2 * pass3.c -- pass #3 of e2fsck: Check for directory connectivity
4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999 Theodore Ts'o.
7 * This file may be redistributed under the terms of the GNU Public
11 * Pass #3 assures that all directories are connected to the
12 * filesystem tree, using the following algorithm:
14 * First, the root directory is checked to make sure it exists; if
15 * not, e2fsck will offer to create a new one. It is then marked as
18 * Then, pass3 interates over all directory inodes; for each directory
19 * it attempts to trace up the filesystem tree, using dirinfo.parent
20 * until it reaches a directory which has been marked "done". If it
21 * can not do so, then the directory must be disconnected, and e2fsck
22 * will offer to reconnect it to /lost+found. While it is chasing
23 * parent pointers up the filesystem tree, if pass3 sees a directory
24 * twice, then it has detected a filesystem loop, and it will again
25 * offer to reconnect the directory to /lost+found in to break the
28 * Pass 3 also contains the subroutine, e2fsck_reconnect_file() to
29 * reconnect inodes to /lost+found; this subroutine is also used by
30 * pass 4. e2fsck_reconnect_file() calls get_lost_and_found(), which
31 * is responsible for creating /lost+found if it does not exist.
33 * Pass 3 frees the following data structures:
34 * - The dirinfo directory information cache.
45 static void check_root(e2fsck_t ctx);
46 static int check_directory(e2fsck_t ctx, ext2_ino_t ino,
47 struct problem_context *pctx);
48 static void fix_dotdot(e2fsck_t ctx, ext2_ino_t ino, ext2_ino_t parent);
50 static ext2fs_inode_bitmap inode_loop_detect = 0;
51 static ext2fs_inode_bitmap inode_done_map = 0;
53 void e2fsck_pass3(e2fsck_t ctx)
55 ext2_filsys fs = ctx->fs;
56 struct dir_info_iter *iter = NULL;
58 struct resource_track rtrack;
60 struct problem_context pctx;
62 unsigned long maxdirs, count;
64 init_resource_track(&rtrack, ctx->fs->io);
65 clear_problem_context(&pctx);
68 mtrace_print("Pass 3");
71 if (!(ctx->options & E2F_OPT_PREEN))
72 fix_problem(ctx, PR_3_PASS_HEADER, &pctx);
75 * Allocate some bitmaps to do loop detection.
77 pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("inode done bitmap"),
78 EXT2FS_BMAP64_AUTODIR,
79 "inode_done_map", &inode_done_map);
82 fix_problem(ctx, PR_3_ALLOCATE_IBITMAP_ERROR, &pctx);
83 ctx->flags |= E2F_FLAG_ABORT;
86 print_resource_track(ctx, _("Peak memory"), &ctx->global_rtrack, NULL);
89 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
92 ext2fs_mark_inode_bitmap2(inode_done_map, EXT2_ROOT_INO);
94 maxdirs = e2fsck_get_num_dirinfo(ctx);
98 if ((ctx->progress)(ctx, 3, 0, maxdirs))
101 iter = e2fsck_dir_info_iter_begin(ctx);
102 while ((dir = e2fsck_dir_info_iter(ctx, iter)) != 0) {
103 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
105 if (ctx->progress && (ctx->progress)(ctx, 3, count++, maxdirs))
107 if (ext2fs_test_inode_bitmap2(ctx->inode_dir_map, dir->ino))
108 if (check_directory(ctx, dir->ino, &pctx))
113 * Force the creation of /lost+found if not present
115 if ((ctx->options & E2F_OPT_READONLY) == 0)
116 e2fsck_get_lost_and_found(ctx, 1);
119 * If there are any directories that need to be indexed or
120 * optimized, do it here.
