162 lines
4.1 KiB
C++
162 lines
4.1 KiB
C++
/* === This file is part of Calamares - <https://calamares.io> ===
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*
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* SPDX-FileCopyrightText: 2014 Teo Mrnjavac <teo@kde.org>
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* SPDX-FileCopyrightText: 2017-2019 Adriaan de Groot <groot@kde.org>
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* SPDX-License-Identifier: GPL-3.0-or-later
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*
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* Calamares is Free Software: see the License-Identifier above.
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*
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*
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*/
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#include "Mount.h"
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#include "partition/Sync.h"
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#include "utils/CalamaresUtilsSystem.h"
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#include "utils/Logger.h"
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#include "utils/String.h"
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#include <QDir>
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#include <QTemporaryDir>
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namespace CalamaresUtils
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{
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namespace Partition
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{
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int
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mount( const QString& devicePath, const QString& mountPoint, const QString& filesystemName, const QString& options )
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{
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if ( devicePath.isEmpty() || mountPoint.isEmpty() )
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{
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if ( devicePath.isEmpty() )
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{
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cWarning() << "Can't mount an empty device.";
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}
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if ( mountPoint.isEmpty() )
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{
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cWarning() << "Can't mount on an empty mountpoint.";
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}
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return static_cast< int >( ProcessResult::Code::NoWorkingDirectory );
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}
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QDir mountPointDir( mountPoint );
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if ( !mountPointDir.exists() )
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{
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bool ok = mountPointDir.mkpath( mountPoint );
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if ( !ok )
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{
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cWarning() << "Could not create mountpoint" << mountPoint;
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return static_cast< int >( ProcessResult::Code::NoWorkingDirectory );
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}
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}
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QStringList args = { "mount" };
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if ( !filesystemName.isEmpty() )
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{
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args << "-t" << filesystemName;
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}
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if ( !options.isEmpty() )
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{
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if ( options.startsWith( '-' ) )
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{
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args << options;
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}
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else
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{
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args << "-o" << options;
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}
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}
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args << devicePath << mountPoint;
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auto r = CalamaresUtils::System::runCommand( args, std::chrono::seconds( 10 ) );
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sync();
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return r.getExitCode();
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}
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int
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unmount( const QString& path, const QStringList& options )
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{
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auto r
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= CalamaresUtils::System::runCommand( QStringList { "umount" } << options << path, std::chrono::seconds( 10 ) );
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sync();
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return r.getExitCode();
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}
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struct TemporaryMount::Private
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{
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QString m_devicePath;
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QTemporaryDir m_mountDir;
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};
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TemporaryMount::TemporaryMount( const QString& devicePath, const QString& filesystemName, const QString& options )
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: m_d( std::make_unique< Private >() )
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{
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m_d->m_devicePath = devicePath;
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m_d->m_mountDir.setAutoRemove( false );
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int r = mount( devicePath, m_d->m_mountDir.path(), filesystemName, options );
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if ( r )
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{
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cWarning() << "Mount of" << devicePath << "on" << m_d->m_mountDir.path() << "failed, code" << r;
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m_d.reset();
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}
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}
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TemporaryMount::~TemporaryMount()
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{
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if ( m_d )
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{
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int r = unmount( m_d->m_mountDir.path(), { "-R" } );
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if ( r )
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{
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cWarning() << "UnMount of temporary" << m_d->m_devicePath << "on" << m_d->m_mountDir.path()
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<< "failed, code" << r;
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}
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}
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}
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QString
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TemporaryMount::path() const
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{
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return m_d ? m_d->m_mountDir.path() : QString();
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}
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QList< MtabInfo >
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MtabInfo::fromMtabFilteredByPrefix( const QString& mountPrefix, const QString& mtabPath )
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{
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QFile f( mtabPath.isEmpty() ? "/etc/mtab" : mtabPath );
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if ( !f.open( QIODevice::ReadOnly | QIODevice::Text ) )
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{
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return {};
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}
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QList< MtabInfo > l;
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// After opening, atEnd() is already true (!?) so try reading at least once
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do
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{
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QString line = f.readLine();
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if ( line.isEmpty() || line.startsWith( '#' ) )
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{
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continue;
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}
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QStringList parts = line.split( ' ', SplitSkipEmptyParts );
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if ( parts.length() >= 3 && !parts[ 0 ].startsWith( '#' ) )
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{
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// Lines have format: <device> <mountpoint> <fstype> <options>..., so check
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// the mountpoint field. Everything starts with an empty string.
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if ( parts[ 1 ].startsWith( mountPrefix ) )
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{
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l.append( { parts[ 0 ], parts[ 1 ] } );
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}
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}
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} while ( !f.atEnd() );
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return l;
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}
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} // namespace Partition
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} // namespace CalamaresUtils
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