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| 1 | /* | ||
| 2 | * Copyright (c) 1998, 2006, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.security.action; | ||
| 27 | |||
| 28 | /** | ||
| 29 | * A convenience class for loading a system library as a privileged action. | ||
| 30 | * | ||
| 31 | * <p>An instance of this class can be used as the argument of | ||
| 32 | * <code>AccessController.doPrivileged</code>. | ||
| 33 | * | ||
| 34 | * <p>The following code attempts to load the system library named | ||
| 35 | * <code>"lib"</code> as a privileged action: <p> | ||
| 36 | * | ||
| 37 | * <pre> | ||
| 38 | * java.security.AccessController.doPrivileged(new LoadLibraryAction("lib")); | ||
| 39 | * </pre> | ||
| 40 | * | ||
| 41 | * @author Roland Schemers | ||
| 42 | * @see java.security.PrivilegedAction | ||
| 43 | * @see java.security.AccessController | ||
| 44 | * @since 1.2 | ||
| 45 | */ | ||
| 46 | |||
| 47 | public class LoadLibraryAction implements java.security.PrivilegedAction<Void> { | ||
| 48 | private String theLib; | ||
| 49 | |||
| 50 | /** | ||
| 51 | * Constructor that takes the name of the system library that needs to be | ||
| 52 | * loaded. | ||
| 53 | * | ||
| 54 | * <p>The manner in which a library name is mapped to the | ||
| 55 | * actual system library is system dependent. | ||
| 56 | * | ||
| 57 | * @param theLib the name of the library. | ||
| 58 | */ | ||
| 59 | public LoadLibraryAction(String theLib) { | ||
| 60 | this.theLib = theLib; | ||
| 61 | } | ||
| 62 | |||
| 63 | /** | ||
| 64 | * Loads the system library whose name was specified in the constructor. | ||
| 65 | */ | ||
| 66 | public Void run() { | ||
| 67 | System.loadLibrary(theLib); | ||
| 68 | return null; | ||
| 69 | } | ||
| 70 | } | ||