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 element_lock = G_STATIC_RW_LOCK_INIT;
  36 static GNode *element_root = NULL;
  37
  38 static GSList *driver_list = NULL;
  39
  40 static GThreadPool *thread_register;
  41 static GThreadPool *thread_unregister;
  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_RESOLVER:
  65                 return "resolver";
  66         case CONNMAN_ELEMENT_TYPE_CONNECTION:
  67                 return "42";
  68         }
  69
  70         return NULL;
  71 }
  72
  73 static const char *subtype2string(enum connman_element_subtype type)
  74 {
  75         switch (type) {
  76         case CONNMAN_ELEMENT_SUBTYPE_UNKNOWN:
  77                 return "unknown";
  78         case CONNMAN_ELEMENT_SUBTYPE_ETHERNET:
  79                 return "ethernet";
  80         case CONNMAN_ELEMENT_SUBTYPE_WIFI:
  81                 return "wifi";
  82         case CONNMAN_ELEMENT_SUBTYPE_WIMAX:
  83                 return "wimax";
  84         case CONNMAN_ELEMENT_SUBTYPE_MODEM:
  85                 return "modem";
  86         case CONNMAN_ELEMENT_SUBTYPE_BLUETOOTH:
  87                 return "bluetooth";
  88         }
  89
  90         return NULL;
  91 }
  92
  93 static void append_entry(DBusMessageIter *dict,
  94                                 const char *key, int type, void *val)
  95 {
  96         DBusMessageIter entry, value;
  97         const char *signature;
  98
  99         dbus_message_iter_open_container(dict, DBUS_TYPE_DICT_ENTRY,
 100                                                                 NULL, &entry);
 101
 102         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &key);
 103
 104         switch (type) {
 105         case DBUS_TYPE_STRING:
 106                 signature = DBUS_TYPE_STRING_AS_STRING;
 107                 break;
 108         case DBUS_TYPE_UINT16:
 109                 signature = DBUS_TYPE_UINT16_AS_STRING;
 110                 break;
 111         case DBUS_TYPE_UINT32:
 112                 signature = DBUS_TYPE_UINT32_AS_STRING;
 113                 break;
 114         case DBUS_TYPE_OBJECT_PATH:
 115                 signature = DBUS_TYPE_OBJECT_PATH_AS_STRING;
 116                 break;
 117         default:
 118                 signature = DBUS_TYPE_VARIANT_AS_STRING;
 119                 break;
 120         }
 121
 122         dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT,
 123                                                         signature, &value);
 124         dbus_message_iter_append_basic(&value, type, val);
 125         dbus_message_iter_close_container(&entry, &value);
 126
 127         dbus_message_iter_close_container(dict, &entry);
 128 }
 129
 130 static void append_property(DBusMessageIter *dict,
 131                                 struct connman_property *property)
 132 {
 133         if (property->flags & CONNMAN_PROPERTY_FLAG_STATIC) {
 134                 append_entry(dict, property->name, property->type,
 135                                                         &property->value);
 136                 return;
 137         }
 138 }
 139
 140 static DBusMessage *get_properties(DBusConnection *conn,
 141                                         DBusMessage *msg, void *data)
 142 {
 143         struct connman_element *element = data;
 144         GSList *list;
 145         DBusMessage *reply;
 146         DBusMessageIter array, dict;
 147         const char *str;
 148
 149         DBG("conn %p", conn);
 150
 151         reply = dbus_message_new_method_return(msg);
 152         if (reply == NULL)
 153                 return NULL;
 154
 155         dbus_message_iter_init_append(reply, &array);
 156
 157         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
 158                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 159                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 160                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 161
 162         if (element->parent != NULL)
 163                 append_entry(&dict, "Parent",
 164                                 DBUS_TYPE_OBJECT_PATH, &element->parent->path);
 165
 166         str = type2string(element->type);
 167         if (str != NULL)
 168                 append_entry(&dict, "Type", DBUS_TYPE_STRING, &str);
 169         str = subtype2string(element->subtype);
 170         if (str != NULL)
 171                 append_entry(&dict, "Subtype", DBUS_TYPE_STRING, &str);
 172
 173         if (element->priority > 0)
 174                 append_entry(&dict, "Priority",
 175                                 DBUS_TYPE_UINT16, &element->priority);
 176
 177         if (element->ipv4.address != NULL)
 178                 append_entry(&dict, "IPv4.Address",
