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 * 91 amfs_error_match(am_opts *fo) 92 { 93 return xstrdup("(error-hook)"); 94 } 95 96 97 static int 98 amfs_error_mount(am_node *am, mntfs *mf) 99 { 100 return ENOENT; 101 } 102 103 104 static int 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 * 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 * 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 146 amfs_error_readdir(am_node *mp, voidp cookie, voidp dp, voidp ep, u_int count) 147 { 148 return ESTALE; 149 } 150