hw/sd/sdhci: Let sdhci_update_irq() return if IRQ was delivered
[qemu.git] / qom / object.c
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/qobject-input-visitor.h"
23 #include "qapi/qapi-builtin-visit.h"
24 #include "qapi/qmp/qerror.h"
25 #include "qapi/qmp/qjson.h"
26 #include "trace.h"
27
28 /* TODO: replace QObject with a simpler visitor to avoid a dependency
29 * of the QOM core on QObject? */
30 #include "qom/qom-qobject.h"
31 #include "qapi/qmp/qbool.h"
32 #include "qapi/qmp/qnum.h"
33 #include "qapi/qmp/qstring.h"
34 #include "qemu/error-report.h"
35
36 #define MAX_INTERFACES 32
37
38 typedef struct InterfaceImpl InterfaceImpl;
39 typedef struct TypeImpl TypeImpl;
40
41 struct InterfaceImpl
42 {
43 const char *typename;
44 };
45
46 struct TypeImpl
47 {
48 const char *name;
49
50 size_t class_size;
51
52 size_t instance_size;
53 size_t instance_align;
54
55 void (*class_init)(ObjectClass *klass, void *data);
56 void (*class_base_init)(ObjectClass *klass, void *data);
57
58 void *class_data;
59
60 void (*instance_init)(Object *obj);
61 void (*instance_post_init)(Object *obj);
62 void (*instance_finalize)(Object *obj);
63
64 bool abstract;
65
66 const char *parent;
67 TypeImpl *parent_type;
68
69 ObjectClass *class;
70
71 int num_interfaces;
72 InterfaceImpl interfaces[MAX_INTERFACES];
73 };
74
75 static Type type_interface;
76
77 static GHashTable *type_table_get(void)
78 {
79 static GHashTable *type_table;
80
81 if (type_table == NULL) {
82 type_table = g_hash_table_new(g_str_hash, g_str_equal);
83 }
84
85 return type_table;
86 }
87
88 static bool enumerating_types;
89
90 static void type_table_add(TypeImpl *ti)
91 {
92 assert(!enumerating_types);
93 g_hash_table_insert(type_table_get(), (void *)ti->name, ti);
94 }
95
96 static TypeImpl *type_table_lookup(const char *name)
97 {
98 return g_hash_table_lookup(type_table_get(), name);
99 }
100
101 static TypeImpl *type_new(const TypeInfo *info)
102 {
103 TypeImpl *ti = g_malloc0(sizeof(*ti));
104 int i;
105
106 g_assert(info->name != NULL);
107
108 if (type_table_lookup(info->name) != NULL) {
109 fprintf(stderr, "Registering `%s' which already exists\n", info->name);
110 abort();
111 }
112
113 ti->name = g_strdup(info->name);
114 ti->parent = g_strdup(info->parent);
115
116 ti->class_size = info->class_size;
117 ti->instance_size = info->instance_size;
118 ti->instance_align = info->instance_align;
119
120 ti->class_init = info->class_init;
121 ti->class_base_init = info->class_base_init;
122 ti->class_data = info->class_data;
123
124 ti->instance_init = info->instance_init;
125 ti->instance_post_init = info->instance_post_init;
126 ti->instance_finalize = info->instance_finalize;
127
128 ti->abstract = info->abstract;
129
130 for (i = 0; info->interfaces && info->interfaces[i].type; i++) {
131 ti->interfaces[i].typename = g_strdup(info->interfaces[i].type);
132 }
133 ti->num_interfaces = i;
134
135 return ti;
136 }
137
138 static TypeImpl *type_register_internal(const TypeInfo *info)
139 {
140 TypeImpl *ti;
141 ti = type_new(info);
142
143 type_table_add(ti);
144 return ti;
145 }
146
147 TypeImpl *type_register(const TypeInfo *info)
148 {
149 assert(info->parent);
150 return type_register_internal(info);
151 }
152
153 TypeImpl *type_register_static(const TypeInfo *info)
154 {
155 return type_register(info);
156 }
157
158 void type_register_static_array(const TypeInfo *infos, int nr_infos)
159 {
160 int i;
161
162 for (i = 0; i < nr_infos; i++) {
163 type_register_static(&infos[i]);
164 }
165 }
166
167 static TypeImpl *type_get_by_name(const char *name)
168 {
169 if (name == NULL) {
170 return NULL;
171 }
172
173 return type_table_lookup(name);
174 }
175
176 static TypeImpl *type_get_parent(TypeImpl *type)
177 {
178 if (!type->parent_type && type->parent) {
179 type->parent_type = type_get_by_name(type->parent);
180 if (!type->parent_type) {
181 fprintf(stderr, "Type '%s' is missing its parent '%s'\n",
182 type->name, type->parent);
183 abort();
184 }
185 }
186
187 return type->parent_type;
188 }
189
190 static bool type_has_parent(TypeImpl *type)
191 {
192 return (type->parent != NULL);
193 }
194
195 static size_t type_class_get_size(TypeImpl *ti)
196 {
197 if (ti->class_size) {
198 return ti->class_size;
199 }
200
201 if (type_has_parent(ti)) {
202 return type_class_get_size(type_get_parent(ti));
203 }
204
205 return sizeof(ObjectClass);
206 }
207
208 static size_t type_object_get_size(TypeImpl *ti)
209 {
210 if (ti->instance_size) {
211 return ti->instance_size;
212 }
213
214 if (type_has_parent(ti)) {
215 return type_object_get_size(type_get_parent(ti));
216 }
217
218 return 0;
219 }
220
221 size_t object_type_get_instance_size(const char *typename)
222 {
223 TypeImpl *type = type_get_by_name(typename);
224
225 g_assert(type != NULL);
226 return type_object_get_size(type);
227 }
228
229 static bool type_is_ancestor(TypeImpl *type, TypeImpl *target_type)
230 {
231 assert(target_type);
232
233 /* Check if target_type is a direct ancestor of type */
234 while (type) {
235 if (type == target_type) {
236 return true;
237 }
238
239 type = type_get_parent(type);
240 }
241
242 return false;
243 }
244
245 static void type_initialize(TypeImpl *ti);
246
247 static void type_initialize_interface(TypeImpl *ti, TypeImpl *interface_type,
248 TypeImpl *parent_type)
249 {
250 InterfaceClass *new_iface;
251 TypeInfo info = { };
252 TypeImpl *iface_impl;
253
254 info.parent = parent_type->name;
255 info.name = g_strdup_printf("%s::%s", ti->name, interface_type->name);
256 info.abstract = true;
257
258 iface_impl = type_new(&info);
259 iface_impl->parent_type = parent_type;
260 type_initialize(iface_impl);
261 g_free((char *)info.name);
262
263 new_iface = (InterfaceClass *)iface_impl->class;
264 new_iface->concrete_class = ti->class;
265 new_iface->interface_type = interface_type;
266
267 ti->class->interfaces = g_slist_append(ti->class->interfaces, new_iface);
268 }
269
270 static void object_property_free(gpointer data)
271 {
272 ObjectProperty *prop = data;
273
274 if (prop->defval) {
275 qobject_unref(prop->defval);
276 prop->defval = NULL;
277 }
278 g_free(prop->name);
279 g_free(prop->type);
280 g_free(prop->description);
281 g_free(prop);
282 }
283
284 static void type_initialize(TypeImpl *ti)
285 {
286 TypeImpl *parent;
287
288 if (ti->class) {
289 return;
290 }
291
292 ti->class_size = type_class_get_size(ti);
293 ti->instance_size = type_object_get_size(ti);
294 /* Any type with zero instance_size is implicitly abstract.
295 * This means interface types are all abstract.
296 */
297 if (ti->instance_size == 0) {
298 ti->abstract = true;
299 }
300 if (type_is_ancestor(ti, type_interface)) {
301 assert(ti->instance_size == 0);
302 assert(ti->abstract);
303 assert(!ti->instance_init);
304 assert(!ti->instance_post_init);
305 assert(!ti->instance_finalize);
306 assert(!ti->num_interfaces);
307 }
308 ti->class = g_malloc0(ti->class_size);
309
310 parent = type_get_parent(ti);
311 if (parent) {
312 type_initialize(parent);
313 GSList *e;
314 int i;
315
316 g_assert(parent->class_size <= ti->class_size);
317 g_assert(parent->instance_size <= ti->instance_size);
318 memcpy(ti->class, parent->class, parent->class_size);
319 ti->class->interfaces = NULL;
320
321 for (e = parent->class->interfaces; e; e = e->next) {
322 InterfaceClass *iface = e->data;
323 ObjectClass *klass = OBJECT_CLASS(iface);
324
325 type_initialize_interface(ti, iface->interface_type, klass->type);
326 }
327
328 for (i = 0; i < ti->num_interfaces; i++) {
329 TypeImpl *t = type_get_by_name(ti->interfaces[i].typename);
330 if (!t) {
331 error_report("missing interface '%s' for object '%s'",
332 ti->interfaces[i].typename, parent->name);
333 abort();
334 }
335 for (e = ti->class->interfaces; e; e = e->next) {
336 TypeImpl *target_type = OBJECT_CLASS(e->data)->type;
337
338 if (type_is_ancestor(target_type, t)) {
339 break;
340 }
341 }
342
343 if (e) {
344 continue;
345 }
346
347 type_initialize_interface(ti, t, t);
348 }
349 }
350
351 ti->class->properties = g_hash_table_new_full(g_str_hash, g_str_equal, NULL,
352 object_property_free);
353
354 ti->class->type = ti;
355
356 while (parent) {
357 if (parent->class_base_init) {
358 parent->class_base_init(ti->class, ti->class_data);
359 }
360 parent = type_get_parent(parent);
361 }
362
363 if (ti->class_init) {
364 ti->class_init(ti->class, ti->class_data);
365 }
366 }
367
368 static void object_init_with_type(Object *obj, TypeImpl *ti)
369 {
370 if (type_has_parent(ti)) {
371 object_init_with_type(obj, type_get_parent(ti));
372 }
373
374 if (ti->instance_init) {
375 ti->instance_init(obj);
376 }
377 }
378
379 static void object_post_init_with_type(Object *obj, TypeImpl *ti)
380 {
381 if (ti->instance_post_init) {
382 ti->instance_post_init(obj);
383 }
384
385 if (type_has_parent(ti)) {
386 object_post_init_with_type(obj, type_get_parent(ti));
387 }
388 }
389
390 bool object_apply_global_props(Object *obj, const GPtrArray *props,
391 Error **errp)
392 {
393 int i;
394
395 if (!props) {
396 return true;
397 }
398
399 for (i = 0; i < props->len; i++) {
400 GlobalProperty *p = g_ptr_array_index(props, i);
401 Error *err = NULL;
402
403 if (object_dynamic_cast(obj, p->driver) == NULL) {
404 continue;
405 }
406 if (p->optional && !object_property_find(obj, p->property)) {
407 continue;
408 }
409 p->used = true;
410 if (!object_property_parse(obj, p->property, p->value, &err)) {
411 error_prepend(&err, "can't apply global %s.%s=%s: ",
412 p->driver, p->property, p->value);
413 /*
414 * If errp != NULL, propagate error and return.
