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
{
51 _MANAGER_RUNNING_AS_MAX
,
52 _MANAGER_RUNNING_AS_INVALID
= -1
73 DBusTimeout
*bus_timeout
;
85 #include "path-lookup.h"
88 uint32_t current_job_id
;
90 /* Note that the set of units we know of is allowed to be
91 * incosistent. However the subset of it that is loaded may
92 * not, and the list of jobs may neither. */
94 /* Active jobs and units */
95 Hashmap
*units
; /* name string => Unit object n:1 */
96 Hashmap
*jobs
; /* job id => Job object 1:1 */
98 /* To make it easy to iterate through the units of a specific
99 * type we maintain a per type linked list */
100 LIST_HEAD(Meta
, units_per_type
[_UNIT_TYPE_MAX
]);
102 /* Units that need to be loaded */
103 LIST_HEAD(Meta
, load_queue
); /* this is actually more a stack than a queue, but uh. */
105 /* Jobs that need to be run */
106 LIST_HEAD(Job
, run_queue
); /* more a stack than a queue, too */
108 /* Units and jobs that have not yet been announced via
109 * D-Bus. When something about a job changes it is added here
110 * if it is not in there yet. This allows easy coalescing of
111 * D-Bus change signals. */
112 LIST_HEAD(Meta
, dbus_unit_queue
);
113 LIST_HEAD(Job
, dbus_job_queue
);
115 /* Units to remove */
116 LIST_HEAD(Meta
, cleanup_queue
);
118 /* Units to check when doing GC */
119 LIST_HEAD(Meta
, gc_queue
);
121 /* Jobs to be added */
122 Hashmap
*transaction_jobs
; /* Unit object => Job object list 1:1 */
123 JobDependency
*transaction_anchor
;
125 Hashmap
*watch_pids
; /* pid => Unit object n:1 */
134 unsigned n_snapshots
;
136 LookupPaths lookup_paths
;
140 dual_timestamp startup_timestamp
;
142 /* Data specific to the device subsystem */
144 struct udev_monitor
* udev_monitor
;
147 /* Data specific to the mount subsystem */
148 FILE *proc_self_mountinfo
;
151 /* Data specific to the swap filesystem */
154 /* Data specific to the D-Bus subsystem */
155 DBusConnection
*api_bus
, *system_bus
;
156 DBusServer
*private_bus
;
157 Set
*bus_connections
, *bus_connections_for_dispatch
;
159 DBusMessage
*queued_message
; /* This is used during reloading:
160 * before the reload we queue the
161 * reply message here, and
162 * afterwards we send it */
164 Hashmap
*watch_bus
; /* D-Bus names => Unit object n:1 */
165 int32_t name_data_slot
;
166 int32_t subscribed_data_slot
;
168 /* Data specific to the Automount subsystem */
171 /* Data specific to the cgroup subsystem */
172 Hashmap
*cgroup_bondings
; /* path string => CGroupBonding object 1:n */
173 char *cgroup_controller
;
174 char *cgroup_mount_point
;
175 char *cgroup_hierarchy
;
177 usec_t gc_queue_timestamp
;
179 unsigned n_in_gc_queue
;
181 /* Make sure the user cannot accidentaly unmount our cgroup
186 ManagerRunningAs running_as
;
187 ManagerExitCode exit_code
:4;
189 bool dispatching_load_queue
:1;
190 bool dispatching_run_queue
:1;
191 bool dispatching_dbus_queue
:1;
193 bool utmp_reboot_written
:1;
199 int manager_new(ManagerRunningAs running_as
, Manager
**m
);
200 void manager_free(Manager
*m
);
202 int manager_enumerate(Manager
*m
);
203 int manager_coldplug(Manager
*m
);
204 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
);
206 Job
*manager_get_job(Manager
*m
, uint32_t id
);
207 Unit
*manager_get_unit(Manager
*m
, const char *name
);
209 int manager_get_unit_from_dbus_path(Manager
*m
, const char *s
, Unit
**_u
);
210 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
);
212 int manager_load_unit_prepare(Manager
*m
, const char *name
, const char *path
, Unit
**_ret
);
213 int manager_load_unit(Manager
*m
, const char *name
, const char *path
, Unit
**_ret
);
215 int manager_add_job(Manager
*m
, JobType type
, Unit
*unit
, JobMode mode
, bool force
, Job
**_ret
);
216 int manager_add_job_by_name(Manager
*m
, JobType type
, const char *name
, JobMode mode
, bool force
, Job
**_ret
);
218 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
);
219 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
);
221 void manager_transaction_unlink_job(Manager
*m
, Job
*j
, bool delete_dependencies
);
223 void manager_clear_jobs(Manager
*m
);
225 unsigned manager_dispatch_load_queue(Manager
*m
);
226 unsigned manager_dispatch_run_queue(Manager
*m
);
227 unsigned manager_dispatch_dbus_queue(Manager
*m
);
229 int manager_loop(Manager
*m
);
231 void manager_write_utmp_reboot(Manager
*m
);
232 void manager_write_utmp_runlevel(Manager
*m
, Unit
*t
);
234 void manager_dispatch_bus_name_owner_changed(Manager
*m
, const char *name
, const char* old_owner
, const char *new_owner
);
235 void manager_dispatch_bus_query_pid_done(Manager
*m
, const char *name
, pid_t pid
);
237 int manager_open_serialization(FILE **_f
);
239 int manager_serialize(Manager
*m
, FILE *f
, FDSet
*fds
);
240 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
);
242 int manager_reload(Manager
*m
);
244 bool manager_is_booting_or_shutting_down(Manager
*m
);
246 const char *manager_running_as_to_string(ManagerRunningAs i
);
247 ManagerRunningAs
manager_running_as_from_string(const char *s
);