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_invalid(struct bch_fs *, struct bkey_s_c,
11 enum bch_validate_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 *, u32, u64, u32,
39 const struct bch_hash_info *, u8,
40 const struct qstr *, u64, u64 *,
41 enum btree_iter_update_trigger_flags);
42 int bch2_dirent_create(struct btree_trans *, subvol_inum,
43 const struct bch_hash_info *, u8,
44 const struct qstr *, u64, u64 *,
45 enum btree_iter_update_trigger_flags);
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, 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
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