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
73 DBusTimeout *bus_timeout;
85 #include "path-lookup.h"
88 /* Note that the set of units we know of is allowed to be
89 * inconsistent. However the subset of it that is loaded may
90 * not, and the list of jobs may neither. */
92 /* Active jobs and units */
93 Hashmap *units; /* name string => Unit object n:1 */
94 Hashmap *jobs; /* job id => Job object 1:1 */
96 /* To make it easy to iterate through the units of a specific
97 * type we maintain a per type linked list */
98 LIST_HEAD(Unit, units_by_type[_UNIT_TYPE_MAX]);
100 /* To optimize iteration of units that have requires_mounts_for set */
101 LIST_HEAD(Unit, has_requires_mounts_for);
103 /* Units that need to be loaded */
104 LIST_HEAD(Unit, load_queue); /* this is actually more a stack than a queue, but uh. */
106 /* Jobs that need to be run */
107 LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */
109 /* Units and jobs that have not yet been announced via
110 * D-Bus. When something about a job changes it is added here
111 * if it is not in there yet. This allows easy coalescing of
112 * D-Bus change signals. */
113 LIST_HEAD(Unit, dbus_unit_queue);
114 LIST_HEAD(Job, dbus_job_queue);
116 /* Units to remove */
117 LIST_HEAD(Unit, cleanup_queue);
119 /* Units to check when doing GC */
120 LIST_HEAD(Unit, gc_queue);
122 Hashmap *watch_pids; /* pid => Unit object n:1 */
131 unsigned n_snapshots;
133 LookupPaths lookup_paths;
134 Set *unit_path_cache;
137 char **default_controllers;
139 usec_t runtime_watchdog;
140 usec_t shutdown_watchdog;
142 dual_timestamp firmware_timestamp;
143 dual_timestamp loader_timestamp;
144 dual_timestamp kernel_timestamp;
145 dual_timestamp initrd_timestamp;
146 dual_timestamp userspace_timestamp;
147 dual_timestamp finish_timestamp;
149 char *generator_unit_path;
150 char *generator_unit_path_early;
151 char *generator_unit_path_late;
153 /* Data specific to the device subsystem */
155 struct udev_monitor* udev_monitor;
157 Hashmap *devices_by_sysfs;
159 /* Data specific to the mount subsystem */
160 FILE *proc_self_mountinfo;
163 /* Data specific to the swap filesystem */
165 Hashmap *swaps_by_proc_swaps;
169 /* Data specific to the D-Bus subsystem */
170 DBusConnection *api_bus, *system_bus;
171 DBusServer *private_bus;
172 Set *bus_connections, *bus_connections_for_dispatch;
174 DBusMessage *queued_message; /* This is used during reloading:
175 * before the reload we queue the
176 * reply message here, and
177 * afterwards we send it */
178 DBusConnection *queued_message_connection; /* The connection to send the queued message on */
180 Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */
181 int32_t name_data_slot;
182 int32_t conn_data_slot;
183 int32_t subscribed_data_slot;
185 uint32_t current_job_id;
186 uint32_t default_unit_job_id;
188 /* Data specific to the Automount subsystem */
191 /* Data specific to the cgroup subsystem */
192 Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */
193 char *cgroup_hierarchy;
195 usec_t gc_queue_timestamp;
197 unsigned n_in_gc_queue;
199 /* Make sure the user cannot accidentally unmount our cgroup
209 SystemdRunningAs running_as;
210 ManagerExitCode exit_code:5;
212 bool dispatching_load_queue:1;
213 bool dispatching_run_queue:1;
214 bool dispatching_dbus_queue:1;
221 ExecOutput default_std_output, default_std_error;
223 struct rlimit *rlimit[RLIMIT_NLIMITS];
225 /* non-zero if we are reloading or reexecuting, */
228 unsigned n_installed_jobs;
229 unsigned n_failed_jobs;
231 /* Type=idle pipes */
235 char *switch_root_init;
238 int manager_new(SystemdRunningAs 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_job_from_dbus_path(Manager *m, const char *s, Job **_j);
250 int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret);
251 int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret);
252 int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u);
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);
267 int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit);
269 int manager_loop(Manager *m);
271 void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner);
272 void manager_dispatch_bus_query_pid_done(Manager *m, const char *name, pid_t pid);
274 int manager_open_serialization(Manager *m, FILE **_f);
276 int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool serialize_jobs);
277 int manager_deserialize(Manager *m, FILE *f, FDSet *fds);
279 int manager_reload(Manager *m);
281 bool manager_is_booting_or_shutting_down(Manager *m);
283 void manager_reset_failed(Manager *m);
285 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success);
286 void manager_send_unit_plymouth(Manager *m, Unit *u);
288 bool manager_unit_pending_inactive(Manager *m, const char *name);
290 void manager_check_finished(Manager *m);
292 void manager_run_generators(Manager *m);
293 void manager_undo_generators(Manager *m);
295 void manager_recheck_journal(Manager *m);
297 void manager_set_show_status(Manager *m, bool b);
298 bool manager_get_show_status(Manager *m);