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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/osdep.h" | |
14 | #include "qom/object.h" | |
15 | #include "qom/object_interfaces.h" | |
16 | #include "qemu-common.h" | |
17 | #include "qapi/visitor.h" | |
18 | #include "qapi-visit.h" | |
19 | #include "qapi/string-input-visitor.h" | |
20 | #include "qapi/string-output-visitor.h" | |
21 | #include "qapi/qmp/qerror.h" | |
22 | #include "trace.h" | |
23 | ||
24 | /* TODO: replace QObject with a simpler visitor to avoid a dependency | |
25 | * of the QOM core on QObject? */ | |
26 | #include "qom/qom-qobject.h" | |
27 | #include "qapi/qmp/qobject.h" | |
28 | #include "qapi/qmp/qbool.h" | |
29 | #include "qapi/qmp/qint.h" | |
30 | #include "qapi/qmp/qstring.h" | |
31 | ||
32 | #define MAX_INTERFACES 32 | |
33 | ||
34 | typedef struct InterfaceImpl InterfaceImpl; | |
35 | typedef struct TypeImpl TypeImpl; | |
36 | ||
37 | struct InterfaceImpl | |
38 | { | |
39 | const char *typename; | |
40 | }; | |
41 | ||
42 | struct TypeImpl | |
43 | { | |
44 | const char *name; | |
45 | ||
46 | size_t class_size; | |
47 | ||
48 | size_t instance_size; | |
49 | ||
50 | void (*class_init)(ObjectClass *klass, void *data); | |
51 | void (*class_base_init)(ObjectClass *klass, void *data); | |
52 | void (*class_finalize)(ObjectClass *klass, void *data); | |
53 | ||
54 | void *class_data; | |
55 | ||
56 | void (*instance_init)(Object *obj); | |
57 | void (*instance_post_init)(Object *obj); | |
58 | void (*instance_finalize)(Object *obj); | |
59 | ||
60 | bool abstract; | |
61 | ||
62 | const char *parent; | |
63 | TypeImpl *parent_type; | |
64 | ||
65 | ObjectClass *class; | |
66 | ||
67 | int num_interfaces; | |
68 | InterfaceImpl interfaces[MAX_INTERFACES]; | |
69 | }; | |
70 | ||
71 | static Type type_interface; | |
72 | ||
73 | static GHashTable *type_table_get(void) | |
74 | { | |
75 | static GHashTable *type_table; | |
76 | ||
77 | if (type_table == NULL) { | |
78 | type_table = g_hash_table_new(g_str_hash, g_str_equal); | |
79 | } | |
80 | ||
81 | return type_table; | |
82 | } | |
83 | ||
84 | static bool enumerating_types; | |
85 | ||
86 | static void type_table_add(TypeImpl *ti) | |
87 | { | |
88 | assert(!enumerating_types); | |
89 | g_hash_table_insert(type_table_get(), (void *)ti->name, ti); | |
90 | } | |
91 | ||
92 | static TypeImpl *type_table_lookup(const char *name) | |
93 | { | |
94 | return g_hash_table_lookup(type_table_get(), name); | |
95 | } | |
96 | ||
97 | static TypeImpl *type_new(const TypeInfo *info) | |
98 | { | |
99 | TypeImpl *ti = g_malloc0(sizeof(*ti)); | |
100 | int i; | |
101 | ||
102 | g_assert(info->name != NULL); | |
103 | ||
104 | if (type_table_lookup(info->name) != NULL) { | |
105 | fprintf(stderr, "Registering `%s' which already exists\n", info->name); | |
106 | abort(); | |
107 | } | |
108 | ||
109 | ti->name = g_strdup(info->name); | |
110 | ti->parent = g_strdup(info->parent); | |
111 | ||
112 | ti->class_size = info->class_size; | |
113 | ti->instance_size = info->instance_size; | |
114 | ||
115 | ti->class_init = info->class_init; | |
116 | ti->class_base_init = info->class_base_init; | |
117 | ti->class_finalize = info->class_finalize; | |
118 | ti->class_data = info->class_data; | |
119 | ||
120 | ti->instance_init = info->instance_init; | |
121 | ti->instance_post_init = info->instance_post_init; | |
122 | ti->instance_finalize = info->instance_finalize; | |
123 | ||
124 | ti->abstract = info->abstract; | |
125 | ||
126 | for (i = 0; info->interfaces && info->interfaces[i].type; i++) { | |
127 | ti->interfaces[i].typename = g_strdup(info->interfaces[i].type); | |
128 | } | |
129 | ti->num_interfaces = i; | |
130 | ||
131 | return ti; | |
132 | } | |
133 | ||
134 | static TypeImpl *type_register_internal(const TypeInfo *info) | |
135 | { | |
136 | TypeImpl *ti; | |
137 | ti = type_new(info); | |
138 | ||
139 | type_table_add(ti); | |
140 | return ti; | |
141 | } | |
142 | ||
143 | TypeImpl *type_register(const TypeInfo *info) | |
144 | { | |
145 | assert(info->parent); | |
146 | return type_register_internal(info); | |
147 | } | |
148 | ||
149 | TypeImpl *type_register_static(const TypeInfo *info) | |
150 | { | |
151 | return type_register(info); | |
152 | } | |
153 | ||
154 | static TypeImpl *type_get_by_name(const char *name) | |
155 | { | |
156 | if (name == NULL) { | |
157 | return NULL; | |
158 | } | |
159 | ||
160 | return type_table_lookup(name); | |
161 | } | |
162 | ||
163 | static TypeImpl *type_get_parent(TypeImpl *type) | |
164 | { | |
165 | if (!type->parent_type && type->parent) { | |
166 | type->parent_type = type_get_by_name(type->parent); | |
167 | g_assert(type->parent_type != NULL); | |
168 | } | |
169 | ||
170 | return type->parent_type; | |
171 | } | |
172 | ||
173 | static bool type_has_parent(TypeImpl *type) | |
174 | { | |
175 | return (type->parent != NULL); | |
176 | } | |
177 | ||
178 | static size_t type_class_get_size(TypeImpl *ti) | |
179 | { | |
180 | if (ti->class_size) { | |
181 | return ti->class_size; | |
182 | } | |
183 | ||
184 | if (type_has_parent(ti)) { | |
185 | return type_class_get_size(type_get_parent(ti)); | |
186 | } | |
187 | ||
188 | return sizeof(ObjectClass); | |
189 | } | |
190 | ||
191 | static size_t type_object_get_size(TypeImpl *ti) | |
192 | { | |
193 | if (ti->instance_size) { | |
194 | return ti->instance_size; | |
195 | } | |
196 | ||
197 | if (type_has_parent(ti)) { | |
198 | return type_object_get_size(type_get_parent(ti)); | |
199 | } | |
200 | ||
201 | return 0; | |
202 | } | |
203 | ||
204 | static bool type_is_ancestor(TypeImpl *type, TypeImpl *target_type) | |
205 | { | |
206 | assert(target_type); | |
207 | ||
208 | /* Check if target_type is a direct ancestor of type */ | |
209 | while (type) { | |
210 | if (type == target_type) { | |
211 | return true; | |
212 | } | |
213 | ||
214 | type = type_get_parent(type); | |
215 | } | |
216 | ||
217 | return false; | |
218 | } | |
219 | ||
220 | static void type_initialize(TypeImpl *ti); | |
221 | ||
222 | static void type_initialize_interface(TypeImpl *ti, TypeImpl *interface_type, | |
223 | TypeImpl *parent_type) | |
224 | { | |
225 | InterfaceClass *new_iface; | |
226 | TypeInfo info = { }; | |
227 | TypeImpl *iface_impl; | |
228 | ||
229 | info.parent = parent_type->name; | |
230 | info.name = g_strdup_printf("%s::%s", ti->name, interface_type->name); | |
231 | info.abstract = true; | |
232 | ||
233 | iface_impl = type_new(&info); | |
234 | iface_impl->parent_type = parent_type; | |
235 | type_initialize(iface_impl); | |
236 | g_free((char *)info.name); | |
237 | ||
238 | new_iface = (InterfaceClass *)iface_impl->class; | |
239 | new_iface->concrete_class = ti->class; | |
240 | new_iface->interface_type = interface_type; | |
241 | ||
242 | ti->class->interfaces = g_slist_append(ti->class->interfaces, | |
243 | iface_impl->class); | |
244 | } | |
245 | ||
246 | static void object_property_free(gpointer data) | |
247 | { | |
248 | ObjectProperty *prop = data; | |
249 | ||
250 | g_free(prop->name); | |
251 | g_free(prop->type); | |
252 | g_free(prop->description); | |
253 | g_free(prop); | |
254 | } | |
255 | ||
256 | static void type_initialize(TypeImpl *ti) | |
257 | { | |
258 | TypeImpl *parent; | |
259 | ||
260 | if (ti->class) { | |
261 | return; | |
262 | } | |
263 | ||
264 | ti->class_size = type_class_get_size(ti); | |
265 | ti->instance_size = type_object_get_size(ti); | |
266 | ||
267 | ti->class = g_malloc0(ti->class_size); | |
268 | ||
269 | parent = type_get_parent(ti); | |
270 | if (parent) { | |
271 | type_initialize(parent); | |
272 | GSList *e; | |
273 | int i; | |
274 | ||
275 | g_assert_cmpint(parent->class_size, <=, ti->class_size); | |
276 | memcpy(ti->class, parent->class, parent->class_size); | |
277 | ti->class->interfaces = NULL; | |
278 | ti->class->properties = g_hash_table_new_full( | |
279 | g_str_hash, g_str_equal, g_free, object_property_free); | |
280 | ||
281 | for (e = parent->class->interfaces; e; e = e->next) { | |
282 | InterfaceClass *iface = e->data; | |
283 | ObjectClass *klass = OBJECT_CLASS(iface); | |
284 | ||
285 | type_initialize_interface(ti, iface->interface_type, klass->type); | |
286 | } | |
287 | ||
288 | for (i = 0; i < ti->num_interfaces; i++) { | |
289 | TypeImpl *t = type_get_by_name(ti->interfaces[i].typename); | |
290 | for (e = ti->class->interfaces; e; e = e->next) { | |
291 | TypeImpl *target_type = OBJECT_CLASS(e->data)->type; | |
292 | ||
293 | if (type_is_ancestor(target_type, t)) { | |
294 | break; | |
295 | } | |
296 | } | |
297 | ||
298 | if (e) { | |
299 | continue; | |
300 | } | |
301 | ||
302 | type_initialize_interface(ti, t, t); | |
303 | } | |
304 | } else { | |
305 | ti->class->properties = g_hash_table_new_full( | |
306 | g_str_hash, g_str_equal, g_free, object_property_free); | |
307 | } | |
