external/bsd/am-utils/dist/amd/amfs_error.c

   1 /*      $NetBSD$        */
   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 }