]> git.ipfire.org Git - thirdparty/e2fsprogs.git/blob - e2fsck/pass1.c
projects / thirdparty / e2fsprogs.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
e2fsck: optimize away repeated calls to gettext()
[thirdparty/e2fsprogs.git] / e2fsck / pass1.c
1 /*
2 * pass1.c -- pass #1 of e2fsck: sequential scan of the inode table
3 *
4 * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
5 *
6 * %Begin-Header%
7 * This file may be redistributed under the terms of the GNU Public
8 * License.
9 * %End-Header%
10 *
11 * Pass 1 of e2fsck iterates over all the inodes in the filesystems,
12 * and applies the following tests to each inode:
13 *
14 * - The mode field of the inode must be legal.
15 * - The size and block count fields of the inode are correct.
16 * - A data block must not be used by another inode
17 *
18 * Pass 1 also gathers the collects the following information:
19 *
20 * - A bitmap of which inodes are in use. (inode_used_map)
21 * - A bitmap of which inodes are directories. (inode_dir_map)
22 * - A bitmap of which inodes are regular files. (inode_reg_map)
23 * - A bitmap of which inodes have bad fields. (inode_bad_map)
24 * - A bitmap of which inodes are in bad blocks. (inode_bb_map)
25 * - A bitmap of which inodes are imagic inodes. (inode_imagic_map)
26 * - A bitmap of which blocks are in use. (block_found_map)
27 * - A bitmap of which blocks are in use by two inodes (block_dup_map)
28 * - The data blocks of the directory inodes. (dir_map)
29 * - Ref counts for ea_inodes. (ea_inode_refs)
30 *
31 * Pass 1 is designed to stash away enough information so that the
32 * other passes should not need to read in the inode information
33 * during the normal course of a filesystem check. (Although if an
34 * inconsistency is detected, other passes may need to read in an
35 * inode to fix it.)
36 *
37 * Note that pass 1B will be invoked if there are any duplicate blocks
38 * found.
39 */
40
41 #define _GNU_SOURCE 1 /* get strnlen() */
42 #include "config.h"
43 #include <string.h>
44 #include <time.h>
45 #ifdef HAVE_ERRNO_H
46 #include <errno.h>
47 #endif
48
49 #include "e2fsck.h"
50 #include <ext2fs/ext2_ext_attr.h>
51 #include <e2p/e2p.h>
52
53 #include "problem.h"
54
55 #ifdef NO_INLINE_FUNCS
56 #define _INLINE_
57 #else
58 #define _INLINE_ inline
59 #endif
60
61 #undef DEBUG
62
63 struct ea_quota {
64 blk64_t blocks;
65 __u64 inodes;
66 };
67
68 static int process_block(ext2_filsys fs, blk64_t *blocknr,
69 e2_blkcnt_t blockcnt, blk64_t ref_blk,
70 int ref_offset, void *priv_data);
71 static int process_bad_block(ext2_filsys fs, blk64_t *block_nr,
72 e2_blkcnt_t blockcnt, blk64_t ref_blk,
73 int ref_offset, void *priv_data);
74 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
75 char *block_buf,
76 const struct ea_quota *ea_ibody_quota);
77 static void mark_table_blocks(e2fsck_t ctx);
78 static void alloc_bb_map(e2fsck_t ctx);
79 static void alloc_imagic_map(e2fsck_t ctx);
80 static void mark_inode_bad(e2fsck_t ctx, ino_t ino);
81 static void add_encrypted_dir(e2fsck_t ctx, ino_t ino);
82 static void handle_fs_bad_blocks(e2fsck_t ctx);
83 static void process_inodes(e2fsck_t ctx, char *block_buf);
84 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b);
85 static errcode_t scan_callback(ext2_filsys fs, ext2_inode_scan scan,
86 dgrp_t group, void * priv_data);
87 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
88 char *block_buf, int adjust_sign);
89 /* static char *describe_illegal_block(ext2_filsys fs, blk64_t block); */
90
91 struct process_block_struct {
92 ext2_ino_t ino;
93 unsigned is_dir:1, is_reg:1, clear:1, suppress:1,
94 fragmented:1, compressed:1, bbcheck:1,
95 inode_modified:1;
96 blk64_t num_blocks;
97 blk64_t max_blocks;
98 blk64_t last_block;
99 e2_blkcnt_t last_init_lblock;
100 e2_blkcnt_t last_db_block;
101 int num_illegal_blocks;
102 blk64_t previous_block;
103 struct ext2_inode *inode;
104 struct problem_context *pctx;
105 ext2fs_block_bitmap fs_meta_blocks;
106 e2fsck_t ctx;
107 blk64_t next_lblock;
108 struct extent_tree_info eti;
109 };
110
111 struct process_inode_block {
112 ext2_ino_t ino;
113 struct ea_quota ea_ibody_quota;
114 struct ext2_inode_large inode;
115 };
116
117 struct scan_callback_struct {
118 e2fsck_t ctx;
119 char *block_buf;
120 };
121
122 /*
123 * For the inodes to process list.
124 */
125 static struct process_inode_block *inodes_to_process;
126 static int process_inode_count;
127
128 static __u64 ext2_max_sizes[EXT2_MAX_BLOCK_LOG_SIZE -
129 EXT2_MIN_BLOCK_LOG_SIZE + 1];
130
131 /*
132 * Free all memory allocated by pass1 in preparation for restarting
133 * things.
134 */
135 static void unwind_pass1(ext2_filsys fs EXT2FS_ATTR((unused)))
136 {
137 ext2fs_free_mem(&inodes_to_process);
138 inodes_to_process = 0;
139 }
140
141 /*
142 * Check to make sure a device inode is real. Returns 1 if the device
143 * checks out, 0 if not.
144 *
145 * Note: this routine is now also used to check FIFO's and Sockets,
146 * since they have the same requirement; the i_block fields should be
147 * zero.
148 */
149 int e2fsck_pass1_check_device_inode(ext2_filsys fs EXT2FS_ATTR((unused)),
150 struct ext2_inode *inode)
151 {
152 int i;
153
154 /*
155 * If the index or extents flag is set, then this is a bogus
156 * device/fifo/socket
157 */
158 if (inode->i_flags & (EXT2_INDEX_FL | EXT4_EXTENTS_FL))
159 return 0;
160
161 /*
162 * We should be able to do the test below all the time, but
163 * because the kernel doesn't forcibly clear the device
164 * inode's additional i_block fields, there are some rare
165 * occasions when a legitimate device inode will have non-zero
166 * additional i_block fields. So for now, we only complain
167 * when the immutable flag is set, which should never happen
168 * for devices. (And that's when the problem is caused, since
169 * you can't set or clear immutable flags for devices.) Once
170 * the kernel has been fixed we can change this...
171 */
172 if (inode->i_flags & (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)) {
173 for (i=4; i < EXT2_N_BLOCKS; i++)
174 if (inode->i_block[i])
175 return 0;
176 }
177 return 1;
178 }
179
180 /*
181 * Check to make sure a symlink inode is real. Returns 1 if the symlink
182 * checks out, 0 if not.
183 */
184 int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino,
185 struct ext2_inode *inode, char *buf)
186 {
187 unsigned int buflen;
188 unsigned int len;
189
190 if ((inode->i_size_high || inode->i_size == 0) ||
191 (inode->i_flags & EXT2_INDEX_FL))
192 return 0;
193
194 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
195 size_t inline_size;
196
197 if (inode->i_flags & EXT4_EXTENTS_FL)
198 return 0;
199 if (ext2fs_inline_data_size(fs, ino, &inline_size))
200 return 0;
201 if (inode->i_size != inline_size)
202 return 0;
203
204 return 1;
205 }
206
207 if (ext2fs_is_fast_symlink(inode)) {
208 if (inode->i_flags & EXT4_EXTENTS_FL)
209 return 0;
210 buf = (char *)inode->i_block;
211 buflen = sizeof(inode->i_block);
212 } else {
213 ext2_extent_handle_t handle;
214 struct ext2_extent_info info;
215 struct ext2fs_extent extent;
216 blk64_t blk;
217 int i;
218
219 if (inode->i_flags & EXT4_EXTENTS_FL) {
220 if (ext2fs_extent_open2(fs, ino, inode, &handle))
221 return 0;
222 if (ext2fs_extent_get_info(handle, &info) ||
223 (info.num_entries != 1) ||
224 (info.max_depth != 0)) {
225 ext2fs_extent_free(handle);
226 return 0;
227 }
228 if (ext2fs_extent_get(handle, EXT2_EXTENT_ROOT,
229 &extent) ||
230 (extent.e_lblk != 0) ||
231 (extent.e_len != 1)) {
232 ext2fs_extent_free(handle);
233 return 0;
234 }
235 blk = extent.e_pblk;
236 ext2fs_extent_free(handle);
237 } else {
238 blk = inode->i_block[0];
239
240 for (i = 1; i < EXT2_N_BLOCKS; i++)
241 if (inode->i_block[i])
242 return 0;
243 }
244
245 if (blk < fs->super->s_first_data_block ||
246 blk >= ext2fs_blocks_count(fs->super))
247 return 0;
248
249 if (io_channel_read_blk64(fs->io, blk, 1, buf))
250 return 0;
251
252 buflen = fs->blocksize;
253 }
254
255 if (inode->i_flags & EXT4_ENCRYPT_FL)
256 len = ext2fs_le16_to_cpu(*(__u16 *)buf) + 2;
257 else
258 len = strnlen(buf, buflen);
259
260 if (len >= buflen)
261 return 0;
262
263 if (len != inode->i_size)
264 return 0;
265 return 1;
266 }
267
268 /*
269 * If the extents or inlinedata flags are set on the inode, offer to clear 'em.
270 */
271 #define BAD_SPECIAL_FLAGS (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)
272 static void check_extents_inlinedata(e2fsck_t ctx,
273 struct problem_context *pctx)
274 {
275 if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
276 return;
277
278 if (!fix_problem(ctx, PR_1_SPECIAL_EXTENTS_IDATA, pctx))
279 return;
280
281 pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
282 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
283 }
284 #undef BAD_SPECIAL_FLAGS
285
286 /*
287 * If the immutable (or append-only) flag is set on the inode, offer
288 * to clear it.
289 */
290 #define BAD_SPECIAL_FLAGS (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)
291 static void check_immutable(e2fsck_t ctx, struct problem_context *pctx)
292 {
293 if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
294 return;
295
296 if (!fix_problem(ctx, PR_1_SET_IMMUTABLE, pctx))
297 return;
298
299 pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
300 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
301 }
302
303 /*
304 * If device, fifo or socket, check size is zero -- if not offer to
305 * clear it
306 */
307 static void check_size(e2fsck_t ctx, struct problem_context *pctx)
308 {
309 struct ext2_inode *inode = pctx->inode;
310
311 if (EXT2_I_SIZE(inode) == 0)
312 return;
313
314 if (!fix_problem(ctx, PR_1_SET_NONZSIZE, pctx))
315 return;
316
317 ext2fs_inode_size_set(ctx->fs, inode, 0);
318 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
319 }
320
321 /*
322 * For a given size, calculate how many blocks would be charged towards quota.
323 */
324 static blk64_t size_to_quota_blocks(ext2_filsys fs, size_t size)
325 {
326 blk64_t clusters;
327
328 clusters = DIV_ROUND_UP(size, fs->blocksize << fs->cluster_ratio_bits);
329 return EXT2FS_C2B(fs, clusters);
330 }
331
332 /*
333 * Check validity of EA inode. Return 0 if EA inode is valid, otherwise return
334 * the problem code.
335 */
336 static problem_t check_large_ea_inode(e2fsck_t ctx,
337 struct ext2_ext_attr_entry *entry,
338 struct problem_context *pctx,
339 blk64_t *quota_blocks)
340 {
341 struct ext2_inode inode;
342 __u32 hash;
343 errcode_t retval;
344
345 /* Check if inode is within valid range */
346 if ((entry->e_value_inum < EXT2_FIRST_INODE(ctx->fs->super)) ||
347 (entry->e_value_inum > ctx->fs->super->s_inodes_count)) {
348 pctx->num = entry->e_value_inum;
349 return PR_1_ATTR_VALUE_EA_INODE;
350 }
351
352 e2fsck_read_inode(ctx, entry->e_value_inum, &inode, "pass1");
353
354 retval = ext2fs_ext_attr_hash_entry2(ctx->fs, entry, NULL, &hash);
355 if (retval) {
356 com_err("check_large_ea_inode", retval,
357 _("while hashing entry with e_value_inum = %u"),
358 entry->e_value_inum);
359 fatal_error(ctx, 0);
360 }
361
362 if (hash == entry->e_hash) {
363 *quota_blocks = size_to_quota_blocks(ctx->fs,
364 entry->e_value_size);
365 } else {
366 /* This might be an old Lustre-style ea_inode reference. */
367 if (inode.i_mtime == pctx->ino &&
368 inode.i_generation == pctx->inode->i_generation) {
369 *quota_blocks = 0;
370 } else {
371 /* If target inode is also missing EA_INODE flag,
372 * this is likely to be a bad reference.
373 */
374 if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
375 pctx->num = entry->e_value_inum;
376 return PR_1_ATTR_VALUE_EA_INODE;
377 } else {
378 pctx->num = entry->e_hash;
379 return PR_1_ATTR_HASH;
380 }
381 }
382 }
383
384 if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
385 pctx->num = entry->e_value_inum;
386 if (fix_problem(ctx, PR_1_ATTR_SET_EA_INODE_FL, pctx)) {
387 inode.i_flags |= EXT4_EA_INODE_FL;
388 ext2fs_write_inode(ctx->fs, entry->e_value_inum,
389 &inode);
390 } else {
391 return PR_1_ATTR_NO_EA_INODE_FL;
392 }
393 }
394 return 0;
395 }
396
397 static void inc_ea_inode_refs(e2fsck_t ctx, struct problem_context *pctx,
398 struct ext2_ext_attr_entry *first, void *end)
399 {
400 struct ext2_ext_attr_entry *entry;
401
402 for (entry = first;
403 (void *)entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry);
404 entry = EXT2_EXT_ATTR_NEXT(entry)) {
405 if (!entry->e_value_inum)
406 continue;
407 if (!ctx->ea_inode_refs) {
408 pctx->errcode = ea_refcount_create(0,
409 &ctx->ea_inode_refs);
410 if (pctx->errcode) {
411 pctx->num = 4;
412 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
413 ctx->flags |= E2F_FLAG_ABORT;
414 return;
415 }
416 }
417 ea_refcount_increment(ctx->ea_inode_refs, entry->e_value_inum,
418 0);
419 }
420 }
421
422 static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx,
423 struct ea_quota *ea_ibody_quota)
424 {
425 struct ext2_super_block *sb = ctx->fs->super;
426 struct ext2_inode_large *inode;
427 struct ext2_ext_attr_entry *entry;
428 char *start, *header, *end;
429 unsigned int storage_size, remain;
430 problem_t problem = 0;
431 region_t region = 0;
432
433 ea_ibody_quota->blocks = 0;
434 ea_ibody_quota->inodes = 0;
435
436 inode = (struct ext2_inode_large *) pctx->inode;
437 storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE -
438 inode->i_extra_isize;
439 header = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
440 inode->i_extra_isize;
441 end = header + storage_size;
442 start = header + sizeof(__u32);
443 entry = (struct ext2_ext_attr_entry *) start;
444
445 /* scan all entry's headers first */
446
447 /* take finish entry 0UL into account */
448 remain = storage_size - sizeof(__u32);
449
450 region = region_create(0, storage_size);
451 if (!region) {
452 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
453 problem = 0;
454 ctx->flags |= E2F_FLAG_ABORT;
455 return;
456 }
457 if (region_allocate(region, 0, sizeof(__u32))) {
458 problem = PR_1_INODE_EA_ALLOC_COLLISION;
459 goto fix;
460 }
461
462 while (remain >= sizeof(struct ext2_ext_attr_entry) &&
463 !EXT2_EXT_IS_LAST_ENTRY(entry)) {
464 __u32 hash;
465
466 if (region_allocate(region, (char *)entry - (char *)header,
467 EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
468 problem = PR_1_INODE_EA_ALLOC_COLLISION;
469 goto fix;
470 }
471
472 /* header eats this space */
473 remain -= sizeof(struct ext2_ext_attr_entry);
474
475 /* is attribute name valid? */
476 if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) {
477 pctx->num = entry->e_name_len;
478 problem = PR_1_ATTR_NAME_LEN;
479 goto fix;
480 }
481
482 /* attribute len eats this space */
483 remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
484
485 if (entry->e_value_inum == 0) {
486 /* check value size */
487 if (entry->e_value_size > remain) {
488 pctx->num = entry->e_value_size;
489 problem = PR_1_ATTR_VALUE_SIZE;
490 goto fix;
491 }
492
493 if (entry->e_value_size &&
494 region_allocate(region,
495 sizeof(__u32) + entry->e_value_offs,
496 EXT2_EXT_ATTR_SIZE(
497 entry->e_value_size))) {
498 problem = PR_1_INODE_EA_ALLOC_COLLISION;
499 goto fix;
500 }
501
502 hash = ext2fs_ext_attr_hash_entry(entry,
503 start + entry->e_value_offs);
504
505 /* e_hash may be 0 in older inode's ea */
506 if (entry->e_hash != 0 && entry->e_hash != hash) {
507 pctx->num = entry->e_hash;
508 problem = PR_1_ATTR_HASH;
509 goto fix;
510 }
511 } else {
512 blk64_t quota_blocks;
513
514 problem = check_large_ea_inode(ctx, entry, pctx,
515 &quota_blocks);
516 if (problem != 0)
517 goto fix;
518
519 ea_ibody_quota->blocks += quota_blocks;
520 ea_ibody_quota->inodes++;
521 }
522
523 /* If EA value is stored in external inode then it does not
524 * consume space here */
525 if (entry->e_value_inum == 0)
526 remain -= entry->e_value_size;
527
528 entry = EXT2_EXT_ATTR_NEXT(entry);
529 }
530
531 if (region_allocate(region, (char *)entry - (char *)header,
532 sizeof(__u32))) {
533 problem = PR_1_INODE_EA_ALLOC_COLLISION;
534 goto fix;
535 }
536 fix:
537 if (region)
538 region_free(region);
539 /*
540 * it seems like a corruption. it's very unlikely we could repair
541 * EA(s) in automatic fashion -bzzz
542 */
543 if (problem == 0 || !fix_problem(ctx, problem, pctx)) {
544 inc_ea_inode_refs(ctx, pctx,
545 (struct ext2_ext_attr_entry *)start, end);
546 return;
547 }
548
549 /* simply remove all possible EA(s) */
550 *((__u32 *)header) = 0UL;
551 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
552 EXT2_INODE_SIZE(sb), "pass1");
553 ea_ibody_quota->blocks = 0;
554 ea_ibody_quota->inodes = 0;
555 }
556
557 static int check_inode_extra_negative_epoch(__u32 xtime, __u32 extra) {
558 return (xtime & (1U << 31)) != 0 &&
559 (extra & EXT4_EPOCH_MASK) == EXT4_EPOCH_MASK;
560 }
561
562 #define CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, xtime) \
563 check_inode_extra_negative_epoch(inode->i_##xtime, \
564 inode->i_##xtime##_extra)
565
566 /* When today's date is earlier than 2242, we assume that atimes,
567 * ctimes, crtimes, and mtimes with years in the range 2310..2378 are
568 * actually pre-1970 dates mis-encoded.
569 */
570 #define EXT4_EXTRA_NEGATIVE_DATE_CUTOFF 2 * (1LL << 32)
571
572 static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx,
573 struct ea_quota *ea_ibody_quota)
574 {
575 struct ext2_super_block *sb = ctx->fs->super;
576 struct ext2_inode_large *inode;
577 __u32 *eamagic;
578 int min, max;
579
580 ea_ibody_quota->blocks = 0;
581 ea_ibody_quota->inodes = 0;
582
583 inode = (struct ext2_inode_large *) pctx->inode;
584 if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) {
585 /* this isn't large inode. so, nothing to check */
586 return;
587 }
588
589 #if 0
590 printf("inode #%u, i_extra_size %d\n", pctx->ino,
591 inode->i_extra_isize);
592 #endif
593 /* i_extra_isize must cover i_extra_isize + i_checksum_hi at least */
594 min = sizeof(inode->i_extra_isize) + sizeof(inode->i_checksum_hi);
595 max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE;
596 /*
597 * For now we will allow i_extra_isize to be 0, but really
598 * implementations should never allow i_extra_isize to be 0
599 */
600 if (inode->i_extra_isize &&
601 (inode->i_extra_isize < min || inode->i_extra_isize > max ||
602 inode->i_extra_isize & 3)) {
603 if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
604 return;
605 if (inode->i_extra_isize < min || inode->i_extra_isize > max)
606 inode->i_extra_isize = sb->s_want_extra_isize;
607 else
608 inode->i_extra_isize = (inode->i_extra_isize + 3) & ~3;
609 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
610 EXT2_INODE_SIZE(sb), "pass1");
611 }
612
613 /* check if there is no place for an EA header */
614 if (inode->i_extra_isize >= max - sizeof(__u32))
615 return;
616
617 eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
618 inode->i_extra_isize);
619 if (*eamagic == EXT2_EXT_ATTR_MAGIC) {
620 /* it seems inode has an extended attribute(s) in body */
621 check_ea_in_inode(ctx, pctx, ea_ibody_quota);
622 }
623
624 /*
625 * If the inode's extended atime (ctime, crtime, mtime) is stored in
626 * the old, invalid format, repair it.
627 */
628 if (((sizeof(time_t) <= 4) ||
629 (((sizeof(time_t) > 4) &&
630 ctx->now < EXT4_EXTRA_NEGATIVE_DATE_CUTOFF))) &&
631 (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime) ||
632 CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime) ||
633 CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime) ||
634 CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))) {
635
636 if (!fix_problem(ctx, PR_1_EA_TIME_OUT_OF_RANGE, pctx))
637 return;
638
639 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime))
640 inode->i_atime_extra &= ~EXT4_EPOCH_MASK;
641 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime))
642 inode->i_ctime_extra &= ~EXT4_EPOCH_MASK;
643 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime))
644 inode->i_crtime_extra &= ~EXT4_EPOCH_MASK;
645 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))
646 inode->i_mtime_extra &= ~EXT4_EPOCH_MASK;
647 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
648 EXT2_INODE_SIZE(sb), "pass1");
649 }
650
651 }
652
653 /*
654 * Check to see if the inode might really be a directory, despite i_mode
655 *
656 * This is a lot of complexity for something for which I'm not really
657 * convinced happens frequently in the wild. If for any reason this
658 * causes any problems, take this code out.
659 * [tytso:20070331.0827EDT]
660 */
661 static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
662 char *buf)
663 {
664 struct ext2_inode *inode = pctx->inode;
665 struct ext2_dir_entry *dirent;
666 errcode_t retval;
667 blk64_t blk;
668 unsigned int i, rec_len, not_device = 0;
669 int extent_fs;
670 int inlinedata_fs;
671
672 /*
673 * If the mode looks OK, we believe it. If the first block in
674 * the i_block array is 0, this cannot be a directory. If the
675 * inode is extent-mapped, it is still the case that the latter
676 * cannot be 0 - the magic number in the extent header would make
677 * it nonzero.
678 */
679 if (LINUX_S_ISDIR(inode->i_mode) || LINUX_S_ISREG(inode->i_mode) ||
680 LINUX_S_ISLNK(inode->i_mode) || inode->i_block[0] == 0)
681 return;
682
683 /*
684 * Check the block numbers in the i_block array for validity:
685 * zero blocks are skipped (but the first one cannot be zero -
686 * see above), other blocks are checked against the first and
687 * max data blocks (from the the superblock) and against the
688 * block bitmap. Any invalid block found means this cannot be
689 * a directory.
690 *
691 * If there are non-zero blocks past the fourth entry, then
692 * this cannot be a device file: we remember that for the next
693 * check.
694 *
695 * For extent mapped files, we don't do any sanity checking:
696 * just try to get the phys block of logical block 0 and run
697 * with it.
698 *
699 * For inline data files, we just try to get the size of inline
700 * data. If it's true, we will treat it as a directory.
701 */
702
703 extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
704 inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
705 if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL)) {
706 size_t size;
707 __u32 dotdot;
708 unsigned int rec_len2;
709 struct ext2_dir_entry de;
710
711 if (ext2fs_inline_data_size(ctx->fs, pctx->ino, &size))
712 return;
713 /*
714 * If the size isn't a multiple of 4, it's probably not a
715 * directory??
716 */
717 if (size & 3)
718 return;
719 /*
720 * If the first 10 bytes don't look like a directory entry,
721 * it's probably not a directory.
722 */
723 memcpy(&dotdot, inode->i_block, sizeof(dotdot));
724 memcpy(&de, ((char *)inode->i_block) + EXT4_INLINE_DATA_DOTDOT_SIZE,
725 EXT2_DIR_REC_LEN(0));
726 dotdot = ext2fs_le32_to_cpu(dotdot);
727 de.inode = ext2fs_le32_to_cpu(de.inode);
728 de.rec_len = ext2fs_le16_to_cpu(de.rec_len);
729 ext2fs_get_rec_len(ctx->fs, &de, &rec_len2);
730 if (dotdot >= ctx->fs->super->s_inodes_count ||
731 (dotdot < EXT2_FIRST_INO(ctx->fs->super) &&
732 dotdot != EXT2_ROOT_INO) ||
733 de.inode >= ctx->fs->super->s_inodes_count ||
734 (de.inode < EXT2_FIRST_INO(ctx->fs->super) &&
735 de.inode != 0) ||
736 rec_len2 > EXT4_MIN_INLINE_DATA_SIZE -
737 EXT4_INLINE_DATA_DOTDOT_SIZE)
738 return;
739 /* device files never have a "system.data" entry */
740 goto isdir;
741 } else if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) {
742 /* extent mapped */
743 if (ext2fs_bmap2(ctx->fs, pctx->ino, inode, 0, 0, 0, 0,
744 &blk))
745 return;
746 /* device files are never extent mapped */
747 not_device++;
748 } else {
749 for (i=0; i < EXT2_N_BLOCKS; i++) {
750 blk = inode->i_block[i];
751 if (!blk)
752 continue;
753 if (i >= 4)
754 not_device++;
755
756 if (blk < ctx->fs->super->s_first_data_block ||
757 blk >= ext2fs_blocks_count(ctx->fs->super) ||
758 ext2fs_fast_test_block_bitmap2(ctx->block_found_map,
759 blk))
760 return; /* Invalid block, can't be dir */
761 }
762 blk = inode->i_block[0];
763 }
764
765 /*
766 * If the mode says this is a device file and the i_links_count field
767 * is sane and we have not ruled it out as a device file previously,
768 * we declare it a device file, not a directory.
769 */
770 if ((LINUX_S_ISCHR(inode->i_mode) || LINUX_S_ISBLK(inode->i_mode)) &&
771 (inode->i_links_count == 1) && !not_device)
772 return;
773
774 /* read the first block */
775 ehandler_operation(_("reading directory block"));
776 retval = ext2fs_read_dir_block4(ctx->fs, blk, buf, 0, pctx->ino);
777 ehandler_operation(0);
778 if (retval)
779 return;
780
781 dirent = (struct ext2_dir_entry *) buf;
782 retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
783 if (retval)
784 return;
785 if ((ext2fs_dirent_name_len(dirent) != 1) ||
786 (dirent->name[0] != '.') ||
787 (dirent->inode != pctx->ino) ||
788 (rec_len < 12) ||
789 (rec_len % 4) ||
790 (rec_len >= ctx->fs->blocksize - 12))
791 return;
792
793 dirent = (struct ext2_dir_entry *) (buf + rec_len);
794 retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
795 if (retval)
796 return;
797 if ((ext2fs_dirent_name_len(dirent) != 2) ||
798 (dirent->name[0] != '.') ||
799 (dirent->name[1] != '.') ||
800 (rec_len < 12) ||
801 (rec_len % 4))
802 return;
803
804 isdir:
805 if (fix_problem(ctx, PR_1_TREAT_AS_DIRECTORY, pctx)) {
806 inode->i_mode = (inode->i_mode & 07777) | LINUX_S_IFDIR;
807 e2fsck_write_inode_full(ctx, pctx->ino, inode,
808 EXT2_INODE_SIZE(ctx->fs->super),
809 "check_is_really_dir");
810 }
811 }
812
813 extern errcode_t e2fsck_setup_icount(e2fsck_t ctx, const char *icount_name,
814 int flags, ext2_icount_t hint,
815 ext2_icount_t *ret)
816 {
817 unsigned int threshold;
818 unsigned int save_type;
819 ext2_ino_t num_dirs;
820 errcode_t retval;
821 char *tdb_dir;
822 int enable;
823
824 *ret = 0;
825
826 profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
827 &tdb_dir);
828 profile_get_uint(ctx->profile, "scratch_files",
829 "numdirs_threshold", 0, 0, &threshold);
830 profile_get_boolean(ctx->profile, "scratch_files",
831 "icount", 0, 1, &enable);
832
833 retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
834 if (retval)
835 num_dirs = 1024; /* Guess */
836
837 if (enable && tdb_dir && !access(tdb_dir, W_OK) &&
838 (!threshold || num_dirs > threshold)) {
839 retval = ext2fs_create_icount_tdb(ctx->fs, tdb_dir,
840 flags, ret);
841 if (retval == 0)
842 return 0;
843 }
844 e2fsck_set_bitmap_type(ctx->fs, EXT2FS_BMAP64_RBTREE, icount_name,
845 &save_type);
846 if (ctx->options & E2F_OPT_ICOUNT_FULLMAP)
847 flags |= EXT2_ICOUNT_OPT_FULLMAP;
848 retval = ext2fs_create_icount2(ctx->fs, flags, 0, hint, ret);
849 ctx->fs->default_bitmap_type = save_type;
850 return retval;
851 }
852
853 static errcode_t recheck_bad_inode_checksum(ext2_filsys fs, ext2_ino_t ino,
854 e2fsck_t ctx,
855 struct problem_context *pctx)
856 {
857 errcode_t retval;
858 struct ext2_inode_large inode;
859
860 /*
861 * Reread inode. If we don't see checksum error, then this inode
862 * has been fixed elsewhere.
863 */
864 ctx->stashed_ino = 0;
865 retval = ext2fs_read_inode_full(fs, ino, (struct ext2_inode *)&inode,
866 sizeof(inode));
867 if (retval && retval != EXT2_ET_INODE_CSUM_INVALID)
868 return retval;
869 if (!retval)
870 return 0;
871
872 /*
873 * Checksum still doesn't match. That implies that the inode passes
874 * all the sanity checks, so maybe the checksum is simply corrupt.
875 * See if the user will go for fixing that.
876 */
877 if (!fix_problem(ctx, PR_1_INODE_ONLY_CSUM_INVALID, pctx))
878 return 0;
879
880 retval = ext2fs_write_inode_full(fs, ino, (struct ext2_inode *)&inode,
881 sizeof(inode));
882 return retval;
883 }
884
885 static void reserve_block_for_root_repair(e2fsck_t ctx)
886 {
887 blk64_t blk = 0;
888 errcode_t err;
889 ext2_filsys fs = ctx->fs;
890
891 ctx->root_repair_block = 0;
892 if (ext2fs_test_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO))
893 return;
894
895 err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
896 if (err)
897 return;
898 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
899 ctx->root_repair_block = blk;
900 }
901
902 static void reserve_block_for_lnf_repair(e2fsck_t ctx)
903 {
904 blk64_t blk = 0;
905 errcode_t err;
906 ext2_filsys fs = ctx->fs;
907 static const char name[] = "lost+found";
908 ext2_ino_t ino;
909
910 ctx->lnf_repair_block = 0;
911 if (!ext2fs_lookup(fs, EXT2_ROOT_INO, name, sizeof(name)-1, 0, &ino))
912 return;
913
914 err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
915 if (err)
916 return;
917 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
918 ctx->lnf_repair_block = blk;
919 }
920
921 static errcode_t get_inline_data_ea_size(ext2_filsys fs, ext2_ino_t ino,
922 size_t *sz)
923 {
924 void *p;
925 struct ext2_xattr_handle *handle;
926 errcode_t retval;
927
928 retval = ext2fs_xattrs_open(fs, ino, &handle);
929 if (retval)
930 return retval;
931
932 retval = ext2fs_xattrs_read(handle);
933 if (retval)
934 goto err;
935
936 retval = ext2fs_xattr_get(handle, "system.data", &p, sz);
937 if (retval)
938 goto err;
939 ext2fs_free_mem(&p);
940 err:
941 (void) ext2fs_xattrs_close(&handle);
942 return retval;
943 }
944
945 static void finish_processing_inode(e2fsck_t ctx, ext2_ino_t ino,
946 struct problem_context *pctx,
947 int failed_csum)
948 {
949 if (!failed_csum)
950 return;
951
952 /*
953 * If the inode failed the checksum and the user didn't
954 * clear the inode, test the checksum again -- if it still
955 * fails, ask the user if the checksum should be corrected.
956 */
957 pctx->errcode = recheck_bad_inode_checksum(ctx->fs, ino, ctx, pctx);
958 if (pctx->errcode)
959 ctx->flags |= E2F_FLAG_ABORT;
960 }
961 #define FINISH_INODE_LOOP(ctx, ino, pctx, failed_csum) \
962 do { \
963 finish_processing_inode((ctx), (ino), (pctx), (failed_csum)); \
964 if ((ctx)->flags & E2F_FLAG_ABORT) \
965 return; \
966 } while (0)
967
968 static int could_be_block_map(ext2_filsys fs, struct ext2_inode *inode)
969 {
970 __u32 x;
971 int i;
972
973 for (i = 0; i < EXT2_N_BLOCKS; i++) {
974 x = inode->i_block[i];
975 #ifdef WORDS_BIGENDIAN
976 x = ext2fs_swab32(x);
977 #endif
978 if (x >= ext2fs_blocks_count(fs->super))
979 return 0;
980 }
981
982 return 1;
983 }
984
985 /*
986 * Figure out what to do with an inode that has both extents and inline data
987 * inode flags set. Returns -1 if we decide to erase the inode, 0 otherwise.
988 */
989 static int fix_inline_data_extents_file(e2fsck_t ctx,
990 ext2_ino_t ino,
991 struct ext2_inode *inode,
992 int inode_size,
993 struct problem_context *pctx)
994 {
995 size_t max_inline_ea_size;
996 ext2_filsys fs = ctx->fs;
997 int dirty = 0;
998
999 /* Both feature flags not set? Just run the regular checks */
1000 if (!ext2fs_has_feature_extents(fs->super) &&
1001 !ext2fs_has_feature_inline_data(fs->super))
1002 return 0;
1003
1004 /* Clear both flags if it's a special file */
1005 if (LINUX_S_ISCHR(inode->i_mode) ||
1006 LINUX_S_ISBLK(inode->i_mode) ||
1007 LINUX_S_ISFIFO(inode->i_mode) ||
1008 LINUX_S_ISSOCK(inode->i_mode)) {
1009 check_extents_inlinedata(ctx, pctx);
1010 return 0;
1011 }
1012
1013 /* If it looks like an extent tree, try to clear inlinedata */
1014 if (ext2fs_extent_header_verify(inode->i_block,
1015 sizeof(inode->i_block)) == 0 &&
1016 fix_problem(ctx, PR_1_CLEAR_INLINE_DATA_FOR_EXTENT, pctx)) {
1017 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1018 dirty = 1;
1019 goto out;
1020 }
1021
1022 /* If it looks short enough to be inline data, try to clear extents */
1023 if (inode_size > EXT2_GOOD_OLD_INODE_SIZE)
1024 max_inline_ea_size = inode_size -
1025 (EXT2_GOOD_OLD_INODE_SIZE +
1026 ((struct ext2_inode_large *)inode)->i_extra_isize);
1027 else
1028 max_inline_ea_size = 0;
1029 if (EXT2_I_SIZE(inode) <
1030 EXT4_MIN_INLINE_DATA_SIZE + max_inline_ea_size &&
1031 fix_problem(ctx, PR_1_CLEAR_EXTENT_FOR_INLINE_DATA, pctx)) {
1032 inode->i_flags &= ~EXT4_EXTENTS_FL;
1033 dirty = 1;
1034 goto out;
1035 }
1036
1037 /*
1038 * Too big for inline data, but no evidence of extent tree -
1039 * maybe it's a block map file? If the mappings all look valid?
1040 */
1041 if (could_be_block_map(fs, inode) &&
1042 fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_FLAGS, pctx)) {
1043 #ifdef WORDS_BIGENDIAN
1044 int i;
1045
1046 for (i = 0; i < EXT2_N_BLOCKS; i++)
1047 inode->i_block[i] = ext2fs_swab32(inode->i_block[i]);
1048 #endif
1049
1050 inode->i_flags &= ~(EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL);
1051 dirty = 1;
1052 goto out;
1053 }
1054
1055 /* Oh well, just clear the busted inode. */
1056 if (fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_INODE, pctx)) {
1057 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1058 return -1;
1059 }
1060
1061 out:
1062 if (dirty)
1063 e2fsck_write_inode(ctx, ino, inode, "pass1");
1064
1065 return 0;
1066 }
1067
1068 static void pass1_readahead(e2fsck_t ctx, dgrp_t *group, ext2_ino_t *next_ino)
1069 {
1070 ext2_ino_t inodes_in_group = 0, inodes_per_block, inodes_per_buffer;
1071 dgrp_t start = *group, grp;
1072 blk64_t blocks_to_read = 0;
1073 errcode_t err = EXT2_ET_INVALID_ARGUMENT;
1074
1075 if (ctx->readahead_kb == 0)
1076 goto out;
1077
1078 /* Keep iterating groups until we have enough to readahead */
1079 inodes_per_block = EXT2_INODES_PER_BLOCK(ctx->fs->super);
1080 for (grp = start; grp < ctx->fs->group_desc_count; grp++) {
1081 if (ext2fs_bg_flags_test(ctx->fs, grp, EXT2_BG_INODE_UNINIT))
1082 continue;
1083 inodes_in_group = ctx->fs->super->s_inodes_per_group -
1084 ext2fs_bg_itable_unused(ctx->fs, grp);
1085 blocks_to_read += (inodes_in_group + inodes_per_block - 1) /
1086 inodes_per_block;
1087 if (blocks_to_read * ctx->fs->blocksize >
1088 ctx->readahead_kb * 1024)
1089 break;
1090 }
1091
1092 err = e2fsck_readahead(ctx->fs, E2FSCK_READA_ITABLE, start,
1093 grp - start + 1);
1094 if (err == EAGAIN) {
1095 ctx->readahead_kb /= 2;
1096 err = 0;
1097 }
1098
1099 out:
1100 if (err) {
1101 /* Error; disable itable readahead */
1102 *group = ctx->fs->group_desc_count;
1103 *next_ino = ctx->fs->super->s_inodes_count;
1104 } else {
1105 /*
1106 * Don't do more readahead until we've reached the first inode
1107 * of the last inode scan buffer block for the last group.
1108 */
1109 *group = grp + 1;
1110 inodes_per_buffer = (ctx->inode_buffer_blocks ?
1111 ctx->inode_buffer_blocks :
1112 EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS) *
1113 ctx->fs->blocksize /
1114 EXT2_INODE_SIZE(ctx->fs->super);
1115 inodes_in_group--;
1116 *next_ino = inodes_in_group -
1117 (inodes_in_group % inodes_per_buffer) + 1 +
1118 (grp * ctx->fs->super->s_inodes_per_group);
1119 }
1120 }
1121
1122 /*
1123 * Check if the passed ino is one of the used superblock quota inodes.
1124 *
1125 * Before the quota inodes were journaled, older superblock quota inodes
1126 * were just regular files in the filesystem and not reserved inodes. This
1127 * checks if the passed ino is one of the s_*_quota_inum superblock fields,
1128 * which may not always be the same as the EXT4_*_QUOTA_INO fields.
1129 */
1130 static int quota_inum_is_super(struct ext2_super_block *sb, ext2_ino_t ino)
1131 {
1132 enum quota_type qtype;
1133
1134 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1135 if (*quota_sb_inump(sb, qtype) == ino)
1136 return 1;
1137
1138 return 0;
1139 }
1140
1141 /*
1142 * Check if the passed ino is one of the reserved quota inodes.
1143 * This checks if the inode number is one of the reserved EXT4_*_QUOTA_INO
1144 * inodes. These inodes may or may not be in use by the quota feature.
1145 */
1146 static int quota_inum_is_reserved(ext2_filsys fs, ext2_ino_t ino)
1147 {
1148 enum quota_type qtype;
1149
1150 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1151 if (quota_type2inum(qtype, fs->super) == ino)
1152 return 1;
1153
1154 return 0;
1155 }
1156
1157 void e2fsck_pass1(e2fsck_t ctx)
1158 {
1159 int i;
1160 __u64 max_sizes;
1161 ext2_filsys fs = ctx->fs;
1162 ext2_ino_t ino = 0;
1163 struct ext2_inode *inode = NULL;
1164 ext2_inode_scan scan = NULL;
1165 char *block_buf = NULL;
1166 #ifdef RESOURCE_TRACK
1167 struct resource_track rtrack;
1168 #endif
1169 unsigned char frag, fsize;
1170 struct problem_context pctx;
1171 struct scan_callback_struct scan_struct;
1172 struct ext2_super_block *sb = ctx->fs->super;
1173 const char *old_op;
1174 const char *eop_next_inode = _("getting next inode from scan");
1175 int imagic_fs, extent_fs, inlinedata_fs, casefold_fs;
1176 int low_dtime_check = 1;
1177 unsigned int inode_size = EXT2_INODE_SIZE(fs->super);
1178 unsigned int bufsize;
1179 int failed_csum = 0;
1180 ext2_ino_t ino_threshold = 0;
1181 dgrp_t ra_group = 0;
1182 struct ea_quota ea_ibody_quota;
1183
1184 init_resource_track(&rtrack, ctx->fs->io);
1185 clear_problem_context(&pctx);
1186
1187 /* If we can do readahead, figure out how many groups to pull in. */
1188 if (!e2fsck_can_readahead(ctx->fs))
1189 ctx->readahead_kb = 0;
1190 else if (ctx->readahead_kb == ~0ULL)
1191 ctx->readahead_kb = e2fsck_guess_readahead(ctx->fs);
1192 pass1_readahead(ctx, &ra_group, &ino_threshold);
1193
1194 if (!(ctx->options & E2F_OPT_PREEN))
1195 fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
1196
1197 if (ext2fs_has_feature_dir_index(fs->super) &&
1198 !(ctx->options & E2F_OPT_NO)) {
1199 if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
1200 ctx->dirs_to_hash = 0;
1201 }
1202
1203 #ifdef MTRACE
1204 mtrace_print("Pass 1");
1205 #endif
1206
1207 #define EXT2_BPP(bits) (1ULL << ((bits) - 2))
1208
1209 for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
1210 max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
1211 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
1212 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
1213 max_sizes = (max_sizes * (1UL << i));
1214 ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
1215 }
1216 #undef EXT2_BPP
1217
1218 imagic_fs = ext2fs_has_feature_imagic_inodes(sb);
1219 extent_fs = ext2fs_has_feature_extents(sb);
1220 inlinedata_fs = ext2fs_has_feature_inline_data(sb);
1221 casefold_fs = ext2fs_has_feature_casefold(sb);
1222
1223 /*
1224 * Allocate bitmaps structures
1225 */
1226 pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("in-use inode map"),
1227 EXT2FS_BMAP64_RBTREE,
1228 "inode_used_map",
1229 &ctx->inode_used_map);
1230 if (pctx.errcode) {
1231 pctx.num = 1;
1232 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1233 ctx->flags |= E2F_FLAG_ABORT;
1234 return;
1235 }
1236 pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1237 _("directory inode map"),
1238 EXT2FS_BMAP64_AUTODIR,
1239 "inode_dir_map", &ctx->inode_dir_map);
1240 if (pctx.errcode) {
1241 pctx.num = 2;
1242 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1243 ctx->flags |= E2F_FLAG_ABORT;
1244 return;
1245 }
1246 pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1247 _("regular file inode map"), EXT2FS_BMAP64_RBTREE,
1248 "inode_reg_map", &ctx->inode_reg_map);
1249 if (pctx.errcode) {
1250 pctx.num = 6;
1251 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1252 ctx->flags |= E2F_FLAG_ABORT;
1253 return;
1254 }
1255 pctx.errcode = e2fsck_allocate_subcluster_bitmap(fs,
1256 _("in-use block map"), EXT2FS_BMAP64_RBTREE,
1257 "block_found_map", &ctx->block_found_map);
1258 if (pctx.errcode) {
1259 pctx.num = 1;
1260 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1261 ctx->flags |= E2F_FLAG_ABORT;
1262 return;
1263 }
1264 pctx.errcode = e2fsck_allocate_block_bitmap(fs,
1265 _("metadata block map"), EXT2FS_BMAP64_RBTREE,
1266 "block_metadata_map", &ctx->block_metadata_map);
1267 if (pctx.errcode) {
1268 pctx.num = 1;
1269 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1270 ctx->flags |= E2F_FLAG_ABORT;
1271 return;
1272 }
1273 pctx.errcode = e2fsck_setup_icount(ctx, "inode_link_info", 0, NULL,
1274 &ctx->inode_link_info);
1275 if (pctx.errcode) {
1276 fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
1277 ctx->flags |= E2F_FLAG_ABORT;
1278 return;
1279 }
1280 bufsize = inode_size;
1281 if (bufsize < sizeof(struct ext2_inode_large))
1282 bufsize = sizeof(struct ext2_inode_large);
1283 inode = (struct ext2_inode *)
1284 e2fsck_allocate_memory(ctx, bufsize, "scratch inode");
1285
1286 inodes_to_process = (struct process_inode_block *)
1287 e2fsck_allocate_memory(ctx,
1288 (ctx->process_inode_size *
1289 sizeof(struct process_inode_block)),
1290 "array of inodes to process");
1291 process_inode_count = 0;
1292
1293 pctx.errcode = ext2fs_init_dblist(fs, 0);
1294 if (pctx.errcode) {
1295 fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
1296 ctx->flags |= E2F_FLAG_ABORT;
1297 goto endit;
1298 }
1299
1300 /*
1301 * If the last orphan field is set, clear it, since the pass1
1302 * processing will automatically find and clear the orphans.
1303 * In the future, we may want to try using the last_orphan
1304 * linked list ourselves, but for now, we clear it so that the
1305 * ext3 mount code won't get confused.
1306 */
1307 if (!(ctx->options & E2F_OPT_READONLY)) {
1308 if (fs->super->s_last_orphan) {
1309 fs->super->s_last_orphan = 0;
1310 ext2fs_mark_super_dirty(fs);
1311 }
1312 }
1313
1314 mark_table_blocks(ctx);
1315 pctx.errcode = ext2fs_convert_subcluster_bitmap(fs,
1316 &ctx->block_found_map);
1317 if (pctx.errcode) {
1318 fix_problem(ctx, PR_1_CONVERT_SUBCLUSTER, &pctx);
1319 ctx->flags |= E2F_FLAG_ABORT;
1320 goto endit;
1321 }
1322 block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
1323 "block interate buffer");
1324 if (EXT2_INODE_SIZE(fs->super) == EXT2_GOOD_OLD_INODE_SIZE)
1325 e2fsck_use_inode_shortcuts(ctx, 1);
1326 e2fsck_intercept_block_allocations(ctx);
1327 old_op = ehandler_operation(_("opening inode scan"));
1328 pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
1329 &scan);
1330 ehandler_operation(old_op);
1331 if (pctx.errcode) {
1332 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1333 ctx->flags |= E2F_FLAG_ABORT;
1334 goto endit;
1335 }
1336 ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE |
1337 EXT2_SF_WARN_GARBAGE_INODES, 0);
1338 ctx->stashed_inode = inode;
1339 scan_struct.ctx = ctx;
1340 scan_struct.block_buf = block_buf;
1341 ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
1342 if (ctx->progress && ((ctx->progress)(ctx, 1, 0,
1343 ctx->fs->group_desc_count)))
1344 goto endit;
1345 if ((fs->super->s_wtime &&
1346 fs->super->s_wtime < fs->super->s_inodes_count) ||
1347 (fs->super->s_mtime &&
1348 fs->super->s_mtime < fs->super->s_inodes_count) ||
1349 (fs->super->s_mkfs_time &&
1350 fs->super->s_mkfs_time < fs->super->s_inodes_count))
1351 low_dtime_check = 0;
1352
1353 if (ext2fs_has_feature_mmp(fs->super) &&
1354 fs->super->s_mmp_block > fs->super->s_first_data_block &&
1355 fs->super->s_mmp_block < ext2fs_blocks_count(fs->super))
1356 ext2fs_mark_block_bitmap2(ctx->block_found_map,
1357 fs->super->s_mmp_block);
1358
1359 /* Set up ctx->lost_and_found if possible */
1360 (void) e2fsck_get_lost_and_found(ctx, 0);
1361
1362 while (1) {
1363 if (ino % (fs->super->s_inodes_per_group * 4) == 1) {
1364 if (e2fsck_mmp_update(fs))
1365 fatal_error(ctx, 0);
1366 }
1367 old_op = ehandler_operation(eop_next_inode);
1368 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
1369 inode, inode_size);
1370 if (ino > ino_threshold)
1371 pass1_readahead(ctx, &ra_group, &ino_threshold);
1372 ehandler_operation(old_op);
1373 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1374 goto endit;
1375 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
1376 /*
1377 * If badblocks says badblocks is bad, offer to clear
1378 * the list, update the in-core bb list, and restart
1379 * the inode scan.
1380 */
1381 if (ino == EXT2_BAD_INO &&
1382 fix_problem(ctx, PR_1_BADBLOCKS_IN_BADBLOCKS,
1383 &pctx)) {
1384 errcode_t err;
1385
1386 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1387 ext2fs_badblocks_list_free(ctx->fs->badblocks);
1388 ctx->fs->badblocks = NULL;
1389 err = ext2fs_read_bb_inode(ctx->fs,
1390 &ctx->fs->badblocks);
1391 if (err) {
1392 fix_problem(ctx, PR_1_ISCAN_ERROR,
1393 &pctx);
1394 ctx->flags |= E2F_FLAG_ABORT;
1395 goto endit;
1396 }
1397 err = ext2fs_inode_scan_goto_blockgroup(scan,
1398 0);
1399 if (err) {
1400 fix_problem(ctx, PR_1_ISCAN_ERROR,
1401 &pctx);
1402 ctx->flags |= E2F_FLAG_ABORT;
1403 goto endit;
1404 }
1405 continue;
1406 }
1407 if (!ctx->inode_bb_map)
1408 alloc_bb_map(ctx);
1409 ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino);
1410 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1411 continue;
1412 }
1413 if (pctx.errcode &&
1414 pctx.errcode != EXT2_ET_INODE_CSUM_INVALID &&
1415 pctx.errcode != EXT2_ET_INODE_IS_GARBAGE) {
1416 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1417 ctx->flags |= E2F_FLAG_ABORT;
1418 goto endit;
1419 }
1420 if (!ino)
1421 break;
1422 pctx.ino = ino;
1423 pctx.inode = inode;
1424 ctx->stashed_ino = ino;
1425
1426 /* Clear trashed inode? */
1427 if (pctx.errcode == EXT2_ET_INODE_IS_GARBAGE &&
1428 inode->i_links_count > 0 &&
1429 fix_problem(ctx, PR_1_INODE_IS_GARBAGE, &pctx)) {
1430 pctx.errcode = 0;
1431 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1432 }
1433 failed_csum = pctx.errcode != 0;
1434
1435 /*
1436 * Check for inodes who might have been part of the
1437 * orphaned list linked list. They should have gotten
1438 * dealt with by now, unless the list had somehow been
1439 * corrupted.
1440 *
1441 * FIXME: In the future, inodes which are still in use
1442 * (and which are therefore) pending truncation should
1443 * be handled specially. Right now we just clear the
1444 * dtime field, and the normal e2fsck handling of
1445 * inodes where i_size and the inode blocks are
1446 * inconsistent is to fix i_size, instead of releasing
1447 * the extra blocks. This won't catch the inodes that
1448 * was at the end of the orphan list, but it's better
1449 * than nothing. The right answer is that there
1450 * shouldn't be any bugs in the orphan list handling. :-)
1451 */
1452 if (inode->i_dtime && low_dtime_check &&
1453 inode->i_dtime < ctx->fs->super->s_inodes_count) {
1454 if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
1455 inode->i_dtime = inode->i_links_count ?
1456 0 : ctx->now;
1457 e2fsck_write_inode(ctx, ino, inode,
1458 "pass1");
1459 failed_csum = 0;
1460 }
1461 }
1462
1463 if (inode->i_links_count) {
1464 pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
1465 ino, inode->i_links_count);
1466 if (pctx.errcode) {
1467 pctx.num = inode->i_links_count;
1468 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
1469 ctx->flags |= E2F_FLAG_ABORT;
1470 goto endit;
1471 }
1472 } else if ((ino >= EXT2_FIRST_INODE(fs->super)) &&
1473 !quota_inum_is_reserved(fs, ino)) {
1474 if (!inode->i_dtime && inode->i_mode) {
1475 if (fix_problem(ctx,
1476 PR_1_ZERO_DTIME, &pctx)) {
1477 inode->i_dtime = ctx->now;
1478 e2fsck_write_inode(ctx, ino, inode,
1479 "pass1");
1480 failed_csum = 0;
1481 }
1482 }
1483 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1484 continue;
1485 }
1486
1487 if ((inode->i_flags & EXT4_CASEFOLD_FL) &&
1488 ((!LINUX_S_ISDIR(inode->i_mode) &&
1489 fix_problem(ctx, PR_1_CASEFOLD_NONDIR, &pctx)) ||
1490 (!casefold_fs &&
1491 fix_problem(ctx, PR_1_CASEFOLD_FEATURE, &pctx)))) {
1492 inode->i_flags &= ~EXT4_CASEFOLD_FL;
1493 e2fsck_write_inode(ctx, ino, inode, "pass1");
1494 }
1495
1496 /* Conflicting inlinedata/extents inode flags? */
1497 if ((inode->i_flags & EXT4_INLINE_DATA_FL) &&
1498 (inode->i_flags & EXT4_EXTENTS_FL)) {
1499 int res = fix_inline_data_extents_file(ctx, ino, inode,
1500 inode_size,
1501 &pctx);
1502 if (res < 0) {
1503 /* skip FINISH_INODE_LOOP */
1504 continue;
1505 }
1506 }
1507
1508 /* Test for incorrect inline_data flags settings. */
1509 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && !inlinedata_fs &&
1510 (ino >= EXT2_FIRST_INODE(fs->super))) {
1511 size_t size = 0;
1512
1513 pctx.errcode = get_inline_data_ea_size(fs, ino, &size);
1514 if (!pctx.errcode &&
1515 fix_problem(ctx, PR_1_INLINE_DATA_FEATURE, &pctx)) {
1516 ext2fs_set_feature_inline_data(sb);
1517 ext2fs_mark_super_dirty(fs);
1518 inlinedata_fs = 1;
1519 } else if (fix_problem(ctx, PR_1_INLINE_DATA_SET, &pctx)) {
1520 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1521 /* skip FINISH_INODE_LOOP */
1522 continue;
1523 }
1524 }
1525
1526 /* Test for inline data flag but no attr */
1527 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && inlinedata_fs &&
1528 (ino >= EXT2_FIRST_INODE(fs->super))) {
1529 size_t size = 0;
1530 errcode_t err;
1531 int flags;
1532
1533 flags = fs->flags;
1534 if (failed_csum)
1535 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
1536 err = get_inline_data_ea_size(fs, ino, &size);
1537 fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
1538 (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
1539
1540 switch (err) {
1541 case 0:
1542 /* Everything is awesome... */
1543 break;
1544 case EXT2_ET_BAD_EA_BLOCK_NUM:
1545 case EXT2_ET_BAD_EA_HASH:
1546 case EXT2_ET_BAD_EA_HEADER:
1547 case EXT2_ET_EA_BAD_NAME_LEN:
1548 case EXT2_ET_EA_BAD_VALUE_SIZE:
1549 case EXT2_ET_EA_KEY_NOT_FOUND:
1550 case EXT2_ET_EA_NO_SPACE:
1551 case EXT2_ET_MISSING_EA_FEATURE:
1552 case EXT2_ET_INLINE_DATA_CANT_ITERATE:
1553 case EXT2_ET_INLINE_DATA_NO_BLOCK:
1554 case EXT2_ET_INLINE_DATA_NO_SPACE:
1555 case EXT2_ET_NO_INLINE_DATA:
1556 case EXT2_ET_EXT_ATTR_CSUM_INVALID:
1557 case EXT2_ET_EA_BAD_VALUE_OFFSET:
1558 case EXT2_ET_EA_INODE_CORRUPTED:
1559 /* broken EA or no system.data EA; truncate */
1560 if (fix_problem(ctx, PR_1_INLINE_DATA_NO_ATTR,
1561 &pctx)) {
1562 err = ext2fs_inode_size_set(fs, inode, 0);
1563 if (err) {
1564 pctx.errcode = err;
1565 ctx->flags |= E2F_FLAG_ABORT;
1566 goto endit;
1567 }
1568 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1569 memset(&inode->i_block, 0,
1570 sizeof(inode->i_block));
1571 e2fsck_write_inode(ctx, ino, inode,
1572 "pass1");
1573 failed_csum = 0;
1574 }
1575 break;
1576 default:
1577 /* Some other kind of non-xattr error? */
1578 pctx.errcode = err;
1579 ctx->flags |= E2F_FLAG_ABORT;
1580 goto endit;
1581 }
1582 }
1583
1584 /*
1585 * Test for incorrect extent flag settings.
1586 *
1587 * On big-endian machines we must be careful:
1588 * When the inode is read, the i_block array is not swapped
1589 * if the extent flag is set. Therefore if we are testing
1590 * for or fixing a wrongly-set flag, we must potentially
1591 * (un)swap before testing, or after fixing.
1592 */
1593
1594 /*
1595 * In this case the extents flag was set when read, so
1596 * extent_header_verify is ok. If the inode is cleared,
1597 * no need to swap... so no extra swapping here.
1598 */
1599 if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs &&
1600 (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1601 (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) {
1602 if ((ext2fs_extent_header_verify(inode->i_block,
1603 sizeof(inode->i_block)) == 0) &&
1604 fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) {
1605 ext2fs_set_feature_extents(sb);
1606 ext2fs_mark_super_dirty(fs);
1607 extent_fs = 1;
1608 } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) {
1609 clear_inode:
1610 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1611 if (ino == EXT2_BAD_INO)
1612 ext2fs_mark_inode_bitmap2(ctx->inode_used_map,
1613 ino);
1614 /* skip FINISH_INODE_LOOP */
1615 continue;
1616 }
1617 }
1618
1619 /*
1620 * For big-endian machines:
1621 * If the inode didn't have the extents flag set when it
1622 * was read, then the i_blocks array was swapped. To test
1623 * as an extents header, we must swap it back first.
