--- /dev/null
+/*
+ * Copyright (C) 2004, 2005, 2007, 2009 Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2001 Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: os.h,v 1.2 2009/06/10 00:55:02 each Exp $ */
+
+/*! \file */
+
+#ifndef RNDC_OS_H
+#define RNDC_OS_H 1
+
+#include <isc/lang.h>
+#include <stdio.h>
+
+ISC_LANG_BEGINDECLS
+
+int set_user(FILE *fd, const char *user);
+/*%<
+ * Set the owner of the file referenced by 'fd' to 'user'.
+ * Returns:
+ * 0 success
+ * -1 insufficient permissions, or 'user' does not exist.
+ */
+
+ISC_LANG_ENDDECLS
+
+#endif