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e2fsck: make the low dtime check consistent when using the backup superblock
[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 blocks are in use. (block_found_map)
27 * - A bitmap of which blocks are in use by two inodes (block_dup_map)
28 * - The data blocks of the directory inodes. (dir_map)
29 * - Ref counts for ea_inodes. (ea_inode_refs)
30 *
31 * Pass 1 is designed to stash away enough information so that the
32 * other passes should not need to read in the inode information
33 * during the normal course of a filesystem check. (Although if an
34 * inconsistency is detected, other passes may need to read in an
35 * inode to fix it.)
36 *
37 * Note that pass 1B will be invoked if there are any duplicate blocks
38 * found.
39 */
40
41 #define _GNU_SOURCE 1 /* get strnlen() */
42 #include "config.h"
43 #include <string.h>
44 #include <time.h>
45 #ifdef HAVE_ERRNO_H
46 #include <errno.h>
47 #endif
48
49 #include "e2fsck.h"
50 #include <ext2fs/ext2_ext_attr.h>
51 #include <e2p/e2p.h>
52
53 #include "problem.h"
54
55 #ifdef NO_INLINE_FUNCS
56 #define _INLINE_
57 #else
58 #define _INLINE_ inline
59 #endif
60
61 #undef DEBUG
62
63 struct ea_quota {
64 blk64_t blocks;
65 __u64 inodes;
66 };
67
68 static int process_block(ext2_filsys fs, blk64_t *blocknr,
69 e2_blkcnt_t blockcnt, blk64_t ref_blk,
70 int ref_offset, void *priv_data);
71 static int process_bad_block(ext2_filsys fs, blk64_t *block_nr,
72 e2_blkcnt_t blockcnt, blk64_t ref_blk,
73 int ref_offset, void *priv_data);
74 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
75 char *block_buf,
76 const struct ea_quota *ea_ibody_quota);
77 static void mark_table_blocks(e2fsck_t ctx);
78 static void alloc_bb_map(e2fsck_t ctx);
79 static void alloc_imagic_map(e2fsck_t ctx);
80 static void mark_inode_bad(e2fsck_t ctx, ino_t ino);
81 static void add_encrypted_dir(e2fsck_t ctx, ino_t ino);
82 static void handle_fs_bad_blocks(e2fsck_t ctx);
83 static void process_inodes(e2fsck_t ctx, char *block_buf);
84 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b);
85 static errcode_t scan_callback(ext2_filsys fs, ext2_inode_scan scan,
86 dgrp_t group, void * priv_data);
87 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
88 char *block_buf, int adjust_sign);
89 /* static char *describe_illegal_block(ext2_filsys fs, blk64_t block); */
90
91 struct process_block_struct {
92 ext2_ino_t ino;
93 unsigned is_dir:1, is_reg:1, clear:1, suppress:1,
94 fragmented:1, compressed:1, bbcheck:1,
95 inode_modified:1;
96 blk64_t num_blocks;
97 blk64_t max_blocks;
98 blk64_t last_block;
99 e2_blkcnt_t last_init_lblock;
100 e2_blkcnt_t last_db_block;
101 int num_illegal_blocks;
102 blk64_t previous_block;
103 struct ext2_inode *inode;
104 struct problem_context *pctx;
105 ext2fs_block_bitmap fs_meta_blocks;
106 e2fsck_t ctx;
107 blk64_t next_lblock;
108 struct extent_tree_info eti;
109 };
110
111 struct process_inode_block {
112 ext2_ino_t ino;
113 struct ea_quota ea_ibody_quota;
114 struct ext2_inode_large inode;
115 };
116
117 struct scan_callback_struct {
118 e2fsck_t ctx;
119 char *block_buf;
120 };
121
122 /*
123 * For the inodes to process list.
124 */
125 static struct process_inode_block *inodes_to_process;
126 static int process_inode_count;
127
128 static __u64 ext2_max_sizes[EXT2_MAX_BLOCK_LOG_SIZE -
129 EXT2_MIN_BLOCK_LOG_SIZE + 1];
130
131 /*
132 * Free all memory allocated by pass1 in preparation for restarting
133 * things.
134 */
135 static void unwind_pass1(ext2_filsys fs EXT2FS_ATTR((unused)))
136 {
137 ext2fs_free_mem(&inodes_to_process);
138 inodes_to_process = 0;
139 }
140
141 /*
142 * Check to make sure a device inode is real. Returns 1 if the device
143 * checks out, 0 if not.
144 *
145 * Note: this routine is now also used to check FIFO's and Sockets,
146 * since they have the same requirement; the i_block fields should be
147 * zero.
148 */
149 int e2fsck_pass1_check_device_inode(ext2_filsys fs EXT2FS_ATTR((unused)),
150 struct ext2_inode *inode)
151 {
152 int i;
153
154 /*
155 * If the index or extents flag is set, then this is a bogus
156 * device/fifo/socket
157 */
158 if (inode->i_flags & (EXT2_INDEX_FL | EXT4_EXTENTS_FL))
159 return 0;
160
161 /*
162 * We should be able to do the test below all the time, but
163 * because the kernel doesn't forcibly clear the device
164 * inode's additional i_block fields, there are some rare
165 * occasions when a legitimate device inode will have non-zero
166 * additional i_block fields. So for now, we only complain
167 * when the immutable flag is set, which should never happen
168 * for devices. (And that's when the problem is caused, since
169 * you can't set or clear immutable flags for devices.) Once
170 * the kernel has been fixed we can change this...
171 */
172 if (inode->i_flags & (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)) {
173 for (i=4; i < EXT2_N_BLOCKS; i++)
174 if (inode->i_block[i])
175 return 0;
176 }
177 return 1;
178 }
179
180 /*
181 * Check to make sure a symlink inode is real. Returns 1 if the symlink
182 * checks out, 0 if not.
183 */
184 int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino,
185 struct ext2_inode *inode, char *buf)
186 {
187 unsigned int buflen;
188 unsigned int len;
189
190 if ((inode->i_size_high || inode->i_size == 0) ||
191 (inode->i_flags & EXT2_INDEX_FL))
192 return 0;
193
194 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
195 size_t inline_size;
196
197 if (inode->i_flags & EXT4_EXTENTS_FL)
198 return 0;
199 if (ext2fs_inline_data_size(fs, ino, &inline_size))
200 return 0;
201 if (inode->i_size != inline_size)
202 return 0;
203
204 return 1;
205 }
206
207 if (ext2fs_is_fast_symlink(inode)) {
208 if (inode->i_flags & EXT4_EXTENTS_FL)
209 return 0;
210 buf = (char *)inode->i_block;
211 buflen = sizeof(inode->i_block);
212 } else {
213 ext2_extent_handle_t handle;
214 struct ext2_extent_info info;
215 struct ext2fs_extent extent;
216 blk64_t blk;
217 int i;
218
219 if (inode->i_flags & EXT4_EXTENTS_FL) {
220 if (ext2fs_extent_open2(fs, ino, inode, &handle))
221 return 0;
222 if (ext2fs_extent_get_info(handle, &info) ||
223 (info.num_entries != 1) ||
224 (info.max_depth != 0)) {
225 ext2fs_extent_free(handle);
226 return 0;
227 }
228 if (ext2fs_extent_get(handle, EXT2_EXTENT_ROOT,
229 &extent) ||
230 (extent.e_lblk != 0) ||
231 (extent.e_len != 1)) {
232 ext2fs_extent_free(handle);
233 return 0;
234 }
235 blk = extent.e_pblk;
236 ext2fs_extent_free(handle);
237 } else {
238 blk = inode->i_block[0];
239
240 for (i = 1; i < EXT2_N_BLOCKS; i++)
241 if (inode->i_block[i])
242 return 0;
243 }
244
245 if (blk < fs->super->s_first_data_block ||
246 blk >= ext2fs_blocks_count(fs->super))
247 return 0;
248
249 if (io_channel_read_blk64(fs->io, blk, 1, buf))
250 return 0;
251
252 buflen = fs->blocksize;
253 }
254
255 if (inode->i_flags & EXT4_ENCRYPT_FL)
256 len = ext2fs_le16_to_cpu(*(__u16 *)buf) + 2;
257 else
258 len = strnlen(buf, buflen);
259
260 if (len >= buflen)
261 return 0;
262
263 if (len != inode->i_size)
264 return 0;
265 return 1;
266 }
267
268 /*
269 * If the extents or inlinedata flags are set on the inode, offer to clear 'em.
270 */
271 #define BAD_SPECIAL_FLAGS (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)
272 static void check_extents_inlinedata(e2fsck_t ctx,
273 struct problem_context *pctx)
274 {
275 if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
276 return;
277
278 if (!fix_problem(ctx, PR_1_SPECIAL_EXTENTS_IDATA, pctx))
279 return;
280
281 pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
282 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
283 }
284 #undef BAD_SPECIAL_FLAGS
285
286 /*
287 * If the immutable (or append-only) flag is set on the inode, offer
288 * to clear it.
289 */
290 #define BAD_SPECIAL_FLAGS (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)
291 static void check_immutable(e2fsck_t ctx, struct problem_context *pctx)
292 {
293 if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
294 return;
295
296 if (!fix_problem(ctx, PR_1_SET_IMMUTABLE, pctx))
297 return;
298
299 pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
300 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
301 }
302
303 /*
304 * If device, fifo or socket, check size is zero -- if not offer to
305 * clear it
306 */
307 static void check_size(e2fsck_t ctx, struct problem_context *pctx)
308 {
309 struct ext2_inode *inode = pctx->inode;
310
311 if (EXT2_I_SIZE(inode) == 0)
312 return;
313
314 if (!fix_problem(ctx, PR_1_SET_NONZSIZE, pctx))
315 return;
316
317 ext2fs_inode_size_set(ctx->fs, inode, 0);
318 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
319 }
320
321 /*
322 * For a given size, calculate how many blocks would be charged towards quota.
323 */
324 static blk64_t size_to_quota_blocks(ext2_filsys fs, size_t size)
325 {
326 blk64_t clusters;
327
328 clusters = DIV_ROUND_UP(size, fs->blocksize << fs->cluster_ratio_bits);
329 return EXT2FS_C2B(fs, clusters);
330 }
331
332 /*
333 * Check validity of EA inode. Return 0 if EA inode is valid, otherwise return
334 * the problem code.
335 */
336 static problem_t check_large_ea_inode(e2fsck_t ctx,
337 struct ext2_ext_attr_entry *entry,
338 struct problem_context *pctx,
339 blk64_t *quota_blocks)
340 {
341 struct ext2_inode inode;
342 __u32 hash;
343 errcode_t retval;
344
345 /* Check if inode is within valid range */
346 if ((entry->e_value_inum < EXT2_FIRST_INODE(ctx->fs->super)) ||
347 (entry->e_value_inum > ctx->fs->super->s_inodes_count)) {
348 pctx->num = entry->e_value_inum;
349 return PR_1_ATTR_VALUE_EA_INODE;
350 }
351
352 e2fsck_read_inode(ctx, entry->e_value_inum, &inode, "pass1");
353
354 retval = ext2fs_ext_attr_hash_entry2(ctx->fs, entry, NULL, &hash);
355 if (retval) {
356 com_err("check_large_ea_inode", retval,
357 _("while hashing entry with e_value_inum = %u"),
358 entry->e_value_inum);
359 fatal_error(ctx, 0);
360 }
361
362 if (hash == entry->e_hash) {
363 *quota_blocks = size_to_quota_blocks(ctx->fs,
364 entry->e_value_size);
365 } else {
366 /* This might be an old Lustre-style ea_inode reference. */
367 if (inode.i_mtime == pctx->ino &&
368 inode.i_generation == pctx->inode->i_generation) {
369 *quota_blocks = 0;
370 } else {
371 /* If target inode is also missing EA_INODE flag,
372 * this is likely to be a bad reference.
373 */
374 if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
375 pctx->num = entry->e_value_inum;
376 return PR_1_ATTR_VALUE_EA_INODE;
377 } else {
378 pctx->num = entry->e_hash;
379 return PR_1_ATTR_HASH;
380 }
381 }
382 }
383
384 if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
385 pctx->num = entry->e_value_inum;
386 if (fix_problem(ctx, PR_1_ATTR_SET_EA_INODE_FL, pctx)) {
387 inode.i_flags |= EXT4_EA_INODE_FL;
388 ext2fs_write_inode(ctx->fs, entry->e_value_inum,
389 &inode);
390 } else {
391 return PR_1_ATTR_NO_EA_INODE_FL;
392 }
393 }
394 return 0;
395 }
396
397 static void inc_ea_inode_refs(e2fsck_t ctx, struct problem_context *pctx,
398 struct ext2_ext_attr_entry *first, void *end)
399 {
400 struct ext2_ext_attr_entry *entry;
401
402 for (entry = first;
403 (void *)entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry);
404 entry = EXT2_EXT_ATTR_NEXT(entry)) {
405 if (!entry->e_value_inum)
406 continue;
407 if (!ctx->ea_inode_refs) {
408 pctx->errcode = ea_refcount_create(0,
409 &ctx->ea_inode_refs);
410 if (pctx->errcode) {
411 pctx->num = 4;
412 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
413 ctx->flags |= E2F_FLAG_ABORT;
414 return;
415 }
416 }
417 ea_refcount_increment(ctx->ea_inode_refs, entry->e_value_inum,
418 0);
419 }
420 }
421
422 static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx,
423 struct ea_quota *ea_ibody_quota)
424 {
425 struct ext2_super_block *sb = ctx->fs->super;
426 struct ext2_inode_large *inode;
427 struct ext2_ext_attr_entry *entry;
428 char *start, *header, *end;
429 unsigned int storage_size, remain;
430 problem_t problem = 0;
431 region_t region = 0;
432
433 ea_ibody_quota->blocks = 0;
434 ea_ibody_quota->inodes = 0;
435
436 inode = (struct ext2_inode_large *) pctx->inode;
437 storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE -
438 inode->i_extra_isize;
439 header = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
440 inode->i_extra_isize;
441 end = header + storage_size;
442 start = header + sizeof(__u32);
443 entry = (struct ext2_ext_attr_entry *) start;
444
445 /* scan all entry's headers first */
446
447 /* take finish entry 0UL into account */
448 remain = storage_size - sizeof(__u32);
449
450 region = region_create(0, storage_size);
451 if (!region) {
452 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
453 problem = 0;
454 ctx->flags |= E2F_FLAG_ABORT;
455 return;
456 }
457 if (region_allocate(region, 0, sizeof(__u32))) {
458 problem = PR_1_INODE_EA_ALLOC_COLLISION;
459 goto fix;
460 }
461
462 while (remain >= sizeof(struct ext2_ext_attr_entry) &&
463 !EXT2_EXT_IS_LAST_ENTRY(entry)) {
464 __u32 hash;
465
466 if (region_allocate(region, (char *)entry - (char *)header,
467 EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
468 problem = PR_1_INODE_EA_ALLOC_COLLISION;
469 goto fix;
470 }
471
472 /* header eats this space */
473 remain -= sizeof(struct ext2_ext_attr_entry);
474
475 /* is attribute name valid? */
476 if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) {
477 pctx->num = entry->e_name_len;
478 problem = PR_1_ATTR_NAME_LEN;
479 goto fix;
480 }
481
482 /* attribute len eats this space */
483 remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
484
485 if (entry->e_value_inum == 0) {
486 /* check value size */
487 if (entry->e_value_size > remain) {
488 pctx->num = entry->e_value_size;
489 problem = PR_1_ATTR_VALUE_SIZE;
490 goto fix;
491 }
492
493 if (entry->e_value_size &&
494 region_allocate(region,
495 sizeof(__u32) + entry->e_value_offs,
496 EXT2_EXT_ATTR_SIZE(
497 entry->e_value_size))) {
498 problem = PR_1_INODE_EA_ALLOC_COLLISION;
499 goto fix;
500 }
501
502 hash = ext2fs_ext_attr_hash_entry(entry,
503 start + entry->e_value_offs);
504
505 /* e_hash may be 0 in older inode's ea */
506 if (entry->e_hash != 0 && entry->e_hash != hash) {
507 pctx->num = entry->e_hash;
508 problem = PR_1_ATTR_HASH;
509 goto fix;
510 }
511 } else {
512 blk64_t quota_blocks;
513
514 problem = check_large_ea_inode(ctx, entry, pctx,
515 &quota_blocks);
516 if (problem != 0)
517 goto fix;
518
519 ea_ibody_quota->blocks += quota_blocks;
520 ea_ibody_quota->inodes++;
521 }
522
523 /* If EA value is stored in external inode then it does not
524 * consume space here */
525 if (entry->e_value_inum == 0)
526 remain -= entry->e_value_size;
527
528 entry = EXT2_EXT_ATTR_NEXT(entry);
529 }
530
531 if (region_allocate(region, (char *)entry - (char *)header,
532 sizeof(__u32))) {
533 problem = PR_1_INODE_EA_ALLOC_COLLISION;
534 goto fix;
535 }
536 fix:
537 if (region)
538 region_free(region);
539 /*
540 * it seems like a corruption. it's very unlikely we could repair
541 * EA(s) in automatic fashion -bzzz
542 */
543 if (problem == 0 || !fix_problem(ctx, problem, pctx)) {
544 inc_ea_inode_refs(ctx, pctx,
545 (struct ext2_ext_attr_entry *)start, end);
546 return;
547 }
548
549 /* simply remove all possible EA(s) */
550 *((__u32 *)header) = 0UL;
551 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
552 EXT2_INODE_SIZE(sb), "pass1");
553 ea_ibody_quota->blocks = 0;
554 ea_ibody_quota->inodes = 0;
555 }
556
557 static int check_inode_extra_negative_epoch(__u32 xtime, __u32 extra) {
558 return (xtime & (1U << 31)) != 0 &&
559 (extra & EXT4_EPOCH_MASK) == EXT4_EPOCH_MASK;
560 }
561
562 #define CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, xtime) \
563 check_inode_extra_negative_epoch(inode->i_##xtime, \
564 inode->i_##xtime##_extra)
565
566 /* When today's date is earlier than 2242, we assume that atimes,
567 * ctimes, crtimes, and mtimes with years in the range 2310..2378 are
568 * actually pre-1970 dates mis-encoded.
569 */
570 #define EXT4_EXTRA_NEGATIVE_DATE_CUTOFF 2 * (1LL << 32)
571
572 static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx,
573 struct ea_quota *ea_ibody_quota)
574 {
575 struct ext2_super_block *sb = ctx->fs->super;
576 struct ext2_inode_large *inode;
577 __u32 *eamagic;
578 int min, max;
579
580 ea_ibody_quota->blocks = 0;
581 ea_ibody_quota->inodes = 0;
582
583 inode = (struct ext2_inode_large *) pctx->inode;
584 if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) {
585 /* this isn't large inode. so, nothing to check */
586 return;
587 }
588
589 #if 0
590 printf("inode #%u, i_extra_size %d\n", pctx->ino,
591 inode->i_extra_isize);
592 #endif
593 /* i_extra_isize must cover i_extra_isize + i_checksum_hi at least */
594 min = sizeof(inode->i_extra_isize) + sizeof(inode->i_checksum_hi);
595 max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE;
596 /*
597 * For now we will allow i_extra_isize to be 0, but really
598 * implementations should never allow i_extra_isize to be 0
599 */
600 if (inode->i_extra_isize &&
601 (inode->i_extra_isize < min || inode->i_extra_isize > max ||
602 inode->i_extra_isize & 3)) {
603 if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
604 return;
605 if (inode->i_extra_isize < min || inode->i_extra_isize > max)
606 inode->i_extra_isize = sb->s_want_extra_isize;
607 else
608 inode->i_extra_isize = (inode->i_extra_isize + 3) & ~3;
609 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
610 EXT2_INODE_SIZE(sb), "pass1");
611 }
612
613 /* check if there is no place for an EA header */
614 if (inode->i_extra_isize >= max - sizeof(__u32))
615 return;
616
617 eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
618 inode->i_extra_isize);
619 if (*eamagic == EXT2_EXT_ATTR_MAGIC) {
620 /* it seems inode has an extended attribute(s) in body */
621 check_ea_in_inode(ctx, pctx, ea_ibody_quota);
622 }
623
624 /*
625 * If the inode's extended atime (ctime, crtime, mtime) is stored in
626 * the old, invalid format, repair it.
