136 lines
3.7 KiB
C++
136 lines
3.7 KiB
C++
/*
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SPDX-FileCopyrightText: 2008-2010 Volker Lanz <vl@fidra.de>
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SPDX-FileCopyrightText: 2012-2018 Andrius Štikonas <andrius@stikonas.eu>
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SPDX-FileCopyrightText: 2015 Teo Mrnjavac <teo@kde.org>
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SPDX-FileCopyrightText: 2016 Chantara Tith <tith.chantara@gmail.com>
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SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#include "core/diskdevice.h"
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#include "core/device_p.h"
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#include "core/partitiontable.h"
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#include "core/smartstatus.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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#ifdef __gnu_linux__
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#include <linux/fs.h>
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#endif
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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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#define d_ptr std::static_pointer_cast<DiskDevicePrivate>(d)
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class DiskDevicePrivate : public DevicePrivate
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{
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public:
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qint32 m_Heads;
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qint32 m_SectorsPerTrack;
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qint32 m_Cylinders;
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qint64 m_LogicalSectorSize;
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qint64 m_PhysicalSectorSize;
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};
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static qint64 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 2.17 or later (not implemented)
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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.trimmed().toInt();
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}
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return -1;
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}
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/** Constructs a Disk 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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DiskDevice::DiskDevice(const QString& name,
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const QString& deviceNode,
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qint32 heads,
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qint32 numSectors,
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qint32 cylinders,
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qint64 sectorSize,
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const QString& iconName)
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: Device(std::make_shared<DiskDevicePrivate>(), name, deviceNode, sectorSize, (static_cast<qint64>(heads) * cylinders * numSectors), iconName, Device::Type::Disk_Device)
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{
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d_ptr->m_Heads = heads;
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d_ptr->m_SectorsPerTrack = numSectors;
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d_ptr->m_Cylinders = cylinders;
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d_ptr->m_LogicalSectorSize = sectorSize;
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d_ptr->m_PhysicalSectorSize = getPhysicalSectorSize(deviceNode);
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}
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qint32 DiskDevice::heads() const
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{
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return d_ptr->m_Heads;
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}
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qint32 DiskDevice::cylinders() const
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{
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return d_ptr->m_Cylinders;
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}
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qint32 DiskDevice::sectorsPerTrack() const
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{
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return d_ptr->m_SectorsPerTrack;
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}
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qint64 DiskDevice::physicalSectorSize() const
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{
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return d_ptr->m_PhysicalSectorSize;
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}
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qint64 DiskDevice::logicalSectorSize() const
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{
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return d_ptr->m_LogicalSectorSize;
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}
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qint64 DiskDevice::totalSectors() const
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{
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return static_cast<qint64>(d_ptr->m_Heads) * d_ptr->m_Cylinders * d_ptr->m_SectorsPerTrack;
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}
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qint64 DiskDevice::cylinderSize() const
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{
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return static_cast<qint64>(d_ptr->m_Heads) * d_ptr->m_SectorsPerTrack;
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}
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