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Update bcachefs sources to 18686af684 bcachefs: Inode backpointers
[bcachefs-tools-debian] / libbcachefs / dirent.h
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 extern const struct bch_hash_desc bch2_dirent_hash_desc;
8
9 const char *bch2_dirent_invalid(const struct bch_fs *, struct bkey_s_c);
10 void bch2_dirent_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
11
12 #define bch2_bkey_ops_dirent (struct bkey_ops) {        \
13         .key_invalid    = bch2_dirent_invalid,          \
14         .val_to_text    = bch2_dirent_to_text,          \
15 }
16
17 struct qstr;
18 struct file;
19 struct dir_context;
20 struct bch_fs;
21 struct bch_hash_info;
22 struct bch_inode_info;
23
24 unsigned bch2_dirent_name_bytes(struct bkey_s_c_dirent);
25
26 static inline unsigned dirent_val_u64s(unsigned len)
27 {
28         return DIV_ROUND_UP(offsetof(struct bch_dirent, d_name) + len,
29                             sizeof(u64));
30 }
31
32 int bch2_dirent_create(struct btree_trans *, u64,
33                        const struct bch_hash_info *, u8,
34                        const struct qstr *, u64, u64 *, int);
35
36 int bch2_dirent_delete_at(struct btree_trans *,
37                           const struct bch_hash_info *,
38                           struct btree_iter *);
39
40 enum bch_rename_mode {
41         BCH_RENAME,
42         BCH_RENAME_OVERWRITE,
43         BCH_RENAME_EXCHANGE,
44 };
45
46 int bch2_dirent_rename(struct btree_trans *,
47                        u64, struct bch_hash_info *,
48                        u64, struct bch_hash_info *,
49                        const struct qstr *, u64 *, u64 *,
50                        const struct qstr *, u64 *, u64 *,
51                        enum bch_rename_mode);
52
53 struct btree_iter *
54 __bch2_dirent_lookup_trans(struct btree_trans *, u64,
55                            const struct bch_hash_info *,
56                            const struct qstr *, unsigned);
57 u64 bch2_dirent_lookup(struct bch_fs *, u64, const struct bch_hash_info *,
58                        const struct qstr *);
59
60 int bch2_empty_dir_trans(struct btree_trans *, u64);
61 int bch2_readdir(struct bch_fs *, u64, struct dir_context *);
62
63 #endif /* _BCACHEFS_DIRENT_H */