Attachment 369289 Details for Bug 197661 – Patch

[patch] Patch

bug-197661-20190507090250.patch (text/plain), 76.43 KB, created by Chris Dumez on 2019-05-07 09:02:51 PDT

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Creator: Chris Dumez

Created: 2019-05-07 09:02:51 PDT

Size: 76.43 KB

patch

obsolete

>Subversion Revision: 245009
>diff --git a/Source/WebKit/ChangeLog b/Source/WebKit/ChangeLog
>index 88ce45ee303d8a8e33e9b3d41a62ad179616778e..e86afe613cd98549413608bd409aa8f88c65c979 100644
>--- a/Source/WebKit/ChangeLog
>+++ b/Source/WebKit/ChangeLog
>@@ -1,3 +1,58 @@
>+2019-05-07  Chris Dumez  <cdumez@apple.com>
>+
>+        Rename ConnectionMac.mm to ConnectionCocoa.mm since it is used on both macOS and iOS
>+        https://bugs.webkit.org/show_bug.cgi?id=197661
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        * Platform/IPC/cocoa/ConnectionCocoa.mm: Renamed from Source/WebKit/Platform/IPC/mac/ConnectionMac.mm.
>+        (IPC::ConnectionTerminationWatchdog::createConnectionTerminationWatchdog):
>+        (IPC::ConnectionTerminationWatchdog::ConnectionTerminationWatchdog):
>+        (IPC::ConnectionTerminationWatchdog::watchdogTimerFired):
>+        (IPC::Connection::platformInvalidate):
>+        (IPC::Connection::cancelReceiveSource):
>+        (IPC::Connection::terminateSoon):
>+        (IPC::Connection::platformInitialize):
>+        (IPC::Connection::open):
>+        (IPC::Connection::sendMessage):
>+        (IPC::Connection::platformCanSendOutgoingMessages const):
>+        (IPC::Connection::sendOutgoingMessage):
>+        (IPC::Connection::initializeSendSource):
>+        (IPC::Connection::resumeSendSource):
>+        (IPC::createMessageDecoder):
>+        (IPC::readFromMachPort):
>+        (IPC::Connection::receiveSourceEventHandler):
>+        (IPC::Connection::identifier const):
>+        (IPC::Connection::getAuditToken):
>+        (IPC::Connection::kill):
>+        (IPC::AccessibilityProcessSuspendedNotification):
>+        (IPC::Connection::willSendSyncMessage):
>+        (IPC::Connection::didReceiveSyncReply):
>+        (IPC::Connection::remoteProcessID const):
>+        * Platform/IPC/cocoa/ImportanceAssertion.h: Renamed from Source/WebKit/Platform/IPC/mac/ImportanceAssertion.h.
>+        (IPC::ImportanceAssertion::ImportanceAssertion):
>+        (IPC::ImportanceAssertion::~ImportanceAssertion):
>+        * Platform/IPC/cocoa/MachMessage.cpp: Renamed from Source/WebKit/Platform/IPC/mac/MachMessage.cpp.
>+        (IPC::MachMessage::create):
>+        (IPC::MachMessage::MachMessage):
>+        (IPC::MachMessage::~MachMessage):
>+        (IPC::MachMessage::messageSize):
>+        (IPC::MachMessage::leakDescriptors):
>+        * Platform/IPC/cocoa/MachMessage.h: Renamed from Source/WebKit/Platform/IPC/mac/MachMessage.h.
>+        (IPC::MachMessage::size const):
>+        (IPC::MachMessage::header):
>+        (IPC::MachMessage::messageReceiverName const):
>+        (IPC::MachMessage::messageName const):
>+        * Platform/IPC/cocoa/MachPort.h: Renamed from Source/WebKit/Platform/IPC/mac/MachPort.h.
>+        (IPC::MachPort::MachPort):
>+        (IPC::MachPort::encode const):
>+        (IPC::MachPort::decode):
>+        (IPC::MachPort::port const):
>+        (IPC::MachPort::disposition const):
>+        * PlatformMac.cmake:
>+        * SourcesCocoa.txt:
>+        * WebKit.xcodeproj/project.pbxproj:
>+
> 2019-05-07  Wenson Hsieh  <wenson_hsieh@apple.com>
> 
>         [macOS] Avoid crashing the UI process when writing empty data to the pasteboard
>diff --git a/Source/WebKit/Platform/IPC/cocoa/ConnectionCocoa.mm b/Source/WebKit/Platform/IPC/cocoa/ConnectionCocoa.mm
>new file mode 100644
>index 0000000000000000000000000000000000000000..e0a29f099ddd6cc972e5eec535d371c7cef491aa
>--- /dev/null
>+++ b/Source/WebKit/Platform/IPC/cocoa/ConnectionCocoa.mm
>@@ -0,0 +1,654 @@
>+/*
>+ * Copyright (C) 2010-2018 Apple Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions
>+ * are met:
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above copyright
>+ *    notice, this list of conditions and the following disclaimer in the
>+ *    documentation and/or other materials provided with the distribution.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>+ * THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#import "config.h"
>+#import "Connection.h"
>+
>+#import "DataReference.h"
>+#import "ImportanceAssertion.h"
>+#import "MachMessage.h"
>+#import "MachPort.h"
>+#import "MachUtilities.h"
>+#import "WKCrashReporter.h"
>+#import <WebCore/AXObjectCache.h>
>+#import <mach/mach_error.h>
>+#import <mach/vm_map.h>
>+#import <sys/mman.h>
>+#import <wtf/MachSendRight.h>
>+#import <wtf/RunLoop.h>
>+#import <wtf/spi/darwin/XPCSPI.h>
>+
>+#if PLATFORM(IOS_FAMILY)
>+#import "ProcessAssertion.h"
>+#import <UIKit/UIAccessibility.h>
>+
>+#if USE(APPLE_INTERNAL_SDK)
>+#import <AXRuntime/AXDefines.h>
>+#import <AXRuntime/AXNotificationConstants.h>
>+#else
>+#define kAXPidStatusChangedNotification 0
>+#endif
>+
>+#endif
>+
>+#if PLATFORM(MAC)
>+
>+#if USE(APPLE_INTERNAL_SDK)
>+#import <ApplicationServices/ApplicationServicesPriv.h>
>+#else
>+typedef enum {
>+    AXSuspendStatusRunning = 0,
>+    AXSuspendStatusSuspended,
>+} AXSuspendStatus;
>+#endif
>+
>+extern "C" AXError _AXUIElementNotifyProcessSuspendStatus(AXSuspendStatus);
>+
>+#endif // PLATFORM(MAC)
>+
>+namespace IPC {
>+
>+static const size_t inlineMessageMaxSize = 4096;
>+
>+// Arbitrary message IDs that do not collide with Mach notification messages (used my initials).
>+constexpr mach_msg_id_t inlineBodyMessageID = 0xdba0dba;
>+constexpr mach_msg_id_t outOfLineBodyMessageID = 0xdba1dba;
>+
>+// ConnectionTerminationWatchdog does two things:
>+// 1) It sets a watchdog timer to kill the peered process.
>+// 2) On iOS, make the process runnable for the duration of the watchdog
>+//    to ensure it has a chance to terminate cleanly.
>+class ConnectionTerminationWatchdog {
>+public:
>+    static void createConnectionTerminationWatchdog(OSObjectPtr<xpc_connection_t>& xpcConnection, Seconds interval)
>+    {
>+        new ConnectionTerminationWatchdog(xpcConnection, interval);
>+    }
>+    
>+private:
>+    ConnectionTerminationWatchdog(OSObjectPtr<xpc_connection_t>& xpcConnection, Seconds interval)
>+        : m_xpcConnection(xpcConnection)
>+        , m_watchdogTimer(RunLoop::main(), this, &ConnectionTerminationWatchdog::watchdogTimerFired)
>+#if PLATFORM(IOS_FAMILY)
>+        , m_assertion(std::make_unique<WebKit::ProcessAndUIAssertion>(xpc_connection_get_pid(m_xpcConnection.get()), "ConnectionTerminationWatchdog"_s, WebKit::AssertionState::Background))
>+#endif
>+    {
>+        m_watchdogTimer.startOneShot(interval);
>+    }
>+    
>+    void watchdogTimerFired()
>+    {
>+        xpc_connection_kill(m_xpcConnection.get(), SIGKILL);
>+        delete this;
>+    }
>+
>+    OSObjectPtr<xpc_connection_t> m_xpcConnection;
>+    RunLoop::Timer<ConnectionTerminationWatchdog> m_watchdogTimer;
>+#if PLATFORM(IOS_FAMILY)
>+    std::unique_ptr<WebKit::ProcessAndUIAssertion> m_assertion;
>+#endif
>+};
>+    
>+void Connection::platformInvalidate()
>+{
>+    if (!m_isConnected) {
>+        if (m_sendPort) {
>+            ASSERT(!m_isServer);
>+            deallocateSendRightSafely(m_sendPort);
>+            m_sendPort = MACH_PORT_NULL;
>+        }
>+
>+        if (m_receiveSource) {
>+            // For a short period of time, when m_isServer is true and open() has been called, m_receiveSource has been initialized
>+            // but m_isConnected has not been set to true yet. In this case, we need to cancel m_receiveSource instead of destroying
>+            // m_receivePort ourselves.
>+            ASSERT(m_isServer);
>+            cancelReceiveSource();
>+        }
>+
>+        if (m_receivePort) {
>+            ASSERT(m_isServer);
>+#if !PLATFORM(WATCHOS)
>+            mach_port_unguard(mach_task_self(), m_receivePort, reinterpret_cast<mach_port_context_t>(this));
>+#endif
>+            mach_port_mod_refs(mach_task_self(), m_receivePort, MACH_PORT_RIGHT_RECEIVE, -1);
>+            m_receivePort = MACH_PORT_NULL;
>+        }
>+
>+        return;
>+    }
>+
>+    m_pendingOutgoingMachMessage = nullptr;
>+    m_isInitializingSendSource = false;
>+    m_isConnected = false;
>+
>+    ASSERT(m_sendPort);
>+    ASSERT(m_receivePort);
>+
>+    // Unregister our ports.
