]>
Commit | Line | Data |
---|---|---|
53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
6c12b52e | 2 | |
b5efdb8a | 3 | #include "alloc-util.h" |
96aad8d1 | 4 | #include "bus-common-errors.h" |
b5efdb8a LP |
5 | #include "bus-internal.h" |
6 | #include "bus-util.h" | |
1d22e906 LP |
7 | #include "dbus-cgroup.h" |
8 | #include "dbus-kill.h" | |
9 | #include "dbus-scope.h" | |
b5efdb8a | 10 | #include "dbus-unit.h" |
0fb0fffa | 11 | #include "dbus-util.h" |
b5efdb8a LP |
12 | #include "dbus.h" |
13 | #include "scope.h" | |
14 | #include "selinux-access.h" | |
15 | #include "unit.h" | |
6c12b52e | 16 | |
c20076a8 | 17 | int bus_scope_method_abandon(sd_bus_message *message, void *userdata, sd_bus_error *error) { |
a911bb9a | 18 | Scope *s = userdata; |
4e2f8d27 | 19 | int r; |
a911bb9a | 20 | |
a911bb9a LP |
21 | assert(message); |
22 | assert(s); | |
23 | ||
1d22e906 LP |
24 | r = mac_selinux_unit_access_check(UNIT(s), message, "stop", error); |
25 | if (r < 0) | |
26 | return r; | |
27 | ||
28 | r = bus_verify_manage_units_async(UNIT(s)->manager, message, error); | |
283868e1 SW |
29 | if (r < 0) |
30 | return r; | |
31 | if (r == 0) | |
32 | return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ | |
33 | ||
4e2f8d27 | 34 | r = scope_abandon(s); |
4e2f8d27 LP |
35 | if (r == -ESTALE) |
36 | return sd_bus_error_setf(error, BUS_ERROR_SCOPE_NOT_RUNNING, "Scope %s is not running, cannot abandon.", UNIT(s)->id); | |
1d22e906 LP |
37 | if (r < 0) |
38 | return r; | |
4e2f8d27 LP |
39 | |
40 | return sd_bus_reply_method_return(message, NULL); | |
a911bb9a LP |
41 | } |
42 | ||
718db961 | 43 | static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_result, scope_result, ScopeResult); |
6c12b52e | 44 | |
718db961 LP |
45 | const sd_bus_vtable bus_scope_vtable[] = { |
46 | SD_BUS_VTABLE_START(0), | |
371c0b79 | 47 | SD_BUS_PROPERTY("Controller", "s", NULL, offsetof(Scope, controller), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
556089dc | 48 | SD_BUS_PROPERTY("TimeoutStopUSec", "t", bus_property_get_usec, offsetof(Scope, timeout_stop_usec), SD_BUS_VTABLE_PROPERTY_CONST), |
718db961 | 49 | SD_BUS_PROPERTY("Result", "s", property_get_result, offsetof(Scope, result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
2d4a39e7 | 50 | SD_BUS_SIGNAL("RequestStop", NULL, 0), |
c20076a8 | 51 | SD_BUS_METHOD("Abandon", NULL, NULL, bus_scope_method_abandon, SD_BUS_VTABLE_UNPRIVILEGED), |
718db961 LP |
52 | SD_BUS_VTABLE_END |
53 | }; | |
6c12b52e | 54 | |
9f2e86af | 55 | static int bus_scope_set_transient_property( |
6c12b52e LP |
56 | Scope *s, |
57 | const char *name, | |
718db961 | 58 | sd_bus_message *message, |
2e59b241 | 59 | UnitWriteFlags flags, |
718db961 | 60 | sd_bus_error *error) { |
6c12b52e | 61 | |
ef71cc77 | 62 | Unit *u = UNIT(s); |
6c12b52e LP |
63 | int r; |
64 | ||
6c12b52e | 65 | assert(s); |
718db961 LP |
66 | assert(name); |
67 | assert(message); | |
6c12b52e | 68 | |
2e59b241 LP |
69 | flags |= UNIT_PRIVATE; |
70 | ||
