170 lines
6.0 KiB
C++
170 lines
6.0 KiB
C++
/***************************************************************************
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* Copyright (C) 2008 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/jfs.h"
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#include "util/externalcommand.h"
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#include "util/report.h"
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#include "util/capacity.h"
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#include <QStringList>
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#include <QRegExp>
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#include <klocale.h>
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#include <ktempdir.h>
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#include <unistd.h>
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namespace FS
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{
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FileSystem::SupportType jfs::m_GetUsed = FileSystem::SupportNone;
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FileSystem::SupportType jfs::m_GetLabel = FileSystem::SupportNone;
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FileSystem::SupportType jfs::m_Create = FileSystem::SupportNone;
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FileSystem::SupportType jfs::m_Grow = FileSystem::SupportNone;
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FileSystem::SupportType jfs::m_Move = FileSystem::SupportNone;
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FileSystem::SupportType jfs::m_Check = FileSystem::SupportNone;
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FileSystem::SupportType jfs::m_Copy = FileSystem::SupportNone;
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FileSystem::SupportType jfs::m_Backup = FileSystem::SupportNone;
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FileSystem::SupportType jfs::m_SetLabel = FileSystem::SupportNone;
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jfs::jfs(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label) :
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FileSystem(firstsector, lastsector, sectorsused, label, FileSystem::Jfs)
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{
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}
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void jfs::init()
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{
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m_GetUsed = findExternal("jfs_debugfs") ? SupportExternal : SupportNone;
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m_SetLabel = m_GetLabel = findExternal("jfs_tune", QStringList() << "-V") ? SupportExternal : SupportNone;
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m_Create = findExternal("mkfs.jfs", QStringList() << "-V") ? SupportExternal : SupportNone;
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m_Grow = m_Check = findExternal("fsck.jfs", QStringList() << "-V") ? SupportExternal : SupportNone;
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m_Copy = m_Move = (m_Check != SupportNone) ? SupportInternal : SupportNone;
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m_Backup = SupportInternal;
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}
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qint64 jfs::minCapacity() const
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{
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return 16 * Capacity::unitFactor(Capacity::Byte, Capacity::MiB);
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}
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qint64 jfs::readUsedCapacity(const QString& deviceNode) const
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{
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ExternalCommand cmd("jfs_debugfs", QStringList() << deviceNode);
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if (cmd.start() && cmd.write("dm") == 2 && cmd.waitFor())
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{
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qint64 blockSize = -1;
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QRegExp rxBlockSize("Block Size: (\\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 nBlocks = -1;
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QRegExp rxnBlocks("dn_mapsize:\\s+0x([0-9a-f]+)");
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bool ok = false;
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if (rxnBlocks.indexIn(cmd.output()) != -1)
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{
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nBlocks = rxnBlocks.cap(1).toLongLong(&ok, 16);
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if (!ok)
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nBlocks = -1;
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}
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qint64 nFree = -1;
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QRegExp rxnFree("dn_nfree:\\s+0x([0-9a-f]+)");
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if (rxnFree.indexIn(cmd.output()) != -1)
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{
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nFree = rxnFree.cap(1).toLongLong(&ok, 16);
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if (!ok)
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nFree = -1;
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}
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if (nBlocks > -1 && blockSize > -1 && nFree > -1)
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return (nBlocks - nFree) * blockSize;
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}
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return -1;
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}
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QString jfs::readLabel(const QString& deviceNode) const
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{
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ExternalCommand cmd("jfs_tune", QStringList() << "-l" << deviceNode);
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if (cmd.run())
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{
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QRegExp rxLabel("Volume label:\\s+'(\\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 jfs::writeLabel(Report& report, const QString& deviceNode, const QString& newLabel)
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{
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return ExternalCommand(report, "jfs_tune", QStringList() << "-L" << newLabel << deviceNode).run(-1);
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}
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bool jfs::check(Report& report, const QString& deviceNode) const
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{
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ExternalCommand cmd(report, "fsck.jfs", QStringList() << "-f" << deviceNode);
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return cmd.run(-1) && (cmd.exitCode() == 0 || cmd.exitCode() == 1);
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}
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bool jfs::create(Report& report, const QString& deviceNode) const
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{
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return ExternalCommand(report, "mkfs.jfs", QStringList() << "-q" << deviceNode).run(-1);
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}
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bool jfs::resize(Report& report, const QString& deviceNode, qint64) const
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{
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KTempDir tempDir;
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if (!tempDir.exists())
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{
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report.line() << i18nc("@info/plain", "Resizing JFS 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, "mount", QStringList() << "-v" << "-t" << "jfs" << deviceNode << tempDir.name());
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if (mountCmd.run(-1))
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{
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ExternalCommand resizeMountCmd(report, "mount", QStringList() << "-v" << "-t" << "jfs" << "-o" << "remount,resize" << deviceNode << tempDir.name());
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if (resizeMountCmd.run(-1))
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rval = true;
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else
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report.line() << i18nc("@info/plain", "Resizing JFS file system on partition <filename>%1</filename> failed: Remount failed.", deviceNode);
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ExternalCommand unmountCmd(report, "umount", QStringList() << tempDir.name());
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if (!unmountCmd.run(-1))
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report.line() << i18nc("@info/plain", "Warning: Resizing JFS file system on partition <filename>%1</filename>: Unmount failed.", deviceNode);
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}
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else
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report.line() << i18nc("@info/plain", "Resizing JFS 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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}
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