>+    dispatch_source_cancel(m_sendSource);
>+    dispatch_release(m_sendSource);
>+    m_sendSource = nullptr;
>+    m_sendPort = MACH_PORT_NULL;
>+
>+    cancelReceiveSource();
>+}
>+
>+void Connection::cancelReceiveSource()
>+{
>+    dispatch_source_cancel(m_receiveSource);
>+    dispatch_release(m_receiveSource);
>+    m_receiveSource = nullptr;
>+    m_receivePort = MACH_PORT_NULL;
>+}
>+    
>+void Connection::terminateSoon(Seconds interval)
>+{
>+    if (m_xpcConnection)
>+        ConnectionTerminationWatchdog::createConnectionTerminationWatchdog(m_xpcConnection, interval);
>+}
>+    
>+void Connection::platformInitialize(Identifier identifier)
>+{
>+    if (!MACH_PORT_VALID(identifier.port))
>+        return;
>+
>+    if (m_isServer) {
>+        m_receivePort = identifier.port;
>+        m_sendPort = MACH_PORT_NULL;
>+
>+#if !PLATFORM(WATCHOS)
>+        mach_port_guard(mach_task_self(), m_receivePort, reinterpret_cast<mach_port_context_t>(this), true);
>+#endif
>+    } else {
>+        m_receivePort = MACH_PORT_NULL;
>+        m_sendPort = identifier.port;
>+    }
>+
>+    m_sendSource = nullptr;
>+    m_receiveSource = nullptr;
>+
>+    m_xpcConnection = identifier.xpcConnection;
>+}
>+
>+bool Connection::open()
>+{
>+    if (m_isServer) {
>+        ASSERT(m_receivePort);
>+        ASSERT(!m_sendPort);
>+        ASSERT(MACH_PORT_VALID(m_receivePort));
>+    } else {
>+        ASSERT(!m_receivePort);
>+        ASSERT(m_sendPort);
>+        ASSERT(MACH_PORT_VALID(m_sendPort));
>+
>+        auto kr = mach_port_allocate(mach_task_self(), MACH_PORT_RIGHT_RECEIVE, &m_receivePort);
>+        if (kr != KERN_SUCCESS) {
>+            LOG_ERROR("Could not allocate mach port, error %x: %s", kr, mach_error_string(kr));
>+            CRASH();
>+        }
>+#if !PLATFORM(WATCHOS)
>+        mach_port_guard(mach_task_self(), m_receivePort, reinterpret_cast<mach_port_context_t>(this), true);
>+#endif
>+
>+#if PLATFORM(MAC)
>+        mach_port_set_attributes(mach_task_self(), m_receivePort, MACH_PORT_DENAP_RECEIVER, (mach_port_info_t)0, 0);
>+#endif
>+
>+        m_isConnected = true;
>+        
>+        // Send the initialize message, which contains a send right for the server to use.
>+        auto encoder = std::make_unique<Encoder>("IPC", "InitializeConnection", 0);
>+        encoder->encode(MachPort(m_receivePort, MACH_MSG_TYPE_MAKE_SEND));
>+
>+        initializeSendSource();
>+
>+        sendMessage(WTFMove(encoder), { });
>+    }
>+
>+    // Change the message queue length for the receive port.
>+    setMachPortQueueLength(m_receivePort, MACH_PORT_QLIMIT_LARGE);
>+
>+    m_receiveSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_MACH_RECV, m_receivePort, 0, m_connectionQueue->dispatchQueue());
>+    dispatch_source_set_event_handler(m_receiveSource, [this, protectedThis = makeRef(*this)] {
>+        receiveSourceEventHandler();
>+    });
>+    dispatch_source_set_cancel_handler(m_receiveSource, [protectedThis = makeRef(*this), receivePort = m_receivePort] {
>+#if !PLATFORM(WATCHOS)
>+        mach_port_unguard(mach_task_self(), receivePort, reinterpret_cast<mach_port_context_t>(protectedThis.ptr()));
>+#endif
>+        mach_port_mod_refs(mach_task_self(), receivePort, MACH_PORT_RIGHT_RECEIVE, -1);
>+    });
>+
>+    ref();
>+    dispatch_async(m_connectionQueue->dispatchQueue(), ^{
>+        dispatch_resume(m_receiveSource);
>+
>+        if (m_sendSource)
>+            dispatch_resume(m_sendSource);
>+
>+        deref();
>+    });
>+
>+    return true;
>+}
>+
>+bool Connection::sendMessage(std::unique_ptr<MachMessage> message)
>+{
>+    ASSERT(message);
>+    ASSERT(!m_pendingOutgoingMachMessage);
>+    ASSERT(!m_isInitializingSendSource);
>+
>+    // Send the message.
>+    kern_return_t kr = mach_msg(message->header(), MACH_SEND_MSG | MACH_SEND_TIMEOUT | MACH_SEND_NOTIFY, message->size(), 0, MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
>+    switch (kr) {
>+    case MACH_MSG_SUCCESS:
>+        // The kernel has already adopted the descriptors.
>+        message->leakDescriptors();
>+        return true;
>+
>+    case MACH_SEND_TIMED_OUT:
>+        // We timed out, stash away the message for later.
>+        m_pendingOutgoingMachMessage = WTFMove(message);
>+        return false;
>+
>+    case MACH_SEND_INVALID_DEST:
>+        // The other end has disappeared, we'll get a dead name notification which will cause us to be invalidated.
>+        return false;
>+
>+    default:
>+        WebKit::setCrashReportApplicationSpecificInformation((__bridge CFStringRef)[NSString stringWithFormat:@"Unhandled error code %x, message '%s::%s'", kr, message->messageReceiverName().data(), message->messageName().data()]);
>+        CRASH();
>+    }
>+}
>+
>+bool Connection::platformCanSendOutgoingMessages() const
>+{
>+    return !m_pendingOutgoingMachMessage && !m_isInitializingSendSource;
>+}
>+
>+bool Connection::sendOutgoingMessage(std::unique_ptr<Encoder> encoder)
>+{
>+    ASSERT(!m_pendingOutgoingMachMessage && !m_isInitializingSendSource);
>+
>+    auto attachments = encoder->releaseAttachments();
>+    
>+    auto numberOfPortDescriptors = std::count_if(attachments.begin(), attachments.end(), [](auto& attachment)
>+    {
>+        return attachment.type() == Attachment::MachPortType;
>+    });
>+
>+    bool messageBodyIsOOL = false;
>+    auto messageSize = MachMessage::messageSize(encoder->bufferSize(), numberOfPortDescriptors, messageBodyIsOOL);
>+    if (messageSize > inlineMessageMaxSize) {
>+        messageBodyIsOOL = true;
>+        messageSize = MachMessage::messageSize(0, numberOfPortDescriptors, messageBodyIsOOL);
>+    }
>+
>+    auto message = MachMessage::create(encoder->messageReceiverName().toString(), encoder->messageName().toString(), messageSize);
>+
>+    auto* header = message->header();
>+    header->msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, 0);
>+    header->msgh_size = messageSize;
>+    header->msgh_remote_port = m_sendPort;
>+    header->msgh_local_port = MACH_PORT_NULL;
>+    header->msgh_id = messageBodyIsOOL ? outOfLineBodyMessageID : inlineBodyMessageID;
>+
>+    auto* messageData = reinterpret_cast<uint8_t*>(header + 1);
>+
>+    bool isComplex = numberOfPortDescriptors || messageBodyIsOOL;
>+    if (isComplex) {
>+        header->msgh_bits |= MACH_MSGH_BITS_COMPLEX;
>+
>+        auto* body = reinterpret_cast<mach_msg_body_t*>(messageData);
>+        body->msgh_descriptor_count = numberOfPortDescriptors + messageBodyIsOOL;
>+        messageData = reinterpret_cast<uint8_t*>(body + 1);
>+
>+        auto getDescriptorAndAdvance = [](uint8_t*& data, std::size_t toAdvance) {
>+            return reinterpret_cast<mach_msg_descriptor_t*>(std::exchange(data, data + toAdvance));
>+        };
>+
>+        for (auto& attachment : attachments) {
>+            ASSERT(attachment.type() == Attachment::MachPortType);
>+            if (attachment.type() == Attachment::MachPortType) {
>+                auto* descriptor = getDescriptorAndAdvance(messageData, sizeof(mach_msg_port_descriptor_t));
>+                descriptor->port.name = attachment.port();
>+                descriptor->port.disposition = attachment.disposition();
>+                descriptor->port.type = MACH_MSG_PORT_DESCRIPTOR;
>+            }
>+        }
>+
>+        if (messageBodyIsOOL) {
>+            auto* descriptor = getDescriptorAndAdvance(messageData, sizeof(mach_msg_ool_descriptor_t));
>+            descriptor->out_of_line.address = encoder->buffer();
>+            descriptor->out_of_line.size = encoder->bufferSize();
>+            descriptor->out_of_line.copy = MACH_MSG_VIRTUAL_COPY;
>+            descriptor->out_of_line.deallocate = false;
>+            descriptor->out_of_line.type = MACH_MSG_OOL_DESCRIPTOR;
>+        }
>+    }
>+
>+    // Copy the data if it is not being sent out-of-line.
>+    if (!messageBodyIsOOL)
>+        memcpy(messageData, encoder->buffer(), encoder->bufferSize());
>+
>+    ASSERT(m_sendPort);
>+    ASSERT(MACH_PORT_VALID(m_sendPort));
>+
>+    return sendMessage(WTFMove(message));
>+}
>+
>+void Connection::initializeSendSource()
>+{
>+    m_sendSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_MACH_SEND, m_sendPort, DISPATCH_MACH_SEND_DEAD | DISPATCH_MACH_SEND_POSSIBLE, m_connectionQueue->dispatchQueue());
>+    m_isInitializingSendSource = true;
>+
>+    dispatch_source_set_registration_handler(m_sendSource, [this, protectedThis = makeRef(*this)] {
>+        if (!m_sendSource)
>+            return;
>+        m_isInitializingSendSource = false;
>+        resumeSendSource();
>+    });
>+    dispatch_source_set_event_handler(m_sendSource, [this, protectedThis = makeRef(*this)] {
>+        if (!m_sendSource)
>+            return;
>+
>+        unsigned long data = dispatch_source_get_data(m_sendSource);
>+
>+        if (data & DISPATCH_MACH_SEND_DEAD) {
>+            connectionDidClose();
>+            return;
>+        }
>+
>+        if (data & DISPATCH_MACH_SEND_POSSIBLE) {
>+            // FIXME: Figure out why we get spurious DISPATCH_MACH_SEND_POSSIBLE events.
>+            resumeSendSource();
>+            return;
>+        }
>+    });
>+
>+    ASSERT(MACH_PORT_VALID(m_sendPort));
>+    mach_port_t sendPort = m_sendPort;
>+    dispatch_source_set_cancel_handler(m_sendSource, ^{
>+        // Release our send right.
>+        deallocateSendRightSafely(sendPort);
>+    });
>+}
>+
>+void Connection::resumeSendSource()
>+{
>+    ASSERT(!m_isInitializingSendSource);
>+    if (m_pendingOutgoingMachMessage)
>+        sendMessage(WTFMove(m_pendingOutgoingMachMessage));
>+    sendOutgoingMessages();
>+}
>+
>+static std::unique_ptr<Decoder> createMessageDecoder(mach_msg_header_t* header)
>+{
>+    if (!(header->msgh_bits & MACH_MSGH_BITS_COMPLEX)) {
>+        // We have a simple message.
