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 ||
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 inode;
162 struct problem_context pctx;
164 clear_problem_context(&pctx);
166 if (ext2fs_test_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO)) {
168 * If the root inode is not a directory, die here. The
169 * user must have answered 'no' in pass1 when we
170 * offered to clear it.
172 if (!(ext2fs_test_inode_bitmap2(ctx->inode_dir_map,
174 fix_problem(ctx, PR_3_ROOT_NOT_DIR_ABORT, &pctx);
175 ctx->flags |= E2F_FLAG_ABORT;
180 if (!fix_problem(ctx, PR_3_NO_ROOT_INODE, &pctx)) {
181 fix_problem(ctx, PR_3_NO_ROOT_INODE_ABORT, &pctx);
182 ctx->flags |= E2F_FLAG_ABORT;
186 e2fsck_read_bitmaps(ctx);
189 * First, find a free block
191 if (ctx->root_repair_block) {
192 blk = ctx->root_repair_block;
193 ctx->root_repair_block = 0;
196 pctx.errcode = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
198 pctx.str = "ext2fs_new_block";
199 fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
200 ctx->flags |= E2F_FLAG_ABORT;
203 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
205 ext2fs_mark_block_bitmap2(fs->block_map, blk);
206 ext2fs_mark_bb_dirty(fs);
209 * Set up the inode structure
211 memset(&inode, 0, sizeof(inode));
212 inode.i_mode = 040755;
213 inode.i_size = fs->blocksize;
214 inode.i_atime = inode.i_ctime = inode.i_mtime = ctx->now;
215 inode.i_links_count = 2;
216 ext2fs_iblk_set(fs, &inode, 1);
217 inode.i_block[0] = blk;
220 * Write out the inode.
222 pctx.errcode = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
224 pctx.str = "ext2fs_write_inode";
225 fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
226 ctx->flags |= E2F_FLAG_ABORT;
231 * Now let's create the actual data block for the inode.
232 * Due to metadata_csum, we must write the dir blocks AFTER
233 * the inode has been written to disk!
235 pctx.errcode = ext2fs_new_dir_block(fs, EXT2_ROOT_INO, EXT2_ROOT_INO,
238 pctx.str = "ext2fs_new_dir_block";
239 fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
240 ctx->flags |= E2F_FLAG_ABORT;
244 pctx.errcode = ext2fs_write_dir_block4(fs, blk, block, 0,
246 ext2fs_free_mem(&block);
248 pctx.str = "ext2fs_write_dir_block4";
249 fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx);
250 ctx->flags |= E2F_FLAG_ABORT;
255 * Miscellaneous bookkeeping...
257 e2fsck_add_dir_info(ctx, EXT2_ROOT_INO, EXT2_ROOT_INO);
258 ext2fs_icount_store(ctx->inode_count, EXT2_ROOT_INO, 2);
259 ext2fs_icount_store(ctx->inode_link_info, EXT2_ROOT_INO, 2);
261 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO);
262 ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, EXT2_ROOT_INO);
263 ext2fs_mark_inode_bitmap2(fs->inode_map, EXT2_ROOT_INO);
264 ext2fs_mark_ib_dirty(fs);
268 * This subroutine is responsible for making sure that a particular
269 * directory is connected to the root; if it isn't we trace it up as
270 * far as we can go, and then offer to connect the resulting parent to
271 * the lost+found. We have to do loop detection; if we ever discover
272 * a loop, we treat that as a disconnected directory and offer to
273 * reparent it to lost+found.
275 * However, loop detection is expensive, because for very large
276 * filesystems, the inode_loop_detect bitmap is huge, and clearing it
277 * is non-trivial. Loops in filesystems are also a rare error case,
278 * and we shouldn't optimize for error cases. So we try two passes of
279 * the algorithm. The first time, we ignore loop detection and merely
280 * increment a counter; if the counter exceeds some extreme threshold,
281 * then we try again with the loop detection bitmap enabled.
283 static int check_directory(e2fsck_t ctx, ext2_ino_t dir,
284 struct problem_context *pctx)
286 ext2_filsys fs = ctx->fs;
287 ext2_ino_t ino = dir, parent;
288 int loop_pass = 0, parent_count = 0;
292 * Mark this inode as being "done"; by the time we
293 * return from this function, the inode we either be
294 * verified as being connected to the directory tree,
295 * or we will have offered to reconnect this to
298 * If it was marked done already, then we've reached a
299 * parent we've already checked.
