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 2048
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
79 DBusTimeout *bus_timeout;
91 #include "path-lookup.h"
94 /* Note that the set of units we know of is allowed to be
95 * incosistent. However the subset of it that is loaded may
96 * not, and the list of jobs may neither. */
98 /* Active jobs and units */
99 Hashmap *units; /* name string => Unit object n:1 */
100 Hashmap *jobs; /* job id => Job object 1:1 */
102 /* To make it easy to iterate through the units of a specific
103 * type we maintain a per type linked list */
104 LIST_HEAD(Meta, units_per_type[_UNIT_TYPE_MAX]);
106 /* Units that need to be loaded */
107 LIST_HEAD(Meta, load_queue); /* this is actually more a stack than a queue, but uh. */
109 /* Jobs that need to be run */
110 LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */
112 /* Units and jobs that have not yet been announced via
113 * D-Bus. When something about a job changes it is added here
114 * if it is not in there yet. This allows easy coalescing of
115 * D-Bus change signals. */
116 LIST_HEAD(Meta, dbus_unit_queue);
117 LIST_HEAD(Job, dbus_job_queue);
119 /* Units to remove */
120 LIST_HEAD(Meta, cleanup_queue);
122 /* Units to check when doing GC */
123 LIST_HEAD(Meta, gc_queue);
125 /* Jobs to be added */
126 Hashmap *transaction_jobs; /* Unit object => Job object list 1:1 */
127 JobDependency *transaction_anchor;
129 Hashmap *watch_pids; /* pid => Unit object n:1 */
138 unsigned n_snapshots;
140 LookupPaths lookup_paths;
141 Set *unit_path_cache;
145 dual_timestamp startup_timestamp;
146 dual_timestamp finish_timestamp;
150 /* Data specific to the device subsystem */
152 struct udev_monitor* udev_monitor;
154 Hashmap *devices_by_sysfs;
156 /* Data specific to the mount subsystem */
157 FILE *proc_self_mountinfo;
160 /* Data specific to the swap filesystem */
162 Hashmap *swaps_by_proc_swaps;
165 /* Data specific to the D-Bus subsystem */
166 DBusConnection *api_bus, *system_bus;
167 DBusServer *private_bus;
168 Set *bus_connections, *bus_connections_for_dispatch;
170 DBusMessage *queued_message; /* This is used during reloading:
171 * before the reload we queue the
172 * reply message here, and
173 * afterwards we send it */
174 DBusConnection *queued_message_connection; /* The connection to send the queued message on */
176 Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */
177 int32_t name_data_slot;
178 int32_t subscribed_data_slot;
180 uint32_t current_job_id;
182 /* Data specific to the Automount subsystem */
185 /* Data specific to the cgroup subsystem */
186 Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */
187 char *cgroup_hierarchy;
189 usec_t gc_queue_timestamp;
191 unsigned n_in_gc_queue;
193 /* Make sure the user cannot accidentaly unmount our cgroup
203 ManagerRunningAs running_as;
204 ManagerExitCode exit_code:5;
206 bool dispatching_load_queue:1;
207 bool dispatching_run_queue:1;
208 bool dispatching_dbus_queue:1;
212 #ifdef HAVE_SYSV_COMPAT
220 unsigned n_installed_jobs;
221 unsigned n_failed_jobs;
224 int manager_new(ManagerRunningAs running_as, Manager **m);
225 void manager_free(Manager *m);
227 int manager_enumerate(Manager *m);
228 int manager_coldplug(Manager *m);
229 int manager_startup(Manager *m, FILE *serialization, FDSet *fds);
231 Job *manager_get_job(Manager *m, uint32_t id);
232 Unit *manager_get_unit(Manager *m, const char *name);
234 int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u);
235 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j);
237 int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret);
238 int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret);
240 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, DBusError *e, Job **_ret);
241 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, DBusError *e, Job **_ret);
243 void manager_dump_units(Manager *s, FILE *f, const char *prefix);
244 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix);
246 void manager_transaction_unlink_job(Manager *m, Job *j, bool delete_dependencies);
248 void manager_clear_jobs(Manager *m);
250 unsigned manager_dispatch_load_queue(Manager *m);
251 unsigned manager_dispatch_run_queue(Manager *m);
252 unsigned manager_dispatch_dbus_queue(Manager *m);
254 int manager_set_console(Manager *m, const char *console);
256 int manager_loop(Manager *m);
258 void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner);
259 void manager_dispatch_bus_query_pid_done(Manager *m, const char *name, pid_t pid);
261 int manager_open_serialization(Manager *m, FILE **_f);
263 int manager_serialize(Manager *m, FILE *f, FDSet *fds);
264 int manager_deserialize(Manager *m, FILE *f, FDSet *fds);
266 int manager_reload(Manager *m);
268 bool manager_is_booting_or_shutting_down(Manager *m);
270 void manager_reset_failed(Manager *m);
272 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success);
273 void manager_send_unit_plymouth(Manager *m, Unit *u);
275 bool manager_unit_pending_inactive(Manager *m, const char *name);
277 void manager_check_finished(Manager *m);
279 const char *manager_running_as_to_string(ManagerRunningAs i);
280 ManagerRunningAs manager_running_as_from_string(const char *s);