X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Flinux%2Fdevice.c;h=5717d92097db837c1cdf26a400e6dbd0b5c945bb;hb=6b92ac505d2cd5c7e390d49bf1f0b399ef9f8327;hp=6ed1622c08a5f1442174f459e07db4351f93fcdd;hpb=41583d5dcfc1277b1a203478de4cce2cd0cda1b1;p=tinc diff --git a/src/linux/device.c b/src/linux/device.c index 6ed1622c..5717d920 100644 --- a/src/linux/device.c +++ b/src/linux/device.c @@ -1,7 +1,7 @@ /* device.c -- Interaction with Linux ethertap and tun/tap device Copyright (C) 2001-2005 Ivo Timmermans, - 2001-2013 Guus Sliepen + 2001-2014 Guus Sliepen This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -105,15 +105,25 @@ static bool setup_device(void) { logger(DEBUG_ALWAYS, LOG_INFO, "%s is a %s", device, device_info); + if(ifr.ifr_flags & IFF_TAP) { + struct ifreq ifr_mac = {}; + if(!ioctl(device_fd, SIOCGIFHWADDR, &ifr_mac)) + memcpy(mymac.x, ifr_mac.ifr_hwaddr.sa_data, ETH_ALEN); + else + logger(DEBUG_ALWAYS, LOG_WARNING, "Could not get MAC address of %s: %s", device, strerror(errno)); + } + return true; } static void close_device(void) { close(device_fd); + device_fd = -1; - free(type); - free(device); - free(iface); + free(type); type = NULL; + free(device); device = NULL; + free(iface); iface = NULL; + device_info = NULL; } static bool read_packet(vpn_packet_t *packet) { @@ -121,7 +131,7 @@ static bool read_packet(vpn_packet_t *packet) { switch(device_type) { case DEVICE_TYPE_TUN: - inlen = read(device_fd, packet->data + 10, MTU - 10); + inlen = read(device_fd, DATA(packet) + 10, MTU - 10); if(inlen <= 0) { logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s", @@ -129,11 +139,11 @@ static bool read_packet(vpn_packet_t *packet) { return false; } - memset(packet->data, 0, 12); + memset(DATA(packet), 0, 12); packet->len = inlen + 10; break; case DEVICE_TYPE_TAP: - inlen = read(device_fd, packet->data, MTU); + inlen = read(device_fd, DATA(packet), MTU); if(inlen <= 0) { logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s", @@ -159,15 +169,15 @@ static bool write_packet(vpn_packet_t *packet) { switch(device_type) { case DEVICE_TYPE_TUN: - packet->data[10] = packet->data[11] = 0; - if(write(device_fd, packet->data + 10, packet->len - 10) < 0) { + DATA(packet)[10] = DATA(packet)[11] = 0; + if(write(device_fd, DATA(packet) + 10, packet->len - 10) < 0) { logger(DEBUG_ALWAYS, LOG_ERR, "Can't write to %s %s: %s", device_info, device, strerror(errno)); return false; } break; case DEVICE_TYPE_TAP: - if(write(device_fd, packet->data, packet->len) < 0) { + if(write(device_fd, DATA(packet), packet->len) < 0) { logger(DEBUG_ALWAYS, LOG_ERR, "Can't write to %s %s: %s", device_info, device, strerror(errno)); return false;