author | alanb |
Fri, 18 Oct 2013 13:51:12 +0100 | |
changeset 21290 | db5e0cad1102 |
parent 9035 | 1255eb81cc2f |
child 23010 | 6dadb192ad81 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.nio.fs; |
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import java.nio.file.attribute.*; |
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import java.util.Map; |
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import java.util.Set; |
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import java.io.IOException; |
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import sun.misc.Unsafe; |
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import static sun.nio.fs.UnixNativeDispatcher.*; |
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import static sun.nio.fs.UnixConstants.*; |
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/** |
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* Linux implementation of DosFileAttributeView for use on file systems such |
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* as ext3 that have extended attributes enabled and SAMBA configured to store |
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* DOS attributes. |
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*/ |
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class LinuxDosFileAttributeView |
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extends UnixFileAttributeViews.Basic implements DosFileAttributeView |
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{ |
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private static final Unsafe unsafe = Unsafe.getUnsafe(); |
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private static final String READONLY_NAME = "readonly"; |
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private static final String ARCHIVE_NAME = "archive"; |
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private static final String SYSTEM_NAME = "system"; |
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private static final String HIDDEN_NAME = "hidden"; |
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private static final String DOS_XATTR_NAME = "user.DOSATTRIB"; |
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private static final byte[] DOS_XATTR_NAME_AS_BYTES = Util.toBytes(DOS_XATTR_NAME); |
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private static final int DOS_XATTR_READONLY = 0x01; |
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private static final int DOS_XATTR_HIDDEN = 0x02; |
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private static final int DOS_XATTR_SYSTEM = 0x04; |
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private static final int DOS_XATTR_ARCHIVE = 0x20; |
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// the names of the DOS attributes (includes basic) |
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private static final Set<String> dosAttributeNames = |
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Util.newSet(basicAttributeNames, READONLY_NAME, ARCHIVE_NAME, SYSTEM_NAME, HIDDEN_NAME); |
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LinuxDosFileAttributeView(UnixPath file, boolean followLinks) { |
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super(file, followLinks); |
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} |
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@Override |
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public String name() { |
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return "dos"; |
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} |
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@Override |
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public void setAttribute(String attribute, Object value) |
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throws IOException |
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{ |
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if (attribute.equals(READONLY_NAME)) { |
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setReadOnly((Boolean)value); |
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return; |
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} |
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if (attribute.equals(ARCHIVE_NAME)) { |
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setArchive((Boolean)value); |
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return; |
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} |
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if (attribute.equals(SYSTEM_NAME)) { |
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setSystem((Boolean)value); |
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return; |
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} |
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if (attribute.equals(HIDDEN_NAME)) { |
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setHidden((Boolean)value); |
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return; |
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} |
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super.setAttribute(attribute, value); |
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} |
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@Override |
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public Map<String,Object> readAttributes(String[] attributes) |
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throws IOException |
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{ |
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AttributesBuilder builder = |
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AttributesBuilder.create(dosAttributeNames, attributes); |
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DosFileAttributes attrs = readAttributes(); |
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addRequestedBasicAttributes(attrs, builder); |
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if (builder.match(READONLY_NAME)) |
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builder.add(READONLY_NAME, attrs.isReadOnly()); |
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if (builder.match(ARCHIVE_NAME)) |
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builder.add(ARCHIVE_NAME, attrs.isArchive()); |
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if (builder.match(SYSTEM_NAME)) |
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builder.add(SYSTEM_NAME, attrs.isSystem()); |
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if (builder.match(HIDDEN_NAME)) |
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builder.add(HIDDEN_NAME, attrs.isHidden()); |
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return builder.unmodifiableMap(); |
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} |
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@Override |
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public DosFileAttributes readAttributes() throws IOException { |
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file.checkRead(); |
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int fd = file.openForAttributeAccess(followLinks); |
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try { |
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final UnixFileAttributes attrs = UnixFileAttributes.get(fd); |
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final int dosAttribute = getDosAttribute(fd); |
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|
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return new DosFileAttributes() { |
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126 |
@Override |
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public FileTime lastModifiedTime() { |
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return attrs.lastModifiedTime(); |
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} |
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130 |
@Override |
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public FileTime lastAccessTime() { |
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return attrs.lastAccessTime(); |
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} |
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134 |
@Override |
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public FileTime creationTime() { |
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return attrs.creationTime(); |
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137 |
} |
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138 |
@Override |
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139 |
public boolean isRegularFile() { |
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return attrs.isRegularFile(); |
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141 |
} |
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142 |
@Override |
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143 |
public boolean isDirectory() { |
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144 |
return attrs.isDirectory(); |
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145 |
} |
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146 |
@Override |
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147 |
public boolean isSymbolicLink() { |
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148 |
return attrs.isSymbolicLink(); |
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149 |
} |
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150 |
@Override |
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151 |
public boolean isOther() { |
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152 |
return attrs.isOther(); |
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153 |
} |
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154 |
@Override |
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155 |
public long size() { |
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|
156 |
return attrs.size(); |
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157 |
} |
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|
158 |
@Override |
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|
159 |
public Object fileKey() { |
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|
160 |
return attrs.fileKey(); |
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|
161 |
} |
