FreeBSD/Linux Kernel Cross Reference
sys/fs/fuse/fuse_node.h

     /*
      * Copyright (c) 2007-2009 Google Inc. and Amit Singh
      * All rights reserved.
      * 
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions are
      * met:
      * 
      * * Redistributions of source code must retain the above copyright
     *   notice, this list of conditions and the following disclaimer.
     * * 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.
     * * Neither the name of Google Inc. 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 COPYRIGHT HOLDERS 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 COPYRIGHT
     * OWNER 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.
     * 
     * Copyright (C) 2005 Csaba Henk.
     * 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.
     * 
     * THIS SOFTWARE IS PROVIDED BY AUTHOR 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 AUTHOR 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.
     *
     * $FreeBSD$
     */
    
    #ifndef _FUSE_NODE_H_
    #define _FUSE_NODE_H_
    
    #include <sys/types.h>
    #include <sys/mutex.h>
    
    #include "fuse_file.h"
    
    #define FN_REVOKED           0x00000020
    #define FN_FLUSHINPROG       0x00000040
    #define FN_FLUSHWANT         0x00000080
    #define FN_SIZECHANGE        0x00000100
    #define FN_DIRECTIO          0x00000200
    
    struct fuse_vnode_data {
        /** self **/
        uint64_t   nid;
    
        /** parent **/
        /* XXXIP very likely to be stale, it's not updated in rename() */
        uint64_t   parent_nid;
    
        /** I/O **/
        struct     fuse_filehandle fufh[FUFH_MAXTYPE];
    
        /** flags **/
        uint32_t   flag;
    
        /** meta **/
        struct vattr      cached_attrs;
        off_t             filesize;
        uint64_t          nlookup;
        enum vtype        vtype;
    };
    
    #define VTOFUD(vp) \
        ((struct fuse_vnode_data *)((vp)->v_data))
    #define VTOI(vp)    (VTOFUD(vp)->nid)
    #define VTOVA(vp)   (&(VTOFUD(vp)->cached_attrs))
    #define VTOILLU(vp) ((uint64_t)(VTOFUD(vp) ? VTOI(vp) : 0))
    
    #define FUSE_NULL_ID 0
   
   extern struct vop_vector fuse_vnops;
   
   static __inline void
   fuse_vnode_setparent(struct vnode *vp, struct vnode *dvp)
   {
       if (dvp != NULL && vp->v_type == VDIR) {
           MPASS(dvp->v_type == VDIR);
           VTOFUD(vp)->parent_nid = VTOI(dvp);
       }
   }
   
   void fuse_vnode_destroy(struct vnode *vp);
   
   int fuse_vnode_get(struct mount         *mp,
                      uint64_t              nodeid,
                      struct vnode         *dvp,
                      struct vnode        **vpp,
                      struct componentname *cnp,
                      enum vtype            vtyp);
   
   void fuse_vnode_open(struct vnode *vp,
                        int32_t fuse_open_flags,
                        struct thread *td);
   
   void fuse_vnode_refreshsize(struct vnode *vp, struct ucred *cred);
   
   int fuse_vnode_savesize(struct vnode *vp, struct ucred *cred);
   
   int fuse_vnode_setsize(struct vnode *vp, off_t newsize);
   
   #endif /* _FUSE_NODE_H_ */

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