EtwSetInformation

NTSTATUS __stdcall EtwSetInformation(
        REGHANDLE RegHandle,
        _EVENT_INFO_CLASS InformationClass,
        PVOID EventInformation,
        ULONG InformationLength){
  NTSTATUS v4; 
  __int32 v5; 

  v4 = 0;
  if( RegHandle )
  {
    v5 = InformationClass - 2;
    if( v5 )
    {
      if( v5 != 1 )
        return -1073741808;
      if( EventInformation && InformationLength == 1 )
      {
        if( *(_BYTE *)EventInformation == 1 )
        {
          _InterlockedOr16((volatile signed __int16 *)(RegHandle + 98), 0x200u);
          return v4;
        }
        if( !*(_BYTE *)EventInformation )
        {
          _InterlockedAnd16((volatile signed __int16 *)(RegHandle + 98), 0xFDFFu);
          return v4;
        }
      }
    }
    else if( EventInformation && InformationLength - 3 <= 0x7FFC )
    {
      return EtwpSetProviderTraitsKm((_ETW_REG_ENTRY *)RegHandle, EventInformation, InformationLength);
    }
    return -1073741811;
  }
  return -1073741816;
}

Referenced by:

BapdRegisterEtwProvider
BapdWriteEtwEvents
HvlpEtwRegister
PopDiagInitialize
PsDispatchIumService
TraceLoggingRegisterEx_EtwRegister_EtwSetInformation