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 | |
97 | int (**null_vnodeop_p)(void *); |
98 | |
99 | const 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 | |
125 | const struct vnodeopv_desc null_vnodeop_opv_desc = { |
126 | &null_vnodeop_p, null_vnodeop_entries |
127 | }; |
128 | |