>+        uint8_t* body = reinterpret_cast<uint8_t*>(header + 1);
>+        size_t bodySize = header->msgh_size - sizeof(mach_msg_header_t);
>+
>+        return std::make_unique<Decoder>(body, bodySize, nullptr, Vector<Attachment> { });
>+    }
>+
>+    bool messageBodyIsOOL = header->msgh_id == outOfLineBodyMessageID;
>+
>+    mach_msg_body_t* body = reinterpret_cast<mach_msg_body_t*>(header + 1);
>+    mach_msg_size_t numDescriptors = body->msgh_descriptor_count;
>+    ASSERT(numDescriptors);
>+
>+    uint8_t* descriptorData = reinterpret_cast<uint8_t*>(body + 1);
>+
>+    // If the message body was sent out-of-line, don't treat the last descriptor
>+    // as an attachment, since it is really the message body.
>+    if (messageBodyIsOOL)
>+        --numDescriptors;
>+
>+    // Build attachment list
>+    Vector<Attachment> attachments(numDescriptors);
>+
>+    for (mach_msg_size_t i = 0; i < numDescriptors; ++i) {
>+        mach_msg_descriptor_t* descriptor = reinterpret_cast<mach_msg_descriptor_t*>(descriptorData);
>+        ASSERT(descriptor->type.type == MACH_MSG_PORT_DESCRIPTOR);
>+        if (descriptor->type.type != MACH_MSG_PORT_DESCRIPTOR)
>+            return nullptr;
>+
>+        attachments[numDescriptors - i - 1] = Attachment(descriptor->port.name, descriptor->port.disposition);
>+        descriptorData += sizeof(mach_msg_port_descriptor_t);
>+    }
>+
>+    if (messageBodyIsOOL) {
>+        mach_msg_descriptor_t* descriptor = reinterpret_cast<mach_msg_descriptor_t*>(descriptorData);
>+        ASSERT(descriptor->type.type == MACH_MSG_OOL_DESCRIPTOR);
>+        if (descriptor->type.type != MACH_MSG_OOL_DESCRIPTOR)
>+            return nullptr;
>+
>+        uint8_t* messageBody = static_cast<uint8_t*>(descriptor->out_of_line.address);
>+        size_t messageBodySize = descriptor->out_of_line.size;
>+
>+        return std::make_unique<Decoder>(messageBody, messageBodySize, [](const uint8_t* buffer, size_t length) {
>+            vm_deallocate(mach_task_self(), reinterpret_cast<vm_address_t>(buffer), length);
>+        }, WTFMove(attachments));
>+    }
>+
>+    uint8_t* messageBody = descriptorData;
>+    size_t messageBodySize = header->msgh_size - (descriptorData - reinterpret_cast<uint8_t*>(header));
>+
>+    return std::make_unique<Decoder>(messageBody, messageBodySize, nullptr, WTFMove(attachments));
>+}
>+
>+// The receive buffer size should always include the maximum trailer size.
>+static const size_t receiveBufferSize = inlineMessageMaxSize + MAX_TRAILER_SIZE;
>+typedef Vector<char, receiveBufferSize> ReceiveBuffer;
>+
>+static mach_msg_header_t* readFromMachPort(mach_port_t machPort, ReceiveBuffer& buffer)
>+{
>+    ASSERT(MACH_PORT_VALID(machPort));
>+
>+    buffer.resize(receiveBufferSize);
>+
>+    mach_msg_header_t* header = reinterpret_cast<mach_msg_header_t*>(buffer.data());
>+    kern_return_t kr = mach_msg(header, MACH_RCV_MSG | MACH_RCV_LARGE | MACH_RCV_TIMEOUT | MACH_RCV_VOUCHER, 0, buffer.size(), machPort, 0, MACH_PORT_NULL);
>+    if (kr == MACH_RCV_TIMED_OUT)
>+        return nullptr;
>+
>+    if (kr == MACH_RCV_TOO_LARGE) {
>+        // The message was too large, resize the buffer and try again.
>+        buffer.resize(header->msgh_size + MAX_TRAILER_SIZE);
>+        header = reinterpret_cast<mach_msg_header_t*>(buffer.data());
>+        
>+        kr = mach_msg(header, MACH_RCV_MSG | MACH_RCV_LARGE | MACH_RCV_TIMEOUT | MACH_RCV_VOUCHER, 0, buffer.size(), machPort, 0, MACH_PORT_NULL);
>+        ASSERT(kr != MACH_RCV_TOO_LARGE);
>+    }
>+
>+    if (kr != MACH_MSG_SUCCESS) {
>+#if !ASSERT_DISABLED
>+        WebKit::setCrashReportApplicationSpecificInformation((__bridge CFStringRef)[NSString stringWithFormat:@"Unhandled error code %x from mach_msg, receive port is %x", kr, machPort]);
>+#endif
>+        ASSERT_NOT_REACHED();
>+        return nullptr;
>+    }
>+
>+    return header;
>+}
>+
>+void Connection::receiveSourceEventHandler()
>+{
>+    ReceiveBuffer buffer;
>+
>+    ASSERT(MACH_PORT_VALID(m_receivePort));
>+    mach_msg_header_t* header = readFromMachPort(m_receivePort, buffer);
>+    if (!header)
>+        return;
>+
>+    switch (header->msgh_id) {
>+    case MACH_NOTIFY_NO_SENDERS:
>+        ASSERT(m_isServer);
>+        if (!m_sendPort)
>+            connectionDidClose();
>+        return;
>+
>+    case inlineBodyMessageID:
>+    case outOfLineBodyMessageID:
>+        break;
>+
>+    case MACH_NOTIFY_SEND_ONCE:
>+    default:
>+        return;
>+    }
>+
>+    std::unique_ptr<Decoder> decoder = createMessageDecoder(header);
>+    if (!decoder)
>+        return;
>+
>+#if PLATFORM(MAC)
>+    decoder->setImportanceAssertion(std::make_unique<ImportanceAssertion>(header));
>+#endif
>+
>+    if (decoder->messageReceiverName() == "IPC" && decoder->messageName() == "InitializeConnection") {
>+        ASSERT(m_isServer);
>+        ASSERT(!m_isConnected);
>+        ASSERT(!m_sendPort);
>+
>+        MachPort port;
>+        if (!decoder->decode(port)) {
>+            // FIXME: Disconnect.
>+            return;
>+        }
>+
>+        m_sendPort = port.port();
>+        
>+        if (m_sendPort) {
>+            ASSERT(MACH_PORT_VALID(m_receivePort));
>+            mach_port_t previousNotificationPort = MACH_PORT_NULL;
>+            auto kr = mach_port_request_notification(mach_task_self(), m_receivePort, MACH_NOTIFY_NO_SENDERS, 0, MACH_PORT_NULL, MACH_MSG_TYPE_MOVE_SEND_ONCE, &previousNotificationPort);
>+            ASSERT(kr == KERN_SUCCESS);
>+            if (kr != KERN_SUCCESS) {
>+                // If mach_port_request_notification fails, 'previousNotificationPort' will be uninitialized.
>+                LOG_ERROR("mach_port_request_notification failed: (%x) %s", kr, mach_error_string(kr));
>+                previousNotificationPort = MACH_PORT_NULL;
>+            }
>+
>+            if (previousNotificationPort != MACH_PORT_NULL)
>+                deallocateSendRightSafely(previousNotificationPort);
>+
>+            initializeSendSource();
>+            dispatch_resume(m_sendSource);
>+        }
>+
>+        m_isConnected = true;
>+
>+        // Send any pending outgoing messages.
>+        sendOutgoingMessages();
>+        
>+        return;
>+    }
>+
>+#if !PLATFORM(IOS_FAMILY)
>+    if (decoder->messageReceiverName() == "IPC" && decoder->messageName() == "SetExceptionPort") {
>+        if (m_isServer) {
>+            // Server connections aren't supposed to have their exception ports overridden. Treat this as an invalid message.
