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 "hw/qdev-core.h" |
15 | #include "qapi/error.h" |
16 | #include "qom/object.h" |
17 | #include "qom/object_interfaces.h" |
18 | #include "qemu/cutils.h" |
19 | #include "qapi/visitor.h" |
20 | #include "qapi/string-input-visitor.h" |
21 | #include "qapi/string-output-visitor.h" |
22 | #include "qapi/qapi-builtin-visit.h" |
23 | #include "qapi/qmp/qerror.h" |
24 | #include "trace.h" |
25 | |
26 | /* TODO: replace QObject with a simpler visitor to avoid a dependency |
27 | * of the QOM core on QObject? */ |
28 | #include "qom/qom-qobject.h" |
29 | #include "qapi/qmp/qbool.h" |
30 | #include "qapi/qmp/qnum.h" |
31 | #include "qapi/qmp/qstring.h" |
32 | #include "qemu/error-report.h" |
33 | |
34 | #define MAX_INTERFACES 32 |
35 | |
36 | typedef struct InterfaceImpl InterfaceImpl; |
37 | typedef struct TypeImpl TypeImpl; |
38 | |
39 | struct InterfaceImpl |
40 | { |
41 | const char *typename; |
42 | }; |
43 | |
44 | struct TypeImpl |
45 | { |
46 | const char *name; |
47 | |
48 | size_t class_size; |
49 | |
50 | size_t instance_size; |
51 | |
52 | void (*class_init)(ObjectClass *klass, void *data); |
53 | void (*class_base_init)(ObjectClass *klass, void *data); |
54 | |
55 | void *class_data; |
56 | |
57 | void (*instance_init)(Object *obj); |
58 | void (*instance_post_init)(Object *obj); |
59 | void (*instance_finalize)(Object *obj); |
60 | |
61 | bool abstract; |
62 | |
63 | const char *parent; |
64 | TypeImpl *parent_type; |
65 | |
66 | ObjectClass *class; |
67 | |
68 | int num_interfaces; |
69 | InterfaceImpl interfaces[MAX_INTERFACES]; |
70 | }; |
71 | |
72 | static Type type_interface; |
73 | |
74 | static GHashTable *type_table_get(void) |
75 | { |
76 | static GHashTable *type_table; |
77 | |
78 | if (type_table == NULL) { |
79 | type_table = g_hash_table_new(g_str_hash, g_str_equal); |
80 | } |
81 | |
82 | return type_table; |
83 | } |
84 | |
85 | static bool enumerating_types; |
86 | |
87 | static void type_table_add(TypeImpl *ti) |
88 | { |
89 | assert(!enumerating_types); |
90 | g_hash_table_insert(type_table_get(), (void *)ti->name, ti); |
91 | } |
92 | |
93 | static TypeImpl *type_table_lookup(const char *name) |
94 | { |
95 | return g_hash_table_lookup(type_table_get(), name); |
96 | } |
97 | |
98 | static TypeImpl *type_new(const TypeInfo *info) |
99 | { |
100 | TypeImpl *ti = g_malloc0(sizeof(*ti)); |
101 | int i; |
102 | |
103 | g_assert(info->name != NULL); |
104 | |
105 | if (type_table_lookup(info->name) != NULL) { |
106 | fprintf(stderr, "Registering `%s' which already exists\n" , info->name); |
107 | abort(); |
108 | } |
109 | |
110 | ti->name = g_strdup(info->name); |
111 | ti->parent = g_strdup(info->parent); |
112 | |
113 | ti->class_size = info->class_size; |
114 | ti->instance_size = info->instance_size; |
115 | |
116 | ti->class_init = info->class_init; |
117 | ti->class_base_init = info->class_base_init; |
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 | void type_register_static_array(const TypeInfo *infos, int nr_infos) |
155 | { |
156 | int i; |
157 | |
158 | for (i = 0; i < nr_infos; i++) { |
159 | type_register_static(&infos[i]); |
160 | } |
161 | } |
162 | |
163 | static TypeImpl *type_get_by_name(const char *name) |
164 | { |
165 | if (name == NULL) { |
166 | return NULL; |
167 | } |
168 | |
169 | return type_table_lookup(name); |
170 | } |
171 | |
172 | static TypeImpl *type_get_parent(TypeImpl *type) |
173 | { |
174 | if (!type->parent_type && type->parent) { |
175 | type->parent_type = type_get_by_name(type->parent); |
176 | g_assert(type->parent_type != NULL); |
177 | } |
178 | |
179 | return type->parent_type; |
180 | } |
181 | |
182 | static bool type_has_parent(TypeImpl *type) |
183 | { |
184 | return (type->parent != NULL); |
185 | } |
186 | |
187 | static size_t type_class_get_size(TypeImpl *ti) |
188 | { |
189 | if (ti->class_size) { |
190 | return ti->class_size; |
191 | } |
192 | |
193 | if (type_has_parent(ti)) { |
194 | return type_class_get_size(type_get_parent(ti)); |
195 | } |
196 | |
197 | return sizeof(ObjectClass); |
198 | } |
199 | |
200 | static size_t type_object_get_size(TypeImpl *ti) |
201 | { |
202 | if (ti->instance_size) { |
203 | return ti->instance_size; |
204 | } |
205 | |
206 | if (type_has_parent(ti)) { |
207 | return type_object_get_size(type_get_parent(ti)); |
208 | } |
209 | |
210 | return 0; |
211 | } |
212 | |
213 | size_t object_type_get_instance_size(const char *typename) |
214 | { |
215 | TypeImpl *type = type_get_by_name(typename); |
216 | |
217 | g_assert(type != NULL); |
218 | return type_object_get_size(type); |
219 | } |
220 | |
221 | static bool type_is_ancestor(TypeImpl *type, TypeImpl *target_type) |
222 | { |
223 | assert(target_type); |
224 | |
225 | /* Check if target_type is a direct ancestor of type */ |
226 | while (type) { |
227 | if (type == target_type) { |
228 | return true; |
229 | } |
230 | |
231 | type = type_get_parent(type); |
232 | } |
233 | |
234 | return false; |
235 | } |
236 | |
237 | static void type_initialize(TypeImpl *ti); |
238 | |
239 | static void type_initialize_interface(TypeImpl *ti, TypeImpl *interface_type, |
240 | TypeImpl *parent_type) |
241 | { |
242 | InterfaceClass *new_iface; |
243 | TypeInfo info = { }; |
244 | TypeImpl *iface_impl; |
245 | |
246 | info.parent = parent_type->name; |
247 | info.name = g_strdup_printf("%s::%s" , ti->name, interface_type->name); |
248 | info.abstract = true; |
249 | |
250 | iface_impl = type_new(&info); |
251 | iface_impl->parent_type = parent_type; |
252 | type_initialize(iface_impl); |
253 | g_free((char *)info.name); |
254 | |
255 | new_iface = (InterfaceClass *)iface_impl->class; |
256 | new_iface->concrete_class = ti->class; |
257 | new_iface->interface_type = interface_type; |
258 | |
259 | ti->class->interfaces = g_slist_append(ti->class->interfaces, |
260 | iface_impl->class); |
261 | } |
262 | |
263 | static void object_property_free(gpointer data) |
264 | { |
265 | ObjectProperty *prop = data; |
266 | |
267 | g_free(prop->name); |
268 | g_free(prop->type); |
269 | g_free(prop->description); |
270 | g_free(prop); |
271 | } |
272 | |
273 | static void type_initialize(TypeImpl *ti) |
274 | { |
275 | TypeImpl *parent; |
276 | |
277 | if (ti->class) { |
278 | return; |
279 | } |
280 | |
281 | ti->class_size = type_class_get_size(ti); |
282 | ti->instance_size = type_object_get_size(ti); |
283 | /* Any type with zero instance_size is implicitly abstract. |
284 | * This means interface types are all abstract. |
285 | */ |
286 | if (ti->instance_size == 0) { |
287 | ti->abstract = true; |
288 | } |
289 | if (type_is_ancestor(ti, type_interface)) { |
290 | assert(ti->instance_size == 0); |
291 | assert(ti->abstract); |
292 | assert(!ti->instance_init); |
293 | assert(!ti->instance_post_init); |
294 | assert(!ti->instance_finalize); |
295 | assert(!ti->num_interfaces); |
296 | } |
297 | ti->class = g_malloc0(ti->class_size); |
298 | |
299 | parent = type_get_parent(ti); |
300 | if (parent) { |
301 | type_initialize(parent); |
302 | GSList *e; |
303 | int i; |
304 | |
305 | g_assert(parent->class_size <= ti->class_size); |
306 | memcpy(ti->class, parent->class, parent->class_size); |
307 | ti->class->interfaces = NULL; |
308 | ti->class->properties = g_hash_table_new_full( |
309 | g_str_hash, g_str_equal, g_free, object_property_free); |
310 | |
311 | for (e = parent->class->interfaces; e; e = e->next) { |
312 | InterfaceClass *iface = e->data; |
313 | ObjectClass *klass = OBJECT_CLASS(iface); |
314 | |
315 | type_initialize_interface(ti, iface->interface_type, klass->type); |
316 | } |
317 | |
318 | for (i = 0; i < ti->num_interfaces; i++) { |
319 | TypeImpl *t = type_get_by_name(ti->interfaces[i].typename); |
320 | for (e = ti->class->interfaces; e; e = e->next) { |
321 | TypeImpl *target_type = OBJECT_CLASS(e->data)->type; |
322 | |
323 | if (type_is_ancestor(target_type, t)) { |
324 | break; |
325 | } |
326 | } |
327 | |
328 | if (e) { |
329 | continue; |
330 | } |
331 | |
332 | type_initialize_interface(ti, t, t); |
333 | } |
334 | } else { |
335 | ti->class->properties = g_hash_table_new_full( |
336 | g_str_hash, g_str_equal, g_free, object_property_free); |
337 | } |
338 | |
339 | ti->class->type = ti; |
340 | |
341 | while (parent) { |
342 | if (parent->class_base_init) { |
343 | parent->class_base_init(ti->class, ti->class_data); |
344 | } |
345 | parent = type_get_parent(parent); |
346 | } |
347 | |
348 | if (ti->class_init) { |
349 | ti->class_init(ti->class, ti->class_data); |
350 | } |
351 | } |
352 | |
353 | static void object_init_with_type(Object *obj, TypeImpl *ti) |
354 | { |
355 | if (type_has_parent(ti)) { |
356 | object_init_with_type(obj, type_get_parent(ti)); |
357 | } |
358 | |
359 | if (ti->instance_init) { |
360 | ti->instance_init(obj); |
361 | } |
362 | } |
363 | |
364 | static void object_post_init_with_type(Object *obj, TypeImpl *ti) |
365 | { |
366 | if (ti->instance_post_init) { |
367 | ti->instance_post_init(obj); |
368 | } |
369 | |
370 | if (type_has_parent(ti)) { |
