vcs.maemo.org Git - connman/blob - src/element.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2008  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <errno.h>
  27
  28 #include <glib.h>
  29 #include <gdbus.h>
  30
  31 #include "connman.h"
  32
  33 static DBusConnection *connection;
  34
  35 static GStaticRWLock driver_lock = G_STATIC_RW_LOCK_INIT;
  36 static GSList *driver_list = NULL;
  37 static GThreadPool *driver_thread;
  38
  39 static GStaticRWLock element_lock = G_STATIC_RW_LOCK_INIT;
  40 static GNode *element_root = NULL;
  41 static GThreadPool *element_thread;
  42
  43 static const char *type2string(enum connman_element_type type)
  44 {
  45         switch (type) {
  46         case CONNMAN_ELEMENT_TYPE_UNKNOWN:
  47                 return "unknown";
  48         case CONNMAN_ELEMENT_TYPE_ROOT:
  49                 return "root";
  50         case CONNMAN_ELEMENT_TYPE_DEVICE:
  51                 return "device";
  52         case CONNMAN_ELEMENT_TYPE_NETWORK:
  53                 return "network";
  54         case CONNMAN_ELEMENT_TYPE_IPV4:
  55                 return "ipv4";
  56         case CONNMAN_ELEMENT_TYPE_IPV6:
  57                 return "ipv6";
  58         case CONNMAN_ELEMENT_TYPE_DHCP:
  59                 return "dhcp";
  60         case CONNMAN_ELEMENT_TYPE_BOOTP:
  61                 return "bootp";
  62         case CONNMAN_ELEMENT_TYPE_ZEROCONF:
  63                 return "zeroconf";
  64         case CONNMAN_ELEMENT_TYPE_CONNECTION:
  65                 return "42";
  66         }
  67
  68         return NULL;
  69 }
  70
  71 static const char *subtype2string(enum connman_element_subtype type)
  72 {
  73         switch (type) {
  74         case CONNMAN_ELEMENT_SUBTYPE_UNKNOWN:
  75                 return "unknown";
  76         case CONNMAN_ELEMENT_SUBTYPE_ETHERNET:
  77                 return "ethernet";
  78         case CONNMAN_ELEMENT_SUBTYPE_WIFI:
  79                 return "wifi";
  80         case CONNMAN_ELEMENT_SUBTYPE_WIMAX:
  81                 return "wimax";
  82         case CONNMAN_ELEMENT_SUBTYPE_MODEM:
  83                 return "modem";
  84         case CONNMAN_ELEMENT_SUBTYPE_BLUETOOTH:
  85                 return "bluetooth";
  86         }
  87
  88         return NULL;
  89 }
  90
  91 static void append_entry(DBusMessageIter *dict,
  92                                 const char *key, int type, void *val)
  93 {
  94         DBusMessageIter entry, value;
  95         const char *signature;
  96
  97         dbus_message_iter_open_container(dict, DBUS_TYPE_DICT_ENTRY,
  98                                                                 NULL, &entry);
  99
 100         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &key);
 101
 102         switch (type) {
 103         case DBUS_TYPE_STRING:
 104                 signature = DBUS_TYPE_STRING_AS_STRING;
 105                 break;
 106         case DBUS_TYPE_UINT16:
 107                 signature = DBUS_TYPE_UINT16_AS_STRING;
 108                 break;
 109         case DBUS_TYPE_UINT32:
 110                 signature = DBUS_TYPE_UINT32_AS_STRING;
 111                 break;
 112         case DBUS_TYPE_OBJECT_PATH:
 113                 signature = DBUS_TYPE_OBJECT_PATH_AS_STRING;
 114                 break;
 115         default:
 116                 signature = DBUS_TYPE_VARIANT_AS_STRING;
 117                 break;
 118         }
 119
 120         dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT,
 121                                                         signature, &value);
 122         dbus_message_iter_append_basic(&value, type, val);
 123         dbus_message_iter_close_container(&entry, &value);
 124
 125         dbus_message_iter_close_container(dict, &entry);
 126 }
 127
 128 static void append_property(DBusMessageIter *dict,
 129                                 struct connman_property *property)
 130 {
 131         if (property->flags & CONNMAN_PROPERTY_FLAG_STATIC) {
 132                 append_entry(dict, property->name, property->type,
 133                                                         &property->value);
 134                 return;
 135         }
 136 }
 137
 138 static DBusMessage *get_properties(DBusConnection *conn,
 139                                         DBusMessage *msg, void *data)
 140 {
 141         struct connman_element *element = data;
 142         GSList *list;
 143         DBusMessage *reply;
 144         DBusMessageIter array, dict;
 145         const char *str;
 146
