extern char *guestfs_df (guestfs_h *handle);
extern char *guestfs_df_h (guestfs_h *handle);
extern int64_t guestfs_du (guestfs_h *handle, const char *path);
extern char *guestfs_df (guestfs_h *handle);
extern char *guestfs_df_h (guestfs_h *handle);
extern int64_t guestfs_du (guestfs_h *handle, const char *path);