198 lines
8.2 KiB
C++
198 lines
8.2 KiB
C++
/*************************************************************************
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* Copyright (C) 2012 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/btrfs.h"
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#include "util/externalcommand.h"
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#include "util/capacity.h"
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#include "util/report.h"
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#include <QRegularExpression>
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#include <QString>
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#include <QTemporaryDir>
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#include <KLocalizedString>
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namespace FS
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{
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FileSystem::CommandSupportType btrfs::m_GetUsed = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType btrfs::m_GetLabel = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType btrfs::m_Create = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType btrfs::m_Grow = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType btrfs::m_Shrink = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType btrfs::m_Move = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType btrfs::m_Check = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType btrfs::m_Copy = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType btrfs::m_Backup = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType btrfs::m_SetLabel = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType btrfs::m_UpdateUUID = FileSystem::cmdSupportNone;
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FileSystem::CommandSupportType btrfs::m_GetUUID = FileSystem::cmdSupportNone;
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btrfs::btrfs(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label) :
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FileSystem(firstsector, lastsector, sectorsused, label, FileSystem::Type::Btrfs)
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{
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}
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void btrfs::init()
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{
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m_Create = findExternal(QStringLiteral("mkfs.btrfs")) ? cmdSupportFileSystem : cmdSupportNone;
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m_Check = findExternal(QStringLiteral("btrfs")) ? cmdSupportFileSystem : cmdSupportNone;
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m_Grow = m_Check;
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m_GetUsed = m_Check;
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m_Shrink = (m_Grow != cmdSupportNone && m_GetUsed != cmdSupportNone) ? cmdSupportFileSystem : cmdSupportNone;
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m_SetLabel = m_Check;
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m_UpdateUUID = findExternal(QStringLiteral("btrfstune")) ? cmdSupportFileSystem : cmdSupportNone;
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m_Copy = (m_Check != cmdSupportNone) ? cmdSupportCore : cmdSupportNone;
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m_Move = (m_Check != cmdSupportNone) ? cmdSupportCore : cmdSupportNone;
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m_GetLabel = cmdSupportCore;
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m_Backup = cmdSupportCore;
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m_GetUUID = cmdSupportCore;
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}
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bool btrfs::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 btrfs::supportToolName() const
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{
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return SupportTool(QStringLiteral("btrfs-tools"), QUrl(QStringLiteral("http://btrfs.wiki.kernel.org/")));
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}
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qint64 btrfs::minCapacity() const
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{
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return 256 * Capacity::unitFactor(Capacity::Unit::Byte, Capacity::Unit::MiB);
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}
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qint64 btrfs::maxCapacity() const
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{
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return Capacity::unitFactor(Capacity::Unit::Byte, Capacity::Unit::EiB);
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}
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int btrfs::maxLabelLength() const
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{
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return 255;
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}
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qint64 btrfs::readUsedCapacity(const QString& deviceNode) const
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{
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ExternalCommand cmd(QStringLiteral("btrfs"),
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{ QStringLiteral("filesystem"), QStringLiteral("show"), QStringLiteral("--raw"), deviceNode });
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if (cmd.run(-1) && cmd.exitCode() == 0) {
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QRegularExpression re(QStringLiteral(" used (\\d+) path ") + deviceNode);
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QRegularExpressionMatch reBytesUsed = re.match(cmd.output());
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if (reBytesUsed.hasMatch())
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return reBytesUsed.captured(1).toLongLong();
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}
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return -1;
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}
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bool btrfs::check(Report& report, const QString& deviceNode) const
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{
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ExternalCommand cmd(report, QStringLiteral("btrfs"), { QStringLiteral("check"), QStringLiteral("--repair"), deviceNode });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool btrfs::create(Report& report, const QString& deviceNode)
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{
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ExternalCommand cmd(report, QStringLiteral("mkfs.btrfs"), { QStringLiteral("--force"), deviceNode });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool btrfs::resize(Report& report, const QString& deviceNode, qint64 length) const
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{
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QTemporaryDir tempDir;
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if (!tempDir.isValid()) {
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report.line() << xi18nc("@info:progress", "Resizing Btrfs file system on partition <filename>%1</filename> failed: Could not create temp dir.", deviceNode);
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return false;
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}
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bool rval = false;
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ExternalCommand mountCmd(report, QStringLiteral("mount"),
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{ QStringLiteral("--verbose"), QStringLiteral("--types"), QStringLiteral("btrfs"), deviceNode, tempDir.path() });
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if (mountCmd.run(-1) && mountCmd.exitCode() == 0) {
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ExternalCommand resizeCmd(report, QStringLiteral("btrfs"),
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{ QStringLiteral("filesystem"), QStringLiteral("resize"), QString::number(length), tempDir.path() });
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if (resizeCmd.run(-1) && resizeCmd.exitCode() == 0)
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rval = true;
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else
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report.line() << xi18nc("@info:progress", "Resizing Btrfs file system on partition <filename>%1</filename> failed: btrfs file system resize failed.", deviceNode);
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ExternalCommand unmountCmd(report, QStringLiteral("umount"), { tempDir.path() });
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if (!unmountCmd.run(-1) && unmountCmd.exitCode() == 0)
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report.line() << xi18nc("@info:progress", "<warning>Resizing Btrfs file system on partition <filename>%1</filename>: Unmount failed.</warning>", deviceNode);
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} else
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report.line() << xi18nc("@info:progress", "Resizing Btrfs file system on partition <filename>%1</filename> failed: Initial mount failed.", deviceNode);
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return rval;
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}
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bool btrfs::resizeOnline(Report& report, const QString& deviceNode, const QString& mountPoint, qint64 length) const
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{
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ExternalCommand resizeCmd(report, QStringLiteral("btrfs"),
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{ QStringLiteral("filesystem"), QStringLiteral("resize"), QString::number(length), mountPoint });
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if (resizeCmd.run(-1) && resizeCmd.exitCode() == 0)
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return true;
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report.line() << xi18nc("@info:progress", "Resizing Btrfs file system on partition <filename>%1</filename> failed: btrfs file system resize failed.", deviceNode);
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return false;
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}
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bool btrfs::writeLabel(Report& report, const QString& deviceNode, const QString& newLabel)
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{
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ExternalCommand cmd(report, QStringLiteral("btrfs"), { QStringLiteral("filesystem"), QStringLiteral("label"), deviceNode, newLabel });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool btrfs::writeLabelOnline(Report& report, const QString& deviceNode, const QString& mountPoint, const QString& newLabel)
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{
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Q_UNUSED(deviceNode)
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ExternalCommand cmd(report, QStringLiteral("btrfs"), { QStringLiteral("filesystem"), QStringLiteral("label"), mountPoint, newLabel });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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bool btrfs::updateUUID(Report& report, const QString& deviceNode) const
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{
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ExternalCommand cmd(report, QStringLiteral("btrfstune"), { QStringLiteral("-f"), QStringLiteral("-u"), deviceNode });
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return cmd.run(-1) && cmd.exitCode() == 0;
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}
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}
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