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Commit | Line | Data |
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2f28d2ff AL |
1 | /* |
2 | * QEMU Object Model | |
3 | * | |
4 | * Copyright IBM, Corp. 2011 | |
5 | * | |
6 | * Authors: | |
7 | * Anthony Liguori <aliguori@us.ibm.com> | |
8 | * | |
9 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
10 | * See the COPYING file in the top-level directory. | |
11 | */ | |
12 | ||
13 | #include "qemu/object.h" | |
14 | #include "qemu-common.h" | |
57c9fafe | 15 | #include "qapi/qapi-visit-core.h" |
b2cd7dee PB |
16 | #include "qapi/string-input-visitor.h" |
17 | #include "qapi/string-output-visitor.h" | |
2f28d2ff | 18 | |
7b7b7d18 PB |
19 | /* TODO: replace QObject with a simpler visitor to avoid a dependency |
20 | * of the QOM core on QObject? */ | |
21 | #include "qemu/qom-qobject.h" | |
22 | #include "qobject.h" | |
23 | #include "qbool.h" | |
24 | #include "qint.h" | |
25 | #include "qstring.h" | |
26 | ||
2f28d2ff AL |
27 | #define MAX_INTERFACES 32 |
28 | ||
29 | typedef struct InterfaceImpl InterfaceImpl; | |
30 | typedef struct TypeImpl TypeImpl; | |
31 | ||
32 | struct InterfaceImpl | |
33 | { | |
33e95c63 | 34 | const char *typename; |
2f28d2ff AL |
35 | }; |
36 | ||
37 | struct TypeImpl | |
38 | { | |
39 | const char *name; | |
40 | ||
41 | size_t class_size; | |
42 | ||
43 | size_t instance_size; | |
44 | ||
45 | void (*class_init)(ObjectClass *klass, void *data); | |
3b50e311 | 46 | void (*class_base_init)(ObjectClass *klass, void *data); |
2f28d2ff AL |
47 | void (*class_finalize)(ObjectClass *klass, void *data); |
48 | ||
49 | void *class_data; | |
50 | ||
51 | void (*instance_init)(Object *obj); | |
52 | void (*instance_finalize)(Object *obj); | |
53 | ||
54 | bool abstract; | |
55 | ||
56 | const char *parent; | |
57 | TypeImpl *parent_type; | |
58 | ||
59 | ObjectClass *class; | |
60 | ||
61 | int num_interfaces; | |
62 | InterfaceImpl interfaces[MAX_INTERFACES]; | |
63 | }; | |
64 | ||
9970bd88 PB |
65 | static Type type_interface; |
66 | ||
2f28d2ff AL |
67 | static GHashTable *type_table_get(void) |
68 | { | |
69 | static GHashTable *type_table; | |
70 | ||
71 | if (type_table == NULL) { | |
72 | type_table = g_hash_table_new(g_str_hash, g_str_equal); | |
73 | } | |
74 | ||
75 | return type_table; | |
76 | } | |
77 | ||
78 | static void type_table_add(TypeImpl *ti) | |
79 | { | |
80 | g_hash_table_insert(type_table_get(), (void *)ti->name, ti); | |
81 | } | |
82 | ||
83 | static TypeImpl *type_table_lookup(const char *name) | |
84 | { | |
85 | return g_hash_table_lookup(type_table_get(), name); | |
86 | } | |
87 | ||
049cb3cf | 88 | static TypeImpl *type_register_internal(const TypeInfo *info) |
2f28d2ff AL |
89 | { |
90 | TypeImpl *ti = g_malloc0(sizeof(*ti)); | |
33e95c63 | 91 | int i; |
2f28d2ff AL |
92 | |
93 | g_assert(info->name != NULL); | |
94 | ||
73093354 AL |
95 | if (type_table_lookup(info->name) != NULL) { |
96 | fprintf(stderr, "Registering `%s' which already exists\n", info->name); | |
97 | abort(); | |
98 | } | |
99 | ||
2f28d2ff AL |
100 | ti->name = g_strdup(info->name); |
101 | ti->parent = g_strdup(info->parent); | |
102 | ||
103 | ti->class_size = info->class_size; | |
104 | ti->instance_size = info->instance_size; | |
105 | ||
106 | ti->class_init = info->class_init; | |
3b50e311 | 107 | ti->class_base_init = info->class_base_init; |
2f28d2ff AL |
108 | ti->class_finalize = info->class_finalize; |
109 | ti->class_data = info->class_data; | |
110 | ||
111 | ti->instance_init = info->instance_init; | |
112 | ti->instance_finalize = info->instance_finalize; | |
113 | ||
114 | ti->abstract = info->abstract; | |
115 | ||
33e95c63 AL |
116 | for (i = 0; info->interfaces && info->interfaces[i].type; i++) { |
117 | ti->interfaces[i].typename = g_strdup(info->interfaces[i].type); | |
2f28d2ff | 118 | } |
33e95c63 | 119 | ti->num_interfaces = i; |
2f28d2ff AL |
120 | |
121 | type_table_add(ti); | |
122 | ||
123 | return ti; | |
124 | } | |
125 | ||
049cb3cf PB |
126 | TypeImpl *type_register(const TypeInfo *info) |
127 | { | |
128 | assert(info->parent); | |
129 | return type_register_internal(info); | |
130 | } | |
131 | ||
2f28d2ff AL |
132 | TypeImpl *type_register_static(const TypeInfo *info) |
133 | { | |
134 | return type_register(info); | |
135 | } | |
136 | ||
137 | static TypeImpl *type_get_by_name(const char *name) | |
138 | { | |
139 | if (name == NULL) { | |
140 | return NULL; | |
141 | } | |
142 | ||
143 | return type_table_lookup(name); | |
144 | } | |
145 | ||
146 | static TypeImpl *type_get_parent(TypeImpl *type) | |
147 | { | |
148 | if (!type->parent_type && type->parent) { | |
149 | type->parent_type = type_get_by_name(type->parent); | |
150 | g_assert(type->parent_type != NULL); | |
151 | } | |
152 | ||
153 | return type->parent_type; | |
154 | } | |
155 | ||
156 | static bool type_has_parent(TypeImpl *type) | |
157 | { | |
158 | return (type->parent != NULL); | |
