mirror of git://git.sysmocom.de/ofono
444 lines
11 KiB
C
444 lines
11 KiB
C
/*
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*
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* oFono - Open Source Telephony
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*
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* Copyright (C) 2008-2009 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <errno.h>
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#define LIBUDEV_I_KNOW_THE_API_IS_SUBJECT_TO_CHANGE
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#include <libudev.h>
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#include <glib.h>
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#define OFONO_API_SUBJECT_TO_CHANGE
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#include <ofono/plugin.h>
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#include <ofono/modem.h>
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#include <ofono/log.h>
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#ifdef NEED_UDEV_MONITOR_FILTER
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static int udev_monitor_filter_add_match_subsystem_devtype(struct udev_monitor *udev_monitor,
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const char *subsystem, const char *devtype)
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{
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return -EINVAL;
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}
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static int udev_monitor_filter_update(struct udev_monitor *udev_monitor)
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{
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return -EINVAL;
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}
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static int udev_monitor_filter_remove(struct udev_monitor *udev_monitor)
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{
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return -EINVAL;
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}
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#endif
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static GSList *modem_list = NULL;
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static struct ofono_modem *find_modem(const char *devpath)
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{
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GSList *list;
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for (list = modem_list; list; list = list->next) {
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struct ofono_modem *modem = list->data;
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const char *path = ofono_modem_get_string(modem, "Path");
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if (g_strcmp0(devpath, path) == 0)
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return modem;
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}
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return NULL;
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}
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static const char *get_driver(struct udev_device *udev_device)
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{
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struct udev_list_entry *entry;
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const char *driver = NULL;
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entry = udev_device_get_properties_list_entry(udev_device);
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while (entry) {
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const char *name = udev_list_entry_get_name(entry);
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if (g_strcmp0(name, "OFONO_DRIVER") == 0)
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driver = udev_list_entry_get_value(entry);
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entry = udev_list_entry_get_next(entry);
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}
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return driver;
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}
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#define MODEM_DEVICE "ModemDevice"
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#define DATA_DEVICE "DataDevice"
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#define GPS_DEVICE "GPSDevice"
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#define NETWORK_INTERFACE "NetworkInterface"
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static void add_mbm(struct ofono_modem *modem,
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struct udev_device *udev_device)
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{
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const char *description, *devnode;
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const char *device, *network;
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int registered;
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description = udev_device_get_sysattr_value(udev_device,
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"device/interface");
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if (description == NULL)
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return;
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registered = ofono_modem_get_integer(modem, "Registered");
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if (registered != 0)
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return;
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if (g_str_has_suffix(description, "Minicard Modem") == TRUE) {
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devnode = udev_device_get_devnode(udev_device);
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ofono_modem_set_string(modem, MODEM_DEVICE, devnode);
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} else if (g_str_has_suffix(description,
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"Minicard Data Modem") == TRUE) {
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devnode = udev_device_get_devnode(udev_device);
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ofono_modem_set_string(modem, DATA_DEVICE, devnode);
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} else if (g_str_has_suffix(description,
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"Minicard GPS Port") == TRUE) {
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devnode = udev_device_get_devnode(udev_device);
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ofono_modem_set_string(modem, GPS_DEVICE, devnode);
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} else if (g_str_has_suffix(description,
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"Minicard Network Adapter") == TRUE) {
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devnode = udev_device_get_property_value(udev_device,
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"INTERFACE");
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ofono_modem_set_string(modem, NETWORK_INTERFACE, devnode);
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} else
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return;
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device = ofono_modem_get_string(modem, MODEM_DEVICE);
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network = ofono_modem_get_string(modem, NETWORK_INTERFACE);
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if (device != NULL && network != NULL) {
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ofono_modem_set_integer(modem, "Registered", 1);
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ofono_modem_register(modem);
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}
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}
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static void add_hso(struct ofono_modem *modem,
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struct udev_device *udev_device)
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{
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const char *subsystem, *type, *devnode;
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const char *device, *network;
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int registered;
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subsystem = udev_device_get_subsystem(udev_device);
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if (subsystem == NULL)
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return;
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registered = ofono_modem_get_integer(modem, "Registered");
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if (registered != 0)
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return;
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type = udev_device_get_sysattr_value(udev_device, "hsotype");
