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e2fsck: turn inline data symlink into a fast symlink when possible
[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 *
30 * Pass 1 is designed to stash away enough information so that the
31 * other passes should not need to read in the inode information
32 * during the normal course of a filesystem check. (Althogh if an
33 * inconsistency is detected, other passes may need to read in an
34 * inode to fix it.)
35 *
36 * Note that pass 1B will be invoked if there are any duplicate blocks
37 * found.
38 */
39
40 #define _GNU_SOURCE 1 /* get strnlen() */
41 #include "config.h"
42 #include <string.h>
43 #include <time.h>
44 #ifdef HAVE_ERRNO_H
45 #include <errno.h>
46 #endif
47
48 #include "e2fsck.h"
49 #include <ext2fs/ext2_ext_attr.h>
50
51 #include "problem.h"
52
53 #ifdef NO_INLINE_FUNCS
54 #define _INLINE_
55 #else
56 #define _INLINE_ inline
57 #endif
58
59 static int process_block(ext2_filsys fs, blk64_t *blocknr,
60 e2_blkcnt_t blockcnt, blk64_t ref_blk,
61 int ref_offset, void *priv_data);
62 static int process_bad_block(ext2_filsys fs, blk64_t *block_nr,
63 e2_blkcnt_t blockcnt, blk64_t ref_blk,
64 int ref_offset, void *priv_data);
65 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
66 char *block_buf);
67 static void mark_table_blocks(e2fsck_t ctx);
68 static void alloc_bb_map(e2fsck_t ctx);
69 static void alloc_imagic_map(e2fsck_t ctx);
70 static void mark_inode_bad(e2fsck_t ctx, ino_t ino);
71 static void add_encrypted_dir(e2fsck_t ctx, ino_t ino);
72 static void handle_fs_bad_blocks(e2fsck_t ctx);
73 static void process_inodes(e2fsck_t ctx, char *block_buf);
74 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b);
75 static errcode_t scan_callback(ext2_filsys fs, ext2_inode_scan scan,
76 dgrp_t group, void * priv_data);
77 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
78 char *block_buf, int adjust_sign);
79 /* static char *describe_illegal_block(ext2_filsys fs, blk64_t block); */
80
81 struct process_block_struct {
82 ext2_ino_t ino;
83 unsigned is_dir:1, is_reg:1, clear:1, suppress:1,
84 fragmented:1, compressed:1, bbcheck:1,
85 inode_modified:1;
86 blk64_t num_blocks;
87 blk64_t max_blocks;
88 e2_blkcnt_t last_block;
89 e2_blkcnt_t last_init_lblock;
90 e2_blkcnt_t last_db_block;
91 int num_illegal_blocks;
92 blk64_t previous_block;
93 struct ext2_inode *inode;
94 struct problem_context *pctx;
95 ext2fs_block_bitmap fs_meta_blocks;
96 e2fsck_t ctx;
97 region_t region;
98 };
99
100 struct process_inode_block {
101 ext2_ino_t ino;
102 struct ext2_inode inode;
103 };
104
105 struct scan_callback_struct {
106 e2fsck_t ctx;
107 char *block_buf;
108 };
109
110 /*
111 * For the inodes to process list.
112 */
113 static struct process_inode_block *inodes_to_process;
114 static int process_inode_count;
115
116 static __u64 ext2_max_sizes[EXT2_MAX_BLOCK_LOG_SIZE -
117 EXT2_MIN_BLOCK_LOG_SIZE + 1];
118
119 /*
120 * Free all memory allocated by pass1 in preparation for restarting
121 * things.
122 */
123 static void unwind_pass1(ext2_filsys fs EXT2FS_ATTR((unused)))
124 {
125 ext2fs_free_mem(&inodes_to_process);
126 inodes_to_process = 0;
127 }
128
129 /*
130 * Check to make sure a device inode is real. Returns 1 if the device
131 * checks out, 0 if not.
132 *
133 * Note: this routine is now also used to check FIFO's and Sockets,
134 * since they have the same requirement; the i_block fields should be
135 * zero.
136 */
137 int e2fsck_pass1_check_device_inode(ext2_filsys fs EXT2FS_ATTR((unused)),
138 struct ext2_inode *inode)
139 {
140 int i;
141
142 /*
143 * If the index flag is set, then this is a bogus
144 * device/fifo/socket
145 */
146 if (inode->i_flags & EXT2_INDEX_FL)
147 return 0;
148
149 /*
150 * We should be able to do the test below all the time, but
151 * because the kernel doesn't forcibly clear the device
152 * inode's additional i_block fields, there are some rare
153 * occasions when a legitimate device inode will have non-zero
154 * additional i_block fields. So for now, we only complain
155 * when the immutable flag is set, which should never happen
156 * for devices. (And that's when the problem is caused, since
157 * you can't set or clear immutable flags for devices.) Once
158 * the kernel has been fixed we can change this...
159 */
160 if (inode->i_flags & (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)) {
161 for (i=4; i < EXT2_N_BLOCKS; i++)
162 if (inode->i_block[i])
163 return 0;
164 }
165 return 1;
166 }
167
168 /*
169 * Check to make sure a symlink inode is real. Returns 1 if the symlink
170 * checks out, 0 if not.
171 */
172 int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino,
173 struct ext2_inode *inode, char *buf)
174 {
175 unsigned int len;
176 int i;
177 blk64_t blocks;
178 ext2_extent_handle_t handle;
179 struct ext2_extent_info info;
180 struct ext2fs_extent extent;
181 int encrypted = 0;
182
183 if ((inode->i_size_high || inode->i_size == 0) ||
184 (inode->i_flags & EXT2_INDEX_FL))
185 return 0;
186
187 if (inode->i_flags & EXT4_EXTENTS_FL) {
188 if (inode->i_flags & EXT4_INLINE_DATA_FL)
189 return 0;
190 if (inode->i_size > fs->blocksize)
191 return 0;
192 if (ext2fs_extent_open2(fs, ino, inode, &handle))
193 return 0;
194 i = 0;
195 if (ext2fs_extent_get_info(handle, &info) ||
196 (info.num_entries != 1) ||
197 (info.max_depth != 0))
198 goto exit_extent;
199 if (ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent) ||
200 (extent.e_lblk != 0) ||
201 (extent.e_len != 1) ||
202 (extent.e_pblk < fs->super->s_first_data_block) ||
203 (extent.e_pblk >= ext2fs_blocks_count(fs->super)))
204 goto exit_extent;
205 i = 1;
206 exit_extent:
207 ext2fs_extent_free(handle);
208 return i;
209 }
210
211 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
212 size_t inline_size;
213
214 if (ext2fs_inline_data_size(fs, ino, &inline_size))
215 return 0;
216 if (inode->i_size != inline_size)
217 return 0;
218
219 return 1;
220 }
221
222 blocks = ext2fs_inode_data_blocks2(fs, inode);
223 if (blocks) {
224 if (inode->i_flags & EXT4_INLINE_DATA_FL)
225 return 0;
226 if ((inode->i_size >= fs->blocksize) ||
227 (blocks != fs->blocksize >> 9) ||
228 (inode->i_block[0] < fs->super->s_first_data_block) ||
229 (inode->i_block[0] >= ext2fs_blocks_count(fs->super)))
230 return 0;
231
232 for (i = 1; i < EXT2_N_BLOCKS; i++)
233 if (inode->i_block[i])
234 return 0;
235
236 if (io_channel_read_blk64(fs->io, inode->i_block[0], 1, buf))
237 return 0;
238
239 if (inode->i_flags & EXT4_ENCRYPT_FL) {
240 len = ext2fs_le32_to_cpu(*((__u32 *)buf)) + 4;
241 } else {
242 len = strnlen(buf, fs->blocksize);
243 }
244 if (len == fs->blocksize)
245 return 0;
246 } else if (inode->i_flags & EXT4_INLINE_DATA_FL) {
247 char *inline_buf = NULL;
248 size_t inline_sz = 0;
249
250 if (ext2fs_inline_data_size(fs, ino, &inline_sz))
251 return 0;
252 if (inode->i_size != inline_sz)
253 return 0;
254 if (ext2fs_get_mem(inline_sz + 1, &inline_buf))
255 return 0;
256 i = 0;
257 if (ext2fs_inline_data_get(fs, ino, inode, inline_buf, NULL))
258 goto exit_inline;
259 inline_buf[inline_sz] = 0;
260 len = strnlen(inline_buf, inline_sz);
261 if (len != inline_sz)
262 goto exit_inline;
263 i = 1;
264 exit_inline:
265 ext2fs_free_mem(&inline_buf);
266 return i;
267 } else {
268 if (inode->i_size >= sizeof(inode->i_block))
269 return 0;
270
271 len = strnlen((char *)inode->i_block, sizeof(inode->i_block));
272 if (len == sizeof(inode->i_block))
273 return 0;
274 }
275 if (len != inode->i_size)
276 if ((inode->i_flags & EXT4_ENCRYPT_FL) == 0)
277 return 0;
278 return 1;
279 }
280
281 /*
282 * If the extents or inlinedata flags are set on the inode, offer to clear 'em.
283 */
284 #define BAD_SPECIAL_FLAGS (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)
285 static void check_extents_inlinedata(e2fsck_t ctx,
286 struct problem_context *pctx)
287 {
288 if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
289 return;
290
291 if (!fix_problem(ctx, PR_1_SPECIAL_EXTENTS_IDATA, pctx))
292 return;
293
294 pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
295 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
296 }
297 #undef BAD_SPECIAL_FLAGS
298
299 /*
300 * If the immutable (or append-only) flag is set on the inode, offer
301 * to clear it.
302 */
303 #define BAD_SPECIAL_FLAGS (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)
304 static void check_immutable(e2fsck_t ctx, struct problem_context *pctx)
305 {
306 if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
307 return;
308
309 if (!fix_problem(ctx, PR_1_SET_IMMUTABLE, pctx))
310 return;
311
312 pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
313 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
314 }
315
316 /*
317 * If device, fifo or socket, check size is zero -- if not offer to
318 * clear it
319 */
320 static void check_size(e2fsck_t ctx, struct problem_context *pctx)
321 {
322 struct ext2_inode *inode = pctx->inode;
323
324 if (EXT2_I_SIZE(inode) == 0)
325 return;
326
327 if (!fix_problem(ctx, PR_1_SET_NONZSIZE, pctx))
328 return;
329
330 ext2fs_inode_size_set(ctx->fs, inode, 0);
331 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
332 }
333
334 static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx)
335 {
336 struct ext2_super_block *sb = ctx->fs->super;
337 struct ext2_inode_large *inode;
338 struct ext2_ext_attr_entry *entry;
339 char *start, *header;
340 unsigned int storage_size, remain;
341 problem_t problem = 0;
342 region_t region = 0;
343
344 inode = (struct ext2_inode_large *) pctx->inode;
345 storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE -
346 inode->i_extra_isize;
347 header = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
348 inode->i_extra_isize;
349 start = header + sizeof(__u32);
350 entry = (struct ext2_ext_attr_entry *) start;
351
352 /* scan all entry's headers first */
353
354 /* take finish entry 0UL into account */
355 remain = storage_size - sizeof(__u32);
356
357 region = region_create(0, storage_size);
358 if (!region) {
359 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
360 problem = 0;
361 ctx->flags |= E2F_FLAG_ABORT;
362 return;
363 }
364 if (region_allocate(region, 0, sizeof(__u32))) {
365 problem = PR_1_INODE_EA_ALLOC_COLLISION;
366 goto fix;
367 }
368
369 while (remain >= sizeof(struct ext2_ext_attr_entry) &&
370 !EXT2_EXT_IS_LAST_ENTRY(entry)) {
371 __u32 hash;
372
373 if (region_allocate(region, (char *)entry - (char *)header,
374 EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
375 problem = PR_1_INODE_EA_ALLOC_COLLISION;
376 goto fix;
377 }
378
379 /* header eats this space */
380 remain -= sizeof(struct ext2_ext_attr_entry);
381
382 /* is attribute name valid? */
383 if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) {
384 pctx->num = entry->e_name_len;
385 problem = PR_1_ATTR_NAME_LEN;
386 goto fix;
387 }
388
389 /* attribute len eats this space */
390 remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
391
392 /* check value size */
393 if (entry->e_value_size > remain) {
394 pctx->num = entry->e_value_size;
395 problem = PR_1_ATTR_VALUE_SIZE;
396 goto fix;
397 }
398
399 /* e_value_block must be 0 in inode's ea */
400 if (entry->e_value_block != 0) {
401 pctx->num = entry->e_value_block;
402 problem = PR_1_ATTR_VALUE_BLOCK;
403 goto fix;
404 }
405
406 if (entry->e_value_size &&
407 region_allocate(region, sizeof(__u32) + entry->e_value_offs,
408 EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
409 problem = PR_1_INODE_EA_ALLOC_COLLISION;
410 goto fix;
411 }
412
413 hash = ext2fs_ext_attr_hash_entry(entry,
414 start + entry->e_value_offs);
415
416 /* e_hash may be 0 in older inode's ea */
417 if (entry->e_hash != 0 && entry->e_hash != hash) {
418 pctx->num = entry->e_hash;
419 problem = PR_1_ATTR_HASH;
420 goto fix;
421 }
422
423 remain -= entry->e_value_size;
424
425 entry = EXT2_EXT_ATTR_NEXT(entry);
426 }
427
428 if (region_allocate(region, (char *)entry - (char *)header,
429 sizeof(__u32))) {
430 problem = PR_1_INODE_EA_ALLOC_COLLISION;
431 goto fix;
432 }
433 fix:
434 if (region)
435 region_free(region);
436 /*
437 * it seems like a corruption. it's very unlikely we could repair
438 * EA(s) in automatic fashion -bzzz
439 */
440 if (problem == 0 || !fix_problem(ctx, problem, pctx))
441 return;
442
443 /* simply remove all possible EA(s) */
444 *((__u32 *)header) = 0UL;
445 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
446 EXT2_INODE_SIZE(sb), "pass1");
447 }
448
449 static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx)
450 {
451 struct ext2_super_block *sb = ctx->fs->super;
452 struct ext2_inode_large *inode;
453 __u32 *eamagic;
454 int min, max;
455
456 inode = (struct ext2_inode_large *) pctx->inode;
457 if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) {
458 /* this isn't large inode. so, nothing to check */
459 return;
460 }
461
462 #if 0
463 printf("inode #%u, i_extra_size %d\n", pctx->ino,
464 inode->i_extra_isize);
465 #endif
466 /* i_extra_isize must cover i_extra_isize + i_checksum_hi at least */
467 min = sizeof(inode->i_extra_isize) + sizeof(inode->i_checksum_hi);
468 max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE;
469 /*
470 * For now we will allow i_extra_isize to be 0, but really
471 * implementations should never allow i_extra_isize to be 0
472 */
473 if (inode->i_extra_isize &&
474 (inode->i_extra_isize < min || inode->i_extra_isize > max)) {
475 if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
476 return;
477 inode->i_extra_isize = min;
478 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
479 EXT2_INODE_SIZE(sb), "pass1");
480 return;
481 }
482
483 eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
484 inode->i_extra_isize);
485 if (*eamagic == EXT2_EXT_ATTR_MAGIC) {
486 /* it seems inode has an extended attribute(s) in body */
487 check_ea_in_inode(ctx, pctx);
488 }
489 }
490
491 /*
492 * Check to see if the inode might really be a directory, despite i_mode
493 *
494 * This is a lot of complexity for something for which I'm not really
495 * convinced happens frequently in the wild. If for any reason this
496 * causes any problems, take this code out.
497 * [tytso:20070331.0827EDT]
498 */
499 static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
500 char *buf)
501 {
502 struct ext2_inode *inode = pctx->inode;
503 struct ext2_dir_entry *dirent;
504 errcode_t retval;
505 blk64_t blk;
506 unsigned int i, rec_len, not_device = 0;
507 int extent_fs;
508 int inlinedata_fs;
509
510 /*
511 * If the mode looks OK, we believe it. If the first block in
512 * the i_block array is 0, this cannot be a directory. If the
513 * inode is extent-mapped, it is still the case that the latter
514 * cannot be 0 - the magic number in the extent header would make
515 * it nonzero.
516 */
517 if (LINUX_S_ISDIR(inode->i_mode) || LINUX_S_ISREG(inode->i_mode) ||
518 LINUX_S_ISLNK(inode->i_mode) || inode->i_block[0] == 0)
519 return;
520
521 /*
522 * Check the block numbers in the i_block array for validity:
523 * zero blocks are skipped (but the first one cannot be zero -
524 * see above), other blocks are checked against the first and
525 * max data blocks (from the the superblock) and against the
526 * block bitmap. Any invalid block found means this cannot be
527 * a directory.
528 *
529 * If there are non-zero blocks past the fourth entry, then
530 * this cannot be a device file: we remember that for the next
531 * check.
532 *
533 * For extent mapped files, we don't do any sanity checking:
534 * just try to get the phys block of logical block 0 and run
535 * with it.