1624 * IF we then set the extents flag, the entire i_block
1625 * array must be un/re-swapped to make it proper extents data.
1626 */
1627 if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) &&
1628 (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1629 (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) &&
1630 (LINUX_S_ISREG(inode->i_mode) ||
1631 LINUX_S_ISDIR(inode->i_mode))) {
1632 void *ehp;
1633 #ifdef WORDS_BIGENDIAN
1634 __u32 tmp_block[EXT2_N_BLOCKS];
1635
1636 for (i = 0; i < EXT2_N_BLOCKS; i++)
1637 tmp_block[i] = ext2fs_swab32(inode->i_block[i]);
1638 ehp = tmp_block;
1639 #else
1640 ehp = inode->i_block;
1641 #endif
1642 if ((ext2fs_extent_header_verify(ehp,
1643 sizeof(inode->i_block)) == 0) &&
1644 (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) {
1645 inode->i_flags |= EXT4_EXTENTS_FL;
1646 #ifdef WORDS_BIGENDIAN
1647 memcpy(inode->i_block, tmp_block,
1648 sizeof(inode->i_block));
1649 #endif
1650 e2fsck_write_inode(ctx, ino, inode, "pass1");
1651 failed_csum = 0;
1652 }
1653 }
1654
1655 if (ino == EXT2_BAD_INO) {
1656 struct process_block_struct pb;
1657
1658 if ((failed_csum || inode->i_mode || inode->i_uid ||
1659 inode->i_gid || inode->i_links_count ||
1660 (inode->i_flags & EXT4_INLINE_DATA_FL) ||
1661 inode->i_file_acl) &&
1662 fix_problem(ctx, PR_1_INVALID_BAD_INODE, &pctx)) {
1663 memset(inode, 0, sizeof(struct ext2_inode));
1664 e2fsck_write_inode(ctx, ino, inode,
1665 "clear bad inode");
1666 failed_csum = 0;
1667 }
1668
1669 pctx.errcode = ext2fs_copy_bitmap(ctx->block_found_map,
1670 &pb.fs_meta_blocks);
1671 if (pctx.errcode) {
1672 pctx.num = 4;
1673 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1674 ctx->flags |= E2F_FLAG_ABORT;
1675 goto endit;
1676 }
1677 pb.ino = EXT2_BAD_INO;
1678 pb.num_blocks = pb.last_block = 0;
1679 pb.last_db_block = -1;
1680 pb.num_illegal_blocks = 0;
1681 pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
1682 pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
1683 pb.inode = inode;
1684 pb.pctx = &pctx;
1685 pb.ctx = ctx;
1686 pctx.errcode = ext2fs_block_iterate3(fs, ino, 0,
1687 block_buf, process_bad_block, &pb);
1688 ext2fs_free_block_bitmap(pb.fs_meta_blocks);
1689 if (pctx.errcode) {
1690 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
1691 ctx->flags |= E2F_FLAG_ABORT;
1692 goto endit;
1693 }
1694 if (pb.bbcheck)
1695 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
1696 ctx->flags |= E2F_FLAG_ABORT;
1697 goto endit;
1698 }
1699 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1700 clear_problem_context(&pctx);
1701 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1702 continue;
1703 } else if (ino == EXT2_ROOT_INO) {
1704 /*
1705 * Make sure the root inode is a directory; if
1706 * not, offer to clear it. It will be
1707 * regenerated in pass #3.
1708 */
1709 if (!LINUX_S_ISDIR(inode->i_mode)) {
1710 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx))
1711 goto clear_inode;
1712 }
1713 /*
1714 * If dtime is set, offer to clear it. mke2fs
1715 * version 0.2b created filesystems with the
1716 * dtime field set for the root and lost+found
1717 * directories. We won't worry about
1718 * /lost+found, since that can be regenerated
1719 * easily. But we will fix the root directory
1720 * as a special case.
1721 */
1722 if (inode->i_dtime && inode->i_links_count) {
1723 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
1724 inode->i_dtime = 0;
1725 e2fsck_write_inode(ctx, ino, inode,
1726 "pass1");
1727 failed_csum = 0;
1728 }
1729 }
1730 } else if (ino == EXT2_JOURNAL_INO) {
1731 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1732 if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
1733 if (!LINUX_S_ISREG(inode->i_mode) &&
1734 fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
1735 &pctx)) {
1736 inode->i_mode = LINUX_S_IFREG;
1737 e2fsck_write_inode(ctx, ino, inode,
1738 "pass1");
1739 failed_csum = 0;
1740 }
1741 check_blocks(ctx, &pctx, block_buf, NULL);
1742 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1743 continue;
1744 }
1745 if ((inode->i_links_count ||
1746 inode->i_blocks || inode->i_block[0]) &&
1747 fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
1748 &pctx)) {
1749 memset(inode, 0, inode_size);
1750 ext2fs_icount_store(ctx->inode_link_info,
1751 ino, 0);
1752 e2fsck_write_inode_full(ctx, ino, inode,
1753 inode_size, "pass1");
1754 failed_csum = 0;
1755 }
1756 } else if (quota_inum_is_reserved(fs, ino)) {
1757 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1758 if (ext2fs_has_feature_quota(fs->super) &&
1759 quota_inum_is_super(fs->super, ino)) {
1760 if (!LINUX_S_ISREG(inode->i_mode) &&
1761 fix_problem(ctx, PR_1_QUOTA_BAD_MODE,
1762 &pctx)) {
1763 inode->i_mode = LINUX_S_IFREG;
1764 e2fsck_write_inode(ctx, ino, inode,
1765 "pass1");
1766 failed_csum = 0;
1767 }
1768 check_blocks(ctx, &pctx, block_buf, NULL);
1769 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1770 continue;
1771 }
1772 if ((inode->i_links_count ||
1773 inode->i_blocks || inode->i_block[0]) &&
1774 fix_problem(ctx, PR_1_QUOTA_INODE_NOT_CLEAR,
1775 &pctx)) {
1776 memset(inode, 0, inode_size);
1777 ext2fs_icount_store(ctx->inode_link_info,
1778 ino, 0);
1779 e2fsck_write_inode_full(ctx, ino, inode,
1780 inode_size, "pass1");
1781 failed_csum = 0;
1782 }
1783 } else if (ino < EXT2_FIRST_INODE(fs->super)) {
1784 problem_t problem = 0;
1785
1786 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1787 if (ino == EXT2_BOOT_LOADER_INO) {
1788 if (LINUX_S_ISDIR(inode->i_mode))
1789 problem = PR_1_RESERVED_BAD_MODE;
1790 } else if (ino == EXT2_RESIZE_INO) {
1791 if (inode->i_mode &&
1792 !LINUX_S_ISREG(inode->i_mode))
1793 problem = PR_1_RESERVED_BAD_MODE;
1794 } else {
1795 if (inode->i_mode != 0)
1796 problem = PR_1_RESERVED_BAD_MODE;
1797 }
1798 if (problem) {
1799 if (fix_problem(ctx, problem, &pctx)) {
1800 inode->i_mode = 0;
1801 e2fsck_write_inode(ctx, ino, inode,
1802 "pass1");
1803 failed_csum = 0;
1804 }
1805 }
1806 check_blocks(ctx, &pctx, block_buf, NULL);
1807 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1808 continue;
1809 }
1810
1811 if (!inode->i_links_count) {
1812 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1813 continue;
1814 }
1815 /*
1816 * n.b. 0.3c ext2fs code didn't clear i_links_count for
1817 * deleted files. Oops.
1818 *
1819 * Since all new ext2 implementations get this right,
1820 * we now assume that the case of non-zero
1821 * i_links_count and non-zero dtime means that we
1822 * should keep the file, not delete it.
1823 *
1824 */
1825 if (inode->i_dtime) {
1826 if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
1827 inode->i_dtime = 0;
1828 e2fsck_write_inode(ctx, ino, inode, "pass1");
1829 failed_csum = 0;
1830 }
1831 }
1832
1833 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1834 switch (fs->super->s_creator_os) {
1835 case EXT2_OS_HURD:
1836 frag = inode->osd2.hurd2.h_i_frag;
1837 fsize = inode->osd2.hurd2.h_i_fsize;
1838 break;
1839 default:
1840 frag = fsize = 0;
1841 }
1842
1843 if (inode->i_faddr || frag || fsize ||
1844 (!ext2fs_has_feature_largedir(fs->super) &&
1845 (LINUX_S_ISDIR(inode->i_mode) && inode->i_size_high)))
1846 mark_inode_bad(ctx, ino);
1847 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
1848 !ext2fs_has_feature_64bit(fs->super) &&
1849 inode->osd2.linux2.l_i_file_acl_high != 0)
1850 mark_inode_bad(ctx, ino);
1851 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
1852 !ext2fs_has_feature_huge_file(fs->super) &&
1853 (inode->osd2.linux2.l_i_blocks_hi != 0))
1854 mark_inode_bad(ctx, ino);
1855 if (inode->i_flags & EXT2_IMAGIC_FL) {
1856 if (imagic_fs) {
1857 if (!ctx->inode_imagic_map)
1858 alloc_imagic_map(ctx);
1859 ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map,
1860 ino);
1861 } else {
1862 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
1863 inode->i_flags &= ~EXT2_IMAGIC_FL;
1864 e2fsck_write_inode(ctx, ino,
1865 inode, "pass1");
1866 failed_csum = 0;
1867 }
1868 }
1869 }
1870
1871 check_inode_extra_space(ctx, &pctx, &ea_ibody_quota);
1872 check_is_really_dir(ctx, &pctx, block_buf);
1873
1874 /*
1875 * ext2fs_inode_has_valid_blocks2 does not actually look
1876 * at i_block[] values, so not endian-sensitive here.
1877 */
1878 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) &&
1879 LINUX_S_ISLNK(inode->i_mode) &&
1880 !ext2fs_inode_has_valid_blocks2(fs, inode) &&
1881 fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) {
1882 inode->i_flags &= ~EXT4_EXTENTS_FL;
1883 e2fsck_write_inode(ctx, ino, inode, "pass1");
1884 failed_csum = 0;
1885 }
1886
1887 if (LINUX_S_ISDIR(inode->i_mode)) {
1888 ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
1889 e2fsck_add_dir_info(ctx, ino, 0);
1890 ctx->fs_directory_count++;
1891 if (inode->i_flags & EXT4_ENCRYPT_FL)
1892 add_encrypted_dir(ctx, ino);
1893 } else if (LINUX_S_ISREG (inode->i_mode)) {
1894 ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino);
1895 ctx->fs_regular_count++;
1896 } else if (LINUX_S_ISCHR (inode->i_mode) &&
1897 e2fsck_pass1_check_device_inode(fs, inode)) {
1898 check_extents_inlinedata(ctx, &pctx);
1899 check_immutable(ctx, &pctx);
1900 check_size(ctx, &pctx);
1901 ctx->fs_chardev_count++;
1902 } else if (LINUX_S_ISBLK (inode->i_mode) &&
1903 e2fsck_pass1_check_device_inode(fs, inode)) {
1904 check_extents_inlinedata(ctx, &pctx);
1905 check_immutable(ctx, &pctx);
1906 check_size(ctx, &pctx);
1907 ctx->fs_blockdev_count++;
1908 } else if (LINUX_S_ISLNK (inode->i_mode) &&
1909 e2fsck_pass1_check_symlink(fs, ino, inode,
1910 block_buf)) {
1911 check_immutable(ctx, &pctx);
1912 ctx->fs_symlinks_count++;
1913 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
1914 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1915 continue;
1916 } else if (ext2fs_is_fast_symlink(inode)) {
1917 ctx->fs_fast_symlinks_count++;
1918 check_blocks(ctx, &pctx, block_buf,
1919 &ea_ibody_quota);
1920 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1921 continue;
1922 }
1923 }
1924 else if (LINUX_S_ISFIFO (inode->i_mode) &&
1925 e2fsck_pass1_check_device_inode(fs, inode)) {
1926 check_extents_inlinedata(ctx, &pctx);
1927 check_immutable(ctx, &pctx);
1928 check_size(ctx, &pctx);
1929 ctx->fs_fifo_count++;
1930 } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
1931 e2fsck_pass1_check_device_inode(fs, inode)) {
1932 check_extents_inlinedata(ctx, &pctx);
1933 check_immutable(ctx, &pctx);
1934 check_size(ctx, &pctx);
1935 ctx->fs_sockets_count++;
1936 } else
1937 mark_inode_bad(ctx, ino);
1938 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1939 !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
1940 if (inode->i_block[EXT2_IND_BLOCK])
1941 ctx->fs_ind_count++;
1942 if (inode->i_block[EXT2_DIND_BLOCK])
1943 ctx->fs_dind_count++;
1944 if (inode->i_block[EXT2_TIND_BLOCK])
1945 ctx->fs_tind_count++;
1946 }
1947 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1948 !(inode->i_flags & EXT4_INLINE_DATA_FL) &&
1949 (inode->i_block[EXT2_IND_BLOCK] ||
1950 inode->i_block[EXT2_DIND_BLOCK] ||
1951 inode->i_block[EXT2_TIND_BLOCK] ||
1952 ext2fs_file_acl_block(fs, inode))) {
1953 struct process_inode_block *itp;
1954
1955 itp = &inodes_to_process[process_inode_count];
1956 itp->ino = ino;
1957 itp->ea_ibody_quota = ea_ibody_quota;
1958 if (inode_size < sizeof(struct ext2_inode_large))
1959 memcpy(&itp->inode, inode, inode_size);
1960 else
1961 memcpy(&itp->inode, inode, sizeof(itp->inode));
1962 process_inode_count++;
1963 } else
1964 check_blocks(ctx, &pctx, block_buf, &ea_ibody_quota);
1965
1966 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1967
1968 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1969 goto endit;
1970
1971 if (process_inode_count >= ctx->process_inode_size) {
1972 process_inodes(ctx, block_buf);
1973
1974 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1975 goto endit;
1976 }
1977 }
1978 process_inodes(ctx, block_buf);
1979 ext2fs_close_inode_scan(scan);
1980 scan = NULL;
1981
1982 reserve_block_for_root_repair(ctx);
1983 reserve_block_for_lnf_repair(ctx);
1984
1985 /*
1986 * If any extended attribute blocks' reference counts need to
1987 * be adjusted, either up (ctx->refcount_extra), or down
1988 * (ctx->refcount), then fix them.
1989 */
1990 if (ctx->refcount) {
1991 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
1992 ea_refcount_free(ctx->refcount);
1993 ctx->refcount = 0;
1994 }
1995 if (ctx->refcount_extra) {
1996 adjust_extattr_refcount(ctx, ctx->refcount_extra,
1997 block_buf, +1);
1998 ea_refcount_free(ctx->refcount_extra);
1999 ctx->refcount_extra = 0;
2000 }
2001
2002 if (ctx->ea_block_quota_blocks) {
2003 ea_refcount_free(ctx->ea_block_quota_blocks);
2004 ctx->ea_block_quota_blocks = 0;
2005 }
2006
2007 if (ctx->ea_block_quota_inodes) {
2008 ea_refcount_free(ctx->ea_block_quota_inodes);
2009 ctx->ea_block_quota_inodes = 0;
2010 }
2011
2012 if (ctx->invalid_bitmaps)
2013 handle_fs_bad_blocks(ctx);
2014
2015 /* We don't need the block_ea_map any more */
2016 if (ctx->block_ea_map) {
2017 ext2fs_free_block_bitmap(ctx->block_ea_map);
2018 ctx->block_ea_map = 0;
2019 }
2020
2021 if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
2022 clear_problem_context(&pctx);
2023 pctx.errcode = ext2fs_create_resize_inode(fs);
2024 if (pctx.errcode) {
2025 if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE,
2026 &pctx)) {
2027 ctx->flags |= E2F_FLAG_ABORT;
2028 goto endit;
2029 }
2030 pctx.errcode = 0;
2031 }
2032 if (!pctx.errcode) {
2033 e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
2034 "recreate inode");
2035 inode->i_mtime = ctx->now;
2036 e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
2037 "recreate inode");
2038 }
2039 ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
2040 }
2041
2042 if (ctx->flags & E2F_FLAG_RESTART) {
2043 /*
2044 * Only the master copy of the superblock and block
2045 * group descriptors are going to be written during a
2046 * restart, so set the superblock to be used to be the
2047 * master superblock.
2048 */
2049 ctx->use_superblock = 0;
2050 unwind_pass1(fs);
2051 goto endit;
2052 }
2053
2054 if (ctx->block_dup_map) {
2055 if (ctx->options & E2F_OPT_PREEN) {
2056 clear_problem_context(&pctx);
2057 fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
2058 }
2059 e2fsck_pass1_dupblocks(ctx, block_buf);
2060 }
2061 ctx->flags |= E2F_FLAG_ALLOC_OK;
2062 ext2fs_free_mem(&inodes_to_process);
2063 endit:
2064 e2fsck_use_inode_shortcuts(ctx, 0);
2065
2066 if (scan)
2067 ext2fs_close_inode_scan(scan);
2068 if (block_buf)
2069 ext2fs_free_mem(&block_buf);
2070 if (inode)
2071 ext2fs_free_mem(&inode);
2072
2073 /*
2074 * The l+f inode may have been cleared, so zap it now and
2075 * later passes will recalculate it if necessary
2076 */
2077 ctx->lost_and_found = 0;
2078
2079 if ((ctx->flags & E2F_FLAG_SIGNAL_MASK) == 0)
2080 print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io);
2081 else
2082 ctx->invalid_bitmaps++;
2083 }
2084 #undef FINISH_INODE_LOOP
2085
2086 /*
2087 * When the inode_scan routines call this callback at the end of the
2088 * glock group, call process_inodes.
2089 */
2090 static errcode_t scan_callback(ext2_filsys fs,
2091 ext2_inode_scan scan EXT2FS_ATTR((unused)),
2092 dgrp_t group, void * priv_data)
2093 {
2094 struct scan_callback_struct *scan_struct;
2095 e2fsck_t ctx;
2096
2097 scan_struct = (struct scan_callback_struct *) priv_data;
2098 ctx = scan_struct->ctx;
2099
2100 process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf);
2101
2102 if (ctx->progress)
2103 if ((ctx->progress)(ctx, 1, group+1,
2104 ctx->fs->group_desc_count))
2105 return EXT2_ET_CANCEL_REQUESTED;
2106
2107 return 0;
2108 }
2109
2110 /*
2111 * Process the inodes in the "inodes to process" list.
2112 */
2113 static void process_inodes(e2fsck_t ctx, char *block_buf)
2114 {
2115 int i;
2116 struct ext2_inode *old_stashed_inode;
2117 ext2_ino_t old_stashed_ino;
2118 const char *old_operation;
2119 char buf[80];
2120 struct problem_context pctx;
2121
2122 #if 0
2123 printf("begin process_inodes: ");
2124 #endif
2125 if (process_inode_count == 0)
2126 return;
2127 old_operation = ehandler_operation(0);
2128 old_stashed_inode = ctx->stashed_inode;
2129 old_stashed_ino = ctx->stashed_ino;
2130 qsort(inodes_to_process, process_inode_count,
2131 sizeof(struct process_inode_block), process_inode_cmp);
2132 clear_problem_context(&pctx);
2133 for (i=0; i < process_inode_count; i++) {
2134 pctx.inode = ctx->stashed_inode =
2135 (struct ext2_inode *) &inodes_to_process[i].inode;
2136 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
2137
2138 #if 0
2139 printf("%u ", pctx.ino);
2140 #endif
2141 sprintf(buf, _("reading indirect blocks of inode %u"),
2142 pctx.ino);
2143 ehandler_operation(buf);
2144 check_blocks(ctx, &pctx, block_buf,
2145 &inodes_to_process[i].ea_ibody_quota);
2146 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2147 break;
2148 }
2149 ctx->stashed_inode = old_stashed_inode;
2150 ctx->stashed_ino = old_stashed_ino;
2151 process_inode_count = 0;
2152 #if 0
2153 printf("end process inodes\n");
2154 #endif
2155 ehandler_operation(old_operation);
2156 }
2157
2158 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
2159 {
2160 const struct process_inode_block *ib_a =
2161 (const struct process_inode_block *) a;
2162 const struct process_inode_block *ib_b =
2163 (const struct process_inode_block *) b;
2164 int ret;
2165
2166 ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
2167 ib_b->inode.i_block[EXT2_IND_BLOCK]);
2168 if (ret == 0)
2169 /*
2170 * We only call process_inodes() for non-extent
2171 * inodes, so it's OK to pass NULL to
2172 * ext2fs_file_acl_block() here.
