1  typedef unsigned int	__kernel_dev_t;
       2  typedef __kernel_dev_t		dev_t;
       3  struct ustat {
       4  };
       5  typedef unsigned int kdev_t;
       6  static inline kdev_t to_kdev_t(int dev)
       7  {
       8  	int major, minor;
       9  	major = (dev >> 8);
      10  	minor = (dev & 0xff);
      11  	return ((( major ) << 22 ) | (  minor )) ;
      12  }
      13  struct super_block {
      14  };
      15  struct super_block * get_super (kdev_t dev);
      16  int sys_ustat(dev_t dev, struct ustat * ubuf)
      17  {
      18          struct super_block *s;
      19          s = get_super(to_kdev_t(dev));
      20  }