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 enum WatchType WatchType;
37 typedef struct Watch Watch;
39 typedef enum ManagerExitCode {
48 _MANAGER_EXIT_CODE_MAX,
49 _MANAGER_EXIT_CODE_INVALID = -1
52 typedef enum ManagerRunningAs {
55 _MANAGER_RUNNING_AS_MAX,
56 _MANAGER_RUNNING_AS_INVALID = -1
80 DBusTimeout *bus_timeout;
92 #include "path-lookup.h"
95 /* Note that the set of units we know of is allowed to be
96 * inconsistent. However the subset of it that is loaded may
97 * not, and the list of jobs may neither. */
99 /* Active jobs and units */
100 Hashmap *units; /* name string => Unit object n:1 */
101 Hashmap *jobs; /* job id => Job object 1:1 */
103 /* To make it easy to iterate through the units of a specific
104 * type we maintain a per type linked list */
105 LIST_HEAD(Unit, units_by_type[_UNIT_TYPE_MAX]);
107 /* Units that need to be loaded */
108 LIST_HEAD(Unit, load_queue); /* this is actually more a stack than a queue, but uh. */
110 /* Jobs that need to be run */
111 LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */
113 /* Units and jobs that have not yet been announced via
114 * D-Bus. When something about a job changes it is added here
115 * if it is not in there yet. This allows easy coalescing of
116 * D-Bus change signals. */
117 LIST_HEAD(Unit, dbus_unit_queue);
118 LIST_HEAD(Job, dbus_job_queue);
120 /* Units to remove */
121 LIST_HEAD(Unit, cleanup_queue);
123 /* Units to check when doing GC */
124 LIST_HEAD(Unit, gc_queue);
126 Hashmap *watch_pids; /* pid => Unit object n:1 */
135 unsigned n_snapshots;
137 LookupPaths lookup_paths;
138 Set *unit_path_cache;
141 char **default_controllers;
143 usec_t runtime_watchdog;
144 usec_t shutdown_watchdog;
146 dual_timestamp initrd_timestamp;
147 dual_timestamp startup_timestamp;
148 dual_timestamp finish_timestamp;
150 char *generator_unit_path;
152 /* Data specific to the device subsystem */
154 struct udev_monitor* udev_monitor;
156 Hashmap *devices_by_sysfs;
158 /* Data specific to the mount subsystem */
159 FILE *proc_self_mountinfo;
162 /* Data specific to the swap filesystem */
164 Hashmap *swaps_by_proc_swaps;
168 /* Data specific to the D-Bus subsystem */
169 DBusConnection *api_bus, *system_bus;
170 DBusServer *private_bus;
171 Set *bus_connections, *bus_connections_for_dispatch;
173 DBusMessage *queued_message; /* This is used during reloading:
174 * before the reload we queue the
175 * reply message here, and
176 * afterwards we send it */
177 DBusConnection *queued_message_connection; /* The connection to send the queued message on */
179 Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */
180 int32_t name_data_slot;
181 int32_t conn_data_slot;
182 int32_t subscribed_data_slot;
184 uint32_t current_job_id;
185 uint32_t default_unit_job_id;
187 /* Data specific to the Automount subsystem */
190 /* Data specific to the cgroup subsystem */
191 Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */
192 char *cgroup_hierarchy;
194 usec_t gc_queue_timestamp;
196 unsigned n_in_gc_queue;
198 /* Make sure the user cannot accidentally unmount our cgroup
208 ManagerRunningAs running_as;
209 ManagerExitCode exit_code:5;
211 bool dispatching_load_queue:1;
212 bool dispatching_run_queue:1;
213 bool dispatching_dbus_queue:1;
219 #ifdef HAVE_SYSV_COMPAT
225 ExecOutput default_std_output, default_std_error;
227 /* non-zero if we are reloading or reexecuting, */
230 unsigned n_installed_jobs;
231 unsigned n_failed_jobs;
234 int manager_new(ManagerRunningAs running_as, Manager **m);
235 void manager_free(Manager *m);
237 int manager_enumerate(Manager *m);
238 int manager_coldplug(Manager *m);
239 int manager_startup(Manager *m, FILE *serialization, FDSet *fds);
241 Job *manager_get_job(Manager *m, uint32_t id);
242 Unit *manager_get_unit(Manager *m, const char *name);
244 int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u);
245 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j);
247 int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret);
248 int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret);
250 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, DBusError *e, Job **_ret);
251 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, DBusError *e, Job **_ret);
253 void manager_dump_units(Manager *s, FILE *f, const char *prefix);
254 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix);
256 void manager_clear_jobs(Manager *m);
258 unsigned manager_dispatch_load_queue(Manager *m);
259 unsigned manager_dispatch_run_queue(Manager *m);
260 unsigned manager_dispatch_dbus_queue(Manager *m);
262 int manager_set_default_controllers(Manager *m, char **controllers);
264 int manager_loop(Manager *m);
266 void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner);
267 void manager_dispatch_bus_query_pid_done(Manager *m, const char *name, pid_t pid);
269 int manager_open_serialization(Manager *m, FILE **_f);
271 int manager_serialize(Manager *m, FILE *f, FDSet *fds);
272 int manager_deserialize(Manager *m, FILE *f, FDSet *fds);
274 int manager_reload(Manager *m);
276 bool manager_is_booting_or_shutting_down(Manager *m);
278 void manager_reset_failed(Manager *m);
280 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success);
281 void manager_send_unit_plymouth(Manager *m, Unit *u);
283 bool manager_unit_pending_inactive(Manager *m, const char *name);
285 void manager_check_finished(Manager *m);
287 void manager_run_generators(Manager *m);
288 void manager_undo_generators(Manager *m);
290 void manager_recheck_journal(Manager *m);
292 void manager_set_show_status(Manager *m, bool b);
293 bool manager_get_show_status(Manager *m);
295 const char *manager_running_as_to_string(ManagerRunningAs i);
296 ManagerRunningAs manager_running_as_from_string(const char *s);