1 /* $NetBSD: dkbad.c,v 1.8 2009/03/14 21:04:06 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 #include <sys/cdefs.h>
35 __KERNEL_RCSID(0, "$NetBSD: dkbad.c,v 1.8 2009/03/14 21:04:06 dsl Exp $");
36
37 #ifndef NOBADSECT
38 #include <sys/param.h>
39 #include <sys/buf.h>
40 #include <sys/dkbad.h>
41
42 int isbad(struct dkbad *, int, int, int);
43
44 /*
45 * Search the bad sector table looking for
46 * the specified sector. Return index if found.
47 * Return -1 if not found.
48 */
49
50 int
isbad(register struct dkbad * bt,int cyl,int trk,int sec)51 isbad(register struct dkbad *bt, int cyl, int trk, int sec)
52 {
53 register int i;
54 register long blk, bblk;
55
56 blk = ((long)cyl << 16) + (trk << 8) + sec;
57 for (i = 0; i < 126; i++) {
58 bblk = ((long)bt->bt_bad[i].bt_cyl << 16) + bt->bt_bad[i].bt_trksec;
59 if (blk == bblk)
60 return (i);
61 if (blk < bblk || bblk < 0)
62 break;
63 }
64 return (-1);
65 }
66 #endif
67