code: def atlasdb_get_zonefile_bits( zonefile_hash, con=None, path=None ):
      
      with AtlasDBOpen(con=con, path=path) as dbcon:
  
          sql = "SELECT inv_index FROM zonefiles WHERE zonefile_hash = ?;"
          args = (zonefile_hash,)
  
          cur = dbcon.cursor()
          res = atlasdb_query_execute( cur, sql, args )
  
          # NOTE: zero-indexed
          ret = []
          for r in res:
              ret.append( r['inv_index'] - 1 )
  
      return ret
docs: What bit(s) in a zonefile inventory does a zonefile hash correspond to?
      Return their indexes in the bit field.