650 lines
24 KiB
C++
650 lines
24 KiB
C++
/*
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KWin - the KDE window manager
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This file is part of the KDE project.
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SPDX-FileCopyrightText: 2014 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "main_wayland.h"
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#include <config-kwin.h>
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#include "composite.h"
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#include "effects.h"
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#include "inputmethod.h"
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#include "platform.h"
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#include "tabletmodemanager.h"
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#include "utils/realtime.h"
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#include "wayland/display.h"
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#include "wayland/seat_interface.h"
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#include "wayland_server.h"
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#include "workspace.h"
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#include "xwayland/xwayland.h"
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#include "xwayland/xwaylandlauncher.h"
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// KDE
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#include <KCrash>
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#include <KDesktopFile>
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#include <KLocalizedString>
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#include <KPluginMetaData>
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#include <KShell>
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// Qt
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#include <QCommandLineParser>
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#include <QDBusInterface>
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#include <QDebug>
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#include <QFileInfo>
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#include <QProcess>
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#include <QWindow>
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#include <qplatformdefs.h>
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#include <sched.h>
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#include <sys/resource.h>
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#include <iomanip>
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#include <iostream>
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Q_IMPORT_PLUGIN(KWinIntegrationPlugin)
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Q_IMPORT_PLUGIN(KGlobalAccelImpl)
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Q_IMPORT_PLUGIN(KWindowSystemKWinPlugin)
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Q_IMPORT_PLUGIN(KWinIdleTimePoller)
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#if PipeWire_FOUND
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Q_IMPORT_PLUGIN(ScreencastManagerFactory)
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#endif
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namespace KWin
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{
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static rlimit originalNofileLimit = {
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.rlim_cur = 0,
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.rlim_max = 0,
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};
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static bool bumpNofileLimit()
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{
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if (getrlimit(RLIMIT_NOFILE, &originalNofileLimit) == -1) {
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std::cerr << "Failed to bump RLIMIT_NOFILE limit, getrlimit() failed: " << strerror(errno) << std::endl;
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return false;
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}
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rlimit limit = originalNofileLimit;
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limit.rlim_cur = limit.rlim_max;
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if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
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std::cerr << "Failed to bump RLIMIT_NOFILE limit, setrlimit() failed: " << strerror(errno) << std::endl;
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return false;
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}
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return true;
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}
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static void restoreNofileLimit()
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{
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if (setrlimit(RLIMIT_NOFILE, &originalNofileLimit) == -1) {
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std::cerr << "Failed to restore RLIMIT_NOFILE limit, legacy apps might be broken" << std::endl;
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}
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}
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static void sighandler(int)
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{
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QApplication::exit();
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}
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void disableDrKonqi()
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{
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KCrash::setDrKonqiEnabled(false);
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}
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// run immediately, before Q_CORE_STARTUP functions
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// that would enable drkonqi
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Q_CONSTRUCTOR_FUNCTION(disableDrKonqi)
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//************************************
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// ApplicationWayland
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//************************************
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ApplicationWayland::ApplicationWayland(int &argc, char **argv)
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: ApplicationWaylandAbstract(OperationModeWaylandOnly, argc, argv)
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{
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}
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ApplicationWayland::~ApplicationWayland()
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{
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setTerminating();
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if (!waylandServer()) {
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return;
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}
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// need to unload all effects prior to destroying X connection as they might do X calls
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if (effects) {
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static_cast<EffectsHandlerImpl *>(effects)->unloadAllEffects();
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}
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delete m_xwayland;
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m_xwayland = nullptr;
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destroyWorkspace();
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destroyInputMethod();
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destroyCompositor();
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destroyInput();
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}
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void ApplicationWayland::performStartup()
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{
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if (m_startXWayland) {
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setOperationMode(OperationModeXwayland);
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setXwaylandScale(config()->group("Xwayland").readEntry("Scale", 1.0));
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}
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// first load options - done internally by a different thread
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createOptions();
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if (!platform()->initialize()) {
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std::exit(1);
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}
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waylandServer()->initPlatform();
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createColorManager();
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createInput();
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createInputMethod();
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TabletModeManager::create(this);
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createPlugins();
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createScreens();
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WaylandCompositor::create();
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connect(Compositor::self(), &Compositor::sceneCreated, platform(), &Platform::sceneInitialized);
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connect(Compositor::self(), &Compositor::sceneCreated, this, &ApplicationWayland::continueStartupWithScene);
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}
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void ApplicationWayland::continueStartupWithScene()
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{
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disconnect(Compositor::self(), &Compositor::sceneCreated, this, &ApplicationWayland::continueStartupWithScene);
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// Note that we start accepting client connections after creating the Workspace.
