2 * pass1.c -- pass #1 of e2fsck: sequential scan of the inode table
4 * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
7 * This file may be redistributed under the terms of the GNU Public
11 * Pass 1 of e2fsck iterates over all the inodes in the filesystems,
12 * and applies the following tests to each inode:
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
18 * Pass 1 also gathers the collects the following information:
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)
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
36 * Note that pass 1B will be invoked if there are any duplicate blocks
40 #define _GNU_SOURCE 1 /* get strnlen() */
48 #include <ext2fs/ext2_ext_attr.h>
52 #ifdef NO_INLINE_FUNCS
55 #define _INLINE_ inline
58 static int process_block(ext2_filsys fs, blk64_t *blocknr,
59 e2_blkcnt_t blockcnt, blk64_t ref_blk,
60 int ref_offset, void *priv_data);
61 static int process_bad_block(ext2_filsys fs, blk64_t *block_nr,
62 e2_blkcnt_t blockcnt, blk64_t ref_blk,
63 int ref_offset, void *priv_data);
64 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
66 static void mark_table_blocks(e2fsck_t ctx);
67 static void alloc_bb_map(e2fsck_t ctx);
68 static void alloc_imagic_map(e2fsck_t ctx);
69 static void mark_inode_bad(e2fsck_t ctx, ino_t ino);
70 static void handle_fs_bad_blocks(e2fsck_t ctx);
71 static void process_inodes(e2fsck_t ctx, char *block_buf);
72 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b);
73 static errcode_t scan_callback(ext2_filsys fs, ext2_inode_scan scan,
74 dgrp_t group, void * priv_data);
75 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
76 char *block_buf, int adjust_sign);
77 /* static char *describe_illegal_block(ext2_filsys fs, blk64_t block); */
79 struct process_block_struct {
81 unsigned is_dir:1, is_reg:1, clear:1, suppress:1,
82 fragmented:1, compressed:1, bbcheck:1;
85 e2_blkcnt_t last_block;
86 e2_blkcnt_t last_db_block;
87 int num_illegal_blocks;
88 blk64_t previous_block;
89 struct ext2_inode *inode;
90 struct problem_context *pctx;
91 ext2fs_block_bitmap fs_meta_blocks;
95 struct process_inode_block {
97 struct ext2_inode inode;
100 struct scan_callback_struct {
106 * For the inodes to process list.
108 static struct process_inode_block *inodes_to_process;
109 static int process_inode_count;
111 static __u64 ext2_max_sizes[EXT2_MAX_BLOCK_LOG_SIZE -
112 EXT2_MIN_BLOCK_LOG_SIZE + 1];
115 * Free all memory allocated by pass1 in preparation for restarting
118 static void unwind_pass1(ext2_filsys fs EXT2FS_ATTR((unused)))
120 ext2fs_free_mem(&inodes_to_process);
121 inodes_to_process = 0;
125 * Check to make sure a device inode is real. Returns 1 if the device
126 * checks out, 0 if not.
128 * Note: this routine is now also used to check FIFO's and Sockets,
129 * since they have the same requirement; the i_block fields should be
132 int e2fsck_pass1_check_device_inode(ext2_filsys fs EXT2FS_ATTR((unused)),
133 struct ext2_inode *inode)
138 * If the index flag is set, then this is a bogus
141 if (inode->i_flags & EXT2_INDEX_FL)
145 * We should be able to do the test below all the time, but
146 * because the kernel doesn't forcibly clear the device
147 * inode's additional i_block fields, there are some rare
148 * occasions when a legitimate device inode will have non-zero
149 * additional i_block fields. So for now, we only complain
150 * when the immutable flag is set, which should never happen
151 * for devices. (And that's when the problem is caused, since
152 * you can't set or clear immutable flags for devices.) Once
153 * the kernel has been fixed we can change this...
155 if (inode->i_flags & (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)) {
156 for (i=4; i < EXT2_N_BLOCKS; i++)
157 if (inode->i_block[i])
164 * Check to make sure a symlink inode is real. Returns 1 if the symlink
165 * checks out, 0 if not.
167 int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino,
168 struct ext2_inode *inode, char *buf)
173 ext2_extent_handle_t handle;
174 struct ext2_extent_info info;
175 struct ext2fs_extent extent;
177 if ((inode->i_size_high || inode->i_size == 0) ||
178 (inode->i_flags & EXT2_INDEX_FL))
181 if (inode->i_flags & EXT4_EXTENTS_FL) {
182 if (inode->i_size > fs->blocksize)
184 if (ext2fs_extent_open2(fs, ino, inode, &handle))
187 if (ext2fs_extent_get_info(handle, &info) ||
188 (info.num_entries != 1) ||
189 (info.max_depth != 0))
191 if (ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent) ||
192 (extent.e_lblk != 0) ||
193 (extent.e_len != 1) ||
194 (extent.e_pblk < fs->super->s_first_data_block) ||
195 (extent.e_pblk >= ext2fs_blocks_count(fs->super)))
199 ext2fs_extent_free(handle);
203 blocks = ext2fs_inode_data_blocks2(fs, inode);
205 if ((inode->i_size >= fs->blocksize) ||
206 (blocks != fs->blocksize >> 9) ||
207 (inode->i_block[0] < fs->super->s_first_data_block) ||
208 (inode->i_block[0] >= ext2fs_blocks_count(fs->super)))
211 for (i = 1; i < EXT2_N_BLOCKS; i++)
212 if (inode->i_block[i])
215 if (io_channel_read_blk64(fs->io, inode->i_block[0], 1, buf))
218 len = strnlen(buf, fs->blocksize);
219 if (len == fs->blocksize)
222 if (inode->i_size >= sizeof(inode->i_block))
225 len = strnlen((char *)inode->i_block, sizeof(inode->i_block));
226 if (len == sizeof(inode->i_block))
229 if (len != inode->i_size)
235 * If the immutable (or append-only) flag is set on the inode, offer
238 #define BAD_SPECIAL_FLAGS (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)
239 static void check_immutable(e2fsck_t ctx, struct problem_context *pctx)
241 if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
244 if (!fix_problem(ctx, PR_1_SET_IMMUTABLE, pctx))
247 pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
248 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
252 * If device, fifo or socket, check size is zero -- if not offer to
255 static void check_size(e2fsck_t ctx, struct problem_context *pctx)
257 struct ext2_inode *inode = pctx->inode;
259 if (EXT2_I_SIZE(inode) == 0)
262 if (!fix_problem(ctx, PR_1_SET_NONZSIZE, pctx))
266 inode->i_size_high = 0;
267 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
270 static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx)
272 struct ext2_super_block *sb = ctx->fs->super;
273 struct ext2_inode_large *inode;
274 struct ext2_ext_attr_entry *entry;
276 unsigned int storage_size, remain;
279 inode = (struct ext2_inode_large *) pctx->inode;
280 storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE -
281 inode->i_extra_isize;
282 start = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
283 inode->i_extra_isize + sizeof(__u32);
284 end = (char *) inode + EXT2_INODE_SIZE(ctx->fs->super);
285 entry = (struct ext2_ext_attr_entry *) start;
287 /* scan all entry's headers first */
289 /* take finish entry 0UL into account */
290 remain = storage_size - sizeof(__u32);
292 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
295 /* header eats this space */
296 remain -= sizeof(struct ext2_ext_attr_entry);
298 /* is attribute name valid? */
299 if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) {
300 pctx->num = entry->e_name_len;
301 problem = PR_1_ATTR_NAME_LEN;
305 /* attribute len eats this space */
306 remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
308 /* check value size */
309 if (entry->e_value_size == 0 || entry->e_value_size > remain) {
310 pctx->num = entry->e_value_size;
311 problem = PR_1_ATTR_VALUE_SIZE;
315 /* e_value_block must be 0 in inode's ea */
316 if (entry->e_value_block != 0) {
317 pctx->num = entry->e_value_block;
318 problem = PR_1_ATTR_VALUE_BLOCK;
322 hash = ext2fs_ext_attr_hash_entry(entry,
323 start + entry->e_value_offs);
325 /* e_hash may be 0 in older inode's ea */
326 if (entry->e_hash != 0 && entry->e_hash != hash) {
327 pctx->num = entry->e_hash;
328 problem = PR_1_ATTR_HASH;
332 remain -= entry->e_value_size;
334 entry = EXT2_EXT_ATTR_NEXT(entry);
338 * it seems like a corruption. it's very unlikely we could repair
339 * EA(s) in automatic fashion -bzzz
341 if (problem == 0 || !fix_problem(ctx, problem, pctx))
344 /* simply remove all possible EA(s) */
345 *((__u32 *)start) = 0UL;
346 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
347 EXT2_INODE_SIZE(sb), "pass1");
350 static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx)
352 struct ext2_super_block *sb = ctx->fs->super;
353 struct ext2_inode_large *inode;
357 inode = (struct ext2_inode_large *) pctx->inode;
358 if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) {
359 /* this isn't large inode. so, nothing to check */
364 printf("inode #%u, i_extra_size %d\n", pctx->ino,
365 inode->i_extra_isize);
367 /* i_extra_isize must cover i_extra_isize + i_pad1 at least */
368 min = sizeof(inode->i_extra_isize) + sizeof(inode->i_pad1);
369 max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE;
371 * For now we will allow i_extra_isize to be 0, but really
372 * implementations should never allow i_extra_isize to be 0
374 if (inode->i_extra_isize &&
375 (inode->i_extra_isize < min || inode->i_extra_isize > max)) {
376 if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
378 inode->i_extra_isize = min;
379 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
380 EXT2_INODE_SIZE(sb), "pass1");
384 eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
385 inode->i_extra_isize);
386 if (*eamagic == EXT2_EXT_ATTR_MAGIC) {
387 /* it seems inode has an extended attribute(s) in body */
388 check_ea_in_inode(ctx, pctx);
393 * Check to see if the inode might really be a directory, despite i_mode
395 * This is a lot of complexity for something for which I'm not really
396 * convinced happens frequently in the wild. If for any reason this
397 * causes any problems, take this code out.
