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, blk_t *blocknr,
59 e2_blkcnt_t blockcnt, blk_t ref_blk,
60 int ref_offset, void *priv_data);
61 static int process_bad_block(ext2_filsys fs, blk_t *block_nr,
62 e2_blkcnt_t blockcnt, blk_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, blk_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 int num_illegal_blocks;
88 struct ext2_inode *inode;
89 struct problem_context *pctx;
90 ext2fs_block_bitmap fs_meta_blocks;
94 struct process_inode_block {
96 struct ext2_inode inode;
99 struct scan_callback_struct {
105 * For the inodes to process list.
107 static struct process_inode_block *inodes_to_process;
108 static int process_inode_count;
110 static __u64 ext2_max_sizes[EXT2_MAX_BLOCK_LOG_SIZE -
111 EXT2_MIN_BLOCK_LOG_SIZE + 1];
114 * Free all memory allocated by pass1 in preparation for restarting
117 static void unwind_pass1(ext2_filsys fs EXT2FS_ATTR((unused)))
119 ext2fs_free_mem(&inodes_to_process);
120 inodes_to_process = 0;
124 * Check to make sure a device inode is real. Returns 1 if the device
125 * checks out, 0 if not.
127 * Note: this routine is now also used to check FIFO's and Sockets,
128 * since they have the same requirement; the i_block fields should be
131 int e2fsck_pass1_check_device_inode(ext2_filsys fs EXT2FS_ATTR((unused)),
132 struct ext2_inode *inode)
137 * If the index flag is set, then this is a bogus
140 if (inode->i_flags & EXT2_INDEX_FL)
144 * We should be able to do the test below all the time, but
145 * because the kernel doesn't forcibly clear the device
146 * inode's additional i_block fields, there are some rare
147 * occasions when a legitimate device inode will have non-zero
148 * additional i_block fields. So for now, we only complain
149 * when the immutable flag is set, which should never happen
150 * for devices. (And that's when the problem is caused, since
151 * you can't set or clear immutable flags for devices.) Once
152 * the kernel has been fixed we can change this...
154 if (inode->i_flags & (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)) {
155 for (i=4; i < EXT2_N_BLOCKS; i++)
156 if (inode->i_block[i])
163 * Check to make sure a symlink inode is real. Returns 1 if the symlink
164 * checks out, 0 if not.
166 int e2fsck_pass1_check_symlink(ext2_filsys fs, struct ext2_inode *inode,
173 if ((inode->i_size_high || inode->i_size == 0) ||
174 (inode->i_flags & EXT2_INDEX_FL))
177 blocks = ext2fs_inode_data_blocks(fs, inode);
179 if ((inode->i_size >= fs->blocksize) ||
180 (blocks != fs->blocksize >> 9) ||
181 (inode->i_block[0] < fs->super->s_first_data_block) ||
182 (inode->i_block[0] >= fs->super->s_blocks_count))
185 for (i = 1; i < EXT2_N_BLOCKS; i++)
186 if (inode->i_block[i])
189 if (io_channel_read_blk(fs->io, inode->i_block[0], 1, buf))
192 len = strnlen(buf, fs->blocksize);
193 if (len == fs->blocksize)
196 if (inode->i_size >= sizeof(inode->i_block))
199 len = strnlen((char *)inode->i_block, sizeof(inode->i_block));
200 if (len == sizeof(inode->i_block))
203 if (len != inode->i_size)
209 * If the immutable (or append-only) flag is set on the inode, offer
212 #define BAD_SPECIAL_FLAGS (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)
213 static void check_immutable(e2fsck_t ctx, struct problem_context *pctx)
215 if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
218 if (!fix_problem(ctx, PR_1_SET_IMMUTABLE, pctx))
221 pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
222 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
226 * If device, fifo or socket, check size is zero -- if not offer to
229 static void check_size(e2fsck_t ctx, struct problem_context *pctx)
231 struct ext2_inode *inode = pctx->inode;
233 if ((inode->i_size == 0) && (inode->i_size_high == 0))
236 if (!fix_problem(ctx, PR_1_SET_NONZSIZE, pctx))
240 inode->i_size_high = 0;
241 e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
244 static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx)
246 struct ext2_super_block *sb = ctx->fs->super;
247 struct ext2_inode_large *inode;
248 struct ext2_ext_attr_entry *entry;
250 unsigned int storage_size, remain;
253 inode = (struct ext2_inode_large *) pctx->inode;
254 storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE -
255 inode->i_extra_isize;
256 start = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
257 inode->i_extra_isize + sizeof(__u32);
258 end = (char *) inode + EXT2_INODE_SIZE(ctx->fs->super);
259 entry = (struct ext2_ext_attr_entry *) start;
261 /* scan all entry's headers first */
263 /* take finish entry 0UL into account */
264 remain = storage_size - sizeof(__u32);
266 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
268 /* header eats this space */
269 remain -= sizeof(struct ext2_ext_attr_entry);
271 /* is attribute name valid? */
272 if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) {
273 pctx->num = entry->e_name_len;
274 problem = PR_1_ATTR_NAME_LEN;
278 /* attribute len eats this space */
279 remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
281 /* check value size */
282 if (entry->e_value_size == 0 || entry->e_value_size > remain) {
283 pctx->num = entry->e_value_size;
284 problem = PR_1_ATTR_VALUE_SIZE;
288 /* e_value_block must be 0 in inode's ea */
289 if (entry->e_value_block != 0) {
290 pctx->num = entry->e_value_block;
291 problem = PR_1_ATTR_VALUE_BLOCK;
295 /* e_hash must be 0 in inode's ea */
296 if (entry->e_hash != 0) {
297 pctx->num = entry->e_hash;
298 problem = PR_1_ATTR_HASH;
302 remain -= entry->e_value_size;
304 entry = EXT2_EXT_ATTR_NEXT(entry);
308 * it seems like a corruption. it's very unlikely we could repair
309 * EA(s) in automatic fashion -bzzz
312 problem = PR_1_ATTR_HASH;
314 if (problem == 0 || !fix_problem(ctx, problem, pctx))
317 /* simple remove all possible EA(s) */
318 *((__u32 *)start) = 0UL;
319 e2fsck_write_inode_full(ctx, pctx->ino, (struct ext2_inode *) inode,
320 EXT2_INODE_SIZE(sb), "pass1");
323 static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx)
325 struct ext2_super_block *sb = ctx->fs->super;
326 struct ext2_inode_large *inode;
330 inode = (struct ext2_inode_large *) pctx->inode;
331 if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) {
332 /* this isn't large inode. so, nothing to check */
337 printf("inode #%u, i_extra_size %d\n", pctx->ino,
338 inode->i_extra_isize);
340 /* i_extra_isize must cover i_extra_isize + i_pad1 at least */
341 min = sizeof(inode->i_extra_isize) + sizeof(inode->i_pad1);
342 max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE;
344 * For now we will allow i_extra_isize to be 0, but really
345 * implementations should never allow i_extra_isize to be 0
347 if (inode->i_extra_isize &&
348 (inode->i_extra_isize < min || inode->i_extra_isize > max)) {
349 if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
351 inode->i_extra_isize = min;
352 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
353 EXT2_INODE_SIZE(sb), "pass1");
357 eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
358 inode->i_extra_isize);
359 if (*eamagic == EXT2_EXT_ATTR_MAGIC) {
360 /* it seems inode has an extended attribute(s) in body */
361 check_ea_in_inode(ctx, pctx);
366 * Check to see if the inode might really be a directory, despite i_mode
368 * This is a lot of complexity for something for which I'm not really
369 * convinced happens frequently in the wild. If for any reason this
370 * causes any problems, take this code out.
