72 						      unsigned long n)  in __clear_user()  argument
83 		: "=r" (n), "=r" (to)  in __clear_user()
84 		: "0" (n), "1" (to)  in __clear_user()
87 	return n;  in __clear_user()
91 						    unsigned long n)  in clear_user()  argument
93 	if (!access_ok(VERIFY_WRITE, to, n))  in clear_user()
94 		return n;  in clear_user()
95 	return __clear_user(to, n);  in clear_user()
99 				unsigned long n);
100 extern long __copy_to_user(void __user *to, const void *from, unsigned long n);
103 				unsigned long n)  in copy_from_user()  argument
105 	if (!access_ok(VERIFY_READ, from, n))  in copy_from_user()
106 		return n;  in copy_from_user()
107 	return __copy_from_user(to, from, n);  in copy_from_user()
111 				unsigned long n)  in copy_to_user()  argument
113 	if (!access_ok(VERIFY_WRITE, to, n))  in copy_to_user()
114 		return n;  in copy_to_user()
115 	return __copy_to_user(to, from, n);  in copy_to_user()
120 extern long strnlen_user(const char __user *s, long n);