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createWorkspace();
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if (!waylandServer()->start()) {
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qFatal("Failed to initialze the Wayland server, exiting now");
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}
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if (operationMode() == OperationModeWaylandOnly) {
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finalizeStartup();
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return;
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}
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m_xwayland = new Xwl::Xwayland(this);
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m_xwayland->xwaylandLauncher()->setListenFDs(m_xwaylandListenFds);
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m_xwayland->xwaylandLauncher()->setDisplayName(m_xwaylandDisplay);
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m_xwayland->xwaylandLauncher()->setXauthority(m_xwaylandXauthority);
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connect(m_xwayland, &Xwl::Xwayland::errorOccurred, this, &ApplicationWayland::finalizeStartup);
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connect(m_xwayland, &Xwl::Xwayland::started, this, &ApplicationWayland::finalizeStartup);
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m_xwayland->start();
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}
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void ApplicationWayland::finalizeStartup()
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{
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if (m_xwayland) {
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disconnect(m_xwayland, &Xwl::Xwayland::errorOccurred, this, &ApplicationWayland::finalizeStartup);
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disconnect(m_xwayland, &Xwl::Xwayland::started, this, &ApplicationWayland::finalizeStartup);
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}
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startSession();
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notifyStarted();
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}
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void ApplicationWayland::refreshSettings(const KConfigGroup &group, const QByteArrayList &names)
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{
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if (group.name() == "Wayland" && names.contains("InputMethod")) {
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KDesktopFile file(group.readPathEntry("InputMethod", QString()));
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InputMethod::self()->setInputMethodCommand(file.desktopGroup().readEntry("Exec", QString()));
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}
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if (m_startXWayland && group.name() == "Xwayland" && names.contains("Scale")) {
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setXwaylandScale(group.readEntry("Scale", 1.0));
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}
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if (group.name() == "Wayland" && names.contains("EnablePrimarySelection")) {
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waylandServer()->setEnablePrimarySelection(group.readEntry("EnablePrimarySelection", true));
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}
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}
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void ApplicationWayland::startSession()
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{
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KSharedConfig::Ptr kwinSettings = kwinApp()->config();
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m_settingsWatcher = KConfigWatcher::create(kwinSettings);
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connect(m_settingsWatcher.data(), &KConfigWatcher::configChanged, this, &ApplicationWayland::refreshSettings);
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if (!m_inputMethodServerToStart.isEmpty()) {
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InputMethod::self()->setInputMethodCommand(m_inputMethodServerToStart);
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} else {
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refreshSettings(kwinSettings->group("Wayland"), {"InputMethod"});
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}
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// start session
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if (!m_sessionArgument.isEmpty()) {
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QStringList arguments = KShell::splitArgs(m_sessionArgument);
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if (!arguments.isEmpty()) {
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QString program = arguments.takeFirst();
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QProcess *p = new QProcess(this);
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p->setProcessChannelMode(QProcess::ForwardedErrorChannel);
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p->setProcessEnvironment(processStartupEnvironment());
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connect(p, qOverload<int, QProcess::ExitStatus>(&QProcess::finished), this, [p](int code, QProcess::ExitStatus status) {
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p->deleteLater();
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if (status == QProcess::CrashExit) {
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qWarning() << "Session process has crashed";
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QCoreApplication::exit(-1);
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return;
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}
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if (code) {
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qWarning() << "Session process exited with code" << code;
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}
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QCoreApplication::exit(code);
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});
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p->setProgram(program);