371 * [tytso:20070331.0827EDT]
373 static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
376 struct ext2_inode *inode = pctx->inode;
377 struct ext2_dir_entry *dirent;
381 int i, not_device = 0;
383 if (LINUX_S_ISDIR(inode->i_mode) || LINUX_S_ISREG(inode->i_mode) ||
384 LINUX_S_ISLNK(inode->i_mode) || inode->i_block[0] == 0)
387 for (i=0; i < EXT2_N_BLOCKS; i++) {
388 blk = inode->i_block[i];
394 if (blk < ctx->fs->super->s_first_data_block ||
395 blk >= ctx->fs->super->s_blocks_count ||
396 ext2fs_fast_test_block_bitmap(ctx->block_found_map, blk))
397 return; /* Invalid block, can't be dir */
400 if ((LINUX_S_ISCHR(inode->i_mode) || LINUX_S_ISBLK(inode->i_mode)) &&
401 (inode->i_links_count == 1) && !not_device)
404 old_op = ehandler_operation(_("reading directory block"));
405 retval = ext2fs_read_dir_block(ctx->fs, inode->i_block[0], buf);
406 ehandler_operation(0);
410 dirent = (struct ext2_dir_entry *) buf;
411 if (((dirent->name_len & 0xFF) != 1) ||
412 (dirent->name[0] != '.') ||
413 (dirent->inode != pctx->ino) ||
414 (dirent->rec_len < 12) ||
415 (dirent->rec_len % 4) ||
416 (dirent->rec_len >= ctx->fs->blocksize - 12))
419 dirent = (struct ext2_dir_entry *) (buf + dirent->rec_len);
420 if (((dirent->name_len & 0xFF) != 2) ||
421 (dirent->name[0] != '.') ||
422 (dirent->name[1] != '.') ||
423 (dirent->rec_len < 12) ||
424 (dirent->rec_len % 4))
427 if (fix_problem(ctx, PR_1_TREAT_AS_DIRECTORY, pctx)) {
428 inode->i_mode = (inode->i_mode & 07777) | LINUX_S_IFDIR;
429 e2fsck_write_inode_full(ctx, pctx->ino, inode,
430 EXT2_INODE_SIZE(ctx->fs->super),
431 "check_is_really_dir");
435 extern void e2fsck_setup_tdb_icount(e2fsck_t ctx, int flags,
438 unsigned int threshold;
446 profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
448 profile_get_uint(ctx->profile, "scratch_files",
449 "numdirs_threshold", 0, 0, &threshold);
450 profile_get_boolean(ctx->profile, "scratch_files",
451 "icount", 0, 1, &enable);
453 retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
455 num_dirs = 1024; /* Guess */
457 if (!enable || !tdb_dir || access(tdb_dir, W_OK) ||
458 (threshold && num_dirs <= threshold))
461 retval = ext2fs_create_icount_tdb(ctx->fs, tdb_dir, flags, ret);
466 void e2fsck_pass1(e2fsck_t ctx)
470 ext2_filsys fs = ctx->fs;
472 struct ext2_inode *inode;
473 ext2_inode_scan scan;
475 #ifdef RESOURCE_TRACK
476 struct resource_track rtrack;
478 unsigned char frag, fsize;
479 struct problem_context pctx;
480 struct scan_callback_struct scan_struct;
481 struct ext2_super_block *sb = ctx->fs->super;
484 int busted_fs_time = 0;
487 #ifdef RESOURCE_TRACK
488 init_resource_track(&rtrack, ctx->fs->io);
490 clear_problem_context(&pctx);
492 if (!(ctx->options & E2F_OPT_PREEN))
493 fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
495 if ((fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) &&
496 !(ctx->options & E2F_OPT_NO)) {
497 if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
498 ctx->dirs_to_hash = 0;
502 mtrace_print("Pass 1");
505 #define EXT2_BPP(bits) (1ULL << ((bits) - 2))
507 for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
508 max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
509 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
510 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
511 max_sizes = (max_sizes * (1UL << i)) - 1;
512 ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
516 imagic_fs = (sb->s_feature_compat & EXT2_FEATURE_COMPAT_IMAGIC_INODES);
519 * Allocate bitmaps structures
521 pctx.errcode = ext2fs_allocate_inode_bitmap(fs, _("in-use inode map"),
522 &ctx->inode_used_map);
525 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
526 ctx->flags |= E2F_FLAG_ABORT;
529 pctx.errcode = ext2fs_allocate_inode_bitmap(fs,
530 _("directory inode map"), &ctx->inode_dir_map);
533 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
534 ctx->flags |= E2F_FLAG_ABORT;
537 pctx.errcode = ext2fs_allocate_inode_bitmap(fs,
538 _("regular file inode map"), &ctx->inode_reg_map);
541 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
542 ctx->flags |= E2F_FLAG_ABORT;
545 pctx.errcode = ext2fs_allocate_block_bitmap(fs, _("in-use block map"),
546 &ctx->block_found_map);
549 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
550 ctx->flags |= E2F_FLAG_ABORT;
553 e2fsck_setup_tdb_icount(ctx, 0, &ctx->inode_link_info);
554 if (!ctx->inode_link_info)
555 pctx.errcode = ext2fs_create_icount2(fs, 0, 0, 0,
556 &ctx->inode_link_info);
558 fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
559 ctx->flags |= E2F_FLAG_ABORT;
562 inode_size = EXT2_INODE_SIZE(fs->super);
563 inode = (struct ext2_inode *)
564 e2fsck_allocate_memory(ctx, inode_size, "scratch inode");
566 inodes_to_process = (struct process_inode_block *)
567 e2fsck_allocate_memory(ctx,
568 (ctx->process_inode_size *
569 sizeof(struct process_inode_block)),
570 "array of inodes to process");
571 process_inode_count = 0;
573 pctx.errcode = ext2fs_init_dblist(fs, 0);
575 fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
576 ctx->flags |= E2F_FLAG_ABORT;
577 ext2fs_free_mem(&inode);
582 * If the last orphan field is set, clear it, since the pass1
583 * processing will automatically find and clear the orphans.
584 * In the future, we may want to try using the last_orphan
585 * linked list ourselves, but for now, we clear it so that the
586 * ext3 mount code won't get confused.