536 *
537 * For inline data files, we just try to get the size of inline
538 * data. If it's true, we will treat it as a directory.
539 */
540
541 extent_fs = (ctx->fs->super->s_feature_incompat &
542 EXT3_FEATURE_INCOMPAT_EXTENTS);
543 inlinedata_fs = (ctx->fs->super->s_feature_incompat &
544 EXT4_FEATURE_INCOMPAT_INLINE_DATA);
545 if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL)) {
546 size_t size;
547 __u32 dotdot;
548 unsigned int rec_len;
549 struct ext2_dir_entry de;
550
551 if (ext2fs_inline_data_size(ctx->fs, pctx->ino, &size))
552 return;
553 /*
554 * If the size isn't a multiple of 4, it's probably not a
555 * directory??
556 */
557 if (size & 3)
558 return;
559 /*
560 * If the first 10 bytes don't look like a directory entry,
561 * it's probably not a directory.
562 */
563 memcpy(&dotdot, inode->i_block, sizeof(dotdot));
564 memcpy(&de, ((char *)inode->i_block) + EXT4_INLINE_DATA_DOTDOT_SIZE,
565 EXT2_DIR_REC_LEN(0));
566 dotdot = ext2fs_le32_to_cpu(dotdot);
567 de.inode = ext2fs_le32_to_cpu(de.inode);
568 de.rec_len = ext2fs_le16_to_cpu(de.rec_len);
569 ext2fs_get_rec_len(ctx->fs, &de, &rec_len);
570 if (dotdot >= ctx->fs->super->s_inodes_count ||
571 (dotdot < EXT2_FIRST_INO(ctx->fs->super) &&
572 dotdot != EXT2_ROOT_INO) ||
573 de.inode >= ctx->fs->super->s_inodes_count ||
574 (de.inode < EXT2_FIRST_INO(ctx->fs->super) &&
575 de.inode != 0) ||
576 rec_len > EXT4_MIN_INLINE_DATA_SIZE -
577 EXT4_INLINE_DATA_DOTDOT_SIZE)
578 return;
579 /* device files never have a "system.data" entry */
580 goto isdir;
581 } else if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) {
582 /* extent mapped */
583 if (ext2fs_bmap2(ctx->fs, pctx->ino, inode, 0, 0, 0, 0,
584 &blk))
585 return;
586 /* device files are never extent mapped */
587 not_device++;
588 } else {
589 for (i=0; i < EXT2_N_BLOCKS; i++) {
590 blk = inode->i_block[i];
591 if (!blk)
592 continue;
593 if (i >= 4)
594 not_device++;
595
596 if (blk < ctx->fs->super->s_first_data_block ||
597 blk >= ext2fs_blocks_count(ctx->fs->super) ||
598 ext2fs_fast_test_block_bitmap2(ctx->block_found_map,
599 blk))
600 return; /* Invalid block, can't be dir */
601 }
602 blk = inode->i_block[0];
603 }
604
605 /*
606 * If the mode says this is a device file and the i_links_count field
607 * is sane and we have not ruled it out as a device file previously,
608 * we declare it a device file, not a directory.
609 */
610 if ((LINUX_S_ISCHR(inode->i_mode) || LINUX_S_ISBLK(inode->i_mode)) &&
611 (inode->i_links_count == 1) && !not_device)
612 return;
613
614 /* read the first block */
615 ehandler_operation(_("reading directory block"));
616 retval = ext2fs_read_dir_block4(ctx->fs, blk, buf, 0, pctx->ino);
617 ehandler_operation(0);
618 if (retval)
619 return;
620
621 dirent = (struct ext2_dir_entry *) buf;
622 retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
623 if (retval)
624 return;
625 if ((ext2fs_dirent_name_len(dirent) != 1) ||
626 (dirent->name[0] != '.') ||
627 (dirent->inode != pctx->ino) ||
628 (rec_len < 12) ||
629 (rec_len % 4) ||
630 (rec_len >= ctx->fs->blocksize - 12))
631 return;
632
633 dirent = (struct ext2_dir_entry *) (buf + rec_len);
634 retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
635 if (retval)
636 return;
637 if ((ext2fs_dirent_name_len(dirent) != 2) ||
638 (dirent->name[0] != '.') ||
639 (dirent->name[1] != '.') ||
640 (rec_len < 12) ||
641 (rec_len % 4))
642 return;
643
644 isdir:
645 if (fix_problem(ctx, PR_1_TREAT_AS_DIRECTORY, pctx)) {
646 inode->i_mode = (inode->i_mode & 07777) | LINUX_S_IFDIR;
647 e2fsck_write_inode_full(ctx, pctx->ino, inode,
648 EXT2_INODE_SIZE(ctx->fs->super),
649 "check_is_really_dir");
650 }
651 }
652
653 void e2fsck_setup_tdb_icount(e2fsck_t ctx, int flags,
654 ext2_icount_t *ret)
655 {
656 unsigned int threshold;
657 ext2_ino_t num_dirs;
658 errcode_t retval;
659 char *tdb_dir;
660 int enable;
661
662 *ret = 0;
663
664 profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
665 &tdb_dir);
666 profile_get_uint(ctx->profile, "scratch_files",
667 "numdirs_threshold", 0, 0, &threshold);
668 profile_get_boolean(ctx->profile, "scratch_files",
669 "icount", 0, 1, &enable);
670
671 retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
672 if (retval)
673 num_dirs = 1024; /* Guess */
674
675 if (!enable || !tdb_dir || access(tdb_dir, W_OK) ||
676 (threshold && num_dirs <= threshold))
677 return;
678
679 retval = ext2fs_create_icount_tdb(ctx->fs, tdb_dir, flags, ret);
680 if (retval)
681 *ret = 0;
682 }
683
684 static errcode_t recheck_bad_inode_checksum(ext2_filsys fs, ext2_ino_t ino,
685 e2fsck_t ctx,
686 struct problem_context *pctx)
687 {
688 errcode_t retval;
689 struct ext2_inode_large inode;
690
691 /*
692 * Reread inode. If we don't see checksum error, then this inode
693 * has been fixed elsewhere.
694 */
695 ctx->stashed_ino = 0;
696 retval = ext2fs_read_inode_full(fs, ino, (struct ext2_inode *)&inode,
697 sizeof(inode));
698 if (retval && retval != EXT2_ET_INODE_CSUM_INVALID)
699 return retval;
700 if (!retval)
701 return 0;
702
703 /*
704 * Checksum still doesn't match. That implies that the inode passes
705 * all the sanity checks, so maybe the checksum is simply corrupt.
706 * See if the user will go for fixing that.
707 */
708 if (!fix_problem(ctx, PR_1_INODE_ONLY_CSUM_INVALID, pctx))
709 return 0;
710
711 retval = ext2fs_write_inode_full(fs, ino, (struct ext2_inode *)&inode,
712 sizeof(inode));
713 return retval;
714 }
715
716 static void reserve_block_for_root_repair(e2fsck_t ctx)
717 {
718 blk64_t blk = 0;
719 errcode_t err;
720 ext2_filsys fs = ctx->fs;
721
722 ctx->root_repair_block = 0;
723 if (ext2fs_test_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO))
724 return;
725
726 err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
727 if (err)
728 return;
729 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
730 ctx->root_repair_block = blk;
731 }
732
733 static void reserve_block_for_lnf_repair(e2fsck_t ctx)
734 {
735 blk64_t blk = 0;
736 errcode_t err;
737 ext2_filsys fs = ctx->fs;
738 static const char name[] = "lost+found";
739 ext2_ino_t ino;
740
741 ctx->lnf_repair_block = 0;
742 if (!ext2fs_lookup(fs, EXT2_ROOT_INO, name, sizeof(name)-1, 0, &ino))
743 return;
744
745 err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
746 if (err)
747 return;
748 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
749 ctx->lnf_repair_block = blk;
750 }
751
752 static errcode_t get_inline_data_ea_size(ext2_filsys fs, ext2_ino_t ino,
753 size_t *sz)
754 {
755 void *p;
756 struct ext2_xattr_handle *handle;
757 errcode_t retval;
758
759 retval = ext2fs_xattrs_open(fs, ino, &handle);
760 if (retval)
761 return retval;
762
763 retval = ext2fs_xattrs_read(handle);
764 if (retval)
765 goto err;
766
767 retval = ext2fs_xattr_get(handle, "system.data", &p, sz);
768 if (retval)
769 goto err;
770 ext2fs_free_mem(&p);
771 err:
772 (void) ext2fs_xattrs_close(&handle);
773 return retval;
774 }
775
776 static void finish_processing_inode(e2fsck_t ctx, ext2_ino_t ino,
777 struct problem_context *pctx,
778 int failed_csum)
779 {
780 if (!failed_csum)
781 return;
782
783 /*
784 * If the inode failed the checksum and the user didn't
785 * clear the inode, test the checksum again -- if it still
786 * fails, ask the user if the checksum should be corrected.
787 */
788 pctx->errcode = recheck_bad_inode_checksum(ctx->fs, ino, ctx, pctx);
789 if (pctx->errcode)
790 ctx->flags |= E2F_FLAG_ABORT;
791 }
792 #define FINISH_INODE_LOOP(ctx, ino, pctx, failed_csum) \
793 do { \
794 finish_processing_inode((ctx), (ino), (pctx), (failed_csum)); \
795 if ((ctx)->flags & E2F_FLAG_ABORT) \
796 return; \
797 } while (0)
798
799 static int could_be_block_map(ext2_filsys fs, struct ext2_inode *inode)
800 {
801 __u32 x;
802 int i;
803
804 for (i = 0; i < EXT2_N_BLOCKS; i++) {
805 x = inode->i_block[i];
806 #ifdef WORDS_BIGENDIAN
807 x = ext2fs_swab32(x);
808 #endif
809 if (x >= ext2fs_blocks_count(fs->super))
810 return 0;
811 }
812
813 return 1;
814 }
815
816 /*
817 * Figure out what to do with an inode that has both extents and inline data
818 * inode flags set. Returns -1 if we decide to erase the inode, 0 otherwise.
819 */
820 static int fix_inline_data_extents_file(e2fsck_t ctx,
821 ext2_ino_t ino,
822 struct ext2_inode *inode,
823 int inode_size,
824 struct problem_context *pctx)
825 {
826 size_t max_inline_ea_size;
827 ext2_filsys fs = ctx->fs;
828 int dirty = 0;
829
830 /* Both feature flags not set? Just run the regular checks */
831 if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super,
832 EXT3_FEATURE_INCOMPAT_EXTENTS) &&
833 !EXT2_HAS_INCOMPAT_FEATURE(fs->super,
834 EXT4_FEATURE_INCOMPAT_INLINE_DATA))
835 return 0;
836
837 /* Clear both flags if it's a special file */
838 if (LINUX_S_ISCHR(inode->i_mode) ||
839 LINUX_S_ISBLK(inode->i_mode) ||
840 LINUX_S_ISFIFO(inode->i_mode) ||
841 LINUX_S_ISSOCK(inode->i_mode)) {
842 check_extents_inlinedata(ctx, pctx);
843 return 0;
844 }
845
846 /* If it looks like an extent tree, try to clear inlinedata */
847 if (ext2fs_extent_header_verify(inode->i_block,
848 sizeof(inode->i_block)) == 0 &&
849 fix_problem(ctx, PR_1_CLEAR_INLINE_DATA_FOR_EXTENT, pctx)) {
850 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
851 dirty = 1;
852 goto out;
853 }
854
855 /* If it looks short enough to be inline data, try to clear extents */
856 if (EXT2_INODE_SIZE(fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
857 max_inline_ea_size = EXT2_INODE_SIZE(fs->super) -
858 (EXT2_GOOD_OLD_INODE_SIZE +
859 ((struct ext2_inode_large *)inode)->i_extra_isize);
860 else
861 max_inline_ea_size = 0;
862 if (EXT2_I_SIZE(inode) <
863 EXT4_MIN_INLINE_DATA_SIZE + max_inline_ea_size &&
864 fix_problem(ctx, PR_1_CLEAR_EXTENT_FOR_INLINE_DATA, pctx)) {
865 inode->i_flags &= ~EXT4_EXTENTS_FL;
866 dirty = 1;
867 goto out;
868 }
869
870 /*
871 * Too big for inline data, but no evidence of extent tree -
872 * maybe it's a block map file? If the mappings all look valid?
873 */
874 if (could_be_block_map(fs, inode) &&
875 fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_FLAGS, pctx)) {
876 #ifdef WORDS_BIGENDIAN
877 int i;
878
879 for (i = 0; i < EXT2_N_BLOCKS; i++)
880 inode->i_block[i] = ext2fs_swab32(inode->i_block[i]);
881 #endif
882
883 inode->i_flags &= ~(EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL);
884 dirty = 1;
885 goto out;
886 }
887
888 /* Oh well, just clear the busted inode. */
889 if (fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_INODE, pctx)) {
890 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
891 return -1;
892 }
893
894 out:
895 if (dirty)
896 e2fsck_write_inode(ctx, ino, inode, "pass1");
897
898 return 0;
899 }
900
901 void e2fsck_pass1(e2fsck_t ctx)
902 {
903 int i;
904 __u64 max_sizes;
905 ext2_filsys fs = ctx->fs;
906 ext2_ino_t ino = 0;
907 struct ext2_inode *inode = NULL;
908 ext2_inode_scan scan = NULL;
909 char *block_buf = NULL;
910 #ifdef RESOURCE_TRACK
911 struct resource_track rtrack;
912 #endif
913 unsigned char frag, fsize;
914 struct problem_context pctx;
915 struct scan_callback_struct scan_struct;
916 struct ext2_super_block *sb = ctx->fs->super;
917 const char *old_op;
918 unsigned int save_type;
919 int imagic_fs, extent_fs, inlinedata_fs;
920 int low_dtime_check = 1;
921 int inode_size;
922 int failed_csum = 0;
923
924 init_resource_track(&rtrack, ctx->fs->io);
925 clear_problem_context(&pctx);
926
927 if (!(ctx->options & E2F_OPT_PREEN))
928 fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
929
930 if ((fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) &&
931 !(ctx->options & E2F_OPT_NO)) {
932 if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
933 ctx->dirs_to_hash = 0;
934 }
935
936 #ifdef MTRACE
937 mtrace_print("Pass 1");
938 #endif
939
940 #define EXT2_BPP(bits) (1ULL << ((bits) - 2))
941
942 for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
943 max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
944 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
945 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
946 max_sizes = (max_sizes * (1UL << i));
947 ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
948 }
949 #undef EXT2_BPP
950
951 imagic_fs = (sb->s_feature_compat & EXT2_FEATURE_COMPAT_IMAGIC_INODES);
952 extent_fs = (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS);
953 inlinedata_fs = (sb->s_feature_incompat &
954 EXT4_FEATURE_INCOMPAT_INLINE_DATA);
955
956 /*
957 * Allocate bitmaps structures
958 */
959 pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("in-use inode map"),
960 EXT2FS_BMAP64_RBTREE,
961 "inode_used_map",
962 &ctx->inode_used_map);
963 if (pctx.errcode) {
964 pctx.num = 1;
965 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
966 ctx->flags |= E2F_FLAG_ABORT;
967 return;
968 }
969 pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
970 _("directory inode map"),
971 EXT2FS_BMAP64_AUTODIR,
972 "inode_dir_map", &ctx->inode_dir_map);
973 if (pctx.errcode) {
974 pctx.num = 2;
975 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
976 ctx->flags |= E2F_FLAG_ABORT;
977 return;
978 }
979 pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
980 _("regular file inode map"), EXT2FS_BMAP64_RBTREE,
981 "inode_reg_map", &ctx->inode_reg_map);
982 if (pctx.errcode) {
983 pctx.num = 6;
984 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
985 ctx->flags |= E2F_FLAG_ABORT;
986 return;
987 }
988 pctx.errcode = e2fsck_allocate_subcluster_bitmap(fs,
989 _("in-use block map"), EXT2FS_BMAP64_RBTREE,
990 "block_found_map", &ctx->block_found_map);
991 if (pctx.errcode) {
992 pctx.num = 1;
993 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
994 ctx->flags |= E2F_FLAG_ABORT;
995 return;
996 }
997 pctx.errcode = e2fsck_allocate_block_bitmap(fs,
998 _("metadata block map"), EXT2FS_BMAP64_RBTREE,
999 "block_metadata_map", &ctx->block_metadata_map);
1000 if (pctx.errcode) {
1001 pctx.num = 1;
1002 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1003 ctx->flags |= E2F_FLAG_ABORT;
1004 return;
1005 }
1006 e2fsck_setup_tdb_icount(ctx, 0, &ctx->inode_link_info);
1007 if (!ctx->inode_link_info) {
1008 e2fsck_set_bitmap_type(fs, EXT2FS_BMAP64_RBTREE,
1009 "inode_link_info", &save_type);
1010 pctx.errcode = ext2fs_create_icount2(fs, 0, 0, 0,
1011 &ctx->inode_link_info);
1012 fs->default_bitmap_type = save_type;
1013 }
1014
1015 if (pctx.errcode) {
1016 fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
1017 ctx->flags |= E2F_FLAG_ABORT;
1018 return;
1019 }
1020 inode_size = EXT2_INODE_SIZE(fs->super);
1021 inode = (struct ext2_inode *)
1022 e2fsck_allocate_memory(ctx, inode_size, "scratch inode");
1023
1024 inodes_to_process = (struct process_inode_block *)
1025 e2fsck_allocate_memory(ctx,
1026 (ctx->process_inode_size *
1027 sizeof(struct process_inode_block)),
1028 "array of inodes to process");
1029 process_inode_count = 0;
1030
1031 pctx.errcode = ext2fs_init_dblist(fs, 0);
1032 if (pctx.errcode) {
1033 fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
1034 ctx->flags |= E2F_FLAG_ABORT;
1035 goto endit;
1036 }
1037
1038 /*
1039 * If the last orphan field is set, clear it, since the pass1
1040 * processing will automatically find and clear the orphans.