308 | ||
309 | ti->class->type = ti; | |
310 | ||
311 | while (parent) { | |
312 | if (parent->class_base_init) { | |
313 | parent->class_base_init(ti->class, ti->class_data); | |
314 | } | |
315 | parent = type_get_parent(parent); | |
316 | } | |
317 | ||
318 | if (ti->class_init) { | |
319 | ti->class_init(ti->class, ti->class_data); | |
320 | } | |
321 | } | |
322 | ||
323 | static void object_init_with_type(Object *obj, TypeImpl *ti) | |
324 | { | |
325 | if (type_has_parent(ti)) { | |
326 | object_init_with_type(obj, type_get_parent(ti)); | |
327 | } | |
328 | ||
329 | if (ti->instance_init) { | |
330 | ti->instance_init(obj); | |
331 | } | |
332 | } | |
333 | ||
334 | static void object_post_init_with_type(Object *obj, TypeImpl *ti) | |
335 | { | |
336 | if (ti->instance_post_init) { | |
337 | ti->instance_post_init(obj); | |
338 | } | |
339 | ||
340 | if (type_has_parent(ti)) { | |
341 | object_post_init_with_type(obj, type_get_parent(ti)); | |
342 | } | |
343 | } | |
344 | ||
345 | void object_initialize_with_type(void *data, size_t size, TypeImpl *type) | |
346 | { | |
347 | Object *obj = data; | |
348 | ||
349 | g_assert(type != NULL); | |
350 | type_initialize(type); | |
351 | ||
352 | g_assert_cmpint(type->instance_size, >=, sizeof(Object)); | |
353 | g_assert(type->abstract == false); | |
354 | g_assert_cmpint(size, >=, type->instance_size); | |
355 | ||
356 | memset(obj, 0, type->instance_size); | |
357 | obj->class = type->class; | |
358 | object_ref(obj); | |
359 | obj->properties = g_hash_table_new_full(g_str_hash, g_str_equal, | |
360 | NULL, object_property_free); | |
361 | object_init_with_type(obj, type); | |
362 | object_post_init_with_type(obj, type); | |
363 | } | |
364 | ||
365 | void object_initialize(void *data, size_t size, const char *typename) | |
366 | { | |
367 | TypeImpl *type = type_get_by_name(typename); | |
368 | ||
369 | object_initialize_with_type(data, size, type); | |
370 | } | |
371 | ||
372 | static inline bool object_property_is_child(ObjectProperty *prop) | |
373 | { | |
374 | return strstart(prop->type, "child<", NULL); | |
375 | } | |
376 | ||
377 | static void object_property_del_all(Object *obj) | |
378 | { | |
379 | ObjectProperty *prop; | |
380 | GHashTableIter iter; | |
381 | gpointer key, value; | |
382 | bool released; | |
383 | ||
384 | do { | |
385 | released = false; | |
386 | g_hash_table_iter_init(&iter, obj->properties); | |
387 | while (g_hash_table_iter_next(&iter, &key, &value)) { | |
388 | prop = value; | |
389 | if (prop->release) { | |
390 | prop->release(obj, prop->name, prop->opaque); | |
391 | prop->release = NULL; | |
392 | released = true; | |
393 | break; | |
394 | } | |
395 | g_hash_table_iter_remove(&iter); | |
396 | } | |
397 | } while (released); | |
398 | ||
399 | g_hash_table_unref(obj->properties); | |
400 | } | |
401 | ||
402 | static void object_property_del_child(Object *obj, Object *child, Error **errp) | |
403 | { | |
404 | ObjectProperty *prop; | |
405 | GHashTableIter iter; | |
406 | gpointer key, value; | |
407 | ||
408 | g_hash_table_iter_init(&iter, obj->properties); | |
409 | while (g_hash_table_iter_next(&iter, &key, &value)) { | |
410 | prop = value; | |
411 | if (object_property_is_child(prop) && prop->opaque == child) { | |
412 | if (prop->release) { | |
413 | prop->release(obj, prop->name, prop->opaque); | |
414 | prop->release = NULL; | |
415 | } | |
416 | break; | |
417 | } | |
418 | } | |
419 | g_hash_table_iter_init(&iter, obj->properties); | |
420 | while (g_hash_table_iter_next(&iter, &key, &value)) { | |
421 | prop = value; | |
422 | if (object_property_is_child(prop) && prop->opaque == child) { | |
423 | g_hash_table_iter_remove(&iter); | |
424 | break; | |
425 | } | |
426 | } | |
427 | } | |
428 | ||
429 | void object_unparent(Object *obj) | |
430 | { | |
431 | if (obj->parent) { | |
432 | object_property_del_child(obj->parent, obj, NULL); | |
433 | } | |
434 | } | |
435 | ||
436 | static void object_deinit(Object *obj, TypeImpl *type) | |
437 | { | |
438 | if (type->instance_finalize) { | |
439 | type->instance_finalize(obj); | |
440 | } | |
441 | ||
442 | if (type_has_parent(type)) { | |
443 | object_deinit(obj, type_get_parent(type)); | |
444 | } | |
445 | } | |
446 | ||
447 | static void object_finalize(void *data) | |
448 | { | |
449 | Object *obj = data; | |
450 | TypeImpl *ti = obj->class->type; | |
451 | ||
452 | object_property_del_all(obj); | |
453 | object_deinit(obj, ti); | |
454 | ||
455 | g_assert_cmpint(obj->ref, ==, 0); | |
456 | if (obj->free) { | |
457 | obj->free(obj); | |
458 | } | |
459 | } | |
460 | ||
461 | Object *object_new_with_type(Type type) | |
462 | { | |
463 | Object *obj; | |
464 | ||
465 | g_assert(type != NULL); | |
466 | type_initialize(type); | |
467 | ||
468 | obj = g_malloc(type->instance_size); | |
469 | object_initialize_with_type(obj, type->instance_size, type); | |
470 | obj->free = g_free; | |
471 | ||
472 | return obj; | |
473 | } | |
474 | ||
475 | Object *object_new(const char *typename) | |
476 | { | |
477 | TypeImpl *ti = type_get_by_name(typename); | |
478 | ||
479 | return object_new_with_type(ti); | |
480 | } | |
481 | ||
482 | ||
483 | Object *object_new_with_props(const char *typename, | |
484 | Object *parent, | |
485 | const char *id, | |
486 | Error **errp, | |
487 | ...) | |
488 | { | |
489 | va_list vargs; | |
490 | Object *obj; | |
491 | ||
492 | va_start(vargs, errp); | |
493 | obj = object_new_with_propv(typename, parent, id, errp, vargs); | |
494 | va_end(vargs); | |
495 | ||
496 | return obj; | |
497 | } | |
498 | ||
499 | ||
500 | Object *object_new_with_propv(const char *typename, | |
501 | Object *parent, | |
502 | const char *id, | |
503 | Error **errp, | |
504 | va_list vargs) | |
505 | { | |
506 | Object *obj; | |
507 | ObjectClass *klass; | |
508 | Error *local_err = NULL; | |
509 | ||
510 | klass = object_class_by_name(typename); | |
511 | if (!klass) { | |
512 | error_setg(errp, "invalid object type: %s", typename); | |
513 | return NULL; | |
514 | } | |
515 | ||
516 | if (object_class_is_abstract(klass)) { | |
517 | error_setg(errp, "object type '%s' is abstract", typename); | |
518 | return NULL; | |
519 | } | |
520 | obj = object_new(typename); | |
521 | ||
522 | if (object_set_propv(obj, &local_err, vargs) < 0) { | |
523 | goto error; | |
524 | } | |
525 | ||
526 | object_property_add_child(parent, id, obj, &local_err); | |
527 | if (local_err) { | |
528 | goto error; | |
529 | } | |
530 | ||
531 | if (object_dynamic_cast(obj, TYPE_USER_CREATABLE)) { | |
532 | user_creatable_complete(obj, &local_err); | |
533 | if (local_err) { | |
534 | object_unparent(obj); | |
535 | goto error; | |
536 | } | |
537 | } | |
538 | ||
539 | object_unref(OBJECT(obj)); | |
540 | return obj; | |
541 | ||
542 | error: | |
543 | if (local_err) { | |
544 | error_propagate(errp, local_err); | |
545 | } | |
546 | object_unref(obj); | |
547 | return NULL; | |
548 | } | |
549 | ||
550 | ||
551 | int object_set_props(Object *obj, | |
552 | Error **errp, | |
553 | ...) | |
554 | { | |
555 | va_list vargs; | |
556 | int ret; | |
557 | ||
558 | va_start(vargs, errp); | |
559 | ret = object_set_propv(obj, errp, vargs); | |
560 | va_end(vargs); | |
561 | ||
562 | return ret; | |
563 | } | |
564 | ||
565 | ||
566 | int object_set_propv(Object *obj, | |
567 | Error **errp, | |
568 | va_list vargs) | |
569 | { | |
570 | const char *propname; | |
571 | Error *local_err = NULL; | |
572 | ||
573 | propname = va_arg(vargs, char *); | |
574 | while (propname != NULL) { | |
575 | const char *value = va_arg(vargs, char *); | |
576 | ||
577 | g_assert(value != NULL); | |
578 | object_property_parse(obj, value, propname, &local_err); | |
579 | if (local_err) { | |
580 | error_propagate(errp, local_err); | |
581 | return -1; | |
582 | } | |
583 | propname = va_arg(vargs, char *); | |
584 | } | |
585 | ||
586 | return 0; | |
587 | } | |
588 | ||
589 | ||
590 | Object *object_dynamic_cast(Object *obj, const char *typename) | |
591 | { | |
592 | if (obj && object_class_dynamic_cast(object_get_class(obj), typename)) { | |
593 | return obj; | |
594 | } | |
595 | ||
596 | return NULL; | |
597 | } | |
598 | ||
599 | Object *object_dynamic_cast_assert(Object *obj, const char *typename, | |
600 | const char *file, int line, const char *func) | |
601 | { | |
602 | trace_object_dynamic_cast_assert(obj ? obj->class->type->name : "(null)", | |
603 | typename, file, line, func); | |
604 | ||
605 | #ifdef CONFIG_QOM_CAST_DEBUG | |
606 | int i; | |
607 | Object *inst; | |
608 | ||
609 | for (i = 0; obj && i < OBJECT_CLASS_CAST_CACHE; i++) { | |
610 | if (obj->class->object_cast_cache[i] == typename) { | |
611 | goto out; | |
612 | } | |
613 | } | |
614 | ||
615 | inst = object_dynamic_cast(obj, typename); | |
616 | ||
617 | if (!inst && obj) { | |
618 | fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n", | |
