usr/src/cmd/fs.d/pcfs/fsck/inject.c

   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 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 /*
  30  * fsck_pcfs -- inject.c
  31  *      Debugging routine that will insert random errors into the reads,
  32  *      so that you'll actually end up with some bad clusters.
  33  */
  34
  35 #include <stdio.h>
  36 #include <errno.h>
  37 #include <sys/types.h>
  38
  39 extern ssize_t _read(int fildes, void *buf, size_t nbyte);
  40
  41 ssize_t
  42 read(int fildes, void *buf, size_t nbyte)
  43 {
  44         static int count = 0;
  45
  46         if ((count++ >= 263 && count <= 267) ||
  47             (count >= 381 && count <= 385) ||
  48             (count >= 1014 && count <= 1019) ||
  49             (count >= 1119 && count <= 1123) ||
  50             (count >= 1888 && count <= 1892)) {
  51                 errno = EIO;
  52                 return (-1);
  53         }
  54         return (_read(fildes, buf, nbyte));
  55 }