Function IoSetCompletionRoutineEx 

pub unsafe extern "system" fn IoSetCompletionRoutineEx(
    deviceobject: *const DEVICE_OBJECT,
    irp: *const IRP,
    completionroutine: PIO_COMPLETION_ROUTINE,
    context: *const c_void,
    invokeonsuccess: bool,
    invokeonerror: bool,
    invokeoncancel: bool,
) -> NTSTATUS