| /* |
| * 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.io.IOException; |
| import java.nio.file.FileStore; |
| import java.nio.file.FileSystem; |
| import java.nio.file.attribute.FileAttributeView; |
| import java.nio.file.attribute.BasicFileAttributeView; |
| import java.nio.file.attribute.FileStoreAttributeView; |
| import java.util.Objects; |
| |
| /** |
| * File store implementation for jrt file systems. |
| * |
| * @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 JrtFileStore extends FileStore { |
| |
| protected final FileSystem jrtfs; |
| |
| JrtFileStore(JrtPath jrtPath) { |
| this.jrtfs = jrtPath.getFileSystem(); |
| } |
| |
| @Override |
| public String name() { |
| return jrtfs.toString() + "/"; |
| } |
| |
| @Override |
| public String type() { |
| return "jrtfs"; |
| } |
| |
| @Override |
| public boolean isReadOnly() { |
| return jrtfs.isReadOnly(); |
| } |
| |
| @Override |
| public boolean supportsFileAttributeView(String name) { |
| return name.equals("basic") || name.equals("jrt"); |
| } |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public <V extends FileStoreAttributeView> V getFileStoreAttributeView(Class<V> type) { |
| Objects.requireNonNull(type, "type"); |
| return (V) null; |
| } |
| |
| @Override |
| public long getTotalSpace() throws IOException { |
| throw new UnsupportedOperationException("getTotalSpace"); |
| } |
| |
| @Override |
| public long getUsableSpace() throws IOException { |
| throw new UnsupportedOperationException("getUsableSpace"); |
| } |
| |
| @Override |
| public long getUnallocatedSpace() throws IOException { |
| throw new UnsupportedOperationException("getUnallocatedSpace"); |
| } |
| |
| @Override |
| public Object getAttribute(String attribute) throws IOException { |
| throw new UnsupportedOperationException("does not support " + attribute); |
| } |
| |
| @Override |
| public boolean supportsFileAttributeView(Class<? extends FileAttributeView> type) { |
| return type == BasicFileAttributeView.class || |
| type == JrtFileAttributeView.class; |
| } |
| } |