sys/miscfs/genfs/layer_extern.h

   1 /*      $NetBSD: layer_extern.h,v 1.23 2007/11/26 19:02:13 pooka Exp $  */
   2
   3 /*
   4  * Copyright (c) 1999 National Aeronautics & Space Administration
   5  * All rights reserved.
   6  *
   7  * This software was written by William Studenmund of the
   8  * Numerical Aerospace Simulation Facility, NASA Ames Research Center.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the National Aeronautics & Space Administration
  19  *    nor the names of its contributors may be used to endorse or promote
  20  *    products derived from this software without specific prior written
  21  *    permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE NATIONAL AERONAUTICS & SPACE ADMINISTRATION
  24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE ADMINISTRATION OR CONTRIB-
  27  * UTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
  28  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  33  * POSSIBILITY OF SUCH DAMAGE.
  34  */
  35 /*
  36  * Copyright (c) 1992, 1993, 1995
  37  *      The Regents of the University of California.  All rights reserved.
  38  *
  39  * This code is derived from software donated to Berkeley by
  40  * Jan-Simon Pendry.
  41  *
  42  * Redistribution and use in source and binary forms, with or without
  43  * modification, are permitted provided that the following conditions
  44  * are met:
  45  * 1. Redistributions of source code must retain the above copyright
  46  *    notice, this list of conditions and the following disclaimer.
  47  * 2. Redistributions in binary form must reproduce the above copyright
  48  *    notice, this list of conditions and the following disclaimer in the
  49  *    documentation and/or other materials provided with the distribution.
  50  * 3. Neither the name of the University nor the names of its contributors
  51  *    may be used to endorse or promote products derived from this software
  52  *    without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  55  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  56  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  57  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  58  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  59  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  60  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  61  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  62  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  63  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  64  * SUCH DAMAGE.
  65  *
  66  */
  67
  68 /*
  69  * Routines defined by layerfs
  70  */
  71
  72 /* misc routines in layer_subr.c */
  73 void    layerfs_init(void);
  74 void    layerfs_done(void);
  75 int     layer_node_alloc(struct mount *, struct vnode *, struct vnode **);
  76 int     layer_node_create(struct mount *, struct vnode *, struct vnode **);
  77 struct vnode *
  78         layer_node_find(struct mount *, struct vnode *);
  79 #define LOG2_SIZEVNODE  7               /* log2(sizeof struct vnode) */
  80 #define LAYER_NHASH(lmp, vp) \
  81         (&((lmp)->layerm_node_hashtbl[(((u_long)vp)>>LOG2_SIZEVNODE) & \
  82                 (lmp)->layerm_node_hash]))
  83
  84 /* vfs routines */
  85 int     layerfs_start(struct mount *, int);
  86 int     layerfs_root(struct mount *, struct vnode **);
  87 int     layerfs_quotactl(struct mount *, int, uid_t, void *);
  88 int     layerfs_statvfs(struct mount *, struct statvfs *);
  89 int     layerfs_sync(struct mount *, int, struct kauth_cred *);
  90 int     layerfs_vget(struct mount *, ino_t, struct vnode **);
  91 int     layerfs_fhtovp(struct mount *, struct fid *, struct vnode **);
  92 int     layerfs_vptofh(struct vnode *, struct fid *, size_t *);
  93 int     layerfs_snapshot(struct mount *, struct vnode *,
  94                             struct timespec *);
  95 int     layerfs_renamelock_enter(struct mount *);
  96 void    layerfs_renamelock_exit(struct mount *);
  97
  98 /* VOP routines */
  99 int     layer_bypass(void *);
 100 int     layer_getattr(void *);
 101 int     layer_inactive(void *);
 102 int     layer_reclaim(void *);
 103 int     layer_print(void *);
 104 int     layer_bwrite(void *);
 105 int     layer_bmap(void *);
 106 int     layer_lock(void *);
 107 int     layer_unlock(void *);
 108 int     layer_islocked(void *);
 109 int     layer_fsync(void *);
 110 int     layer_lookup(void *);
 111 int     layer_setattr(void *);
 112 int     layer_access(void *);
 113 int     layer_open(void *);
 114 int     layer_remove(void *);
 115 int     layer_rename(void *);
 116 int     layer_rmdir(void *);
 117 int     layer_getpages(void *);
 118 int     layer_putpages(void *);