imgtools/imglib/filesystem/source/fatbasebootsector.cpp
author jjkang
Fri, 25 Jun 2010 18:11:34 +0800
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child 590 360bd6b35136
permissions -rw-r--r--
add deprecated files
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/*
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* Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: 
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* This file contains the definition of class TFATBaseBootSector. 
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* TFATBaseBootSector is the base class for the boot sector class 
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* of different FAT file system type.This contains the data member 
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* representing the common fields in each FAT image type
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* @internalComponent
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* @released
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*
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*/
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#include "fatbasebootsector.h"
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/**
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Constructor of the base boot sector class
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@internalComponent
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@released
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*/
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TFATBaseBootSector::TFATBaseBootSector()
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{
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}
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/**
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Destructor of the base boot sector class
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@internalComponent
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@released
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*/
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TFATBaseBootSector::~TFATBaseBootSector()
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{
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}
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/**
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Function Sets the OEM name generally, Indication of what system 
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formats the volume
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@internalComponent
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@released
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*/
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void TFATBaseBootSector::SetOEMName()
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	{
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		strcpy( reinterpret_cast<char*>(iOEMName),KDefaultOEMName);
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	}
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/**
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Function to get the OEM name
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@internalComponent
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@released
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@return OEM Name
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*/
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unsigned char* TFATBaseBootSector::OEMName() 
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	{
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		return iOEMName;
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	}
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/**
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Function to set the jump instructions
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@internalComponent
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@released
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*/
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void TFATBaseBootSector::SetJumpInstruction()
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{
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	iJmpBoot[0]= 0xEB;
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	iJmpBoot[1]= 0x5A;
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	iJmpBoot[2]= 0x90;
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}
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/**
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Function to get the jump instructions
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@internalComponent
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@released
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@return jump boot instruction
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*/
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unsigned char* TFATBaseBootSector::JumpInstruction()  
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{
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	return iJmpBoot;
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}
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/**
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Function to set the bytes per sector.  
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@internalComponent
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@released
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@param aDriveSectorSize Sector size in bytes 
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*/
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void TFATBaseBootSector::SetBytesPerSector(unsigned int aDriveSectorSize)
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{
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	// Take the default value if SectorSize is not provided by the user. 
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	if (aDriveSectorSize != 0)
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	{
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		unsigned short int acceptableValues[] = {512,1024,2048,4096};
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		unsigned short int acceptableValuesCount = 4;
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		bool validSectorSize = false;
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		for (unsigned int count=0; count<acceptableValuesCount; count++)
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		{
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			if(aDriveSectorSize == acceptableValues[count])
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			{
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				validSectorSize = true;
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				break;
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			}
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		}
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		// If invalid value for Sector Size is provided, consider the default value.
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		if (validSectorSize)
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		{
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			iBytesPerSector=aDriveSectorSize;
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			return;
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		}
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		else
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		{
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			std::cout<<"Warning: Invalid Sector Size value. Default value is considered.\n";
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		}
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	}
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	iBytesPerSector=KDefaultBytesPerSector;	
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}
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/**
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Return the bytes per sector
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@internalComponent
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@released
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@return bytes per sector, hard coded as 512 here.
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*/
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unsigned int TFATBaseBootSector::BytesPerSector() const
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{
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	return iBytesPerSector;
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}
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/**
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Sets the number of Fats on the volume
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@internalComponent
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@released
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@param aDriveNoOfFATs Number of fats
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*/
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void TFATBaseBootSector::SetNumberOfFats(unsigned int aDriveNoOfFATs) 
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{
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	// Take the default value if No of FATs is not provided by the user. 
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	if (aDriveNoOfFATs != 0)
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	{
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		// If invalid value for No of FATs is provided, generate a warning and take the default value. 
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		if ((aDriveNoOfFATs>255) || (aDriveNoOfFATs<1))
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		{
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			std::cout<<"Warning: No of FATs should be between 0 and 256. Default value is considered.\n";
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			iNumberOfFats= KDefaultNumFats;
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			return;
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		}
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		iNumberOfFats= aDriveNoOfFATs;
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	}
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	else
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	{
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		iNumberOfFats= KDefaultNumFats;
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	}
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}
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/**
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Total sectors on the volume,This count includes the total count of all sectors 
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in all four regions of the volume.iTatalSectors is a 16 bit field and iTotalSectors32
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is a 32 bit field.Hence if the total sectors are more than 2^16(0x10000 in hex) 
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then iTotalSectors32 is set otherwise it is zero.