588 if (!(ctx->options & E2F_OPT_READONLY)) {
589 if (fs->super->s_last_orphan) {
590 fs->super->s_last_orphan = 0;
591 ext2fs_mark_super_dirty(fs);
595 mark_table_blocks(ctx);
596 block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
597 "block interate buffer");
598 e2fsck_use_inode_shortcuts(ctx, 1);
599 old_op = ehandler_operation(_("opening inode scan"));
600 pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
602 ehandler_operation(old_op);
604 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
605 ctx->flags |= E2F_FLAG_ABORT;
606 ext2fs_free_mem(&block_buf);
607 ext2fs_free_mem(&inode);
610 ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE, 0);
611 ctx->stashed_inode = inode;
612 scan_struct.ctx = ctx;
613 scan_struct.block_buf = block_buf;
614 ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
616 if ((ctx->progress)(ctx, 1, 0, ctx->fs->group_desc_count))
618 if ((fs->super->s_wtime < fs->super->s_inodes_count) ||
619 (fs->super->s_mtime < fs->super->s_inodes_count))
623 old_op = ehandler_operation(_("getting next inode from scan"));
624 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
626 ehandler_operation(old_op);
627 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
629 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
630 if (!ctx->inode_bb_map)
632 ext2fs_mark_inode_bitmap(ctx->inode_bb_map, ino);
633 ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino);
637 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
638 ctx->flags |= E2F_FLAG_ABORT;
645 ctx->stashed_ino = ino;
646 if (inode->i_links_count) {
647 pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
648 ino, inode->i_links_count);
650 pctx.num = inode->i_links_count;
651 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
652 ctx->flags |= E2F_FLAG_ABORT;
656 if (ino == EXT2_BAD_INO) {
657 struct process_block_struct pb;
659 pctx.errcode = ext2fs_copy_bitmap(ctx->block_found_map,
663 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
664 ctx->flags |= E2F_FLAG_ABORT;
667 pb.ino = EXT2_BAD_INO;
668 pb.num_blocks = pb.last_block = 0;
669 pb.num_illegal_blocks = 0;
670 pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
671 pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
675 pctx.errcode = ext2fs_block_iterate2(fs, ino, 0,
676 block_buf, process_bad_block, &pb);
677 ext2fs_free_block_bitmap(pb.fs_meta_blocks);
679 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
680 ctx->flags |= E2F_FLAG_ABORT;
684 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
685 ctx->flags |= E2F_FLAG_ABORT;
688 ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino);
689 clear_problem_context(&pctx);
691 } else if (ino == EXT2_ROOT_INO) {
693 * Make sure the root inode is a directory; if
694 * not, offer to clear it. It will be
695 * regnerated in pass #3.
697 if (!LINUX_S_ISDIR(inode->i_mode)) {
698 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx)) {
699 inode->i_dtime = ctx->now;
700 inode->i_links_count = 0;
701 ext2fs_icount_store(ctx->inode_link_info,
703 e2fsck_write_inode(ctx, ino, inode,
709 * If dtime is set, offer to clear it. mke2fs
710 * version 0.2b created filesystems with the
711 * dtime field set for the root and lost+found
712 * directories. We won't worry about
713 * /lost+found, since that can be regenerated
714 * easily. But we will fix the root directory
717 if (inode->i_dtime && inode->i_links_count) {
718 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
720 e2fsck_write_inode(ctx, ino, inode,
724 } else if (ino == EXT2_JOURNAL_INO) {
725 ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino);
726 if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
727 if (!LINUX_S_ISREG(inode->i_mode) &&
728 fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
730 inode->i_mode = LINUX_S_IFREG;
731 e2fsck_write_inode(ctx, ino, inode,
734 check_blocks(ctx, &pctx, block_buf);
737 if ((inode->i_links_count || inode->i_blocks ||
738 inode->i_blocks || inode->i_block[0]) &&
739 fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
741 memset(inode, 0, inode_size);
742 ext2fs_icount_store(ctx->inode_link_info,
744 e2fsck_write_inode_full(ctx, ino, inode,
745 inode_size, "pass1");
747 } else if (ino < EXT2_FIRST_INODE(fs->super)) {
750 ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino);
751 if (ino == EXT2_BOOT_LOADER_INO) {
752 if (LINUX_S_ISDIR(inode->i_mode))
753 problem = PR_1_RESERVED_BAD_MODE;
754 } else if (ino == EXT2_RESIZE_INO) {
756 !LINUX_S_ISREG(inode->i_mode))
757 problem = PR_1_RESERVED_BAD_MODE;
759 if (inode->i_mode != 0)
760 problem = PR_1_RESERVED_BAD_MODE;
763 if (fix_problem(ctx, problem, &pctx)) {
765 e2fsck_write_inode(ctx, ino, inode,
769 check_blocks(ctx, &pctx, block_buf);
773 * Check for inodes who might have been part of the
774 * orphaned list linked list. They should have gotten
775 * dealt with by now, unless the list had somehow been
778 * FIXME: In the future, inodes which are still in use
779 * (and which are therefore) pending truncation should
780 * be handled specially. Right now we just clear the
781 * dtime field, and the normal e2fsck handling of
782 * inodes where i_size and the inode blocks are
783 * inconsistent is to fix i_size, instead of releasing
784 * the extra blocks. This won't catch the inodes that
785 * was at the end of the orphan list, but it's better
786 * than nothing. The right answer is that there
787 * shouldn't be any bugs in the orphan list handling. :-)
789 if (inode->i_dtime && !busted_fs_time &&
790 inode->i_dtime < ctx->fs->super->s_inodes_count) {
791 if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
792 inode->i_dtime = inode->i_links_count ?
794 e2fsck_write_inode(ctx, ino, inode,
800 * This code assumes that deleted inodes have
801 * i_links_count set to 0.
803 if (!inode->i_links_count) {
804 if (!inode->i_dtime && inode->i_mode) {
806 PR_1_ZERO_DTIME, &pctx)) {
807 inode->i_dtime = ctx->now;
808 e2fsck_write_inode(ctx, ino, inode,
815 * n.b. 0.3c ext2fs code didn't clear i_links_count for
816 * deleted files. Oops.
818 * Since all new ext2 implementations get this right,
819 * we now assume that the case of non-zero
820 * i_links_count and non-zero dtime means that we
821 * should keep the file, not delete it.
