117 lines
3.9 KiB
C++
117 lines
3.9 KiB
C++
/*************************************************************************
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* Copyright (C) 2008 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 "core/device.h"
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#include "core/partitiontable.h"
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#include "core/smartstatus.h"
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#include "util/capacity.h"
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#include <KLocalizedString>
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#include <QFile>
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#include <QByteArray>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <linux/fs.h>
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#if !defined(BLKPBSZGET)
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#define BLKPBSZGET _IO(0x12,123)/* get block physical sector size */
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#endif
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static qint32 getPhysicalSectorSize(const QString& device_node)
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{
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/*
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* possible ways of getting the physical sector size for a drive:
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* - ioctl(BLKPBSZGET) -- supported with Linux 2.6.32 and later
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* - /sys/block/sda/queue/physical_block_size
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* - libblkid from util-linux-ng 2.17 or later
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* TODO: implement the blkid method
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*/
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#if defined(BLKPBSZGET)
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int phSectorSize = -1;
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int fd = open(device_node.toLocal8Bit().constData(), O_RDONLY);
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if (fd != -1) {
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if (ioctl(fd, BLKPBSZGET, &phSectorSize) >= 0) {
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close(fd);
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return phSectorSize;
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}
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close(fd);
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}
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#endif
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QFile f(QStringLiteral("/sys/block/%1/queue/physical_block_size").arg(QString(device_node).remove(QStringLiteral("/dev/"))));
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if (f.open(QIODevice::ReadOnly)) {
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QByteArray a = f.readLine();
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return a.simplified().toInt();
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}
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return -1;
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}
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/** Constructs a Device with an empty PartitionTable.
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@param name the Device's name, usually some string defined by the manufacturer
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@param devicenode the Device's node, for example "/dev/sda"
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@param heads the number of heads in CHS notation
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@param numSectors the number of sectors in CHS notation
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@param cylinders the number of cylinders in CHS notation
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@param sectorSize the size of a sector in bytes
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*/
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Device::Device(const QString& name, const QString& devicenode, qint32 heads, qint32 numSectors, qint32 cylinders, qint64 sectorSize, const QString& iconname) :
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QObject(),
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m_Name(name.length() > 0 ? name : i18n("Unknown Device")),
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m_DeviceNode(devicenode),
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m_PartitionTable(nullptr),
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m_Heads(heads),
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m_SectorsPerTrack(numSectors),
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m_Cylinders(cylinders),
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m_LogicalSectorSize(sectorSize),
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m_PhysicalSectorSize(getPhysicalSectorSize(devicenode)),
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m_IconName(iconname.isEmpty() ? QStringLiteral("drive-harddisk") : iconname),
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m_SmartStatus(new SmartStatus(devicenode))
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{
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}
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/** Destructs a Device. */
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Device::~Device()
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{
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delete m_PartitionTable;
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}
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bool Device::operator==(const Device& other) const
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{
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return m_DeviceNode == other.m_DeviceNode;
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}
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bool Device::operator!=(const Device& other) const
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{
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return !(other == *this);
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}
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QString Device::prettyName() const
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{
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return QStringLiteral("%1 (%2, %3)").arg(deviceNode()).arg(name()).arg(Capacity::formatByteSize(this->capacity()));
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}
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