xref: /illumos-gate/usr/src/cmd/sgs/libelf/common/getshstrndx.c (revision 8b80e8cb6855118d46f605e91b5ed4ce83417395)
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 /*
23  * Copyright 2002 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 #include <string.h>
30 #include <gelf.h>
31 #include <decl.h>
32 #include <msg.h>
33 
34 int
35 elf_getshstrndx(Elf *elf, size_t *shstrndx)
36 {
37 	GElf_Ehdr	ehdr;
38 	Elf_Scn		*scn;
39 	GElf_Shdr	shdr0;
40 
41 	if (gelf_getehdr(elf, &ehdr) == 0)
42 		return (0);
43 	if (ehdr.e_shstrndx != SHN_XINDEX) {
44 		*shstrndx = ehdr.e_shstrndx;
45 		return (1);
46 	}
47 	if ((scn = elf_getscn(elf, 0)) == 0)
48 		return (0);
49 	if (gelf_getshdr(scn, &shdr0) == 0)
50 		return (0);
51 	*shstrndx = shdr0.sh_link;
52 	return (1);
53 }
54