| /* | |
| * Copyright (c) 2008, 2024, 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 sun.nio.fs; | |
| import java.nio.file.attribute.*; | |
| import java.util.*; | |
| import java.io.IOException; | |
| import static sun.nio.fs.WindowsNativeDispatcher.*; | |
| import static sun.nio.fs.WindowsConstants.*; | |
| class WindowsFileAttributeViews { | |
| private static class Basic extends AbstractBasicFileAttributeView { | |
| final WindowsPath file; | |
| final boolean followLinks; | |
| Basic(WindowsPath file, boolean followLinks) { | |
| this.file = file; | |
| this.followLinks = followLinks; | |
| } | |
| @Override | |
| public WindowsFileAttributes readAttributes() throws IOException { | |
| try { | |
| return WindowsFileAttributes.get(file, followLinks); | |
| } catch (WindowsException x) { | |
| x.rethrowAsIOException(file); | |
| return null; // keep compiler happy | |
| } | |
| } | |
| /** | |
| * Adjusts a Windows time for the FAT epoch. | |
| */ | |
| private long adjustForFatEpoch(long time) { | |
| // 1/1/1980 in Windows Time | |
| final long FAT_EPOCH = 119600064000000000L; | |
| if (time != -1L && time < FAT_EPOCH) { | |
| return FAT_EPOCH; | |
| } else { | |
| return time; | |
| } | |
| } | |
| /** | |
| * Parameter values in Windows times. | |
| */ | |
| void setFileTimes(long createTime, | |
| long lastAccessTime, | |
| long lastWriteTime) | |
| throws IOException | |
| { | |
| long handle = -1L; | |
| try { | |
| int flags = FILE_FLAG_BACKUP_SEMANTICS; | |
| if (!followLinks) | |
| flags |= FILE_FLAG_OPEN_REPARSE_POINT; | |
| handle = CreateFile(file.getPathForWin32Calls(), | |
| FILE_WRITE_ATTRIBUTES, | |
| (FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE), | |
| OPEN_EXISTING, | |
| flags); | |
| } catch (WindowsException x) { | |
| x.rethrowAsIOException(file); | |
| } | |
| // update times | |
| try { | |
| SetFileTime(handle, | |
| createTime, | |
| lastAccessTime, | |
| lastWriteTime); | |
| } catch (WindowsException x) { | |
| // If ERROR_INVALID_PARAMETER is returned and the volume is | |
| // FAT then adjust to the FAT epoch and retry. | |
| if (followLinks && x.lastError() == ERROR_INVALID_PARAMETER) { | |
| try { | |
| if (WindowsFileStore.create(file).type().equals("FAT")) { | |
| SetFileTime(handle, | |
| adjustForFatEpoch(createTime), | |
| adjustForFatEpoch(lastAccessTime), | |
| adjustForFatEpoch(lastWriteTime)); | |
| // retry succeeded | |
| x = null; | |
| } | |
| } catch (WindowsException | IOException ignore) { | |
| // ignore exceptions to let original exception be thrown | |
| } | |
| } | |
| if (x != null) | |
| x.rethrowAsIOException(file); | |
| } finally { | |
| CloseHandle(handle); | |
| } | |
| } | |
| @Override | |
| public void setTimes(FileTime lastModifiedTime, | |
| FileTime lastAccessTime, | |
| FileTime createTime) throws IOException | |
| { | |
| // if all null then do nothing | |
| if (lastModifiedTime == null && lastAccessTime == null && | |
| createTime == null) | |
| { | |
| // no effect | |
| return; | |
| } | |
| // update times | |
| long t1 = (createTime == null) ? -1L : | |
| WindowsFileAttributes.toWindowsTime(createTime); | |
| long t2 = (lastAccessTime == null) ? -1L : | |
| WindowsFileAttributes.toWindowsTime(lastAccessTime); | |
| long t3 = (lastModifiedTime == null) ? -1L : | |
| WindowsFileAttributes.toWindowsTime(lastModifiedTime); | |
| setFileTimes(t1, t2, t3); | |
| } | |
| } | |
| static class Dos extends Basic implements DosFileAttributeView { | |
