the end of the block */ | |
1da177e4 LT |
533 | }; |
534 | ||
535 | #ifdef __KERNEL__ | |
d85004eb DW |
536 | #include <linux/ext3_fs_i.h> |
537 | #include <linux/ext3_fs_sb.h> | |
1da177e4 LT |
538 | static inline struct ext3_sb_info * EXT3_SB(struct super_block *sb) |
539 | { | |
540 | return sb->s_fs_info; | |
541 | } | |
542 | static inline struct ext3_inode_info *EXT3_I(struct inode *inode) | |
543 | { | |
544 | return container_of(inode, struct ext3_inode_info, vfs_inode); | |
545 | } | |
2ccb48eb NB |
546 | |
547 | static inline int ext3_valid_inum(struct super_block *sb, unsigned long ino) | |
548 | { | |
549 | return ino == EXT3_ROOT_INO || | |
550 | ino == EXT3_JOURNAL_INO || | |
551 | ino == EXT3_RESIZE_INO || | |
552 | (ino >= EXT3_FIRST_INO(sb) && | |
553 | ino <= le32_to_cpu(EXT3_SB(sb)->s_es->s_inodes_count)); | |
554 | } | |
9df93939 JK |
555 | |
556 | /* | |
557 | * Inode dynamic state flags | |
558 | */ | |
559 | enum { | |
560 | EXT3_STATE_JDATA, /* journaled data exists */ | |
561 | EXT3_STATE_NEW, /* inode is newly created */ | |
562 | EXT3_STATE_XATTR, /* has in-inode xattrs */ | |
563 | EXT3_STATE_FLUSH_ON_CLOSE, /* flush dirty pages on close */ | |
564 | }; | |
565 | ||
566 | static inline int ext3_test_inode_state(struct inode *inode, int bit) | |
567 | { | |
de329820 | 568 | return test_bit(bit, &EXT3_I(inode)->i_state_flags); |
9df93939 JK |
569 | } |
570 | ||
571 | static inline void ext3_set_inode_state(struct inode *inode, int bit) | |
572 | { | |
de329820 | 573 | set_bit(bit, &EXT3_I(inode)->i_state_flags); |
9df93939 JK |
574 | } |
575 | ||
576 | static inline void ext3_clear_inode_state(struct inode *inode, int bit) | |
577 | { | |
de329820 | 578 | clear_bit(bit, &EXT3_I(inode)->i_state_flags); |
9df93939 | 579 | } |
1da177e4 LT |
580 | #else |
581 | /* Assume that user mode programs are passing in an ext3fs superblock, not | |
582 | * a kernel struct super_block. This will allow us to call the feature-test | |
583 | * macros from user land. */ | |
584 | #define EXT3_SB(sb) (sb) | |
585 | #endif | |
586 | ||
587 | #define NEXT_ORPHAN(inode) EXT3_I(inode)->i_dtime | |
588 | ||
589 | /* | |
590 | * Codes for operating systems | |
591 | */ | |
592 | #define EXT3_OS_LINUX 0 | |
593 | #define EXT3_OS_HURD 1 | |
594 | #define EXT3_OS_MASIX 2 | |
595 | #define EXT3_OS_FREEBSD 3 | |
596 | #define EXT3_OS_LITES 4 | |
597 | ||
598 | /* | |
599 | * Revision levels | |
600 | */ | |
601 | #define EXT3_GOOD_OLD_REV 0 /* The good old (original) format */ | |
602 | #define EXT3_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */ | |
603 | ||
604 | #define EXT3_CURRENT_REV EXT3_GOOD_OLD_REV | |
605 | #define EXT3_MAX_SUPP_REV EXT3_DYNAMIC_REV | |
606 | ||
607 | #define EXT3_GOOD_OLD_INODE_SIZE 128 | |
608 | ||
609 | /* | |
610 | * Feature set definitions | |
611 | */ | |
612 | ||
613 | #define EXT3_HAS_COMPAT_FEATURE(sb,mask) \ | |
614 | ( EXT3_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) ) | |
615 | #define EXT3_HAS_RO_COMPAT_FEATURE(sb,mask) \ | |
616 | ( EXT3_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask) ) | |