301 if (ext2fs_mark_inode_bitmap2(inode_done_map, ino))
304 if (e2fsck_dir_info_get_parent(ctx, ino, &parent)) {
305 fix_problem(ctx, PR_3_NO_DIRINFO, pctx);
310 * If this directory doesn't have a parent, or we've
311 * seen the parent once already, then offer to
312 * reparent it to lost+found
316 (ext2fs_test_inode_bitmap2(inode_loop_detect,
319 if (fix_problem(ctx, PR_3_UNCONNECTED_DIR, pctx)) {
320 if (e2fsck_reconnect_file(ctx, pctx->ino))
321 ext2fs_unmark_valid(fs);
323 fix_dotdot(ctx, pctx->ino,
324 ctx->lost_and_found);
325 parent = ctx->lost_and_found;
332 ext2fs_mark_inode_bitmap2(inode_loop_detect, ino);
333 } else if (parent_count++ > 2048) {
335 * If we've run into a path depth that's
336 * greater than 2048, try again with the inode
337 * loop bitmap turned on and start from the
341 if (inode_loop_detect)
342 ext2fs_clear_inode_bitmap(inode_loop_detect);
344 pctx->errcode = e2fsck_allocate_inode_bitmap(fs, _("inode loop detection bitmap"), EXT2FS_BMAP64_AUTODIR, "inode_loop_detect", &inode_loop_detect);
348 PR_3_ALLOCATE_IBITMAP_ERROR, pctx);
349 ctx->flags |= E2F_FLAG_ABORT;
358 * Make sure that .. and the parent directory are the same;
359 * offer to fix it if not.
362 if (e2fsck_dir_info_get_dotdot(ctx, dir, &pctx->ino2) ||
363 e2fsck_dir_info_get_parent(ctx, dir, &pctx->dir)) {
364 fix_problem(ctx, PR_3_NO_DIRINFO, pctx);
367 if (pctx->ino2 != pctx->dir) {
368 if (fix_problem(ctx, PR_3_BAD_DOT_DOT, pctx))
369 fix_dotdot(ctx, dir, pctx->dir);
375 * This routine gets the lost_and_found inode, making it a directory
378 ext2_ino_t e2fsck_get_lost_and_found(e2fsck_t ctx, int fix)
380 ext2_filsys fs = ctx->fs;
384 struct ext2_inode_large inode;
386 static const char name[] = "lost+found";
387 struct problem_context pctx;
388 int will_rehash, flags;
390 if (ctx->lost_and_found)
391 return ctx->lost_and_found;
393 clear_problem_context(&pctx);
395 will_rehash = e2fsck_dir_will_be_rehashed(ctx, EXT2_ROOT_INO);
397 flags = ctx->fs->flags;
398 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
400 retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name,
401 sizeof(name)-1, 0, &ino);
403 ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
404 (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
408 /* Lost+found shouldn't have inline data */
409 retval = ext2fs_read_inode_full(fs, ino, EXT2_INODE(&inode),
414 if (fix && (inode.i_flags & EXT4_INLINE_DATA_FL)) {
415 if (!fix_problem(ctx, PR_3_LPF_INLINE_DATA, &pctx))
420 if (fix && (inode.i_flags & EXT4_ENCRYPT_FL)) {
421 if (!fix_problem(ctx, PR_3_LPF_ENCRYPTED, &pctx))
426 if (ext2fs_check_directory(fs, ino) == 0) {
427 ctx->lost_and_found = ino;
431 /* Lost+found isn't a directory! */
435 if (!fix_problem(ctx, PR_3_LPF_NOTDIR, &pctx))
439 /* OK, unlink the old /lost+found file. */
440 pctx.errcode = ext2fs_unlink(fs, EXT2_ROOT_INO, name, ino, 0);
442 pctx.str = "ext2fs_unlink";
443 fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
446 (void) e2fsck_dir_info_set_parent(ctx, ino, 0);
447 e2fsck_adjust_inode_count(ctx, ino, -1);
449 * If the old lost+found was a directory, we've just
450 * disconnected it from the directory tree, which
451 * means we need to restart the directory tree scan.
