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Ladybird: Ignore SIGINT when we're being debugged
Let's ignore SIGINT if we're being debugged because GDB incorrectly forwards the signal to us even when it's set to "nopass". See https://sourceware.org/bugzilla/show_bug.cgi?id=9425 for details.
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dd20b34acb
Notes:
sideshowbarker
2024-07-17 02:40:42 +09:00
Author: https://github.com/gunnarbeutner Commit: https://github.com/SerenityOS/serenity/commit/dd20b34acb Pull-request: https://github.com/SerenityOS/serenity/pull/16583 Reviewed-by: https://github.com/ADKaster Reviewed-by: https://github.com/awesomekling ✅ Reviewed-by: https://github.com/linusg
@ -10,18 +10,48 @@
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#include <LibCore/ArgsParser.h>
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#include <LibCore/EventLoop.h>
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#include <LibCore/File.h>
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#include <LibCore/Stream.h>
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#include <LibCore/System.h>
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#include <LibGfx/Font/FontDatabase.h>
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#include <LibMain/Main.h>
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#include <QApplication>
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Browser::Settings* s_settings;
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static ErrorOr<void> handle_attached_debugger()
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{
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#ifdef AK_OS_LINUX
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// Let's ignore SIGINT if we're being debugged because GDB
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// incorrectly forwards the signal to us even when it's set to
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// "nopass". See https://sourceware.org/bugzilla/show_bug.cgi?id=9425
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// for details.
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auto unbuffered_status_file = TRY(Core::Stream::File::open("/proc/self/status"sv, Core::Stream::OpenMode::Read));
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auto status_file = TRY(Core::Stream::BufferedFile::create(move(unbuffered_status_file)));
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auto buffer = TRY(ByteBuffer::create_uninitialized(4096));
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while (TRY(status_file->can_read_line())) {
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auto line = TRY(status_file->read_line(buffer));
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auto const parts = line.split_view(':');
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if (parts.size() < 2 || parts[0] != "TracerPid"sv)
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continue;
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auto tracer_pid = parts[1].to_uint<u32>();
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if (tracer_pid != 0UL) {
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dbgln("Debugger is attached, ignoring SIGINT");
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TRY(Core::System::signal(SIGINT, SIG_IGN));
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}
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break;
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}
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#endif
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return {};
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}
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ErrorOr<int> serenity_main(Main::Arguments arguments)
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{
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// NOTE: This is only used for the Core::Socket inside the IPC connections.
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// FIXME: Refactor things so we can get rid of this somehow.
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Core::EventLoop event_loop;
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TRY(handle_attached_debugger());
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QApplication app(arguments.argc, arguments.argv);
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platform_init();
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