1 /* $NetBSD: amfs_error.c,v 1.1.1.3 2015/01/17 16:34:15 christos Exp $ */
2
3 /*
4 * Copyright (c) 1997-2014 Erez Zadok
5 * Copyright (c) 1989 Jan-Simon Pendry
6 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
7 * Copyright (c) 1989 The Regents of the University of California.
8 * All rights reserved.
9 *
10 * This code is derived from software contributed to Berkeley by
11 * Jan-Simon Pendry at Imperial College, London.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 *
38 * File: am-utils/amd/amfs_error.c
39 *
40 */
41
42 /*
43 * Error file system.
44 * This is used as a last resort catchall if
45 * nothing else worked. EFS just returns lots
46 * of error codes, except for unmount which
47 * always works of course.
48 */
49
50 #ifdef HAVE_CONFIG_H
51 # include <config.h>
52 #endif /* HAVE_CONFIG_H */
53 #include <am_defs.h>
54 #include <amd.h>
55
56 static char *amfs_error_match(am_opts *fo);
57 static int amfs_error_mount(am_node *am, mntfs *mf);
58 static int amfs_error_umount(am_node *am, mntfs *mf);
59
60
61 /*
62 * Ops structure
63 */
64 am_ops amfs_error_ops =
65 {
66 "error",
67 amfs_error_match,
68 0, /* amfs_error_init */
69 amfs_error_mount,
70 amfs_error_umount,
71 amfs_error_lookup_child,
72 amfs_error_mount_child,
73 amfs_error_readdir,
74 0, /* amfs_error_readlink */
75 0, /* amfs_error_mounted */
76 0, /* amfs_error_umounted */
77 amfs_generic_find_srvr,
78 0, /* amfs_error_get_wchan */
79 FS_DISCARD, /* nfs_fs_flags */
80 #ifdef HAVE_FS_AUTOFS
81 AUTOFS_ERROR_FS_FLAGS,
82 #endif /* HAVE_FS_AUTOFS */
83 };
84
85
86
87 /*
88 * EFS file system always matches
89 */
90 static char *
amfs_error_match(am_opts * fo)91 amfs_error_match(am_opts *fo)
92 {
93 return xstrdup("(error-hook)");
94 }
95
96
97 static int
amfs_error_mount(am_node * am,mntfs * mf)98 amfs_error_mount(am_node *am, mntfs *mf)
99 {
100 return ENOENT;
101 }
102
103
104 static int
amfs_error_umount(am_node * am,mntfs * mf)105 amfs_error_umount(am_node *am, mntfs *mf)
106 {
107 /*
108 * Always succeed
109 */
110 return 0;
111 }
112
113
114 /*
115 * EFS interface to RPC lookup() routine.
116 * Should never get here in the automounter.
117 * If we do then just give an error.
118 */
119 am_node *
amfs_error_lookup_child(am_node * mp,char * fname,int * error_return,int op)120 amfs_error_lookup_child(am_node *mp, char *fname, int *error_return, int op)
121 {
122 *error_return = ESTALE;
123 return 0;
124 }
125
126
127 /*
128 * EFS interface to RPC lookup() routine.
129 * Should never get here in the automounter.
130 * If we do then just give an error.
131 */
132 am_node *
amfs_error_mount_child(am_node * ap,int * error_return)133 amfs_error_mount_child(am_node *ap, int *error_return)
134 {
135 *error_return = ESTALE;
136 return 0;
137 }
138
139
140 /*
141 * EFS interface to RPC readdir() routine.
142 * Should never get here in the automounter.
143 * If we do then just give an error.
144 */
145 int
amfs_error_readdir(am_node * mp,voidp cookie,voidp dp,voidp ep,u_int count)146 amfs_error_readdir(am_node *mp, voidp cookie, voidp dp, voidp ep, u_int count)
147 {
148 return ESTALE;
149 }
150