--- linuxUm/include/asm-um/unistd.h.notfixed	2003-09-17 13:30:42.000000000 +0200
+++ linuxUm/include/asm-um/unistd.h	2003-09-17 19:15:58.000000000 +0200
@@ -33,7 +33,11 @@
 	set_fs(KERNEL_DS);			\
 	ret = sys(args);			\
 	set_fs(fs);				\
-	return ret;
+	if (ret < 0) {				\
+	  errno = -ret;				\
+	  return -1;				\
+	}					\
+	return 0;
 
 static inline long open(const char *pathname, int flags, int mode) 
 {