diff -r 000000000000 -r a41df078684a userlibandfileserver/fileserver/smassstorage/cmassstoragefilesystem.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/userlibandfileserver/fileserver/smassstorage/cmassstoragefilesystem.cpp	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,425 @@
+// Copyright (c) 2004-2009 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:
+// CMassStorageFileSystem implementation.
+// 
+//
+
+/**
+ @file
+ @internalTechnology
+*/
+
+#include <f32file.h>
+#include "cmassstoragefilesystem.h"
+#include "cmassstoragemountcb.h"
+#include "massstoragedebug.h"
+#include "massstorage.h"
+
+_LIT(KMsFsyName, "MassStorageFileSystem");
+_LIT(KMsThreadName, "MassStorageThread");
+_LIT(KMsDeadThreadName, "MassStorageDeadThread");
+_LIT(KMsFsysSemName, "MassStorageSemaphore");
+LOCAL_D const TInt KMsFsyMajorVersionNumber=1;
+LOCAL_D const TInt KMsFsyMinorVersionNumber=0;
+
+CMassStorageFileSystem::CMassStorageFileSystem()
+	{
+	}
+
+CMassStorageFileSystem::~CMassStorageFileSystem()
+	{
+	//Kill the controller thread if it exists
+	delete iMassStorageController;
+	delete iMediaChanged;
+	RThread thread;
+	TInt err = thread.Open(KMsThreadName);
+	if (err == KErrNone)
+		{
+		thread.Kill(1); //Parameter is irrelevant
+		}
+	thread.Close();
+	iMsDrives.Close();
+	}
+
+CMassStorageFileSystem* CMassStorageFileSystem::NewL()
+	{
+	CMassStorageFileSystem*  self = new (ELeave) CMassStorageFileSystem();
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	CleanupStack::Pop(self);
+	return self;
+	}
+	
+void CMassStorageFileSystem::ConstructL()
+	{
+	iMediaChanged = new(ELeave) CArrayFixFlat<TBool>(KMaxDrives);
+	}
+
+/**
+Set the file system version and name
+
+@return Any of the standard Symbian error codes.
+*/
+TInt CMassStorageFileSystem::Install()
+	{
+	__PRINT(_L("CMassStorageFileSystem::Install In\n"));
+	iVersion=TVersion(KMsFsyMajorVersionNumber, KMsFsyMinorVersionNumber, KF32BuildVersionNumber);
+	TInt err = SetName(&KMsFsyName);
+	__PRINT(_L("CMassStorageFileSystem::Install Out\n"));
+	return err;
+	}
+
+TInt CMassStorageFileSystem::Remove()
+	{
+	__PRINT(_L("CMassStorageFileSystem::Remove In\n"));
+	TInt err = KErrNone;
+	if (iInstalled)
+		{
+		// Try connecting to the server to send a shutdown message.
+		// - If the class controller has a session in use, this will return KErrInUse
+		RUsbMassStorage usbMs;
+		err = usbMs.Connect();
+		if(err == KErrNone)
+			{
+			err = usbMs.Shutdown();
+			usbMs.Close();
+
+			if(err == KErrNone)
+				{
+				User::WaitForRequest(iThreadStat);
+				err = iThreadStat.Int();
+				}
+			else
+				{
+				__PRINT1(_L("CMassStorageFileSystem::Remove Shutdown Error %d\n"),err);
+				}
+			}
+		else
+			{
+			__PRINT1(_L("CMassStorageFileSystem::Remove Connect Error %d\n"),err);
+			}
+		}
+	__PRINT(_L("CMassStorageFileSystem::Remove Out\n"));
+	return(err);
+	}
+
+/**
+Creates a new Mass Storage mount object.
+
+@return A new CMassStorageMountCB
+@leave KErrNotReady if the Mass Storage controller is not running.
+*/
+CMountCB* CMassStorageFileSystem::NewMountL() const
+	{
+	if (!iRunning)
+		{
+		User::Leave(KErrNotReady);
+		}
+	return CMassStorageMountCB::NewL(iMsDrives);
+	}
+
+/**
+Sets the media attributes and type in the aInfo parameter to those of the specified drive.
+
+@param anInfo TDriveInfo object to store the drive information.
+@param aDriveNumber The number of the drive to get the information from.
+*/
+void CMassStorageFileSystem::DriveInfo(TDriveInfo& aInfo, TInt aDriveNumber) const
+	{
+	__PRINT(_L("CMassStorageFileSystem::DriveInfo In\n"));
+	TLocalDriveCapsV2Buf caps;
+	if (!IsValidLocalDriveMapping(aDriveNumber))
+		{
+		return;
+		}
+	(void)GetLocalDrive(aDriveNumber).Caps(caps);   
+    // error ignored as Caps always returns  valid Media and Drive attributes
+	aInfo.iMediaAtt=caps().iMediaAtt;
+    aInfo.iType = ::EMediaNotPresent;  // Media is not available to the file system
+	aInfo.iDriveAtt=caps().iDriveAtt;
+	__PRINT(_L("CMassStorageFileSystem::DriveInfo Out\n"));
+	}
+
+/**
+Returns a reference to the Mass Storage controller.