627 */
628 if (((sizeof(time_t) <= 4) ||
629 (((sizeof(time_t) > 4) &&
630 ctx->now < EXT4_EXTRA_NEGATIVE_DATE_CUTOFF))) &&
631 (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime) ||
632 CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime) ||
633 CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime) ||
634 CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))) {
635
636 if (!fix_problem(ctx, PR_1_EA_TIME_OUT_OF_RANGE, pctx))
637 return;
638
639 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime))
640 inode->i_atime_extra &= ~EXT4_EPOCH_MASK;
641 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime))
642 inode->i_ctime_extra &= ~EXT4_EPOCH_MASK;
643 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime))
644 inode->i_crtime_extra &= ~EXT4_EPOCH_MASK;
645 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))
646 inode->i_mtime_extra &= ~EXT4_EPOCH_MASK;
647 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
648 EXT2_INODE_SIZE(sb), "pass1");
649 }
650
651 }
652
653 /*
654 * Check to see if the inode might really be a directory, despite i_mode
655 *
656 * This is a lot of complexity for something for which I'm not really
657 * convinced happens frequently in the wild. If for any reason this
658 * causes any problems, take this code out.
659 * [tytso:20070331.0827EDT]
660 */
661 static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
662 char *buf)
663 {
664 struct ext2_inode *inode = pctx->inode;
665 struct ext2_dir_entry *dirent;
666 errcode_t retval;
667 blk64_t blk;
668 unsigned int i, rec_len, not_device = 0;
669 int extent_fs;
670 int inlinedata_fs;
671
672 /*
673 * If the mode looks OK, we believe it. If the first block in
674 * the i_block array is 0, this cannot be a directory. If the
675 * inode is extent-mapped, it is still the case that the latter
676 * cannot be 0 - the magic number in the extent header would make
677 * it nonzero.
678 */
679 if (LINUX_S_ISDIR(inode->i_mode) || LINUX_S_ISREG(inode->i_mode) ||
680 LINUX_S_ISLNK(inode->i_mode) || inode->i_block[0] == 0)
681 return;
682
683 /*
684 * Check the block numbers in the i_block array for validity:
685 * zero blocks are skipped (but the first one cannot be zero -
686 * see above), other blocks are checked against the first and
687 * max data blocks (from the the superblock) and against the
688 * block bitmap. Any invalid block found means this cannot be
689 * a directory.
690 *
691 * If there are non-zero blocks past the fourth entry, then
692 * this cannot be a device file: we remember that for the next
693 * check.
694 *
695 * For extent mapped files, we don't do any sanity checking:
696 * just try to get the phys block of logical block 0 and run
697 * with it.
698 *
699 * For inline data files, we just try to get the size of inline
700 * data. If it's true, we will treat it as a directory.
701 */
702
703 extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
704 inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
705 if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL)) {
706 size_t size;
707 __u32 dotdot;
708 unsigned int rec_len2;
709 struct ext2_dir_entry de;
710
711 if (ext2fs_inline_data_size(ctx->fs, pctx->ino, &size))
712 return;
713 /*
714 * If the size isn't a multiple of 4, it's probably not a
715 * directory??
716 */
717 if (size & 3)
718 return;
719 /*
720 * If the first 10 bytes don't look like a directory entry,
721 * it's probably not a directory.
722 */
723 memcpy(&dotdot, inode->i_block, sizeof(dotdot));
724 memcpy(&de, ((char *)inode->i_block) + EXT4_INLINE_DATA_DOTDOT_SIZE,
725 EXT2_DIR_REC_LEN(0));
726 dotdot = ext2fs_le32_to_cpu(dotdot);
727 de.inode = ext2fs_le32_to_cpu(de.inode);
728 de.rec_len = ext2fs_le16_to_cpu(de.rec_len);
729 ext2fs_get_rec_len(ctx->fs, &de, &rec_len2);
730 if (dotdot >= ctx->fs->super->s_inodes_count ||
731 (dotdot < EXT2_FIRST_INO(ctx->fs->super) &&
732 dotdot != EXT2_ROOT_INO) ||
733 de.inode >= ctx->fs->super->s_inodes_count ||
734 (de.inode < EXT2_FIRST_INO(ctx->fs->super) &&
735 de.inode != 0) ||
736 rec_len2 > EXT4_MIN_INLINE_DATA_SIZE -
737 EXT4_INLINE_DATA_DOTDOT_SIZE)
738 return;
739 /* device files never have a "system.data" entry */
740 goto isdir;
741 } else if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) {
742 /* extent mapped */
743 if (ext2fs_bmap2(ctx->fs, pctx->ino, inode, 0, 0, 0, 0,
744 &blk))
745 return;
746 /* device files are never extent mapped */
747 not_device++;
748 } else {
749 for (i=0; i < EXT2_N_BLOCKS; i++) {
750 blk = inode->i_block[i];
751 if (!blk)
752 continue;
753 if (i >= 4)
754 not_device++;
755
756 if (blk < ctx->fs->super->s_first_data_block ||
757 blk >= ext2fs_blocks_count(ctx->fs->super) ||
758 ext2fs_fast_test_block_bitmap2(ctx->block_found_map,
759 blk))
760 return; /* Invalid block, can't be dir */
761 }
762 blk = inode->i_block[0];
763 }
764
765 /*
766 * If the mode says this is a device file and the i_links_count field
767 * is sane and we have not ruled it out as a device file previously,
768 * we declare it a device file, not a directory.
769 */
770 if ((LINUX_S_ISCHR(inode->i_mode) || LINUX_S_ISBLK(inode->i_mode)) &&
771 (inode->i_links_count == 1) && !not_device)
772 return;
773
774 /* read the first block */
775 ehandler_operation(_("reading directory block"));
776 retval = ext2fs_read_dir_block4(ctx->fs, blk, buf, 0, pctx->ino);
777 ehandler_operation(0);
778 if (retval)
779 return;
780
781 dirent = (struct ext2_dir_entry *) buf;
782 retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
783 if (retval)
784 return;
785 if ((ext2fs_dirent_name_len(dirent) != 1) ||
786 (dirent->name[0] != '.') ||
787 (dirent->inode != pctx->ino) ||
788 (rec_len < 12) ||
789 (rec_len % 4) ||
790 (rec_len >= ctx->fs->blocksize - 12))
791 return;
792
793 dirent = (struct ext2_dir_entry *) (buf + rec_len);
794 retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
795 if (retval)
796 return;
797 if ((ext2fs_dirent_name_len(dirent) != 2) ||
798 (dirent->name[0] != '.') ||
799 (dirent->name[1] != '.') ||
800 (rec_len < 12) ||
801 (rec_len % 4))
802 return;
803
804 isdir:
805 if (fix_problem(ctx, PR_1_TREAT_AS_DIRECTORY, pctx)) {
806 inode->i_mode = (inode->i_mode & 07777) | LINUX_S_IFDIR;
807 e2fsck_write_inode_full(ctx, pctx->ino, inode,
808 EXT2_INODE_SIZE(ctx->fs->super),
809 "check_is_really_dir");
810 }
811 }
812
813 extern errcode_t e2fsck_setup_icount(e2fsck_t ctx, const char *icount_name,
814 int flags, ext2_icount_t hint,
815 ext2_icount_t *ret)
816 {
817 unsigned int threshold;
818 unsigned int save_type;
819 ext2_ino_t num_dirs;
820 errcode_t retval;
821 char *tdb_dir;
822 int enable;
823
824 *ret = 0;
825
826 profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
827 &tdb_dir);
828 profile_get_uint(ctx->profile, "scratch_files",
829 "numdirs_threshold", 0, 0, &threshold);
830 profile_get_boolean(ctx->profile, "scratch_files",
831 "icount", 0, 1, &enable);
832
833 retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
834 if (retval)
835 num_dirs = 1024; /* Guess */
836
837 if (enable && tdb_dir && !access(tdb_dir, W_OK) &&
838 (!threshold || num_dirs > threshold)) {
839 retval = ext2fs_create_icount_tdb(ctx->fs, tdb_dir,
840 flags, ret);
841 if (retval == 0)
842 return 0;
843 }
844 e2fsck_set_bitmap_type(ctx->fs, EXT2FS_BMAP64_RBTREE, icount_name,
845 &save_type);
846 if (ctx->options & E2F_OPT_ICOUNT_FULLMAP)
847 flags |= EXT2_ICOUNT_OPT_FULLMAP;
848 retval = ext2fs_create_icount2(ctx->fs, flags, 0, hint, ret);
849 ctx->fs->default_bitmap_type = save_type;
850 return retval;
851 }
852
853 static errcode_t recheck_bad_inode_checksum(ext2_filsys fs, ext2_ino_t ino,
854 e2fsck_t ctx,
855 struct problem_context *pctx)
856 {
857 errcode_t retval;
858 struct ext2_inode_large inode;
859
860 /*
861 * Reread inode. If we don't see checksum error, then this inode
862 * has been fixed elsewhere.
863 */
864 ctx->stashed_ino = 0;
865 retval = ext2fs_read_inode_full(fs, ino, (struct ext2_inode *)&inode,
866 sizeof(inode));
867 if (retval && retval != EXT2_ET_INODE_CSUM_INVALID)
868 return retval;
869 if (!retval)
870 return 0;
871
872 /*
873 * Checksum still doesn't match. That implies that the inode passes
874 * all the sanity checks, so maybe the checksum is simply corrupt.
875 * See if the user will go for fixing that.
876 */
877 if (!fix_problem(ctx, PR_1_INODE_ONLY_CSUM_INVALID, pctx))
878 return 0;
879
880 retval = ext2fs_write_inode_full(fs, ino, (struct ext2_inode *)&inode,
881 sizeof(inode));
882 return retval;
883 }
884
885 static void reserve_block_for_root_repair(e2fsck_t ctx)
886 {
887 blk64_t blk = 0;
888 errcode_t err;
889 ext2_filsys fs = ctx->fs;
890
891 ctx->root_repair_block = 0;
892 if (ext2fs_test_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO))
893 return;
894
895 err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
896 if (err)
897 return;
898 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
899 ctx->root_repair_block = blk;
900 }
901
902 static void reserve_block_for_lnf_repair(e2fsck_t ctx)
903 {
904 blk64_t blk = 0;
905 errcode_t err;
906 ext2_filsys fs = ctx->fs;
907 static const char name[] = "lost+found";
908 ext2_ino_t ino;
909
910 ctx->lnf_repair_block = 0;
911 if (!ext2fs_lookup(fs, EXT2_ROOT_INO, name, sizeof(name)-1, 0, &ino))
912 return;
913
914 err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
915 if (err)
916 return;
917 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
918 ctx->lnf_repair_block = blk;
919 }
920
921 static errcode_t get_inline_data_ea_size(ext2_filsys fs, ext2_ino_t ino,
922 size_t *sz)
923 {
924 void *p;
925 struct ext2_xattr_handle *handle;
926 errcode_t retval;
927
928 retval = ext2fs_xattrs_open(fs, ino, &handle);
929 if (retval)
930 return retval;
931
932 retval = ext2fs_xattrs_read(handle);
933 if (retval)
934 goto err;
935
936 retval = ext2fs_xattr_get(handle, "system.data", &p, sz);
937 if (retval)
938 goto err;
939 ext2fs_free_mem(&p);
940 err:
941 (void) ext2fs_xattrs_close(&handle);
942 return retval;
943 }
944
945 static void finish_processing_inode(e2fsck_t ctx, ext2_ino_t ino,
946 struct problem_context *pctx,
947 int failed_csum)
948 {
949 if (!failed_csum)
950 return;
951
952 /*
953 * If the inode failed the checksum and the user didn't
954 * clear the inode, test the checksum again -- if it still
955 * fails, ask the user if the checksum should be corrected.
956 */
957 pctx->errcode = recheck_bad_inode_checksum(ctx->fs, ino, ctx, pctx);
958 if (pctx->errcode)
959 ctx->flags |= E2F_FLAG_ABORT;
960 }
961 #define FINISH_INODE_LOOP(ctx, ino, pctx, failed_csum) \
962 do { \
963 finish_processing_inode((ctx), (ino), (pctx), (failed_csum)); \
964 if ((ctx)->flags & E2F_FLAG_ABORT) \
965 return; \
966 } while (0)
967
968 static int could_be_block_map(ext2_filsys fs, struct ext2_inode *inode)
969 {
970 __u32 x;
971 int i;
972
973 for (i = 0; i < EXT2_N_BLOCKS; i++) {
974 x = inode->i_block[i];
975 #ifdef WORDS_BIGENDIAN
976 x = ext2fs_swab32(x);
977 #endif
978 if (x >= ext2fs_blocks_count(fs->super))
979 return 0;
980 }
981
982 return 1;
983 }
984
985 /*
986 * Figure out what to do with an inode that has both extents and inline data
987 * inode flags set. Returns -1 if we decide to erase the inode, 0 otherwise.
988 */
989 static int fix_inline_data_extents_file(e2fsck_t ctx,
990 ext2_ino_t ino,
991 struct ext2_inode *inode,
992 int inode_size,
993 struct problem_context *pctx)
994 {
995 size_t max_inline_ea_size;
996 ext2_filsys fs = ctx->fs;
997 int dirty = 0;
998
999 /* Both feature flags not set? Just run the regular checks */
1000 if (!ext2fs_has_feature_extents(fs->super) &&
1001 !ext2fs_has_feature_inline_data(fs->super))
1002 return 0;
1003
1004 /* Clear both flags if it's a special file */
1005 if (LINUX_S_ISCHR(inode->i_mode) ||
1006 LINUX_S_ISBLK(inode->i_mode) ||
1007 LINUX_S_ISFIFO(inode->i_mode) ||
1008 LINUX_S_ISSOCK(inode->i_mode)) {
1009 check_extents_inlinedata(ctx, pctx);
1010 return 0;
1011 }
1012
1013 /* If it looks like an extent tree, try to clear inlinedata */
1014 if (ext2fs_extent_header_verify(inode->i_block,
1015 sizeof(inode->i_block)) == 0 &&
1016 fix_problem(ctx, PR_1_CLEAR_INLINE_DATA_FOR_EXTENT, pctx)) {
1017 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1018 dirty = 1;
1019 goto out;
1020 }
1021
1022 /* If it looks short enough to be inline data, try to clear extents */
1023 if (inode_size > EXT2_GOOD_OLD_INODE_SIZE)
1024 max_inline_ea_size = inode_size -
1025 (EXT2_GOOD_OLD_INODE_SIZE +
1026 ((struct ext2_inode_large *)inode)->i_extra_isize);
1027 else
1028 max_inline_ea_size = 0;
1029 if (EXT2_I_SIZE(inode) <
1030 EXT4_MIN_INLINE_DATA_SIZE + max_inline_ea_size &&
1031 fix_problem(ctx, PR_1_CLEAR_EXTENT_FOR_INLINE_DATA, pctx)) {
1032 inode->i_flags &= ~EXT4_EXTENTS_FL;
1033 dirty = 1;
1034 goto out;
1035 }
1036
1037 /*
1038 * Too big for inline data, but no evidence of extent tree -
1039 * maybe it's a block map file? If the mappings all look valid?
1040 */
1041 if (could_be_block_map(fs, inode) &&
1042 fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_FLAGS, pctx)) {
1043 #ifdef WORDS_BIGENDIAN
1044 int i;
1045
1046 for (i = 0; i < EXT2_N_BLOCKS; i++)
1047 inode->i_block[i] = ext2fs_swab32(inode->i_block[i]);
1048 #endif
1049
1050 inode->i_flags &= ~(EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL);
1051 dirty = 1;
1052 goto out;
1053 }
1054
1055 /* Oh well, just clear the busted inode. */
1056 if (fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_INODE, pctx)) {
1057 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1058 return -1;
1059 }
1060
1061 out:
1062 if (dirty)
1063 e2fsck_write_inode(ctx, ino, inode, "pass1");
1064
1065 return 0;
1066 }
1067
1068 static void pass1_readahead(e2fsck_t ctx, dgrp_t *group, ext2_ino_t *next_ino)
1069 {
1070 ext2_ino_t inodes_in_group = 0, inodes_per_block, inodes_per_buffer;
1071 dgrp_t start = *group, grp;
1072 blk64_t blocks_to_read = 0;
1073 errcode_t err = EXT2_ET_INVALID_ARGUMENT;
1074
1075 if (ctx->readahead_kb == 0)
1076 goto out;
1077
1078 /* Keep iterating groups until we have enough to readahead */
1079 inodes_per_block = EXT2_INODES_PER_BLOCK(ctx->fs->super);
1080 for (grp = start; grp < ctx->fs->group_desc_count; grp++) {
1081 if (ext2fs_bg_flags_test(ctx->fs, grp, EXT2_BG_INODE_UNINIT))
1082 continue;
1083 inodes_in_group = ctx->fs->super->s_inodes_per_group -
1084 ext2fs_bg_itable_unused(ctx->fs, grp);
1085 blocks_to_read += (inodes_in_group + inodes_per_block - 1) /
1086 inodes_per_block;
1087 if (blocks_to_read * ctx->fs->blocksize >
1088 ctx->readahead_kb * 1024)
1089 break;
1090 }
1091
1092 err = e2fsck_readahead(ctx->fs, E2FSCK_READA_ITABLE, start,
1093 grp - start + 1);
1094 if (err == EAGAIN) {
1095 ctx->readahead_kb /= 2;
1096 err = 0;
1097 }
1098
1099 out:
1100 if (err) {
1101 /* Error; disable itable readahead */
1102 *group = ctx->fs->group_desc_count;
1103 *next_ino = ctx->fs->super->s_inodes_count;
1104 } else {
1105 /*
1106 * Don't do more readahead until we've reached the first inode
1107 * of the last inode scan buffer block for the last group.
1108 */
1109 *group = grp + 1;
1110 inodes_per_buffer = (ctx->inode_buffer_blocks ?
1111 ctx->inode_buffer_blocks :
1112 EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS) *
1113 ctx->fs->blocksize /
1114 EXT2_INODE_SIZE(ctx->fs->super);
1115 inodes_in_group--;
1116 *next_ino = inodes_in_group -
1117 (inodes_in_group % inodes_per_buffer) + 1 +
1118 (grp * ctx->fs->super->s_inodes_per_group);
1119 }
1120 }
1121
1122 /*
1123 * Check if the passed ino is one of the used superblock quota inodes.
1124 *
1125 * Before the quota inodes were journaled, older superblock quota inodes
1126 * were just regular files in the filesystem and not reserved inodes. This
1127 * checks if the passed ino is one of the s_*_quota_inum superblock fields,
1128 * which may not always be the same as the EXT4_*_QUOTA_INO fields.
