Index: test/arch/um/os-Linux/aio.c
===================================================================
--- test.orig/arch/um/os-Linux/aio.c	2005-09-27 12:03:00.000000000 -0400
+++ test/arch/um/os-Linux/aio.c	2005-09-27 12:03:29.000000000 -0400
@@ -274,6 +274,7 @@
         err = os_write_file(aio_req_fd_w, &aio, sizeof(aio));
         if(err == sizeof(aio))
                 err = 0;
+	else err = -errno;
 
         return err;
 }