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
);
454 pctx
.errcode
= retval
;
455 fix_problem(ctx
, PR_3_ERR_LPF_NEW_BLOCK
, &pctx
);
458 ext2fs_mark_block_bitmap2(ctx
->block_found_map
, blk
);
460 ext2fs_block_alloc_stats2(fs
, blk
, +1);
463 * Next find a free inode.
465 retval
= ext2fs_new_inode(fs
, EXT2_ROOT_INO
, 040700,
466 ctx
->inode_used_map
, &ino
);
468 pctx
.errcode
= retval
;
469 fix_problem(ctx
, PR_3_ERR_LPF_NEW_INODE
, &pctx
);
472 ext2fs_mark_inode_bitmap2(ctx
->inode_used_map
, ino
);
473 ext2fs_mark_inode_bitmap2(ctx
->inode_dir_map
, ino
);
474 ext2fs_inode_alloc_stats2(fs
, ino
, +1, 1);
477 * Set up the inode structure
479 memset(&inode
, 0, sizeof(inode
));
480 inode
.i_mode
= 040700;
481 inode
.i_size
= fs
->blocksize
;
482 inode
.i_atime
= inode
.i_ctime
= inode
.i_mtime
= ctx
->now
;
483 inode
.i_links_count
= 2;
484 ext2fs_iblk_set(fs
, &inode
, 1);
485 inode
.i_block
[0] = blk
;
488 * Next, write out the inode.
490 pctx
.errcode
= ext2fs_write_new_inode(fs
, ino
, &inode
);
492 pctx
.str
= "ext2fs_write_inode";
493 fix_problem(ctx
, PR_3_CREATE_LPF_ERROR
, &pctx
);
498 * Now let's create the actual data block for the inode.
499 * Due to metadata_csum, the directory block MUST be written
500 * after the inode is written to disk!
502 retval
= ext2fs_new_dir_block(fs
, ino
, EXT2_ROOT_INO
, &block
);
504 pctx
.errcode
= retval
;
505 fix_problem(ctx
, PR_3_ERR_LPF_NEW_DIR_BLOCK
, &pctx
);
509 retval
= ext2fs_write_dir_block4(fs
, blk
, block
, 0, ino
);
510 ext2fs_free_mem(&block
);
512 pctx
.errcode
= retval
;
513 fix_problem(ctx
, PR_3_ERR_LPF_WRITE_BLOCK
, &pctx
);
518 * Finally, create the directory link
520 pctx
.errcode
= ext2fs_link(fs
, EXT2_ROOT_INO
, name
, ino
, EXT2_FT_DIR
);
522 pctx
.str
= "ext2fs_link";
523 fix_problem(ctx
, PR_3_CREATE_LPF_ERROR
, &pctx
);
528 * Miscellaneous bookkeeping that needs to be kept straight.
530 e2fsck_add_dir_info(ctx
, ino
, EXT2_ROOT_INO
);
531 e2fsck_adjust_inode_count(ctx
, EXT2_ROOT_INO
, 1);
532 ext2fs_icount_store(ctx
->inode_count
, ino
, 2);
533 ext2fs_icount_store(ctx
->inode_link_info
, ino
, 2);
534 ctx
->lost_and_found
= ino
;
535 quota_data_add(ctx
->qctx
, &inode
, ino
, fs
->blocksize
);
536 quota_data_inodes(ctx
->qctx
, &inode
, ino
, +1);
538 printf("/lost+found created; inode #%lu\n", ino
);
544 * This routine will connect a file to lost+found
546 int e2fsck_reconnect_file(e2fsck_t ctx
, ext2_ino_t ino
)
548 ext2_filsys fs
= ctx
->fs
;
551 struct problem_context pctx
;
552 struct ext2_inode inode
;
555 clear_problem_context(&pctx
);
558 if (!ctx
->bad_lost_and_found
&& !ctx
->lost_and_found
) {
559 if (e2fsck_get_lost_and_found(ctx
, 1) == 0)
560 ctx
->bad_lost_and_found
++;
562 if (ctx
->bad_lost_and_found
) {
563 fix_problem(ctx
, PR_3_NO_LPF
, &pctx
);
567 sprintf(name
, "#%u", ino
);
568 if (ext2fs_read_inode(fs
, ino
, &inode
) == 0)
569 file_type
= ext2_file_type(inode
.i_mode
);
570 retval
= ext2fs_link(fs
, ctx
->lost_and_found
, name
, ino
, file_type
);
571 if (retval
== EXT2_ET_DIR_NO_SPACE
) {
572 if (!fix_problem(ctx
, PR_3_EXPAND_LF_DIR
, &pctx
))
574 retval
= e2fsck_expand_directory(ctx
, ctx
->lost_and_found
,
577 pctx
.errcode
= retval
;
578 fix_problem(ctx
, PR_3_CANT_EXPAND_LPF
, &pctx
);
581 retval
= ext2fs_link(fs
, ctx
->lost_and_found
, name
,
585 pctx
.errcode
= retval
;
586 fix_problem(ctx
, PR_3_CANT_RECONNECT
, &pctx
);
589 e2fsck_adjust_inode_count(ctx
, ino
, 1);
595 * Utility routine to adjust the inode counts on an inode.
