// Copyright (c) 1995-2009 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:

 // f32\sfile\sf_main.cpp

 // 

 //

 #include "sf_std.h"

 #include "sf_plugin.h"

 #include "sf_file_cache.h"	// for TClosedFileUtils

 #include "sf_memory_man.h"

 #ifdef __WINS__

 #include <emulator.h>

 #include <e32wins.h>

 #endif

 #include "d32btrace.h"

 // define this macro to enable tracing very early on in the boot sequence

 //#define __ENABLE_TRACE__

 #ifdef __EPOC32__

 _LIT(KStartupExeSysBinName,"Z:\\Sys\\Bin\\ESTART.EXE");

 #else

 _LIT(KStartupExeName,"E32STRT.EXE");

 _LIT(KStartupExeSysBinName,"E32STRT.EXE");

 #endif

 //const TInt KSessionNotifyListGranularity=16; //-- not used anywhere

 // patch ldds should specify this as their third uid

 //const TInt KPatchLddUidValue=0x100000cc; //-- not used anywhere

 _LIT(KFileServerName,"!FileServer");

 void CServerFs::New()

 //

 // Create a new CServerFs.

 //

 	{

 	TheFileServer=new CServerFs(EPriority);

 	__ASSERT_ALWAYS(TheFileServer!=NULL,Fault(EMainCreateServer));

 	TInt r = TheFileServer->iSessionQueueLock.CreateLocal();

 	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainCreateServer));

 	r=TheFileServer->Start(KFileServerName);

 	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainStartServer));

 	}

 CServerFs::CServerFs(TInt aPriority)

 //

 //Constructor.

 // 

 	: CServer2(aPriority,EGlobalSharableSessions)

 	{

 	}

 CServerFs::~CServerFs()

 //

 //Destructor.

 // 

 	{

 	iSessionQueueLock.Close();

 	}

 void CServerFs::RunL()

 // 

 // calls CServer2::RunL

 //

 	{

 	TInt fn = Message().Function();

 	// CServer2::DoConnectL() manipulates iSessionQ & so does CSession2::~CSession2().

 	// Unfortunately the session is deleted from a seperate thread (the disconnect 

 	// thread) so we need a lock to protect it.

 	if (fn == RMessage2::EConnect)

 		{

 		SessionQueueLockWait();		// lock

 		CServer2::RunL();

 		SessionQueueLockSignal();	// unlock

 		}

 	else

 		{

 		CServer2::RunL();

 		}

 	}

 CSessionFs* CServerFs::operator[](TInt anIndex)

 //

 // Indexing operator used by DoFsListOpenFiles

 //

 	{

 	__ASSERT_DEBUG(anIndex>=0,Fault(ESvrBadSessionIndex));

 	iSessionIter.SetToFirst();

 	while (anIndex--)

 		iSessionIter++;

 	CSessionFs* ses=(CSessionFs*)&(*iSessionIter);

 	return(ses);

 	}

 _LIT(KPrivatePath,"?:\\Private\\");

 CSession2* CServerFs::NewSessionL(const TVersion& aVersion,const RMessage2& aMessage) const

 //

 // Create a new client session for this server.

 //

 	{

 	TVersion v(KF32MajorVersionNumber,KF32MinorVersionNumber,KF32BuildVersionNumber);

 	TBool r=User::QueryVersionSupported(v,aVersion);

 	if (!r)

 		User::Leave(KErrNotSupported);

 	__CALL(if(UserHeapAllocFailCount>=0){__UHEAP_FAILNEXT(10);}); // Create session must succeed

 	CSessionFs* ses=CSessionFs::NewL();

 	CleanupStack::PushL(ses);

 	TUid aUid = aMessage.SecureId();

 	TBuf<30> thePath = KPrivatePath();	

 	thePath[0] = (TUint8) RFs::GetSystemDriveChar();

 	thePath.AppendNumFixedWidth(aUid.iUid, EHex, 8);

 	thePath.Append(KSlash);

 	HBufC* pP=thePath.AllocL(); 

 	ses->SetPath(pP);

 	__CALL(if (UserHeapAllocFailCount>=0){__UHEAP_FAILNEXT(UserHeapAllocFailCount);});

 	RThread idClient;

