1 /* $NetBSD: dkbad.c,v 1.9 2002/01/28 09:56:46 aymeric 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. 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 7.2 (Berkeley) 12/16/90 36 */ 37 38 #ifndef NOBADSECT 39 40 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: dkbad.c,v 1.9 2002/01/28 09:56:46 aymeric Exp $"); 42 43 #include <sys/param.h> 44 #include <sys/buf.h> 45 #include <sys/dkbad.h> 46 47 int isbad(struct dkbad *, int, int, int); 48 49 /* 50 * Search the bad sector table looking for 51 * the specified sector. Return index if found. 52 * Return -1 if not found. 53 */ 54 55 int 56 isbad(bt, cyl, trk, sec) 57 register struct dkbad *bt; 58 int cyl, trk, sec; 59 { 60 register int i; 61 register long blk, bblk; 62 63 blk = ((long)cyl << 16) + (trk << 8) + sec; 64 for (i = 0; i < 126; i++) { 65 bblk = ((long)bt->bt_bad[i].bt_cyl << 16) + bt->bt_bad[i].bt_trksec; 66 if (blk == bblk) 67 return (i); 68 if (blk < bblk || bblk < 0) 69 break; 70 } 71 return (-1); 72 } 73 #endif 74