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_inode; 14 struct btrfs_root; 15 struct btrfs_trans_handle; 16 struct btrfs_dir_index_prealloc; 17 18 int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir_ino, 19 const struct fscrypt_str *name); 20 int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, 21 const struct fscrypt_str *name, struct btrfs_inode *dir, 22 const struct btrfs_key *location, u8 type, u64 index, 23 struct btrfs_dir_index_prealloc *prealloc); 24 struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, 25 struct btrfs_root *root, 26 struct btrfs_path *path, u64 dir, 27 const struct fscrypt_str *name, int mod); 28 struct btrfs_dir_item *btrfs_lookup_dir_index_item( 29 struct btrfs_trans_handle *trans, 30 struct btrfs_root *root, 31 struct btrfs_path *path, u64 dir, 32 u64 index, const struct fscrypt_str *name, int mod); 33 struct btrfs_dir_item *btrfs_search_dir_index_item(struct btrfs_root *root, 34 struct btrfs_path *path, u64 dirid, 35 const struct fscrypt_str *name); 36 int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, 37 struct btrfs_root *root, 38 struct btrfs_path *path, 39 const struct btrfs_dir_item *di); 40 int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, 41 struct btrfs_root *root, 42 struct btrfs_path *path, u64 objectid, 43 const char *name, u16 name_len, 44 const void *data, u16 data_len); 45 struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, 46 struct btrfs_root *root, 47 struct btrfs_path *path, u64 dir, 48 const char *name, u16 name_len, 49 int mod); 50 struct btrfs_dir_item *btrfs_match_dir_item_name(const struct btrfs_path *path, 51 const char *name, 52 int name_len); 53 54 static inline u64 btrfs_name_hash(const char *name, int len) 55 { 56 return crc32c((u32)~1, name, len); 57 } 58 #endif 59