+/* 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);
-struct bch_sb_field *bch2_fs_sb_field_resize(struct bch_fs *,
- enum bch_sb_field_type, unsigned);
+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;
+}
+
+void bch2_version_to_text(struct printbuf *, unsigned);
+unsigned bch2_latest_compatible_version(unsigned);
+
+static inline size_t bch2_sb_field_bytes(struct bch_sb_field *f)
+{
+ return le32_to_cpu(f->u64s) * sizeof(u64);
+}
#define field_to_type(_f, _name) \
container_of_or_null(_f, struct bch_sb_field_##_name, field)
-#define BCH_SB_FIELD_TYPE(_name) \
-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 struct bch_sb_field_##_name * \
-bch2_fs_sb_resize_##_name(struct bch_fs *c, unsigned u64s) \
-{ \
- return field_to_type(bch2_fs_sb_field_resize(c, \
- BCH_SB_FIELD_##_name, u64s), _name); \
-}
+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)
-BCH_SB_FIELD_TYPE(journal);
-BCH_SB_FIELD_TYPE(members);
-BCH_SB_FIELD_TYPE(crypt);
-BCH_SB_FIELD_TYPE(replicas);
+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_dev_exists(struct bch_sb *sb,
- struct bch_sb_field_members *mi,
- unsigned dev)
-{
- return dev < sb->nr_devices &&
- !bch2_is_zero(mi->members[dev].uuid.b, sizeof(uuid_le));
-}
+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)
-static inline bool bch2_sb_test_feature(struct bch_sb *sb,
- enum bch_sb_features f)
-{
- unsigned w = f / 64;
- unsigned b = f % 64;
+#define bch2_sb_field_nr_entries(_f) \
+ (_f ? ((bch2_sb_field_bytes(&_f->field) - sizeof(*_f)) / \
+ sizeof(_f->entries[0])) \
+ : 0)
- return le64_to_cpu(sb->features[w]) & (1ULL << b);
-}
+void bch2_sb_field_delete(struct bch_sb_handle *, enum bch_sb_field_type);
-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;
+extern const char * const bch2_sb_fields[];
- le64_add_cpu(&sb->features[w], 1ULL << b);
- }
-}
+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;
}
return __le64_to_cpu(bch2_sb_magic(c) ^ JSET_MAGIC);
}
-static inline __u64 pset_magic(struct bch_fs *c)
-{
- return __le64_to_cpu(bch2_sb_magic(c) ^ PSET_MAGIC);
-}
-
static inline __u64 bset_magic(struct bch_fs *c)
{
return __le64_to_cpu(bch2_sb_magic(c) ^ BSET_MAGIC);
}
-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),
- .state = BCH_MEMBER_STATE(mi),
- .tier = BCH_MEMBER_TIER(mi),
- .replacement = BCH_MEMBER_REPLACEMENT(mi),
- .discard = BCH_MEMBER_DISCARD(mi),
- .data_allowed = BCH_MEMBER_DATA_ALLOWED(mi),
- .valid = !bch2_is_zero(mi->uuid.b, sizeof(uuid_le)),
- };
-}
-
int bch2_sb_to_fs(struct bch_fs *, struct bch_sb *);
int bch2_sb_from_fs(struct bch_fs *, struct bch_dev *);
void bch2_free_super(struct bch_sb_handle *);
-int bch2_super_realloc(struct bch_sb_handle *, unsigned);
-
-const char *bch2_sb_validate_journal(struct bch_sb *,
- struct bch_member_cpu);
-const char *bch2_sb_validate(struct bch_sb_handle *);
-
-const char *bch2_read_super(const char *, struct bch_opts,
- struct bch_sb_handle *);
-void bch2_write_super(struct bch_fs *);
-
-/* replicas: */
-
-bool bch2_sb_has_replicas(struct bch_fs *, struct bkey_s_c_extent,
- enum bch_data_type);
-bool bch2_sb_has_replicas_devlist(struct bch_fs *, struct bch_devs_list *,
- enum bch_data_type);
-int bch2_check_mark_super(struct bch_fs *, struct bkey_s_c_extent,
- enum bch_data_type);
-int bch2_check_mark_super_devlist(struct bch_fs *, struct bch_devs_list *,
- enum bch_data_type);
-
-int bch2_cpu_replicas_to_text(struct bch_replicas_cpu *, char *, size_t);
-int bch2_sb_replicas_to_text(struct bch_sb_field_replicas *, char *, size_t);
-
-struct replicas_status {
- struct {
- unsigned nr_online;
- unsigned nr_offline;
- } replicas[BCH_DATA_NR];
-};
-
-struct replicas_status __bch2_replicas_status(struct bch_fs *,
- struct bch_devs_mask);
-struct replicas_status bch2_replicas_status(struct bch_fs *);
-bool bch2_have_enough_devs(struct bch_fs *, struct replicas_status, unsigned);
+int bch2_sb_realloc(struct bch_sb_handle *, unsigned);
-unsigned bch2_replicas_online(struct bch_fs *, bool);
-unsigned bch2_dev_has_data(struct bch_fs *, struct bch_dev *);
+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);
-int bch2_replicas_gc_end(struct bch_fs *, int);
-int bch2_replicas_gc_start(struct bch_fs *, unsigned);
-
-/* iterate over superblock replicas - used by userspace tools: */
-
-static inline struct bch_replicas_entry *
-replicas_entry_next(struct bch_replicas_entry *i)
+static inline void bch2_check_set_feature(struct bch_fs *c, unsigned feat)
{
- return (void *) i + offsetof(struct bch_replicas_entry, devs) + i->nr;
+ if (!(c->sb.features & (1ULL << feat)))
+ __bch2_check_set_feature(c, feat);
}
-#define for_each_replicas_entry(_r, _i) \
- for (_i = (_r)->entries; \
- (void *) (_i) < vstruct_end(&(_r)->field) && (_i)->data_type;\
- (_i) = replicas_entry_next(_i))
+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