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
33 size_t
elf_rand(Elf * elf,size_t off)34 elf_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 */
59 size_t
_elf_getnextoff(Elf * elf)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