/*

  File: __acl_to_xattr.c

  Copyright (C) 1999, 2000

  Andreas Gruenbacher, <a.gruenbacher@bestbits.at>

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

  modify it under the terms of the GNU Lesser General Public

  License as published by the Free Software Foundation; either

  version 2.1 of the License, or (at your option) any later version.

  This program 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

  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser 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 "config.h"

#include <errno.h>

#include "libacl.h"

#include "byteorder.h"

#include "acl_ea.h"

char *

__acl_to_xattr(const acl_obj *acl_obj_p, size_t *size)

{

	const acl_entry_obj *entry_obj_p;

	acl_ea_header *ext_header_p;

	acl_ea_entry *ext_ent_p;

	*size = sizeof(acl_ea_header) + acl_obj_p->aused * sizeof(acl_ea_entry);

	ext_header_p = (acl_ea_header *)malloc(*size);

	if (!ext_header_p)

		return NULL;

	ext_header_p->a_version = cpu_to_le32(ACL_EA_VERSION);

	ext_ent_p = (acl_ea_entry *)(ext_header_p+1);

	FOREACH_ACL_ENTRY(entry_obj_p, acl_obj_p) {

		ext_ent_p->e_tag   = cpu_to_le16(entry_obj_p->etag);

		ext_ent_p->e_perm  = cpu_to_le16(entry_obj_p->eperm.sperm);

		switch(entry_obj_p->etag) {

			case ACL_USER:

			case ACL_GROUP:

				ext_ent_p->e_id =

					cpu_to_le32(entry_obj_p->eid.qid);

				break;

			default:

				ext_ent_p->e_id = ACL_UNDEFINED_ID;

				break;

		}

		ext_ent_p++;

	}

	return (char *)ext_header_p;

}