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/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_root;
  14 struct btrfs_trans_handle;
  15
  16 int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir,
  17                           const struct fscrypt_str *name);
  18 int 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);
  21 struct 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);
  25 struct 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);
  30 struct 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);
  33 int 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);
  37 int 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);
  42 struct 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);
  47 struct btrfs_dir_item *btrfs_match_dir_item_name(const struct btrfs_path *path,
  48                                                  const char *name,
  49                                                  int name_len);
  50
  51 static inline u64 btrfs_name_hash(const char *name, int len)
  52 {
  53        return crc32c((u32)~1, name, len);
  54 }
  55
  56 #endif