371 | object_post_init_with_type(obj, type_get_parent(ti)); |
372 | } |
373 | } |
374 | |
375 | void object_apply_global_props(Object *obj, const GPtrArray *props, Error **errp) |
376 | { |
377 | int i; |
378 | |
379 | if (!props) { |
380 | return; |
381 | } |
382 | |
383 | for (i = 0; i < props->len; i++) { |
384 | GlobalProperty *p = g_ptr_array_index(props, i); |
385 | Error *err = NULL; |
386 | |
387 | if (object_dynamic_cast(obj, p->driver) == NULL) { |
388 | continue; |
389 | } |
390 | if (p->optional && !object_property_find(obj, p->property, NULL)) { |
391 | continue; |
392 | } |
393 | p->used = true; |
394 | object_property_parse(obj, p->value, p->property, &err); |
395 | if (err != NULL) { |
396 | error_prepend(&err, "can't apply global %s.%s=%s: " , |
397 | p->driver, p->property, p->value); |
398 | /* |
399 | * If errp != NULL, propagate error and return. |
400 | * If errp == NULL, report a warning, but keep going |
401 | * with the remaining globals. |
402 | */ |
403 | if (errp) { |
404 | error_propagate(errp, err); |
405 | return; |
406 | } else { |
407 | warn_report_err(err); |
408 | } |
409 | } |
410 | } |
411 | } |
412 | |
413 | /* |
414 | * Global property defaults |
415 | * Slot 0: accelerator's global property defaults |
416 | * Slot 1: machine's global property defaults |
417 | * Each is a GPtrArray of of GlobalProperty. |
418 | * Applied in order, later entries override earlier ones. |
419 | */ |
420 | static GPtrArray *object_compat_props[2]; |
421 | |
422 | /* |
423 | * Set machine's global property defaults to @compat_props. |
424 | * May be called at most once. |
425 | */ |
426 | void object_set_machine_compat_props(GPtrArray *compat_props) |
427 | { |
428 | assert(!object_compat_props[1]); |
429 | object_compat_props[1] = compat_props; |
430 | } |
431 | |
432 | /* |
433 | * Set accelerator's global property defaults to @compat_props. |
434 | * May be called at most once. |
435 | */ |
436 | void object_set_accelerator_compat_props(GPtrArray *compat_props) |
437 | { |
438 | assert(!object_compat_props[0]); |
439 | object_compat_props[0] = compat_props; |
440 | } |
441 | |
442 | void object_apply_compat_props(Object *obj) |
443 | { |
444 | int i; |
445 | |
446 | for (i = 0; i < ARRAY_SIZE(object_compat_props); i++) { |
447 | object_apply_global_props(obj, object_compat_props[i], |
448 | &error_abort); |
449 | } |
450 | } |
451 | |
452 | static void object_initialize_with_type(void *data, size_t size, TypeImpl *type) |
453 | { |
454 | Object *obj = data; |
455 | |
456 | type_initialize(type); |
457 | |
458 | g_assert(type->instance_size >= sizeof(Object)); |
459 | g_assert(type->abstract == false); |
460 | g_assert(size >= type->instance_size); |
461 | |
462 | memset(obj, 0, type->instance_size); |
463 | obj->class = type->class; |
464 | object_ref(obj); |
465 | obj->properties = g_hash_table_new_full(g_str_hash, g_str_equal, |
466 | NULL, object_property_free); |
467 | object_init_with_type(obj, type); |
468 | object_post_init_with_type(obj, type); |
469 | } |
470 | |
471 | void object_initialize(void *data, size_t size, const char *typename) |
472 | { |
473 | TypeImpl *type = type_get_by_name(typename); |
474 | |
475 | if (!type) { |
476 | error_report("missing object type '%s'" , typename); |
477 | abort(); |
478 | } |
479 | |
480 | object_initialize_with_type(data, size, type); |
481 | } |
482 | |
483 | void object_initialize_child(Object *parentobj, const char *propname, |
484 | void *childobj, size_t size, const char *type, |
485 | Error **errp, ...) |
486 | { |
487 | va_list vargs; |
488 | |
489 | va_start(vargs, errp); |
490 | object_initialize_childv(parentobj, propname, childobj, size, type, errp, |
491 | vargs); |
492 | va_end(vargs); |
493 | } |
494 | |
495 | void object_initialize_childv(Object *parentobj, const char *propname, |
496 | void *childobj, size_t size, const char *type, |
497 | Error **errp, va_list vargs) |
498 | { |
499 | Error *local_err = NULL; |
500 | Object *obj; |
501 | UserCreatable *uc; |
502 | |
503 | object_initialize(childobj, size, type); |
504 | obj = OBJECT(childobj); |
505 | |
506 | object_set_propv(obj, &local_err, vargs); |
507 | if (local_err) { |
508 | goto out; |
509 | } |
510 | |
511 | object_property_add_child(parentobj, propname, obj, &local_err); |
512 | if (local_err) { |
513 | goto out; |
514 | } |
515 | |
516 | uc = (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE); |
517 | if (uc) { |
518 | user_creatable_complete(uc, &local_err); |
519 | if (local_err) { |
520 | object_unparent(obj); |
521 | goto out; |
522 | } |
523 | } |
524 | |
525 | /* |
526 | * Since object_property_add_child added a reference to the child object, |
527 | * we can drop the reference added by object_initialize(), so the child |
528 | * property will own the only reference to the object. |
529 | */ |
530 | object_unref(obj); |
531 | |
532 | out: |
533 | if (local_err) { |
534 | error_propagate(errp, local_err); |
535 | object_unref(obj); |
536 | } |
537 | } |
538 | |
539 | static inline bool object_property_is_child(ObjectProperty *prop) |
540 | { |
541 | return strstart(prop->type, "child<" , NULL); |
542 | } |
543 | |
544 | static void object_property_del_all(Object *obj) |
545 | { |
546 | ObjectProperty *prop; |
547 | GHashTableIter iter; |
548 | gpointer key, value; |
549 | bool released; |
550 | |
551 | do { |
552 | released = false; |
553 | g_hash_table_iter_init(&iter, obj->properties); |
554 | while (g_hash_table_iter_next(&iter, &key, &value)) { |
555 | prop = value; |
556 | if (prop->release) { |
557 | prop->release(obj, prop->name, prop->opaque); |
558 | prop->release = NULL; |
559 | released = true; |
560 | break; |
561 | } |
562 | g_hash_table_iter_remove(&iter); |
563 | } |
564 | } while (released); |
565 | |
566 | g_hash_table_unref(obj->properties); |
567 | } |
568 | |
569 | static void object_property_del_child(Object *obj, Object *child, Error **errp) |
570 | { |
571 | ObjectProperty *prop; |
572 | GHashTableIter iter; |
573 | gpointer key, value; |
574 | |
575 | g_hash_table_iter_init(&iter, obj->properties); |
576 | while (g_hash_table_iter_next(&iter, &key, &value)) { |
577 | prop = value; |
578 | if (object_property_is_child(prop) && prop->opaque == child) { |
579 | if (prop->release) { |
580 | prop->release(obj, prop->name, prop->opaque); |
581 | prop->release = NULL; |
582 | } |
583 | break; |
584 | } |
585 | } |
586 | g_hash_table_iter_init(&iter, obj->properties); |
587 | while (g_hash_table_iter_next(&iter, &key, &value)) { |
588 | prop = value; |
589 | if (object_property_is_child(prop) && prop->opaque == child) { |
590 | g_hash_table_iter_remove(&iter); |
591 | break; |
592 | } |
593 | } |
594 | } |
595 | |
596 | void object_unparent(Object *obj) |
597 | { |
598 | if (obj->parent) { |
599 | object_property_del_child(obj->parent, obj, NULL); |
600 | } |
601 | } |
602 | |
603 | static void object_deinit(Object *obj, TypeImpl *type) |
604 | { |
605 | if (type->instance_finalize) { |
606 | type->instance_finalize(obj); |
607 | } |
608 | |
609 | if (type_has_parent(type)) { |
610 | object_deinit(obj, type_get_parent(type)); |
611 | } |
612 | } |
613 | |
614 | static void object_finalize(void *data) |
615 | { |
616 | Object *obj = data; |
617 | TypeImpl *ti = obj->class->type; |
618 | |
619 | object_property_del_all(obj); |
620 | object_deinit(obj, ti); |
621 | |
622 | g_assert(obj->ref == 0); |
623 | if (obj->free) { |
624 | obj->free(obj); |
625 | } |
626 | } |
627 | |
628 | static Object *object_new_with_type(Type type) |
629 | { |
630 | Object *obj; |
631 | |
632 | g_assert(type != NULL); |
633 | type_initialize(type); |
634 | |
635 | obj = g_malloc(type->instance_size); |
636 | object_initialize_with_type(obj, type->instance_size, type); |
637 | obj->free = g_free; |
638 | |
639 | return obj; |
640 | } |
641 | |
642 | Object *object_new(const char *typename) |
643 | { |
644 | TypeImpl *ti = type_get_by_name(typename); |
645 | |
646 | return object_new_with_type(ti); |
647 | } |
648 | |
649 | |
650 | Object *object_new_with_props(const char *typename, |
651 | Object *parent, |
652 | const char *id, |
653 | Error **errp, |
654 | ...) |
655 | { |
656 | va_list vargs; |
657 | Object *obj; |
658 | |
659 | va_start(vargs, errp); |
660 | obj = object_new_with_propv(typename, parent, id, errp, vargs); |
661 | va_end(vargs); |
662 | |
663 | return obj; |
664 | } |
665 | |
666 | |
667 | Object *object_new_with_propv(const char *typename, |
668 | Object *parent, |
669 | const char *id, |
670 | Error **errp, |
671 | va_list vargs) |
672 | { |
673 | Object *obj; |
674 | ObjectClass *klass; |
675 | Error *local_err = NULL; |
676 | UserCreatable *uc; |
677 | |
678 | klass = object_class_by_name(typename); |
679 | if (!klass) { |
680 | error_setg(errp, "invalid object type: %s" , typename); |
681 | return NULL; |
682 | } |
683 | |
684 | if (object_class_is_abstract(klass)) { |
685 | error_setg(errp, "object type '%s' is abstract" , typename); |
686 | return NULL; |
687 | } |
688 | obj = object_new_with_type(klass->type); |
