1typedef unsigned int __kernel_dev_t; 2typedef __kernel_dev_t dev_t; 3struct ustat { 4}; 5typedef unsigned int kdev_t; 6static 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} 13struct super_block { 14}; 15struct super_block * get_super (kdev_t dev); 16int sys_ustat(dev_t dev, struct ustat * ubuf) 17{ 18 struct super_block *s; 19 s = get_super(to_kdev_t(dev)); 20} 21