1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055
|
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details:
*
* Copyright (C) 2008 - 2009 Novell, Inc.
* Copyright (C) 2009 - 2010 Red Hat, Inc.
*/
#include <string.h>
#include <ctype.h>
#include <gmodule.h>
#define G_UDEV_API_IS_SUBJECT_TO_CHANGE
#include <gudev/gudev.h>
#include <dbus/dbus-glib.h>
#include <dbus/dbus-glib-lowlevel.h>
#include "mm-manager.h"
#include "mm-errors.h"
#include "mm-plugin.h"
static gboolean impl_manager_enumerate_devices (MMManager *manager,
GPtrArray **devices,
GError **err);
#include "mm-manager-glue.h"
G_DEFINE_TYPE (MMManager, mm_manager, G_TYPE_OBJECT)
enum {
DEVICE_ADDED,
DEVICE_REMOVED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
#define MM_MANAGER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), MM_TYPE_MANAGER, MMManagerPrivate))
typedef struct {
DBusGConnection *connection;
GUdevClient *udev;
GSList *plugins;
GHashTable *modems;
GHashTable *supports;
} MMManagerPrivate;
typedef struct {
MMManager *manager;
char *subsys;
char *name;
char *physdev_path;
GSList *plugins;
GSList *cur_plugin;
guint defer_id;
guint done_id;
guint32 best_level;
MMPlugin *best_plugin;
} SupportsInfo;
static MMPlugin *
load_plugin (const char *path)
{
MMPlugin *plugin = NULL;
GModule *module;
MMPluginCreateFunc plugin_create_func;
int *major_plugin_version, *minor_plugin_version;
module = g_module_open (path, G_MODULE_BIND_LAZY);
if (!module) {
g_warning ("Could not load plugin %s: %s", path, g_module_error ());
return NULL;
}
if (!g_module_symbol (module, "mm_plugin_major_version", (gpointer *) &major_plugin_version)) {
g_warning ("Could not load plugin %s: Missing major version info", path);
goto out;
}
if (*major_plugin_version != MM_PLUGIN_MAJOR_VERSION) {
g_warning ("Could not load plugin %s: Plugin major version %d, %d is required",
path, *major_plugin_version, MM_PLUGIN_MAJOR_VERSION);
goto out;
}
if (!g_module_symbol (module, "mm_plugin_minor_version", (gpointer *) &minor_plugin_version)) {
g_warning ("Could not load plugin %s: Missing minor version info", path);
goto out;
}
if (*minor_plugin_version != MM_PLUGIN_MINOR_VERSION) {
g_warning ("Could not load plugin %s: Plugin minor version %d, %d is required",
path, *minor_plugin_version, MM_PLUGIN_MINOR_VERSION);
goto out;
}
if (!g_module_symbol (module, "mm_plugin_create", (gpointer *) &plugin_create_func)) {
g_warning ("Could not load plugin %s: %s", path, g_module_error ());
goto out;
}
plugin = (*plugin_create_func) ();
if (plugin) {
g_object_weak_ref (G_OBJECT (plugin), (GWeakNotify) g_module_close, module);
g_message ("Loaded plugin %s", mm_plugin_get_name (plugin));
} else
g_warning ("Could not load plugin %s: initialization failed", path);
out:
if (!plugin)
g_module_close (module);
return plugin;
}
static void
load_plugins (MMManager *manager)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
GDir *dir;
const char *fname;
MMPlugin *generic_plugin = NULL;
if (!g_module_supported ()) {
g_warning ("GModules are not supported on your platform!");
return;
}
dir = g_dir_open (PLUGINDIR, 0, NULL);
if (!dir) {
g_warning ("No plugins found");
return;
}
while ((fname = g_dir_read_name (dir)) != NULL) {
char *path;
MMPlugin *plugin;
if (!g_str_has_suffix (fname, G_MODULE_SUFFIX))
continue;
path = g_module_build_path (PLUGINDIR, fname);
plugin = load_plugin (path);
g_free (path);
if (plugin) {
if (!strcmp (mm_plugin_get_name (plugin), MM_PLUGIN_GENERIC_NAME))
generic_plugin = plugin;
else
priv->plugins = g_slist_append (priv->plugins, plugin);
}
}
/* Make sure the generic plugin is last */
if (generic_plugin)
priv->plugins = g_slist_append (priv->plugins, generic_plugin);
g_dir_close (dir);
}
MMManager *
mm_manager_new (DBusGConnection *bus)
{
MMManager *manager;
g_return_val_if_fail (bus != NULL, NULL);
manager = (MMManager *) g_object_new (MM_TYPE_MANAGER, NULL);
if (manager) {
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
priv->connection = dbus_g_connection_ref (bus);
dbus_g_connection_register_g_object (priv->connection,
MM_DBUS_PATH,
G_OBJECT (manager));
}
return manager;
}
static void
remove_modem (MMManager *manager, MMModem *modem)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
char *device;
device = mm_modem_get_device (modem);
g_assert (device);
g_debug ("Removed modem %s", device);
g_signal_emit (manager, signals[DEVICE_REMOVED], 0, modem);
g_hash_table_remove (priv->modems, device);
g_free (device);
}
static void
check_export_modem (MMManager *self, MMModem *modem)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (self);
char *modem_physdev;
GHashTableIter iter;
gpointer value;
/* A modem is only exported to D-Bus when both of the following are true:
*
* 1) the modem is valid
* 2) all ports the modem provides have either been grabbed or are
* unsupported by any plugin
*
* This ensures that all the modem's ports are completely ready before
* any clients can do anything with it.
