summaryrefslogtreecommitdiff
path: root/e2fsprogs/e2fsck.h
blob: 0957f20a89ecf8e6d94d5fecbdc5269d406c04f5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
#include <sys/types.h>
#include <inttypes.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <time.h>
#include <fcntl.h>
#include <ctype.h>
#include <setjmp.h>
#include <errno.h>
#include <getopt.h>
#include <limits.h>
#include <stddef.h>
#include <assert.h>
#include <signal.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <sys/resource.h>
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/ioctl.h>
#include <termios.h>
#include <mntent.h>
#include <dirent.h>
#include "ext2fs/kernel-list.h"
#include <sys/types.h>
#include <linux/types.h>

/*
 * Now pull in the real linux/jfs.h definitions.
 */
#include "ext2fs/kernel-jbd.h"



#include "fsck.h"

#include "ext2fs/ext2_fs.h"
#include "blkid/blkid.h"
#include "ext2fs/ext2_ext_attr.h"
#include "uuid/uuid.h"
#include "busybox.h"

#ifdef HAVE_CONIO_H
#undef HAVE_TERMIOS_H
#include <conio.h>
#define read_a_char()   getch()
#else
#ifdef HAVE_TERMIOS_H
#include <termios.h>
#endif
#endif


/*
 * The last ext2fs revision level that this version of e2fsck is able to
 * support
 */
#define E2FSCK_CURRENT_REV      1

/* Used by the region allocation code */
typedef __u32 region_addr_t;
typedef struct region_struct *region_t;

struct dx_dirblock_info {
	int             type;
	blk_t           phys;
	int             flags;
	blk_t           parent;
	ext2_dirhash_t  min_hash;
	ext2_dirhash_t  max_hash;
	ext2_dirhash_t  node_min_hash;
	ext2_dirhash_t  node_max_hash;
};

/*
These defines are used in the type field of dx_dirblock_info
*/

#define DX_DIRBLOCK_ROOT        1
#define DX_DIRBLOCK_LEAF        2
#define DX_DIRBLOCK_NODE        3


/*
The following defines are used in the 'flags' field of a dx_dirblock_info
*/
#define DX_FLAG_REFERENCED      1
#define DX_FLAG_DUP_REF         2
#define DX_FLAG_FIRST           4
#define DX_FLAG_LAST            8

/*
 * E2fsck options
 */
#define E2F_OPT_READONLY        0x0001
#define E2F_OPT_PREEN           0x0002
#define E2F_OPT_YES             0x0004
#define E2F_OPT_NO              0x0008
#define E2F_OPT_TIME            0x0010
#define E2F_OPT_CHECKBLOCKS     0x0040
#define E2F_OPT_DEBUG           0x0080
#define E2F_OPT_FORCE           0x0100
#define E2F_OPT_WRITECHECK      0x0200
#define E2F_OPT_COMPRESS_DIRS   0x0400

/*
 * E2fsck flags
 */
#define E2F_FLAG_ABORT          0x0001 /* Abort signaled */
#define E2F_FLAG_CANCEL         0x0002 /* Cancel signaled */
#define E2F_FLAG_SIGNAL_MASK    0x0003
#define E2F_FLAG_RESTART        0x0004 /* Restart signaled */

#define E2F_FLAG_SETJMP_OK      0x0010 /* Setjmp valid for abort */

#define E2F_FLAG_PROG_BAR       0x0020 /* Progress bar on screen */
#define E2F_FLAG_PROG_SUPPRESS  0x0040 /* Progress suspended */
#define E2F_FLAG_JOURNAL_INODE  0x0080 /* Create a new ext3 journal inode */
#define E2F_FLAG_SB_SPECIFIED   0x0100 /* The superblock was explicitly
					* specified by the user */
#define E2F_FLAG_RESTARTED      0x0200 /* E2fsck has been restarted */
#define E2F_FLAG_RESIZE_INODE   0x0400 /* Request to recreate resize inode */


/*Don't know where these come from*/
#define READ 0
#define WRITE 1
#define cpu_to_be32(n) htonl(n)
#define be32_to_cpu(n) ntohl(n)

/*
 * We define a set of "latch groups"; these are problems which are
 * handled as a set.  The user answers once for a particular latch
 * group.
 */
#define PR_LATCH_MASK         0x0ff0 /* Latch mask */
#define PR_LATCH_BLOCK        0x0010 /* Latch for illegal blocks (pass 1) */
#define PR_LATCH_BBLOCK       0x0020 /* Latch for bad block inode blocks (pass 1) */
#define PR_LATCH_IBITMAP      0x0030 /* Latch for pass 5 inode bitmap proc. */
#define PR_LATCH_BBITMAP      0x0040 /* Latch for pass 5 inode bitmap proc. */
#define PR_LATCH_RELOC        0x0050 /* Latch for superblock relocate hint */
#define PR_LATCH_DBLOCK       0x0060 /* Latch for pass 1b dup block headers */
#define PR_LATCH_LOW_DTIME    0x0070 /* Latch for pass1 orphaned list refugees */
#define PR_LATCH_TOOBIG       0x0080 /* Latch for file to big errors */
#define PR_LATCH_OPTIMIZE_DIR 0x0090 /* Latch for optimize directories */

