1/* 2 * Copyright (C) 2010 Apple Inc. All rights reserved. 3 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies) 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 24 * THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include "config.h" 28#include "ProcessLauncher.h" 29 30#include "Connection.h" 31#include "RunLoop.h" 32#include "WebProcess.h" 33#include <QApplication> 34#include <QDebug> 35#include <QFile> 36#include <QLocalServer> 37#include <QMetaType> 38#include <QProcess> 39#include <QString> 40#include <QtCore/qglobal.h> 41#include <WebCore/NotImplemented.h> 42#include <errno.h> 43#include <fcntl.h> 44#include <runtime/InitializeThreading.h> 45#include <string> 46#include <sys/resource.h> 47#include <sys/socket.h> 48#include <unistd.h> 49#include <wtf/HashSet.h> 50#include <wtf/PassRefPtr.h> 51#include <wtf/Threading.h> 52#include <wtf/text/WTFString.h> 53#if defined Q_OS_LINUX 54#include <sys/prctl.h> 55#include <signal.h> 56#endif 57 58using namespace WebCore; 59 60namespace WebKit { 61 62class QtWebProcess : public QProcess 63{ 64 Q_OBJECT 65public: 66 QtWebProcess(QObject* parent = 0) 67 : QProcess(parent) 68 { 69 } 70 71protected: 72 virtual void setupChildProcess(); 73}; 74 75void QtWebProcess::setupChildProcess() 76{ 77#if defined Q_OS_LINUX 78#ifndef NDEBUG 79 if (getenv("QT_WEBKIT_KEEP_ALIVE_WEB_PROCESS")) 80 return; 81#endif 82 prctl(PR_SET_PDEATHSIG, SIGKILL); 83#endif 84} 85 86#if OS(SYMBIAN) 87// FIXME: Symbian's POSIX layer doesn't have a socketpair(), so 88// the following is just to fix the build until a pure Symbian 89// IPC implementation lands on trunk 90static int socketpair(int, int, int , int[2]) 91{ 92 return -1; 93} 94#endif 95 96void ProcessLauncher::launchProcess() 97{ 98 QString applicationPath = QLatin1String("%1 %2"); 99 100 if (QFile::exists(QCoreApplication::applicationDirPath() + QLatin1String("/QtWebProcess"))) { 101 applicationPath = applicationPath.arg(QCoreApplication::applicationDirPath() + QLatin1String("/QtWebProcess")); 102 } else { 103 applicationPath = applicationPath.arg(QLatin1String("QtWebProcess")); 104 } 105 106 int sockets[2]; 107 if (socketpair(AF_UNIX, SOCK_DGRAM, 0, sockets) == -1) { 108 qDebug() << "Creation of socket failed with errno:" << errno; 109 ASSERT_NOT_REACHED(); 110 return; 111 } 112 113 // Don't expose the ui socket to the web process 114 while (fcntl(sockets[1], F_SETFD, FD_CLOEXEC) == -1) { 115 if (errno != EINTR) { 116 ASSERT_NOT_REACHED(); 117 while (close(sockets[0]) == -1 && errno == EINTR) { } 118 while (close(sockets[1]) == -1 && errno == EINTR) { } 119 return; 120 } 121 } 122 123 QString program(applicationPath.arg(sockets[0])); 124 125 QProcess* webProcess = new QtWebProcess(); 126 webProcess->setProcessChannelMode(QProcess::ForwardedChannels); 127 webProcess->start(program); 128 129 // Don't expose the web socket to possible future web processes 130 while (fcntl(sockets[0], F_SETFD, FD_CLOEXEC) == -1) { 131 if (errno != EINTR) { 132 ASSERT_NOT_REACHED(); 133 delete webProcess; 134 return; 135 } 136 } 137 138 if (!webProcess->waitForStarted()) { 139 qDebug() << "Failed to start" << program; 140 ASSERT_NOT_REACHED(); 141 delete webProcess; 142 return; 143 } 144 145 setpriority(PRIO_PROCESS, webProcess->pid(), 10); 146 147 RunLoop::main()->scheduleWork(WorkItem::create(this, &WebKit::ProcessLauncher::didFinishLaunchingProcess, webProcess, sockets[1])); 148} 149 150void ProcessLauncher::terminateProcess() 151{ 152 if (!m_processIdentifier) 153 return; 154 155 QObject::connect(m_processIdentifier, SIGNAL(finished(int)), m_processIdentifier, SLOT(deleteLater()), Qt::QueuedConnection); 156 m_processIdentifier->terminate(); 157} 158 159void ProcessLauncher::platformInvalidate() 160{ 161 162} 163 164} // namespace WebKit 165 166#include "ProcessLauncherQt.moc" 167