File indexing completed on 2024-05-05 05:48:46

 /*
     SPDX-FileCopyrightText: 2012-2018 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/nilfs2.h"
 
 #include "util/externalcommand.h"
 #include "util/capacity.h"
 #include "util/report.h"
 
 #include <cmath>
 
 #include <QRegularExpression>
 #include <QString>
 #include <QTemporaryDir>
 #include <QUuid>
 
 #include <KLocalizedString>
 
 namespace FS
 {
 FileSystem::CommandSupportType nilfs2::m_GetUsed = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType nilfs2::m_GetLabel = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType nilfs2::m_Create = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType nilfs2::m_Grow = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType nilfs2::m_Shrink = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType nilfs2::m_Move = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType nilfs2::m_Check = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType nilfs2::m_Copy = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType nilfs2::m_Backup = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType nilfs2::m_SetLabel = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType nilfs2::m_UpdateUUID = FileSystem::cmdSupportNone;
 FileSystem::CommandSupportType nilfs2::m_GetUUID = FileSystem::cmdSupportNone;
 
 nilfs2::nilfs2(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label, const QVariantMap& features) :
     FileSystem(firstsector, lastsector, sectorsused, label, features, FileSystem::Type::Nilfs2)
 {
 }
 
 void nilfs2::init()
 {
     m_Create = findExternal(QStringLiteral("mkfs.nilfs2")) ? cmdSupportFileSystem : cmdSupportNone;
     m_Check = /*findExternal(QStringLiteral("fsck.nilfs2")) ? cmdSupportFileSystem : */cmdSupportNone;
 
     m_GetLabel = cmdSupportCore;
     m_SetLabel = findExternal(QStringLiteral("nilfs-tune")) ? cmdSupportFileSystem : cmdSupportNone;
     m_UpdateUUID = findExternal(QStringLiteral("nilfs-tune")) ? cmdSupportFileSystem : cmdSupportNone;
 
     m_Grow = findExternal(QStringLiteral("nilfs-resize")) ? cmdSupportFileSystem : cmdSupportNone;
     m_GetUsed = findExternal(QStringLiteral("nilfs-tune")) ? cmdSupportFileSystem : cmdSupportNone;
     m_Shrink = (m_Grow != cmdSupportNone && m_GetUsed != cmdSupportNone) ? cmdSupportFileSystem : cmdSupportNone;
 
     m_Copy =/* (m_Check != cmdSupportNone) ?*/ cmdSupportCore /*: cmdSupportNone*/;
     m_Move =/* (m_Check != cmdSupportNone) ?*/ cmdSupportCore /*: cmdSupportNone*/;
 
     m_GetLabel = cmdSupportCore;
     m_Backup = cmdSupportCore;
     m_GetUUID = cmdSupportCore;
 }
 
 bool nilfs2::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 nilfs2::supportToolName() const
 {
     return SupportTool(QStringLiteral("nilfs2-utils"), QUrl(QStringLiteral("https://github.com/nilfs-dev/nilfs-utils")));
 }
 
 qint64 nilfs2::minCapacity() const
 {
     return 128 * Capacity::unitFactor(Capacity::Unit::Byte, Capacity::Unit::MiB);
 }
 
 qint64 nilfs2::maxCapacity() const
 {
     return Capacity::unitFactor(Capacity::Unit::Byte, Capacity::Unit::EiB);
 }
 
 int nilfs2::maxLabelLength() const
 {
     return 80;
 }
 
 bool nilfs2::check(Report& report, const QString& deviceNode) const
 {
     ExternalCommand cmd(report, QStringLiteral("fsck.nilfs2"), { deviceNode });
     return cmd.run(-1) && cmd.exitCode() == 0;
 }
 
 bool nilfs2::create(Report& report, const QString& deviceNode)
 {
     ExternalCommand cmd(report, QStringLiteral("mkfs.nilfs2"), { QStringLiteral("-f"), deviceNode });
     return cmd.run(-1) && cmd.exitCode() == 0;
 }
 