415 * If errp == NULL, report a warning, but keep going
416 * with the remaining globals.
417 */
418 if (errp) {
419 error_propagate(errp, err);
420 return false;
421 } else {
422 warn_report_err(err);
423 }
424 }
425 }
426
427 return true;
428 }
429
430 /*
431 * Global property defaults
432 * Slot 0: accelerator's global property defaults
433 * Slot 1: machine's global property defaults
434 * Slot 2: global properties from legacy command line option
435 * Each is a GPtrArray of of GlobalProperty.
436 * Applied in order, later entries override earlier ones.
437 */
438 static GPtrArray *object_compat_props[3];
439
440 /*
441 * Retrieve @GPtrArray for global property defined with options
442 * other than "-global". These are generally used for syntactic
443 * sugar and legacy command line options.
444 */
445 void object_register_sugar_prop(const char *driver, const char *prop, const char *value)
446 {
447 GlobalProperty *g;
448 if (!object_compat_props[2]) {
449 object_compat_props[2] = g_ptr_array_new();
450 }
451 g = g_new0(GlobalProperty, 1);
452 g->driver = g_strdup(driver);
453 g->property = g_strdup(prop);
454 g->value = g_strdup(value);
455 g_ptr_array_add(object_compat_props[2], g);
456 }
457
458 /*
459 * Set machine's global property defaults to @compat_props.
460 * May be called at most once.
461 */
462 void object_set_machine_compat_props(GPtrArray *compat_props)
463 {
464 assert(!object_compat_props[1]);
465 object_compat_props[1] = compat_props;
466 }
467
468 /*
469 * Set accelerator's global property defaults to @compat_props.
470 * May be called at most once.
471 */
472 void object_set_accelerator_compat_props(GPtrArray *compat_props)
473 {
474 assert(!object_compat_props[0]);
475 object_compat_props[0] = compat_props;
476 }
477
478 void object_apply_compat_props(Object *obj)
479 {
480 int i;
481
482 for (i = 0; i < ARRAY_SIZE(object_compat_props); i++) {
483 object_apply_global_props(obj, object_compat_props[i],
484 i == 2 ? &error_fatal : &error_abort);
485 }
486 }
487
488 static void object_class_property_init_all(Object *obj)
489 {
490 ObjectPropertyIterator iter;
491 ObjectProperty *prop;
492
493 object_class_property_iter_init(&iter, object_get_class(obj));
494 while ((prop = object_property_iter_next(&iter))) {
495 if (prop->init) {
496 prop->init(obj, prop);
497 }
498 }
499 }
500
501 static void object_initialize_with_type(Object *obj, size_t size, TypeImpl *type)
502 {
503 type_initialize(type);
504
505 g_assert(type->instance_size >= sizeof(Object));
506 g_assert(type->abstract == false);
507 g_assert(size >= type->instance_size);
508
509 memset(obj, 0, type->instance_size);
510 obj->class = type->class;
511 object_ref(obj);
512 object_class_property_init_all(obj);
513 obj->properties = g_hash_table_new_full(g_str_hash, g_str_equal,
514 NULL, object_property_free);
515 object_init_with_type(obj, type);
516 object_post_init_with_type(obj, type);
517 }
518
519 void object_initialize(void *data, size_t size, const char *typename)
520 {
521 TypeImpl *type = type_get_by_name(typename);
522
523 #ifdef CONFIG_MODULES
524 if (!type) {
525 module_load_qom_one(typename);
526 type = type_get_by_name(typename);
527 }
528 #endif
529 if (!type) {
530 error_report("missing object type '%s'", typename);
531 abort();
532 }
533
534 object_initialize_with_type(data, size, type);
535 }
536
537 bool object_initialize_child_with_props(Object *parentobj,
538 const char *propname,
539 void *childobj, size_t size,
540 const char *type,
541 Error **errp, ...)
542 {
543 va_list vargs;
544 bool ok;
545
546 va_start(vargs, errp);
547 ok = object_initialize_child_with_propsv(parentobj, propname,
548 childobj, size, type, errp,
549 vargs);
550 va_end(vargs);
551 return ok;
552 }
553
554 bool object_initialize_child_with_propsv(Object *parentobj,
555 const char *propname,
556 void *childobj, size_t size,
557 const char *type,
558 Error **errp, va_list vargs)
559 {
560 bool ok = false;
561 Object *obj;
562 UserCreatable *uc;
563
564 object_initialize(childobj, size, type);
565 obj = OBJECT(childobj);
566
567 if (!object_set_propv(obj, errp, vargs)) {
568 goto out;
569 }
570
571 object_property_add_child(parentobj, propname, obj);
572
573 uc = (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE);
574 if (uc) {
575 if (!user_creatable_complete(uc, errp)) {
576 object_unparent(obj);
577 goto out;
578 }
579 }
580
581 ok = true;
582
583 out:
584 /*
585 * We want @obj's reference to be 1 on success, 0 on failure.
586 * On success, it's 2: one taken by object_initialize(), and one
587 * by object_property_add_child().
588 * On failure in object_initialize() or earlier, it's 1.
589 * On failure afterwards, it's also 1: object_unparent() releases
590 * the reference taken by object_property_add_child().
591 */
592 object_unref(obj);
593 return ok;
594 }
595
596 void object_initialize_child_internal(Object *parent,
597 const char *propname,
598 void *child, size_t size,
599 const char *type)
600 {
601 object_initialize_child_with_props(parent, propname, child, size, type,
602 &error_abort, NULL);
603 }
604
605 static inline bool object_property_is_child(ObjectProperty *prop)
606 {
607 return strstart(prop->type, "child<", NULL);
608 }
609
610 static void object_property_del_all(Object *obj)
611 {
612 g_autoptr(GHashTable) done = g_hash_table_new(NULL, NULL);
613 ObjectProperty *prop;
614 ObjectPropertyIterator iter;
615 bool released;
616
617 do {
618 released = false;
619 object_property_iter_init(&iter, obj);
620 while ((prop = object_property_iter_next(&iter)) != NULL) {
621 if (g_hash_table_add(done, prop)) {
622 if (prop->release) {
623 prop->release(obj, prop->name, prop->opaque);
624 released = true;
625 break;
626 }
627 }
628 }
629 } while (released);
630
631 g_hash_table_unref(obj->properties);
632 }
633
634 static void object_property_del_child(Object *obj, Object *child)
635 {
636 ObjectProperty *prop;
637 GHashTableIter iter;
638 gpointer key, value;
639
640 g_hash_table_iter_init(&iter, obj->properties);
641 while (g_hash_table_iter_next(&iter, &key, &value)) {
642 prop = value;
643 if (object_property_is_child(prop) && prop->opaque == child) {
644 if (prop->release) {
645 prop->release(obj, prop->name, prop->opaque);
646 prop->release = NULL;
647 }
648 break;
649 }
650 }
651 g_hash_table_iter_init(&iter, obj->properties);
652 while (g_hash_table_iter_next(&iter, &key, &value)) {
653 prop = value;
654 if (object_property_is_child(prop) && prop->opaque == child) {
655 g_hash_table_iter_remove(&iter);
656 break;
657 }
658 }
659 }
660
661 void object_unparent(Object *obj)
662 {
663 if (obj->parent) {
664 object_property_del_child(obj->parent, obj);
665 }
666 }
667
668 static void object_deinit(Object *obj, TypeImpl *type)
669 {
670 if (type->instance_finalize) {
671 type->instance_finalize(obj);
672 }
673
674 if (type_has_parent(type)) {
675 object_deinit(obj, type_get_parent(type));
676 }
677 }
678
679 static void object_finalize(void *data)
680 {
681 Object *obj = data;
682 TypeImpl *ti = obj->class->type;
683
684 object_property_del_all(obj);
685 object_deinit(obj, ti);
686
687 g_assert(obj->ref == 0);
688 if (obj->free) {
689 obj->free(obj);
690 }
691 }
692
693 /* Find the minimum alignment guaranteed by the system malloc. */
694 #if __STDC_VERSION__ >= 201112L
695 typddef max_align_t qemu_max_align_t;
696 #else
697 typedef union {
698 long l;
699 void *p;
700 double d;
701 long double ld;
702 } qemu_max_align_t;
703 #endif
704
705 static Object *object_new_with_type(Type type)
706 {
707 Object *obj;
708 size_t size, align;
709 void (*obj_free)(void *);
710
711 g_assert(type != NULL);
712 type_initialize(type);
713
714 size = type->instance_size;
715 align = type->instance_align;
716
717 /*
718 * Do not use qemu_memalign unless required. Depending on the
719 * implementation, extra alignment implies extra overhead.
720 */
721 if (likely(align <= __alignof__(qemu_max_align_t))) {
722 obj = g_malloc(size);
723 obj_free = g_free;
724 } else {
725 obj = qemu_memalign(align, size);
726 obj_free = qemu_vfree;
727 }
728
729 object_initialize_with_type(obj, size, type);
730 obj->free = obj_free;
731
732 return obj;
733 }
734
735 Object *object_new_with_class(ObjectClass *klass)
736 {
737 return object_new_with_type(klass->type);
738 }
739
740 Object *object_new(const char *typename)
741 {
742 TypeImpl *ti = type_get_by_name(typename);
743
744 return object_new_with_type(ti);
745 }
746
747
748 Object *object_new_with_props(const char *typename,
749 Object *parent,
750 const char *id,
751 Error **errp,
752 ...)
