sys/rump/dev/lib/libdm/component.c

   1 /*      $NetBSD$        */
   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: component.c,v 1.2 2009/09/07 11:23:39 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
  40 #include "rump_dev_private.h"
  41 #include "rump_vfs_private.h"
  42
  43 void dmattach(int);
  44
  45 void
  46 rump_dev_dm_init()
  47 {
  48         extern const struct bdevsw dm_bdevsw;
  49         extern const struct cdevsw dm_cdevsw;
  50         devmajor_t bmaj, cmaj;
  51         int error;
  52
  53         /* go, mydevfs */
  54         bmaj = cmaj = -1;
  55
  56         if ((error = devsw_attach("dm", &dm_bdevsw, &bmaj,
  57             &dm_cdevsw, &cmaj)) != 0)
  58                 panic("cannot attach dm: %d", error);
  59
  60         do_sys_mkdir("/dev/mapper", 0770, UIO_SYSSPACE);
  61
  62         if ((error = rump_vfs_makedevnodes(S_IFCHR, "/dev/mapper/control", 0,
  63                     cmaj, 0, 1)) != 0) {
  64                 panic("cannot create device-mapper control device: %d", error);
  65
  66         }
  67         rump_pdev_add(dmattach, 1);
  68 }