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Update bcachefs sources to 0d63ed13ea3d closures: Fix race in closure_sync()
[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 enum bkey_invalid_flags;
8 extern const struct bch_hash_desc bch2_dirent_hash_desc;
9
10 int bch2_dirent_invalid(const 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(struct btree_trans *, subvol_inum,
39                        const struct bch_hash_info *, u8,
40                        const struct qstr *, u64, u64 *, int);
41
42 static inline unsigned vfs_d_type(unsigned type)
43 {
44         return type == DT_SUBVOL ? DT_DIR : type;
45 }
46
47 enum bch_rename_mode {
48         BCH_RENAME,
49         BCH_RENAME_OVERWRITE,
50         BCH_RENAME_EXCHANGE,
51 };
52
53 int bch2_dirent_rename(struct btree_trans *,
54                        subvol_inum, struct bch_hash_info *,
55                        subvol_inum, struct bch_hash_info *,
56                        const struct qstr *, subvol_inum *, u64 *,
57                        const struct qstr *, subvol_inum *, u64 *,
58                        enum bch_rename_mode);
59
60 int __bch2_dirent_lookup_trans(struct btree_trans *, struct btree_iter *,
61                                subvol_inum, const struct bch_hash_info *,
62                                const struct qstr *, subvol_inum *, unsigned);
63 u64 bch2_dirent_lookup(struct bch_fs *, subvol_inum,
64                        const struct bch_hash_info *,
65                        const struct qstr *, subvol_inum *);
66
67 int bch2_empty_dir_trans(struct btree_trans *, subvol_inum);
68 int bch2_readdir(struct bch_fs *, subvol_inum, struct dir_context *);
69
70 #endif /* _BCACHEFS_DIRENT_H */