2 * pass1b.c --- Pass #1b of e2fsck
4 * This file contains pass1B, pass1C, and pass1D of e2fsck. They are
5 * only invoked if pass 1 discovered blocks which are in use by more
8 * Pass1B scans the data blocks of all the inodes again, generating a
9 * complete list of duplicate blocks and which inodes have claimed
12 * Pass1C does a tree-traversal of the filesystem, to determine the
13 * parent directories of these inodes. This step is necessary so that
14 * e2fsck can print out the pathnames of affected inodes.
16 * Pass1D is a reconciliation pass. For each inode with duplicate
17 * blocks, the user is prompted if s/he would like to clone the file
18 * (so that the file gets a fresh copy of the duplicated blocks) or
19 * simply to delete the file.
21 * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
24 * This file may be redistributed under the terms of the GNU Public
36 #ifdef HAVE_INTTYPES_H
41 typedef long intptr_t;
44 /* Needed for architectures where sizeof(int) != sizeof(void *) */
45 #define INT_TO_VOIDPTR(val) ((void *)(intptr_t)(val))
46 #define VOIDPTR_TO_INT(ptr) ((int)(intptr_t)(ptr))
48 #include <et/com_err.h>
52 #include "support/dict.h"
54 /* Define an extension to the ext2 library's block count information */
55 #define BLOCK_COUNT_EXTATTR (-5)
59 struct cluster_el
*next
;
64 struct inode_el
*next
;
69 struct inode_el
*inode_list
;
73 * This structure stores information about a particular inode which
74 * is sharing blocks with other inodes. This information is collected
75 * to display to the user, so that the user knows what files he or she
76 * is dealing with, when trying to decide how to resolve the conflict
77 * of multiply-claimed blocks.
82 struct ext2_inode_large inode
;
83 struct cluster_el
*cluster_list
;
86 static int process_pass1b_block(ext2_filsys fs
, blk64_t
*blocknr
,
87 e2_blkcnt_t blockcnt
, blk64_t ref_blk
,
88 int ref_offset
, void *priv_data
);
89 static void delete_file(e2fsck_t ctx
, ext2_ino_t ino
,
90 struct dup_inode
*dp
, char *block_buf
);
91 static errcode_t
clone_file(e2fsck_t ctx
, ext2_ino_t ino
,
92 struct dup_inode
*dp
, char* block_buf
);
93 static int check_if_fs_block(e2fsck_t ctx
, blk64_t block
);
94 static int check_if_fs_cluster(e2fsck_t ctx
, blk64_t cluster
);
96 static void pass1b(e2fsck_t ctx
, char *block_buf
);
97 static void pass1c(e2fsck_t ctx
, char *block_buf
);
98 static void pass1d(e2fsck_t ctx
, char *block_buf
);
100 static int dup_inode_count
= 0;
101 static int dup_inode_founddir
= 0;
103 static dict_t clstr_dict
, ino_dict
;
105 static ext2fs_inode_bitmap inode_dup_map
;
107 static int dict_int_cmp(const void *cmp_ctx
EXT2FS_ATTR((unused
)),
108 const void *a
, const void *b
)
119 * Add a duplicate block record
121 static void add_dupe(e2fsck_t ctx
, ext2_ino_t ino
, blk64_t cluster
,
122 struct ext2_inode_large
*inode
)
125 struct dup_cluster
*db
;
126 struct dup_inode
*di
;
127 struct cluster_el
*cluster_el
;
128 struct inode_el
*ino_el
;
130 n
= dict_lookup(&clstr_dict
, INT_TO_VOIDPTR(cluster
));
132 db
= (struct dup_cluster
*) dnode_get(n
);
134 db
= (struct dup_cluster
*) e2fsck_allocate_memory(ctx
,
135 sizeof(struct dup_cluster
), "duplicate cluster header");
138 dict_alloc_insert(&clstr_dict
, INT_TO_VOIDPTR(cluster
), db
);
140 ino_el
= (struct inode_el
*) e2fsck_allocate_memory(ctx
,
141 sizeof(struct inode_el
), "inode element");
143 ino_el
->next
= db
