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Annotation of 43BSD/sys/vax/dkbad.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1982, 1986 Regents of the University of California.
                      3:  * All rights reserved.  The Berkeley software License Agreement
                      4:  * specifies the terms and conditions for redistribution.
                      5:  *
                      6:  *     @(#)dkbad.c     7.1 (Berkeley) 6/5/86
                      7:  */
                      8: 
                      9: #ifndef NOBADSECT
                     10: #include "param.h"
                     11: #include "buf.h"
                     12: #include "dkbad.h"
                     13: 
                     14: /*
                     15:  * Search the bad sector table looking for
                     16:  * the specified sector.  Return index if found.
                     17:  * Return -1 if not found.
                     18:  */
                     19: 
                     20: isbad(bt, cyl, trk, sec)
                     21:        register struct dkbad *bt;
                     22: {
                     23:        register int i;
                     24:        register long blk, bblk;
                     25: 
                     26:        blk = ((long)cyl << 16) + (trk << 8) + sec;
                     27:        for (i = 0; i < 126; i++) {
                     28:                bblk = ((long)bt->bt_bad[i].bt_cyl << 16) + bt->bt_bad[i].bt_trksec;
                     29:                if (blk == bblk)
                     30:                        return (i);
                     31:                if (blk < bblk || bblk < 0)
                     32:                        break;
                     33:        }
                     34:        return (-1);
                     35: }
                     36: #endif

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