qemu/tests/check-qom-proplist.c

   1 /*
   2  * Copyright (C) 2015 Red Hat, Inc.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library.  If not, see
  16  * <http://www.gnu.org/licenses/>.
  17  *
  18  * Author: Daniel P. Berrange <berrange@redhat.com>
  19  */
  20
  21 #include "qemu/osdep.h"
  22 #include <glib.h>
  23
  24 #include "qapi/error.h"
  25 #include "qom/object.h"
  26 #include "qemu/module.h"
  27
  28
  29 #define TYPE_DUMMY "qemu-dummy"
  30
  31 typedef struct DummyObject DummyObject;
  32 typedef struct DummyObjectClass DummyObjectClass;
  33
  34 #define DUMMY_OBJECT(obj)                               \
  35     OBJECT_CHECK(DummyObject, (obj), TYPE_DUMMY)
  36
  37 typedef enum DummyAnimal DummyAnimal;
  38
  39 enum DummyAnimal {
  40     DUMMY_FROG,
  41     DUMMY_ALLIGATOR,
  42     DUMMY_PLATYPUS,
  43
  44     DUMMY_LAST,
  45 };
  46
  47 static const char *const dummy_animal_map[DUMMY_LAST + 1] = {
  48     [DUMMY_FROG] = "frog",
  49     [DUMMY_ALLIGATOR] = "alligator",
  50     [DUMMY_PLATYPUS] = "platypus",
  51     [DUMMY_LAST] = NULL,
  52 };
  53
  54 struct DummyObject {
  55     Object parent_obj;
  56
  57     bool bv;
  58     DummyAnimal av;
  59     char *sv;
  60 };
  61
  62 struct DummyObjectClass {
  63     ObjectClass parent_class;
  64 };
  65
  66
  67 static void dummy_set_bv(Object *obj,
  68                          bool value,
  69                          Error **errp)
  70 {
  71     DummyObject *dobj = DUMMY_OBJECT(obj);
  72
  73     dobj->bv = value;
  74 }
  75
  76 static bool dummy_get_bv(Object *obj,
  77                          Error **errp)
  78 {
  79     DummyObject *dobj = DUMMY_OBJECT(obj);
  80
  81     return dobj->bv;
  82 }
  83
  84
  85 static void dummy_set_av(Object *obj,
  86                          int value,
  87                          Error **errp)
  88 {
  89     DummyObject *dobj = DUMMY_OBJECT(obj);
  90
  91     dobj->av = value;
  92 }
  93
  94 static int dummy_get_av(Object *obj,
  95                         Error **errp)
  96 {
  97     DummyObject *dobj = DUMMY_OBJECT(obj);
  98
  99     return dobj->av;
 100 }
 101
 102
 103 static void dummy_set_sv(Object *obj,
 104                          const char *value,
 105                          Error **errp)
 106 {
 107     DummyObject *dobj = DUMMY_OBJECT(obj);
 108
 109     g_free(dobj->sv);
 110     dobj->sv = g_strdup(value);
 111 }
 112
 113 static char *dummy_get_sv(Object *obj,
 114                           Error **errp)
 115 {
 116     DummyObject *dobj = DUMMY_OBJECT(obj);
 117
 118     return g_strdup(dobj->sv);
 119 }
 120
 121
 122 static void dummy_init(Object *obj)
 123 {
 124     object_property_add_bool(obj, "bv",
 125                              dummy_get_bv,
 126                              dummy_set_bv,
 127                              NULL);
 128 }
 129
 130
 131 static void dummy_class_init(ObjectClass *cls, void *data)
 132 {
 133     object_class_property_add_bool(cls, "bv",
 134                                    dummy_get_bv,
 135                                    dummy_set_bv,
 136                                    NULL);
 137     object_class_property_add_str(cls, "sv",
 138                                   dummy_get_sv,
 139                                   dummy_set_sv,
 140                                   NULL);
 141     object_class_property_add_enum(cls, "av",
 142                                    "DummyAnimal",
 143                                    dummy_animal_map,
 144                                    dummy_get_av,
 145                                    dummy_set_av,
 146                                    NULL);
 147 }
 148
 149
 150 static void dummy_finalize(Object *obj)
 151 {
 152     DummyObject *dobj = DUMMY_OBJECT(obj);
 153
 154     g_free(dobj->sv);
 155 }
 156
 157
 158 static const TypeInfo dummy_info = {
 159     .name          = TYPE_DUMMY,
 160     .parent        = TYPE_OBJECT,
 161     .instance_size = sizeof(DummyObject),
 162     .instance_init = dummy_init,
 163     .instance_finalize = dummy_finalize,
 164     .class_size = sizeof(DummyObjectClass),
 165     .class_init = dummy_class_init,
 166 };
 167
 168
 169 /*
 170  * The following 3 object classes are used to
 171  * simulate the kind of relationships seen in
 172  * qdev, which result in complex object
 173  * property destruction ordering.
