1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BCACHEFS_INODE_H
3 #define _BCACHEFS_INODE_H
7 extern const char * const bch2_inode_opts[];
9 const char *bch2_inode_invalid(const struct bch_fs *, struct bkey_s_c);
10 void bch2_inode_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
12 #define bch2_bkey_ops_inode (struct bkey_ops) { \
13 .key_invalid = bch2_inode_invalid, \
14 .val_to_text = bch2_inode_to_text, \
17 const char *bch2_inode_generation_invalid(const struct bch_fs *,
19 void bch2_inode_generation_to_text(struct printbuf *, struct bch_fs *,
22 #define bch2_bkey_ops_inode_generation (struct bkey_ops) { \
23 .key_invalid = bch2_inode_generation_invalid, \
24 .val_to_text = bch2_inode_generation_to_text, \
27 struct bch_inode_unpacked {
33 #define x(_name, _bits) u##_bits _name;
38 struct bkey_inode_buf {
39 struct bkey_i_inode inode;
41 #define x(_name, _bits) + 8 + _bits / 8
42 u8 _pad[0 + BCH_INODE_FIELDS()];
44 } __attribute__((packed, aligned(8)));
46 void bch2_inode_pack(struct bkey_inode_buf *, const struct bch_inode_unpacked *);
47 int bch2_inode_unpack(struct bkey_s_c_inode, struct bch_inode_unpacked *);
49 struct btree_iter *bch2_inode_peek(struct btree_trans *,
50 struct bch_inode_unpacked *, u64, unsigned);
51 int bch2_inode_write(struct btree_trans *, struct btree_iter *,
52 struct bch_inode_unpacked *);
54 void bch2_inode_init_early(struct bch_fs *,
55 struct bch_inode_unpacked *);
56 void bch2_inode_init_late(struct bch_inode_unpacked *, u64,
57 uid_t, gid_t, umode_t, dev_t,
58 struct bch_inode_unpacked *);
59 void bch2_inode_init(struct bch_fs *, struct bch_inode_unpacked *,
60 uid_t, gid_t, umode_t, dev_t,
61 struct bch_inode_unpacked *);
63 int bch2_inode_create(struct btree_trans *,
64 struct bch_inode_unpacked *,
67 int bch2_inode_rm(struct bch_fs *, u64);
69 int bch2_inode_find_by_inum_trans(struct btree_trans *, u64,
70 struct bch_inode_unpacked *);
71 int bch2_inode_find_by_inum(struct bch_fs *, u64, struct bch_inode_unpacked *);
73 static inline struct bch_io_opts bch2_inode_opts_get(struct bch_inode_unpacked *inode)
75 struct bch_io_opts ret = { 0 };
77 #define x(_name, _bits) \
78 if (inode->bi_##_name) \
79 opt_set(ret, _name, inode->bi_##_name - 1);
85 static inline void bch2_inode_opt_set(struct bch_inode_unpacked *inode,
86 enum inode_opt_id id, u64 v)
89 #define x(_name, ...) \
90 case Inode_opt_##_name: \
91 inode->bi_##_name = v; \
100 static inline u64 bch2_inode_opt_get(struct bch_inode_unpacked *inode,
101 enum inode_opt_id id)
104 #define x(_name, ...) \
105 case Inode_opt_##_name: \
106 return inode->bi_##_name;
114 static inline u8 mode_to_type(umode_t mode)
116 return (mode >> 12) & 15;
121 static inline unsigned nlink_bias(umode_t mode)
123 return S_ISDIR(mode) ? 2 : 1;
126 static inline void bch2_inode_nlink_inc(struct bch_inode_unpacked *bi)
128 if (bi->bi_flags & BCH_INODE_UNLINKED)
129 bi->bi_flags &= ~BCH_INODE_UNLINKED;
134 static inline void bch2_inode_nlink_dec(struct bch_inode_unpacked *bi)
136 BUG_ON(bi->bi_flags & BCH_INODE_UNLINKED);
140 bi->bi_flags |= BCH_INODE_UNLINKED;
143 static inline unsigned bch2_inode_nlink_get(struct bch_inode_unpacked *bi)
145 return bi->bi_flags & BCH_INODE_UNLINKED
147 : bi->bi_nlink + nlink_bias(bi->bi_mode);
150 static inline void bch2_inode_nlink_set(struct bch_inode_unpacked *bi,
154 bi->bi_nlink = nlink - nlink_bias(bi->bi_mode);
155 bi->bi_flags &= ~BCH_INODE_UNLINKED;
158 bi->bi_flags |= BCH_INODE_UNLINKED;
162 #ifdef CONFIG_BCACHEFS_DEBUG
163 void bch2_inode_pack_test(void);
165 static inline void bch2_inode_pack_test(void) {}
168 #endif /* _BCACHEFS_INODE_H */