>+            StringReference messageReceiverNameReference = decoder->messageReceiverName();
>+            String messageReceiverName(String(messageReceiverNameReference.data(), messageReceiverNameReference.size()));
>+            StringReference messageNameReference = decoder->messageName();
>+            String messageName(String(messageNameReference.data(), messageNameReference.size()));
>+
>+            RunLoop::main().dispatch([protectedThis = makeRef(*this), messageReceiverName = WTFMove(messageReceiverName), messageName = WTFMove(messageName)]() mutable {
>+                protectedThis->dispatchDidReceiveInvalidMessage(messageReceiverName.utf8(), messageName.utf8());
>+            });
>+            return;
>+        }
>+        MachPort exceptionPort;
>+        if (!decoder->decode(exceptionPort))
>+            return;
>+
>+        setMachExceptionPort(exceptionPort.port());
>+        return;
>+    }
>+#endif
>+
>+    processIncomingMessage(WTFMove(decoder));
>+}    
>+
>+IPC::Connection::Identifier Connection::identifier() const
>+{
>+    return Identifier(m_isServer ? m_receivePort : m_sendPort, m_xpcConnection);
>+}
>+
>+Optional<audit_token_t> Connection::getAuditToken()
>+{
>+    if (!m_xpcConnection)
>+        return WTF::nullopt;
>+    
>+    audit_token_t auditToken;
>+    xpc_connection_get_audit_token(m_xpcConnection.get(), &auditToken);
>+    return WTFMove(auditToken);
>+}
>+
>+bool Connection::kill()
>+{
>+    if (m_xpcConnection) {
>+        xpc_connection_kill(m_xpcConnection.get(), SIGKILL);
>+        m_wasKilled = true;
>+        return true;
>+    }
>+
>+    return false;
>+}
>+    
>+static void AccessibilityProcessSuspendedNotification(bool suspended)
>+{
>+#if PLATFORM(MAC)
>+    _AXUIElementNotifyProcessSuspendStatus(suspended ? AXSuspendStatusSuspended : AXSuspendStatusRunning);
>+#elif PLATFORM(IOS_FAMILY)
>+    UIAccessibilityPostNotification(kAXPidStatusChangedNotification, @{ @"pid" : @(getpid()), @"suspended" : @(suspended) });
>+#else
>+    UNUSED_PARAM(suspended);
>+#endif
>+}
>+    
>+void Connection::willSendSyncMessage(OptionSet<SendSyncOption> sendSyncOptions)
>+{
>+    if (sendSyncOptions.contains(IPC::SendSyncOption::InformPlatformProcessWillSuspend) && WebCore::AXObjectCache::accessibilityEnabled())
>+        AccessibilityProcessSuspendedNotification(true);
>+}
>+
>+void Connection::didReceiveSyncReply(OptionSet<SendSyncOption> sendSyncOptions)
>+{
>+    if (sendSyncOptions.contains(IPC::SendSyncOption::InformPlatformProcessWillSuspend) && WebCore::AXObjectCache::accessibilityEnabled())
>+        AccessibilityProcessSuspendedNotification(false);
>+}
>+
>+pid_t Connection::remoteProcessID() const
>+{
>+    if (!m_xpcConnection)
>+        return 0;
>+
>+    return xpc_connection_get_pid(m_xpcConnection.get());
>+}
>+    
>+} // namespace IPC
>diff --git a/Source/WebKit/Platform/IPC/cocoa/ImportanceAssertion.h b/Source/WebKit/Platform/IPC/cocoa/ImportanceAssertion.h
>new file mode 100644
>index 0000000000000000000000000000000000000000..62bd8854475a02a84b32477e0dbf929e1748de53
>--- /dev/null
>+++ b/Source/WebKit/Platform/IPC/cocoa/ImportanceAssertion.h
>@@ -0,0 +1,63 @@
>+/*
>+ * Copyright (C) 2013 Apple Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions
>+ * are met:
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above copyright
>+ *    notice, this list of conditions and the following disclaimer in the
>+ *    documentation and/or other materials provided with the distribution.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>+ * THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#pragma once
>+
>+#if PLATFORM(MAC)
>+
>+#include <mach/message.h>
>+
>+namespace IPC {
>+
>+class ImportanceAssertion {
>+    WTF_MAKE_FAST_ALLOCATED;
>+    WTF_MAKE_NONCOPYABLE(ImportanceAssertion);
>+
>+public:
>+    explicit ImportanceAssertion(mach_msg_header_t* header)
>+        : m_voucher(0)
>+    {
>+        if (MACH_MSGH_BITS_HAS_VOUCHER(header->msgh_bits)) {
>+            m_voucher = header->msgh_voucher_port;
>+            header->msgh_voucher_port = MACH_VOUCHER_NULL;
>+            header->msgh_bits &= ~(MACH_MSGH_BITS_VOUCHER_MASK | MACH_MSGH_BITS_RAISEIMP);
>+        }
>+    }
>+
>+    ~ImportanceAssertion()
>+    {
>+        if (m_voucher) {
>+            kern_return_t kr = mach_voucher_deallocate(m_voucher);
>+            ASSERT_UNUSED(kr, !kr);
>+        }
>+    }
>+
>+private:
>+    mach_voucher_t m_voucher;
>+};
>+
>+}
>+
>+#endif // PLATFORM(MAC)
>diff --git a/Source/WebKit/Platform/IPC/cocoa/MachMessage.cpp b/Source/WebKit/Platform/IPC/cocoa/MachMessage.cpp
>new file mode 100644
>index 0000000000000000000000000000000000000000..ec84c96a139af805f13f07ac7cbe024b0f53da23
>--- /dev/null
>+++ b/Source/WebKit/Platform/IPC/cocoa/MachMessage.cpp
>@@ -0,0 +1,74 @@
>+/*
>+ * Copyright (C) 2016 Apple Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions
>+ * are met:
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above copyright
>+ *    notice, this list of conditions and the following disclaimer in the
>+ *    documentation and/or other materials provided with the distribution.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>+ * THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#include "config.h"
>+#include "MachMessage.h"
>+
>+#if PLATFORM(COCOA)
>+
>+#include <mach/mach.h>
>+
>+namespace IPC {
>+
>+std::unique_ptr<MachMessage> MachMessage::create(CString&& messageReceiverName, CString&& messageName, size_t size)
>+{
>+    void* memory = WTF::fastZeroedMalloc(sizeof(MachMessage) + size);
>+    return std::unique_ptr<MachMessage> { new (NotNull, memory) MachMessage { WTFMove(messageReceiverName), WTFMove(messageName), size } };
>+}
>+
>+MachMessage::MachMessage(CString&& messageReceiverName, CString&& messageName, size_t size)
>+    : m_messageReceiverName(WTFMove(messageReceiverName))
>+    , m_messageName(WTFMove(messageName))
>+    , m_size { size }
>+{
>+}
>+
>+MachMessage::~MachMessage()
>+{
>+    if (m_shouldFreeDescriptors)
>+        ::mach_msg_destroy(header());
>+}
>+
>+size_t MachMessage::messageSize(size_t bodySize, size_t portDescriptorCount, size_t memoryDescriptorCount)
>+{
>+    size_t messageSize = sizeof(mach_msg_header_t) + bodySize;
>+
>+    if (portDescriptorCount || memoryDescriptorCount) {
>+        messageSize += sizeof(mach_msg_body_t);
>+        messageSize += (portDescriptorCount * sizeof(mach_msg_port_descriptor_t));
>+        messageSize += (memoryDescriptorCount * sizeof(mach_msg_ool_descriptor_t));
>+    }
>+
>+    return round_msg(messageSize);
>+}
>+
>+void MachMessage::leakDescriptors()
>+{
>+    m_shouldFreeDescriptors = false;
>+}
>+
>+}
>+
>+#endif // PLATFORM(COCOA)
>diff --git a/Source/WebKit/Platform/IPC/cocoa/MachMessage.h b/Source/WebKit/Platform/IPC/cocoa/MachMessage.h
>new file mode 100644
>index 0000000000000000000000000000000000000000..d0131c7f0d3efa38af4054e276d4fc286c93442c
>--- /dev/null
>+++ b/Source/WebKit/Platform/IPC/cocoa/MachMessage.h
>@@ -0,0 +1,64 @@
>+/*
>+ * Copyright (C) 2016 Apple Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions
>+ * are met:
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above copyright
>+ *    notice, this list of conditions and the following disclaimer in the
>+ *    documentation and/or other materials provided with the distribution.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>+ * THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#pragma once
>+
>+#if PLATFORM(COCOA)
>+
>+#include <mach/message.h>
>+#include <memory>
>+#include <wtf/text/CString.h>
>+
>+namespace IPC {
>+
>+class MachMessage {
>+    WTF_MAKE_FAST_ALLOCATED;
>+public:
>+    static std::unique_ptr<MachMessage> create(CString&& messageReceiverName, CString&& messageName, size_t);
>+    ~MachMessage();
>+
>+    static size_t messageSize(size_t bodySize, size_t portDescriptorCount, size_t memoryDescriptorCount);
>+
>+    size_t size() const { return m_size; }
>+    mach_msg_header_t* header() { return m_messageHeader; }
>+
>+    void leakDescriptors();
>+
>+    const CString& messageReceiverName() const { return m_messageReceiverName; }
>+    const CString& messageName() const { return m_messageName; }
>+
>+private:
>+    MachMessage(CString&& messageReceiverName, CString&& messageName, size_t);
>+
>+    CString m_messageReceiverName;
>+    CString m_messageName;
>+    size_t m_size;
>+    bool m_shouldFreeDescriptors { true };
>+    mach_msg_header_t m_messageHeader[];
>+};
>+
>+}
>+
>+#endif // PLATFORM(COCOA)
>diff --git a/Source/WebKit/Platform/IPC/cocoa/MachPort.h b/Source/WebKit/Platform/IPC/cocoa/MachPort.h
>new file mode 100644
>index 0000000000000000000000000000000000000000..0d0c364082377eca36e33b8fcb851cb67590ac4f
>--- /dev/null
>+++ b/Source/WebKit/Platform/IPC/cocoa/MachPort.h
>@@ -0,0 +1,72 @@
>+/*
>+ * Copyright (C) 2010 Apple Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions
>+ * are met:
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above copyright
>+ *    notice, this list of conditions and the following disclaimer in the
>+ *    documentation and/or other materials provided with the distribution.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>+ * THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#pragma once
>+
>+#include "Attachment.h"
>+#include "Decoder.h"
>+#include "Encoder.h"
>+
>+namespace IPC {
>+
>+class MachPort {
>+public:
>+    MachPort()
>+        : m_port(MACH_PORT_NULL)
>+        , m_disposition(0)
>+    {
>+    }
>+
>+    MachPort(mach_port_name_t port, mach_msg_type_name_t disposition)
>+        : m_port(port)
>+        , m_disposition(disposition)
>+    {
>+    }
>+
>+    void encode(Encoder& encoder) const
>+    {
>+        encoder << Attachment(m_port, m_disposition);
>+    }
>+
>+    static bool decode(Decoder& decoder, MachPort& p)
>+    {
>+        Attachment attachment;
>+        if (!decoder.decode(attachment))
>+            return false;
>+        
>+        p.m_port = attachment.port();
>+        p.m_disposition = attachment.disposition();
>+        return true;
>+    }
>+
>+    mach_port_name_t port() const { return m_port; }
>+    mach_msg_type_name_t disposition() const { return m_disposition; }
>+
>+private:
>+    mach_port_name_t m_port;
>+    mach_msg_type_name_t m_disposition;
>+};
>+
>+} // namespace IPC
>diff --git a/Source/WebKit/Platform/IPC/mac/ConnectionMac.mm b/Source/WebKit/Platform/IPC/mac/ConnectionMac.mm
>deleted file mode 100644
>index dc5f11c0cacd9a7d872988624cb29453013235ba..0000000000000000000000000000000000000000
>--- a/Source/WebKit/Platform/IPC/mac/ConnectionMac.mm
>+++ /dev/null
>@@ -1,654 +0,0 @@
>-/*
>- * Copyright (C) 2010-2018 Apple Inc. All rights reserved.
>- *
>- * Redistribution and use in source and binary forms, with or without
>- * modification, are permitted provided that the following conditions
>- * are met:
>- * 1. Redistributions of source code must retain the above copyright
>- *    notice, this list of conditions and the following disclaimer.
>- * 2. Redistributions in binary form must reproduce the above copyright
>- *    notice, this list of conditions and the following disclaimer in the
>- *    documentation and/or other materials provided with the distribution.
>- *
>- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>- * THE POSSIBILITY OF SUCH DAMAGE.
