1 /* SPDX-License-Identifier: GPL-2.0 */
2
3 #ifndef BTRFS_DIR_ITEM_H
4 #define BTRFS_DIR_ITEM_H
5
6 #include <linux/types.h>
7 #include <linux/crc32c.h>
8
9 struct fscrypt_str;
10 struct btrfs_fs_info;
11 struct btrfs_key;
12 struct btrfs_path;
13 struct btrfs_root;
14 struct btrfs_trans_handle;
15
16 int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir,
17 const struct fscrypt_str *name);
18 int btrfs_insert_dir_item(struct btrfs_trans_handle *trans,
19 const struct fscrypt_str *name, struct btrfs_inode *dir,
20 const struct btrfs_key *location, u8 type, u64 index);
21 struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans,
22 struct btrfs_root *root,
23 struct btrfs_path *path, u64 dir,
24 const struct fscrypt_str *name, int mod);
25 struct btrfs_dir_item *btrfs_lookup_dir_index_item(
26 struct btrfs_trans_handle *trans,
27 struct btrfs_root *root,
28 struct btrfs_path *path, u64 dir,
29 u64 index, const struct fscrypt_str *name, int mod);
30 struct btrfs_dir_item *btrfs_search_dir_index_item(struct btrfs_root *root,
31 struct btrfs_path *path, u64 dirid,
32 const struct fscrypt_str *name);
33 int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
34 struct btrfs_root *root,
35 struct btrfs_path *path,
36 const struct btrfs_dir_item *di);
37 int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
38 struct btrfs_root *root,
39 struct btrfs_path *path, u64 objectid,
40 const char *name, u16 name_len,
41 const void *data, u16 data_len);
42 struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
43 struct btrfs_root *root,
44 struct btrfs_path *path, u64 dir,
45 const char *name, u16 name_len,
46 int mod);
47 struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info,
48 const struct btrfs_path *path,
49 const char *name,
50 int name_len);
51
52 static inline u64 btrfs_name_hash(const char *name, int len)
53 {
54 return crc32c((u32)~1, name, len);
55 }
56
57 #endif
58
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