~ubuntu-branches/ubuntu/oneiric/partitionmanager/oneiric

/***************************************************************************

 *   Copyright (C) 2008 by Volker Lanz <vl@fidra.de>                       *

 *                                                                         *

 *   This program is free software; you can redistribute it and/or modify  *

 *   it under the terms of the GNU General Public License as published by  *

 *   the Free Software Foundation; either version 2 of the License, or     *

 *   (at your option) any later version.                                   *

 *                                                                         *

 *   This program is distributed in the hope that it will be useful,       *

 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *

 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *

 *   GNU General Public License for more details.                          *

 *                                                                         *

 *   You should have received a copy of the GNU General Public License     *

 *   along with this program; if not, write to the                         *

 *   Free Software Foundation, Inc.,                                       *

 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *

 ***************************************************************************/

 

#include "fs/fat32.h"

 

#include "util/externalcommand.h"

#include "util/capacity.h"

 

#include <QStringList>

 

#include <ctime>

 

namespace FS

{

        fat32::fat32(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label) :

                fat16(firstsector, lastsector, sectorsused, label, FileSystem::Fat32)

        {

        }

 

        qint64 fat32::minCapacity() const

        {

                return 32 * Capacity::unitFactor(Capacity::Byte, Capacity::MiB);

        }

 

        qint64 fat32::maxCapacity() const

        {

                return 8 * Capacity::unitFactor(Capacity::Byte, Capacity::TiB);

        }

        

        bool fat32::create(Report& report, const QString& deviceNode) const

        {

                ExternalCommand cmd(report, "mkfs.msdos", QStringList() << "-F32" << "-v" << deviceNode);

                return cmd.run(-1) && cmd.exitCode() == 0;

        }

 

        bool fat32::updateUUID(Report& report, const QString& deviceNode) const

        {

                qint32 t = time(NULL);

 

                char uuid[4];

                for (quint32 i = 0; i < sizeof(uuid); i++, t >>= 8)

                        uuid[i] = t & 0xff;

                

                ExternalCommand cmd(report, "dd", QStringList() << "of=" + deviceNode << "bs=1" << "count=4" << "seek=67");

 

                if (!cmd.start())

                        return false;

 

                if (cmd.write(uuid, sizeof(uuid)) != sizeof(uuid))

                        return false;

 

                return cmd.waitFor(-1);

        }

}