 qint64 nilfs2::readUsedCapacity(const QString& deviceNode) const
 {
     ExternalCommand cmd(QStringLiteral("nilfs-tune"), { QStringLiteral("-l"), deviceNode });
 
     if (cmd.run(-1) && cmd.exitCode() == 0) {
         QRegularExpression re(QStringLiteral("Block size:\\s+(\\d+)"));
         QRegularExpressionMatch reBlockSize = re.match(cmd.output());
         re.setPattern(QStringLiteral("Device size:\\s+(\\d+)"));
         QRegularExpressionMatch reDeviceSize = re.match(cmd.output());
         re.setPattern(QStringLiteral("Free blocks count:\\s+(\\d+)"));
         QRegularExpressionMatch reFreeBlocks = re.match(cmd.output());
         if (reBlockSize.hasMatch() && reDeviceSize.hasMatch() && reFreeBlocks.hasMatch())
             return reDeviceSize.captured(1).toLongLong() - reBlockSize.captured(1).toLongLong() * reFreeBlocks.captured(1).toLongLong();
     }
 
     return -1;
 }
 
 bool nilfs2::resize(Report& report, const QString& deviceNode, qint64 length) const
 {
     QTemporaryDir tempDir;
     if (!tempDir.isValid()) {
         report.line() << xi18nc("@info:progress", "Resizing NILFS2 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("--types"), QStringLiteral("nilfs2"), deviceNode, tempDir.path() });
 
     if (mountCmd.run(-1) && mountCmd.exitCode() == 0) {
         ExternalCommand resizeCmd(report, QStringLiteral("nilfs-resize"), { QStringLiteral("--verbose"), QStringLiteral("--assume-yes"), deviceNode, QString::number(length) });
 
         if (resizeCmd.run(-1) && resizeCmd.exitCode() == 0)
             rval = true;
         else
             report.line() << xi18nc("@info:progress", "Resizing NILFS2 file system on partition <filename>%1</filename> failed: NILFS2 file system resize failed.", deviceNode);
 
         ExternalCommand unmountCmd(report, QStringLiteral("umount"), { tempDir.path() });
 
         if (!unmountCmd.run(-1) && unmountCmd.exitCode() == 0)
             report.line() << xi18nc("@info:progress", "<warning>Resizing NILFS2 file system on partition <filename>%1</filename>: Unmount failed.</warning>", deviceNode);
     } else
         report.line() << xi18nc("@info:progress", "Resizing NILFS2 file system on partition <filename>%1</filename> failed: Initial mount failed.", deviceNode);
 
     return rval;
 }
 
 bool nilfs2::resizeOnline(Report& report, const QString& deviceNode, const QString&, qint64 length) const
 {
     ExternalCommand resizeCmd(report, QStringLiteral("nilfs-resize"), { QStringLiteral("--verbose"), QStringLiteral("--assume-yes"), deviceNode, QString::number(length) });
 
     if (resizeCmd.run(-1) && resizeCmd.exitCode() == 0)
         return true;
 
     report.line() << xi18nc("@info:progress", "Resizing NILFS2 file system on partition <filename>%1</filename> failed: NILFS2 file system resize failed.", deviceNode);
     return false;
 }
 
 bool nilfs2::writeLabel(Report& report, const QString& deviceNode, const QString& newLabel)
 {
     ExternalCommand cmd(report, QStringLiteral("nilfs-tune"), { QStringLiteral("-l"), newLabel, deviceNode });
     return cmd.run(-1) && cmd.exitCode() == 0;
 }
 
 bool nilfs2::updateUUID(Report& report, const QString& deviceNode) const
 {
     QUuid uuid = QUuid::createUuid();
     ExternalCommand cmd(report, QStringLiteral("nilfs-tune"), { QStringLiteral("-U"), uuid.toString(), deviceNode });
     return cmd.run(-1) && cmd.exitCode() == 0;
 }
 }