1 files changed, 79 insertions, 0 deletions
diff --git a/REORG.TODO/io/openat.c b/REORG.TODO/io/openat.c
new file mode 100644
index 0000000000..529f418da2
--- /dev/null
+++ b/REORG.TODO/io/openat.c
@@ -0,0 +1,79 @@
+/* Copyright (C) 2005-2017 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 <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <kernel-features.h>
+
+/* Some mostly-generic code (e.g. sysdeps/posix/getcwd.c) uses this variable
+   if __ASSUME_ATFCTS is not defined.  */
+#ifndef __ASSUME_ATFCTS
+int __have_atfcts;
+#endif
+
+/* Open FILE with access OFLAG.  Interpret relative paths relative to
+   the directory associated with FD.  If O_CREAT or O_TMPFILE is in OFLAG, a
+   third argument is the file protection.  */
+int
+__openat (int fd, const char *file, int oflag, ...)
+{
+  int mode;
+
+  if (file == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd != AT_FDCWD && file[0] != '/')
+    {
+      /* Check FD is associated with a directory.  */
+      struct stat64 st;
+      if (__fxstat64 (_STAT_VER, fd, &st) != 0)
+	return -1;
+
+      if (!S_ISDIR (st.st_mode))
+	{
+	  __set_errno (ENOTDIR);
+	  return -1;
+	}
+    }
+
+  if (__OPEN_NEEDS_MODE (oflag))
+    {
+      va_list arg;
+      va_start (arg, oflag);
+      mode = va_arg (arg, int);
+      va_end (arg);
+
+      ignore_value (mode);
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__openat)
+weak_alias (__openat, openat)
+stub_warning (openat)
+
+/* __openat_2 is a generic wrapper that calls __openat.
+   So give a stub warning for that symbol too.  */
+stub_warning (__openat_2)