1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 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 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include "dbus-manager.h"
28 #define INTROSPECTION_BEGIN \
29 DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
31 " <interface name=\"org.freedesktop.systemd1.Manager\">" \
32 " <method name=\"GetUnit\">" \
33 " <arg name=\"name\" type=\"s\" direction=\"in\"/>" \
34 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>" \
36 " <method name=\"LoadUnit\">" \
37 " <arg name=\"name\" type=\"s\" direction=\"in\"/>" \
38 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>" \
40 " <method name=\"GetJob\">" \
41 " <arg name=\"id\" type=\"u\" direction=\"in\"/>" \
42 " <arg name=\"job\" type=\"o\" direction=\"out\"/>" \
44 " <method name=\"ClearJobs\"/>" \
45 " <method name=\"ListUnits\">" \
46 " <arg name=\"units\" type=\"a(sssssouso)\" direction=\"out\"/>" \
48 " <method name=\"ListJobs\">" \
49 " <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>" \
51 " <method name=\"Subscribe\"/>" \
52 " <method name=\"Unsubscribe\"/>" \
53 " <method name=\"Dump\"/>" \
54 " <method name=\"CreateSnapshot\">" \
55 " <arg name=\"name\" type=\"s\" direction=\"in\"/>" \
56 " <arg nane=\"cleanup\" type=\"b\" direction=\"in\"/>" \
57 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>" \
59 " <method name=\"Reload\"/>" \
60 " <method name=\"Reexecute\"/>" \
61 " <method name=\"Exit\"/>" \
62 " <signal name=\"UnitNew\">" \
63 " <arg name=\"id\" type=\"s\"/>" \
64 " <arg name=\"unit\" type=\"o\"/>" \
66 " <signal name=\"UnitRemoved\">" \
67 " <arg name=\"id\" type=\"s\"/>" \
68 " <arg name=\"unit\" type=\"o\"/>" \
70 " <signal name=\"JobNew\">" \
71 " <arg name=\"id\" type=\"u\"/>" \
72 " <arg name=\"job\" type=\"o\"/>" \
74 " <signal name=\"JobRemoved\">" \
75 " <arg name=\"id\" type=\"u\"/>" \
76 " <arg name=\"job\" type=\"o\"/>" \
78 " <property name=\"Version\" type=\"s\" access=\"read\"/>" \
79 " <property name=\"RunningAs\" type=\"s\" access=\"read\"/>" \
80 " <property name=\"BootTimestamp\" type=\"t\" access=\"read\"/>" \
81 " <property name=\"LogLevel\" type=\"s\" access=\"read\"/>" \
82 " <property name=\"LogTarget\" type=\"s\" access=\"read\"/>" \
83 " <property name=\"NNames\" type=\"u\" access=\"read\"/>" \
84 " <property name=\"NJobs\" type=\"u\" access=\"read\"/>" \
86 BUS_PROPERTIES_INTERFACE \
87 BUS_INTROSPECTABLE_INTERFACE
89 #define INTROSPECTION_END \
92 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
94 static int bus_manager_append_log_target(Manager *m, DBusMessageIter *i, const char *property, void *data) {
101 t = log_target_to_string(log_get_target());
103 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
109 static int bus_manager_append_log_level(Manager *m, DBusMessageIter *i, const char *property, void *data) {
116 t = log_level_to_string(log_get_max_level());
118 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
124 static int bus_manager_append_n_names(Manager *m, DBusMessageIter *i, const char *property, void *data) {
131 u = hashmap_size(m->units);
133 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
139 static int bus_manager_append_n_jobs(Manager *m, DBusMessageIter *i, const char *property, void *data) {
146 u = hashmap_size(m->jobs);
148 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
154 static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
157 const BusProperty properties[] = {
158 { "org.freedesktop.systemd1.Manager", "Version", bus_property_append_string, "s", PACKAGE_STRING },
159 { "org.freedesktop.systemd1.Manager", "RunningAs", bus_manager_append_running_as, "s", &m->running_as },
160 { "org.freedesktop.systemd1.Manager", "BootTimestamp", bus_property_append_uint64, "t", &m->boot_timestamp },
161 { "org.freedesktop.systemd1.Manager", "LogLevel", bus_manager_append_log_level, "s", NULL },
162 { "org.freedesktop.systemd1.Manager", "LogTarget", bus_manager_append_log_target, "s", NULL },
