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      1 /*	$NetBSD: drvctl_component.c,v 1.5 2022/03/28 12:33:22 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2010 Antti Kantee.  All Rights Reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     16  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     18  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: drvctl_component.c,v 1.5 2022/03/28 12:33:22 riastradh Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/conf.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 RUMP_COMPONENT(RUMP_COMPONENT_DEV)
     40 {
     41         extern const struct cdevsw drvctl_cdevsw;
     42 	devmajor_t bmaj, cmaj;
     43 	int error;
     44 
     45 	bmaj = cmaj = NODEVMAJOR;
     46 	error = devsw_attach("drvctl", NULL, &bmaj, &drvctl_cdevsw, &cmaj);
     47 	if (error != 0)
     48 		panic("drvctl devsw attach failed: %d", error);
     49 
     50 	error = rump_vfs_makeonedevnode(S_IFCHR, "/dev/drvctl", cmaj, 0);
     51 	if ( error !=0)
     52 		panic("cannot create drvctl device node: %d", error);
     53 
     54 	devsw_detach(NULL, &drvctl_cdevsw);
     55 }
     56