689 | |
690 | if (object_set_propv(obj, &local_err, vargs) < 0) { |
691 | goto error; |
692 | } |
693 | |
694 | if (id != NULL) { |
695 | object_property_add_child(parent, id, obj, &local_err); |
696 | if (local_err) { |
697 | goto error; |
698 | } |
699 | } |
700 | |
701 | uc = (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE); |
702 | if (uc) { |
703 | user_creatable_complete(uc, &local_err); |
704 | if (local_err) { |
705 | if (id != NULL) { |
706 | object_unparent(obj); |
707 | } |
708 | goto error; |
709 | } |
710 | } |
711 | |
712 | object_unref(OBJECT(obj)); |
713 | return obj; |
714 | |
715 | error: |
716 | error_propagate(errp, local_err); |
717 | object_unref(obj); |
718 | return NULL; |
719 | } |
720 | |
721 | |
722 | int object_set_props(Object *obj, |
723 | Error **errp, |
724 | ...) |
725 | { |
726 | va_list vargs; |
727 | int ret; |
728 | |
729 | va_start(vargs, errp); |
730 | ret = object_set_propv(obj, errp, vargs); |
731 | va_end(vargs); |
732 | |
733 | return ret; |
734 | } |
735 | |
736 | |
737 | int object_set_propv(Object *obj, |
738 | Error **errp, |
739 | va_list vargs) |
740 | { |
741 | const char *propname; |
742 | Error *local_err = NULL; |
743 | |
744 | propname = va_arg(vargs, char *); |
745 | while (propname != NULL) { |
746 | const char *value = va_arg(vargs, char *); |
747 | |
748 | g_assert(value != NULL); |
749 | object_property_parse(obj, value, propname, &local_err); |
750 | if (local_err) { |
751 | error_propagate(errp, local_err); |
752 | return -1; |
753 | } |
754 | propname = va_arg(vargs, char *); |
755 | } |
756 | |
757 | return 0; |
758 | } |
759 | |
760 | |
761 | Object *object_dynamic_cast(Object *obj, const char *typename) |
762 | { |
763 | if (obj && object_class_dynamic_cast(object_get_class(obj), typename)) { |
764 | return obj; |
765 | } |
766 | |
767 | return NULL; |
768 | } |
769 | |
770 | Object *object_dynamic_cast_assert(Object *obj, const char *typename, |
771 | const char *file, int line, const char *func) |
772 | { |
773 | trace_object_dynamic_cast_assert(obj ? obj->class->type->name : "(null)" , |
774 | typename, file, line, func); |
775 | |
776 | #ifdef CONFIG_QOM_CAST_DEBUG |
777 | int i; |
778 | Object *inst; |
779 | |
780 | for (i = 0; obj && i < OBJECT_CLASS_CAST_CACHE; i++) { |
781 | if (atomic_read(&obj->class->object_cast_cache[i]) == typename) { |
782 | goto out; |
783 | } |
784 | } |
785 | |
786 | inst = object_dynamic_cast(obj, typename); |
787 | |
788 | if (!inst && obj) { |
789 | fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n" , |
790 | file, line, func, obj, typename); |
791 | abort(); |
792 | } |
793 | |
794 | assert(obj == inst); |
795 | |
796 | if (obj && obj == inst) { |
797 | for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) { |
798 | atomic_set(&obj->class->object_cast_cache[i - 1], |
799 | atomic_read(&obj->class->object_cast_cache[i])); |
800 | } |
801 | atomic_set(&obj->class->object_cast_cache[i - 1], typename); |
802 | } |
803 | |
804 | out: |
805 | #endif |
806 | return obj; |
807 | } |
808 | |
809 | ObjectClass *object_class_dynamic_cast(ObjectClass *class, |
810 | const char *typename) |
811 | { |
812 | ObjectClass *ret = NULL; |
813 | TypeImpl *target_type; |
814 | TypeImpl *type; |
815 | |
816 | if (!class) { |
817 | return NULL; |
818 | } |
819 | |
820 | /* A simple fast path that can trigger a lot for leaf classes. */ |
821 | type = class->type; |
822 | if (type->name == typename) { |
823 | return class; |
824 | } |
825 | |
826 | target_type = type_get_by_name(typename); |
827 | if (!target_type) { |
828 | /* target class type unknown, so fail the cast */ |
829 | return NULL; |
830 | } |
831 | |
832 | if (type->class->interfaces && |
833 | type_is_ancestor(target_type, type_interface)) { |
834 | int found = 0; |
835 | GSList *i; |
836 | |
837 | for (i = class->interfaces; i; i = i->next) { |
838 | ObjectClass *target_class = i->data; |
839 | |
840 | if (type_is_ancestor(target_class->type, target_type)) { |
841 | ret = target_class; |
842 | found++; |
843 | } |
844 | } |
845 | |
846 | /* The match was ambiguous, don't allow a cast */ |
847 | if (found > 1) { |
848 | ret = NULL; |
849 | } |
850 | } else if (type_is_ancestor(type, target_type)) { |
851 | ret = class; |
852 | } |
853 | |
854 | return ret; |
855 | } |
856 | |
857 | ObjectClass *object_class_dynamic_cast_assert(ObjectClass *class, |
858 | const char *typename, |
859 | const char *file, int line, |
860 | const char *func) |
861 | { |
862 | ObjectClass *ret; |
863 | |
864 | trace_object_class_dynamic_cast_assert(class ? class->type->name : "(null)" , |
865 | typename, file, line, func); |
866 | |
867 | #ifdef CONFIG_QOM_CAST_DEBUG |
868 | int i; |
869 | |
870 | for (i = 0; class && i < OBJECT_CLASS_CAST_CACHE; i++) { |
871 | if (atomic_read(&class->class_cast_cache[i]) == typename) { |
872 | ret = class; |
873 | goto out; |
874 | } |
875 | } |
876 | #else |
877 | if (!class || !class->interfaces) { |
878 | return class; |
879 | } |
880 | #endif |
881 | |
882 | ret = object_class_dynamic_cast(class, typename); |
883 | if (!ret && class) { |
884 | fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n" , |
885 | file, line, func, class, typename); |
886 | abort(); |
887 | } |
888 | |
889 | #ifdef CONFIG_QOM_CAST_DEBUG |
890 | if (class && ret == class) { |
891 | for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) { |
892 | atomic_set(&class->class_cast_cache[i - 1], |
893 | atomic_read(&class->class_cast_cache[i])); |
894 | } |
895 | atomic_set(&class->class_cast_cache[i - 1], typename); |
896 | } |
897 | out: |
898 | #endif |
899 | return ret; |
900 | } |
901 | |
902 | const char *object_get_typename(const Object *obj) |
903 | { |
904 | return obj->class->type->name; |
905 | } |
906 | |
907 | ObjectClass *object_get_class(Object *obj) |
908 | { |
909 | return obj->class; |
910 | } |
911 | |
912 | bool object_class_is_abstract(ObjectClass *klass) |
913 | { |
914 | return klass->type->abstract; |
915 | } |
916 | |
917 | const char *object_class_get_name(ObjectClass *klass) |
918 | { |
919 | return klass->type->name; |
920 | } |
921 | |
922 | ObjectClass *object_class_by_name(const char *typename) |
923 | { |
924 | TypeImpl *type = type_get_by_name(typename); |
925 | |
926 | if (!type) { |
927 | return NULL; |
928 | } |
929 | |
930 | type_initialize(type); |
931 | |
932 | return type->class; |
933 | } |
934 | |
935 | ObjectClass *object_class_get_parent(ObjectClass *class) |
936 | { |
937 | TypeImpl *type = type_get_parent(class->type); |
938 | |
939 | if (!type) { |
940 | return NULL; |
941 | } |
942 | |
943 | type_initialize(type); |
944 | |
945 | return type->class; |
946 | } |
947 | |
948 | typedef struct OCFData |
949 | { |
950 | void (*fn)(ObjectClass *klass, void *opaque); |
951 | const char *implements_type; |
952 | bool include_abstract; |
953 | void *opaque; |
954 | } OCFData; |
955 | |
956 | static void object_class_foreach_tramp(gpointer key, gpointer value, |
957 | gpointer opaque) |
958 | { |
959 | OCFData *data = opaque; |
960 | TypeImpl *type = value; |
961 | ObjectClass *k; |
962 | |
963 | type_initialize(type); |
964 | k = type->class; |
965 | |
966 | if (!data->include_abstract && type->abstract) { |
967 | return; |
968 | } |
969 | |
970 | if (data->implements_type && |
971 | !object_class_dynamic_cast(k, data->implements_type)) { |
972 | return; |
973 | } |
974 | |
975 | data->fn(k, data->opaque); |
976 | } |
977 | |
978 | void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque), |
979 | const char *implements_type, bool include_abstract, |
980 | void *opaque) |
981 | { |
982 | OCFData data = { fn, implements_type, include_abstract, opaque }; |
983 | |
984 | enumerating_types = true; |
985 | g_hash_table_foreach(type_table_get(), object_class_foreach_tramp, &data); |
986 | enumerating_types = false; |
987 | } |
988 | |
989 | static int do_object_child_foreach(Object *obj, |
990 | int (*fn)(Object *child, void *opaque), |
991 | void *opaque, bool recurse) |
992 | { |
993 | GHashTableIter iter; |
994 | ObjectProperty *prop; |
995 | int ret = 0; |
996 | |
997 | g_hash_table_iter_init(&iter, obj->properties); |
998 | while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) { |
999 | if (object_property_is_child(prop)) { |
1000 | Object *child = prop->opaque; |
1001 | |
1002 | ret = fn(child, opaque); |
1003 | if (ret != 0) { |
1004 | break; |
1005 | } |
1006 | if (recurse) { |
1007 | do_object_child_foreach(child, fn, opaque, true); |
1008 | } |
1009 | } |
1010 | } |
1011 | return ret; |
1012 | } |
1013 | |
1014 | int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque), |
1015 | void *opaque) |
1016 | { |
1017 | return do_object_child_foreach(obj, fn, opaque, false); |
1018 | } |
1019 | |
1020 | int object_child_foreach_recursive(Object *obj, |
1021 | int (*fn)(Object *child, void *opaque), |
1022 | void *opaque) |
1023 | { |
1024 | return do_object_child_foreach(obj, fn, opaque, true); |
1025 | } |
1026 | |
1027 | static void object_class_get_list_tramp(ObjectClass *klass, void *opaque) |
