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 {
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 /* Note that the set of units we know of is allowed to be
97 * inconsistent. However the subset of it that is loaded may
98 * not, and the list of jobs may neither. */
100 /* Active jobs and units */
101 Hashmap *units; /* name string => Unit object n:1 */
102 Hashmap *jobs; /* job id => Job object 1:1 */
104 /* To make it easy to iterate through the units of a specific
105 * type we maintain a per type linked list */
106 LIST_HEAD(Unit, units_by_type[_UNIT_TYPE_MAX]);
108 /* To optimize iteration of units that have requires_mounts_for set */
109 LIST_HEAD(Unit, has_requires_mounts_for);
111 /* Units that need to be loaded */
112 LIST_HEAD(Unit, load_queue); /* this is actually more a stack than a queue, but uh. */
114 /* Jobs that need to be run */
115 LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */
117 /* Units and jobs that have not yet been announced via
118 * D-Bus. When something about a job changes it is added here
119 * if it is not in there yet. This allows easy coalescing of
120 * D-Bus change signals. */
121 LIST_HEAD(Unit, dbus_unit_queue);
122 LIST_HEAD(Job, dbus_job_queue);
124 /* Units to remove */
125 LIST_HEAD(Unit, cleanup_queue);
127 /* Units to check when doing GC */
128 LIST_HEAD(Unit, gc_queue);
130 Hashmap *watch_pids; /* pid => Unit object n:1 */
139 unsigned n_snapshots;
141 LookupPaths lookup_paths;
142 Set *unit_path_cache;
145 char **default_controllers;
147 usec_t runtime_watchdog;
148 usec_t shutdown_watchdog;
150 dual_timestamp initrd_timestamp;
151 dual_timestamp startup_timestamp;
152 dual_timestamp finish_timestamp;
154 char *generator_unit_path;
155 char *generator_unit_path_early;
156 char *generator_unit_path_late;
158 /* Data specific to the device subsystem */
160 struct udev_monitor* udev_monitor;
162 Hashmap *devices_by_sysfs;
164 /* Data specific to the mount subsystem */
165 FILE *proc_self_mountinfo;
168 /* Data specific to the swap filesystem */
170 Hashmap *swaps_by_proc_swaps;
174 /* Data specific to the D-Bus subsystem */
175 DBusConnection *api_bus, *system_bus;
176 DBusServer *private_bus;
177 Set *bus_connections, *bus_connections_for_dispatch;
179 DBusMessage *queued_message; /* This is used during reloading:
180 * before the reload we queue the
181 * reply message here, and
182 * afterwards we send it */
183 DBusConnection *queued_message_connection; /* The connection to send the queued message on */
185 Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */
186 int32_t name_data_slot;
187 int32_t conn_data_slot;
188 int32_t subscribed_data_slot;
190 uint32_t current_job_id;
191 uint32_t default_unit_job_id;
193 /* Data specific to the Automount subsystem */
196 /* Data specific to the cgroup subsystem */
197 Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */
198 char *cgroup_hierarchy;
200 usec_t gc_queue_timestamp;
202 unsigned n_in_gc_queue;
204 /* Make sure the user cannot accidentally unmount our cgroup
214 ManagerRunningAs running_as;
215 ManagerExitCode exit_code:5;
217 bool dispatching_load_queue:1;
218 bool dispatching_run_queue:1;
219 bool dispatching_dbus_queue:1;
226 ExecOutput default_std_output, default_std_error;
228 struct rlimit *rlimit[RLIMIT_NLIMITS];
230 /* non-zero if we are reloading or reexecuting, */
233 unsigned n_installed_jobs;
234 unsigned n_failed_jobs;
236 /* Type=idle pipes */
240 char *switch_root_init;
243 int manager_new(ManagerRunningAs running_as, Manager **m);
244 void manager_free(Manager *m);
246 int manager_enumerate(Manager *m);
247 int manager_coldplug(Manager *m);
248 int manager_startup(Manager *m, FILE *serialization, FDSet *fds);
250 Job *manager_get_job(Manager *m, uint32_t id);
251 Unit *manager_get_unit(Manager *m, const char *name);
253 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j);
255 int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret);
256 int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret);
257 int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u);
259 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, DBusError *e, Job **_ret);
260 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, DBusError *e, Job **_ret);
262 void manager_dump_units(Manager *s, FILE *f, const char *prefix);
263 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix);
265 void manager_clear_jobs(Manager *m);
267 unsigned manager_dispatch_load_queue(Manager *m);
268 unsigned manager_dispatch_run_queue(Manager *m);
269 unsigned manager_dispatch_dbus_queue(Manager *m);
271 int manager_set_default_controllers(Manager *m, char **controllers);
272 int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit);
274 int manager_loop(Manager *m);
276 void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner);
277 void manager_dispatch_bus_query_pid_done(Manager *m, const char *name, pid_t pid);
279 int manager_open_serialization(Manager *m, FILE **_f);
281 int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool serialize_jobs);
282 int manager_deserialize(Manager *m, FILE *f, FDSet *fds);
284 int manager_reload(Manager *m);
286 bool manager_is_booting_or_shutting_down(Manager *m);
288 void manager_reset_failed(Manager *m);
290 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success);
291 void manager_send_unit_plymouth(Manager *m, Unit *u);
293 bool manager_unit_pending_inactive(Manager *m, const char *name);
295 void manager_check_finished(Manager *m);
297 void manager_run_generators(Manager *m);
298 void manager_undo_generators(Manager *m);
300 void manager_recheck_journal(Manager *m);
302 void manager_set_show_status(Manager *m, bool b);
303 bool manager_get_show_status(Manager *m);
305 const char *manager_running_as_to_string(ManagerRunningAs i);
306 ManagerRunningAs manager_running_as_from_string(const char *s);