1/* $NetBSD: null_vnops.c,v 1.39 2014/02/27 16:51:38 hannken 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/*
37 * Copyright (c) 1992, 1993
38 * The Regents of the University of California. All rights reserved.
39 *
40 * This code is derived from software contributed to Berkeley by
41 * John Heidemann of the UCLA Ficus project.
42 *
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
45 * are met:
46 * 1. Redistributions of source code must retain the above copyright
47 * notice, this list of conditions and the following disclaimer.
48 * 2. Redistributions in binary form must reproduce the above copyright
49 * notice, this list of conditions and the following disclaimer in the
50 * documentation and/or other materials provided with the distribution.
51 * 3. Neither the name of the University nor the names of its contributors
52 * may be used to endorse or promote products derived from this software
53 * without specific prior written permission.
54 *
55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
65 * SUCH DAMAGE.
66 *
67 * @(#)null_vnops.c 8.6 (Berkeley) 5/27/95
68 *
69 * Ancestors:
70 * @(#)lofs_vnops.c 1.2 (Berkeley) 6/18/92
71 * Id: lofs_vnops.c,v 1.11 1992/05/30 10:05:43 jsp Exp jsp
72 * ...and...
73 * @(#)null_vnodeops.c 1.20 92/07/07 UCLA Ficus project
74 */
75
76/*
77 * Null file-system.
78 *
79 * Implemented using layerfs, see layer_vnops.c for a description.
80 */
81
82#include <sys/cdefs.h>
83__KERNEL_RCSID(0, "$NetBSD: null_vnops.c,v 1.39 2014/02/27 16:51:38 hannken Exp $");
84
85#include <sys/param.h>
86#include <sys/systm.h>
87#include <sys/vnode.h>
88
89#include <miscfs/genfs/genfs.h>
90#include <miscfs/genfs/layer_extern.h>
91#include <miscfs/nullfs/null.h>
92
93/*
94 * Global VFS data structures.
95 */
96
97int (**null_vnodeop_p)(void *);
98
99const struct vnodeopv_entry_desc null_vnodeop_entries[] = {
100 { &vop_default_desc, layer_bypass },
101
102 { &vop_lookup_desc, layer_lookup },
103 { &vop_setattr_desc, layer_setattr },
104 { &vop_getattr_desc, layer_getattr },
105 { &vop_access_desc, layer_access },
106 { &vop_fsync_desc, layer_fsync },
107 { &vop_inactive_desc, layer_inactive },
108 { &vop_reclaim_desc, layer_reclaim },
109 { &vop_lock_desc, layer_lock },
110 { &vop_print_desc, layer_print },
111 { &vop_remove_desc, layer_remove },
112 { &vop_rename_desc, layer_rename },
113 { &vop_revoke_desc, layer_revoke },
114 { &vop_rmdir_desc, layer_rmdir },
115
116 { &vop_open_desc, layer_open }, /* mount option handling */
117
118 { &vop_bmap_desc, layer_bmap },
119 { &vop_getpages_desc, layer_getpages },
120 { &vop_putpages_desc, layer_putpages },
121
122 { NULL, NULL }
123};
124
125const struct vnodeopv_desc null_vnodeop_opv_desc = {
126 &null_vnodeop_p, null_vnodeop_entries
127};
128