1028 | { |
1029 | GSList **list = opaque; |
1030 | |
1031 | *list = g_slist_prepend(*list, klass); |
1032 | } |
1033 | |
1034 | GSList *object_class_get_list(const char *implements_type, |
1035 | bool include_abstract) |
1036 | { |
1037 | GSList *list = NULL; |
1038 | |
1039 | object_class_foreach(object_class_get_list_tramp, |
1040 | implements_type, include_abstract, &list); |
1041 | return list; |
1042 | } |
1043 | |
1044 | static gint object_class_cmp(gconstpointer a, gconstpointer b) |
1045 | { |
1046 | return strcasecmp(object_class_get_name((ObjectClass *)a), |
1047 | object_class_get_name((ObjectClass *)b)); |
1048 | } |
1049 | |
1050 | GSList *object_class_get_list_sorted(const char *implements_type, |
1051 | bool include_abstract) |
1052 | { |
1053 | return g_slist_sort(object_class_get_list(implements_type, include_abstract), |
1054 | object_class_cmp); |
1055 | } |
1056 | |
1057 | void object_ref(Object *obj) |
1058 | { |
1059 | if (!obj) { |
1060 | return; |
1061 | } |
1062 | atomic_inc(&obj->ref); |
1063 | } |
1064 | |
1065 | void object_unref(Object *obj) |
1066 | { |
1067 | if (!obj) { |
1068 | return; |
1069 | } |
1070 | g_assert(obj->ref > 0); |
1071 | |
1072 | /* parent always holds a reference to its children */ |
1073 | if (atomic_fetch_dec(&obj->ref) == 1) { |
1074 | object_finalize(obj); |
1075 | } |
1076 | } |
1077 | |
1078 | ObjectProperty * |
1079 | object_property_add(Object *obj, const char *name, const char *type, |
1080 | ObjectPropertyAccessor *get, |
1081 | ObjectPropertyAccessor *set, |
1082 | ObjectPropertyRelease *release, |
1083 | void *opaque, Error **errp) |
1084 | { |
1085 | ObjectProperty *prop; |
1086 | size_t name_len = strlen(name); |
1087 | |
1088 | if (name_len >= 3 && !memcmp(name + name_len - 3, "[*]" , 4)) { |
1089 | int i; |
1090 | ObjectProperty *ret; |
1091 | char *name_no_array = g_strdup(name); |
1092 | |
1093 | name_no_array[name_len - 3] = '\0'; |
1094 | for (i = 0; ; ++i) { |
1095 | char *full_name = g_strdup_printf("%s[%d]" , name_no_array, i); |
1096 | |
1097 | ret = object_property_add(obj, full_name, type, get, set, |
1098 | release, opaque, NULL); |
1099 | g_free(full_name); |
1100 | if (ret) { |
1101 | break; |
1102 | } |
1103 | } |
1104 | g_free(name_no_array); |
1105 | return ret; |
1106 | } |
1107 | |
1108 | if (object_property_find(obj, name, NULL) != NULL) { |
1109 | error_setg(errp, "attempt to add duplicate property '%s'" |
1110 | " to object (type '%s')" , name, |
1111 | object_get_typename(obj)); |
1112 | return NULL; |
1113 | } |
1114 | |
1115 | prop = g_malloc0(sizeof(*prop)); |
1116 | |
1117 | prop->name = g_strdup(name); |
1118 | prop->type = g_strdup(type); |
1119 | |
1120 | prop->get = get; |
1121 | prop->set = set; |
1122 | prop->release = release; |
1123 | prop->opaque = opaque; |
1124 | |
1125 | g_hash_table_insert(obj->properties, prop->name, prop); |
1126 | return prop; |
1127 | } |
1128 | |
1129 | ObjectProperty * |
1130 | object_class_property_add(ObjectClass *klass, |
1131 | const char *name, |
1132 | const char *type, |
1133 | ObjectPropertyAccessor *get, |
1134 | ObjectPropertyAccessor *set, |
1135 | ObjectPropertyRelease *release, |
1136 | void *opaque, |
1137 | Error **errp) |
1138 | { |
1139 | ObjectProperty *prop; |
1140 | |
1141 | if (object_class_property_find(klass, name, NULL) != NULL) { |
1142 | error_setg(errp, "attempt to add duplicate property '%s'" |
1143 | " to object (type '%s')" , name, |
1144 | object_class_get_name(klass)); |
1145 | return NULL; |
1146 | } |
1147 | |
1148 | prop = g_malloc0(sizeof(*prop)); |
1149 | |
1150 | prop->name = g_strdup(name); |
1151 | prop->type = g_strdup(type); |
1152 | |
1153 | prop->get = get; |
1154 | prop->set = set; |
1155 | prop->release = release; |
1156 | prop->opaque = opaque; |
1157 | |
1158 | g_hash_table_insert(klass->properties, g_strdup(name), prop); |
1159 | |
1160 | return prop; |
1161 | } |
1162 | |
1163 | ObjectProperty *object_property_find(Object *obj, const char *name, |
1164 | Error **errp) |
1165 | { |
1166 | ObjectProperty *prop; |
1167 | ObjectClass *klass = object_get_class(obj); |
1168 | |
1169 | prop = object_class_property_find(klass, name, NULL); |
1170 | if (prop) { |
1171 | return prop; |
1172 | } |
1173 | |
1174 | prop = g_hash_table_lookup(obj->properties, name); |
1175 | if (prop) { |
1176 | return prop; |
1177 | } |
1178 | |
1179 | error_setg(errp, "Property '.%s' not found" , name); |
1180 | return NULL; |
1181 | } |
1182 | |
1183 | void object_property_iter_init(ObjectPropertyIterator *iter, |
1184 | Object *obj) |
1185 | { |
1186 | g_hash_table_iter_init(&iter->iter, obj->properties); |
1187 | iter->nextclass = object_get_class(obj); |
1188 | } |
1189 | |
1190 | ObjectProperty *object_property_iter_next(ObjectPropertyIterator *iter) |
1191 | { |
1192 | gpointer key, val; |
1193 | while (!g_hash_table_iter_next(&iter->iter, &key, &val)) { |
1194 | if (!iter->nextclass) { |
1195 | return NULL; |
1196 | } |
1197 | g_hash_table_iter_init(&iter->iter, iter->nextclass->properties); |
1198 | iter->nextclass = object_class_get_parent(iter->nextclass); |
1199 | } |
1200 | return val; |
1201 | } |
1202 | |
1203 | void object_class_property_iter_init(ObjectPropertyIterator *iter, |
1204 | ObjectClass *klass) |
1205 | { |
1206 | g_hash_table_iter_init(&iter->iter, klass->properties); |
1207 | iter->nextclass = object_class_get_parent(klass); |
1208 | } |
1209 | |
1210 | ObjectProperty *object_class_property_find(ObjectClass *klass, const char *name, |
1211 | Error **errp) |
1212 | { |
1213 | ObjectProperty *prop; |
1214 | ObjectClass *parent_klass; |
1215 | |
1216 | parent_klass = object_class_get_parent(klass); |
1217 | if (parent_klass) { |
1218 | prop = object_class_property_find(parent_klass, name, NULL); |
1219 | if (prop) { |
1220 | return prop; |
1221 | } |
1222 | } |
1223 | |
1224 | prop = g_hash_table_lookup(klass->properties, name); |
1225 | if (!prop) { |
1226 | error_setg(errp, "Property '.%s' not found" , name); |
1227 | } |
1228 | return prop; |
1229 | } |
1230 | |
1231 | void object_property_del(Object *obj, const char *name, Error **errp) |
1232 | { |
1233 | ObjectProperty *prop = g_hash_table_lookup(obj->properties, name); |
1234 | |
1235 | if (!prop) { |
1236 | error_setg(errp, "Property '.%s' not found" , name); |
1237 | return; |
1238 | } |
1239 | |
1240 | if (prop->release) { |
1241 | prop->release(obj, name, prop->opaque); |
1242 | } |
1243 | g_hash_table_remove(obj->properties, name); |
1244 | } |
1245 | |
1246 | void object_property_get(Object *obj, Visitor *v, const char *name, |
1247 | Error **errp) |
1248 | { |
1249 | ObjectProperty *prop = object_property_find(obj, name, errp); |
1250 | if (prop == NULL) { |
1251 | return; |
1252 | } |
1253 | |
1254 | if (!prop->get) { |
1255 | error_setg(errp, QERR_PERMISSION_DENIED); |
1256 | } else { |
1257 | prop->get(obj, v, name, prop->opaque, errp); |
1258 | } |
1259 | } |
1260 | |
1261 | void object_property_set(Object *obj, Visitor *v, const char *name, |
1262 | Error **errp) |
1263 | { |
1264 | ObjectProperty *prop = object_property_find(obj, name, errp); |
1265 | if (prop == NULL) { |
1266 | return; |
1267 | } |
1268 | |
1269 | if (!prop->set) { |
1270 | error_setg(errp, QERR_PERMISSION_DENIED); |
1271 | } else { |
1272 | prop->set(obj, v, name, prop->opaque, errp); |
1273 | } |
1274 | } |
1275 | |
1276 | void object_property_set_str(Object *obj, const char *value, |
1277 | const char *name, Error **errp) |
1278 | { |
1279 | QString *qstr = qstring_from_str(value); |
1280 | object_property_set_qobject(obj, QOBJECT(qstr), name, errp); |
1281 | |
1282 | qobject_unref(qstr); |
1283 | } |
1284 | |
1285 | char *object_property_get_str(Object *obj, const char *name, |
1286 | Error **errp) |
1287 | { |
1288 | QObject *ret = object_property_get_qobject(obj, name, errp); |
1289 | char *retval; |
1290 | |
1291 | if (!ret) { |
1292 | return NULL; |
1293 | } |
1294 | |
1295 | retval = g_strdup(qobject_get_try_str(ret)); |
1296 | if (!retval) { |
1297 | error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "string" ); |
1298 | } |
1299 | |
1300 | qobject_unref(ret); |
1301 | return retval; |
1302 | } |
1303 | |
1304 | void object_property_set_link(Object *obj, Object *value, |
1305 | const char *name, Error **errp) |
1306 | { |
1307 | if (value) { |
1308 | gchar *path = object_get_canonical_path(value); |
1309 | object_property_set_str(obj, path, name, errp); |
1310 | g_free(path); |
1311 | } else { |
1312 | object_property_set_str(obj, "" , name, errp); |
1313 | } |
1314 | } |
1315 | |
1316 | Object *object_property_get_link(Object *obj, const char *name, |
1317 | Error **errp) |
1318 | { |
1319 | char *str = object_property_get_str(obj, name, errp); |
1320 | Object *target = NULL; |
1321 | |
1322 | if (str && *str) { |
1323 | target = object_resolve_path(str, NULL); |
1324 | if (!target) { |
1325 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1326 | "Device '%s' not found" , str); |
1327 | } |
1328 | } |
1329 | |
1330 | g_free(str); |
1331 | return target; |
1332 | } |
