libelf_shdr.c revision 1.5 
1/*	$NetBSD: libelf_shdr.c,v 1.5 2024/03/03 17:37:34 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 <gelf.h>
32#include <libelf.h>
33
34#include "_libelf.h"
35
36__RCSID("$NetBSD: libelf_shdr.c,v 1.5 2024/03/03 17:37:34 christos Exp $");
37ELFTC_VCSID("Id: libelf_shdr.c 3977 2022-05-01 06:45:34Z jkoshy");
38
39void *
40_libelf_getshdr(Elf_Scn *s, int ec)
41{
42	Elf *e;
43
44	if (s == NULL || (e = s->s_elf) == NULL ||
45	    e->e_kind != ELF_K_ELF) {
46		LIBELF_SET_ERROR(ARGUMENT, 0);
47		return (NULL);
48	}
49
50	if (ec == ELFCLASSNONE)
51		ec = e->e_class;
52
53	if (ec != e->e_class) {
54		LIBELF_SET_ERROR(CLASS, 0);
55		return (NULL);
56	}
57
58	return ((void *) &s->s_shdr);
59}
60