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LibCore: Remove now-unused singleton process utilities

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Timothy Flynn 2024-06-04 16:54:43 -04:00 • committed by Tim Flynn
commit d61770c457
Notes: sideshowbarker 2024-07-16 23:52:22 +09:00
3 changed files with 8 additions and 98 deletions
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53
Userland/Libraries/LibCore/Process.cpp
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@ -453,57 +453,4 @@ ErrorOr<IPCProcess::ProcessPaths> IPCProcess::paths_for_process(StringView proce
return ProcessPaths { move(socket_path), move(pid_path) };
}
ErrorOr<IPCProcess::ProcessAndIPCSocket> IPCProcess::spawn_singleton_and_connect_to_process(ProcessSpawnOptions const& options)
{
auto [socket_path, pid_path] = TRY(paths_for_process(options.name));
Process process { -1 };
if (auto existing_pid = TRY(get_process_pid(options.name, pid_path)); existing_pid.has_value()) {
process = Process { *existing_pid };
} else {
auto ipc_fd = TRY(create_ipc_socket(socket_path));
sigset_t original_set;
sigset_t setting_set;
sigfillset(&setting_set);
(void)pthread_sigmask(SIG_BLOCK, &setting_set, &original_set);
// FIXME: Roll this daemon implementation into `Process::disown`.
if (auto pid = TRY(System::fork()); pid == 0) {
(void)pthread_sigmask(SIG_SETMASK, &original_set, nullptr);
TRY(System::setsid());
TRY(System::signal(SIGCHLD, SIG_IGN));
auto& arguments = const_cast<Vector<ByteString>&>(options.arguments);
arguments.append("--pid-file"sv);
arguments.append(pid_path);
auto takeover_string = ByteString::formatted("{}:{}", options.name, TRY(System::dup(ipc_fd)));
TRY(Environment::set("SOCKET_TAKEOVER"sv, takeover_string, Environment::Overwrite::Yes));
auto process = TRY(Process::spawn(options));
{
auto pid_file = TRY(File::open(pid_path, File::OpenMode::Write));
TRY(pid_file->write_until_depleted(ByteString::number(process.pid())));
}
TRY(System::kill(getpid(), SIGTERM));
} else {
auto wait_err = System::waitpid(pid);
(void)pthread_sigmask(SIG_SETMASK, &original_set, nullptr);
TRY(wait_err);
}
auto pid = TRY(get_process_pid(options.name, pid_path));
VERIFY(pid.has_value());
process = Process { *pid };
}
auto ipc_socket = TRY(LocalSocket::connect(socket_path));
TRY(ipc_socket->set_blocking(true));
return ProcessAndIPCSocket { move(process), move(ipc_socket) };
}
}