 147         DBG("conn %p", conn);
 148
 149         reply = dbus_message_new_method_return(msg);
 150         if (reply == NULL)
 151                 return NULL;
 152
 153         dbus_message_iter_init_append(reply, &array);
 154
 155         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
 156                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 157                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 158                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 159
 160         if (element->parent != NULL)
 161                 append_entry(&dict, "Parent",
 162                                 DBUS_TYPE_OBJECT_PATH, &element->parent->path);
 163
 164         str = type2string(element->type);
 165         if (str != NULL)
 166                 append_entry(&dict, "Type", DBUS_TYPE_STRING, &str);
 167         str = subtype2string(element->subtype);
 168         if (str != NULL)
 169                 append_entry(&dict, "Subtype", DBUS_TYPE_STRING, &str);
 170
 171         if (element->priority > 0)
 172                 append_entry(&dict, "Priority",
 173                                 DBUS_TYPE_UINT16, &element->priority);
 174
 175         if (element->ipv4.address != NULL)
 176                 append_entry(&dict, "IPv4.Address",
 177                                 DBUS_TYPE_STRING, &element->ipv4.address);
 178         if (element->ipv4.netmask != NULL)
 179                 append_entry(&dict, "IPv4.Netmask",
 180                                 DBUS_TYPE_STRING, &element->ipv4.netmask);
 181         if (element->ipv4.gateway != NULL)
 182                 append_entry(&dict, "IPv4.Gateway",
 183                                 DBUS_TYPE_STRING, &element->ipv4.gateway);
 184
 185         for (list = element->properties; list; list = list->next) {
 186                 struct connman_property *property = list->data;
 187
 188                 append_property(&dict, property);
 189         }
 190
 191         dbus_message_iter_close_container(&array, &dict);
 192
 193         return reply;
 194 }
 195
 196 static GDBusMethodTable element_methods[] = {
 197         { "GetProperties", "", "a{sv}", get_properties },
 198         { },
 199 };
 200
 201 struct append_filter {
 202         enum connman_element_type type;
 203         DBusMessageIter *iter;
 204 };
 205
 206 static gboolean append_path(GNode *node, gpointer data)
 207 {
 208         struct connman_element *element = node->data;
 209         struct append_filter *filter = data;
 210
 211         DBG("element %p name %s", element, element->name);
 212
 213         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 214                 return FALSE;
 215
 216         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 217                                         filter->type != element->type)
 218                 return FALSE;
 219
 220         dbus_message_iter_append_basic(filter->iter,
 221                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 222
 223         return FALSE;
 224 }
 225
 226 void __connman_element_list(enum connman_element_type type,
 227                                                 DBusMessageIter *iter)
 228 {
 229         struct append_filter filter = { type, iter };
 230
 231         DBG("");
 232
 233         g_static_rw_lock_reader_lock(&element_lock);
 234         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 235                                                         append_path, &filter);
 236         g_static_rw_lock_reader_unlock(&element_lock);
 237 }
 238
 239 static gint compare_priority(gconstpointer a, gconstpointer b)
 240 {
 241         const struct connman_driver *driver1 = a;
 242         const struct connman_driver *driver2 = b;
 243
 244         return driver2->priority - driver1->priority;
 245 }
 246
 247 int connman_driver_register(struct connman_driver *driver)
 248 {
 249         DBG("driver %p name %s", driver, driver->name);
 250
 251         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 252                 return -1;
 253
 254         if (!driver->probe)
 255                 return -EINVAL;
 256
 257         g_static_rw_lock_writer_lock(&driver_lock);
 258         driver_list = g_slist_insert_sorted(driver_list, driver,
 259                                                         compare_priority);
 260         g_static_rw_lock_writer_unlock(&driver_lock);
 261
 262         g_thread_pool_push(driver_thread, driver, NULL);
 263
 264         return 0;
 265 }
 266