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@internalComponent
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@released
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@param aPartitionSize Partition size in bytes
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*/
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void TFATBaseBootSector::ComputeTotalSectors(Long64 aPartitionSize)
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{
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	int Log2OfBytesPerSector = Log2(iBytesPerSector);
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	unsigned long TotalSectors64 = (unsigned long)(aPartitionSize >> Log2OfBytesPerSector);
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	if(TotalSectors64 >= 0x10000)
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	{
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			iTotalSectors = 0;
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			iTotalSectors32 = (unsigned int) TotalSectors64;
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	}
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	else
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	{
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			iTotalSectors = (unsigned short)TotalSectors64;
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			iTotalSectors32=0;
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	}
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}
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/**
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Set the media descriptor,0xF8 is the standard for fixed (non removable) media.
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@internalComponent
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@released
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*/
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void TFATBaseBootSector::SetMedia()
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{
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	iMedia=KBPBMedia;
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}
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/**
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This methods gets the media descriptor
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@internalComponent
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@released
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@return media descriptor
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*/
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unsigned char TFATBaseBootSector::Media() const
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{
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	return iMedia;
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}
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/**
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Set the number of hidden sectors in the volume,Count of hidden sector
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preceding the partition.
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@internalComponent
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@released
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*/
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void TFATBaseBootSector::SetHiddenSectors()
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{
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	iHiddenSectors=KDefaultHiddenSectors;
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}
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/**
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Gets the number of hidden sectors in the volume
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@internalComponent
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@released
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@return the number of hidden sectors in a given FAT Volume
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*/
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unsigned int TFATBaseBootSector::HiddenSectors() const
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{
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	return iHiddenSectors;
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}
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/**
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Set the sectors per track preceding the partition.
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@internalComponent
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@released
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*/
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void TFATBaseBootSector::SetSectorsPerTrack()
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{
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	iSectorsPerTrack=KDefaultSectorsPerTrack;// default value for flash memory
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}
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/**
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Gets the number sectors per track in the volume
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@internalComponent
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@released
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@return the number of sectors per track in a given FAT Volume
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*/
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unsigned short TFATBaseBootSector::SectorsPerTrack() const
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{
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	 return iSectorsPerTrack;
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}
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/**
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Set the number of heads
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@internalComponent
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@released
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*/
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void TFATBaseBootSector::SetNumberOfHeads()
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{
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	iNumHeads=KDefaultNumHeads;// default value for flash memory
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}
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/**
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Gets the the number of heads
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@internalComponent
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@released
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@return number of heads in a given FAT Volume
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*/
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unsigned short TFATBaseBootSector::NumberOfHeads() const
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{
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	return iNumHeads;// default value for flash memory
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}
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/**
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Set the Physical drive number,not used in Symbian OS
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@internalComponent
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@released
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*/
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void TFATBaseBootSector::SetBootSectorDriveNumber()
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{
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	iPhysicalDriveNumber=KDefaultDriveNumber;
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}
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/**
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Function to return drive number
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@internalComponent
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@released
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@return Physical drive number, not used in Symbian OS
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*/
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unsigned char TFATBaseBootSector::BootSectorDriveNumber() const
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{
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	return iPhysicalDriveNumber;
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   324
}
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   326
/**
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   327
Set the reserved byte value
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@internalComponent
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@released
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*/
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void TFATBaseBootSector::SetReservedByte()
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{
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	iReservedByte=KDefaultReservedByte;
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}
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   337
/**
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   338
Get the value of reserved byte in boot sector
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   339
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@internalComponent
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   341
@released
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   342
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   343
@return Returns the reserved byte value
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   344
*/
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   345
unsigned char TFATBaseBootSector::ReservedByte() const
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{
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	return iReservedByte;
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   348
}
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   350
/**
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Set the extended boot signature
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   352
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@internalComponent
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   354
@released
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   355
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   356
*/
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   357
void TFATBaseBootSector::SetBootSignature() 
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   358
{
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   359
	iBootSign=KDefaultBootSignature;
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   360
}
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   361
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   362
/**
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   363
Gets the extended boot signature
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   364
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   365
@internalComponent
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   366
@released
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   367
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   368
@return boot signature
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   369
*/
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   370
unsigned char TFATBaseBootSector::BootSignature() const
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   371
{
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   372
	return iBootSign;
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   373
}
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   374
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   375
/**
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   376
Set the unique volume serial number,This ID is usually generated by 
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   377
simply combining the current date and time in to 32 bit value.
