1 /* $NetBSD: dkbad.c,v 1.6 2002/03/15 05:55:37 gmcgarry Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1990, 1993 5 * The Regents of the University of California. 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)dkbad.c 8.2 (Berkeley) 1/12/94 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: dkbad.c,v 1.6 2002/03/15 05:55:37 gmcgarry Exp $"); 40 41 #ifndef NOBADSECT 42 #include <sys/param.h> 43 #include <sys/buf.h> 44 #include <sys/dkbad.h> 45 46 int isbad __P((struct dkbad *, int, int, int)); 47 48 /* 49 * Search the bad sector table looking for 50 * the specified sector. Return index if found. 51 * Return -1 if not found. 52 */ 53 54 int 55 isbad(bt, cyl, trk, sec) 56 struct dkbad *bt; 57 int cyl, trk, sec; 58 { 59 int i; 60 long blk, bblk; 61 62 blk = ((long)cyl << 16) + (trk << 8) + sec; 63 for (i = 0; i < 126; i++) { 64 bblk = ((long)bt->bt_bad[i].bt_cyl << 16) + bt->bt_bad[i].bt_trksec; 65 if (blk == bblk) 66 return (i); 67 if (blk < bblk || bblk < 0) 68 break; 69 } 70 return (-1); 71 } 72 #endif 73