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[thirdparty/e2fsprogs.git] / e2fsck / pass1.c
1 /*
2 * pass1.c -- pass #1 of e2fsck: sequential scan of the inode table
3 *
4 * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
5 *
6 * %Begin-Header%
7 * This file may be redistributed under the terms of the GNU Public
8 * License.
9 * %End-Header%
10 *
11 * Pass 1 of e2fsck iterates over all the inodes in the filesystems,
12 * and applies the following tests to each inode:
13 *
14 * - The mode field of the inode must be legal.
15 * - The size and block count fields of the inode are correct.
16 * - A data block must not be used by another inode
17 *
18 * Pass 1 also gathers the collects the following information:
19 *
20 * - A bitmap of which inodes are in use. (inode_used_map)
21 * - A bitmap of which inodes are directories. (inode_dir_map)
22 * - A bitmap of which inodes are regular files. (inode_reg_map)
23 * - A bitmap of which inodes have bad fields. (inode_bad_map)
24 * - A bitmap of which inodes are in bad blocks. (inode_bb_map)
25 * - A bitmap of which inodes are imagic inodes. (inode_imagic_map)
26 * - A bitmap of which inodes are casefolded. (inode_casefold_map)
27 * - A bitmap of which blocks are in use. (block_found_map)
28 * - A bitmap of which blocks are in use by two inodes (block_dup_map)
29 * - The data blocks of the directory inodes. (dir_map)
30 * - Ref counts for ea_inodes. (ea_inode_refs)
31 * - The encryption policy ID of each encrypted inode. (encrypted_files)
32 *
33 * Pass 1 is designed to stash away enough information so that the
34 * other passes should not need to read in the inode information
35 * during the normal course of a filesystem check. (Although if an
36 * inconsistency is detected, other passes may need to read in an
37 * inode to fix it.)
38 *
39 * Note that pass 1B will be invoked if there are any duplicate blocks
40 * found.
41 */
42
43 #define _GNU_SOURCE 1 /* get strnlen() */
44 #include "config.h"
45 #include <string.h>
46 #include <time.h>
47 #ifdef HAVE_ERRNO_H
48 #include <errno.h>
49 #endif
50
51 #include "e2fsck.h"
52 #include <ext2fs/ext2_ext_attr.h>
53 #include <e2p/e2p.h>
54
55 #include "problem.h"
56
57 #ifdef NO_INLINE_FUNCS
58 #define _INLINE_
59 #else
60 #define _INLINE_ inline
61 #endif
62
63 #undef DEBUG
64
65 struct ea_quota {
66 blk64_t blocks;
67 __u64 inodes;
68 };
69
70 static int process_block(ext2_filsys fs, blk64_t *blocknr,
71 e2_blkcnt_t blockcnt, blk64_t ref_blk,
72 int ref_offset, void *priv_data);
73 static int process_bad_block(ext2_filsys fs, blk64_t *block_nr,
74 e2_blkcnt_t blockcnt, blk64_t ref_blk,
75 int ref_offset, void *priv_data);
76 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
77 char *block_buf,
78 const struct ea_quota *ea_ibody_quota);
79 static void mark_table_blocks(e2fsck_t ctx);
80 static void alloc_bb_map(e2fsck_t ctx);
81 static void alloc_imagic_map(e2fsck_t ctx);
82 static void mark_inode_bad(e2fsck_t ctx, ext2_ino_t ino);
83 static void add_casefolded_dir(e2fsck_t ctx, ext2_ino_t ino);
84 static void handle_fs_bad_blocks(e2fsck_t ctx);
85 static void process_inodes(e2fsck_t ctx, char *block_buf);
86 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b);
87 static errcode_t scan_callback(ext2_filsys fs, ext2_inode_scan scan,
88 dgrp_t group, void * priv_data);
89 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
90 char *block_buf, int adjust_sign);
91 /* static char *describe_illegal_block(ext2_filsys fs, blk64_t block); */
92
93 struct process_block_struct {
94 ext2_ino_t ino;
95 unsigned is_dir:1, is_reg:1, clear:1, suppress:1,
96 fragmented:1, compressed:1, bbcheck:1,
97 inode_modified:1;
98 blk64_t num_blocks;
99 blk64_t max_blocks;
100 blk64_t last_block;
101 e2_blkcnt_t last_init_lblock;
102 e2_blkcnt_t last_db_block;
103 int num_illegal_blocks;
104 blk64_t previous_block;
105 struct ext2_inode *inode;
106 struct problem_context *pctx;
107 ext2fs_block_bitmap fs_meta_blocks;
108 e2fsck_t ctx;
109 blk64_t next_lblock;
110 struct extent_tree_info eti;
111 };
112
113 struct process_inode_block {
114 ext2_ino_t ino;
115 struct ea_quota ea_ibody_quota;
116 struct ext2_inode_large inode;
117 };
118
119 struct scan_callback_struct {
120 e2fsck_t ctx;
121 char *block_buf;
122 };
123
124 /*
125 * For the inodes to process list.
126 */
127 static struct process_inode_block *inodes_to_process;
128 static int process_inode_count;
129
130 static __u64 ext2_max_sizes[EXT2_MAX_BLOCK_LOG_SIZE -
131 EXT2_MIN_BLOCK_LOG_SIZE + 1];
132
133 /*
134 * Check to make sure a device inode is real. Returns 1 if the device
135 * checks out, 0 if not.
136 *
137 * Note: this routine is now also used to check FIFO's and Sockets,
138 * since they have the same requirement; the i_block fields should be
139 * zero.
140 */
141 int e2fsck_pass1_check_device_inode(ext2_filsys fs EXT2FS_ATTR((unused)),
142 struct ext2_inode *inode)
143 {
144 int i;
145
146 /*
147 * If the index or extents flag is set, then this is a bogus
148 * device/fifo/socket
149 */
150 if (inode->i_flags & (EXT2_INDEX_FL | EXT4_EXTENTS_FL))
151 return 0;
152
153 /*
154 * We should be able to do the test below all the time, but
155 * because the kernel doesn't forcibly clear the device
156 * inode's additional i_block fields, there are some rare
157 * occasions when a legitimate device inode will have non-zero
158 * additional i_block fields. So for now, we only complain
159 * when the immutable flag is set, which should never happen
160 * for devices. (And that's when the problem is caused, since
161 * you can't set or clear immutable flags for devices.) Once
162 * the kernel has been fixed we can change this...
163 */
164 if (inode->i_flags & (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)) {
165 for (i=4; i < EXT2_N_BLOCKS; i++)
166 if (inode->i_block[i])
167 return 0;
168 }
169 return 1;
170 }
171
172 /*
173 * Check to make sure a symlink inode is real. Returns 1 if the symlink
174 * checks out, 0 if not.
175 */
176 int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino,
177 struct ext2_inode *inode, char *buf)
178 {
179 unsigned int buflen;
180 unsigned int len;
181
182 if ((inode->i_size_high || inode->i_size == 0) ||
183 (inode->i_flags & EXT2_INDEX_FL))
184 return 0;
185
186 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
187 size_t inline_size;
188
189 if (inode->i_flags & EXT4_EXTENTS_FL)
190 return 0;
191 if (ext2fs_inline_data_size(fs, ino, &inline_size))
192 return 0;
193 if (inode->i_size != inline_size)
194 return 0;
195
196 return 1;
197 }
198
199 if (ext2fs_is_fast_symlink(inode)) {
200 if (inode->i_flags & EXT4_EXTENTS_FL)
201 return 0;
202 buf = (char *)inode->i_block;
203 buflen = sizeof(inode->i_block);
204 } else {
205 ext2_extent_handle_t handle;
206 struct ext2_extent_info info;
207 struct ext2fs_extent extent;
208 blk64_t blk;
209 int i;
210
211 if (inode->i_flags & EXT4_EXTENTS_FL) {
212 if (ext2fs_extent_open2(fs, ino, inode, &handle))
213 return 0;
214 if (ext2fs_extent_get_info(handle, &info) ||
215 (info.num_entries != 1) ||
216 (info.max_depth != 0)) {
217 ext2fs_extent_free(handle);
218 return 0;
219 }
220 if (ext2fs_extent_get(handle, EXT2_EXTENT_ROOT,
221 &extent) ||
222 (extent.e_lblk != 0) ||
223 (extent.e_len != 1)) {
224 ext2fs_extent_free(handle);
225 return 0;
226 }
227 blk = extent.e_pblk;
228 ext2fs_extent_free(handle);
229 } else {
230 blk = inode->i_block[0];
231
232 for (i = 1; i < EXT2_N_BLOCKS; i++)
233 if (inode->i_block[i])
234 return 0;
235 }
236
237 if (blk < fs->super->s_first_data_block ||
238 blk >= ext2fs_blocks_count(fs->super))
239 return 0;
240
241 if (io_channel_read_blk64(fs->io, blk, 1, buf))
242 return 0;
243
244 buflen = fs->blocksize;
245 }
246
247 if (inode->i_flags & EXT4_ENCRYPT_FL)
248 len = ext2fs_le16_to_cpu(*(__u16 *)buf) + 2;
249 else
250 len = strnlen(buf, buflen);
251
252 if (len >= buflen)
253 return 0;
254
255 if (len != inode->i_size)
256 return 0;
257 return 1;
258 }
259
260 /*
261 * If the extents or inlinedata flags are set on the inode, offer to clear 'em.
262 */
263 #define BAD_SPECIAL_FLAGS (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)
264 static void check_extents_inlinedata(e2fsck_t ctx,
265 struct problem_context *pctx)
266 {
267 if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
268 return;
269
270 if (!fix_problem(ctx, PR_1_SPECIAL_EXTENTS_IDATA, pctx))
271 return;
272
273 pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
274 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
275 }
276 #undef BAD_SPECIAL_FLAGS
277
278 /*
279 * If the immutable (or append-only) flag is set on the inode, offer
280 * to clear it.
281 */
282 #define BAD_SPECIAL_FLAGS (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)
283 static void check_immutable(e2fsck_t ctx, struct problem_context *pctx)
284 {
285 if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
286 return;
287
288 if (!fix_problem(ctx, PR_1_SET_IMMUTABLE, pctx))
289 return;
290
291 pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
292 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
293 }
294
295 /*
296 * If device, fifo or socket, check size is zero -- if not offer to
297 * clear it
298 */
299 static void check_size(e2fsck_t ctx, struct problem_context *pctx)
300 {
301 struct ext2_inode *inode = pctx->inode;
302
303 if (EXT2_I_SIZE(inode) == 0)
304 return;
305
306 if (!fix_problem(ctx, PR_1_SET_NONZSIZE, pctx))
307 return;
308
309 ext2fs_inode_size_set(ctx->fs, inode, 0);
310 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
311 }
312
313 /*
314 * For a given size, calculate how many blocks would be charged towards quota.
315 */
316 static blk64_t size_to_quota_blocks(ext2_filsys fs, size_t size)
317 {
318 blk64_t clusters;
319
320 clusters = DIV_ROUND_UP(size, fs->blocksize << fs->cluster_ratio_bits);
321 return EXT2FS_C2B(fs, clusters);
322 }
323
324 /*
325 * Check validity of EA inode. Return 0 if EA inode is valid, otherwise return
326 * the problem code.
327 */
328 static problem_t check_large_ea_inode(e2fsck_t ctx,
329 struct ext2_ext_attr_entry *entry,
330 struct problem_context *pctx,
331 blk64_t *quota_blocks)
332 {
333 struct ext2_inode inode;
334 __u32 hash;
335 errcode_t retval;
336
337 /* Check if inode is within valid range */
338 if ((entry->e_value_inum < EXT2_FIRST_INODE(ctx->fs->super)) ||
339 (entry->e_value_inum > ctx->fs->super->s_inodes_count)) {
340 pctx->num = entry->e_value_inum;
341 return PR_1_ATTR_VALUE_EA_INODE;
342 }
343
344 e2fsck_read_inode(ctx, entry->e_value_inum, &inode, "pass1");
345
346 retval = ext2fs_ext_attr_hash_entry2(ctx->fs, entry, NULL, &hash);
347 if (retval) {
348 com_err("check_large_ea_inode", retval,
349 _("while hashing entry with e_value_inum = %u"),
350 entry->e_value_inum);
351 fatal_error(ctx, 0);
352 }
353
354 if (hash == entry->e_hash) {
355 *quota_blocks = size_to_quota_blocks(ctx->fs,
356 entry->e_value_size);
357 } else {
358 /* This might be an old Lustre-style ea_inode reference. */
359 if (inode.i_mtime == pctx->ino &&
360 inode.i_generation == pctx->inode->i_generation) {
361 *quota_blocks = 0;
362 } else {
363 /* If target inode is also missing EA_INODE flag,
364 * this is likely to be a bad reference.
365 */
366 if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
367 pctx->num = entry->e_value_inum;
368 return PR_1_ATTR_VALUE_EA_INODE;
369 } else {
370 pctx->num = entry->e_hash;
371 return PR_1_ATTR_HASH;
372 }
373 }
374 }
375
376 if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
377 pctx->num = entry->e_value_inum;
378 if (fix_problem(ctx, PR_1_ATTR_SET_EA_INODE_FL, pctx)) {
379 inode.i_flags |= EXT4_EA_INODE_FL;
380 ext2fs_write_inode(ctx->fs, entry->e_value_inum,
381 &inode);
382 } else {
383 return PR_1_ATTR_NO_EA_INODE_FL;
384 }
385 }
386 return 0;
387 }
388
389 static void inc_ea_inode_refs(e2fsck_t ctx, struct problem_context *pctx,
390 struct ext2_ext_attr_entry *first, void *end)
391 {
392 struct ext2_ext_attr_entry *entry = first;
393 struct ext2_ext_attr_entry *np = EXT2_EXT_ATTR_NEXT(entry);
394
395 while ((void *) entry < end && (void *) np < end &&
396 !EXT2_EXT_IS_LAST_ENTRY(entry)) {
397 if (!entry->e_value_inum)
398 goto next;
399 if (!ctx->ea_inode_refs) {
400 pctx->errcode = ea_refcount_create(0,
401 &ctx->ea_inode_refs);
402 if (pctx->errcode) {
403 pctx->num = 4;
404 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
405 ctx->flags |= E2F_FLAG_ABORT;
406 return;
407 }
408 }
409 ea_refcount_increment(ctx->ea_inode_refs, entry->e_value_inum,
410 0);
411 next:
412 entry = np;
413 np = EXT2_EXT_ATTR_NEXT(entry);
414 }
415 }
416
417 static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx,
418 struct ea_quota *ea_ibody_quota)
419 {
420 struct ext2_super_block *sb = ctx->fs->super;
421 struct ext2_inode_large *inode;
422 struct ext2_ext_attr_entry *entry;
423 char *start, *header, *end;
424 unsigned int storage_size, remain;
425 problem_t problem = 0;
426 region_t region = 0;
427
428 ea_ibody_quota->blocks = 0;
429 ea_ibody_quota->inodes = 0;
430
431 inode = (struct ext2_inode_large *) pctx->inode;
432 storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE -
433 inode->i_extra_isize;
434 header = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
435 inode->i_extra_isize;
436 end = header + storage_size;
437 start = header + sizeof(__u32);
438 entry = (struct ext2_ext_attr_entry *) start;
439
440 /* scan all entry's headers first */
441
442 /* take finish entry 0UL into account */
443 remain = storage_size - sizeof(__u32);
444
445 region = region_create(0, storage_size);
446 if (!region) {
447 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
448 problem = 0;
449 ctx->flags |= E2F_FLAG_ABORT;
450 return;
451 }
452 if (region_allocate(region, 0, sizeof(__u32))) {
453 problem = PR_1_INODE_EA_ALLOC_COLLISION;
454 goto fix;
455 }
456
457 while (remain >= sizeof(struct ext2_ext_attr_entry) &&
458 !EXT2_EXT_IS_LAST_ENTRY(entry)) {
459 __u32 hash;
460
461 if (region_allocate(region, (char *)entry - (char *)header,
462 EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
463 problem = PR_1_INODE_EA_ALLOC_COLLISION;
464 goto fix;
465 }
466
467 /* header eats this space */
468 remain -= sizeof(struct ext2_ext_attr_entry);
469
470 /* is attribute name valid? */
471 if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) {
472 pctx->num = entry->e_name_len;
473 problem = PR_1_ATTR_NAME_LEN;
474 goto fix;
475 }
476
477 /* attribute len eats this space */
478 remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
479
480 if (entry->e_value_inum == 0) {
481 /* check value size */
482 if (entry->e_value_size > remain) {
483 pctx->num = entry->e_value_size;
484 problem = PR_1_ATTR_VALUE_SIZE;
485 goto fix;
486 }
487
488 if (entry->e_value_size &&
489 region_allocate(region,
490 sizeof(__u32) + entry->e_value_offs,
491 EXT2_EXT_ATTR_SIZE(
492 entry->e_value_size))) {
493 problem = PR_1_INODE_EA_ALLOC_COLLISION;
494 goto fix;
495 }
496
497 hash = ext2fs_ext_attr_hash_entry(entry,
498 start + entry->e_value_offs);
499
500 /* e_hash may be 0 in older inode's ea */
501 if (entry->e_hash != 0 && entry->e_hash != hash) {
502 pctx->num = entry->e_hash;
503 problem = PR_1_ATTR_HASH;
504 goto fix;
505 }
506 } else {
507 blk64_t quota_blocks;
508
509 problem = check_large_ea_inode(ctx, entry, pctx,
510 &quota_blocks);
511 if (problem != 0)
512 goto fix;
513
514 ea_ibody_quota->blocks += quota_blocks;
515 ea_ibody_quota->inodes++;
516 }
517
518 /* If EA value is stored in external inode then it does not
519 * consume space here */
520 if (entry->e_value_inum == 0)
521 remain -= entry->e_value_size;
522
523 entry = EXT2_EXT_ATTR_NEXT(entry);
524 }
525
526 if (region_allocate(region, (char *)entry - (char *)header,
527 sizeof(__u32))) {
528 problem = PR_1_INODE_EA_ALLOC_COLLISION;
529 goto fix;
530 }
531 fix:
532 if (region)
533 region_free(region);
534 /*
535 * it seems like a corruption. it's very unlikely we could repair
536 * EA(s) in automatic fashion -bzzz
537 */
538 if (problem == 0 || !fix_problem(ctx, problem, pctx)) {
539 inc_ea_inode_refs(ctx, pctx,
540 (struct ext2_ext_attr_entry *)start, end);
541 return;
542 }
543
544 /* simply remove all possible EA(s) */
545 *((__u32 *)header) = 0UL;
546 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
547 EXT2_INODE_SIZE(sb), "pass1");
548 ea_ibody_quota->blocks = 0;
549 ea_ibody_quota->inodes = 0;
550 }
551
552 static int check_inode_extra_negative_epoch(__u32 xtime, __u32 extra) {
553 return (xtime & (1U << 31)) != 0 &&
554 (extra & EXT4_EPOCH_MASK) == EXT4_EPOCH_MASK;
555 }
556
557 #define CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, xtime) \
558 check_inode_extra_negative_epoch(inode->i_##xtime, \
559 inode->i_##xtime##_extra)
560
561 /* When today's date is earlier than 2242, we assume that atimes,
562 * ctimes, crtimes, and mtimes with years in the range 2310..2378 are
563 * actually pre-1970 dates mis-encoded.
564 */
565 #define EXT4_EXTRA_NEGATIVE_DATE_CUTOFF 2 * (1LL << 32)
566
567 static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx,
568 struct ea_quota *ea_ibody_quota)
569 {
570 struct ext2_super_block *sb = ctx->fs->super;
571 struct ext2_inode_large *inode;
572 __u32 *eamagic;
573 int min, max;
574
575 ea_ibody_quota->blocks = 0;
576 ea_ibody_quota->inodes = 0;
577
578 inode = (struct ext2_inode_large *) pctx->inode;
579 if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) {
580 /* this isn't large inode. so, nothing to check */
581 return;
582 }
583
584 #if 0
585 printf("inode #%u, i_extra_size %d\n", pctx->ino,
586 inode->i_extra_isize);
587 #endif
588 /* i_extra_isize must cover i_extra_isize + i_checksum_hi at least */
589 min = sizeof(inode->i_extra_isize) + sizeof(inode->i_checksum_hi);
590 max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE;
591 /*
592 * For now we will allow i_extra_isize to be 0, but really
593 * implementations should never allow i_extra_isize to be 0
594 */
595 if (inode->i_extra_isize &&
596 (inode->i_extra_isize < min || inode->i_extra_isize > max ||
597 inode->i_extra_isize & 3)) {
598 if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
599 return;
600 if (inode->i_extra_isize < min || inode->i_extra_isize > max)
601 inode->i_extra_isize = sb->s_want_extra_isize;
602 else
603 inode->i_extra_isize = (inode->i_extra_isize + 3) & ~3;
604 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
605 EXT2_INODE_SIZE(sb), "pass1");
606 }
607
608 /* check if there is no place for an EA header */
609 if (inode->i_extra_isize >= max - sizeof(__u32))
610 return;
611
612 eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
613 inode->i_extra_isize);
614 if (*eamagic == EXT2_EXT_ATTR_MAGIC) {
615 /* it seems inode has an extended attribute(s) in body */
616 check_ea_in_inode(ctx, pctx, ea_ibody_quota);
617 }
618
619 /*
620 * If the inode's extended atime (ctime, crtime, mtime) is stored in
621 * the old, invalid format, repair it.
