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[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 #undef DEBUG
60
61 static int process_block(ext2_filsys fs, blk64_t *blocknr,
62 e2_blkcnt_t blockcnt, blk64_t ref_blk,
63 int ref_offset, void *priv_data);
64 static int process_bad_block(ext2_filsys fs, blk64_t *block_nr,
65 e2_blkcnt_t blockcnt, blk64_t ref_blk,
66 int ref_offset, void *priv_data);
67 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
68 char *block_buf);
69 static void mark_table_blocks(e2fsck_t ctx);
70 static void alloc_bb_map(e2fsck_t ctx);
71 static void alloc_imagic_map(e2fsck_t ctx);
72 static void mark_inode_bad(e2fsck_t ctx, ino_t ino);
73 static void add_encrypted_dir(e2fsck_t ctx, ino_t ino);
74 static void handle_fs_bad_blocks(e2fsck_t ctx);
75 static void process_inodes(e2fsck_t ctx, char *block_buf);
76 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b);
77 static errcode_t scan_callback(ext2_filsys fs, ext2_inode_scan scan,
78 dgrp_t group, void * priv_data);
79 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
80 char *block_buf, int adjust_sign);
81 /* static char *describe_illegal_block(ext2_filsys fs, blk64_t block); */
82
83 struct process_block_struct {
84 ext2_ino_t ino;
85 unsigned is_dir:1, is_reg:1, clear:1, suppress:1,
86 fragmented:1, compressed:1, bbcheck:1,
87 inode_modified:1;
88 blk64_t num_blocks;
89 blk64_t max_blocks;
90 e2_blkcnt_t last_block;
91 e2_blkcnt_t last_init_lblock;
92 e2_blkcnt_t last_db_block;
93 int num_illegal_blocks;
94 blk64_t previous_block;
95 struct ext2_inode *inode;
96 struct problem_context *pctx;
97 ext2fs_block_bitmap fs_meta_blocks;
98 e2fsck_t ctx;
99 region_t region;
100 struct extent_tree_info eti;
101 };
102
103 struct process_inode_block {
104 ext2_ino_t ino;
105 struct ext2_inode inode;
106 };
107
108 struct scan_callback_struct {
109 e2fsck_t ctx;
110 char *block_buf;
111 };
112
113 /*
114 * For the inodes to process list.
115 */
116 static struct process_inode_block *inodes_to_process;
117 static int process_inode_count;
118
119 static __u64 ext2_max_sizes[EXT2_MAX_BLOCK_LOG_SIZE -
120 EXT2_MIN_BLOCK_LOG_SIZE + 1];
121
122 /*
123 * Free all memory allocated by pass1 in preparation for restarting
124 * things.
125 */
126 static void unwind_pass1(ext2_filsys fs EXT2FS_ATTR((unused)))
127 {
128 ext2fs_free_mem(&inodes_to_process);
129 inodes_to_process = 0;
130 }
131
132 /*
133 * Check to make sure a device inode is real. Returns 1 if the device
134 * checks out, 0 if not.
135 *
136 * Note: this routine is now also used to check FIFO's and Sockets,
137 * since they have the same requirement; the i_block fields should be
138 * zero.
139 */
140 int e2fsck_pass1_check_device_inode(ext2_filsys fs EXT2FS_ATTR((unused)),
141 struct ext2_inode *inode)
142 {
143 int i;
144
145 /*
146 * If the index flag is set, then this is a bogus
147 * device/fifo/socket
148 */
149 if (inode->i_flags & EXT2_INDEX_FL)
150 return 0;
151
152 /*
153 * We should be able to do the test below all the time, but
154 * because the kernel doesn't forcibly clear the device
155 * inode's additional i_block fields, there are some rare
156 * occasions when a legitimate device inode will have non-zero
157 * additional i_block fields. So for now, we only complain
158 * when the immutable flag is set, which should never happen
159 * for devices. (And that's when the problem is caused, since
160 * you can't set or clear immutable flags for devices.) Once
161 * the kernel has been fixed we can change this...
162 */
163 if (inode->i_flags & (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)) {
164 for (i=4; i < EXT2_N_BLOCKS; i++)
165 if (inode->i_block[i])
166 return 0;
167 }
168 return 1;
169 }
170
171 /*
172 * Check to make sure a symlink inode is real. Returns 1 if the symlink
173 * checks out, 0 if not.
174 */
175 int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino,
176 struct ext2_inode *inode, char *buf)
177 {
178 unsigned int len;
179 int i;
180 blk64_t blocks;
181 ext2_extent_handle_t handle;
182 struct ext2_extent_info info;
183 struct ext2fs_extent extent;
184
185 if ((inode->i_size_high || inode->i_size == 0) ||
186 (inode->i_flags & EXT2_INDEX_FL))
187 return 0;
188
189 if (inode->i_flags & EXT4_EXTENTS_FL) {
190 if (inode->i_flags & EXT4_INLINE_DATA_FL)
191 return 0;
192 if (inode->i_size > fs->blocksize)
193 return 0;
194 if (ext2fs_extent_open2(fs, ino, inode, &handle))
195 return 0;
196 i = 0;
197 if (ext2fs_extent_get_info(handle, &info) ||
198 (info.num_entries != 1) ||
199 (info.max_depth != 0))
200 goto exit_extent;
201 if (ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent) ||
202 (extent.e_lblk != 0) ||
203 (extent.e_len != 1) ||
204 (extent.e_pblk < fs->super->s_first_data_block) ||
205 (extent.e_pblk >= ext2fs_blocks_count(fs->super)))
206 goto exit_extent;
207 i = 1;
208 exit_extent:
209 ext2fs_extent_free(handle);
210 return i;
211 }
212
213 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
214 size_t inline_size;
215
216 if (ext2fs_inline_data_size(fs, ino, &inline_size))
217 return 0;
218 if (inode->i_size != inline_size)
219 return 0;
220
221 return 1;
222 }
223
224 blocks = ext2fs_inode_data_blocks2(fs, inode);
225 if (blocks) {
226 if (inode->i_flags & EXT4_INLINE_DATA_FL)
227 return 0;
228 if ((inode->i_size >= fs->blocksize) ||
229 (blocks != fs->blocksize >> 9) ||
230 (inode->i_block[0] < fs->super->s_first_data_block) ||
231 (inode->i_block[0] >= ext2fs_blocks_count(fs->super)))
232 return 0;
233
234 for (i = 1; i < EXT2_N_BLOCKS; i++)
235 if (inode->i_block[i])
236 return 0;
237
238 if (io_channel_read_blk64(fs->io, inode->i_block[0], 1, buf))
239 return 0;
240
241 if (inode->i_flags & EXT4_ENCRYPT_FL) {
242 len = ext2fs_le32_to_cpu(*((__u32 *)buf)) + 4;
243 } else {
244 len = strnlen(buf, fs->blocksize);
245 }
246 if (len == fs->blocksize)
247 return 0;
248 } else if (inode->i_flags & EXT4_INLINE_DATA_FL) {
249 char *inline_buf = NULL;
250 size_t inline_sz = 0;
251
252 if (ext2fs_inline_data_size(fs, ino, &inline_sz))
253 return 0;
254 if (inode->i_size != inline_sz)
255 return 0;
256 if (ext2fs_get_mem(inline_sz + 1, &inline_buf))
257 return 0;
258 i = 0;
259 if (ext2fs_inline_data_get(fs, ino, inode, inline_buf, NULL))
260 goto exit_inline;
261 inline_buf[inline_sz] = 0;
262 len = strnlen(inline_buf, inline_sz);
263 if (len != inline_sz)
264 goto exit_inline;
265 i = 1;
266 exit_inline:
267 ext2fs_free_mem(&inline_buf);
268 return i;
269 } else {
270 if (inode->i_size >= sizeof(inode->i_block))
271 return 0;
272
273 len = strnlen((char *)inode->i_block, sizeof(inode->i_block));
274 if (len == sizeof(inode->i_block))
275 return 0;
276 }
277 if (len != inode->i_size)
278 if ((inode->i_flags & EXT4_ENCRYPT_FL) == 0)
279 return 0;
280 return 1;
281 }
282
283 /*
284 * If the extents or inlinedata flags are set on the inode, offer to clear 'em.
285 */
286 #define BAD_SPECIAL_FLAGS (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)
287 static void check_extents_inlinedata(e2fsck_t ctx,
288 struct problem_context *pctx)
289 {
290 if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
291 return;
292
293 if (!fix_problem(ctx, PR_1_SPECIAL_EXTENTS_IDATA, pctx))
294 return;
295
296 pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
297 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
298 }
299 #undef BAD_SPECIAL_FLAGS
300
301 /*
302 * If the immutable (or append-only) flag is set on the inode, offer
303 * to clear it.
304 */
305 #define BAD_SPECIAL_FLAGS (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)
306 static void check_immutable(e2fsck_t ctx, struct problem_context *pctx)
307 {
308 if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
309 return;
310
311 if (!fix_problem(ctx, PR_1_SET_IMMUTABLE, pctx))
312 return;
313
314 pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
315 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
316 }
317
318 /*
319 * If device, fifo or socket, check size is zero -- if not offer to
320 * clear it
321 */
322 static void check_size(e2fsck_t ctx, struct problem_context *pctx)
323 {
324 struct ext2_inode *inode = pctx->inode;
325
326 if (EXT2_I_SIZE(inode) == 0)
327 return;
328
329 if (!fix_problem(ctx, PR_1_SET_NONZSIZE, pctx))
330 return;
331
332 ext2fs_inode_size_set(ctx->fs, inode, 0);
333 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
334 }
335
336 static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx)
337 {
338 struct ext2_super_block *sb = ctx->fs->super;
339 struct ext2_inode_large *inode;
340 struct ext2_ext_attr_entry *entry;
341 char *start, *header;
342 unsigned int storage_size, remain;
343 problem_t problem = 0;
344 region_t region = 0;
345
346 inode = (struct ext2_inode_large *) pctx->inode;
347 storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE -
348 inode->i_extra_isize;
349 header = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
350 inode->i_extra_isize;
351 start = header + sizeof(__u32);
352 entry = (struct ext2_ext_attr_entry *) start;
353
354 /* scan all entry's headers first */
355
356 /* take finish entry 0UL into account */
357 remain = storage_size - sizeof(__u32);
358
359 region = region_create(0, storage_size);
360 if (!region) {
361 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
362 problem = 0;
363 ctx->flags |= E2F_FLAG_ABORT;
364 return;
365 }
366 if (region_allocate(region, 0, sizeof(__u32))) {
367 problem = PR_1_INODE_EA_ALLOC_COLLISION;
368 goto fix;
369 }
370
371 while (remain >= sizeof(struct ext2_ext_attr_entry) &&
372 !EXT2_EXT_IS_LAST_ENTRY(entry)) {
373 __u32 hash;
374
375 if (region_allocate(region, (char *)entry - (char *)header,
376 EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
377 problem = PR_1_INODE_EA_ALLOC_COLLISION;
378 goto fix;
379 }
380
381 /* header eats this space */
382 remain -= sizeof(struct ext2_ext_attr_entry);
383
384 /* is attribute name valid? */
385 if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) {
386 pctx->num = entry->e_name_len;
387 problem = PR_1_ATTR_NAME_LEN;
388 goto fix;
389 }
390
391 /* attribute len eats this space */
392 remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
393
394 /* check value size */
395 if (entry->e_value_size > remain) {
396 pctx->num = entry->e_value_size;
397 problem = PR_1_ATTR_VALUE_SIZE;
398 goto fix;
399 }
400
401 /* e_value_block must be 0 in inode's ea */
402 if (entry->e_value_block != 0) {
403 pctx->num = entry->e_value_block;
404 problem = PR_1_ATTR_VALUE_BLOCK;
405 goto fix;
406 }
407
408 if (entry->e_value_size &&
409 region_allocate(region, sizeof(__u32) + entry->e_value_offs,
410 EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
411 problem = PR_1_INODE_EA_ALLOC_COLLISION;
412 goto fix;
413 }
414
415 hash = ext2fs_ext_attr_hash_entry(entry,
416 start + entry->e_value_offs);
417
418 /* e_hash may be 0 in older inode's ea */
419 if (entry->e_hash != 0 && entry->e_hash != hash) {
420 pctx->num = entry->e_hash;
421 problem = PR_1_ATTR_HASH;
422 goto fix;
423 }
424
425 remain -= entry->e_value_size;
426
427 entry = EXT2_EXT_ATTR_NEXT(entry);
428 }
429
430 if (region_allocate(region, (char *)entry - (char *)header,
431 sizeof(__u32))) {
432 problem = PR_1_INODE_EA_ALLOC_COLLISION;
433 goto fix;
434 }
435 fix:
436 if (region)
437 region_free(region);
438 /*
439 * it seems like a corruption. it's very unlikely we could repair
440 * EA(s) in automatic fashion -bzzz
441 */
442 if (problem == 0 || !fix_problem(ctx, problem, pctx))
443 return;
444
445 /* simply remove all possible EA(s) */
446 *((__u32 *)header) = 0UL;
447 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
448 EXT2_INODE_SIZE(sb), "pass1");
449 }
450
451 static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx)
452 {
453 struct ext2_super_block *sb = ctx->fs->super;
454 struct ext2_inode_large *inode;
455 __u32 *eamagic;
456 int min, max;
457
458 inode = (struct ext2_inode_large *) pctx->inode;
459 if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) {
460 /* this isn't large inode. so, nothing to check */
461 return;
462 }
463
464 #if 0
465 printf("inode #%u, i_extra_size %d\n", pctx->ino,
466 inode->i_extra_isize);
467 #endif
468 /* i_extra_isize must cover i_extra_isize + i_checksum_hi at least */
469 min = sizeof(inode->i_extra_isize) + sizeof(inode->i_checksum_hi);
470 max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE;
471 /*
472 * For now we will allow i_extra_isize to be 0, but really
473 * implementations should never allow i_extra_isize to be 0
474 */
475 if (inode->i_extra_isize &&
476 (inode->i_extra_isize < min || inode->i_extra_isize > max)) {
477 if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
478 return;
479 inode->i_extra_isize = min;
480 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
481 EXT2_INODE_SIZE(sb), "pass1");
482 return;
483 }
484
485 eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
486 inode->i_extra_isize);
487 if (*eamagic == EXT2_EXT_ATTR_MAGIC) {
488 /* it seems inode has an extended attribute(s) in body */
489 check_ea_in_inode(ctx, pctx);
490 }
491 }
492
493 /*
494 * Check to see if the inode might really be a directory, despite i_mode
495 *
496 * This is a lot of complexity for something for which I'm not really
497 * convinced happens frequently in the wild. If for any reason this
498 * causes any problems, take this code out.
499 * [tytso:20070331.0827EDT]
500 */
501 static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
502 char *buf)
503 {
504 struct ext2_inode *inode = pctx->inode;
505 struct ext2_dir_entry *dirent;
506 errcode_t retval;
507 blk64_t blk;
508 unsigned int i, rec_len, not_device = 0;
509 int extent_fs;
510 int inlinedata_fs;
511
512 /*
513 * If the mode looks OK, we believe it. If the first block in
514 * the i_block array is 0, this cannot be a directory. If the
515 * inode is extent-mapped, it is still the case that the latter
516 * cannot be 0 - the magic number in the extent header would make
517 * it nonzero.
518 */
519 if (LINUX_S_ISDIR(inode->i_mode) || LINUX_S_ISREG(inode->i_mode) ||
520 LINUX_S_ISLNK(inode->i_mode) || inode->i_block[0] == 0)
521 return;
522
523 /*
524 * Check the block numbers in the i_block array for validity:
525 * zero blocks are skipped (but the first one cannot be zero -
526 * see above), other blocks are checked against the first and
527 * max data blocks (from the the superblock) and against the
528 * block bitmap. Any invalid block found means this cannot be
529 * a directory.
530 *
531 * If there are non-zero blocks past the fourth entry, then
532 * this cannot be a device file: we remember that for the next
533 * check.
534 *
535 * For extent mapped files, we don't do any sanity checking:
536 * just try to get the phys block of logical block 0 and run
537 * with it.
538 *
539 * For inline data files, we just try to get the size of inline
540 * data. If it's true, we will treat it as a directory.
541 */
542
543 extent_fs = (ctx->fs->super->s_feature_incompat &
544 EXT3_FEATURE_INCOMPAT_EXTENTS);
545 inlinedata_fs = (ctx->fs->super->s_feature_incompat &
546 EXT4_FEATURE_INCOMPAT_INLINE_DATA);
547 if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL)) {
548 size_t size;
549 __u32 dotdot;
550 unsigned int rec_len;
551 struct ext2_dir_entry de;
552
553 if (ext2fs_inline_data_size(ctx->fs, pctx->ino, &size))
554 return;
555 /*
556 * If the size isn't a multiple of 4, it's probably not a
557 * directory??
558 */
559 if (size & 3)
560 return;
561 /*
562 * If the first 10 bytes don't look like a directory entry,
563 * it's probably not a directory.
