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      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