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layer_extern.h revision 1.17.12.4 
      1 /*	$NetBSD: layer_extern.h,v 1.17.12.4 2008/02/04 09:24:30 yamt 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 *);
    119