#define PR_LATCH(x)     ((((x) & PR_LATCH_MASK) >> 4) - 1)

/*
 * Latch group descriptor flags
 */
#define PRL_YES         0x0001  /* Answer yes */
#define PRL_NO          0x0002  /* Answer no */
#define PRL_LATCHED     0x0004  /* The latch group is latched */
#define PRL_SUPPRESS    0x0008  /* Suppress all latch group questions */

#define PRL_VARIABLE    0x000f  /* All the flags that need to be reset */

/*
 * Pre-Pass 1 errors
 */

#define PR_0_BB_NOT_GROUP       0x000001  /* Block bitmap not in group */
#define PR_0_IB_NOT_GROUP       0x000002  /* Inode bitmap not in group */
#define PR_0_ITABLE_NOT_GROUP   0x000003  /* Inode table not in group */
#define PR_0_SB_CORRUPT         0x000004  /* Superblock corrupt */
#define PR_0_FS_SIZE_WRONG      0x000005  /* Filesystem size is wrong */
#define PR_0_NO_FRAGMENTS       0x000006  /* Fragments not supported */
#define PR_0_BLOCKS_PER_GROUP   0x000007  /* Bad blocks_per_group */
#define PR_0_FIRST_DATA_BLOCK   0x000008  /* Bad first_data_block */
#define PR_0_ADD_UUID           0x000009  /* Adding UUID to filesystem */
#define PR_0_RELOCATE_HINT      0x00000A  /* Relocate hint */
#define PR_0_MISC_CORRUPT_SUPER 0x00000B  /* Miscellaneous superblock corruption */
#define PR_0_GETSIZE_ERROR      0x00000C  /* Error determing physical device size of filesystem */
#define PR_0_INODE_COUNT_WRONG  0x00000D  /* Inode count in the superblock incorrect */
#define PR_0_HURD_CLEAR_FILETYPE 0x00000E /* The Hurd does not support the filetype feature */
#define PR_0_JOURNAL_BAD_INODE  0x00000F  /* The Hurd does not support the filetype feature */
#define PR_0_JOURNAL_UNSUPP_MULTIFS 0x000010 /* The external journal has multiple filesystems (which we can't handle yet) */
#define PR_0_CANT_FIND_JOURNAL  0x000011  /* Can't find external journal */
#define PR_0_EXT_JOURNAL_BAD_SUPER 0x000012/* External journal has bad superblock */
#define PR_0_JOURNAL_BAD_UUID   0x000013  /* Superblock has a bad journal UUID */
#define PR_0_JOURNAL_UNSUPP_SUPER 0x000014 /* Journal has an unknown superblock type */
#define PR_0_JOURNAL_BAD_SUPER  0x000015  /* Journal superblock is corrupt */
#define PR_0_JOURNAL_HAS_JOURNAL 0x000016 /* Journal superblock is corrupt */
#define PR_0_JOURNAL_RECOVER_SET 0x000017 /* Superblock has recovery flag set but no journal */
#define PR_0_JOURNAL_RECOVERY_CLEAR 0x000018 /* Journal has data, but recovery flag is clear */
#define PR_0_JOURNAL_RESET_JOURNAL 0x000019 /* Ask if we should clear the journal */
#define PR_0_FS_REV_LEVEL       0x00001A  /* Filesystem revision is 0, but feature flags are set */
#define PR_0_ORPHAN_CLEAR_INODE             0x000020 /* Clearing orphan inode */
#define PR_0_ORPHAN_ILLEGAL_BLOCK_NUM       0x000021 /* Illegal block found in orphaned inode */
#define PR_0_ORPHAN_ALREADY_CLEARED_BLOCK   0x000022 /* Already cleared block found in orphaned inode */
#define PR_0_ORPHAN_ILLEGAL_HEAD_INODE      0x000023 /* Illegal orphan inode in superblock */
#define PR_0_ORPHAN_ILLEGAL_INODE           0x000024 /* Illegal inode in orphaned inode list */
#define PR_0_JOURNAL_UNSUPP_ROCOMPAT        0x000025 /* Journal has unsupported read-only feature - abort */
#define PR_0_JOURNAL_UNSUPP_INCOMPAT        0x000026 /* Journal has unsupported incompatible feature - abort */
#define PR_0_JOURNAL_UNSUPP_VERSION         0x000027 /* Journal has unsupported version number */
#define PR_0_MOVE_JOURNAL                   0x000028 /* Moving journal to hidden file */
#define PR_0_ERR_MOVE_JOURNAL               0x000029 /* Error moving journal */
#define PR_0_CLEAR_V2_JOURNAL               0x00002A /* Clearing V2 journal superblock */
#define PR_0_JOURNAL_RUN                    0x00002B /* Run journal anyway */
#define PR_0_JOURNAL_RUN_DEFAULT            0x00002C /* Run journal anyway by default */
#define PR_0_BACKUP_JNL                     0x00002D /* Backup journal inode blocks */
#define PR_0_NONZERO_RESERVED_GDT_BLOCKS    0x00002E /* Reserved blocks w/o resize_inode */
#define PR_0_CLEAR_RESIZE_INODE             0x00002F /* Resize_inode not enabled, but resize inode is non-zero */
#define PR_0_RESIZE_INODE_INVALID           0x000030 /* Resize inode invalid */