1129 */
1130 static int quota_inum_is_super(struct ext2_super_block *sb, ext2_ino_t ino)
1131 {
1132 enum quota_type qtype;
1133
1134 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1135 if (*quota_sb_inump(sb, qtype) == ino)
1136 return 1;
1137
1138 return 0;
1139 }
1140
1141 /*
1142 * Check if the passed ino is one of the reserved quota inodes.
1143 * This checks if the inode number is one of the reserved EXT4_*_QUOTA_INO
1144 * inodes. These inodes may or may not be in use by the quota feature.
1145 */
1146 static int quota_inum_is_reserved(ext2_filsys fs, ext2_ino_t ino)
1147 {
1148 enum quota_type qtype;
1149
1150 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1151 if (quota_type2inum(qtype, fs->super) == ino)
1152 return 1;
1153
1154 return 0;
1155 }
1156
1157 void e2fsck_pass1(e2fsck_t ctx)
1158 {
1159 int i;
1160 __u64 max_sizes;
1161 ext2_filsys fs = ctx->fs;
1162 ext2_ino_t ino = 0;
1163 struct ext2_inode *inode = NULL;
1164 ext2_inode_scan scan = NULL;
1165 char *block_buf = NULL;
1166 #ifdef RESOURCE_TRACK
1167 struct resource_track rtrack;
1168 #endif
1169 unsigned char frag, fsize;
1170 struct problem_context pctx;
1171 struct scan_callback_struct scan_struct;
1172 struct ext2_super_block *sb = ctx->fs->super;
1173 const char *old_op;
1174 int imagic_fs, extent_fs, inlinedata_fs;
1175 int low_dtime_check = 1;
1176 unsigned int inode_size = EXT2_INODE_SIZE(fs->super);
1177 unsigned int bufsize;
1178 int failed_csum = 0;
1179 ext2_ino_t ino_threshold = 0;
1180 dgrp_t ra_group = 0;
1181 struct ea_quota ea_ibody_quota;
1182
1183 init_resource_track(&rtrack, ctx->fs->io);
1184 clear_problem_context(&pctx);
1185
1186 /* If we can do readahead, figure out how many groups to pull in. */
1187 if (!e2fsck_can_readahead(ctx->fs))
1188 ctx->readahead_kb = 0;
1189 else if (ctx->readahead_kb == ~0ULL)
1190 ctx->readahead_kb = e2fsck_guess_readahead(ctx->fs);
1191 pass1_readahead(ctx, &ra_group, &ino_threshold);
1192
1193 if (!(ctx->options & E2F_OPT_PREEN))
1194 fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
1195
1196 if (ext2fs_has_feature_dir_index(fs->super) &&
1197 !(ctx->options & E2F_OPT_NO)) {
1198 if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
1199 ctx->dirs_to_hash = 0;
1200 }
1201
1202 #ifdef MTRACE
1203 mtrace_print("Pass 1");
1204 #endif
1205
1206 #define EXT2_BPP(bits) (1ULL << ((bits) - 2))
1207
1208 for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
1209 max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
1210 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
1211 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
1212 max_sizes = (max_sizes * (1UL << i));
1213 ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
1214 }
1215 #undef EXT2_BPP
1216
1217 imagic_fs = ext2fs_has_feature_imagic_inodes(sb);
1218 extent_fs = ext2fs_has_feature_extents(sb);
1219 inlinedata_fs = ext2fs_has_feature_inline_data(sb);
1220
1221 /*
1222 * Allocate bitmaps structures
1223 */
1224 pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("in-use inode map"),
1225 EXT2FS_BMAP64_RBTREE,
1226 "inode_used_map",
1227 &ctx->inode_used_map);
1228 if (pctx.errcode) {
1229 pctx.num = 1;
1230 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1231 ctx->flags |= E2F_FLAG_ABORT;
1232 return;
1233 }
1234 pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1235 _("directory inode map"),
1236 EXT2FS_BMAP64_AUTODIR,
1237 "inode_dir_map", &ctx->inode_dir_map);
1238 if (pctx.errcode) {
1239 pctx.num = 2;
1240 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1241 ctx->flags |= E2F_FLAG_ABORT;
1242 return;
1243 }
1244 pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1245 _("regular file inode map"), EXT2FS_BMAP64_RBTREE,
1246 "inode_reg_map", &ctx->inode_reg_map);
1247 if (pctx.errcode) {
1248 pctx.num = 6;
1249 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1250 ctx->flags |= E2F_FLAG_ABORT;
1251 return;
1252 }
1253 pctx.errcode = e2fsck_allocate_subcluster_bitmap(fs,
1254 _("in-use block map"), EXT2FS_BMAP64_RBTREE,
1255 "block_found_map", &ctx->block_found_map);
1256 if (pctx.errcode) {
1257 pctx.num = 1;
1258 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1259 ctx->flags |= E2F_FLAG_ABORT;
1260 return;
1261 }
1262 pctx.errcode = e2fsck_allocate_block_bitmap(fs,
1263 _("metadata block map"), EXT2FS_BMAP64_RBTREE,
1264 "block_metadata_map", &ctx->block_metadata_map);
1265 if (pctx.errcode) {
1266 pctx.num = 1;
1267 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1268 ctx->flags |= E2F_FLAG_ABORT;
1269 return;
1270 }
1271 pctx.errcode = e2fsck_setup_icount(ctx, "inode_link_info", 0, NULL,
1272 &ctx->inode_link_info);
1273 if (pctx.errcode) {
1274 fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
1275 ctx->flags |= E2F_FLAG_ABORT;
1276 return;
1277 }
1278 bufsize = inode_size;
1279 if (bufsize < sizeof(struct ext2_inode_large))
1280 bufsize = sizeof(struct ext2_inode_large);
1281 inode = (struct ext2_inode *)
1282 e2fsck_allocate_memory(ctx, bufsize, "scratch inode");
1283
1284 inodes_to_process = (struct process_inode_block *)
1285 e2fsck_allocate_memory(ctx,
1286 (ctx->process_inode_size *
1287 sizeof(struct process_inode_block)),
1288 "array of inodes to process");
1289 process_inode_count = 0;
1290
1291 pctx.errcode = ext2fs_init_dblist(fs, 0);
1292 if (pctx.errcode) {
1293 fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
1294 ctx->flags |= E2F_FLAG_ABORT;
1295 goto endit;
1296 }
1297
1298 /*
1299 * If the last orphan field is set, clear it, since the pass1
1300 * processing will automatically find and clear the orphans.
1301 * In the future, we may want to try using the last_orphan
1302 * linked list ourselves, but for now, we clear it so that the
1303 * ext3 mount code won't get confused.
1304 */
1305 if (!(ctx->options & E2F_OPT_READONLY)) {
1306 if (fs->super->s_last_orphan) {
1307 fs->super->s_last_orphan = 0;
1308 ext2fs_mark_super_dirty(fs);
1309 }
1310 }
1311
1312 mark_table_blocks(ctx);
1313 pctx.errcode = ext2fs_convert_subcluster_bitmap(fs,
1314 &ctx->block_found_map);
1315 if (pctx.errcode) {
1316 fix_problem(ctx, PR_1_CONVERT_SUBCLUSTER, &pctx);
1317 ctx->flags |= E2F_FLAG_ABORT;
1318 goto endit;
1319 }
1320 block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
1321 "block interate buffer");
1322 if (EXT2_INODE_SIZE(fs->super) == EXT2_GOOD_OLD_INODE_SIZE)
1323 e2fsck_use_inode_shortcuts(ctx, 1);
1324 e2fsck_intercept_block_allocations(ctx);
1325 old_op = ehandler_operation(_("opening inode scan"));
1326 pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
1327 &scan);
1328 ehandler_operation(old_op);
1329 if (pctx.errcode) {
1330 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1331 ctx->flags |= E2F_FLAG_ABORT;
1332 goto endit;
1333 }
1334 ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE |
1335 EXT2_SF_WARN_GARBAGE_INODES, 0);
1336 ctx->stashed_inode = inode;
1337 scan_struct.ctx = ctx;
1338 scan_struct.block_buf = block_buf;
1339 ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
1340 if (ctx->progress && ((ctx->progress)(ctx, 1, 0,
1341 ctx->fs->group_desc_count)))
1342 goto endit;
1343 if ((fs->super->s_wtime &&
1344 fs->super->s_wtime < fs->super->s_inodes_count) ||
1345 (fs->super->s_mtime &&
1346 fs->super->s_mtime < fs->super->s_inodes_count) ||
1347 (fs->super->s_mkfs_time &&
1348 fs->super->s_mkfs_time < fs->super->s_inodes_count))
1349 low_dtime_check = 0;
1350
1351 if (ext2fs_has_feature_mmp(fs->super) &&
1352 fs->super->s_mmp_block > fs->super->s_first_data_block &&
1353 fs->super->s_mmp_block < ext2fs_blocks_count(fs->super))
1354 ext2fs_mark_block_bitmap2(ctx->block_found_map,
1355 fs->super->s_mmp_block);
1356
1357 /* Set up ctx->lost_and_found if possible */
1358 (void) e2fsck_get_lost_and_found(ctx, 0);
1359
1360 while (1) {
1361 if (ino % (fs->super->s_inodes_per_group * 4) == 1) {
1362 if (e2fsck_mmp_update(fs))
1363 fatal_error(ctx, 0);
1364 }
1365 old_op = ehandler_operation(_("getting next inode from scan"));
1366 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
1367 inode, inode_size);
1368 if (ino > ino_threshold)
1369 pass1_readahead(ctx, &ra_group, &ino_threshold);
1370 ehandler_operation(old_op);
1371 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1372 goto endit;
1373 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
1374 /*
1375 * If badblocks says badblocks is bad, offer to clear
1376 * the list, update the in-core bb list, and restart
1377 * the inode scan.
1378 */
1379 if (ino == EXT2_BAD_INO &&
1380 fix_problem(ctx, PR_1_BADBLOCKS_IN_BADBLOCKS,
1381 &pctx)) {
1382 errcode_t err;
1383
1384 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1385 ext2fs_badblocks_list_free(ctx->fs->badblocks);
1386 ctx->fs->badblocks = NULL;
1387 err = ext2fs_read_bb_inode(ctx->fs,
1388 &ctx->fs->badblocks);
1389 if (err) {
1390 fix_problem(ctx, PR_1_ISCAN_ERROR,
1391 &pctx);
1392 ctx->flags |= E2F_FLAG_ABORT;
1393 goto endit;
1394 }
1395 err = ext2fs_inode_scan_goto_blockgroup(scan,
1396 0);
1397 if (err) {
1398 fix_problem(ctx, PR_1_ISCAN_ERROR,
1399 &pctx);
1400 ctx->flags |= E2F_FLAG_ABORT;
1401 goto endit;
1402 }
1403 continue;
1404 }
1405 if (!ctx->inode_bb_map)
1406 alloc_bb_map(ctx);
1407 ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino);
1408 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1409 continue;
1410 }
1411 if (pctx.errcode &&
1412 pctx.errcode != EXT2_ET_INODE_CSUM_INVALID &&
1413 pctx.errcode != EXT2_ET_INODE_IS_GARBAGE) {
1414 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1415 ctx->flags |= E2F_FLAG_ABORT;
1416 goto endit;
1417 }
1418 if (!ino)
1419 break;
1420 pctx.ino = ino;
1421 pctx.inode = inode;
1422 ctx->stashed_ino = ino;
1423
1424 /* Clear trashed inode? */
1425 if (pctx.errcode == EXT2_ET_INODE_IS_GARBAGE &&
1426 inode->i_links_count > 0 &&
1427 fix_problem(ctx, PR_1_INODE_IS_GARBAGE, &pctx)) {
1428 pctx.errcode = 0;
1429 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1430 }
1431 failed_csum = pctx.errcode != 0;
1432
1433 /*
1434 * Check for inodes who might have been part of the
1435 * orphaned list linked list. They should have gotten
1436 * dealt with by now, unless the list had somehow been
1437 * corrupted.
1438 *
1439 * FIXME: In the future, inodes which are still in use
1440 * (and which are therefore) pending truncation should
1441 * be handled specially. Right now we just clear the
1442 * dtime field, and the normal e2fsck handling of
1443 * inodes where i_size and the inode blocks are
1444 * inconsistent is to fix i_size, instead of releasing
1445 * the extra blocks. This won't catch the inodes that
1446 * was at the end of the orphan list, but it's better
1447 * than nothing. The right answer is that there
1448 * shouldn't be any bugs in the orphan list handling. :-)
1449 */
1450 if (inode->i_dtime && low_dtime_check &&
1451 inode->i_dtime < ctx->fs->super->s_inodes_count) {
1452 if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
1453 inode->i_dtime = inode->i_links_count ?
1454 0 : ctx->now;
1455 e2fsck_write_inode(ctx, ino, inode,
1456 "pass1");
1457 failed_csum = 0;
1458 }
1459 }
1460
1461 if (inode->i_links_count) {
1462 pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
1463 ino, inode->i_links_count);
1464 if (pctx.errcode) {
1465 pctx.num = inode->i_links_count;
1466 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
1467 ctx->flags |= E2F_FLAG_ABORT;
1468 goto endit;
1469 }
1470 } else if ((ino >= EXT2_FIRST_INODE(fs->super)) &&
1471 !quota_inum_is_reserved(fs, ino)) {
1472 if (!inode->i_dtime && inode->i_mode) {
1473 if (fix_problem(ctx,
1474 PR_1_ZERO_DTIME, &pctx)) {
1475 inode->i_dtime = ctx->now;
1476 e2fsck_write_inode(ctx, ino, inode,
1477 "pass1");
1478 failed_csum = 0;
1479 }
1480 }
1481 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1482 continue;
1483 }
1484
1485 /* Conflicting inlinedata/extents inode flags? */
1486 if ((inode->i_flags & EXT4_INLINE_DATA_FL) &&
1487 (inode->i_flags & EXT4_EXTENTS_FL)) {
1488 int res = fix_inline_data_extents_file(ctx, ino, inode,
1489 inode_size,
1490 &pctx);
1491 if (res < 0) {
1492 /* skip FINISH_INODE_LOOP */
1493 continue;
1494 }
1495 }
1496
1497 /* Test for incorrect inline_data flags settings. */
1498 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && !inlinedata_fs &&
1499 (ino >= EXT2_FIRST_INODE(fs->super))) {
1500 size_t size = 0;
1501
1502 pctx.errcode = get_inline_data_ea_size(fs, ino, &size);
1503 if (!pctx.errcode &&
1504 fix_problem(ctx, PR_1_INLINE_DATA_FEATURE, &pctx)) {
1505 ext2fs_set_feature_inline_data(sb);
1506 ext2fs_mark_super_dirty(fs);
1507 inlinedata_fs = 1;
1508 } else if (fix_problem(ctx, PR_1_INLINE_DATA_SET, &pctx)) {
1509 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1510 /* skip FINISH_INODE_LOOP */
1511 continue;
1512 }
1513 }
1514
1515 /* Test for inline data flag but no attr */
1516 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && inlinedata_fs &&
1517 (ino >= EXT2_FIRST_INODE(fs->super))) {
1518 size_t size = 0;
1519 errcode_t err;
1520 int flags;
1521
1522 flags = fs->flags;
1523 if (failed_csum)
1524 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
1525 err = get_inline_data_ea_size(fs, ino, &size);
1526 fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
1527 (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
1528
1529 switch (err) {
1530 case 0:
1531 /* Everything is awesome... */
1532 break;
1533 case EXT2_ET_BAD_EA_BLOCK_NUM:
1534 case EXT2_ET_BAD_EA_HASH:
1535 case EXT2_ET_BAD_EA_HEADER:
1536 case EXT2_ET_EA_BAD_NAME_LEN:
1537 case EXT2_ET_EA_BAD_VALUE_SIZE:
1538 case EXT2_ET_EA_KEY_NOT_FOUND:
1539 case EXT2_ET_EA_NO_SPACE:
1540 case EXT2_ET_MISSING_EA_FEATURE:
1541 case EXT2_ET_INLINE_DATA_CANT_ITERATE:
1542 case EXT2_ET_INLINE_DATA_NO_BLOCK:
1543 case EXT2_ET_INLINE_DATA_NO_SPACE:
1544 case EXT2_ET_NO_INLINE_DATA:
1545 case EXT2_ET_EXT_ATTR_CSUM_INVALID:
1546 case EXT2_ET_EA_BAD_VALUE_OFFSET:
1547 case EXT2_ET_EA_INODE_CORRUPTED:
1548 /* broken EA or no system.data EA; truncate */
1549 if (fix_problem(ctx, PR_1_INLINE_DATA_NO_ATTR,
1550 &pctx)) {
1551 err = ext2fs_inode_size_set(fs, inode, 0);
1552 if (err) {
1553 pctx.errcode = err;
1554 ctx->flags |= E2F_FLAG_ABORT;
1555 goto endit;
1556 }
1557 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1558 memset(&inode->i_block, 0,
1559 sizeof(inode->i_block));
1560 e2fsck_write_inode(ctx, ino, inode,
1561 "pass1");
1562 failed_csum = 0;
1563 }
1564 break;
1565 default:
1566 /* Some other kind of non-xattr error? */
1567 pctx.errcode = err;
1568 ctx->flags |= E2F_FLAG_ABORT;
1569 goto endit;
1570 }
1571 }
1572
1573 /*
1574 * Test for incorrect extent flag settings.
1575 *
1576 * On big-endian machines we must be careful:
1577 * When the inode is read, the i_block array is not swapped
1578 * if the extent flag is set. Therefore if we are testing
1579 * for or fixing a wrongly-set flag, we must potentially
1580 * (un)swap before testing, or after fixing.
1581 */
1582
1583 /*
1584 * In this case the extents flag was set when read, so
1585 * extent_header_verify is ok. If the inode is cleared,
1586 * no need to swap... so no extra swapping here.
1587 */
1588 if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs &&
1589 (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1590 (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) {
1591 if ((ext2fs_extent_header_verify(inode->i_block,
1592 sizeof(inode->i_block)) == 0) &&
1593 fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) {
1594 ext2fs_set_feature_extents(sb);
1595 ext2fs_mark_super_dirty(fs);
1596 extent_fs = 1;
1597 } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) {
1598 clear_inode:
1599 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1600 if (ino == EXT2_BAD_INO)
1601 ext2fs_mark_inode_bitmap2(ctx->inode_used_map,
1602 ino);
1603 /* skip FINISH_INODE_LOOP */
1604 continue;
1605 }
1606 }
1607
1608 /*
1609 * For big-endian machines:
1610 * If the inode didn't have the extents flag set when it
1611 * was read, then the i_blocks array was swapped. To test
1612 * as an extents header, we must swap it back first.
1613 * IF we then set the extents flag, the entire i_block
1614 * array must be un/re-swapped to make it proper extents data.
