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 iterates 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 order 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 ||
104 ctx->flags & E2F_FLAG_RESTART)
106 if (ctx->progress && (ctx->progress)(ctx, 3, count++, maxdirs))
108 if (ext2fs_test_inode_bitmap2(ctx->inode_dir_map, dir->ino))
109 if (check_directory(ctx, dir->ino, &pctx))
114 * Force the creation of /lost+found if not present
116 if ((ctx->options & E2F_OPT_READONLY) == 0)
117 e2fsck_get_lost_and_found(ctx, 1);
120 * If there are any directories that need to be indexed or
121 * optimized, do it here.
123 e2fsck_rehash_directories(ctx);
127 e2fsck_dir_info_iter_end(ctx, iter);
128 e2fsck_free_dir_info(ctx);
129 if (inode_loop_detect) {
130 ext2fs_free_inode_bitmap(inode_loop_detect);
131 inode_loop_detect = 0;
133 if (inode_done_map) {
134 ext2fs_free_inode_bitmap(inode_done_map);
138 if (ctx->lnf_repair_block) {
139 ext2fs_unmark_block_bitmap2(ctx->block_found_map,
140 ctx->lnf_repair_block);
141 ctx->lnf_repair_block = 0;
143 if (ctx->root_repair_block) {
144 ext2fs_unmark_block_bitmap2(ctx->block_found_map,
145 ctx->root_repair_block);
146 ctx->root_repair_block = 0;
149 print_resource_track(ctx, _("Pass 3"), &rtrack, ctx->fs->io);
153 * This makes sure the root inode is present; if not, we ask if the
154 * user wants us to create it. Not creating it is a fatal error.
156 static void check_root(e2fsck_t ctx)
158 ext2_filsys fs = ctx->fs;
160 struct ext2_inode_large inode;
161 struct ext2_inode *iptr = (struct ext2_inode *) &inode;
163 struct problem_context pctx;
165 clear_problem_context(&pctx);
167 if (ext2fs_test_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO)) {
169 * If the root inode is not a directory, die here. The
170 * user must have answered 'no' in pass1 when we
171 * offered to clear it.
173 if (!(ext2fs_test_inode_bitmap2(ctx->inode_dir_map,
175 fix_problem(ctx, PR_3_ROOT_NOT_DIR_ABORT, &pctx);
176 ctx->flags |= E2F_FLAG_ABORT;
181 if (!fix_problem(ctx, PR_3_NO_ROOT_INODE, &pctx)) {
182 fix_problem(ctx, PR_3_NO_ROOT_INODE_ABORT, &pctx);
183 ctx->flags |= E2F_FLAG_ABORT;
187 e2fsck_read_bitmaps(ctx);
190 * First, find a free block
192 if (ctx->root_repair_block) {
193 blk = ctx->root_repair_block;
194 ctx->root_repair_block = 0;
197 pctx.errcode = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
199 pctx.str = "ext2fs_new_block";
200 fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
201 ctx->flags |= E2F_FLAG_ABORT;
204 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
206 ext2fs_mark_block_bitmap2(fs->block_map, blk);
207 ext2fs_mark_bb_dirty(fs);
210 * Set up the inode structure
212 memset(&inode, 0, sizeof(inode));
213 inode.i_mode = 040755;
214 inode.i_size = fs->blocksize;
215 inode.i_atime = inode.i_ctime = inode.i_mtime = ctx->now;
216 inode.i_links_count = 2;
217 ext2fs_iblk_set(fs, iptr, 1);
218 inode.i_block[0] = blk;
219 inode.i_extra_isize = sizeof(struct ext2_inode_large) -
220 EXT2_GOOD_OLD_INODE_SIZE;
223 * Write out the inode.
225 pctx.errcode = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, iptr);
227 pctx.str = "ext2fs_write_inode";
228 fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
229 ctx->flags |= E2F_FLAG_ABORT;
234 * Now let's create the actual data block for the inode.