1041 * In the future, we may want to try using the last_orphan
1042 * linked list ourselves, but for now, we clear it so that the
1043 * ext3 mount code won't get confused.
1044 */
1045 if (!(ctx->options & E2F_OPT_READONLY)) {
1046 if (fs->super->s_last_orphan) {
1047 fs->super->s_last_orphan = 0;
1048 ext2fs_mark_super_dirty(fs);
1049 }
1050 }
1051
1052 mark_table_blocks(ctx);
1053 pctx.errcode = ext2fs_convert_subcluster_bitmap(fs,
1054 &ctx->block_found_map);
1055 if (pctx.errcode) {
1056 fix_problem(ctx, PR_1_CONVERT_SUBCLUSTER, &pctx);
1057 ctx->flags |= E2F_FLAG_ABORT;
1058 goto endit;
1059 }
1060 block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
1061 "block interate buffer");
1062 if (EXT2_INODE_SIZE(fs->super) == EXT2_GOOD_OLD_INODE_SIZE)
1063 e2fsck_use_inode_shortcuts(ctx, 1);
1064 e2fsck_intercept_block_allocations(ctx);
1065 old_op = ehandler_operation(_("opening inode scan"));
1066 pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
1067 &scan);
1068 ehandler_operation(old_op);
1069 if (pctx.errcode) {
1070 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1071 ctx->flags |= E2F_FLAG_ABORT;
1072 goto endit;
1073 }
1074 ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE |
1075 EXT2_SF_WARN_GARBAGE_INODES, 0);
1076 ctx->stashed_inode = inode;
1077 scan_struct.ctx = ctx;
1078 scan_struct.block_buf = block_buf;
1079 ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
1080 if (ctx->progress && ((ctx->progress)(ctx, 1, 0,
1081 ctx->fs->group_desc_count)))
1082 goto endit;
1083 if ((fs->super->s_wtime < fs->super->s_inodes_count) ||
1084 (fs->super->s_mtime < fs->super->s_inodes_count) ||
1085 (fs->super->s_mkfs_time &&
1086 fs->super->s_mkfs_time < fs->super->s_inodes_count))
1087 low_dtime_check = 0;
1088
1089 if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) &&
1090 fs->super->s_mmp_block > fs->super->s_first_data_block &&
1091 fs->super->s_mmp_block < ext2fs_blocks_count(fs->super))
1092 ext2fs_mark_block_bitmap2(ctx->block_found_map,
1093 fs->super->s_mmp_block);
1094
1095 /* Set up ctx->lost_and_found if possible */
1096 (void) e2fsck_get_lost_and_found(ctx, 0);
1097
1098 while (1) {
1099 if (ino % (fs->super->s_inodes_per_group * 4) == 1) {
1100 if (e2fsck_mmp_update(fs))
1101 fatal_error(ctx, 0);
1102 }
1103 old_op = ehandler_operation(_("getting next inode from scan"));
1104 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
1105 inode, inode_size);
1106 ehandler_operation(old_op);
1107 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1108 return;
1109 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
1110 /*
1111 * If badblocks says badblocks is bad, offer to clear
1112 * the list, update the in-core bb list, and restart
1113 * the inode scan.
1114 */
1115 if (ino == EXT2_BAD_INO &&
1116 fix_problem(ctx, PR_1_BADBLOCKS_IN_BADBLOCKS,
1117 &pctx)) {
1118 errcode_t err;
1119
1120 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1121 ext2fs_badblocks_list_free(ctx->fs->badblocks);
1122 ctx->fs->badblocks = NULL;
1123 err = ext2fs_read_bb_inode(ctx->fs,
1124 &ctx->fs->badblocks);
1125 if (err) {
1126 fix_problem(ctx, PR_1_ISCAN_ERROR,
1127 &pctx);
1128 ctx->flags |= E2F_FLAG_ABORT;
1129 goto endit;
1130 }
1131 err = ext2fs_inode_scan_goto_blockgroup(scan,
1132 0);
1133 if (err) {
1134 fix_problem(ctx, PR_1_ISCAN_ERROR,
1135 &pctx);
1136 ctx->flags |= E2F_FLAG_ABORT;
1137 goto endit;
1138 }
1139 continue;
1140 }
1141 if (!ctx->inode_bb_map)
1142 alloc_bb_map(ctx);
1143 ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino);
1144 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1145 continue;
1146 }
1147 if (pctx.errcode &&
1148 pctx.errcode != EXT2_ET_INODE_CSUM_INVALID &&
1149 pctx.errcode != EXT2_ET_INODE_IS_GARBAGE) {
1150 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1151 ctx->flags |= E2F_FLAG_ABORT;
1152 goto endit;
1153 }
1154 if (!ino)
1155 break;
1156 pctx.ino = ino;
1157 pctx.inode = inode;
1158 ctx->stashed_ino = ino;
1159
1160 /* Clear trashed inode? */
1161 if (pctx.errcode == EXT2_ET_INODE_IS_GARBAGE &&
1162 inode->i_links_count > 0 &&
1163 fix_problem(ctx, PR_1_INODE_IS_GARBAGE, &pctx)) {
1164 pctx.errcode = 0;
1165 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1166 }
1167 failed_csum = pctx.errcode != 0;
1168
1169 if (inode->i_links_count) {
1170 pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
1171 ino, inode->i_links_count);
1172 if (pctx.errcode) {
1173 pctx.num = inode->i_links_count;
1174 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
1175 ctx->flags |= E2F_FLAG_ABORT;
1176 goto endit;
1177 }
1178 }
1179
1180 /* Conflicting inlinedata/extents inode flags? */
1181 if ((inode->i_flags & EXT4_INLINE_DATA_FL) &&
1182 (inode->i_flags & EXT4_EXTENTS_FL)) {
1183 int res = fix_inline_data_extents_file(ctx, ino, inode,
1184 inode_size,
1185 &pctx);
1186 if (res < 0) {
1187 /* skip FINISH_INODE_LOOP */
1188 continue;
1189 }
1190 }
1191
1192 /* Test for incorrect inline_data flags settings. */
1193 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && !inlinedata_fs &&
1194 (ino >= EXT2_FIRST_INODE(fs->super))) {
1195 size_t size = 0;
1196
1197 pctx.errcode = ext2fs_inline_data_size(fs, ino, &size);
1198 if (!pctx.errcode && size &&
1199 fix_problem(ctx, PR_1_INLINE_DATA_FEATURE, &pctx)) {
1200 sb->s_feature_incompat |=
1201 EXT4_FEATURE_INCOMPAT_INLINE_DATA;
1202 ext2fs_mark_super_dirty(fs);
1203 inlinedata_fs = 1;
1204 } else if (fix_problem(ctx, PR_1_INLINE_DATA_SET, &pctx)) {
1205 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1206 /* skip FINISH_INODE_LOOP */
1207 continue;
1208 }
1209 }
1210
1211 /* Test for inline data flag but no attr */
1212 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && inlinedata_fs &&
1213 EXT2_I_SIZE(inode) > EXT4_MIN_INLINE_DATA_SIZE &&
1214 (ino >= EXT2_FIRST_INODE(fs->super))) {
1215 size_t size = 0;
1216 errcode_t err;
1217 int flags;
1218
1219 flags = fs->flags;
1220 if (failed_csum)
1221 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
1222 err = get_inline_data_ea_size(fs, ino, &size);
1223 fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
1224 (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
1225
1226 switch (err) {
1227 case 0:
1228 /* Everything is awesome... */
1229 break;
1230 case EXT2_ET_BAD_EA_BLOCK_NUM:
1231 case EXT2_ET_BAD_EA_HASH:
1232 case EXT2_ET_BAD_EA_HEADER:
1233 case EXT2_ET_EA_BAD_NAME_LEN:
1234 case EXT2_ET_EA_BAD_VALUE_SIZE:
1235 case EXT2_ET_EA_KEY_NOT_FOUND:
1236 case EXT2_ET_EA_NO_SPACE:
1237 case EXT2_ET_MISSING_EA_FEATURE:
1238 case EXT2_ET_INLINE_DATA_CANT_ITERATE:
1239 case EXT2_ET_INLINE_DATA_NO_BLOCK:
1240 case EXT2_ET_INLINE_DATA_NO_SPACE:
1241 case EXT2_ET_NO_INLINE_DATA:
1242 case EXT2_ET_EXT_ATTR_CSUM_INVALID:
1243 case EXT2_ET_EA_BAD_VALUE_OFFSET:
1244 /* broken EA or no system.data EA; truncate */
1245 if (fix_problem(ctx, PR_1_INLINE_DATA_NO_ATTR,
1246 &pctx)) {
1247 err = ext2fs_inode_size_set(fs, inode,
1248 sizeof(inode->i_block));
1249 if (err) {
1250 pctx.errcode = err;
1251 ctx->flags |= E2F_FLAG_ABORT;
1252 goto endit;
1253 }
1254 if (LINUX_S_ISLNK(inode->i_mode))
1255 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1256 e2fsck_write_inode(ctx, ino, inode,
1257 "pass1");
1258 failed_csum = 0;
1259 }
1260 break;
1261 default:
1262 /* Some other kind of non-xattr error? */
1263 pctx.errcode = err;
1264 ctx->flags |= E2F_FLAG_ABORT;
1265 goto endit;
1266 }
1267 }
1268
1269 /*
1270 * Test for incorrect extent flag settings.
1271 *
1272 * On big-endian machines we must be careful:
1273 * When the inode is read, the i_block array is not swapped
1274 * if the extent flag is set. Therefore if we are testing
1275 * for or fixing a wrongly-set flag, we must potentially
1276 * (un)swap before testing, or after fixing.
1277 */
1278
1279 /*
1280 * In this case the extents flag was set when read, so
1281 * extent_header_verify is ok. If the inode is cleared,
1282 * no need to swap... so no extra swapping here.
1283 */
1284 if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs &&
1285 (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1286 (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) {
1287 if ((ext2fs_extent_header_verify(inode->i_block,
1288 sizeof(inode->i_block)) == 0) &&
1289 fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) {
1290 sb->s_feature_incompat |= EXT3_FEATURE_INCOMPAT_EXTENTS;
1291 ext2fs_mark_super_dirty(fs);
1292 extent_fs = 1;
1293 } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) {
1294 clear_inode:
1295 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1296 if (ino == EXT2_BAD_INO)
1297 ext2fs_mark_inode_bitmap2(ctx->inode_used_map,
1298 ino);
1299 /* skip FINISH_INODE_LOOP */
1300 continue;
1301 }
1302 }
1303
1304 /*
1305 * For big-endian machines:
1306 * If the inode didn't have the extents flag set when it
1307 * was read, then the i_blocks array was swapped. To test
1308 * as an extents header, we must swap it back first.
1309 * IF we then set the extents flag, the entire i_block
1310 * array must be un/re-swapped to make it proper extents data.
1311 */
1312 if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) &&
1313 (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1314 (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) &&
1315 (LINUX_S_ISREG(inode->i_mode) ||
1316 LINUX_S_ISDIR(inode->i_mode))) {
1317 void *ehp;
1318 #ifdef WORDS_BIGENDIAN
1319 __u32 tmp_block[EXT2_N_BLOCKS];
1320
1321 for (i = 0; i < EXT2_N_BLOCKS; i++)
1322 tmp_block[i] = ext2fs_swab32(inode->i_block[i]);
1323 ehp = tmp_block;
1324 #else
1325 ehp = inode->i_block;
1326 #endif
1327 if ((ext2fs_extent_header_verify(ehp,
1328 sizeof(inode->i_block)) == 0) &&
1329 (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) {
1330 inode->i_flags |= EXT4_EXTENTS_FL;
1331 #ifdef WORDS_BIGENDIAN
1332 memcpy(inode->i_block, tmp_block,
1333 sizeof(inode->i_block));
1334 #endif
1335 e2fsck_write_inode(ctx, ino, inode, "pass1");
1336 failed_csum = 0;
1337 }
1338 }
1339
1340 if (ino == EXT2_BAD_INO) {
1341 struct process_block_struct pb;
1342
1343 if ((failed_csum || inode->i_mode || inode->i_uid ||
1344 inode->i_gid || inode->i_links_count ||
1345 (inode->i_flags & EXT4_INLINE_DATA_FL) ||
1346 inode->i_file_acl) &&
1347 fix_problem(ctx, PR_1_INVALID_BAD_INODE, &pctx)) {
1348 memset(inode, 0, sizeof(struct ext2_inode));
1349 e2fsck_write_inode(ctx, ino, inode,
1350 "clear bad inode");
1351 failed_csum = 0;
1352 }
1353
1354 pctx.errcode = ext2fs_copy_bitmap(ctx->block_found_map,
1355 &pb.fs_meta_blocks);
1356 if (pctx.errcode) {
1357 pctx.num = 4;
1358 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1359 ctx->flags |= E2F_FLAG_ABORT;
1360 goto endit;
1361 }
1362 pb.ino = EXT2_BAD_INO;
1363 pb.num_blocks = pb.last_block = 0;
1364 pb.last_db_block = -1;
1365 pb.num_illegal_blocks = 0;
1366 pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
1367 pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
1368 pb.inode = inode;
1369 pb.pctx = &pctx;
1370 pb.ctx = ctx;
1371 pctx.errcode = ext2fs_block_iterate3(fs, ino, 0,
1372 block_buf, process_bad_block, &pb);
1373 ext2fs_free_block_bitmap(pb.fs_meta_blocks);
1374 if (pctx.errcode) {
1375 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
1376 ctx->flags |= E2F_FLAG_ABORT;
1377 goto endit;
1378 }
1379 if (pb.bbcheck)
1380 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
1381 ctx->flags |= E2F_FLAG_ABORT;
1382 goto endit;
1383 }
1384 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1385 clear_problem_context(&pctx);
1386 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1387 continue;
1388 } else if (ino == EXT2_ROOT_INO) {
1389 /*
1390 * Make sure the root inode is a directory; if
1391 * not, offer to clear it. It will be
1392 * regnerated in pass #3.
1393 */
1394 if (!LINUX_S_ISDIR(inode->i_mode)) {
1395 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx))
1396 goto clear_inode;
1397 }
1398 /*
1399 * If dtime is set, offer to clear it. mke2fs
1400 * version 0.2b created filesystems with the
1401 * dtime field set for the root and lost+found
1402 * directories. We won't worry about
1403 * /lost+found, since that can be regenerated
1404 * easily. But we will fix the root directory
1405 * as a special case.
