/* SPDX-License-Identifier: GPL-2.0 */

#ifndef BTRFS_DIR_ITEM_H
#define BTRFS_DIR_ITEM_H

#include <linux/types.h>
#include <linux/crc32c.h>

struct fscrypt_str;
struct btrfs_fs_info;
struct btrfs_key;
struct btrfs_path;
struct btrfs_inode;
struct btrfs_root;
struct btrfs_trans_handle;

int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir_ino,
                          const struct fscrypt_str *name);
int btrfs_insert_dir_item(struct btrfs_trans_handle *trans,
                          const struct fscrypt_str *name, struct btrfs_inode *dir,
                          const struct btrfs_key *location, u8 type, u64 index);
struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans,
                                             struct btrfs_root *root,
                                             struct btrfs_path *path, u64 dir,
                                             const struct fscrypt_str *name, int mod);
struct btrfs_dir_item *btrfs_lookup_dir_index_item(
                        struct btrfs_trans_handle *trans,
                        struct btrfs_root *root,
                        struct btrfs_path *path, u64 dir,
                        u64 index, const struct fscrypt_str *name, int mod);
struct btrfs_dir_item *btrfs_search_dir_index_item(struct btrfs_root *root,
                            struct btrfs_path *path, u64 dirid,
                            const struct fscrypt_str *name);
int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
                              struct btrfs_root *root,
                              struct btrfs_path *path,
                              const struct btrfs_dir_item *di);
int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
                            struct btrfs_root *root,
                            struct btrfs_path *path, u64 objectid,
                            const char *name, u16 name_len,
                            const void *data, u16 data_len);
struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
                                          struct btrfs_root *root,
                                          struct btrfs_path *path, u64 dir,
                                          const char *name, u16 name_len,
                                          int mod);
struct btrfs_dir_item *btrfs_match_dir_item_name(const struct btrfs_path *path,
                                                 const char *name,
                                                 int name_len);

static inline u64 btrfs_name_hash(const char *name, int len)
{
       return crc32c((u32)~1, name, len);
}

#endif