 	User::LeaveIfError(aMessage.Client(idClient, EOwnerThread));

 	ses->SetThreadId(idClient.Id());

 	idClient.Close();

 	CleanupStack::Pop(); //ses

 	return(ses);

 	}

 void CSessionFs::ServiceL(const RMessage2& aMessage)

 //

 // Service this message for the server

 //

 	{

 	__CALL( if (SimulateError(&aMessage)) { aMessage.Complete(ErrorCondition); return; } );

 	const TInt ipcFunction = aMessage.Function() & KIpcFunctionMask;

 	if((ipcFunction) >= EMaxClientOperations)

 		{

 		__THRD_PRINT1(_L("CSessionFs::DoServiceL() - func 0x%x KErrNotSupported"), ipcFunction);

 		aMessage.Complete(KErrNotSupported);

 		return;

 		}

 	const TOperation& oP = OperationArray[ipcFunction];

 	CFsClientMessageRequest* pR = NULL;

 	TInt r = RequestAllocator::GetMessageRequest(oP, aMessage, pR);

 	if(r != KErrNone)

 		{

 		if(r == KErrBadHandle)

 			{

 			_LIT(KPanic,"Panic");

 			aMessage.Panic(KPanic, r);

 			return;

 			}

 		aMessage.Complete(r);

 		return;

 		}

 	pR->Set(aMessage, oP, this);

 	__PRINT4TEMP(_L("***** Received Message sess %08x req %08x func 0x%x - %S"), this, pR, ipcFunction, GetFunctionName(ipcFunction));

 	pR->Dispatch();

 	}

 void CActiveSchedulerFs::New()

 //

 // Create and install the active scheduler.

 //

 	{

 	CActiveSchedulerFs* pA=new CActiveSchedulerFs;

 	__ASSERT_ALWAYS(pA!=NULL,Fault(EMainCreateScheduler));

 	CActiveScheduler::Install(pA);

 	}

 void CActiveSchedulerFs::Error(TInt anError) const

 //

 // Called if any Run() method leaves, which should never happen.

 //

 	{

 	__PRINT1(_L("FileSystemActiveScheduler Error %d"),anError);

 	User::Panic(_L("FSRV-ERR"),anError);

 	}

 void createAllL()

 //

 // Create the initial objects

 //

 	{

 //

 // First we need to create all the containers.

 //

 	TheContainer=CFsObjectConIx::NewL();

 	FileSystems=TheContainer->CreateL();

 	Extensions=TheContainer->CreateL();

 	ProxyDrives=TheContainer->CreateL();

 	Files=TheContainer->CreateL();

 	FileShares=TheContainer->CreateL();

 	Dirs=TheContainer->CreateL();

 	Formats=TheContainer->CreateL();

 	RawDisks=TheContainer->CreateL();

 	TClosedFileUtils::InitL();

 //

 // Initialize the drives

 //

 	for (TInt i=0;i<KMaxDrives;i++)

 		TheDrives[i].CreateL(i);

 //

 // Next we need to create the ROM file system.

 //

 #if defined(__EPOC32__)

 	InstallRomFileSystemL();

 	CFileSystem* romFs=GetFileSystem(_L("Rom"));

 //#ifndef __DATA_CAGING__	

 	TheDefaultPath=_L("Z:\\"); // Temporarily set the default path to the ROM

 //#endif

 	TheDrives[EDriveZ].SetAtt(KDriveAttRom|KDriveAttInternal);

 	TheDrives[EDriveZ].GetFSys()=romFs;

 	TInt r=FsThreadManager::InitDrive(EDriveZ,ETrue);

 	User::LeaveIfError(r);

 #endif

 	}

 TInt InitializeLocalFileSystem(const TDesC& aName)

 //

 // Initialize the local file system

 //

 	{

     __PRINT(_L("InitializeLocalFileSystem"));

     CFileSystem* localFileSystem=GetFileSystem(aName);

 	__ASSERT_DEBUG(localFileSystem!=NULL,Fault(EMainGetLocalFileSystem));

 	if(localFileSystem == NULL)

 		return KErrNotFound;

 #if defined(__WINS__)

 	TheDrives[EDriveZ].GetFSys()=localFileSystem;

 	TheDrives[EDriveZ].SetAtt(KDriveAttRom|KDriveAttInternal);

 	TInt r=FsThreadManager::InitDrive(EDriveZ,ETrue);

 	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainInitialiseRomFs));

 #endif

 //

 // Initialize the default path

 //

 //#ifndef __DATA_CAGING__

 #if !defined(__WINS__)

 	TInt r;

 #endif

 	r=localFileSystem->DefaultPath(TheDefaultPath);

 	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainGetLocalDefaultPath));

 //#endif

 	LocalFileSystemInitialized=ETrue;

 	return KErrNone;

 	}

 _LIT(KMediaLddName, "ELOCD");

 TInt StartupThread(TAny*)

 //

 // The startup thread.

