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19befb2d 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 | ||
22 | #include "sd-bus.h" | |
23 | #include "bus-control.h" | |
24 | #include "bus-objects.h" | |
25 | #include "bus-slot.h" | |
26 | ||
27 | sd_bus_slot *bus_slot_allocate( | |
28 | sd_bus *bus, | |
29 | bool floating, | |
30 | BusSlotType type, | |
31 | size_t extra, | |
32 | void *userdata) { | |
33 | ||
34 | sd_bus_slot *slot; | |
35 | ||
36 | assert(bus); | |
37 | ||
38 | slot = malloc0(offsetof(sd_bus_slot, reply_callback) + extra); | |
39 | if (!slot) | |
40 | return NULL; | |
41 | ||
42 | slot->n_ref = 1; | |
43 | slot->type = type; | |
44 | slot->bus = bus; | |
45 | slot->floating = floating; | |
46 | slot->userdata = userdata; | |
47 | ||
48 | if (!floating) | |
49 | sd_bus_ref(bus); | |
50 | ||
51 | LIST_PREPEND(slots, bus->slots, slot); | |
52 | ||
53 | return slot; | |
54 | } | |
55 | ||
56 | _public_ sd_bus_slot* sd_bus_slot_ref(sd_bus_slot *slot) { | |
57 | assert_return(slot, NULL); | |
58 | ||
59 | assert(slot->n_ref > 0); | |
60 | ||
61 | slot->n_ref++; | |
62 | return slot; | |
63 | } | |
64 | ||
65 | void bus_slot_disconnect(sd_bus_slot *slot) { | |
66 | sd_bus *bus; | |
67 | ||
68 | assert(slot); | |
69 | ||
a71fe8b8 | 70 | if (!slot->bus) |
19befb2d LP |
71 | return; |
72 | ||
a71fe8b8 LP |
73 | switch (slot->type) { |
74 | ||
19befb2d LP |
75 | case BUS_REPLY_CALLBACK: |
76 | ||
77 | if (slot->reply_callback.cookie != 0) | |
c9fe4af7 | 78 | ordered_hashmap_remove(slot->bus->reply_callbacks, &slot->reply_callback.cookie); |
19befb2d LP |
79 | |
80 | if (slot->reply_callback.timeout != 0) | |
81 | prioq_remove(slot->bus->reply_callbacks_prioq, &slot->reply_callback, &slot->reply_callback.prioq_idx); | |
82 | ||
83 | break; | |
84 | ||
85 | case BUS_FILTER_CALLBACK: | |
86 | slot->bus->filter_callbacks_modified = true; | |
87 | LIST_REMOVE(callbacks, slot->bus->filter_callbacks, &slot->filter_callback); | |
88 | break; | |
89 | ||
90 | case BUS_MATCH_CALLBACK: | |
91 | ||
cc65fe5e | 92 | if (slot->match_added) |
19befb2d LP |
93 | bus_remove_match_internal(slot->bus, slot->match_callback.match_string, slot->match_callback.cookie); |
94 | ||
95 | slot->bus->match_callbacks_modified = true; | |
96 | bus_match_remove(&slot->bus->match_callbacks, &slot->match_callback); | |
97 | ||
98 | free(slot->match_callback.match_string); | |
99 | ||
100 | break; | |
101 | ||
102 | case BUS_NODE_CALLBACK: | |
103 | ||
104 | if (slot->node_callback.node) { | |
105 | LIST_REMOVE(callbacks, slot->node_callback.node->callbacks, &slot->node_callback); | |
106 | slot->bus->nodes_modified = true; | |
107 | ||
108 | bus_node_gc(slot->bus, slot->node_callback.node); | |
109 | } | |
110 | ||
111 | break; | |
112 | ||
113 | case BUS_NODE_ENUMERATOR: | |
114 | ||
115 | if (slot->node_enumerator.node) { | |
116 | LIST_REMOVE(enumerators, slot->node_enumerator.node->enumerators, &slot->node_enumerator); | |
117 | slot->bus->nodes_modified = true; | |
118 | ||
119 | bus_node_gc(slot->bus, slot->node_enumerator.node); | |
120 | } | |
121 | ||
122 | break; | |
123 | ||
124 | case BUS_NODE_OBJECT_MANAGER: | |
125 | ||
126 | if (slot->node_object_manager.node) { | |
127 | LIST_REMOVE(object_managers, slot->node_object_manager.node->object_managers, &slot->node_object_manager); | |
128 | slot->bus->nodes_modified = true; | |
129 | ||
130 | bus_node_gc(slot->bus, slot->node_object_manager.node); | |
131 | } | |
132 | ||
133 | break; | |
134 | ||
135 | case BUS_NODE_VTABLE: | |
136 | ||
137 | if (slot->node_vtable.node && slot->node_vtable.interface && slot->node_vtable.vtable) { | |
138 | const sd_bus_vtable *v; | |
139 | ||
140 | for (v = slot->node_vtable.vtable; v->type != _SD_BUS_VTABLE_END; v++) { | |
141 | struct vtable_member *x = NULL; | |
142 | ||
143 | switch (v->type) { | |
144 | ||
145 | case _SD_BUS_VTABLE_METHOD: { | |
146 | struct vtable_member key; | |
147 | ||
148 | key.path = slot->node_vtable.node->path; | |