159 | } | |
160 | ||
161 | static size_t type_class_get_size(TypeImpl *ti) | |
162 | { | |
163 | if (ti->class_size) { | |
164 | return ti->class_size; | |
165 | } | |
166 | ||
167 | if (type_has_parent(ti)) { | |
168 | return type_class_get_size(type_get_parent(ti)); | |
169 | } | |
170 | ||
171 | return sizeof(ObjectClass); | |
172 | } | |
173 | ||
aca59af6 IM |
174 | static size_t type_object_get_size(TypeImpl *ti) |
175 | { | |
176 | if (ti->instance_size) { | |
177 | return ti->instance_size; | |
178 | } | |
179 | ||
180 | if (type_has_parent(ti)) { | |
181 | return type_object_get_size(type_get_parent(ti)); | |
182 | } | |
183 | ||
184 | return 0; | |
185 | } | |
186 | ||
33e95c63 | 187 | static bool type_is_ancestor(TypeImpl *type, TypeImpl *target_type) |
2f28d2ff | 188 | { |
33e95c63 AL |
189 | assert(target_type); |
190 | ||
191 | /* Check if typename is a direct ancestor of type */ | |
192 | while (type) { | |
193 | if (type == target_type) { | |
194 | return true; | |
195 | } | |
2f28d2ff | 196 | |
33e95c63 AL |
197 | type = type_get_parent(type); |
198 | } | |
199 | ||
200 | return false; | |
201 | } | |
202 | ||
203 | static void type_initialize(TypeImpl *ti); | |
204 | ||
205 | static void type_initialize_interface(TypeImpl *ti, const char *parent) | |
206 | { | |
207 | InterfaceClass *new_iface; | |
208 | TypeInfo info = { }; | |
209 | TypeImpl *iface_impl; | |
210 | ||
211 | info.parent = parent; | |
212 | info.name = g_strdup_printf("%s::%s", ti->name, info.parent); | |
213 | info.abstract = true; | |
214 | ||
215 | iface_impl = type_register(&info); | |
216 | type_initialize(iface_impl); | |
217 | g_free((char *)info.name); | |
218 | ||
219 | new_iface = (InterfaceClass *)iface_impl->class; | |
220 | new_iface->concrete_class = ti->class; | |
221 | ||
222 | ti->class->interfaces = g_slist_append(ti->class->interfaces, | |
223 | iface_impl->class); | |
2f28d2ff AL |
224 | } |
225 | ||
ac451033 | 226 | static void type_initialize(TypeImpl *ti) |
2f28d2ff | 227 | { |
745549c8 | 228 | TypeImpl *parent; |
2f28d2ff AL |
229 | |
230 | if (ti->class) { | |
231 | return; | |
232 | } | |
233 | ||
234 | ti->class_size = type_class_get_size(ti); | |
aca59af6 | 235 | ti->instance_size = type_object_get_size(ti); |
2f28d2ff AL |
236 | |
237 | ti->class = g_malloc0(ti->class_size); | |
2f28d2ff | 238 | |
745549c8 PB |
239 | parent = type_get_parent(ti); |
240 | if (parent) { | |
ac451033 | 241 | type_initialize(parent); |
33e95c63 AL |
242 | GSList *e; |
243 | int i; | |
2f28d2ff | 244 | |
2f28d2ff | 245 | g_assert(parent->class_size <= ti->class_size); |
745549c8 | 246 | memcpy(ti->class, parent->class, parent->class_size); |
33e95c63 AL |
247 | |
248 | for (e = parent->class->interfaces; e; e = e->next) { | |
249 | ObjectClass *iface = e->data; | |
250 | type_initialize_interface(ti, object_class_get_name(iface)); | |
251 | } | |
252 | ||
253 | for (i = 0; i < ti->num_interfaces; i++) { | |
254 | TypeImpl *t = type_get_by_name(ti->interfaces[i].typename); | |
255 | for (e = ti->class->interfaces; e; e = e->next) { | |
256 | TypeImpl *target_type = OBJECT_CLASS(e->data)->type; | |
257 | ||
258 | if (type_is_ancestor(target_type, t)) { | |
259 | break; | |
260 | } | |
261 | } | |
262 | ||
263 | if (e) { | |
264 | continue; | |
265 | } | |
266 | ||
267 | type_initialize_interface(ti, ti->interfaces[i].typename); | |
268 | } | |
745549c8 | 269 | } |
2f28d2ff | 270 | |
745549c8 | 271 | ti->class->type = ti; |
3b50e311 | 272 | |
745549c8 PB |
273 | while (parent) { |
274 | if (parent->class_base_init) { | |
275 | parent->class_base_init(ti->class, ti->class_data); | |
3b50e311 | 276 | } |
745549c8 | 277 | parent = type_get_parent(parent); |
2f28d2ff AL |
278 | } |
279 | ||
2f28d2ff AL |
280 | if (ti->class_init) { |
281 | ti->class_init(ti->class, ti->class_data); | |
282 | } | |
2f28d2ff | 283 | |
2f28d2ff | 284 | |
2f28d2ff AL |
285 | } |
286 | ||
287 | static void object_init_with_type(Object *obj, TypeImpl *ti) | |
288 | { | |
2f28d2ff AL |
289 | if (type_has_parent(ti)) { |
290 | object_init_with_type(obj, type_get_parent(ti)); | |
291 | } | |
292 | ||
2f28d2ff AL |
293 | if (ti->instance_init) { |
294 | ti->instance_init(obj); | |
295 | } | |
296 | } | |
297 | ||
298 | void object_initialize_with_type(void *data, TypeImpl *type) | |
299 | { | |
300 | Object *obj = data; | |
301 | ||
302 | g_assert(type != NULL); | |
ac451033 | 303 | type_initialize(type); |
aca59af6 IM |
304 | |
305 | g_assert(type->instance_size >= sizeof(Object)); | |
2f28d2ff AL |
306 | g_assert(type->abstract == false); |
307 | ||
308 | memset(obj, 0, type->instance_size); | |
309 | obj->class = type->class; | |
764b6312 | 310 | object_ref(obj); |
57c9fafe | 311 | QTAILQ_INIT(&obj->properties); |
2f28d2ff AL |
312 | object_init_with_type(obj, type); |
313 | } | |
314 | ||
315 | void object_initialize(void *data, const char *typename) | |
316 | { | |
317 | TypeImpl *type = type_get_by_name(typename); | |