 267 static gboolean remove_driver(GNode *node, gpointer data)
 268 {
 269         struct connman_element *element = node->data;
 270         struct connman_driver *driver = data;
 271
 272         DBG("element %p name %s", element, element->name);
 273
 274         if (element->driver == driver) {
 275                 if (driver->remove)
 276                         driver->remove(element);
 277                 element->driver = NULL;
 278         }
 279
 280         return FALSE;
 281 }
 282
 283 void connman_driver_unregister(struct connman_driver *driver)
 284 {
 285         DBG("driver %p name %s", driver, driver->name);
 286
 287         g_static_rw_lock_reader_lock(&element_lock);
 288         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
 289                                                         remove_driver, driver);
 290         g_static_rw_lock_reader_unlock(&element_lock);
 291
 292         g_static_rw_lock_writer_lock(&driver_lock);
 293         driver_list = g_slist_remove(driver_list, driver);
 294         g_static_rw_lock_writer_unlock(&driver_lock);
 295 }
 296
 297 struct connman_element *connman_element_create(void)
 298 {
 299         struct connman_element *element;
 300
 301         element = g_new0(struct connman_element, 1);
 302
 303         DBG("element %p", element);
 304
 305         element->refcount = 1;
 306
 307         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 308         element->subtype = CONNMAN_ELEMENT_SUBTYPE_UNKNOWN;
 309         element->state   = CONNMAN_ELEMENT_STATE_CLOSED;
 310
 311         element->netdev.index = -1;
 312
 313         return element;
 314 }
 315
 316 struct connman_element *connman_element_ref(struct connman_element *element)
 317 {
 318         DBG("element %p name %s refcount %d", element, element->name,
 319                                 g_atomic_int_get(&element->refcount) + 1);
 320
 321         g_atomic_int_inc(&element->refcount);
 322
 323         return element;
 324 }
 325
 326 void connman_element_unref(struct connman_element *element)
 327 {
 328         DBG("element %p name %s refcount %d", element, element->name,
 329                                 g_atomic_int_get(&element->refcount) - 1);
 330
 331         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 332                 GSList *list;
 333
 334                 for (list = element->properties; list; list = list->next) {
 335                         struct connman_property *property = list->data;
 336                         if ((property->flags & CONNMAN_PROPERTY_FLAG_STATIC) &&
 337                                         property->type == DBUS_TYPE_STRING)
 338                                 g_free(property->value);
 339                         g_free(property);
 340                         list->data = NULL;
 341                 }
 342                 g_slist_free(element->properties);
 343
 344                 g_free(element->ipv4.address);
 345                 g_free(element->ipv4.netmask);
 346                 g_free(element->ipv4.gateway);
 347                 g_free(element->ipv4.network);
 348                 g_free(element->ipv4.broadcast);
 349                 g_free(element->ipv4.nameserver);
 350                 g_free(element->netdev.name);
 351                 g_free(element->path);
 352                 g_free(element->name);
 353                 g_free(element);
 354         }
 355 }
 356
 357 int connman_element_add_static_property(struct connman_element *element,
 358                                 const char *name, int type, const void *value)
 359 {
 360         struct connman_property *property;
 361
 362         DBG("element %p name %s", element, element->name);
 363
 364         if (type != DBUS_TYPE_STRING)
 365                 return -EINVAL;
 366
 367         property = g_try_new0(struct connman_property, 1);
 368         if (property == NULL)
 369                 return -ENOMEM;
 370
 371         property->flags = CONNMAN_PROPERTY_FLAG_STATIC;
 372
 373         property->name = g_strdup(name);
 374         property->type = type;
 375
 376         DBG("name %s type %d value %p", name, type, value);
 377
 378         switch (type) {
 379         case DBUS_TYPE_STRING:
 380                 property->value = g_strdup(*((const char **) value));
 381                 break;
 382         }
 383
 384         element->properties = g_slist_append(element->properties, property);
 385
 386         return 0;
 387 }
 388
 389 int connman_element_set_property(struct connman_element *element,