122 e2fsck_rehash_directories(ctx);
126 e2fsck_dir_info_iter_end(ctx, iter);
127 e2fsck_free_dir_info(ctx);
128 if (inode_loop_detect) {
129 ext2fs_free_inode_bitmap(inode_loop_detect);
130 inode_loop_detect = 0;
132 if (inode_done_map) {
133 ext2fs_free_inode_bitmap(inode_done_map);
137 if (ctx->lnf_repair_block) {
138 ext2fs_unmark_block_bitmap2(ctx->block_found_map,
139 ctx->lnf_repair_block);
140 ctx->lnf_repair_block = 0;
142 if (ctx->root_repair_block) {
143 ext2fs_unmark_block_bitmap2(ctx->block_found_map,
144 ctx->root_repair_block);
145 ctx->root_repair_block = 0;
148 print_resource_track(ctx, _("Pass 3"), &rtrack, ctx->fs->io);
152 * This makes sure the root inode is present; if not, we ask if the
153 * user wants us to create it. Not creating it is a fatal error.
155 static void check_root(e2fsck_t ctx)
157 ext2_filsys fs = ctx->fs;
159 struct ext2_inode inode;
161 struct problem_context pctx;
163 clear_problem_context(&pctx);
165 if (ext2fs_test_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO)) {
167 * If the root inode is not a directory, die here. The
168 * user must have answered 'no' in pass1 when we
169 * offered to clear it.
171 if (!(ext2fs_test_inode_bitmap2(ctx->inode_dir_map,
173 fix_problem(ctx, PR_3_ROOT_NOT_DIR_ABORT, &pctx);
174 ctx->flags |= E2F_FLAG_ABORT;
179 if (!fix_problem(ctx, PR_3_NO_ROOT_INODE, &pctx)) {
180 fix_problem(ctx, PR_3_NO_ROOT_INODE_ABORT, &pctx);
181 ctx->flags |= E2F_FLAG_ABORT;
185 e2fsck_read_bitmaps(ctx);
188 * First, find a free block
190 if (ctx->root_repair_block) {
191 blk = ctx->root_repair_block;
192 ctx->root_repair_block = 0;
195 pctx.errcode = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
197 pctx.str = "ext2fs_new_block";
198 fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
199 ctx->flags |= E2F_FLAG_ABORT;
202 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
204 ext2fs_mark_block_bitmap2(fs->block_map, blk);
205 ext2fs_mark_bb_dirty(fs);
208 * Set up the inode structure
210 memset(&inode, 0, sizeof(inode));
211 inode.i_mode = 040755;
212 inode.i_size = fs->blocksize;
213 inode.i_atime = inode.i_ctime = inode.i_mtime = ctx->now;
214 inode.i_links_count = 2;
215 ext2fs_iblk_set(fs, &inode, 1);
216 inode.i_block[0] = blk;
219 * Write out the inode.
221 pctx.errcode = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
223 pctx.str = "ext2fs_write_inode";
224 fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
225 ctx->flags |= E2F_FLAG_ABORT;
230 * Now let's create the actual data block for the inode.
231 * Due to metadata_csum, we must write the dir blocks AFTER
232 * the inode has been written to disk!
234 pctx.errcode = ext2fs_new_dir_block(fs, EXT2_ROOT_INO, EXT2_ROOT_INO,
237 pctx.str = "ext2fs_new_dir_block";
238 fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
239 ctx->flags |= E2F_FLAG_ABORT;
243 pctx.errcode = ext2fs_write_dir_block4(fs, blk, block, 0,
245 ext2fs_free_mem(&block);
247 pctx.str = "ext2fs_write_dir_block4";
248 fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
249 ctx->flags |= E2F_FLAG_ABORT;
254 * Miscellaneous bookkeeping...
256 e2fsck_add_dir_info(ctx, EXT2_ROOT_INO, EXT2_ROOT_INO);
257 ext2fs_icount_store(ctx->inode_count, EXT2_ROOT_INO, 2);
258 ext2fs_icount_store(ctx->inode_link_info, EXT2_ROOT_INO, 2);
260 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO);
261 ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, EXT2_ROOT_INO);
262 ext2fs_mark_inode_bitmap2(fs->inode_map, EXT2_ROOT_INO);
263 ext2fs_mark_ib_dirty(fs);
267 * This subroutine is responsible for making sure that a particular
268 * directory is connected to the root; if it isn't we trace it up as
269 * far as we can go, and then offer to connect the resulting parent to
270 * the lost+found. We have to do loop detection; if we ever discover
271 * a loop, we treat that as a disconnected directory and offer to
272 * reparent it to lost+found.
