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 41 RUMP_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