mirror of git://git.sysmocom.de/ofono
udev: Add support for cleaner modem detection
This commit is contained in:
Marcel Holtmann
parent
8bb22cf740
commit
b337d18560
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@ -98,6 +98,9 @@ builtin_sources += plugins/udev.c
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builtin_cflags += @UDEV_CFLAGS@
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builtin_libadd += @UDEV_LIBS@
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builtin_modules += udevng
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builtin_sources += plugins/udevng.c
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if DATAFILES
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rulesdir = @UDEV_DATADIR@
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@ -0,0 +1,591 @@
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/*
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*
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* oFono - Open Source Telephony
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*
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* Copyright (C) 2008-2010 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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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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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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struct modem_info {
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char *syspath;
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char *devname;
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char *driver;
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GSList *devices;
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struct ofono_modem *modem;
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};
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struct device_info {
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char *devpath;
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char *devnode;
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char *interface;
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char *number;
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char *label;
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};
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static gboolean setup_gobi(struct modem_info *modem)
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{
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const char *device = NULL;
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GSList *list;
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DBG("%s", modem->syspath);
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for (list = modem->devices; list; list = list->next) {
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struct device_info *info = list->data;
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DBG("%s %s %s %s", info->devnode, info->interface,
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info->number, info->label);
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if (g_strcmp0(info->interface, "255/255/255") == 0 &&
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g_strcmp0(info->number, "02") == 0)
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device = info->devnode;
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}
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if (device == NULL)
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return FALSE;
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DBG("device=%s", device);
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ofono_modem_set_string(modem->modem, "Device", device);
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return TRUE;
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}
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static gboolean setup_sierra(struct modem_info *modem)
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{
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const char *device = NULL;
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GSList *list;
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DBG("%s", modem->syspath);
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for (list = modem->devices; list; list = list->next) {
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struct device_info *info = list->data;
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DBG("%s %s %s %s", info->devnode, info->interface,
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info->number, info->label);
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if (g_strcmp0(info->interface, "255/255/255") == 0 &&
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g_strcmp0(info->number, "03") == 0)
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device = info->devnode;
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}
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if (device == NULL)
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return FALSE;
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DBG("device=%s", device);
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ofono_modem_set_string(modem->modem, "Device", device);
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return TRUE;
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}
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static gboolean setup_huawei(struct modem_info *modem)
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{
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const char *mdm = NULL, *pcui = NULL;
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GSList *list;
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DBG("%s", modem->syspath);
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for (list = modem->devices; list; list = list->next) {
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struct device_info *info = list->data;
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DBG("%s %s %s %s", info->devnode, info->interface,
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info->number, info->label);
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if (g_strcmp0(info->label, "modem") == 0 ||
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g_strcmp0(info->interface, "255/1/1") == 0 ||
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g_strcmp0(info->interface, "255/2/1") == 0)
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mdm = info->devnode;
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else if (g_strcmp0(info->label, "pcui") == 0 ||
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g_strcmp0(info->interface, "255/1/2") == 0 ||
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g_strcmp0(info->interface, "255/2/2") == 0)
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pcui = info->devnode;
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else if (g_strcmp0(info->interface, "255/255/255") == 0) {
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if (g_strcmp0(info->number, "00") == 0)
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mdm = info->devnode;
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else if (g_strcmp0(info->number, "02") == 0)
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pcui = info->devnode;
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else if (g_strcmp0(info->number, "03") == 0)
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pcui = info->devnode;
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else if (g_strcmp0(info->number, "04") == 0)
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pcui = info->devnode;
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}
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}
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if (mdm == NULL || pcui == NULL)
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return FALSE;
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DBG("modem=%s pcui=%s", mdm, pcui);
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ofono_modem_set_string(modem->modem, "Modem", mdm);
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ofono_modem_set_string(modem->modem, "Pcui", pcui);
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return TRUE;
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}
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static gboolean setup_novatel(struct modem_info *modem)
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{
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const char *aux = NULL, *mdm = NULL;
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GSList *list;
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DBG("%s", modem->syspath);
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for (list = modem->devices; list; list = list->next) {
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struct device_info *info = list->data;
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DBG("%s %s %s %s", info->devnode, info->interface,
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info->number, info->label);
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if (g_strcmp0(info->label, "aux") == 0)
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aux = info->devnode;
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else if (g_strcmp0(info->label, "modem") == 0)
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mdm = info->devnode;
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else if (g_strcmp0(info->interface, "255/255/255") == 0) {
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if (g_strcmp0(info->number, "00") == 0)
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aux = info->devnode;
