diff -r 000000000000 -r bde4ae8d615e os/kernelhwsrv/userlibandfileserver/fileserver/shostmassstorage/msproxy/hostusbmsfactory.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/kernelhwsrv/userlibandfileserver/fileserver/shostmassstorage/msproxy/hostusbmsfactory.cpp	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,106 @@
+// 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
+*/
+
+#include <f32fsys.h>
+#include <e32property.h>
+
+#include "hostusbmsproxy.h"
+#include "hostusbmsfactory.h"
+#include "debug.h"
+
+CUsbHostMsProxyDriveFactory::CUsbHostMsProxyDriveFactory()
+	{
+	__MSFNSLOG
+	}
+
+CUsbHostMsProxyDriveFactory::~CUsbHostMsProxyDriveFactory()
+	{
+	__MSFNSLOG
+	}
+
+TInt CUsbHostMsProxyDriveFactory::Install()
+	{
+	__MSFNSLOG
+	_LIT(KLoggerName,"usbhostms");
+	return SetName(&KLoggerName);
+	}
+
+TInt CUsbHostMsProxyDriveFactory::CreateProxyDrive(CProxyDrive*& aMountProxyDrive,CMountCB* aMount)
+	{
+	__MSFNSLOG
+    aMountProxyDrive = new CUsbHostMsProxyDrive(aMount,this);
+    return (aMountProxyDrive==NULL) ? KErrNoMemory : KErrNone;
+	}
+
+
+extern "C" {
+
+
+/* 
+Create the proxy drive factory object for the usbhost mass storage proxy
+*/
+EXPORT_C CExtProxyDriveFactory* CreateFileSystem()
+	{
+	__MSFNSLOG
+	return new CUsbHostMsProxyDriveFactory();
+	}
+}
+
+/*
+This function will be called to kick off a speculative probe for USB mass storage devices.
+This function issues an application session request (through publish and subscribe) to the USB manager.
+Upon USB Manager receiving this application session request in consent with the USB watcher application,
+the Bus request is passed to the OTG  component to bringup the VBus, thus enumerating the mass storage
+devices Upon enumerating the FDF will communicate with the Mount Manager which will allocate mass storage 
+drives for the logical units and continues drive access through the Usb host mass storage proxy drive.
+
+Ps: Note that the this request cant be handled by the MSC since, in the scenario where MSC is not running
+initially, the request will try to create the process. Creation of process will involve the file server inturn
+to load the MSC binary (.exe) to run. Since the RMessages are handled sequentially, the file server would not
+be able to service the request until the AsyncEnuerate is completed. Where, the process creation will wait 
+for the rendezvous to complete creating the deadlock situation. Hence the application session request is handled
+in the factory object itself!
+*/
+void CUsbHostMsProxyDriveFactory::AsyncEnumerate()
+{
+	__MSFNSLOG
+
+	RProperty prop;
+	TInt ret;
+
+	/* The property category is the USB manager */
+	const TUid KUidUsbManCategory={0x101fe1db};
+	/* The Key used is #6 for the Usb request session */
+	const TInt KUsbRequestSessionProperty = 6;
+
+	/* By this time the property should be available and allow us to get the handle.
+		If the property is not created (for some reason), we do not have anything to do */
+	ret = prop.Attach(KUidUsbManCategory, KUsbRequestSessionProperty);
+    __PXYPRINT1(_L("Property attach returned %d"),ret);
+	if(ret == KErrNone)
+    {
+		/* The Usb Manager does not evaluate the value passed through this property. 
+			We pass 1 (an arbitary value) for completion */
+		ret = prop.Set(KUidUsbManCategory, KUsbRequestSessionProperty, 1); 
+	     __PXYPRINT1(_L("Property set returned %d"),ret);
+		prop.Close();
+	}
+}
+