122 extern unsigned long __copy_tofrom_user(void __user *to,
126 static inline unsigned long __must_check __clear_user(void __user *to,  in __clear_user()  argument
139 		: "=r"(n), "=r"(to)			\  in __clear_user()
140 		: "0"(n), "1"(to)  in __clear_user()
145 static inline unsigned long __must_check clear_user(void __user *to,  in clear_user()  argument
149 	if (unlikely(!access_ok(VERIFY_WRITE, to, n)))  in clear_user()
152 	return __clear_user(to, n);  in clear_user()
365 #define __copy_from_user(to, from, n)	\  argument
366 	__copy_tofrom_user((__force void __user *)(to), \
368 #define __copy_from_user_inatomic(to, from, n) \  argument
369 		__copy_from_user((to), (from), (n))
371 static inline long copy_from_user(void *to,  in copy_from_user()  argument
376 		return __copy_from_user(to, from, n);  in copy_from_user()
380 #define __copy_to_user(to, from, n)	\  argument
381 		__copy_tofrom_user((void __user *)(to), \
383 #define __copy_to_user_inatomic(to, from, n) __copy_to_user((to), (from), (n))  argument
385 static inline long copy_to_user(void __user *to,  in copy_to_user()  argument
389 	if (access_ok(VERIFY_WRITE, to, n))  in copy_to_user()
390 		return __copy_to_user(to, from, n);  in copy_to_user()
397 extern int __strncpy_user(char *to, const char __user *from, int len);