/* * Copyright (C) 2000 Lennert Buytenhek * * 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 the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */#include <stdio.h>#include <stdlib.h>#include <errno.h>#include <string.h>#include <sys/fcntl.h>#include <sys/ioctl.h>#include "libbridge.h"#include "libbridge_private.h"int br_add_bridge(const char *brname){	int ret;#ifdef SIOCBRADDBR	ret = ioctl(br_socket_fd, SIOCBRADDBR, brname);	if (ret < 0)#endif	{		char _br[IFNAMSIZ];		unsigned long arg[3] 			= { BRCTL_ADD_BRIDGE, (unsigned long) _br };		strncpy(_br, brname, IFNAMSIZ);		ret = ioctl(br_socket_fd, SIOCSIFBR, arg);	} 	return ret < 0 ? errno : 0;}int br_del_bridge(const char *brname){	int ret;#ifdef SIOCBRDELBR		ret = ioctl(br_socket_fd, SIOCBRDELBR, brname);	if (ret < 0)#endif	{		char _br[IFNAMSIZ];		unsigned long arg[3] 			= { BRCTL_DEL_BRIDGE, (unsigned long) _br };		strncpy(_br, brname, IFNAMSIZ);		ret = ioctl(br_socket_fd, SIOCSIFBR, arg);	} 	return  ret < 0 ? errno : 0;}int br_add_interface(const char *bridge, const char *dev){	struct ifreq ifr;	int err;	int ifindex = if_nametoindex(dev);	if (ifindex == 0) 		return ENODEV;		strncpy(ifr.ifr_name, bridge, IFNAMSIZ);#ifdef SIOCBRADDIF	ifr.ifr_ifindex = ifindex;	err = ioctl(br_socket_fd, SIOCBRADDIF, &ifr);	if (err < 0)#endif	{		unsigned long args[4] = { BRCTL_ADD_IF, ifindex, 0, 0 };					  		ifr.ifr_data = (char *) args;		err = ioctl(br_socket_fd, SIOCDEVPRIVATE, &ifr);	}	return err < 0 ? errno : 0;}int br_del_interface(const char *bridge, const char *dev){	struct ifreq ifr;	int err;	int ifindex = if_nametoindex(dev);	if (ifindex == 0) 		return ENODEV;		strncpy(ifr.ifr_name, bridge, IFNAMSIZ);#ifdef SIOCBRDELIF	ifr.ifr_ifindex = ifindex;	err = ioctl(br_socket_fd, SIOCBRDELIF, &ifr);	if (err < 0)#endif			{		unsigned long args[4] = { BRCTL_DEL_IF, ifindex, 0, 0 };					  		ifr.ifr_data = (char *) args;		err = ioctl(br_socket_fd, SIOCDEVPRIVATE, &ifr);	}	return err < 0 ? errno : 0;}