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/*
* Copyright (c) 2000-2002 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"
static xfs_mac_label_t *mac_low_high_lp;
static xfs_mac_label_t *mac_high_low_lp;
static xfs_mac_label_t *mac_admin_high_lp;
static xfs_mac_label_t *mac_equal_equal_lp;
/*
* Test for the existence of a MAC label as efficiently as possible.
*/
int
xfs_mac_vhaslabel(
xfs_vnode_t *vp)
{
int error;
int len = sizeof(xfs_mac_label_t);
int flags = ATTR_KERNOVAL|ATTR_ROOT;
XVOP_ATTR_GET(vp, SGI_MAC_FILE, NULL, &len, flags, sys_cred, error);
return (error == 0);
}
int
xfs_mac_iaccess(xfs_inode_t *ip, mode_t mode, struct cred *cr)
{
xfs_mac_label_t mac;
xfs_mac_label_t *mp = mac_high_low_lp;
if (cr == NULL || sys_cred == NULL ) {
return EACCES;
}
if (xfs_attr_fetch(ip, SGI_MAC_FILE, (char *)&mac, sizeof(mac)) == 0) {
if ((mp = mac_add_label(&mac)) == NULL) {
return mac_access(mac_high_low_lp, cr, mode);
}
}
return mac_access(mp, cr, mode);
}