395 lines
11 KiB
C++
395 lines
11 KiB
C++
/*************************************************************************
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* Copyright (C) 2012 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 *
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* modify it under the terms of the GNU General Public License as *
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* published by the Free Software Foundation; either version 3 of *
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* the License, or (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, see <http://www.gnu.org/licenses/>.*
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*************************************************************************/
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#include "fs/filesystem.h"
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#include "util/externalcommand.h"
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#include "util/capacity.h"
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#include <blkid/blkid.h>
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#include <KLocalizedString>
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/** Creates a new FileSystem object
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@param firstsector the first sector used by this FileSystem on the Device
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@param lastsector the last sector used by this FileSystem on the Device
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@param sectorsused the number of sectors in use on the FileSystem
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@param l the FileSystem label
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@param t the FileSystem type
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*/
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FileSystem::FileSystem(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& l, FileSystem::Type t) :
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m_Type(t),
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m_FirstSector(firstsector),
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m_LastSector(lastsector),
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m_SectorsUsed(sectorsused),
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m_Label(l),
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m_UUID()
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{
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}
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/** Reads the capacity in use on this FileSystem
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@param deviceNode the device node for the Partition the FileSystem is on
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@return the used capacity in bytes or -1 in case of an error
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*/
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qint64 FileSystem::readUsedCapacity(const QString& deviceNode) const
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{
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Q_UNUSED(deviceNode);
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return -1;
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}
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static QString readBlkIdValue(const QString& deviceNode, const QString& tag)
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{
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blkid_cache cache;
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QString rval;
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if (blkid_get_cache(&cache, NULL) == 0)
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{
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blkid_dev dev;
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char* label = NULL;
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if ((dev = blkid_get_dev(cache, deviceNode.toLocal8Bit().constData(), BLKID_DEV_NORMAL)) != NULL &&
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(label = blkid_get_tag_value(cache, tag.toLocal8Bit().constData(), deviceNode.toLocal8Bit().constData())))
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{
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rval = QString::fromUtf8(label);
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free(label);
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}
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blkid_put_cache(cache);
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}
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return rval;
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}
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/** Reads the label for this FileSystem
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@param deviceNode the device node for the Partition the FileSystem is on
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@return the FileSystem label or an empty string in case of error
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*/
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QString FileSystem::readLabel(const QString& deviceNode) const
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{
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return readBlkIdValue(deviceNode, QStringLiteral("LABEL"));
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}
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/** Creates a new FileSystem
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@param report Report to write status information to
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@param deviceNode the device node for the Partition to create the FileSystem on
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@return true if successful
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*/
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bool FileSystem::create(Report& report, const QString& deviceNode) const
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{
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Q_UNUSED(report);
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Q_UNUSED(deviceNode);
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return true;
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}
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/** Resized a FileSystem to a given new length
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@param report Report to write status information to
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@param deviceNode the device node for the Partition the FileSystem is on
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@param newLength the new length for the FileSystem in bytes
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@return true on success
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*/
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bool FileSystem::resize(Report& report, const QString& deviceNode, qint64 newLength) const
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{
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Q_UNUSED(report);
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Q_UNUSED(deviceNode);
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Q_UNUSED(newLength);
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return true;
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}
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/** Move a FileSystem to a new start sector
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@param report Report to write status information to
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@param deviceNode the device node for the Partition the FileSystem is on
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@param newLength the new start sector for the FileSystem
