File indexing completed on 2024-04-28 05:45:44

 /*
     SPDX-FileCopyrightText: 2008-2010 Volker Lanz <vl@fidra.de>
     SPDX-FileCopyrightText: 2012-2018 Andrius Štikonas <andrius@stikonas.eu>
     SPDX-FileCopyrightText: 2015 Teo Mrnjavac <teo@kde.org>
     SPDX-FileCopyrightText: 2016 Chantara Tith <tith.chantara@gmail.com>
 
     SPDX-License-Identifier: GPL-3.0-or-later
 */
 
 #include "core/diskdevice.h"
 #include "core/device_p.h"
 
 #include "core/partitiontable.h"
 #include "core/smartstatus.h"
 
 #include <KLocalizedString>
 
 #include <QFile>
 #include <QByteArray>
 
 #include <sys/ioctl.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <unistd.h>
 #ifdef __gnu_linux__
   #include <linux/fs.h>
 #endif
 
 #if !defined(BLKPBSZGET)
 #define BLKPBSZGET _IO(0x12,123)/* get block physical sector size */
 #endif
 
 #define d_ptr std::static_pointer_cast<DiskDevicePrivate>(d)
 
 class DiskDevicePrivate : public DevicePrivate
 {
 public:
     qint32 m_Heads;
     qint32 m_SectorsPerTrack;
     qint32 m_Cylinders;
     qint64 m_LogicalSectorSize;
     qint64 m_PhysicalSectorSize;
 };
 
 static qint64 getPhysicalSectorSize(const QString& device_node)
 {
     /*
      * possible ways of getting the physical sector size for a drive:
      * - ioctl(BLKPBSZGET) -- supported with Linux 2.6.32 and later
      * - /sys/block/sda/queue/physical_block_size
      * - libblkid from util-linux 2.17 or later (not implemented)
      */
 
 #if defined(BLKPBSZGET)
     int phSectorSize = -1;
     int fd = open(device_node.toLocal8Bit().constData(), O_RDONLY);
     if (fd != -1) {
         if (ioctl(fd, BLKPBSZGET, &phSectorSize) >= 0) {
             close(fd);
             return phSectorSize;
         }
 
         close(fd);
     }
 #endif
 
     QFile f(QStringLiteral("/sys/block/%1/queue/physical_block_size").arg(QString(device_node).remove(QStringLiteral("/dev/"))));
 
     if (f.open(QIODevice::ReadOnly)) {
         QByteArray a = f.readLine();
         return a.trimmed().toInt();
     }
 
     return -1;
 }
 
 /** Constructs a Disk Device with an empty PartitionTable.
     @param name the Device's name, usually some string defined by the manufacturer
     @param deviceNode the Device's node, for example "/dev/sda"
     @param heads the number of heads in CHS notation
     @param numSectors the number of sectors in CHS notation
     @param cylinders the number of cylinders in CHS notation
     @param sectorSize the size of a sector in bytes
 */
 DiskDevice::DiskDevice(const QString& name,
                        const QString& deviceNode,
                        qint32 heads,
                        qint32 numSectors,
                        qint32 cylinders,
                        qint64 sectorSize,
                        const QString& iconName)
     : Device(std::make_shared<DiskDevicePrivate>(), name, deviceNode, sectorSize, (static_cast<qint64>(heads) * cylinders * numSectors), iconName, Device::Type::Disk_Device)
 {
     d_ptr->m_Heads = heads;
     d_ptr->m_SectorsPerTrack = numSectors;
     d_ptr->m_Cylinders = cylinders;
     d_ptr->m_LogicalSectorSize = sectorSize;
     d_ptr->m_PhysicalSectorSize = getPhysicalSectorSize(deviceNode);
 }
 
 qint32 DiskDevice::heads() const
 {
     return d_ptr->m_Heads;
 }
 
 qint32 DiskDevice::cylinders() const
 {
     return d_ptr->m_Cylinders;
 }
 
 qint32 DiskDevice::sectorsPerTrack() const
 {
     return d_ptr->m_SectorsPerTrack;
 }
 
 qint64 DiskDevice::physicalSectorSize() const
 {
     return d_ptr->m_PhysicalSectorSize;
 }
 
 qint64 DiskDevice::logicalSectorSize() const
 {
     return d_ptr->m_LogicalSectorSize;
 }
 
 qint64 DiskDevice::totalSectors() const
 {
     return static_cast<qint64>(d_ptr->m_Heads) * d_ptr->m_Cylinders * d_ptr->m_SectorsPerTrack;
 }
 
 qint64 DiskDevice::cylinderSize() const
 {
     return static_cast<qint64>(d_ptr->m_Heads) * d_ptr->m_SectorsPerTrack;
 }