2173 */
2174 ret = ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_a->inode)) -
2175 ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_b->inode));
2176 if (ret == 0)
2177 ret = ib_a->ino - ib_b->ino;
2178 return ret;
2179 }
2180
2181 /*
2182 * Mark an inode as being bad in some what
2183 */
2184 static void mark_inode_bad(e2fsck_t ctx, ino_t ino)
2185 {
2186 struct problem_context pctx;
2187
2188 if (!ctx->inode_bad_map) {
2189 clear_problem_context(&pctx);
2190
2191 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2192 _("bad inode map"), EXT2FS_BMAP64_RBTREE,
2193 "inode_bad_map", &ctx->inode_bad_map);
2194 if (pctx.errcode) {
2195 pctx.num = 3;
2196 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2197 /* Should never get here */
2198 ctx->flags |= E2F_FLAG_ABORT;
2199 return;
2200 }
2201 }
2202 ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino);
2203 }
2204
2205 static void add_encrypted_dir(e2fsck_t ctx, ino_t ino)
2206 {
2207 struct problem_context pctx;
2208
2209 if (!ctx->encrypted_dirs) {
2210 pctx.errcode = ext2fs_u32_list_create(&ctx->encrypted_dirs, 0);
2211 if (pctx.errcode)
2212 goto error;
2213 }
2214 pctx.errcode = ext2fs_u32_list_add(ctx->encrypted_dirs, ino);
2215 if (pctx.errcode == 0)
2216 return;
2217 error:
2218 fix_problem(ctx, PR_1_ALLOCATE_ENCRYPTED_DIRLIST, &pctx);
2219 /* Should never get here */
2220 ctx->flags |= E2F_FLAG_ABORT;
2221 }
2222
2223 /*
2224 * This procedure will allocate the inode "bb" (badblock) map table
2225 */
2226 static void alloc_bb_map(e2fsck_t ctx)
2227 {
2228 struct problem_context pctx;
2229
2230 clear_problem_context(&pctx);
2231 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2232 _("inode in bad block map"), EXT2FS_BMAP64_RBTREE,
2233 "inode_bb_map", &ctx->inode_bb_map);
2234 if (pctx.errcode) {
2235 pctx.num = 4;
2236 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2237 /* Should never get here */
2238 ctx->flags |= E2F_FLAG_ABORT;
2239 return;
2240 }
2241 }
2242
2243 /*
2244 * This procedure will allocate the inode imagic table
2245 */
2246 static void alloc_imagic_map(e2fsck_t ctx)
2247 {
2248 struct problem_context pctx;
2249
2250 clear_problem_context(&pctx);
2251 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2252 _("imagic inode map"), EXT2FS_BMAP64_RBTREE,
2253 "inode_imagic_map", &ctx->inode_imagic_map);
2254 if (pctx.errcode) {
2255 pctx.num = 5;
2256 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2257 /* Should never get here */
2258 ctx->flags |= E2F_FLAG_ABORT;
2259 return;
2260 }
2261 }
2262
2263 /*
2264 * Marks a block as in use, setting the dup_map if it's been set
2265 * already. Called by process_block and process_bad_block.
2266 *
2267 * WARNING: Assumes checks have already been done to make sure block
2268 * is valid. This is true in both process_block and process_bad_block.
2269 */
2270 static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block)
2271 {
2272 struct problem_context pctx;
2273
2274 clear_problem_context(&pctx);
2275
2276 if (ext2fs_fast_test_block_bitmap2(ctx->block_found_map, block)) {
2277 if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
2278 !(ctx->options & E2F_OPT_UNSHARE_BLOCKS)) {
2279 return;
2280 }
2281 if (!ctx->block_dup_map) {
2282 pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
2283 _("multiply claimed block map"),
2284 EXT2FS_BMAP64_RBTREE, "block_dup_map",
2285 &ctx->block_dup_map);
2286 if (pctx.errcode) {
2287 pctx.num = 3;
2288 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
2289 &pctx);
2290 /* Should never get here */
2291 ctx->flags |= E2F_FLAG_ABORT;
2292 return;
2293 }
2294 }
2295 ext2fs_fast_mark_block_bitmap2(ctx->block_dup_map, block);
2296 } else {
2297 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block);
2298 }
2299 }
2300
2301 /*
2302 * When cluster size is greater than one block, it is caller's responsibility
2303 * to make sure block parameter starts at a cluster boundary.
2304 */
2305 static _INLINE_ void mark_blocks_used(e2fsck_t ctx, blk64_t block,
2306 unsigned int num)
2307 {
2308 if (ext2fs_test_block_bitmap_range2(ctx->block_found_map, block, num))
2309 ext2fs_mark_block_bitmap_range2(ctx->block_found_map, block, num);
2310 else {
2311 unsigned int i;
2312
2313 for (i = 0; i < num; i += EXT2FS_CLUSTER_RATIO(ctx->fs))
2314 mark_block_used(ctx, block + i);
2315 }
2316 }
2317
2318 /*
2319 * Adjust the extended attribute block's reference counts at the end
2320 * of pass 1, either by subtracting out references for EA blocks that
2321 * are still referenced in ctx->refcount, or by adding references for
2322 * EA blocks that had extra references as accounted for in
2323 * ctx->refcount_extra.
2324 */
2325 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
2326 char *block_buf, int adjust_sign)
2327 {
2328 struct ext2_ext_attr_header *header;
2329 struct problem_context pctx;
2330 ext2_filsys fs = ctx->fs;
2331 blk64_t blk;
2332 __u32 should_be;
2333 ea_value_t count;
2334
2335 clear_problem_context(&pctx);
2336
2337 ea_refcount_intr_begin(refcount);
2338 while (1) {
2339 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
2340 break;
2341 pctx.blk = blk;
2342 pctx.errcode = ext2fs_read_ext_attr3(fs, blk, block_buf,
2343 pctx.ino);
2344 if (pctx.errcode) {
2345 fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
2346 return;
2347 }
2348 header = (struct ext2_ext_attr_header *) block_buf;
2349 pctx.blkcount = header->h_refcount;
2350 should_be = header->h_refcount + adjust_sign * (int)count;
2351 pctx.num = should_be;
2352 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
2353 header->h_refcount = should_be;
2354 pctx.errcode = ext2fs_write_ext_attr3(fs, blk,
2355 block_buf,
2356 pctx.ino);
2357 if (pctx.errcode) {
2358 fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT,
2359 &pctx);
2360 continue;
2361 }
2362 }
2363 }
2364 }
2365
2366 /*
2367 * Handle processing the extended attribute blocks
2368 */
2369 static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
2370 char *block_buf, struct ea_quota *ea_block_quota)
2371 {
2372 ext2_filsys fs = ctx->fs;
2373 ext2_ino_t ino = pctx->ino;
2374 struct ext2_inode *inode = pctx->inode;
2375 blk64_t blk;
2376 char * end;
2377 struct ext2_ext_attr_header *header;
2378 struct ext2_ext_attr_entry *first, *entry;
2379 blk64_t quota_blocks = EXT2FS_C2B(fs, 1);
2380 __u64 quota_inodes = 0;
2381 region_t region = 0;
2382 int failed_csum = 0;
2383
2384 ea_block_quota->blocks = 0;
2385 ea_block_quota->inodes = 0;
2386
2387 blk = ext2fs_file_acl_block(fs, inode);
2388 if (blk == 0)
2389 return 0;
2390
2391 /*
2392 * If the Extended attribute flag isn't set, then a non-zero
2393 * file acl means that the inode is corrupted.
2394 *
2395 * Or if the extended attribute block is an invalid block,
2396 * then the inode is also corrupted.
2397 */
2398 if (!ext2fs_has_feature_xattr(fs->super) ||
2399 (blk < fs->super->s_first_data_block) ||
2400 (blk >= ext2fs_blocks_count(fs->super))) {
2401 mark_inode_bad(ctx, ino);
2402 return 0;
2403 }
2404
2405 /* If ea bitmap hasn't been allocated, create it */
2406 if (!ctx->block_ea_map) {
2407 pctx->errcode = e2fsck_allocate_block_bitmap(fs,
2408 _("ext attr block map"),
2409 EXT2FS_BMAP64_RBTREE, "block_ea_map",
2410 &ctx->block_ea_map);
2411 if (pctx->errcode) {
2412 pctx->num = 2;
2413 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
2414 ctx->flags |= E2F_FLAG_ABORT;
2415 return 0;
2416 }
2417 }
2418
2419 /* Create the EA refcount structure if necessary */
2420 if (!ctx->refcount) {
2421 pctx->errcode = ea_refcount_create(0, &ctx->refcount);
2422 if (pctx->errcode) {
2423 pctx->num = 1;
2424 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2425 ctx->flags |= E2F_FLAG_ABORT;
2426 return 0;
2427 }
2428 }
2429
2430 #if 0
2431 /* Debugging text */
2432 printf("Inode %u has EA block %u\n", ino, blk);
2433 #endif
2434
2435 /* Have we seen this EA block before? */
2436 if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) {
2437 ea_block_quota->blocks = EXT2FS_C2B(fs, 1);
2438 ea_block_quota->inodes = 0;
2439
2440 if (ctx->ea_block_quota_blocks) {
2441 ea_refcount_fetch(ctx->ea_block_quota_blocks, blk,
2442 &quota_blocks);
2443 if (quota_blocks)
2444 ea_block_quota->blocks = quota_blocks;
2445 }
2446
2447 if (ctx->ea_block_quota_inodes)
2448 ea_refcount_fetch(ctx->ea_block_quota_inodes, blk,
2449 &ea_block_quota->inodes);
2450
2451 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
2452 return 1;
2453 /* Ooops, this EA was referenced more than it stated */
2454 if (!ctx->refcount_extra) {
2455 pctx->errcode = ea_refcount_create(0,
2456 &ctx->refcount_extra);
2457 if (pctx->errcode) {
2458 pctx->num = 2;
2459 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2460 ctx->flags |= E2F_FLAG_ABORT;
2461 return 0;
2462 }
2463 }
2464 ea_refcount_increment(ctx->refcount_extra, blk, 0);
2465 return 1;
2466 }
2467
2468 /*
2469 * OK, we haven't seen this EA block yet. So we need to
2470 * validate it
2471 */
2472 pctx->blk = blk;
2473 pctx->errcode = ext2fs_read_ext_attr3(fs, blk, block_buf, pctx->ino);
2474 if (pctx->errcode == EXT2_ET_EXT_ATTR_CSUM_INVALID) {
2475 pctx->errcode = 0;
2476 failed_csum = 1;
2477 } else if (pctx->errcode == EXT2_ET_BAD_EA_HEADER)
2478 pctx->errcode = 0;
2479
2480 if (pctx->errcode &&
2481 fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx)) {
2482 pctx->errcode = 0;
2483 goto clear_extattr;
2484 }
2485 header = (struct ext2_ext_attr_header *) block_buf;
2486 pctx->blk = ext2fs_file_acl_block(fs, inode);
2487 if (((ctx->ext_attr_ver == 1) &&
2488 (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
2489 ((ctx->ext_attr_ver == 2) &&
2490 (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
2491 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
2492 goto clear_extattr;
2493 }
2494
2495 if (header->h_blocks != 1) {
2496 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
2497 goto clear_extattr;
2498 }
2499
2500 if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
2501 goto clear_extattr;
2502
2503 region = region_create(0, fs->blocksize);
2504 if (!region) {
2505 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
2506 ctx->flags |= E2F_FLAG_ABORT;
2507 return 0;
2508 }
2509 if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
2510 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2511 goto clear_extattr;
2512 }
2513
2514 first = (struct ext2_ext_attr_entry *)(header+1);
2515 end = block_buf + fs->blocksize;
2516 entry = first;
2517 while ((char *)entry < end && *(__u32 *)entry) {
2518 __u32 hash;
2519
2520 if (region_allocate(region, (char *)entry - (char *)header,
2521 EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
2522 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2523 goto clear_extattr;
2524 break;
2525 }
2526 if ((ctx->ext_attr_ver == 1 &&
2527 (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
2528 (ctx->ext_attr_ver == 2 &&
2529 entry->e_name_index == 0)) {
2530 if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
2531 goto clear_extattr;
2532 break;
2533 }
2534 if (entry->e_value_inum == 0) {
2535 if (entry->e_value_offs + entry->e_value_size >
2536 fs->blocksize) {
2537 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
2538 goto clear_extattr;
2539 break;
2540 }
2541 if (entry->e_value_size &&
2542 region_allocate(region, entry->e_value_offs,
2543 EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
2544 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION,
2545 pctx))
2546 goto clear_extattr;
2547 }
2548
2549 hash = ext2fs_ext_attr_hash_entry(entry, block_buf +
2550 entry->e_value_offs);
2551
2552 if (entry->e_hash != hash) {
2553 pctx->num = entry->e_hash;
2554 if (fix_problem(ctx, PR_1_ATTR_HASH, pctx))
2555 goto clear_extattr;
2556 entry->e_hash = hash;
2557 }
2558 } else {
2559 problem_t problem;
2560 blk64_t entry_quota_blocks;
2561
2562 problem = check_large_ea_inode(ctx, entry, pctx,
2563 &entry_quota_blocks);
2564 if (problem && fix_problem(ctx, problem, pctx))
2565 goto clear_extattr;
2566
2567 quota_blocks += entry_quota_blocks;
2568 quota_inodes++;
2569 }
2570
2571 entry = EXT2_EXT_ATTR_NEXT(entry);
2572 }
2573 if (region_allocate(region, (char *)entry - (char *)header, 4)) {
2574 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2575 goto clear_extattr;
2576 }
2577 region_free(region);
2578
2579 /*
2580 * We only get here if there was no other errors that were fixed.
2581 * If there was a checksum fail, ask to correct it.
2582 */
2583 if (failed_csum &&
2584 fix_problem(ctx, PR_1_EA_BLOCK_ONLY_CSUM_INVALID, pctx)) {
2585 pctx->errcode = ext2fs_write_ext_attr3(fs, blk, block_buf,
2586 pctx->ino);
2587 if (pctx->errcode)
2588 return 0;
2589 }
2590
2591 if (quota_blocks != EXT2FS_C2B(fs, 1U)) {
2592 if (!ctx->ea_block_quota_blocks) {
2593 pctx->errcode = ea_refcount_create(0,
2594 &ctx->ea_block_quota_blocks);
2595 if (pctx->errcode) {
2596 pctx->num = 3;
2597 goto refcount_fail;
2598 }
2599 }
2600 ea_refcount_store(ctx->ea_block_quota_blocks, blk,
2601 quota_blocks);
2602 }
2603
2604 if (quota_inodes) {
2605 if (!ctx->ea_block_quota_inodes) {
2606 pctx->errcode = ea_refcount_create(0,
2607 &ctx->ea_block_quota_inodes);
2608 if (pctx->errcode) {
2609 pctx->num = 4;
2610 refcount_fail:
2611 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2612 ctx->flags |= E2F_FLAG_ABORT;
2613 return 0;
2614 }
2615 }
2616
2617 ea_refcount_store(ctx->ea_block_quota_inodes, blk,
2618 quota_inodes);
2619 }
2620 ea_block_quota->blocks = quota_blocks;
2621 ea_block_quota->inodes = quota_inodes;
2622
2623 inc_ea_inode_refs(ctx, pctx, first, end);
2624 ea_refcount_store(ctx->refcount, blk, header->h_refcount - 1);
2625 mark_block_used(ctx, blk);
2626 ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk);
2627 return 1;
2628
2629 clear_extattr:
2630 if (region)
2631 region_free(region);
2632 ext2fs_file_acl_block_set(fs, inode, 0);
2633 e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
2634 return 0;
2635 }
2636
2637 /* Returns 1 if bad htree, 0 if OK */
2638 static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
2639 ext2_ino_t ino, struct ext2_inode *inode,
2640 char *block_buf)
2641 {
2642 struct ext2_dx_root_info *root;
2643 ext2_filsys fs = ctx->fs;
2644 errcode_t retval;
2645 blk64_t blk;
2646
2647 if ((!LINUX_S_ISDIR(inode->i_mode) &&
2648 fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
2649 (!ext2fs_has_feature_dir_index(fs->super) &&
2650 fix_problem(ctx, PR_1_HTREE_SET, pctx)))
2651 return 1;
2652
2653 pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk);
2654
2655 if ((pctx->errcode) ||
2656 (blk == 0) ||
2657 (blk < fs->super->s_first_data_block) ||
2658 (blk >= ext2fs_blocks_count(fs->super))) {
2659 if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2660 return 1;
2661 else
2662 return 0;
2663 }
2664
2665 retval = io_channel_read_blk64(fs->io, blk, 1, block_buf);
2666 if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2667 return 1;
2668
2669 /* XXX should check that beginning matches a directory */
2670 root = (struct ext2_dx_root_info *) (block_buf + 24);
2671
2672 if ((root->reserved_zero || root->info_length < 8) &&
2673 fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2674 return 1;
2675
2676 pctx->num = root->hash_version;
2677 if ((root->hash_version != EXT2_HASH_LEGACY) &&
2678 (root->hash_version != EXT2_HASH_HALF_MD4) &&
2679 (root->hash_version != EXT2_HASH_TEA) &&
2680 fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
2681 return 1;
2682
2683 if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
2684 fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
2685 return 1;
2686
2687 pctx->num = root->indirect_levels;
2688 if ((root->indirect_levels > ext2_dir_htree_level(fs)) &&
2689 fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
2690 return 1;
2691
2692 return 0;
2693 }
2694
2695 void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
2696 struct ext2_inode *inode, int restart_flag,
2697 const char *source)
2698 {
2699 inode->i_flags = 0;
2700 inode->i_links_count = 0;
2701 ext2fs_icount_store(ctx->inode_link_info, ino, 0);
2702 inode->i_dtime = ctx->now;
2703
2704 /*
2705 * If a special inode has such rotten block mappings that we
2706 * want to clear the whole inode, be sure to actually zap
2707 * the block maps because i_links_count isn't checked for
2708 * special inodes, and we'll end up right back here the next
2709 * time we run fsck.
2710 */
2711 if (ino < EXT2_FIRST_INODE(ctx->fs->super))
2712 memset(inode->i_block, 0, sizeof(inode->i_block));
2713
2714 ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
2715 ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
2716 if (ctx->inode_reg_map)
2717 ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
2718 if (ctx->inode_bad_map)
2719 ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
2720
2721 /*
2722 * If the inode was partially accounted for before processing
2723 * was aborted, we need to restart the pass 1 scan.
2724 */
2725 ctx->flags |= restart_flag;
2726
2727 if (ino == EXT2_BAD_INO)
2728 memset(inode, 0, sizeof(struct ext2_inode));
2729
2730 e2fsck_write_inode(ctx, ino, inode, source);
2731 }
2732
2733 /*
2734 * Use the multiple-blocks reclamation code to fix alignment problems in
2735 * a bigalloc filesystem. We want a logical cluster to map to *only* one
2736 * physical cluster, and we want the block offsets within that cluster to
2737 * line up.
