2 * Copyright (C) 2009 Oracle. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
19 #define _XOPEN_SOURCE 500
26 #include "kerncompat.h"
30 #include "print-tree.h"
31 #include "transaction.h"
36 #define FIELD_BUF_LEN 80
38 struct extent_buffer *debug_corrupt_block(struct btrfs_root *root, u64 bytenr,
39 u32 blocksize, u64 copy)
42 struct extent_buffer *eb;
44 struct btrfs_multi_bio *multi = NULL;
45 struct btrfs_device *device;
49 eb = btrfs_find_create_tree_block(root, bytenr, blocksize);
55 ret = btrfs_map_block(&root->fs_info->mapping_tree, READ,
56 eb->start, &length, &multi,
59 device = multi->stripes[0].dev;
62 eb->dev_bytenr = multi->stripes[0].physical;
65 "mirror %d logical %llu physical %llu device %s\n",
66 mirror_num, (unsigned long long)bytenr,
67 (unsigned long long)eb->dev_bytenr, device->name);
70 if (!copy || mirror_num == copy) {
71 ret = read_extent_from_disk(eb, 0, eb->len);
72 printf("corrupting %llu copy %d\n", eb->start,
74 memset(eb->data, 0, eb->len);
75 write_extent_to_disk(eb);
79 num_copies = btrfs_num_copies(&root->fs_info->mapping_tree,
85 if (mirror_num > num_copies)
91 static void print_usage(void)
93 fprintf(stderr, "usage: btrfs-corrupt-block [options] device\n");
94 fprintf(stderr, "\t-l Logical extent to be corrupted\n");
95 fprintf(stderr, "\t-c Copy of the extent to be corrupted"
96 " (usually 1 or 2, default: 0)\n");
97 fprintf(stderr, "\t-b Number of bytes to be corrupted\n");
98 fprintf(stderr, "\t-e Extent to be corrupted\n");
99 fprintf(stderr, "\t-E The whole extent tree to be corrupted\n");
100 fprintf(stderr, "\t-u Given chunk item to be corrupted\n");
101 fprintf(stderr, "\t-U The whole chunk tree to be corrupted\n");
102 fprintf(stderr, "\t-i The inode item to corrupt (must also specify "
103 "the field to corrupt)\n");
104 fprintf(stderr, "\t-x The file extent item to corrupt (must also "
105 "specify -i for the inode and -f for the field to corrupt)\n");
106 fprintf(stderr, "\t-m The metadata block to corrupt (must also "
107 "specify -f for the field to corrupt)\n");
108 fprintf(stderr, "\t-K The key to corrupt in the format "
109 "<num>,<num>,<num> (must also specify -f for the field)\n");
110 fprintf(stderr, "\t-f The field in the item to corrupt\n");
111 fprintf(stderr, "\t-I An item to corrupt (must also specify the field "
112 "to corrupt and a root+key for the item)\n");
113 fprintf(stderr, "\t-D Corrupt a dir item, must specify key and field\n");
117 static void corrupt_keys(struct btrfs_trans_handle *trans,
118 struct btrfs_root *root,
119 struct extent_buffer *eb)
124 struct btrfs_disk_key bad_key;;
126 nr = btrfs_header_nritems(eb);
131 bad_slot = rand() % nr;
133 if (bad_slot == slot)
137 "corrupting keys in block %llu slot %d swapping with %d\n",
138 (unsigned long long)eb->start, slot, bad_slot);
140 if (btrfs_header_level(eb) == 0) {
141 btrfs_item_key(eb, &bad_key, bad_slot);
142 btrfs_set_item_key(eb, &bad_key, slot);
144 btrfs_node_key(eb, &bad_key, bad_slot);
145 btrfs_set_node_key(eb, &bad_key, slot);
147 btrfs_mark_buffer_dirty(eb);
150 btrfs_super_csum_size(root->fs_info->super_copy);
151 csum_tree_block_size(eb, csum_size, 0);