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@return true on success
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*/
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bool FileSystem::move(Report& report, const QString& deviceNode, qint64 newStartSector) const
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{
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Q_UNUSED(report);
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Q_UNUSED(deviceNode);
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Q_UNUSED(newStartSector);
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return true;
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}
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/** Writes a label for the FileSystem to disk
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@param report Report to write status information to
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@param deviceNode the device node for the Partition the FileSystem is on
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@param newLabel the new label for the FileSystem
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@return true on success
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*/
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bool FileSystem::writeLabel(Report& report, const QString& deviceNode, const QString& newLabel)
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{
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Q_UNUSED(report);
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Q_UNUSED(deviceNode);
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Q_UNUSED(newLabel);
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return true;
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}
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/** Copies a FileSystem from one Partition to another
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@param report Report to write status information to
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@param targetDeviceNode device node of the target Partition
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@param sourceDeviceNode device node of the source Partition
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@return true on success
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*/
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bool FileSystem::copy(Report& report, const QString& targetDeviceNode, const QString& sourceDeviceNode) const
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{
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Q_UNUSED(report);
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Q_UNUSED(targetDeviceNode);
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Q_UNUSED(sourceDeviceNode);
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return true;
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}
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/** Backs up a FileSystem to a file
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@param report Report to write status information to
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@param sourceDevice Device the source FileSystem is on
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@param deviceNode device node of the source Partition
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@param filename name of the file to backup to
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@return true on success
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*/
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bool FileSystem::backup(Report& report, const Device& sourceDevice, const QString& deviceNode, const QString& filename) const
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{
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Q_UNUSED(report);
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Q_UNUSED(sourceDevice);
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Q_UNUSED(deviceNode);
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Q_UNUSED(filename);
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return false;
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}
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/** Removes a FileSystem
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@param report Report to write status information to
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@param deviceNode the device node for the Partition the FileSystem is on
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@return true if FileSystem is removed
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*/
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bool FileSystem::remove(Report& report, const QString& deviceNode) const
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{
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Q_UNUSED(report);
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Q_UNUSED(deviceNode);
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return true;
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}
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/** Checks a FileSystem for errors
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@param report Report to write status information to
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@param deviceNode the device node for the Partition the FileSystem is on
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@return true if FileSystem is error-free
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*/
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bool FileSystem::check(Report& report, const QString& deviceNode) const
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{
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Q_UNUSED(report);
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Q_UNUSED(deviceNode);
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return true;
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}
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/** Updates a FileSystem UUID on disk
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@param report Report to write status information to
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@param deviceNode the device node for the Partition the FileSystem is on
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@return true on success
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*/
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bool FileSystem::updateUUID(Report& report, const QString& deviceNode) const
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{
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Q_UNUSED(report);
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Q_UNUSED(deviceNode);
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return true;
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}
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/** Returns the FileSystem UUID by calling a FileSystem-specific helper program
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@param deviceNode the device node for the Partition the FileSystem is on
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@return the UUID or an empty string if the FileSystem does not support UUIDs
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*/
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QString FileSystem::readUUID(const QString& deviceNode) const
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{
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return readBlkIdValue(deviceNode, QStringLiteral("UUID"));
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}
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/** Give implementations of FileSystem a chance to update the boot sector after the
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file system has been moved or copied.