318 | ||
319 | object_initialize_with_type(data, type); | |
320 | } | |
321 | ||
5d9d3f47 AF |
322 | static inline bool object_property_is_child(ObjectProperty *prop) |
323 | { | |
324 | return strstart(prop->type, "child<", NULL); | |
325 | } | |
326 | ||
327 | static inline bool object_property_is_link(ObjectProperty *prop) | |
328 | { | |
329 | return strstart(prop->type, "link<", NULL); | |
330 | } | |
331 | ||
57c9fafe AL |
332 | static void object_property_del_all(Object *obj) |
333 | { | |
334 | while (!QTAILQ_EMPTY(&obj->properties)) { | |
335 | ObjectProperty *prop = QTAILQ_FIRST(&obj->properties); | |
336 | ||
337 | QTAILQ_REMOVE(&obj->properties, prop, node); | |
338 | ||
339 | if (prop->release) { | |
340 | prop->release(obj, prop->name, prop->opaque); | |
341 | } | |
342 | ||
343 | g_free(prop->name); | |
344 | g_free(prop->type); | |
345 | g_free(prop); | |
346 | } | |
347 | } | |
348 | ||
349 | static void object_property_del_child(Object *obj, Object *child, Error **errp) | |
350 | { | |
351 | ObjectProperty *prop; | |
352 | ||
353 | QTAILQ_FOREACH(prop, &obj->properties, node) { | |
5d9d3f47 | 354 | if (object_property_is_child(prop) && prop->opaque == child) { |
57c9fafe | 355 | object_property_del(obj, prop->name, errp); |
6c1fdcf9 | 356 | break; |
57c9fafe AL |
357 | } |
358 | } | |
359 | } | |
360 | ||
361 | void object_unparent(Object *obj) | |
362 | { | |
363 | if (obj->parent) { | |
364 | object_property_del_child(obj->parent, obj, NULL); | |
365 | } | |
667d22d1 PB |
366 | if (obj->class->unparent) { |
367 | (obj->class->unparent)(obj); | |
368 | } | |
57c9fafe AL |
369 | } |
370 | ||
2f28d2ff AL |
371 | static void object_deinit(Object *obj, TypeImpl *type) |
372 | { | |
373 | if (type->instance_finalize) { | |
374 | type->instance_finalize(obj); | |
375 | } | |
376 | ||
2f28d2ff AL |
377 | if (type_has_parent(type)) { |
378 | object_deinit(obj, type_get_parent(type)); | |
379 | } | |
380 | } | |
381 | ||
339c2708 | 382 | static void object_finalize(void *data) |
2f28d2ff AL |
383 | { |
384 | Object *obj = data; | |
385 | TypeImpl *ti = obj->class->type; | |
386 | ||
387 | object_deinit(obj, ti); | |
57c9fafe | 388 | object_property_del_all(obj); |
db85b575 AL |
389 | |
390 | g_assert(obj->ref == 0); | |
fde9bf44 PB |
391 | if (obj->free) { |
392 | obj->free(obj); | |
393 | } | |
2f28d2ff AL |
394 | } |
395 | ||
396 | Object *object_new_with_type(Type type) | |
397 | { | |
398 | Object *obj; | |
399 | ||
400 | g_assert(type != NULL); | |
ac451033 | 401 | type_initialize(type); |
2f28d2ff AL |
402 | |
403 | obj = g_malloc(type->instance_size); | |
404 | object_initialize_with_type(obj, type); | |
fde9bf44 | 405 | obj->free = g_free; |
2f28d2ff AL |
406 | |
407 | return obj; | |
408 | } | |
409 | ||
410 | Object *object_new(const char *typename) | |
411 | { | |
412 | TypeImpl *ti = type_get_by_name(typename); | |
413 | ||
414 | return object_new_with_type(ti); | |
415 | } | |
416 | ||
417 | void object_delete(Object *obj) | |
418 | { | |
da5a44e8 PB |
419 | object_unparent(obj); |
420 | g_assert(obj->ref == 1); | |
db85b575 | 421 | object_unref(obj); |
2f28d2ff AL |
422 | } |
423 | ||
2f28d2ff AL |
424 | Object *object_dynamic_cast(Object *obj, const char *typename) |
425 | { | |
b7f43fe4 | 426 | if (obj && object_class_dynamic_cast(object_get_class(obj), typename)) { |
acc4af3f PB |
427 | return obj; |
428 | } | |
429 | ||
2f28d2ff AL |
430 | return NULL; |
431 | } | |
432 | ||
2f28d2ff AL |
433 | Object *object_dynamic_cast_assert(Object *obj, const char *typename) |
434 | { | |
435 | Object *inst; | |
436 | ||
437 | inst = object_dynamic_cast(obj, typename); | |
438 | ||
b7f43fe4 | 439 | if (!inst && obj) { |
2f28d2ff AL |
440 | fprintf(stderr, "Object %p is not an instance of type %s\n", |
441 | obj, typename); | |
442 | abort(); | |
443 | } | |
444 | ||
445 | return inst; | |
446 | } | |
447 | ||
448 | ObjectClass *object_class_dynamic_cast(ObjectClass *class, | |
449 | const char *typename) | |
450 | { | |
451 | TypeImpl *target_type = type_get_by_name(typename); | |
452 | TypeImpl *type = class->type; | |
33e95c63 | 453 | ObjectClass *ret = NULL; |
2f28d2ff | 454 | |
33e95c63 AL |
455 | if (type->num_interfaces && type_is_ancestor(target_type, type_interface)) { |
456 | int found = 0; | |
457 | GSList *i; | |
2f28d2ff | 458 | |
33e95c63 AL |
459 | for (i = class->interfaces; i; i = i->next) { |
460 | ObjectClass *target_class = i->data; | |
461 | ||
462 | if (type_is_ancestor(target_class->type, target_type)) { | |
463 | ret = target_class; | |
464 | found++; | |
465 | } | |
466 | } | |
467 | ||
468 | /* The match was ambiguous, don't allow a cast */ | |
469 | if (found > 1) { | |
470 | ret = NULL; | |
471 | } | |
472 | } else if (type_is_ancestor(type, target_type)) { | |
473 | ret = class; | |
2f28d2ff AL |
474 | } |
475 | ||
33e95c63 | 476 | return ret; |
2f28d2ff AL |
477 | } |
478 | ||
479 | ObjectClass *object_class_dynamic_cast_assert(ObjectClass *class, | |
