diff options
Diffstat (limited to 'btrfs-corrupt-block.c')
| -rw-r--r-- | btrfs-corrupt-block.c | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/btrfs-corrupt-block.c b/btrfs-corrupt-block.c index 5db18a18..f332bdf7 100644 --- a/btrfs-corrupt-block.c +++ b/btrfs-corrupt-block.c @@ -109,6 +109,7 @@ static void print_usage(void) "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"); + fprintf(stderr, "\t-r Operate on this root (only works with -d)\n"); exit(1); } @@ -1007,6 +1008,7 @@ int main(int ac, char **av) u64 metadata_block = 0; u64 inode = 0; u64 file_extent = (u64)-1; + u64 root_objectid = 0; char field[FIELD_BUF_LEN]; field[0] = '\0'; @@ -1034,11 +1036,12 @@ int main(int ac, char **av) { "item", 0, NULL, 'I'}, { "dir-item", 0, NULL, 'D'}, { "delete", 0, NULL, 'd'}, + { "root", 0, NULL, 'r'}, { NULL, 0, NULL, 0 } }; - c = getopt_long(ac, av, "l:c:b:eEkuUi:f:x:m:K:IDd", long_options, - &option_index); + c = getopt_long(ac, av, "l:c:b:eEkuUi:f:x:m:K:IDdr:", + long_options, &option_index); if (c < 0) break; switch(c) { @@ -1098,6 +1101,9 @@ int main(int ac, char **av) case 'd': delete = 1; break; + case 'r': + root_objectid = arg_strtou64(optarg); + break; default: print_usage(); } @@ -1206,9 +1212,25 @@ int main(int ac, char **av) ret = corrupt_btrfs_item(root, &key, field); } if (delete) { + struct btrfs_root *target = root; + if (!key.objectid) print_usage(); - ret = delete_item(root, &key); + if (root_objectid) { + struct btrfs_key root_key; + + root_key.objectid = root_objectid; + root_key.type = BTRFS_ROOT_ITEM_KEY; + root_key.offset = (u64)-1; + + target = btrfs_read_fs_root(root->fs_info, &root_key); + if (IS_ERR(target)) { + fprintf(stderr, "Couldn't find root %llu\n", + (unsigned long long)root_objectid); + print_usage(); + } + } + ret = delete_item(target, &key); goto out_close; } if (key.objectid || key.offset || key.type) { |