->inode_list
;
144 db
->inode_list
= ino_el
;
147 n
= dict_lookup(&ino_dict
, INT_TO_VOIDPTR(ino
));
149 di
= (struct dup_inode
*) dnode_get(n
);
151 di
= (struct dup_inode
*) e2fsck_allocate_memory(ctx
,
152 sizeof(struct dup_inode
), "duplicate inode header");
153 if (ino
== EXT2_ROOT_INO
) {
154 di
->dir
= EXT2_ROOT_INO
;
155 dup_inode_founddir
++;
159 di
->num_dupblocks
= 0;
160 di
->cluster_list
= 0;
162 dict_alloc_insert(&ino_dict
, INT_TO_VOIDPTR(ino
), di
);
164 cluster_el
= (struct cluster_el
*) e2fsck_allocate_memory(ctx
,
165 sizeof(struct cluster_el
), "cluster element");
166 cluster_el
->cluster
= cluster
;
167 cluster_el
->next
= di
->cluster_list
;
168 di
->cluster_list
= cluster_el
;
173 * Free a duplicate inode record
175 static void inode_dnode_free(dnode_t
*node
,
176 void *context
EXT2FS_ATTR((unused
)))
178 struct dup_inode
*di
;
179 struct cluster_el
*p
, *next
;
181 di
= (struct dup_inode
*) dnode_get(node
);
182 for (p
= di
->cluster_list
; p
; p
= next
) {
186 ext2fs_free_mem(&di
);
187 ext2fs_free_mem(&node
);
191 * Free a duplicate cluster record
193 static void cluster_dnode_free(dnode_t
*node
,
194 void *context
EXT2FS_ATTR((unused
)))
196 struct dup_cluster
*dc
;
197 struct inode_el
*p
, *next
;
199 dc
= (struct dup_cluster
*) dnode_get(node
);
200 for (p
= dc
->inode_list
; p
; p
= next
) {
204 ext2fs_free_mem(&dc
);
205 ext2fs_free_mem(&node
);
210 * Main procedure for handling duplicate blocks
212 void e2fsck_pass1_dupblocks(e2fsck_t ctx
, char *block_buf
)
214 ext2_filsys fs
= ctx
->fs
;
215 struct problem_context pctx
;
216 #ifdef RESOURCE_TRACK
217 struct resource_track rtrack
;
220 clear_problem_context(&pctx
);
222 pctx
.errcode
= e2fsck_allocate_inode_bitmap(fs
,
223 _("multiply claimed inode map"),
224 EXT2FS_BMAP64_RBTREE
, "inode_dup_map",
227 fix_problem(ctx
, PR_1B_ALLOCATE_IBITMAP_ERROR
, &pctx
);
228 ctx
->flags
|= E2F_FLAG_ABORT
;
232 dict_init(&ino_dict
, DICTCOUNT_T_MAX
, dict_int_cmp
);
233 dict_init(&clstr_dict
, DICTCOUNT_T_MAX
, dict_int_cmp
);
234 dict_set_allocator(&ino_dict
, NULL
, inode_dnode_free
, NULL
);
235 dict_set_allocator(&clstr_dict
, NULL
, cluster_dnode_free
, NULL
);
237 init_resource_track(&rtrack
, ctx
->fs
->io
);
238 pass1b(ctx
, block_buf
);
239 print_resource_track(ctx
, "Pass 1b", &rtrack
, ctx
->fs
->io
);
241 init_resource_track(&rtrack
, ctx
->fs
->io
);
242 pass1c(ctx
, block_buf
);
243 print_resource_track(ctx
, "Pass 1c", &rtrack
, ctx
->fs
->io
);
245 init_resource_track(&rtrack
, ctx
->fs
->io
);
246 pass1d(ctx
, block_buf
);
247 print_resource_track(ctx
, "Pass 1d", &rtrack
, ctx
->fs
->io
);
249 if (ext2fs_has_feature_shared_blocks(ctx
->fs
->super
) &&
250 (ctx
->options
& E2F_OPT_UNSHARE_BLOCKS
)) {
252 * If we successfully managed to unshare all blocks, unset the
253 * shared block feature.
256 int result
= ext2fs_find_first_set_block_bitmap2(
258 ctx
->fs
->super
->s_first_data_block
,
259 ext2fs_blocks_count(ctx
->fs
->super
) - 1,
261 if (result
== ENOENT
&& !(ctx
->options
& E2F_OPT_NO
)) {
262 ext2fs_clear_feature_shared_blocks(ctx
->fs
->super
);
263 ext2fs_mark_super_dirty(ctx
->fs
);
268 * Time to free all of the accumulated data structures that we
269 * don't need anymore.
271 dict_free_nodes(&ino_dict
);
272 dict_free_nodes(&clstr_dict
);
273 ext2fs_free_inode_bitmap(inode_dup_map
);
277 * Scan the inodes looking for inodes that contain duplicate blocks.
