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/>.
22 #include "alloc-util.h"
23 #include "bus-common-errors.h"
24 #include "bus-internal.h"
26 #include "dbus-cgroup.h"
27 #include "dbus-kill.h"
28 #include "dbus-scope.h"
29 #include "dbus-unit.h"
32 #include "selinux-access.h"
35 static int bus_scope_abandon(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
42 r
= mac_selinux_unit_access_check(UNIT(s
), message
, "stop", error
);
46 r
= bus_verify_manage_units_async(UNIT(s
)->manager
, message
, error
);
50 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
54 return sd_bus_error_setf(error
, BUS_ERROR_SCOPE_NOT_RUNNING
, "Scope %s is not running, cannot abandon.", UNIT(s
)->id
);
58 return sd_bus_reply_method_return(message
, NULL
);
61 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_result
, scope_result
, ScopeResult
);
63 const sd_bus_vtable bus_scope_vtable
[] = {
64 SD_BUS_VTABLE_START(0),
65 SD_BUS_PROPERTY("Controller", "s", NULL
, offsetof(Scope
, controller
), SD_BUS_VTABLE_PROPERTY_CONST
),
66 SD_BUS_PROPERTY("TimeoutStopUSec", "t", bus_property_get_usec
, offsetof(Scope
, timeout_stop_usec
), SD_BUS_VTABLE_PROPERTY_CONST
),
67 SD_BUS_PROPERTY("Result", "s", property_get_result
, offsetof(Scope
, result
), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
68 SD_BUS_SIGNAL("RequestStop", NULL
, 0),
69 SD_BUS_METHOD("Abandon", NULL
, NULL
, bus_scope_abandon
, SD_BUS_VTABLE_UNPRIVILEGED
),
73 static int bus_scope_set_transient_property(
76 sd_bus_message
*message
,
77 UnitSetPropertiesMode mode
,
78 sd_bus_error
*error
) {
86 if (streq(name
, "PIDs")) {
90 r
= sd_bus_message_enter_container(message
, 'a', "u");
94 while ((r
= sd_bus_message_read(message
, "u", &pid
)) > 0) {
99 if (mode
!= UNIT_CHECK
) {
100 r
= unit_watch_pid(UNIT(s
), pid
);
101 if (r
< 0 && r
!= -EEXIST
)
110 r
= sd_bus_message_exit_container(message
);
119 } else if (streq(name
, "Controller")) {
120 const char *controller
;
123 r
= sd_bus_message_read(message
, "s", &controller
);
127 if (!isempty(controller
) && !service_name_is_valid(controller
))
128 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Controller '%s' is not a valid bus name.", controller
);
130 if (mode
!= UNIT_CHECK
) {
131 if (isempty(controller
))
134 c
= strdup(controller
);
145 } else if (streq(name
, "TimeoutStopUSec")) {
147 if (mode
!= UNIT_CHECK
) {
148 r
= sd_bus_message_read(message
, "t", &s
->timeout_stop_usec
);
152 unit_write_drop_in_format(UNIT(s
), mode
, name
, "[Scope]\nTimeoutStopSec="USEC_FMT
"us\n", s
->timeout_stop_usec
);
154 r
= sd_bus_message_skip(message
, "t");
165 int bus_scope_set_property(
168 sd_bus_message
*message
,
169 UnitSetPropertiesMode mode
,
170 sd_bus_error
*error
) {
179 r
= bus_cgroup_set_property(u
, &s
->cgroup_context
, name
, message
, mode
, error
);
183 if (u
->load_state
== UNIT_STUB
) {
184 /* While we are created we still accept PIDs */
186 r
= bus_scope_set_transient_property(s
, name
, message
, mode
, error
);
190 r
= bus_kill_context_set_transient_property(u
, &s
->kill_context
, name
, message
, mode
, error
);
198 int bus_scope_commit_properties(Unit
*u
) {
201 unit_update_cgroup_members_masks(u
);
202 unit_realize_cgroup(u
);
207 int bus_scope_send_request_stop(Scope
*s
) {
208 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*m
= NULL
;
209 _cleanup_free_
char *p
= NULL
;
217 p
= unit_dbus_path(UNIT(s
));
221 r
= sd_bus_message_new_signal(
222 UNIT(s
)->manager
->api_bus
,
225 "org.freedesktop.systemd1.Scope",
230 return sd_bus_send_to(UNIT(s
)->manager
->api_bus
, m
, /* s->controller */ NULL
, NULL
);