1 /* SPDX-License-Identifier: LGPL-2.1+ */
5 This file is part of systemd.
7 Copyright 2010 Lennart Poettering
10 typedef struct Service Service
;
11 typedef struct ServiceFDStore ServiceFDStore
;
13 #include "exit-status.h"
16 #include "ratelimit.h"
18 typedef enum ServiceRestart
{
20 SERVICE_RESTART_ON_SUCCESS
,
21 SERVICE_RESTART_ON_FAILURE
,
22 SERVICE_RESTART_ON_ABNORMAL
,
23 SERVICE_RESTART_ON_WATCHDOG
,
24 SERVICE_RESTART_ON_ABORT
,
25 SERVICE_RESTART_ALWAYS
,
27 _SERVICE_RESTART_INVALID
= -1
30 typedef enum ServiceType
{
31 SERVICE_SIMPLE
, /* we fork and go on right-away (i.e. modern socket activated daemons) */
32 SERVICE_FORKING
, /* forks by itself (i.e. traditional daemons) */
33 SERVICE_ONESHOT
, /* we fork and wait until the program finishes (i.e. programs like fsck which run and need to finish before we continue) */
34 SERVICE_DBUS
, /* we fork and wait until a specific D-Bus name appears on the bus */
35 SERVICE_NOTIFY
, /* we fork and wait until a daemon sends us a ready message with sd_notify() */
36 SERVICE_IDLE
, /* much like simple, but delay exec() until all jobs are dispatched. */
38 _SERVICE_TYPE_INVALID
= -1
41 typedef enum ServiceExecCommand
{
42 SERVICE_EXEC_START_PRE
,
44 SERVICE_EXEC_START_POST
,
47 SERVICE_EXEC_STOP_POST
,
48 _SERVICE_EXEC_COMMAND_MAX
,
49 _SERVICE_EXEC_COMMAND_INVALID
= -1
52 typedef enum NotifyState
{
58 _NOTIFY_STATE_INVALID
= -1
61 /* The values of this enum are referenced in man/systemd.exec.xml and src/shared/bus-unit-util.c.
62 * Update those sources for each change to this enum. */
63 typedef enum ServiceResult
{
65 SERVICE_FAILURE_RESOURCES
, /* a bit of a misnomer, just our catch-all error for errnos we didn't expect */
66 SERVICE_FAILURE_PROTOCOL
,
67 SERVICE_FAILURE_TIMEOUT
,
68 SERVICE_FAILURE_EXIT_CODE
,
69 SERVICE_FAILURE_SIGNAL
,
70 SERVICE_FAILURE_CORE_DUMP
,
71 SERVICE_FAILURE_WATCHDOG
,
72 SERVICE_FAILURE_START_LIMIT_HIT
,
74 _SERVICE_RESULT_INVALID
= -1
77 struct ServiceFDStore
{
82 sd_event_source
*event_source
;
84 LIST_FIELDS(ServiceFDStore
, fd_store
);
91 ServiceRestart restart
;
92 ExitStatusSet restart_prevent_status
;
93 ExitStatusSet restart_force_status
;
94 ExitStatusSet success_status
;
96 /* If set we'll read the main daemon PID from this file */
100 usec_t timeout_start_usec
;
101 usec_t timeout_stop_usec
;
102 usec_t runtime_max_usec
;
104 dual_timestamp watchdog_timestamp
;
105 usec_t watchdog_usec
;
106 usec_t watchdog_override_usec
;
107 bool watchdog_override_enable
;
108 sd_event_source
*watchdog_event_source
;
110 ExecCommand
* exec_command
[_SERVICE_EXEC_COMMAND_MAX
];
112 ExecContext exec_context
;
113 KillContext kill_context
;
114 CGroupContext cgroup_context
;
116 ServiceState state
, deserialized_state
;
118 /* The exit status of the real main process */
119 ExecStatus main_exec_status
;
121 /* The currently executed control process */
122 ExecCommand
*control_command
;
124 /* The currently executed main process, which may be NULL if
125 * the main process got started via forking mode and not by
127 ExecCommand
*main_command
;
129 /* The ID of the control command currently being executed */
130 ServiceExecCommand control_command_id
;
132 /* Runtime data of the execution context */
133 ExecRuntime
*exec_runtime
;
134 DynamicCreds dynamic_creds
;
136 pid_t main_pid
, control_pid
;
139 bool socket_fd_selinux_context_net
;
141 bool permissions_start_only
;
142 bool root_directory_start_only
;
143 bool remain_after_exit
;
146 /* If we shut down, remember why */
147 ServiceResult result
;
148 ServiceResult reload_result
;
150 bool main_pid_known
:1;
151 bool main_pid_alien
:1;
152 bool bus_name_good
:1;
153 bool forbid_restart
:1;
154 /* Keep restart intention between UNIT_FAILED and UNIT_ACTIVATING */
155 bool will_auto_restart
:1;
156 bool start_timeout_defined
:1;
159 char *bus_name_owner
; /* unique name of the current owner */
164 UnitRef accept_socket
;
166 sd_event_source
*timer_event_source
;
167 PathSpec
*pid_file_pathspec
;
169 NotifyAccess notify_access
;
170 NotifyState notify_state
;
172 ServiceFDStore
*fd_store
;
174 unsigned n_fd_store_max
;
175 unsigned n_keep_fd_store
;
177 char *usb_function_descriptors
;
178 char *usb_function_strings
;
185 bool flush_n_restarts
;
188 extern const UnitVTable service_vtable
;
190 int service_set_socket_fd(Service
*s
, int fd
, struct Socket
*socket
, bool selinux_context_net
);
191 void service_close_socket_fd(Service
*s
);
193 const char* service_restart_to_string(ServiceRestart i
) _const_
;
194 ServiceRestart
service_restart_from_string(const char *s
) _pure_
;
196 const char* service_type_to_string(ServiceType i
) _const_
;
197 ServiceType
service_type_from_string(const char *s
) _pure_
;
199 const char* service_exec_command_to_string(ServiceExecCommand i
) _const_
;
200 ServiceExecCommand
service_exec_command_from_string(const char *s
) _pure_
;
202 const char* notify_state_to_string(NotifyState i
) _const_
;
203 NotifyState
notify_state_from_string(const char *s
) _pure_
;
205 const char* service_result_to_string(ServiceResult i
) _const_
;
206 ServiceResult
service_result_from_string(const char *s
) _pure_
;