>- */
>-
>-#import "config.h"
>-#import "Connection.h"
>-
>-#import "DataReference.h"
>-#import "ImportanceAssertion.h"
>-#import "MachMessage.h"
>-#import "MachPort.h"
>-#import "MachUtilities.h"
>-#import "WKCrashReporter.h"
>-#import <WebCore/AXObjectCache.h>
>-#import <mach/mach_error.h>
>-#import <mach/vm_map.h>
>-#import <sys/mman.h>
>-#import <wtf/MachSendRight.h>
>-#import <wtf/RunLoop.h>
>-#import <wtf/spi/darwin/XPCSPI.h>
>-
>-#if PLATFORM(IOS_FAMILY)
>-#import "ProcessAssertion.h"
>-#import <UIKit/UIAccessibility.h>
>-
>-#if USE(APPLE_INTERNAL_SDK)
>-#import <AXRuntime/AXDefines.h>
>-#import <AXRuntime/AXNotificationConstants.h>
>-#else
>-#define kAXPidStatusChangedNotification 0
>-#endif
>-
>-#endif
>-
>-#if PLATFORM(MAC)
>-
>-#if USE(APPLE_INTERNAL_SDK)
>-#import <ApplicationServices/ApplicationServicesPriv.h>
>-#else
>-typedef enum {
>-    AXSuspendStatusRunning = 0,
>-    AXSuspendStatusSuspended,
>-} AXSuspendStatus;
>-#endif
>-
>-extern "C" AXError _AXUIElementNotifyProcessSuspendStatus(AXSuspendStatus);
>-
>-#endif // PLATFORM(MAC)
>-
>-namespace IPC {
>-
>-static const size_t inlineMessageMaxSize = 4096;
>-
>-// Arbitrary message IDs that do not collide with Mach notification messages (used my initials).
>-constexpr mach_msg_id_t inlineBodyMessageID = 0xdba0dba;
>-constexpr mach_msg_id_t outOfLineBodyMessageID = 0xdba1dba;
>-
>-// ConnectionTerminationWatchdog does two things:
>-// 1) It sets a watchdog timer to kill the peered process.
>-// 2) On iOS, make the process runnable for the duration of the watchdog
>-//    to ensure it has a chance to terminate cleanly.
>-class ConnectionTerminationWatchdog {
>-public:
>-    static void createConnectionTerminationWatchdog(OSObjectPtr<xpc_connection_t>& xpcConnection, Seconds interval)
>-    {
>-        new ConnectionTerminationWatchdog(xpcConnection, interval);
>-    }
>-    
>-private:
>-    ConnectionTerminationWatchdog(OSObjectPtr<xpc_connection_t>& xpcConnection, Seconds interval)
>-        : m_xpcConnection(xpcConnection)
>-        , m_watchdogTimer(RunLoop::main(), this, &ConnectionTerminationWatchdog::watchdogTimerFired)
>-#if PLATFORM(IOS_FAMILY)
>-        , m_assertion(std::make_unique<WebKit::ProcessAndUIAssertion>(xpc_connection_get_pid(m_xpcConnection.get()), "ConnectionTerminationWatchdog"_s, WebKit::AssertionState::Background))
>-#endif
>-    {
>-        m_watchdogTimer.startOneShot(interval);
>-    }
>-    
>-    void watchdogTimerFired()
>-    {
>-        xpc_connection_kill(m_xpcConnection.get(), SIGKILL);
>-        delete this;
>-    }
>-
>-    OSObjectPtr<xpc_connection_t> m_xpcConnection;
>-    RunLoop::Timer<ConnectionTerminationWatchdog> m_watchdogTimer;
>-#if PLATFORM(IOS_FAMILY)
>-    std::unique_ptr<WebKit::ProcessAndUIAssertion> m_assertion;
>-#endif
>-};
>-    
>-void Connection::platformInvalidate()
>-{
>-    if (!m_isConnected) {
>-        if (m_sendPort) {
>-            ASSERT(!m_isServer);
>-            deallocateSendRightSafely(m_sendPort);
>-            m_sendPort = MACH_PORT_NULL;
>-        }
>-
>-        if (m_receiveSource) {
>-            // For a short period of time, when m_isServer is true and open() has been called, m_receiveSource has been initialized
>-            // but m_isConnected has not been set to true yet. In this case, we need to cancel m_receiveSource instead of destroying
>-            // m_receivePort ourselves.
>-            ASSERT(m_isServer);
>-            cancelReceiveSource();
>-        }
>-
>-        if (m_receivePort) {
>-            ASSERT(m_isServer);
>-#if !PLATFORM(WATCHOS)
>-            mach_port_unguard(mach_task_self(), m_receivePort, reinterpret_cast<mach_port_context_t>(this));
>-#endif
>-            mach_port_mod_refs(mach_task_self(), m_receivePort, MACH_PORT_RIGHT_RECEIVE, -1);
>-            m_receivePort = MACH_PORT_NULL;
>-        }
>-
>-        return;
>-    }
>-
>-    m_pendingOutgoingMachMessage = nullptr;
>-    m_isInitializingSendSource = false;
>-    m_isConnected = false;
>-
>-    ASSERT(m_sendPort);
>-    ASSERT(m_receivePort);
>-
>-    // Unregister our ports.
>-    dispatch_source_cancel(m_sendSource);
>-    dispatch_release(m_sendSource);
>-    m_sendSource = nullptr;
>-    m_sendPort = MACH_PORT_NULL;
>-
>-    cancelReceiveSource();
>-}
>-
>-void Connection::cancelReceiveSource()
>-{
>-    dispatch_source_cancel(m_receiveSource);
>-    dispatch_release(m_receiveSource);
>-    m_receiveSource = nullptr;
>-    m_receivePort = MACH_PORT_NULL;
>-}
>-    
>-void Connection::terminateSoon(Seconds interval)
>-{
>-    if (m_xpcConnection)
>-        ConnectionTerminationWatchdog::createConnectionTerminationWatchdog(m_xpcConnection, interval);
>-}
>-    
>-void Connection::platformInitialize(Identifier identifier)
>-{
>-    if (!MACH_PORT_VALID(identifier.port))
>-        return;
>-
>-    if (m_isServer) {
>-        m_receivePort = identifier.port;
>-        m_sendPort = MACH_PORT_NULL;
>-
>-#if !PLATFORM(WATCHOS)
>-        mach_port_guard(mach_task_self(), m_receivePort, reinterpret_cast<mach_port_context_t>(this), true);
>-#endif
>-    } else {
>-        m_receivePort = MACH_PORT_NULL;
>-        m_sendPort = identifier.port;
>-    }
>-
>-    m_sendSource = nullptr;
>-    m_receiveSource = nullptr;
>-
>-    m_xpcConnection = identifier.xpcConnection;
>-}
>-
>-bool Connection::open()
>-{
>-    if (m_isServer) {
>-        ASSERT(m_receivePort);
>-        ASSERT(!m_sendPort);
>-        ASSERT(MACH_PORT_VALID(m_receivePort));
>-    } else {
>-        ASSERT(!m_receivePort);
>-        ASSERT(m_sendPort);
>-        ASSERT(MACH_PORT_VALID(m_sendPort));
>-
>-        auto kr = mach_port_allocate(mach_task_self(), MACH_PORT_RIGHT_RECEIVE, &m_receivePort);
>-        if (kr != KERN_SUCCESS) {
>-            LOG_ERROR("Could not allocate mach port, error %x: %s", kr, mach_error_string(kr));
>-            CRASH();
>-        }
>-#if !PLATFORM(WATCHOS)
>-        mach_port_guard(mach_task_self(), m_receivePort, reinterpret_cast<mach_port_context_t>(this), true);
>-#endif
>-
>-#if PLATFORM(MAC)
>-        mach_port_set_attributes(mach_task_self(), m_receivePort, MACH_PORT_DENAP_RECEIVER, (mach_port_info_t)0, 0);
>-#endif
>-
>-        m_isConnected = true;
>-        
>-        // Send the initialize message, which contains a send right for the server to use.
>-        auto encoder = std::make_unique<Encoder>("IPC", "InitializeConnection", 0);
>-        encoder->encode(MachPort(m_receivePort, MACH_MSG_TYPE_MAKE_SEND));
>-
>-        initializeSendSource();
>-
>-        sendMessage(WTFMove(encoder), { });
>-    }
>-
>-    // Change the message queue length for the receive port.
>-    setMachPortQueueLength(m_receivePort, MACH_PORT_QLIMIT_LARGE);
>-
>-    RefPtr<Connection> connection(this);
>-    m_receiveSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_MACH_RECV, m_receivePort, 0, m_connectionQueue->dispatchQueue());
>-    dispatch_source_set_event_handler(m_receiveSource, [connection] {
>-        connection->receiveSourceEventHandler();
>-    });
>-    dispatch_source_set_cancel_handler(m_receiveSource, [connection, receivePort = m_receivePort] {
>-#if PLATFORM(WATCHOS)
>-        UNUSED_PARAM(connection);
>-#else
>-        mach_port_unguard(mach_task_self(), receivePort, reinterpret_cast<mach_port_context_t>(connection.get()));
>-#endif
>-        mach_port_mod_refs(mach_task_self(), receivePort, MACH_PORT_RIGHT_RECEIVE, -1);
>-    });
>-
>-    ref();
>-    dispatch_async(m_connectionQueue->dispatchQueue(), ^{
>-        dispatch_resume(m_receiveSource);
>-
>-        if (m_sendSource)
>-            dispatch_resume(m_sendSource);
>-
>-        deref();
>-    });
>-
>-    return true;
>-}
>-
>-bool Connection::sendMessage(std::unique_ptr<MachMessage> message)
>-{
>-    ASSERT(message);
>-    ASSERT(!m_pendingOutgoingMachMessage);
>-    ASSERT(!m_isInitializingSendSource);
>-
>-    // Send the message.
>-    kern_return_t kr = mach_msg(message->header(), MACH_SEND_MSG | MACH_SEND_TIMEOUT | MACH_SEND_NOTIFY, message->size(), 0, MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
>-    switch (kr) {
>-    case MACH_MSG_SUCCESS:
>-        // The kernel has already adopted the descriptors.
>-        message->leakDescriptors();
>-        return true;
>-
>-    case MACH_SEND_TIMED_OUT:
>-        // We timed out, stash away the message for later.
>-        m_pendingOutgoingMachMessage = WTFMove(message);
>-        return false;
>-
>-    case MACH_SEND_INVALID_DEST:
>-        // The other end has disappeared, we'll get a dead name notification which will cause us to be invalidated.
