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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
24
25
26
27
28
29#undef EXT3FS_DEBUG
30
31
32
33
34#define EXT3_DEFAULT_RESERVE_BLOCKS 8
35
36#define EXT3_MAX_RESERVE_BLOCKS 1027
37#define EXT3_RESERVE_WINDOW_NOT_ALLOCATED 0
38
39
40
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
55
56#define EXT3_BAD_INO 1
57#define EXT3_ROOT_INO 2
58#define EXT3_BOOT_LOADER_INO 5
59#define EXT3_UNDEL_DIR_INO 6
60#define EXT3_RESIZE_INO 7
61#define EXT3_JOURNAL_INO 8
62
63
64#define EXT3_GOOD_OLD_FIRST_INO 11
65
66
67
68
69#define EXT3_LINK_MAX 32000
70
71
72
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
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
117
118struct ext3_group_desc
119{
120 __le32 bg_block_bitmap;
121 __le32 bg_inode_bitmap;
122 __le32 bg_inode_table;
123 __le16 bg_free_blocks_count;
124 __le16 bg_free_inodes_count;
125 __le16 bg_used_dirs_count;
126 __u16 bg_pad;
127 __le32 bg_reserved[3];
128};
129
130
131
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
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
155
156#define EXT3_SECRM_FL 0x00000001
157#define EXT3_UNRM_FL 0x00000002
158#define EXT3_COMPR_FL 0x00000004
159#define EXT3_SYNC_FL 0x00000008
160#define EXT3_IMMUTABLE_FL 0x00000010
161#define EXT3_APPEND_FL 0x00000020
162#define EXT3_NODUMP_FL 0x00000040
163#define EXT3_NOATIME_FL 0x00000080
164
165#define EXT3_DIRTY_FL 0x00000100
166#define EXT3_COMPRBLK_FL 0x00000200
167#define EXT3_NOCOMPR_FL 0x00000400
168#define EXT3_ECOMPR_FL 0x00000800
169
170#define EXT3_INDEX_FL 0x00001000
171#define EXT3_IMAGIC_FL 0x00002000
172#define EXT3_JOURNAL_DATA_FL 0x00004000
173#define EXT3_NOTAIL_FL 0x00008000
174#define EXT3_DIRSYNC_FL 0x00010000
175#define EXT3_TOPDIR_FL 0x00020000
176#define EXT3_RESERVED_FL 0x80000000
177
178#define EXT3_FL_USER_VISIBLE 0x0003DFFF
179#define EXT3_FL_USER_MODIFIABLE 0x000380FF
180
181
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
189#define EXT3_REG_FLMASK (~(EXT3_DIRSYNC_FL | EXT3_TOPDIR_FL))
190
191
192#define EXT3_OTHER_FLMASK (EXT3_NODUMP_FL | EXT3_NOATIME_FL)
193
194
195static 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
206struct ext3_new_group_input {
207 __u32 group;
208 __u32 block_bitmap;
209 __u32 inode_bitmap;
210 __u32 inode_table;
211 __u32 blocks_count;
212 __u16 reserved_blocks;
213 __u16 unused;
214};
215
216
217struct 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
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
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
265
266struct 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
279
280struct ext3_inode {
281 __le16 i_mode;
282 __le16 i_uid;
283 __le32 i_size;
284 __le32 i_atime;
285 __le32 i_ctime;
286 __le32 i_mtime;
287 __le32 i_dtime;
288 __le16 i_gid;
289 __le16 i_links_count;
290 __le32 i_blocks;
291 __le32 i_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;
303 __le32 i_block[EXT3_N_BLOCKS];
304 __le32 i_generation;
305 __le32 i_file_acl;
306 __le32 i_dir_acl;
307 __le32 i_faddr;
308 union {
309 struct {
310 __u8 l_i_frag;
311 __u8 l_i_fsize;
312 __u16 i_pad1;
313 __le16 l_i_uid_high;
314 __le16 l_i_gid_high;
315 __u32 l_i_reserved2;
316 } linux2;
317 struct {
318 __u8 h_i_frag;
319 __u8 h_i_fsize;
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;
327 __u8 m_i_fsize;
328 __u16 m_pad1;
329 __u32 m_i_reserved2[2];
330 } masix2;
331 } osd2;
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
365
366
367
368
369#define EXT3_VALID_FS 0x0001
370#define EXT3_ERROR_FS 0x0002
371#define EXT3_ORPHAN_FS 0x0004
372
373
374
375
376#define EXT2_FLAGS_SIGNED_HASH 0x0001
377#define EXT2_FLAGS_UNSIGNED_HASH 0x0002
378#define EXT2_FLAGS_TEST_FILESYS 0x0004
379
380
381
382
383#define EXT3_MOUNT_CHECK 0x00001
384#define EXT3_MOUNT_OLDALLOC 0x00002
385#define EXT3_MOUNT_GRPID 0x00004
386#define EXT3_MOUNT_DEBUG 0x00008