152 write_extent_to_disk(eb);
157 static int corrupt_keys_in_block(struct btrfs_root *root, u64 bytenr)
159 struct extent_buffer *eb;
161 eb = read_tree_block(root, bytenr, root->leafsize, 0);
165 corrupt_keys(NULL, root, eb);
166 free_extent_buffer(eb);
170 static int corrupt_extent(struct btrfs_trans_handle *trans,
171 struct btrfs_root *root, u64 bytenr, u64 copy)
173 struct btrfs_key key;
174 struct extent_buffer *leaf;
177 struct btrfs_path *path;
180 int should_del = rand() % 3;
182 path = btrfs_alloc_path();
186 key.objectid = bytenr;
188 key.offset = (u64)-1;
191 ret = btrfs_search_slot(trans, root->fs_info->extent_root,
197 if (path->slots[0] == 0)
202 leaf = path->nodes[0];
203 slot = path->slots[0];
204 btrfs_item_key_to_cpu(leaf, &key, slot);
205 if (key.objectid != bytenr)
208 if (key.type != BTRFS_EXTENT_ITEM_KEY &&
209 key.type != BTRFS_TREE_BLOCK_REF_KEY &&
210 key.type != BTRFS_EXTENT_DATA_REF_KEY &&
211 key.type != BTRFS_EXTENT_REF_V0_KEY &&
212 key.type != BTRFS_SHARED_BLOCK_REF_KEY &&
213 key.type != BTRFS_SHARED_DATA_REF_KEY)
218 "deleting extent record: key %llu %u %llu\n",
219 key.objectid, key.type, key.offset);
221 if (key.type == BTRFS_EXTENT_ITEM_KEY) {
222 /* make sure this extent doesn't get
223 * reused for other purposes */
224 btrfs_pin_extent(root->fs_info,
225 key.objectid, key.offset);
228 btrfs_del_item(trans, root, path);
231 "corrupting extent record: key %llu %u %llu\n",
232 key.objectid, key.type, key.offset);
233 ptr = btrfs_item_ptr_offset(leaf, slot);
234 item_size = btrfs_item_size_nr(leaf, slot);
235 memset_extent_buffer(leaf, 0, ptr, item_size);
236 btrfs_mark_buffer_dirty(leaf);
239 btrfs_release_path(path);
247 btrfs_free_path(path);
251 static void btrfs_corrupt_extent_leaf(struct btrfs_trans_handle *trans,
252 struct btrfs_root *root,
253 struct extent_buffer *eb)
255 u32 nr = btrfs_header_nritems(eb);
256 u32 victim = rand() % nr;
258 struct btrfs_key key;
260 btrfs_item_key_to_cpu(eb, &key, victim);
261 objectid = key.objectid;
262 corrupt_extent(trans, root, objectid, 1);
265 static void btrfs_corrupt_extent_tree(struct btrfs_trans_handle *trans,
266 struct btrfs_root *root,
267 struct extent_buffer *eb)
274 if (btrfs_is_leaf(eb)) {
275 btrfs_corrupt_extent_leaf(trans, root, eb);
279 if (btrfs_header_level(eb) == 1 && eb != root->node) {
284 for (i = 0; i < btrfs_header_nritems(eb); i++) {
285 struct extent_buffer *next;
287 next = read_tree_block(root, btrfs_node_blockptr(eb, i),
289 btrfs_node_ptr_generation(eb, i));
292 btrfs_corrupt_extent_tree(trans, root, next);
293 free_extent_buffer(next);
297 enum btrfs_inode_field {
298 BTRFS_INODE_FIELD_ISIZE,
299 BTRFS_INODE_FIELD_BAD,
302 enum btrfs_file_extent_field {
303 BTRFS_FILE_EXTENT_DISK_BYTENR,
304 BTRFS_FILE_EXTENT_BAD,
307 enum btrfs_dir_item_field {
309 BTRFS_DIR_ITEM_LOCATION_OBJECTID,
313 enum btrfs_metadata_block_field {
314 BTRFS_METADATA_BLOCK_GENERATION,
315 BTRFS_METADATA_BLOCK_BAD,
318 enum btrfs_item_field {
323 enum btrfs_key_field {
330 static enum btrfs_inode_field convert_inode_field(char *field)
332 if (!strncmp(field, "isize", FIELD_BUF_LEN))
