/* $NetBSD: zfs_component.c,v 1.3 2019/05/07 08:51:09 hannken Exp $ */

/* $NetBSD: zfs_component.c,v 1.3 2019/05/07 08:51:09 hannken Exp $ */

/*
* Copyright (c) 2009 Antti Kantee. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: zfs_component.c,v 1.3 2019/05/07 08:51:09 hannken Exp $");

#include <sys/param.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/stat.h>

#include <rump-sys/kern.h>
#include <rump-sys/vfs.h>

RUMP_COMPONENT(RUMP_COMPONENT_VFS)
{
extern const struct bdevsw zfs_bdevsw;
extern const struct cdevsw zfs_cdevsw;
devmajor_t bmaj, cmaj;
int error, exist;

/* go, mydevfs */
bmaj = cmaj = -1;

if ((error = devsw_attach("zfs", &zfs_bdevsw, &bmaj,
&zfs_cdevsw, &cmaj)) != 0 && error != EEXIST)
panic("cannot attach zfs: %d", error);
exist = (error == EEXIST);

if ((error = rump_vfs_makeonedevnode(S_IFCHR,
"/dev/zfs", cmaj, 0)) != 0)
panic("cannot create zfs dev nodes: %d", error);

if (!exist)
devsw_detach(&zfs_bdevsw, &zfs_cdevsw);
}