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