2738 */
2739 static int has_unaligned_cluster_map(e2fsck_t ctx,
2740 blk64_t last_pblk, blk64_t last_lblk,
2741 blk64_t pblk, blk64_t lblk)
2742 {
2743 blk64_t cluster_mask;
2744
2745 if (!ctx->fs->cluster_ratio_bits)
2746 return 0;
2747 cluster_mask = EXT2FS_CLUSTER_MASK(ctx->fs);
2748
2749 /*
2750 * If the block in the logical cluster doesn't align with the block in
2751 * the physical cluster...
2752 */
2753 if ((lblk & cluster_mask) != (pblk & cluster_mask))
2754 return 1;
2755
2756 /*
2757 * If we cross a physical cluster boundary within a logical cluster...
2758 */
2759 if (last_pblk && (lblk & cluster_mask) != 0 &&
2760 EXT2FS_B2C(ctx->fs, lblk) == EXT2FS_B2C(ctx->fs, last_lblk) &&
2761 EXT2FS_B2C(ctx->fs, pblk) != EXT2FS_B2C(ctx->fs, last_pblk))
2762 return 1;
2763
2764 return 0;
2765 }
2766
2767 static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
2768 struct process_block_struct *pb,
2769 blk64_t start_block, blk64_t end_block,
2770 blk64_t eof_block,
2771 ext2_extent_handle_t ehandle,
2772 int try_repairs)
2773 {
2774 struct ext2fs_extent extent;
2775 blk64_t blk, last_lblk;
2776 unsigned int i, n;
2777 int is_dir, is_leaf;
2778 problem_t problem;
2779 struct ext2_extent_info info;
2780 int failed_csum = 0;
2781
2782 if (pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID)
2783 failed_csum = 1;
2784
2785 pctx->errcode = ext2fs_extent_get_info(ehandle, &info);
2786 if (pctx->errcode)
2787 return;
2788 if (!(ctx->options & E2F_OPT_FIXES_ONLY) &&
2789 !pb->eti.force_rebuild) {
2790 struct extent_tree_level *etl;
2791
2792 etl = pb->eti.ext_info + info.curr_level;
2793 etl->num_extents += info.num_entries;
2794 etl->max_extents += info.max_entries;
2795 /*
2796 * Implementation wart: Splitting extent blocks when appending
2797 * will leave the old block with one free entry. Therefore
2798 * unless the node is totally full, pretend that a non-root
2799 * extent block can hold one fewer entry than it actually does,
2800 * so that we don't repeatedly rebuild the extent tree.
2801 */
2802 if (info.curr_level && info.num_entries < info.max_entries)
2803 etl->max_extents--;
2804 }
2805
2806 pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB,
2807 &extent);
2808 while ((pctx->errcode == 0 ||
2809 pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID) &&
2810 info.num_entries-- > 0) {
2811 is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF;
2812 is_dir = LINUX_S_ISDIR(pctx->inode->i_mode);
2813 last_lblk = extent.e_lblk + extent.e_len - 1;
2814
2815 problem = 0;
2816 pctx->blk = extent.e_pblk;
2817 pctx->blk2 = extent.e_lblk;
2818 pctx->num = extent.e_len;
2819 pctx->blkcount = extent.e_lblk + extent.e_len;
2820
2821 if (extent.e_pblk == 0 ||
2822 extent.e_pblk < ctx->fs->super->s_first_data_block ||
2823 extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super))
2824 problem = PR_1_EXTENT_BAD_START_BLK;
2825 else if (extent.e_lblk < start_block)
2826 problem = PR_1_OUT_OF_ORDER_EXTENTS;
2827 else if ((end_block && last_lblk > end_block) &&
2828 !(last_lblk > eof_block &&
2829 ((extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) ||
2830 (pctx->inode->i_flags & EXT4_VERITY_FL))))
2831 problem = PR_1_EXTENT_END_OUT_OF_BOUNDS;
2832 else if (is_leaf && extent.e_len == 0)
2833 problem = PR_1_EXTENT_LENGTH_ZERO;
2834 else if (is_leaf &&
2835 (extent.e_pblk + extent.e_len) >
2836 ext2fs_blocks_count(ctx->fs->super))
2837 problem = PR_1_EXTENT_ENDS_BEYOND;
2838 else if (is_leaf && is_dir &&
2839 ((extent.e_lblk + extent.e_len) >
2840 (1U << (21 - ctx->fs->super->s_log_block_size))))
2841 problem = PR_1_TOOBIG_DIR;
2842
2843 if (is_leaf && problem == 0 && extent.e_len > 0) {
2844 #if 0
2845 printf("extent_region(ino=%u, expect=%llu, "
2846 "lblk=%llu, len=%u)\n",
2847 pb->ino, pb->next_lblock,
2848 extent.e_lblk, extent.e_len);
2849 #endif
2850 if (extent.e_lblk < pb->next_lblock)
2851 problem = PR_1_EXTENT_COLLISION;
2852 else if (extent.e_lblk + extent.e_len > pb->next_lblock)
2853 pb->next_lblock = extent.e_lblk + extent.e_len;
2854 }
2855
2856 /*
2857 * Uninitialized blocks in a directory? Clear the flag and
2858 * we'll interpret the blocks later.
2859 */
2860 if (try_repairs && is_dir && problem == 0 &&
2861 (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
2862 fix_problem(ctx, PR_1_UNINIT_DBLOCK, pctx)) {
2863 extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
2864 pb->inode_modified = 1;
2865 pctx->errcode = ext2fs_extent_replace(ehandle, 0,
2866 &extent);
2867 if (pctx->errcode)
2868 return;
2869 failed_csum = 0;
2870 }
2871
2872 if (try_repairs && problem) {
2873 report_problem:
2874 if (fix_problem(ctx, problem, pctx)) {
2875 if (ctx->invalid_bitmaps) {
2876 /*
2877 * If fsck knows the bitmaps are bad,
2878 * skip to the next extent and
2879 * try to clear this extent again
2880 * after fixing the bitmaps, by
2881 * restarting fsck.
2882 */
2883 pctx->errcode = ext2fs_extent_get(
2884 ehandle,
2885 EXT2_EXTENT_NEXT_SIB,
2886 &extent);
2887 ctx->flags |= E2F_FLAG_RESTART_LATER;
2888 if (pctx->errcode ==
2889 EXT2_ET_NO_CURRENT_NODE) {
2890 pctx->errcode = 0;
2891 break;
2892 }
2893 continue;
2894 }
2895 e2fsck_read_bitmaps(ctx);
2896 pb->inode_modified = 1;
2897 pctx->errcode =
2898 ext2fs_extent_delete(ehandle, 0);
2899 if (pctx->errcode) {
2900 pctx->str = "ext2fs_extent_delete";
2901 return;
2902 }
2903 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
2904 if (pctx->errcode &&
2905 pctx->errcode != EXT2_ET_NO_CURRENT_NODE) {
2906 pctx->str = "ext2fs_extent_fix_parents";
2907 return;
2908 }
2909 pctx->errcode = ext2fs_extent_get(ehandle,
2910 EXT2_EXTENT_CURRENT,
2911 &extent);
2912 if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) {
2913 pctx->errcode = 0;
2914 break;
2915 }
2916 failed_csum = 0;
2917 continue;
2918 }
2919 goto next;
2920 }
2921
2922 if (!is_leaf) {
2923 blk64_t lblk = extent.e_lblk;
2924 int next_try_repairs = 1;
2925
2926 blk = extent.e_pblk;
2927
2928 /*
2929 * If this lower extent block collides with critical
2930 * metadata, don't try to repair the damage. Pass 1b
2931 * will reallocate the block; then we can try again.
2932 */
2933 if (pb->ino != EXT2_RESIZE_INO &&
2934 extent.e_pblk < ctx->fs->super->s_blocks_count &&
2935 ext2fs_test_block_bitmap2(ctx->block_metadata_map,
2936 extent.e_pblk)) {
2937 next_try_repairs = 0;
2938 pctx->blk = blk;
2939 fix_problem(ctx,
2940 PR_1_CRITICAL_METADATA_COLLISION,
2941 pctx);
2942 if ((ctx->options & E2F_OPT_NO) == 0)
2943 ctx->flags |= E2F_FLAG_RESTART_LATER;
2944 }
2945 pctx->errcode = ext2fs_extent_get(ehandle,
2946 EXT2_EXTENT_DOWN, &extent);
2947 if (pctx->errcode &&
2948 pctx->errcode != EXT2_ET_EXTENT_CSUM_INVALID) {
2949 pctx->str = "EXT2_EXTENT_DOWN";
2950 problem = PR_1_EXTENT_HEADER_INVALID;
2951 if (!next_try_repairs)
2952 return;
2953 if (pctx->errcode == EXT2_ET_EXTENT_HEADER_BAD)
2954 goto report_problem;
2955 return;
2956 }
2957 /* The next extent should match this index's logical start */
2958 if (extent.e_lblk != lblk) {
2959 struct ext2_extent_info e_info;
2960
2961 ext2fs_extent_get_info(ehandle, &e_info);
2962 pctx->blk = lblk;
2963 pctx->blk2 = extent.e_lblk;
2964 pctx->num = e_info.curr_level - 1;
2965 problem = PR_1_EXTENT_INDEX_START_INVALID;
2966 if (fix_problem(ctx, problem, pctx)) {
2967 pb->inode_modified = 1;
2968 pctx->errcode =
2969 ext2fs_extent_fix_parents(ehandle);
2970 if (pctx->errcode) {
2971 pctx->str = "ext2fs_extent_fix_parents";
2972 return;
2973 }
2974 }
2975 }
2976 scan_extent_node(ctx, pctx, pb, extent.e_lblk,
2977 last_lblk, eof_block, ehandle,
2978 next_try_repairs);
2979 if (pctx->errcode)
2980 return;
2981 pctx->errcode = ext2fs_extent_get(ehandle,
2982 EXT2_EXTENT_UP, &extent);
2983 if (pctx->errcode) {
2984 pctx->str = "EXT2_EXTENT_UP";
2985 return;
2986 }
2987 mark_block_used(ctx, blk);
2988 pb->num_blocks++;
2989 goto next;
2990 }
2991
2992 if ((pb->previous_block != 0) &&
2993 (pb->previous_block+1 != extent.e_pblk)) {
2994 if (ctx->options & E2F_OPT_FRAGCHECK) {
2995 char type = '?';
2996
2997 if (pb->is_dir)
2998 type = 'd';
2999 else if (pb->is_reg)
3000 type = 'f';
3001
3002 printf(("%6lu(%c): expecting %6lu "
3003 "actual extent "
3004 "phys %6lu log %lu len %lu\n"),
3005 (unsigned long) pctx->ino, type,
3006 (unsigned long) pb->previous_block+1,
3007 (unsigned long) extent.e_pblk,
3008 (unsigned long) extent.e_lblk,
3009 (unsigned long) extent.e_len);
3010 }
3011 pb->fragmented = 1;
3012 }
3013 /*
3014 * If we notice a gap in the logical block mappings of an
3015 * extent-mapped directory, offer to close the hole by
3016 * moving the logical block down, otherwise we'll go mad in
3017 * pass 3 allocating empty directory blocks to fill the hole.
3018 */
3019 if (try_repairs && is_dir &&
3020 pb->last_block + 1 < extent.e_lblk) {
3021 blk64_t new_lblk;
3022
3023 new_lblk = pb->last_block + 1;
3024 if (EXT2FS_CLUSTER_RATIO(ctx->fs) > 1)
3025 new_lblk = ((new_lblk +
3026 EXT2FS_CLUSTER_RATIO(ctx->fs) - 1) &
3027 ~EXT2FS_CLUSTER_MASK(ctx->fs)) |
3028 (extent.e_pblk &
3029 EXT2FS_CLUSTER_MASK(ctx->fs));
3030 pctx->blk = extent.e_lblk;
3031 pctx->blk2 = new_lblk;
3032 if (fix_problem(ctx, PR_1_COLLAPSE_DBLOCK, pctx)) {
3033 extent.e_lblk = new_lblk;
3034 pb->inode_modified = 1;
3035 pctx->errcode = ext2fs_extent_replace(ehandle,
3036 0, &extent);
3037 if (pctx->errcode) {
3038 pctx->errcode = 0;
3039 goto alloc_later;
3040 }
3041 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
3042 if (pctx->errcode)
3043 goto failed_add_dir_block;
3044 pctx->errcode = ext2fs_extent_goto(ehandle,
3045 extent.e_lblk);
3046 if (pctx->errcode)
3047 goto failed_add_dir_block;
3048 last_lblk = extent.e_lblk + extent.e_len - 1;
3049 failed_csum = 0;
3050 }
3051 }
3052 alloc_later:
3053 if (is_dir) {
3054 while (++pb->last_db_block <
3055 (e2_blkcnt_t) extent.e_lblk) {
3056 pctx->errcode = ext2fs_add_dir_block2(
3057 ctx->fs->dblist,
3058 pb->ino, 0,
3059 pb->last_db_block);
3060 if (pctx->errcode) {
3061 pctx->blk = 0;
3062 pctx->num = pb->last_db_block;
3063 goto failed_add_dir_block;
3064 }
3065 }
3066
3067 for (i = 0; i < extent.e_len; i++) {
3068 pctx->errcode = ext2fs_add_dir_block2(
3069 ctx->fs->dblist,
3070 pctx->ino,
3071 extent.e_pblk + i,
3072 extent.e_lblk + i);
3073 if (pctx->errcode) {
3074 pctx->blk = extent.e_pblk + i;
3075 pctx->num = extent.e_lblk + i;
3076 failed_add_dir_block:
3077 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3078 /* Should never get here */
3079 ctx->flags |= E2F_FLAG_ABORT;
3080 return;
3081 }
3082 }
3083 if (extent.e_len > 0)
3084 pb->last_db_block = extent.e_lblk + extent.e_len - 1;
3085 }
3086 if (has_unaligned_cluster_map(ctx, pb->previous_block,
3087 pb->last_block,
3088 extent.e_pblk,
3089 extent.e_lblk)) {
3090 for (i = 0; i < extent.e_len; i++) {
3091 pctx->blk = extent.e_lblk + i;
3092 pctx->blk2 = extent.e_pblk + i;
3093 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
3094 mark_block_used(ctx, extent.e_pblk + i);
3095 mark_block_used(ctx, extent.e_pblk + i);
3096 }
3097 }
3098
3099 /*
3100 * Check whether first cluster got marked in previous iteration.
3101 */
3102 if (ctx->fs->cluster_ratio_bits &&
3103 pb->previous_block &&
3104 (EXT2FS_B2C(ctx->fs, extent.e_pblk) ==
3105 EXT2FS_B2C(ctx->fs, pb->previous_block)))
3106 /* Set blk to the beginning of next cluster. */
3107 blk = EXT2FS_C2B(
3108 ctx->fs,
3109 EXT2FS_B2C(ctx->fs, extent.e_pblk) + 1);
3110 else
3111 /* Set blk to the beginning of current cluster. */
3112 blk = EXT2FS_C2B(ctx->fs,
3113 EXT2FS_B2C(ctx->fs, extent.e_pblk));
3114
3115 if (blk < extent.e_pblk + extent.e_len) {
3116 mark_blocks_used(ctx, blk,
3117 extent.e_pblk + extent.e_len - blk);
3118 n = DIV_ROUND_UP(extent.e_pblk + extent.e_len - blk,
3119 EXT2FS_CLUSTER_RATIO(ctx->fs));
3120 pb->num_blocks += n;
3121 }
3122 pb->last_block = extent.e_lblk + extent.e_len - 1;
3123 pb->previous_block = extent.e_pblk + extent.e_len - 1;
3124 start_block = pb->last_block = last_lblk;
3125 if (is_leaf && !is_dir &&
3126 !(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT))
3127 pb->last_init_lblock = last_lblk;
3128 next:
3129 pctx->errcode = ext2fs_extent_get(ehandle,
3130 EXT2_EXTENT_NEXT_SIB,
3131 &extent);
3132 }
3133
3134 /* Failed csum but passes checks? Ask to fix checksum. */
3135 if (failed_csum &&
3136 fix_problem(ctx, PR_1_EXTENT_ONLY_CSUM_INVALID, pctx)) {
3137 pb->inode_modified = 1;
3138 pctx->errcode = ext2fs_extent_replace(ehandle, 0, &extent);
3139 if (pctx->errcode)
3140 return;
3141 }
3142
3143 if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT)
3144 pctx->errcode = 0;
3145 }
3146
3147 static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
3148 struct process_block_struct *pb)
3149 {
3150 struct ext2_extent_info info;
3151 struct ext2_inode *inode = pctx->inode;
3152 ext2_extent_handle_t ehandle;
3153 ext2_filsys fs = ctx->fs;
3154 ext2_ino_t ino = pctx->ino;
3155 errcode_t retval;
3156 blk64_t eof_lblk;
3157 struct ext3_extent_header *eh;
3158
3159 /* Check for a proper extent header... */
3160 eh = (struct ext3_extent_header *) &inode->i_block[0];
3161 retval = ext2fs_extent_header_verify(eh, sizeof(inode->i_block));
3162 if (retval) {
3163 if (fix_problem(ctx, PR_1_MISSING_EXTENT_HEADER, pctx))
3164 e2fsck_clear_inode(ctx, ino, inode, 0,
3165 "check_blocks_extents");
3166 pctx->errcode = 0;
3167 return;
3168 }
3169
3170 /* ...since this function doesn't fail if i_block is zeroed. */
3171 pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle);
3172 if (pctx->errcode) {
3173 if (fix_problem(ctx, PR_1_READ_EXTENT, pctx))
3174 e2fsck_clear_inode(ctx, ino, inode, 0,
3175 "check_blocks_extents");
3176 pctx->errcode = 0;
3177 return;
3178 }
3179
3180 retval = ext2fs_extent_get_info(ehandle, &info);
3181 if (retval == 0) {
3182 int max_depth = info.max_depth;
3183
3184 if (max_depth >= MAX_EXTENT_DEPTH_COUNT)
3185 max_depth = MAX_EXTENT_DEPTH_COUNT-1;
3186 ctx->extent_depth_count[max_depth]++;
3187 }
3188
3189 /* Check maximum extent depth */
3190 pctx->blk = info.max_depth;
3191 pctx->blk2 = ext2fs_max_extent_depth(ehandle);
3192 if (pctx->blk2 < pctx->blk &&
3193 fix_problem(ctx, PR_1_EXTENT_BAD_MAX_DEPTH, pctx))
3194 pb->eti.force_rebuild = 1;
3195
3196 /* Can we collect extent tree level stats? */
3197 pctx->blk = MAX_EXTENT_DEPTH_COUNT;
3198 if (pctx->blk2 > pctx->blk)
3199 fix_problem(ctx, PR_1E_MAX_EXTENT_TREE_DEPTH, pctx);
3200 memset(pb->eti.ext_info, 0, sizeof(pb->eti.ext_info));
3201 pb->eti.ino = pb->ino;
3202
3203 pb->next_lblock = 0;
3204
3205 eof_lblk = ((EXT2_I_SIZE(inode) + fs->blocksize - 1) >>
3206 EXT2_BLOCK_SIZE_BITS(fs->super)) - 1;
3207 scan_extent_node(ctx, pctx, pb, 0, 0, eof_lblk, ehandle, 1);
3208 if (pctx->errcode &&
3209 fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) {
3210 pb->num_blocks = 0;
3211 inode->i_blocks = 0;
3212 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
3213 "check_blocks_extents");
3214 pctx->errcode = 0;
3215 }
3216 ext2fs_extent_free(ehandle);
3217
3218 /* Rebuild unless it's a dir and we're rehashing it */
3219 if (LINUX_S_ISDIR(inode->i_mode) &&
3220 e2fsck_dir_will_be_rehashed(ctx, ino))
3221 return;
3222
3223 if (ctx->options & E2F_OPT_CONVERT_BMAP)
3224 e2fsck_rebuild_extents_later(ctx, ino);
3225 else
3226 e2fsck_should_rebuild_extents(ctx, pctx, &pb->eti, &info);
3227 }
3228
3229 /*
3230 * In fact we don't need to check blocks for an inode with inline data
3231 * because this inode doesn't have any blocks. In this function all
3232 * we need to do is add this inode into dblist when it is a directory.