163 { "org.freedesktop.systemd1.Manager", "NNames", bus_manager_append_n_names, "u", NULL },
164 { "org.freedesktop.systemd1.Manager", "NJobs", bus_manager_append_n_jobs, "u", NULL },
165 { NULL, NULL, NULL, NULL, NULL }
170 DBusMessage *reply = NULL;
177 dbus_error_init(&error);
179 log_debug("Got D-Bus request: %s.%s() on %s",
180 dbus_message_get_interface(message),
181 dbus_message_get_member(message),
182 dbus_message_get_path(message));
184 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
188 if (!dbus_message_get_args(
191 DBUS_TYPE_STRING, &name,
193 return bus_send_error_reply(m, message, &error, -EINVAL);
195 if (!(u = manager_get_unit(m, name)))
196 return bus_send_error_reply(m, message, NULL, -ENOENT);
198 if (!(reply = dbus_message_new_method_return(message)))
201 if (!(path = unit_dbus_path(u)))
204 if (!dbus_message_append_args(
206 DBUS_TYPE_OBJECT_PATH, &path,
210 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
214 if (!dbus_message_get_args(
217 DBUS_TYPE_STRING, &name,
219 return bus_send_error_reply(m, message, &error, -EINVAL);
221 if ((r = manager_load_unit(m, name, NULL, &u)) < 0)
222 return bus_send_error_reply(m, message, NULL, r);
224 if (!(reply = dbus_message_new_method_return(message)))
227 if (!(path = unit_dbus_path(u)))
230 if (!dbus_message_append_args(
232 DBUS_TYPE_OBJECT_PATH, &path,
236 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
240 if (!dbus_message_get_args(
243 DBUS_TYPE_UINT32, &id,
245 return bus_send_error_reply(m, message, &error, -EINVAL);
247 if (!(j = manager_get_job(m, id)))
248 return bus_send_error_reply(m, message, NULL, -ENOENT);
250 if (!(reply = dbus_message_new_method_return(message)))
253 if (!(path = job_dbus_path(j)))
256 if (!dbus_message_append_args(
258 DBUS_TYPE_OBJECT_PATH, &path,
262 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
264 manager_clear_jobs(m);
266 if (!(reply = dbus_message_new_method_return(message)))
269 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
270 DBusMessageIter iter, sub;
275 if (!(reply = dbus_message_new_method_return(message)))
278 dbus_message_iter_init_append(reply, &iter);
280 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(sssssouso)", &sub))
283 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
284 char *u_path, *j_path;
285 const char *description, *load_state, *active_state, *sub_state, *job_type;
286 DBusMessageIter sub2;
292 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
295 description = unit_description(u);
296 load_state = unit_load_state_to_string(u->meta.load_state);
297 active_state = unit_active_state_to_string(unit_active_state(u));
298 sub_state = unit_sub_state_to_string(u);
300 if (!(u_path = unit_dbus_path(u)))
304 job_id = (uint32_t) u->meta.job->id;
306 if (!(j_path = job_dbus_path(u->meta.job))) {
311 job_type = job_type_to_string(u->meta.job->type);
318 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) ||
319 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
320 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
321 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
322 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
323 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
324 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
325 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &job_type) ||
326 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
337 if (!dbus_message_iter_close_container(&sub, &sub2))
341 if (!dbus_message_iter_close_container(&iter, &sub))
344 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
345 DBusMessageIter iter, sub;
349 if (!(reply = dbus_message_new_method_return(message)))
352 dbus_message_iter_init_append(reply, &iter);
354 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
357 HASHMAP_FOREACH(j, m->jobs, i) {
358 char *u_path, *j_path;
359 const char *state, *type;
361 DBusMessageIter sub2;
363 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
