153 lines
4.0 KiB
C
153 lines
4.0 KiB
C
/* $NetBSD: amfs_error.c,v 1.1.1.4 2001/05/13 17:50:12 veego Exp $ */
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/*
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* Copyright (c) 1997-2001 Erez Zadok
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* Copyright (c) 1989 Jan-Simon Pendry
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* Copyright (c) 1989 Imperial College of Science, Technology & Medicine
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* Copyright (c) 1989 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry at Imperial College, London.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgment:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* %W% (Berkeley) %G%
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*
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* Id: amfs_error.c,v 1.3.2.2 2001/01/12 23:28:56 ro Exp
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*
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*/
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/*
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* Error file system.
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* This is used as a last resort catchall if
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* nothing else worked. EFS just returns lots
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* of error codes, except for unmount which
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* always works of course.
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif /* HAVE_CONFIG_H */
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#include <am_defs.h>
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#include <amd.h>
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static char *amfs_error_match(am_opts *fo);
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static int amfs_error_fmount(mntfs *mf);
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static int amfs_error_fumount(mntfs *mf);
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static void amfs_error_umounted(am_node *mp);
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/*
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* Ops structure
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*/
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am_ops amfs_error_ops =
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{
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"error",
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amfs_error_match,
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0, /* amfs_error_init */
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amfs_auto_fmount,
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amfs_error_fmount,
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amfs_auto_fumount,
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amfs_error_fumount,
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amfs_error_lookuppn,
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amfs_error_readdir,
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0, /* amfs_error_readlink */
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0, /* amfs_error_mounted */
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amfs_error_umounted,
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find_amfs_auto_srvr,
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FS_DISCARD
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};
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/*
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* EFS file system always matches
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*/
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static char *
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amfs_error_match(am_opts *fo)
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{
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return strdup("(error-hook)");
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}
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static int
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amfs_error_fmount(mntfs *mf)
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{
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return ENOENT;
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}
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static int
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amfs_error_fumount(mntfs *mf)
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{
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/*
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* Always succeed
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*/
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return 0;
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}
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/*
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* EFS interface to RPC lookup() routine.
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* Should never get here in the automounter.
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* If we do then just give an error.
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*/
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am_node *
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amfs_error_lookuppn(am_node *mp, char *fname, int *error_return, int op)
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{
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*error_return = ESTALE;
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return 0;
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}
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/*
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* EFS interface to RPC readdir() routine.
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* Should never get here in the automounter.
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* If we do then just give an error.
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*/
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int
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amfs_error_readdir(am_node *mp, nfscookie cookie, nfsdirlist *dp, nfsentry *ep, int count)
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{
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return ESTALE;
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}
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/*
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* umounted() callback for EFS.
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*
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* This prevents core-dumps on callbacks to error file-systems from
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* nfsx_fumount.
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*/
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static void
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amfs_error_umounted(am_node *mp)
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{
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/* nothing to do */
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}
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