1  long sys_reboot(int magic1, int magic2, int cmd, void * arg)
       2  {
       3    switch (cmd) {
       4    case 0x89ABCDEF:
       5      return 1;
       6  
       7    case 0x00000000:
       8      return 2;
       9  
      10    case 0xCDEF0123:
      11      return 3;
      12  
      13    case 0x4321FEDC:
      14      return 4;
      15  
      16    case 0xA1B2C3D4:
      17      return 5;
      18  
      19    default:
      20      return 0;
      21    };
      22  }