333 return BTRFS_INODE_FIELD_ISIZE;
334 return BTRFS_INODE_FIELD_BAD;
337 static enum btrfs_file_extent_field convert_file_extent_field(char *field)
339 if (!strncmp(field, "disk_bytenr", FIELD_BUF_LEN))
340 return BTRFS_FILE_EXTENT_DISK_BYTENR;
341 return BTRFS_FILE_EXTENT_BAD;
344 static enum btrfs_metadata_block_field
345 convert_metadata_block_field(char *field)
347 if (!strncmp(field, "generation", FIELD_BUF_LEN))
348 return BTRFS_METADATA_BLOCK_GENERATION;
349 return BTRFS_METADATA_BLOCK_BAD;
352 static enum btrfs_key_field convert_key_field(char *field)
354 if (!strncmp(field, "objectid", FIELD_BUF_LEN))
355 return BTRFS_KEY_OBJECTID;
356 if (!strncmp(field, "type", FIELD_BUF_LEN))
357 return BTRFS_KEY_TYPE;
358 if (!strncmp(field, "offset", FIELD_BUF_LEN))
359 return BTRFS_KEY_OFFSET;
360 return BTRFS_KEY_BAD;
363 static enum btrfs_item_field convert_item_field(char *field)
365 if (!strncmp(field, "offset", FIELD_BUF_LEN))
366 return BTRFS_ITEM_OFFSET;
367 return BTRFS_ITEM_BAD;
370 static enum btrfs_dir_item_field convert_dir_item_field(char *field)
372 if (!strncmp(field, "name", FIELD_BUF_LEN))
373 return BTRFS_DIR_ITEM_NAME;
374 if (!strncmp(field, "location_objectid", FIELD_BUF_LEN))
375 return BTRFS_DIR_ITEM_LOCATION_OBJECTID;
376 return BTRFS_DIR_ITEM_BAD;
379 static u64 generate_u64(u64 orig)
384 } while (ret == orig);
388 static u32 generate_u32(u32 orig)
393 } while (ret == orig);
397 static u8 generate_u8(u8 orig)
402 } while (ret == orig);
406 static int corrupt_key(struct btrfs_root *root, struct btrfs_key *key,
409 enum btrfs_key_field corrupt_field = convert_key_field(field);
410 struct btrfs_path *path;
411 struct btrfs_trans_handle *trans;
414 root = root->fs_info->fs_root;
415 if (corrupt_field == BTRFS_KEY_BAD) {
416 fprintf(stderr, "Invalid field %s\n", field);
420 path = btrfs_alloc_path();
424 trans = btrfs_start_transaction(root, 1);
426 btrfs_free_path(path);
427 return PTR_ERR(trans);
430 ret = btrfs_search_slot(trans, root, key, path, 0, 1);
434 fprintf(stderr, "Couldn't find the key to corrupt\n");
439 switch (corrupt_field) {
440 case BTRFS_KEY_OBJECTID:
441 key->objectid = generate_u64(key->objectid);
444 key->type = generate_u8(key->type);
446 case BTRFS_KEY_OFFSET:
447 key->offset = generate_u64(key->objectid);
450 fprintf(stderr, "Invalid field %s, %d\n", field,
456 btrfs_set_item_key_unsafe(root, path, key);
458 btrfs_free_path(path);
459 btrfs_commit_transaction(trans, root);
463 static int corrupt_dir_item(struct btrfs_root *root, struct btrfs_key *key,
466 struct btrfs_trans_handle *trans;
467 struct btrfs_dir_item *di;
468 struct btrfs_path *path;
470 struct btrfs_key location;
471 struct btrfs_disk_key disk_key;
472 unsigned long name_ptr;
473 enum btrfs_dir_item_field corrupt_field =
474 convert_dir_item_field(field);
479 if (corrupt_field == BTRFS_DIR_ITEM_BAD) {
480 fprintf(stderr, "Invalid field %s\n", field);
484 path = btrfs_alloc_path();
488 trans = btrfs_start_transaction(root, 1);
490 btrfs_free_path(path);
491 return PTR_ERR(trans);
494 ret = btrfs_search_slot(trans, root, key, path, 0, 1);
498 fprintf(stderr, "Error searching for dir item %d\n", ret);
