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