#ifndef	_SYS_FSTRANS_H
#define	_SYS_FSTRANS_H

struct fscow_handler;

enum fstrans_lock {
	FSTRANS_LOCK_SHARED	= 1,
	FSTRANS_LOCK_LAZY	= 2,
#ifdef _FSTRANS_API_PRIVATE
	FSTRANS_LOCK_EXCL	= 3,
#endif
};

enum fstrans_state {
	FSTRANS_STATE_NORMAL,
	FSTRANS_STATE_SUSPENDING,
	FSTRANS_STATE_SUSPENDED,
	FSTRANS_STATE_UNMOUNTED,
};

#define	FSTRANS_FLAG_NOWAIT	0x01
#define	FSTRANS_FLAG_INTR	0x02

void	fstrans_init(void);
int	fstrans_mount(struct mount *);
void	fstrans_unmount(struct mount *);

int	fstrans_start(struct mount *, enum fstrans_lock, int);
void	fstrans_done(struct mount *);

enum fstrans_state
	fstrans_getstate(struct mount *);
int	fstrans_setstate(struct mount *, enum fstrans_state);

int	fscow_establish(struct mount *, int (*)(void *, struct buf *, bool),
	    void *, struct fscow_handler **);
void	fscow_disestablish(struct mount *, struct fscow_handler *);
int	fscow_run(struct buf *, bool);

#endif	/* _SYS_FSTRANS_H */