libelf_shdr.c revision 261246 
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 <sys/cdefs.h>
28
29#include <gelf.h>
30#include <libelf.h>
31
32#include "_libelf.h"
33
34ELFTC_VCSID("$Id: libelf_shdr.c 2225 2011-11-26 18:55:54Z jkoshy $");
35
36void *
37_libelf_getshdr(Elf_Scn *s, int ec)
38{
39	Elf *e;
40
41	if (s == NULL || (e = s->s_elf) == NULL ||
42	    e->e_kind != ELF_K_ELF) {
43		LIBELF_SET_ERROR(ARGUMENT, 0);
44		return (NULL);
45	}
46
47	if (ec == ELFCLASSNONE)
48		ec = e->e_class;
49
50	if (ec != e->e_class) {
51		LIBELF_SET_ERROR(CLASS, 0);
52		return (NULL);
53	}
54
55	return ((void *) &s->s_shdr);
56}
57