1615 */
1616 if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) &&
1617 (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1618 (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) &&
1619 (LINUX_S_ISREG(inode->i_mode) ||
1620 LINUX_S_ISDIR(inode->i_mode))) {
1621 void *ehp;
1622 #ifdef WORDS_BIGENDIAN
1623 __u32 tmp_block[EXT2_N_BLOCKS];
1624
1625 for (i = 0; i < EXT2_N_BLOCKS; i++)
1626 tmp_block[i] = ext2fs_swab32(inode->i_block[i]);
1627 ehp = tmp_block;
1628 #else
1629 ehp = inode->i_block;
1630 #endif
1631 if ((ext2fs_extent_header_verify(ehp,
1632 sizeof(inode->i_block)) == 0) &&
1633 (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) {
1634 inode->i_flags |= EXT4_EXTENTS_FL;
1635 #ifdef WORDS_BIGENDIAN
1636 memcpy(inode->i_block, tmp_block,
1637 sizeof(inode->i_block));
1638 #endif
1639 e2fsck_write_inode(ctx, ino, inode, "pass1");
1640 failed_csum = 0;
1641 }
1642 }
1643
1644 if (ino == EXT2_BAD_INO) {
1645 struct process_block_struct pb;
1646
1647 if ((failed_csum || inode->i_mode || inode->i_uid ||
1648 inode->i_gid || inode->i_links_count ||
1649 (inode->i_flags & EXT4_INLINE_DATA_FL) ||
1650 inode->i_file_acl) &&
1651 fix_problem(ctx, PR_1_INVALID_BAD_INODE, &pctx)) {
1652 memset(inode, 0, sizeof(struct ext2_inode));
1653 e2fsck_write_inode(ctx, ino, inode,
1654 "clear bad inode");
1655 failed_csum = 0;
1656 }
1657
1658 pctx.errcode = ext2fs_copy_bitmap(ctx->block_found_map,
1659 &pb.fs_meta_blocks);
1660 if (pctx.errcode) {
1661 pctx.num = 4;
1662 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1663 ctx->flags |= E2F_FLAG_ABORT;
1664 goto endit;
1665 }
1666 pb.ino = EXT2_BAD_INO;
1667 pb.num_blocks = pb.last_block = 0;
1668 pb.last_db_block = -1;
1669 pb.num_illegal_blocks = 0;
1670 pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
1671 pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
1672 pb.inode = inode;
1673 pb.pctx = &pctx;
1674 pb.ctx = ctx;
1675 pctx.errcode = ext2fs_block_iterate3(fs, ino, 0,
1676 block_buf, process_bad_block, &pb);
1677 ext2fs_free_block_bitmap(pb.fs_meta_blocks);
1678 if (pctx.errcode) {
1679 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
1680 ctx->flags |= E2F_FLAG_ABORT;
1681 goto endit;
1682 }
1683 if (pb.bbcheck)
1684 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
1685 ctx->flags |= E2F_FLAG_ABORT;
1686 goto endit;
1687 }
1688 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1689 clear_problem_context(&pctx);
1690 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1691 continue;
1692 } else if (ino == EXT2_ROOT_INO) {
1693 /*
1694 * Make sure the root inode is a directory; if
1695 * not, offer to clear it. It will be
1696 * regenerated in pass #3.
1697 */
1698 if (!LINUX_S_ISDIR(inode->i_mode)) {
1699 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx))
1700 goto clear_inode;
1701 }
1702 /*
1703 * If dtime is set, offer to clear it. mke2fs
1704 * version 0.2b created filesystems with the
1705 * dtime field set for the root and lost+found
1706 * directories. We won't worry about
1707 * /lost+found, since that can be regenerated
1708 * easily. But we will fix the root directory
1709 * as a special case.
1710 */
1711 if (inode->i_dtime && inode->i_links_count) {
1712 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
1713 inode->i_dtime = 0;
1714 e2fsck_write_inode(ctx, ino, inode,
1715 "pass1");
1716 failed_csum = 0;
1717 }
1718 }
1719 } else if (ino == EXT2_JOURNAL_INO) {
1720 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1721 if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
1722 if (!LINUX_S_ISREG(inode->i_mode) &&
1723 fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
1724 &pctx)) {
1725 inode->i_mode = LINUX_S_IFREG;
1726 e2fsck_write_inode(ctx, ino, inode,
1727 "pass1");
1728 failed_csum = 0;
1729 }
1730 check_blocks(ctx, &pctx, block_buf, NULL);
1731 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1732 continue;
1733 }
1734 if ((inode->i_links_count ||
1735 inode->i_blocks || inode->i_block[0]) &&
1736 fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
1737 &pctx)) {
1738 memset(inode, 0, inode_size);
1739 ext2fs_icount_store(ctx->inode_link_info,
1740 ino, 0);
1741 e2fsck_write_inode_full(ctx, ino, inode,
1742 inode_size, "pass1");
1743 failed_csum = 0;
1744 }
1745 } else if (quota_inum_is_reserved(fs, ino)) {
1746 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1747 if (ext2fs_has_feature_quota(fs->super) &&
1748 quota_inum_is_super(fs->super, ino)) {
1749 if (!LINUX_S_ISREG(inode->i_mode) &&
1750 fix_problem(ctx, PR_1_QUOTA_BAD_MODE,
1751 &pctx)) {
1752 inode->i_mode = LINUX_S_IFREG;
1753 e2fsck_write_inode(ctx, ino, inode,
1754 "pass1");
1755 failed_csum = 0;
1756 }
1757 check_blocks(ctx, &pctx, block_buf, NULL);
1758 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1759 continue;
1760 }
1761 if ((inode->i_links_count ||
1762 inode->i_blocks || inode->i_block[0]) &&
1763 fix_problem(ctx, PR_1_QUOTA_INODE_NOT_CLEAR,
1764 &pctx)) {
1765 memset(inode, 0, inode_size);
1766 ext2fs_icount_store(ctx->inode_link_info,
1767 ino, 0);
1768 e2fsck_write_inode_full(ctx, ino, inode,
1769 inode_size, "pass1");
1770 failed_csum = 0;
1771 }
1772 } else if (ino < EXT2_FIRST_INODE(fs->super)) {
1773 problem_t problem = 0;
1774
1775 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1776 if (ino == EXT2_BOOT_LOADER_INO) {
1777 if (LINUX_S_ISDIR(inode->i_mode))
1778 problem = PR_1_RESERVED_BAD_MODE;
1779 } else if (ino == EXT2_RESIZE_INO) {
1780 if (inode->i_mode &&
1781 !LINUX_S_ISREG(inode->i_mode))
1782 problem = PR_1_RESERVED_BAD_MODE;
1783 } else {
1784 if (inode->i_mode != 0)
1785 problem = PR_1_RESERVED_BAD_MODE;
1786 }
1787 if (problem) {
1788 if (fix_problem(ctx, problem, &pctx)) {
1789 inode->i_mode = 0;
1790 e2fsck_write_inode(ctx, ino, inode,
1791 "pass1");
1792 failed_csum = 0;
1793 }
1794 }
1795 check_blocks(ctx, &pctx, block_buf, NULL);
1796 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1797 continue;
1798 }
1799
1800 if (!inode->i_links_count) {
1801 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1802 continue;
1803 }
1804 /*
1805 * n.b. 0.3c ext2fs code didn't clear i_links_count for
1806 * deleted files. Oops.
1807 *
1808 * Since all new ext2 implementations get this right,
1809 * we now assume that the case of non-zero
1810 * i_links_count and non-zero dtime means that we
1811 * should keep the file, not delete it.
1812 *
1813 */
1814 if (inode->i_dtime) {
1815 if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
1816 inode->i_dtime = 0;
1817 e2fsck_write_inode(ctx, ino, inode, "pass1");
1818 failed_csum = 0;
1819 }
1820 }
1821
1822 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1823 switch (fs->super->s_creator_os) {
1824 case EXT2_OS_HURD:
1825 frag = inode->osd2.hurd2.h_i_frag;
1826 fsize = inode->osd2.hurd2.h_i_fsize;
1827 break;
1828 default:
1829 frag = fsize = 0;
1830 }
1831
1832 if (inode->i_faddr || frag || fsize ||
1833 (!ext2fs_has_feature_largedir(fs->super) &&
1834 (LINUX_S_ISDIR(inode->i_mode) && inode->i_size_high)))
1835 mark_inode_bad(ctx, ino);
1836 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
1837 !ext2fs_has_feature_64bit(fs->super) &&
1838 inode->osd2.linux2.l_i_file_acl_high != 0)
1839 mark_inode_bad(ctx, ino);
1840 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
1841 !ext2fs_has_feature_huge_file(fs->super) &&
1842 (inode->osd2.linux2.l_i_blocks_hi != 0))
1843 mark_inode_bad(ctx, ino);
1844 if (inode->i_flags & EXT2_IMAGIC_FL) {
1845 if (imagic_fs) {
1846 if (!ctx->inode_imagic_map)
1847 alloc_imagic_map(ctx);
1848 ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map,
1849 ino);
1850 } else {
1851 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
1852 inode->i_flags &= ~EXT2_IMAGIC_FL;
1853 e2fsck_write_inode(ctx, ino,
1854 inode, "pass1");
1855 failed_csum = 0;
1856 }
1857 }
1858 }
1859
1860 check_inode_extra_space(ctx, &pctx, &ea_ibody_quota);
1861 check_is_really_dir(ctx, &pctx, block_buf);
1862
1863 /*
1864 * ext2fs_inode_has_valid_blocks2 does not actually look
1865 * at i_block[] values, so not endian-sensitive here.
1866 */
1867 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) &&
1868 LINUX_S_ISLNK(inode->i_mode) &&
1869 !ext2fs_inode_has_valid_blocks2(fs, inode) &&
1870 fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) {
1871 inode->i_flags &= ~EXT4_EXTENTS_FL;
1872 e2fsck_write_inode(ctx, ino, inode, "pass1");
1873 failed_csum = 0;
1874 }
1875
1876 if (LINUX_S_ISDIR(inode->i_mode)) {
1877 ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
1878 e2fsck_add_dir_info(ctx, ino, 0);
1879 ctx->fs_directory_count++;
1880 if (inode->i_flags & EXT4_ENCRYPT_FL)
1881 add_encrypted_dir(ctx, ino);
1882 } else if (LINUX_S_ISREG (inode->i_mode)) {
1883 ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino);
1884 ctx->fs_regular_count++;
1885 } else if (LINUX_S_ISCHR (inode->i_mode) &&
1886 e2fsck_pass1_check_device_inode(fs, inode)) {
1887 check_extents_inlinedata(ctx, &pctx);
1888 check_immutable(ctx, &pctx);
1889 check_size(ctx, &pctx);
1890 ctx->fs_chardev_count++;
1891 } else if (LINUX_S_ISBLK (inode->i_mode) &&
1892 e2fsck_pass1_check_device_inode(fs, inode)) {
1893 check_extents_inlinedata(ctx, &pctx);
1894 check_immutable(ctx, &pctx);
1895 check_size(ctx, &pctx);
1896 ctx->fs_blockdev_count++;
1897 } else if (LINUX_S_ISLNK (inode->i_mode) &&
1898 e2fsck_pass1_check_symlink(fs, ino, inode,
1899 block_buf)) {
1900 check_immutable(ctx, &pctx);
1901 ctx->fs_symlinks_count++;
1902 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
1903 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1904 continue;
1905 } else if (ext2fs_is_fast_symlink(inode)) {
1906 ctx->fs_fast_symlinks_count++;
1907 check_blocks(ctx, &pctx, block_buf,
1908 &ea_ibody_quota);
1909 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1910 continue;
1911 }
1912 }
1913 else if (LINUX_S_ISFIFO (inode->i_mode) &&
1914 e2fsck_pass1_check_device_inode(fs, inode)) {
1915 check_extents_inlinedata(ctx, &pctx);
1916 check_immutable(ctx, &pctx);
1917 check_size(ctx, &pctx);
1918 ctx->fs_fifo_count++;
1919 } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
1920 e2fsck_pass1_check_device_inode(fs, inode)) {
1921 check_extents_inlinedata(ctx, &pctx);
1922 check_immutable(ctx, &pctx);
1923 check_size(ctx, &pctx);
1924 ctx->fs_sockets_count++;
1925 } else
1926 mark_inode_bad(ctx, ino);
1927 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1928 !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
1929 if (inode->i_block[EXT2_IND_BLOCK])
1930 ctx->fs_ind_count++;
1931 if (inode->i_block[EXT2_DIND_BLOCK])
1932 ctx->fs_dind_count++;
1933 if (inode->i_block[EXT2_TIND_BLOCK])
1934 ctx->fs_tind_count++;
1935 }
1936 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1937 !(inode->i_flags & EXT4_INLINE_DATA_FL) &&
1938 (inode->i_block[EXT2_IND_BLOCK] ||
1939 inode->i_block[EXT2_DIND_BLOCK] ||
1940 inode->i_block[EXT2_TIND_BLOCK] ||
1941 ext2fs_file_acl_block(fs, inode))) {
1942 struct process_inode_block *itp;
1943
1944 itp = &inodes_to_process[process_inode_count];
1945 itp->ino = ino;
1946 itp->ea_ibody_quota = ea_ibody_quota;
1947 if (inode_size < sizeof(struct ext2_inode_large))
1948 memcpy(&itp->inode, inode, inode_size);
1949 else
1950 memcpy(&itp->inode, inode, sizeof(itp->inode));
1951 process_inode_count++;
1952 } else
1953 check_blocks(ctx, &pctx, block_buf, &ea_ibody_quota);
1954
1955 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1956
1957 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1958 goto endit;
1959
1960 if (process_inode_count >= ctx->process_inode_size) {
1961 process_inodes(ctx, block_buf);
1962
1963 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1964 goto endit;
1965 }
1966 }
1967 process_inodes(ctx, block_buf);
1968 ext2fs_close_inode_scan(scan);
1969 scan = NULL;
1970
1971 reserve_block_for_root_repair(ctx);
1972 reserve_block_for_lnf_repair(ctx);
1973
1974 /*
1975 * If any extended attribute blocks' reference counts need to
1976 * be adjusted, either up (ctx->refcount_extra), or down
1977 * (ctx->refcount), then fix them.
1978 */
1979 if (ctx->refcount) {
1980 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
1981 ea_refcount_free(ctx->refcount);
1982 ctx->refcount = 0;
1983 }
1984 if (ctx->refcount_extra) {
1985 adjust_extattr_refcount(ctx, ctx->refcount_extra,
1986 block_buf, +1);
1987 ea_refcount_free(ctx->refcount_extra);
1988 ctx->refcount_extra = 0;
1989 }
1990
1991 if (ctx->ea_block_quota_blocks) {
1992 ea_refcount_free(ctx->ea_block_quota_blocks);
1993 ctx->ea_block_quota_blocks = 0;
1994 }
1995
1996 if (ctx->ea_block_quota_inodes) {
1997 ea_refcount_free(ctx->ea_block_quota_inodes);
1998 ctx->ea_block_quota_inodes = 0;
1999 }
2000
2001 if (ctx->invalid_bitmaps)
2002 handle_fs_bad_blocks(ctx);
2003
2004 /* We don't need the block_ea_map any more */
2005 if (ctx->block_ea_map) {
2006 ext2fs_free_block_bitmap(ctx->block_ea_map);
2007 ctx->block_ea_map = 0;
2008 }
2009
2010 if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
2011 clear_problem_context(&pctx);
2012 pctx.errcode = ext2fs_create_resize_inode(fs);
2013 if (pctx.errcode) {
2014 if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE,
2015 &pctx)) {
2016 ctx->flags |= E2F_FLAG_ABORT;
2017 goto endit;
2018 }
2019 pctx.errcode = 0;
2020 }
2021 if (!pctx.errcode) {
2022 e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
2023 "recreate inode");
2024 inode->i_mtime = ctx->now;
2025 e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
2026 "recreate inode");
2027 }
2028 ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
2029 }
2030
2031 if (ctx->flags & E2F_FLAG_RESTART) {
2032 /*
2033 * Only the master copy of the superblock and block
2034 * group descriptors are going to be written during a
2035 * restart, so set the superblock to be used to be the
2036 * master superblock.
2037 */
2038 ctx->use_superblock = 0;
2039 unwind_pass1(fs);
2040 goto endit;
2041 }
2042
2043 if (ctx->block_dup_map) {
2044 if (ctx->options & E2F_OPT_PREEN) {
2045 clear_problem_context(&pctx);
2046 fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
2047 }
2048 e2fsck_pass1_dupblocks(ctx, block_buf);
2049 }
2050 ctx->flags |= E2F_FLAG_ALLOC_OK;
2051 ext2fs_free_mem(&inodes_to_process);
2052 endit:
2053 e2fsck_use_inode_shortcuts(ctx, 0);
2054
2055 if (scan)
2056 ext2fs_close_inode_scan(scan);
2057 if (block_buf)
2058 ext2fs_free_mem(&block_buf);
2059 if (inode)
2060 ext2fs_free_mem(&inode);
2061
2062 /*
2063 * The l+f inode may have been cleared, so zap it now and
2064 * later passes will recalculate it if necessary
2065 */
2066 ctx->lost_and_found = 0;
2067
2068 if ((ctx->flags & E2F_FLAG_SIGNAL_MASK) == 0)
2069 print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io);
2070 else
2071 ctx->invalid_bitmaps++;
2072 }
2073 #undef FINISH_INODE_LOOP
2074
2075 /*
2076 * When the inode_scan routines call this callback at the end of the
2077 * glock group, call process_inodes.
2078 */
2079 static errcode_t scan_callback(ext2_filsys fs,
2080 ext2_inode_scan scan EXT2FS_ATTR((unused)),
2081 dgrp_t group, void * priv_data)
2082 {
2083 struct scan_callback_struct *scan_struct;
2084 e2fsck_t ctx;
2085
2086 scan_struct = (struct scan_callback_struct *) priv_data;
2087 ctx = scan_struct->ctx;
2088
2089 process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf);
2090
2091 if (ctx->progress)
2092 if ((ctx->progress)(ctx, 1, group+1,
2093 ctx->fs->group_desc_count))
2094 return EXT2_ET_CANCEL_REQUESTED;
2095
2096 return 0;
2097 }
2098
2099 /*
2100 * Process the inodes in the "inodes to process" list.
2101 */
2102 static void process_inodes(e2fsck_t ctx, char *block_buf)
2103 {
2104 int i;
2105 struct ext2_inode *old_stashed_inode;
2106 ext2_ino_t old_stashed_ino;
2107 const char *old_operation;
2108 char buf[80];
2109 struct problem_context pctx;
2110
2111 #if 0
2112 printf("begin process_inodes: ");
2113 #endif
2114 if (process_inode_count == 0)
2115 return;
2116 old_operation = ehandler_operation(0);
2117 old_stashed_inode = ctx->stashed_inode;
2118 old_stashed_ino = ctx->stashed_ino;
2119 qsort(inodes_to_process, process_inode_count,
2120 sizeof(struct process_inode_block), process_inode_cmp);
2121 clear_problem_context(&pctx);
2122 for (i=0; i < process_inode_count; i++) {
2123 pctx.inode = ctx->stashed_inode =
2124 (struct ext2_inode *) &inodes_to_process[i].inode;
2125 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
2126
2127 #if 0
2128 printf("%u ", pctx.ino);
2129 #endif
2130 sprintf(buf, _("reading indirect blocks of inode %u"),
2131 pctx.ino);
2132 ehandler_operation(buf);
2133 check_blocks(ctx, &pctx, block_buf,
2134 &inodes_to_process[i].ea_ibody_quota);
2135 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2136 break;
2137 }
2138 ctx->stashed_inode = old_stashed_inode;
2139 ctx->stashed_ino = old_stashed_ino;
2140 process_inode_count = 0;
2141 #if 0
2142 printf("end process inodes\n");
2143 #endif
2144 ehandler_operation(old_operation);
2145 }
2146
2147 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
2148 {
2149 const struct process_inode_block *ib_a =
2150 (const struct process_inode_block *) a;
2151 const struct process_inode_block *ib_b =
2152 (const struct process_inode_block *) b;
2153 int ret;
2154
2155 ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
2156 ib_b->inode.i_block[EXT2_IND_BLOCK]);
2157 if (ret == 0)
2158 /*
2159 * We only call process_inodes() for non-extent
2160 * inodes, so it's OK to pass NULL to
2161 * ext2fs_file_acl_block() here.