617 | #define EXT3_HAS_INCOMPAT_FEATURE(sb,mask) \ | |
618 | ( EXT3_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) ) | |
619 | #define EXT3_SET_COMPAT_FEATURE(sb,mask) \ | |
620 | EXT3_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask) | |
621 | #define EXT3_SET_RO_COMPAT_FEATURE(sb,mask) \ | |
622 | EXT3_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask) | |
623 | #define EXT3_SET_INCOMPAT_FEATURE(sb,mask) \ | |
624 | EXT3_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask) | |
625 | #define EXT3_CLEAR_COMPAT_FEATURE(sb,mask) \ | |
626 | EXT3_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask) | |
627 | #define EXT3_CLEAR_RO_COMPAT_FEATURE(sb,mask) \ | |
628 | EXT3_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask) | |
629 | #define EXT3_CLEAR_INCOMPAT_FEATURE(sb,mask) \ | |
630 | EXT3_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask) | |
631 | ||
632 | #define EXT3_FEATURE_COMPAT_DIR_PREALLOC 0x0001 | |
633 | #define EXT3_FEATURE_COMPAT_IMAGIC_INODES 0x0002 | |
634 | #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 | |
635 | #define EXT3_FEATURE_COMPAT_EXT_ATTR 0x0008 | |
636 | #define EXT3_FEATURE_COMPAT_RESIZE_INODE 0x0010 | |
637 | #define EXT3_FEATURE_COMPAT_DIR_INDEX 0x0020 | |
638 | ||
639 | #define EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 | |
640 | #define EXT3_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 | |
641 | #define EXT3_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 | |
642 | ||
643 | #define EXT3_FEATURE_INCOMPAT_COMPRESSION 0x0001 | |
644 | #define EXT3_FEATURE_INCOMPAT_FILETYPE 0x0002 | |
645 | #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */ | |
646 | #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */ | |
647 | #define EXT3_FEATURE_INCOMPAT_META_BG 0x0010 | |
648 | ||
649 | #define EXT3_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR | |
650 | #define EXT3_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_FILETYPE| \ | |
651 | EXT3_FEATURE_INCOMPAT_RECOVER| \ | |
652 | EXT3_FEATURE_INCOMPAT_META_BG) | |
653 | #define EXT3_FEATURE_RO_COMPAT_SUPP (EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER| \ | |
654 | EXT3_FEATURE_RO_COMPAT_LARGE_FILE| \ | |
655 | EXT3_FEATURE_RO_COMPAT_BTREE_DIR) | |
656 | ||
657 | /* | |
658 | * Default values for user and/or group using reserved blocks | |
659 | */ | |
660 | #define EXT3_DEF_RESUID 0 | |
661 | #define EXT3_DEF_RESGID 0 | |
662 | ||
663 | /* | |
664 | * Default mount options | |
665 | */ | |
666 | #define EXT3_DEFM_DEBUG 0x0001 | |
667 | #define EXT3_DEFM_BSDGROUPS 0x0002 | |
668 | #define EXT3_DEFM_XATTR_USER 0x0004 | |
669 | #define EXT3_DEFM_ACL 0x0008 | |
670 | #define EXT3_DEFM_UID16 0x0010 | |
671 | #define EXT3_DEFM_JMODE 0x0060 | |
672 | #define EXT3_DEFM_JMODE_DATA 0x0020 | |
673 | #define EXT3_DEFM_JMODE_ORDERED 0x0040 | |
674 | #define EXT3_DEFM_JMODE_WBACK 0x0060 | |
675 | ||
676 | /* | |
677 | * Structure of a directory entry | |
678 | */ | |
679 | #define EXT3_NAME_LEN 255 | |
680 | ||
681 | struct ext3_dir_entry { | |
682 | __le32 inode; /* Inode number */ | |