622 */
623 if (((sizeof(time_t) <= 4) ||
624 (((sizeof(time_t) > 4) &&
625 ctx->now < EXT4_EXTRA_NEGATIVE_DATE_CUTOFF))) &&
626 (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime) ||
627 CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime) ||
628 CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime) ||
629 CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))) {
630
631 if (!fix_problem(ctx, PR_1_EA_TIME_OUT_OF_RANGE, pctx))
632 return;
633
634 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime))
635 inode->i_atime_extra &= ~EXT4_EPOCH_MASK;
636 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime))
637 inode->i_ctime_extra &= ~EXT4_EPOCH_MASK;
638 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime))
639 inode->i_crtime_extra &= ~EXT4_EPOCH_MASK;
640 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))
641 inode->i_mtime_extra &= ~EXT4_EPOCH_MASK;
642 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
643 EXT2_INODE_SIZE(sb), "pass1");
644 }
645
646 }
647
648 /*
649 * Check to see if the inode might really be a directory, despite i_mode
650 *
651 * This is a lot of complexity for something for which I'm not really
652 * convinced happens frequently in the wild. If for any reason this
653 * causes any problems, take this code out.
654 * [tytso:20070331.0827EDT]
655 */
656 static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
657 char *buf)
658 {
659 struct ext2_inode *inode = pctx->inode;
660 struct ext2_dir_entry *dirent;
661 errcode_t retval;
662 blk64_t blk;
663 unsigned int i, rec_len, not_device = 0;
664 int extent_fs;
665 int inlinedata_fs;
666
667 /*
668 * If the mode looks OK, we believe it. If the first block in
669 * the i_block array is 0, this cannot be a directory. If the
670 * inode is extent-mapped, it is still the case that the latter
671 * cannot be 0 - the magic number in the extent header would make
672 * it nonzero.
673 */
674 if (LINUX_S_ISDIR(inode->i_mode) || LINUX_S_ISREG(inode->i_mode) ||
675 LINUX_S_ISLNK(inode->i_mode) || inode->i_block[0] == 0)
676 return;
677
678 /*
679 * Check the block numbers in the i_block array for validity:
680 * zero blocks are skipped (but the first one cannot be zero -
681 * see above), other blocks are checked against the first and
682 * max data blocks (from the the superblock) and against the
683 * block bitmap. Any invalid block found means this cannot be
684 * a directory.
685 *
686 * If there are non-zero blocks past the fourth entry, then
687 * this cannot be a device file: we remember that for the next
688 * check.
689 *
690 * For extent mapped files, we don't do any sanity checking:
691 * just try to get the phys block of logical block 0 and run
692 * with it.
693 *
694 * For inline data files, we just try to get the size of inline
695 * data. If it's true, we will treat it as a directory.
696 */
697
698 extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
699 inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
700 if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL)) {
701 size_t size;
702 __u32 dotdot;
703 unsigned int rec_len2;
704 struct ext2_dir_entry de;
705
706 if (ext2fs_inline_data_size(ctx->fs, pctx->ino, &size))
707 return;
708 /*
709 * If the size isn't a multiple of 4, it's probably not a
710 * directory??
711 */
712 if (size & 3)
713 return;
714 /*
715 * If the first 10 bytes don't look like a directory entry,
716 * it's probably not a directory.
717 */
718 memcpy(&dotdot, inode->i_block, sizeof(dotdot));
719 memcpy(&de, ((char *)inode->i_block) + EXT4_INLINE_DATA_DOTDOT_SIZE,
720 EXT2_DIR_REC_LEN(0));
721 dotdot = ext2fs_le32_to_cpu(dotdot);
722 de.inode = ext2fs_le32_to_cpu(de.inode);
723 de.rec_len = ext2fs_le16_to_cpu(de.rec_len);
724 ext2fs_get_rec_len(ctx->fs, &de, &rec_len2);
725 if (dotdot >= ctx->fs->super->s_inodes_count ||
726 (dotdot < EXT2_FIRST_INO(ctx->fs->super) &&
727 dotdot != EXT2_ROOT_INO) ||
728 de.inode >= ctx->fs->super->s_inodes_count ||
729 (de.inode < EXT2_FIRST_INO(ctx->fs->super) &&
730 de.inode != 0) ||
731 rec_len2 > EXT4_MIN_INLINE_DATA_SIZE -
732 EXT4_INLINE_DATA_DOTDOT_SIZE)
733 return;
734 /* device files never have a "system.data" entry */
735 goto isdir;
736 } else if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) {
737 /* extent mapped */
738 if (ext2fs_bmap2(ctx->fs, pctx->ino, inode, 0, 0, 0, 0,
739 &blk))
740 return;
741 /* device files are never extent mapped */
742 not_device++;
743 } else {
744 for (i=0; i < EXT2_N_BLOCKS; i++) {
745 blk = inode->i_block[i];
746 if (!blk)
747 continue;
748 if (i >= 4)
749 not_device++;
750
751 if (blk < ctx->fs->super->s_first_data_block ||
752 blk >= ext2fs_blocks_count(ctx->fs->super) ||
753 ext2fs_fast_test_block_bitmap2(ctx->block_found_map,
754 blk))
755 return; /* Invalid block, can't be dir */
756 }
757 blk = inode->i_block[0];
758 }
759
760 /*
761 * If the mode says this is a device file and the i_links_count field
762 * is sane and we have not ruled it out as a device file previously,
763 * we declare it a device file, not a directory.
764 */
765 if ((LINUX_S_ISCHR(inode->i_mode) || LINUX_S_ISBLK(inode->i_mode)) &&
766 (inode->i_links_count == 1) && !not_device)
767 return;
768
769 /* read the first block */
770 ehandler_operation(_("reading directory block"));
771 retval = ext2fs_read_dir_block4(ctx->fs, blk, buf, 0, pctx->ino);
772 ehandler_operation(0);
773 if (retval)
774 return;
775
776 dirent = (struct ext2_dir_entry *) buf;
777 retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
778 if (retval)
779 return;
780 if ((ext2fs_dirent_name_len(dirent) != 1) ||
781 (dirent->name[0] != '.') ||
782 (dirent->inode != pctx->ino) ||
783 (rec_len < 12) ||
784 (rec_len % 4) ||
785 (rec_len >= ctx->fs->blocksize - 12))
786 return;
787
788 dirent = (struct ext2_dir_entry *) (buf + rec_len);
789 retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
790 if (retval)
791 return;
792 if ((ext2fs_dirent_name_len(dirent) != 2) ||
793 (dirent->name[0] != '.') ||
794 (dirent->name[1] != '.') ||
795 (rec_len < 12) ||
796 (rec_len % 4))
797 return;
798
799 isdir:
800 if (fix_problem(ctx, PR_1_TREAT_AS_DIRECTORY, pctx)) {
801 inode->i_mode = (inode->i_mode & 07777) | LINUX_S_IFDIR;
802 e2fsck_write_inode_full(ctx, pctx->ino, inode,
803 EXT2_INODE_SIZE(ctx->fs->super),
804 "check_is_really_dir");
805 }
806 }
807
808 extern errcode_t e2fsck_setup_icount(e2fsck_t ctx, const char *icount_name,
809 int flags, ext2_icount_t hint,
810 ext2_icount_t *ret)
811 {
812 unsigned int threshold;
813 unsigned int save_type;
814 ext2_ino_t num_dirs;
815 errcode_t retval;
816 char *tdb_dir;
817 int enable;
818
819 *ret = 0;
820
821 profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
822 &tdb_dir);
823 profile_get_uint(ctx->profile, "scratch_files",
824 "numdirs_threshold", 0, 0, &threshold);
825 profile_get_boolean(ctx->profile, "scratch_files",
826 "icount", 0, 1, &enable);
827
828 retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
829 if (retval)
830 num_dirs = 1024; /* Guess */
831
832 if (enable && tdb_dir && !access(tdb_dir, W_OK) &&
833 (!threshold || num_dirs > threshold)) {
834 retval = ext2fs_create_icount_tdb(ctx->fs, tdb_dir,
835 flags, ret);
836 if (retval == 0)
837 return 0;
838 }
839 e2fsck_set_bitmap_type(ctx->fs, EXT2FS_BMAP64_RBTREE, icount_name,
840 &save_type);
841 if (ctx->options & E2F_OPT_ICOUNT_FULLMAP)
842 flags |= EXT2_ICOUNT_OPT_FULLMAP;
843 retval = ext2fs_create_icount2(ctx->fs, flags, 0, hint, ret);
844 ctx->fs->default_bitmap_type = save_type;
845 return retval;
846 }
847
848 static errcode_t recheck_bad_inode_checksum(ext2_filsys fs, ext2_ino_t ino,
849 e2fsck_t ctx,
850 struct problem_context *pctx)
851 {
852 errcode_t retval;
853 struct ext2_inode_large inode;
854
855 /*
856 * Reread inode. If we don't see checksum error, then this inode
857 * has been fixed elsewhere.
858 */
859 ctx->stashed_ino = 0;
860 retval = ext2fs_read_inode_full(fs, ino, (struct ext2_inode *)&inode,
861 sizeof(inode));
862 if (retval && retval != EXT2_ET_INODE_CSUM_INVALID)
863 return retval;
864 if (!retval)
865 return 0;
866
867 /*
868 * Checksum still doesn't match. That implies that the inode passes
869 * all the sanity checks, so maybe the checksum is simply corrupt.
870 * See if the user will go for fixing that.
871 */
872 if (!fix_problem(ctx, PR_1_INODE_ONLY_CSUM_INVALID, pctx))
873 return 0;
874
875 retval = ext2fs_write_inode_full(fs, ino, (struct ext2_inode *)&inode,
876 sizeof(inode));
877 return retval;
878 }
879
880 static void reserve_block_for_root_repair(e2fsck_t ctx)
881 {
882 blk64_t blk = 0;
883 errcode_t err;
884 ext2_filsys fs = ctx->fs;
885
886 ctx->root_repair_block = 0;
887 if (ext2fs_test_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO))
888 return;
889
890 err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
891 if (err)
892 return;
893 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
894 ctx->root_repair_block = blk;
895 }
896
897 static void reserve_block_for_lnf_repair(e2fsck_t ctx)
898 {
899 blk64_t blk = 0;
900 errcode_t err;
901 ext2_filsys fs = ctx->fs;
902 static const char name[] = "lost+found";
903 ext2_ino_t ino;
904
905 ctx->lnf_repair_block = 0;
906 if (!ext2fs_lookup(fs, EXT2_ROOT_INO, name, sizeof(name)-1, 0, &ino))
907 return;
908
909 err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
910 if (err)
911 return;
912 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
913 ctx->lnf_repair_block = blk;
914 }
915
916 static errcode_t get_inline_data_ea_size(ext2_filsys fs, ext2_ino_t ino,
917 struct ext2_inode *inode,
918 size_t *sz)
919 {
920 void *p;
921 struct ext2_xattr_handle *handle;
922 errcode_t retval;
923
924 retval = ext2fs_xattrs_open(fs, ino, &handle);
925 if (retval)
926 return retval;
927
928 retval = ext2fs_xattrs_read_inode(handle,
929 (struct ext2_inode_large *)inode);
930 if (retval)
931 goto err;
932
933 retval = ext2fs_xattr_get(handle, "system.data", &p, sz);
934 if (retval)
935 goto err;
936 ext2fs_free_mem(&p);
937 err:
938 (void) ext2fs_xattrs_close(&handle);
939 return retval;
940 }
941
942 static void finish_processing_inode(e2fsck_t ctx, ext2_ino_t ino,
943 struct problem_context *pctx,
944 int failed_csum)
945 {
946 if (!failed_csum)
947 return;
948
949 /*
950 * If the inode failed the checksum and the user didn't
951 * clear the inode, test the checksum again -- if it still
952 * fails, ask the user if the checksum should be corrected.
953 */
954 pctx->errcode = recheck_bad_inode_checksum(ctx->fs, ino, ctx, pctx);
955 if (pctx->errcode)
956 ctx->flags |= E2F_FLAG_ABORT;
957 }
958 #define FINISH_INODE_LOOP(ctx, ino, pctx, failed_csum) \
959 do { \
960 finish_processing_inode((ctx), (ino), (pctx), (failed_csum)); \
961 if ((ctx)->flags & E2F_FLAG_ABORT) \
962 return; \
963 } while (0)
964
965 static int could_be_block_map(ext2_filsys fs, struct ext2_inode *inode)
966 {
967 __u32 x;
968 int i;
969
970 for (i = 0; i < EXT2_N_BLOCKS; i++) {
971 x = inode->i_block[i];
972 #ifdef WORDS_BIGENDIAN
973 x = ext2fs_swab32(x);
974 #endif
975 if (x >= ext2fs_blocks_count(fs->super))
976 return 0;
977 }
978
979 return 1;
980 }
981
982 /*
983 * Figure out what to do with an inode that has both extents and inline data
984 * inode flags set. Returns -1 if we decide to erase the inode, 0 otherwise.
985 */
986 static int fix_inline_data_extents_file(e2fsck_t ctx,
987 ext2_ino_t ino,
988 struct ext2_inode *inode,
989 int inode_size,
990 struct problem_context *pctx)
991 {
992 size_t max_inline_ea_size;
993 ext2_filsys fs = ctx->fs;
994 int dirty = 0;
995
996 /* Both feature flags not set? Just run the regular checks */
997 if (!ext2fs_has_feature_extents(fs->super) &&
998 !ext2fs_has_feature_inline_data(fs->super))
999 return 0;
1000
1001 /* Clear both flags if it's a special file */
1002 if (LINUX_S_ISCHR(inode->i_mode) ||
1003 LINUX_S_ISBLK(inode->i_mode) ||
1004 LINUX_S_ISFIFO(inode->i_mode) ||
1005 LINUX_S_ISSOCK(inode->i_mode)) {
1006 check_extents_inlinedata(ctx, pctx);
1007 return 0;
1008 }
1009
1010 /* If it looks like an extent tree, try to clear inlinedata */
1011 if (ext2fs_extent_header_verify(inode->i_block,
1012 sizeof(inode->i_block)) == 0 &&
1013 fix_problem(ctx, PR_1_CLEAR_INLINE_DATA_FOR_EXTENT, pctx)) {
1014 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1015 dirty = 1;
1016 goto out;
1017 }
1018
1019 /* If it looks short enough to be inline data, try to clear extents */
1020 if (inode_size > EXT2_GOOD_OLD_INODE_SIZE)
1021 max_inline_ea_size = inode_size -
1022 (EXT2_GOOD_OLD_INODE_SIZE +
1023 ((struct ext2_inode_large *)inode)->i_extra_isize);
1024 else
1025 max_inline_ea_size = 0;
1026 if (EXT2_I_SIZE(inode) <
1027 EXT4_MIN_INLINE_DATA_SIZE + max_inline_ea_size &&
1028 fix_problem(ctx, PR_1_CLEAR_EXTENT_FOR_INLINE_DATA, pctx)) {
1029 inode->i_flags &= ~EXT4_EXTENTS_FL;
1030 dirty = 1;
1031 goto out;
1032 }
1033
1034 /*
1035 * Too big for inline data, but no evidence of extent tree -
1036 * maybe it's a block map file? If the mappings all look valid?
1037 */
1038 if (could_be_block_map(fs, inode) &&
1039 fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_FLAGS, pctx)) {
1040 #ifdef WORDS_BIGENDIAN
1041 int i;
1042
1043 for (i = 0; i < EXT2_N_BLOCKS; i++)
1044 inode->i_block[i] = ext2fs_swab32(inode->i_block[i]);
1045 #endif
1046
1047 inode->i_flags &= ~(EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL);
1048 dirty = 1;
1049 goto out;
1050 }
1051
1052 /* Oh well, just clear the busted inode. */
1053 if (fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_INODE, pctx)) {
1054 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1055 return -1;
1056 }
1057
1058 out:
1059 if (dirty)
1060 e2fsck_write_inode(ctx, ino, inode, "pass1");
1061
1062 return 0;
1063 }
1064
1065 static void pass1_readahead(e2fsck_t ctx, dgrp_t *group, ext2_ino_t *next_ino)
1066 {
1067 ext2_ino_t inodes_in_group = 0, inodes_per_block, inodes_per_buffer;
1068 dgrp_t start = *group, grp;
1069 blk64_t blocks_to_read = 0;
1070 errcode_t err = EXT2_ET_INVALID_ARGUMENT;
1071
1072 if (ctx->readahead_kb == 0)
1073 goto out;
1074
1075 /* Keep iterating groups until we have enough to readahead */
1076 inodes_per_block = EXT2_INODES_PER_BLOCK(ctx->fs->super);
1077 for (grp = start; grp < ctx->fs->group_desc_count; grp++) {
1078 if (ext2fs_bg_flags_test(ctx->fs, grp, EXT2_BG_INODE_UNINIT))
1079 continue;
1080 inodes_in_group = ctx->fs->super->s_inodes_per_group -
1081 ext2fs_bg_itable_unused(ctx->fs, grp);
1082 blocks_to_read += (inodes_in_group + inodes_per_block - 1) /
1083 inodes_per_block;
1084 if (blocks_to_read * ctx->fs->blocksize >
1085 ctx->readahead_kb * 1024)
1086 break;
1087 }
1088
1089 err = e2fsck_readahead(ctx->fs, E2FSCK_READA_ITABLE, start,
1090 grp - start + 1);
1091 if (err == EAGAIN) {
1092 ctx->readahead_kb /= 2;
1093 err = 0;
1094 }
1095
1096 out:
1097 if (err) {
1098 /* Error; disable itable readahead */
1099 *group = ctx->fs->group_desc_count;
1100 *next_ino = ctx->fs->super->s_inodes_count;
1101 } else {
1102 /*
1103 * Don't do more readahead until we've reached the first inode
1104 * of the last inode scan buffer block for the last group.
1105 */
1106 *group = grp + 1;
1107 inodes_per_buffer = (ctx->inode_buffer_blocks ?
1108 ctx->inode_buffer_blocks :
1109 EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS) *
1110 ctx->fs->blocksize /
1111 EXT2_INODE_SIZE(ctx->fs->super);
1112 inodes_in_group--;
1113 *next_ino = inodes_in_group -
1114 (inodes_in_group % inodes_per_buffer) + 1 +
1115 (grp * ctx->fs->super->s_inodes_per_group);
1116 }
1117 }
1118
1119 /*
1120 * Check if the passed ino is one of the used superblock quota inodes.
1121 *
1122 * Before the quota inodes were journaled, older superblock quota inodes
1123 * were just regular files in the filesystem and not reserved inodes. This
1124 * checks if the passed ino is one of the s_*_quota_inum superblock fields,
1125 * which may not always be the same as the EXT4_*_QUOTA_INO fields.
1126 */
1127 static int quota_inum_is_super(struct ext2_super_block *sb, ext2_ino_t ino)
1128 {
1129 enum quota_type qtype;
1130
1131 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1132 if (*quota_sb_inump(sb, qtype) == ino)
1133 return 1;
1134
1135 return 0;
1136 }
1137
1138 /*
1139 * Check if the passed ino is one of the reserved quota inodes.
1140 * This checks if the inode number is one of the reserved EXT4_*_QUOTA_INO
1141 * inodes. These inodes may or may not be in use by the quota feature.