398 * [tytso:20070331.0827EDT]
400 static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
403 struct ext2_inode *inode = pctx->inode;
404 struct ext2_dir_entry *dirent;
408 unsigned int i, rec_len, not_device = 0;
412 * If the mode looks OK, we believe it. If the first block in
413 * the i_block array is 0, this cannot be a directory. If the
414 * inode is extent-mapped, it is still the case that the latter
415 * cannot be 0 - the magic number in the extent header would make
418 if (LINUX_S_ISDIR(inode->i_mode) || LINUX_S_ISREG(inode->i_mode) ||
419 LINUX_S_ISLNK(inode->i_mode) || inode->i_block[0] == 0)
423 * Check the block numbers in the i_block array for validity:
424 * zero blocks are skipped (but the first one cannot be zero -
425 * see above), other blocks are checked against the first and
426 * max data blocks (from the the superblock) and against the
427 * block bitmap. Any invalid block found means this cannot be
430 * If there are non-zero blocks past the fourth entry, then
431 * this cannot be a device file: we remember that for the next
434 * For extent mapped files, we don't do any sanity checking:
435 * just try to get the phys block of logical block 0 and run
439 extent_fs = (ctx->fs->super->s_feature_incompat &
440 EXT3_FEATURE_INCOMPAT_EXTENTS);
441 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) {
443 if (ext2fs_bmap2(ctx->fs, pctx->ino, inode, 0, 0, 0, 0,
446 /* device files are never extent mapped */
449 for (i=0; i < EXT2_N_BLOCKS; i++) {
450 blk = inode->i_block[i];
456 if (blk < ctx->fs->super->s_first_data_block ||
457 blk >= ext2fs_blocks_count(ctx->fs->super) ||
458 ext2fs_fast_test_block_bitmap2(ctx->block_found_map,
460 return; /* Invalid block, can't be dir */
462 blk = inode->i_block[0];
466 * If the mode says this is a device file and the i_links_count field
467 * is sane and we have not ruled it out as a device file previously,
468 * we declare it a device file, not a directory.
470 if ((LINUX_S_ISCHR(inode->i_mode) || LINUX_S_ISBLK(inode->i_mode)) &&
471 (inode->i_links_count == 1) && !not_device)
474 /* read the first block */
475 old_op = ehandler_operation(_("reading directory block"));
476 retval = ext2fs_read_dir_block3(ctx->fs, blk, buf, 0);
477 ehandler_operation(0);
481 dirent = (struct ext2_dir_entry *) buf;
482 retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
485 if (((dirent->name_len & 0xFF) != 1) ||
486 (dirent->name[0] != '.') ||
487 (dirent->inode != pctx->ino) ||
490 (rec_len >= ctx->fs->blocksize - 12))
493 dirent = (struct ext2_dir_entry *) (buf + rec_len);
494 retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
497 if (((dirent->name_len & 0xFF) != 2) ||
498 (dirent->name[0] != '.') ||
499 (dirent->name[1] != '.') ||
504 if (fix_problem(ctx, PR_1_TREAT_AS_DIRECTORY, pctx)) {
505 inode->i_mode = (inode->i_mode & 07777) | LINUX_S_IFDIR;
506 e2fsck_write_inode_full(ctx, pctx->ino, inode,
507 EXT2_INODE_SIZE(ctx->fs->super),
508 "check_is_really_dir");
512 extern void e2fsck_setup_tdb_icount(e2fsck_t ctx, int flags,
515 unsigned int threshold;
523 profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
525 profile_get_uint(ctx->profile, "scratch_files",
526 "numdirs_threshold", 0, 0, &threshold);
527 profile_get_boolean(ctx->profile, "scratch_files",
528 "icount", 0, 1, &enable);
530 retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
532 num_dirs = 1024; /* Guess */
534 if (!enable || !tdb_dir || access(tdb_dir, W_OK) ||
535 (threshold && num_dirs <= threshold))
538 retval = ext2fs_create_icount_tdb(ctx->fs, tdb_dir, flags, ret);
543 void e2fsck_pass1(e2fsck_t ctx)
547 ext2_filsys fs = ctx->fs;
549 struct ext2_inode *inode;
550 ext2_inode_scan scan;
552 #ifdef RESOURCE_TRACK
553 struct resource_track rtrack;
555 unsigned char frag, fsize;
556 struct problem_context pctx;
557 struct scan_callback_struct scan_struct;
558 struct ext2_super_block *sb = ctx->fs->super;
560 int imagic_fs, extent_fs;
561 int busted_fs_time = 0;
564 init_resource_track(&rtrack, ctx->fs->io);
565 clear_problem_context(&pctx);
567 if (!(ctx->options & E2F_OPT_PREEN))
568 fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
570 if ((fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) &&
571 !(ctx->options & E2F_OPT_NO)) {
572 if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
573 ctx->dirs_to_hash = 0;
577 mtrace_print("Pass 1");
580 #define EXT2_BPP(bits) (1ULL << ((bits) - 2))
582 for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
583 max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
584 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
585 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
586 max_sizes = (max_sizes * (1UL << i)) - 1;
587 ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
591 imagic_fs = (sb->s_feature_compat & EXT2_FEATURE_COMPAT_IMAGIC_INODES);
592 extent_fs = (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS);
595 * Allocate bitmaps structures
597 pctx.errcode = ext2fs_allocate_inode_bitmap(fs, _("in-use inode map"),
598 &ctx->inode_used_map);
601 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
602 ctx->flags |= E2F_FLAG_ABORT;
605 pctx.errcode = ext2fs_allocate_inode_bitmap(fs,
606 _("directory inode map"), &ctx->inode_dir_map);
609 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
610 ctx->flags |= E2F_FLAG_ABORT;
613 pctx.errcode = ext2fs_allocate_inode_bitmap(fs,
614 _("regular file inode map"), &ctx->inode_reg_map);
617 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
618 ctx->flags |= E2F_FLAG_ABORT;
621 pctx.errcode = ext2fs_allocate_subcluster_bitmap(fs,
622 _("in-use block map"),
623 &ctx->block_found_map);
626 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
627 ctx->flags |= E2F_FLAG_ABORT;
630 e2fsck_setup_tdb_icount(ctx, 0, &ctx->inode_link_info);
631 if (!ctx->inode_link_info)
632 pctx.errcode = ext2fs_create_icount2(fs, 0, 0, 0,
633 &ctx->inode_link_info);
635 fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
636 ctx->flags |= E2F_FLAG_ABORT;
639 inode_size = EXT2_INODE_SIZE(fs->super);
640 inode = (struct ext2_inode *)
641 e2fsck_allocate_memory(ctx, inode_size, "scratch inode");
643 inodes_to_process = (struct process_inode_block *)
644 e2fsck_allocate_memory(ctx,
645 (ctx->process_inode_size *
646 sizeof(struct process_inode_block)),
647 "array of inodes to process");
648 process_inode_count = 0;
650 pctx.errcode = ext2fs_init_dblist(fs, 0);
652 fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
653 ctx->flags |= E2F_FLAG_ABORT;
654 ext2fs_free_mem(&inode);
659 * If the last orphan field is set, clear it, since the pass1
660 * processing will automatically find and clear the orphans.
661 * In the future, we may want to try using the last_orphan
662 * linked list ourselves, but for now, we clear it so that the
663 * ext3 mount code won't get confused.
665 if (!(ctx->options & E2F_OPT_READONLY)) {
666 if (fs->super->s_last_orphan) {
667 fs->super->s_last_orphan = 0;
668 ext2fs_mark_super_dirty(fs);
672 mark_table_blocks(ctx);
673 pctx.errcode = ext2fs_convert_subcluster_bitmap(fs,
674 &ctx->block_found_map);
676 fix_problem(ctx, PR_1_CONVERT_SUBCLUSTER, &pctx);
677 ctx->flags |= E2F_FLAG_ABORT;
678 ext2fs_free_mem(&inode);
681 block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
682 "block interate buffer");
683 e2fsck_use_inode_shortcuts(ctx, 1);
684 old_op = ehandler_operation(_("opening inode scan"));
685 pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
687 ehandler_operation(old_op);
689 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
690 ctx->flags |= E2F_FLAG_ABORT;
691 ext2fs_free_mem(&block_buf);
692 ext2fs_free_mem(&inode);
695 ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE, 0);
696 ctx->stashed_inode = inode;
697 scan_struct.ctx = ctx;
698 scan_struct.block_buf = block_buf;
699 ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
701 if ((ctx->progress)(ctx, 1, 0, ctx->fs->group_desc_count))
703 if ((fs->super->s_wtime < fs->super->s_inodes_count) ||
704 (fs->super->s_mtime < fs->super->s_inodes_count))
708 old_op = ehandler_operation(_("getting next inode from scan"));
709 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
711 ehandler_operation(old_op);
712 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
714 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
715 if (!ctx->inode_bb_map)
717 ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino);
718 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
722 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
723 ctx->flags |= E2F_FLAG_ABORT;
730 ctx->stashed_ino = ino;
731 if (inode->i_links_count) {
732 pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
733 ino, inode->i_links_count);
735 pctx.num = inode->i_links_count;
736 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
737 ctx->flags |= E2F_FLAG_ABORT;
743 * Test for incorrect extent flag settings.
