1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _BCACHEFS_INODE_H 3 #define _BCACHEFS_INODE_H 4 5 #include "bkey.h" 6 #include "bkey_methods.h" 7 #include "opts.h" 8 9 enum bch_validate_flags; 10 extern const char * const bch2_inode_opts[]; 11 12 int bch2_inode_validate(struct bch_fs *, struct bkey_s_c, 13 enum bch_validate_flags); 14 int bch2_inode_v2_validate(struct bch_fs *, struct bkey_s_c, 15 enum bch_validate_flags); 16 int bch2_inode_v3_validate(struct bch_fs *, struct bkey_s_c, 17 enum bch_validate_flags); 18 void bch2_inode_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c); 19 20 int bch2_trigger_inode(struct btree_trans *, enum btree_id, unsigned, 21 struct bkey_s_c, struct bkey_s, 22 enum btree_iter_update_trigger_flags); 23 24 #define bch2_bkey_ops_inode ((struct bkey_ops) { \ 25 .key_validate = bch2_inode_validate, \ 26 .val_to_text = bch2_inode_to_text, \ 27 .trigger = bch2_trigger_inode, \ 28 .min_val_size = 16, \ 29 }) 30 31 #define bch2_bkey_ops_inode_v2 ((struct bkey_ops) { \ 32 .key_validate = bch2_inode_v2_validate, \ 33 .val_to_text = bch2_inode_to_text, \ 34 .trigger = bch2_trigger_inode, \ 35 .min_val_size = 32, \ 36 }) 37 38 #define bch2_bkey_ops_inode_v3 ((struct bkey_ops) { \ 39 .key_validate = bch2_inode_v3_validate, \ 40 .val_to_text = bch2_inode_to_text, \ 41 .trigger = bch2_trigger_inode, \ 42 .min_val_size = 48, \ 43 }) 44 45 static inline bool bkey_is_inode(const struct bkey *k) 46 { 47 return k->type == KEY_TYPE_inode || 48 k->type == KEY_TYPE_inode_v2 || 49 k->type == KEY_TYPE_inode_v3; 50 } 51 52 int bch2_inode_generation_validate(struct bch_fs *, struct bkey_s_c, 53 enum bch_validate_flags); 54 void bch2_inode_generation_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c); 55 56 #define bch2_bkey_ops_inode_generation ((struct bkey_ops) { \ 57 .key_validate = bch2_inode_generation_validate, \ 58 .val_to_text = bch2_inode_generation_to_text, \ 59 .min_val_size = 8, \ 60 }) 61 62 #if 0 63 typedef struct { 64 u64 lo; 65 u32 hi; 66 } __packed __aligned(4) u96; 67 #endif 68 typedef u64 u96; 69 70 struct bch_inode_unpacked { 71 u64 bi_inum; 72 u32 bi_snapshot; 73 u64 bi_journal_seq; 74 __le64 bi_hash_seed; 75 u64 bi_size; 76 u64 bi_sectors; 77 u64 bi_version; 78 u32 bi_flags; 79 u16 bi_mode; 80 81 #define x(_name, _bits) u##_bits _name; 82 BCH_INODE_FIELDS_v3() 83 #undef x 84 }; 85 86 struct bkey_inode_buf { 87 struct bkey_i_inode_v3 inode; 88 89 #define x(_name, _bits) + 8 + _bits / 8 90 u8 _pad[0 + BCH_INODE_FIELDS_v3()]; 91 #undef x 92 }; 93 94 void bch2_inode_pack(struct bkey_inode_buf *, const struct bch_inode_unpacked *); 95 int bch2_inode_unpack(struct bkey_s_c, struct bch_inode_unpacked *); 96 struct bkey_i *bch2_inode_to_v3(struct btree_trans *, struct bkey_i *); 97 98 void bch2_inode_unpacked_to_text(struct printbuf *, struct bch_inode_unpacked *); 99 100 int bch2_inode_peek_nowarn(struct btree_trans *, struct btree_iter *, 101 struct bch_inode_unpacked *, subvol_inum, unsigned); 102 int bch2_inode_peek(struct btree_trans *, struct btree_iter *, 103 struct bch_inode_unpacked *, subvol_inum, unsigned); 104 105 int bch2_inode_write_flags(struct btree_trans *, struct btree_iter *, 106 struct bch_inode_unpacked *, enum btree_iter_update_trigger_flags); 107 108 static inline int bch2_inode_write(struct btree_trans *trans, 109 struct btree_iter *iter, 110 struct bch_inode_unpacked *inode) 111 { 112 return bch2_inode_write_flags(trans, iter, inode, 0); 113 } 114 115 int __bch2_fsck_write_inode(struct btree_trans *, struct bch_inode_unpacked *, u32); 116 int bch2_fsck_write_inode(struct btree_trans *, struct bch_inode_unpacked *, u32); 