1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 *	Copyright (c) 1994, by Sun Microsytems, Inc.
24 */
25
26#pragma	ident	"%Z%%M%	%I%	%E% SMI"
27
28#include "libtnf.h"
29
30/*
31 * Check a record datum
32 */
33
34void
35_tnf_check_record(tnf_datum_t datum)
36{
37	CHECK_DATUM(datum);
38
39	/* All records must be tagged */
40	if (!INFO_TAGGED(DATUM_INFO(datum)))
41		_tnf_error(DATUM_TNF(datum), TNF_ERR_TYPEMISMATCH);
42}
43
44/*
45 * Retrieve the tag arg, encoded in low 16 bits of tag word
46 */
47
48tnf_datum_t
49tnf_get_tag_arg(tnf_datum_t datum)
50{
51	TNF		*tnf;
52	tnf_ref32_t	*arg;
53
54	CHECK_RECORD(datum);
55
56	tnf = DATUM_TNF(datum);
57
58	/* Should not give an error if not found */
59	/* LINTED pointer cast may result in improper alignment */
60	arg = _tnf_get_tag_arg(tnf, DATUM_RECORD(datum));
61
62	if (arg == TNF_NULL)
63		return (TNF_DATUM_NULL);
64	else			/* repackage the tag arg with its taginfo */
65		return (RECORD_DATUM(tnf, arg));
66}
67