683 | __le16 rec_len; /* Directory entry length */ | |
684 | __le16 name_len; /* Name length */ | |
685 | char name[EXT3_NAME_LEN]; /* File name */ | |
686 | }; | |
687 | ||
688 | /* | |
689 | * The new version of the directory entry. Since EXT3 structures are | |
690 | * stored in intel byte order, and the name_len field could never be | |
691 | * bigger than 255 chars, it's safe to reclaim the extra byte for the | |
692 | * file_type field. | |
693 | */ | |
694 | struct ext3_dir_entry_2 { | |
695 | __le32 inode; /* Inode number */ | |
696 | __le16 rec_len; /* Directory entry length */ | |
697 | __u8 name_len; /* Name length */ | |
698 | __u8 file_type; | |
699 | char name[EXT3_NAME_LEN]; /* File name */ | |
700 | }; | |
701 | ||
702 | /* | |
703 | * Ext3 directory file types. Only the low 3 bits are used. The | |
704 | * other bits are reserved for now. | |
705 | */ | |
706 | #define EXT3_FT_UNKNOWN 0 | |
707 | #define EXT3_FT_REG_FILE 1 | |
708 | #define EXT3_FT_DIR 2 | |
709 | #define EXT3_FT_CHRDEV 3 | |
710 | #define EXT3_FT_BLKDEV 4 | |
711 | #define EXT3_FT_FIFO 5 | |
712 | #define EXT3_FT_SOCK 6 | |
713 | #define EXT3_FT_SYMLINK 7 | |
714 | ||
715 | #define EXT3_FT_MAX 8 | |
716 | ||
717 | /* | |
718 | * EXT3_DIR_PAD defines the directory entries boundaries | |
719 | * | |
720 | * NOTE: It must be a multiple of 4 | |
721 | */ | |
722 | #define EXT3_DIR_PAD 4 | |
723 | #define EXT3_DIR_ROUND (EXT3_DIR_PAD - 1) | |
724 | #define EXT3_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT3_DIR_ROUND) & \ | |
725 | ~EXT3_DIR_ROUND) | |
7c06a8dc JK |
726 | #define EXT3_MAX_REC_LEN ((1<<16)-1) |
727 | ||
728 | static inline unsigned ext3_rec_len_from_disk(__le16 dlen) | |
729 | { | |
730 | unsigned len = le16_to_cpu(dlen); | |
731 | ||
732 | if (len == EXT3_MAX_REC_LEN) | |
733 | return 1 << 16; | |
734 | return len; | |
735 | } | |
736 | ||
737 | static inline __le16 ext3_rec_len_to_disk(unsigned len) | |
738 | { | |
739 | if (len == (1 << 16)) | |
740 | return cpu_to_le16(EXT3_MAX_REC_LEN); | |
741 | else if (len > (1 << 16)) | |
742 | BUG(); | |
743 | return cpu_to_le16(len); | |
744 | } | |
745 | ||
1da177e4 LT |
746 | /* |
747 | * Hash Tree Directory indexing | |
748 | * (c) Daniel Phillips, 2001 | |
749 | */ | |
750 | ||
059590f4 ES |
751 | #define is_dx(dir) (EXT3_HAS_COMPAT_FEATURE(dir->i_sb, \ |
752 | EXT3_FEATURE_COMPAT_DIR_INDEX) && \ | |
1da177e4 LT |
753 | (EXT3_I(dir)->i_flags & EXT3_INDEX_FL)) |
754 | #define EXT3_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT3_LINK_MAX) | |
755 | #define EXT3_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1) | |
1da177e4 LT |
756 | |
757 | /* Legal values for the dx_root hash_version field: */ | |
758 | ||
759 | #define DX_HASH_LEGACY 0 | |
760 | #define DX_HASH_HALF_MD4 1 | |
761 | #define DX_HASH_TEA 2 | |
5e1f8c9e TT |
762 | #define DX_HASH_LEGACY_UNSIGNED 3 |
763 | #define DX_HASH_HALF_MD4_UNSIGNED 4 | |
764 | #define DX_HASH_TEA_UNSIGNED 5 | |
1da177e4 | 765 | |
de654c97 DW |
766 | #ifdef __KERNEL__ |
767 | ||
1da177e4 LT |
768 | /* hash info structure used by the directory hash */ |