3233 */
3234 static void check_blocks_inline_data(e2fsck_t ctx, struct problem_context *pctx,
3235 struct process_block_struct *pb)
3236 {
3237 int flags;
3238 size_t inline_data_size = 0;
3239
3240 if (!pb->is_dir) {
3241 pctx->errcode = 0;
3242 return;
3243 }
3244
3245 /* Process the dirents in i_block[] as the "first" block. */
3246 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 0);
3247 if (pctx->errcode)
3248 goto err;
3249
3250 /* Process the dirents in the EA as a "second" block. */
3251 flags = ctx->fs->flags;
3252 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3253 pctx->errcode = ext2fs_inline_data_size(ctx->fs, pb->ino,
3254 &inline_data_size);
3255 ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3256 (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3257 if (pctx->errcode) {
3258 pctx->errcode = 0;
3259 return;
3260 }
3261
3262 if (inline_data_size <= EXT4_MIN_INLINE_DATA_SIZE)
3263 return;
3264
3265 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 1);
3266 if (pctx->errcode)
3267 goto err;
3268
3269 return;
3270 err:
3271 pctx->blk = 0;
3272 pctx->num = 0;
3273 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3274 ctx->flags |= E2F_FLAG_ABORT;
3275 }
3276
3277 /*
3278 * This subroutine is called on each inode to account for all of the
3279 * blocks used by that inode.
3280 */
3281 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
3282 char *block_buf, const struct ea_quota *ea_ibody_quota)
3283 {
3284 ext2_filsys fs = ctx->fs;
3285 struct process_block_struct pb;
3286 ext2_ino_t ino = pctx->ino;
3287 struct ext2_inode *inode = pctx->inode;
3288 unsigned bad_size = 0;
3289 int dirty_inode = 0;
3290 int extent_fs;
3291 int inlinedata_fs;
3292 __u64 size;
3293 struct ea_quota ea_block_quota;
3294
3295 pb.ino = ino;
3296 pb.num_blocks = EXT2FS_B2C(ctx->fs,
3297 ea_ibody_quota ? ea_ibody_quota->blocks : 0);
3298 pb.last_block = ~0;
3299 pb.last_init_lblock = -1;
3300 pb.last_db_block = -1;
3301 pb.num_illegal_blocks = 0;
3302 pb.suppress = 0; pb.clear = 0;
3303 pb.fragmented = 0;
3304 pb.compressed = 0;
3305 pb.previous_block = 0;
3306 pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
3307 pb.is_reg = LINUX_S_ISREG(inode->i_mode);
3308 pb.max_blocks = 1U << (31 - fs->super->s_log_block_size);
3309 pb.inode = inode;
3310 pb.pctx = pctx;
3311 pb.ctx = ctx;
3312 pb.inode_modified = 0;
3313 pb.eti.force_rebuild = 0;
3314 pctx->ino = ino;
3315 pctx->errcode = 0;
3316
3317 extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
3318 inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
3319
3320 if (check_ext_attr(ctx, pctx, block_buf, &ea_block_quota)) {
3321 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3322 goto out;
3323 pb.num_blocks += EXT2FS_B2C(ctx->fs, ea_block_quota.blocks);
3324 }
3325
3326 if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL))
3327 check_blocks_inline_data(ctx, pctx, &pb);
3328 else if (ext2fs_inode_has_valid_blocks2(fs, inode)) {
3329 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
3330 check_blocks_extents(ctx, pctx, &pb);
3331 else {
3332 int flags;
3333 /*
3334 * If we've modified the inode, write it out before
3335 * iterate() tries to use it.
3336 */
3337 if (dirty_inode) {
3338 e2fsck_write_inode(ctx, ino, inode,
3339 "check_blocks");
3340 dirty_inode = 0;
3341 }
3342 flags = fs->flags;
3343 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3344 pctx->errcode = ext2fs_block_iterate3(fs, ino,
3345 pb.is_dir ? BLOCK_FLAG_HOLE : 0,
3346 block_buf, process_block, &pb);
3347 /*
3348 * We do not have uninitialized extents in non extent
3349 * files.
3350 */
3351 pb.last_init_lblock = pb.last_block;
3352 /*
3353 * If iterate() changed a block mapping, we have to
3354 * re-read the inode. If we decide to clear the
3355 * inode after clearing some stuff, we'll re-write the
3356 * bad mappings into the inode!
3357 */
3358 if (pb.inode_modified)
3359 e2fsck_read_inode(ctx, ino, inode,
3360 "check_blocks");
3361 fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3362 (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3363
3364 if (ctx->options & E2F_OPT_CONVERT_BMAP) {
3365 #ifdef DEBUG
3366 printf("bmap rebuild ino=%d\n", ino);
3367 #endif
3368 if (!LINUX_S_ISDIR(inode->i_mode) ||
3369 !e2fsck_dir_will_be_rehashed(ctx, ino))
3370 e2fsck_rebuild_extents_later(ctx, ino);
3371 }
3372 }
3373 }
3374 end_problem_latch(ctx, PR_LATCH_BLOCK);
3375 end_problem_latch(ctx, PR_LATCH_TOOBIG);
3376 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3377 goto out;
3378 if (pctx->errcode)
3379 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
3380
3381 if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) {
3382 if (LINUX_S_ISDIR(inode->i_mode))
3383 ctx->fs_fragmented_dir++;
3384 else
3385 ctx->fs_fragmented++;
3386 }
3387
3388 if (pb.clear) {
3389 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
3390 "check_blocks");
3391 return;
3392 }
3393
3394 if (inode->i_flags & EXT2_INDEX_FL) {
3395 if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
3396 inode->i_flags &= ~EXT2_INDEX_FL;
3397 dirty_inode++;
3398 } else {
3399 e2fsck_add_dx_dir(ctx, ino, inode, pb.last_block+1);
3400 }
3401 }
3402
3403 if (!pb.num_blocks && pb.is_dir &&
3404 !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
3405 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
3406 e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
3407 ctx->fs_directory_count--;
3408 return;
3409 }
3410 }
3411
3412 if (ino != quota_type2inum(PRJQUOTA, fs->super) &&
3413 (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INODE(ctx->fs->super)) &&
3414 !(inode->i_flags & EXT4_EA_INODE_FL)) {
3415 quota_data_add(ctx->qctx, (struct ext2_inode_large *) inode,
3416 ino,
3417 pb.num_blocks * EXT2_CLUSTER_SIZE(fs->super));
3418 quota_data_inodes(ctx->qctx, (struct ext2_inode_large *) inode,
3419 ino, (ea_ibody_quota ?
3420 ea_ibody_quota->inodes : 0) +
3421 ea_block_quota.inodes + 1);
3422 }
3423
3424 if (!ext2fs_has_feature_huge_file(fs->super) ||
3425 !(inode->i_flags & EXT4_HUGE_FILE_FL))
3426 pb.num_blocks *= (fs->blocksize / 512);
3427 pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs);
3428 #if 0
3429 printf("inode %u, i_size = %u, last_block = %llu, i_blocks=%llu, num_blocks = %llu\n",
3430 ino, inode->i_size, pb.last_block, ext2fs_inode_i_blocks(fs, inode),
3431 pb.num_blocks);
3432 #endif
3433 if (pb.is_dir) {
3434 unsigned nblock = inode->i_size >> EXT2_BLOCK_SIZE_BITS(fs->super);
3435 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
3436 int flags;
3437 size_t sz = 0;
3438 errcode_t err;
3439
3440 flags = ctx->fs->flags;
3441 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3442 err = ext2fs_inline_data_size(ctx->fs, pctx->ino,
3443 &sz);
3444 ctx->fs->flags = (flags &
3445 EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3446 (ctx->fs->flags &
3447 ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3448 if (err || sz != inode->i_size) {
3449 bad_size = 7;
3450 pctx->num = sz;
3451 }
3452 } else if (inode->i_size & (fs->blocksize - 1))
3453 bad_size = 5;
3454 else if (nblock > (pb.last_block + 1))
3455 bad_size = 1;
3456 else if (nblock < (pb.last_block + 1)) {
3457 if (((pb.last_block + 1) - nblock) >
3458 fs->super->s_prealloc_dir_blocks)
3459 bad_size = 2;
3460 }
3461 } else {
3462 size = EXT2_I_SIZE(inode);
3463 if ((pb.last_init_lblock >= 0) &&
3464 /* Do not allow initialized allocated blocks past i_size*/
3465 (size < (__u64)pb.last_init_lblock * fs->blocksize) &&
3466 !(inode->i_flags & EXT4_VERITY_FL))
3467 bad_size = 3;
3468 else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
3469 size > ext2_max_sizes[fs->super->s_log_block_size])
3470 /* too big for a direct/indirect-mapped file */
3471 bad_size = 4;
3472 else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
3473 size >
3474 ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1))
3475 /* too big for an extent-based file - 32bit ee_block */
3476 bad_size = 6;
3477 }
3478 /* i_size for symlinks is checked elsewhere */
3479 if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
3480 /* Did inline_data set pctx->num earlier? */
3481 if (bad_size != 7)
3482 pctx->num = (pb.last_block + 1) * fs->blocksize;
3483 pctx->group = bad_size;
3484 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
3485 if (LINUX_S_ISDIR(inode->i_mode))
3486 pctx->num &= 0xFFFFFFFFULL;
3487 ext2fs_inode_size_set(fs, inode, pctx->num);
3488 if (EXT2_I_SIZE(inode) == 0 &&
3489 (inode->i_flags & EXT4_INLINE_DATA_FL)) {
3490 memset(inode->i_block, 0,
3491 sizeof(inode->i_block));
3492 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
3493 }
3494 dirty_inode++;
3495 }
3496 pctx->num = 0;
3497 }
3498 if (LINUX_S_ISREG(inode->i_mode) &&
3499 ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
3500 ctx->large_files++;
3501 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
3502 ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) ||
3503 (ext2fs_has_feature_huge_file(fs->super) &&
3504 (inode->i_flags & EXT4_HUGE_FILE_FL) &&
3505 (inode->osd2.linux2.l_i_blocks_hi != 0)))) {
3506 pctx->num = pb.num_blocks;
3507 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
3508 inode->i_blocks = pb.num_blocks;
3509 inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32;
3510 dirty_inode++;
3511 }
3512 pctx->num = 0;
3513 }
3514
3515 /*
3516 * The kernel gets mad if we ask it to allocate bigalloc clusters to
3517 * a block mapped file, so rebuild it as an extent file. We can skip
3518 * symlinks because they're never rewritten.
3519 */
3520 if (ext2fs_has_feature_bigalloc(fs->super) &&
3521 (LINUX_S_ISREG(inode->i_mode) || LINUX_S_ISDIR(inode->i_mode)) &&
3522 ext2fs_inode_data_blocks2(fs, inode) > 0 &&
3523 (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INO(fs->super)) &&
3524 !(inode->i_flags & (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)) &&
3525 fix_problem(ctx, PR_1_NO_BIGALLOC_BLOCKMAP_FILES, pctx)) {
3526 pctx->errcode = e2fsck_rebuild_extents_later(ctx, ino);
3527 if (pctx->errcode)
3528 goto out;
3529 }
3530
3531 if (ctx->dirs_to_hash && pb.is_dir &&
3532 !(ctx->lost_and_found && ctx->lost_and_found == ino) &&
3533 !(inode->i_flags & EXT2_INDEX_FL) &&
3534 ((inode->i_size / fs->blocksize) >= 3))
3535 e2fsck_rehash_dir_later(ctx, ino);
3536
3537 out:
3538 if (dirty_inode)
3539 e2fsck_write_inode(ctx, ino, inode, "check_blocks");
3540 }
3541
3542 #if 0
3543 /*
3544 * Helper function called by process block when an illegal block is
3545 * found. It returns a description about why the block is illegal
3546 */
3547 static char *describe_illegal_block(ext2_filsys fs, blk64_t block)
3548 {
3549 blk64_t super;
3550 int i;
3551 static char problem[80];
3552
3553 super = fs->super->s_first_data_block;
3554 strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
3555 if (block < super) {
3556 sprintf(problem, "< FIRSTBLOCK (%u)", super);
3557 return(problem);
3558 } else if (block >= ext2fs_blocks_count(fs->super)) {
3559 sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super));
3560 return(problem);
3561 }
3562 for (i = 0; i < fs->group_desc_count; i++) {
3563 if (block == super) {
3564 sprintf(problem, "is the superblock in group %d", i);
3565 break;
3566 }
3567 if (block > super &&
3568 block <= (super + fs->desc_blocks)) {
3569 sprintf(problem, "is in the group descriptors "
3570 "of group %d", i);
3571 break;
3572 }
3573 if (block == ext2fs_block_bitmap_loc(fs, i)) {
3574 sprintf(problem, "is the block bitmap of group %d", i);
3575 break;
3576 }
3577 if (block == ext2fs_inode_bitmap_loc(fs, i)) {
3578 sprintf(problem, "is the inode bitmap of group %d", i);
3579 break;
3580 }
3581 if (block >= ext2fs_inode_table_loc(fs, i) &&
3582 (block < ext2fs_inode_table_loc(fs, i)
3583 + fs->inode_blocks_per_group)) {
3584 sprintf(problem, "is in the inode table of group %d",
3585 i);
3586 break;
3587 }
3588 super += fs->super->s_blocks_per_group;
3589 }
3590 return(problem);
3591 }
3592 #endif
3593
3594 /*
3595 * This is a helper function for check_blocks().
3596 */
3597 static int process_block(ext2_filsys fs,
3598 blk64_t *block_nr,
3599 e2_blkcnt_t blockcnt,
3600 blk64_t ref_block EXT2FS_ATTR((unused)),
3601 int ref_offset EXT2FS_ATTR((unused)),
3602 void *priv_data)
3603 {
3604 struct process_block_struct *p;
3605 struct problem_context *pctx;
3606 blk64_t blk = *block_nr;
3607 int ret_code = 0;
3608 problem_t problem = 0;
3609 e2fsck_t ctx;
3610
3611 p = (struct process_block_struct *) priv_data;
3612 pctx = p->pctx;
3613 ctx = p->ctx;
3614
3615 /*
3616 * For a directory, add logical block zero for processing even if it's
3617 * not mapped or we'll be perennially stuck with broken "." and ".."
3618 * entries.
3619 */
3620 if (p->is_dir && blockcnt == 0 && blk == 0) {
3621 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino, 0, 0);
3622 if (pctx->errcode) {
3623 pctx->blk = blk;
3624 pctx->num = blockcnt;
3625 goto failed_add_dir_block;
3626 }
3627 p->last_db_block++;
3628 }
3629
3630 if (blk == 0)
3631 return 0;
3632
3633 #if 0
3634 printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
3635 blockcnt);
3636 #endif
3637
3638 /*
3639 * Simplistic fragmentation check. We merely require that the
3640 * file be contiguous. (Which can never be true for really
3641 * big files that are greater than a block group.)
3642 */
3643 if (p->previous_block && p->ino != EXT2_RESIZE_INO) {
3644 if (p->previous_block+1 != blk) {
3645 if (ctx->options & E2F_OPT_FRAGCHECK) {
3646 char type = '?';
3647
3648 if (p->is_dir)
3649 type = 'd';
3650 else if (p->is_reg)
3651 type = 'f';
3652
3653 printf(_("%6lu(%c): expecting %6lu "
3654 "got phys %6lu (blkcnt %lld)\n"),
3655 (unsigned long) pctx->ino, type,
3656 (unsigned long) p->previous_block+1,
3657 (unsigned long) blk,
3658 blockcnt);
3659 }
3660 p->fragmented = 1;
3661 }
3662 }
3663
3664 if (p->is_dir && !ext2fs_has_feature_largedir(fs->super) &&
3665 blockcnt > (1 << (21 - fs->super->s_log_block_size)))
3666 problem = PR_1_TOOBIG_DIR;
3667 if (p->is_dir && p->num_blocks + 1 >= p->max_blocks)
3668 problem = PR_1_TOOBIG_DIR;
3669 if (p->is_reg && p->num_blocks + 1 >= p->max_blocks)
3670 problem = PR_1_TOOBIG_REG;
3671 if (!p->is_dir && !p->is_reg && blockcnt > 0)
3672 problem = PR_1_TOOBIG_SYMLINK;
3673
3674 if (blk < fs->super->s_first_data_block ||
3675 blk >= ext2fs_blocks_count(fs->super))
3676 problem = PR_1_ILLEGAL_BLOCK_NUM;
3677
3678 /*
3679 * If this IND/DIND/TIND block is squatting atop some critical metadata
3680 * (group descriptors, superblock, bitmap, inode table), any write to
3681 * "fix" mapping problems will destroy the metadata. We'll let pass 1b
3682 * fix that and restart fsck.
3683 */
3684 if (blockcnt < 0 &&
3685 p->ino != EXT2_RESIZE_INO &&
3686 blk < ctx->fs->super->s_blocks_count &&
3687 ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk)) {
3688 pctx->blk = blk;
3689 fix_problem(ctx, PR_1_CRITICAL_METADATA_COLLISION, pctx);
3690 if ((ctx->options & E2F_OPT_NO) == 0)
3691 ctx->flags |= E2F_FLAG_RESTART_LATER;
3692 }
3693
3694 if (problem) {
3695 p->num_illegal_blocks++;
3696 /*
3697 * A bit of subterfuge here -- we're trying to fix a block
3698 * mapping, but the IND/DIND/TIND block could have collided
3699 * with some critical metadata. So, fix the in-core mapping so
3700 * iterate won't go insane, but return 0 instead of
3701 * BLOCK_CHANGED so that it won't write the remapping out to
3702 * our multiply linked block.
3703 *
3704 * Even if we previously determined that an *IND block
3705 * conflicts with critical metadata, we must still try to
3706 * iterate the *IND block as if it is an *IND block to find and
3707 * mark the blocks it points to. Better to be overly cautious
3708 * with the used_blocks map so that we don't move the *IND
3709 * block to a block that's really in use!
3710 */
3711 if (p->ino != EXT2_RESIZE_INO &&
3712 ref_block != 0 &&
3713 ext2fs_test_block_bitmap2(ctx->block_metadata_map,
3714 ref_block)) {
3715 *block_nr = 0;
3716 return 0;
3717 }
3718 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
3719 if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
3720 p->clear = 1;
3721 return BLOCK_ABORT;
3722 }
3723 if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
3724 p->suppress = 1;
3725 set_latch_flags(PR_LATCH_BLOCK,
3726 PRL_SUPPRESS, 0);
3727 }
3728 }
3729 pctx->blk = blk;
3730 pctx->blkcount = blockcnt;
3731 if (fix_problem(ctx, problem, pctx)) {
3732 blk = *block_nr = 0;
3733 ret_code = BLOCK_CHANGED;
3734 p->inode_modified = 1;
3735 /*
3736 * If the directory block is too big and is beyond the
3737 * end of the FS, don't bother trying to add it for
3738 * processing -- the kernel would never have created a
3739 * directory this large, and we risk an ENOMEM abort.
3740 * In any case, the toobig handler for extent-based
3741 * directories also doesn't feed toobig blocks to
3742 * pass 2.
