devencdiskutils/DevEncCommonUtils/src/DevEncDiskUtils.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 31 Aug 2010 16:04:40 +0300
branchRCL_3
changeset 21 09b1ac925e3f
parent 11 9971b621ef6c
child 22 03674e5abf46
permissions -rw-r--r--
Revision: 201033 Kit: 201035
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/*
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* Copyright (c) 2007 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 "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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*
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*/
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#include <e32base.h>
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#include <f32file.h> // for TDriveNumber
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#include <centralrepository.h>
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#include <e32property.h>
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#include <UiklafInternalCRKeys.h> // for disc space
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#include "DevEncCommonUtils.hrh"
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#include "DevEncDiskUtils.h"
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#include "DevEncLog.h"
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/*static const TPtrC KDriveLetter[] = {
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    _L("A"), _L("B"), _L("C"), _L("D"), _L("E"), _L("F"), _L("G"), _L("H"),
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    _L("I"), _L("J"), _L("K"), _L("L"), _L("M"), _L("N"), _L("O"), _L("P"),
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    _L("Q"), _L("R"), _L("S"), _L("T"), _L("U"), _L("V"), _L("W"), _L("X"),
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    _L("Y"), _L("Z") };*/
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_LIT( KA, "A"); _LIT( KB, "B");_LIT( KC, "C"); _LIT( KD, "D");
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_LIT( KE, "E"); _LIT( KF, "F"); _LIT( KG, "G"); _LIT( KH, "H");
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_LIT( KI, "I"); _LIT( KJ, "J");_LIT( KK, "K"); _LIT( KL, "L");
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_LIT( KM, "M"); _LIT( KN, "N"); _LIT( KO, "O"); _LIT( KP, "P");
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_LIT( KQ, "Q"); _LIT( KR, "R"); _LIT( KS, "S"); _LIT( KT, "T");
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_LIT( KU, "U"); _LIT( KV, "V"); _LIT( KW, "W"); _LIT( KX, "X");
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_LIT( KY, "Y"); _LIT( KZ, "Z");
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_LIT( KContentTestFile, "c:\\content_test.txt" );
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static const TUint32 KTestBlockSizeBt = 1024 * sizeof( TUint32 );
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static const TUint32 KTestBlocks      = 320;
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static const TInt32  KMaxInt          = 2147483647;       
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// --------------------------------------------------------------------------
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// CDevEncDiskUtils::DriveLetter()
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// 
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// --------------------------------------------------------------------------
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EXPORT_C TInt CDevEncDiskUtils::DriveLetter( TInt aNumber,
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                                             TDes& aResult )
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    {
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    const TInt KNumOfDriveLetters( 25 );
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    const TPtrC KDriveLetter[] = {
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        KA(), KB(), KC(), KD(), KE(), KF(), KG(), KH(),
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        KI(), KJ(), KK(), KL(), KM(), KN(), KO(), KP(),
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        KQ(), KR(), KS(), KT(), KU(), KV(), KW(), KX(),
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        KY(), KZ() };
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    if ( aNumber > KNumOfDriveLetters )
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        {
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        return KErrOverflow;
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        }
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    aResult.Append( KDriveLetter[ aNumber ] );
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    return KErrNone;
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    }
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// --------------------------------------------------------------------------
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// CDevEncDiskUtils::DrivePath()
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// 
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// --------------------------------------------------------------------------
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EXPORT_C void CDevEncDiskUtils::DrivePath( TDes& aDes, TDriveNumber aNumber )
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    {
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    DriveLetter( aNumber, aDes );
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    aDes.Append( _L(":\\") );
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    }
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// --------------------------------------------------------------------------
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// CDevEncDiskUtils::DoWriteTestFileL()
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// 
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// --------------------------------------------------------------------------
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void CDevEncDiskUtils::DoWriteTestFileL()
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    {
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    RFile file;
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    RFs fs;
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    User::LeaveIfError( fs.Connect() );
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    CleanupClosePushL( fs );
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    User::LeaveIfError( file.Replace( fs, KContentTestFile, EFileWrite ) );
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    CleanupClosePushL( file );
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    HBufC8* buf = HBufC8::NewL( KTestBlockSizeBt );
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    CleanupStack::PushL( buf );
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    TPtr8 pbuf = buf->Des();
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    pbuf.SetLength( KTestBlockSizeBt );
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    for( TUint32 i=0; i < KTestBlocks; i++ )
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        {
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        for( TUint32 k=0; k < KTestBlockSizeBt; k++ )
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            pbuf[k] = 0xff;
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        User::LeaveIfError( file.Write( pbuf ) );
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        }
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    CleanupStack::PopAndDestroy(3);
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    }
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// --------------------------------------------------------------------------
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// CDevEncDiskUtils::WriteTestFile()
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// 
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// --------------------------------------------------------------------------
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EXPORT_C void CDevEncDiskUtils::WriteTestFile()
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    {
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    if ( ! RProcess().HasCapability( ECapabilityDiskAdmin ) )
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        {
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        DFLOG( "Process does not have DiskAdmin capability" );
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        return;
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        }
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    DFLOG("Writing test file");
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    TRAPD( err, DoWriteTestFileL() );
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    if( err )
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        {
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        DFLOG2("...failed %d", err);
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        }
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    else
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        {
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        DFLOG( "...ok" );
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        }
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    }
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// --------------------------------------------------------------------------
