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libext2fs: support encoding when calculating dx hashes
[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 < fs->super->s_inodes_count) ||
1344 (fs->super->s_mtime < fs->super->s_inodes_count) ||
1345 (fs->super->s_mkfs_time &&
1346 fs->super->s_mkfs_time < fs->super->s_inodes_count))
1347 low_dtime_check = 0;
1348
1349 if (ext2fs_has_feature_mmp(fs->super) &&
1350 fs->super->s_mmp_block > fs->super->s_first_data_block &&
1351 fs->super->s_mmp_block < ext2fs_blocks_count(fs->super))
1352 ext2fs_mark_block_bitmap2(ctx->block_found_map,
1353 fs->super->s_mmp_block);
1354
1355 /* Set up ctx->lost_and_found if possible */
1356 (void) e2fsck_get_lost_and_found(ctx, 0);
1357
1358 while (1) {
1359 if (ino % (fs->super->s_inodes_per_group * 4) == 1) {
1360 if (e2fsck_mmp_update(fs))
1361 fatal_error(ctx, 0);
1362 }
1363 old_op = ehandler_operation(_("getting next inode from scan"));
1364 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
1365 inode, inode_size);
1366 if (ino > ino_threshold)
1367 pass1_readahead(ctx, &ra_group, &ino_threshold);
1368 ehandler_operation(old_op);
1369 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1370 goto endit;
1371 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
1372 /*
1373 * If badblocks says badblocks is bad, offer to clear
1374 * the list, update the in-core bb list, and restart
1375 * the inode scan.
1376 */
1377 if (ino == EXT2_BAD_INO &&
1378 fix_problem(ctx, PR_1_BADBLOCKS_IN_BADBLOCKS,
1379 &pctx)) {
1380 errcode_t err;
1381
1382 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1383 ext2fs_badblocks_list_free(ctx->fs->badblocks);
1384 ctx->fs->badblocks = NULL;
1385 err = ext2fs_read_bb_inode(ctx->fs,
1386 &ctx->fs->badblocks);
1387 if (err) {
1388 fix_problem(ctx, PR_1_ISCAN_ERROR,
1389 &pctx);
1390 ctx->flags |= E2F_FLAG_ABORT;
1391 goto endit;
1392 }
1393 err = ext2fs_inode_scan_goto_blockgroup(scan,
1394 0);
1395 if (err) {
1396 fix_problem(ctx, PR_1_ISCAN_ERROR,
1397 &pctx);
1398 ctx->flags |= E2F_FLAG_ABORT;
1399 goto endit;
1400 }
1401 continue;
1402 }
1403 if (!ctx->inode_bb_map)
1404 alloc_bb_map(ctx);
1405 ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino);
1406 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1407 continue;
1408 }
1409 if (pctx.errcode &&
1410 pctx.errcode != EXT2_ET_INODE_CSUM_INVALID &&
1411 pctx.errcode != EXT2_ET_INODE_IS_GARBAGE) {
1412 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1413 ctx->flags |= E2F_FLAG_ABORT;
1414 goto endit;
1415 }
1416 if (!ino)
1417 break;
1418 pctx.ino = ino;
1419 pctx.inode = inode;
1420 ctx->stashed_ino = ino;
1421
1422 /* Clear trashed inode? */
1423 if (pctx.errcode == EXT2_ET_INODE_IS_GARBAGE &&
1424 inode->i_links_count > 0 &&
1425 fix_problem(ctx, PR_1_INODE_IS_GARBAGE, &pctx)) {
1426 pctx.errcode = 0;
1427 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1428 }
1429 failed_csum = pctx.errcode != 0;
1430
1431 /*
1432 * Check for inodes who might have been part of the
1433 * orphaned list linked list. They should have gotten
1434 * dealt with by now, unless the list had somehow been
1435 * corrupted.
1436 *
1437 * FIXME: In the future, inodes which are still in use
1438 * (and which are therefore) pending truncation should
1439 * be handled specially. Right now we just clear the
1440 * dtime field, and the normal e2fsck handling of
1441 * inodes where i_size and the inode blocks are
1442 * inconsistent is to fix i_size, instead of releasing
1443 * the extra blocks. This won't catch the inodes that
1444 * was at the end of the orphan list, but it's better
1445 * than nothing. The right answer is that there
1446 * shouldn't be any bugs in the orphan list handling. :-)
1447 */
1448 if (inode->i_dtime && low_dtime_check &&
1449 inode->i_dtime < ctx->fs->super->s_inodes_count) {
1450 if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
1451 inode->i_dtime = inode->i_links_count ?
1452 0 : ctx->now;
1453 e2fsck_write_inode(ctx, ino, inode,
1454 "pass1");
1455 failed_csum = 0;
1456 }
1457 }
1458
1459 if (inode->i_links_count) {
1460 pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
1461 ino, inode->i_links_count);
1462 if (pctx.errcode) {
1463 pctx.num = inode->i_links_count;
1464 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
1465 ctx->flags |= E2F_FLAG_ABORT;
1466 goto endit;
1467 }
1468 } else if ((ino >= EXT2_FIRST_INODE(fs->super)) &&
1469 !quota_inum_is_reserved(fs, ino)) {
1470 if (!inode->i_dtime && inode->i_mode) {
1471 if (fix_problem(ctx,
1472 PR_1_ZERO_DTIME, &pctx)) {
1473 inode->i_dtime = ctx->now;
1474 e2fsck_write_inode(ctx, ino, inode,
1475 "pass1");
1476 failed_csum = 0;
1477 }
1478 }
1479 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1480 continue;
1481 }
1482
1483 /* Conflicting inlinedata/extents inode flags? */
1484 if ((inode->i_flags & EXT4_INLINE_DATA_FL) &&
1485 (inode->i_flags & EXT4_EXTENTS_FL)) {
1486 int res = fix_inline_data_extents_file(ctx, ino, inode,
1487 inode_size,
1488 &pctx);
1489 if (res < 0) {
1490 /* skip FINISH_INODE_LOOP */
1491 continue;
1492 }
1493 }
1494
1495 /* Test for incorrect inline_data flags settings. */
1496 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && !inlinedata_fs &&
1497 (ino >= EXT2_FIRST_INODE(fs->super))) {
1498 size_t size = 0;
1499
1500 pctx.errcode = get_inline_data_ea_size(fs, ino, &size);
1501 if (!pctx.errcode &&
1502 fix_problem(ctx, PR_1_INLINE_DATA_FEATURE, &pctx)) {
1503 ext2fs_set_feature_inline_data(sb);
1504 ext2fs_mark_super_dirty(fs);
1505 inlinedata_fs = 1;
1506 } else if (fix_problem(ctx, PR_1_INLINE_DATA_SET, &pctx)) {
1507 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1508 /* skip FINISH_INODE_LOOP */
1509 continue;
1510 }
1511 }
1512
1513 /* Test for inline data flag but no attr */
1514 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && inlinedata_fs &&
1515 (ino >= EXT2_FIRST_INODE(fs->super))) {
1516 size_t size = 0;
1517 errcode_t err;
1518 int flags;
1519
1520 flags = fs->flags;
1521 if (failed_csum)
1522 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
1523 err = get_inline_data_ea_size(fs, ino, &size);
1524 fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
1525 (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
1526
1527 switch (err) {
1528 case 0:
1529 /* Everything is awesome... */
1530 break;
1531 case EXT2_ET_BAD_EA_BLOCK_NUM:
1532 case EXT2_ET_BAD_EA_HASH:
1533 case EXT2_ET_BAD_EA_HEADER:
1534 case EXT2_ET_EA_BAD_NAME_LEN:
1535 case EXT2_ET_EA_BAD_VALUE_SIZE:
1536 case EXT2_ET_EA_KEY_NOT_FOUND:
1537 case EXT2_ET_EA_NO_SPACE:
1538 case EXT2_ET_MISSING_EA_FEATURE:
1539 case EXT2_ET_INLINE_DATA_CANT_ITERATE:
1540 case EXT2_ET_INLINE_DATA_NO_BLOCK:
1541 case EXT2_ET_INLINE_DATA_NO_SPACE:
1542 case EXT2_ET_NO_INLINE_DATA:
1543 case EXT2_ET_EXT_ATTR_CSUM_INVALID:
1544 case EXT2_ET_EA_BAD_VALUE_OFFSET:
1545 case EXT2_ET_EA_INODE_CORRUPTED:
1546 /* broken EA or no system.data EA; truncate */
1547 if (fix_problem(ctx, PR_1_INLINE_DATA_NO_ATTR,
1548 &pctx)) {
1549 err = ext2fs_inode_size_set(fs, inode, 0);
1550 if (err) {
1551 pctx.errcode = err;
1552 ctx->flags |= E2F_FLAG_ABORT;
1553 goto endit;
1554 }
1555 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1556 memset(&inode->i_block, 0,
1557 sizeof(inode->i_block));
1558 e2fsck_write_inode(ctx, ino, inode,
1559 "pass1");
1560 failed_csum = 0;
1561 }
1562 break;
1563 default:
1564 /* Some other kind of non-xattr error? */
1565 pctx.errcode = err;
1566 ctx->flags |= E2F_FLAG_ABORT;
1567 goto endit;
1568 }
1569 }
1570
1571 /*
1572 * Test for incorrect extent flag settings.
1573 *
1574 * On big-endian machines we must be careful:
1575 * When the inode is read, the i_block array is not swapped
1576 * if the extent flag is set. Therefore if we are testing
1577 * for or fixing a wrongly-set flag, we must potentially
1578 * (un)swap before testing, or after fixing.
1579 */
1580
1581 /*
1582 * In this case the extents flag was set when read, so
1583 * extent_header_verify is ok. If the inode is cleared,
1584 * no need to swap... so no extra swapping here.
1585 */
1586 if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs &&
1587 (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1588 (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) {
1589 if ((ext2fs_extent_header_verify(inode->i_block,
1590 sizeof(inode->i_block)) == 0) &&
1591 fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) {
1592 ext2fs_set_feature_extents(sb);
1593 ext2fs_mark_super_dirty(fs);
1594 extent_fs = 1;
1595 } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) {
1596 clear_inode:
1597 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1598 if (ino == EXT2_BAD_INO)
1599 ext2fs_mark_inode_bitmap2(ctx->inode_used_map,
1600 ino);
1601 /* skip FINISH_INODE_LOOP */
1602 continue;
1603 }
1604 }
1605
1606 /*
1607 * For big-endian machines:
1608 * If the inode didn't have the extents flag set when it
1609 * was read, then the i_blocks array was swapped. To test
1610 * as an extents header, we must swap it back first.
1611 * IF we then set the extents flag, the entire i_block
1612 * array must be un/re-swapped to make it proper extents data.
1613 */
1614 if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) &&
1615 (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1616 (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) &&
1617 (LINUX_S_ISREG(inode->i_mode) ||
1618 LINUX_S_ISDIR(inode->i_mode))) {
1619 void *ehp;
1620 #ifdef WORDS_BIGENDIAN
1621 __u32 tmp_block[EXT2_N_BLOCKS];
1622
1623 for (i = 0; i < EXT2_N_BLOCKS; i++)
1624 tmp_block[i] = ext2fs_swab32(inode->i_block[i]);
1625 ehp = tmp_block;
1626 #else
1627 ehp = inode->i_block;
1628 #endif
1629 if ((ext2fs_extent_header_verify(ehp,
1630 sizeof(inode->i_block)) == 0) &&
1631 (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) {
1632 inode->i_flags |= EXT4_EXTENTS_FL;
1633 #ifdef WORDS_BIGENDIAN
1634 memcpy(inode->i_block, tmp_block,
1635 sizeof(inode->i_block));
1636 #endif
1637 e2fsck_write_inode(ctx, ino, inode, "pass1");
1638 failed_csum = 0;
1639 }
1640 }
1641
1642 if (ino == EXT2_BAD_INO) {
1643 struct process_block_struct pb;
1644
1645 if ((failed_csum || inode->i_mode || inode->i_uid ||
1646 inode->i_gid || inode->i_links_count ||
1647 (inode->i_flags & EXT4_INLINE_DATA_FL) ||
1648 inode->i_file_acl) &&
1649 fix_problem(ctx, PR_1_INVALID_BAD_INODE, &pctx)) {
1650 memset(inode, 0, sizeof(struct ext2_inode));
1651 e2fsck_write_inode(ctx, ino, inode,
1652 "clear bad inode");
1653 failed_csum = 0;
1654 }
1655
1656 pctx.errcode = ext2fs_copy_bitmap(ctx->block_found_map,
1657 &pb.fs_meta_blocks);
1658 if (pctx.errcode) {
1659 pctx.num = 4;
1660 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1661 ctx->flags |= E2F_FLAG_ABORT;
1662 goto endit;
1663 }
1664 pb.ino = EXT2_BAD_INO;
1665 pb.num_blocks = pb.last_block = 0;
1666 pb.last_db_block = -1;
1667 pb.num_illegal_blocks = 0;
1668 pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
1669 pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
1670 pb.inode = inode;
1671 pb.pctx = &pctx;
1672 pb.ctx = ctx;
1673 pctx.errcode = ext2fs_block_iterate3(fs, ino, 0,
1674 block_buf, process_bad_block, &pb);
1675 ext2fs_free_block_bitmap(pb.fs_meta_blocks);
1676 if (pctx.errcode) {
1677 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
1678 ctx->flags |= E2F_FLAG_ABORT;
1679 goto endit;
1680 }
1681 if (pb.bbcheck)
1682 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
1683 ctx->flags |= E2F_FLAG_ABORT;
1684 goto endit;
1685 }
1686 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1687 clear_problem_context(&pctx);
1688 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1689 continue;
1690 } else if (ino == EXT2_ROOT_INO) {
1691 /*
1692 * Make sure the root inode is a directory; if
1693 * not, offer to clear it. It will be
1694 * regenerated in pass #3.