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else if (g_strcmp0(info->number, "01") == 0)
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mdm = info->devnode;
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}
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}
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if (aux == NULL || mdm == NULL)
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return FALSE;
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DBG("aux=%s modem=%s", aux, mdm);
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ofono_modem_set_string(modem->modem, "PrimaryDevice", aux);
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ofono_modem_set_string(modem->modem, "SecondaryDevice", mdm);
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return TRUE;
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}
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static gboolean setup_zte(struct modem_info *modem)
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{
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const char *aux = NULL, *mdm = NULL;
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GSList *list;
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DBG("%s", modem->syspath);
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for (list = modem->devices; list; list = list->next) {
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struct device_info *info = list->data;
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DBG("%s %s %s %s", info->devnode, info->interface,
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info->number, info->label);
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if (g_strcmp0(info->label, "aux") == 0)
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aux = info->devnode;
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else if (g_strcmp0(info->label, "modem") == 0)
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mdm = info->devnode;
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else if (g_strcmp0(info->interface, "255/255/255") == 0) {
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if (g_strcmp0(info->number, "01") == 0)
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aux = info->devnode;
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else if (g_strcmp0(info->number, "02") == 0)
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mdm = info->devnode;
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else if (g_strcmp0(info->number, "03") == 0)
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mdm = info->devnode;
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}
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}
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if (aux == NULL || mdm == NULL)
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return FALSE;
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DBG("aux=%s modem=%s", aux, mdm);
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ofono_modem_set_string(modem->modem, "Aux", aux);
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ofono_modem_set_string(modem->modem, "Modem", mdm);
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return TRUE;
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}
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static struct {
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const char *name;
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gboolean (*setup)(struct modem_info *modem);
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} driver_list[] = {
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{ "gobi", setup_gobi },
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{ "sierra", setup_sierra },
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{ "huawei", setup_huawei },
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{ "huaweicdma", setup_huawei },
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{ "novatel", setup_novatel },
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{ "zte", setup_zte },
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{ }
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};
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static GHashTable *modem_list;
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static void destroy_modem(gpointer data)
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{
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struct modem_info *modem = data;
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GSList *list;
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DBG("%s", modem->syspath);
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ofono_modem_remove(modem->modem);
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for (list = modem->devices; list; list = list->next) {
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struct device_info *info = list->data;
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DBG("%s", info->devnode);
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g_free(info->devpath);
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g_free(info->devnode);
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g_free(info->interface);
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g_free(info->number);
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g_free(info->label);
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g_free(info);
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list->data = NULL;
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}
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g_slist_free(modem->devices);
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g_free(modem->syspath);
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g_free(modem->devname);
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g_free(modem->driver);
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g_free(modem);
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}
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static gboolean check_remove(gpointer key, gpointer value, gpointer user_data)
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{
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struct modem_info *modem = value;
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const char *devpath = user_data;
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GSList *list;
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for (list = modem->devices; list; list = list->next) {
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struct device_info *info = list->data;
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if (g_strcmp0(info->devpath, devpath) == 0)
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return TRUE;
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}
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return FALSE;
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}
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static void remove_device(struct udev_device *device)
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{
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const char *syspath;
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syspath = udev_device_get_syspath(device);
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if (syspath == NULL)
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return;
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DBG("%s", syspath);
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g_hash_table_foreach_remove(modem_list, check_remove, (char *) syspath);
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}
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static gint compare_device(gconstpointer a, gconstpointer b)
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{
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const struct device_info *info1 = a;
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const struct device_info *info2 = b;
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return g_strcmp0(info1->devnode, info2->devnode);
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}
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static void add_device(const char *syspath, const char *devname,
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const char *driver, struct udev_device *device)
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{
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struct udev_device *intf;
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const char *devpath, *devnode, *interface, *number, *label;
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struct modem_info *modem;
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struct device_info *info;
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devpath = udev_device_get_syspath(device);
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if (devpath == NULL)
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return;
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devnode = udev_device_get_devnode(device);
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if (devnode == NULL)
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return;
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intf = udev_device_get_parent_with_subsystem_devtype(device,
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"usb", "usb_interface");
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if (intf == NULL)
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return;
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interface = udev_device_get_property_value(intf, "INTERFACE");
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number = udev_device_get_sysattr_value(intf, "bInterfaceNumber");
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label = udev_device_get_property_value(device, "OFONO_LABEL");