753 {
754 va_list vargs;
755 Object *obj;
756
757 va_start(vargs, errp);
758 obj = object_new_with_propv(typename, parent, id, errp, vargs);
759 va_end(vargs);
760
761 return obj;
762 }
763
764
765 Object *object_new_with_propv(const char *typename,
766 Object *parent,
767 const char *id,
768 Error **errp,
769 va_list vargs)
770 {
771 Object *obj;
772 ObjectClass *klass;
773 UserCreatable *uc;
774
775 klass = object_class_by_name(typename);
776 if (!klass) {
777 error_setg(errp, "invalid object type: %s", typename);
778 return NULL;
779 }
780
781 if (object_class_is_abstract(klass)) {
782 error_setg(errp, "object type '%s' is abstract", typename);
783 return NULL;
784 }
785 obj = object_new_with_type(klass->type);
786
787 if (!object_set_propv(obj, errp, vargs)) {
788 goto error;
789 }
790
791 if (id != NULL) {
792 object_property_add_child(parent, id, obj);
793 }
794
795 uc = (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE);
796 if (uc) {
797 if (!user_creatable_complete(uc, errp)) {
798 if (id != NULL) {
799 object_unparent(obj);
800 }
801 goto error;
802 }
803 }
804
805 object_unref(obj);
806 return obj;
807
808 error:
809 object_unref(obj);
810 return NULL;
811 }
812
813
814 bool object_set_props(Object *obj,
815 Error **errp,
816 ...)
817 {
818 va_list vargs;
819 bool ret;
820
821 va_start(vargs, errp);
822 ret = object_set_propv(obj, errp, vargs);
823 va_end(vargs);
824
825 return ret;
826 }
827
828
829 bool object_set_propv(Object *obj,
830 Error **errp,
831 va_list vargs)
832 {
833 const char *propname;
834
835 propname = va_arg(vargs, char *);
836 while (propname != NULL) {
837 const char *value = va_arg(vargs, char *);
838
839 g_assert(value != NULL);
840 if (!object_property_parse(obj, propname, value, errp)) {
841 return false;
842 }
843 propname = va_arg(vargs, char *);
844 }
845
846 return true;
847 }
848
849
850 Object *object_dynamic_cast(Object *obj, const char *typename)
851 {
852 if (obj && object_class_dynamic_cast(object_get_class(obj), typename)) {
853 return obj;
854 }
855
856 return NULL;
857 }
858
859 Object *object_dynamic_cast_assert(Object *obj, const char *typename,
860 const char *file, int line, const char *func)
861 {
862 trace_object_dynamic_cast_assert(obj ? obj->class->type->name : "(null)",
863 typename, file, line, func);
864
865 #ifdef CONFIG_QOM_CAST_DEBUG
866 int i;
867 Object *inst;
868
869 for (i = 0; obj && i < OBJECT_CLASS_CAST_CACHE; i++) {
870 if (qatomic_read(&obj->class->object_cast_cache[i]) == typename) {
871 goto out;
872 }
873 }
874
875 inst = object_dynamic_cast(obj, typename);
876
877 if (!inst && obj) {
878 fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n",
879 file, line, func, obj, typename);
880 abort();
881 }
882
883 assert(obj == inst);
884
885 if (obj && obj == inst) {
886 for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) {
887 qatomic_set(&obj->class->object_cast_cache[i - 1],
888 qatomic_read(&obj->class->object_cast_cache[i]));
889 }
890 qatomic_set(&obj->class->object_cast_cache[i - 1], typename);
891 }
892
893 out:
894 #endif
895 return obj;
896 }
897
898 ObjectClass *object_class_dynamic_cast(ObjectClass *class,
899 const char *typename)
900 {
901 ObjectClass *ret = NULL;
902 TypeImpl *target_type;
903 TypeImpl *type;
904
905 if (!class) {
906 return NULL;
907 }
908
909 /* A simple fast path that can trigger a lot for leaf classes. */
910 type = class->type;
911 if (type->name == typename) {
912 return class;
913 }
914
915 target_type = type_get_by_name(typename);
916 if (!target_type) {
917 /* target class type unknown, so fail the cast */
918 return NULL;
919 }
920
921 if (type->class->interfaces &&
922 type_is_ancestor(target_type, type_interface)) {
923 int found = 0;
924 GSList *i;
925
926 for (i = class->interfaces; i; i = i->next) {
927 ObjectClass *target_class = i->data;
928
929 if (type_is_ancestor(target_class->type, target_type)) {
930 ret = target_class;
931 found++;
932 }
933 }
934
935 /* The match was ambiguous, don't allow a cast */
936 if (found > 1) {
937 ret = NULL;
938 }
939 } else if (type_is_ancestor(type, target_type)) {
940 ret = class;
941 }
942
943 return ret;
944 }
945
946 ObjectClass *object_class_dynamic_cast_assert(ObjectClass *class,
947 const char *typename,
948 const char *file, int line,
949 const char *func)
950 {
951 ObjectClass *ret;
952
953 trace_object_class_dynamic_cast_assert(class ? class->type->name : "(null)",
954 typename, file, line, func);
955
956 #ifdef CONFIG_QOM_CAST_DEBUG
957 int i;
958
959 for (i = 0; class && i < OBJECT_CLASS_CAST_CACHE; i++) {
960 if (qatomic_read(&class->class_cast_cache[i]) == typename) {
961 ret = class;
962 goto out;
963 }
964 }
965 #else
966 if (!class || !class->interfaces) {
967 return class;
968 }
969 #endif
970
971 ret = object_class_dynamic_cast(class, typename);
972 if (!ret && class) {
973 fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n",
974 file, line, func, class, typename);
975 abort();
976 }
977
978 #ifdef CONFIG_QOM_CAST_DEBUG
979 if (class && ret == class) {
980 for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) {
981 qatomic_set(&class->class_cast_cache[i - 1],
982 qatomic_read(&class->class_cast_cache[i]));
983 }
984 qatomic_set(&class->class_cast_cache[i - 1], typename);
985 }
986 out:
987 #endif
988 return ret;
989 }
990
991 const char *object_get_typename(const Object *obj)
992 {
993 return obj->class->type->name;
994 }
995
996 ObjectClass *object_get_class(Object *obj)
997 {
998 return obj->class;
999 }
1000
1001 bool object_class_is_abstract(ObjectClass *klass)
1002 {
1003 return klass->type->abstract;
1004 }
1005
1006 const char *object_class_get_name(ObjectClass *klass)
1007 {
1008 return klass->type->name;
1009 }
1010
1011 ObjectClass *object_class_by_name(const char *typename)
1012 {
1013 TypeImpl *type = type_get_by_name(typename);
1014
1015 if (!type) {
1016 return NULL;
1017 }
1018
1019 type_initialize(type);
1020
1021 return type->class;
1022 }
1023
1024 ObjectClass *module_object_class_by_name(const char *typename)
1025 {
1026 ObjectClass *oc;
1027
1028 oc = object_class_by_name(typename);
1029 #ifdef CONFIG_MODULES
1030 if (!oc) {
1031 module_load_qom_one(typename);
1032 oc = object_class_by_name(typename);
1033 }
1034 #endif
1035 return oc;
1036 }
1037
1038 ObjectClass *object_class_get_parent(ObjectClass *class)
1039 {
1040 TypeImpl *type = type_get_parent(class->type);
1041
1042 if (!type) {
1043 return NULL;
1044 }
1045
1046 type_initialize(type);
1047
1048 return type->class;
1049 }
1050
1051 typedef struct OCFData
1052 {
1053 void (*fn)(ObjectClass *klass, void *opaque);
1054 const char *implements_type;
1055 bool include_abstract;
1056 void *opaque;
1057 } OCFData;
1058
1059 static void object_class_foreach_tramp(gpointer key, gpointer value,
1060 gpointer opaque)
1061 {
1062 OCFData *data = opaque;
1063 TypeImpl *type = value;
1064 ObjectClass *k;
1065
1066 type_initialize(type);
1067 k = type->class;
1068
1069 if (!data->include_abstract && type->abstract) {
1070 return;
1071 }
1072
1073 if (data->implements_type &&
1074 !object_class_dynamic_cast(k, data->implements_type)) {
1075 return;
1076 }
1077
1078 data->fn(k, data->opaque);
1079 }
1080
1081 void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque),
1082 const char *implements_type, bool include_abstract,
1083 void *opaque)
1084 {
1085 OCFData data = { fn, implements_type, include_abstract, opaque };
1086
1087 enumerating_types = true;
1088 g_hash_table_foreach(type_table_get(), object_class_foreach_tramp, &data);
1089 enumerating_types = false;
1090 }
1091
1092 static int do_object_child_foreach(Object *obj,
1093 int (*fn)(Object *child, void *opaque),
1094 void *opaque, bool recurse)
1095 {
1096 GHashTableIter iter;
1097 ObjectProperty *prop;
1098 int ret = 0;
1099
1100 g_hash_table_iter_init(&iter, obj->properties);
1101 while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) {
1102 if (object_property_is_child(prop)) {
1103 Object *child = prop->opaque;
1104
1105 ret = fn(child, opaque);
1106 if (ret != 0) {
1107 break;
1108 }
1109 if (recurse) {
1110 ret = do_object_child_foreach(child, fn, opaque, true);
1111 if (ret != 0) {
1112 break;
1113 }
1114 }
1115 }
1116 }
1117 return ret;
1118 }
1119
1120 int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque),
1121 void *opaque)
1122 {
1123 return do_object_child_foreach(obj, fn, opaque, false);
1124 }
1125
1126 int object_child_foreach_recursive(Object *obj,
1127 int (*fn)(Object *child, void *opaque),
1128 void *opaque)
1129 {
1130 return do_object_child_foreach(obj, fn, opaque, true);
1131 }
1132
1133 static void object_class_get_list_tramp(ObjectClass *klass, void *opaque)
1134 {
1135 GSList **list = opaque;
