--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/solaris/classes/sun/nio/fs/LinuxDosFileAttributeView.java Sun Feb 15 12:25:54 2009 +0000
@@ -0,0 +1,297 @@
+/*
+ * Copyright 2008-2009 Sun Microsystems, Inc. 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. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package sun.nio.fs;
+
+import java.nio.file.attribute.*;
+import java.util.*;
+import java.util.concurrent.TimeUnit;
+import java.io.IOException;
+import sun.misc.Unsafe;
+
+import static sun.nio.fs.UnixNativeDispatcher.*;
+import static sun.nio.fs.UnixConstants.*;
+
+/**
+ * Linux implementation of DosFileAttributeView for use on file systems such
+ * as ext3 that have extended attributes enabled and SAMBA configured to store
+ * DOS attributes.
+ */
+
+class LinuxDosFileAttributeView
+ extends UnixFileAttributeViews.Basic implements DosFileAttributeView
+{
+ private static final Unsafe unsafe = Unsafe.getUnsafe();
+
+ private static final String READONLY_NAME = "readonly";
+ private static final String ARCHIVE_NAME = "archive";
+ private static final String SYSTEM_NAME = "system";
+ private static final String HIDDEN_NAME = "hidden";
+
+ private static final String DOS_XATTR_NAME = "user.DOSATTRIB";
+ private static final byte[] DOS_XATTR_NAME_AS_BYTES = DOS_XATTR_NAME.getBytes();
+
+ private static final int DOS_XATTR_READONLY = 0x01;
+ private static final int DOS_XATTR_HIDDEN = 0x02;
+ private static final int DOS_XATTR_SYSTEM = 0x04;
+ private static final int DOS_XATTR_ARCHIVE = 0x20;
+
+ LinuxDosFileAttributeView(UnixPath file, boolean followLinks) {
+ super(file, followLinks);
+ }
+
+ @Override
+ public String name() {
+ return "dos";
+ }
+
+ @Override
+ public Object getAttribute(String attribute) throws IOException {
+ if (attribute.equals(READONLY_NAME))
+ return readAttributes().isReadOnly();
+ if (attribute.equals(ARCHIVE_NAME))
+ return readAttributes().isArchive();
+ if (attribute.equals(SYSTEM_NAME))
+ return readAttributes().isSystem();
+ if (attribute.equals(HIDDEN_NAME))
+ return readAttributes().isHidden();
+ return super.getAttribute(attribute);
+ }
+
+ @Override
+ public void setAttribute(String attribute, Object value)
+ throws IOException
+ {
+ if (attribute.equals(READONLY_NAME)) {
+ setReadOnly((Boolean)value);
+ return;
+ }
+ if (attribute.equals(ARCHIVE_NAME)) {
+ setArchive((Boolean)value);
+ return;
+ }
+ if (attribute.equals(SYSTEM_NAME)) {
+ setSystem((Boolean)value);
+ return;
+ }
+ if (attribute.equals(HIDDEN_NAME)) {
+ setHidden((Boolean)value);
+ return;
+ }
+ super.setAttribute(attribute, value);
+ }
+
+ @Override
+ public Map<String,?> readAttributes(String first, String[] rest)
+ throws IOException
+ {
+ AttributesBuilder builder = AttributesBuilder.create(first, rest);
+ DosFileAttributes attrs = readAttributes();
+ addBasicAttributesToBuilder(attrs, builder);
+ if (builder.match(READONLY_NAME))
+ builder.add(READONLY_NAME, attrs.isReadOnly());
+ if (builder.match(ARCHIVE_NAME))
+ builder.add(ARCHIVE_NAME, attrs.isArchive());
+ if (builder.match(SYSTEM_NAME))
+ builder.add(SYSTEM_NAME, attrs.isSystem());
+ if (builder.match(HIDDEN_NAME))
+ builder.add(HIDDEN_NAME, attrs.isHidden());
+ return builder.unmodifiableMap();
+ }
+
+ @Override
+ public DosFileAttributes readAttributes() throws IOException {
+ file.checkRead();
+
+ int fd = file.openForAttributeAccess(followLinks);
+ try {
+ final UnixFileAttributes attrs = UnixFileAttributes.get(fd);
+ final int dosAttribute = getDosAttribute(fd);
+
+ return new DosFileAttributes() {
+ @Override
+ public long lastModifiedTime() {
+ return attrs.lastModifiedTime();
+ }
+ @Override
+ public long lastAccessTime() {
