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
dirent_val_u64s(unsigned len)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
vfs_d_type(unsigned type)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