1136
1137 *list = g_slist_prepend(*list, klass);
1138 }
1139
1140 GSList *object_class_get_list(const char *implements_type,
1141 bool include_abstract)
1142 {
1143 GSList *list = NULL;
1144
1145 object_class_foreach(object_class_get_list_tramp,
1146 implements_type, include_abstract, &list);
1147 return list;
1148 }
1149
1150 static gint object_class_cmp(gconstpointer a, gconstpointer b)
1151 {
1152 return strcasecmp(object_class_get_name((ObjectClass *)a),
1153 object_class_get_name((ObjectClass *)b));
1154 }
1155
1156 GSList *object_class_get_list_sorted(const char *implements_type,
1157 bool include_abstract)
1158 {
1159 return g_slist_sort(object_class_get_list(implements_type, include_abstract),
1160 object_class_cmp);
1161 }
1162
1163 Object *object_ref(void *objptr)
1164 {
1165 Object *obj = OBJECT(objptr);
1166 if (!obj) {
1167 return NULL;
1168 }
1169 qatomic_inc(&obj->ref);
1170 return obj;
1171 }
1172
1173 void object_unref(void *objptr)
1174 {
1175 Object *obj = OBJECT(objptr);
1176 if (!obj) {
1177 return;
1178 }
1179 g_assert(obj->ref > 0);
1180
1181 /* parent always holds a reference to its children */
1182 if (qatomic_fetch_dec(&obj->ref) == 1) {
1183 object_finalize(obj);
1184 }
1185 }
1186
1187 ObjectProperty *
1188 object_property_try_add(Object *obj, const char *name, const char *type,
1189 ObjectPropertyAccessor *get,
1190 ObjectPropertyAccessor *set,
1191 ObjectPropertyRelease *release,
1192 void *opaque, Error **errp)
1193 {
1194 ObjectProperty *prop;
1195 size_t name_len = strlen(name);
1196
1197 if (name_len >= 3 && !memcmp(name + name_len - 3, "[*]", 4)) {
1198 int i;
1199 ObjectProperty *ret;
1200 char *name_no_array = g_strdup(name);
1201
1202 name_no_array[name_len - 3] = '\0';
1203 for (i = 0; ; ++i) {
1204 char *full_name = g_strdup_printf("%s[%d]", name_no_array, i);
1205
1206 ret = object_property_try_add(obj, full_name, type, get, set,
1207 release, opaque, NULL);
1208 g_free(full_name);
1209 if (ret) {
1210 break;
1211 }
1212 }
1213 g_free(name_no_array);
1214 return ret;
1215 }
1216
1217 if (object_property_find(obj, name) != NULL) {
1218 error_setg(errp, "attempt to add duplicate property '%s' to object (type '%s')",
1219 name, object_get_typename(obj));
1220 return NULL;
1221 }
1222
1223 prop = g_malloc0(sizeof(*prop));
1224
1225 prop->name = g_strdup(name);
1226 prop->type = g_strdup(type);
1227
1228 prop->get = get;
1229 prop->set = set;
1230 prop->release = release;
1231 prop->opaque = opaque;
1232
1233 g_hash_table_insert(obj->properties, prop->name, prop);
1234 return prop;
1235 }
1236
1237 ObjectProperty *
1238 object_property_add(Object *obj, const char *name, const char *type,
1239 ObjectPropertyAccessor *get,
1240 ObjectPropertyAccessor *set,
1241 ObjectPropertyRelease *release,
1242 void *opaque)
1243 {
1244 return object_property_try_add(obj, name, type, get, set, release,
1245 opaque, &error_abort);
1246 }
1247
1248 ObjectProperty *
1249 object_class_property_add(ObjectClass *klass,
1250 const char *name,
1251 const char *type,
1252 ObjectPropertyAccessor *get,
1253 ObjectPropertyAccessor *set,
1254 ObjectPropertyRelease *release,
1255 void *opaque)
1256 {
1257 ObjectProperty *prop;
1258
1259 assert(!object_class_property_find(klass, name));
1260
1261 prop = g_malloc0(sizeof(*prop));
1262
1263 prop->name = g_strdup(name);
1264 prop->type = g_strdup(type);
1265
1266 prop->get = get;
1267 prop->set = set;
1268 prop->release = release;
1269 prop->opaque = opaque;
1270
1271 g_hash_table_insert(klass->properties, prop->name, prop);
1272
1273 return prop;
1274 }
1275
1276 ObjectProperty *object_property_find(Object *obj, const char *name)
1277 {
1278 ObjectProperty *prop;
1279 ObjectClass *klass = object_get_class(obj);
1280
1281 prop = object_class_property_find(klass, name);
1282 if (prop) {
1283 return prop;
1284 }
1285
1286 return g_hash_table_lookup(obj->properties, name);
1287 }
1288
1289 ObjectProperty *object_property_find_err(Object *obj, const char *name,
1290 Error **errp)
1291 {
1292 ObjectProperty *prop = object_property_find(obj, name);
1293 if (!prop) {
1294 error_setg(errp, "Property '%s.%s' not found",
1295 object_get_typename(obj), name);
1296 }
1297 return prop;
1298 }
1299
1300 void object_property_iter_init(ObjectPropertyIterator *iter,
1301 Object *obj)
1302 {
1303 g_hash_table_iter_init(&iter->iter, obj->properties);
1304 iter->nextclass = object_get_class(obj);
1305 }
1306
1307 ObjectProperty *object_property_iter_next(ObjectPropertyIterator *iter)
1308 {
1309 gpointer key, val;
1310 while (!g_hash_table_iter_next(&iter->iter, &key, &val)) {
1311 if (!iter->nextclass) {
1312 return NULL;
1313 }
1314 g_hash_table_iter_init(&iter->iter, iter->nextclass->properties);
1315 iter->nextclass = object_class_get_parent(iter->nextclass);
1316 }
1317 return val;
1318 }
1319
1320 void object_class_property_iter_init(ObjectPropertyIterator *iter,
1321 ObjectClass *klass)
1322 {
1323 g_hash_table_iter_init(&iter->iter, klass->properties);
1324 iter->nextclass = object_class_get_parent(klass);
1325 }
1326
1327 ObjectProperty *object_class_property_find(ObjectClass *klass, const char *name)
1328 {
1329 ObjectClass *parent_klass;
1330
1331 parent_klass = object_class_get_parent(klass);
1332 if (parent_klass) {
1333 ObjectProperty *prop =
1334 object_class_property_find(parent_klass, name);
1335 if (prop) {
1336 return prop;
1337 }
1338 }
1339
1340 return g_hash_table_lookup(klass->properties, name);
1341 }
1342
1343 ObjectProperty *object_class_property_find_err(ObjectClass *klass,
1344 const char *name,
1345 Error **errp)
1346 {
1347 ObjectProperty *prop = object_class_property_find(klass, name);
1348 if (!prop) {
1349 error_setg(errp, "Property '.%s' not found", name);
1350 }
1351 return prop;
1352 }
1353
1354
1355 void object_property_del(Object *obj, const char *name)
1356 {
1357 ObjectProperty *prop = g_hash_table_lookup(obj->properties, name);
1358
1359 if (prop->release) {
1360 prop->release(obj, name, prop->opaque);
1361 }
1362 g_hash_table_remove(obj->properties, name);
1363 }
1364
1365 bool object_property_get(Object *obj, const char *name, Visitor *v,
1366 Error **errp)
1367 {
1368 Error *err = NULL;
1369 ObjectProperty *prop = object_property_find_err(obj, name, errp);
1370
1371 if (prop == NULL) {
1372 return false;
1373 }
1374
1375 if (!prop->get) {
1376 error_setg(errp, QERR_PERMISSION_DENIED);
1377 return false;
1378 }
1379 prop->get(obj, v, name, prop->opaque, &err);
1380 error_propagate(errp, err);
1381 return !err;
1382 }
1383
1384 bool object_property_set(Object *obj, const char *name, Visitor *v,
1385 Error **errp)
1386 {
1387 Error *err = NULL;
1388 ObjectProperty *prop = object_property_find_err(obj, name, errp);
1389
1390 if (prop == NULL) {
1391 return false;
1392 }
1393
1394 if (!prop->set) {
1395 error_setg(errp, QERR_PERMISSION_DENIED);
1396 return false;
1397 }
1398 prop->set(obj, v, name, prop->opaque, &err);
1399 error_propagate(errp, err);
1400 return !err;
1401 }
1402
1403 bool object_property_set_str(Object *obj, const char *name,
1404 const char *value, Error **errp)
1405 {
1406 QString *qstr = qstring_from_str(value);
1407 bool ok = object_property_set_qobject(obj, name, QOBJECT(qstr), errp);
1408
1409 qobject_unref(qstr);
1410 return ok;
1411 }
1412
1413 char *object_property_get_str(Object *obj, const char *name,
1414 Error **errp)
1415 {
1416 QObject *ret = object_property_get_qobject(obj, name, errp);
1417 char *retval;
1418
1419 if (!ret) {
1420 return NULL;
1421 }
1422
1423 retval = g_strdup(qobject_get_try_str(ret));
1424 if (!retval) {
1425 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "string");
1426 }
1427
1428 qobject_unref(ret);
1429 return retval;
1430 }
1431
1432 bool object_property_set_link(Object *obj, const char *name,
1433 Object *value, Error **errp)
1434 {
1435 g_autofree char *path = NULL;
1436
1437 if (value) {
1438 path = object_get_canonical_path(value);
1439 }
1440 return object_property_set_str(obj, name, path ?: "", errp);
1441 }
1442
1443 Object *object_property_get_link(Object *obj, const char *name,
1444 Error **errp)
1445 {
1446 char *str = object_property_get_str(obj, name, errp);
1447 Object *target = NULL;
1448
1449 if (str && *str) {
1450 target = object_resolve_path(str, NULL);
1451 if (!target) {
1452 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
1453 "Device '%s' not found", str);
1454 }
1455 }
1456
1457 g_free(str);
1458 return target;
1459 }
1460
1461 bool object_property_set_bool(Object *obj, const char *name,
1462 bool value, Error **errp)
1463 {
1464 QBool *qbool = qbool_from_bool(value);
1465 bool ok = object_property_set_qobject(obj, name, QOBJECT(qbool), errp);
1466
1467 qobject_unref(qbool);