0fb0fffa | 71 | if (streq(name, "TimeoutStopUSec")) |
ef71cc77 | 72 | return bus_set_transient_usec(u, name, &s->timeout_stop_usec, message, flags, error); |
0fb0fffa | 73 | |
6c12b52e | 74 | if (streq(name, "PIDs")) { |
6592b975 | 75 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
294a90cc | 76 | unsigned n = 0; |
6c12b52e | 77 | |
718db961 LP |
78 | r = sd_bus_message_enter_container(message, 'a', "u"); |
79 | if (r < 0) | |
80 | return r; | |
6c12b52e | 81 | |
6592b975 LP |
82 | for (;;) { |
83 | uint32_t upid; | |
84 | pid_t pid; | |
85 | ||
86 | r = sd_bus_message_read(message, "u", &upid); | |
87 | if (r < 0) | |
88 | return r; | |
89 | if (r == 0) | |
90 | break; | |
91 | ||
92 | if (upid == 0) { | |
93 | if (!creds) { | |
94 | r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds); | |
95 | if (r < 0) | |
96 | return r; | |
97 | } | |
98 | ||
99 | r = sd_bus_creds_get_pid(creds, &pid); | |
100 | if (r < 0) | |
101 | return r; | |
102 | } else | |
103 | pid = (uid_t) upid; | |
6c12b52e | 104 | |
ef71cc77 | 105 | r = unit_pid_attachable(u, pid, error); |
6592b975 LP |
106 | if (r < 0) |
107 | return r; | |
6c12b52e | 108 | |
2e59b241 | 109 | if (!UNIT_WRITE_FLAGS_NOOP(flags)) { |
ef71cc77 | 110 | r = unit_watch_pid(u, pid, false); |
adb3a45d LP |
111 | if (r < 0 && r != -EEXIST) |
112 | return r; | |
113 | } | |
6c12b52e | 114 | |
adb3a45d | 115 | n++; |
6c12b52e | 116 | } |
718db961 LP |
117 | |
118 | r = sd_bus_message_exit_container(message); | |
119 | if (r < 0) | |
120 | return r; | |
6c12b52e | 121 | |
adb3a45d | 122 | if (n <= 0) |
6c12b52e LP |
123 | return -EINVAL; |
124 | ||
125 | return 1; | |
cc23f9f1 | 126 | |
2d4a39e7 LP |
127 | } else if (streq(name, "Controller")) { |
128 | const char *controller; | |
2d4a39e7 | 129 | |
f2c49c86 LP |
130 | /* We can't support direct connections with this, as direct connections know no service or unique name |
131 | * concept, but the Controller field stores exactly that. */ | |
ef71cc77 | 132 | if (sd_bus_message_get_bus(message) != u->manager->api_bus) |
f2c49c86 LP |
133 | return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Sorry, Controller= logic only supported via the bus."); |
134 | ||
2d4a39e7 LP |
135 | r = sd_bus_message_read(message, "s", &controller); |
136 | if (r < 0) | |
137 | return r; | |
138 | ||
139 | if (!isempty(controller) && !service_name_is_valid(controller)) | |
140 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Controller '%s' is not a valid bus name.", controller); | |
141 | ||
2e59b241 LP |
142 | if (!UNIT_WRITE_FLAGS_NOOP(flags)) { |
143 | r = free_and_strdup(&s->controller, empty_to_null(controller)); | |
144 | if (r < 0) | |
145 | return r; | |
2d4a39e7 LP |
146 | } |
147 | ||
cc23f9f1 | 148 | return 1; |
6c12b52e LP |
149 | } |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
154 | int bus_scope_set_property( | |
155 | Unit *u, | |
156 | const char *name, | |
718db961 | 157 | sd_bus_message *message, |
2e59b241 | 158 | UnitWriteFlags flags, |
718db961 | 159 | sd_bus_error *error) { |