235 * Due to metadata_csum, we must write the dir blocks AFTER
236 * the inode has been written to disk!
238 pctx.errcode = ext2fs_new_dir_block(fs, EXT2_ROOT_INO, EXT2_ROOT_INO,
241 pctx.str = "ext2fs_new_dir_block";
242 fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
243 ctx->flags |= E2F_FLAG_ABORT;
247 pctx.errcode = ext2fs_write_dir_block4(fs, blk, block, 0,
249 ext2fs_free_mem(&block);
251 pctx.str = "ext2fs_write_dir_block4";
252 fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
253 ctx->flags |= E2F_FLAG_ABORT;
258 * Miscellaneous bookkeeping...
260 e2fsck_add_dir_info(ctx, EXT2_ROOT_INO, EXT2_ROOT_INO);
261 ext2fs_icount_store(ctx->inode_count, EXT2_ROOT_INO, 2);
262 ext2fs_icount_store(ctx->inode_link_info, EXT2_ROOT_INO, 2);
264 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO);
265 ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, EXT2_ROOT_INO);
266 ext2fs_mark_inode_bitmap2(fs->inode_map, EXT2_ROOT_INO);
267 ext2fs_mark_ib_dirty(fs);
268 quota_data_add(ctx->qctx, &inode, EXT2_ROOT_INO,
269 EXT2_CLUSTER_SIZE(fs->super));
270 quota_data_inodes(ctx->qctx, &inode, EXT2_ROOT_INO, +1);
274 * This subroutine is responsible for making sure that a particular
275 * directory is connected to the root; if it isn't we trace it up as
276 * far as we can go, and then offer to connect the resulting parent to
277 * the lost+found. We have to do loop detection; if we ever discover
278 * a loop, we treat that as a disconnected directory and offer to
279 * reparent it to lost+found.
281 * However, loop detection is expensive, because for very large
282 * filesystems, the inode_loop_detect bitmap is huge, and clearing it
283 * is non-trivial. Loops in filesystems are also a rare error case,
284 * and we shouldn't optimize for error cases. So we try two passes of
285 * the algorithm. The first time, we ignore loop detection and merely
286 * increment a counter; if the counter exceeds some extreme threshold,
287 * then we try again with the loop detection bitmap enabled.
289 static int check_directory(e2fsck_t ctx, ext2_ino_t dir,
290 struct problem_context *pctx)
292 ext2_filsys fs = ctx->fs;
293 ext2_ino_t ino = dir, parent;
294 int loop_pass = 0, parent_count = 0;
298 * Mark this inode as being "done"; by the time we
299 * return from this function, the inode we either be
300 * verified as being connected to the directory tree,
301 * or we will have offered to reconnect this to
304 * If it was marked done already, then we've reached a
305 * parent we've already checked.
307 if (ext2fs_mark_inode_bitmap2(inode_done_map, ino))
310 if (e2fsck_dir_info_get_parent(ctx, ino, &parent)) {
311 fix_problem(ctx, PR_3_NO_DIRINFO, pctx);
316 * If this directory doesn't have a parent, or we've
317 * seen the parent once already, then offer to
318 * reparent it to lost+found
322 ext2fs_test_inode_bitmap2(inode_loop_detect, parent))) {
327 (void) ext2fs_lookup(fs, ino, "..", 2, NULL,
329 if (fix_problem(ctx, !parent ? PR_3_UNCONNECTED_DIR :
330 PR_3_LOOPED_DIR, pctx)) {
331 if (e2fsck_reconnect_file(ctx, pctx->ino)) {
332 ext2fs_unmark_valid(fs);
334 fix_dotdot(ctx, pctx->ino,
335 ctx->lost_and_found);
336 parent = ctx->lost_and_found;
343 ext2fs_mark_inode_bitmap2(inode_loop_detect, ino);
344 } else if (parent_count++ > 2048) {
346 * If we've run into a path depth that's
347 * greater than 2048, try again with the inode
348 * loop bitmap turned on and start from the
352 if (inode_loop_detect)
353 ext2fs_clear_inode_bitmap(inode_loop_detect);
355 pctx->errcode = e2fsck_allocate_inode_bitmap(fs, _("inode loop detection bitmap"), EXT2FS_BMAP64_AUTODIR, "inode_loop_detect", &inode_loop_detect);
359 PR_3_ALLOCATE_IBITMAP_ERROR, pctx);
360 ctx->flags |= E2F_FLAG_ABORT;
369 * Make sure that .. and the parent directory are the same;
370 * offer to fix it if not.