564 */
565 memcpy(&dotdot, inode->i_block, sizeof(dotdot));
566 memcpy(&de, ((char *)inode->i_block) + EXT4_INLINE_DATA_DOTDOT_SIZE,
567 EXT2_DIR_REC_LEN(0));
568 dotdot = ext2fs_le32_to_cpu(dotdot);
569 de.inode = ext2fs_le32_to_cpu(de.inode);
570 de.rec_len = ext2fs_le16_to_cpu(de.rec_len);
571 ext2fs_get_rec_len(ctx->fs, &de, &rec_len);
572 if (dotdot >= ctx->fs->super->s_inodes_count ||
573 (dotdot < EXT2_FIRST_INO(ctx->fs->super) &&
574 dotdot != EXT2_ROOT_INO) ||
575 de.inode >= ctx->fs->super->s_inodes_count ||
576 (de.inode < EXT2_FIRST_INO(ctx->fs->super) &&
577 de.inode != 0) ||
578 rec_len > EXT4_MIN_INLINE_DATA_SIZE -
579 EXT4_INLINE_DATA_DOTDOT_SIZE)
580 return;
581 /* device files never have a "system.data" entry */
582 goto isdir;
583 } else if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) {
584 /* extent mapped */
585 if (ext2fs_bmap2(ctx->fs, pctx->ino, inode, 0, 0, 0, 0,
586 &blk))
587 return;
588 /* device files are never extent mapped */
589 not_device++;
590 } else {
591 for (i=0; i < EXT2_N_BLOCKS; i++) {
592 blk = inode->i_block[i];
593 if (!blk)
594 continue;
595 if (i >= 4)
596 not_device++;
597
598 if (blk < ctx->fs->super->s_first_data_block ||
599 blk >= ext2fs_blocks_count(ctx->fs->super) ||
600 ext2fs_fast_test_block_bitmap2(ctx->block_found_map,
601 blk))
602 return; /* Invalid block, can't be dir */
603 }
604 blk = inode->i_block[0];
605 }
606
607 /*
608 * If the mode says this is a device file and the i_links_count field
609 * is sane and we have not ruled it out as a device file previously,
610 * we declare it a device file, not a directory.
611 */
612 if ((LINUX_S_ISCHR(inode->i_mode) || LINUX_S_ISBLK(inode->i_mode)) &&
613 (inode->i_links_count == 1) && !not_device)
614 return;
615
616 /* read the first block */
617 ehandler_operation(_("reading directory block"));
618 retval = ext2fs_read_dir_block4(ctx->fs, blk, buf, 0, pctx->ino);
619 ehandler_operation(0);
620 if (retval)
621 return;
622
623 dirent = (struct ext2_dir_entry *) buf;
624 retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
625 if (retval)
626 return;
627 if ((ext2fs_dirent_name_len(dirent) != 1) ||
628 (dirent->name[0] != '.') ||
629 (dirent->inode != pctx->ino) ||
630 (rec_len < 12) ||
631 (rec_len % 4) ||
632 (rec_len >= ctx->fs->blocksize - 12))
633 return;
634
635 dirent = (struct ext2_dir_entry *) (buf + rec_len);
636 retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
637 if (retval)
638 return;
639 if ((ext2fs_dirent_name_len(dirent) != 2) ||
640 (dirent->name[0] != '.') ||
641 (dirent->name[1] != '.') ||
642 (rec_len < 12) ||
643 (rec_len % 4))
644 return;
645
646 isdir:
647 if (fix_problem(ctx, PR_1_TREAT_AS_DIRECTORY, pctx)) {
648 inode->i_mode = (inode->i_mode & 07777) | LINUX_S_IFDIR;
649 e2fsck_write_inode_full(ctx, pctx->ino, inode,
650 EXT2_INODE_SIZE(ctx->fs->super),
651 "check_is_really_dir");
652 }
653 }
654
655 void e2fsck_setup_tdb_icount(e2fsck_t ctx, int flags,
656 ext2_icount_t *ret)
657 {
658 unsigned int threshold;
659 ext2_ino_t num_dirs;
660 errcode_t retval;
661 char *tdb_dir;
662 int enable;
663
664 *ret = 0;
665
666 profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
667 &tdb_dir);
668 profile_get_uint(ctx->profile, "scratch_files",
669 "numdirs_threshold", 0, 0, &threshold);
670 profile_get_boolean(ctx->profile, "scratch_files",
671 "icount", 0, 1, &enable);
672
673 retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
674 if (retval)
675 num_dirs = 1024; /* Guess */
676
677 if (!enable || !tdb_dir || access(tdb_dir, W_OK) ||
678 (threshold && num_dirs <= threshold))
679 return;
680
681 retval = ext2fs_create_icount_tdb(ctx->fs, tdb_dir, flags, ret);
682 if (retval)
683 *ret = 0;
684 }
685
686 static errcode_t recheck_bad_inode_checksum(ext2_filsys fs, ext2_ino_t ino,
687 e2fsck_t ctx,
688 struct problem_context *pctx)
689 {
690 errcode_t retval;
691 struct ext2_inode_large inode;
692
693 /*
694 * Reread inode. If we don't see checksum error, then this inode
695 * has been fixed elsewhere.
696 */
697 ctx->stashed_ino = 0;
698 retval = ext2fs_read_inode_full(fs, ino, (struct ext2_inode *)&inode,
699 sizeof(inode));
700 if (retval && retval != EXT2_ET_INODE_CSUM_INVALID)
701 return retval;
702 if (!retval)
703 return 0;
704
705 /*
706 * Checksum still doesn't match. That implies that the inode passes
707 * all the sanity checks, so maybe the checksum is simply corrupt.
708 * See if the user will go for fixing that.
709 */
710 if (!fix_problem(ctx, PR_1_INODE_ONLY_CSUM_INVALID, pctx))
711 return 0;
712
713 retval = ext2fs_write_inode_full(fs, ino, (struct ext2_inode *)&inode,
714 sizeof(inode));
715 return retval;
716 }
717
718 static void reserve_block_for_root_repair(e2fsck_t ctx)
719 {
720 blk64_t blk = 0;
721 errcode_t err;
722 ext2_filsys fs = ctx->fs;
723
724 ctx->root_repair_block = 0;
725 if (ext2fs_test_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO))
726 return;
727
728 err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
729 if (err)
730 return;
731 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
732 ctx->root_repair_block = blk;
733 }
734
735 static void reserve_block_for_lnf_repair(e2fsck_t ctx)
736 {
737 blk64_t blk = 0;
738 errcode_t err;
739 ext2_filsys fs = ctx->fs;
740 static const char name[] = "lost+found";
741 ext2_ino_t ino;
742
743 ctx->lnf_repair_block = 0;
744 if (!ext2fs_lookup(fs, EXT2_ROOT_INO, name, sizeof(name)-1, 0, &ino))
745 return;
746
747 err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
748 if (err)
749 return;
750 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
751 ctx->lnf_repair_block = blk;
752 }
753
754 static errcode_t get_inline_data_ea_size(ext2_filsys fs, ext2_ino_t ino,
755 size_t *sz)
756 {
757 void *p;
758 struct ext2_xattr_handle *handle;
759 errcode_t retval;
760
761 retval = ext2fs_xattrs_open(fs, ino, &handle);
762 if (retval)
763 return retval;
764
765 retval = ext2fs_xattrs_read(handle);
766 if (retval)
767 goto err;
768
769 retval = ext2fs_xattr_get(handle, "system.data", &p, sz);
770 if (retval)
771 goto err;
772 ext2fs_free_mem(&p);
773 err:
774 (void) ext2fs_xattrs_close(&handle);
775 return retval;
776 }
777
778 static void finish_processing_inode(e2fsck_t ctx, ext2_ino_t ino,
779 struct problem_context *pctx,
780 int failed_csum)
781 {
782 if (!failed_csum)
783 return;
784
785 /*
786 * If the inode failed the checksum and the user didn't
787 * clear the inode, test the checksum again -- if it still
788 * fails, ask the user if the checksum should be corrected.
789 */
790 pctx->errcode = recheck_bad_inode_checksum(ctx->fs, ino, ctx, pctx);
791 if (pctx->errcode)
792 ctx->flags |= E2F_FLAG_ABORT;
793 }
794 #define FINISH_INODE_LOOP(ctx, ino, pctx, failed_csum) \
795 do { \
796 finish_processing_inode((ctx), (ino), (pctx), (failed_csum)); \
797 if ((ctx)->flags & E2F_FLAG_ABORT) \
798 return; \
799 } while (0)
800
801 static int could_be_block_map(ext2_filsys fs, struct ext2_inode *inode)
802 {
803 __u32 x;
804 int i;
805
806 for (i = 0; i < EXT2_N_BLOCKS; i++) {
807 x = inode->i_block[i];
808 #ifdef WORDS_BIGENDIAN
809 x = ext2fs_swab32(x);
810 #endif
811 if (x >= ext2fs_blocks_count(fs->super))
812 return 0;
813 }
814
815 return 1;
816 }
817
818 /*
819 * Figure out what to do with an inode that has both extents and inline data
820 * inode flags set. Returns -1 if we decide to erase the inode, 0 otherwise.
821 */
822 static int fix_inline_data_extents_file(e2fsck_t ctx,
823 ext2_ino_t ino,
824 struct ext2_inode *inode,
825 int inode_size,
826 struct problem_context *pctx)
827 {
828 size_t max_inline_ea_size;
829 ext2_filsys fs = ctx->fs;
830 int dirty = 0;
831
832 /* Both feature flags not set? Just run the regular checks */
833 if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super,
834 EXT3_FEATURE_INCOMPAT_EXTENTS) &&
835 !EXT2_HAS_INCOMPAT_FEATURE(fs->super,
836 EXT4_FEATURE_INCOMPAT_INLINE_DATA))
837 return 0;
838
839 /* Clear both flags if it's a special file */
840 if (LINUX_S_ISCHR(inode->i_mode) ||
841 LINUX_S_ISBLK(inode->i_mode) ||
842 LINUX_S_ISFIFO(inode->i_mode) ||
843 LINUX_S_ISSOCK(inode->i_mode)) {
844 check_extents_inlinedata(ctx, pctx);
845 return 0;
846 }
847
848 /* If it looks like an extent tree, try to clear inlinedata */
849 if (ext2fs_extent_header_verify(inode->i_block,
850 sizeof(inode->i_block)) == 0 &&
851 fix_problem(ctx, PR_1_CLEAR_INLINE_DATA_FOR_EXTENT, pctx)) {
852 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
853 dirty = 1;
854 goto out;
855 }
856
857 /* If it looks short enough to be inline data, try to clear extents */
858 if (inode_size > EXT2_GOOD_OLD_INODE_SIZE)
859 max_inline_ea_size = inode_size -
860 (EXT2_GOOD_OLD_INODE_SIZE +
861 ((struct ext2_inode_large *)inode)->i_extra_isize);
862 else
863 max_inline_ea_size = 0;
864 if (EXT2_I_SIZE(inode) <
865 EXT4_MIN_INLINE_DATA_SIZE + max_inline_ea_size &&
866 fix_problem(ctx, PR_1_CLEAR_EXTENT_FOR_INLINE_DATA, pctx)) {
867 inode->i_flags &= ~EXT4_EXTENTS_FL;
868 dirty = 1;
869 goto out;
870 }
871
872 /*
873 * Too big for inline data, but no evidence of extent tree -
874 * maybe it's a block map file? If the mappings all look valid?
875 */
876 if (could_be_block_map(fs, inode) &&
877 fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_FLAGS, pctx)) {
878 #ifdef WORDS_BIGENDIAN
879 int i;
880
881 for (i = 0; i < EXT2_N_BLOCKS; i++)
882 inode->i_block[i] = ext2fs_swab32(inode->i_block[i]);
883 #endif
884
885 inode->i_flags &= ~(EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL);
886 dirty = 1;
887 goto out;
888 }
889
890 /* Oh well, just clear the busted inode. */
891 if (fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_INODE, pctx)) {
892 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
893 return -1;
894 }
895
896 out:
897 if (dirty)
898 e2fsck_write_inode(ctx, ino, inode, "pass1");
899
900 return 0;
901 }
902
903 static void pass1_readahead(e2fsck_t ctx, dgrp_t *group, ext2_ino_t *next_ino)
904 {
905 ext2_ino_t inodes_in_group = 0, inodes_per_block, inodes_per_buffer;
906 dgrp_t start = *group, grp;
907 blk64_t blocks_to_read = 0;
908 errcode_t err = EXT2_ET_INVALID_ARGUMENT;
909
910 if (ctx->readahead_kb == 0)
911 goto out;
912
913 /* Keep iterating groups until we have enough to readahead */
914 inodes_per_block = EXT2_INODES_PER_BLOCK(ctx->fs->super);
915 for (grp = start; grp < ctx->fs->group_desc_count; grp++) {
916 if (ext2fs_bg_flags_test(ctx->fs, grp, EXT2_BG_INODE_UNINIT))
917 continue;
918 inodes_in_group = ctx->fs->super->s_inodes_per_group -
919 ext2fs_bg_itable_unused(ctx->fs, grp);
920 blocks_to_read += (inodes_in_group + inodes_per_block - 1) /
921 inodes_per_block;
922 if (blocks_to_read * ctx->fs->blocksize >
923 ctx->readahead_kb * 1024)
924 break;
925 }
926
927 err = e2fsck_readahead(ctx->fs, E2FSCK_READA_ITABLE, start,
928 grp - start + 1);
929 if (err == EAGAIN) {
930 ctx->readahead_kb /= 2;
931 err = 0;
932 }
933
934 out:
935 if (err) {
936 /* Error; disable itable readahead */
937 *group = ctx->fs->group_desc_count;
938 *next_ino = ctx->fs->super->s_inodes_count;
939 } else {
940 /*
941 * Don't do more readahead until we've reached the first inode
942 * of the last inode scan buffer block for the last group.
943 */
944 *group = grp + 1;
945 inodes_per_buffer = (ctx->inode_buffer_blocks ?
946 ctx->inode_buffer_blocks :
947 EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS) *
948 ctx->fs->blocksize /
949 EXT2_INODE_SIZE(ctx->fs->super);
950 inodes_in_group--;
951 *next_ino = inodes_in_group -
952 (inodes_in_group % inodes_per_buffer) + 1 +
953 (grp * ctx->fs->super->s_inodes_per_group);
954 }
955 }
956
957 void e2fsck_pass1(e2fsck_t ctx)
958 {
959 int i;
960 __u64 max_sizes;
961 ext2_filsys fs = ctx->fs;
962 ext2_ino_t ino = 0;
963 struct ext2_inode *inode = NULL;
964 ext2_inode_scan scan = NULL;
965 char *block_buf = NULL;
966 #ifdef RESOURCE_TRACK
967 struct resource_track rtrack;
968 #endif
969 unsigned char frag, fsize;
970 struct problem_context pctx;
971 struct scan_callback_struct scan_struct;
972 struct ext2_super_block *sb = ctx->fs->super;
973 const char *old_op;
974 unsigned int save_type;
975 int imagic_fs, extent_fs, inlinedata_fs;
976 int low_dtime_check = 1;
977 int inode_size = EXT2_INODE_SIZE(fs->super);
978 int failed_csum = 0;
979 ext2_ino_t ino_threshold = 0;
980 dgrp_t ra_group = 0;
981
982 init_resource_track(&rtrack, ctx->fs->io);
983 clear_problem_context(&pctx);
984
985 /* If we can do readahead, figure out how many groups to pull in. */
986 if (!e2fsck_can_readahead(ctx->fs))
987 ctx->readahead_kb = 0;
988 else if (ctx->readahead_kb == ~0ULL)
989 ctx->readahead_kb = e2fsck_guess_readahead(ctx->fs);
990 pass1_readahead(ctx, &ra_group, &ino_threshold);
991
992 if (!(ctx->options & E2F_OPT_PREEN))
993 fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
994
995 if ((fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) &&
996 !(ctx->options & E2F_OPT_NO)) {
997 if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
998 ctx->dirs_to_hash = 0;
999 }
1000
1001 #ifdef MTRACE
1002 mtrace_print("Pass 1");
1003 #endif
1004
1005 #define EXT2_BPP(bits) (1ULL << ((bits) - 2))
1006
1007 for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
1008 max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
1009 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
1010 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
1011 max_sizes = (max_sizes * (1UL << i));
1012 ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
1013 }
1014 #undef EXT2_BPP
1015
1016 imagic_fs = (sb->s_feature_compat & EXT2_FEATURE_COMPAT_IMAGIC_INODES);
1017 extent_fs = (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS);
1018 inlinedata_fs = (sb->s_feature_incompat &
1019 EXT4_FEATURE_INCOMPAT_INLINE_DATA);
1020
1021 /*
1022 * Allocate bitmaps structures
1023 */
1024 pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("in-use inode map"),
1025 EXT2FS_BMAP64_RBTREE,
1026 "inode_used_map",
1027 &ctx->inode_used_map);
1028 if (pctx.errcode) {
1029 pctx.num = 1;
1030 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1031 ctx->flags |= E2F_FLAG_ABORT;
1032 return;
1033 }
1034 pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1035 _("directory inode map"),
1036 EXT2FS_BMAP64_AUTODIR,
1037 "inode_dir_map", &ctx->inode_dir_map);
1038 if (pctx.errcode) {
1039 pctx.num = 2;
1040 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1041 ctx->flags |= E2F_FLAG_ABORT;
1042 return;
1043 }
1044 pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1045 _("regular file inode map"), EXT2FS_BMAP64_RBTREE,
1046 "inode_reg_map", &ctx->inode_reg_map);
1047 if (pctx.errcode) {
1048 pctx.num = 6;
1049 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1050 ctx->flags |= E2F_FLAG_ABORT;
1051 return;
1052 }
1053 pctx.errcode = e2fsck_allocate_subcluster_bitmap(fs,
1054 _("in-use block map"), EXT2FS_BMAP64_RBTREE,
1055 "block_found_map", &ctx->block_found_map);
1056 if (pctx.errcode) {
1057 pctx.num = 1;
1058 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1059 ctx->flags |= E2F_FLAG_ABORT;
1060 return;
1061 }
1062 pctx.errcode = e2fsck_allocate_block_bitmap(fs,
1063 _("metadata block map"), EXT2FS_BMAP64_RBTREE,
1064 "block_metadata_map", &ctx->block_metadata_map);
1065 if (pctx.errcode) {
1066 pctx.num = 1;
1067 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1068 ctx->flags |= E2F_FLAG_ABORT;
1069 return;
1070 }
1071 e2fsck_setup_tdb_icount(ctx, 0, &ctx->inode_link_info);
1072 if (!ctx->inode_link_info) {
1073 e2fsck_set_bitmap_type(fs, EXT2FS_BMAP64_RBTREE,
1074 "inode_link_info", &save_type);
1075 pctx.errcode = ext2fs_create_icount2(fs, 0, 0, 0,
1076 &ctx->inode_link_info);
1077 fs->default_bitmap_type = save_type;
1078 }
1079
1080 if (pctx.errcode) {
1081 fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
1082 ctx->flags |= E2F_FLAG_ABORT;
1083 return;
1084 }
1085 inode = (struct ext2_inode *)
1086 e2fsck_allocate_memory(ctx, inode_size, "scratch inode");
1087
1088 inodes_to_process = (struct process_inode_block *)
1089 e2fsck_allocate_memory(ctx,
1090 (ctx->process_inode_size *
1091 sizeof(struct process_inode_block)),
1092 "array of inodes to process");
1093 process_inode_count = 0;
1094
1095 pctx.errcode = ext2fs_init_dblist(fs, 0);
1096 if (pctx.errcode) {
1097 fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
1098 ctx->flags |= E2F_FLAG_ABORT;
1099 goto endit;
1100 }
1101
1102 /*
1103 * If the last orphan field is set, clear it, since the pass1
1104 * processing will automatically find and clear the orphans.
