RtlGetNtProductType

char __fastcall RtlGetNtProductType(_NT_PRODUCT_TYPE *a1){
  __int64 v2; 
  __int64 v3; 
  INT64 v4; 
  char v5; 
  int v6; 
  __int64 v7; 
  INT64 *v8; 

  if( PsIsCurrentThreadInServerSilo() )
  {
    LOBYTE(v6) = KeIsExecutingInArbitraryThreadContext();
    if( v6 || (LODWORD(v7) = PsGetThreadServerSilo((INT64)KeGetCurrentThread()), !v7) )
      v8 = &PspHostSiloGlobals;
    else
      v8 = *(INT64 **)(v7 + 1272);
    v5 = 1;
    *a1 = *(_NT_PRODUCT_TYPE *)(v8[141] + 16);
  }
  else
  {
    v5 = 1;
    if( KUSER_SHARED_DATA.ProductTypeIsValid )
    {
      *a1 = KUSER_SHARED_DATA.NtProductType;
    }
    else if( KeGetCurrentIrql() > 1u || (int)RtlpGetNtProductTypeFromRegistry(a1, v2, v3, v4) < 0 )
    {
      *a1 = NtProductWinNt;
      return 0;
    }
  }
  return v5;
}

Referenced by: