1 /* 2 * Copyright (c) 2020, 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 import jdk.internal.loader.BootLoader; 29 30 import java.io.*; 31 32 import java.security.AccessController; 33 import java.security.PrivilegedAction; 34 35 /** 36 * A convenience class for loading a native library as a privileged action. 37 */ 38 public class LoadLibraryAction implements PrivilegedAction<Void> { 39 private final String name; 40 LoadLibraryAction(String name) { 41 this.name = name; 42 } 43 44 @Override 45 public Void run() { 46 BootLoader.getNativeLibraries().loadLibrary(name); 47 return null; 48 } 49 50 /** 51 * Convenience method to load a native library without going through doPrivileged 52 * if no security manager is present. This is unsafe for inclusion in a 53 * public API but allowable here since this class is now encapsulated. 54 * 55 * Note: This should only be used by modules defined to the boot loader. 56 * 57 * @param name the library name 58 */ 59 public static void privilegedLoadLibrary(String name) { 60 assert name.indexOf(File.separatorChar) < 0; 61 if (System.getSecurityManager() == null) { 62 BootLoader.getNativeLibraries().loadLibrary(name); 63 } else { 64 AccessController.doPrivileged(new LoadLibraryAction(name)); 65 } 66 } 67 }