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   378
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   379
@internalComponent
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   380
@released
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   381
*/
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   382
void TFATBaseBootSector::SetVolumeId()
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   383
{	
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   384
	time_t rawtime;
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   385
	time(&rawtime);
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   386
	iVolumeId=rawtime;
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diff changeset
   387
}
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   388
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diff changeset
   389
/**
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diff changeset
   390
Returns the volume id 
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diff changeset
   391
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   392
@internalComponent
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   393
@released
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diff changeset
   394
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   395
@return volume id field of the boot sector 
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diff changeset
   396
*/
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diff changeset
   397
unsigned int TFATBaseBootSector::VolumeId() const
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diff changeset
   398
{
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diff changeset
   399
return iVolumeId ;
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parents:
diff changeset
   400
}
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diff changeset
   401
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   402
/**
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   403
Set the volume's label
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   404
044383f39525 Convert Build package from SFL to EPL
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diff changeset
   405
@internalComponent
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parents:
diff changeset
   406
@released
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diff changeset
   407
044383f39525 Convert Build package from SFL to EPL
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diff changeset
   408
@param aVolumeLable Data Drive Volume Label
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diff changeset
   409
*/
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diff changeset
   410
void TFATBaseBootSector::SetVolumeLab(String aVolumeLable)
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diff changeset
   411
{
044383f39525 Convert Build package from SFL to EPL
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diff changeset
   412
	// Set the default value of VolumeLable(i.e. "NO NAME    ") if not provided
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   413
	// by the user.
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parents:
diff changeset
   414
	if (aVolumeLable.empty())	
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   415
	{
044383f39525 Convert Build package from SFL to EPL
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diff changeset
   416
		strcpy(reinterpret_cast<char*>(iVolumeLabel),KDefaultVolumeLabel);
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   417
	}
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diff changeset
   418
	else 
044383f39525 Convert Build package from SFL to EPL
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diff changeset
   419
	{
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   420
		// If the volume label provided is greater than 11 characters then consider only 
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   421
		// the first 11 characters and generate a warning.
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parents:
diff changeset
   422
		int volumeMaxLangth= 11;
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   423
		int volumeLabelSize= aVolumeLable.size();
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   424
		if (volumeLabelSize > volumeMaxLangth)
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   425
		{
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   426
			std::cout<<"Warning: Size overflow for Data Drive Volume Label. Truncating to 11-bytes.\n";	
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   427
			aVolumeLable.resize(volumeMaxLangth);
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   428
			strcpy(reinterpret_cast<char*>(iVolumeLabel),aVolumeLable.c_str());
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   429
			return;
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   430
		}
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   431
		
044383f39525 Convert Build package from SFL to EPL
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diff changeset
   432
		// If the VolumeLable provided is less than 11-characters then pad the 
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   433
		// remaining bytes with white-spaces.		
