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
65 WATCH_JOBS_IN_PROGRESS
75 DBusTimeout *bus_timeout;
87 #include "path-lookup.h"
90 /* Note that the set of units we know of is allowed to be
91 * inconsistent. However the subset of it that is loaded may
92 * not, and the list of jobs may neither. */
94 /* Active jobs and units */
95 Hashmap *units; /* name string => Unit object n:1 */
96 Hashmap *jobs; /* job id => Job object 1:1 */
98 /* To make it easy to iterate through the units of a specific
99 * type we maintain a per type linked list */
100 LIST_HEAD(Unit, units_by_type[_UNIT_TYPE_MAX]);
102 /* To optimize iteration of units that have requires_mounts_for set */
103 LIST_HEAD(Unit, has_requires_mounts_for);
105 /* Units that need to be loaded */
106 LIST_HEAD(Unit, load_queue); /* this is actually more a stack than a queue, but uh. */
108 /* Jobs that need to be run */
109 LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */
111 /* Units and jobs that have not yet been announced via
112 * D-Bus. When something about a job changes it is added here
113 * if it is not in there yet. This allows easy coalescing of
114 * D-Bus change signals. */
115 LIST_HEAD(Unit, dbus_unit_queue);
116 LIST_HEAD(Job, dbus_job_queue);
118 /* Units to remove */
119 LIST_HEAD(Unit, cleanup_queue);
121 /* Units to check when doing GC */
122 LIST_HEAD(Unit, gc_queue);
124 Hashmap *watch_pids; /* pid => Unit object n:1 */
130 Watch time_change_watch;
131 Watch jobs_in_progress_watch;
135 unsigned n_snapshots;
137 LookupPaths lookup_paths;
138 Set *unit_path_cache;
141 char **default_controllers;
143 usec_t runtime_watchdog;
144 usec_t shutdown_watchdog;
146 dual_timestamp firmware_timestamp;
147 dual_timestamp loader_timestamp;
148 dual_timestamp kernel_timestamp;
149 dual_timestamp initrd_timestamp;
150 dual_timestamp userspace_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
208 SystemdRunningAs running_as;
209 ManagerExitCode exit_code:5;
211 bool dispatching_load_queue:1;
212 bool dispatching_run_queue:1;
213 bool dispatching_dbus_queue:1;
220 ExecOutput default_std_output, default_std_error;
222 struct rlimit *rlimit[RLIMIT_NLIMITS];
224 /* non-zero if we are reloading or reexecuting, */
227 unsigned n_installed_jobs;
228 unsigned n_failed_jobs;
230 /* Jobs in progress watching */
231 unsigned n_running_jobs;
232 unsigned n_on_console;
233 unsigned jobs_in_progress_iteration;
235 /* Type=idle pipes */
239 char *switch_root_init;
242 int manager_new(SystemdRunningAs 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);
282 int manager_distribute_fds(Manager *m, FDSet *fds);
284 int manager_reload(Manager *m);
286 void manager_reset_failed(Manager *m);
288 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success);
289 void manager_send_unit_plymouth(Manager *m, Unit *u);
291 bool manager_unit_pending_inactive(Manager *m, const char *name);
293 void manager_check_finished(Manager *m);
295 void manager_run_generators(Manager *m);
296 void manager_undo_generators(Manager *m);
298 void manager_recheck_journal(Manager *m);
300 void manager_set_show_status(Manager *m, bool b);
301 void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...);
303 void watch_init(Watch *w);