mirror of
https://github.com/RGBCube/serenity
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b6d4eea7ac
Instead of returning HeapBlock memory to the kernel (or a non-type specific shared cache), we now keep a BlockAllocator per CellAllocator and implement "deallocation" by basically informing the kernel that we don't need the physical memory right now. This is done with MADV_FREE or MADV_DONTNEED if available, but for other platforms (including SerenityOS) we munmap and then re-mmap the memory to achieve the same effect. It's definitely clunky, so I've added a FIXME about implementing the madvise options on SerenityOS too. The important outcome of this change is that GC types that use a type-specific allocator become immune to use-after-free type confusion attacks, since their virtual addresses will only ever be re-used for the same exact type again and again. Fixes #22274
61 lines
2.7 KiB
C++
61 lines
2.7 KiB
C++
/*
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* Copyright (c) 2020-2022, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "ImageCodecPluginSerenity.h"
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#include <LibAudio/Loader.h>
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#include <LibCore/EventLoop.h>
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#include <LibCore/LocalServer.h>
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#include <LibCore/StandardPaths.h>
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#include <LibCore/System.h>
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#include <LibFileSystem/FileSystem.h>
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#include <LibIPC/SingleServer.h>
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#include <LibMain/Main.h>
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#include <LibWeb/Bindings/MainThreadVM.h>
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#include <LibWeb/Loader/ResourceLoader.h>
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#include <LibWeb/Platform/AudioCodecPluginAgnostic.h>
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#include <LibWeb/Platform/EventLoopPlugin.h>
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#include <LibWeb/Platform/EventLoopPluginSerenity.h>
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#include <LibWeb/Platform/FontPluginSerenity.h>
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#include <LibWeb/WebSockets/WebSocket.h>
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#include <LibWebView/RequestServerAdapter.h>
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#include <LibWebView/WebSocketClientAdapter.h>
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#include <WebContent/ConnectionFromClient.h>
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ErrorOr<int> serenity_main(Main::Arguments)
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{
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Core::EventLoop event_loop;
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TRY(Core::System::pledge("stdio recvfd sendfd accept unix rpath thread proc map_fixed"));
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// This must be first; we can't check if /tmp/webdriver exists once we've unveiled other paths.
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auto webdriver_socket_path = ByteString::formatted("{}/webdriver", TRY(Core::StandardPaths::runtime_directory()));
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if (FileSystem::exists(webdriver_socket_path))
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TRY(Core::System::unveil(webdriver_socket_path, "rw"sv));
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TRY(Core::System::unveil("/res", "r"));
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TRY(Core::System::unveil("/etc/timezone", "r"));
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TRY(Core::System::unveil("/usr/lib", "r"));
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TRY(Core::System::unveil("/tmp/session/%sid/portal/audio", "rw"));
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TRY(Core::System::unveil("/tmp/session/%sid/portal/request", "rw"));
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TRY(Core::System::unveil("/tmp/session/%sid/portal/image", "rw"));
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TRY(Core::System::unveil("/tmp/session/%sid/portal/websocket", "rw"));
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TRY(Core::System::unveil("/tmp/session/%sid/portal/webworker", "rw"));
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TRY(Core::System::unveil(nullptr, nullptr));
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Web::Platform::EventLoopPlugin::install(*new Web::Platform::EventLoopPluginSerenity);
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Web::Platform::ImageCodecPlugin::install(*new WebContent::ImageCodecPluginSerenity);
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Web::Platform::FontPlugin::install(*new Web::Platform::FontPluginSerenity);
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Web::Platform::AudioCodecPlugin::install_creation_hook([](auto loader) {
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return Web::Platform::AudioCodecPluginAgnostic::create(move(loader));
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});
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Web::WebSockets::WebSocketClientManager::initialize(TRY(WebView::WebSocketClientManagerAdapter::try_create()));
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Web::ResourceLoader::initialize(TRY(WebView::RequestServerAdapter::try_create()));
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TRY(Web::Bindings::initialize_main_thread_vm());
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auto client = TRY(IPC::take_over_accepted_client_from_system_server<WebContent::ConnectionFromClient>());
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return event_loop.exec();
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}
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