61 lines
2.4 KiB
C
61 lines
2.4 KiB
C
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/*************************************************************************
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* Copyright (C) 2010 by Volker Lanz <vl@fidra.de> *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License as *
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* published by the Free Software Foundation; either version 3 of *
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* the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>.*
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*************************************************************************/
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#if !defined(COPYSOURCESHRED__H)
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#define COPYSOURCESHRED__H
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#include "../core/copysource.h"
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#include <QFile>
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class CopyTarget;
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/** A source for securely overwriting a partition (shredding).
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Represents a source of data (random or zeros) to copy from. Used to securely overwrite data on disk.
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@author Volker Lanz <vl@fidra.de>
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*/
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class CopySourceShred : public CopySource
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{
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public:
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CopySourceShred(qint64 size, qint32 sectorsize);
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public:
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virtual bool open();
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virtual bool readSectors(void* buffer, qint64 readOffset, qint64 numSectors);
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virtual qint64 length() const;
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virtual qint32 sectorSize() const { return m_SectorSize; } /**< @return the file's sector size */
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virtual bool overlaps(const CopyTarget&) const { return false; } /**< @return false for shred source */
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virtual qint64 firstSector() const { return 0; } /**< @return 0 for shred source */
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virtual qint64 lastSector() const { return length(); } /**< @return equal to length for shred source. @see length() */
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protected:
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QFile& sourceFile() { return m_SourceFile; }
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const QFile& sourceFile() const { return m_SourceFile; }
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qint32 size() const { return m_Size; }
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private:
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qint64 m_Size;
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qint32 m_SectorSize;
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QFile m_SourceFile;
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};
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#endif
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