/*

  File: acl_copy_int.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 "libacl.h"

/* 23.4.6 */

acl_t

acl_copy_int(const void *buf_p)

{

	const struct __acl *ext_acl = (struct __acl *)buf_p;

	const struct __acl_entry *ent_p, *end_p;

	size_t size;

	int entries;

	acl_obj *acl_obj_p;

	acl_entry_obj *entry_obj_p;

	if (!ext_acl || ext_acl->x_size < sizeof(struct __acl)) {

		errno = EINVAL;

		return NULL;

	}

	ent_p = ext_acl->x_entries;

	size = ext_acl->x_size - sizeof(struct __acl);

	if (size % sizeof(struct __acl_entry)) {

		errno = EINVAL;

		return NULL;

	}

	entries = size / sizeof(struct __acl_entry);

	acl_obj_p = __acl_init_obj(entries);

	if (acl_obj_p == NULL)

		goto fail;

	end_p = ext_acl->x_entries + entries;

	for(; ent_p != end_p; ent_p++) {

		entry_obj_p = __acl_create_entry_obj(acl_obj_p);

		if (!entry_obj_p)

			goto fail;

		/* XXX Convert to machine endianness */

		entry_obj_p->eentry = *ent_p;

	}

	if (__acl_reorder_obj_p(acl_obj_p))

		goto fail;

	return int2ext(acl_obj_p);

fail:

	__acl_free_acl_obj(acl_obj_p);

	return NULL;

}