769 | struct dx_hash_info | |
770 | { | |
771 | u32 hash; | |
772 | u32 minor_hash; | |
773 | int hash_version; | |
774 | u32 *seed; | |
775 | }; | |
776 | ||
777 | #define EXT3_HTREE_EOF 0x7fffffff | |
778 | ||
1da177e4 LT |
779 | /* |
780 | * Control parameters used by ext3_htree_next_block | |
781 | */ | |
782 | #define HASH_NB_ALWAYS 1 | |
783 | ||
784 | ||
785 | /* | |
786 | * Describe an inode's exact location on disk and in memory | |
787 | */ | |
788 | struct ext3_iloc | |
789 | { | |
790 | struct buffer_head *bh; | |
791 | unsigned long offset; | |
792 | unsigned long block_group; | |
793 | }; | |
794 | ||
795 | static inline struct ext3_inode *ext3_raw_inode(struct ext3_iloc *iloc) | |
796 | { | |
797 | return (struct ext3_inode *) (iloc->bh->b_data + iloc->offset); | |
798 | } | |
799 | ||
800 | /* | |
801 | * This structure is stuffed into the struct file's private_data field | |
802 | * for directories. It is where we put information so that we can do | |
803 | * readdir operations in hash tree order. | |
804 | */ | |
805 | struct dir_private_info { | |
806 | struct rb_root root; | |
807 | struct rb_node *curr_node; | |
808 | struct fname *extra_fname; | |
809 | loff_t last_pos; | |
810 | __u32 curr_hash; | |
811 | __u32 curr_minor_hash; | |
812 | __u32 next_hash; | |
813 | }; | |
814 | ||
43d23f90 MC |
815 | /* calculate the first block number of the group */ |
816 | static inline ext3_fsblk_t | |
817 | ext3_group_first_block_no(struct super_block *sb, unsigned long group_no) | |
818 | { | |
819 | return group_no * (ext3_fsblk_t)EXT3_BLOCKS_PER_GROUP(sb) + | |
820 | le32_to_cpu(EXT3_SB(sb)->s_es->s_first_data_block); | |
821 | } | |
822 | ||
1da177e4 LT |
823 | /* |
824 | * Special error return code only used by dx_probe() and its callers. | |
825 | */ | |
826 | #define ERR_BAD_DX_DIR -75000 | |
827 | ||
828 | /* | |
829 | * Function prototypes | |
830 | */ | |
831 | ||
832 | /* | |
833 | * Ok, these declarations are also in <linux/kernel.h> but none of the | |
834 | * ext3 source programs needs to include it so they are duplicated here. | |
835 | */ | |
836 | # define NORET_TYPE /**/ | |
837 | # define ATTRIB_NORET __attribute__((noreturn)) | |
838 | # define NORET_AND noreturn, | |
839 | ||
840 | /* balloc.c */ | |
841 | extern int ext3_bg_has_super(struct super_block *sb, int group); | |
842 | extern unsigned long ext3_bg_num_gdb(struct super_block *sb, int group); | |
1c2bf374 MC |
843 | extern ext3_fsblk_t ext3_new_block (handle_t *handle, struct inode *inode, |
844 | ext3_fsblk_t goal, int *errp); | |
845 | extern ext3_fsblk_t ext3_new_blocks (handle_t *handle, struct inode *inode, | |
846 | ext3_fsblk_t goal, unsigned long *count, int *errp); | |
847 | extern void ext3_free_blocks (handle_t *handle, struct inode *inode, | |
848 | ext3_fsblk_t block, unsigned long count); | |
849 | extern void ext3_free_blocks_sb (handle_t *handle, struct super_block *sb, | |
850 | ext3_fsblk_t block, unsigned long count, | |
851 | unsigned long *pdquot_freed_blocks); | |
43d23f90 | 852 | extern ext3_fsblk_t ext3_count_free_blocks (struct super_block *); |