1406 */
1407 if (inode->i_dtime && inode->i_links_count) {
1408 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
1409 inode->i_dtime = 0;
1410 e2fsck_write_inode(ctx, ino, inode,
1411 "pass1");
1412 failed_csum = 0;
1413 }
1414 }
1415 } else if (ino == EXT2_JOURNAL_INO) {
1416 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1417 if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
1418 if (!LINUX_S_ISREG(inode->i_mode) &&
1419 fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
1420 &pctx)) {
1421 inode->i_mode = LINUX_S_IFREG;
1422 e2fsck_write_inode(ctx, ino, inode,
1423 "pass1");
1424 failed_csum = 0;
1425 }
1426 check_blocks(ctx, &pctx, block_buf);
1427 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1428 continue;
1429 }
1430 if ((inode->i_links_count ||
1431 inode->i_blocks || inode->i_block[0]) &&
1432 fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
1433 &pctx)) {
1434 memset(inode, 0, inode_size);
1435 ext2fs_icount_store(ctx->inode_link_info,
1436 ino, 0);
1437 e2fsck_write_inode_full(ctx, ino, inode,
1438 inode_size, "pass1");
1439 failed_csum = 0;
1440 }
1441 } else if ((ino == EXT4_USR_QUOTA_INO) ||
1442 (ino == EXT4_GRP_QUOTA_INO)) {
1443 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1444 if ((fs->super->s_feature_ro_compat &
1445 EXT4_FEATURE_RO_COMPAT_QUOTA) &&
1446 ((fs->super->s_usr_quota_inum == ino) ||
1447 (fs->super->s_grp_quota_inum == ino))) {
1448 if (!LINUX_S_ISREG(inode->i_mode) &&
1449 fix_problem(ctx, PR_1_QUOTA_BAD_MODE,
1450 &pctx)) {
1451 inode->i_mode = LINUX_S_IFREG;
1452 e2fsck_write_inode(ctx, ino, inode,
1453 "pass1");
1454 failed_csum = 0;
1455 }
1456 check_blocks(ctx, &pctx, block_buf);
1457 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1458 continue;
1459 }
1460 if ((inode->i_links_count ||
1461 inode->i_blocks || inode->i_block[0]) &&
1462 fix_problem(ctx, PR_1_QUOTA_INODE_NOT_CLEAR,
1463 &pctx)) {
1464 memset(inode, 0, inode_size);
1465 ext2fs_icount_store(ctx->inode_link_info,
1466 ino, 0);
1467 e2fsck_write_inode_full(ctx, ino, inode,
1468 inode_size, "pass1");
1469 failed_csum = 0;
1470 }
1471 } else if (ino < EXT2_FIRST_INODE(fs->super)) {
1472 problem_t problem = 0;
1473
1474 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1475 if (ino == EXT2_BOOT_LOADER_INO) {
1476 if (LINUX_S_ISDIR(inode->i_mode))
1477 problem = PR_1_RESERVED_BAD_MODE;
1478 } else if (ino == EXT2_RESIZE_INO) {
1479 if (inode->i_mode &&
1480 !LINUX_S_ISREG(inode->i_mode))
1481 problem = PR_1_RESERVED_BAD_MODE;
1482 } else {
1483 if (inode->i_mode != 0)
1484 problem = PR_1_RESERVED_BAD_MODE;
1485 }
1486 if (problem) {
1487 if (fix_problem(ctx, problem, &pctx)) {
1488 inode->i_mode = 0;
1489 e2fsck_write_inode(ctx, ino, inode,
1490 "pass1");
1491 failed_csum = 0;
1492 }
1493 }
1494 check_blocks(ctx, &pctx, block_buf);
1495 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1496 continue;
1497 }
1498
1499 /*
1500 * Check for inodes who might have been part of the
1501 * orphaned list linked list. They should have gotten
1502 * dealt with by now, unless the list had somehow been
1503 * corrupted.
1504 *
1505 * FIXME: In the future, inodes which are still in use
1506 * (and which are therefore) pending truncation should
1507 * be handled specially. Right now we just clear the
1508 * dtime field, and the normal e2fsck handling of
1509 * inodes where i_size and the inode blocks are
1510 * inconsistent is to fix i_size, instead of releasing
1511 * the extra blocks. This won't catch the inodes that
1512 * was at the end of the orphan list, but it's better
1513 * than nothing. The right answer is that there
1514 * shouldn't be any bugs in the orphan list handling. :-)
1515 */
1516 if (inode->i_dtime && low_dtime_check &&
1517 inode->i_dtime < ctx->fs->super->s_inodes_count) {
1518 if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
1519 inode->i_dtime = inode->i_links_count ?
1520 0 : ctx->now;
1521 e2fsck_write_inode(ctx, ino, inode,
1522 "pass1");
1523 failed_csum = 0;
1524 }
1525 }
1526
1527 /*
1528 * This code assumes that deleted inodes have
1529 * i_links_count set to 0.
1530 */
1531 if (!inode->i_links_count) {
1532 if (!inode->i_dtime && inode->i_mode) {
1533 if (fix_problem(ctx,
1534 PR_1_ZERO_DTIME, &pctx)) {
1535 inode->i_dtime = ctx->now;
1536 e2fsck_write_inode(ctx, ino, inode,
1537 "pass1");
1538 failed_csum = 0;
1539 }
1540 }
1541 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1542 continue;
1543 }
1544 /*
1545 * n.b. 0.3c ext2fs code didn't clear i_links_count for
1546 * deleted files. Oops.
1547 *
1548 * Since all new ext2 implementations get this right,
1549 * we now assume that the case of non-zero
1550 * i_links_count and non-zero dtime means that we
1551 * should keep the file, not delete it.
1552 *
1553 */
1554 if (inode->i_dtime) {
1555 if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
1556 inode->i_dtime = 0;
1557 e2fsck_write_inode(ctx, ino, inode, "pass1");
1558 failed_csum = 0;
1559 }
1560 }
1561
1562 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1563 switch (fs->super->s_creator_os) {
1564 case EXT2_OS_HURD:
1565 frag = inode->osd2.hurd2.h_i_frag;
1566 fsize = inode->osd2.hurd2.h_i_fsize;
1567 break;
1568 default:
1569 frag = fsize = 0;
1570 }
1571
1572 if (inode->i_faddr || frag || fsize ||
1573 (LINUX_S_ISDIR(inode->i_mode) && inode->i_dir_acl))
1574 mark_inode_bad(ctx, ino);
1575 if ((fs->super->s_creator_os == EXT2_OS_LINUX) &&
1576 !(fs->super->s_feature_incompat &
1577 EXT4_FEATURE_INCOMPAT_64BIT) &&
1578 inode->osd2.linux2.l_i_file_acl_high != 0)
1579 mark_inode_bad(ctx, ino);
1580 if ((fs->super->s_creator_os == EXT2_OS_LINUX) &&
1581 !(fs->super->s_feature_ro_compat &
1582 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) &&
1583 (inode->osd2.linux2.l_i_blocks_hi != 0))
1584 mark_inode_bad(ctx, ino);
1585 if (inode->i_flags & EXT2_IMAGIC_FL) {
1586 if (imagic_fs) {
1587 if (!ctx->inode_imagic_map)
1588 alloc_imagic_map(ctx);
1589 ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map,
1590 ino);
1591 } else {
1592 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
1593 inode->i_flags &= ~EXT2_IMAGIC_FL;
1594 e2fsck_write_inode(ctx, ino,
1595 inode, "pass1");
1596 failed_csum = 0;
1597 }
1598 }
1599 }
1600
1601 check_inode_extra_space(ctx, &pctx);
1602 check_is_really_dir(ctx, &pctx, block_buf);
1603
1604 /*
1605 * ext2fs_inode_has_valid_blocks2 does not actually look
1606 * at i_block[] values, so not endian-sensitive here.
1607 */
1608 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) &&
1609 LINUX_S_ISLNK(inode->i_mode) &&
1610 !ext2fs_inode_has_valid_blocks2(fs, inode) &&
1611 fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) {
1612 inode->i_flags &= ~EXT4_EXTENTS_FL;
1613 e2fsck_write_inode(ctx, ino, inode, "pass1");
1614 failed_csum = 0;
1615 }
1616
1617 if (LINUX_S_ISDIR(inode->i_mode)) {
1618 ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
1619 e2fsck_add_dir_info(ctx, ino, 0);
1620 ctx->fs_directory_count++;
1621 if (inode->i_flags & EXT4_ENCRYPT_FL)
1622 add_encrypted_dir(ctx, ino);
1623 } else if (LINUX_S_ISREG (inode->i_mode)) {
1624 ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino);
1625 ctx->fs_regular_count++;
1626 } else if (LINUX_S_ISCHR (inode->i_mode) &&
1627 e2fsck_pass1_check_device_inode(fs, inode)) {
1628 check_extents_inlinedata(ctx, &pctx);
1629 check_immutable(ctx, &pctx);
1630 check_size(ctx, &pctx);
1631 ctx->fs_chardev_count++;
1632 } else if (LINUX_S_ISBLK (inode->i_mode) &&
1633 e2fsck_pass1_check_device_inode(fs, inode)) {
1634 check_extents_inlinedata(ctx, &pctx);
1635 check_immutable(ctx, &pctx);
1636 check_size(ctx, &pctx);
1637 ctx->fs_blockdev_count++;
1638 } else if (LINUX_S_ISLNK (inode->i_mode) &&
1639 e2fsck_pass1_check_symlink(fs, ino, inode,
1640 block_buf)) {
1641 check_immutable(ctx, &pctx);
1642 ctx->fs_symlinks_count++;
1643 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
1644 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1645 continue;
1646 } else if (ext2fs_inode_data_blocks(fs, inode) == 0) {
1647 ctx->fs_fast_symlinks_count++;
1648 check_blocks(ctx, &pctx, block_buf);
1649 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1650 continue;
1651 }
1652 }
1653 else if (LINUX_S_ISFIFO (inode->i_mode) &&
1654 e2fsck_pass1_check_device_inode(fs, inode)) {
1655 check_extents_inlinedata(ctx, &pctx);
1656 check_immutable(ctx, &pctx);
1657 check_size(ctx, &pctx);
1658 ctx->fs_fifo_count++;
1659 } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
1660 e2fsck_pass1_check_device_inode(fs, inode)) {
1661 check_extents_inlinedata(ctx, &pctx);
1662 check_immutable(ctx, &pctx);
1663 check_size(ctx, &pctx);
1664 ctx->fs_sockets_count++;
1665 } else
1666 mark_inode_bad(ctx, ino);
1667 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1668 !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
1669 if (inode->i_block[EXT2_IND_BLOCK])
1670 ctx->fs_ind_count++;
1671 if (inode->i_block[EXT2_DIND_BLOCK])
1672 ctx->fs_dind_count++;
1673 if (inode->i_block[EXT2_TIND_BLOCK])
1674 ctx->fs_tind_count++;
1675 }
1676 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1677 !(inode->i_flags & EXT4_INLINE_DATA_FL) &&
1678 (inode->i_block[EXT2_IND_BLOCK] ||
1679 inode->i_block[EXT2_DIND_BLOCK] ||
1680 inode->i_block[EXT2_TIND_BLOCK] ||
1681 ext2fs_file_acl_block(fs, inode))) {
1682 inodes_to_process[process_inode_count].ino = ino;
1683 inodes_to_process[process_inode_count].inode = *inode;
1684 process_inode_count++;
1685 } else
1686 check_blocks(ctx, &pctx, block_buf);
1687
1688 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1689
1690 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1691 goto endit;
1692
1693 if (process_inode_count >= ctx->process_inode_size) {
1694 process_inodes(ctx, block_buf);
1695
1696 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1697 goto endit;
1698 }
1699 }
1700 process_inodes(ctx, block_buf);
1701 ext2fs_close_inode_scan(scan);
1702 scan = NULL;
1703
1704 reserve_block_for_root_repair(ctx);
1705 reserve_block_for_lnf_repair(ctx);
1706
1707 /*
1708 * If any extended attribute blocks' reference counts need to
1709 * be adjusted, either up (ctx->refcount_extra), or down
1710 * (ctx->refcount), then fix them.
1711 */
1712 if (ctx->refcount) {
1713 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
1714 ea_refcount_free(ctx->refcount);
1715 ctx->refcount = 0;
1716 }
1717 if (ctx->refcount_extra) {
1718 adjust_extattr_refcount(ctx, ctx->refcount_extra,
1719 block_buf, +1);
1720 ea_refcount_free(ctx->refcount_extra);
1721 ctx->refcount_extra = 0;
1722 }
1723
1724 if (ctx->invalid_bitmaps)
1725 handle_fs_bad_blocks(ctx);
1726
1727 /* We don't need the block_ea_map any more */
1728 if (ctx->block_ea_map) {
1729 ext2fs_free_block_bitmap(ctx->block_ea_map);
1730 ctx->block_ea_map = 0;
1731 }
1732
1733 if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
1734 clear_problem_context(&pctx);
1735 pctx.errcode = ext2fs_create_resize_inode(fs);
1736 if (pctx.errcode) {
1737 if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE,
1738 &pctx)) {
1739 ctx->flags |= E2F_FLAG_ABORT;
1740 goto endit;
1741 }
1742 pctx.errcode = 0;
1743 }
1744 if (!pctx.errcode) {
1745 e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
1746 "recreate inode");
1747 inode->i_mtime = ctx->now;
1748 e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
1749 "recreate inode");
1750 }
1751 ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
1752 }
1753
1754 if (ctx->flags & E2F_FLAG_RESTART) {
1755 /*
1756 * Only the master copy of the superblock and block
1757 * group descriptors are going to be written during a
1758 * restart, so set the superblock to be used to be the
1759 * master superblock.
1760 */
1761 ctx->use_superblock = 0;
1762 unwind_pass1(fs);
1763 goto endit;
1764 }
1765
1766 if (ctx->block_dup_map) {
1767 if (ctx->options & E2F_OPT_PREEN) {
1768 clear_problem_context(&pctx);
1769 fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
1770 }
1771 e2fsck_pass1_dupblocks(ctx, block_buf);
1772 }
1773 ext2fs_free_mem(&inodes_to_process);
1774 endit:
1775 e2fsck_use_inode_shortcuts(ctx, 0);
1776
1777 if (scan)
1778 ext2fs_close_inode_scan(scan);
1779 if (block_buf)
1780 ext2fs_free_mem(&block_buf);
1781 if (inode)
1782 ext2fs_free_mem(&inode);
1783
1784 /*
1785 * The l+f inode may have been cleared, so zap it now and
1786 * later passes will recalculate it if necessary
1787 */
1788 ctx->lost_and_found = 0;
1789
1790 if ((ctx->flags & E2F_FLAG_SIGNAL_MASK) == 0)
1791 print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io);
1792 }
1793 #undef FINISH_INODE_LOOP
1794
1795 /*
1796 * When the inode_scan routines call this callback at the end of the
1797 * glock group, call process_inodes.
1798 */
1799 static errcode_t scan_callback(ext2_filsys fs,
1800 ext2_inode_scan scan EXT2FS_ATTR((unused)),
1801 dgrp_t group, void * priv_data)
1802 {
1803 struct scan_callback_struct *scan_struct;
1804 e2fsck_t ctx;
1805
1806 scan_struct = (struct scan_callback_struct *) priv_data;
1807 ctx = scan_struct->ctx;
1808
1809 process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf);
1810
1811 if (ctx->progress)
1812 if ((ctx->progress)(ctx, 1, group+1,
1813 ctx->fs->group_desc_count))
1814 return EXT2_ET_CANCEL_REQUESTED;
1815
1816 return 0;
1817 }
1818
1819 /*
1820 * Process the inodes in the "inodes to process" list.
1821 */
1822 static void process_inodes(e2fsck_t ctx, char *block_buf)
1823 {
1824 int i;
1825 struct ext2_inode *old_stashed_inode;
1826 ext2_ino_t old_stashed_ino;
1827 const char *old_operation;
1828 char buf[80];
1829 struct problem_context pctx;
1830
1831 #if 0
1832 printf("begin process_inodes: ");
1833 #endif
1834 if (process_inode_count == 0)
1835 return;
1836 old_operation = ehandler_operation(0);
1837 old_stashed_inode = ctx->stashed_inode;
1838 old_stashed_ino = ctx->stashed_ino;
1839 qsort(inodes_to_process, process_inode_count,
1840 sizeof(struct process_inode_block), process_inode_cmp);
1841 clear_problem_context(&pctx);
1842 for (i=0; i < process_inode_count; i++) {
1843 pctx.inode = ctx->stashed_inode = &inodes_to_process[i].inode;
1844 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
1845
1846 #if 0
1847 printf("%u ", pctx.ino);
1848 #endif
1849 sprintf(buf, _("reading indirect blocks of inode %u"),
1850 pctx.ino);
1851 ehandler_operation(buf);
1852 check_blocks(ctx, &pctx, block_buf);
1853 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1854 break;
1855 }
1856 ctx->stashed_inode = old_stashed_inode;
1857 ctx->stashed_ino = old_stashed_ino;
1858 process_inode_count = 0;
1859 #if 0
1860 printf("end process inodes\n");
1861 #endif
1862 ehandler_operation(old_operation);
1863 }
1864
1865 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
1866 {
1867 const struct process_inode_block *ib_a =
1868 (const struct process_inode_block *) a;
1869 const struct process_inode_block *ib_b =
1870 (const struct process_inode_block *) b;
1871 int ret;
1872
1873 ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
1874 ib_b->inode.i_block[EXT2_IND_BLOCK]);
1875 if (ret == 0)
1876 /*
1877 * We only call process_inodes() for non-extent
1878 * inodes, so it's OK to pass NULL to
1879 * ext2fs_file_acl_block() here.