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if (type != NULL && g_str_has_suffix(type, "Control") == TRUE) {
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devnode = udev_device_get_devnode(udev_device);
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ofono_modem_set_string(modem, MODEM_DEVICE, devnode);
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} else if (g_str_equal(subsystem, "net") == TRUE) {
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devnode = udev_device_get_property_value(udev_device,
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"INTERFACE");
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ofono_modem_set_string(modem, NETWORK_INTERFACE, devnode);
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} else
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return;
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device = ofono_modem_get_string(modem, MODEM_DEVICE);
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network = ofono_modem_get_string(modem, NETWORK_INTERFACE);
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if (device != NULL && network != NULL) {
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ofono_modem_set_integer(modem, "Registered", 1);
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ofono_modem_register(modem);
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}
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}
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static void add_huawei(struct ofono_modem *modem,
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struct udev_device *udev_device)
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{
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const char *devnode;
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int registered;
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registered = ofono_modem_get_integer(modem, "Registered");
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if (registered != 0)
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return;
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devnode = udev_device_get_devnode(udev_device);
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ofono_modem_set_string(modem, "Device", devnode);
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ofono_modem_set_integer(modem, "Registered", 1);
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ofono_modem_register(modem);
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}
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static void add_novatel(struct ofono_modem *modem,
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struct udev_device *udev_device)
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{
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const char *devnode;
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int registered;
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registered = ofono_modem_get_integer(modem, "Registered");
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if (registered != 0)
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return;
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devnode = udev_device_get_devnode(udev_device);
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ofono_modem_set_string(modem, "Device", devnode);
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ofono_modem_set_integer(modem, "Registered", 1);
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ofono_modem_register(modem);
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}
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static void add_modem(struct udev_device *udev_device)
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{
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struct ofono_modem *modem;
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struct udev_device *parent;
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const char *devpath, *driver = NULL;
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parent = udev_device_get_parent(udev_device);
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if (parent == NULL)
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return;
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driver = get_driver(parent);
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if (driver == NULL) {
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parent = udev_device_get_parent(parent);
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driver = get_driver(parent);
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if (driver == NULL) {
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parent = udev_device_get_parent(parent);
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driver = get_driver(parent);
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if (driver == NULL)
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return;
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}
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}
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devpath = udev_device_get_devpath(parent);
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if (devpath == NULL)
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return;
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modem = find_modem(devpath);
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if (modem == NULL) {
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modem = ofono_modem_create(driver);
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if (modem == NULL)
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return;
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ofono_modem_set_string(modem, "Path", devpath);
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ofono_modem_set_integer(modem, "Registered", 0);
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modem_list = g_slist_prepend(modem_list, modem);
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}
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if (g_strcmp0(driver, "mbm") == 0)
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add_mbm(modem, udev_device);
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else if (g_strcmp0(driver, "hso") == 0)
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add_hso(modem, udev_device);
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else if (g_strcmp0(driver, "huawei") == 0)
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add_huawei(modem, udev_device);
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else if (g_strcmp0(driver, "novatel") == 0)
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add_novatel(modem, udev_device);
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}
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static void remove_modem(struct udev_device *udev_device)
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{
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struct ofono_modem *modem;
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struct udev_device *parent;
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const char *devpath, *driver = NULL;
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parent = udev_device_get_parent(udev_device);
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if (parent == NULL)
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return;
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driver = get_driver(parent);
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if (driver == NULL) {
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parent = udev_device_get_parent(parent);
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driver = get_driver(parent);
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if (driver == NULL) {
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parent = udev_device_get_parent(parent);
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driver = get_driver(parent);
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if (driver == NULL)
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return;
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}
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}
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devpath = udev_device_get_devpath(parent);
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if (devpath == NULL)
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return;
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modem = find_modem(devpath);
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if (modem == NULL)
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return;
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modem_list = g_slist_remove(modem_list, modem);
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ofono_modem_remove(modem);
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}
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static void enumerate_devices(struct udev *context)
