diff -r 000000000000 -r bde4ae8d615e os/security/cryptomgmtlibs/securitycommonutils/source/ipcstream/ipcbuf.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/security/cryptomgmtlibs/securitycommonutils/source/ipcstream/ipcbuf.cpp	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,98 @@
+/*
+* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+* Library to add s32strm support for IPC (ie. stream via multiple IPC read/writes instead of
+* copying to a buffer and streaming to/from there.
+*
+*/
+
+
+/**
+ @file
+*/
+#include "ipcbuf.h"
+
+
+EXPORT_C void RIpcBuf::Open(const RMessagePtr2& aMessage, TInt aMessageSlot)
+	{
+	iMessage = aMessage;
+	iMessageSlot = aMessageSlot;
+	iReadPos = 0;
+	iWritePos = 0;
+	}
+
+EXPORT_C TStreamPos RIpcBuf::DoSeekL(TMark aMark, TStreamLocation aLocation, TInt anOffset)
+	{
+
+	TInt size = iMessage.GetDesLengthL(iMessageSlot);
+
+	switch (aLocation)
+		{
+	case EStreamBeginning:
+		// do nothing
+		break;
+		
+	case EStreamMark:
+		if (aMark&ERead)
+			{
+			anOffset += iReadPos;
+			}
+		else if (aMark&EWrite)
+			{
+			anOffset += iWritePos;
+			}
+		break;
+		
+	case EStreamEnd:
+		anOffset += size;
+		break;
+		
+	default:
+		User::Panic(KIpcBufPanic, EIpcBufSeekUnknownLocation);
+		break;
+		}
+		
+	// offset can't be negative or greater than size
+	if (anOffset > size || anOffset < 0)
+		{
+		User::Panic(KIpcBufPanic, EIpcBufSeekBadOffset);
+		}
+		
+	if (aMark&ERead)
+		{
+		iReadPos = anOffset;
+		}
+	else if (aMark&EWrite)
+		{
+		iWritePos = anOffset;
+		}
+		
+	return TStreamPos(anOffset);
+	}
+	
+EXPORT_C TInt RIpcBuf::DoReadL(TAny *aPtr, TInt aMaxLength)
+	{
+	TPtr8 ptr((TUint8*)aPtr, aMaxLength);
+	iMessage.ReadL(iMessageSlot, ptr, iReadPos);
+	TInt len = ptr.Length();
+	iReadPos += len;
+	return len;
+	}
+	
+EXPORT_C void RIpcBuf::DoWriteL(const TAny* aPtr,TInt aLength)
+	{
+	TPtr8 ptr((TUint8*)aPtr, aLength, aLength);
+	iMessage.WriteL(iMessageSlot, ptr, iWritePos);
+	iWritePos += aLength;
+	}