OUTPUT:
RETVAL
+SV *
+du (g, path)
+ guestfs_h *g;
+ char *path;
+PREINIT:
+ int64_t sizekb;
+ CODE:
+ sizekb = guestfs_du (g, path);
+ if (sizekb == -1)
+ croak ("du: %s", guestfs_last_error (g));
+ RETVAL = my_newSVll (sizekb);
+ OUTPUT:
+ RETVAL
+