198 lines
7.0 KiB
C++
198 lines
7.0 KiB
C++
/*************************************************************************
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* Copyright (C) 2008,2009 by Volker Lanz <vl@fidra.de> *
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* Copyright (C) 2016 by Andrius Štikonas <andrius@stikonas.eu> *
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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/linuxswap.h"
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#include "util/externalcommand.h"
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#include <KLocalizedString>
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#include <QFileInfo>
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#include <QRegularExpression>
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#include <QTextStream>
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namespace FS
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{
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FileSystem::CommandSupportType linuxswap::m_Create = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType linuxswap::m_Grow = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType linuxswap::m_Shrink = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType linuxswap::m_Move = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType linuxswap::m_Copy = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType linuxswap::m_GetUsed = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType linuxswap::m_GetLabel = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType linuxswap::m_SetLabel = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType linuxswap::m_GetUUID = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType linuxswap::m_UpdateUUID = FileSystem::cmdSupportNone;
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linuxswap::linuxswap(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label) :
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FileSystem(firstsector, lastsector, sectorsused, label, FileSystem::Type::LinuxSwap)
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{
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}
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void linuxswap::init()
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{
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m_SetLabel = m_Shrink = m_Grow = m_Create = m_UpdateUUID = (findExternal(QStringLiteral("mkswap"))) ? cmdSupportFileSystem : cmdSupportNone;
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m_GetLabel = cmdSupportCore;
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m_GetUsed = cmdSupportFileSystem;
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m_Copy = cmdSupportFileSystem;
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m_Move = cmdSupportCore;
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m_GetUUID = cmdSupportCore;
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}
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bool linuxswap::supportToolFound() const
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{
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return
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m_GetUsed != cmdSupportNone &&
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m_GetLabel != cmdSupportNone &&
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m_SetLabel != cmdSupportNone &&
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m_Create != cmdSupportNone &&
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// m_Check != cmdSupportNone &&
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m_UpdateUUID != cmdSupportNone &&
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m_Grow != cmdSupportNone &&
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m_Shrink != cmdSupportNone &&
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m_Copy != cmdSupportNone &&
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m_Move != cmdSupportNone &&
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// m_Backup != cmdSupportNone &&
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m_GetUUID != cmdSupportNone;
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}
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FileSystem::SupportTool linuxswap::supportToolName() const
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{
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return SupportTool(QStringLiteral("util-linux"), QUrl(QStringLiteral("http://www.kernel.org/pub/linux/utils/util-linux-ng/")));
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}
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int linuxswap::maxLabelLength() const
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{
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return 15;
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}
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bool linuxswap::create(Report& report, const QString& deviceNode)
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{
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ExternalCommand cmd(report, QStringLiteral("mkswap"), { deviceNode });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool linuxswap::resize(Report& report, const QString& deviceNode, qint64 length) const
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{
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Q_UNUSED(length)
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const QString label = readLabel(deviceNode);
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const QString uuid = readUUID(deviceNode);
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QStringList args;
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if (!label.isEmpty())
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args << QStringLiteral("--label") << label;
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if (!uuid.isEmpty())
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args << QStringLiteral("--uuid") << uuid;
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args << deviceNode;
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ExternalCommand cmd(report, QStringLiteral("mkswap"), args);
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool linuxswap::copy(Report& report, const QString& targetDeviceNode, const QString& sourceDeviceNode) const
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{
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const QString label = readLabel(sourceDeviceNode);
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const QString uuid = readUUID(sourceDeviceNode);
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QStringList args;
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if (!label.isEmpty())
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args << QStringLiteral("--label") << label;
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if (!uuid.isEmpty())
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args << QStringLiteral("--uuid") << uuid;
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args << targetDeviceNode;
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ExternalCommand cmd(report, QStringLiteral("mkswap"), args);
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool linuxswap::writeLabel(Report& report, const QString& deviceNode, const QString& newLabel)
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{
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ExternalCommand cmd(report, QStringLiteral("swaplabel"), { QStringLiteral("--label"), newLabel, deviceNode });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool linuxswap::writeLabelOnline(Report& report, const QString& deviceNode, const QString& mountPoint, const QString& newLabel)
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{
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Q_UNUSED(mountPoint)
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return writeLabel(report, deviceNode, newLabel);
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}
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QString linuxswap::mountTitle() const
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{
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return xi18nc("@title:menu", "Activate swap");
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}
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QString linuxswap::unmountTitle() const
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{
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return xi18nc("@title:menu", "Deactivate swap");
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}
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bool linuxswap::canMount(const QString& deviceNode, const QString& mountPoint) const {
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Q_UNUSED(deviceNode)
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// linux swap doesn't require mount point to activate
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return mountPoint != QStringLiteral("/");
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}
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bool linuxswap::mount(Report& report, const QString& deviceNode, const QString& mountPoint)
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{
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Q_UNUSED(mountPoint)
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ExternalCommand cmd(report, QStringLiteral("swapon"), { deviceNode });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool linuxswap::unmount(Report& report, const QString& deviceNode)
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{
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ExternalCommand cmd(report, QStringLiteral("swapoff"), { deviceNode });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool linuxswap::updateUUID(Report& report, const QString& deviceNode) const
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{
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const QString label = readLabel(deviceNode);
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QStringList args;
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if (!label.isEmpty())
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args << QStringLiteral("--label") << label;
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args << deviceNode;
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ExternalCommand cmd(report, QStringLiteral("mkswap"), args);
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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qint64 linuxswap::readUsedCapacity(const QString& deviceNode) const
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{
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QFile swapsFile(QStringLiteral("/proc/swaps"));
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if (swapsFile.open(QIODevice::ReadOnly)) {
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QByteArray data = swapsFile.readAll();
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swapsFile.close();
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QTextStream in(&data);
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while (!in.atEnd()) {
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QStringList line = in.readLine().split(QRegularExpression(QStringLiteral("\\s+")));
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QFileInfo kernelPath(deviceNode);
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if (line[0] == kernelPath.canonicalFilePath())
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return line[3].toLongLong() * 1024;
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}
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}
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return -1;
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}
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}
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