824 if (inode->i_dtime) {
825 if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
827 e2fsck_write_inode(ctx, ino, inode, "pass1");
831 ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino);
832 switch (fs->super->s_creator_os) {
834 frag = inode->osd2.hurd2.h_i_frag;
835 fsize = inode->osd2.hurd2.h_i_fsize;
838 frag = inode->osd2.masix2.m_i_frag;
839 fsize = inode->osd2.masix2.m_i_fsize;
845 if (inode->i_faddr || frag || fsize ||
846 (LINUX_S_ISDIR(inode->i_mode) && inode->i_dir_acl))
847 mark_inode_bad(ctx, ino);
848 if ((fs->super->s_creator_os == EXT2_OS_LINUX) &&
849 !(fs->super->s_feature_ro_compat &
850 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) &&
851 (inode->osd2.linux2.l_i_blocks_hi != 0))
852 mark_inode_bad(ctx, ino);
853 if (inode->i_flags & EXT2_IMAGIC_FL) {
855 if (!ctx->inode_imagic_map)
856 alloc_imagic_map(ctx);
857 ext2fs_mark_inode_bitmap(ctx->inode_imagic_map,
860 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
861 inode->i_flags &= ~EXT2_IMAGIC_FL;
862 e2fsck_write_inode(ctx, ino,
868 check_inode_extra_space(ctx, &pctx);
869 check_is_really_dir(ctx, &pctx, block_buf);
871 if (LINUX_S_ISDIR(inode->i_mode)) {
872 ext2fs_mark_inode_bitmap(ctx->inode_dir_map, ino);
873 e2fsck_add_dir_info(ctx, ino, 0);
874 ctx->fs_directory_count++;
875 } else if (LINUX_S_ISREG (inode->i_mode)) {
876 ext2fs_mark_inode_bitmap(ctx->inode_reg_map, ino);
877 ctx->fs_regular_count++;
878 } else if (LINUX_S_ISCHR (inode->i_mode) &&
879 e2fsck_pass1_check_device_inode(fs, inode)) {
880 check_immutable(ctx, &pctx);
881 check_size(ctx, &pctx);
882 ctx->fs_chardev_count++;
883 } else if (LINUX_S_ISBLK (inode->i_mode) &&
884 e2fsck_pass1_check_device_inode(fs, inode)) {
885 check_immutable(ctx, &pctx);
886 check_size(ctx, &pctx);
887 ctx->fs_blockdev_count++;
888 } else if (LINUX_S_ISLNK (inode->i_mode) &&
889 e2fsck_pass1_check_symlink(fs, inode, block_buf)) {
890 check_immutable(ctx, &pctx);
891 ctx->fs_symlinks_count++;
892 if (ext2fs_inode_data_blocks(fs, inode) == 0) {
893 ctx->fs_fast_symlinks_count++;
894 check_blocks(ctx, &pctx, block_buf);
898 else if (LINUX_S_ISFIFO (inode->i_mode) &&
899 e2fsck_pass1_check_device_inode(fs, inode)) {
900 check_immutable(ctx, &pctx);
901 check_size(ctx, &pctx);
902 ctx->fs_fifo_count++;
903 } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
904 e2fsck_pass1_check_device_inode(fs, inode)) {
905 check_immutable(ctx, &pctx);
906 check_size(ctx, &pctx);
907 ctx->fs_sockets_count++;
909 mark_inode_bad(ctx, ino);
910 if (inode->i_block[EXT2_IND_BLOCK])
912 if (inode->i_block[EXT2_DIND_BLOCK])
913 ctx->fs_dind_count++;
914 if (inode->i_block[EXT2_TIND_BLOCK])
915 ctx->fs_tind_count++;
916 if (inode->i_block[EXT2_IND_BLOCK] ||
917 inode->i_block[EXT2_DIND_BLOCK] ||
918 inode->i_block[EXT2_TIND_BLOCK] ||
920 inodes_to_process[process_inode_count].ino = ino;
921 inodes_to_process[process_inode_count].inode = *inode;
922 process_inode_count++;
924 check_blocks(ctx, &pctx, block_buf);
926 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
929 if (process_inode_count >= ctx->process_inode_size) {
930 process_inodes(ctx, block_buf);
932 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
936 process_inodes(ctx, block_buf);
937 ext2fs_close_inode_scan(scan);
940 * If any extended attribute blocks' reference counts need to
941 * be adjusted, either up (ctx->refcount_extra), or down
942 * (ctx->refcount), then fix them.
945 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
946 ea_refcount_free(ctx->refcount);
949 if (ctx->refcount_extra) {
950 adjust_extattr_refcount(ctx, ctx->refcount_extra,
952 ea_refcount_free(ctx->refcount_extra);
953 ctx->refcount_extra = 0;
956 if (ctx->invalid_bitmaps)
957 handle_fs_bad_blocks(ctx);
959 /* We don't need the block_ea_map any more */
960 if (ctx->block_ea_map) {
961 ext2fs_free_block_bitmap(ctx->block_ea_map);
962 ctx->block_ea_map = 0;
965 if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
966 ext2fs_block_bitmap save_bmap;
968 save_bmap = fs->block_map;
969 fs->block_map = ctx->block_found_map;
970 clear_problem_context(&pctx);
971 pctx.errcode = ext2fs_create_resize_inode(fs);
973 fix_problem(ctx, PR_1_RESIZE_INODE_CREATE, &pctx);
974 /* Should never get here */
975 ctx->flags |= E2F_FLAG_ABORT;
978 e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
980 inode->i_mtime = ctx->now;
981 e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
983 fs->block_map = save_bmap;
984 ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
987 if (ctx->flags & E2F_FLAG_RESTART) {
989 * Only the master copy of the superblock and block
990 * group descriptors are going to be written during a
991 * restart, so set the superblock to be used to be the
994 ctx->use_superblock = 0;
999 if (ctx->block_dup_map) {
1000 if (ctx->options & E2F_OPT_PREEN) {
1001 clear_problem_context(&pctx);
1002 fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
1004 e2fsck_pass1_dupblocks(ctx, block_buf);
1006 ext2fs_free_mem(&inodes_to_process);
1008 e2fsck_use_inode_shortcuts(ctx, 0);
1010 ext2fs_free_mem(&block_buf);
1011 ext2fs_free_mem(&inode);
1013 #ifdef RESOURCE_TRACK
1014 if (ctx->options & E2F_OPT_TIME2) {
1015 e2fsck_clear_progbar(ctx);
1016 print_resource_track(_("Pass 1"), &rtrack, ctx->fs->io);
1022 * When the inode_scan routines call this callback at the end of the
1023 * glock group, call process_inodes.
1025 static errcode_t scan_callback(ext2_filsys fs,
1026 ext2_inode_scan scan EXT2FS_ATTR((unused)),
1027 dgrp_t group, void * priv_data)
1029 struct scan_callback_struct *scan_struct;
1032 scan_struct = (struct scan_callback_struct *) priv_data;
1033 ctx = scan_struct->ctx;
1035 process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf);
1038 if ((ctx->progress)(ctx, 1, group+1,
1039 ctx->fs->group_desc_count))
1040 return EXT2_ET_CANCEL_REQUESTED;
1046 * Process the inodes in the "inodes to process" list.
1048 static void process_inodes(e2fsck_t ctx, char *block_buf)
1051 struct ext2_inode *old_stashed_inode;
1052 ext2_ino_t old_stashed_ino;
1053 const char *old_operation;
1055 struct problem_context pctx;
1058 printf("begin process_inodes: ");
1060 if (process_inode_count == 0)
1062 old_operation = ehandler_operation(0);
1063 old_stashed_inode = ctx->stashed_inode;
1064 old_stashed_ino = ctx->stashed_ino;
1065 qsort(inodes_to_process, process_inode_count,
1066 sizeof(struct process_inode_block), process_inode_cmp);
1067 clear_problem_context(&pctx);
1068 for (i=0; i < process_inode_count; i++) {
1069 pctx.inode = ctx->stashed_inode = &inodes_to_process[i].inode;
1070 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
1073 printf("%u ", pctx.ino);
1075 sprintf(buf, _("reading indirect blocks of inode %u"),
1077 ehandler_operation(buf);
1078 check_blocks(ctx, &pctx, block_buf);
1079 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1082 ctx->stashed_inode = old_stashed_inode;
1083 ctx->stashed_ino = old_stashed_ino;
1084 process_inode_count = 0;
1086 printf("end process inodes\n");
1088 ehandler_operation(old_operation);
1091 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
1093 const struct process_inode_block *ib_a =
1094 (const struct process_inode_block *) a;
1095 const struct process_inode_block *ib_b =
1096 (const struct process_inode_block *) b;
1099 ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
1100 ib_b->inode.i_block[EXT2_IND_BLOCK]);
1102 ret = ib_a->inode.i_file_acl - ib_b->inode.i_file_acl;
1107 * Mark an inode as being bad in some what
1109 static void mark_inode_bad(e2fsck_t ctx, ino_t ino)
1111 struct problem_context pctx;
1113 if (!ctx->inode_bad_map) {
1114 clear_problem_context(&pctx);
1116 pctx.errcode = ext2fs_allocate_inode_bitmap(ctx->fs,
1117 _("bad inode map"), &ctx->inode_bad_map);
1120 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1121 /* Should never get here */
1122 ctx->flags |= E2F_FLAG_ABORT;
1126 ext2fs_mark_inode_bitmap(ctx->inode_bad_map, ino);
1131 * This procedure will allocate the inode "bb" (badblock) map table
1133 static void alloc_bb_map(e2fsck_t ctx)
1135 struct problem_context pctx;
1137 clear_problem_context(&pctx);
1138 pctx.errcode = ext2fs_allocate_inode_bitmap(ctx->fs,
1139 _("inode in bad block map"),
1140 &ctx->inode_bb_map);
1143 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1144 /* Should never get here */
1145 ctx->flags |= E2F_FLAG_ABORT;
1151 * This procedure will allocate the inode imagic table
1153 static void alloc_imagic_map(e2fsck_t ctx)
1155 struct problem_context pctx;
1157 clear_problem_context(&pctx);
1158 pctx.errcode = ext2fs_allocate_inode_bitmap(ctx->fs,
1159 _("imagic inode map"),
1160 &ctx->inode_imagic_map);
1163 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1164 /* Should never get here */
1165 ctx->flags |= E2F_FLAG_ABORT;
1171 * Marks a block as in use, setting the dup_map if it's been set
1172 * already. Called by process_block and process_bad_block.
