// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "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:

//

#include <s32crypt.h>

#include "U32STD.H"

class TCachePage

	{

public:

	inline TDblQueLink& Link();

	inline void Deque();

	inline TBool IsQued() const;

	inline void Reque(TDblQue<TCachePage>& aQue);

private:

	inline const TDblQueLinkBase& Link() const;

public:

	TDblQueLink iLink;

	TCachePagePool* iOwner;

	TPageRef iRef;

	TPageChange iChange;

	};

//

class StorePagePool

	{

public:

	static TPageRef ExtendL(RStorePagePool& aPool,const TAny* aPage,TPageReclamation aReclamation,const CPBEncryptionBase* aKey=NULL);

	static void WriteL(RStorePagePool& aPool,TPageRef aRef,const TAny* aPage,TPageChange aChange,const CPBEncryptionBase* aKey=NULL);

	static void ReadL(RStorePagePool& aPool,TPageRef aRef,TAny* aPage,const CPBEncryptionBase* aKey=NULL);

	static void DeleteL(RStorePagePool& aPool,TPageRef aRef,const CPBEncryptionBase* aKey=NULL);

private:

	static void PadL(RWriteStream& aStream,TInt aLength);

	static void EncryptL(RWriteStream& aStream,const TAny* aPage,const CPBEncryptionBase& aKey);

	static void EncryptNewL(RWriteStream& aStream,const TAny* aPage,const CPBEncryptionBase& aKey);

	static void DecryptL(RReadStream& aStream,TAny* aPage,const CPBEncryptionBase& aKey);

	static void SeekL(MStreamBuf* aBuf,TInt aMark,TPageRef aRef,const CPBEncryptionBase* aKey);

	};

//

enum TPagePanic

	{

	EPageNotOpen,

	EPageChangeInvalid,

	EPageDoubleLock,

	EPageNotLocked,

	EPageCacheInUse,

	EPageCacheFull,

	EPageReclaimAvailable,

	EPageCipherTextOverrun,

	ECryptKeyUninitialised,

	EPageBadKeyType

	};

GLREF_C void Panic(TPagePanic aPanic);

#include "UP_STD.INL"