FreeBSD/Linux Kernel Cross Reference
sys/fs/filecorefs/filecore_node.h

     /*      $NetBSD: filecore_node.h,v 1.2 2003/08/07 16:31:38 agc Exp $    */
     
     /*-
      * Copyright (c) 1994 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.
     *
     *      filecore_node.h         1.1     1998/6/26
     */
    
    /*-
     * Copyright (c) 1998 Andrew McMurry
     *
     * 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. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the University of
     *      California, Berkeley and its contributors.
     * 4. 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.
     *
     *      filecore_node.h         1.1     1998/6/26
     */
    
    #include <miscfs/genfs/genfs_node.h>
    
    /*
     * In a future format, directories may be more than 2Gb in length,
     * however, in practice this seems unlikely. So, we define
     * the type doff_t as a long to keep down the cost of doing
     * lookup on a 32-bit machine. If you are porting to a 64-bit
     * architecture, you should make doff_t the same as off_t.
     */
    #define doff_t  long
    
    struct filecore_node {
            struct  genfs_node i_gnode;
            LIST_ENTRY(filecore_node) i_hash;
            struct  vnode *i_vnode; /* vnode associated with this inode */
            struct  vnode *i_devvp; /* vnode for block I/O */
            u_long  i_flag;         /* see below */
            dev_t   i_dev;          /* device where inode resides */
            ino_t   i_number;       /* the identity of the inode */
            daddr_t i_block;        /* the disc address of the file */
            ino_t   i_parent;       /* the ino of the file's parent */
    
            struct  filecore_mnt *i_mnt;    /* filesystem associated with this inode */
            struct  lockf *i_lockf; /* head of byte-level lock list */
            int     i_diroff;       /* offset in dir, where we found last entry */
    
            struct  filecore_direntry i_dirent; /* directory entry */
    };
    
    #define i_forw          i_chain[0]
    #define i_back          i_chain[1]
    #define i_size          i_dirent.len
   
   /* flags */
   #define IN_ACCESS       0x0020          /* inode access time to be updated */
   
   #define VTOI(vp) ((struct filecore_node *)(vp)->v_data)
   #define ITOV(ip) ((ip)->i_vnode)
   
   #define filecore_staleinode(ip) ((ip)->i_dirent.name[0]==0)
   
   /*
    * Prototypes for Filecore vnode operations
    */
   int     filecore_lookup         __P((void *));
   #define filecore_open           genfs_nullop
   #define filecore_close          genfs_nullop
   int     filecore_access         __P((void *));
   int     filecore_getattr        __P((void *));
   int     filecore_read           __P((void *));
   #define filecore_poll           genfs_poll
   #define filecore_mmap           genfs_mmap
   #define filecore_seek           genfs_seek
   int     filecore_readdir        __P((void *));
   int     filecore_readlink       __P((void *));
   #define filecore_abortop        genfs_abortop
   int     filecore_inactive       __P((void *));
   int     filecore_reclaim        __P((void *));
   int     filecore_link           __P((void *));
   int     filecore_symlink        __P((void *));
   int     filecore_bmap           __P((void *));
   int     filecore_strategy       __P((void *));
   int     filecore_print          __P((void *));
   int     filecore_pathconf       __P((void *));
   int     filecore_blkatoff       __P((void *));
   
   struct  vnode *filecore_ihashget __P((dev_t, ino_t));
   void    filecore_ihashins __P((struct filecore_node *));
   void    filecore_ihashrem __P((struct filecore_node *));
   
   mode_t  filecore_mode   __P((struct filecore_node *));
   struct timespec filecore_time   __P((struct filecore_node *));
   ino_t   filecore_getparent      __P((struct filecore_node *));
   int     filecore_fn2unix        __P((char *, char *, u_int8_t *));
   int     filecore_fncmp          __P((const char *, const char *, u_short));
   int     filecore_dbread         __P((struct filecore_node *, struct buf **));

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