619 | file, line, func, obj, typename); | |
620 | abort(); | |
621 | } | |
622 | ||
623 | assert(obj == inst); | |
624 | ||
625 | if (obj && obj == inst) { | |
626 | for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) { | |
627 | obj->class->object_cast_cache[i - 1] = | |
628 | obj->class->object_cast_cache[i]; | |
629 | } | |
630 | obj->class->object_cast_cache[i - 1] = typename; | |
631 | } | |
632 | ||
633 | out: | |
634 | #endif | |
635 | return obj; | |
636 | } | |
637 | ||
638 | ObjectClass *object_class_dynamic_cast(ObjectClass *class, | |
639 | const char *typename) | |
640 | { | |
641 | ObjectClass *ret = NULL; | |
642 | TypeImpl *target_type; | |
643 | TypeImpl *type; | |
644 | ||
645 | if (!class) { | |
646 | return NULL; | |
647 | } | |
648 | ||
649 | /* A simple fast path that can trigger a lot for leaf classes. */ | |
650 | type = class->type; | |
651 | if (type->name == typename) { | |
652 | return class; | |
653 | } | |
654 | ||
655 | target_type = type_get_by_name(typename); | |
656 | if (!target_type) { | |
657 | /* target class type unknown, so fail the cast */ | |
658 | return NULL; | |
659 | } | |
660 | ||
661 | if (type->class->interfaces && | |
662 | type_is_ancestor(target_type, type_interface)) { | |
663 | int found = 0; | |
664 | GSList *i; | |
665 | ||
666 | for (i = class->interfaces; i; i = i->next) { | |
667 | ObjectClass *target_class = i->data; | |
668 | ||
669 | if (type_is_ancestor(target_class->type, target_type)) { | |
670 | ret = target_class; | |
671 | found++; | |
672 | } | |
673 | } | |
674 | ||
675 | /* The match was ambiguous, don't allow a cast */ | |
676 | if (found > 1) { | |
677 | ret = NULL; | |
678 | } | |
679 | } else if (type_is_ancestor(type, target_type)) { | |
680 | ret = class; | |
681 | } | |
682 | ||
683 | return ret; | |
684 | } | |
685 | ||
686 | ObjectClass *object_class_dynamic_cast_assert(ObjectClass *class, | |
687 | const char *typename, | |
688 | const char *file, int line, | |
689 | const char *func) | |
690 | { | |
691 | ObjectClass *ret; | |
692 | ||
693 | trace_object_class_dynamic_cast_assert(class ? class->type->name : "(null)", | |
694 | typename, file, line, func); | |
695 | ||
696 | #ifdef CONFIG_QOM_CAST_DEBUG | |
697 | int i; | |
698 | ||
699 | for (i = 0; class && i < OBJECT_CLASS_CAST_CACHE; i++) { | |
700 | if (class->class_cast_cache[i] == typename) { | |
701 | ret = class; | |
702 | goto out; | |
703 | } | |
704 | } | |
705 | #else | |
706 | if (!class || !class->interfaces) { | |
707 | return class; | |
708 | } | |
709 | #endif | |
710 | ||
711 | ret = object_class_dynamic_cast(class, typename); | |
712 | if (!ret && class) { | |
713 | fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n", | |
714 | file, line, func, class, typename); | |
715 | abort(); | |
716 | } | |
717 | ||
718 | #ifdef CONFIG_QOM_CAST_DEBUG | |
719 | if (class && ret == class) { | |
720 | for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) { | |
721 | class->class_cast_cache[i - 1] = class->class_cast_cache[i]; | |
722 | } | |
723 | class->class_cast_cache[i - 1] = typename; | |
724 | } | |
725 | out: | |
726 | #endif | |
727 | return ret; | |
728 | } | |
729 | ||
730 | const char *object_get_typename(Object *obj) | |
731 | { | |
732 | return obj->class->type->name; | |
733 | } | |
734 | ||
735 | ObjectClass *object_get_class(Object *obj) | |
736 | { | |
737 | return obj->class; | |
738 | } | |
739 | ||
740 | bool object_class_is_abstract(ObjectClass *klass) | |
741 | { | |
742 | return klass->type->abstract; | |
743 | } | |
744 | ||
745 | const char *object_class_get_name(ObjectClass *klass) | |
746 | { | |
747 | return klass->type->name; | |
748 | } | |
749 | ||
750 | ObjectClass *object_class_by_name(const char *typename) | |
751 | { | |
752 | TypeImpl *type = type_get_by_name(typename); | |
753 | ||
754 | if (!type) { | |
755 | return NULL; | |
756 | } | |
757 | ||
758 | type_initialize(type); | |
759 | ||
760 | return type->class; | |
761 | } | |
762 | ||
763 | ObjectClass *object_class_get_parent(ObjectClass *class) | |
764 | { | |
765 | TypeImpl *type = type_get_parent(class->type); | |
766 | ||
767 | if (!type) { | |
768 | return NULL; | |
769 | } | |
770 | ||
771 | type_initialize(type); | |
772 | ||
773 | return type->class; | |
774 | } | |
775 | ||
776 | typedef struct OCFData | |
777 | { | |
778 | void (*fn)(ObjectClass *klass, void *opaque); | |
779 | const char *implements_type; | |
780 | bool include_abstract; | |
781 | void *opaque; | |
782 | } OCFData; | |
783 | ||
784 | static void object_class_foreach_tramp(gpointer key, gpointer value, | |
785 | gpointer opaque) | |
786 | { | |
787 | OCFData *data = opaque; | |
788 | TypeImpl *type = value; | |
789 | ObjectClass *k; | |
790 | ||
791 | type_initialize(type); | |
792 | k = type->class; | |
793 | ||
794 | if (!data->include_abstract && type->abstract) { | |
795 | return; | |
796 | } | |
797 | ||
798 | if (data->implements_type && | |
799 | !object_class_dynamic_cast(k, data->implements_type)) { | |
800 | return; | |
801 | } | |
802 | ||
803 | data->fn(k, data->opaque); | |
804 | } | |
805 | ||
806 | void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque), | |
807 | const char *implements_type, bool include_abstract, | |
808 | void *opaque) | |
809 | { | |
810 | OCFData data = { fn, implements_type, include_abstract, opaque }; | |
811 | ||
812 | enumerating_types = true; | |
813 | g_hash_table_foreach(type_table_get(), object_class_foreach_tramp, &data); | |
814 | enumerating_types = false; | |
815 | } | |
816 | ||
817 | static int do_object_child_foreach(Object *obj, | |
818 | int (*fn)(Object *child, void *opaque), | |
819 | void *opaque, bool recurse) | |
820 | { | |
821 | GHashTableIter iter; | |
822 | ObjectProperty *prop; | |
823 | int ret = 0; | |
824 | ||
825 | g_hash_table_iter_init(&iter, obj->properties); | |
826 | while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) { | |
827 | if (object_property_is_child(prop)) { | |
828 | Object *child = prop->opaque; | |
829 | ||
830 | ret = fn(child, opaque); | |
831 | if (ret != 0) { | |
832 | break; | |
833 | } | |
834 | if (recurse) { | |
835 | do_object_child_foreach(child, fn, opaque, true); | |
836 | } | |
837 | } | |
838 | } | |
839 | return ret; | |
840 | } | |
841 | ||
842 | int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque), | |
843 | void *opaque) | |
844 | { | |
845 | return do_object_child_foreach(obj, fn, opaque, false); | |
846 | } | |
847 | ||
848 | int object_child_foreach_recursive(Object *obj, | |
849 | int (*fn)(Object *child, void *opaque), | |
850 | void *opaque) | |
851 | { | |
852 | return do_object_child_foreach(obj, fn, opaque, true); | |
853 | } | |
854 | ||
855 | static void object_class_get_list_tramp(ObjectClass *klass, void *opaque) | |
856 | { | |
857 | GSList **list = opaque; | |
858 | ||
859 | *list = g_slist_prepend(*list, klass); | |
860 | } | |
861 | ||
862 | GSList *object_class_get_list(const char *implements_type, | |
863 | bool include_abstract) | |
864 | { | |
865 | GSList *list = NULL; | |
866 | ||
867 | object_class_foreach(object_class_get_list_tramp, | |
868 | implements_type, include_abstract, &list); | |
869 | return list; | |
870 | } | |
871 | ||
872 | void object_ref(Object *obj) | |
873 | { | |
874 | if (!obj) { | |
875 | return; | |
876 | } | |
877 | atomic_inc(&obj->ref); | |
878 | } | |
879 | ||
880 | void object_unref(Object *obj) | |
881 | { | |
882 | if (!obj) { | |
883 | return; | |
884 | } | |
885 | g_assert_cmpint(obj->ref, >, 0); | |
886 | ||
887 | /* parent always holds a reference to its children */ | |
888 | if (atomic_fetch_dec(&obj->ref) == 1) { | |
889 | object_finalize(obj); | |
890 | } | |
891 | } | |
892 | ||
893 | ObjectProperty * | |
894 | object_property_add(Object *obj, const char *name, const char *type, | |
895 | ObjectPropertyAccessor *get, | |
896 | ObjectPropertyAccessor *set, | |
897 | ObjectPropertyRelease *release, | |
898 | void *opaque, Error **errp) | |
899 | { | |
900 | ObjectProperty *prop; | |
901 | size_t name_len = strlen(name); | |
902 | ||
903 | if (name_len >= 3 && !memcmp(name + name_len - 3, "[*]", 4)) { | |
904 | int i; | |
905 | ObjectProperty *ret; | |
906 | char *name_no_array = g_strdup(name); | |
907 | ||
908 | name_no_array[name_len - 3] = '\0'; | |
909 | for (i = 0; ; ++i) { | |
910 | char *full_name = g_strdup_printf("%s[%d]", name_no_array, i); | |
911 | ||
912 | ret = object_property_add(obj, full_name, type, get, set, | |
913 | release, opaque, NULL); | |
914 | g_free(full_name); | |
915 | if (ret) { | |
916 | break; | |
917 | } | |
918 | } | |
919 | g_free(name_no_array); | |
920 | return ret; | |
921 | } | |
922 | ||
923 | if (object_property_find(obj, name, NULL) != NULL) { | |
924 | error_setg(errp, "attempt to add duplicate property '%s'" | |