480 | const char *typename) | |
481 | { | |
482 | ObjectClass *ret = object_class_dynamic_cast(class, typename); | |
483 | ||
484 | if (!ret) { | |
485 | fprintf(stderr, "Object %p is not an instance of type %s\n", | |
486 | class, typename); | |
487 | abort(); | |
488 | } | |
489 | ||
490 | return ret; | |
491 | } | |
492 | ||
493 | const char *object_get_typename(Object *obj) | |
494 | { | |
495 | return obj->class->type->name; | |
496 | } | |
497 | ||
498 | ObjectClass *object_get_class(Object *obj) | |
499 | { | |
500 | return obj->class; | |
501 | } | |
502 | ||
503 | const char *object_class_get_name(ObjectClass *klass) | |
504 | { | |
505 | return klass->type->name; | |
506 | } | |
507 | ||
508 | ObjectClass *object_class_by_name(const char *typename) | |
509 | { | |
510 | TypeImpl *type = type_get_by_name(typename); | |
511 | ||
512 | if (!type) { | |
513 | return NULL; | |
514 | } | |
515 | ||
ac451033 | 516 | type_initialize(type); |
2f28d2ff AL |
517 | |
518 | return type->class; | |
519 | } | |
520 | ||
e7cce67f PB |
521 | ObjectClass *object_class_get_parent(ObjectClass *class) |
522 | { | |
523 | TypeImpl *type = type_get_parent(class->type); | |
524 | ||
525 | if (!type) { | |
526 | return NULL; | |
527 | } | |
528 | ||
529 | type_initialize(type); | |
530 | ||
531 | return type->class; | |
532 | } | |
533 | ||
2f28d2ff AL |
534 | typedef struct OCFData |
535 | { | |
536 | void (*fn)(ObjectClass *klass, void *opaque); | |
93c511a1 AL |
537 | const char *implements_type; |
538 | bool include_abstract; | |
2f28d2ff AL |
539 | void *opaque; |
540 | } OCFData; | |
541 | ||
542 | static void object_class_foreach_tramp(gpointer key, gpointer value, | |
543 | gpointer opaque) | |
544 | { | |
545 | OCFData *data = opaque; | |
546 | TypeImpl *type = value; | |
93c511a1 | 547 | ObjectClass *k; |
2f28d2ff | 548 | |
ac451033 | 549 | type_initialize(type); |
93c511a1 | 550 | k = type->class; |
2f28d2ff | 551 | |
93c511a1 AL |
552 | if (!data->include_abstract && type->abstract) { |
553 | return; | |
554 | } | |
555 | ||
556 | if (data->implements_type && | |
557 | !object_class_dynamic_cast(k, data->implements_type)) { | |
558 | return; | |
559 | } | |
560 | ||
561 | data->fn(k, data->opaque); | |
2f28d2ff AL |
562 | } |
563 | ||
564 | void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque), | |
93c511a1 | 565 | const char *implements_type, bool include_abstract, |
2f28d2ff AL |
566 | void *opaque) |
567 | { | |
93c511a1 | 568 | OCFData data = { fn, implements_type, include_abstract, opaque }; |
2f28d2ff AL |
569 | |
570 | g_hash_table_foreach(type_table_get(), object_class_foreach_tramp, &data); | |
571 | } | |
57c9fafe | 572 | |
32efc535 PB |
573 | int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque), |
574 | void *opaque) | |
575 | { | |
576 | ObjectProperty *prop; | |
577 | int ret = 0; | |
578 | ||
579 | QTAILQ_FOREACH(prop, &obj->properties, node) { | |
580 | if (object_property_is_child(prop)) { | |
581 | ret = fn(prop->opaque, opaque); | |
582 | if (ret != 0) { | |
583 | break; | |
584 | } | |
585 | } | |
586 | } | |
587 | return ret; | |
588 | } | |
589 | ||
418ba9e5 AF |
590 | static void object_class_get_list_tramp(ObjectClass *klass, void *opaque) |
591 | { | |
592 | GSList **list = opaque; | |
593 | ||
594 | *list = g_slist_prepend(*list, klass); | |
595 | } | |
596 | ||
597 | GSList *object_class_get_list(const char *implements_type, | |
598 | bool include_abstract) | |
599 | { | |
600 | GSList *list = NULL; | |
601 | ||
602 | object_class_foreach(object_class_get_list_tramp, | |
603 | implements_type, include_abstract, &list); | |
604 | return list; | |
605 | } | |
606 | ||
57c9fafe AL |
607 | void object_ref(Object *obj) |
608 | { | |
609 | obj->ref++; | |
610 | } | |
611 | ||
612 | void object_unref(Object *obj) | |
613 | { | |
614 | g_assert(obj->ref > 0); | |
615 | obj->ref--; | |
616 | ||
617 | /* parent always holds a reference to its children */ | |
618 | if (obj->ref == 0) { | |
619 | object_finalize(obj); | |
620 | } | |
621 | } | |
622 | ||
623 | void object_property_add(Object *obj, const char *name, const char *type, | |
624 | ObjectPropertyAccessor *get, | |
625 | ObjectPropertyAccessor *set, | |
626 | ObjectPropertyRelease *release, | |
627 | void *opaque, Error **errp) | |
628 | { | |
629 | ObjectProperty *prop = g_malloc0(sizeof(*prop)); | |
630 | ||
631 | prop->name = g_strdup(name); | |
632 | prop->type = g_strdup(type); | |
633 | ||
634 | prop->get = get; | |
635 | prop->set = set; | |
636 | prop->release = release; | |
637 | prop->opaque = opaque; | |
638 | ||
639 | QTAILQ_INSERT_TAIL(&obj->properties, prop, node); | |
640 | } | |
641 | ||
89bfe000 PB |
642 | ObjectProperty *object_property_find(Object *obj, const char *name, |
643 | Error **errp) | |
57c9fafe AL |
644 | { |
645 | ObjectProperty *prop; | |
646 | ||
647 | QTAILQ_FOREACH(prop, &obj->properties, node) { | |