1468 return ok;
1469 }
1470
1471 bool object_property_get_bool(Object *obj, const char *name,
1472 Error **errp)
1473 {
1474 QObject *ret = object_property_get_qobject(obj, name, errp);
1475 QBool *qbool;
1476 bool retval;
1477
1478 if (!ret) {
1479 return false;
1480 }
1481 qbool = qobject_to(QBool, ret);
1482 if (!qbool) {
1483 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "boolean");
1484 retval = false;
1485 } else {
1486 retval = qbool_get_bool(qbool);
1487 }
1488
1489 qobject_unref(ret);
1490 return retval;
1491 }
1492
1493 bool object_property_set_int(Object *obj, const char *name,
1494 int64_t value, Error **errp)
1495 {
1496 QNum *qnum = qnum_from_int(value);
1497 bool ok = object_property_set_qobject(obj, name, QOBJECT(qnum), errp);
1498
1499 qobject_unref(qnum);
1500 return ok;
1501 }
1502
1503 int64_t object_property_get_int(Object *obj, const char *name,
1504 Error **errp)
1505 {
1506 QObject *ret = object_property_get_qobject(obj, name, errp);
1507 QNum *qnum;
1508 int64_t retval;
1509
1510 if (!ret) {
1511 return -1;
1512 }
1513
1514 qnum = qobject_to(QNum, ret);
1515 if (!qnum || !qnum_get_try_int(qnum, &retval)) {
1516 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "int");
1517 retval = -1;
1518 }
1519
1520 qobject_unref(ret);
1521 return retval;
1522 }
1523
1524 static void object_property_init_defval(Object *obj, ObjectProperty *prop)
1525 {
1526 Visitor *v = qobject_input_visitor_new(prop->defval);
1527
1528 assert(prop->set != NULL);
1529 prop->set(obj, v, prop->name, prop->opaque, &error_abort);
1530
1531 visit_free(v);
1532 }
1533
1534 static void object_property_set_default(ObjectProperty *prop, QObject *defval)
1535 {
1536 assert(!prop->defval);
1537 assert(!prop->init);
1538
1539 prop->defval = defval;
1540 prop->init = object_property_init_defval;
1541 }
1542
1543 void object_property_set_default_bool(ObjectProperty *prop, bool value)
1544 {
1545 object_property_set_default(prop, QOBJECT(qbool_from_bool(value)));
1546 }
1547
1548 void object_property_set_default_str(ObjectProperty *prop, const char *value)
1549 {
1550 object_property_set_default(prop, QOBJECT(qstring_from_str(value)));
1551 }
1552
1553 void object_property_set_default_int(ObjectProperty *prop, int64_t value)
1554 {
1555 object_property_set_default(prop, QOBJECT(qnum_from_int(value)));
1556 }
1557
1558 void object_property_set_default_uint(ObjectProperty *prop, uint64_t value)
1559 {
1560 object_property_set_default(prop, QOBJECT(qnum_from_uint(value)));
1561 }
1562
1563 bool object_property_set_uint(Object *obj, const char *name,
1564 uint64_t value, Error **errp)
1565 {
1566 QNum *qnum = qnum_from_uint(value);
1567 bool ok = object_property_set_qobject(obj, name, QOBJECT(qnum), errp);
1568
1569 qobject_unref(qnum);
1570 return ok;
1571 }
1572
1573 uint64_t object_property_get_uint(Object *obj, const char *name,
1574 Error **errp)
1575 {
1576 QObject *ret = object_property_get_qobject(obj, name, errp);
1577 QNum *qnum;
1578 uint64_t retval;
1579
1580 if (!ret) {
1581 return 0;
1582 }
1583 qnum = qobject_to(QNum, ret);
1584 if (!qnum || !qnum_get_try_uint(qnum, &retval)) {
1585 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "uint");
1586 retval = 0;
1587 }
1588
1589 qobject_unref(ret);
1590 return retval;
1591 }
1592
1593 typedef struct EnumProperty {
1594 const QEnumLookup *lookup;
1595 int (*get)(Object *, Error **);
1596 void (*set)(Object *, int, Error **);
1597 } EnumProperty;
1598
1599 int object_property_get_enum(Object *obj, const char *name,
1600 const char *typename, Error **errp)
1601 {
1602 char *str;
1603 int ret;
1604 ObjectProperty *prop = object_property_find_err(obj, name, errp);
1605 EnumProperty *enumprop;
1606
1607 if (prop == NULL) {
1608 return -1;
1609 }
1610
1611 if (!g_str_equal(prop->type, typename)) {
1612 error_setg(errp, "Property %s on %s is not '%s' enum type",
1613 name, object_class_get_name(
1614 object_get_class(obj)), typename);
1615 return -1;
1616 }
1617
1618 enumprop = prop->opaque;
1619
1620 str = object_property_get_str(obj, name, errp);
1621 if (!str) {
1622 return -1;
1623 }
1624
1625 ret = qapi_enum_parse(enumprop->lookup, str, -1, errp);
1626 g_free(str);
1627
1628 return ret;
1629 }
1630
1631 bool object_property_parse(Object *obj, const char *name,
1632 const char *string, Error **errp)
1633 {
1634 Visitor *v = string_input_visitor_new(string);
1635 bool ok = object_property_set(obj, name, v, errp);
1636
1637 visit_free(v);
1638 return ok;
1639 }
1640
1641 char *object_property_print(Object *obj, const char *name, bool human,
1642 Error **errp)
1643 {
1644 Visitor *v;
1645 char *string = NULL;
1646
1647 v = string_output_visitor_new(human, &string);
1648 if (!object_property_get(obj, name, v, errp)) {
1649 goto out;
1650 }
1651
1652 visit_complete(v, &string);
1653
1654 out:
1655 visit_free(v);
1656 return string;
1657 }
1658
1659 const char *object_property_get_type(Object *obj, const char *name, Error **errp)
1660 {
1661 ObjectProperty *prop = object_property_find_err(obj, name, errp);
1662 if (prop == NULL) {
1663 return NULL;
1664 }
1665
1666 return prop->type;
1667 }
1668
1669 Object *object_get_root(void)
1670 {
1671 static Object *root;
1672
1673 if (!root) {
1674 root = object_new("container");
1675 }
1676
1677 return root;
1678 }
1679
1680 Object *object_get_objects_root(void)
1681 {
1682 return container_get(object_get_root(), "/objects");
1683 }
1684
1685 Object *object_get_internal_root(void)
1686 {
1687 static Object *internal_root;
1688
1689 if (!internal_root) {
1690 internal_root = object_new("container");
1691 }
1692
1693 return internal_root;
1694 }
1695
1696 static void object_get_child_property(Object *obj, Visitor *v,
1697 const char *name, void *opaque,
1698 Error **errp)
1699 {
1700 Object *child = opaque;
1701 char *path;
1702
1703 path = object_get_canonical_path(child);
1704 visit_type_str(v, name, &path, errp);
1705 g_free(path);
1706 }
1707
1708 static Object *object_resolve_child_property(Object *parent, void *opaque,
1709 const char *part)
1710 {
1711 return opaque;
1712 }
1713
1714 static void object_finalize_child_property(Object *obj, const char *name,
1715 void *opaque)
1716 {
1717 Object *child = opaque;
1718
1719 if (child->class->unparent) {
1720 (child->class->unparent)(child);
1721 }
1722 child->parent = NULL;
1723 object_unref(child);
1724 }
1725
1726 ObjectProperty *
1727 object_property_try_add_child(Object *obj, const char *name,
1728 Object *child, Error **errp)
1729 {
1730 g_autofree char *type = NULL;
1731 ObjectProperty *op;
1732
1733 assert(!child->parent);
1734
1735 type = g_strdup_printf("child<%s>", object_get_typename(child));
1736
1737 op = object_property_try_add(obj, name, type, object_get_child_property,
1738 NULL, object_finalize_child_property,
1739 child, errp);
1740 if (!op) {
1741 return NULL;
1742 }
1743 op->resolve = object_resolve_child_property;
1744 object_ref(child);
1745 child->parent = obj;
1746 return op;
1747 }
1748
1749 ObjectProperty *
1750 object_property_add_child(Object *obj, const char *name,
1751 Object *child)
1752 {
1753 return object_property_try_add_child(obj, name, child, &error_abort);
1754 }
1755
1756 void object_property_allow_set_link(const Object *obj, const char *name,
1757 Object *val, Error **errp)
1758 {
1759 /* Allow the link to be set, always */
1760 }
1761
1762 typedef struct {
1763 union {
1764 Object **targetp;
1765 Object *target; /* if OBJ_PROP_LINK_DIRECT, when holding the pointer */
1766 ptrdiff_t offset; /* if OBJ_PROP_LINK_CLASS */
1767 };
1768 void (*check)(const Object *, const char *, Object *, Error **);
1769 ObjectPropertyLinkFlags flags;
1770 } LinkProperty;
1771
1772 static Object **
1773 object_link_get_targetp(Object *obj, LinkProperty *lprop)
1774 {
1775 if (lprop->flags & OBJ_PROP_LINK_DIRECT) {
1776 return &lprop->target;
1777 } else if (lprop->flags & OBJ_PROP_LINK_CLASS) {
1778 return (void *)obj + lprop->offset;
1779 } else {
1780 return lprop->targetp;
1781 }
1782 }
1783
1784 static void object_get_link_property(Object *obj, Visitor *v,
1785 const char *name, void *opaque,
1786 Error **errp)
1787 {
1788 LinkProperty *lprop = opaque;
1789 Object **targetp = object_link_get_targetp(obj, lprop);
1790 char *path;
1791
1792 if (*targetp) {
1793 path = object_get_canonical_path(*targetp);
1794 visit_type_str(v, name, &path, errp);
1795 g_free(path);
1796 } else {
1797 path = (char *)"";
1798 visit_type_str(v, name, &path, errp);
1799 }
1800 }
1801
1802 /*
1803 * object_resolve_link:
1804 *
1805 * Lookup an object and ensure its type matches the link property type. This
1806 * is similar to object_resolve_path() except type verification against the
1807 * link property is performed.
