ZwAlpcSetInformation

NTSTATUS __stdcall ZwAlpcSetInformation(
        VOID *PortHandle,
        _ALPC_PORT_INFORMATION_CLASS PortInformationClass,
        VOID *PortInformation,
        UINT64 Length){
  NTSTATUS result; 

  _disable();
  __readeflags();
  KiServiceInternal();
  return result;
}

Referenced by:

PopUmpoInitializeChannel
PopUmpoInitializeMonitorChannel