745 * On big-endian machines we must be careful:
746 * When the inode is read, the i_block array is not swapped
747 * if the extent flag is set. Therefore if we are testing
748 * for or fixing a wrongly-set flag, we must potentially
749 * (un)swap before testing, or after fixing.
753 * In this case the extents flag was set when read, so
754 * extent_header_verify is ok. If the inode is cleared,
755 * no need to swap... so no extra swapping here.
757 if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs &&
758 (inode->i_links_count || (ino == EXT2_BAD_INO) ||
759 (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) {
760 if ((ext2fs_extent_header_verify(inode->i_block,
761 sizeof(inode->i_block)) == 0) &&
762 fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) {
763 sb->s_feature_incompat |= EXT3_FEATURE_INCOMPAT_EXTENTS;
764 ext2fs_mark_super_dirty(fs);
766 } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) {
768 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
769 if (ino == EXT2_BAD_INO)
770 ext2fs_mark_inode_bitmap2(ctx->inode_used_map,
777 * For big-endian machines:
778 * If the inode didn't have the extents flag set when it
779 * was read, then the i_blocks array was swapped. To test
780 * as an extents header, we must swap it back first.
781 * IF we then set the extents flag, the entire i_block
782 * array must be un/re-swapped to make it proper extents data.
784 if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) &&
785 (inode->i_links_count || (ino == EXT2_BAD_INO) ||
786 (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) &&
787 (LINUX_S_ISREG(inode->i_mode) ||
788 LINUX_S_ISDIR(inode->i_mode))) {
790 #ifdef WORDS_BIGENDIAN
791 __u32 tmp_block[EXT2_N_BLOCKS];
793 for (i = 0; i < EXT2_N_BLOCKS; i++)
794 tmp_block[i] = ext2fs_swab32(inode->i_block[i]);
797 ehp = inode->i_block;
799 if ((ext2fs_extent_header_verify(ehp,
800 sizeof(inode->i_block)) == 0) &&
801 (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) {
802 inode->i_flags |= EXT4_EXTENTS_FL;
803 #ifdef WORDS_BIGENDIAN
804 memcpy(inode->i_block, tmp_block,
805 sizeof(inode->i_block));
807 e2fsck_write_inode(ctx, ino, inode, "pass1");
811 if (ino == EXT2_BAD_INO) {
812 struct process_block_struct pb;
814 pctx.errcode = ext2fs_copy_bitmap(ctx->block_found_map,
818 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
819 ctx->flags |= E2F_FLAG_ABORT;
822 pb.ino = EXT2_BAD_INO;
823 pb.num_blocks = pb.last_block = 0;
824 pb.last_db_block = -1;
825 pb.num_illegal_blocks = 0;
826 pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
827 pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
831 pctx.errcode = ext2fs_block_iterate3(fs, ino, 0,
832 block_buf, process_bad_block, &pb);
833 ext2fs_free_block_bitmap(pb.fs_meta_blocks);
835 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
836 ctx->flags |= E2F_FLAG_ABORT;
840 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
841 ctx->flags |= E2F_FLAG_ABORT;
844 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
845 clear_problem_context(&pctx);
847 } else if (ino == EXT2_ROOT_INO) {
849 * Make sure the root inode is a directory; if
850 * not, offer to clear it. It will be
851 * regnerated in pass #3.
853 if (!LINUX_S_ISDIR(inode->i_mode)) {
854 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx))
858 * If dtime is set, offer to clear it. mke2fs
859 * version 0.2b created filesystems with the
860 * dtime field set for the root and lost+found
861 * directories. We won't worry about
862 * /lost+found, since that can be regenerated
863 * easily. But we will fix the root directory
866 if (inode->i_dtime && inode->i_links_count) {
867 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
869 e2fsck_write_inode(ctx, ino, inode,
873 } else if (ino == EXT2_JOURNAL_INO) {
874 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
875 if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
876 if (!LINUX_S_ISREG(inode->i_mode) &&
877 fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
879 inode->i_mode = LINUX_S_IFREG;
880 e2fsck_write_inode(ctx, ino, inode,
883 check_blocks(ctx, &pctx, block_buf);
886 if ((inode->i_links_count ||
887 inode->i_blocks || inode->i_block[0]) &&
888 fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
890 memset(inode, 0, inode_size);
891 ext2fs_icount_store(ctx->inode_link_info,
893 e2fsck_write_inode_full(ctx, ino, inode,
894 inode_size, "pass1");
896 } else if (ino < EXT2_FIRST_INODE(fs->super)) {
899 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
900 if (ino == EXT2_BOOT_LOADER_INO) {
901 if (LINUX_S_ISDIR(inode->i_mode))
902 problem = PR_1_RESERVED_BAD_MODE;
903 } else if (ino == EXT2_RESIZE_INO) {
905 !LINUX_S_ISREG(inode->i_mode))
906 problem = PR_1_RESERVED_BAD_MODE;
908 if (inode->i_mode != 0)
909 problem = PR_1_RESERVED_BAD_MODE;
912 if (fix_problem(ctx, problem, &pctx)) {
914 e2fsck_write_inode(ctx, ino, inode,
918 check_blocks(ctx, &pctx, block_buf);
922 * Check for inodes who might have been part of the
923 * orphaned list linked list. They should have gotten
924 * dealt with by now, unless the list had somehow been
927 * FIXME: In the future, inodes which are still in use
928 * (and which are therefore) pending truncation should
929 * be handled specially. Right now we just clear the
930 * dtime field, and the normal e2fsck handling of
931 * inodes where i_size and the inode blocks are
932 * inconsistent is to fix i_size, instead of releasing
933 * the extra blocks. This won't catch the inodes that
934 * was at the end of the orphan list, but it's better
935 * than nothing. The right answer is that there
936 * shouldn't be any bugs in the orphan list handling. :-)
938 if (inode->i_dtime && !busted_fs_time &&
939 inode->i_dtime < ctx->fs->super->s_inodes_count) {
940 if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
941 inode->i_dtime = inode->i_links_count ?
943 e2fsck_write_inode(ctx, ino, inode,
949 * This code assumes that deleted inodes have
950 * i_links_count set to 0.
952 if (!inode->i_links_count) {
953 if (!inode->i_dtime && inode->i_mode) {
955 PR_1_ZERO_DTIME, &pctx)) {
956 inode->i_dtime = ctx->now;
957 e2fsck_write_inode(ctx, ino, inode,
964 * n.b. 0.3c ext2fs code didn't clear i_links_count for
965 * deleted files. Oops.
967 * Since all new ext2 implementations get this right,
968 * we now assume that the case of non-zero
969 * i_links_count and non-zero dtime means that we
970 * should keep the file, not delete it.
973 if (inode->i_dtime) {
974 if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
976 e2fsck_write_inode(ctx, ino, inode, "pass1");
980 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
981 switch (fs->super->s_creator_os) {
983 frag = inode->osd2.hurd2.h_i_frag;
984 fsize = inode->osd2.hurd2.h_i_fsize;
990 if (inode->i_faddr || frag || fsize ||
991 (LINUX_S_ISDIR(inode->i_mode) && inode->i_dir_acl))
992 mark_inode_bad(ctx, ino);
993 if (!(fs->super->s_feature_incompat &
994 EXT4_FEATURE_INCOMPAT_64BIT) &&
995 inode->osd2.linux2.l_i_file_acl_high != 0)
996 mark_inode_bad(ctx, ino);
997 if ((fs->super->s_creator_os == EXT2_OS_LINUX) &&
998 !(fs->super->s_feature_ro_compat &
999 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) &&
1000 (inode->osd2.linux2.l_i_blocks_hi != 0))
1001 mark_inode_bad(ctx, ino);
1002 if (inode->i_flags & EXT2_IMAGIC_FL) {
1004 if (!ctx->inode_imagic_map)
1005 alloc_imagic_map(ctx);
1006 ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map,
1009 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
1010 inode->i_flags &= ~EXT2_IMAGIC_FL;
1011 e2fsck_write_inode(ctx, ino,
1017 check_inode_extra_space(ctx, &pctx);
1018 check_is_really_dir(ctx, &pctx, block_buf);
1021 * ext2fs_inode_has_valid_blocks does not actually look
1022 * at i_block[] values, so not endian-sensitive here.
