/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library 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 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 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.util;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
/**
* @author Ewout Prangsma (epr@users.sourceforge.net)
*/
public class AccessControllerUtils {
/**
* Calls AccessController.doPrivileged and unwraps any exception wrapped
* in the PrivilegedActionException.
*
* @param action a typed action
* @return an instance of the action's type.
* @throws Exception
*/
public static <T> T doPrivileged(PrivilegedExceptionAction<T> action) throws Exception {
try {
return AccessController.doPrivileged(action);
} catch (PrivilegedActionException ex) {
throw ex.getException();
}
}
}