117 118 void bch2_inode_init_early(struct bch_fs *, 119 struct bch_inode_unpacked *); 120 void bch2_inode_init_late(struct bch_inode_unpacked *, u64, 121 uid_t, gid_t, umode_t, dev_t, 122 struct bch_inode_unpacked *); 123 void bch2_inode_init(struct bch_fs *, struct bch_inode_unpacked *, 124 uid_t, gid_t, umode_t, dev_t, 125 struct bch_inode_unpacked *); 126 127 int bch2_inode_create(struct btree_trans *, struct btree_iter *, 128 struct bch_inode_unpacked *, u32, u64); 129 130 int bch2_inode_rm(struct bch_fs *, subvol_inum); 131 132 int bch2_inode_find_by_inum_nowarn_trans(struct btree_trans *, 133 subvol_inum, 134 struct bch_inode_unpacked *); 135 int bch2_inode_find_by_inum_trans(struct btree_trans *, subvol_inum, 136 struct bch_inode_unpacked *); 137 int bch2_inode_find_by_inum(struct bch_fs *, subvol_inum, 138 struct bch_inode_unpacked *); 139 140 #define inode_opt_get(_c, _inode, _name) \ 141 ((_inode)->bi_##_name ? (_inode)->bi_##_name - 1 : (_c)->opts._name) 142 143 static inline void bch2_inode_opt_set(struct bch_inode_unpacked *inode, 144 enum inode_opt_id id, u64 v) 145 { 146 switch (id) { 147 #define x(_name, ...) \ 148 case Inode_opt_##_name: \ 149 inode->bi_##_name = v; \ 150 break; 151 BCH_INODE_OPTS() 152 #undef x 153 default: 154 BUG(); 155 } 156 } 157 158 static inline u64 bch2_inode_opt_get(struct bch_inode_unpacked *inode, 159 enum inode_opt_id id) 160 { 161 switch (id) { 162 #define x(_name, ...) \ 163 case Inode_opt_##_name: \ 164 return inode->bi_##_name; 165 BCH_INODE_OPTS() 166 #undef x 167 default: 168 BUG(); 169 } 170 } 171 172 static inline u8 mode_to_type(umode_t mode) 173 { 174 return (mode >> 12) & 15; 175 } 176 177 static inline u8 inode_d_type(struct bch_inode_unpacked *inode) 178 { 179 return inode->bi_subvol ? DT_SUBVOL : mode_to_type(inode->bi_mode); 180 } 181 182 static inline u32 bch2_inode_flags(struct bkey_s_c k) 183 { 184 switch (k.k->type) { 185 case KEY_TYPE_inode: 186 return le32_to_cpu(bkey_s_c_to_inode(k).v->bi_flags); 187 case KEY_TYPE_inode_v2: 188 return le64_to_cpu(bkey_s_c_to_inode_v2(k).v->bi_flags); 189 case KEY_TYPE_inode_v3: 190 return le64_to_cpu(bkey_s_c_to_inode_v3(k).v->bi_flags); 191 default: 192 return 0; 193 } 194 } 195 196 /* i_nlink: */ 197 198 static inline unsigned nlink_bias(umode_t mode) 199 { 200 return S_ISDIR(mode) ? 2 : 1; 201 } 202 203 static inline unsigned bch2_inode_nlink_get(struct bch_inode_unpacked *bi) 204 { 205 return bi->bi_flags & BCH_INODE_unlinked 206 ? 0 207 : bi->bi_nlink + nlink_bias(bi->bi_mode); 208 } 209 210 static inline void bch2_inode_nlink_set(struct bch_inode_unpacked *bi, 211 unsigned nlink) 212 { 213 if (nlink) { 214 bi->bi_nlink = nlink - nlink_bias(bi->bi_mode); 215 bi->bi_flags &= ~BCH_INODE_unlinked; 216 } else { 217 bi->bi_nlink = 0; 218 bi->bi_flags |= BCH_INODE_unlinked; 219 } 220 } 221 222 int bch2_inode_nlink_inc(struct bch_inode_unpacked *); 223 void bch2_inode_nlink_dec(struct btree_trans *, struct bch_inode_unpacked *); 224 225 static inline bool bch2_inode_should_have_bp(struct bch_inode_unpacked *inode) 226 { 227 bool inode_has_bp = inode->bi_dir || inode->bi_dir_offset; 228 229 return S_ISDIR(inode->bi_mode) || 230 (!inode->bi_nlink && inode_has_bp); 231 } 232 233 struct bch_opts bch2_inode_opts_to_opts(struct bch_inode_unpacked *); 234 void bch2_inode_opts_get(struct bch_io_opts *, struct bch_fs *, 235 struct bch_inode_unpacked *); 236 int bch2_inum_opts_get(struct btree_trans*, subvol_inum, struct bch_io_opts *); 237 238 int bch2_inode_rm_snapshot(struct btree_trans *, u64, u32); 239 int bch2_delete_dead_inodes(struct bch_fs *); 240 241 #endif /* _BCACHEFS_INODE_H */ 242