blob: 803b94bb66bad43bd9ae5459f74fb16270e8d5ab [file] [log] [blame]
Anthony Liguori2f28d2f2011-12-03 17:10:08 -06001/*
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
Paolo Bonzini14cccb62012-12-17 18:19:50 +010013#include "qom/object.h"
Anthony Liguori2f28d2f2011-12-03 17:10:08 -060014#include "qemu-common.h"
Paolo Bonzini7b1b5d12012-12-17 18:19:43 +010015#include "qapi/visitor.h"
Paolo Bonzinib2cd7de2012-02-09 09:52:59 +010016#include "qapi/string-input-visitor.h"
17#include "qapi/string-output-visitor.h"
Paolo Bonzini7b1b5d12012-12-17 18:19:43 +010018#include "qapi/qmp/qerror.h"
Paolo Bonzinifa131d92013-05-10 14:16:39 +020019#include "trace.h"
Anthony Liguori2f28d2f2011-12-03 17:10:08 -060020
Paolo Bonzini7b7b7d12012-02-01 17:16:22 +010021/* TODO: replace QObject with a simpler visitor to avoid a dependency
22 * of the QOM core on QObject? */
Paolo Bonzini14cccb62012-12-17 18:19:50 +010023#include "qom/qom-qobject.h"
Paolo Bonzini7b1b5d12012-12-17 18:19:43 +010024#include "qapi/qmp/qobject.h"
25#include "qapi/qmp/qbool.h"
26#include "qapi/qmp/qint.h"
27#include "qapi/qmp/qstring.h"
Paolo Bonzini7b7b7d12012-02-01 17:16:22 +010028
Anthony Liguori2f28d2f2011-12-03 17:10:08 -060029#define MAX_INTERFACES 32
30
31typedef struct InterfaceImpl InterfaceImpl;
32typedef struct TypeImpl TypeImpl;
33
34struct InterfaceImpl
35{
Anthony Liguori33e95c62012-08-10 13:16:10 +100036 const char *typename;
Anthony Liguori2f28d2f2011-12-03 17:10:08 -060037};
38
39struct TypeImpl
40{
41 const char *name;
42
43 size_t class_size;
44
45 size_t instance_size;
46
47 void (*class_init)(ObjectClass *klass, void *data);
Paolo Bonzini3b50e312012-05-02 13:30:55 +020048 void (*class_base_init)(ObjectClass *klass, void *data);
Anthony Liguori2f28d2f2011-12-03 17:10:08 -060049 void (*class_finalize)(ObjectClass *klass, void *data);
50
51 void *class_data;
52
53 void (*instance_init)(Object *obj);
54 void (*instance_finalize)(Object *obj);
55
56 bool abstract;
57
58 const char *parent;
59 TypeImpl *parent_type;
60
61 ObjectClass *class;
62
63 int num_interfaces;
64 InterfaceImpl interfaces[MAX_INTERFACES];
65};
66
Paolo Bonzini9970bd82012-02-03 11:51:39 +010067static Type type_interface;
68
Anthony Liguori2f28d2f2011-12-03 17:10:08 -060069static GHashTable *type_table_get(void)
70{
71 static GHashTable *type_table;
72
73 if (type_table == NULL) {
74 type_table = g_hash_table_new(g_str_hash, g_str_equal);
75 }
76
77 return type_table;
78}
79
80static void type_table_add(TypeImpl *ti)
81{
82 g_hash_table_insert(type_table_get(), (void *)ti->name, ti);
83}
84
85static TypeImpl *type_table_lookup(const char *name)
86{
87 return g_hash_table_lookup(type_table_get(), name);
88}
89
Paolo Bonzini049cb3c2012-04-04 15:58:40 +020090static TypeImpl *type_register_internal(const TypeInfo *info)
Anthony Liguori2f28d2f2011-12-03 17:10:08 -060091{
92 TypeImpl *ti = g_malloc0(sizeof(*ti));
Anthony Liguori33e95c62012-08-10 13:16:10 +100093 int i;
Anthony Liguori2f28d2f2011-12-03 17:10:08 -060094
95 g_assert(info->name != NULL);
96
Anthony Liguori73093352012-01-25 13:37:36 -060097 if (type_table_lookup(info->name) != NULL) {
98 fprintf(stderr, "Registering `%s' which already exists\n", info->name);
99 abort();
100 }
101
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600102 ti->name = g_strdup(info->name);
103 ti->parent = g_strdup(info->parent);
104
105 ti->class_size = info->class_size;
106 ti->instance_size = info->instance_size;
107
108 ti->class_init = info->class_init;
Paolo Bonzini3b50e312012-05-02 13:30:55 +0200109 ti->class_base_init = info->class_base_init;
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600110 ti->class_finalize = info->class_finalize;
111 ti->class_data = info->class_data;
112
113 ti->instance_init = info->instance_init;
114 ti->instance_finalize = info->instance_finalize;
115
116 ti->abstract = info->abstract;
117
Anthony Liguori33e95c62012-08-10 13:16:10 +1000118 for (i = 0; info->interfaces && info->interfaces[i].type; i++) {
119 ti->interfaces[i].typename = g_strdup(info->interfaces[i].type);
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600120 }
Anthony Liguori33e95c62012-08-10 13:16:10 +1000121 ti->num_interfaces = i;
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600122
123 type_table_add(ti);
124
125 return ti;
126}
127
Paolo Bonzini049cb3c2012-04-04 15:58:40 +0200128TypeImpl *type_register(const TypeInfo *info)
129{
130 assert(info->parent);
131 return type_register_internal(info);
132}
133
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600134TypeImpl *type_register_static(const TypeInfo *info)
135{
136 return type_register(info);
137}
138
139static TypeImpl *type_get_by_name(const char *name)
140{
141 if (name == NULL) {
142 return NULL;
143 }
144
145 return type_table_lookup(name);
146}
147
148static TypeImpl *type_get_parent(TypeImpl *type)
149{
150 if (!type->parent_type && type->parent) {
151 type->parent_type = type_get_by_name(type->parent);
152 g_assert(type->parent_type != NULL);
153 }
154
155 return type->parent_type;
156}
157
158static bool type_has_parent(TypeImpl *type)
159{
160 return (type->parent != NULL);
161}
162
163static size_t type_class_get_size(TypeImpl *ti)
164{
165 if (ti->class_size) {
166 return ti->class_size;
167 }
168
169 if (type_has_parent(ti)) {
170 return type_class_get_size(type_get_parent(ti));
171 }
172
173 return sizeof(ObjectClass);
174}
175
Igor Mitsyankoaca59af2012-02-28 15:57:10 +0400176static size_t type_object_get_size(TypeImpl *ti)
177{
178 if (ti->instance_size) {
179 return ti->instance_size;
180 }
181
182 if (type_has_parent(ti)) {
183 return type_object_get_size(type_get_parent(ti));
184 }
185
186 return 0;
187}
188
Anthony Liguori33e95c62012-08-10 13:16:10 +1000189static bool type_is_ancestor(TypeImpl *type, TypeImpl *target_type)
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600190{
Anthony Liguori33e95c62012-08-10 13:16:10 +1000191 assert(target_type);
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600192
Anthony Liguori33e95c62012-08-10 13:16:10 +1000193 /* Check if typename is a direct ancestor of type */
194 while (type) {
195 if (type == target_type) {
196 return true;
197 }
198
199 type = type_get_parent(type);
200 }
201
202 return false;
203}
204
205static void type_initialize(TypeImpl *ti);
206
207static void type_initialize_interface(TypeImpl *ti, const char *parent)
208{
209 InterfaceClass *new_iface;
210 TypeInfo info = { };
211 TypeImpl *iface_impl;
212
213 info.parent = parent;
214 info.name = g_strdup_printf("%s::%s", ti->name, info.parent);
215 info.abstract = true;
216
217 iface_impl = type_register(&info);
218 type_initialize(iface_impl);
219 g_free((char *)info.name);
220
221 new_iface = (InterfaceClass *)iface_impl->class;
222 new_iface->concrete_class = ti->class;
223
224 ti->class->interfaces = g_slist_append(ti->class->interfaces,
225 iface_impl->class);
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600226}
227
Igor Mitsyankoac451032012-02-28 15:57:11 +0400228static void type_initialize(TypeImpl *ti)
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600229{
Paolo Bonzini745549c2012-03-31 16:45:54 +0200230 TypeImpl *parent;
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600231
232 if (ti->class) {
233 return;
234 }
235
236 ti->class_size = type_class_get_size(ti);
Igor Mitsyankoaca59af2012-02-28 15:57:10 +0400237 ti->instance_size = type_object_get_size(ti);
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600238
239 ti->class = g_malloc0(ti->class_size);
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600240
Paolo Bonzini745549c2012-03-31 16:45:54 +0200241 parent = type_get_parent(ti);
242 if (parent) {
Igor Mitsyankoac451032012-02-28 15:57:11 +0400243 type_initialize(parent);
Anthony Liguori33e95c62012-08-10 13:16:10 +1000244 GSList *e;
245 int i;
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600246
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600247 g_assert(parent->class_size <= ti->class_size);
Paolo Bonzini745549c2012-03-31 16:45:54 +0200248 memcpy(ti->class, parent->class, parent->class_size);
Peter Crosthwaite3e407de2013-02-19 14:02:09 +1000249 ti->class->interfaces = NULL;
Anthony Liguori33e95c62012-08-10 13:16:10 +1000250
251 for (e = parent->class->interfaces; e; e = e->next) {
252 ObjectClass *iface = e->data;
253 type_initialize_interface(ti, object_class_get_name(iface));
254 }
255
256 for (i = 0; i < ti->num_interfaces; i++) {
257 TypeImpl *t = type_get_by_name(ti->interfaces[i].typename);
258 for (e = ti->class->interfaces; e; e = e->next) {
259 TypeImpl *target_type = OBJECT_CLASS(e->data)->type;
260
261 if (type_is_ancestor(target_type, t)) {
262 break;
263 }
264 }
265
266 if (e) {
267 continue;
268 }
269
270 type_initialize_interface(ti, ti->interfaces[i].typename);
271 }
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600272 }
273
Paolo Bonzini745549c2012-03-31 16:45:54 +0200274 ti->class->type = ti;
275
276 while (parent) {
277 if (parent->class_base_init) {
278 parent->class_base_init(ti->class, ti->class_data);
279 }
280 parent = type_get_parent(parent);
281 }
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600282
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600283 if (ti->class_init) {
284 ti->class_init(ti->class, ti->class_data);
285 }
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600286
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600287
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600288}
289
290static void object_init_with_type(Object *obj, TypeImpl *ti)
291{
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600292 if (type_has_parent(ti)) {
293 object_init_with_type(obj, type_get_parent(ti));
294 }
295
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600296 if (ti->instance_init) {
297 ti->instance_init(obj);
298 }
299}
300
301void object_initialize_with_type(void *data, TypeImpl *type)
302{
303 Object *obj = data;
304
305 g_assert(type != NULL);
Igor Mitsyankoac451032012-02-28 15:57:11 +0400306 type_initialize(type);
Igor Mitsyankoaca59af2012-02-28 15:57:10 +0400307
308 g_assert(type->instance_size >= sizeof(Object));
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600309 g_assert(type->abstract == false);
310
311 memset(obj, 0, type->instance_size);
312 obj->class = type->class;
Paolo Bonzini764b6312012-11-23 09:47:12 +0100313 object_ref(obj);
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600314 QTAILQ_INIT(&obj->properties);
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600315 object_init_with_type(obj, type);
316}
317
318void object_initialize(void *data, const char *typename)
319{
320 TypeImpl *type = type_get_by_name(typename);
321
322 object_initialize_with_type(data, type);
323}
324
Andreas Färber5d9d3f42012-05-27 00:32:40 +0200325static inline bool object_property_is_child(ObjectProperty *prop)
326{
327 return strstart(prop->type, "child<", NULL);
328}
329
330static inline bool object_property_is_link(ObjectProperty *prop)
331{
332 return strstart(prop->type, "link<", NULL);
333}
334
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600335static void object_property_del_all(Object *obj)
336{
337 while (!QTAILQ_EMPTY(&obj->properties)) {
338 ObjectProperty *prop = QTAILQ_FIRST(&obj->properties);
339
340 QTAILQ_REMOVE(&obj->properties, prop, node);
341
342 if (prop->release) {
343 prop->release(obj, prop->name, prop->opaque);
344 }
345
346 g_free(prop->name);
347 g_free(prop->type);
348 g_free(prop);
349 }
350}
351
352static void object_property_del_child(Object *obj, Object *child, Error **errp)
353{
354 ObjectProperty *prop;
355
356 QTAILQ_FOREACH(prop, &obj->properties, node) {
Andreas Färber5d9d3f42012-05-27 00:32:40 +0200357 if (object_property_is_child(prop) && prop->opaque == child) {
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600358 object_property_del(obj, prop->name, errp);
Paolo Bonzini6c1fdcf2012-02-28 09:54:15 +0100359 break;
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600360 }
361 }
362}
363
364void object_unparent(Object *obj)
365{
Paolo Bonzinie0a83fc2013-04-02 15:50:00 +0200366 if (!obj->parent) {
367 return;
368 }
369
Paolo Bonzini52e636c2013-01-25 14:12:30 +0100370 object_ref(obj);
Paolo Bonzini667d22d2012-11-23 09:47:13 +0100371 if (obj->class->unparent) {
372 (obj->class->unparent)(obj);
373 }
Michael S. Tsirkine998fa82013-03-18 21:01:37 +0200374 if (obj->parent) {
375 object_property_del_child(obj->parent, obj, NULL);
376 }
Paolo Bonzini52e636c2013-01-25 14:12:30 +0100377 object_unref(obj);
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600378}
379
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600380static void object_deinit(Object *obj, TypeImpl *type)
381{
382 if (type->instance_finalize) {
383 type->instance_finalize(obj);
384 }
385
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600386 if (type_has_parent(type)) {
387 object_deinit(obj, type_get_parent(type));
388 }
389}
390
Paolo Bonzini339c2702012-11-23 09:47:16 +0100391static void object_finalize(void *data)
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600392{
393 Object *obj = data;
394 TypeImpl *ti = obj->class->type;
395
396 object_deinit(obj, ti);
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600397 object_property_del_all(obj);
Anthony Liguoridb85b572011-12-23 08:47:39 -0600398
399 g_assert(obj->ref == 0);
Paolo Bonzinifde9bf42012-11-23 09:47:14 +0100400 if (obj->free) {
401 obj->free(obj);
402 }
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600403}
404
405Object *object_new_with_type(Type type)
406{
407 Object *obj;
408
409 g_assert(type != NULL);
Igor Mitsyankoac451032012-02-28 15:57:11 +0400410 type_initialize(type);
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600411
412 obj = g_malloc(type->instance_size);
413 object_initialize_with_type(obj, type);
Paolo Bonzinifde9bf42012-11-23 09:47:14 +0100414 obj->free = g_free;
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600415
416 return obj;
417}
418
419Object *object_new(const char *typename)
420{
421 TypeImpl *ti = type_get_by_name(typename);
422
423 return object_new_with_type(ti);
424}
425
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600426Object *object_dynamic_cast(Object *obj, const char *typename)
427{
Paolo Bonzinib7f43fe2012-11-23 16:56:17 +0100428 if (obj && object_class_dynamic_cast(object_get_class(obj), typename)) {
Paolo Bonziniacc4af32012-02-03 11:57:23 +0100429 return obj;
430 }
431
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600432 return NULL;
433}
434
Paolo Bonzinibe17f182013-05-10 14:16:38 +0200435Object *object_dynamic_cast_assert(Object *obj, const char *typename,
436 const char *file, int line, const char *func)
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600437{
Paolo Bonzinifa131d92013-05-10 14:16:39 +0200438 trace_object_dynamic_cast_assert(obj ? obj->class->type->name : "(null)",
439 typename, file, line, func);
440
Paolo Bonzini3556c232013-05-10 14:16:40 +0200441#ifdef CONFIG_QOM_CAST_DEBUG
Anthony Liguori03587322013-05-13 15:22:24 -0500442 int i;
443 Object *inst;
444
Peter Crosthwaite95916ab2013-05-22 11:19:16 +1000445 for (i = 0; obj && i < OBJECT_CLASS_CAST_CACHE; i++) {
Anthony Liguori03587322013-05-13 15:22:24 -0500446 if (obj->class->cast_cache[i] == typename) {
447 goto out;
448 }
449 }
450
451 inst = object_dynamic_cast(obj, typename);
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600452
Paolo Bonzinib7f43fe2012-11-23 16:56:17 +0100453 if (!inst && obj) {
Paolo Bonzinibe17f182013-05-10 14:16:38 +0200454 fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n",
455 file, line, func, obj, typename);
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600456 abort();
457 }
458
Paolo Bonzini3556c232013-05-10 14:16:40 +0200459 assert(obj == inst);
Anthony Liguori03587322013-05-13 15:22:24 -0500460
Peter Crosthwaite95916ab2013-05-22 11:19:16 +1000461 if (obj && obj == inst) {
Anthony Liguori03587322013-05-13 15:22:24 -0500462 for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) {
463 obj->class->cast_cache[i - 1] = obj->class->cast_cache[i];
464 }
465 obj->class->cast_cache[i - 1] = typename;
466 }
467
468out:
Paolo Bonzini3556c232013-05-10 14:16:40 +0200469#endif
470 return obj;
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600471}
472
473ObjectClass *object_class_dynamic_cast(ObjectClass *class,
474 const char *typename)
475{
Anthony Liguori33e95c62012-08-10 13:16:10 +1000476 ObjectClass *ret = NULL;
Paolo Bonzinibf0fda32013-05-10 14:16:36 +0200477 TypeImpl *target_type;
478 TypeImpl *type;
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600479
Paolo Bonzinibf0fda32013-05-10 14:16:36 +0200480 if (!class) {
481 return NULL;
482 }
483
Paolo Bonzini793c96b2013-05-10 14:16:37 +0200484 /* A simple fast path that can trigger a lot for leaf classes. */
Paolo Bonzinibf0fda32013-05-10 14:16:36 +0200485 type = class->type;
Paolo Bonzini793c96b2013-05-10 14:16:37 +0200486 if (type->name == typename) {
487 return class;
488 }
489
Paolo Bonzinibf0fda32013-05-10 14:16:36 +0200490 target_type = type_get_by_name(typename);
Alexander Graf9ab880b2013-04-30 15:02:16 +0200491 if (!target_type) {
492 /* target class type unknown, so fail the cast */
493 return NULL;
494 }
495
Peter Crosthwaite00e2cea2013-02-19 14:02:10 +1000496 if (type->class->interfaces &&
497 type_is_ancestor(target_type, type_interface)) {
Anthony Liguori33e95c62012-08-10 13:16:10 +1000498 int found = 0;
499 GSList *i;
500
501 for (i = class->interfaces; i; i = i->next) {
502 ObjectClass *target_class = i->data;
503
504 if (type_is_ancestor(target_class->type, target_type)) {
505 ret = target_class;
506 found++;
507 }
508 }
509
510 /* The match was ambiguous, don't allow a cast */
511 if (found > 1) {
512 ret = NULL;
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600513 }
Anthony Liguori33e95c62012-08-10 13:16:10 +1000514 } else if (type_is_ancestor(type, target_type)) {
515 ret = class;
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600516 }
517
Anthony Liguori33e95c62012-08-10 13:16:10 +1000518 return ret;
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600519}
520
521ObjectClass *object_class_dynamic_cast_assert(ObjectClass *class,
Paolo Bonzinibe17f182013-05-10 14:16:38 +0200522 const char *typename,
523 const char *file, int line,
524 const char *func)
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600525{
Paolo Bonzinifa131d92013-05-10 14:16:39 +0200526 ObjectClass *ret;
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600527
Paolo Bonzinifa131d92013-05-10 14:16:39 +0200528 trace_object_class_dynamic_cast_assert(class ? class->type->name : "(null)",
529 typename, file, line, func);
530
Anthony Liguori03587322013-05-13 15:22:24 -0500531#ifdef CONFIG_QOM_CAST_DEBUG
532 int i;
533
534 for (i = 0; i < OBJECT_CLASS_CAST_CACHE; i++) {
535 if (class->cast_cache[i] == typename) {
536 ret = class;
537 goto out;
538 }
539 }
540#else
Paolo Bonzini3556c232013-05-10 14:16:40 +0200541 if (!class->interfaces) {
542 return class;
543 }
544#endif
545
Paolo Bonzinifa131d92013-05-10 14:16:39 +0200546 ret = object_class_dynamic_cast(class, typename);
Paolo Bonzinibf0fda32013-05-10 14:16:36 +0200547 if (!ret && class) {
Paolo Bonzinibe17f182013-05-10 14:16:38 +0200548 fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n",
549 file, line, func, class, typename);
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600550 abort();
551 }
552
Anthony Liguori03587322013-05-13 15:22:24 -0500553#ifdef CONFIG_QOM_CAST_DEBUG
554 if (ret == class) {
555 for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) {
556 class->cast_cache[i - 1] = class->cast_cache[i];
557 }
558 class->cast_cache[i - 1] = typename;
559 }
560out:
561#endif
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600562 return ret;
563}
564
565const char *object_get_typename(Object *obj)
566{
567 return obj->class->type->name;
568}
569
570ObjectClass *object_get_class(Object *obj)
571{
572 return obj->class;
573}
574
Andreas Färber17862372013-01-23 12:20:18 +0100575bool object_class_is_abstract(ObjectClass *klass)
576{
577 return klass->type->abstract;
578}
579
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600580const char *object_class_get_name(ObjectClass *klass)
581{
582 return klass->type->name;
583}
584
585ObjectClass *object_class_by_name(const char *typename)
586{
587 TypeImpl *type = type_get_by_name(typename);
588
589 if (!type) {
590 return NULL;
591 }
592
Igor Mitsyankoac451032012-02-28 15:57:11 +0400593 type_initialize(type);
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600594
595 return type->class;
596}
597
Paolo Bonzinie7cce672012-05-02 13:30:54 +0200598ObjectClass *object_class_get_parent(ObjectClass *class)
599{
600 TypeImpl *type = type_get_parent(class->type);
601
602 if (!type) {
603 return NULL;
604 }
605
606 type_initialize(type);
607
608 return type->class;
609}
610
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600611typedef struct OCFData
612{
613 void (*fn)(ObjectClass *klass, void *opaque);
Anthony Liguori93c511a2011-12-22 14:11:53 -0600614 const char *implements_type;
615 bool include_abstract;
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600616 void *opaque;
617} OCFData;
618
619static void object_class_foreach_tramp(gpointer key, gpointer value,
620 gpointer opaque)
621{
622 OCFData *data = opaque;
623 TypeImpl *type = value;
Anthony Liguori93c511a2011-12-22 14:11:53 -0600624 ObjectClass *k;
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600625
Igor Mitsyankoac451032012-02-28 15:57:11 +0400626 type_initialize(type);
Anthony Liguori93c511a2011-12-22 14:11:53 -0600627 k = type->class;
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600628
Anthony Liguori93c511a2011-12-22 14:11:53 -0600629 if (!data->include_abstract && type->abstract) {
630 return;
631 }
632
633 if (data->implements_type &&
634 !object_class_dynamic_cast(k, data->implements_type)) {
635 return;
636 }
637
638 data->fn(k, data->opaque);
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600639}
640
641void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque),
Anthony Liguori93c511a2011-12-22 14:11:53 -0600642 const char *implements_type, bool include_abstract,
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600643 void *opaque)
644{
Anthony Liguori93c511a2011-12-22 14:11:53 -0600645 OCFData data = { fn, implements_type, include_abstract, opaque };
Anthony Liguori2f28d2f2011-12-03 17:10:08 -0600646
647 g_hash_table_foreach(type_table_get(), object_class_foreach_tramp, &data);
648}
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600649
Paolo Bonzini32efc532012-04-11 23:30:20 +0200650int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque),
651 void *opaque)
652{
653 ObjectProperty *prop;
654 int ret = 0;
655
656 QTAILQ_FOREACH(prop, &obj->properties, node) {
657 if (object_property_is_child(prop)) {
658 ret = fn(prop->opaque, opaque);
659 if (ret != 0) {
660 break;
661 }
662 }
663 }
664 return ret;
665}
666
Andreas Färber418ba9e2012-02-25 23:07:34 +0100667static void object_class_get_list_tramp(ObjectClass *klass, void *opaque)
668{
669 GSList **list = opaque;
670
671 *list = g_slist_prepend(*list, klass);
672}
673
674GSList *object_class_get_list(const char *implements_type,
675 bool include_abstract)
676{
677 GSList *list = NULL;
678
679 object_class_foreach(object_class_get_list_tramp,
680 implements_type, include_abstract, &list);
681 return list;
682}
683
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600684void object_ref(Object *obj)
685{
686 obj->ref++;
687}
688
689void object_unref(Object *obj)
690{
691 g_assert(obj->ref > 0);
692 obj->ref--;
693
694 /* parent always holds a reference to its children */
695 if (obj->ref == 0) {
696 object_finalize(obj);
697 }
698}
699
700void object_property_add(Object *obj, const char *name, const char *type,
701 ObjectPropertyAccessor *get,
702 ObjectPropertyAccessor *set,
703 ObjectPropertyRelease *release,
704 void *opaque, Error **errp)
705{
Peter Maydell54852b02013-03-25 13:15:13 +0000706 ObjectProperty *prop;
707
708 QTAILQ_FOREACH(prop, &obj->properties, node) {
709 if (strcmp(prop->name, name) == 0) {
710 error_setg(errp, "attempt to add duplicate property '%s'"
711 " to object (type '%s')", name,
712 object_get_typename(obj));
713 return;
714 }
715 }
716
717 prop = g_malloc0(sizeof(*prop));
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600718
719 prop->name = g_strdup(name);
720 prop->type = g_strdup(type);
721
722 prop->get = get;
723 prop->set = set;
724 prop->release = release;
725 prop->opaque = opaque;
726
727 QTAILQ_INSERT_TAIL(&obj->properties, prop, node);
728}
729
Paolo Bonzini89bfe002012-04-12 18:00:18 +0200730ObjectProperty *object_property_find(Object *obj, const char *name,
731 Error **errp)
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600732{
733 ObjectProperty *prop;
734
735 QTAILQ_FOREACH(prop, &obj->properties, node) {
736 if (strcmp(prop->name, name) == 0) {
737 return prop;
738 }
739 }
740
Paolo Bonzini89bfe002012-04-12 18:00:18 +0200741 error_set(errp, QERR_PROPERTY_NOT_FOUND, "", name);
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600742 return NULL;
743}
744
745void object_property_del(Object *obj, const char *name, Error **errp)
746{
Paolo Bonzini89bfe002012-04-12 18:00:18 +0200747 ObjectProperty *prop = object_property_find(obj, name, errp);
Anthony Liguori0866aca2011-12-23 15:34:39 -0600748 if (prop == NULL) {
Anthony Liguori0866aca2011-12-23 15:34:39 -0600749 return;
750 }
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600751
Anthony Liguori0866aca2011-12-23 15:34:39 -0600752 if (prop->release) {
753 prop->release(obj, name, prop->opaque);
754 }
755
756 QTAILQ_REMOVE(&obj->properties, prop, node);
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600757
758 g_free(prop->name);
759 g_free(prop->type);
760 g_free(prop);
761}
762
763void object_property_get(Object *obj, Visitor *v, const char *name,
764 Error **errp)
765{
Paolo Bonzini89bfe002012-04-12 18:00:18 +0200766 ObjectProperty *prop = object_property_find(obj, name, errp);
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600767 if (prop == NULL) {
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600768 return;
769 }
770
771 if (!prop->get) {
772 error_set(errp, QERR_PERMISSION_DENIED);
773 } else {
774 prop->get(obj, v, prop->opaque, name, errp);
775 }
776}
777
778void object_property_set(Object *obj, Visitor *v, const char *name,
779 Error **errp)
780{
Paolo Bonzini89bfe002012-04-12 18:00:18 +0200781 ObjectProperty *prop = object_property_find(obj, name, errp);
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600782 if (prop == NULL) {
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600783 return;
784 }
785
786 if (!prop->set) {
787 error_set(errp, QERR_PERMISSION_DENIED);
788 } else {
789 prop->set(obj, v, prop->opaque, name, errp);
790 }
791}
792
Paolo Bonzini7b7b7d12012-02-01 17:16:22 +0100793void object_property_set_str(Object *obj, const char *value,
794 const char *name, Error **errp)
795{
796 QString *qstr = qstring_from_str(value);
797 object_property_set_qobject(obj, QOBJECT(qstr), name, errp);
798
799 QDECREF(qstr);
800}
801
802char *object_property_get_str(Object *obj, const char *name,
803 Error **errp)
804{
805 QObject *ret = object_property_get_qobject(obj, name, errp);
806 QString *qstring;
807 char *retval;
808
809 if (!ret) {
810 return NULL;
811 }
812 qstring = qobject_to_qstring(ret);
813 if (!qstring) {
814 error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, "string");
815 retval = NULL;
816 } else {
817 retval = g_strdup(qstring_get_str(qstring));
818 }
819
820 QDECREF(qstring);
821 return retval;
822}
823
Paolo Bonzini1d9c5a12012-02-02 10:51:57 +0100824void object_property_set_link(Object *obj, Object *value,
825 const char *name, Error **errp)
826{
827 object_property_set_str(obj, object_get_canonical_path(value),
828 name, errp);
829}
830
831Object *object_property_get_link(Object *obj, const char *name,
832 Error **errp)
833{
834 char *str = object_property_get_str(obj, name, errp);
835 Object *target = NULL;
836
837 if (str && *str) {
838 target = object_resolve_path(str, NULL);
839 if (!target) {
840 error_set(errp, QERR_DEVICE_NOT_FOUND, str);
841 }
842 }
843
844 g_free(str);
845 return target;
846}
847
Paolo Bonzini7b7b7d12012-02-01 17:16:22 +0100848void object_property_set_bool(Object *obj, bool value,
849 const char *name, Error **errp)
850{
851 QBool *qbool = qbool_from_int(value);
852 object_property_set_qobject(obj, QOBJECT(qbool), name, errp);
853
854 QDECREF(qbool);
855}
856
857bool object_property_get_bool(Object *obj, const char *name,
858 Error **errp)
859{
860 QObject *ret = object_property_get_qobject(obj, name, errp);
861 QBool *qbool;
862 bool retval;
863
864 if (!ret) {
865 return false;
866 }
867 qbool = qobject_to_qbool(ret);
868 if (!qbool) {
869 error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, "boolean");
870 retval = false;
871 } else {
872 retval = qbool_get_int(qbool);
873 }
874
875 QDECREF(qbool);
876 return retval;
877}
878
879void object_property_set_int(Object *obj, int64_t value,
880 const char *name, Error **errp)
881{
882 QInt *qint = qint_from_int(value);
883 object_property_set_qobject(obj, QOBJECT(qint), name, errp);
884
885 QDECREF(qint);
886}
887
888int64_t object_property_get_int(Object *obj, const char *name,
889 Error **errp)
890{
891 QObject *ret = object_property_get_qobject(obj, name, errp);
892 QInt *qint;
893 int64_t retval;
894
895 if (!ret) {
896 return -1;
897 }
898 qint = qobject_to_qint(ret);
899 if (!qint) {
900 error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, "int");
901 retval = -1;
902 } else {
903 retval = qint_get_int(qint);
904 }
905
906 QDECREF(qint);
907 return retval;
908}
909
Paolo Bonzinib2cd7de2012-02-09 09:52:59 +0100910void object_property_parse(Object *obj, const char *string,
911 const char *name, Error **errp)
912{
913 StringInputVisitor *mi;
914 mi = string_input_visitor_new(string);
915 object_property_set(obj, string_input_get_visitor(mi), name, errp);
916
917 string_input_visitor_cleanup(mi);
918}
919
920char *object_property_print(Object *obj, const char *name,
921 Error **errp)
922{
923 StringOutputVisitor *mo;
924 char *string;
925
926 mo = string_output_visitor_new();
Paolo Bonzini8185bfc2012-05-02 13:31:00 +0200927 object_property_get(obj, string_output_get_visitor(mo), name, errp);
Paolo Bonzinib2cd7de2012-02-09 09:52:59 +0100928 string = string_output_get_string(mo);
929 string_output_visitor_cleanup(mo);
930 return string;
931}
932
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600933const char *object_property_get_type(Object *obj, const char *name, Error **errp)
934{
Paolo Bonzini89bfe002012-04-12 18:00:18 +0200935 ObjectProperty *prop = object_property_find(obj, name, errp);
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600936 if (prop == NULL) {
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600937 return NULL;
938 }
939
940 return prop->type;
941}
942
943Object *object_get_root(void)
944{
Anthony Liguori8b45d442011-12-23 09:08:05 -0600945 static Object *root;
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600946
Anthony Liguori8b45d442011-12-23 09:08:05 -0600947 if (!root) {
948 root = object_new("container");
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600949 }
950
Anthony Liguori8b45d442011-12-23 09:08:05 -0600951 return root;
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600952}
953
954static void object_get_child_property(Object *obj, Visitor *v, void *opaque,
955 const char *name, Error **errp)
956{
957 Object *child = opaque;
958 gchar *path;
959
960 path = object_get_canonical_path(child);
961 visit_type_str(v, &path, name, errp);
962 g_free(path);
963}
964
Anthony Liguoridb85b572011-12-23 08:47:39 -0600965static void object_finalize_child_property(Object *obj, const char *name,
966 void *opaque)
967{
968 Object *child = opaque;
969
970 object_unref(child);
971}
972
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600973void object_property_add_child(Object *obj, const char *name,
974 Object *child, Error **errp)
975{
976 gchar *type;
977
978 type = g_strdup_printf("child<%s>", object_get_typename(OBJECT(child)));
979
980 object_property_add(obj, name, type, object_get_child_property,
Anthony Liguoridb85b572011-12-23 08:47:39 -0600981 NULL, object_finalize_child_property, child, errp);
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600982
983 object_ref(child);
984 g_assert(child->parent == NULL);
985 child->parent = obj;
986
987 g_free(type);
988}
989
990static void object_get_link_property(Object *obj, Visitor *v, void *opaque,
991 const char *name, Error **errp)
992{
993 Object **child = opaque;
994 gchar *path;
995
996 if (*child) {
997 path = object_get_canonical_path(*child);
998 visit_type_str(v, &path, name, errp);
999 g_free(path);
1000 } else {
1001 path = (gchar *)"";
1002 visit_type_str(v, &path, name, errp);
1003 }
1004}
1005
1006static void object_set_link_property(Object *obj, Visitor *v, void *opaque,
1007 const char *name, Error **errp)
1008{
1009 Object **child = opaque;
Alexander Barabashf0cdc962012-02-22 19:22:26 +02001010 Object *old_target;
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001011 bool ambiguous = false;
1012 const char *type;
1013 char *path;
Paolo Bonzini11e35bf2012-02-02 12:37:53 +01001014 gchar *target_type;
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001015
1016 type = object_property_get_type(obj, name, NULL);
1017
1018 visit_type_str(v, &path, name, errp);
1019
Alexander Barabashf0cdc962012-02-22 19:22:26 +02001020 old_target = *child;
1021 *child = NULL;
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001022
1023 if (strcmp(path, "") != 0) {
1024 Object *target;
1025
Paolo Bonzini11e35bf2012-02-02 12:37:53 +01001026 /* Go from link<FOO> to FOO. */
1027 target_type = g_strndup(&type[5], strlen(type) - 6);
1028 target = object_resolve_path_type(path, target_type, &ambiguous);
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001029
Paolo Bonzini11e35bf2012-02-02 12:37:53 +01001030 if (ambiguous) {
1031 error_set(errp, QERR_AMBIGUOUS_PATH, path);
1032 } else if (target) {
1033 object_ref(target);
1034 *child = target;
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001035 } else {
Paolo Bonzini11e35bf2012-02-02 12:37:53 +01001036 target = object_resolve_path(path, &ambiguous);
1037 if (target || ambiguous) {
1038 error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, target_type);
1039 } else {
1040 error_set(errp, QERR_DEVICE_NOT_FOUND, path);
1041 }
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001042 }
Paolo Bonzini11e35bf2012-02-02 12:37:53 +01001043 g_free(target_type);
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001044 }
1045
1046 g_free(path);
Alexander Barabashf0cdc962012-02-22 19:22:26 +02001047
1048 if (old_target != NULL) {
1049 object_unref(old_target);
1050 }
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001051}
1052
1053void object_property_add_link(Object *obj, const char *name,
1054 const char *type, Object **child,
1055 Error **errp)
1056{
1057 gchar *full_type;
1058
1059 full_type = g_strdup_printf("link<%s>", type);
1060
1061 object_property_add(obj, name, full_type,
1062 object_get_link_property,
1063 object_set_link_property,
1064 NULL, child, errp);
1065
1066 g_free(full_type);
1067}
1068
1069gchar *object_get_canonical_path(Object *obj)
1070{
1071 Object *root = object_get_root();
1072 char *newpath = NULL, *path = NULL;
1073
1074 while (obj != root) {
1075 ObjectProperty *prop = NULL;
1076
1077 g_assert(obj->parent != NULL);
1078
1079 QTAILQ_FOREACH(prop, &obj->parent->properties, node) {
Andreas Färber5d9d3f42012-05-27 00:32:40 +02001080 if (!object_property_is_child(prop)) {
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001081 continue;
1082 }
1083
1084 if (prop->opaque == obj) {
1085 if (path) {
1086 newpath = g_strdup_printf("%s/%s", prop->name, path);
1087 g_free(path);
1088 path = newpath;
1089 } else {
1090 path = g_strdup(prop->name);
1091 }
1092 break;
1093 }
1094 }
1095
1096 g_assert(prop != NULL);
1097
1098 obj = obj->parent;
1099 }
1100
1101 newpath = g_strdup_printf("/%s", path);
1102 g_free(path);
1103
1104 return newpath;
1105}
1106
Andreas Färber3e84b482013-01-15 02:55:10 +01001107Object *object_resolve_path_component(Object *parent, const gchar *part)
Paolo Bonzinia612b2a2012-03-27 18:38:45 +02001108{
Paolo Bonzini89bfe002012-04-12 18:00:18 +02001109 ObjectProperty *prop = object_property_find(parent, part, NULL);
Paolo Bonzinia612b2a2012-03-27 18:38:45 +02001110 if (prop == NULL) {
1111 return NULL;
1112 }
1113
Andreas Färber5d9d3f42012-05-27 00:32:40 +02001114 if (object_property_is_link(prop)) {
Paolo Bonzinia612b2a2012-03-27 18:38:45 +02001115 return *(Object **)prop->opaque;
Andreas Färber5d9d3f42012-05-27 00:32:40 +02001116 } else if (object_property_is_child(prop)) {
Paolo Bonzinia612b2a2012-03-27 18:38:45 +02001117 return prop->opaque;
1118 } else {
1119 return NULL;
1120 }
1121}
1122
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001123static Object *object_resolve_abs_path(Object *parent,
1124 gchar **parts,
Paolo Bonzini02fe2db2012-02-03 11:21:01 +01001125 const char *typename,
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001126 int index)
1127{
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001128 Object *child;
1129
1130 if (parts[index] == NULL) {
Paolo Bonzini02fe2db2012-02-03 11:21:01 +01001131 return object_dynamic_cast(parent, typename);
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001132 }
1133
1134 if (strcmp(parts[index], "") == 0) {
Paolo Bonzini02fe2db2012-02-03 11:21:01 +01001135 return object_resolve_abs_path(parent, parts, typename, index + 1);
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001136 }
1137
Paolo Bonzinia612b2a2012-03-27 18:38:45 +02001138 child = object_resolve_path_component(parent, parts[index]);
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001139 if (!child) {
1140 return NULL;
1141 }
1142
Paolo Bonzini02fe2db2012-02-03 11:21:01 +01001143 return object_resolve_abs_path(child, parts, typename, index + 1);
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001144}
1145
1146static Object *object_resolve_partial_path(Object *parent,
1147 gchar **parts,
Paolo Bonzini02fe2db2012-02-03 11:21:01 +01001148 const char *typename,
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001149 bool *ambiguous)
1150{
1151 Object *obj;
1152 ObjectProperty *prop;
1153
Paolo Bonzini02fe2db2012-02-03 11:21:01 +01001154 obj = object_resolve_abs_path(parent, parts, typename, 0);
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001155
1156 QTAILQ_FOREACH(prop, &parent->properties, node) {
1157 Object *found;
1158
Andreas Färber5d9d3f42012-05-27 00:32:40 +02001159 if (!object_property_is_child(prop)) {
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001160 continue;
1161 }
1162
Paolo Bonzini02fe2db2012-02-03 11:21:01 +01001163 found = object_resolve_partial_path(prop->opaque, parts,
1164 typename, ambiguous);
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001165 if (found) {
1166 if (obj) {
1167 if (ambiguous) {
1168 *ambiguous = true;
1169 }
1170 return NULL;
1171 }
1172 obj = found;
1173 }
1174
1175 if (ambiguous && *ambiguous) {
1176 return NULL;
1177 }
1178 }
1179
1180 return obj;
1181}
1182
Paolo Bonzini02fe2db2012-02-03 11:21:01 +01001183Object *object_resolve_path_type(const char *path, const char *typename,
1184 bool *ambiguous)
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001185{
