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 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(fs
, ino
, &inode
);
413 if (fix
&& (inode
.i_flags
& EXT4_INLINE_DATA_FL
)) {
414 if (!fix_problem(ctx
, PR_3_LPF_INLINE_DATA
, &pctx
))
419 if (fix
&& (inode
.i_flags
& EXT4_ENCRYPT_FL
)) {
420 if (!fix_problem(ctx
, PR_3_LPF_ENCRYPTED
, &pctx
))
425 if (ext2fs_check_directory(fs
, ino
) == 0) {
426 ctx
->lost_and_found
= ino
;
430 /* Lost+found isn't a directory! */
434 if (!fix_problem(ctx
, PR_3_LPF_NOTDIR
, &pctx
))
438 /* OK, unlink the old /lost+found file. */
439 pctx
.errcode
= ext2fs_unlink(fs
, EXT2_ROOT_INO
, name
, ino
, 0);
441 pctx
.str
= "ext2fs_unlink";
442 fix_problem(ctx
, PR_3_CREATE_LPF_ERROR
, &pctx
);
445 (void) e2fsck_dir_info_set_parent(ctx
, ino
, 0);
446 e2fsck_adjust_inode_count(ctx
, ino
, -1);
448 * If the old lost+found was a directory, we've just
449 * disconnected it from the directory tree, which
450 * means we need to restart the directory tree scan.
451 * The simplest way to do this is restart the whole
454 if (LINUX_S_ISDIR(inode
.i_mode
))
455 ctx
->flags
|= E2F_FLAG_RESTART
;
456 } else if (retval
!= EXT2_ET_FILE_NOT_FOUND
) {
457 pctx
.errcode
= retval
;
458 fix_problem(ctx
, PR_3_ERR_FIND_LPF
, &pctx
);
460 if (!fix_problem(ctx
, PR_3_NO_LF_DIR
, 0))
464 * Read the inode and block bitmaps in; we'll be messing with
467 e2fsck_read_bitmaps(ctx
);
470 * First, find a free block
472 if (ctx
->lnf_repair_block
) {
473 blk
= ctx
->lnf_repair_block
;
474 ctx
->lnf_repair_block
= 0;
477 retval
= ext2fs_new_block2(fs
, 0, ctx
->block_found_map
, &blk
);
478 if (retval
== EXT2_ET_BLOCK_ALLOC_FAIL
&&
479 fix_problem(ctx
, PR_3_LPF_NO_SPACE
, &pctx
)) {
480 fix_problem(ctx
, PR_3_NO_SPACE_TO_RECOVER
, &pctx
);
481 ctx
->lost_and_found
= EXT2_ROOT_INO
;
485 pctx
.errcode
= retval
;
486 fix_problem(ctx
, PR_3_ERR_LPF_NEW_BLOCK
, &pctx
);
489 ext2fs_mark_block_bitmap2(ctx
->block_found_map
, blk
);
491 ext2fs_block_alloc_stats2(fs
, blk
, +1);
494 * Next find a free inode.
496 retval
= ext2fs_new_inode(fs
, EXT2_ROOT_INO
, 040700,
497 ctx
->inode_used_map
, &ino
);
498 if (retval
== EXT2_ET_INODE_ALLOC_FAIL
&&
499 fix_problem(ctx
, PR_3_LPF_NO_SPACE
, &pctx
)) {
500 fix_problem(ctx
, PR_3_NO_SPACE_TO_RECOVER
, &pctx
);
501 ctx
->lost_and_found
= EXT2_ROOT_INO
;
505 pctx
.errcode
= retval
;
506 fix_problem(ctx
, PR_3_ERR_LPF_NEW_INODE
, &pctx
);
509 ext2fs_mark_inode_bitmap2(ctx
->inode_used_map
, ino
);
510 ext2fs_mark_inode_bitmap2(ctx
->inode_dir_map
, ino
);
511 ext2fs_inode_alloc_stats2(fs
, ino
, +1, 1);
514 * Set up the inode structure
516 memset(&inode
, 0, sizeof(inode
));
517 inode
.i_mode
= 040700;
518 inode
.i_size
= fs
->blocksize
;
519 inode
.i_atime
= inode
.i_ctime
= inode
.i_mtime
= ctx
->now
;
520 inode
.i_links_count
= 2;
521 ext2fs_iblk_set(fs
, &inode
, 1);
522 inode
.i_block
[0] = blk
;
525 * Next, write out the inode.
527 pctx
.errcode
= ext2fs_write_new_inode(fs
, ino
, &inode
);
529 pctx
.str
= "ext2fs_write_inode";
530 fix_problem(ctx
, PR_3_CREATE_LPF_ERROR
, &pctx
);
535 * Now let's create the actual data block for the inode.
536 * Due to metadata_csum, the directory block MUST be written
537 * after the inode is written to disk!
539 retval
= ext2fs_new_dir_block(fs
, ino
, EXT2_ROOT_INO
, &block
);
541 pctx
.errcode
= retval
;
542 fix_problem(ctx
, PR_3_ERR_LPF_NEW_DIR_BLOCK
, &pctx
);
546 retval
= ext2fs_write_dir_block4(fs
, blk
, block
, 0, ino
);
547 ext2fs_free_mem(&block
);
549 pctx
.errcode
= retval
;
550 fix_problem(ctx
, PR_3_ERR_LPF_WRITE_BLOCK
, &pctx
);
555 * Finally, create the directory link
557 pctx
.errcode
= ext2fs_link(fs
, EXT2_ROOT_INO
, name
, ino
, EXT2_FT_DIR
);
558 if (pctx
.errcode
== EXT2_ET_DIR_NO_SPACE
) {
559 pctx
.errcode
= ext2fs_expand_dir(fs
, EXT2_ROOT_INO
);
562 pctx
.errcode
= ext2fs_link(fs
, EXT2_ROOT_INO
, name
, ino
,
567 pctx
.str
= "ext2fs_link";
568 fix_problem(ctx
, PR_3_CREATE_LPF_ERROR
, &pctx
);
573 * Miscellaneous bookkeeping that needs to be kept straight.