925 | " to object (type '%s')", name, | |
926 | object_get_typename(obj)); | |
927 | return NULL; | |
928 | } | |
929 | ||
930 | prop = g_malloc0(sizeof(*prop)); | |
931 | ||
932 | prop->name = g_strdup(name); | |
933 | prop->type = g_strdup(type); | |
934 | ||
935 | prop->get = get; | |
936 | prop->set = set; | |
937 | prop->release = release; | |
938 | prop->opaque = opaque; | |
939 | ||
940 | g_hash_table_insert(obj->properties, prop->name, prop); | |
941 | return prop; | |
942 | } | |
943 | ||
944 | ObjectProperty * | |
945 | object_class_property_add(ObjectClass *klass, | |
946 | const char *name, | |
947 | const char *type, | |
948 | ObjectPropertyAccessor *get, | |
949 | ObjectPropertyAccessor *set, | |
950 | ObjectPropertyRelease *release, | |
951 | void *opaque, | |
952 | Error **errp) | |
953 | { | |
954 | ObjectProperty *prop; | |
955 | ||
956 | if (object_class_property_find(klass, name, NULL) != NULL) { | |
957 | error_setg(errp, "attempt to add duplicate property '%s'" | |
958 | " to object (type '%s')", name, | |
959 | object_class_get_name(klass)); | |
960 | return NULL; | |
961 | } | |
962 | ||
963 | prop = g_malloc0(sizeof(*prop)); | |
964 | ||
965 | prop->name = g_strdup(name); | |
966 | prop->type = g_strdup(type); | |
967 | ||
968 | prop->get = get; | |
969 | prop->set = set; | |
970 | prop->release = release; | |
971 | prop->opaque = opaque; | |
972 | ||
973 | g_hash_table_insert(klass->properties, g_strdup(name), prop); | |
974 | ||
975 | return prop; | |
976 | } | |
977 | ||
978 | ObjectProperty *object_property_find(Object *obj, const char *name, | |
979 | Error **errp) | |
980 | { | |
981 | ObjectProperty *prop; | |
982 | ObjectClass *klass = object_get_class(obj); | |
983 | ||
984 | prop = object_class_property_find(klass, name, NULL); | |
985 | if (prop) { | |
986 | return prop; | |
987 | } | |
988 | ||
989 | prop = g_hash_table_lookup(obj->properties, name); | |
990 | if (prop) { | |
991 | return prop; | |
992 | } | |
993 | ||
994 | error_setg(errp, "Property '.%s' not found", name); | |
995 | return NULL; | |
996 | } | |
997 | ||
998 | void object_property_iter_init(ObjectPropertyIterator *iter, | |
999 | Object *obj) | |
1000 | { | |
1001 | g_hash_table_iter_init(&iter->iter, obj->properties); | |
1002 | iter->nextclass = object_get_class(obj); | |
1003 | } | |
1004 | ||
1005 | ObjectProperty *object_property_iter_next(ObjectPropertyIterator *iter) | |
1006 | { | |
1007 | gpointer key, val; | |
1008 | while (!g_hash_table_iter_next(&iter->iter, &key, &val)) { | |
1009 | if (!iter->nextclass) { | |
1010 | return NULL; | |
1011 | } | |
1012 | g_hash_table_iter_init(&iter->iter, iter->nextclass->properties); | |
1013 | iter->nextclass = object_class_get_parent(iter->nextclass); | |
1014 | } | |
1015 | return val; | |
1016 | } | |
1017 | ||
1018 | ObjectProperty *object_class_property_find(ObjectClass *klass, const char *name, | |
1019 | Error **errp) | |
1020 | { | |
1021 | ObjectProperty *prop; | |
1022 | ObjectClass *parent_klass; | |
1023 | ||
1024 | parent_klass = object_class_get_parent(klass); | |
1025 | if (parent_klass) { | |
1026 | prop = object_class_property_find(parent_klass, name, NULL); | |
1027 | if (prop) { | |
1028 | return prop; | |
1029 | } | |
1030 | } | |
1031 | ||
1032 | prop = g_hash_table_lookup(klass->properties, name); | |
1033 | if (!prop) { | |
1034 | error_setg(errp, "Property '.%s' not found", name); | |
1035 | } | |
1036 | return prop; | |
1037 | } | |
1038 | ||
1039 | void object_property_del(Object *obj, const char *name, Error **errp) | |
1040 | { | |
1041 | ObjectProperty *prop = g_hash_table_lookup(obj->properties, name); | |
1042 | ||
1043 | if (!prop) { | |
1044 | error_setg(errp, "Property '.%s' not found", name); | |
1045 | return; | |
1046 | } | |
1047 | ||
1048 | if (prop->release) { | |
1049 | prop->release(obj, name, prop->opaque); | |
1050 | } | |
1051 | g_hash_table_remove(obj->properties, name); | |
1052 | } | |
1053 | ||
1054 | void object_property_get(Object *obj, Visitor *v, const char *name, | |
1055 | Error **errp) | |
1056 | { | |
1057 | ObjectProperty *prop = object_property_find(obj, name, errp); | |
1058 | if (prop == NULL) { | |
1059 | return; | |
1060 | } | |
1061 | ||
1062 | if (!prop->get) { | |
1063 | error_setg(errp, QERR_PERMISSION_DENIED); | |
1064 | } else { | |
1065 | prop->get(obj, v, name, prop->opaque, errp); | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | void object_property_set(Object *obj, Visitor *v, const char *name, | |
1070 | Error **errp) | |
1071 | { | |
1072 | ObjectProperty *prop = object_property_find(obj, name, errp); | |
1073 | if (prop == NULL) { | |
1074 | return; | |
1075 | } | |
1076 | ||
1077 | if (!prop->set) { | |
1078 | error_setg(errp, QERR_PERMISSION_DENIED); | |
1079 | } else { | |
1080 | prop->set(obj, v, name, prop->opaque, errp); | |
1081 | } | |
1082 | } | |
1083 | ||
1084 | void object_property_set_str(Object *obj, const char *value, | |
1085 | const char *name, Error **errp) | |
1086 | { | |
1087 | QString *qstr = qstring_from_str(value); | |
1088 | object_property_set_qobject(obj, QOBJECT(qstr), name, errp); | |
1089 | ||
1090 | QDECREF(qstr); | |
1091 | } | |
1092 | ||
1093 | char *object_property_get_str(Object *obj, const char *name, | |
1094 | Error **errp) | |
1095 | { | |
1096 | QObject *ret = object_property_get_qobject(obj, name, errp); | |
1097 | QString *qstring; | |
1098 | char *retval; | |
1099 | ||
1100 | if (!ret) { | |
1101 | return NULL; | |
1102 | } | |
1103 | qstring = qobject_to_qstring(ret); | |
1104 | if (!qstring) { | |
1105 | error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "string"); | |
1106 | retval = NULL; | |
1107 | } else { | |
1108 | retval = g_strdup(qstring_get_str(qstring)); | |
1109 | } | |
1110 | ||
1111 | QDECREF(qstring); | |
1112 | return retval; | |
1113 | } | |
1114 | ||
1115 | void object_property_set_link(Object *obj, Object *value, | |
1116 | const char *name, Error **errp) | |
1117 | { | |
1118 | if (value) { | |
1119 | gchar *path = object_get_canonical_path(value); | |
1120 | object_property_set_str(obj, path, name, errp); | |
1121 | g_free(path); | |
1122 | } else { | |
1123 | object_property_set_str(obj, "", name, errp); | |
1124 | } | |
1125 | } | |
1126 | ||
1127 | Object *object_property_get_link(Object *obj, const char *name, | |
1128 | Error **errp) | |
1129 | { | |
1130 | char *str = object_property_get_str(obj, name, errp); | |
1131 | Object *target = NULL; | |
1132 | ||
1133 | if (str && *str) { | |
1134 | target = object_resolve_path(str, NULL); | |
1135 | if (!target) { | |
1136 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
1137 | "Device '%s' not found", str); | |
1138 | } | |
1139 | } | |
1140 | ||
1141 | g_free(str); | |
1142 | return target; | |
1143 | } | |
1144 | ||
1145 | void object_property_set_bool(Object *obj, bool value, | |
1146 | const char *name, Error **errp) | |
1147 | { | |
1148 | QBool *qbool = qbool_from_bool(value); | |
1149 | object_property_set_qobject(obj, QOBJECT(qbool), name, errp); | |
1150 | ||
1151 | QDECREF(qbool); | |
1152 | } | |
1153 | ||
1154 | bool object_property_get_bool(Object *obj, const char *name, | |
1155 | Error **errp) | |
1156 | { | |
1157 | QObject *ret = object_property_get_qobject(obj, name, errp); | |
1158 | QBool *qbool; | |
1159 | bool retval; | |
1160 | ||
1161 | if (!ret) { | |
1162 | return false; | |
1163 | } | |
1164 | qbool = qobject_to_qbool(ret); | |
1165 | if (!qbool) { | |
1166 | error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "boolean"); | |
1167 | retval = false; | |
1168 | } else { | |
1169 | retval = qbool_get_bool(qbool); | |
1170 | } | |
1171 | ||
1172 | QDECREF(qbool); | |
1173 | return retval; | |
1174 | } | |
1175 | ||
1176 | void object_property_set_int(Object *obj, int64_t value, | |
1177 | const char *name, Error **errp) | |
1178 | { | |
1179 | QInt *qint = qint_from_int(value); | |
1180 | object_property_set_qobject(obj, QOBJECT(qint), name, errp); | |
1181 | ||
1182 | QDECREF(qint); | |
1183 | } | |
1184 | ||
1185 | int64_t object_property_get_int(Object *obj, const char *name, | |
1186 | Error **errp) | |
1187 | { | |
1188 | QObject *ret = object_property_get_qobject(obj, name, errp); | |
1189 | QInt *qint; | |
1190 | int64_t retval; | |
1191 | ||
1192 | if (!ret) { | |
1193 | return -1; | |
1194 | } | |
1195 | qint = qobject_to_qint(ret); | |
1196 | if (!qint) { | |
1197 | error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "int"); | |
1198 | retval = -1; | |
1199 | } else { | |
1200 | retval = qint_get_int(qint); | |
1201 | } | |
1202 | ||
1203 | QDECREF(qint); | |
1204 | return retval; | |
1205 | } | |
1206 | ||
1207 | typedef struct EnumProperty { | |
1208 | const char * const *strings; | |
1209 | int (*get)(Object *, Error **); | |
1210 | void (*set)(Object *, int, Error **); | |
1211 | } EnumProperty; | |
1212 | ||