 390                         enum connman_property_type type, const void *value)
 391 {
 392         switch (type) {
 393         case CONNMAN_PROPERTY_TYPE_INVALID:
 394                 return -EINVAL;
 395         case CONNMAN_PROPERTY_TYPE_IPV4_ADDRESS:
 396                 g_free(element->ipv4.address);
 397                 element->ipv4.address = g_strdup(*((const char **) value));
 398                 break;
 399         case CONNMAN_PROPERTY_TYPE_IPV4_NETMASK:
 400                 g_free(element->ipv4.netmask);
 401                 element->ipv4.netmask = g_strdup(*((const char **) value));
 402                 break;
 403         case CONNMAN_PROPERTY_TYPE_IPV4_GATEWAY:
 404                 g_free(element->ipv4.gateway);
 405                 element->ipv4.gateway = g_strdup(*((const char **) value));
 406                 break;
 407         }
 408
 409         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 410                                 CONNMAN_MANAGER_INTERFACE, "ElementUpdated",
 411                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 412                                                         DBUS_TYPE_INVALID);
 413
 414         return 0;
 415 }
 416
 417 int connman_element_get_value(struct connman_element *element,
 418                                 enum connman_property_type type, void *value)
 419 {
 420         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 421                 return -EINVAL;
 422
 423         switch (type) {
 424         case CONNMAN_PROPERTY_TYPE_INVALID:
 425                 return -EINVAL;
 426         case CONNMAN_PROPERTY_TYPE_IPV4_ADDRESS:
 427                 if (element->ipv4.address == NULL)
 428                         return connman_element_get_value(element->parent,
 429                                                                 type, value);
 430                 *((char **) value) = element->ipv4.address;
 431                 break;
 432         case CONNMAN_PROPERTY_TYPE_IPV4_NETMASK:
 433                 if (element->ipv4.netmask == NULL)
 434                         return connman_element_get_value(element->parent,
 435                                                                 type, value);
 436                 *((char **) value) = element->ipv4.netmask;
 437                 break;
 438         case CONNMAN_PROPERTY_TYPE_IPV4_GATEWAY:
 439                 if (element->ipv4.gateway == NULL)
 440                         return connman_element_get_value(element->parent,
 441                                                                 type, value);
 442                 *((char **) value) = element->ipv4.gateway;
 443                 break;
 444         }
 445
 446         return 0;
 447 }
 448
 449 int connman_element_register(struct connman_element *element,
 450                                         struct connman_element *parent)
 451 {
 452         GNode *node;
 453         const gchar *basepath;
 454
 455         DBG("element %p name %s parent %p", element, element->name, parent);
 456
 457         if (connman_element_ref(element) == NULL)
 458                 return -1;
 459
 460         __connman_element_load(element);
 461
 462         g_static_rw_lock_writer_lock(&element_lock);
 463
 464         if (parent) {
 465                 node = g_node_find(element_root, G_PRE_ORDER,
 466                                                 G_TRAVERSE_ALL, parent);
 467                 basepath = parent->path;
 468
 469                 if (element->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
 470                         element->subtype = parent->subtype;
 471         } else {
 472                 node = element_root;
 473                 basepath = "";
 474         }
 475
 476         if (element->name == NULL) {
 477                 switch (element->type) {
 478                 case CONNMAN_ELEMENT_TYPE_IPV4:
 479                         element->name = g_strdup("ipv4");
 480                         break;
 481                 case CONNMAN_ELEMENT_TYPE_IPV6:
 482                         element->name = g_strdup("ipv6");
 483                         break;
 484                 case CONNMAN_ELEMENT_TYPE_DHCP:
 485                         element->name = g_strdup("dhcp");
 486                         break;
 487                 case CONNMAN_ELEMENT_TYPE_BOOTP:
 488                         element->name = g_strdup("bootp");
 489                         break;
 490                 case CONNMAN_ELEMENT_TYPE_ZEROCONF:
 491                         element->name = g_strdup("zeroconf");
 492                         break;
 493                 default:
 494                         break;
 495                 }
 496         }
 497
 498         element->path = g_strdup_printf("%s/%s", basepath, element->name);
 499         element->parent = parent;
 500
 501         DBG("element %p path %s", element, element->path);
 502
 503         g_node_append_data(node, element);
 504
 505         g_static_rw_lock_writer_unlock(&element_lock);
 506
 507         __connman_element_store(element);
 508
 509         g_dbus_register_interface(connection, element->path,
 510                                         CONNMAN_ELEMENT_INTERFACE,
 511                                         element_methods, NULL, NULL,
 512                                                         element, NULL);
 513
 514         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 515                                 CONNMAN_MANAGER_INTERFACE, "ElementAdded",
 516                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 517                                                         DBUS_TYPE_INVALID);
 518
 519         if (element->type == CONNMAN_ELEMENT_TYPE_DEVICE)
 520                 g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 521                                 CONNMAN_MANAGER_INTERFACE, "DeviceAdded",
 522                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 523                                                         DBUS_TYPE_INVALID);
 524
 525         g_thread_pool_push(element_thread, element, NULL);
 526
 527         return 0;
 528 }
 529
 530 void connman_element_unregister(struct connman_element *element)
 531 {
 532         GNode *node;
 533
 534         DBG("element %p name %s", element, element->name);
 535
 536         if (element->type == CONNMAN_ELEMENT_TYPE_DEVICE)
 537                 g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 538                                 CONNMAN_MANAGER_INTERFACE, "DeviceRemoved",
 539                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 540                                                         DBUS_TYPE_INVALID);
 541
 542         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 543                                 CONNMAN_MANAGER_INTERFACE, "ElementRemoved",
 544                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 545                                                         DBUS_TYPE_INVALID);
 546
 547         g_dbus_unregister_interface(connection, element->path,
 548                                                 CONNMAN_ELEMENT_INTERFACE);
 549
 550         g_static_rw_lock_writer_lock(&element_lock);
 551
 552         if (element->driver) {
 553                 if (element->driver->remove)
 554                         element->driver->remove(element);
 555                 element->driver = NULL;
 556         }
 557
 558         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
 559         if (node != NULL) {
 560                 g_node_unlink(node);
 561                 g_node_destroy(node);
 562         }
 563
 564         g_static_rw_lock_writer_unlock(&element_lock);
 565
 566         connman_element_unref(element);
 567 }
 568
 569 void connman_element_update(struct connman_element *element)
 570 {
 571         DBG("element %p name %s", element, element->name);
 572
 573         g_static_rw_lock_reader_lock(&element_lock);
 574
 575         if (element->driver && element->driver->update)
 576                 element->driver->update(element);
 577
 578         g_static_rw_lock_reader_unlock(&element_lock);
 579
 580         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 581                                 CONNMAN_MANAGER_INTERFACE, "ElementUpdated",
 582                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 583                                                         DBUS_TYPE_INVALID);
 584 }
 585
 586 static inline void set_driver(struct connman_element *element,
 587                                                 struct connman_driver *driver)
 588 {
 589         g_static_rw_lock_reader_lock(&element_lock);
 590         element->driver = driver;
 591         g_static_rw_lock_reader_unlock(&element_lock);
 592 }
 593
 594 static gboolean match_driver(struct connman_element *element,
 595                                         struct connman_driver *driver)
 596 {
 597         if (element->type != driver->type &&
 598                         driver->type != CONNMAN_ELEMENT_TYPE_UNKNOWN)