452 * The simplest way to do this is restart the whole
455 if (LINUX_S_ISDIR(inode.i_mode))
456 ctx->flags |= E2F_FLAG_RESTART;
457 } else if (retval != EXT2_ET_FILE_NOT_FOUND) {
458 pctx.errcode = retval;
459 fix_problem(ctx, PR_3_ERR_FIND_LPF, &pctx);
461 if (!fix_problem(ctx, PR_3_NO_LF_DIR, 0))
465 * Read the inode and block bitmaps in; we'll be messing with
468 e2fsck_read_bitmaps(ctx);
471 * First, find a free block
473 if (ctx->lnf_repair_block) {
474 blk = ctx->lnf_repair_block;
475 ctx->lnf_repair_block = 0;
478 retval = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
479 if (retval == EXT2_ET_BLOCK_ALLOC_FAIL &&
480 fix_problem(ctx, PR_3_LPF_NO_SPACE, &pctx)) {
481 fix_problem(ctx, PR_3_NO_SPACE_TO_RECOVER, &pctx);
482 ctx->lost_and_found = EXT2_ROOT_INO;
486 pctx.errcode = retval;
487 fix_problem(ctx, PR_3_ERR_LPF_NEW_BLOCK, &pctx);
490 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
492 ext2fs_block_alloc_stats2(fs, blk, +1);
495 * Next find a free inode.
497 retval = ext2fs_new_inode(fs, EXT2_ROOT_INO, 040700,
498 ctx->inode_used_map, &ino);
499 if (retval == EXT2_ET_INODE_ALLOC_FAIL &&
500 fix_problem(ctx, PR_3_LPF_NO_SPACE, &pctx)) {
501 fix_problem(ctx, PR_3_NO_SPACE_TO_RECOVER, &pctx);
502 ctx->lost_and_found = EXT2_ROOT_INO;
506 pctx.errcode = retval;
507 fix_problem(ctx, PR_3_ERR_LPF_NEW_INODE, &pctx);
510 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
511 ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
512 ext2fs_inode_alloc_stats2(fs, ino, +1, 1);
515 * Set up the inode structure
517 memset(&inode, 0, sizeof(inode));
518 inode.i_mode = 040700;
519 inode.i_size = fs->blocksize;
520 inode.i_atime = inode.i_ctime = inode.i_mtime = ctx->now;
521 inode.i_links_count = 2;
522 ext2fs_iblk_set(fs, EXT2_INODE(&inode), 1);
523 inode.i_block[0] = blk;
526 * Next, write out the inode.
528 pctx.errcode = ext2fs_write_new_inode(fs, ino, EXT2_INODE(&inode));
530 pctx.str = "ext2fs_write_inode";
531 fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
536 * Now let's create the actual data block for the inode.
537 * Due to metadata_csum, the directory block MUST be written
538 * after the inode is written to disk!
540 retval = ext2fs_new_dir_block(fs, ino, EXT2_ROOT_INO, &block);
542 pctx.errcode = retval;
543 fix_problem(ctx, PR_3_ERR_LPF_NEW_DIR_BLOCK, &pctx);
547 retval = ext2fs_write_dir_block4(fs, blk, block, 0, ino);
548 ext2fs_free_mem(&block);
550 pctx.errcode = retval;
551 fix_problem(ctx, PR_3_ERR_LPF_WRITE_BLOCK, &pctx);
556 * Finally, create the directory link
558 pctx.errcode = ext2fs_link(fs, EXT2_ROOT_INO, name, ino, EXT2_FT_DIR);
559 if (pctx.errcode == EXT2_ET_DIR_NO_SPACE) {
560 pctx.errcode = ext2fs_expand_dir(fs, EXT2_ROOT_INO);
563 pctx.errcode = ext2fs_link(fs, EXT2_ROOT_INO, name, ino,
568 pctx.str = "ext2fs_link";
569 fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
574 * Miscellaneous bookkeeping that needs to be kept straight.
