+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_SUPER_IO_H
#define _BCACHEFS_SUPER_IO_H
#include "eytzinger.h"
#include "super_types.h"
#include "super.h"
+#include "sb-members.h"
#include <asm/byteorder.h>
-struct bch_sb_field *bch2_sb_field_get(struct bch_sb *, enum bch_sb_field_type);
-struct bch_sb_field *bch2_sb_field_resize(struct bch_sb_handle *,
- enum bch_sb_field_type, unsigned);
-void bch2_sb_field_delete(struct bch_sb_handle *, enum bch_sb_field_type);
+static inline bool bch2_version_compatible(u16 version)
+{
+ return BCH_VERSION_MAJOR(version) <= BCH_VERSION_MAJOR(bcachefs_metadata_version_current) &&
+ version >= bcachefs_metadata_version_min;
+}
-#define field_to_type(_f, _name) \
- container_of_or_null(_f, struct bch_sb_field_##_name, field)
+void bch2_version_to_text(struct printbuf *, unsigned);
+unsigned bch2_latest_compatible_version(unsigned);
-#define x(_name, _nr) \
-static inline struct bch_sb_field_##_name * \
-bch2_sb_get_##_name(struct bch_sb *sb) \
-{ \
- return field_to_type(bch2_sb_field_get(sb, \
- BCH_SB_FIELD_##_name), _name); \
-} \
- \
-static inline struct bch_sb_field_##_name * \
-bch2_sb_resize_##_name(struct bch_sb_handle *sb, unsigned u64s) \
-{ \
- return field_to_type(bch2_sb_field_resize(sb, \
- BCH_SB_FIELD_##_name, u64s), _name); \
+static inline size_t bch2_sb_field_bytes(struct bch_sb_field *f)
+{
+ return le32_to_cpu(f->u64s) * sizeof(u64);
}
-BCH_SB_FIELDS()
-#undef x
+#define field_to_type(_f, _name) \
+ container_of_or_null(_f, struct bch_sb_field_##_name, field)
-extern const char * const bch2_sb_fields[];
+struct bch_sb_field *bch2_sb_field_get_id(struct bch_sb *, enum bch_sb_field_type);
+#define bch2_sb_field_get(_sb, _name) \
+ field_to_type(bch2_sb_field_get_id(_sb, BCH_SB_FIELD_##_name), _name)
-struct bch_sb_field_ops {
- const char * (*validate)(struct bch_sb *, struct bch_sb_field *);
- void (*to_text)(struct printbuf *, struct bch_sb *,
- struct bch_sb_field *);
-};
+struct bch_sb_field *bch2_sb_field_resize_id(struct bch_sb_handle *,
+ enum bch_sb_field_type, unsigned);
+#define bch2_sb_field_resize(_sb, _name, _u64s) \
+ field_to_type(bch2_sb_field_resize_id(_sb, BCH_SB_FIELD_##_name, _u64s), _name)
-static inline bool bch2_sb_test_feature(struct bch_sb *sb,
- enum bch_sb_features f)
-{
- unsigned w = f / 64;
- unsigned b = f % 64;
+struct bch_sb_field *bch2_sb_field_get_minsize_id(struct bch_sb_handle *,
+ enum bch_sb_field_type, unsigned);
+#define bch2_sb_field_get_minsize(_sb, _name, _u64s) \
+ field_to_type(bch2_sb_field_get_minsize_id(_sb, BCH_SB_FIELD_##_name, _u64s), _name)
- return le64_to_cpu(sb->features[w]) & (1ULL << b);
-}
+#define bch2_sb_field_nr_entries(_f) \
+ (_f ? ((bch2_sb_field_bytes(&_f->field) - sizeof(*_f)) / \
+ sizeof(_f->entries[0])) \
+ : 0)
-static inline void bch2_sb_set_feature(struct bch_sb *sb,
- enum bch_sb_features f)
-{
- if (!bch2_sb_test_feature(sb, f)) {
- unsigned w = f / 64;
- unsigned b = f % 64;
