diff -r 000000000000 -r a41df078684a userlibandfileserver/fileserver/sfile/sf_plugin.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/userlibandfileserver/fileserver/sfile/sf_plugin.h	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,102 @@
+// Copyright (c) 1995-2009 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:
+// f32\sfile\sf_plugin.h
+// 
+//
+
+#if !defined(__SF_PLUGIN_H__)
+
+#define __SF_PLUGIN_H__
+
+#include "message.h"
+#include <f32fsys.h>
+#include <F32plugin.h>
+
+class CFsSyncMessageScheduler;
+class CFsInternalRequest;
+
+class TFsPluginThread
+	{
+public:
+	TFsPluginThread();
+public:
+	TInt iDriveNumber;
+	TBool iIsAvailable;
+	RMutex iPluginLock;
+	CPluginThread* iThread;
+	TUint iId;
+	};
+
+/**
+ * Plugin Manager
+ *
+ *	- Initialised in main thread
+ *
+ *	- Contains array of request chains which represent the
+ *	  plugins registered for each request type.
+ *	
+ *	- Plugins register their interest with each request type,
+ *	  specifying the associated thread and pre/post processing options.
+ */
+class FsPluginManager
+	{
+public:
+	static void InitialiseL();
+
+	static TInt MountPlugin(CFsPluginFactory& aPluginFactory, TInt aDrive, TInt aPos);
+	static void DismountPlugin(CFsPluginFactory& aPluginFactory, TInt aPos);
+
+	static TInt InstallPluginFactory(CFsPluginFactory* aFactory,RLibrary aLib);
+	static CFsPluginFactory* GetPluginFactory(const TDesC& aName);
+
+	static TInt NextPlugin(CFsPlugin*& aPlugin, CFsMessageRequest* aMsgRequest, TBool aLock, TBool aCheckCurrentOperation=ETrue);
+	static TInt PrevPlugin(CFsPlugin*& aPlugin, CFsMessageRequest* aMsgRequest, TBool aLock);
+	static TInt InsertInPluginStack(CFsPlugin*& aPlugin,TInt aPos);
+	static TInt IsInChain(TInt aUPos, TInt aPos,TInt aDrive, CFsPluginFactory* aPluginFactory);
+	static CFsPlugin* FindByUniquePosition(TInt aPos);
+
+	static TInt InitPlugin(CFsPlugin& aPlugin);
+	static void TransferRequests(CPluginThread* aPluginThread);
+	static void CancelPlugin(CFsPlugin* aPlugin,CSessionFs* aSession);
+	static TInt ChainCount();
+	static TInt Plugin(CFsPlugin*& aPlugin, TInt aPos);
+
+	static void LockChain();
+	static void UnlockChain();
+
+	static CFsPluginConn* CreatePluginConnL(TInt aUniquePosition, TUint aClientId);
+	static CFsPluginConn* GetPluginConnFromHandle(CSessionFs* aSession, TInt aHandle);
+
+	static TBool IsPluginConnThread(TThreadId tid, CFsPlugin* aPlugin);
+
+	static void DispatchSync(CFsRequest* aRequest);
+	static void CompleteSessionRequests(CSessionFs* aSession, TInt aValue, CFsInternalRequest* aRequest);
+
+private:
+	static TInt UpdateMountedDrive(CFsPlugin* aPlugin, CFsPluginFactory* aFactory,TInt aDrive);
+	static void GetNextCancelPluginOpRequest(CPluginThread* aPluginThread, CFsRequest*& aCancelPluginRequest);
+private:
+	static CFsObjectCon* iPluginFactories;
+	static CFsObjectCon* iPluginConns;
+
+	static RPointerArray<CFsPlugin> iPluginChain;
+	static RFastLock iChainLock;
+
+	static CFsSyncMessageScheduler* iScheduler;
+
+	friend class RequestAllocator;
+	};
+
+#endif // __SF_PLUGIN_H
+