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-unit.h"
28 int bus_unit_append_names(Manager
*m
, DBusMessageIter
*i
, const char *property
, void *data
) {
34 if (!dbus_message_iter_open_container(i
, DBUS_TYPE_ARRAY
, "s", &sub
))
37 SET_FOREACH(t
, u
->meta
.names
, j
)
38 if (!dbus_message_iter_append_basic(&sub
, DBUS_TYPE_STRING
, &t
))
41 if (!dbus_message_iter_close_container(i
, &sub
))
47 int bus_unit_append_description(Manager
*m
, DBusMessageIter
*i
, const char *property
, void *data
) {
56 d
= unit_description(u
);
58 if (!dbus_message_iter_append_basic(i
, DBUS_TYPE_STRING
, &d
))
64 DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_unit_append_load_state
, unit_load_state
, UnitLoadState
);
66 int bus_unit_append_active_state(Manager
*m
, DBusMessageIter
*i
, const char *property
, void *data
) {
75 state
= unit_active_state_to_string(unit_active_state(u
));
77 if (!dbus_message_iter_append_basic(i
, DBUS_TYPE_STRING
, &state
))
83 int bus_unit_append_sub_state(Manager
*m
, DBusMessageIter
*i
, const char *property
, void *data
) {
92 state
= unit_sub_state_to_string(u
);
94 if (!dbus_message_iter_append_basic(i
, DBUS_TYPE_STRING
, &state
))
100 int bus_unit_append_can_start(Manager
*m
, DBusMessageIter
*i
, const char *property
, void *data
) {
109 b
= unit_can_start(u
);
111 if (!dbus_message_iter_append_basic(i
, DBUS_TYPE_BOOLEAN
, &b
))
117 int bus_unit_append_can_reload(Manager
*m
, DBusMessageIter
*i
, const char *property
, void *data
) {
126 b
= unit_can_reload(u
);
128 if (!dbus_message_iter_append_basic(i
, DBUS_TYPE_BOOLEAN
, &b
))
134 int bus_unit_append_job(Manager
*m
, DBusMessageIter
*i
, const char *property
, void *data
) {
144 if (!dbus_message_iter_open_container(i
, DBUS_TYPE_STRUCT
, NULL
, &sub
))
149 if (!(p
= job_dbus_path(u
->meta
.job
)))
152 if (!dbus_message_iter_append_basic(&sub
, DBUS_TYPE_UINT32
, &u
->meta
.job
->id
) ||
153 !dbus_message_iter_append_basic(&sub
, DBUS_TYPE_OBJECT_PATH
, &p
)) {
160 /* No job, so let's fill in some placeholder
161 * data. Since we need to fill in a valid path we
162 * simple point to ourselves. */
164 if (!(p
= unit_dbus_path(u
)))
167 if (!dbus_message_iter_append_basic(&sub
, DBUS_TYPE_UINT32
, &id
) ||
168 !dbus_message_iter_append_basic(&sub
, DBUS_TYPE_OBJECT_PATH
, &p
)) {
176 if (!dbus_message_iter_close_container(i
, &sub
))
182 int bus_unit_append_default_cgroup(Manager
*m
, DBusMessageIter
*i
, const char *property
, void *data
) {
193 if ((cgb
= unit_get_default_cgroup(u
))) {
194 if (!(t
= cgroup_bonding_to_string(cgb
)))
199 success
= dbus_message_iter_append_basic(i
, DBUS_TYPE_STRING
, &t
);
204 return success
? 0 : -ENOMEM
;
207 int bus_unit_append_cgroups(Manager
*m
, DBusMessageIter
*i
, const char *property
, void *data
) {
212 if (!dbus_message_iter_open_container(i
, DBUS_TYPE_ARRAY
, "s", &sub
))
215 LIST_FOREACH(by_unit
, cgb
, u
->meta
.cgroup_bondings
) {
219 if (!(t
= cgroup_bonding_to_string(cgb
)))
222 success
= dbus_message_iter_append_basic(&sub
, DBUS_TYPE_STRING
, &t
);
229 if (!dbus_message_iter_close_container(i
, &sub
))
235 DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_unit_append_kill_mode
, kill_mode
, KillMode
);
237 static DBusHandlerResult
bus_unit_message_dispatch(Unit
*u
, DBusMessage
*message
) {
238 DBusMessage
*reply
= NULL
;
239 Manager
*m
= u
->meta
.manager
;
241 JobType job_type
= _JOB_TYPE_INVALID
;
243 dbus_error_init(&error
);
245 if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Unit", "Start"))
246 job_type
= JOB_START