+void bch2_sb_field_delete(struct bch_sb_handle *, enum bch_sb_field_type);
- le64_add_cpu(&sb->features[w], 1ULL << b);
- }
-}
+extern const char * const bch2_sb_fields[];
+
+struct bch_sb_field_ops {
+ int (*validate)(struct bch_sb *, struct bch_sb_field *, struct printbuf *);
+ void (*to_text)(struct printbuf *, struct bch_sb *, struct bch_sb_field *);
+};
static inline __le64 bch2_sb_magic(struct bch_fs *c)
{
__le64 ret;
+
memcpy(&ret, &c->sb.uuid, sizeof(ret));
return ret;
}
void bch2_free_super(struct bch_sb_handle *);
int bch2_sb_realloc(struct bch_sb_handle *, unsigned);
-const char *bch2_sb_validate(struct bch_sb_handle *);
-
int bch2_read_super(const char *, struct bch_opts *, struct bch_sb_handle *);
+int bch2_read_super_silent(const char *, struct bch_opts *, struct bch_sb_handle *);
int bch2_write_super(struct bch_fs *);
+void __bch2_check_set_feature(struct bch_fs *, unsigned);
-/* BCH_SB_FIELD_journal: */
-
-static inline unsigned bch2_nr_journal_buckets(struct bch_sb_field_journal *j)
-{
- return j
- ? (__le64 *) vstruct_end(&j->field) - j->buckets
- : 0;
-}
-
-/* BCH_SB_FIELD_members: */
-
-static inline bool bch2_member_exists(struct bch_member *m)
+static inline void bch2_check_set_feature(struct bch_fs *c, unsigned feat)
{
- return !bch2_is_zero(m->uuid.b, sizeof(uuid_le));
+ if (!(c->sb.features & (1ULL << feat)))
+ __bch2_check_set_feature(c, feat);
}
-static inline bool bch2_dev_exists(struct bch_sb *sb,
- struct bch_sb_field_members *mi,
- unsigned dev)
-{
- return dev < sb->nr_devices &&
- bch2_member_exists(&mi->members[dev]);
-}
-
-static inline struct bch_member_cpu bch2_mi_to_cpu(struct bch_member *mi)
-{
- return (struct bch_member_cpu) {
- .nbuckets = le64_to_cpu(mi->nbuckets),
- .first_bucket = le16_to_cpu(mi->first_bucket),
- .bucket_size = le16_to_cpu(mi->bucket_size),
- .group = BCH_MEMBER_GROUP(mi),
- .state = BCH_MEMBER_STATE(mi),
- .replacement = BCH_MEMBER_REPLACEMENT(mi),
- .discard = BCH_MEMBER_DISCARD(mi),
- .data_allowed = BCH_MEMBER_DATA_ALLOWED(mi),
- .durability = BCH_MEMBER_DURABILITY(mi)
- ? BCH_MEMBER_DURABILITY(mi) - 1
- : 1,
- .valid = !bch2_is_zero(mi->uuid.b, sizeof(uuid_le)),
- };
-}
-
-/* BCH_SB_FIELD_clean: */
-
-struct jset_entry *
-bch2_journal_super_entries_add_common(struct bch_fs *,
- struct jset_entry *, u64);
-
-void bch2_sb_clean_renumber(struct bch_sb_field_clean *, int);
-
-int bch2_fs_mark_dirty(struct bch_fs *);
-void bch2_fs_mark_clean(struct bch_fs *);
+bool bch2_check_version_downgrade(struct bch_fs *);
+void bch2_sb_upgrade(struct bch_fs *, unsigned);
+void __bch2_sb_field_to_text(struct printbuf *, struct bch_sb *,
+ struct bch_sb_field *);
void bch2_sb_field_to_text(struct printbuf *, struct bch_sb *,
struct bch_sb_field *);
+void bch2_sb_layout_to_text(struct printbuf *, struct bch_sb_layout *);
+void bch2_sb_to_text(struct printbuf *, struct bch_sb *, bool, unsigned);
#endif /* _BCACHEFS_SUPER_IO_H */
projects / bcachefs-tools-debian / blobdiff