279 struct process_block_struct
{
283 blk64_t cur_cluster
, phys_cluster
;
285 struct ext2_inode_large
*inode
;
286 struct problem_context
*pctx
;
289 static void pass1b(e2fsck_t ctx
, char *block_buf
)
291 ext2_filsys fs
= ctx
->fs
;
293 struct ext2_inode_large inode
;
294 ext2_inode_scan scan
;
295 struct process_block_struct pb
;
296 struct problem_context pctx
;
299 clear_problem_context(&pctx
);
301 if (!(ctx
->options
& E2F_OPT_PREEN
))
302 fix_problem(ctx
, PR_1B_PASS_HEADER
, &pctx
);
303 pctx
.errcode
= ext2fs_open_inode_scan(fs
, ctx
->inode_buffer_blocks
,
306 fix_problem(ctx
, PR_1B_ISCAN_ERROR
, &pctx
);
307 ctx
->flags
|= E2F_FLAG_ABORT
;
310 ctx
->stashed_inode
= EXT2_INODE(&inode
);
315 if (ino
% (fs
->super
->s_inodes_per_group
* 4) == 1) {
316 if (e2fsck_mmp_update(fs
))
319 pctx
.errcode
= ext2fs_get_next_inode_full(scan
, &ino
,
320 EXT2_INODE(&inode
), sizeof(inode
));
321 if (pctx
.errcode
== EXT2_ET_BAD_BLOCK_IN_INODE_TABLE
)
325 fix_problem(ctx
, PR_1B_ISCAN_ERROR
, &pctx
);
326 ctx
->flags
|= E2F_FLAG_ABORT
;
331 pctx
.ino
= ctx
->stashed_ino
= ino
;
332 if ((ino
!= EXT2_BAD_INO
) &&
333 !ext2fs_test_inode_bitmap2(ctx
->inode_used_map
, ino
))
340 pb
.phys_cluster
= ~0;
342 pb
.pctx
->blk
= pb
.pctx
->blk2
= 0;
344 if (ext2fs_inode_has_valid_blocks2(fs
, EXT2_INODE(&inode
)) ||
345 (ino
== EXT2_BAD_INO
))
346 pctx
.errcode
= ext2fs_block_iterate3(fs
, ino
,
347 BLOCK_FLAG_READ_ONLY
, block_buf
,
348 process_pass1b_block
, &pb
);
349 /* If the feature is not set, attrs will be cleared later anyway */
350 if (ext2fs_has_feature_xattr(fs
->super
) &&
351 ext2fs_file_acl_block(fs
, EXT2_INODE(&inode
))) {
352 blk64_t blk
= ext2fs_file_acl_block(fs
, EXT2_INODE(&inode
));
353 process_pass1b_block(fs
, &blk
,
354 BLOCK_COUNT_EXTATTR
, 0, 0, &pb
);
355 ext2fs_file_acl_block_set(fs
, EXT2_INODE(&inode
), blk
);
358 if (ino
!= EXT2_BAD_INO
) {
359 op
= pctx
.blk
== pctx
.blk2
?
360 PR_1B_DUP_BLOCK
: PR_1B_DUP_RANGE
;
361 fix_problem(ctx
, op
, pb
.pctx
);
363 end_problem_latch(ctx
, PR_LATCH_DBLOCK
);
364 if (ino
>= EXT2_FIRST_INODE(fs
->super
) ||
365 ino
== EXT2_ROOT_INO
)
369 fix_problem(ctx
, PR_1B_BLOCK_ITERATE
, &pctx
);
371 ext2fs_close_inode_scan(scan
);
372 e2fsck_use_inode_shortcuts(ctx
, 0);
375 static int process_pass1b_block(ext2_filsys fs
EXT2FS_ATTR((unused
)),
377 e2_blkcnt_t blockcnt
,
378 blk64_t ref_blk
EXT2FS_ATTR((unused
)),
379 int ref_offset
EXT2FS_ATTR((unused
)),
382 struct process_block_struct
*p
;
389 p
= (struct process_block_struct
*) priv_data
;
391 lc
= EXT2FS_B2C(fs
, blockcnt
);
392 pc
= EXT2FS_B2C(fs
, *block_nr
);
394 if (!ext2fs_test_block_bitmap2(ctx
->block_dup_map
, *block_nr
))
397 /* OK, this is a duplicate block */
398 if (p
->ino
!= EXT2_BAD_INO
) {
399 if (p
->last_blk
+ 1 != *block_nr
) {
401 op
= p
->pctx
->blk
== p
->pctx
->blk2
?