648 | if (strcmp(prop->name, name) == 0) { | |
649 | return prop; | |
650 | } | |
651 | } | |
652 | ||
89bfe000 | 653 | error_set(errp, QERR_PROPERTY_NOT_FOUND, "", name); |
57c9fafe AL |
654 | return NULL; |
655 | } | |
656 | ||
657 | void object_property_del(Object *obj, const char *name, Error **errp) | |
658 | { | |
89bfe000 | 659 | ObjectProperty *prop = object_property_find(obj, name, errp); |
0866aca1 | 660 | if (prop == NULL) { |
0866aca1 AL |
661 | return; |
662 | } | |
57c9fafe | 663 | |
0866aca1 AL |
664 | if (prop->release) { |
665 | prop->release(obj, name, prop->opaque); | |
666 | } | |
667 | ||
668 | QTAILQ_REMOVE(&obj->properties, prop, node); | |
57c9fafe AL |
669 | |
670 | g_free(prop->name); | |
671 | g_free(prop->type); | |
672 | g_free(prop); | |
673 | } | |
674 | ||
675 | void object_property_get(Object *obj, Visitor *v, const char *name, | |
676 | Error **errp) | |
677 | { | |
89bfe000 | 678 | ObjectProperty *prop = object_property_find(obj, name, errp); |
57c9fafe | 679 | if (prop == NULL) { |
57c9fafe AL |
680 | return; |
681 | } | |
682 | ||
683 | if (!prop->get) { | |
684 | error_set(errp, QERR_PERMISSION_DENIED); | |
685 | } else { | |
686 | prop->get(obj, v, prop->opaque, name, errp); | |
687 | } | |
688 | } | |
689 | ||
690 | void object_property_set(Object *obj, Visitor *v, const char *name, | |
691 | Error **errp) | |
692 | { | |
89bfe000 | 693 | ObjectProperty *prop = object_property_find(obj, name, errp); |
57c9fafe | 694 | if (prop == NULL) { |
57c9fafe AL |
695 | return; |
696 | } | |
697 | ||
698 | if (!prop->set) { | |
699 | error_set(errp, QERR_PERMISSION_DENIED); | |
700 | } else { | |
701 | prop->set(obj, v, prop->opaque, name, errp); | |
702 | } | |
703 | } | |
704 | ||
7b7b7d18 PB |
705 | void object_property_set_str(Object *obj, const char *value, |
706 | const char *name, Error **errp) | |
707 | { | |
708 | QString *qstr = qstring_from_str(value); | |
709 | object_property_set_qobject(obj, QOBJECT(qstr), name, errp); | |
710 | ||
711 | QDECREF(qstr); | |
712 | } | |
713 | ||
714 | char *object_property_get_str(Object *obj, const char *name, | |
715 | Error **errp) | |
716 | { | |
717 | QObject *ret = object_property_get_qobject(obj, name, errp); | |
718 | QString *qstring; | |
719 | char *retval; | |
720 | ||
721 | if (!ret) { | |
722 | return NULL; | |
723 | } | |
724 | qstring = qobject_to_qstring(ret); | |
725 | if (!qstring) { | |
726 | error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, "string"); | |
727 | retval = NULL; | |
728 | } else { | |
729 | retval = g_strdup(qstring_get_str(qstring)); | |
730 | } | |
731 | ||
732 | QDECREF(qstring); | |
733 | return retval; | |
734 | } | |
735 | ||
1d9c5a12 PB |
736 | void object_property_set_link(Object *obj, Object *value, |
737 | const char *name, Error **errp) | |
738 | { | |
739 | object_property_set_str(obj, object_get_canonical_path(value), | |
740 | name, errp); | |
741 | } | |
742 | ||
743 | Object *object_property_get_link(Object *obj, const char *name, | |
744 | Error **errp) | |
745 | { | |
746 | char *str = object_property_get_str(obj, name, errp); | |
747 | Object *target = NULL; | |
748 | ||
749 | if (str && *str) { | |
750 | target = object_resolve_path(str, NULL); | |
751 | if (!target) { | |
752 | error_set(errp, QERR_DEVICE_NOT_FOUND, str); | |
753 | } | |
754 | } | |
755 | ||
756 | g_free(str); | |
757 | return target; | |
758 | } | |
759 | ||
7b7b7d18 PB |
760 | void object_property_set_bool(Object *obj, bool value, |
761 | const char *name, Error **errp) | |
762 | { | |
763 | QBool *qbool = qbool_from_int(value); | |
764 | object_property_set_qobject(obj, QOBJECT(qbool), name, errp); | |
765 | ||
766 | QDECREF(qbool); | |
767 | } | |
768 | ||
769 | bool object_property_get_bool(Object *obj, const char *name, | |
770 | Error **errp) | |
771 | { | |
772 | QObject *ret = object_property_get_qobject(obj, name, errp); | |
773 | QBool *qbool; | |
774 | bool retval; | |
775 | ||
776 | if (!ret) { | |
777 | return false; | |
778 | } | |
779 | qbool = qobject_to_qbool(ret); | |
780 | if (!qbool) { | |
781 | error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, "boolean"); | |
782 | retval = false; | |
783 | } else { | |
784 | retval = qbool_get_int(qbool); | |
785 | } | |
786 | ||
787 | QDECREF(qbool); | |
788 | return retval; | |
789 | } | |
790 | ||
791 | void object_property_set_int(Object *obj, int64_t value, | |
792 | const char *name, Error **errp) | |
793 | { | |
794 | QInt *qint = qint_from_int(value); | |
795 | object_property_set_qobject(obj, QOBJECT(qint), name, errp); | |
796 | ||
797 | QDECREF(qint); | |
798 | } | |
799 | ||
800 | int64_t object_property_get_int(Object *obj, const char *name, | |
801 | Error **errp) | |
802 | { | |
803 | QObject *ret = object_property_get_qobject(obj, name, errp); | |
804 | QInt *qint; | |
805 | int64_t retval; | |
806 | ||
807 | if (!ret) { | |
808 | return -1; | |
809 | } | |
810 | qint = qobject_to_qint(ret); | |
811 | if (!qint) { | |
