1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _BCACHEFS_DIRENT_H 3 #define _BCACHEFS_DIRENT_H 4 5 #include "str_hash.h" 6 7 enum bch_validate_flags; 8 extern const struct bch_hash_desc bch2_dirent_hash_desc; 9 10 int bch2_dirent_validate(struct bch_fs *, struct bkey_s_c, enum bch_validate_flags); 11 void bch2_dirent_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c); 12 13 #define bch2_bkey_ops_dirent ((struct bkey_ops) { \ 14 .key_validate = bch2_dirent_validate, \ 15 .val_to_text = bch2_dirent_to_text, \ 16 .min_val_size = 16, \ 17 }) 18 19 struct qstr; 20 struct file; 21 struct dir_context; 22 struct bch_fs; 23 struct bch_hash_info; 24 struct bch_inode_info; 25 26 struct qstr bch2_dirent_get_name(struct bkey_s_c_dirent d); 27 28 static inline unsigned dirent_val_u64s(unsigned len) 29 { 30 return DIV_ROUND_UP(offsetof(struct bch_dirent, d_name) + len, 31 sizeof(u64)); 32 } 33 34 int bch2_dirent_read_target(struct btree_trans *, subvol_inum, 35 struct bkey_s_c_dirent, subvol_inum *); 36 37 int bch2_dirent_create_snapshot(struct btree_trans *, u32, u64, u32, 38 const struct bch_hash_info *, u8, 39 const struct qstr *, u64, u64 *, 40 enum btree_iter_update_trigger_flags); 41 int bch2_dirent_create(struct btree_trans *, subvol_inum, 42 const struct bch_hash_info *, u8, 43 const struct qstr *, u64, u64 *, 44 enum btree_iter_update_trigger_flags); 45 46 static inline unsigned vfs_d_type(unsigned type) 47 { 48 return type == DT_SUBVOL ? DT_DIR : type; 49 } 50 51 enum bch_rename_mode { 52 BCH_RENAME, 53 BCH_RENAME_OVERWRITE, 54 BCH_RENAME_EXCHANGE, 55 }; 56 57 int bch2_dirent_rename(struct btree_trans *, 58 subvol_inum, struct bch_hash_info *, 59 subvol_inum, struct bch_hash_info *, 60 const struct qstr *, subvol_inum *, u64 *, 61 const struct qstr *, subvol_inum *, u64 *, 62 enum bch_rename_mode); 63 64 int bch2_dirent_lookup_trans(struct btree_trans *, struct btree_iter *, 65 subvol_inum, const struct bch_hash_info *, 66 const struct qstr *, subvol_inum *, unsigned); 67 u64 bch2_dirent_lookup(struct bch_fs *, subvol_inum, 68 const struct bch_hash_info *, 69 const struct qstr *, subvol_inum *); 70 71 int bch2_empty_dir_snapshot(struct btree_trans *, u64, u32, u32); 72 int bch2_empty_dir_trans(struct btree_trans *, subvol_inum); 73 int bch2_readdir(struct bch_fs *, subvol_inum, struct dir_context *); 74 75 #endif /* _BCACHEFS_DIRENT_H */ 76