597 errcode_t
e2fsck_adjust_inode_count(e2fsck_t ctx
, ext2_ino_t ino
, int adj
)
599 ext2_filsys fs
= ctx
->fs
;
601 struct ext2_inode inode
;
606 retval
= ext2fs_read_inode(fs
, ino
, &inode
);
611 printf("Adjusting link count for inode %lu by %d (from %d)\n", ino
, adj
,
612 inode
.i_links_count
);
616 ext2fs_icount_increment(ctx
->inode_count
, ino
, 0);
617 if (inode
.i_links_count
== (__u16
) ~0)
619 ext2fs_icount_increment(ctx
->inode_link_info
, ino
, 0);
620 inode
.i_links_count
++;
621 } else if (adj
== -1) {
622 ext2fs_icount_decrement(ctx
->inode_count
, ino
, 0);
623 if (inode
.i_links_count
== 0)
625 ext2fs_icount_decrement(ctx
->inode_link_info
, ino
, 0);
626 inode
.i_links_count
--;
629 retval
= ext2fs_write_inode(fs
, ino
, &inode
);
637 * Fix parent --- this routine fixes up the parent of a directory.
639 struct fix_dotdot_struct
{
646 static int fix_dotdot_proc(struct ext2_dir_entry
*dirent
,
647 int offset
EXT2FS_ATTR((unused
)),
648 int blocksize
EXT2FS_ATTR((unused
)),
649 char *buf
EXT2FS_ATTR((unused
)),
652 struct fix_dotdot_struct
*fp
= (struct fix_dotdot_struct
*) priv_data
;
654 struct problem_context pctx
;
656 if (ext2fs_dirent_name_len(dirent
) != 2)
658 if (strncmp(dirent
->name
, "..", 2))
661 clear_problem_context(&pctx
);
663 retval
= e2fsck_adjust_inode_count(fp
->ctx
, dirent
->inode
, -1);
665 pctx
.errcode
= retval
;
666 fix_problem(fp
->ctx
, PR_3_ADJUST_INODE
, &pctx
);
668 retval
= e2fsck_adjust_inode_count(fp
->ctx
, fp
->parent
, 1);
670 pctx
.errcode
= retval
;
671 fix_problem(fp
->ctx
, PR_3_ADJUST_INODE
, &pctx
);
673 dirent
->inode
= fp
->parent
;
674 if (fp
->ctx
->fs
->super
->s_feature_incompat
&
675 EXT2_FEATURE_INCOMPAT_FILETYPE
)
676 ext2fs_dirent_set_file_type(dirent
, EXT2_FT_DIR
);
678 ext2fs_dirent_set_file_type(dirent
, EXT2_FT_UNKNOWN
);
681 return DIRENT_ABORT
| DIRENT_CHANGED
;
684 static void fix_dotdot(e2fsck_t ctx
, ext2_ino_t ino
, ext2_ino_t parent
)
686 ext2_filsys fs
= ctx
->fs
;
688 struct fix_dotdot_struct fp
;
689 struct problem_context pctx
;
697 printf("Fixing '..' of inode %lu to be %lu...\n", ino
, parent
);
700 clear_problem_context(&pctx
);
702 if (e2fsck_dir_will_be_rehashed(ctx
, ino
))
703 ctx
->fs
->flags
|= EXT2_FLAG_IGNORE_CSUM_ERRORS
;
704 retval
= ext2fs_dir_iterate(fs
, ino
, DIRENT_FLAG_INCLUDE_EMPTY
,
705 0, fix_dotdot_proc
, &fp
);
706 if (e2fsck_dir_will_be_rehashed(ctx
, ino
))
707 ctx
->fs
->flags
&= ~EXT2_FLAG_IGNORE_CSUM_ERRORS
;
708 if (retval
|| !fp
.done
) {
709 pctx
.errcode
= retval
;