404 fix_problem(ctx
, op
, p
->pctx
);
406 p
->pctx
->blk
= *block_nr
;
408 p
->pctx
->blk2
= *block_nr
;
409 p
->last_blk
= *block_nr
;
412 ext2fs_mark_inode_bitmap2(inode_dup_map
, p
->ino
);
415 * Qualifications for submitting a block for duplicate processing:
416 * It's an extent/indirect block (and has a negative logical offset);
417 * we've crossed a logical cluster boundary; or the physical cluster
418 * suddenly changed, which indicates that blocks in a logical cluster
419 * are mapped to multiple physical clusters.
421 if (blockcnt
< 0 || lc
!= p
->cur_cluster
|| pc
!= p
->phys_cluster
)
422 add_dupe(ctx
, p
->ino
, EXT2FS_B2C(fs
, *block_nr
), p
->inode
);
426 p
->phys_cluster
= pc
;
431 * Pass 1c: Scan directories for inodes with duplicate blocks. This
432 * is used so that we can print pathnames when prompting the user for
435 struct search_dir_struct
{
437 ext2_ino_t first_inode
;
438 ext2_ino_t max_inode
;
441 static int search_dirent_proc(ext2_ino_t dir
, int entry
,
442 struct ext2_dir_entry
*dirent
,
443 int offset
EXT2FS_ATTR((unused
)),
444 int blocksize
EXT2FS_ATTR((unused
)),
445 char *buf
EXT2FS_ATTR((unused
)),
448 struct search_dir_struct
*sd
;
452 sd
= (struct search_dir_struct
*) priv_data
;
454 if (dirent
->inode
> sd
->max_inode
)
455 /* Should abort this inode, but not everything */
458 if ((dirent
->inode
< sd
->first_inode
) || (entry
< DIRENT_OTHER_FILE
) ||
459 !ext2fs_test_inode_bitmap2(inode_dup_map
, dirent
->inode
))
462 n
= dict_lookup(&ino_dict
, INT_TO_VOIDPTR(dirent
->inode
));
465 p
= (struct dup_inode
*) dnode_get(n
);
471 return(sd
->count
? 0 : DIRENT_ABORT
);
475 static void pass1c(e2fsck_t ctx
, char *block_buf
)
477 ext2_filsys fs
= ctx
->fs
;
478 struct search_dir_struct sd
;
479 struct problem_context pctx
;
481 clear_problem_context(&pctx
);
483 if (!(ctx
->options
& E2F_OPT_PREEN
))
484 fix_problem(ctx
, PR_1C_PASS_HEADER
, &pctx
);
487 * Search through all directories to translate inodes to names
488 * (by searching for the containing directory for that inode.)
490 sd
.count
= dup_inode_count
- dup_inode_founddir
;
491 sd
.first_inode
= EXT2_FIRST_INODE(fs
->super
);
492 sd
.max_inode
= fs
->super
->s_inodes_count
;
493 ext2fs_dblist_dir_iterate(fs
->dblist
, 0, block_buf
,
494 search_dirent_proc
, &sd
);
497 static void pass1d(e2fsck_t ctx
, char *block_buf
)
499 ext2_filsys fs
= ctx
->fs
;
500 struct dup_inode
*p
, *t
;
501 struct dup_cluster
*q
;
502 ext2_ino_t
*shared
, ino
;
507 struct problem_context pctx
;
509 struct cluster_el
*s
;
512 clear_problem_context(&pctx
);
514 if (!(ctx
->options
& E2F_OPT_PREEN
))
515 fix_problem(ctx
, PR_1D_PASS_HEADER
, &pctx
);
516 e2fsck_read_bitmaps(ctx
);
518 pctx
.num
= dup_inode_count
; /* dict_count(&ino_dict); */
519 fix_problem(ctx
, PR_1D_NUM_DUP_INODES
, &pctx
);
520 shared
= (ext2_ino_t
*) e2fsck_allocate_memory(ctx
,
521 sizeof(ext2_ino_t
) * dict_count(&ino_dict
),
522 "Shared inode list");
523 for (n
= dict_first(&ino_dict
); n
; n
= dict_next(&ino_dict
, n
)) {
524 p
= (struct dup_inode
*) dnode_get(n
);
527 ino
= (ext2_ino_t
)VOIDPTR_TO_INT(dnode_getkey(n
));
528 if (ino
== EXT2_BAD_INO
|| ino
== EXT2_RESIZE_INO
)
532 * Find all of the inodes which share blocks with this
533 * one. First we find all of the duplicate blocks
534 * belonging to this inode, and then search each block
535 * get the list of inodes, and merge them together.
