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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 "qemu/memalign.h"
20#include "qapi/visitor.h"
21#include "qapi/string-input-visitor.h"
22#include "qapi/string-output-visitor.h"
23#include "qapi/qobject-input-visitor.h"
24#include "qapi/forward-visitor.h"
25#include "qapi/qapi-builtin-visit.h"
26#include "qapi/qmp/qerror.h"
27#include "qapi/qmp/qjson.h"
28#include "trace.h"
29
30
31
32#include "qom/qom-qobject.h"
33#include "qapi/qmp/qbool.h"
34#include "qapi/qmp/qnum.h"
35#include "qapi/qmp/qstring.h"
36#include "qemu/error-report.h"
37
38#define MAX_INTERFACES 32
39
40typedef struct InterfaceImpl InterfaceImpl;
41typedef struct TypeImpl TypeImpl;
42
43struct InterfaceImpl
44{
45 const char *typename;
46};
47
48struct TypeImpl
49{
50 const char *name;
51
52 size_t class_size;
53
54 size_t instance_size;
55 size_t instance_align;
56
57 void (*class_init)(ObjectClass *klass, void *data);
58 void (*class_base_init)(ObjectClass *klass, void *data);
59
60 void *class_data;
61
62 void (*instance_init)(Object *obj);
63 void (*instance_post_init)(Object *obj);
64 void (*instance_finalize)(Object *obj);
65
66 bool abstract;
67
68 const char *parent;
69 TypeImpl *parent_type;
70
71 ObjectClass *class;
72
73 int num_interfaces;
74 InterfaceImpl interfaces[MAX_INTERFACES];
75};
76
77static Type type_interface;
78
79static GHashTable *type_table_get(void)
80{
81 static GHashTable *type_table;
82
83 if (type_table == NULL) {
84 type_table = g_hash_table_new(g_str_hash, g_str_equal);
85 }
86
87 return type_table;
88}
89
90static bool enumerating_types;
91
92static void type_table_add(TypeImpl *ti)
93{
94 assert(!enumerating_types);
95 g_hash_table_insert(type_table_get(), (void *)ti->name, ti);
96}
97
98static TypeImpl *type_table_lookup(const char *name)
99{
100 return g_hash_table_lookup(type_table_get(), name);
101}
102
103static TypeImpl *type_new(const TypeInfo *info)
104{
105 TypeImpl *ti = g_malloc0(sizeof(*ti));
106 int i;
107
108 g_assert(info->name != NULL);
109
110 if (type_table_lookup(info->name) != NULL) {
111 fprintf(stderr, "Registering `%s' which already exists\n", info->name);
112 abort();
113 }
114
115 ti->name = g_strdup(info->name);
116 ti->parent = g_strdup(info->parent);
117
118 ti->class_size = info->class_size;
119 ti->instance_size = info->instance_size;
120 ti->instance_align = info->instance_align;
121
122 ti->class_init = info->class_init;
123 ti->class_base_init = info->class_base_init;
124 ti->class_data = info->class_data;
125
126 ti->instance_init = info->instance_init;
127 ti->instance_post_init = info->instance_post_init;
128 ti->instance_finalize = info->instance_finalize;
129
130 ti->abstract = info->abstract;
131
132 for (i = 0; info->interfaces && info->interfaces[i].type; i++) {
133 ti->interfaces[i].typename = g_strdup(info->interfaces[i].type);
134 }
135 ti->num_interfaces = i;
136
137 return ti;
138}
139
140static TypeImpl *type_register_internal(const TypeInfo *info)
141{
142 TypeImpl *ti;
143 ti = type_new(info);
144
145 type_table_add(ti);
146 return ti;
147}
148
149TypeImpl *type_register(const TypeInfo *info)
150{
151 assert(info->parent);
152 return type_register_internal(info);
153}
154
155TypeImpl *type_register_static(const TypeInfo *info)
156{
157 return type_register(info);
158}
159
160void type_register_static_array(const TypeInfo *infos, int nr_infos)
161{
162 int i;
163
164 for (i = 0; i < nr_infos; i++) {
165 type_register_static(&infos[i]);
166 }
167}
168
169static TypeImpl *type_get_by_name(const char *name)
170{
171 if (name == NULL) {
172 return NULL;
173 }
174
175 return type_table_lookup(name);
176}
177
178static TypeImpl *type_get_parent(TypeImpl *type)
179{
180 if (!type->parent_type && type->parent) {
181 type->parent_type = type_get_by_name(type->parent);
182 if (!type->parent_type) {
183 fprintf(stderr, "Type '%s' is missing its parent '%s'\n",
184 type->name, type->parent);
185 abort();
186 }
187 }
188
189 return type->parent_type;
190}
191
192static bool type_has_parent(TypeImpl *type)
193{
194 return (type->parent != NULL);
195}
196
197static size_t type_class_get_size(TypeImpl *ti)
198{
199 if (ti->class_size) {
200 return ti->class_size;
201 }
202
203 if (type_has_parent(ti)) {
204 return type_class_get_size(type_get_parent(ti));
205 }
206
207 return sizeof(ObjectClass);
208}
209
210static size_t type_object_get_size(TypeImpl *ti)
211{
212 if (ti->instance_size) {
213 return ti->instance_size;
214 }
215
216 if (type_has_parent(ti)) {
217 return type_object_get_size(type_get_parent(ti));
218 }
219
220 return 0;
221}
222
223size_t object_type_get_instance_size(const char *typename)
224{
225 TypeImpl *type = type_get_by_name(typename);
226
227 g_assert(type != NULL);
228 return type_object_get_size(type);
229}
230
231static bool type_is_ancestor(TypeImpl *type, TypeImpl *target_type)
232{
233 assert(target_type);
234
235
236 while (type) {
237 if (type == target_type) {
238 return true;
239 }
240
241 type = type_get_parent(type);
242 }
243
244 return false;
245}
246
247static void type_initialize(TypeImpl *ti);
248
249static void type_initialize_interface(TypeImpl *ti, TypeImpl *interface_type,
250 TypeImpl *parent_type)
251{
252 InterfaceClass *new_iface;
253 TypeInfo info = { };
254 TypeImpl *iface_impl;
255
256 info.parent = parent_type->name;
257 info.name = g_strdup_printf("%s::%s", ti->name, interface_type->name);
258 info.abstract = true;
259
260 iface_impl = type_new(&info);
261 iface_impl->parent_type = parent_type;
262 type_initialize(iface_impl);
263 g_free((char *)info.name);
264
265 new_iface = (InterfaceClass *)iface_impl->class;
266 new_iface->concrete_class = ti->class;
267 new_iface->interface_type = interface_type;
268
269 ti->class->interfaces = g_slist_append(ti->class->interfaces, new_iface);
270}
271
272static void object_property_free(gpointer data)
273{
274 ObjectProperty *prop = data;
275
276 if (prop->defval) {
277 qobject_unref(prop->defval);
278 prop->defval = NULL;
279 }
280 g_free(prop->name);
281 g_free(prop->type);
282 g_free(prop->description);
283 g_free(prop);
284}
285
286static void type_initialize(TypeImpl *ti)
287{
288 TypeImpl *parent;
289
290 if (ti->class) {
291 return;
292 }
293
294 ti->class_size = type_class_get_size(ti);
295 ti->instance_size = type_object_get_size(ti);
296
297
298
299 if (ti->instance_size == 0) {
300 ti->abstract = true;
301 }
302 if (type_is_ancestor(ti, type_interface)) {
303 assert(ti->instance_size == 0);
304 assert(ti->abstract);
305 assert(!ti->instance_init);
306 assert(!ti->instance_post_init);
307 assert(!ti->instance_finalize);
308 assert(!ti->num_interfaces);
309 }
310 ti->class = g_malloc0(ti->class_size);
311
312 parent = type_get_parent(ti);
313 if (parent) {
314 type_initialize(parent);
315 GSList *e;
316 int i;
317
318 g_assert(parent->class_size <= ti->class_size);
319 g_assert(parent->instance_size <= ti->instance_size);
320 memcpy(ti->class, parent->class, parent->class_size);
321 ti->class->interfaces = NULL;
322
323 for (e = parent->class->interfaces; e; e = e->next) {
324 InterfaceClass *iface = e->data;
325 ObjectClass *klass = OBJECT_CLASS(iface);
326
327 type_initialize_interface(ti, iface->interface_type, klass->type);
328 }
329
330 for (i = 0; i < ti->num_interfaces; i++) {
331 TypeImpl *t = type_get_by_name(ti->interfaces[i].typename);
332 if (!t) {
333 error_report("missing interface '%s' for object '%s'",
334 ti->interfaces[i].typename, parent->name);
335 abort();
336 }
337 for (e = ti->class->interfaces; e; e = e->next) {
338 TypeImpl *target_type = OBJECT_CLASS(e->data)->type;
339
340 if (type_is_ancestor(target_type, t)) {
341 break;
342 }
343 }
344
345 if (e) {
346 continue;
347 }
348
349 type_initialize_interface(ti, t, t);
350 }
351 }
352
353 ti->class->properties = g_hash_table_new_full(g_str_hash, g_str_equal, NULL,
354 object_property_free);
355
356 ti->class->type = ti;
357
358 while (parent) {
359 if (parent->class_base_init) {
360 parent->class_base_init(ti->class, ti->class_data);
361 }
362 parent = type_get_parent(parent);
363 }
364
365 if (ti->class_init) {
366 ti->class_init(ti->class, ti->class_data);
367 }
368}
369
370static void object_init_with_type(Object *obj, TypeImpl *ti)
371{
372 if (type_has_parent(ti)) {
