diff options
Diffstat (limited to 'btrfs-corrupt-block.c')
| -rw-r--r-- | btrfs-corrupt-block.c | 45 |
1 files changed, 44 insertions, 1 deletions
diff --git a/btrfs-corrupt-block.c b/btrfs-corrupt-block.c index 171c81db..af9ae4d4 100644 --- a/btrfs-corrupt-block.c +++ b/btrfs-corrupt-block.c @@ -111,6 +111,7 @@ static void print_usage(void) fprintf(stderr, "\t-I An item to corrupt (must also specify the field " "to corrupt and a root+key for the item)\n"); fprintf(stderr, "\t-D Corrupt a dir item, must specify key and field\n"); + fprintf(stderr, "\t-d Delete this item (must specify -K)\n"); exit(1); } @@ -811,6 +812,39 @@ out: return ret; } +static int delete_item(struct btrfs_root *root, struct btrfs_key *key) +{ + struct btrfs_trans_handle *trans; + struct btrfs_path *path; + int ret; + + path = btrfs_alloc_path(); + if (!path) + return -ENOMEM; + + trans = btrfs_start_transaction(root, 1); + if (IS_ERR(trans)) { + btrfs_free_path(path); + fprintf(stderr, "Couldn't start transaction %ld\n", + PTR_ERR(trans)); + return PTR_ERR(trans); + } + + ret = btrfs_search_slot(trans, root, key, path, -1, 1); + if (ret) { + if (ret > 0) + ret = -ENOENT; + fprintf(stderr, "Error searching to node %d\n", ret); + goto out; + } + ret = btrfs_del_item(trans, root, path); + btrfs_mark_buffer_dirty(path->nodes[0]); +out: + btrfs_commit_transaction(trans, root); + btrfs_free_path(path); + return ret; +} + static struct option long_options[] = { /* { "byte-count", 1, NULL, 'b' }, */ { "logical", 1, NULL, 'l' }, @@ -828,6 +862,7 @@ static struct option long_options[] = { { "key", 1, NULL, 'K'}, { "item", 0, NULL, 'I'}, { "dir-item", 0, NULL, 'D'}, + { "delete", 0, NULL, 'd'}, { 0, 0, 0, 0} }; @@ -993,6 +1028,7 @@ int main(int ac, char **av) int chunk_tree = 0; int corrupt_item = 0; int corrupt_di = 0; + int delete = 0; u64 metadata_block = 0; u64 inode = 0; u64 file_extent = (u64)-1; @@ -1004,7 +1040,7 @@ int main(int ac, char **av) while(1) { int c; - c = getopt_long(ac, av, "l:c:b:eEkuUi:f:x:m:K:ID", long_options, + c = getopt_long(ac, av, "l:c:b:eEkuUi:f:x:m:K:IDd", long_options, &option_index); if (c < 0) break; @@ -1060,6 +1096,8 @@ int main(int ac, char **av) break; case 'I': corrupt_item = 1; + case 'd': + delete = 1; break; default: print_usage(); @@ -1167,6 +1205,11 @@ int main(int ac, char **av) if (!key.objectid) print_usage(); ret = corrupt_btrfs_item(root, &key, field); + } + if (delete) { + if (!key.objectid) + print_usage(); + ret = delete_item(root, &key); goto out_close; } if (key.objectid || key.offset || key.type) { |