537 for (s
= p
->cluster_list
; s
; s
= s
->next
) {
538 m
= dict_lookup(&clstr_dict
,
539 INT_TO_VOIDPTR(s
->cluster
));
541 continue; /* Should never happen... */
542 q
= (struct dup_cluster
*) dnode_get(m
);
545 if (check_if_fs_cluster(ctx
, s
->cluster
)) {
551 * Add all inodes used by this block to the
552 * shared[] --- which is a unique list, so
553 * if an inode is already in shared[], don't
556 for (r
= q
->inode_list
; r
; r
= r
->next
) {
559 for (i
= 0; i
< shared_len
; i
++)
560 if (shared
[i
] == r
->inode
)
562 if (i
== shared_len
) {
563 shared
[shared_len
++] = r
->inode
;
569 * Report the inode that we are working on
571 pctx
.inode
= EXT2_INODE(&p
->inode
);
574 pctx
.blkcount
= p
->num_dupblocks
;
575 pctx
.num
= meta_data
? shared_len
+1 : shared_len
;
576 fix_problem(ctx
, PR_1D_DUP_FILE
, &pctx
);
581 fix_problem(ctx
, PR_1D_SHARE_METADATA
, &pctx
);
583 for (i
= 0; i
< shared_len
; i
++) {
584 m
= dict_lookup(&ino_dict
, INT_TO_VOIDPTR(shared
[i
]));
586 continue; /* should never happen */
587 t
= (struct dup_inode
*) dnode_get(m
);
589 * Report the inode that we are sharing with
591 pctx
.inode
= EXT2_INODE(&t
->inode
);
592 pctx
.ino
= shared
[i
];
594 fix_problem(ctx
, PR_1D_DUP_FILE_LIST
, &pctx
);
597 * Even if the file shares blocks with itself, we still need to
600 if (file_ok
&& (meta_data
? shared_len
+1 : shared_len
) != 0) {
601 fix_problem(ctx
, PR_1D_DUP_BLOCKS_DEALT
, &pctx
);
604 if ((ctx
->options
& E2F_OPT_UNSHARE_BLOCKS
) ||
605 fix_problem(ctx
, PR_1D_CLONE_QUESTION
, &pctx
)) {
606 pctx
.errcode
= clone_file(ctx
, ino
, p
, block_buf
);
608 fix_problem(ctx
, PR_1D_CLONE_ERROR
, &pctx
);
613 * Note: When unsharing blocks, we don't prompt to delete
614 * files. If the clone operation fails than the unshare
615 * operation should fail too.
617 if (!(ctx
->options
& E2F_OPT_UNSHARE_BLOCKS
) &&
618 fix_problem(ctx
, PR_1D_DELETE_QUESTION
, &pctx
))
619 delete_file(ctx
, ino
, p
, block_buf
);
621 ext2fs_unmark_valid(fs
);
623 ext2fs_free_mem(&shared
);
627 * Drop the refcount on the dup_block structure, and clear the entry
628 * in the block_dup_map if appropriate.
630 static void decrement_badcount(e2fsck_t ctx
, blk64_t block
,
631 struct dup_cluster
*p
)
634 if (p
->num_bad
<= 0 ||
635 (p
->num_bad
== 1 && !check_if_fs_block(ctx
, block
))) {
636 if (check_if_fs_cluster(ctx
, EXT2FS_B2C(ctx
->fs
, block
)))
638 ext2fs_unmark_block_bitmap2(ctx
->block_dup_map
, block
);
642 static int delete_file_block(ext2_filsys fs
,
644 e2_blkcnt_t blockcnt
,
645 blk64_t ref_block
EXT2FS_ATTR((unused
)),
646 int ref_offset
EXT2FS_ATTR((unused
)),
649 struct process_block_struct
*pb
;
650 struct dup_cluster
*p
;
655 pb
= (struct process_block_struct
*) priv_data
;
661 c
= EXT2FS_B2C(fs
, *block_nr
);
662 lc
= EXT2FS_B2C(fs
, blockcnt
);
663 if (ext2fs_test_block_bitmap2(ctx
->block_dup_map
, *block_nr
)) {
664 n
= dict_lookup(&clstr_dict
, INT_TO_VOIDPTR(c
));
666 if (lc
!= pb
->cur_cluster
) {
667 p
= (struct dup_cluster
*) dnode_get(n
);
668 decrement_badcount(ctx
, *block_nr
, p
);
672 com_err("delete_file_block", 0,
673 _("internal error: can't find dup_blk for %llu\n"),
674 (unsigned long long) *block_nr
);