/*
 * Pass 1 errors
 */

#define PR_1_PASS_HEADER              0x010000  /* Pass 1: Checking inodes, blocks, and sizes */
#define PR_1_ROOT_NO_DIR              0x010001  /* Root directory is not an inode */
#define PR_1_ROOT_DTIME               0x010002  /* Root directory has dtime set */
#define PR_1_RESERVED_BAD_MODE        0x010003  /* Reserved inode has bad mode */
#define PR_1_ZERO_DTIME               0x010004  /* Deleted inode has zero dtime */
#define PR_1_SET_DTIME                0x010005  /* Inode in use, but dtime set */
#define PR_1_ZERO_LENGTH_DIR          0x010006  /* Zero-length directory */
#define PR_1_BB_CONFLICT              0x010007  /* Block bitmap conflicts with some other fs block */
#define PR_1_IB_CONFLICT              0x010008  /* Inode bitmap conflicts with some other fs block */
#define PR_1_ITABLE_CONFLICT          0x010009  /* Inode table conflicts with some other fs block */
#define PR_1_BB_BAD_BLOCK             0x01000A  /* Block bitmap is on a bad block */
#define PR_1_IB_BAD_BLOCK             0x01000B  /* Inode bitmap is on a bad block */
#define PR_1_BAD_I_SIZE               0x01000C  /* Inode has incorrect i_size */
#define PR_1_BAD_I_BLOCKS             0x01000D  /* Inode has incorrect i_blocks */
#define PR_1_ILLEGAL_BLOCK_NUM        0x01000E  /* Illegal block number in inode */
#define PR_1_BLOCK_OVERLAPS_METADATA  0x01000F  /* Block number overlaps fs metadata */
#define PR_1_INODE_BLOCK_LATCH        0x010010  /* Inode has illegal blocks (latch question) */
#define PR_1_TOO_MANY_BAD_BLOCKS      0x010011  /* Too many bad blocks in inode */
#define PR_1_BB_ILLEGAL_BLOCK_NUM     0x010012  /* Illegal block number in bad block inode */
#define PR_1_INODE_BBLOCK_LATCH       0x010013  /* Bad block inode has illegal blocks (latch question) */
#define PR_1_DUP_BLOCKS_PREENSTOP     0x010014  /* Duplicate or bad blocks in use! */
#define PR_1_BBINODE_BAD_METABLOCK    0x010015  /* Bad block used as bad block indirect block */
#define PR_1_BBINODE_BAD_METABLOCK_PROMPT 0x010016 /* Inconsistency can't be fixed prompt */
#define PR_1_BAD_PRIMARY_BLOCK        0x010017  /* Bad primary block */
#define PR_1_BAD_PRIMARY_BLOCK_PROMPT 0x010018  /* Bad primary block prompt */
#define PR_1_BAD_PRIMARY_SUPERBLOCK   0x010019  /* Bad primary superblock */
#define PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR 0x01001A /* Bad primary block group descriptors */
#define PR_1_BAD_SUPERBLOCK           0x01001B  /* Bad superblock in group */
#define PR_1_BAD_GROUP_DESCRIPTORS    0x01001C  /* Bad block group descriptors in group */
#define PR_1_PROGERR_CLAIMED_BLOCK    0x01001D  /* Block claimed for no reason */
#define PR_1_RELOC_BLOCK_ALLOCATE     0x01001E  /* Error allocating blocks for relocating metadata */
#define PR_1_RELOC_MEMORY_ALLOCATE    0x01001F  /* Error allocating block buffer during relocation process */
#define PR_1_RELOC_FROM_TO            0x010020  /* Relocating metadata group information from X to Y */
#define PR_1_RELOC_TO                 0x010021  /* Relocating metatdata group information to X */
#define PR_1_RELOC_READ_ERR           0x010022  /* Block read error during relocation process */
#define PR_1_RELOC_WRITE_ERR          0x010023  /* Block write error during relocation process */
#define PR_1_ALLOCATE_IBITMAP_ERROR   0x010024  /* Error allocating inode bitmap */
#define PR_1_ALLOCATE_BBITMAP_ERROR   0x010025  /* Error allocating block bitmap */
#define PR_1_ALLOCATE_ICOUNT          0x010026  /* Error allocating icount structure */
#define PR_1_ALLOCATE_DBCOUNT         0x010027  /* Error allocating dbcount */
#define PR_1_ISCAN_ERROR              0x010028  /* Error while scanning inodes */
#define PR_1_BLOCK_ITERATE            0x010029  /* Error while iterating over blocks */