1105 * In the future, we may want to try using the last_orphan
1106 * linked list ourselves, but for now, we clear it so that the
1107 * ext3 mount code won't get confused.
1108 */
1109 if (!(ctx->options & E2F_OPT_READONLY)) {
1110 if (fs->super->s_last_orphan) {
1111 fs->super->s_last_orphan = 0;
1112 ext2fs_mark_super_dirty(fs);
1113 }
1114 }
1115
1116 mark_table_blocks(ctx);
1117 pctx.errcode = ext2fs_convert_subcluster_bitmap(fs,
1118 &ctx->block_found_map);
1119 if (pctx.errcode) {
1120 fix_problem(ctx, PR_1_CONVERT_SUBCLUSTER, &pctx);
1121 ctx->flags |= E2F_FLAG_ABORT;
1122 goto endit;
1123 }
1124 block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
1125 "block interate buffer");
1126 if (EXT2_INODE_SIZE(fs->super) == EXT2_GOOD_OLD_INODE_SIZE)
1127 e2fsck_use_inode_shortcuts(ctx, 1);
1128 e2fsck_intercept_block_allocations(ctx);
1129 old_op = ehandler_operation(_("opening inode scan"));
1130 pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
1131 &scan);
1132 ehandler_operation(old_op);
1133 if (pctx.errcode) {
1134 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1135 ctx->flags |= E2F_FLAG_ABORT;
1136 goto endit;
1137 }
1138 ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE |
1139 EXT2_SF_WARN_GARBAGE_INODES, 0);
1140 ctx->stashed_inode = inode;
1141 scan_struct.ctx = ctx;
1142 scan_struct.block_buf = block_buf;
1143 ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
1144 if (ctx->progress && ((ctx->progress)(ctx, 1, 0,
1145 ctx->fs->group_desc_count)))
1146 goto endit;
1147 if ((fs->super->s_wtime < fs->super->s_inodes_count) ||
1148 (fs->super->s_mtime < fs->super->s_inodes_count) ||
1149 (fs->super->s_mkfs_time &&
1150 fs->super->s_mkfs_time < fs->super->s_inodes_count))
1151 low_dtime_check = 0;
1152
1153 if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) &&
1154 fs->super->s_mmp_block > fs->super->s_first_data_block &&
1155 fs->super->s_mmp_block < ext2fs_blocks_count(fs->super))
1156 ext2fs_mark_block_bitmap2(ctx->block_found_map,
1157 fs->super->s_mmp_block);
1158
1159 /* Set up ctx->lost_and_found if possible */
1160 (void) e2fsck_get_lost_and_found(ctx, 0);
1161
1162 while (1) {
1163 if (ino % (fs->super->s_inodes_per_group * 4) == 1) {
1164 if (e2fsck_mmp_update(fs))
1165 fatal_error(ctx, 0);
1166 }
1167 old_op = ehandler_operation(_("getting next inode from scan"));
1168 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
1169 inode, inode_size);
1170 if (ino > ino_threshold)
1171 pass1_readahead(ctx, &ra_group, &ino_threshold);
1172 ehandler_operation(old_op);
1173 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1174 return;
1175 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
1176 /*
1177 * If badblocks says badblocks is bad, offer to clear
1178 * the list, update the in-core bb list, and restart
1179 * the inode scan.
1180 */
1181 if (ino == EXT2_BAD_INO &&
1182 fix_problem(ctx, PR_1_BADBLOCKS_IN_BADBLOCKS,
1183 &pctx)) {
1184 errcode_t err;
1185
1186 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1187 ext2fs_badblocks_list_free(ctx->fs->badblocks);
1188 ctx->fs->badblocks = NULL;
1189 err = ext2fs_read_bb_inode(ctx->fs,
1190 &ctx->fs->badblocks);
1191 if (err) {
1192 fix_problem(ctx, PR_1_ISCAN_ERROR,
1193 &pctx);
1194 ctx->flags |= E2F_FLAG_ABORT;
1195 goto endit;
1196 }
1197 err = ext2fs_inode_scan_goto_blockgroup(scan,
1198 0);
1199 if (err) {
1200 fix_problem(ctx, PR_1_ISCAN_ERROR,
1201 &pctx);
1202 ctx->flags |= E2F_FLAG_ABORT;
1203 goto endit;
1204 }
1205 continue;
1206 }
1207 if (!ctx->inode_bb_map)
1208 alloc_bb_map(ctx);
1209 ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino);
1210 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1211 continue;
1212 }
1213 if (pctx.errcode &&
1214 pctx.errcode != EXT2_ET_INODE_CSUM_INVALID &&
1215 pctx.errcode != EXT2_ET_INODE_IS_GARBAGE) {
1216 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1217 ctx->flags |= E2F_FLAG_ABORT;
1218 goto endit;
1219 }
1220 if (!ino)
1221 break;
1222 pctx.ino = ino;
1223 pctx.inode = inode;
1224 ctx->stashed_ino = ino;
1225
1226 /* Clear trashed inode? */
1227 if (pctx.errcode == EXT2_ET_INODE_IS_GARBAGE &&
1228 inode->i_links_count > 0 &&
1229 fix_problem(ctx, PR_1_INODE_IS_GARBAGE, &pctx)) {
1230 pctx.errcode = 0;
1231 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1232 }
1233 failed_csum = pctx.errcode != 0;
1234
1235 if (inode->i_links_count) {
1236 pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
1237 ino, inode->i_links_count);
1238 if (pctx.errcode) {
1239 pctx.num = inode->i_links_count;
1240 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
1241 ctx->flags |= E2F_FLAG_ABORT;
1242 goto endit;
1243 }
1244 }
1245
1246 /* Conflicting inlinedata/extents inode flags? */
1247 if ((inode->i_flags & EXT4_INLINE_DATA_FL) &&
1248 (inode->i_flags & EXT4_EXTENTS_FL)) {
1249 int res = fix_inline_data_extents_file(ctx, ino, inode,
1250 inode_size,
1251 &pctx);
1252 if (res < 0) {
1253 /* skip FINISH_INODE_LOOP */
1254 continue;
1255 }
1256 }
1257
1258 /* Test for incorrect inline_data flags settings. */
1259 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && !inlinedata_fs &&
1260 (ino >= EXT2_FIRST_INODE(fs->super))) {
1261 size_t size = 0;
1262
1263 pctx.errcode = ext2fs_inline_data_size(fs, ino, &size);
1264 if (!pctx.errcode && size &&
1265 fix_problem(ctx, PR_1_INLINE_DATA_FEATURE, &pctx)) {
1266 sb->s_feature_incompat |=
1267 EXT4_FEATURE_INCOMPAT_INLINE_DATA;
1268 ext2fs_mark_super_dirty(fs);
1269 inlinedata_fs = 1;
1270 } else if (fix_problem(ctx, PR_1_INLINE_DATA_SET, &pctx)) {
1271 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1272 /* skip FINISH_INODE_LOOP */
1273 continue;
1274 }
1275 }
1276
1277 /* Test for inline data flag but no attr */
1278 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && inlinedata_fs &&
1279 EXT2_I_SIZE(inode) > EXT4_MIN_INLINE_DATA_SIZE &&
1280 (ino >= EXT2_FIRST_INODE(fs->super))) {
1281 size_t size = 0;
1282 errcode_t err;
1283 int flags;
1284
1285 flags = fs->flags;
1286 if (failed_csum)
1287 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
1288 err = get_inline_data_ea_size(fs, ino, &size);
1289 fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
1290 (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
1291
1292 switch (err) {
1293 case 0:
1294 /* Everything is awesome... */
1295 break;
1296 case EXT2_ET_BAD_EA_BLOCK_NUM:
1297 case EXT2_ET_BAD_EA_HASH:
1298 case EXT2_ET_BAD_EA_HEADER:
1299 case EXT2_ET_EA_BAD_NAME_LEN:
1300 case EXT2_ET_EA_BAD_VALUE_SIZE:
1301 case EXT2_ET_EA_KEY_NOT_FOUND:
1302 case EXT2_ET_EA_NO_SPACE:
1303 case EXT2_ET_MISSING_EA_FEATURE:
1304 case EXT2_ET_INLINE_DATA_CANT_ITERATE:
1305 case EXT2_ET_INLINE_DATA_NO_BLOCK:
1306 case EXT2_ET_INLINE_DATA_NO_SPACE:
1307 case EXT2_ET_NO_INLINE_DATA:
1308 case EXT2_ET_EXT_ATTR_CSUM_INVALID:
1309 case EXT2_ET_EA_BAD_VALUE_OFFSET:
1310 /* broken EA or no system.data EA; truncate */
1311 if (fix_problem(ctx, PR_1_INLINE_DATA_NO_ATTR,
1312 &pctx)) {
1313 err = ext2fs_inode_size_set(fs, inode,
1314 sizeof(inode->i_block));
1315 if (err) {
1316 pctx.errcode = err;
1317 ctx->flags |= E2F_FLAG_ABORT;
1318 goto endit;
1319 }
1320 if (LINUX_S_ISLNK(inode->i_mode))
1321 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1322 e2fsck_write_inode(ctx, ino, inode,
1323 "pass1");
1324 failed_csum = 0;
1325 }
1326 break;
1327 default:
1328 /* Some other kind of non-xattr error? */
1329 pctx.errcode = err;
1330 ctx->flags |= E2F_FLAG_ABORT;
1331 goto endit;
1332 }
1333 }
1334
1335 /*
1336 * Test for incorrect extent flag settings.
1337 *
1338 * On big-endian machines we must be careful:
1339 * When the inode is read, the i_block array is not swapped
1340 * if the extent flag is set. Therefore if we are testing
1341 * for or fixing a wrongly-set flag, we must potentially
1342 * (un)swap before testing, or after fixing.
1343 */
1344
1345 /*
1346 * In this case the extents flag was set when read, so
1347 * extent_header_verify is ok. If the inode is cleared,
1348 * no need to swap... so no extra swapping here.
1349 */
1350 if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs &&
1351 (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1352 (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) {
1353 if ((ext2fs_extent_header_verify(inode->i_block,
1354 sizeof(inode->i_block)) == 0) &&
1355 fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) {
1356 sb->s_feature_incompat |= EXT3_FEATURE_INCOMPAT_EXTENTS;
1357 ext2fs_mark_super_dirty(fs);
1358 extent_fs = 1;
1359 } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) {
1360 clear_inode:
1361 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1362 if (ino == EXT2_BAD_INO)
1363 ext2fs_mark_inode_bitmap2(ctx->inode_used_map,
1364 ino);
1365 /* skip FINISH_INODE_LOOP */
1366 continue;
1367 }
1368 }
1369
1370 /*
1371 * For big-endian machines:
1372 * If the inode didn't have the extents flag set when it
1373 * was read, then the i_blocks array was swapped. To test
1374 * as an extents header, we must swap it back first.
1375 * IF we then set the extents flag, the entire i_block
1376 * array must be un/re-swapped to make it proper extents data.
1377 */
1378 if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) &&
1379 (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1380 (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) &&
1381 (LINUX_S_ISREG(inode->i_mode) ||
1382 LINUX_S_ISDIR(inode->i_mode))) {
1383 void *ehp;
1384 #ifdef WORDS_BIGENDIAN
1385 __u32 tmp_block[EXT2_N_BLOCKS];
1386
1387 for (i = 0; i < EXT2_N_BLOCKS; i++)
1388 tmp_block[i] = ext2fs_swab32(inode->i_block[i]);
1389 ehp = tmp_block;
1390 #else
1391 ehp = inode->i_block;
1392 #endif
1393 if ((ext2fs_extent_header_verify(ehp,
1394 sizeof(inode->i_block)) == 0) &&
1395 (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) {
1396 inode->i_flags |= EXT4_EXTENTS_FL;
1397 #ifdef WORDS_BIGENDIAN
1398 memcpy(inode->i_block, tmp_block,
1399 sizeof(inode->i_block));
1400 #endif
1401 e2fsck_write_inode(ctx, ino, inode, "pass1");
1402 failed_csum = 0;
1403 }
1404 }
1405
1406 if (ino == EXT2_BAD_INO) {
1407 struct process_block_struct pb;
1408
1409 if ((failed_csum || inode->i_mode || inode->i_uid ||
1410 inode->i_gid || inode->i_links_count ||
1411 (inode->i_flags & EXT4_INLINE_DATA_FL) ||
1412 inode->i_file_acl) &&
1413 fix_problem(ctx, PR_1_INVALID_BAD_INODE, &pctx)) {
1414 memset(inode, 0, sizeof(struct ext2_inode));
1415 e2fsck_write_inode(ctx, ino, inode,
1416 "clear bad inode");
1417 failed_csum = 0;
1418 }
1419
1420 pctx.errcode = ext2fs_copy_bitmap(ctx->block_found_map,
1421 &pb.fs_meta_blocks);
1422 if (pctx.errcode) {
1423 pctx.num = 4;
1424 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1425 ctx->flags |= E2F_FLAG_ABORT;
1426 goto endit;
1427 }
1428 pb.ino = EXT2_BAD_INO;
1429 pb.num_blocks = pb.last_block = 0;
1430 pb.last_db_block = -1;
1431 pb.num_illegal_blocks = 0;
1432 pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
1433 pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
1434 pb.inode = inode;
1435 pb.pctx = &pctx;
1436 pb.ctx = ctx;
1437 pctx.errcode = ext2fs_block_iterate3(fs, ino, 0,
1438 block_buf, process_bad_block, &pb);
1439 ext2fs_free_block_bitmap(pb.fs_meta_blocks);
1440 if (pctx.errcode) {
1441 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
1442 ctx->flags |= E2F_FLAG_ABORT;
1443 goto endit;
1444 }
1445 if (pb.bbcheck)
1446 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
1447 ctx->flags |= E2F_FLAG_ABORT;
1448 goto endit;
1449 }
1450 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1451 clear_problem_context(&pctx);
1452 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1453 continue;
1454 } else if (ino == EXT2_ROOT_INO) {
1455 /*
1456 * Make sure the root inode is a directory; if
1457 * not, offer to clear it. It will be
1458 * regnerated in pass #3.
1459 */
1460 if (!LINUX_S_ISDIR(inode->i_mode)) {
1461 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx))
1462 goto clear_inode;
1463 }
1464 /*
1465 * If dtime is set, offer to clear it. mke2fs
1466 * version 0.2b created filesystems with the
1467 * dtime field set for the root and lost+found
1468 * directories. We won't worry about
1469 * /lost+found, since that can be regenerated
1470 * easily. But we will fix the root directory
1471 * as a special case.
1472 */
1473 if (inode->i_dtime && inode->i_links_count) {
1474 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
1475 inode->i_dtime = 0;
1476 e2fsck_write_inode(ctx, ino, inode,
1477 "pass1");
1478 failed_csum = 0;
1479 }
1480 }
1481 } else if (ino == EXT2_JOURNAL_INO) {
1482 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1483 if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
1484 if (!LINUX_S_ISREG(inode->i_mode) &&
1485 fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
1486 &pctx)) {
1487 inode->i_mode = LINUX_S_IFREG;
1488 e2fsck_write_inode(ctx, ino, inode,
1489 "pass1");
1490 failed_csum = 0;
1491 }
1492 check_blocks(ctx, &pctx, block_buf);
1493 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1494 continue;
1495 }
1496 if ((inode->i_links_count ||
1497 inode->i_blocks || inode->i_block[0]) &&
1498 fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
1499 &pctx)) {
1500 memset(inode, 0, inode_size);
1501 ext2fs_icount_store(ctx->inode_link_info,
1502 ino, 0);
1503 e2fsck_write_inode_full(ctx, ino, inode,
1504 inode_size, "pass1");
1505 failed_csum = 0;
1506 }
1507 } else if ((ino == EXT4_USR_QUOTA_INO) ||
1508 (ino == EXT4_GRP_QUOTA_INO)) {
1509 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1510 if ((fs->super->s_feature_ro_compat &
1511 EXT4_FEATURE_RO_COMPAT_QUOTA) &&
1512 ((fs->super->s_usr_quota_inum == ino) ||
1513 (fs->super->s_grp_quota_inum == ino))) {
1514 if (!LINUX_S_ISREG(inode->i_mode) &&
1515 fix_problem(ctx, PR_1_QUOTA_BAD_MODE,
1516 &pctx)) {
1517 inode->i_mode = LINUX_S_IFREG;
1518 e2fsck_write_inode(ctx, ino, inode,
1519 "pass1");
1520 failed_csum = 0;
1521 }
1522 check_blocks(ctx, &pctx, block_buf);
1523 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1524 continue;
1525 }
1526 if ((inode->i_links_count ||
1527 inode->i_blocks || inode->i_block[0]) &&
1528 fix_problem(ctx, PR_1_QUOTA_INODE_NOT_CLEAR,
1529 &pctx)) {
1530 memset(inode, 0, inode_size);
1531 ext2fs_icount_store(ctx->inode_link_info,
1532 ino, 0);
1533 e2fsck_write_inode_full(ctx, ino, inode,
1534 inode_size, "pass1");
1535 failed_csum = 0;
1536 }
1537 } else if (ino < EXT2_FIRST_INODE(fs->super)) {
1538 problem_t problem = 0;
1539
1540 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1541 if (ino == EXT2_BOOT_LOADER_INO) {
1542 if (LINUX_S_ISDIR(inode->i_mode))
1543 problem = PR_1_RESERVED_BAD_MODE;
1544 } else if (ino == EXT2_RESIZE_INO) {
1545 if (inode->i_mode &&
1546 !LINUX_S_ISREG(inode->i_mode))
1547 problem = PR_1_RESERVED_BAD_MODE;
1548 } else {
1549 if (inode->i_mode != 0)
1550 problem = PR_1_RESERVED_BAD_MODE;
1551 }
1552 if (problem) {
1553 if (fix_problem(ctx, problem, &pctx)) {
1554 inode->i_mode = 0;
1555 e2fsck_write_inode(ctx, ino, inode,
1556 "pass1");
1557 failed_csum = 0;
1558 }
1559 }
1560 check_blocks(ctx, &pctx, block_buf);
1561 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1562 continue;
1563 }
1564
1565 /*
1566 * Check for inodes who might have been part of the
1567 * orphaned list linked list. They should have gotten
1568 * dealt with by now, unless the list had somehow been
1569 * corrupted.