1da177e4 LT |
853 | extern void ext3_check_blocks_bitmap (struct super_block *); |
854 | extern struct ext3_group_desc * ext3_get_group_desc(struct super_block * sb, | |
855 | unsigned int block_group, | |
856 | struct buffer_head ** bh); | |
857 | extern int ext3_should_retry_alloc(struct super_block *sb, int *retries); | |
858 | extern void ext3_init_block_alloc_info(struct inode *); | |
859 | extern void ext3_rsv_window_add(struct super_block *sb, struct ext3_reserve_window_node *rsv); | |
860 | ||
861 | /* dir.c */ | |
862 | extern int ext3_check_dir_entry(const char *, struct inode *, | |
863 | struct ext3_dir_entry_2 *, | |
864 | struct buffer_head *, unsigned long); | |
865 | extern int ext3_htree_store_dirent(struct file *dir_file, __u32 hash, | |
866 | __u32 minor_hash, | |
867 | struct ext3_dir_entry_2 *dirent); | |
868 | extern void ext3_htree_free_dir_info(struct dir_private_info *p); | |
869 | ||
870 | /* fsync.c */ | |
871 | extern int ext3_sync_file (struct file *, struct dentry *, int); | |
872 | ||
873 | /* hash.c */ | |
874 | extern int ext3fs_dirhash(const char *name, int len, struct | |
875 | dx_hash_info *hinfo); | |
876 | ||
877 | /* ialloc.c */ | |
878 | extern struct inode * ext3_new_inode (handle_t *, struct inode *, int); | |
879 | extern void ext3_free_inode (handle_t *, struct inode *); | |
880 | extern struct inode * ext3_orphan_get (struct super_block *, unsigned long); | |
881 | extern unsigned long ext3_count_free_inodes (struct super_block *); | |
882 | extern unsigned long ext3_count_dirs (struct super_block *); | |
883 | extern void ext3_check_inodes_bitmap (struct super_block *); | |
884 | extern unsigned long ext3_count_free (struct buffer_head *, unsigned); | |
885 | ||
886 | ||
887 | /* inode.c */ | |
1c2bf374 MC |
888 | int ext3_forget(handle_t *handle, int is_metadata, struct inode *inode, |
889 | struct buffer_head *bh, ext3_fsblk_t blocknr); | |
d8733c29 AM |
890 | struct buffer_head * ext3_getblk (handle_t *, struct inode *, long, int, int *); |
891 | struct buffer_head * ext3_bread (handle_t *, struct inode *, int, int, int *); | |
89747d36 MC |
892 | int ext3_get_blocks_handle(handle_t *handle, struct inode *inode, |
893 | sector_t iblock, unsigned long maxblocks, struct buffer_head *bh_result, | |
43237b54 | 894 | int create); |
1da177e4 | 895 | |
473043dc | 896 | extern struct inode *ext3_iget(struct super_block *, unsigned long); |
a9185b41 | 897 | extern int ext3_write_inode (struct inode *, struct writeback_control *); |
1da177e4 LT |
898 | extern int ext3_setattr (struct dentry *, struct iattr *); |
899 | extern void ext3_delete_inode (struct inode *); | |
900 | extern int ext3_sync_inode (handle_t *, struct inode *); | |
901 | extern void ext3_discard_reservation (struct inode *); | |
902 | extern void ext3_dirty_inode(struct inode *); | |
903 | extern int ext3_change_inode_journal_flag(struct inode *, int); | |
904 | extern int ext3_get_inode_loc(struct inode *, struct ext3_iloc *); | |
ae76dd9a | 905 | extern int ext3_can_truncate(struct inode *inode); |
1da177e4 LT |
