userlibandfileserver/fileserver/sfile/sf_local.cpp
changeset 0 a41df078684a
child 36 bbf8bed59bcb
equal deleted inserted replaced
-1:000000000000 0:a41df078684a
       
     1 // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of the License "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 //
       
    15 
       
    16 #include "sf_std.h"
       
    17 #include "e32cmn.h"
       
    18 
       
    19 #ifdef SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION	
       
    20 #include "sf_notifier.h"
       
    21 #endif
       
    22 
       
    23 GLREF_C CProxyDriveFactory* GetExtension(const TDesC& aName);
       
    24 GLREF_C CExtProxyDriveFactory* GetProxyDriveFactory(const TDesC& aName);
       
    25 
       
    26 TBusLocalDrive LocalDrives::iLocalDrives[KMaxLocalDrives];			
       
    27 TInt LocalDrives::iMapping[KMaxDrives];
       
    28 TInt LocalDrives::iReverseMapping[KMaxLocalDrives];
       
    29 TBool LocalDrives::iMappingSet;
       
    30 LocalDrives::TSocketDesc LocalDrives::iSocketDescs[KMaxPBusSockets];
       
    31 CExtProxyDrive*  LocalDrives::iProxyDriveMapping[KMaxProxyDrives];
       
    32 TBool LocalDrives::iIsMultiSlotDrive[KMaxDrives];
       
    33 const TInt KInvalidSocketNumber = -1;
       
    34 
       
    35 void LocalDrives::Initialise()
       
    36 //
       
    37 //
       
    38 //
       
    39 	{	
       
    40 	iMappingSet = EFalse;
       
    41 	TInt i;
       
    42 	Mem::FillZ((TAny*)iProxyDriveMapping,sizeof(CExtProxyDriveFactory*)*KMaxProxyDrives);
       
    43 	// initialise mapping from drive number to local drive
       
    44 	for(i=0;i<KMaxDrives;i++)
       
    45 		{
       
    46 		iMapping[i] = KDriveInvalid;
       
    47 		iIsMultiSlotDrive[i] = EFalse;
       
    48 		}
       
    49 	// initialise reverse mapping from local drive to drive.
       
    50 	for(i=0;i<KMaxLocalDrives;i++)
       
    51 		{
       
    52 		iReverseMapping[i] = KDriveInvalid;
       
    53 		}
       
    54 	// initialise mapping from socket number to drive numbers
       
    55 	for(i=0;i<KMaxPBusSockets;++i)
       
    56 		{
       
    57 		TSocketDesc& socketDesc = iSocketDescs[i];
       
    58 		socketDesc.iMediaType = EInvalidMedia;
       
    59 		socketDesc.iControllerRelativeSocket = KInvalidSocketNumber;
       
    60 		for(TInt j=0;j<KMaxDrivesPerSocket;++j)
       
    61 			socketDesc.iDriveNumbers[j]=KDriveInvalid;
       
    62 		}
       
    63 	}
       
    64 
       
    65 // Searches for a local socket which matches the media type and 
       
    66 // controller relative socket number. 
       
    67 // If none is found then this function returns a new socket number.
       
    68 // If no more free sockets available, returns KErrNoMemory
       
    69 TInt LocalDrives::GetLocalSocket(TInt aControllerRelativeSocket, TMediaDevice aMediaType)
       
    70 	{
       
    71 	TInt i;
       
    72 	TSocketDesc* socketDesc = NULL;
       
    73 	for (i=0; i<KMaxPBusSockets; i++)
       
    74 		{
       
    75 		socketDesc = &iSocketDescs[i];
       
    76 		TMediaDevice mediaType = socketDesc->iMediaType;
       
    77 		if (mediaType == aMediaType && socketDesc->iControllerRelativeSocket == aControllerRelativeSocket)
       
    78 			return i;
       
    79 		if (mediaType == EInvalidMedia)	// socket unassigned ?
       
    80 			break;
       
    81 		}
       
    82 	if (i == KMaxPBusSockets)
       
    83 		return KErrNoMemory;
       
    84 	
       
    85 	// assign a new local socket for this controller relative socket number & media type
       
    86 	socketDesc->iMediaType = aMediaType;
       
    87 	socketDesc->iControllerRelativeSocket = aControllerRelativeSocket;
       
    88 
       
    89 	return i;
       
    90 	}
       
    91 
       
    92 TBusLocalDrive& LocalDrives::GetLocalDrive(TInt aDrive)
       
    93 //
       
    94 // Export localdrives
       
    95 //
       
    96 	{
       
    97 	__ASSERT_DEBUG(aDrive>=0 && aDrive<KMaxDrives,Fault(EGetLocalDrive1));
       
    98 	__ASSERT_DEBUG(iMapping[aDrive]!=KDriveInvalid &&  iMapping[aDrive]<KMaxLocalDrives,Fault(EGetLocalDrive2));
       
    99 	return(iLocalDrives[iMapping[aDrive]]);
       
   100 	}
       
   101 
       
   102 
       
   103 TInt LocalDrives::GetLocalDriveNumber(TBusLocalDrive* aLocDrv)
       
   104 //
       
   105 // Get the local drive number for the local drive object passed in
       
   106 //
       
   107 	{
       
   108 	for(TInt i=0;i<KMaxLocalDrives;++i)
       
   109 		if(&iLocalDrives[i]==aLocDrv)
       
   110 			return(i);
       
   111 	return(KDriveInvalid);
       
   112 	}
       
   113 
       
   114 
       
   115 
       
   116 CExtProxyDrive* LocalDrives::GetProxyDrive(TInt aDrive)
       
   117 	{
       
   118 	__ASSERT_DEBUG(aDrive>=0 && aDrive<KMaxDrives,Fault(EGetProxyDriveMapping1));
       
   119 	__ASSERT_DEBUG(iMapping[aDrive]!=KDriveInvalid &&  iMapping[aDrive]>=KMaxLocalDrives && iMapping[aDrive]<KMaxDrives,Fault(EGetProxyDriveMapping1));
       
   120 	return iProxyDriveMapping[iMapping[aDrive]-KMaxLocalDrives];
       
   121 	}
       
   122 
       
   123 
       
   124 LOCAL_C TBool DriveNumberIsInRange(TInt aDrive)
       
   125 	{
       
   126 	
       
   127 	return((aDrive>=0) && (aDrive<KMaxDrives));
       
   128 	}
       
   129 	
       
   130 	
       
   131 TBool LocalDrives::IsValidDriveMapping(TInt aDrive)
       
   132 //
       
   133 //  Is the drive number to local drive mapping valid?
       
   134 //
       
   135 	{
       
   136 	
       
   137 	__ASSERT_DEBUG(DriveNumberIsInRange(aDrive),Fault(EIsValidDriveMapping));
       
   138 	return(iMapping[aDrive]!=KDriveInvalid);
       
   139 	}
       
   140 
       
   141 
       
   142 TInt LocalDrives::DriveNumberToLocalDriveNumber(TInt aDrive)
       
   143 //
       
   144 // Get the mapping from drive number to local drive
       
   145 //
       
   146 	{
       
   147 	return(iMapping[aDrive]);
       
   148 	}
       
   149 
       
   150 
       
   151 TInt LocalDrives::SetDriveMappingL(CFsRequest* aRequest)
       
   152 //
       
   153 //
       
   154 //
       
   155 	{
       
   156 	
       
   157 	__PRINT(_L("LocalDrives::SetDriveMappingL()"));
       
   158 	if (iMappingSet)
       
   159 		return(KErrAccessDenied);
       
   160 		
       
   161 	TLocalDriveMappingInfoBuf mBuf;
       
   162 	mBuf.FillZ();
       
   163 	aRequest->ReadL(KMsgPtr0,mBuf);
       
   164 	TLocalDriveMappingInfo& ldmi=mBuf();
       
   165 	
       
   166 	if (ldmi.iOperation==TLocalDriveMappingInfo::ESwapIntMappingAndSet)
       
   167 		{
       
   168 		// Only the 1st two entries of the mapping table are valid - holding the drive numbers to be swapped 
       
   169 		TInt r=KErrNone;
       
   170 		if (DriveNumberIsInRange(ldmi.iDriveMapping[0]) && DriveNumberIsInRange(ldmi.iDriveMapping[1]))
       
   171 			r=SwapDriveMapping(ldmi.iDriveMapping[0],ldmi.iDriveMapping[1]);
       
   172 		iMappingSet=ETrue;
       
   173 		return(r);
       
   174 		}
       
   175 	
       
   176 	// That just leaves EWriteMappingsAndSet and EWriteMappingsNoSet
       
   177 	for (TInt i=0;i<KMaxLocalDrives;++i)
       
   178 		{
       
   179 		TInt driveLetter=ldmi.iDriveMapping[i];
       
   180 		if(driveLetter==KDriveInvalid)
       
   181 			continue;
       
   182 		if ( !DriveNumberIsInRange(driveLetter))
       
   183 			{
       
   184 			// invalid mapping list passed in, clear all mappings set up
       
   185 			for(TInt j=0;j<KMaxDrives;j++)
       
   186 				iMapping[j] = KDriveInvalid;
       
   187 			return(KErrArgument);
       
   188 			}
       
   189 		__PRINT2(_L("drive letter %d -> local drive %d"),driveLetter,i);
       
   190 		
       
   191 		// If this mapping (letter -> localdrive) is already set then
       
   192 		// this must be a multislot device. Save this mapping as an 
       
   193 		// alternative mapping (by storing it in iReverseMapping)
       
   194 		if(iMapping[driveLetter] != KDriveInvalid)
       
   195 			{
       
   196 			iIsMultiSlotDrive[driveLetter] = ETrue;
       
   197 			}
       
   198 		// first time we've seen this drive letter
       
   199 		iMapping[driveLetter]=i;
       
   200 		// following mapping is used when we want to swap back again. 
       
   201 		iReverseMapping[i]=driveLetter;
       
   202 		}
       
   203 
       
   204 	InitDriveMapping();
       
   205 	if (ldmi.iOperation==TLocalDriveMappingInfo::EWriteMappingsAndSet)
       
   206 		iMappingSet=ETrue;
       
   207 	return(KErrNone);
       
   208 	}
       
   209 
       
   210 // Changes here must be reflected in SwapDriveMapping() 	
       
   211 void LocalDrives::InitDriveMapping()
       
   212 	{
       
   213 	__PRINT(_L("InitDriveMapping()"));
       
   214 	TDriveInfoV1Buf driveInfo;
       
   215 	TInt r=UserHal::DriveInfo(driveInfo);
       
   216 	__ASSERT_ALWAYS(r==KErrNone,Fault(EInitDriveMappingDriveInfo));	
       
   217 
       
   218 	// initialise the local drives
       
   219 	TInt i;
       
   220 	for(i=0;i<KMaxLocalDrives;++i)
       
   221 		{
       
   222 		TInt driveNo = iReverseMapping[i];
       
   223 		if(driveNo!=KDriveInvalid)
       
   224 			{
       
   225 			r=iLocalDrives[i].Connect(i,TheDrives[driveNo].iChanged);
       
   226 			__ASSERT_ALWAYS(r==KErrNone,Fault(EInitConnectLocalDrive));
       
   227 			__PRINT2(_L("connect to locdrv %d using drive %d"),i,driveNo);
       
   228 			//If this is a multislot then we need to set the iChanged to True
       
   229 			//So that we are mapped to the correct drive when we're booted.
       
   230 			if(iIsMultiSlotDrive[driveNo])
       
   231 				{
       
   232 				TheDrives[driveNo].iChanged = ETrue;
       
   233 				}
       
   234 			if (driveInfo().iDriveName[i].Length()==0)
       
   235 				continue;
       
   236 			TheDriveNames[driveNo]=driveInfo().iDriveName[i].Alloc();
       
   237 			__ASSERT_ALWAYS(TheDriveNames[driveNo],Fault(EInitCreateDriveName));
       
   238 			}
       
   239 		}
       
   240 
       
   241 	TInt drivesPerSocket[KMaxPBusSockets];
       
   242 	Mem::FillZ(&drivesPerSocket,KMaxPBusSockets*sizeof(TInt));
       
   243 	TInt nSockets=driveInfo().iTotalSockets;
       
   244 	for(i=0;i<KMaxLocalDrives;++i)
       
   245 		{
       
   246 		TInt socket;
       
   247 		if(iLocalDrives[i].Handle()==0 || !iLocalDrives[i].IsRemovable(socket))
       
   248 			{
       
   249 			TInt driveNo = iReverseMapping[i];
       
   250 			// Non-removable drive so shouldn't be listed as a Multislot drive
       
   251 			// Drives such as composite drives may have been
       
   252 			// set to true as the drive letter had been encountered before.
       
   253 			// make sure those drives are set to false here.
       
