/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ #pragma once /*** This file is part of systemd. Copyright 2010 Lennart Poettering systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ typedef struct Service Service; typedef struct ServiceFDStore ServiceFDStore; #include "path.h" #include "ratelimit.h" #include "kill.h" #include "exit-status.h" typedef enum ServiceState { SERVICE_DEAD, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_EXITED, /* Nothing is running anymore, but RemainAfterExit is true hence this is OK */ SERVICE_RELOAD, SERVICE_STOP, /* No STOP_PRE state, instead just register multiple STOP executables */ SERVICE_STOP_SIGABRT, /* Watchdog timeout */ SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST, SERVICE_FINAL_SIGTERM, /* In case the STOP_POST executable hangs, we shoot that down, too */ SERVICE_FINAL_SIGKILL, SERVICE_FAILED, SERVICE_AUTO_RESTART, _SERVICE_STATE_MAX, _SERVICE_STATE_INVALID = -1 } ServiceState; typedef enum ServiceRestart { SERVICE_RESTART_NO, SERVICE_RESTART_ON_SUCCESS, SERVICE_RESTART_ON_FAILURE, SERVICE_RESTART_ON_ABNORMAL, SERVICE_RESTART_ON_WATCHDOG, SERVICE_RESTART_ON_ABORT, SERVICE_RESTART_ALWAYS, _SERVICE_RESTART_MAX, _SERVICE_RESTART_INVALID = -1 } ServiceRestart; typedef enum ServiceType { SERVICE_SIMPLE, /* we fork and go on right-away (i.e. modern socket activated daemons) */ SERVICE_FORKING, /* forks by itself (i.e. traditional daemons) */ SERVICE_ONESHOT, /* we fork and wait until the program finishes (i.e. programs like fsck which run and need to finish before we continue) */ SERVICE_DBUS, /* we fork and wait until a specific D-Bus name appears on the bus */ SERVICE_NOTIFY, /* we fork and wait until a daemon sends us a ready message with sd_notify() */ SERVICE_IDLE, /* much like simple, but delay exec() until all jobs are dispatched. */ _SERVICE_TYPE_MAX, _SERVICE_TYPE_INVALID = -1 } ServiceType; typedef enum ServiceExecCommand { SERVICE_EXEC_START_PRE, SERVICE_EXEC_START, SERVICE_EXEC_START_POST, SERVICE_EXEC_RELOAD, SERVICE_EXEC_STOP, SERVICE_EXEC_STOP_POST, _SERVICE_EXEC_COMMAND_MAX, _SERVICE_EXEC_COMMAND_INVALID = -1 } ServiceExecCommand; typedef enum NotifyAccess { NOTIFY_NONE, NOTIFY_ALL, NOTIFY_MAIN, _NOTIFY_ACCESS_MAX, _NOTIFY_ACCESS_INVALID = -1 } NotifyAccess; typedef enum NotifyState { NOTIFY_UNKNOWN, NOTIFY_READY, NOTIFY_RELOADING, NOTIFY_STOPPING, _NOTIFY_STATE_MAX, _NOTIFY_STATE_INVALID = -1 } NotifyState; typedef enum ServiceResult { SERVICE_SUCCESS, SERVICE_FAILURE_RESOURCES, SERVICE_FAILURE_TIMEOUT, SERVICE_FAILURE_EXIT_CODE, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP, SERVICE_FAILURE_WATCHDOG, SERVICE_FAILURE_START_LIMIT, _SERVICE_RESULT_MAX, _SERVICE_RESULT_INVALID = -1 } ServiceResult; struct ServiceFDStore { Service *service; int fd; sd_event_source *event_source; LIST_FIELDS(ServiceFDStore, fd_store); }; struct Service { Unit meta; ServiceType type; ServiceRestart restart; ExitStatusSet restart_prevent_status; ExitStatusSet restart_force_status; ExitStatusSet success_status; /* If set we'll read the main daemon PID from this file */ char *pid_file; usec_t restart_usec; usec_t timeout_start_usec; usec_t timeout_stop_usec; dual_timestamp watchdog_timestamp; usec_t watchdog_usec; sd_event_source *watchdog_event_source; ExecCommand* exec_command[_SERVICE_EXEC_COMMAND_MAX]; ExecContext exec_context; KillContext kill_context; CGroupContext cgroup_context; ServiceState state, deserialized_state; /* The exit status of the real main process */ ExecStatus main_exec_status; /* The currently executed control process */ ExecCommand *control_command; /* The currently executed main process, which may be NULL if * the main process got started via forking mode and not by * us */ ExecCommand *main_command; /* The ID of the control command currently being executed */ ServiceExecCommand control_command_id; /* Runtime data of the execution context */ ExecRuntime *exec_runtime; pid_t main_pid, control_pid; int socket_fd; bool socket_fd_selinux_context_net; int bus_endpoint_fd; bool permissions_start_only; bool root_directory_start_only; bool remain_after_exit; bool guess_main_pid; /* If we shut down, remember why */ ServiceResult result; ServiceResult reload_result; bool main_pid_known:1; bool main_pid_alien:1; bool bus_name_good:1; bool forbid_restart:1; bool start_timeout_defined:1; bool reset_cpu_usage:1; char *bus_name; char *status_text; int status_errno; RateLimit start_limit; FailureAction start_limit_action; FailureAction failure_action; char *reboot_arg; UnitRef accept_socket; sd_event_source *timer_event_source; PathSpec *pid_file_pathspec; NotifyAccess notify_access; NotifyState notify_state; ServiceFDStore *fd_store; unsigned n_fd_store; unsigned n_fd_store_max; char *usb_function_descriptors; char *usb_function_strings; }; extern const UnitVTable service_vtable; int service_set_socket_fd(Service *s, int fd, struct Socket *socket, bool selinux_context_net); const char* service_state_to_string(ServiceState i) _const_; ServiceState service_state_from_string(const char *s) _pure_; const char* service_restart_to_string(ServiceRestart i) _const_; ServiceRestart service_restart_from_string(const char *s) _pure_; const char* service_type_to_string(ServiceType i) _const_; ServiceType service_type_from_string(const char *s) _pure_; const char* service_exec_command_to_string(ServiceExecCommand i) _const_; ServiceExecCommand service_exec_command_from_string(const char *s) _pure_; const char* notify_access_to_string(NotifyAccess i) _const_; NotifyAccess notify_access_from_string(const char *s) _pure_; const char* notify_state_to_string(NotifyState i) _const_; NotifyState notify_state_from_string(const char *s) _pure_; const char* service_result_to_string(ServiceResult i) _const_; ServiceResult service_result_from_string(const char *s) _pure_;