1880 */
1881 ret = ext2fs_file_acl_block(0, &(ib_a->inode)) -
1882 ext2fs_file_acl_block(0, &(ib_b->inode));
1883 if (ret == 0)
1884 ret = ib_a->ino - ib_b->ino;
1885 return ret;
1886 }
1887
1888 /*
1889 * Mark an inode as being bad in some what
1890 */
1891 static void mark_inode_bad(e2fsck_t ctx, ino_t ino)
1892 {
1893 struct problem_context pctx;
1894
1895 if (!ctx->inode_bad_map) {
1896 clear_problem_context(&pctx);
1897
1898 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
1899 _("bad inode map"), EXT2FS_BMAP64_RBTREE,
1900 "inode_bad_map", &ctx->inode_bad_map);
1901 if (pctx.errcode) {
1902 pctx.num = 3;
1903 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1904 /* Should never get here */
1905 ctx->flags |= E2F_FLAG_ABORT;
1906 return;
1907 }
1908 }
1909 ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino);
1910 }
1911
1912 static void add_encrypted_dir(e2fsck_t ctx, ino_t ino)
1913 {
1914 struct problem_context pctx;
1915
1916 if (!ctx->encrypted_dirs) {
1917 pctx.errcode = ext2fs_u32_list_create(&ctx->encrypted_dirs, 0);
1918 if (pctx.errcode)
1919 goto error;
1920 }
1921 pctx.errcode = ext2fs_u32_list_add(ctx->encrypted_dirs, ino);
1922 if (pctx.errcode == 0)
1923 return;
1924 error:
1925 fix_problem(ctx, PR_1_ALLOCATE_ENCRYPTED_DIRLIST, &pctx);
1926 /* Should never get here */
1927 ctx->flags |= E2F_FLAG_ABORT;
1928 }
1929
1930 /*
1931 * This procedure will allocate the inode "bb" (badblock) map table
1932 */
1933 static void alloc_bb_map(e2fsck_t ctx)
1934 {
1935 struct problem_context pctx;
1936
1937 clear_problem_context(&pctx);
1938 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
1939 _("inode in bad block map"), EXT2FS_BMAP64_RBTREE,
1940 "inode_bb_map", &ctx->inode_bb_map);
1941 if (pctx.errcode) {
1942 pctx.num = 4;
1943 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1944 /* Should never get here */
1945 ctx->flags |= E2F_FLAG_ABORT;
1946 return;
1947 }
1948 }
1949
1950 /*
1951 * This procedure will allocate the inode imagic table
1952 */
1953 static void alloc_imagic_map(e2fsck_t ctx)
1954 {
1955 struct problem_context pctx;
1956
1957 clear_problem_context(&pctx);
1958 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
1959 _("imagic inode map"), EXT2FS_BMAP64_RBTREE,
1960 "inode_imagic_map", &ctx->inode_imagic_map);
1961 if (pctx.errcode) {
1962 pctx.num = 5;
1963 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1964 /* Should never get here */
1965 ctx->flags |= E2F_FLAG_ABORT;
1966 return;
1967 }
1968 }
1969
1970 /*
1971 * Marks a block as in use, setting the dup_map if it's been set
1972 * already. Called by process_block and process_bad_block.
1973 *
1974 * WARNING: Assumes checks have already been done to make sure block
1975 * is valid. This is true in both process_block and process_bad_block.
1976 */
1977 static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block)
1978 {
1979 struct problem_context pctx;
1980
1981 clear_problem_context(&pctx);
1982
1983 if (ext2fs_fast_test_block_bitmap2(ctx->block_found_map, block)) {
1984 if (!ctx->block_dup_map) {
1985 pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
1986 _("multiply claimed block map"),
1987 EXT2FS_BMAP64_RBTREE, "block_dup_map",
1988 &ctx->block_dup_map);
1989 if (pctx.errcode) {
1990 pctx.num = 3;
1991 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
1992 &pctx);
1993 /* Should never get here */
1994 ctx->flags |= E2F_FLAG_ABORT;
1995 return;
1996 }
1997 }
1998 ext2fs_fast_mark_block_bitmap2(ctx->block_dup_map, block);
1999 } else {
2000 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block);
2001 }
2002 }
2003
2004 static _INLINE_ void mark_blocks_used(e2fsck_t ctx, blk64_t block,
2005 unsigned int num)
2006 {
2007 if (ext2fs_test_block_bitmap_range2(ctx->block_found_map, block, num))
2008 ext2fs_mark_block_bitmap_range2(ctx->block_found_map, block, num);
2009 else
2010 while (num--)
2011 mark_block_used(ctx, block++);
2012 }
2013
2014 /*
2015 * Adjust the extended attribute block's reference counts at the end
2016 * of pass 1, either by subtracting out references for EA blocks that
2017 * are still referenced in ctx->refcount, or by adding references for
2018 * EA blocks that had extra references as accounted for in
2019 * ctx->refcount_extra.
2020 */
2021 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
2022 char *block_buf, int adjust_sign)
2023 {
2024 struct ext2_ext_attr_header *header;
2025 struct problem_context pctx;
2026 ext2_filsys fs = ctx->fs;
2027 blk64_t blk;
2028 __u32 should_be;
2029 int count;
2030
2031 clear_problem_context(&pctx);
2032
2033 ea_refcount_intr_begin(refcount);
2034 while (1) {
2035 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
2036 break;
2037 pctx.blk = blk;
2038 pctx.errcode = ext2fs_read_ext_attr3(fs, blk, block_buf,
2039 pctx.ino);
2040 if (pctx.errcode) {
2041 fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
2042 return;
2043 }
2044 header = (struct ext2_ext_attr_header *) block_buf;
2045 pctx.blkcount = header->h_refcount;
2046 should_be = header->h_refcount + adjust_sign * count;
2047 pctx.num = should_be;
2048 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
2049 header->h_refcount = should_be;
2050 pctx.errcode = ext2fs_write_ext_attr3(fs, blk,
2051 block_buf,
2052 pctx.ino);
2053 if (pctx.errcode) {
2054 fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT,
2055 &pctx);
2056 continue;
2057 }
2058 }
2059 }
2060 }
2061
2062 /*
2063 * Handle processing the extended attribute blocks
2064 */
2065 static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
2066 char *block_buf)
2067 {
2068 ext2_filsys fs = ctx->fs;
2069 ext2_ino_t ino = pctx->ino;
2070 struct ext2_inode *inode = pctx->inode;
2071 blk64_t blk;
2072 char * end;
2073 struct ext2_ext_attr_header *header;
2074 struct ext2_ext_attr_entry *entry;
2075 int count;
2076 region_t region = 0;
2077 int failed_csum = 0;
2078
2079 blk = ext2fs_file_acl_block(fs, inode);
2080 if (blk == 0)
2081 return 0;
2082
2083 /*
2084 * If the Extended attribute flag isn't set, then a non-zero
2085 * file acl means that the inode is corrupted.
2086 *
2087 * Or if the extended attribute block is an invalid block,
2088 * then the inode is also corrupted.
2089 */
2090 if (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR) ||
2091 (blk < fs->super->s_first_data_block) ||
2092 (blk >= ext2fs_blocks_count(fs->super))) {
2093 mark_inode_bad(ctx, ino);
2094 return 0;
2095 }
2096
2097 /* If ea bitmap hasn't been allocated, create it */
2098 if (!ctx->block_ea_map) {
2099 pctx->errcode = e2fsck_allocate_block_bitmap(fs,
2100 _("ext attr block map"),
2101 EXT2FS_BMAP64_RBTREE, "block_ea_map",
2102 &ctx->block_ea_map);
2103 if (pctx->errcode) {
2104 pctx->num = 2;
2105 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
2106 ctx->flags |= E2F_FLAG_ABORT;
2107 return 0;
2108 }
2109 }
2110
2111 /* Create the EA refcount structure if necessary */
2112 if (!ctx->refcount) {
2113 pctx->errcode = ea_refcount_create(0, &ctx->refcount);
2114 if (pctx->errcode) {
2115 pctx->num = 1;
2116 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2117 ctx->flags |= E2F_FLAG_ABORT;
2118 return 0;
2119 }
2120 }
2121
2122 #if 0
2123 /* Debugging text */
2124 printf("Inode %u has EA block %u\n", ino, blk);
2125 #endif
2126
2127 /* Have we seen this EA block before? */
2128 if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) {
2129 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
2130 return 1;
2131 /* Ooops, this EA was referenced more than it stated */
2132 if (!ctx->refcount_extra) {
2133 pctx->errcode = ea_refcount_create(0,
2134 &ctx->refcount_extra);
2135 if (pctx->errcode) {
2136 pctx->num = 2;
2137 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2138 ctx->flags |= E2F_FLAG_ABORT;
2139 return 0;
2140 }
2141 }
2142 ea_refcount_increment(ctx->refcount_extra, blk, 0);
2143 return 1;
2144 }
2145
2146 /*
2147 * OK, we haven't seen this EA block yet. So we need to
2148 * validate it
2149 */
2150 pctx->blk = blk;
2151 pctx->errcode = ext2fs_read_ext_attr3(fs, blk, block_buf, pctx->ino);
2152 if (pctx->errcode == EXT2_ET_EXT_ATTR_CSUM_INVALID) {
2153 pctx->errcode = 0;
2154 failed_csum = 1;
2155 } else if (pctx->errcode == EXT2_ET_BAD_EA_HEADER)
2156 pctx->errcode = 0;
2157
2158 if (pctx->errcode &&
2159 fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx)) {
2160 pctx->errcode = 0;
2161 goto clear_extattr;
2162 }
2163 header = (struct ext2_ext_attr_header *) block_buf;
2164 pctx->blk = ext2fs_file_acl_block(fs, inode);
2165 if (((ctx->ext_attr_ver == 1) &&
2166 (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
2167 ((ctx->ext_attr_ver == 2) &&
2168 (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
2169 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
2170 goto clear_extattr;
2171 }
2172
2173 if (header->h_blocks != 1) {
2174 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
2175 goto clear_extattr;
2176 }
2177
2178 if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
2179 goto clear_extattr;
2180
2181 region = region_create(0, fs->blocksize);
2182 if (!region) {
2183 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
2184 ctx->flags |= E2F_FLAG_ABORT;
2185 return 0;
2186 }
2187 if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
2188 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2189 goto clear_extattr;
2190 }
2191
2192 entry = (struct ext2_ext_attr_entry *)(header+1);
2193 end = block_buf + fs->blocksize;
2194 while ((char *)entry < end && *(__u32 *)entry) {
2195 __u32 hash;
2196
2197 if (region_allocate(region, (char *)entry - (char *)header,
2198 EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
2199 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2200 goto clear_extattr;
2201 break;
2202 }
2203 if ((ctx->ext_attr_ver == 1 &&
2204 (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
2205 (ctx->ext_attr_ver == 2 &&
2206 entry->e_name_index == 0)) {
2207 if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
2208 goto clear_extattr;
2209 break;
2210 }
2211 if (entry->e_value_block != 0) {
2212 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
2213 goto clear_extattr;
2214 }
2215 if (entry->e_value_offs + entry->e_value_size > fs->blocksize) {
2216 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
2217 goto clear_extattr;
2218 break;
2219 }
2220 if (entry->e_value_size &&
2221 region_allocate(region, entry->e_value_offs,
2222 EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
2223 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2224 goto clear_extattr;
2225 }
2226
2227 hash = ext2fs_ext_attr_hash_entry(entry, block_buf +
2228 entry->e_value_offs);
2229
2230 if (entry->e_hash != hash) {
2231 pctx->num = entry->e_hash;
2232 if (fix_problem(ctx, PR_1_ATTR_HASH, pctx))
2233 goto clear_extattr;
2234 entry->e_hash = hash;
2235 }
2236
2237 entry = EXT2_EXT_ATTR_NEXT(entry);
2238 }
2239 if (region_allocate(region, (char *)entry - (char *)header, 4)) {
2240 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2241 goto clear_extattr;
2242 }
2243 region_free(region);
2244
2245 /*
2246 * We only get here if there was no other errors that were fixed.
2247 * If there was a checksum fail, ask to correct it.
2248 */
2249 if (failed_csum &&
2250 fix_problem(ctx, PR_1_EA_BLOCK_ONLY_CSUM_INVALID, pctx)) {
2251 pctx->errcode = ext2fs_write_ext_attr3(fs, blk, block_buf,
2252 pctx->ino);
2253 if (pctx->errcode)
2254 return 0;
2255 }
2256
2257 count = header->h_refcount - 1;
2258 if (count)
2259 ea_refcount_store(ctx->refcount, blk, count);
2260 mark_block_used(ctx, blk);
2261 ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk);
2262 return 1;
2263
2264 clear_extattr:
2265 if (region)
2266 region_free(region);
2267 ext2fs_file_acl_block_set(fs, inode, 0);
2268 e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
2269 return 0;
2270 }
2271
2272 /* Returns 1 if bad htree, 0 if OK */
2273 static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
2274 ext2_ino_t ino, struct ext2_inode *inode,
2275 char *block_buf)
2276 {
2277 struct ext2_dx_root_info *root;
2278 ext2_filsys fs = ctx->fs;
2279 errcode_t retval;
2280 blk64_t blk;
2281
2282 if ((!LINUX_S_ISDIR(inode->i_mode) &&
2283 fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
2284 (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) &&
2285 fix_problem(ctx, PR_1_HTREE_SET, pctx)))
2286 return 1;
2287
2288 pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk);
2289
2290 if ((pctx->errcode) ||
2291 (blk == 0) ||
2292 (blk < fs->super->s_first_data_block) ||
2293 (blk >= ext2fs_blocks_count(fs->super))) {
2294 if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2295 return 1;
2296 else
2297 return 0;
2298 }
2299
2300 retval = io_channel_read_blk64(fs->io, blk, 1, block_buf);
2301 if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2302 return 1;
2303
2304 /* XXX should check that beginning matches a directory */
2305 root = (struct ext2_dx_root_info *) (block_buf + 24);
2306
2307 if ((root->reserved_zero || root->info_length < 8) &&
2308 fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2309 return 1;
2310
2311 pctx->num = root->hash_version;
2312 if ((root->hash_version != EXT2_HASH_LEGACY) &&
2313 (root->hash_version != EXT2_HASH_HALF_MD4) &&
2314 (root->hash_version != EXT2_HASH_TEA) &&
2315 fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
2316 return 1;
2317
2318 if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
2319 fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
2320 return 1;
2321
2322 pctx->num = root->indirect_levels;
2323 if ((root->indirect_levels > 1) &&
2324 fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
2325 return 1;
2326
2327 return 0;
2328 }
2329
2330 void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
2331 struct ext2_inode *inode, int restart_flag,
2332 const char *source)
2333 {
2334 inode->i_flags = 0;
2335 inode->i_links_count = 0;
2336 ext2fs_icount_store(ctx->inode_link_info, ino, 0);
2337 inode->i_dtime = ctx->now;
2338
2339 /*
2340 * If a special inode has such rotten block mappings that we
2341 * want to clear the whole inode, be sure to actually zap
2342 * the block maps because i_links_count isn't checked for
2343 * special inodes, and we'll end up right back here the next
2344 * time we run fsck.
2345 */
2346 if (ino < EXT2_FIRST_INODE(ctx->fs->super))
2347 memset(inode->i_block, 0, sizeof(inode->i_block));
2348
2349 ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
2350 ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
2351 if (ctx->inode_reg_map)
2352 ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
2353 if (ctx->inode_bad_map)
2354 ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
2355
2356 /*
2357 * If the inode was partially accounted for before processing
2358 * was aborted, we need to restart the pass 1 scan.
2359 */
2360 ctx->flags |= restart_flag;
2361
2362 if (ino == EXT2_BAD_INO)
2363 memset(inode, 0, sizeof(struct ext2_inode));
2364
2365 e2fsck_write_inode(ctx, ino, inode, source);
2366 }
2367
2368 /*
2369 * Use the multiple-blocks reclamation code to fix alignment problems in
2370 * a bigalloc filesystem. We want a logical cluster to map to *only* one
2371 * physical cluster, and we want the block offsets within that cluster to
2372 * line up.
2373 */
2374 static int has_unaligned_cluster_map(e2fsck_t ctx,
2375 blk64_t last_pblk, e2_blkcnt_t last_lblk,
2376 blk64_t pblk, blk64_t lblk)
2377 {
2378 blk64_t cluster_mask;
2379
2380 if (!ctx->fs->cluster_ratio_bits)
2381 return 0;
2382 cluster_mask = EXT2FS_CLUSTER_MASK(ctx->fs);
2383
2384 /*
2385 * If the block in the logical cluster doesn't align with the block in
2386 * the physical cluster...
2387 */
2388 if ((lblk & cluster_mask) != (pblk & cluster_mask))
2389 return 1;
2390
2391 /*
2392 * If we cross a physical cluster boundary within a logical cluster...