 174  *
 175  * DummyDev has a 'bus' child to a DummyBus
 176  * DummyBus has a 'backend' child to a DummyBackend
 177  * DummyDev has a 'backend' link to DummyBackend
 178  *
 179  * When DummyDev is finalized, it unparents the
 180  * DummyBackend, which unparents the DummyDev
 181  * which deletes the 'backend' link from DummyDev
 182  * to DummyBackend. This illustrates that the
 183  * object_property_del_all() method needs to
 184  * cope with the list of properties being changed
 185  * while it iterates over them.
 186  */
 187 typedef struct DummyDev DummyDev;
 188 typedef struct DummyDevClass DummyDevClass;
 189 typedef struct DummyBus DummyBus;
 190 typedef struct DummyBusClass DummyBusClass;
 191 typedef struct DummyBackend DummyBackend;
 192 typedef struct DummyBackendClass DummyBackendClass;
 193
 194 #define TYPE_DUMMY_DEV "qemu-dummy-dev"
 195 #define TYPE_DUMMY_BUS "qemu-dummy-bus"
 196 #define TYPE_DUMMY_BACKEND "qemu-dummy-backend"
 197
 198 #define DUMMY_DEV(obj)                               \
 199     OBJECT_CHECK(DummyDev, (obj), TYPE_DUMMY_DEV)
 200 #define DUMMY_BUS(obj)                               \
 201     OBJECT_CHECK(DummyBus, (obj), TYPE_DUMMY_BUS)
 202 #define DUMMY_BACKEND(obj)                               \
 203     OBJECT_CHECK(DummyBackend, (obj), TYPE_DUMMY_BACKEND)
 204
 205 struct DummyDev {
 206     Object parent_obj;
 207
 208     DummyBus *bus;
 209 };
 210
 211 struct DummyDevClass {
 212     ObjectClass parent_class;
 213 };
 214
 215 struct DummyBus {
 216     Object parent_obj;
 217
 218     DummyBackend *backend;
 219 };
 220
 221 struct DummyBusClass {
 222     ObjectClass parent_class;
 223 };
 224
 225 struct DummyBackend {
 226     Object parent_obj;
 227 };
 228
 229 struct DummyBackendClass {
 230     ObjectClass parent_class;
 231 };
 232
 233
 234 static void dummy_dev_init(Object *obj)
 235 {
 236     DummyDev *dev = DUMMY_DEV(obj);
 237     DummyBus *bus = DUMMY_BUS(object_new(TYPE_DUMMY_BUS));
 238     DummyBackend *backend = DUMMY_BACKEND(object_new(TYPE_DUMMY_BACKEND));
 239
 240     object_property_add_child(obj, "bus", OBJECT(bus), NULL);
 241     dev->bus = bus;
 242     object_property_add_child(OBJECT(bus), "backend", OBJECT(backend), NULL);
 243     bus->backend = backend;
 244
 245     object_property_add_link(obj, "backend", TYPE_DUMMY_BACKEND,
 246                              (Object **)&bus->backend, NULL, 0, NULL);
 247 }
 248
 249 static void dummy_dev_unparent(Object *obj)
 250 {
 251     DummyDev *dev = DUMMY_DEV(obj);
 252     object_unparent(OBJECT(dev->bus));
 253 }
 254
 255 static void dummy_dev_class_init(ObjectClass *klass, void *opaque)
 256 {
 257     klass->unparent = dummy_dev_unparent;
 258 }
 259
 260
 261 static void dummy_bus_init(Object *obj)
 262 {
 263 }
 264
 265 static void dummy_bus_unparent(Object *obj)
 266 {
 267     DummyBus *bus = DUMMY_BUS(obj);
 268     object_property_del(obj->parent, "backend", NULL);
 269     object_unparent(OBJECT(bus->backend));
 270 }
 271
 272 static void dummy_bus_class_init(ObjectClass *klass, void *opaque)
 273 {
 274     klass->unparent = dummy_bus_unparent;
 275 }
 276
 277 static void dummy_backend_init(Object *obj)
 278 {
 279 }
 280
 281
 282 static const TypeInfo dummy_dev_info = {
 283     .name          = TYPE_DUMMY_DEV,
 284     .parent        = TYPE_OBJECT,
 285     .instance_size = sizeof(DummyDev),
 286     .instance_init = dummy_dev_init,
 287     .class_size = sizeof(DummyDevClass),
 288     .class_init = dummy_dev_class_init,
 289 };
 290
 291 static const TypeInfo dummy_bus_info = {
 292     .name          = TYPE_DUMMY_BUS,
 293     .parent        = TYPE_OBJECT,
 294     .instance_size = sizeof(DummyBus),
 295     .instance_init = dummy_bus_init,
 296     .class_size = sizeof(DummyBusClass),