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   434
		if (volumeLabelSize < KMaxVolumeLabel)
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   435
		{
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   436
			while(volumeLabelSize < 11)
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   437
			{
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   438
				aVolumeLable.append(" ");
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   439
				volumeLabelSize = aVolumeLable.size();
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   440
			}	
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   441
		}
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   442
		strcpy(reinterpret_cast<char*>(iVolumeLabel),aVolumeLable.c_str());
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   443
	}
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   444
}
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   445
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   446
/**
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   447
returns  the volume's label
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   448
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   449
@internalComponent
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   450
@released
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   451
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   452
*/
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   453
unsigned char* TFATBaseBootSector::VolumeLab() 
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   454
{
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   455
	return iVolumeLabel;
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   456
}
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   457
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   458
/**
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   459
Returns the number of reserved sectors on the volume
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   460
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   461
@internalComponent
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   462
@released
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   463
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   464
@return iReservedSectors
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   465
*/
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   466
unsigned short TFATBaseBootSector::ReservedSectors() const
044383f39525 Convert Build package from SFL to EPL
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parents:
diff changeset
   467
{
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   468
	return iReservedSectors;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   469
}
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   470
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   471
/**
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   472
Returns the number of Fats on the volume
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   473
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   474
@internalComponent
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   475
@released
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   476
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   477
@return iNumberOfFats
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   478
*/
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   479
unsigned char TFATBaseBootSector::NumberOfFats() const
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   480
{
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   481
	return iNumberOfFats;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   482
}
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   483
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   484
/**
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   485
Returns the number of entries allowed in the root directory, specific to Fat12/16, zero for FAT32
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   486
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   487
@internalComponent
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   488
@released
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   489
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   490
@return iRootDirEntries
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   491
*/
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   492
unsigned short TFATBaseBootSector::RootDirEntries() const
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   493
{
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   494
	return iRootDirEntries;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   495
}
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   496
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   497
/**
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   498
Returns the total sectors on the volume, 
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   499
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   500
@internalComponent
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   501
@released
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   502
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   503
@return iTotalSectors 
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   504
*/
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   505
unsigned int TFATBaseBootSector::TotalSectors(Long64 aPartitionSize) const
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   506
{
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   507
	if((aPartitionSize/iBytesPerSector)>= 0x10000)	
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   508
	return iTotalSectors32;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   509
	else 
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   510
	return iTotalSectors;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   511
}
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   512
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   513
/**
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   514
Returns base 2 Logarithm of a number 
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   515
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   516
@internalComponent
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   517
@released
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   518
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   519
@param aNum number whose logarithm is to be taken
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   520
@return log base 2 of the number passed
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   521
*/
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   522
int TFATBaseBootSector::Log2(int aNum) 
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   523
{
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   524
	int res=-1;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   525
	while(aNum)
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   526
		{
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   527
		res++;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   528
		aNum>>=1;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   529
		}
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   530
	return(res);
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   531
}
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   532
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   533
/**
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   534
Returns the sectors per cluster ratio
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   535
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   536
@internalComponent
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   537
@released
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   538
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   539
@return iSectorsPerCluster
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   540
*/
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   541
unsigned char TFATBaseBootSector::SectorsPerCluster() const
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   542
{
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   543
	return iSectorsPerCluster;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   544
}
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   545
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   546
/**
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   547
Returns the 16 bit count of total sectors on the volume 
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   548
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   549
@internalComponent
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   550
@released
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   551
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   552
@return iTotalSectors 
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   553
*/
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   554
unsigned short TFATBaseBootSector::LowSectorsCount() const
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   555
{
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   556
	return iTotalSectors;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   557
}
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   558
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   559
/**
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   560
Returns the 32 bit count of total sectors on the volume 
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   561
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   562
@internalComponent
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   563
@released
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   564
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   565
@return iTotalSectors 
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   566
*/
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   567
unsigned int TFATBaseBootSector::HighSectorsCount() const
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   568
{
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   569
	return iTotalSectors32;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   570
}
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   571
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   572
/**
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   573
Returns sectors used for the Fat table, zero for FAT32
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   574
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   575
@internalComponent
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   576
@released
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   577
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   578
@return iFatSectors
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   579
*/
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   580
unsigned short TFATBaseBootSector::FatSectors() const
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   581
{
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   582
	return (unsigned short)iFatSectors;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   583
}
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   584
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   585
/**
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   586
Returns sectors used for the Fat table in FAT32
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   587
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   588
@internalComponent
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   589
@released
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   590
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   591
@return iFatSectors32
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   592
*/
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   593
unsigned int TFATBaseBootSector::FatSectors32() const
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   594
{
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   595
	return iFatSectors32;
044383f39525 Convert Build package from SFL to EPL
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   596
}