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DBG("%s", devpath);
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DBG("%s (%s) %s [%s] ==> %s", devnode, driver,
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interface, number, label);
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modem = g_hash_table_lookup(modem_list, syspath);
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if (modem == NULL) {
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modem = g_try_new0(struct modem_info, 1);
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if (modem == NULL)
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return;
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modem->syspath = g_strdup(syspath);
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modem->devname = g_strdup(devname);
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modem->driver = g_strdup(driver);
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g_hash_table_replace(modem_list, modem->syspath, modem);
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}
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info = g_try_new0(struct device_info, 1);
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if (info == NULL)
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return;
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info->devpath = g_strdup(devpath);
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info->devnode = g_strdup(devnode);
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info->interface = g_strdup(interface);
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info->number = g_strdup(number);
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info->label = g_strdup(label);
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modem->devices = g_slist_insert_sorted(modem->devices, info,
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compare_device);
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}
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static void check_device(struct udev_device *device)
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{
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struct udev_device *usb_device;
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const char *bus, *driver, *syspath, *devname;
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bus = udev_device_get_property_value(device, "ID_BUS");
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if (bus == NULL)
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return;
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if (g_str_equal(bus, "usb") == FALSE)
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return;
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usb_device = udev_device_get_parent_with_subsystem_devtype(device,
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"usb", "usb_device");
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if (usb_device == NULL)
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return;
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syspath = udev_device_get_syspath(usb_device);
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if (syspath == NULL)
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return;
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devname = udev_device_get_devnode(usb_device);
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if (devname == NULL)
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return;
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driver = udev_device_get_property_value(usb_device, "OFONO_DRIVER");
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if (driver == NULL)
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return;
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add_device(syspath, devname, driver, device);
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}
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static void create_modem(gpointer key, gpointer value, gpointer user_data)
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{
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struct modem_info *modem = value;
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const char *syspath = key;
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unsigned int i;
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if (modem->devices == NULL)
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return;
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if (modem->modem != NULL)
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return;
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DBG("%s", syspath);
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modem->modem = ofono_modem_create(NULL, modem->driver);
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if (modem->modem == NULL)
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return;
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for (i = 0; driver_list[i].name; i++) {
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if (g_str_equal(driver_list[i].name, modem->driver) == FALSE)
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continue;
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if (driver_list[i].setup(modem) == TRUE) {
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ofono_modem_register(modem->modem);
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return;
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}
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}
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ofono_modem_remove(modem->modem);
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modem->modem = NULL;
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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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DBG("");
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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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check_device(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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g_hash_table_foreach(modem_list, create_modem, NULL);
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}
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static guint udev_delay = 0;
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static gboolean check_modem_list(gpointer user_data)
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{
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udev_delay = 0;
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DBG("");
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g_hash_table_foreach(modem_list, create_modem, NULL);
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return FALSE;
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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 *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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action = udev_device_get_action(device);
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if (action == NULL)
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return TRUE;
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if (g_str_equal(action, "add") == TRUE) {
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if (udev_delay > 0)
|
||||
g_source_remove(udev_delay);
|
||||
|
||||
check_device(device);
|
||||
|
||||
udev_delay = g_timeout_add_seconds(1, check_modem_list, NULL);
|
||||
} else if (g_str_equal(action, "remove") == TRUE)
|
||||
remove_device(device);
|
||||
|
||||
udev_device_unref(device);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static struct udev *udev_ctx;
|
||||
static struct udev_monitor *udev_mon;
|
||||
static guint udev_watch = 0;
|
||||
|
||||
static void udev_start(void)
|
||||
{
|
||||
GIOChannel *channel;
|
||||
int fd;
|
||||
|
||||
DBG("");
|
||||
|
||||
if (udev_monitor_enable_receiving(udev_mon) < 0) {
|
||||
ofono_error("Failed to enable udev monitor");
|
||||
return;
|
||||
}
|
||||
|
||||
enumerate_devices(udev_ctx);
|
||||
|
||||
fd = udev_monitor_get_fd(udev_mon);
|
||||
|
||||
channel = g_io_channel_unix_new(fd);
|
||||
if (channel == NULL)
|
||||
return;
|
||||
|
||||
udev_watch = g_io_add_watch(channel, G_IO_IN, udev_event, udev_mon);
|
||||
|
||||
g_io_channel_unref(channel);
|
||||
}
|
||||
|
||||
static int detect_init(void)
|
||||
{
|
||||
udev_ctx = udev_new();
|
||||
if (udev_ctx == NULL) {
|
||||
ofono_error("Failed to create udev context");
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
udev_mon = udev_monitor_new_from_netlink(udev_ctx, "udev");
|
||||
if (udev_mon == NULL) {
|
||||
ofono_error("Failed to create udev monitor");
|
||||
udev_unref(udev_ctx);
|
||||
udev_ctx = NULL;
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
modem_list = g_hash_table_new_full(g_str_hash, g_str_equal,
|
||||
NULL, destroy_modem);
|
||||
|
||||
udev_monitor_filter_add_match_subsystem_devtype(udev_mon, "tty", NULL);
|
||||
udev_monitor_filter_add_match_subsystem_devtype(udev_mon, "net", NULL);
|
||||
|
||||
udev_monitor_filter_update(udev_mon);
|
||||
|
||||
udev_start();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void detect_exit(void)
|
||||
{
|
||||
if (udev_delay > 0)
|
||||
g_source_remove(udev_delay);
|
||||
|
||||
if (udev_watch > 0)
|
||||
g_source_remove(udev_watch);
|
||||
|
||||
if (udev_ctx == NULL)
|
||||
return;
|
||||
|
||||
udev_monitor_filter_remove(udev_mon);
|
||||
|
||||
g_hash_table_destroy(modem_list);
|
||||
|
||||
udev_monitor_unref(udev_mon);
|
||||
udev_unref(udev_ctx);
|
||||
}
|
||||
|
||||
OFONO_PLUGIN_DEFINE(udevng, "udev hardware detection", VERSION,
|
||||
OFONO_PLUGIN_PRIORITY_DEFAULT, detect_init, detect_exit)
|
||||
Loading…
Reference in New Issue