#define PR_1_ICOUNT_STORE             0x01002A  /* Error while storing inode count information */
#define PR_1_ADD_DBLOCK               0x01002B  /* Error while storing directory block information */
#define PR_1_READ_INODE               0x01002C  /* Error while reading inode (for clearing) */
#define PR_1_SUPPRESS_MESSAGES        0x01002D  /* Suppress messages prompt */
#define PR_1_SET_IMAGIC    0x01002F  /* Imagic flag set on an inode when filesystem doesn't support it */
#define PR_1_SET_IMMUTABLE            0x010030  /* Immutable flag set on a device or socket inode */
#define PR_1_COMPR_SET                0x010031  /* Compression flag set on a non-compressed filesystem */
#define PR_1_SET_NONZSIZE             0x010032  /* Non-zero size on on device, fifo or socket inode */
#define PR_1_FS_REV_LEVEL             0x010033  /* Filesystem revision is 0, but feature flags are set */
#define PR_1_JOURNAL_INODE_NOT_CLEAR  0x010034  /* Journal inode not in use, needs clearing */
#define PR_1_JOURNAL_BAD_MODE         0x010035  /* Journal inode has wrong mode */
#define PR_1_LOW_DTIME                0x010036  /* Inode that was part of orphan linked list */
#define PR_1_ORPHAN_LIST_REFUGEES     0x010037  /* Latch question which asks how to deal with low dtime inodes */
#define PR_1_ALLOCATE_REFCOUNT        0x010038  /* Error allocating refcount structure */
#define PR_1_READ_EA_BLOCK            0x010039  /* Error reading Extended Attribute block */
#define PR_1_BAD_EA_BLOCK             0x01003A  /* Invalid Extended Attribute block */
#define PR_1_EXTATTR_READ_ABORT   0x01003B  /* Error reading Extended Attribute block while fixing refcount -- abort */
#define PR_1_EXTATTR_REFCOUNT         0x01003C  /* Extended attribute reference count incorrect */
#define PR_1_EXTATTR_WRITE            0x01003D  /* Error writing Extended Attribute block while fixing refcount */
#define PR_1_EA_MULTI_BLOCK           0x01003E  /* Multiple EA blocks not supported */
#define PR_1_EA_ALLOC_REGION          0x01003F  /* Error allocating EA region allocation structure */
#define PR_1_EA_ALLOC_COLLISION       0x010040  /* Error EA allocation collision */
#define PR_1_EA_BAD_NAME              0x010041  /* Bad extended attribute name */
#define PR_1_EA_BAD_VALUE             0x010042  /* Bad extended attribute value */
#define PR_1_INODE_TOOBIG             0x010043  /* Inode too big (latch question) */
#define PR_1_TOOBIG_DIR               0x010044  /* Directory too big */
#define PR_1_TOOBIG_REG               0x010045  /* Regular file too big */
#define PR_1_TOOBIG_SYMLINK           0x010046  /* Symlink too big */
#define PR_1_HTREE_SET                0x010047  /* INDEX_FL flag set on a non-HTREE filesystem */
#define PR_1_HTREE_NODIR              0x010048  /* INDEX_FL flag set on a non-directory */
#define PR_1_HTREE_BADROOT            0x010049  /* Invalid root node in HTREE directory */
#define PR_1_HTREE_HASHV              0x01004A  /* Unsupported hash version in HTREE directory */
#define PR_1_HTREE_INCOMPAT           0x01004B  /* Incompatible flag in HTREE root node */
#define PR_1_HTREE_DEPTH              0x01004C  /* HTREE too deep */
#define PR_1_BB_FS_BLOCK   0x01004D  /* Bad block has indirect block that conflicts with filesystem block */
#define PR_1_RESIZE_INODE_CREATE      0x01004E  /* Resize inode failed */
#define PR_1_EXTRA_ISIZE              0x01004F  /* inode->i_size is too long */
#define PR_1_ATTR_NAME_LEN            0x010050  /* attribute name is too long */
#define PR_1_ATTR_VALUE_OFFSET        0x010051  /* wrong EA value offset */
#define PR_1_ATTR_VALUE_BLOCK         0x010052  /* wrong EA blocknumber */
#define PR_1_ATTR_VALUE_SIZE          0x010053  /* wrong EA value size */
#define PR_1_ATTR_HASH                0x010054  /* wrong EA hash value */