| 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 ATTRIBUTES_NAME = "attributes"; | |
| // the names of the DOS attributes (includes basic) | |
| static final Set<String> dosAttributeNames = | |
| Util.newSet(basicAttributeNames, | |
| READONLY_NAME, ARCHIVE_NAME, SYSTEM_NAME, HIDDEN_NAME, ATTRIBUTES_NAME); | |
| Dos(WindowsPath file, boolean followLinks) { | |
| super(file, followLinks); | |
| } | |
| @Override | |
| public String name() { | |
| return "dos"; | |
| } | |
| @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,Object> readAttributes(String[] attributes) | |
| throws IOException | |
| { | |
| AttributesBuilder builder = | |
| AttributesBuilder.create(dosAttributeNames, attributes); | |
| WindowsFileAttributes attrs = readAttributes(); | |
| addRequestedBasicAttributes(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()); | |
| if (builder.match(ATTRIBUTES_NAME)) | |
| builder.add(ATTRIBUTES_NAME, attrs.attributes()); | |
| return builder.unmodifiableMap(); | |
| } | |
| /** | |
| * Update DOS attributes | |
| */ | |
| private void updateAttributes(int flag, boolean enable) | |
| throws IOException | |
| { | |
| // GetFileAttributes & SetFileAttributes do not follow links so when | |
| // following links we need the final target | |
| String path = WindowsLinkSupport.getFinalPath(file, followLinks); | |
| try { | |
| int oldValue = GetFileAttributes(path); | |
| int newValue = oldValue; | |
| if (enable) { | |
| newValue |= flag; | |
| } else { | |
| newValue &= ~flag; | |
| } | |
| if (newValue != oldValue) { | |
| SetFileAttributes(path, newValue); | |
| } | |
| } catch (WindowsException x) { | |
| // don't reveal target in exception | |
| x.rethrowAsIOException(file); | |
| } | |
| } | |
| @Override | |
| public void setReadOnly(boolean value) throws IOException { | |
| updateAttributes(FILE_ATTRIBUTE_READONLY, value); | |
| } | |
| @Override | |
| public void setHidden(boolean value) throws IOException { | |
| updateAttributes(FILE_ATTRIBUTE_HIDDEN, value); | |
| } | |
| @Override | |
| public void setArchive(boolean value) throws IOException { | |
| updateAttributes(FILE_ATTRIBUTE_ARCHIVE, value); | |
| } | |
| @Override | |
| public void setSystem(boolean value) throws IOException { | |
| updateAttributes(FILE_ATTRIBUTE_SYSTEM, value); | |
| } | |
| // package-private | |
| // Copy given attributes to the file. | |
| void setAttributes(WindowsFileAttributes attrs) | |
| throws IOException | |
| { | |
| // copy DOS attributes to target | |
| int flags = 0; | |
| if (attrs.isReadOnly()) flags |= FILE_ATTRIBUTE_READONLY; | |
| if (attrs.isHidden()) flags |= FILE_ATTRIBUTE_HIDDEN; | |
| if (attrs.isArchive()) flags |= FILE_ATTRIBUTE_ARCHIVE; | |
| if (attrs.isSystem()) flags |= FILE_ATTRIBUTE_SYSTEM; | |
| updateAttributes(flags, true); | |
| // copy file times to target - must be done after updating FAT attributes | |
| // as otherwise the last modified time may be wrong. | |
| setFileTimes( | |
| WindowsFileAttributes.toWindowsTime(attrs.creationTime()), | |
| WindowsFileAttributes.toWindowsTime(attrs.lastModifiedTime()), | |
| WindowsFileAttributes.toWindowsTime(attrs.lastAccessTime())); | |
| } | |
| } | |
| static Basic createBasicView(WindowsPath file, boolean followLinks) { | |
| return new Basic(file, followLinks); | |
| } | |
| static Dos createDosView(WindowsPath file, boolean followLinks) { | |
| return new Dos(file, followLinks); | |
| } | |
| } |