2393 */
2394 if (last_pblk && (lblk & cluster_mask) != 0 &&
2395 EXT2FS_B2C(ctx->fs, lblk) == EXT2FS_B2C(ctx->fs, last_lblk) &&
2396 EXT2FS_B2C(ctx->fs, pblk) != EXT2FS_B2C(ctx->fs, last_pblk))
2397 return 1;
2398
2399 return 0;
2400 }
2401
2402 static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
2403 struct process_block_struct *pb,
2404 blk64_t start_block, blk64_t end_block,
2405 blk64_t eof_block,
2406 ext2_extent_handle_t ehandle,
2407 int try_repairs)
2408 {
2409 struct ext2fs_extent extent;
2410 blk64_t blk, last_lblk;
2411 e2_blkcnt_t blockcnt;
2412 unsigned int i;
2413 int is_dir, is_leaf;
2414 problem_t problem;
2415 struct ext2_extent_info info;
2416 int failed_csum = 0;
2417
2418 if (pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID)
2419 failed_csum = 1;
2420
2421 pctx->errcode = ext2fs_extent_get_info(ehandle, &info);
2422 if (pctx->errcode)
2423 return;
2424
2425 pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB,
2426 &extent);
2427 while ((pctx->errcode == 0 ||
2428 pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID) &&
2429 info.num_entries-- > 0) {
2430 is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF;
2431 is_dir = LINUX_S_ISDIR(pctx->inode->i_mode);
2432 last_lblk = extent.e_lblk + extent.e_len - 1;
2433
2434 problem = 0;
2435 pctx->blk = extent.e_pblk;
2436 pctx->blk2 = extent.e_lblk;
2437 pctx->num = extent.e_len;
2438 pctx->blkcount = extent.e_lblk + extent.e_len;
2439
2440 if (extent.e_pblk == 0 ||
2441 extent.e_pblk < ctx->fs->super->s_first_data_block ||
2442 extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super))
2443 problem = PR_1_EXTENT_BAD_START_BLK;
2444 else if (extent.e_lblk < start_block)
2445 problem = PR_1_OUT_OF_ORDER_EXTENTS;
2446 else if ((end_block && last_lblk > end_block) &&
2447 (!(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT &&
2448 last_lblk > eof_block)))
2449 problem = PR_1_EXTENT_END_OUT_OF_BOUNDS;
2450 else if (is_leaf && extent.e_len == 0)
2451 problem = PR_1_EXTENT_LENGTH_ZERO;
2452 else if (is_leaf &&
2453 (extent.e_pblk + extent.e_len) >
2454 ext2fs_blocks_count(ctx->fs->super))
2455 problem = PR_1_EXTENT_ENDS_BEYOND;
2456 else if (is_leaf && is_dir &&
2457 ((extent.e_lblk + extent.e_len) >
2458 (1 << (21 - ctx->fs->super->s_log_block_size))))
2459 problem = PR_1_TOOBIG_DIR;
2460
2461 if (is_leaf && problem == 0 && extent.e_len > 0 &&
2462 region_allocate(pb->region, extent.e_lblk, extent.e_len))
2463 problem = PR_1_EXTENT_COLLISION;
2464
2465 /*
2466 * Uninitialized blocks in a directory? Clear the flag and
2467 * we'll interpret the blocks later.
2468 */
2469 if (try_repairs && is_dir && problem == 0 &&
2470 (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
2471 fix_problem(ctx, PR_1_UNINIT_DBLOCK, pctx)) {
2472 extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
2473 pb->inode_modified = 1;
2474 pctx->errcode = ext2fs_extent_replace(ehandle, 0,
2475 &extent);
2476 if (pctx->errcode)
2477 return;
2478 failed_csum = 0;
2479 }
2480
2481 if (try_repairs && problem) {
2482 report_problem:
2483 if (fix_problem(ctx, problem, pctx)) {
2484 if (ctx->invalid_bitmaps) {
2485 /*
2486 * If fsck knows the bitmaps are bad,
2487 * skip to the next extent and
2488 * try to clear this extent again
2489 * after fixing the bitmaps, by
2490 * restarting fsck.
2491 */
2492 pctx->errcode = ext2fs_extent_get(
2493 ehandle,
2494 EXT2_EXTENT_NEXT_SIB,
2495 &extent);
2496 ctx->flags |= E2F_FLAG_RESTART_LATER;
2497 if (pctx->errcode ==
2498 EXT2_ET_NO_CURRENT_NODE) {
2499 pctx->errcode = 0;
2500 break;
2501 }
2502 continue;
2503 }
2504 e2fsck_read_bitmaps(ctx);
2505 pb->inode_modified = 1;
2506 pctx->errcode =
2507 ext2fs_extent_delete(ehandle, 0);
2508 if (pctx->errcode) {
2509 pctx->str = "ext2fs_extent_delete";
2510 return;
2511 }
2512 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
2513 if (pctx->errcode &&
2514 pctx->errcode != EXT2_ET_NO_CURRENT_NODE) {
2515 pctx->str = "ext2fs_extent_fix_parents";
2516 return;
2517 }
2518 pctx->errcode = ext2fs_extent_get(ehandle,
2519 EXT2_EXTENT_CURRENT,
2520 &extent);
2521 if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) {
2522 pctx->errcode = 0;
2523 break;
2524 }
2525 failed_csum = 0;
2526 continue;
2527 }
2528 goto next;
2529 }
2530
2531 if (!is_leaf) {
2532 blk64_t lblk = extent.e_lblk;
2533 int next_try_repairs = 1;
2534
2535 blk = extent.e_pblk;
2536
2537 /*
2538 * If this lower extent block collides with critical
2539 * metadata, don't try to repair the damage. Pass 1b
2540 * will reallocate the block; then we can try again.
2541 */
2542 if (pb->ino != EXT2_RESIZE_INO &&
2543 ext2fs_test_block_bitmap2(ctx->block_metadata_map,
2544 extent.e_pblk)) {
2545 next_try_repairs = 0;
2546 pctx->blk = blk;
2547 fix_problem(ctx,
2548 PR_1_CRITICAL_METADATA_COLLISION,
2549 pctx);
2550 ctx->flags |= E2F_FLAG_RESTART_LATER;
2551 }
2552 pctx->errcode = ext2fs_extent_get(ehandle,
2553 EXT2_EXTENT_DOWN, &extent);
2554 if (pctx->errcode &&
2555 pctx->errcode != EXT2_ET_EXTENT_CSUM_INVALID) {
2556 pctx->str = "EXT2_EXTENT_DOWN";
2557 problem = PR_1_EXTENT_HEADER_INVALID;
2558 if (!next_try_repairs)
2559 return;
2560 if (pctx->errcode == EXT2_ET_EXTENT_HEADER_BAD)
2561 goto report_problem;
2562 return;
2563 }
2564 /* The next extent should match this index's logical start */
2565 if (extent.e_lblk != lblk) {
2566 struct ext2_extent_info e_info;
2567
2568 ext2fs_extent_get_info(ehandle, &e_info);
2569 pctx->blk = lblk;
2570 pctx->blk2 = extent.e_lblk;
2571 pctx->num = e_info.curr_level - 1;
2572 problem = PR_1_EXTENT_INDEX_START_INVALID;
2573 if (fix_problem(ctx, problem, pctx)) {
2574 pb->inode_modified = 1;
2575 pctx->errcode =
2576 ext2fs_extent_fix_parents(ehandle);
2577 if (pctx->errcode) {
2578 pctx->str = "ext2fs_extent_fix_parents";
2579 return;
2580 }
2581 }
2582 }
2583 scan_extent_node(ctx, pctx, pb, extent.e_lblk,
2584 last_lblk, eof_block, ehandle,
2585 next_try_repairs);
2586 if (pctx->errcode)
2587 return;
2588 pctx->errcode = ext2fs_extent_get(ehandle,
2589 EXT2_EXTENT_UP, &extent);
2590 if (pctx->errcode) {
2591 pctx->str = "EXT2_EXTENT_UP";
2592 return;
2593 }
2594 mark_block_used(ctx, blk);
2595 pb->num_blocks++;
2596 goto next;
2597 }
2598
2599 if ((pb->previous_block != 0) &&
2600 (pb->previous_block+1 != extent.e_pblk)) {
2601 if (ctx->options & E2F_OPT_FRAGCHECK) {
2602 char type = '?';
2603
2604 if (pb->is_dir)
2605 type = 'd';
2606 else if (pb->is_reg)
2607 type = 'f';
2608
2609 printf(("%6lu(%c): expecting %6lu "
2610 "actual extent "
2611 "phys %6lu log %lu len %lu\n"),
2612 (unsigned long) pctx->ino, type,
2613 (unsigned long) pb->previous_block+1,
2614 (unsigned long) extent.e_pblk,
2615 (unsigned long) extent.e_lblk,
2616 (unsigned long) extent.e_len);
2617 }
2618 pb->fragmented = 1;
2619 }
2620 /*
2621 * If we notice a gap in the logical block mappings of an
2622 * extent-mapped directory, offer to close the hole by
2623 * moving the logical block down, otherwise we'll go mad in
2624 * pass 3 allocating empty directory blocks to fill the hole.
2625 */
2626 if (try_repairs && is_dir &&
2627 pb->last_block + 1 < (e2_blkcnt_t)extent.e_lblk) {
2628 blk64_t new_lblk;
2629
2630 new_lblk = pb->last_block + 1;
2631 if (EXT2FS_CLUSTER_RATIO(ctx->fs) > 1)
2632 new_lblk = ((new_lblk +
2633 EXT2FS_CLUSTER_RATIO(ctx->fs) - 1) &
2634 ~EXT2FS_CLUSTER_MASK(ctx->fs)) |
2635 (extent.e_pblk &
2636 EXT2FS_CLUSTER_MASK(ctx->fs));
2637 pctx->blk = extent.e_lblk;
2638 pctx->blk2 = new_lblk;
2639 if (fix_problem(ctx, PR_1_COLLAPSE_DBLOCK, pctx)) {
2640 extent.e_lblk = new_lblk;
2641 pb->inode_modified = 1;
2642 pctx->errcode = ext2fs_extent_replace(ehandle,
2643 0, &extent);
2644 if (pctx->errcode) {
2645 pctx->errcode = 0;
2646 goto alloc_later;
2647 }
2648 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
2649 if (pctx->errcode)
2650 goto failed_add_dir_block;
2651 pctx->errcode = ext2fs_extent_goto(ehandle,
2652 extent.e_lblk);
2653 if (pctx->errcode)
2654 goto failed_add_dir_block;
2655 last_lblk = extent.e_lblk + extent.e_len - 1;
2656 failed_csum = 0;
2657 }
2658 }
2659 alloc_later:
2660 while (is_dir && (++pb->last_db_block <
2661 (e2_blkcnt_t) extent.e_lblk)) {
2662 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist,
2663 pb->ino, 0,
2664 pb->last_db_block);
2665 if (pctx->errcode) {
2666 pctx->blk = 0;
2667 pctx->num = pb->last_db_block;
2668 goto failed_add_dir_block;
2669 }
2670 }
2671 if (!ctx->fs->cluster_ratio_bits) {
2672 mark_blocks_used(ctx, extent.e_pblk, extent.e_len);
2673 pb->num_blocks += extent.e_len;
2674 }
2675 for (blk = extent.e_pblk, blockcnt = extent.e_lblk, i = 0;
2676 i < extent.e_len;
2677 blk++, blockcnt++, i++) {
2678 if (ctx->fs->cluster_ratio_bits &&
2679 !(pb->previous_block &&
2680 (EXT2FS_B2C(ctx->fs, blk) ==
2681 EXT2FS_B2C(ctx->fs, pb->previous_block)) &&
2682 (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
2683 ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
2684 mark_block_used(ctx, blk);
2685 pb->num_blocks++;
2686 }
2687 if (has_unaligned_cluster_map(ctx, pb->previous_block,
2688 pb->last_block, blk,
2689 blockcnt)) {
2690 pctx->blk = blockcnt;
2691 pctx->blk2 = blk;
2692 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
2693 mark_block_used(ctx, blk);
2694 mark_block_used(ctx, blk);
2695 }
2696 pb->last_block = blockcnt;
2697 pb->previous_block = blk;
2698
2699 if (is_dir) {
2700 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pctx->ino, blk, blockcnt);
2701 if (pctx->errcode) {
2702 pctx->blk = blk;
2703 pctx->num = blockcnt;
2704 failed_add_dir_block:
2705 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
2706 /* Should never get here */
2707 ctx->flags |= E2F_FLAG_ABORT;
2708 return;
2709 }
2710 }
2711 }
2712 if (is_dir && extent.e_len > 0)
2713 pb->last_db_block = blockcnt - 1;
2714 pb->previous_block = extent.e_pblk + extent.e_len - 1;
2715 start_block = pb->last_block = last_lblk;
2716 if (is_leaf && !is_dir &&
2717 !(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT))
2718 pb->last_init_lblock = last_lblk;
2719 next:
2720 pctx->errcode = ext2fs_extent_get(ehandle,
2721 EXT2_EXTENT_NEXT_SIB,
2722 &extent);
2723 }
2724
2725 /* Failed csum but passes checks? Ask to fix checksum. */
2726 if (failed_csum &&
2727 fix_problem(ctx, PR_1_EXTENT_ONLY_CSUM_INVALID, pctx)) {
2728 pb->inode_modified = 1;
2729 pctx->errcode = ext2fs_extent_replace(ehandle, 0, &extent);
2730 if (pctx->errcode)
2731 return;
2732 }
2733
2734 if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT)
2735 pctx->errcode = 0;
2736 }
2737
2738 static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
2739 struct process_block_struct *pb)
2740 {
2741 struct ext2_extent_info info;
2742 struct ext2_inode *inode = pctx->inode;
2743 ext2_extent_handle_t ehandle;
2744 ext2_filsys fs = ctx->fs;
2745 ext2_ino_t ino = pctx->ino;
2746 errcode_t retval;
2747 blk64_t eof_lblk;
2748
2749 pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle);
2750 if (pctx->errcode) {
2751 if (fix_problem(ctx, PR_1_READ_EXTENT, pctx))
2752 e2fsck_clear_inode(ctx, ino, inode, 0,
2753 "check_blocks_extents");
2754 pctx->errcode = 0;
2755 return;
2756 }
2757
2758 retval = ext2fs_extent_get_info(ehandle, &info);
2759 if (retval == 0) {
2760 if (info.max_depth >= MAX_EXTENT_DEPTH_COUNT)
2761 info.max_depth = MAX_EXTENT_DEPTH_COUNT-1;
2762 ctx->extent_depth_count[info.max_depth]++;
2763 }
2764
2765 pb->region = region_create(0, info.max_lblk);
2766 if (!pb->region) {
2767 ext2fs_extent_free(ehandle);
2768 fix_problem(ctx, PR_1_EXTENT_ALLOC_REGION_ABORT, pctx);
2769 ctx->flags |= E2F_FLAG_ABORT;
2770 return;
2771 }
2772
2773 eof_lblk = ((EXT2_I_SIZE(inode) + fs->blocksize - 1) >>
2774 EXT2_BLOCK_SIZE_BITS(fs->super)) - 1;
2775 scan_extent_node(ctx, pctx, pb, 0, 0, eof_lblk, ehandle, 1);
2776 if (pctx->errcode &&
2777 fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) {
2778 pb->num_blocks = 0;
2779 inode->i_blocks = 0;
2780 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
2781 "check_blocks_extents");
2782 pctx->errcode = 0;
2783 }
2784 region_free(pb->region);
2785 pb->region = NULL;
2786 ext2fs_extent_free(ehandle);
2787 }
2788
2789 /*
2790 * In fact we don't need to check blocks for an inode with inline data
2791 * because this inode doesn't have any blocks. In this function all
2792 * we need to do is add this inode into dblist when it is a directory.
2793 */
2794 static void check_blocks_inline_data(e2fsck_t ctx, struct problem_context *pctx,
2795 struct process_block_struct *pb)
2796 {
2797 int flags;
2798 size_t inline_data_size = 0;
2799
2800 if (!pb->is_dir) {
2801 pctx->errcode = 0;
2802 return;
2803 }
2804
2805 /* Process the dirents in i_block[] as the "first" block. */
2806 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 0);
2807 if (pctx->errcode)
2808 goto err;
2809
2810 /* Process the dirents in the EA as a "second" block. */
2811 flags = ctx->fs->flags;
2812 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
2813 pctx->errcode = ext2fs_inline_data_size(ctx->fs, pb->ino,
2814 &inline_data_size);
2815 ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
2816 (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
2817 if (pctx->errcode) {
2818 pctx->errcode = 0;
2819 return;
2820 }
2821
2822 if (inline_data_size <= EXT4_MIN_INLINE_DATA_SIZE)
2823 return;
2824
2825 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 1);
2826 if (pctx->errcode)
2827 goto err;
2828
2829 return;
2830 err:
2831 pctx->blk = 0;
2832 pctx->num = 0;
2833 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
2834 ctx->flags |= E2F_FLAG_ABORT;
2835 }
2836
2837 /*
2838 * This subroutine is called on each inode to account for all of the
2839 * blocks used by that inode.
