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// Copyright (c) 2004-2010 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// Implements a Session of a Symbian OS server for the RUsbMassStorage API
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//
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//
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/**
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@file
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@internalTechnology
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*/
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#include <e32std.h>
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#include <e32base.h>
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#include "usbmsshared.h"
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#include "drivemanager.h"
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#include "cusbmassstoragecontroller.h"
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#include "cusbmassstorageserver.h"
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#include "cusbmassstoragesession.h"
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#include "OstTraceDefinitions.h"
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#ifdef OST_TRACE_COMPILER_IN_USE
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#include "cusbmassstoragesessionTraces.h"
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#endif
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/**
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Construct a Symbian OS session object.
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@param aServer Service the session will be a member of
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@param aMessage The message from the client.
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@return A new CUsbMassStorageSession object
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*/
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CUsbMassStorageSession* CUsbMassStorageSession::NewL(CUsbMassStorageServer& aServer)
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{
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CUsbMassStorageSession* r = new (ELeave) CUsbMassStorageSession(aServer);
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CleanupStack::PushL(r);
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r->ConstructL();
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CleanupStack::Pop();
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return r;
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}
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/**
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Constructor.
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@param aServer Service the session will be a member of
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*/
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CUsbMassStorageSession::CUsbMassStorageSession(CUsbMassStorageServer& aServer)
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: iUsbMsServer(aServer)
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{
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OstTraceFunctionEntry0(CUSBMASSSTORAGESESSION_100);
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}
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/**
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2nd Phase Construction.
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*/
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void CUsbMassStorageSession::ConstructL()
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{
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iUsbMsServer.IncrementSessionCount();
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if (iUsbMsServer.SessionCount() > 1)
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{
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OstTrace1(TRACE_SMASSSTORAGE_FS, CUSBMASSSTORAGESESSION_101,
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"iSessionCount: %d", iUsbMsServer.SessionCount());
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// Only one session is allowed
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User::Leave(KErrInUse);
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}
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}
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/**
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Destructor.
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*/
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CUsbMassStorageSession::~CUsbMassStorageSession()
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{
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iUsbMsServer.DecrementSessionCount();
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}
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/**
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Called when a message is received from the client.
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@param aMessage Message received from the client
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*/
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void CUsbMassStorageSession::ServiceL(const RMessage2& aMessage)
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{
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DispatchMessageL(aMessage);
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}
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/**
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Handles the request (in the form of a the message) received from the client
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@internalTechnology
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@param aMessage The received message
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*/
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void CUsbMassStorageSession::DispatchMessageL(const RMessage2& aMessage)
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{
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TInt ret = KErrNone;
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switch (aMessage.Function())
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{
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case EUsbMsStart:
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ret = Start(aMessage);
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break;
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case EUsbMsStop:
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ret = Stop();
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break;
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case EUsbMsShutdown:
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ret = Shutdown();
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break;
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default:
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aMessage.Panic(KUsbMsCliPncCat, EUsbMsPanicIllegalIPC);
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break;
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}
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aMessage.Complete(ret);
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}
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/**
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Client request to start the device.
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@return Any error that occurred or KErrNone
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*/
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TInt CUsbMassStorageSession::Start(const RMessage2& aMessage)
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{
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OstTraceFunctionEntry0(CUSBMASSSTORAGESESSION_103);
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TMassStorageConfig msConfig;
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TRAPD(err, GetMsConfigL(aMessage, msConfig));
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if (err != KErrNone)
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{
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OstTrace1(TRACE_SMASSSTORAGE_FS, CUSBMASSSTORAGESESSION_111,
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"Failed to get mass storage configuration data err=%d", err);
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return err;
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}
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return iUsbMsServer.Controller().Start(msConfig);
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}
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/**
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Client request to stop the device.
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@return Any error that occurred or KErrNone
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*/
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TInt CUsbMassStorageSession::Stop()
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{
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OstTraceFunctionEntry0(CUSBMASSSTORAGESESSION_104);
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TInt err = iUsbMsServer.Controller().Stop();
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return err;
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}
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/**
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Client request to shut down the server
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@return KErrNone
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*/
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TInt CUsbMassStorageSession::Shutdown()
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{
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OstTraceFunctionEntry0(CUSBMASSSTORAGESESSION_105);
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CActiveScheduler::Stop();
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return KErrNone;
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}
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/**
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Get mass storage configuration data from the received message
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*/
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void CUsbMassStorageSession::GetMsConfigL(const RMessage2& aMessage, TMassStorageConfig& aMsStorage)
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{
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aMessage.ReadL(0,aMsStorage.iVendorId);
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aMessage.ReadL(1,aMsStorage.iProductId);
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aMessage.ReadL(2,aMsStorage.iProductRev);
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}
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