1 /*

     2 * Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 * Base file system class for FileSystem component

    16 * @internalComponent

    17 * @released

    18 *

    19 */

    20 

    21 

    22 #ifndef FIlESYSTEMCLASS_H

    23 #define FIlESYSTEMCLASS_H

    24 

    25 #include "cluster.h"

    26 #include "fat16bootsector.h"

    27 #include "fat32bootsector.h"

    28 #include "filesysteminterface.h"

    29 

    30 #include<map>

    31 #include <fstream>

    32 

    33 

    34 

    35 //default root cluster number 

    36 const int KDefaultRootCluster=2;

    37 const int KDefaultSectorSizeinBytes=512;

    38 const int KDefaultRootDirEntrySize=32;

    39 

    40 

    41 

    42 typedef	TClustersPerEntryMap::iterator Iterator;

    43 /**

    44 Class representing base class  of all FAT type 

    45 

    46 @internalComponent

    47 @released

    48 */

    49 class CFileSystem

    50 {

    51 protected:

    52 	//Pointer to dynamically allocated array for containing the boot sector values of a FAT volume

    53 	unsigned char* iData;

    54 	//cluster size in bytes

    55 	unsigned long int iClusterSize;

    56 	//number of sectors occupied by a root directory

    57 	unsigned long iRootDirSectors;	

    58 	//total number of clusters in data segment

    59 	unsigned long int iTotalClusters;

    60 	unsigned int iBytesPerSector;

    61 

    62 public:

    63 	//constructor

    64 	CFileSystem();

    65 	// virtual destructor

    66 	virtual ~CFileSystem();

    67 	virtual void CreateBootSector(Long64 aPartitionSize,ConfigurableFatAttributes* aConfigurableFatAttributes)=0 ;

    68 	virtual void WriteBootSector(ofstream& aOutPutStream)=0 ;

    69 	virtual void CreateFatTable(ofstream& aOutPutStream)=0;

    70 	virtual void ComputeClusterSizeInBytes()=0;

    71 	virtual void ComputeRootDirSectors()=0;

    72 	virtual void ComputeTotalClusters(Long64 aPartitionSize)=0;

    73 	virtual void Execute(Long64 aPartitionSize,EntryList aNodeList,ofstream& aOutPutStream,

    74 						ConfigurableFatAttributes* aConfigurableFatAttributes)=0;

    75 	unsigned long int  GetTotalCluster() const;

    76 	unsigned long GetRootDirSectors() const;

    77 	unsigned long int GetClusterSize() const;

    78 	unsigned int GetBytesPerSector() const;

    79 };

    80 

    81 #endif //FIlESYSTEMCLASS_H