5 * Copyright (C) 2007 Intel Corporation. All rights reserved.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
32 #include <sys/ioctl.h>
37 static int __net_ifindex(const char *sysfs)
48 size = strlen(sysfs) + 9;
50 pathname = malloc(size);
52 sprintf(pathname, "%s/ifindex", sysfs);
54 fd = open(pathname, O_RDONLY);
61 memset(buf, 0, sizeof(buf));
63 len = read(fd, buf, sizeof(buf) - 1);
77 char *__net_ifname(const char *sysfs)
82 ifindex = __net_ifindex(sysfs);
86 sk = socket (PF_INET, SOCK_DGRAM, 0);
90 memset(&ifr, 0, sizeof(ifr));
91 ifr.ifr_ifindex = ifindex;
93 err = ioctl(sk, SIOCGIFNAME, &ifr);
100 return strdup(ifr.ifr_name);
103 void __net_free(void *ptr)