1024 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) &&
1025 LINUX_S_ISLNK(inode->i_mode) &&
1026 !ext2fs_inode_has_valid_blocks(inode) &&
1027 fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) {
1028 inode->i_flags &= ~EXT4_EXTENTS_FL;
1029 e2fsck_write_inode(ctx, ino, inode, "pass1");
1032 if (LINUX_S_ISDIR(inode->i_mode)) {
1033 ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
1034 e2fsck_add_dir_info(ctx, ino, 0);
1035 ctx->fs_directory_count++;
1036 } else if (LINUX_S_ISREG (inode->i_mode)) {
1037 ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino);
1038 ctx->fs_regular_count++;
1039 } else if (LINUX_S_ISCHR (inode->i_mode) &&
1040 e2fsck_pass1_check_device_inode(fs, inode)) {
1041 check_immutable(ctx, &pctx);
1042 check_size(ctx, &pctx);
1043 ctx->fs_chardev_count++;
1044 } else if (LINUX_S_ISBLK (inode->i_mode) &&
1045 e2fsck_pass1_check_device_inode(fs, inode)) {
1046 check_immutable(ctx, &pctx);
1047 check_size(ctx, &pctx);
1048 ctx->fs_blockdev_count++;
1049 } else if (LINUX_S_ISLNK (inode->i_mode) &&
1050 e2fsck_pass1_check_symlink(fs, ino, inode,
1052 check_immutable(ctx, &pctx);
1053 ctx->fs_symlinks_count++;
1054 if (ext2fs_inode_data_blocks(fs, inode) == 0) {
1055 ctx->fs_fast_symlinks_count++;
1056 check_blocks(ctx, &pctx, block_buf);
1060 else if (LINUX_S_ISFIFO (inode->i_mode) &&
1061 e2fsck_pass1_check_device_inode(fs, inode)) {
1062 check_immutable(ctx, &pctx);
1063 check_size(ctx, &pctx);
1064 ctx->fs_fifo_count++;
1065 } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
1066 e2fsck_pass1_check_device_inode(fs, inode)) {
1067 check_immutable(ctx, &pctx);
1068 check_size(ctx, &pctx);
1069 ctx->fs_sockets_count++;
1071 mark_inode_bad(ctx, ino);
1072 if (!(inode->i_flags & EXT4_EXTENTS_FL)) {
1073 if (inode->i_block[EXT2_IND_BLOCK])
1074 ctx->fs_ind_count++;
1075 if (inode->i_block[EXT2_DIND_BLOCK])
1076 ctx->fs_dind_count++;
1077 if (inode->i_block[EXT2_TIND_BLOCK])
1078 ctx->fs_tind_count++;
1080 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1081 (inode->i_block[EXT2_IND_BLOCK] ||
1082 inode->i_block[EXT2_DIND_BLOCK] ||
1083 inode->i_block[EXT2_TIND_BLOCK] ||
1084 ext2fs_file_acl_block(inode))) {
1085 inodes_to_process[process_inode_count].ino = ino;
1086 inodes_to_process[process_inode_count].inode = *inode;
1087 process_inode_count++;
1089 check_blocks(ctx, &pctx, block_buf);
1091 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1094 if (process_inode_count >= ctx->process_inode_size) {
1095 process_inodes(ctx, block_buf);
1097 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1101 process_inodes(ctx, block_buf);
1102 ext2fs_close_inode_scan(scan);
1105 * If any extended attribute blocks' reference counts need to
1106 * be adjusted, either up (ctx->refcount_extra), or down
1107 * (ctx->refcount), then fix them.
1109 if (ctx->refcount) {
1110 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
1111 ea_refcount_free(ctx->refcount);
1114 if (ctx->refcount_extra) {
1115 adjust_extattr_refcount(ctx, ctx->refcount_extra,
1117 ea_refcount_free(ctx->refcount_extra);
1118 ctx->refcount_extra = 0;
1121 if (ctx->invalid_bitmaps)
1122 handle_fs_bad_blocks(ctx);
1124 /* We don't need the block_ea_map any more */
1125 if (ctx->block_ea_map) {
1126 ext2fs_free_block_bitmap(ctx->block_ea_map);
1127 ctx->block_ea_map = 0;
1130 if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
1131 ext2fs_block_bitmap save_bmap;
1133 save_bmap = fs->block_map;
1134 fs->block_map = ctx->block_found_map;
1135 clear_problem_context(&pctx);
1136 pctx.errcode = ext2fs_create_resize_inode(fs);
1138 if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE,
1140 ctx->flags |= E2F_FLAG_ABORT;
1145 if (!pctx.errcode) {
1146 e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
1148 inode->i_mtime = ctx->now;
1149 e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
1152 fs->block_map = save_bmap;
1153 ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
1156 if (ctx->flags & E2F_FLAG_RESTART) {
1158 * Only the master copy of the superblock and block
1159 * group descriptors are going to be written during a
1160 * restart, so set the superblock to be used to be the
1161 * master superblock.
1163 ctx->use_superblock = 0;
1168 if (ctx->block_dup_map) {
1169 if (ctx->options & E2F_OPT_PREEN) {
1170 clear_problem_context(&pctx);
1171 fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
1173 e2fsck_pass1_dupblocks(ctx, block_buf);
1175 ext2fs_free_mem(&inodes_to_process);
1177 e2fsck_use_inode_shortcuts(ctx, 0);
1179 ext2fs_free_mem(&block_buf);
1180 ext2fs_free_mem(&inode);
1182 print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io);
1186 * When the inode_scan routines call this callback at the end of the
1187 * glock group, call process_inodes.
1189 static errcode_t scan_callback(ext2_filsys fs,
1190 ext2_inode_scan scan EXT2FS_ATTR((unused)),
1191 dgrp_t group, void * priv_data)
1193 struct scan_callback_struct *scan_struct;
1196 scan_struct = (struct scan_callback_struct *) priv_data;
1197 ctx = scan_struct->ctx;
1199 process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf);
1202 if ((ctx->progress)(ctx, 1, group+1,
1203 ctx->fs->group_desc_count))
1204 return EXT2_ET_CANCEL_REQUESTED;
1210 * Process the inodes in the "inodes to process" list.
1212 static void process_inodes(e2fsck_t ctx, char *block_buf)
1215 struct ext2_inode *old_stashed_inode;
1216 ext2_ino_t old_stashed_ino;
1217 const char *old_operation;
1219 struct problem_context pctx;
1222 printf("begin process_inodes: ");
1224 if (process_inode_count == 0)
1226 old_operation = ehandler_operation(0);
1227 old_stashed_inode = ctx->stashed_inode;
1228 old_stashed_ino = ctx->stashed_ino;
1229 qsort(inodes_to_process, process_inode_count,
1230 sizeof(struct process_inode_block), process_inode_cmp);
1231 clear_problem_context(&pctx);
1232 for (i=0; i < process_inode_count; i++) {
1233 pctx.inode = ctx->stashed_inode = &inodes_to_process[i].inode;
1234 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
1237 printf("%u ", pctx.ino);
1239 sprintf(buf, _("reading indirect blocks of inode %u"),
1241 ehandler_operation(buf);
1242 check_blocks(ctx, &pctx, block_buf);
1243 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1246 ctx->stashed_inode = old_stashed_inode;
1247 ctx->stashed_ino = old_stashed_ino;
1248 process_inode_count = 0;
1250 printf("end process inodes\n");
1252 ehandler_operation(old_operation);
1255 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
1257 const struct process_inode_block *ib_a =
1258 (const struct process_inode_block *) a;
1259 const struct process_inode_block *ib_b =
1260 (const struct process_inode_block *) b;
1263 ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
1264 ib_b->inode.i_block[EXT2_IND_BLOCK]);
1266 ret = ext2fs_file_acl_block(&(ib_a->inode)) -
1267 ext2fs_file_acl_block(&ib_b->inode);
1269 ret = ib_a->ino - ib_b->ino;
1274 * Mark an inode as being bad in some what
1276 static void mark_inode_bad(e2fsck_t ctx, ino_t ino)
1278 struct problem_context pctx;
1280 if (!ctx->inode_bad_map) {
1281 clear_problem_context(&pctx);
1283 pctx.errcode = ext2fs_allocate_inode_bitmap(ctx->fs,
1284 _("bad inode map"), &ctx->inode_bad_map);
1287 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1288 /* Should never get here */
1289 ctx->flags |= E2F_FLAG_ABORT;
1293 ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino);
1298 * This procedure will allocate the inode "bb" (badblock) map table
1300 static void alloc_bb_map(e2fsck_t ctx)
1302 struct problem_context pctx;
1304 clear_problem_context(&pctx);
1305 pctx.errcode = ext2fs_allocate_inode_bitmap(ctx->fs,
1306 _("inode in bad block map"),
1307 &ctx->inode_bb_map);
1310 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1311 /* Should never get here */
1312 ctx->flags |= E2F_FLAG_ABORT;
1318 * This procedure will allocate the inode imagic table
1320 static void alloc_imagic_map(e2fsck_t ctx)
1322 struct problem_context pctx;
1324 clear_problem_context(&pctx);
1325 pctx.errcode = ext2fs_allocate_inode_bitmap(ctx->fs,
1326 _("imagic inode map"),
1327 &ctx->inode_imagic_map);
1330 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1331 /* Should never get here */
1332 ctx->flags |= E2F_FLAG_ABORT;
1338 * Marks a block as in use, setting the dup_map if it's been set
1339 * already. Called by process_block and process_bad_block.