 179                                 DBUS_TYPE_STRING, &element->ipv4.address);
 180         if (element->ipv4.netmask != NULL)
 181                 append_entry(&dict, "IPv4.Netmask",
 182                                 DBUS_TYPE_STRING, &element->ipv4.netmask);
 183         if (element->ipv4.gateway != NULL)
 184                 append_entry(&dict, "IPv4.Gateway",
 185                                 DBUS_TYPE_STRING, &element->ipv4.gateway);
 186
 187         for (list = element->properties; list; list = list->next) {
 188                 struct connman_property *property = list->data;
 189
 190                 append_property(&dict, property);
 191         }
 192
 193         dbus_message_iter_close_container(&array, &dict);
 194
 195         return reply;
 196 }
 197
 198 static GDBusMethodTable element_methods[] = {
 199         { "GetProperties", "", "a{sv}", get_properties },
 200         { },
 201 };
 202
 203 struct append_filter {
 204         enum connman_element_type type;
 205         DBusMessageIter *iter;
 206 };
 207
 208 static gboolean append_path(GNode *node, gpointer data)
 209 {
 210         struct connman_element *element = node->data;
 211         struct append_filter *filter = data;
 212
 213         DBG("element %p name %s", element, element->name);
 214
 215         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 216                 return FALSE;
 217
 218         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 219                                         filter->type != element->type)
 220                 return FALSE;
 221
 222         dbus_message_iter_append_basic(filter->iter,
 223                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 224
 225         return FALSE;
 226 }
 227
 228 void __connman_element_list(enum connman_element_type type,
 229                                                 DBusMessageIter *iter)
 230 {
 231         struct append_filter filter = { type, iter };
 232
 233         DBG("");
 234
 235         g_static_rw_lock_reader_lock(&element_lock);
 236         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 237                                                         append_path, &filter);
 238         g_static_rw_lock_reader_unlock(&element_lock);
 239 }
 240
 241 static gint compare_priority(gconstpointer a, gconstpointer b)
 242 {
 243         const struct connman_driver *driver1 = a;
 244         const struct connman_driver *driver2 = b;
 245
 246         return driver2->priority - driver1->priority;
 247 }
 248
 249 static gboolean match_driver(struct connman_element *element,
 250                                         struct connman_driver *driver)
 251 {
 252         if (element->type != driver->type &&
 253                         driver->type != CONNMAN_ELEMENT_TYPE_UNKNOWN)
 254                 return FALSE;
 255
 256         if (element->subtype == driver->subtype ||
 257                         driver->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
 258                 return TRUE;
 259
 260         return FALSE;
 261 }
 262
 263 static gboolean probe_driver(GNode *node, gpointer data)
 264 {
 265         struct connman_element *element = node->data;
 266         struct connman_driver *driver = data;
 267
 268         DBG("element %p name %s", element, element->name);
 269
 270         if (!element->driver && match_driver(element, driver) == TRUE) {
 271                 if (driver->probe(element) < 0)
 272                         return FALSE;
 273
 274                 connman_element_lock(element);
 275                 element->driver = driver;
 276                 connman_element_unlock(element);
 277         }
 278
 279         return FALSE;
 280 }
 281
 282 int connman_driver_register(struct connman_driver *driver)
 283 {
 284         DBG("driver %p name %s", driver, driver->name);
 285
 286         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 287                 return -EINVAL;
 288
 289         if (!driver->probe)
 290                 return -EINVAL;
 291
 292         g_static_rw_lock_writer_lock(&element_lock);
 293
 294         driver_list = g_slist_insert_sorted(driver_list, driver,
 295                                                         compare_priority);
 296
 297         if (element_root != NULL)
 298                 g_node_traverse(element_root, G_PRE_ORDER,
 299                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 300
 301         g_static_rw_lock_writer_unlock(&element_lock);
 302
 303         return 0;
 304 }
 305
 306 static gboolean remove_driver(GNode *node, gpointer data)
 307 {
 308         struct connman_element *element = node->data;
 309         struct connman_driver *driver = data;
 310
 311         DBG("element %p name %s", element, element->name);
