64 lines
2.5 KiB
C++
64 lines
2.5 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 modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (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, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
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***************************************************************************/
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#include "core/copysourcerandom.h"
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#include <kdebug.h>
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/** Constructs a CopySourceRandom with the given @p size
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@param s the size the copy source will (pretend to) have
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@param sectorsize the sectorsize the copy source will (pretend to) have
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*/
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CopySourceRandom::CopySourceRandom (qint64 s, qint32 sectorsize) :
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CopySource(),
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m_Size(s),
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m_SectorSize(sectorsize),
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m_Random("/dev/urandom")
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{
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}
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/** Opens the random source.
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@return true on success
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*/
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bool CopySourceRandom::open()
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{
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return random().open(QIODevice::ReadOnly);
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}
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/** Returns the length of the random source in sectors.
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@return length of the source in sectors.
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*/
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qint64 CopySourceRandom::length() const
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{
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return size() / sectorSize();
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}
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/** Reads the given number of sectors from the random source into the given buffer.
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@param buffer buffer to store the sectors read in
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@param readOffset offset where to begin reading (unused)
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@param numSectors number of sectors to read
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@return true on success
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*/
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bool CopySourceRandom::readSectors(void* buffer, qint64 readOffset, qint64 numSectors)
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{
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Q_UNUSED(readOffset);
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return random().read(static_cast<char*>(buffer), numSectors * sectorSize()) == numSectors * sectorSize();
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}
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