1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BCACHEFS_INODE_H
3 #define _BCACHEFS_INODE_H
8 extern const char * const bch2_inode_opts[];
10 int bch2_inode_invalid(const struct bch_fs *, struct bkey_s_c, int, struct printbuf *);
11 int bch2_inode_v2_invalid(const struct bch_fs *, struct bkey_s_c, int, struct printbuf *);
12 int bch2_inode_v3_invalid(const struct bch_fs *, struct bkey_s_c, int, struct printbuf *);
13 void bch2_inode_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
15 #define bch2_bkey_ops_inode ((struct bkey_ops) { \
16 .key_invalid = bch2_inode_invalid, \
17 .val_to_text = bch2_inode_to_text, \
18 .trans_trigger = bch2_trans_mark_inode, \
19 .atomic_trigger = bch2_mark_inode, \
22 #define bch2_bkey_ops_inode_v2 ((struct bkey_ops) { \
23 .key_invalid = bch2_inode_v2_invalid, \
24 .val_to_text = bch2_inode_to_text, \
25 .trans_trigger = bch2_trans_mark_inode, \
26 .atomic_trigger = bch2_mark_inode, \
29 #define bch2_bkey_ops_inode_v3 ((struct bkey_ops) { \
30 .key_invalid = bch2_inode_v3_invalid, \
31 .val_to_text = bch2_inode_to_text, \
32 .trans_trigger = bch2_trans_mark_inode, \
33 .atomic_trigger = bch2_mark_inode, \
36 static inline bool bkey_is_inode(const struct bkey *k)
38 return k->type == KEY_TYPE_inode ||
39 k->type == KEY_TYPE_inode_v2 ||
40 k->type == KEY_TYPE_inode_v3;
43 int bch2_inode_generation_invalid(const struct bch_fs *, struct bkey_s_c,
44 int, struct printbuf *);
45 void bch2_inode_generation_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
47 #define bch2_bkey_ops_inode_generation ((struct bkey_ops) { \
48 .key_invalid = bch2_inode_generation_invalid, \
49 .val_to_text = bch2_inode_generation_to_text, \
56 } __packed __aligned(4) u96;
60 struct bch_inode_unpacked {
70 #define x(_name, _bits) u##_bits _name;
75 struct bkey_inode_buf {
76 struct bkey_i_inode_v3 inode;
78 #define x(_name, _bits) + 8 + _bits / 8
79 u8 _pad[0 + BCH_INODE_FIELDS_v3()];
81 } __packed __aligned(8);
83 void bch2_inode_pack(struct bkey_inode_buf *, const struct bch_inode_unpacked *);
84 int bch2_inode_unpack(struct bkey_s_c, struct bch_inode_unpacked *);
85 struct bkey_s_c bch2_inode_to_v3(struct btree_trans *, struct bkey_s_c);
87 void bch2_inode_unpacked_to_text(struct printbuf *, struct bch_inode_unpacked *);
89 int bch2_inode_peek(struct btree_trans *, struct btree_iter *,
90 struct bch_inode_unpacked *, subvol_inum, unsigned);
91 int bch2_inode_write(struct btree_trans *, struct btree_iter *,
92 struct bch_inode_unpacked *);
94 void bch2_inode_init_early(struct bch_fs *,
95 struct bch_inode_unpacked *);
96 void bch2_inode_init_late(struct bch_inode_unpacked *, u64,
97 uid_t, gid_t, umode_t, dev_t,
98 struct bch_inode_unpacked *);
99 void bch2_inode_init(struct bch_fs *, struct bch_inode_unpacked *,
100 uid_t, gid_t, umode_t, dev_t,
101 struct bch_inode_unpacked *);
103 int bch2_inode_create(struct btree_trans *, struct btree_iter *,
104 struct bch_inode_unpacked *, u32, u64);
106 int bch2_inode_rm(struct bch_fs *, subvol_inum);
108 int bch2_inode_find_by_inum_trans(struct btree_trans *, subvol_inum,
109 struct bch_inode_unpacked *);
110 int bch2_inode_find_by_inum(struct bch_fs *, subvol_inum,
111 struct bch_inode_unpacked *);
113 static inline struct bch_io_opts bch2_inode_opts_get(struct bch_inode_unpacked *inode)
115 struct bch_io_opts ret = { 0 };
117 #define x(_name, _bits) \
118 if (inode->bi_##_name) \
119 opt_set(ret, _name, inode->bi_##_name - 1);
125 static inline void bch2_inode_opt_set(struct bch_inode_unpacked *inode,
126 enum inode_opt_id id, u64 v)
129 #define x(_name, ...) \
130 case Inode_opt_##_name: \
131 inode->bi_##_name = v; \
140 static inline u64 bch2_inode_opt_get(struct bch_inode_unpacked *inode,
141 enum inode_opt_id id)
144 #define x(_name, ...) \
145 case Inode_opt_##_name: \
146 return inode->bi_##_name;
154 static inline struct bch_io_opts
155 io_opts(struct bch_fs *c, struct bch_inode_unpacked *inode)
157 struct bch_io_opts opts = bch2_opts_to_inode_opts(c->opts);
159 bch2_io_opts_apply(&opts, bch2_inode_opts_get(inode));
163 static inline u8 mode_to_type(umode_t mode)
165 return (mode >> 12) & 15;
168 static inline u8 inode_d_type(struct bch_inode_unpacked *inode)
170 return inode->bi_subvol ? DT_SUBVOL : mode_to_type(inode->bi_mode);
175 static inline unsigned nlink_bias(umode_t mode)
177 return S_ISDIR(mode) ? 2 : 1;
180 static inline unsigned bch2_inode_nlink_get(struct bch_inode_unpacked *bi)
182 return bi->bi_flags & BCH_INODE_UNLINKED
184 : bi->bi_nlink + nlink_bias(bi->bi_mode);
187 static inline void bch2_inode_nlink_set(struct bch_inode_unpacked *bi,
191 bi->bi_nlink = nlink - nlink_bias(bi->bi_mode);
192 bi->bi_flags &= ~BCH_INODE_UNLINKED;
195 bi->bi_flags |= BCH_INODE_UNLINKED;
199 int bch2_inode_nlink_inc(struct bch_inode_unpacked *);
200 void bch2_inode_nlink_dec(struct btree_trans *, struct bch_inode_unpacked *);
202 #endif /* _BCACHEFS_INODE_H */