1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
7 This file is part of systemd.
9 Copyright 2010 Lennart Poettering
11 systemd is free software; you can redistribute it and/or modify it
12 under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 systemd is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with systemd; If not, see <http://www.gnu.org/licenses/>.
28 #include <dbus/dbus.h>
32 /* Enforce upper limit how many names we allow */
33 #define MANAGER_MAX_NAMES 2048
35 typedef struct Manager Manager
;
36 typedef enum WatchType WatchType
;
37 typedef struct Watch Watch
;
39 typedef enum ManagerExitCode
{
44 _MANAGER_EXIT_CODE_MAX
,
45 _MANAGER_EXIT_CODE_INVALID
= -1
48 typedef enum ManagerRunningAs
{
49 MANAGER_INIT
, /* root and pid=1 */
50 MANAGER_SYSTEM
, /* root and pid!=1 */
51 MANAGER_SESSION
, /* non-root, for a session */
52 _MANAGER_RUNNING_AS_MAX
,
53 _MANAGER_RUNNING_AS_INVALID
= -1
73 DBusTimeout
*bus_timeout
;
86 #define SPECIAL_DEFAULT_TARGET "default.target"
88 /* This is not really intended to be started by directly. This is
89 * mostly so that other targets (reboot/halt/poweroff) can depend on
90 * it to bring all services down that want to be brought down on
92 #define SPECIAL_SHUTDOWN_TARGET "shutdown.target"
94 #define SPECIAL_LOGGER_SOCKET "systemd-logger.socket"
96 #define SPECIAL_KBREQUEST_TARGET "kbrequest.target"
97 #define SPECIAL_SIGPWR_TARGET "sigpwr.target"
98 #define SPECIAL_CTRL_ALT_DEL_TARGET "ctrl-alt-del.target"
100 #define SPECIAL_LOCAL_FS_TARGET "local-fs.target"
101 #define SPECIAL_REMOTE_FS_TARGET "remote-fs.target"
102 #define SPECIAL_NETWORK_TARGET "network.target"
103 #define SPECIAL_NSS_LOOKUP_TARGET "nss-lookup.target" /* LSB's $named */
104 #define SPECIAL_RPCBIND_TARGET "rpcbind.target" /* LSB's $portmap */
105 #define SPECIAL_SYSLOG_TARGET "syslog.target" /* Should pull in syslog.socket or syslog.service */
106 #define SPECIAL_RTC_SET_TARGET "rtc-set.target" /* LSB's $time */
108 #define SPECIAL_BASIC_TARGET "basic.target"
109 #define SPECIAL_RESCUE_TARGET "rescue.target"
111 #ifndef SPECIAL_DBUS_SERVICE
112 #define SPECIAL_DBUS_SERVICE "dbus.service"
115 #ifndef SPECIAL_SYSLOG_SERVICE
116 #define SPECIAL_SYSLOG_SERVICE "syslog.service"
119 /* For SysV compatibility. Usually an alias for a saner target. On
120 * SysV-free systems this doesn't exist. */
121 #define SPECIAL_RUNLEVEL0_TARGET "runlevel0.target"
122 #define SPECIAL_RUNLEVEL1_TARGET "runlevel1.target"
123 #define SPECIAL_RUNLEVEL2_TARGET "runlevel2.target"
124 #define SPECIAL_RUNLEVEL3_TARGET "runlevel3.target"
125 #define SPECIAL_RUNLEVEL4_TARGET "runlevel4.target"
126 #define SPECIAL_RUNLEVEL5_TARGET "runlevel5.target"
127 #define SPECIAL_RUNLEVEL6_TARGET "runlevel6.target"
130 uint32_t current_job_id
;
132 /* Note that the set of units we know of is allowed to be
133 * incosistent. However the subset of it that is loaded may
134 * not, and the list of jobs may neither. */
136 /* Active jobs and units */
137 Hashmap
*units
; /* name string => Unit object n:1 */
138 Hashmap
*jobs
; /* job id => Job object 1:1 */
140 /* To make it easy to iterate through the units of a specific
141 * type we maintain a per type linked list */
142 LIST_HEAD(Meta
, units_per_type
[_UNIT_TYPE_MAX
]);
144 /* Units that need to be loaded */
145 LIST_HEAD(Meta
, load_queue
); /* this is actually more a stack than a queue, but uh. */
147 /* Jobs that need to be run */
148 LIST_HEAD(Job
, run_queue
); /* more a stack than a queue, too */
150 /* Units and jobs that have not yet been announced via
151 * D-Bus. When something about a job changes it is added here
152 * if it is not in there yet. This allows easy coalescing of