1174 * WARNING: Assumes checks have already been done to make sure block
1175 * is valid. This is true in both process_block and process_bad_block.
1177 static _INLINE_ void mark_block_used(e2fsck_t ctx, blk_t block)
1179 struct problem_context pctx;
1181 clear_problem_context(&pctx);
1183 if (ext2fs_fast_test_block_bitmap(ctx->block_found_map, block)) {
1184 if (!ctx->block_dup_map) {
1185 pctx.errcode = ext2fs_allocate_block_bitmap(ctx->fs,
1186 _("multiply claimed block map"),
1187 &ctx->block_dup_map);
1190 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
1192 /* Should never get here */
1193 ctx->flags |= E2F_FLAG_ABORT;
1197 ext2fs_fast_mark_block_bitmap(ctx->block_dup_map, block);
1199 ext2fs_fast_mark_block_bitmap(ctx->block_found_map, block);
1204 * Adjust the extended attribute block's reference counts at the end
1205 * of pass 1, either by subtracting out references for EA blocks that
1206 * are still referenced in ctx->refcount, or by adding references for
1207 * EA blocks that had extra references as accounted for in
1208 * ctx->refcount_extra.
1210 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
1211 char *block_buf, int adjust_sign)
1213 struct ext2_ext_attr_header *header;
1214 struct problem_context pctx;
1215 ext2_filsys fs = ctx->fs;
1220 clear_problem_context(&pctx);
1222 ea_refcount_intr_begin(refcount);
1224 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
1227 pctx.errcode = ext2fs_read_ext_attr(fs, blk, block_buf);
1229 fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
1232 header = (struct ext2_ext_attr_header *) block_buf;
1233 pctx.blkcount = header->h_refcount;
1234 should_be = header->h_refcount + adjust_sign * count;
1235 pctx.num = should_be;
1236 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
1237 header->h_refcount = should_be;
1238 pctx.errcode = ext2fs_write_ext_attr(fs, blk,
1241 fix_problem(ctx, PR_1_EXTATTR_WRITE, &pctx);
1249 * Handle processing the extended attribute blocks
1251 static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
1254 ext2_filsys fs = ctx->fs;
1255 ext2_ino_t ino = pctx->ino;
1256 struct ext2_inode *inode = pctx->inode;
1259 struct ext2_ext_attr_header *header;
1260 struct ext2_ext_attr_entry *entry;
1262 region_t region = 0;
1264 blk = inode->i_file_acl;
1269 * If the Extended attribute flag isn't set, then a non-zero
1270 * file acl means that the inode is corrupted.
1272 * Or if the extended attribute block is an invalid block,
1273 * then the inode is also corrupted.
1275 if (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR) ||
1276 (blk < fs->super->s_first_data_block) ||
1277 (blk >= fs->super->s_blocks_count)) {
1278 mark_inode_bad(ctx, ino);
1282 /* If ea bitmap hasn't been allocated, create it */
1283 if (!ctx->block_ea_map) {
1284 pctx->errcode = ext2fs_allocate_block_bitmap(fs,
1285 _("ext attr block map"),
1286 &ctx->block_ea_map);
1287 if (pctx->errcode) {
1289 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
1290 ctx->flags |= E2F_FLAG_ABORT;
1295 /* Create the EA refcount structure if necessary */
1296 if (!ctx->refcount) {
1297 pctx->errcode = ea_refcount_create(0, &ctx->refcount);
1298 if (pctx->errcode) {
1300 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
1301 ctx->flags |= E2F_FLAG_ABORT;
1307 /* Debugging text */
1308 printf("Inode %u has EA block %u\n", ino, blk);
1311 /* Have we seen this EA block before? */
1312 if (ext2fs_fast_test_block_bitmap(ctx->block_ea_map, blk)) {
1313 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
1315 /* Ooops, this EA was referenced more than it stated */
1316 if (!ctx->refcount_extra) {
1317 pctx->errcode = ea_refcount_create(0,
1318 &ctx->refcount_extra);
1319 if (pctx->errcode) {
1321 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
1322 ctx->flags |= E2F_FLAG_ABORT;
1326 ea_refcount_increment(ctx->refcount_extra, blk, 0);
1331 * OK, we haven't seen this EA block yet. So we need to
1335 pctx->errcode = ext2fs_read_ext_attr(fs, blk, block_buf);
1336 if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
1338 header = (struct ext2_ext_attr_header *) block_buf;
1339 pctx->blk = inode->i_file_acl;
1340 if (((ctx->ext_attr_ver == 1) &&
1341 (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
1342 ((ctx->ext_attr_ver == 2) &&
1343 (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
1344 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
1348 if (header->h_blocks != 1) {
1349 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
1353 region = region_create(0, fs->blocksize);
1355 fix_problem(ctx, PR_1_EA_ALLOC_REGION, pctx);
1356 ctx->flags |= E2F_FLAG_ABORT;
1359 if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
1360 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
1364 entry = (struct ext2_ext_attr_entry *)(header+1);
1365 end = block_buf + fs->blocksize;
1366 while ((char *)entry < end && *(__u32 *)entry) {
1367 if (region_allocate(region, (char *)entry - (char *)header,
1368 EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
1369 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
1372 if ((ctx->ext_attr_ver == 1 &&
1373 (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
1374 (ctx->ext_attr_ver == 2 &&
1375 entry->e_name_index == 0)) {
1376 if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
1379 if (entry->e_value_block != 0) {
1380 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
1383 if (entry->e_value_offs + entry->e_value_size > fs->blocksize) {
1384 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
1388 if (entry->e_value_size &&
1389 region_allocate(region, entry->e_value_offs,
1390 EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
1391 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
1394 entry = EXT2_EXT_ATTR_NEXT(entry);
1396 if (region_allocate(region, (char *)entry - (char *)header, 4)) {
1397 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
1400 region_free(region);
1402 count = header->h_refcount - 1;
1404 ea_refcount_store(ctx->refcount, blk, count);
1405 mark_block_used(ctx, blk);
1406 ext2fs_fast_mark_block_bitmap(ctx->block_ea_map, blk);
1411 region_free(region);
1412 inode->i_file_acl = 0;
1413 e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
1417 /* Returns 1 if bad htree, 0 if OK */
1418 static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
1419 ext2_ino_t ino EXT2FS_ATTR((unused)),
1420 struct ext2_inode *inode,
1423 struct ext2_dx_root_info *root;
1424 ext2_filsys fs = ctx->fs;
1428 if ((!LINUX_S_ISDIR(inode->i_mode) &&
1429 fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
1430 (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) &&
1431 fix_problem(ctx, PR_1_HTREE_SET, pctx)))
1434 blk = inode->i_block[0];
1436 (blk < fs->super->s_first_data_block) ||
1437 (blk >= fs->super->s_blocks_count)) &&
1438 fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
1441 retval = io_channel_read_blk(fs->io, blk, 1, block_buf);
1442 if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
1445 /* XXX should check that beginning matches a directory */
1446 root = (struct ext2_dx_root_info *) (block_buf + 24);
1448 if ((root->reserved_zero || root->info_length < 8) &&
1449 fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
1452 pctx->num = root->hash_version;
1453 if ((root->hash_version != EXT2_HASH_LEGACY) &&
1454 (root->hash_version != EXT2_HASH_HALF_MD4) &&
1455 (root->hash_version != EXT2_HASH_TEA) &&
1456 fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
1459 if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
1460 fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
1463 pctx->num = root->indirect_levels;
1464 if ((root->indirect_levels > 1) &&
1465 fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
1472 * This subroutine is called on each inode to account for all of the
1473 * blocks used by that inode.
