1 /*-
2 * Copyright (c) 2006,2008 Joseph Koshy
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <ar.h>
28 #include <libelf.h>
29
30 #include "_libelf.h"
31
32 ELFTC_VCSID("$Id: elf_shstrndx.c 3174 2015-03-27 17:13:41Z emaste $");
33
34 static int
_libelf_getshdrstrndx(Elf * e,size_t * strndx)35 _libelf_getshdrstrndx(Elf *e, size_t *strndx)
36 {
37 void *eh;
38 int ec;
39
40 if (e == NULL || e->e_kind != ELF_K_ELF ||
41 ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
42 LIBELF_SET_ERROR(ARGUMENT, 0);
43 return (-1);
44 }
45
46 if ((eh = _libelf_ehdr(e, ec, 0)) == NULL)
47 return (-1);
48
49 *strndx = e->e_u.e_elf.e_strndx;
50
51 return (0);
52 }
53
54 int
elf_getshdrstrndx(Elf * e,size_t * strndx)55 elf_getshdrstrndx(Elf *e, size_t *strndx)
56 {
57 return (_libelf_getshdrstrndx(e, strndx));
58 }
59
60 int
elf_getshstrndx(Elf * e,size_t * strndx)61 elf_getshstrndx(Elf *e, size_t *strndx) /* Deprecated API. */
62 {
63 return (_libelf_getshdrstrndx(e, strndx) >= 0);
64 }
65
66 int
elf_setshstrndx(Elf * e,size_t strndx)67 elf_setshstrndx(Elf *e, size_t strndx)
68 {
69 void *eh;
70 int ec;
71
72 if (e == NULL || e->e_kind != ELF_K_ELF ||
73 ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64) ||
74 ((eh = _libelf_ehdr(e, ec, 0)) == NULL)) {
75 LIBELF_SET_ERROR(ARGUMENT, 0);
76 return (0);
77 }
78
79 return (_libelf_setshstrndx(e, eh, ec, strndx));
80 }
81