+
+@return Reference to the Mass Storage controller.
+*/
+CUsbMassStorageController& CMassStorageFileSystem::Controller()
+	{
+	return *iMassStorageController;
+	}
+
+/**
+Fill iMsDrives with a mapping of lun->drive number for supported mass storage drives
+
+*/
+TInt CMassStorageFileSystem::EnumerateMsDrivesL()
+	{
+	__PRINT(_L("CMassStorageFileSystem::EnumerateMsDrives In\n"));
+	iMsDrives.Reset();
+	TInt driveCount = 0;
+
+	TLocalDriveCapsV2Buf caps;
+	for (TInt i = EDriveC; i < KMaxDrives; i++)
+		{
+		caps.FillZ();
+		
+		if (IsValidLocalDriveMapping(i))
+			{
+			TInt err = GetLocalDrive(i).Caps(caps);
+			TInt locDrvNum = DriveNumberToLocalDriveNumber(i);
+			__PRINT2(_L("Caps: err=%d, att=%d\n"), err, caps().iDriveAtt);
+			
+			TBool isRemovable = err==KErrNotReady || (caps().iDriveAtt & KDriveAttRemovable);
+			__PRINT2(_L("EnumerateMsDrives: Drive %c: is %sremovable\n"),
+							'A'+i-EDriveA, 
+							isRemovable?_S(""):_S("NOT "));
+							
+			if (isRemovable)
+				{
+				//
+				// STF: Connect to the local drive here.  This gives us the media changed flag, and
+				//		our own TBusLocalDrive object for use by the proxy drive and controller.
+				//
+				TBool& mediaChanged = (*iMediaChanged).ExtendL();
+				mediaChanged = EFalse;
+				TBusLocalDrive* localDrive = new(ELeave) TBusLocalDrive;
+				iLocalDriveForMediaFlag.Append(*localDrive);
+				
+				TInt err=iLocalDriveForMediaFlag[driveCount].Connect(locDrvNum, mediaChanged);
+				if(err == KErrNone)
+					{
+					iMsDrives.Append(i);
+					}
+				driveCount++;
+				}
+			}
+		}
+
+	__PRINT1(_L("CMassStorageFileSystem::EnumerateMsDrives Out, %d MS drives found\n"), driveCount);
+	return driveCount;
+	}
+
+TBool CMassStorageFileSystem::IsExtensionSupported() const
+	{
+	return ETrue;
+	}
+
+/**
+Creates a TrapCleanup and ActiveScheduler and initializes the Mass Storage controller.
+Start the ActiveScheduler.
+
+@return Any of the standard Symbian error codes.
+*/
+TInt CMassStorageFileSystem::InitThread()
+	{
+	__PRINT(_L("CMassStorageFileSystem::InitThread In\n"));
+	
+	//Give the thread a name so we can kill it later
+	User::RenameThread(KMsThreadName);
+		
+	CTrapCleanup* cleanup = CTrapCleanup::New();
+	if (cleanup == NULL)
+		{
+		return KErrNoMemory;
+		}
+
+	TRAPD(err, InitThreadL());
+	
+	delete cleanup;
+	
+	__PRINT1(_L("CMassStorageFileSystem::InitThread Out, error=%d\n"), err);
+	return err;
+	}
+
+TInt CMassStorageFileSystem::InitThreadL()
+	{
+	__PRINT(_L("CMassStorageFileSystem::InitThreadL In\n"));
+	
+	RSemaphore gSemThreadReady;
+
+	TInt ret = gSemThreadReady.OpenGlobal(KMsFsysSemName);
+
+	if (ret != KErrNone && ret != KErrAlreadyExists)
+		{
+		User::Leave(ret);
+		}
+
+	// Determine which drives are available for Mass Storage.
