int
mlvpn_tuntap_alloc(struct tuntap_s *tuntap)
{
int fd;
if ((fd = priv_open_tun(tuntap->type,
tuntap->devname, tuntap->maxmtu)) <= 0 )
fatalx("failed to open /dev/net/tun read/write");
tuntap->fd = fd;
return fd;
}
int
mlvpn_tuntap_alloc(struct tuntap_s *tuntap)
{
char devname[8];
int fd;
int i;
/* TODO: handle this by command line/config file ! */
/* FreeBSD/OpenBSD (and others maybe) supports each tun on different device. */
/* examples: /dev/tun0, /dev/tun2 (man 2 if_tun) */
for (i=0; i < 32; i++)
{
snprintf(devname, 5, "%s%d",
tuntap->type == MLVPN_TUNTAPMODE_TAP ? "tap" : "tun", i);
snprintf(tuntap->devname, 10, "/dev/%s", devname);
if ((fd = priv_open_tun(tuntap->type, tuntap->devname)) > 0 )
break;
}
if (fd <= 0)
{
_FATAL("[tuntap] unable to open any /dev/%s0 to 32 read/write. "
"Check permissions.\n",
tuntap->type == MLVPN_TUNTAPMODE_TAP ? "tap" : "tun");
return fd;
}
tuntap->fd = fd;
/* geting the actual tun%d inside devname
* is required for hooks to work properly */
strlcpy(tuntap->devname, devname, MLVPN_IFNAMSIZ-1);
char *hook_args[3] = {tuntap->devname, "tuntap_up", NULL};
mlvpn_hook(MLVPN_HOOK_TUNTAP, 2, hook_args);
return tuntap->fd;
}
