linux/fs/bcachefs/super-io.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_SUPER_IO_H
#define _BCACHEFS_SUPER_IO_H

#include "extents.h"
#include "eytzinger.h"
#include "super_types.h"
#include "super.h"
#include "sb-members.h"

#include <asm/byteorder.h>

static inline bool bch2_version_compatible(u16 version)
{ … }

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)
{ … }

#define field_to_type(_f, _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) …

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) …

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) …

#define bch2_sb_field_nr_entries(_f) …

void bch2_sb_field_delete(struct bch_sb_handle *, enum bch_sb_field_type);

extern const char * const bch2_sb_fields[];

struct bch_sb_field_ops { … };

static inline __le64 bch2_sb_magic(struct bch_fs *c)
{ … }

static inline __u64 jset_magic(struct bch_fs *c)
{ … }

static inline __u64 bset_magic(struct bch_fs *c)
{ … }

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_sb_realloc(struct bch_sb_handle *, unsigned);

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);

static inline void bch2_check_set_feature(struct bch_fs *c, unsigned feat)
{ … }

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 */