2162 */
2163 ret = ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_a->inode)) -
2164 ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_b->inode));
2165 if (ret == 0)
2166 ret = ib_a->ino - ib_b->ino;
2167 return ret;
2168 }
2169
2170 /*
2171 * Mark an inode as being bad in some what
2172 */
2173 static void mark_inode_bad(e2fsck_t ctx, ino_t ino)
2174 {
2175 struct problem_context pctx;
2176
2177 if (!ctx->inode_bad_map) {
2178 clear_problem_context(&pctx);
2179
2180 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2181 _("bad inode map"), EXT2FS_BMAP64_RBTREE,
2182 "inode_bad_map", &ctx->inode_bad_map);
2183 if (pctx.errcode) {
2184 pctx.num = 3;
2185 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2186 /* Should never get here */
2187 ctx->flags |= E2F_FLAG_ABORT;
2188 return;
2189 }
2190 }
2191 ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino);
2192 }
2193
2194 static void add_encrypted_dir(e2fsck_t ctx, ino_t ino)
2195 {
2196 struct problem_context pctx;
2197
2198 if (!ctx->encrypted_dirs) {
2199 pctx.errcode = ext2fs_u32_list_create(&ctx->encrypted_dirs, 0);
2200 if (pctx.errcode)
2201 goto error;
2202 }
2203 pctx.errcode = ext2fs_u32_list_add(ctx->encrypted_dirs, ino);
2204 if (pctx.errcode == 0)
2205 return;
2206 error:
2207 fix_problem(ctx, PR_1_ALLOCATE_ENCRYPTED_DIRLIST, &pctx);
2208 /* Should never get here */
2209 ctx->flags |= E2F_FLAG_ABORT;
2210 }
2211
2212 /*
2213 * This procedure will allocate the inode "bb" (badblock) map table
2214 */
2215 static void alloc_bb_map(e2fsck_t ctx)
2216 {
2217 struct problem_context pctx;
2218
2219 clear_problem_context(&pctx);
2220 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2221 _("inode in bad block map"), EXT2FS_BMAP64_RBTREE,
2222 "inode_bb_map", &ctx->inode_bb_map);
2223 if (pctx.errcode) {
2224 pctx.num = 4;
2225 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2226 /* Should never get here */
2227 ctx->flags |= E2F_FLAG_ABORT;
2228 return;
2229 }
2230 }
2231
2232 /*
2233 * This procedure will allocate the inode imagic table
2234 */
2235 static void alloc_imagic_map(e2fsck_t ctx)
2236 {
2237 struct problem_context pctx;
2238
2239 clear_problem_context(&pctx);
2240 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2241 _("imagic inode map"), EXT2FS_BMAP64_RBTREE,
2242 "inode_imagic_map", &ctx->inode_imagic_map);
2243 if (pctx.errcode) {
2244 pctx.num = 5;
2245 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2246 /* Should never get here */
2247 ctx->flags |= E2F_FLAG_ABORT;
2248 return;
2249 }
2250 }
2251
2252 /*
2253 * Marks a block as in use, setting the dup_map if it's been set
2254 * already. Called by process_block and process_bad_block.
2255 *
2256 * WARNING: Assumes checks have already been done to make sure block
2257 * is valid. This is true in both process_block and process_bad_block.
2258 */
2259 static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block)
2260 {
2261 struct problem_context pctx;
2262
2263 clear_problem_context(&pctx);
2264
2265 if (ext2fs_fast_test_block_bitmap2(ctx->block_found_map, block)) {
2266 if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
2267 !(ctx->options & E2F_OPT_UNSHARE_BLOCKS)) {
2268 return;
2269 }
2270 if (!ctx->block_dup_map) {
2271 pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
2272 _("multiply claimed block map"),
2273 EXT2FS_BMAP64_RBTREE, "block_dup_map",
2274 &ctx->block_dup_map);
2275 if (pctx.errcode) {
2276 pctx.num = 3;
2277 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
2278 &pctx);
2279 /* Should never get here */
2280 ctx->flags |= E2F_FLAG_ABORT;
2281 return;
2282 }
2283 }
2284 ext2fs_fast_mark_block_bitmap2(ctx->block_dup_map, block);
2285 } else {
2286 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block);
2287 }
2288 }
2289
2290 /*
2291 * When cluster size is greater than one block, it is caller's responsibility
2292 * to make sure block parameter starts at a cluster boundary.
2293 */
2294 static _INLINE_ void mark_blocks_used(e2fsck_t ctx, blk64_t block,
2295 unsigned int num)
2296 {
2297 if (ext2fs_test_block_bitmap_range2(ctx->block_found_map, block, num))
2298 ext2fs_mark_block_bitmap_range2(ctx->block_found_map, block, num);
2299 else {
2300 unsigned int i;
2301
2302 for (i = 0; i < num; i += EXT2FS_CLUSTER_RATIO(ctx->fs))
2303 mark_block_used(ctx, block + i);
2304 }
2305 }
2306
2307 /*
2308 * Adjust the extended attribute block's reference counts at the end
2309 * of pass 1, either by subtracting out references for EA blocks that
2310 * are still referenced in ctx->refcount, or by adding references for
2311 * EA blocks that had extra references as accounted for in
2312 * ctx->refcount_extra.
2313 */
2314 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
2315 char *block_buf, int adjust_sign)
2316 {
2317 struct ext2_ext_attr_header *header;
2318 struct problem_context pctx;
2319 ext2_filsys fs = ctx->fs;
2320 blk64_t blk;
2321 __u32 should_be;
2322 ea_value_t count;
2323
2324 clear_problem_context(&pctx);
2325
2326 ea_refcount_intr_begin(refcount);
2327 while (1) {
2328 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
2329 break;
2330 pctx.blk = blk;
2331 pctx.errcode = ext2fs_read_ext_attr3(fs, blk, block_buf,
2332 pctx.ino);
2333 if (pctx.errcode) {
2334 fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
2335 return;
2336 }
2337 header = (struct ext2_ext_attr_header *) block_buf;
2338 pctx.blkcount = header->h_refcount;
2339 should_be = header->h_refcount + adjust_sign * (int)count;
2340 pctx.num = should_be;
2341 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
2342 header->h_refcount = should_be;
2343 pctx.errcode = ext2fs_write_ext_attr3(fs, blk,
2344 block_buf,
2345 pctx.ino);
2346 if (pctx.errcode) {
2347 fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT,
2348 &pctx);
2349 continue;
2350 }
2351 }
2352 }
2353 }
2354
2355 /*
2356 * Handle processing the extended attribute blocks
2357 */
2358 static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
2359 char *block_buf, struct ea_quota *ea_block_quota)
2360 {
2361 ext2_filsys fs = ctx->fs;
2362 ext2_ino_t ino = pctx->ino;
2363 struct ext2_inode *inode = pctx->inode;
2364 blk64_t blk;
2365 char * end;
2366 struct ext2_ext_attr_header *header;
2367 struct ext2_ext_attr_entry *first, *entry;
2368 blk64_t quota_blocks = EXT2FS_C2B(fs, 1);
2369 __u64 quota_inodes = 0;
2370 region_t region = 0;
2371 int failed_csum = 0;
2372
2373 ea_block_quota->blocks = 0;
2374 ea_block_quota->inodes = 0;
2375
2376 blk = ext2fs_file_acl_block(fs, inode);
2377 if (blk == 0)
2378 return 0;
2379
2380 /*
2381 * If the Extended attribute flag isn't set, then a non-zero
2382 * file acl means that the inode is corrupted.
2383 *
2384 * Or if the extended attribute block is an invalid block,
2385 * then the inode is also corrupted.
2386 */
2387 if (!ext2fs_has_feature_xattr(fs->super) ||
2388 (blk < fs->super->s_first_data_block) ||
2389 (blk >= ext2fs_blocks_count(fs->super))) {
2390 mark_inode_bad(ctx, ino);
2391 return 0;
2392 }
2393
2394 /* If ea bitmap hasn't been allocated, create it */
2395 if (!ctx->block_ea_map) {
2396 pctx->errcode = e2fsck_allocate_block_bitmap(fs,
2397 _("ext attr block map"),
2398 EXT2FS_BMAP64_RBTREE, "block_ea_map",
2399 &ctx->block_ea_map);
2400 if (pctx->errcode) {
2401 pctx->num = 2;
2402 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
2403 ctx->flags |= E2F_FLAG_ABORT;
2404 return 0;
2405 }
2406 }
2407
2408 /* Create the EA refcount structure if necessary */
2409 if (!ctx->refcount) {
2410 pctx->errcode = ea_refcount_create(0, &ctx->refcount);
2411 if (pctx->errcode) {
2412 pctx->num = 1;
2413 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2414 ctx->flags |= E2F_FLAG_ABORT;
2415 return 0;
2416 }
2417 }
2418
2419 #if 0
2420 /* Debugging text */
2421 printf("Inode %u has EA block %u\n", ino, blk);
2422 #endif
2423
2424 /* Have we seen this EA block before? */
2425 if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) {
2426 ea_block_quota->blocks = EXT2FS_C2B(fs, 1);
2427 ea_block_quota->inodes = 0;
2428
2429 if (ctx->ea_block_quota_blocks) {
2430 ea_refcount_fetch(ctx->ea_block_quota_blocks, blk,
2431 &quota_blocks);
2432 if (quota_blocks)
2433 ea_block_quota->blocks = quota_blocks;
2434 }
2435
2436 if (ctx->ea_block_quota_inodes)
2437 ea_refcount_fetch(ctx->ea_block_quota_inodes, blk,
2438 &ea_block_quota->inodes);
2439
2440 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
2441 return 1;
2442 /* Ooops, this EA was referenced more than it stated */
2443 if (!ctx->refcount_extra) {
2444 pctx->errcode = ea_refcount_create(0,
2445 &ctx->refcount_extra);
2446 if (pctx->errcode) {
2447 pctx->num = 2;
2448 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2449 ctx->flags |= E2F_FLAG_ABORT;
2450 return 0;
2451 }
2452 }
2453 ea_refcount_increment(ctx->refcount_extra, blk, 0);
2454 return 1;
2455 }
2456
2457 /*
2458 * OK, we haven't seen this EA block yet. So we need to
2459 * validate it
2460 */
2461 pctx->blk = blk;
2462 pctx->errcode = ext2fs_read_ext_attr3(fs, blk, block_buf, pctx->ino);
2463 if (pctx->errcode == EXT2_ET_EXT_ATTR_CSUM_INVALID) {
2464 pctx->errcode = 0;
2465 failed_csum = 1;
2466 } else if (pctx->errcode == EXT2_ET_BAD_EA_HEADER)
2467 pctx->errcode = 0;
2468
2469 if (pctx->errcode &&
2470 fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx)) {
2471 pctx->errcode = 0;
2472 goto clear_extattr;
2473 }
2474 header = (struct ext2_ext_attr_header *) block_buf;
2475 pctx->blk = ext2fs_file_acl_block(fs, inode);
2476 if (((ctx->ext_attr_ver == 1) &&
2477 (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
2478 ((ctx->ext_attr_ver == 2) &&
2479 (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
2480 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
2481 goto clear_extattr;
2482 }
2483
2484 if (header->h_blocks != 1) {
2485 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
2486 goto clear_extattr;
2487 }
2488
2489 if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
2490 goto clear_extattr;
2491
2492 region = region_create(0, fs->blocksize);
2493 if (!region) {
2494 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
2495 ctx->flags |= E2F_FLAG_ABORT;
2496 return 0;
2497 }
2498 if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
2499 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2500 goto clear_extattr;
2501 }
2502
2503 first = (struct ext2_ext_attr_entry *)(header+1);
2504 end = block_buf + fs->blocksize;
2505 entry = first;
2506 while ((char *)entry < end && *(__u32 *)entry) {
2507 __u32 hash;
2508
2509 if (region_allocate(region, (char *)entry - (char *)header,
2510 EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
2511 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2512 goto clear_extattr;
2513 break;
2514 }
2515 if ((ctx->ext_attr_ver == 1 &&
2516 (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
2517 (ctx->ext_attr_ver == 2 &&
2518 entry->e_name_index == 0)) {
2519 if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
2520 goto clear_extattr;
2521 break;
2522 }
2523 if (entry->e_value_inum == 0) {
2524 if (entry->e_value_offs + entry->e_value_size >
2525 fs->blocksize) {
2526 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
2527 goto clear_extattr;
2528 break;
2529 }
2530 if (entry->e_value_size &&
2531 region_allocate(region, entry->e_value_offs,
2532 EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
2533 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION,
2534 pctx))
2535 goto clear_extattr;
2536 }
2537
2538 hash = ext2fs_ext_attr_hash_entry(entry, block_buf +
2539 entry->e_value_offs);
2540
2541 if (entry->e_hash != hash) {
2542 pctx->num = entry->e_hash;
2543 if (fix_problem(ctx, PR_1_ATTR_HASH, pctx))
2544 goto clear_extattr;
2545 entry->e_hash = hash;
2546 }
2547 } else {
2548 problem_t problem;
2549 blk64_t entry_quota_blocks;
2550
2551 problem = check_large_ea_inode(ctx, entry, pctx,
2552 &entry_quota_blocks);
2553 if (problem && fix_problem(ctx, problem, pctx))
2554 goto clear_extattr;
2555
2556 quota_blocks += entry_quota_blocks;
2557 quota_inodes++;
2558 }
2559
2560 entry = EXT2_EXT_ATTR_NEXT(entry);
2561 }
2562 if (region_allocate(region, (char *)entry - (char *)header, 4)) {
2563 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2564 goto clear_extattr;
2565 }
2566 region_free(region);
2567
2568 /*
2569 * We only get here if there was no other errors that were fixed.
2570 * If there was a checksum fail, ask to correct it.
2571 */
2572 if (failed_csum &&
2573 fix_problem(ctx, PR_1_EA_BLOCK_ONLY_CSUM_INVALID, pctx)) {
2574 pctx->errcode = ext2fs_write_ext_attr3(fs, blk, block_buf,
2575 pctx->ino);
2576 if (pctx->errcode)
2577 return 0;
2578 }
2579
2580 if (quota_blocks != EXT2FS_C2B(fs, 1U)) {
2581 if (!ctx->ea_block_quota_blocks) {
2582 pctx->errcode = ea_refcount_create(0,
2583 &ctx->ea_block_quota_blocks);
2584 if (pctx->errcode) {
2585 pctx->num = 3;
2586 goto refcount_fail;
2587 }
2588 }
2589 ea_refcount_store(ctx->ea_block_quota_blocks, blk,
2590 quota_blocks);
2591 }
2592
2593 if (quota_inodes) {
2594 if (!ctx->ea_block_quota_inodes) {
2595 pctx->errcode = ea_refcount_create(0,
2596 &ctx->ea_block_quota_inodes);
2597 if (pctx->errcode) {
2598 pctx->num = 4;
2599 refcount_fail:
2600 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2601 ctx->flags |= E2F_FLAG_ABORT;
2602 return 0;
2603 }
2604 }
2605
2606 ea_refcount_store(ctx->ea_block_quota_inodes, blk,
2607 quota_inodes);
2608 }
2609 ea_block_quota->blocks = quota_blocks;
2610 ea_block_quota->inodes = quota_inodes;
2611
2612 inc_ea_inode_refs(ctx, pctx, first, end);
2613 ea_refcount_store(ctx->refcount, blk, header->h_refcount - 1);
2614 mark_block_used(ctx, blk);
2615 ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk);
2616 return 1;
2617
2618 clear_extattr:
2619 if (region)
2620 region_free(region);
2621 ext2fs_file_acl_block_set(fs, inode, 0);
2622 e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
2623 return 0;
2624 }
2625
2626 /* Returns 1 if bad htree, 0 if OK */
2627 static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
2628 ext2_ino_t ino, struct ext2_inode *inode,
2629 char *block_buf)
2630 {
2631 struct ext2_dx_root_info *root;
2632 ext2_filsys fs = ctx->fs;
2633 errcode_t retval;
2634 blk64_t blk;
2635
2636 if ((!LINUX_S_ISDIR(inode->i_mode) &&
2637 fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
2638 (!ext2fs_has_feature_dir_index(fs->super) &&
2639 fix_problem(ctx, PR_1_HTREE_SET, pctx)))
2640 return 1;
2641
2642 pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk);
2643
2644 if ((pctx->errcode) ||
2645 (blk == 0) ||
2646 (blk < fs->super->s_first_data_block) ||
2647 (blk >= ext2fs_blocks_count(fs->super))) {
2648 if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2649 return 1;
2650 else
2651 return 0;
2652 }
2653
2654 retval = io_channel_read_blk64(fs->io, blk, 1, block_buf);
2655 if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2656 return 1;
2657
2658 /* XXX should check that beginning matches a directory */
2659 root = (struct ext2_dx_root_info *) (block_buf + 24);
2660
2661 if ((root->reserved_zero || root->info_length < 8) &&
2662 fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2663 return 1;
2664
2665 pctx->num = root->hash_version;
2666 if ((root->hash_version != EXT2_HASH_LEGACY) &&
2667 (root->hash_version != EXT2_HASH_HALF_MD4) &&
2668 (root->hash_version != EXT2_HASH_TEA) &&
2669 fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
2670 return 1;
2671
2672 if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
2673 fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
2674 return 1;
2675
2676 pctx->num = root->indirect_levels;
2677 if ((root->indirect_levels > ext2_dir_htree_level(fs)) &&
2678 fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
2679 return 1;
2680
2681 return 0;
2682 }
2683
2684 void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
2685 struct ext2_inode *inode, int restart_flag,
2686 const char *source)
2687 {
2688 inode->i_flags = 0;
2689 inode->i_links_count = 0;
2690 ext2fs_icount_store(ctx->inode_link_info, ino, 0);
2691 inode->i_dtime = ctx->now;
2692
2693 /*
2694 * If a special inode has such rotten block mappings that we
2695 * want to clear the whole inode, be sure to actually zap
2696 * the block maps because i_links_count isn't checked for
2697 * special inodes, and we'll end up right back here the next
2698 * time we run fsck.
2699 */
2700 if (ino < EXT2_FIRST_INODE(ctx->fs->super))
2701 memset(inode->i_block, 0, sizeof(inode->i_block));
2702
2703 ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
2704 ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
2705 if (ctx->inode_reg_map)
2706 ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
2707 if (ctx->inode_bad_map)
2708 ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
2709
2710 /*
2711 * If the inode was partially accounted for before processing
2712 * was aborted, we need to restart the pass 1 scan.
2713 */
2714 ctx->flags |= restart_flag;
2715
2716 if (ino == EXT2_BAD_INO)
2717 memset(inode, 0, sizeof(struct ext2_inode));
2718
2719 e2fsck_write_inode(ctx, ino, inode, source);
2720 }
2721
2722 /*
2723 * Use the multiple-blocks reclamation code to fix alignment problems in
2724 * a bigalloc filesystem. We want a logical cluster to map to *only* one
2725 * physical cluster, and we want the block offsets within that cluster to
2726 * line up.
2727 */
2728 static int has_unaligned_cluster_map(e2fsck_t ctx,
2729 blk64_t last_pblk, blk64_t last_lblk,
2730 blk64_t pblk, blk64_t lblk)
2731 {
2732 blk64_t cluster_mask;
2733
2734 if (!ctx->fs->cluster_ratio_bits)
2735 return 0;
2736 cluster_mask = EXT2FS_CLUSTER_MASK(ctx->fs);
2737
2738 /*
2739 * If the block in the logical cluster doesn't align with the block in
2740 * the physical cluster...
2741 */
2742 if ((lblk & cluster_mask) != (pblk & cluster_mask))
2743 return 1;
2744
2745 /*
2746 * If we cross a physical cluster boundary within a logical cluster...