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p->setArguments(arguments);
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p->start();
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} else {
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qWarning("Failed to launch the session process: %s is an invalid command",
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qPrintable(m_sessionArgument));
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}
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}
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// start the applications passed to us as command line arguments
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if (!m_applicationsToStart.isEmpty()) {
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for (const QString &application : qAsConst(m_applicationsToStart)) {
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QStringList arguments = KShell::splitArgs(application);
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if (arguments.isEmpty()) {
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qWarning("Failed to launch application: %s is an invalid command",
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qPrintable(application));
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continue;
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}
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QString program = arguments.takeFirst();
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// note: this will kill the started process when we exit
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// this is going to happen anyway as we are the wayland and X server the app connects to
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QProcess *p = new QProcess(this);
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p->setProcessChannelMode(QProcess::ForwardedErrorChannel);
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p->setProcessEnvironment(processStartupEnvironment());
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p->setProgram(program);
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p->setArguments(arguments);
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p->startDetached();
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p->deleteLater();
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}
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}
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}
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static const QString s_waylandPlugin = QStringLiteral("KWinWaylandWaylandBackend");
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static const QString s_x11Plugin = QStringLiteral("KWinWaylandX11Backend");
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static const QString s_drmPlugin = QStringLiteral("KWinWaylandDrmBackend");
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static const QString s_virtualPlugin = QStringLiteral("KWinWaylandVirtualBackend");
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static QString automaticBackendSelection()
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{
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if (qEnvironmentVariableIsSet("WAYLAND_DISPLAY")) {
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return s_waylandPlugin;
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}
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if (qEnvironmentVariableIsSet("DISPLAY")) {
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return s_x11Plugin;
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}
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return s_drmPlugin;
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}
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} // namespace
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int main(int argc, char *argv[])
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{
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KWin::Application::setupMalloc();
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KWin::Application::setupLocalizedString();
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KWin::gainRealTime();
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if (signal(SIGTERM, KWin::sighandler) == SIG_IGN) {
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signal(SIGTERM, SIG_IGN);
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}
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if (signal(SIGINT, KWin::sighandler) == SIG_IGN) {
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signal(SIGINT, SIG_IGN);
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}
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if (signal(SIGHUP, KWin::sighandler) == SIG_IGN) {
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signal(SIGHUP, SIG_IGN);
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}
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signal(SIGPIPE, SIG_IGN);
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// It's easy to exceed the file descriptor limit because many things are backed using fds
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// nowadays, e.g. dmabufs, shm buffers, etc. Bump the RLIMIT_NOFILE limit to handle that.
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// Some apps may still use select(), so we reset the limit to its original value in fork().
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if (KWin::bumpNofileLimit()) {
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pthread_atfork(nullptr, nullptr, KWin::restoreNofileLimit);
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}
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QProcessEnvironment environment = QProcessEnvironment::systemEnvironment();
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// enforce our internal qpa plugin, unfortunately command line switch has precedence
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setenv("QT_QPA_PLATFORM", "wayland-org.kde.kwin.qpa", true);
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qunsetenv("QT_DEVICE_PIXEL_RATIO");
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qputenv("QSG_RENDER_LOOP", "basic");
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QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
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KWin::ApplicationWayland a(argc, argv);
