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 "libelf.h"
30#include "decl.h"
31#include "msg.h"
32
33size_t
34elf_rand(Elf * elf, size_t off)
35{
36	if (elf == 0)
37		return (0);
38	ELFWLOCK(elf)
39	if (elf->ed_kind != ELF_K_AR) {
40		_elf_seterr(EREQ_AR, 0);
41		ELFUNLOCK(elf)
42		return (0);
43	}
44	if ((off == 0) || (elf->ed_fsz < off)) {
45		_elf_seterr(EREQ_RAND, 0);
46		ELFUNLOCK(elf)
47		return (0);
48	}
49	elf->ed_nextoff = off;
50	ELFUNLOCK(elf)
51	return (off);
52}
53
54/*
55 * Private function used to obtain the current value of the next
56 * offset field for an archive header. Returns 0 for error, and
57 * the offset otherwise.
58 */
59size_t
60_elf_getnextoff(Elf *elf)
61{
62	size_t	off;
63
64	if (elf == NULL)
65		return (0);
66	ELFWLOCK(elf)
67	if (elf->ed_kind != ELF_K_AR) {
68		_elf_seterr(EREQ_AR, 0);
69		ELFUNLOCK(elf)
70		return (0);
71	}
72	off = elf->ed_nextoff;
73	ELFUNLOCK(elf)
74	return (off);
75
76}
77