Make complete getcwd work in rtld

sysdeps/unix/sysv/linux/dl-openat64.c

@@ -0,0 +1,40 @@
+/* Copyright (C) 2011 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@gmain.com>, 2003.
+
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sysdep.h>
+
+
+int
+openat64 (dfd, file, oflag)
+     int dfd;
+     const char *file;
+     int oflag;
+{
+  assert ((oflag & O_CREAT) == 0);
+
+#ifdef __NR_openat
+  return INLINE_SYSCALL (openat, 3, dfd, file, oflag | O_LARGEFILE);
+#else
+  __set_errno (ENOSYS);
+  return -1;
+#endif
+}