676 if ((*block_nr
% EXT2FS_CLUSTER_RATIO(ctx
->fs
)) == 0)
677 ext2fs_block_alloc_stats2(fs
, *block_nr
, -1);
680 pb
->cur_cluster
= lc
;
685 static void delete_file(e2fsck_t ctx
, ext2_ino_t ino
,
686 struct dup_inode
*dp
, char* block_buf
)
688 ext2_filsys fs
= ctx
->fs
;
689 struct process_block_struct pb
;
690 struct problem_context pctx
;
693 clear_problem_context(&pctx
);
694 pctx
.ino
= pb
.ino
= ino
;
697 pctx
.str
= "delete_file";
700 if (ext2fs_inode_has_valid_blocks2(fs
, EXT2_INODE(&dp
->inode
)))
701 pctx
.errcode
= ext2fs_block_iterate3(fs
, ino
,
702 BLOCK_FLAG_READ_ONLY
,
704 delete_file_block
, &pb
);
706 fix_problem(ctx
, PR_1B_BLOCK_ITERATE
, &pctx
);
707 if (ctx
->inode_bad_map
)
708 ext2fs_unmark_inode_bitmap2(ctx
->inode_bad_map
, ino
);
709 if (ctx
->inode_reg_map
)
710 ext2fs_unmark_inode_bitmap2(ctx
->inode_reg_map
, ino
);
711 ext2fs_unmark_inode_bitmap2(ctx
->inode_dir_map
, ino
);
712 ext2fs_unmark_inode_bitmap2(ctx
->inode_used_map
, ino
);
713 ext2fs_inode_alloc_stats2(fs
, ino
, -1, LINUX_S_ISDIR(dp
->inode
.i_mode
));
714 quota_data_sub(ctx
->qctx
, &dp
->inode
, ino
,
715 pb
.dup_blocks
* fs
->blocksize
);
716 quota_data_inodes(ctx
->qctx
, &dp
->inode
, ino
, -1);
718 /* Inode may have changed by block_iterate, so reread it */
719 e2fsck_read_inode_full(ctx
, ino
, EXT2_INODE(&dp
->inode
),
720 sizeof(dp
->inode
), "delete_file");
721 e2fsck_clear_inode(ctx
, ino
, EXT2_INODE(&dp
->inode
), 0, "delete_file");
722 if (ext2fs_file_acl_block(fs
, EXT2_INODE(&dp
->inode
)) &&
723 ext2fs_has_feature_xattr(fs
->super
)) {
724 blk64_t file_acl_block
= ext2fs_file_acl_block(fs
,
725 EXT2_INODE(&dp
->inode
));
728 pctx
.errcode
= ext2fs_adjust_ea_refcount3(fs
, file_acl_block
,
729 block_buf
, -1, &count
, ino
);
730 if (pctx
.errcode
== EXT2_ET_BAD_EA_BLOCK_NUM
) {
735 pctx
.blk
= file_acl_block
;
736 fix_problem(ctx
, PR_1B_ADJ_EA_REFCOUNT
, &pctx
);
739 * If the count is zero, then arrange to have the
740 * block deleted. If the block is in the block_dup_map,
741 * also call delete_file_block since it will take care
742 * of keeping the accounting straight.
745 ext2fs_test_block_bitmap2(ctx
->block_dup_map
,
747 delete_file_block(fs
, &file_acl_block
,
748 BLOCK_COUNT_EXTATTR
, 0, 0, &pb
);
749 ext2fs_file_acl_block_set(fs
, EXT2_INODE(&dp
->inode
),
751 quota_data_sub(ctx
->qctx
, &dp
->inode
, ino
,
757 struct clone_struct
{
764 struct ext2_inode_large
*inode
;
766 struct dup_cluster
*save_dup_cluster
;
767 blk64_t save_blocknr
;
771 * Decrement the bad count *after* we've shown that (a) we can allocate a
772 * replacement block and (b) remap the file blocks. Unfortunately, there's no
773 * way to find out if the remap succeeded until either the next
774 * clone_file_block() call (an error when remapping the block after returning
775 * BLOCK_CHANGED will halt the iteration) or after block_iterate() returns.
776 * Otherwise, it's possible that we decrease the badcount once in preparation
777 * to remap, then the remap fails (either we can't find a replacement block or
778 * we have to split the extent tree and can't find a new extent block), so we
779 * delete the file, which decreases the badcount again.