1213 | int object_property_get_enum(Object *obj, const char *name, | |
1214 | const char *typename, Error **errp) | |
1215 | { | |
1216 | Error *err = NULL; | |
1217 | StringOutputVisitor *sov; | |
1218 | StringInputVisitor *siv; | |
1219 | char *str; | |
1220 | int ret; | |
1221 | ObjectProperty *prop = object_property_find(obj, name, errp); | |
1222 | EnumProperty *enumprop; | |
1223 | ||
1224 | if (prop == NULL) { | |
1225 | return 0; | |
1226 | } | |
1227 | ||
1228 | if (!g_str_equal(prop->type, typename)) { | |
1229 | error_setg(errp, "Property %s on %s is not '%s' enum type", | |
1230 | name, object_class_get_name( | |
1231 | object_get_class(obj)), typename); | |
1232 | return 0; | |
1233 | } | |
1234 | ||
1235 | enumprop = prop->opaque; | |
1236 | ||
1237 | sov = string_output_visitor_new(false); | |
1238 | object_property_get(obj, string_output_get_visitor(sov), name, &err); | |
1239 | if (err) { | |
1240 | error_propagate(errp, err); | |
1241 | string_output_visitor_cleanup(sov); | |
1242 | return 0; | |
1243 | } | |
1244 | str = string_output_get_string(sov); | |
1245 | siv = string_input_visitor_new(str); | |
1246 | string_output_visitor_cleanup(sov); | |
1247 | visit_type_enum(string_input_get_visitor(siv), name, &ret, | |
1248 | enumprop->strings, NULL, errp); | |
1249 | ||
1250 | g_free(str); | |
1251 | string_input_visitor_cleanup(siv); | |
1252 | ||
1253 | return ret; | |
1254 | } | |
1255 | ||
1256 | void object_property_get_uint16List(Object *obj, const char *name, | |
1257 | uint16List **list, Error **errp) | |
1258 | { | |
1259 | Error *err = NULL; | |
1260 | StringOutputVisitor *ov; | |
1261 | StringInputVisitor *iv; | |
1262 | char *str; | |
1263 | ||
1264 | ov = string_output_visitor_new(false); | |
1265 | object_property_get(obj, string_output_get_visitor(ov), | |
1266 | name, &err); | |
1267 | if (err) { | |
1268 | error_propagate(errp, err); | |
1269 | goto out; | |
1270 | } | |
1271 | str = string_output_get_string(ov); | |
1272 | iv = string_input_visitor_new(str); | |
1273 | visit_type_uint16List(string_input_get_visitor(iv), NULL, list, errp); | |
1274 | ||
1275 | g_free(str); | |
1276 | string_input_visitor_cleanup(iv); | |
1277 | out: | |
1278 | string_output_visitor_cleanup(ov); | |
1279 | } | |
1280 | ||
1281 | void object_property_parse(Object *obj, const char *string, | |
1282 | const char *name, Error **errp) | |
1283 | { | |
1284 | StringInputVisitor *siv; | |
1285 | siv = string_input_visitor_new(string); | |
1286 | object_property_set(obj, string_input_get_visitor(siv), name, errp); | |
1287 | ||
1288 | string_input_visitor_cleanup(siv); | |
1289 | } | |
1290 | ||
1291 | char *object_property_print(Object *obj, const char *name, bool human, | |
1292 | Error **errp) | |
1293 | { | |
1294 | StringOutputVisitor *sov; | |
1295 | char *string = NULL; | |
1296 | Error *local_err = NULL; | |
1297 | ||
1298 | sov = string_output_visitor_new(human); | |
1299 | object_property_get(obj, string_output_get_visitor(sov), name, &local_err); | |
1300 | if (local_err) { | |
1301 | error_propagate(errp, local_err); | |
1302 | goto out; | |
1303 | } | |
1304 | ||
1305 | string = string_output_get_string(sov); | |
1306 | ||
1307 | out: | |
1308 | string_output_visitor_cleanup(sov); | |
1309 | return string; | |
1310 | } | |
1311 | ||
1312 | const char *object_property_get_type(Object *obj, const char *name, Error **errp) | |
1313 | { | |
1314 | ObjectProperty *prop = object_property_find(obj, name, errp); | |
1315 | if (prop == NULL) { | |
1316 | return NULL; | |
1317 | } | |
1318 | ||
1319 | return prop->type; | |
1320 | } | |
1321 | ||
1322 | Object *object_get_root(void) | |
1323 | { | |
1324 | static Object *root; | |
1325 | ||
1326 | if (!root) { | |
1327 | root = object_new("container"); | |
1328 | } | |
1329 | ||
1330 | return root; | |
1331 | } | |
1332 | ||
1333 | Object *object_get_objects_root(void) | |
1334 | { | |
1335 | return container_get(object_get_root(), "/objects"); | |
1336 | } | |
1337 | ||
1338 | static void object_get_child_property(Object *obj, Visitor *v, | |
1339 | const char *name, void *opaque, | |
1340 | Error **errp) | |
1341 | { | |
1342 | Object *child = opaque; | |
1343 | gchar *path; | |
1344 | ||
1345 | path = object_get_canonical_path(child); | |
1346 | visit_type_str(v, name, &path, errp); | |
1347 | g_free(path); | |
1348 | } | |
1349 | ||
1350 | static Object *object_resolve_child_property(Object *parent, void *opaque, const gchar *part) | |
1351 | { | |
1352 | return opaque; | |
1353 | } | |
1354 | ||
1355 | static void object_finalize_child_property(Object *obj, const char *name, | |
1356 | void *opaque) | |
1357 | { | |
1358 | Object *child = opaque; | |
1359 | ||
1360 | if (child->class->unparent) { | |
1361 | (child->class->unparent)(child); | |
1362 | } | |
1363 | child->parent = NULL; | |
1364 | object_unref(child); | |
1365 | } | |
1366 | ||
1367 | void object_property_add_child(Object *obj, const char *name, | |
1368 | Object *child, Error **errp) | |
1369 | { | |
1370 | Error *local_err = NULL; | |
1371 | gchar *type; | |
1372 | ObjectProperty *op; | |
1373 | ||
1374 | if (child->parent != NULL) { | |
1375 | error_setg(errp, "child object is already parented"); | |
1376 | return; | |
1377 | } | |
1378 | ||
1379 | type = g_strdup_printf("child<%s>", object_get_typename(OBJECT(child))); | |
1380 | ||
1381 | op = object_property_add(obj, name, type, object_get_child_property, NULL, | |
1382 | object_finalize_child_property, child, &local_err); | |
1383 | if (local_err) { | |
1384 | error_propagate(errp, local_err); | |
1385 | goto out; | |
1386 | } | |
1387 | ||
1388 | op->resolve = object_resolve_child_property; | |
1389 | object_ref(child); | |
1390 | child->parent = obj; | |
1391 | ||
1392 | out: | |
1393 | g_free(type); | |
1394 | } | |
1395 | ||
1396 | void object_property_allow_set_link(Object *obj, const char *name, | |
1397 | Object *val, Error **errp) | |
1398 | { | |
1399 | /* Allow the link to be set, always */ | |
1400 | } | |
1401 | ||
1402 | typedef struct { | |
1403 | Object **child; | |
1404 | void (*check)(Object *, const char *, Object *, Error **); | |
1405 | ObjectPropertyLinkFlags flags; | |
1406 | } LinkProperty; | |
1407 | ||
1408 | static void object_get_link_property(Object *obj, Visitor *v, | |
1409 | const char *name, void *opaque, | |
1410 | Error **errp) | |
1411 | { | |
1412 | LinkProperty *lprop = opaque; | |
1413 | Object **child = lprop->child; | |
1414 | gchar *path; | |
1415 | ||
1416 | if (*child) { | |
1417 | path = object_get_canonical_path(*child); | |
1418 | visit_type_str(v, name, &path, errp); | |
1419 | g_free(path); | |
1420 | } else { | |
1421 | path = (gchar *)""; | |
1422 | visit_type_str(v, name, &path, errp); | |
1423 | } | |
1424 | } | |
1425 | ||
1426 | /* | |
1427 | * object_resolve_link: | |
1428 | * | |
1429 | * Lookup an object and ensure its type matches the link property type. This | |
1430 | * is similar to object_resolve_path() except type verification against the | |
1431 | * link property is performed. | |
1432 | * | |
1433 | * Returns: The matched object or NULL on path lookup failures. | |
1434 | */ | |
1435 | static Object *object_resolve_link(Object *obj, const char *name, | |
1436 | const char *path, Error **errp) | |
1437 | { | |
1438 | const char *type; | |
1439 | gchar *target_type; | |
1440 | bool ambiguous = false; | |
1441 | Object *target; | |
1442 | ||
1443 | /* Go from link<FOO> to FOO. */ | |
1444 | type = object_property_get_type(obj, name, NULL); | |
1445 | target_type = g_strndup(&type[5], strlen(type) - 6); | |
1446 | target = object_resolve_path_type(path, target_type, &ambiguous); | |
1447 | ||
1448 | if (ambiguous) { | |
1449 | error_setg(errp, "Path '%s' does not uniquely identify an object", | |
1450 | path); | |
1451 | } else if (!target) { | |
1452 | target = object_resolve_path(path, &ambiguous); | |
1453 | if (target || ambiguous) { | |
1454 | error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, target_type); | |
1455 | } else { | |
1456 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
1457 | "Device '%s' not found", path); | |
1458 | } | |
1459 | target = NULL; | |
1460 | } | |
1461 | g_free(target_type); | |
1462 | ||
1463 | return target; | |
1464 | } | |
1465 | ||
1466 | static void object_set_link_property(Object *obj, Visitor *v, | |
1467 | const char *name, void *opaque, | |
1468 | Error **errp) | |
1469 | { | |
1470 | Error *local_err = NULL; | |
1471 | LinkProperty *prop = opaque; | |
1472 | Object **child = prop->child; | |
1473 | Object *old_target = *child; | |
1474 | Object *new_target = NULL; | |
1475 | char *path = NULL; | |
1476 | ||
1477 | visit_type_str(v, name, &path, &local_err); | |
1478 | ||
1479 | if (!local_err && strcmp(path, "") != 0) { | |
1480 | new_target = object_resolve_link(obj, name, path, &local_err); | |
