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Annotation of 43BSDReno/sys/hp300/dkbad.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution is only permitted until one year after the first shipment
        !             6:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
        !             7:  * binary forms are permitted provided that: (1) source distributions retain
        !             8:  * this entire copyright notice and comment, and (2) distributions including
        !             9:  * binaries display the following acknowledgement:  This product includes
        !            10:  * software developed by the University of California, Berkeley and its
        !            11:  * contributors'' in the documentation or other materials provided with the
        !            12:  * distribution and in all advertising materials mentioning features or use
        !            13:  * of this software.  Neither the name of the University nor the names of
        !            14:  * its contributors may be used to endorse or promote products derived from
        !            15:  * this software without specific prior written permission.
        !            16:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            17:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            18:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            19:  *
        !            20:  *     @(#)dkbad.c     7.1 (Berkeley) 5/8/90
        !            21:  */
        !            22: 
        !            23: #ifndef NOBADSECT
        !            24: #include "param.h"
        !            25: #include "buf.h"
        !            26: #include "dkbad.h"
        !            27: 
        !            28: /*
        !            29:  * Search the bad sector table looking for
        !            30:  * the specified sector.  Return index if found.
        !            31:  * Return -1 if not found.
        !            32:  */
        !            33: 
        !            34: isbad(bt, cyl, trk, sec)
        !            35:        register struct dkbad *bt;
        !            36: {
        !            37:        register int i;
        !            38:        register long blk, bblk;
        !            39: 
        !            40:        blk = ((long)cyl << 16) + (trk << 8) + sec;
        !            41:        for (i = 0; i < 126; i++) {
        !            42:                bblk = ((long)bt->bt_bad[i].bt_cyl << 16) + bt->bt_bad[i].bt_trksec;
        !            43:                if (blk == bblk)
        !            44:                        return (i);
        !            45:                if (blk < bblk || bblk < 0)
        !            46:                        break;
        !            47:        }
        !            48:        return (-1);
        !            49: }
        !            50: #endif

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