1/* $NetBSD: dkbad.c,v 1.7 2009/03/05 13:21:44 tsutsui Exp $ */ 2 3/* 4 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)dkbad.c 7.2 (Berkeley) 12/16/90 32 */ 33 34#include <sys/cdefs.h> 35__KERNEL_RCSID(0, "$NetBSD: dkbad.c,v 1.7 2009/03/05 13:21:44 tsutsui Exp $"); 36 37#ifndef NOBADSECT 38#include <sys/param.h> 39#include <sys/buf.h> 40#include <sys/dkbad.h> 41 42int isbad(struct dkbad *, int, int, int); 43 44/* 45 * Search the bad sector table looking for 46 * the specified sector. Return index if found. 47 * Return -1 if not found. 48 */ 49 50int 51isbad(register struct dkbad *bt, int cyl, int trk, int sec) 52{ 53 register int i; 54 register long blk, bblk; 55 56 blk = ((long)cyl << 16) + (trk << 8) + sec; 57 for (i = 0; i < 126; i++) { 58 bblk = ((long)bt->bt_bad[i].bt_cyl << 16) + bt->bt_bad[i].bt_trksec; 59 if (blk == bblk) 60 return (i); 61 if (blk < bblk || bblk < 0) 62 break; 63 } 64 return (-1); 65} 66#endif 67