sl@0: // Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: 
sl@0: #include <e32std.h>
sl@0: #include <f32fsys.h>
sl@0: #include <f32ver.h>
sl@0: #include <e32rom.h>
sl@0: #include <rofs.h>
sl@0: #include <f32dbg.h>
sl@0: 
sl@0: IMPORT_C TUint32 DebugRegister();
sl@0: #if defined(_DEBUG) || defined(_DEBUG_RELEASE)
sl@0: #define __LOCK_SR_STD__
sl@0: #define __PRINT(t)			{if (DebugRegister()&KROFS) RDebug::Print(t);}
sl@0: #define __PRINT1(t,d)		{if (DebugRegister()&KROFS) RDebug::Print(t,d);}
sl@0: #define __PRINT2(t,d,d1)	{if (DebugRegister()&KROFS) RDebug::Print( t, d , d1);}
sl@0: #else
sl@0: #define __PRINT(t)
sl@0: #define __PRINT1(t,d)
sl@0: #define __PRINT2(t,d,d1)
sl@0: #endif
sl@0: 
sl@0: //
sl@0: 
sl@0: #define _USE_TRUE_LRU_CACHE
sl@0: 
sl@0: const TUint KFileHidden = 0xFFFFFFFF;
sl@0: 
sl@0: class CRofs : public CFileSystem
sl@0: 	{
sl@0: public:
sl@0: 	enum TPanic
sl@0: 		{
sl@0: 		EPanicEntryNotDir,
sl@0: 		EPanicNullSubDir,
sl@0: 		EPanicNullFileBlock,
sl@0: 		EPanicNullFileBlock2,
sl@0: 		EPanicEntryBeforeDirectory,
sl@0: 		EPanicEntryAfterDirectory,
sl@0: 		EPanicBadMatchName,
sl@0: 		EPanicRemountNotSupported,
sl@0: 		EPanicGetFileInfo,
sl@0: 		EPanicFileTooBig,
sl@0: 		EPanicReadUid,
sl@0: 		EPanicDirCacheNull,
sl@0: 		EPanicDriveInfo
sl@0: 		};
sl@0: 	static void Panic( TPanic aPanic );
sl@0: 
sl@0: public:
sl@0: 	CRofs();
sl@0: 	~CRofs();
sl@0: 	
sl@0: 	static CRofs* New();
sl@0: 
sl@0: 	TInt Install();
sl@0: 	CMountCB* NewMountL() const;
sl@0: 	CFileCB* NewFileL() const;
sl@0: 	CDirCB* NewDirL() const;
sl@0: 	CFormatCB* NewFormatL() const;
sl@0: 
sl@0: 	void DriveInfo(TDriveInfo& anInfo,TInt aDriveNumber) const;
sl@0: 	TInt DefaultPath(TDes& aPath) const;
sl@0: 	TInt TotalSupportedDrives() const;
sl@0: 	TBool IsExtensionSupported() const{	return(ETrue);};
sl@0: private:
sl@0: 	TInt	iTotalSupportedDrives;
sl@0: 	};
sl@0: 
sl@0: 
sl@0: class CRofsMountCB;
sl@0: class CDirectoryCache : public CBase
sl@0: 	{
sl@0: 	public:
sl@0: 		CDirectoryCache( CRofsMountCB& aMount, CProxyDrive& aLocalDrive, const TRofsHeader& aHeader );
sl@0: 		~CDirectoryCache();
sl@0: 	
sl@0: 		void ConstructL();
sl@0: 
sl@0: 		void FindLeafDirL(const TDesC& aName, const TRofsDir*& aDir) const;
sl@0: 		void FindFileEntryL(const TDesC& aName, const TRofsEntry*& aEntry) const;
sl@0: 		void FindDirectoryEntryL(const TDesC& aName, const TRofsDir*& aDir) const;
sl@0: 		void GetNextMatchingL(const TDesC& aName, TUint aAtt, const TRofsDir*& aDir, const TRofsEntry*& aEntry, TInt aError, TBool bUseBinarySearch) const;
sl@0: 		void FindGeneralEntryL(const TDesC& aName, TUint aAtt, const TRofsDir*& aDir, const TRofsEntry*& aEntry ) const;
sl@0: 
sl@0: 		static inline const TText* NameAddress( const TRofsEntry* aEntry );
sl@0: 		TUint8 GetMountId(void);
sl@0: 
sl@0: 	private:
sl@0: 		CDirectoryCache();
sl@0: 		static inline TUint32 AlignUp( TUint32 aValue );
sl@0: 		inline const TRofsDir* RootDirectory() const;
sl@0: 		inline const TRofsDir* RofsDirFromMediaOffset( TUint aMediaOffset ) const;
sl@0: 		inline const TRofsDir* RofsDirFromSubDirEntry( const TRofsEntry* aEntry ) const;
sl@0: 		static inline const TRofsEntry* FirstSubDirEntryFromDir( const TRofsDir* aDir );
sl@0: 		inline const TRofsEntry* FirstFileEntryFromDir( const TRofsDir* aDir ) const;
sl@0: 		inline const TAny* EndOfFileBlockPlusOne( const TRofsDir* aDir ) const;
sl@0: 		inline const TAny* EndOfDirPlusOne( const TRofsDir* aDir ) const;
sl@0: 		static inline const TRofsEntry* NextEntry( const TRofsEntry* aEntry );
sl@0: 
sl@0: 		TInt DoFindSubDir(const TDesC& aName, TUint aAtt, const TRofsDir* aDir, const TRofsEntry*& aEntry) const;
sl@0: 		TInt DoFindFile(const TDesC& aName, TUint aAtt, const TRofsDir* aDir, const TRofsEntry*& aEntry) const;
sl@0: 
sl@0: 		TInt DoBinaryFindSubDir(const TDesC& aName, TUint aAtt, const TRofsDir* aDir, const TRofsEntry*& aEntry) const;
sl@0: 		TInt DoBinaryFindFile(const TDesC& aName, TUint aAtt, const TRofsDir* aDir, const TRofsEntry*& aEntry) const;
sl@0: 
sl@0: 		TInt GetDirCount(const TRofsDir* aDir) const;
sl@0: 		TInt GetFileCount(const TRofsDir* aDir) const;
sl@0: 		TInt Compare(const TDesC& aLeft, const TDesC& aRight) const;
sl@0: 		TInt ExtractMangleInfo(const TDesC& searchName, TUint8 &MountId, TUint8 &Reserved) const;
sl@0: 	private:
sl@0: 		CRofsMountCB&	iMount;
sl@0: 		CProxyDrive&	iLocalDrive;
sl@0: 		const TUint		iTreeMediaOffset;
sl@0: 		const TUint		iTreeSize;
sl@0: 		const TUint		iFilesMediaOffset;
sl@0: 		const TUint		iFilesSize;
sl@0: 		HBufC8*	iTreeBuffer;
sl@0: 		HBufC8*	iFilesBuffer;
sl@0: 	};
sl@0: 
sl@0: class CRofsFileCB;
sl@0: /**
sl@0: 
sl@0: */
sl@0: class CRofsLruCache;
sl@0: class CRofsMountCB : public CLocDrvMountCB, public CMountCB::MFileAccessor
sl@0: 	{
sl@0: public:
sl@0: 	CRofsMountCB();
sl@0: 	void MountL(TBool aForceMount);
sl@0: 	TInt ReMount();
sl@0: 	void Dismounted();
sl@0: 	void VolumeL(TVolumeInfo& aVolume) const;
sl@0: 	void SetVolumeL(TDes& aName);
sl@0: 	void MkDirL(const TDesC& aName);
sl@0: 	void RmDirL(const TDesC& aName);
sl@0: 	void DeleteL(const TDesC& aName);
sl@0: 	void RenameL(const TDesC& anOldName,const TDesC& anNewName);
sl@0: 	void ReplaceL(const TDesC& anOldName,const TDesC& anNewName);
sl@0: 	void EntryL(const TDesC& aName,TEntry& anEntry) const;
sl@0: 	void SetEntryL(const TDesC& aName,const TTime& aTime,TUint aMask,TUint aVal);
sl@0: 	void FileOpenL(const TDesC& aName,TUint aMode,TFileOpen anOpen,CFileCB* aFile);
sl@0: 	void DirOpenL(const TDesC& aName,CDirCB* aDir);
sl@0: 	void RawReadL(TInt64 aPos,TInt aLength,const TAny* aTrg,TInt anOffset,const RMessagePtr2& aMessage) const;
sl@0: 	void RawWriteL(TInt64 aPos,TInt aLength,const TAny* aSrc,TInt anOffset,const RMessagePtr2& aMessage);
sl@0: 	void GetShortNameL(const TDesC& aLongName,TDes& aShortName);
sl@0: 	void GetLongNameL(const TDesC& aShortName,TDes& aLongName);
sl@0: 	void ReadSectionL(const TDesC& aName,TInt aPos,TAny* aTrg,TInt aLength,const RMessagePtr2& aMessage);
sl@0: 	void ReadUidL( TUint aMediaOffset, TEntry& aEntry, TRofsEntry* aRofsEntry) const;
sl@0: 	inline CRofs& FileSystem() const;
sl@0: 	virtual TInt GetInterface(TInt aInterfaceId,TAny*& aInterface,TAny* aInput);
sl@0: 	virtual TInt GetFileUniqueId(const TDesC& aName, TInt64& aUniqueId);
sl@0: 	virtual TInt Spare3(TInt aVal, TAny* aPtr1, TAny* aPtr2);
sl@0: 	virtual TInt Spare2(TInt aVal, TAny* aPtr1, TAny* aPtr2);
sl@0: 	virtual TInt Spare1(TInt aVal, TAny* aPtr1, TAny* aPtr2);
sl@0: 
sl@0: #ifdef _USE_TRUE_LRU_CACHE
sl@0: 	void CacheReadL(TInt aPos, TInt aLength, const TAny* aDes, TInt anOffset, const RMessagePtr2& aMessage) const;
sl@0: #endif
sl@0: 	TUint8 iMountId;
sl@0: 
sl@0: private:
sl@0: 	TInt CheckHeader() const;
sl@0: 	TInt CheckExtension();
sl@0: 
sl@0: private:
sl@0: 	TPckgBuf<TRofsHeader>	iHeader;
sl@0: 	CDirectoryCache*	iDirectoryCache;
sl@0: 	TInt64				iMediaSize;
sl@0: 
sl@0: #ifdef _USE_TRUE_LRU_CACHE
sl@0:  	CRofsLruCache*		iDataCache;
sl@0: #endif
sl@0: 
sl@0: 	};
sl@0: 
sl@0: class CRofsFileCB : public CFileCB, public CFileCB::MBlockMapInterface, public CFileCB::MExtendedFileInterface
sl@0: 	{
sl@0: public:
sl@0: 	CRofsFileCB();
sl@0: 	void RenameL(const TDesC& aNewName);
sl@0: 	void ReadL(TInt aPos,TInt& aLength,const TAny* aDes,const RMessagePtr2& aMessage);
sl@0: 	void WriteL(TInt aPos,TInt& aLength,const TAny* aDes,const RMessagePtr2& aMessage);
sl@0: 	void SetSizeL(TInt aSize);
sl@0: 	void SetEntryL(const TTime& aTime,TUint aMask,TUint aVal);
sl@0: 	void FlushDataL();
sl@0: 	void FlushAllL();
sl@0: 	inline void SetMediaBase(const TUint aBase);
sl@0: 	inline void SetAttExtra( TUint8 aAttExtra );
sl@0: 	TInt GetInterface(TInt aInterfaceId,TAny*& aInterface,TAny* aInput);
sl@0: 
sl@0: 	// from CFileCB::MExtendedFileInterface
sl@0: 	virtual void ReadL(TInt64 aPos,TInt& aLength,TDes8* aDes,const RMessagePtr2& aMessage, TInt aOffset);
sl@0: 	virtual void WriteL(TInt64 aPos,TInt& aLength,const TDesC8* aDes,const RMessagePtr2& aMessage, TInt aOffset);
sl@0: 	virtual void SetSizeL(TInt64 aSize);
sl@0: 
sl@0: private:
sl@0: 	inline CRofsMountCB& RofsMount();
sl@0: 	TInt BlockMap(SBlockMapInfo& aInfo, TInt64& aStartPos, TInt64 aEndPos);
sl@0: 
sl@0: private:
sl@0: 	TUint iMediaBase;
sl@0: 	TUint8	iAttExtra;
sl@0: 	};
sl@0: 
sl@0: class CRofsDirCB : public CDirCB
sl@0: 	{
sl@0: public:
sl@0: 	CRofsDirCB();
sl@0: 	~CRofsDirCB();
sl@0: 	void ReadL(TEntry& anEntry);
sl@0: 	void SetDir(const TRofsDir* aDir, const TDesC& aMatch, TInt64& aTimeStamp );
sl@0: 	inline void SetCache( CDirectoryCache* aCache );
sl@0: private:
sl@0: 	TBool MatchUid();
sl@0: private:
sl@0: 	CDirectoryCache* iCache;
sl@0: 	TEntry iEntry;
sl@0: 	TTime	iTimeStamp;
sl@0: 	const TRofsDir* iDir;
sl@0: 	const TRofsEntry* iNext;
sl@0: 	HBufC* iMatch;
sl@0: 	};
sl@0: 
sl@0: #ifdef _USE_TRUE_LRU_CACHE
sl@0: const TInt KSizeOfCacheInPages = 5;	// 5K Cache
sl@0: const TInt KSizeOfSegment = 1024;	//Two pages
sl@0: const TInt KPageSize = 512;
sl@0: 
sl@0: class TCacheSegment
sl@0: 	{
sl@0: public:
sl@0: 	TCacheSegment();
sl@0: 	void Set(TInt aPos);
sl@0: 	TUint8* Data() {return(((TUint8*)this)+sizeof(TCacheSegment));}
sl@0: public:
sl@0: 	TInt iPos;	
sl@0: 	TDblQueLink iLink;
sl@0: 	};
sl@0: 
sl@0: //
sl@0: //Data cache for Rofs, (read only cache)
sl@0: //
sl@0: class CRofsLruCache: public CBase
sl@0: 	{
sl@0: public:
sl@0: 	~CRofsLruCache();
sl@0: 	static CRofsLruCache* New(TInt aSegmentSize, CRofsMountCB* aMount, TInt64 aMediaSize);
sl@0: 	TUint8* Find(TInt aPos , TInt aLength);
sl@0: 	TUint8* ReadL(TInt aPos , TInt aLength);
sl@0: protected:
sl@0: 	CRofsLruCache(CRofsMountCB* aMount, TInt64 aMediaSize);
sl@0: private:
sl@0: 	TDblQue<TCacheSegment> iQue;
sl@0: 	CRofsMountCB* iMount;
sl@0: 	TInt64 iMediaSize;
sl@0: 	};
sl@0: #endif
sl@0: 
sl@0: 
sl@0: #include "sr_rofs.inl"