366 id = (uint32_t) j->id;
367 state = job_state_to_string(j->state);
368 type = job_type_to_string(j->type);
370 if (!(j_path = job_dbus_path(j)))
373 if (!(u_path = unit_dbus_path(j->unit))) {
378 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
379 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) ||
380 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
381 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
382 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
383 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
392 if (!dbus_message_iter_close_container(&sub, &sub2))
396 if (!dbus_message_iter_close_container(&iter, &sub))
399 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
402 if (!(client = strdup(dbus_message_get_sender(message))))
405 r = set_put(m->subscribed, client);
408 return bus_send_error_reply(m, message, NULL, r);
410 if (!(reply = dbus_message_new_method_return(message)))
413 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
416 if (!(client = set_remove(m->subscribed, (char*) dbus_message_get_sender(message))))
417 return bus_send_error_reply(m, message, NULL, -ENOENT);
421 if (!(reply = dbus_message_new_method_return(message)))
424 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
429 if (!(reply = dbus_message_new_method_return(message)))
432 if (!(f = open_memstream(&dump, &size)))
435 manager_dump_units(m, f, NULL);
436 manager_dump_jobs(m, f, NULL);
446 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
452 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
457 if (!dbus_message_get_args(
460 DBUS_TYPE_STRING, &name,
461 DBUS_TYPE_BOOLEAN, &cleanup,
463 return bus_send_error_reply(m, message, &error, -EINVAL);
465 if (name && name[0] == 0)
468 if ((r = snapshot_create(m, name, cleanup, &s)) < 0)
469 return bus_send_error_reply(m, message, NULL, r);
471 if (!(reply = dbus_message_new_method_return(message)))
474 if (!(path = unit_dbus_path(UNIT(s))))
477 if (!dbus_message_append_args(
479 DBUS_TYPE_OBJECT_PATH, &path,
483 } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
484 char *introspection = NULL;
492 if (!(reply = dbus_message_new_method_return(message)))
495 /* We roll our own introspection code here, instead of
496 * relying on bus_default_message_handler() because we
497 * need to generate our introspection string
500 if (!(f = open_memstream(&introspection, &size)))
503 fputs(INTROSPECTION_BEGIN, f);
505 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
511 if (!(p = bus_path_escape(k))) {
517 fprintf(f, "<node name=\"unit/%s\"/>", p);
521 HASHMAP_FOREACH(j, m->jobs, i)
522 fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
524 fputs(INTROSPECTION_END, f);
537 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
544 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
546 assert(!m->queued_message);
548 /* Instead of sending the reply back right away, we
549 * just remember that we need to and then send it
550 * after the reload is finished. That way the caller
551 * knows when the reload finished. */
553 if (!(m->queued_message = dbus_message_new_method_return(message)))
556 m->exit_code = MANAGER_RELOAD;
558 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
560 if (!(reply = dbus_message_new_method_return(message)))
563 m->exit_code = MANAGER_REEXECUTE;
565 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
567 if (m->running_as == MANAGER_INIT)
568 return bus_send_error_reply(m, message, NULL, -ENOTSUP);
570 if (!(reply = dbus_message_new_method_return(message)))
573 m->exit_code = MANAGER_EXIT;
576 return bus_default_message_handler(m, message, NULL, properties);
581 if (!dbus_connection_send(connection, reply, NULL))
584 dbus_message_unref(reply);
587 return DBUS_HANDLER_RESULT_HANDLED;
593 dbus_message_unref(reply);
595 dbus_error_free(&error);
597 return DBUS_HANDLER_RESULT_NEED_MEMORY;
600 const DBusObjectPathVTable bus_manager_vtable = {
601 .message_function = bus_manager_message_handler