-/*
- open the local ethertap device
-*/
-int setup_tap_fd(void)
-{
- int nfd;
- const char *tapfname;
- config_t const *cfg;
- struct ifreq ifr;
-
-cp
- if((cfg = get_config_val(config, tapdevice)))
- tapfname = cfg->data.ptr;
- else
-#ifdef HAVE_TUNTAP
- tapfname = "/dev/misc/net/tun";
-#else
- tapfname = "/dev/tap0";
-#endif
-cp
- if((nfd = open(tapfname, O_RDWR | O_NONBLOCK)) < 0)
- {
- syslog(LOG_ERR, _("Could not open %s: %m"), tapfname);
- return -1;
- }
-cp
- tap_fd = nfd;
-
- /* Set default MAC address for ethertap devices */
-
- taptype = TAP_TYPE_ETHERTAP;
- mymac.type = SUBNET_MAC;
- mymac.net.mac.address.x[0] = 0xfe;
- mymac.net.mac.address.x[1] = 0xfd;
- mymac.net.mac.address.x[2] = 0x00;
- mymac.net.mac.address.x[3] = 0x00;
- mymac.net.mac.address.x[4] = 0x00;
- mymac.net.mac.address.x[5] = 0x00;
-
-#ifdef HAVE_TUNTAP
- /* Ok now check if this is an old ethertap or a new tun/tap thingie */
- memset(&ifr, 0, sizeof(ifr));
-cp
- ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
- if (netname)
- strncpy(ifr.ifr_name, netname, IFNAMSIZ);
-cp
- if (!ioctl(tap_fd, TUNSETIFF, (void *) &ifr))
- {
- syslog(LOG_INFO, _("%s is a new style tun/tap device"), tapfname);
- taptype = TAP_TYPE_TUNTAP;
- }
-#endif
-
- /* Add name of network interface to environment (for scripts) */
-
- ioctl(tap_fd, SIOCGIFNAME, (void *) &ifr);
- interface_name = xmalloc(strlen(ifr.ifr_name));
- strcpy(interface_name, ifr.ifr_name);
-
-cp
- return 0;
-}