/*      $NetBSD: elf_shstrndx.c,v 1.5 2024/03/03 17:37:33 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 <ar.h>
#include <libelf.h>

#include "_libelf.h"

__RCSID("$NetBSD: elf_shstrndx.c,v 1.5 2024/03/03 17:37:33 christos Exp $");

static int
_libelf_getshdrstrndx(Elf *e, size_t *strndx)
{
       void *eh;
       int ec;

       if (e == NULL || e->e_kind != ELF_K_ELF ||
           ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
               LIBELF_SET_ERROR(ARGUMENT, 0);
               return (-1);
       }

       if ((eh = _libelf_ehdr(e, ec, 0)) == NULL)
               return (-1);

       *strndx = e->e_u.e_elf.e_strndx;

       return (0);
}

int
elf_getshdrstrndx(Elf *e, size_t *strndx)
{
       return (_libelf_getshdrstrndx(e, strndx));
}

int
elf_getshstrndx(Elf *e, size_t *strndx) /* Deprecated API. */
{
       return (_libelf_getshdrstrndx(e, strndx) >= 0);
}

int
elf_setshstrndx(Elf *e, size_t strndx)
{
       void *eh;
       int ec;

       if (e == NULL || e->e_kind != ELF_K_ELF ||
           ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64) ||
           ((eh = _libelf_ehdr(e, ec, 0)) == NULL)) {
               LIBELF_SET_ERROR(ARGUMENT, 0);
               return (0);
       }

       return (_libelf_setshstrndx(e, eh, ec, strndx));
}