1475 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
1478 ext2_filsys fs = ctx->fs;
1479 struct process_block_struct pb;
1480 ext2_ino_t ino = pctx->ino;
1481 struct ext2_inode *inode = pctx->inode;
1483 int dirty_inode = 0;
1489 pb.num_illegal_blocks = 0;
1490 pb.suppress = 0; pb.clear = 0;
1493 pb.previous_block = 0;
1494 pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
1495 pb.is_reg = LINUX_S_ISREG(inode->i_mode);
1496 pb.max_blocks = 1 << (31 - fs->super->s_log_block_size);
1503 if (inode->i_flags & EXT2_COMPRBLK_FL) {
1504 if (fs->super->s_feature_incompat &
1505 EXT2_FEATURE_INCOMPAT_COMPRESSION)
1508 if (fix_problem(ctx, PR_1_COMPR_SET, pctx)) {
1509 inode->i_flags &= ~EXT2_COMPRBLK_FL;
1515 if (inode->i_file_acl && check_ext_attr(ctx, pctx, block_buf))
1518 if (ext2fs_inode_has_valid_blocks(inode))
1519 pctx->errcode = ext2fs_block_iterate2(fs, ino,
1520 pb.is_dir ? BLOCK_FLAG_HOLE : 0,
1521 block_buf, process_block, &pb);
1522 end_problem_latch(ctx, PR_LATCH_BLOCK);
1523 end_problem_latch(ctx, PR_LATCH_TOOBIG);
1524 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1527 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
1529 if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group)
1530 ctx->fs_fragmented++;
1533 inode->i_links_count = 0;
1534 ext2fs_icount_store(ctx->inode_link_info, ino, 0);
1535 inode->i_dtime = ctx->now;
1537 ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, ino);
1538 ext2fs_unmark_inode_bitmap(ctx->inode_reg_map, ino);
1539 ext2fs_unmark_inode_bitmap(ctx->inode_used_map, ino);
1541 * The inode was probably partially accounted for
1542 * before processing was aborted, so we need to
1543 * restart the pass 1 scan.
1545 ctx->flags |= E2F_FLAG_RESTART;
1549 if (inode->i_flags & EXT2_INDEX_FL) {
1550 if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
1551 inode->i_flags &= ~EXT2_INDEX_FL;
1555 e2fsck_add_dx_dir(ctx, ino, pb.last_block+1);
1559 if (ctx->dirs_to_hash && pb.is_dir &&
1560 !(inode->i_flags & EXT2_INDEX_FL) &&
1561 ((inode->i_size / fs->blocksize) >= 3))
1562 ext2fs_u32_list_add(ctx->dirs_to_hash, ino);
1564 if (!pb.num_blocks && pb.is_dir) {
1565 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
1566 inode->i_links_count = 0;
1567 ext2fs_icount_store(ctx->inode_link_info, ino, 0);
1568 inode->i_dtime = ctx->now;
1570 ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, ino);
1571 ext2fs_unmark_inode_bitmap(ctx->inode_reg_map, ino);
1572 ext2fs_unmark_inode_bitmap(ctx->inode_used_map, ino);
1573 ctx->fs_directory_count--;
1578 pb.num_blocks *= (fs->blocksize / 512);
1580 printf("inode %u, i_size = %lu, last_block = %lld, i_blocks=%lu, num_blocks = %lu\n",
1581 ino, inode->i_size, pb.last_block, inode->i_blocks,
1585 int nblock = inode->i_size >> EXT2_BLOCK_SIZE_BITS(fs->super);
1586 if (nblock > (pb.last_block + 1))
1588 else if (nblock < (pb.last_block + 1)) {
1589 if (((pb.last_block + 1) - nblock) >
1590 fs->super->s_prealloc_dir_blocks)
1594 size = EXT2_I_SIZE(inode);
1595 if ((pb.last_block >= 0) &&
1596 (size < (__u64) pb.last_block * fs->blocksize))
1598 else if (size > ext2_max_sizes[fs->super->s_log_block_size])
1601 /* i_size for symlinks is checked elsewhere */
1602 if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
1603 pctx->num = (pb.last_block+1) * fs->blocksize;
1604 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
1605 inode->i_size = pctx->num;
1606 if (!LINUX_S_ISDIR(inode->i_mode))
1607 inode->i_size_high = pctx->num >> 32;
1612 if (LINUX_S_ISREG(inode->i_mode) &&
1613 (inode->i_size_high || inode->i_size & 0x80000000UL))
1615 if (pb.num_blocks != inode->i_blocks) {
1616 pctx->num = pb.num_blocks;
1617 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
1618 inode->i_blocks = pb.num_blocks;
1625 e2fsck_write_inode(ctx, ino, inode, "check_blocks");
1630 * Helper function called by process block when an illegal block is
1631 * found. It returns a description about why the block is illegal
1633 static char *describe_illegal_block(ext2_filsys fs, blk_t block)
1637 static char problem[80];
1639 super = fs->super->s_first_data_block;
1640 strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
1641 if (block < super) {
1642 sprintf(problem, "< FIRSTBLOCK (%u)", super);
1644 } else if (block >= fs->super->s_blocks_count) {
1645 sprintf(problem, "> BLOCKS (%u)", fs->super->s_blocks_count);
1648 for (i = 0; i < fs->group_desc_count; i++) {
1649 if (block == super) {
1650 sprintf(problem, "is the superblock in group %d", i);
1653 if (block > super &&
1654 block <= (super + fs->desc_blocks)) {
1655 sprintf(problem, "is in the group descriptors "
1659 if (block == fs->group_desc[i].bg_block_bitmap) {
1660 sprintf(problem, "is the block bitmap of group %d", i);
1663 if (block == fs->group_desc[i].bg_inode_bitmap) {
1664 sprintf(problem, "is the inode bitmap of group %d", i);
1667 if (block >= fs->group_desc[i].bg_inode_table &&
1668 (block < fs->group_desc[i].bg_inode_table
1669 + fs->inode_blocks_per_group)) {
1670 sprintf(problem, "is in the inode table of group %d",
1674 super += fs->super->s_blocks_per_group;
1681 * This is a helper function for check_blocks().
