+extern void prep_error (prep_data *data, const char *filename, const char *fs, ...) __attribute__((noreturn, format (printf,3,4)));
+extern void free_prep_data (void *data);
+
+/* in prep_lv.c */
+extern int vg_lv_parse (const char *device, char **vg, char **lv);
+
+/* in progress.c */
+extern void reset_progress_bar (void);
+extern void progress_callback (guestfs_h *g, void *data, uint64_t event, int event_handle, int flags, const char *buf, size_t buf_len, const uint64_t *array, size_t array_len);