1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
6 This file is part of systemd.
8 Copyright 2010 Lennart Poettering
10 systemd is free software; you can redistribute it and/or modify it
11 under the terms of the GNU Lesser General Public License as published by
12 the Free Software Foundation; either version 2.1 of the License, or
13 (at your option) any later version.
15 systemd is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public License
21 along with systemd; If not, see <http://www.gnu.org/licenses/>.
27 #include <dbus/dbus.h>
31 /* Enforce upper limit how many names we allow */
32 #define MANAGER_MAX_NAMES 131072 /* 128K */
34 typedef struct Manager Manager;
35 typedef enum WatchType WatchType;
36 typedef struct Watch Watch;
38 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;
154 char *generator_unit_path_early;
155 char *generator_unit_path_late;
157 /* Data specific to the device subsystem */
159 struct udev_monitor* udev_monitor;
161 Hashmap *devices_by_sysfs;
163 /* Data specific to the mount subsystem */
164 FILE *proc_self_mountinfo;
167 /* Data specific to the swap filesystem */
169 Hashmap *swaps_by_proc_swaps;
173 /* Data specific to the D-Bus subsystem */
174 DBusConnection *api_bus, *system_bus;
175 DBusServer *private_bus;
176 Set *bus_connections, *bus_connections_for_dispatch;
178 DBusMessage *queued_message; /* This is used during reloading:
179 * before the reload we queue the
180 * reply message here, and
181 * afterwards we send it */
182 DBusConnection *queued_message_connection; /* The connection to send the queued message on */
184 Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */
185 int32_t name_data_slot;
186 int32_t conn_data_slot;
187 int32_t subscribed_data_slot;
189 uint32_t current_job_id;
190 uint32_t default_unit_job_id;
192 /* Data specific to the Automount subsystem */
195 /* Data specific to the cgroup subsystem */
196 Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */
197 char *cgroup_hierarchy;
199 usec_t gc_queue_timestamp;
201 unsigned n_in_gc_queue;
203 /* Make sure the user cannot accidentally unmount our cgroup
213 ManagerRunningAs running_as;
214 ManagerExitCode exit_code:5;
216 bool dispatching_load_queue:1;
217 bool dispatching_run_queue:1;
218 bool dispatching_dbus_queue:1;
225 ExecOutput default_std_output, default_std_error;
227 struct rlimit *rlimit[RLIMIT_NLIMITS];
229 /* non-zero if we are reloading or reexecuting, */
232 unsigned n_installed_jobs;
233 unsigned n_failed_jobs;
235 /* Type=idle pipes */
239 char *switch_root_init;
242 int manager_new(ManagerRunningAs running_as, Manager **m);
243 void manager_free(Manager *m);
245 int manager_enumerate(Manager *m);
246 int manager_coldplug(Manager *m);
247 int manager_startup(Manager *m, FILE *serialization, FDSet *fds);
249 Job *manager_get_job(Manager *m, uint32_t id);
250 Unit *manager_get_unit(Manager *m, const char *name);
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);
256 int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u);
258 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, DBusError *e, Job **_ret);
259 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, DBusError *e, Job **_ret);
261 void manager_dump_units(Manager *s, FILE *f, const char *prefix);
262 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix);
264 void manager_clear_jobs(Manager *m);
266 unsigned manager_dispatch_load_queue(Manager *m);
267 unsigned manager_dispatch_run_queue(Manager *m);
268 unsigned manager_dispatch_dbus_queue(Manager *m);
270 int manager_set_default_controllers(Manager *m, char **controllers);
271 int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit);
273 int manager_loop(Manager *m);
275 void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner);
276 void manager_dispatch_bus_query_pid_done(Manager *m, const char *name, pid_t pid);
278 int manager_open_serialization(Manager *m, FILE **_f);
280 int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool serialize_jobs);
281 int manager_deserialize(Manager *m, FILE *f, FDSet *fds);
283 int manager_reload(Manager *m);
285 bool manager_is_booting_or_shutting_down(Manager *m);
287 void manager_reset_failed(Manager *m);
289 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success);
290 void manager_send_unit_plymouth(Manager *m, Unit *u);
292 bool manager_unit_pending_inactive(Manager *m, const char *name);
294 void manager_check_finished(Manager *m);
296 void manager_run_generators(Manager *m);
297 void manager_undo_generators(Manager *m);
299 void manager_recheck_journal(Manager *m);
301 void manager_set_show_status(Manager *m, bool b);
302 bool manager_get_show_status(Manager *m);
304 const char *manager_running_as_to_string(ManagerRunningAs i);
305 ManagerRunningAs manager_running_as_from_string(const char *s);