xref: /titanic_51/usr/src/cmd/fs.d/pcfs/fsck/inject.c (revision 7c478bd95313f5f23a4c958a745db2134aa03244)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 1999 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#pragma ident	"%Z%%M%	%I%	%E% SMI"

/*
 * fsck_pcfs -- inject.c
 *	Debugging routine that will insert random errors into the reads,
 *	so that you'll actually end up with some bad clusters.
 */

#include <stdio.h>
#include <errno.h>
#include <sys/types.h>

extern ssize_t _read(int fildes, void *buf, size_t nbyte);

ssize_t
read(int fildes, void *buf, size_t nbyte)
{
	static int count = 0;

	if ((count++ >= 263 && count <= 267) ||
	    (count >= 381 && count <= 385) ||
	    (count >= 1014 && count <= 1019) ||
	    (count >= 1119 && count <= 1123) ||
	    (count >= 1888 && count <= 1892)) {
		errno = EIO;
		return (-1);
	}
	return (_read(fildes, buf, nbyte));
}