1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
6 This file is part of systemd.
8 Copyright 2010 Lennart Poettering
10 systemd is free software; you can redistribute it and/or modify it
11 under the terms of the GNU Lesser General Public License as published by
12 the Free Software Foundation; either version 2.1 of the License, or
13 (at your option) any later version.
15 systemd is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public License
21 along with systemd; If not, see <http://www.gnu.org/licenses/>.
24 typedef struct Service Service
;
28 #include "ratelimit.h"
30 #include "exit-status.h"
31 #include "failure-action.h"
33 typedef enum ServiceState
{
39 SERVICE_EXITED
, /* Nothing is running anymore, but RemainAfterExit is true hence this is OK */
41 SERVICE_STOP
, /* No STOP_PRE state, instead just register multiple STOP executables */
45 SERVICE_FINAL_SIGTERM
, /* In case the STOP_POST executable hangs, we shoot that down, too */
46 SERVICE_FINAL_SIGKILL
,
50 _SERVICE_STATE_INVALID
= -1
53 typedef enum ServiceRestart
{
55 SERVICE_RESTART_ON_SUCCESS
,
56 SERVICE_RESTART_ON_FAILURE
,
57 SERVICE_RESTART_ON_ABNORMAL
,
58 SERVICE_RESTART_ON_WATCHDOG
,
59 SERVICE_RESTART_ON_ABORT
,
60 SERVICE_RESTART_ALWAYS
,
62 _SERVICE_RESTART_INVALID
= -1
65 typedef enum ServiceType
{
66 SERVICE_SIMPLE
, /* we fork and go on right-away (i.e. modern socket activated daemons) */
67 SERVICE_FORKING
, /* forks by itself (i.e. traditional daemons) */
68 SERVICE_ONESHOT
, /* we fork and wait until the program finishes (i.e. programs like fsck which run and need to finish before we continue) */
69 SERVICE_DBUS
, /* we fork and wait until a specific D-Bus name appears on the bus */
70 SERVICE_NOTIFY
, /* we fork and wait until a daemon sends us a ready message with sd_notify() */
71 SERVICE_IDLE
, /* much like simple, but delay exec() until all jobs are dispatched. */
73 _SERVICE_TYPE_INVALID
= -1
76 typedef enum ServiceExecCommand
{
77 SERVICE_EXEC_START_PRE
,
79 SERVICE_EXEC_START_POST
,
82 SERVICE_EXEC_STOP_POST
,
83 _SERVICE_EXEC_COMMAND_MAX
,
84 _SERVICE_EXEC_COMMAND_INVALID
= -1
87 typedef enum NotifyAccess
{
92 _NOTIFY_ACCESS_INVALID
= -1
95 typedef enum NotifyState
{
101 _NOTIFY_STATE_INVALID
= -1
104 typedef enum ServiceResult
{
106 SERVICE_FAILURE_RESOURCES
,
107 SERVICE_FAILURE_TIMEOUT
,
108 SERVICE_FAILURE_EXIT_CODE
,
109 SERVICE_FAILURE_SIGNAL
,
110 SERVICE_FAILURE_CORE_DUMP
,
111 SERVICE_FAILURE_WATCHDOG
,
112 SERVICE_FAILURE_START_LIMIT
,
114 _SERVICE_RESULT_INVALID
= -1
121 ServiceRestart restart
;
122 ExitStatusSet restart_prevent_status
;
123 ExitStatusSet restart_force_status
;
124 ExitStatusSet success_status
;
126 /* If set we'll read the main daemon PID from this file */
130 usec_t timeout_start_usec
;
131 usec_t timeout_stop_usec
;
133 dual_timestamp watchdog_timestamp
;
134 usec_t watchdog_usec
;
135 sd_event_source
*watchdog_event_source
;
137 ExecCommand
* exec_command
[_SERVICE_EXEC_COMMAND_MAX
];
139 ExecContext exec_context
;
140 KillContext kill_context
;
141 CGroupContext cgroup_context
;
143 ServiceState state
, deserialized_state
;
145 /* The exit status of the real main process */
146 ExecStatus main_exec_status
;
148 /* The currently executed control process */
149 ExecCommand
*control_command
;
151 /* The currently executed main process, which may be NULL if
152 * the main process got started via forking mode and not by
154 ExecCommand
*main_command
;
156 /* The ID of the control command currently being executed */
157 ServiceExecCommand control_command_id
;
159 /* Runtime data of the execution context */
160 ExecRuntime
*exec_runtime
;
162 pid_t main_pid
, control_pid
;
167 bool permissions_start_only
;
168 bool root_directory_start_only
;
169 bool remain_after_exit
;
172 /* If we shut down, remember why */
173 ServiceResult result
;
174 ServiceResult reload_result
;
176 bool main_pid_known
:1;
177 bool main_pid_alien
:1;
178 bool bus_name_good
:1;
179 bool forbid_restart
:1;
180 bool start_timeout_defined
:1;
181 #ifdef HAVE_SYSV_COMPAT
182 int sysv_start_priority
;
190 RateLimit start_limit
;
191 FailureAction start_limit_action
;
192 FailureAction failure_action
;
195 UnitRef accept_socket
;
197 sd_event_source
*timer_event_source
;
198 PathSpec
*pid_file_pathspec
;
200 NotifyAccess notify_access
;
201 NotifyState notify_state
;
204 extern const UnitVTable service_vtable
;
208 int service_set_socket_fd(Service
*s
, int fd
, struct Socket
*socket
);
210 const char* service_state_to_string(ServiceState i
) _const_
;
211 ServiceState
service_state_from_string(const char *s
) _pure_
;
213 const char* service_restart_to_string(ServiceRestart i
) _const_
;
214 ServiceRestart
service_restart_from_string(const char *s
) _pure_
;
216 const char* service_type_to_string(ServiceType i
) _const_
;
217 ServiceType
service_type_from_string(const char *s
) _pure_
;
219 const char* service_exec_command_to_string(ServiceExecCommand i
) _const_
;
220 ServiceExecCommand
service_exec_command_from_string(const char *s
) _pure_
;
222 const char* notify_access_to_string(NotifyAccess i
) _const_
;
223 NotifyAccess
notify_access_from_string(const char *s
) _pure_
;
225 const char* notify_state_to_string(NotifyState i
) _const_
;
226 NotifyState
notify_state_from_string(const char *s
) _pure_
;
228 const char* service_result_to_string(ServiceResult i
) _const_
;
229 ServiceResult
service_result_from_string(const char *s
) _pure_
;