1341 * WARNING: Assumes checks have already been done to make sure block
1342 * is valid. This is true in both process_block and process_bad_block.
1344 static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block)
1346 struct problem_context pctx;
1348 clear_problem_context(&pctx);
1350 if (ext2fs_fast_test_block_bitmap2(ctx->block_found_map, block)) {
1351 if (!ctx->block_dup_map) {
1352 pctx.errcode = ext2fs_allocate_block_bitmap(ctx->fs,
1353 _("multiply claimed block map"),
1354 &ctx->block_dup_map);
1357 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
1359 /* Should never get here */
1360 ctx->flags |= E2F_FLAG_ABORT;
1364 ext2fs_fast_mark_block_bitmap2(ctx->block_dup_map, block);
1366 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block);
1371 * Adjust the extended attribute block's reference counts at the end
1372 * of pass 1, either by subtracting out references for EA blocks that
1373 * are still referenced in ctx->refcount, or by adding references for
1374 * EA blocks that had extra references as accounted for in
1375 * ctx->refcount_extra.
1377 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
1378 char *block_buf, int adjust_sign)
1380 struct ext2_ext_attr_header *header;
1381 struct problem_context pctx;
1382 ext2_filsys fs = ctx->fs;
1387 clear_problem_context(&pctx);
1389 ea_refcount_intr_begin(refcount);
1391 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
1394 pctx.errcode = ext2fs_read_ext_attr2(fs, blk, block_buf);
1396 fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
1399 header = (struct ext2_ext_attr_header *) block_buf;
1400 pctx.blkcount = header->h_refcount;
1401 should_be = header->h_refcount + adjust_sign * count;
1402 pctx.num = should_be;
1403 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
1404 header->h_refcount = should_be;
1405 pctx.errcode = ext2fs_write_ext_attr2(fs, blk,
1408 fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT,
1417 * Handle processing the extended attribute blocks
1419 static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
1422 ext2_filsys fs = ctx->fs;
1423 ext2_ino_t ino = pctx->ino;
1424 struct ext2_inode *inode = pctx->inode;
1427 struct ext2_ext_attr_header *header;
1428 struct ext2_ext_attr_entry *entry;
1430 region_t region = 0;
1432 blk = ext2fs_file_acl_block(inode);
1437 * If the Extended attribute flag isn't set, then a non-zero
1438 * file acl means that the inode is corrupted.
1440 * Or if the extended attribute block is an invalid block,
1441 * then the inode is also corrupted.
1443 if (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR) ||
1444 (blk < fs->super->s_first_data_block) ||
1445 (blk >= ext2fs_blocks_count(fs->super))) {
1446 mark_inode_bad(ctx, ino);
1450 /* If ea bitmap hasn't been allocated, create it */
1451 if (!ctx->block_ea_map) {
1452 pctx->errcode = ext2fs_allocate_block_bitmap(fs,
1453 _("ext attr block map"),
1454 &ctx->block_ea_map);
1455 if (pctx->errcode) {
1457 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
1458 ctx->flags |= E2F_FLAG_ABORT;
1463 /* Create the EA refcount structure if necessary */
1464 if (!ctx->refcount) {
1465 pctx->errcode = ea_refcount_create(0, &ctx->refcount);
1466 if (pctx->errcode) {
1468 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
1469 ctx->flags |= E2F_FLAG_ABORT;
1475 /* Debugging text */
1476 printf("Inode %u has EA block %u\n", ino, blk);
1479 /* Have we seen this EA block before? */
1480 if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) {
1481 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
1483 /* Ooops, this EA was referenced more than it stated */
1484 if (!ctx->refcount_extra) {
1485 pctx->errcode = ea_refcount_create(0,
1486 &ctx->refcount_extra);
1487 if (pctx->errcode) {
1489 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
1490 ctx->flags |= E2F_FLAG_ABORT;
1494 ea_refcount_increment(ctx->refcount_extra, blk, 0);
1499 * OK, we haven't seen this EA block yet. So we need to
1503 pctx->errcode = ext2fs_read_ext_attr2(fs, blk, block_buf);
1504 if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
1506 header = (struct ext2_ext_attr_header *) block_buf;
1507 pctx->blk = ext2fs_file_acl_block(inode);
1508 if (((ctx->ext_attr_ver == 1) &&
1509 (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
1510 ((ctx->ext_attr_ver == 2) &&
1511 (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
1512 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
1516 if (header->h_blocks != 1) {
1517 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
1521 region = region_create(0, fs->blocksize);
1523 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
1524 ctx->flags |= E2F_FLAG_ABORT;
1527 if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
1528 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
1532 entry = (struct ext2_ext_attr_entry *)(header+1);
1533 end = block_buf + fs->blocksize;
1534 while ((char *)entry < end && *(__u32 *)entry) {
1537 if (region_allocate(region, (char *)entry - (char *)header,
1538 EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
1539 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
1543 if ((ctx->ext_attr_ver == 1 &&
1544 (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
1545 (ctx->ext_attr_ver == 2 &&
1546 entry->e_name_index == 0)) {
1547 if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
1551 if (entry->e_value_block != 0) {
1552 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
1555 if (entry->e_value_offs + entry->e_value_size > fs->blocksize) {
1556 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
1560 if (entry->e_value_size &&
1561 region_allocate(region, entry->e_value_offs,
1562 EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
1563 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
1567 hash = ext2fs_ext_attr_hash_entry(entry, block_buf +
1568 entry->e_value_offs);
1570 if (entry->e_hash != hash) {
1571 pctx->num = entry->e_hash;
1572 if (fix_problem(ctx, PR_1_ATTR_HASH, pctx))
1574 entry->e_hash = hash;
1577 entry = EXT2_EXT_ATTR_NEXT(entry);
1579 if (region_allocate(region, (char *)entry - (char *)header, 4)) {
1580 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
1583 region_free(region);
1585 count = header->h_refcount - 1;
1587 ea_refcount_store(ctx->refcount, blk, count);
1588 mark_block_used(ctx, blk);
1589 ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk);
1594 region_free(region);
1595 ext2fs_file_acl_block_set(inode, 0);
1596 e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
1600 /* Returns 1 if bad htree, 0 if OK */
1601 static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
1602 ext2_ino_t ino, struct ext2_inode *inode,
1605 struct ext2_dx_root_info *root;
1606 ext2_filsys fs = ctx->fs;
1610 if ((!LINUX_S_ISDIR(inode->i_mode) &&
1611 fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
1612 (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) &&
1613 fix_problem(ctx, PR_1_HTREE_SET, pctx)))
1616 pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk);
1618 if ((pctx->errcode) ||
1620 (blk < fs->super->s_first_data_block) ||
1621 (blk >= ext2fs_blocks_count(fs->super))) {
1622 if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
1628 retval = io_channel_read_blk64(fs->io, blk, 1, block_buf);
1629 if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
1632 /* XXX should check that beginning matches a directory */
1633 root = (struct ext2_dx_root_info *) (block_buf + 24);
1635 if ((root->reserved_zero || root->info_length < 8) &&
1636 fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
1639 pctx->num = root->hash_version;
1640 if ((root->hash_version != EXT2_HASH_LEGACY) &&
1641 (root->hash_version != EXT2_HASH_HALF_MD4) &&
1642 (root->hash_version != EXT2_HASH_TEA) &&
1643 fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
1646 if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
1647 fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
1650 pctx->num = root->indirect_levels;
1651 if ((root->indirect_levels > 1) &&
1652 fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
1658 void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
1659 struct ext2_inode *inode, int restart_flag,
1663 inode->i_links_count = 0;
1664 ext2fs_icount_store(ctx->inode_link_info, ino, 0);
1665 inode->i_dtime = ctx->now;
1667 ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
1668 ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
1669 if (ctx->inode_reg_map)
1670 ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
1671 if (ctx->inode_bad_map)
1672 ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
1675 * If the inode was partially accounted for before processing
1676 * was aborted, we need to restart the pass 1 scan.