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|
162 |
@Override |
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|
163 |
public boolean isReadOnly() { |
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|
164 |
return (dosAttribute & DOS_XATTR_READONLY) != 0; |
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|
165 |
} |
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|
166 |
@Override |
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|
167 |
public boolean isHidden() { |
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|
168 |
return (dosAttribute & DOS_XATTR_HIDDEN) != 0; |
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|
169 |
} |
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|
170 |
@Override |
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|
171 |
public boolean isArchive() { |
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|
172 |
return (dosAttribute & DOS_XATTR_ARCHIVE) != 0; |
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|
173 |
} |
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|
174 |
@Override |
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|
175 |
public boolean isSystem() { |
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|
176 |
return (dosAttribute & DOS_XATTR_SYSTEM) != 0; |
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|
177 |
} |
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|
178 |
}; |
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|
179 |
|
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|
180 |
} catch (UnixException x) { |
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|
181 |
x.rethrowAsIOException(file); |
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|
182 |
return null; // keep compiler happy |
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|
183 |
} finally { |
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|
184 |
close(fd); |
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|
185 |
} |
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|
186 |
} |
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|
187 |
|
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|
188 |
@Override |
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|
189 |
public void setReadOnly(boolean value) throws IOException { |
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|
190 |
updateDosAttribute(DOS_XATTR_READONLY, value); |
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|
191 |
} |
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|
192 |
|
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|
193 |
@Override |
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|
194 |
public void setHidden(boolean value) throws IOException { |
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|
195 |
updateDosAttribute(DOS_XATTR_HIDDEN, value); |
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|
196 |
} |
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|
197 |
|
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|
198 |
@Override |
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|
199 |
public void setArchive(boolean value) throws IOException { |
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|
200 |
updateDosAttribute(DOS_XATTR_ARCHIVE, value); |
3acf8e5e2ca0
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|
201 |
} |
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|
202 |
|
3acf8e5e2ca0
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|
203 |
@Override |
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|
204 |
public void setSystem(boolean value) throws IOException { |
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|
205 |
updateDosAttribute(DOS_XATTR_SYSTEM, value); |
3acf8e5e2ca0
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|
206 |
} |
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|
207 |
|
3acf8e5e2ca0
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|
208 |
/** |
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|
209 |
* Reads the value of the user.DOSATTRIB extended attribute |
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|
210 |
*/ |
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|
211 |
private int getDosAttribute(int fd) throws UnixException { |
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|
212 |
final int size = 24; |
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|
213 |
|
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|
214 |
NativeBuffer buffer = NativeBuffers.getNativeBuffer(size); |
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|
215 |
try { |
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|
216 |
int len = LinuxNativeDispatcher |
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|
217 |
.fgetxattr(fd, DOS_XATTR_NAME_AS_BYTES, buffer.address(), size); |
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|
218 |
|
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|
219 |
if (len > 0) { |
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|
220 |
// ignore null terminator |
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|
221 |
if (unsafe.getByte(buffer.address()+len-1) == 0) |
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|
222 |
len--; |
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|
223 |
|
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|
224 |
// convert to String and parse |
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|
225 |
byte[] buf = new byte[len]; |
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|
226 |
unsafe.copyMemory(null, buffer.address(), buf, |
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|
227 |
Unsafe.ARRAY_BYTE_BASE_OFFSET, len); |
21290
db5e0cad1102
7050570: (fs) FileSysteProvider fails to initializes if run with file.encoding set to Cp037
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9035
diff
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|
228 |
String value = Util.toString(buf); |
2057
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|
229 |
|
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|
230 |
// should be something like 0x20 |
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|
231 |
if (value.length() >= 3 && value.startsWith("0x")) { |
3acf8e5e2ca0
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|
232 |
try { |
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|
233 |
return Integer.parseInt(value.substring(2), 16); |
3acf8e5e2ca0
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|
234 |
} catch (NumberFormatException x) { |
3acf8e5e2ca0
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|
235 |
// ignore |
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parents:
diff
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|
236 |
} |
3acf8e5e2ca0
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diff
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|
237 |
} |
3acf8e5e2ca0
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|
238 |
} |
3acf8e5e2ca0
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|
239 |
throw new UnixException("Value of " + DOS_XATTR_NAME + " attribute is invalid"); |
3acf8e5e2ca0
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|
240 |
} catch (UnixException x) { |
3acf8e5e2ca0
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diff
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|
241 |
// default value when attribute does not exist |
3acf8e5e2ca0
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|
242 |
if (x.errno() == ENODATA) |
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return 0; |
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throw x; |
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} finally { |
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buffer.release(); |
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} |
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} |
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|
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/** |
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* Updates the value of the user.DOSATTRIB extended attribute |
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*/ |
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private void updateDosAttribute(int flag, boolean enable) throws IOException { |
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file.checkWrite(); |
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|
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int fd = file.openForAttributeAccess(followLinks); |
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try { |
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int oldValue = getDosAttribute(fd); |
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int newValue = oldValue; |
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if (enable) { |
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newValue |= flag; |
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} else { |
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newValue &= ~flag; |
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} |
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if (newValue != oldValue) { |
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byte[] value = Util.toBytes("0x" + Integer.toHexString(newValue)); |
2057
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NativeBuffer buffer = NativeBuffers.asNativeBuffer(value); |
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try { |
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LinuxNativeDispatcher.fsetxattr(fd, DOS_XATTR_NAME_AS_BYTES, |
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buffer.address(), value.length+1); |
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} finally { |
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buffer.release(); |
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} |
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} |
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} catch (UnixException x) { |
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x.rethrowAsIOException(file); |
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} finally { |
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close(fd); |
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} |
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} |
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} |