387#define EXT3_MOUNT_ERRORS_CONT 0x00010
388#define EXT3_MOUNT_ERRORS_RO 0x00020
389#define EXT3_MOUNT_ERRORS_PANIC 0x00040
390#define EXT3_MOUNT_MINIX_DF 0x00080
391#define EXT3_MOUNT_NOLOAD 0x00100
392#define EXT3_MOUNT_ABORT 0x00200
393#define EXT3_MOUNT_DATA_FLAGS 0x00C00
394#define EXT3_MOUNT_JOURNAL_DATA 0x00400
395#define EXT3_MOUNT_ORDERED_DATA 0x00800
396#define EXT3_MOUNT_WRITEBACK_DATA 0x00C00
397#define EXT3_MOUNT_UPDATE_JOURNAL 0x01000
398#define EXT3_MOUNT_NO_UID32 0x02000
399#define EXT3_MOUNT_XATTR_USER 0x04000
400#define EXT3_MOUNT_POSIX_ACL 0x08000
401#define EXT3_MOUNT_RESERVATION 0x10000
402#define EXT3_MOUNT_BARRIER 0x20000
403#define EXT3_MOUNT_QUOTA 0x80000
404#define EXT3_MOUNT_USRQUOTA 0x100000
405#define EXT3_MOUNT_GRPQUOTA 0x200000
406#define EXT3_MOUNT_DATA_ERR_ABORT 0x400000
407
408
409
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 ext2_set_bit
422#define ext3_set_bit_atomic ext2_set_bit_atomic
423#define ext3_clear_bit ext2_clear_bit
424#define ext3_clear_bit_atomic ext2_clear_bit_atomic
425#define ext3_test_bit ext2_test_bit
426#define ext3_find_first_zero_bit ext2_find_first_zero_bit
427#define ext3_find_next_zero_bit ext2_find_next_zero_bit
428
429
430
431
432#define EXT3_DFL_MAX_MNT_COUNT 20
433#define EXT3_DFL_CHECKINTERVAL 0
434
435
436
437
438#define EXT3_ERRORS_CONTINUE 1
439#define EXT3_ERRORS_RO 2
440#define EXT3_ERRORS_PANIC 3
441#define EXT3_ERRORS_DEFAULT EXT3_ERRORS_CONTINUE
442
443
444
445
446struct ext3_super_block {
447 __le32 s_inodes_count;
448 __le32 s_blocks_count;
449 __le32 s_r_blocks_count;
450 __le32 s_free_blocks_count;
451 __le32 s_free_inodes_count;
452 __le32 s_first_data_block;
453 __le32 s_log_block_size;
454 __le32 s_log_frag_size;
455 __le32 s_blocks_per_group;
456 __le32 s_frags_per_group;
457 __le32 s_inodes_per_group;
458 __le32 s_mtime;
459 __le32 s_wtime;
460 __le16 s_mnt_count;
461 __le16 s_max_mnt_count;
462 __le16 s_magic;
463 __le16 s_state;
464 __le16 s_errors;
465 __le16 s_minor_rev_level;
466 __le32 s_lastcheck;
467 __le32 s_checkinterval;
468 __le32 s_creator_os;
469 __le32 s_rev_level;
470 __le16 s_def_resuid;
471 __le16 s_def_resgid;
472
473
474
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476
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480
481
482
483
484
485 __le32 s_first_ino;
486 __le16 s_inode_size;
487 __le16 s_block_group_nr;
488 __le32 s_feature_compat;
489 __le32 s_feature_incompat;
490 __le32 s_feature_ro_compat;
491 __u8 s_uuid[16];
492 char s_volume_name[16];
493 char s_last_mounted[64];
494 __le32 s_algorithm_usage_bitmap;
495
496
497
498
499 __u8 s_prealloc_blocks;
500 __u8 s_prealloc_dir_blocks;
501 __le16 s_reserved_gdt_blocks;
502
503
504
505 __u8 s_journal_uuid[16];
506 __le32 s_journal_inum;
507 __le32 s_journal_dev;
508 __le32 s_last_orphan;
509 __le32 s_hash_seed[4];
510 __u8 s_def_hash_version;
511 __u8 s_reserved_char_pad;
512 __u16 s_reserved_word_pad;
513 __le32 s_default_mount_opts;
514 __le32 s_first_meta_bg;
515 __le32 s_mkfs_time;
516 __le32 s_jnl_blocks[17];
517
518 __le32 s_blocks_count_hi;
519 __le32 s_r_blocks_count_hi;
520 __le32 s_free_blocks_count_hi;
521 __le16 s_min_extra_isize;
522 __le16 s_want_extra_isize;
523 __le32 s_flags;
524 __le16 s_raid_stride;
525 __le16 s_mmp_interval;
526 __le64 s_mmp_block;
527 __le32 s_raid_stripe_width;
528 __u8 s_log_groups_per_flex;
529 __u8 s_reserved_char_pad2;
530 __le16 s_reserved_pad;
531 __u32 s_reserved[162];
532};
533
534#ifdef __KERNEL__
535#include <linux/ext3_fs_i.h>
536#include <linux/ext3_fs_sb.h>
537static inline struct ext3_sb_info * EXT3_SB(struct super_block *sb)
538{
539 return sb->s_fs_info;
540}
541static inline struct ext3_inode_info *EXT3_I(struct inode *inode)
542{
543 return container_of(inode, struct ext3_inode_info, vfs_inode);
544}
545
546static 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
557
558enum {
559 EXT3_STATE_JDATA,
560 EXT3_STATE_NEW,