373 if (e2fsck_dir_info_get_dotdot(ctx, dir, &pctx->ino2) ||
374 e2fsck_dir_info_get_parent(ctx, dir, &pctx->dir)) {
375 fix_problem(ctx, PR_3_NO_DIRINFO, pctx);
378 if (pctx->ino2 != pctx->dir) {
379 if (fix_problem(ctx, PR_3_BAD_DOT_DOT, pctx))
380 fix_dotdot(ctx, dir, pctx->dir);
386 * This routine gets the lost_and_found inode, making it a directory
389 ext2_ino_t e2fsck_get_lost_and_found(e2fsck_t ctx, int fix)
391 ext2_filsys fs = ctx->fs;
395 struct ext2_inode_large inode;
397 static const char name[] = "lost+found";
398 struct problem_context pctx;
399 int will_rehash, flags;
401 if (ctx->lost_and_found)
402 return ctx->lost_and_found;
404 clear_problem_context(&pctx);
406 will_rehash = e2fsck_dir_will_be_rehashed(ctx, EXT2_ROOT_INO);
408 flags = ctx->fs->flags;
409 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
411 retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name,
412 sizeof(name)-1, 0, &ino);
414 ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
415 (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
419 /* Lost+found shouldn't have inline data */
420 retval = ext2fs_read_inode_full(fs, ino, EXT2_INODE(&inode),
425 if (fix && (inode.i_flags & EXT4_INLINE_DATA_FL)) {
426 if (!fix_problem(ctx, PR_3_LPF_INLINE_DATA, &pctx))
431 if (fix && (inode.i_flags & EXT4_ENCRYPT_FL)) {
432 if (!fix_problem(ctx, PR_3_LPF_ENCRYPTED, &pctx))
437 if (ext2fs_check_directory(fs, ino) == 0) {
438 ctx->lost_and_found = ino;
442 /* Lost+found isn't a directory! */
446 if (!fix_problem(ctx, PR_3_LPF_NOTDIR, &pctx))
450 /* OK, unlink the old /lost+found file. */
451 pctx.errcode = ext2fs_unlink(fs, EXT2_ROOT_INO, name, ino, 0);
453 pctx.str = "ext2fs_unlink";
454 fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
457 (void) e2fsck_dir_info_set_parent(ctx, ino, 0);
458 e2fsck_adjust_inode_count(ctx, ino, -1);
460 * If the old lost+found was a directory, we've just
461 * disconnected it from the directory tree, which
462 * means we need to restart the directory tree scan.
463 * The simplest way to do this is restart the whole
466 if (LINUX_S_ISDIR(inode.i_mode))
467 ctx->flags |= E2F_FLAG_RESTART;
468 } else if (retval != EXT2_ET_FILE_NOT_FOUND) {
469 pctx.errcode = retval;
470 fix_problem(ctx, PR_3_ERR_FIND_LPF, &pctx);
472 if (!fix_problem(ctx, PR_3_NO_LF_DIR, 0))
476 * Read the inode and block bitmaps in; we'll be messing with
479 e2fsck_read_bitmaps(ctx);
482 * First, find a free block
484 if (ctx->lnf_repair_block) {
485 blk = ctx->lnf_repair_block;
486 ctx->lnf_repair_block = 0;
489 retval = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
490 if (retval == EXT2_ET_BLOCK_ALLOC_FAIL &&
491 fix_problem(ctx, PR_3_LPF_NO_SPACE, &pctx)) {
492 fix_problem(ctx, PR_3_NO_SPACE_TO_RECOVER, &pctx);
493 ctx->lost_and_found = EXT2_ROOT_INO;
497 pctx.errcode = retval;
498 fix_problem(ctx, PR_3_ERR_LPF_NEW_BLOCK, &pctx);
501 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
503 ext2fs_block_alloc_stats2(fs, blk, +1);
506 * Next find a free inode.
