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