1695 */
1696 if (!LINUX_S_ISDIR(inode->i_mode)) {
1697 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx))
1698 goto clear_inode;
1699 }
1700 /*
1701 * If dtime is set, offer to clear it. mke2fs
1702 * version 0.2b created filesystems with the
1703 * dtime field set for the root and lost+found
1704 * directories. We won't worry about
1705 * /lost+found, since that can be regenerated
1706 * easily. But we will fix the root directory
1707 * as a special case.
1708 */
1709 if (inode->i_dtime && inode->i_links_count) {
1710 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
1711 inode->i_dtime = 0;
1712 e2fsck_write_inode(ctx, ino, inode,
1713 "pass1");
1714 failed_csum = 0;
1715 }
1716 }
1717 } else if (ino == EXT2_JOURNAL_INO) {
1718 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1719 if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
1720 if (!LINUX_S_ISREG(inode->i_mode) &&
1721 fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
1722 &pctx)) {
1723 inode->i_mode = LINUX_S_IFREG;
1724 e2fsck_write_inode(ctx, ino, inode,
1725 "pass1");
1726 failed_csum = 0;
1727 }
1728 check_blocks(ctx, &pctx, block_buf, NULL);
1729 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1730 continue;
1731 }
1732 if ((inode->i_links_count ||
1733 inode->i_blocks || inode->i_block[0]) &&
1734 fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
1735 &pctx)) {
1736 memset(inode, 0, inode_size);
1737 ext2fs_icount_store(ctx->inode_link_info,
1738 ino, 0);
1739 e2fsck_write_inode_full(ctx, ino, inode,
1740 inode_size, "pass1");
1741 failed_csum = 0;
1742 }
1743 } else if (quota_inum_is_reserved(fs, ino)) {
1744 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1745 if (ext2fs_has_feature_quota(fs->super) &&
1746 quota_inum_is_super(fs->super, ino)) {
1747 if (!LINUX_S_ISREG(inode->i_mode) &&
1748 fix_problem(ctx, PR_1_QUOTA_BAD_MODE,
1749 &pctx)) {
1750 inode->i_mode = LINUX_S_IFREG;
1751 e2fsck_write_inode(ctx, ino, inode,
1752 "pass1");
1753 failed_csum = 0;
1754 }
1755 check_blocks(ctx, &pctx, block_buf, NULL);
1756 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1757 continue;
1758 }
1759 if ((inode->i_links_count ||
1760 inode->i_blocks || inode->i_block[0]) &&
1761 fix_problem(ctx, PR_1_QUOTA_INODE_NOT_CLEAR,
1762 &pctx)) {
1763 memset(inode, 0, inode_size);
1764 ext2fs_icount_store(ctx->inode_link_info,
1765 ino, 0);
1766 e2fsck_write_inode_full(ctx, ino, inode,
1767 inode_size, "pass1");
1768 failed_csum = 0;
1769 }
1770 } else if (ino < EXT2_FIRST_INODE(fs->super)) {
1771 problem_t problem = 0;
1772
1773 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1774 if (ino == EXT2_BOOT_LOADER_INO) {
1775 if (LINUX_S_ISDIR(inode->i_mode))
1776 problem = PR_1_RESERVED_BAD_MODE;
1777 } else if (ino == EXT2_RESIZE_INO) {
1778 if (inode->i_mode &&
1779 !LINUX_S_ISREG(inode->i_mode))
1780 problem = PR_1_RESERVED_BAD_MODE;
1781 } else {
1782 if (inode->i_mode != 0)
1783 problem = PR_1_RESERVED_BAD_MODE;
1784 }
1785 if (problem) {
1786 if (fix_problem(ctx, problem, &pctx)) {
1787 inode->i_mode = 0;
1788 e2fsck_write_inode(ctx, ino, inode,
1789 "pass1");
1790 failed_csum = 0;
1791 }
1792 }
1793 check_blocks(ctx, &pctx, block_buf, NULL);
1794 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1795 continue;
1796 }
1797
1798 if (!inode->i_links_count) {
1799 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1800 continue;
1801 }
1802 /*
1803 * n.b. 0.3c ext2fs code didn't clear i_links_count for
1804 * deleted files. Oops.
1805 *
1806 * Since all new ext2 implementations get this right,
1807 * we now assume that the case of non-zero
1808 * i_links_count and non-zero dtime means that we
1809 * should keep the file, not delete it.
1810 *
1811 */
1812 if (inode->i_dtime) {
1813 if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
1814 inode->i_dtime = 0;
1815 e2fsck_write_inode(ctx, ino, inode, "pass1");
1816 failed_csum = 0;
1817 }
1818 }
1819
1820 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1821 switch (fs->super->s_creator_os) {
1822 case EXT2_OS_HURD:
1823 frag = inode->osd2.hurd2.h_i_frag;
1824 fsize = inode->osd2.hurd2.h_i_fsize;
1825 break;
1826 default:
1827 frag = fsize = 0;
1828 }
1829
1830 if (inode->i_faddr || frag || fsize ||
1831 (!ext2fs_has_feature_largedir(fs->super) &&
1832 (LINUX_S_ISDIR(inode->i_mode) && inode->i_size_high)))
1833 mark_inode_bad(ctx, ino);
1834 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
1835 !ext2fs_has_feature_64bit(fs->super) &&
1836 inode->osd2.linux2.l_i_file_acl_high != 0)
1837 mark_inode_bad(ctx, ino);
1838 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
1839 !ext2fs_has_feature_huge_file(fs->super) &&
1840 (inode->osd2.linux2.l_i_blocks_hi != 0))
1841 mark_inode_bad(ctx, ino);
1842 if (inode->i_flags & EXT2_IMAGIC_FL) {
1843 if (imagic_fs) {
1844 if (!ctx->inode_imagic_map)
1845 alloc_imagic_map(ctx);
1846 ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map,
1847 ino);
1848 } else {
1849 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
1850 inode->i_flags &= ~EXT2_IMAGIC_FL;
1851 e2fsck_write_inode(ctx, ino,
1852 inode, "pass1");
1853 failed_csum = 0;
1854 }
1855 }
1856 }
1857
1858 check_inode_extra_space(ctx, &pctx, &ea_ibody_quota);
1859 check_is_really_dir(ctx, &pctx, block_buf);
1860
1861 /*
1862 * ext2fs_inode_has_valid_blocks2 does not actually look
1863 * at i_block[] values, so not endian-sensitive here.
1864 */
1865 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) &&
1866 LINUX_S_ISLNK(inode->i_mode) &&
1867 !ext2fs_inode_has_valid_blocks2(fs, inode) &&
1868 fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) {
1869 inode->i_flags &= ~EXT4_EXTENTS_FL;
1870 e2fsck_write_inode(ctx, ino, inode, "pass1");
1871 failed_csum = 0;
1872 }
1873
1874 if (LINUX_S_ISDIR(inode->i_mode)) {
1875 ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
1876 e2fsck_add_dir_info(ctx, ino, 0);
1877 ctx->fs_directory_count++;
1878 if (inode->i_flags & EXT4_ENCRYPT_FL)
1879 add_encrypted_dir(ctx, ino);
1880 } else if (LINUX_S_ISREG (inode->i_mode)) {
1881 ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino);
1882 ctx->fs_regular_count++;
1883 } else if (LINUX_S_ISCHR (inode->i_mode) &&
1884 e2fsck_pass1_check_device_inode(fs, inode)) {
1885 check_extents_inlinedata(ctx, &pctx);
1886 check_immutable(ctx, &pctx);
1887 check_size(ctx, &pctx);
1888 ctx->fs_chardev_count++;
1889 } else if (LINUX_S_ISBLK (inode->i_mode) &&
1890 e2fsck_pass1_check_device_inode(fs, inode)) {
1891 check_extents_inlinedata(ctx, &pctx);
1892 check_immutable(ctx, &pctx);
1893 check_size(ctx, &pctx);
1894 ctx->fs_blockdev_count++;
1895 } else if (LINUX_S_ISLNK (inode->i_mode) &&
1896 e2fsck_pass1_check_symlink(fs, ino, inode,
1897 block_buf)) {
1898 check_immutable(ctx, &pctx);
1899 ctx->fs_symlinks_count++;
1900 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
1901 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1902 continue;
1903 } else if (ext2fs_is_fast_symlink(inode)) {
1904 ctx->fs_fast_symlinks_count++;
1905 check_blocks(ctx, &pctx, block_buf,
1906 &ea_ibody_quota);
1907 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1908 continue;
1909 }
1910 }
1911 else if (LINUX_S_ISFIFO (inode->i_mode) &&
1912 e2fsck_pass1_check_device_inode(fs, inode)) {
1913 check_extents_inlinedata(ctx, &pctx);
1914 check_immutable(ctx, &pctx);
1915 check_size(ctx, &pctx);
1916 ctx->fs_fifo_count++;
1917 } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
1918 e2fsck_pass1_check_device_inode(fs, inode)) {
1919 check_extents_inlinedata(ctx, &pctx);
1920 check_immutable(ctx, &pctx);
1921 check_size(ctx, &pctx);
1922 ctx->fs_sockets_count++;
1923 } else
1924 mark_inode_bad(ctx, ino);
1925 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1926 !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
1927 if (inode->i_block[EXT2_IND_BLOCK])
1928 ctx->fs_ind_count++;
1929 if (inode->i_block[EXT2_DIND_BLOCK])
1930 ctx->fs_dind_count++;
1931 if (inode->i_block[EXT2_TIND_BLOCK])
1932 ctx->fs_tind_count++;
1933 }
1934 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1935 !(inode->i_flags & EXT4_INLINE_DATA_FL) &&
1936 (inode->i_block[EXT2_IND_BLOCK] ||
1937 inode->i_block[EXT2_DIND_BLOCK] ||
1938 inode->i_block[EXT2_TIND_BLOCK] ||
1939 ext2fs_file_acl_block(fs, inode))) {
1940 struct process_inode_block *itp;
1941
1942 itp = &inodes_to_process[process_inode_count];
1943 itp->ino = ino;
1944 itp->ea_ibody_quota = ea_ibody_quota;
1945 if (inode_size < sizeof(struct ext2_inode_large))
1946 memcpy(&itp->inode, inode, inode_size);
1947 else
1948 memcpy(&itp->inode, inode, sizeof(itp->inode));
1949 process_inode_count++;
1950 } else
1951 check_blocks(ctx, &pctx, block_buf, &ea_ibody_quota);
1952
1953 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1954
1955 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1956 goto endit;
1957
1958 if (process_inode_count >= ctx->process_inode_size) {
1959 process_inodes(ctx, block_buf);
1960
1961 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1962 goto endit;
1963 }
1964 }
1965 process_inodes(ctx, block_buf);
1966 ext2fs_close_inode_scan(scan);
1967 scan = NULL;
1968
1969 reserve_block_for_root_repair(ctx);
1970 reserve_block_for_lnf_repair(ctx);
1971
1972 /*
1973 * If any extended attribute blocks' reference counts need to
1974 * be adjusted, either up (ctx->refcount_extra), or down
1975 * (ctx->refcount), then fix them.
1976 */
1977 if (ctx->refcount) {
1978 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
1979 ea_refcount_free(ctx->refcount);
1980 ctx->refcount = 0;
1981 }
1982 if (ctx->refcount_extra) {
1983 adjust_extattr_refcount(ctx, ctx->refcount_extra,
1984 block_buf, +1);
1985 ea_refcount_free(ctx->refcount_extra);
1986 ctx->refcount_extra = 0;
1987 }
1988
1989 if (ctx->ea_block_quota_blocks) {
1990 ea_refcount_free(ctx->ea_block_quota_blocks);
1991 ctx->ea_block_quota_blocks = 0;
1992 }
1993
1994 if (ctx->ea_block_quota_inodes) {
1995 ea_refcount_free(ctx->ea_block_quota_inodes);
1996 ctx->ea_block_quota_inodes = 0;
1997 }
1998
1999 if (ctx->invalid_bitmaps)
2000 handle_fs_bad_blocks(ctx);
2001
2002 /* We don't need the block_ea_map any more */
2003 if (ctx->block_ea_map) {
2004 ext2fs_free_block_bitmap(ctx->block_ea_map);
2005 ctx->block_ea_map = 0;
2006 }
2007
2008 if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
2009 clear_problem_context(&pctx);
2010 pctx.errcode = ext2fs_create_resize_inode(fs);
2011 if (pctx.errcode) {
2012 if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE,
2013 &pctx)) {
2014 ctx->flags |= E2F_FLAG_ABORT;
2015 goto endit;
2016 }
2017 pctx.errcode = 0;
2018 }
2019 if (!pctx.errcode) {
2020 e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
2021 "recreate inode");
2022 inode->i_mtime = ctx->now;
2023 e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
2024 "recreate inode");
2025 }
2026 ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
2027 }
2028
2029 if (ctx->flags & E2F_FLAG_RESTART) {
2030 /*
2031 * Only the master copy of the superblock and block
2032 * group descriptors are going to be written during a
2033 * restart, so set the superblock to be used to be the
2034 * master superblock.
