FreeBSD/Linux Kernel Cross Reference
sys/sys/vfscache.h

     /*
      * Copyright (c) 2004 The DragonFly Project.  All rights reserved.
      *
      * This code is derived from software contributed to The DragonFly Project
      * by Matthew Dillon <dillon@backplane.com>
      * 
      * 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 DragonFly Project 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 HOLDERS 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) 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. 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.
     *
     * $DragonFly: src/sys/sys/vfscache.h,v 1.12 2007/11/02 19:52:24 dillon Exp $
     */
    /*
     * This module serves as a focal point for virtually all filesystem and
     * device related calls.  It is or will be responsible for all high level
     * kernel management for filesystem and device operations, including but
     * limited to:
     *
     *      Function                        Status
     *      ----------------                -----
     *      Journaling                      TODO
     *      Range Locking                   TODO
     *      Cache Coherency                 TODO
     *      VNode Operations Dispatch       TODO
     *      Mount Point Operations          TODO
     *      FileOps Operations              TODO
     */
    
    #ifndef _SYS_VFSCACHE_H_
    #define _SYS_VFSCACHE_H_
    
    #ifndef _SYS_TYPES_H_
    #include <sys/types.h>
    #endif
    #ifndef _SYS_TIME_H_
    #include <sys/time.h>
    #endif
    #ifndef _SYS_VFSOPS_H_
    #include <sys/vfsops.h>
    #endif
    #ifndef _SYS_UUID_H_
    #include <sys/uuid.h>
    #endif
    
   /*
    * Vnode types.  VNON means no type or transitory type.  VINT is used
    * for internal types.  Note that VNON is skipped by the vnode scan.
    */
   enum vtype      { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD,
                     VDATABASE, VINT };
   
   /*
    * Vnode tag types.
    * These are for the benefit of external programs only (e.g., pstat)
    * and should NEVER be inspected by the kernel.
    */
   enum vtagtype   {
           VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_PC, VT_LFS, VT_LOFS, VT_FDESC,
           VT_PORTAL, VT_NULL, VT_UNUSED10, VT_KERNFS, VT_PROCFS, VT_AFS,
           VT_ISOFS, VT_UNION, VT_MSDOSFS, VT_TFS, VT_VFS, VT_CODA, VT_NTFS,
           VT_HPFS, VT_NWFS, VT_SMBFS, VT_UDF, VT_EXT2FS, VT_SYNTH,
           VT_HAMMER, VT_HAMMER2, VT_DEVFS, VT_TMPFS
   };
   
   /*
    * Vnode attributes.  A field value of VNOVAL represents a field whose value
    * is unavailable (getattr) or which is not to be changed (setattr).
    *
    * Some vattr fields may be wider then what is reported to userland.
    */
   struct vattr {
           enum vtype      va_type;        /* vnode type (for create) */
           u_int64_t       va_nlink;       /* number of references to file */
           u_short         va_mode;        /* files access mode and type */
           uid_t           va_uid;         /* owner user id */
           gid_t           va_gid;         /* owner group id */
           udev_t          va_fsid;        /* file system id */
           ino_t           va_fileid;      /* file id */
           u_quad_t        va_size;        /* file size in bytes */
           long            va_blocksize;   /* blocksize preferred for i/o */
           struct timespec va_atime;       /* time of last access */
           struct timespec va_mtime;       /* time of last modification */
           struct timespec va_ctime;       /* time file changed */
           u_int64_t       va_gen;         /* generation number of file */
           u_long          va_flags;       /* flags defined for file */
           int             va_rmajor;      /* device the special file represents */
           int             va_rminor;
           u_quad_t        va_bytes;       /* bytes of disk space held by file */
           u_quad_t        va_filerev;     /* file modification number */
           u_int           va_vaflags;     /* operations flags, see below */
           long            va_spare;       /* remain quad aligned */
           int64_t         va_unused01;
           uuid_t          va_uid_uuid;    /* native uuids if available */
           uuid_t          va_gid_uuid;
           uuid_t          va_fsid_uuid;
   };
   
   /*
    * Flags for va_vaflags.
    *
    * NOTE: The short versions for the uid, gid, and fsid are always populated
    * even when the uuid versions are available.
    */
   #define VA_UTIMES_NULL          0x0001  /* utimes argument was NULL */
   #define VA_EXCLUSIVE            0x0002  /* exclusive create request */
   #define VA_UID_UUID_VALID       0x0004  /* uuid fields also populated */
   #define VA_GID_UUID_VALID       0x0008  /* uuid fields also populated */
   #define VA_FSID_UUID_VALID      0x0010  /* uuid fields also populated */
   
   #endif
   

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