1/*	$NetBSD: zfs_component.c,v 1.3 2019/05/07 08:51:09 hannken 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: zfs_component.c,v 1.3 2019/05/07 08:51:09 hannken 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
39RUMP_COMPONENT(RUMP_COMPONENT_VFS)
40{
41	extern const struct bdevsw zfs_bdevsw;
42	extern const struct cdevsw zfs_cdevsw;
43	devmajor_t bmaj, cmaj;
44	int error, exist;
45
46	/* go, mydevfs */
47	bmaj = cmaj = -1;
48
49	if ((error = devsw_attach("zfs", &zfs_bdevsw, &bmaj,
50	    &zfs_cdevsw, &cmaj)) != 0 && error != EEXIST)
51		panic("cannot attach zfs: %d", error);
52	exist = (error == EEXIST);
53
54	if ((error = rump_vfs_makeonedevnode(S_IFCHR,
55	    "/dev/zfs", cmaj, 0)) != 0)
56		panic("cannot create zfs dev nodes: %d", error);
57
58	if (!exist)
59		devsw_detach(&zfs_bdevsw, &zfs_cdevsw);
60}
61