2035 */
2036 ctx->use_superblock = 0;
2037 unwind_pass1(fs);
2038 goto endit;
2039 }
2040
2041 if (ctx->block_dup_map) {
2042 if (ctx->options & E2F_OPT_PREEN) {
2043 clear_problem_context(&pctx);
2044 fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
2045 }
2046 e2fsck_pass1_dupblocks(ctx, block_buf);
2047 }
2048 ctx->flags |= E2F_FLAG_ALLOC_OK;
2049 ext2fs_free_mem(&inodes_to_process);
2050 endit:
2051 e2fsck_use_inode_shortcuts(ctx, 0);
2052
2053 if (scan)
2054 ext2fs_close_inode_scan(scan);
2055 if (block_buf)
2056 ext2fs_free_mem(&block_buf);
2057 if (inode)
2058 ext2fs_free_mem(&inode);
2059
2060 /*
2061 * The l+f inode may have been cleared, so zap it now and
2062 * later passes will recalculate it if necessary
2063 */
2064 ctx->lost_and_found = 0;
2065
2066 if ((ctx->flags & E2F_FLAG_SIGNAL_MASK) == 0)
2067 print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io);
2068 else
2069 ctx->invalid_bitmaps++;
2070 }
2071 #undef FINISH_INODE_LOOP
2072
2073 /*
2074 * When the inode_scan routines call this callback at the end of the
2075 * glock group, call process_inodes.
2076 */
2077 static errcode_t scan_callback(ext2_filsys fs,
2078 ext2_inode_scan scan EXT2FS_ATTR((unused)),
2079 dgrp_t group, void * priv_data)
2080 {
2081 struct scan_callback_struct *scan_struct;
2082 e2fsck_t ctx;
2083
2084 scan_struct = (struct scan_callback_struct *) priv_data;
2085 ctx = scan_struct->ctx;
2086
2087 process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf);
2088
2089 if (ctx->progress)
2090 if ((ctx->progress)(ctx, 1, group+1,
2091 ctx->fs->group_desc_count))
2092 return EXT2_ET_CANCEL_REQUESTED;
2093
2094 return 0;
2095 }
2096
2097 /*
2098 * Process the inodes in the "inodes to process" list.
2099 */
2100 static void process_inodes(e2fsck_t ctx, char *block_buf)
2101 {
2102 int i;
2103 struct ext2_inode *old_stashed_inode;
2104 ext2_ino_t old_stashed_ino;
2105 const char *old_operation;
2106 char buf[80];
2107 struct problem_context pctx;
2108
2109 #if 0
2110 printf("begin process_inodes: ");
2111 #endif
2112 if (process_inode_count == 0)
2113 return;
2114 old_operation = ehandler_operation(0);
2115 old_stashed_inode = ctx->stashed_inode;
2116 old_stashed_ino = ctx->stashed_ino;
2117 qsort(inodes_to_process, process_inode_count,
2118 sizeof(struct process_inode_block), process_inode_cmp);
2119 clear_problem_context(&pctx);
2120 for (i=0; i < process_inode_count; i++) {
2121 pctx.inode = ctx->stashed_inode =
2122 (struct ext2_inode *) &inodes_to_process[i].inode;
2123 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
2124
2125 #if 0
2126 printf("%u ", pctx.ino);
2127 #endif
2128 sprintf(buf, _("reading indirect blocks of inode %u"),
2129 pctx.ino);
2130 ehandler_operation(buf);
2131 check_blocks(ctx, &pctx, block_buf,
2132 &inodes_to_process[i].ea_ibody_quota);
2133 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2134 break;
2135 }
2136 ctx->stashed_inode = old_stashed_inode;
2137 ctx->stashed_ino = old_stashed_ino;
2138 process_inode_count = 0;
2139 #if 0
2140 printf("end process inodes\n");
2141 #endif
2142 ehandler_operation(old_operation);
2143 }
2144
2145 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
2146 {
2147 const struct process_inode_block *ib_a =
2148 (const struct process_inode_block *) a;
2149 const struct process_inode_block *ib_b =
2150 (const struct process_inode_block *) b;
2151 int ret;
2152
2153 ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
2154 ib_b->inode.i_block[EXT2_IND_BLOCK]);
2155 if (ret == 0)
2156 /*
2157 * We only call process_inodes() for non-extent
2158 * inodes, so it's OK to pass NULL to
2159 * ext2fs_file_acl_block() here.
2160 */
2161 ret = ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_a->inode)) -
2162 ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_b->inode));
2163 if (ret == 0)
2164 ret = ib_a->ino - ib_b->ino;
2165 return ret;
2166 }
2167
2168 /*
2169 * Mark an inode as being bad in some what
2170 */
2171 static void mark_inode_bad(e2fsck_t ctx, ino_t ino)
2172 {
2173 struct problem_context pctx;
2174
2175 if (!ctx->inode_bad_map) {
2176 clear_problem_context(&pctx);
2177
2178 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2179 _("bad inode map"), EXT2FS_BMAP64_RBTREE,
2180 "inode_bad_map", &ctx->inode_bad_map);
2181 if (pctx.errcode) {
2182 pctx.num = 3;
2183 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2184 /* Should never get here */
2185 ctx->flags |= E2F_FLAG_ABORT;
2186 return;
2187 }
2188 }
2189 ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino);
2190 }
2191
2192 static void add_encrypted_dir(e2fsck_t ctx, ino_t ino)
2193 {
2194 struct problem_context pctx;
2195
2196 if (!ctx->encrypted_dirs) {
2197 pctx.errcode = ext2fs_u32_list_create(&ctx->encrypted_dirs, 0);
2198 if (pctx.errcode)
2199 goto error;
2200 }
2201 pctx.errcode = ext2fs_u32_list_add(ctx->encrypted_dirs, ino);
2202 if (pctx.errcode == 0)
2203 return;
2204 error:
2205 fix_problem(ctx, PR_1_ALLOCATE_ENCRYPTED_DIRLIST, &pctx);
2206 /* Should never get here */
2207 ctx->flags |= E2F_FLAG_ABORT;
2208 }
2209
2210 /*
2211 * This procedure will allocate the inode "bb" (badblock) map table
2212 */
2213 static void alloc_bb_map(e2fsck_t ctx)
2214 {
2215 struct problem_context pctx;
2216
2217 clear_problem_context(&pctx);
2218 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2219 _("inode in bad block map"), EXT2FS_BMAP64_RBTREE,
2220 "inode_bb_map", &ctx->inode_bb_map);
2221 if (pctx.errcode) {
2222 pctx.num = 4;
2223 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2224 /* Should never get here */
2225 ctx->flags |= E2F_FLAG_ABORT;
2226 return;
2227 }
2228 }
2229
2230 /*
2231 * This procedure will allocate the inode imagic table
2232 */
2233 static void alloc_imagic_map(e2fsck_t ctx)
2234 {
2235 struct problem_context pctx;
2236
2237 clear_problem_context(&pctx);
2238 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2239 _("imagic inode map"), EXT2FS_BMAP64_RBTREE,
2240 "inode_imagic_map", &ctx->inode_imagic_map);
2241 if (pctx.errcode) {
2242 pctx.num = 5;
2243 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2244 /* Should never get here */
2245 ctx->flags |= E2F_FLAG_ABORT;
2246 return;
2247 }
2248 }
2249
2250 /*
2251 * Marks a block as in use, setting the dup_map if it's been set
2252 * already. Called by process_block and process_bad_block.
2253 *
2254 * WARNING: Assumes checks have already been done to make sure block
2255 * is valid. This is true in both process_block and process_bad_block.
2256 */
2257 static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block)
2258 {
2259 struct problem_context pctx;
2260
2261 clear_problem_context(&pctx);
2262
2263 if (ext2fs_fast_test_block_bitmap2(ctx->block_found_map, block)) {
2264 if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
2265 !(ctx->options & E2F_OPT_UNSHARE_BLOCKS)) {
2266 return;
2267 }
2268 if (!ctx->block_dup_map) {
2269 pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
2270 _("multiply claimed block map"),
2271 EXT2FS_BMAP64_RBTREE, "block_dup_map",
2272 &ctx->block_dup_map);
2273 if (pctx.errcode) {
2274 pctx.num = 3;
2275 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
2276 &pctx);
2277 /* Should never get here */
2278 ctx->flags |= E2F_FLAG_ABORT;
2279 return;
2280 }
2281 }
2282 ext2fs_fast_mark_block_bitmap2(ctx->block_dup_map, block);
2283 } else {
2284 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block);
2285 }
2286 }
2287
2288 /*
2289 * When cluster size is greater than one block, it is caller's responsibility
2290 * to make sure block parameter starts at a cluster boundary.
2291 */
2292 static _INLINE_ void mark_blocks_used(e2fsck_t ctx, blk64_t block,
2293 unsigned int num)
2294 {
2295 if (ext2fs_test_block_bitmap_range2(ctx->block_found_map, block, num))
2296 ext2fs_mark_block_bitmap_range2(ctx->block_found_map, block, num);
2297 else {
2298 unsigned int i;
2299
2300 for (i = 0; i < num; i += EXT2FS_CLUSTER_RATIO(ctx->fs))
2301 mark_block_used(ctx, block + i);
2302 }
2303 }
2304
2305 /*
2306 * Adjust the extended attribute block's reference counts at the end
2307 * of pass 1, either by subtracting out references for EA blocks that
2308 * are still referenced in ctx->refcount, or by adding references for
2309 * EA blocks that had extra references as accounted for in
2310 * ctx->refcount_extra.
2311 */
2312 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
2313 char *block_buf, int adjust_sign)
2314 {
2315 struct ext2_ext_attr_header *header;
2316 struct problem_context pctx;
2317 ext2_filsys fs = ctx->fs;
2318 blk64_t blk;
2319 __u32 should_be;
2320 ea_value_t count;
2321
2322 clear_problem_context(&pctx);
2323
2324 ea_refcount_intr_begin(refcount);
2325 while (1) {
2326 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
2327 break;
2328 pctx.blk = blk;
2329 pctx.errcode = ext2fs_read_ext_attr3(fs, blk, block_buf,
2330 pctx.ino);
2331 if (pctx.errcode) {
2332 fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
2333 return;
2334 }
2335 header = (struct ext2_ext_attr_header *) block_buf;
2336 pctx.blkcount = header->h_refcount;
2337 should_be = header->h_refcount + adjust_sign * (int)count;
2338 pctx.num = should_be;
2339 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
2340 header->h_refcount = should_be;
2341 pctx.errcode = ext2fs_write_ext_attr3(fs, blk,
2342 block_buf,
2343 pctx.ino);
2344 if (pctx.errcode) {
2345 fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT,
2346 &pctx);
2347 continue;
2348 }
2349 }
2350 }
2351 }
2352
2353 /*
2354 * Handle processing the extended attribute blocks
2355 */
2356 static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
2357 char *block_buf, struct ea_quota *ea_block_quota)
2358 {
2359 ext2_filsys fs = ctx->fs;
2360 ext2_ino_t ino = pctx->ino;
2361 struct ext2_inode *inode = pctx->inode;
2362 blk64_t blk;
2363 char * end;
2364 struct ext2_ext_attr_header *header;
2365 struct ext2_ext_attr_entry *first, *entry;
2366 blk64_t quota_blocks = EXT2FS_C2B(fs, 1);
2367 __u64 quota_inodes = 0;
2368 region_t region = 0;
2369 int failed_csum = 0;
2370
2371 ea_block_quota->blocks = 0;
2372 ea_block_quota->inodes = 0;
2373
2374 blk = ext2fs_file_acl_block(fs, inode);
2375 if (blk == 0)
2376 return 0;
2377
2378 /*
2379 * If the Extended attribute flag isn't set, then a non-zero
2380 * file acl means that the inode is corrupted.
2381 *
2382 * Or if the extended attribute block is an invalid block,
2383 * then the inode is also corrupted.
