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 bkey_invalid_flags; 8 extern const struct bch_hash_desc bch2_dirent_hash_desc; 9 10 int bch2_dirent_invalid(struct bch_fs *, struct bkey_s_c, 11 enum bkey_invalid_flags, struct printbuf *); 12 void bch2_dirent_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c); 13 14 #define bch2_bkey_ops_dirent ((struct bkey_ops) { \ 15 .key_invalid = bch2_dirent_invalid, \ 16 .val_to_text = bch2_dirent_to_text, \ 17 .min_val_size = 16, \ 18 }) 19 20 struct qstr; 21 struct file; 22 struct dir_context; 23 struct bch_fs; 24 struct bch_hash_info; 25 struct bch_inode_info; 26 27 struct qstr bch2_dirent_get_name(struct bkey_s_c_dirent d); 28 29 static inline unsigned dirent_val_u64s(unsigned len) 30 { 31 return DIV_ROUND_UP(offsetof(struct bch_dirent, d_name) + len, 32 sizeof(u64)); 33 } 34 35 int bch2_dirent_read_target(struct btree_trans *, subvol_inum, 36 struct bkey_s_c_dirent, subvol_inum *); 37 38 int bch2_dirent_create_snapshot(struct btree_trans *, u64, u32, 39 const struct bch_hash_info *, u8, 40 const struct qstr *, u64, u64 *, 41 bch_str_hash_flags_t); 42 int bch2_dirent_create(struct btree_trans *, subvol_inum, 43 const struct bch_hash_info *, u8, 44 const struct qstr *, u64, u64 *, 45 bch_str_hash_flags_t); 46 47 static inline unsigned vfs_d_type(unsigned type) 48 { 49 return type == DT_SUBVOL ? DT_DIR : type; 50 } 51 52 enum bch_rename_mode { 53 BCH_RENAME, 54 BCH_RENAME_OVERWRITE, 55 BCH_RENAME_EXCHANGE, 56 }; 57 58 int bch2_dirent_rename(struct btree_trans *, 59 subvol_inum, struct bch_hash_info *, 60 subvol_inum, struct bch_hash_info *, 61 const struct qstr *, subvol_inum *, u64 *, 62 const struct qstr *, subvol_inum *, u64 *, 63 enum bch_rename_mode); 64 65 int __bch2_dirent_lookup_trans(struct btree_trans *, struct btree_iter *, 66 subvol_inum, const struct bch_hash_info *, 67 const struct qstr *, subvol_inum *, unsigned); 68 u64 bch2_dirent_lookup(struct bch_fs *, subvol_inum, 69 const struct bch_hash_info *, 70 const struct qstr *, subvol_inum *); 71 72 int bch2_empty_dir_snapshot(struct btree_trans *, u64, u32); 73 int bch2_empty_dir_trans(struct btree_trans *, subvol_inum); 74 int bch2_readdir(struct bch_fs *, subvol_inum, struct dir_context *); 75 76 #endif /* _BCACHEFS_DIRENT_H */ 77