1 /* $NetBSD: elf_shstrndx.c,v 1.5 2024/03/03 17:37:33 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2006,2008 Joseph Koshy
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30
31 #include <ar.h>
32 #include <libelf.h>
33
34 #include "_libelf.h"
35
36 __RCSID("$NetBSD: elf_shstrndx.c,v 1.5 2024/03/03 17:37:33 christos Exp $");
37
38 static int
_libelf_getshdrstrndx(Elf * e,size_t * strndx)39 _libelf_getshdrstrndx(Elf *e, size_t *strndx)
40 {
41 void *eh;
42 int ec;
43
44 if (e == NULL || e->e_kind != ELF_K_ELF ||
45 ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
46 LIBELF_SET_ERROR(ARGUMENT, 0);
47 return (-1);
48 }
49
50 if ((eh = _libelf_ehdr(e, ec, 0)) == NULL)
51 return (-1);
52
53 *strndx = e->e_u.e_elf.e_strndx;
54
55 return (0);
56 }
57
58 int
elf_getshdrstrndx(Elf * e,size_t * strndx)59 elf_getshdrstrndx(Elf *e, size_t *strndx)
60 {
61 return (_libelf_getshdrstrndx(e, strndx));
62 }
63
64 int
elf_getshstrndx(Elf * e,size_t * strndx)65 elf_getshstrndx(Elf *e, size_t *strndx) /* Deprecated API. */
66 {
67 return (_libelf_getshdrstrndx(e, strndx) >= 0);
68 }
69
70 int
elf_setshstrndx(Elf * e,size_t strndx)71 elf_setshstrndx(Elf *e, size_t strndx)
72 {
73 void *eh;
74 int ec;
75
76 if (e == NULL || e->e_kind != ELF_K_ELF ||
77 ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64) ||
78 ((eh = _libelf_ehdr(e, ec, 0)) == NULL)) {
79 LIBELF_SET_ERROR(ARGUMENT, 0);
80 return (0);
81 }
82
83 return (_libelf_setshstrndx(e, eh, ec, strndx));
84 }
85