*
* FIXME: if udev or the kernel are really slow giving us ports, there's a
* chance that a port could show up after the modem is already created and
* all other ports are already handled. That chance is very small though.
*/
modem_physdev = mm_modem_get_device (modem);
g_assert (modem_physdev);
/* Check for ports that are in the process of being interrogated by plugins */
g_hash_table_iter_init (&iter, priv->supports);
while (g_hash_table_iter_next (&iter, NULL, &value)) {
SupportsInfo *info = value;
if (!strcmp (info->physdev_path, modem_physdev)) {
g_debug ("(%s/%s): outstanding support task prevents export of %s",
info->subsys, info->name, modem_physdev);
goto out;
}
}
/* Already exported? This can happen if the modem is exported and the kernel
* discovers another of the modem's ports.
*/
if (g_object_get_data (G_OBJECT (modem), DBUS_PATH_TAG))
goto out;
/* No outstanding port tasks, so if the modem is valid we can export it */
if (mm_modem_get_valid (modem)) {
static guint32 id = 0;
char *path, *data_device = NULL;
path = g_strdup_printf (MM_DBUS_PATH"/Modems/%d", id++);
dbus_g_connection_register_g_object (priv->connection, path, G_OBJECT (modem));
g_object_set_data_full (G_OBJECT (modem), DBUS_PATH_TAG, path, (GDestroyNotify) g_free);
g_debug ("Exported modem %s as %s", modem_physdev, path);
g_object_get (G_OBJECT (modem), MM_MODEM_DATA_DEVICE, &data_device, NULL);
g_debug ("(%s): data port is %s", path, data_device);
g_free (data_device);
g_signal_emit (self, signals[DEVICE_ADDED], 0, modem);
}
out:
g_free (modem_physdev);
}
static void
modem_valid (MMModem *modem, GParamSpec *pspec, gpointer user_data)
{
MMManager *manager = MM_MANAGER (user_data);
if (mm_modem_get_valid (modem))
check_export_modem (manager, modem);
else
remove_modem (manager, modem);
}
#define MANAGER_PLUGIN_TAG "manager-plugin"
static void
add_modem (MMManager *manager, MMModem *modem, MMPlugin *plugin)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
char *device;
device = mm_modem_get_device (modem);
g_assert (device);
if (!g_hash_table_lookup (priv->modems, device)) {
g_hash_table_insert (priv->modems, g_strdup (device), modem);
g_object_set_data (G_OBJECT (modem), MANAGER_PLUGIN_TAG, plugin);
g_debug ("Added modem %s", device);
g_signal_connect (modem, "notify::" MM_MODEM_VALID, G_CALLBACK (modem_valid), manager);
check_export_modem (manager, modem);
}
g_free (device);
}
static void
enumerate_devices_cb (gpointer key, gpointer val, gpointer user_data)
{
MMModem *modem = MM_MODEM (val);
GPtrArray **devices = (GPtrArray **) user_data;
const char *path;
if (mm_modem_get_valid (modem)) {
path = g_object_get_data (G_OBJECT (modem), DBUS_PATH_TAG);
g_return_if_fail (path != NULL);
g_ptr_array_add (*devices, g_strdup (path));
}
}
static gboolean
impl_manager_enumerate_devices (MMManager *manager,
GPtrArray **devices,
GError **err)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
*devices = g_ptr_array_sized_new (g_hash_table_size (priv->modems));
g_hash_table_foreach (priv->modems, enumerate_devices_cb, devices);
return TRUE;
}
static MMModem *
find_modem_for_device (MMManager *manager, const char *device)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
GHashTableIter iter;
gpointer key, value;
MMModem *found = NULL;
g_hash_table_iter_init (&iter, priv->modems);
while (g_hash_table_iter_next (&iter, &key, &value) && !found) {
MMModem *candidate = MM_MODEM (value);
char *candidate_device = mm_modem_get_device (candidate);