576 e2fsck_add_dir_info(ctx, ino, EXT2_ROOT_INO);
577 e2fsck_adjust_inode_count(ctx, EXT2_ROOT_INO, 1);
578 ext2fs_icount_store(ctx->inode_count, ino, 2);
579 ext2fs_icount_store(ctx->inode_link_info, ino, 2);
580 ctx->lost_and_found = ino;
581 quota_data_add(ctx->qctx, &inode, ino, fs->blocksize);
582 quota_data_inodes(ctx->qctx, &inode, ino, +1);
584 printf("/lost+found created; inode #%lu\n", ino);
590 * This routine will connect a file to lost+found
592 int e2fsck_reconnect_file(e2fsck_t ctx, ext2_ino_t ino)
594 ext2_filsys fs = ctx->fs;
597 struct problem_context pctx;
598 struct ext2_inode inode;
601 clear_problem_context(&pctx);
604 if (!ctx->bad_lost_and_found && !ctx->lost_and_found) {
605 if (e2fsck_get_lost_and_found(ctx, 1) == 0)
606 ctx->bad_lost_and_found++;
608 if (ctx->bad_lost_and_found) {
609 fix_problem(ctx, PR_3_NO_LPF, &pctx);
613 sprintf(name, "#%u", ino);
614 if (ext2fs_read_inode(fs, ino, &inode) == 0)
615 file_type = ext2_file_type(inode.i_mode);
616 retval = ext2fs_link(fs, ctx->lost_and_found, name, ino, file_type);
617 if (retval == EXT2_ET_DIR_NO_SPACE) {
618 if (!fix_problem(ctx, PR_3_EXPAND_LF_DIR, &pctx))
620 retval = e2fsck_expand_directory(ctx, ctx->lost_and_found,
623 pctx.errcode = retval;
624 fix_problem(ctx, PR_3_CANT_EXPAND_LPF, &pctx);
627 retval = ext2fs_link(fs, ctx->lost_and_found, name,
631 pctx.errcode = retval;
632 fix_problem(ctx, PR_3_CANT_RECONNECT, &pctx);
635 e2fsck_adjust_inode_count(ctx, ino, 1);
641 * Utility routine to adjust the inode counts on an inode.
643 errcode_t e2fsck_adjust_inode_count(e2fsck_t ctx, ext2_ino_t ino, int adj)
645 ext2_filsys fs = ctx->fs;
647 struct ext2_inode inode;
652 retval = ext2fs_read_inode(fs, ino, &inode);
657 printf("Adjusting link count for inode %lu by %d (from %d)\n", ino, adj,
658 inode.i_links_count);
662 ext2fs_icount_increment(ctx->inode_count, ino, 0);
663 if (inode.i_links_count == (__u16) ~0)
665 ext2fs_icount_increment(ctx->inode_link_info, ino, 0);
666 inode.i_links_count++;
667 } else if (adj == -1) {
668 ext2fs_icount_decrement(ctx->inode_count, ino, 0);
669 if (inode.i_links_count == 0)
671 ext2fs_icount_decrement(ctx->inode_link_info, ino, 0);
672 inode.i_links_count--;
675 retval = ext2fs_write_inode(fs, ino, &inode);
683 * Fix parent --- this routine fixes up the parent of a directory.
685 struct fix_dotdot_struct {
692 static int fix_dotdot_proc(struct ext2_dir_entry *dirent,
693 int offset EXT2FS_ATTR((unused)),
694 int blocksize EXT2FS_ATTR((unused)),
695 char *buf EXT2FS_ATTR((unused)),
698 struct fix_dotdot_struct *fp = (struct fix_dotdot_struct *) priv_data;
700 struct problem_context pctx;
702 if (ext2fs_dirent_name_len(dirent) != 2)
704 if (strncmp(dirent->name, "..", 2))
707 clear_problem_context(&pctx);
709 retval = e2fsck_adjust_inode_count(fp->ctx, dirent->inode, -1);
711 pctx.errcode = retval;
712 fix_problem(fp->ctx, PR_3_ADJUST_INODE, &pctx);
714 retval = e2fsck_adjust_inode_count(fp->ctx, fp->parent, 1);
716 pctx.errcode = retval;
717 fix_problem(fp->ctx, PR_3_ADJUST_INODE, &pctx);
719 dirent->inode = fp->parent;
720 if (ext2fs_has_feature_filetype(fp->ctx->fs->super))
721 ext2fs_dirent_set_file_type(dirent, EXT2_FT_DIR);