1678 ctx->flags |= restart_flag;
1680 e2fsck_write_inode(ctx, ino, inode, source);
1683 static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
1684 struct process_block_struct *pb,
1685 blk64_t start_block,
1686 ext2_extent_handle_t ehandle)
1688 struct ext2fs_extent extent;
1690 e2_blkcnt_t blockcnt;
1692 int is_dir, is_leaf;
1694 struct ext2_extent_info info;
1696 pctx->errcode = ext2fs_extent_get_info(ehandle, &info);
1700 pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB,
1702 while (!pctx->errcode && info.num_entries-- > 0) {
1703 is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF;
1704 is_dir = LINUX_S_ISDIR(pctx->inode->i_mode);
1707 if (extent.e_pblk == 0 ||
1708 extent.e_pblk < ctx->fs->super->s_first_data_block ||
1709 extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super))
1710 problem = PR_1_EXTENT_BAD_START_BLK;
1711 else if (extent.e_lblk < start_block)
1712 problem = PR_1_OUT_OF_ORDER_EXTENTS;
1714 (extent.e_pblk + extent.e_len) >
1715 ext2fs_blocks_count(ctx->fs->super))
1716 problem = PR_1_EXTENT_ENDS_BEYOND;
1720 pctx->blk = extent.e_pblk;
1721 pctx->blk2 = extent.e_lblk;
1722 pctx->num = extent.e_len;
1723 if (fix_problem(ctx, problem, pctx)) {
1724 e2fsck_read_bitmaps(ctx);
1726 ext2fs_extent_delete(ehandle, 0);
1727 if (pctx->errcode) {
1728 pctx->str = "ext2fs_extent_delete";
1731 pctx->errcode = ext2fs_extent_get(ehandle,
1732 EXT2_EXTENT_CURRENT,
1734 if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) {
1744 blk = extent.e_pblk;
1745 pctx->errcode = ext2fs_extent_get(ehandle,
1746 EXT2_EXTENT_DOWN, &extent);
1747 if (pctx->errcode) {
1748 pctx->str = "EXT2_EXTENT_DOWN";
1749 problem = PR_1_EXTENT_HEADER_INVALID;
1750 if (pctx->errcode == EXT2_ET_EXTENT_HEADER_BAD)
1751 goto report_problem;
1754 scan_extent_node(ctx, pctx, pb, extent.e_lblk, ehandle);
1757 pctx->errcode = ext2fs_extent_get(ehandle,
1758 EXT2_EXTENT_UP, &extent);
1759 if (pctx->errcode) {
1760 pctx->str = "EXT2_EXTENT_UP";
1763 mark_block_used(ctx, blk);
1768 if ((pb->previous_block != 0) &&
1769 (pb->previous_block+1 != extent.e_pblk)) {
1770 if (ctx->options & E2F_OPT_FRAGCHECK) {
1775 else if (pb->is_reg)
1778 printf(("%6lu(%c): expecting %6lu "
1780 "phys %6lu log %lu len %lu\n"),
1781 (unsigned long) pctx->ino, type,
1782 (unsigned long) pb->previous_block+1,
1783 (unsigned long) extent.e_pblk,
1784 (unsigned long) extent.e_lblk,
1785 (unsigned long) extent.e_len);
1789 while (is_dir && ++pb->last_db_block < extent.e_lblk) {
1790 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist,
1793 if (pctx->errcode) {
1795 pctx->num = pb->last_db_block;
1796 goto failed_add_dir_block;
1799 for (blk = extent.e_pblk, blockcnt = extent.e_lblk, i = 0;
1801 blk++, blockcnt++, i++) {
1802 if (!(ctx->fs->cluster_ratio_bits &&
1803 pb->previous_block &&
1804 (EXT2FS_B2C(ctx->fs, blk) ==
1805 EXT2FS_B2C(ctx->fs, pb->previous_block)) &&
1806 (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
1807 (blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
1808 mark_block_used(ctx, blk);
1812 pb->previous_block = blk;
1815 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pctx->ino, blk, blockcnt);
1816 if (pctx->errcode) {
1818 pctx->num = blockcnt;
1819 failed_add_dir_block:
1820 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
1821 /* Should never get here */
1822 ctx->flags |= E2F_FLAG_ABORT;
1827 if (is_dir && extent.e_len > 0)
1828 pb->last_db_block = blockcnt - 1;
1829 pb->previous_block = extent.e_pblk + extent.e_len - 1;
1830 start_block = pb->last_block = extent.e_lblk + extent.e_len - 1;
1832 pctx->errcode = ext2fs_extent_get(ehandle,
1833 EXT2_EXTENT_NEXT_SIB,
1836 if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT)
1840 static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
1841 struct process_block_struct *pb)
1843 struct ext2_extent_info info;
1844 struct ext2_inode *inode = pctx->inode;
1845 ext2_extent_handle_t ehandle;
1846 ext2_filsys fs = ctx->fs;
1847 ext2_ino_t ino = pctx->ino;
1850 pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle);
1851 if (pctx->errcode) {
1852 if (fix_problem(ctx, PR_1_READ_EXTENT, pctx))
1853 e2fsck_clear_inode(ctx, ino, inode, 0,
1854 "check_blocks_extents");
1859 retval = ext2fs_extent_get_info(ehandle, &info);
1861 if (info.max_depth >= MAX_EXTENT_DEPTH_COUNT)
1862 info.max_depth = MAX_EXTENT_DEPTH_COUNT-1;
1863 ctx->extent_depth_count[info.max_depth]++;
1866 scan_extent_node(ctx, pctx, pb, 0, ehandle);
1867 if (pctx->errcode &&
1868 fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) {
1870 inode->i_blocks = 0;
1871 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
1872 "check_blocks_extents");
1875 ext2fs_extent_free(ehandle);
1879 * This subroutine is called on each inode to account for all of the
1880 * blocks used by that inode.
1882 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
1885 ext2_filsys fs = ctx->fs;
1886 struct process_block_struct pb;
1887 ext2_ino_t ino = pctx->ino;
1888 struct ext2_inode *inode = pctx->inode;
1890 int dirty_inode = 0;
1897 pb.last_db_block = -1;
1898 pb.num_illegal_blocks = 0;
1899 pb.suppress = 0; pb.clear = 0;
1902 pb.previous_block = 0;
1903 pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
1904 pb.is_reg = LINUX_S_ISREG(inode->i_mode);
1905 pb.max_blocks = 1 << (31 - fs->super->s_log_block_size);
1912 extent_fs = (ctx->fs->super->s_feature_incompat &
1913 EXT3_FEATURE_INCOMPAT_EXTENTS);
1915 if (inode->i_flags & EXT2_COMPRBLK_FL) {
1916 if (fs->super->s_feature_incompat &
1917 EXT2_FEATURE_INCOMPAT_COMPRESSION)
1920 if (fix_problem(ctx, PR_1_COMPR_SET, pctx)) {
1921 inode->i_flags &= ~EXT2_COMPRBLK_FL;
1927 if (ext2fs_file_acl_block(inode) &&
1928 check_ext_attr(ctx, pctx, block_buf)) {
1929 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1934 if (ext2fs_inode_has_valid_blocks(inode)) {
1935 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
1936 check_blocks_extents(ctx, pctx, &pb);
1938 pctx->errcode = ext2fs_block_iterate3(fs, ino,
1939 pb.is_dir ? BLOCK_FLAG_HOLE : 0,
1940 block_buf, process_block, &pb);
1942 end_problem_latch(ctx, PR_LATCH_BLOCK);
1943 end_problem_latch(ctx, PR_LATCH_TOOBIG);
1944 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1947 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
1949 if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) {
1950 if (LINUX_S_ISDIR(inode->i_mode))
1951 ctx->fs_fragmented_dir++;
1953 ctx->fs_fragmented++;
1957 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
1962 if (inode->i_flags & EXT2_INDEX_FL) {
1963 if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
1964 inode->i_flags &= ~EXT2_INDEX_FL;
1968 e2fsck_add_dx_dir(ctx, ino, pb.last_block+1);
1973 if (!pb.num_blocks && pb.is_dir) {
1974 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
1975 e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
1976 ctx->fs_directory_count--;
1981 if (!(fs->super->s_feature_ro_compat &
1982 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1983 !(inode->i_flags & EXT4_HUGE_FILE_FL))
1984 pb.num_blocks *= (fs->blocksize / 512);
1985 pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs);
1987 printf("inode %u, i_size = %u, last_block = %lld, i_blocks=%llu, num_blocks = %llu\n",
1988 ino, inode->i_size, pb.last_block, ext2fs_inode_i_blocks(fs, inode),
1992 int nblock = inode->i_size >> EXT2_BLOCK_SIZE_BITS(fs->super);
1993 if (inode->i_size & (fs->blocksize - 1))
1995 else if (nblock > (pb.last_block + 1))
1997 else if (nblock < (pb.last_block + 1)) {
1998 if (((pb.last_block + 1) - nblock) >
1999 fs->super->s_prealloc_dir_blocks)
2003 e2_blkcnt_t blkpg = ctx->blocks_per_page;
2005 size = EXT2_I_SIZE(inode);
2006 if ((pb.last_block >= 0) &&
2007 /* allow allocated blocks to end of PAGE_SIZE */
2008 (size < (__u64)pb.last_block * fs->blocksize) &&
2009 (pb.last_block / blkpg * blkpg != pb.last_block ||
2010 size < (__u64)(pb.last_block & ~(blkpg-1)) *fs->blocksize) &&
2011 !(inode->i_flags & EXT4_EOFBLOCKS_FL))
2013 else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
2014 size > ext2_max_sizes[fs->super->s_log_block_size])
2015 /* too big for a direct/indirect-mapped file */
2017 else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
2019 ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1))
2020 /* too big for an extent-based file - 32bit ee_block */
2024 * Check to see if the EOFBLOCKS flag is set where it
2025 * doesn't need to be.
