/*

newdata.c - implementation of the elf_newdata(3) function.

Copyright (C) 1995 - 2000 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: newdata.c,v 1.9 2005/05/21 15:39:24 michael Exp $";

#endif /* lint */

Elf_Data*

elf_newdata(Elf_Scn *scn) {

    Scn_Data *sd;

    if (!scn) {

	return NULL;

    }

    elf_assert(scn->s_magic == SCN_MAGIC);

    if (scn->s_index == SHN_UNDEF) {

	seterr(ERROR_NULLSCN);

    }

    else if (!(sd = (Scn_Data*)malloc(sizeof(*sd)))) {

	seterr(ERROR_MEM_SCNDATA);

    }

    else {

	*sd = _elf_data_init;

	sd->sd_scn = scn;

	sd->sd_data_flags = ELF_F_DIRTY;

	sd->sd_freeme = 1;

	sd->sd_data.d_version = _elf_version;

	if (scn->s_data_n) {

	    scn->s_data_n->sd_link = sd;

	}

	else {

	    scn->s_data_1 = sd;

	}

	scn->s_data_n = sd;

	return &sd->sd_data;

    }

    return NULL;

}