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