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100 lines
3.2 KiB
100 lines
3.2 KiB
/* BEGIN_COMMON_COPYRIGHT_HEADER
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* (c)LGPL2+
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*
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* LXQt - a lightweight, Qt based, desktop toolset
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* http://lxqt.org
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*
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* Copyright: 2015 LXQt team
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* Authors:
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* Palo Kisa <palo.kisa@gmail.com>
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*
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* This program or library is free software; you can redistribute it
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* and/or modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*
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* END_COMMON_COPYRIGHT_HEADER */
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#include "UdevNotifier.h"
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#include "log.h"
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#include <libudev.h>
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#include <QSocketNotifier>
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class UdevNotifier::Impl
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{
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public:
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struct udev * udev;
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struct udev_monitor * monitor;
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QScopedPointer<QSocketNotifier> notifier;
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};
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UdevNotifier::UdevNotifier(QString const & subsystem, QObject * parent/* = nullptr*/)
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: QObject(parent)
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, d(new Impl)
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{
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d->udev = udev_new();
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d->monitor = udev_monitor_new_from_netlink(d->udev, "udev");
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if (nullptr == d->monitor)
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{
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qCWarning(SESSION) << QStringLiteral("UdevNotifier: unable to initialize udev_monitor, monitoring will be disabled");
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return;
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}
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int ret = udev_monitor_filter_add_match_subsystem_devtype(d->monitor, subsystem.toUtf8().constData(), nullptr);
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if (0 != ret)
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qCWarning(SESSION) << QStringLiteral("UdevNotifier: unable to add match subsystem, monitor will receive all devices");
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ret = udev_monitor_enable_receiving(d->monitor);
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if (0 != ret)
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{
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qCWarning(SESSION) << QStringLiteral("UdevNotifier: unable to enable receiving(%1), monitoring will be disabled").arg(ret);
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return;
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}
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d->notifier.reset(new QSocketNotifier(udev_monitor_get_fd(d->monitor), QSocketNotifier::Read));
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connect(d->notifier.data(), &QSocketNotifier::activated, this, &UdevNotifier::eventReady);
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d->notifier->setEnabled(true);
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}
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UdevNotifier::~UdevNotifier()
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{
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if (d->monitor)
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udev_monitor_unref(d->monitor);
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udev_unref(d->udev);
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}
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void UdevNotifier::eventReady(int socket)
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{
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struct udev_device * dev;
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while (nullptr != (dev = udev_monitor_receive_device(d->monitor)))
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{
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QString const action = udev_device_get_action(dev);
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QString const device = udev_device_get_devpath(dev);
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if (QStringLiteral("add") == action)
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emit deviceAdded(std::move(device));
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else if (QStringLiteral("remove") == action)
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emit deviceRemoved(std::move(device));
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else if (QStringLiteral("change") == action)
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emit deviceChanged(std::move(device));
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else if (QStringLiteral("online") == action)
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emit deviceOnline(std::move(device));
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else if (QStringLiteral("offline") == action)
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emit deviceOffline(std::move(device));
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udev_device_unref(dev);
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}
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}
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