1 /* $NetBSD: dkbad.c,v 1.12 2009/03/14 21:04:03 dsl 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 #ifndef NOBADSECT 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: dkbad.c,v 1.12 2009/03/14 21:04:03 dsl Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/buf.h> 41 #include <sys/dkbad.h> 42 43 int isbad(struct dkbad *, int, int, int); 44 45 /* 46 * Search the bad sector table looking for 47 * the specified sector. Return index if found. 48 * Return -1 if not found. 49 */ 50 51 int 52 isbad(register struct dkbad *bt, int cyl, int trk, int sec) 53 { 54 register int i; 55 register long blk, bblk; 56 57 blk = ((long)cyl << 16) + (trk << 8) + sec; 58 for (i = 0; i < 126; i++) { 59 bblk = ((long)bt->bt_bad[i].bt_cyl << 16) + bt->bt_bad[i].bt_trksec; 60 if (blk == bblk) 61 return (i); 62 if (blk < bblk || bblk < 0) 63 break; 64 } 65 return (-1); 66 } 67 #endif 68