+/*
+ * The "unsafe" user accesses aren't really "unsafe", but the naming
+ * is a big fat warning: you have to not only do the access_ok()
+ * checking before using them, but you have to surround them with the
+ * user_access_begin/end() pair.
+ */
+#define user_access_begin() __uaccess_begin()
+#define user_access_end() __uaccess_end()
+
+#define unsafe_put_user(x, ptr) \
+({ \
+ int __pu_err; \
+ __put_user_size((x), (ptr), sizeof(*(ptr)), __pu_err, -EFAULT); \
+ __builtin_expect(__pu_err, 0); \
+})
+
+#define unsafe_get_user(x, ptr) \
+({ \
+ int __gu_err; \
+ unsigned long __gu_val; \
+ __get_user_size(__gu_val, (ptr), sizeof(*(ptr)), __gu_err, -EFAULT); \
+ (x) = (__force __typeof__(*(ptr)))__gu_val; \
+ __builtin_expect(__gu_err, 0); \
+})
+