File indexing completed on 2024-05-05 05:48:45

 /*
     SPDX-FileCopyrightText: 2008-2010 Volker Lanz <vl@fidra.de>
     SPDX-FileCopyrightText: 2013-2018 Andrius Štikonas <andrius@stikonas.eu>
     SPDX-FileCopyrightText: 2020 Arnaud Ferraris <arnaud.ferraris@collabora.com>
     SPDX-FileCopyrightText: 2020 Gaël PORTAY <gael.portay@collabora.com>
 
     SPDX-License-Identifier: GPL-3.0-or-later
 */
 
 #include "fs/jfs.h"
 
 #include "util/externalcommand.h"
 #include "util/report.h"
 #include "util/capacity.h"
 
 #include <QRegularExpression>
 #include <QStringList>
 #include <QTemporaryDir>
 
 #include <KLocalizedString>
 
 namespace FS
 {
 FileSystem::CommandSupportType jfs::m_GetUsed = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType jfs::m_GetLabel = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType jfs::m_Create = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType jfs::m_Grow = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType jfs::m_Move = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType jfs::m_Check = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType jfs::m_Copy = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType jfs::m_Backup = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType jfs::m_SetLabel = FileSystem::cmdSupportNone;
 
 jfs::jfs(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label, const QVariantMap& features) :
     FileSystem(firstsector, lastsector, sectorsused, label, features, FileSystem::Type::Jfs)
 {
 }
 
 void jfs::init()
 {
     m_GetUsed = findExternal(QStringLiteral("jfs_debugfs")) ? cmdSupportFileSystem : cmdSupportNone;
     m_GetLabel = cmdSupportCore;
     m_SetLabel = findExternal(QStringLiteral("jfs_tune"), { QStringLiteral("-V") }) ? cmdSupportFileSystem : cmdSupportNone;
     m_Create = findExternal(QStringLiteral("mkfs.jfs"),{ QStringLiteral("-V") }) ? cmdSupportFileSystem : cmdSupportNone;
     m_Grow = m_Check = findExternal(QStringLiteral("fsck.jfs"), { QStringLiteral("-V") }) ? cmdSupportFileSystem : cmdSupportNone;
     m_Copy = m_Move = (m_Check != cmdSupportNone) ? cmdSupportCore : cmdSupportNone;
     m_Backup = cmdSupportCore;
 }
 
 bool jfs::supportToolFound() const
 {
     return
         m_GetUsed != cmdSupportNone &&
         m_GetLabel != cmdSupportNone &&
         m_SetLabel != cmdSupportNone &&
         m_Create != cmdSupportNone &&
         m_Check != cmdSupportNone &&
 //          m_UpdateUUID != cmdSupportNone &&
         m_Grow != cmdSupportNone &&
 //          m_Shrink != cmdSupportNone &&
         m_Copy != cmdSupportNone &&
         m_Move != cmdSupportNone &&
         m_Backup != cmdSupportNone;
 //          m_GetUUID != cmdSupportNone;
 }
 
 FileSystem::SupportTool jfs::supportToolName() const
 {
     return SupportTool(QStringLiteral("jfsutils"), QUrl(QStringLiteral("http://jfs.sourceforge.net/")));
 }
 
 qint64 jfs::minCapacity() const
 {
     return 16 * Capacity::unitFactor(Capacity::Unit::Byte, Capacity::Unit::MiB);
 }
 
 qint64 jfs::maxCapacity() const
 {
     return 16 * Capacity::unitFactor(Capacity::Unit::Byte, Capacity::Unit::TiB);
 }
 
 int jfs::maxLabelLength() const
 {
     return 11;
 }
 
 qint64 jfs::readUsedCapacity(const QString& deviceNode) const
 {
     ExternalCommand cmd(QStringLiteral("jfs_debugfs"), QStringList() << deviceNode);
 
     if (cmd.write(QByteArrayLiteral("dm")) && cmd.start()) {
         qint64 blockSize = -1;
         QRegularExpression re(QStringLiteral("Block Size: (\\d+)"));
         QRegularExpressionMatch reBlockSize = re.match(cmd.output());
 
         if (reBlockSize.hasMatch())
             blockSize = reBlockSize.captured(1).toLongLong();
 
         qint64 nBlocks = -1;
         re.setPattern(QStringLiteral("dn_mapsize:\\s+0x(\\x+)"));
         QRegularExpressionMatch renBlocks = re.match(cmd.output());
 