+	// (this also creates a local TBusLocalDrive for use by the drive controller)
+	EnumerateMsDrivesL();
+
+	CActiveScheduler* sched = new CActiveScheduler;
+	if (sched == NULL)
+		{
+		gSemThreadReady.Signal();
+		User::Leave(KErrNoMemory);
+		}
+	CleanupStack::PushL(sched);
+	CActiveScheduler::Install(sched);
+
+	iMassStorageController = new CUsbMassStorageController;
+	if (iMassStorageController == NULL)
+		{
+		gSemThreadReady.Signal();
+		User::Leave(KErrNoMemory);
+		}
+	
+	__PRINT(_L("CMassStorageFileSystem::InitThread: Creating Mass Storage Controller\n"));
+	TRAPD(err, iMassStorageController->CreateL(iMsDrives));
+	if (err != KErrNone)
+		{
+		gSemThreadReady.Signal();
+		CActiveScheduler::Install(NULL);
+		User::Leave(err);
+		}
+	
+	CleanupStack::Pop(sched);
+
+	iRunning = ETrue;
+	gSemThreadReady.Signal();
+	gSemThreadReady.Close();
+	CActiveScheduler::Start();
+
+//========= stop thread ================
+	delete iMassStorageController;
+	iMassStorageController = NULL;
+	TInt i=0;
+	for (;i<iLocalDriveForMediaFlag.Count();i++)
+		{
+		iLocalDriveForMediaFlag[i].Disconnect();
+		}
+	iLocalDriveForMediaFlag.Reset();
+	(*iMediaChanged).Reset();	
+	delete sched;
+	iRunning = EFalse;
+	
+	__PRINT(_L("CMassStorageFileSystem::InitThread Out\n"));
+	return KErrNone;
+	}
+	
+/**
+Not supported in Mass Storage file system.
+
+@leave KErrNotReady
+*/
+CFileCB* CMassStorageFileSystem::NewFileL() const
+	{
+	__PRINT(_L("CMassStorageFileSystem::NewFileL In\n"));
+	User::Leave(KErrNotReady);
+	return NULL;
+	}
+
+/**
+Not supported in Mass Storage file system.
+
+@leave KErrNotReady
+*/
+CDirCB* CMassStorageFileSystem::NewDirL() const
+	{
+	User::Leave(KErrNotReady);
+	return NULL;
+	}
+
+/**
+Not supported in Mass Storage file system.
+
+@leave KErrNotReady
+*/
+CFormatCB* CMassStorageFileSystem::NewFormatL() const
+	{
+	User::Leave(KErrNotReady);
+	return NULL;
+	}
+
+/**
+Not supported in Mass Storage file system.
+
+@return KErrNotSupported
+*/
+TInt CMassStorageFileSystem::DefaultPath(TDes& /*aPath*/) const
+	{
+	return KErrNotSupported;
+	}
+
+/**
+Not supported in Mass Storage file system.
+
+@return KErrNotSupported
+*/
+TInt CMassStorageFileSystem::DriveList(TDriveList& /*aList*/) const
+	{
+	return KErrNotSupported;
+	}
+
+/**
+Thread entry point.
+*/
+LOCAL_C TInt MsInitThreadFn(TAny* aPtr)
+	{
+	User::SetCritical(User::ESystemCritical);
+	((CMassStorageFileSystem*)aPtr)->InitThread();
+	//Rename the thread so we can create a new one with the same original name later
+	User::RenameThread(KMsDeadThreadName);
+	return KErrNone;
+	}
+
+/**
+Standard entry point for file systems.
+Creates a new file system object and starts a new thread for the Mass Storage controller.
+*/
+extern "C" EXPORT_C CFileSystem* CreateFileSystem()
+	{
+	__PRINT(_L("CMassStorageFileSystem::CreateFileSystem In\n"));
+	RSemaphore gSemThreadReady;
+	TInt err = gSemThreadReady.CreateGlobal(KMsFsysSemName, 0);
+	if (err != KErrNone)
+		{
+		__PRINT1(_L("CMassStorageFileSystem::CreateFileSystem Out Semaphore Error %d\n"),err);
+		return NULL;
+		}
+
+	CFileSystem* msFsys = NULL;
+	TRAP(err,  msFsys = CMassStorageFileSystem::NewL());
+	if (err != KErrNone)
+		{
+		__PRINT1(_L("CMassStorageFileSystem::CreateFileSystem Out MSFS Error %d\n"),err);
+		gSemThreadReady.Close();
+		return NULL;
+		}
+
+	RThread msThread;
+	__PRINT(_L("CMassStorageFileSystem::CreateFileSystem: Creating Mass Storage thread\n"));
+	err = msThread.Create(KMsThreadName, MsInitThreadFn, KDefaultStackSize, NULL, msFsys);
+	if (err != KErrNone)
+		{
+		__PRINT1(_L("CMassStorageFileSystem::CreateFileSystem Out Thread Error %d\n"),err);
+		gSemThreadReady.Close();
+		return msFsys;
+		}
+	((CMassStorageFileSystem*)msFsys)->iInstalled=ETrue;
+
+
+	msThread.Logon(((CMassStorageFileSystem*)msFsys)->iThreadStat);
+	msThread.Resume();
+	gSemThreadReady.Wait();
+	gSemThreadReady.Close();
+	msThread.Close();
+	
+	__PRINT(_L("CMassStorageFileSystem::CreateFileSystem Out Clean\n"));
+	
+	return msFsys;
+	}
+