2747 */
2748 if (last_pblk && (lblk & cluster_mask) != 0 &&
2749 EXT2FS_B2C(ctx->fs, lblk) == EXT2FS_B2C(ctx->fs, last_lblk) &&
2750 EXT2FS_B2C(ctx->fs, pblk) != EXT2FS_B2C(ctx->fs, last_pblk))
2751 return 1;
2752
2753 return 0;
2754 }
2755
2756 static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
2757 struct process_block_struct *pb,
2758 blk64_t start_block, blk64_t end_block,
2759 blk64_t eof_block,
2760 ext2_extent_handle_t ehandle,
2761 int try_repairs)
2762 {
2763 struct ext2fs_extent extent;
2764 blk64_t blk, last_lblk;
2765 unsigned int i, n;
2766 int is_dir, is_leaf;
2767 problem_t problem;
2768 struct ext2_extent_info info;
2769 int failed_csum = 0;
2770
2771 if (pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID)
2772 failed_csum = 1;
2773
2774 pctx->errcode = ext2fs_extent_get_info(ehandle, &info);
2775 if (pctx->errcode)
2776 return;
2777 if (!(ctx->options & E2F_OPT_FIXES_ONLY) &&
2778 !pb->eti.force_rebuild) {
2779 struct extent_tree_level *etl;
2780
2781 etl = pb->eti.ext_info + info.curr_level;
2782 etl->num_extents += info.num_entries;
2783 etl->max_extents += info.max_entries;
2784 /*
2785 * Implementation wart: Splitting extent blocks when appending
2786 * will leave the old block with one free entry. Therefore
2787 * unless the node is totally full, pretend that a non-root
2788 * extent block can hold one fewer entry than it actually does,
2789 * so that we don't repeatedly rebuild the extent tree.
2790 */
2791 if (info.curr_level && info.num_entries < info.max_entries)
2792 etl->max_extents--;
2793 }
2794
2795 pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB,
2796 &extent);
2797 while ((pctx->errcode == 0 ||
2798 pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID) &&
2799 info.num_entries-- > 0) {
2800 is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF;
2801 is_dir = LINUX_S_ISDIR(pctx->inode->i_mode);
2802 last_lblk = extent.e_lblk + extent.e_len - 1;
2803
2804 problem = 0;
2805 pctx->blk = extent.e_pblk;
2806 pctx->blk2 = extent.e_lblk;
2807 pctx->num = extent.e_len;
2808 pctx->blkcount = extent.e_lblk + extent.e_len;
2809
2810 if (extent.e_pblk == 0 ||
2811 extent.e_pblk < ctx->fs->super->s_first_data_block ||
2812 extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super))
2813 problem = PR_1_EXTENT_BAD_START_BLK;
2814 else if (extent.e_lblk < start_block)
2815 problem = PR_1_OUT_OF_ORDER_EXTENTS;
2816 else if ((end_block && last_lblk > end_block) &&
2817 !(last_lblk > eof_block &&
2818 ((extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) ||
2819 (pctx->inode->i_flags & EXT4_VERITY_FL))))
2820 problem = PR_1_EXTENT_END_OUT_OF_BOUNDS;
2821 else if (is_leaf && extent.e_len == 0)
2822 problem = PR_1_EXTENT_LENGTH_ZERO;
2823 else if (is_leaf &&
2824 (extent.e_pblk + extent.e_len) >
2825 ext2fs_blocks_count(ctx->fs->super))
2826 problem = PR_1_EXTENT_ENDS_BEYOND;
2827 else if (is_leaf && is_dir &&
2828 ((extent.e_lblk + extent.e_len) >
2829 (1U << (21 - ctx->fs->super->s_log_block_size))))
2830 problem = PR_1_TOOBIG_DIR;
2831
2832 if (is_leaf && problem == 0 && extent.e_len > 0) {
2833 #if 0
2834 printf("extent_region(ino=%u, expect=%llu, "
2835 "lblk=%llu, len=%u)\n",
2836 pb->ino, pb->next_lblock,
2837 extent.e_lblk, extent.e_len);
2838 #endif
2839 if (extent.e_lblk < pb->next_lblock)
2840 problem = PR_1_EXTENT_COLLISION;
2841 else if (extent.e_lblk + extent.e_len > pb->next_lblock)
2842 pb->next_lblock = extent.e_lblk + extent.e_len;
2843 }
2844
2845 /*
2846 * Uninitialized blocks in a directory? Clear the flag and
2847 * we'll interpret the blocks later.
2848 */
2849 if (try_repairs && is_dir && problem == 0 &&
2850 (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
2851 fix_problem(ctx, PR_1_UNINIT_DBLOCK, pctx)) {
2852 extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
2853 pb->inode_modified = 1;
2854 pctx->errcode = ext2fs_extent_replace(ehandle, 0,
2855 &extent);
2856 if (pctx->errcode)
2857 return;
2858 failed_csum = 0;
2859 }
2860
2861 if (try_repairs && problem) {
2862 report_problem:
2863 if (fix_problem(ctx, problem, pctx)) {
2864 if (ctx->invalid_bitmaps) {
2865 /*
2866 * If fsck knows the bitmaps are bad,
2867 * skip to the next extent and
2868 * try to clear this extent again
2869 * after fixing the bitmaps, by
2870 * restarting fsck.
2871 */
2872 pctx->errcode = ext2fs_extent_get(
2873 ehandle,
2874 EXT2_EXTENT_NEXT_SIB,
2875 &extent);
2876 ctx->flags |= E2F_FLAG_RESTART_LATER;
2877 if (pctx->errcode ==
2878 EXT2_ET_NO_CURRENT_NODE) {
2879 pctx->errcode = 0;
2880 break;
2881 }
2882 continue;
2883 }
2884 e2fsck_read_bitmaps(ctx);
2885 pb->inode_modified = 1;
2886 pctx->errcode =
2887 ext2fs_extent_delete(ehandle, 0);
2888 if (pctx->errcode) {
2889 pctx->str = "ext2fs_extent_delete";
2890 return;
2891 }
2892 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
2893 if (pctx->errcode &&
2894 pctx->errcode != EXT2_ET_NO_CURRENT_NODE) {
2895 pctx->str = "ext2fs_extent_fix_parents";
2896 return;
2897 }
2898 pctx->errcode = ext2fs_extent_get(ehandle,
2899 EXT2_EXTENT_CURRENT,
2900 &extent);
2901 if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) {
2902 pctx->errcode = 0;
2903 break;
2904 }
2905 failed_csum = 0;
2906 continue;
2907 }
2908 goto next;
2909 }
2910
2911 if (!is_leaf) {
2912 blk64_t lblk = extent.e_lblk;
2913 int next_try_repairs = 1;
2914
2915 blk = extent.e_pblk;
2916
2917 /*
2918 * If this lower extent block collides with critical
2919 * metadata, don't try to repair the damage. Pass 1b
2920 * will reallocate the block; then we can try again.
2921 */
2922 if (pb->ino != EXT2_RESIZE_INO &&
2923 extent.e_pblk < ctx->fs->super->s_blocks_count &&
2924 ext2fs_test_block_bitmap2(ctx->block_metadata_map,
2925 extent.e_pblk)) {
2926 next_try_repairs = 0;
2927 pctx->blk = blk;
2928 fix_problem(ctx,
2929 PR_1_CRITICAL_METADATA_COLLISION,
2930 pctx);
2931 if ((ctx->options & E2F_OPT_NO) == 0)
2932 ctx->flags |= E2F_FLAG_RESTART_LATER;
2933 }
2934 pctx->errcode = ext2fs_extent_get(ehandle,
2935 EXT2_EXTENT_DOWN, &extent);
2936 if (pctx->errcode &&
2937 pctx->errcode != EXT2_ET_EXTENT_CSUM_INVALID) {
2938 pctx->str = "EXT2_EXTENT_DOWN";
2939 problem = PR_1_EXTENT_HEADER_INVALID;
2940 if (!next_try_repairs)
2941 return;
2942 if (pctx->errcode == EXT2_ET_EXTENT_HEADER_BAD)
2943 goto report_problem;
2944 return;
2945 }
2946 /* The next extent should match this index's logical start */
2947 if (extent.e_lblk != lblk) {
2948 struct ext2_extent_info e_info;
2949
2950 ext2fs_extent_get_info(ehandle, &e_info);
2951 pctx->blk = lblk;
2952 pctx->blk2 = extent.e_lblk;
2953 pctx->num = e_info.curr_level - 1;
2954 problem = PR_1_EXTENT_INDEX_START_INVALID;
2955 if (fix_problem(ctx, problem, pctx)) {
2956 pb->inode_modified = 1;
2957 pctx->errcode =
2958 ext2fs_extent_fix_parents(ehandle);
2959 if (pctx->errcode) {
2960 pctx->str = "ext2fs_extent_fix_parents";
2961 return;
2962 }
2963 }
2964 }
2965 scan_extent_node(ctx, pctx, pb, extent.e_lblk,
2966 last_lblk, eof_block, ehandle,
2967 next_try_repairs);
2968 if (pctx->errcode)
2969 return;
2970 pctx->errcode = ext2fs_extent_get(ehandle,
2971 EXT2_EXTENT_UP, &extent);
2972 if (pctx->errcode) {
2973 pctx->str = "EXT2_EXTENT_UP";
2974 return;
2975 }
2976 mark_block_used(ctx, blk);
2977 pb->num_blocks++;
2978 goto next;
2979 }
2980
2981 if ((pb->previous_block != 0) &&
2982 (pb->previous_block+1 != extent.e_pblk)) {
2983 if (ctx->options & E2F_OPT_FRAGCHECK) {
2984 char type = '?';
2985
2986 if (pb->is_dir)
2987 type = 'd';
2988 else if (pb->is_reg)
2989 type = 'f';
2990
2991 printf(("%6lu(%c): expecting %6lu "
2992 "actual extent "
2993 "phys %6lu log %lu len %lu\n"),
2994 (unsigned long) pctx->ino, type,
2995 (unsigned long) pb->previous_block+1,
2996 (unsigned long) extent.e_pblk,
2997 (unsigned long) extent.e_lblk,
2998 (unsigned long) extent.e_len);
2999 }
3000 pb->fragmented = 1;
3001 }
3002 /*
3003 * If we notice a gap in the logical block mappings of an
3004 * extent-mapped directory, offer to close the hole by
3005 * moving the logical block down, otherwise we'll go mad in
3006 * pass 3 allocating empty directory blocks to fill the hole.
3007 */
3008 if (try_repairs && is_dir &&
3009 pb->last_block + 1 < extent.e_lblk) {
3010 blk64_t new_lblk;
3011
3012 new_lblk = pb->last_block + 1;
3013 if (EXT2FS_CLUSTER_RATIO(ctx->fs) > 1)
3014 new_lblk = ((new_lblk +
3015 EXT2FS_CLUSTER_RATIO(ctx->fs) - 1) &
3016 ~EXT2FS_CLUSTER_MASK(ctx->fs)) |
3017 (extent.e_pblk &
3018 EXT2FS_CLUSTER_MASK(ctx->fs));
3019 pctx->blk = extent.e_lblk;
3020 pctx->blk2 = new_lblk;
3021 if (fix_problem(ctx, PR_1_COLLAPSE_DBLOCK, pctx)) {
3022 extent.e_lblk = new_lblk;
3023 pb->inode_modified = 1;
3024 pctx->errcode = ext2fs_extent_replace(ehandle,
3025 0, &extent);
3026 if (pctx->errcode) {
3027 pctx->errcode = 0;
3028 goto alloc_later;
3029 }
3030 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
3031 if (pctx->errcode)
3032 goto failed_add_dir_block;
3033 pctx->errcode = ext2fs_extent_goto(ehandle,
3034 extent.e_lblk);
3035 if (pctx->errcode)
3036 goto failed_add_dir_block;
3037 last_lblk = extent.e_lblk + extent.e_len - 1;
3038 failed_csum = 0;
3039 }
3040 }
3041 alloc_later:
3042 if (is_dir) {
3043 while (++pb->last_db_block <
3044 (e2_blkcnt_t) extent.e_lblk) {
3045 pctx->errcode = ext2fs_add_dir_block2(
3046 ctx->fs->dblist,
3047 pb->ino, 0,
3048 pb->last_db_block);
3049 if (pctx->errcode) {
3050 pctx->blk = 0;
3051 pctx->num = pb->last_db_block;
3052 goto failed_add_dir_block;
3053 }
3054 }
3055
3056 for (i = 0; i < extent.e_len; i++) {
3057 pctx->errcode = ext2fs_add_dir_block2(
3058 ctx->fs->dblist,
3059 pctx->ino,
3060 extent.e_pblk + i,
3061 extent.e_lblk + i);
3062 if (pctx->errcode) {
3063 pctx->blk = extent.e_pblk + i;
3064 pctx->num = extent.e_lblk + i;
3065 failed_add_dir_block:
3066 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3067 /* Should never get here */
3068 ctx->flags |= E2F_FLAG_ABORT;
3069 return;
3070 }
3071 }
3072 if (extent.e_len > 0)
3073 pb->last_db_block = extent.e_lblk + extent.e_len - 1;
3074 }
3075 if (has_unaligned_cluster_map(ctx, pb->previous_block,
3076 pb->last_block,
3077 extent.e_pblk,
3078 extent.e_lblk)) {
3079 for (i = 0; i < extent.e_len; i++) {
3080 pctx->blk = extent.e_lblk + i;
3081 pctx->blk2 = extent.e_pblk + i;
3082 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
3083 mark_block_used(ctx, extent.e_pblk + i);
3084 mark_block_used(ctx, extent.e_pblk + i);
3085 }
3086 }
3087
3088 /*
3089 * Check whether first cluster got marked in previous iteration.
3090 */
3091 if (ctx->fs->cluster_ratio_bits &&
3092 pb->previous_block &&
3093 (EXT2FS_B2C(ctx->fs, extent.e_pblk) ==
3094 EXT2FS_B2C(ctx->fs, pb->previous_block)))
3095 /* Set blk to the beginning of next cluster. */
3096 blk = EXT2FS_C2B(
3097 ctx->fs,
3098 EXT2FS_B2C(ctx->fs, extent.e_pblk) + 1);
3099 else
3100 /* Set blk to the beginning of current cluster. */
3101 blk = EXT2FS_C2B(ctx->fs,
3102 EXT2FS_B2C(ctx->fs, extent.e_pblk));
3103
3104 if (blk < extent.e_pblk + extent.e_len) {
3105 mark_blocks_used(ctx, blk,
3106 extent.e_pblk + extent.e_len - blk);
3107 n = DIV_ROUND_UP(extent.e_pblk + extent.e_len - blk,
3108 EXT2FS_CLUSTER_RATIO(ctx->fs));
3109 pb->num_blocks += n;
3110 }
3111 pb->last_block = extent.e_lblk + extent.e_len - 1;
3112 pb->previous_block = extent.e_pblk + extent.e_len - 1;
3113 start_block = pb->last_block = last_lblk;
3114 if (is_leaf && !is_dir &&
3115 !(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT))
3116 pb->last_init_lblock = last_lblk;
3117 next:
3118 pctx->errcode = ext2fs_extent_get(ehandle,
3119 EXT2_EXTENT_NEXT_SIB,
3120 &extent);
3121 }
3122
3123 /* Failed csum but passes checks? Ask to fix checksum. */
3124 if (failed_csum &&
3125 fix_problem(ctx, PR_1_EXTENT_ONLY_CSUM_INVALID, pctx)) {
3126 pb->inode_modified = 1;
3127 pctx->errcode = ext2fs_extent_replace(ehandle, 0, &extent);
3128 if (pctx->errcode)
3129 return;
3130 }
3131
3132 if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT)
3133 pctx->errcode = 0;
3134 }
3135
3136 static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
3137 struct process_block_struct *pb)
3138 {
3139 struct ext2_extent_info info;
3140 struct ext2_inode *inode = pctx->inode;
3141 ext2_extent_handle_t ehandle;
3142 ext2_filsys fs = ctx->fs;
3143 ext2_ino_t ino = pctx->ino;
3144 errcode_t retval;
3145 blk64_t eof_lblk;
3146 struct ext3_extent_header *eh;
3147
3148 /* Check for a proper extent header... */
3149 eh = (struct ext3_extent_header *) &inode->i_block[0];
3150 retval = ext2fs_extent_header_verify(eh, sizeof(inode->i_block));
3151 if (retval) {
3152 if (fix_problem(ctx, PR_1_MISSING_EXTENT_HEADER, pctx))
3153 e2fsck_clear_inode(ctx, ino, inode, 0,
3154 "check_blocks_extents");
3155 pctx->errcode = 0;
3156 return;
3157 }
3158
3159 /* ...since this function doesn't fail if i_block is zeroed. */
3160 pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle);
3161 if (pctx->errcode) {
3162 if (fix_problem(ctx, PR_1_READ_EXTENT, pctx))
3163 e2fsck_clear_inode(ctx, ino, inode, 0,
3164 "check_blocks_extents");
3165 pctx->errcode = 0;
3166 return;
3167 }
3168
3169 retval = ext2fs_extent_get_info(ehandle, &info);
3170 if (retval == 0) {
3171 int max_depth = info.max_depth;
3172
3173 if (max_depth >= MAX_EXTENT_DEPTH_COUNT)
3174 max_depth = MAX_EXTENT_DEPTH_COUNT-1;
3175 ctx->extent_depth_count[max_depth]++;
3176 }
3177
3178 /* Check maximum extent depth */
3179 pctx->blk = info.max_depth;
3180 pctx->blk2 = ext2fs_max_extent_depth(ehandle);
3181 if (pctx->blk2 < pctx->blk &&
3182 fix_problem(ctx, PR_1_EXTENT_BAD_MAX_DEPTH, pctx))
3183 pb->eti.force_rebuild = 1;
3184
3185 /* Can we collect extent tree level stats? */
3186 pctx->blk = MAX_EXTENT_DEPTH_COUNT;
3187 if (pctx->blk2 > pctx->blk)
3188 fix_problem(ctx, PR_1E_MAX_EXTENT_TREE_DEPTH, pctx);
3189 memset(pb->eti.ext_info, 0, sizeof(pb->eti.ext_info));
3190 pb->eti.ino = pb->ino;
3191
3192 pb->next_lblock = 0;
3193
3194 eof_lblk = ((EXT2_I_SIZE(inode) + fs->blocksize - 1) >>
3195 EXT2_BLOCK_SIZE_BITS(fs->super)) - 1;
3196 scan_extent_node(ctx, pctx, pb, 0, 0, eof_lblk, ehandle, 1);
3197 if (pctx->errcode &&
3198 fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) {
3199 pb->num_blocks = 0;
3200 inode->i_blocks = 0;
3201 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
3202 "check_blocks_extents");
3203 pctx->errcode = 0;
3204 }
3205 ext2fs_extent_free(ehandle);
3206
3207 /* Rebuild unless it's a dir and we're rehashing it */
3208 if (LINUX_S_ISDIR(inode->i_mode) &&
3209 e2fsck_dir_will_be_rehashed(ctx, ino))
3210 return;
3211
3212 if (ctx->options & E2F_OPT_CONVERT_BMAP)
3213 e2fsck_rebuild_extents_later(ctx, ino);
3214 else
3215 e2fsck_should_rebuild_extents(ctx, pctx, &pb->eti, &info);
3216 }
3217
3218 /*
3219 * In fact we don't need to check blocks for an inode with inline data
3220 * because this inode doesn't have any blocks. In this function all
3221 * we need to do is add this inode into dblist when it is a directory.
3222 */
3223 static void check_blocks_inline_data(e2fsck_t ctx, struct problem_context *pctx,
3224 struct process_block_struct *pb)
3225 {
3226 int flags;
3227 size_t inline_data_size = 0;
3228
3229 if (!pb->is_dir) {
3230 pctx->errcode = 0;
3231 return;
3232 }
3233
3234 /* Process the dirents in i_block[] as the "first" block. */
3235 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 0);
3236 if (pctx->errcode)
3237 goto err;
3238
3239 /* Process the dirents in the EA as a "second" block. */
3240 flags = ctx->fs->flags;
3241 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3242 pctx->errcode = ext2fs_inline_data_size(ctx->fs, pb->ino,
3243 &inline_data_size);
3244 ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3245 (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3246 if (pctx->errcode) {
3247 pctx->errcode = 0;
3248 return;
3249 }
3250
3251 if (inline_data_size <= EXT4_MIN_INLINE_DATA_SIZE)
3252 return;
3253
3254 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 1);
3255 if (pctx->errcode)
3256 goto err;
3257
3258 return;
3259 err:
3260 pctx->blk = 0;
3261 pctx->num = 0;
3262 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3263 ctx->flags |= E2F_FLAG_ABORT;
3264 }
3265
3266 /*
3267 * This subroutine is called on each inode to account for all of the
3268 * blocks used by that inode.
3269 */
3270 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
3271 char *block_buf, const struct ea_quota *ea_ibody_quota)
3272 {
3273 ext2_filsys fs = ctx->fs;
3274 struct process_block_struct pb;
3275 ext2_ino_t ino = pctx->ino;
3276 struct ext2_inode *inode = pctx->inode;
3277 unsigned bad_size = 0;
3278 int dirty_inode = 0;
3279 int extent_fs;
3280 int inlinedata_fs;
3281 __u64 size;
3282 struct ea_quota ea_block_quota;
3283
3284 pb.ino = ino;
3285 pb.num_blocks = EXT2FS_B2C(ctx->fs,
3286 ea_ibody_quota ? ea_ibody_quota->blocks : 0);
3287 pb.last_block = ~0;
3288 pb.last_init_lblock = -1;
3289 pb.last_db_block = -1;
3290 pb.num_illegal_blocks = 0;
3291 pb.suppress = 0; pb.clear = 0;
3292 pb.fragmented = 0;
3293 pb.compressed = 0;
3294 pb.previous_block = 0;
3295 pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
3296 pb.is_reg = LINUX_S_ISREG(inode->i_mode);
3297 pb.max_blocks = 1U << (31 - fs->super->s_log_block_size);
3298 pb.inode = inode;
3299 pb.pctx = pctx;
3300 pb.ctx = ctx;
3301 pb.inode_modified = 0;
3302 pb.eti.force_rebuild = 0;
3303 pctx->ino = ino;
3304 pctx->errcode = 0;
3305
3306 extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
3307 inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
3308
3309 if (check_ext_attr(ctx, pctx, block_buf, &ea_block_quota)) {
3310 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3311 goto out;
3312 pb.num_blocks += EXT2FS_B2C(ctx->fs, ea_block_quota.blocks);
3313 }
3314
3315 if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL))
3316 check_blocks_inline_data(ctx, pctx, &pb);
3317 else if (ext2fs_inode_has_valid_blocks2(fs, inode)) {
3318 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
3319 check_blocks_extents(ctx, pctx, &pb);
3320 else {
3321 int flags;
3322 /*
3323 * If we've modified the inode, write it out before
3324 * iterate() tries to use it.
3325 */
3326 if (dirty_inode) {
3327 e2fsck_write_inode(ctx, ino, inode,
3328 "check_blocks");
3329 dirty_inode = 0;
3330 }
3331 flags = fs->flags;
3332 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3333 pctx->errcode = ext2fs_block_iterate3(fs, ino,
3334 pb.is_dir ? BLOCK_FLAG_HOLE : 0,
3335 block_buf, process_block, &pb);
3336 /*
3337 * We do not have uninitialized extents in non extent
3338 * files.
3339 */
3340 pb.last_init_lblock = pb.last_block;
3341 /*
3342 * If iterate() changed a block mapping, we have to
3343 * re-read the inode. If we decide to clear the
3344 * inode after clearing some stuff, we'll re-write the
3345 * bad mappings into the inode!
3346 */
3347 if (pb.inode_modified)
3348 e2fsck_read_inode(ctx, ino, inode,
3349 "check_blocks");
3350 fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3351 (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3352
3353 if (ctx->options & E2F_OPT_CONVERT_BMAP) {
3354 #ifdef DEBUG
3355 printf("bmap rebuild ino=%d\n", ino);
3356 #endif
3357 if (!LINUX_S_ISDIR(inode->i_mode) ||
3358 !e2fsck_dir_will_be_rehashed(ctx, ino))
3359 e2fsck_rebuild_extents_later(ctx, ino);
3360 }
3361 }
3362 }
3363 end_problem_latch(ctx, PR_LATCH_BLOCK);
3364 end_problem_latch(ctx, PR_LATCH_TOOBIG);
3365 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3366 goto out;
3367 if (pctx->errcode)
3368 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
3369
3370 if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) {
3371 if (LINUX_S_ISDIR(inode->i_mode))
3372 ctx->fs_fragmented_dir++;
3373 else
3374 ctx->fs_fragmented++;
3375 }
3376
3377 if (pb.clear) {
3378 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
3379 "check_blocks");
3380 return;
3381 }
3382
3383 if (inode->i_flags & EXT2_INDEX_FL) {
3384 if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
3385 inode->i_flags &= ~EXT2_INDEX_FL;
3386 dirty_inode++;
3387 } else {
3388 e2fsck_add_dx_dir(ctx, ino, inode, pb.last_block+1);
3389 }
3390 }
3391
3392 if (!pb.num_blocks && pb.is_dir &&
3393 !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
3394 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
3395 e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
3396 ctx->fs_directory_count--;
3397 return;
3398 }
3399 }
3400
3401 if (ino != quota_type2inum(PRJQUOTA, fs->super) &&
3402 (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INODE(ctx->fs->super)) &&
3403 !(inode->i_flags & EXT4_EA_INODE_FL)) {
3404 quota_data_add(ctx->qctx, (struct ext2_inode_large *) inode,
3405 ino,
3406 pb.num_blocks * EXT2_CLUSTER_SIZE(fs->super));
3407 quota_data_inodes(ctx->qctx, (struct ext2_inode_large *) inode,
3408 ino, (ea_ibody_quota ?
3409 ea_ibody_quota->inodes : 0) +
3410 ea_block_quota.inodes + 1);
3411 }
3412
3413 if (!ext2fs_has_feature_huge_file(fs->super) ||
3414 !(inode->i_flags & EXT4_HUGE_FILE_FL))
3415 pb.num_blocks *= (fs->blocksize / 512);
3416 pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs);
3417 #if 0
3418 printf("inode %u, i_size = %u, last_block = %llu, i_blocks=%llu, num_blocks = %llu\n",
3419 ino, inode->i_size, pb.last_block, ext2fs_inode_i_blocks(fs, inode),
3420 pb.num_blocks);
3421 #endif
3422 if (pb.is_dir) {
3423 unsigned nblock = inode->i_size >> EXT2_BLOCK_SIZE_BITS(fs->super);
3424 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
3425 int flags;
3426 size_t sz = 0;
3427 errcode_t err;
3428
3429 flags = ctx->fs->flags;
3430 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3431 err = ext2fs_inline_data_size(ctx->fs, pctx->ino,
3432 &sz);
3433 ctx->fs->flags = (flags &
3434 EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3435 (ctx->fs->flags &
3436 ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3437 if (err || sz != inode->i_size) {
3438 bad_size = 7;
3439 pctx->num = sz;
3440 }
3441 } else if (inode->i_size & (fs->blocksize - 1))
3442 bad_size = 5;
3443 else if (nblock > (pb.last_block + 1))
3444 bad_size = 1;
3445 else if (nblock < (pb.last_block + 1)) {
3446 if (((pb.last_block + 1) - nblock) >
3447 fs->super->s_prealloc_dir_blocks)
3448 bad_size = 2;
3449 }
3450 } else {
3451 size = EXT2_I_SIZE(inode);
3452 if ((pb.last_init_lblock >= 0) &&
3453 /* Do not allow initialized allocated blocks past i_size*/
3454 (size < (__u64)pb.last_init_lblock * fs->blocksize) &&
3455 !(inode->i_flags & EXT4_VERITY_FL))
3456 bad_size = 3;
3457 else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
3458 size > ext2_max_sizes[fs->super->s_log_block_size])
3459 /* too big for a direct/indirect-mapped file */
3460 bad_size = 4;
3461 else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
3462 size >
3463 ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1))
3464 /* too big for an extent-based file - 32bit ee_block */
3465 bad_size = 6;
3466 }
3467 /* i_size for symlinks is checked elsewhere */
3468 if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
3469 /* Did inline_data set pctx->num earlier? */
3470 if (bad_size != 7)
3471 pctx->num = (pb.last_block + 1) * fs->blocksize;
3472 pctx->group = bad_size;
3473 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
3474 if (LINUX_S_ISDIR(inode->i_mode))
3475 pctx->num &= 0xFFFFFFFFULL;
3476 ext2fs_inode_size_set(fs, inode, pctx->num);
3477 if (EXT2_I_SIZE(inode) == 0 &&
3478 (inode->i_flags & EXT4_INLINE_DATA_FL)) {
3479 memset(inode->i_block, 0,
3480 sizeof(inode->i_block));
3481 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
3482 }
3483 dirty_inode++;
3484 }
3485 pctx->num = 0;
3486 }
3487 if (LINUX_S_ISREG(inode->i_mode) &&
3488 ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
3489 ctx->large_files++;
3490 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
3491 ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) ||
3492 (ext2fs_has_feature_huge_file(fs->super) &&
3493 (inode->i_flags & EXT4_HUGE_FILE_FL) &&
3494 (inode->osd2.linux2.l_i_blocks_hi != 0)))) {
3495 pctx->num = pb.num_blocks;
3496 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
3497 inode->i_blocks = pb.num_blocks;
3498 inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32;
3499 dirty_inode++;
3500 }
3501 pctx->num = 0;
3502 }
3503
3504 /*
3505 * The kernel gets mad if we ask it to allocate bigalloc clusters to
3506 * a block mapped file, so rebuild it as an extent file. We can skip
3507 * symlinks because they're never rewritten.
3508 */
3509 if (ext2fs_has_feature_bigalloc(fs->super) &&
3510 (LINUX_S_ISREG(inode->i_mode) || LINUX_S_ISDIR(inode->i_mode)) &&
3511 ext2fs_inode_data_blocks2(fs, inode) > 0 &&
3512 (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INO(fs->super)) &&
3513 !(inode->i_flags & (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)) &&
3514 fix_problem(ctx, PR_1_NO_BIGALLOC_BLOCKMAP_FILES, pctx)) {
3515 pctx->errcode = e2fsck_rebuild_extents_later(ctx, ino);
3516 if (pctx->errcode)
3517 goto out;
3518 }
3519
3520 if (ctx->dirs_to_hash && pb.is_dir &&
3521 !(ctx->lost_and_found && ctx->lost_and_found == ino) &&
3522 !(inode->i_flags & EXT2_INDEX_FL) &&
3523 ((inode->i_size / fs->blocksize) >= 3))
3524 e2fsck_rehash_dir_later(ctx, ino);
3525
3526 out:
3527 if (dirty_inode)
3528 e2fsck_write_inode(ctx, ino, inode, "check_blocks");
3529 }
3530
3531 #if 0
3532 /*
3533 * Helper function called by process block when an illegal block is
3534 * found. It returns a description about why the block is illegal
3535 */
3536 static char *describe_illegal_block(ext2_filsys fs, blk64_t block)
3537 {
3538 blk64_t super;
3539 int i;
3540 static char problem[80];
3541
3542 super = fs->super->s_first_data_block;
3543 strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
3544 if (block < super) {
3545 sprintf(problem, "< FIRSTBLOCK (%u)", super);
3546 return(problem);
3547 } else if (block >= ext2fs_blocks_count(fs->super)) {
3548 sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super));
3549 return(problem);
3550 }
3551 for (i = 0; i < fs->group_desc_count; i++) {
3552 if (block == super) {
3553 sprintf(problem, "is the superblock in group %d", i);
3554 break;
3555 }
3556 if (block > super &&
3557 block <= (super + fs->desc_blocks)) {
3558 sprintf(problem, "is in the group descriptors "
3559 "of group %d", i);
3560 break;
3561 }
3562 if (block == ext2fs_block_bitmap_loc(fs, i)) {
3563 sprintf(problem, "is the block bitmap of group %d", i);
3564 break;
3565 }
3566 if (block == ext2fs_inode_bitmap_loc(fs, i)) {
3567 sprintf(problem, "is the inode bitmap of group %d", i);
3568 break;
3569 }
3570 if (block >= ext2fs_inode_table_loc(fs, i) &&
3571 (block < ext2fs_inode_table_loc(fs, i)
3572 + fs->inode_blocks_per_group)) {
3573 sprintf(problem, "is in the inode table of group %d",
3574 i);
3575 break;
3576 }
3577 super += fs->super->s_blocks_per_group;
3578 }
3579 return(problem);
3580 }
3581 #endif
3582
3583 /*
3584 * This is a helper function for check_blocks().
3585 */
3586 static int process_block(ext2_filsys fs,
3587 blk64_t *block_nr,
3588 e2_blkcnt_t blockcnt,
3589 blk64_t ref_block EXT2FS_ATTR((unused)),
3590 int ref_offset EXT2FS_ATTR((unused)),
3591 void *priv_data)
3592 {
3593 struct process_block_struct *p;
3594 struct problem_context *pctx;
3595 blk64_t blk = *block_nr;
3596 int ret_code = 0;
3597 problem_t problem = 0;
3598 e2fsck_t ctx;
3599
3600 p = (struct process_block_struct *) priv_data;
3601 pctx = p->pctx;
3602 ctx = p->ctx;
3603
3604 /*
3605 * For a directory, add logical block zero for processing even if it's
3606 * not mapped or we'll be perennially stuck with broken "." and ".."
3607 * entries.
3608 */
3609 if (p->is_dir && blockcnt == 0 && blk == 0) {
3610 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino, 0, 0);
3611 if (pctx->errcode) {
3612 pctx->blk = blk;
3613 pctx->num = blockcnt;
3614 goto failed_add_dir_block;
3615 }
3616 p->last_db_block++;
3617 }
3618
3619 if (blk == 0)
3620 return 0;
3621
3622 #if 0
3623 printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
3624 blockcnt);
3625 #endif
3626
3627 /*
3628 * Simplistic fragmentation check. We merely require that the
3629 * file be contiguous. (Which can never be true for really
3630 * big files that are greater than a block group.)
3631 */
3632 if (p->previous_block && p->ino != EXT2_RESIZE_INO) {
3633 if (p->previous_block+1 != blk) {
3634 if (ctx->options & E2F_OPT_FRAGCHECK) {
3635 char type = '?';
3636
3637 if (p->is_dir)
3638 type = 'd';
3639 else if (p->is_reg)
3640 type = 'f';
3641
3642 printf(_("%6lu(%c): expecting %6lu "
3643 "got phys %6lu (blkcnt %lld)\n"),
3644 (unsigned long) pctx->ino, type,
3645 (unsigned long) p->previous_block+1,
3646 (unsigned long) blk,
3647 blockcnt);
3648 }
3649 p->fragmented = 1;
3650 }
3651 }
3652
3653 if (p->is_dir && !ext2fs_has_feature_largedir(fs->super) &&
3654 blockcnt > (1 << (21 - fs->super->s_log_block_size)))
3655 problem = PR_1_TOOBIG_DIR;
3656 if (p->is_dir && p->num_blocks + 1 >= p->max_blocks)
3657 problem = PR_1_TOOBIG_DIR;
3658 if (p->is_reg && p->num_blocks + 1 >= p->max_blocks)
3659 problem = PR_1_TOOBIG_REG;
3660 if (!p->is_dir && !p->is_reg && blockcnt > 0)
3661 problem = PR_1_TOOBIG_SYMLINK;
3662
3663 if (blk < fs->super->s_first_data_block ||
3664 blk >= ext2fs_blocks_count(fs->super))
3665 problem = PR_1_ILLEGAL_BLOCK_NUM;
3666
3667 /*
3668 * If this IND/DIND/TIND block is squatting atop some critical metadata
3669 * (group descriptors, superblock, bitmap, inode table), any write to
3670 * "fix" mapping problems will destroy the metadata. We'll let pass 1b
3671 * fix that and restart fsck.
3672 */
3673 if (blockcnt < 0 &&
3674 p->ino != EXT2_RESIZE_INO &&
3675 blk < ctx->fs->super->s_blocks_count &&
3676 ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk)) {
3677 pctx->blk = blk;
3678 fix_problem(ctx, PR_1_CRITICAL_METADATA_COLLISION, pctx);
3679 if ((ctx->options & E2F_OPT_NO) == 0)
3680 ctx->flags |= E2F_FLAG_RESTART_LATER;
3681 }
3682
3683 if (problem) {
3684 p->num_illegal_blocks++;
3685 /*
3686 * A bit of subterfuge here -- we're trying to fix a block
3687 * mapping, but the IND/DIND/TIND block could have collided
3688 * with some critical metadata. So, fix the in-core mapping so
3689 * iterate won't go insane, but return 0 instead of
3690 * BLOCK_CHANGED so that it won't write the remapping out to
3691 * our multiply linked block.
3692 *
3693 * Even if we previously determined that an *IND block
3694 * conflicts with critical metadata, we must still try to
3695 * iterate the *IND block as if it is an *IND block to find and
3696 * mark the blocks it points to. Better to be overly cautious
3697 * with the used_blocks map so that we don't move the *IND
3698 * block to a block that's really in use!
3699 */
3700 if (p->ino != EXT2_RESIZE_INO &&
3701 ref_block != 0 &&
3702 ext2fs_test_block_bitmap2(ctx->block_metadata_map,
3703 ref_block)) {
3704 *block_nr = 0;
3705 return 0;
3706 }
3707 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
3708 if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
3709 p->clear = 1;
3710 return BLOCK_ABORT;
3711 }
3712 if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
3713 p->suppress = 1;
3714 set_latch_flags(PR_LATCH_BLOCK,
3715 PRL_SUPPRESS, 0);
3716 }
3717 }
3718 pctx->blk = blk;
3719 pctx->blkcount = blockcnt;
3720 if (fix_problem(ctx, problem, pctx)) {
3721 blk = *block_nr = 0;
3722 ret_code = BLOCK_CHANGED;
3723 p->inode_modified = 1;
3724 /*
3725 * If the directory block is too big and is beyond the
3726 * end of the FS, don't bother trying to add it for
3727 * processing -- the kernel would never have created a
3728 * directory this large, and we risk an ENOMEM abort.
3729 * In any case, the toobig handler for extent-based
3730 * directories also doesn't feed toobig blocks to
3731 * pass 2.
3732 */
3733 if (problem == PR_1_TOOBIG_DIR)
3734 return ret_code;
3735 goto mark_dir;
3736 } else
3737 return 0;
3738 }
3739
3740 if (p->ino == EXT2_RESIZE_INO) {
3741 /*
3742 * The resize inode has already be sanity checked
3743 * during pass #0 (the superblock checks). All we
3744 * have to do is mark the double indirect block as
3745 * being in use; all of the other blocks are handled
3746 * by mark_table_blocks()).
