138451Smsmith/* $NetBSD: nullfs.c,v 1.1 1996/01/13 22:25:39 leo Exp $ */ 238451Smsmith 338451Smsmith/*- 438451Smsmith * Copyright (c) 1993 538451Smsmith * The Regents of the University of California. All rights reserved. 638451Smsmith * 738451Smsmith * This code is derived from software contributed to Berkeley by 838451Smsmith * The Mach Operating System project at Carnegie-Mellon University. 938451Smsmith * 1038451Smsmith * Redistribution and use in source and binary forms, with or without 1138451Smsmith * modification, are permitted provided that the following conditions 1238451Smsmith * are met: 1338451Smsmith * 1. Redistributions of source code must retain the above copyright 1438451Smsmith * notice, this list of conditions and the following disclaimer. 1538451Smsmith * 2. Redistributions in binary form must reproduce the above copyright 1638451Smsmith * notice, this list of conditions and the following disclaimer in the 1738451Smsmith * documentation and/or other materials provided with the distribution. 1838451Smsmith * 4. Neither the name of the University nor the names of its contributors 1938451Smsmith * may be used to endorse or promote products derived from this software 2038451Smsmith * without specific prior written permission. 2138451Smsmith * 2238451Smsmith * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2338451Smsmith * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2438451Smsmith * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2538451Smsmith * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2638451Smsmith * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2738451Smsmith * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2838451Smsmith * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2938451Smsmith * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3038451Smsmith * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3138451Smsmith * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3238451Smsmith * SUCH DAMAGE. 3338451Smsmith * 3438451Smsmith * @(#)open.c 8.1 (Berkeley) 6/11/93 3538451Smsmith * 3638451Smsmith * 3738451Smsmith * Copyright (c) 1989, 1990, 1991 Carnegie Mellon University 3838451Smsmith * All Rights Reserved. 3938451Smsmith * 4038451Smsmith * Author: Alessandro Forin 4138451Smsmith * 4238451Smsmith * Permission to use, copy, modify and distribute this software and its 4338451Smsmith * documentation is hereby granted, provided that both the copyright 4438451Smsmith * notice and this permission notice appear in all copies of the 4538451Smsmith * software, derivative works or modified versions, and any portions 4638451Smsmith * thereof, and that both notices appear in supporting documentation. 4738451Smsmith * 4838451Smsmith * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 4938451Smsmith * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 5038451Smsmith * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 5138451Smsmith * 5238451Smsmith * Carnegie Mellon requests users of this software to return to 5338451Smsmith * 5438451Smsmith * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 5538451Smsmith * School of Computer Science 5638451Smsmith * Carnegie Mellon University 5738451Smsmith * Pittsburgh PA 15213-3890 5838451Smsmith * 5938451Smsmith * any improvements or extensions that they make and grant Carnegie the 6038451Smsmith * rights to redistribute these changes. 6138451Smsmith */ 6238451Smsmith 6384221Sdillon#include <sys/cdefs.h> 6484221Sdillon__FBSDID("$FreeBSD$"); 6584221Sdillon 6638451Smsmith#include "stand.h" 6738451Smsmith 6838451Smsmith/* 6938451Smsmith * Null filesystem 7038451Smsmith */ 7139469Smsmithint null_open (const char *path, struct open_file *f) 7238451Smsmith{ 73124811Sjhb return EINVAL; 7438451Smsmith} 7538451Smsmith 7638451Smsmithint null_close(struct open_file *f) 7738451Smsmith{ 7838451Smsmith return 0; 7938451Smsmith} 8038451Smsmith 8155137Speterint null_read (struct open_file *f, void *buf, size_t size, size_t *resid) 8238451Smsmith{ 83124811Sjhb return EIO; 8438451Smsmith} 8538451Smsmith 8655137Speterint null_write (struct open_file *f, void *buf, size_t size, size_t *resid) 8738451Smsmith{ 88124811Sjhb return EIO; 8938451Smsmith} 9038451Smsmith 9138451Smsmithoff_t null_seek (struct open_file *f, off_t offset, int where) 9238451Smsmith{ 9338451Smsmith errno = EIO; 9438451Smsmith return -1; 9538451Smsmith} 9638451Smsmith 9738451Smsmithint null_stat (struct open_file *f, struct stat *sb) 9838451Smsmith{ 99124811Sjhb return EIO; 10038451Smsmith} 10159766Sjlemon 10259766Sjlemonint null_readdir(struct open_file *f, struct dirent *d) 10359766Sjlemon{ 104124811Sjhb return EIO; 10559766Sjlemon} 106