2840 */
2841 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
2842 char *block_buf)
2843 {
2844 ext2_filsys fs = ctx->fs;
2845 struct process_block_struct pb;
2846 ext2_ino_t ino = pctx->ino;
2847 struct ext2_inode *inode = pctx->inode;
2848 unsigned bad_size = 0;
2849 int dirty_inode = 0;
2850 int extent_fs;
2851 int inlinedata_fs;
2852 __u64 size;
2853
2854 pb.ino = ino;
2855 pb.num_blocks = 0;
2856 pb.last_block = -1;
2857 pb.last_init_lblock = -1;
2858 pb.last_db_block = -1;
2859 pb.num_illegal_blocks = 0;
2860 pb.suppress = 0; pb.clear = 0;
2861 pb.fragmented = 0;
2862 pb.compressed = 0;
2863 pb.previous_block = 0;
2864 pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
2865 pb.is_reg = LINUX_S_ISREG(inode->i_mode);
2866 pb.max_blocks = 1 << (31 - fs->super->s_log_block_size);
2867 pb.inode = inode;
2868 pb.pctx = pctx;
2869 pb.ctx = ctx;
2870 pb.inode_modified = 0;
2871 pctx->ino = ino;
2872 pctx->errcode = 0;
2873
2874 extent_fs = (ctx->fs->super->s_feature_incompat &
2875 EXT3_FEATURE_INCOMPAT_EXTENTS);
2876 inlinedata_fs = (ctx->fs->super->s_feature_incompat &
2877 EXT4_FEATURE_INCOMPAT_INLINE_DATA);
2878
2879 if (check_ext_attr(ctx, pctx, block_buf)) {
2880 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2881 goto out;
2882 pb.num_blocks++;
2883 }
2884
2885 if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL))
2886 check_blocks_inline_data(ctx, pctx, &pb);
2887 else if (ext2fs_inode_has_valid_blocks2(fs, inode)) {
2888 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
2889 check_blocks_extents(ctx, pctx, &pb);
2890 else {
2891 int flags;
2892 /*
2893 * If we've modified the inode, write it out before
2894 * iterate() tries to use it.
2895 */
2896 if (dirty_inode) {
2897 e2fsck_write_inode(ctx, ino, inode,
2898 "check_blocks");
2899 dirty_inode = 0;
2900 }
2901 flags = fs->flags;
2902 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
2903 pctx->errcode = ext2fs_block_iterate3(fs, ino,
2904 pb.is_dir ? BLOCK_FLAG_HOLE : 0,
2905 block_buf, process_block, &pb);
2906 /*
2907 * We do not have uninitialized extents in non extent
2908 * files.
2909 */
2910 pb.last_init_lblock = pb.last_block;
2911 /*
2912 * If iterate() changed a block mapping, we have to
2913 * re-read the inode. If we decide to clear the
2914 * inode after clearing some stuff, we'll re-write the
2915 * bad mappings into the inode!
2916 */
2917 if (pb.inode_modified)
2918 e2fsck_read_inode(ctx, ino, inode,
2919 "check_blocks");
2920 fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
2921 (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
2922 }
2923 }
2924 end_problem_latch(ctx, PR_LATCH_BLOCK);
2925 end_problem_latch(ctx, PR_LATCH_TOOBIG);
2926 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2927 goto out;
2928 if (pctx->errcode)
2929 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
2930
2931 if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) {
2932 if (LINUX_S_ISDIR(inode->i_mode))
2933 ctx->fs_fragmented_dir++;
2934 else
2935 ctx->fs_fragmented++;
2936 }
2937
2938 if (pb.clear) {
2939 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
2940 "check_blocks");
2941 return;
2942 }
2943
2944 if (inode->i_flags & EXT2_INDEX_FL) {
2945 if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
2946 inode->i_flags &= ~EXT2_INDEX_FL;
2947 dirty_inode++;
2948 } else {
2949 #ifdef ENABLE_HTREE
2950 e2fsck_add_dx_dir(ctx, ino, pb.last_block+1);
2951 #endif
2952 }
2953 }
2954
2955 if (!pb.num_blocks && pb.is_dir &&
2956 !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
2957 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
2958 e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
2959 ctx->fs_directory_count--;
2960 return;
2961 }
2962 }
2963
2964 if (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INODE(ctx->fs->super)) {
2965 quota_data_add(ctx->qctx, inode, ino,
2966 pb.num_blocks * fs->blocksize);
2967 quota_data_inodes(ctx->qctx, inode, ino, +1);
2968 }
2969
2970 if (!(fs->super->s_feature_ro_compat &
2971 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
2972 !(inode->i_flags & EXT4_HUGE_FILE_FL))
2973 pb.num_blocks *= (fs->blocksize / 512);
2974 pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs);
2975 #if 0
2976 printf("inode %u, i_size = %u, last_block = %lld, i_blocks=%llu, num_blocks = %llu\n",
2977 ino, inode->i_size, pb.last_block, ext2fs_inode_i_blocks(fs, inode),
2978 pb.num_blocks);
2979 #endif
2980 if (pb.is_dir) {
2981 int nblock = inode->i_size >> EXT2_BLOCK_SIZE_BITS(fs->super);
2982 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
2983 int flags;
2984 size_t size;
2985 errcode_t err;
2986
2987 size = 0;
2988 flags = ctx->fs->flags;
2989 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
2990 err = ext2fs_inline_data_size(ctx->fs, pctx->ino,
2991 &size);
2992 ctx->fs->flags = (flags &
2993 EXT2_FLAG_IGNORE_CSUM_ERRORS) |
2994 (ctx->fs->flags &
2995 ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
2996 if (err || size != inode->i_size) {
2997 bad_size = 7;
2998 pctx->num = size;
2999 }
3000 } else if (inode->i_size & (fs->blocksize - 1))
3001 bad_size = 5;
3002 else if (nblock > (pb.last_block + 1))
3003 bad_size = 1;
3004 else if (nblock < (pb.last_block + 1)) {
3005 if (((pb.last_block + 1) - nblock) >
3006 fs->super->s_prealloc_dir_blocks)
3007 bad_size = 2;
3008 }
3009 } else {
3010 e2_blkcnt_t blkpg = ctx->blocks_per_page;
3011
3012 size = EXT2_I_SIZE(inode);
3013 if ((pb.last_init_lblock >= 0) &&
3014 /* allow allocated blocks to end of PAGE_SIZE */
3015 (size < (__u64)pb.last_init_lblock * fs->blocksize) &&
3016 (pb.last_init_lblock / blkpg * blkpg != pb.last_init_lblock ||
3017 size < (__u64)(pb.last_init_lblock & ~(blkpg-1)) *
3018 fs->blocksize))
3019 bad_size = 3;
3020 else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
3021 size > ext2_max_sizes[fs->super->s_log_block_size])
3022 /* too big for a direct/indirect-mapped file */
3023 bad_size = 4;
3024 else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
3025 size >
3026 ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1))
3027 /* too big for an extent-based file - 32bit ee_block */
3028 bad_size = 6;
3029 }
3030 /* i_size for symlinks is checked elsewhere */
3031 if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
3032 /* Did inline_data set pctx->num earlier? */
3033 if (bad_size != 7)
3034 pctx->num = (pb.last_block + 1) * fs->blocksize;
3035 pctx->group = bad_size;
3036 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
3037 if (LINUX_S_ISDIR(inode->i_mode))
3038 pctx->num &= 0xFFFFFFFFULL;
3039 ext2fs_inode_size_set(fs, inode, pctx->num);
3040 if (EXT2_I_SIZE(inode) == 0 &&
3041 (inode->i_flags & EXT4_INLINE_DATA_FL)) {
3042 memset(inode->i_block, 0,
3043 sizeof(inode->i_block));
3044 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
3045 }
3046 dirty_inode++;
3047 }
3048 pctx->num = 0;
3049 }
3050 if (LINUX_S_ISREG(inode->i_mode) &&
3051 ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
3052 ctx->large_files++;
3053 if ((fs->super->s_creator_os == EXT2_OS_LINUX) &&
3054 ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) ||
3055 ((fs->super->s_feature_ro_compat &
3056 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) &&
3057 (inode->i_flags & EXT4_HUGE_FILE_FL) &&
3058 (inode->osd2.linux2.l_i_blocks_hi != 0)))) {
3059 pctx->num = pb.num_blocks;
3060 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
3061 inode->i_blocks = pb.num_blocks;
3062 inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32;
3063 dirty_inode++;
3064 }
3065 pctx->num = 0;
3066 }
3067
3068 if (ctx->dirs_to_hash && pb.is_dir &&
3069 !(ctx->lost_and_found && ctx->lost_and_found == ino) &&
3070 !(inode->i_flags & EXT2_INDEX_FL) &&
3071 ((inode->i_size / fs->blocksize) >= 3))
3072 e2fsck_rehash_dir_later(ctx, ino);
3073
3074 out:
3075 if (dirty_inode)
3076 e2fsck_write_inode(ctx, ino, inode, "check_blocks");
3077 }
3078
3079 #if 0
3080 /*
3081 * Helper function called by process block when an illegal block is
3082 * found. It returns a description about why the block is illegal
3083 */
3084 static char *describe_illegal_block(ext2_filsys fs, blk64_t block)
3085 {
3086 blk64_t super;
3087 int i;
3088 static char problem[80];
3089
3090 super = fs->super->s_first_data_block;
3091 strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
3092 if (block < super) {
3093 sprintf(problem, "< FIRSTBLOCK (%u)", super);
3094 return(problem);
3095 } else if (block >= ext2fs_blocks_count(fs->super)) {
3096 sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super));
3097 return(problem);
3098 }
3099 for (i = 0; i < fs->group_desc_count; i++) {
3100 if (block == super) {
3101 sprintf(problem, "is the superblock in group %d", i);
3102 break;
3103 }
3104 if (block > super &&
3105 block <= (super + fs->desc_blocks)) {
3106 sprintf(problem, "is in the group descriptors "
3107 "of group %d", i);
3108 break;
3109 }
3110 if (block == ext2fs_block_bitmap_loc(fs, i)) {
3111 sprintf(problem, "is the block bitmap of group %d", i);
3112 break;
3113 }
3114 if (block == ext2fs_inode_bitmap_loc(fs, i)) {
3115 sprintf(problem, "is the inode bitmap of group %d", i);
3116 break;
3117 }
3118 if (block >= ext2fs_inode_table_loc(fs, i) &&
3119 (block < ext2fs_inode_table_loc(fs, i)
3120 + fs->inode_blocks_per_group)) {
3121 sprintf(problem, "is in the inode table of group %d",
3122 i);
3123 break;
3124 }
3125 super += fs->super->s_blocks_per_group;
3126 }
3127 return(problem);
3128 }
3129 #endif
3130
3131 /*
3132 * This is a helper function for check_blocks().
3133 */
3134 static int process_block(ext2_filsys fs,
3135 blk64_t *block_nr,
3136 e2_blkcnt_t blockcnt,
3137 blk64_t ref_block EXT2FS_ATTR((unused)),
3138 int ref_offset EXT2FS_ATTR((unused)),
3139 void *priv_data)
3140 {
3141 struct process_block_struct *p;
3142 struct problem_context *pctx;
3143 blk64_t blk = *block_nr;
3144 int ret_code = 0;
3145 problem_t problem = 0;
3146 e2fsck_t ctx;
3147
3148 p = (struct process_block_struct *) priv_data;
3149 pctx = p->pctx;
3150 ctx = p->ctx;
3151
3152 /*
3153 * For a directory, add logical block zero for processing even if it's
3154 * not mapped or we'll be perennially stuck with broken "." and ".."
3155 * entries.
3156 */
3157 if (p->is_dir && blockcnt == 0 && blk == 0) {
3158 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino, 0, 0);
3159 if (pctx->errcode) {
3160 pctx->blk = blk;
3161 pctx->num = blockcnt;
3162 goto failed_add_dir_block;
3163 }
3164 p->last_db_block++;
3165 }
3166
3167 if (blk == 0)
3168 return 0;
3169
3170 #if 0
3171 printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
3172 blockcnt);
3173 #endif
3174
3175 /*
3176 * Simplistic fragmentation check. We merely require that the
3177 * file be contiguous. (Which can never be true for really
3178 * big files that are greater than a block group.)
3179 */
3180 if (p->previous_block && p->ino != EXT2_RESIZE_INO) {
3181 if (p->previous_block+1 != blk) {
3182 if (ctx->options & E2F_OPT_FRAGCHECK) {
3183 char type = '?';
3184
3185 if (p->is_dir)
3186 type = 'd';
3187 else if (p->is_reg)
3188 type = 'f';
3189
3190 printf(_("%6lu(%c): expecting %6lu "
3191 "got phys %6lu (blkcnt %lld)\n"),
3192 (unsigned long) pctx->ino, type,
3193 (unsigned long) p->previous_block+1,
3194 (unsigned long) blk,
3195 blockcnt);
3196 }
3197 p->fragmented = 1;
3198 }
3199 }
3200
3201 if (p->is_dir && blockcnt > (1 << (21 - fs->super->s_log_block_size)))
3202 problem = PR_1_TOOBIG_DIR;
3203 if (p->is_reg && p->num_blocks+1 >= p->max_blocks)
3204 problem = PR_1_TOOBIG_REG;
3205 if (!p->is_dir && !p->is_reg && blockcnt > 0)
3206 problem = PR_1_TOOBIG_SYMLINK;
3207
3208 if (blk < fs->super->s_first_data_block ||
3209 blk >= ext2fs_blocks_count(fs->super))
3210 problem = PR_1_ILLEGAL_BLOCK_NUM;
3211
3212 /*
3213 * If this IND/DIND/TIND block is squatting atop some critical metadata
3214 * (group descriptors, superblock, bitmap, inode table), any write to
3215 * "fix" mapping problems will destroy the metadata. We'll let pass 1b
3216 * fix that and restart fsck.
3217 */
3218 if (blockcnt < 0 &&
3219 p->ino != EXT2_RESIZE_INO &&
3220 ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk)) {
3221 pctx->blk = blk;
3222 fix_problem(ctx, PR_1_CRITICAL_METADATA_COLLISION, pctx);
3223 ctx->flags |= E2F_FLAG_RESTART_LATER;
3224 }
3225
3226 if (problem) {
3227 p->num_illegal_blocks++;
3228 /*
3229 * A bit of subterfuge here -- we're trying to fix a block
3230 * mapping, but the IND/DIND/TIND block could have collided
3231 * with some critical metadata. So, fix the in-core mapping so
3232 * iterate won't go insane, but return 0 instead of
3233 * BLOCK_CHANGED so that it won't write the remapping out to
3234 * our multiply linked block.
3235 *
3236 * Even if we previously determined that an *IND block
3237 * conflicts with critical metadata, we must still try to
3238 * iterate the *IND block as if it is an *IND block to find and
3239 * mark the blocks it points to. Better to be overly cautious
3240 * with the used_blocks map so that we don't move the *IND
3241 * block to a block that's really in use!
3242 */
3243 if (p->ino != EXT2_RESIZE_INO &&
3244 ref_block != 0 &&
3245 ext2fs_test_block_bitmap2(ctx->block_metadata_map,
3246 ref_block)) {
3247 *block_nr = 0;
3248 return 0;
3249 }
3250 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
3251 if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
3252 p->clear = 1;
3253 return BLOCK_ABORT;
3254 }
3255 if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
3256 p->suppress = 1;
3257 set_latch_flags(PR_LATCH_BLOCK,
3258 PRL_SUPPRESS, 0);
3259 }
3260 }
3261 pctx->blk = blk;
3262 pctx->blkcount = blockcnt;
3263 if (fix_problem(ctx, problem, pctx)) {
3264 blk = *block_nr = 0;
3265 ret_code = BLOCK_CHANGED;
3266 p->inode_modified = 1;
3267 /*
3268 * If the directory block is too big and is beyond the
3269 * end of the FS, don't bother trying to add it for
3270 * processing -- the kernel would never have created a
3271 * directory this large, and we risk an ENOMEM abort.
3272 * In any case, the toobig handler for extent-based
3273 * directories also doesn't feed toobig blocks to
3274 * pass 2.
3275 */
3276 if (problem == PR_1_TOOBIG_DIR)
3277 return ret_code;
3278 goto mark_dir;
3279 } else
3280 return 0;
3281 }
3282
3283 if (p->ino == EXT2_RESIZE_INO) {
3284 /*
3285 * The resize inode has already be sanity checked
3286 * during pass #0 (the superblock checks). All we
3287 * have to do is mark the double indirect block as
3288 * being in use; all of the other blocks are handled
3289 * by mark_table_blocks()).
