xref: /illumos-gate/usr/src/cmd/fs.d/pcfs/fsck/inject.c (revision 7c478bd9)
1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright (c) 1999 by Sun Microsystems, Inc.
24*7c478bd9Sstevel@tonic-gate  * All rights reserved.
25*7c478bd9Sstevel@tonic-gate  */
26*7c478bd9Sstevel@tonic-gate 
27*7c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
28*7c478bd9Sstevel@tonic-gate 
29*7c478bd9Sstevel@tonic-gate /*
30*7c478bd9Sstevel@tonic-gate  * fsck_pcfs -- inject.c
31*7c478bd9Sstevel@tonic-gate  *	Debugging routine that will insert random errors into the reads,
32*7c478bd9Sstevel@tonic-gate  *	so that you'll actually end up with some bad clusters.
33*7c478bd9Sstevel@tonic-gate  */
34*7c478bd9Sstevel@tonic-gate 
35*7c478bd9Sstevel@tonic-gate #include <stdio.h>
36*7c478bd9Sstevel@tonic-gate #include <errno.h>
37*7c478bd9Sstevel@tonic-gate #include <sys/types.h>
38*7c478bd9Sstevel@tonic-gate 
39*7c478bd9Sstevel@tonic-gate extern ssize_t _read(int fildes, void *buf, size_t nbyte);
40*7c478bd9Sstevel@tonic-gate 
41*7c478bd9Sstevel@tonic-gate ssize_t
read(int fildes,void * buf,size_t nbyte)42*7c478bd9Sstevel@tonic-gate read(int fildes, void *buf, size_t nbyte)
43*7c478bd9Sstevel@tonic-gate {
44*7c478bd9Sstevel@tonic-gate 	static int count = 0;
45*7c478bd9Sstevel@tonic-gate 
46*7c478bd9Sstevel@tonic-gate 	if ((count++ >= 263 && count <= 267) ||
47*7c478bd9Sstevel@tonic-gate 	    (count >= 381 && count <= 385) ||
48*7c478bd9Sstevel@tonic-gate 	    (count >= 1014 && count <= 1019) ||
49*7c478bd9Sstevel@tonic-gate 	    (count >= 1119 && count <= 1123) ||
50*7c478bd9Sstevel@tonic-gate 	    (count >= 1888 && count <= 1892)) {
51*7c478bd9Sstevel@tonic-gate 		errno = EIO;
52*7c478bd9Sstevel@tonic-gate 		return (-1);
53*7c478bd9Sstevel@tonic-gate 	}
54*7c478bd9Sstevel@tonic-gate 	return (_read(fildes, buf, nbyte));
55*7c478bd9Sstevel@tonic-gate }
56