 //

 	{

     __PRINT(_L("StartupThread"));

 	User::SetCritical(User::ESystemCritical);

 	TInt r;

 #ifdef SYMBIAN_FTRACE_ENABLE

 	r = User::LoadLogicalDevice(_L("D_FTRACE"));	

 	__PRINT1(_L("User::LoadLogicalDevice(D_FTRACE) returns %d"),r);

 	__ASSERT_ALWAYS(r==KErrNone || r==KErrAlreadyExists,Fault(ETraceLddLoadFailure));

 	r = TheFtrace.Open(EOwnerProcess);

 	__ASSERT_ALWAYS(r==KErrNone || r==KErrAlreadyExists,Fault(ETraceLddLoadFailure));

 #endif

 #if defined (__ENABLE_TRACE__)

 		{

 		RBTrace trace;

 		trace.Open();

 //		trace.SetMode(RBTrace::EEnable + RBTrace::EFreeRunning);

 		trace.SetFilter(BTrace::EThreadIdentification,1);

 		trace.SetFilter(UTF::EBorder,1);

 		trace.SetFilter(UTF::EError,1);

 		trace.SetFilter2(EF32TraceUidEfsrv,1);

 //		trace.SetFilter2(EF32TraceUidFileSys,1);

 //		trace.SetFilter2(EF32TraceUidProxyDrive,1);

 		trace.Close();	

 		}

 #endif

 //

 // Load the file system's device driver

 //

 	r=User::LoadLogicalDevice(KMediaLddName);

 	__PRINT1(_L("User::LoadLogicalDevice(KMediaLddName) returns %d"),r);

 	__ASSERT_ALWAYS(r==KErrNone || r==KErrAlreadyExists || r==KErrNotFound,Fault(EMainCreateResources6));

 	#ifdef __WINS__

 		// Load media drivers using Win32 functions.  It is not possible to directly

 		// read the \epoc32\release\wins\udeb directory, and ELOCAL must be mounted

 		// to access Win32 anyway.

 		_LIT(KMDW1, "MED*.PDD");

 		TBuf<9> KMDW(KMDW1);					// reserve space for \0

 		TFileName *pfn = new TFileName;

 		__ASSERT_ALWAYS(pfn != NULL, Fault(EMainScanMediaDriversMem1));

 		TFileName &fn = *pfn;

 		MapEmulatedFileName(fn, KMDW);

 		__ASSERT_ALWAYS(fn.Length() < KMaxFileName, Fault(EMainScanMediaDriversLocation));

 		WIN32_FIND_DATA ffd;

 		HANDLE h = Emulator::FindFirstFile((LPCTSTR)fn.PtrZ(), &ffd); //SL: added cast

 		BOOL fF = (h != INVALID_HANDLE_VALUE);

 		while (fF)

 			{

 			TPtrC mdNm((const TUint16 *)ffd.cFileName);			// null terminated wchar_t array SL: added cast

 			// NB: parse Win32 file path with EPOC32 functionality.

 			TParse *pprs = new TParse;

 			__ASSERT_ALWAYS(pprs != NULL, Fault(EMainScanMediaDriversMem2));

 			TParse &prs = *pprs;

 			prs.Set(mdNm, NULL, NULL);

 			r = User::LoadPhysicalDevice(prs.NameAndExt());

 			__ASSERT_ALWAYS(r==KErrNone || r==KErrAlreadyExists || r==KErrNotFound,Fault(EMainLoadMediaDriver));

 			fF = Emulator::FindNextFile(h, &ffd);

 			delete pprs;

 			}

 		FindClose(h);							// Win32 direct

 		delete pfn;

 	#else

 		// Load media drivers for EPOC32 using built-in rom file system.

