fs/btrfs/dir-item.h

   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