   254 			iIsMultiSlotDrive[driveNo]=EFalse;
       
   255 			continue;
       
   256 			}
       
   257 		__ASSERT_ALWAYS(socket>=0 && socket<nSockets,Fault(EInitDriveMappingSocketNo));
       
   258 		TInt drv=GetDriveFromLocalDrive(i);
       
   259 		// get local socket number
       
   260 		TMediaDevice mediaDevice = iLocalDrives[i].MediaDevice();
       
   261 		TInt localSocket = LocalDrives::GetLocalSocket(socket, mediaDevice);
       
   262 		__ASSERT_ALWAYS(localSocket>=0 && localSocket<KMaxPBusSockets,Fault(EInitDriveMappingSocketNo));
       
   263 		__PRINT4(_L("InitDriveMapping(), i = %d, , mediaDevice = %d, socket = %d, localSocket = %d"), 
       
   264 			i, mediaDevice, socket, localSocket);
       
   265 		__PRINT2(_L("drv = %d (%C:)"), drv, 'A' + drv);
       
   266 
       
   267 		TSocketDesc& socketDesc = iSocketDescs[localSocket];
       
   268 		if(drv!=KDriveInvalid)
       
   269 			{
       
   270 			TInt& count = drivesPerSocket[localSocket];
       
   271 			// setup up socket to drive mapping
       
   272 			__ASSERT_ALWAYS(count < KMaxDrivesPerSocket,Fault(ETooManyDrivesPerSocket));
       
   273 			socketDesc.iDriveNumbers[count]=drv;
       
   274 			if(count==0)
       
   275 				{
       
   276 				// setup media change notifier if this is first local drive found on socket
       
   277 				CNotifyMediaChange* pN=new CNotifyMediaChange(&iLocalDrives[i],localSocket);
       
   278 				__ASSERT_ALWAYS(pN!=NULL,Fault(EInitCreateMediaChangeNotifier));
       
   279 				__PRINT2(_L("created CNotifyMediaChange media 0x%x using local drive %d"), localSocket,i);
       
   280 				socketDesc.iMediaChanges = pN;
       
   281 				CActiveSchedulerFs::Add(pN);
       
   282 				pN->RunL();
       
   283 				}
       
   284 			++count;
       
   285 			}
       
   286 		}
       
   287 	}
       
   288 
       
   289 TInt LocalDrives::InitProxyDrive(CFsRequest* aRequest)
       
   290 	{
       
   291 	__PRINT(_L("LocalDrives::InitProxyDrive"));
       
   292 	
       
   293 	TInt drive = aRequest->Message().Int0() ;
       
   294 	
       
   295 	if (drive < 0 || drive >= KMaxDrives) 
       
   296 		return KErrArgument;
       
   297 	
       
   298 	if (drive!=EDriveZ && iMapping[drive]!=KDriveInvalid) 
       
   299 		return KErrInUse; // Z is special case for composite
       
   300 	
       
   301 	TFullName extname;
       
   302 	aRequest->ReadL(KMsgPtr1,extname);
       
   303 
       
   304 	// leave info thing for now
       
   305 	CExtProxyDriveFactory* pF = GetProxyDriveFactory(extname);
       
   306 	if (!pF) 
       
   307 		return KErrArgument;	// that extension has not been added
       
   308 	FsThreadManager::LockDrive(drive);
       
   309 	// find a free mapping to place this drive into
       
   310 	TInt i;
       
   311 	for (i=0; i <KMaxProxyDrives; i++)
       
   312 		{
       
   313 		if (!iProxyDriveMapping[i]) 
       
   314 			break;
       
   315 		}
       
   316 	FsThreadManager::UnlockDrive(drive);
       
   317 	if (i==KMaxProxyDrives) 
       
   318 		return KErrInUse;   // there are no free proxy drives left
       
   319 
       
   320 	// Create the actual proxy drive...
       
   321 	CProxyDrive* pD = NULL;
       
   322 	TInt r = pF->CreateProxyDrive(pD, NULL);
       
   323 	__ASSERT_ALWAYS(r == KErrNone, User::Panic(_L("CreateProxyDrive Error"), r));
       
   324 	__ASSERT_ALWAYS(pD != NULL, User::Panic(_L("CreateProxyDrive returned NULL"), -999));
       
   325 
       
   326 	iMapping[drive] = i+KMaxLocalDrives;
       
   327 
       
   328 	aRequest->SetDrive(&TheDrives[drive]);
       
   329 	aRequest->SetScratchValue((TUint)pD);
       
   330 
       
   331 	return KErrNone;
       
