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