+int yaffs_start_up(void);
+int yaffsfs_GetLastError(void);
+
+/* Function to get the last error */
+int yaffs_get_error(void);
+const char * yaffs_error_to_str(int err);
+
+/* Function only for debugging */
+void * yaffs_getdev(const YCHAR *path);
+int yaffs_dump_dev(const YCHAR *path);
+int yaffs_set_error(int error);
+
+/* Trace control functions */
+unsigned yaffs_set_trace(unsigned tm);
+unsigned yaffs_get_trace(void);