/*
 * Pass 1b errors
 */

#define PR_1B_PASS_HEADER       0x011000  /* Pass 1B: Rescan for duplicate/bad blocks */
#define PR_1B_DUP_BLOCK_HEADER  0x011001  /* Duplicate/bad block(s) header */
#define PR_1B_DUP_BLOCK         0x011002  /* Duplicate/bad block(s) in inode */
#define PR_1B_DUP_BLOCK_END     0x011003  /* Duplicate/bad block(s) end */
#define PR_1B_ISCAN_ERROR       0x011004  /* Error while scanning inodes */
#define PR_1B_ALLOCATE_IBITMAP_ERROR 0x011005  /* Error allocating inode bitmap */
#define PR_1B_BLOCK_ITERATE     0x0110006  /* Error while iterating over blocks */
#define PR_1B_ADJ_EA_REFCOUNT   0x0110007  /* Error adjusting EA refcount */
#define PR_1C_PASS_HEADER       0x012000  /* Pass 1C: Scan directories for inodes with dup blocks. */
#define PR_1D_PASS_HEADER       0x013000  /* Pass 1D: Reconciling duplicate blocks */
#define PR_1D_DUP_FILE          0x013001  /* File has duplicate blocks */
#define PR_1D_DUP_FILE_LIST     0x013002  /* List of files sharing duplicate blocks */
#define PR_1D_SHARE_METADATA    0x013003  /* File sharing blocks with filesystem metadata  */
#define PR_1D_NUM_DUP_INODES    0x013004  /* Report of how many duplicate/bad inodes */
#define PR_1D_DUP_BLOCKS_DEALT  0x013005  /* Duplicated blocks already reassigned or cloned. */
#define PR_1D_CLONE_QUESTION    0x013006  /* Clone duplicate/bad blocks? */
#define PR_1D_DELETE_QUESTION   0x013007  /* Delete file? */
#define PR_1D_CLONE_ERROR       0x013008  /* Couldn't clone file (error) */

