1*3b7181b7Sguenther /* $OpenBSD: mfsnode.h,v 1.15 2016/11/07 00:26:33 guenther Exp $ */ 21faf140aSniklas /* $NetBSD: mfsnode.h,v 1.3 1996/02/09 22:31:31 christos Exp $ */ 3df930be7Sderaadt 4df930be7Sderaadt /* 5df930be7Sderaadt * Copyright (c) 1989, 1993 6df930be7Sderaadt * The Regents of the University of California. All rights reserved. 7df930be7Sderaadt * 8df930be7Sderaadt * Redistribution and use in source and binary forms, with or without 9df930be7Sderaadt * modification, are permitted provided that the following conditions 10df930be7Sderaadt * are met: 11df930be7Sderaadt * 1. Redistributions of source code must retain the above copyright 12df930be7Sderaadt * notice, this list of conditions and the following disclaimer. 13df930be7Sderaadt * 2. Redistributions in binary form must reproduce the above copyright 14df930be7Sderaadt * notice, this list of conditions and the following disclaimer in the 15df930be7Sderaadt * documentation and/or other materials provided with the distribution. 1629295d1cSmillert * 3. Neither the name of the University nor the names of its contributors 17df930be7Sderaadt * may be used to endorse or promote products derived from this software 18df930be7Sderaadt * without specific prior written permission. 19df930be7Sderaadt * 20df930be7Sderaadt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21df930be7Sderaadt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22df930be7Sderaadt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23df930be7Sderaadt * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24df930be7Sderaadt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25df930be7Sderaadt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26df930be7Sderaadt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27df930be7Sderaadt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28df930be7Sderaadt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29df930be7Sderaadt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30df930be7Sderaadt * SUCH DAMAGE. 31df930be7Sderaadt * 32df930be7Sderaadt * @(#)mfsnode.h 8.2 (Berkeley) 8/11/93 33df930be7Sderaadt */ 34df930be7Sderaadt 35df930be7Sderaadt /* 36df930be7Sderaadt * This structure defines the control data for the memory based file system. 37df930be7Sderaadt */ 38df930be7Sderaadt 39df930be7Sderaadt struct mfsnode { 40df930be7Sderaadt struct vnode *mfs_vnode; /* vnode associated with this mfsnode */ 412c7a7344Sjsing struct bufq mfs_bufq; /* bufq for MFS I/O */ 42df930be7Sderaadt caddr_t mfs_baseoff; /* base of file system in memory */ 43df930be7Sderaadt long mfs_size; /* size of memory file system */ 44*3b7181b7Sguenther pid_t mfs_tid; /* supporting thread's tid */ 45df930be7Sderaadt struct buf *mfs_buflist; /* list of I/O requests */ 462c7a7344Sjsing int mfs_shutdown; /* shutdown request */ 47df930be7Sderaadt }; 48df930be7Sderaadt 49df930be7Sderaadt /* 50df930be7Sderaadt * Convert between mfsnode pointers and vnode pointers 51df930be7Sderaadt */ 52df930be7Sderaadt #define VTOMFS(vp) ((struct mfsnode *)(vp)->v_data) 53df930be7Sderaadt #define MFSTOV(mfsp) ((mfsp)->mfs_vnode) 54