1 /* $NetBSD: dkbad.c,v 1.3 2005/12/11 12:19:36 christos 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 1.3 2005/12/11 12:19:36 christos 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
46 int
isbad(struct dkbad * bt,int cyl,int trk,int sec)47 isbad(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