1142 */
1143 static int quota_inum_is_reserved(ext2_filsys fs, ext2_ino_t ino)
1144 {
1145 enum quota_type qtype;
1146
1147 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1148 if (quota_type2inum(qtype, fs->super) == ino)
1149 return 1;
1150
1151 return 0;
1152 }
1153
1154 void e2fsck_pass1(e2fsck_t ctx)
1155 {
1156 int i;
1157 __u64 max_sizes;
1158 ext2_filsys fs = ctx->fs;
1159 ext2_ino_t ino = 0;
1160 struct ext2_inode *inode = NULL;
1161 ext2_inode_scan scan = NULL;
1162 char *block_buf = NULL;
1163 #ifdef RESOURCE_TRACK
1164 struct resource_track rtrack;
1165 #endif
1166 unsigned char frag, fsize;
1167 struct problem_context pctx;
1168 struct scan_callback_struct scan_struct;
1169 struct ext2_super_block *sb = ctx->fs->super;
1170 const char *old_op;
1171 const char *eop_next_inode = _("getting next inode from scan");
1172 int imagic_fs, extent_fs, inlinedata_fs, casefold_fs;
1173 int low_dtime_check = 1;
1174 unsigned int inode_size = EXT2_INODE_SIZE(fs->super);
1175 unsigned int bufsize;
1176 int failed_csum = 0;
1177 ext2_ino_t ino_threshold = 0;
1178 dgrp_t ra_group = 0;
1179 struct ea_quota ea_ibody_quota;
1180
1181 init_resource_track(&rtrack, ctx->fs->io);
1182 clear_problem_context(&pctx);
1183
1184 /* If we can do readahead, figure out how many groups to pull in. */
1185 if (!e2fsck_can_readahead(ctx->fs))
1186 ctx->readahead_kb = 0;
1187 else if (ctx->readahead_kb == ~0ULL)
1188 ctx->readahead_kb = e2fsck_guess_readahead(ctx->fs);
1189 pass1_readahead(ctx, &ra_group, &ino_threshold);
1190
1191 if (!(ctx->options & E2F_OPT_PREEN))
1192 fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
1193
1194 if (ext2fs_has_feature_dir_index(fs->super) &&
1195 !(ctx->options & E2F_OPT_NO)) {
1196 if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
1197 ctx->dirs_to_hash = 0;
1198 }
1199
1200 #ifdef MTRACE
1201 mtrace_print("Pass 1");
1202 #endif
1203
1204 #define EXT2_BPP(bits) (1ULL << ((bits) - 2))
1205
1206 for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
1207 max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
1208 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
1209 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
1210 max_sizes = (max_sizes * (1UL << i));
1211 ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
1212 }
1213 #undef EXT2_BPP
1214
1215 imagic_fs = ext2fs_has_feature_imagic_inodes(sb);
1216 extent_fs = ext2fs_has_feature_extents(sb);
1217 inlinedata_fs = ext2fs_has_feature_inline_data(sb);
1218 casefold_fs = ext2fs_has_feature_casefold(sb);
1219
1220 /*
1221 * Allocate bitmaps structures
1222 */
1223 pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("in-use inode map"),
1224 EXT2FS_BMAP64_RBTREE,
1225 "inode_used_map",
1226 &ctx->inode_used_map);
1227 if (pctx.errcode) {
1228 pctx.num = 1;
1229 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1230 ctx->flags |= E2F_FLAG_ABORT;
1231 return;
1232 }
1233 pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1234 _("directory inode map"),
1235 EXT2FS_BMAP64_AUTODIR,
1236 "inode_dir_map", &ctx->inode_dir_map);
1237 if (pctx.errcode) {
1238 pctx.num = 2;
1239 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1240 ctx->flags |= E2F_FLAG_ABORT;
1241 return;
1242 }
1243 pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1244 _("regular file inode map"), EXT2FS_BMAP64_RBTREE,
1245 "inode_reg_map", &ctx->inode_reg_map);
1246 if (pctx.errcode) {
1247 pctx.num = 6;
1248 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1249 ctx->flags |= E2F_FLAG_ABORT;
1250 return;
1251 }
1252 pctx.errcode = e2fsck_allocate_subcluster_bitmap(fs,
1253 _("in-use block map"), EXT2FS_BMAP64_RBTREE,
1254 "block_found_map", &ctx->block_found_map);
1255 if (pctx.errcode) {
1256 pctx.num = 1;
1257 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1258 ctx->flags |= E2F_FLAG_ABORT;
1259 return;
1260 }
1261 pctx.errcode = e2fsck_allocate_block_bitmap(fs,
1262 _("metadata block map"), EXT2FS_BMAP64_RBTREE,
1263 "block_metadata_map", &ctx->block_metadata_map);
1264 if (pctx.errcode) {
1265 pctx.num = 1;
1266 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1267 ctx->flags |= E2F_FLAG_ABORT;
1268 return;
1269 }
1270 if (casefold_fs) {
1271 pctx.errcode =
1272 e2fsck_allocate_inode_bitmap(fs,
1273 _("inode casefold map"),
1274 EXT2FS_BMAP64_RBTREE,
1275 "inode_casefold_map",
1276 &ctx->inode_casefold_map);
1277 if (pctx.errcode) {
1278 pctx.num = 1;
1279 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1280 ctx->flags |= E2F_FLAG_ABORT;
1281 return;
1282 }
1283 }
1284 pctx.errcode = e2fsck_setup_icount(ctx, "inode_link_info", 0, NULL,
1285 &ctx->inode_link_info);
1286 if (pctx.errcode) {
1287 fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
1288 ctx->flags |= E2F_FLAG_ABORT;
1289 return;
1290 }
1291 bufsize = inode_size;
1292 if (bufsize < sizeof(struct ext2_inode_large))
1293 bufsize = sizeof(struct ext2_inode_large);
1294 inode = (struct ext2_inode *)
1295 e2fsck_allocate_memory(ctx, bufsize, "scratch inode");
1296
1297 inodes_to_process = (struct process_inode_block *)
1298 e2fsck_allocate_memory(ctx,
1299 (ctx->process_inode_size *
1300 sizeof(struct process_inode_block)),
1301 "array of inodes to process");
1302 process_inode_count = 0;
1303
1304 pctx.errcode = ext2fs_init_dblist(fs, 0);
1305 if (pctx.errcode) {
1306 fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
1307 ctx->flags |= E2F_FLAG_ABORT;
1308 goto endit;
1309 }
1310
1311 /*
1312 * If the last orphan field is set, clear it, since the pass1
1313 * processing will automatically find and clear the orphans.
1314 * In the future, we may want to try using the last_orphan
1315 * linked list ourselves, but for now, we clear it so that the
1316 * ext3 mount code won't get confused.
1317 */
1318 if (!(ctx->options & E2F_OPT_READONLY)) {
1319 if (fs->super->s_last_orphan) {
1320 fs->super->s_last_orphan = 0;
1321 ext2fs_mark_super_dirty(fs);
1322 }
1323 }
1324
1325 mark_table_blocks(ctx);
1326 pctx.errcode = ext2fs_convert_subcluster_bitmap(fs,
1327 &ctx->block_found_map);
1328 if (pctx.errcode) {
1329 fix_problem(ctx, PR_1_CONVERT_SUBCLUSTER, &pctx);
1330 ctx->flags |= E2F_FLAG_ABORT;
1331 goto endit;
1332 }
1333 block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
1334 "block interate buffer");
1335 if (EXT2_INODE_SIZE(fs->super) == EXT2_GOOD_OLD_INODE_SIZE)
1336 e2fsck_use_inode_shortcuts(ctx, 1);
1337 e2fsck_intercept_block_allocations(ctx);
1338 old_op = ehandler_operation(_("opening inode scan"));
1339 pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
1340 &scan);
1341 ehandler_operation(old_op);
1342 if (pctx.errcode) {
1343 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1344 ctx->flags |= E2F_FLAG_ABORT;
1345 goto endit;
1346 }
1347 ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE |
1348 EXT2_SF_WARN_GARBAGE_INODES, 0);
1349 ctx->stashed_inode = inode;
1350 scan_struct.ctx = ctx;
1351 scan_struct.block_buf = block_buf;
1352 ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
1353 if (ctx->progress && ((ctx->progress)(ctx, 1, 0,
1354 ctx->fs->group_desc_count)))
1355 goto endit;
1356 if ((fs->super->s_wtime &&
1357 fs->super->s_wtime < fs->super->s_inodes_count) ||
1358 (fs->super->s_mtime &&
1359 fs->super->s_mtime < fs->super->s_inodes_count) ||
1360 (fs->super->s_mkfs_time &&
1361 fs->super->s_mkfs_time < fs->super->s_inodes_count))
1362 low_dtime_check = 0;
1363
1364 if (ext2fs_has_feature_mmp(fs->super) &&
1365 fs->super->s_mmp_block > fs->super->s_first_data_block &&
1366 fs->super->s_mmp_block < ext2fs_blocks_count(fs->super))
1367 ext2fs_mark_block_bitmap2(ctx->block_found_map,
1368 fs->super->s_mmp_block);
1369
1370 /* Set up ctx->lost_and_found if possible */
1371 (void) e2fsck_get_lost_and_found(ctx, 0);
1372
1373 while (1) {
1374 if (ino % (fs->super->s_inodes_per_group * 4) == 1) {
1375 if (e2fsck_mmp_update(fs))
1376 fatal_error(ctx, 0);
1377 }
1378 old_op = ehandler_operation(eop_next_inode);
1379 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
1380 inode, inode_size);
1381 if (ino > ino_threshold)
1382 pass1_readahead(ctx, &ra_group, &ino_threshold);
1383 ehandler_operation(old_op);
1384 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1385 goto endit;
1386 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
1387 /*
1388 * If badblocks says badblocks is bad, offer to clear
1389 * the list, update the in-core bb list, and restart
1390 * the inode scan.
1391 */
1392 if (ino == EXT2_BAD_INO &&
1393 fix_problem(ctx, PR_1_BADBLOCKS_IN_BADBLOCKS,
1394 &pctx)) {
1395 errcode_t err;
1396
1397 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1398 ext2fs_badblocks_list_free(ctx->fs->badblocks);
1399 ctx->fs->badblocks = NULL;
1400 err = ext2fs_read_bb_inode(ctx->fs,
1401 &ctx->fs->badblocks);
1402 if (err) {
1403 fix_problem(ctx, PR_1_ISCAN_ERROR,
1404 &pctx);
1405 ctx->flags |= E2F_FLAG_ABORT;
1406 } else
1407 ctx->flags |= E2F_FLAG_RESTART;
1408 goto endit;
1409 }
1410 if (!ctx->inode_bb_map)
1411 alloc_bb_map(ctx);
1412 ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino);
1413 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1414 continue;
1415 }
1416 if (pctx.errcode &&
1417 pctx.errcode != EXT2_ET_INODE_CSUM_INVALID &&
1418 pctx.errcode != EXT2_ET_INODE_IS_GARBAGE) {
1419 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1420 ctx->flags |= E2F_FLAG_ABORT;
1421 goto endit;
1422 }
1423 if (!ino)
1424 break;
1425 pctx.ino = ino;
1426 pctx.inode = inode;
1427 ctx->stashed_ino = ino;
1428
1429 /* Clear trashed inode? */
1430 if (pctx.errcode == EXT2_ET_INODE_IS_GARBAGE &&
1431 inode->i_links_count > 0 &&
1432 fix_problem(ctx, PR_1_INODE_IS_GARBAGE, &pctx)) {
1433 pctx.errcode = 0;
1434 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1435 }
1436 failed_csum = pctx.errcode != 0;
1437
1438 /*
1439 * Check for inodes who might have been part of the
1440 * orphaned list linked list. They should have gotten
1441 * dealt with by now, unless the list had somehow been
1442 * corrupted.
1443 *
1444 * FIXME: In the future, inodes which are still in use
1445 * (and which are therefore) pending truncation should
1446 * be handled specially. Right now we just clear the
1447 * dtime field, and the normal e2fsck handling of
1448 * inodes where i_size and the inode blocks are
1449 * inconsistent is to fix i_size, instead of releasing
1450 * the extra blocks. This won't catch the inodes that
1451 * was at the end of the orphan list, but it's better
1452 * than nothing. The right answer is that there
1453 * shouldn't be any bugs in the orphan list handling. :-)
1454 */
1455 if (inode->i_dtime && low_dtime_check &&
1456 inode->i_dtime < ctx->fs->super->s_inodes_count) {
1457 if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
1458 inode->i_dtime = inode->i_links_count ?
1459 0 : ctx->now;
1460 e2fsck_write_inode(ctx, ino, inode,
1461 "pass1");
1462 failed_csum = 0;
1463 }
1464 }
1465
1466 if (inode->i_links_count) {
1467 pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
1468 ino, inode->i_links_count);
1469 if (pctx.errcode) {
1470 pctx.num = inode->i_links_count;
1471 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
1472 ctx->flags |= E2F_FLAG_ABORT;
1473 goto endit;
1474 }
1475 } else if ((ino >= EXT2_FIRST_INODE(fs->super)) &&
1476 !quota_inum_is_reserved(fs, ino)) {
1477 if (!inode->i_dtime && inode->i_mode) {
1478 if (fix_problem(ctx,
1479 PR_1_ZERO_DTIME, &pctx)) {
1480 inode->i_dtime = ctx->now;
1481 e2fsck_write_inode(ctx, ino, inode,
1482 "pass1");
1483 failed_csum = 0;
1484 }
1485 }
1486 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1487 continue;
1488 }
1489
1490 if ((inode->i_flags & EXT4_CASEFOLD_FL) &&
1491 ((!LINUX_S_ISDIR(inode->i_mode) &&
1492 fix_problem(ctx, PR_1_CASEFOLD_NONDIR, &pctx)) ||
1493 (!casefold_fs &&
1494 fix_problem(ctx, PR_1_CASEFOLD_FEATURE, &pctx)))) {
1495 inode->i_flags &= ~EXT4_CASEFOLD_FL;
1496 e2fsck_write_inode(ctx, ino, inode, "pass1");
1497 }
1498
1499 /* Conflicting inlinedata/extents inode flags? */
1500 if ((inode->i_flags & EXT4_INLINE_DATA_FL) &&
1501 (inode->i_flags & EXT4_EXTENTS_FL)) {
1502 int res = fix_inline_data_extents_file(ctx, ino, inode,
1503 inode_size,
1504 &pctx);
1505 if (res < 0) {
1506 /* skip FINISH_INODE_LOOP */
1507 continue;
1508 }
1509 }
1510
1511 /* Test for incorrect inline_data flags settings. */
1512 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && !inlinedata_fs &&
1513 (ino >= EXT2_FIRST_INODE(fs->super))) {
1514 size_t size = 0;
1515
1516 pctx.errcode = get_inline_data_ea_size(fs, ino, inode,
1517 &size);
1518 if (!pctx.errcode &&
1519 fix_problem(ctx, PR_1_INLINE_DATA_FEATURE, &pctx)) {
1520 ext2fs_set_feature_inline_data(sb);
1521 ext2fs_mark_super_dirty(fs);
1522 inlinedata_fs = 1;
1523 } else if (fix_problem(ctx, PR_1_INLINE_DATA_SET, &pctx)) {
1524 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1525 /* skip FINISH_INODE_LOOP */
1526 continue;
1527 }
1528 }
1529
1530 /* Test for inline data flag but no attr */
1531 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && inlinedata_fs &&
1532 (ino >= EXT2_FIRST_INODE(fs->super))) {
1533 size_t size = 0;
1534 errcode_t err;
1535 int flags;
1536
1537 flags = fs->flags;
1538 if (failed_csum)
1539 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
1540 err = get_inline_data_ea_size(fs, ino, inode, &size);
1541 fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
1542 (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
1543
1544 switch (err) {
1545 case 0:
1546 /* Everything is awesome... */
1547 break;
1548 case EXT2_ET_BAD_EA_BLOCK_NUM:
1549 case EXT2_ET_BAD_EA_HASH:
1550 case EXT2_ET_BAD_EA_HEADER:
1551 case EXT2_ET_EA_BAD_NAME_LEN:
1552 case EXT2_ET_EA_BAD_VALUE_SIZE:
1553 case EXT2_ET_EA_KEY_NOT_FOUND:
1554 case EXT2_ET_EA_NO_SPACE:
1555 case EXT2_ET_MISSING_EA_FEATURE:
1556 case EXT2_ET_INLINE_DATA_CANT_ITERATE:
1557 case EXT2_ET_INLINE_DATA_NO_BLOCK:
1558 case EXT2_ET_INLINE_DATA_NO_SPACE:
1559 case EXT2_ET_NO_INLINE_DATA:
1560 case EXT2_ET_EXT_ATTR_CSUM_INVALID:
1561 case EXT2_ET_EA_BAD_VALUE_OFFSET:
1562 case EXT2_ET_EA_INODE_CORRUPTED:
1563 /* broken EA or no system.data EA; truncate */
1564 if (fix_problem(ctx, PR_1_INLINE_DATA_NO_ATTR,
1565 &pctx)) {
1566 err = ext2fs_inode_size_set(fs, inode, 0);
1567 if (err) {
1568 pctx.errcode = err;
1569 ctx->flags |= E2F_FLAG_ABORT;
1570 goto endit;
1571 }
1572 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1573 memset(&inode->i_block, 0,
1574 sizeof(inode->i_block));
1575 e2fsck_write_inode(ctx, ino, inode,
1576 "pass1");
1577 failed_csum = 0;
1578 }
1579 break;
1580 default:
1581 /* Some other kind of non-xattr error? */
1582 pctx.errcode = err;
1583 ctx->flags |= E2F_FLAG_ABORT;
1584 goto endit;
1585 }
1586 }
1587
1588 /*
1589 * Test for incorrect extent flag settings.
1590 *
1591 * On big-endian machines we must be careful:
1592 * When the inode is read, the i_block array is not swapped
1593 * if the extent flag is set. Therefore if we are testing
1594 * for or fixing a wrongly-set flag, we must potentially
1595 * (un)swap before testing, or after fixing.
1596 */
1597
1598 /*
1599 * In this case the extents flag was set when read, so
1600 * extent_header_verify is ok. If the inode is cleared,
1601 * no need to swap... so no extra swapping here.
1602 */
1603 if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs &&
1604 (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1605 (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) {
1606 if ((ext2fs_extent_header_verify(inode->i_block,
1607 sizeof(inode->i_block)) == 0) &&
1608 fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) {
1609 ext2fs_set_feature_extents(sb);
1610 ext2fs_mark_super_dirty(fs);
1611 extent_fs = 1;
1612 } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) {
1613 clear_inode:
1614 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1615 if (ino == EXT2_BAD_INO)
1616 ext2fs_mark_inode_bitmap2(ctx->inode_used_map,
1617 ino);
1618 /* skip FINISH_INODE_LOOP */
1619 continue;
1620 }
1621 }
1622
1623 /*
1624 * For big-endian machines:
1625 * If the inode didn't have the extents flag set when it
1626 * was read, then the i_blocks array was swapped. To test
1627 * as an extents header, we must swap it back first.
1628 * IF we then set the extents flag, the entire i_block
1629 * array must be un/re-swapped to make it proper extents data.