if (!strcmp (device, candidate_device))
found = candidate;
g_free (candidate_device);
}
return found;
}
static MMModem *
find_modem_for_port (MMManager *manager, const char *subsys, const char *name)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
GHashTableIter iter;
gpointer key, value;
g_hash_table_iter_init (&iter, priv->modems);
while (g_hash_table_iter_next (&iter, &key, &value)) {
MMModem *modem = MM_MODEM (value);
if (mm_modem_owns_port (modem, subsys, name))
return modem;
}
return NULL;
}
static SupportsInfo *
supports_info_new (MMManager *self,
const char *subsys,
const char *name,
const char *physdev_path)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (self);
SupportsInfo *info;
info = g_malloc0 (sizeof (SupportsInfo));
info->manager = self;
info->subsys = g_strdup (subsys);
info->name = g_strdup (name);
info->physdev_path = g_strdup (physdev_path);
info->plugins = g_slist_copy (priv->plugins);
info->cur_plugin = info->plugins;
return info;
}
static void
supports_info_free (SupportsInfo *info)
{
/* Cancel any in-process operation on the first plugin */
if (info->cur_plugin)
mm_plugin_cancel_supports_port (MM_PLUGIN (info->cur_plugin->data), info->subsys, info->name);
if (info->defer_id)
g_source_remove (info->defer_id);
if (info->done_id)
g_source_remove (info->done_id);
g_free (info->subsys);
g_free (info->name);
g_slist_free (info->plugins);
memset (info, 0, sizeof (SupportsInfo));
g_free (info);
}
static char *
get_key (const char *subsys, const char *name)
{
return g_strdup_printf ("%s%s", subsys, name);
}
static void supports_callback (MMPlugin *plugin,
const char *subsys,
const char *name,
guint32 level,
gpointer user_data);
static void try_supports_port (MMManager *manager,
MMPlugin *plugin,
MMModem *existing,
SupportsInfo *info);
static gboolean
supports_defer_timeout (gpointer user_data)
{
SupportsInfo *info = user_data;
MMModem *existing;
existing = find_modem_for_device (info->manager, info->physdev_path);
g_debug ("(%s): re-checking support...", info->name);
try_supports_port (info->manager,
MM_PLUGIN (info->cur_plugin->data),
existing,
info);
return FALSE;
}
static void
try_supports_port (MMManager *manager,
MMPlugin *plugin,
MMModem *existing,
SupportsInfo *info)
{
MMPluginSupportsResult result;
result = mm_plugin_supports_port (plugin,
info->subsys,
info->name,
info->physdev_path,
existing,
supports_callback,
info);
switch (result) {
case MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED:
/* If the plugin knows it doesn't support the modem, just call the
* callback and indicate 0 support.
*/
supports_callback (plugin, info->subsys, info->name, 0, info);
break;
case MM_PLUGIN_SUPPORTS_PORT_DEFER:
g_debug ("(%s): (%s) deferring support check",
mm_plugin_get_name (plugin),
info->name);
if (info->defer_id)
g_source_remove (info->defer_id);
/* defer port detection for a bit as requested by the plugin */
info->defer_id = g_timeout_add (3000, supports_defer_timeout, info);
break;
case MM_PLUGIN_SUPPORTS_PORT_IN_PROGRESS:
default:
break;
}
}
static void
supports_cleanup (MMManager *self,
const char *subsys,
const char *name,
MMModem *modem)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (self);
char *key;
g_return_if_fail (subsys != NULL);
g_return_if_fail (name != NULL);
key = get_key (subsys, name);
g_hash_table_remove (priv->supports, key);
g_free (key);
/* Each time a supports task is cleaned up, check whether the modem is
* now completely probed/handled and should be exported to D-Bus clients.