         bool ok = false;
         if (renBlocks.hasMatch()) {
             nBlocks = renBlocks.captured(1).toLongLong(&ok, 16);
             if (!ok)
                 nBlocks = -1;
         }
 
         qint64 nFree = -1;
         re.setPattern(QStringLiteral("dn_nfree:\\s+0x(\\x+)"));
         QRegularExpressionMatch renFree = re.match(cmd.output());
 
         if (renFree.hasMatch()) {
             nFree = renFree.captured(1).toLongLong(&ok, 16);
             if (!ok)
                 nFree = -1;
         }
 
         if (nBlocks > -1 && blockSize > -1 && nFree > -1)
             return (nBlocks - nFree) * blockSize;
     }
 
     return -1;
 }
 
 bool jfs::writeLabel(Report& report, const QString& deviceNode, const QString& newLabel)
 {
     ExternalCommand cmd(report, QStringLiteral("jfs_tune"), { QStringLiteral("-L"), newLabel, deviceNode });
     return cmd.run(-1) && cmd.exitCode() == 0;
 }
 
 bool jfs::writeLabelOnline(Report& report, const QString& deviceNode, const QString& mountPoint, const QString& newLabel)
 {
     Q_UNUSED(mountPoint)
     return writeLabel(report, deviceNode, newLabel);
 }
 
 bool jfs::check(Report& report, const QString& deviceNode) const
 {
     ExternalCommand cmd(report, QStringLiteral("fsck.jfs"), { QStringLiteral("-f"), deviceNode });
     return cmd.run(-1) && (cmd.exitCode() == 0 || cmd.exitCode() == 1);
 }
 
 bool jfs::create(Report& report, const QString& deviceNode)
 {
     ExternalCommand cmd(report, QStringLiteral("mkfs.jfs"), { QStringLiteral("-q"), deviceNode });
     return cmd.run(-1) && cmd.exitCode() == 0;
 }
 
 bool jfs::resize(Report& report, const QString& deviceNode, qint64) const
 {
     QTemporaryDir tempDir;
     if (!tempDir.isValid()) {
         report.line() << xi18nc("@info:progress", "Resizing JFS file system on partition <filename>%1</filename> failed: Could not create temp dir.", deviceNode);
         return false;
     }
 
     bool rval = false;
 
     ExternalCommand mountCmd(report, QStringLiteral("mount"), { QStringLiteral("--verbose"), QStringLiteral("--type"), QStringLiteral("jfs"), deviceNode, tempDir.path() });
 
     if (mountCmd.run(-1)) {
         ExternalCommand resizeMountCmd(report, QStringLiteral("mount"), { QStringLiteral("--verbose"), QStringLiteral("--type"), QStringLiteral("jfs"), QStringLiteral("--options"), QStringLiteral("remount,resize"), deviceNode, tempDir.path() });
 
         if (resizeMountCmd.run(-1)  && resizeMountCmd.exitCode() == 0)
             rval = true;
         else
             report.line() << xi18nc("@info:progress", "Resizing JFS file system on partition <filename>%1</filename> failed: Remount failed.", deviceNode);
 
         ExternalCommand unmountCmd(report, QStringLiteral("umount"), { tempDir.path() });
 
         if (!unmountCmd.run(-1))
             report.line() << xi18nc("@info:progress", "<warning>Resizing JFS file system on partition <filename>%1</filename>: Unmount failed.</warning>", deviceNode);
     } else
         report.line() << xi18nc("@info:progress", "Resizing JFS file system on partition <filename>%1</filename> failed: Initial mount failed.", deviceNode);
 
     return rval;
 }
 bool jfs::resizeOnline(Report& report, const QString& deviceNode, const QString& mountPoint, qint64) const
 {
 
     ExternalCommand resizeMountCmd(report, QStringLiteral("mount"), { QStringLiteral("--verbose"), QStringLiteral("--type"), QStringLiteral("jfs"), QStringLiteral("--options"), QStringLiteral("remount,resize"), deviceNode, mountPoint });
 
     if (resizeMountCmd.run(-1) && resizeMountCmd.exitCode() == 0)
         return true;
 
     report.line() << xi18nc("@info:progress", "Resizing JFS file system on partition <filename>%1</filename> failed: Remount failed.", deviceNode);
     return false;
 }
 }