 599                 return FALSE;
 600
 601         if (element->subtype == driver->subtype ||
 602                         driver->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
 603                 return TRUE;
 604
 605         return FALSE;
 606 }
 607
 608 static gboolean probe_driver(GNode *node, gpointer data)
 609 {
 610         struct connman_element *element = node->data;
 611         struct connman_driver *driver = data;
 612
 613         DBG("element %p name %s", element, element->name);
 614
 615         if (!element->driver && match_driver(element, driver) == TRUE) {
 616                 element->driver = driver;
 617
 618                 if (driver->probe(element) < 0)
 619                         element->driver = NULL;
 620         }
 621
 622         return FALSE;
 623 }
 624
 625 static void driver_probe(gpointer data, gpointer user_data)
 626 {
 627         struct connman_driver *driver = data;
 628
 629         DBG("driver %p name %s", driver, driver->name);
 630
 631         g_static_rw_lock_reader_lock(&element_lock);
 632         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 633                                                         probe_driver, driver);
 634         g_static_rw_lock_reader_unlock(&element_lock);
 635 }
 636
 637 static void element_probe(gpointer data, gpointer user_data)
 638 {
 639         struct connman_element *element = data;
 640         GSList *list;
 641
 642         DBG("element %p name %s", element, element->name);
 643
 644         if (connman_element_ref(element) == NULL)
 645                 return;
 646
 647         g_static_rw_lock_reader_lock(&driver_lock);
 648
 649         for (list = driver_list; list; list = list->next) {
 650                 struct connman_driver *driver = list->data;
 651
 652                 DBG("driver %p name %s", driver, driver->name);
 653
 654                 set_driver(element, driver);
 655
 656                 if (match_driver(element, driver) == TRUE &&
 657                                                 driver->probe(element) == 0)
 658                         break;
 659
 660                 set_driver(element, NULL);
 661         }
 662
 663         g_static_rw_lock_reader_unlock(&driver_lock);
 664
 665         connman_element_unref(element);
 666 }
 667
 668 int __connman_element_init(DBusConnection *conn)
 669 {
 670         struct connman_element *element;
 671
 672         DBG("conn %p", conn);
 673
 674         connection = dbus_connection_ref(conn);
 675         if (connection == NULL)
 676                 return -EIO;
 677
 678         g_static_rw_lock_writer_lock(&element_lock);
 679
 680         element = connman_element_create();
 681
 682         element->name = g_strdup("root");
 683         element->path = g_strdup("/");
 684         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
 685
 686         element_root = g_node_new(element);
 687
 688         g_static_rw_lock_writer_unlock(&element_lock);
 689
 690         element_thread = g_thread_pool_new(element_probe, NULL, 1, FALSE, NULL);
 691
 692         driver_thread = g_thread_pool_new(driver_probe, NULL, 1, FALSE, NULL);
 693
 694         return 0;
 695 }
 696
 697 static gboolean free_node(GNode *node, gpointer data)
 698 {
 699         struct connman_element *element = node->data;
 700
 701         DBG("element %p name %s", element, element->name);
 702
 703         g_dbus_unregister_interface(connection, element->path,
 704                                                 CONNMAN_ELEMENT_INTERFACE);
 705
 706         if (element->driver) {
 707                 if (element->driver->remove)
 708                         element->driver->remove(element);
 709                 element->driver = NULL;
 710         }
 711
 712         connman_element_unref(element);
 713
 714         node->data = NULL;
 715
 716         return FALSE;
 717 }
 718
 719 void __connman_element_cleanup(void)
 720 {
 721         DBG("");
 722
 723         g_thread_pool_free(driver_thread, TRUE, TRUE);
 724
 725         g_thread_pool_free(element_thread, TRUE, TRUE);
 726
 727         g_static_rw_lock_writer_lock(&element_lock);
 728
 729         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
 730                                                         free_node, NULL);
 731
 732         g_node_destroy(element_root);
 733         element_root = NULL;
 734
 735         g_static_rw_lock_writer_unlock(&element_lock);
 736
 737         dbus_connection_unref(connection);
 738 }