1 /* $NetBSD: amfs_error.c,v 1.1.1.2 2009/03/20 20:26:48 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1997-2009 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. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgment: 23 * This product includes software developed by the University of 24 * California, Berkeley and its contributors. 25 * 4. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * 42 * File: am-utils/amd/amfs_error.c 43 * 44 */ 45 46 /* 47 * Error file system. 48 * This is used as a last resort catchall if 49 * nothing else worked. EFS just returns lots 50 * of error codes, except for unmount which 51 * always works of course. 52 */ 53 54 #ifdef HAVE_CONFIG_H 55 # include <config.h> 56 #endif /* HAVE_CONFIG_H */ 57 #include <am_defs.h> 58 #include <amd.h> 59 60 static char *amfs_error_match(am_opts *fo); 61 static int amfs_error_mount(am_node *am, mntfs *mf); 62 static int amfs_error_umount(am_node *am, mntfs *mf); 63 64 65 /* 66 * Ops structure 67 */ 68 am_ops amfs_error_ops = 69 { 70 "error", 71 amfs_error_match, 72 0, /* amfs_error_init */ 73 amfs_error_mount, 74 amfs_error_umount, 75 amfs_error_lookup_child, 76 amfs_error_mount_child, 77 amfs_error_readdir, 78 0, /* amfs_error_readlink */ 79 0, /* amfs_error_mounted */ 80 0, /* amfs_error_umounted */ 81 amfs_generic_find_srvr, 82 0, /* amfs_error_get_wchan */ 83 FS_DISCARD, /* nfs_fs_flags */ 84 #ifdef HAVE_FS_AUTOFS 85 AUTOFS_ERROR_FS_FLAGS, 86 #endif /* HAVE_FS_AUTOFS */ 87 }; 88 89 90 91 /* 92 * EFS file system always matches 93 */ 94 static char * 95 amfs_error_match(am_opts *fo) 96 { 97 return strdup("(error-hook)"); 98 } 99 100 101 static int 102 amfs_error_mount(am_node *am, mntfs *mf) 103 { 104 return ENOENT; 105 } 106 107 108 static int 109 amfs_error_umount(am_node *am, mntfs *mf) 110 { 111 /* 112 * Always succeed 113 */ 114 return 0; 115 } 116 117 118 /* 119 * EFS interface to RPC lookup() routine. 120 * Should never get here in the automounter. 121 * If we do then just give an error. 122 */ 123 am_node * 124 amfs_error_lookup_child(am_node *mp, char *fname, int *error_return, int op) 125 { 126 *error_return = ESTALE; 127 return 0; 128 } 129 130 131 /* 132 * EFS interface to RPC lookup() routine. 133 * Should never get here in the automounter. 134 * If we do then just give an error. 135 */ 136 am_node * 137 amfs_error_mount_child(am_node *ap, int *error_return) 138 { 139 *error_return = ESTALE; 140 return 0; 141 } 142 143 144 /* 145 * EFS interface to RPC readdir() routine. 146 * Should never get here in the automounter. 147 * If we do then just give an error. 148 */ 149 int 150 amfs_error_readdir(am_node *mp, nfscookie cookie, nfsdirlist *dp, nfsentry *ep, u_int count) 151 { 152 return ESTALE; 153 } 154