xref: /titanic_52/usr/src/cmd/sgs/libelf/common/rand.c (revision fd845fc0cb4fbc8e85f974e2e4eaacca1cc26e81)
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 /*	Copyright (c) 1988 AT&T	*/
23 /*	  All Rights Reserved  	*/
24 
25 
26 /*
27  * Copyright (c) 1998 by Sun Microsystems, Inc.
28  * All rights reserved.
29  */
30 
31 #pragma ident	"%Z%%M%	%I%	%E% SMI" 	/* SVr4.0 1.2	*/
32 
33 #pragma weak	elf_rand = _elf_rand
34 
35 
36 #include "syn.h"
37 #include "libelf.h"
38 #include "decl.h"
39 #include "msg.h"
40 
41 size_t
42 elf_rand(Elf * elf, size_t off)
43 {
44 	if (elf == 0)
45 		return (0);
46 	ELFWLOCK(elf)
47 	if (elf->ed_kind != ELF_K_AR) {
48 		_elf_seterr(EREQ_AR, 0);
49 		ELFUNLOCK(elf)
50 		return (0);
51 	}
52 	if ((off == 0) || (elf->ed_fsz < off)) {
53 		_elf_seterr(EREQ_RAND, 0);
54 		ELFUNLOCK(elf)
55 		return (0);
56 	}
57 	elf->ed_nextoff = off;
58 	ELFUNLOCK(elf)
59 	return (off);
60 }
61