812 | error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, "int"); | |
813 | retval = -1; | |
814 | } else { | |
815 | retval = qint_get_int(qint); | |
816 | } | |
817 | ||
818 | QDECREF(qint); | |
819 | return retval; | |
b2cd7dee PB |
820 | } |
821 | ||
822 | void object_property_parse(Object *obj, const char *string, | |
823 | const char *name, Error **errp) | |
824 | { | |
825 | StringInputVisitor *mi; | |
826 | mi = string_input_visitor_new(string); | |
827 | object_property_set(obj, string_input_get_visitor(mi), name, errp); | |
828 | ||
829 | string_input_visitor_cleanup(mi); | |
830 | } | |
831 | ||
832 | char *object_property_print(Object *obj, const char *name, | |
833 | Error **errp) | |
834 | { | |
835 | StringOutputVisitor *mo; | |
836 | char *string; | |
837 | ||
838 | mo = string_output_visitor_new(); | |
8185bfc1 | 839 | object_property_get(obj, string_output_get_visitor(mo), name, errp); |
b2cd7dee PB |
840 | string = string_output_get_string(mo); |
841 | string_output_visitor_cleanup(mo); | |
842 | return string; | |
7b7b7d18 PB |
843 | } |
844 | ||
57c9fafe AL |
845 | const char *object_property_get_type(Object *obj, const char *name, Error **errp) |
846 | { | |
89bfe000 | 847 | ObjectProperty *prop = object_property_find(obj, name, errp); |
57c9fafe | 848 | if (prop == NULL) { |
57c9fafe AL |
849 | return NULL; |
850 | } | |
851 | ||
852 | return prop->type; | |
853 | } | |
854 | ||
855 | Object *object_get_root(void) | |
856 | { | |
8b45d447 | 857 | static Object *root; |
57c9fafe | 858 | |
8b45d447 AL |
859 | if (!root) { |
860 | root = object_new("container"); | |
57c9fafe AL |
861 | } |
862 | ||
8b45d447 | 863 | return root; |
57c9fafe AL |
864 | } |
865 | ||
866 | static void object_get_child_property(Object *obj, Visitor *v, void *opaque, | |
867 | const char *name, Error **errp) | |
868 | { | |
869 | Object *child = opaque; | |
870 | gchar *path; | |
871 | ||
872 | path = object_get_canonical_path(child); | |
873 | visit_type_str(v, &path, name, errp); | |
874 | g_free(path); | |
875 | } | |
876 | ||
db85b575 AL |
877 | static void object_finalize_child_property(Object *obj, const char *name, |
878 | void *opaque) | |
879 | { | |
880 | Object *child = opaque; | |
881 | ||
882 | object_unref(child); | |
883 | } | |
884 | ||
57c9fafe AL |
885 | void object_property_add_child(Object *obj, const char *name, |
886 | Object *child, Error **errp) | |
887 | { | |
888 | gchar *type; | |
889 | ||
890 | type = g_strdup_printf("child<%s>", object_get_typename(OBJECT(child))); | |
891 | ||
892 | object_property_add(obj, name, type, object_get_child_property, | |
db85b575 | 893 | NULL, object_finalize_child_property, child, errp); |
57c9fafe AL |
894 | |
895 | object_ref(child); | |
896 | g_assert(child->parent == NULL); | |
897 | child->parent = obj; | |
898 | ||
899 | g_free(type); | |
900 | } | |
901 | ||
902 | static void object_get_link_property(Object *obj, Visitor *v, void *opaque, | |
903 | const char *name, Error **errp) | |
904 | { | |
905 | Object **child = opaque; | |
906 | gchar *path; | |
907 | ||
908 | if (*child) { | |
909 | path = object_get_canonical_path(*child); | |
910 | visit_type_str(v, &path, name, errp); | |
911 | g_free(path); | |
912 | } else { | |
913 | path = (gchar *)""; | |
914 | visit_type_str(v, &path, name, errp); | |
915 | } | |
916 | } | |
917 | ||
918 | static void object_set_link_property(Object *obj, Visitor *v, void *opaque, | |
919 | const char *name, Error **errp) | |
920 | { | |
921 | Object **child = opaque; | |
f0cdc966 | 922 | Object *old_target; |
57c9fafe AL |
923 | bool ambiguous = false; |
924 | const char *type; | |
925 | char *path; | |
11e35bfd | 926 | gchar *target_type; |
57c9fafe AL |
927 | |
928 | type = object_property_get_type(obj, name, NULL); | |
929 | ||
930 | visit_type_str(v, &path, name, errp); | |
931 | ||
f0cdc966 AB |
932 | old_target = *child; |
933 | *child = NULL; | |
57c9fafe AL |
934 | |
935 | if (strcmp(path, "") != 0) { | |
936 | Object *target; | |
937 | ||
11e35bfd PB |
938 | /* Go from link<FOO> to FOO. */ |
939 | target_type = g_strndup(&type[5], strlen(type) - 6); | |
940 | target = object_resolve_path_type(path, target_type, &ambiguous); | |
57c9fafe | 941 | |
11e35bfd PB |
942 | if (ambiguous) { |
943 | error_set(errp, QERR_AMBIGUOUS_PATH, path); | |
944 | } else if (target) { | |
945 | object_ref(target); | |
946 | *child = target; | |
57c9fafe | 947 | } else { |
11e35bfd PB |
948 | target = object_resolve_path(path, &ambiguous); |
949 | if (target || ambiguous) { | |
950 | error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, target_type); | |
951 | } else { | |
952 | error_set(errp, QERR_DEVICE_NOT_FOUND, path); | |
953 | } | |
57c9fafe | 954 | } |
11e35bfd | 955 | g_free(target_type); |
57c9fafe AL |
956 | } |
957 | ||
958 | g_free(path); | |
f0cdc966 AB |
959 | |
960 | if (old_target != NULL) { | |
961 | object_unref(old_target); | |
962 | } | |
57c9fafe AL |
