git.maemo.org Git - connman/blob - src/udev.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2009  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <stdarg.h>
  27 #include <sys/types.h>
  28
  29 #define LIBUDEV_I_KNOW_THE_API_IS_SUBJECT_TO_CHANGE
  30 #include <libudev.h>
  31
  32 #include <glib.h>
  33
  34 #include "connman.h"
  35
  36 #ifdef NEED_UDEV_MONITOR_RECEIVE_DEVICE
  37 static struct udev_device *udev_monitor_receive_device(struct udev_monitor *monitor);
  38 {
  39         return udev_monitor_get_device(monitor);
  40 }
  41 #endif
  42
  43 #ifdef NEED_UDEV_DEVICE_GET_ACTION
  44 static const char *udev_device_get_action(struct udev_device *device)
  45 {
  46         return NULL;
  47 }
  48 #endif
  49
  50 static gboolean udev_event(GIOChannel *channel,
  51                                 GIOCondition condition, gpointer user_data)
  52 {
  53         struct udev_monitor *monitor = user_data;
  54         struct udev_device *device;
  55         const char *action;
  56
  57         device = udev_monitor_receive_device(monitor);
  58         if (device == NULL)
  59                 return TRUE;
  60
  61         action = udev_device_get_action(device);
  62         if (action == NULL)
  63                 goto done;
  64
  65         connman_debug("=== %s ===", action);
  66
  67 done:
  68         udev_device_unref(device);
  69
  70         return TRUE;
  71 }
  72
  73 static struct udev *udev_ctx;
  74 static struct udev_monitor *udev_mon;
  75 static guint udev_watch = 0;
  76
  77 int __connman_udev_init(void)
  78 {
  79         GIOChannel *channel;
  80         int fd;
  81
  82         DBG("");
  83
  84         udev_ctx = udev_new();
  85         if (udev_ctx == NULL) {
  86                 connman_error("Failed to create udev context");
  87                 return -1;
  88         }
  89
  90         udev_mon = udev_monitor_new_from_socket(udev_ctx,
  91                                                 "@/org/moblin/connman/udev");
  92         if (udev_mon == NULL) {
  93                 connman_error("Failed to create udev monitor");
  94                 udev_unref(udev_ctx);
  95                 udev_ctx = NULL;
  96                 return -1;
  97         }
  98
  99         if (udev_monitor_enable_receiving(udev_mon) < 0) {
 100                 connman_error("Failed to enable udev monitor");
 101                 udev_unref(udev_ctx);
 102                 udev_ctx = NULL;
 103                 udev_monitor_unref(udev_mon);
 104                 return -1;
 105         }
 106
 107         fd = udev_monitor_get_fd(udev_mon);
 108
 109         channel = g_io_channel_unix_new(fd);
 110         if (channel == NULL)
 111                 return 0;
 112
 113         udev_watch = g_io_add_watch(channel, G_IO_IN, udev_event, udev_mon);
 114
 115         g_io_channel_unref(channel);
 116
 117         return 0;
 118 }
 119
 120 void __connman_udev_cleanup(void)
 121 {
 122         DBG("");
 123
 124         if (udev_watch > 0)
 125                 g_source_remove(udev_watch);
 126
 127         if (udev_ctx == NULL)
 128                 return;
 129
 130         udev_monitor_unref(udev_mon);
 131         udev_unref(udev_ctx);
 132 }