tun_component.c revision 1.1 
1/*	$NetBSD: tun_component.c,v 1.1 2016/09/05 02:25:38 ozaki-r Exp $	*/
2
3/*
4 * Copyright (c) 2016 Internet Initiative Japan Inc.
5 * All Rights Reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
17 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__KERNEL_RCSID(0, "$NetBSD: tun_component.c,v 1.1 2016/09/05 02:25:38 ozaki-r Exp $");
31
32#include <sys/param.h>
33#include <sys/device.h>
34#include <sys/stat.h>
35
36#include <rump-sys/kern.h>
37#include <rump-sys/vfs.h>
38
39#include "ioconf.h"
40
41RUMP_COMPONENT(RUMP_COMPONENT_NET_IF)
42{
43	extern const struct cdevsw tun_cdevsw;
44	extern devmajor_t tun_bmajor, tun_cmajor;
45	int error;
46
47	error = devsw_attach("tun", NULL, &tun_bmajor,
48	    &tun_cdevsw, &tun_cmajor);
49	if (error != 0)
50		panic("tun devsw attach failed: %d", error);
51
52	error = rump_vfs_makeonedevnode(S_IFCHR, "/dev/tun", tun_cmajor,
53	    0xfffff);
54	if (error != 0)
55		panic("cannot create tun device node: %d", error);
56
57	error = rump_vfs_makedevnodes(S_IFCHR, "/dev/tun", '0', tun_cmajor,
58	    0, 4);
59	if (error != 0)
60		panic("cannot create tun[0-4] device node: %d", error);
61
62	devsw_detach(NULL, &tun_cdevsw);
63}
64