 312
 313         if (element->driver == driver) {
 314                 if (driver->remove)
 315                         driver->remove(element);
 316
 317                 connman_element_lock(element);
 318                 element->driver = NULL;
 319                 connman_element_unlock(element);
 320         }
 321
 322         return FALSE;
 323 }
 324
 325 void connman_driver_unregister(struct connman_driver *driver)
 326 {
 327         DBG("driver %p name %s", driver, driver->name);
 328
 329         g_static_rw_lock_writer_lock(&element_lock);
 330
 331         driver_list = g_slist_remove(driver_list, driver);
 332
 333         if (element_root != NULL)
 334                 g_node_traverse(element_root, G_POST_ORDER,
 335                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 336
 337         g_static_rw_lock_writer_unlock(&element_lock);
 338 }
 339
 340 struct connman_element *connman_element_create(void)
 341 {
 342         struct connman_element *element;
 343
 344         element = g_new0(struct connman_element, 1);
 345
 346         DBG("element %p", element);
 347
 348         element->refcount = 1;
 349
 350         g_static_mutex_init(&element->mutex);
 351
 352         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 353         element->subtype = CONNMAN_ELEMENT_SUBTYPE_UNKNOWN;
 354         element->state   = CONNMAN_ELEMENT_STATE_CLOSED;
 355
 356         element->netdev.index = -1;
 357
 358         return element;
 359 }
 360
 361 struct connman_element *connman_element_ref(struct connman_element *element)
 362 {
 363         DBG("element %p name %s refcount %d", element, element->name,
 364                                 g_atomic_int_get(&element->refcount) + 1);
 365
 366         g_atomic_int_inc(&element->refcount);
 367
 368         return element;
 369 }
 370
 371 void connman_element_unref(struct connman_element *element)
 372 {
 373         DBG("element %p name %s refcount %d", element, element->name,
 374                                 g_atomic_int_get(&element->refcount) - 1);
 375
 376         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 377                 GSList *list;
 378
 379                 for (list = element->properties; list; list = list->next) {
 380                         struct connman_property *property = list->data;
 381                         if ((property->flags & CONNMAN_PROPERTY_FLAG_STATIC) &&
 382                                         property->type == DBUS_TYPE_STRING)
 383                                 g_free(property->value);
 384                         g_free(property);
 385                         list->data = NULL;
 386                 }
 387                 g_slist_free(element->properties);
 388
 389                 g_free(element->ipv4.address);
 390                 g_free(element->ipv4.netmask);
 391                 g_free(element->ipv4.gateway);
 392                 g_free(element->ipv4.network);
 393                 g_free(element->ipv4.broadcast);
 394                 g_free(element->ipv4.nameserver);
 395                 g_free(element->netdev.name);
 396                 g_free(element->path);
 397                 g_free(element->name);
 398                 g_free(element);
 399         }
 400 }
 401
 402 int connman_element_add_static_property(struct connman_element *element,
 403                                 const char *name, int type, const void *value)
 404 {
 405         struct connman_property *property;
 406
 407         DBG("element %p name %s", element, element->name);
 408
 409         if (type != DBUS_TYPE_STRING)
 410                 return -EINVAL;
 411
 412         property = g_try_new0(struct connman_property, 1);
 413         if (property == NULL)
 414                 return -ENOMEM;
 415
 416         property->flags = CONNMAN_PROPERTY_FLAG_STATIC;
 417
 418         property->name = g_strdup(name);
 419         property->type = type;
 420
 421         DBG("name %s type %d value %p", name, type, value);
 422
 423         switch (type) {
 424         case DBUS_TYPE_STRING:
 425                 property->value = g_strdup(*((const char **) value));
 426                 break;
 427         }
 428
 429         connman_element_lock(element);
 430         element->properties = g_slist_append(element->properties, property);
 431         connman_element_unlock(element);
 432
 433         return 0;
 434 }
 435
 436 int connman_element_set_property(struct connman_element *element,
 437                         enum connman_property_type type, const void *value)
 438 {
 439         switch (type) {
 440         case CONNMAN_PROPERTY_TYPE_INVALID:
 441                 return -EINVAL;
 442         case CONNMAN_PROPERTY_TYPE_IPV4_ADDRESS:
 443                 connman_element_lock(element);
 444                 g_free(element->ipv4.address);
 445                 element->ipv4.address = g_strdup(*((const char **) value));
 446                 connman_element_unlock(element);
 447                 break;
 448         case CONNMAN_PROPERTY_TYPE_IPV4_NETMASK:
 449                 connman_element_lock(element);
 450                 g_free(element->ipv4.netmask);
 451                 element->ipv4.netmask = g_strdup(*((const char **) value));
 452                 connman_element_unlock(element);
 453                 break;
 454         case CONNMAN_PROPERTY_TYPE_IPV4_GATEWAY:
 455                 connman_element_lock(element);
 456                 g_free(element->ipv4.gateway);
 457                 element->ipv4.gateway = g_strdup(*((const char **) value));
 458                 connman_element_unlock(element);
 459                 break;
 460         case CONNMAN_PROPERTY_TYPE_IPV4_NAMESERVER:
 461                 connman_element_lock(element);
 462                 g_free(element->ipv4.nameserver);
 463                 element->ipv4.nameserver = g_strdup(*((const char **) value));
 464                 connman_element_unlock(element);
 465                 break;
 466         }
 467
 468         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 469                                 CONNMAN_MANAGER_INTERFACE, "ElementUpdated",
 470                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 471                                                         DBUS_TYPE_INVALID);
 472
 473         return 0;
 474 }
 475
 476 int connman_element_get_value(struct connman_element *element,
 477                                 enum connman_property_type type, void *value)
 478 {
 479         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 480                 return -EINVAL;
 481
 482         switch (type) {
 483         case CONNMAN_PROPERTY_TYPE_INVALID:
 484                 return -EINVAL;
 485         case CONNMAN_PROPERTY_TYPE_IPV4_ADDRESS:
 486                 if (element->ipv4.address == NULL)
 487                         return connman_element_get_value(element->parent,
 488                                                                 type, value);
 489                 connman_element_lock(element);
 490                 *((char **) value) = element->ipv4.address;
 491                 connman_element_unlock(element);
 492                 break;
 493         case CONNMAN_PROPERTY_TYPE_IPV4_NETMASK:
 494                 if (element->ipv4.netmask == NULL)
 495                         return connman_element_get_value(element->parent,
 496                                                                 type, value);
 497                 connman_element_lock(element);
 498                 *((char **) value) = element->ipv4.netmask;
 499                 connman_element_unlock(element);
 500                 break;
 501         case CONNMAN_PROPERTY_TYPE_IPV4_GATEWAY:
 502                 if (element->ipv4.gateway == NULL)
 503                         return connman_element_get_value(element->parent,
 504                                                                 type, value);
 505                 connman_element_lock(element);
 506                 *((char **) value) = element->ipv4.gateway;
 507                 connman_element_unlock(element);
 508                 break;
 509         case CONNMAN_PROPERTY_TYPE_IPV4_NAMESERVER:
 510                 if (element->ipv4.nameserver == NULL)
 511                         return connman_element_get_value(element->parent,
 512                                                                 type, value);
 513                 connman_element_lock(element);
 514                 *((char **) value) = element->ipv4.nameserver;
 515                 connman_element_unlock(element);
 516                 break;
 517         }
 518
 519         return 0;
 520 }
 521
 522 int connman_element_register(struct connman_element *element,
 523                                         struct connman_element *parent)
 524 {
 525         DBG("element %p name %s parent %p", element, element->name, parent);
 526
 527         if (connman_element_ref(element) == NULL)
 528                 return -EINVAL;
 529
 530         connman_element_lock(element);
 531
 532         __connman_element_load(element);
 533
 534         if (element->name == NULL) {
 535                 switch (element->type) {
 536                 case CONNMAN_ELEMENT_TYPE_IPV4:
 537                         element->name = g_strdup("ipv4");
 538                         break;
 539                 case CONNMAN_ELEMENT_TYPE_IPV6:
 540                         element->name = g_strdup("ipv6");
 541                         break;
