enum {	Tscsi	= 1,	Tata	= 2, 	Sok	= 0,	Ssoon	= 1,	Sfail	= 2, 	Nrb	= 32,	Pathlen	= 256,}; typedef struct Dtype Dtype;typedef struct Sdisk Sdisk; struct Dtype {	int	type;	char	*tname;	int	(*probe)(Sdisk*);	int	(*enable)(Sdisk*);	int	(*status)(Sdisk*, char*, int);}; struct Sdisk {	Sdisk	*next;	Dtype	*t;	int	fd;	Sfis;	char	path[Pathlen];	char	name[28];	char	status;	uchar	silent;	uvlong	lastcheck;	uvlong	lastlog;}; int	scsiprobe(Sdisk*);int	scsienable(Sdisk*);int	scsistatus(Sdisk*, char*, int);int	ataprobe(Sdisk*);int	ataenable(Sdisk*);int	atastatus(Sdisk*, char*, int); void	eprint(Sdisk*, char *, ...);