1630 */
1631 if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) &&
1632 (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1633 (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) &&
1634 (LINUX_S_ISREG(inode->i_mode) ||
1635 LINUX_S_ISDIR(inode->i_mode))) {
1636 void *ehp;
1637 #ifdef WORDS_BIGENDIAN
1638 __u32 tmp_block[EXT2_N_BLOCKS];
1639
1640 for (i = 0; i < EXT2_N_BLOCKS; i++)
1641 tmp_block[i] = ext2fs_swab32(inode->i_block[i]);
1642 ehp = tmp_block;
1643 #else
1644 ehp = inode->i_block;
1645 #endif
1646 if ((ext2fs_extent_header_verify(ehp,
1647 sizeof(inode->i_block)) == 0) &&
1648 (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) {
1649 inode->i_flags |= EXT4_EXTENTS_FL;
1650 #ifdef WORDS_BIGENDIAN
1651 memcpy(inode->i_block, tmp_block,
1652 sizeof(inode->i_block));
1653 #endif
1654 e2fsck_write_inode(ctx, ino, inode, "pass1");
1655 failed_csum = 0;
1656 }
1657 }
1658
1659 if (ino == EXT2_BAD_INO) {
1660 struct process_block_struct pb;
1661
1662 if ((failed_csum || inode->i_mode || inode->i_uid ||
1663 inode->i_gid || inode->i_links_count ||
1664 (inode->i_flags & EXT4_INLINE_DATA_FL) ||
1665 inode->i_file_acl) &&
1666 fix_problem(ctx, PR_1_INVALID_BAD_INODE, &pctx)) {
1667 memset(inode, 0, sizeof(struct ext2_inode));
1668 e2fsck_write_inode(ctx, ino, inode,
1669 "clear bad inode");
1670 failed_csum = 0;
1671 }
1672
1673 pctx.errcode = ext2fs_copy_bitmap(ctx->block_found_map,
1674 &pb.fs_meta_blocks);
1675 if (pctx.errcode) {
1676 pctx.num = 4;
1677 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1678 ctx->flags |= E2F_FLAG_ABORT;
1679 goto endit;
1680 }
1681 pb.ino = EXT2_BAD_INO;
1682 pb.num_blocks = pb.last_block = 0;
1683 pb.last_db_block = -1;
1684 pb.num_illegal_blocks = 0;
1685 pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
1686 pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
1687 pb.inode = inode;
1688 pb.pctx = &pctx;
1689 pb.ctx = ctx;
1690 pctx.errcode = ext2fs_block_iterate3(fs, ino, 0,
1691 block_buf, process_bad_block, &pb);
1692 ext2fs_free_block_bitmap(pb.fs_meta_blocks);
1693 if (pctx.errcode) {
1694 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
1695 ctx->flags |= E2F_FLAG_ABORT;
1696 goto endit;
1697 }
1698 if (pb.bbcheck)
1699 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
1700 ctx->flags |= E2F_FLAG_ABORT;
1701 goto endit;
1702 }
1703 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1704 clear_problem_context(&pctx);
1705 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1706 continue;
1707 } else if (ino == EXT2_ROOT_INO) {
1708 /*
1709 * Make sure the root inode is a directory; if
1710 * not, offer to clear it. It will be
1711 * regenerated in pass #3.
1712 */
1713 if (!LINUX_S_ISDIR(inode->i_mode)) {
1714 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx))
1715 goto clear_inode;
1716 }
1717 /*
1718 * If dtime is set, offer to clear it. mke2fs
1719 * version 0.2b created filesystems with the
1720 * dtime field set for the root and lost+found
1721 * directories. We won't worry about
1722 * /lost+found, since that can be regenerated
1723 * easily. But we will fix the root directory
1724 * as a special case.
1725 */
1726 if (inode->i_dtime && inode->i_links_count) {
1727 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
1728 inode->i_dtime = 0;
1729 e2fsck_write_inode(ctx, ino, inode,
1730 "pass1");
1731 failed_csum = 0;
1732 }
1733 }
1734 } else if (ino == EXT2_JOURNAL_INO) {
1735 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1736 if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
1737 if (!LINUX_S_ISREG(inode->i_mode) &&
1738 fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
1739 &pctx)) {
1740 inode->i_mode = LINUX_S_IFREG;
1741 e2fsck_write_inode(ctx, ino, inode,
1742 "pass1");
1743 failed_csum = 0;
1744 }
1745 check_blocks(ctx, &pctx, block_buf, NULL);
1746 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1747 continue;
1748 }
1749 if ((inode->i_links_count ||
1750 inode->i_blocks || inode->i_block[0]) &&
1751 fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
1752 &pctx)) {
1753 memset(inode, 0, inode_size);
1754 ext2fs_icount_store(ctx->inode_link_info,
1755 ino, 0);
1756 e2fsck_write_inode_full(ctx, ino, inode,
1757 inode_size, "pass1");
1758 failed_csum = 0;
1759 }
1760 } else if (quota_inum_is_reserved(fs, ino)) {
1761 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1762 if (ext2fs_has_feature_quota(fs->super) &&
1763 quota_inum_is_super(fs->super, ino)) {
1764 if (!LINUX_S_ISREG(inode->i_mode) &&
1765 fix_problem(ctx, PR_1_QUOTA_BAD_MODE,
1766 &pctx)) {
1767 inode->i_mode = LINUX_S_IFREG;
1768 e2fsck_write_inode(ctx, ino, inode,
1769 "pass1");
1770 failed_csum = 0;
1771 }
1772 check_blocks(ctx, &pctx, block_buf, NULL);
1773 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1774 continue;
1775 }
1776 if ((inode->i_links_count ||
1777 inode->i_blocks || inode->i_block[0]) &&
1778 fix_problem(ctx, PR_1_QUOTA_INODE_NOT_CLEAR,
1779 &pctx)) {
1780 memset(inode, 0, inode_size);
1781 ext2fs_icount_store(ctx->inode_link_info,
1782 ino, 0);
1783 e2fsck_write_inode_full(ctx, ino, inode,
1784 inode_size, "pass1");
1785 failed_csum = 0;
1786 }
1787 } else if (ino == fs->super->s_orphan_file_inum) {
1788 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1789 if (ext2fs_has_feature_orphan_file(fs->super)) {
1790 if (!LINUX_S_ISREG(inode->i_mode) &&
1791 fix_problem(ctx, PR_1_ORPHAN_FILE_BAD_MODE,
1792 &pctx)) {
1793 inode->i_mode = LINUX_S_IFREG;
1794 e2fsck_write_inode(ctx, ino, inode,
1795 "pass1");
1796 failed_csum = 0;
1797 }
1798 check_blocks(ctx, &pctx, block_buf, NULL);
1799 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1800 continue;
1801 }
1802 if ((inode->i_links_count ||
1803 inode->i_blocks || inode->i_block[0]) &&
1804 fix_problem(ctx, PR_1_ORPHAN_FILE_NOT_CLEAR,
1805 &pctx)) {
1806 memset(inode, 0, inode_size);
1807 ext2fs_icount_store(ctx->inode_link_info, ino,
1808 0);
1809 e2fsck_write_inode_full(ctx, ino, inode,
1810 inode_size, "pass1");
1811 failed_csum = 0;
1812 }
1813 } else if (ino < EXT2_FIRST_INODE(fs->super)) {
1814 problem_t problem = 0;
1815
1816 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1817 if (ino == EXT2_BOOT_LOADER_INO) {
1818 if (LINUX_S_ISDIR(inode->i_mode))
1819 problem = PR_1_RESERVED_BAD_MODE;
1820 } else if (ino == EXT2_RESIZE_INO) {
1821 if (inode->i_mode &&
1822 !LINUX_S_ISREG(inode->i_mode))
1823 problem = PR_1_RESERVED_BAD_MODE;
1824 } else {
1825 if (inode->i_mode != 0)
1826 problem = PR_1_RESERVED_BAD_MODE;
1827 }
1828 if (problem) {
1829 if (fix_problem(ctx, problem, &pctx)) {
1830 inode->i_mode = 0;
1831 e2fsck_write_inode(ctx, ino, inode,
1832 "pass1");
1833 failed_csum = 0;
1834 }
1835 }
1836 check_blocks(ctx, &pctx, block_buf, NULL);
1837 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1838 continue;
1839 }
1840
1841 if (!inode->i_links_count) {
1842 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1843 continue;
1844 }
1845 /*
1846 * n.b. 0.3c ext2fs code didn't clear i_links_count for
1847 * deleted files. Oops.
1848 *
1849 * Since all new ext2 implementations get this right,
1850 * we now assume that the case of non-zero
1851 * i_links_count and non-zero dtime means that we
1852 * should keep the file, not delete it.
1853 *
1854 */
1855 if (inode->i_dtime) {
1856 if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
1857 inode->i_dtime = 0;
1858 e2fsck_write_inode(ctx, ino, inode, "pass1");
1859 failed_csum = 0;
1860 }
1861 }
1862
1863 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1864 switch (fs->super->s_creator_os) {
1865 case EXT2_OS_HURD:
1866 frag = inode->osd2.hurd2.h_i_frag;
1867 fsize = inode->osd2.hurd2.h_i_fsize;
1868 break;
1869 default:
1870 frag = fsize = 0;
1871 }
1872
1873 if (inode->i_faddr || frag || fsize ||
1874 (!ext2fs_has_feature_largedir(fs->super) &&
1875 (LINUX_S_ISDIR(inode->i_mode) && inode->i_size_high)))
1876 mark_inode_bad(ctx, ino);
1877 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
1878 !ext2fs_has_feature_64bit(fs->super) &&
1879 inode->osd2.linux2.l_i_file_acl_high != 0)
1880 mark_inode_bad(ctx, ino);
1881 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
1882 !ext2fs_has_feature_huge_file(fs->super) &&
1883 (inode->osd2.linux2.l_i_blocks_hi != 0))
1884 mark_inode_bad(ctx, ino);
1885 if (inode->i_flags & EXT2_IMAGIC_FL) {
1886 if (imagic_fs) {
1887 if (!ctx->inode_imagic_map)
1888 alloc_imagic_map(ctx);
1889 ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map,
1890 ino);
1891 } else {
1892 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
1893 inode->i_flags &= ~EXT2_IMAGIC_FL;
1894 e2fsck_write_inode(ctx, ino,
1895 inode, "pass1");
1896 failed_csum = 0;
1897 }
1898 }
1899 }
1900
1901 check_inode_extra_space(ctx, &pctx, &ea_ibody_quota);
1902 check_is_really_dir(ctx, &pctx, block_buf);
1903
1904 /*
1905 * ext2fs_inode_has_valid_blocks2 does not actually look
1906 * at i_block[] values, so not endian-sensitive here.
1907 */
1908 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) &&
1909 LINUX_S_ISLNK(inode->i_mode) &&
1910 !ext2fs_inode_has_valid_blocks2(fs, inode) &&
1911 fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) {
1912 inode->i_flags &= ~EXT4_EXTENTS_FL;
1913 e2fsck_write_inode(ctx, ino, inode, "pass1");
1914 failed_csum = 0;
1915 }
1916
1917 if ((inode->i_flags & EXT4_ENCRYPT_FL) &&
1918 add_encrypted_file(ctx, &pctx) < 0)
1919 goto clear_inode;
1920
1921 if (casefold_fs && inode->i_flags & EXT4_CASEFOLD_FL)
1922 ext2fs_mark_inode_bitmap2(ctx->inode_casefold_map, ino);
1923
1924 if (LINUX_S_ISDIR(inode->i_mode)) {
1925 ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
1926 e2fsck_add_dir_info(ctx, ino, 0);
1927 ctx->fs_directory_count++;
1928 if (inode->i_flags & EXT4_CASEFOLD_FL)
1929 add_casefolded_dir(ctx, ino);
1930 } else if (LINUX_S_ISREG (inode->i_mode)) {
1931 ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino);
1932 ctx->fs_regular_count++;
1933 } else if (LINUX_S_ISCHR (inode->i_mode) &&
1934 e2fsck_pass1_check_device_inode(fs, inode)) {
1935 check_extents_inlinedata(ctx, &pctx);
1936 check_immutable(ctx, &pctx);
1937 check_size(ctx, &pctx);
1938 ctx->fs_chardev_count++;
1939 } else if (LINUX_S_ISBLK (inode->i_mode) &&
1940 e2fsck_pass1_check_device_inode(fs, inode)) {
1941 check_extents_inlinedata(ctx, &pctx);
1942 check_immutable(ctx, &pctx);
1943 check_size(ctx, &pctx);
1944 ctx->fs_blockdev_count++;
1945 } else if (LINUX_S_ISLNK (inode->i_mode) &&
1946 e2fsck_pass1_check_symlink(fs, ino, inode,
1947 block_buf)) {
1948 check_immutable(ctx, &pctx);
1949 ctx->fs_symlinks_count++;
1950 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
1951 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1952 continue;
1953 } else if (ext2fs_is_fast_symlink(inode)) {
1954 ctx->fs_fast_symlinks_count++;
1955 check_blocks(ctx, &pctx, block_buf,
1956 &ea_ibody_quota);
1957 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1958 continue;
1959 }
1960 }
1961 else if (LINUX_S_ISFIFO (inode->i_mode) &&
1962 e2fsck_pass1_check_device_inode(fs, inode)) {
1963 check_extents_inlinedata(ctx, &pctx);
1964 check_immutable(ctx, &pctx);
1965 check_size(ctx, &pctx);
1966 ctx->fs_fifo_count++;
1967 } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
1968 e2fsck_pass1_check_device_inode(fs, inode)) {
1969 check_extents_inlinedata(ctx, &pctx);
1970 check_immutable(ctx, &pctx);
1971 check_size(ctx, &pctx);
1972 ctx->fs_sockets_count++;
1973 } else
1974 mark_inode_bad(ctx, ino);
1975 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1976 !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
1977 if (inode->i_block[EXT2_IND_BLOCK])
1978 ctx->fs_ind_count++;
1979 if (inode->i_block[EXT2_DIND_BLOCK])
1980 ctx->fs_dind_count++;
1981 if (inode->i_block[EXT2_TIND_BLOCK])
1982 ctx->fs_tind_count++;
1983 }
1984 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1985 !(inode->i_flags & EXT4_INLINE_DATA_FL) &&
1986 (inode->i_block[EXT2_IND_BLOCK] ||
1987 inode->i_block[EXT2_DIND_BLOCK] ||
1988 inode->i_block[EXT2_TIND_BLOCK] ||
1989 ext2fs_file_acl_block(fs, inode))) {
1990 struct process_inode_block *itp;
1991
1992 itp = &inodes_to_process[process_inode_count];
1993 itp->ino = ino;
1994 itp->ea_ibody_quota = ea_ibody_quota;
1995 if (inode_size < sizeof(struct ext2_inode_large))
1996 memcpy(&itp->inode, inode, inode_size);
1997 else
1998 memcpy(&itp->inode, inode, sizeof(itp->inode));
1999 process_inode_count++;
2000 } else
2001 check_blocks(ctx, &pctx, block_buf, &ea_ibody_quota);
2002
2003 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2004
2005 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2006 goto endit;
2007
2008 if (process_inode_count >= ctx->process_inode_size) {
2009 process_inodes(ctx, block_buf);
2010
2011 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2012 goto endit;
2013 }
2014 }
2015 process_inodes(ctx, block_buf);
2016 ext2fs_close_inode_scan(scan);
2017 scan = NULL;
2018
2019 reserve_block_for_root_repair(ctx);
2020 reserve_block_for_lnf_repair(ctx);
2021
2022 /*
2023 * If any extended attribute blocks' reference counts need to
2024 * be adjusted, either up (ctx->refcount_extra), or down
2025 * (ctx->refcount), then fix them.
2026 */
2027 if (ctx->refcount) {
2028 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
2029 ea_refcount_free(ctx->refcount);
2030 ctx->refcount = 0;
2031 }
2032 if (ctx->refcount_extra) {
2033 adjust_extattr_refcount(ctx, ctx->refcount_extra,
2034 block_buf, +1);
2035 ea_refcount_free(ctx->refcount_extra);
2036 ctx->refcount_extra = 0;
2037 }
2038
2039 if (ctx->ea_block_quota_blocks) {
2040 ea_refcount_free(ctx->ea_block_quota_blocks);
2041 ctx->ea_block_quota_blocks = 0;
2042 }
2043
2044 if (ctx->ea_block_quota_inodes) {
2045 ea_refcount_free(ctx->ea_block_quota_inodes);
2046 ctx->ea_block_quota_inodes = 0;
2047 }
2048
2049 if (ctx->invalid_bitmaps)
2050 handle_fs_bad_blocks(ctx);
2051
2052 /* We don't need the block_ea_map any more */
2053 if (ctx->block_ea_map) {
2054 ext2fs_free_block_bitmap(ctx->block_ea_map);
2055 ctx->block_ea_map = 0;
2056 }
2057
2058 /* We don't need the encryption policy => ID map any more */
2059 destroy_encryption_policy_map(ctx);
2060
2061 if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
2062 clear_problem_context(&pctx);
2063 pctx.errcode = ext2fs_create_resize_inode(fs);
2064 if (pctx.errcode) {
2065 if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE,
2066 &pctx)) {
2067 ctx->flags |= E2F_FLAG_ABORT;
2068 goto endit;
2069 }
2070 pctx.errcode = 0;
2071 }
2072 if (!pctx.errcode) {
2073 e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
2074 "recreate inode");
2075 inode->i_mtime = ctx->now;
2076 e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
2077 "recreate inode");
2078 }
2079 ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
2080 }
2081
2082 if (ctx->flags & E2F_FLAG_RESTART) {
2083 /*
2084 * Only the master copy of the superblock and block
2085 * group descriptors are going to be written during a
2086 * restart, so set the superblock to be used to be the
2087 * master superblock.
2088 */
2089 ctx->use_superblock = 0;
2090 goto endit;
2091 }
2092
2093 if (ctx->large_dirs && !ext2fs_has_feature_largedir(fs->super)) {
2094 if (fix_problem(ctx, PR_2_FEATURE_LARGE_DIRS, &pctx)) {
2095 ext2fs_set_feature_largedir(fs->super);
2096 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2097 ext2fs_mark_super_dirty(fs);
2098 }
2099 if (fs->super->s_rev_level == EXT2_GOOD_OLD_REV &&
2100 fix_problem(ctx, PR_1_FS_REV_LEVEL, &pctx)) {
2101 ext2fs_update_dynamic_rev(fs);
2102 ext2fs_mark_super_dirty(fs);
2103 }
2104 }
2105
2106 if (ctx->block_dup_map) {
2107 if (ctx->options & E2F_OPT_PREEN) {
2108 clear_problem_context(&pctx);
2109 fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
2110 }
2111 e2fsck_pass1_dupblocks(ctx, block_buf);
2112 }
2113 ctx->flags |= E2F_FLAG_ALLOC_OK;
2114 endit:
2115 e2fsck_use_inode_shortcuts(ctx, 0);
2116 ext2fs_free_mem(&inodes_to_process);
2117 inodes_to_process = 0;
2118
2119 if (scan)
2120 ext2fs_close_inode_scan(scan);
2121 if (block_buf)
2122 ext2fs_free_mem(&block_buf);
2123 if (inode)
2124 ext2fs_free_mem(&inode);
2125
2126 /*
2127 * The l+f inode may have been cleared, so zap it now and
2128 * later passes will recalculate it if necessary
2129 */
2130 ctx->lost_and_found = 0;
2131
2132 if ((ctx->flags & E2F_FLAG_SIGNAL_MASK) == 0)
2133 print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io);
2134 else
2135 ctx->invalid_bitmaps++;
2136 }
2137 #undef FINISH_INODE_LOOP
2138
2139 /*
2140 * When the inode_scan routines call this callback at the end of the
2141 * glock group, call process_inodes.
2142 */
2143 static errcode_t scan_callback(ext2_filsys fs,
2144 ext2_inode_scan scan EXT2FS_ATTR((unused)),
2145 dgrp_t group, void * priv_data)
2146 {
2147 struct scan_callback_struct *scan_struct;
2148 e2fsck_t ctx;
2149
2150 scan_struct = (struct scan_callback_struct *) priv_data;
2151 ctx = scan_struct->ctx;
2152
2153 process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf);
2154
2155 if (ctx->progress)
2156 if ((ctx->progress)(ctx, 1, group+1,
2157 ctx->fs->group_desc_count))
2158 return EXT2_ET_CANCEL_REQUESTED;
2159
2160 return 0;
2161 }
2162
2163 /*
2164 * Process the inodes in the "inodes to process" list.
2165 */
2166 static void process_inodes(e2fsck_t ctx, char *block_buf)
2167 {
2168 int i;
2169 struct ext2_inode *old_stashed_inode;
2170 ext2_ino_t old_stashed_ino;
2171 const char *old_operation;
2172 char buf[80];
2173 struct problem_context pctx;
2174
2175 #if 0
2176 printf("begin process_inodes: ");
2177 #endif
2178 if (process_inode_count == 0)
2179 return;
2180 old_operation = ehandler_operation(0);
2181 old_stashed_inode = ctx->stashed_inode;
2182 old_stashed_ino = ctx->stashed_ino;
2183 qsort(inodes_to_process, process_inode_count,
2184 sizeof(struct process_inode_block), process_inode_cmp);
2185 clear_problem_context(&pctx);
2186 for (i=0; i < process_inode_count; i++) {
2187 pctx.inode = ctx->stashed_inode =
2188 (struct ext2_inode *) &inodes_to_process[i].inode;
2189 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
2190
2191 #if 0
2192 printf("%u ", pctx.ino);
2193 #endif
2194 sprintf(buf, _("reading indirect blocks of inode %u"),
2195 pctx.ino);
2196 ehandler_operation(buf);
2197 check_blocks(ctx, &pctx, block_buf,
2198 &inodes_to_process[i].ea_ibody_quota);
2199 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2200 break;
2201 }
2202 ctx->stashed_inode = old_stashed_inode;
2203 ctx->stashed_ino = old_stashed_ino;
2204 process_inode_count = 0;
2205 #if 0
2206 printf("end process inodes\n");
2207 #endif
2208 ehandler_operation(old_operation);
2209 }
2210
2211 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
2212 {
2213 const struct process_inode_block *ib_a =
2214 (const struct process_inode_block *) a;
2215 const struct process_inode_block *ib_b =
2216 (const struct process_inode_block *) b;
2217 int ret;
2218
2219 ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
2220 ib_b->inode.i_block[EXT2_IND_BLOCK]);
2221 if (ret == 0)
2222 /*
2223 * We only call process_inodes() for non-extent
2224 * inodes, so it's OK to pass NULL to
2225 * ext2fs_file_acl_block() here.