1570 *
1571 * FIXME: In the future, inodes which are still in use
1572 * (and which are therefore) pending truncation should
1573 * be handled specially. Right now we just clear the
1574 * dtime field, and the normal e2fsck handling of
1575 * inodes where i_size and the inode blocks are
1576 * inconsistent is to fix i_size, instead of releasing
1577 * the extra blocks. This won't catch the inodes that
1578 * was at the end of the orphan list, but it's better
1579 * than nothing. The right answer is that there
1580 * shouldn't be any bugs in the orphan list handling. :-)
1581 */
1582 if (inode->i_dtime && low_dtime_check &&
1583 inode->i_dtime < ctx->fs->super->s_inodes_count) {
1584 if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
1585 inode->i_dtime = inode->i_links_count ?
1586 0 : ctx->now;
1587 e2fsck_write_inode(ctx, ino, inode,
1588 "pass1");
1589 failed_csum = 0;
1590 }
1591 }
1592
1593 /*
1594 * This code assumes that deleted inodes have
1595 * i_links_count set to 0.
1596 */
1597 if (!inode->i_links_count) {
1598 if (!inode->i_dtime && inode->i_mode) {
1599 if (fix_problem(ctx,
1600 PR_1_ZERO_DTIME, &pctx)) {
1601 inode->i_dtime = ctx->now;
1602 e2fsck_write_inode(ctx, ino, inode,
1603 "pass1");
1604 failed_csum = 0;
1605 }
1606 }
1607 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1608 continue;
1609 }
1610 /*
1611 * n.b. 0.3c ext2fs code didn't clear i_links_count for
1612 * deleted files. Oops.
1613 *
1614 * Since all new ext2 implementations get this right,
1615 * we now assume that the case of non-zero
1616 * i_links_count and non-zero dtime means that we
1617 * should keep the file, not delete it.
1618 *
1619 */
1620 if (inode->i_dtime) {
1621 if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
1622 inode->i_dtime = 0;
1623 e2fsck_write_inode(ctx, ino, inode, "pass1");
1624 failed_csum = 0;
1625 }
1626 }
1627
1628 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1629 switch (fs->super->s_creator_os) {
1630 case EXT2_OS_HURD:
1631 frag = inode->osd2.hurd2.h_i_frag;
1632 fsize = inode->osd2.hurd2.h_i_fsize;
1633 break;
1634 default:
1635 frag = fsize = 0;
1636 }
1637
1638 if (inode->i_faddr || frag || fsize ||
1639 (LINUX_S_ISDIR(inode->i_mode) && inode->i_dir_acl))
1640 mark_inode_bad(ctx, ino);
1641 if ((fs->super->s_creator_os == EXT2_OS_LINUX) &&
1642 !(fs->super->s_feature_incompat &
1643 EXT4_FEATURE_INCOMPAT_64BIT) &&
1644 inode->osd2.linux2.l_i_file_acl_high != 0)
1645 mark_inode_bad(ctx, ino);
1646 if ((fs->super->s_creator_os == EXT2_OS_LINUX) &&
1647 !(fs->super->s_feature_ro_compat &
1648 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) &&
1649 (inode->osd2.linux2.l_i_blocks_hi != 0))
1650 mark_inode_bad(ctx, ino);
1651 if (inode->i_flags & EXT2_IMAGIC_FL) {
1652 if (imagic_fs) {
1653 if (!ctx->inode_imagic_map)
1654 alloc_imagic_map(ctx);
1655 ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map,
1656 ino);
1657 } else {
1658 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
1659 inode->i_flags &= ~EXT2_IMAGIC_FL;
1660 e2fsck_write_inode(ctx, ino,
1661 inode, "pass1");
1662 failed_csum = 0;
1663 }
1664 }
1665 }
1666
1667 check_inode_extra_space(ctx, &pctx);
1668 check_is_really_dir(ctx, &pctx, block_buf);
1669
1670 /*
1671 * ext2fs_inode_has_valid_blocks2 does not actually look
1672 * at i_block[] values, so not endian-sensitive here.
1673 */
1674 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) &&
1675 LINUX_S_ISLNK(inode->i_mode) &&
1676 !ext2fs_inode_has_valid_blocks2(fs, inode) &&
1677 fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) {
1678 inode->i_flags &= ~EXT4_EXTENTS_FL;
1679 e2fsck_write_inode(ctx, ino, inode, "pass1");
1680 failed_csum = 0;
1681 }
1682
1683 if (LINUX_S_ISDIR(inode->i_mode)) {
1684 ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
1685 e2fsck_add_dir_info(ctx, ino, 0);
1686 ctx->fs_directory_count++;
1687 if (inode->i_flags & EXT4_ENCRYPT_FL)
1688 add_encrypted_dir(ctx, ino);
1689 } else if (LINUX_S_ISREG (inode->i_mode)) {
1690 ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino);
1691 ctx->fs_regular_count++;
1692 } else if (LINUX_S_ISCHR (inode->i_mode) &&
1693 e2fsck_pass1_check_device_inode(fs, inode)) {
1694 check_extents_inlinedata(ctx, &pctx);
1695 check_immutable(ctx, &pctx);
1696 check_size(ctx, &pctx);
1697 ctx->fs_chardev_count++;
1698 } else if (LINUX_S_ISBLK (inode->i_mode) &&
1699 e2fsck_pass1_check_device_inode(fs, inode)) {
1700 check_extents_inlinedata(ctx, &pctx);
1701 check_immutable(ctx, &pctx);
1702 check_size(ctx, &pctx);
1703 ctx->fs_blockdev_count++;
1704 } else if (LINUX_S_ISLNK (inode->i_mode) &&
1705 e2fsck_pass1_check_symlink(fs, ino, inode,
1706 block_buf)) {
1707 check_immutable(ctx, &pctx);
1708 ctx->fs_symlinks_count++;
1709 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
1710 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1711 continue;
1712 } else if (ext2fs_inode_data_blocks(fs, inode) == 0) {
1713 ctx->fs_fast_symlinks_count++;
1714 check_blocks(ctx, &pctx, block_buf);
1715 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1716 continue;
1717 }
1718 }
1719 else if (LINUX_S_ISFIFO (inode->i_mode) &&
1720 e2fsck_pass1_check_device_inode(fs, inode)) {
1721 check_extents_inlinedata(ctx, &pctx);
1722 check_immutable(ctx, &pctx);
1723 check_size(ctx, &pctx);
1724 ctx->fs_fifo_count++;
1725 } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
1726 e2fsck_pass1_check_device_inode(fs, inode)) {
1727 check_extents_inlinedata(ctx, &pctx);
1728 check_immutable(ctx, &pctx);
1729 check_size(ctx, &pctx);
1730 ctx->fs_sockets_count++;
1731 } else
1732 mark_inode_bad(ctx, ino);
1733 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1734 !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
1735 if (inode->i_block[EXT2_IND_BLOCK])
1736 ctx->fs_ind_count++;
1737 if (inode->i_block[EXT2_DIND_BLOCK])
1738 ctx->fs_dind_count++;
1739 if (inode->i_block[EXT2_TIND_BLOCK])
1740 ctx->fs_tind_count++;
1741 }
1742 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1743 !(inode->i_flags & EXT4_INLINE_DATA_FL) &&
1744 (inode->i_block[EXT2_IND_BLOCK] ||
1745 inode->i_block[EXT2_DIND_BLOCK] ||
1746 inode->i_block[EXT2_TIND_BLOCK] ||
1747 ext2fs_file_acl_block(fs, inode))) {
1748 inodes_to_process[process_inode_count].ino = ino;
1749 inodes_to_process[process_inode_count].inode = *inode;
1750 process_inode_count++;
1751 } else
1752 check_blocks(ctx, &pctx, block_buf);
1753
1754 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1755
1756 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1757 goto endit;
1758
1759 if (process_inode_count >= ctx->process_inode_size) {
1760 process_inodes(ctx, block_buf);
1761
1762 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1763 goto endit;
1764 }
1765 }
1766 process_inodes(ctx, block_buf);
1767 ext2fs_close_inode_scan(scan);
1768 scan = NULL;
1769
1770 reserve_block_for_root_repair(ctx);
1771 reserve_block_for_lnf_repair(ctx);
1772
1773 /*
1774 * If any extended attribute blocks' reference counts need to
1775 * be adjusted, either up (ctx->refcount_extra), or down
1776 * (ctx->refcount), then fix them.
1777 */
1778 if (ctx->refcount) {
1779 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
1780 ea_refcount_free(ctx->refcount);
1781 ctx->refcount = 0;
1782 }
1783 if (ctx->refcount_extra) {
1784 adjust_extattr_refcount(ctx, ctx->refcount_extra,
1785 block_buf, +1);
1786 ea_refcount_free(ctx->refcount_extra);
1787 ctx->refcount_extra = 0;
1788 }
1789
1790 if (ctx->invalid_bitmaps)
1791 handle_fs_bad_blocks(ctx);
1792
1793 /* We don't need the block_ea_map any more */
1794 if (ctx->block_ea_map) {
1795 ext2fs_free_block_bitmap(ctx->block_ea_map);
1796 ctx->block_ea_map = 0;
1797 }
1798
1799 if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
1800 clear_problem_context(&pctx);
1801 pctx.errcode = ext2fs_create_resize_inode(fs);
1802 if (pctx.errcode) {
1803 if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE,
1804 &pctx)) {
1805 ctx->flags |= E2F_FLAG_ABORT;
1806 goto endit;
1807 }
1808 pctx.errcode = 0;
1809 }
1810 if (!pctx.errcode) {
1811 e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
1812 "recreate inode");
1813 inode->i_mtime = ctx->now;
1814 e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
1815 "recreate inode");
1816 }
1817 ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
1818 }
1819
1820 if (ctx->flags & E2F_FLAG_RESTART) {
1821 /*
1822 * Only the master copy of the superblock and block
1823 * group descriptors are going to be written during a
1824 * restart, so set the superblock to be used to be the
1825 * master superblock.
1826 */
1827 ctx->use_superblock = 0;
1828 unwind_pass1(fs);
1829 goto endit;
1830 }
1831
1832 if (ctx->block_dup_map) {
1833 if (ctx->options & E2F_OPT_PREEN) {
1834 clear_problem_context(&pctx);
1835 fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
1836 }
1837 e2fsck_pass1_dupblocks(ctx, block_buf);
1838 }
1839 ctx->flags |= E2F_FLAG_ALLOC_OK;
1840 ext2fs_free_mem(&inodes_to_process);
1841 endit:
1842 e2fsck_use_inode_shortcuts(ctx, 0);
1843
1844 if (scan)
1845 ext2fs_close_inode_scan(scan);
1846 if (block_buf)
1847 ext2fs_free_mem(&block_buf);
1848 if (inode)
1849 ext2fs_free_mem(&inode);
1850
1851 /*
1852 * The l+f inode may have been cleared, so zap it now and
1853 * later passes will recalculate it if necessary
1854 */
1855 ctx->lost_and_found = 0;
1856
1857 if ((ctx->flags & E2F_FLAG_SIGNAL_MASK) == 0)
1858 print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io);
1859 }
1860 #undef FINISH_INODE_LOOP
1861
1862 /*
1863 * When the inode_scan routines call this callback at the end of the
1864 * glock group, call process_inodes.
1865 */
1866 static errcode_t scan_callback(ext2_filsys fs,
1867 ext2_inode_scan scan EXT2FS_ATTR((unused)),
1868 dgrp_t group, void * priv_data)
1869 {
1870 struct scan_callback_struct *scan_struct;
1871 e2fsck_t ctx;
1872
1873 scan_struct = (struct scan_callback_struct *) priv_data;
1874 ctx = scan_struct->ctx;
1875
1876 process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf);
1877
1878 if (ctx->progress)
1879 if ((ctx->progress)(ctx, 1, group+1,
1880 ctx->fs->group_desc_count))
1881 return EXT2_ET_CANCEL_REQUESTED;
1882
1883 return 0;
1884 }
1885
1886 /*
1887 * Process the inodes in the "inodes to process" list.
1888 */
1889 static void process_inodes(e2fsck_t ctx, char *block_buf)
1890 {
1891 int i;
1892 struct ext2_inode *old_stashed_inode;
1893 ext2_ino_t old_stashed_ino;
1894 const char *old_operation;
1895 char buf[80];
1896 struct problem_context pctx;
1897
1898 #if 0
1899 printf("begin process_inodes: ");
1900 #endif
1901 if (process_inode_count == 0)
1902 return;
1903 old_operation = ehandler_operation(0);
1904 old_stashed_inode = ctx->stashed_inode;
1905 old_stashed_ino = ctx->stashed_ino;
1906 qsort(inodes_to_process, process_inode_count,
1907 sizeof(struct process_inode_block), process_inode_cmp);
1908 clear_problem_context(&pctx);
1909 for (i=0; i < process_inode_count; i++) {
1910 pctx.inode = ctx->stashed_inode = &inodes_to_process[i].inode;
1911 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
1912
1913 #if 0
1914 printf("%u ", pctx.ino);
1915 #endif
1916 sprintf(buf, _("reading indirect blocks of inode %u"),
1917 pctx.ino);
1918 ehandler_operation(buf);
1919 check_blocks(ctx, &pctx, block_buf);
1920 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1921 break;
1922 }
1923 ctx->stashed_inode = old_stashed_inode;
1924 ctx->stashed_ino = old_stashed_ino;
1925 process_inode_count = 0;
1926 #if 0
1927 printf("end process inodes\n");
1928 #endif
1929 ehandler_operation(old_operation);
1930 }
1931
1932 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
1933 {
1934 const struct process_inode_block *ib_a =
1935 (const struct process_inode_block *) a;
1936 const struct process_inode_block *ib_b =
1937 (const struct process_inode_block *) b;
1938 int ret;
1939
1940 ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
1941 ib_b->inode.i_block[EXT2_IND_BLOCK]);
1942 if (ret == 0)
1943 /*
1944 * We only call process_inodes() for non-extent
1945 * inodes, so it's OK to pass NULL to
1946 * ext2fs_file_acl_block() here.
1947 */
1948 ret = ext2fs_file_acl_block(0, &(ib_a->inode)) -
1949 ext2fs_file_acl_block(0, &(ib_b->inode));
1950 if (ret == 0)
1951 ret = ib_a->ino - ib_b->ino;
1952 return ret;
1953 }
1954
1955 /*
1956 * Mark an inode as being bad in some what
1957 */
1958 static void mark_inode_bad(e2fsck_t ctx, ino_t ino)
1959 {
1960 struct problem_context pctx;
1961
1962 if (!ctx->inode_bad_map) {
1963 clear_problem_context(&pctx);
1964
1965 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
1966 _("bad inode map"), EXT2FS_BMAP64_RBTREE,
1967 "inode_bad_map", &ctx->inode_bad_map);
1968 if (pctx.errcode) {
1969 pctx.num = 3;
1970 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1971 /* Should never get here */
1972 ctx->flags |= E2F_FLAG_ABORT;
1973 return;
1974 }
1975 }
1976 ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino);
1977 }
1978
1979 static void add_encrypted_dir(e2fsck_t ctx, ino_t ino)
1980 {
1981 struct problem_context pctx;
1982
1983 if (!ctx->encrypted_dirs) {
1984 pctx.errcode = ext2fs_u32_list_create(&ctx->encrypted_dirs, 0);
1985 if (pctx.errcode)
1986 goto error;
1987 }
1988 pctx.errcode = ext2fs_u32_list_add(ctx->encrypted_dirs, ino);
1989 if (pctx.errcode == 0)
1990 return;
1991 error:
1992 fix_problem(ctx, PR_1_ALLOCATE_ENCRYPTED_DIRLIST, &pctx);
1993 /* Should never get here */
1994 ctx->flags |= E2F_FLAG_ABORT;
1995 }
1996
1997 /*
1998 * This procedure will allocate the inode "bb" (badblock) map table
1999 */
2000 static void alloc_bb_map(e2fsck_t ctx)
2001 {
2002 struct problem_context pctx;
2003
2004 clear_problem_context(&pctx);
2005 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2006 _("inode in bad block map"), EXT2FS_BMAP64_RBTREE,
2007 "inode_bb_map", &ctx->inode_bb_map);
2008 if (pctx.errcode) {
2009 pctx.num = 4;
2010 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2011 /* Should never get here */
2012 ctx->flags |= E2F_FLAG_ABORT;
2013 return;
2014 }
2015 }
2016
2017 /*
2018 * This procedure will allocate the inode imagic table
2019 */
2020 static void alloc_imagic_map(e2fsck_t ctx)
2021 {
2022 struct problem_context pctx;
2023
2024 clear_problem_context(&pctx);
2025 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2026 _("imagic inode map"), EXT2FS_BMAP64_RBTREE,
2027 "inode_imagic_map", &ctx->inode_imagic_map);
2028 if (pctx.errcode) {
2029 pctx.num = 5;
2030 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2031 /* Should never get here */
2032 ctx->flags |= E2F_FLAG_ABORT;
2033 return;
2034 }
2035 }
2036
2037 /*
2038 * Marks a block as in use, setting the dup_map if it's been set
2039 * already. Called by process_block and process_bad_block.