*
* IMPORTANT: this must be done after removing the supports into from
* priv->supports since check_export_modem() searches through priv->supports
* for outstanding supports tasks.
*/
if (modem)
check_export_modem (self, modem);
}
static gboolean
do_grab_port (gpointer user_data)
{
SupportsInfo *info = user_data;
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (info->manager);
MMModem *modem = NULL;
GError *error = NULL;
GSList *iter;
/* No more plugins to try */
if (info->best_plugin) {
MMModem *existing;
existing = g_hash_table_lookup (priv->modems, info->physdev_path);
/* Create the modem */
modem = mm_plugin_grab_port (info->best_plugin, info->subsys, info->name, existing, &error);
if (modem) {
guint32 modem_type = MM_MODEM_TYPE_UNKNOWN;
const char *type_name = "UNKNOWN";
char *device;;
g_object_get (G_OBJECT (modem), MM_MODEM_TYPE, &modem_type, NULL);
if (modem_type == MM_MODEM_TYPE_GSM)
type_name = "GSM";
else if (modem_type == MM_MODEM_TYPE_CDMA)
type_name = "CDMA";
device = mm_modem_get_device (modem);
g_message ("(%s): %s modem %s claimed port %s",
mm_plugin_get_name (info->best_plugin),
type_name,
device,
info->name);
g_free (device);
add_modem (info->manager, modem, info->best_plugin);
} else {
g_warning ("%s: plugin '%s' claimed to support %s/%s but couldn't: (%d) %s",
__func__,
mm_plugin_get_name (info->best_plugin),
info->subsys,
info->name,
error ? error->code : -1,
(error && error->message) ? error->message : "(unknown)");
modem = existing;
}
}
/* Tell each plugin to clean up any outstanding supports task */
for (iter = info->plugins; iter; iter = g_slist_next (iter))
mm_plugin_cancel_supports_port (MM_PLUGIN (iter->data), info->subsys, info->name);
g_slist_free (info->plugins);
info->cur_plugin = info->plugins = NULL;
supports_cleanup (info->manager, info->subsys, info->name, modem);
return FALSE;
}
static void
supports_callback (MMPlugin *plugin,
const char *subsys,
const char *name,
guint32 level,
gpointer user_data)
{
SupportsInfo *info = user_data;
MMPlugin *next_plugin = NULL;
MMModem *existing;
/* Is this plugin's result better than any one we've tried before? */
if (level > info->best_level) {
info->best_level = level;
info->best_plugin = plugin;
}
/* If there's already a modem for this port's physical device, stop asking
* plugins because the same plugin that owns the modem gets this port no
* matter what.
*/
existing = find_modem_for_device (info->manager, info->physdev_path);
if (existing) {
MMPlugin *existing_plugin;
existing_plugin = MM_PLUGIN (g_object_get_data (G_OBJECT (existing), MANAGER_PLUGIN_TAG));
g_assert (existing_plugin);
if (plugin == existing_plugin) {
if (level == 0) {
/* If the plugin that just completed the support check claims not to
* support this port, but this plugin is clearly the right plugin
* since it claimed this port's physical modem, just drop the port.
*/
g_debug ("(%s/%s): ignoring port unsupported by physical modem's plugin",
info->subsys, info->name);
supports_cleanup (info->manager, info->subsys, info->name, existing);
return;
}
/* Otherwise, this port was supported by the plugin that owns the
* port's physical modem, so we stop the supports checks anyway.
*/
next_plugin = NULL;
} else if (info->best_plugin != existing_plugin) {
/* If this port hasn't yet been handled by the right plugin, stop
* asking all other plugins if they support this port, just let the
* plugin that handles this port's physical device see if it
* supports it.
*/
next_plugin = existing_plugin;
} else {
g_debug ("(%s/%s): plugin %p (%s) existing %p (%s) info->best %p (%s)",
info->subsys, info->name,
plugin,
plugin ? mm_plugin_get_name (plugin) : "none",
existing_plugin,
existing_plugin ? mm_plugin_get_name (existing_plugin) : "none",
info->best_plugin,
info->best_plugin ? mm_plugin_get_name (info->best_plugin) : "none");
g_assert_not_reached ();
}
} else {
info->cur_plugin = g_slist_next (info->cur_plugin);
if (info->cur_plugin)
next_plugin = MM_PLUGIN (info->cur_plugin->data);
}
/* Don't bother with Generic if some other plugin already supports this port */
if (next_plugin) {
const char *next_name = mm_plugin_get_name (next_plugin);
if (info->best_plugin && !strcmp (next_name, MM_PLUGIN_GENERIC_NAME))
next_plugin = NULL;
}
if (next_plugin) {
/* Try the next plugin */
try_supports_port (info->manager, next_plugin, existing, info);
} else {
/* All done; let the best modem grab the port */
info->done_id = g_idle_add (do_grab_port, info);
}
}
static GUdevDevice *
find_physical_device (GUdevDevice *child)
{
GUdevDevice *iter, *old = NULL;
GUdevDevice *physdev = NULL;
const char *subsys, *type;
guint32 i = 0;
gboolean is_usb = FALSE, is_pci = FALSE, is_pcmcia = FALSE, is_platform = FALSE;
g_return_val_if_fail (child != NULL, NULL);
iter = g_object_ref (child);
while (iter && i++ < 8) {
subsys = g_udev_device_get_subsystem (iter);
if (subsys) {
if (is_usb || !strcmp (subsys, "usb")) {
is_usb = TRUE;
type = g_udev_device_get_devtype (iter);
if (type && !strcmp (type, "usb_device")) {
physdev = iter;
break;
}
} else if (is_pcmcia || !strcmp (subsys, "pcmcia")) {
GUdevDevice *pcmcia_parent;
const char *tmp_subsys;
is_pcmcia = TRUE;
/* If the parent of this PCMCIA device is no longer part of
* the PCMCIA subsystem, we want to stop since we're looking
* for the base PCMCIA device, not the PCMCIA controller which
* is usually PCI or some other bus type.
*/
pcmcia_parent = g_udev_device_get_parent (iter);
if (pcmcia_parent) {
tmp_subsys = g_udev_device_get_subsystem (pcmcia_parent);
if (tmp_subsys && strcmp (tmp_subsys, "pcmcia"))
physdev = iter;
g_object_unref (pcmcia_parent);
if (physdev)
break;
}
} else if (is_platform || !strcmp (subsys, "platform")) {
/* Take the first platform parent as the physical device */
is_platform = TRUE;
physdev = iter;
break;
} else if (is_pci || !strcmp (subsys, "pci")) {
is_pci = TRUE;
physdev = iter;
break;
}
}
old = iter;
iter = g_udev_device_get_parent (old);
g_object_unref (old);
}
return physdev;
}
static void
device_added (MMManager *manager, GUdevDevice *device)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
const char *subsys, *name, *physdev_path, *physdev_subsys;
SupportsInfo *info;
char *key;
gboolean found;
GUdevDevice *physdev = NULL;
MMPlugin *plugin;
MMModem *existing;
g_return_if_fail (device != NULL);
if (!g_slist_length (priv->plugins))
return;
subsys = g_udev_device_get_subsystem (device);
name = g_udev_device_get_name (device);
/* ignore VTs */
if (strncmp (name, "tty", 3) == 0 && isdigit (name[3]))
return;
if (find_modem_for_port (manager, subsys, name))
return;
key = get_key (subsys, name);
found = !!g_hash_table_lookup (priv->supports, key);
if (found)
goto out;
/* Find the port's physical device's sysfs path. This is the kernel device
* that "owns" all the ports of the device, like the USB device or the PCI
* device the provides each tty or network port.
*/
physdev = find_physical_device (device);
if (!physdev) {
/* Warn about it, but filter out some common ports that we know don't have
* anything to do with mobile broadband.
*/
if ( strcmp (name, "console")
&& strcmp (name, "ptmx")
&& strcmp (name, "lo")
&& strcmp (name, "tty")
&& !strstr (name, "virbr"))
g_debug ("(%s/%s): could not get port's parent device", subsys, name);
goto out;
}
/* Is the device blacklisted? */
if (g_udev_device_get_property_as_boolean (physdev, "ID_MM_DEVICE_IGNORE")) {
g_debug ("(%s/%s): port's parent device is blacklisted", subsys, name);
goto out;
}
/* If the physdev is a 'platform' device that's not whitelisted, ignore it */
physdev_subsys = g_udev_device_get_subsystem (physdev);
if ( physdev_subsys
&& !strcmp (physdev_subsys, "platform")
&& !g_udev_device_get_property_as_boolean (physdev, "ID_MM_PLATFORM_DRIVER_PROBE")) {
g_debug ("(%s/%s): port's parent platform driver is not whitelisted", subsys, name);
goto out;
}
physdev_path = g_udev_device_get_sysfs_path (physdev);
if (!physdev_path) {
g_debug ("(%s/%s): could not get port's parent device sysfs path", subsys, name);
goto out;
}
/* Success; now ask plugins if they can handle this port */
info = supports_info_new (manager, subsys, name, physdev_path);
g_hash_table_insert (priv->supports, g_strdup (key), info);
/* If this port's physical modem is already owned by a plugin, don't bother
* asking all plugins whether they support this port, just let the owning
* plugin check if it supports the port.