2226 */
2227 ret = ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_a->inode)) -
2228 ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_b->inode));
2229 if (ret == 0)
2230 ret = ib_a->ino - ib_b->ino;
2231 return ret;
2232 }
2233
2234 /*
2235 * Mark an inode as being bad in some what
2236 */
2237 static void mark_inode_bad(e2fsck_t ctx, ext2_ino_t ino)
2238 {
2239 struct problem_context pctx;
2240
2241 if (!ctx->inode_bad_map) {
2242 clear_problem_context(&pctx);
2243
2244 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2245 _("bad inode map"), EXT2FS_BMAP64_RBTREE,
2246 "inode_bad_map", &ctx->inode_bad_map);
2247 if (pctx.errcode) {
2248 pctx.num = 3;
2249 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2250 /* Should never get here */
2251 ctx->flags |= E2F_FLAG_ABORT;
2252 return;
2253 }
2254 }
2255 ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino);
2256 }
2257
2258 static void add_casefolded_dir(e2fsck_t ctx, ext2_ino_t ino)
2259 {
2260 struct problem_context pctx;
2261
2262 if (!ctx->casefolded_dirs) {
2263 pctx.errcode = ext2fs_u32_list_create(&ctx->casefolded_dirs, 0);
2264 if (pctx.errcode)
2265 goto error;
2266 }
2267 pctx.errcode = ext2fs_u32_list_add(ctx->casefolded_dirs, ino);
2268 if (pctx.errcode == 0)
2269 return;
2270 error:
2271 fix_problem(ctx, PR_1_ALLOCATE_CASEFOLDED_DIRLIST, &pctx);
2272 /* Should never get here */
2273 ctx->flags |= E2F_FLAG_ABORT;
2274 }
2275
2276 /*
2277 * This procedure will allocate the inode "bb" (badblock) map table
2278 */
2279 static void alloc_bb_map(e2fsck_t ctx)
2280 {
2281 struct problem_context pctx;
2282
2283 clear_problem_context(&pctx);
2284 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2285 _("inode in bad block map"), EXT2FS_BMAP64_RBTREE,
2286 "inode_bb_map", &ctx->inode_bb_map);
2287 if (pctx.errcode) {
2288 pctx.num = 4;
2289 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2290 /* Should never get here */
2291 ctx->flags |= E2F_FLAG_ABORT;
2292 return;
2293 }
2294 }
2295
2296 /*
2297 * This procedure will allocate the inode imagic table
2298 */
2299 static void alloc_imagic_map(e2fsck_t ctx)
2300 {
2301 struct problem_context pctx;
2302
2303 clear_problem_context(&pctx);
2304 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2305 _("imagic inode map"), EXT2FS_BMAP64_RBTREE,
2306 "inode_imagic_map", &ctx->inode_imagic_map);
2307 if (pctx.errcode) {
2308 pctx.num = 5;
2309 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2310 /* Should never get here */
2311 ctx->flags |= E2F_FLAG_ABORT;
2312 return;
2313 }
2314 }
2315
2316 /*
2317 * Marks a block as in use, setting the dup_map if it's been set
2318 * already. Called by process_block and process_bad_block.
2319 *
2320 * WARNING: Assumes checks have already been done to make sure block
2321 * is valid. This is true in both process_block and process_bad_block.
2322 */
2323 static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block)
2324 {
2325 struct problem_context pctx;
2326
2327 clear_problem_context(&pctx);
2328
2329 if (ext2fs_fast_test_block_bitmap2(ctx->block_found_map, block)) {
2330 if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
2331 !(ctx->options & E2F_OPT_UNSHARE_BLOCKS)) {
2332 return;
2333 }
2334 if (!ctx->block_dup_map) {
2335 pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
2336 _("multiply claimed block map"),
2337 EXT2FS_BMAP64_RBTREE, "block_dup_map",
2338 &ctx->block_dup_map);
2339 if (pctx.errcode) {
2340 pctx.num = 3;
2341 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
2342 &pctx);
2343 /* Should never get here */
2344 ctx->flags |= E2F_FLAG_ABORT;
2345 return;
2346 }
2347 }
2348 ext2fs_fast_mark_block_bitmap2(ctx->block_dup_map, block);
2349 } else {
2350 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block);
2351 }
2352 }
2353
2354 /*
2355 * When cluster size is greater than one block, it is caller's responsibility
2356 * to make sure block parameter starts at a cluster boundary.
2357 */
2358 static _INLINE_ void mark_blocks_used(e2fsck_t ctx, blk64_t block,
2359 unsigned int num)
2360 {
2361 if (ext2fs_test_block_bitmap_range2(ctx->block_found_map, block, num))
2362 ext2fs_mark_block_bitmap_range2(ctx->block_found_map, block, num);
2363 else {
2364 unsigned int i;
2365
2366 for (i = 0; i < num; i += EXT2FS_CLUSTER_RATIO(ctx->fs))
2367 mark_block_used(ctx, block + i);
2368 }
2369 }
2370
2371 /*
2372 * Adjust the extended attribute block's reference counts at the end
2373 * of pass 1, either by subtracting out references for EA blocks that
2374 * are still referenced in ctx->refcount, or by adding references for
2375 * EA blocks that had extra references as accounted for in
2376 * ctx->refcount_extra.
2377 */
2378 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
2379 char *block_buf, int adjust_sign)
2380 {
2381 struct ext2_ext_attr_header *header;
2382 struct problem_context pctx;
2383 ext2_filsys fs = ctx->fs;
2384 blk64_t blk;
2385 __u32 should_be;
2386 ea_value_t count;
2387
2388 clear_problem_context(&pctx);
2389
2390 ea_refcount_intr_begin(refcount);
2391 while (1) {
2392 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
2393 break;
2394 pctx.blk = blk;
2395 pctx.errcode = ext2fs_read_ext_attr3(fs, blk, block_buf,
2396 pctx.ino);
2397 if (pctx.errcode) {
2398 fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
2399 return;
2400 }
2401 header = (struct ext2_ext_attr_header *) block_buf;
2402 pctx.blkcount = header->h_refcount;
2403 should_be = header->h_refcount + adjust_sign * (int)count;
2404 pctx.num = should_be;
2405 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
2406 header->h_refcount = should_be;
2407 pctx.errcode = ext2fs_write_ext_attr3(fs, blk,
2408 block_buf,
2409 pctx.ino);
2410 if (pctx.errcode) {
2411 fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT,
2412 &pctx);
2413 continue;
2414 }
2415 }
2416 }
2417 }
2418
2419 /*
2420 * Handle processing the extended attribute blocks
2421 */
2422 static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
2423 char *block_buf, struct ea_quota *ea_block_quota)
2424 {
2425 ext2_filsys fs = ctx->fs;
2426 ext2_ino_t ino = pctx->ino;
2427 struct ext2_inode *inode = pctx->inode;
2428 blk64_t blk;
2429 char * end;
2430 struct ext2_ext_attr_header *header;
2431 struct ext2_ext_attr_entry *first, *entry;
2432 blk64_t quota_blocks = EXT2FS_C2B(fs, 1);
2433 __u64 quota_inodes = 0;
2434 region_t region = 0;
2435 int failed_csum = 0;
2436
2437 ea_block_quota->blocks = 0;
2438 ea_block_quota->inodes = 0;
2439
2440 blk = ext2fs_file_acl_block(fs, inode);
2441 if (blk == 0)
2442 return 0;
2443
2444 /*
2445 * If the Extended attribute flag isn't set, then a non-zero
2446 * file acl means that the inode is corrupted.
2447 *
2448 * Or if the extended attribute block is an invalid block,
2449 * then the inode is also corrupted.
2450 */
2451 if (!ext2fs_has_feature_xattr(fs->super) ||
2452 (blk < fs->super->s_first_data_block) ||
2453 (blk >= ext2fs_blocks_count(fs->super))) {
2454 mark_inode_bad(ctx, ino);
2455 return 0;
2456 }
2457
2458 /* If ea bitmap hasn't been allocated, create it */
2459 if (!ctx->block_ea_map) {
2460 pctx->errcode = e2fsck_allocate_block_bitmap(fs,
2461 _("ext attr block map"),
2462 EXT2FS_BMAP64_RBTREE, "block_ea_map",
2463 &ctx->block_ea_map);
2464 if (pctx->errcode) {
2465 pctx->num = 2;
2466 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
2467 ctx->flags |= E2F_FLAG_ABORT;
2468 return 0;
2469 }
2470 }
2471
2472 /* Create the EA refcount structure if necessary */
2473 if (!ctx->refcount) {
2474 pctx->errcode = ea_refcount_create(0, &ctx->refcount);
2475 if (pctx->errcode) {
2476 pctx->num = 1;
2477 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2478 ctx->flags |= E2F_FLAG_ABORT;
2479 return 0;
2480 }
2481 }
2482
2483 #if 0
2484 /* Debugging text */
2485 printf("Inode %u has EA block %u\n", ino, blk);
2486 #endif
2487
2488 /* Have we seen this EA block before? */
2489 if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) {
2490 ea_block_quota->blocks = EXT2FS_C2B(fs, 1);
2491 ea_block_quota->inodes = 0;
2492
2493 if (ctx->ea_block_quota_blocks) {
2494 ea_refcount_fetch(ctx->ea_block_quota_blocks, blk,
2495 &quota_blocks);
2496 if (quota_blocks)
2497 ea_block_quota->blocks = quota_blocks;
2498 }
2499
2500 if (ctx->ea_block_quota_inodes)
2501 ea_refcount_fetch(ctx->ea_block_quota_inodes, blk,
2502 &ea_block_quota->inodes);
2503
2504 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
2505 return 1;
2506 /* Ooops, this EA was referenced more than it stated */
2507 if (!ctx->refcount_extra) {
2508 pctx->errcode = ea_refcount_create(0,
2509 &ctx->refcount_extra);
2510 if (pctx->errcode) {
2511 pctx->num = 2;
2512 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2513 ctx->flags |= E2F_FLAG_ABORT;
2514 return 0;
2515 }
2516 }
2517 ea_refcount_increment(ctx->refcount_extra, blk, 0);
2518 return 1;
2519 }
2520
2521 /*
2522 * OK, we haven't seen this EA block yet. So we need to
2523 * validate it
2524 */
2525 pctx->blk = blk;
2526 pctx->errcode = ext2fs_read_ext_attr3(fs, blk, block_buf, pctx->ino);
2527 if (pctx->errcode == EXT2_ET_EXT_ATTR_CSUM_INVALID) {
2528 pctx->errcode = 0;
2529 failed_csum = 1;
2530 } else if (pctx->errcode == EXT2_ET_BAD_EA_HEADER)
2531 pctx->errcode = 0;
2532
2533 if (pctx->errcode &&
2534 fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx)) {
2535 pctx->errcode = 0;
2536 goto clear_extattr;
2537 }
2538 header = (struct ext2_ext_attr_header *) block_buf;
2539 pctx->blk = ext2fs_file_acl_block(fs, inode);
2540 if (((ctx->ext_attr_ver == 1) &&
2541 (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
2542 ((ctx->ext_attr_ver == 2) &&
2543 (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
2544 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
2545 goto clear_extattr;
2546 }
2547
2548 if (header->h_blocks != 1) {
2549 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
2550 goto clear_extattr;
2551 }
2552
2553 if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
2554 goto clear_extattr;
2555
2556 region = region_create(0, fs->blocksize);
2557 if (!region) {
2558 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
2559 ctx->flags |= E2F_FLAG_ABORT;
2560 return 0;
2561 }
2562 if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
2563 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2564 goto clear_extattr;
2565 }
2566
2567 first = (struct ext2_ext_attr_entry *)(header+1);
2568 end = block_buf + fs->blocksize;
2569 entry = first;
2570 while ((char *)entry < end && *(__u32 *)entry) {
2571 __u32 hash;
2572
2573 if (region_allocate(region, (char *)entry - (char *)header,
2574 EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
2575 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2576 goto clear_extattr;
2577 break;
2578 }
2579 if ((ctx->ext_attr_ver == 1 &&
2580 (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
2581 (ctx->ext_attr_ver == 2 &&
2582 entry->e_name_index == 0)) {
2583 if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
2584 goto clear_extattr;
2585 break;
2586 }
2587 if (entry->e_value_inum == 0) {
2588 if (entry->e_value_size > EXT2_XATTR_SIZE_MAX ||
2589 (entry->e_value_offs + entry->e_value_size >
2590 fs->blocksize)) {
2591 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
2592 goto clear_extattr;
2593 break;
2594 }
2595 if (entry->e_value_size &&
2596 region_allocate(region, entry->e_value_offs,
2597 EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
2598 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION,
2599 pctx))
2600 goto clear_extattr;
2601 }
2602
2603 hash = ext2fs_ext_attr_hash_entry(entry, block_buf +
2604 entry->e_value_offs);
2605
2606 if (entry->e_hash != hash) {
2607 pctx->num = entry->e_hash;
2608 if (fix_problem(ctx, PR_1_ATTR_HASH, pctx))
2609 goto clear_extattr;
2610 entry->e_hash = hash;
2611 }
2612 } else {
2613 problem_t problem;
2614 blk64_t entry_quota_blocks;
2615
2616 problem = check_large_ea_inode(ctx, entry, pctx,
2617 &entry_quota_blocks);
2618 if (problem && fix_problem(ctx, problem, pctx))
2619 goto clear_extattr;
2620
2621 quota_blocks += entry_quota_blocks;
2622 quota_inodes++;
2623 }
2624
2625 entry = EXT2_EXT_ATTR_NEXT(entry);
2626 }
2627 if (region_allocate(region, (char *)entry - (char *)header, 4)) {
2628 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2629 goto clear_extattr;
2630 }
2631 region_free(region);
2632
2633 /*
2634 * We only get here if there was no other errors that were fixed.
2635 * If there was a checksum fail, ask to correct it.
2636 */
2637 if (failed_csum &&
2638 fix_problem(ctx, PR_1_EA_BLOCK_ONLY_CSUM_INVALID, pctx)) {
2639 pctx->errcode = ext2fs_write_ext_attr3(fs, blk, block_buf,
2640 pctx->ino);
2641 if (pctx->errcode)
2642 return 0;
2643 }
2644
2645 if (quota_blocks != EXT2FS_C2B(fs, 1U)) {
2646 if (!ctx->ea_block_quota_blocks) {
2647 pctx->errcode = ea_refcount_create(0,
2648 &ctx->ea_block_quota_blocks);
2649 if (pctx->errcode) {
2650 pctx->num = 3;
2651 goto refcount_fail;
2652 }
2653 }
2654 ea_refcount_store(ctx->ea_block_quota_blocks, blk,
2655 quota_blocks);
2656 }
2657
2658 if (quota_inodes) {
2659 if (!ctx->ea_block_quota_inodes) {
2660 pctx->errcode = ea_refcount_create(0,
2661 &ctx->ea_block_quota_inodes);
2662 if (pctx->errcode) {
2663 pctx->num = 4;
2664 refcount_fail:
2665 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2666 ctx->flags |= E2F_FLAG_ABORT;
2667 return 0;
2668 }
2669 }
2670
2671 ea_refcount_store(ctx->ea_block_quota_inodes, blk,
2672 quota_inodes);
2673 }
2674 ea_block_quota->blocks = quota_blocks;
2675 ea_block_quota->inodes = quota_inodes;
2676
2677 inc_ea_inode_refs(ctx, pctx, first, end);
2678 ea_refcount_store(ctx->refcount, blk, header->h_refcount - 1);
2679 mark_block_used(ctx, blk);
2680 ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk);
2681 return 1;
2682
2683 clear_extattr:
2684 if (region)
2685 region_free(region);
2686 ext2fs_file_acl_block_set(fs, inode, 0);
2687 e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
2688 return 0;
2689 }
2690
2691 /* Returns 1 if bad htree, 0 if OK */
2692 static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
2693 ext2_ino_t ino, struct ext2_inode *inode,
2694 char *block_buf)
2695 {
2696 struct ext2_dx_root_info *root;
2697 ext2_filsys fs = ctx->fs;
2698 errcode_t retval;
2699 blk64_t blk;
2700
2701 if ((!LINUX_S_ISDIR(inode->i_mode) &&
2702 fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
2703 (!ext2fs_has_feature_dir_index(fs->super) &&
2704 fix_problem(ctx, PR_1_HTREE_SET, pctx)))
2705 return 1;
2706
2707 pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk);
2708
2709 if ((pctx->errcode) ||
2710 (blk == 0) ||
2711 (blk < fs->super->s_first_data_block) ||
2712 (blk >= ext2fs_blocks_count(fs->super))) {
2713 if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2714 return 1;
2715 else
2716 return 0;
2717 }
2718
2719 retval = io_channel_read_blk64(fs->io, blk, 1, block_buf);
2720 if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2721 return 1;
2722
2723 /* XXX should check that beginning matches a directory */
2724 root = (struct ext2_dx_root_info *) (block_buf + 24);
2725
2726 if ((root->reserved_zero || root->info_length < 8) &&
2727 fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2728 return 1;
2729
2730 pctx->num = root->hash_version;
2731 if ((root->hash_version != EXT2_HASH_LEGACY) &&
2732 (root->hash_version != EXT2_HASH_HALF_MD4) &&
2733 (root->hash_version != EXT2_HASH_TEA) &&
2734 (root->hash_version != EXT2_HASH_SIPHASH) &&
2735 fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
2736 return 1;
2737
2738 if (ext4_hash_in_dirent(inode)) {
2739 if (root->hash_version != EXT2_HASH_SIPHASH &&
2740 fix_problem(ctx, PR_1_HTREE_NEEDS_SIPHASH, pctx))
2741 return 1;
2742 } else {
2743 if (root->hash_version == EXT2_HASH_SIPHASH &&
2744 fix_problem(ctx, PR_1_HTREE_CANNOT_SIPHASH, pctx))
2745 return 1;
2746 }
2747
2748 if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
2749 fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
2750 return 1;
2751
2752 pctx->num = root->indirect_levels;
2753 /* if htree level is clearly too high, consider it to be broken */
2754 if (root->indirect_levels > EXT4_HTREE_LEVEL &&
2755 fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
2756 return 1;
2757
2758 /* if level is only maybe too high, LARGE_DIR feature could be unset */
2759 if (root->indirect_levels > ext2_dir_htree_level(fs) &&
2760 !ext2fs_has_feature_largedir(fs->super)) {
2761 int blockbits = EXT2_BLOCK_SIZE_BITS(fs->super) + 10;
2762 unsigned idx_pb = 1 << (blockbits - 3);
2763
2764 /* compare inode size/blocks vs. max-sized 2-level htree */
2765 if (EXT2_I_SIZE(pctx->inode) <
2766 (idx_pb - 1) * (idx_pb - 2) << blockbits &&
2767 pctx->inode->i_blocks <
2768 (idx_pb - 1) * (idx_pb - 2) << (blockbits - 9) &&
2769 fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
2770 return 1;
2771 }
2772
2773 if (root->indirect_levels > EXT4_HTREE_LEVEL_COMPAT ||
2774 ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
2775 ctx->large_dirs++;
2776
2777 return 0;
2778 }
2779
2780 void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
2781 struct ext2_inode *inode, int restart_flag,
2782 const char *source)
2783 {
2784 inode->i_flags = 0;
2785 inode->i_links_count = 0;
2786 ext2fs_icount_store(ctx->inode_link_info, ino, 0);
2787 inode->i_dtime = ctx->now;
2788
2789 /*
2790 * If a special inode has such rotten block mappings that we
2791 * want to clear the whole inode, be sure to actually zap
2792 * the block maps because i_links_count isn't checked for
2793 * special inodes, and we'll end up right back here the next
2794 * time we run fsck.
