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-rw-r--r--fs/bcachefs/inode.h217
1 files changed, 217 insertions, 0 deletions
diff --git a/fs/bcachefs/inode.h b/fs/bcachefs/inode.h
new file mode 100644
index 0000000000..88818a332b
--- /dev/null
+++ b/fs/bcachefs/inode.h
@@ -0,0 +1,217 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _BCACHEFS_INODE_H
+#define _BCACHEFS_INODE_H
+
+#include "bkey.h"
+#include "bkey_methods.h"
+#include "opts.h"
+
+enum bkey_invalid_flags;
+extern const char * const bch2_inode_opts[];
+
+int bch2_inode_invalid(struct bch_fs *, struct bkey_s_c,
+ enum bkey_invalid_flags, struct printbuf *);
+int bch2_inode_v2_invalid(struct bch_fs *, struct bkey_s_c,
+ enum bkey_invalid_flags, struct printbuf *);
+int bch2_inode_v3_invalid(struct bch_fs *, struct bkey_s_c,
+ enum bkey_invalid_flags, struct printbuf *);
+void bch2_inode_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
+
+int bch2_trans_mark_inode(struct btree_trans *, enum btree_id, unsigned,
+ struct bkey_s_c, struct bkey_i *, unsigned);
+int bch2_mark_inode(struct btree_trans *, enum btree_id, unsigned,
+ struct bkey_s_c, struct bkey_s_c, unsigned);
+
+#define bch2_bkey_ops_inode ((struct bkey_ops) { \
+ .key_invalid = bch2_inode_invalid, \
+ .val_to_text = bch2_inode_to_text, \
+ .trans_trigger = bch2_trans_mark_inode, \
+ .atomic_trigger = bch2_mark_inode, \
+ .min_val_size = 16, \
+})
+
+#define bch2_bkey_ops_inode_v2 ((struct bkey_ops) { \
+ .key_invalid = bch2_inode_v2_invalid, \
+ .val_to_text = bch2_inode_to_text, \
+ .trans_trigger = bch2_trans_mark_inode, \
+ .atomic_trigger = bch2_mark_inode, \
+ .min_val_size = 32, \
+})
+
+#define bch2_bkey_ops_inode_v3 ((struct bkey_ops) { \
+ .key_invalid = bch2_inode_v3_invalid, \
+ .val_to_text = bch2_inode_to_text, \
+ .trans_trigger = bch2_trans_mark_inode, \
+ .atomic_trigger = bch2_mark_inode, \
+ .min_val_size = 48, \
+})
+
+static inline bool bkey_is_inode(const struct bkey *k)
+{
+ return k->type == KEY_TYPE_inode ||
+ k->type == KEY_TYPE_inode_v2 ||
+ k->type == KEY_TYPE_inode_v3;
+}
+
+int bch2_inode_generation_invalid(struct bch_fs *, struct bkey_s_c,
+ enum bkey_invalid_flags, struct printbuf *);
+void bch2_inode_generation_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
+
+#define bch2_bkey_ops_inode_generation ((struct bkey_ops) { \
+ .key_invalid = bch2_inode_generation_invalid, \
+ .val_to_text = bch2_inode_generation_to_text, \
+ .min_val_size = 8, \
+})
+
+#if 0
+typedef struct {
+ u64 lo;
+ u32 hi;
+} __packed __aligned(4) u96;
+#endif
+typedef u64 u96;
+
+struct bch_inode_unpacked {
+ u64 bi_inum;
+ u64 bi_journal_seq;
+ __le64 bi_hash_seed;
+ u64 bi_size;
+ u64 bi_sectors;
+ u64 bi_version;
+ u32 bi_flags;
+ u16 bi_mode;
+
+#define x(_name, _bits) u##_bits _name;
+ BCH_INODE_FIELDS_v3()
+#undef x
+};
+
+struct bkey_inode_buf {
+ struct bkey_i_inode_v3 inode;
+
+#define x(_name, _bits) + 8 + _bits / 8
+ u8 _pad[0 + BCH_INODE_FIELDS_v3()];
+#undef x
+} __packed __aligned(8);
+
+void bch2_inode_pack(struct bkey_inode_buf *, const struct bch_inode_unpacked *);
+int bch2_inode_unpack(struct bkey_s_c, struct bch_inode_unpacked *);
+struct bkey_i *bch2_inode_to_v3(struct btree_trans *, struct bkey_i *);
+
+void bch2_inode_unpacked_to_text(struct printbuf *, struct bch_inode_unpacked *);
