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 2008 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*	Copyright (c) 1988 AT&T	*/
28/*	  All Rights Reserved  	*/
29
30#pragma ident	"@(#)getident.c	1.10	08/05/31 SMI"
31
32#include "libelf.h"
33#include "decl.h"
34
35
36char *
37elf_getident(Elf * elf, size_t * ptr)
38{
39	size_t	sz = 0;
40	char *	id = 0;
41
42	if (elf != 0) {
43		ELFRLOCK(elf)
44		if (elf->ed_identsz != 0) {
45			if ((elf->ed_vm == 0) || (elf->ed_status !=
46			    ES_COOKED)) {
47				/*
48				 * We need to upgrade to a Writers
49				 * lock
50				 */
51				ELFUNLOCK(elf)
52				ELFWLOCK(elf)
53				if ((_elf_cook(elf) == OK_YES) &&
54				    (_elf_vm(elf, (size_t)0,
55				    elf->ed_identsz) == OK_YES)) {
56					id = elf->ed_ident;
57					sz = elf->ed_identsz;
58				}
59			} else {
60				id = elf->ed_ident;
61				sz = elf->ed_identsz;
62			}
63		}
64		ELFUNLOCK(elf)
65	}
66	if (ptr != 0)
67		*ptr = sz;
68	return (id);
69}
70