1481 | } | |
1482 | ||
1483 | g_free(path); | |
1484 | if (local_err) { | |
1485 | error_propagate(errp, local_err); | |
1486 | return; | |
1487 | } | |
1488 | ||
1489 | prop->check(obj, name, new_target, &local_err); | |
1490 | if (local_err) { | |
1491 | error_propagate(errp, local_err); | |
1492 | return; | |
1493 | } | |
1494 | ||
1495 | object_ref(new_target); | |
1496 | *child = new_target; | |
1497 | object_unref(old_target); | |
1498 | } | |
1499 | ||
1500 | static Object *object_resolve_link_property(Object *parent, void *opaque, const gchar *part) | |
1501 | { | |
1502 | LinkProperty *lprop = opaque; | |
1503 | ||
1504 | return *lprop->child; | |
1505 | } | |
1506 | ||
1507 | static void object_release_link_property(Object *obj, const char *name, | |
1508 | void *opaque) | |
1509 | { | |
1510 | LinkProperty *prop = opaque; | |
1511 | ||
1512 | if ((prop->flags & OBJ_PROP_LINK_UNREF_ON_RELEASE) && *prop->child) { | |
1513 | object_unref(*prop->child); | |
1514 | } | |
1515 | g_free(prop); | |
1516 | } | |
1517 | ||
1518 | void object_property_add_link(Object *obj, const char *name, | |
1519 | const char *type, Object **child, | |
1520 | void (*check)(Object *, const char *, | |
1521 | Object *, Error **), | |
1522 | ObjectPropertyLinkFlags flags, | |
1523 | Error **errp) | |
1524 | { | |
1525 | Error *local_err = NULL; | |
1526 | LinkProperty *prop = g_malloc(sizeof(*prop)); | |
1527 | gchar *full_type; | |
1528 | ObjectProperty *op; | |
1529 | ||
1530 | prop->child = child; | |
1531 | prop->check = check; | |
1532 | prop->flags = flags; | |
1533 | ||
1534 | full_type = g_strdup_printf("link<%s>", type); | |
1535 | ||
1536 | op = object_property_add(obj, name, full_type, | |
1537 | object_get_link_property, | |
1538 | check ? object_set_link_property : NULL, | |
1539 | object_release_link_property, | |
1540 | prop, | |
1541 | &local_err); | |
1542 | if (local_err) { | |
1543 | error_propagate(errp, local_err); | |
1544 | g_free(prop); | |
1545 | goto out; | |
1546 | } | |
1547 | ||
1548 | op->resolve = object_resolve_link_property; | |
1549 | ||
1550 | out: | |
1551 | g_free(full_type); | |
1552 | } | |
1553 | ||
1554 | void object_property_add_const_link(Object *obj, const char *name, | |
1555 | Object *target, Error **errp) | |
1556 | { | |
1557 | char *link_type; | |
1558 | ObjectProperty *op; | |
1559 | ||
1560 | link_type = g_strdup_printf("link<%s>", object_get_typename(target)); | |
1561 | op = object_property_add(obj, name, link_type, | |
1562 | object_get_child_property, NULL, | |
1563 | NULL, target, errp); | |
1564 | if (op != NULL) { | |
1565 | op->resolve = object_resolve_child_property; | |
1566 | } | |
1567 | g_free(link_type); | |
1568 | } | |
1569 | ||
1570 | gchar *object_get_canonical_path_component(Object *obj) | |
1571 | { | |
1572 | ObjectProperty *prop = NULL; | |
1573 | GHashTableIter iter; | |
1574 | ||
1575 | g_assert(obj); | |
1576 | g_assert(obj->parent != NULL); | |
1577 | ||
1578 | g_hash_table_iter_init(&iter, obj->parent->properties); | |
1579 | while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) { | |
1580 | if (!object_property_is_child(prop)) { | |
1581 | continue; | |
1582 | } | |
1583 | ||
1584 | if (prop->opaque == obj) { | |
1585 | return g_strdup(prop->name); | |
1586 | } | |
1587 | } | |
1588 | ||
1589 | /* obj had a parent but was not a child, should never happen */ | |
1590 | g_assert_not_reached(); | |
1591 | return NULL; | |
1592 | } | |
1593 | ||
1594 | gchar *object_get_canonical_path(Object *obj) | |
1595 | { | |
1596 | Object *root = object_get_root(); | |
1597 | char *newpath, *path = NULL; | |
1598 | ||
1599 | while (obj != root) { | |
1600 | char *component = object_get_canonical_path_component(obj); | |
1601 | ||
1602 | if (path) { | |
1603 | newpath = g_strdup_printf("%s/%s", component, path); | |
1604 | g_free(component); | |
1605 | g_free(path); | |
1606 | path = newpath; | |
1607 | } else { | |
1608 | path = component; | |
1609 | } | |
1610 | ||
1611 | obj = obj->parent; | |
1612 | } | |
1613 | ||
1614 | newpath = g_strdup_printf("/%s", path ? path : ""); | |
1615 | g_free(path); | |
1616 | ||
1617 | return newpath; | |
1618 | } | |
1619 | ||
1620 | Object *object_resolve_path_component(Object *parent, const gchar *part) | |
1621 | { | |
1622 | ObjectProperty *prop = object_property_find(parent, part, NULL); | |
1623 | if (prop == NULL) { | |
1624 | return NULL; | |
1625 | } | |
1626 | ||
1627 | if (prop->resolve) { | |
1628 | return prop->resolve(parent, prop->opaque, part); | |
1629 | } else { | |
1630 | return NULL; | |
1631 | } | |
1632 | } | |
1633 | ||
1634 | static Object *object_resolve_abs_path(Object *parent, | |
1635 | gchar **parts, | |
1636 | const char *typename, | |
1637 | int index) | |
1638 | { | |
1639 | Object *child; | |
1640 | ||
1641 | if (parts[index] == NULL) { | |
1642 | return object_dynamic_cast(parent, typename); | |
1643 | } | |
1644 | ||
1645 | if (strcmp(parts[index], "") == 0) { | |
1646 | return object_resolve_abs_path(parent, parts, typename, index + 1); | |
1647 | } | |
1648 | ||
1649 | child = object_resolve_path_component(parent, parts[index]); | |
1650 | if (!child) { | |
1651 | return NULL; | |
1652 | } | |
1653 | ||
1654 | return object_resolve_abs_path(child, parts, typename, index + 1); | |
1655 | } | |
1656 | ||
1657 | static Object *object_resolve_partial_path(Object *parent, | |
1658 | gchar **parts, | |
1659 | const char *typename, | |
1660 | bool *ambiguous) | |
1661 | { | |
1662 | Object *obj; | |
1663 | GHashTableIter iter; | |
1664 | ObjectProperty *prop; | |
1665 | ||
1666 | obj = object_resolve_abs_path(parent, parts, typename, 0); | |
1667 | ||
1668 | g_hash_table_iter_init(&iter, parent->properties); | |
1669 | while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) { | |
1670 | Object *found; | |
1671 | ||
1672 | if (!object_property_is_child(prop)) { | |
1673 | continue; | |
1674 | } | |
1675 | ||
1676 | found = object_resolve_partial_path(prop->opaque, parts, | |
1677 | typename, ambiguous); | |
1678 | if (found) { | |
1679 | if (obj) { | |
1680 | if (ambiguous) { | |
1681 | *ambiguous = true; | |
1682 | } | |
1683 | return NULL; | |
1684 | } | |
1685 | obj = found; | |
1686 | } | |
1687 | ||
1688 | if (ambiguous && *ambiguous) { | |
1689 | return NULL; | |
1690 | } | |
1691 | } | |
1692 | ||
1693 | return obj; | |
1694 | } | |
1695 | ||
1696 | Object *object_resolve_path_type(const char *path, const char *typename, | |
1697 | bool *ambiguous) | |
1698 | { | |
1699 | Object *obj; | |
1700 | gchar **parts; | |
1701 | ||
1702 | parts = g_strsplit(path, "/", 0); | |
1703 | assert(parts); | |
1704 | ||
1705 | if (parts[0] == NULL || strcmp(parts[0], "") != 0) { | |
1706 | if (ambiguous) { | |
1707 | *ambiguous = false; | |
1708 | } | |
1709 | obj = object_resolve_partial_path(object_get_root(), parts, | |
1710 | typename, ambiguous); | |
1711 | } else { | |
1712 | obj = object_resolve_abs_path(object_get_root(), parts, typename, 1); | |
1713 | } | |
1714 | ||
1715 | g_strfreev(parts); | |
1716 | ||
1717 | return obj; | |
1718 | } | |
1719 | ||
1720 | Object *object_resolve_path(const char *path, bool *ambiguous) | |
1721 | { | |
1722 | return object_resolve_path_type(path, TYPE_OBJECT, ambiguous); | |
1723 | } | |
1724 | ||
1725 | typedef struct StringProperty | |
1726 | { | |
1727 | char *(*get)(Object *, Error **); | |
1728 | void (*set)(Object *, const char *, Error **); | |
1729 | } StringProperty; | |
1730 | ||
1731 | static void property_get_str(Object *obj, Visitor *v, const char *name, | |
1732 | void *opaque, Error **errp) | |
1733 | { | |
1734 | StringProperty *prop = opaque; | |
1735 | char *value; | |
1736 | Error *err = NULL; | |
1737 | ||
1738 | value = prop->get(obj, &err); | |
1739 | if (err) { | |
1740 | error_propagate(errp, err); | |
1741 | return; | |
1742 | } | |
1743 | ||
1744 | visit_type_str(v, name, &value, errp); | |
1745 | g_free(value); | |
1746 | } | |
1747 | ||
1748 | static void property_set_str(Object *obj, Visitor *v, const char *name, | |
1749 | void *opaque, Error **errp) | |
1750 | { | |
1751 | StringProperty *prop = opaque; | |
1752 | char *value; | |
1753 | Error *local_err = NULL; | |
1754 | ||
1755 | visit_type_str(v, name, &value, &local_err); | |
1756 | if (local_err) { | |
1757 | error_propagate(errp, local_err); | |
1758 | return; | |
1759 | } | |
1760 | ||
1761 | prop->set(obj, value, errp); | |
1762 | g_free(value); | |
1763 | } | |
1764 | ||
1765 | static void property_release_str(Object *obj, const char *name, | |
1766 | void *opaque) | |
1767 | { | |
1768 | StringProperty *prop = opaque; | |
1769 | g_free(prop); | |
1770 | } | |
1771 | ||
1772 | void object_property_add_str(Object *obj, const char *name, | |
1773 | char *(*get)(Object *, Error **), | |
1774 | void (*set)(Object *, const char *, Error **), | |
1775 | Error **errp) | |