2040 *
2041 * WARNING: Assumes checks have already been done to make sure block
2042 * is valid. This is true in both process_block and process_bad_block.
2043 */
2044 static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block)
2045 {
2046 struct problem_context pctx;
2047
2048 clear_problem_context(&pctx);
2049
2050 if (ext2fs_fast_test_block_bitmap2(ctx->block_found_map, block)) {
2051 if (!ctx->block_dup_map) {
2052 pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
2053 _("multiply claimed block map"),
2054 EXT2FS_BMAP64_RBTREE, "block_dup_map",
2055 &ctx->block_dup_map);
2056 if (pctx.errcode) {
2057 pctx.num = 3;
2058 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
2059 &pctx);
2060 /* Should never get here */
2061 ctx->flags |= E2F_FLAG_ABORT;
2062 return;
2063 }
2064 }
2065 ext2fs_fast_mark_block_bitmap2(ctx->block_dup_map, block);
2066 } else {
2067 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block);
2068 }
2069 }
2070
2071 static _INLINE_ void mark_blocks_used(e2fsck_t ctx, blk64_t block,
2072 unsigned int num)
2073 {
2074 if (ext2fs_test_block_bitmap_range2(ctx->block_found_map, block, num))
2075 ext2fs_mark_block_bitmap_range2(ctx->block_found_map, block, num);
2076 else
2077 while (num--)
2078 mark_block_used(ctx, block++);
2079 }
2080
2081 /*
2082 * Adjust the extended attribute block's reference counts at the end
2083 * of pass 1, either by subtracting out references for EA blocks that
2084 * are still referenced in ctx->refcount, or by adding references for
2085 * EA blocks that had extra references as accounted for in
2086 * ctx->refcount_extra.
2087 */
2088 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
2089 char *block_buf, int adjust_sign)
2090 {
2091 struct ext2_ext_attr_header *header;
2092 struct problem_context pctx;
2093 ext2_filsys fs = ctx->fs;
2094 blk64_t blk;
2095 __u32 should_be;
2096 int count;
2097
2098 clear_problem_context(&pctx);
2099
2100 ea_refcount_intr_begin(refcount);
2101 while (1) {
2102 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
2103 break;
2104 pctx.blk = blk;
2105 pctx.errcode = ext2fs_read_ext_attr3(fs, blk, block_buf,
2106 pctx.ino);
2107 if (pctx.errcode) {
2108 fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
2109 return;
2110 }
2111 header = (struct ext2_ext_attr_header *) block_buf;
2112 pctx.blkcount = header->h_refcount;
2113 should_be = header->h_refcount + adjust_sign * count;
2114 pctx.num = should_be;
2115 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
2116 header->h_refcount = should_be;
2117 pctx.errcode = ext2fs_write_ext_attr3(fs, blk,
2118 block_buf,
2119 pctx.ino);
2120 if (pctx.errcode) {
2121 fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT,
2122 &pctx);
2123 continue;
2124 }
2125 }
2126 }
2127 }
2128
2129 /*
2130 * Handle processing the extended attribute blocks
2131 */
2132 static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
2133 char *block_buf)
2134 {
2135 ext2_filsys fs = ctx->fs;
2136 ext2_ino_t ino = pctx->ino;
2137 struct ext2_inode *inode = pctx->inode;
2138 blk64_t blk;
2139 char * end;
2140 struct ext2_ext_attr_header *header;
2141 struct ext2_ext_attr_entry *entry;
2142 int count;
2143 region_t region = 0;
2144 int failed_csum = 0;
2145
2146 blk = ext2fs_file_acl_block(fs, inode);
2147 if (blk == 0)
2148 return 0;
2149
2150 /*
2151 * If the Extended attribute flag isn't set, then a non-zero
2152 * file acl means that the inode is corrupted.
2153 *
2154 * Or if the extended attribute block is an invalid block,
2155 * then the inode is also corrupted.
2156 */
2157 if (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR) ||
2158 (blk < fs->super->s_first_data_block) ||
2159 (blk >= ext2fs_blocks_count(fs->super))) {
2160 mark_inode_bad(ctx, ino);
2161 return 0;
2162 }
2163
2164 /* If ea bitmap hasn't been allocated, create it */
2165 if (!ctx->block_ea_map) {
2166 pctx->errcode = e2fsck_allocate_block_bitmap(fs,
2167 _("ext attr block map"),
2168 EXT2FS_BMAP64_RBTREE, "block_ea_map",
2169 &ctx->block_ea_map);
2170 if (pctx->errcode) {
2171 pctx->num = 2;
2172 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
2173 ctx->flags |= E2F_FLAG_ABORT;
2174 return 0;
2175 }
2176 }
2177
2178 /* Create the EA refcount structure if necessary */
2179 if (!ctx->refcount) {
2180 pctx->errcode = ea_refcount_create(0, &ctx->refcount);
2181 if (pctx->errcode) {
2182 pctx->num = 1;
2183 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2184 ctx->flags |= E2F_FLAG_ABORT;
2185 return 0;
2186 }
2187 }
2188
2189 #if 0
2190 /* Debugging text */
2191 printf("Inode %u has EA block %u\n", ino, blk);
2192 #endif
2193
2194 /* Have we seen this EA block before? */
2195 if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) {
2196 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
2197 return 1;
2198 /* Ooops, this EA was referenced more than it stated */
2199 if (!ctx->refcount_extra) {
2200 pctx->errcode = ea_refcount_create(0,
2201 &ctx->refcount_extra);
2202 if (pctx->errcode) {
2203 pctx->num = 2;
2204 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2205 ctx->flags |= E2F_FLAG_ABORT;
2206 return 0;
2207 }
2208 }
2209 ea_refcount_increment(ctx->refcount_extra, blk, 0);
2210 return 1;
2211 }
2212
2213 /*
2214 * OK, we haven't seen this EA block yet. So we need to
2215 * validate it
2216 */
2217 pctx->blk = blk;
2218 pctx->errcode = ext2fs_read_ext_attr3(fs, blk, block_buf, pctx->ino);
2219 if (pctx->errcode == EXT2_ET_EXT_ATTR_CSUM_INVALID) {
2220 pctx->errcode = 0;
2221 failed_csum = 1;
2222 } else if (pctx->errcode == EXT2_ET_BAD_EA_HEADER)
2223 pctx->errcode = 0;
2224
2225 if (pctx->errcode &&
2226 fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx)) {
2227 pctx->errcode = 0;
2228 goto clear_extattr;
2229 }
2230 header = (struct ext2_ext_attr_header *) block_buf;
2231 pctx->blk = ext2fs_file_acl_block(fs, inode);
2232 if (((ctx->ext_attr_ver == 1) &&
2233 (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
2234 ((ctx->ext_attr_ver == 2) &&
2235 (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
2236 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
2237 goto clear_extattr;
2238 }
2239
2240 if (header->h_blocks != 1) {
2241 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
2242 goto clear_extattr;
2243 }
2244
2245 if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
2246 goto clear_extattr;
2247
2248 region = region_create(0, fs->blocksize);
2249 if (!region) {
2250 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
2251 ctx->flags |= E2F_FLAG_ABORT;
2252 return 0;
2253 }
2254 if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
2255 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2256 goto clear_extattr;
2257 }
2258
2259 entry = (struct ext2_ext_attr_entry *)(header+1);
2260 end = block_buf + fs->blocksize;
2261 while ((char *)entry < end && *(__u32 *)entry) {
2262 __u32 hash;
2263
2264 if (region_allocate(region, (char *)entry - (char *)header,
2265 EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
2266 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2267 goto clear_extattr;
2268 break;
2269 }
2270 if ((ctx->ext_attr_ver == 1 &&
2271 (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
2272 (ctx->ext_attr_ver == 2 &&
2273 entry->e_name_index == 0)) {
2274 if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
2275 goto clear_extattr;
2276 break;
2277 }
2278 if (entry->e_value_block != 0) {
2279 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
2280 goto clear_extattr;
2281 }
2282 if (entry->e_value_offs + entry->e_value_size > fs->blocksize) {
2283 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
2284 goto clear_extattr;
2285 break;
2286 }
2287 if (entry->e_value_size &&
2288 region_allocate(region, entry->e_value_offs,
2289 EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
2290 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2291 goto clear_extattr;
2292 }
2293
2294 hash = ext2fs_ext_attr_hash_entry(entry, block_buf +
2295 entry->e_value_offs);
2296
2297 if (entry->e_hash != hash) {
2298 pctx->num = entry->e_hash;
2299 if (fix_problem(ctx, PR_1_ATTR_HASH, pctx))
2300 goto clear_extattr;
2301 entry->e_hash = hash;
2302 }
2303
2304 entry = EXT2_EXT_ATTR_NEXT(entry);
2305 }
2306 if (region_allocate(region, (char *)entry - (char *)header, 4)) {
2307 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2308 goto clear_extattr;
2309 }
2310 region_free(region);
2311
2312 /*
2313 * We only get here if there was no other errors that were fixed.
2314 * If there was a checksum fail, ask to correct it.
2315 */
2316 if (failed_csum &&
2317 fix_problem(ctx, PR_1_EA_BLOCK_ONLY_CSUM_INVALID, pctx)) {
2318 pctx->errcode = ext2fs_write_ext_attr3(fs, blk, block_buf,
2319 pctx->ino);
2320 if (pctx->errcode)
2321 return 0;
2322 }
2323
2324 count = header->h_refcount - 1;
2325 if (count)
2326 ea_refcount_store(ctx->refcount, blk, count);
2327 mark_block_used(ctx, blk);
2328 ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk);
2329 return 1;
2330
2331 clear_extattr:
2332 if (region)
2333 region_free(region);
2334 ext2fs_file_acl_block_set(fs, inode, 0);
2335 e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
2336 return 0;
2337 }
2338
2339 /* Returns 1 if bad htree, 0 if OK */
2340 static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
2341 ext2_ino_t ino, struct ext2_inode *inode,
2342 char *block_buf)
2343 {
2344 struct ext2_dx_root_info *root;
2345 ext2_filsys fs = ctx->fs;
2346 errcode_t retval;
2347 blk64_t blk;
2348
2349 if ((!LINUX_S_ISDIR(inode->i_mode) &&
2350 fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
2351 (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) &&
2352 fix_problem(ctx, PR_1_HTREE_SET, pctx)))
2353 return 1;
2354
2355 pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk);
2356
2357 if ((pctx->errcode) ||
2358 (blk == 0) ||
2359 (blk < fs->super->s_first_data_block) ||
2360 (blk >= ext2fs_blocks_count(fs->super))) {
2361 if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2362 return 1;
2363 else
2364 return 0;
2365 }
2366
2367 retval = io_channel_read_blk64(fs->io, blk, 1, block_buf);
2368 if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2369 return 1;
2370
2371 /* XXX should check that beginning matches a directory */
2372 root = (struct ext2_dx_root_info *) (block_buf + 24);
2373
2374 if ((root->reserved_zero || root->info_length < 8) &&
2375 fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2376 return 1;
2377
2378 pctx->num = root->hash_version;
2379 if ((root->hash_version != EXT2_HASH_LEGACY) &&
2380 (root->hash_version != EXT2_HASH_HALF_MD4) &&
2381 (root->hash_version != EXT2_HASH_TEA) &&
2382 fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
2383 return 1;
2384
2385 if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
2386 fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
2387 return 1;
2388
2389 pctx->num = root->indirect_levels;
2390 if ((root->indirect_levels > 1) &&
2391 fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
2392 return 1;
2393
2394 return 0;
2395 }
2396
2397 void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
2398 struct ext2_inode *inode, int restart_flag,
2399 const char *source)
2400 {
2401 inode->i_flags = 0;
2402 inode->i_links_count = 0;
2403 ext2fs_icount_store(ctx->inode_link_info, ino, 0);
2404 inode->i_dtime = ctx->now;
2405
2406 /*
2407 * If a special inode has such rotten block mappings that we
2408 * want to clear the whole inode, be sure to actually zap
2409 * the block maps because i_links_count isn't checked for
2410 * special inodes, and we'll end up right back here the next
2411 * time we run fsck.
2412 */
2413 if (ino < EXT2_FIRST_INODE(ctx->fs->super))
2414 memset(inode->i_block, 0, sizeof(inode->i_block));
2415
2416 ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
2417 ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
2418 if (ctx->inode_reg_map)
2419 ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
2420 if (ctx->inode_bad_map)
2421 ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
2422
2423 /*
2424 * If the inode was partially accounted for before processing
2425 * was aborted, we need to restart the pass 1 scan.
2426 */
2427 ctx->flags |= restart_flag;
2428
2429 if (ino == EXT2_BAD_INO)
2430 memset(inode, 0, sizeof(struct ext2_inode));
2431
2432 e2fsck_write_inode(ctx, ino, inode, source);
2433 }
2434
2435 /*
2436 * Use the multiple-blocks reclamation code to fix alignment problems in
2437 * a bigalloc filesystem. We want a logical cluster to map to *only* one
2438 * physical cluster, and we want the block offsets within that cluster to
2439 * line up.
2440 */
2441 static int has_unaligned_cluster_map(e2fsck_t ctx,
2442 blk64_t last_pblk, e2_blkcnt_t last_lblk,
2443 blk64_t pblk, blk64_t lblk)
2444 {
2445 blk64_t cluster_mask;
2446
2447 if (!ctx->fs->cluster_ratio_bits)
2448 return 0;
2449 cluster_mask = EXT2FS_CLUSTER_MASK(ctx->fs);
2450
2451 /*
2452 * If the block in the logical cluster doesn't align with the block in
2453 * the physical cluster...
2454 */
2455 if ((lblk & cluster_mask) != (pblk & cluster_mask))
2456 return 1;
2457
2458 /*
2459 * If we cross a physical cluster boundary within a logical cluster...
2460 */
2461 if (last_pblk && (lblk & cluster_mask) != 0 &&
2462 EXT2FS_B2C(ctx->fs, lblk) == EXT2FS_B2C(ctx->fs, last_lblk) &&
2463 EXT2FS_B2C(ctx->fs, pblk) != EXT2FS_B2C(ctx->fs, last_pblk))
2464 return 1;
2465
2466 return 0;
2467 }
2468
2469 static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
2470 struct process_block_struct *pb,
2471 blk64_t start_block, blk64_t end_block,
2472 blk64_t eof_block,
2473 ext2_extent_handle_t ehandle,
2474 int try_repairs)
2475 {
2476 struct ext2fs_extent extent;
2477 blk64_t blk, last_lblk;
2478 e2_blkcnt_t blockcnt;
2479 unsigned int i;
2480 int is_dir, is_leaf;
2481 problem_t problem;
2482 struct ext2_extent_info info;
2483 int failed_csum = 0;
2484
2485 if (pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID)
2486 failed_csum = 1;
2487
2488 pctx->errcode = ext2fs_extent_get_info(ehandle, &info);
2489 if (pctx->errcode)
2490 return;
2491 if (!(ctx->options & E2F_OPT_FIXES_ONLY) &&
2492 !pb->eti.force_rebuild) {
2493 struct extent_tree_level *etl;
2494
2495 etl = pb->eti.ext_info + info.curr_level;
2496 etl->num_extents += info.num_entries;
2497 etl->max_extents += info.max_entries;
2498 /*
2499 * Implementation wart: Splitting extent blocks when appending
2500 * will leave the old block with one free entry. Therefore
2501 * unless the node is totally full, pretend that a non-root
2502 * extent block can hold one fewer entry than it actually does,
2503 * so that we don't repeatedly rebuild the extent tree.
2504 */
2505 if (info.curr_level && info.num_entries < info.max_entries)
2506 etl->max_extents--;
2507 }
2508
2509 pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB,
2510 &extent);
2511 while ((pctx->errcode == 0 ||
2512 pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID) &&
2513 info.num_entries-- > 0) {
2514 is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF;
2515 is_dir = LINUX_S_ISDIR(pctx->inode->i_mode);
2516 last_lblk = extent.e_lblk + extent.e_len - 1;
2517
2518 problem = 0;
2519 pctx->blk = extent.e_pblk;
2520 pctx->blk2 = extent.e_lblk;
2521 pctx->num = extent.e_len;
2522 pctx->blkcount = extent.e_lblk + extent.e_len;
2523
2524 if (extent.e_pblk == 0 ||
2525 extent.e_pblk < ctx->fs->super->s_first_data_block ||
2526 extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super))
2527 problem = PR_1_EXTENT_BAD_START_BLK;
2528 else if (extent.e_lblk < start_block)
2529 problem = PR_1_OUT_OF_ORDER_EXTENTS;
2530 else if ((end_block && last_lblk > end_block) &&
2531 (!(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT &&
2532 last_lblk > eof_block)))
2533 problem = PR_1_EXTENT_END_OUT_OF_BOUNDS;
2534 else if (is_leaf && extent.e_len == 0)
2535 problem = PR_1_EXTENT_LENGTH_ZERO;
2536 else if (is_leaf &&
2537 (extent.e_pblk + extent.e_len) >
2538 ext2fs_blocks_count(ctx->fs->super))
2539 problem = PR_1_EXTENT_ENDS_BEYOND;
2540 else if (is_leaf && is_dir &&
2541 ((extent.e_lblk + extent.e_len) >
2542 (1 << (21 - ctx->fs->super->s_log_block_size))))
2543 problem = PR_1_TOOBIG_DIR;
2544
2545 if (is_leaf && problem == 0 && extent.e_len > 0 &&
2546 region_allocate(pb->region, extent.e_lblk, extent.e_len))
2547 problem = PR_1_EXTENT_COLLISION;
2548
2549 /*
2550 * Uninitialized blocks in a directory? Clear the flag and
2551 * we'll interpret the blocks later.
