/* $NetBSD: mfsnode.h,v 1.21 2008/03/26 14:19:43 ad Exp $ */ /* * Copyright (c) 1989, 1993 * The Regents of the University of California. 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. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. * * @(#)mfsnode.h 8.3 (Berkeley) 5/19/95 */ #ifndef _UFS_MFS_MFSNODE_H_ #define _UFS_MFS_MFSNODE_H_ /* * This structure defines the control data for the memory based file system. */ struct mfsnode { struct vnode *mfs_vnode; /* vnode associated with this mfsnode */ void *mfs_baseoff; /* base of file system in memory */ long mfs_size; /* size of memory file system */ struct proc *mfs_proc; /* supporting process */ int mfs_shutdown; /* shutdown this mfsnode */ #if defined(_KERNEL) kcondvar_t mfs_cv; /* notifier */ int mfs_refcnt; /* number of references */ struct bufq_state *mfs_buflist;/* list of I/O requests */ #endif /* defined(_KERNEL) */ }; #if defined(_KERNEL) /* * Convert between mfsnode pointers and vnode pointers */ #define VTOMFS(vp) ((struct mfsnode *)(vp)->v_data) #define MFSTOV(mfsp) ((mfsp)->mfs_vnode) /* Prototypes for MFS operations on vnodes. */ #define mfs_lookup genfs_badop #define mfs_create genfs_badop #define mfs_mknod genfs_badop #define mfs_access genfs_badop #define mfs_getattr genfs_badop #define mfs_setattr genfs_badop #define mfs_read genfs_badop #define mfs_write genfs_badop #define mfs_poll genfs_badop #define mfs_mmap genfs_badop #define mfs_seek genfs_badop #define mfs_remove genfs_badop #define mfs_link genfs_badop #define mfs_rename genfs_badop #define mfs_mkdir genfs_badop #define mfs_rmdir genfs_badop #define mfs_symlink genfs_badop #define mfs_readdir genfs_badop #define mfs_readlink genfs_badop #define mfs_abortop genfs_badop #define mfs_islocked genfs_noislocked #define mfs_pathconf genfs_badop #define mfs_advlock genfs_badop #define mfs_bwrite vn_bwrite #define mfs_revoke genfs_revoke #define mfs_putpages genfs_null_putpages #endif /* defined(_KERNEL) */ #endif /* !_UFS_MFS_MFSNODE_H_ */ |