1776 | { | |
1777 | Error *local_err = NULL; | |
1778 | StringProperty *prop = g_malloc0(sizeof(*prop)); | |
1779 | ||
1780 | prop->get = get; | |
1781 | prop->set = set; | |
1782 | ||
1783 | object_property_add(obj, name, "string", | |
1784 | get ? property_get_str : NULL, | |
1785 | set ? property_set_str : NULL, | |
1786 | property_release_str, | |
1787 | prop, &local_err); | |
1788 | if (local_err) { | |
1789 | error_propagate(errp, local_err); | |
1790 | g_free(prop); | |
1791 | } | |
1792 | } | |
1793 | ||
1794 | void object_class_property_add_str(ObjectClass *klass, const char *name, | |
1795 | char *(*get)(Object *, Error **), | |
1796 | void (*set)(Object *, const char *, | |
1797 | Error **), | |
1798 | Error **errp) | |
1799 | { | |
1800 | Error *local_err = NULL; | |
1801 | StringProperty *prop = g_malloc0(sizeof(*prop)); | |
1802 | ||
1803 | prop->get = get; | |
1804 | prop->set = set; | |
1805 | ||
1806 | object_class_property_add(klass, name, "string", | |
1807 | get ? property_get_str : NULL, | |
1808 | set ? property_set_str : NULL, | |
1809 | property_release_str, | |
1810 | prop, &local_err); | |
1811 | if (local_err) { | |
1812 | error_propagate(errp, local_err); | |
1813 | g_free(prop); | |
1814 | } | |
1815 | } | |
1816 | ||
1817 | typedef struct BoolProperty | |
1818 | { | |
1819 | bool (*get)(Object *, Error **); | |
1820 | void (*set)(Object *, bool, Error **); | |
1821 | } BoolProperty; | |
1822 | ||
1823 | static void property_get_bool(Object *obj, Visitor *v, const char *name, | |
1824 | void *opaque, Error **errp) | |
1825 | { | |
1826 | BoolProperty *prop = opaque; | |
1827 | bool value; | |
1828 | Error *err = NULL; | |
1829 | ||
1830 | value = prop->get(obj, &err); | |
1831 | if (err) { | |
1832 | error_propagate(errp, err); | |
1833 | return; | |
1834 | } | |
1835 | ||
1836 | visit_type_bool(v, name, &value, errp); | |
1837 | } | |
1838 | ||
1839 | static void property_set_bool(Object *obj, Visitor *v, const char *name, | |
1840 | void *opaque, Error **errp) | |
1841 | { | |
1842 | BoolProperty *prop = opaque; | |
1843 | bool value; | |
1844 | Error *local_err = NULL; | |
1845 | ||
1846 | visit_type_bool(v, name, &value, &local_err); | |
1847 | if (local_err) { | |
1848 | error_propagate(errp, local_err); | |
1849 | return; | |
1850 | } | |
1851 | ||
1852 | prop->set(obj, value, errp); | |
1853 | } | |
1854 | ||
1855 | static void property_release_bool(Object *obj, const char *name, | |
1856 | void *opaque) | |
1857 | { | |
1858 | BoolProperty *prop = opaque; | |
1859 | g_free(prop); | |
1860 | } | |
1861 | ||
1862 | void object_property_add_bool(Object *obj, const char *name, | |
1863 | bool (*get)(Object *, Error **), | |
1864 | void (*set)(Object *, bool, Error **), | |
1865 | Error **errp) | |
1866 | { | |
1867 | Error *local_err = NULL; | |
1868 | BoolProperty *prop = g_malloc0(sizeof(*prop)); | |
1869 | ||
1870 | prop->get = get; | |
1871 | prop->set = set; | |
1872 | ||
1873 | object_property_add(obj, name, "bool", | |
1874 | get ? property_get_bool : NULL, | |
1875 | set ? property_set_bool : NULL, | |
1876 | property_release_bool, | |
1877 | prop, &local_err); | |
1878 | if (local_err) { | |
1879 | error_propagate(errp, local_err); | |
1880 | g_free(prop); | |
1881 | } | |
1882 | } | |
1883 | ||
1884 | void object_class_property_add_bool(ObjectClass *klass, const char *name, | |
1885 | bool (*get)(Object *, Error **), | |
1886 | void (*set)(Object *, bool, Error **), | |
1887 | Error **errp) | |
1888 | { | |
1889 | Error *local_err = NULL; | |
1890 | BoolProperty *prop = g_malloc0(sizeof(*prop)); | |
1891 | ||
1892 | prop->get = get; | |
1893 | prop->set = set; | |
1894 | ||
1895 | object_class_property_add(klass, name, "bool", | |
1896 | get ? property_get_bool : NULL, | |
1897 | set ? property_set_bool : NULL, | |
1898 | property_release_bool, | |
1899 | prop, &local_err); | |
1900 | if (local_err) { | |
1901 | error_propagate(errp, local_err); | |
1902 | g_free(prop); | |
1903 | } | |
1904 | } | |
1905 | ||
1906 | static void property_get_enum(Object *obj, Visitor *v, const char *name, | |
1907 | void *opaque, Error **errp) | |
1908 | { | |
1909 | EnumProperty *prop = opaque; | |
1910 | int value; | |
1911 | Error *err = NULL; | |
1912 | ||
1913 | value = prop->get(obj, &err); | |
1914 | if (err) { | |
1915 | error_propagate(errp, err); | |
1916 | return; | |
1917 | } | |
1918 | ||
1919 | visit_type_enum(v, name, &value, prop->strings, NULL, errp); | |
1920 | } | |
1921 | ||
1922 | static void property_set_enum(Object *obj, Visitor *v, const char *name, | |
1923 | void *opaque, Error **errp) | |
1924 | { | |
1925 | EnumProperty *prop = opaque; | |
1926 | int value; | |
1927 | Error *err = NULL; | |
1928 | ||
1929 | visit_type_enum(v, name, &value, prop->strings, NULL, &err); | |
1930 | if (err) { | |
1931 | error_propagate(errp, err); | |
1932 | return; | |
1933 | } | |
1934 | prop->set(obj, value, errp); | |
1935 | } | |
1936 | ||
1937 | static void property_release_enum(Object *obj, const char *name, | |
1938 | void *opaque) | |
1939 | { | |
1940 | EnumProperty *prop = opaque; | |
1941 | g_free(prop); | |
1942 | } | |
1943 | ||
1944 | void object_property_add_enum(Object *obj, const char *name, | |
1945 | const char *typename, | |
1946 | const char * const *strings, | |
1947 | int (*get)(Object *, Error **), | |
1948 | void (*set)(Object *, int, Error **), | |
1949 | Error **errp) | |
1950 | { | |
1951 | Error *local_err = NULL; | |
1952 | EnumProperty *prop = g_malloc(sizeof(*prop)); | |
1953 | ||
1954 | prop->strings = strings; | |
1955 | prop->get = get; | |
1956 | prop->set = set; | |
1957 | ||
1958 | object_property_add(obj, name, typename, | |
1959 | get ? property_get_enum : NULL, | |
1960 | set ? property_set_enum : NULL, | |
1961 | property_release_enum, | |
1962 | prop, &local_err); | |
1963 | if (local_err) { | |
1964 | error_propagate(errp, local_err); | |
1965 | g_free(prop); | |
1966 | } | |
1967 | } | |
1968 | ||
1969 | void object_class_property_add_enum(ObjectClass *klass, const char *name, | |
1970 | const char *typename, | |
1971 | const char * const *strings, | |
1972 | int (*get)(Object *, Error **), | |
1973 | void (*set)(Object *, int, Error **), | |
1974 | Error **errp) | |
1975 | { | |
1976 | Error *local_err = NULL; | |
1977 | EnumProperty *prop = g_malloc(sizeof(*prop)); | |
1978 | ||
1979 | prop->strings = strings; | |
1980 | prop->get = get; | |
1981 | prop->set = set; | |
1982 | ||
1983 | object_class_property_add(klass, name, typename, | |
1984 | get ? property_get_enum : NULL, | |
1985 | set ? property_set_enum : NULL, | |
1986 | property_release_enum, | |
1987 | prop, &local_err); | |
1988 | if (local_err) { | |
1989 | error_propagate(errp, local_err); | |
1990 | g_free(prop); | |
1991 | } | |
1992 | } | |
1993 | ||
1994 | typedef struct TMProperty { | |
1995 | void (*get)(Object *, struct tm *, Error **); | |
1996 | } TMProperty; | |
1997 | ||
1998 | static void property_get_tm(Object *obj, Visitor *v, const char *name, | |
1999 | void *opaque, Error **errp) | |
2000 | { | |
2001 | TMProperty *prop = opaque; | |
2002 | Error *err = NULL; | |
2003 | struct tm value; | |
2004 | ||
2005 | prop->get(obj, &value, &err); | |
2006 | if (err) { | |
2007 | goto out; | |
2008 | } | |
2009 | ||
2010 | visit_start_struct(v, name, NULL, "struct tm", 0, &err); | |
2011 | if (err) { | |
2012 | goto out; | |
2013 | } | |
2014 | visit_type_int32(v, "tm_year", &value.tm_year, &err); | |
2015 | if (err) { | |
2016 | goto out_end; | |
2017 | } | |
2018 | visit_type_int32(v, "tm_mon", &value.tm_mon, &err); | |
2019 | if (err) { | |
2020 | goto out_end; | |
2021 | } | |
2022 | visit_type_int32(v, "tm_mday", &value.tm_mday, &err); | |
2023 | if (err) { | |
2024 | goto out_end; | |
2025 | } | |
2026 | visit_type_int32(v, "tm_hour", &value.tm_hour, &err); | |
2027 | if (err) { | |
2028 | goto out_end; | |
2029 | } | |
2030 | visit_type_int32(v, "tm_min", &value.tm_min, &err); | |
2031 | if (err) { | |
2032 | goto out_end; | |
2033 | } | |
2034 | visit_type_int32(v, "tm_sec", &value.tm_sec, &err); | |
2035 | if (err) { | |
2036 | goto out_end; | |
2037 | } | |
2038 | out_end: | |
2039 | error_propagate(errp, err); | |
2040 | err = NULL; | |
2041 | visit_end_struct(v, errp); | |
2042 | out: | |
2043 | error_propagate(errp, err); | |
2044 | ||
2045 | } | |
2046 | ||
2047 | static void property_release_tm(Object *obj, const char *name, | |
2048 | void *opaque) | |
2049 | { | |
2050 | TMProperty *prop = opaque; | |
2051 | g_free(prop); | |
2052 | } | |
2053 | ||
2054 | void object_property_add_tm(Object *obj, const char *name, | |
2055 | void (*get)(Object *, struct tm *, Error **), | |
2056 | Error **errp) | |
2057 | { | |
2058 | Error *local_err = NULL; | |
2059 | TMProperty *prop = g_malloc0(sizeof(*prop)); | |
2060 | ||
2061 | prop->get = get; | |