1808 *
1809 * Returns: The matched object or NULL on path lookup failures.
1810 */
1811 static Object *object_resolve_link(Object *obj, const char *name,
1812 const char *path, Error **errp)
1813 {
1814 const char *type;
1815 char *target_type;
1816 bool ambiguous = false;
1817 Object *target;
1818
1819 /* Go from link<FOO> to FOO. */
1820 type = object_property_get_type(obj, name, NULL);
1821 target_type = g_strndup(&type[5], strlen(type) - 6);
1822 target = object_resolve_path_type(path, target_type, &ambiguous);
1823
1824 if (ambiguous) {
1825 error_setg(errp, "Path '%s' does not uniquely identify an object",
1826 path);
1827 } else if (!target) {
1828 target = object_resolve_path(path, &ambiguous);
1829 if (target || ambiguous) {
1830 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, target_type);
1831 } else {
1832 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
1833 "Device '%s' not found", path);
1834 }
1835 target = NULL;
1836 }
1837 g_free(target_type);
1838
1839 return target;
1840 }
1841
1842 static void object_set_link_property(Object *obj, Visitor *v,
1843 const char *name, void *opaque,
1844 Error **errp)
1845 {
1846 Error *local_err = NULL;
1847 LinkProperty *prop = opaque;
1848 Object **targetp = object_link_get_targetp(obj, prop);
1849 Object *old_target = *targetp;
1850 Object *new_target;
1851 char *path = NULL;
1852
1853 if (!visit_type_str(v, name, &path, errp)) {
1854 return;
1855 }
1856
1857 if (*path) {
1858 new_target = object_resolve_link(obj, name, path, errp);
1859 if (!new_target) {
1860 g_free(path);
1861 return;
1862 }
1863 } else {
1864 new_target = NULL;
1865 }
1866
1867 g_free(path);
1868
1869 prop->check(obj, name, new_target, &local_err);
1870 if (local_err) {
1871 error_propagate(errp, local_err);
1872 return;
1873 }
1874
1875 *targetp = new_target;
1876 if (prop->flags & OBJ_PROP_LINK_STRONG) {
1877 object_ref(new_target);
1878 object_unref(old_target);
1879 }
1880 }
1881
1882 static Object *object_resolve_link_property(Object *parent, void *opaque,
1883 const char *part)
1884 {
1885 LinkProperty *lprop = opaque;
1886
1887 return *object_link_get_targetp(parent, lprop);
1888 }
1889
1890 static void object_release_link_property(Object *obj, const char *name,
1891 void *opaque)
1892 {
1893 LinkProperty *prop = opaque;
1894 Object **targetp = object_link_get_targetp(obj, prop);
1895
1896 if ((prop->flags & OBJ_PROP_LINK_STRONG) && *targetp) {
1897 object_unref(*targetp);
1898 }
1899 if (!(prop->flags & OBJ_PROP_LINK_CLASS)) {
1900 g_free(prop);
1901 }
1902 }
1903
1904 static ObjectProperty *
1905 object_add_link_prop(Object *obj, const char *name,
1906 const char *type, void *ptr,
1907 void (*check)(const Object *, const char *,
1908 Object *, Error **),
1909 ObjectPropertyLinkFlags flags)
1910 {
1911 LinkProperty *prop = g_malloc(sizeof(*prop));
1912 g_autofree char *full_type = NULL;
1913 ObjectProperty *op;
1914
1915 if (flags & OBJ_PROP_LINK_DIRECT) {
1916 prop->target = ptr;
1917 } else {
1918 prop->targetp = ptr;
1919 }
1920 prop->check = check;
1921 prop->flags = flags;
1922
1923 full_type = g_strdup_printf("link<%s>", type);
1924
1925 op = object_property_add(obj, name, full_type,
1926 object_get_link_property,
1927 check ? object_set_link_property : NULL,
1928 object_release_link_property,
1929 prop);
1930 op->resolve = object_resolve_link_property;
1931 return op;
1932 }
1933
1934 ObjectProperty *
1935 object_property_add_link(Object *obj, const char *name,
1936 const char *type, Object **targetp,
1937 void (*check)(const Object *, const char *,
1938 Object *, Error **),
1939 ObjectPropertyLinkFlags flags)
1940 {
1941 return object_add_link_prop(obj, name, type, targetp, check, flags);
1942 }
1943
1944 ObjectProperty *
1945 object_class_property_add_link(ObjectClass *oc,
1946 const char *name,
1947 const char *type, ptrdiff_t offset,
1948 void (*check)(const Object *obj, const char *name,
1949 Object *val, Error **errp),
1950 ObjectPropertyLinkFlags flags)
1951 {
1952 LinkProperty *prop = g_new0(LinkProperty, 1);
1953 char *full_type;
1954 ObjectProperty *op;
1955
1956 prop->offset = offset;
1957 prop->check = check;
1958 prop->flags = flags | OBJ_PROP_LINK_CLASS;
1959
1960 full_type = g_strdup_printf("link<%s>", type);
1961
1962 op = object_class_property_add(oc, name, full_type,
1963 object_get_link_property,
1964 check ? object_set_link_property : NULL,
1965 object_release_link_property,
1966 prop);
1967
1968 op->resolve = object_resolve_link_property;
1969
1970 g_free(full_type);
1971 return op;
1972 }
1973
1974 ObjectProperty *
1975 object_property_add_const_link(Object *obj, const char *name,
1976 Object *target)
1977 {
1978 return object_add_link_prop(obj, name,
1979 object_get_typename(target), target,
1980 NULL, OBJ_PROP_LINK_DIRECT);
1981 }
1982
1983 const char *object_get_canonical_path_component(const Object *obj)
1984 {
1985 ObjectProperty *prop = NULL;
1986 GHashTableIter iter;
1987
1988 if (obj->parent == NULL) {
1989 return NULL;
1990 }
1991
1992 g_hash_table_iter_init(&iter, obj->parent->properties);
1993 while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) {
1994 if (!object_property_is_child(prop)) {
1995 continue;
1996 }
1997
1998 if (prop->opaque == obj) {
1999 return prop->name;
2000 }
2001 }
2002
2003 /* obj had a parent but was not a child, should never happen */
2004 g_assert_not_reached();
2005 return NULL;
2006 }
2007
2008 char *object_get_canonical_path(const Object *obj)
2009 {
2010 Object *root = object_get_root();
2011 char *newpath, *path = NULL;
2012
2013 if (obj == root) {
2014 return g_strdup("/");
2015 }
2016
2017 do {
2018 const char *component = object_get_canonical_path_component(obj);
2019
2020 if (!component) {
2021 /* A canonical path must be complete, so discard what was
2022 * collected so far.
2023 */
2024 g_free(path);
2025 return NULL;
2026 }
2027
2028 newpath = g_strdup_printf("/%s%s", component, path ? path : "");
2029 g_free(path);
2030 path = newpath;
2031 obj = obj->parent;
2032 } while (obj != root);
2033
2034 return path;
2035 }
2036
2037 Object *object_resolve_path_component(Object *parent, const char *part)
2038 {
2039 ObjectProperty *prop = object_property_find(parent, part);
2040 if (prop == NULL) {
2041 return NULL;
2042 }
2043
2044 if (prop->resolve) {
2045 return prop->resolve(parent, prop->opaque, part);
2046 } else {
2047 return NULL;
2048 }
2049 }
2050
2051 static Object *object_resolve_abs_path(Object *parent,
2052 char **parts,
2053 const char *typename)
2054 {
2055 Object *child;
2056
2057 if (*parts == NULL) {
2058 return object_dynamic_cast(parent, typename);
2059 }
2060
2061 if (strcmp(*parts, "") == 0) {
2062 return object_resolve_abs_path(parent, parts + 1, typename);
2063 }
2064
2065 child = object_resolve_path_component(parent, *parts);
2066 if (!child) {
2067 return NULL;
2068 }
2069
2070 return object_resolve_abs_path(child, parts + 1, typename);
2071 }
2072
2073 static Object *object_resolve_partial_path(Object *parent,
2074 char **parts,
2075 const char *typename,
2076 bool *ambiguous)
2077 {
2078 Object *obj;
2079 GHashTableIter iter;
2080 ObjectProperty *prop;
2081
2082 obj = object_resolve_abs_path(parent, parts, typename);
2083
2084 g_hash_table_iter_init(&iter, parent->properties);
2085 while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) {
2086 Object *found;
2087
2088 if (!object_property_is_child(prop)) {
2089 continue;
2090 }
2091
2092 found = object_resolve_partial_path(prop->opaque, parts,
2093 typename, ambiguous);
2094 if (found) {
2095 if (obj) {
2096 *ambiguous = true;
2097 return NULL;
2098 }
2099 obj = found;
2100 }
2101
2102 if (*ambiguous) {
2103 return NULL;
2104 }
2105 }
2106
2107 return obj;
2108 }
2109
2110 Object *object_resolve_path_type(const char *path, const char *typename,
2111 bool *ambiguousp)
2112 {
2113 Object *obj;
2114 char **parts;
2115
2116 parts = g_strsplit(path, "/", 0);
2117 assert(parts);
2118
2119 if (parts[0] == NULL || strcmp(parts[0], "") != 0) {
2120 bool ambiguous = false;
2121 obj = object_resolve_partial_path(object_get_root(), parts,
2122 typename, &ambiguous);
2123 if (ambiguousp) {
2124 *ambiguousp = ambiguous;
2125 }
2126 } else {
2127 obj = object_resolve_abs_path(object_get_root(), parts + 1, typename);
2128 }
2129
2130 g_strfreev(parts);
2131
2132 return obj;
2133 }
2134
2135 Object *object_resolve_path(const char *path, bool *ambiguous)
2136 {
2137 return object_resolve_path_type(path, TYPE_OBJECT, ambiguous);
2138 }
2139
2140 typedef struct StringProperty
2141 {
2142 char *(*get)(Object *, Error **);
2143 void (*set)(Object *, const char *, Error **);
2144 } StringProperty;
2145
2146 static void property_get_str(Object *obj, Visitor *v, const char *name,
2147 void *opaque, Error **errp)
2148 {
2149 StringProperty *prop = opaque;
2150 char *value;