>-        return false;
>-
>-    default:
>-        WebKit::setCrashReportApplicationSpecificInformation((__bridge CFStringRef)[NSString stringWithFormat:@"Unhandled error code %x, message '%s::%s'", kr, message->messageReceiverName().data(), message->messageName().data()]);
>-        CRASH();
>-    }
>-}
>-
>-bool Connection::platformCanSendOutgoingMessages() const
>-{
>-    return !m_pendingOutgoingMachMessage && !m_isInitializingSendSource;
>-}
>-
>-bool Connection::sendOutgoingMessage(std::unique_ptr<Encoder> encoder)
>-{
>-    ASSERT(!m_pendingOutgoingMachMessage && !m_isInitializingSendSource);
>-
>-    auto attachments = encoder->releaseAttachments();
>-    
>-    auto numberOfPortDescriptors = std::count_if(attachments.begin(), attachments.end(), [](auto& attachment) { return attachment.type() == Attachment::MachPortType; });
>-    bool messageBodyIsOOL = false;
>-    auto messageSize = MachMessage::messageSize(encoder->bufferSize(), numberOfPortDescriptors, messageBodyIsOOL);
>-    if (messageSize > inlineMessageMaxSize) {
>-        messageBodyIsOOL = true;
>-        messageSize = MachMessage::messageSize(0, numberOfPortDescriptors, messageBodyIsOOL);
>-    }
>-
>-    auto message = MachMessage::create(encoder->messageReceiverName().toString(), encoder->messageName().toString(), messageSize);
>-
>-    auto* header = message->header();
>-    header->msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, 0);
>-    header->msgh_size = messageSize;
>-    header->msgh_remote_port = m_sendPort;
>-    header->msgh_local_port = MACH_PORT_NULL;
>-    header->msgh_id = messageBodyIsOOL ? outOfLineBodyMessageID : inlineBodyMessageID;
>-
>-    auto* messageData = reinterpret_cast<uint8_t*>(header + 1);
>-
>-    bool isComplex = numberOfPortDescriptors || messageBodyIsOOL;
>-    if (isComplex) {
>-        header->msgh_bits |= MACH_MSGH_BITS_COMPLEX;
>-
>-        auto* body = reinterpret_cast<mach_msg_body_t*>(messageData);
>-        body->msgh_descriptor_count = numberOfPortDescriptors + messageBodyIsOOL;
>-        messageData = reinterpret_cast<uint8_t*>(body + 1);
>-
>-        auto getDescriptorAndAdvance = [](uint8_t*& data, std::size_t toAdvance) {
>-            return reinterpret_cast<mach_msg_descriptor_t*>(std::exchange(data, data + toAdvance));
>-        };
>-
>-        for (auto& attachment : attachments) {
>-            ASSERT(attachment.type() == Attachment::MachPortType);
>-            if (attachment.type() == Attachment::MachPortType) {
>-                auto* descriptor = getDescriptorAndAdvance(messageData, sizeof(mach_msg_port_descriptor_t));
>-                descriptor->port.name = attachment.port();
>-                descriptor->port.disposition = attachment.disposition();
>-                descriptor->port.type = MACH_MSG_PORT_DESCRIPTOR;
>-            }
>-        }
>-
>-        if (messageBodyIsOOL) {
>-            auto* descriptor = getDescriptorAndAdvance(messageData, sizeof(mach_msg_ool_descriptor_t));
>-            descriptor->out_of_line.address = encoder->buffer();
>-            descriptor->out_of_line.size = encoder->bufferSize();
>-            descriptor->out_of_line.copy = MACH_MSG_VIRTUAL_COPY;
>-            descriptor->out_of_line.deallocate = false;
>-            descriptor->out_of_line.type = MACH_MSG_OOL_DESCRIPTOR;
>-        }
>-    }
>-
>-    // Copy the data if it is not being sent out-of-line.
>-    if (!messageBodyIsOOL)
>-        memcpy(messageData, encoder->buffer(), encoder->bufferSize());
>-
>-    ASSERT(m_sendPort);
>-    ASSERT(MACH_PORT_VALID(m_sendPort));
>-
>-    return sendMessage(WTFMove(message));
>-}
>-
>-void Connection::initializeSendSource()
>-{
>-    m_sendSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_MACH_SEND, m_sendPort, DISPATCH_MACH_SEND_DEAD | DISPATCH_MACH_SEND_POSSIBLE, m_connectionQueue->dispatchQueue());
>-    m_isInitializingSendSource = true;
>-
>-    RefPtr<Connection> connection(this);
>-    dispatch_source_set_registration_handler(m_sendSource, [connection] {
>-        if (!connection->m_sendSource)
>-            return;
>-        connection->m_isInitializingSendSource = false;
>-        connection->resumeSendSource();
>-    });
>-    dispatch_source_set_event_handler(m_sendSource, [connection] {
>-        if (!connection->m_sendSource)
>-            return;
>-
>-        unsigned long data = dispatch_source_get_data(connection->m_sendSource);
>-
>-        if (data & DISPATCH_MACH_SEND_DEAD) {
>-            connection->connectionDidClose();
>-            return;
>-        }
>-
>-        if (data & DISPATCH_MACH_SEND_POSSIBLE) {
>-            // FIXME: Figure out why we get spurious DISPATCH_MACH_SEND_POSSIBLE events.
>-            connection->resumeSendSource();
>-            return;
>-        }
>-    });
>-
>-    ASSERT(MACH_PORT_VALID(m_sendPort));
>-    mach_port_t sendPort = m_sendPort;
>-    dispatch_source_set_cancel_handler(m_sendSource, ^{
>-        // Release our send right.
>-        deallocateSendRightSafely(sendPort);
>-    });
>-}
>-
>-void Connection::resumeSendSource()
>-{
>-    ASSERT(!m_isInitializingSendSource);
>-    if (m_pendingOutgoingMachMessage)
>-        sendMessage(WTFMove(m_pendingOutgoingMachMessage));
>-    sendOutgoingMessages();
>-}
>-
>-static std::unique_ptr<Decoder> createMessageDecoder(mach_msg_header_t* header)
>-{
>-    if (!(header->msgh_bits & MACH_MSGH_BITS_COMPLEX)) {
>-        // We have a simple message.
>-        uint8_t* body = reinterpret_cast<uint8_t*>(header + 1);
>-        size_t bodySize = header->msgh_size - sizeof(mach_msg_header_t);
>-
>-        return std::make_unique<Decoder>(body, bodySize, nullptr, Vector<Attachment> { });
>-    }
>-
>-    bool messageBodyIsOOL = header->msgh_id == outOfLineBodyMessageID;
>-
>-    mach_msg_body_t* body = reinterpret_cast<mach_msg_body_t*>(header + 1);
>-    mach_msg_size_t numDescriptors = body->msgh_descriptor_count;
>-    ASSERT(numDescriptors);
>-
>-    uint8_t* descriptorData = reinterpret_cast<uint8_t*>(body + 1);
>-
>-    // If the message body was sent out-of-line, don't treat the last descriptor
>-    // as an attachment, since it is really the message body.
>-    if (messageBodyIsOOL)
>-        --numDescriptors;
>-
>-    // Build attachment list
>-    Vector<Attachment> attachments(numDescriptors);
>-
>-    for (mach_msg_size_t i = 0; i < numDescriptors; ++i) {
>-        mach_msg_descriptor_t* descriptor = reinterpret_cast<mach_msg_descriptor_t*>(descriptorData);
>-        ASSERT(descriptor->type.type == MACH_MSG_PORT_DESCRIPTOR);
>-        if (descriptor->type.type != MACH_MSG_PORT_DESCRIPTOR)
>-            return nullptr;
>-
>-        attachments[numDescriptors - i - 1] = Attachment(descriptor->port.name, descriptor->port.disposition);
>-        descriptorData += sizeof(mach_msg_port_descriptor_t);
>-    }
>-
>-    if (messageBodyIsOOL) {
>-        mach_msg_descriptor_t* descriptor = reinterpret_cast<mach_msg_descriptor_t*>(descriptorData);
>-        ASSERT(descriptor->type.type == MACH_MSG_OOL_DESCRIPTOR);
>-        if (descriptor->type.type != MACH_MSG_OOL_DESCRIPTOR)
>-            return nullptr;
>-
>-        uint8_t* messageBody = static_cast<uint8_t*>(descriptor->out_of_line.address);
>-        size_t messageBodySize = descriptor->out_of_line.size;
>-
>-        return std::make_unique<Decoder>(messageBody, messageBodySize, [](const uint8_t* buffer, size_t length) {
>-            vm_deallocate(mach_task_self(), reinterpret_cast<vm_address_t>(buffer), length);
>-        }, WTFMove(attachments));
>-    }
>-
>-    uint8_t* messageBody = descriptorData;
>-    size_t messageBodySize = header->msgh_size - (descriptorData - reinterpret_cast<uint8_t*>(header));
>-
>-    return std::make_unique<Decoder>(messageBody, messageBodySize, nullptr, WTFMove(attachments));
>-}
>-
>-// The receive buffer size should always include the maximum trailer size.
>-static const size_t receiveBufferSize = inlineMessageMaxSize + MAX_TRAILER_SIZE;
>-typedef Vector<char, receiveBufferSize> ReceiveBuffer;
>-
>-static mach_msg_header_t* readFromMachPort(mach_port_t machPort, ReceiveBuffer& buffer)
>-{
>-    ASSERT(MACH_PORT_VALID(machPort));
>-
>-    buffer.resize(receiveBufferSize);
>-
>-    mach_msg_header_t* header = reinterpret_cast<mach_msg_header_t*>(buffer.data());
>-    kern_return_t kr = mach_msg(header, MACH_RCV_MSG | MACH_RCV_LARGE | MACH_RCV_TIMEOUT | MACH_RCV_VOUCHER, 0, buffer.size(), machPort, 0, MACH_PORT_NULL);
>-    if (kr == MACH_RCV_TIMED_OUT)
>-        return nullptr;
>-
>-    if (kr == MACH_RCV_TOO_LARGE) {
>-        // The message was too large, resize the buffer and try again.
>-        buffer.resize(header->msgh_size + MAX_TRAILER_SIZE);
>-        header = reinterpret_cast<mach_msg_header_t*>(buffer.data());
>-        
>-        kr = mach_msg(header, MACH_RCV_MSG | MACH_RCV_LARGE | MACH_RCV_TIMEOUT | MACH_RCV_VOUCHER, 0, buffer.size(), machPort, 0, MACH_PORT_NULL);
>-        ASSERT(kr != MACH_RCV_TOO_LARGE);
>-    }
>-
>-    if (kr != MACH_MSG_SUCCESS) {
>-#if !ASSERT_DISABLED
>-        WebKit::setCrashReportApplicationSpecificInformation((__bridge CFStringRef)[NSString stringWithFormat:@"Unhandled error code %x from mach_msg, receive port is %x", kr, machPort]);
>-#endif
>-        ASSERT_NOT_REACHED();
>-        return nullptr;
>-    }
>-
>-    return header;
>-}
>-
>-void Connection::receiveSourceEventHandler()
>-{
>-    ReceiveBuffer buffer;
>-
>-    ASSERT(MACH_PORT_VALID(m_receivePort));
>-    mach_msg_header_t* header = readFromMachPort(m_receivePort, buffer);
>-    if (!header)
>-        return;
>-
>-    switch (header->msgh_id) {
>-    case MACH_NOTIFY_NO_SENDERS:
>-        ASSERT(m_isServer);
>-        if (!m_sendPort)
>-            connectionDidClose();
>-        return;
>-
>-    case inlineBodyMessageID:
>-    case outOfLineBodyMessageID:
>-        break;
>-
>-    case MACH_NOTIFY_SEND_ONCE:
>-    default:
>-        return;
>-    }
>-
>-    std::unique_ptr<Decoder> decoder = createMessageDecoder(header);
>-    if (!decoder)
>-        return;
>-
>-#if PLATFORM(MAC)
>-    decoder->setImportanceAssertion(std::make_unique<ImportanceAssertion>(header));
>-#endif
>-
>-    if (decoder->messageReceiverName() == "IPC" && decoder->messageName() == "InitializeConnection") {
>-        ASSERT(m_isServer);
>-        ASSERT(!m_isConnected);
>-        ASSERT(!m_sendPort);
>-
>-        MachPort port;
>-        if (!decoder->decode(port)) {
>-            // FIXME: Disconnect.