2795 */
2796 if (ino < EXT2_FIRST_INODE(ctx->fs->super))
2797 memset(inode->i_block, 0, sizeof(inode->i_block));
2798
2799 ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
2800 ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
2801 if (ctx->inode_reg_map)
2802 ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
2803 if (ctx->inode_bad_map)
2804 ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
2805
2806 /*
2807 * If the inode was partially accounted for before processing
2808 * was aborted, we need to restart the pass 1 scan.
2809 */
2810 ctx->flags |= restart_flag;
2811
2812 if (ino == EXT2_BAD_INO)
2813 memset(inode, 0, sizeof(struct ext2_inode));
2814
2815 e2fsck_write_inode(ctx, ino, inode, source);
2816 }
2817
2818 /*
2819 * Use the multiple-blocks reclamation code to fix alignment problems in
2820 * a bigalloc filesystem. We want a logical cluster to map to *only* one
2821 * physical cluster, and we want the block offsets within that cluster to
2822 * line up.
2823 */
2824 static int has_unaligned_cluster_map(e2fsck_t ctx,
2825 blk64_t last_pblk, blk64_t last_lblk,
2826 blk64_t pblk, blk64_t lblk)
2827 {
2828 blk64_t cluster_mask;
2829
2830 if (!ctx->fs->cluster_ratio_bits)
2831 return 0;
2832 cluster_mask = EXT2FS_CLUSTER_MASK(ctx->fs);
2833
2834 /*
2835 * If the block in the logical cluster doesn't align with the block in
2836 * the physical cluster...
2837 */
2838 if ((lblk & cluster_mask) != (pblk & cluster_mask))
2839 return 1;
2840
2841 /*
2842 * If we cross a physical cluster boundary within a logical cluster...
2843 */
2844 if (last_pblk && (lblk & cluster_mask) != 0 &&
2845 EXT2FS_B2C(ctx->fs, lblk) == EXT2FS_B2C(ctx->fs, last_lblk) &&
2846 EXT2FS_B2C(ctx->fs, pblk) != EXT2FS_B2C(ctx->fs, last_pblk))
2847 return 1;
2848
2849 return 0;
2850 }
2851
2852 static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
2853 struct process_block_struct *pb,
2854 blk64_t start_block, blk64_t end_block,
2855 blk64_t eof_block,
2856 ext2_extent_handle_t ehandle,
2857 int try_repairs)
2858 {
2859 struct ext2fs_extent extent;
2860 blk64_t blk, last_lblk;
2861 unsigned int i, n;
2862 int is_dir, is_leaf;
2863 problem_t problem;
2864 struct ext2_extent_info info;
2865 int failed_csum = 0;
2866
2867 if (pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID)
2868 failed_csum = 1;
2869
2870 pctx->errcode = ext2fs_extent_get_info(ehandle, &info);
2871 if (pctx->errcode)
2872 return;
2873 if (!(ctx->options & E2F_OPT_FIXES_ONLY) &&
2874 !pb->eti.force_rebuild &&
2875 info.curr_level < MAX_EXTENT_DEPTH_COUNT) {
2876 struct extent_tree_level *etl;
2877
2878 etl = pb->eti.ext_info + info.curr_level;
2879 etl->num_extents += info.num_entries;
2880 etl->max_extents += info.max_entries;
2881 /*
2882 * Implementation wart: Splitting extent blocks when appending
2883 * will leave the old block with one free entry. Therefore
2884 * unless the node is totally full, pretend that a non-root
2885 * extent block can hold one fewer entry than it actually does,
2886 * so that we don't repeatedly rebuild the extent tree.
2887 */
2888 if (info.curr_level && info.num_entries < info.max_entries)
2889 etl->max_extents--;
2890 }
2891
2892 pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB,
2893 &extent);
2894 while ((pctx->errcode == 0 ||
2895 pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID) &&
2896 info.num_entries-- > 0) {
2897 is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF;
2898 is_dir = LINUX_S_ISDIR(pctx->inode->i_mode);
2899 last_lblk = extent.e_lblk + extent.e_len - 1;
2900
2901 problem = 0;
2902 pctx->blk = extent.e_pblk;
2903 pctx->blk2 = extent.e_lblk;
2904 pctx->num = extent.e_len;
2905 pctx->blkcount = extent.e_lblk + extent.e_len;
2906
2907 if (extent.e_pblk == 0 ||
2908 extent.e_pblk < ctx->fs->super->s_first_data_block ||
2909 extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super))
2910 problem = PR_1_EXTENT_BAD_START_BLK;
2911 else if (extent.e_lblk < start_block)
2912 problem = PR_1_OUT_OF_ORDER_EXTENTS;
2913 else if ((end_block && last_lblk > end_block) &&
2914 !(last_lblk > eof_block &&
2915 ((extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) ||
2916 (pctx->inode->i_flags & EXT4_VERITY_FL))))
2917 problem = PR_1_EXTENT_END_OUT_OF_BOUNDS;
2918 else if (is_leaf && extent.e_len == 0)
2919 problem = PR_1_EXTENT_LENGTH_ZERO;
2920 else if (is_leaf &&
2921 (extent.e_pblk + extent.e_len) >
2922 ext2fs_blocks_count(ctx->fs->super))
2923 problem = PR_1_EXTENT_ENDS_BEYOND;
2924 else if (is_leaf && is_dir && !pctx->inode->i_size_high &&
2925 !ext2fs_has_feature_largedir(ctx->fs->super) &&
2926 ((extent.e_lblk + extent.e_len) >
2927 (1U << (21 - ctx->fs->super->s_log_block_size))))
2928 problem = PR_1_TOOBIG_DIR;
2929
2930 if (is_leaf && problem == 0 && extent.e_len > 0) {
2931 #if 0
2932 printf("extent_region(ino=%u, expect=%llu, "
2933 "lblk=%llu, len=%u)\n", pb->ino,
2934 (unsigned long long) pb->next_lblock,
2935 (unsigned long long) extent.e_lblk,
2936 extent.e_len);
2937 #endif
2938 if (extent.e_lblk < pb->next_lblock)
2939 problem = PR_1_EXTENT_COLLISION;
2940 else if (extent.e_lblk + extent.e_len > pb->next_lblock)
2941 pb->next_lblock = extent.e_lblk + extent.e_len;
2942 }
2943
2944 /*
2945 * Uninitialized blocks in a directory? Clear the flag and
2946 * we'll interpret the blocks later.
2947 */
2948 if (try_repairs && is_dir && problem == 0 &&
2949 (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
2950 fix_problem(ctx, PR_1_UNINIT_DBLOCK, pctx)) {
2951 extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
2952 pb->inode_modified = 1;
2953 pctx->errcode = ext2fs_extent_replace(ehandle, 0,
2954 &extent);
2955 if (pctx->errcode)
2956 return;
2957 failed_csum = 0;
2958 }
2959 #ifdef CONFIG_DEVELOPER_FEATURES
2960 if (try_repairs && !is_dir && problem == 0 &&
2961 (ctx->options & E2F_OPT_CLEAR_UNINIT) &&
2962 (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
2963 fix_problem(ctx, PR_1_CLEAR_UNINIT_EXTENT, pctx)) {
2964 extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
2965 pb->inode_modified = 1;
2966 pctx->errcode = ext2fs_extent_replace(ehandle, 0,
2967 &extent);
2968 if (pctx->errcode)
2969 return;
2970 failed_csum = 0;
2971 }
2972 #endif
2973 if (try_repairs && problem) {
2974 report_problem:
2975 if (fix_problem(ctx, problem, pctx)) {
2976 if (ctx->invalid_bitmaps) {
2977 /*
2978 * If fsck knows the bitmaps are bad,
2979 * skip to the next extent and
2980 * try to clear this extent again
2981 * after fixing the bitmaps, by
2982 * restarting fsck.
2983 */
2984 pctx->errcode = ext2fs_extent_get(
2985 ehandle,
2986 EXT2_EXTENT_NEXT_SIB,
2987 &extent);
2988 ctx->flags |= E2F_FLAG_RESTART_LATER;
2989 if (pctx->errcode ==
2990 EXT2_ET_NO_CURRENT_NODE) {
2991 pctx->errcode = 0;
2992 break;
2993 }
2994 continue;
2995 }
2996 e2fsck_read_bitmaps(ctx);
2997 pb->inode_modified = 1;
2998 pctx->errcode =
2999 ext2fs_extent_delete(ehandle, 0);
3000 if (pctx->errcode) {
3001 pctx->str = "ext2fs_extent_delete";
3002 return;
3003 }
3004 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
3005 if (pctx->errcode &&
3006 pctx->errcode != EXT2_ET_NO_CURRENT_NODE) {
3007 pctx->str = "ext2fs_extent_fix_parents";
3008 return;
3009 }
3010 pctx->errcode = ext2fs_extent_get(ehandle,
3011 EXT2_EXTENT_CURRENT,
3012 &extent);
3013 if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) {
3014 pctx->errcode = 0;
3015 break;
3016 }
3017 failed_csum = 0;
3018 continue;
3019 }
3020 goto next;
3021 }
3022
3023 if (!is_leaf) {
3024 blk64_t lblk = extent.e_lblk;
3025 int next_try_repairs = 1;
3026
3027 blk = extent.e_pblk;
3028
3029 /*
3030 * If this lower extent block collides with critical
3031 * metadata, don't try to repair the damage. Pass 1b
3032 * will reallocate the block; then we can try again.
3033 */
3034 if (pb->ino != EXT2_RESIZE_INO &&
3035 extent.e_pblk < ctx->fs->super->s_blocks_count &&
3036 ext2fs_test_block_bitmap2(ctx->block_metadata_map,
3037 extent.e_pblk)) {
3038 next_try_repairs = 0;
3039 pctx->blk = blk;
3040 fix_problem(ctx,
3041 PR_1_CRITICAL_METADATA_COLLISION,
3042 pctx);
3043 if ((ctx->options & E2F_OPT_NO) == 0)
3044 ctx->flags |= E2F_FLAG_RESTART_LATER;
3045 }
3046 pctx->errcode = ext2fs_extent_get(ehandle,
3047 EXT2_EXTENT_DOWN, &extent);
3048 if (pctx->errcode &&
3049 pctx->errcode != EXT2_ET_EXTENT_CSUM_INVALID) {
3050 pctx->str = "EXT2_EXTENT_DOWN";
3051 problem = PR_1_EXTENT_HEADER_INVALID;
3052 if (!next_try_repairs)
3053 return;
3054 if (pctx->errcode == EXT2_ET_EXTENT_HEADER_BAD)
3055 goto report_problem;
3056 return;
3057 }
3058 /* The next extent should match this index's logical start */
3059 if (extent.e_lblk != lblk) {
3060 struct ext2_extent_info e_info;
3061
3062 pctx->errcode = ext2fs_extent_get_info(ehandle,
3063 &e_info);
3064 if (pctx->errcode) {
3065 pctx->str = "ext2fs_extent_get_info";
3066 return;
3067 }
3068 pctx->blk = lblk;
3069 pctx->blk2 = extent.e_lblk;
3070 pctx->num = e_info.curr_level - 1;
3071 problem = PR_1_EXTENT_INDEX_START_INVALID;
3072 if (fix_problem(ctx, problem, pctx)) {
3073 pb->inode_modified = 1;
3074 pctx->errcode =
3075 ext2fs_extent_fix_parents(ehandle);
3076 if (pctx->errcode) {
3077 pctx->str = "ext2fs_extent_fix_parents";
3078 return;
3079 }
3080 }
3081 }
3082 scan_extent_node(ctx, pctx, pb, extent.e_lblk,
3083 last_lblk, eof_block, ehandle,
3084 next_try_repairs);
3085 if (pctx->errcode)
3086 return;
3087 pctx->errcode = ext2fs_extent_get(ehandle,
3088 EXT2_EXTENT_UP, &extent);
3089 if (pctx->errcode) {
3090 pctx->str = "EXT2_EXTENT_UP";
3091 return;
3092 }
3093 mark_block_used(ctx, blk);
3094 pb->num_blocks++;
3095 goto next;
3096 }
3097
3098 if ((pb->previous_block != 0) &&
3099 (pb->previous_block+1 != extent.e_pblk)) {
3100 if (ctx->options & E2F_OPT_FRAGCHECK) {
3101 char type = '?';
3102
3103 if (pb->is_dir)
3104 type = 'd';
3105 else if (pb->is_reg)
3106 type = 'f';
3107
3108 printf(("%6lu(%c): expecting %6lu "
3109 "actual extent "
3110 "phys %6lu log %lu len %lu\n"),
3111 (unsigned long) pctx->ino, type,
3112 (unsigned long) pb->previous_block+1,
3113 (unsigned long) extent.e_pblk,
3114 (unsigned long) extent.e_lblk,
3115 (unsigned long) extent.e_len);
3116 }
3117 pb->fragmented = 1;
3118 }
3119 /*
3120 * If we notice a gap in the logical block mappings of an
3121 * extent-mapped directory, offer to close the hole by
3122 * moving the logical block down, otherwise we'll go mad in
3123 * pass 3 allocating empty directory blocks to fill the hole.
3124 */
3125 if (try_repairs && is_dir &&
3126 pb->last_block + 1 < extent.e_lblk) {
3127 blk64_t new_lblk;
3128
3129 new_lblk = pb->last_block + 1;
3130 if (EXT2FS_CLUSTER_RATIO(ctx->fs) > 1)
3131 new_lblk = ((new_lblk +
3132 EXT2FS_CLUSTER_RATIO(ctx->fs) - 1) &
3133 ~EXT2FS_CLUSTER_MASK(ctx->fs)) |
3134 (extent.e_pblk &
3135 EXT2FS_CLUSTER_MASK(ctx->fs));
3136 pctx->blk = extent.e_lblk;
3137 pctx->blk2 = new_lblk;
3138 if (fix_problem(ctx, PR_1_COLLAPSE_DBLOCK, pctx)) {
3139 extent.e_lblk = new_lblk;
3140 pb->inode_modified = 1;
3141 pctx->errcode = ext2fs_extent_replace(ehandle,
3142 0, &extent);
3143 if (pctx->errcode) {
3144 pctx->errcode = 0;
3145 goto alloc_later;
3146 }
3147 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
3148 if (pctx->errcode)
3149 goto failed_add_dir_block;
3150 pctx->errcode = ext2fs_extent_goto(ehandle,
3151 extent.e_lblk);
3152 if (pctx->errcode)
3153 goto failed_add_dir_block;
3154 last_lblk = extent.e_lblk + extent.e_len - 1;
3155 failed_csum = 0;
3156 }
3157 }
3158 alloc_later:
3159 if (is_dir) {
3160 while (++pb->last_db_block <
3161 (e2_blkcnt_t) extent.e_lblk) {
3162 pctx->errcode = ext2fs_add_dir_block2(
3163 ctx->fs->dblist,
3164 pb->ino, 0,
3165 pb->last_db_block);
3166 if (pctx->errcode) {
3167 pctx->blk = 0;
3168 pctx->num = pb->last_db_block;
3169 goto failed_add_dir_block;
3170 }
3171 }
3172
3173 for (i = 0; i < extent.e_len; i++) {
3174 pctx->errcode = ext2fs_add_dir_block2(
3175 ctx->fs->dblist,
3176 pctx->ino,
3177 extent.e_pblk + i,
3178 extent.e_lblk + i);
3179 if (pctx->errcode) {
3180 pctx->blk = extent.e_pblk + i;
3181 pctx->num = extent.e_lblk + i;
3182 failed_add_dir_block:
3183 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3184 /* Should never get here */
3185 ctx->flags |= E2F_FLAG_ABORT;
3186 return;
3187 }
3188 }
3189 if (extent.e_len > 0)
3190 pb->last_db_block = extent.e_lblk + extent.e_len - 1;
3191 }
3192 if (has_unaligned_cluster_map(ctx, pb->previous_block,
3193 pb->last_block,
3194 extent.e_pblk,
3195 extent.e_lblk)) {
3196 for (i = 0; i < extent.e_len; i++) {
3197 pctx->blk = extent.e_lblk + i;
3198 pctx->blk2 = extent.e_pblk + i;
3199 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
3200 mark_block_used(ctx, extent.e_pblk + i);
3201 mark_block_used(ctx, extent.e_pblk + i);
3202 }
3203 }
3204
3205 /*
3206 * Check whether first cluster got marked in previous iteration.
3207 */
3208 if (ctx->fs->cluster_ratio_bits &&
3209 pb->previous_block &&
3210 (EXT2FS_B2C(ctx->fs, extent.e_pblk) ==
3211 EXT2FS_B2C(ctx->fs, pb->previous_block)))
3212 /* Set blk to the beginning of next cluster. */
3213 blk = EXT2FS_C2B(
3214 ctx->fs,
3215 EXT2FS_B2C(ctx->fs, extent.e_pblk) + 1);
3216 else
3217 /* Set blk to the beginning of current cluster. */
3218 blk = EXT2FS_C2B(ctx->fs,
3219 EXT2FS_B2C(ctx->fs, extent.e_pblk));
3220
3221 if (blk < extent.e_pblk + extent.e_len) {
3222 mark_blocks_used(ctx, blk,
3223 extent.e_pblk + extent.e_len - blk);
3224 n = DIV_ROUND_UP(extent.e_pblk + extent.e_len - blk,
3225 EXT2FS_CLUSTER_RATIO(ctx->fs));
3226 pb->num_blocks += n;
3227 }
3228 pb->last_block = extent.e_lblk + extent.e_len - 1;
3229 pb->previous_block = extent.e_pblk + extent.e_len - 1;
3230 start_block = pb->last_block = last_lblk;
3231 if (is_leaf && !is_dir &&
3232 !(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT))
3233 pb->last_init_lblock = last_lblk;
3234 next:
3235 pctx->errcode = ext2fs_extent_get(ehandle,
3236 EXT2_EXTENT_NEXT_SIB,
3237 &extent);
3238 }
3239
3240 /* Failed csum but passes checks? Ask to fix checksum. */
3241 if (failed_csum &&
3242 fix_problem(ctx, PR_1_EXTENT_ONLY_CSUM_INVALID, pctx)) {
3243 pb->inode_modified = 1;
3244 pctx->errcode = ext2fs_extent_replace(ehandle, 0, &extent);
3245 if (pctx->errcode)
3246 return;
3247 }
3248
3249 if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT)
3250 pctx->errcode = 0;
3251 }
3252
3253 static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
3254 struct process_block_struct *pb)
3255 {
3256 struct ext2_extent_info info;
3257 struct ext2_inode *inode = pctx->inode;
3258 ext2_extent_handle_t ehandle;
3259 ext2_filsys fs = ctx->fs;
3260 ext2_ino_t ino = pctx->ino;
3261 errcode_t retval;
3262 blk64_t eof_lblk;
3263 struct ext3_extent_header *eh;
3264
3265 /* Check for a proper extent header... */
3266 eh = (struct ext3_extent_header *) &inode->i_block[0];
3267 retval = ext2fs_extent_header_verify(eh, sizeof(inode->i_block));
3268 if (retval) {
3269 if (fix_problem(ctx, PR_1_MISSING_EXTENT_HEADER, pctx))
3270 e2fsck_clear_inode(ctx, ino, inode, 0,
3271 "check_blocks_extents");
3272 pctx->errcode = 0;
3273 return;
3274 }
3275
3276 /* ...since this function doesn't fail if i_block is zeroed. */
3277 pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle);
3278 if (pctx->errcode) {
3279 if (fix_problem(ctx, PR_1_READ_EXTENT, pctx))
3280 e2fsck_clear_inode(ctx, ino, inode, 0,
3281 "check_blocks_extents");
3282 pctx->errcode = 0;
3283 return;
3284 }
3285
3286 retval = ext2fs_extent_get_info(ehandle, &info);
3287 if (retval == 0) {
3288 int max_depth = info.max_depth;
3289
3290 if (max_depth >= MAX_EXTENT_DEPTH_COUNT)
3291 max_depth = MAX_EXTENT_DEPTH_COUNT-1;
3292 ctx->extent_depth_count[max_depth]++;
3293 }
3294
3295 /* Check maximum extent depth */
3296 pctx->blk = info.max_depth;
3297 pctx->blk2 = ext2fs_max_extent_depth(ehandle);
3298 if (pctx->blk2 < pctx->blk &&
3299 fix_problem(ctx, PR_1_EXTENT_BAD_MAX_DEPTH, pctx))
3300 pb->eti.force_rebuild = 1;
3301
3302 /* Can we collect extent tree level stats? */
3303 pctx->blk = MAX_EXTENT_DEPTH_COUNT;
3304 if (pctx->blk2 > pctx->blk)
3305 fix_problem(ctx, PR_1E_MAX_EXTENT_TREE_DEPTH, pctx);
3306 memset(pb->eti.ext_info, 0, sizeof(pb->eti.ext_info));
3307 pb->eti.ino = pb->ino;
3308
3309 pb->next_lblock = 0;
3310
3311 eof_lblk = ((EXT2_I_SIZE(inode) + fs->blocksize - 1) >>
3312 EXT2_BLOCK_SIZE_BITS(fs->super)) - 1;
3313 scan_extent_node(ctx, pctx, pb, 0, 0, eof_lblk, ehandle, 1);
3314 if (pctx->errcode &&
3315 fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) {
3316 pb->num_blocks = 0;
3317 inode->i_blocks = 0;
3318 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
3319 "check_blocks_extents");
3320 pctx->errcode = 0;
3321 }
3322 ext2fs_extent_free(ehandle);
3323
3324 /* Rebuild unless it's a dir and we're rehashing it */
3325 if (LINUX_S_ISDIR(inode->i_mode) &&
3326 e2fsck_dir_will_be_rehashed(ctx, ino))
3327 return;
3328
3329 if (ctx->options & E2F_OPT_CONVERT_BMAP)
3330 e2fsck_rebuild_extents_later(ctx, ino);
3331 else
3332 e2fsck_should_rebuild_extents(ctx, pctx, &pb->eti, &info);
3333 }
3334
3335 /*
3336 * In fact we don't need to check blocks for an inode with inline data
3337 * because this inode doesn't have any blocks. In this function all
3338 * we need to do is add this inode into dblist when it is a directory.
