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Annotation of sys/ufs/mfs/mfsnode.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: mfsnode.h,v 1.11 2003/09/23 16:51:13 millert Exp $    */
                      2: /*     $NetBSD: mfsnode.h,v 1.3 1996/02/09 22:31:31 christos Exp $     */
                      3:
                      4: /*
                      5:  * Copyright (c) 1989, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      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:  *     @(#)mfsnode.h   8.2 (Berkeley) 8/11/93
                     33:  */
                     34:
                     35: /*
                     36:  * This structure defines the control data for the memory based file system.
                     37:  */
                     38:
                     39: struct mfsnode {
                     40:        struct  vnode *mfs_vnode;       /* vnode associated with this mfsnode */
                     41:        caddr_t mfs_baseoff;            /* base of file system in memory */
                     42:        long    mfs_size;               /* size of memory file system */
                     43:        pid_t   mfs_pid;                /* supporting process pid */
                     44:        struct  buf *mfs_buflist;       /* list of I/O requests */
                     45:        long    mfs_spare[4];
                     46: };
                     47:
                     48: /*
                     49:  * Convert between mfsnode pointers and vnode pointers
                     50:  */
                     51: #define VTOMFS(vp)     ((struct mfsnode *)(vp)->v_data)
                     52: #define MFSTOV(mfsp)   ((mfsp)->mfs_vnode)
                     53:
                     54: /* Prototypes for MFS operations on vnodes. */
                     55: #define        mfs_lookup      mfs_badop
                     56: #define        mfs_create      mfs_badop
                     57: #define        mfs_mknod       mfs_badop
                     58: #define        mfs_access      mfs_badop
                     59: #define        mfs_getattr     mfs_badop
                     60: #define        mfs_setattr     mfs_badop
                     61: #define        mfs_read        mfs_badop
                     62: #define        mfs_write       mfs_badop
                     63: #define        mfs_poll        mfs_badop
                     64: #define        mfs_mmap        mfs_badop
                     65: #define        mfs_seek        mfs_badop
                     66: #define        mfs_remove      mfs_badop
                     67: #define        mfs_link        mfs_badop
                     68: #define        mfs_rename      mfs_badop
                     69: #define        mfs_mkdir       mfs_badop
                     70: #define        mfs_rmdir       mfs_badop
                     71: #define        mfs_symlink     mfs_badop
                     72: #define        mfs_readdir     mfs_badop
                     73: #define        mfs_readlink    mfs_badop
                     74: #define        mfs_abortop     mfs_badop
                     75: #define        mfs_lock        vop_generic_lock
                     76: #define        mfs_unlock      vop_generic_unlock
                     77: #define        mfs_islocked    vop_generic_islocked
                     78: #define        mfs_pathconf    mfs_badop
                     79: #define        mfs_advlock     mfs_badop
                     80: #define        mfs_blkatoff    mfs_badop
                     81: #define        mfs_valloc      mfs_badop
                     82: #define        mfs_vfree       mfs_badop
                     83: #define        mfs_truncate    mfs_badop
                     84: #define        mfs_update      nullop
                     85: #define        mfs_bwrite      vop_generic_bwrite