fdrw
int fdrw(struct fcu_obj *, int, int, int, int, int, caddr_t, uint_t);
fdrw, /* read /write sector */
err = fdrw(fdc, unit, FDWRITE, 0, 0, 1,
static int fdrw(struct fdctlr *fdc, int, int, int, int, int, caddr_t, uint_t);
if (!(err = fdrw(fdc, unit, FDREAD, 0, 0,
fdrw(fdc, unit, FDREAD, 0, 0,
!(err = fdrw(fdc, unit, FDREAD, 0, 0, 1, (caddr_t)label,