70 lines
2.5 KiB
C++
70 lines
2.5 KiB
C++
/*************************************************************************
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* Copyright (C) 2008 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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#include "fs/fat32.h"
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#include "util/externalcommand.h"
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#include "util/capacity.h"
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#include <QStringList>
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#include <ctime>
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namespace FS
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{
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fat32::fat32(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label) :
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fat16(firstsector, lastsector, sectorsused, label, FileSystem::Fat32)
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{
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}
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qint64 fat32::minCapacity() const
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{
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return 32 * Capacity::unitFactor(Capacity::Byte, Capacity::MiB);
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}
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qint64 fat32::maxCapacity() const
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{
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return 16 * Capacity::unitFactor(Capacity::Byte, Capacity::TiB) - Capacity::unitFactor(Capacity::Byte, Capacity::MiB);
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}
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bool fat32::create(Report& report, const QString& deviceNode)
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{
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ExternalCommand cmd(report, QStringLiteral("mkfs.fat"), { QStringLiteral("-F32"), QStringLiteral("-I"), QStringLiteral("-v"), deviceNode });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool fat32::updateUUID(Report& report, const QString& deviceNode) const
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{
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qint32 t = time(nullptr);
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char uuid[4];
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for (auto &u : uuid) {
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u = t & 0xff;
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t >>= 8;
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}
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ExternalCommand cmd(report, QStringLiteral("dd"), { QStringLiteral("of=") + deviceNode, QStringLiteral("bs=1"), QStringLiteral("count=4"), QStringLiteral("seek=67") });
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if (!cmd.start())
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return false;
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if (cmd.write(uuid, sizeof(uuid)) != sizeof(uuid))
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return false;
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return cmd.waitFor(-1);
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}
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}
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