diff -r 5daa5fbad3ce -r bd3b98a11a14 jdk/src/java.base/share/classes/jdk/internal/jrtfs/SystemImages.java --- a/jdk/src/java.base/share/classes/jdk/internal/jrtfs/SystemImages.java Fri Apr 15 16:19:14 2016 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,106 +0,0 @@ -/* - * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This code is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 only, as - * published by the Free Software Foundation. Oracle designates this - * particular file as subject to the "Classpath" exception as provided - * by Oracle in the LICENSE file that accompanied this code. - * - * This code 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 General Public License - * version 2 for more details (a copy is included in the LICENSE file that - * accompanied this code). - * - * You should have received a copy of the GNU General Public License version - * 2 along with this work; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - */ -package jdk.internal.jrtfs; - -import java.net.URISyntaxException; -import java.net.URL; -import java.nio.file.Files; -import java.nio.file.FileSystem; -import java.nio.file.FileSystems; -import java.nio.file.Path; -import java.nio.file.Paths; -import java.security.AccessController; -import java.security.CodeSource; -import java.security.PrivilegedAction; - -/** - * @implNote This class needs to maintain JDK 8 source compatibility. - * - * It is used internally in the JDK to implement jimage/jrtfs access, - * but also compiled and delivered as part of the jrtfs.jar to support access - * to the jimage file provided by the shipped JDK by tools running on JDK 8. - */ -final class SystemImages { - private SystemImages() {} - - - static final String RUNTIME_HOME; - // "modules" jimage file Path - private static final Path moduleImageFile; - // "modules" jimage exists or not? - private static final boolean modulesImageExists; - // /modules directory Path - private static final Path explodedModulesDir; - - static { - PrivilegedAction pa = SystemImages::findHome; - RUNTIME_HOME = AccessController.doPrivileged(pa); - - FileSystem fs = FileSystems.getDefault(); - moduleImageFile = fs.getPath(RUNTIME_HOME, "lib", "modules"); - explodedModulesDir = fs.getPath(RUNTIME_HOME, "modules"); - - modulesImageExists = AccessController.doPrivileged( - new PrivilegedAction() { - @Override - public Boolean run() { - return Files.isRegularFile(moduleImageFile); - } - }); - } - - static boolean hasModulesImage() { - return modulesImageExists; - } - - static Path moduleImageFile() { - return moduleImageFile; - } - - static Path explodedModulesDir() { - return explodedModulesDir; - } - - /** - * Returns the appropriate JDK home for this usage of the FileSystemProvider. - * When the CodeSource is null (null loader) then jrt:/ is the current runtime, - * otherwise the JDK home is located relative to jrt-fs.jar. - */ - private static String findHome() { - CodeSource cs = SystemImages.class.getProtectionDomain().getCodeSource(); - if (cs == null) - return System.getProperty("java.home"); - - // assume loaded from $TARGETJDK/jrt-fs.jar - URL url = cs.getLocation(); - if (!url.getProtocol().equalsIgnoreCase("file")) - throw new RuntimeException(url + " loaded in unexpected way"); - try { - return Paths.get(url.toURI()).getParent().toString(); - } catch (URISyntaxException e) { - throw new InternalError(e); - } - } -}