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a.setupTranslator();
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// reset QT_QPA_PLATFORM so we don't propagate it to our children (e.g. apps launched from the overview effect)
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qunsetenv("QT_QPA_PLATFORM");
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KWin::Application::createAboutData();
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const auto availablePlugins = KPluginMetaData::findPlugins(QStringLiteral("org.kde.kwin.waylandbackends"));
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auto hasPlugin = [&availablePlugins](const QString &name) {
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return std::any_of(availablePlugins.begin(), availablePlugins.end(),
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[name](const KPluginMetaData &plugin) {
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return plugin.pluginId() == name;
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});
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};
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const bool hasSizeOption = hasPlugin(KWin::s_x11Plugin) || hasPlugin(KWin::s_virtualPlugin);
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const bool hasOutputCountOption = hasPlugin(KWin::s_x11Plugin);
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const bool hasX11Option = hasPlugin(KWin::s_x11Plugin);
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const bool hasVirtualOption = hasPlugin(KWin::s_virtualPlugin);
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const bool hasWaylandOption = hasPlugin(KWin::s_waylandPlugin);
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const bool hasDrmOption = hasPlugin(KWin::s_drmPlugin);
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QCommandLineOption xwaylandOption(QStringLiteral("xwayland"),
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i18n("Start a rootless Xwayland server."));
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QCommandLineOption waylandSocketOption(QStringList{QStringLiteral("s"), QStringLiteral("socket")},
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i18n("Name of the Wayland socket to listen on. If not set \"wayland-0\" is used."),
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QStringLiteral("socket"));
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QCommandLineOption x11DisplayOption(QStringLiteral("x11-display"),
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i18n("The X11 Display to use in windowed mode on platform X11."),
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QStringLiteral("display"));
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QCommandLineOption waylandDisplayOption(QStringLiteral("wayland-display"),
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i18n("The Wayland Display to use in windowed mode on platform Wayland."),
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QStringLiteral("display"));
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QCommandLineOption virtualFbOption(QStringLiteral("virtual"), i18n("Render to a virtual framebuffer."));
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QCommandLineOption widthOption(QStringLiteral("width"),
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i18n("The width for windowed mode. Default width is 1024."),
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QStringLiteral("width"));
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widthOption.setDefaultValue(QString::number(1024));
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QCommandLineOption heightOption(QStringLiteral("height"),
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i18n("The height for windowed mode. Default height is 768."),
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QStringLiteral("height"));
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heightOption.setDefaultValue(QString::number(768));
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QCommandLineOption scaleOption(QStringLiteral("scale"),
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i18n("The scale for windowed mode. Default value is 1."),
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QStringLiteral("scale"));
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scaleOption.setDefaultValue(QString::number(1));
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QCommandLineOption outputCountOption(QStringLiteral("output-count"),
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i18n("The number of windows to open as outputs in windowed mode. Default value is 1"),
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QStringLiteral("count"));
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outputCountOption.setDefaultValue(QString::number(1));
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QCommandLineOption waylandSocketFdOption(QStringLiteral("wayland-fd"),
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i18n("Wayland socket to use for incoming connections. This can be combined with --socket to name the socket"),
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QStringLiteral("wayland-fd"));
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QCommandLineOption xwaylandListenFdOption(QStringLiteral("xwayland-fd"),
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i18n("XWayland socket to use for Xwayland's incoming connections. This can be set multiple times"),
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QStringLiteral("xwayland-fds"));
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QCommandLineOption xwaylandDisplayOption(QStringLiteral("xwayland-display"),
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i18n("Name of the xwayland display that has been pre-set up"),
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"xwayland-display");
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QCommandLineOption xwaylandXAuthorityOption(QStringLiteral("xwayland-xauthority"),
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i18n("Name of the xauthority file "),
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"xwayland-xauthority");
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QCommandLineOption replaceOption(QStringLiteral("replace"),
