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diff --git a/io/ftw.h b/io/ftw.h
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+/* Copyright (C) 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ian Lance Taylor (ian@airs.com).
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+/*
+ *	SVID ftw.h
+ */
+
+#ifndef _FTW_H
+
+#define	_FTW_H	1
+#include <features.h>
+
+#include <statbuf.h>
+
+/* The FLAG argument to the user function passed to ftw.  */
+#define FTW_F	0		/* Regular file.  */
+#define FTW_D	1		/* Directory.  */
+#define FTW_DNR	2		/* Unreadable directory.  */
+#define FTW_NS	3		/* Unstatable file.  */
+
+/* Call a function on every element in a directory tree.  */
+extern int ftw __P ((__const char *__dir,
+		     int (*__func) (__const char *__file,
+				    struct stat *__status,
+				    int __flag),
+		     int __descriptors));
+
+#endif	/* ftw.h */