2062 | ||
2063 | object_property_add(obj, name, "struct tm", | |
2064 | get ? property_get_tm : NULL, NULL, | |
2065 | property_release_tm, | |
2066 | prop, &local_err); | |
2067 | if (local_err) { | |
2068 | error_propagate(errp, local_err); | |
2069 | g_free(prop); | |
2070 | } | |
2071 | } | |
2072 | ||
2073 | void object_class_property_add_tm(ObjectClass *klass, const char *name, | |
2074 | void (*get)(Object *, struct tm *, Error **), | |
2075 | Error **errp) | |
2076 | { | |
2077 | Error *local_err = NULL; | |
2078 | TMProperty *prop = g_malloc0(sizeof(*prop)); | |
2079 | ||
2080 | prop->get = get; | |
2081 | ||
2082 | object_class_property_add(klass, name, "struct tm", | |
2083 | get ? property_get_tm : NULL, NULL, | |
2084 | property_release_tm, | |
2085 | prop, &local_err); | |
2086 | if (local_err) { | |
2087 | error_propagate(errp, local_err); | |
2088 | g_free(prop); | |
2089 | } | |
2090 | } | |
2091 | ||
2092 | static char *qdev_get_type(Object *obj, Error **errp) | |
2093 | { | |
2094 | return g_strdup(object_get_typename(obj)); | |
2095 | } | |
2096 | ||
2097 | static void property_get_uint8_ptr(Object *obj, Visitor *v, const char *name, | |
2098 | void *opaque, Error **errp) | |
2099 | { | |
2100 | uint8_t value = *(uint8_t *)opaque; | |
2101 | visit_type_uint8(v, name, &value, errp); | |
2102 | } | |
2103 | ||
2104 | static void property_get_uint16_ptr(Object *obj, Visitor *v, const char *name, | |
2105 | void *opaque, Error **errp) | |
2106 | { | |
2107 | uint16_t value = *(uint16_t *)opaque; | |
2108 | visit_type_uint16(v, name, &value, errp); | |
2109 | } | |
2110 | ||
2111 | static void property_get_uint32_ptr(Object *obj, Visitor *v, const char *name, | |
2112 | void *opaque, Error **errp) | |
2113 | { | |
2114 | uint32_t value = *(uint32_t *)opaque; | |
2115 | visit_type_uint32(v, name, &value, errp); | |
2116 | } | |
2117 | ||
2118 | static void property_get_uint64_ptr(Object *obj, Visitor *v, const char *name, | |
2119 | void *opaque, Error **errp) | |
2120 | { | |
2121 | uint64_t value = *(uint64_t *)opaque; | |
2122 | visit_type_uint64(v, name, &value, errp); | |
2123 | } | |
2124 | ||
2125 | void object_property_add_uint8_ptr(Object *obj, const char *name, | |
2126 | const uint8_t *v, Error **errp) | |
2127 | { | |
2128 | object_property_add(obj, name, "uint8", property_get_uint8_ptr, | |
2129 | NULL, NULL, (void *)v, errp); | |
2130 | } | |
2131 | ||
2132 | void object_class_property_add_uint8_ptr(ObjectClass *klass, const char *name, | |
2133 | const uint8_t *v, Error **errp) | |
2134 | { | |
2135 | object_class_property_add(klass, name, "uint8", property_get_uint8_ptr, | |
2136 | NULL, NULL, (void *)v, errp); | |
2137 | } | |
2138 | ||
2139 | void object_property_add_uint16_ptr(Object *obj, const char *name, | |
2140 | const uint16_t *v, Error **errp) | |
2141 | { | |
2142 | object_property_add(obj, name, "uint16", property_get_uint16_ptr, | |
2143 | NULL, NULL, (void *)v, errp); | |
2144 | } | |
2145 | ||
2146 | void object_class_property_add_uint16_ptr(ObjectClass *klass, const char *name, | |
2147 | const uint16_t *v, Error **errp) | |
2148 | { | |
2149 | object_class_property_add(klass, name, "uint16", property_get_uint16_ptr, | |
2150 | NULL, NULL, (void *)v, errp); | |
2151 | } | |
2152 | ||
2153 | void object_property_add_uint32_ptr(Object *obj, const char *name, | |
2154 | const uint32_t *v, Error **errp) | |
2155 | { | |
2156 | object_property_add(obj, name, "uint32", property_get_uint32_ptr, | |
2157 | NULL, NULL, (void *)v, errp); | |
2158 | } | |
2159 | ||
2160 | void object_class_property_add_uint32_ptr(ObjectClass *klass, const char *name, | |
2161 | const uint32_t *v, Error **errp) | |
2162 | { | |
2163 | object_class_property_add(klass, name, "uint32", property_get_uint32_ptr, | |
2164 | NULL, NULL, (void *)v, errp); | |
2165 | } | |
2166 | ||
2167 | void object_property_add_uint64_ptr(Object *obj, const char *name, | |
2168 | const uint64_t *v, Error **errp) | |
2169 | { | |
2170 | object_property_add(obj, name, "uint64", property_get_uint64_ptr, | |
2171 | NULL, NULL, (void *)v, errp); | |
2172 | } | |
2173 | ||
2174 | void object_class_property_add_uint64_ptr(ObjectClass *klass, const char *name, | |
2175 | const uint64_t *v, Error **errp) | |
2176 | { | |
2177 | object_class_property_add(klass, name, "uint64", property_get_uint64_ptr, | |
2178 | NULL, NULL, (void *)v, errp); | |
2179 | } | |
2180 | ||
2181 | typedef struct { | |
2182 | Object *target_obj; | |
2183 | char *target_name; | |
2184 | } AliasProperty; | |
2185 | ||
2186 | static void property_get_alias(Object *obj, Visitor *v, const char *name, | |
2187 | void *opaque, Error **errp) | |
2188 | { | |
2189 | AliasProperty *prop = opaque; | |
2190 | ||
2191 | object_property_get(prop->target_obj, v, prop->target_name, errp); | |
2192 | } | |
2193 | ||
2194 | static void property_set_alias(Object *obj, Visitor *v, const char *name, | |
2195 | void *opaque, Error **errp) | |
2196 | { | |
2197 | AliasProperty *prop = opaque; | |
2198 | ||
2199 | object_property_set(prop->target_obj, v, prop->target_name, errp); | |
2200 | } | |
2201 | ||
2202 | static Object *property_resolve_alias(Object *obj, void *opaque, | |
2203 | const gchar *part) | |
2204 | { | |
2205 | AliasProperty *prop = opaque; | |
2206 | ||
2207 | return object_resolve_path_component(prop->target_obj, prop->target_name); | |
2208 | } | |
2209 | ||
2210 | static void property_release_alias(Object *obj, const char *name, void *opaque) | |
2211 | { | |
2212 | AliasProperty *prop = opaque; | |
2213 | ||
2214 | g_free(prop->target_name); | |
2215 | g_free(prop); | |
2216 | } | |
2217 | ||
2218 | void object_property_add_alias(Object *obj, const char *name, | |
2219 | Object *target_obj, const char *target_name, | |
2220 | Error **errp) | |
2221 | { | |
2222 | AliasProperty *prop; | |
2223 | ObjectProperty *op; | |
2224 | ObjectProperty *target_prop; | |
2225 | gchar *prop_type; | |
2226 | Error *local_err = NULL; | |
2227 | ||
2228 | target_prop = object_property_find(target_obj, target_name, errp); | |
2229 | if (!target_prop) { | |
2230 | return; | |
2231 | } | |
2232 | ||
2233 | if (object_property_is_child(target_prop)) { | |
2234 | prop_type = g_strdup_printf("link%s", | |
2235 | target_prop->type + strlen("child")); | |
2236 | } else { | |
2237 | prop_type = g_strdup(target_prop->type); | |
2238 | } | |
2239 | ||
2240 | prop = g_malloc(sizeof(*prop)); | |
2241 | prop->target_obj = target_obj; | |
2242 | prop->target_name = g_strdup(target_name); | |
2243 | ||
2244 | op = object_property_add(obj, name, prop_type, | |
2245 | property_get_alias, | |
2246 | property_set_alias, | |
2247 | property_release_alias, | |
2248 | prop, &local_err); | |
2249 | if (local_err) { | |
2250 | error_propagate(errp, local_err); | |
2251 | g_free(prop); | |
2252 | goto out; | |
2253 | } | |
2254 | op->resolve = property_resolve_alias; | |
2255 | ||
2256 | object_property_set_description(obj, op->name, | |
2257 | target_prop->description, | |
2258 | &error_abort); | |
2259 | ||
2260 | out: | |
2261 | g_free(prop_type); | |
2262 | } | |
2263 | ||
2264 | void object_property_set_description(Object *obj, const char *name, | |
2265 | const char *description, Error **errp) | |
2266 | { | |
2267 | ObjectProperty *op; | |
2268 | ||
2269 | op = object_property_find(obj, name, errp); | |
2270 | if (!op) { | |
2271 | return; | |
2272 | } | |
2273 | ||
2274 | g_free(op->description); | |
2275 | op->description = g_strdup(description); | |
2276 | } | |
2277 | ||
2278 | void object_class_property_set_description(ObjectClass *klass, | |
2279 | const char *name, | |
2280 | const char *description, | |
2281 | Error **errp) | |
2282 | { | |
2283 | ObjectProperty *op; | |
2284 | ||
2285 | op = g_hash_table_lookup(klass->properties, name); | |
2286 | if (!op) { | |
2287 | error_setg(errp, "Property '.%s' not found", name); | |
2288 | return; | |
2289 | } | |
2290 | ||
2291 | g_free(op->description); | |
2292 | op->description = g_strdup(description); | |
2293 | } | |
2294 | ||
2295 | static void object_instance_init(Object *obj) | |
2296 | { | |
2297 | object_property_add_str(obj, "type", qdev_get_type, NULL, NULL); | |
2298 | } | |
2299 | ||
2300 | static void register_types(void) | |
2301 | { | |
2302 | static TypeInfo interface_info = { | |
2303 | .name = TYPE_INTERFACE, | |
2304 | .class_size = sizeof(InterfaceClass), | |
2305 | .abstract = true, | |
2306 | }; | |
2307 | ||
2308 | static TypeInfo object_info = { | |
2309 | .name = TYPE_OBJECT, | |
2310 | .instance_size = sizeof(Object), | |
2311 | .instance_init = object_instance_init, | |
2312 | .abstract = true, | |
2313 | }; | |
2314 | ||
2315 | type_interface = type_register_internal(&interface_info); | |
2316 | type_register_internal(&object_info); | |
2317 | } | |
2318 | ||
2319 | type_init(register_types) |