162 lines
6.0 KiB
C++
162 lines
6.0 KiB
C++
/***************************************************************************
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* Copyright (C) 2008,2009 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/reiserfs.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 <QStringList>
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#include <QRegExp>
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#include <uuid/uuid.h>
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namespace FS
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{
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FileSystem::SupportType reiserfs::m_GetUsed = FileSystem::SupportNone;
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FileSystem::SupportType reiserfs::m_GetLabel = FileSystem::SupportNone;
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FileSystem::SupportType reiserfs::m_Create = FileSystem::SupportNone;
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FileSystem::SupportType reiserfs::m_Grow = FileSystem::SupportNone;
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FileSystem::SupportType reiserfs::m_Shrink = FileSystem::SupportNone;
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FileSystem::SupportType reiserfs::m_Move = FileSystem::SupportNone;
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FileSystem::SupportType reiserfs::m_Check = FileSystem::SupportNone;
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FileSystem::SupportType reiserfs::m_Copy = FileSystem::SupportNone;
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FileSystem::SupportType reiserfs::m_Backup = FileSystem::SupportNone;
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FileSystem::SupportType reiserfs::m_SetLabel = FileSystem::SupportNone;
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FileSystem::SupportType reiserfs::m_UpdateUUID = FileSystem::SupportNone;
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FileSystem::SupportType reiserfs::m_GetUUID = FileSystem::SupportNone;
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reiserfs::reiserfs(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label) :
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FileSystem(firstsector, lastsector, sectorsused, label, FileSystem::ReiserFS)
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{
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}
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void reiserfs::init()
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{
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m_GetLabel = m_GetUsed = findExternal("debugreiserfs", QStringList(), 16) ? SupportExternal : SupportNone;
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m_SetLabel = findExternal("reiserfstune") ? SupportExternal : SupportNone;
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m_Create = findExternal("mkfs.reiserfs") ? SupportExternal : SupportNone;
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m_Check = findExternal("fsck.reiserfs") ? SupportExternal : SupportNone;
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m_Move = m_Copy = (m_Check != SupportNone) ? SupportInternal : SupportNone;
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m_Grow = findExternal("resize_reiserfs", QStringList(), 16) ? SupportExternal : SupportNone;
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m_Shrink = (m_GetUsed != SupportNone && m_Grow != SupportNone) ? SupportExternal : SupportNone;
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m_Backup = SupportInternal;
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m_UpdateUUID = findExternal("reiserfstune") ? SupportExternal : SupportNone;
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m_GetUUID = findIdUtil() ? SupportExternal : SupportNone;
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}
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qint64 reiserfs::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 reiserfs::maxCapacity() const
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{
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return 16 * Capacity::unitFactor(Capacity::Byte, Capacity::TiB);
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}
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qint64 reiserfs::readUsedCapacity(const QString& deviceNode) const
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{
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ExternalCommand cmd("debugreiserfs", QStringList() << deviceNode);
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if (cmd.run())
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{
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qint64 blockCount = -1;
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QRegExp rxBlockCount("Count of blocks[^:]+: (\\d+)");
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if (rxBlockCount.indexIn(cmd.output()) != -1)
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blockCount = rxBlockCount.cap(1).toLongLong();
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qint64 blockSize = -1;
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QRegExp rxBlockSize("Blocksize: (\\d+)");
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if (rxBlockSize.indexIn(cmd.output()) != -1)
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blockSize = rxBlockSize.cap(1).toLongLong();
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qint64 freeBlocks = -1;
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QRegExp rxFreeBlocks("Free blocks[^:]+: (\\d+)");
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if (rxFreeBlocks.indexIn(cmd.output()) != -1)
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freeBlocks = rxFreeBlocks.cap(1).toLongLong();
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if (blockCount > -1 && blockSize > -1 && freeBlocks > -1)
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return (blockCount - freeBlocks) * blockSize;
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}
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return -1;
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}
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QString reiserfs::readLabel(const QString& deviceNode) const
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{
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ExternalCommand cmd("debugreiserfs", QStringList() << deviceNode);
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if (cmd.run())
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{
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QRegExp rxLabel("LABEL: (\\w+)");
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if (rxLabel.indexIn(cmd.output()) != -1)
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return rxLabel.cap(1).simplified();
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}
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return QString();
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}
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bool reiserfs::writeLabel(Report& report, const QString& deviceNode, const QString& newLabel)
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{
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return ExternalCommand(report, "reiserfstune", QStringList() << "-l" << newLabel << deviceNode).run(-1);
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}
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bool reiserfs::check(Report& report, const QString& deviceNode) const
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{
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ExternalCommand cmd(report, "fsck.reiserfs", QStringList() << "--fix-fixable" << "-q" << "-y" << deviceNode);
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return cmd.run(-1) && (cmd.exitCode() == 0 || cmd.exitCode() == 1 || cmd.exitCode() == 256);
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}
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bool reiserfs::create(Report& report, const QString& deviceNode) const
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{
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return ExternalCommand(report, "mkfs.reiserfs", QStringList() << "-f" << deviceNode).run(-1);
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}
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bool reiserfs::resize(Report& report, const QString& deviceNode, qint64 length) const
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{
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ExternalCommand cmd(report, "resize_reiserfs", QStringList() << deviceNode << "-q" << "-s" << QString::number(length));
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bool rval = cmd.start(-1);
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if (!rval)
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return false;
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if (cmd.write("y\n", 2) != 2)
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return false;
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return cmd.waitFor(-1) && (cmd.exitCode() == 0 || cmd.exitCode() == 256);
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}
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bool reiserfs::updateUUID(Report& report, const QString& deviceNode) const
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{
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unsigned char uuid[16];
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uuid_generate(uuid);
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char uuid_ascii[37];
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uuid_unparse(uuid, uuid_ascii);
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return ExternalCommand(report, "reiserfstune", QStringList() << "-u" << uuid_ascii << deviceNode).run(-1);
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}
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}
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