601         // Check if the file is in 'file sequential/non-rugged file' mode

   602         case KControlIoIsFileSequential:

   603         	{

   604         	TDrive* drive = aRequest->Drive();

   605         	if(!drive)

   606         		return KErrNotSupported;

   607         	

   608         	// RFs::ControlIO uses narrow descriptors, so convert narrow back to wide

   609         	TBuf8<KMaxPath> fileNameNarrow;

   610         	TInt r = aRequest->Read(2, fileNameNarrow);

   611         	if (r != KErrNone)

   612         		return r;

   613         	TFileName fileNameWide;

   614         	fileNameWide.Copy(fileNameNarrow);

   615         	

   616         	// Locate the file

   617         	CFileCB* file = drive->LocateFile(fileNameWide);

   618         	if(!file)

   619         		return KErrNotFound;

   620         	

   621         	// isFileSequential = 1 or 0 for EFileSequential mode enabled or disabled respectively

   622         	TUint8 isFileSequential = (file->IsSequentialMode() != 0);

   623         	TPtr8 pkgBuf(&isFileSequential,1,1);

   624         	aRequest->Write(3, pkgBuf);

   625         	

   626         	return KErrNone;

   627         	}