2384 */
2385 if (!ext2fs_has_feature_xattr(fs->super) ||
2386 (blk < fs->super->s_first_data_block) ||
2387 (blk >= ext2fs_blocks_count(fs->super))) {
2388 mark_inode_bad(ctx, ino);
2389 return 0;
2390 }
2391
2392 /* If ea bitmap hasn't been allocated, create it */
2393 if (!ctx->block_ea_map) {
2394 pctx->errcode = e2fsck_allocate_block_bitmap(fs,
2395 _("ext attr block map"),
2396 EXT2FS_BMAP64_RBTREE, "block_ea_map",
2397 &ctx->block_ea_map);
2398 if (pctx->errcode) {
2399 pctx->num = 2;
2400 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
2401 ctx->flags |= E2F_FLAG_ABORT;
2402 return 0;
2403 }
2404 }
2405
2406 /* Create the EA refcount structure if necessary */
2407 if (!ctx->refcount) {
2408 pctx->errcode = ea_refcount_create(0, &ctx->refcount);
2409 if (pctx->errcode) {
2410 pctx->num = 1;
2411 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2412 ctx->flags |= E2F_FLAG_ABORT;
2413 return 0;
2414 }
2415 }
2416
2417 #if 0
2418 /* Debugging text */
2419 printf("Inode %u has EA block %u\n", ino, blk);
2420 #endif
2421
2422 /* Have we seen this EA block before? */
2423 if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) {
2424 ea_block_quota->blocks = EXT2FS_C2B(fs, 1);
2425 ea_block_quota->inodes = 0;
2426
2427 if (ctx->ea_block_quota_blocks) {
2428 ea_refcount_fetch(ctx->ea_block_quota_blocks, blk,
2429 &quota_blocks);
2430 if (quota_blocks)
2431 ea_block_quota->blocks = quota_blocks;
2432 }
2433
2434 if (ctx->ea_block_quota_inodes)
2435 ea_refcount_fetch(ctx->ea_block_quota_inodes, blk,
2436 &ea_block_quota->inodes);
2437
2438 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
2439 return 1;
2440 /* Ooops, this EA was referenced more than it stated */
2441 if (!ctx->refcount_extra) {
2442 pctx->errcode = ea_refcount_create(0,
2443 &ctx->refcount_extra);
2444 if (pctx->errcode) {
2445 pctx->num = 2;
2446 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2447 ctx->flags |= E2F_FLAG_ABORT;
2448 return 0;
2449 }
2450 }
2451 ea_refcount_increment(ctx->refcount_extra, blk, 0);
2452 return 1;
2453 }
2454
2455 /*
2456 * OK, we haven't seen this EA block yet. So we need to
2457 * validate it
2458 */
2459 pctx->blk = blk;
2460 pctx->errcode = ext2fs_read_ext_attr3(fs, blk, block_buf, pctx->ino);
2461 if (pctx->errcode == EXT2_ET_EXT_ATTR_CSUM_INVALID) {
2462 pctx->errcode = 0;
2463 failed_csum = 1;
2464 } else if (pctx->errcode == EXT2_ET_BAD_EA_HEADER)
2465 pctx->errcode = 0;
2466
2467 if (pctx->errcode &&
2468 fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx)) {
2469 pctx->errcode = 0;
2470 goto clear_extattr;
2471 }
2472 header = (struct ext2_ext_attr_header *) block_buf;
2473 pctx->blk = ext2fs_file_acl_block(fs, inode);
2474 if (((ctx->ext_attr_ver == 1) &&
2475 (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
2476 ((ctx->ext_attr_ver == 2) &&
2477 (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
2478 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
2479 goto clear_extattr;
2480 }
2481
2482 if (header->h_blocks != 1) {
2483 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
2484 goto clear_extattr;
2485 }
2486
2487 if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
2488 goto clear_extattr;
2489
2490 region = region_create(0, fs->blocksize);
2491 if (!region) {
2492 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
2493 ctx->flags |= E2F_FLAG_ABORT;
2494 return 0;
2495 }
2496 if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
2497 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2498 goto clear_extattr;
2499 }
2500
2501 first = (struct ext2_ext_attr_entry *)(header+1);
2502 end = block_buf + fs->blocksize;
2503 entry = first;
2504 while ((char *)entry < end && *(__u32 *)entry) {
2505 __u32 hash;
2506
2507 if (region_allocate(region, (char *)entry - (char *)header,
2508 EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
2509 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2510 goto clear_extattr;
2511 break;
2512 }
2513 if ((ctx->ext_attr_ver == 1 &&
2514 (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
2515 (ctx->ext_attr_ver == 2 &&
2516 entry->e_name_index == 0)) {
2517 if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
2518 goto clear_extattr;
2519 break;
2520 }
2521 if (entry->e_value_inum == 0) {
2522 if (entry->e_value_offs + entry->e_value_size >
2523 fs->blocksize) {
2524 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
2525 goto clear_extattr;
2526 break;
2527 }
2528 if (entry->e_value_size &&
2529 region_allocate(region, entry->e_value_offs,
2530 EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
2531 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION,
2532 pctx))
2533 goto clear_extattr;
2534 }
2535
2536 hash = ext2fs_ext_attr_hash_entry(entry, block_buf +
2537 entry->e_value_offs);
2538
2539 if (entry->e_hash != hash) {
2540 pctx->num = entry->e_hash;
2541 if (fix_problem(ctx, PR_1_ATTR_HASH, pctx))
2542 goto clear_extattr;
2543 entry->e_hash = hash;
2544 }
2545 } else {
2546 problem_t problem;
2547 blk64_t entry_quota_blocks;
2548
2549 problem = check_large_ea_inode(ctx, entry, pctx,
2550 &entry_quota_blocks);
2551 if (problem && fix_problem(ctx, problem, pctx))
2552 goto clear_extattr;
2553
2554 quota_blocks += entry_quota_blocks;
2555 quota_inodes++;
2556 }
2557
2558 entry = EXT2_EXT_ATTR_NEXT(entry);
2559 }
2560 if (region_allocate(region, (char *)entry - (char *)header, 4)) {
2561 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2562 goto clear_extattr;
2563 }
2564 region_free(region);
2565
2566 /*
2567 * We only get here if there was no other errors that were fixed.
2568 * If there was a checksum fail, ask to correct it.
2569 */
2570 if (failed_csum &&
2571 fix_problem(ctx, PR_1_EA_BLOCK_ONLY_CSUM_INVALID, pctx)) {
2572 pctx->errcode = ext2fs_write_ext_attr3(fs, blk, block_buf,
2573 pctx->ino);
2574 if (pctx->errcode)
2575 return 0;
2576 }
2577
2578 if (quota_blocks != EXT2FS_C2B(fs, 1U)) {
2579 if (!ctx->ea_block_quota_blocks) {
2580 pctx->errcode = ea_refcount_create(0,
2581 &ctx->ea_block_quota_blocks);
2582 if (pctx->errcode) {
2583 pctx->num = 3;
2584 goto refcount_fail;
2585 }
2586 }
2587 ea_refcount_store(ctx->ea_block_quota_blocks, blk,
2588 quota_blocks);
2589 }
2590
2591 if (quota_inodes) {
2592 if (!ctx->ea_block_quota_inodes) {
2593 pctx->errcode = ea_refcount_create(0,
2594 &ctx->ea_block_quota_inodes);
2595 if (pctx->errcode) {
2596 pctx->num = 4;
2597 refcount_fail:
2598 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2599 ctx->flags |= E2F_FLAG_ABORT;
2600 return 0;
2601 }
2602 }
2603
2604 ea_refcount_store(ctx->ea_block_quota_inodes, blk,
2605 quota_inodes);
2606 }
2607 ea_block_quota->blocks = quota_blocks;
2608 ea_block_quota->inodes = quota_inodes;
2609
2610 inc_ea_inode_refs(ctx, pctx, first, end);
2611 ea_refcount_store(ctx->refcount, blk, header->h_refcount - 1);
2612 mark_block_used(ctx, blk);
2613 ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk);
2614 return 1;
2615
2616 clear_extattr:
2617 if (region)
2618 region_free(region);
2619 ext2fs_file_acl_block_set(fs, inode, 0);
2620 e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
2621 return 0;
2622 }
2623
2624 /* Returns 1 if bad htree, 0 if OK */
2625 static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
2626 ext2_ino_t ino, struct ext2_inode *inode,
2627 char *block_buf)
2628 {
2629 struct ext2_dx_root_info *root;
2630 ext2_filsys fs = ctx->fs;
2631 errcode_t retval;
2632 blk64_t blk;
2633
2634 if ((!LINUX_S_ISDIR(inode->i_mode) &&
2635 fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
2636 (!ext2fs_has_feature_dir_index(fs->super) &&
2637 fix_problem(ctx, PR_1_HTREE_SET, pctx)))
2638 return 1;
2639
2640 pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk);
2641
2642 if ((pctx->errcode) ||
2643 (blk == 0) ||
2644 (blk < fs->super->s_first_data_block) ||
2645 (blk >= ext2fs_blocks_count(fs->super))) {
2646 if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2647 return 1;
2648 else
2649 return 0;
2650 }
2651
2652 retval = io_channel_read_blk64(fs->io, blk, 1, block_buf);
2653 if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2654 return 1;
2655
2656 /* XXX should check that beginning matches a directory */
2657 root = (struct ext2_dx_root_info *) (block_buf + 24);
2658
2659 if ((root->reserved_zero || root->info_length < 8) &&
2660 fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2661 return 1;
2662
2663 pctx->num = root->hash_version;
2664 if ((root->hash_version != EXT2_HASH_LEGACY) &&
2665 (root->hash_version != EXT2_HASH_HALF_MD4) &&
2666 (root->hash_version != EXT2_HASH_TEA) &&
2667 fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
2668 return 1;
2669
2670 if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
2671 fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
2672 return 1;
2673
2674 pctx->num = root->indirect_levels;
2675 if ((root->indirect_levels > ext2_dir_htree_level(fs)) &&
2676 fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
2677 return 1;
2678
2679 return 0;
2680 }
2681
2682 void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
2683 struct ext2_inode *inode, int restart_flag,
2684 const char *source)
2685 {
2686 inode->i_flags = 0;
2687 inode->i_links_count = 0;
2688 ext2fs_icount_store(ctx->inode_link_info, ino, 0);
2689 inode->i_dtime = ctx->now;
2690
2691 /*
2692 * If a special inode has such rotten block mappings that we
2693 * want to clear the whole inode, be sure to actually zap
2694 * the block maps because i_links_count isn't checked for
2695 * special inodes, and we'll end up right back here the next
2696 * time we run fsck.
2697 */
2698 if (ino < EXT2_FIRST_INODE(ctx->fs->super))
2699 memset(inode->i_block, 0, sizeof(inode->i_block));
2700
2701 ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
2702 ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
2703 if (ctx->inode_reg_map)
2704 ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
2705 if (ctx->inode_bad_map)
2706 ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
2707
2708 /*
2709 * If the inode was partially accounted for before processing
2710 * was aborted, we need to restart the pass 1 scan.
2711 */
2712 ctx->flags |= restart_flag;
2713
2714 if (ino == EXT2_BAD_INO)
2715 memset(inode, 0, sizeof(struct ext2_inode));
2716
2717 e2fsck_write_inode(ctx, ino, inode, source);
2718 }
2719
2720 /*
2721 * Use the multiple-blocks reclamation code to fix alignment problems in
2722 * a bigalloc filesystem. We want a logical cluster to map to *only* one
2723 * physical cluster, and we want the block offsets within that cluster to
2724 * line up.
2725 */
2726 static int has_unaligned_cluster_map(e2fsck_t ctx,
2727 blk64_t last_pblk, blk64_t last_lblk,
2728 blk64_t pblk, blk64_t lblk)
2729 {
2730 blk64_t cluster_mask;
2731
2732 if (!ctx->fs->cluster_ratio_bits)
2733 return 0;
2734 cluster_mask = EXT2FS_CLUSTER_MASK(ctx->fs);
2735
2736 /*
2737 * If the block in the logical cluster doesn't align with the block in
2738 * the physical cluster...
2739 */
2740 if ((lblk & cluster_mask) != (pblk & cluster_mask))
2741 return 1;
2742
2743 /*
2744 * If we cross a physical cluster boundary within a logical cluster...
2745 */
2746 if (last_pblk && (lblk & cluster_mask) != 0 &&
2747 EXT2FS_B2C(ctx->fs, lblk) == EXT2FS_B2C(ctx->fs, last_lblk) &&
2748 EXT2FS_B2C(ctx->fs, pblk) != EXT2FS_B2C(ctx->fs, last_pblk))
2749 return 1;
2750
2751 return 0;
2752 }
2753
2754 static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
2755 struct process_block_struct *pb,
2756 blk64_t start_block, blk64_t end_block,
2757 blk64_t eof_block,
2758 ext2_extent_handle_t ehandle,
2759 int try_repairs)
2760 {
2761 struct ext2fs_extent extent;
2762 blk64_t blk, last_lblk;
2763 unsigned int i, n;
2764 int is_dir, is_leaf;
2765 problem_t problem;
2766 struct ext2_extent_info info;
2767 int failed_csum = 0;
2768
2769 if (pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID)
2770 failed_csum = 1;
2771
2772 pctx->errcode = ext2fs_extent_get_info(ehandle, &info);
2773 if (pctx->errcode)
2774 return;
2775 if (!(ctx->options & E2F_OPT_FIXES_ONLY) &&
2776 !pb->eti.force_rebuild) {
2777 struct extent_tree_level *etl;
2778
2779 etl = pb->eti.ext_info + info.curr_level;
2780 etl->num_extents += info.num_entries;
2781 etl->max_extents += info.max_entries;
2782 /*
2783 * Implementation wart: Splitting extent blocks when appending
2784 * will leave the old block with one free entry. Therefore
2785 * unless the node is totally full, pretend that a non-root
2786 * extent block can hold one fewer entry than it actually does,
2787 * so that we don't repeatedly rebuild the extent tree.
2788 */
2789 if (info.curr_level && info.num_entries < info.max_entries)
2790 etl->max_extents--;
2791 }
2792
2793 pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB,
2794 &extent);
2795 while ((pctx->errcode == 0 ||
2796 pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID) &&
2797 info.num_entries-- > 0) {
2798 is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF;
2799 is_dir = LINUX_S_ISDIR(pctx->inode->i_mode);
2800 last_lblk = extent.e_lblk + extent.e_len - 1;
2801
2802 problem = 0;
2803 pctx->blk = extent.e_pblk;
2804 pctx->blk2 = extent.e_lblk;
2805 pctx->num = extent.e_len;
2806 pctx->blkcount = extent.e_lblk + extent.e_len;
2807
2808 if (extent.e_pblk == 0 ||
2809 extent.e_pblk < ctx->fs->super->s_first_data_block ||
2810 extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super))
2811 problem = PR_1_EXTENT_BAD_START_BLK;
2812 else if (extent.e_lblk < start_block)
2813 problem = PR_1_OUT_OF_ORDER_EXTENTS;
2814 else if ((end_block && last_lblk > end_block) &&
2815 (!(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT &&
2816 last_lblk > eof_block)))
2817 problem = PR_1_EXTENT_END_OUT_OF_BOUNDS;
2818 else if (is_leaf && extent.e_len == 0)
2819 problem = PR_1_EXTENT_LENGTH_ZERO;
2820 else if (is_leaf &&
2821 (extent.e_pblk + extent.e_len) >
2822 ext2fs_blocks_count(ctx->fs->super))
2823 problem = PR_1_EXTENT_ENDS_BEYOND;
2824 else if (is_leaf && is_dir &&
2825 ((extent.e_lblk + extent.e_len) >
2826 (1U << (21 - ctx->fs->super->s_log_block_size))))
2827 problem = PR_1_TOOBIG_DIR;
2828
2829 if (is_leaf && problem == 0 && extent.e_len > 0) {
2830 #if 0
2831 printf("extent_region(ino=%u, expect=%llu, "
2832 "lblk=%llu, len=%u)\n",
2833 pb->ino, pb->next_lblock,
2834 extent.e_lblk, extent.e_len);
2835 #endif
2836 if (extent.e_lblk < pb->next_lblock)
2837 problem = PR_1_EXTENT_COLLISION;
2838 else if (extent.e_lblk + extent.e_len > pb->next_lblock)
2839 pb->next_lblock = extent.e_lblk + extent.e_len;
2840 }
2841
2842 /*
2843 * Uninitialized blocks in a directory? Clear the flag and
2844 * we'll interpret the blocks later.
2845 */
2846 if (try_repairs && is_dir && problem == 0 &&
2847 (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
2848 fix_problem(ctx, PR_1_UNINIT_DBLOCK, pctx)) {
2849 extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
2850 pb->inode_modified = 1;
2851 pctx->errcode = ext2fs_extent_replace(ehandle, 0,
2852 &extent);
2853 if (pctx->errcode)
2854 return;
2855 failed_csum = 0;
2856 }
2857
2858 if (try_repairs && problem) {
2859 report_problem:
2860 if (fix_problem(ctx, problem, pctx)) {
2861 if (ctx->invalid_bitmaps) {
2862 /*
2863 * If fsck knows the bitmaps are bad,
2864 * skip to the next extent and
2865 * try to clear this extent again
2866 * after fixing the bitmaps, by
2867 * restarting fsck.
2868 */
2869 pctx->errcode = ext2fs_extent_get(
2870 ehandle,
2871 EXT2_EXTENT_NEXT_SIB,
2872 &extent);
2873 ctx->flags |= E2F_FLAG_RESTART_LATER;
2874 if (pctx->errcode ==
2875 EXT2_ET_NO_CURRENT_NODE) {
2876 pctx->errcode = 0;
2877 break;
2878 }
2879 continue;
2880 }
2881 e2fsck_read_bitmaps(ctx);
2882 pb->inode_modified = 1;
2883 pctx->errcode =
2884 ext2fs_extent_delete(ehandle, 0);
2885 if (pctx->errcode) {
2886 pctx->str = "ext2fs_extent_delete";
2887 return;
2888 }
2889 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
2890 if (pctx->errcode &&
2891 pctx->errcode != EXT2_ET_NO_CURRENT_NODE) {
2892 pctx->str = "ext2fs_extent_fix_parents";
2893 return;
2894 }
2895 pctx->errcode = ext2fs_extent_get(ehandle,
2896 EXT2_EXTENT_CURRENT,
2897 &extent);
2898 if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) {
2899 pctx->errcode = 0;
2900 break;
2901 }
2902 failed_csum = 0;
2903 continue;
2904 }
2905 goto next;
2906 }
2907
2908 if (!is_leaf) {
2909 blk64_t lblk = extent.e_lblk;
2910 int next_try_repairs = 1;
2911
2912 blk = extent.e_pblk;
2913
2914 /*
2915 * If this lower extent block collides with critical
2916 * metadata, don't try to repair the damage. Pass 1b
2917 * will reallocate the block; then we can try again.
2918 */
2919 if (pb->ino != EXT2_RESIZE_INO &&
2920 extent.e_pblk < ctx->fs->super->s_blocks_count &&
2921 ext2fs_test_block_bitmap2(ctx->block_metadata_map,
2922 extent.e_pblk)) {
2923 next_try_repairs = 0;
2924 pctx->blk = blk;
2925 fix_problem(ctx,
2926 PR_1_CRITICAL_METADATA_COLLISION,
2927 pctx);
2928 if ((ctx->options & E2F_OPT_NO) == 0)
2929 ctx->flags |= E2F_FLAG_RESTART_LATER;
2930 }
2931 pctx->errcode = ext2fs_extent_get(ehandle,
2932 EXT2_EXTENT_DOWN, &extent);
2933 if (pctx->errcode &&
2934 pctx->errcode != EXT2_ET_EXTENT_CSUM_INVALID) {
2935 pctx->str = "EXT2_EXTENT_DOWN";
2936 problem = PR_1_EXTENT_HEADER_INVALID;
2937 if (!next_try_repairs)
2938 return;
2939 if (pctx->errcode == EXT2_ET_EXTENT_HEADER_BAD)
2940 goto report_problem;
2941 return;
2942 }
2943 /* The next extent should match this index's logical start */
2944 if (extent.e_lblk != lblk) {
2945 struct ext2_extent_info e_info;
2946
2947 ext2fs_extent_get_info(ehandle, &e_info);
2948 pctx->blk = lblk;
2949 pctx->blk2 = extent.e_lblk;
2950 pctx->num = e_info.curr_level - 1;
2951 problem = PR_1_EXTENT_INDEX_START_INVALID;
2952 if (fix_problem(ctx, problem, pctx)) {
2953 pb->inode_modified = 1;
2954 pctx->errcode =
2955 ext2fs_extent_fix_parents(ehandle);
2956 if (pctx->errcode) {
2957 pctx->str = "ext2fs_extent_fix_parents";
2958 return;
2959 }
2960 }
2961 }
2962 scan_extent_node(ctx, pctx, pb, extent.e_lblk,
2963 last_lblk, eof_block, ehandle,
2964 next_try_repairs);
2965 if (pctx->errcode)
2966 return;
2967 pctx->errcode = ext2fs_extent_get(ehandle,
2968 EXT2_EXTENT_UP, &extent);
2969 if (pctx->errcode) {
2970 pctx->str = "EXT2_EXTENT_UP";
2971 return;
2972 }
2973 mark_block_used(ctx, blk);
2974 pb->num_blocks++;
2975 goto next;
2976 }
2977
2978 if ((pb->previous_block != 0) &&
2979 (pb->previous_block+1 != extent.e_pblk)) {
2980 if (ctx->options & E2F_OPT_FRAGCHECK) {
2981 char type = '?';
2982
2983 if (pb->is_dir)
2984 type = 'd';
2985 else if (pb->is_reg)
2986 type = 'f';
2987
2988 printf(("%6lu(%c): expecting %6lu "
2989 "actual extent "
2990 "phys %6lu log %lu len %lu\n"),
2991 (unsigned long) pctx->ino, type,
2992 (unsigned long) pb->previous_block+1,
2993 (unsigned long) extent.e_pblk,
2994 (unsigned long) extent.e_lblk,
2995 (unsigned long) extent.e_len);
2996 }
2997 pb->fragmented = 1;
2998 }
2999 /*
3000 * If we notice a gap in the logical block mappings of an
3001 * extent-mapped directory, offer to close the hole by
3002 * moving the logical block down, otherwise we'll go mad in
3003 * pass 3 allocating empty directory blocks to fill the hole.
3004 */
3005 if (try_repairs && is_dir &&
3006 pb->last_block + 1 < extent.e_lblk) {
3007 blk64_t new_lblk;
3008
3009 new_lblk = pb->last_block + 1;
3010 if (EXT2FS_CLUSTER_RATIO(ctx->fs) > 1)
3011 new_lblk = ((new_lblk +
3012 EXT2FS_CLUSTER_RATIO(ctx->fs) - 1) &
3013 ~EXT2FS_CLUSTER_MASK(ctx->fs)) |
3014 (extent.e_pblk &
3015 EXT2FS_CLUSTER_MASK(ctx->fs));
3016 pctx->blk = extent.e_lblk;
3017 pctx->blk2 = new_lblk;
3018 if (fix_problem(ctx, PR_1_COLLAPSE_DBLOCK, pctx)) {
3019 extent.e_lblk = new_lblk;
3020 pb->inode_modified = 1;
3021 pctx->errcode = ext2fs_extent_replace(ehandle,
3022 0, &extent);
3023 if (pctx->errcode) {
3024 pctx->errcode = 0;
3025 goto alloc_later;
3026 }
3027 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
3028 if (pctx->errcode)
3029 goto failed_add_dir_block;
3030 pctx->errcode = ext2fs_extent_goto(ehandle,
3031 extent.e_lblk);
3032 if (pctx->errcode)
3033 goto failed_add_dir_block;
3034 last_lblk = extent.e_lblk + extent.e_len - 1;
3035 failed_csum = 0;
3036 }
3037 }
3038 alloc_later:
3039 if (is_dir) {
3040 while (++pb->last_db_block <
3041 (e2_blkcnt_t) extent.e_lblk) {
3042 pctx->errcode = ext2fs_add_dir_block2(
3043 ctx->fs->dblist,
3044 pb->ino, 0,
3045 pb->last_db_block);
3046 if (pctx->errcode) {
3047 pctx->blk = 0;
3048 pctx->num = pb->last_db_block;
3049 goto failed_add_dir_block;
3050 }
3051 }
3052
3053 for (i = 0; i < extent.e_len; i++) {
3054 pctx->errcode = ext2fs_add_dir_block2(
3055 ctx->fs->dblist,
3056 pctx->ino,
3057 extent.e_pblk + i,
3058 extent.e_lblk + i);
3059 if (pctx->errcode) {
3060 pctx->blk = extent.e_pblk + i;
3061 pctx->num = extent.e_lblk + i;
3062 failed_add_dir_block:
3063 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3064 /* Should never get here */
3065 ctx->flags |= E2F_FLAG_ABORT;
3066 return;
3067 }
3068 }
3069 if (extent.e_len > 0)
3070 pb->last_db_block = extent.e_lblk + extent.e_len - 1;
3071 }
3072 if (has_unaligned_cluster_map(ctx, pb->previous_block,
3073 pb->last_block,
3074 extent.e_pblk,
3075 extent.e_lblk)) {
3076 for (i = 0; i < extent.e_len; i++) {
3077 pctx->blk = extent.e_lblk + i;
3078 pctx->blk2 = extent.e_pblk + i;
3079 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
3080 mark_block_used(ctx, extent.e_pblk + i);
3081 mark_block_used(ctx, extent.e_pblk + i);
3082 }
3083 }
3084
3085 /*
3086 * Check whether first cluster got marked in previous iteration.
3087 */
3088 if (ctx->fs->cluster_ratio_bits &&
3089 pb->previous_block &&
3090 (EXT2FS_B2C(ctx->fs, extent.e_pblk) ==
3091 EXT2FS_B2C(ctx->fs, pb->previous_block)))
3092 /* Set blk to the beginning of next cluster. */
3093 blk = EXT2FS_C2B(
3094 ctx->fs,
3095 EXT2FS_B2C(ctx->fs, extent.e_pblk) + 1);
3096 else
3097 /* Set blk to the beginning of current cluster. */
3098 blk = EXT2FS_C2B(ctx->fs,
3099 EXT2FS_B2C(ctx->fs, extent.e_pblk));
3100
3101 if (blk < extent.e_pblk + extent.e_len) {
3102 mark_blocks_used(ctx, blk,
3103 extent.e_pblk + extent.e_len - blk);
3104 n = DIV_ROUND_UP(extent.e_pblk + extent.e_len - blk,
3105 EXT2FS_CLUSTER_RATIO(ctx->fs));
3106 pb->num_blocks += n;
3107 }
3108 pb->last_block = extent.e_lblk + extent.e_len - 1;
3109 pb->previous_block = extent.e_pblk + extent.e_len - 1;
3110 start_block = pb->last_block = last_lblk;
3111 if (is_leaf && !is_dir &&
3112 !(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT))
3113 pb->last_init_lblock = last_lblk;
3114 next:
3115 pctx->errcode = ext2fs_extent_get(ehandle,
3116 EXT2_EXTENT_NEXT_SIB,
3117 &extent);
3118 }
3119
3120 /* Failed csum but passes checks? Ask to fix checksum. */
3121 if (failed_csum &&
3122 fix_problem(ctx, PR_1_EXTENT_ONLY_CSUM_INVALID, pctx)) {
3123 pb->inode_modified = 1;
3124 pctx->errcode = ext2fs_extent_replace(ehandle, 0, &extent);
3125 if (pctx->errcode)
3126 return;
3127 }
3128
3129 if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT)
3130 pctx->errcode = 0;
3131 }
3132
3133 static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
3134 struct process_block_struct *pb)
3135 {
3136 struct ext2_extent_info info;
3137 struct ext2_inode *inode = pctx->inode;
3138 ext2_extent_handle_t ehandle;
3139 ext2_filsys fs = ctx->fs;
3140 ext2_ino_t ino = pctx->ino;
3141 errcode_t retval;
3142 blk64_t eof_lblk;
3143 struct ext3_extent_header *eh;
3144
3145 /* Check for a proper extent header... */
3146 eh = (struct ext3_extent_header *) &inode->i_block[0];
3147 retval = ext2fs_extent_header_verify(eh, sizeof(inode->i_block));
3148 if (retval) {
3149 if (fix_problem(ctx, PR_1_MISSING_EXTENT_HEADER, pctx))
3150 e2fsck_clear_inode(ctx, ino, inode, 0,
3151 "check_blocks_extents");
3152 pctx->errcode = 0;
3153 return;
3154 }
3155
3156 /* ...since this function doesn't fail if i_block is zeroed. */
3157 pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle);
3158 if (pctx->errcode) {
3159 if (fix_problem(ctx, PR_1_READ_EXTENT, pctx))
3160 e2fsck_clear_inode(ctx, ino, inode, 0,
3161 "check_blocks_extents");
3162 pctx->errcode = 0;
3163 return;
3164 }
3165
3166 retval = ext2fs_extent_get_info(ehandle, &info);
3167 if (retval == 0) {
3168 int max_depth = info.max_depth;
3169
3170 if (max_depth >= MAX_EXTENT_DEPTH_COUNT)
3171 max_depth = MAX_EXTENT_DEPTH_COUNT-1;
3172 ctx->extent_depth_count[max_depth]++;
3173 }
3174
3175 /* Check maximum extent depth */
3176 pctx->blk = info.max_depth;
3177 pctx->blk2 = ext2fs_max_extent_depth(ehandle);
3178 if (pctx->blk2 < pctx->blk &&
3179 fix_problem(ctx, PR_1_EXTENT_BAD_MAX_DEPTH, pctx))
3180 pb->eti.force_rebuild = 1;
3181
3182 /* Can we collect extent tree level stats? */
3183 pctx->blk = MAX_EXTENT_DEPTH_COUNT;
3184 if (pctx->blk2 > pctx->blk)
3185 fix_problem(ctx, PR_1E_MAX_EXTENT_TREE_DEPTH, pctx);
3186 memset(pb->eti.ext_info, 0, sizeof(pb->eti.ext_info));
3187 pb->eti.ino = pb->ino;
3188
3189 pb->next_lblock = 0;
3190
3191 eof_lblk = ((EXT2_I_SIZE(inode) + fs->blocksize - 1) >>
3192 EXT2_BLOCK_SIZE_BITS(fs->super)) - 1;
3193 scan_extent_node(ctx, pctx, pb, 0, 0, eof_lblk, ehandle, 1);
3194 if (pctx->errcode &&
3195 fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) {
3196 pb->num_blocks = 0;
3197 inode->i_blocks = 0;
3198 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
3199 "check_blocks_extents");
3200 pctx->errcode = 0;
3201 }
3202 ext2fs_extent_free(ehandle);
3203
3204 /* Rebuild unless it's a dir and we're rehashing it */
3205 if (LINUX_S_ISDIR(inode->i_mode) &&
3206 e2fsck_dir_will_be_rehashed(ctx, ino))
3207 return;
3208
3209 if (ctx->options & E2F_OPT_CONVERT_BMAP)
3210 e2fsck_rebuild_extents_later(ctx, ino);
3211 else
3212 e2fsck_should_rebuild_extents(ctx, pctx, &pb->eti, &info);
3213 }
3214
3215 /*
3216 * In fact we don't need to check blocks for an inode with inline data
3217 * because this inode doesn't have any blocks. In this function all
3218 * we need to do is add this inode into dblist when it is a directory.
