/*

next.c - implementation of the elf_next(3) function.

Copyright (C) 1995 - 1998 Michael Riepe

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Library General Public

License as published by the Free Software Foundation; either

version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

Library General Public License for more details.

You should have received a copy of the GNU Library General Public

License along with this library; if not, write to the Free Software

Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

#include <private.h>

#ifndef lint

static const char rcsid[] = "@(#) $Id: next.c,v 1.6 2005/05/21 15:39:25 michael Exp $";

#endif /* lint */

Elf_Cmd

elf_next(Elf *elf) {

    if (!elf) {

	return ELF_C_NULL;

    }

    elf_assert(elf->e_magic == ELF_MAGIC);

    if (!elf->e_parent) {

	return ELF_C_NULL;

    }

    elf_assert(elf->e_parent->e_magic == ELF_MAGIC);

    elf_assert(elf->e_parent->e_kind == ELF_K_AR);

    elf->e_parent->e_off = elf->e_next;

    if (elf->e_next == elf->e_parent->e_size) {

	return ELF_C_NULL;

    }

    return ELF_C_READ;

}