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1/* SPDX-License-Identifier: GPL-2.0 */2 3#ifndef BTRFS_DIR_ITEM_H4#define BTRFS_DIR_ITEM_H5 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_root;14struct btrfs_trans_handle;15 16int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir,17 const struct fscrypt_str *name);18int 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);21struct 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);25struct 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);30struct 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);33int 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);37int 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);42struct 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);47struct 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 52static inline u64 btrfs_name_hash(const char *name, int len)53{54 return crc32c((u32)~1, name, len);55}56 57#endif58