*/
plugin = MM_PLUGIN (info->cur_plugin->data);
existing = find_modem_for_device (manager, physdev_path);
if (existing)
plugin = MM_PLUGIN (g_object_get_data (G_OBJECT (existing), MANAGER_PLUGIN_TAG));
try_supports_port (manager, plugin, existing, info);
out:
if (physdev)
g_object_unref (physdev);
g_free (key);
}
static void
device_removed (MMManager *manager, GUdevDevice *device)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
MMModem *modem;
const char *subsys, *name;
char *key;
SupportsInfo *info;
g_return_if_fail (device != NULL);
if (!g_slist_length (priv->plugins))
return;
subsys = g_udev_device_get_subsystem (device);
name = g_udev_device_get_name (device);
if (strcmp (subsys, "usb") != 0) {
/* find_modem_for_port handles tty and net removal */
modem = find_modem_for_port (manager, subsys, name);
if (modem) {
mm_modem_release_port (modem, subsys, name);
return;
}
} else {
/* This case is designed to handle the case where, at least with kernel 2.6.31, unplugging
* an in-use ttyACMx device results in udev generating remove events for the usb, but the
* ttyACMx device (subsystem tty) is not removed, since it was in-use. So if we have not
* found a modem for the port (above), we're going to look here to see if we have a modem
* associated with the newly removed device. If so, we'll remove the modem, since the
* device has been removed. That way, if the device is reinserted later, we'll go through
* the process of exporting it.
*/
const char *sysfs_path = g_udev_device_get_sysfs_path (device);
// g_debug ("Looking for a modem for removed device %s", sysfs_path);
modem = find_modem_for_device (manager, sysfs_path);
if (modem) {
g_debug ("Removing modem claimed by removed device %s", sysfs_path);
remove_modem (manager, modem);
return;
}
}
/* Maybe a plugin is checking whether or not the port is supported */
key = get_key (subsys, name);
info = g_hash_table_lookup (priv->supports, key);
if (info) {
if (info->plugins)
mm_plugin_cancel_supports_port (MM_PLUGIN (info->plugins->data), subsys, name);
g_hash_table_remove (priv->supports, key);
}
g_free (key);
}
static void
handle_uevent (GUdevClient *client,
const char *action,
GUdevDevice *device,
gpointer user_data)
{
MMManager *self = MM_MANAGER (user_data);
const char *subsys;
g_return_if_fail (action != NULL);
/* A bit paranoid */
subsys = g_udev_device_get_subsystem (device);
g_return_if_fail (subsys != NULL);
g_return_if_fail (!strcmp (subsys, "tty") || !strcmp (subsys, "net") || !strcmp (subsys, "usb"));
/* We only care about tty/net devices when adding modem ports,
* but for remove, also handle usb parent device remove events
*/
if ((!strcmp (action, "add") || !strcmp (action, "move")) && strcmp (subsys, "usb") !=0 )
device_added (self, device);
else if (!strcmp (action, "remove"))
device_removed (self, device);
}
void
mm_manager_start (MMManager *manager)
{
MMManagerPrivate *priv;
GList *devices, *iter;
g_return_if_fail (manager != NULL);
g_return_if_fail (MM_IS_MANAGER (manager));
priv = MM_MANAGER_GET_PRIVATE (manager);
devices = g_udev_client_query_by_subsystem (priv->udev, "tty");
for (iter = devices; iter; iter = g_list_next (iter)) {
device_added (manager, G_UDEV_DEVICE (iter->data));
g_object_unref (G_OBJECT (iter->data));
}
g_list_free (devices);
devices = g_udev_client_query_by_subsystem (priv->udev, "net");
for (iter = devices; iter; iter = g_list_next (iter)) {
device_added (manager, G_UDEV_DEVICE (iter->data));
g_object_unref (G_OBJECT (iter->data));
}
g_list_free (devices);
}
typedef struct {
MMManager *manager;
MMModem *modem;
} RemoveInfo;
static gboolean
remove_disable_one (gpointer user_data)
{
RemoveInfo *info = user_data;
remove_modem (info->manager, info->modem);
g_free (info);
return FALSE;
}
static void
remove_disable_done (MMModem *modem,
GError *error,
gpointer user_data)
{
RemoveInfo *info;
/* Schedule modem removal from an idle handler since we get here deep
* in the modem removal callchain and can't remove it quite yet from here.