   332 	}
       
   333 
       
   334 TInt LocalDrives::MountProxyDrive(CFsRequest* aRequest)
       
   335 	{
       
   336 	CExtProxyDrive* pProxyDrive = (CExtProxyDrive*)aRequest->ScratchValue();
       
   337 	__ASSERT_ALWAYS(pProxyDrive != NULL, User::Panic(_L("MountProxyDrive has NULL proxy extension class"), -999));
       
   338 
       
   339 	TInt driveNumber = aRequest->Drive()->DriveNumber();
       
   340 
       
   341 
       
   342 	TInt proxyDriveNo = iMapping[driveNumber] - KMaxLocalDrives;
       
   343 	FsThreadManager::LockDrive(driveNumber);
       
   344 	iProxyDriveMapping[proxyDriveNo] = pProxyDrive;
       
   345 	pProxyDrive->SetDriveNumber(driveNumber);
       
   346 	FsThreadManager::UnlockDrive(driveNumber);
       
   347 	//
       
   348 	// Pass initialisation information onto the extension to allow it to initialise
       
   349 	//
       
   350 	TInt err = pProxyDrive->SetInfo(aRequest->Message(), 
       
   351 									(TAny*)aRequest->Message().Ptr2(), 
       
   352 									(TAny*)aRequest->Message().Ptr3());
       
   353 	if (err != KErrNone) 
       
   354 		{
       
   355 		//
       
   356 		// If we fail to initialise the extension, then close the drive (destroying the thread)
       
   357 		// and remove the mapping so we can attempt to mount again in the future.
       
   358 		//
       
   359 		FsThreadManager::LockDrive(driveNumber);
       
   360 		FsThreadManager::CloseDrive(driveNumber);
       
   361 		ClearProxyDriveMapping(driveNumber);
       
   362 		FsThreadManager::UnlockDrive(driveNumber);
       
   363 		return err;
       
   364 		}
       
   365 
       
   366 	return(iMapping[driveNumber]);
       
   367  	}
       
   368 
       
   369 TBool LocalDrives::IsProxyDrive(TInt aDrive)
       
   370 	{
       
   371 	__ASSERT_ALWAYS(aDrive>=0 && aDrive<KMaxDrives,Fault(EIsProxyDrive));
       
   372 	return (iMapping[aDrive] >= KMaxLocalDrives);
       
   373 	}
       
   374 
       
   375 TBool LocalDrives::IsProxyDriveInUse(CExtProxyDriveFactory* aDevice)
       
   376 	{
       
   377 	for (TInt i=0; i < KMaxProxyDrives; i++)
       
   378 		if (iProxyDriveMapping[i] && (iProxyDriveMapping[i]->FactoryP() == aDevice))
       
   379 			return(ETrue);
       
   380 
       
   381 	return(EFalse);
       
   382 	}
       
   383 
       
   384 void LocalDrives::ClearProxyDriveMapping(TInt aDrive)
       
   385 	{
       
   386 	__ASSERT_ALWAYS(aDrive>=0 && aDrive<KMaxDrives,Fault(EClearProxyDriveMapping1));
       
   387 	__ASSERT_DEBUG(iMapping[aDrive]>= KMaxLocalDrives && iProxyDriveMapping[iMapping[aDrive]-KMaxLocalDrives],Fault(EClearProxyDriveMapping2));
       
   388 	TInt idx = iMapping[aDrive]-KMaxLocalDrives;
       
   389 	delete iProxyDriveMapping[idx];
       
   390 	iProxyDriveMapping[idx] = NULL;
       
   391 	iMapping[aDrive] = KDriveInvalid;
       
   392 	}
       
   393 
       
   394 TInt LocalDrives::SetupMediaChange(TInt aDrive)
       
   395 	{
       
   396 	CExtProxyDrive* pProxyDrive = LocalDrives::GetProxyDrive(aDrive);
       
   397 	__ASSERT_ALWAYS(pProxyDrive != NULL,User::Panic(_L("SetupMediaChange - pProxyDrive == NULL"), ESetupMediaChange));
       
   398 
       
   399 	return pProxyDrive->SetupMediaChange();
       
   400 	}
       
   401 
       
   402 void LocalDrives::NotifyChangeCancel(TInt aDrive)
       
