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 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #include <string.h>
27 #include <gelf.h>
28 #include <decl.h>
29 #include <msg.h>
30
31 /*
32 * Return section header array string table index, taking
33 * extended headers into account.
34 *
35 * elf_getshstrndx() returns 0 for failure, and 1 for success.
36 *
37 * elf_getshdrstrndx() supercedes elf_getshstrndx(), which is now considered
38 * obsolete. It returns -1 for failure and 0 for success, bringing us into
39 * alignment with the interface agreed to in the 2002 gABI meeting.
40 *
41 * See the comment in getshnum.c for additional information.
42 */
43
44 int
elf_getshdrstrndx(Elf * elf,size_t * shstrndx)45 elf_getshdrstrndx(Elf *elf, size_t *shstrndx)
46 {
47 GElf_Ehdr ehdr;
48 Elf_Scn *scn;
49 GElf_Shdr shdr0;
50
51 if (gelf_getehdr(elf, &ehdr) == 0)
52 return (-1);
53 if (ehdr.e_shstrndx != SHN_XINDEX) {
54 *shstrndx = ehdr.e_shstrndx;
55 return (0);
56 }
57 if ((scn = elf_getscn(elf, 0)) == 0)
58 return (-1);
59 if (gelf_getshdr(scn, &shdr0) == 0)
60 return (-1);
61 *shstrndx = shdr0.sh_link;
62 return (0);
63 }
64
65 int
elf_getshstrndx(Elf * elf,size_t * shstrndx)66 elf_getshstrndx(Elf *elf, size_t *shstrndx)
67 {
68 return (elf_getshdrstrndx(elf, shstrndx) == 0);
69 }
70