508 retval = ext2fs_new_inode(fs, EXT2_ROOT_INO, 040700,
509 ctx->inode_used_map, &ino);
510 if (retval == EXT2_ET_INODE_ALLOC_FAIL &&
511 fix_problem(ctx, PR_3_LPF_NO_SPACE, &pctx)) {
512 fix_problem(ctx, PR_3_NO_SPACE_TO_RECOVER, &pctx);
513 ctx->lost_and_found = EXT2_ROOT_INO;
517 pctx.errcode = retval;
518 fix_problem(ctx, PR_3_ERR_LPF_NEW_INODE, &pctx);
521 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
522 ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
523 ext2fs_inode_alloc_stats2(fs, ino, +1, 1);
526 * Set up the inode structure
528 memset(&inode, 0, sizeof(inode));
529 inode.i_mode = 040700;
530 inode.i_size = fs->blocksize;
531 inode.i_atime = inode.i_ctime = inode.i_mtime = ctx->now;
532 inode.i_links_count = 2;
533 ext2fs_iblk_set(fs, EXT2_INODE(&inode), 1);
534 inode.i_block[0] = blk;
537 * Next, write out the inode.
539 pctx.errcode = ext2fs_write_new_inode(fs, ino, EXT2_INODE(&inode));
541 pctx.str = "ext2fs_write_inode";
542 fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
547 * Now let's create the actual data block for the inode.
548 * Due to metadata_csum, the directory block MUST be written
549 * after the inode is written to disk!
551 retval = ext2fs_new_dir_block(fs, ino, EXT2_ROOT_INO, &block);
553 pctx.errcode = retval;
554 fix_problem(ctx, PR_3_ERR_LPF_NEW_DIR_BLOCK, &pctx);
558 retval = ext2fs_write_dir_block4(fs, blk, block, 0, ino);
559 ext2fs_free_mem(&block);
561 pctx.errcode = retval;
562 fix_problem(ctx, PR_3_ERR_LPF_WRITE_BLOCK, &pctx);
567 * Finally, create the directory link
569 pctx.errcode = ext2fs_link(fs, EXT2_ROOT_INO, name, ino, EXT2_FT_DIR);
570 if (pctx.errcode == EXT2_ET_DIR_NO_SPACE) {
571 pctx.errcode = ext2fs_expand_dir(fs, EXT2_ROOT_INO);
574 pctx.errcode = ext2fs_link(fs, EXT2_ROOT_INO, name, ino,
579 pctx.str = "ext2fs_link";
580 fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
585 * Miscellaneous bookkeeping that needs to be kept straight.