;
247 else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Unit", "Stop"))
249 else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Unit", "Reload"))
250 job_type
= JOB_RELOAD
;
251 else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Unit", "Restart"))
252 job_type
= JOB_RESTART
;
253 else if (UNIT_VTABLE(u
)->bus_message_handler
)
254 return UNIT_VTABLE(u
)->bus_message_handler(u
, message
);
256 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED
;
258 if (job_type
!= _JOB_TYPE_INVALID
) {
265 if (!dbus_message_get_args(
268 DBUS_TYPE_STRING
, &smode
,
270 return bus_send_error_reply(m
, message
, &error
, -EINVAL
);
272 if ((mode
= job_mode_from_string(smode
)) == _JOB_MODE_INVALID
)
273 return bus_send_error_reply(m
, message
, NULL
, -EINVAL
);
275 if ((r
= manager_add_job(m
, job_type
, u
, mode
, true, &j
)) < 0)
276 return bus_send_error_reply(m
, message
, NULL
, r
);
278 if (!(reply
= dbus_message_new_method_return(message
)))
281 if (!(path
= job_dbus_path(j
)))
284 if (!dbus_message_append_args(
286 DBUS_TYPE_OBJECT_PATH
, &path
,
292 if (!dbus_connection_send(m
->api_bus
, reply
, NULL
))
295 dbus_message_unref(reply
);
298 return DBUS_HANDLER_RESULT_HANDLED
;
302 dbus_message_unref(reply
);
304 dbus_error_free(&error
);
306 return DBUS_HANDLER_RESULT_NEED_MEMORY
;
309 static DBusHandlerResult
bus_unit_message_handler(DBusConnection
*connection
, DBusMessage
*message
, void *data
) {
318 log_debug("Got D-Bus request: %s.%s() on %s",
319 dbus_message_get_interface(message
),
320 dbus_message_get_member(message
),
321 dbus_message_get_path(message
));
323 if ((r
= manager_get_unit_from_dbus_path(m
, dbus_message_get_path(message
), &u
)) < 0) {
326 return DBUS_HANDLER_RESULT_NEED_MEMORY
;
329 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED
;
331 return bus_send_error_reply(m
, message
, NULL
, r
);
334 return bus_unit_message_dispatch(u
, message
);
337 const DBusObjectPathVTable bus_unit_vtable
= {
338 .message_function
= bus_unit_message_handler
341 void bus_unit_send_change_signal(Unit
*u
) {
343 DBusMessage
*m
= NULL
;
346 assert(u
->meta
.in_dbus_queue
);
348 LIST_REMOVE(Meta
, dbus_queue
, u
->meta
.manager
->dbus_unit_queue
, &u
->meta
);
349 u
->meta
.in_dbus_queue
= false;
351 if (set_isempty(u
->meta
.manager
->subscribed
))
354 if (!(p
= unit_dbus_path(u
)))
357 if (u
->meta
.sent_dbus_new_signal
) {
358 /* Send a change signal */
360 if (!(m
= dbus_message_new_signal(p
, "org.freedesktop.systemd1.Unit", "Changed")))
363 /* Send a new signal */
365 if (!(m
= dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitNew")))
368 if (!dbus_message_append_args(m
,
369 DBUS_TYPE_STRING
, &u
->meta
.id
,
370 DBUS_TYPE_OBJECT_PATH
, &p
,
375 if (!dbus_connection_send(u
->meta
.manager
->api_bus
, m
, NULL
))
379 dbus_message_unref(m
);
381 u
->meta
.sent_dbus_new_signal
= true;
389 dbus_message_unref(m
);
391 log_error("Failed to allocate unit change/new signal.");
394 void bus_unit_send_removed_signal(Unit
*u
) {
396 DBusMessage
*m
= NULL
;
400 if (set_isempty(u
->meta
.manager
->subscribed
) || !u
->meta
.sent_dbus_new_signal
)
403 if (!(p
= unit_dbus_path(u
)))
406 if (!(m
= dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitRemoved")))
409 if (!dbus_message_append_args(m
,
410 DBUS_TYPE_STRING
, &u
->meta
.id
,
411 DBUS_TYPE_OBJECT_PATH
, &p
,
415 if (!dbus_connection_send(u
->meta
.manager
->api_bus
, m
, NULL
))
419 dbus_message_unref(m
);
427 dbus_message_unref(m
);
429 log_error("Failed to allocate unit remove signal.");