diff -r 000000000000 -r a41df078684a userlibandfileserver/fileserver/shostmassstorage/server/protocol/include/cscsiprotocol.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/userlibandfileserver/fileserver/shostmassstorage/server/protocol/include/cscsiprotocol.h	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,186 @@
+// Copyright (c) 2008-2009 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:
+//
+
+/**
+ @file
+ @internalTechnology
+*/
+
+#ifndef CSCSIPROTOCOL_H
+#define CSCSIPROTOCOL_H
+
+class CMassStorageFsm;
+
+class TSbcClientInterface;
+
+class RMediaChangeNotifier
+    {
+public:
+    RMediaChangeNotifier();
+    ~RMediaChangeNotifier();
+
+	void Register(const RMessage2& aMessage);
+    void DoNotifyL();
+    void DoCancelL();
+
+private:
+	void CompleteNotifierL(TInt);
+
+private:
+    /** Notification service */
+	RMessage2 iNotifier;
+    /** Flag to indicate that media change notification is active */
+	TBool iRegistered;
+    };
+
+
+/**
+SCSI Protocol procedures
+*/
+class CScsiProtocol: public CBase, public MProtocol, public MBlockTransferProtocol
+    {
+public:
+   /** SCSI state */
+   enum TScsiState
+        {
+        EConnected,
+        EDisconnected
+        };
+
+    static CScsiProtocol* NewL(TLun aLun, MTransport& aTransport);
+	~CScsiProtocol();
+private:
+    void ConstructL(TLun aLun);
+	CScsiProtocol(MTransport& aTransport);
+
+public:
+    void InitialiseUnitL();
+
+    // Stop unit command to uninitialise the lun
+    void UninitialiseUnitL();
+
+    // Read command to read the media
+    void ReadL(TPos aPos, TDes8& aCopybuf, TInt aLen);
+
+    // Write command to write to the media
+    void WriteL(TPos aPos, TDesC8& aCopybuf, TInt aLen);
+
+    // ReadCapacity command to find the capacity of the media
+    void GetCapacityL(TCapsInfo& aCapsInfo);
+
+    // unit testing
+    void CreateSbcInterfaceL(TUint32 aBlockLen, TUint32 aLastLba);
+
+	void DoScsiReadyCheckEventL();
+
+	void NotifyChange(const RMessage2& aMessage);
+    void ForceCompleteNotifyChangeL();
+    void CancelChangeNotifierL();
+	void CompleteNotifyChangeL();
+	void SuspendL();
+	void ResumeL();
+    TBool IsConnected();
+
+    // Supported Mass Storage commands
+    TInt MsInquiryL();
+    TInt MsTestUnitReadyL();
+    TInt MsStartStopUnitL(TBool aStart);
+    TInt MsPreventAllowMediaRemovalL(TBool aPrevent);
+
+    TInt MsReadCapacityL();
+    TInt MsModeSense10L();
+    TInt MsModeSense6L();
+
+    TInt MsRequestSenseL();
+
+    TBool MsIsSbcSet() const;
+    TBool MsIsRemovableMedia() const;
+    const TSenseInfo& MsSenseInfo() const;
+
+    // MBlockTransferProtocol interface
+    void BlockReadL(TPos aPos, TDes8& aBuf, TInt aLength);
+    void BlockWriteL(TPos aPos, TDesC8& aBuf, TUint aOffset, TInt aLength);
+
+private:
+    void ResetSbc();
+
+    void DoCheckConditionL();
+
+	TInt GetSystemWideSenseError(const TSenseInfo& aSenseInfo);
+	TInt ProcessAsCodes(const TSenseInfo& aSenseInfo);
+
+private:
+
+    /** State machine for device initialisation protocol */
+    CMassStorageFsm* iFsm;
+
+    /** SCSI SPC interface methods */
+    TSpcClientInterface iSpcInterface;
+    /** SCSI SBC interface methods */
+    TSbcClientInterface* iSbcInterface;
+
+    // Logical Unit properties
+    /** LU removable */
+    TBool iRemovableMedia;
+    /** LU write protected */
+    TBool iWriteProtect;
+
+    /** Result of the last SCSI command */
+    TSenseInfo iSenseInfo;
+
+    /** State of the LUN represented by this object */
+	TScsiState iState;
+
+    /** Notifier for media changes */
+    RMediaChangeNotifier iMediaChangeNotifier;
+    };
+
+
+/**
+Returns the state of the SBC interface. INQUIRY command is used to detect if
+device supports SBC and initialise the SBC interface.
+
+@return TBool ETrue is SBC interface is initialised
+*/
+inline TBool CScsiProtocol::MsIsSbcSet() const
+    {
+    return iSbcInterface ? ETrue : EFalse;
+    }
+
+/**
+Returns the device removable property. MODE SENSE command is used to detect if
+the device is removable.
+
+@return TBool ETrue if device is removable
+*/
+inline TBool CScsiProtocol::MsIsRemovableMedia() const
+    {
+    return iRemovableMedia;
+    }
+
+
+/**
+Helper to return current SenseInfo. SCSI REQUEST SENSE command sets the sense
+info. The protocol will retrieve device's sense info in the event of a SCSI
+command error.
+
+@return const TSenseInfo&
+*/
+inline const TSenseInfo& CScsiProtocol::MsSenseInfo() const
+    {
+    return iSenseInfo;
+    }
+
+#endif // CSCSIPROTOCOL_H