>-            return;
>-        }
>-
>-        m_sendPort = port.port();
>-        
>-        if (m_sendPort) {
>-            ASSERT(MACH_PORT_VALID(m_receivePort));
>-            mach_port_t previousNotificationPort = MACH_PORT_NULL;
>-            auto kr = mach_port_request_notification(mach_task_self(), m_receivePort, MACH_NOTIFY_NO_SENDERS, 0, MACH_PORT_NULL, MACH_MSG_TYPE_MOVE_SEND_ONCE, &previousNotificationPort);
>-            ASSERT(kr == KERN_SUCCESS);
>-            if (kr != KERN_SUCCESS) {
>-                // If mach_port_request_notification fails, 'previousNotificationPort' will be uninitialized.
>-                LOG_ERROR("mach_port_request_notification failed: (%x) %s", kr, mach_error_string(kr));
>-                previousNotificationPort = MACH_PORT_NULL;
>-            }
>-
>-            if (previousNotificationPort != MACH_PORT_NULL)
>-                deallocateSendRightSafely(previousNotificationPort);
>-
>-            initializeSendSource();
>-            dispatch_resume(m_sendSource);
>-        }
>-
>-        m_isConnected = true;
>-
>-        // Send any pending outgoing messages.
>-        sendOutgoingMessages();
>-        
>-        return;
>-    }
>-
>-#if !PLATFORM(IOS_FAMILY)
>-    if (decoder->messageReceiverName() == "IPC" && decoder->messageName() == "SetExceptionPort") {
>-        if (m_isServer) {
>-            // Server connections aren't supposed to have their exception ports overridden. Treat this as an invalid message.
>-            StringReference messageReceiverNameReference = decoder->messageReceiverName();
>-            String messageReceiverName(String(messageReceiverNameReference.data(), messageReceiverNameReference.size()));
>-            StringReference messageNameReference = decoder->messageName();
>-            String messageName(String(messageNameReference.data(), messageNameReference.size()));
>-
>-            RunLoop::main().dispatch([protectedThis = makeRef(*this), messageReceiverName = WTFMove(messageReceiverName), messageName = WTFMove(messageName)]() mutable {
>-                protectedThis->dispatchDidReceiveInvalidMessage(messageReceiverName.utf8(), messageName.utf8());
>-            });
>-            return;
>-        }
>-        MachPort exceptionPort;
>-        if (!decoder->decode(exceptionPort))
>-            return;
>-
>-        setMachExceptionPort(exceptionPort.port());
>-        return;
>-    }
>-#endif
>-
>-    processIncomingMessage(WTFMove(decoder));
>-}    
>-
>-IPC::Connection::Identifier Connection::identifier() const
>-{
>-    return Identifier(m_isServer ? m_receivePort : m_sendPort, m_xpcConnection);
>-}
>-
>-Optional<audit_token_t> Connection::getAuditToken()
>-{
>-    if (!m_xpcConnection)
>-        return WTF::nullopt;
>-    
>-    audit_token_t auditToken;
>-    xpc_connection_get_audit_token(m_xpcConnection.get(), &auditToken);
>-    return WTFMove(auditToken);
>-}
>-
>-bool Connection::kill()
>-{
>-    if (m_xpcConnection) {
>-        xpc_connection_kill(m_xpcConnection.get(), SIGKILL);
>-        m_wasKilled = true;
>-        return true;
>-    }
>-
>-    return false;
>-}
>-    
>-static void AccessibilityProcessSuspendedNotification(bool suspended)
>-{
>-#if PLATFORM(MAC)
>-    _AXUIElementNotifyProcessSuspendStatus(suspended ? AXSuspendStatusSuspended : AXSuspendStatusRunning);
>-#elif PLATFORM(IOS_FAMILY)
>-    UIAccessibilityPostNotification(kAXPidStatusChangedNotification, @{ @"pid" : @(getpid()), @"suspended" : @(suspended) });
>-#else
>-    UNUSED_PARAM(suspended);
>-#endif
>-}
>-    
>-void Connection::willSendSyncMessage(OptionSet<SendSyncOption> sendSyncOptions)
>-{
>-    if (sendSyncOptions.contains(IPC::SendSyncOption::InformPlatformProcessWillSuspend) && WebCore::AXObjectCache::accessibilityEnabled())
>-        AccessibilityProcessSuspendedNotification(true);
>-}
>-
>-void Connection::didReceiveSyncReply(OptionSet<SendSyncOption> sendSyncOptions)
>-{
>-    if (sendSyncOptions.contains(IPC::SendSyncOption::InformPlatformProcessWillSuspend) && WebCore::AXObjectCache::accessibilityEnabled())
>-        AccessibilityProcessSuspendedNotification(false);
>-}
>-
>-pid_t Connection::remoteProcessID() const
>-{
>-    if (!m_xpcConnection)
>-        return 0;
>-
>-    return xpc_connection_get_pid(m_xpcConnection.get());
>-}
>-    
>-} // namespace IPC
>diff --git a/Source/WebKit/Platform/IPC/mac/ImportanceAssertion.h b/Source/WebKit/Platform/IPC/mac/ImportanceAssertion.h
>deleted file mode 100644
>index 6f90b0434182bd0851ea9464830e82662b68b144..0000000000000000000000000000000000000000
>--- a/Source/WebKit/Platform/IPC/mac/ImportanceAssertion.h
>+++ /dev/null
>@@ -1,66 +0,0 @@
>-/*
>- * Copyright (C) 2013 Apple Inc. All rights reserved.
>- *
>- * Redistribution and use in source and binary forms, with or without
>- * modification, are permitted provided that the following conditions
>- * are met:
>- * 1. Redistributions of source code must retain the above copyright
>- *    notice, this list of conditions and the following disclaimer.
>- * 2. Redistributions in binary form must reproduce the above copyright
>- *    notice, this list of conditions and the following disclaimer in the
>- *    documentation and/or other materials provided with the distribution.
>- *
>- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>- * THE POSSIBILITY OF SUCH DAMAGE.
>- */
>-
>-#ifndef ImportanceAssertion_h
>-#define ImportanceAssertion_h
>-
>-#if PLATFORM(MAC)
>-
>-#include <mach/message.h>
>-
>-namespace IPC {
>-
>-class ImportanceAssertion {
>-    WTF_MAKE_FAST_ALLOCATED;
>-    WTF_MAKE_NONCOPYABLE(ImportanceAssertion);
>-
>-public:
>-    explicit ImportanceAssertion(mach_msg_header_t* header)
>-        : m_voucher(0)
>-    {
>-        if (MACH_MSGH_BITS_HAS_VOUCHER(header->msgh_bits)) {
>-            m_voucher = header->msgh_voucher_port;
>-            header->msgh_voucher_port = MACH_VOUCHER_NULL;
>-            header->msgh_bits &= ~(MACH_MSGH_BITS_VOUCHER_MASK | MACH_MSGH_BITS_RAISEIMP);
>-        }
>-    }
>-
>-    ~ImportanceAssertion()
>-    {
>-        if (m_voucher) {
>-            kern_return_t kr = mach_voucher_deallocate(m_voucher);
>-            ASSERT_UNUSED(kr, !kr);
>-        }
>-    }
>-
>-private:
>-    mach_voucher_t m_voucher;
>-};
>-
>-}
>-
>-#endif // PLATFORM(MAC)
>-
>-#endif // ImportanceAssertion_h
>diff --git a/Source/WebKit/Platform/IPC/mac/MachMessage.cpp b/Source/WebKit/Platform/IPC/mac/MachMessage.cpp
>deleted file mode 100644
>index ec84c96a139af805f13f07ac7cbe024b0f53da23..0000000000000000000000000000000000000000
>--- a/Source/WebKit/Platform/IPC/mac/MachMessage.cpp
>+++ /dev/null
>@@ -1,74 +0,0 @@
>-/*
>- * Copyright (C) 2016 Apple Inc. All rights reserved.
>- *
>- * Redistribution and use in source and binary forms, with or without
>- * modification, are permitted provided that the following conditions
>- * are met:
>- * 1. Redistributions of source code must retain the above copyright
>- *    notice, this list of conditions and the following disclaimer.
>- * 2. Redistributions in binary form must reproduce the above copyright
>- *    notice, this list of conditions and the following disclaimer in the
>- *    documentation and/or other materials provided with the distribution.
>- *
>- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>- * THE POSSIBILITY OF SUCH DAMAGE.
>- */
>-
>-#include "config.h"
>-#include "MachMessage.h"
>-
>-#if PLATFORM(COCOA)
>-
>-#include <mach/mach.h>
>-
>-namespace IPC {
>-
>-std::unique_ptr<MachMessage> MachMessage::create(CString&& messageReceiverName, CString&& messageName, size_t size)
>-{
>-    void* memory = WTF::fastZeroedMalloc(sizeof(MachMessage) + size);
>-    return std::unique_ptr<MachMessage> { new (NotNull, memory) MachMessage { WTFMove(messageReceiverName), WTFMove(messageName), size } };
>-}
>-
>-MachMessage::MachMessage(CString&& messageReceiverName, CString&& messageName, size_t size)
>-    : m_messageReceiverName(WTFMove(messageReceiverName))
>-    , m_messageName(WTFMove(messageName))
>-    , m_size { size }
>-{
>-}
>-
>-MachMessage::~MachMessage()
>-{
>-    if (m_shouldFreeDescriptors)
>-        ::mach_msg_destroy(header());
>-}
>-
>-size_t MachMessage::messageSize(size_t bodySize, size_t portDescriptorCount, size_t memoryDescriptorCount)
>-{
>-    size_t messageSize = sizeof(mach_msg_header_t) + bodySize;
>-
>-    if (portDescriptorCount || memoryDescriptorCount) {
>-        messageSize += sizeof(mach_msg_body_t);
>-        messageSize += (portDescriptorCount * sizeof(mach_msg_port_descriptor_t));
>-        messageSize += (memoryDescriptorCount * sizeof(mach_msg_ool_descriptor_t));
>-    }
>-
>-    return round_msg(messageSize);
>-}
>-
>-void MachMessage::leakDescriptors()
>-{
>-    m_shouldFreeDescriptors = false;
>-}
>-
>-}
>-
>-#endif // PLATFORM(COCOA)
>diff --git a/Source/WebKit/Platform/IPC/mac/MachMessage.h b/Source/WebKit/Platform/IPC/mac/MachMessage.h
>deleted file mode 100644
>index d0131c7f0d3efa38af4054e276d4fc286c93442c..0000000000000000000000000000000000000000
>--- a/Source/WebKit/Platform/IPC/mac/MachMessage.h
>+++ /dev/null
>@@ -1,64 +0,0 @@
>-/*
>- * Copyright (C) 2016 Apple Inc. All rights reserved.
