1/*	$NetBSD: dkbad.c,v 1.1.14.3 2004/09/21 13:23:57 skrll Exp $	*/
2/*-
3 * Copyright (c) 1982, 1986 The Regents of the University of California.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the University nor the names of its contributors
15 *    may be used to endorse or promote products derived from this software
16 *    without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 *	@(#)dkbad.c	7.3 (Berkeley) 5/9/91
31 */
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: dkbad.c,v 1.1.14.3 2004/09/21 13:23:57 skrll Exp $");
34
35#ifndef NOBADSECT
36#include <sys/param.h>
37#include <sys/buf.h>
38#include <sys/dkbad.h>
39
40/*
41 * Search the bad sector table looking for
42 * the specified sector.  Return index if found.
43 * Return -1 if not found.
44 */
45
46int
47isbad(struct dkbad *bt, int cyl, int trk, int sec)
48{
49	int i;
50	long blk, bblk;
51
52	blk = ((long)cyl << 16) + (trk << 8) + sec;
53	for (i = 0; i < 126; i++) {
54		bblk = ((long)bt->bt_bad[i].bt_cyl << 16) +
55		    bt->bt_bad[i].bt_trksec;
56		if (blk == bblk)
57			return (i);
58		if (blk < bblk || bblk < 0)
59			break;
60	}
61	return (-1);
62}
63#endif
64