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 General Public License as published by
13 the Free Software Foundation; either version 2 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 General Public License for more details.
21 You should have received a copy of the GNU 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 {
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(Meta, units_per_type[_UNIT_TYPE_MAX]);
107 /* Units that need to be loaded */
108 LIST_HEAD(Meta, load_queue); /* this is actually more a stack than a queue, but uh. */
110 /* Jobs that need to be run */
111 LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */
113 /* Units and jobs that have not yet been announced via
114 * D-Bus. When something about a job changes it is added here
115 * if it is not in there yet. This allows easy coalescing of
116 * D-Bus change signals. */
117 LIST_HEAD(Meta, dbus_unit_queue);
118 LIST_HEAD(Job, dbus_job_queue);
120 /* Units to remove */
121 LIST_HEAD(Meta, cleanup_queue);
123 /* Units to check when doing GC */
124 LIST_HEAD(Meta, gc_queue);
126 /* Jobs to be added */
127 Hashmap *transaction_jobs; /* Unit object => Job object list 1:1 */
128 JobDependency *transaction_anchor;
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 dual_timestamp initrd_timestamp;
148 dual_timestamp startup_timestamp;
149 dual_timestamp finish_timestamp;
151 char *generator_unit_path;
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 subscribed_data_slot;
184 uint32_t current_job_id;
186 /* Data specific to the Automount subsystem */
189 /* Data specific to the cgroup subsystem */
190 Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */
191 char *cgroup_hierarchy;
193 usec_t gc_queue_timestamp;
195 unsigned n_in_gc_queue;
197 /* Make sure the user cannot accidentally unmount our cgroup
207 ManagerRunningAs running_as;
208 ManagerExitCode exit_code:5;
210 bool dispatching_load_queue:1;
211 bool dispatching_run_queue:1;
212 bool dispatching_dbus_queue:1;
218 #ifdef HAVE_SYSV_COMPAT
224 ExecOutput default_std_output, default_std_error;
228 unsigned n_installed_jobs;
229 unsigned n_failed_jobs;
232 int manager_new(ManagerRunningAs running_as, Manager **m);
233 void manager_free(Manager *m);
235 int manager_enumerate(Manager *m);
236 int manager_coldplug(Manager *m);
237 int manager_startup(Manager *m, FILE *serialization, FDSet *fds);
239 Job *manager_get_job(Manager *m, uint32_t id);
240 Unit *manager_get_unit(Manager *m, const char *name);
242 int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u);
243 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j);
245 int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret);
246 int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret);
248 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, DBusError *e, Job **_ret);
249 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, DBusError *e, Job **_ret);
251 void manager_dump_units(Manager *s, FILE *f, const char *prefix);
252 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix);
254 void manager_transaction_unlink_job(Manager *m, Job *j, bool delete_dependencies);
256 void manager_clear_jobs(Manager *m);
258 unsigned manager_dispatch_load_queue(Manager *m);
259 unsigned manager_dispatch_run_queue(Manager *m);
260 unsigned manager_dispatch_dbus_queue(Manager *m);
262 int manager_set_default_controllers(Manager *m, char **controllers);
264 int manager_loop(Manager *m);
266 void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner);
267 void manager_dispatch_bus_query_pid_done(Manager *m, const char *name, pid_t pid);
269 int manager_open_serialization(Manager *m, FILE **_f);
271 int manager_serialize(Manager *m, FILE *f, FDSet *fds);
272 int manager_deserialize(Manager *m, FILE *f, FDSet *fds);
274 int manager_reload(Manager *m);
276 bool manager_is_booting_or_shutting_down(Manager *m);
278 void manager_reset_failed(Manager *m);
280 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success);
281 void manager_send_unit_plymouth(Manager *m, Unit *u);
283 bool manager_unit_pending_inactive(Manager *m, const char *name);
285 void manager_check_finished(Manager *m);
287 void manager_run_generators(Manager *m);
288 void manager_undo_generators(Manager *m);
290 void manager_recheck_syslog(Manager *m);
292 const char *manager_running_as_to_string(ManagerRunningAs i);
293 ManagerRunningAs manager_running_as_from_string(const char *s);