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
74 DBusTimeout *bus_timeout;
86 #include "path-lookup.h"
89 /* Note that the set of units we know of is allowed to be
90 * inconsistent. However the subset of it that is loaded may
91 * not, and the list of jobs may neither. */
93 /* Active jobs and units */
94 Hashmap *units; /* name string => Unit object n:1 */
95 Hashmap *jobs; /* job id => Job object 1:1 */
97 /* To make it easy to iterate through the units of a specific
98 * type we maintain a per type linked list */
99 LIST_HEAD(Unit, units_by_type[_UNIT_TYPE_MAX]);
101 /* To optimize iteration of units that have requires_mounts_for set */
102 LIST_HEAD(Unit, has_requires_mounts_for);
104 /* Units that need to be loaded */
105 LIST_HEAD(Unit, load_queue); /* this is actually more a stack than a queue, but uh. */
107 /* Jobs that need to be run */
108 LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */
110 /* Units and jobs that have not yet been announced via
111 * D-Bus. When something about a job changes it is added here
112 * if it is not in there yet. This allows easy coalescing of
113 * D-Bus change signals. */
114 LIST_HEAD(Unit, dbus_unit_queue);
115 LIST_HEAD(Job, dbus_job_queue);
117 /* Units to remove */
118 LIST_HEAD(Unit, cleanup_queue);
120 /* Units to check when doing GC */
121 LIST_HEAD(Unit, gc_queue);
123 Hashmap *watch_pids; /* pid => Unit object n:1 */
129 Watch time_change_watch;
133 unsigned n_snapshots;
135 LookupPaths lookup_paths;
136 Set *unit_path_cache;
139 char **default_controllers;
141 usec_t runtime_watchdog;
142 usec_t shutdown_watchdog;
144 dual_timestamp firmware_timestamp;
145 dual_timestamp loader_timestamp;
146 dual_timestamp kernel_timestamp;
147 dual_timestamp initrd_timestamp;
148 dual_timestamp userspace_timestamp;
149 dual_timestamp finish_timestamp;
151 char *generator_unit_path;
152 char *generator_unit_path_early;
153 char *generator_unit_path_late;
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
206 SystemdRunningAs running_as;
207 ManagerExitCode exit_code:5;
209 bool dispatching_load_queue:1;
210 bool dispatching_run_queue:1;
211 bool dispatching_dbus_queue:1;
218 ExecOutput default_std_output, default_std_error;
220 struct rlimit *rlimit[RLIMIT_NLIMITS];
222 /* non-zero if we are reloading or reexecuting, */
225 unsigned n_installed_jobs;
226 unsigned n_failed_jobs;
228 /* Type=idle pipes */
232 char *switch_root_init;
235 int manager_new(SystemdRunningAs running_as, Manager **m);
236 void manager_free(Manager *m);
238 int manager_enumerate(Manager *m);
239 int manager_coldplug(Manager *m);
240 int manager_startup(Manager *m, FILE *serialization, FDSet *fds);
242 Job *manager_get_job(Manager *m, uint32_t id);
243 Unit *manager_get_unit(Manager *m, const char *name);
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);
249 int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u);
251 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, DBusError *e, Job **_ret);
252 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, DBusError *e, Job **_ret);
254 void manager_dump_units(Manager *s, FILE *f, const char *prefix);
255 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix);
257 void manager_clear_jobs(Manager *m);
259 unsigned manager_dispatch_load_queue(Manager *m);
260 unsigned manager_dispatch_run_queue(Manager *m);
261 unsigned manager_dispatch_dbus_queue(Manager *m);
263 int manager_set_default_controllers(Manager *m, char **controllers);
264 int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit);
266 int manager_loop(Manager *m);
268 void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner);
269 void manager_dispatch_bus_query_pid_done(Manager *m, const char *name, pid_t pid);
271 int manager_open_serialization(Manager *m, FILE **_f);
273 int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool serialize_jobs);
274 int manager_deserialize(Manager *m, FILE *f, FDSet *fds);
275 int manager_distribute_fds(Manager *m, FDSet *fds);
277 int manager_reload(Manager *m);
279 bool manager_is_booting_or_shutting_down(Manager *m);
281 void manager_reset_failed(Manager *m);
283 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success);
284 void manager_send_unit_plymouth(Manager *m, Unit *u);
286 bool manager_unit_pending_inactive(Manager *m, const char *name);
288 void manager_check_finished(Manager *m);
290 void manager_run_generators(Manager *m);
291 void manager_undo_generators(Manager *m);
293 void manager_recheck_journal(Manager *m);
295 void manager_set_show_status(Manager *m, bool b);
296 bool manager_get_show_status(Manager *m);
298 void watch_init(Watch *w);