 542                 case CONNMAN_ELEMENT_TYPE_DHCP:
 543                         element->name = g_strdup("dhcp");
 544                         break;
 545                 case CONNMAN_ELEMENT_TYPE_BOOTP:
 546                         element->name = g_strdup("bootp");
 547                         break;
 548                 case CONNMAN_ELEMENT_TYPE_ZEROCONF:
 549                         element->name = g_strdup("zeroconf");
 550                         break;
 551                 case CONNMAN_ELEMENT_TYPE_RESOLVER:
 552                         element->name = g_strdup("resolver");
 553                         break;
 554                 default:
 555                         break;
 556                 }
 557         }
 558
 559         element->parent = parent;
 560
 561         connman_element_unlock(element);
 562
 563         g_thread_pool_push(thread_register, element, NULL);
 564
 565         return 0;
 566 }
 567
 568 void connman_element_unregister(struct connman_element *element)
 569 {
 570         DBG("element %p name %s", element, element->name);
 571
 572         g_thread_pool_push(thread_unregister, element, NULL);
 573 }
 574
 575 void connman_element_update(struct connman_element *element)
 576 {
 577         DBG("element %p name %s", element, element->name);
 578
 579         g_static_rw_lock_reader_lock(&element_lock);
 580
 581         if (element->driver && element->driver->update)
 582                 element->driver->update(element);
 583
 584         g_static_rw_lock_reader_unlock(&element_lock);
 585
 586         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 587                                 CONNMAN_MANAGER_INTERFACE, "ElementUpdated",
 588                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 589                                                         DBUS_TYPE_INVALID);
 590 }
 591
 592 static void register_element(gpointer data, gpointer user_data)
 593 {
 594         struct connman_element *element = data;
 595         const gchar *basepath;
 596         GSList *list;
 597         GNode *node;
 598
 599         g_static_rw_lock_writer_lock(&element_lock);
 600
 601         connman_element_lock(element);
 602
 603         if (element->parent) {
 604                 node = g_node_find(element_root, G_PRE_ORDER,
 605                                         G_TRAVERSE_ALL, element->parent);
 606                 basepath = element->parent->path;
 607
 608                 if (element->subtype == CONNMAN_ELEMENT_SUBTYPE_UNKNOWN)
 609                         element->subtype = element->parent->subtype;
 610         } else {
 611                 node = element_root;
 612                 basepath = "";
 613         }
 614
 615         element->path = g_strdup_printf("%s/%s", basepath, element->name);
 616
 617         connman_element_unlock(element);
 618
 619         DBG("element %p path %s", element, element->path);
 620
 621         g_node_append_data(node, element);
 622
 623         g_static_rw_lock_writer_unlock(&element_lock);
 624
 625         __connman_element_store(element);
 626
 627         g_dbus_register_interface(connection, element->path,
 628                                         CONNMAN_ELEMENT_INTERFACE,
 629                                         element_methods, NULL, NULL,
 630                                                         element, NULL);
 631
 632         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 633                                 CONNMAN_MANAGER_INTERFACE, "ElementAdded",
 634                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 635                                                         DBUS_TYPE_INVALID);
 636
 637         if (element->type == CONNMAN_ELEMENT_TYPE_DEVICE)
 638                 g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 639                                 CONNMAN_MANAGER_INTERFACE, "DeviceAdded",
 640                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 641                                                         DBUS_TYPE_INVALID);
 642
 643         g_static_rw_lock_writer_lock(&element_lock);
 644
 645         for (list = driver_list; list; list = list->next) {
 646                 struct connman_driver *driver = list->data;
 647
 648                 if (match_driver(element, driver) == FALSE)
 649                         continue;
 650
 651                 DBG("driver %p name %s", driver, driver->name);
 652
 653                 if (driver->probe(element) < 0)
 654                         continue;
 655
 656                 connman_element_lock(element);
 657                 element->driver = driver;
 658                 connman_element_unlock(element);
 659         }
 660
 661         g_static_rw_lock_writer_unlock(&element_lock);