1333 | |
1334 | void object_property_set_bool(Object *obj, bool value, |
1335 | const char *name, Error **errp) |
1336 | { |
1337 | QBool *qbool = qbool_from_bool(value); |
1338 | object_property_set_qobject(obj, QOBJECT(qbool), name, errp); |
1339 | |
1340 | qobject_unref(qbool); |
1341 | } |
1342 | |
1343 | bool object_property_get_bool(Object *obj, const char *name, |
1344 | Error **errp) |
1345 | { |
1346 | QObject *ret = object_property_get_qobject(obj, name, errp); |
1347 | QBool *qbool; |
1348 | bool retval; |
1349 | |
1350 | if (!ret) { |
1351 | return false; |
1352 | } |
1353 | qbool = qobject_to(QBool, ret); |
1354 | if (!qbool) { |
1355 | error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "boolean" ); |
1356 | retval = false; |
1357 | } else { |
1358 | retval = qbool_get_bool(qbool); |
1359 | } |
1360 | |
1361 | qobject_unref(ret); |
1362 | return retval; |
1363 | } |
1364 | |
1365 | void object_property_set_int(Object *obj, int64_t value, |
1366 | const char *name, Error **errp) |
1367 | { |
1368 | QNum *qnum = qnum_from_int(value); |
1369 | object_property_set_qobject(obj, QOBJECT(qnum), name, errp); |
1370 | |
1371 | qobject_unref(qnum); |
1372 | } |
1373 | |
1374 | int64_t object_property_get_int(Object *obj, const char *name, |
1375 | Error **errp) |
1376 | { |
1377 | QObject *ret = object_property_get_qobject(obj, name, errp); |
1378 | QNum *qnum; |
1379 | int64_t retval; |
1380 | |
1381 | if (!ret) { |
1382 | return -1; |
1383 | } |
1384 | |
1385 | qnum = qobject_to(QNum, ret); |
1386 | if (!qnum || !qnum_get_try_int(qnum, &retval)) { |
1387 | error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "int" ); |
1388 | retval = -1; |
1389 | } |
1390 | |
1391 | qobject_unref(ret); |
1392 | return retval; |
1393 | } |
1394 | |
1395 | void object_property_set_uint(Object *obj, uint64_t value, |
1396 | const char *name, Error **errp) |
1397 | { |
1398 | QNum *qnum = qnum_from_uint(value); |
1399 | |
1400 | object_property_set_qobject(obj, QOBJECT(qnum), name, errp); |
1401 | qobject_unref(qnum); |
1402 | } |
1403 | |
1404 | uint64_t object_property_get_uint(Object *obj, const char *name, |
1405 | Error **errp) |
1406 | { |
1407 | QObject *ret = object_property_get_qobject(obj, name, errp); |
1408 | QNum *qnum; |
1409 | uint64_t retval; |
1410 | |
1411 | if (!ret) { |
1412 | return 0; |
1413 | } |
1414 | qnum = qobject_to(QNum, ret); |
1415 | if (!qnum || !qnum_get_try_uint(qnum, &retval)) { |
1416 | error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "uint" ); |
1417 | retval = 0; |
1418 | } |
1419 | |
1420 | qobject_unref(ret); |
1421 | return retval; |
1422 | } |
1423 | |
1424 | typedef struct EnumProperty { |
1425 | const QEnumLookup *lookup; |
1426 | int (*get)(Object *, Error **); |
1427 | void (*set)(Object *, int, Error **); |
1428 | } EnumProperty; |
1429 | |
1430 | int object_property_get_enum(Object *obj, const char *name, |
1431 | const char *typename, Error **errp) |
1432 | { |
1433 | Error *err = NULL; |
1434 | Visitor *v; |
1435 | char *str; |
1436 | int ret; |
1437 | ObjectProperty *prop = object_property_find(obj, name, errp); |
1438 | EnumProperty *enumprop; |
1439 | |
1440 | if (prop == NULL) { |
1441 | return 0; |
1442 | } |
1443 | |
1444 | if (!g_str_equal(prop->type, typename)) { |
1445 | error_setg(errp, "Property %s on %s is not '%s' enum type" , |
1446 | name, object_class_get_name( |
1447 | object_get_class(obj)), typename); |
1448 | return 0; |
1449 | } |
1450 | |
1451 | enumprop = prop->opaque; |
1452 | |
1453 | v = string_output_visitor_new(false, &str); |
1454 | object_property_get(obj, v, name, &err); |
1455 | if (err) { |
1456 | error_propagate(errp, err); |
1457 | visit_free(v); |
1458 | return 0; |
1459 | } |
1460 | visit_complete(v, &str); |
1461 | visit_free(v); |
1462 | v = string_input_visitor_new(str); |
1463 | visit_type_enum(v, name, &ret, enumprop->lookup, errp); |
1464 | |
1465 | g_free(str); |
1466 | visit_free(v); |
1467 | |
1468 | return ret; |
1469 | } |
1470 | |
1471 | void object_property_get_uint16List(Object *obj, const char *name, |
1472 | uint16List **list, Error **errp) |
1473 | { |
1474 | Error *err = NULL; |
1475 | Visitor *v; |
1476 | char *str; |
1477 | |
1478 | v = string_output_visitor_new(false, &str); |
1479 | object_property_get(obj, v, name, &err); |
1480 | if (err) { |
1481 | error_propagate(errp, err); |
1482 | goto out; |
1483 | } |
1484 | visit_complete(v, &str); |
1485 | visit_free(v); |
1486 | v = string_input_visitor_new(str); |
1487 | visit_type_uint16List(v, NULL, list, errp); |
1488 | |
1489 | g_free(str); |
1490 | out: |
1491 | visit_free(v); |
1492 | } |
1493 | |
1494 | void object_property_parse(Object *obj, const char *string, |
1495 | const char *name, Error **errp) |
1496 | { |
1497 | Visitor *v = string_input_visitor_new(string); |
1498 | object_property_set(obj, v, name, errp); |
1499 | visit_free(v); |
1500 | } |
1501 | |
1502 | char *object_property_print(Object *obj, const char *name, bool human, |
1503 | Error **errp) |
1504 | { |
1505 | Visitor *v; |
1506 | char *string = NULL; |
1507 | Error *local_err = NULL; |
1508 | |
1509 | v = string_output_visitor_new(human, &string); |
1510 | object_property_get(obj, v, name, &local_err); |
1511 | if (local_err) { |
1512 | error_propagate(errp, local_err); |
1513 | goto out; |
1514 | } |
1515 | |
1516 | visit_complete(v, &string); |
1517 | |
1518 | out: |
1519 | visit_free(v); |
1520 | return string; |
1521 | } |
1522 | |
1523 | const char *object_property_get_type(Object *obj, const char *name, Error **errp) |
1524 | { |
1525 | ObjectProperty *prop = object_property_find(obj, name, errp); |
1526 | if (prop == NULL) { |
1527 | return NULL; |
1528 | } |
1529 | |
1530 | return prop->type; |
1531 | } |
1532 | |
1533 | Object *object_get_root(void) |
1534 | { |
1535 | static Object *root; |
1536 | |
1537 | if (!root) { |
1538 | root = object_new("container" ); |
1539 | } |
1540 | |
1541 | return root; |
1542 | } |
1543 | |
1544 | Object *object_get_objects_root(void) |
1545 | { |
1546 | return container_get(object_get_root(), "/objects" ); |
1547 | } |
1548 | |
1549 | Object *object_get_internal_root(void) |
1550 | { |
1551 | static Object *internal_root; |
1552 | |
1553 | if (!internal_root) { |
1554 | internal_root = object_new("container" ); |
1555 | } |
1556 | |
1557 | return internal_root; |
1558 | } |
1559 | |
1560 | static void object_get_child_property(Object *obj, Visitor *v, |
1561 | const char *name, void *opaque, |
1562 | Error **errp) |
1563 | { |
1564 | Object *child = opaque; |
1565 | gchar *path; |
1566 | |
1567 | path = object_get_canonical_path(child); |
1568 | visit_type_str(v, name, &path, errp); |
1569 | g_free(path); |
1570 | } |
1571 | |
1572 | static Object *object_resolve_child_property(Object *parent, void *opaque, const gchar *part) |
1573 | { |
1574 | return opaque; |
1575 | } |
1576 | |
1577 | static void object_finalize_child_property(Object *obj, const char *name, |
1578 | void *opaque) |
1579 | { |
1580 | Object *child = opaque; |
1581 | |
1582 | if (child->class->unparent) { |
1583 | (child->class->unparent)(child); |
1584 | } |
1585 | child->parent = NULL; |
1586 | object_unref(child); |
1587 | } |
1588 | |
1589 | void object_property_add_child(Object *obj, const char *name, |
1590 | Object *child, Error **errp) |
1591 | { |
1592 | Error *local_err = NULL; |
1593 | gchar *type; |
1594 | ObjectProperty *op; |
1595 | |
1596 | if (child->parent != NULL) { |
1597 | error_setg(errp, "child object is already parented" ); |
1598 | return; |
1599 | } |
1600 | |
1601 | type = g_strdup_printf("child<%s>" , object_get_typename(OBJECT(child))); |
1602 | |
1603 | op = object_property_add(obj, name, type, object_get_child_property, NULL, |
1604 | object_finalize_child_property, child, &local_err); |
1605 | if (local_err) { |
1606 | error_propagate(errp, local_err); |
1607 | goto out; |
1608 | } |
1609 | |
1610 | op->resolve = object_resolve_child_property; |
1611 | object_ref(child); |
1612 | child->parent = obj; |
1613 | |
1614 | out: |
1615 | g_free(type); |
1616 | } |
1617 | |
1618 | void object_property_allow_set_link(const Object *obj, const char *name, |
1619 | Object *val, Error **errp) |
1620 | { |
1621 | /* Allow the link to be set, always */ |
1622 | } |
1623 | |
1624 | typedef struct { |
1625 | Object **child; |
1626 | void (*check)(const Object *, const char *, Object *, Error **); |
1627 | ObjectPropertyLinkFlags flags; |
1628 | } LinkProperty; |
1629 | |
1630 | static void object_get_link_property(Object *obj, Visitor *v, |
1631 | const char *name, void *opaque, |
1632 | Error **errp) |
1633 | { |
1634 | LinkProperty *lprop = opaque; |
1635 | Object **child = lprop->child; |
1636 | gchar *path; |
1637 | |
1638 | if (*child) { |
1639 | path = object_get_canonical_path(*child); |
1640 | visit_type_str(v, name, &path, errp); |
1641 | g_free(path); |
1642 | } else { |
1643 | path = (gchar *)"" ; |
1644 | visit_type_str(v, name, &path, errp); |
1645 | } |
1646 | } |
1647 | |
1648 | /* |
1649 | * object_resolve_link: |