*/
info = g_malloc0 (sizeof (RemoveInfo));
info->manager = MM_MANAGER (user_data);
info->modem = modem;
g_idle_add (remove_disable_one, info);
}
void
mm_manager_shutdown (MMManager *self)
{
GList *modems, *iter;
g_return_if_fail (self != NULL);
g_return_if_fail (MM_IS_MANAGER (self));
modems = g_hash_table_get_values (MM_MANAGER_GET_PRIVATE (self)->modems);
for (iter = modems; iter; iter = g_list_next (iter)) {
MMModem *modem = MM_MODEM (iter->data);
if (mm_modem_get_state (modem) >= MM_MODEM_STATE_ENABLING)
mm_modem_disable (modem, remove_disable_done, self);
else
remove_disable_done (modem, NULL, self);
}
g_list_free (modems);
/* Disabling may take a few iterations of the mainloop, so the caller
* has to iterate the mainloop until all devices have been disabled and
* removed.
*/
}
guint32
mm_manager_num_modems (MMManager *self)
{
g_return_val_if_fail (self != NULL, 0);
g_return_val_if_fail (MM_IS_MANAGER (self), 0);
return g_hash_table_size (MM_MANAGER_GET_PRIVATE (self)->modems);
}
static void
mm_manager_init (MMManager *manager)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (manager);
const char *subsys[4] = { "tty", "net", "usb", NULL };
priv->modems = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_object_unref);
load_plugins (manager);
priv->supports = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, (GDestroyNotify) supports_info_free);
priv->udev = g_udev_client_new (subsys);
g_assert (priv->udev);
g_signal_connect (priv->udev, "uevent", G_CALLBACK (handle_uevent), manager);
}
static void
finalize (GObject *object)
{
MMManagerPrivate *priv = MM_MANAGER_GET_PRIVATE (object);
g_hash_table_destroy (priv->supports);
g_hash_table_destroy (priv->modems);
g_slist_foreach (priv->plugins, (GFunc) g_object_unref, NULL);
g_slist_free (priv->plugins);
if (priv->udev)
g_object_unref (priv->udev);
if (priv->connection)
dbus_g_connection_unref (priv->connection);
G_OBJECT_CLASS (mm_manager_parent_class)->finalize (object);
}
static void
mm_manager_class_init (MMManagerClass *manager_class)
{
GObjectClass *object_class = G_OBJECT_CLASS (manager_class);
g_type_class_add_private (object_class, sizeof (MMManagerPrivate));
/* Virtual methods */
object_class->finalize = finalize;
/* Signals */
signals[DEVICE_ADDED] =
g_signal_new ("device-added",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (MMManagerClass, device_added),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
G_TYPE_OBJECT);
signals[DEVICE_REMOVED] =
g_signal_new ("device-removed",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (MMManagerClass, device_removed),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
G_TYPE_OBJECT);
dbus_g_object_type_install_info (G_TYPE_FROM_CLASS (manager_class),
&dbus_glib_mm_manager_object_info);
dbus_g_error_domain_register (MM_SERIAL_ERROR, "org.freedesktop.ModemManager.Modem", MM_TYPE_SERIAL_ERROR);
dbus_g_error_domain_register (MM_MODEM_ERROR, "org.freedesktop.ModemManager.Modem", MM_TYPE_MODEM_ERROR);
dbus_g_error_domain_register (MM_MODEM_CONNECT_ERROR, "org.freedesktop.ModemManager.Modem", MM_TYPE_MODEM_CONNECT_ERROR);
dbus_g_error_domain_register (MM_MOBILE_ERROR, "org.freedesktop.ModemManager.Modem.Gsm", MM_TYPE_MOBILE_ERROR);
}
|