3743 */
3744 if (problem == PR_1_TOOBIG_DIR)
3745 return ret_code;
3746 goto mark_dir;
3747 } else
3748 return 0;
3749 }
3750
3751 if (p->ino == EXT2_RESIZE_INO) {
3752 /*
3753 * The resize inode has already be sanity checked
3754 * during pass #0 (the superblock checks). All we
3755 * have to do is mark the double indirect block as
3756 * being in use; all of the other blocks are handled
3757 * by mark_table_blocks()).
3758 */
3759 if (blockcnt == BLOCK_COUNT_DIND)
3760 mark_block_used(ctx, blk);
3761 p->num_blocks++;
3762 } else if (!(ctx->fs->cluster_ratio_bits &&
3763 p->previous_block &&
3764 (EXT2FS_B2C(ctx->fs, blk) ==
3765 EXT2FS_B2C(ctx->fs, p->previous_block)) &&
3766 (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
3767 ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
3768 mark_block_used(ctx, blk);
3769 p->num_blocks++;
3770 } else if (has_unaligned_cluster_map(ctx, p->previous_block,
3771 p->last_block, blk, blockcnt)) {
3772 pctx->blk = blockcnt;
3773 pctx->blk2 = blk;
3774 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
3775 mark_block_used(ctx, blk);
3776 mark_block_used(ctx, blk);
3777 }
3778 if (blockcnt >= 0)
3779 p->last_block = blockcnt;
3780 p->previous_block = blk;
3781 mark_dir:
3782 if (p->is_dir && (blockcnt >= 0)) {
3783 while (++p->last_db_block < blockcnt) {
3784 pctx->errcode = ext2fs_add_dir_block2(fs->dblist,
3785 p->ino, 0,
3786 p->last_db_block);
3787 if (pctx->errcode) {
3788 pctx->blk = 0;
3789 pctx->num = p->last_db_block;
3790 goto failed_add_dir_block;
3791 }
3792 }
3793 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino,
3794 blk, blockcnt);
3795 if (pctx->errcode) {
3796 pctx->blk = blk;
3797 pctx->num = blockcnt;
3798 failed_add_dir_block:
3799 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3800 /* Should never get here */
3801 ctx->flags |= E2F_FLAG_ABORT;
3802 return BLOCK_ABORT;
3803 }
3804 }
3805 return ret_code;
3806 }
3807
3808 static int process_bad_block(ext2_filsys fs,
3809 blk64_t *block_nr,
3810 e2_blkcnt_t blockcnt,
3811 blk64_t ref_block EXT2FS_ATTR((unused)),
3812 int ref_offset EXT2FS_ATTR((unused)),
3813 void *priv_data)
3814 {
3815 struct process_block_struct *p;
3816 blk64_t blk = *block_nr;
3817 blk64_t first_block;
3818 dgrp_t i;
3819 struct problem_context *pctx;
3820 e2fsck_t ctx;
3821
3822 if (!blk)
3823 return 0;
3824
3825 p = (struct process_block_struct *) priv_data;
3826 ctx = p->ctx;
3827 pctx = p->pctx;
3828
3829 pctx->ino = EXT2_BAD_INO;
3830 pctx->blk = blk;
3831 pctx->blkcount = blockcnt;
3832
3833 if ((blk < fs->super->s_first_data_block) ||
3834 (blk >= ext2fs_blocks_count(fs->super))) {
3835 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
3836 *block_nr = 0;
3837 return BLOCK_CHANGED;
3838 } else
3839 return 0;
3840 }
3841
3842 if (blockcnt < 0) {
3843 if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) {
3844 p->bbcheck = 1;
3845 if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
3846 *block_nr = 0;
3847 return BLOCK_CHANGED;
3848 }
3849 } else if (ext2fs_test_block_bitmap2(ctx->block_found_map,
3850 blk)) {
3851 p->bbcheck = 1;
3852 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
3853 pctx)) {
3854 *block_nr = 0;
3855 return BLOCK_CHANGED;
3856 }
3857 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3858 return BLOCK_ABORT;
3859 } else
3860 mark_block_used(ctx, blk);
3861 return 0;
3862 }
3863 #if 0
3864 printf ("DEBUG: Marking %u as bad.\n", blk);
3865 #endif
3866 ctx->fs_badblocks_count++;
3867 /*
3868 * If the block is not used, then mark it as used and return.
3869 * If it is already marked as found, this must mean that
3870 * there's an overlap between the filesystem table blocks
3871 * (bitmaps and inode table) and the bad block list.
3872 */
3873 if (!ext2fs_test_block_bitmap2(ctx->block_found_map, blk)) {
3874 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
3875 return 0;
3876 }
3877 /*
3878 * Try to find the where the filesystem block was used...
3879 */
3880 first_block = fs->super->s_first_data_block;
3881
3882 for (i = 0; i < fs->group_desc_count; i++ ) {
3883 pctx->group = i;
3884 pctx->blk = blk;
3885 if (!ext2fs_bg_has_super(fs, i))
3886 goto skip_super;
3887 if (blk == first_block) {
3888 if (i == 0) {
3889 if (fix_problem(ctx,
3890 PR_1_BAD_PRIMARY_SUPERBLOCK,
3891 pctx)) {
3892 *block_nr = 0;
3893 return BLOCK_CHANGED;
3894 }
3895 return 0;
3896 }
3897 fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
3898 return 0;
3899 }
3900 if ((blk > first_block) &&
3901 (blk <= first_block + fs->desc_blocks)) {
3902 if (i == 0) {
3903 pctx->blk = *block_nr;
3904 if (fix_problem(ctx,
3905 PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
3906 *block_nr = 0;
3907 return BLOCK_CHANGED;
3908 }
3909 return 0;
3910 }
3911 fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
3912 return 0;
3913 }
3914 skip_super:
3915 if (blk == ext2fs_block_bitmap_loc(fs, i)) {
3916 if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
3917 ctx->invalid_block_bitmap_flag[i]++;
3918 ctx->invalid_bitmaps++;
3919 }
3920 return 0;
3921 }
3922 if (blk == ext2fs_inode_bitmap_loc(fs, i)) {
3923 if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
3924 ctx->invalid_inode_bitmap_flag[i]++;
3925 ctx->invalid_bitmaps++;
3926 }
3927 return 0;
3928 }
3929 if ((blk >= ext2fs_inode_table_loc(fs, i)) &&
3930 (blk < (ext2fs_inode_table_loc(fs, i) +
3931 fs->inode_blocks_per_group))) {
3932 /*
3933 * If there are bad blocks in the inode table,
3934 * the inode scan code will try to do
3935 * something reasonable automatically.
3936 */
3937 return 0;
3938 }
3939 first_block += fs->super->s_blocks_per_group;
3940 }
3941 /*
3942 * If we've gotten to this point, then the only
3943 * possibility is that the bad block inode meta data
3944 * is using a bad block.
3945 */
3946 if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
3947 (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
3948 (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
3949 p->bbcheck = 1;
3950 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
3951 *block_nr = 0;
3952 return BLOCK_CHANGED;
3953 }
3954 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3955 return BLOCK_ABORT;
3956 return 0;
3957 }
3958
3959 pctx->group = -1;
3960
3961 /* Warn user that the block wasn't claimed */
3962 fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
3963
3964 return 0;
3965 }
3966
3967 static void new_table_block(e2fsck_t ctx, blk64_t first_block, dgrp_t group,
3968 const char *name, int num, blk64_t *new_block)
3969 {
3970 ext2_filsys fs = ctx->fs;
3971 dgrp_t last_grp;
3972 blk64_t old_block = *new_block;
3973 blk64_t last_block;
3974 dgrp_t flexbg;
3975 unsigned flexbg_size;
3976 int i, is_flexbg;
3977 char *buf;
3978 struct problem_context pctx;
3979
3980 clear_problem_context(&pctx);
3981
3982 pctx.group = group;
3983 pctx.blk = old_block;
3984 pctx.str = name;
3985
3986 /*
3987 * For flex_bg filesystems, first try to allocate the metadata
3988 * within the flex_bg, and if that fails then try finding the
3989 * space anywhere in the filesystem.
3990 */
3991 is_flexbg = ext2fs_has_feature_flex_bg(fs->super);
3992 if (is_flexbg) {
3993 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
3994 flexbg = group / flexbg_size;
3995 first_block = ext2fs_group_first_block2(fs,
3996 flexbg_size * flexbg);
3997 last_grp = group | (flexbg_size - 1);
3998 if (last_grp >= fs->group_desc_count)
3999 last_grp = fs->group_desc_count - 1;
4000 last_block = ext2fs_group_last_block2(fs, last_grp);
4001 } else
4002 last_block = ext2fs_group_last_block2(fs, group);
4003 pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block,
4004 num, ctx->block_found_map,
4005 new_block);
4006 if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL))
4007 pctx.errcode = ext2fs_get_free_blocks2(fs,
4008 fs->super->s_first_data_block,
4009 ext2fs_blocks_count(fs->super),
4010 num, ctx->block_found_map, new_block);
4011 if (pctx.errcode) {
4012 pctx.num = num;
4013 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
4014 ext2fs_unmark_valid(fs);
4015 ctx->flags |= E2F_FLAG_ABORT;
4016 return;
4017 }
4018 pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
4019 if (pctx.errcode) {
4020 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
4021 ext2fs_unmark_valid(fs);
4022 ctx->flags |= E2F_FLAG_ABORT;
4023 return;
4024 }
4025 ext2fs_mark_super_dirty(fs);
4026 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
4027 pctx.blk2 = *new_block;
4028 fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
4029 PR_1_RELOC_TO), &pctx);
4030 pctx.blk2 = 0;
4031 for (i = 0; i < num; i++) {
4032 pctx.blk = i;
4033 ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i);
4034 if (old_block) {
4035 pctx.errcode = io_channel_read_blk64(fs->io,
4036 old_block + i, 1, buf);
4037 if (pctx.errcode)
4038 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
4039 pctx.blk = (*new_block) + i;
4040 pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk,
4041 1, buf);
4042 } else {
4043 pctx.blk = (*new_block) + i;
4044 pctx.errcode = ext2fs_zero_blocks2(fs, pctx.blk, 1,
4045 NULL, NULL);
4046 }
4047
4048 if (pctx.errcode)
4049 fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
4050 }
4051 ext2fs_free_mem(&buf);
4052 }
4053
4054 /*
4055 * This routine gets called at the end of pass 1 if bad blocks are
4056 * detected in the superblock, group descriptors, inode_bitmaps, or
4057 * block bitmaps. At this point, all of the blocks have been mapped
4058 * out, so we can try to allocate new block(s) to replace the bad
4059 * blocks.
4060 */
4061 static void handle_fs_bad_blocks(e2fsck_t ctx)
4062 {
4063 ext2_filsys fs = ctx->fs;
4064 dgrp_t i;
4065 blk64_t first_block;
4066 blk64_t new_blk;
4067
4068 for (i = 0; i < fs->group_desc_count; i++) {
4069 first_block = ext2fs_group_first_block2(fs, i);
4070
4071 if (ctx->invalid_block_bitmap_flag[i]) {
4072 new_blk = ext2fs_block_bitmap_loc(fs, i);
4073 new_table_block(ctx, first_block, i, _("block bitmap"),
4074 1, &new_blk);
4075 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
4076 }
4077 if (ctx->invalid_inode_bitmap_flag[i]) {
4078 new_blk = ext2fs_inode_bitmap_loc(fs, i);
4079 new_table_block(ctx, first_block, i, _("inode bitmap"),
4080 1, &new_blk);
4081 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
4082 }
4083 if (ctx->invalid_inode_table_flag[i]) {
4084 new_blk = ext2fs_inode_table_loc(fs, i);
4085 new_table_block(ctx, first_block, i, _("inode table"),
4086 fs->inode_blocks_per_group,
4087 &new_blk);
4088 ext2fs_inode_table_loc_set(fs, i, new_blk);
4089 ctx->flags |= E2F_FLAG_RESTART;
4090 }
4091 }
4092 ctx->invalid_bitmaps = 0;
4093 }
4094
4095 /*
4096 * This routine marks all blocks which are used by the superblock,
4097 * group descriptors, inode bitmaps, and block bitmaps.
4098 */
4099 static void mark_table_blocks(e2fsck_t ctx)
4100 {
4101 ext2_filsys fs = ctx->fs;
4102 blk64_t b;
4103 dgrp_t i;
4104 unsigned int j;
4105 struct problem_context pctx;
4106
4107 clear_problem_context(&pctx);
4108
4109 for (i = 0; i < fs->group_desc_count; i++) {
4110 pctx.group = i;
4111
4112 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
4113 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_metadata_map);
4114
4115 /*
4116 * Mark the blocks used for the inode table
4117 */
4118 if (ext2fs_inode_table_loc(fs, i)) {
4119 for (j = 0, b = ext2fs_inode_table_loc(fs, i);
4120 j < fs->inode_blocks_per_group;
4121 j++, b++) {
4122 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4123 b)) {
4124 pctx.blk = b;
4125 if (!ctx->invalid_inode_table_flag[i] &&
4126 fix_problem(ctx,
4127 PR_1_ITABLE_CONFLICT, &pctx)) {
4128 ctx->invalid_inode_table_flag[i]++;
4129 ctx->invalid_bitmaps++;
4130 }
4131 } else {
4132 ext2fs_mark_block_bitmap2(
4133 ctx->block_found_map, b);
4134 ext2fs_mark_block_bitmap2(
4135 ctx->block_metadata_map, b);
4136 }
4137 }
4138 }
4139
4140 /*
4141 * Mark block used for the block bitmap
4142 */
4143 if (ext2fs_block_bitmap_loc(fs, i)) {
4144 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4145 ext2fs_block_bitmap_loc(fs, i))) {
4146 pctx.blk = ext2fs_block_bitmap_loc(fs, i);
4147 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
4148 ctx->invalid_block_bitmap_flag[i]++;
4149 ctx->invalid_bitmaps++;
4150 }
4151 } else {
4152 ext2fs_mark_block_bitmap2(ctx->block_found_map,
4153 ext2fs_block_bitmap_loc(fs, i));
4154 ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
4155 ext2fs_block_bitmap_loc(fs, i));
4156 }
4157 }
4158 /*
4159 * Mark block used for the inode bitmap
4160 */
4161 if (ext2fs_inode_bitmap_loc(fs, i)) {
4162 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4163 ext2fs_inode_bitmap_loc(fs, i))) {
4164 pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
4165 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
4166 ctx->invalid_inode_bitmap_flag[i]++;
4167 ctx->invalid_bitmaps++;
4168 }
4169 } else {
4170 ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
4171 ext2fs_inode_bitmap_loc(fs, i));
4172 ext2fs_mark_block_bitmap2(ctx->block_found_map,
4173 ext2fs_inode_bitmap_loc(fs, i));
4174 }
4175 }
4176 }
4177 }
4178
4179 /*
4180 * These subroutines short circuits ext2fs_get_blocks and
4181 * ext2fs_check_directory; we use them since we already have the inode
4182 * structure, so there's no point in letting the ext2fs library read
4183 * the inode again.
4184 */
4185 static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
4186 blk_t *blocks)
4187 {
4188 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4189 int i;
4190
4191 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4192 return EXT2_ET_CALLBACK_NOTHANDLED;
4193
4194 for (i=0; i < EXT2_N_BLOCKS; i++)
4195 blocks[i] = ctx->stashed_inode->i_block[i];
4196 return 0;
4197 }
4198
4199 static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
4200 struct ext2_inode *inode)
4201 {
4202 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4203
4204 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4205 return EXT2_ET_CALLBACK_NOTHANDLED;
4206 *inode = *ctx->stashed_inode;
4207 return 0;
4208 }
4209
4210 static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
4211 struct ext2_inode *inode)
4212 {
4213 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4214
4215 if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
4216 (inode != ctx->stashed_inode))
4217 *ctx->stashed_inode = *inode;
4218 return EXT2_ET_CALLBACK_NOTHANDLED;
4219 }
4220
4221 static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
4222 {
4223 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4224
4225 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4226 return EXT2_ET_CALLBACK_NOTHANDLED;
4227
4228 if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
4229 return EXT2_ET_NO_DIRECTORY;
4230 return 0;
4231 }
4232
4233 static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal,
4234 blk64_t *ret)
4235 {
4236 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4237 errcode_t retval;
4238 blk64_t new_block;
4239
4240 if (ctx->block_found_map) {
4241 retval = ext2fs_new_block2(fs, goal, ctx->block_found_map,
4242 &new_block);
4243 if (retval)
4244 return retval;
4245 if (fs->block_map) {
4246 ext2fs_mark_block_bitmap2(fs->block_map, new_block);
4247 ext2fs_mark_bb_dirty(fs);
4248 }
4249 } else {
4250 if (!fs->block_map) {
4251 retval = ext2fs_read_block_bitmap(fs);
4252 if (retval)
4253 return retval;
4254 }
4255
4256 retval = ext2fs_new_block2(fs, goal, fs->block_map, &new_block);
4257 if (retval)
4258 return retval;
4259 }
4260
4261 *ret = new_block;
4262 return (0);
4263 }
4264
4265 static errcode_t e2fsck_new_range(ext2_filsys fs, int flags, blk64_t goal,
4266 blk64_t len, blk64_t *pblk, blk64_t *plen)
4267 {
4268 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4269 errcode_t retval;
4270
4271 if (ctx->block_found_map)
4272 return ext2fs_new_range(fs, flags, goal, len,
4273 ctx->block_found_map, pblk, plen);
4274
4275 if (!fs->block_map) {
4276 retval = ext2fs_read_block_bitmap(fs);
4277 if (retval)
4278 return retval;
4279 }
4280
4281 return ext2fs_new_range(fs, flags, goal, len, fs->block_map,
4282 pblk, plen);
4283 }
4284
4285 static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
4286 {
4287 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4288
4289 /* Never free a critical metadata block */
4290 if (ctx->block_found_map &&
4291 ctx->block_metadata_map &&
4292 inuse < 0 &&
4293 ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk))
4294 return;
4295
4296 if (ctx->block_found_map) {
4297 if (inuse > 0)
4298 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
4299 else
4300 ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk);
4301 }
4302 }
4303
4304 static void e2fsck_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
4305 blk_t num, int inuse)
4306 {
4307 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4308
4309 /* Never free a critical metadata block */
4310 if (ctx->block_found_map &&
4311 ctx->block_metadata_map &&
4312 inuse < 0 &&
4313 ext2fs_test_block_bitmap_range2(ctx->block_metadata_map, blk, num))
4314 return;
4315
4316 if (ctx->block_found_map) {
4317 if (inuse > 0)
4318 ext2fs_mark_block_bitmap_range2(ctx->block_found_map,
4319 blk, num);
4320 else
4321 ext2fs_unmark_block_bitmap_range2(ctx->block_found_map,
4322 blk, num);
4323 }
4324 }
4325
4326 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts)
4327 {
4328 ext2_filsys fs = ctx->fs;
4329
4330 if (use_shortcuts) {
4331 fs->get_blocks = pass1_get_blocks;
4332 fs->check_directory = pass1_check_directory;
4333 fs->read_inode = pass1_read_inode;
4334 fs->write_inode = pass1_write_inode;
4335 ctx->stashed_ino = 0;
4336 } else {
4337 fs->get_blocks = 0;
4338 fs->check_directory = 0;
4339 fs->read_inode = 0;
4340 fs->write_inode = 0;
4341 }
4342 }
4343
4344 void e2fsck_intercept_block_allocations(e2fsck_t ctx)
4345 {
4346 ext2fs_set_alloc_block_callback(ctx->fs, e2fsck_get_alloc_block, 0);
4347 ext2fs_set_block_alloc_stats_callback(ctx->fs,
4348 e2fsck_block_alloc_stats, 0);
4349 ext2fs_set_new_range_callback(ctx->fs, e2fsck_new_range, NULL);
4350 ext2fs_set_block_alloc_stats_range_callback(ctx->fs,
4351 e2fsck_block_alloc_stats_range, NULL);
4352 }
Unnamed repository; edit this file 'description' to name the repository.