 		{

 		RFs fsM;

 		r = fsM.Connect();

 		__ASSERT_ALWAYS(r==KErrNone,Fault(EMainScanMediaDriverConnect));

 //#ifdef __EPOC32__

 		_LIT(KMDSysBinHome, "Z:\\Sys\\Bin\\med*.pdd");

 //#else

 //		_LIT(KMDHome, "med*.pdd");

 //#endif

 		RDir d;

 		r = d.Open(fsM, KMDSysBinHome, KEntryAttMaskSupported);

 		__ASSERT_ALWAYS(r==KErrNone,Fault(EMainScanMediaDriverDirOpen));

 		TBool done = EFalse;

 		do

 			{

 			TEntryArray ea;

 			r = d.Read(ea);

 			__ASSERT_ALWAYS(r == KErrNone || r == KErrEof, Fault(EMainScanMediaDriverDirRead));

 			done = (r == KErrEof);

 			for (TInt i = 0; i < ea.Count(); ++i)

 				{

 				const TEntry &e = ea[i];

 				if (!e.IsDir())

 					{

 					TParse *pprs = new TParse;

 					__ASSERT_ALWAYS(pprs != NULL, Fault(EMainScanMediaDriversMem1));

 					TParse &prs = *pprs;

 					prs.Set(e.iName, NULL, NULL);

 					TPtrC mdName(prs.NameAndExt());

 					r = User::LoadPhysicalDevice(mdName);

 					__PRINT1(_L("User::LoadPhysicalDevice(mdName) returns %d"),r);

 					__ASSERT_ALWAYS(r==KErrNone || r==KErrAlreadyExists || r==KErrNotFound,Fault(EMainLoadMediaDriver));

 					delete pprs;

 					}

 				}

 			} while (! done);

 		d.Close();

 		fsM.Close();

 		}

 	#endif		// else __WINS__

 #if defined(__WINS__)

 //#ifndef __DATA_CAGING__	

 		TheDefaultPath=_L("?:\\");

 		TheDefaultPath[0] = (TUint8) RFs::GetSystemDriveChar();

 //#endif

 #endif

 #if defined(__EPOC32__)

 	TMachineStartupType reason;

 	UserHal::StartupReason(reason);

 #if defined(_DEBUG) || defined(_DEBUG_RELEASE)

 	PrintStartUpReason(reason);

 #endif

 	OpenOnDriveZOnly = (reason==EStartupSafeReset);

 #endif

 //

 // Now we must load estart from z:

 //

 	RProcess eStart;

 #if defined(__WINS__)

 	const char* eStartPath = NULL;

 	UserSvr::HalFunction(EHalGroupEmulator,EEmulatorHalStringProperty,(TAny*)"EStart",&eStartPath);

 	if (eStartPath == NULL)

 		{

 		r=eStart.Create(KStartupExeSysBinName,KNullDesC);

 		}

 	else

 		{

 		TPtrC8 temp((unsigned char *)eStartPath);

 		TBuf16<KMaxFileName> buf;

 		buf.Copy(temp);

 		r=eStart.Create(buf,KNullDesC);

 		}

 #else

 	r=eStart.Create(KStartupExeSysBinName,KNullDesC);

 #endif

 	if (r!=KErrNone)	// Whoops!

 		Fault(EMainStartupNoEStart);

 	eStart.Resume();	// Start the process going

 	eStart.Close();		// Get rid of our handle

 #if defined(_LOCKABLE_MEDIA)

 	// Create a global semaphore for the asynchronous WriteToDisk() threads.

 	RSemaphore s;

 	r = s.CreateGlobal(_L("dwsem"), 1);			// only supp 1 thd at a time

 	__ASSERT_ALWAYS(r == KErrNone, Fault(EMainStartupWriteToDiskSemaphore));

 #endif

 //

 // Now we can just exit the startup thread as its no longer needed.

 //

 	return(KErrNone);

 	}

 void commonInitialize()

 //

 // Initialization common to all platforms.

