dir-item.h

 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
 9struct fscrypt_str;
10struct btrfs_fs_info;
11struct btrfs_key;
12struct btrfs_path;
13struct btrfs_inode;
14struct btrfs_root;
15struct btrfs_trans_handle;
16
17int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir_ino,
18			  const struct fscrypt_str *name);
19int btrfs_insert_dir_item(struct btrfs_trans_handle *trans,
20			  const struct fscrypt_str *name, struct btrfs_inode *dir,
21			  const struct btrfs_key *location, u8 type, u64 index);
22struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans,
23					     struct btrfs_root *root,
24					     struct btrfs_path *path, u64 dir,
25					     const struct fscrypt_str *name, int mod);
26struct btrfs_dir_item *btrfs_lookup_dir_index_item(
27			struct btrfs_trans_handle *trans,
28			struct btrfs_root *root,
29			struct btrfs_path *path, u64 dir,
30			u64 index, const struct fscrypt_str *name, int mod);
31struct btrfs_dir_item *btrfs_search_dir_index_item(struct btrfs_root *root,
32			    struct btrfs_path *path, u64 dirid,
33			    const struct fscrypt_str *name);
34int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
35			      struct btrfs_root *root,
36			      struct btrfs_path *path,
37			      const struct btrfs_dir_item *di);
38int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
39			    struct btrfs_root *root,
40			    struct btrfs_path *path, u64 objectid,
41			    const char *name, u16 name_len,
42			    const void *data, u16 data_len);
43struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
44					  struct btrfs_root *root,
45					  struct btrfs_path *path, u64 dir,
46					  const char *name, u16 name_len,
47					  int mod);
48struct btrfs_dir_item *btrfs_match_dir_item_name(const struct btrfs_path *path,
49						 const char *name,
50						 int name_len);
51
52static inline u64 btrfs_name_hash(const char *name, int len)
53{
54       return crc32c((u32)~1, name, len);
55}
56
57#endif