* into the tree
*/
int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, const char *name,
- u16 name_len, const void *data, u16 data_len,
- u64 dir)
+ struct btrfs_root *root,
+ struct btrfs_path *path, u64 objectid,
+ const char *name, u16 name_len,
+ const void *data, u16 data_len)
{
int ret = 0;
- struct btrfs_path *path;
struct btrfs_dir_item *dir_item;
unsigned long name_ptr, data_ptr;
struct btrfs_key key, location;
struct extent_buffer *leaf;
u32 data_size;
- key.objectid = dir;
+ BUG_ON(name_len + data_len > BTRFS_MAX_XATTR_SIZE(root));
+
+ key.objectid = objectid;
btrfs_set_key_type(&key, BTRFS_XATTR_ITEM_KEY);
key.offset = btrfs_name_hash(name, name_len);
- path = btrfs_alloc_path();
- if (!path)
- return -ENOMEM;
- if (name_len + data_len + sizeof(struct btrfs_dir_item) >
- BTRFS_LEAF_DATA_SIZE(root) - sizeof(struct btrfs_item))
- return -ENOSPC;
data_size = sizeof(*dir_item) + name_len + data_len;
dir_item = insert_with_overflow(trans, root, path, &key, data_size,
write_extent_buffer(leaf, data, data_ptr, data_len);
btrfs_mark_buffer_dirty(path->nodes[0]);
- btrfs_free_path(path);
return ret;
}
return btrfs_match_dir_item_name(root, path, name, name_len);
}
+struct btrfs_dir_item *
+btrfs_search_dir_index_item(struct btrfs_root *root,
+ struct btrfs_path *path, u64 dirid,
+ const char *name, int name_len)
+{
+ struct extent_buffer *leaf;
+ struct btrfs_dir_item *di;
+ struct btrfs_key key;
+ u32 nritems;
+ int ret;
+
+ key.objectid = dirid;
+ key.type = BTRFS_DIR_INDEX_KEY;
+ key.offset = 0;
+
+ ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
+ if (ret < 0)
+ return ERR_PTR(ret);
+
+ leaf = path->nodes[0];
+ nritems = btrfs_header_nritems(leaf);
+
+ while (1) {
+ if (path->slots[0] >= nritems) {
+ ret = btrfs_next_leaf(root, path);
+ if (ret < 0)
+ return ERR_PTR(ret);
+ if (ret > 0)
+ break;
+ leaf = path->nodes[0];
+ nritems = btrfs_header_nritems(leaf);
+ continue;
+ }
+
+ btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);
+ if (key.objectid != dirid || key.type != BTRFS_DIR_INDEX_KEY)
+ break;
+
+ di = btrfs_match_dir_item_name(root, path, name, name_len);
+ if (di)
+ return di;
+
+ path->slots[0]++;
+ }
+ return NULL;
+}
+
struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path, u64 dir,