373 object_init_with_type(obj, type_get_parent(ti));
374 }
375
376 if (ti->instance_init) {
377 ti->instance_init(obj);
378 }
379}
380
381static void object_post_init_with_type(Object *obj, TypeImpl *ti)
382{
383 if (ti->instance_post_init) {
384 ti->instance_post_init(obj);
385 }
386
387 if (type_has_parent(ti)) {
388 object_post_init_with_type(obj, type_get_parent(ti));
389 }
390}
391
392bool object_apply_global_props(Object *obj, const GPtrArray *props,
393 Error **errp)
394{
395 int i;
396
397 if (!props) {
398 return true;
399 }
400
401 for (i = 0; i < props->len; i++) {
402 GlobalProperty *p = g_ptr_array_index(props, i);
403 Error *err = NULL;
404
405 if (object_dynamic_cast(obj, p->driver) == NULL) {
406 continue;
407 }
408 if (p->optional && !object_property_find(obj, p->property)) {
409 continue;
410 }
411 p->used = true;
412 if (!object_property_parse(obj, p->property, p->value, &err)) {
413 error_prepend(&err, "can't apply global %s.%s=%s: ",
414 p->driver, p->property, p->value);
415
416
417
418
419
420 if (errp) {
421 error_propagate(errp, err);
422 return false;
423 } else {
424 warn_report_err(err);
425 }
426 }
427 }
428
429 return true;
430}
431
432
433
434
435
436
437
438
439
440static GPtrArray *object_compat_props[3];
441
442
443
444
445
446
447void object_register_sugar_prop(const char *driver, const char *prop,
448 const char *value, bool optional)
449{
450 GlobalProperty *g;
451 if (!object_compat_props[2]) {
452 object_compat_props[2] = g_ptr_array_new();
453 }
454 g = g_new0(GlobalProperty, 1);
455 g->driver = g_strdup(driver);
456 g->property = g_strdup(prop);
457 g->value = g_strdup(value);
458 g->optional = optional;
459 g_ptr_array_add(object_compat_props[2], g);
460}
461
462
463
464
465
466void object_set_machine_compat_props(GPtrArray *compat_props)
467{
468 assert(!object_compat_props[1]);
469 object_compat_props[1] = compat_props;
470}
471
472
473
474
475
476void object_set_accelerator_compat_props(GPtrArray *compat_props)
477{
478 assert(!object_compat_props[0]);
479 object_compat_props[0] = compat_props;
480}
481
482void object_apply_compat_props(Object *obj)
483{
484 int i;
485
486 for (i = 0; i < ARRAY_SIZE(object_compat_props); i++) {
487 object_apply_global_props(obj, object_compat_props[i],
488 i == 2 ? &error_fatal : &error_abort);
489 }
490}
491
492static void object_class_property_init_all(Object *obj)
493{
494 ObjectPropertyIterator iter;
495 ObjectProperty *prop;
496
497 object_class_property_iter_init(&iter, object_get_class(obj));
498 while ((prop = object_property_iter_next(&iter))) {
499 if (prop->init) {
500 prop->init(obj, prop);
501 }
502 }
503}
504
505static void object_initialize_with_type(Object *obj, size_t size, TypeImpl *type)
506{
507 type_initialize(type);
508
509 g_assert(type->instance_size >= sizeof(Object));
510 g_assert(type->abstract == false);
511 g_assert(size >= type->instance_size);
512
513 memset(obj, 0, type->instance_size);
514 obj->class = type->class;
515 object_ref(obj);
516 object_class_property_init_all(obj);
517 obj->properties = g_hash_table_new_full(g_str_hash, g_str_equal,
518 NULL, object_property_free);
519 object_init_with_type(obj, type);
520 object_post_init_with_type(obj, type);
521}
522
523void object_initialize(void *data, size_t size, const char *typename)
524{
525 TypeImpl *type = type_get_by_name(typename);
526
527#ifdef CONFIG_MODULES
528 if (!type) {
529 module_load_qom_one(typename);
530 type = type_get_by_name(typename);
531 }
532#endif
533 if (!type) {
534 error_report("missing object type '%s'", typename);
535 abort();
536 }
537
538 object_initialize_with_type(data, size, type);
539}
540
541bool object_initialize_child_with_props(Object *parentobj,
542 const char *propname,
543 void *childobj, size_t size,
544 const char *type,
545 Error **errp, ...)
546{
547 va_list vargs;
548 bool ok;
549
550 va_start(vargs, errp);
551 ok = object_initialize_child_with_propsv(parentobj, propname,
552 childobj, size, type, errp,
553 vargs);
554 va_end(vargs);
555 return ok;
556}
557
558bool object_initialize_child_with_propsv(Object *parentobj,
559 const char *propname,
560 void *childobj, size_t size,
561 const char *type,
562 Error **errp, va_list vargs)
563{
564 bool ok = false;
565 Object *obj;
566 UserCreatable *uc;
567
568 object_initialize(childobj, size, type);
569 obj = OBJECT(childobj);
570
571 if (!object_set_propv(obj, errp, vargs)) {
572 goto out;
573 }
574
575 object_property_add_child(parentobj, propname, obj);
576
577 uc = (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE);
578 if (uc) {
579 if (!user_creatable_complete(uc, errp)) {
580 object_unparent(obj);
581 goto out;
582 }
583 }
584
585 ok = true;
586
587out:
588
589
590
591
592
593
594
595
596 object_unref(obj);
597 return ok;
598}
599
600void object_initialize_child_internal(Object *parent,
601 const char *propname,
602 void *child, size_t size,
603 const char *type)
604{
605 object_initialize_child_with_props(parent, propname, child, size, type,
606 &error_abort, NULL);
607}
608
609static inline bool object_property_is_child(ObjectProperty *prop)
610{
611 return strstart(prop->type, "child<", NULL);
612}
613
614static void object_property_del_all(Object *obj)
615{
616 g_autoptr(GHashTable) done = g_hash_table_new(NULL, NULL);
617 ObjectProperty *prop;
618 ObjectPropertyIterator iter;
619 bool released;
620
621 do {
622 released = false;
623 object_property_iter_init(&iter, obj);
624 while ((prop = object_property_iter_next(&iter)) != NULL) {
625 if (g_hash_table_add(done, prop)) {
626 if (prop->release) {
627 prop->release(obj, prop->name, prop->opaque);
628 released = true;
629 break;
630 }
631 }
632 }
633 } while (released);
634
635 g_hash_table_unref(obj->properties);
636}
637
638static void object_property_del_child(Object *obj, Object *child)
639{
640 ObjectProperty *prop;
641 GHashTableIter iter;
642 gpointer key, value;
643
644 g_hash_table_iter_init(&iter, obj->properties);
645 while (g_hash_table_iter_next(&iter, &key, &value)) {
646 prop = value;
647 if (object_property_is_child(prop) && prop->opaque == child) {
648 if (prop->release) {
649 prop->release(obj, prop->name, prop->opaque);
650 prop->release = NULL;
651 }
652 break;
653 }
654 }
655 g_hash_table_iter_init(&iter, obj->properties);
656 while (g_hash_table_iter_next(&iter, &key, &value)) {
657 prop = value;
658 if (object_property_is_child(prop) && prop->opaque == child) {
659 g_hash_table_iter_remove(&iter);
660 break;
661 }
662 }
663}
664
665void object_unparent(Object *obj)
666{
667 if (obj->parent) {
668 object_property_del_child(obj->parent, obj);
669 }
670}
671
672static void object_deinit(Object *obj, TypeImpl *type)
673{
674 if (type->instance_finalize) {
675 type->instance_finalize(obj);
676 }
677
678 if (type_has_parent(type)) {
679 object_deinit(obj, type_get_parent(type));
680 }
681}
682
683static void object_finalize(void *data)
684{
685 Object *obj = data;
686 TypeImpl *ti = obj->class->type;
687
688 object_property_del_all(obj);
689 object_deinit(obj, ti);
690
691 g_assert(obj->ref == 0);
692 g_assert(obj->parent == NULL);
693 if (obj->free) {
694 obj->free(obj);
695 }
696}
697
698
699#if __STDC_VERSION__ >= 201112L
700typedef max_align_t qemu_max_align_t;
701#else
702typedef union {
703 long l;
704 void *p;
705 double d;
706 long double ld;
707} qemu_max_align_t;
708#endif
709
710static Object *object_new_with_type(Type type)
711{
712 Object *obj;
713 size_t size, align;
714 void (*obj_free)(void *);
715
716 g_assert(type != NULL);
717 type_initialize(type);
718
719 size = type->instance_size;
720 align = type->instance_align;
721
722
723
724
725
726 if (likely(align <= __alignof__(qemu_max_align_t))) {
727 obj = g_malloc(size);
728 obj_free = g_free;
729 } else {
730 obj = qemu_memalign(align, size);
731 obj_free = qemu_vfree;
732 }
733
734 object_initialize_with_type(obj, size, type);
735 obj->free = obj_free;
736
737 return obj;
738}
739
740Object *object_new_with_class(ObjectClass *klass)
741{
742 return object_new_with_type(klass->type);
743}
744
745Object *object_new(const char *typename)
746{
747 TypeImpl *ti = type_get_by_name(typename);
748
749 return object_new_with_type(ti);
750}
751
752
753Object *object_new_with_props(const char *typename,
754 Object *parent,
755 const char *id,
756 Error **errp,
757 ...)