+ return attrs.lastAccessTime();
+ }
+ @Override
+ public long creationTime() {
+ return attrs.creationTime();
+ }
+ @Override
+ public TimeUnit resolution() {
+ return attrs.resolution();
+ }
+ @Override
+ public boolean isRegularFile() {
+ return attrs.isRegularFile();
+ }
+ @Override
+ public boolean isDirectory() {
+ return attrs.isDirectory();
+ }
+ @Override
+ public boolean isSymbolicLink() {
+ return attrs.isSymbolicLink();
+ }
+ @Override
+ public boolean isOther() {
+ return attrs.isOther();
+ }
+ @Override
+ public long size() {
+ return attrs.size();
+ }
+ @Override
+ public int linkCount() {
+ return attrs.linkCount();
+ }
+ @Override
+ public Object fileKey() {
+ return attrs.fileKey();
+ }
+ @Override
+ public boolean isReadOnly() {
+ return (dosAttribute & DOS_XATTR_READONLY) != 0;
+ }
+ @Override
+ public boolean isHidden() {
+ return (dosAttribute & DOS_XATTR_HIDDEN) != 0;
+ }
+ @Override
+ public boolean isArchive() {
+ return (dosAttribute & DOS_XATTR_ARCHIVE) != 0;
+ }
+ @Override
+ public boolean isSystem() {
+ return (dosAttribute & DOS_XATTR_SYSTEM) != 0;
+ }
+ };
+
+ } catch (UnixException x) {
+ x.rethrowAsIOException(file);
+ return null; // keep compiler happy
+ } finally {
+ close(fd);
+ }
+ }
+
+ @Override
+ public void setReadOnly(boolean value) throws IOException {
+ updateDosAttribute(DOS_XATTR_READONLY, value);
+ }
+
+ @Override
+ public void setHidden(boolean value) throws IOException {
+ updateDosAttribute(DOS_XATTR_HIDDEN, value);
+ }
+
+ @Override
+ public void setArchive(boolean value) throws IOException {
+ updateDosAttribute(DOS_XATTR_ARCHIVE, value);
+ }
+
+ @Override
+ public void setSystem(boolean value) throws IOException {
+ updateDosAttribute(DOS_XATTR_SYSTEM, value);
+ }
+
+ /**
+ * Reads the value of the user.DOSATTRIB extended attribute
+ */
+ private int getDosAttribute(int fd) throws UnixException {
+ final int size = 24;
+
+ NativeBuffer buffer = NativeBuffers.getNativeBuffer(size);
+ try {
+ int len = LinuxNativeDispatcher
+ .fgetxattr(fd, DOS_XATTR_NAME_AS_BYTES, buffer.address(), size);
+
+ if (len > 0) {
+ // ignore null terminator
+ if (unsafe.getByte(buffer.address()+len-1) == 0)
+ len--;
+
+ // convert to String and parse
+ byte[] buf = new byte[len];
+ unsafe.copyMemory(null, buffer.address(), buf,
+ Unsafe.ARRAY_BYTE_BASE_OFFSET, len);
+ String value = new String(buf); // platform encoding
+
+ // should be something like 0x20
+ if (value.length() >= 3 && value.startsWith("0x")) {
+ try {
+ return Integer.parseInt(value.substring(2), 16);
+ } catch (NumberFormatException x) {
+ // ignore
+ }
+ }
+ }
+ throw new UnixException("Value of " + DOS_XATTR_NAME + " attribute is invalid");
+ } catch (UnixException x) {
+ // default value when attribute does not exist
+ if (x.errno() == ENODATA)
+ return 0;
+ throw x;
+ } finally {
+ buffer.release();
+ }
+ }
+
+ /**
+ * Updates the value of the user.DOSATTRIB extended attribute
+ */
+ private void updateDosAttribute(int flag, boolean enable) throws IOException {
+ file.checkWrite();
+
+ int fd = file.openForAttributeAccess(followLinks);
+ try {
+ int oldValue = getDosAttribute(fd);
+ int newValue = oldValue;
+ if (enable) {
+ newValue |= flag;
+ } else {
+ newValue &= ~flag;
+ }
+ if (newValue != oldValue) {
+ byte[] value = ("0x" + Integer.toHexString(newValue)).getBytes();
+ NativeBuffer buffer = NativeBuffers.asNativeBuffer(value);
+ try {
+ LinuxNativeDispatcher.fsetxattr(fd, DOS_XATTR_NAME_AS_BYTES,
+ buffer.address(), value.length+1);
+ } finally {
+ buffer.release();
+ }
+ }
+ } catch (UnixException x) {
+ x.rethrowAsIOException(file);
+ } finally {
+ close(fd);
+ }
+ }
+}