274 * However, loop detection is expensive, because for very large
275 * filesystems, the inode_loop_detect bitmap is huge, and clearing it
276 * is non-trivial. Loops in filesystems are also a rare error case,
277 * and we shouldn't optimize for error cases. So we try two passes of
278 * the algorithm. The first time, we ignore loop detection and merely
279 * increment a counter; if the counter exceeds some extreme threshold,
280 * then we try again with the loop detection bitmap enabled.
282 static int check_directory(e2fsck_t ctx, ext2_ino_t dir,
283 struct problem_context *pctx)
285 ext2_filsys fs = ctx->fs;
286 ext2_ino_t ino = dir, parent;
287 int loop_pass = 0, parent_count = 0;
291 * Mark this inode as being "done"; by the time we
292 * return from this function, the inode we either be
293 * verified as being connected to the directory tree,
294 * or we will have offered to reconnect this to
297 * If it was marked done already, then we've reached a
298 * parent we've already checked.
300 if (ext2fs_mark_inode_bitmap2(inode_done_map, ino))
303 if (e2fsck_dir_info_get_parent(ctx, ino, &parent)) {
304 fix_problem(ctx, PR_3_NO_DIRINFO, pctx);
309 * If this directory doesn't have a parent, or we've
310 * seen the parent once already, then offer to
311 * reparent it to lost+found
315 (ext2fs_test_inode_bitmap2(inode_loop_detect,
318 if (fix_problem(ctx, PR_3_UNCONNECTED_DIR, pctx)) {
319 if (e2fsck_reconnect_file(ctx, pctx->ino))
320 ext2fs_unmark_valid(fs);
322 fix_dotdot(ctx, pctx->ino,
323 ctx->lost_and_found);
324 parent = ctx->lost_and_found;
331 ext2fs_mark_inode_bitmap2(inode_loop_detect, ino);
332 } else if (parent_count++ > 2048) {
334 * If we've run into a path depth that's
335 * greater than 2048, try again with the inode
336 * loop bitmap turned on and start from the
340 if (inode_loop_detect)
341 ext2fs_clear_inode_bitmap(inode_loop_detect);
343 pctx->errcode = e2fsck_allocate_inode_bitmap(fs, _("inode loop detection bitmap"), EXT2FS_BMAP64_AUTODIR, "inode_loop_detect", &inode_loop_detect);
347 PR_3_ALLOCATE_IBITMAP_ERROR, pctx);
348 ctx->flags |= E2F_FLAG_ABORT;
357 * Make sure that .. and the parent directory are the same;
358 * offer to fix it if not.
361 if (e2fsck_dir_info_get_dotdot(ctx, dir, &pctx->ino2) ||
362 e2fsck_dir_info_get_parent(ctx, dir, &pctx->dir)) {
363 fix_problem(ctx, PR_3_NO_DIRINFO, pctx);
366 if (pctx->ino2 != pctx->dir) {
367 if (fix_problem(ctx, PR_3_BAD_DOT_DOT, pctx))
368 fix_dotdot(ctx, dir, pctx->dir);
374 * This routine gets the lost_and_found inode, making it a directory
377 ext2_ino_t e2fsck_get_lost_and_found(e2fsck_t ctx, int fix)
379 ext2_filsys fs = ctx->fs;
383 struct ext2_inode inode;
385 static const char name[] = "lost+found";
386 struct problem_context pctx;
388 if (ctx->lost_and_found)
389 return ctx->lost_and_found;
391 clear_problem_context(&pctx);
393 retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name,
394 sizeof(name)-1, 0, &ino);
398 /* Lost+found shouldn't have inline data */
399 retval = ext2fs_read_inode(fs, ino, &inode);
403 if (fix && (inode.i_flags & EXT4_INLINE_DATA_FL)) {