781 static void deferred_dec_badcount(struct clone_struct
*cs
)
783 if (!cs
->save_dup_cluster
)
785 decrement_badcount(cs
->ctx
, cs
->save_blocknr
, cs
->save_dup_cluster
);
786 cs
->save_dup_cluster
= NULL
;
789 static int clone_file_block(ext2_filsys fs
,
791 e2_blkcnt_t blockcnt
,
792 blk64_t ref_block
EXT2FS_ATTR((unused
)),
793 int ref_offset
EXT2FS_ATTR((unused
)),
796 struct dup_cluster
*p
= NULL
;
799 struct clone_struct
*cs
= (struct clone_struct
*) priv_data
;
804 int should_write
= 1;
807 deferred_dec_badcount(cs
);
812 if (ext2fs_has_feature_shared_blocks(ctx
->fs
->super
) &&
813 (ctx
->options
& E2F_OPT_UNSHARE_BLOCKS
) &&
814 (ctx
->options
& E2F_OPT_NO
))
817 c
= EXT2FS_B2C(fs
, blockcnt
);
819 if (c
== cs
->dup_cluster
&& cs
->alloc_block
) {
820 new_block
= cs
->alloc_block
;
824 if (ext2fs_test_block_bitmap2(ctx
->block_dup_map
, *block_nr
)) {
825 n
= dict_lookup(&clstr_dict
,
826 INT_TO_VOIDPTR(EXT2FS_B2C(fs
, *block_nr
)));
828 com_err("clone_file_block", 0,
829 _("internal error: can't find dup_blk for %llu\n"),
830 (unsigned long long) *block_nr
);
834 p
= (struct dup_cluster
*) dnode_get(n
);
838 * Let's try an implied cluster allocation. If we get the same
839 * cluster back, then we need to find a new block; otherwise,
840 * we're merely fixing the problem of one logical cluster being
841 * mapped to multiple physical clusters.
844 retval
= ext2fs_map_cluster_block(fs
, cs
->ino
,
845 EXT2_INODE(cs
->inode
),
846 blockcnt
, &new_block
);
847 if (retval
== 0 && new_block
!= 0 &&
848 EXT2FS_B2C(ctx
->fs
, new_block
) !=
849 EXT2FS_B2C(ctx
->fs
, *block_nr
))
850 goto cluster_alloc_ok
;
851 retval
= ext2fs_new_block2(fs
, 0, ctx
->block_found_map
,
854 cs
->errcode
= retval
;
857 if (ext2fs_has_feature_shared_blocks(fs
->super
)) {
859 * Update the block stats so we don't get a prompt to fix block
860 * counts in the final pass.
862 ext2fs_block_alloc_stats2(fs
, new_block
, +1);
865 cs
->alloc_block
= new_block
;
868 new_block
&= ~EXT2FS_CLUSTER_MASK(fs
);
869 new_block
+= EXT2FS_CLUSTER_MASK(fs
) & blockcnt
;
870 if (cs
->dir
&& (blockcnt
>= 0)) {
871 retval
= ext2fs_set_dir_block2(fs
->dblist
,
872 cs
->dir
, new_block
, blockcnt
);
874 cs
->errcode
= retval
;
879 printf("Cloning block #%lld from %llu to %llu\n",
880 blockcnt
, (unsigned long long) *block_nr
,
881 (unsigned long long) new_block
);
883 retval
= io_channel_read_blk64(fs
->io
, *block_nr
, 1, cs
->buf
);
885 cs
->errcode
= retval
;
889 retval
= io_channel_write_blk64(fs
->io
, new_block
, 1, cs
->buf
);
891 cs
->errcode
= retval
;
895 if (check_if_fs_cluster(ctx
, EXT2FS_B2C(fs
, *block_nr
)))
897 cs
->save_dup_cluster
= (is_meta
? NULL
: p
);
898 cs
->save_blocknr
= *block_nr
;
899 *block_nr
= new_block
;
900 ext2fs_mark_block_bitmap2(ctx
->block_found_map
, new_block
);
901 ext2fs_mark_block_bitmap2(fs
->block_map
, new_block
);
904 /* Don't try to change extent information; we want e2fsck to
909 return BLOCK_CHANGED
;
914 static errcode_t
clone_file(e2fsck_t ctx
, ext2_ino_t ino
,
915 struct dup_inode
*dp
, char* block_buf
)
917 ext2_filsys fs
= ctx
->fs
;
919 struct clone_struct cs
;
920 struct problem_context pctx
;
