--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imgtools/imglib/filesystem/source/fat32bootsector.cpp	Mon May 10 19:54:49 2010 +0100
@@ -0,0 +1,284 @@
+/*
+* Copyright (c) 2006-2009 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: 
+* This class represents the boot sector of a FAT32 image. 
+* This class is derived from basebootsector class which is constitutes 
+* the common boot sector fields for FAT16 and FAT32 class. 
+* @internalComponent
+* @released
+*
+*/
+
+#include "fat32bootsector.h"
+#include <cstring>
+
+/**
+Constructor of the fat16 boot sector class
+
+@internalComponent
+@released
+*/
+TFAT32BootSector::TFAT32BootSector()
+{
+}
+
+/**
+Destructor of the fat16 boot sector class
+
+@internalComponent
+@released
+*/
+TFAT32BootSector::~TFAT32BootSector()
+{
+}
+/**
+Set the file system type
+
+@internalComponent
+@released
+*/
+void TFAT32BootSector::SetFileSysType()
+{
+	strcpy(reinterpret_cast<char*>(iFileSysType),"FAT32   ");
+}
+
+
+//Number of entries allowed in the root directory, specific to Fat12/16, zero for FAT32
+void TFAT32BootSector::SetRootDirEntries()
+{
+	iRootDirEntries = KFat32RootDirEntries;;		
+}
+
+
+//Sets the number of reserved sectors on the volume
+void TFAT32BootSector::SetReservedSectors()
+{
+	iReservedSectors = KDefaultFat32ReservedSectors;
+}
+
+/**
+Set the sectors per cluster ratio
+
+@internalComponent
+@released
+
+@param aPartitionSize partition size in bytes
+*/
+void TFAT32BootSector::ComputeSectorsPerCluster(Long64 aPartitionSize)
+{
+	if (aPartitionSize > K32GB)
+	{
+		iSectorsPerCluster = K64SectorsPerCluster;	
+	}
+	else if(aPartitionSize > K16GB)
+	{
+		iSectorsPerCluster = K32SectorsPerCluster;
+	}
+	else if(aPartitionSize > K8GB)
+	{
+		iSectorsPerCluster = K16SectorsPerCluster;
+	}
+	else if ( aPartitionSize > K260MB)
+	{
+		iSectorsPerCluster = K8SectorsPerCluster;	
+	}
+	else 
+	{
+		iSectorsPerCluster = K1SectorsPerCluster;
+	}
+}
+	
+/**
+Set the sectors per cluster ratio
+
+
+To refer this mathematical computation, Please see:
+Microsoft Extensible Firmware Initiative FAT32 File System 
+Specification document
+
+@internalComponent
+@released
+
+@param aPartitionSize partition size in bytes
+*/
+void TFAT32BootSector::ComputeFatSectors(Long64 aPartitionSize)
+{
+	int iRootDirSectors = ((iRootDirEntries*32) + (iBytesPerSector - 1)) / iBytesPerSector;
+	int Log2OfBytesPerSector = Log2(iBytesPerSector);
+	Long64 TotalSectors64 = aPartitionSize >> Log2OfBytesPerSector;
+	Long64 tmpval1 = TotalSectors64 - (iReservedSectors + iRootDirSectors);
+	Long64 tmpval2 =(256 * iSectorsPerCluster) + iNumberOfFats;
+	tmpval2 = tmpval2 / 2;
+	Long64 FatSectors = (tmpval1 + (tmpval2 - 1)) / tmpval2;
+	iFatSectors = 0;
+	iFatSectors32 = (unsigned int)FatSectors;
+}
+/**
+Sets the Fat flags
+
+@internalComponent
+@released
+*/
+void TFAT32BootSector::SetExtFlags()
+{
+	iExtFlags = KDefaultExtFlags;
+}
+
+/**
+Returns the Fat flags
+
+@internalComponent
+@released
+
+@return fat flags
+*/
+unsigned short TFAT32BootSector::ExtFlags()
+{
+	return iExtFlags;
+}
+
+/**
+Sets the version number of the file system
+
+@internalComponent
+@released
+*/
+void TFAT32BootSector::SetFileSystemVersion()
+{
+	iFileSystemVersion = KDefaultVersion;
+}
+
+/**
+Returns the version number of the file system
+
+@internalComponent
+@released
+
+@return file system version
+*/
+unsigned short TFAT32BootSector::FileSystemVersion()
+{
+	return iFileSystemVersion;
+}
+
+/**
+Sets the cluster number of the root directory
+
+@internalComponent
+@released
+*/
+void TFAT32BootSector::SetRootCluster()
+{
+	iRootCluster = KDefaultRootDirClusterNumber;
+}
+
+/**
+Returns the cluster number of the root directory
+
+@internalComponent
+@released
+
+@return cluster number allocated to root directory,usually 2.
+*/
+unsigned int TFAT32BootSector::RootCluster()
+{
+	return iRootCluster;
+}
+
+/**
+Set the sector number containing the FSIInfo structure
+
+@internalComponent
+@released
+*/
+void TFAT32BootSector::SetFSInfo()
+{
+	iFSInfo = KDefaultFSInfoSector;
+}
+
+/**
+Returns  the sector number containing the FSIInfo structure
+
+@internalComponent
+@released
+
+@return FSInfo structure
+*/
+unsigned short TFAT32BootSector::FSInfo()
+{
+	return iFSInfo;
+}
+
+/**
+Set the backup boot sector
+
+@internalComponent
+@released
+*/
+void TFAT32BootSector::SetBackUpBootSector()
+{
+	iBackUpBootSector = KDefaultBkUpBootSec;
+}
+
+/**
+Returns the backup boot sector
+
+@internalComponent
+@released
+
+@return backup boot sector
+*/
+unsigned  short TFAT32BootSector::BackUpBootSector()
+{
+	return iBackUpBootSector;
+}
+
+/**
+Reserved for future expansion. Code that formats FAT32 volumes should always 
+set all of the bytes of this field to 0.
+
+@internalComponent
+@released
+*/
+void TFAT32BootSector::SetFutureReserved()
+{
+	for(int i = 0;i < KMaxSizeFutureExpansion;i++)
+	iFutureReserved[i] = 0;
+}
+
+/**
+Returns field value reserved for future expansion
+
+@internalComponent
+@released
+
+@return zero as this field is initialized to null value here
+*/
+unsigned char* TFAT32BootSector::FutureReserved()
+{
+	return iFutureReserved;
+}
+
+
+/**Returns the file system type
+
+@internalComponent
+@released
+
+@return file system type
+*/
+unsigned char* TFAT32BootSector::FileSysType()
+{
+	return iFileSysType;
+}