udev.h

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/*
    KWin - the KDE window manager
    This file is part of the KDE project.
 
    SPDX-FileCopyrightText: 2014 Martin Gräßlin <mgraesslin@kde.org>
 
    SPDX-License-Identifier: GPL-2.0-or-later
*/
#pragma once
#include <kwin_export.h>
#include <memory>
 
#include <QList>
#include <vector>
 
#include <sys/types.h>
 
struct udev;
struct udev_device;
struct udev_monitor;
 
namespace KWin
{
class Udev;
 
class KWIN_EXPORT UdevDevice
{
public:
    UdevDevice(udev_device *device);
    ~UdevDevice();
 
    QString devNode() const;
    dev_t devNum() const;
    const char *property(const char *key);
    bool hasProperty(const char *key, const char *value);
    QString action() const;
 
    QMap<QByteArray, QByteArray> properties() const;
    bool isBootVga() const;
    QString seat() const;
    bool isHotpluggable() const;
 
    operator udev_device *() const
    {
        return m_device;
    }
    operator udev_device *()
    {
        return m_device;
    }
 
private:
    udev_device *const m_device;
};
 
class KWIN_EXPORT UdevMonitor
{
public:
    explicit UdevMonitor(Udev *udev);
    ~UdevMonitor();
 
    int fd() const;
    bool isValid() const
    {
        return m_monitor != nullptr;
    }
    void filterSubsystemDevType(const char *subSystem, const char *devType = nullptr);
    void enable();
    std::unique_ptr<UdevDevice> getDevice();
 
private:
    udev_monitor *m_monitor;
};
 
class KWIN_EXPORT Udev
{
public:
    Udev();
    ~Udev();
 
    bool isValid() const
    {
        return m_udev != nullptr;
    }
    std::vector<std::unique_ptr<UdevDevice>> listGPUs();
    std::unique_ptr<UdevDevice> deviceFromSyspath(const char *syspath);
    std::unique_ptr<UdevMonitor> monitor();
    operator udev *() const
    {
        return m_udev;
    }
    operator udev *()
    {
        return m_udev;
    }
 
private:
    struct udev *m_udev;
};
 
}