/* $NetBSD: lkminit_vfs.c,v 1.12 2008/06/28 15:50:20 rumble Exp $ */ /*- * Copyright (c) 1996 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Michael Graff <explorer@flame.com>. * * 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION 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: lkminit_vfs.c,v 1.12 2008/06/28 15:50:20 rumble Exp $"); #include <sys/param.h> #include <sys/sysctl.h> #include <sys/ioctl.h> #include <sys/systm.h> #include <sys/conf.h> #include <sys/mount.h> #include <sys/exec.h> #include <sys/lkm.h> #include <sys/file.h> #include <sys/errno.h> #include <sys/vnode.h> #include <miscfs/nullfs/null.h> int nullfs_lkmentry(struct lkm_table *, int, int); /* * This is the vfsops table for the file system in question */ extern struct vfsops nullfs_vfsops; /* * declare the filesystem */ MOD_VFS("nullfs", -1, &nullfs_vfsops); /* * take care of fs specific sysctl nodes */ static int load(struct lkm_table *, int); static int unload(struct lkm_table *, int); static struct sysctllog *_nullfs_log; /* * entry point */ int nullfs_lkmentry(lkmtp, cmd, ver) struct lkm_table *lkmtp; int cmd; int ver; { DISPATCH(lkmtp, cmd, ver, load, unload, lkm_nofunc) } static int load(lkmtp, cmd) struct lkm_table *lkmtp; int cmd; { sysctl_createv(&_nullfs_log, 0, NULL, NULL, CTLFLAG_PERMANENT, CTLTYPE_NODE, "vfs", NULL, NULL, 0, NULL, 0, CTL_VFS, CTL_EOL); sysctl_createv(&_nullfs_log, 0, NULL, NULL, CTLFLAG_PERMANENT, CTLTYPE_NODE, "null", SYSCTL_DESCR("Loopback file system"), NULL, 0, NULL, 0, CTL_VFS, 9, CTL_EOL); /* * XXX the "9" above could be dynamic, thereby eliminating * one more instance of the "number to vfs" mapping problem, * but "9" is the order as taken from sys/mount.h */ return (0); } static int unload(lkmtp, cmd) struct lkm_table *lkmtp; int cmd; { sysctl_teardown(&_nullfs_log); return (0); }