1650 | * |
1651 | * Lookup an object and ensure its type matches the link property type. This |
1652 | * is similar to object_resolve_path() except type verification against the |
1653 | * link property is performed. |
1654 | * |
1655 | * Returns: The matched object or NULL on path lookup failures. |
1656 | */ |
1657 | static Object *object_resolve_link(Object *obj, const char *name, |
1658 | const char *path, Error **errp) |
1659 | { |
1660 | const char *type; |
1661 | gchar *target_type; |
1662 | bool ambiguous = false; |
1663 | Object *target; |
1664 | |
1665 | /* Go from link<FOO> to FOO. */ |
1666 | type = object_property_get_type(obj, name, NULL); |
1667 | target_type = g_strndup(&type[5], strlen(type) - 6); |
1668 | target = object_resolve_path_type(path, target_type, &ambiguous); |
1669 | |
1670 | if (ambiguous) { |
1671 | error_setg(errp, "Path '%s' does not uniquely identify an object" , |
1672 | path); |
1673 | } else if (!target) { |
1674 | target = object_resolve_path(path, &ambiguous); |
1675 | if (target || ambiguous) { |
1676 | error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, target_type); |
1677 | } else { |
1678 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1679 | "Device '%s' not found" , path); |
1680 | } |
1681 | target = NULL; |
1682 | } |
1683 | g_free(target_type); |
1684 | |
1685 | return target; |
1686 | } |
1687 | |
1688 | static void object_set_link_property(Object *obj, Visitor *v, |
1689 | const char *name, void *opaque, |
1690 | Error **errp) |
1691 | { |
1692 | Error *local_err = NULL; |
1693 | LinkProperty *prop = opaque; |
1694 | Object **child = prop->child; |
1695 | Object *old_target = *child; |
1696 | Object *new_target = NULL; |
1697 | char *path = NULL; |
1698 | |
1699 | visit_type_str(v, name, &path, &local_err); |
1700 | |
1701 | if (!local_err && strcmp(path, "" ) != 0) { |
1702 | new_target = object_resolve_link(obj, name, path, &local_err); |
1703 | } |
1704 | |
1705 | g_free(path); |
1706 | if (local_err) { |
1707 | error_propagate(errp, local_err); |
1708 | return; |
1709 | } |
1710 | |
1711 | prop->check(obj, name, new_target, &local_err); |
1712 | if (local_err) { |
1713 | error_propagate(errp, local_err); |
1714 | return; |
1715 | } |
1716 | |
1717 | *child = new_target; |
1718 | if (prop->flags == OBJ_PROP_LINK_STRONG) { |
1719 | object_ref(new_target); |
1720 | object_unref(old_target); |
1721 | } |
1722 | } |
1723 | |
1724 | static Object *object_resolve_link_property(Object *parent, void *opaque, const gchar *part) |
1725 | { |
1726 | LinkProperty *lprop = opaque; |
1727 | |
1728 | return *lprop->child; |
1729 | } |
1730 | |
1731 | static void object_release_link_property(Object *obj, const char *name, |
1732 | void *opaque) |
1733 | { |
1734 | LinkProperty *prop = opaque; |
1735 | |
1736 | if ((prop->flags & OBJ_PROP_LINK_STRONG) && *prop->child) { |
1737 | object_unref(*prop->child); |
1738 | } |
1739 | g_free(prop); |
1740 | } |
1741 | |
1742 | void object_property_add_link(Object *obj, const char *name, |
1743 | const char *type, Object **child, |
1744 | void (*check)(const Object *, const char *, |
1745 | Object *, Error **), |
1746 | ObjectPropertyLinkFlags flags, |
1747 | Error **errp) |
1748 | { |
1749 | Error *local_err = NULL; |
1750 | LinkProperty *prop = g_malloc(sizeof(*prop)); |
1751 | gchar *full_type; |
1752 | ObjectProperty *op; |
1753 | |
1754 | prop->child = child; |
1755 | prop->check = check; |
1756 | prop->flags = flags; |
1757 | |
1758 | full_type = g_strdup_printf("link<%s>" , type); |
1759 | |
1760 | op = object_property_add(obj, name, full_type, |
1761 | object_get_link_property, |
1762 | check ? object_set_link_property : NULL, |
1763 | object_release_link_property, |
1764 | prop, |
1765 | &local_err); |
1766 | if (local_err) { |
1767 | error_propagate(errp, local_err); |
1768 | g_free(prop); |
1769 | goto out; |
1770 | } |
1771 | |
1772 | op->resolve = object_resolve_link_property; |
1773 | |
1774 | out: |
1775 | g_free(full_type); |
1776 | } |
1777 | |
1778 | void object_property_add_const_link(Object *obj, const char *name, |
1779 | Object *target, Error **errp) |
1780 | { |
1781 | char *link_type; |
1782 | ObjectProperty *op; |
1783 | |
1784 | link_type = g_strdup_printf("link<%s>" , object_get_typename(target)); |
1785 | op = object_property_add(obj, name, link_type, |
1786 | object_get_child_property, NULL, |
1787 | NULL, target, errp); |
1788 | if (op != NULL) { |
1789 | op->resolve = object_resolve_child_property; |
1790 | } |
1791 | g_free(link_type); |
1792 | } |
1793 | |
1794 | gchar *object_get_canonical_path_component(Object *obj) |
1795 | { |
1796 | ObjectProperty *prop = NULL; |
1797 | GHashTableIter iter; |
1798 | |
1799 | if (obj->parent == NULL) { |
1800 | return NULL; |
1801 | } |
1802 | |
1803 | g_hash_table_iter_init(&iter, obj->parent->properties); |
1804 | while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) { |
1805 | if (!object_property_is_child(prop)) { |
1806 | continue; |
1807 | } |
1808 | |
1809 | if (prop->opaque == obj) { |
1810 | return g_strdup(prop->name); |
1811 | } |
1812 | } |
1813 | |
1814 | /* obj had a parent but was not a child, should never happen */ |
1815 | g_assert_not_reached(); |
1816 | return NULL; |
1817 | } |
1818 | |
1819 | gchar *object_get_canonical_path(Object *obj) |
1820 | { |
1821 | Object *root = object_get_root(); |
1822 | char *newpath, *path = NULL; |
1823 | |
1824 | if (obj == root) { |
1825 | return g_strdup("/" ); |
1826 | } |
1827 | |
1828 | do { |
1829 | char *component = object_get_canonical_path_component(obj); |
1830 | |
1831 | if (!component) { |
1832 | /* A canonical path must be complete, so discard what was |
1833 | * collected so far. |
1834 | */ |
1835 | g_free(path); |
1836 | return NULL; |
1837 | } |
1838 | |
1839 | newpath = g_strdup_printf("/%s%s" , component, path ? path : "" ); |
1840 | g_free(path); |
1841 | g_free(component); |
1842 | path = newpath; |
1843 | obj = obj->parent; |
1844 | } while (obj != root); |
1845 | |
1846 | return path; |
1847 | } |
1848 | |
1849 | Object *object_resolve_path_component(Object *parent, const gchar *part) |
1850 | { |
1851 | ObjectProperty *prop = object_property_find(parent, part, NULL); |
1852 | if (prop == NULL) { |
1853 | return NULL; |
1854 | } |
1855 | |
1856 | if (prop->resolve) { |
1857 | return prop->resolve(parent, prop->opaque, part); |
1858 | } else { |
1859 | return NULL; |
1860 | } |
1861 | } |
1862 | |
1863 | static Object *object_resolve_abs_path(Object *parent, |
1864 | gchar **parts, |
1865 | const char *typename, |
1866 | int index) |
1867 | { |
1868 | Object *child; |
1869 | |
1870 | if (parts[index] == NULL) { |
1871 | return object_dynamic_cast(parent, typename); |
1872 | } |
1873 | |
1874 | if (strcmp(parts[index], "" ) == 0) { |
1875 | return object_resolve_abs_path(parent, parts, typename, index + 1); |
1876 | } |
1877 | |
1878 | child = object_resolve_path_component(parent, parts[index]); |
1879 | if (!child) { |
1880 | return NULL; |
1881 | } |
1882 | |
1883 | return object_resolve_abs_path(child, parts, typename, index + 1); |
1884 | } |
1885 | |
1886 | static Object *object_resolve_partial_path(Object *parent, |
1887 | gchar **parts, |
1888 | const char *typename, |
1889 | bool *ambiguous) |
1890 | { |
1891 | Object *obj; |
1892 | GHashTableIter iter; |
1893 | ObjectProperty *prop; |
1894 | |
1895 | obj = object_resolve_abs_path(parent, parts, typename, 0); |
1896 | |
1897 | g_hash_table_iter_init(&iter, parent->properties); |
1898 | while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) { |
1899 | Object *found; |
1900 | |
1901 | if (!object_property_is_child(prop)) { |
1902 | continue; |
1903 | } |
1904 | |
1905 | found = object_resolve_partial_path(prop->opaque, parts, |
1906 | typename, ambiguous); |
1907 | if (found) { |
1908 | if (obj) { |
1909 | *ambiguous = true; |
1910 | return NULL; |
1911 | } |
1912 | obj = found; |
1913 | } |
1914 | |
1915 | if (*ambiguous) { |
1916 | return NULL; |
1917 | } |
1918 | } |
1919 | |
1920 | return obj; |
1921 | } |
1922 | |
1923 | Object *object_resolve_path_type(const char *path, const char *typename, |
1924 | bool *ambiguousp) |
1925 | { |
1926 | Object *obj; |
1927 | gchar **parts; |
1928 | |
1929 | parts = g_strsplit(path, "/" , 0); |
1930 | assert(parts); |
1931 | |
1932 | if (parts[0] == NULL || strcmp(parts[0], "" ) != 0) { |
1933 | bool ambiguous = false; |
1934 | obj = object_resolve_partial_path(object_get_root(), parts, |
1935 | typename, &ambiguous); |
1936 | if (ambiguousp) { |
1937 | *ambiguousp = ambiguous; |
1938 | } |
1939 | } else { |
1940 | obj = object_resolve_abs_path(object_get_root(), parts, typename, 1); |
1941 | } |
1942 | |
1943 | g_strfreev(parts); |
1944 | |
1945 | return obj; |
1946 | } |
1947 | |
1948 | Object *object_resolve_path(const char *path, bool *ambiguous) |
1949 | { |
1950 | return object_resolve_path_type(path, TYPE_OBJECT, ambiguous); |
1951 | } |
1952 | |
1953 | typedef struct StringProperty |
1954 | { |
1955 | char *(*get)(Object *, Error **); |