1683 static int process_block(ext2_filsys fs,
1685 e2_blkcnt_t blockcnt,
1686 blk_t ref_block EXT2FS_ATTR((unused)),
1687 int ref_offset EXT2FS_ATTR((unused)),
1690 struct process_block_struct *p;
1691 struct problem_context *pctx;
1692 blk_t blk = *block_nr;
1697 p = (struct process_block_struct *) priv_data;
1701 if (p->compressed && (blk == EXT2FS_COMPRESSED_BLKADDR)) {
1702 /* todo: Check that the comprblk_fl is high, that the
1703 blkaddr pattern looks right (all non-holes up to
1704 first EXT2FS_COMPRESSED_BLKADDR, then all
1705 EXT2FS_COMPRESSED_BLKADDR up to end of cluster),
1706 that the feature_incompat bit is high, and that the
1707 inode is a regular file. If we're doing a "full
1708 check" (a concept introduced to e2fsck by e2compr,
1709 meaning that we look at data blocks as well as
1710 metadata) then call some library routine that
1711 checks the compressed data. I'll have to think
1712 about this, because one particularly important
1713 problem to be able to fix is to recalculate the
1714 cluster size if necessary. I think that perhaps
1715 we'd better do most/all e2compr-specific checks
1716 separately, after the non-e2compr checks. If not
1717 doing a full check, it may be useful to test that
1718 the personality is linux; e.g. if it isn't then
1719 perhaps this really is just an illegal block. */
1724 if (p->is_dir == 0) {
1726 * Should never happen, since only directories
1727 * get called with BLOCK_FLAG_HOLE
1730 printf("process_block() called with blk == 0, "
1731 "blockcnt=%d, inode %lu???\n",
1738 if (blockcnt * fs->blocksize < p->inode->i_size) {
1740 printf("Missing block (#%d) in directory inode %lu!\n",
1749 printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
1754 * Simplistic fragmentation check. We merely require that the
1755 * file be contiguous. (Which can never be true for really
1756 * big files that are greater than a block group.)
1758 if (!HOLE_BLKADDR(p->previous_block)) {
1759 if (p->previous_block+1 != blk)
1762 p->previous_block = blk;
1764 if (p->is_dir && blockcnt > (1 << (21 - fs->super->s_log_block_size)))
1765 problem = PR_1_TOOBIG_DIR;
1766 if (p->is_reg && p->num_blocks+1 >= p->max_blocks)
1767 problem = PR_1_TOOBIG_REG;
1768 if (!p->is_dir && !p->is_reg && blockcnt > 0)
1769 problem = PR_1_TOOBIG_SYMLINK;
1771 if (blk < fs->super->s_first_data_block ||
1772 blk >= fs->super->s_blocks_count)
1773 problem = PR_1_ILLEGAL_BLOCK_NUM;
1776 p->num_illegal_blocks++;
1777 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
1778 if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
1782 if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
1784 set_latch_flags(PR_LATCH_BLOCK,
1789 pctx->blkcount = blockcnt;
1790 if (fix_problem(ctx, problem, pctx)) {
1791 blk = *block_nr = 0;
1792 ret_code = BLOCK_CHANGED;
1798 if (p->ino == EXT2_RESIZE_INO) {
1800 * The resize inode has already be sanity checked
1801 * during pass #0 (the superblock checks). All we
1802 * have to do is mark the double indirect block as
1803 * being in use; all of the other blocks are handled
1804 * by mark_table_blocks()).
1806 if (blockcnt == BLOCK_COUNT_DIND)
1807 mark_block_used(ctx, blk);
1809 mark_block_used(ctx, blk);
1812 p->last_block = blockcnt;
1814 if (p->is_dir && (blockcnt >= 0)) {
1815 pctx->errcode = ext2fs_add_dir_block(fs->dblist, p->ino,
1817 if (pctx->errcode) {
1819 pctx->num = blockcnt;
1820 fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
1821 /* Should never get here */
1822 ctx->flags |= E2F_FLAG_ABORT;
1829 static int process_bad_block(ext2_filsys fs,
1831 e2_blkcnt_t blockcnt,
1832 blk_t ref_block EXT2FS_ATTR((unused)),
1833 int ref_offset EXT2FS_ATTR((unused)),
1836 struct process_block_struct *p;
1837 blk_t blk = *block_nr;
1840 struct problem_context *pctx;
1844 * Note: This function processes blocks for the bad blocks
1845 * inode, which is never compressed. So we don't use HOLE_BLKADDR().
1851 p = (struct process_block_struct *) priv_data;
1855 pctx->ino = EXT2_BAD_INO;
1857 pctx->blkcount = blockcnt;
1859 if ((blk < fs->super->s_first_data_block) ||
1860 (blk >= fs->super->s_blocks_count)) {
1861 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
1863 return BLOCK_CHANGED;
1869 if (ext2fs_test_block_bitmap(p->fs_meta_blocks, blk)) {
1871 if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
1873 return BLOCK_CHANGED;
1875 } else if (ext2fs_test_block_bitmap(ctx->block_found_map,
1878 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
1881 return BLOCK_CHANGED;
1883 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1886 mark_block_used(ctx, blk);
1890 printf ("DEBUG: Marking %u as bad.\n", blk);
1892 ctx->fs_badblocks_count++;
1894 * If the block is not used, then mark it as used and return.
1895 * If it is already marked as found, this must mean that
1896 * there's an overlap between the filesystem table blocks
1897 * (bitmaps and inode table) and the bad block list.
1899 if (!ext2fs_test_block_bitmap(ctx->block_found_map, blk)) {
1900 ext2fs_mark_block_bitmap(ctx->block_found_map, blk);
1904 * Try to find the where the filesystem block was used...
1906 first_block = fs->super->s_first_data_block;
1908 for (i = 0; i < fs->group_desc_count; i++ ) {
1911 if (!ext2fs_bg_has_super(fs, i))
1913 if (blk == first_block) {
1915 if (fix_problem(ctx,
1916 PR_1_BAD_PRIMARY_SUPERBLOCK,
1919 return BLOCK_CHANGED;
1923 fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
1926 if ((blk > first_block) &&
1927 (blk <= first_block + fs->desc_blocks)) {
1929 pctx->blk = *block_nr;
1930 if (fix_problem(ctx,
1931 PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
1933 return BLOCK_CHANGED;
1937 fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
1941 if (blk == fs->group_desc[i].bg_block_bitmap) {
1942 if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
1943 ctx->invalid_block_bitmap_flag[i]++;
1944 ctx->invalid_bitmaps++;
1948 if (blk == fs->group_desc[i].bg_inode_bitmap) {
1949 if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
1950 ctx->invalid_inode_bitmap_flag[i]++;
1951 ctx->invalid_bitmaps++;
1955 if ((blk >= fs->group_desc[i].bg_inode_table) &&
1956 (blk < (fs->group_desc[i].bg_inode_table +
1957 fs->inode_blocks_per_group))) {
1959 * If there are bad blocks in the inode table,
1960 * the inode scan code will try to do
1961 * something reasonable automatically.