2027 if ((inode->i_flags & EXT4_EOFBLOCKS_FL) &&
2028 (size >= (((__u64)pb.last_block + 1) * fs->blocksize))) {
2029 pctx->blkcount = pb.last_block;
2030 if (fix_problem(ctx, PR_1_EOFBLOCKS_FL_SET, pctx)) {
2031 inode->i_flags &= ~EXT4_EOFBLOCKS_FL;
2036 /* i_size for symlinks is checked elsewhere */
2037 if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
2038 pctx->num = (pb.last_block+1) * fs->blocksize;
2039 pctx->group = bad_size;
2040 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
2041 inode->i_size = pctx->num;
2042 if (!LINUX_S_ISDIR(inode->i_mode))
2043 inode->i_size_high = pctx->num >> 32;
2048 if (LINUX_S_ISREG(inode->i_mode) && EXT2_I_SIZE(inode) >= 0x80000000UL)
2050 if ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) ||
2051 ((fs->super->s_feature_ro_compat &
2052 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) &&
2053 (inode->i_flags & EXT4_HUGE_FILE_FL) &&
2054 (inode->osd2.linux2.l_i_blocks_hi != 0))) {
2055 pctx->num = pb.num_blocks;
2056 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
2057 inode->i_blocks = pb.num_blocks;
2058 inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32;
2064 if (ctx->dirs_to_hash && pb.is_dir &&
2065 !(inode->i_flags & EXT2_INDEX_FL) &&
2066 ((inode->i_size / fs->blocksize) >= 3))
2067 ext2fs_u32_list_add(ctx->dirs_to_hash, ino);
2071 e2fsck_write_inode(ctx, ino, inode, "check_blocks");
2076 * Helper function called by process block when an illegal block is
2077 * found. It returns a description about why the block is illegal
2079 static char *describe_illegal_block(ext2_filsys fs, blk64_t block)
2083 static char problem[80];
2085 super = fs->super->s_first_data_block;
2086 strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
2087 if (block < super) {
2088 sprintf(problem, "< FIRSTBLOCK (%u)", super);
2090 } else if (block >= ext2fs_blocks_count(fs->super)) {
2091 sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super));
2094 for (i = 0; i < fs->group_desc_count; i++) {
2095 if (block == super) {
2096 sprintf(problem, "is the superblock in group %d", i);
2099 if (block > super &&
2100 block <= (super + fs->desc_blocks)) {
2101 sprintf(problem, "is in the group descriptors "
2105 if (block == ext2fs_block_bitmap_loc(fs, i)) {
2106 sprintf(problem, "is the block bitmap of group %d", i);
2109 if (block == ext2fs_inode_bitmap_loc(fs, i)) {
2110 sprintf(problem, "is the inode bitmap of group %d", i);
2113 if (block >= ext2fs_inode_table_loc(fs, i) &&
2114 (block < ext2fs_inode_table_loc(fs, i)
2115 + fs->inode_blocks_per_group)) {
2116 sprintf(problem, "is in the inode table of group %d",
2120 super += fs->super->s_blocks_per_group;
2127 * This is a helper function for check_blocks().
2129 static int process_block(ext2_filsys fs,
2131 e2_blkcnt_t blockcnt,
2132 blk64_t ref_block EXT2FS_ATTR((unused)),
2133 int ref_offset EXT2FS_ATTR((unused)),
2136 struct process_block_struct *p;
2137 struct problem_context *pctx;
2138 blk64_t blk = *block_nr;
2143 p = (struct process_block_struct *) priv_data;
2147 if (p->compressed && (blk == EXT2FS_COMPRESSED_BLKADDR)) {
2148 /* todo: Check that the comprblk_fl is high, that the
2149 blkaddr pattern looks right (all non-holes up to
2150 first EXT2FS_COMPRESSED_BLKADDR, then all
2151 EXT2FS_COMPRESSED_BLKADDR up to end of cluster),
2152 that the feature_incompat bit is high, and that the
2153 inode is a regular file. If we're doing a "full
2154 check" (a concept introduced to e2fsck by e2compr,
2155 meaning that we look at data blocks as well as
2156 metadata) then call some library routine that
2157 checks the compressed data. I'll have to think
2158 about this, because one particularly important
2159 problem to be able to fix is to recalculate the
2160 cluster size if necessary. I think that perhaps
2161 we'd better do most/all e2compr-specific checks
2162 separately, after the non-e2compr checks. If not
2163 doing a full check, it may be useful to test that
2164 the personality is linux; e.g. if it isn't then
2165 perhaps this really is just an illegal block. */
2173 printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
2178 * Simplistic fragmentation check. We merely require that the
2179 * file be contiguous. (Which can never be true for really
2180 * big files that are greater than a block group.)
2182 if (!HOLE_BLKADDR(p->previous_block) && p->ino != EXT2_RESIZE_INO) {
2183 if (p->previous_block+1 != blk) {
2184 if (ctx->options & E2F_OPT_FRAGCHECK) {
2192 printf(_("%6lu(%c): expecting %6lu "
2193 "got phys %6lu (blkcnt %lld)\n"),
2194 (unsigned long) pctx->ino, type,
2195 (unsigned long) p->previous_block+1,
2196 (unsigned long) blk,
2202 p->previous_block = blk;
2204 if (p->is_dir && blockcnt > (1 << (21 - fs->super->s_log_block_size)))
2205 problem = PR_1_TOOBIG_DIR;
2206 if (p->is_reg && p->num_blocks+1 >= p->max_blocks)
2207 problem = PR_1_TOOBIG_REG;
2208 if (!p->is_dir && !p->is_reg && blockcnt > 0)
2209 problem = PR_1_TOOBIG_SYMLINK;
2211 if (blk < fs->super->s_first_data_block ||
2212 blk >= ext2fs_blocks_count(fs->super))
2213 problem = PR_1_ILLEGAL_BLOCK_NUM;
2216 p->num_illegal_blocks++;
2217 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
2218 if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
2222 if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
2224 set_latch_flags(PR_LATCH_BLOCK,
2229 pctx->blkcount = blockcnt;
2230 if (fix_problem(ctx, problem, pctx)) {
2231 blk = *block_nr = 0;
2232 ret_code = BLOCK_CHANGED;
2238 if (p->ino == EXT2_RESIZE_INO) {
2240 * The resize inode has already be sanity checked
2241 * during pass #0 (the superblock checks). All we
2242 * have to do is mark the double indirect block as
2243 * being in use; all of the other blocks are handled
2244 * by mark_table_blocks()).
2246 if (blockcnt == BLOCK_COUNT_DIND)
2247 mark_block_used(ctx, blk);
2249 mark_block_used(ctx, blk);
2252 p->last_block = blockcnt;
2254 if (p->is_dir && (blockcnt >= 0)) {
2255 while (++p->last_db_block < blockcnt) {
2256 pctx->errcode = ext2fs_add_dir_block2(fs->dblist,
2259 if (pctx->errcode) {
2261 pctx->num = p->last_db_block;
2262 goto failed_add_dir_block;
2265 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino,
2267 if (pctx->errcode) {
2269 pctx->num = blockcnt;
2270 failed_add_dir_block:
2271 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
2272 /* Should never get here */
2273 ctx->flags |= E2F_FLAG_ABORT;
2280 static int process_bad_block(ext2_filsys fs,
2282 e2_blkcnt_t blockcnt,
2283 blk64_t ref_block EXT2FS_ATTR((unused)),
2284 int ref_offset EXT2FS_ATTR((unused)),
2287 struct process_block_struct *p;
2288 blk64_t blk = *block_nr;
2289 blk64_t first_block;
2291 struct problem_context *pctx;
2295 * Note: This function processes blocks for the bad blocks
2296 * inode, which is never compressed. So we don't use HOLE_BLKADDR().
2302 p = (struct process_block_struct *) priv_data;
2306 pctx->ino = EXT2_BAD_INO;
2308 pctx->blkcount = blockcnt;
2310 if ((blk < fs->super->s_first_data_block) ||
2311 (blk >= ext2fs_blocks_count(fs->super))) {
2312 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
2314 return BLOCK_CHANGED;
2320 if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) {
2322 if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
2324 return BLOCK_CHANGED;
2326 } else if (ext2fs_test_block_bitmap2(ctx->block_found_map,
2329 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
2332 return BLOCK_CHANGED;
2334 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2337 mark_block_used(ctx, blk);
2341 printf ("DEBUG: Marking %u as bad.\n", blk);
2343 ctx->fs_badblocks_count++;
2345 * If the block is not used, then mark it as used and return.
2346 * If it is already marked as found, this must mean that
2347 * there's an overlap between the filesystem table blocks
2348 * (bitmaps and inode table) and the bad block list.
2350 if (!ext2fs_test_block_bitmap2(ctx->block_found_map, blk)) {
2351 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
2355 * Try to find the where the filesystem block was used...