   403 	{
       
   404 	CExtProxyDrive* pProxyDrive = LocalDrives::GetProxyDrive(aDrive);
       
   405 	__ASSERT_ALWAYS(pProxyDrive != NULL,User::Panic(_L("NotifyChangeCancel - pProxyDrive == NULL"), ECancelNotifyChange));
       
   406 
       
   407 	pProxyDrive->NotifyChangeCancel();
       
   408 	}
       
   409 
       
   410 TInt LocalDrives::SwapDriveMapping(TInt aFirstDrive,TInt aSecondDrive)
       
   411 	{
       
   412 	
       
   413 	__PRINT(_L("SwapDriveMapping()"));
       
   414 	TInt firstLocalDrv=iMapping[aFirstDrive];
       
   415 	TInt secondLocalDrv=iMapping[aSecondDrive];
       
   416 	
       
   417 	// First, check this swap doesn't affect removable drives
       
   418 	TInt socket;
       
   419 	if (iLocalDrives[firstLocalDrv].Handle()!=0 && iLocalDrives[firstLocalDrv].IsRemovable(socket))
       
   420 		return(KErrAccessDenied);
       
   421 	if (iLocalDrives[secondLocalDrv].Handle()!=0 && iLocalDrives[secondLocalDrv].IsRemovable(socket))
       
   422 		return(KErrAccessDenied);	
       
   423 		
       
   424 	// Now swap the mappings over
       
   425 	iMapping[aFirstDrive]=secondLocalDrv;	
       
   426 	iMapping[aSecondDrive]=firstLocalDrv;
       
   427 
       
   428 	iReverseMapping[firstLocalDrv]=aSecondDrive;
       
   429 	iReverseMapping[secondLocalDrv]=aFirstDrive;
       
   430 	
       
   431 	// Finally, swap the drive names over
       
   432 	HBufC* drvName=TheDriveNames[aSecondDrive];
       
   433 	TheDriveNames[aSecondDrive]=TheDriveNames[aFirstDrive];
       
   434 	TheDriveNames[aFirstDrive]=drvName;
       
   435 	return(KErrNone);
       
   436 	}
       
   437 	
       
   438 void LocalDrives::CompleteNotifications(TInt aSocket)
       
   439 //
       
   440 //
       
   441 //
       
   442 	{
       
   443 	__ASSERT_DEBUG(aSocket>=0 && aSocket<KMaxPBusSockets && iSocketDescs[aSocket].iDriveNumbers[0]!=KDriveInvalid,Fault(ECompleteNotifSocketNo));
       
   444 	TInt i=0;
       
   445 	
       
   446 	// In a data-paging environment, the local media subsytem will only update the TDrive::iChanged flag
       
   447 	// for drives which have a CNotifyMediaChange object, i.e. for drives which call TBusLocalDrive::NotifyChange().
       
   448 	// Since we only create ONE CNotifyMediaChange object for each socket (no matter how many partitions/local drives
       
   449 	// are associated with that socket), we need to propagate the TDrive::iChanged flag to all drives on the socket.
       
   450 	TBool changedFlag = TheDrives[iSocketDescs[aSocket].iDriveNumbers[0]].IsChanged();
       
   451 
       
   452 	while(i<KMaxDrivesPerSocket && iSocketDescs[aSocket].iDriveNumbers[i]!=KDriveInvalid)
       
   453 		{
       
   454 		TheDrives[iSocketDescs[aSocket].iDriveNumbers[i]].SetChanged(changedFlag);
       
   455 		CompleteDriveNotifications(iSocketDescs[aSocket].iDriveNumbers[i++]);
       
   456 		}
       
   457 	}
       
   458 
       
   459 void LocalDrives::CompleteDriveNotifications(TInt aDrive)
       
   460 //
       
   461 //
       
   462 //
       
   463 	{
       
   464 	// If the drive is hung, then don't complete any disk change 
       
   465 	// notifications until the request causing the hang completes
       
   466 	if(FsThreadManager::IsDriveHung(aDrive))
       
   467 		FsThreadManager::SetMediaChangePending(aDrive);
       
   468 	else
       
   469 		{
       
   470 		FsNotify::DiskChange(aDrive);
       
   471 		
       
   472 #ifdef SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION	
       
   473 		if(FsNotificationManager::IsInitialised())
       
   474 			{
       
   475 			__PRINT3(_L("LocalDrives::CompleteDriveNotifications() Initialised=%d, Count=%d, Drive=%d"),FsNotificationManager::IsInitialised(),FsNotificationManager::Count(), aDrive);
       
   476 			TBuf<2> driveDes;
       
   477 			driveDes.Append((TChar)aDrive+(TChar)'A');
       
   478 			driveDes.Append((TChar)':');
       
   479 			FsNotificationManager::HandleChange(NULL,driveDes,TFsNotification::EMediaChange);
       
   480 			}
       
   481 #endif //SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION		
       
   482 
       
   483 	 	//If this is a multislot device we should update mappings here.
       