963 | } |
964 | ||
965 | void object_property_add_link(Object *obj, const char *name, | |
966 | const char *type, Object **child, | |
967 | Error **errp) | |
968 | { | |
969 | gchar *full_type; | |
970 | ||
971 | full_type = g_strdup_printf("link<%s>", type); | |
972 | ||
973 | object_property_add(obj, name, full_type, | |
974 | object_get_link_property, | |
975 | object_set_link_property, | |
976 | NULL, child, errp); | |
977 | ||
978 | g_free(full_type); | |
979 | } | |
980 | ||
981 | gchar *object_get_canonical_path(Object *obj) | |
982 | { | |
983 | Object *root = object_get_root(); | |
984 | char *newpath = NULL, *path = NULL; | |
985 | ||
986 | while (obj != root) { | |
987 | ObjectProperty *prop = NULL; | |
988 | ||
989 | g_assert(obj->parent != NULL); | |
990 | ||
991 | QTAILQ_FOREACH(prop, &obj->parent->properties, node) { | |
5d9d3f47 | 992 | if (!object_property_is_child(prop)) { |
57c9fafe AL |
993 | continue; |
994 | } | |
995 | ||
996 | if (prop->opaque == obj) { | |
997 | if (path) { | |
998 | newpath = g_strdup_printf("%s/%s", prop->name, path); | |
999 | g_free(path); | |
1000 | path = newpath; | |
1001 | } else { | |
1002 | path = g_strdup(prop->name); | |
1003 | } | |
1004 | break; | |
1005 | } | |
1006 | } | |
1007 | ||
1008 | g_assert(prop != NULL); | |
1009 | ||
1010 | obj = obj->parent; | |
1011 | } | |
1012 | ||
1013 | newpath = g_strdup_printf("/%s", path); | |
1014 | g_free(path); | |
1015 | ||
1016 | return newpath; | |
1017 | } | |
1018 | ||
a612b2a6 PB |
1019 | Object *object_resolve_path_component(Object *parent, gchar *part) |
1020 | { | |
89bfe000 | 1021 | ObjectProperty *prop = object_property_find(parent, part, NULL); |
a612b2a6 PB |
1022 | if (prop == NULL) { |
1023 | return NULL; | |
1024 | } | |
1025 | ||
5d9d3f47 | 1026 | if (object_property_is_link(prop)) { |
a612b2a6 | 1027 | return *(Object **)prop->opaque; |
5d9d3f47 | 1028 | } else if (object_property_is_child(prop)) { |
a612b2a6 PB |
1029 | return prop->opaque; |
1030 | } else { | |
1031 | return NULL; | |
1032 | } | |
1033 | } | |
1034 | ||
57c9fafe AL |
1035 | static Object *object_resolve_abs_path(Object *parent, |
1036 | gchar **parts, | |
02fe2db6 | 1037 | const char *typename, |
57c9fafe AL |
1038 | int index) |
1039 | { | |
57c9fafe AL |
1040 | Object *child; |
1041 | ||
1042 | if (parts[index] == NULL) { | |
02fe2db6 | 1043 | return object_dynamic_cast(parent, typename); |
57c9fafe AL |
1044 | } |
1045 | ||
1046 | if (strcmp(parts[index], "") == 0) { | |
02fe2db6 | 1047 | return object_resolve_abs_path(parent, parts, typename, index + 1); |
57c9fafe AL |
1048 | } |
1049 | ||
a612b2a6 | 1050 | child = object_resolve_path_component(parent, parts[index]); |
57c9fafe AL |
1051 | if (!child) { |
1052 | return NULL; | |
1053 | } | |
1054 | ||
02fe2db6 | 1055 | return object_resolve_abs_path(child, parts, typename, index + 1); |
57c9fafe AL |
1056 | } |
1057 | ||
1058 | static Object *object_resolve_partial_path(Object *parent, | |
1059 | gchar **parts, | |
02fe2db6 | 1060 | const char *typename, |
57c9fafe AL |
1061 | bool *ambiguous) |
1062 | { | |
1063 | Object *obj; | |
1064 | ObjectProperty *prop; | |
1065 | ||
02fe2db6 | 1066 | obj = object_resolve_abs_path(parent, parts, typename, 0); |
57c9fafe AL |
1067 | |
1068 | QTAILQ_FOREACH(prop, &parent->properties, node) { | |
1069 | Object *found; | |
1070 | ||
5d9d3f47 | 1071 | if (!object_property_is_child(prop)) { |
57c9fafe AL |
1072 | continue; |
1073 | } | |
1074 | ||
02fe2db6 PB |
1075 | found = object_resolve_partial_path(prop->opaque, parts, |
1076 | typename, ambiguous); | |
57c9fafe AL |
1077 | if (found) { |
1078 | if (obj) { | |
1079 | if (ambiguous) { | |
1080 | *ambiguous = true; | |
1081 | } | |
1082 | return NULL; | |
1083 | } | |
1084 | obj = found; | |
1085 | } | |
1086 | ||
1087 | if (ambiguous && *ambiguous) { | |
1088 | return NULL; | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | return obj; | |
1093 | } | |
1094 | ||
02fe2db6 PB |
1095 | Object *object_resolve_path_type(const char *path, const char *typename, |
1096 | bool *ambiguous) | |
57c9fafe AL |
1097 | { |
1098 | bool partial_path = true; | |
1099 | Object *obj; | |
1100 | gchar **parts; | |
1101 | ||
1102 | parts = g_strsplit(path, "/", 0); | |
1103 | if (parts == NULL || parts[0] == NULL) { | |
1104 | g_strfreev(parts); | |
1105 | return object_get_root(); | |
1106 | } | |
1107 | ||
1108 | if (strcmp(parts[0], "") == 0) { | |
1109 | partial_path = false; | |
1110 | } | |
1111 | ||
1112 | if (partial_path) { | |
1113 | if (ambiguous) { | |
1114 | *ambiguous = false; | |
1115 | } | |
02fe2db6 PB |
1116 | obj = object_resolve_partial_path(object_get_root(), parts, |
1117 | typename, ambiguous); | |
57c9fafe | 1118 | } else { |
02fe2db6 | 1119 | obj = object_resolve_abs_path(object_get_root(), parts, typename, 1); |
57c9fafe AL |
1120 | } |
1121 | ||
1122 | g_strfreev(parts); | |
1123 | ||
1124 | return obj; | |
1125 | } | |
1126 | ||
02fe2db6 PB |
