Function IoBuildSynchronousFsdRequest 

pub unsafe extern "C" fn IoBuildSynchronousFsdRequest(
    MajorFunction: ULONG,
    DeviceObject: PDEVICE_OBJECT,
    Buffer: PVOID,
    Length: ULONG,
    StartingOffset: PLARGE_INTEGER,
    Event: PKEVENT,
    IoStatusBlock: PIO_STATUS_BLOCK,
) -> PIRP