710 fix_problem(ctx
, retval
? PR_3_FIX_PARENT_ERR
:
711 PR_3_FIX_PARENT_NOFIND
, &pctx
);
712 ext2fs_unmark_valid(fs
);
714 (void) e2fsck_dir_info_set_dotdot(ctx
, ino
, parent
);
715 if (e2fsck_dir_info_set_parent(ctx
, ino
, ctx
->lost_and_found
))
716 fix_problem(ctx
, PR_3_NO_DIRINFO
, &pctx
);
722 * These routines are responsible for expanding a /lost+found if it is
726 struct expand_dir_struct
{
728 e2_blkcnt_t guaranteed_size
;
736 static int expand_dir_proc(ext2_filsys fs
,
738 e2_blkcnt_t blockcnt
,
739 blk64_t ref_block
EXT2FS_ATTR((unused
)),
740 int ref_offset
EXT2FS_ATTR((unused
)),
743 struct expand_dir_struct
*es
= (struct expand_dir_struct
*) priv_data
;
745 static blk64_t last_blk
= 0;
752 if (es
->guaranteed_size
&& blockcnt
>= es
->guaranteed_size
)
756 es
->last_block
= blockcnt
;
763 (EXT2FS_B2C(fs
, last_blk
) == EXT2FS_B2C(fs
, last_blk
+ 1)))
764 new_blk
= last_blk
+ 1;
766 last_blk
&= ~EXT2FS_CLUSTER_MASK(fs
);
767 retval
= ext2fs_new_block2(fs
, last_blk
, ctx
->block_found_map
,
774 ext2fs_block_alloc_stats2(fs
, new_blk
, +1);
779 retval
= ext2fs_new_dir_block(fs
, 0, 0, &block
);
785 retval
= ext2fs_write_dir_block4(fs
, new_blk
, block
, 0,
788 retval
= ext2fs_get_mem(fs
->blocksize
, &block
);
793 memset(block
, 0, fs
->blocksize
);
794 retval
= io_channel_write_blk64(fs
->io
, new_blk
, 1, block
);
800 ext2fs_free_mem(&block
);
802 ext2fs_mark_block_bitmap2(ctx
->block_found_map
, new_blk
);
805 return (BLOCK_CHANGED
| BLOCK_ABORT
);
807 return BLOCK_CHANGED
;
810 errcode_t
e2fsck_expand_directory(e2fsck_t ctx
, ext2_ino_t dir
,
811 int num
, int guaranteed_size
)
813 ext2_filsys fs
= ctx
->fs
;
815 struct expand_dir_struct es
;
816 struct ext2_inode inode
;
817 blk64_t sz
, before
, after
;
819 if (!(fs
->flags
& EXT2_FLAG_RW
))
820 return EXT2_ET_RO_FILSYS
;
823 * Read the inode and block bitmaps in; we'll be messing with
826 e2fsck_read_bitmaps(ctx
);
828 retval
= ext2fs_check_directory(fs
, dir
);
833 es
.guaranteed_size
= guaranteed_size
;
840 retval
= ext2fs_block_iterate3(fs
, dir
, BLOCK_FLAG_APPEND
,
841 0, expand_dir_proc
, &es
);
847 * Update the size and block count fields in the inode.
849 retval
= ext2fs_read_inode(fs
, dir
, &inode
);
853 sz
= (es
.last_block
+ 1) * fs
->blocksize
;
854 retval
= ext2fs_inode_size_set(fs
, &inode
, sz
);
857 ext2fs_iblk_add_blocks(fs
, &inode
, es
.newblocks
);
858 quota_data_add(ctx
->qctx
, &inode
, dir
, es
.newblocks
* fs
->blocksize
);
860 e2fsck_write_inode(ctx
, dir
, &inode
, "expand_directory");