1/*	$NetBSD: dkbad.c,v 1.11 2005/12/11 12:16:26 christos 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 1.11 2005/12/11 12:16:26 christos Exp $");
38
39#include <sys/param.h>
40#include <sys/buf.h>
41#include <sys/dkbad.h>
42
43int 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
51int
52isbad(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