diff -r 000000000000 -r c9bc50fca66e usbmgmt/usbmgr/host/functiondrivers/ms/msmm/server/src/msmmengine.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbmgmt/usbmgr/host/functiondrivers/ms/msmm/server/src/msmmengine.cpp	Tue Feb 02 02:02:59 2010 +0200
@@ -0,0 +1,170 @@
+/*
+* 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 "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
+ @internalComponent
+*/
+
+#include "msmmengine.h"
+#include "msmmnodebase.h"
+
+#include <usb/usblogger.h>
+
+#ifdef __FLOG_ACTIVE
+_LIT8(KLogComponent, "UsbHostMsmmServer");
+#endif
+
+CMsmmEngine::~CMsmmEngine()
+    {
+    LOG_FUNC
+    if (iDataEntrys)
+        {
+        delete iDataEntrys;
+        }
+    }
+
+CMsmmEngine* CMsmmEngine::NewL()
+    {
+    LOG_STATIC_FUNC_ENTRY
+    CMsmmEngine* self = CMsmmEngine::NewLC();
+    CleanupStack::Pop(self);
+    
+    return self;
+    }
+
+CMsmmEngine* CMsmmEngine::NewLC()
+    {
+    LOG_STATIC_FUNC_ENTRY
+    CMsmmEngine* self = new (ELeave) CMsmmEngine();
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    
+    return self;
+    }
+
+void CMsmmEngine::AddUsbMsDeviceL(const TUSBMSDeviceDescription& aDevice)
+    {
+    LOG_FUNC
+    TUsbMsDevice* device = SearchDevice(aDevice.iDeviceId);
+    if (!device)
+        {
+        device = new (ELeave) TUsbMsDevice(aDevice);
+        iDataEntrys->AddChild(device);
+        }
+    }
+
+TUsbMsInterface* CMsmmEngine::AddUsbMsInterfaceL(TInt aDeviceId, TUint8 aInterfaceNumber,
+        TInt32 aInterfaceToken)
+    {
+    LOG_FUNC
+    TUsbMsDevice* device = SearchDevice(aDeviceId);
+    if (!device)
+        {
+        User::Leave(KErrArgument);
+        }
+    TUsbMsInterface* interface = 
+        SearchInterface(device, aInterfaceNumber);
+    if (interface)
+        {
+        User::Leave(KErrAlreadyExists);
+        }
+    else
+        {
+        interface = AddUsbMsInterfaceNodeL(device, aInterfaceNumber, aInterfaceToken);
+        }
+    return interface;
+    }
+
+void CMsmmEngine::AddUsbMsLogicalUnitL(TInt aDeviceId,
+        TInt aInterfaceNumber, TInt aLogicalUnitNumber, TText aDrive)
+    {
+    LOG_FUNC
+    TUsbMsDevice* device = SearchDevice(aDeviceId);
+    if (!device)
+        {
+        User::Leave(KErrArgument); // A proper device node can't be found
+        }
+    
+    TUsbMsInterface* interface = SearchInterface(device, aInterfaceNumber);
+    if (interface)
+        {
+        AddUsbMsLogicalUnitNodeL(interface, aLogicalUnitNumber, aDrive);
+        }
+    else
+        {
+        User::Leave(KErrArgument); // A proper interface node can't be found
+        }
+    }
+
+void CMsmmEngine::RemoveUsbMsNode(TMsmmNodeBase* aNodeToBeRemoved)
+    {
+    LOG_FUNC
+    delete aNodeToBeRemoved;
+    }
+
+TUsbMsDevice* CMsmmEngine::SearchDevice(TInt aDeviceId) const
+    {
+    LOG_FUNC
+    return static_cast<TUsbMsDevice*>(
+            iDataEntrys->SearchInChildren(aDeviceId));
+    }
+
+TUsbMsInterface* CMsmmEngine::SearchInterface(TMsmmNodeBase* aDevice, 
+        TInt aInterfaceNumber) const
+    {
+    LOG_FUNC
+    return static_cast<TUsbMsInterface*>(
+            aDevice->SearchInChildren(aInterfaceNumber));
+    }
+
+CMsmmEngine::CMsmmEngine()
+    {
+    LOG_FUNC
+    }
+
+void CMsmmEngine::ConstructL()
+    {
+    LOG_FUNC
+    // Create the root of the whole node tree
+    iDataEntrys = new (ELeave) TMsmmNodeBase(0x0);
+    }
+
+TUsbMsInterface* CMsmmEngine::AddUsbMsInterfaceNodeL(TUsbMsDevice* iParent,
+        TInt aInterfaceNumber, TInt aInterfaceToken)
+    {
+    LOG_FUNC    
+    TUsbMsInterface* interface = new (ELeave) TUsbMsInterface(
+            aInterfaceNumber, aInterfaceToken);
+    iParent->AddChild(interface);
+    
+    return interface;
+    }
+
+TUsbMsLogicalUnit* CMsmmEngine::AddUsbMsLogicalUnitNodeL(
+        TUsbMsInterface* iParent, TInt aLogicalUnitNumber, 
+        TText aDrive)
+    {
+    LOG_FUNC
+    TUsbMsLogicalUnit* logicalUnit = new (ELeave) TUsbMsLogicalUnit(
+            aLogicalUnitNumber, aDrive);
+    iParent->AddChild(logicalUnit);
+    
+    return logicalUnit;
+    }
+
+// End of file