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6c12b52e LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Lennart Poettering | |
7 | ||
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. | |
12 | ||
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. | |
17 | ||
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/>. | |
20 | ***/ | |
21 | ||
718db961 LP |
22 | #include "unit.h" |
23 | #include "scope.h" | |
6c12b52e | 24 | #include "dbus-unit.h" |
6c12b52e LP |
25 | #include "dbus-cgroup.h" |
26 | #include "dbus-kill.h" | |
6c12b52e | 27 | #include "dbus-scope.h" |
718db961 | 28 | #include "bus-util.h" |
2d4a39e7 | 29 | #include "bus-internal.h" |
6c12b52e | 30 | |
a911bb9a LP |
31 | static int bus_scope_abandon(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { |
32 | Scope *s = userdata; | |
33 | ||
34 | assert(bus); | |
35 | assert(message); | |
36 | assert(s); | |
37 | ||
38 | return scope_abandon(s); | |
39 | } | |
40 | ||
718db961 | 41 | static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_result, scope_result, ScopeResult); |
6c12b52e | 42 | |
718db961 LP |
43 | const sd_bus_vtable bus_scope_vtable[] = { |
44 | SD_BUS_VTABLE_START(0), | |
2d4a39e7 | 45 | SD_BUS_PROPERTY("Controller", "s", NULL, offsetof(Scope, controller), SD_BUS_VTABLE_PROPERTY_CONST), |
556089dc | 46 | SD_BUS_PROPERTY("TimeoutStopUSec", "t", bus_property_get_usec, offsetof(Scope, timeout_stop_usec), SD_BUS_VTABLE_PROPERTY_CONST), |
718db961 | 47 | SD_BUS_PROPERTY("Result", "s", property_get_result, offsetof(Scope, result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
2d4a39e7 | 48 | SD_BUS_SIGNAL("RequestStop", NULL, 0), |
a911bb9a | 49 | SD_BUS_METHOD("Abandon", NULL, NULL, bus_scope_abandon, 0), |
718db961 LP |
50 | SD_BUS_VTABLE_END |
51 | }; | |
6c12b52e | 52 | |
9f2e86af | 53 | static int bus_scope_set_transient_property( |
6c12b52e LP |
54 | Scope *s, |
55 | const char *name, | |
718db961 | 56 | sd_bus_message *message, |
6c12b52e | 57 | UnitSetPropertiesMode mode, |
718db961 | 58 | sd_bus_error *error) { |
6c12b52e LP |
59 | |
60 | int r; | |
61 | ||
6c12b52e | 62 | assert(s); |
718db961 LP |
63 | assert(name); |
64 | assert(message); | |
6c12b52e LP |
65 | |
66 | if (streq(name, "PIDs")) { | |
294a90cc | 67 | unsigned n = 0; |
718db961 | 68 | uint32_t pid; |
6c12b52e | 69 | |
718db961 LP |
70 | r = sd_bus_message_enter_container(message, 'a', "u"); |
71 | if (r < 0) | |
72 | return r; | |
6c12b52e | 73 | |
718db961 | 74 | while ((r = sd_bus_message_read(message, "u", &pid)) > 0) { |
6c12b52e LP |
75 | |
76 | if (pid <= 1) | |
77 | return -EINVAL; | |
78 | ||
adb3a45d | 79 | if (mode != UNIT_CHECK) { |
a911bb9a | 80 | r = unit_watch_pid(UNIT(s), pid); |
adb3a45d LP |
81 | if (r < 0 && r != -EEXIST) |
82 | return r; | |
83 | } | |
6c12b52e | 84 | |
adb3a45d | 85 | n++; |
6c12b52e | 86 | } |
718db961 LP |
87 | if (r < 0) |
88 | return r; | |
89 | ||
90 | r = sd_bus_message_exit_container(message); | |
91 | if (r < 0) | |
92 | return r; | |
6c12b52e | 93 | |
adb3a45d | 94 | if (n <= 0) |
6c12b52e LP |
95 | return -EINVAL; |
96 | ||
97 | return 1; | |
cc23f9f1 | 98 | |
2d4a39e7 LP |
99 | } else if (streq(name, "Controller")) { |
100 | const char *controller; | |
