File indexing completed on 2024-05-05 05:48:47

 /*
     SPDX-FileCopyrightText: 2008-2010 Volker Lanz <vl@fidra.de>
     SPDX-FileCopyrightText: 2013-2018 Andrius Štikonas <andrius@stikonas.eu>
     SPDX-FileCopyrightText: 2019 Yuri Chornoivan <yurchor@ukr.net>
     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/reiserfs.h"
 
 #include "util/externalcommand.h"
 #include "util/capacity.h"
 
 #include <QRegularExpression>
 #include <QString>
 #include <QStringList>
 #include <QUuid>
 
 namespace FS
 {
 FileSystem::CommandSupportType reiserfs::m_GetUsed = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType reiserfs::m_GetLabel = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType reiserfs::m_Create = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType reiserfs::m_Grow = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType reiserfs::m_Shrink = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType reiserfs::m_Move = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType reiserfs::m_Check = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType reiserfs::m_Copy = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType reiserfs::m_Backup = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType reiserfs::m_SetLabel = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType reiserfs::m_UpdateUUID = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType reiserfs::m_GetUUID = FileSystem::cmdSupportNone;
 
 reiserfs::reiserfs(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label, const QVariantMap& features) :
     FileSystem(firstsector, lastsector, sectorsused, label, features, FileSystem::Type::ReiserFS)
 {
 }
 
 void reiserfs::init()
 {
     m_GetLabel = cmdSupportCore;
     m_GetUsed = findExternal(QStringLiteral("debugreiserfs"), {}, 16) ? cmdSupportFileSystem : cmdSupportNone;
     m_SetLabel = findExternal(QStringLiteral("reiserfstune")) ? cmdSupportFileSystem : cmdSupportNone;
     m_Create = findExternal(QStringLiteral("mkfs.reiserfs")) ? cmdSupportFileSystem : cmdSupportNone;
     m_Check = findExternal(QStringLiteral("fsck.reiserfs")) ? cmdSupportFileSystem : cmdSupportNone;
     m_Move = m_Copy = (m_Check != cmdSupportNone) ? cmdSupportCore : cmdSupportNone;
     m_Grow = findExternal(QStringLiteral("resize_reiserfs"), {}, 16) ? cmdSupportFileSystem : cmdSupportNone;
     m_Shrink = (m_GetUsed != cmdSupportNone && m_Grow != cmdSupportNone) ? cmdSupportFileSystem : cmdSupportNone;
     m_Backup = cmdSupportCore;
     m_UpdateUUID = findExternal(QStringLiteral("reiserfstune")) ? cmdSupportFileSystem : cmdSupportNone;
     m_GetUUID = cmdSupportCore;
 }
 
 bool reiserfs::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 reiserfs::supportToolName() const
 {
     return SupportTool(QStringLiteral("reiserfsprogs"), QUrl(QStringLiteral("https://reiser4.wiki.kernel.org/index.php/Reiserfsprogs")));
 }
 
 qint64 reiserfs::minCapacity() const
 {
     return 32 * Capacity::unitFactor(Capacity::Unit::Byte, Capacity::Unit::MiB);
 }
 
 qint64 reiserfs::maxCapacity() const
 {
     return 16 * Capacity::unitFactor(Capacity::Unit::Byte, Capacity::Unit::TiB) - Capacity::unitFactor(Capacity::Unit::Byte, Capacity::Unit::MiB);
 }
 
 int reiserfs::maxLabelLength() const
 {
     return 16;
 }
 
 qint64 reiserfs::readUsedCapacity(const QString& deviceNode) const
 {
     ExternalCommand cmd(QStringLiteral("debugreiserfs"), { deviceNode });
 
     if (cmd.run(-1) && cmd.exitCode() == 16) {
         qint64 blockCount = -1;
         QRegularExpression re(QStringLiteral("Count of blocks[^:]+: (\\d+)"));
         QRegularExpressionMatch reBlockCount = re.match(cmd.output());
 
         if (reBlockCount.hasMatch())
             blockCount = reBlockCount.captured(1).toLongLong();
 
         qint64 blockSize = -1;
         re.setPattern(QStringLiteral("Blocksize: (\\d+)"));
         QRegularExpressionMatch reBlockSize = re.match(cmd.output());
 
         if (reBlockSize.hasMatch())
             blockSize = reBlockSize.captured(1).toLongLong();
 
         qint64 freeBlocks = -1;
         re.setPattern(QStringLiteral("Free blocks[^:]+: (\\d+)"));
         QRegularExpressionMatch reFreeBlocks = re.match(cmd.output());
 
         if (reFreeBlocks.hasMatch())
             freeBlocks = reFreeBlocks.captured(1).toLongLong();
 
         if (blockCount > -1 && blockSize > -1 && freeBlocks > -1)
             return (blockCount - freeBlocks) * blockSize;
     }
 
     return -1;
 }
 
 bool reiserfs::writeLabel(Report& report, const QString& deviceNode, const QString& newLabel)
 {
     ExternalCommand cmd(report, QStringLiteral("reiserfstune"), { QStringLiteral("--label"), newLabel, deviceNode });
     return cmd.run(-1) && cmd.exitCode() == 0;
 }
 
 bool reiserfs::check(Report& report, const QString& deviceNode) const
 {
     ExternalCommand cmd(report, QStringLiteral("fsck.reiserfs"), { QStringLiteral("--fix-fixable"), QStringLiteral("--quiet"), QStringLiteral("--yes"), deviceNode });
     return cmd.run(-1) && (cmd.exitCode() == 0 || cmd.exitCode() == 1 || cmd.exitCode() == 256);
 }
 
 bool reiserfs::create(Report& report, const QString& deviceNode)
 {
     ExternalCommand cmd(report, QStringLiteral("mkfs.reiserfs"), { QStringLiteral("-f"), deviceNode });
     return cmd.run(-1) && cmd.exitCode() == 0;
 }
 
 bool reiserfs::resize(Report& report, const QString& deviceNode, qint64 length) const
 {
     ExternalCommand cmd(report, QStringLiteral("resize_reiserfs"),
                         { deviceNode, QStringLiteral("-q"), QStringLiteral("-s"), QString::number(length) });
 
     bool rval = cmd.write(QByteArrayLiteral("y\n"));
 
     if (!rval)
         return false;
 
     if (!cmd.start(-1))
         return false;
 
     return cmd.exitCode() == 0 || cmd.exitCode() == 256;
 }
 
 bool reiserfs::resizeOnline(Report& report, const QString& deviceNode, const QString&, qint64 length) const
 {
     return resize(report, deviceNode, length);
 }
 
 bool reiserfs::updateUUID(Report& report, const QString& deviceNode) const
 {
     const QString uuid = QUuid::createUuid().toString().remove(QRegularExpression(QStringLiteral("\\{|\\}")));
     ExternalCommand cmd(report, QStringLiteral("reiserfstune"), { QStringLiteral("--uuid"), uuid, deviceNode });
     return cmd.run(-1) && cmd.exitCode() == 0;
 }
 }