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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _BCACHEFS_DIRENT_H
3#define _BCACHEFS_DIRENT_H
4
5#include "str_hash.h"
6
7extern const struct bch_hash_desc bch2_dirent_hash_desc;
8
9int bch2_dirent_validate(struct bch_fs *, struct bkey_s_c,
10 struct bkey_validate_context);
11void 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
19struct qstr;
20struct file;
21struct dir_context;
22struct bch_fs;
23struct bch_hash_info;
24struct bch_inode_info;
25
26struct qstr bch2_dirent_get_name(struct bkey_s_c_dirent d);
27
28static inline unsigned dirent_val_u64s(unsigned len, unsigned cf_len)
29{
30 unsigned bytes = cf_len
31 ? offsetof(struct bch_dirent, d_cf_name_block.d_names) + len + cf_len
32 : offsetof(struct bch_dirent, d_name) + len;
33
34 return DIV_ROUND_UP(bytes, sizeof(u64));
35}
36
37int bch2_dirent_read_target(struct btree_trans *, subvol_inum,
38 struct bkey_s_c_dirent, subvol_inum *);
39
40static inline void dirent_copy_target(struct bkey_i_dirent *dst,
41 struct bkey_s_c_dirent src)
42{
43 dst->v.d_inum = src.v->d_inum;
44 dst->v.d_type = src.v->d_type;
45}
46
47int bch2_dirent_create_snapshot(struct btree_trans *, u32, u64, u32,
48 const struct bch_hash_info *, u8,
49 const struct qstr *, u64, u64 *,
50 enum btree_iter_update_trigger_flags);
51int bch2_dirent_create(struct btree_trans *, subvol_inum,
52 const struct bch_hash_info *, u8,
53 const struct qstr *, u64, u64 *, u64 *,
54 enum btree_iter_update_trigger_flags);
55
56static inline unsigned vfs_d_type(unsigned type)
57{
58 return type == DT_SUBVOL ? DT_DIR : type;
59}
60
61enum bch_rename_mode {
62 BCH_RENAME,
63 BCH_RENAME_OVERWRITE,
64 BCH_RENAME_EXCHANGE,
65};
66
67int bch2_dirent_rename(struct btree_trans *,
68 subvol_inum, struct bch_hash_info *, u64 *,
69 subvol_inum, struct bch_hash_info *, u64 *,
70 const struct qstr *, subvol_inum *, u64 *,
71 const struct qstr *, subvol_inum *, u64 *,
72 enum bch_rename_mode);
73
74int bch2_dirent_lookup_trans(struct btree_trans *, struct btree_iter *,
75 subvol_inum, const struct bch_hash_info *,
76 const struct qstr *, subvol_inum *, unsigned);
77u64 bch2_dirent_lookup(struct bch_fs *, subvol_inum,
78 const struct bch_hash_info *,
79 const struct qstr *, subvol_inum *);
80
81int bch2_empty_dir_snapshot(struct btree_trans *, u64, u32, u32);
82int bch2_empty_dir_trans(struct btree_trans *, subvol_inum);
83int bch2_readdir(struct bch_fs *, subvol_inum, struct dir_context *);
84
85int bch2_fsck_remove_dirent(struct btree_trans *, struct bpos);
86
87#endif /* _BCACHEFS_DIRENT_H */