return __copy_user(to, (__force void __user *) from, n);
}
-extern void copy_from_user_overflow(void)
-#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
- __compiletime_error("copy_from_user() buffer size is not provably correct")
-#else
- __compiletime_warning("copy_from_user() buffer size is not provably correct")
-#endif
-;
-
static inline unsigned long copy_from_user(void *to, const void __user *from, unsigned long n)
{
- int sz = __compiletime_object_size(to);
-
- if (unlikely(sz != -1 && sz < n)) {
- copy_from_user_overflow();
- return n;
- }
-
if (n && __access_ok((unsigned long) from, n))
return __copy_user((__force void __user *) to, from, n);
else