mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 02:52:43 +00:00
96 lines
3.3 KiB
C++
96 lines
3.3 KiB
C++
/*
|
|
* Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/DeprecatedString.h>
|
|
#include <AK/RefPtr.h>
|
|
#include <LibCore/Account.h>
|
|
#include <LibCore/ElapsedTimer.h>
|
|
#include <LibCore/EventReceiver.h>
|
|
#include <LibCore/Notifier.h>
|
|
|
|
class Service final : public Core::EventReceiver {
|
|
C_OBJECT_ABSTRACT(Service)
|
|
|
|
public:
|
|
static ErrorOr<NonnullRefPtr<Service>> try_create(Core::ConfigFile const& config, StringView name);
|
|
~Service();
|
|
|
|
bool is_enabled() const;
|
|
ErrorOr<void> activate();
|
|
// Note: This is a `status` as in POSIX's wait syscall, not an exit-code.
|
|
ErrorOr<void> did_exit(int status);
|
|
|
|
static Service* find_by_pid(pid_t);
|
|
|
|
private:
|
|
Service(Core::ConfigFile const&, StringView name);
|
|
|
|
ErrorOr<void> spawn(int socket_fd = -1);
|
|
|
|
ErrorOr<void> determine_account(int fd);
|
|
|
|
ErrorOr<void> change_privileges();
|
|
|
|
/// SocketDescriptor describes the details of a single socket that was
|
|
/// requested by a service.
|
|
struct SocketDescriptor {
|
|
/// The path of the socket.
|
|
DeprecatedString path;
|
|
/// File descriptor of the socket. -1 if the socket hasn't been opened.
|
|
int fd { -1 };
|
|
/// File permissions of the socket.
|
|
mode_t permissions;
|
|
};
|
|
|
|
// Path to the executable. By default this is /bin/{m_name}.
|
|
DeprecatedString m_executable_path;
|
|
// Extra arguments, starting from argv[1], to pass when exec'ing.
|
|
DeprecatedString m_extra_arguments;
|
|
// File path to open as stdio fds.
|
|
DeprecatedString m_stdio_file_path;
|
|
int m_priority { 1 };
|
|
// Whether we should re-launch it if it exits.
|
|
bool m_keep_alive { false };
|
|
// Whether we should accept connections on the socket and pass the accepted
|
|
// (and not listening) socket to the service. This requires a multi-instance
|
|
// service.
|
|
bool m_accept_socket_connections { false };
|
|
// Whether we should only spawn this service once somebody connects to the socket.
|
|
bool m_lazy;
|
|
// The name of the user we should run this service as.
|
|
DeprecatedString m_user;
|
|
// The working directory in which to spawn the service.
|
|
DeprecatedString m_working_directory;
|
|
// System modes in which to run this service. By default, this is the graphical mode.
|
|
Vector<DeprecatedString> m_system_modes;
|
|
// Whether several instances of this service can run at once.
|
|
bool m_multi_instance { false };
|
|
// Environment variables to pass to the service.
|
|
DeprecatedString m_environment;
|
|
// Socket descriptors for this service.
|
|
Vector<SocketDescriptor> m_sockets;
|
|
|
|
// The resolved user account to run this service as.
|
|
Optional<Core::Account> m_account;
|
|
bool m_must_login { false };
|
|
|
|
// For single-instance services, PID of the running instance of this service.
|
|
pid_t m_pid { -1 };
|
|
RefPtr<Core::Notifier> m_socket_notifier;
|
|
|
|
// Timer since we last spawned the service.
|
|
Core::ElapsedTimer m_run_timer;
|
|
// How many times we have tried to restart this service, only counting those
|
|
// times where it has exited unsuccessfully and too quickly.
|
|
int m_restart_attempts { 0 };
|
|
|
|
ErrorOr<void> setup_socket(SocketDescriptor&);
|
|
ErrorOr<void> setup_sockets();
|
|
void setup_notifier();
|
|
ErrorOr<void> handle_socket_connection();
|
|
};
|