1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright (c) 1999 by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27 /*
28 * fsck_pcfs -- inject.c
29 * Debugging routine that will insert random errors into the reads,
30 * so that you'll actually end up with some bad clusters.
31 */
32
33 #include <stdio.h>
34 #include <errno.h>
35 #include <sys/types.h>
36
37 extern ssize_t _read(int fildes, void *buf, size_t nbyte);
38
39 ssize_t
read(int fildes,void * buf,size_t nbyte)40 read(int fildes, void *buf, size_t nbyte)
41 {
42 static int count = 0;
43
44 if ((count++ >= 263 && count <= 267) ||
45 (count >= 381 && count <= 385) ||
46 (count >= 1014 && count <= 1019) ||
47 (count >= 1119 && count <= 1123) ||
48 (count >= 1888 && count <= 1892)) {
49 errno = EIO;
50 return (-1);
51 }
52 return (_read(fildes, buf, nbyte));
53 }
54