NetBSD/dist/am-utils/amd/amfs_error.c

153 lines
4.0 KiB
C

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