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@param report Report to write status information to
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@param deviceNode the device node for the Partition the FileSystem is on
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@return true on success
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*/
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bool FileSystem::updateBootSector(Report& report, const QString& deviceNode) const
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{
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Q_UNUSED(report);
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Q_UNUSED(deviceNode);
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return true;
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}
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/** @return the minimum capacity valid for this FileSystem in bytes */
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qint64 FileSystem::minCapacity() const
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{
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return 8 * Capacity::unitFactor(Capacity::Byte, Capacity::MiB);
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}
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/** @return the maximum capacity valid for this FileSystem in bytes */
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qint64 FileSystem::maxCapacity() const
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{
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return Capacity::unitFactor(Capacity::Byte, Capacity::EiB);
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}
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/** @return the maximum label length valid for this FileSystem */
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qint64 FileSystem::maxLabelLength() const
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{
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return 16;
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}
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/** @return this FileSystem's type as printable name */
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QString FileSystem::name() const
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{
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return nameForType(type());
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}
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/** @return a pointer to a QString C array with all FileSystem names */
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static const QString* typeNames()
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{
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static const QString s[] =
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{
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i18nc("@item filesystem name", "unknown"),
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i18nc("@item filesystem name", "extended"),
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i18nc("@item filesystem name", "ext2"),
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i18nc("@item filesystem name", "ext3"),
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i18nc("@item filesystem name", "ext4"),
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i18nc("@item filesystem name", "linuxswap"),
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i18nc("@item filesystem name", "fat16"),
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i18nc("@item filesystem name", "fat32"),
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i18nc("@item filesystem name", "ntfs"),
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i18nc("@item filesystem name", "reiser"),
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i18nc("@item filesystem name", "reiser4"),
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i18nc("@item filesystem name", "xfs"),
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i18nc("@item filesystem name", "jfs"),
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i18nc("@item filesystem name", "hfs"),
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i18nc("@item filesystem name", "hfsplus"),
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i18nc("@item filesystem name", "ufs"),
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i18nc("@item filesystem name", "unformatted"),
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i18nc("@item filesystem name", "btrfs"),
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i18nc("@item filesystem name", "hpfs"),
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i18nc("@item filesystem name", "luks"),
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i18nc("@item filesystem name", "ocfs2"),
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i18nc("@item filesystem name", "zfs"),
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i18nc("@item filesystem name", "exfat"),
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i18nc("@item filesystem name", "nilfs2"),
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i18nc("@item filesystem name", "lvm2 pv"),
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};
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return s;
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}
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/** @param t the type to get the name for
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@return the printable name for the given type
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*/
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QString FileSystem::nameForType(FileSystem::Type t)
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{
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Q_ASSERT(t >= 0);
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Q_ASSERT(t < __lastType);
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return typeNames()[t];
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}
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/** @param s the name to get the type for
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@return the type for the name or FileSystem::Unknown if not found
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*/
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FileSystem::Type FileSystem::typeForName(const QString& s)
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{
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for (quint32 i = 0; i < __lastType; i++)
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if (typeNames()[i] == s)
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return static_cast<FileSystem::Type>(i);
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return Unknown;
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}
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/** @return a QList of all known types */
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QList<FileSystem::Type> FileSystem::types()
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{
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QList<FileSystem::Type> result;
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int i = Ext2; // first "real" filesystem
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while (i != __lastType)
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result.append(static_cast<FileSystem::Type>(i++));
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return result;
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}
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/** @return printable menu title for mounting this FileSystem */
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QString FileSystem::mountTitle() const
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{
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return i18nc("@title:menu", "Mount");
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}
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/** @return printable menu title for unmounting this FileSystem */
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QString FileSystem::unmountTitle() const
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{
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return i18nc("@title:menu", "Unmount");
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}
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/** Moves a FileSystem to a new start sector.
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@param newStartSector where the FileSystem should be moved to
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*/
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void FileSystem::move(qint64 newStartSector)
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{
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const qint64 savedLength = length();
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setFirstSector(newStartSector);
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setLastSector(newStartSector + savedLength - 1);
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}
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/** Attempt to mount this FileSystem on a given mount point
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@param mountPoint the mount point to mount the FileSystem on
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@return true on success
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*/
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bool FileSystem::mount(const QString& mountPoint)
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{
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Q_UNUSED(mountPoint);
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return false;
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}
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/** Attempt to unmount this FileSystem
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@param mountPoint the mount point the FileSystem is mounted on
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@return true on success
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*/
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bool FileSystem::unmount(const QString& mountPoint)
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{
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Q_UNUSED(mountPoint);
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return false;
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}
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bool FileSystem::findExternal(const QString& cmdName, const QStringList& args, int expectedCode)
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{
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ExternalCommand cmd(cmdName, args);
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if (!cmd.run())
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return false;
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return cmd.exitCode() == 0 || cmd.exitCode() == expectedCode;
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}
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bool FileSystem::supportToolFound() const
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{
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return false;
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}
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FileSystem::SupportTool FileSystem::supportToolName() const
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{
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return SupportTool();
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}
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