/*
 * Pass 2 errors
 */

#define PR_2_PASS_HEADER        0x020000  /* Pass 2: Checking directory structure */
#define PR_2_BAD_INODE_DOT      0x020001  /* Bad inode number for '.' */
#define PR_2_BAD_INO            0x020002  /* Directory entry has bad inode number */
#define PR_2_UNUSED_INODE       0x020003  /* Directory entry has deleted or unused inode */
#define PR_2_LINK_DOT           0x020004  /* Directry entry is link to '.' */
#define PR_2_BB_INODE           0x020005  /* Directory entry points to inode now located in a bad block */
#define PR_2_LINK_DIR           0x020006  /* Directory entry contains a link to a directory */
#define PR_2_LINK_ROOT          0x020007  /* Directory entry contains a link to the root directry */
#define PR_2_BAD_NAME           0x020008  /* Directory entry has illegal characters in its name */
#define PR_2_MISSING_DOT        0x020009  /* Missing '.' in directory inode */
#define PR_2_MISSING_DOT_DOT    0x02000A  /* Missing '..' in directory inode */
#define PR_2_1ST_NOT_DOT        0x02000B  /* First entry in directory inode doesn't contain '.' */
#define PR_2_2ND_NOT_DOT_DOT    0x02000C  /* Second entry in directory inode doesn't contain '..' */
#define PR_2_FADDR_ZERO         0x02000D  /* i_faddr should be zero */
#define PR_2_FILE_ACL_ZERO      0x02000E  /* i_file_acl should be zero */
#define PR_2_DIR_ACL_ZERO       0x02000F  /* i_dir_acl should be zero */
#define PR_2_FRAG_ZERO          0x020010  /* i_frag should be zero */
#define PR_2_FSIZE_ZERO         0x020011  /* i_fsize should be zero */
#define PR_2_BAD_MODE           0x020012  /* inode has bad mode */
#define PR_2_DIR_CORRUPTED      0x020013  /* directory corrupted */
#define PR_2_FILENAME_LONG      0x020014  /* filename too long */
#define PR_2_DIRECTORY_HOLE     0x020015  /* Directory inode has a missing block (hole) */
#define PR_2_DOT_NULL_TERM      0x020016  /* '.' is not NULL terminated */
#define PR_2_DOT_DOT_NULL_TERM  0x020017  /* '..' is not NULL terminated */
#define PR_2_BAD_CHAR_DEV       0x020018  /* Illegal character device in inode */
#define PR_2_BAD_BLOCK_DEV      0x020019  /* Illegal block device in inode */
#define PR_2_DUP_DOT            0x02001A  /* Duplicate '.' entry */
#define PR_2_DUP_DOT_DOT        0x02001B  /* Duplicate '..' entry */
#define PR_2_NO_DIRINFO         0x02001C  /* Internal error: couldn't find dir_info */
#define PR_2_FINAL_RECLEN       0x02001D  /* Final rec_len is wrong */
#define PR_2_ALLOCATE_ICOUNT    0x02001E  /* Error allocating icount structure */
#define PR_2_DBLIST_ITERATE     0x02001F  /* Error iterating over directory blocks */
#define PR_2_READ_DIRBLOCK      0x020020  /* Error reading directory block */
#define PR_2_WRITE_DIRBLOCK     0x020021  /* Error writing directory block */
#define PR_2_ALLOC_DIRBOCK      0x020022  /* Error allocating new directory block */
#define PR_2_DEALLOC_INODE      0x020023  /* Error deallocating inode */
#define PR_2_SPLIT_DOT          0x020024  /* Directory entry for '.' is big.  Split? */
#define PR_2_BAD_FIFO           0x020025  /* Illegal FIFO */
#define PR_2_BAD_SOCKET         0x020026  /* Illegal socket */
#define PR_2_SET_FILETYPE       0x020027  /* Directory filetype not set */
#define PR_2_BAD_FILETYPE       0x020028  /* Directory filetype incorrect */
#define PR_2_CLEAR_FILETYPE     0x020029  /* Directory filetype set when it shouldn't be */
#define PR_2_NULL_NAME          0x020030  /* Directory filename can't be zero-length  */
#define PR_2_INVALID_SYMLINK    0x020031  /* Invalid symlink */
#define PR_2_FILE_ACL_BAD       0x020032  /* i_file_acl (extended attribute) is bad */
#define PR_2_FEATURE_LARGE_FILES 0x020033  /* Filesystem contains large files, but has no such flag in sb */
#define PR_2_HTREE_NOTREF       0x020034  /* Node in HTREE directory not referenced */
#define PR_2_HTREE_DUPREF       0x020035  /* Node in HTREE directory referenced twice */
#define PR_2_HTREE_MIN_HASH     0x020036  /* Node in HTREE directory has bad min hash */
#define PR_2_HTREE_MAX_HASH     0x020037  /* Node in HTREE directory has bad max hash */
#define PR_2_HTREE_CLEAR        0x020038  /* Clear invalid HTREE directory */
#define PR_2_HTREE_BADBLK       0x02003A  /* Bad block in htree interior node */
#define PR_2_ADJ_EA_REFCOUNT    0x02003B  /* Error adjusting EA refcount */
#define PR_2_HTREE_BAD_ROOT     0x02003C  /* Invalid HTREE root node */
#define PR_2_HTREE_BAD_LIMIT    0x02003D  /* Invalid HTREE limit */
#define PR_2_HTREE_BAD_COUNT    0x02003E  /* Invalid HTREE count */
#define PR_2_HTREE_HASH_ORDER   0x02003F  /* HTREE interior node has out-of-order hashes in table */
#define PR_2_HTREE_BAD_DEPTH    0x020040  /* Node in HTREE directory has bad depth */
#define PR_2_DUPLICATE_DIRENT   0x020041  /* Duplicate directory entry found */
#define PR_2_NON_UNIQUE_FILE    0x020042  /* Non-unique filename found */
#define PR_2_REPORT_DUP_DIRENT  0x020043  /* Duplicate directory entry found */

/*
 * Pass 3 errors
 */

#define PR_3_PASS_HEADER            0x030000  /* Pass 3: Checking directory connectivity */
#define PR_3_NO_ROOT_INODE          0x030001  /* Root inode not allocated */
#define PR_3_EXPAND_LF_DIR          0x030002  /* No room in lost+found */
#define PR_3_UNCONNECTED_DIR        0x030003  /* Unconnected directory inode */
#define PR_3_NO_LF_DIR              0x030004  /* /lost+found not found */
#define PR_3_BAD_DOT_DOT            0x030005  /* .. entry is incorrect */
#define PR_3_NO_LPF                 0x030006  /* Bad or non-existent /lost+found.  Cannot reconnect */
#define PR_3_CANT_EXPAND_LPF        0x030007  /* Could not expand /lost+found */
#define PR_3_CANT_RECONNECT         0x030008  /* Could not reconnect inode */
#define PR_3_ERR_FIND_LPF           0x030009  /* Error while trying to find /lost+found */
#define PR_3_ERR_LPF_NEW_BLOCK      0x03000A  /* Error in ext2fs_new_block while creating /lost+found */
#define PR_3_ERR_LPF_NEW_INODE      0x03000B  /* Error in ext2fs_new_inode while creating /lost+found */
#define PR_3_ERR_LPF_NEW_DIR_BLOCK  0x03000C  /* Error in ext2fs_new_dir_block while creating /lost+found */
#define PR_3_ERR_LPF_WRITE_BLOCK    0x03000D  /* Error while writing directory block for /lost+found */
#define PR_3_ADJUST_INODE           0x03000E  /* Error while adjusting inode count */
#define PR_3_FIX_PARENT_ERR         0x03000F  /* Couldn't fix parent directory -- error */
#define PR_3_FIX_PARENT_NOFIND      0x030010  /* Couldn't fix parent directory -- couldn't find it */
#define PR_3_ALLOCATE_IBITMAP_ERROR 0x030011  /* Error allocating inode bitmap */
#define PR_3_CREATE_ROOT_ERROR      0x030012  /* Error creating root directory */
#define PR_3_CREATE_LPF_ERROR       0x030013  /* Error creating lost and found directory */
#define PR_3_ROOT_NOT_DIR_ABORT     0x030014  /* Root inode is not directory; aborting */
#define PR_3_NO_ROOT_INODE_ABORT    0x030015  /* Cannot proceed without a root inode. */
#define PR_3_NO_DIRINFO             0x030016  /* Internal error: couldn't find dir_info */
#define PR_3_LPF_NOTDIR             0x030017  /* Lost+found is not a directory */

