sdioctl
{ "sd", sdstrategy, sdopen, sdclose, sdioctl }, /*4*/
{ "sd", sdstrategy, sdopen, sdclose, sdioctl },
{ "sd", sdstrategy, sdopen, sdclose, sdioctl },
static dev_type_ioctl(sdioctl);
.d_ioctl = sdioctl,
.d_ioctl = sdioctl,