2552 */
2553 if (try_repairs && is_dir && problem == 0 &&
2554 (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
2555 fix_problem(ctx, PR_1_UNINIT_DBLOCK, pctx)) {
2556 extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
2557 pb->inode_modified = 1;
2558 pctx->errcode = ext2fs_extent_replace(ehandle, 0,
2559 &extent);
2560 if (pctx->errcode)
2561 return;
2562 failed_csum = 0;
2563 }
2564
2565 if (try_repairs && problem) {
2566 report_problem:
2567 if (fix_problem(ctx, problem, pctx)) {
2568 if (ctx->invalid_bitmaps) {
2569 /*
2570 * If fsck knows the bitmaps are bad,
2571 * skip to the next extent and
2572 * try to clear this extent again
2573 * after fixing the bitmaps, by
2574 * restarting fsck.
2575 */
2576 pctx->errcode = ext2fs_extent_get(
2577 ehandle,
2578 EXT2_EXTENT_NEXT_SIB,
2579 &extent);
2580 ctx->flags |= E2F_FLAG_RESTART_LATER;
2581 if (pctx->errcode ==
2582 EXT2_ET_NO_CURRENT_NODE) {
2583 pctx->errcode = 0;
2584 break;
2585 }
2586 continue;
2587 }
2588 e2fsck_read_bitmaps(ctx);
2589 pb->inode_modified = 1;
2590 pctx->errcode =
2591 ext2fs_extent_delete(ehandle, 0);
2592 if (pctx->errcode) {
2593 pctx->str = "ext2fs_extent_delete";
2594 return;
2595 }
2596 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
2597 if (pctx->errcode &&
2598 pctx->errcode != EXT2_ET_NO_CURRENT_NODE) {
2599 pctx->str = "ext2fs_extent_fix_parents";
2600 return;
2601 }
2602 pctx->errcode = ext2fs_extent_get(ehandle,
2603 EXT2_EXTENT_CURRENT,
2604 &extent);
2605 if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) {
2606 pctx->errcode = 0;
2607 break;
2608 }
2609 failed_csum = 0;
2610 continue;
2611 }
2612 goto next;
2613 }
2614
2615 if (!is_leaf) {
2616 blk64_t lblk = extent.e_lblk;
2617 int next_try_repairs = 1;
2618
2619 blk = extent.e_pblk;
2620
2621 /*
2622 * If this lower extent block collides with critical
2623 * metadata, don't try to repair the damage. Pass 1b
2624 * will reallocate the block; then we can try again.
2625 */
2626 if (pb->ino != EXT2_RESIZE_INO &&
2627 ext2fs_test_block_bitmap2(ctx->block_metadata_map,
2628 extent.e_pblk)) {
2629 next_try_repairs = 0;
2630 pctx->blk = blk;
2631 fix_problem(ctx,
2632 PR_1_CRITICAL_METADATA_COLLISION,
2633 pctx);
2634 ctx->flags |= E2F_FLAG_RESTART_LATER;
2635 }
2636 pctx->errcode = ext2fs_extent_get(ehandle,
2637 EXT2_EXTENT_DOWN, &extent);
2638 if (pctx->errcode &&
2639 pctx->errcode != EXT2_ET_EXTENT_CSUM_INVALID) {
2640 pctx->str = "EXT2_EXTENT_DOWN";
2641 problem = PR_1_EXTENT_HEADER_INVALID;
2642 if (!next_try_repairs)
2643 return;
2644 if (pctx->errcode == EXT2_ET_EXTENT_HEADER_BAD)
2645 goto report_problem;
2646 return;
2647 }
2648 /* The next extent should match this index's logical start */
2649 if (extent.e_lblk != lblk) {
2650 struct ext2_extent_info e_info;
2651
2652 ext2fs_extent_get_info(ehandle, &e_info);
2653 pctx->blk = lblk;
2654 pctx->blk2 = extent.e_lblk;
2655 pctx->num = e_info.curr_level - 1;
2656 problem = PR_1_EXTENT_INDEX_START_INVALID;
2657 if (fix_problem(ctx, problem, pctx)) {
2658 pb->inode_modified = 1;
2659 pctx->errcode =
2660 ext2fs_extent_fix_parents(ehandle);
2661 if (pctx->errcode) {
2662 pctx->str = "ext2fs_extent_fix_parents";
2663 return;
2664 }
2665 }
2666 }
2667 scan_extent_node(ctx, pctx, pb, extent.e_lblk,
2668 last_lblk, eof_block, ehandle,
2669 next_try_repairs);
2670 if (pctx->errcode)
2671 return;
2672 pctx->errcode = ext2fs_extent_get(ehandle,
2673 EXT2_EXTENT_UP, &extent);
2674 if (pctx->errcode) {
2675 pctx->str = "EXT2_EXTENT_UP";
2676 return;
2677 }
2678 mark_block_used(ctx, blk);
2679 pb->num_blocks++;
2680 goto next;
2681 }
2682
2683 if ((pb->previous_block != 0) &&
2684 (pb->previous_block+1 != extent.e_pblk)) {
2685 if (ctx->options & E2F_OPT_FRAGCHECK) {
2686 char type = '?';
2687
2688 if (pb->is_dir)
2689 type = 'd';
2690 else if (pb->is_reg)
2691 type = 'f';
2692
2693 printf(("%6lu(%c): expecting %6lu "
2694 "actual extent "
2695 "phys %6lu log %lu len %lu\n"),
2696 (unsigned long) pctx->ino, type,
2697 (unsigned long) pb->previous_block+1,
2698 (unsigned long) extent.e_pblk,
2699 (unsigned long) extent.e_lblk,
2700 (unsigned long) extent.e_len);
2701 }
2702 pb->fragmented = 1;
2703 }
2704 /*
2705 * If we notice a gap in the logical block mappings of an
2706 * extent-mapped directory, offer to close the hole by
2707 * moving the logical block down, otherwise we'll go mad in
2708 * pass 3 allocating empty directory blocks to fill the hole.
2709 */
2710 if (try_repairs && is_dir &&
2711 pb->last_block + 1 < (e2_blkcnt_t)extent.e_lblk) {
2712 blk64_t new_lblk;
2713
2714 new_lblk = pb->last_block + 1;
2715 if (EXT2FS_CLUSTER_RATIO(ctx->fs) > 1)
2716 new_lblk = ((new_lblk +
2717 EXT2FS_CLUSTER_RATIO(ctx->fs) - 1) &
2718 ~EXT2FS_CLUSTER_MASK(ctx->fs)) |
2719 (extent.e_pblk &
2720 EXT2FS_CLUSTER_MASK(ctx->fs));
2721 pctx->blk = extent.e_lblk;
2722 pctx->blk2 = new_lblk;
2723 if (fix_problem(ctx, PR_1_COLLAPSE_DBLOCK, pctx)) {
2724 extent.e_lblk = new_lblk;
2725 pb->inode_modified = 1;
2726 pctx->errcode = ext2fs_extent_replace(ehandle,
2727 0, &extent);
2728 if (pctx->errcode) {
2729 pctx->errcode = 0;
2730 goto alloc_later;
2731 }
2732 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
2733 if (pctx->errcode)
2734 goto failed_add_dir_block;
2735 pctx->errcode = ext2fs_extent_goto(ehandle,
2736 extent.e_lblk);
2737 if (pctx->errcode)
2738 goto failed_add_dir_block;
2739 last_lblk = extent.e_lblk + extent.e_len - 1;
2740 failed_csum = 0;
2741 }
2742 }
2743 alloc_later:
2744 while (is_dir && (++pb->last_db_block <
2745 (e2_blkcnt_t) extent.e_lblk)) {
2746 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist,
2747 pb->ino, 0,
2748 pb->last_db_block);
2749 if (pctx->errcode) {
2750 pctx->blk = 0;
2751 pctx->num = pb->last_db_block;
2752 goto failed_add_dir_block;
2753 }
2754 }
2755 if (!ctx->fs->cluster_ratio_bits) {
2756 mark_blocks_used(ctx, extent.e_pblk, extent.e_len);
2757 pb->num_blocks += extent.e_len;
2758 }
2759 for (blk = extent.e_pblk, blockcnt = extent.e_lblk, i = 0;
2760 i < extent.e_len;
2761 blk++, blockcnt++, i++) {
2762 if (ctx->fs->cluster_ratio_bits &&
2763 !(pb->previous_block &&
2764 (EXT2FS_B2C(ctx->fs, blk) ==
2765 EXT2FS_B2C(ctx->fs, pb->previous_block)) &&
2766 (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
2767 ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
2768 mark_block_used(ctx, blk);
2769 pb->num_blocks++;
2770 }
2771 if (has_unaligned_cluster_map(ctx, pb->previous_block,
2772 pb->last_block, blk,
2773 blockcnt)) {
2774 pctx->blk = blockcnt;
2775 pctx->blk2 = blk;
2776 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
2777 mark_block_used(ctx, blk);
2778 mark_block_used(ctx, blk);
2779 }
2780 pb->last_block = blockcnt;
2781 pb->previous_block = blk;
2782
2783 if (is_dir) {
2784 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pctx->ino, blk, blockcnt);
2785 if (pctx->errcode) {
2786 pctx->blk = blk;
2787 pctx->num = blockcnt;
2788 failed_add_dir_block:
2789 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
2790 /* Should never get here */
2791 ctx->flags |= E2F_FLAG_ABORT;
2792 return;
2793 }
2794 }
2795 }
2796 if (is_dir && extent.e_len > 0)
2797 pb->last_db_block = blockcnt - 1;
2798 pb->previous_block = extent.e_pblk + extent.e_len - 1;
2799 start_block = pb->last_block = last_lblk;
2800 if (is_leaf && !is_dir &&
2801 !(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT))
2802 pb->last_init_lblock = last_lblk;
2803 next:
2804 pctx->errcode = ext2fs_extent_get(ehandle,
2805 EXT2_EXTENT_NEXT_SIB,
2806 &extent);
2807 }
2808
2809 /* Failed csum but passes checks? Ask to fix checksum. */
2810 if (failed_csum &&
2811 fix_problem(ctx, PR_1_EXTENT_ONLY_CSUM_INVALID, pctx)) {
2812 pb->inode_modified = 1;
2813 pctx->errcode = ext2fs_extent_replace(ehandle, 0, &extent);
2814 if (pctx->errcode)
2815 return;
2816 }
2817
2818 if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT)
2819 pctx->errcode = 0;
2820 }
2821
2822 static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
2823 struct process_block_struct *pb)
2824 {
2825 struct ext2_extent_info info;
2826 struct ext2_inode *inode = pctx->inode;
2827 ext2_extent_handle_t ehandle;
2828 ext2_filsys fs = ctx->fs;
2829 ext2_ino_t ino = pctx->ino;
2830 errcode_t retval;
2831 blk64_t eof_lblk;
2832
2833 pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle);
2834 if (pctx->errcode) {
2835 if (fix_problem(ctx, PR_1_READ_EXTENT, pctx))
2836 e2fsck_clear_inode(ctx, ino, inode, 0,
2837 "check_blocks_extents");
2838 pctx->errcode = 0;
2839 return;
2840 }
2841
2842 retval = ext2fs_extent_get_info(ehandle, &info);
2843 if (retval == 0) {
2844 int max_depth = info.max_depth;
2845
2846 if (max_depth >= MAX_EXTENT_DEPTH_COUNT)
2847 max_depth = MAX_EXTENT_DEPTH_COUNT-1;
2848 ctx->extent_depth_count[max_depth]++;
2849 }
2850
2851 /* Check maximum extent depth */
2852 pctx->blk = info.max_depth;
2853 pctx->blk2 = ext2fs_max_extent_depth(ehandle);
2854 if (pctx->blk2 < pctx->blk &&
2855 fix_problem(ctx, PR_1_EXTENT_BAD_MAX_DEPTH, pctx))
2856 pb->eti.force_rebuild = 1;
2857
2858 /* Can we collect extent tree level stats? */
2859 pctx->blk = MAX_EXTENT_DEPTH_COUNT;
2860 if (pctx->blk2 > pctx->blk)
2861 fix_problem(ctx, PR_1E_MAX_EXTENT_TREE_DEPTH, pctx);
2862 memset(pb->eti.ext_info, 0, sizeof(pb->eti.ext_info));
2863 pb->eti.ino = pb->ino;
2864
2865 pb->region = region_create(0, info.max_lblk);
2866 if (!pb->region) {
2867 ext2fs_extent_free(ehandle);
2868 fix_problem(ctx, PR_1_EXTENT_ALLOC_REGION_ABORT, pctx);
2869 ctx->flags |= E2F_FLAG_ABORT;
2870 return;
2871 }
2872
2873 eof_lblk = ((EXT2_I_SIZE(inode) + fs->blocksize - 1) >>
2874 EXT2_BLOCK_SIZE_BITS(fs->super)) - 1;
2875 scan_extent_node(ctx, pctx, pb, 0, 0, eof_lblk, ehandle, 1);
2876 if (pctx->errcode &&
2877 fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) {
2878 pb->num_blocks = 0;
2879 inode->i_blocks = 0;
2880 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
2881 "check_blocks_extents");
2882 pctx->errcode = 0;
2883 }
2884 region_free(pb->region);
2885 pb->region = NULL;
2886 ext2fs_extent_free(ehandle);
2887
2888 /* Rebuild unless it's a dir and we're rehashing it */
2889 if (LINUX_S_ISDIR(inode->i_mode) &&
2890 e2fsck_dir_will_be_rehashed(ctx, ino))
2891 return;
2892
2893 if (ctx->options & E2F_OPT_CONVERT_BMAP)
2894 e2fsck_rebuild_extents_later(ctx, ino);
2895 else
2896 e2fsck_should_rebuild_extents(ctx, pctx, &pb->eti, &info);
2897 }
2898
2899 /*
2900 * In fact we don't need to check blocks for an inode with inline data
2901 * because this inode doesn't have any blocks. In this function all
2902 * we need to do is add this inode into dblist when it is a directory.
2903 */
2904 static void check_blocks_inline_data(e2fsck_t ctx, struct problem_context *pctx,
2905 struct process_block_struct *pb)
2906 {
2907 int flags;
2908 size_t inline_data_size = 0;
2909
2910 if (!pb->is_dir) {
2911 pctx->errcode = 0;
2912 return;
2913 }
2914
2915 /* Process the dirents in i_block[] as the "first" block. */
2916 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 0);
2917 if (pctx->errcode)
2918 goto err;
2919
2920 /* Process the dirents in the EA as a "second" block. */
2921 flags = ctx->fs->flags;
2922 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
2923 pctx->errcode = ext2fs_inline_data_size(ctx->fs, pb->ino,
2924 &inline_data_size);
2925 ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
2926 (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
2927 if (pctx->errcode) {
2928 pctx->errcode = 0;
2929 return;
2930 }
2931
2932 if (inline_data_size <= EXT4_MIN_INLINE_DATA_SIZE)
2933 return;
2934
2935 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 1);
2936 if (pctx->errcode)
2937 goto err;
2938
2939 return;
2940 err:
2941 pctx->blk = 0;
2942 pctx->num = 0;
2943 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
2944 ctx->flags |= E2F_FLAG_ABORT;
2945 }
2946
2947 /*
2948 * This subroutine is called on each inode to account for all of the
2949 * blocks used by that inode.
2950 */
2951 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
2952 char *block_buf)
2953 {
2954 ext2_filsys fs = ctx->fs;
2955 struct process_block_struct pb;
2956 ext2_ino_t ino = pctx->ino;
2957 struct ext2_inode *inode = pctx->inode;
2958 unsigned bad_size = 0;
2959 int dirty_inode = 0;
2960 int extent_fs;
2961 int inlinedata_fs;
2962 __u64 size;
2963
2964 pb.ino = ino;
2965 pb.num_blocks = 0;
2966 pb.last_block = -1;
2967 pb.last_init_lblock = -1;
2968 pb.last_db_block = -1;
2969 pb.num_illegal_blocks = 0;
2970 pb.suppress = 0; pb.clear = 0;
2971 pb.fragmented = 0;
2972 pb.compressed = 0;
2973 pb.previous_block = 0;
2974 pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
2975 pb.is_reg = LINUX_S_ISREG(inode->i_mode);
2976 pb.max_blocks = 1 << (31 - fs->super->s_log_block_size);
2977 pb.inode = inode;
2978 pb.pctx = pctx;
2979 pb.ctx = ctx;
2980 pb.inode_modified = 0;
2981 pb.eti.force_rebuild = 0;
2982 pctx->ino = ino;
2983 pctx->errcode = 0;
2984
2985 extent_fs = (ctx->fs->super->s_feature_incompat &
2986 EXT3_FEATURE_INCOMPAT_EXTENTS);
2987 inlinedata_fs = (ctx->fs->super->s_feature_incompat &
2988 EXT4_FEATURE_INCOMPAT_INLINE_DATA);
2989
2990 if (check_ext_attr(ctx, pctx, block_buf)) {
2991 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2992 goto out;
2993 pb.num_blocks++;
2994 }
2995
2996 if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL))
2997 check_blocks_inline_data(ctx, pctx, &pb);
2998 else if (ext2fs_inode_has_valid_blocks2(fs, inode)) {
2999 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
3000 check_blocks_extents(ctx, pctx, &pb);
3001 else {
3002 int flags;
3003 /*
3004 * If we've modified the inode, write it out before
3005 * iterate() tries to use it.
