1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2013 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include "sd-daemon.h"
27 #include "cgroup-util.h"
29 #include "bus-error.h"
31 #include "machine-image.h"
34 Manager *manager_new(void) {
42 m->machines = hashmap_new(&string_hash_ops);
43 m->machine_units = hashmap_new(&string_hash_ops);
44 m->machine_leaders = hashmap_new(NULL);
46 if (!m->machines || !m->machine_units || !m->machine_leaders) {
51 r = sd_event_default(&m->event);
57 sd_event_set_watchdog(m->event, true);
62 void manager_free(Manager *m) {
68 while ((machine = hashmap_first(m->machines)))
69 machine_free(machine);
71 hashmap_free(m->machines);
72 hashmap_free(m->machine_units);
73 hashmap_free(m->machine_leaders);
75 while ((i = hashmap_steal_first(m->image_cache)))
78 hashmap_free(m->image_cache);
80 sd_event_source_unref(m->image_cache_defer_event);
82 bus_verify_polkit_async_registry_free(m->polkit_registry);
85 sd_event_unref(m->event);
90 int manager_enumerate_machines(Manager *m) {
91 _cleanup_closedir_ DIR *d = NULL;
97 /* Read in machine data stored on disk */
98 d = opendir("/run/systemd/machines");
103 log_error_errno(errno, "Failed to open /run/systemd/machines: %m");
107 FOREACH_DIRENT(de, d, return -errno) {
108 struct Machine *machine;
111 if (!dirent_is_file(de))
114 /* Ignore symlinks that map the unit name to the machine */
115 if (startswith(de->d_name, "unit:"))
118 k = manager_add_machine(m, de->d_name, &machine);
120 log_error_errno(k, "Failed to add machine by file name %s: %m", de->d_name);
126 machine_add_to_gc_queue(machine);
128 k = machine_load(machine);
136 static int manager_connect_bus(Manager *m) {
137 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
143 r = sd_bus_default_system(&m->bus);
145 return log_error_errno(r, "Failed to connect to system bus: %m");
147 r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/machine1", "org.freedesktop.machine1.Manager", manager_vtable, m);
149 return log_error_errno(r, "Failed to add manager object vtable: %m");
151 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/machine1/machine", "org.freedesktop.machine1.Machine", machine_vtable, machine_object_find, m);
153 return log_error_errno(r, "Failed to add machine object vtable: %m");
155 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/machine1/machine", machine_node_enumerator, m);
157 return log_error_errno(r, "Failed to add machine enumerator: %m");
159 r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/machine1/image", "org.freedesktop.machine1.Image", image_vtable, image_object_find, m);
161 return log_error_errno(r, "Failed to add image object vtable: %m");
163 r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/machine1/image", image_node_enumerator, m);
165 return log_error_errno(r, "Failed to add image enumerator: %m");
167 r = sd_bus_add_match(m->bus,
170 "sender='org.freedesktop.systemd1',"
171 "interface='org.freedesktop.systemd1.Manager',"
172 "member='JobRemoved',"
173 "path='/org/freedesktop/systemd1'",
177 return log_error_errno(r, "Failed to add match for JobRemoved: %m");
179 r = sd_bus_add_match(m->bus,
182 "sender='org.freedesktop.systemd1',"
183 "interface='org.freedesktop.systemd1.Manager',"
184 "member='UnitRemoved',"
185 "path='/org/freedesktop/systemd1'",
189 return log_error_errno(r, "Failed to add match for UnitRemoved: %m");
191 r = sd_bus_add_match(m->bus,
194 "sender='org.freedesktop.systemd1',"
195 "interface='org.freedesktop.DBus.Properties',"
196 "member='PropertiesChanged'",
197 match_properties_changed,
200 return log_error_errno(r, "Failed to add match for PropertiesChanged: %m");
202 r = sd_bus_add_match(m->bus,
205 "sender='org.freedesktop.systemd1',"
206 "interface='org.freedesktop.systemd1.Manager',"
207 "member='Reloading',"
208 "path='/org/freedesktop/systemd1'",
212 return log_error_errno(r, "Failed to add match for Reloading: %m");
214 r = sd_bus_call_method(
216 "org.freedesktop.systemd1",
217 "/org/freedesktop/systemd1",
218 "org.freedesktop.systemd1.Manager",
223 log_error("Failed to enable subscription: %s", bus_error_message(&error, r));
227 r = sd_bus_request_name(m->bus, "org.freedesktop.machine1", 0);
229 return log_error_errno(r, "Failed to register name: %m");
231 r = sd_bus_attach_event(m->bus, m->event, 0);
233 return log_error_errno(r, "Failed to attach bus to event loop: %m");
238 void manager_gc(Manager *m, bool drop_not_started) {
243 while ((machine = m->machine_gc_queue)) {
244 LIST_REMOVE(gc_queue, m->machine_gc_queue, machine);
245 machine->in_gc_queue = false;
247 if (!machine_check_gc(machine, drop_not_started)) {
248 machine_stop(machine);
249 machine_free(machine);
254 int manager_startup(Manager *m) {
261 /* Connect to the bus */
262 r = manager_connect_bus(m);
266 /* Deserialize state */
267 manager_enumerate_machines(m);
269 /* Remove stale objects before we start them */
270 manager_gc(m, false);
272 /* And start everything */
273 HASHMAP_FOREACH(machine, m->machines, i)
274 machine_start(machine, NULL, NULL);
279 static bool check_idle(void *userdata) {
280 Manager *m = userdata;
284 return hashmap_isempty(m->machines);
287 int manager_run(Manager *m) {
290 return bus_event_loop_with_idle(
293 "org.freedesktop.machine1",
298 int main(int argc, char *argv[]) {
302 log_set_target(LOG_TARGET_AUTO);
303 log_set_facility(LOG_AUTH);
304 log_parse_environment();
310 log_error("This program takes no arguments.");
315 /* Always create the directories people can create inotify
316 * watches in. Note that some applications might check for the
317 * existence of /run/systemd/machines/ to determine whether
318 * machined is available, so please always make sure this
320 mkdir_label("/run/systemd/machines", 0755);
322 assert_se(sigprocmask_many(SIG_BLOCK, SIGCHLD, -1) >= 0);
330 r = manager_startup(m);
332 log_error_errno(r, "Failed to fully start up daemon: %m");
336 log_debug("systemd-machined running as pid "PID_FMT, getpid());
340 "STATUS=Processing requests...");
344 log_debug("systemd-machined stopped as pid "PID_FMT, getpid());
350 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;