Consolidate definitions of _FORTIFY_SOURCE wrappers for open{,64}{,at}.

1 files changed, 29 insertions, 0 deletions

diff --git a/io/openat_2.c b/io/openat_2.c
new file mode 100644
index 0000000000..b423f1dc6b
--- /dev/null
+++ b/io/openat_2.c
@@ -0,0 +1,29 @@
+/* _FORTIFY_SOURCE wrapper for openat.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fcntl.h>
+#include <stdio.h>
+
+int
+__openat_2 (int fd, const char *file, int oflag)
+{
+  if (oflag & O_CREAT)
+    __fortify_fail ("invalid openat call: O_CREAT without mode");
+
+  return __openat (fd, file, oflag);
+}