2151 Error *err = NULL;
2152
2153 value = prop->get(obj, &err);
2154 if (err) {
2155 error_propagate(errp, err);
2156 return;
2157 }
2158
2159 visit_type_str(v, name, &value, errp);
2160 g_free(value);
2161 }
2162
2163 static void property_set_str(Object *obj, Visitor *v, const char *name,
2164 void *opaque, Error **errp)
2165 {
2166 StringProperty *prop = opaque;
2167 char *value;
2168
2169 if (!visit_type_str(v, name, &value, errp)) {
2170 return;
2171 }
2172
2173 prop->set(obj, value, errp);
2174 g_free(value);
2175 }
2176
2177 static void property_release_str(Object *obj, const char *name,
2178 void *opaque)
2179 {
2180 StringProperty *prop = opaque;
2181 g_free(prop);
2182 }
2183
2184 ObjectProperty *
2185 object_property_add_str(Object *obj, const char *name,
2186 char *(*get)(Object *, Error **),
2187 void (*set)(Object *, const char *, Error **))
2188 {
2189 StringProperty *prop = g_malloc0(sizeof(*prop));
2190
2191 prop->get = get;
2192 prop->set = set;
2193
2194 return object_property_add(obj, name, "string",
2195 get ? property_get_str : NULL,
2196 set ? property_set_str : NULL,
2197 property_release_str,
2198 prop);
2199 }
2200
2201 ObjectProperty *
2202 object_class_property_add_str(ObjectClass *klass, const char *name,
2203 char *(*get)(Object *, Error **),
2204 void (*set)(Object *, const char *,
2205 Error **))
2206 {
2207 StringProperty *prop = g_malloc0(sizeof(*prop));
2208
2209 prop->get = get;
2210 prop->set = set;
2211
2212 return object_class_property_add(klass, name, "string",
2213 get ? property_get_str : NULL,
2214 set ? property_set_str : NULL,
2215 NULL,
2216 prop);
2217 }
2218
2219 typedef struct BoolProperty
2220 {
2221 bool (*get)(Object *, Error **);
2222 void (*set)(Object *, bool, Error **);
2223 } BoolProperty;
2224
2225 static void property_get_bool(Object *obj, Visitor *v, const char *name,
2226 void *opaque, Error **errp)
2227 {
2228 BoolProperty *prop = opaque;
2229 bool value;
2230 Error *err = NULL;
2231
2232 value = prop->get(obj, &err);
2233 if (err) {
2234 error_propagate(errp, err);
2235 return;
2236 }
2237
2238 visit_type_bool(v, name, &value, errp);
2239 }
2240
2241 static void property_set_bool(Object *obj, Visitor *v, const char *name,
2242 void *opaque, Error **errp)
2243 {
2244 BoolProperty *prop = opaque;
2245 bool value;
2246
2247 if (!visit_type_bool(v, name, &value, errp)) {
2248 return;
2249 }
2250
2251 prop->set(obj, value, errp);
2252 }
2253
2254 static void property_release_bool(Object *obj, const char *name,
2255 void *opaque)
2256 {
2257 BoolProperty *prop = opaque;
2258 g_free(prop);
2259 }
2260
2261 ObjectProperty *
2262 object_property_add_bool(Object *obj, const char *name,
2263 bool (*get)(Object *, Error **),
2264 void (*set)(Object *, bool, Error **))
2265 {
2266 BoolProperty *prop = g_malloc0(sizeof(*prop));
2267
2268 prop->get = get;
2269 prop->set = set;
2270
2271 return object_property_add(obj, name, "bool",
2272 get ? property_get_bool : NULL,
2273 set ? property_set_bool : NULL,
2274 property_release_bool,
2275 prop);
2276 }
2277
2278 ObjectProperty *
2279 object_class_property_add_bool(ObjectClass *klass, const char *name,
2280 bool (*get)(Object *, Error **),
2281 void (*set)(Object *, bool, Error **))
2282 {
2283 BoolProperty *prop = g_malloc0(sizeof(*prop));
2284
2285 prop->get = get;
2286 prop->set = set;
2287
2288 return object_class_property_add(klass, name, "bool",
2289 get ? property_get_bool : NULL,
2290 set ? property_set_bool : NULL,
2291 NULL,
2292 prop);
2293 }
2294
2295 static void property_get_enum(Object *obj, Visitor *v, const char *name,
2296 void *opaque, Error **errp)
2297 {
2298 EnumProperty *prop = opaque;
2299 int value;
2300 Error *err = NULL;
2301
2302 value = prop->get(obj, &err);
2303 if (err) {
2304 error_propagate(errp, err);
2305 return;
2306 }
2307
2308 visit_type_enum(v, name, &value, prop->lookup, errp);
2309 }
2310
2311 static void property_set_enum(Object *obj, Visitor *v, const char *name,
2312 void *opaque, Error **errp)
2313 {
2314 EnumProperty *prop = opaque;
2315 int value;
2316
2317 if (!visit_type_enum(v, name, &value, prop->lookup, errp)) {
2318 return;
2319 }
2320 prop->set(obj, value, errp);
2321 }
2322
2323 static void property_release_enum(Object *obj, const char *name,
2324 void *opaque)
2325 {
2326 EnumProperty *prop = opaque;
2327 g_free(prop);
2328 }
2329
2330 ObjectProperty *
2331 object_property_add_enum(Object *obj, const char *name,
2332 const char *typename,
2333 const QEnumLookup *lookup,
2334 int (*get)(Object *, Error **),
2335 void (*set)(Object *, int, Error **))
2336 {
2337 EnumProperty *prop = g_malloc(sizeof(*prop));
2338
2339 prop->lookup = lookup;
2340 prop->get = get;
2341 prop->set = set;
2342
2343 return object_property_add(obj, name, typename,
2344 get ? property_get_enum : NULL,
2345 set ? property_set_enum : NULL,
2346 property_release_enum,
2347 prop);
2348 }
2349
2350 ObjectProperty *
2351 object_class_property_add_enum(ObjectClass *klass, const char *name,
2352 const char *typename,
2353 const QEnumLookup *lookup,
2354 int (*get)(Object *, Error **),
2355 void (*set)(Object *, int, Error **))
2356 {
2357 EnumProperty *prop = g_malloc(sizeof(*prop));
2358
2359 prop->lookup = lookup;
2360 prop->get = get;
2361 prop->set = set;
2362
2363 return object_class_property_add(klass, name, typename,
2364 get ? property_get_enum : NULL,
2365 set ? property_set_enum : NULL,
2366 NULL,
2367 prop);
2368 }
2369
2370 typedef struct TMProperty {
2371 void (*get)(Object *, struct tm *, Error **);
2372 } TMProperty;
2373
2374 static void property_get_tm(Object *obj, Visitor *v, const char *name,
2375 void *opaque, Error **errp)
2376 {
2377 TMProperty *prop = opaque;
2378 Error *err = NULL;
2379 struct tm value;
2380
2381 prop->get(obj, &value, &err);
2382 if (err) {
2383 error_propagate(errp, err);
2384 return;
2385 }
2386
2387 if (!visit_start_struct(v, name, NULL, 0, errp)) {
2388 return;
2389 }
2390 if (!visit_type_int32(v, "tm_year", &value.tm_year, errp)) {
2391 goto out_end;
2392 }
2393 if (!visit_type_int32(v, "tm_mon", &value.tm_mon, errp)) {
2394 goto out_end;
2395 }
2396 if (!visit_type_int32(v, "tm_mday", &value.tm_mday, errp)) {
2397 goto out_end;
2398 }
2399 if (!visit_type_int32(v, "tm_hour", &value.tm_hour, errp)) {
2400 goto out_end;
2401 }
2402 if (!visit_type_int32(v, "tm_min", &value.tm_min, errp)) {
2403 goto out_end;
2404 }
2405 if (!visit_type_int32(v, "tm_sec", &value.tm_sec, errp)) {
2406 goto out_end;
2407 }
2408 visit_check_struct(v, errp);
2409 out_end:
2410 visit_end_struct(v, NULL);
2411 }
2412
2413 static void property_release_tm(Object *obj, const char *name,
2414 void *opaque)
2415 {
2416 TMProperty *prop = opaque;
2417 g_free(prop);
2418 }
2419
2420 ObjectProperty *
2421 object_property_add_tm(Object *obj, const char *name,
2422 void (*get)(Object *, struct tm *, Error **))
2423 {
2424 TMProperty *prop = g_malloc0(sizeof(*prop));
2425
2426 prop->get = get;
2427
2428 return object_property_add(obj, name, "struct tm",
2429 get ? property_get_tm : NULL, NULL,
2430 property_release_tm,
2431 prop);
2432 }
2433
2434 ObjectProperty *
2435 object_class_property_add_tm(ObjectClass *klass, const char *name,
2436 void (*get)(Object *, struct tm *, Error **))
2437 {
2438 TMProperty *prop = g_malloc0(sizeof(*prop));
2439
2440 prop->get = get;
2441
2442 return object_class_property_add(klass, name, "struct tm",
2443 get ? property_get_tm : NULL,
2444 NULL, NULL, prop);
2445 }
2446
2447 static char *object_get_type(Object *obj, Error **errp)
2448 {
2449 return g_strdup(object_get_typename(obj));
2450 }
2451
2452 static void property_get_uint8_ptr(Object *obj, Visitor *v, const char *name,
2453 void *opaque, Error **errp)
2454 {
2455 uint8_t value = *(uint8_t *)opaque;
2456 visit_type_uint8(v, name, &value, errp);
2457 }
2458
2459 static void property_set_uint8_ptr(Object *obj, Visitor *v, const char *name,
2460 void *opaque, Error **errp)
2461 {
2462 uint8_t *field = opaque;
2463 uint8_t value;
2464
2465 if (!visit_type_uint8(v, name, &value, errp)) {
2466 return;
2467 }
2468
2469 *field = value;
2470 }
2471
2472 static void property_get_uint16_ptr(Object *obj, Visitor *v, const char *name,
2473 void *opaque, Error **errp)
2474 {
2475 uint16_t value = *(uint16_t *)opaque;
2476 visit_type_uint16(v, name, &value, errp);
2477 }
2478
2479 static void property_set_uint16_ptr(Object *obj, Visitor *v, const char *name,
2480 void *opaque, Error **errp)
2481 {
2482 uint16_t *field = opaque;
2483 uint16_t value;
2484
2485 if (!visit_type_uint16(v, name, &value, errp)) {
2486 return;
2487 }
2488
2489 *field = value;
2490 }
2491
2492 static void property_get_uint32_ptr(Object *obj, Visitor *v, const char *name,
2493 void *opaque, Error **errp)
2494 {
2495 uint32_t value = *(uint32_t *)opaque;
2496 visit_type_uint32(v, name, &value, errp);
