1 /* 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software donated to Berkeley by 6 * Jan-Simon Pendry. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)null.h 8.3 (Berkeley) 8/20/94 33 * 34 * $FreeBSD: src/sys/miscfs/nullfs/null.h,v 1.11.2.3 2001/06/26 04:20:09 bp Exp $ 35 * $DragonFly: src/sys/vfs/nullfs/null.h,v 1.10 2008/09/18 16:08:32 dillon Exp $ 36 */ 37 38 struct null_args { 39 char *target; /* Target of loopback */ 40 struct export_args export; /* Network export information */ 41 }; 42 43 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 44 45 struct null_mount { 46 struct mount *nullm_vfs; 47 struct vnode *nullm_rootvp; /* Reference to root null_node */ 48 struct netexport export; 49 }; 50 51 #endif 52 53 #ifdef _KERNEL 54 #define MOUNTTONULLMOUNT(mp) ((struct null_mount *)((mp)->mnt_data)) 55 56 #ifdef NULLFS_DEBUG 57 #define NULLFSDEBUG(format, args...) kprintf(format ,## args) 58 #else 59 #define NULLFSDEBUG(format, args...) 60 #endif /* NULLFS_DEBUG */ 61 62 int nullfs_export(struct mount *mp, int op, 63 const struct export_args *export); 64 65 #endif /* _KERNEL */ 66