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i18n("Exits this instance so it can be restarted by kwin_wayland_wrapper."));
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QCommandLineParser parser;
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a.setupCommandLine(&parser);
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parser.addOption(xwaylandOption);
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parser.addOption(waylandSocketOption);
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parser.addOption(waylandSocketFdOption);
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parser.addOption(xwaylandListenFdOption);
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parser.addOption(xwaylandDisplayOption);
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parser.addOption(xwaylandXAuthorityOption);
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parser.addOption(replaceOption);
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if (hasX11Option) {
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parser.addOption(x11DisplayOption);
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}
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if (hasWaylandOption) {
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parser.addOption(waylandDisplayOption);
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}
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if (hasVirtualOption) {
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parser.addOption(virtualFbOption);
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}
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if (hasSizeOption) {
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parser.addOption(widthOption);
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parser.addOption(heightOption);
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parser.addOption(scaleOption);
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}
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if (hasOutputCountOption) {
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parser.addOption(outputCountOption);
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}
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QCommandLineOption drmOption(QStringLiteral("drm"), i18n("Render through drm node."));
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if (hasDrmOption) {
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parser.addOption(drmOption);
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}
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QCommandLineOption inputMethodOption(QStringLiteral("inputmethod"),
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i18n("Input method that KWin starts."),
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QStringLiteral("path/to/imserver"));
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parser.addOption(inputMethodOption);
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QCommandLineOption listBackendsOption(QStringLiteral("list-backends"),
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i18n("List all available backends and quit."));
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parser.addOption(listBackendsOption);
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#if KWIN_BUILD_SCREENLOCKER
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QCommandLineOption screenLockerOption(QStringLiteral("lockscreen"),
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i18n("Starts the session in locked mode."));
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parser.addOption(screenLockerOption);
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QCommandLineOption noScreenLockerOption(QStringLiteral("no-lockscreen"),
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i18n("Starts the session without lock screen support."));
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parser.addOption(noScreenLockerOption);
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#endif
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QCommandLineOption noGlobalShortcutsOption(QStringLiteral("no-global-shortcuts"),
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i18n("Starts the session without global shortcuts support."));
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parser.addOption(noGlobalShortcutsOption);
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#if KWIN_BUILD_ACTIVITIES
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QCommandLineOption noActivitiesOption(QStringLiteral("no-kactivities"),
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i18n("Disable KActivities integration."));
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parser.addOption(noActivitiesOption);
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#endif
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QCommandLineOption exitWithSessionOption(QStringLiteral("exit-with-session"),
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i18n("Exit after the session application, which is started by KWin, closed."),
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QStringLiteral("/path/to/session"));
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parser.addOption(exitWithSessionOption);
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parser.addPositionalArgument(QStringLiteral("applications"),
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i18n("Applications to start once Wayland and Xwayland server are started"),
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QStringLiteral("[/path/to/application...]"));
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parser.process(a);
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a.processCommandLine(&parser);
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#if KWIN_BUILD_ACTIVITIES
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if (parser.isSet(noActivitiesOption)) {
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a.setUseKActivities(false);
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}
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#endif
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if (parser.isSet(replaceOption)) {
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QDBusMessage msg = QDBusMessage::createMethodCall(QStringLiteral("org.kde.KWin"), QStringLiteral("/KWin"),