   484 		TheDrives[aDrive].MultiSlotDriveCheck();
       
   485 		}
       
   486 	}
       
   487 
       
   488 TInt LocalDrives::GetDriveFromLocalDrive(TInt aLocDrv)
       
   489 //
       
   490 //
       
   491 //
       
   492 	{
       
   493 	return iReverseMapping[aLocDrv];
       
   494 	}
       
   495 
       
   496 
       
   497 CNotifyMediaChange::CNotifyMediaChange(RLocalDrive* aDrive,TInt aSocketNo)
       
   498 //
       
   499 // Constructor
       
   500 //
       
   501 	: CActive(EPriorityHigh), iDrive(aDrive), iSocket(aSocketNo)
       
   502 	{}
       
   503 
       
   504 void CNotifyMediaChange::RunL()
       
   505 //
       
   506 // Notification that a card has been mounted/removed
       
   507 //
       
   508 	{
       
   509 	LocalDrives::CompleteNotifications(iSocket);
       
   510 	iDrive->NotifyChange(&iStatus);
       
   511 	SetActive();
       
   512 	}
       
   513 
       
   514 
       
   515 CExtNotifyMediaChange::CExtNotifyMediaChange(CExtProxyDrive* aDrive)
       
   516 //
       
   517 // Constructor
       
   518 //
       
   519 	: CActive(EPriorityHigh), 
       
   520 	  iDrive(aDrive),
       
   521 	  iPtr((TUint8*)&TheDrives[aDrive->DriveNumber()].iChanged,sizeof(TBool))
       
   522 	{
       
   523 	}
       
   524 
       
   525 	
       
   526 CExtNotifyMediaChange* CExtNotifyMediaChange::NewL(CExtProxyDrive* aDrive)
       
   527 	{
       
   528 	CExtNotifyMediaChange* pSelf = new(ELeave) CExtNotifyMediaChange(aDrive);
       
   529 
       
   530 	CleanupStack::PushL(pSelf);
       
   531 	pSelf->ConstructL();
       
   532 	CleanupStack::Pop();
       
   533 
       
   534 	return pSelf;
       
   535 	}
       
   536 
       
   537 void CExtNotifyMediaChange::ConstructL()
       
   538 	{
       
   539 	CActiveSchedulerFs::Add(this);
       
   540 
       
   541 	TRAPD(err, RunL());
       
   542 	if(err != KErrNone)
       
   543 		Deque();
       
   544 
       
   545 	User::LeaveIfError(err);
       
   546 	}
       
   547 
       
   548 CExtNotifyMediaChange::~CExtNotifyMediaChange()
       
   549     {
       
   550     Cancel();
       
   551     }
       
   552 
       
   553 void CExtNotifyMediaChange::RequestL()
       
   554     {
       
   555     if (!IsActive())
       
   556         {
       
   557         User::LeaveIfError(iDrive->NotifyChange(iPtr, &iStatus));
       
   558         SetActive();
       
   559         }
       
   560     }
       
   561 
       
   562 void CExtNotifyMediaChange::DoCancel()
       
   563     {
       
   564     iDrive->NotifyChangeCancel();
       
   565     }
       
   566 
       
   567 void CExtNotifyMediaChange::RunL()
       
   568 	{
       
   569     if(iStatus==KErrDisconnected || iStatus==KErrCancel)
       
   570         return;
       
   571 
       
   572     TInt driveNum = iDrive->DriveNumber();
       
   573     LocalDrives::CompleteDriveNotifications(driveNum);
       
   574 
       
   575     /* NOTE: We need SetChanged here though the iChanged variable is set in the MSC, since the cache is not getting cleared
       
   576         (inside the CompleteDriveNotifications call) during the initial first notification */
       
   577     TheDrives[driveNum].SetChanged(ETrue);
       
   578 
       
   579     if(iStatus != KErrNotSupported)
       
   580         {
       
   581         RequestL();
       
   582         }
       
   583 	}
       
   584 
       
   585 
       
   586