561 EXT3_STATE_XATTR,
562 EXT3_STATE_FLUSH_ON_CLOSE,
563};
564
565static 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
570static inline void ext3_set_inode_state(struct inode *inode, int bit)
571{
572 set_bit(bit, &EXT3_I(inode)->i_state_flags);
573}
574
575static 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
581
582
583#define EXT3_SB(sb) (sb)
584#endif
585
586#define NEXT_ORPHAN(inode) EXT3_I(inode)->i_dtime
587
588
589
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
599
600#define EXT3_GOOD_OLD_REV 0
601#define EXT3_DYNAMIC_REV 1
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
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
645#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
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
658
659#define EXT3_DEF_RESUID 0
660#define EXT3_DEF_RESGID 0
661
662
663
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
677
678#define EXT3_NAME_LEN 255
679
680struct ext3_dir_entry {
681 __le32 inode;
682 __le16 rec_len;
683 __le16 name_len;
684 char name[EXT3_NAME_LEN];
685};
686
687
688
689
690
691
692
693struct ext3_dir_entry_2 {
694 __le32 inode;
695 __le16 rec_len;
696 __u8 name_len;
697 __u8 file_type;
698 char name[EXT3_NAME_LEN];
699};
700
701
702
703
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
718
719
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
729
730
731
732static 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
743static 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
756
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
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
777struct 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
789
790#define HASH_NB_ALWAYS 1
791
792
793
794
795
796struct ext3_iloc
797{
798 struct buffer_head *bh;
799 unsigned long offset;
800 unsigned long block_group;
801};
802
803static 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
810
811
812
813struct 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
824static inline ext3_fsblk_t
825ext3_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
833
834#define ERR_BAD_DX_DIR -75000
835
836
837
838
839
840
841
842
843
844# define NORET_TYPE
845# define ATTRIB_NORET __attribute__((noreturn))
846# define NORET_AND noreturn,
847
848
849extern int ext3_bg_has_super(struct super_block *sb, int group);
850extern unsigned long ext3_bg_num_gdb(struct super_block *sb, int group);
851extern ext3_fsblk_t ext3_new_block (handle_t *handle, struct inode *inode,
852 ext3_fsblk_t goal, int *errp);
853extern ext3_fsblk_t ext3_new_blocks (handle_t *handle, struct inode *inode,
854 ext3_fsblk_t goal, unsigned long *count, int *errp);
855extern void ext3_free_blocks (handle_t *handle, struct inode *inode,
856 ext3_fsblk_t block, unsigned long count);
857extern 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);
860extern ext3_fsblk_t ext3_count_free_blocks (struct super_block *);
861extern void ext3_check_blocks_bitmap (struct super_block *);
862extern struct ext3_group_desc * ext3_get_group_desc(struct super_block * sb,
863 unsigned int block_group,
864 struct buffer_head ** bh);
865extern int ext3_should_retry_alloc(struct super_block *sb, int *retries);
866extern void ext3_init_block_alloc_info(struct inode *);
867extern void ext3_rsv_window_add(struct super_block *sb, struct ext3_reserve_window_node *rsv);
868extern int ext3_trim_fs(struct super_block *sb, struct fstrim_range *range);
869
870
871extern int ext3_check_dir_entry(const char *, struct inode *,
872 struct ext3_dir_entry_2 *,
873 struct buffer_head *, unsigned long);
874extern int ext3_htree_store_dirent(struct file *dir_file, __u32 hash,
875 __u32 minor_hash,
876 struct ext3_dir_entry_2 *dirent);
877extern void ext3_htree_free_dir_info(struct dir_private_info *p);
878
879
880extern int ext3_sync_file(struct file *, int);
881
882
883extern int ext3fs_dirhash(const char *name, int len, struct