/*
 * Pass 3a --- rehashing diretories
 */
#define PR_3A_PASS_HEADER         0x031000  /* Pass 3a: Reindexing directories */
#define PR_3A_OPTIMIZE_ITER       0x031001  /* Error iterating over directories */
#define PR_3A_OPTIMIZE_DIR_ERR    0x031002  /* Error rehash directory */
#define PR_3A_OPTIMIZE_DIR_HEADER 0x031003  /* Rehashing dir header */
#define PR_3A_OPTIMIZE_DIR        0x031004  /* Rehashing directory %d */
#define PR_3A_OPTIMIZE_DIR_END    0x031005  /* Rehashing dir end */

/*
 * Pass 4 errors
 */

#define PR_4_PASS_HEADER        0x040000  /* Pass 4: Checking reference counts */
#define PR_4_ZERO_LEN_INODE     0x040001  /* Unattached zero-length inode */
#define PR_4_UNATTACHED_INODE   0x040002  /* Unattached inode */
#define PR_4_BAD_REF_COUNT      0x040003  /* Inode ref count wrong */
#define PR_4_INCONSISTENT_COUNT 0x040004  /* Inconsistent inode count information cached */

/*
 * Pass 5 errors
 */

#define PR_5_PASS_HEADER            0x050000  /* Pass 5: Checking group summary information */
#define PR_5_INODE_BMAP_PADDING     0x050001  /* Padding at end of inode bitmap is not set. */
#define PR_5_BLOCK_BMAP_PADDING     0x050002  /* Padding at end of block bitmap is not set. */
#define PR_5_BLOCK_BITMAP_HEADER    0x050003  /* Block bitmap differences header */
#define PR_5_BLOCK_UNUSED           0x050004  /* Block not used, but marked in bitmap */
#define PR_5_BLOCK_USED             0x050005  /* Block used, but not marked used in bitmap */
#define PR_5_BLOCK_BITMAP_END       0x050006  /* Block bitmap differences end */
#define PR_5_INODE_BITMAP_HEADER    0x050007  /* Inode bitmap differences header */
#define PR_5_INODE_UNUSED           0x050008  /* Inode not used, but marked in bitmap */
#define PR_5_INODE_USED             0x050009  /* Inode used, but not marked used in bitmap */
#define PR_5_INODE_BITMAP_END       0x05000A  /* Inode bitmap differences end */
#define PR_5_FREE_INODE_COUNT_GROUP 0x05000B  /* Free inodes count for group wrong */
#define PR_5_FREE_DIR_COUNT_GROUP   0x05000C  /* Directories count for group wrong */
#define PR_5_FREE_INODE_COUNT       0x05000D  /* Free inodes count wrong */
#define PR_5_FREE_BLOCK_COUNT_GROUP 0x05000E  /* Free blocks count for group wrong */
#define PR_5_FREE_BLOCK_COUNT       0x05000F  /* Free blocks count wrong */
#define PR_5_BMAP_ENDPOINTS         0x050010  /* Programming error: bitmap endpoints don't match */
#define PR_5_FUDGE_BITMAP_ERROR     0x050011  /* Internal error: fudging end of bitmap */
#define PR_5_COPY_IBITMAP_ERROR     0x050012  /* Error copying in replacement inode bitmap */
#define PR_5_COPY_BBITMAP_ERROR     0x050013  /* Error copying in replacement block bitmap */
#define PR_5_BLOCK_RANGE_UNUSED     0x050014  /* Block range not used, but marked in bitmap */
#define PR_5_BLOCK_RANGE_USED       0x050015  /* Block range used, but not marked used in bitmap */
#define PR_5_INODE_RANGE_UNUSED     0x050016  /* Inode range not used, but marked in bitmap */
#define PR_5_INODE_RANGE_USED       0x050017  /* Inode rangeused, but not marked used in bitmap */


/*
 * The directory information structure; stores directory information
 * collected in earlier passes, to avoid disk i/o in fetching the
 * directory information.
 */
struct dir_info {
	ext2_ino_t              ino;    /* Inode number */
	ext2_ino_t              dotdot; /* Parent according to '..' */
	ext2_ino_t              parent; /* Parent according to treewalk */
};