153 * D-Bus change signals. */
154 LIST_HEAD(Meta
, dbus_unit_queue
);
155 LIST_HEAD(Job
, dbus_job_queue
);
157 /* Units to remove */
158 LIST_HEAD(Meta
, cleanup_queue
);
160 /* Units to check when doing GC */
161 LIST_HEAD(Meta
, gc_queue
);
163 /* Jobs to be added */
164 Hashmap
*transaction_jobs
; /* Unit object => Job object list 1:1 */
165 JobDependency
*transaction_anchor
;
167 Hashmap
*watch_pids
; /* pid => Unit object n:1 */
173 unsigned n_snapshots
;
176 char **sysvinit_path
;
177 char **sysvrcnd_path
;
179 usec_t boot_timestamp
;
181 /* Data specific to the device subsystem */
183 struct udev_monitor
* udev_monitor
;
186 /* Data specific to the mount subsystem */
187 FILE *proc_self_mountinfo
;
190 /* Data specific to the D-Bus subsystem */
191 DBusConnection
*api_bus
, *system_bus
;
193 DBusMessage
*queued_message
; /* This is used during reloading:
194 * before the reload we queue the
195 * reply message here, and
196 * afterwards we send it */
198 Hashmap
*watch_bus
; /* D-Bus names => Unit object n:1 */
199 int32_t name_data_slot
;
201 /* Data specific to the Automount subsystem */
204 /* Data specific to the cgroup subsystem */
205 Hashmap
*cgroup_bondings
; /* path string => CGroupBonding object 1:n */
206 char *cgroup_controller
;
207 char *cgroup_hierarchy
;
209 usec_t gc_queue_timestamp
;
212 unsigned n_in_gc_queue
;
215 ManagerRunningAs running_as
;
216 ManagerExitCode exit_code
:4;
218 bool dispatching_load_queue
:1;
219 bool dispatching_run_queue
:1;
220 bool dispatching_dbus_queue
:1;
222 bool request_api_bus_dispatch
:1;
223 bool request_system_bus_dispatch
:1;
225 bool utmp_reboot_written
:1;
227 bool confirm_spawn
:1;
230 int manager_new(ManagerRunningAs running_as
, bool confirm_spawn
, Manager
**m
);
231 void manager_free(Manager
*m
);
233 int manager_enumerate(Manager
*m
);
234 int manager_coldplug(Manager
*m
);
235 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
);
237 Job
*manager_get_job(Manager
*m
, uint32_t id
);
238 Unit
*manager_get_unit(Manager
*m
, const char *name
);
240 int manager_get_unit_from_dbus_path(Manager
*m
, const char *s
, Unit
**_u
);
241 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
);
243 int manager_load_unit(Manager
*m
, const char *name
, const char *path
, Unit
**_ret
);
245 int manager_add_job(Manager
*m
, JobType type
, Unit
*unit
, JobMode mode
, bool force
, Job
**_ret
);
246 int manager_add_job_by_name(Manager
*m
, JobType type
, const char *name
, JobMode mode
, bool force
, Job
**_ret
);
248 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
);
249 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
);
251 void manager_transaction_unlink_job(Manager
*m
, Job
*j
, bool delete_dependencies
);
253 void manager_clear_jobs(Manager
*m
);
255 unsigned manager_dispatch_load_queue(Manager
*m
);
256 unsigned manager_dispatch_run_queue(Manager
*m
);
257 unsigned manager_dispatch_dbus_queue(Manager
*m
);
259 int manager_loop(Manager
*m
);
261 void manager_write_utmp_reboot(Manager
*m
);
262 void manager_write_utmp_runlevel(Manager
*m
, Unit
*t
);
264 void manager_dispatch_bus_name_owner_changed(Manager
*m
, const char *name
, const char* old_owner
, const char *new_owner
);
265 void manager_dispatch_bus_query_pid_done(Manager
*m
, const char *name
, pid_t pid
);
267 int manager_open_serialization(FILE **_f
);
269 int manager_serialize(Manager
*m
, FILE *f
, FDSet
*fds
);
270 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
);
272 int manager_reload(Manager
*m
);
274 const char *manager_running_as_to_string(ManagerRunningAs i
);
275 ManagerRunningAs
manager_running_as_from_string(const char *s
);