3339 */
3340 static void check_blocks_inline_data(e2fsck_t ctx, struct problem_context *pctx,
3341 struct process_block_struct *pb)
3342 {
3343 int flags;
3344 size_t inline_data_size = 0;
3345
3346 if (!pb->is_dir) {
3347 pctx->errcode = 0;
3348 return;
3349 }
3350
3351 /* Process the dirents in i_block[] as the "first" block. */
3352 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 0);
3353 if (pctx->errcode)
3354 goto err;
3355
3356 /* Process the dirents in the EA as a "second" block. */
3357 flags = ctx->fs->flags;
3358 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3359 pctx->errcode = ext2fs_inline_data_size(ctx->fs, pb->ino,
3360 &inline_data_size);
3361 ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3362 (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3363 if (pctx->errcode) {
3364 pctx->errcode = 0;
3365 return;
3366 }
3367
3368 if (inline_data_size <= EXT4_MIN_INLINE_DATA_SIZE)
3369 return;
3370
3371 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 1);
3372 if (pctx->errcode)
3373 goto err;
3374
3375 return;
3376 err:
3377 pctx->blk = 0;
3378 pctx->num = 0;
3379 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3380 ctx->flags |= E2F_FLAG_ABORT;
3381 }
3382
3383 /*
3384 * This subroutine is called on each inode to account for all of the
3385 * blocks used by that inode.
3386 */
3387 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
3388 char *block_buf, const struct ea_quota *ea_ibody_quota)
3389 {
3390 ext2_filsys fs = ctx->fs;
3391 struct process_block_struct pb;
3392 ext2_ino_t ino = pctx->ino;
3393 struct ext2_inode *inode = pctx->inode;
3394 unsigned bad_size = 0;
3395 int dirty_inode = 0;
3396 int extent_fs;
3397 int inlinedata_fs;
3398 __u64 size;
3399 struct ea_quota ea_block_quota;
3400
3401 pb.ino = ino;
3402 pb.num_blocks = EXT2FS_B2C(ctx->fs,
3403 ea_ibody_quota ? ea_ibody_quota->blocks : 0);
3404 pb.last_block = ~0;
3405 pb.last_init_lblock = -1;
3406 pb.last_db_block = -1;
3407 pb.num_illegal_blocks = 0;
3408 pb.suppress = 0; pb.clear = 0;
3409 pb.fragmented = 0;
3410 pb.compressed = 0;
3411 pb.previous_block = 0;
3412 pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
3413 pb.is_reg = LINUX_S_ISREG(inode->i_mode);
3414 pb.max_blocks = 1U << (31 - fs->super->s_log_block_size);
3415 pb.inode = inode;
3416 pb.pctx = pctx;
3417 pb.ctx = ctx;
3418 pb.inode_modified = 0;
3419 pb.eti.force_rebuild = 0;
3420 pctx->ino = ino;
3421 pctx->errcode = 0;
3422
3423 extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
3424 inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
3425
3426 if (check_ext_attr(ctx, pctx, block_buf, &ea_block_quota)) {
3427 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3428 goto out;
3429 pb.num_blocks += EXT2FS_B2C(ctx->fs, ea_block_quota.blocks);
3430 }
3431
3432 if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL))
3433 check_blocks_inline_data(ctx, pctx, &pb);
3434 else if (ext2fs_inode_has_valid_blocks2(fs, inode)) {
3435 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
3436 check_blocks_extents(ctx, pctx, &pb);
3437 else {
3438 int flags;
3439 /*
3440 * If we've modified the inode, write it out before
3441 * iterate() tries to use it.
3442 */
3443 if (dirty_inode) {
3444 e2fsck_write_inode(ctx, ino, inode,
3445 "check_blocks");
3446 dirty_inode = 0;
3447 }
3448 flags = fs->flags;
3449 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3450 pctx->errcode = ext2fs_block_iterate3(fs, ino,
3451 pb.is_dir ? BLOCK_FLAG_HOLE : 0,
3452 block_buf, process_block, &pb);
3453 /*
3454 * We do not have uninitialized extents in non extent
3455 * files.
3456 */
3457 pb.last_init_lblock = pb.last_block;
3458 /*
3459 * If iterate() changed a block mapping, we have to
3460 * re-read the inode. If we decide to clear the
3461 * inode after clearing some stuff, we'll re-write the
3462 * bad mappings into the inode!
3463 */
3464 if (pb.inode_modified)
3465 e2fsck_read_inode(ctx, ino, inode,
3466 "check_blocks");
3467 fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3468 (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3469
3470 if (ctx->options & E2F_OPT_CONVERT_BMAP) {
3471 #ifdef DEBUG
3472 printf("bmap rebuild ino=%d\n", ino);
3473 #endif
3474 if (!LINUX_S_ISDIR(inode->i_mode) ||
3475 !e2fsck_dir_will_be_rehashed(ctx, ino))
3476 e2fsck_rebuild_extents_later(ctx, ino);
3477 }
3478 }
3479 }
3480 end_problem_latch(ctx, PR_LATCH_BLOCK);
3481 end_problem_latch(ctx, PR_LATCH_TOOBIG);
3482 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3483 goto out;
3484 if (pctx->errcode)
3485 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
3486
3487 if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) {
3488 if (LINUX_S_ISDIR(inode->i_mode))
3489 ctx->fs_fragmented_dir++;
3490 else
3491 ctx->fs_fragmented++;
3492 }
3493
3494 if (pb.clear) {
3495 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
3496 "check_blocks");
3497 return;
3498 }
3499
3500 if (inode->i_flags & EXT2_INDEX_FL) {
3501 if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
3502 inode->i_flags &= ~EXT2_INDEX_FL;
3503 dirty_inode++;
3504 } else {
3505 e2fsck_add_dx_dir(ctx, ino, inode, pb.last_block+1);
3506 }
3507 }
3508
3509 if (!pb.num_blocks && pb.is_dir &&
3510 !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
3511 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
3512 e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
3513 ctx->fs_directory_count--;
3514 return;
3515 }
3516 }
3517
3518 if (ino != quota_type2inum(PRJQUOTA, fs->super) &&
3519 ino != fs->super->s_orphan_file_inum &&
3520 (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INODE(ctx->fs->super)) &&
3521 !(inode->i_flags & EXT4_EA_INODE_FL)) {
3522 quota_data_add(ctx->qctx, (struct ext2_inode_large *) inode,
3523 ino,
3524 pb.num_blocks * EXT2_CLUSTER_SIZE(fs->super));
3525 quota_data_inodes(ctx->qctx, (struct ext2_inode_large *) inode,
3526 ino, (ea_ibody_quota ?
3527 ea_ibody_quota->inodes : 0) +
3528 ea_block_quota.inodes + 1);
3529 }
3530
3531 if (!ext2fs_has_feature_huge_file(fs->super) ||
3532 !(inode->i_flags & EXT4_HUGE_FILE_FL))
3533 pb.num_blocks *= (fs->blocksize / 512);
3534 pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs);
3535 #if 0
3536 printf("inode %u, i_size = %u, last_block = %llu, i_blocks=%llu, num_blocks = %llu\n",
3537 ino, inode->i_size, (unsigned long long) pb.last_block,
3538 (unsigned long long) ext2fs_inode_i_blocks(fs, inode),
3539 (unsigned long long) pb.num_blocks);
3540 #endif
3541 size = EXT2_I_SIZE(inode);
3542 if (pb.is_dir) {
3543 unsigned nblock = size >> EXT2_BLOCK_SIZE_BITS(fs->super);
3544 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
3545 int flags;
3546 size_t sz = 0;
3547 errcode_t err;
3548
3549 flags = ctx->fs->flags;
3550 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3551 err = ext2fs_inline_data_size(ctx->fs, pctx->ino,
3552 &sz);
3553 ctx->fs->flags = (flags &
3554 EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3555 (ctx->fs->flags &
3556 ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3557 if (err || sz != size) {
3558 bad_size = 7;
3559 pctx->num = sz;
3560 }
3561 } else if (size & (fs->blocksize - 1))
3562 bad_size = 5;
3563 else if (nblock > (pb.last_block + 1))
3564 bad_size = 1;
3565 else if (nblock < (pb.last_block + 1)) {
3566 if (((pb.last_block + 1) - nblock) >
3567 fs->super->s_prealloc_dir_blocks)
3568 bad_size = 2;
3569 }
3570 } else {
3571 if ((pb.last_init_lblock >= 0) &&
3572 /* Do not allow initialized allocated blocks past i_size*/
3573 (size < (__u64)pb.last_init_lblock * fs->blocksize) &&
3574 !(inode->i_flags & EXT4_VERITY_FL))
3575 bad_size = 3;
3576 else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
3577 size > ext2_max_sizes[fs->super->s_log_block_size])
3578 /* too big for a direct/indirect-mapped file */
3579 bad_size = 4;
3580 else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
3581 size >
3582 ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1))
3583 /* too big for an extent-based file - 32bit ee_block */
3584 bad_size = 6;
3585 }
3586 /* i_size for symlinks is checked elsewhere */
3587 if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
3588 /* Did inline_data set pctx->num earlier? */
3589 if (bad_size != 7)
3590 pctx->num = (pb.last_block + 1) * fs->blocksize;
3591 pctx->group = bad_size;
3592 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
3593 ext2fs_inode_size_set(fs, inode, pctx->num);
3594 if (EXT2_I_SIZE(inode) == 0 &&
3595 (inode->i_flags & EXT4_INLINE_DATA_FL)) {
3596 memset(inode->i_block, 0,
3597 sizeof(inode->i_block));
3598 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
3599 }
3600 dirty_inode++;
3601 }
3602 pctx->num = 0;
3603 }
3604 if (LINUX_S_ISREG(inode->i_mode) &&
3605 ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
3606 ctx->large_files++;
3607 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
3608 ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) ||
3609 (ext2fs_has_feature_huge_file(fs->super) &&
3610 (inode->i_flags & EXT4_HUGE_FILE_FL) &&
3611 (inode->osd2.linux2.l_i_blocks_hi != 0)))) {
3612 pctx->num = pb.num_blocks;
3613 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
3614 inode->i_blocks = pb.num_blocks;
3615 inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32;
3616 dirty_inode++;
3617 }
3618 pctx->num = 0;
3619 }
3620
3621 /*
3622 * The kernel gets mad if we ask it to allocate bigalloc clusters to
3623 * a block mapped file, so rebuild it as an extent file. We can skip
3624 * symlinks because they're never rewritten.
3625 */
3626 if (ext2fs_has_feature_bigalloc(fs->super) &&
3627 (LINUX_S_ISREG(inode->i_mode) || LINUX_S_ISDIR(inode->i_mode)) &&
3628 ext2fs_inode_data_blocks2(fs, inode) > 0 &&
3629 (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INO(fs->super)) &&
3630 !(inode->i_flags & (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)) &&
3631 fix_problem(ctx, PR_1_NO_BIGALLOC_BLOCKMAP_FILES, pctx)) {
3632 pctx->errcode = e2fsck_rebuild_extents_later(ctx, ino);
3633 if (pctx->errcode)
3634 goto out;
3635 }
3636
3637 if (ctx->dirs_to_hash && pb.is_dir &&
3638 !(ctx->lost_and_found && ctx->lost_and_found == ino) &&
3639 !(inode->i_flags & EXT2_INDEX_FL) &&
3640 ((inode->i_size / fs->blocksize) >= 3))
3641 e2fsck_rehash_dir_later(ctx, ino);
3642
3643 out:
3644 if (dirty_inode)
3645 e2fsck_write_inode(ctx, ino, inode, "check_blocks");
3646 }
3647
3648 #if 0
3649 /*
3650 * Helper function called by process block when an illegal block is
3651 * found. It returns a description about why the block is illegal
3652 */
3653 static char *describe_illegal_block(ext2_filsys fs, blk64_t block)
3654 {
3655 blk64_t super;
3656 int i;
3657 static char problem[80];
3658
3659 super = fs->super->s_first_data_block;
3660 strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
3661 if (block < super) {
3662 sprintf(problem, "< FIRSTBLOCK (%u)", super);
3663 return(problem);
3664 } else if (block >= ext2fs_blocks_count(fs->super)) {
3665 sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super));
3666 return(problem);
3667 }
3668 for (i = 0; i < fs->group_desc_count; i++) {
3669 if (block == super) {
3670 sprintf(problem, "is the superblock in group %d", i);
3671 break;
3672 }
3673 if (block > super &&
3674 block <= (super + fs->desc_blocks)) {
3675 sprintf(problem, "is in the group descriptors "
3676 "of group %d", i);
3677 break;
3678 }
3679 if (block == ext2fs_block_bitmap_loc(fs, i)) {
3680 sprintf(problem, "is the block bitmap of group %d", i);
3681 break;
3682 }
3683 if (block == ext2fs_inode_bitmap_loc(fs, i)) {
3684 sprintf(problem, "is the inode bitmap of group %d", i);
3685 break;
3686 }
3687 if (block >= ext2fs_inode_table_loc(fs, i) &&
3688 (block < ext2fs_inode_table_loc(fs, i)
3689 + fs->inode_blocks_per_group)) {
3690 sprintf(problem, "is in the inode table of group %d",
3691 i);
3692 break;
3693 }
3694 super += fs->super->s_blocks_per_group;
3695 }
3696 return(problem);
3697 }
3698 #endif
3699
3700 /*
3701 * This is a helper function for check_blocks().
3702 */
3703 static int process_block(ext2_filsys fs,
3704 blk64_t *block_nr,
3705 e2_blkcnt_t blockcnt,
3706 blk64_t ref_block EXT2FS_ATTR((unused)),
3707 int ref_offset EXT2FS_ATTR((unused)),
3708 void *priv_data)
3709 {
3710 struct process_block_struct *p;
3711 struct problem_context *pctx;
3712 blk64_t blk = *block_nr;
3713 int ret_code = 0;
3714 problem_t problem = 0;
3715 e2fsck_t ctx;
3716
3717 p = (struct process_block_struct *) priv_data;
3718 pctx = p->pctx;
3719 ctx = p->ctx;
3720
3721 /*
3722 * For a directory, add logical block zero for processing even if it's
3723 * not mapped or we'll be perennially stuck with broken "." and ".."
3724 * entries.
3725 */
3726 if (p->is_dir && blockcnt == 0 && blk == 0) {
3727 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino, 0, 0);
3728 if (pctx->errcode) {
3729 pctx->blk = blk;
3730 pctx->num = blockcnt;
3731 goto failed_add_dir_block;
3732 }
3733 p->last_db_block++;
3734 }
3735
3736 if (blk == 0)
3737 return 0;
3738
3739 #if 0
3740 printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
3741 blockcnt);
3742 #endif
3743
3744 /*
3745 * Simplistic fragmentation check. We merely require that the
3746 * file be contiguous. (Which can never be true for really
3747 * big files that are greater than a block group.)
3748 */
3749 if (p->previous_block && p->ino != EXT2_RESIZE_INO) {
3750 if (p->previous_block+1 != blk) {
3751 if (ctx->options & E2F_OPT_FRAGCHECK) {
3752 char type = '?';
3753
3754 if (p->is_dir)
3755 type = 'd';
3756 else if (p->is_reg)
3757 type = 'f';
3758
3759 printf(_("%6lu(%c): expecting %6lu "
3760 "got phys %6lu (blkcnt %lld)\n"),
3761 (unsigned long) pctx->ino, type,
3762 (unsigned long) p->previous_block+1,
3763 (unsigned long) blk,
3764 (long long) blockcnt);
3765 }
3766 p->fragmented = 1;
3767 }
3768 }
3769
3770 if (p->is_dir && !ext2fs_has_feature_largedir(fs->super) &&
3771 !pctx->inode->i_size_high &&
3772 blockcnt > (1 << (21 - fs->super->s_log_block_size)))
3773 problem = PR_1_TOOBIG_DIR;
3774 if (p->is_dir && p->num_blocks + 1 >= p->max_blocks)
3775 problem = PR_1_TOOBIG_DIR;
3776 if (p->is_reg && p->num_blocks + 1 >= p->max_blocks)
3777 problem = PR_1_TOOBIG_REG;
3778 if (!p->is_dir && !p->is_reg && blockcnt > 0)
3779 problem = PR_1_TOOBIG_SYMLINK;
3780
3781 if (blk < fs->super->s_first_data_block ||
3782 blk >= ext2fs_blocks_count(fs->super))
3783 problem = PR_1_ILLEGAL_BLOCK_NUM;
3784
3785 /*
3786 * If this IND/DIND/TIND block is squatting atop some critical metadata
3787 * (group descriptors, superblock, bitmap, inode table), any write to
3788 * "fix" mapping problems will destroy the metadata. We'll let pass 1b
3789 * fix that and restart fsck.
3790 */
3791 if (blockcnt < 0 &&
3792 p->ino != EXT2_RESIZE_INO &&
3793 blk < ctx->fs->super->s_blocks_count &&
3794 ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk)) {
3795 pctx->blk = blk;
3796 fix_problem(ctx, PR_1_CRITICAL_METADATA_COLLISION, pctx);
3797 if ((ctx->options & E2F_OPT_NO) == 0)
3798 ctx->flags |= E2F_FLAG_RESTART_LATER;
3799 }
3800
3801 if (problem) {
3802 p->num_illegal_blocks++;
3803 /*
3804 * A bit of subterfuge here -- we're trying to fix a block
3805 * mapping, but the IND/DIND/TIND block could have collided
3806 * with some critical metadata. So, fix the in-core mapping so
3807 * iterate won't go insane, but return 0 instead of
3808 * BLOCK_CHANGED so that it won't write the remapping out to
3809 * our multiply linked block.
3810 *
3811 * Even if we previously determined that an *IND block
3812 * conflicts with critical metadata, we must still try to
3813 * iterate the *IND block as if it is an *IND block to find and
3814 * mark the blocks it points to. Better to be overly cautious
3815 * with the used_blocks map so that we don't move the *IND
3816 * block to a block that's really in use!
3817 */
3818 if (p->ino != EXT2_RESIZE_INO &&
3819 ref_block != 0 &&
3820 ext2fs_test_block_bitmap2(ctx->block_metadata_map,
3821 ref_block)) {
3822 *block_nr = 0;
3823 return 0;
3824 }
3825 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
3826 if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
3827 p->clear = 1;
3828 return BLOCK_ABORT;
3829 }
3830 if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
3831 p->suppress = 1;
3832 set_latch_flags(PR_LATCH_BLOCK,
3833 PRL_SUPPRESS, 0);
3834 }
3835 }
3836 pctx->blk = blk;
3837 pctx->blkcount = blockcnt;
3838 if (fix_problem(ctx, problem, pctx)) {
3839 blk = *block_nr = 0;
3840 ret_code = BLOCK_CHANGED;
3841 p->inode_modified = 1;
3842 /*
3843 * If the directory block is too big and is beyond the
3844 * end of the FS, don't bother trying to add it for
3845 * processing -- the kernel would never have created a
3846 * directory this large, and we risk an ENOMEM abort.