 297     .class_init = dummy_bus_class_init,
 298 };
 299
 300 static const TypeInfo dummy_backend_info = {
 301     .name          = TYPE_DUMMY_BACKEND,
 302     .parent        = TYPE_OBJECT,
 303     .instance_size = sizeof(DummyBackend),
 304     .instance_init = dummy_backend_init,
 305     .class_size = sizeof(DummyBackendClass),
 306 };
 307
 308
 309
 310 static void test_dummy_createv(void)
 311 {
 312     Error *err = NULL;
 313     Object *parent = object_get_objects_root();
 314     DummyObject *dobj = DUMMY_OBJECT(
 315         object_new_with_props(TYPE_DUMMY,
 316                               parent,
 317                               "dummy0",
 318                               &err,
 319                               "bv", "yes",
 320                               "sv", "Hiss hiss hiss",
 321                               "av", "platypus",
 322                               NULL));
 323
 324     g_assert(err == NULL);
 325     g_assert_cmpstr(dobj->sv, ==, "Hiss hiss hiss");
 326     g_assert(dobj->bv == true);
 327     g_assert(dobj->av == DUMMY_PLATYPUS);
 328
 329     g_assert(object_resolve_path_component(parent, "dummy0")
 330              == OBJECT(dobj));
 331
 332     object_unparent(OBJECT(dobj));
 333 }
 334
 335
 336 static Object *new_helper(Error **errp,
 337                           Object *parent,
 338                           ...)
 339 {
 340     va_list vargs;
 341     Object *obj;
 342
 343     va_start(vargs, parent);
 344     obj = object_new_with_propv(TYPE_DUMMY,
 345                                 parent,
 346                                 "dummy0",
 347                                 errp,
 348                                 vargs);
 349     va_end(vargs);
 350     return obj;
 351 }
 352
 353 static void test_dummy_createlist(void)
 354 {
 355     Error *err = NULL;
 356     Object *parent = object_get_objects_root();
 357     DummyObject *dobj = DUMMY_OBJECT(
 358         new_helper(&err,
 359                    parent,
 360                    "bv", "yes",
 361                    "sv", "Hiss hiss hiss",
 362                    "av", "platypus",
 363                    NULL));
 364
 365     g_assert(err == NULL);
 366     g_assert_cmpstr(dobj->sv, ==, "Hiss hiss hiss");
 367     g_assert(dobj->bv == true);
 368     g_assert(dobj->av == DUMMY_PLATYPUS);
 369
 370     g_assert(object_resolve_path_component(parent, "dummy0")
 371              == OBJECT(dobj));
 372
 373     object_unparent(OBJECT(dobj));
 374 }
 375
 376 static void test_dummy_badenum(void)
 377 {
 378     Error *err = NULL;
 379     Object *parent = object_get_objects_root();
 380     Object *dobj =
 381         object_new_with_props(TYPE_DUMMY,
 382                               parent,
 383                               "dummy0",
 384                               &err,
 385                               "bv", "yes",
 386                               "sv", "Hiss hiss hiss",
 387                               "av", "yeti",
 388                               NULL);
 389
 390     g_assert(dobj == NULL);
 391     g_assert(err != NULL);
 392     g_assert_cmpstr(error_get_pretty(err), ==,
 393                     "Invalid parameter 'yeti'");
 394
 395     g_assert(object_resolve_path_component(parent, "dummy0")
 396              == NULL);
 397
 398     error_free(err);
 399 }
 400
 401
 402 static void test_dummy_getenum(void)
 403 {
 404     Error *err = NULL;
 405     int val;
 406     Object *parent = object_get_objects_root();
 407     DummyObject *dobj = DUMMY_OBJECT(
 408         object_new_with_props(TYPE_DUMMY,
 409                          parent,
 410                          "dummy0",
 411                          &err,
 412                          "av", "platypus",
 413                          NULL));
 414
