80 		const void __user * from, unsigned long n)  in __copy_from_user()  argument
82 	if (__builtin_constant_p(n)) {  in __copy_from_user()
83 		switch(n) {  in __copy_from_user()
103 	memcpy(to, (const void __force *)from, n);  in __copy_from_user()
110 		const void *from, unsigned long n)  in __copy_to_user()  argument
112 	if (__builtin_constant_p(n)) {  in __copy_to_user()
113 		switch(n) {  in __copy_to_user()
133 	memcpy((void __force *)to, from, n);  in __copy_to_user()
239 	size_t n = __copy_from_user(x, ptr, size);  in __get_user_fn()  local
240 	if (unlikely(n)) {  in __get_user_fn()
241 		memset(x + (size - n), 0, n);  in __get_user_fn()
262 		const void __user * from, unsigned long n)  in copy_from_user()  argument
264 	unsigned long res = n;  in copy_from_user()
266 	if (likely(access_ok(VERIFY_READ, from, n)))  in copy_from_user()
267 		res = __copy_from_user(to, from, n);  in copy_from_user()
269 		memset(to + (n - res), 0, res);  in copy_from_user()
274 		const void *from, unsigned long n)  in copy_to_user()  argument
277 	if (access_ok(VERIFY_WRITE, to, n))  in copy_to_user()
278 		return __copy_to_user(to, from, n);  in copy_to_user()
280 		return n;  in copy_to_user()
312 #define __strnlen_user(s, n) (strnlen((s), (n)) + 1)  argument
320 static inline long strnlen_user(const char __user *src, long n)  in strnlen_user()  argument
324 	return __strnlen_user(src, n);  in strnlen_user()
337 __clear_user(void __user *to, unsigned long n)  in __clear_user()  argument
339 	memset((void __force *)to, 0, n);  in __clear_user()
345 clear_user(void __user *to, unsigned long n)  in clear_user()  argument
348 	if (!access_ok(VERIFY_WRITE, to, n))  in clear_user()
349 		return n;  in clear_user()
351 	return __clear_user(to, n);  in clear_user()