diff options
Diffstat (limited to 'fs/btrfs/dir-item.c')
-rw-r--r-- | fs/btrfs/dir-item.c | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/fs/btrfs/dir-item.c b/fs/btrfs/dir-item.c index 1a3929afdc4..aab197a6d55 100644 --- a/fs/btrfs/dir-item.c +++ b/fs/btrfs/dir-item.c @@ -114,85 +114,6 @@ struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, return btrfs_match_dir_item_name(root, path, name, name_len); } -static int __verify_dir_item(struct btrfs_dir_item *item, u32 start, u32 total) -{ - u16 max_len = BTRFS_NAME_LEN; - u32 end; - - if (item->type >= BTRFS_FT_MAX) { - printf("%s: invalid dir item type: %i\n", __func__, item->type); - return 1; - } - - if (item->type == BTRFS_FT_XATTR) - max_len = 255; /* XATTR_NAME_MAX */ - - end = start + sizeof(*item) + item->name_len; - if (item->name_len > max_len || end > total) { - printf("%s: invalid dir item name len: %u\n", __func__, - item->name_len); - return 1; - } - - return 0; -} - -static struct btrfs_dir_item * -__btrfs_match_dir_item_name(struct __btrfs_path *path, const char *name, - int name_len) -{ - struct btrfs_dir_item *item; - u32 total_len, cur = 0, this_len; - const char *name_ptr; - - item = btrfs_path_item_ptr(path, struct btrfs_dir_item); - - total_len = btrfs_path_item_size(path); - - while (cur < total_len) { - btrfs_dir_item_to_cpu(item); - this_len = sizeof(*item) + item->name_len + item->data_len; - name_ptr = (const char *) (item + 1); - - if (__verify_dir_item(item, cur, total_len)) - return NULL; - if (item->name_len == name_len && !memcmp(name_ptr, name, - name_len)) - return item; - - cur += this_len; - item = (struct btrfs_dir_item *) ((u8 *) item + this_len); - } - - return NULL; -} - -int __btrfs_lookup_dir_item(const struct __btrfs_root *root, u64 dir, - const char *name, int name_len, - struct btrfs_dir_item *item) -{ - struct __btrfs_path path; - struct btrfs_key key; - struct btrfs_dir_item *res = NULL; - - key.objectid = dir; - key.type = BTRFS_DIR_ITEM_KEY; - key.offset = btrfs_name_hash(name, name_len); - - if (btrfs_search_tree(root, &key, &path)) - return -1; - - if (btrfs_comp_keys_type(&key, btrfs_path_leaf_key(&path))) - goto out; - - res = __btrfs_match_dir_item_name(&path, name, name_len); - if (res) - *item = *res; -out: - __btrfs_free_path(&path); - return res ? 0 : -1; -} - int btrfs_iter_dir(struct btrfs_root *root, u64 ino, btrfs_iter_dir_callback_t callback) { |