 415     g_assert(err == NULL);
 416     g_assert(dobj->av == DUMMY_PLATYPUS);
 417
 418     val = object_property_get_enum(OBJECT(dobj),
 419                                    "av",
 420                                    "DummyAnimal",
 421                                    &err);
 422     g_assert(err == NULL);
 423     g_assert(val == DUMMY_PLATYPUS);
 424
 425     /* A bad enum type name */
 426     val = object_property_get_enum(OBJECT(dobj),
 427                                    "av",
 428                                    "BadAnimal",
 429                                    &err);
 430     g_assert(err != NULL);
 431     error_free(err);
 432     err = NULL;
 433
 434     /* A non-enum property name */
 435     val = object_property_get_enum(OBJECT(dobj),
 436                                    "iv",
 437                                    "DummyAnimal",
 438                                    &err);
 439     g_assert(err != NULL);
 440     error_free(err);
 441
 442     object_unparent(OBJECT(dobj));
 443 }
 444
 445
 446 static void test_dummy_iterator(void)
 447 {
 448     Object *parent = object_get_objects_root();
 449     DummyObject *dobj = DUMMY_OBJECT(
 450         object_new_with_props(TYPE_DUMMY,
 451                               parent,
 452                               "dummy0",
 453                               &error_abort,
 454                               "bv", "yes",
 455                               "sv", "Hiss hiss hiss",
 456                               "av", "platypus",
 457                               NULL));
 458
 459     ObjectProperty *prop;
 460     ObjectPropertyIterator iter;
 461     bool seenbv = false, seensv = false, seenav = false, seentype;
 462
 463     object_property_iter_init(&iter, OBJECT(dobj));
 464     while ((prop = object_property_iter_next(&iter))) {
 465         if (g_str_equal(prop->name, "bv")) {
 466             seenbv = true;
 467         } else if (g_str_equal(prop->name, "sv")) {
 468             seensv = true;
 469         } else if (g_str_equal(prop->name, "av")) {
 470             seenav = true;
 471         } else if (g_str_equal(prop->name, "type")) {
 472             /* This prop comes from the base Object class */
 473             seentype = true;
 474         } else {
 475             g_printerr("Found prop '%s'\n", prop->name);
 476             g_assert_not_reached();
 477         }
 478     }
 479     g_assert(seenbv);
 480     g_assert(seenav);
 481     g_assert(seensv);
 482     g_assert(seentype);
 483
 484     object_unparent(OBJECT(dobj));
 485 }
 486
 487
 488 static void test_dummy_delchild(void)
 489 {
 490     Object *parent = object_get_objects_root();
 491     DummyDev *dev = DUMMY_DEV(
 492         object_new_with_props(TYPE_DUMMY_DEV,
 493                               parent,
 494                               "dev0",
 495                               &error_abort,
 496                               NULL));
 497
 498     object_unparent(OBJECT(dev));
 499 }
 500
 501 int main(int argc, char **argv)
 502 {
 503     g_test_init(&argc, &argv, NULL);
 504
 505     module_call_init(MODULE_INIT_QOM);
 506     type_register_static(&dummy_info);
 507     type_register_static(&dummy_dev_info);
 508     type_register_static(&dummy_bus_info);
 509     type_register_static(&dummy_backend_info);
 510
 511     g_test_add_func("/qom/proplist/createlist", test_dummy_createlist);
 512     g_test_add_func("/qom/proplist/createv", test_dummy_createv);
 513     g_test_add_func("/qom/proplist/badenum", test_dummy_badenum);
 514     g_test_add_func("/qom/proplist/getenum", test_dummy_getenum);
 515     g_test_add_func("/qom/proplist/iterator", test_dummy_iterator);
 516     g_test_add_func("/qom/proplist/delchild", test_dummy_delchild);
 517
 518     return g_test_run();
 519 }