8 unsigned long _copy_from_user(void *to, const void __user *from, unsigned long n)  in _copy_from_user()  argument
12 	if (likely(access_ok(from, n))) {  in _copy_from_user()
14 		res = raw_copy_from_user(to, from, n);  in _copy_from_user()
24 unsigned long _copy_to_user(void __user *to, const void *from, unsigned long n)  in _copy_to_user()  argument
28 		kasan_check_read(from, n);  in _copy_to_user()
29 		n = raw_copy_to_user(to, from, n);  in _copy_to_user()
50 int check_zeroed_user(const void __user *from, size_t size)  in check_zeroed_user()  argument
53 	uintptr_t align = (uintptr_t) from % sizeof(unsigned long);  in check_zeroed_user()
58 	from -= align;  in check_zeroed_user()
61 	if (!user_access_begin(from, size))  in check_zeroed_user()
64 	unsafe_get_user(val, (unsigned long __user *) from, err_fault);  in check_zeroed_user()
72 		from += sizeof(unsigned long);  in check_zeroed_user()
75 		unsafe_get_user(val, (unsigned long __user *) from, err_fault);  in check_zeroed_user()