BSD 4_1_snap development

[unix-history] / sys / dev / dkleave.c

/*      dkleave.c       4.2     81/03/08        */

#ifdef INTRLVE
#include "../h/param.h"
#include "../h/buf.h"

daddr_t
dkblock(bp)
register struct buf *bp;
{
       register int dminor;

       if (((dminor=minor(bp->b_dev))&0100) == 0)
               return(bp->b_blkno);
       dminor >>= 3;
       dminor &= 07;
       dminor++;
       return(bp->b_blkno/dminor);
}

dkunit(bp)
register struct buf *bp;
{
       register int dminor;

       dminor = minor(bp->b_dev) >> 3;
       if ((dminor&010) == 0)
               return(dminor);
       dminor &= 07;
       dminor++;
       return(bp->b_blkno%dminor);
}
#endif