MmGetIoSessionState

_IO_SESSION_STATE __stdcall MmGetIoSessionState(VOID *SessionObject, UINT64 *SessionId){
  __int64 v2; 

  v2 = *((_QWORD *)SessionObject + 3);
  if( SessionId )
    *(_DWORD *)SessionId = *(_DWORD *)(v2 + 8);
  return *(_DWORD *)(v2 + 1016);
}

Referenced by:

IoGetContainerInformation