/*      $NetBSD: libelf_shdr.c,v 1.5 2024/03/03 17:37:34 christos Exp $ */

/*-
* Copyright (c) 2006,2008 Joseph Koshy
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#include <sys/cdefs.h>

#include <gelf.h>
#include <libelf.h>

#include "_libelf.h"

__RCSID("$NetBSD: libelf_shdr.c,v 1.5 2024/03/03 17:37:34 christos Exp $");
ELFTC_VCSID("Id: libelf_shdr.c 3977 2022-05-01 06:45:34Z jkoshy");

void *
_libelf_getshdr(Elf_Scn *s, int ec)
{
       Elf *e;

       if (s == NULL || (e = s->s_elf) == NULL ||
           e->e_kind != ELF_K_ELF) {
               LIBELF_SET_ERROR(ARGUMENT, 0);
               return (NULL);
       }

       if (ec == ELFCLASSNONE)
               ec = e->e_class;

       if (ec != e->e_class) {
               LIBELF_SET_ERROR(CLASS, 0);
               return (NULL);
       }

       return ((void *) &s->s_shdr);
}