884 dx_hash_info *hinfo);
885
886
887extern struct inode * ext3_new_inode (handle_t *, struct inode *, int);
888extern void ext3_free_inode (handle_t *, struct inode *);
889extern struct inode * ext3_orphan_get (struct super_block *, unsigned long);
890extern unsigned long ext3_count_free_inodes (struct super_block *);
891extern unsigned long ext3_count_dirs (struct super_block *);
892extern void ext3_check_inodes_bitmap (struct super_block *);
893extern unsigned long ext3_count_free (struct buffer_head *, unsigned);
894
895
896
897int ext3_forget(handle_t *handle, int is_metadata, struct inode *inode,
898 struct buffer_head *bh, ext3_fsblk_t blocknr);
899struct buffer_head * ext3_getblk (handle_t *, struct inode *, long, int, int *);
900struct buffer_head * ext3_bread (handle_t *, struct inode *, int, int, int *);
901int ext3_get_blocks_handle(handle_t *handle, struct inode *inode,
902 sector_t iblock, unsigned long maxblocks, struct buffer_head *bh_result,
903 int create);
904
905extern struct inode *ext3_iget(struct super_block *, unsigned long);
906extern int ext3_write_inode (struct inode *, struct writeback_control *);
907extern int ext3_setattr (struct dentry *, struct iattr *);
908extern void ext3_evict_inode (struct inode *);
909extern int ext3_sync_inode (handle_t *, struct inode *);
910extern void ext3_discard_reservation (struct inode *);
911extern void ext3_dirty_inode(struct inode *);
912extern int ext3_change_inode_journal_flag(struct inode *, int);
913extern int ext3_get_inode_loc(struct inode *, struct ext3_iloc *);
914extern int ext3_can_truncate(struct inode *inode);
915extern void ext3_truncate (struct inode *);
916extern void ext3_set_inode_flags(struct inode *);
917extern void ext3_get_inode_flags(struct ext3_inode_info *);
918extern void ext3_set_aops(struct inode *inode);
919extern int ext3_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
920 u64 start, u64 len);
921
922
923extern long ext3_ioctl(struct file *, unsigned int, unsigned long);
924extern long ext3_compat_ioctl(struct file *, unsigned int, unsigned long);
925
926
927extern int ext3_orphan_add(handle_t *, struct inode *);
928extern int ext3_orphan_del(handle_t *, struct inode *);
929extern int ext3_htree_fill_tree(struct file *dir_file, __u32 start_hash,
930 __u32 start_minor_hash, __u32 *next_hash);
931
932
933extern int ext3_group_add(struct super_block *sb,
934 struct ext3_new_group_data *input);
935extern int ext3_group_extend(struct super_block *sb,
936 struct ext3_super_block *es,
937 ext3_fsblk_t n_blocks_count);
938
939
940extern void ext3_error (struct super_block *, const char *, const char *, ...)
941 __attribute__ ((format (printf, 3, 4)));
942extern void __ext3_std_error (struct super_block *, const char *, int);
943extern void ext3_abort (struct super_block *, const char *, const char *, ...)
944 __attribute__ ((format (printf, 3, 4)));
945extern void ext3_warning (struct super_block *, const char *, const char *, ...)
946 __attribute__ ((format (printf, 3, 4)));
947extern void ext3_msg(struct super_block *, const char *, const char *, ...)
948 __attribute__ ((format (printf, 3, 4)));
949extern void ext3_update_dynamic_rev (struct super_block *sb);
950
951#define ext3_std_error(sb, errno) \
952do { \
953 if ((errno)) \
954 __ext3_std_error((sb), __func__, (errno)); \
955} while (0)
956
957
958
959
960
961
962extern const struct file_operations ext3_dir_operations;
963
964
965extern const struct inode_operations ext3_file_inode_operations;
966extern const struct file_operations ext3_file_operations;
967
968
969extern const struct inode_operations ext3_dir_inode_operations;
970extern const struct inode_operations ext3_special_inode_operations;
971
972
973extern const struct inode_operations ext3_symlink_inode_operations;
974extern const struct inode_operations ext3_fast_symlink_inode_operations;
975
976
977#endif
978
979#endif
980