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      1 /*	$NetBSD: dm_component.c,v 1.2 2016/01/26 23:12:15 pooka Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2009 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: dm_component.c,v 1.2 2016/01/26 23:12:15 pooka Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/conf.h>
     33 #include <sys/device.h>
     34 #include <sys/stat.h>
     35 #include <sys/filedesc.h>
     36 
     37 #include <sys/vfs_syscalls.h>
     38 
     39 #include <rump-sys/kern.h>
     40 #include <rump-sys/vfs.h>
     41 
     42 RUMP_COMPONENT(RUMP_COMPONENT_DEV)
     43 {
     44 	extern const struct bdevsw dm_bdevsw;
     45 	extern const struct cdevsw dm_cdevsw;
     46 	devmajor_t bmaj, cmaj;
     47 	int error;
     48 
     49 	/* go, mydevfs */
     50 	bmaj = cmaj = -1;
     51 
     52 	if ((error = devsw_attach("dm", &dm_bdevsw, &bmaj,
     53 	    &dm_cdevsw, &cmaj)) != 0)
     54 		panic("cannot attach dm: %d", error);
     55 
     56 	do_sys_mkdir("/dev/mapper", 0770, UIO_SYSSPACE);
     57 
     58 	if ((error = rump_vfs_makedevnodes(S_IFCHR, "/dev/mapper/control", 0,
     59 		    cmaj, 0, 1)) != 0) {
     60 		panic("cannot create device-mapper control device: %d", error);
     61 
     62 	}
     63 }
     64