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Viewing changes to src/fs/reiserfs.cpp

  • Committer: Bazaar Package Importer
  • Author(s): Anthony Mercatante
  • Date: 2009-01-23 17:57:36 UTC
  • Revision ID: james.westby@ubuntu.com-20090123175736-2ltrhgg3m55dokbm
Tags: upstream-1.0.0~beta1a
Import upstream version 1.0.0~beta1a

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src/fs/reiserfs.cpp
 
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/***************************************************************************
 
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 *   Copyright (C) 2008 by Volker Lanz <vl@fidra.de>                       *
 
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 *                                                                         *
 
4
 *   This program is free software; you can redistribute it and/or modify  *
 
5
 *   it under the terms of the GNU General Public License as published by  *
 
6
 *   the Free Software Foundation; either version 2 of the License, or     *
 
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 *   (at your option) any later version.                                   *
 
8
 *                                                                         *
 
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 *   This program is distributed in the hope that it will be useful,       *
 
10
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 
11
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 
12
 *   GNU General Public License for more details.                          *
 
13
 *                                                                         *
 
14
 *   You should have received a copy of the GNU General Public License     *
 
15
 *   along with this program; if not, write to the                         *
 
16
 *   Free Software Foundation, Inc.,                                       *
 
17
 *   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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        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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        }
 
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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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}