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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright (c) 1990, 2010, Oracle and/or its affiliates. All rights reserved.
24 */
25
26/*	Copyright (c) 1988 AT&T	*/
27/*	  All Rights Reserved  	*/
28
29#include <ar.h>
30#include "libelf.h"
31#include "decl.h"
32
33
34off_t
35elf_getbase(Elf *elf)
36{
37	off_t	rc;
38	if (elf == NULL)
39		return (-1);
40	ELFRLOCK(elf)
41	rc = elf->ed_baseoff;
42	ELFUNLOCK(elf)
43	return (rc);
44}
45
46/*
47 * Private function to obtain the offset of the archive header for
48 * this archive member. The header directly precedes the base offset,
49 * which is available via elf_getbase(), but we wish to isolate the
50 * caller from implementation details that might change.
51 *
52 * Returns the offset on success, and -1 on failure.
53 */
54off_t
55_elf_getarhdrbase(Elf *elf)
56{
57	off_t	rc;
58	if (elf == NULL)
59		return (-1);
60	ELFRLOCK(elf)
61	if (elf->ed_parent == NULL) {
62		_elf_seterr(EREQ_AR, 0);
63		ELFUNLOCK(elf);
64		return (-1);
65	}
66	rc = elf->ed_baseoff - sizeof (struct ar_hdr);
67	ELFUNLOCK(elf)
68	return (rc);
69}
70