404 if (!fix_problem(ctx, PR_3_LPF_INLINE_DATA, &pctx))
409 if (ext2fs_check_directory(fs, ino) == 0) {
410 ctx->lost_and_found = ino;
414 /* Lost+found isn't a directory! */
418 if (!fix_problem(ctx, PR_3_LPF_NOTDIR, &pctx))
422 /* OK, unlink the old /lost+found file. */
423 pctx.errcode = ext2fs_unlink(fs, EXT2_ROOT_INO, name, ino, 0);
425 pctx.str = "ext2fs_unlink";
426 fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
429 (void) e2fsck_dir_info_set_parent(ctx, ino, 0);
430 e2fsck_adjust_inode_count(ctx, ino, -1);
431 } else if (retval != EXT2_ET_FILE_NOT_FOUND) {
432 pctx.errcode = retval;
433 fix_problem(ctx, PR_3_ERR_FIND_LPF, &pctx);
435 if (!fix_problem(ctx, PR_3_NO_LF_DIR, 0))
439 * Read the inode and block bitmaps in; we'll be messing with
442 e2fsck_read_bitmaps(ctx);
445 * First, find a free block
447 if (ctx->lnf_repair_block) {
448 blk = ctx->lnf_repair_block;
449 ctx->lnf_repair_block = 0;
452 retval = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
453 if (retval == EXT2_ET_BLOCK_ALLOC_FAIL &&
454 fix_problem(ctx, PR_3_LPF_NO_SPACE, &pctx)) {
455 printf("Delete some files and re-run e2fsck.\n\n");
456 ctx->lost_and_found = EXT2_ROOT_INO;
460 pctx.errcode = retval;
461 fix_problem(ctx, PR_3_ERR_LPF_NEW_BLOCK, &pctx);
464 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
466 ext2fs_block_alloc_stats2(fs, blk, +1);
469 * Next find a free inode.
471 retval = ext2fs_new_inode(fs, EXT2_ROOT_INO, 040700,
472 ctx->inode_used_map, &ino);
473 if (retval == EXT2_ET_INODE_ALLOC_FAIL &&
474 fix_problem(ctx, PR_3_LPF_NO_SPACE, &pctx)) {
475 printf("Delete some files and re-run e2fsck.\n\n");
476 ctx->lost_and_found = EXT2_ROOT_INO;
480 pctx.errcode = retval;
481 fix_problem(ctx, PR_3_ERR_LPF_NEW_INODE, &pctx);
484 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
485 ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
486 ext2fs_inode_alloc_stats2(fs, ino, +1, 1);
489 * Set up the inode structure
491 memset(&inode, 0, sizeof(inode));
492 inode.i_mode = 040700;
493 inode.i_size = fs->blocksize;
494 inode.i_atime = inode.i_ctime = inode.i_mtime = ctx->now;
495 inode.i_links_count = 2;
496 ext2fs_iblk_set(fs, &inode, 1);
497 inode.i_block[0] = blk;
500 * Next, write out the inode.
502 pctx.errcode = ext2fs_write_new_inode(fs, ino, &inode);
504 pctx.str = "ext2fs_write_inode";
505 fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
510 * Now let's create the actual data block for the inode.
511 * Due to metadata_csum, the directory block MUST be written
512 * after the inode is written to disk!
514 retval = ext2fs_new_dir_block(fs, ino, EXT2_ROOT_INO, &block);
516 pctx.errcode = retval;
517 fix_problem(ctx, PR_3_ERR_LPF_NEW_DIR_BLOCK, &pctx);
521 retval = ext2fs_write_dir_block4(fs, blk, block, 0, ino);
522 ext2fs_free_mem(&block);
524 pctx.errcode = retval;
525 fix_problem(ctx, PR_3_ERR_LPF_WRITE_BLOCK, &pctx);
530 * Finally, create the directory link
532 pctx.errcode = ext2fs_link(fs, EXT2_ROOT_INO, name, ino, EXT2_FT_DIR);
534 pctx.str = "ext2fs_link";
535 fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
540 * Miscellaneous bookkeeping that needs to be kept straight.
