/* * 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) 1991,1997-1998 by Sun Microsystems, Inc. * All rights reserved. */ #ifndef _SYS_DKBAD_H #define _SYS_DKBAD_H #pragma ident "%Z%%M% %I% %E% SMI" /* UCB 4.3 81/05/10 */ #ifdef __cplusplus extern "C" { #endif /* * Definitions needed to perform bad sector * revectoring ala DEC STD 144. * * The bad sector information is located in the * first 5 even numbered sectors of the last * track of the disk pack. There are five * identical copies of the information, described * by the dkbad structure. * * Replacement sectors are allocated starting with * the first sector before the bad sector information * and working backwards towards the beginning of * the disk. A maximum of 126 bad sectors are supported. * The position of the bad sector in the bad sector table * determines which replacement sector it corresponds to. * * The bad sector information and replacement sectors * are conventionally only accessible through the * 'c' file system partition of the disk. If that * partition is used for a file system, the user is * responsible for making sure that it does not overlap * the bad sector information or any replacement sector.s */ #define NDKBAD 126 /* # of entries maximum */ struct dkbad { long bt_csn; /* cartridge serial number */ ushort_t bt_mbz; /* unused; should be 0 */ ushort_t bt_flag; /* -1 => alignment cartridge */ struct bt_bad { short bt_cyl; /* cylinder number of bad sector */ short bt_trksec; /* track and sector number */ } bt_bad[NDKBAD]; }; #ifdef __cplusplus } #endif #endif /* _SYS_DKBAD_H */