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use xfs.h, remove all traces of SIM, push extern declarations into headers,
dead code removal.

/*
 * Copyright (c) 2000 Silicon Graphics, Inc.  All Rights Reserved.
 * 
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 * 
 * This program is distributed in the hope that it would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * 
 * Further, this software is distributed without any warranty that it is
 * free of the rightful claim of any third person regarding infringement
 * or the like.  Any license provided herein, whether implied or
 * otherwise, applies only to this software file.  Patent licenses, if
 * any, provided herein do not apply to combinations of this program with
 * other software, or any other product whatsoever.
 * 
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
 * 
 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 * Mountain View, CA  94043, or:
 * 
 * http://www.sgi.com 
 * 
 * For further information regarding this notice, see: 
 * 
 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
 */

#include <xfs.h>

int
mac_xfs_iaccess( xfs_inode_t *ip, mode_t mode, struct cred *cr )
{
	struct mac_label mac;
	struct mac_label *mp = mac_high_low_lp;

	if (cr == NULL || sys_cred == NULL ) {
		return EACCES;
	}

	if (xfs_attr_fetch(ip, SGI_MAC_FILE, (char *)&mac,
			   sizeof(struct mac_label)) == 0) {
		if ((mp = mac_add_label(&mac)) == NULL) {
			return EACCES;
		}
	}

	return mac_access(mp, cr, mode);
}