3006 */
3007 if (dirty_inode) {
3008 e2fsck_write_inode(ctx, ino, inode,
3009 "check_blocks");
3010 dirty_inode = 0;
3011 }
3012 flags = fs->flags;
3013 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3014 pctx->errcode = ext2fs_block_iterate3(fs, ino,
3015 pb.is_dir ? BLOCK_FLAG_HOLE : 0,
3016 block_buf, process_block, &pb);
3017 /*
3018 * We do not have uninitialized extents in non extent
3019 * files.
3020 */
3021 pb.last_init_lblock = pb.last_block;
3022 /*
3023 * If iterate() changed a block mapping, we have to
3024 * re-read the inode. If we decide to clear the
3025 * inode after clearing some stuff, we'll re-write the
3026 * bad mappings into the inode!
3027 */
3028 if (pb.inode_modified)
3029 e2fsck_read_inode(ctx, ino, inode,
3030 "check_blocks");
3031 fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3032 (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3033
3034 if (ctx->options & E2F_OPT_CONVERT_BMAP) {
3035 #ifdef DEBUG
3036 printf("bmap rebuild ino=%d\n", ino);
3037 #endif
3038 if (!LINUX_S_ISDIR(inode->i_mode) ||
3039 !e2fsck_dir_will_be_rehashed(ctx, ino))
3040 e2fsck_rebuild_extents_later(ctx, ino);
3041 }
3042 }
3043 }
3044 end_problem_latch(ctx, PR_LATCH_BLOCK);
3045 end_problem_latch(ctx, PR_LATCH_TOOBIG);
3046 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3047 goto out;
3048 if (pctx->errcode)
3049 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
3050
3051 if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) {
3052 if (LINUX_S_ISDIR(inode->i_mode))
3053 ctx->fs_fragmented_dir++;
3054 else
3055 ctx->fs_fragmented++;
3056 }
3057
3058 if (pb.clear) {
3059 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
3060 "check_blocks");
3061 return;
3062 }
3063
3064 if (inode->i_flags & EXT2_INDEX_FL) {
3065 if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
3066 inode->i_flags &= ~EXT2_INDEX_FL;
3067 dirty_inode++;
3068 } else {
3069 e2fsck_add_dx_dir(ctx, ino, pb.last_block+1);
3070 }
3071 }
3072
3073 if (!pb.num_blocks && pb.is_dir &&
3074 !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
3075 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
3076 e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
3077 ctx->fs_directory_count--;
3078 return;
3079 }
3080 }
3081
3082 if (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INODE(ctx->fs->super)) {
3083 quota_data_add(ctx->qctx, inode, ino,
3084 pb.num_blocks * fs->blocksize);
3085 quota_data_inodes(ctx->qctx, inode, ino, +1);
3086 }
3087
3088 if (!(fs->super->s_feature_ro_compat &
3089 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
3090 !(inode->i_flags & EXT4_HUGE_FILE_FL))
3091 pb.num_blocks *= (fs->blocksize / 512);
3092 pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs);
3093 #if 0
3094 printf("inode %u, i_size = %u, last_block = %lld, i_blocks=%llu, num_blocks = %llu\n",
3095 ino, inode->i_size, pb.last_block, ext2fs_inode_i_blocks(fs, inode),
3096 pb.num_blocks);
3097 #endif
3098 if (pb.is_dir) {
3099 int nblock = inode->i_size >> EXT2_BLOCK_SIZE_BITS(fs->super);
3100 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
3101 int flags;
3102 size_t size;
3103 errcode_t err;
3104
3105 size = 0;
3106 flags = ctx->fs->flags;
3107 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3108 err = ext2fs_inline_data_size(ctx->fs, pctx->ino,
3109 &size);
3110 ctx->fs->flags = (flags &
3111 EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3112 (ctx->fs->flags &
3113 ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3114 if (err || size != inode->i_size) {
3115 bad_size = 7;
3116 pctx->num = size;
3117 }
3118 } else if (inode->i_size & (fs->blocksize - 1))
3119 bad_size = 5;
3120 else if (nblock > (pb.last_block + 1))
3121 bad_size = 1;
3122 else if (nblock < (pb.last_block + 1)) {
3123 if (((pb.last_block + 1) - nblock) >
3124 fs->super->s_prealloc_dir_blocks)
3125 bad_size = 2;
3126 }
3127 } else {
3128 e2_blkcnt_t blkpg = ctx->blocks_per_page;
3129
3130 size = EXT2_I_SIZE(inode);
3131 if ((pb.last_init_lblock >= 0) &&
3132 /* allow allocated blocks to end of PAGE_SIZE */
3133 (size < (__u64)pb.last_init_lblock * fs->blocksize) &&
3134 (pb.last_init_lblock / blkpg * blkpg != pb.last_init_lblock ||
3135 size < (__u64)(pb.last_init_lblock & ~(blkpg-1)) *
3136 fs->blocksize))
3137 bad_size = 3;
3138 else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
3139 size > ext2_max_sizes[fs->super->s_log_block_size])
3140 /* too big for a direct/indirect-mapped file */
3141 bad_size = 4;
3142 else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
3143 size >
3144 ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1))
3145 /* too big for an extent-based file - 32bit ee_block */
3146 bad_size = 6;
3147 }
3148 /* i_size for symlinks is checked elsewhere */
3149 if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
3150 /* Did inline_data set pctx->num earlier? */
3151 if (bad_size != 7)
3152 pctx->num = (pb.last_block + 1) * fs->blocksize;
3153 pctx->group = bad_size;
3154 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
3155 if (LINUX_S_ISDIR(inode->i_mode))
3156 pctx->num &= 0xFFFFFFFFULL;
3157 ext2fs_inode_size_set(fs, inode, pctx->num);
3158 if (EXT2_I_SIZE(inode) == 0 &&
3159 (inode->i_flags & EXT4_INLINE_DATA_FL)) {
3160 memset(inode->i_block, 0,
3161 sizeof(inode->i_block));
3162 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
3163 }
3164 dirty_inode++;
3165 }
3166 pctx->num = 0;
3167 }
3168 if (LINUX_S_ISREG(inode->i_mode) &&
3169 ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
3170 ctx->large_files++;
3171 if ((fs->super->s_creator_os == EXT2_OS_LINUX) &&
3172 ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) ||
3173 ((fs->super->s_feature_ro_compat &
3174 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) &&
3175 (inode->i_flags & EXT4_HUGE_FILE_FL) &&
3176 (inode->osd2.linux2.l_i_blocks_hi != 0)))) {
3177 pctx->num = pb.num_blocks;
3178 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
3179 inode->i_blocks = pb.num_blocks;
3180 inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32;
3181 dirty_inode++;
3182 }
3183 pctx->num = 0;
3184 }
3185
3186 /*
3187 * The kernel gets mad if we ask it to allocate bigalloc clusters to
3188 * a block mapped file, so rebuild it as an extent file. We can skip
3189 * symlinks because they're never rewritten.
3190 */
3191 if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
3192 EXT4_FEATURE_RO_COMPAT_BIGALLOC) &&
3193 (LINUX_S_ISREG(inode->i_mode) || LINUX_S_ISDIR(inode->i_mode)) &&
3194 ext2fs_inode_data_blocks2(fs, inode) > 0 &&
3195 (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INO(fs->super)) &&
3196 !(inode->i_flags & (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)) &&
3197 fix_problem(ctx, PR_1_NO_BIGALLOC_BLOCKMAP_FILES, pctx)) {
3198 pctx->errcode = e2fsck_rebuild_extents_later(ctx, ino);
3199 if (pctx->errcode)
3200 goto out;
3201 }
3202
3203 if (ctx->dirs_to_hash && pb.is_dir &&
3204 !(ctx->lost_and_found && ctx->lost_and_found == ino) &&
3205 !(inode->i_flags & EXT2_INDEX_FL) &&
3206 ((inode->i_size / fs->blocksize) >= 3))
3207 e2fsck_rehash_dir_later(ctx, ino);
3208
3209 out:
3210 if (dirty_inode)
3211 e2fsck_write_inode(ctx, ino, inode, "check_blocks");
3212 }
3213
3214 #if 0
3215 /*
3216 * Helper function called by process block when an illegal block is
3217 * found. It returns a description about why the block is illegal
3218 */
3219 static char *describe_illegal_block(ext2_filsys fs, blk64_t block)
3220 {
3221 blk64_t super;
3222 int i;
3223 static char problem[80];
3224
3225 super = fs->super->s_first_data_block;
3226 strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
3227 if (block < super) {
3228 sprintf(problem, "< FIRSTBLOCK (%u)", super);
3229 return(problem);
3230 } else if (block >= ext2fs_blocks_count(fs->super)) {
3231 sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super));
3232 return(problem);
3233 }
3234 for (i = 0; i < fs->group_desc_count; i++) {
3235 if (block == super) {
3236 sprintf(problem, "is the superblock in group %d", i);
3237 break;
3238 }
3239 if (block > super &&
3240 block <= (super + fs->desc_blocks)) {
3241 sprintf(problem, "is in the group descriptors "
3242 "of group %d", i);
3243 break;
3244 }
3245 if (block == ext2fs_block_bitmap_loc(fs, i)) {
3246 sprintf(problem, "is the block bitmap of group %d", i);
3247 break;
3248 }
3249 if (block == ext2fs_inode_bitmap_loc(fs, i)) {
3250 sprintf(problem, "is the inode bitmap of group %d", i);
3251 break;
3252 }
3253 if (block >= ext2fs_inode_table_loc(fs, i) &&
3254 (block < ext2fs_inode_table_loc(fs, i)
3255 + fs->inode_blocks_per_group)) {
3256 sprintf(problem, "is in the inode table of group %d",
3257 i);
3258 break;
3259 }
3260 super += fs->super->s_blocks_per_group;
3261 }
3262 return(problem);
3263 }
3264 #endif
3265
3266 /*
3267 * This is a helper function for check_blocks().
3268 */
3269 static int process_block(ext2_filsys fs,
3270 blk64_t *block_nr,
3271 e2_blkcnt_t blockcnt,
3272 blk64_t ref_block EXT2FS_ATTR((unused)),
3273 int ref_offset EXT2FS_ATTR((unused)),
3274 void *priv_data)
3275 {
3276 struct process_block_struct *p;
3277 struct problem_context *pctx;
3278 blk64_t blk = *block_nr;
3279 int ret_code = 0;
3280 problem_t problem = 0;
3281 e2fsck_t ctx;
3282
3283 p = (struct process_block_struct *) priv_data;
3284 pctx = p->pctx;
3285 ctx = p->ctx;
3286
3287 /*
3288 * For a directory, add logical block zero for processing even if it's
3289 * not mapped or we'll be perennially stuck with broken "." and ".."
3290 * entries.
3291 */
3292 if (p->is_dir && blockcnt == 0 && blk == 0) {
3293 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino, 0, 0);
3294 if (pctx->errcode) {
3295 pctx->blk = blk;
3296 pctx->num = blockcnt;
3297 goto failed_add_dir_block;
3298 }
3299 p->last_db_block++;
3300 }
3301
3302 if (blk == 0)
3303 return 0;
3304
3305 #if 0
3306 printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
3307 blockcnt);
3308 #endif
3309
3310 /*
3311 * Simplistic fragmentation check. We merely require that the
3312 * file be contiguous. (Which can never be true for really
3313 * big files that are greater than a block group.)
3314 */
3315 if (p->previous_block && p->ino != EXT2_RESIZE_INO) {
3316 if (p->previous_block+1 != blk) {
3317 if (ctx->options & E2F_OPT_FRAGCHECK) {
3318 char type = '?';
3319
3320 if (p->is_dir)
3321 type = 'd';
3322 else if (p->is_reg)
3323 type = 'f';
3324
3325 printf(_("%6lu(%c): expecting %6lu "
3326 "got phys %6lu (blkcnt %lld)\n"),
3327 (unsigned long) pctx->ino, type,
3328 (unsigned long) p->previous_block+1,
3329 (unsigned long) blk,
3330 blockcnt);
3331 }
3332 p->fragmented = 1;
3333 }
3334 }
3335
3336 if (p->is_dir && blockcnt > (1 << (21 - fs->super->s_log_block_size)))
3337 problem = PR_1_TOOBIG_DIR;
3338 if (p->is_reg && p->num_blocks+1 >= p->max_blocks)
3339 problem = PR_1_TOOBIG_REG;
3340 if (!p->is_dir && !p->is_reg && blockcnt > 0)
3341 problem = PR_1_TOOBIG_SYMLINK;
3342
3343 if (blk < fs->super->s_first_data_block ||
3344 blk >= ext2fs_blocks_count(fs->super))
3345 problem = PR_1_ILLEGAL_BLOCK_NUM;
3346
3347 /*
3348 * If this IND/DIND/TIND block is squatting atop some critical metadata
3349 * (group descriptors, superblock, bitmap, inode table), any write to
3350 * "fix" mapping problems will destroy the metadata. We'll let pass 1b
3351 * fix that and restart fsck.
3352 */
3353 if (blockcnt < 0 &&
3354 p->ino != EXT2_RESIZE_INO &&
3355 ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk)) {
3356 pctx->blk = blk;
3357 fix_problem(ctx, PR_1_CRITICAL_METADATA_COLLISION, pctx);
3358 ctx->flags |= E2F_FLAG_RESTART_LATER;
3359 }
3360
3361 if (problem) {
3362 p->num_illegal_blocks++;
3363 /*
3364 * A bit of subterfuge here -- we're trying to fix a block
3365 * mapping, but the IND/DIND/TIND block could have collided
3366 * with some critical metadata. So, fix the in-core mapping so
3367 * iterate won't go insane, but return 0 instead of
3368 * BLOCK_CHANGED so that it won't write the remapping out to
3369 * our multiply linked block.
3370 *
3371 * Even if we previously determined that an *IND block
3372 * conflicts with critical metadata, we must still try to
3373 * iterate the *IND block as if it is an *IND block to find and
3374 * mark the blocks it points to. Better to be overly cautious
3375 * with the used_blocks map so that we don't move the *IND
3376 * block to a block that's really in use!
3377 */
3378 if (p->ino != EXT2_RESIZE_INO &&
3379 ref_block != 0 &&
3380 ext2fs_test_block_bitmap2(ctx->block_metadata_map,
3381 ref_block)) {
3382 *block_nr = 0;
3383 return 0;
3384 }
3385 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
3386 if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
3387 p->clear = 1;
3388 return BLOCK_ABORT;
3389 }
3390 if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
3391 p->suppress = 1;
3392 set_latch_flags(PR_LATCH_BLOCK,
3393 PRL_SUPPRESS, 0);
3394 }
3395 }
3396 pctx->blk = blk;
3397 pctx->blkcount = blockcnt;
3398 if (fix_problem(ctx, problem, pctx)) {
3399 blk = *block_nr = 0;
3400 ret_code = BLOCK_CHANGED;
3401 p->inode_modified = 1;
3402 /*
3403 * If the directory block is too big and is beyond the
3404 * end of the FS, don't bother trying to add it for
3405 * processing -- the kernel would never have created a
3406 * directory this large, and we risk an ENOMEM abort.
3407 * In any case, the toobig handler for extent-based
3408 * directories also doesn't feed toobig blocks to
3409 * pass 2.
3410 */
3411 if (problem == PR_1_TOOBIG_DIR)
3412 return ret_code;
3413 goto mark_dir;
3414 } else
3415 return 0;
3416 }
3417
3418 if (p->ino == EXT2_RESIZE_INO) {
3419 /*
3420 * The resize inode has already be sanity checked
3421 * during pass #0 (the superblock checks). All we
3422 * have to do is mark the double indirect block as
3423 * being in use; all of the other blocks are handled
3424 * by mark_table_blocks()).