723 ext2fs_dirent_set_file_type(dirent, EXT2_FT_UNKNOWN);
726 return DIRENT_ABORT | DIRENT_CHANGED;
729 static void fix_dotdot(e2fsck_t ctx, ext2_ino_t ino, ext2_ino_t parent)
731 ext2_filsys fs = ctx->fs;
733 struct fix_dotdot_struct fp;
734 struct problem_context pctx;
735 int flags, will_rehash;
743 printf("Fixing '..' of inode %lu to be %lu...\n", ino, parent);
746 clear_problem_context(&pctx);
748 will_rehash = e2fsck_dir_will_be_rehashed(ctx, ino);
750 flags = ctx->fs->flags;
751 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
753 retval = ext2fs_dir_iterate(fs, ino, DIRENT_FLAG_INCLUDE_EMPTY,
754 0, fix_dotdot_proc, &fp);
756 ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
757 (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
758 if (retval || !fp.done) {
759 pctx.errcode = retval;
760 fix_problem(ctx, retval ? PR_3_FIX_PARENT_ERR :
761 PR_3_FIX_PARENT_NOFIND, &pctx);
762 ext2fs_unmark_valid(fs);
764 (void) e2fsck_dir_info_set_dotdot(ctx, ino, parent);
765 if (e2fsck_dir_info_set_parent(ctx, ino, ctx->lost_and_found))
766 fix_problem(ctx, PR_3_NO_DIRINFO, &pctx);
772 * These routines are responsible for expanding a /lost+found if it is
776 struct expand_dir_struct {
778 e2_blkcnt_t guaranteed_size;
786 static int expand_dir_proc(ext2_filsys fs,
788 e2_blkcnt_t blockcnt,
789 blk64_t ref_block EXT2FS_ATTR((unused)),
790 int ref_offset EXT2FS_ATTR((unused)),
793 struct expand_dir_struct *es = (struct expand_dir_struct *) priv_data;
795 static blk64_t last_blk = 0;
802 if (es->guaranteed_size && blockcnt >= es->guaranteed_size)
806 es->last_block = blockcnt;
813 (EXT2FS_B2C(fs, last_blk) == EXT2FS_B2C(fs, last_blk + 1)))
814 new_blk = last_blk + 1;
816 last_blk &= ~EXT2FS_CLUSTER_MASK(fs);
817 retval = ext2fs_new_block2(fs, last_blk, ctx->block_found_map,
824 ext2fs_block_alloc_stats2(fs, new_blk, +1);
829 retval = ext2fs_new_dir_block(fs, 0, 0, &block);
835 retval = ext2fs_write_dir_block4(fs, new_blk, block, 0,
837 ext2fs_free_mem(&block);
839 retval = ext2fs_zero_blocks2(fs, new_blk, 1, NULL, NULL);
845 ext2fs_mark_block_bitmap2(ctx->block_found_map, new_blk);
848 return (BLOCK_CHANGED | BLOCK_ABORT);
850 return BLOCK_CHANGED;
853 errcode_t e2fsck_expand_directory(e2fsck_t ctx, ext2_ino_t dir,
854 int num, int guaranteed_size)
856 ext2_filsys fs = ctx->fs;
858 struct expand_dir_struct es;
859 struct ext2_inode_large inode;
862 if (!(fs->flags & EXT2_FLAG_RW))
863 return EXT2_ET_RO_FILSYS;
866 * Read the inode and block bitmaps in; we'll be messing with
869 e2fsck_read_bitmaps(ctx);
871 retval = ext2fs_check_directory(fs, dir);
876 es.guaranteed_size = guaranteed_size;
883 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_APPEND,
884 0, expand_dir_proc, &es);
890 * Update the size and block count fields in the inode.
892 retval = ext2fs_read_inode_full(fs, dir,
893 EXT2_INODE(&inode), sizeof(inode));
897 sz = (es.last_block + 1) * fs->blocksize;
898 retval = ext2fs_inode_size_set(fs, EXT2_INODE(&inode), sz);
901 ext2fs_iblk_add_blocks(fs, EXT2_INODE(&inode), es.newblocks);
902 quota_data_add(ctx->qctx, &inode, dir, es.newblocks * fs->blocksize);
904 e2fsck_write_inode_full(ctx, dir, EXT2_INODE(&inode),
905 sizeof(inode), "expand_directory");