149 | key.interface = slot->node_vtable.interface; | |
150 | key.member = v->x.method.member; | |
151 | ||
152 | x = hashmap_remove(slot->bus->vtable_methods, &key); | |
153 | break; | |
154 | } | |
155 | ||
156 | case _SD_BUS_VTABLE_PROPERTY: | |
157 | case _SD_BUS_VTABLE_WRITABLE_PROPERTY: { | |
158 | struct vtable_member key; | |
159 | ||
160 | key.path = slot->node_vtable.node->path; | |
161 | key.interface = slot->node_vtable.interface; | |
162 | key.member = v->x.method.member; | |
163 | ||
164 | ||
165 | x = hashmap_remove(slot->bus->vtable_properties, &key); | |
166 | break; | |
167 | }} | |
168 | ||
169 | free(x); | |
170 | } | |
171 | } | |
172 | ||
173 | free(slot->node_vtable.interface); | |
174 | ||
175 | if (slot->node_vtable.node) { | |
176 | LIST_REMOVE(vtables, slot->node_vtable.node->vtables, &slot->node_vtable); | |
177 | slot->bus->nodes_modified = true; | |
178 | ||
179 | bus_node_gc(slot->bus, slot->node_vtable.node); | |
180 | } | |
181 | ||
182 | break; | |
a71fe8b8 LP |
183 | |
184 | default: | |
185 | assert_not_reached("Wut? Unknown slot type?"); | |
19befb2d | 186 | } |
a71fe8b8 | 187 | |
19befb2d LP |
188 | bus = slot->bus; |
189 | ||
a71fe8b8 | 190 | slot->type = _BUS_SLOT_INVALID; |
19befb2d LP |
191 | slot->bus = NULL; |
192 | LIST_REMOVE(slots, bus->slots, slot); | |
193 | ||
194 | if (!slot->floating) | |
195 | sd_bus_unref(bus); | |
196 | } | |
197 | ||
198 | _public_ sd_bus_slot* sd_bus_slot_unref(sd_bus_slot *slot) { | |
199 | ||
200 | if (!slot) | |
201 | return NULL; | |
202 | ||
203 | assert(slot->n_ref > 0); | |
204 | ||
205 | if (slot->n_ref > 1) { | |
206 | slot->n_ref --; | |
207 | return NULL; | |
208 | } | |
209 | ||
210 | bus_slot_disconnect(slot); | |
9cbfc66c | 211 | free(slot->description); |
19befb2d LP |
212 | free(slot); |
213 | ||
214 | return NULL; | |
215 | } | |
216 | ||
217 | _public_ sd_bus* sd_bus_slot_get_bus(sd_bus_slot *slot) { | |
218 | assert_return(slot, NULL); | |
219 | ||
220 | return slot->bus; | |
221 | } | |
222 | ||
223 | _public_ void *sd_bus_slot_get_userdata(sd_bus_slot *slot) { | |
224 | assert_return(slot, NULL); | |
225 | ||
226 | return slot->userdata; | |
227 | } | |
228 | ||
229 | _public_ void *sd_bus_slot_set_userdata(sd_bus_slot *slot, void *userdata) { | |
230 | void *ret; | |
231 | ||
232 | assert_return(slot, NULL); | |
233 | ||
234 | ret = slot->userdata; | |
235 | slot->userdata = userdata; | |
236 | ||
237 | return ret; | |
238 | } | |
239 | ||
240 | _public_ sd_bus_message *sd_bus_slot_get_current_message(sd_bus_slot *slot) { | |
241 | assert_return(slot, NULL); | |
a71fe8b8 | 242 | assert_return(slot->type >= 0, NULL); |
19befb2d LP |
243 | |
244 | if (slot->bus->current_slot != slot) | |
245 | return NULL; | |
246 | ||
247 | return slot->bus->current_message; | |
248 | } | |
caa82984 LP |
249 | |
250 | _public_ sd_bus_message_handler_t sd_bus_slot_get_current_handler(sd_bus_slot *slot) { | |
251 | assert_return(slot, NULL); | |
252 | assert_return(slot->type >= 0, NULL); | |
253 | ||
254 | if (slot->bus->current_slot != slot) | |
255 | return NULL; | |
256 | ||
257 | return slot->bus->current_handler; | |
258 | } | |
259 | ||
260 | _public_ void* sd_bus_slot_get_current_userdata(sd_bus_slot *slot) { | |
261 | assert_return(slot, NULL); | |
262 | assert_return(slot->type >= 0, NULL); | |
263 | ||
264 | if (slot->bus->current_slot != slot) | |
265 | return NULL; | |
266 | ||
267 | return slot->bus->current_userdata; | |
268 | } | |
9cbfc66c LP |
269 | |
270 | _public_ int sd_bus_slot_set_description(sd_bus_slot *slot, const char *description) { | |
271 | assert_return(slot, -EINVAL); | |
272 | ||
273 | return free_and_strdup(&slot->description, description); | |
274 | } | |
275 | ||
276 | _public_ int sd_bus_slot_get_description(sd_bus_slot *slot, char **description) { | |
277 | assert_return(slot, -EINVAL); | |
278 | assert_return(description, -EINVAL); | |
279 | assert_return(slot->description, -ENXIO); | |
280 | ||
281 | *description = slot->description; | |
282 | return 0; | |
283 | } |