3219 */
3220 static void check_blocks_inline_data(e2fsck_t ctx, struct problem_context *pctx,
3221 struct process_block_struct *pb)
3222 {
3223 int flags;
3224 size_t inline_data_size = 0;
3225
3226 if (!pb->is_dir) {
3227 pctx->errcode = 0;
3228 return;
3229 }
3230
3231 /* Process the dirents in i_block[] as the "first" block. */
3232 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 0);
3233 if (pctx->errcode)
3234 goto err;
3235
3236 /* Process the dirents in the EA as a "second" block. */
3237 flags = ctx->fs->flags;
3238 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3239 pctx->errcode = ext2fs_inline_data_size(ctx->fs, pb->ino,
3240 &inline_data_size);
3241 ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3242 (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3243 if (pctx->errcode) {
3244 pctx->errcode = 0;
3245 return;
3246 }
3247
3248 if (inline_data_size <= EXT4_MIN_INLINE_DATA_SIZE)
3249 return;
3250
3251 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 1);
3252 if (pctx->errcode)
3253 goto err;
3254
3255 return;
3256 err:
3257 pctx->blk = 0;
3258 pctx->num = 0;
3259 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3260 ctx->flags |= E2F_FLAG_ABORT;
3261 }
3262
3263 /*
3264 * This subroutine is called on each inode to account for all of the
3265 * blocks used by that inode.
3266 */
3267 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
3268 char *block_buf, const struct ea_quota *ea_ibody_quota)
3269 {
3270 ext2_filsys fs = ctx->fs;
3271 struct process_block_struct pb;
3272 ext2_ino_t ino = pctx->ino;
3273 struct ext2_inode *inode = pctx->inode;
3274 unsigned bad_size = 0;
3275 int dirty_inode = 0;
3276 int extent_fs;
3277 int inlinedata_fs;
3278 __u64 size;
3279 struct ea_quota ea_block_quota;
3280
3281 pb.ino = ino;
3282 pb.num_blocks = EXT2FS_B2C(ctx->fs,
3283 ea_ibody_quota ? ea_ibody_quota->blocks : 0);
3284 pb.last_block = ~0;
3285 pb.last_init_lblock = -1;
3286 pb.last_db_block = -1;
3287 pb.num_illegal_blocks = 0;
3288 pb.suppress = 0; pb.clear = 0;
3289 pb.fragmented = 0;
3290 pb.compressed = 0;
3291 pb.previous_block = 0;
3292 pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
3293 pb.is_reg = LINUX_S_ISREG(inode->i_mode);
3294 pb.max_blocks = 1U << (31 - fs->super->s_log_block_size);
3295 pb.inode = inode;
3296 pb.pctx = pctx;
3297 pb.ctx = ctx;
3298 pb.inode_modified = 0;
3299 pb.eti.force_rebuild = 0;
3300 pctx->ino = ino;
3301 pctx->errcode = 0;
3302
3303 extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
3304 inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
3305
3306 if (check_ext_attr(ctx, pctx, block_buf, &ea_block_quota)) {
3307 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3308 goto out;
3309 pb.num_blocks += EXT2FS_B2C(ctx->fs, ea_block_quota.blocks);
3310 }
3311
3312 if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL))
3313 check_blocks_inline_data(ctx, pctx, &pb);
3314 else if (ext2fs_inode_has_valid_blocks2(fs, inode)) {
3315 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
3316 check_blocks_extents(ctx, pctx, &pb);
3317 else {
3318 int flags;
3319 /*
3320 * If we've modified the inode, write it out before
3321 * iterate() tries to use it.
3322 */
3323 if (dirty_inode) {
3324 e2fsck_write_inode(ctx, ino, inode,
3325 "check_blocks");
3326 dirty_inode = 0;
3327 }
3328 flags = fs->flags;
3329 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3330 pctx->errcode = ext2fs_block_iterate3(fs, ino,
3331 pb.is_dir ? BLOCK_FLAG_HOLE : 0,
3332 block_buf, process_block, &pb);
3333 /*
3334 * We do not have uninitialized extents in non extent
3335 * files.
3336 */
3337 pb.last_init_lblock = pb.last_block;
3338 /*
3339 * If iterate() changed a block mapping, we have to
3340 * re-read the inode. If we decide to clear the
3341 * inode after clearing some stuff, we'll re-write the
3342 * bad mappings into the inode!
3343 */
3344 if (pb.inode_modified)
3345 e2fsck_read_inode(ctx, ino, inode,
3346 "check_blocks");
3347 fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3348 (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3349
3350 if (ctx->options & E2F_OPT_CONVERT_BMAP) {
3351 #ifdef DEBUG
3352 printf("bmap rebuild ino=%d\n", ino);
3353 #endif
3354 if (!LINUX_S_ISDIR(inode->i_mode) ||
3355 !e2fsck_dir_will_be_rehashed(ctx, ino))
3356 e2fsck_rebuild_extents_later(ctx, ino);
3357 }
3358 }
3359 }
3360 end_problem_latch(ctx, PR_LATCH_BLOCK);
3361 end_problem_latch(ctx, PR_LATCH_TOOBIG);
3362 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3363 goto out;
3364 if (pctx->errcode)
3365 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
3366
3367 if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) {
3368 if (LINUX_S_ISDIR(inode->i_mode))
3369 ctx->fs_fragmented_dir++;
3370 else
3371 ctx->fs_fragmented++;
3372 }
3373
3374 if (pb.clear) {
3375 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
3376 "check_blocks");
3377 return;
3378 }
3379
3380 if (inode->i_flags & EXT2_INDEX_FL) {
3381 if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
3382 inode->i_flags &= ~EXT2_INDEX_FL;
3383 dirty_inode++;
3384 } else {
3385 e2fsck_add_dx_dir(ctx, ino, inode, pb.last_block+1);
3386 }
3387 }
3388
3389 if (!pb.num_blocks && pb.is_dir &&
3390 !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
3391 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
3392 e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
3393 ctx->fs_directory_count--;
3394 return;
3395 }
3396 }
3397
3398 if (ino != quota_type2inum(PRJQUOTA, fs->super) &&
3399 (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INODE(ctx->fs->super)) &&
3400 !(inode->i_flags & EXT4_EA_INODE_FL)) {
3401 quota_data_add(ctx->qctx, (struct ext2_inode_large *) inode,
3402 ino,
3403 pb.num_blocks * EXT2_CLUSTER_SIZE(fs->super));
3404 quota_data_inodes(ctx->qctx, (struct ext2_inode_large *) inode,
3405 ino, (ea_ibody_quota ?
3406 ea_ibody_quota->inodes : 0) +
3407 ea_block_quota.inodes + 1);
3408 }
3409
3410 if (!ext2fs_has_feature_huge_file(fs->super) ||
3411 !(inode->i_flags & EXT4_HUGE_FILE_FL))
3412 pb.num_blocks *= (fs->blocksize / 512);
3413 pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs);
3414 #if 0
3415 printf("inode %u, i_size = %u, last_block = %llu, i_blocks=%llu, num_blocks = %llu\n",
3416 ino, inode->i_size, pb.last_block, ext2fs_inode_i_blocks(fs, inode),
3417 pb.num_blocks);
3418 #endif
3419 if (pb.is_dir) {
3420 unsigned nblock = inode->i_size >> EXT2_BLOCK_SIZE_BITS(fs->super);
3421 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
3422 int flags;
3423 size_t sz = 0;
3424 errcode_t err;
3425
3426 flags = ctx->fs->flags;
3427 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3428 err = ext2fs_inline_data_size(ctx->fs, pctx->ino,
3429 &sz);
3430 ctx->fs->flags = (flags &
3431 EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3432 (ctx->fs->flags &
3433 ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3434 if (err || sz != inode->i_size) {
3435 bad_size = 7;
3436 pctx->num = sz;
3437 }
3438 } else if (inode->i_size & (fs->blocksize - 1))
3439 bad_size = 5;
3440 else if (nblock > (pb.last_block + 1))
3441 bad_size = 1;
3442 else if (nblock < (pb.last_block + 1)) {
3443 if (((pb.last_block + 1) - nblock) >
3444 fs->super->s_prealloc_dir_blocks)
3445 bad_size = 2;
3446 }
3447 } else {
3448 size = EXT2_I_SIZE(inode);
3449 if ((pb.last_init_lblock >= 0) &&
3450 /* Do not allow initialized allocated blocks past i_size*/
3451 (size < (__u64)pb.last_init_lblock * fs->blocksize) &&
3452 !(inode->i_flags & EXT4_VERITY_FL))
3453 bad_size = 3;
3454 else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
3455 size > ext2_max_sizes[fs->super->s_log_block_size])
3456 /* too big for a direct/indirect-mapped file */
3457 bad_size = 4;
3458 else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
3459 size >
3460 ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1))
3461 /* too big for an extent-based file - 32bit ee_block */
3462 bad_size = 6;
3463 }
3464 /* i_size for symlinks is checked elsewhere */
3465 if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
3466 /* Did inline_data set pctx->num earlier? */
3467 if (bad_size != 7)
3468 pctx->num = (pb.last_block + 1) * fs->blocksize;
3469 pctx->group = bad_size;
3470 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
3471 if (LINUX_S_ISDIR(inode->i_mode))
3472 pctx->num &= 0xFFFFFFFFULL;
3473 ext2fs_inode_size_set(fs, inode, pctx->num);
3474 if (EXT2_I_SIZE(inode) == 0 &&
3475 (inode->i_flags & EXT4_INLINE_DATA_FL)) {
3476 memset(inode->i_block, 0,
3477 sizeof(inode->i_block));
3478 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
3479 }
3480 dirty_inode++;
3481 }
3482 pctx->num = 0;
3483 }
3484 if (LINUX_S_ISREG(inode->i_mode) &&
3485 ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
3486 ctx->large_files++;
3487 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
3488 ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) ||
3489 (ext2fs_has_feature_huge_file(fs->super) &&
3490 (inode->i_flags & EXT4_HUGE_FILE_FL) &&
3491 (inode->osd2.linux2.l_i_blocks_hi != 0)))) {
3492 pctx->num = pb.num_blocks;
3493 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
3494 inode->i_blocks = pb.num_blocks;
3495 inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32;
3496 dirty_inode++;
3497 }
3498 pctx->num = 0;
3499 }
3500
3501 /*
3502 * The kernel gets mad if we ask it to allocate bigalloc clusters to
3503 * a block mapped file, so rebuild it as an extent file. We can skip
3504 * symlinks because they're never rewritten.