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QStringLiteral("org.kde.KWin"), QStringLiteral("replace"));
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QDBusConnection::sessionBus().call(msg, QDBus::NoBlock);
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return 0;
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}
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if (parser.isSet(listBackendsOption)) {
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for (const auto &plugin : availablePlugins) {
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std::cout << std::setw(40) << std::left << qPrintable(plugin.name()) << qPrintable(plugin.description()) << std::endl;
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}
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return 0;
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}
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if (parser.isSet(exitWithSessionOption)) {
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a.setSessionArgument(parser.value(exitWithSessionOption));
|
|
}
|
|
|
|
QString pluginName;
|
|
QSize initialWindowSize;
|
|
QByteArray deviceIdentifier;
|
|
int outputCount = 1;
|
|
qreal outputScale = 1;
|
|
|
|
if (hasDrmOption && parser.isSet(drmOption)) {
|
|
pluginName = KWin::s_drmPlugin;
|
|
}
|
|
|
|
if (hasSizeOption) {
|
|
bool ok = false;
|
|
const int width = parser.value(widthOption).toInt(&ok);
|
|
if (!ok) {
|
|
std::cerr << "FATAL ERROR incorrect value for width" << std::endl;
|
|
return 1;
|
|
}
|
|
const int height = parser.value(heightOption).toInt(&ok);
|
|
if (!ok) {
|
|
std::cerr << "FATAL ERROR incorrect value for height" << std::endl;
|
|
return 1;
|
|
}
|
|
const qreal scale = parser.value(scaleOption).toDouble(&ok);
|
|
if (!ok || scale <= 0) {
|
|
std::cerr << "FATAL ERROR incorrect value for scale" << std::endl;
|
|
return 1;
|
|
}
|
|
|
|
outputScale = scale;
|
|
initialWindowSize = QSize(width, height);
|
|
}
|
|
|
|
if (hasOutputCountOption) {
|
|
bool ok = false;
|
|
const int count = parser.value(outputCountOption).toInt(&ok);
|
|
if (ok) {
|
|
outputCount = qMax(1, count);
|
|
}
|
|
}
|
|
|
|
if (hasX11Option && parser.isSet(x11DisplayOption)) {
|
|
deviceIdentifier = parser.value(x11DisplayOption).toUtf8();
|
|
pluginName = KWin::s_x11Plugin;
|
|
} else if (hasWaylandOption && parser.isSet(waylandDisplayOption)) {
|
|
deviceIdentifier = parser.value(waylandDisplayOption).toUtf8();
|
|
pluginName = KWin::s_waylandPlugin;
|
|
}
|
|
|
|
if (hasVirtualOption && parser.isSet(virtualFbOption)) {
|
|
pluginName = KWin::s_virtualPlugin;
|
|
}
|
|
|
|
if (pluginName.isEmpty()) {
|
|
std::cerr << "No backend specified through command line argument, trying auto resolution" << std::endl;
|
|
pluginName = KWin::automaticBackendSelection();
|
|
}
|
|
|
|
auto pluginIt = std::find_if(availablePlugins.begin(), availablePlugins.end(),
|
|
[&pluginName](const KPluginMetaData &plugin) {
|
|
return plugin.pluginId() == pluginName;
|
|
});
|
|
if (pluginIt == availablePlugins.end()) {
|
|
std::cerr << "FATAL ERROR: could not find a backend" << std::endl;
|
|
return 1;
|
|
}
|
|
|
|
// TODO: create backend without having the server running
|
|
KWin::WaylandServer *server = KWin::WaylandServer::create(&a);
|
|
|
|
KWin::WaylandServer::InitializationFlags flags;
|
|
#if KWIN_BUILD_SCREENLOCKER
|
|
if (parser.isSet(screenLockerOption)) {
|
|
flags = KWin::WaylandServer::InitializationFlag::LockScreen;
|
|
} else if (parser.isSet(noScreenLockerOption)) {
|
|
flags = KWin::WaylandServer::InitializationFlag::NoLockScreenIntegration;
|
|
}
|
|
#endif
|
|
if (parser.isSet(noGlobalShortcutsOption)) {
|
|
flags |= KWin::WaylandServer::InitializationFlag::NoGlobalShortcuts;
|
|
}
|
|
|
|
const QString socketName = parser.value(waylandSocketOption);
|
|
if (parser.isSet(waylandSocketFdOption)) {
|
|
bool ok;
|
|
int fd = parser.value(waylandSocketFdOption).toInt(&ok);
|
|
if (ok) {
|
|
// make sure we don't leak this FD to children
|
|
fcntl(fd, F_SETFD, O_CLOEXEC);
|
|
server->display()->addSocketFileDescriptor(fd, socketName);
|
|
} else {
|
|
std::cerr << "FATAL ERROR: could not parse socket FD" << std::endl;
|
|
return 1;
|
|
}
|
|
} else {
|
|
// socketName empty is fine here, addSocketName will automatically pick one
|
|
if (!server->display()->addSocketName(socketName)) {
|
|
std::cerr << "FATAL ERROR: could not add wayland socket " << qPrintable(socketName) << std::endl;
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (!server->init(flags)) {
|
|
std::cerr << "FATAL ERROR: could not create Wayland server" << std::endl;
|
|
return 1;
|
|
}
|
|
|
|
a.initPlatform(*pluginIt);
|
|
if (!a.platform()) {
|
|
std::cerr << "FATAL ERROR: could not instantiate a backend" << std::endl;
|
|
return 1;
|
|
}
|
|
if (!deviceIdentifier.isEmpty()) {
|
|
a.platform()->setDeviceIdentifier(deviceIdentifier);
|
|
}
|
|
if (initialWindowSize.isValid()) {
|
|
a.platform()->setInitialWindowSize(initialWindowSize);
|
|
}
|
|
a.platform()->setInitialOutputScale(outputScale);
|
|
a.platform()->setInitialOutputCount(outputCount);
|
|
|
|
QObject::connect(&a, &KWin::Application::workspaceCreated, server, &KWin::WaylandServer::initWorkspace);
|
|
if (!server->socketName().isEmpty()) {
|
|
environment.insert(QStringLiteral("WAYLAND_DISPLAY"), server->socketName());
|
|
qputenv("WAYLAND_DISPLAY", server->socketName().toUtf8());
|
|
}
|
|
a.setProcessStartupEnvironment(environment);
|
|
|
|
if (parser.isSet(xwaylandOption)) {
|
|
a.setStartXwayland(true);
|
|
|
|
if (parser.isSet(xwaylandListenFdOption)) {
|
|
const QStringList fdStrings = parser.values(xwaylandListenFdOption);
|
|
for (const QString &fdString : fdStrings) {
|
|
bool ok;
|
|
int fd = fdString.toInt(&ok);
|
|
if (ok) {
|
|
// make sure we don't leak this FD to children
|
|
fcntl(fd, F_SETFD, O_CLOEXEC);
|
|
a.addXwaylandSocketFileDescriptor(fd);
|
|
}
|
|
}
|
|
if (parser.isSet(xwaylandDisplayOption)) {
|
|
a.setXwaylandDisplay(parser.value(xwaylandDisplayOption));
|
|
} else {
|
|
std::cerr << "Using xwayland-fd without xwayland-display is undefined" << std::endl;
|
|
return 1;
|
|
}
|
|
if (parser.isSet(xwaylandXAuthorityOption)) {
|
|
a.setXwaylandXauthority(parser.value(xwaylandXAuthorityOption));
|
|
}
|
|
}
|
|
}
|
|
|
|
a.setApplicationsToStart(parser.positionalArguments());
|
|
a.setInputMethodServerToStart(parser.value(inputMethodOption));
|
|
a.start();
|
|
|
|
return a.exec();
|
|
}
|