542 e2fsck_add_dir_info(ctx, ino, EXT2_ROOT_INO);
543 e2fsck_adjust_inode_count(ctx, EXT2_ROOT_INO, 1);
544 ext2fs_icount_store(ctx->inode_count, ino, 2);
545 ext2fs_icount_store(ctx->inode_link_info, ino, 2);
546 ctx->lost_and_found = ino;
547 quota_data_add(ctx->qctx, &inode, ino, fs->blocksize);
548 quota_data_inodes(ctx->qctx, &inode, ino, +1);
550 printf("/lost+found created; inode #%lu\n", ino);
556 * This routine will connect a file to lost+found
558 int e2fsck_reconnect_file(e2fsck_t ctx, ext2_ino_t ino)
560 ext2_filsys fs = ctx->fs;
563 struct problem_context pctx;
564 struct ext2_inode inode;
567 clear_problem_context(&pctx);
570 if (!ctx->bad_lost_and_found && !ctx->lost_and_found) {
571 if (e2fsck_get_lost_and_found(ctx, 1) == 0)
572 ctx->bad_lost_and_found++;
574 if (ctx->bad_lost_and_found) {
575 fix_problem(ctx, PR_3_NO_LPF, &pctx);
579 sprintf(name, "#%u", ino);
580 if (ext2fs_read_inode(fs, ino, &inode) == 0)
581 file_type = ext2_file_type(inode.i_mode);
582 retval = ext2fs_link(fs, ctx->lost_and_found, name, ino, file_type);
583 if (retval == EXT2_ET_DIR_NO_SPACE) {
584 if (!fix_problem(ctx, PR_3_EXPAND_LF_DIR, &pctx))
586 retval = e2fsck_expand_directory(ctx, ctx->lost_and_found,
589 pctx.errcode = retval;
590 fix_problem(ctx, PR_3_CANT_EXPAND_LPF, &pctx);
593 retval = ext2fs_link(fs, ctx->lost_and_found, name,
597 pctx.errcode = retval;
598 fix_problem(ctx, PR_3_CANT_RECONNECT, &pctx);
601 e2fsck_adjust_inode_count(ctx, ino, 1);
607 * Utility routine to adjust the inode counts on an inode.
609 errcode_t e2fsck_adjust_inode_count(e2fsck_t ctx, ext2_ino_t ino, int adj)
611 ext2_filsys fs = ctx->fs;
613 struct ext2_inode inode;
618 retval = ext2fs_read_inode(fs, ino, &inode);
623 printf("Adjusting link count for inode %lu by %d (from %d)\n", ino, adj,
624 inode.i_links_count);
628 ext2fs_icount_increment(ctx->inode_count, ino, 0);
629 if (inode.i_links_count == (__u16) ~0)
631 ext2fs_icount_increment(ctx->inode_link_info, ino, 0);
632 inode.i_links_count++;
633 } else if (adj == -1) {
634 ext2fs_icount_decrement(ctx->inode_count, ino, 0);
635 if (inode.i_links_count == 0)
637 ext2fs_icount_decrement(ctx->inode_link_info, ino, 0);
638 inode.i_links_count--;
641 retval = ext2fs_write_inode(fs, ino, &inode);
649 * Fix parent --- this routine fixes up the parent of a directory.
651 struct fix_dotdot_struct {
658 static int fix_dotdot_proc(struct ext2_dir_entry *dirent,
659 int offset EXT2FS_ATTR((unused)),
660 int blocksize EXT2FS_ATTR((unused)),
661 char *buf EXT2FS_ATTR((unused)),
664 struct fix_dotdot_struct *fp = (struct fix_dotdot_struct *) priv_data;
666 struct problem_context pctx;
668 if (ext2fs_dirent_name_len(dirent) != 2)
670 if (strncmp(dirent->name, "..", 2))
673 clear_problem_context(&pctx);
675 retval = e2fsck_adjust_inode_count(fp->ctx, dirent->inode, -1);
677 pctx.errcode = retval;
678 fix_problem(fp->ctx, PR_3_ADJUST_INODE, &pctx);
680 retval = e2fsck_adjust_inode_count(fp->ctx, fp->parent, 1);
682 pctx.errcode = retval;
683 fix_problem(fp->ctx, PR_3_ADJUST_INODE, &pctx);
685 dirent->inode = fp->parent;
686 if (fp->ctx->fs->super->s_feature_incompat &
687 EXT2_FEATURE_INCOMPAT_FILETYPE)
688 ext2fs_dirent_set_file_type(dirent, EXT2_FT_DIR);