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// CDevEncDiskUtils::DoVerifyTestFileL()
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// 
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// --------------------------------------------------------------------------
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void CDevEncDiskUtils::DoVerifyTestFileL()
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    {
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    if ( ! RProcess().HasCapability( ECapabilityDiskAdmin ) )
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        {
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        DFLOG( "Process does not have DiskAdmin capability" );
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        return;
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        }
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    RFile file;
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    RFs fs;
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    User::LeaveIfError( fs.Connect() );
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    CleanupClosePushL( fs );
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    User::LeaveIfError( file.Open( fs, KContentTestFile, EFileRead ) );
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    CleanupClosePushL( file );
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    HBufC8* buf = HBufC8::NewL(KTestBlockSizeBt);
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    CleanupStack::PushL( buf );
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    TPtr8 pbuf = buf->Des();
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    pbuf.SetLength( KTestBlockSizeBt );
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   160
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    for( TUint32 i=0; i < KTestBlocks; i++ )
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        {
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        User::LeaveIfError( file.Read( pbuf ) );
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   164
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        for( TUint32 k=0; k < KTestBlockSizeBt; k++ )
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            {
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            if( pbuf[k] != 0xff )
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                DFLOG3("pos=%d val=%d", (i * KTestBlockSizeBt + k), pbuf[k]);
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            }
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        }
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    CleanupStack::PopAndDestroy(3);
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    }
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// --------------------------------------------------------------------------
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// CDevEncDiskUtils::VerifyTestFile()
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// 
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// --------------------------------------------------------------------------
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EXPORT_C void CDevEncDiskUtils::VerifyTestFile()
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    {
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    DFLOG("Verifying test file");
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    TRAPD( err, DoVerifyTestFileL() );
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    if( err )
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        {
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        DFLOG2("...failed %d", err);
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        }
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    else
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        {
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        DFLOG( "..ok" );
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        }
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    }
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// --------------------------------------------------------------------------
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// CDevEncDiskUtils::DeleteTestFile()
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// 
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// --------------------------------------------------------------------------
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EXPORT_C void CDevEncDiskUtils::DeleteTestFile()
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    {
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    DFLOG("Deleting test file");
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    RFs fs;
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    TInt err = fs.Connect();
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    if( !err )
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        {
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        err = fs.Delete( KContentTestFile );
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   207
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        if( !err || err == KErrNotFound )
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            {
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            DFLOG("...ok");
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            }
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        else
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            {
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            DFLOG2( "...failed %d", err );
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   215
            }
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        }
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   217
    else
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        {
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        DFLOG2( "fs.Connect() failed %d", err );
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        }
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   221
    }
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   222
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// --------------------------------------------------------------------------
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// CDevEncDiskUtils::DiskFinalize()
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// 
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// --------------------------------------------------------------------------
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EXPORT_C TInt CDevEncDiskUtils::DiskFinalize( TDriveNumber aNumber )
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    {
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    if ( ! RProcess().HasCapability( ECapabilityDiskAdmin ) )
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        {
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        DFLOG( "Process does not have DiskAdmin capability" );
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        return KErrAccessDenied;
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   233
        }
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   234
    
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   235
    DFLOG("Finalizing");
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   236
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    RArray <TFileName> temps;
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    RArray <RFile> files;
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   239
    RFs fs;
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   240
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    TInt err = fs.Connect();
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   242
    if( err )
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   243
        DFLOG2( "..fs.Connect fail %d", err);
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   244
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    TBool freeSpace = ETrue;
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   246
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    TVolumeInfo volumeInfo;
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   248
    err = fs.Volume( volumeInfo, aNumber );
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   249
    if( err )
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   250
        DFLOG2( "..fs.Volume fail %d", err );
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   251
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    TInt64 size = 0;
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   253
    TInt64 memoryCriticalSpace(0);
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   254
    TRAP(err, memoryCriticalSpace = FindCriticalLevelTresholdL());
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   255
    if (!err)
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        return err;
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   257
    TInt64 memoryWarningSpace(0);
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   258
    TRAP(err, memoryWarningSpace = FindWarningLevelTresholdL());
0
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   259
    if (!err)
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   260
        return err;
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   261
    
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   262
