4.3BSD - /usr/src/sys/vax/dkbad.c

   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

Defined functions