758{
759 va_list vargs;
760 Object *obj;
761
762 va_start(vargs, errp);
763 obj = object_new_with_propv(typename, parent, id, errp, vargs);
764 va_end(vargs);
765
766 return obj;
767}
768
769
770Object *object_new_with_propv(const char *typename,
771 Object *parent,
772 const char *id,
773 Error **errp,
774 va_list vargs)
775{
776 Object *obj;
777 ObjectClass *klass;
778 UserCreatable *uc;
779
780 klass = object_class_by_name(typename);
781 if (!klass) {
782 error_setg(errp, "invalid object type: %s", typename);
783 return NULL;
784 }
785
786 if (object_class_is_abstract(klass)) {
787 error_setg(errp, "object type '%s' is abstract", typename);
788 return NULL;
789 }
790 obj = object_new_with_type(klass->type);
791
792 if (!object_set_propv(obj, errp, vargs)) {
793 goto error;
794 }
795
796 if (id != NULL) {
797 object_property_add_child(parent, id, obj);
798 }
799
800 uc = (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE);
801 if (uc) {
802 if (!user_creatable_complete(uc, errp)) {
803 if (id != NULL) {
804 object_unparent(obj);
805 }
806 goto error;
807 }
808 }
809
810 object_unref(obj);
811 return obj;
812
813 error:
814 object_unref(obj);
815 return NULL;
816}
817
818
819bool object_set_props(Object *obj,
820 Error **errp,
821 ...)
822{
823 va_list vargs;
824 bool ret;
825
826 va_start(vargs, errp);
827 ret = object_set_propv(obj, errp, vargs);
828 va_end(vargs);
829
830 return ret;
831}
832
833
834bool object_set_propv(Object *obj,
835 Error **errp,
836 va_list vargs)
837{
838 const char *propname;
839
840 propname = va_arg(vargs, char *);
841 while (propname != NULL) {
842 const char *value = va_arg(vargs, char *);
843
844 g_assert(value != NULL);
845 if (!object_property_parse(obj, propname, value, errp)) {
846 return false;
847 }
848 propname = va_arg(vargs, char *);
849 }
850
851 return true;
852}
853
854
855Object *object_dynamic_cast(Object *obj, const char *typename)
856{
857 if (obj && object_class_dynamic_cast(object_get_class(obj), typename)) {
858 return obj;
859 }
860
861 return NULL;
862}
863
864Object *object_dynamic_cast_assert(Object *obj, const char *typename,
865 const char *file, int line, const char *func)
866{
867 trace_object_dynamic_cast_assert(obj ? obj->class->type->name : "(null)",
868 typename, file, line, func);
869
870#ifdef CONFIG_QOM_CAST_DEBUG
871 int i;
872 Object *inst;
873
874 for (i = 0; obj && i < OBJECT_CLASS_CAST_CACHE; i++) {
875 if (qatomic_read(&obj->class->object_cast_cache[i]) == typename) {
876 goto out;
877 }
878 }
879
880 inst = object_dynamic_cast(obj, typename);
881
882 if (!inst && obj) {
883 fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n",
884 file, line, func, obj, typename);
885 abort();
886 }
887
888 assert(obj == inst);
889
890 if (obj && obj == inst) {
891 for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) {
892 qatomic_set(&obj->class->object_cast_cache[i - 1],
893 qatomic_read(&obj->class->object_cast_cache[i]));
894 }
895 qatomic_set(&obj->class->object_cast_cache[i - 1], typename);
896 }
897
898out:
899#endif
900 return obj;
901}
902
903ObjectClass *object_class_dynamic_cast(ObjectClass *class,
904 const char *typename)
905{
906 ObjectClass *ret = NULL;
907 TypeImpl *target_type;
908 TypeImpl *type;
909
910 if (!class) {
911 return NULL;
912 }
913
914
915 type = class->type;
916 if (type->name == typename) {
917 return class;
918 }
919
920 target_type = type_get_by_name(typename);
921 if (!target_type) {
922
923 return NULL;
924 }
925
926 if (type->class->interfaces &&
927 type_is_ancestor(target_type, type_interface)) {
928 int found = 0;
929 GSList *i;
930
931 for (i = class->interfaces; i; i = i->next) {
932 ObjectClass *target_class = i->data;
933
934 if (type_is_ancestor(target_class->type, target_type)) {
935 ret = target_class;
936 found++;
937 }
938 }
939
940
941 if (found > 1) {
942 ret = NULL;
943 }
944 } else if (type_is_ancestor(type, target_type)) {
945 ret = class;
946 }
947
948 return ret;
949}
950
951ObjectClass *object_class_dynamic_cast_assert(ObjectClass *class,
952 const char *typename,
953 const char *file, int line,
954 const char *func)
955{
956 ObjectClass *ret;
957
958 trace_object_class_dynamic_cast_assert(class ? class->type->name : "(null)",
959 typename, file, line, func);
960
961#ifdef CONFIG_QOM_CAST_DEBUG
962 int i;
963
964 for (i = 0; class && i < OBJECT_CLASS_CAST_CACHE; i++) {
965 if (qatomic_read(&class->class_cast_cache[i]) == typename) {
966 ret = class;
967 goto out;
968 }
969 }
970#else
971 if (!class || !class->interfaces) {
972 return class;
973 }
974#endif
975
976 ret = object_class_dynamic_cast(class, typename);
977 if (!ret && class) {
978 fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n",
979 file, line, func, class, typename);
980 abort();
981 }
982
983#ifdef CONFIG_QOM_CAST_DEBUG
984 if (class && ret == class) {
985 for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) {
986 qatomic_set(&class->class_cast_cache[i - 1],
987 qatomic_read(&class->class_cast_cache[i]));
988 }
989 qatomic_set(&class->class_cast_cache[i - 1], typename);
990 }
991out:
992#endif
993 return ret;
994}
995
996const char *object_get_typename(const Object *obj)
997{
998 return obj->class->type->name;
999}
1000
1001ObjectClass *object_get_class(Object *obj)
1002{
1003 return obj->class;
1004}
1005
1006bool object_class_is_abstract(ObjectClass *klass)
1007{
1008 return klass->type->abstract;
1009}
1010
1011const char *object_class_get_name(ObjectClass *klass)
1012{
1013 return klass->type->name;
1014}
1015
1016ObjectClass *object_class_by_name(const char *typename)
1017{
1018 TypeImpl *type = type_get_by_name(typename);
1019
1020 if (!type) {
1021 return NULL;
1022 }
1023
1024 type_initialize(type);
1025
1026 return type->class;
1027}
1028
1029ObjectClass *module_object_class_by_name(const char *typename)
1030{
1031 ObjectClass *oc;
1032
1033 oc = object_class_by_name(typename);
1034#ifdef CONFIG_MODULES
1035 if (!oc) {
1036 module_load_qom_one(typename);
1037 oc = object_class_by_name(typename);
1038 }
1039#endif
1040 return oc;
1041}
1042
1043ObjectClass *object_class_get_parent(ObjectClass *class)
1044{
1045 TypeImpl *type = type_get_parent(class->type);
1046
1047 if (!type) {
1048 return NULL;
1049 }
1050
1051 type_initialize(type);
1052
1053 return type->class;
1054}
1055
1056typedef struct OCFData
1057{
1058 void (*fn)(ObjectClass *klass, void *opaque);
1059 const char *implements_type;
1060 bool include_abstract;
1061 void *opaque;
1062} OCFData;
1063
1064static void object_class_foreach_tramp(gpointer key, gpointer value,
1065 gpointer opaque)
1066{
1067 OCFData *data = opaque;
1068 TypeImpl *type = value;
1069 ObjectClass *k;
1070
1071 type_initialize(type);
1072 k = type->class;
1073
1074 if (!data->include_abstract && type->abstract) {
1075 return;
1076 }
1077
1078 if (data->implements_type &&
1079 !object_class_dynamic_cast(k, data->implements_type)) {
1080 return;
1081 }
1082
1083 data->fn(k, data->opaque);
1084}
1085
1086void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque),
1087 const char *implements_type, bool include_abstract,
1088 void *opaque)
1089{
1090 OCFData data = { fn, implements_type, include_abstract, opaque };
1091
1092 enumerating_types = true;
1093 g_hash_table_foreach(type_table_get(), object_class_foreach_tramp, &data);
1094 enumerating_types = false;
1095}
1096
1097static int do_object_child_foreach(Object *obj,
1098 int (*fn)(Object *child, void *opaque),
1099 void *opaque, bool recurse)
1100{
1101 GHashTableIter iter;
1102 ObjectProperty *prop;
1103 int ret = 0;
1104
1105 g_hash_table_iter_init(&iter, obj->properties);
1106 while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) {
1107 if (object_property_is_child(prop)) {
1108 Object *child = prop->opaque;
1109
1110 ret = fn(child, opaque);
1111 if (ret != 0) {
1112 break;
1113 }
1114 if (recurse) {
1115 ret = do_object_child_foreach(child, fn, opaque, true);
1116 if (ret != 0) {
1117 break;
1118 }
1119 }
1120 }
1121 }
1122 return ret;
1123}
1124
1125int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque),
1126 void *opaque)
1127{
1128 return do_object_child_foreach(obj, fn, opaque, false);
1129}
1130
1131int object_child_foreach_recursive(Object *obj,
1132 int (*fn)(Object *child, void *opaque),
1133 void *opaque)
1134{
1135 return do_object_child_foreach(obj, fn, opaque, true);
1136}
1137
1138static void object_class_get_list_tramp(ObjectClass *klass, void *opaque)
1139{
1140 GSList **list = opaque;
1141
1142 *list = g_slist_prepend(*list, klass);
1143}
1144
1145GSList *object_class_get_list(const char *implements_type,
1146 bool include_abstract)
1147{
1148 GSList *list = NULL;
1149
1150 object_class_foreach(object_class_get_list_tramp,
1151 implements_type, include_abstract, &list);
1152 return list;
1153}
1154
1155static gint object_class_cmp(gconstpointer a, gconstpointer b)
1156{
1157 return strcasecmp(object_class_get_name((ObjectClass *)a),
1158 object_class_get_name((ObjectClass *)b));
1159}
1160
1161GSList *object_class_get_list_sorted(const char *implements_type,
1162 bool include_abstract)
1163{
1164 return g_slist_sort(object_class_get_list(implements_type, include_abstract),
1165 object_class_cmp);
1166}
1167
1168Object *object_ref(void *objptr)
1169{
1170 Object *obj = OBJECT(objptr);
1171 uint32_t ref;
1172
1173 if (!obj) {
1174 return NULL;
1175 }
1176 ref = qatomic_fetch_inc(&obj->ref);
1177
1178 g_assert(ref < INT_MAX);
1179 return obj;
1180}
1181
1182void object_unref(void *objptr)
1183{
1184 Object *obj = OBJECT(objptr);
1185 if (!obj) {
1186 return;
1187 }
1188 g_assert(obj->ref > 0);
1189
1190
1191 if (qatomic_fetch_dec(&obj->ref) == 1) {
1192 object_finalize(obj);
1193 }
1194}
1195
1196ObjectProperty *
1197object_property_try_add(Object *obj, const char *name, const char *type,
1198 ObjectPropertyAccessor *get,
1199 ObjectPropertyAccessor *set,
1200 ObjectPropertyRelease *release,
1201 void *opaque, Error **errp)
1202{
1203 ObjectProperty *prop;
1204 size_t name_len = strlen(name);
1205
1206 if (name_len >= 3 && !memcmp(name + name_len - 3, "[*]", 4)) {
1207 int i;
1208 ObjectProperty *ret = NULL;
1209 char *name_no_array = g_strdup(name);
1210
1211 name_no_array[name_len - 3] = '\0';
1212 for (i = 0; i < INT16_MAX; ++i) {
1213 char *full_name = g_strdup_printf("%s[%d]", name_no_array, i);
1214
1215 ret = object_property_try_add(obj, full_name, type, get, set,
1216 release, opaque, NULL);
1217 g_free(full_name);
1218 if (ret) {
1219 break;
1220 }
1221 }
1222 g_free(name_no_array);
1223 assert(ret);
1224 return ret;
1225 }
1226
1227 if (object_property_find(obj, name) != NULL) {
1228 error_setg(errp, "attempt to add duplicate property '%s' to object (type '%s')",
1229 name, object_get_typename(obj));
1230 return NULL;
1231 }
1232
1233 prop = g_malloc0(sizeof(*prop));
1234
1235 prop->name = g_strdup(name);
1236 prop->type = g_strdup(type);
1237
1238 prop->get = get;
1239 prop->set = set;
1240 prop->release = release;
1241 prop->opaque = opaque;
1242
1243 g_hash_table_insert(obj->properties, prop->name, prop);
1244 return prop;
1245}
1246
1247ObjectProperty *
1248object_property_add(Object *obj, const char *name, const char *type,
1249 ObjectPropertyAccessor *get,
1250 ObjectPropertyAccessor *set,
1251 ObjectPropertyRelease *release,
1252 void *opaque)
1253{
1254 return object_property_try_add(obj, name, type, get, set, release,
1255 opaque, &error_abort);
1256}
1257
1258ObjectProperty *
1259object_class_property_add(ObjectClass *klass,
1260 const char *name,
1261 const char *type,
1262 ObjectPropertyAccessor *get,
1263 ObjectPropertyAccessor *set,
1264 ObjectPropertyRelease *release,
1265 void *opaque)
1266{
1267 ObjectProperty *prop;
1268
1269 assert(!object_class_property_find(klass, name));
1270
1271 prop = g_malloc0(sizeof(*prop));
1272
1273 prop->name = g_strdup(name);
1274 prop->type = g_strdup(type);
1275
1276 prop->get = get;
1277 prop->set = set;
1278 prop->release = release;
1279 prop->opaque = opaque;
1280
1281 g_hash_table_insert(klass->properties, prop->name, prop);
1282
1283 return prop;
1284}
1285
1286ObjectProperty *object_property_find(Object *obj, const char *name)
1287{
1288 ObjectProperty *prop;
1289 ObjectClass *klass = object_get_class(obj);
1290
1291 prop = object_class_property_find(klass, name);
1292 if (prop) {
1293 return prop;
1294 }
1295
1296 return g_hash_table_lookup(obj->properties, name);
1297}
1298
1299ObjectProperty *object_property_find_err(Object *obj, const char *name,
1300 Error **errp)
1301{
1302 ObjectProperty *prop = object_property_find(obj, name);
1303 if (!prop) {
1304 error_setg(errp, "Property '%s.%s' not found",
1305 object_get_typename(obj), name);
1306 }
1307 return prop;
1308}
1309
1310void object_property_iter_init(ObjectPropertyIterator *iter,
1311 Object *obj)
1312{
1313 g_hash_table_iter_init(&iter->iter, obj->properties);
1314 iter->nextclass = object_get_class(obj);
1315}
1316
1317ObjectProperty *object_property_iter_next(ObjectPropertyIterator *iter)
1318{
1319 gpointer key, val;
1320 while (!g_hash_table_iter_next(&iter->iter, &key, &val)) {
1321 if (!iter->nextclass) {
1322 return NULL;
1323 }
1324 g_hash_table_iter_init(&iter->iter, iter->nextclass->properties);
1325 iter->nextclass = object_class_get_parent(iter->nextclass);
1326 }
1327 return val;
1328}
1329
1330void object_class_property_iter_init(ObjectPropertyIterator *iter,
1331 ObjectClass *klass)
1332{
1333 g_hash_table_iter_init(&iter->iter, klass->properties);
1334 iter->nextclass = object_class_get_parent(klass);
1335}
1336
1337ObjectProperty *object_class_property_find(ObjectClass *klass, const char *name)
1338{
1339 ObjectClass *parent_klass;
1340
1341 parent_klass = object_class_get_parent(klass);
1342 if (parent_klass) {
1343 ObjectProperty *prop =
1344 object_class_property_find(parent_klass, name);
1345 if (prop) {
1346 return prop;
1347 }
1348 }
1349
1350 return g_hash_table_lookup(klass->properties, name);
1351}
1352
1353ObjectProperty *object_class_property_find_err(ObjectClass *klass,
1354 const char *name,
1355 Error **errp)
1356{
1357 ObjectProperty *prop = object_class_property_find(klass, name);
1358 if (!prop) {
1359 error_setg(errp, "Property '.%s' not found", name);
1360 }
1361 return prop;
1362}
1363
1364
1365void object_property_del(Object *obj, const char *name)
1366{
1367 ObjectProperty *prop = g_hash_table_lookup(obj->properties, name);
1368
1369 if (prop->release) {
1370 prop->release(obj, name, prop->opaque);
1371 }
1372 g_hash_table_remove(obj->properties, name);
1373}
1374
1375bool object_property_get(Object *obj, const char *name, Visitor *v,
1376 Error **errp)
1377{
1378 Error *err = NULL;
1379 ObjectProperty *prop = object_property_find_err(obj, name, errp);
1380
1381 if (prop == NULL) {
1382 return false;
1383 }
1384
1385 if (!prop->get) {
1386 error_setg(errp, QERR_PERMISSION_DENIED);
1387 return false;
1388 }
1389 prop->get(obj, v, name, prop->opaque, &err);
1390 error_propagate(errp, err);
1391 return !err;
1392}
1393
1394bool object_property_set(Object *obj, const char *name, Visitor *v,
1395 Error **errp)
1396{
1397 ERRP_GUARD();
1398 ObjectProperty *prop = object_property_find_err(obj, name, errp);
1399
1400 if (prop == NULL) {
1401 return false;
1402 }
1403
1404 if (!prop->set) {
1405 error_setg(errp, QERR_PERMISSION_DENIED);
1406 return false;
1407 }
1408 prop->set(obj, v, name, prop->opaque, errp);
1409 return !*errp;
1410}
1411
1412bool object_property_set_str(Object *obj, const char *name,
1413 const char *value, Error **errp)
1414{
1415 QString *qstr = qstring_from_str(value);
1416 bool ok = object_property_set_qobject(obj, name, QOBJECT(qstr), errp);
1417
1418 qobject_unref(qstr);
1419 return ok;
1420}
1421
1422char *object_property_get_str(Object *obj, const char *name,
1423 Error **errp)
1424{
1425 QObject *ret = object_property_get_qobject(obj, name, errp);
1426 QString *qstring;
1427 char *retval;
1428
1429 if (!ret) {
1430 return NULL;
1431 }
1432 qstring = qobject_to(QString, ret);
1433 if (!qstring) {
1434 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "string");
1435 retval = NULL;
1436 } else {
1437 retval = g_strdup(qstring_get_str(qstring));
1438 }
1439
1440 qobject_unref(ret);
1441 return retval;
1442}
1443
1444bool object_property_set_link(Object *obj, const char *name,
1445 Object *value, Error **errp)
1446{
1447 g_autofree char *path = NULL;
1448
1449 if (value) {
1450 path = object_get_canonical_path(value);
1451 }
1452 return object_property_set_str(obj, name, path ?: "", errp);
1453}
1454
1455Object *object_property_get_link(Object *obj, const char *name,
1456 Error **errp)
1457{
1458 char *str = object_property_get_str(obj, name, errp);
1459 Object *target = NULL;
1460
1461 if (str && *str) {
1462 target = object_resolve_path(str, NULL);
1463 if (!target) {
1464 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
1465 "Device '%s' not found", str);
1466 }
1467 }
1468
1469 g_free(str);
1470 return target;
1471}
1472
1473bool object_property_set_bool(Object *obj, const char *name,
1474 bool value, Error **errp)
1475{
1476 QBool *qbool = qbool_from_bool(value);
1477 bool ok = object_property_set_qobject(obj, name, QOBJECT(qbool), errp);
1478
1479 qobject_unref(qbool);
1480 return ok;
1481}
1482
1483bool object_property_get_bool(Object *obj, const char *name,
1484 Error **errp)
1485{
1486 QObject *ret = object_property_get_qobject(obj, name, errp);
1487 QBool *qbool;
1488 bool retval;
1489
1490 if (!ret) {
1491 return false;
1492 }
1493 qbool = qobject_to(QBool, ret);
1494 if (!qbool) {
1495 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "boolean");
1496 retval = false;
1497 } else {
1498 retval = qbool_get_bool(qbool);
1499 }
1500
1501 qobject_unref(ret);
1502 return retval;
1503}
1504
1505bool object_property_set_int(Object *obj, const char *name,
1506 int64_t value, Error **errp)
1507{
1508 QNum *qnum = qnum_from_int(value);
1509 bool ok = object_property_set_qobject(obj, name, QOBJECT(qnum), errp);
1510
1511 qobject_unref(qnum);
1512 return ok;
1513}
1514
1515int64_t object_property_get_int(Object *obj, const char *name,
1516 Error **errp)
1517{
1518 QObject *ret = object_property_get_qobject(obj, name, errp);
1519 QNum *qnum;
1520 int64_t retval;
1521
1522 if (!ret) {
1523 return -1;
1524 }
1525
1526 qnum = qobject_to(QNum, ret);
1527 if (!qnum || !qnum_get_try_int(qnum, &retval)) {
1528 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "int");
1529 retval = -1;
1530 }
1531
1532 qobject_unref(ret);
1533 return retval;
1534}
1535
1536static void object_property_init_defval(Object *obj, ObjectProperty *prop)
1537{
1538 Visitor *v = qobject_input_visitor_new(prop->defval);
1539
1540 assert(prop->set != NULL);
1541 prop->set(obj, v, prop->name, prop->opaque, &error_abort);
1542
1543 visit_free(v);
1544}
1545
1546static void object_property_set_default(ObjectProperty *prop, QObject *defval)
1547{
1548 assert(!prop->defval);
1549 assert(!prop->init);
1550
1551 prop->defval = defval;
1552 prop->init = object_property_init_defval;
1553}
1554
1555void object_property_set_default_bool(ObjectProperty *prop, bool value)
1556{
1557 object_property_set_default(prop, QOBJECT(qbool_from_bool(value)));
1558}
1559
1560void object_property_set_default_str(ObjectProperty *prop, const char *value)
1561{
1562 object_property_set_default(prop, QOBJECT(qstring_from_str(value)));
1563}
1564
1565void object_property_set_default_int(ObjectProperty *prop, int64_t value)
1566{
1567 object_property_set_default(prop, QOBJECT(qnum_from_int(value)));
1568}
1569
1570void object_property_set_default_uint(ObjectProperty *prop, uint64_t value)
1571{
1572 object_property_set_default(prop, QOBJECT(qnum_from_uint(value)));
1573}
1574
1575bool object_property_set_uint(Object *obj, const char *name,
1576 uint64_t value, Error **errp)
1577{
1578 QNum *qnum = qnum_from_uint(value);
1579 bool ok = object_property_set_qobject(obj, name, QOBJECT(qnum), errp);
1580
1581 qobject_unref(qnum);
1582 return ok;
1583}
1584
1585uint64_t object_property_get_uint(Object *obj, const char *name,
1586 Error **errp)
1587{
1588 QObject *ret = object_property_get_qobject(obj, name, errp);
1589 QNum *qnum;
1590 uint64_t retval;
1591
1592 if (!ret) {
1593 return 0;
1594 }
1595 qnum = qobject_to(QNum, ret);
1596 if (!qnum || !qnum_get_try_uint(qnum, &retval)) {
1597 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "uint");
1598 retval = 0;
1599 }
1600
1601 qobject_unref(ret);
1602 return retval;
1603}
1604
1605typedef struct EnumProperty {
1606 const QEnumLookup *lookup;
1607 int (*get)(Object *, Error **);
1608 void (*set)(Object *, int, Error **);
1609} EnumProperty;
1610
1611int object_property_get_enum(Object *obj, const char *name,
1612 const char *typename, Error **errp)
1613{
1614 char *str;
1615 int ret;
1616 ObjectProperty *prop = object_property_find_err(obj, name, errp);
1617 EnumProperty *enumprop;
1618
1619 if (prop == NULL) {
1620 return -1;
1621 }
1622
1623 if (!g_str_equal(prop->type, typename)) {
1624 error_setg(errp, "Property %s on %s is not '%s' enum type",
1625 name, object_class_get_name(
1626 object_get_class(obj)), typename);
1627 return -1;
1628 }
1629
1630 enumprop = prop->opaque;
1631
1632 str = object_property_get_str(obj, name, errp);
1633 if (!str) {
1634 return -1;
1635 }
1636
1637 ret = qapi_enum_parse(enumprop->lookup, str, -1, errp);
1638 g_free(str);
1639
1640 return ret;
1641}
1642
1643bool object_property_parse(Object *obj, const char *name,
1644 const char *string, Error **errp)
1645{
1646 Visitor *v = string_input_visitor_new(string);
1647 bool ok = object_property_set(obj, name, v, errp);
1648
1649 visit_free(v);
1650 return ok;
1651}
1652
1653char *object_property_print(Object *obj, const char *name, bool human,
1654 Error **errp)
1655{
1656 Visitor *v;
1657 char *string = NULL;
1658
1659 v = string_output_visitor_new(human, &string);
1660 if (!object_property_get(obj, name, v, errp)) {
1661 goto out;
1662 }
1663
1664 visit_complete(v, &string);
1665
1666out:
1667 visit_free(v);
1668 return string;
1669}
1670
1671const char *object_property_get_type(Object *obj, const char *name, Error **errp)
1672{
1673 ObjectProperty *prop = object_property_find_err(obj, name, errp);
1674 if (prop == NULL) {
1675 return NULL;
1676 }
1677
1678 return prop->type;
1679}
1680
1681Object *object_get_root(void)
1682{
1683 static Object *root;
1684
1685 if (!root) {
1686 root = object_new("container");
1687 }
1688
1689 return root;
1690}
1691
1692Object *object_get_objects_root(void)
1693{
1694 return container_get(object_get_root(), "/objects");
1695}
1696
1697Object *object_get_internal_root(void)
1698{
1699 static Object *internal_root;
1700
1701 if (!internal_root) {
1702 internal_root = object_new("container");
1703 }
1704
1705 return internal_root;
1706}
1707
1708static void object_get_child_property(Object *obj, Visitor *v,
1709 const char *name, void *opaque,
1710 Error **errp)
1711{
1712 Object *child = opaque;
1713 char *path;
1714
1715 path = object_get_canonical_path(child);
1716 visit_type_str(v, name, &path, errp);
1717 g_free(path);
1718}
1719
1720static Object *object_resolve_child_property(Object *parent, void *opaque,
1721 const char *part)
1722{
1723 return opaque;
1724}
1725
1726static void object_finalize_child_property(Object *obj, const char *name,
1727 void *opaque)
1728{
1729 Object *child = opaque;
1730
1731 if (child->class->unparent) {
1732 (child->class->unparent)(child);
1733 }
1734 child->parent = NULL;
1735 object_unref(child);
1736}
1737
1738ObjectProperty *
1739object_property_try_add_child(Object *obj, const char *name,
1740 Object *child, Error **errp)
1741{
1742 g_autofree char *type = NULL;
1743 ObjectProperty *op;
1744
1745 assert(!child->parent);
1746
1747 type = g_strdup_printf("child<%s>", object_get_typename(child));
1748
1749 op = object_property_try_add(obj, name, type, object_get_child_property,
1750 NULL, object_finalize_child_property,
1751 child, errp);
1752 if (!op) {
1753 return NULL;
1754 }
1755 op->resolve = object_resolve_child_property;
1756 object_ref(child);
1757 child->parent = obj;
1758 return op;
1759}
1760
1761ObjectProperty *
1762object_property_add_child(Object *obj, const char *name,
1763 Object *child)
1764{
1765 return object_property_try_add_child(obj, name, child, &error_abort);
1766}
1767
1768void object_property_allow_set_link(const Object *obj, const char *name,
1769 Object *val, Error **errp)
1770{
1771
1772}
1773
1774typedef struct {
1775 union {
1776 Object **targetp;
1777 Object *target;
1778 ptrdiff_t offset;
1779 };
1780 void (*check)(const Object *, const char *, Object *, Error **);
1781 ObjectPropertyLinkFlags flags;
1782} LinkProperty;
1783
1784static Object **
1785object_link_get_targetp(Object *obj, LinkProperty *lprop)
1786{
1787 if (lprop->flags & OBJ_PROP_LINK_DIRECT) {
1788 return &lprop->target;
1789 } else if (lprop->flags & OBJ_PROP_LINK_CLASS) {
1790 return (void *)obj + lprop->offset;
1791 } else {
1792 return lprop->targetp;
1793 }
1794}
1795
1796static void object_get_link_property(Object *obj, Visitor *v,
1797 const char *name, void *opaque,
1798 Error **errp)
1799{
1800 LinkProperty *lprop = opaque;
1801 Object **targetp = object_link_get_targetp(obj, lprop);
1802 char *path;
1803
1804 if (*targetp) {
1805 path = object_get_canonical_path(*targetp);
1806 visit_type_str(v, name, &path, errp);
1807 g_free(path);
1808 } else {
1809 path = (char *)"";
1810 visit_type_str(v, name, &path, errp);
1811 }
1812}
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823static Object *object_resolve_link(Object *obj, const char *name,
1824 const char *path, Error **errp)
1825{
1826 const char *type;
1827 char *target_type;
1828 bool ambiguous = false;
1829 Object *target;
1830
1831
1832 type = object_property_get_type(obj, name, NULL);
1833 target_type = g_strndup(&type[5], strlen(type) - 6);
1834 target = object_resolve_path_type(path, target_type, &ambiguous);
1835
1836 if (ambiguous) {
1837 error_setg(errp, "Path '%s' does not uniquely identify an object",
1838 path);
1839 } else if (!target) {
1840 target = object_resolve_path(path, &ambiguous);
1841 if (target || ambiguous) {
1842 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, target_type);
1843 } else {
1844 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
1845 "Device '%s' not found", path);
1846 }
1847 target = NULL;
1848 }
1849 g_free(target_type);
1850
1851 return target;
1852}
1853
1854static void object_set_link_property(Object *obj, Visitor *v,
1855 const char *name, void *opaque,
1856 Error **errp)
1857{
1858 Error *local_err = NULL;
1859 LinkProperty *prop = opaque;
1860 Object **targetp = object_link_get_targetp(obj, prop);
1861 Object *old_target = *targetp;
1862 Object *new_target;
1863 char *path = NULL;
1864
1865 if (!visit_type_str(v, name, &path, errp)) {
1866 return;
1867 }
1868
1869 if (*path) {
1870 new_target = object_resolve_link(obj, name, path, errp);
1871 if (!new_target) {
1872 g_free(path);
1873 return;
1874 }
1875 } else {
1876 new_target = NULL;
1877 }
1878
1879 g_free(path);
1880
1881 prop->check(obj, name, new_target, &local_err);
1882 if (local_err) {
1883 error_propagate(errp, local_err);
1884 return;
1885 }
1886
1887 *targetp = new_target;
1888 if (prop->flags & OBJ_PROP_LINK_STRONG) {
1889 object_ref(new_target);
1890 object_unref(old_target);
1891 }
1892}
1893
1894static Object *object_resolve_link_property(Object *parent, void *opaque,
1895 const char *part)
1896{
1897 LinkProperty *lprop = opaque;
1898
1899 return *object_link_get_targetp(parent, lprop);
1900}
1901
1902static void object_release_link_property(Object *obj, const char *name,
1903 void *opaque)
1904{
1905 LinkProperty *prop = opaque;
1906 Object **targetp = object_link_get_targetp(obj, prop);
1907
1908 if ((prop->flags & OBJ_PROP_LINK_STRONG) && *targetp) {
1909 object_unref(*targetp);
1910 }
1911 if (!(prop->flags & OBJ_PROP_LINK_CLASS)) {
1912 g_free(prop);
1913 }
1914}
1915
1916static ObjectProperty *
1917object_add_link_prop(Object *obj, const char *name,
1918 const char *type, void *ptr,
1919 void (*check)(const Object *, const char *,
1920 Object *, Error **),
1921 ObjectPropertyLinkFlags flags)
1922{
1923 LinkProperty *prop = g_malloc(sizeof(*prop));
1924 g_autofree char *full_type = NULL;
1925 ObjectProperty *op;
1926
1927 if (flags & OBJ_PROP_LINK_DIRECT) {
1928 prop->target = ptr;
1929 } else {
1930 prop->targetp = ptr;
1931 }
1932 prop->check = check;
1933 prop->flags = flags;
1934
1935 full_type = g_strdup_printf("link<%s>", type);
1936
1937 op = object_property_add(obj, name, full_type,
1938 object_get_link_property,
1939 check ? object_set_link_property : NULL,
1940 object_release_link_property,
1941 prop);
1942 op->resolve = object_resolve_link_property;
1943 return op;
1944}
1945
1946ObjectProperty *
1947object_property_add_link(Object *obj, const char *name,
1948 const char *type, Object **targetp,
1949 void (*check)(const Object *, const char *,
1950 Object *, Error **),
1951 ObjectPropertyLinkFlags flags)
1952{
1953 return object_add_link_prop(obj, name, type, targetp, check, flags);
1954}
1955
1956ObjectProperty *
1957object_class_property_add_link(ObjectClass *oc,
1958 const char *name,
1959 const char *type, ptrdiff_t offset,
1960 void (*check)(const Object *obj, const char *name,
1961 Object *val, Error **errp),
1962 ObjectPropertyLinkFlags flags)
1963{
1964 LinkProperty *prop = g_new0(LinkProperty, 1);
1965 char *full_type;
1966 ObjectProperty *op;
1967
1968 prop->offset = offset;
1969 prop->check = check;
1970 prop->flags = flags | OBJ_PROP_LINK_CLASS;
1971
1972 full_type = g_strdup_printf("link<%s>", type);
1973
1974 op = object_class_property_add(oc, name, full_type,
1975 object_get_link_property,
1976 check ? object_set_link_property : NULL,
1977 object_release_link_property,
1978 prop);
1979
1980 op->resolve = object_resolve_link_property;
1981
1982 g_free(full_type);
1983 return op;
1984}
1985
1986ObjectProperty *
1987object_property_add_const_link(Object *obj, const char *name,
1988 Object *target)
1989{
1990 return object_add_link_prop(obj, name,
1991 object_get_typename(target), target,
1992 NULL, OBJ_PROP_LINK_DIRECT);
1993}
1994
1995const char *object_get_canonical_path_component(const Object *obj)
1996{
1997 ObjectProperty *prop = NULL;
1998 GHashTableIter iter;
1999
2000 if (obj->parent == NULL) {
2001 return NULL;
2002 }
2003
2004 g_hash_table_iter_init(&iter, obj->parent->properties);
2005 while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) {
2006 if (!object_property_is_child(prop)) {
2007 continue;
2008 }
2009
2010 if (prop->opaque == obj) {
2011 return prop->name;
2012 }
2013 }
2014
2015
2016 g_assert_not_reached();
2017 return NULL;
2018}
2019
2020char *object_get_canonical_path(const Object *obj)
2021{
2022 Object *root = object_get_root();
2023 char *newpath, *path = NULL;
2024
2025 if (obj == root) {
2026 return g_strdup("/");
2027 }
2028
2029 do {
2030 const char *component = object_get_canonical_path_component(obj);
2031
2032 if (!component) {
2033
2034
2035
2036 g_free(path);
2037 return NULL;
2038 }
2039
2040 newpath = g_strdup_printf("/%s%s", component, path ? path : "");
2041 g_free(path);
2042 path = newpath;
2043 obj = obj->parent;
2044 } while (obj != root);
2045
2046 return path;
2047}
2048
2049Object *object_resolve_path_component(Object *parent, const char *part)
2050{
2051 ObjectProperty *prop = object_property_find(parent, part);
2052 if (prop == NULL) {
2053 return NULL;
2054 }
2055
2056 if (prop->resolve) {
2057 return prop->resolve(parent, prop->opaque, part);
2058 } else {
2059 return NULL;
2060 }
2061}
2062
2063static Object *object_resolve_abs_path(Object *parent,
2064 char **parts,
2065 const char *typename)
2066{
2067 Object *child;
2068
2069 if (*parts == NULL) {
2070 return object_dynamic_cast(parent, typename);
2071 }
2072
2073 if (strcmp(*parts, "") == 0) {
2074 return object_resolve_abs_path(parent, parts + 1, typename);
2075 }
2076
2077 child = object_resolve_path_component(parent, *parts);
2078 if (!child) {
2079 return NULL;
2080 }
2081
2082 return object_resolve_abs_path(child, parts + 1, typename);
2083}
2084
2085static Object *object_resolve_partial_path(Object *parent,
2086 char **parts,
2087 const char *typename,
2088 bool *ambiguous)
2089{
2090 Object *obj;
2091 GHashTableIter iter;
2092 ObjectProperty *prop;
2093
2094 obj = object_resolve_abs_path(parent, parts, typename);
2095
2096 g_hash_table_iter_init(&iter, parent->properties);
2097 while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) {
2098 Object *found;
2099
2100 if (!object_property_is_child(prop)) {
2101 continue;
2102 }
2103
2104 found = object_resolve_partial_path(prop->opaque, parts,
2105 typename, ambiguous);
2106 if (found) {
2107 if (obj) {
2108 *ambiguous = true;
2109 return NULL;
2110 }
2111 obj = found;
2112 }
2113
2114 if (*ambiguous) {
2115 return NULL;
2116 }
2117 }
2118
2119 return obj;
2120}
2121
2122Object *object_resolve_path_type(const char *path, const char *typename,
2123 bool *ambiguousp)
2124{
2125 Object *obj;
2126 char **parts;
2127
2128 parts = g_strsplit(path, "/", 0);
2129 assert(parts);
2130
2131 if (parts[0] == NULL || strcmp(parts[0], "") != 0) {
2132 bool ambiguous = false;
2133 obj = object_resolve_partial_path(object_get_root(), parts,
2134 typename, &ambiguous);
2135 if (ambiguousp) {
2136 *ambiguousp = ambiguous;
2137 }
2138 } else {
2139 obj = object_resolve_abs_path(object_get_root(), parts + 1, typename);
2140 }
2141
2142 g_strfreev(parts);
2143
2144 return obj;
2145}
2146
2147Object *object_resolve_path(const char *path, bool *ambiguous)
2148{
2149 return object_resolve_path_type(path, TYPE_OBJECT, ambiguous);
2150}
2151
2152Object *object_resolve_path_at(Object *parent, const char *path)
2153{
2154 g_auto(GStrv) parts = g_strsplit(path, "/", 0);
2155
2156 if (*path == '/') {
2157 return object_resolve_abs_path(object_get_root(), parts + 1,
2158 TYPE_OBJECT);
2159 }
2160 return object_resolve_abs_path(parent, parts, TYPE_OBJECT);
2161}
2162
2163typedef struct StringProperty
2164{
2165 char *(*get)(Object *, Error **);
2166 void (*set)(Object *, const char *, Error **);
2167} StringProperty;
2168
2169static void property_get_str(Object *obj, Visitor *v, const char *name,
2170 void *opaque, Error **errp)
2171{
2172 StringProperty *prop = opaque;
2173 char *value;
2174 Error *err = NULL;
2175
2176 value = prop->get(obj, &err);
2177 if (err) {
2178 error_propagate(errp, err);
2179 return;
2180 }
2181
2182 visit_type_str(v, name, &value, errp);
2183 g_free(value);
2184}
2185
2186static void property_set_str(Object *obj, Visitor *v, const char *name,
2187 void *opaque, Error **errp)
2188{
2189 StringProperty *prop = opaque;
2190 char *value;
2191
2192 if (!visit_type_str(v, name, &value, errp)) {
2193 return;
2194 }
2195
2196 prop->set(obj, value, errp);
2197 g_free(value);
2198}
2199
2200static void property_release_data(Object *obj, const char *name,
2201 void *opaque)
2202{
2203 g_free(opaque);
2204}
2205
2206ObjectProperty *
2207object_property_add_str(Object *obj, const char *name,
2208 char *(*get)(Object *, Error **),
2209 void (*set)(Object *, const char *, Error **))
2210{
2211 StringProperty *prop = g_malloc0(sizeof(*prop));
2212
2213 prop->get = get;
2214 prop->set = set;
2215
2216 return object_property_add(obj, name, "string",
2217 get ? property_get_str : NULL,
2218 set ? property_set_str : NULL,
2219 property_release_data,
2220 prop);
2221}
2222
2223ObjectProperty *
2224object_class_property_add_str(ObjectClass *klass, const char *name,
2225 char *(*get)(Object *, Error **),
2226 void (*set)(Object *, const char *,
2227 Error **))
2228{
2229 StringProperty *prop = g_malloc0(sizeof(*prop));
2230
2231 prop->get = get;
2232 prop->set = set;
2233
2234 return object_class_property_add(klass, name, "string",
2235 get ? property_get_str : NULL,
2236 set ? property_set_str : NULL,
2237 NULL,
2238 prop);
2239}
2240
2241typedef struct BoolProperty
2242{
2243 bool (*get)(Object *, Error **);
2244 void (*set)(Object *, bool, Error **);
2245} BoolProperty;
2246
2247static void property_get_bool(Object *obj, Visitor *v, const char *name,
2248 void *opaque, Error **errp)
2249{
2250 BoolProperty *prop = opaque;
2251 bool value;
2252 Error *err = NULL;
2253
2254 value = prop->get(obj, &err);
2255 if (err) {
2256 error_propagate(errp, err);
2257 return;
2258 }
2259
2260 visit_type_bool(v, name, &value, errp);
2261}
2262
2263static void property_set_bool(Object *obj, Visitor *v, const char *name,
2264 void *opaque, Error **errp)
2265{
2266 BoolProperty *prop = opaque;
2267 bool value;
2268
2269 if (!visit_type_bool(v, name, &value, errp)) {
2270 return;
2271 }
2272
2273 prop->set(obj, value, errp);
2274}
2275
2276ObjectProperty *
2277object_property_add_bool(Object *obj, const char *name,
2278 bool (*get)(Object *, Error **),
2279 void (*set)(Object *, bool, Error **))
2280{
2281 BoolProperty *prop = g_malloc0(sizeof(*prop));
2282
2283 prop->get = get;
2284 prop->set = set;
2285
2286 return object_property_add(obj, name, "bool",
2287 get ? property_get_bool : NULL,
2288 set ? property_set_bool : NULL,
2289 property_release_data,
2290 prop);
2291}
2292
2293ObjectProperty *
2294object_class_property_add_bool(ObjectClass *klass, const char *name,
2295 bool (*get)(Object *, Error **),
2296 void (*set)(Object *, bool, Error **))
2297{
2298 BoolProperty *prop = g_malloc0(sizeof(*prop));
2299
2300 prop->get = get;
2301 prop->set = set;
2302
2303 return object_class_property_add(klass, name, "bool",
2304 get ? property_get_bool : NULL,
2305 set ? property_set_bool : NULL,
2306 NULL,
2307 prop);
2308}
2309
2310static void property_get_enum(Object *obj, Visitor *v, const char *name,
2311 void *opaque, Error **errp)
2312{
2313 EnumProperty *prop = opaque;
2314 int value;
2315 Error *err = NULL;
2316
2317 value = prop->get(obj, &err);
2318 if (err) {
2319 error_propagate(errp, err);
2320 return;
2321 }
2322
2323 visit_type_enum(v, name, &value, prop->lookup, errp);
2324}
2325
2326static void property_set_enum(Object *obj, Visitor *v, const char *name,
2327 void *opaque, Error **errp)
2328{
2329 EnumProperty *prop = opaque;
2330 int value;
2331
2332 if (!visit_type_enum(v, name, &value, prop->lookup, errp)) {
2333 return;
2334 }
2335 prop->set(obj, value, errp);
2336}
2337
2338ObjectProperty *
2339object_property_add_enum(Object *obj, const char *name,
2340 const char *typename,
2341 const QEnumLookup *lookup,
2342 int (*get)(Object *, Error **),
2343 void (*set)(Object *, int, Error **))
2344{
2345 EnumProperty *prop = g_malloc(sizeof(*prop));
2346
2347 prop->lookup = lookup;
2348 prop->get = get;
2349 prop->set = set;
2350
2351 return object_property_add(obj, name, typename,
2352 get ? property_get_enum : NULL,
2353 set ? property_set_enum : NULL,
2354 property_release_data,
2355 prop);
2356}
2357
2358ObjectProperty *
2359object_class_property_add_enum(ObjectClass *klass, const char *name,
2360 const char *typename,
2361 const QEnumLookup *lookup,
2362 int (*get)(Object *, Error **),
2363 void (*set)(Object *, int, Error **))
2364{
2365 EnumProperty *prop = g_malloc(sizeof(*prop));
2366
2367 prop->lookup = lookup;
2368 prop->get = get;
2369 prop->set = set;
2370
2371 return object_class_property_add(klass, name, typename,
2372 get ? property_get_enum : NULL,
2373 set ? property_set_enum : NULL,
2374 NULL,
2375 prop);
2376}
2377
2378typedef struct TMProperty {
2379 void (*get)(Object *, struct tm *, Error **);
2380} TMProperty;
2381
2382static void property_get_tm(Object *obj, Visitor *v, const char *name,
2383 void *opaque, Error **errp)
2384{
2385 TMProperty *prop = opaque;
2386 Error *err = NULL;
2387 struct tm value;
2388
2389 prop->get(obj, &value, &err);
2390 if (err) {
2391 error_propagate(errp, err);
2392 return;
2393 }
2394
2395 if (!visit_start_struct(v, name, NULL, 0, errp)) {
2396 return;
2397 }
2398 if (!visit_type_int32(v, "tm_year", &value.tm_year, errp)) {
2399 goto out_end;
2400 }
2401 if (!visit_type_int32(v, "tm_mon", &value.tm_mon, errp)) {
2402 goto out_end;
2403 }
2404 if (!visit_type_int32(v, "tm_mday", &value.tm_mday, errp)) {
2405 goto out_end;
2406 }
2407 if (!visit_type_int32(v, "tm_hour", &value.tm_hour, errp)) {
2408 goto out_end;
2409 }
2410 if (!visit_type_int32(v, "tm_min", &value.tm_min, errp)) {
2411 goto out_end;
2412 }
2413 if (!visit_type_int32(v, "tm_sec", &value.tm_sec, errp)) {
2414 goto out_end;
2415 }
2416 visit_check_struct(v, errp);
2417out_end:
2418 visit_end_struct(v, NULL);
2419}
2420
2421ObjectProperty *
2422object_property_add_tm(Object *obj, const char *name,
2423 void (*get)(Object *, struct tm *, Error **))
2424{
2425 TMProperty *prop = g_malloc0(sizeof(*prop));
2426
2427 prop->get = get;
2428
2429 return object_property_add(obj, name, "struct tm",
2430 get ? property_get_tm : NULL, NULL,
2431 property_release_data,
2432 prop);
2433}
2434
2435ObjectProperty *
2436object_class_property_add_tm(ObjectClass *klass, const char *name,
2437 void (*get)(Object *, struct tm *, Error **))
2438{
2439 TMProperty *prop = g_malloc0(sizeof(*prop));
2440
2441 prop->get = get;
2442
2443 return object_class_property_add(klass, name, "struct tm",
2444 get ? property_get_tm : NULL,
2445 NULL, NULL, prop);
2446}
2447
2448static char *object_get_type(Object *obj, Error **errp)
2449{
2450 return g_strdup(object_get_typename(obj));
2451}
2452
2453static void property_get_uint8_ptr(Object *obj, Visitor *v, const char *name,
2454 void *opaque, Error **errp)
2455{
2456 uint8_t value = *(uint8_t *)opaque;
2457 visit_type_uint8(v, name, &value, errp);
2458}
2459
2460static void property_set_uint8_ptr(Object *obj, Visitor *v, const char *name,
2461 void *opaque, Error **errp)
2462{
2463 uint8_t *field = opaque;
2464 uint8_t value;
2465
2466 if (!visit_type_uint8(v, name, &value, errp)) {
2467 return;
2468 }
2469
2470 *field = value;
2471}
2472
2473static void property_get_uint16_ptr(Object *obj, Visitor *v, const char *name,
2474 void *opaque, Error **errp)
2475{
2476 uint16_t value = *(uint16_t *)opaque;
2477 visit_type_uint16(v, name, &value, errp);
2478}
2479
2480static void property_set_uint16_ptr(Object *obj, Visitor *v, const char *name,
2481 void *opaque, Error **errp)
2482{
2483 uint16_t *field = opaque;
2484 uint16_t value;
2485
2486 if (!visit_type_uint16(v, name, &value, errp)) {
2487 return;
2488 }
2489
2490 *field = value;
2491}
2492
2493static void property_get_uint32_ptr(Object *obj, Visitor *v, const char *name,
2494 void *opaque, Error **errp)
2495{
2496 uint32_t value = *(uint32_t *)opaque;
2497 visit_type_uint32(v, name, &value, errp);
2498}
2499
2500static void property_set_uint32_ptr(Object *obj, Visitor *v, const char *name,
2501 void *opaque, Error **errp)
2502{
2503 uint32_t *field = opaque;
2504 uint32_t value;
2505
2506 if (!visit_type_uint32(v, name, &value, errp)) {
2507 return;
2508 }
2509
2510 *field = value;
2511}
2512
2513static void property_get_uint64_ptr(Object *obj, Visitor *v, const char *name,
2514 void *opaque, Error **errp)
2515{
2516 uint64_t value = *(uint64_t *)opaque;
2517 visit_type_uint64(v, name, &value, errp);
2518}
2519
2520static void property_set_uint64_ptr(Object *obj, Visitor *v, const char *name,
2521 void *opaque, Error **errp)
2522{
2523 uint64_t *field = opaque;
2524 uint64_t value;
2525
2526 if (!visit_type_uint64(v, name, &value, errp)) {
2527 return;
2528 }
2529
2530 *field = value;
2531}
2532
2533ObjectProperty *
2534object_property_add_uint8_ptr(Object *obj, const char *name,
2535 const uint8_t *v,
2536 ObjectPropertyFlags flags)
2537{
2538 ObjectPropertyAccessor *getter = NULL;
2539 ObjectPropertyAccessor *setter = NULL;
2540
2541 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2542 getter = property_get_uint8_ptr;
2543 }
2544
2545 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2546 setter = property_set_uint8_ptr;
2547 }
2548
2549 return object_property_add(obj, name, "uint8",
2550 getter, setter, NULL, (void *)v);
2551}
2552
2553ObjectProperty *
2554object_class_property_add_uint8_ptr(ObjectClass *klass, const char *name,
2555 const uint8_t *v,
2556 ObjectPropertyFlags flags)
2557{
2558 ObjectPropertyAccessor *getter = NULL;
2559 ObjectPropertyAccessor *setter = NULL;
2560
2561 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2562 getter = property_get_uint8_ptr;
2563 }
2564
2565 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2566 setter = property_set_uint8_ptr;
2567 }
2568
2569 return object_class_property_add(klass, name, "uint8",
2570 getter, setter, NULL, (void *)v);
2571}
2572
2573ObjectProperty *
2574object_property_add_uint16_ptr(Object *obj, const char *name,
2575 const uint16_t *v,
2576 ObjectPropertyFlags flags)
2577{
2578 ObjectPropertyAccessor *getter = NULL;
2579 ObjectPropertyAccessor *setter = NULL;
2580
2581 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2582 getter = property_get_uint16_ptr;
2583 }
2584
2585 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2586 setter = property_set_uint16_ptr;
2587 }
2588
2589 return object_property_add(obj, name, "uint16",
2590 getter, setter, NULL, (void *)v);
2591}
2592
2593ObjectProperty *
2594object_class_property_add_uint16_ptr(ObjectClass *klass, const char *name,
2595 const uint16_t *v,
2596 ObjectPropertyFlags flags)
2597{
2598 ObjectPropertyAccessor *getter = NULL;
2599 ObjectPropertyAccessor *setter = NULL;
2600
2601 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2602 getter = property_get_uint16_ptr;
2603 }
2604
2605 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2606 setter = property_set_uint16_ptr;
2607 }
2608
2609 return object_class_property_add(klass, name, "uint16",
2610 getter, setter, NULL, (void *)v);
2611}
2612
2613ObjectProperty *
2614object_property_add_uint32_ptr(Object *obj, const char *name,
2615 const uint32_t *v,
2616 ObjectPropertyFlags flags)
2617{
2618 ObjectPropertyAccessor *getter = NULL;
2619 ObjectPropertyAccessor *setter = NULL;
2620
2621 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2622 getter = property_get_uint32_ptr;
2623 }
2624
2625 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2626 setter = property_set_uint32_ptr;
2627 }
2628
2629 return object_property_add(obj, name, "uint32",
2630 getter, setter, NULL, (void *)v);
2631}
2632
2633ObjectProperty *
2634object_class_property_add_uint32_ptr(ObjectClass *klass, const char *name,
2635 const uint32_t *v,
2636 ObjectPropertyFlags flags)
2637{
2638 ObjectPropertyAccessor *getter = NULL;
2639 ObjectPropertyAccessor *setter = NULL;
2640
2641 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2642 getter = property_get_uint32_ptr;
2643 }
2644
2645 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2646 setter = property_set_uint32_ptr;
2647 }
2648
2649 return object_class_property_add(klass, name, "uint32",
2650 getter, setter, NULL, (void *)v);
2651}
2652
2653ObjectProperty *
2654object_property_add_uint64_ptr(Object *obj, const char *name,
2655 const uint64_t *v,
2656 ObjectPropertyFlags flags)
2657{
2658 ObjectPropertyAccessor *getter = NULL;
2659 ObjectPropertyAccessor *setter = NULL;
2660
2661 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2662 getter = property_get_uint64_ptr;
2663 }
2664
2665 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2666 setter = property_set_uint64_ptr;
2667 }
2668
2669 return object_property_add(obj, name, "uint64",
2670 getter, setter, NULL, (void *)v);
2671}
2672
2673ObjectProperty *
2674object_class_property_add_uint64_ptr(ObjectClass *klass, const char *name,
2675 const uint64_t *v,
2676 ObjectPropertyFlags flags)
2677{
2678 ObjectPropertyAccessor *getter = NULL;
2679 ObjectPropertyAccessor *setter = NULL;
2680
2681 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2682 getter = property_get_uint64_ptr;
2683 }
2684
2685 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2686 setter = property_set_uint64_ptr;
2687 }
2688
2689 return object_class_property_add(klass, name, "uint64",
2690 getter, setter, NULL, (void *)v);
2691}
2692
2693typedef struct {
2694 Object *target_obj;
2695 char *target_name;
2696} AliasProperty;
2697
2698static void property_get_alias(Object *obj, Visitor *v, const char *name,
2699 void *opaque, Error **errp)
2700{
2701 AliasProperty *prop = opaque;
2702 Visitor *alias_v = visitor_forward_field(v, prop->target_name, name);
2703
2704 object_property_get(prop->target_obj, prop->target_name, alias_v, errp);
2705 visit_free(alias_v);
2706}
2707
2708static void property_set_alias(Object *obj, Visitor *v, const char *name,
2709 void *opaque, Error **errp)
2710{
2711 AliasProperty *prop = opaque;
2712 Visitor *alias_v = visitor_forward_field(v, prop->target_name, name);
2713
2714 object_property_set(prop->target_obj, prop->target_name, alias_v, errp);
2715 visit_free(alias_v);
2716}
2717
2718static Object *property_resolve_alias(Object *obj, void *opaque,
2719 const char *part)
2720{
2721 AliasProperty *prop = opaque;
2722
2723 return object_resolve_path_component(prop->target_obj, prop->target_name);
2724}
2725
2726static void property_release_alias(Object *obj, const char *name, void *opaque)
2727{
2728 AliasProperty *prop = opaque;
2729
2730 g_free(prop->target_name);
2731 g_free(prop);
2732}
2733
2734ObjectProperty *
2735object_property_add_alias(Object *obj, const char *name,
2736 Object *target_obj, const char *target_name)
2737{
2738 AliasProperty *prop;
2739 ObjectProperty *op;
2740 ObjectProperty *target_prop;
2741 g_autofree char *prop_type = NULL;
2742
2743 target_prop = object_property_find_err(target_obj, target_name,
2744 &error_abort);
2745
2746 if (object_property_is_child(target_prop)) {
2747 prop_type = g_strdup_printf("link%s",
2748 target_prop->type + strlen("child"));
2749 } else {
2750 prop_type = g_strdup(target_prop->type);
2751 }
2752
2753 prop = g_malloc(sizeof(*prop));
2754 prop->target_obj = target_obj;
2755 prop->target_name = g_strdup(target_name);
2756
2757 op = object_property_add(obj, name, prop_type,
2758 property_get_alias,
2759 property_set_alias,
2760 property_release_alias,
2761 prop);
2762 op->resolve = property_resolve_alias;
2763 if (target_prop->defval) {
2764 op->defval = qobject_ref(target_prop->defval);
2765 }
2766
2767 object_property_set_description(obj, op->name,
2768 target_prop->description);
2769 return op;
2770}
2771
2772void object_property_set_description(Object *obj, const char *name,
2773 const char *description)
2774{
2775 ObjectProperty *op;
2776
2777 op = object_property_find_err(obj, name, &error_abort);
2778 g_free(op->description);
2779 op->description = g_strdup(description);
2780}
2781
2782void object_class_property_set_description(ObjectClass *klass,
2783 const char *name,
2784 const char *description)
2785{
2786 ObjectProperty *op;
2787
2788 op = g_hash_table_lookup(klass->properties, name);
2789 g_free(op->description);
2790 op->description = g_strdup(description);
2791}
2792
2793static void object_class_init(ObjectClass *klass, void *data)
2794{
2795 object_class_property_add_str(klass, "type", object_get_type,
2796 NULL);
2797}
2798
2799static void register_types(void)
2800{
2801 static const TypeInfo interface_info = {
2802 .name = TYPE_INTERFACE,
2803 .class_size = sizeof(InterfaceClass),
2804 .abstract = true,
2805 };
2806
2807 static const TypeInfo object_info = {
2808 .name = TYPE_OBJECT,
2809 .instance_size = sizeof(Object),
2810 .class_init = object_class_init,
2811 .abstract = true,
2812 };
2813
2814 type_interface = type_register_internal(&interface_info);
2815 type_register_internal(&object_info);
2816}
2817
2818type_init(register_types)
2819