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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef _BCACHEFS_INODE_H3#define _BCACHEFS_INODE_H4 5#include "bkey.h"6#include "bkey_methods.h"7#include "opts.h"8#include "snapshot.h"9 10enum bch_validate_flags;11extern const char * const bch2_inode_opts[];12 13int bch2_inode_validate(struct bch_fs *, struct bkey_s_c,14 enum bch_validate_flags);15int bch2_inode_v2_validate(struct bch_fs *, struct bkey_s_c,16 enum bch_validate_flags);17int bch2_inode_v3_validate(struct bch_fs *, struct bkey_s_c,18 enum bch_validate_flags);19void bch2_inode_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);20 21int __bch2_inode_has_child_snapshots(struct btree_trans *, struct bpos);22 23static inline int bch2_inode_has_child_snapshots(struct btree_trans *trans, struct bpos pos)24{25 return bch2_snapshot_is_leaf(trans->c, pos.snapshot) <= 026 ? __bch2_inode_has_child_snapshots(trans, pos)27 : 0;28}29 30int bch2_trigger_inode(struct btree_trans *, enum btree_id, unsigned,31 struct bkey_s_c, struct bkey_s,32 enum btree_iter_update_trigger_flags);33 34#define bch2_bkey_ops_inode ((struct bkey_ops) { \35 .key_validate = bch2_inode_validate, \36 .val_to_text = bch2_inode_to_text, \37 .trigger = bch2_trigger_inode, \38 .min_val_size = 16, \39})40 41#define bch2_bkey_ops_inode_v2 ((struct bkey_ops) { \42 .key_validate = bch2_inode_v2_validate, \43 .val_to_text = bch2_inode_to_text, \44 .trigger = bch2_trigger_inode, \45 .min_val_size = 32, \46})47 48#define bch2_bkey_ops_inode_v3 ((struct bkey_ops) { \49 .key_validate = bch2_inode_v3_validate, \50 .val_to_text = bch2_inode_to_text, \51 .trigger = bch2_trigger_inode, \52 .min_val_size = 48, \53})54 55static inline bool bkey_is_inode(const struct bkey *k)56{57 return k->type == KEY_TYPE_inode ||58 k->type == KEY_TYPE_inode_v2 ||59 k->type == KEY_TYPE_inode_v3;60}61 62int bch2_inode_generation_validate(struct bch_fs *, struct bkey_s_c,63 enum bch_validate_flags);64void bch2_inode_generation_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);65 66#define bch2_bkey_ops_inode_generation ((struct bkey_ops) { \67 .key_validate = bch2_inode_generation_validate, \68 .val_to_text = bch2_inode_generation_to_text, \69 .min_val_size = 8, \70})71 72#if 073typedef struct {74 u64 lo;75 u32 hi;76} __packed __aligned(4) u96;77#endif78typedef u64 u96;79 80struct bch_inode_unpacked {81 u64 bi_inum;82 u32 bi_snapshot;83 u64 bi_journal_seq;84 __le64 bi_hash_seed;85 u64 bi_size;86 u64 bi_sectors;87 u64 bi_version;88 u32 bi_flags;89 u16 bi_mode;90 91#define x(_name, _bits) u##_bits _name;92 BCH_INODE_FIELDS_v3()93#undef x94};95BITMASK(INODE_STR_HASH, struct bch_inode_unpacked, bi_flags, 20, 24);96 97struct bkey_inode_buf {98 struct bkey_i_inode_v3 inode;99 100#define x(_name, _bits) + 8 + _bits / 8101 u8 _pad[0 + BCH_INODE_FIELDS_v3()];102#undef x103};104 105void bch2_inode_pack(struct bkey_inode_buf *, const struct bch_inode_unpacked *);106int bch2_inode_unpack(struct bkey_s_c, struct bch_inode_unpacked *);107struct bkey_i *bch2_inode_to_v3(struct btree_trans *, struct bkey_i *);108 109void bch2_inode_unpacked_to_text(struct printbuf *, struct bch_inode_unpacked *);110 111int __bch2_inode_peek(struct btree_trans *, struct btree_iter *,112 struct bch_inode_unpacked *, subvol_inum, unsigned, bool);113 114static inline int bch2_inode_peek_nowarn(struct btree_trans *trans,115 struct btree_iter *iter,116 struct bch_inode_unpacked *inode,117 subvol_inum inum, unsigned flags)118{119 return __bch2_inode_peek(trans, iter, inode, inum, flags, false);120}121 122static inline int bch2_inode_peek(struct btree_trans *trans,123 struct btree_iter *iter,124 struct bch_inode_unpacked *inode,125 subvol_inum inum, unsigned flags)126{127 return __bch2_inode_peek(trans, iter, inode, inum, flags, true);128 int ret = bch2_inode_peek_nowarn(trans, iter, inode, inum, flags);129 return ret;130}131 132int bch2_inode_write_flags(struct btree_trans *, struct btree_iter *,133 struct bch_inode_unpacked *, enum btree_iter_update_trigger_flags);134 135static inline int bch2_inode_write(struct btree_trans *trans,136 struct btree_iter *iter,137 struct bch_inode_unpacked *inode)138{139 return bch2_inode_write_flags(trans, iter, inode, 0);140}141 142int __bch2_fsck_write_inode(struct btree_trans *, struct bch_inode_unpacked *);143int bch2_fsck_write_inode(struct btree_trans *, struct bch_inode_unpacked *);144 145void bch2_inode_init_early(struct bch_fs *,146 struct bch_inode_unpacked *);147void bch2_inode_init_late(struct bch_inode_unpacked *, u64,148 uid_t, gid_t, umode_t, dev_t,149 struct bch_inode_unpacked *);150void bch2_inode_init(struct bch_fs *, struct bch_inode_unpacked *,151 uid_t, gid_t, umode_t, dev_t,152 struct bch_inode_unpacked *);153 154int bch2_inode_create(struct btree_trans *, struct btree_iter *,155 struct bch_inode_unpacked *, u32, u64);156 157int bch2_inode_rm(struct bch_fs *, subvol_inum);158 159int bch2_inode_find_by_inum_nowarn_trans(struct btree_trans *,160 subvol_inum,161 struct bch_inode_unpacked *);162int bch2_inode_find_by_inum_trans(struct btree_trans *, subvol_inum,163 struct bch_inode_unpacked *);164int bch2_inode_find_by_inum(struct bch_fs *, subvol_inum,165 struct bch_inode_unpacked *);166 167#define inode_opt_get(_c, _inode, _name) \168 ((_inode)->bi_##_name ? (_inode)->bi_##_name - 1 : (_c)->opts._name)169 170static inline void bch2_inode_opt_set(struct bch_inode_unpacked *inode,171 enum inode_opt_id id, u64 v)172{173 switch (id) {174#define x(_name, ...) \175 case Inode_opt_##_name: \176 inode->bi_##_name = v; \177 break;178 BCH_INODE_OPTS()179#undef x180 default:181 BUG();182 }183}184 185static inline u64 bch2_inode_opt_get(struct bch_inode_unpacked *inode,186 enum inode_opt_id id)187{188 switch (id) {189#define x(_name, ...) \190 case Inode_opt_##_name: \191 return inode->bi_##_name;192 BCH_INODE_OPTS()193#undef x194 default:195 BUG();196 }197}198 199static inline u8 mode_to_type(umode_t mode)200{201 return (mode >> 12) & 15;202}203 204static inline u8 inode_d_type(struct bch_inode_unpacked *inode)205{206 return inode->bi_subvol ? DT_SUBVOL : mode_to_type(inode->bi_mode);207}208 209static inline u32 bch2_inode_flags(struct bkey_s_c k)210{211 switch (k.k->type) {212 case KEY_TYPE_inode:213 return le32_to_cpu(bkey_s_c_to_inode(k).v->bi_flags);214 case KEY_TYPE_inode_v2:215 return le64_to_cpu(bkey_s_c_to_inode_v2(k).v->bi_flags);216 case KEY_TYPE_inode_v3:217 return le64_to_cpu(bkey_s_c_to_inode_v3(k).v->bi_flags);218 default:219 return 0;220 }221}222 223/* i_nlink: */224 225static inline unsigned nlink_bias(umode_t mode)226{227 return S_ISDIR(mode) ? 2 : 1;228}229 230static inline unsigned bch2_inode_nlink_get(struct bch_inode_unpacked *bi)231{232 return bi->bi_flags & BCH_INODE_unlinked233 ? 0234 : bi->bi_nlink + nlink_bias(bi->bi_mode);235}236 237static inline void bch2_inode_nlink_set(struct bch_inode_unpacked *bi,238 unsigned nlink)239{240 if (nlink) {241 bi->bi_nlink = nlink - nlink_bias(bi->bi_mode);242 bi->bi_flags &= ~BCH_INODE_unlinked;243 } else {244 bi->bi_nlink = 0;245 bi->bi_flags |= BCH_INODE_unlinked;246 }247}248 249int bch2_inode_nlink_inc(struct bch_inode_unpacked *);250void bch2_inode_nlink_dec(struct btree_trans *, struct bch_inode_unpacked *);251 252static inline bool bch2_inode_should_have_bp(struct bch_inode_unpacked *inode)253{254 bool inode_has_bp = inode->bi_dir || inode->bi_dir_offset;255 256 return S_ISDIR(inode->bi_mode) ||257 (!inode->bi_nlink && inode_has_bp);258}259 260struct bch_opts bch2_inode_opts_to_opts(struct bch_inode_unpacked *);261void bch2_inode_opts_get(struct bch_io_opts *, struct bch_fs *,262 struct bch_inode_unpacked *);263int bch2_inum_opts_get(struct btree_trans*, subvol_inum, struct bch_io_opts *);264 265int bch2_inode_rm_snapshot(struct btree_trans *, u64, u32);266int bch2_delete_dead_inodes(struct bch_fs *);267 268#endif /* _BCACHEFS_INODE_H */269