101 | char *c; | |
102 | ||
103 | r = sd_bus_message_read(message, "s", &controller); | |
104 | if (r < 0) | |
105 | return r; | |
106 | ||
107 | if (!isempty(controller) && !service_name_is_valid(controller)) | |
108 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Controller '%s' is not a valid bus name.", controller); | |
109 | ||
110 | if (mode != UNIT_CHECK) { | |
111 | if (isempty(controller)) | |
112 | c = NULL; | |
113 | else { | |
114 | c = strdup(controller); | |
115 | if (!c) | |
116 | return -ENOMEM; | |
117 | } | |
118 | ||
119 | free(s->controller); | |
120 | s->controller = c; | |
121 | } | |
122 | ||
123 | return 1; | |
124 | ||
cc23f9f1 LP |
125 | } else if (streq(name, "TimeoutStopUSec")) { |
126 | ||
cc23f9f1 | 127 | if (mode != UNIT_CHECK) { |
718db961 LP |
128 | r = sd_bus_message_read(message, "t", &s->timeout_stop_usec); |
129 | if (r < 0) | |
130 | return r; | |
131 | ||
132 | unit_write_drop_in_format(UNIT(s), mode, name, "[Scope]\nTimeoutStopSec=%lluus\n", (unsigned long long) s->timeout_stop_usec); | |
133 | } else { | |
134 | r = sd_bus_message_skip(message, "t"); | |
135 | if (r < 0) | |
136 | return r; | |
cc23f9f1 LP |
137 | } |
138 | ||
139 | return 1; | |
6c12b52e LP |
140 | } |
141 | ||
142 | return 0; | |
143 | } | |
144 | ||
145 | int bus_scope_set_property( | |
146 | Unit *u, | |
147 | const char *name, | |
718db961 | 148 | sd_bus_message *message, |
6c12b52e | 149 | UnitSetPropertiesMode mode, |
718db961 | 150 | sd_bus_error *error) { |
6c12b52e LP |
151 | |
152 | Scope *s = SCOPE(u); | |
153 | int r; | |
154 | ||
718db961 | 155 | assert(s); |
6c12b52e | 156 | assert(name); |
718db961 | 157 | assert(message); |
6c12b52e | 158 | |
718db961 | 159 | r = bus_cgroup_set_property(u, &s->cgroup_context, name, message, mode, error); |
6c12b52e LP |
160 | if (r != 0) |
161 | return r; | |
162 | ||
163 | if (u->load_state == UNIT_STUB) { | |
164 | /* While we are created we still accept PIDs */ | |
165 | ||
718db961 | 166 | r = bus_scope_set_transient_property(s, name, message, mode, error); |
6c12b52e LP |
167 | if (r != 0) |
168 | return r; | |
a6c0353b | 169 | |
718db961 | 170 | r = bus_kill_context_set_transient_property(u, &s->kill_context, name, message, mode, error); |
a6c0353b LP |
171 | if (r != 0) |
172 | return r; | |
6c12b52e LP |
173 | } |
174 | ||
175 | return 0; | |
176 | } | |
177 | ||
178 | int bus_scope_commit_properties(Unit *u) { | |
179 | assert(u); | |
180 | ||
181 | unit_realize_cgroup(u); | |
182 | return 0; | |
183 | } | |
2d4a39e7 LP |
184 | |
185 | int bus_scope_send_request_stop(Scope *s) { | |
186 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; | |
187 | _cleanup_free_ char *p = NULL; | |
188 | int r; | |
189 | ||
190 | assert(s); | |
191 | ||
192 | if (!s->controller) | |
193 | return 0; | |
194 | ||
195 | p = unit_dbus_path(UNIT(s)); | |
196 | if (!p) | |
197 | return -ENOMEM; | |
198 | ||
199 | r = sd_bus_message_new_signal( | |
200 | UNIT(s)->manager->api_bus, | |
201 | p, | |
202 | "org.freedesktop.systemd1.Scope", | |
203 | "RequestStop", | |
204 | &m); | |
205 | if (r < 0) | |
206 | return r; | |
207 | ||
208 | return sd_bus_send_to(UNIT(s)->manager->api_bus, m, /* s->controller */ NULL, NULL); | |
209 | } |