906 | extern void ext3_truncate (struct inode *); |
907 | extern void ext3_set_inode_flags(struct inode *); | |
28be5abb | 908 | extern void ext3_get_inode_flags(struct ext3_inode_info *); |
1da177e4 | 909 | extern void ext3_set_aops(struct inode *inode); |
68c9d702 JB |
910 | extern int ext3_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
911 | u64 start, u64 len); | |
1da177e4 LT |
912 | |
913 | /* ioctl.c */ | |
039fd8ce CM |
914 | extern long ext3_ioctl(struct file *, unsigned int, unsigned long); |
915 | extern long ext3_compat_ioctl(struct file *, unsigned int, unsigned long); | |
1da177e4 LT |
916 | |
917 | /* namei.c */ | |
918 | extern int ext3_orphan_add(handle_t *, struct inode *); | |
919 | extern int ext3_orphan_del(handle_t *, struct inode *); | |
920 | extern int ext3_htree_fill_tree(struct file *dir_file, __u32 start_hash, | |
921 | __u32 start_minor_hash, __u32 *next_hash); | |
922 | ||
923 | /* resize.c */ | |
924 | extern int ext3_group_add(struct super_block *sb, | |
925 | struct ext3_new_group_data *input); | |
926 | extern int ext3_group_extend(struct super_block *sb, | |
927 | struct ext3_super_block *es, | |
43d23f90 | 928 | ext3_fsblk_t n_blocks_count); |
1da177e4 LT |
929 | |
930 | /* super.c */ | |
931 | extern void ext3_error (struct super_block *, const char *, const char *, ...) | |
932 | __attribute__ ((format (printf, 3, 4))); | |
933 | extern void __ext3_std_error (struct super_block *, const char *, int); | |
934 | extern void ext3_abort (struct super_block *, const char *, const char *, ...) | |
935 | __attribute__ ((format (printf, 3, 4))); | |
936 | extern void ext3_warning (struct super_block *, const char *, const char *, ...) | |
937 | __attribute__ ((format (printf, 3, 4))); | |
4cf46b67 AF |
938 | extern void ext3_msg(struct super_block *, const char *, const char *, ...) |
939 | __attribute__ ((format (printf, 3, 4))); | |
1da177e4 LT |
940 | extern void ext3_update_dynamic_rev (struct super_block *sb); |
941 | ||
942 | #define ext3_std_error(sb, errno) \ | |
943 | do { \ | |
944 | if ((errno)) \ | |
d5c003b4 | 945 | __ext3_std_error((sb), __func__, (errno)); \ |
1da177e4 LT |
946 | } while (0) |
947 | ||
948 | /* | |
949 | * Inodes and files operations | |
950 | */ | |
951 | ||
952 | /* dir.c */ | |
4b6f5d20 | 953 | extern const struct file_operations ext3_dir_operations; |
1da177e4 LT |
954 | |
955 | /* file.c */ | |
c5ef1c42 | 956 | extern const struct inode_operations ext3_file_inode_operations; |
4b6f5d20 | 957 | extern const struct file_operations ext3_file_operations; |
1da177e4 LT |
958 | |
959 | /* namei.c */ | |
c5ef1c42 AV |
960 | extern const struct inode_operations ext3_dir_inode_operations; |
961 | extern const struct inode_operations ext3_special_inode_operations; | |
1da177e4 LT |
962 | |
963 | /* symlink.c */ | |
c5ef1c42 AV |
964 | extern const struct inode_operations ext3_symlink_inode_operations; |
965 | extern const struct inode_operations ext3_fast_symlink_inode_operations; | |
1da177e4 LT |
966 | |
967 | ||
968 | #endif /* __KERNEL__ */ | |
969 | ||
970 | #endif /* _LINUX_EXT3_FS_H */ |