>- *
>- * Redistribution and use in source and binary forms, with or without
>- * modification, are permitted provided that the following conditions
>- * are met:
>- * 1. Redistributions of source code must retain the above copyright
>- *    notice, this list of conditions and the following disclaimer.
>- * 2. Redistributions in binary form must reproduce the above copyright
>- *    notice, this list of conditions and the following disclaimer in the
>- *    documentation and/or other materials provided with the distribution.
>- *
>- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>- * THE POSSIBILITY OF SUCH DAMAGE.
>- */
>-
>-#pragma once
>-
>-#if PLATFORM(COCOA)
>-
>-#include <mach/message.h>
>-#include <memory>
>-#include <wtf/text/CString.h>
>-
>-namespace IPC {
>-
>-class MachMessage {
>-    WTF_MAKE_FAST_ALLOCATED;
>-public:
>-    static std::unique_ptr<MachMessage> create(CString&& messageReceiverName, CString&& messageName, size_t);
>-    ~MachMessage();
>-
>-    static size_t messageSize(size_t bodySize, size_t portDescriptorCount, size_t memoryDescriptorCount);
>-
>-    size_t size() const { return m_size; }
>-    mach_msg_header_t* header() { return m_messageHeader; }
>-
>-    void leakDescriptors();
>-
>-    const CString& messageReceiverName() const { return m_messageReceiverName; }
>-    const CString& messageName() const { return m_messageName; }
>-
>-private:
>-    MachMessage(CString&& messageReceiverName, CString&& messageName, size_t);
>-
>-    CString m_messageReceiverName;
>-    CString m_messageName;
>-    size_t m_size;
>-    bool m_shouldFreeDescriptors { true };
>-    mach_msg_header_t m_messageHeader[];
>-};
>-
>-}
>-
>-#endif // PLATFORM(COCOA)
>diff --git a/Source/WebKit/Platform/IPC/mac/MachPort.h b/Source/WebKit/Platform/IPC/mac/MachPort.h
>deleted file mode 100644
>index 9144a052ea0cf429e807366158d4d18237241e2b..0000000000000000000000000000000000000000
>--- a/Source/WebKit/Platform/IPC/mac/MachPort.h
>+++ /dev/null
>@@ -1,75 +0,0 @@
>-/*
>- * Copyright (C) 2010 Apple Inc. All rights reserved.
>- *
>- * Redistribution and use in source and binary forms, with or without
>- * modification, are permitted provided that the following conditions
>- * are met:
>- * 1. Redistributions of source code must retain the above copyright
>- *    notice, this list of conditions and the following disclaimer.
>- * 2. Redistributions in binary form must reproduce the above copyright
>- *    notice, this list of conditions and the following disclaimer in the
>- *    documentation and/or other materials provided with the distribution.
>- *
>- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>- * THE POSSIBILITY OF SUCH DAMAGE.
>- */
>-
>-#ifndef MachPort_h
>-#define MachPort_h
>-
>-#include "Attachment.h"
>-#include "Decoder.h"
>-#include "Encoder.h"
>-
>-namespace IPC {
>-
>-class MachPort {
>-public:
>-    MachPort()
>-        : m_port(MACH_PORT_NULL)
>-        , m_disposition(0)
>-    {
>-    }
>-
>-    MachPort(mach_port_name_t port, mach_msg_type_name_t disposition)
>-        : m_port(port)
>-        , m_disposition(disposition)
>-    {
>-    }
>-
>-    void encode(Encoder& encoder) const
>-    {
>-        encoder << Attachment(m_port, m_disposition);
>-    }
>-
>-    static bool decode(Decoder& decoder, MachPort& p)
>-    {
>-        Attachment attachment;
>-        if (!decoder.decode(attachment))
>-            return false;
>-        
>-        p.m_port = attachment.port();
>-        p.m_disposition = attachment.disposition();
>-        return true;
>-    }
>-
>-    mach_port_name_t port() const { return m_port; }
>-    mach_msg_type_name_t disposition() const { return m_disposition; }
>-
>-private:
>-    mach_port_name_t m_port;
>-    mach_msg_type_name_t m_disposition;
>-};
>-
>-} // namespace IPC
>-
>-#endif // MachPort_h
>diff --git a/Source/WebKit/PlatformMac.cmake b/Source/WebKit/PlatformMac.cmake
>index 44084a62ea2177275f603b313f0f14444fdc41e7..d16c1212f7f63872697920eae87ebd41b45c9970 100644
>--- a/Source/WebKit/PlatformMac.cmake
>+++ b/Source/WebKit/PlatformMac.cmake
>@@ -42,8 +42,8 @@ list(APPEND WebKit_SOURCES
>     NetworkProcess/mac/NetworkProcessMac.mm
>     NetworkProcess/mac/RemoteNetworkingContext.mm
> 
>-    Platform/IPC/mac/ConnectionMac.mm
>-    Platform/IPC/mac/MachMessage.cpp
>+    Platform/IPC/cocoa/ConnectionCocoa.mm
>+    Platform/IPC/cocoa/MachMessage.cpp
> 
>     Platform/cf/ModuleCF.cpp
> 
>diff --git a/Source/WebKit/SourcesCocoa.txt b/Source/WebKit/SourcesCocoa.txt
>index ed4b0f0fb6c20802650882cbb841c75f9f9e9fe0..ced1b9370ef55c31760173408e55937f7a018e82 100644
>--- a/Source/WebKit/SourcesCocoa.txt
>+++ b/Source/WebKit/SourcesCocoa.txt
>@@ -74,8 +74,8 @@ Platform/foundation/LoggingFoundation.mm
> Platform/ios/AccessibilityIOS.mm
> Platform/ios/PaymentAuthorizationController.mm
> 
>-Platform/IPC/mac/ConnectionMac.mm
>-Platform/IPC/mac/MachMessage.cpp
>+Platform/IPC/cocoa/ConnectionCoca.mm
>+Platform/IPC/cocoa/MachMessage.cpp
> 
> Platform/mac/LayerHostingContext.mm
> Platform/mac/MachUtilities.cpp
>diff --git a/Source/WebKit/WebKit.xcodeproj/project.pbxproj b/Source/WebKit/WebKit.xcodeproj/project.pbxproj
>index 37879b54ac6301c485e20d4de4eeff58f3a609a4..32c6820f80ca9533e8dab7b1f767cb7ef38fac17 100644
>--- a/Source/WebKit/WebKit.xcodeproj/project.pbxproj
>+++ b/Source/WebKit/WebKit.xcodeproj/project.pbxproj
>@@ -2063,7 +2063,7 @@
> 		1A2D956D12848564001EB962 /* AuxiliaryProcess.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AuxiliaryProcess.h; sourceTree = "<group>"; };
> 		1A2D956E12848564001EB962 /* AuxiliaryProcess.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = AuxiliaryProcess.cpp; sourceTree = "<group>"; };
> 		1A30066C1110F4F70031937C /* ResponsivenessTimer.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ResponsivenessTimer.h; sourceTree = "<group>"; };
>-		1A30EAC5115D7DA30053E937 /* ConnectionMac.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = ConnectionMac.mm; sourceTree = "<group>"; };
>+		1A30EAC5115D7DA30053E937 /* ConnectionCocoa.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = ConnectionCocoa.mm; sourceTree = "<group>"; };
> 		1A334DEA16DE8B68006A8E38 /* StorageAreaMap.messages.in */ = {isa = PBXFileReference; lastKnownFileType = text; path = StorageAreaMap.messages.in; sourceTree = "<group>"; };
> 		1A334DEB16DE8F88006A8E38 /* StorageAreaMapMessageReceiver.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = StorageAreaMapMessageReceiver.cpp; path = DerivedSources/WebKit2/StorageAreaMapMessageReceiver.cpp; sourceTree = BUILT_PRODUCTS_DIR; };
> 		1A334DEC16DE8F88006A8E38 /* StorageAreaMapMessages.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = StorageAreaMapMessages.h; path = DerivedSources/WebKit2/StorageAreaMapMessages.h; sourceTree = BUILT_PRODUCTS_DIR; };
>@@ -5490,7 +5490,7 @@
> 		1AE00D6818327C1200087DD7 /* IPC */ = {
> 			isa = PBXGroup;
> 			children = (
>-				BCC56F751159955E001CCAF9 /* mac */,
>+				BCC56F751159955E001CCAF9 /* cocoa */,
> 				1AEFD27811D16C81008219D3 /* ArgumentCoder.h */,
> 				1A3D610413A7F03A00F95D4E /* ArgumentCoders.cpp */,
> 				1AEFD2F611D1807B008219D3 /* ArgumentCoders.h */,
>@@ -8332,16 +8332,16 @@
> 			path = WebContentService;
> 			sourceTree = "<group>";
> 		};
>-		BCC56F751159955E001CCAF9 /* mac */ = {
>+		BCC56F751159955E001CCAF9 /* cocoa */ = {
> 			isa = PBXGroup;
> 			children = (
>-				1A30EAC5115D7DA30053E937 /* ConnectionMac.mm */,
>+				1A30EAC5115D7DA30053E937 /* ConnectionCocoa.mm */,
> 				1A1EC69D1872092100B951F0 /* ImportanceAssertion.h */,
> 				1A6D86BF1DF75265007745E8 /* MachMessage.cpp */,
> 				1A6D86C01DF75265007745E8 /* MachMessage.h */,
> 				BCC56F771159957D001CCAF9 /* MachPort.h */,
> 			);
>-			path = mac;
>+			path = cocoa;
> 			sourceTree = "<group>";
> 		};
> 		BCCF085C113F3B7500C650C5 /* mac */ = {

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Attachments on bug 197661: 369289 | 369291 | 369293