 662 }
 663
 664 static void unregister_element(gpointer data, gpointer user_data)
 665 {
 666         struct connman_element *element = data;
 667         GNode *node;
 668
 669         DBG("element %p name %s", element, element->name);
 670
 671         g_static_rw_lock_writer_lock(&element_lock);
 672
 673         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
 674
 675         if (element->driver) {
 676                 if (element->driver->remove)
 677                         element->driver->remove(element);
 678
 679                 connman_element_lock(element);
 680                 element->driver = NULL;
 681                 connman_element_unlock(element);
 682         }
 683
 684         if (node != NULL) {
 685                 g_node_unlink(node);
 686                 g_node_destroy(node);
 687         }
 688
 689         g_static_rw_lock_writer_unlock(&element_lock);
 690
 691         if (element->type == CONNMAN_ELEMENT_TYPE_DEVICE)
 692                 g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 693                                 CONNMAN_MANAGER_INTERFACE, "DeviceRemoved",
 694                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 695                                                         DBUS_TYPE_INVALID);
 696
 697         g_dbus_emit_signal(connection, CONNMAN_MANAGER_PATH,
 698                                 CONNMAN_MANAGER_INTERFACE, "ElementRemoved",
 699                                 DBUS_TYPE_OBJECT_PATH, &element->path,
 700                                                         DBUS_TYPE_INVALID);
 701
 702         g_dbus_unregister_interface(connection, element->path,
 703                                                 CONNMAN_ELEMENT_INTERFACE);
 704
 705         connman_element_unref(element);
 706 }
 707
 708 int __connman_element_init(DBusConnection *conn)
 709 {
 710         struct connman_element *element;
 711
 712         DBG("conn %p", conn);
 713
 714         connection = dbus_connection_ref(conn);
 715         if (connection == NULL)
 716                 return -EIO;
 717
 718         g_static_rw_lock_writer_lock(&element_lock);
 719
 720         element = connman_element_create();
 721
 722         element->name = g_strdup("root");
 723         element->path = g_strdup("/");
 724         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
 725
 726         element_root = g_node_new(element);
 727
 728         g_static_rw_lock_writer_unlock(&element_lock);
 729
 730         thread_register = g_thread_pool_new(register_element,
 731                                                         NULL, 1, FALSE, NULL);
 732         thread_unregister = g_thread_pool_new(unregister_element,
 733                                                         NULL, 1, FALSE, NULL);
 734
 735         return 0;
 736 }
 737
 738 static gboolean free_driver(GNode *node, gpointer data)
 739 {
 740         struct connman_element *element = node->data;
 741
 742         DBG("element %p name %s", element, element->name);
 743
 744         if (element->driver) {
 745                 if (element->driver->remove)
 746                         element->driver->remove(element);
 747
 748                 connman_element_lock(element);
 749                 element->driver = NULL;
 750                 connman_element_unlock(element);
 751         }
 752
 753         return FALSE;
 754 }
 755
 756 static gboolean free_node(GNode *node, gpointer data)
 757 {
 758         struct connman_element *element = node->data;
 759
 760         DBG("element %p name %s", element, element->name);
 761
 762         if (g_node_depth(node) > 1)
 763                 g_thread_pool_push(thread_unregister, element, NULL);
 764
 765         return FALSE;
 766 }
 767
 768 void __connman_element_cleanup(void)
 769 {
 770         DBG("");
 771
 772         g_thread_pool_free(thread_register, TRUE, TRUE);
 773
 774         g_static_rw_lock_writer_lock(&element_lock);
 775         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
 776                                                         free_driver, NULL);
 777         g_static_rw_lock_writer_unlock(&element_lock);
 778
 779         g_static_rw_lock_writer_lock(&element_lock);
 780         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
 781                                                         free_node, NULL);
 782         g_static_rw_lock_writer_unlock(&element_lock);
 783
 784         g_thread_pool_free(thread_unregister, FALSE, TRUE);
 785
 786         g_static_rw_lock_writer_lock(&element_lock);
 787         g_node_destroy(element_root);
 788         element_root = NULL;
 789         g_static_rw_lock_writer_unlock(&element_lock);
 790
 791         dbus_connection_unref(connection);
 792 }