net/wiviz/src/wl_access.c

   1 /*
   2 This file is part of Wi-viz (http://wiviz.natetrue.com).
   3
   4 Wi-viz is free software; you can redistribute it and/or modify
   5 it under the terms of the GNU General Public License v2 as published by
   6 the Free Software Foundation.
   7
   8 Wi-viz is distributed in the hope that it will be useful,
   9 but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 GNU General Public License for more details.
  12
  13 You should have received a copy of the GNU General Public License
  14 along with Wi-viz; if not, write to the Free Software
  15 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  16 */
  17 #include <stdio.h>
  18 #include <unistd.h>
  19 #include <string.h>
  20 #include <errno.h>
  21 #include <sys/ioctl.h>
  22 #include <net/if.h>
  23
  24 #include "wl_access.h"
  25
  26 int wl_ioctl(char *name, int cmd, void *buf, int len)
  27 {
  28         struct ifreq ifr;
  29         wl_ioctl_t ioc;
  30         int ret = 0;
  31         int s;
  32
  33         /* open socket to kernel */
  34         if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
  35                 perror("socket");
  36                 return errno;
  37         }
  38
  39         /* do it */
  40         ioc.cmd = cmd;
  41         ioc.buf = buf;
  42         ioc.len = len;
  43         strncpy(ifr.ifr_name, name, IFNAMSIZ);
  44         ifr.ifr_data = (caddr_t) &ioc;
  45         ret = ioctl(s, SIOCDEVPRIVATE, &ifr);
  46
  47         /* cleanup */
  48         close(s);
  49         return ret;
  50 }
  51
  52 int get_mac(char *name, void *buf)
  53 {
  54         struct ifreq ifr;
  55         int ret = 0;
  56         int s;
  57
  58         /* open socket to kernel */
  59         if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
  60                 perror("socket");
  61                 return errno;
  62         }
  63
  64         strncpy(ifr.ifr_name, name, IFNAMSIZ);
  65         //ifr.ifr_data = (caddr_t) buf;
  66         if ((ret = ioctl(s, SIOCGIFHWADDR, &ifr)) < 0)
  67                         perror(ifr.ifr_name);
  68
  69         /* cleanup */
  70         close(s);
  71         memcpy(buf, &ifr.ifr_hwaddr.sa_data, 6);
  72         return ret;
  73 }