3505 */
3506 if (ext2fs_has_feature_bigalloc(fs->super) &&
3507 (LINUX_S_ISREG(inode->i_mode) || LINUX_S_ISDIR(inode->i_mode)) &&
3508 ext2fs_inode_data_blocks2(fs, inode) > 0 &&
3509 (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INO(fs->super)) &&
3510 !(inode->i_flags & (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)) &&
3511 fix_problem(ctx, PR_1_NO_BIGALLOC_BLOCKMAP_FILES, pctx)) {
3512 pctx->errcode = e2fsck_rebuild_extents_later(ctx, ino);
3513 if (pctx->errcode)
3514 goto out;
3515 }
3516
3517 if (ctx->dirs_to_hash && pb.is_dir &&
3518 !(ctx->lost_and_found && ctx->lost_and_found == ino) &&
3519 !(inode->i_flags & EXT2_INDEX_FL) &&
3520 ((inode->i_size / fs->blocksize) >= 3))
3521 e2fsck_rehash_dir_later(ctx, ino);
3522
3523 out:
3524 if (dirty_inode)
3525 e2fsck_write_inode(ctx, ino, inode, "check_blocks");
3526 }
3527
3528 #if 0
3529 /*
3530 * Helper function called by process block when an illegal block is
3531 * found. It returns a description about why the block is illegal
3532 */
3533 static char *describe_illegal_block(ext2_filsys fs, blk64_t block)
3534 {
3535 blk64_t super;
3536 int i;
3537 static char problem[80];
3538
3539 super = fs->super->s_first_data_block;
3540 strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
3541 if (block < super) {
3542 sprintf(problem, "< FIRSTBLOCK (%u)", super);
3543 return(problem);
3544 } else if (block >= ext2fs_blocks_count(fs->super)) {
3545 sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super));
3546 return(problem);
3547 }
3548 for (i = 0; i < fs->group_desc_count; i++) {
3549 if (block == super) {
3550 sprintf(problem, "is the superblock in group %d", i);
3551 break;
3552 }
3553 if (block > super &&
3554 block <= (super + fs->desc_blocks)) {
3555 sprintf(problem, "is in the group descriptors "
3556 "of group %d", i);
3557 break;
3558 }
3559 if (block == ext2fs_block_bitmap_loc(fs, i)) {
3560 sprintf(problem, "is the block bitmap of group %d", i);
3561 break;
3562 }
3563 if (block == ext2fs_inode_bitmap_loc(fs, i)) {
3564 sprintf(problem, "is the inode bitmap of group %d", i);
3565 break;
3566 }
3567 if (block >= ext2fs_inode_table_loc(fs, i) &&
3568 (block < ext2fs_inode_table_loc(fs, i)
3569 + fs->inode_blocks_per_group)) {
3570 sprintf(problem, "is in the inode table of group %d",
3571 i);
3572 break;
3573 }
3574 super += fs->super->s_blocks_per_group;
3575 }
3576 return(problem);
3577 }
3578 #endif
3579
3580 /*
3581 * This is a helper function for check_blocks().
3582 */
3583 static int process_block(ext2_filsys fs,
3584 blk64_t *block_nr,
3585 e2_blkcnt_t blockcnt,
3586 blk64_t ref_block EXT2FS_ATTR((unused)),
3587 int ref_offset EXT2FS_ATTR((unused)),
3588 void *priv_data)
3589 {
3590 struct process_block_struct *p;
3591 struct problem_context *pctx;
3592 blk64_t blk = *block_nr;
3593 int ret_code = 0;
3594 problem_t problem = 0;
3595 e2fsck_t ctx;
3596
3597 p = (struct process_block_struct *) priv_data;
3598 pctx = p->pctx;
3599 ctx = p->ctx;
3600
3601 /*
3602 * For a directory, add logical block zero for processing even if it's
3603 * not mapped or we'll be perennially stuck with broken "." and ".."
3604 * entries.
3605 */
3606 if (p->is_dir && blockcnt == 0 && blk == 0) {
3607 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino, 0, 0);
3608 if (pctx->errcode) {
3609 pctx->blk = blk;
3610 pctx->num = blockcnt;
3611 goto failed_add_dir_block;
3612 }
3613 p->last_db_block++;
3614 }
3615
3616 if (blk == 0)
3617 return 0;
3618
3619 #if 0
3620 printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
3621 blockcnt);
3622 #endif
3623
3624 /*
3625 * Simplistic fragmentation check. We merely require that the
3626 * file be contiguous. (Which can never be true for really
3627 * big files that are greater than a block group.)
3628 */
3629 if (p->previous_block && p->ino != EXT2_RESIZE_INO) {
3630 if (p->previous_block+1 != blk) {
3631 if (ctx->options & E2F_OPT_FRAGCHECK) {
3632 char type = '?';
3633
3634 if (p->is_dir)
3635 type = 'd';
3636 else if (p->is_reg)
3637 type = 'f';
3638
3639 printf(_("%6lu(%c): expecting %6lu "
3640 "got phys %6lu (blkcnt %lld)\n"),
3641 (unsigned long) pctx->ino, type,
3642 (unsigned long) p->previous_block+1,
3643 (unsigned long) blk,
3644 blockcnt);
3645 }
3646 p->fragmented = 1;
3647 }
3648 }
3649
3650 if (p->is_dir && blockcnt > (1 << (21 - fs->super->s_log_block_size)))
3651 problem = PR_1_TOOBIG_DIR;
3652 if (p->is_reg && p->num_blocks+1 >= p->max_blocks)
3653 problem = PR_1_TOOBIG_REG;
3654 if (!p->is_dir && !p->is_reg && blockcnt > 0)
3655 problem = PR_1_TOOBIG_SYMLINK;
3656
3657 if (blk < fs->super->s_first_data_block ||
3658 blk >= ext2fs_blocks_count(fs->super))
3659 problem = PR_1_ILLEGAL_BLOCK_NUM;
3660
3661 /*
3662 * If this IND/DIND/TIND block is squatting atop some critical metadata
3663 * (group descriptors, superblock, bitmap, inode table), any write to
3664 * "fix" mapping problems will destroy the metadata. We'll let pass 1b
3665 * fix that and restart fsck.
3666 */
3667 if (blockcnt < 0 &&
3668 p->ino != EXT2_RESIZE_INO &&
3669 blk < ctx->fs->super->s_blocks_count &&
3670 ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk)) {
3671 pctx->blk = blk;
3672 fix_problem(ctx, PR_1_CRITICAL_METADATA_COLLISION, pctx);
3673 if ((ctx->options & E2F_OPT_NO) == 0)
3674 ctx->flags |= E2F_FLAG_RESTART_LATER;
3675 }
3676
3677 if (problem) {
3678 p->num_illegal_blocks++;
3679 /*
3680 * A bit of subterfuge here -- we're trying to fix a block
3681 * mapping, but the IND/DIND/TIND block could have collided
3682 * with some critical metadata. So, fix the in-core mapping so
3683 * iterate won't go insane, but return 0 instead of
3684 * BLOCK_CHANGED so that it won't write the remapping out to
3685 * our multiply linked block.
3686 *
3687 * Even if we previously determined that an *IND block
3688 * conflicts with critical metadata, we must still try to
3689 * iterate the *IND block as if it is an *IND block to find and
3690 * mark the blocks it points to. Better to be overly cautious
3691 * with the used_blocks map so that we don't move the *IND
3692 * block to a block that's really in use!
3693 */
3694 if (p->ino != EXT2_RESIZE_INO &&
3695 ref_block != 0 &&
3696 ext2fs_test_block_bitmap2(ctx->block_metadata_map,
3697 ref_block)) {
3698 *block_nr = 0;
3699 return 0;
3700 }
3701 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
3702 if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
3703 p->clear = 1;
3704 return BLOCK_ABORT;
3705 }
3706 if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
3707 p->suppress = 1;
3708 set_latch_flags(PR_LATCH_BLOCK,
3709 PRL_SUPPRESS, 0);
3710 }
3711 }
3712 pctx->blk = blk;
3713 pctx->blkcount = blockcnt;
3714 if (fix_problem(ctx, problem, pctx)) {
3715 blk = *block_nr = 0;
3716 ret_code = BLOCK_CHANGED;
3717 p->inode_modified = 1;
3718 /*
3719 * If the directory block is too big and is beyond the
3720 * end of the FS, don't bother trying to add it for
3721 * processing -- the kernel would never have created a
3722 * directory this large, and we risk an ENOMEM abort.
3723 * In any case, the toobig handler for extent-based
3724 * directories also doesn't feed toobig blocks to
3725 * pass 2.
3726 */
3727 if (problem == PR_1_TOOBIG_DIR)
3728 return ret_code;
3729 goto mark_dir;
3730 } else
3731 return 0;
3732 }
3733
3734 if (p->ino == EXT2_RESIZE_INO) {
3735 /*
3736 * The resize inode has already be sanity checked
3737 * during pass #0 (the superblock checks). All we
3738 * have to do is mark the double indirect block as
3739 * being in use; all of the other blocks are handled
3740 * by mark_table_blocks()).
3741 */
3742 if (blockcnt == BLOCK_COUNT_DIND)
3743 mark_block_used(ctx, blk);
3744 p->num_blocks++;
3745 } else if (!(ctx->fs->cluster_ratio_bits &&
3746 p->previous_block &&
3747 (EXT2FS_B2C(ctx->fs, blk) ==
3748 EXT2FS_B2C(ctx->fs, p->previous_block)) &&
3749 (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
3750 ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
3751 mark_block_used(ctx, blk);
3752 p->num_blocks++;
3753 } else if (has_unaligned_cluster_map(ctx, p->previous_block,
3754 p->last_block, blk, blockcnt)) {
3755 pctx->blk = blockcnt;
3756 pctx->blk2 = blk;
3757 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
3758 mark_block_used(ctx, blk);
3759 mark_block_used(ctx, blk);
3760 }
3761 if (blockcnt >= 0)
3762 p->last_block = blockcnt;
3763 p->previous_block = blk;
3764 mark_dir:
3765 if (p->is_dir && (blockcnt >= 0)) {
3766 while (++p->last_db_block < blockcnt) {
3767 pctx->errcode = ext2fs_add_dir_block2(fs->dblist,
3768 p->ino, 0,
3769 p->last_db_block);
3770 if (pctx->errcode) {
3771 pctx->blk = 0;
3772 pctx->num = p->last_db_block;
3773 goto failed_add_dir_block;
3774 }
3775 }
3776 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino,
3777 blk, blockcnt);
3778 if (pctx->errcode) {
3779 pctx->blk = blk;
3780 pctx->num = blockcnt;
3781 failed_add_dir_block:
3782 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3783 /* Should never get here */
3784 ctx->flags |= E2F_FLAG_ABORT;
3785 return BLOCK_ABORT;
3786 }
3787 }
3788 return ret_code;
3789 }
3790
3791 static int process_bad_block(ext2_filsys fs,
3792 blk64_t *block_nr,
3793 e2_blkcnt_t blockcnt,
3794 blk64_t ref_block EXT2FS_ATTR((unused)),
3795 int ref_offset EXT2FS_ATTR((unused)),
3796 void *priv_data)
3797 {
3798 struct process_block_struct *p;
3799 blk64_t blk = *block_nr;
3800 blk64_t first_block;
3801 dgrp_t i;
3802 struct problem_context *pctx;
3803 e2fsck_t ctx;
3804
3805 if (!blk)
3806 return 0;
3807
3808 p = (struct process_block_struct *) priv_data;
3809 ctx = p->ctx;
3810 pctx = p->pctx;
3811
3812 pctx->ino = EXT2_BAD_INO;
3813 pctx->blk = blk;
3814 pctx->blkcount = blockcnt;
3815
3816 if ((blk < fs->super->s_first_data_block) ||
3817 (blk >= ext2fs_blocks_count(fs->super))) {
3818 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
3819 *block_nr = 0;
3820 return BLOCK_CHANGED;
3821 } else
3822 return 0;
3823 }
3824
3825 if (blockcnt < 0) {
3826 if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) {
3827 p->bbcheck = 1;
3828 if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
3829 *block_nr = 0;
3830 return BLOCK_CHANGED;
3831 }
3832 } else if (ext2fs_test_block_bitmap2(ctx->block_found_map,
3833 blk)) {
3834 p->bbcheck = 1;
3835 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
3836 pctx)) {
3837 *block_nr = 0;
3838 return BLOCK_CHANGED;
3839 }
3840 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3841 return BLOCK_ABORT;
3842 } else
3843 mark_block_used(ctx, blk);
3844 return 0;
3845 }
3846 #if 0
3847 printf ("DEBUG: Marking %u as bad.\n", blk);
3848 #endif
3849 ctx->fs_badblocks_count++;
3850 /*
3851 * If the block is not used, then mark it as used and return.
3852 * If it is already marked as found, this must mean that
3853 * there's an overlap between the filesystem table blocks
3854 * (bitmaps and inode table) and the bad block list.
3855 */
3856 if (!ext2fs_test_block_bitmap2(ctx->block_found_map, blk)) {
3857 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
3858 return 0;
3859 }
3860 /*
3861 * Try to find the where the filesystem block was used...
3862 */
3863 first_block = fs->super->s_first_data_block;
3864
3865 for (i = 0; i < fs->group_desc_count; i++ ) {
3866 pctx->group = i;
3867 pctx->blk = blk;
3868 if (!ext2fs_bg_has_super(fs, i))
3869 goto skip_super;
3870 if (blk == first_block) {
3871 if (i == 0) {
3872 if (fix_problem(ctx,
3873 PR_1_BAD_PRIMARY_SUPERBLOCK,
3874 pctx)) {
3875 *block_nr = 0;
3876 return BLOCK_CHANGED;
3877 }
3878 return 0;
3879 }
3880 fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
3881 return 0;
3882 }
3883 if ((blk > first_block) &&
3884 (blk <= first_block + fs->desc_blocks)) {
3885 if (i == 0) {
3886 pctx->blk = *block_nr;
3887 if (fix_problem(ctx,
3888 PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
3889 *block_nr = 0;
3890 return BLOCK_CHANGED;
3891 }
3892 return 0;
3893 }
3894 fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
3895 return 0;
3896 }
3897 skip_super:
3898 if (blk == ext2fs_block_bitmap_loc(fs, i)) {
3899 if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
3900 ctx->invalid_block_bitmap_flag[i]++;
3901 ctx->invalid_bitmaps++;
3902 }
3903 return 0;
3904 }
3905 if (blk == ext2fs_inode_bitmap_loc(fs, i)) {
3906 if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
3907 ctx->invalid_inode_bitmap_flag[i]++;
3908 ctx->invalid_bitmaps++;
3909 }
3910 return 0;
3911 }
3912 if ((blk >= ext2fs_inode_table_loc(fs, i)) &&
3913 (blk < (ext2fs_inode_table_loc(fs, i) +
3914 fs->inode_blocks_per_group))) {
3915 /*
3916 * If there are bad blocks in the inode table,
3917 * the inode scan code will try to do
3918 * something reasonable automatically.