3847 * In any case, the toobig handler for extent-based
3848 * directories also doesn't feed toobig blocks to
3849 * pass 2.
3850 */
3851 if (problem == PR_1_TOOBIG_DIR)
3852 return ret_code;
3853 goto mark_dir;
3854 } else
3855 return 0;
3856 }
3857
3858 if (p->ino == EXT2_RESIZE_INO) {
3859 /*
3860 * The resize inode has already be sanity checked
3861 * during pass #0 (the superblock checks). All we
3862 * have to do is mark the double indirect block as
3863 * being in use; all of the other blocks are handled
3864 * by mark_table_blocks()).
3865 */
3866 if (blockcnt == BLOCK_COUNT_DIND)
3867 mark_block_used(ctx, blk);
3868 p->num_blocks++;
3869 } else if (!(ctx->fs->cluster_ratio_bits &&
3870 p->previous_block &&
3871 (EXT2FS_B2C(ctx->fs, blk) ==
3872 EXT2FS_B2C(ctx->fs, p->previous_block)) &&
3873 (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
3874 ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
3875 mark_block_used(ctx, blk);
3876 p->num_blocks++;
3877 } else if (has_unaligned_cluster_map(ctx, p->previous_block,
3878 p->last_block, blk, blockcnt)) {
3879 pctx->blk = blockcnt;
3880 pctx->blk2 = blk;
3881 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
3882 mark_block_used(ctx, blk);
3883 mark_block_used(ctx, blk);
3884 }
3885 if (blockcnt >= 0)
3886 p->last_block = blockcnt;
3887 p->previous_block = blk;
3888 mark_dir:
3889 if (p->is_dir && (blockcnt >= 0)) {
3890 while (++p->last_db_block < blockcnt) {
3891 pctx->errcode = ext2fs_add_dir_block2(fs->dblist,
3892 p->ino, 0,
3893 p->last_db_block);
3894 if (pctx->errcode) {
3895 pctx->blk = 0;
3896 pctx->num = p->last_db_block;
3897 goto failed_add_dir_block;
3898 }
3899 }
3900 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino,
3901 blk, blockcnt);
3902 if (pctx->errcode) {
3903 pctx->blk = blk;
3904 pctx->num = blockcnt;
3905 failed_add_dir_block:
3906 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3907 /* Should never get here */
3908 ctx->flags |= E2F_FLAG_ABORT;
3909 return BLOCK_ABORT;
3910 }
3911 }
3912 return ret_code;
3913 }
3914
3915 static int process_bad_block(ext2_filsys fs,
3916 blk64_t *block_nr,
3917 e2_blkcnt_t blockcnt,
3918 blk64_t ref_block EXT2FS_ATTR((unused)),
3919 int ref_offset EXT2FS_ATTR((unused)),
3920 void *priv_data)
3921 {
3922 struct process_block_struct *p;
3923 blk64_t blk = *block_nr;
3924 blk64_t first_block;
3925 dgrp_t i;
3926 struct problem_context *pctx;
3927 e2fsck_t ctx;
3928
3929 if (!blk)
3930 return 0;
3931
3932 p = (struct process_block_struct *) priv_data;
3933 ctx = p->ctx;
3934 pctx = p->pctx;
3935
3936 pctx->ino = EXT2_BAD_INO;
3937 pctx->blk = blk;
3938 pctx->blkcount = blockcnt;
3939
3940 if ((blk < fs->super->s_first_data_block) ||
3941 (blk >= ext2fs_blocks_count(fs->super))) {
3942 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
3943 *block_nr = 0;
3944 return BLOCK_CHANGED;
3945 } else
3946 return 0;
3947 }
3948
3949 if (blockcnt < 0) {
3950 if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) {
3951 p->bbcheck = 1;
3952 if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
3953 *block_nr = 0;
3954 return BLOCK_CHANGED;
3955 }
3956 } else if (ext2fs_test_block_bitmap2(ctx->block_found_map,
3957 blk)) {
3958 p->bbcheck = 1;
3959 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
3960 pctx)) {
3961 *block_nr = 0;
3962 return BLOCK_CHANGED;
3963 }
3964 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3965 return BLOCK_ABORT;
3966 } else
3967 mark_block_used(ctx, blk);
3968 return 0;
3969 }
3970 #if 0
3971 printf ("DEBUG: Marking %u as bad.\n", blk);
3972 #endif
3973 ctx->fs_badblocks_count++;
3974 /*
3975 * If the block is not used, then mark it as used and return.
3976 * If it is already marked as found, this must mean that
3977 * there's an overlap between the filesystem table blocks
3978 * (bitmaps and inode table) and the bad block list.
3979 */
3980 if (!ext2fs_test_block_bitmap2(ctx->block_found_map, blk)) {
3981 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
3982 return 0;
3983 }
3984 /*
3985 * Try to find the where the filesystem block was used...
3986 */
3987 first_block = fs->super->s_first_data_block;
3988
3989 for (i = 0; i < fs->group_desc_count; i++ ) {
3990 pctx->group = i;
3991 pctx->blk = blk;
3992 if (!ext2fs_bg_has_super(fs, i))
3993 goto skip_super;
3994 if (blk == first_block) {
3995 if (i == 0) {
3996 if (fix_problem(ctx,
3997 PR_1_BAD_PRIMARY_SUPERBLOCK,
3998 pctx)) {
3999 *block_nr = 0;
4000 return BLOCK_CHANGED;
4001 }
4002 return 0;
4003 }
4004 fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
4005 return 0;
4006 }
4007 if ((blk > first_block) &&
4008 (blk <= first_block + fs->desc_blocks)) {
4009 if (i == 0) {
4010 pctx->blk = *block_nr;
4011 if (fix_problem(ctx,
4012 PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
4013 *block_nr = 0;
4014 return BLOCK_CHANGED;
4015 }
4016 return 0;
4017 }
4018 fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
4019 return 0;
4020 }
4021 skip_super:
4022 if (blk == ext2fs_block_bitmap_loc(fs, i)) {
4023 if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
4024 ctx->invalid_block_bitmap_flag[i]++;
4025 ctx->invalid_bitmaps++;
4026 }
4027 return 0;
4028 }
4029 if (blk == ext2fs_inode_bitmap_loc(fs, i)) {
4030 if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
4031 ctx->invalid_inode_bitmap_flag[i]++;
4032 ctx->invalid_bitmaps++;
4033 }
4034 return 0;
4035 }
4036 if ((blk >= ext2fs_inode_table_loc(fs, i)) &&
4037 (blk < (ext2fs_inode_table_loc(fs, i) +
4038 fs->inode_blocks_per_group))) {
4039 /*
4040 * If there are bad blocks in the inode table,
4041 * the inode scan code will try to do
4042 * something reasonable automatically.
4043 */
4044 return 0;
4045 }
4046 first_block += fs->super->s_blocks_per_group;
4047 }
4048 /*
4049 * If we've gotten to this point, then the only
4050 * possibility is that the bad block inode meta data
4051 * is using a bad block.
4052 */
4053 if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
4054 (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
4055 (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
4056 p->bbcheck = 1;
4057 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
4058 *block_nr = 0;
4059 return BLOCK_CHANGED;
4060 }
4061 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
4062 return BLOCK_ABORT;
4063 return 0;
4064 }
4065
4066 pctx->group = -1;
4067
4068 /* Warn user that the block wasn't claimed */
4069 fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
4070
4071 return 0;
4072 }
4073
4074 static void new_table_block(e2fsck_t ctx, blk64_t first_block, dgrp_t group,
4075 const char *name, int num, blk64_t *new_block)
4076 {
4077 ext2_filsys fs = ctx->fs;
4078 dgrp_t last_grp;
4079 blk64_t old_block = *new_block;
4080 blk64_t last_block;
4081 dgrp_t flexbg;
4082 unsigned flexbg_size;
4083 int i, is_flexbg;
4084 char *buf;
4085 struct problem_context pctx;
4086
4087 clear_problem_context(&pctx);
4088
4089 pctx.group = group;
4090 pctx.blk = old_block;
4091 pctx.str = name;
4092
4093 /*
4094 * For flex_bg filesystems, first try to allocate the metadata
4095 * within the flex_bg, and if that fails then try finding the
4096 * space anywhere in the filesystem.
4097 */
4098 is_flexbg = ext2fs_has_feature_flex_bg(fs->super);
4099 if (is_flexbg) {
4100 flexbg_size = 1U << fs->super->s_log_groups_per_flex;
4101 flexbg = group / flexbg_size;
4102 first_block = ext2fs_group_first_block2(fs,
4103 flexbg_size * flexbg);
4104 last_grp = group | (flexbg_size - 1);
4105 if (last_grp >= fs->group_desc_count)
4106 last_grp = fs->group_desc_count - 1;
4107 last_block = ext2fs_group_last_block2(fs, last_grp);
4108 } else
4109 last_block = ext2fs_group_last_block2(fs, group);
4110 pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block,
4111 num, ctx->block_found_map,
4112 new_block);
4113 if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL))
4114 pctx.errcode = ext2fs_get_free_blocks2(fs,
4115 fs->super->s_first_data_block,
4116 ext2fs_blocks_count(fs->super),
4117 num, ctx->block_found_map, new_block);
4118 if (pctx.errcode) {
4119 pctx.num = num;
4120 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
4121 ext2fs_unmark_valid(fs);
4122 ctx->flags |= E2F_FLAG_ABORT;
4123 return;
4124 }
4125 pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
4126 if (pctx.errcode) {
4127 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
4128 ext2fs_unmark_valid(fs);
4129 ctx->flags |= E2F_FLAG_ABORT;
4130 return;
4131 }
4132 ext2fs_mark_super_dirty(fs);
4133 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
4134 pctx.blk2 = *new_block;
4135 fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
4136 PR_1_RELOC_TO), &pctx);
4137 pctx.blk2 = 0;
4138 for (i = 0; i < num; i++) {
4139 pctx.blk = i;
4140 ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i);
4141 if (old_block) {
4142 pctx.errcode = io_channel_read_blk64(fs->io,
4143 old_block + i, 1, buf);
4144 if (pctx.errcode)
4145 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
4146 pctx.blk = (*new_block) + i;
4147 pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk,
4148 1, buf);
4149 } else {
4150 pctx.blk = (*new_block) + i;
4151 pctx.errcode = ext2fs_zero_blocks2(fs, pctx.blk, 1,
4152 NULL, NULL);
4153 }
4154
4155 if (pctx.errcode)
4156 fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
4157 }
4158 ext2fs_free_mem(&buf);
4159 }
4160
4161 /*
4162 * This routine gets called at the end of pass 1 if bad blocks are
4163 * detected in the superblock, group descriptors, inode_bitmaps, or
4164 * block bitmaps. At this point, all of the blocks have been mapped
4165 * out, so we can try to allocate new block(s) to replace the bad
4166 * blocks.
4167 */
4168 static void handle_fs_bad_blocks(e2fsck_t ctx)
4169 {
4170 ext2_filsys fs = ctx->fs;
4171 dgrp_t i;
4172 blk64_t first_block;
4173 blk64_t new_blk;
4174
4175 for (i = 0; i < fs->group_desc_count; i++) {
4176 first_block = ext2fs_group_first_block2(fs, i);
4177
4178 if (ctx->invalid_block_bitmap_flag[i]) {
4179 new_blk = ext2fs_block_bitmap_loc(fs, i);
4180 new_table_block(ctx, first_block, i, _("block bitmap"),
4181 1, &new_blk);
4182 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
4183 }
4184 if (ctx->invalid_inode_bitmap_flag[i]) {
4185 new_blk = ext2fs_inode_bitmap_loc(fs, i);
4186 new_table_block(ctx, first_block, i, _("inode bitmap"),
4187 1, &new_blk);
4188 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
4189 }
4190 if (ctx->invalid_inode_table_flag[i]) {
4191 new_blk = ext2fs_inode_table_loc(fs, i);
4192 new_table_block(ctx, first_block, i, _("inode table"),
4193 fs->inode_blocks_per_group,
4194 &new_blk);
4195 ext2fs_inode_table_loc_set(fs, i, new_blk);
4196 ctx->flags |= E2F_FLAG_RESTART;
4197 }
4198 }
4199 ctx->invalid_bitmaps = 0;
4200 }
4201
4202 /*
4203 * This routine marks all blocks which are used by the superblock,
4204 * group descriptors, inode bitmaps, and block bitmaps.
4205 */
4206 static void mark_table_blocks(e2fsck_t ctx)
4207 {
4208 ext2_filsys fs = ctx->fs;
4209 blk64_t b;
4210 dgrp_t i;
4211 unsigned int j;
4212 struct problem_context pctx;
4213
4214 clear_problem_context(&pctx);
4215
4216 for (i = 0; i < fs->group_desc_count; i++) {
4217 pctx.group = i;
4218
4219 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
4220 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_metadata_map);
4221
4222 /*
4223 * Mark the blocks used for the inode table
4224 */
4225 if (ext2fs_inode_table_loc(fs, i)) {
4226 for (j = 0, b = ext2fs_inode_table_loc(fs, i);
4227 j < fs->inode_blocks_per_group;
4228 j++, b++) {
4229 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4230 b)) {
4231 pctx.blk = b;
4232 if (!ctx->invalid_inode_table_flag[i] &&
4233 fix_problem(ctx,
4234 PR_1_ITABLE_CONFLICT, &pctx)) {
4235 ctx->invalid_inode_table_flag[i]++;
4236 ctx->invalid_bitmaps++;
4237 }
4238 } else {
4239 ext2fs_mark_block_bitmap2(
4240 ctx->block_found_map, b);
4241 ext2fs_mark_block_bitmap2(
4242 ctx->block_metadata_map, b);
4243 }
4244 }
4245 }
4246
4247 /*
4248 * Mark block used for the block bitmap
4249 */
4250 if (ext2fs_block_bitmap_loc(fs, i)) {
4251 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4252 ext2fs_block_bitmap_loc(fs, i))) {
4253 pctx.blk = ext2fs_block_bitmap_loc(fs, i);
4254 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
4255 ctx->invalid_block_bitmap_flag[i]++;
4256 ctx->invalid_bitmaps++;
4257 }
4258 } else {
4259 ext2fs_mark_block_bitmap2(ctx->block_found_map,
4260 ext2fs_block_bitmap_loc(fs, i));
4261 ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
4262 ext2fs_block_bitmap_loc(fs, i));
4263 }
4264 }
4265 /*
4266 * Mark block used for the inode bitmap
4267 */
4268 if (ext2fs_inode_bitmap_loc(fs, i)) {
4269 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4270 ext2fs_inode_bitmap_loc(fs, i))) {
4271 pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
4272 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
4273 ctx->invalid_inode_bitmap_flag[i]++;
4274 ctx->invalid_bitmaps++;
4275 }
4276 } else {
4277 ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
4278 ext2fs_inode_bitmap_loc(fs, i));
4279 ext2fs_mark_block_bitmap2(ctx->block_found_map,
4280 ext2fs_inode_bitmap_loc(fs, i));
4281 }
4282 }
4283 }
4284 }
4285
4286 /*
4287 * These subroutines short circuits ext2fs_get_blocks and
4288 * ext2fs_check_directory; we use them since we already have the inode
4289 * structure, so there's no point in letting the ext2fs library read
4290 * the inode again.
4291 */
4292 static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
4293 blk_t *blocks)
4294 {
4295 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4296 int i;
4297
4298 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4299 return EXT2_ET_CALLBACK_NOTHANDLED;
4300
4301 for (i=0; i < EXT2_N_BLOCKS; i++)
4302 blocks[i] = ctx->stashed_inode->i_block[i];
4303 return 0;
4304 }
4305
4306 static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
4307 struct ext2_inode *inode)
4308 {
4309 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4310
4311 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4312 return EXT2_ET_CALLBACK_NOTHANDLED;
4313 *inode = *ctx->stashed_inode;
4314 return 0;
4315 }
4316
4317 static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
4318 struct ext2_inode *inode)
4319 {
4320 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4321
4322 if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
4323 (inode != ctx->stashed_inode))
4324 *ctx->stashed_inode = *inode;
4325 return EXT2_ET_CALLBACK_NOTHANDLED;
4326 }
4327
4328 static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
4329 {
4330 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4331
4332 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4333 return EXT2_ET_CALLBACK_NOTHANDLED;
4334
4335 if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
4336 return EXT2_ET_NO_DIRECTORY;
4337 return 0;
4338 }
4339
4340 static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal,
4341 blk64_t *ret)
4342 {
4343 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4344 errcode_t retval;
4345 blk64_t new_block;
4346
4347 if (ctx->block_found_map) {
4348 retval = ext2fs_new_block2(fs, goal, ctx->block_found_map,
4349 &new_block);
4350 if (retval)
4351 return retval;
4352 if (fs->block_map) {
4353 ext2fs_mark_block_bitmap2(fs->block_map, new_block);
4354 ext2fs_mark_bb_dirty(fs);
4355 }
4356 } else {
4357 if (!fs->block_map) {
4358 retval = ext2fs_read_block_bitmap(fs);
4359 if (retval)
4360 return retval;
4361 }
4362
4363 retval = ext2fs_new_block2(fs, goal, fs->block_map, &new_block);
4364 if (retval)
4365 return retval;
4366 }
4367
4368 *ret = new_block;
4369 return (0);
4370 }
4371
4372 static errcode_t e2fsck_new_range(ext2_filsys fs, int flags, blk64_t goal,
4373 blk64_t len, blk64_t *pblk, blk64_t *plen)
4374 {
4375 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4376 errcode_t retval;
4377
4378 if (ctx->block_found_map)
4379 return ext2fs_new_range(fs, flags, goal, len,
4380 ctx->block_found_map, pblk, plen);
4381
4382 if (!fs->block_map) {
4383 retval = ext2fs_read_block_bitmap(fs);
4384 if (retval)
4385 return retval;
4386 }
4387
4388 return ext2fs_new_range(fs, flags, goal, len, fs->block_map,
4389 pblk, plen);
4390 }
4391
4392 static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
4393 {
4394 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4395
4396 /* Never free a critical metadata block */
4397 if (ctx->block_found_map &&
4398 ctx->block_metadata_map &&
4399 inuse < 0 &&
4400 ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk))
4401 return;
4402
4403 if (ctx->block_found_map) {
4404 if (inuse > 0)
4405 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
4406 else
4407 ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk);
4408 }
4409 }
4410
4411 static void e2fsck_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
4412 blk_t num, int inuse)
4413 {
4414 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4415
4416 /* Never free a critical metadata block */
4417 if (ctx->block_found_map &&
4418 ctx->block_metadata_map &&
4419 inuse < 0 &&
4420 ext2fs_test_block_bitmap_range2(ctx->block_metadata_map, blk, num))
4421 return;
4422
4423 if (ctx->block_found_map) {
4424 if (inuse > 0)
4425 ext2fs_mark_block_bitmap_range2(ctx->block_found_map,
4426 blk, num);
4427 else
4428 ext2fs_unmark_block_bitmap_range2(ctx->block_found_map,
4429 blk, num);
4430 }
4431 }
4432
4433 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts)
4434 {
4435 ext2_filsys fs = ctx->fs;
4436
4437 if (use_shortcuts) {
4438 fs->get_blocks = pass1_get_blocks;
4439 fs->check_directory = pass1_check_directory;
4440 fs->read_inode = pass1_read_inode;
4441 fs->write_inode = pass1_write_inode;
4442 ctx->stashed_ino = 0;
4443 } else {
4444 fs->get_blocks = 0;
4445 fs->check_directory = 0;
4446 fs->read_inode = 0;
4447 fs->write_inode = 0;
4448 }
4449 }
4450
4451 void e2fsck_intercept_block_allocations(e2fsck_t ctx)
4452 {
4453 ext2fs_set_alloc_block_callback(ctx->fs, e2fsck_get_alloc_block, 0);
4454 ext2fs_set_block_alloc_stats_callback(ctx->fs,
4455 e2fsck_block_alloc_stats, 0);
4456 ext2fs_set_new_range_callback(ctx->fs, e2fsck_new_range, NULL);
4457 ext2fs_set_block_alloc_stats_range_callback(ctx->fs,
4458 e2fsck_block_alloc_stats_range, NULL);
4459 }
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