575 e2fsck_add_dir_info(ctx
, ino
, EXT2_ROOT_INO
);
576 e2fsck_adjust_inode_count(ctx
, EXT2_ROOT_INO
, 1);
577 ext2fs_icount_store(ctx
->inode_count
, ino
, 2);
578 ext2fs_icount_store(ctx
->inode_link_info
, ino
, 2);
579 ctx
->lost_and_found
= ino
;
580 quota_data_add(ctx
->qctx
, &inode
, ino
, fs
->blocksize
);
581 quota_data_inodes(ctx
->qctx
, &inode
, ino
, +1);
583 printf("/lost+found created; inode #%lu\n", ino
);
589 * This routine will connect a file to lost+found
591 int e2fsck_reconnect_file(e2fsck_t ctx
, ext2_ino_t ino
)
593 ext2_filsys fs
= ctx
->fs
;
596 struct problem_context pctx
;
597 struct ext2_inode inode
;
600 clear_problem_context(&pctx
);
603 if (!ctx
->bad_lost_and_found
&& !ctx
->lost_and_found
) {
604 if (e2fsck_get_lost_and_found(ctx
, 1) == 0)
605 ctx
->bad_lost_and_found
++;
607 if (ctx
->bad_lost_and_found
) {
608 fix_problem(ctx
, PR_3_NO_LPF
, &pctx
);
612 sprintf(name
, "#%u", ino
);
613 if (ext2fs_read_inode(fs
, ino
, &inode
) == 0)
614 file_type
= ext2_file_type(inode
.i_mode
);
615 retval
= ext2fs_link(fs
, ctx
->lost_and_found
, name
, ino
, file_type
);
616 if (retval
== EXT2_ET_DIR_NO_SPACE
) {
617 if (!fix_problem(ctx
, PR_3_EXPAND_LF_DIR
, &pctx
))
619 retval
= e2fsck_expand_directory(ctx
, ctx
->lost_and_found
,
622 pctx
.errcode
= retval
;
623 fix_problem(ctx
, PR_3_CANT_EXPAND_LPF
, &pctx
);
626 retval
= ext2fs_link(fs
, ctx
->lost_and_found
, name
,
630 pctx
.errcode
= retval
;
631 fix_problem(ctx
, PR_3_CANT_RECONNECT
, &pctx
);
634 e2fsck_adjust_inode_count(ctx
, ino
, 1);
640 * Utility routine to adjust the inode counts on an inode.
642 errcode_t
e2fsck_adjust_inode_count(e2fsck_t ctx
, ext2_ino_t ino
, int adj
)
644 ext2_filsys fs
= ctx
->fs
;
646 struct ext2_inode inode
;
651 retval
= ext2fs_read_inode(fs
, ino
, &inode
);
656 printf("Adjusting link count for inode %lu by %d (from %d)\n", ino
, adj
,
657 inode
.i_links_count
);
661 ext2fs_icount_increment(ctx
->inode_count
, ino
, 0);
662 if (inode
.i_links_count
== (__u16
) ~0)
664 ext2fs_icount_increment(ctx
->inode_link_info
, ino
, 0);
665 inode
.i_links_count
++;
666 } else if (adj
== -1) {
667 ext2fs_icount_decrement(ctx
->inode_count
, ino
, 0);
668 if (inode
.i_links_count
== 0)
670 ext2fs_icount_decrement(ctx
->inode_link_info
, ino
, 0);
671 inode
.i_links_count
--;
674 retval
= ext2fs_write_inode(fs
, ino
, &inode
);
682 * Fix parent --- this routine fixes up the parent of a directory.
684 struct fix_dotdot_struct
{
691 static int fix_dotdot_proc(struct ext2_dir_entry
*dirent
,
692 int offset
EXT2FS_ATTR((unused
)),
693 int blocksize
EXT2FS_ATTR((unused
)),
694 char *buf
EXT2FS_ATTR((unused
)),
697 struct fix_dotdot_struct
*fp
= (struct fix_dotdot_struct
*) priv_data
;
699 struct problem_context pctx
;
701 if (ext2fs_dirent_name_len(dirent
) != 2)
703 if (strncmp(dirent
->name
, "..", 2))
706 clear_problem_context(&pctx
);
708 retval
= e2fsck_adjust_inode_count(fp
->ctx
, dirent
->inode
, -1);
710 pctx
.errcode
= retval
;
711 fix_problem(fp
->ctx
, PR_3_ADJUST_INODE
, &pctx
);
713 retval
= e2fsck_adjust_inode_count(fp
->ctx
, fp
->parent
, 1);
715 pctx
.errcode
= retval
;
716 fix_problem(fp
->ctx
, PR_3_ADJUST_INODE
, &pctx
);
718 dirent
->inode
= fp
->parent
;
719 if (fp
->ctx
->fs
->super
->s_feature_incompat
&
720 EXT2_FEATURE_INCOMPAT_FILETYPE
)
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 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(fs
, dir
, &inode
);
896 sz
= (es
.last_block
+ 1) * fs
->blocksize
;
897 retval
= ext2fs_inode_size_set(fs
, &inode
, sz
);
900 ext2fs_iblk_add_blocks(fs
, &inode
, es
.newblocks
);
901 quota_data_add(ctx
->qctx
, &inode
, dir
, es
.newblocks
* fs
->blocksize
);
903 e2fsck_write_inode(ctx
, dir
, &inode
, "expand_directory");