3747 */
3748 if (blockcnt == BLOCK_COUNT_DIND)
3749 mark_block_used(ctx, blk);
3750 p->num_blocks++;
3751 } else if (!(ctx->fs->cluster_ratio_bits &&
3752 p->previous_block &&
3753 (EXT2FS_B2C(ctx->fs, blk) ==
3754 EXT2FS_B2C(ctx->fs, p->previous_block)) &&
3755 (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
3756 ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
3757 mark_block_used(ctx, blk);
3758 p->num_blocks++;
3759 } else if (has_unaligned_cluster_map(ctx, p->previous_block,
3760 p->last_block, blk, blockcnt)) {
3761 pctx->blk = blockcnt;
3762 pctx->blk2 = blk;
3763 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
3764 mark_block_used(ctx, blk);
3765 mark_block_used(ctx, blk);
3766 }
3767 if (blockcnt >= 0)
3768 p->last_block = blockcnt;
3769 p->previous_block = blk;
3770 mark_dir:
3771 if (p->is_dir && (blockcnt >= 0)) {
3772 while (++p->last_db_block < blockcnt) {
3773 pctx->errcode = ext2fs_add_dir_block2(fs->dblist,
3774 p->ino, 0,
3775 p->last_db_block);
3776 if (pctx->errcode) {
3777 pctx->blk = 0;
3778 pctx->num = p->last_db_block;
3779 goto failed_add_dir_block;
3780 }
3781 }
3782 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino,
3783 blk, blockcnt);
3784 if (pctx->errcode) {
3785 pctx->blk = blk;
3786 pctx->num = blockcnt;
3787 failed_add_dir_block:
3788 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3789 /* Should never get here */
3790 ctx->flags |= E2F_FLAG_ABORT;
3791 return BLOCK_ABORT;
3792 }
3793 }
3794 return ret_code;
3795 }
3796
3797 static int process_bad_block(ext2_filsys fs,
3798 blk64_t *block_nr,
3799 e2_blkcnt_t blockcnt,
3800 blk64_t ref_block EXT2FS_ATTR((unused)),
3801 int ref_offset EXT2FS_ATTR((unused)),
3802 void *priv_data)
3803 {
3804 struct process_block_struct *p;
3805 blk64_t blk = *block_nr;
3806 blk64_t first_block;
3807 dgrp_t i;
3808 struct problem_context *pctx;
3809 e2fsck_t ctx;
3810
3811 if (!blk)
3812 return 0;
3813
3814 p = (struct process_block_struct *) priv_data;
3815 ctx = p->ctx;
3816 pctx = p->pctx;
3817
3818 pctx->ino = EXT2_BAD_INO;
3819 pctx->blk = blk;
3820 pctx->blkcount = blockcnt;
3821
3822 if ((blk < fs->super->s_first_data_block) ||
3823 (blk >= ext2fs_blocks_count(fs->super))) {
3824 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
3825 *block_nr = 0;
3826 return BLOCK_CHANGED;
3827 } else
3828 return 0;
3829 }
3830
3831 if (blockcnt < 0) {
3832 if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) {
3833 p->bbcheck = 1;
3834 if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
3835 *block_nr = 0;
3836 return BLOCK_CHANGED;
3837 }
3838 } else if (ext2fs_test_block_bitmap2(ctx->block_found_map,
3839 blk)) {
3840 p->bbcheck = 1;
3841 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
3842 pctx)) {
3843 *block_nr = 0;
3844 return BLOCK_CHANGED;
3845 }
3846 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3847 return BLOCK_ABORT;
3848 } else
3849 mark_block_used(ctx, blk);
3850 return 0;
3851 }
3852 #if 0
3853 printf ("DEBUG: Marking %u as bad.\n", blk);
3854 #endif
3855 ctx->fs_badblocks_count++;
3856 /*
3857 * If the block is not used, then mark it as used and return.
3858 * If it is already marked as found, this must mean that
3859 * there's an overlap between the filesystem table blocks
3860 * (bitmaps and inode table) and the bad block list.
3861 */
3862 if (!ext2fs_test_block_bitmap2(ctx->block_found_map, blk)) {
3863 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
3864 return 0;
3865 }
3866 /*
3867 * Try to find the where the filesystem block was used...
3868 */
3869 first_block = fs->super->s_first_data_block;
3870
3871 for (i = 0; i < fs->group_desc_count; i++ ) {
3872 pctx->group = i;
3873 pctx->blk = blk;
3874 if (!ext2fs_bg_has_super(fs, i))
3875 goto skip_super;
3876 if (blk == first_block) {
3877 if (i == 0) {
3878 if (fix_problem(ctx,
3879 PR_1_BAD_PRIMARY_SUPERBLOCK,
3880 pctx)) {
3881 *block_nr = 0;
3882 return BLOCK_CHANGED;
3883 }
3884 return 0;
3885 }
3886 fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
3887 return 0;
3888 }
3889 if ((blk > first_block) &&
3890 (blk <= first_block + fs->desc_blocks)) {
3891 if (i == 0) {
3892 pctx->blk = *block_nr;
3893 if (fix_problem(ctx,
3894 PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
3895 *block_nr = 0;
3896 return BLOCK_CHANGED;
3897 }
3898 return 0;
3899 }
3900 fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
3901 return 0;
3902 }
3903 skip_super:
3904 if (blk == ext2fs_block_bitmap_loc(fs, i)) {
3905 if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
3906 ctx->invalid_block_bitmap_flag[i]++;
3907 ctx->invalid_bitmaps++;
3908 }
3909 return 0;
3910 }
3911 if (blk == ext2fs_inode_bitmap_loc(fs, i)) {
3912 if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
3913 ctx->invalid_inode_bitmap_flag[i]++;
3914 ctx->invalid_bitmaps++;
3915 }
3916 return 0;
3917 }
3918 if ((blk >= ext2fs_inode_table_loc(fs, i)) &&
3919 (blk < (ext2fs_inode_table_loc(fs, i) +
3920 fs->inode_blocks_per_group))) {
3921 /*
3922 * If there are bad blocks in the inode table,
3923 * the inode scan code will try to do
3924 * something reasonable automatically.
3925 */
3926 return 0;
3927 }
3928 first_block += fs->super->s_blocks_per_group;
3929 }
3930 /*
3931 * If we've gotten to this point, then the only
3932 * possibility is that the bad block inode meta data
3933 * is using a bad block.
3934 */
3935 if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
3936 (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
3937 (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
3938 p->bbcheck = 1;
3939 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
3940 *block_nr = 0;
3941 return BLOCK_CHANGED;
3942 }
3943 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3944 return BLOCK_ABORT;
3945 return 0;
3946 }
3947
3948 pctx->group = -1;
3949
3950 /* Warn user that the block wasn't claimed */
3951 fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
3952
3953 return 0;
3954 }
3955
3956 static void new_table_block(e2fsck_t ctx, blk64_t first_block, dgrp_t group,
3957 const char *name, int num, blk64_t *new_block)
3958 {
3959 ext2_filsys fs = ctx->fs;
3960 dgrp_t last_grp;
3961 blk64_t old_block = *new_block;
3962 blk64_t last_block;
3963 dgrp_t flexbg;
3964 unsigned flexbg_size;
3965 int i, is_flexbg;
3966 char *buf;
3967 struct problem_context pctx;
3968
3969 clear_problem_context(&pctx);
3970
3971 pctx.group = group;
3972 pctx.blk = old_block;
3973 pctx.str = name;
3974
3975 /*
3976 * For flex_bg filesystems, first try to allocate the metadata
3977 * within the flex_bg, and if that fails then try finding the
3978 * space anywhere in the filesystem.
3979 */
3980 is_flexbg = ext2fs_has_feature_flex_bg(fs->super);
3981 if (is_flexbg) {
3982 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
3983 flexbg = group / flexbg_size;
3984 first_block = ext2fs_group_first_block2(fs,
3985 flexbg_size * flexbg);
3986 last_grp = group | (flexbg_size - 1);
3987 if (last_grp >= fs->group_desc_count)
3988 last_grp = fs->group_desc_count - 1;
3989 last_block = ext2fs_group_last_block2(fs, last_grp);
3990 } else
3991 last_block = ext2fs_group_last_block2(fs, group);
3992 pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block,
3993 num, ctx->block_found_map,
3994 new_block);
3995 if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL))
3996 pctx.errcode = ext2fs_get_free_blocks2(fs,
3997 fs->super->s_first_data_block,
3998 ext2fs_blocks_count(fs->super),
3999 num, ctx->block_found_map, new_block);
4000 if (pctx.errcode) {
4001 pctx.num = num;
4002 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
4003 ext2fs_unmark_valid(fs);
4004 ctx->flags |= E2F_FLAG_ABORT;
4005 return;
4006 }
4007 pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
4008 if (pctx.errcode) {
4009 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
4010 ext2fs_unmark_valid(fs);
4011 ctx->flags |= E2F_FLAG_ABORT;
4012 return;
4013 }
4014 ext2fs_mark_super_dirty(fs);
4015 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
4016 pctx.blk2 = *new_block;
4017 fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
4018 PR_1_RELOC_TO), &pctx);
4019 pctx.blk2 = 0;
4020 for (i = 0; i < num; i++) {
4021 pctx.blk = i;
4022 ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i);
4023 if (old_block) {
4024 pctx.errcode = io_channel_read_blk64(fs->io,
4025 old_block + i, 1, buf);
4026 if (pctx.errcode)
4027 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
4028 pctx.blk = (*new_block) + i;
4029 pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk,
4030 1, buf);
4031 } else {
4032 pctx.blk = (*new_block) + i;
4033 pctx.errcode = ext2fs_zero_blocks2(fs, pctx.blk, 1,
4034 NULL, NULL);
4035 }
4036
4037 if (pctx.errcode)
4038 fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
4039 }
4040 ext2fs_free_mem(&buf);
4041 }
4042
4043 /*
4044 * This routine gets called at the end of pass 1 if bad blocks are
4045 * detected in the superblock, group descriptors, inode_bitmaps, or
4046 * block bitmaps. At this point, all of the blocks have been mapped
4047 * out, so we can try to allocate new block(s) to replace the bad
4048 * blocks.
4049 */
4050 static void handle_fs_bad_blocks(e2fsck_t ctx)
4051 {
4052 ext2_filsys fs = ctx->fs;
4053 dgrp_t i;
4054 blk64_t first_block;
4055 blk64_t new_blk;
4056
4057 for (i = 0; i < fs->group_desc_count; i++) {
4058 first_block = ext2fs_group_first_block2(fs, i);
4059
4060 if (ctx->invalid_block_bitmap_flag[i]) {
4061 new_blk = ext2fs_block_bitmap_loc(fs, i);
4062 new_table_block(ctx, first_block, i, _("block bitmap"),
4063 1, &new_blk);
4064 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
4065 }
4066 if (ctx->invalid_inode_bitmap_flag[i]) {
4067 new_blk = ext2fs_inode_bitmap_loc(fs, i);
4068 new_table_block(ctx, first_block, i, _("inode bitmap"),
4069 1, &new_blk);
4070 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
4071 }
4072 if (ctx->invalid_inode_table_flag[i]) {
4073 new_blk = ext2fs_inode_table_loc(fs, i);
4074 new_table_block(ctx, first_block, i, _("inode table"),
4075 fs->inode_blocks_per_group,
4076 &new_blk);
4077 ext2fs_inode_table_loc_set(fs, i, new_blk);
4078 ctx->flags |= E2F_FLAG_RESTART;
4079 }
4080 }
4081 ctx->invalid_bitmaps = 0;
4082 }
4083
4084 /*
4085 * This routine marks all blocks which are used by the superblock,
4086 * group descriptors, inode bitmaps, and block bitmaps.
4087 */
4088 static void mark_table_blocks(e2fsck_t ctx)
4089 {
4090 ext2_filsys fs = ctx->fs;
4091 blk64_t b;
4092 dgrp_t i;
4093 unsigned int j;
4094 struct problem_context pctx;
4095
4096 clear_problem_context(&pctx);
4097
4098 for (i = 0; i < fs->group_desc_count; i++) {
4099 pctx.group = i;
4100
4101 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
4102 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_metadata_map);
4103
4104 /*
4105 * Mark the blocks used for the inode table
4106 */
4107 if (ext2fs_inode_table_loc(fs, i)) {
4108 for (j = 0, b = ext2fs_inode_table_loc(fs, i);
4109 j < fs->inode_blocks_per_group;
4110 j++, b++) {
4111 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4112 b)) {
4113 pctx.blk = b;
4114 if (!ctx->invalid_inode_table_flag[i] &&
4115 fix_problem(ctx,
4116 PR_1_ITABLE_CONFLICT, &pctx)) {
4117 ctx->invalid_inode_table_flag[i]++;
4118 ctx->invalid_bitmaps++;
4119 }
4120 } else {
4121 ext2fs_mark_block_bitmap2(
4122 ctx->block_found_map, b);
4123 ext2fs_mark_block_bitmap2(
4124 ctx->block_metadata_map, b);
4125 }
4126 }
4127 }
4128
4129 /*
4130 * Mark block used for the block bitmap
4131 */
4132 if (ext2fs_block_bitmap_loc(fs, i)) {
4133 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4134 ext2fs_block_bitmap_loc(fs, i))) {
4135 pctx.blk = ext2fs_block_bitmap_loc(fs, i);
4136 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
4137 ctx->invalid_block_bitmap_flag[i]++;
4138 ctx->invalid_bitmaps++;
4139 }
4140 } else {
4141 ext2fs_mark_block_bitmap2(ctx->block_found_map,
4142 ext2fs_block_bitmap_loc(fs, i));
4143 ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
4144 ext2fs_block_bitmap_loc(fs, i));
4145 }
4146 }
4147 /*
4148 * Mark block used for the inode bitmap
4149 */
4150 if (ext2fs_inode_bitmap_loc(fs, i)) {
4151 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4152 ext2fs_inode_bitmap_loc(fs, i))) {
4153 pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
4154 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
4155 ctx->invalid_inode_bitmap_flag[i]++;
4156 ctx->invalid_bitmaps++;
4157 }
4158 } else {
4159 ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
4160 ext2fs_inode_bitmap_loc(fs, i));
4161 ext2fs_mark_block_bitmap2(ctx->block_found_map,
4162 ext2fs_inode_bitmap_loc(fs, i));
4163 }
4164 }
4165 }
4166 }
4167
4168 /*
4169 * These subroutines short circuits ext2fs_get_blocks and
4170 * ext2fs_check_directory; we use them since we already have the inode
4171 * structure, so there's no point in letting the ext2fs library read
4172 * the inode again.
4173 */
4174 static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
4175 blk_t *blocks)
4176 {
4177 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4178 int i;
4179
4180 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4181 return EXT2_ET_CALLBACK_NOTHANDLED;
4182
4183 for (i=0; i < EXT2_N_BLOCKS; i++)
4184 blocks[i] = ctx->stashed_inode->i_block[i];
4185 return 0;
4186 }
4187
4188 static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
4189 struct ext2_inode *inode)
4190 {
4191 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4192
4193 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4194 return EXT2_ET_CALLBACK_NOTHANDLED;
4195 *inode = *ctx->stashed_inode;
4196 return 0;
4197 }
4198
4199 static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
4200 struct ext2_inode *inode)
4201 {
4202 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4203
4204 if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
4205 (inode != ctx->stashed_inode))
4206 *ctx->stashed_inode = *inode;
4207 return EXT2_ET_CALLBACK_NOTHANDLED;
4208 }
4209
4210 static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
4211 {
4212 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4213
4214 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4215 return EXT2_ET_CALLBACK_NOTHANDLED;
4216
4217 if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
4218 return EXT2_ET_NO_DIRECTORY;
4219 return 0;
4220 }
4221
4222 static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal,
4223 blk64_t *ret)
4224 {
4225 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4226 errcode_t retval;
4227 blk64_t new_block;
4228
4229 if (ctx->block_found_map) {
4230 retval = ext2fs_new_block2(fs, goal, ctx->block_found_map,
4231 &new_block);
4232 if (retval)
4233 return retval;
4234 if (fs->block_map) {
4235 ext2fs_mark_block_bitmap2(fs->block_map, new_block);
4236 ext2fs_mark_bb_dirty(fs);
4237 }
4238 } else {
4239 if (!fs->block_map) {
4240 retval = ext2fs_read_block_bitmap(fs);
4241 if (retval)
4242 return retval;
4243 }
4244
4245 retval = ext2fs_new_block2(fs, goal, fs->block_map, &new_block);
4246 if (retval)
4247 return retval;
4248 }
4249
4250 *ret = new_block;
4251 return (0);
4252 }
4253
4254 static errcode_t e2fsck_new_range(ext2_filsys fs, int flags, blk64_t goal,
4255 blk64_t len, blk64_t *pblk, blk64_t *plen)
4256 {
4257 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4258 errcode_t retval;
4259
4260 if (ctx->block_found_map)
4261 return ext2fs_new_range(fs, flags, goal, len,
4262 ctx->block_found_map, pblk, plen);
4263
4264 if (!fs->block_map) {
4265 retval = ext2fs_read_block_bitmap(fs);
4266 if (retval)
4267 return retval;
4268 }
4269
4270 return ext2fs_new_range(fs, flags, goal, len, fs->block_map,
4271 pblk, plen);
4272 }
4273
4274 static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
4275 {
4276 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4277
4278 /* Never free a critical metadata block */
4279 if (ctx->block_found_map &&
4280 ctx->block_metadata_map &&
4281 inuse < 0 &&
4282 ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk))
4283 return;
4284
4285 if (ctx->block_found_map) {
4286 if (inuse > 0)
4287 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
4288 else
4289 ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk);
4290 }
4291 }
4292
4293 static void e2fsck_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
4294 blk_t num, int inuse)
4295 {
4296 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4297
4298 /* Never free a critical metadata block */
4299 if (ctx->block_found_map &&
4300 ctx->block_metadata_map &&
4301 inuse < 0 &&
4302 ext2fs_test_block_bitmap_range2(ctx->block_metadata_map, blk, num))
4303 return;
4304
4305 if (ctx->block_found_map) {
4306 if (inuse > 0)
4307 ext2fs_mark_block_bitmap_range2(ctx->block_found_map,
4308 blk, num);
4309 else
4310 ext2fs_unmark_block_bitmap_range2(ctx->block_found_map,
4311 blk, num);
4312 }
4313 }
4314
4315 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts)
4316 {
4317 ext2_filsys fs = ctx->fs;
4318
4319 if (use_shortcuts) {
4320 fs->get_blocks = pass1_get_blocks;
4321 fs->check_directory = pass1_check_directory;
4322 fs->read_inode = pass1_read_inode;
4323 fs->write_inode = pass1_write_inode;
4324 ctx->stashed_ino = 0;
4325 } else {
4326 fs->get_blocks = 0;
4327 fs->check_directory = 0;
4328 fs->read_inode = 0;
4329 fs->write_inode = 0;
4330 }
4331 }
4332
4333 void e2fsck_intercept_block_allocations(e2fsck_t ctx)
4334 {
4335 ext2fs_set_alloc_block_callback(ctx->fs, e2fsck_get_alloc_block, 0);
4336 ext2fs_set_block_alloc_stats_callback(ctx->fs,
4337 e2fsck_block_alloc_stats, 0);
4338 ext2fs_set_new_range_callback(ctx->fs, e2fsck_new_range, NULL);
4339 ext2fs_set_block_alloc_stats_range_callback(ctx->fs,
4340 e2fsck_block_alloc_stats_range, NULL);
4341 }
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