71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
/*************************************************************************
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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(KPMCORE_COPYSOURCESHRED_H)
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#define KPMCORE_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, bool randomShred);
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public:
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bool open() override;
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bool readData(QByteArray& buffer, qint64 readOffset, qint64 size) override;
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qint64 length() const override;
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bool overlaps(const CopyTarget&) const override {
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return false; /**< @return false for shred source */
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}
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qint64 firstByte() const override {
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return 0; /**< @return 0 for shred source */
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}
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qint64 lastByte() const override {
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return length(); /**< @return equal to length for shred source. @see length() */
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}
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protected:
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QFile& sourceFile() {
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return m_SourceFile;
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}
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const QFile& sourceFile() const {
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return m_SourceFile;
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}
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qint64 size() const {
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return m_Size;
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}
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private:
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qint64 m_Size;
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QFile m_SourceFile;
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};
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#endif
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