3290 */
3291 if (blockcnt == BLOCK_COUNT_DIND)
3292 mark_block_used(ctx, blk);
3293 p->num_blocks++;
3294 } else if (!(ctx->fs->cluster_ratio_bits &&
3295 p->previous_block &&
3296 (EXT2FS_B2C(ctx->fs, blk) ==
3297 EXT2FS_B2C(ctx->fs, p->previous_block)) &&
3298 (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
3299 ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
3300 mark_block_used(ctx, blk);
3301 p->num_blocks++;
3302 } else if (has_unaligned_cluster_map(ctx, p->previous_block,
3303 p->last_block, blk, blockcnt)) {
3304 pctx->blk = blockcnt;
3305 pctx->blk2 = blk;
3306 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
3307 mark_block_used(ctx, blk);
3308 mark_block_used(ctx, blk);
3309 }
3310 if (blockcnt >= 0)
3311 p->last_block = blockcnt;
3312 p->previous_block = blk;
3313 mark_dir:
3314 if (p->is_dir && (blockcnt >= 0)) {
3315 while (++p->last_db_block < blockcnt) {
3316 pctx->errcode = ext2fs_add_dir_block2(fs->dblist,
3317 p->ino, 0,
3318 p->last_db_block);
3319 if (pctx->errcode) {
3320 pctx->blk = 0;
3321 pctx->num = p->last_db_block;
3322 goto failed_add_dir_block;
3323 }
3324 }
3325 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino,
3326 blk, blockcnt);
3327 if (pctx->errcode) {
3328 pctx->blk = blk;
3329 pctx->num = blockcnt;
3330 failed_add_dir_block:
3331 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3332 /* Should never get here */
3333 ctx->flags |= E2F_FLAG_ABORT;
3334 return BLOCK_ABORT;
3335 }
3336 }
3337 return ret_code;
3338 }
3339
3340 static int process_bad_block(ext2_filsys fs,
3341 blk64_t *block_nr,
3342 e2_blkcnt_t blockcnt,
3343 blk64_t ref_block EXT2FS_ATTR((unused)),
3344 int ref_offset EXT2FS_ATTR((unused)),
3345 void *priv_data)
3346 {
3347 struct process_block_struct *p;
3348 blk64_t blk = *block_nr;
3349 blk64_t first_block;
3350 dgrp_t i;
3351 struct problem_context *pctx;
3352 e2fsck_t ctx;
3353
3354 if (!blk)
3355 return 0;
3356
3357 p = (struct process_block_struct *) priv_data;
3358 ctx = p->ctx;
3359 pctx = p->pctx;
3360
3361 pctx->ino = EXT2_BAD_INO;
3362 pctx->blk = blk;
3363 pctx->blkcount = blockcnt;
3364
3365 if ((blk < fs->super->s_first_data_block) ||
3366 (blk >= ext2fs_blocks_count(fs->super))) {
3367 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
3368 *block_nr = 0;
3369 return BLOCK_CHANGED;
3370 } else
3371 return 0;
3372 }
3373
3374 if (blockcnt < 0) {
3375 if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) {
3376 p->bbcheck = 1;
3377 if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
3378 *block_nr = 0;
3379 return BLOCK_CHANGED;
3380 }
3381 } else if (ext2fs_test_block_bitmap2(ctx->block_found_map,
3382 blk)) {
3383 p->bbcheck = 1;
3384 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
3385 pctx)) {
3386 *block_nr = 0;
3387 return BLOCK_CHANGED;
3388 }
3389 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3390 return BLOCK_ABORT;
3391 } else
3392 mark_block_used(ctx, blk);
3393 return 0;
3394 }
3395 #if 0
3396 printf ("DEBUG: Marking %u as bad.\n", blk);
3397 #endif
3398 ctx->fs_badblocks_count++;
3399 /*
3400 * If the block is not used, then mark it as used and return.
3401 * If it is already marked as found, this must mean that
3402 * there's an overlap between the filesystem table blocks
3403 * (bitmaps and inode table) and the bad block list.
3404 */
3405 if (!ext2fs_test_block_bitmap2(ctx->block_found_map, blk)) {
3406 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
3407 return 0;
3408 }
3409 /*
3410 * Try to find the where the filesystem block was used...
3411 */
3412 first_block = fs->super->s_first_data_block;
3413
3414 for (i = 0; i < fs->group_desc_count; i++ ) {
3415 pctx->group = i;
3416 pctx->blk = blk;
3417 if (!ext2fs_bg_has_super(fs, i))
3418 goto skip_super;
3419 if (blk == first_block) {
3420 if (i == 0) {
3421 if (fix_problem(ctx,
3422 PR_1_BAD_PRIMARY_SUPERBLOCK,
3423 pctx)) {
3424 *block_nr = 0;
3425 return BLOCK_CHANGED;
3426 }
3427 return 0;
3428 }
3429 fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
3430 return 0;
3431 }
3432 if ((blk > first_block) &&
3433 (blk <= first_block + fs->desc_blocks)) {
3434 if (i == 0) {
3435 pctx->blk = *block_nr;
3436 if (fix_problem(ctx,
3437 PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
3438 *block_nr = 0;
3439 return BLOCK_CHANGED;
3440 }
3441 return 0;
3442 }
3443 fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
3444 return 0;
3445 }
3446 skip_super:
3447 if (blk == ext2fs_block_bitmap_loc(fs, i)) {
3448 if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
3449 ctx->invalid_block_bitmap_flag[i]++;
3450 ctx->invalid_bitmaps++;
3451 }
3452 return 0;
3453 }
3454 if (blk == ext2fs_inode_bitmap_loc(fs, i)) {
3455 if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
3456 ctx->invalid_inode_bitmap_flag[i]++;
3457 ctx->invalid_bitmaps++;
3458 }
3459 return 0;
3460 }
3461 if ((blk >= ext2fs_inode_table_loc(fs, i)) &&
3462 (blk < (ext2fs_inode_table_loc(fs, i) +
3463 fs->inode_blocks_per_group))) {
3464 /*
3465 * If there are bad blocks in the inode table,
3466 * the inode scan code will try to do
3467 * something reasonable automatically.
3468 */
3469 return 0;
3470 }
3471 first_block += fs->super->s_blocks_per_group;
3472 }
3473 /*
3474 * If we've gotten to this point, then the only
3475 * possibility is that the bad block inode meta data
3476 * is using a bad block.
3477 */
3478 if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
3479 (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
3480 (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
3481 p->bbcheck = 1;
3482 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
3483 *block_nr = 0;
3484 return BLOCK_CHANGED;
3485 }
3486 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3487 return BLOCK_ABORT;
3488 return 0;
3489 }
3490
3491 pctx->group = -1;
3492
3493 /* Warn user that the block wasn't claimed */
3494 fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
3495
3496 return 0;
3497 }
3498
3499 static void new_table_block(e2fsck_t ctx, blk64_t first_block, dgrp_t group,
3500 const char *name, int num, blk64_t *new_block)
3501 {
3502 ext2_filsys fs = ctx->fs;
3503 dgrp_t last_grp;
3504 blk64_t old_block = *new_block;
3505 blk64_t last_block;
3506 dgrp_t flexbg;
3507 unsigned flexbg_size;
3508 int i, is_flexbg;
3509 char *buf;
3510 struct problem_context pctx;
3511
3512 clear_problem_context(&pctx);
3513
3514 pctx.group = group;
3515 pctx.blk = old_block;
3516 pctx.str = name;
3517
3518 /*
3519 * For flex_bg filesystems, first try to allocate the metadata
3520 * within the flex_bg, and if that fails then try finding the
3521 * space anywhere in the filesystem.
3522 */
3523 is_flexbg = EXT2_HAS_INCOMPAT_FEATURE(fs->super,
3524 EXT4_FEATURE_INCOMPAT_FLEX_BG);
3525 if (is_flexbg) {
3526 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
3527 flexbg = group / flexbg_size;
3528 first_block = ext2fs_group_first_block2(fs,
3529 flexbg_size * flexbg);
3530 last_grp = group | (flexbg_size - 1);
3531 if (last_grp >= fs->group_desc_count)
3532 last_grp = fs->group_desc_count - 1;
3533 last_block = ext2fs_group_last_block2(fs, last_grp);
3534 } else
3535 last_block = ext2fs_group_last_block2(fs, group);
3536 pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block,
3537 num, ctx->block_found_map,
3538 new_block);
3539 if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL))
3540 pctx.errcode = ext2fs_get_free_blocks2(fs,
3541 fs->super->s_first_data_block,
3542 ext2fs_blocks_count(fs->super),
3543 num, ctx->block_found_map, new_block);
3544 if (pctx.errcode) {
3545 pctx.num = num;
3546 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
3547 ext2fs_unmark_valid(fs);
3548 ctx->flags |= E2F_FLAG_ABORT;
3549 return;
3550 }
3551 pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
3552 if (pctx.errcode) {
3553 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
3554 ext2fs_unmark_valid(fs);
3555 ctx->flags |= E2F_FLAG_ABORT;
3556 return;
3557 }
3558 ext2fs_mark_super_dirty(fs);
3559 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
3560 pctx.blk2 = *new_block;
3561 fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
3562 PR_1_RELOC_TO), &pctx);
3563 pctx.blk2 = 0;
3564 for (i = 0; i < num; i++) {
3565 pctx.blk = i;
3566 ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i);
3567 if (old_block) {
3568 pctx.errcode = io_channel_read_blk64(fs->io,
3569 old_block + i, 1, buf);
3570 if (pctx.errcode)
3571 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
3572 pctx.blk = (*new_block) + i;
3573 pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk,
3574 1, buf);
3575 } else {
3576 pctx.blk = (*new_block) + i;
3577 pctx.errcode = ext2fs_zero_blocks2(fs, pctx.blk, 1,
3578 NULL, NULL);
3579 }
3580
3581 if (pctx.errcode)
3582 fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
3583 }
3584 ext2fs_free_mem(&buf);
3585 }
3586
3587 /*
3588 * This routine gets called at the end of pass 1 if bad blocks are
3589 * detected in the superblock, group descriptors, inode_bitmaps, or
3590 * block bitmaps. At this point, all of the blocks have been mapped
3591 * out, so we can try to allocate new block(s) to replace the bad
3592 * blocks.
3593 */
3594 static void handle_fs_bad_blocks(e2fsck_t ctx)
3595 {
3596 ext2_filsys fs = ctx->fs;
3597 dgrp_t i;
3598 blk64_t first_block;
3599 blk64_t new_blk;
3600
3601 for (i = 0; i < fs->group_desc_count; i++) {
3602 first_block = ext2fs_group_first_block2(fs, i);
3603
3604 if (ctx->invalid_block_bitmap_flag[i]) {
3605 new_blk = ext2fs_block_bitmap_loc(fs, i);
3606 new_table_block(ctx, first_block, i, _("block bitmap"),
3607 1, &new_blk);
3608 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
3609 }
3610 if (ctx->invalid_inode_bitmap_flag[i]) {
3611 new_blk = ext2fs_inode_bitmap_loc(fs, i);
3612 new_table_block(ctx, first_block, i, _("inode bitmap"),
3613 1, &new_blk);
3614 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
3615 }
3616 if (ctx->invalid_inode_table_flag[i]) {
3617 new_blk = ext2fs_inode_table_loc(fs, i);
3618 new_table_block(ctx, first_block, i, _("inode table"),
3619 fs->inode_blocks_per_group,
3620 &new_blk);
3621 ext2fs_inode_table_loc_set(fs, i, new_blk);
3622 ctx->flags |= E2F_FLAG_RESTART;
3623 }
3624 }
3625 ctx->invalid_bitmaps = 0;
3626 }
3627
3628 /*
3629 * This routine marks all blocks which are used by the superblock,
3630 * group descriptors, inode bitmaps, and block bitmaps.
3631 */
3632 static void mark_table_blocks(e2fsck_t ctx)
3633 {
3634 ext2_filsys fs = ctx->fs;
3635 blk64_t b;
3636 dgrp_t i;
3637 unsigned int j;
3638 struct problem_context pctx;
3639
3640 clear_problem_context(&pctx);
3641
3642 for (i = 0; i < fs->group_desc_count; i++) {
3643 pctx.group = i;
3644
3645 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
3646 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_metadata_map);
3647
3648 /*
3649 * Mark the blocks used for the inode table
3650 */
3651 if (ext2fs_inode_table_loc(fs, i)) {
3652 for (j = 0, b = ext2fs_inode_table_loc(fs, i);
3653 j < fs->inode_blocks_per_group;
3654 j++, b++) {
3655 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
3656 b)) {
3657 pctx.blk = b;
3658 if (!ctx->invalid_inode_table_flag[i] &&
3659 fix_problem(ctx,
3660 PR_1_ITABLE_CONFLICT, &pctx)) {
3661 ctx->invalid_inode_table_flag[i]++;
3662 ctx->invalid_bitmaps++;
3663 }
3664 } else {
3665 ext2fs_mark_block_bitmap2(
3666 ctx->block_found_map, b);
3667 ext2fs_mark_block_bitmap2(
3668 ctx->block_metadata_map, b);
3669 }
3670 }
3671 }
3672
3673 /*
3674 * Mark block used for the block bitmap
3675 */
3676 if (ext2fs_block_bitmap_loc(fs, i)) {
3677 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
3678 ext2fs_block_bitmap_loc(fs, i))) {
3679 pctx.blk = ext2fs_block_bitmap_loc(fs, i);
3680 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
3681 ctx->invalid_block_bitmap_flag[i]++;
3682 ctx->invalid_bitmaps++;
3683 }
3684 } else {
3685 ext2fs_mark_block_bitmap2(ctx->block_found_map,
3686 ext2fs_block_bitmap_loc(fs, i));
3687 ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
3688 ext2fs_block_bitmap_loc(fs, i));
3689 }
3690 }
3691 /*
3692 * Mark block used for the inode bitmap
3693 */
3694 if (ext2fs_inode_bitmap_loc(fs, i)) {
3695 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
3696 ext2fs_inode_bitmap_loc(fs, i))) {
3697 pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
3698 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
3699 ctx->invalid_inode_bitmap_flag[i]++;
3700 ctx->invalid_bitmaps++;
3701 }
3702 } else {
3703 ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
3704 ext2fs_inode_bitmap_loc(fs, i));
3705 ext2fs_mark_block_bitmap2(ctx->block_found_map,
3706 ext2fs_inode_bitmap_loc(fs, i));
3707 }
3708 }
3709 }
3710 }
3711
3712 /*
3713 * Thes subroutines short circuits ext2fs_get_blocks and
3714 * ext2fs_check_directory; we use them since we already have the inode
3715 * structure, so there's no point in letting the ext2fs library read
3716 * the inode again.
3717 */
3718 static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
3719 blk_t *blocks)
3720 {
3721 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
3722 int i;
3723
3724 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
3725 return EXT2_ET_CALLBACK_NOTHANDLED;
3726
3727 for (i=0; i < EXT2_N_BLOCKS; i++)
3728 blocks[i] = ctx->stashed_inode->i_block[i];
3729 return 0;
3730 }
3731
3732 static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
3733 struct ext2_inode *inode)
3734 {
3735 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
3736
3737 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
3738 return EXT2_ET_CALLBACK_NOTHANDLED;
3739 *inode = *ctx->stashed_inode;
3740 return 0;
3741 }
3742
3743 static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
3744 struct ext2_inode *inode)
3745 {
3746 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
3747
3748 if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
3749 (inode != ctx->stashed_inode))
3750 *ctx->stashed_inode = *inode;
3751 return EXT2_ET_CALLBACK_NOTHANDLED;
3752 }
3753
3754 static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
3755 {
3756 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
3757
3758 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
3759 return EXT2_ET_CALLBACK_NOTHANDLED;
3760
3761 if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
3762 return EXT2_ET_NO_DIRECTORY;
3763 return 0;
3764 }
3765
3766 static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal,
3767 blk64_t *ret)
3768 {
3769 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
3770 errcode_t retval;
3771 blk64_t new_block;
3772
3773 if (ctx->block_found_map) {
3774 retval = ext2fs_new_block2(fs, goal, ctx->block_found_map,
3775 &new_block);
3776 if (retval)
3777 return retval;
3778 if (fs->block_map) {
3779 ext2fs_mark_block_bitmap2(fs->block_map, new_block);
3780 ext2fs_mark_bb_dirty(fs);
3781 }
3782 } else {
3783 if (!fs->block_map) {
3784 retval = ext2fs_read_block_bitmap(fs);
3785 if (retval)
3786 return retval;
3787 }
3788
3789 retval = ext2fs_new_block2(fs, goal, fs->block_map, &new_block);
3790 if (retval)
3791 return retval;
3792 }
3793
3794 *ret = new_block;
3795 return (0);
3796 }
3797
3798 static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
3799 {
3800 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
3801
3802 /* Never free a critical metadata block */
3803 if (ctx->block_found_map &&
3804 ctx->block_metadata_map &&
3805 inuse < 0 &&
3806 ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk))
3807 return;
3808
3809 if (ctx->block_found_map) {
3810 if (inuse > 0)
3811 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
3812 else
3813 ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk);
3814 }
3815 }
3816
3817 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts)
3818 {
3819 ext2_filsys fs = ctx->fs;
3820
3821 if (use_shortcuts) {
3822 fs->get_blocks = pass1_get_blocks;
3823 fs->check_directory = pass1_check_directory;
3824 fs->read_inode = pass1_read_inode;
3825 fs->write_inode = pass1_write_inode;
3826 ctx->stashed_ino = 0;
3827 } else {
3828 fs->get_blocks = 0;
3829 fs->check_directory = 0;
3830 fs->read_inode = 0;
3831 fs->write_inode = 0;
3832 }
3833 }
3834
3835 void e2fsck_intercept_block_allocations(e2fsck_t ctx)
3836 {
3837 ext2fs_set_alloc_block_callback(ctx->fs, e2fsck_get_alloc_block, 0);
3838 ext2fs_set_block_alloc_stats_callback(ctx->fs,
3839 e2fsck_block_alloc_stats, 0);
3840 }
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