2357 first_block = fs->super->s_first_data_block;
2359 for (i = 0; i < fs->group_desc_count; i++ ) {
2362 if (!ext2fs_bg_has_super(fs, i))
2364 if (blk == first_block) {
2366 if (fix_problem(ctx,
2367 PR_1_BAD_PRIMARY_SUPERBLOCK,
2370 return BLOCK_CHANGED;
2374 fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
2377 if ((blk > first_block) &&
2378 (blk <= first_block + fs->desc_blocks)) {
2380 pctx->blk = *block_nr;
2381 if (fix_problem(ctx,
2382 PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
2384 return BLOCK_CHANGED;
2388 fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
2392 if (blk == ext2fs_block_bitmap_loc(fs, i)) {
2393 if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
2394 ctx->invalid_block_bitmap_flag[i]++;
2395 ctx->invalid_bitmaps++;
2399 if (blk == ext2fs_inode_bitmap_loc(fs, i)) {
2400 if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
2401 ctx->invalid_inode_bitmap_flag[i]++;
2402 ctx->invalid_bitmaps++;
2406 if ((blk >= ext2fs_inode_table_loc(fs, i)) &&
2407 (blk < (ext2fs_inode_table_loc(fs, i) +
2408 fs->inode_blocks_per_group))) {
2410 * If there are bad blocks in the inode table,
2411 * the inode scan code will try to do
2412 * something reasonable automatically.
2416 first_block += fs->super->s_blocks_per_group;
2419 * If we've gotten to this point, then the only
2420 * possibility is that the bad block inode meta data
2421 * is using a bad block.
2423 if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
2424 (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
2425 (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
2427 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
2429 return BLOCK_CHANGED;
2431 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2438 /* Warn user that the block wasn't claimed */
2439 fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
2444 static void new_table_block(e2fsck_t ctx, blk_t first_block, int group,
2445 const char *name, int num, blk64_t *new_block)
2447 ext2_filsys fs = ctx->fs;
2449 blk64_t old_block = *new_block;
2451 int i, is_flexbg, flexbg, flexbg_size;
2453 struct problem_context pctx;
2455 clear_problem_context(&pctx);
2458 pctx.blk = old_block;
2462 * For flex_bg filesystems, first try to allocate the metadata
2463 * within the flex_bg, and if that fails then try finding the
2464 * space anywhere in the filesystem.
2466 is_flexbg = EXT2_HAS_INCOMPAT_FEATURE(fs->super,
2467 EXT4_FEATURE_INCOMPAT_FLEX_BG);
2469 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
2470 flexbg = group / flexbg_size;
2471 first_block = ext2fs_group_first_block2(fs,
2472 flexbg_size * flexbg);
2473 last_grp = group | (flexbg_size - 1);
2474 if (last_grp > fs->group_desc_count)
2475 last_grp = fs->group_desc_count;
2476 last_block = ext2fs_group_last_block2(fs, last_grp);
2478 last_block = ext2fs_group_last_block2(fs, group);
2479 pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block,
2480 num, ctx->block_found_map,
2482 if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL))
2483 pctx.errcode = ext2fs_get_free_blocks2(fs,
2484 fs->super->s_first_data_block,
2485 ext2fs_blocks_count(fs->super),
2486 num, ctx->block_found_map, new_block);
2489 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
2490 ext2fs_unmark_valid(fs);
2491 ctx->flags |= E2F_FLAG_ABORT;
2494 pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
2496 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
2497 ext2fs_unmark_valid(fs);
2498 ctx->flags |= E2F_FLAG_ABORT;
2501 ext2fs_mark_super_dirty(fs);
2502 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2503 pctx.blk2 = *new_block;
2504 fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
2505 PR_1_RELOC_TO), &pctx);
2507 for (i = 0; i < num; i++) {
2509 ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i);
2511 pctx.errcode = io_channel_read_blk64(fs->io,
2512 old_block + i, 1, buf);
2514 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
2516 memset(buf, 0, fs->blocksize);
2518 pctx.blk = (*new_block) + i;
2519 pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk,
2522 fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
2524 ext2fs_free_mem(&buf);
2528 * This routine gets called at the end of pass 1 if bad blocks are
2529 * detected in the superblock, group descriptors, inode_bitmaps, or
2530 * block bitmaps. At this point, all of the blocks have been mapped
2531 * out, so we can try to allocate new block(s) to replace the bad
2534 static void handle_fs_bad_blocks(e2fsck_t ctx)
2536 ext2_filsys fs = ctx->fs;
2538 blk64_t first_block;
2541 for (i = 0; i < fs->group_desc_count; i++) {
2542 first_block = ext2fs_group_first_block2(fs, i);
2544 if (ctx->invalid_block_bitmap_flag[i]) {
2545 new_blk = ext2fs_block_bitmap_loc(fs, i);
2546 new_table_block(ctx, first_block, i, _("block bitmap"),
2548 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2550 if (ctx->invalid_inode_bitmap_flag[i]) {
2551 new_blk = ext2fs_inode_bitmap_loc(fs, i);
2552 new_table_block(ctx, first_block, i, _("inode bitmap"),
2554 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2556 if (ctx->invalid_inode_table_flag[i]) {
2557 new_blk = ext2fs_inode_table_loc(fs, i);
2558 new_table_block(ctx, first_block, i, _("inode table"),
2559 fs->inode_blocks_per_group,
2561 ext2fs_inode_table_loc_set(fs, i, new_blk);
2562 ctx->flags |= E2F_FLAG_RESTART;
2565 ctx->invalid_bitmaps = 0;
2569 * This routine marks all blocks which are used by the superblock,
2570 * group descriptors, inode bitmaps, and block bitmaps.
2572 static void mark_table_blocks(e2fsck_t ctx)
2574 ext2_filsys fs = ctx->fs;
2578 struct problem_context pctx;
2580 clear_problem_context(&pctx);
2582 for (i = 0; i < fs->group_desc_count; i++) {
2585 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
2588 * Mark the blocks used for the inode table
2590 if (ext2fs_inode_table_loc(fs, i)) {
2591 for (j = 0, b = ext2fs_inode_table_loc(fs, i);
2592 j < fs->inode_blocks_per_group;
2594 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
2597 if (!ctx->invalid_inode_table_flag[i] &&
2599 PR_1_ITABLE_CONFLICT, &pctx)) {
2600 ctx->invalid_inode_table_flag[i]++;
2601 ctx->invalid_bitmaps++;
2604 ext2fs_mark_block_bitmap2(ctx->block_found_map,
2611 * Mark block used for the block bitmap
2613 if (ext2fs_block_bitmap_loc(fs, i)) {
2614 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
2615 ext2fs_block_bitmap_loc(fs, i))) {
2616 pctx.blk = ext2fs_block_bitmap_loc(fs, i);
2617 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
2618 ctx->invalid_block_bitmap_flag[i]++;
2619 ctx->invalid_bitmaps++;
2622 ext2fs_mark_block_bitmap2(ctx->block_found_map,
2623 ext2fs_block_bitmap_loc(fs, i));
2628 * Mark block used for the inode bitmap
2630 if (ext2fs_inode_bitmap_loc(fs, i)) {
2631 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
2632 ext2fs_inode_bitmap_loc(fs, i))) {
2633 pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
2634 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
2635 ctx->invalid_inode_bitmap_flag[i]++;
2636 ctx->invalid_bitmaps++;
2639 ext2fs_mark_block_bitmap2(ctx->block_found_map,
2640 ext2fs_inode_bitmap_loc(fs, i));
2647 * Thes subroutines short circuits ext2fs_get_blocks and
2648 * ext2fs_check_directory; we use them since we already have the inode
2649 * structure, so there's no point in letting the ext2fs library read
2652 static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
2655 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
2658 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
2659 return EXT2_ET_CALLBACK_NOTHANDLED;
2661 for (i=0; i < EXT2_N_BLOCKS; i++)
2662 blocks[i] = ctx->stashed_inode->i_block[i];
2666 static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
2667 struct ext2_inode *inode)
2669 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
2671 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
2672 return EXT2_ET_CALLBACK_NOTHANDLED;
2673 *inode = *ctx->stashed_inode;
2677 static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
2678 struct ext2_inode *inode)
2680 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
2682 if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
2683 (inode != ctx->stashed_inode))
2684 *ctx->stashed_inode = *inode;
2685 return EXT2_ET_CALLBACK_NOTHANDLED;
2688 static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
2690 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
2692 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
2693 return EXT2_ET_CALLBACK_NOTHANDLED;
2695 if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
2696 return EXT2_ET_NO_DIRECTORY;
2700 static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal,
2703 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
2707 if (ctx->block_found_map) {
2708 retval = ext2fs_new_block2(fs, goal, ctx->block_found_map,
2712 if (fs->block_map) {
2713 ext2fs_mark_block_bitmap2(fs->block_map, new_block);
2714 ext2fs_mark_bb_dirty(fs);
2717 if (!fs->block_map) {
2718 retval = ext2fs_read_block_bitmap(fs);
2723 retval = ext2fs_new_block2(fs, goal, 0, &new_block);
2732 static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
2734 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
2736 if (ctx->block_found_map) {
2738 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
2740 ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk);
2744 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int bool)
2746 ext2_filsys fs = ctx->fs;
2749 fs->get_blocks = pass1_get_blocks;
2750 fs->check_directory = pass1_check_directory;
2751 fs->read_inode = pass1_read_inode;
2752 fs->write_inode = pass1_write_inode;
2753 ctx->stashed_ino = 0;
2754 ext2fs_set_alloc_block_callback(fs, e2fsck_get_alloc_block,
2756 ext2fs_set_block_alloc_stats_callback(fs,
2757 e2fsck_block_alloc_stats,
2761 fs->check_directory = 0;
2763 fs->write_inode = 0;