690 ext2fs_dirent_set_file_type(dirent, EXT2_FT_UNKNOWN);
693 return DIRENT_ABORT | DIRENT_CHANGED;
696 static void fix_dotdot(e2fsck_t ctx, ext2_ino_t ino, ext2_ino_t parent)
698 ext2_filsys fs = ctx->fs;
700 struct fix_dotdot_struct fp;
701 struct problem_context pctx;
702 int flags, will_rehash;
710 printf("Fixing '..' of inode %lu to be %lu...\n", ino, parent);
713 clear_problem_context(&pctx);
715 will_rehash = e2fsck_dir_will_be_rehashed(ctx, ino);
717 flags = ctx->fs->flags;
718 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
720 retval = ext2fs_dir_iterate(fs, ino, DIRENT_FLAG_INCLUDE_EMPTY,
721 0, fix_dotdot_proc, &fp);
723 ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
724 (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
725 if (retval || !fp.done) {
726 pctx.errcode = retval;
727 fix_problem(ctx, retval ? PR_3_FIX_PARENT_ERR :
728 PR_3_FIX_PARENT_NOFIND, &pctx);
729 ext2fs_unmark_valid(fs);
731 (void) e2fsck_dir_info_set_dotdot(ctx, ino, parent);
732 if (e2fsck_dir_info_set_parent(ctx, ino, ctx->lost_and_found))
733 fix_problem(ctx, PR_3_NO_DIRINFO, &pctx);
739 * These routines are responsible for expanding a /lost+found if it is
743 struct expand_dir_struct {
745 e2_blkcnt_t guaranteed_size;
753 static int expand_dir_proc(ext2_filsys fs,
755 e2_blkcnt_t blockcnt,
756 blk64_t ref_block EXT2FS_ATTR((unused)),
757 int ref_offset EXT2FS_ATTR((unused)),
760 struct expand_dir_struct *es = (struct expand_dir_struct *) priv_data;
762 static blk64_t last_blk = 0;
769 if (es->guaranteed_size && blockcnt >= es->guaranteed_size)
773 es->last_block = blockcnt;
780 (EXT2FS_B2C(fs, last_blk) == EXT2FS_B2C(fs, last_blk + 1)))
781 new_blk = last_blk + 1;
783 last_blk &= ~EXT2FS_CLUSTER_MASK(fs);
784 retval = ext2fs_new_block2(fs, last_blk, ctx->block_found_map,
791 ext2fs_block_alloc_stats2(fs, new_blk, +1);
796 retval = ext2fs_new_dir_block(fs, 0, 0, &block);
802 retval = ext2fs_write_dir_block4(fs, new_blk, block, 0,
805 retval = ext2fs_get_mem(fs->blocksize, &block);
810 memset(block, 0, fs->blocksize);
811 retval = io_channel_write_blk64(fs->io, new_blk, 1, block);
817 ext2fs_free_mem(&block);
819 ext2fs_mark_block_bitmap2(ctx->block_found_map, new_blk);
822 return (BLOCK_CHANGED | BLOCK_ABORT);
824 return BLOCK_CHANGED;
827 errcode_t e2fsck_expand_directory(e2fsck_t ctx, ext2_ino_t dir,
828 int num, int guaranteed_size)
830 ext2_filsys fs = ctx->fs;
832 struct expand_dir_struct es;
833 struct ext2_inode inode;
834 blk64_t sz, before, after;
836 if (!(fs->flags & EXT2_FLAG_RW))
837 return EXT2_ET_RO_FILSYS;
840 * Read the inode and block bitmaps in; we'll be messing with
843 e2fsck_read_bitmaps(ctx);
845 retval = ext2fs_check_directory(fs, dir);
850 es.guaranteed_size = guaranteed_size;
857 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_APPEND,
858 0, expand_dir_proc, &es);
864 * Update the size and block count fields in the inode.
866 retval = ext2fs_read_inode(fs, dir, &inode);
870 sz = (es.last_block + 1) * fs->blocksize;
871 retval = ext2fs_inode_size_set(fs, &inode, sz);
874 ext2fs_iblk_add_blocks(fs, &inode, es.newblocks);
875 quota_data_add(ctx->qctx, &inode, dir, es.newblocks * fs->blocksize);
877 e2fsck_write_inode(ctx, dir, &inode, "expand_directory");