921 blk64_t blk
, new_blk
;
923 struct inode_el
*ino_el
;
924 struct dup_cluster
*dc
;
925 struct dup_inode
*di
;
927 clear_problem_context(&pctx
);
934 cs
.inode
= &dp
->inode
;
935 cs
.save_dup_cluster
= NULL
;
937 retval
= ext2fs_get_mem(fs
->blocksize
, &cs
.buf
);
941 if (ext2fs_test_inode_bitmap2(ctx
->inode_dir_map
, ino
))
945 pctx
.str
= "clone_file";
946 if (ext2fs_inode_has_valid_blocks2(fs
, EXT2_INODE(&dp
->inode
)))
947 pctx
.errcode
= ext2fs_block_iterate3(fs
, ino
, 0, block_buf
,
948 clone_file_block
, &cs
);
949 deferred_dec_badcount(&cs
);
950 ext2fs_mark_bb_dirty(fs
);
952 fix_problem(ctx
, PR_1B_BLOCK_ITERATE
, &pctx
);
953 retval
= pctx
.errcode
;
957 com_err("clone_file", cs
.errcode
, "%s",
958 _("returned from clone_file_block"));
962 /* The inode may have changed on disk, so we have to re-read it */
963 e2fsck_read_inode_full(ctx
, ino
, EXT2_INODE(&dp
->inode
),
964 sizeof(dp
->inode
), "clone file EA");
965 blk
= ext2fs_file_acl_block(fs
, EXT2_INODE(&dp
->inode
));
967 if (blk
&& (clone_file_block(fs
, &new_blk
,
968 BLOCK_COUNT_EXTATTR
, 0, 0, &cs
) ==
970 ext2fs_file_acl_block_set(fs
, EXT2_INODE(&dp
->inode
), new_blk
);
971 e2fsck_write_inode_full(ctx
, ino
, EXT2_INODE(&dp
->inode
),
972 sizeof(dp
->inode
), "clone file EA");
974 * If we cloned the EA block, find all other inodes
975 * which referred to that EA block, and modify
976 * them to point to the new EA block.
978 n
= dict_lookup(&clstr_dict
,
979 INT_TO_VOIDPTR(EXT2FS_B2C(fs
, blk
)));
981 com_err("clone_file", 0,
982 _("internal error: couldn't lookup EA "
983 "block record for %llu"),
984 (unsigned long long) blk
);
985 retval
= 0; /* OK to stumble on... */
988 dc
= (struct dup_cluster
*) dnode_get(n
);
989 for (ino_el
= dc
->inode_list
; ino_el
; ino_el
= ino_el
->next
) {
990 if (ino_el
->inode
== ino
)
992 n
= dict_lookup(&ino_dict
, INT_TO_VOIDPTR(ino_el
->inode
));
994 com_err("clone_file", 0,
995 _("internal error: couldn't lookup EA "
996 "inode record for %u"),
998 retval
= 0; /* OK to stumble on... */
1001 di
= (struct dup_inode
*) dnode_get(n
);
1002 if (ext2fs_file_acl_block(fs
,
1003 EXT2_INODE(&di
->inode
)) == blk
) {
1004 ext2fs_file_acl_block_set(fs
,
1005 EXT2_INODE(&di
->inode
),
1006 ext2fs_file_acl_block(fs
, EXT2_INODE(&dp
->inode
)));
1007 e2fsck_write_inode_full(ctx
, ino_el
->inode
,
1008 EXT2_INODE(&di
->inode
),
1009 sizeof(di
->inode
), "clone file EA");
1010 decrement_badcount(ctx
, blk
, dc
);
1016 ext2fs_free_mem(&cs
.buf
);
1021 * This routine returns 1 if a block overlaps with one of the superblocks,
1022 * group descriptors, inode bitmaps, or block bitmaps.
1024 static int check_if_fs_block(e2fsck_t ctx
, blk64_t block
)
1026 return ext2fs_test_block_bitmap2(ctx
->block_metadata_map
, block
);
1030 * This routine returns 1 if a cluster overlaps with one of the superblocks,
1031 * group descriptors, inode bitmaps, or block bitmaps.
1033 static int check_if_fs_cluster(e2fsck_t ctx
, blk64_t cluster
)
1035 ext2_filsys fs
= ctx
->fs
;
1036 blk64_t block
= EXT2FS_C2B(fs
, cluster
);
1039 for (i
= 0; i
< EXT2FS_CLUSTER_RATIO(fs
); i
++) {
1040 if (ext2fs_test_block_bitmap2(ctx
->block_metadata_map
,