502 di = btrfs_item_ptr(path->nodes[0], path->slots[0],
503 struct btrfs_dir_item);
505 switch (corrupt_field) {
506 case BTRFS_DIR_ITEM_NAME:
507 name_len = btrfs_dir_name_len(path->nodes[0], di);
508 name = malloc(name_len);
513 name_ptr = (unsigned long)(di + 1);
514 read_extent_buffer(path->nodes[0], name, name_ptr, name_len);
516 write_extent_buffer(path->nodes[0], name, name_ptr, name_len);
517 btrfs_mark_buffer_dirty(path->nodes[0]);
520 case BTRFS_DIR_ITEM_LOCATION_OBJECTID:
521 btrfs_dir_item_key_to_cpu(path->nodes[0], di, &location);
522 bogus = generate_u64(location.objectid);
523 location.objectid = bogus;
524 btrfs_cpu_key_to_disk(&disk_key, &location);
525 btrfs_set_dir_item_key(path->nodes[0], di, &disk_key);
526 btrfs_mark_buffer_dirty(path->nodes[0]);
533 btrfs_commit_transaction(trans, root);
534 btrfs_free_path(path);
538 static int corrupt_inode(struct btrfs_trans_handle *trans,
539 struct btrfs_root *root, u64 inode, char *field)
541 struct btrfs_inode_item *ei;
542 struct btrfs_path *path;
543 struct btrfs_key key;
544 enum btrfs_inode_field corrupt_field = convert_inode_field(field);
549 if (corrupt_field == BTRFS_INODE_FIELD_BAD) {
550 fprintf(stderr, "Invalid field %s\n", field);
554 key.objectid = inode;
555 key.type = BTRFS_INODE_ITEM_KEY;
556 key.offset = (u64)-1;
558 path = btrfs_alloc_path();
562 ret = btrfs_search_slot(trans, root, &key, path, 0, 1);
566 if (!path->slots[0]) {
567 fprintf(stderr, "Couldn't find inode %Lu\n", inode);
575 btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]);
576 if (key.objectid != inode) {
577 fprintf(stderr, "Couldn't find inode %Lu\n", inode);
582 ei = btrfs_item_ptr(path->nodes[0], path->slots[0],
583 struct btrfs_inode_item);
584 switch (corrupt_field) {
585 case BTRFS_INODE_FIELD_ISIZE:
586 orig = btrfs_inode_size(path->nodes[0], ei);
587 bogus = generate_u64(orig);
588 btrfs_set_inode_size(path->nodes[0], ei, bogus);
594 btrfs_mark_buffer_dirty(path->nodes[0]);
596 btrfs_free_path(path);
600 static int corrupt_file_extent(struct btrfs_trans_handle *trans,
601 struct btrfs_root *root, u64 inode, u64 extent,
604 struct btrfs_file_extent_item *fi;
605 struct btrfs_path *path;
606 struct btrfs_key key;
607 enum btrfs_file_extent_field corrupt_field;
612 corrupt_field = convert_file_extent_field(field);
613 if (corrupt_field == BTRFS_FILE_EXTENT_BAD) {
614 fprintf(stderr, "Invalid field %s\n", field);
618 key.objectid = inode;
619 key.type = BTRFS_EXTENT_DATA_KEY;
622 path = btrfs_alloc_path();
626 ret = btrfs_search_slot(trans, root, &key, path, 0, 1);
630 fprintf(stderr, "Couldn't find extent %llu for inode %llu\n",
636 fi = btrfs_item_ptr(path->nodes[0], path->slots[0],
637 struct btrfs_file_extent_item);
638 switch (corrupt_field) {
639 case BTRFS_FILE_EXTENT_DISK_BYTENR:
640 orig = btrfs_file_extent_disk_bytenr(path->nodes[0], fi);
641 bogus = generate_u64(orig);
642 btrfs_set_file_extent_disk_bytenr(path->nodes[0], fi, bogus);
648 btrfs_mark_buffer_dirty(path->nodes[0]);
650 btrfs_free_path(path);
654 static int corrupt_metadata_block(struct btrfs_root *root, u64 block,
657 struct btrfs_trans_handle *trans;
