fd_type
struct fd_type type;
struct fd_type *ft;
struct fd_type *ft;
static struct fd_type fd_types[NUMTYPES] =
struct fd_type ft; /* the type descriptor */
*(struct fd_type *)ap->a_data = fd->ft;
fd->ft = *(struct fd_type *)ap->a_data;
#define FD_GTYPE _IOR('F', 62, struct fd_type) /* get drive type */
#define FD_STYPE _IOW('F', 63, struct fd_type) /* set drive type */
struct fd_type ft;
struct fd_type fdt;
struct fd_type fdt;