diff -r 000000000000 -r c9bc50fca66e usbmgmt/usbmgr/host/functiondrivers/ms/msmm/server/src/msmmnodebase.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbmgmt/usbmgr/host/functiondrivers/ms/msmm/server/src/msmmnodebase.cpp	Tue Feb 02 02:02:59 2010 +0200
@@ -0,0 +1,184 @@
+/*
+* 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 "msmmnodebase.h"
+
+#include <usb/usblogger.h>
+
+#ifdef __FLOG_ACTIVE
+_LIT8(KLogComponent, "UsbHostMsmmServer");
+#endif
+
+TMsmmNodeBase::TMsmmNodeBase(TInt aIdentifier):
+iIdentifier(aIdentifier),
+iNextPeer(NULL),
+iFirstChild(NULL),
+iLastChild(NULL),
+iParent(NULL)
+    {
+    LOG_FUNC
+    }
+
+TMsmmNodeBase::~TMsmmNodeBase()
+    {
+    LOG_FUNC
+    // Remove current node from the parent node and destroy it.
+    DestroyNode(); 
+    }
+
+void TMsmmNodeBase::DestroyNode()
+    {
+    LOG_FUNC
+    TMsmmNodeBase* parentNode = iParent; 
+    TMsmmNodeBase* iterator(this);
+    TMsmmNodeBase* iteratorPrev(NULL);
+    TMsmmNodeBase* iteratorNext(NULL);
+    
+    if (parentNode)
+        {
+        // A parent node exists
+        iterator = parentNode->iFirstChild;
+        if (iterator)
+            {
+            // iteratorPrev equal NULL at beginning;
+            iteratorNext= iterator->iNextPeer;
+            }
+        // Go through each child node to find the node to be destroyed
+        while (iterator && (iterator != this))
+            {
+            iteratorPrev = iterator;
+            iterator = iteratorNext;
+            if(iteratorNext)
+                {
+                iteratorNext = iteratorNext->iNextPeer;
+                }
+            }
+        if (iterator)
+            {
+            // Matched node found
+            if (parentNode->iLastChild == iterator)
+                {
+                parentNode->iLastChild = iteratorPrev;
+                }
+            if (iteratorPrev)
+                {
+                iteratorPrev->iNextPeer = iteratorNext;
+                }
+            else
+                {
+                parentNode->iFirstChild = iteratorNext;
+                }
+            }
+        else
+            {
+            // No matched node
+            return;
+            }
+        }
+        
+    // Remove all children node
+    if (iFirstChild)
+        {
+        // Current node isn't a leaf node
+        iterator = iFirstChild;
+        iteratorNext= iterator->iNextPeer;
+        while (iterator)
+            {
+            delete iterator;
+            iterator = iteratorNext;
+            if (iteratorNext)
+                {
+                iteratorNext = iterator->iNextPeer;
+                }
+            }
+        }
+    }
+
+void TMsmmNodeBase::AddChild(TMsmmNodeBase* aChild)
+    {
+    LOG_FUNC
+    if (!iFirstChild)
+        {
+        iFirstChild = aChild;
+        }
+    else
+        {
+        iLastChild->iNextPeer = aChild;
+        }
+    iLastChild = aChild;
+    aChild->iParent = this;
+    }
+
+TMsmmNodeBase* TMsmmNodeBase::SearchInChildren(TInt aIdentifier)
+    {
+    LOG_FUNC
+    TMsmmNodeBase* iterator(iFirstChild);
+    
+    while (iterator)
+        {
+        if (iterator->iIdentifier == aIdentifier)
+            {
+            break;
+            }
+        iterator = iterator->iNextPeer;
+        }
+    
+    return iterator;
+    }
+
+// TUsbMsDevice
+// Function memeber
+TUsbMsDevice::TUsbMsDevice(const TUSBMSDeviceDescription& aDevice):
+TMsmmNodeBase(aDevice.iDeviceId),
+iDevice(aDevice)
+    {
+    LOG_FUNC
+    }
+
+// TUsbMsInterface
+// Function memeber
+TUsbMsInterface::TUsbMsInterface(TUint8 aInterfaceNumber, 
+        TUint32 aInterfaceToken):
+TMsmmNodeBase(aInterfaceNumber), 
+iInterfaceNumber(aInterfaceNumber),
+iInterfaceToken(aInterfaceToken)
+    {
+    LOG_FUNC
+    }
+
+TUsbMsInterface::~TUsbMsInterface()
+    {
+    LOG_FUNC
+    iUsbMsDevice.Close();
+    }
+
+// TUsbMsLogicalUnit
+// Function memeber
+TUsbMsLogicalUnit::TUsbMsLogicalUnit(TUint8 aLogicalUnitNumber, TText aDrive):
+TMsmmNodeBase(aLogicalUnitNumber),
+iLogicalUnitNumber(aLogicalUnitNumber),
+iDrive(aDrive)
+    {
+    LOG_FUNC
+    }
+
+// End of file