658 struct btrfs_path *path;
659 struct extent_buffer *eb;
660 struct btrfs_key key, root_key;
661 enum btrfs_metadata_block_field corrupt_field;
667 corrupt_field = convert_metadata_block_field(field);
668 if (corrupt_field == BTRFS_METADATA_BLOCK_BAD) {
669 fprintf(stderr, "Invalid field %s\n", field);
673 eb = read_tree_block(root, block, root->leafsize, 0);
675 fprintf(stderr, "Couldn't read in tree block %s\n", field);
678 root_objectid = btrfs_header_owner(eb);
679 level = btrfs_header_level(eb);
681 btrfs_node_key_to_cpu(eb, &key, 0);
683 btrfs_item_key_to_cpu(eb, &key, 0);
684 free_extent_buffer(eb);
686 root_key.objectid = root_objectid;
687 root_key.type = BTRFS_ROOT_ITEM_KEY;
688 root_key.offset = (u64)-1;
690 root = btrfs_read_fs_root(root->fs_info, &root_key);
692 fprintf(stderr, "Couldn't finde owner root %llu\n",
694 return PTR_ERR(root);
697 path = btrfs_alloc_path();
701 trans = btrfs_start_transaction(root, 1);
703 btrfs_free_path(path);
704 fprintf(stderr, "Couldn't start transaction %ld\n",
706 return PTR_ERR(trans);
709 path->lowest_level = level;
710 ret = btrfs_search_slot(trans, root, &key, path, 0, 1);
712 fprintf(stderr, "Error searching to node %d\n", ret);
715 eb = path->nodes[level];
718 switch (corrupt_field) {
719 case BTRFS_METADATA_BLOCK_GENERATION:
720 orig = btrfs_header_generation(eb);
721 bogus = generate_u64(orig);
722 btrfs_set_header_generation(eb, bogus);
728 btrfs_mark_buffer_dirty(path->nodes[level]);
730 btrfs_commit_transaction(trans, root);
731 btrfs_free_path(path);
735 static int corrupt_btrfs_item(struct btrfs_root *root, struct btrfs_key *key,
738 struct btrfs_trans_handle *trans;
739 struct btrfs_path *path;
740 enum btrfs_item_field corrupt_field;
744 corrupt_field = convert_item_field(field);
745 if (corrupt_field == BTRFS_ITEM_BAD) {
746 fprintf(stderr, "Invalid field %s\n", field);
750 path = btrfs_alloc_path();
754 trans = btrfs_start_transaction(root, 1);
756 btrfs_free_path(path);
757 fprintf(stderr, "Couldn't start transaction %ld\n",
759 return PTR_ERR(trans);
762 ret = btrfs_search_slot(trans, root, key, path, 0, 1);
764 fprintf(stderr, "Error searching to node %d\n", ret);
769 switch (corrupt_field) {
770 case BTRFS_ITEM_OFFSET:
771 orig = btrfs_item_offset_nr(path->nodes[0], path->slots[0]);
772 bogus = generate_u32(orig);
773 btrfs_set_item_offset(path->nodes[0],
774 btrfs_item_nr(path->slots[0]), bogus);
780 btrfs_mark_buffer_dirty(path->nodes[0]);
782 btrfs_commit_transaction(trans, root);
783 btrfs_free_path(path);
787 static struct option long_options[] = {
788 /* { "byte-count", 1, NULL, 'b' }, */
789 { "logical", 1, NULL, 'l' },
790 { "copy", 1, NULL, 'c' },
791 { "bytes", 1, NULL, 'b' },
792 { "extent-record", 0, NULL, 'e' },
793 { "extent-tree", 0, NULL, 'E' },
794 { "keys", 0, NULL, 'k' },
795 { "chunk-record", 0, NULL, 'u' },
796 { "chunk-tree", 0, NULL, 'U' },
797 { "inode", 1, NULL, 'i'},
798 { "file-extent", 1, NULL, 'x'},
799 { "metadata-block", 1, NULL, 'm'},
800 { "field", 1, NULL, 'f'},
801 { "key", 1, NULL, 'K'},
802 { "item", 0, NULL, 'I'},
803 { "dir-item", 0, NULL, 'D'},
807 /* corrupt item using NO cow.