6c12b52e LP |
160 | |
161 | Scope *s = SCOPE(u); | |
162 | int r; | |
163 | ||
718db961 | 164 | assert(s); |
6c12b52e | 165 | assert(name); |
718db961 | 166 | assert(message); |
6c12b52e | 167 | |
2e59b241 | 168 | r = bus_cgroup_set_property(u, &s->cgroup_context, name, message, flags, error); |
6c12b52e LP |
169 | if (r != 0) |
170 | return r; | |
171 | ||
172 | if (u->load_state == UNIT_STUB) { | |
173 | /* While we are created we still accept PIDs */ | |
174 | ||
2e59b241 | 175 | r = bus_scope_set_transient_property(s, name, message, flags, error); |
6c12b52e LP |
176 | if (r != 0) |
177 | return r; | |
a6c0353b | 178 | |
2e59b241 | 179 | r = bus_kill_context_set_transient_property(u, &s->kill_context, name, message, flags, error); |
a6c0353b LP |
180 | if (r != 0) |
181 | return r; | |
6c12b52e LP |
182 | } |
183 | ||
184 | return 0; | |
185 | } | |
186 | ||
187 | int bus_scope_commit_properties(Unit *u) { | |
188 | assert(u); | |
189 | ||
5af88058 | 190 | unit_invalidate_cgroup_members_masks(u); |
6c12b52e | 191 | unit_realize_cgroup(u); |
bc432dc7 | 192 | |
6c12b52e LP |
193 | return 0; |
194 | } | |
2d4a39e7 LP |
195 | |
196 | int bus_scope_send_request_stop(Scope *s) { | |
4afd3348 | 197 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; |
2d4a39e7 LP |
198 | _cleanup_free_ char *p = NULL; |
199 | int r; | |
200 | ||
201 | assert(s); | |
202 | ||
203 | if (!s->controller) | |
204 | return 0; | |
205 | ||
206 | p = unit_dbus_path(UNIT(s)); | |
207 | if (!p) | |
208 | return -ENOMEM; | |
209 | ||
210 | r = sd_bus_message_new_signal( | |
211 | UNIT(s)->manager->api_bus, | |
151b9b96 | 212 | &m, |
2d4a39e7 LP |
213 | p, |
214 | "org.freedesktop.systemd1.Scope", | |
151b9b96 | 215 | "RequestStop"); |
2d4a39e7 LP |
216 | if (r < 0) |
217 | return r; | |
218 | ||
f4b0fb23 | 219 | return sd_bus_send_to(UNIT(s)->manager->api_bus, m, s->controller, NULL); |
2d4a39e7 | 220 | } |
371c0b79 LP |
221 | |
222 | static int on_controller_gone(sd_bus_track *track, void *userdata) { | |
223 | Scope *s = userdata; | |
224 | ||
225 | assert(track); | |
226 | ||
227 | if (s->controller) { | |
228 | log_unit_debug(UNIT(s), "Controller %s disappeared from bus.", s->controller); | |
229 | unit_add_to_dbus_queue(UNIT(s)); | |
230 | s->controller = mfree(s->controller); | |
231 | } | |
232 | ||
233 | s->controller_track = sd_bus_track_unref(s->controller_track); | |
234 | ||
235 | return 0; | |
236 | } | |
237 | ||
238 | int bus_scope_track_controller(Scope *s) { | |
239 | int r; | |
240 | ||
241 | assert(s); | |
242 | ||
243 | if (!s->controller || s->controller_track) | |
244 | return 0; | |
245 | ||
246 | r = sd_bus_track_new(UNIT(s)->manager->api_bus, &s->controller_track, on_controller_gone, s); | |
247 | if (r < 0) | |
248 | return r; | |
249 | ||
250 | r = sd_bus_track_add_name(s->controller_track, s->controller); | |
251 | if (r < 0) { | |
252 | s->controller_track = sd_bus_track_unref(s->controller_track); | |
253 | return r; | |
254 | } | |
255 | ||
256 | return 0; | |
257 | } |