587 e2fsck_add_dir_info(ctx, ino, EXT2_ROOT_INO);
588 e2fsck_adjust_inode_count(ctx, EXT2_ROOT_INO, 1);
589 ext2fs_icount_store(ctx->inode_count, ino, 2);
590 ext2fs_icount_store(ctx->inode_link_info, ino, 2);
591 ctx->lost_and_found = ino;
592 quota_data_add(ctx->qctx, &inode, ino, EXT2_CLUSTER_SIZE(fs->super));
593 quota_data_inodes(ctx->qctx, &inode, ino, +1);
595 printf("/lost+found created; inode #%lu\n", ino);
601 * This routine will connect a file to lost+found
603 int e2fsck_reconnect_file(e2fsck_t ctx, ext2_ino_t ino)
605 ext2_filsys fs = ctx->fs;
608 struct problem_context pctx;
609 struct ext2_inode inode;
612 clear_problem_context(&pctx);
615 if (!ctx->bad_lost_and_found && !ctx->lost_and_found) {
616 if (e2fsck_get_lost_and_found(ctx, 1) == 0)
617 ctx->bad_lost_and_found++;
619 if (ctx->bad_lost_and_found) {
620 fix_problem(ctx, PR_3_NO_LPF, &pctx);
624 sprintf(name, "#%u", ino);
625 if (ext2fs_read_inode(fs, ino, &inode) == 0)
626 file_type = ext2_file_type(inode.i_mode);
627 retval = ext2fs_link(fs, ctx->lost_and_found, name, ino, file_type);
628 if (retval == EXT2_ET_DIR_NO_SPACE) {
629 if (!fix_problem(ctx, PR_3_EXPAND_LF_DIR, &pctx))
631 retval = e2fsck_expand_directory(ctx, ctx->lost_and_found,
634 pctx.errcode = retval;
635 fix_problem(ctx, PR_3_CANT_EXPAND_LPF, &pctx);
638 retval = ext2fs_link(fs, ctx->lost_and_found, name,
642 pctx.errcode = retval;
643 fix_problem(ctx, PR_3_CANT_RECONNECT, &pctx);
646 e2fsck_adjust_inode_count(ctx, ino, 1);
652 * Utility routine to adjust the inode counts on an inode.
654 errcode_t e2fsck_adjust_inode_count(e2fsck_t ctx, ext2_ino_t ino, int adj)
656 ext2_filsys fs = ctx->fs;
658 struct ext2_inode inode;
663 retval = ext2fs_read_inode(fs, ino, &inode);
668 printf("Adjusting link count for inode %lu by %d (from %d)\n", ino, adj,
669 inode.i_links_count);
673 ext2fs_icount_increment(ctx->inode_count, ino, 0);
674 if (inode.i_links_count == (__u16) ~0)
676 ext2fs_icount_increment(ctx->inode_link_info, ino, 0);
677 inode.i_links_count++;
678 } else if (adj == -1) {
679 ext2fs_icount_decrement(ctx->inode_count, ino, 0);
680 if (inode.i_links_count == 0)
682 ext2fs_icount_decrement(ctx->inode_link_info, ino, 0);
683 inode.i_links_count--;
686 retval = ext2fs_write_inode(fs, ino, &inode);
694 * Fix parent --- this routine fixes up the parent of a directory.
696 struct fix_dotdot_struct {
703 static int fix_dotdot_proc(struct ext2_dir_entry *dirent,
704 int offset EXT2FS_ATTR((unused)),
705 int blocksize EXT2FS_ATTR((unused)),
706 char *buf EXT2FS_ATTR((unused)),
709 struct fix_dotdot_struct *fp = (struct fix_dotdot_struct *) priv_data;
711 struct problem_context pctx;
713 if (ext2fs_dirent_name_len(dirent) != 2)
715 if (strncmp(dirent->name, "..", 2))
718 clear_problem_context(&pctx);
720 retval = e2fsck_adjust_inode_count(fp->ctx, dirent->inode, -1);
722 pctx.errcode = retval;
723 fix_problem(fp->ctx, PR_3_ADJUST_INODE, &pctx);
725 retval = e2fsck_adjust_inode_count(fp->ctx, fp->parent, 1);
727 pctx.errcode = retval;
728 fix_problem(fp->ctx, PR_3_ADJUST_INODE, &pctx);
730 dirent->inode = fp->parent;
731 if (ext2fs_has_feature_filetype(fp->ctx->fs->super))
732 ext2fs_dirent_set_file_type(dirent, EXT2_FT_DIR);
