src/rfkill.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  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 <stdio.h>
  27 #include <errno.h>
  28 #include <fcntl.h>
  29 #include <unistd.h>
  30 #include <string.h>
  31 #include <stdint.h>
  32
  33 #include "connman.h"
  34
  35 enum rfkill_type {
  36         RFKILL_TYPE_ALL = 0,
  37         RFKILL_TYPE_WLAN,
  38         RFKILL_TYPE_BLUETOOTH,
  39         RFKILL_TYPE_UWB,
  40         RFKILL_TYPE_WIMAX,
  41         RFKILL_TYPE_WWAN,
  42         RFKILL_TYPE_GPS,
  43         RFKILL_TYPE_FM,
  44 };
  45
  46 enum rfkill_operation {
  47         RFKILL_OP_ADD = 0,
  48         RFKILL_OP_DEL,
  49         RFKILL_OP_CHANGE,
  50         RFKILL_OP_CHANGE_ALL,
  51 };
  52
  53 struct rfkill_event {
  54         uint32_t idx;
  55         uint8_t  type;
  56         uint8_t  op;
  57         uint8_t  soft;
  58         uint8_t  hard;
  59 };
  60
  61 static enum connman_service_type convert_type(uint8_t type)
  62 {
  63         switch (type) {
  64         case RFKILL_TYPE_WLAN:
  65                 return CONNMAN_SERVICE_TYPE_WIFI;
  66         case RFKILL_TYPE_BLUETOOTH:
  67                 return CONNMAN_SERVICE_TYPE_BLUETOOTH;
  68         case RFKILL_TYPE_WIMAX:
  69                 return CONNMAN_SERVICE_TYPE_WIMAX;
  70         case RFKILL_TYPE_WWAN:
  71                 return CONNMAN_SERVICE_TYPE_CELLULAR;
  72         }
  73
  74         return CONNMAN_SERVICE_TYPE_UNKNOWN;
  75 }
  76
  77 static GIOStatus rfkill_process(GIOChannel *chan)
  78 {
  79         unsigned char buf[32];
  80         struct rfkill_event *event = (void *) buf;
  81         enum connman_service_type type;
  82         gsize len;
  83         GIOStatus status;
  84
  85         DBG("");
  86
  87         memset(buf, 0, sizeof(buf));
  88
  89         status = g_io_channel_read_chars(chan, (gchar *) buf,
  90                         sizeof(struct rfkill_event), &len, NULL);
  91
  92         if (status != G_IO_STATUS_NORMAL)
  93                 return status;
  94
  95         if (len != sizeof(struct rfkill_event))
  96                 return status;
  97
  98         DBG("idx %u type %u op %u soft %u hard %u", event->idx,
  99                                                 event->type, event->op,
 100                                                 event->soft, event->hard);
 101
 102         switch (event->op) {
 103         case RFKILL_OP_ADD:
 104                 type = convert_type(event->type);
 105                 __connman_technology_add_rfkill(event->idx, type,
 106                                                 event->soft, event->hard);
 107                 break;
 108         case RFKILL_OP_DEL:
 109                 __connman_technology_remove_rfkill(event->idx);
 110                 break;
 111         case RFKILL_OP_CHANGE:
 112                 __connman_technology_update_rfkill(event->idx, event->soft,
 113                                                                 event->hard);
 114                 break;
 115         default:
 116                 break;
 117         }
 118
 119         return status;
 120 }
 121
 122 static gboolean rfkill_event(GIOChannel *chan,
 123                                 GIOCondition cond, gpointer data)
 124 {
 125         if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
 126                 return FALSE;
 127
 128         if (rfkill_process(chan) == G_IO_STATUS_ERROR)
 129                 return FALSE;
 130
 131         return TRUE;
 132 }
 133
 134 static GIOChannel *channel = NULL;
 135
 136 int __connman_rfkill_init(void)
 137 {
 138         GIOFlags flags;
 139         int fd;
 140
 141         DBG("");
 142
 143         fd = open("/dev/rfkill", O_RDWR);
 144         if (fd < 0) {
 145                 connman_error("Failed to open RFKILL control device");
 146                 return -EIO;
 147         }
 148
 149         channel = g_io_channel_unix_new(fd);
 150         g_io_channel_set_close_on_unref(channel, TRUE);
 151
 152         flags = g_io_channel_get_flags(channel);
 153         flags |= G_IO_FLAG_NONBLOCK;
 154         g_io_channel_set_flags(channel, flags, NULL);
 155
 156         /* Process current RFKILL events sent on device open */
 157         while (rfkill_process(channel) == G_IO_STATUS_NORMAL);
 158
 159         g_io_add_watch(channel, G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
 160                                                         rfkill_event, NULL);
 161
 162         return 0;
 163 }
 164
 165 void __connman_rfkill_cleanup(void)
 166 {
 167         DBG("");
 168
 169         if (channel == NULL)
 170                 return;
 171
 172         g_io_channel_shutdown(channel, TRUE, NULL);
 173         g_io_channel_unref(channel);
 174
 175         channel = NULL;
 176 }