2497 }
2498
2499 static void property_set_uint32_ptr(Object *obj, Visitor *v, const char *name,
2500 void *opaque, Error **errp)
2501 {
2502 uint32_t *field = opaque;
2503 uint32_t value;
2504
2505 if (!visit_type_uint32(v, name, &value, errp)) {
2506 return;
2507 }
2508
2509 *field = value;
2510 }
2511
2512 static void property_get_uint64_ptr(Object *obj, Visitor *v, const char *name,
2513 void *opaque, Error **errp)
2514 {
2515 uint64_t value = *(uint64_t *)opaque;
2516 visit_type_uint64(v, name, &value, errp);
2517 }
2518
2519 static void property_set_uint64_ptr(Object *obj, Visitor *v, const char *name,
2520 void *opaque, Error **errp)
2521 {
2522 uint64_t *field = opaque;
2523 uint64_t value;
2524
2525 if (!visit_type_uint64(v, name, &value, errp)) {
2526 return;
2527 }
2528
2529 *field = value;
2530 }
2531
2532 ObjectProperty *
2533 object_property_add_uint8_ptr(Object *obj, const char *name,
2534 const uint8_t *v,
2535 ObjectPropertyFlags flags)
2536 {
2537 ObjectPropertyAccessor *getter = NULL;
2538 ObjectPropertyAccessor *setter = NULL;
2539
2540 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2541 getter = property_get_uint8_ptr;
2542 }
2543
2544 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2545 setter = property_set_uint8_ptr;
2546 }
2547
2548 return object_property_add(obj, name, "uint8",
2549 getter, setter, NULL, (void *)v);
2550 }
2551
2552 ObjectProperty *
2553 object_class_property_add_uint8_ptr(ObjectClass *klass, const char *name,
2554 const uint8_t *v,
2555 ObjectPropertyFlags flags)
2556 {
2557 ObjectPropertyAccessor *getter = NULL;
2558 ObjectPropertyAccessor *setter = NULL;
2559
2560 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2561 getter = property_get_uint8_ptr;
2562 }
2563
2564 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2565 setter = property_set_uint8_ptr;
2566 }
2567
2568 return object_class_property_add(klass, name, "uint8",
2569 getter, setter, NULL, (void *)v);
2570 }
2571
2572 ObjectProperty *
2573 object_property_add_uint16_ptr(Object *obj, const char *name,
2574 const uint16_t *v,
2575 ObjectPropertyFlags flags)
2576 {
2577 ObjectPropertyAccessor *getter = NULL;
2578 ObjectPropertyAccessor *setter = NULL;
2579
2580 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2581 getter = property_get_uint16_ptr;
2582 }
2583
2584 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2585 setter = property_set_uint16_ptr;
2586 }
2587
2588 return object_property_add(obj, name, "uint16",
2589 getter, setter, NULL, (void *)v);
2590 }
2591
2592 ObjectProperty *
2593 object_class_property_add_uint16_ptr(ObjectClass *klass, const char *name,
2594 const uint16_t *v,
2595 ObjectPropertyFlags flags)
2596 {
2597 ObjectPropertyAccessor *getter = NULL;
2598 ObjectPropertyAccessor *setter = NULL;
2599
2600 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2601 getter = property_get_uint16_ptr;
2602 }
2603
2604 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2605 setter = property_set_uint16_ptr;
2606 }
2607
2608 return object_class_property_add(klass, name, "uint16",
2609 getter, setter, NULL, (void *)v);
2610 }
2611
2612 ObjectProperty *
2613 object_property_add_uint32_ptr(Object *obj, const char *name,
2614 const uint32_t *v,
2615 ObjectPropertyFlags flags)
2616 {
2617 ObjectPropertyAccessor *getter = NULL;
2618 ObjectPropertyAccessor *setter = NULL;
2619
2620 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2621 getter = property_get_uint32_ptr;
2622 }
2623
2624 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2625 setter = property_set_uint32_ptr;
2626 }
2627
2628 return object_property_add(obj, name, "uint32",
2629 getter, setter, NULL, (void *)v);
2630 }
2631
2632 ObjectProperty *
2633 object_class_property_add_uint32_ptr(ObjectClass *klass, const char *name,
2634 const uint32_t *v,
2635 ObjectPropertyFlags flags)
2636 {
2637 ObjectPropertyAccessor *getter = NULL;
2638 ObjectPropertyAccessor *setter = NULL;
2639
2640 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2641 getter = property_get_uint32_ptr;
2642 }
2643
2644 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2645 setter = property_set_uint32_ptr;
2646 }
2647
2648 return object_class_property_add(klass, name, "uint32",
2649 getter, setter, NULL, (void *)v);
2650 }
2651
2652 ObjectProperty *
2653 object_property_add_uint64_ptr(Object *obj, const char *name,
2654 const uint64_t *v,
2655 ObjectPropertyFlags flags)
2656 {
2657 ObjectPropertyAccessor *getter = NULL;
2658 ObjectPropertyAccessor *setter = NULL;
2659
2660 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2661 getter = property_get_uint64_ptr;
2662 }
2663
2664 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2665 setter = property_set_uint64_ptr;
2666 }
2667
2668 return object_property_add(obj, name, "uint64",
2669 getter, setter, NULL, (void *)v);
2670 }
2671
2672 ObjectProperty *
2673 object_class_property_add_uint64_ptr(ObjectClass *klass, const char *name,
2674 const uint64_t *v,
2675 ObjectPropertyFlags flags)
2676 {
2677 ObjectPropertyAccessor *getter = NULL;
2678 ObjectPropertyAccessor *setter = NULL;
2679
2680 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2681 getter = property_get_uint64_ptr;
2682 }
2683
2684 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2685 setter = property_set_uint64_ptr;
2686 }
2687
2688 return object_class_property_add(klass, name, "uint64",
2689 getter, setter, NULL, (void *)v);
2690 }
2691
2692 typedef struct {
2693 Object *target_obj;
2694 char *target_name;
2695 } AliasProperty;
2696
2697 static void property_get_alias(Object *obj, Visitor *v, const char *name,
2698 void *opaque, Error **errp)
2699 {
2700 AliasProperty *prop = opaque;
2701
2702 object_property_get(prop->target_obj, prop->target_name, v, errp);
2703 }
2704
2705 static void property_set_alias(Object *obj, Visitor *v, const char *name,
2706 void *opaque, Error **errp)
2707 {
2708 AliasProperty *prop = opaque;
2709
2710 object_property_set(prop->target_obj, prop->target_name, v, errp);
2711 }
2712
2713 static Object *property_resolve_alias(Object *obj, void *opaque,
2714 const char *part)
2715 {
2716 AliasProperty *prop = opaque;
2717
2718 return object_resolve_path_component(prop->target_obj, prop->target_name);
2719 }
2720
2721 static void property_release_alias(Object *obj, const char *name, void *opaque)
2722 {
2723 AliasProperty *prop = opaque;
2724
2725 g_free(prop->target_name);
2726 g_free(prop);
2727 }
2728
2729 ObjectProperty *
2730 object_property_add_alias(Object *obj, const char *name,
2731 Object *target_obj, const char *target_name)
2732 {
2733 AliasProperty *prop;
2734 ObjectProperty *op;
2735 ObjectProperty *target_prop;
2736 g_autofree char *prop_type = NULL;
2737
2738 target_prop = object_property_find_err(target_obj, target_name,
2739 &error_abort);
2740
2741 if (object_property_is_child(target_prop)) {
2742 prop_type = g_strdup_printf("link%s",
2743 target_prop->type + strlen("child"));
2744 } else {
2745 prop_type = g_strdup(target_prop->type);
2746 }
2747
2748 prop = g_malloc(sizeof(*prop));
2749 prop->target_obj = target_obj;
2750 prop->target_name = g_strdup(target_name);
2751
2752 op = object_property_add(obj, name, prop_type,
2753 property_get_alias,
2754 property_set_alias,
2755 property_release_alias,
2756 prop);
2757 op->resolve = property_resolve_alias;
2758 if (target_prop->defval) {
2759 op->defval = qobject_ref(target_prop->defval);
2760 }
2761
2762 object_property_set_description(obj, op->name,
2763 target_prop->description);
2764 return op;
2765 }
2766
2767 void object_property_set_description(Object *obj, const char *name,
2768 const char *description)
2769 {
2770 ObjectProperty *op;
2771
2772 op = object_property_find_err(obj, name, &error_abort);
2773 g_free(op->description);
2774 op->description = g_strdup(description);
2775 }
2776
2777 void object_class_property_set_description(ObjectClass *klass,
2778 const char *name,
2779 const char *description)
2780 {
2781 ObjectProperty *op;
2782
2783 op = g_hash_table_lookup(klass->properties, name);
2784 g_free(op->description);
2785 op->description = g_strdup(description);
2786 }
2787
2788 static void object_class_init(ObjectClass *klass, void *data)
2789 {
2790 object_class_property_add_str(klass, "type", object_get_type,
2791 NULL);
2792 }
2793
2794 static void register_types(void)
2795 {
2796 static TypeInfo interface_info = {
2797 .name = TYPE_INTERFACE,
2798 .class_size = sizeof(InterfaceClass),
2799 .abstract = true,
2800 };
2801
2802 static TypeInfo object_info = {
2803 .name = TYPE_OBJECT,
2804 .instance_size = sizeof(Object),
2805 .class_init = object_class_init,
2806 .abstract = true,
2807 };
2808
2809 type_interface = type_register_internal(&interface_info);
2810 type_register_internal(&object_info);
2811 }
2812
2813 type_init(register_types)