1127 | Object *object_resolve_path(const char *path, bool *ambiguous) |
1128 | { | |
1129 | return object_resolve_path_type(path, TYPE_OBJECT, ambiguous); | |
1130 | } | |
1131 | ||
57c9fafe AL |
1132 | typedef struct StringProperty |
1133 | { | |
1134 | char *(*get)(Object *, Error **); | |
1135 | void (*set)(Object *, const char *, Error **); | |
1136 | } StringProperty; | |
1137 | ||
7b7b7d18 PB |
1138 | static void property_get_str(Object *obj, Visitor *v, void *opaque, |
1139 | const char *name, Error **errp) | |
57c9fafe AL |
1140 | { |
1141 | StringProperty *prop = opaque; | |
1142 | char *value; | |
1143 | ||
1144 | value = prop->get(obj, errp); | |
1145 | if (value) { | |
1146 | visit_type_str(v, &value, name, errp); | |
1147 | g_free(value); | |
1148 | } | |
1149 | } | |
1150 | ||
7b7b7d18 PB |
1151 | static void property_set_str(Object *obj, Visitor *v, void *opaque, |
1152 | const char *name, Error **errp) | |
57c9fafe AL |
1153 | { |
1154 | StringProperty *prop = opaque; | |
1155 | char *value; | |
1156 | Error *local_err = NULL; | |
1157 | ||
1158 | visit_type_str(v, &value, name, &local_err); | |
1159 | if (local_err) { | |
1160 | error_propagate(errp, local_err); | |
1161 | return; | |
1162 | } | |
1163 | ||
1164 | prop->set(obj, value, errp); | |
1165 | g_free(value); | |
1166 | } | |
1167 | ||
7b7b7d18 PB |
1168 | static void property_release_str(Object *obj, const char *name, |
1169 | void *opaque) | |
57c9fafe AL |
1170 | { |
1171 | StringProperty *prop = opaque; | |
1172 | g_free(prop); | |
1173 | } | |
1174 | ||
1175 | void object_property_add_str(Object *obj, const char *name, | |
1176 | char *(*get)(Object *, Error **), | |
1177 | void (*set)(Object *, const char *, Error **), | |
1178 | Error **errp) | |
1179 | { | |
1180 | StringProperty *prop = g_malloc0(sizeof(*prop)); | |
1181 | ||
1182 | prop->get = get; | |
1183 | prop->set = set; | |
1184 | ||
1185 | object_property_add(obj, name, "string", | |
7b7b7d18 PB |
1186 | get ? property_get_str : NULL, |
1187 | set ? property_set_str : NULL, | |
1188 | property_release_str, | |
57c9fafe AL |
1189 | prop, errp); |
1190 | } | |
745549c8 | 1191 | |
0e558843 AL |
1192 | typedef struct BoolProperty |
1193 | { | |
1194 | bool (*get)(Object *, Error **); | |
1195 | void (*set)(Object *, bool, Error **); | |
1196 | } BoolProperty; | |
1197 | ||
1198 | static void property_get_bool(Object *obj, Visitor *v, void *opaque, | |
1199 | const char *name, Error **errp) | |
1200 | { | |
1201 | BoolProperty *prop = opaque; | |
1202 | bool value; | |
1203 | ||
1204 | value = prop->get(obj, errp); | |
1205 | visit_type_bool(v, &value, name, errp); | |
1206 | } | |
1207 | ||
1208 | static void property_set_bool(Object *obj, Visitor *v, void *opaque, | |
1209 | const char *name, Error **errp) | |
1210 | { | |
1211 | BoolProperty *prop = opaque; | |
1212 | bool value; | |
1213 | Error *local_err = NULL; | |
1214 | ||
1215 | visit_type_bool(v, &value, name, &local_err); | |
1216 | if (local_err) { | |
1217 | error_propagate(errp, local_err); | |
1218 | return; | |
1219 | } | |
1220 | ||
1221 | prop->set(obj, value, errp); | |
1222 | } | |
1223 | ||
1224 | static void property_release_bool(Object *obj, const char *name, | |
1225 | void *opaque) | |
1226 | { | |
1227 | BoolProperty *prop = opaque; | |
1228 | g_free(prop); | |
1229 | } | |
1230 | ||
1231 | void object_property_add_bool(Object *obj, const char *name, | |
1232 | bool (*get)(Object *, Error **), | |
1233 | void (*set)(Object *, bool, Error **), | |
1234 | Error **errp) | |
1235 | { | |
1236 | BoolProperty *prop = g_malloc0(sizeof(*prop)); | |
1237 | ||
1238 | prop->get = get; | |
1239 | prop->set = set; | |
1240 | ||
1241 | object_property_add(obj, name, "bool", | |
1242 | get ? property_get_bool : NULL, | |
1243 | set ? property_set_bool : NULL, | |
1244 | property_release_bool, | |
1245 | prop, errp); | |
1246 | } | |
1247 | ||
2f262e06 PB |
1248 | static char *qdev_get_type(Object *obj, Error **errp) |
1249 | { | |
1250 | return g_strdup(object_get_typename(obj)); | |
1251 | } | |
1252 | ||
1253 | static void object_instance_init(Object *obj) | |
1254 | { | |
1255 | object_property_add_str(obj, "type", qdev_get_type, NULL, NULL); | |
1256 | } | |
1257 | ||
745549c8 PB |
1258 | static void register_types(void) |
1259 | { | |
1260 | static TypeInfo interface_info = { | |
1261 | .name = TYPE_INTERFACE, | |
33e95c63 | 1262 | .class_size = sizeof(InterfaceClass), |
745549c8 PB |
1263 | .abstract = true, |
1264 | }; | |
1265 | ||
1266 | static TypeInfo object_info = { | |
1267 | .name = TYPE_OBJECT, | |
1268 | .instance_size = sizeof(Object), | |
2f262e06 | 1269 | .instance_init = object_instance_init, |
745549c8 PB |
1270 | .abstract = true, |
1271 | }; | |
1272 | ||
049cb3cf PB |
1273 | type_interface = type_register_internal(&interface_info); |
1274 | type_register_internal(&object_info); | |
745549c8 PB |
1275 | } |
1276 | ||
1277 | type_init(register_types) |