3919 */
3920 return 0;
3921 }
3922 first_block += fs->super->s_blocks_per_group;
3923 }
3924 /*
3925 * If we've gotten to this point, then the only
3926 * possibility is that the bad block inode meta data
3927 * is using a bad block.
3928 */
3929 if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
3930 (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
3931 (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
3932 p->bbcheck = 1;
3933 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
3934 *block_nr = 0;
3935 return BLOCK_CHANGED;
3936 }
3937 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3938 return BLOCK_ABORT;
3939 return 0;
3940 }
3941
3942 pctx->group = -1;
3943
3944 /* Warn user that the block wasn't claimed */
3945 fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
3946
3947 return 0;
3948 }
3949
3950 static void new_table_block(e2fsck_t ctx, blk64_t first_block, dgrp_t group,
3951 const char *name, int num, blk64_t *new_block)
3952 {
3953 ext2_filsys fs = ctx->fs;
3954 dgrp_t last_grp;
3955 blk64_t old_block = *new_block;
3956 blk64_t last_block;
3957 dgrp_t flexbg;
3958 unsigned flexbg_size;
3959 int i, is_flexbg;
3960 char *buf;
3961 struct problem_context pctx;
3962
3963 clear_problem_context(&pctx);
3964
3965 pctx.group = group;
3966 pctx.blk = old_block;
3967 pctx.str = name;
3968
3969 /*
3970 * For flex_bg filesystems, first try to allocate the metadata
3971 * within the flex_bg, and if that fails then try finding the
3972 * space anywhere in the filesystem.
3973 */
3974 is_flexbg = ext2fs_has_feature_flex_bg(fs->super);
3975 if (is_flexbg) {
3976 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
3977 flexbg = group / flexbg_size;
3978 first_block = ext2fs_group_first_block2(fs,
3979 flexbg_size * flexbg);
3980 last_grp = group | (flexbg_size - 1);
3981 if (last_grp >= fs->group_desc_count)
3982 last_grp = fs->group_desc_count - 1;
3983 last_block = ext2fs_group_last_block2(fs, last_grp);
3984 } else
3985 last_block = ext2fs_group_last_block2(fs, group);
3986 pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block,
3987 num, ctx->block_found_map,
3988 new_block);
3989 if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL))
3990 pctx.errcode = ext2fs_get_free_blocks2(fs,
3991 fs->super->s_first_data_block,
3992 ext2fs_blocks_count(fs->super),
3993 num, ctx->block_found_map, new_block);
3994 if (pctx.errcode) {
3995 pctx.num = num;
3996 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
3997 ext2fs_unmark_valid(fs);
3998 ctx->flags |= E2F_FLAG_ABORT;
3999 return;
4000 }
4001 pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
4002 if (pctx.errcode) {
4003 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
4004 ext2fs_unmark_valid(fs);
4005 ctx->flags |= E2F_FLAG_ABORT;
4006 return;
4007 }
4008 ext2fs_mark_super_dirty(fs);
4009 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
4010 pctx.blk2 = *new_block;
4011 fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
4012 PR_1_RELOC_TO), &pctx);
4013 pctx.blk2 = 0;
4014 for (i = 0; i < num; i++) {
4015 pctx.blk = i;
4016 ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i);
4017 if (old_block) {
4018 pctx.errcode = io_channel_read_blk64(fs->io,
4019 old_block + i, 1, buf);
4020 if (pctx.errcode)
4021 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
4022 pctx.blk = (*new_block) + i;
4023 pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk,
4024 1, buf);
4025 } else {
4026 pctx.blk = (*new_block) + i;
4027 pctx.errcode = ext2fs_zero_blocks2(fs, pctx.blk, 1,
4028 NULL, NULL);
4029 }
4030
4031 if (pctx.errcode)
4032 fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
4033 }
4034 ext2fs_free_mem(&buf);
4035 }
4036
4037 /*
4038 * This routine gets called at the end of pass 1 if bad blocks are
4039 * detected in the superblock, group descriptors, inode_bitmaps, or
4040 * block bitmaps. At this point, all of the blocks have been mapped
4041 * out, so we can try to allocate new block(s) to replace the bad
4042 * blocks.
4043 */
4044 static void handle_fs_bad_blocks(e2fsck_t ctx)
4045 {
4046 ext2_filsys fs = ctx->fs;
4047 dgrp_t i;
4048 blk64_t first_block;
4049 blk64_t new_blk;
4050
4051 for (i = 0; i < fs->group_desc_count; i++) {
4052 first_block = ext2fs_group_first_block2(fs, i);
4053
4054 if (ctx->invalid_block_bitmap_flag[i]) {
4055 new_blk = ext2fs_block_bitmap_loc(fs, i);
4056 new_table_block(ctx, first_block, i, _("block bitmap"),
4057 1, &new_blk);
4058 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
4059 }
4060 if (ctx->invalid_inode_bitmap_flag[i]) {
4061 new_blk = ext2fs_inode_bitmap_loc(fs, i);
4062 new_table_block(ctx, first_block, i, _("inode bitmap"),
4063 1, &new_blk);
4064 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
4065 }
4066 if (ctx->invalid_inode_table_flag[i]) {
4067 new_blk = ext2fs_inode_table_loc(fs, i);
4068 new_table_block(ctx, first_block, i, _("inode table"),
4069 fs->inode_blocks_per_group,
4070 &new_blk);
4071 ext2fs_inode_table_loc_set(fs, i, new_blk);
4072 ctx->flags |= E2F_FLAG_RESTART;
4073 }
4074 }
4075 ctx->invalid_bitmaps = 0;
4076 }
4077
4078 /*
4079 * This routine marks all blocks which are used by the superblock,
4080 * group descriptors, inode bitmaps, and block bitmaps.
4081 */
4082 static void mark_table_blocks(e2fsck_t ctx)
4083 {
4084 ext2_filsys fs = ctx->fs;
4085 blk64_t b;
4086 dgrp_t i;
4087 unsigned int j;
4088 struct problem_context pctx;
4089
4090 clear_problem_context(&pctx);
4091
4092 for (i = 0; i < fs->group_desc_count; i++) {
4093 pctx.group = i;
4094
4095 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
4096 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_metadata_map);
4097
4098 /*
4099 * Mark the blocks used for the inode table
4100 */
4101 if (ext2fs_inode_table_loc(fs, i)) {
4102 for (j = 0, b = ext2fs_inode_table_loc(fs, i);
4103 j < fs->inode_blocks_per_group;
4104 j++, b++) {
4105 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4106 b)) {
4107 pctx.blk = b;
4108 if (!ctx->invalid_inode_table_flag[i] &&
4109 fix_problem(ctx,
4110 PR_1_ITABLE_CONFLICT, &pctx)) {
4111 ctx->invalid_inode_table_flag[i]++;
4112 ctx->invalid_bitmaps++;
4113 }
4114 } else {
4115 ext2fs_mark_block_bitmap2(
4116 ctx->block_found_map, b);
4117 ext2fs_mark_block_bitmap2(
4118 ctx->block_metadata_map, b);
4119 }
4120 }
4121 }
4122
4123 /*
4124 * Mark block used for the block bitmap
4125 */
4126 if (ext2fs_block_bitmap_loc(fs, i)) {
4127 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4128 ext2fs_block_bitmap_loc(fs, i))) {
4129 pctx.blk = ext2fs_block_bitmap_loc(fs, i);
4130 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
4131 ctx->invalid_block_bitmap_flag[i]++;
4132 ctx->invalid_bitmaps++;
4133 }
4134 } else {
4135 ext2fs_mark_block_bitmap2(ctx->block_found_map,
4136 ext2fs_block_bitmap_loc(fs, i));
4137 ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
4138 ext2fs_block_bitmap_loc(fs, i));
4139 }
4140 }
4141 /*
4142 * Mark block used for the inode bitmap
4143 */
4144 if (ext2fs_inode_bitmap_loc(fs, i)) {
4145 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4146 ext2fs_inode_bitmap_loc(fs, i))) {
4147 pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
4148 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
4149 ctx->invalid_inode_bitmap_flag[i]++;
4150 ctx->invalid_bitmaps++;
4151 }
4152 } else {
4153 ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
4154 ext2fs_inode_bitmap_loc(fs, i));
4155 ext2fs_mark_block_bitmap2(ctx->block_found_map,
4156 ext2fs_inode_bitmap_loc(fs, i));
4157 }
4158 }
4159 }
4160 }
4161
4162 /*
4163 * These subroutines short circuits ext2fs_get_blocks and
4164 * ext2fs_check_directory; we use them since we already have the inode
4165 * structure, so there's no point in letting the ext2fs library read
4166 * the inode again.
4167 */
4168 static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
4169 blk_t *blocks)
4170 {
4171 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4172 int i;
4173
4174 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4175 return EXT2_ET_CALLBACK_NOTHANDLED;
4176
4177 for (i=0; i < EXT2_N_BLOCKS; i++)
4178 blocks[i] = ctx->stashed_inode->i_block[i];
4179 return 0;
4180 }
4181
4182 static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
4183 struct ext2_inode *inode)
4184 {
4185 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4186
4187 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4188 return EXT2_ET_CALLBACK_NOTHANDLED;
4189 *inode = *ctx->stashed_inode;
4190 return 0;
4191 }
4192
4193 static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
4194 struct ext2_inode *inode)
4195 {
4196 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4197
4198 if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
4199 (inode != ctx->stashed_inode))
4200 *ctx->stashed_inode = *inode;
4201 return EXT2_ET_CALLBACK_NOTHANDLED;
4202 }
4203
4204 static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
4205 {
4206 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4207
4208 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4209 return EXT2_ET_CALLBACK_NOTHANDLED;
4210
4211 if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
4212 return EXT2_ET_NO_DIRECTORY;
4213 return 0;
4214 }
4215
4216 static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal,
4217 blk64_t *ret)
4218 {
4219 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4220 errcode_t retval;
4221 blk64_t new_block;
4222
4223 if (ctx->block_found_map) {
4224 retval = ext2fs_new_block2(fs, goal, ctx->block_found_map,
4225 &new_block);
4226 if (retval)
4227 return retval;
4228 if (fs->block_map) {
4229 ext2fs_mark_block_bitmap2(fs->block_map, new_block);
4230 ext2fs_mark_bb_dirty(fs);
4231 }
4232 } else {
4233 if (!fs->block_map) {
4234 retval = ext2fs_read_block_bitmap(fs);
4235 if (retval)
4236 return retval;
4237 }
4238
4239 retval = ext2fs_new_block2(fs, goal, fs->block_map, &new_block);
4240 if (retval)
4241 return retval;
4242 }
4243
4244 *ret = new_block;
4245 return (0);
4246 }
4247
4248 static errcode_t e2fsck_new_range(ext2_filsys fs, int flags, blk64_t goal,
4249 blk64_t len, blk64_t *pblk, blk64_t *plen)
4250 {
4251 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4252 errcode_t retval;
4253
4254 if (ctx->block_found_map)
4255 return ext2fs_new_range(fs, flags, goal, len,
4256 ctx->block_found_map, pblk, plen);
4257
4258 if (!fs->block_map) {
4259 retval = ext2fs_read_block_bitmap(fs);
4260 if (retval)
4261 return retval;
4262 }
4263
4264 return ext2fs_new_range(fs, flags, goal, len, fs->block_map,
4265 pblk, plen);
4266 }
4267
4268 static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
4269 {
4270 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4271
4272 /* Never free a critical metadata block */
4273 if (ctx->block_found_map &&
4274 ctx->block_metadata_map &&
4275 inuse < 0 &&
4276 ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk))
4277 return;
4278
4279 if (ctx->block_found_map) {
4280 if (inuse > 0)
4281 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
4282 else
4283 ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk);
4284 }
4285 }
4286
4287 static void e2fsck_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
4288 blk_t num, int inuse)
4289 {
4290 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4291
4292 /* Never free a critical metadata block */
4293 if (ctx->block_found_map &&
4294 ctx->block_metadata_map &&
4295 inuse < 0 &&
4296 ext2fs_test_block_bitmap_range2(ctx->block_metadata_map, blk, num))
4297 return;
4298
4299 if (ctx->block_found_map) {
4300 if (inuse > 0)
4301 ext2fs_mark_block_bitmap_range2(ctx->block_found_map,
4302 blk, num);
4303 else
4304 ext2fs_unmark_block_bitmap_range2(ctx->block_found_map,
4305 blk, num);
4306 }
4307 }
4308
4309 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts)
4310 {
4311 ext2_filsys fs = ctx->fs;
4312
4313 if (use_shortcuts) {
4314 fs->get_blocks = pass1_get_blocks;
4315 fs->check_directory = pass1_check_directory;
4316 fs->read_inode = pass1_read_inode;
4317 fs->write_inode = pass1_write_inode;
4318 ctx->stashed_ino = 0;
4319 } else {
4320 fs->get_blocks = 0;
4321 fs->check_directory = 0;
4322 fs->read_inode = 0;
4323 fs->write_inode = 0;
4324 }
4325 }
4326
4327 void e2fsck_intercept_block_allocations(e2fsck_t ctx)
4328 {
4329 ext2fs_set_alloc_block_callback(ctx->fs, e2fsck_get_alloc_block, 0);
4330 ext2fs_set_block_alloc_stats_callback(ctx->fs,
4331 e2fsck_block_alloc_stats, 0);
4332 ext2fs_set_new_range_callback(ctx->fs, e2fsck_new_range, NULL);
4333 ext2fs_set_block_alloc_stats_range_callback(ctx->fs,
4334 e2fsck_block_alloc_stats_range, NULL);
4335 }
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