openat/openat02.c: add a new case to test flags

create a new case to test flags for openat(2):
O_APPEND
O_CLOEXEC
O_LARGEFILE
O_NOATIME
O_NOFOLLOW
O_TRUNC

Signed-off-by: Xing Gu <gux.fnst@cn.fujitsu.com>
Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
diff --git a/m4/ltp-openat.m4 b/m4/ltp-openat.m4
new file mode 100644
index 0000000..aa3b0a3
--- /dev/null
+++ b/m4/ltp-openat.m4
@@ -0,0 +1,25 @@
+dnl
+dnl Copyright (c) Linux Test Project, 2014
+dnl
+dnl This program is free software;  you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 2 of the License, or
+dnl (at your option) any later version.
+dnl
+dnl This program is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY;  without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+dnl the GNU General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program;  if not, write to the Free Software
+dnl Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+dnl
+
+dnl
+dnl LTP_CHECK_OPENAT
+dnl ----------------------------
+dnl
+AC_DEFUN([LTP_CHECK_OPENAT],[
+AC_CHECK_FUNCS(openat,,)
+])