1 files changed, 43 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/mach/hurd/dirfd.c b/REORG.TODO/sysdeps/mach/hurd/dirfd.c
new file mode 100644
index 0000000000..0ad290d515
--- /dev/null
+++ b/REORG.TODO/sysdeps/mach/hurd/dirfd.c
@@ -0,0 +1,43 @@
+/* dirfd -- Return the file descriptor used by a DIR stream.  Hurd version.
+   Copyright (C) 1995-2017 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 <dirent.h>
+#include <dirstream.h>
+#include <hurd/fd.h>
+#include <errno.h>
+
+int
+dirfd (DIR *dirp)
+{
+  int fd;
+
+  HURD_CRITICAL_BEGIN;
+  __mutex_lock (&_hurd_dtable_lock);
+  for (fd = 0; fd < _hurd_dtablesize; ++fd)
+    if (_hurd_dtable[fd] == dirp->__fd)
+      break;
+  if (fd == _hurd_dtablesize)
+    {
+      errno = EINVAL;
+      fd = -1;
+    }
+  __mutex_unlock (&_hurd_dtable_lock);
+  HURD_CRITICAL_END;
+
+  return fd;
+}