1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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 Lesser General Public License as published by
13 the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
21 You should have received a copy of the GNU Lesser 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 131072 /* 128K */
35 typedef struct Manager Manager;
36 typedef struct Transaction Transaction;
37 typedef enum WatchType WatchType;
38 typedef struct Watch Watch;
40 typedef enum ManagerExitCode {
49 _MANAGER_EXIT_CODE_MAX,
50 _MANAGER_EXIT_CODE_INVALID = -1
53 typedef enum ManagerRunningAs {
56 _MANAGER_RUNNING_AS_MAX,
57 _MANAGER_RUNNING_AS_INVALID = -1
81 DBusTimeout *bus_timeout;
93 #include "path-lookup.h"
96 /* Jobs to be added */
97 Hashmap *jobs; /* Unit object => Job object list 1:1 */
98 JobDependency *anchor;
102 /* Note that the set of units we know of is allowed to be
103 * inconsistent. However the subset of it that is loaded may
104 * not, and the list of jobs may neither. */
106 /* Active jobs and units */
107 Hashmap *units; /* name string => Unit object n:1 */
108 Hashmap *jobs; /* job id => Job object 1:1 */
110 /* To make it easy to iterate through the units of a specific
111 * type we maintain a per type linked list */
112 LIST_HEAD(Unit, units_by_type[_UNIT_TYPE_MAX]);
114 /* Units that need to be loaded */
115 LIST_HEAD(Unit, load_queue); /* this is actually more a stack than a queue, but uh. */
117 /* Jobs that need to be run */
118 LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */
120 /* Units and jobs that have not yet been announced via
121 * D-Bus. When something about a job changes it is added here
122 * if it is not in there yet. This allows easy coalescing of
123 * D-Bus change signals. */
124 LIST_HEAD(Unit, dbus_unit_queue);
125 LIST_HEAD(Job, dbus_job_queue);
127 /* Units to remove */
128 LIST_HEAD(Unit, cleanup_queue);
130 /* Units to check when doing GC */
131 LIST_HEAD(Unit, gc_queue);
133 Hashmap *watch_pids; /* pid => Unit object n:1 */
142 unsigned n_snapshots;
144 LookupPaths lookup_paths;
145 Set *unit_path_cache;
148 char **default_controllers;
150 usec_t runtime_watchdog;
151 usec_t shutdown_watchdog;
153 dual_timestamp initrd_timestamp;
154 dual_timestamp startup_timestamp;
155 dual_timestamp finish_timestamp;
157 char *generator_unit_path;
159 /* Data specific to the device subsystem */
161 struct udev_monitor* udev_monitor;
163 Hashmap *devices_by_sysfs;
165 /* Data specific to the mount subsystem */
166 FILE *proc_self_mountinfo;
169 /* Data specific to the swap filesystem */
171 Hashmap *swaps_by_proc_swaps;
175 /* Data specific to the D-Bus subsystem */
176 DBusConnection *api_bus, *system_bus;
177 DBusServer *private_bus;
178 Set *bus_connections, *bus_connections_for_dispatch;
180 DBusMessage *queued_message; /* This is used during reloading:
181 * before the reload we queue the
182 * reply message here, and
183 * afterwards we send it */
184 DBusConnection *queued_message_connection; /* The connection to send the queued message on */
186 Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */
187 int32_t name_data_slot;
188 int32_t conn_data_slot;
189 int32_t subscribed_data_slot;
191 uint32_t current_job_id;
192 uint32_t default_unit_job_id;
194 /* Data specific to the Automount subsystem */
197 /* Data specific to the cgroup subsystem */
198 Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */
199 char *cgroup_hierarchy;
201 usec_t gc_queue_timestamp;
203 unsigned n_in_gc_queue;
205 /* Make sure the user cannot accidentally unmount our cgroup
215 ManagerRunningAs running_as;
216 ManagerExitCode exit_code:5;
218 bool dispatching_load_queue:1;
219 bool dispatching_run_queue:1;
220 bool dispatching_dbus_queue:1;
226 #ifdef HAVE_SYSV_COMPAT
232 ExecOutput default_std_output, default_std_error;
234 /* non-zero if we are reloading or reexecuting, */
237 unsigned n_installed_jobs;
238 unsigned n_failed_jobs;
241 int manager_new(ManagerRunningAs running_as, Manager **m);
242 void manager_free(Manager *m);
244 int manager_enumerate(Manager *m);
245 int manager_coldplug(Manager *m);
246 int manager_startup(Manager *m, FILE *serialization, FDSet *fds);
248 Job *manager_get_job(Manager *m, uint32_t id);
249 Unit *manager_get_unit(Manager *m, const char *name);
251 int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u);
252 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j);
254 int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret);
255 int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret);
257 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, DBusError *e, Job **_ret);
258 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, DBusError *e, Job **_ret);
260 void manager_dump_units(Manager *s, FILE *f, const char *prefix);
261 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix);
263 void manager_clear_jobs(Manager *m);
265 unsigned manager_dispatch_load_queue(Manager *m);
266 unsigned manager_dispatch_run_queue(Manager *m);
267 unsigned manager_dispatch_dbus_queue(Manager *m);
269 int manager_set_default_controllers(Manager *m, char **controllers);
271 int manager_loop(Manager *m);
273 void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner);
274 void manager_dispatch_bus_query_pid_done(Manager *m, const char *name, pid_t pid);
276 int manager_open_serialization(Manager *m, FILE **_f);
278 int manager_serialize(Manager *m, FILE *f, FDSet *fds);
279 int manager_deserialize(Manager *m, FILE *f, FDSet *fds);
281 int manager_reload(Manager *m);
283 bool manager_is_booting_or_shutting_down(Manager *m);
285 void manager_reset_failed(Manager *m);
287 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success);
288 void manager_send_unit_plymouth(Manager *m, Unit *u);
290 bool manager_unit_pending_inactive(Manager *m, const char *name);
292 void manager_check_finished(Manager *m);
294 void manager_run_generators(Manager *m);
295 void manager_undo_generators(Manager *m);
297 void manager_recheck_journal(Manager *m);
299 void manager_set_show_status(Manager *m, bool b);
300 bool manager_get_show_status(Manager *m);
302 const char *manager_running_as_to_string(ManagerRunningAs i);
303 ManagerRunningAs manager_running_as_from_string(const char *s);