1956 | void (*set)(Object *, const char *, Error **); |
1957 | } StringProperty; |
1958 | |
1959 | static void property_get_str(Object *obj, Visitor *v, const char *name, |
1960 | void *opaque, Error **errp) |
1961 | { |
1962 | StringProperty *prop = opaque; |
1963 | char *value; |
1964 | Error *err = NULL; |
1965 | |
1966 | value = prop->get(obj, &err); |
1967 | if (err) { |
1968 | error_propagate(errp, err); |
1969 | return; |
1970 | } |
1971 | |
1972 | visit_type_str(v, name, &value, errp); |
1973 | g_free(value); |
1974 | } |
1975 | |
1976 | static void property_set_str(Object *obj, Visitor *v, const char *name, |
1977 | void *opaque, Error **errp) |
1978 | { |
1979 | StringProperty *prop = opaque; |
1980 | char *value; |
1981 | Error *local_err = NULL; |
1982 | |
1983 | visit_type_str(v, name, &value, &local_err); |
1984 | if (local_err) { |
1985 | error_propagate(errp, local_err); |
1986 | return; |
1987 | } |
1988 | |
1989 | prop->set(obj, value, errp); |
1990 | g_free(value); |
1991 | } |
1992 | |
1993 | static void property_release_str(Object *obj, const char *name, |
1994 | void *opaque) |
1995 | { |
1996 | StringProperty *prop = opaque; |
1997 | g_free(prop); |
1998 | } |
1999 | |
2000 | void object_property_add_str(Object *obj, const char *name, |
2001 | char *(*get)(Object *, Error **), |
2002 | void (*set)(Object *, const char *, Error **), |
2003 | Error **errp) |
2004 | { |
2005 | Error *local_err = NULL; |
2006 | StringProperty *prop = g_malloc0(sizeof(*prop)); |
2007 | |
2008 | prop->get = get; |
2009 | prop->set = set; |
2010 | |
2011 | object_property_add(obj, name, "string" , |
2012 | get ? property_get_str : NULL, |
2013 | set ? property_set_str : NULL, |
2014 | property_release_str, |
2015 | prop, &local_err); |
2016 | if (local_err) { |
2017 | error_propagate(errp, local_err); |
2018 | g_free(prop); |
2019 | } |
2020 | } |
2021 | |
2022 | void object_class_property_add_str(ObjectClass *klass, const char *name, |
2023 | char *(*get)(Object *, Error **), |
2024 | void (*set)(Object *, const char *, |
2025 | Error **), |
2026 | Error **errp) |
2027 | { |
2028 | Error *local_err = NULL; |
2029 | StringProperty *prop = g_malloc0(sizeof(*prop)); |
2030 | |
2031 | prop->get = get; |
2032 | prop->set = set; |
2033 | |
2034 | object_class_property_add(klass, name, "string" , |
2035 | get ? property_get_str : NULL, |
2036 | set ? property_set_str : NULL, |
2037 | property_release_str, |
2038 | prop, &local_err); |
2039 | if (local_err) { |
2040 | error_propagate(errp, local_err); |
2041 | g_free(prop); |
2042 | } |
2043 | } |
2044 | |
2045 | typedef struct BoolProperty |
2046 | { |
2047 | bool (*get)(Object *, Error **); |
2048 | void (*set)(Object *, bool, Error **); |
2049 | } BoolProperty; |
2050 | |
2051 | static void property_get_bool(Object *obj, Visitor *v, const char *name, |
2052 | void *opaque, Error **errp) |
2053 | { |
2054 | BoolProperty *prop = opaque; |
2055 | bool value; |
2056 | Error *err = NULL; |
2057 | |
2058 | value = prop->get(obj, &err); |
2059 | if (err) { |
2060 | error_propagate(errp, err); |
2061 | return; |
2062 | } |
2063 | |
2064 | visit_type_bool(v, name, &value, errp); |
2065 | } |
2066 | |
2067 | static void property_set_bool(Object *obj, Visitor *v, const char *name, |
2068 | void *opaque, Error **errp) |
2069 | { |
2070 | BoolProperty *prop = opaque; |
2071 | bool value; |
2072 | Error *local_err = NULL; |
2073 | |
2074 | visit_type_bool(v, name, &value, &local_err); |
2075 | if (local_err) { |
2076 | error_propagate(errp, local_err); |
2077 | return; |
2078 | } |
2079 | |
2080 | prop->set(obj, value, errp); |
2081 | } |
2082 | |
2083 | static void property_release_bool(Object *obj, const char *name, |
2084 | void *opaque) |
2085 | { |
2086 | BoolProperty *prop = opaque; |
2087 | g_free(prop); |
2088 | } |
2089 | |
2090 | void object_property_add_bool(Object *obj, const char *name, |
2091 | bool (*get)(Object *, Error **), |
2092 | void (*set)(Object *, bool, Error **), |
2093 | Error **errp) |
2094 | { |
2095 | Error *local_err = NULL; |
2096 | BoolProperty *prop = g_malloc0(sizeof(*prop)); |
2097 | |
2098 | prop->get = get; |
2099 | prop->set = set; |
2100 | |
2101 | object_property_add(obj, name, "bool" , |
2102 | get ? property_get_bool : NULL, |
2103 | set ? property_set_bool : NULL, |
2104 | property_release_bool, |
2105 | prop, &local_err); |
2106 | if (local_err) { |
2107 | error_propagate(errp, local_err); |
2108 | g_free(prop); |
2109 | } |
2110 | } |
2111 | |
2112 | void object_class_property_add_bool(ObjectClass *klass, const char *name, |
2113 | bool (*get)(Object *, Error **), |
2114 | void (*set)(Object *, bool, Error **), |
2115 | Error **errp) |
2116 | { |
2117 | Error *local_err = NULL; |
2118 | BoolProperty *prop = g_malloc0(sizeof(*prop)); |
2119 | |
2120 | prop->get = get; |
2121 | prop->set = set; |
2122 | |
2123 | object_class_property_add(klass, name, "bool" , |
2124 | get ? property_get_bool : NULL, |
2125 | set ? property_set_bool : NULL, |
2126 | property_release_bool, |
2127 | prop, &local_err); |
2128 | if (local_err) { |
2129 | error_propagate(errp, local_err); |
2130 | g_free(prop); |
2131 | } |
2132 | } |
2133 | |
2134 | static void property_get_enum(Object *obj, Visitor *v, const char *name, |
2135 | void *opaque, Error **errp) |
2136 | { |
2137 | EnumProperty *prop = opaque; |
2138 | int value; |
2139 | Error *err = NULL; |
2140 | |
2141 | value = prop->get(obj, &err); |
2142 | if (err) { |
2143 | error_propagate(errp, err); |
2144 | return; |
2145 | } |
2146 | |
2147 | visit_type_enum(v, name, &value, prop->lookup, errp); |
2148 | } |
2149 | |
2150 | static void property_set_enum(Object *obj, Visitor *v, const char *name, |
2151 | void *opaque, Error **errp) |
2152 | { |
2153 | EnumProperty *prop = opaque; |
2154 | int value; |
2155 | Error *err = NULL; |
2156 | |
2157 | visit_type_enum(v, name, &value, prop->lookup, &err); |
2158 | if (err) { |
2159 | error_propagate(errp, err); |
2160 | return; |
2161 | } |
2162 | prop->set(obj, value, errp); |
2163 | } |
2164 | |
2165 | static void property_release_enum(Object *obj, const char *name, |
2166 | void *opaque) |
2167 | { |
2168 | EnumProperty *prop = opaque; |
2169 | g_free(prop); |
2170 | } |
2171 | |
2172 | void object_property_add_enum(Object *obj, const char *name, |
2173 | const char *typename, |
2174 | const QEnumLookup *lookup, |
2175 | int (*get)(Object *, Error **), |
2176 | void (*set)(Object *, int, Error **), |
2177 | Error **errp) |
2178 | { |
2179 | Error *local_err = NULL; |
2180 | EnumProperty *prop = g_malloc(sizeof(*prop)); |
2181 | |
2182 | prop->lookup = lookup; |
2183 | prop->get = get; |
2184 | prop->set = set; |
2185 | |
2186 | object_property_add(obj, name, typename, |
2187 | get ? property_get_enum : NULL, |
2188 | set ? property_set_enum : NULL, |
2189 | property_release_enum, |
2190 | prop, &local_err); |
2191 | if (local_err) { |
2192 | error_propagate(errp, local_err); |
2193 | g_free(prop); |
2194 | } |
2195 | } |
2196 | |
2197 | void object_class_property_add_enum(ObjectClass *klass, const char *name, |
2198 | const char *typename, |
2199 | const QEnumLookup *lookup, |
2200 | int (*get)(Object *, Error **), |
2201 | void (*set)(Object *, int, Error **), |
2202 | Error **errp) |
2203 | { |
2204 | Error *local_err = NULL; |
2205 | EnumProperty *prop = g_malloc(sizeof(*prop)); |
2206 | |
2207 | prop->lookup = lookup; |
2208 | prop->get = get; |
2209 | prop->set = set; |
2210 | |
2211 | object_class_property_add(klass, name, typename, |
2212 | get ? property_get_enum : NULL, |
2213 | set ? property_set_enum : NULL, |
2214 | property_release_enum, |
2215 | prop, &local_err); |
2216 | if (local_err) { |
2217 | error_propagate(errp, local_err); |
2218 | g_free(prop); |
2219 | } |
2220 | } |
2221 | |
2222 | typedef struct TMProperty { |
2223 | void (*get)(Object *, struct tm *, Error **); |
2224 | } TMProperty; |
2225 | |
2226 | static void property_get_tm(Object *obj, Visitor *v, const char *name, |
2227 | void *opaque, Error **errp) |
2228 | { |
2229 | TMProperty *prop = opaque; |
2230 | Error *err = NULL; |
2231 | struct tm value; |
2232 | |
2233 | prop->get(obj, &value, &err); |
2234 | if (err) { |
2235 | goto out; |
2236 | } |
2237 | |
2238 | visit_start_struct(v, name, NULL, 0, &err); |
2239 | if (err) { |
2240 | goto out; |
2241 | } |
2242 | visit_type_int32(v, "tm_year" , &value.tm_year, &err); |
2243 | if (err) { |
2244 | goto out_end; |
2245 | } |
2246 | visit_type_int32(v, "tm_mon" , &value.tm_mon, &err); |
2247 | if (err) { |
2248 | goto out_end; |
2249 | } |
2250 | visit_type_int32(v, "tm_mday" , &value.tm_mday, &err); |
2251 | if (err) { |
2252 | goto out_end; |
2253 | } |
2254 | visit_type_int32(v, "tm_hour" , &value.tm_hour, &err); |
2255 | if (err) { |
2256 | goto out_end; |
2257 | } |
2258 | visit_type_int32(v, "tm_min" , &value.tm_min, &err); |
2259 | if (err) { |
2260 | goto out_end; |
2261 | } |
2262 | visit_type_int32(v, "tm_sec" , &value.tm_sec, &err); |
2263 | if (err) { |
2264 | goto out_end; |
2265 | } |
2266 | visit_check_struct(v, &err); |
