123 lines
4.8 KiB
C++
123 lines
4.8 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 "fs/btrfs.h"
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#include "util/externalcommand.h"
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#include "util/capacity.h"
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#include <QString>
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#include <QRegExp>
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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::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("mkfs.btrfs") ? cmdSupportFileSystem : cmdSupportNone;
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m_Check = findExternal("fsck.btrfs", QStringList(), 1) ? cmdSupportFileSystem : cmdSupportNone;
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m_Grow = (m_Check != cmdSupportNone && findExternal("btrfsctl")) ? cmdSupportFileSystem : cmdSupportNone;
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m_Shrink = (m_Grow != cmdSupportNone && m_GetUsed != cmdSupportNone) ? cmdSupportFileSystem : cmdSupportNone;
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m_GetUsed = findExternal("btrfs-debug-tree") ? cmdSupportFileSystem : cmdSupportNone;
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// TODO: are those not possible with btrfs (yet)?
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m_SetLabel = cmdSupportNone;
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m_UpdateUUID = 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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qint64 btrfs::maxCapacity() const
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{
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return Capacity::unitFactor(Capacity::Byte, Capacity::EiB);
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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("btrfs-debug-tree", QStringList() << deviceNode);
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if (cmd.run())
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{
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QRegExp rxBytesUsed("\nbytes used (\\d+)");
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if (rxBytesUsed.indexIn(cmd.output()) != -1)
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return rxBytesUsed.cap(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, "btrfsck", QStringList() << 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) const
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{
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ExternalCommand cmd(report, "mkfs.btrfs", QStringList() << 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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ExternalCommand cmd(report, "btrfsctl", QStringList() << deviceNode << "-r" << QString::number(length));
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return cmd.run(-1) && cmd.exitCode() == 0;
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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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Q_UNUSED(report);
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Q_UNUSED(deviceNode);
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Q_UNUSED(newLabel);
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return false;
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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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Q_UNUSED(report);
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Q_UNUSED(deviceNode);
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return false;
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}
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}
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