    DFLOG2( "CDevEncDiskUtils::DiskFinalize => memoryCriticalSpace = %d", (TInt) memoryCriticalSpace );
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diff changeset
   263
    DFLOG2( "CDevEncDiskUtils::DiskFinalize => memoryWarningSpace = %d", (TInt) memoryWarningSpace );
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diff changeset
   264
    
21
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   265
    //create the number of files needed to fill the mmc free space
0
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   266
    while( freeSpace )
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   267
        {
21
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   268
        /* The real warning space is a percentage of the free space */
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   269
        TInt64 newMemoryWarningSpace = ( TInt64 ) ( volumeInfo.iSize*( 100 - memoryWarningSpace ) ) / 100;
0
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diff changeset
   270
        DFLOG2( "CDevEncDiskUtils::DiskFinalize => newMemoryWarningSpace = %d", (TInt) newMemoryWarningSpace );
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   271
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   272
        if( TInt64( volumeInfo.iFree ) > TInt64( KMaxInt ) )
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   273
        	{
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   274
            size = KMaxInt;
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   275
            }
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   276
        else
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   277
        	{
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   278
        	size = Max( 0LL, TInt64( volumeInfo.iFree ) - memoryCriticalSpace - newMemoryWarningSpace );
0
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   279
        	}
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   280
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        TFileName temp;
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        RFile file;
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   283
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   284
        if( !err )
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   285
            {
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   286
            TBuf<8> path;
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   287
            DrivePath( path, aNumber );
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diff changeset
   288
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   289
            err = file.Temp( fs, path, temp, EFileWrite );
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diff changeset
   290
            if( err )
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parents:
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   291
                DFLOG2( "..file.Temp fail %d", err );
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   292
            }
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diff changeset
   293
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   294
        err = file.SetSize( ( TInt ) size );
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diff changeset
   295
        if( err )
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parents:
diff changeset
   296
            DFLOG2( "..file.SetSize fail %d", err );
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diff changeset
   297
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   298
        files.Append( file );
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diff changeset
   299
        temps.Append( temp );
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diff changeset
   300
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diff changeset
   301
        err = fs.Volume( volumeInfo, aNumber );
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diff changeset
   302
        if( err )
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parents:
diff changeset
   303
            DFLOG2( "..fs.Volume fail %d", err );    
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diff changeset
   304
21
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diff changeset
   305
        if( TInt64( volumeInfo.iFree ) <= memoryCriticalSpace + newMemoryWarningSpace )
0
164170e6151a Revision: 201004
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parents:
diff changeset
   306
        	{
21
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diff changeset
   307
            freeSpace = EFalse;
0
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parents:
diff changeset
   308
            }
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parents:
diff changeset
   309
        }
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diff changeset
   310
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   311
    //delete the created files
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   312
    for( TInt i=0;i < files.Count();i++ )
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diff changeset
   313
    	{
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   314
        files[i].Close();
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parents:
diff changeset
   315
        fs.Delete( temps[i] ); // Error value ignored
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parents:
diff changeset
   316
        }
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parents:
diff changeset
   317
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parents:
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   318
    files.Close();
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parents:
diff changeset
   319
    temps.Close();
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parents:
diff changeset
   320
    fs.Close();
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parents:
diff changeset
   321
    return err;
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parents:
diff changeset
   322
    }
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diff changeset
   323
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diff changeset
   324
// --------------------------------------------------------------------------
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parents:
diff changeset
   325
// CDevEncDiskUtils::FindValueL()
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parents:
diff changeset
   326
// 
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   327
// --------------------------------------------------------------------------
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diff changeset
   328
TInt CDevEncDiskUtils::FindValueL( const TUid aRepositoryUid, const TUint aCRKey )
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parents:
diff changeset
   329
	{
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diff changeset
   330
	TInt val( 0 );
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parents:
diff changeset
   331
    CRepository* repository = CRepository::NewLC( aRepositoryUid );
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parents:
diff changeset
   332
    User::LeaveIfError( repository->Get( aCRKey, val ) );
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parents:
diff changeset
   333
    CleanupStack::PopAndDestroy( repository );
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parents:
diff changeset
   334
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diff changeset
   335
    return val;
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parents:
diff changeset
   336
	}
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parents:
diff changeset
   337
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   338
// --------------------------------------------------------------------------
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diff changeset
   339
// CDevEncDiskUtils::FindCriticalLevelTresholdL()
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diff changeset
   340
// 
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   341
// --------------------------------------------------------------------------
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parents:
diff changeset
   342
TInt64 CDevEncDiskUtils::FindCriticalLevelTresholdL()
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parents:
diff changeset
   343
	{
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diff changeset
   344
    return (TInt64) FindValueL( KCRUidUiklaf, KUikOODDiskCriticalThreshold );
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parents:
diff changeset
   345
	}
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parents:
diff changeset
   346
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diff changeset
   347
// --------------------------------------------------------------------------
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// CDevEncDiskUtils::FindWarningLevelTresholdL()
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// 
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// --------------------------------------------------------------------------
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TInt64 CDevEncDiskUtils::FindWarningLevelTresholdL()
0
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	{
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	return (TInt64) FindValueL( KCRUidUiklaf, /*KUikOODDiskWarningThreshold*/KUikOODDiskFreeSpaceWarningNoteLevel );
0
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	}
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// End of file