1965 first_block += fs->super->s_blocks_per_group;
1968 * If we've gotten to this point, then the only
1969 * possibility is that the bad block inode meta data
1970 * is using a bad block.
1972 if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
1973 (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
1974 (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
1976 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
1978 return BLOCK_CHANGED;
1980 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1987 /* Warn user that the block wasn't claimed */
1988 fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
1993 static void new_table_block(e2fsck_t ctx, blk_t first_block, int group,
1994 const char *name, int num, blk_t *new_block)
1996 ext2_filsys fs = ctx->fs;
1997 blk_t old_block = *new_block;
2001 struct problem_context pctx;
2003 clear_problem_context(&pctx);
2006 pctx.blk = old_block;
2009 last_block = ext2fs_group_last_block(fs, group);
2010 pctx.errcode = ext2fs_get_free_blocks(fs, first_block, last_block,
2011 num, ctx->block_found_map, new_block);
2014 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
2015 ext2fs_unmark_valid(fs);
2018 pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
2020 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
2021 ext2fs_unmark_valid(fs);
2024 ext2fs_mark_super_dirty(fs);
2025 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2026 pctx.blk2 = *new_block;
2027 fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
2028 PR_1_RELOC_TO), &pctx);
2030 for (i = 0; i < num; i++) {
2032 ext2fs_mark_block_bitmap(ctx->block_found_map, (*new_block)+i);
2034 pctx.errcode = io_channel_read_blk(fs->io,
2035 old_block + i, 1, buf);
2037 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
2039 memset(buf, 0, fs->blocksize);
2041 pctx.blk = (*new_block) + i;
2042 pctx.errcode = io_channel_write_blk(fs->io, pctx.blk,
2045 fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
2047 ext2fs_free_mem(&buf);
2051 * This routine gets called at the end of pass 1 if bad blocks are
2052 * detected in the superblock, group descriptors, inode_bitmaps, or
2053 * block bitmaps. At this point, all of the blocks have been mapped
2054 * out, so we can try to allocate new block(s) to replace the bad
2057 static void handle_fs_bad_blocks(e2fsck_t ctx)
2059 ext2_filsys fs = ctx->fs;
2063 for (i = 0; i < fs->group_desc_count; i++) {
2064 first_block = ext2fs_group_first_block(fs, i);
2066 if (ctx->invalid_block_bitmap_flag[i]) {
2067 new_table_block(ctx, first_block, i, _("block bitmap"),
2068 1, &fs->group_desc[i].bg_block_bitmap);
2070 if (ctx->invalid_inode_bitmap_flag[i]) {
2071 new_table_block(ctx, first_block, i, _("inode bitmap"),
2072 1, &fs->group_desc[i].bg_inode_bitmap);
2074 if (ctx->invalid_inode_table_flag[i]) {
2075 new_table_block(ctx, first_block, i, _("inode table"),
2076 fs->inode_blocks_per_group,
2077 &fs->group_desc[i].bg_inode_table);
2078 ctx->flags |= E2F_FLAG_RESTART;
2081 ctx->invalid_bitmaps = 0;
2085 * This routine marks all blocks which are used by the superblock,
2086 * group descriptors, inode bitmaps, and block bitmaps.
2088 static void mark_table_blocks(e2fsck_t ctx)
2090 ext2_filsys fs = ctx->fs;
2094 struct problem_context pctx;
2096 clear_problem_context(&pctx);
2098 for (i = 0; i < fs->group_desc_count; i++) {
2101 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
2104 * Mark the blocks used for the inode table
2106 if (fs->group_desc[i].bg_inode_table) {
2107 for (j = 0, b = fs->group_desc[i].bg_inode_table;
2108 j < fs->inode_blocks_per_group;
2110 if (ext2fs_test_block_bitmap(ctx->block_found_map,
2113 if (fix_problem(ctx,
2114 PR_1_ITABLE_CONFLICT, &pctx)) {
2115 ctx->invalid_inode_table_flag[i]++;
2116 ctx->invalid_bitmaps++;
2119 ext2fs_mark_block_bitmap(ctx->block_found_map,
2126 * Mark block used for the block bitmap
2128 if (fs->group_desc[i].bg_block_bitmap) {
2129 if (ext2fs_test_block_bitmap(ctx->block_found_map,
2130 fs->group_desc[i].bg_block_bitmap)) {
2131 pctx.blk = fs->group_desc[i].bg_block_bitmap;
2132 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
2133 ctx->invalid_block_bitmap_flag[i]++;
2134 ctx->invalid_bitmaps++;
2137 ext2fs_mark_block_bitmap(ctx->block_found_map,
2138 fs->group_desc[i].bg_block_bitmap);
2143 * Mark block used for the inode bitmap
2145 if (fs->group_desc[i].bg_inode_bitmap) {
2146 if (ext2fs_test_block_bitmap(ctx->block_found_map,
2147 fs->group_desc[i].bg_inode_bitmap)) {
2148 pctx.blk = fs->group_desc[i].bg_inode_bitmap;
2149 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
2150 ctx->invalid_inode_bitmap_flag[i]++;
2151 ctx->invalid_bitmaps++;
2154 ext2fs_mark_block_bitmap(ctx->block_found_map,
2155 fs->group_desc[i].bg_inode_bitmap);
2162 * Thes subroutines short circuits ext2fs_get_blocks and
2163 * ext2fs_check_directory; we use them since we already have the inode
2164 * structure, so there's no point in letting the ext2fs library read
2167 static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
2170 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
2173 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
2174 return EXT2_ET_CALLBACK_NOTHANDLED;
2176 for (i=0; i < EXT2_N_BLOCKS; i++)
2177 blocks[i] = ctx->stashed_inode->i_block[i];
2181 static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
2182 struct ext2_inode *inode)
2184 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
2186 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
2187 return EXT2_ET_CALLBACK_NOTHANDLED;
2188 *inode = *ctx->stashed_inode;
2192 static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
2193 struct ext2_inode *inode)
2195 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
2197 if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
2198 (inode != ctx->stashed_inode))
2199 *ctx->stashed_inode = *inode;
2200 return EXT2_ET_CALLBACK_NOTHANDLED;
2203 static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
2205 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
2207 if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
2208 return EXT2_ET_CALLBACK_NOTHANDLED;
2210 if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
2211 return EXT2_ET_NO_DIRECTORY;
2215 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int bool)
2217 ext2_filsys fs = ctx->fs;
2220 fs->get_blocks = pass1_get_blocks;
2221 fs->check_directory = pass1_check_directory;
2222 fs->read_inode = pass1_read_inode;
2223 fs->write_inode = pass1_write_inode;
2224 ctx->stashed_ino = 0;
2227 fs->check_directory = 0;
2229 fs->write_inode = 0;