808 * Because chunk recover will recover based on whole partition scaning,
809 * If using COW, chunk recover will use the old item to recover,
810 * which is still OK but we want to check the ability to rebuild chunk
811 * not only restore the old ones */
812 int corrupt_item_nocow(struct btrfs_trans_handle *trans,
813 struct btrfs_root *root, struct btrfs_path *path,
817 struct btrfs_key key;
818 struct extent_buffer *leaf;
823 leaf = path->nodes[0];
824 slot = path->slots[0];
825 /* Not deleting the first item of a leaf to keep leaf structure */
828 /* Only accept valid eb */
829 BUG_ON(!leaf->data || slot >= btrfs_header_nritems(leaf));
830 btrfs_item_key_to_cpu(leaf, &key, slot);
832 fprintf(stdout, "Deleting key and data [%llu, %u, %llu].\n",
833 key.objectid, key.type, key.offset);
834 btrfs_del_item(trans, root, path);
836 fprintf(stdout, "Corrupting key and data [%llu, %u, %llu].\n",
837 key.objectid, key.type, key.offset);
838 ptr = btrfs_item_ptr_offset(leaf, slot);
839 item_size = btrfs_item_size_nr(leaf, slot);
840 memset_extent_buffer(leaf, 0, ptr, item_size);
841 btrfs_mark_buffer_dirty(leaf);
845 int corrupt_chunk_tree(struct btrfs_trans_handle *trans,
846 struct btrfs_root *root)
851 struct btrfs_path *path;
852 struct btrfs_key key;
853 struct btrfs_key found_key;
854 struct extent_buffer *leaf;
856 path = btrfs_alloc_path();
860 key.objectid = (u64)-1;
861 key.offset = (u64)-1;
864 /* Here, cow and ins_len must equals 0 for the following reasons:
865 * 1) chunk recover is based on disk scanning, so COW should be
866 * disabled in case the original chunk being scanned and
867 * recovered using the old chunk.
868 * 2) if cow = 0, ins_len must also be set to 0, or BUG_ON will be
871 ret = btrfs_search_slot(trans, root, &key, path, 0, 0);
874 fprintf(stderr, "Error searching tree\n");
877 /* corrupt/del dev_item first */
878 while (!btrfs_previous_item(root, path, 0, BTRFS_DEV_ITEM_KEY)) {
879 slot = path->slots[0];
880 leaf = path->nodes[0];
882 /* Never delete the first item to keep the leaf structure */
883 if (path->slots[0] == 0)
885 ret = corrupt_item_nocow(trans, root, path, del);
889 btrfs_release_path(path);
891 /* Here, cow and ins_len must equals 0 for the following reasons:
892 * 1) chunk recover is based on disk scanning, so COW should be
893 * disabled in case the original chunk being scanned and
894 * recovered using the old chunk.
895 * 2) if cow = 0, ins_len must also be set to 0, or BUG_ON will be
898 ret = btrfs_search_slot(trans, root, &key, path, 0, 0);
901 fprintf(stderr, "Error searching tree\n");
904 /* corrupt/del chunk then*/
905 while (!btrfs_previous_item(root, path, 0, BTRFS_CHUNK_ITEM_KEY)) {
906 slot = path->slots[0];
907 leaf = path->nodes[0];
909 btrfs_item_key_to_cpu(leaf, &found_key, slot);
910 ret = corrupt_item_nocow(trans, root, path, del);
915 btrfs_free_path(path);
918 int find_chunk_offset(struct btrfs_root *root,
919 struct btrfs_path *path, u64 offset)
921 struct btrfs_key key;
924 key.objectid = BTRFS_FIRST_CHUNK_TREE_OBJECTID;
925 key.type = BTRFS_CHUNK_ITEM_KEY;
928 /* Here, cow and ins_len must equals 0 for following reasons:
929 * 1) chunk recover is based on disk scanning, so COW should
930 * be disabled in case the original chunk being scanned
931 * and recovered using the old chunk.