2267 | out_end: |
2268 | visit_end_struct(v, NULL); |
2269 | out: |
2270 | error_propagate(errp, err); |
2271 | |
2272 | } |
2273 | |
2274 | static void property_release_tm(Object *obj, const char *name, |
2275 | void *opaque) |
2276 | { |
2277 | TMProperty *prop = opaque; |
2278 | g_free(prop); |
2279 | } |
2280 | |
2281 | void object_property_add_tm(Object *obj, const char *name, |
2282 | void (*get)(Object *, struct tm *, Error **), |
2283 | Error **errp) |
2284 | { |
2285 | Error *local_err = NULL; |
2286 | TMProperty *prop = g_malloc0(sizeof(*prop)); |
2287 | |
2288 | prop->get = get; |
2289 | |
2290 | object_property_add(obj, name, "struct tm" , |
2291 | get ? property_get_tm : NULL, NULL, |
2292 | property_release_tm, |
2293 | prop, &local_err); |
2294 | if (local_err) { |
2295 | error_propagate(errp, local_err); |
2296 | g_free(prop); |
2297 | } |
2298 | } |
2299 | |
2300 | void object_class_property_add_tm(ObjectClass *klass, const char *name, |
2301 | void (*get)(Object *, struct tm *, Error **), |
2302 | Error **errp) |
2303 | { |
2304 | Error *local_err = NULL; |
2305 | TMProperty *prop = g_malloc0(sizeof(*prop)); |
2306 | |
2307 | prop->get = get; |
2308 | |
2309 | object_class_property_add(klass, name, "struct tm" , |
2310 | get ? property_get_tm : NULL, NULL, |
2311 | property_release_tm, |
2312 | prop, &local_err); |
2313 | if (local_err) { |
2314 | error_propagate(errp, local_err); |
2315 | g_free(prop); |
2316 | } |
2317 | } |
2318 | |
2319 | static char *qdev_get_type(Object *obj, Error **errp) |
2320 | { |
2321 | return g_strdup(object_get_typename(obj)); |
2322 | } |
2323 | |
2324 | static void property_get_uint8_ptr(Object *obj, Visitor *v, const char *name, |
2325 | void *opaque, Error **errp) |
2326 | { |
2327 | uint8_t value = *(uint8_t *)opaque; |
2328 | visit_type_uint8(v, name, &value, errp); |
2329 | } |
2330 | |
2331 | static void property_get_uint16_ptr(Object *obj, Visitor *v, const char *name, |
2332 | void *opaque, Error **errp) |
2333 | { |
2334 | uint16_t value = *(uint16_t *)opaque; |
2335 | visit_type_uint16(v, name, &value, errp); |
2336 | } |
2337 | |
2338 | static void property_get_uint32_ptr(Object *obj, Visitor *v, const char *name, |
2339 | void *opaque, Error **errp) |
2340 | { |
2341 | uint32_t value = *(uint32_t *)opaque; |
2342 | visit_type_uint32(v, name, &value, errp); |
2343 | } |
2344 | |
2345 | static void property_get_uint64_ptr(Object *obj, Visitor *v, const char *name, |
2346 | void *opaque, Error **errp) |
2347 | { |
2348 | uint64_t value = *(uint64_t *)opaque; |
2349 | visit_type_uint64(v, name, &value, errp); |
2350 | } |
2351 | |
2352 | void object_property_add_uint8_ptr(Object *obj, const char *name, |
2353 | const uint8_t *v, Error **errp) |
2354 | { |
2355 | object_property_add(obj, name, "uint8" , property_get_uint8_ptr, |
2356 | NULL, NULL, (void *)v, errp); |
2357 | } |
2358 | |
2359 | void object_class_property_add_uint8_ptr(ObjectClass *klass, const char *name, |
2360 | const uint8_t *v, Error **errp) |
2361 | { |
2362 | object_class_property_add(klass, name, "uint8" , property_get_uint8_ptr, |
2363 | NULL, NULL, (void *)v, errp); |
2364 | } |
2365 | |
2366 | void object_property_add_uint16_ptr(Object *obj, const char *name, |
2367 | const uint16_t *v, Error **errp) |
2368 | { |
2369 | object_property_add(obj, name, "uint16" , property_get_uint16_ptr, |
2370 | NULL, NULL, (void *)v, errp); |
2371 | } |
2372 | |
2373 | void object_class_property_add_uint16_ptr(ObjectClass *klass, const char *name, |
2374 | const uint16_t *v, Error **errp) |
2375 | { |
2376 | object_class_property_add(klass, name, "uint16" , property_get_uint16_ptr, |
2377 | NULL, NULL, (void *)v, errp); |
2378 | } |
2379 | |
2380 | void object_property_add_uint32_ptr(Object *obj, const char *name, |
2381 | const uint32_t *v, Error **errp) |
2382 | { |
2383 | object_property_add(obj, name, "uint32" , property_get_uint32_ptr, |
2384 | NULL, NULL, (void *)v, errp); |
2385 | } |
2386 | |
2387 | void object_class_property_add_uint32_ptr(ObjectClass *klass, const char *name, |
2388 | const uint32_t *v, Error **errp) |
2389 | { |
2390 | object_class_property_add(klass, name, "uint32" , property_get_uint32_ptr, |
2391 | NULL, NULL, (void *)v, errp); |
2392 | } |
2393 | |
2394 | void object_property_add_uint64_ptr(Object *obj, const char *name, |
2395 | const uint64_t *v, Error **errp) |
2396 | { |
2397 | object_property_add(obj, name, "uint64" , property_get_uint64_ptr, |
2398 | NULL, NULL, (void *)v, errp); |
2399 | } |
2400 | |
2401 | void object_class_property_add_uint64_ptr(ObjectClass *klass, const char *name, |
2402 | const uint64_t *v, Error **errp) |
2403 | { |
2404 | object_class_property_add(klass, name, "uint64" , property_get_uint64_ptr, |
2405 | NULL, NULL, (void *)v, errp); |
2406 | } |
2407 | |
2408 | typedef struct { |
2409 | Object *target_obj; |
2410 | char *target_name; |
2411 | } AliasProperty; |
2412 | |
2413 | static void property_get_alias(Object *obj, Visitor *v, const char *name, |
2414 | void *opaque, Error **errp) |
2415 | { |
2416 | AliasProperty *prop = opaque; |
2417 | |
2418 | object_property_get(prop->target_obj, v, prop->target_name, errp); |
2419 | } |
2420 | |
2421 | static void property_set_alias(Object *obj, Visitor *v, const char *name, |
2422 | void *opaque, Error **errp) |
2423 | { |
2424 | AliasProperty *prop = opaque; |
2425 | |
2426 | object_property_set(prop->target_obj, v, prop->target_name, errp); |
2427 | } |
2428 | |
2429 | static Object *property_resolve_alias(Object *obj, void *opaque, |
2430 | const gchar *part) |
2431 | { |
2432 | AliasProperty *prop = opaque; |
2433 | |
2434 | return object_resolve_path_component(prop->target_obj, prop->target_name); |
2435 | } |
2436 | |
2437 | static void property_release_alias(Object *obj, const char *name, void *opaque) |
2438 | { |
2439 | AliasProperty *prop = opaque; |
2440 | |
2441 | g_free(prop->target_name); |
2442 | g_free(prop); |
2443 | } |
2444 | |
2445 | void object_property_add_alias(Object *obj, const char *name, |
2446 | Object *target_obj, const char *target_name, |
2447 | Error **errp) |
2448 | { |
2449 | AliasProperty *prop; |
2450 | ObjectProperty *op; |
2451 | ObjectProperty *target_prop; |
2452 | gchar *prop_type; |
2453 | Error *local_err = NULL; |
2454 | |
2455 | target_prop = object_property_find(target_obj, target_name, errp); |
2456 | if (!target_prop) { |
2457 | return; |
2458 | } |
2459 | |
2460 | if (object_property_is_child(target_prop)) { |
2461 | prop_type = g_strdup_printf("link%s" , |
2462 | target_prop->type + strlen("child" )); |
2463 | } else { |
2464 | prop_type = g_strdup(target_prop->type); |
2465 | } |
2466 | |
2467 | prop = g_malloc(sizeof(*prop)); |
2468 | prop->target_obj = target_obj; |
2469 | prop->target_name = g_strdup(target_name); |
2470 | |
2471 | op = object_property_add(obj, name, prop_type, |
2472 | property_get_alias, |
2473 | property_set_alias, |
2474 | property_release_alias, |
2475 | prop, &local_err); |
2476 | if (local_err) { |
2477 | error_propagate(errp, local_err); |
2478 | g_free(prop); |
2479 | goto out; |
2480 | } |
2481 | op->resolve = property_resolve_alias; |
2482 | |
2483 | object_property_set_description(obj, op->name, |
2484 | target_prop->description, |
2485 | &error_abort); |
2486 | |
2487 | out: |
2488 | g_free(prop_type); |
2489 | } |
2490 | |
2491 | void object_property_set_description(Object *obj, const char *name, |
2492 | const char *description, Error **errp) |
2493 | { |
2494 | ObjectProperty *op; |
2495 | |
2496 | op = object_property_find(obj, name, errp); |
2497 | if (!op) { |
2498 | return; |
2499 | } |
2500 | |
2501 | g_free(op->description); |
2502 | op->description = g_strdup(description); |
2503 | } |
2504 | |
2505 | void object_class_property_set_description(ObjectClass *klass, |
2506 | const char *name, |
2507 | const char *description, |
2508 | Error **errp) |
2509 | { |
2510 | ObjectProperty *op; |
2511 | |
2512 | op = g_hash_table_lookup(klass->properties, name); |
2513 | if (!op) { |
2514 | error_setg(errp, "Property '.%s' not found" , name); |
2515 | return; |
2516 | } |
2517 | |
2518 | g_free(op->description); |
2519 | op->description = g_strdup(description); |
2520 | } |
2521 | |
2522 | static void object_class_init(ObjectClass *klass, void *data) |
2523 | { |
2524 | object_class_property_add_str(klass, "type" , qdev_get_type, |
2525 | NULL, &error_abort); |
2526 | } |
2527 | |
2528 | static void register_types(void) |
2529 | { |
2530 | static TypeInfo interface_info = { |
2531 | .name = TYPE_INTERFACE, |
2532 | .class_size = sizeof(InterfaceClass), |
2533 | .abstract = true, |
2534 | }; |
2535 | |
2536 | static TypeInfo object_info = { |
2537 | .name = TYPE_OBJECT, |
2538 | .instance_size = sizeof(Object), |
2539 | .class_init = object_class_init, |
2540 | .abstract = true, |
2541 | }; |
2542 | |
2543 | type_interface = type_register_internal(&interface_info); |
2544 | type_register_internal(&object_info); |
2545 | } |
2546 | |
2547 | type_init(register_types) |
2548 | |