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