/*
 * The indexed directory information structure; stores information for
 * directories which contain a hash tree index.
 */
struct dx_dir_info {
	ext2_ino_t              ino;            /* Inode number */
	int                     numblocks;      /* number of blocks */
	int                     hashversion;
	short                   depth;          /* depth of tree */
	struct dx_dirblock_info *dx_block;      /* Array of size numblocks */
};

/*
 * Define the extended attribute refcount structure
 */
typedef struct ea_refcount *ext2_refcount_t;

struct e2fsck_struct {
	ext2_filsys fs;
	const char *program_name;
	char *filesystem_name;
	char *device_name;
	char *io_options;
	int     flags;          /* E2fsck internal flags */
	int     options;
	blk_t   use_superblock; /* sb requested by user */
	blk_t   superblock;     /* sb used to open fs */
	int     blocksize;      /* blocksize */
	blk_t   num_blocks;     /* Total number of blocks */
	int     mount_flags;
	blkid_cache blkid;      /* blkid cache */

	jmp_buf abort_loc;

	unsigned long abort_code;

	int (*progress)(e2fsck_t ctx, int pass, unsigned long cur,
			unsigned long max);

	ext2fs_inode_bitmap inode_used_map; /* Inodes which are in use */
	ext2fs_inode_bitmap inode_bad_map; /* Inodes which are bad somehow */
	ext2fs_inode_bitmap inode_dir_map; /* Inodes which are directories */
	ext2fs_inode_bitmap inode_bb_map; /* Inodes which are in bad blocks */
	ext2fs_inode_bitmap inode_imagic_map; /* AFS inodes */
	ext2fs_inode_bitmap inode_reg_map; /* Inodes which are regular files*/

	ext2fs_block_bitmap block_found_map; /* Blocks which are in use */
	ext2fs_block_bitmap block_dup_map; /* Blks referenced more than once */
	ext2fs_block_bitmap block_ea_map; /* Blocks which are used by EA's */

	/*
	 * Inode count arrays
	 */
	ext2_icount_t   inode_count;
	ext2_icount_t inode_link_info;

	ext2_refcount_t refcount;
	ext2_refcount_t refcount_extra;

	/*
	 * Array of flags indicating whether an inode bitmap, block
	 * bitmap, or inode table is invalid
	 */
	int *invalid_inode_bitmap_flag;
	int *invalid_block_bitmap_flag;
	int *invalid_inode_table_flag;
	int invalid_bitmaps;    /* There are invalid bitmaps/itable */

	/*
	 * Block buffer
	 */
	char *block_buf;

	/*
	 * For pass1_check_directory and pass1_get_blocks
	 */
	ext2_ino_t stashed_ino;
	struct ext2_inode *stashed_inode;

	/*
	 * Location of the lost and found directory
	 */
	ext2_ino_t lost_and_found;
	int bad_lost_and_found;

	/*
	 * Directory information
	 */
	int             dir_info_count;
	int             dir_info_size;
	struct dir_info *dir_info;

	/*
	 * Indexed directory information
	 */
	int             dx_dir_info_count;
	int             dx_dir_info_size;
	struct dx_dir_info *dx_dir_info;

	/*
	 * Directories to hash
	 */
	ext2_u32_list   dirs_to_hash;

	/*
	 * Tuning parameters
	 */
	int process_inode_size;
	int inode_buffer_blocks;

	/*
	 * ext3 journal support
	 */
	io_channel      journal_io;
	char    *journal_name;

	/*
	 * How we display the progress update (for unix)
	 */
	int progress_fd;
	int progress_pos;
	int progress_last_percent;
	unsigned int progress_last_time;
	int interactive;        /* Are we connected directly to a tty? */
	char start_meta[2], stop_meta[2];

	/* File counts */
	int fs_directory_count;
	int fs_regular_count;
	int fs_blockdev_count;
	int fs_chardev_count;
	int fs_links_count;
	int fs_symlinks_count;
	int fs_fast_symlinks_count;
	int fs_fifo_count;
	int fs_total_count;
	int fs_badblocks_count;
	int fs_sockets_count;
	int fs_ind_count;
	int fs_dind_count;
	int fs_tind_count;
	int fs_fragmented;
	int large_files;
	int fs_ext_attr_inodes;
	int fs_ext_attr_blocks;

	int ext_attr_ver;

	/*
	 * For the use of callers of the e2fsck functions; not used by
	 * e2fsck functions themselves.
	 */
	void *priv_data;
};



static inline int tid_gt(tid_t x, tid_t y)
{
	int difference = (x - y);
	return (difference > 0);
}

static inline int tid_geq(tid_t x, tid_t y)
{
	int difference = (x - y);
	return (difference >= 0);
}