 //

 	{

 	__PRINT(_L("commonInitialize"));

 #if defined(_DEBUG) || defined(_DEBUG_RELEASE)

 	ErrorCondition=KErrNone;

 	ErrorCount=0;

 	UserHeapAllocFailCount=-1;

 	KernHeapAllocFailCount=-1;

 #endif

 	TInt r= RequestAllocator::iCacheLock.CreateLocal();

 	__ASSERT_ALWAYS(r==KErrNone,Fault(EFsCacheLockFailure));

 	// initialise the TParse pool lock object

 	r = TParsePool::Init();

 	__ASSERT_ALWAYS(r==KErrNone,Fault(EFsParsePoolLockFailure));

 	// Get local copies of capability sets

 	TCapabilitySet caps;

 	caps.SetAllSupported();

 	AllCapabilities=*(SCapabilitySet*)∩︀

 	caps.SetDisabled();

 	DisabledCapabilities=*(SCapabilitySet*)∩︀

 	FsThreadManager::SetMainThreadId();

 	r=FsThreadManager::CreateDisconnectThread();

 	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainDisconnectThread));

 	RequestAllocator::Initialise();

 	//

 	// Install a trap handler

 	//

 	CTrapCleanup* trapHandler=CTrapCleanup::New();

 	__ASSERT_ALWAYS(trapHandler!=NULL,Fault(EMainCreateResources1));

 	TRAP(r,createAllL())

 	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainCreateResources1));

 	CActiveSchedulerFs::New();

 	CServerFs::New();

 	TheKernEventNotifier = CKernEventNotifier::New();

     __ASSERT_ALWAYS(TheKernEventNotifier,Fault(EMainCreateResources5));

     CActiveSchedulerFs::Add(TheKernEventNotifier);

     TheKernEventNotifier->Start();

 //

 	__ASSERT_ALWAYS(InitLoader()==KErrNone,Fault(ELdrRestartInit));

 //

 	LocalFileSystemInitialized=EFalse;

 	StartupInitCompleted=EFalse;

 	RefreshZDriveCache=EFalse;

 	CompFsMounted=EFalse;

 	CompFsSync=ETrue;

 	// initialise notification information

 	FsNotify::Initialise();

 	// initialise local drive specific information

 	LocalDrives::Initialise();

 	TRAP(r, FsPluginManager::InitialiseL());

 	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainCreateStartupThread0));

 	RThread t;

 	r=t.Create(_L("StartupThread"),StartupThread,KDefaultStackSize,KHeapMinSize,KHeapMinSize,NULL);

 	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainCreateStartupThread1));

 	t.SetPriority(EPriorityLess);

 	CLogon* pL=NULL;

 	TRAP(r,pL=CLogon::NewL());

 	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainCreateStartupThread2));

 	// NOTE: This function only returns after the startup thread has exited

 	r=pL->Logon(t);

 	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainCreateStartupThread3));

 	delete pL;

 	// Make a proper process relative handle to the server

 	r=TheServerThread.Duplicate(TheServerThread);

 	__ASSERT_ALWAYS(r==KErrNone,Fault(EMainCreateStartupThread4));

 	ServerThreadAllocator = &User::Heap();

 	}

 TBool ServerIsRunning()

 //

 // Check whether or not the server already exists

 //

 	{

 	TFullName serverName;

 	TFindServer fileServer(KFileServerName);

 	TInt result=fileServer.Next(serverName);

 	if (result!=KErrNotFound)

 		return(ETrue);

 	return(EFalse);

 	}

 TInt E32Main()

 //

 // The file server.

 //

 	{

 	if (ServerIsRunning())

 		return(KErrNone);

 #if defined(_DEBUG) || defined(_DEBUG_RELEASE)

 	if (UserSvr::DebugMask() & 0x402)	// KBOOT | KDLL

 		//DebugReg=KFLDR;

 		//DebugReg=KFSERV|KFLDR;

 		DebugReg=KFSERV|KFLDR|KLFFS|KTHRD|KROFS;

 //	DebugReg=KFSYS|KFSERV|KFLDR|KLFFS|KTHRD|KCACHE|KROFS|KCOMPFS|KCACHE;

 //	User::SetDebugMask(0x80004000);

 #endif

 	__PRINT(_L("FileServer E32Main"));

 	UserSvr::FsRegisterThread();

 	RThread().SetPriority(EPriorityMore);

 	commonInitialize();

 	CActiveSchedulerFs::Start();

 	return(KErrNone);

 	}