-extern void *guestfs_safe_realloc (guestfs_h *g, void *ptr, int nbytes);
-extern char *guestfs_safe_strdup (guestfs_h *g, const char *str);
-extern void *guestfs_safe_memdup (guestfs_h *g, void *ptr, size_t size);
-extern int guestfs___set_busy (guestfs_h *g);
-extern int guestfs___end_busy (guestfs_h *g);
-extern int guestfs___send (guestfs_h *g, int proc_nr, xdrproc_t xdrp, char *args);
-extern int guestfs___recv (guestfs_h *g, const char *fn, struct guestfs_message_header *hdr, struct guestfs_message_error *err, xdrproc_t xdrp, char *ret);
-extern int guestfs___send_file (guestfs_h *g, const char *filename);
-extern int guestfs___recv_file (guestfs_h *g, const char *filename);