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001186 Object *obj;
1187 gchar **parts;
1188
1189 parts = g_strsplit(path, "/", 0);
Paolo Bonzini2e1103f2013-04-18 18:44:02 +02001190 assert(parts);
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001191
Paolo Bonzini2e1103f2013-04-18 18:44:02 +02001192 if (parts[0] == NULL || strcmp(parts[0], "") != 0) {
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001193 if (ambiguous) {
1194 *ambiguous = false;
1195 }
Paolo Bonzini02fe2db2012-02-03 11:21:01 +01001196 obj = object_resolve_partial_path(object_get_root(), parts,
1197 typename, ambiguous);
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001198 } else {
Paolo Bonzini02fe2db2012-02-03 11:21:01 +01001199 obj = object_resolve_abs_path(object_get_root(), parts, typename, 1);
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001200 }
1201
1202 g_strfreev(parts);
1203
1204 return obj;
1205}
1206
Paolo Bonzini02fe2db2012-02-03 11:21:01 +01001207Object *object_resolve_path(const char *path, bool *ambiguous)
1208{
1209 return object_resolve_path_type(path, TYPE_OBJECT, ambiguous);
1210}
1211
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001212typedef struct StringProperty
1213{
1214 char *(*get)(Object *, Error **);
1215 void (*set)(Object *, const char *, Error **);
1216} StringProperty;
1217
Paolo Bonzini7b7b7d12012-02-01 17:16:22 +01001218static void property_get_str(Object *obj, Visitor *v, void *opaque,
1219 const char *name, Error **errp)
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001220{
1221 StringProperty *prop = opaque;
1222 char *value;
1223
1224 value = prop->get(obj, errp);
1225 if (value) {
1226 visit_type_str(v, &value, name, errp);
1227 g_free(value);
1228 }
1229}
1230
Paolo Bonzini7b7b7d12012-02-01 17:16:22 +01001231static void property_set_str(Object *obj, Visitor *v, void *opaque,
1232 const char *name, Error **errp)
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001233{
1234 StringProperty *prop = opaque;
1235 char *value;
1236 Error *local_err = NULL;
1237
1238 visit_type_str(v, &value, name, &local_err);
1239 if (local_err) {
1240 error_propagate(errp, local_err);
1241 return;
1242 }
1243
1244 prop->set(obj, value, errp);
1245 g_free(value);
1246}
1247
Paolo Bonzini7b7b7d12012-02-01 17:16:22 +01001248static void property_release_str(Object *obj, const char *name,
1249 void *opaque)
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001250{
1251 StringProperty *prop = opaque;
1252 g_free(prop);
1253}
1254
1255void object_property_add_str(Object *obj, const char *name,
1256 char *(*get)(Object *, Error **),
1257 void (*set)(Object *, const char *, Error **),
1258 Error **errp)
1259{
1260 StringProperty *prop = g_malloc0(sizeof(*prop));
1261
1262 prop->get = get;
1263 prop->set = set;
1264
1265 object_property_add(obj, name, "string",
Paolo Bonzini7b7b7d12012-02-01 17:16:22 +01001266 get ? property_get_str : NULL,
1267 set ? property_set_str : NULL,
1268 property_release_str,
Anthony Liguori57c9faf2012-01-30 08:55:55 -06001269 prop, errp);
1270}
Paolo Bonzini745549c2012-03-31 16:45:54 +02001271
Anthony Liguori0e558842012-06-25 10:32:46 -05001272typedef struct BoolProperty
1273{
1274 bool (*get)(Object *, Error **);
1275 void (*set)(Object *, bool, Error **);
1276} BoolProperty;
1277
1278static void property_get_bool(Object *obj, Visitor *v, void *opaque,
1279 const char *name, Error **errp)
1280{
1281 BoolProperty *prop = opaque;
1282 bool value;
1283
1284 value = prop->get(obj, errp);
1285 visit_type_bool(v, &value, name, errp);
1286}
1287
1288static void property_set_bool(Object *obj, Visitor *v, void *opaque,
1289 const char *name, Error **errp)
1290{
1291 BoolProperty *prop = opaque;
1292 bool value;
1293 Error *local_err = NULL;
1294
1295 visit_type_bool(v, &value, name, &local_err);
1296 if (local_err) {
1297 error_propagate(errp, local_err);
1298 return;
1299 }
1300
1301 prop->set(obj, value, errp);
1302}
1303
1304static void property_release_bool(Object *obj, const char *name,
1305 void *opaque)
1306{
1307 BoolProperty *prop = opaque;
1308 g_free(prop);
1309}
1310
1311void object_property_add_bool(Object *obj, const char *name,
1312 bool (*get)(Object *, Error **),
1313 void (*set)(Object *, bool, Error **),
1314 Error **errp)
1315{
1316 BoolProperty *prop = g_malloc0(sizeof(*prop));
1317
1318 prop->get = get;
1319 prop->set = set;
1320
1321 object_property_add(obj, name, "bool",
1322 get ? property_get_bool : NULL,
1323 set ? property_set_bool : NULL,
1324 property_release_bool,
1325 prop, errp);
1326}
1327
Paolo Bonzini2f262e02012-04-02 17:33:51 +02001328static char *qdev_get_type(Object *obj, Error **errp)
1329{
1330 return g_strdup(object_get_typename(obj));
1331}
1332
1333static void object_instance_init(Object *obj)
1334{
1335 object_property_add_str(obj, "type", qdev_get_type, NULL, NULL);
1336}
1337
Paolo Bonzini745549c2012-03-31 16:45:54 +02001338static void register_types(void)
1339{
1340 static TypeInfo interface_info = {
1341 .name = TYPE_INTERFACE,
Anthony Liguori33e95c62012-08-10 13:16:10 +10001342 .class_size = sizeof(InterfaceClass),
Paolo Bonzini745549c2012-03-31 16:45:54 +02001343 .abstract = true,
1344 };
1345
1346 static TypeInfo object_info = {
1347 .name = TYPE_OBJECT,
1348 .instance_size = sizeof(Object),
Paolo Bonzini2f262e02012-04-02 17:33:51 +02001349 .instance_init = object_instance_init,
Paolo Bonzini745549c2012-03-31 16:45:54 +02001350 .abstract = true,
1351 };
1352
Paolo Bonzini049cb3c2012-04-04 15:58:40 +02001353 type_interface = type_register_internal(&interface_info);
1354 type_register_internal(&object_info);
Paolo Bonzini745549c2012-03-31 16:45:54 +02001355}
1356
1357type_init(register_types)