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 /* To optimize iteration of units that have requires_mounts_for set */
108 LIST_HEAD(Unit, has_requires_mounts_for);
110 /* Units that need to be loaded */
111 LIST_HEAD(Unit, load_queue); /* this is actually more a stack than a queue, but uh. */
113 /* Jobs that need to be run */
114 LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */
116 /* Units and jobs that have not yet been announced via
117 * D-Bus. When something about a job changes it is added here
118 * if it is not in there yet. This allows easy coalescing of
119 * D-Bus change signals. */
120 LIST_HEAD(Unit, dbus_unit_queue);
121 LIST_HEAD(Job, dbus_job_queue);
123 /* Units to remove */
124 LIST_HEAD(Unit, cleanup_queue);
126 /* Units to check when doing GC */
127 LIST_HEAD(Unit, gc_queue);
129 Hashmap *watch_pids; /* pid => Unit object n:1 */
138 unsigned n_snapshots;
140 LookupPaths lookup_paths;
141 Set *unit_path_cache;
144 char **default_controllers;
146 usec_t runtime_watchdog;
147 usec_t shutdown_watchdog;
149 dual_timestamp initrd_timestamp;
150 dual_timestamp startup_timestamp;
151 dual_timestamp finish_timestamp;
153 char *generator_unit_path;
155 /* Data specific to the device subsystem */
157 struct udev_monitor* udev_monitor;
159 Hashmap *devices_by_sysfs;
161 /* Data specific to the mount subsystem */
162 FILE *proc_self_mountinfo;
165 /* Data specific to the swap filesystem */
167 Hashmap *swaps_by_proc_swaps;
171 /* Data specific to the D-Bus subsystem */
172 DBusConnection *api_bus, *system_bus;
173 DBusServer *private_bus;
174 Set *bus_connections, *bus_connections_for_dispatch;
176 DBusMessage *queued_message; /* This is used during reloading:
177 * before the reload we queue the
178 * reply message here, and
179 * afterwards we send it */
180 DBusConnection *queued_message_connection; /* The connection to send the queued message on */
182 Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */
183 int32_t name_data_slot;
184 int32_t conn_data_slot;
185 int32_t subscribed_data_slot;
187 uint32_t current_job_id;
188 uint32_t default_unit_job_id;
190 /* Data specific to the Automount subsystem */
193 /* Data specific to the cgroup subsystem */
194 Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */
195 char *cgroup_hierarchy;
197 usec_t gc_queue_timestamp;
199 unsigned n_in_gc_queue;
201 /* Make sure the user cannot accidentally unmount our cgroup
211 ManagerRunningAs running_as;
212 ManagerExitCode exit_code:5;
214 bool dispatching_load_queue:1;
215 bool dispatching_run_queue:1;
216 bool dispatching_dbus_queue:1;
222 #ifdef HAVE_SYSV_COMPAT
226 ExecOutput default_std_output, default_std_error;
228 /* non-zero if we are reloading or reexecuting, */
231 unsigned n_installed_jobs;
232 unsigned n_failed_jobs;
234 /* Type=idle pipes */
238 int manager_new(ManagerRunningAs running_as, Manager **m);
239 void manager_free(Manager *m);
241 int manager_enumerate(Manager *m);
242 int manager_coldplug(Manager *m);
243 int manager_startup(Manager *m, FILE *serialization, FDSet *fds);
245 Job *manager_get_job(Manager *m, uint32_t id);
246 Unit *manager_get_unit(Manager *m, const char *name);
248 int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u);
249 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j);
251 int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret);
252 int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret);
254 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, DBusError *e, Job **_ret);
255 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, DBusError *e, Job **_ret);
257 void manager_dump_units(Manager *s, FILE *f, const char *prefix);
258 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix);
260 void manager_clear_jobs(Manager *m);
262 unsigned manager_dispatch_load_queue(Manager *m);
263 unsigned manager_dispatch_run_queue(Manager *m);
264 unsigned manager_dispatch_dbus_queue(Manager *m);
266 int manager_set_default_controllers(Manager *m, char **controllers);
268 int manager_loop(Manager *m);
270 void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner);
271 void manager_dispatch_bus_query_pid_done(Manager *m, const char *name, pid_t pid);
273 int manager_open_serialization(Manager *m, FILE **_f);
275 int manager_serialize(Manager *m, FILE *f, FDSet *fds);
276 int manager_deserialize(Manager *m, FILE *f, FDSet *fds);
278 int manager_reload(Manager *m);
280 bool manager_is_booting_or_shutting_down(Manager *m);
282 void manager_reset_failed(Manager *m);
284 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success);
285 void manager_send_unit_plymouth(Manager *m, Unit *u);
287 bool manager_unit_pending_inactive(Manager *m, const char *name);
289 void manager_check_finished(Manager *m);
291 void manager_run_generators(Manager *m);
292 void manager_undo_generators(Manager *m);
294 void manager_recheck_journal(Manager *m);
296 void manager_set_show_status(Manager *m, bool b);
297 bool manager_get_show_status(Manager *m);
299 const char *manager_running_as_to_string(ManagerRunningAs i);
300 ManagerRunningAs manager_running_as_from_string(const char *s);