+
+int bch2_inode_peek(struct btree_trans *, struct btree_iter *,
+ struct bch_inode_unpacked *, subvol_inum, unsigned);
+
+int bch2_inode_write_flags(struct btree_trans *, struct btree_iter *,
+ struct bch_inode_unpacked *, enum btree_update_flags);
+
+static inline int bch2_inode_write(struct btree_trans *trans,
+ struct btree_iter *iter,
+ struct bch_inode_unpacked *inode)
+{
+ return bch2_inode_write_flags(trans, iter, inode, 0);
+}
+
+void bch2_inode_init_early(struct bch_fs *,
+ struct bch_inode_unpacked *);
+void bch2_inode_init_late(struct bch_inode_unpacked *, u64,
+ uid_t, gid_t, umode_t, dev_t,
+ struct bch_inode_unpacked *);
+void bch2_inode_init(struct bch_fs *, struct bch_inode_unpacked *,
+ uid_t, gid_t, umode_t, dev_t,
+ struct bch_inode_unpacked *);
+
+int bch2_inode_create(struct btree_trans *, struct btree_iter *,
+ struct bch_inode_unpacked *, u32, u64);
+
+int bch2_inode_rm(struct bch_fs *, subvol_inum);
+
+int bch2_inode_find_by_inum_nowarn_trans(struct btree_trans *,
+ subvol_inum,
+ struct bch_inode_unpacked *);
+int bch2_inode_find_by_inum_trans(struct btree_trans *, subvol_inum,
+ struct bch_inode_unpacked *);
+int bch2_inode_find_by_inum(struct bch_fs *, subvol_inum,
+ struct bch_inode_unpacked *);
+
+#define inode_opt_get(_c, _inode, _name) \
+ ((_inode)->bi_##_name ? (_inode)->bi_##_name - 1 : (_c)->opts._name)
+
+static inline void bch2_inode_opt_set(struct bch_inode_unpacked *inode,
+ enum inode_opt_id id, u64 v)
+{
+ switch (id) {
+#define x(_name, ...) \
+ case Inode_opt_##_name: \
+ inode->bi_##_name = v; \
+ break;
+ BCH_INODE_OPTS()
+#undef x
+ default:
+ BUG();
+ }
+}
+
+static inline u64 bch2_inode_opt_get(struct bch_inode_unpacked *inode,
+ enum inode_opt_id id)
+{
+ switch (id) {
+#define x(_name, ...) \
+ case Inode_opt_##_name: \
+ return inode->bi_##_name;
+ BCH_INODE_OPTS()
+#undef x
+ default:
+ BUG();
+ }
+}
+
+static inline u8 mode_to_type(umode_t mode)
+{
+ return (mode >> 12) & 15;
+}
+
+static inline u8 inode_d_type(struct bch_inode_unpacked *inode)
+{
+ return inode->bi_subvol ? DT_SUBVOL : mode_to_type(inode->bi_mode);
+}
+
+/* i_nlink: */
+
+static inline unsigned nlink_bias(umode_t mode)
+{
+ return S_ISDIR(mode) ? 2 : 1;
+}
+
+static inline unsigned bch2_inode_nlink_get(struct bch_inode_unpacked *bi)
+{
+ return bi->bi_flags & BCH_INODE_unlinked
+ ? 0
+ : bi->bi_nlink + nlink_bias(bi->bi_mode);
+}
+
+static inline void bch2_inode_nlink_set(struct bch_inode_unpacked *bi,
+ unsigned nlink)
+{
+ if (nlink) {
+ bi->bi_nlink = nlink - nlink_bias(bi->bi_mode);
+ bi->bi_flags &= ~BCH_INODE_unlinked;
+ } else {
+ bi->bi_nlink = 0;
+ bi->bi_flags |= BCH_INODE_unlinked;
+ }
+}
+
+int bch2_inode_nlink_inc(struct bch_inode_unpacked *);
+void bch2_inode_nlink_dec(struct btree_trans *, struct bch_inode_unpacked *);
+
+struct bch_opts bch2_inode_opts_to_opts(struct bch_inode_unpacked *);
+void bch2_inode_opts_get(struct bch_io_opts *, struct bch_fs *,
+ struct bch_inode_unpacked *);
+int bch2_inum_opts_get(struct btree_trans*, subvol_inum, struct bch_io_opts *);
+
+int bch2_inode_rm_snapshot(struct btree_trans *, u64, u32);
+int bch2_delete_dead_inodes(struct bch_fs *);
+
+#endif /* _BCACHEFS_INODE_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-06 01:26:43 +0000