932 * 2) if cow = 0, ins_len must also be set to 0, or BUG_ON
935 ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
937 fprintf(stderr, "Can't find chunk with given offset %llu\n",
942 fprintf(stderr, "Error searching chunk");
949 int main(int ac, char **av)
951 struct cache_tree root_cache;
952 struct btrfs_key key;
953 struct btrfs_root *root;
954 struct extent_buffer *eb;
956 /* chunk offset can be 0,so change to (u64)-1 */
957 u64 logical = (u64)-1;
959 int option_index = 0;
964 int corrupt_block_keys = 0;
967 int corrupt_item = 0;
969 u64 metadata_block = 0;
971 u64 file_extent = (u64)-1;
972 char field[FIELD_BUF_LEN];
976 memset(&key, 0, sizeof(key));
980 c = getopt_long(ac, av, "l:c:b:eEkuUi:f:x:m:K:ID", long_options,
986 logical = arg_strtou64(optarg);
989 copy = arg_strtou64(optarg);
992 bytes = arg_strtou64(optarg);
1001 corrupt_block_keys = 1;
1009 inode = arg_strtou64(optarg);
1012 strncpy(field, optarg, FIELD_BUF_LEN);
1015 file_extent = arg_strtou64(optarg);
1018 metadata_block = arg_strtou64(optarg);
1021 ret = sscanf(optarg, "%llu,%u,%llu",
1023 (unsigned int *)&key.type,
1026 fprintf(stderr, "error reading key "
1043 if (check_argc_min(ac, 1))
1048 cache_tree_init(&root_cache);
1050 root = open_ctree(dev, 0, OPEN_CTREE_WRITES);
1052 fprintf(stderr, "Open ctree failed\n");
1056 struct btrfs_trans_handle *trans;
1058 if (logical == (u64)-1)
1060 trans = btrfs_start_transaction(root, 1);
1061 ret = corrupt_extent (trans, root, logical, 0);
1062 btrfs_commit_transaction(trans, root);
1066 struct btrfs_trans_handle *trans;
1067 trans = btrfs_start_transaction(root, 1);
1068 btrfs_corrupt_extent_tree(trans, root->fs_info->extent_root,
1069 root->fs_info->extent_root->node);
1070 btrfs_commit_transaction(trans, root);
1074 struct btrfs_trans_handle *trans;
1075 struct btrfs_path *path;
1078 if (logical == (u64)-1)
1081 path = btrfs_alloc_path();
1083 fprintf(stderr, "path allocation failed\n");
1087 if (find_chunk_offset(root->fs_info->chunk_root, path,
1089 btrfs_free_path(path);
1092 trans = btrfs_start_transaction(root, 1);
1093 ret = corrupt_item_nocow(trans, root->fs_info->chunk_root,
1096 fprintf(stderr, "Failed to corrupt chunk record\n");
1097 btrfs_commit_transaction(trans, root);
1101 struct btrfs_trans_handle *trans;
1102 trans = btrfs_start_transaction(root, 1);
1103 ret = corrupt_chunk_tree(trans, root->fs_info->chunk_root);
1105 fprintf(stderr, "Failed to corrupt chunk tree\n");
1106 btrfs_commit_transaction(trans, root);
1110 struct btrfs_trans_handle *trans;
1115 trans = btrfs_start_transaction(root, 1);
1116 if (file_extent == (u64)-1) {
1117 printf("corrupting inode\n");
1118 ret = corrupt_inode(trans, root, inode, field);
1120 printf("corrupting file extent\n");
1121 ret = corrupt_file_extent(trans, root, inode,
1122 file_extent, field);
1124 btrfs_commit_transaction(trans, root);
1127 if (metadata_block) {
1130 ret = corrupt_metadata_block(root, metadata_block, field);
1134 if (!key.objectid || !strlen(field))
1136 ret = corrupt_dir_item(root, &key, field);
1142 ret = corrupt_btrfs_item(root, &key, field);
1145 if (key.objectid || key.offset || key.type) {
1148 ret = corrupt_key(root, &key, field);
1152 * If we made it here and we have extent set then we didn't specify
1153 * inode and we're screwed.
1155 if (file_extent != (u64)-1)
1158 if (logical == (u64)-1)
1162 bytes = root->sectorsize;
1164 bytes = (bytes + root->sectorsize - 1) / root->sectorsize;
1165 bytes *= root->sectorsize;
1168 if (corrupt_block_keys) {
1169 corrupt_keys_in_block(root, logical);
1171 eb = debug_corrupt_block(root, logical,
1172 root->sectorsize, copy);
1173 free_extent_buffer(eb);
1175 logical += root->sectorsize;
1176 bytes -= root->sectorsize;