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{
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struct udev_enumerate *enumerate;
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struct udev_list_entry *entry;
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enumerate = udev_enumerate_new(context);
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if (enumerate == NULL)
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return;
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udev_enumerate_add_match_subsystem(enumerate, "tty");
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udev_enumerate_add_match_subsystem(enumerate, "net");
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udev_enumerate_scan_devices(enumerate);
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entry = udev_enumerate_get_list_entry(enumerate);
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while (entry) {
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const char *syspath = udev_list_entry_get_name(entry);
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struct udev_device *device;
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device = udev_device_new_from_syspath(context, syspath);
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if (device != NULL) {
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const char *subsystem;
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subsystem = udev_device_get_subsystem(device);
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if (g_strcmp0(subsystem, "tty") == 0 ||
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g_strcmp0(subsystem, "net") == 0)
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add_modem(device);
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udev_device_unref(device);
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}
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entry = udev_list_entry_get_next(entry);
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}
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udev_enumerate_unref(enumerate);
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}
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static gboolean udev_event(GIOChannel *channel,
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GIOCondition condition, gpointer user_data)
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{
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struct udev_monitor *monitor = user_data;
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struct udev_device *device;
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const char *subsystem, *action;
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device = udev_monitor_receive_device(monitor);
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if (device == NULL)
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return TRUE;
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subsystem = udev_device_get_subsystem(device);
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if (subsystem == NULL)
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goto done;
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action = udev_device_get_action(device);
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if (action == NULL)
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goto done;
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if (g_str_equal(action, "add") == TRUE) {
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if (g_strcmp0(subsystem, "tty") == 0 ||
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g_strcmp0(subsystem, "net") == 0)
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add_modem(device);
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} else if (g_str_equal(action, "remove") == TRUE) {
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if (g_strcmp0(subsystem, "tty") == 0 ||
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g_strcmp0(subsystem, "net") == 0)
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remove_modem(device);
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}
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done:
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udev_device_unref(device);
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return TRUE;
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}
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static struct udev *udev_ctx;
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static struct udev_monitor *udev_mon;
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static guint udev_watch = 0;
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static void udev_start(void)
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{
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GIOChannel *channel;
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int fd;
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if (udev_monitor_enable_receiving(udev_mon) < 0) {
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ofono_error("Failed to enable udev monitor");
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return;
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}
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enumerate_devices(udev_ctx);
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fd = udev_monitor_get_fd(udev_mon);
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channel = g_io_channel_unix_new(fd);
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if (channel == NULL)
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return;
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udev_watch = g_io_add_watch(channel, G_IO_IN, udev_event, udev_mon);
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g_io_channel_unref(channel);
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}
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static int udev_init(void)
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{
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udev_ctx = udev_new();
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if (udev_ctx == NULL) {
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ofono_error("Failed to create udev context");
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return -EIO;
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}
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udev_mon = udev_monitor_new_from_netlink(udev_ctx, "udev");
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if (udev_mon == NULL) {
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ofono_error("Failed to create udev monitor");
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udev_unref(udev_ctx);
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udev_ctx = NULL;
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return -EIO;
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}
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udev_monitor_filter_add_match_subsystem_devtype(udev_mon, "tty", NULL);
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udev_monitor_filter_add_match_subsystem_devtype(udev_mon, "net", NULL);
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udev_monitor_filter_update(udev_mon);
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udev_start();
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return 0;
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}
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static void udev_exit(void)
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{
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GSList *list;
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if (udev_watch > 0)
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g_source_remove(udev_watch);
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for (list = modem_list; list; list = list->next) {
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struct ofono_modem *modem = list->data;
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ofono_modem_remove(modem);
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}
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g_slist_free(modem_list);
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modem_list = NULL;
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if (udev_ctx == NULL)
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return;
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udev_monitor_filter_remove(udev_mon);
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udev_monitor_unref(udev_mon);
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udev_unref(udev_ctx);
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}
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OFONO_PLUGIN_DEFINE(udev, "udev hardware detection", VERSION,
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OFONO_PLUGIN_PRIORITY_DEFAULT, udev_init, udev_exit)
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