734 ext2fs_dirent_set_file_type(dirent, EXT2_FT_UNKNOWN);
737 return DIRENT_ABORT | DIRENT_CHANGED;
740 static void fix_dotdot(e2fsck_t ctx, ext2_ino_t ino, ext2_ino_t parent)
742 ext2_filsys fs = ctx->fs;
744 struct fix_dotdot_struct fp;
745 struct problem_context pctx;
746 int flags, will_rehash;
754 printf("Fixing '..' of inode %lu to be %lu...\n", ino, parent);
757 clear_problem_context(&pctx);
759 will_rehash = e2fsck_dir_will_be_rehashed(ctx, ino);
761 flags = ctx->fs->flags;
762 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
764 retval = ext2fs_dir_iterate(fs, ino, DIRENT_FLAG_INCLUDE_EMPTY,
765 0, fix_dotdot_proc, &fp);
767 ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
768 (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
769 if (retval || !fp.done) {
770 pctx.errcode = retval;
771 fix_problem(ctx, retval ? PR_3_FIX_PARENT_ERR :
772 PR_3_FIX_PARENT_NOFIND, &pctx);
773 ext2fs_unmark_valid(fs);
775 (void) e2fsck_dir_info_set_dotdot(ctx, ino, parent);
776 if (e2fsck_dir_info_set_parent(ctx, ino, ctx->lost_and_found))
777 fix_problem(ctx, PR_3_NO_DIRINFO, &pctx);
783 * These routines are responsible for expanding a /lost+found if it is
787 struct expand_dir_struct {
789 e2_blkcnt_t guaranteed_size;
797 static int expand_dir_proc(ext2_filsys fs,
799 e2_blkcnt_t blockcnt,
800 blk64_t ref_block EXT2FS_ATTR((unused)),
801 int ref_offset EXT2FS_ATTR((unused)),
804 struct expand_dir_struct *es = (struct expand_dir_struct *) priv_data;
806 static blk64_t last_blk = 0;
813 if (es->guaranteed_size && blockcnt >= es->guaranteed_size)
817 es->last_block = blockcnt;
824 (EXT2FS_B2C(fs, last_blk) == EXT2FS_B2C(fs, last_blk + 1)))
825 new_blk = last_blk + 1;
827 last_blk &= ~EXT2FS_CLUSTER_MASK(fs);
828 retval = ext2fs_new_block2(fs, last_blk, ctx->block_found_map,
835 ext2fs_block_alloc_stats2(fs, new_blk, +1);
840 retval = ext2fs_new_dir_block(fs, 0, 0, &block);
846 retval = ext2fs_write_dir_block4(fs, new_blk, block, 0,
848 ext2fs_free_mem(&block);
850 retval = ext2fs_zero_blocks2(fs, new_blk, 1, NULL, NULL);
856 ext2fs_mark_block_bitmap2(ctx->block_found_map, new_blk);
859 return (BLOCK_CHANGED | BLOCK_ABORT);
861 return BLOCK_CHANGED;
864 errcode_t e2fsck_expand_directory(e2fsck_t ctx, ext2_ino_t dir,
865 int num, int guaranteed_size)
867 ext2_filsys fs = ctx->fs;
869 struct expand_dir_struct es;
870 struct ext2_inode_large inode;
873 if (!(fs->flags & EXT2_FLAG_RW))
874 return EXT2_ET_RO_FILSYS;
877 * Read the inode and block bitmaps in; we'll be messing with
880 e2fsck_read_bitmaps(ctx);
882 retval = ext2fs_check_directory(fs, dir);
887 es.guaranteed_size = guaranteed_size;
894 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_APPEND,
895 0, expand_dir_proc, &es);
901 * Update the size and block count fields in the inode.
903 retval = ext2fs_read_inode_full(fs, dir,
904 EXT2_INODE(&inode), sizeof(inode));
908 sz = (es.last_block + 1) * fs->blocksize;
909 retval = ext2fs_inode_size_set(fs, EXT2_INODE(&inode), sz);
912 ext2fs_iblk_add_blocks(fs, EXT2_INODE(&inode), es.newblocks);
913 quota_data_add(ctx->qctx, &inode, dir,
914 es.newblocks * EXT2_CLUSTER_SIZE(fs->super));
916 e2fsck_write_inode_full(ctx, dir, EXT2_INODE(&inode),
917 sizeof(inode), "expand_directory");