3425 */
3426 if (blockcnt == BLOCK_COUNT_DIND)
3427 mark_block_used(ctx, blk);
3428 p->num_blocks++;
3429 } else if (!(ctx->fs->cluster_ratio_bits &&
3430 p->previous_block &&
3431 (EXT2FS_B2C(ctx->fs, blk) ==
3432 EXT2FS_B2C(ctx->fs, p->previous_block)) &&
3433 (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
3434 ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
3435 mark_block_used(ctx, blk);
3436 p->num_blocks++;
3437 } else if (has_unaligned_cluster_map(ctx, p->previous_block,
3438 p->last_block, blk, blockcnt)) {
3439 pctx->blk = blockcnt;
3440 pctx->blk2 = blk;
3441 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
3442 mark_block_used(ctx, blk);
3443 mark_block_used(ctx, blk);
3444 }
3445 if (blockcnt >= 0)
3446 p->last_block = blockcnt;
3447 p->previous_block = blk;
3448 mark_dir:
3449 if (p->is_dir && (blockcnt >= 0)) {
3450 while (++p->last_db_block < blockcnt) {
3451 pctx->errcode = ext2fs_add_dir_block2(fs->dblist,
3452 p->ino, 0,
3453 p->last_db_block);
3454 if (pctx->errcode) {
3455 pctx->blk = 0;
3456 pctx->num = p->last_db_block;
3457 goto failed_add_dir_block;
3458 }
3459 }
3460 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino,
3461 blk, blockcnt);
3462 if (pctx->errcode) {
3463 pctx->blk = blk;
3464 pctx->num = blockcnt;
3465 failed_add_dir_block:
3466 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3467 /* Should never get here */
3468 ctx->flags |= E2F_FLAG_ABORT;
3469 return BLOCK_ABORT;
3470 }
3471 }
3472 return ret_code;
3473 }
3474
3475 static int process_bad_block(ext2_filsys fs,
3476 blk64_t *block_nr,
3477 e2_blkcnt_t blockcnt,
3478 blk64_t ref_block EXT2FS_ATTR((unused)),
3479 int ref_offset EXT2FS_ATTR((unused)),
3480 void *priv_data)
3481 {
3482 struct process_block_struct *p;
3483 blk64_t blk = *block_nr;
3484 blk64_t first_block;
3485 dgrp_t i;
3486 struct problem_context *pctx;
3487 e2fsck_t ctx;
3488
3489 if (!blk)
3490 return 0;
3491
3492 p = (struct process_block_struct *) priv_data;
3493 ctx = p->ctx;
3494 pctx = p->pctx;
3495
3496 pctx->ino = EXT2_BAD_INO;
3497 pctx->blk = blk;
3498 pctx->blkcount = blockcnt;
3499
3500 if ((blk < fs->super->s_first_data_block) ||
3501 (blk >= ext2fs_blocks_count(fs->super))) {
3502 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
3503 *block_nr = 0;
3504 return BLOCK_CHANGED;
3505 } else
3506 return 0;
3507 }
3508
3509 if (blockcnt < 0) {
3510 if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) {
3511 p->bbcheck = 1;
3512 if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
3513 *block_nr = 0;
3514 return BLOCK_CHANGED;
3515 }
3516 } else if (ext2fs_test_block_bitmap2(ctx->block_found_map,
3517 blk)) {
3518 p->bbcheck = 1;
3519 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
3520 pctx)) {
3521 *block_nr = 0;
3522 return BLOCK_CHANGED;
3523 }
3524 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3525 return BLOCK_ABORT;
3526 } else
3527 mark_block_used(ctx, blk);
3528 return 0;
3529 }
3530 #if 0
3531 printf ("DEBUG: Marking %u as bad.\n", blk);
3532 #endif
3533 ctx->fs_badblocks_count++;
3534 /*
3535 * If the block is not used, then mark it as used and return.
3536 * If it is already marked as found, this must mean that
3537 * there's an overlap between the filesystem table blocks
3538 * (bitmaps and inode table) and the bad block list.
3539 */
3540 if (!ext2fs_test_block_bitmap2(ctx->block_found_map, blk)) {
3541 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
3542 return 0;
3543 }
3544 /*
3545 * Try to find the where the filesystem block was used...
3546 */
3547 first_block = fs->super->s_first_data_block;
3548
3549 for (i = 0; i < fs->group_desc_count; i++ ) {
3550 pctx->group = i;
3551 pctx->blk = blk;
3552 if (!ext2fs_bg_has_super(fs, i))
3553 goto skip_super;
3554 if (blk == first_block) {
3555 if (i == 0) {
3556 if (fix_problem(ctx,
3557 PR_1_BAD_PRIMARY_SUPERBLOCK,
3558 pctx)) {
3559 *block_nr = 0;
3560 return BLOCK_CHANGED;
3561 }
3562 return 0;
3563 }
3564 fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
3565 return 0;
3566 }
3567 if ((blk > first_block) &&
3568 (blk <= first_block + fs->desc_blocks)) {
3569 if (i == 0) {
3570 pctx->blk = *block_nr;
3571 if (fix_problem(ctx,
3572 PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
3573 *block_nr = 0;
3574 return BLOCK_CHANGED;
3575 }
3576 return 0;
3577 }
3578 fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
3579 return 0;
3580 }
3581 skip_super:
3582 if (blk == ext2fs_block_bitmap_loc(fs, i)) {
3583 if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
3584 ctx->invalid_block_bitmap_flag[i]++;
3585 ctx->invalid_bitmaps++;
3586 }
3587 return 0;
3588 }
3589 if (blk == ext2fs_inode_bitmap_loc(fs, i)) {
3590 if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
3591 ctx->invalid_inode_bitmap_flag[i]++;
3592 ctx->invalid_bitmaps++;
3593 }
3594 return 0;
3595 }
3596 if ((blk >= ext2fs_inode_table_loc(fs, i)) &&
3597 (blk < (ext2fs_inode_table_loc(fs, i) +
3598 fs->inode_blocks_per_group))) {
3599 /*
3600 * If there are bad blocks in the inode table,
3601 * the inode scan code will try to do
3602 * something reasonable automatically.
3603 */
3604 return 0;
3605 }
3606 first_block += fs->super->s_blocks_per_group;
3607 }
3608 /*
3609 * If we've gotten to this point, then the only
3610 * possibility is that the bad block inode meta data
3611 * is using a bad block.
3612 */
3613 if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
3614 (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
3615 (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
3616 p->bbcheck = 1;
3617 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
3618 *block_nr = 0;
3619 return BLOCK_CHANGED;
3620 }
3621 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3622 return BLOCK_ABORT;
3623 return 0;
3624 }
3625
3626 pctx->group = -1;
3627
3628 /* Warn user that the block wasn't claimed */
3629 fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
3630
3631 return 0;
3632 }
3633
3634 static void new_table_block(e2fsck_t ctx, blk64_t first_block, dgrp_t group,
3635 const char *name, int num, blk64_t *new_block)
3636 {
3637 ext2_filsys fs = ctx->fs;
3638 dgrp_t last_grp;
3639 blk64_t old_block = *new_block;
3640 blk64_t last_block;
3641 dgrp_t flexbg;
3642 unsigned flexbg_size;
3643 int i, is_flexbg;
3644 char *buf;
3645 struct problem_context pctx;
3646
3647 clear_problem_context(&pctx);
3648
3649 pctx.group = group;
3650 pctx.blk = old_block;
3651 pctx.str = name;
3652
3653 /*
3654 * For flex_bg filesystems, first try to allocate the metadata
3655 * within the flex_bg, and if that fails then try finding the
3656 * space anywhere in the filesystem.
3657 */
3658 is_flexbg = EXT2_HAS_INCOMPAT_FEATURE(fs->super,
3659 EXT4_FEATURE_INCOMPAT_FLEX_BG);
3660 if (is_flexbg) {
3661 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
3662 flexbg = group / flexbg_size;
3663 first_block = ext2fs_group_first_block2(fs,
3664 flexbg_size * flexbg);
3665 last_grp = group | (flexbg_size - 1);
3666 if (last_grp >= fs->group_desc_count)
3667 last_grp = fs->group_desc_count - 1;
3668 last_block = ext2fs_group_last_block2(fs, last_grp);
3669 } else
3670 last_block = ext2fs_group_last_block2(fs, group);
3671 pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block,
3672 num, ctx->block_found_map,
3673 new_block);
3674 if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL))
3675 pctx.errcode = ext2fs_get_free_blocks2(fs,
3676 fs->super->s_first_data_block,
3677 ext2fs_blocks_count(fs->super),
3678 num, ctx->block_found_map, new_block);
3679 if (pctx.errcode) {
3680 pctx.num = num;
3681 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
3682 ext2fs_unmark_valid(fs);
3683 ctx->flags |= E2F_FLAG_ABORT;
3684 return;
3685 }
3686 pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
3687 if (pctx.errcode) {
3688 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
3689 ext2fs_unmark_valid(fs);
3690 ctx->flags |= E2F_FLAG_ABORT;
3691 return;
3692 }
3693 ext2fs_mark_super_dirty(fs);
3694 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
3695 pctx.blk2 = *new_block;
3696 fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
3697 PR_1_RELOC_TO), &pctx);
3698 pctx.blk2 = 0;
3699 for (i = 0; i < num; i++) {
3700 pctx.blk = i;
3701 ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i);
3702 if (old_block) {
3703 pctx.errcode = io_channel_read_blk64(fs->io,
3704 old_block + i, 1, buf);
3705 if (pctx.errcode)
3706 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
3707 pctx.blk = (*new_block) + i;
3708 pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk,
3709 1, buf);
3710 } else {
3711 pctx.blk = (*new_block) + i;
3712 pctx.errcode = ext2fs_zero_blocks2(fs, pctx.blk, 1,
3713 NULL, NULL);
3714 }
3715
3716 if (pctx.errcode)
3717 fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
3718 }
3719 ext2fs_free_mem(&buf);
3720 }
3721
3722 /*
3723 * This routine gets called at the end of pass 1 if bad blocks are
3724 * detected in the superblock, group descriptors, inode_bitmaps, or
3725 * block bitmaps. At this point, all of the blocks have been mapped
3726 * out, so we can try to allocate new block(s) to replace the bad
3727 * blocks.
3728 */
3729 static void handle_fs_bad_blocks(e2fsck_t ctx)
3730 {
3731 ext2_filsys fs = ctx->fs;
3732 dgrp_t i;
3733 blk64_t first_block;
3734 blk64_t new_blk;
3735
3736 for (i = 0; i < fs->group_desc_count; i++) {
3737 first_block = ext2fs_group_first_block2(fs, i);
3738
3739 if (ctx->invalid_block_bitmap_flag[i]) {
3740 new_blk = ext2fs_block_bitmap_loc(fs, i);
3741 new_table_block(ctx, first_block, i, _("block bitmap"),
3742 1, &new_blk);
3743 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
3744 }
3745 if (ctx->invalid_inode_bitmap_flag[i]) {
3746 new_blk = ext2fs_inode_bitmap_loc(fs, i);
3747 new_table_block(ctx, first_block, i, _("inode bitmap"),
3748 1, &new_blk);
3749 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
3750 }
3751 if (ctx->invalid_inode_table_flag[i]) {
3752 new_blk = ext2fs_inode_table_loc(fs, i);
3753 new_table_block(ctx, first_block, i, _("inode table"),
3754 fs->inode_blocks_per_group,
3755 &new_blk);
3756 ext2fs_inode_table_loc_set(fs, i, new_blk);
3757 ctx->flags |= E2F_FLAG_RESTART;
3758 }
3759 }
3760 ctx->invalid_bitmaps = 0;
3761 }
3762
3763 /*
3764 * This routine marks all blocks which are used by the superblock,
3765 * group descriptors, inode bitmaps, and block bitmaps.
3766 */
3767 static void mark_table_blocks(e2fsck_t ctx)
3768 {
3769 ext2_filsys fs = ctx->fs;
3770 blk64_t b;
3771 dgrp_t i;
3772 unsigned int j;
3773 struct problem_context pctx;
3774
3775 clear_problem_context(&pctx);
3776
3777 for (i = 0; i < fs->group_desc_count; i++) {
3778 pctx.group = i;
3779
3780 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
3781 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_metadata_map);
3782
3783 /*
3784 * Mark the blocks used for the inode table
3785 */
3786 if (ext2fs_inode_table_loc(fs, i)) {
3787 for (j = 0, b = ext2fs_inode_table_loc(fs, i);
3788 j < fs->inode_blocks_per_group;
3789 j++, b++) {
3790 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
3791 b)) {
3792 pctx.blk = b;
3793 if (!ctx->invalid_inode_table_flag[i] &&
3794 fix_problem(ctx,
3795 PR_1_ITABLE_CONFLICT, &pctx)) {
3796 ctx->invalid_inode_table_flag[i]++;
3797 ctx->invalid_bitmaps++;
3798 }
3799 } else {
3800 ext2fs_mark_block_bitmap2(
3801 ctx->block_found_map, b);
3802 ext2fs_mark_block_bitmap2(
3803 ctx->block_metadata_map, b);
3804 }
3805 }
3806 }
3807
3808 /*
3809 * Mark block used for the block bitmap
3810 */
3811 if (ext2fs_block_bitmap_loc(fs, i)) {
3812 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
3813 ext2fs_block_bitmap_loc(fs, i))) {
3814 pctx.blk = ext2fs_block_bitmap_loc(fs, i);
3815 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
3816 ctx->invalid_block_bitmap_flag[i]++;
3817 ctx->invalid_bitmaps++;
3818 }
3819 } else {
3820 ext2fs_mark_block_bitmap2(ctx->block_found_map,
3821 ext2fs_block_bitmap_loc(fs, i));
3822 ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
3823 ext2fs_block_bitmap_loc(fs, i));
3824 }
3825 }
3826 /*
3827 * Mark block used for the inode bitmap
3828 */
3829 if (ext2fs_inode_bitmap_loc(fs, i)) {
3830 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
3831 ext2fs_inode_bitmap_loc(fs, i))) {
3832 pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
3833 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
3834 ctx->invalid_inode_bitmap_flag[i]++;
3835 ctx->invalid_bitmaps++;
3836 }
3837 } else {
3838 ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
3839 ext2fs_inode_bitmap_loc(fs, i));
3840 ext2fs_mark_block_bitmap2(ctx->block_found_map,
3841 ext2fs_inode_bitmap_loc(fs, i));
3842 }
3843 }
3844 }
3845 }
3846
3847 /*
3848 * Thes subroutines short circuits ext2fs_get_blocks and
3849 * ext2fs_check_directory; we use them since we already have the inode
3850 * structure, so there's no point in letting the ext2fs library read
3851 * the inode again.
3852 */
3853 static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
3854 blk_t *blocks)
3855 {
3856 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
3857 int i;
3858
3859 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
3860 return EXT2_ET_CALLBACK_NOTHANDLED;
3861
3862 for (i=0; i < EXT2_N_BLOCKS; i++)
3863 blocks[i] = ctx->stashed_inode->i_block[i];
3864 return 0;
3865 }
3866
3867 static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
3868 struct ext2_inode *inode)
3869 {
3870 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
3871
3872 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
3873 return EXT2_ET_CALLBACK_NOTHANDLED;
3874 *inode = *ctx->stashed_inode;
3875 return 0;
3876 }
3877
3878 static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
3879 struct ext2_inode *inode)
3880 {
3881 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
3882
3883 if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
3884 (inode != ctx->stashed_inode))
3885 *ctx->stashed_inode = *inode;
3886 return EXT2_ET_CALLBACK_NOTHANDLED;
3887 }
3888
3889 static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
3890 {
3891 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
3892
3893 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
3894 return EXT2_ET_CALLBACK_NOTHANDLED;
3895
3896 if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
3897 return EXT2_ET_NO_DIRECTORY;
3898 return 0;
3899 }
3900
3901 static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal,
3902 blk64_t *ret)
3903 {
3904 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
3905 errcode_t retval;
3906 blk64_t new_block;
3907
3908 if (ctx->block_found_map) {
3909 retval = ext2fs_new_block2(fs, goal, ctx->block_found_map,
3910 &new_block);
3911 if (retval)
3912 return retval;
3913 if (fs->block_map) {
3914 ext2fs_mark_block_bitmap2(fs->block_map, new_block);
3915 ext2fs_mark_bb_dirty(fs);
3916 }
3917 } else {
3918 if (!fs->block_map) {
3919 retval = ext2fs_read_block_bitmap(fs);
3920 if (retval)
3921 return retval;
3922 }
3923
3924 retval = ext2fs_new_block2(fs, goal, fs->block_map, &new_block);
3925 if (retval)
3926 return retval;
3927 }
3928
3929 *ret = new_block;
3930 return (0);
3931 }
3932
3933 static errcode_t e2fsck_new_range(ext2_filsys fs, int flags, blk64_t goal,
3934 blk64_t len, blk64_t *pblk, blk64_t *plen)
3935 {
3936 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
3937 errcode_t retval;
3938
3939 if (ctx->block_found_map)
3940 return ext2fs_new_range(fs, flags, goal, len,
3941 ctx->block_found_map, pblk, plen);
3942
3943 if (!fs->block_map) {
3944 retval = ext2fs_read_block_bitmap(fs);
3945 if (retval)
3946 return retval;
3947 }
3948
3949 return ext2fs_new_range(fs, flags, goal, len, fs->block_map,
3950 pblk, plen);
3951 }
3952
3953 static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
3954 {
3955 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
3956
3957 /* Never free a critical metadata block */
3958 if (ctx->block_found_map &&
3959 ctx->block_metadata_map &&
3960 inuse < 0 &&
3961 ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk))
3962 return;
3963
3964 if (ctx->block_found_map) {
3965 if (inuse > 0)
3966 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
3967 else
3968 ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk);
3969 }
3970 }
3971
3972 static void e2fsck_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
3973 blk_t num, int inuse)
3974 {
3975 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
3976
3977 /* Never free a critical metadata block */
3978 if (ctx->block_found_map &&
3979 ctx->block_metadata_map &&
3980 inuse < 0 &&
3981 ext2fs_test_block_bitmap_range2(ctx->block_metadata_map, blk, num))
3982 return;
3983
3984 if (ctx->block_found_map) {
3985 if (inuse > 0)
3986 ext2fs_mark_block_bitmap_range2(ctx->block_found_map,
3987 blk, num);
3988 else
3989 ext2fs_unmark_block_bitmap_range2(ctx->block_found_map,
3990 blk, num);
3991 }
3992 }
3993
3994 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts)
3995 {
3996 ext2_filsys fs = ctx->fs;
3997
3998 if (use_shortcuts) {
3999 fs->get_blocks = pass1_get_blocks;
4000 fs->check_directory = pass1_check_directory;
4001 fs->read_inode = pass1_read_inode;
4002 fs->write_inode = pass1_write_inode;
4003 ctx->stashed_ino = 0;
4004 } else {
4005 fs->get_blocks = 0;
4006 fs->check_directory = 0;
4007 fs->read_inode = 0;
4008 fs->write_inode = 0;
4009 }
4010 }
4011
4012 void e2fsck_intercept_block_allocations(e2fsck_t ctx)
4013 {
4014 ext2fs_set_alloc_block_callback(ctx->fs, e2fsck_get_alloc_block, 0);
4015 ext2fs_set_block_alloc_stats_callback(ctx->fs,
4016 e2fsck_block_alloc_stats, 0);
4017 ext2fs_set_new_range_callback(ctx->fs, e2fsck_new_range, NULL);
4018 ext2fs_set_block_alloc_stats_range_callback(ctx->fs,
4019 e2fsck_block_alloc_stats_range, NULL);
4020 }
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