NtQueryInformationPort

NTSTATUS __stdcall NtQueryInformationPort(
        VOID *PortHandle,
        PORT_INFORMATION_CLASS PortInformationClass,
        VOID *PortInformation,
        UINT64 Length,
        UINT64 *ReturnLength){
  char PreviousMode; 
  __int64 v7; 
  int v8; 
  PVOID Object; 

  PreviousMode = KeGetCurrentThread()->PreviousMode;
  if( PreviousMode )
  {
    ProbeForWrite((UINT64)PortInformation, (unsigned int)Length, 4i64);
    if( ReturnLength )
    {
      v7 = 0x7FFFFFFF0000i64;
      if( (unsigned __int64)ReturnLength < 0x7FFFFFFF0000i64 )
        v7 = (__int64)ReturnLength;
      *(_DWORD *)v7 = *(_DWORD *)v7;
    }
  }
  if( !PortHandle )
    return -1073741821;
  Object = 0i64;
  v8 = ObReferenceObjectByHandle(PortHandle, 0x20000ui64, AlpcPortObjectType, PreviousMode, &Object, 0i64);
  if( v8 >= 0 )
  {
    if( ReturnLength )
      *(_DWORD *)ReturnLength = 0;
    HalPutDmaAdapter((PADAPTER_OBJECT)Object);
  }
  return v8;
}

Referenced by: