target/arm: Implement VFP fp16 for VABS, VNEG, VSQRT
[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
54 void (*class_init)(ObjectClass *klass, void *data);
55 void (*class_base_init)(ObjectClass *klass, void *data);
56
57 void *class_data;
58
59 void (*instance_init)(Object *obj);
60 void (*instance_post_init)(Object *obj);
61 void (*instance_finalize)(Object *obj);
62
63 bool abstract;
64
65 const char *parent;
66 TypeImpl *parent_type;
67
68 ObjectClass *class;
69
70 int num_interfaces;
71 InterfaceImpl interfaces[MAX_INTERFACES];
72 };
73
74 static Type type_interface;
75
76 static GHashTable *type_table_get(void)
77 {
78 static GHashTable *type_table;
79
80 if (type_table == NULL) {
81 type_table = g_hash_table_new(g_str_hash, g_str_equal);
82 }
83
84 return type_table;
85 }
86
87 static bool enumerating_types;
88
89 static void type_table_add(TypeImpl *ti)
90 {
91 assert(!enumerating_types);
92 g_hash_table_insert(type_table_get(), (void *)ti->name, ti);
93 }
94
95 static TypeImpl *type_table_lookup(const char *name)
96 {
97 return g_hash_table_lookup(type_table_get(), name);
98 }
99
100 static TypeImpl *type_new(const TypeInfo *info)
101 {
102 TypeImpl *ti = g_malloc0(sizeof(*ti));
103 int i;
104
105 g_assert(info->name != NULL);
106
107 if (type_table_lookup(info->name) != NULL) {
108 fprintf(stderr, "Registering `%s' which already exists\n", info->name);
109 abort();
110 }
111
112 ti->name = g_strdup(info->name);
113 ti->parent = g_strdup(info->parent);
114
115 ti->class_size = info->class_size;
116 ti->instance_size = info->instance_size;
117
118 ti->class_init = info->class_init;
119 ti->class_base_init = info->class_base_init;
120 ti->class_data = info->class_data;
121
122 ti->instance_init = info->instance_init;
123 ti->instance_post_init = info->instance_post_init;
124 ti->instance_finalize = info->instance_finalize;
125
126 ti->abstract = info->abstract;
127
128 for (i = 0; info->interfaces && info->interfaces[i].type; i++) {
129 ti->interfaces[i].typename = g_strdup(info->interfaces[i].type);
130 }
131 ti->num_interfaces = i;
132
133 return ti;
134 }
135
136 static TypeImpl *type_register_internal(const TypeInfo *info)
137 {
138 TypeImpl *ti;
139 ti = type_new(info);
140
141 type_table_add(ti);
142 return ti;
143 }
144
145 TypeImpl *type_register(const TypeInfo *info)
146 {
147 assert(info->parent);
148 return type_register_internal(info);
149 }
150
151 TypeImpl *type_register_static(const TypeInfo *info)
152 {
153 return type_register(info);
154 }
155
156 void type_register_static_array(const TypeInfo *infos, int nr_infos)
157 {
158 int i;
159
160 for (i = 0; i < nr_infos; i++) {
161 type_register_static(&infos[i]);
162 }
163 }
164
165 static TypeImpl *type_get_by_name(const char *name)
166 {
167 if (name == NULL) {
168 return NULL;
169 }
170
171 return type_table_lookup(name);
172 }
173
174 static TypeImpl *type_get_parent(TypeImpl *type)
175 {
176 if (!type->parent_type && type->parent) {
177 type->parent_type = type_get_by_name(type->parent);
178 if (!type->parent_type) {
179 fprintf(stderr, "Type '%s' is missing its parent '%s'\n",
180 type->name, type->parent);
181 abort();
182 }
183 }
184
185 return type->parent_type;
186 }
187
188 static bool type_has_parent(TypeImpl *type)
189 {
190 return (type->parent != NULL);
191 }
192
193 static size_t type_class_get_size(TypeImpl *ti)
194 {
195 if (ti->class_size) {
196 return ti->class_size;
197 }
198
199 if (type_has_parent(ti)) {
200 return type_class_get_size(type_get_parent(ti));
201 }
202
203 return sizeof(ObjectClass);
204 }
205
206 static size_t type_object_get_size(TypeImpl *ti)
207 {
208 if (ti->instance_size) {
209 return ti->instance_size;
210 }
211
212 if (type_has_parent(ti)) {
213 return type_object_get_size(type_get_parent(ti));
214 }
215
216 return 0;
217 }
218
219 size_t object_type_get_instance_size(const char *typename)
220 {
221 TypeImpl *type = type_get_by_name(typename);
222
223 g_assert(type != NULL);
224 return type_object_get_size(type);
225 }
226
227 static bool type_is_ancestor(TypeImpl *type, TypeImpl *target_type)
228 {
229 assert(target_type);
230
231 /* Check if target_type is a direct ancestor of type */
232 while (type) {
233 if (type == target_type) {
234 return true;
235 }
236
237 type = type_get_parent(type);
238 }
239
240 return false;
241 }
242
243 static void type_initialize(TypeImpl *ti);
244
245 static void type_initialize_interface(TypeImpl *ti, TypeImpl *interface_type,
246 TypeImpl *parent_type)
247 {
248 InterfaceClass *new_iface;
249 TypeInfo info = { };
250 TypeImpl *iface_impl;
251
252 info.parent = parent_type->name;
253 info.name = g_strdup_printf("%s::%s", ti->name, interface_type->name);
254 info.abstract = true;
255
256 iface_impl = type_new(&info);
257 iface_impl->parent_type = parent_type;
258 type_initialize(iface_impl);
259 g_free((char *)info.name);
260
261 new_iface = (InterfaceClass *)iface_impl->class;
262 new_iface->concrete_class = ti->class;
263 new_iface->interface_type = interface_type;
264
265 ti->class->interfaces = g_slist_append(ti->class->interfaces, new_iface);
266 }
267
268 static void object_property_free(gpointer data)
269 {
270 ObjectProperty *prop = data;
271
272 if (prop->defval) {
273 qobject_unref(prop->defval);
274 prop->defval = NULL;
275 }
276 g_free(prop->name);
277 g_free(prop->type);
278 g_free(prop->description);
279 g_free(prop);
280 }
281
282 static void type_initialize(TypeImpl *ti)
283 {
284 TypeImpl *parent;
285
286 if (ti->class) {
287 return;
288 }
289
290 ti->class_size = type_class_get_size(ti);
291 ti->instance_size = type_object_get_size(ti);
292 /* Any type with zero instance_size is implicitly abstract.
293 * This means interface types are all abstract.
294 */
295 if (ti->instance_size == 0) {
296 ti->abstract = true;
297 }
298 if (type_is_ancestor(ti, type_interface)) {
299 assert(ti->instance_size == 0);
300 assert(ti->abstract);
301 assert(!ti->instance_init);
302 assert(!ti->instance_post_init);
303 assert(!ti->instance_finalize);
304 assert(!ti->num_interfaces);
305 }
306 ti->class = g_malloc0(ti->class_size);
307
308 parent = type_get_parent(ti);
309 if (parent) {
310 type_initialize(parent);
311 GSList *e;
312 int i;
313
314 g_assert(parent->class_size <= ti->class_size);
315 g_assert(parent->instance_size <= ti->instance_size);
316 memcpy(ti->class, parent->class, parent->class_size);
317 ti->class->interfaces = NULL;
318
319 for (e = parent->class->interfaces; e; e = e->next) {
320 InterfaceClass *iface = e->data;
321 ObjectClass *klass = OBJECT_CLASS(iface);
322
323 type_initialize_interface(ti, iface->interface_type, klass->type);
324 }
325
326 for (i = 0; i < ti->num_interfaces; i++) {
327 TypeImpl *t = type_get_by_name(ti->interfaces[i].typename);
328 if (!t) {
329 error_report("missing interface '%s' for object '%s'",
330 ti->interfaces[i].typename, parent->name);
331 abort();
332 }
333 for (e = ti->class->interfaces; e; e = e->next) {
334 TypeImpl *target_type = OBJECT_CLASS(e->data)->type;
335
336 if (type_is_ancestor(target_type, t)) {
337 break;
338 }
339 }
340
341 if (e) {
342 continue;
343 }
344
345 type_initialize_interface(ti, t, t);
346 }
347 }
348
349 ti->class->properties = g_hash_table_new_full(g_str_hash, g_str_equal, NULL,
350 object_property_free);
351
352 ti->class->type = ti;
353
354 while (parent) {
355 if (parent->class_base_init) {
356 parent->class_base_init(ti->class, ti->class_data);
357 }
358 parent = type_get_parent(parent);
359 }
360
361 if (ti->class_init) {
362 ti->class_init(ti->class, ti->class_data);
363 }
364 }
365
366 static void object_init_with_type(Object *obj, TypeImpl *ti)
367 {
368 if (type_has_parent(ti)) {
369 object_init_with_type(obj, type_get_parent(ti));
370 }
371
372 if (ti->instance_init) {
373 ti->instance_init(obj);
374 }
375 }
376
377 static void object_post_init_with_type(Object *obj, TypeImpl *ti)
378 {
379 if (ti->instance_post_init) {
380 ti->instance_post_init(obj);
381 }
382
383 if (type_has_parent(ti)) {
384 object_post_init_with_type(obj, type_get_parent(ti));
385 }
386 }
387
388 bool object_apply_global_props(Object *obj, const GPtrArray *props,
389 Error **errp)
390 {
391 int i;
392
393 if (!props) {
394 return true;
395 }
396
397 for (i = 0; i < props->len; i++) {
398 GlobalProperty *p = g_ptr_array_index(props, i);
399 Error *err = NULL;
400
401 if (object_dynamic_cast(obj, p->driver) == NULL) {
402 continue;
403 }
404 if (p->optional && !object_property_find(obj, p->property, NULL)) {
405 continue;
406 }
407 p->used = true;
408 if (!object_property_parse(obj, p->property, p->value, &err)) {
409 error_prepend(&err, "can't apply global %s.%s=%s: ",
410 p->driver, p->property, p->value);
411 /*
412 * If errp != NULL, propagate error and return.
413 * If errp == NULL, report a warning, but keep going
414 * with the remaining globals.
415 */
416 if (errp) {
417 error_propagate(errp, err);
418 return false;
419 } else {
420 warn_report_err(err);
421 }
422 }
423 }
424
425 return true;
426 }
427
428 /*
429 * Global property defaults
430 * Slot 0: accelerator's global property defaults
431 * Slot 1: machine's global property defaults
432 * Slot 2: global properties from legacy command line option
433 * Each is a GPtrArray of of GlobalProperty.
434 * Applied in order, later entries override earlier ones.
435 */
436 static GPtrArray *object_compat_props[3];
437
438 /*
439 * Retrieve @GPtrArray for global property defined with options
440 * other than "-global". These are generally used for syntactic
441 * sugar and legacy command line options.
442 */
443 void object_register_sugar_prop(const char *driver, const char *prop, const char *value)
444 {
445 GlobalProperty *g;
446 if (!object_compat_props[2]) {
447 object_compat_props[2] = g_ptr_array_new();
448 }
449 g = g_new0(GlobalProperty, 1);
450 g->driver = g_strdup(driver);
451 g->property = g_strdup(prop);
452 g->value = g_strdup(value);
453 g_ptr_array_add(object_compat_props[2], g);
454 }
455
456 /*
457 * Set machine's global property defaults to @compat_props.
458 * May be called at most once.
459 */
460 void object_set_machine_compat_props(GPtrArray *compat_props)
461 {
462 assert(!object_compat_props[1]);
463 object_compat_props[1] = compat_props;
464 }
465
466 /*
467 * Set accelerator's global property defaults to @compat_props.
468 * May be called at most once.
469 */
470 void object_set_accelerator_compat_props(GPtrArray *compat_props)
471 {
472 assert(!object_compat_props[0]);
473 object_compat_props[0] = compat_props;
474 }
475
476 void object_apply_compat_props(Object *obj)
477 {
478 int i;
479
480 for (i = 0; i < ARRAY_SIZE(object_compat_props); i++) {
481 object_apply_global_props(obj, object_compat_props[i],
482 i == 2 ? &error_fatal : &error_abort);
483 }
484 }
485
486 static void object_class_property_init_all(Object *obj)
487 {
488 ObjectPropertyIterator iter;
489 ObjectProperty *prop;
490
491 object_class_property_iter_init(&iter, object_get_class(obj));
492 while ((prop = object_property_iter_next(&iter))) {
493 if (prop->init) {
494 prop->init(obj, prop);
495 }
496 }
497 }
498
499 static void object_initialize_with_type(Object *obj, size_t size, TypeImpl *type)
500 {
501 type_initialize(type);
502
503 g_assert(type->instance_size >= sizeof(Object));
504 g_assert(type->abstract == false);
505 g_assert(size >= type->instance_size);
506
507 memset(obj, 0, type->instance_size);
508 obj->class = type->class;
509 object_ref(obj);
510 object_class_property_init_all(obj);
511 obj->properties = g_hash_table_new_full(g_str_hash, g_str_equal,
512 NULL, object_property_free);
513 object_init_with_type(obj, type);
514 object_post_init_with_type(obj, type);
515 }
516
517 void object_initialize(void *data, size_t size, const char *typename)
518 {
519 TypeImpl *type = type_get_by_name(typename);
520
521 if (!type) {
522 error_report("missing object type '%s'", typename);
523 abort();
524 }
525
526 object_initialize_with_type(data, size, type);
527 }
528
529 bool object_initialize_child_with_props(Object *parentobj,
530 const char *propname,
531 void *childobj, size_t size,
532 const char *type,
533 Error **errp, ...)
534 {
535 va_list vargs;
536 bool ok;
537
538 va_start(vargs, errp);
539 ok = object_initialize_child_with_propsv(parentobj, propname,
540 childobj, size, type, errp,
541 vargs);
542 va_end(vargs);
543 return ok;
544 }
545
546 bool object_initialize_child_with_propsv(Object *parentobj,
547 const char *propname,
548 void *childobj, size_t size,
549 const char *type,
550 Error **errp, va_list vargs)
551 {
552 bool ok = false;
553 Object *obj;
554 UserCreatable *uc;
555
556 object_initialize(childobj, size, type);
557 obj = OBJECT(childobj);
558
559 if (!object_set_propv(obj, errp, vargs)) {
560 goto out;
561 }
562
563 object_property_add_child(parentobj, propname, obj);
564
565 uc = (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE);
566 if (uc) {
567 if (!user_creatable_complete(uc, errp)) {
568 object_unparent(obj);
569 goto out;
570 }
571 }
572
573 ok = true;
574
575 out:
576 /*
577 * We want @obj's reference to be 1 on success, 0 on failure.
578 * On success, it's 2: one taken by object_initialize(), and one
579 * by object_property_add_child().
580 * On failure in object_initialize() or earlier, it's 1.
581 * On failure afterwards, it's also 1: object_unparent() releases
582 * the reference taken by object_property_add_child().
583 */
584 object_unref(obj);
585 return ok;
586 }
587
588 void object_initialize_child_internal(Object *parent,
589 const char *propname,
590 void *child, size_t size,
591 const char *type)
592 {
593 object_initialize_child_with_props(parent, propname, child, size, type,
594 &error_abort, NULL);
595 }
596
597 static inline bool object_property_is_child(ObjectProperty *prop)
598 {
599 return strstart(prop->type, "child<", NULL);
600 }
601
602 static void object_property_del_all(Object *obj)
603 {
604 g_autoptr(GHashTable) done = g_hash_table_new(NULL, NULL);
605 ObjectProperty *prop;
606 ObjectPropertyIterator iter;
607 bool released;
608
609 do {
610 released = false;
611 object_property_iter_init(&iter, obj);
612 while ((prop = object_property_iter_next(&iter)) != NULL) {
613 if (g_hash_table_add(done, prop)) {
614 if (prop->release) {
615 prop->release(obj, prop->name, prop->opaque);
616 released = true;
617 break;
618 }
619 }
620 }
621 } while (released);
622
623 g_hash_table_unref(obj->properties);
624 }
625
626 static void object_property_del_child(Object *obj, Object *child)
627 {
628 ObjectProperty *prop;
629 GHashTableIter iter;
630 gpointer key, value;
631
632 g_hash_table_iter_init(&iter, obj->properties);
633 while (g_hash_table_iter_next(&iter, &key, &value)) {
634 prop = value;
635 if (object_property_is_child(prop) && prop->opaque == child) {
636 if (prop->release) {
637 prop->release(obj, prop->name, prop->opaque);
638 prop->release = NULL;
639 }
640 break;
641 }
642 }
643 g_hash_table_iter_init(&iter, obj->properties);
644 while (g_hash_table_iter_next(&iter, &key, &value)) {
645 prop = value;
646 if (object_property_is_child(prop) && prop->opaque == child) {
647 g_hash_table_iter_remove(&iter);
648 break;
649 }
650 }
651 }
652
653 void object_unparent(Object *obj)
654 {
655 if (obj->parent) {
656 object_property_del_child(obj->parent, obj);
657 }
658 }
659
660 static void object_deinit(Object *obj, TypeImpl *type)
661 {
662 if (type->instance_finalize) {
663 type->instance_finalize(obj);
664 }
665
666 if (type_has_parent(type)) {
667 object_deinit(obj, type_get_parent(type));
668 }
669 }
670
671 static void object_finalize(void *data)
672 {
673 Object *obj = data;
674 TypeImpl *ti = obj->class->type;
675
676 object_property_del_all(obj);
677 object_deinit(obj, ti);
678
679 g_assert(obj->ref == 0);
680 if (obj->free) {
681 obj->free(obj);
682 }
683 }
684
685 static Object *object_new_with_type(Type type)
686 {
687 Object *obj;
688
689 g_assert(type != NULL);
690 type_initialize(type);
691
692 obj = g_malloc(type->instance_size);
693 object_initialize_with_type(obj, type->instance_size, type);
694 obj->free = g_free;
695
696 return obj;
697 }
698
699 Object *object_new_with_class(ObjectClass *klass)
700 {
701 return object_new_with_type(klass->type);
702 }
703
704 Object *object_new(const char *typename)
705 {
706 TypeImpl *ti = type_get_by_name(typename);
707
708 return object_new_with_type(ti);
709 }
710
711
712 Object *object_new_with_props(const char *typename,
713 Object *parent,
714 const char *id,
715 Error **errp,
716 ...)
717 {
718 va_list vargs;
719 Object *obj;
720
721 va_start(vargs, errp);
722 obj = object_new_with_propv(typename, parent, id, errp, vargs);
723 va_end(vargs);
724
725 return obj;
726 }
727
728
729 Object *object_new_with_propv(const char *typename,
730 Object *parent,
731 const char *id,
732 Error **errp,
733 va_list vargs)
734 {
735 Object *obj;
736 ObjectClass *klass;
737 UserCreatable *uc;
738
739 klass = object_class_by_name(typename);
740 if (!klass) {
741 error_setg(errp, "invalid object type: %s", typename);
742 return NULL;
743 }
744
745 if (object_class_is_abstract(klass)) {
746 error_setg(errp, "object type '%s' is abstract", typename);
747 return NULL;
748 }
749 obj = object_new_with_type(klass->type);
750
751 if (!object_set_propv(obj, errp, vargs)) {
752 goto error;
753 }
754
755 if (id != NULL) {
756 object_property_add_child(parent, id, obj);
757 }
758
759 uc = (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE);
760 if (uc) {
761 if (!user_creatable_complete(uc, errp)) {
762 if (id != NULL) {
763 object_unparent(obj);
764 }
765 goto error;
766 }
767 }
768
769 object_unref(obj);
770 return obj;
771
772 error:
773 object_unref(obj);
774 return NULL;
775 }
776
777
778 bool object_set_props(Object *obj,
779 Error **errp,
780 ...)
781 {
782 va_list vargs;
783 bool ret;
784
785 va_start(vargs, errp);
786 ret = object_set_propv(obj, errp, vargs);
787 va_end(vargs);
788
789 return ret;
790 }
791
792
793 bool object_set_propv(Object *obj,
794 Error **errp,
795 va_list vargs)
796 {
797 const char *propname;
798
799 propname = va_arg(vargs, char *);
800 while (propname != NULL) {
801 const char *value = va_arg(vargs, char *);
802
803 g_assert(value != NULL);
804 if (!object_property_parse(obj, propname, value, errp)) {
805 return false;
806 }
807 propname = va_arg(vargs, char *);
808 }
809
810 return true;
811 }
812
813
814 Object *object_dynamic_cast(Object *obj, const char *typename)
815 {
816 if (obj && object_class_dynamic_cast(object_get_class(obj), typename)) {
817 return obj;
818 }
819
820 return NULL;
821 }
822
823 Object *object_dynamic_cast_assert(Object *obj, const char *typename,
824 const char *file, int line, const char *func)
825 {
826 trace_object_dynamic_cast_assert(obj ? obj->class->type->name : "(null)",
827 typename, file, line, func);
828
829 #ifdef CONFIG_QOM_CAST_DEBUG
830 int i;
831 Object *inst;
832
833 for (i = 0; obj && i < OBJECT_CLASS_CAST_CACHE; i++) {
834 if (atomic_read(&obj->class->object_cast_cache[i]) == typename) {
835 goto out;
836 }
837 }
838
839 inst = object_dynamic_cast(obj, typename);
840
841 if (!inst && obj) {
842 fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n",
843 file, line, func, obj, typename);
844 abort();
845 }
846
847 assert(obj == inst);
848
849 if (obj && obj == inst) {
850 for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) {
851 atomic_set(&obj->class->object_cast_cache[i - 1],
852 atomic_read(&obj->class->object_cast_cache[i]));
853 }
854 atomic_set(&obj->class->object_cast_cache[i - 1], typename);
855 }
856
857 out:
858 #endif
859 return obj;
860 }
861
862 ObjectClass *object_class_dynamic_cast(ObjectClass *class,
863 const char *typename)
864 {
865 ObjectClass *ret = NULL;
866 TypeImpl *target_type;
867 TypeImpl *type;
868
869 if (!class) {
870 return NULL;
871 }
872
873 /* A simple fast path that can trigger a lot for leaf classes. */
874 type = class->type;
875 if (type->name == typename) {
876 return class;
877 }
878
879 target_type = type_get_by_name(typename);
880 if (!target_type) {
881 /* target class type unknown, so fail the cast */
882 return NULL;
883 }
884
885 if (type->class->interfaces &&
886 type_is_ancestor(target_type, type_interface)) {
887 int found = 0;
888 GSList *i;
889
890 for (i = class->interfaces; i; i = i->next) {
891 ObjectClass *target_class = i->data;
892
893 if (type_is_ancestor(target_class->type, target_type)) {
894 ret = target_class;
895 found++;
896 }
897 }
898
899 /* The match was ambiguous, don't allow a cast */
900 if (found > 1) {
901 ret = NULL;
902 }
903 } else if (type_is_ancestor(type, target_type)) {
904 ret = class;
905 }
906
907 return ret;
908 }
909
910 ObjectClass *object_class_dynamic_cast_assert(ObjectClass *class,
911 const char *typename,
912 const char *file, int line,
913 const char *func)
914 {
915 ObjectClass *ret;
916
917 trace_object_class_dynamic_cast_assert(class ? class->type->name : "(null)",
918 typename, file, line, func);
919
920 #ifdef CONFIG_QOM_CAST_DEBUG
921 int i;
922
923 for (i = 0; class && i < OBJECT_CLASS_CAST_CACHE; i++) {
924 if (atomic_read(&class->class_cast_cache[i]) == typename) {
925 ret = class;
926 goto out;
927 }
928 }
929 #else
930 if (!class || !class->interfaces) {
931 return class;
932 }
933 #endif
934
935 ret = object_class_dynamic_cast(class, typename);
936 if (!ret && class) {
937 fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n",
938 file, line, func, class, typename);
939 abort();
940 }
941
942 #ifdef CONFIG_QOM_CAST_DEBUG
943 if (class && ret == class) {
944 for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) {
945 atomic_set(&class->class_cast_cache[i - 1],
946 atomic_read(&class->class_cast_cache[i]));
947 }
948 atomic_set(&class->class_cast_cache[i - 1], typename);
949 }
950 out:
951 #endif
952 return ret;
953 }
954
955 const char *object_get_typename(const Object *obj)
956 {
957 return obj->class->type->name;
958 }
959
960 ObjectClass *object_get_class(Object *obj)
961 {
962 return obj->class;
963 }
964
965 bool object_class_is_abstract(ObjectClass *klass)
966 {
967 return klass->type->abstract;
968 }
969
970 const char *object_class_get_name(ObjectClass *klass)
971 {
972 return klass->type->name;
973 }
974
975 ObjectClass *object_class_by_name(const char *typename)
976 {
977 TypeImpl *type = type_get_by_name(typename);
978
979 if (!type) {
980 return NULL;
981 }
982
983 type_initialize(type);
984
985 return type->class;
986 }
987
988 ObjectClass *module_object_class_by_name(const char *typename)
989 {
990 ObjectClass *oc;
991
992 oc = object_class_by_name(typename);
993 #ifdef CONFIG_MODULES
994 if (!oc) {
995 module_load_qom_one(typename);
996 oc = object_class_by_name(typename);
997 }
998 #endif
999 return oc;
1000 }
1001
1002 ObjectClass *object_class_get_parent(ObjectClass *class)
1003 {
1004 TypeImpl *type = type_get_parent(class->type);
1005
1006 if (!type) {
1007 return NULL;
1008 }
1009
1010 type_initialize(type);
1011
1012 return type->class;
1013 }
1014
1015 typedef struct OCFData
1016 {
1017 void (*fn)(ObjectClass *klass, void *opaque);
1018 const char *implements_type;
1019 bool include_abstract;
1020 void *opaque;
1021 } OCFData;
1022
1023 static void object_class_foreach_tramp(gpointer key, gpointer value,
1024 gpointer opaque)
1025 {
1026 OCFData *data = opaque;
1027 TypeImpl *type = value;
1028 ObjectClass *k;
1029
1030 type_initialize(type);
1031 k = type->class;
1032
1033 if (!data->include_abstract && type->abstract) {
1034 return;
1035 }
1036
1037 if (data->implements_type &&
1038 !object_class_dynamic_cast(k, data->implements_type)) {
1039 return;
1040 }
1041
1042 data->fn(k, data->opaque);
1043 }
1044
1045 void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque),
1046 const char *implements_type, bool include_abstract,
1047 void *opaque)
1048 {
1049 OCFData data = { fn, implements_type, include_abstract, opaque };
1050
1051 enumerating_types = true;
1052 g_hash_table_foreach(type_table_get(), object_class_foreach_tramp, &data);
1053 enumerating_types = false;
1054 }
1055
1056 static int do_object_child_foreach(Object *obj,
1057 int (*fn)(Object *child, void *opaque),
1058 void *opaque, bool recurse)
1059 {
1060 GHashTableIter iter;
1061 ObjectProperty *prop;
1062 int ret = 0;
1063
1064 g_hash_table_iter_init(&iter, obj->properties);
1065 while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) {
1066 if (object_property_is_child(prop)) {
1067 Object *child = prop->opaque;
1068
1069 ret = fn(child, opaque);
1070 if (ret != 0) {
1071 break;
1072 }
1073 if (recurse) {
1074 ret = do_object_child_foreach(child, fn, opaque, true);
1075 if (ret != 0) {
1076 break;
1077 }
1078 }
1079 }
1080 }
1081 return ret;
1082 }
1083
1084 int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque),
1085 void *opaque)
1086 {
1087 return do_object_child_foreach(obj, fn, opaque, false);
1088 }
1089
1090 int object_child_foreach_recursive(Object *obj,
1091 int (*fn)(Object *child, void *opaque),
1092 void *opaque)
1093 {
1094 return do_object_child_foreach(obj, fn, opaque, true);
1095 }
1096
1097 static void object_class_get_list_tramp(ObjectClass *klass, void *opaque)
1098 {
1099 GSList **list = opaque;
1100
1101 *list = g_slist_prepend(*list, klass);
1102 }
1103
1104 GSList *object_class_get_list(const char *implements_type,
1105 bool include_abstract)
1106 {
1107 GSList *list = NULL;
1108
1109 object_class_foreach(object_class_get_list_tramp,
1110 implements_type, include_abstract, &list);
1111 return list;
1112 }
1113
1114 static gint object_class_cmp(gconstpointer a, gconstpointer b)
1115 {
1116 return strcasecmp(object_class_get_name((ObjectClass *)a),
1117 object_class_get_name((ObjectClass *)b));
1118 }
1119
1120 GSList *object_class_get_list_sorted(const char *implements_type,
1121 bool include_abstract)
1122 {
1123 return g_slist_sort(object_class_get_list(implements_type, include_abstract),
1124 object_class_cmp);
1125 }
1126
1127 Object *object_ref(Object *obj)
1128 {
1129 if (!obj) {
1130 return NULL;
1131 }
1132 atomic_inc(&obj->ref);
1133 return obj;
1134 }
1135
1136 void object_unref(Object *obj)
1137 {
1138 if (!obj) {
1139 return;
1140 }
1141 g_assert(obj->ref > 0);
1142
1143 /* parent always holds a reference to its children */
1144 if (atomic_fetch_dec(&obj->ref) == 1) {
1145 object_finalize(obj);
1146 }
1147 }
1148
1149 ObjectProperty *
1150 object_property_try_add(Object *obj, const char *name, const char *type,
1151 ObjectPropertyAccessor *get,
1152 ObjectPropertyAccessor *set,
1153 ObjectPropertyRelease *release,
1154 void *opaque, Error **errp)
1155 {
1156 ObjectProperty *prop;
1157 size_t name_len = strlen(name);
1158
1159 if (name_len >= 3 && !memcmp(name + name_len - 3, "[*]", 4)) {
1160 int i;
1161 ObjectProperty *ret;
1162 char *name_no_array = g_strdup(name);
1163
1164 name_no_array[name_len - 3] = '\0';
1165 for (i = 0; ; ++i) {
1166 char *full_name = g_strdup_printf("%s[%d]", name_no_array, i);
1167
1168 ret = object_property_try_add(obj, full_name, type, get, set,
1169 release, opaque, NULL);
1170 g_free(full_name);
1171 if (ret) {
1172 break;
1173 }
1174 }
1175 g_free(name_no_array);
1176 return ret;
1177 }
1178
1179 if (object_property_find(obj, name, NULL) != NULL) {
1180 error_setg(errp, "attempt to add duplicate property '%s' to object (type '%s')",
1181 name, object_get_typename(obj));
1182 return NULL;
1183 }
1184
1185 prop = g_malloc0(sizeof(*prop));
1186
1187 prop->name = g_strdup(name);
1188 prop->type = g_strdup(type);
1189
1190 prop->get = get;
1191 prop->set = set;
1192 prop->release = release;
1193 prop->opaque = opaque;
1194
1195 g_hash_table_insert(obj->properties, prop->name, prop);
1196 return prop;
1197 }
1198
1199 ObjectProperty *
1200 object_property_add(Object *obj, const char *name, const char *type,
1201 ObjectPropertyAccessor *get,
1202 ObjectPropertyAccessor *set,
1203 ObjectPropertyRelease *release,
1204 void *opaque)
1205 {
1206 return object_property_try_add(obj, name, type, get, set, release,
1207 opaque, &error_abort);
1208 }
1209
1210 ObjectProperty *
1211 object_class_property_add(ObjectClass *klass,
1212 const char *name,
1213 const char *type,
1214 ObjectPropertyAccessor *get,
1215 ObjectPropertyAccessor *set,
1216 ObjectPropertyRelease *release,
1217 void *opaque)
1218 {
1219 ObjectProperty *prop;
1220
1221 assert(!object_class_property_find(klass, name, NULL));
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(klass->properties, prop->name, prop);
1234
1235 return prop;
1236 }
1237
1238 ObjectProperty *object_property_find(Object *obj, const char *name,
1239 Error **errp)
1240 {
1241 ObjectProperty *prop;
1242 ObjectClass *klass = object_get_class(obj);
1243
1244 prop = object_class_property_find(klass, name, NULL);
1245 if (prop) {
1246 return prop;
1247 }
1248
1249 prop = g_hash_table_lookup(obj->properties, name);
1250 if (prop) {
1251 return prop;
1252 }
1253
1254 error_setg(errp, "Property '.%s' not found", name);
1255 return NULL;
1256 }
1257
1258 void object_property_iter_init(ObjectPropertyIterator *iter,
1259 Object *obj)
1260 {
1261 g_hash_table_iter_init(&iter->iter, obj->properties);
1262 iter->nextclass = object_get_class(obj);
1263 }
1264
1265 ObjectProperty *object_property_iter_next(ObjectPropertyIterator *iter)
1266 {
1267 gpointer key, val;
1268 while (!g_hash_table_iter_next(&iter->iter, &key, &val)) {
1269 if (!iter->nextclass) {
1270 return NULL;
1271 }
1272 g_hash_table_iter_init(&iter->iter, iter->nextclass->properties);
1273 iter->nextclass = object_class_get_parent(iter->nextclass);
1274 }
1275 return val;
1276 }
1277
1278 void object_class_property_iter_init(ObjectPropertyIterator *iter,
1279 ObjectClass *klass)
1280 {
1281 g_hash_table_iter_init(&iter->iter, klass->properties);
1282 iter->nextclass = object_class_get_parent(klass);
1283 }
1284
1285 ObjectProperty *object_class_property_find(ObjectClass *klass, const char *name,
1286 Error **errp)
1287 {
1288 ObjectProperty *prop;
1289 ObjectClass *parent_klass;
1290
1291 parent_klass = object_class_get_parent(klass);
1292 if (parent_klass) {
1293 prop = object_class_property_find(parent_klass, name, NULL);
1294 if (prop) {
1295 return prop;
1296 }
1297 }
1298
1299 prop = g_hash_table_lookup(klass->properties, name);
1300 if (!prop) {
1301 error_setg(errp, "Property '.%s' not found", name);
1302 }
1303 return prop;
1304 }
1305
1306 void object_property_del(Object *obj, const char *name)
1307 {
1308 ObjectProperty *prop = g_hash_table_lookup(obj->properties, name);
1309
1310 if (prop->release) {
1311 prop->release(obj, name, prop->opaque);
1312 }
1313 g_hash_table_remove(obj->properties, name);
1314 }
1315
1316 bool object_property_get(Object *obj, const char *name, Visitor *v,
1317 Error **errp)
1318 {
1319 Error *err = NULL;
1320 ObjectProperty *prop = object_property_find(obj, name, errp);
1321
1322 if (prop == NULL) {
1323 return false;
1324 }
1325
1326 if (!prop->get) {
1327 error_setg(errp, QERR_PERMISSION_DENIED);
1328 return false;
1329 }
1330 prop->get(obj, v, name, prop->opaque, &err);
1331 error_propagate(errp, err);
1332 return !err;
1333 }
1334
1335 bool object_property_set(Object *obj, const char *name, Visitor *v,
1336 Error **errp)
1337 {
1338 Error *err = NULL;
1339 ObjectProperty *prop = object_property_find(obj, name, errp);
1340
1341 if (prop == NULL) {
1342 return false;
1343 }
1344
1345 if (!prop->set) {
1346 error_setg(errp, QERR_PERMISSION_DENIED);
1347 return false;
1348 }
1349 prop->set(obj, v, name, prop->opaque, &err);
1350 error_propagate(errp, err);
1351 return !err;
1352 }
1353
1354 bool object_property_set_str(Object *obj, const char *name,
1355 const char *value, Error **errp)
1356 {
1357 QString *qstr = qstring_from_str(value);
1358 bool ok = object_property_set_qobject(obj, name, QOBJECT(qstr), errp);
1359
1360 qobject_unref(qstr);
1361 return ok;
1362 }
1363
1364 char *object_property_get_str(Object *obj, const char *name,
1365 Error **errp)
1366 {
1367 QObject *ret = object_property_get_qobject(obj, name, errp);
1368 char *retval;
1369
1370 if (!ret) {
1371 return NULL;
1372 }
1373
1374 retval = g_strdup(qobject_get_try_str(ret));
1375 if (!retval) {
1376 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "string");
1377 }
1378
1379 qobject_unref(ret);
1380 return retval;
1381 }
1382
1383 bool object_property_set_link(Object *obj, const char *name,
1384 Object *value, Error **errp)
1385 {
1386 g_autofree char *path = NULL;
1387
1388 if (value) {
1389 path = object_get_canonical_path(value);
1390 }
1391 return object_property_set_str(obj, name, path ?: "", errp);
1392 }
1393
1394 Object *object_property_get_link(Object *obj, const char *name,
1395 Error **errp)
1396 {
1397 char *str = object_property_get_str(obj, name, errp);
1398 Object *target = NULL;
1399
1400 if (str && *str) {
1401 target = object_resolve_path(str, NULL);
1402 if (!target) {
1403 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
1404 "Device '%s' not found", str);
1405 }
1406 }
1407
1408 g_free(str);
1409 return target;
1410 }
1411
1412 bool object_property_set_bool(Object *obj, const char *name,
1413 bool value, Error **errp)
1414 {
1415 QBool *qbool = qbool_from_bool(value);
1416 bool ok = object_property_set_qobject(obj, name, QOBJECT(qbool), errp);
1417
1418 qobject_unref(qbool);
1419 return ok;
1420 }
1421
1422 bool object_property_get_bool(Object *obj, const char *name,
1423 Error **errp)
1424 {
1425 QObject *ret = object_property_get_qobject(obj, name, errp);
1426 QBool *qbool;
1427 bool retval;
1428
1429 if (!ret) {
1430 return false;
1431 }
1432 qbool = qobject_to(QBool, ret);
1433 if (!qbool) {
1434 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "boolean");
1435 retval = false;
1436 } else {
1437 retval = qbool_get_bool(qbool);
1438 }
1439
1440 qobject_unref(ret);
1441 return retval;
1442 }
1443
1444 bool object_property_set_int(Object *obj, const char *name,
1445 int64_t value, Error **errp)
1446 {
1447 QNum *qnum = qnum_from_int(value);
1448 bool ok = object_property_set_qobject(obj, name, QOBJECT(qnum), errp);
1449
1450 qobject_unref(qnum);
1451 return ok;
1452 }
1453
1454 int64_t object_property_get_int(Object *obj, const char *name,
1455 Error **errp)
1456 {
1457 QObject *ret = object_property_get_qobject(obj, name, errp);
1458 QNum *qnum;
1459 int64_t retval;
1460
1461 if (!ret) {
1462 return -1;
1463 }
1464
1465 qnum = qobject_to(QNum, ret);
1466 if (!qnum || !qnum_get_try_int(qnum, &retval)) {
1467 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "int");
1468 retval = -1;
1469 }
1470
1471 qobject_unref(ret);
1472 return retval;
1473 }
1474
1475 static void object_property_init_defval(Object *obj, ObjectProperty *prop)
1476 {
1477 Visitor *v = qobject_input_visitor_new(prop->defval);
1478
1479 assert(prop->set != NULL);
1480 prop->set(obj, v, prop->name, prop->opaque, &error_abort);
1481
1482 visit_free(v);
1483 }
1484
1485 static void object_property_set_default(ObjectProperty *prop, QObject *defval)
1486 {
1487 assert(!prop->defval);
1488 assert(!prop->init);
1489
1490 prop->defval = defval;
1491 prop->init = object_property_init_defval;
1492 }
1493
1494 void object_property_set_default_bool(ObjectProperty *prop, bool value)
1495 {
1496 object_property_set_default(prop, QOBJECT(qbool_from_bool(value)));
1497 }
1498
1499 void object_property_set_default_str(ObjectProperty *prop, const char *value)
1500 {
1501 object_property_set_default(prop, QOBJECT(qstring_from_str(value)));
1502 }
1503
1504 void object_property_set_default_int(ObjectProperty *prop, int64_t value)
1505 {
1506 object_property_set_default(prop, QOBJECT(qnum_from_int(value)));
1507 }
1508
1509 void object_property_set_default_uint(ObjectProperty *prop, uint64_t value)
1510 {
1511 object_property_set_default(prop, QOBJECT(qnum_from_uint(value)));
1512 }
1513
1514 bool object_property_set_uint(Object *obj, const char *name,
1515 uint64_t value, Error **errp)
1516 {
1517 QNum *qnum = qnum_from_uint(value);
1518 bool ok = object_property_set_qobject(obj, name, QOBJECT(qnum), errp);
1519
1520 qobject_unref(qnum);
1521 return ok;
1522 }
1523
1524 uint64_t object_property_get_uint(Object *obj, const char *name,
1525 Error **errp)
1526 {
1527 QObject *ret = object_property_get_qobject(obj, name, errp);
1528 QNum *qnum;
1529 uint64_t retval;
1530
1531 if (!ret) {
1532 return 0;
1533 }
1534 qnum = qobject_to(QNum, ret);
1535 if (!qnum || !qnum_get_try_uint(qnum, &retval)) {
1536 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "uint");
1537 retval = 0;
1538 }
1539
1540 qobject_unref(ret);
1541 return retval;
1542 }
1543
1544 typedef struct EnumProperty {
1545 const QEnumLookup *lookup;
1546 int (*get)(Object *, Error **);
1547 void (*set)(Object *, int, Error **);
1548 } EnumProperty;
1549
1550 int object_property_get_enum(Object *obj, const char *name,
1551 const char *typename, Error **errp)
1552 {
1553 char *str;
1554 int ret;
1555 ObjectProperty *prop = object_property_find(obj, name, errp);
1556 EnumProperty *enumprop;
1557
1558 if (prop == NULL) {
1559 return 0;
1560 }
1561
1562 if (!g_str_equal(prop->type, typename)) {
1563 error_setg(errp, "Property %s on %s is not '%s' enum type",
1564 name, object_class_get_name(
1565 object_get_class(obj)), typename);
1566 return 0;
1567 }
1568
1569 enumprop = prop->opaque;
1570
1571 str = object_property_get_str(obj, name, errp);
1572 if (!str) {
1573 return 0;
1574 }
1575
1576 ret = qapi_enum_parse(enumprop->lookup, str, -1, errp);
1577 g_free(str);
1578
1579 return ret;
1580 }
1581
1582 bool object_property_parse(Object *obj, const char *name,
1583 const char *string, Error **errp)
1584 {
1585 Visitor *v = string_input_visitor_new(string);
1586 bool ok = object_property_set(obj, name, v, errp);
1587
1588 visit_free(v);
1589 return ok;
1590 }
1591
1592 char *object_property_print(Object *obj, const char *name, bool human,
1593 Error **errp)
1594 {
1595 Visitor *v;
1596 char *string = NULL;
1597
1598 v = string_output_visitor_new(human, &string);
1599 if (!object_property_get(obj, name, v, errp)) {
1600 goto out;
1601 }
1602
1603 visit_complete(v, &string);
1604
1605 out:
1606 visit_free(v);
1607 return string;
1608 }
1609
1610 const char *object_property_get_type(Object *obj, const char *name, Error **errp)
1611 {
1612 ObjectProperty *prop = object_property_find(obj, name, errp);
1613 if (prop == NULL) {
1614 return NULL;
1615 }
1616
1617 return prop->type;
1618 }
1619
1620 Object *object_get_root(void)
1621 {
1622 static Object *root;
1623
1624 if (!root) {
1625 root = object_new("container");
1626 }
1627
1628 return root;
1629 }
1630
1631 Object *object_get_objects_root(void)
1632 {
1633 return container_get(object_get_root(), "/objects");
1634 }
1635
1636 Object *object_get_internal_root(void)
1637 {
1638 static Object *internal_root;
1639
1640 if (!internal_root) {
1641 internal_root = object_new("container");
1642 }
1643
1644 return internal_root;
1645 }
1646
1647 static void object_get_child_property(Object *obj, Visitor *v,
1648 const char *name, void *opaque,
1649 Error **errp)
1650 {
1651 Object *child = opaque;
1652 char *path;
1653
1654 path = object_get_canonical_path(child);
1655 visit_type_str(v, name, &path, errp);
1656 g_free(path);
1657 }
1658
1659 static Object *object_resolve_child_property(Object *parent, void *opaque,
1660 const char *part)
1661 {
1662 return opaque;
1663 }
1664
1665 static void object_finalize_child_property(Object *obj, const char *name,
1666 void *opaque)
1667 {
1668 Object *child = opaque;
1669
1670 if (child->class->unparent) {
1671 (child->class->unparent)(child);
1672 }
1673 child->parent = NULL;
1674 object_unref(child);
1675 }
1676
1677 ObjectProperty *
1678 object_property_try_add_child(Object *obj, const char *name,
1679 Object *child, Error **errp)
1680 {
1681 g_autofree char *type = NULL;
1682 ObjectProperty *op;
1683
1684 assert(!child->parent);
1685
1686 type = g_strdup_printf("child<%s>", object_get_typename(child));
1687
1688 op = object_property_try_add(obj, name, type, object_get_child_property,
1689 NULL, object_finalize_child_property,
1690 child, errp);
1691 if (!op) {
1692 return NULL;
1693 }
1694 op->resolve = object_resolve_child_property;
1695 object_ref(child);
1696 child->parent = obj;
1697 return op;
1698 }
1699
1700 ObjectProperty *
1701 object_property_add_child(Object *obj, const char *name,
1702 Object *child)
1703 {
1704 return object_property_try_add_child(obj, name, child, &error_abort);
1705 }
1706
1707 void object_property_allow_set_link(const Object *obj, const char *name,
1708 Object *val, Error **errp)
1709 {
1710 /* Allow the link to be set, always */
1711 }
1712
1713 typedef struct {
1714 union {
1715 Object **targetp;
1716 Object *target; /* if OBJ_PROP_LINK_DIRECT, when holding the pointer */
1717 ptrdiff_t offset; /* if OBJ_PROP_LINK_CLASS */
1718 };
1719 void (*check)(const Object *, const char *, Object *, Error **);
1720 ObjectPropertyLinkFlags flags;
1721 } LinkProperty;
1722
1723 static Object **
1724 object_link_get_targetp(Object *obj, LinkProperty *lprop)
1725 {
1726 if (lprop->flags & OBJ_PROP_LINK_DIRECT) {
1727 return &lprop->target;
1728 } else if (lprop->flags & OBJ_PROP_LINK_CLASS) {
1729 return (void *)obj + lprop->offset;
1730 } else {
1731 return lprop->targetp;
1732 }
1733 }
1734
1735 static void object_get_link_property(Object *obj, Visitor *v,
1736 const char *name, void *opaque,
1737 Error **errp)
1738 {
1739 LinkProperty *lprop = opaque;
1740 Object **targetp = object_link_get_targetp(obj, lprop);
1741 char *path;
1742
1743 if (*targetp) {
1744 path = object_get_canonical_path(*targetp);
1745 visit_type_str(v, name, &path, errp);
1746 g_free(path);
1747 } else {
1748 path = (char *)"";
1749 visit_type_str(v, name, &path, errp);
1750 }
1751 }
1752
1753 /*
1754 * object_resolve_link:
1755 *
1756 * Lookup an object and ensure its type matches the link property type. This
1757 * is similar to object_resolve_path() except type verification against the
1758 * link property is performed.
1759 *
1760 * Returns: The matched object or NULL on path lookup failures.
1761 */
1762 static Object *object_resolve_link(Object *obj, const char *name,
1763 const char *path, Error **errp)
1764 {
1765 const char *type;
1766 char *target_type;
1767 bool ambiguous = false;
1768 Object *target;
1769
1770 /* Go from link<FOO> to FOO. */
1771 type = object_property_get_type(obj, name, NULL);
1772 target_type = g_strndup(&type[5], strlen(type) - 6);
1773 target = object_resolve_path_type(path, target_type, &ambiguous);
1774
1775 if (ambiguous) {
1776 error_setg(errp, "Path '%s' does not uniquely identify an object",
1777 path);
1778 } else if (!target) {
1779 target = object_resolve_path(path, &ambiguous);
1780 if (target || ambiguous) {
1781 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, target_type);
1782 } else {
1783 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
1784 "Device '%s' not found", path);
1785 }
1786 target = NULL;
1787 }
1788 g_free(target_type);
1789
1790 return target;
1791 }
1792
1793 static void object_set_link_property(Object *obj, Visitor *v,
1794 const char *name, void *opaque,
1795 Error **errp)
1796 {
1797 Error *local_err = NULL;
1798 LinkProperty *prop = opaque;
1799 Object **targetp = object_link_get_targetp(obj, prop);
1800 Object *old_target = *targetp;
1801 Object *new_target;
1802 char *path = NULL;
1803
1804 if (!visit_type_str(v, name, &path, errp)) {
1805 return;
1806 }
1807
1808 if (*path) {
1809 new_target = object_resolve_link(obj, name, path, errp);
1810 if (!new_target) {
1811 g_free(path);
1812 return;
1813 }
1814 } else {
1815 new_target = NULL;
1816 }
1817
1818 g_free(path);
1819
1820 prop->check(obj, name, new_target, &local_err);
1821 if (local_err) {
1822 error_propagate(errp, local_err);
1823 return;
1824 }
1825
1826 *targetp = new_target;
1827 if (prop->flags & OBJ_PROP_LINK_STRONG) {
1828 object_ref(new_target);
1829 object_unref(old_target);
1830 }
1831 }
1832
1833 static Object *object_resolve_link_property(Object *parent, void *opaque,
1834 const char *part)
1835 {
1836 LinkProperty *lprop = opaque;
1837
1838 return *object_link_get_targetp(parent, lprop);
1839 }
1840
1841 static void object_release_link_property(Object *obj, const char *name,
1842 void *opaque)
1843 {
1844 LinkProperty *prop = opaque;
1845 Object **targetp = object_link_get_targetp(obj, prop);
1846
1847 if ((prop->flags & OBJ_PROP_LINK_STRONG) && *targetp) {
1848 object_unref(*targetp);
1849 }
1850 if (!(prop->flags & OBJ_PROP_LINK_CLASS)) {
1851 g_free(prop);
1852 }
1853 }
1854
1855 static ObjectProperty *
1856 object_add_link_prop(Object *obj, const char *name,
1857 const char *type, void *ptr,
1858 void (*check)(const Object *, const char *,
1859 Object *, Error **),
1860 ObjectPropertyLinkFlags flags)
1861 {
1862 LinkProperty *prop = g_malloc(sizeof(*prop));
1863 g_autofree char *full_type = NULL;
1864 ObjectProperty *op;
1865
1866 if (flags & OBJ_PROP_LINK_DIRECT) {
1867 prop->target = ptr;
1868 } else {
1869 prop->targetp = ptr;
1870 }
1871 prop->check = check;
1872 prop->flags = flags;
1873
1874 full_type = g_strdup_printf("link<%s>", type);
1875
1876 op = object_property_add(obj, name, full_type,
1877 object_get_link_property,
1878 check ? object_set_link_property : NULL,
1879 object_release_link_property,
1880 prop);
1881 op->resolve = object_resolve_link_property;
1882 return op;
1883 }
1884
1885 ObjectProperty *
1886 object_property_add_link(Object *obj, const char *name,
1887 const char *type, Object **targetp,
1888 void (*check)(const Object *, const char *,
1889 Object *, Error **),
1890 ObjectPropertyLinkFlags flags)
1891 {
1892 return object_add_link_prop(obj, name, type, targetp, check, flags);
1893 }
1894
1895 ObjectProperty *
1896 object_class_property_add_link(ObjectClass *oc,
1897 const char *name,
1898 const char *type, ptrdiff_t offset,
1899 void (*check)(const Object *obj, const char *name,
1900 Object *val, Error **errp),
1901 ObjectPropertyLinkFlags flags)
1902 {
1903 LinkProperty *prop = g_new0(LinkProperty, 1);
1904 char *full_type;
1905 ObjectProperty *op;
1906
1907 prop->offset = offset;
1908 prop->check = check;
1909 prop->flags = flags | OBJ_PROP_LINK_CLASS;
1910
1911 full_type = g_strdup_printf("link<%s>", type);
1912
1913 op = object_class_property_add(oc, name, full_type,
1914 object_get_link_property,
1915 check ? object_set_link_property : NULL,
1916 object_release_link_property,
1917 prop);
1918
1919 op->resolve = object_resolve_link_property;
1920
1921 g_free(full_type);
1922 return op;
1923 }
1924
1925 ObjectProperty *
1926 object_property_add_const_link(Object *obj, const char *name,
1927 Object *target)
1928 {
1929 return object_add_link_prop(obj, name,
1930 object_get_typename(target), target,
1931 NULL, OBJ_PROP_LINK_DIRECT);
1932 }
1933
1934 const char *object_get_canonical_path_component(const Object *obj)
1935 {
1936 ObjectProperty *prop = NULL;
1937 GHashTableIter iter;
1938
1939 if (obj->parent == NULL) {
1940 return NULL;
1941 }
1942
1943 g_hash_table_iter_init(&iter, obj->parent->properties);
1944 while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) {
1945 if (!object_property_is_child(prop)) {
1946 continue;
1947 }
1948
1949 if (prop->opaque == obj) {
1950 return prop->name;
1951 }
1952 }
1953
1954 /* obj had a parent but was not a child, should never happen */
1955 g_assert_not_reached();
1956 return NULL;
1957 }
1958
1959 char *object_get_canonical_path(const Object *obj)
1960 {
1961 Object *root = object_get_root();
1962 char *newpath, *path = NULL;
1963
1964 if (obj == root) {
1965 return g_strdup("/");
1966 }
1967
1968 do {
1969 const char *component = object_get_canonical_path_component(obj);
1970
1971 if (!component) {
1972 /* A canonical path must be complete, so discard what was
1973 * collected so far.
1974 */
1975 g_free(path);
1976 return NULL;
1977 }
1978
1979 newpath = g_strdup_printf("/%s%s", component, path ? path : "");
1980 g_free(path);
1981 path = newpath;
1982 obj = obj->parent;
1983 } while (obj != root);
1984
1985 return path;
1986 }
1987
1988 Object *object_resolve_path_component(Object *parent, const char *part)
1989 {
1990 ObjectProperty *prop = object_property_find(parent, part, NULL);
1991 if (prop == NULL) {
1992 return NULL;
1993 }
1994
1995 if (prop->resolve) {
1996 return prop->resolve(parent, prop->opaque, part);
1997 } else {
1998 return NULL;
1999 }
2000 }
2001
2002 static Object *object_resolve_abs_path(Object *parent,
2003 char **parts,
2004 const char *typename)
2005 {
2006 Object *child;
2007
2008 if (*parts == NULL) {
2009 return object_dynamic_cast(parent, typename);
2010 }
2011
2012 if (strcmp(*parts, "") == 0) {
2013 return object_resolve_abs_path(parent, parts + 1, typename);
2014 }
2015
2016 child = object_resolve_path_component(parent, *parts);
2017 if (!child) {
2018 return NULL;
2019 }
2020
2021 return object_resolve_abs_path(child, parts + 1, typename);
2022 }
2023
2024 static Object *object_resolve_partial_path(Object *parent,
2025 char **parts,
2026 const char *typename,
2027 bool *ambiguous)
2028 {
2029 Object *obj;
2030 GHashTableIter iter;
2031 ObjectProperty *prop;
2032
2033 obj = object_resolve_abs_path(parent, parts, typename);
2034
2035 g_hash_table_iter_init(&iter, parent->properties);
2036 while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) {
2037 Object *found;
2038
2039 if (!object_property_is_child(prop)) {
2040 continue;
2041 }
2042
2043 found = object_resolve_partial_path(prop->opaque, parts,
2044 typename, ambiguous);
2045 if (found) {
2046 if (obj) {
2047 *ambiguous = true;
2048 return NULL;
2049 }
2050 obj = found;
2051 }
2052
2053 if (*ambiguous) {
2054 return NULL;
2055 }
2056 }
2057
2058 return obj;
2059 }
2060
2061 Object *object_resolve_path_type(const char *path, const char *typename,
2062 bool *ambiguousp)
2063 {
2064 Object *obj;
2065 char **parts;
2066
2067 parts = g_strsplit(path, "/", 0);
2068 assert(parts);
2069
2070 if (parts[0] == NULL || strcmp(parts[0], "") != 0) {
2071 bool ambiguous = false;
2072 obj = object_resolve_partial_path(object_get_root(), parts,
2073 typename, &ambiguous);
2074 if (ambiguousp) {
2075 *ambiguousp = ambiguous;
2076 }
2077 } else {
2078 obj = object_resolve_abs_path(object_get_root(), parts + 1, typename);
2079 }
2080
2081 g_strfreev(parts);
2082
2083 return obj;
2084 }
2085
2086 Object *object_resolve_path(const char *path, bool *ambiguous)
2087 {
2088 return object_resolve_path_type(path, TYPE_OBJECT, ambiguous);
2089 }
2090
2091 typedef struct StringProperty
2092 {
2093 char *(*get)(Object *, Error **);
2094 void (*set)(Object *, const char *, Error **);
2095 } StringProperty;
2096
2097 static void property_get_str(Object *obj, Visitor *v, const char *name,
2098 void *opaque, Error **errp)
2099 {
2100 StringProperty *prop = opaque;
2101 char *value;
2102 Error *err = NULL;
2103
2104 value = prop->get(obj, &err);
2105 if (err) {
2106 error_propagate(errp, err);
2107 return;
2108 }
2109
2110 visit_type_str(v, name, &value, errp);
2111 g_free(value);
2112 }
2113
2114 static void property_set_str(Object *obj, Visitor *v, const char *name,
2115 void *opaque, Error **errp)
2116 {
2117 StringProperty *prop = opaque;
2118 char *value;
2119
2120 if (!visit_type_str(v, name, &value, errp)) {
2121 return;
2122 }
2123
2124 prop->set(obj, value, errp);
2125 g_free(value);
2126 }
2127
2128 static void property_release_str(Object *obj, const char *name,
2129 void *opaque)
2130 {
2131 StringProperty *prop = opaque;
2132 g_free(prop);
2133 }
2134
2135 ObjectProperty *
2136 object_property_add_str(Object *obj, const char *name,
2137 char *(*get)(Object *, Error **),
2138 void (*set)(Object *, const char *, Error **))
2139 {
2140 StringProperty *prop = g_malloc0(sizeof(*prop));
2141
2142 prop->get = get;
2143 prop->set = set;
2144
2145 return object_property_add(obj, name, "string",
2146 get ? property_get_str : NULL,
2147 set ? property_set_str : NULL,
2148 property_release_str,
2149 prop);
2150 }
2151
2152 ObjectProperty *
2153 object_class_property_add_str(ObjectClass *klass, const char *name,
2154 char *(*get)(Object *, Error **),
2155 void (*set)(Object *, const char *,
2156 Error **))
2157 {
2158 StringProperty *prop = g_malloc0(sizeof(*prop));
2159
2160 prop->get = get;
2161 prop->set = set;
2162
2163 return object_class_property_add(klass, name, "string",
2164 get ? property_get_str : NULL,
2165 set ? property_set_str : NULL,
2166 NULL,
2167 prop);
2168 }
2169
2170 typedef struct BoolProperty
2171 {
2172 bool (*get)(Object *, Error **);
2173 void (*set)(Object *, bool, Error **);
2174 } BoolProperty;
2175
2176 static void property_get_bool(Object *obj, Visitor *v, const char *name,
2177 void *opaque, Error **errp)
2178 {
2179 BoolProperty *prop = opaque;
2180 bool value;
2181 Error *err = NULL;
2182
2183 value = prop->get(obj, &err);
2184 if (err) {
2185 error_propagate(errp, err);
2186 return;
2187 }
2188
2189 visit_type_bool(v, name, &value, errp);
2190 }
2191
2192 static void property_set_bool(Object *obj, Visitor *v, const char *name,
2193 void *opaque, Error **errp)
2194 {
2195 BoolProperty *prop = opaque;
2196 bool value;
2197
2198 if (!visit_type_bool(v, name, &value, errp)) {
2199 return;
2200 }
2201
2202 prop->set(obj, value, errp);
2203 }
2204
2205 static void property_release_bool(Object *obj, const char *name,
2206 void *opaque)
2207 {
2208 BoolProperty *prop = opaque;
2209 g_free(prop);
2210 }
2211
2212 ObjectProperty *
2213 object_property_add_bool(Object *obj, const char *name,
2214 bool (*get)(Object *, Error **),
2215 void (*set)(Object *, bool, Error **))
2216 {
2217 BoolProperty *prop = g_malloc0(sizeof(*prop));
2218
2219 prop->get = get;
2220 prop->set = set;
2221
2222 return object_property_add(obj, name, "bool",
2223 get ? property_get_bool : NULL,
2224 set ? property_set_bool : NULL,
2225 property_release_bool,
2226 prop);
2227 }
2228
2229 ObjectProperty *
2230 object_class_property_add_bool(ObjectClass *klass, const char *name,
2231 bool (*get)(Object *, Error **),
2232 void (*set)(Object *, bool, Error **))
2233 {
2234 BoolProperty *prop = g_malloc0(sizeof(*prop));
2235
2236 prop->get = get;
2237 prop->set = set;
2238
2239 return object_class_property_add(klass, name, "bool",
2240 get ? property_get_bool : NULL,
2241 set ? property_set_bool : NULL,
2242 NULL,
2243 prop);
2244 }
2245
2246 static void property_get_enum(Object *obj, Visitor *v, const char *name,
2247 void *opaque, Error **errp)
2248 {
2249 EnumProperty *prop = opaque;
2250 int value;
2251 Error *err = NULL;
2252
2253 value = prop->get(obj, &err);
2254 if (err) {
2255 error_propagate(errp, err);
2256 return;
2257 }
2258
2259 visit_type_enum(v, name, &value, prop->lookup, errp);
2260 }
2261
2262 static void property_set_enum(Object *obj, Visitor *v, const char *name,
2263 void *opaque, Error **errp)
2264 {
2265 EnumProperty *prop = opaque;
2266 int value;
2267
2268 if (!visit_type_enum(v, name, &value, prop->lookup, errp)) {
2269 return;
2270 }
2271 prop->set(obj, value, errp);
2272 }
2273
2274 static void property_release_enum(Object *obj, const char *name,
2275 void *opaque)
2276 {
2277 EnumProperty *prop = opaque;
2278 g_free(prop);
2279 }
2280
2281 ObjectProperty *
2282 object_property_add_enum(Object *obj, const char *name,
2283 const char *typename,
2284 const QEnumLookup *lookup,
2285 int (*get)(Object *, Error **),
2286 void (*set)(Object *, int, Error **))
2287 {
2288 EnumProperty *prop = g_malloc(sizeof(*prop));
2289
2290 prop->lookup = lookup;
2291 prop->get = get;
2292 prop->set = set;
2293
2294 return object_property_add(obj, name, typename,
2295 get ? property_get_enum : NULL,
2296 set ? property_set_enum : NULL,
2297 property_release_enum,
2298 prop);
2299 }
2300
2301 ObjectProperty *
2302 object_class_property_add_enum(ObjectClass *klass, const char *name,
2303 const char *typename,
2304 const QEnumLookup *lookup,
2305 int (*get)(Object *, Error **),
2306 void (*set)(Object *, int, Error **))
2307 {
2308 EnumProperty *prop = g_malloc(sizeof(*prop));
2309
2310 prop->lookup = lookup;
2311 prop->get = get;
2312 prop->set = set;
2313
2314 return object_class_property_add(klass, name, typename,
2315 get ? property_get_enum : NULL,
2316 set ? property_set_enum : NULL,
2317 NULL,
2318 prop);
2319 }
2320
2321 typedef struct TMProperty {
2322 void (*get)(Object *, struct tm *, Error **);
2323 } TMProperty;
2324
2325 static void property_get_tm(Object *obj, Visitor *v, const char *name,
2326 void *opaque, Error **errp)
2327 {
2328 TMProperty *prop = opaque;
2329 Error *err = NULL;
2330 struct tm value;
2331
2332 prop->get(obj, &value, &err);
2333 if (err) {
2334 error_propagate(errp, err);
2335 return;
2336 }
2337
2338 if (!visit_start_struct(v, name, NULL, 0, errp)) {
2339 return;
2340 }
2341 if (!visit_type_int32(v, "tm_year", &value.tm_year, errp)) {
2342 goto out_end;
2343 }
2344 if (!visit_type_int32(v, "tm_mon", &value.tm_mon, errp)) {
2345 goto out_end;
2346 }
2347 if (!visit_type_int32(v, "tm_mday", &value.tm_mday, errp)) {
2348 goto out_end;
2349 }
2350 if (!visit_type_int32(v, "tm_hour", &value.tm_hour, errp)) {
2351 goto out_end;
2352 }
2353 if (!visit_type_int32(v, "tm_min", &value.tm_min, errp)) {
2354 goto out_end;
2355 }
2356 if (!visit_type_int32(v, "tm_sec", &value.tm_sec, errp)) {
2357 goto out_end;
2358 }
2359 visit_check_struct(v, errp);
2360 out_end:
2361 visit_end_struct(v, NULL);
2362 }
2363
2364 static void property_release_tm(Object *obj, const char *name,
2365 void *opaque)
2366 {
2367 TMProperty *prop = opaque;
2368 g_free(prop);
2369 }
2370
2371 ObjectProperty *
2372 object_property_add_tm(Object *obj, const char *name,
2373 void (*get)(Object *, struct tm *, Error **))
2374 {
2375 TMProperty *prop = g_malloc0(sizeof(*prop));
2376
2377 prop->get = get;
2378
2379 return object_property_add(obj, name, "struct tm",
2380 get ? property_get_tm : NULL, NULL,
2381 property_release_tm,
2382 prop);
2383 }
2384
2385 ObjectProperty *
2386 object_class_property_add_tm(ObjectClass *klass, const char *name,
2387 void (*get)(Object *, struct tm *, Error **))
2388 {
2389 TMProperty *prop = g_malloc0(sizeof(*prop));
2390
2391 prop->get = get;
2392
2393 return object_class_property_add(klass, name, "struct tm",
2394 get ? property_get_tm : NULL,
2395 NULL, NULL, prop);
2396 }
2397
2398 static char *object_get_type(Object *obj, Error **errp)
2399 {
2400 return g_strdup(object_get_typename(obj));
2401 }
2402
2403 static void property_get_uint8_ptr(Object *obj, Visitor *v, const char *name,
2404 void *opaque, Error **errp)
2405 {
2406 uint8_t value = *(uint8_t *)opaque;
2407 visit_type_uint8(v, name, &value, errp);
2408 }
2409
2410 static void property_set_uint8_ptr(Object *obj, Visitor *v, const char *name,
2411 void *opaque, Error **errp)
2412 {
2413 uint8_t *field = opaque;
2414 uint8_t value;
2415
2416 if (!visit_type_uint8(v, name, &value, errp)) {
2417 return;
2418 }
2419
2420 *field = value;
2421 }
2422
2423 static void property_get_uint16_ptr(Object *obj, Visitor *v, const char *name,
2424 void *opaque, Error **errp)
2425 {
2426 uint16_t value = *(uint16_t *)opaque;
2427 visit_type_uint16(v, name, &value, errp);
2428 }
2429
2430 static void property_set_uint16_ptr(Object *obj, Visitor *v, const char *name,
2431 void *opaque, Error **errp)
2432 {
2433 uint16_t *field = opaque;
2434 uint16_t value;
2435
2436 if (!visit_type_uint16(v, name, &value, errp)) {
2437 return;
2438 }
2439
2440 *field = value;
2441 }
2442
2443 static void property_get_uint32_ptr(Object *obj, Visitor *v, const char *name,
2444 void *opaque, Error **errp)
2445 {
2446 uint32_t value = *(uint32_t *)opaque;
2447 visit_type_uint32(v, name, &value, errp);
2448 }
2449
2450 static void property_set_uint32_ptr(Object *obj, Visitor *v, const char *name,
2451 void *opaque, Error **errp)
2452 {
2453 uint32_t *field = opaque;
2454 uint32_t value;
2455
2456 if (!visit_type_uint32(v, name, &value, errp)) {
2457 return;
2458 }
2459
2460 *field = value;
2461 }
2462
2463 static void property_get_uint64_ptr(Object *obj, Visitor *v, const char *name,
2464 void *opaque, Error **errp)
2465 {
2466 uint64_t value = *(uint64_t *)opaque;
2467 visit_type_uint64(v, name, &value, errp);
2468 }
2469
2470 static void property_set_uint64_ptr(Object *obj, Visitor *v, const char *name,
2471 void *opaque, Error **errp)
2472 {
2473 uint64_t *field = opaque;
2474 uint64_t value;
2475
2476 if (!visit_type_uint64(v, name, &value, errp)) {
2477 return;
2478 }
2479
2480 *field = value;
2481 }
2482
2483 ObjectProperty *
2484 object_property_add_uint8_ptr(Object *obj, const char *name,
2485 const uint8_t *v,
2486 ObjectPropertyFlags flags)
2487 {
2488 ObjectPropertyAccessor *getter = NULL;
2489 ObjectPropertyAccessor *setter = NULL;
2490
2491 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2492 getter = property_get_uint8_ptr;
2493 }
2494
2495 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2496 setter = property_set_uint8_ptr;
2497 }
2498
2499 return object_property_add(obj, name, "uint8",
2500 getter, setter, NULL, (void *)v);
2501 }
2502
2503 ObjectProperty *
2504 object_class_property_add_uint8_ptr(ObjectClass *klass, const char *name,
2505 const uint8_t *v,
2506 ObjectPropertyFlags flags)
2507 {
2508 ObjectPropertyAccessor *getter = NULL;
2509 ObjectPropertyAccessor *setter = NULL;
2510
2511 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2512 getter = property_get_uint8_ptr;
2513 }
2514
2515 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2516 setter = property_set_uint8_ptr;
2517 }
2518
2519 return object_class_property_add(klass, name, "uint8",
2520 getter, setter, NULL, (void *)v);
2521 }
2522
2523 ObjectProperty *
2524 object_property_add_uint16_ptr(Object *obj, const char *name,
2525 const uint16_t *v,
2526 ObjectPropertyFlags flags)
2527 {
2528 ObjectPropertyAccessor *getter = NULL;
2529 ObjectPropertyAccessor *setter = NULL;
2530
2531 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2532 getter = property_get_uint16_ptr;
2533 }
2534
2535 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2536 setter = property_set_uint16_ptr;
2537 }
2538
2539 return object_property_add(obj, name, "uint16",
2540 getter, setter, NULL, (void *)v);
2541 }
2542
2543 ObjectProperty *
2544 object_class_property_add_uint16_ptr(ObjectClass *klass, const char *name,
2545 const uint16_t *v,
2546 ObjectPropertyFlags flags)
2547 {
2548 ObjectPropertyAccessor *getter = NULL;
2549 ObjectPropertyAccessor *setter = NULL;
2550
2551 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2552 getter = property_get_uint16_ptr;
2553 }
2554
2555 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2556 setter = property_set_uint16_ptr;
2557 }
2558
2559 return object_class_property_add(klass, name, "uint16",
2560 getter, setter, NULL, (void *)v);
2561 }
2562
2563 ObjectProperty *
2564 object_property_add_uint32_ptr(Object *obj, const char *name,
2565 const uint32_t *v,
2566 ObjectPropertyFlags flags)
2567 {
2568 ObjectPropertyAccessor *getter = NULL;
2569 ObjectPropertyAccessor *setter = NULL;
2570
2571 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2572 getter = property_get_uint32_ptr;
2573 }
2574
2575 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2576 setter = property_set_uint32_ptr;
2577 }
2578
2579 return object_property_add(obj, name, "uint32",
2580 getter, setter, NULL, (void *)v);
2581 }
2582
2583 ObjectProperty *
2584 object_class_property_add_uint32_ptr(ObjectClass *klass, const char *name,
2585 const uint32_t *v,
2586 ObjectPropertyFlags flags)
2587 {
2588 ObjectPropertyAccessor *getter = NULL;
2589 ObjectPropertyAccessor *setter = NULL;
2590
2591 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2592 getter = property_get_uint32_ptr;
2593 }
2594
2595 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2596 setter = property_set_uint32_ptr;
2597 }
2598
2599 return object_class_property_add(klass, name, "uint32",
2600 getter, setter, NULL, (void *)v);
2601 }
2602
2603 ObjectProperty *
2604 object_property_add_uint64_ptr(Object *obj, const char *name,
2605 const uint64_t *v,
2606 ObjectPropertyFlags flags)
2607 {
2608 ObjectPropertyAccessor *getter = NULL;
2609 ObjectPropertyAccessor *setter = NULL;
2610
2611 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2612 getter = property_get_uint64_ptr;
2613 }
2614
2615 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2616 setter = property_set_uint64_ptr;
2617 }
2618
2619 return object_property_add(obj, name, "uint64",
2620 getter, setter, NULL, (void *)v);
2621 }
2622
2623 ObjectProperty *
2624 object_class_property_add_uint64_ptr(ObjectClass *klass, const char *name,
2625 const uint64_t *v,
2626 ObjectPropertyFlags flags)
2627 {
2628 ObjectPropertyAccessor *getter = NULL;
2629 ObjectPropertyAccessor *setter = NULL;
2630
2631 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
2632 getter = property_get_uint64_ptr;
2633 }
2634
2635 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
2636 setter = property_set_uint64_ptr;
2637 }
2638
2639 return object_class_property_add(klass, name, "uint64",
2640 getter, setter, NULL, (void *)v);
2641 }
2642
2643 typedef struct {
2644 Object *target_obj;
2645 char *target_name;
2646 } AliasProperty;
2647
2648 static void property_get_alias(Object *obj, Visitor *v, const char *name,
2649 void *opaque, Error **errp)
2650 {
2651 AliasProperty *prop = opaque;
2652
2653 object_property_get(prop->target_obj, prop->target_name, v, errp);
2654 }
2655
2656 static void property_set_alias(Object *obj, Visitor *v, const char *name,
2657 void *opaque, Error **errp)
2658 {
2659 AliasProperty *prop = opaque;
2660
2661 object_property_set(prop->target_obj, prop->target_name, v, errp);
2662 }
2663
2664 static Object *property_resolve_alias(Object *obj, void *opaque,
2665 const char *part)
2666 {
2667 AliasProperty *prop = opaque;
2668
2669 return object_resolve_path_component(prop->target_obj, prop->target_name);
2670 }
2671
2672 static void property_release_alias(Object *obj, const char *name, void *opaque)
2673 {
2674 AliasProperty *prop = opaque;
2675
2676 g_free(prop->target_name);
2677 g_free(prop);
2678 }
2679
2680 ObjectProperty *
2681 object_property_add_alias(Object *obj, const char *name,
2682 Object *target_obj, const char *target_name)
2683 {
2684 AliasProperty *prop;
2685 ObjectProperty *op;
2686 ObjectProperty *target_prop;
2687 g_autofree char *prop_type = NULL;
2688
2689 target_prop = object_property_find(target_obj, target_name,
2690 &error_abort);
2691
2692 if (object_property_is_child(target_prop)) {
2693 prop_type = g_strdup_printf("link%s",
2694 target_prop->type + strlen("child"));
2695 } else {
2696 prop_type = g_strdup(target_prop->type);
2697 }
2698
2699 prop = g_malloc(sizeof(*prop));
2700 prop->target_obj = target_obj;
2701 prop->target_name = g_strdup(target_name);
2702
2703 op = object_property_add(obj, name, prop_type,
2704 property_get_alias,
2705 property_set_alias,
2706 property_release_alias,
2707 prop);
2708 op->resolve = property_resolve_alias;
2709 if (target_prop->defval) {
2710 op->defval = qobject_ref(target_prop->defval);
2711 }
2712
2713 object_property_set_description(obj, op->name,
2714 target_prop->description);
2715 return op;
2716 }
2717
2718 void object_property_set_description(Object *obj, const char *name,
2719 const char *description)
2720 {
2721 ObjectProperty *op;
2722
2723 op = object_property_find(obj, name, &error_abort);
2724 g_free(op->description);
2725 op->description = g_strdup(description);
2726 }
2727
2728 void object_class_property_set_description(ObjectClass *klass,
2729 const char *name,
2730 const char *description)
2731 {
2732 ObjectProperty *op;
2733
2734 op = g_hash_table_lookup(klass->properties, name);
2735 g_free(op->description);
2736 op->description = g_strdup(description);
2737 }
2738
2739 static void object_class_init(ObjectClass *klass, void *data)
2740 {
2741 object_class_property_add_str(klass, "type", object_get_type,
2742 NULL);
2743 }
2744
2745 static void register_types(void)
2746 {
2747 static TypeInfo interface_info = {
2748 .name = TYPE_INTERFACE,
2749 .class_size = sizeof(InterfaceClass),
2750 .abstract = true,
2751 };
2752
2753 static TypeInfo object_info = {
2754 .name = TYPE_OBJECT,
2755 .instance_size = sizeof(Object),
2756 .class_init = object_class_init,
2757 .abstract = true,
2758 };
2759
2760 type_interface = type_register_internal(&interface_info);
2761 type_register_internal(&object_info);
2762 }
2763
2764 type_init(register_types)